CN115681237A - Hydraulic-pneumatic emergency equipment and hydraulic-pneumatic control method - Google Patents

Abstract

The invention discloses a hydropneumatic emergency device and a hydropneumatic control method. The invention also provides a liquid-gas control method. The hydraulic and pneumatic power emergency equipment and the hydraulic and pneumatic control method disclosed by the invention can provide a hydraulic power source, an air source and a high-pressure water source simultaneously through the arranged engine, the air pressure supply system, the oil pressure supply system and the water pressure supply system, are used for on-site pneumatic actuator operation and field and equipment cleaning, integrate multiple functions into a whole, have multiple functions, can simultaneously meet various different requirements and have wide application range.

Description

A liquid-pneumatic power emergency equipment and liquid-pneumatic control method

technical field

The invention relates to the technical field of power emergency equipment, in particular to a liquid-pneumatic power emergency equipment and a liquid-pneumatic control method.

Background technique

The emergency power unit is a small power unit designed to provide emergency hydraulic power. It includes a simple hydraulic system. The hydraulic system is mainly composed of a hydraulic oil tank, a hydraulic pump, a stop valve, a pressure gauge, and a safety relief valve. The hydraulic pump pumps the hydraulic oil in the hydraulic oil tank to the equipment to be rescued through the stop valve, and observes the system pressure through the pressure gauge. At the same time, a safety relief valve is connected to the P port of the hydraulic pump to prevent the system pressure from being too high.

The existing power emergency equipment provides a hydraulic power source, and the power circuit only relies on the safety relief valve to ensure the safety of the system, which has poor safety and high risk factor. It can only provide power to the rescue equipment with a specific flow rate and specific pressure. The hydraulic power system that requires high micro-motion performance and high position accuracy of the hydraulic drive control mechanism cannot meet the use requirements. At the same time, it cannot meet the simultaneous needs of providing In the case of air source and water source, for specific equipment to be rescued, it is often necessary to design and develop a customized power system, which has a long cycle and high cost.

Contents of the invention

In order to solve the above technical problems, the embodiment of the present invention expects to provide a hydraulic-pneumatic power emergency equipment and a hydraulic-pneumatic control method that integrates the functions of air pressure, oil pressure, and water pressure.

Technical scheme of the present invention is realized like this:

A liquid-pneumatic power emergency equipment, comprising a movable chassis, an engine mounted on the movable chassis, an air pressure supply system, an oil pressure supply system and a water pressure supply system, the air pressure supply system includes an air storage tank, An air pump, an air control valve assembly and a pneumatic actuator, the air pump pressurizes the gas in the air storage tank and delivers it to the pneumatic actuator through the air control valve assembly, the oil pressure supply system includes an oil tank, A dual-flow pump, an oil control valve assembly, and an oil circuit device connector, the dual-flow pump pressurizes the oil in the oil tank and delivers it to the oil circuit device connector through the oil control valve assembly, and the hydraulic supply system includes Water storage tank, water pump, water control valve assembly and water spray gun. The water pump pressurizes the water in the water storage tank and delivers it to the water spray gun through the water control valve assembly. The engine supplies the air pump and the dual flow pump It is connected with the water pump to provide power.

Preferably, the dual-flow pump includes a small-flow pump and a large-flow pump connected in parallel, the small-flow pump is used to pump hydraulic oil with a small flow, and the large-flow pump is used to pump hydraulic oil with a large flow, and the hydraulic oil is respectively The small-flow pump and the large-flow pump are used to deliver oil circuit device joints.

Preferably, both the small flow pump and the large flow pump are load sensitive pumps.

Preferably, the oil control valve assembly includes a connected integrated valve group and a multi-way valve group, the hydraulic oil is delivered to the integrated valve group and the multi-way valve group by the small flow pump and the large flow pump The oil circuit device connector.

Preferably, the air control valve assembly includes a gas first shut-off valve, an oil-water separator, a gas pressure reducing valve, a lubricator and a gas second shut-off valve connected in sequence, and the gas second shut-off valve is connected with the pneumatic actuator machine connection.

Preferably, the pneumatic actuator is a pneumatic grinder or a pneumatic gun.

Preferably, the air pressure supply system further includes an air filter combination triplet, and the air filter combination triplet includes an oil-water separator, a pressure reducing valve and a lubricator sequentially connected by an oil circuit.

