CN113063001B - Multifunctional low-pressure integrated valve and control method thereof - Google Patents
Multifunctional low-pressure integrated valve and control method thereof Download PDFInfo
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- CN113063001B CN113063001B CN202110282543.7A CN202110282543A CN113063001B CN 113063001 B CN113063001 B CN 113063001B CN 202110282543 A CN202110282543 A CN 202110282543A CN 113063001 B CN113063001 B CN 113063001B
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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
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/10—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/32—Hydrogen storage
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Abstract
The invention discloses a multifunctional low-pressure integrated valve and a control method thereof, and belongs to the field of gas storage equipment. The integration valve includes: the valve body is provided with at least one first interface, at least one second interface and at least one third interface; the control valve is arranged on the connection points of the second interface, the third interface and the first interface and controls the opening and closing of the first interface and the second interface passage as well as the first interface and the third interface passage; the safety valve is communicated with the first interface and controls the internal pressure of the gas storage container to be in a preset range; and the pressure regulating valve is arranged on the first interface and the third interface passage and controls the output air pressure of the valve body. According to the invention, a plurality of functional valves are combined and designed into the integrated valve, and the integrated valve has the advantages of reasonable design structure, high integration level, good safety performance and long service life.
Description
Technical Field
The invention belongs to the field of gas storage equipment, and particularly relates to a multifunctional low-pressure integrated valve and a control method thereof.
Background
Existing gas storage methods generally include three storage modes: high-pressure gas, liquid storage and alloy storage; specifically, the high-pressure gas storage system transports gas by containing the gas in a gas bottle under high pressure, so the energy, weight and density of the gas storage system are high, but the gas storage system has a large volume and poor safety. The liquid storage mode cools the gas below the boiling point to realize the liquefaction of the gas, so although the energy, the weight and the density of the liquid storage mode are higher, the liquefaction energy consumption is large, and meanwhile, a heat insulation storage tank is required to be used, so that the liquid storage mode is generally suitable for a large storage tank; the alloy gas storage mode can absorb gas materials with the volume N times that of the metal alloy, particularly hydrogen storage alloy, so that the energy, the weight and the density of the alloy gas storage mode can meet the basic use requirements, but the safety is higher.
Regardless of the gas storage means, various functional valves are involved in the gas release process. Generally, multiple functions such as giving vent to anger, aerifing, pressure release are given vent to anger through external a plurality of function valves in gas storage container's gas outlet among the prior art, but because external a plurality of function valve bodies, lead to the pipeline crisscross winding each other of gas supply line, increase the later maintenance degree of difficulty.
Disclosure of Invention
The invention aims to provide a multifunctional low-pressure integrated valve and a control method thereof, which aim to solve the problems involved in the background art.
The technical scheme of the invention comprises two aspects, in one aspect, the invention provides a multifunctional low-pressure integrated valve for a gas storage container, which comprises:
the valve body is provided with at least one first interface and at least one second interface;
the control valve is used for controlling the opening and closing of the first interface and the second interface passage;
the safety valve is communicated with the first interface and controls the internal pressure and/or temperature of the gas storage container to be in a preset range;
and the pressure regulating valve is arranged on the first interface and the second interface passage and controls the output air pressure of the valve body.
Preferably or optionally, the valve body is provided with at least one first interface, at least one second interface and at least one third interface;
the control valve is used for controlling the opening and closing of the first interface and the second interface passage and/or the first interface and the third interface passage;
the safety valve is communicated with the first interface and controls the internal pressure and/or the internal temperature of the gas storage container to be within a preset range;
and the pressure regulating valve is arranged on the first interface and the third interface passage and controls the output air pressure of the valve body.
Preferably or optionally, the first interface is connected to a gas storage container;
the first interface and the gas storage container are connected in an integrated manner, in a threaded manner or in a clamping manner.
Preferably or optionally, one end of the first interface is provided with a pressure sensor, and an automatic trigger device is mounted on the safety valve for starting the safety valve.
Preferably or optionally, a sealing joint is externally connected to the third interface;
the sealing joint comprises: the first joint is connected with the third interface, and the second joint is connected with the gas consumption end;
when the first connector and the second connector are in a disconnected state, the first connector has a current-cut function and forms an open circuit;
when the second connector is plugged into the first connector, a passage is formed and gas is supplied to the gas consumption end through the pipeline.
Preferably or optionally, the valve body is made of an aluminum alloy, a titanium alloy or metallic copper.
