WO2004016974A1 - Soupape de retour - Google Patents

Soupape de retour Download PDF

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Publication number
WO2004016974A1
WO2004016974A1 PCT/JP2002/008283 JP0208283W WO2004016974A1 WO 2004016974 A1 WO2004016974 A1 WO 2004016974A1 JP 0208283 W JP0208283 W JP 0208283W WO 2004016974 A1 WO2004016974 A1 WO 2004016974A1
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WO
WIPO (PCT)
Prior art keywords
iron
pressure relief
relief valve
valve seat
containing sphere
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.)
Ceased
Application number
PCT/JP2002/008283
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English (en)
Japanese (ja)
Inventor
Kunitaka Mizobe
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to JP2004528818A priority Critical patent/JPWO2004016974A1/ja
Priority to PCT/JP2002/008283 priority patent/WO2004016974A1/fr
Priority to AU2002328614A priority patent/AU2002328614A1/en
Publication of WO2004016974A1 publication Critical patent/WO2004016974A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F16K31/08—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid using a permanent magnet
    • F16K31/084—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid using a permanent magnet the magnet being used only as a holding element to maintain the valve in a specific position, e.g. check valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side

Definitions

  • the present invention relates to a water vapor transfer control device, a dehumidifying device, a humidifying device, and an airtightness inspection device (hereinafter referred to as a “used device”) used for the setting thereof due to a human error in application or an unavoidable unexpected abnormality. ”) To use the pressure relief valve to maintain the functionality of the pressure relief valve.
  • the present invention relates to a pressure relief valve which is used to prevent malfunctions caused by these used devices as much as possible.
  • the present inventor has already proposed a water vapor transfer control device that uses a moisture permeable membrane to control the humidity inside the box.
  • this water vapor transfer control device has a cylindrical body 1 in which an inner end port 10 communicates with the inside of a box body K and an outer end port 11 is opened to the outside air.
  • Three moisture permeable membranes (the first membrane Ml, the second membrane M2, and the third membrane M3) are divided into two small chambers 21 and 22.
  • the first film M 1, the second film M 2, and the third film M 3 are collectively referred to as a symbol M).
  • 1, 32, 33 (for example, metal mesh, synthetic resin mesh, etc.) are provided as membrane support structures.
  • a second film M2 and a third film M3 using cloth are used.
  • the first film Ml, the second film M2, and the third film M3 are used to prevent invasion of water vapor from outside air.
  • the outer surface facing the outer end port 11 is formed of a water-repellent layer made of polyethylene. At least two flat membranes are used for such a water vapor transfer control device, dehumidifier, and humidifier.
  • At least one small chamber consisting of a boundary part that constitutes a boundary surface for the movement of water vapor and air using a moisture-permeable waterproof membrane made of Place a conductive porous body or a porous body with different thermal conductivity near a possible waterproof membrane, in a small room, or in a ventilation path. Therefore, the characteristics of water vapor transfer and air transfer characteristics are adjusted by the arrangement of substances having different heat capacities in the ventilation path.
  • a common feature of these components is the use of a flat membrane-like moisture permeable membrane.
  • the diameter of the water vapor is 0.000 im (Fiber Handbook: 2nd edition) : Published on February 15, 1995: Maruzen Institute of Textile Sciences: p. 5 2 3) A membrane with an average pore size of 1.0, 1.2, 1.5 zm, etc. ing.
  • the water vapor movement control device, dehumidification device, and humidification device respond to minute changes in temperature in response to changes in the movement characteristics of water vapor and air. It is used to reflect changes in the surface temperature of a flat, easy-to-use, water-permeable, water-repellent membrane that is permeable to moisture.
  • a conventionally used stretchable and inferior rigid woven fabric / fiber fabric using non-woven fabric is used.
  • the humidity control functions of the water vapor transfer control device, dehumidifier, humidifier, etc. control the amount of water vapor that can be processed per unit time and the air permeability, which limit the amount of water vapor that can be processed per unit time.
  • the adjustment is made using the moisture absorption of the fiber material and the water-repellent surface due to the passing water vapor.
  • This adjusting means is constantly generated in response to temperature changes due to compression and expansion due to adiabatic consideration, which are caused by the permeability of the moisture permeable membrane and the positional relationship that forms the small chamber of the moisture permeable membrane having different moisture permeability.
  • the efficiency of the heat exchange is adjusted using materials with different thermal conductivity, such as porous materials, 'J's, and room structures.
