EP4146942A1 - Stelleinrichtung mit zwei parallel geschalteten ventilen für den betrieb eines turbokompressors - Google Patents
Stelleinrichtung mit zwei parallel geschalteten ventilen für den betrieb eines turbokompressorsInfo
- Publication number
- EP4146942A1 EP4146942A1 EP21728008.0A EP21728008A EP4146942A1 EP 4146942 A1 EP4146942 A1 EP 4146942A1 EP 21728008 A EP21728008 A EP 21728008A EP 4146942 A1 EP4146942 A1 EP 4146942A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- actuator
- control
- control actuator
- adjusting device
- regulating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/02—Surge control
- F04D27/0207—Surge control by bleeding, bypassing or recycling fluids
- F04D27/0223—Control schemes therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/02—Surge control
- F04D27/0207—Surge control by bleeding, bypassing or recycling fluids
- F04D27/0215—Arrangements therefor, e.g. bleed or by-pass valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2270/00—Control
- F05D2270/40—Type of control system
- F05D2270/46—Type of control system redundant, i.e. failsafe operation
Definitions
- the invention relates to an actuating device for systems with flowing fluid, in particular for fluid delivery systems.
- the invention also relates to a system with such an actuating device.
- turbo compressors are used to compress any gases, for example air.
- turbo compressors can be used in applications in which large volume flows are to be compressed. These include blast furnace blowers, air separation systems, chemical and petrochemical systems, applications to increase pressure in gas pipelines, vacuum blowers in the paper industry, vapor compression in evaporation processes or compressed air compressors.
- Turbo compressors especially those with an electric drive, must be able to be started up against minimal counter pressure because of the reduced torque of the electric motor when starting up.
- a small safety margin to the surge limit (stability limit of a turbo compressor)
- an adequate anti-surge control is required.
- the pressurized compressor should be relieved as quickly as possible.
- a turbo compressor should not pump even after a load shutdown while coasting. Rapid relief should also meet high security requirements.
- Control actuators are required in operation to meet the above requirements. Due to the large number of functions to be fulfilled, these are oversized.
- actuators In view of the conflicting requirements - large flow rates on the one hand and precise control on the other - such actuators are equipped with a wide range of special accessories. These include, for example, positioners with high capacity, volume boosters, discharge amplifiers, solenoid valves, throttles, asymmetrical delay relays and / or supply air stations. It is true that the specifications of the compressor manufacturers and the system builders can largely be met with control actuators equipped in this way, but at the expense of the control quality.
- Components of such special accessories are connected via lines, with each connection point creating a potential leakage point.
- positioners are installed for pneumatic drives that move the respective actuator by switching small solenoid valves or piezo-driven valves. Leakages cause these actuators to switch frequently, so that the maximum number of switching operations that can be achieved is achieved after just a few months or weeks. As a result, the valves no longer switch reliably. They are either stuck in the OPEN or CLOSED position. Both can have significant effects, up to a total failure; this applies both to the compressor and to a downstream process.
- the object of the present invention was to provide an actuating device specify which enables precise control with large flow rates at the same time and also ensures improved operational reliability.
- the task also consisted of specifying a system with such an actuating device.
- An actuating device according to the invention is designed for systems with flowing fluid, in particular for fluid delivery systems.
- Such an adjusting device has at least one control actuator which can be adjusted in a controlled manner between a plurality of operating positions, and at least one regulating actuator which can be adjusted in a controlled manner.
- the control actuator and the regulating actuator are connected in parallel to influence the same process variable, and the control actuator is set up for adjustment as a function of an operating position of the regulating actuator.
- actuators By providing two actuators connected in parallel, these can each be designed and dimensioned with regard to different tasks. By dividing the desired functions into two separate actuators in this way, the degree of complexity of the individual components and thus also the risk of operational disruptions can be reduced.
- control actuator While relatively large flow rates can be achieved with the control actuator, the control actuator enables sensitive regulation.
- the division into separate actuators allows the control actuator to be designed primarily with regard to the control accuracy.
- control actuator Due to the parallel connection of the control actuator and the regulating actuator, overall precise regulation can take place for any large flow rates.
- the adjustment of the control actuator as a function of an operating position of the control actuator enables a suitable control range of the control actuator to be maintained at all times during operation.
- the overall control range is significantly expanded without increasing the complexity of the individual components or the entire arrangement.
- control or a control As far as a control or a control is mentioned in the sense of the present invention, this is intended to mean an open control or an open control. Insofar as a regulation or a regulation is mentioned in the sense of the present invention, a closed regulation or a closed regulation should be meant.