Preferably, the water control valve assembly includes a water pressure cut-off valve connected to the oil circuit and an integrated valve, and the integrated valve includes a water pressure check valve connected to the oil circuit, a water pressure throttle valve and a water pressure relief valve, respectively It is used to protect the water pump, throttling and regulating the pressure, and setting the overflow pressure of the system.

A liquid-pneumatic control method, including the above-mentioned liquid-pneumatic power emergency equipment, also includes the following steps:

S1, check whether the equipment status is normal, and the equipment is turned on and running;

S2, judging whether to provide hydraulic power to the system to be rescued, if yes, the dual-flow pump pressurizes the oil in the oil tank and delivers it to the joint of the oil circuit device through the oil control valve assembly; if no, then It is judged whether it is necessary to start the air pressure supply system, if the judged result is yes, the air pump pressurizes the gas in the air storage tank and transports it to the pneumatic actuator through the air control valve assembly, if the judged result is no, then It is judged whether to start the water pressure supply system, if the judged result is yes, the water pump pressurizes the water in the water storage tank and delivers it to the water spray gun through the water control valve assembly, if the judged result is no, return to step S1.

The liquid-pneumatic power emergency equipment and liquid-pneumatic control method provided by the embodiments of the present invention can not only provide a hydraulic power source, but also provide a gas source, The high-pressure water source is used for on-site pneumatic actuator operations, cleaning of the site and equipment. It integrates multiple functions, one machine with multiple functions, and can meet a variety of different needs at the same time, and has a wide range of applications. Wherein, the hydraulic oil is supplied by the dual-flow pump, and the oil can be supplied according to different flow and pressure requirements, and the energy consumption generated during the system execution is lower.

Description of drawings

Fig. 1 is the structural representation of the hydropneumatic power emergency equipment provided by the present invention;

Fig. 2 is a partial structural schematic diagram of the liquid-pneumatic power emergency equipment shown in Fig. 1;

Fig. 3 and Fig. 4 are the structural representations of the hydropneumatic power emergency equipment shown in Fig. 2;

Fig. 5 is a structural schematic diagram of the air pressure supply system of the liquid-pneumatic power emergency equipment;

Fig. 6 is a structural schematic diagram of the water pressure supply system of the liquid-pneumatic power emergency equipment provided by the present invention

Fig. 7 is a structural schematic diagram of the oil pressure supply system of the hydraulic-pneumatic power emergency equipment provided by the present invention;

Fig. 8 is a flowchart of a liquid-gas control method provided by the present invention.

Detailed ways

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described The embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

See Figures 1 through 7. The hydropneumatic power emergency equipment includes a movable chassis 20, an engine 30 mounted on the movable chassis, an air pressure supply system 50, an oil pressure supply system 60 and a water pressure supply system 70, and the air pressure supply system 50 includes Air storage tank 208, air pump 203, air control valve assembly and pneumatic actuator 301, the air pump 203 pressurizes the gas in the air storage tank 208 and transports it to the pneumatic actuator 301 through the air control valve assembly , the oil pressure supply system 60 includes an oil tank 210, a dual-flow pump 200, an oil control valve assembly and an oil circuit device connector 209, and the dual-flow pump pressurizes the oil in the oil tank 210 and delivers it through the oil control valve assembly To the oil circuit device connector 209, the water pressure supply system 70 includes a water storage tank 207, a water pump 206, a water control valve assembly and a water spray gun 402. The valve assembly is delivered to the water spray gun 402, and the motor is connected to the air pump 203, the dual flow pump and the water pump 206 to provide power thereto. The hydraulic-pneumatic power emergency equipment can not only provide a hydraulic power source, but also provide an air source and a high-pressure water source for on-site pneumatic Executing machine operations, site and equipment cleaning, integrating multiple functions, one machine with multiple functions, can meet a variety of different needs at the same time, and has a wide range of applications. Wherein, the hydraulic oil is supplied by the dual-flow pump, and the oil can be supplied according to different flow and pressure requirements, and the energy consumption generated during the system execution is lower.