Preferably or optionally, one end of the first interface is provided with a pressure sensor, and an automatic trigger device is mounted on the safety valve for starting the safety valve.
Preferably or optionally, the first joint comprises: the first body part is connected with the third connector in a sealing mode, the second body part is connected with the second connector in a sealing mode, a sealing air nozzle is arranged in the second body part, and an elastic part is arranged outside the sealing air nozzle;
the elastic piece is used for storing energy, so that the sealing air tap has a tendency of keeping closed.
Preferably or optionally, the second joint comprises: a third body portion sealingly connected to the second body portion; the fourth body part is connected with the gas consumption end in a sealing way, a top column is arranged in the third body part, and the top column is a hollow pipeline;
when the second connector is inserted into the first connector, the jacking column jacks up the sealing air nozzle to force the sealing air nozzle to be opened to form a passage, and air is provided for the air consumption end through the hollow pipeline.
Preferably or optionally, the first joint and the second joint are connected by a snap or a fastener.
In another aspect, the present invention further provides a control method of the multifunctional low pressure integrated valve, including the following steps:
in the inflation process, adjusting the control valve, communicating the third interface with the first interface, then externally connecting a negative pressure device on the first interface, and vacuumizing the gas storage container; then adjusting the control valve to communicate the second interface with the first interface, and then externally connecting a gas supply end to the second interface to realize inflation;
in the air outlet process, the second connector is connected with the first connector, then the control valve is adjusted to communicate the third connector with the first connector, and then the third connector is externally connected with the gas consumption end, so that the gas supply to the gas consumption end is realized;
in the pressure relief process, the detection pressure of the pressure sensor is greater than the pressure threshold value, the safety valve is automatically triggered to be opened, the safety valve is communicated with the first interface, and automatic pressure relief is achieved.
The invention relates to a multifunctional low-pressure integrated valve and a control method thereof, compared with the prior art, the multifunctional low-pressure integrated valve has the following beneficial effects:
1. through making up a plurality of functional valves and designing into the pile-up valve, the pile-up valve design structure is reasonable, the integrated level is high, the security performance is good, long service life. The pipeline arrangement of the gas supply line is further simplified, the possibility of mutual staggered winding between pipelines is reduced, and the difficulty of later maintenance is reduced.
2. The gas storage container is connected with the gas outlet through the gas inlet, the first connector is in a broken circuit state when the gas storage container is transported and replaced, the gas outlet of the integrated valve is automatically sealed, the gas tightness of the integrated valve is improved, the hydrogen leakage amount is further reduced, and meanwhile, the disassembly and the assembly of a pipeline are reduced.
3. Through the sealed air cock of design to set up the elastic component in sealed air cock outside, the elastic component energy storage makes sealed air cock has the trend of keeping closed, improves the seal of sealed air cock when the disconnection.
4. With elastic component cross sectional shape design for "W", on the one hand, the elastic component energy storage makes sealed air cock has the trend that keeps closed and can take place certain deformation, works as the elastic component takes place deformation, the elastic component can also play the effect of sealing washer, especially when the elastic component takes place deformation, can strengthen sealed effect greatly.
5. Two annular lips are arranged on the outer surfaces of the first body part and the third body part, a sealing cavity is formed, and the sealing performance of the first joint, the third interface, the second joint and the first joint is improved.
6. A buckle or a fastener is arranged between the first joint and the second joint and used for offsetting a backward acting force of the sealing air tap on the ejection column, and the connection stability and the sealing performance of the first joint and the second joint are ensured.
7. The inner side of the second body part is provided with a groove with a triangular cross section, and the outer edge of the third body part is provided with an embedded body matched with the recess. The insert body is fitted in the groove, so that the sealing performance of the connection between the second joint and the first joint is improved.
Drawings
Fig. 1 is a schematic sectional view of a gas outlet of a hydrogen storage cylinder in the present invention.
Fig. 2 is a schematic view of the structure of the integration valve of the present invention.
Fig. 3 is a schematic view of the connection of the integration valve of the present invention.
Fig. 4 is a schematic view of the connection of an integration valve according to a preferred embodiment of the present invention.
Fig. 5 is a schematic view showing the connection of an integration valve according to another preferred embodiment of the present invention.
Fig. 6 is a schematic view of the structure of the sealing joint of the present invention.
Fig. 7 is a partially enlarged view of the elastic member of the present invention.
Fig. 8 is a schematic view of the structure of the first joint in the present invention.
FIG. 9 is a schematic view of the structure of a second joint according to the present invention.