  • the application may exceed the safe use range caused by, for example, application to a volume beyond the applicable range or to a temperature change environment beyond the applicable range.
  • Phenomena such as physical tearing or cracking of the water-repellent surface due to water-repellent materials (substances with high dielectric properties and low water absorption) processed into woven fiber materials, as well as moisture-permeable membrane substrates such as tearing and tearing of fiber materials Damage to the membrane causes damage to the water vapor transfer control mechanisms such as the humidity control function, dehumidification function, and humidification function.
  • the moisture permeable membrane changes over time due to the initial use (line A1), 5-year use (line A2), and 0-year use (line A3).
  • An example is shown. This change over time is affected by the cleanliness of the air in the environment in which the steam transfer controller is set.
  • the membranes with the smallest air permeability and other moisture-permeable membranes also utilize the inside of the complex-shaped pores existing in the membrane as air passages, and the inside of these pores Is gradually contaminated by air pollutants such as dust and oil mist contained in the passing air.
  • Membrane surface of membrane support structure such as conductive porous body and heat insulating porous body
  • the shape on the side oriented to the plane is adjusted and the positional relationship is adjusted.
  • the humidity control function of the water vapor transfer control device adjusts the appropriate application depending on the amount of water vapor that can be processed per unit time and the air permeability that forms the boundary of air movement. It must be applied within the range of appropriate conditions, taking into account the volume of the space to be wet, the temperature change condition of the space to be humidified, and the atmospheric pressure as the effect of the altitude to be set.
  • the application may be applied to a volume that exceeds the applicable range or to a temperature change condition that exceeds the applicable range. Deformation or tensioning of the membrane due to extreme pressure, and thus premature breakage, is most likely to occur on the smallest permeable or permeable membrane or the membrane that has clogged. We are utilizing.
  • auxiliary function protection means by perforating or detaching the target moisture permeable membrane
  • the pressure change amount for exhibiting the functionality of the auxiliary function protection means is a disadvantage.
  • these operating thresholds may cover a wider range of application cases, depending on the volume of the space subject to humidity control, humidification, dehumidification, etc., and the thermodynamic environment in which this space is located.
  • the design and preparation of the water vapor transfer control device, humidifying device, dehumidifying device, and the hermeticity inspection device which must be used in common when setting these, should be adapted to various application cases.
  • the disadvantage is that adjustments or design types increase.
  • Water vapor transfer control device which is caused by abnormal pressure or surface contamination that causes deterioration of water vapor or air movement characteristics, which may be caused by deterioration of the boundary of water vapor or air movement for a long time.
  • the elastic bodies may harden with the aging of the elastic bodies, and the deteriorated elastic body components may hinder the opening of the valves.
  • the operating thresholds had large variations.
  • the pressure relief valve of the present invention is proposed to solve the above-described problems, and is scheduled to have a moisture-permeable membrane (a moisture-permeable waterproof membrane) that forms an air passage of the steam movement control device as described above. Prevent dysfunction of humidity control performance due to fouling of moisture permeable membranes that may occur after use beyond the specified usage period.
  • the water vapor transfer control device, dehumidifier, humidifier It is anticipated that abnormal pressures will occur in the space in which the settings are made, or that the airtightness inspection equipment used in these settings will cause adverse effects. 0 Prevent.
  • a steam transfer control device that accompanies changes in steam transfer characteristics due to the destruction of the boundary between steam and air movement and rapid deterioration described above, a humidifier, a dehumidifier, and an airtightness inspection device used when setting these Prevent the occurrence of local abnormal pressure inside.
  • this pressure relief valve is that it can be operated at a low pressure threshold such as 5 cm water column and high pressure such as 1 m to 1.5 m water.
  • the pressure condition which is the operating threshold value, does not change even after long-term use, and the rate of deterioration is slow, so that it can be used stably. It can maintain the pressure operation threshold required for the operation characteristics of dehumidifiers and humidifiers. For example, in a general valve mechanism using a spring, these deterioration rates are largely caused by a change in elasticity of the spring itself and a problem of metal corrosion of the spring itself. Invention