Specifically, the movable underframe 200 is a car chassis, which can realize rapid transition and facilitate rapid field rescue of hydraulic and pneumatic equipment. The movable underframe 200 includes casters 201 and a base 202, and a draw hook 205 is installed on the front end of the base 202, and the draw hook 205 facilitates the transfer of load-bearing dragging equipment. The engine 30 provides source power to drive each pump to work. The engine is also connected with a fuel tank 401, which provides fuel to the engine.

The dual-flow pump 200 includes a parallel small-flow pump 211 and a large-flow pump 212, the small-flow pump 211 is used to pump hydraulic oil with a small flow, and the large-flow pump 212 is used to pump hydraulic oil with a large flow. The oil is delivered to the oil circuit device joint 209 through the small flow pump 211 and the large flow pump 212 respectively. The large-flow pump 212 is set to meet the supply under the large-flow hydraulic situation, and the small-flow pump 211 meets the supply under the small-flow hydraulic situation. Different needs correspond to different supplies, and it can provide rescue for different flow and different pressure levels. The equipment provides power with low energy consumption.

Wherein, the oil circuit component joint 209 is a plurality of groups of oil circuit component joints, and the oil circuit component joints of different specifications are installed on the panel, which is convenient for installation and high in operation efficiency.

Specifically, in this embodiment, the small-flow pump 211 and the large-flow pump 212 are both load-sensing pumps. The Load Sensing Pump is a new hydraulic compensator that simultaneously senses system pressure and flow requirements and enables the plunger pump to respond correctly to changes in flow pressure requirements.

The oil control valve assembly includes a connected integrated valve group 616 and a multi-way valve group 502, hydraulic oil is delivered to the integrated valve group 616 and the multi-way valve group 502 through the small flow pump 211 and the large flow pump 212 Then it reaches the oil circuit component joint 209.

The air control valve assembly includes a gas first cut-off valve 604 , an air filter assembly triplex 501 and a gas second cut-off valve 608 connected in sequence, and the gas second cut-off valve 608 is connected to the pneumatic actuator 301 .

Specifically, in this embodiment, the pneumatic actuator 301 is a pneumatic grinder or a pneumatic gun. The air gun is used for cleaning equipment, and the grinder is used for rectification and grinding of on-site parts.

Specifically, the air filter combination triple unit 501 includes an oil-water separator 605 , a decompression valve 606 and an oil mist device 607 connected in sequence through an oil circuit. Wherein, the oil-water separator 605 is used to filter air, the pressure reducing valve 606 is used to reduce the high-pressure gas pumped by the air pump 203, and the oil mist device 607 is used to perform oil mist lubrication treatment on the device.

Wherein, the water control valve assembly includes a water pressure cut-off valve 613 connected to the oil circuit and an integrated valve group 616, and the integrated valve group 616 includes a water pressure check valve connected to the oil circuit, a water pressure throttle valve and a water pressure relief valve. Flow valves are respectively used for protecting the water pump 206, throttling and regulating pressure, and setting system overflow pressure.

Please refer to Fig. 8, the present invention also provides a liquid gas control method, including the following steps:

S1, check whether the state of the liquid-pneumatic power emergency equipment is normal, and the equipment is turned on and running;

S2, judging whether to provide hydraulic power to the system to be rescued, if yes, the dual-flow pump pressurizes the oil in the oil tank 210 and delivers it to the oil circuit device joint 209 through the oil control valve assembly; if no , it is judged whether it is necessary to start the air pressure supply system, and the judgment result is yes, the air pump 203 pressurizes the gas in the gas storage tank 208 and transports it to the pneumatic actuator through the air control valve assembly, and the judgment result is If no, judge whether to start the water pressure supply system, if the judgment result is yes, the water pump 206 pressurizes the water in the water storage tank 207 and transport it to the water spray gun 402 through the water control valve assembly, if the judgment result is no, return to step S1 .

In the above step S2, the dual-flow pumps (large-flow pump and small-flow pump double pump) supply oil at the same time, set the unloading valves Y2 and Y3, set the predetermined pressure of the system, and the electric subway Y5 and Y6 are energized. The pumps flow together to supply oil to the system, and provide hydraulic power to the rescue equipment after passing through the hydraulic valves.