- control actuator can be adjustable between more than two operating positions, in particular between two end positions and any number of intermediate positions.
- control actuator can be used for adjustment as a function of the control actuator when passing through a limit manipulated variable assumed operating position, in particular an operating position of the control actuator assumed when a lower limit control value is undershot and / or an operating position of the control actuator when an upper limit control value is exceeded.
- control actuator allows the control actuator to be kept largely within a desired control range.
- control actuator can be set up for a controlled adjustment that generates a regulated adjustment of the control actuator back into a setpoint setting range, in particular from a range below a lower limit control value and / or from a range above an upper limit control value in a target setting range. This ensures that a high control quality is maintained over the entire setting range.
- a controller can be provided which is set up to adjust the control actuator as a function of an operating position of the regulating actuator.
- a regulation can also be provided which is set up to adjust the regulating actuator as a function of a process variable influenced by the control actuator and the regulating actuator.
- the control actuator or the regulating actuator can be operated in a suitable manner and sensitive regulation can be implemented over the entire setting range.
- a controller of the control actuator can be set up to continue an adjustment of the control actuator until the control actuator has reached and / or passed a predefined operating position within the target setting range.
- Such predefined operating positions can be freely set (eg 50% or 45% and 55%) or can be changed subsequently. In this way, stable operation of the regulating actuator and the control actuator can be ensured, in particular without the risk of undesired build-up.
- a lower limit control value can be set when the control actuator is in an operating position of 10% and / or an upper limit control value can be set when the control actuator is in an operating position of 90%.
- the respective limit control values can be freely adjustable or subsequently changed, depending on the application. Such limit control values can be used to determine an optimal operating range or setpoint control range of the control actuator in a suitable manner.
- a predefined setpoint adjustment range of the regulating actuator can extend, for example, between an operating position of the regulating actuator that is open to 10% and 90%.
- the respective target setting range can be freely adjustable or subsequently changed, depending on the application. With such a dimensioned target setting range, an optimal operation with a safe distance from the respective end positions of the control actuator can be guaranteed.
- control actuator can be set up for fully automatic, partially automatic and / or purely manual adjustment as a function of an operating position of the regulating actuator.
- a fully automatic adjustment can reduce the operating effort during operation to a low level.
- a semi-automatic adjustment can take place, for example, in that when the control actuator passes through a limit setting value, a signal is generated to an operator, in particular an optical or acoustic warning signal, whereupon a manually initiated adjustment of the control actuator can be initiated.
- a purely manual adjustment of the control actuator can also take place, for example, in that an operator continuously monitors the passage through a limit control value by the control actuator. If necessary, an adjustment of the control actuator can again be initiated manually.
- control actuator has an electric actuator and / or is driven by an electric actuator.
- Electric actuators allow precise adjustment and thus also contribute to precise regulation of the position of the control actuator.
- control actuator can have an electric actuator and / or be driven by an electric actuator. Also with regard to the control actuator, one is permitted electric actuator enables precise adjustment and thus also enables precise control of the position of the control actuator.
- control actuator can have a greater flow capacity than the regulating actuator.
- the flow capacity should be understood here as the possible flow rate per unit of time that can be guaranteed by the respective actuator.
- control actuator can be designed as a controlled valve and / or the control actuator can be adjustable between a plurality of operating positions for throttling and / or blocking a flowing fluid.
- the regulating actuator can be designed as a regulated valve.
- the regulating actuator can also be adjustable to throttle and / or shut off a flowing fluid.
- valves are suitable for a large number of applications and can be used in a suitable manner in fluid delivery systems and can be combined with one another.
- control actuator can be set up for quick relief or for quick shut-off, in particular for quick relief in a safety position OPEN or for quick shut-off in one Safety position CLOSED.
- control actuator can be set up for quick relief or for quick shut-off, in particular for quick relief in a safety position OPEN or for quick shut-off in a safety position CLOSED.
- a dangerous situation can be counteracted in just a short time.
- Critical system components can thus be protected from damage. In many applications, this can be of particular importance in order to ensure operational reliability.
- control actuator and the regulating actuator are designed for use with turbo compressors.
- Turbo compressors are used in a variety of applications to compress gases.
- control actuator is designed and / or set up for the start-up relief and / or for the event-controlled rapid relief during operation of a turbo compressor. In many cases, it is only the start-up relief that enables an electric motor-driven turbo compressor to start up. Event-controlled rapid relief can be used in the event of malfunctions to prevent damage to the compressor or to the downstream process.
- a tightly closing regulating actuator can be designed and / or set up for anti-pumping, in particular by means of anti-pumping control.
- a control actuator can be used in a turbo compressor stable operation can be maintained along the surge line.