  • a box equipped with a water vapor transfer control device, an airtightness inspection device used for setting the water vapor transfer control device, and the like are used devices.
  • a vent passage with one end connected to the equipment to be used and a vent at the other end open into the valve chamber, and an exhaust passage at one end communicating with the atmosphere and an exhaust port at the other end open into the valve chamber.
  • An iron-containing sphere as a valve element is accommodated in the valve chamber, and the iron-containing sphere is normally kept tightly attached to a valve seat formed so as to surround the ventilation port, and is provided with a ventilation path.
  • a pressure relief valve that is configured to cut off communication with the exhaust path, and separate from the valve seat to allow communication between the air path and the exhaust path when abnormal pressure occurs in the device to be used.
  • a magnet is used as means for holding the iron-containing sphere in close contact with the valve seat
  • the magnet is arranged at a distance from the iron-containing sphere and the valve seat in a state where the iron-containing sphere is in close contact with the valve seat,
  • the magnetic force for attracting and holding the iron-containing sphere in close contact with the valve seat is adjusted to an operation threshold value required for the operation of the used device.
  • this pressure relief valve since the magnet keeps a distance from the iron-containing sphere and the valve seat, the magnet powder or the magnetically attracted substance (such as iron powder) that may adhere to the magnet causes the iron to be removed.
  • the surface of the containing sphere can be prevented from being stained, and the generation of magnet powder caused by the movement of the sphere can be prevented.
  • the valve operation can be performed at extremely low pressure.
  • the magnet and the iron-containing sphere are separated from each other at a distance where they do not come into contact with each other, that is, the distance between the magnet and the iron-containing sphere is maintained even at the time of closest approach, so that the iron-containing sphere is not magnetized.
  • the suction force of the sphere to the valve seat does not decrease. That is, the iron-containing sphere, the valve seat, and the magnet are electrically insulated, and the iron-containing sphere has a small movement distance, so that the iron-containing sphere, which is a temporary magnetic material, is not easily magnetized.
  • the adsorption force to the valve seat is stable and hardly changes over time.
  • pollutants such as foreign magnetically attracted substances (iron powder, etc.) from the equipment to be used and the outside air (exhaust gas oil, dust, It can prevent magnet powder and magnetically attracted substances (iron powder, etc.) that may adhere to small magnets and magnets from entering the valve chamber.
  • a separation adjusting unit configured to move the magnet in an axial direction of the cylinder to adjust a separation distance between the magnet, the iron-containing sphere, and the valve seat.
  • the magnetic force for attracting the iron-containing sphere to the valve seat and keeping it in close contact with the iron-containing sphere can be obtained.
  • valve operation can be performed at extremely low pressure, and it can be adjusted accurately to the operation threshold required for the operation of the device to be used be able to.
  • the mounting position of the magnet can be adjusted, and the attraction force of the magnet to the iron-containing sphere can be adjusted.
  • the adjustment width by the separation adjusting means can be widened.
  • the exhaust port may be blocked by the iron-containing sphere.
  • the exhaust port is blocked in this way, it becomes impossible to release the abnormal pressure, and a trap is generated on the used device side.
  • the iron-containing sphere a material having a surface passivation and corrosion-resistant layer such as a ball bearing ball made of low-quality stainless steel ball is preferable.
  • the iron-containing sphere is a temporary magnet that also changes into a magnetic material. Yes, it is a soft (soft) magnetic material.
  • FIG. 1 is a sectional view showing the pressure relief valve of the first embodiment.
  • Fig. 2 is a diagram showing the operating state of the pressure relief valve.
  • Figure 3 is a cross-sectional view showing the separation and close contact between the iron-containing sphere and the valve seat. is there.
  • FIG. 4 is a cross-sectional view showing the separated / close contact state between the iron-containing sphere and the valve seat.
  • FIG. 5 is a cross-sectional view showing the separated / closed state between the iron-containing sphere and the valve seat.
  • FIG. 6 is a cross-sectional view showing an example of a mounting structure of the packing to the valve seat.
  • FIG. 7 is a sectional view showing an example of a mounting structure of the packing to the valve seat.
  • FIG. 8 is a perspective view showing a ventilation groove formed in the valve chamber.
  • FIG. 9 is a sectional view showing a pressure relief valve according to the second embodiment.
  • FIG. 0 is a cross-sectional view showing an example in which the pressure relief valve is assembled to the steam movement control device.
