WO2005033567A1 - 流体遮断器及び流体供給システム - Google Patents
流体遮断器及び流体供給システム Download PDFInfo
- Publication number
- WO2005033567A1 WO2005033567A1 PCT/JP2004/014520 JP2004014520W WO2005033567A1 WO 2005033567 A1 WO2005033567 A1 WO 2005033567A1 JP 2004014520 W JP2004014520 W JP 2004014520W WO 2005033567 A1 WO2005033567 A1 WO 2005033567A1
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- WO
- WIPO (PCT)
- Prior art keywords
- fluid
- closing
- flow path
- valve
- opening
- Prior art date
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Classifications
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- 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
- F16K17/36—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position
- F16K17/366—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position the closure member being a movable ball
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C4/00—Flame traps allowing passage of gas but not of flame or explosion wave
- A62C4/02—Flame traps allowing passage of gas but not of flame or explosion wave in gas-pipes
Definitions
- the present invention relates to a fluid circuit breaker and a fluid supply system, and more particularly, to a fluid circuit breaker having a simple and inexpensive structure that can surely shut off supply of a fluid in an emergency and can be easily handled and obtained. And a fluid supply system using the same.
- a manual high-pressure shut-off valve 8A is provided in the middle of a pipe 7A connected to a gas container, and an operator operates the high-pressure shut-off valve 8A. It is known that the gas supply can be operated to shut off the gas supply. In the figure, 9 A indicates a pressure reducing valve.
- an emergency for example, an earthquake, a fire, an abnormality in the device, etc.
- Patent Document 1 since the pressure-driven valve is disposed in the middle of the pipe connected to the mouth of the gas container, the gas container falls down due to an earthquake or an externally attached gas, and the gas container and the pressure-driven valve are connected to each other. If a gas leak occurs in the middle of the pipe during the period, even if the pressure-driven valve is shut off, the pipe upstream of the pressure-driven valve will be damaged, and the gas blown out from the damaged part cannot be stopped. Therefore, at the present time, a realistic gas shut-off system has been constructed in an emergency, especially in consideration of earthquake countermeasures.
- Patent Document 1 Japanese Patent Application Laid-Open No. 10-118205
- the present invention has been made in view of the above circumstances, and a fluid circuit breaker having a simple and inexpensive structure that can reliably shut off fluid supply in an emergency and can be easily handled, and using the fluid circuit breaker. It is an object to provide a fluid supply system. It is another object of the present invention to provide a fluid supply system that can reliably prevent fluid leakage downstream of the mouth of a fluid container in an emergency.
- the present invention is as follows.
- An apparatus main body an abnormality detecting means provided in the apparatus main body and detecting an abnormality, a valve body for opening and closing a fluid flow path formed in the apparatus main body, and opening the valve body with the fluid flow path And a valve drive means for displacing the valve body to a position for closing the fluid flow path when an abnormality is detected by the abnormality detection means.
- the valve body driving means is movably provided in a pressure chamber formed in the device main body and is connected to the valve body, a piston member, and the upstream side of the pressure chamber and the fluid flow path. And / or a discharge path opening / closing means for opening / closing a communication path for opening / closing a communication path communicating with the pressure chamber, and a discharge path opening / closing means for opening / closing a discharge path for discharging a fluid sealed in the pressure chamber connected to the pressure chamber.
- the fluid circuit breaker according to 2.
- the apparatus further comprises a closing detection means provided on the device main body and detecting closing of the fluid flow path by the valve body, and opening and closing the communication path when the closing detection means detects the closing of the fluid flow path. 3. or 4 above, in which the connection is closed by means
- a fluid circuit breaker according to item. 6.
- Valve driving means for displacing the valve body to a position for closing the fluid flow path when an abnormality is detected by the means; and detecting closing of the fluid flow path by the valve body provided in the device body.
- the valve body driving means is provided movably in a pressure chamber formed in the device main body, and communicates a piston member connected to the valve body with the pressure chamber and an upstream side of the fluid flow path.
- Communication path opening / closing means for opening / closing a communication path
- discharge path opening / closing means for opening / closing a discharge path connecting the pressure chamber and a downstream side of the fluid flow path,
- the communication path is opened by the communication path opening / closing means, and the fluid flowing on the upstream side of the fluid flow path through the communication path is introduced into the pressure chamber. And closing the fluid flow path with the valve element by displacing the piston member and the valve element, and when the closing of the fluid flow path is detected by the close detection means, the communication path opening / closing means.
- the communication path is closed, and from the state where the communication path and the discharge path force S are closed, the discharge path is opened by the discharge path opening / closing means, and the fluid sealed in the pressure chamber through the discharge path is released.
- a fluid circuit breaker wherein the fluid is discharged to a downstream side of the fluid flow path.
- the valve body driving means is provided in a storage chamber formed in the device main body, and is provided with an urging means connected to the valve body, and a direction in which the fluid passage is closed by the urging means.
- the fluid circuit breaker according to the above 1 or 2 further comprising: a holding release mechanism capable of holding the biased valve body at a position where the fluid flow path is opened and releasing the holding.
- the valve body driving means is movably provided in a pressure chamber formed in the device main body and is connected to the valve body, and a piston member is connected to the pressure chamber and supplies fluid to the pressure chamber.
- Path opening / closing means for opening and closing a supply path for discharge
- discharge path opening / closing means for opening / closing a discharge path connected to the pressure chamber for discharging a fluid sealed in the pressure chamber 3.
- the abnormality detecting means is a receiving portion provided in the device main body, and a vibration detecting mechanism that is a falling member force that can be received by the receiving portion and fall by the vibration.