- control actuator can be designed and / or set up for anti-surge protection, in particular by means of anti-surge control.
- a turbo compressor pumps if an anti-surge control does not intervene or intervenes too late. Continuous pumping can very quickly lead to massive damage to the compressor and fatal effects on the downstream process. This can be prevented with a pump protection control, which is only activated by a pumping process and subsequently activates rapid relief by the control actuator and / or the regulating actuator or switching off the motor.
- the regulating actuator can have a linear, equal-percentage or individualized opening characteristic.
- control actuator can have a non-linear characteristic curve, in particular one
- Rapid opening characteristic in which the change in the flow rate per travel unit increases disproportionately when the closed position is left. In this way, particularly rapid pressure relief can be achieved by the control actuator.
- control actuator and / or the regulating actuator can be set up to check the freedom of adjustment, in particular for test adjustment movements at predefined time intervals. Certain applications only require the adjustment of actuators in larger time intervals. If the actuation is not carried out for a longer period of time, the respective Actuator come. Such jamming can be avoided or at least recognized at an early stage by means of test positioning movements at predefined time intervals, so that suitable measures can be taken.
- control actuator and the regulating actuator can form a structural unit and / or be designed as a double actuator.
- a configuration enables particularly simple assembly in a fluid delivery system.
- a coordination of the individual actuators can be preset in an advantageous manner when designed as a double actuator.
- control actuator has a housing with connections for the installation of the control actuator.
- This compact unit is particularly suitable for replacing an already installed actuator without additional welding work on the pipeline.
- control actuator can be set up to reduce dead times from the CLOSED position with a position controller and / or its activation by the controller to act with full adjusting capacity in the event of a corresponding control deviation of the control until the valve effectively begins to open.
- the regulating actuator can furthermore be set up to switch from the adjustment controlled with full capacity to a regulated adjustment with standard capacity from the start of opening. In this way, the achievement of an effective start of opening can be accelerated.
- control actuator can have a pneumatic actuator and the actuator can be used for opening at full adjusting capacity with suspension of control parameters and / or with suspension of pulsating Control and / or operated with permanent control until an effectively open operating position is reached. In this way, dead times of the regulating actuator can be avoided in a particularly advantageous manner or reduced to a small extent.
- control actuator can have an electric or hydraulic actuator and the actuator can be operated for opening at full actuating capacity, in particular from an overlapping, sealed valve position, at maximum actuating speed until an effectively open operating position is reached. In this way, dead times of the regulating actuator can be avoided in a particularly advantageous manner or reduced to a small extent.
- control actuator can be designed as a flap actuator which has a limit area adjoining a CLOSED position. It is possible that such a limit area is not designed by the manufacturer for continuous operation. In particular, the flow velocity around such a limit area can be high, for example assume the speed of sound, which causes dynamic forces on the valve plate in alternating directions. There is increased noise generation combined with increased wear and tear and poor control quality. Wear on the valve disk leads to leaks and thus to permanently inefficient operation.
- control parameters in such a limit area can therefore be prevented by control parameters in such a limit area.
- the control parameters can be selected or set with a view to merely passing through such a limit area during operation and thereby avoiding continuous operation in the limit area.
- control range of can be used as a control valve in an advantageous manner or control flap designed control actuator be dimensioned at least as large as the limit area of the flap actuator.
- control range of a control actuator can advantageously be designed in such a way that at least one limit area of the flap actuator specified by the manufacturer is covered. Individual process requirements can result in a larger control range.
- control actuator and / or the regulating actuator can be set up to use the pressure of the fluid as the exclusive, main or supporting actuating force for moving to a safety position for quick relief and / or quick shut-off.
- the relief process or the shut-off process can be accelerated in a particularly advantageous manner.
- a quick relief or quick shut-off can be achieved with great reliability due to the energy from the pressure of the fluid, which is already available in critical operating situations. Since little or no adjustment energy has to be stored in such a configuration, a surprising and significant simplification of the fail-safe functionality can be implemented.
- control actuator and / or the regulating actuator can be set up as a fail-safe device, in the event of a failure of a supply of drive energy, in particular if an electrical energy supply fails, the control actuator and / or the regulating actuator, the pressure of the fluid as the exclusive, main or to use supporting actuating force to approach a safety position.
- Separate safety elements such as adjusting springs, can be used in this way can be completely omitted or at least dimensioned smaller, whereby the manufacturing costs can be reduced.
- control actuator and / or the regulating actuator can be set up as a fail-safe device, in the event of a failure of a pneumatic or hydraulic power supply of the control actuator and / or the regulating actuator by an actuating medium independent of the fluid, in particular if an instrument air fails or if a Control oil to use a spring force as the exclusive, main or supporting actuating force for approaching a safety position.