  • FIG. 1 is a sectional view showing a pressure relief valve according to a third embodiment.
  • FIG. 2 is a diagram showing a use state of the pressure relief valve.
  • Figure 13 is a graph showing the results of a limit pressure test of a pressure relief valve using a low water pressure test device.
  • FIG. 14 is a sectional view showing a conventional water vapor transfer control device.
  • Figure 15 is a graph showing the change in humidity control ability due to the aging of the moisture permeable membrane.
  • FIG. 16 is a diagram showing the elongation of the moisture permeable membrane as a function of time.
  • FIG. 7 is a diagram showing the pressure applied to the box in a daily change.
  • FIG. 1 is a cross-sectional view showing the pressure relief valve of the first embodiment
  • Fig. 2 is a diagram showing the operating state of the pressure relief valve
  • Fig. 3 (a), (port), Fig. 4 (a), (port), Fig. 5 (a) and (mouth) are cross-sectional views showing the separation and close contact between the iron-containing sphere and the valve seat
  • FIGS. 6 and 7 are cross-sectional views showing an example of the mounting structure of the packing to the valve seat.
  • FIG. 8 is a perspective view showing a ventilation groove formed in the valve chamber.
  • the pressure relief valve V1 of the present invention is, as shown in FIG. 2, a box K provided with a water vapor transfer control device S, and as shown in FIG. 12, an airtightness used for setting the water vapor transfer control device S.
  • the inspection device T is used as a device to be used
  • the pressure relief valve VI of the first embodiment is an example in which the pressure relief valve VI is attached to a box K provided with a water vapor movement control device S.
  • the configuration of the water vapor transfer control device S is the same as the configuration of FIG.
  • reference numeral 4 denotes a cylinder, which includes a ventilation side cylinder 41 and an exhaust side cylinder 42.
  • the screw section 41a of the ventilation side cylinder 41 is connected to an exhaust side cylinder. Screwed into the screw hole 42 a of the cylinder 42 to be integrally connected.
  • the ventilation side cylinder 41 and the exhaust side cylinder 42 are made of a transparent synthetic resin (acryl, polycarbonate, etc.), the internal state can be seen and water droplets (condensation) can be seen. You can check the state of the sphere, such as the adhesion of mackerel, mackerel and dirt.
  • anti-biological 7 Synthetic resin A UV-resistant synthetic resin can be used, or the cylinder 4 can be protected by providing a sunshade or covering it with a heat-resistant material.
  • the upper end of the ventilation side cylinder 41 is attached to a box K as a device to be used via a connecting member 43, and an assembling hole 44 is formed at the center thereof.
  • a ventilation pipe 46 having an inside formed in an air passage 45 is attached in the axial direction of the ventilation cylinder 41.
  • the upper end of the ventilation passage 45 is communicated with the inside of the box K, while the ventilation hole 47 at the lower end is opened in the valve chamber 48, and the ventilation pipe 46 is surrounded by the ventilation hole 47.
  • a valve seat 49 is formed on the lower end surface.
  • a filter 50 as an air filtration means is mounted, and screwed into the mounting hole 44. By attaching and detaching the end member 51, the filler 50 can be replaced.
  • the valve seat 49 has a form in which a ring-shaped packing 52 is attached along the inner edge of the ventilation port 47 of the ventilation path 45, as shown in FIG.
  • the ring-shaped packing 53 attached along the outer edge of the ventilation pipe 46, as shown in Fig. 5, and with the lower end face of the ventilation pipe 46 simply formed as a concave surface.
  • the configuration shown in FIG. 3 is the most preferable in order to prevent adhesion to the iron-containing sphere 8 while ensuring close contact with the iron-containing sphere 8 as a valve.
  • FIGS. 3, 4, and 5 (a) shows a state in which the iron-containing sphere is separated from the valve seat, and (port) shows an iron-containing sphere in close contact with the valve seat. 8 is shown.
  • the material of the ventilation pipe 46 forming the valve seat 49 a permeable material is required.
  • Teflon (registered trademark) material, stainless steel material, copper, brass, ceramic, and the like can be considered.
  • brass has good workability and good touch resistance, but low-quality stainless steel is preferable in terms of strength, but it may be a temporary magnetic material (temporary magnet). Materials that can become temporary magnets are not preferred for the ventilation tube 46.
  • the ventilation pipe 46 forming the valve seat 49 is required to have oil resistance, and it is necessary to select a substance which is not easily corroded.
  • the material of the ring-shaped packing 52 it is necessary to select a material that can withstand high temperatures and has high oil resistance in consideration of weather resistance.
  • oil components such as exhaust gas may float in the air, and such contaminated air may contaminate the valve seat 49. Therefore, as the materials used for the nozzle 52, nitrile rubber (NBR;), acryl rubber (ACM), silicone rubber (VMQ), fluorine rubber (FKM), and the like are used.
  • NBR nitrile rubber
  • ACM acryl rubber