- the fluid circuit breaker according to any one of the above.
- the abnormality detection means is provided on the device main body, and a vibration detection mechanism that is a fall member force that is put into the reception portion and that can be dropped by the vibration and the receiving portion force is provided on the device main body; 9.
- the fluid circuit breaker according to any one of 1. to 8. above, further comprising: a vibration sensor for detecting vibration.
- the fluid circuit breaker according to any one of the above 1 to 11, further comprising an abnormality notifying unit provided on the device main body and notifying an abnormality detected by the abnormality detecting unit.
- Body supply system
- a fluid container a drive valve attached to an opening of the fluid container and opening and closing the fluid flow path by a fluid supplied, a fluid supply source for supplying fluid to the drive valve, And a control means for controlling the driving of the fluid supply source so as to open the fluid flow path of the drive valve when an abnormality is detected by the abnormality detecting means.
- a fluid supply system characterized by the above-mentioned.
- the valve element is held at the position where the fluid path is opened by the valve element driving means and the fluid is supplied by the valve element driving means, while in an emergency, the valve element is driven by the valve element driving means.
- the body is displaced to a position that closes the fluid flow path, and the fluid supply is reliably shut off.
- the valve body, abnormality detection means, and valve body drive means are integrated into the equipment body, so it is easy to handle! A simple and inexpensive fluid circuit breaker can be provided.
- an attachment provided on the device body and detachably attached to an opening of the fluid container.
- the attachment portion is further provided, it is possible to prevent fluid leakage downstream of the mouth of the fluid container.
- the valve body driving means has a piston member, a communication path opening / closing means, and a discharge path opening / closing means, the valve body is displaced by guiding the fluid flowing through the fluid flow path into the pressure chamber. Open and close the fluid flow path.
- the discharge path communicates the pressure chamber with the downstream side of the fluid flow path
- the fluid sealed in the pressure chamber can be discharged to the downstream side of the fluid flow path, and the fluid is discharged to the outside air. Discharge can be prevented.
- the apparatus further comprises a closing detection means, and when the closing of the fluid flow path is detected by the closing detection means, the communication path is closed by the communication path opening / closing means.
- a rise in the internal pressure of the pressure chamber can be suppressed, and the safety of the structure of the pressure chamber can be improved.
- the valve element driving means normally supplies the fluid while the valve element is held at a position where the fluid flow path is opened, and in an emergency, the valve element driving means supplies the fluid.
- the valve body is displaced to a position that closes the fluid flow path, and the fluid supply is reliably shut off.
- the valve body, the abnormality detecting means, and the valve body driving means are integrally provided in the apparatus main body, a fluid circuit breaker having a simple and inexpensive structure which can be easily handled can be provided.
- an attaching portion detachably attached to the opening of the fluid container it is possible to prevent fluid leakage downstream of the opening of the fluid container.
- the valve element driving means has a piston member, a communication path opening / closing means, and a discharge path opening / closing means
- the communication path opening / closing means closes the communication path from the state where the communication path and the discharge path are closed.
- the fluid flowing on the upstream side of the fluid flow path is supplied to the pressure chamber through the communication path, and the piston member and the valve element are displaced to close the fluid flow path with the valve element.
- the discharge path is opened by the discharge path opening / closing means, and the fluid sealed in the pressure chamber is discharged to the downstream side of the fluid flow path via the discharge path.
- the fluid flow path can be more reliably and quickly closed, and the closed state of the fluid flow path can be easily released. Further, the fluid sealed in the pressure chamber can be discharged to the downstream side of the fluid flow path, and the discharge of the fluid to the outside can be prevented. Further, a closing detection means is provided, and when the closing of the fluid flow path is detected by the closing detection means, the communication path is closed by the communication path opening / closing means. As a result, it is possible to suppress a rise in the internal pressure of the pressure chamber when closing the fluid flow passage, and to improve the safety of the structure of the pressure chamber.
- valve element driving means has a biasing means and a holding release mechanism
- the valve element can be mechanically displaced to open and close the fluid flow path more reliably.
- valve element driving means has a piston member, a supply path opening / closing means, and a discharge path opening / closing means
- the fluid flow path is opened by the fluid pressure supplied and sealed in the pressure chamber.
- the fluid passage is closed by discharging the sealed fluid of the pressure chamber force.
- the abnormality detecting means is placed in the receiving portion provided in the device main body, and the receiving portion force is dropped by the receiving portion and vibrated. In the case of a vibration detection mechanism with a drop member force that can be applied, a simpler and less expensive structure can be achieved.
- the abnormality detecting means is a seismic sensor provided in the device main body and detecting vibration, it is possible to prevent a malfunction related to fluid shutoff.
- the abnormality detecting means has a vibration detecting mechanism and a seismic sensor, it is possible to more reliably prevent a malfunction related to fluid interruption.
- an abnormal state can be notified to the outside.
- the fluid in the fluid circuit breaker, the fluid is supplied while the valve body is held at the position where the fluid body is opened by the valve body driving means in the normal state, while the valve is operated in the emergency in the emergency.
- the body driving means By the body driving means, the valve body is displaced to a position for closing the fluid flow path, and the fluid supply is reliably shut off.
- the fluid supply source is controlled by the control means in a normal state, and the fluid flow path of the drive valve is opened to supply the fluid.
- the fluid supply is performed by the control means.
- the source is controlled to close the drive valve fluid flow path and shut off the fluid supply. Therefore, it is possible to reliably prevent fluid leakage downstream of the mouth of the fluid container.