- control actuator and / or the regulating actuator can be set up to move to a safety position for rapid relief with reduced or minimized electrical energy or without electrical energy.
- the operational safety can be further improved.
- no or only reduced electrical energy is required to achieve a safety position.
- a safety position can be approached even in the event of malfunctions in the electrical power supply.
- an actuator of the control actuator and / or of the regulating actuator can be decoupled for approaching a safety position, in particular can be decoupled by a switchable coupling with fail-safe function.
- a decoupling can simplify or accelerate the approach to the safety position, since any counteracting forces of the actuator are avoided.
- the switchable clutch with fail-safe function can be closed under electrical voltage and open in the event of a power failure and disconnect by opening. In the event of a fault in the electrical energy supply, uncoupling and thus also approaching a safety position can take place with high reliability.
- an actuator of the control actuator and / or of the regulating actuator can be operated for moving to a safety position at a higher speed, in particular by switching to another
- control actuator and / or the regulating actuator can be set up to move to a safety position driven by an opening piston for quick relief.
- a safety position driven by an opening piston for quick relief.
- the opening piston prefferably be activated by a solenoid valve which opens in the de-energized state, with the opening piston being acted upon by a pressurized fluid in the open state of the solenoid valve.
- the pressurized fluid can be used in a reliable manner to approach a safety position.
- control actuator and / or the regulating actuator can be set up to move to a safety position, driven directly by a pressurized fluid, for rapid relief. This can be done with a relatively small number of components, which ensures a structure that is not susceptible to failure. In particular, such a structure can be used without a separate Components for approaching a safety position can be implemented.
- At least one of the actuators in particular the control actuator and / or the regulating actuator, can be designed as a pressure-compensated actuator. Since no gas forces have to be overcome in a pressure-balanced actuator, the actuating forces required during operation are low.
- At least one of the actuators in particular the control actuator and / or the regulating actuator, to be designed as a non-pressure-compensated actuator.
- a non-pressure-compensated actuator can advantageously be driven directly into a safety position by a pressurized fluid, in particular without separate drive components.
- the pressure of the fluid can also be used in normal operation to adjust the respective actuator.
- Any pneumatic and / or hydraulic drive can be made smaller in this case.
- Another aspect of the present invention relates to a system with a delivery device for a flowing fluid, in particular a turbo compressor, and with an actuator device described above.
- the arrangement according to the invention in such a system is simple and robust in structure and at the same time ensures sensitive control over an arbitrarily large capacity range through the actuating device.
- control actuator and the regulating actuator are preferably installed in lines running in parallel. It can thereby advantageously by the control actuator and the control actuator can be influenced on the same process variable.
- control actuator is installed in a line in which connections for the installation of the control actuator are integrated immediately before and after the control actuator.
- the installation of the control actuator can be simplified in this way, since there is no welding work for pipelines.
- a fitting piece for connecting the control actuator and / or the regulating actuator can be provided in at least one line.
- the connection for a control actuator and / or regulating actuator can be implemented via a fitting piece of this type.
- the regulating actuator can be integrated in a fitting piece which has connections for the installation of an external control actuator.
- An optimization of the system by adding a further actuator can be simplified as a result.
- the control of the delivery device in particular the turbo compressor, is designed and / or set up for a fault shutdown.
- This device has the effect that the quick opening of the actuators involved is activated immediately if the drive fails. Without activation, damage can occur, especially in the intake area of a turbo compressor. Reaching the safety position can be recognized within a predefined time after activation of the quick opening function, otherwise the compressor is switched off.
- the conveying device in particular the turbo compressor, can be designed and / or set up to detect a malfunction in the rapid relief of the control actuator and / or the regulating actuator due to the absence of a feedback (OPEN or CLOSE) within a predefined and / or parameterizable period of time
- a feedback OPEN or CLOSE
- Such a monitoring can initiate a fault shutdown and fatal damage can be avoided.
- Another aspect of the present invention relates to a method for controlling and / or regulating a system with flowing fluid, in particular for a fluid delivery system, in which at least one control actuator is adjusted between a plurality of operating positions and in which at least one control actuator is adjusted in a controlled manner, with the control actuator and the control actuator are connected in parallel to influence the same process variable, and the control actuator is adjusted as a function of an operating position of the control actuator.