  • VMQ silicone rubber
  • FKM fluorine rubber
  • FKM fluoro rubber
  • FIGS. 6 and 7 are cross-sectional views showing examples of the mounting structure of the packing to the valve seat.
  • the outer diameter of the knockers 54, 55 is formed to be larger than the inner diameter of the fitting groove 56, thereby bonding the knockers 54, 55, the fitting groove and 56. They are tightly adhered to each other without being adhered with an agent or the like to ensure sealing.
  • an exhaust path 60 is formed at the center of the exhaust-side cylinder 42 so as to be in line with the above-described ventilation path 45, and the lower end of the exhaust path 60 is air-tight.
  • the exhaust port 61 at the upper end is opened into the valve chamber 48.
  • a semicircular recess 62 forming the inner surface of the valve chamber 48 is formed on the upper end surface of the exhaust-side cylinder 42 so as to surround the exhaust port 61 of the exhaust path 60.
  • the upper edge of the semicircular recess 62 is chamfered to the tapered surface 63.
  • a filter 50a as an air filtering means is mounted, and is screwed to a lower end of the exhaust-side cylinder 42.
  • the filler 50a can be replaced.
  • the valve chamber 48 accommodates an iron-containing sphere 8 as a valve, and the iron-containing sphere 8 is always kept in close contact with the valve seat 49. And the communication between the ventilation path 45 and the exhaust path 60 is interrupted.
  • the iron-containing sphere 8 a material having a surface immobilization corrosion-resistant layer such as a bearing ball made of low-quality stainless steel ball is preferable.
  • the iron-containing sphere 8 is a temporary magnet that changes into a magnetic material, and is a soft (soft) magnetic material.
  • a vent groove 64 communicating with the exhaust path 60 is formed in the exhaust cylinder 42 directly at a portion extending from the taper surface 63 to the taper surface 63.
  • a magnet 7 (permanent magnet) is used as means for holding the iron-containing sphere 8 in close contact with the valve seat 49.
  • the magnet 7 has a magnetic force for attracting the iron-containing sphere 8 to the valve seat 49 and holding the iron-containing sphere 8 in close contact with the valve seat 49, at an operation threshold value required for the operation of the water vapor movement control device S attached to the box K.
  • the magnet 7 is arranged at a distance from the iron-containing sphere 8 and the valve seat 49 in a state where the iron-containing sphere 8 is in close contact with the valve seat 49. 2
  • two ring-shaped magnets 7, 7 are superimposed on a cylinder hole 71 formed inside the ventilation side cylinder 41, and a gap is formed between the cylinder and the ventilation pipe 46. The gap is retained and fitted, so that a gap is provided between the magnet 7 and the iron-containing sphere 8 and the valve seat 49.
  • the magnet 7 is moved in the axial direction of the cylinder 4 so as to adjust the separation distance between the magnet 7, the iron-containing sphere 8 and the valve seat 49. Is provided.
  • a spring 72 is provided at the back of the cylinder hole 71, and the magnet 7 is normally attached to the exhaust cylinder 42 by the spring 72. It is urged in the opposite direction (downward in the drawing) via the intervening member 73.
  • the separation distance is adjusted by using a screw engagement between the screw portion 42a and the screw hole 41a of the exhaust side cylinder 42 with respect to the ventilation side cylinder 41.
  • the exhaust-side cylinder 42 is loosened in the retreating direction (downward in the drawing)
  • the magnet 7 is urged by the spring 72 to move downward, and the magnet 7 is moved to the iron-containing sphere. 8 and the valve seat 49 are approached, and a strong magnetic force can be applied to the iron-containing sphere 8.
  • the adjustment of the separation distance that is, the adjustment of the limit pressure is performed by tightening or loosening the exhaust-side cylinder 42.
  • scales 74, 75 that convert the separation distance to the limit pressure are displayed on the exhaust-side cylinder 42 and the vent-side cylinder 41 so that the degree of adjustment can be visually checked. I have.
  • the scales 74 and 75 it is preferable to use a vernier scale such as that used for a caliper as a distance measuring device for accurate adjustment.
  • the scales 74 and 75 may indicate the volume of the box K to be attached or the average temperature band in the region where the scale is used, so that simple adjustments may be made.
  • the iron-containing sphere 8 depends on the magnetic force in contact with the valve seat 49, and the adhesion force is increased by the weight of the iron-containing sphere 8, as shown in FIG. to be influenced.
  • FIG. 9 is a sectional view showing a pressure relief valve according to a second embodiment.
  • the magnet is fitted into the cylinder hole formed inside the ventilation side cylinder 41, and at the same time, the magnet is fitted inside the exhaust side cylinder 42.
  • a magnet 76 is attached, and the magnets 7 and 76 are arranged so that the same magnetic poles (S poles in the drawing) face each other.
  • the other configuration is the same as that of the first embodiment.
  • FIG. 10 is a cross-sectional view showing an example in which the pressure relief valve V 1 is assembled to the steam movement control device S.