- FIG. 1 is an explanatory diagram illustrating a gas supply system according to a first embodiment.
- FIG. 2 is a block diagram for explaining the gas supply system.
- FIG. 3 is a longitudinal sectional view of a gas circuit breaker (showing a gas supply state).
- FIG. 4 is a vertical cross-sectional view of the gas circuit breaker (showing a gas cut-off state).
- FIG. 5 is a schematic diagram for explaining a communication path opening / closing means and a discharge path opening / closing means.
- FIG. 6 is an explanatory diagram for explaining an operation of attaching a gas circuit breaker to a gas cylinder.
- FIG. 7 is an explanatory diagram for explaining an operation of attaching a gas circuit breaker to a gas cylinder.
- FIG. 8 is a longitudinal sectional view of a gas circuit breaker according to another embodiment (showing a gas supply state).
- FIG. 9 is a longitudinal sectional view of a gas circuit breaker according to another embodiment (showing a gas cutoff state).
- FIG. 10 is a longitudinal sectional view of a gas circuit breaker according to still another embodiment (showing a gas supply state).
- FIG. 11 is a longitudinal sectional view of a gas circuit breaker according to still another embodiment (showing a gas cutoff state).
- FIG. 12 is an explanatory diagram illustrating a gas supply system according to a second embodiment.
- FIG. 13 is a block diagram illustrating a gas supply system according to a second embodiment.
- FIG. 14 is a schematic diagram for explaining another mode of the abnormality detection means.
- FIG. 15 is a schematic diagram for explaining still another embodiment of the abnormality detection means.
- FIG. 16 is an explanatory diagram for explaining a conventional gas supply system.
- FIG. 17 is a block diagram for explaining a conventional gas supply system.
- the fluid supply system includes a fluid container and a fluid circuit breaker described below (see FIGS. 1 and 2).
- the “fluid container” is not particularly limited in its shape, size, material, etc., as long as it can store a fluid. Absent.
- This fluid container usually has a container main body and a manual operation valve attached to an opening of the container main body.
- the types of fluids (especially gases) stored in the fluid container include, for example, flammable gases (eg, propane gas, natural gas, acetylene, hydrogen gas, etc.) and toxic gases (eg, fluorine, Chlorine, salted hydrogen, etc.), flammable toxic gas (eg, monosilane, sidylane, diborane, etc.), and flammable gas (eg, compressed oxygen, liquefied oxygen, oxygenated nitrogen gas, etc.).
- the fluid container may be, for example, a container for storing fuel for a fuel cell (for example, hydrogen, natural gas, propane gas, methanol, and the like).
- the “fluid circuit breaker” includes a device main body, an abnormality detecting unit, a valve body, and a valve body driving unit described below.
- the fluid circuit breaker can include, for example, an attachment portion and an attachment portion described below. Further, the fluid circuit breaker can include, for example, an abnormality notification unit described later.
- the fluid circuit breaker when the fluid circuit breaker is attached to the opening of the fluid container, it does not come into contact with the ground (floor surface) even if the fluid container falls down! It preferably has a shape.
- the fluid circuit breaker can be attached, for example, to the mouth of the fluid container, or can be attached to the middle of a pipe connected to the fluid container.
- the structure, shape, size, and the like of the "device main body” are not particularly limited.
- a fluid flow path to which the fluid in the fluid container is supplied is formed in the device body.
- a pressure chamber, a communication path, and a discharge path, which will be described later, can be formed in the device body.
- a storage room described later can be formed in the device main body, for example.
- a pressure chamber, a supply path, and a discharge path described below can be formed in the device main body.
- the device main body can have, for example, an explosion-proof structure in which the above-described rooms and paths are air-tightly sealed.
- the "abnormality detection means” is not particularly limited in its detection form, timing, etc., as long as it is provided in the device main body and can detect various types of abnormalities.
- the types of abnormalities include, for example, earthquakes, fires, gas leaks, malfunctions of gas appliances, falling or swinging of fluid containers (cylinders, etc.).
- the abnormality detecting means includes, for example, (1) a receiving portion provided in the device main body, and a drop member which is put into the receiving portion and which can fall by the receiving portion force by vibration. (2) a form of a vibration sensor provided in the device body and detecting vibration, (3) a form having the vibration detection mechanism and the vibration sensor, and the like. .
- the seismic sensor includes, for example, a sensor unit, a control unit that appropriately outputs a control signal based on a detection signal input from the sensor unit, a battery for driving the sensor unit and the control unit, and the like. Power supply.
- this seismic sensor can be capable of detecting vibration according to, for example, the number of times of vibration, the magnitude, and the type (rolling, pitching, etc.). As a result, for example, it is possible to prevent the seismic sensor from being activated by a single shake, and when a predetermined fluid container is replaced in a facility having a plurality of fluid containers, an adjacent fluid container may be erroneously replaced.
- the shape, size, material, and the like of the “receiving portion” are not particularly limited.
- the receiving portion may be, for example, an inverted dish into which a dropping member is inserted and from which the dropping member can drop when vibrated.
- the receiving portion may have, for example, a receiving hole into which the falling member is inserted and from which the falling member can come off when vibrated.
- the shape, size, material, and the like of the “falling member” are not particularly limited.
- valve element is not particularly limited in its shape, size, material, etc., as long as it can open and close the fluid flow path formed in the device main body.
- valve element driving means holds the valve element at a position where the fluid flow path is opened, and closes the valve element when the abnormality detection means detects an abnormality.
- the structure, drive form, etc. are not particularly limited as long as the displacement can be made.