- FIG. 2 shows a fluid delivery system with a turbo compressor and an actuating device according to an embodiment of the present invention
- FIG. 3 shows a fluid delivery system with a turbo compressor and an actuating device according to a further embodiment of the present invention
- FIG. 4 shows a fluid delivery system with a turbo compressor and an actuating device according to yet another embodiment of the present invention
- FIG. 5 shows a fluid delivery system with a turbo compressor and an actuating device according to yet another embodiment of the present invention
- FIG. 6 shows a fluid delivery system with a turbo compressor and an actuating device according to yet another embodiment of the present invention
- FIG. 7 shows a logic for the activation of a control actuator as a function of the position of a control actuator according to an embodiment of the present invention.
- FIG. 1 shows schematically a fluid delivery system 100 with a turbo compressor 102 and an actuating device 104 according to the prior art.
- the actuating device 104 comprises, in a conventional manner, a single control flap, which is moved by a pneumatic diaphragm control drive 106 with an associated position controller 108.
- the actuating device 104 embodied as a regulating flap can, for example, be a so-called blow-around valve act, which directs the gas from the pressure line 110 back into the suction line 112.
- a 2/3-way solenoid valve 114 can be provided both for quick opening and also provide fail-safe functionality.
- the actuating device 104 designed as a control flap must meet several requirements at the same time. Both sensitive control and a relatively large flow rate must be implemented. The actuating device is therefore large and at the same time equipped with a large number of accessories. This leads to high susceptibility to failure and high acquisition costs.
- the fluid delivery system 10 has a turbo compressor 12, a suction line 14 upstream of the turbo compressor 12 and a pressure line 16 after the turbo compressor 12.
- the fluid conveying system 10 in FIG. 2 differs from the fluid conveying system 100 from FIG. 1 in the arrangement of the actuating device 18 instead of the actuating device 104 designed as a large control flap.
- the system 100 from FIG. 1 can be converted into a system 10 according to the invention according to FIG. 2.
- the adjusting device 104 which is designed as a large control flap, can be expanded and a fitting piece 20 with internal line routing and with connections for an adjusting device 18 according to the invention can be provided at the same point, as can be seen in FIG. With such a fitting 20 it is possible to integrate an adjusting device 18 according to the invention into an existing line system without welding.
- the actuating device 18 has at least one control actuator 22 which can be adjusted in an open manner between a plurality of operating positions, and at least one control actuator 24, which can be adjusted between a plurality of operating positions in closed-loop control.
- the control actuator 22 and the regulating actuator 24 are connected in parallel to influence the same process variable and / or the same process variables.
- the process variables are, in particular, the pressure in the suction line 14 and the pressure in the pressure line 16.
- control actuator 22 is set up for adjustment as a function of an operating position of the regulating actuator 24.
- the control actuator 22 can be designed as a large and pressure-balanced actuator and / or as a flap actuator and can move to a safety position OPEN.
- control actuator 24 Integrated into the housing of the control actuator 22 are two connections for the lines to and from the control actuator 24.
- a relatively small actuator that is moved by an actuator 26 is shown as the control actuator 24.
- the control actuator 24 can move to a safety position OPEN.
- the actuator 26 can be controlled by an anti-surge controller 28.
- the anti-surge controller 28 can control the actuator 26 as a function of the pump-relevant variables (for example flow and pressure) measured in the suction line 14 and / or in the pressure line 16.
- the control actuator 22 can be moved by a variable-speed actuator 30 via an adjustment logic 32. Furthermore, a gear 31 can be provided between the actuator 30 and the control actuator 22.
- the adjustment logic 32 can receive signals from the actuator 30, from the anti-surge controller 28 and / or from the control actuator 24 or the actuator 26 for the control actuator 24.
- the control actuator 22 is also set up to move to a safety position driven by an opening piston 34 for rapid relief, in particular into an OPEN position.
- the opening piston 34 can advantageously be actuated by the process medium from the pressure line 16.
- a solenoid valve 36 is provided, which is open in the de-energized state. In the event of a power failure, pressure from the pressure line 16 can thus actuate the opening piston 34, by means of which the control actuator is moved in the OPEN direction.
- the opening piston 34, the solenoid valve 36, the actuator 30 with the gear 31 thus form a device 38 for quickly moving the control actuator 22 into a safety position.
- FIG. 3 shows a fluid delivery system 10 according to a further embodiment of the present invention.
- the embodiment in FIG. 3 differs from the embodiment in FIG. 2 only in the arrangement or configuration of the actuating device 18.
- the fitting piece 20 is equipped with an internal line routing and an integrated regulating actuator 24.
- the actuator 24 integrated in the fitting is designed as a small control valve.
- the regulating actuator 24 is moved by the regulating drive 26, which is controlled by the anti-surge controller 28.