  • the water vapor transfer control device S is provided with an outer case 35 on the outer periphery thereof via a heat retaining jacket 34.
  • An extension pipe 36 is piped through the heat insulation jacket 34, and the upper end of the extension pipe 36 is opened into the box K, and the lower end of the extension pipe 36 is connected to the pressure relief valve VI. It has a structure that communicates with the upper end of the ventilation path 45.
  • the pressure relief valve VI is integrated with the steam movement control device S, and its handling is convenient.
  • FIG. 11 is a sectional view showing a pressure relief valve according to a third embodiment
  • FIG. 12 is a view showing a use state of the pressure relief valve.
  • the pressure relief valve V 3 of the third embodiment is an example in which the pressure relief valve V 3 is attached to an airtightness inspection device T used for setting the steam movement control device S.
  • the airtightness inspection device T does not apply stress to the film body M or the box body K of the water vapor transfer control device S by applying a slight pressure, and is highly sensitive and accurate. By inspecting the airtightness of K, it is possible to detect leaks in airtightness due to breakage of the box K or tearing of the membrane M.
  • the structure is such that a pressure intake casing 86 having a pressure buffer space 85 formed therein and a pressure intake casing 86 at the end are connected to each other.
  • An upstream air supply pipe 88 whose base end is connected to the gas injection device 87, and a downstream air supply pipe whose base end is connected to the inside of the box K and whose base end is connected to the pressure intake casing 86.
  • a pressure gauge 92 is provided.
  • the upstream air-supply pipe 88 and the downstream air-supply pipe 89 are connected to a pressure intake casing 86 in a state of being arranged in a straight line, and a distal end pipe section 8 8a of the upstream air-supply pipe 88 is provided. Is the downstream air supply pipe
  • the upstream air supply pipe 88 and the downstream air supply pipe 89 are branched so as to have an angle (perpendicular) to the straight line where they are arranged, connected to the pressure intake casing 86, and sent from the gas injection device 87.
  • the incoming gas is sent from the upstream air supply pipe 88 to the downstream air supply pipe 89 to the inside of the box K, and the return gas reflected from the inside of the box K is sent downstream.
  • the return pressure intake pipe 91 takes in the differential pressure gauge 92 from the return pressure intake pipe 91, and the return gas taken in from the return pressure intake pipe 91 to the differential pressure gauge 92 comes out. It is configured to measure a differential pressure between the pressure and the pressure of the forward gas taken into the differential pressure gauge 92 from the forward pressure intake pipe 90.
  • the pressure of the outgoing gas was If the pressure is greater than the pressure of the return gas, the difference The pressure gauge 92 indicates the differential pressure, it is determined that the box K or the membrane M is damaged and the airtightness is leaking, and the pressure of the outgoing gas and the pressure of the returning gas are almost equal. In the same case, the differential pressure gauge 92 does not indicate the differential pressure, so it is determined that the airtightness is maintained.
  • a water receiver 93 is provided at the end of the downstream air supply pipe 89 to receive water flowing down from the inside of the box K.
  • the upstream air supply pipe 88 is provided with a pressure safety valve V 3 on the upstream side of the upstream pressure intake pipe 90.
  • the pressure relief valve V3 is attached to the inspection casing 94 with the pressure relief valve V1 shown in the first embodiment turned upside down.
  • connection fitting 77 connected to the air passage 45 is attached to the lower end of the ventilation side cylinder 41, and the connection fitting 77 and the upstream air supply pipe 88 are connected by a flexible hose 78. It has been.
  • the weight of the iron-containing sphere 8 is added to the valve seat 49, so that it is necessary to adjust the attraction force of the magnet 7 in consideration of the weight of the iron-containing sphere 8.
  • the magnet 7 moves the iron-containing sphere 8 and the valve seat in a state where the iron-containing sphere 8 is in close contact with the valve seat 49.
  • one ring-shaped magnet 7 is inserted into a cylinder hole 7 1 formed inside the ventilation side cylinder 41, and The gap between the magnet 7 and the iron-containing sphere 8 is provided by attaching a gap 79 between the magnet 7 and the intervening member 73 while holding the gap in the tube with the gap 6. Can be adjusted.
  • the mounting position of the magnet 7 (the distance from the iron-containing sphere 8) can be adjusted, and the attraction force of the magnet 7 to the iron-containing sphere 8 can be adjusted. it can.
  • the magnetic force of the magnet 7 is an example using a permanent magnet of about 30.8 gf / cm 2 with the weight of the iron-containing sphere 8 being about 5 g.
  • Figures 1, 9, and 11 are shown.
  • the magnet is made of a hard magnetic material made of Alnico R-Co; Ba ferrite, or a soft magnetic material made of Fe—Si; Mn—Zn ferrite. Although a hard magnetic material can be used, a hard magnetic material is preferred.