- this valve driving means for example, the following (1)-(3) modes described below can be cited.
- a piston member movably provided in a pressure chamber formed in the device main body and connected to the valve body, and a communication for opening and closing a communication path connecting the pressure chamber and the upstream side of the fluid flow path.
- a mode including a path opening / closing means and a discharge path opening / closing means connected to the pressure chamber and opening / closing a discharge path for discharging a fluid sealed in the pressure chamber (see FIGS. 3 and 4).
- the valve body in a state where the communication path and the discharge path are closed, The valve body is held at a position that opens the fluid flow path by the urging force of the step or the like.
- the communication path is opened by the communication path opening / closing means, and the pressure of the fluid supplied into the pressure chamber on the upstream side of the fluid flow path through the communication path.
- the piston member is displaced to displace the valve body to the position where the fluid flow path is closed, and further, the discharge path is opened by the discharge path opening / closing means from the state where the communication path and the discharge path are closed.
- the fluid may be configured to be discharged from the pressure chamber via the pressure chamber.
- the fluid flow path When the fluid flow path is closed using the supply fluid in this manner, the pressure of the fluid flow path and the driving pressure of the biston member are the same, so the size and number of piston members are minimized. Therefore, the structure for closing the fluid flow path can be reduced in size and simplified.
- the fluid flow path may be formed in a linear shape, and the piston member and the valve body may be configured to be displaced in a direction substantially orthogonal to the fluid flow path. Thereby, the fluid flow path can be more reliably and quickly closed.
- the type, arrangement location, number, and the like of the above-mentioned communication path opening / closing means are not particularly limited.
- Examples of the communication path opening / closing means include: (a) an operation valve having an operation member connected to a falling member constituting the vibration detection mechanism via a connection member (eg, a string, a chain, or the like); (B) a form in which the solenoid valve is electrically connected to the seismic sensor, (c) a form in which the operation valve and the solenoid valve are provided in series, and the like.
- discharge path opening / closing means There is no particular limitation on the type, location, number, etc. of the discharge path opening / closing means.
- the discharge path opening / closing means include an operation valve having an operation member, a solenoid valve, a check valve, and the like.
- the discharge path communicates the pressure chamber with the downstream side of the fluid flow path.
- the fluid supplied to the pressure chamber can be discharged to the fluid flow path, and even if the used fluid is a flammable gas or a toxic gas, the gas can be prevented from being discharged to the outside air (atmosphere).
- the apparatus further comprises a closing detection means provided in the device main body and for detecting closing of the fluid flow path by the valve body, wherein the communication is performed when the closing of the fluid flow path is detected by the closing detection means.
- the road opening / closing means is configured to close the communication path.
- This closing detection means is, for example, a valve element and a Z or piston member. It may be a sensor for detecting a position (for example, a proximity sensor, a limit switch, or the like), or a pressure sensor for detecting the internal pressure of the pressure chamber and the Z or the fluid flow path.
- the communication path opening / closing means for example, (a) an operation valve having an operation member connected to a falling member constituting the vibration detection mechanism via a connection member (for example, a string, a chain, or the like); (B) an electromagnetic valve electrically connected to the close detection means and the seismic sensor, and (c) an electromagnetic valve electrically connected to the close detection means. and (b) in combination.
- upstream side (downstream side) of the fluid flow path means an upstream side (downstream side) of a portion of the fluid flow path that is opened and closed by the valve element.
- a biasing means provided in a storage chamber formed in the main body of the device and connected to the valve body, and a valve body biased in a direction to close the fluid flow path by the biasing means through the fluid flow
- a holding release mechanism for holding the road at a position where the road is opened and releasing the holding (see FIGS. 8 and 9).
- the holding release mechanism includes, for example, an operation lever connected to the urging means and operable from the outside of the device main body, and an engagement / disengagement tool detachable from the operation lever.
- the fluid passage can be configured to be opened and closed by engaging and disengaging the operating lever and the engaging and disengaging device.
- the engaging and disengaging tool include: (a) a form that is connected to a falling member constituting the vibration detection mechanism via a connecting member (for example, a string, a chain, or the like); And (c) a form linked to the dropping member and the solenoid valve.
- biasing means include an elastic member such as rubber and panel, a buffer mechanism and the like.
- the fluid flow path may be formed in a linear shape, and the valve body may be configured to be displaced in a direction substantially orthogonal to the fluid flow path. Thereby, the fluid flow path can be more reliably and quickly closed.
- a piston member movably provided in a pressure chamber formed in the device main body and connected to the valve body, and a piston member connected to the pressure chamber and for supplying a fluid (eg, air or the like) to the pressure chamber.
- a configuration including supply path opening / closing means for opening and closing the supply path, and discharge path opening / closing means connected to the pressure chamber and opening / closing a discharge path for discharging the fluid sealed in the pressure chamber (FIGS. 10 and 1)
- the supply path is opened by the supply path opening / closing means from the state where the supply path and the discharge path are closed, and the piston member is displaced by the fluid pressure supplied to the pressure chamber through the supply path.
- the valve body is displaced to the position where the fluid flow path is opened, and the valve body is moved to the position where the fluid flow path is opened by the fluid pressure sealed in the pressure chamber with the supply path and the discharge path closed.
- the discharge path is opened by the discharge path opening / closing means from the state where the supply path and the discharge path are closed, and the sealed fluid is discharged from the pressure chamber through the discharge path.
- the fluid flow path may be formed in a straight line, and the piston member and the valve may be displaced in a direction substantially orthogonal to the fluid flow path. Thereby, the fluid flow path can be more reliably and quickly closed.