- the control actuator 24 can move to a safety position OPEN.
- connections for the externally arranged control actuator 22 are also provided on the fitting piece 20.
- the control actuator 22 is designed as a large, non-pressure-balanced control valve, in particular larger than the regulating actuator 24.
- the control actuator 22 can therefore ensure a greater flow rate than the regulating actuator 24.
- the control actuator 22 can move to a safety position OPEN.
- control actuator 22 can be moved by an actuator 30 via an adjustment logic 32.
- a gear 31 with a switchable gear ratio can be provided between the actuator 30 and the control actuator 22.
- the adjustment logic 32 can in turn receive signals for the adjustment of the control actuator 22 from the anti-surge controller 28 and / or from the control actuator 22 or the actuator 26 for the control actuator 22.
- the gas pressure on the inlet side of the control actuator 22 acts in the opening direction.
- the transmission 31 is switched to a different transmission ratio, which causes the control actuator 22 to move much more quickly. This is possible because the actuator 30 is supported in the opening direction by the gas pressure.
- the actuator 30 and the gear 31 with switchable gear ratio thus form a device 38 for quickly moving the control actuator 22 into a safety position.
- FIG. 4 shows a fluid delivery system 10 according to a further embodiment of the present invention.
- the embodiment in FIG. 4 differs from the embodiment in FIG. 2 only in the arrangement or configuration of the actuating device 18.
- Actuating device 18 in turn has a control actuator 22 and a regulating actuator 24.
- the control actuator 22 and the regulating actuator 24 are designed according to FIG. 4 as a double actuator or double valve
- the control actuator 22 according to FIG. 4 is designed as a large, pressure-balanced control valve and can move to a safety position OPEN.
- Integrated into the housing of the control actuator 22 is the smaller control actuator 24, which can also move to a safety position OPEN.
- the control actuator 24 is moved by the actuator 26 and the actuator 26 is activated by the anti-surge controller 28.
- the control actuator 22 is moved by the actuator 30 via an adjustment logic 32.
- the adjustment logic 32 receives signals from the anti-surge controller 28 and / or from the control actuator 22 or the actuator 26 for the control actuator 22.
- a gear 31 and a switchable clutch 33 can be provided between the actuator 30 and the control actuator 22.
- the actuating drive 30 can be decoupled from the gear 31 via the switchable coupling 33.
- the control actuator is driven by the opening piston 34 into a safety position, in particular into an OPEN position.
- the opening piston 34 is actuated by the pre-pressure control actuator 22 or by the pressure of the process medium from the pressure line 16.
- the solenoid valve 36 is open to ensure fail-safe functionality in the de-energized state, so that in the event of a power failure, the pressure from the pressure line 16 actuates the opening piston 34.
- the opening piston 34, the solenoid valve 36, the actuator 30 with gear 31 and clutch 33 form a device 38 for quickly moving the control actuator 22 into a safety position.
- FIG. 5 shows a fluid delivery system 10 according to a further embodiment of the present invention.
- the embodiment in FIG. 5 differs from the embodiment in FIG. 4 only in that the actuating device 18 is connected to the suction line 14 and the pressure line 16 via a fitting piece 20.
- FIG. 6 shows a fluid delivery system 10 according to a further embodiment of the present invention.
- the embodiment in FIG. 6 again differs from the embodiment in FIG. 2 in the arrangement or configuration of the actuating device 18.
- the actuating device 18 has a control actuator 22 and a regulating actuator 24.
- the control actuator 22 and the regulating actuator 24 are installed as separately designed valves parallel to the pressure line 16.
- the control actuator 22 according to FIG. 6 is designed as a large, non-pressure compensated control valve and can move to a safety position OPEN.
- the small control actuator 24 connected to it can be moved into a safety position OPEN.
- the control actuator 24 is moved by the actuator 26 and the actuator 26 is activated by the anti-surge controller 28.
- the control actuator 22 can be moved by the actuator 30 via an adjustment logic 32 and can receive signals from the anti-surge controller 28 and / or from the control actuator 22 or the actuator 26 for the control actuator 22 to adjust the control actuator 22.
- a gear 31 and a switchable clutch 33 can be provided between the actuator 30 and the control actuator 22.
- the actuating drive 30 can be decoupled from the gear 31 via the switchable coupling 33.
- the gas pressure on the inlet side of the control actuator 22 acts in the opening direction.
- a quick relief can take place through the pressure of the process medium acting directly on the control actuator 22 in the opening direction. This is possible because the control actuator 22 is designed as a non-pressure-compensated control valve.
- the actuator 30 with gear 31 and clutch 33 form a device 38 for quickly moving the control actuator 22 into a safety position.