  • a mold-proof resin is used for each component of the box and the pressure relief valve, such as a water vapor transfer control device and an airtightness inspection device, and a grease-proof agent or a water-repellent agent is used for the surface.
  • a temperature indication paint may be applied to an appropriate part (particularly, a ventilation path of a pressure relief valve) and the like, and an abnormal temperature may be displayed.
  • FIG. 13 is a graph showing the test results of the limit pressure of the pressure relief valve of the present invention.
  • Line C 1 Limit pressure when two magnets 7, 7 are placed below iron-containing sphere 8
  • Line C 2 Limiting pressure when one magnet 7 is arranged above the iron-containing sphere 8 via a spacer 79
  • Line C 3 Limit pressure when one magnet 7 is arranged below iron-containing sphere 8 via spacer 79 (third embodiment)
  • Line C 4 Limit pressure when two magnets 7, 7 are arranged above iron-containing sphere 8 (first embodiment)
  • Line C 5 Limit pressure when one magnet 7 is placed above and below iron-containing sphere 8
  • the limit pressure is high when the magnet 7 is approaching the iron-containing sphere 8, and the limit pressure decreases as the magnet 7 moves away from the iron-containing sphere 8.
  • the distance between the magnet 7 and the iron-containing sphere 8 and the valve seat 49 can be adjusted by the distance adjusting means, and the mounting position of the magnet 7 (iron-containing It can be understood from FIG. 13 that the attraction force of the magnet 7 to the iron-containing sphere 8 can be adjusted by adjusting the distance between the sphere 8 and the sphere 8.
  • the limit pressure is gradually reduced as the magnet 7 moves away from the iron-containing sphere 8.
  • the shapes of the line C 3, the line C 4, and the line C 5 are preferable.
  • the pressure relief valve according to the present invention can be used when the internal local abnormal pressure of the steam transfer control device, the humidifying device, the dehumidifying device, and the airtightness inspection device used at the time of setting them is generated. Abnormal pressure can be released and membrane breakage can be prevented. Also, since the adsorbing force of the magnet 7 on the iron-containing sphere 8 can be adjusted, the limit pressure of the pressure relief valve can be adjusted.
  • a water vapor transfer control device for example, one type of water vapor according to a predetermined standard is used.
  • a movement control device and adjusting the limit pressure of the pressure relief valve at this time one type of water vapor movement control device can be applied to a box having different sizes, installation environments, and materials.
  • the pressure safety valve may be operated within a range L1 further inside the safe use range L of the membrane, Also, the pressure relief valve may be operated in a range exceeding the safe use range L as long as the pressure is within the decompressible pressure range L 2.
  • a steam transfer control device a humidifier, a dehumidifier, and a steam transfer device associated with a change in steam transfer characteristics due to destruction or rapid deterioration of the boundary between steam and air transfer, and
  • an internal local abnormal pressure such as an airtightness inspection device used at the time of setting is generated, the abnormal pressure can be released to prevent the membrane from being damaged.
  • the magnet since the magnet keeps a distance from the iron-containing sphere and the valve seat, it may be adhered to the magnet due to magnet powder or magnetically attracted substances (iron powder, etc.). Therefore, it is possible to prevent the surface of the iron-containing sphere from being soiled, and to prevent the generation of magnet powder caused by the movement of the sphere.
  • the cutting powder generated by the wear of the magnet and the iron-containing sphere is absorbed by the magnet, so that the airtightness between the valve seat and the iron-containing sphere is not hindered.
  • the valve operation can be performed at extremely low pressure.
  • the magnet and the iron-containing sphere are separated from each other at a distance where they do not come into contact with each other, i.e., the distance between the magnet and the iron-containing sphere is maintained even at the time of closest approach, so that the iron-containing sphere may be magnetized.
  • the suction force of the sphere to the valve seat does not decrease.
  • the iron-containing sphere, the valve seat, and the magnet are electrically insulated, and the iron-containing sphere has a small movement distance.
  • the adsorption force to the valve seat is stable and hardly changes over time.
  • the separation adjusting means since the separation adjusting means is provided, the magnetic force for adsorbing the iron-containing sphere to the valve seat and keeping the iron-containing sphere in close contact with the magnet is a delicate distance between the iron-containing sphere and the magnet.
  • the valve operation can be performed at an extremely low pressure, and the operating threshold value required for the operation of the used equipment can be adjusted appropriately. Can be.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Safety Valves (AREA)