- the discharge path opening / closing means may be, for example, (a) an operation valve having an operation member connected to a falling member constituting the vibration detection mechanism via a connection member (for example, a string, a chain, or the like); (B) a form in which the solenoid valve is electrically connected to the seismic sensor, (c) a form in which the operation valve and the solenoid valve are provided in series, and the like.
- the type, location and number of the supply path opening / closing means are not particularly limited.
- Examples of the supply path opening / closing means include a check valve, an operation valve having an operation member, and a solenoid valve.
- valve body driving means of the above-mentioned (1)-(3) form can have, for example, valve body urging means for urging the valve body in a direction to open the fluid flow path.
- valve body urging means for example, those having the same configuration as the above urging means can be mentioned.
- the structure and installation form of the “attachment portion” are not particularly limited as long as it is provided on the device main body and can be detachably attached to the mouth of the fluid container.
- This attachment portion may have, for example, a screw portion that can be unthreaded at the mouth of the fluid container.
- the “mouth” may be, for example, an opening of a fluid container, a nozzle of a manually operated valve attached to the opening of the fluid container, or the like.
- the “attached portion” is provided on the device body and detachably attached to one end of the pipe.
- the structure, installation form, etc. are not particularly limited as long as they can be worn.
- the attached portion can have, for example, a screw portion that can be unthreaded at one end of the pipe.
- the one end of the pipe may be, for example, an opening at one end of the pipe, a connecting portion attached to the opening at one end of the pipe, or the like.
- the fluid supply system includes a fluid container, a drive valve, a fluid supply source, an abnormality detection unit, and a control unit described below (see FIGS. 12 and 13).
- fluid container examples include those having the same configuration as the fluid container described in the first embodiment.
- the structure and arrangement of the "drive valve” are not particularly limited as long as it is attached to the mouth of the fluid container and can open and close the fluid flow path with the supply fluid.
- This drive valve is, for example, a normally closed type that closes its fluid flow path in the absence of driving fluid pressure, or a normally open type that opens its fluid flow path in the absence of drive fluid pressure. It can be.
- the structure and arrangement of the “fluid supply source” are not particularly limited as long as the fluid can be supplied to the drive valve.
- the fluid supply source include an air compressor and a fluid-filled container (such as a gas-filled cylinder).
- abnormality detection means examples include those having the same configuration as the abnormality detection means described in the first embodiment.
- control means are not particularly limited, as long as the fluid supply source can be drive-controlled so as to open the fluid flow path of the drive valve when the abnormality is detected by the abnormality detection means. Absent.
- the gas supply system 1 includes a gas cylinder 2 (as shown in FIGS. 1 and 2). This is exemplified as the “fluid container” according to the present invention. ) And a gas circuit breaker 3.
- the gas cylinder 2 is placed on the floor in a state where the gas cylinder 2 is surrounded by a fall prevention chain member 6 attached to the support frame member 5.
- the gas cylinder 2 has a cylinder main body 2a in which a predetermined gas is stored, and a manual operation valve 2b attached to an opening of the cylinder main body 2a.
- a pipe 7 is connected to the operation valve 2b via the gas circuit breaker 3.
- a stretchable spiral part 7a is provided in the middle of the pipe 7.
- a manual operation valve 8 also referred to as a high-pressure shut-off valve
- a pressure reducing valve 9 are sequentially disposed downstream of the spiral part 7a.
- a gas device (not shown) is connected to the other end of the pipe 7 as needed.
- the gas circuit breaker 3 includes a device main body 11, a vibration detection mechanism 12 (exemplified as “abnormality detection means” according to the present invention), a valve 13 and a valve drive. It has 14.
- the device main body 11 includes an upper main body 11a in which a pressure chamber 16 is formed, and a lower main body lib in which a gas flow path 17 is formed.
- the lower main body lib is provided with a cylindrical attachment member 18 at a position connected to one end of the gas flow path 17.
- the female screw 18a formed on the inner peripheral surface of the attachment member 18 is formed on the outer peripheral surface of a cylindrical nozzle portion 19 (exemplified as the "port" according to the present invention) of the operation valve 8.
- the lower main body lib is provided with a columnar attached member 20 at a position connected to the other end of the gas flow path 17 (see FIGS. 6 and 7).
- the attached member 20 has an external thread 20a formed on the outer peripheral surface thereof, and a communication path 2 Ob connected to the gas flow path 17 at the center thereof.
- the male screw 20a of the attached member 20 is screwed into a female screw (not shown) formed on the inner peripheral surface of the cylindrical connecting member 21 connected to one end of the pipe 7. (See Figures 6 and 7).
- the upper main body 11a and the lower main body lib are formed with a communication path 23 for connecting the upstream side of the gas flow path 17 with the pressure chamber 16.
- the upper main body 11a and the lower main body lib are formed with a discharge passage 24 that connects the downstream side of the gas flow path 17 with the pressure chamber 16.
- the vibration detection mechanism 12 includes a receiving member 26 having an L-shaped cross section attached to the bottom surface of the lower main body lib, and a sphere that can enter a receiving hole 26 a formed in a horizontal surface of the receiving member 26. 2 and 7.
- the sphere 27 fitted into the receiving hole 26a When the circuit breaker 3 vibrates (inclines), it comes off from the receiving hole 26a and falls from the receiving member 26.
- One end of a string-shaped connecting member 28 is attached to the sphere 27.
- the valve body 13 is provided so as to be displaceable between a position where the gas flow path 17 is opened and a position where the gas flow path 17 is closed.