The high-flow pump supplies oil, adjust the electromagnets Y2 and Y3, respectively set the predetermined overflow pressure of the large-flow pump system, and at the same time, the small-flow pump is unloaded, the electromagnet Y5 is energized, and Y6 is de-energized. The system supplies oil and provides hydraulic power to the rescue equipment after going through the hydraulic valves.

The small flow pump supplies oil, and the electromagnets Y2 and Y3 are set to respectively set the predetermined pressure for the unloading of the large flow pump and the system overflow of the small flow pump. The electromagnet Y6 is energized, and Y5 is powered off, and only the small flow pump is supplied to the system. Oil supply provides hydraulic power to the rescue equipment after passing through the hydraulic valves.

As shown in Figure 5, when it is necessary to start the air pressure supply system and operate the pneumatic actuator 301, the air is pretreated by the air filter 601, and then pressurized by the air pump 203 to become pressurized gas. After that, the gas passes through the air storage tank 208, The first gas cut-off valve 604 reaches the air filter combination triplex 501, and after being processed by the oil-water separator 605, the pressure reducing valve 606, and the oil mist device 607, the gas second cut-off valve 608 drives the pneumatic actuator 301 to act.

Wherein, the electromagnet Y1 of the electromagnetic reversing valve is used to control the opening or closing of the cut-off valve 608 .

In addition, it should be noted that a pressure safety valve 603 is also provided between the gas storage tank 208 and the first gas cut-off valve 604, and the pressure safety valve 603 is used to set the system gas pressure to prevent the pressure from being too high. Wherein, the muffler 610 is used for noise reduction when the gas overpressure overflows.

As shown in Figure 6, when cleaning the site, the water in the water storage tank 207 is filtered through the filter 612. After the water pump 206 is pressurized, the high-pressure water flow passes through the water pressure shut-off valve 613 and the integrated valve 611 to the water spray gun 402. The water spray gun 402 jets high-pressure water to the washing place for cleaning. The electromagnet Y13 is used to control the opening or closing of the stop valve 613 .

As shown in Fig. 7, when the equipment to be rescued needs an emergency hydraulic power source, the hydraulic power system starts to work. The hydraulic oil in the hydraulic oil tank 210 is pressurized by the small flow pump 211 and the large flow pump 212, passes through the integrated valve group 616 and the multi-way valve group 502 and reaches the oil circuit component joint 614 to provide hydraulic power to the rescue equipment.

Among them, it is worth mentioning that an electric proportional unloading valve 617 is also provided at the oil outlet of the small flow pump 211, and an electric proportional unloading valve 618 is also provided at the oil outlet of the large flow pump 212. The electric proportional unloading valve 617 and electric proportional unloading valve 618 respectively adjust the system pressure when the small flow pump 211 and the large flow pump 212 respectively supply oil. The unloading valve determines that the electromagnets Y2 and Y3 of the electromagnetic reversing valve are used to adjust the unloading pressure of the electric proportional unloading valve 618 and the electric proportional unloading valve 617 respectively.

Specifically, the overflow valve 619 is used as a system safety valve to prevent the system pressure from being too high.

Specifically, the integrated valve group 616 integrates three logic valves and three switching valves.

The electromagnets Y5 and Y6 of the electromagnetic reversing valve respectively control whether the large flow pump 212 and the small flow pump 211 supply oil to the system. Y4 of the electromagnetic reversing valve controls the connection state of the pressure oil of the system and the return oil circuit. When an emergency failure occurs in the system, Y4 of the electromagnetic reversing valve is energized, and the oil supply system unloads and stops suddenly.

In addition, the multi-way valve group 502 has multiple sets of oil circuit device connectors 614 at the oil supply/return port of the hydraulic system to be rescued, so as to facilitate power supply for systems with different flow requirements.

Among them, electromagnets Y7 and Y8, electromagnets Y9 and Y10, and electromagnets Y10 and Y11 of the electromagnetic reversing valve respectively control the supply of hydraulic power to the rescue equipment with different flow requirements.

It should be pointed out that the accumulator 615 is connected with the control oil circuit of the multi-way valve group 502 to improve the stability of the control oil circuit. The one-way valve 621 is connected to the oil return port of the multi-way valve group 502 to improve the system back pressure and oil return stability. The oil return filter 620 is installed on the oil return line for filtering impurities in the hydraulic system.