Abstract

L'invention concerne une soupape de retour destinée à empêcher, autant que possible, un défaut de fonctionnement d'un régulateur de déplacement de la vapeur, ou analogue, dû à une application artificielle erronée ou à une anomalie fortuite inévitable. La soupape de retour libère dans l'atmosphère une pression anormale survenant dans l'appareil en cours d'utilisation, par exemple un boîtier K muni d'un régulateur de déplacement de la vapeur S. La soupape de retour établit ou coupe la communication entre un circuit d'aération (45) et un circuit d'échappement (60), au moyen d'une bille (8) contenant du fer. Un aimant (7) est utilisé comme moyen de maintenir la bille contenant du fer en contact serré avec un siège de soupape (49). L'aimant est disposé à distance de la bille contenant du fer et du siège de soupape, la bille contenant du fer étant maintenue au contact du siège de soupape. Une force magnétique, destinée à attirer la bille contenant du fer vers le siège de soupape et à les maintenir serrés l'un contre l'autre, est réglée sur une valeur de seuil requise pour le fonctionnement de l'appareil utilisé.
PCT/JP2002/008283 2002-08-14 2002-08-14 Soupape de retour Ceased WO2004016974A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2004528818A JPWO2004016974A1 (ja) 2002-08-14 2002-08-14 圧力安全弁
PCT/JP2002/008283 WO2004016974A1 (fr) 2002-08-14 2002-08-14 Soupape de retour
AU2002328614A AU2002328614A1 (en) 2002-08-14 2002-08-14 Pressure relief valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2002/008283 WO2004016974A1 (fr) 2002-08-14 2002-08-14 Soupape de retour

Publications (1)

Publication Number Publication Date
WO2004016974A1 true WO2004016974A1 (fr) 2004-02-26

Family

ID=31742933

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2002/008283 Ceased WO2004016974A1 (fr) 2002-08-14 2002-08-14 Soupape de retour

Country Status (3)

Country Link
JP (1) JPWO2004016974A1 (fr)
AU (1) AU2002328614A1 (fr)
WO (1) WO2004016974A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017196295A1 (fr) * 2016-05-09 2017-11-16 Cummins Inc. Piston régulateur de pression à clapet anti-retour intégré
WO2018029206A1 (fr) * 2016-08-09 2018-02-15 Minimax Gmbh & Co. Kg Système de commande pour une installation d'extinction d'incendie et dispositif de sécurité
KR20190078289A (ko) * 2017-12-26 2019-07-04 주식회사대성엘텍 방향 용기용 밸브 조립체
CN111624373A (zh) * 2020-07-01 2020-09-04 强一半导体（苏州）有限公司 功率器件测试探针卡用磁力式泄压结构及其安装标定方法
CN111795188A (zh) * 2019-04-03 2020-10-20 株式会社不二工机 阀装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5584356U (fr) * 1978-12-07 1980-06-10
JPS56101470A (en) * 1979-07-30 1981-08-14 Shimizu Mitsuru Vibration intercepter
JPS58157078U (ja) * 1982-04-15 1983-10-20 第一精工株式会社 調圧弁
JPS60180875U (ja) * 1984-05-11 1985-11-30 日産自動車株式会社 チエツクバルブ
JPH01220784A (ja) * 1988-02-25 1989-09-04 Nippon Valqua Ind Ltd バルブ
JPH03107679A (ja) * 1989-09-20 1991-05-08 Daikin Ind Ltd 開閉弁

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5584356U (fr) * 1978-12-07 1980-06-10
JPS56101470A (en) * 1979-07-30 1981-08-14 Shimizu Mitsuru Vibration intercepter
JPS58157078U (ja) * 1982-04-15 1983-10-20 第一精工株式会社 調圧弁
JPS60180875U (ja) * 1984-05-11 1985-11-30 日産自動車株式会社 チエツクバルブ
JPH01220784A (ja) * 1988-02-25 1989-09-04 Nippon Valqua Ind Ltd バルブ
JPH03107679A (ja) * 1989-09-20 1991-05-08 Daikin Ind Ltd 開閉弁

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017196295A1 (fr) * 2016-05-09 2017-11-16 Cummins Inc. Piston régulateur de pression à clapet anti-retour intégré
WO2018029206A1 (fr) * 2016-08-09 2018-02-15 Minimax Gmbh & Co. Kg Système de commande pour une installation d'extinction d'incendie et dispositif de sécurité
US11376455B2 (en) 2016-08-09 2022-07-05 Minimax Gmbh Control system for a fire-extinguishing installation, and safety device
KR20190078289A (ko) * 2017-12-26 2019-07-04 주식회사대성엘텍 방향 용기용 밸브 조립체
KR102011973B1 (ko) * 2017-12-26 2019-08-19 주식회사 대성엘텍 방향 용기용 밸브 조립체
CN111795188A (zh) * 2019-04-03 2020-10-20 株式会社不二工机 阀装置
CN111795188B (zh) * 2019-04-03 2024-02-20 株式会社不二工机 阀装置
CN111624373A (zh) * 2020-07-01 2020-09-04 强一半导体（苏州）有限公司 功率器件测试探针卡用磁力式泄压结构及其安装标定方法

Also Published As

Publication number Publication date
AU2002328614A1 (en) 2004-03-03
JPWO2004016974A1 (ja) 2005-12-02

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