- FIG. 7 shows a logic 32 for activating a control actuator 22 as a function of the position of a control actuator 24 according to an embodiment of the present invention.
- the position of the control actuator 22 is readjusted as a function of the position of the control actuator 24 if a predefined control signal and / or a predefined position of the control actuator 24 is exceeded or undershot.
- the operating position of the control valve 24 can be through the Control signal 28 'of the anti-surge controller 28 as well as by the analog feedback signal 25' of the position controller 25 can be defined or output.
- the adaptation can be application-related and can be different for the opening and closing process.
- the control actuator 22 is repositioned when the control actuator 24 with a target setting range 27 between 10% and 90% exceeds a limit control value 31 of 90% or falls below a limit control value 29 of 10% .
- the logic 32 according to FIG. 7 initiates a movement of the control actuator 22 in the same effective direction and consequently supports the change in quantity aimed at by the controller 28.
- the control actuator 24 has reached a parameterizable position 33 or 35, which in the exemplary embodiment is 50% in each case, the repositioning of the control actuator 22 is completed. This sequence can be repeated as required, so that even very large quantities can be precisely controlled.
- the logic 32 according to FIG. 7 has the comparators 40, 40 ′, 42 and 44.
- the comparators 40, 40 ', 42 and 44 receive signals 28' from the anti-surge controller 28, which in turn controls the actuator 26 for the control actuator 24. Instead of the control signal, the comparators 40, 40 ', 42 and 44 can also monitor the analog position feedback 25' of the control actuator.
- the comparator 42 detects as soon as the control actuator 24 exceeds a limit control value 31 of 90%.
- the comparator 44 detects as soon as the control actuator 24 exceeds a limit control value 29 of 10%.
- the values for the comparators 40, 40 ', 42 and 44 can be freely parameterized.
- the comparators 40, 40 ', 42 and 44 are followed by the pulse generators 46, 46', 48 and 50.
- the comparator 40 and the downstream pulse generator 46 reset the flip-flop switching element 54.
- the comparator 40 'and the downstream pulse generator 46' reset the flip-flop switching element 52.
- the comparator 42 and the downstream pulse generator 48 set the flip-flop switching element 52.
- the comparator 44 and the downstream pulse generator 50 set the flip-flop switching element 54.
- the flip-flop switching elements 52 and 54 are followed by a freely adjustable ramp 56 , via which the actuator 30 of the control actuator 22 is controlled.
- the pulse generator 48 sets the flip-flop switching element 52 and actuates the actuator 30 in the opening direction via a freely adjustable ramp 56. By activating the actuator 30, the control actuator 22 is adjusted in such a way that the quantity change aimed for by the controller 28 is supported.
- the flip-flop switching element 54 is set by the pulse generator 50 and the actuator 30 is controlled in the closing direction via a freely adjustable ramp 56. By activating the actuator 30, the control actuator 22 is adjusted in such a way that the quantity change aimed for by the controller 28 is supported.
- Control actuator 22 is thereby ended or at least interrupted. This process can be repeated as often as desired as soon as the control actuator 24 passes through a limit control value.
- Switching element 54 is reset and further activation of the actuator 30 is stopped.
- the adjustment of the control actuator 22 is thereby ended or at least interrupted. This process can be repeated as often as required as soon as the control actuator passes through a limit manipulated variable.