- the valve element 13 is urged by a panel 29 (exemplified as “valve element urging means” according to the present invention) in a state in which the gas flow path 17 is opened in a state where the gas flow path 17 is closed. I have.
- the valve element driving means 14 includes a piston member 31, an operating valve 33 (exemplified as “communication path opening / closing means” according to the present invention), and an operating valve 34 ("discharge path opening / closing means” according to the present invention).
- a plurality of (three in the figure) piston members 31 are set in a disk shape, and are provided to be vertically movable within the pressure chamber 16.
- Each piston member 31 is connected to the valve 13 via a piston rod 32.
- the operation valve 33 is provided in the middle of the communication path 23 as shown in FIG.
- One end of the connecting member 28 is connected to the operating member 33a of the operating valve 33.
- the operating valve 33 closes the communication path 23, and when the sphere 27 falls from the receiving member 26, the operating valve 33 a Is pulled downward to open the communication path 23. Further, as shown in FIG. 5 (b), the operation valve 34 is disposed in the middle of the discharge path 24, and normally closes the discharge path 24, so that the operation member 34a can be manually operated. As a result, the discharge passage 24 is opened.
- the operation of the gas supply system 1 having the above configuration will be described.
- the mounting member 18 of the gas circuit breaker 3 is screwed into the nozzle portion 19 of the operation valve 2b of the gas cylinder 2, and
- the connecting member 21 provided at one end of the pipe 7 is screwed to the attached member 20 of 3.
- a sphere 27 is inserted into the receiving hole 26 a of the receiving member 26, and the communication path 23 is closed by the operation valve 33. Further, the discharge path 24 is closed by the operation valve 34.
- the piston member 31 and the valve body 13 are positioned at the upper position by the urging force of the panel 29, and the gas passage 17 is opened. Therefore, from this state, if the operator opens the operation valve 2b of the gas cylinder 2, the inside of the gas cylinder 2 is opened.
- the gas stored in the gas flows into the pipe 7 through the operation valve 2b and the gas circuit breaker 3, and is further supplied to the gas equipment through the operation valve 8 and the pressure reducing valve 9 in the middle of the pipe 7.
- the gas circuit breaker 3 of the first embodiment is configured so that the gas flow path 17 can be opened and closed by the valve body driving means 14, so that the gas supply can be automatically and quickly shut off.
- the vibration detecting mechanism 12, the valve body 13, and the valve body driving means 14 are integrally provided in the device main body 11 of the gas circuit breaker 3, the vibration detecting means, the gas breaking means (Pressure-driven valve), pressure drive source, and control device can be provided with a gas supply system that can be configured extremely simply and simply and that does not require cumbersome construction work as compared with a system in which the system is separately provided. .
- the attachment member 18 that can be screwed and released with the nozzle member 19 of the operation valve 2b of the gas cylinder 2 is provided on the device main body 11 of the gas circuit breaker 3, Even so, gas leakage downstream from the mouth of the gas cylinder 2 can be reliably prevented.
- the valve body driving means 14 includes the piston member 31, the operation valve 33, and the operation valve 34, the gas flowing through the gas passage 17 is guided into the pressure chamber 16.
- the gas passage 17 can be opened and closed by displacing the piston member 31 and the valve body 13.
- the size of the piston member 31 and the number of piston members 31 are reduced because the pressure of the gas flow path 17 and the driving pressure of the biston member 31 are the same. It can be set to the minimum necessary, and the structure for closing the gas flow path 17 can be reduced in size and simplified.
- the discharge path 24 is connected so that the pressure chamber 16 communicates with the downstream side of the gas flow path 17. The gas enclosed in the pressure chamber 16 can be discharged to the downstream side of the gas flow path 16, and even if the gas to be used is a gas such as flammable or toxic gas, ) Can be prevented.
- the vibration detecting mechanism 12 having the receiving member 26 and the sphere 27 that is put into the receiving member 26 so as to fall with a predetermined vibration is employed, the gas circuit breaker 3
- the entire system 1 can have a simpler and cheaper structure.
- the gas circuit breaker 40 has a device main body 41, a vibration detection mechanism 12, a valve 13 and a valve drive 42.
- the device main body 41 includes an upper main body 41a in which a storage room 43 is formed, and a lower main body 41b in which the gas passage 17 is formed.
- the lower body 4 lb is provided with an attaching member 18 and an attached member 20 at positions connected to the gas passage 17.
- the valve body driving means 42 has a panel 45 (exemplified as “biasing means” according to the present invention) provided in the storage chamber 43 and a holding release mechanism 46.
- the panel 45 urges the valve 13 in a direction to close the gas passage 17.
- the holding release mechanism 46 has an operation lever 47 swingably supported by the upper main body 41a. One end of the operation lever 47 protrudes outward from the notch portion 48 of the upper main body 41a, so that the operation lever 47 can be operated from outside by the outside. The other end of this operating lever 47 and the valve 1
- the upper end of the piston rod 32 connected to 3 is connected by the panel 45.
- the upper body 41a is provided with an engaging / disengaging tool 49 that can be engaged and disengaged with the other end of the operation lever 47.
- the engagement / disengagement tool 49 includes a first stop member 49a having an L-shaped cross section that is detachable and elastically deformable at the other end side of the operation lever 47, and is capable of being disengaged from the first stop member 49a and has an upper portion. And a rod-shaped second stopper member 49b supported by the main body 41a to be vertically movable. One end of the connecting member 28 of the vibration detecting mechanism 12 is connected to the lower end of the second stopper 49b.