The liquid-pneumatic power emergency equipment and liquid-pneumatic control method provided by the embodiments of the present invention can not only provide a hydraulic power source, but also provide a gas source, The high-pressure water source is used for on-site pneumatic actuator operations, cleaning of the site and equipment. It integrates multiple functions, one machine with multiple functions, and can meet a variety of different needs at the same time, and has a wide range of applications. Wherein, the hydraulic oil is supplied by the dual-flow pump, and the oil can be supplied according to different flow and pressure requirements, and the energy consumption generated during the system execution is lower.

The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present invention. All should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope of the claims.

Claims (9)

1. A liquid-pneumatic power emergency equipment, characterized in that it comprises a movable chassis, an engine located on the movable chassis, an air pressure supply system, an oil pressure supply system and a water pressure supply system, and the air pressure supply The system includes an air storage tank, an air pump, an air control valve assembly and a pneumatic actuator. The air pump pressurizes the gas in the air storage tank and delivers it to the pneumatic actuator through the air control valve assembly. The oil The pressure supply system includes an oil tank, a dual-flow pump, an oil control valve assembly, and an oil circuit device connector. The dual-flow pump pressurizes the oil in the oil tank and delivers it to the oil circuit device connector through the oil control valve assembly. The water pressure supply system includes a water storage tank, a water pump, a water control valve assembly and a water spray gun. The water pump pressurizes the water in the water storage tank and delivers it to the water spray gun through the water control valve assembly. , the dual-flow pump is connected to the water pump to provide power for it. 2. The liquid-pneumatic power emergency equipment according to claim 1, wherein the dual flow pump comprises a parallel small flow pump and a large flow pump, and the small flow pump is used to pump small flow hydraulic oil, so The high-flow pump is used for pumping large-flow hydraulic oil, and the hydraulic oil is delivered to the joints of oil circuit components through the small-flow pump and the large-flow pump respectively. 3. The liquid-pneumatic power emergency equipment according to claim 2, characterized in that, both the small flow pump and the large flow pump are load sensitive pumps. 4. The hydraulic-pneumatic power emergency equipment according to claim 2, wherein the oil control valve assembly includes a connected integrated valve group and a multi-way valve group, and the hydraulic oil is delivered through the small flow pump and the large flow pump After reaching the integrated valve group and the multi-way valve group, it reaches the joint of the oil circuit device. 5. The liquid-pneumatic power emergency equipment according to claim 1, characterized in that, the air control valve assembly includes a gas first cut-off valve, an oil-water separator, a gas pressure reducing valve, a lubricator and a gas first stop valve connected in sequence. Two cut-off valves, the second gas cut-off valve is connected with the pneumatic actuator. 6. The hydropneumatic power emergency equipment according to claim 1 or 5, characterized in that the pneumatic actuator is a pneumatic grinder or a pneumatic gun. 7. The liquid-pneumatic power emergency equipment according to claim 5, characterized in that, the air pressure supply system further comprises an air filter combination triplet, and the air filter combination triplet includes an oil-water separator, a damper, and an oil circuit connected sequentially. pressure valve and lubricator. 8. The hydraulic-pneumatic power emergency equipment according to claim 1, characterized in that, the water control valve assembly includes a hydraulic shut-off valve connected to the oil circuit and an integrated valve, and the integrated valve includes a hydraulic unit connected to the oil circuit. The directional valve, water pressure throttle valve and water pressure relief valve are used to protect the water pump, throttle and adjust pressure, and set the overflow pressure of the system respectively. 9. A liquid-pneumatic control method, comprising the liquid-pneumatic power emergency equipment according to any one of claims 1-8, further comprising the following steps: S1, check whether the equipment status is normal, and the equipment is turned on and running; S2, judging whether to provide hydraulic power to the system to be rescued, if yes, the dual-flow pump pressurizes the oil in the oil tank and delivers it to the joint of the oil circuit device through the oil control valve assembly; if no, then It is judged whether it is necessary to start the air pressure supply system, if the judged result is yes, the air pump pressurizes the gas in the air storage tank and transports it to the pneumatic actuator through the air control valve assembly, if the judged result is no, then It is judged whether to start the water pressure supply system, if the judged result is yes, the water pump pressurizes the water in the water storage tank and delivers it to the water spray gun through the water control valve assembly, if the judged result is no, return to step S1.

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