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
- Control Of Positive-Displacement Air Blowers (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE202020102557.0U DE202020102557U1 (de) | 2020-05-06 | 2020-05-06 | Stelleinrichtung für Systeme mit strömendem Fluid sowie System mit Stelleinrichtung |
| PCT/EP2021/061983 WO2021224385A1 (de) | 2020-05-06 | 2021-05-06 | Stelleinrichtung mit zwei parallel geschalteten ventilen für den betrieb eines turbokompressors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4146942A1 true EP4146942A1 (de) | 2023-03-15 |
Family
ID=76138046
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP21728008.0A Pending EP4146942A1 (de) | 2020-05-06 | 2021-05-06 | Stelleinrichtung mit zwei parallel geschalteten ventilen für den betrieb eines turbokompressors |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US12454959B2 (de) |
| EP (1) | EP4146942A1 (de) |
| DE (1) | DE202020102557U1 (de) |
| WO (1) | WO2021224385A1 (de) |
Family Cites Families (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1107887B (de) | 1957-04-16 | 1961-05-31 | Power Jets Res & Dev Ltd | Regler zur Pumpverhuetung bei Stroemungsverdichtern |
| GB2172053B (en) | 1985-03-05 | 1988-10-05 | Rolls Royce | Gas turbine engine valve control system |
| SU1643800A1 (ru) | 1988-09-13 | 1991-04-23 | Киевский институт автоматики им.ХХУ съезда КПСС | Способ защиты от помпажа компрессора и устройство дл его осуществлени |
| DE3907289A1 (de) | 1989-03-07 | 1990-09-13 | Siemens Ag | Stellantrieb fuer sicherheitsventile |
| IT1255836B (it) * | 1991-10-01 | 1995-11-17 | Procedimento per la sorveglianza del limite di pompaggio di turbocompressori a piu' stadi e refrigerazione intermedia | |
| DE19541192C2 (de) | 1995-11-04 | 1999-02-04 | Ghh Borsig Turbomaschinen Gmbh | Verfahren zum Schutz eines Turbokompressors vor Betrieb im instabilen Arbeitsbereich mittels einer Abblaseeinrichtung |
| US6332336B1 (en) | 1999-02-26 | 2001-12-25 | Compressor Controls Corporation | Method and apparatus for maximizing the productivity of a natural gas liquids production plant |
| DE602004014541D1 (de) | 2004-06-07 | 2008-07-31 | Honeywell Int Inc | Verdichter mit entstellbarer rückführung und verfahren |
| US7712306B2 (en) | 2006-12-22 | 2010-05-11 | Covanta Energy Corporation | Dynamic control of selective non-catalytic reduction system for semi-batch-fed stoker-based municipal solid waste combustion |
| EP2042743B1 (de) | 2007-09-27 | 2014-11-05 | ABB Research Ltd. | Gaskompressionssystem und Verfahren zur Steuerung eines Gaskompressionssystems. |
| CN201102967Y (zh) | 2007-11-28 | 2008-08-20 | 哈尔滨铜顺汽轮机设备有限公司 | 双座防喘阀 |
| RU2476687C2 (ru) | 2008-03-28 | 2013-02-27 | Мицубиси Хеви Индастрис, Лтд. | Способ управления турбинной установкой и турбинная установка |
| US20110194928A1 (en) | 2008-10-13 | 2011-08-11 | Kturbo Inc. | Blow-off system for multi-stage turbo compressor |
| EP2356389B1 (de) | 2008-12-09 | 2020-04-15 | Shell International Research Maatschappij B.V. | Verfahren zum betrieb eines verdichters und vorrichtung dafür |
| IT1396001B1 (it) * | 2009-04-28 | 2012-11-09 | Nuovo Pignone Spa | Sistema di recupero dell'energia in un impianto per la compressione di gas |
| EP2530329A1 (de) | 2011-05-30 | 2012-12-05 | Siemens Aktiengesellschaft | System zum Sammeln von Gas aus einem Gasfeld mit einem Hochdruckkompressor |
| CN105829730B (zh) | 2013-05-29 | 2018-09-21 | 西门子公司 | 用于运行压缩机的方法和具有压缩机的装置 |
| US9279374B2 (en) | 2013-08-13 | 2016-03-08 | Ford Global Technologies, Llc | Methods and systems for surge control |
| EP3090159B1 (de) * | 2013-12-11 | 2019-05-22 | Dayco IP Holdings, LLC | Rückführungssystem für turboladerverdichter |
| CN204719557U (zh) | 2015-06-04 | 2015-10-21 | 北京自动化技术研究院 | 一种温控设备的冷却控制系统 |
| ITUB20152030A1 (it) | 2015-07-09 | 2017-01-09 | Nuovo Pignone Tecnologie Srl | Sistema di compressore con una disposizione di raffreddamento tra la valvola di anti-pompaggio ed il lato di aspirazione del compressore, e relativo metodo |
| RU2745235C1 (ru) * | 2017-04-21 | 2021-03-22 | Компрессор Контролз Корпорейшен | Система и способ для обнаружения износа регулирующего клапана |
| IT201900005554A1 (it) | 2019-04-10 | 2020-10-10 | Nuovo Pignone Tecnologie Srl | Sistema di compressione e metodo per il controllo di un sistema di compressione |
-
2020
- 2020-05-06 DE DE202020102557.0U patent/DE202020102557U1/de active Active
-
2021
- 2021-05-06 EP EP21728008.0A patent/EP4146942A1/de active Pending
- 2021-05-06 US US17/998,134 patent/US12454959B2/en active Active
- 2021-05-06 WO PCT/EP2021/061983 patent/WO2021224385A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021224385A1 (de) | 2021-11-11 |
| US20240271631A1 (en) | 2024-08-15 |
| DE202020102557U1 (de) | 2021-08-09 |
| US12454959B2 (en) | 2025-10-28 |
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