- the first stop member 49a, the second stop member 49b, and the operation lever in a state where the sphere 27 is placed in the receiving member 26 constituting the vibration detection mechanism 12.
- the valve 13 urged by the panel 45 can be held at a position where the gas passage 17 is opened (see FIG. 8).
- the gas cylinder 2 tilts (or swings) due to the occurrence of an earthquake or the like, the sphere 27 falls from the receiving member 26, and the second stopper member 49b is directed downward through the connecting member 28 connected to the sphere 27. And the second stop member 49b and the first stop member 49a are released from engagement.
- the configurations of the holding release mechanism 46 and the engagement / disengagement tool 49 are not particularly limited, and a suitable mechanism or structure can be appropriately employed.
- the holding release mechanism 46 can include a ratchet mechanism (not shown) that functions when the operation lever 47 is engaged with the engagement / disengagement tool 49.
- the gas circuit breaker 50 has a device main body 51, a vibration detection mechanism 12, a valve 13 and a valve drive 52.
- the device main body 51 includes an upper main body 51a in which a pressure chamber 53 is formed, and a lower main body 51b in which a gas flow path 17 is formed.
- the lower body 5 lb has a mounting member 18 and a mounting part Material 20 is provided. Further, a supply path 55 and a discharge path 56 for communicating the pressure chamber 53 with the outside air are formed in the upper main body 51a.
- the valve body driving means 52 includes a piston member 31, a check valve 57 (exemplified as “supply path opening / closing means” according to the present invention), and an operation valve 58 (example as “discharge path opening / closing means” according to the present invention). Shown).
- the check valve 57 is provided in the middle of the supply path 55.
- the operation valve 58 is disposed in the middle of the discharge path 56.
- the operation member 58a of the operation valve 58 is connected to a sphere 27 constituting the vibration detection mechanism 12 via a connection member 28 (see FIG. 5 (a); The direction is reversed.) O
- a fluid supply means such as an air compressor is used.
- the fluid is supplied into the pressure chamber 53 through the supply path 55 and the check valve 57 and is sealed. Then, due to the fluid pressure in the pressure chamber 53, the piston member 31 and the valve body 13 are displaced to the upper position, and the gas passage 17 is opened (see FIG. 10).
- the gas flow path 17 is opened by the fluid pressure pre-sealed in the pressure chamber 53, so that the pressure supply source force always supplies fluid as in the related art. In comparison, the structure is simpler and cheaper.
- the gas supply system 60 As shown in FIGS. 12 and 13, the gas supply system 60 according to the second embodiment 2, drive valve 61, compressor 62 (exemplified as “fluid supply source” according to the present invention), vibration sensor 63 (exemplified as “abnormality detecting means” according to the present invention), and control means 64. It is provided with.
- the drive valve 61 is configured to open its gas flow path by supplying a fluid from the compressor 62 and close the gas flow path by stopping the supply of the fluid from the compressor 62. Further, the drive valve 61 has an attachment member 18 and an attachment member 20. The attachment member 18 of the drive valve 61 is screwed to the nozzle 19 of the operation valve 2b constituting the gas cylinder 2.
- the connecting member 21 provided at one end of the pipe 7 is connected to the attached member 20 of the drive valve 61. Further, the control means 64 is configured to output a drive-stop command or the like to the compressor 62 based on a detection signal of the seismic sensor 63.
- the compressor 62 is driven and controlled by the control means 64, and the compressed air supplied from the compressor 62 opens the gas passage of the drive valve 61. From this state, when the operator opens the operation valve 2b of the gas cylinder 2, the gas stored in the gas cylinder 2 flows to the pipe 7 through the operation valve 2b and the gas circuit breaker 3, and further to the pipe 7 The gas will be supplied to the gas equipment through the operating valve 8 and the pressure reducing valve 9 on the way.
- the detection signal of the seismic sensor 63 is input to the control means 64, and the compressor 62 is stopped by the control means 64, and the supply of the compressed air from the compressor 62 is stopped.
- the gas flow path of the drive valve 61 is closed, and the gas supply is cut off.
- gas leakage downstream of the mouth of the gas cylinder 2 can be reliably prevented.
- the vibration detecting mechanism 12 is exemplified as the abnormality detecting means according to the present invention.
- the present invention is not limited to this.
- the abnormality detecting means may be constituted by a seismic sensor. If this seismic sensor is not activated by one shaking, it is possible to prevent the operator from erroneously operating the gas circuit breaker when the operator accidentally tilts the gas container.
- Circuit breaker 3 can be configured by electrically connecting electromagnetic valve 67 and seismic sensor 66 provided in the middle of communication path 23.
- the gas circuit breaker 50 can be configured by electrically connecting an electromagnetic valve 67 provided in the middle of the discharge path 56 and the seismic sensor 66. Further, the gas circuit breaker 40 can be configured such that the holding release mechanism 42 (see FIG. 8) can be driven by an electromagnetic valve, and the electromagnetic valve and the seismic sensor are electrically connected.
- the gas circuit breaker 3 is provided with a solenoid valve 68 and an operation valve 69 in series in the middle of the communication path 23, and the solenoid valve 68 and the seismic sensor 70 are electrically connected. And the operating member 69a of the operating valve 69 and the sphere 27 of the vibration detecting mechanism 12 can be connected to each other via the connecting member 28.
- the gas circuit breaker 50 is provided with a solenoid valve 68 and an operation valve 69 in series in the middle of the discharge path 56, and the solenoid valve 68 and the seismic sensor 70 are electrically connected.
- the operation member 69a and the sphere 27 of the vibration detection mechanism 12 can be connected to each other via the connection member 28.
- the gas circuit breaker 40 has its holding release mechanism 46 (see FIG. 8) driven by an electromagnetic valve and an operation valve, and the electromagnetic valve and the seismic sensor are electrically connected.
- the operation member and the sphere of the vibration detection mechanism can be connected to each other via a connection member.
- the force for attaching the gas circuit breakers 3, 40, 50 to the operation valve 2b constituting the gas cylinder 2 is not limited to this.
- the gas circuit breakers 3, 40, 50 may be directly attached to the opening of the gas cylinder 2. Further, the gas circuit breakers 3, 40, and 50 may be provided in the middle of the pipe 7.
- the gas flow path 17 is opened by not supplying the gas from the gas flow path 17 to the pressure chamber 16 in the normal state, and the gas flow path 17 is opened in the emergency.
- Force configured to close gas passage 17 by supplying gas to pressure chamber 16 is not limited to this.For example, by supplying gas from gas passage 17 to pressure chamber 16 at normal times, The gas flow path 17 is opened and the gas flow By stopping the gas supply from the passage 17 to the pressure chamber 16, the gas passage 17 is closed.
- the discharge path 24 that connects the pressure chamber 16 and the downstream side of the gas flow path 17 is exemplified, but is not limited thereto. It may be used as a discharge channel for communicating
- the operation valve 33 is exemplified as the communication path opening / closing means according to the present invention, but the invention is not limited thereto. And a plug member connected to one end of the connecting member 28.
- the force of displacing the piston member 31 and the valve body 13 by the action of the panel 29 to open the gas flow path 17 is not limited thereto.
- the gas flow path may be opened by displacing the piston member and the valve body and positioning the piston member and the valve body by appropriate positioning means.
- the supply path 55 and the discharge path 56 are provided.
- the present invention is not limited to this.For example, a single supply / discharge path capable of supplying and discharging a fluid is provided. You may.
- the operation valve 58 is exemplified as the discharge path opening / closing means according to the present invention.
- the present invention is not limited to this. It may be constituted by a plug member inserted into the side and connected to one end side of the connecting member 28.
- the check valve 57 is exemplified as the supply path opening / closing means according to the present invention.
- the present invention is not limited thereto. You may comprise by a solenoid valve etc.
- the end of the piston 31 when the gas passage 17 is closed by the valve body can be detected in the pressure chamber 16 as shown by the phantom line in FIG.
- a proximity switch 100 (exemplified as "close detection means” according to the present invention) is provided, and a solenoid valve 101 (electrically connected to the proximity switch 100 according to the present invention) Opening / closing means is exemplified.), And the gas switch 17 is closed by the proximity switch 100.
- the communication path 23 may be closed by the solenoid valve 101 when a signal is detected.
- the seismic sensor 66 and the solenoid valve 67 are provided as described above (see FIG. 14)
- the proximity switch 100 is electrically connected to the solenoid valve 67, and one electromagnetic valve 67 is used to connect the communication path 23. Can be opened and closed.
- a notification lamp and a Z or a notification speaker electrically connected to the seismic sensor as abnormality detection means are provided on the outer surface of the device body. Is also good. As a result, the occurrence of an abnormality can be notified to the outside by turning on the notification lamp or generating sound with the notification speaker.
- the present invention can be suitably applied to the use of a system including a facility provided with a number of gas containers.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
Description
Claims
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JP2005514475A JPWO2005033567A1 (ja) | 2003-10-03 | 2004-10-01 | 流体遮断器及び流体供給システム |
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JP2003-346267 | 2003-10-03 | ||
JP2003346267 | 2003-10-03 |
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WO2005033567A1 true WO2005033567A1 (ja) | 2005-04-14 |
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PCT/JP2004/014520 WO2005033567A1 (ja) | 2003-10-03 | 2004-10-01 | 流体遮断器及び流体供給システム |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112119291A (zh) * | 2018-08-10 | 2020-12-22 | 株式会社富士金 | 流体控制设备、流体控制设备的异常检测方法、异常检测装置以及异常检测系统 |
IT202100031265A1 (it) | 2021-12-14 | 2023-06-14 | One Off Solution S R L | Sistema diagnostico per valvola elettro-attuata e relativo metodo |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55132477U (ja) * | 1979-03-15 | 1980-09-19 | ||
JPS57199752U (ja) * | 1981-06-17 | 1982-12-18 | ||
JPH02271169A (ja) * | 1989-04-11 | 1990-11-06 | Shinko Kinzoku Kogyo Kk | ガス放出防止器 |
-
2004
- 2004-10-01 JP JP2005514475A patent/JPWO2005033567A1/ja active Pending
- 2004-10-01 WO PCT/JP2004/014520 patent/WO2005033567A1/ja active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55132477U (ja) * | 1979-03-15 | 1980-09-19 | ||
JPS57199752U (ja) * | 1981-06-17 | 1982-12-18 | ||
JPH02271169A (ja) * | 1989-04-11 | 1990-11-06 | Shinko Kinzoku Kogyo Kk | ガス放出防止器 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112119291A (zh) * | 2018-08-10 | 2020-12-22 | 株式会社富士金 | 流体控制设备、流体控制设备的异常检测方法、异常检测装置以及异常检测系统 |
IT202100031265A1 (it) | 2021-12-14 | 2023-06-14 | One Off Solution S R L | Sistema diagnostico per valvola elettro-attuata e relativo metodo |
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Publication number | Publication date |
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JPWO2005033567A1 (ja) | 2007-11-15 |
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