The reference signs are:
an integrated valve 100, a hydrogen storage bottle 200;
a first port 111, a second port 112, a relief valve 113, a pressure regulating valve 114, a third port 115, a control valve 116, and a valve body 117;
the first connector 120, the first body 121, the second body 122, the sealing air tap 123, the elastic element 124, the first lip 125, the second lip 126, the first sealing cavity 127, and the groove portion 128; a fixing portion 123a, a bent portion 123b, and a sealing portion 123c;
a second connector 130, a third body 131, a fourth body 132, a top post 133, a third lip 134, a fourth lip 135, a second sealed cavity 136, and an insert 137;
Detailed Description
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the invention.
The invention discloses a multifunctional low-pressure integrated valve which is used for a gas storage container and comprises a valve body, a control valve, a safety valve and a pressure regulating valve. The valve body is provided with at least one first interface, at least one second interface and at least one third interface, and it should be noted that, for those skilled in the art, the second interface and the third interface are combined into one on the premise of not affecting the function realization. The control valves are arranged on the connection points of the second interface, the third interface and the first interface and control the opening and closing of the first interface and the second interface passage as well as the first interface and the third interface passage; the safety valve is communicated with the first interface and controls the internal pressure of the gas storage container within a preset range; the pressure regulating valve is arranged on the first interface and the third interface passage and controls the output air pressure of the valve body. Through making up a plurality of functional valves and designing into the integrated valve, the integrated valve's project organization is reasonable, the integrated level is high, the security performance is good, long service life.
Preferably or optionally, the first interface is connected to a gas storage container; the first interface and the gas storage container are connected in an integrated manner, in a threaded manner or in a clamping manner. There are many other alternatives, not described herein, to avoid unnecessary repetition, as will be apparent to those skilled in the art.
Preferably or optionally, a check valve embedded or partially embedded in the valve body is arranged on the second interface; when the second interface is connected with the external air source, the air can only flow to the air storage device in a one-way mode through the external air source, and the air cannot flow reversely through the air storage container, so that the air tightness of the integrated valve is guaranteed. The third interface is provided with a pressure retaining valve which is embedded or partially embedded in the valve body, or the first interface and the third interface are provided with a pressure retaining valve. The third port is only in the open state when the pressure in the gas storage container is greater than the external pressure.
Preferably or optionally, a sealing joint is externally connected to the third interface; the sealing joint includes: the first joint is connected with the third interface, and the second joint is connected with the gas consumption end; when the first connector and the second connector are in a disconnected state, the first connector has a current-cut function and forms an open circuit; when the second connector is plugged into the first connector, a passage is formed and gas is supplied to the gas consumption end through the pipeline.
Preferably or optionally, the valve body is made of an aluminum alloy, a titanium alloy or metallic copper. The stability of above-mentioned material is higher, can be applicable to most gas storage.
Preferably or optionally, one end of the first interface is provided with a pressure sensor for detecting pressure changes in the bottle; and an automatic trigger device is arranged on the safety valve and used for starting the safety valve. The pressure of the gas storage container is ensured to be stable.
Preferably or optionally, the first joint comprises: the first body part is connected with the third interface in a sealing mode, the second body part is connected with the second interface in a sealing mode, a sealing air faucet is arranged in the second body part, an elastic part is arranged outside the sealing air faucet, and the elastic part stores energy, so that the sealing air faucet has the tendency of keeping closed.
Preferably or optionally, the second joint comprises: a third body portion sealingly connected to the second body portion; the fourth body part is connected with the gas consumption end in a sealing way, a top column is arranged in the third body part, and the top column is a hollow pipeline; when the second connector is inserted into the first connector, the jacking column jacks up the sealing air nozzle to force the sealing air nozzle to be opened to form a passage, and air is provided for the air consumption end through the hollow pipeline.
Preferably or alternatively, the tightness of the connection of the third port outlet port and the first body portion is particularly important since the first connector is always in connection with the integrated valve. Therefore, the first joint and the second joint are connected through a buckle or a fastener.
The invention also provides a control method of the multifunctional low-pressure integrated valve, which comprises the following steps: in the inflation process, adjusting the control valve, communicating the third interface with the first interface, then externally connecting a negative pressure device on the first interface, and vacuumizing the gas storage container; then adjusting the control valve to communicate the second interface with the first interface, and then externally connecting a gas supply end to the second interface to realize inflation; in the air outlet process, the second connector is connected with the first connector, then the control valve is adjusted to communicate the third interface with the first interface, and then the third interface is externally connected with the gas consumption end, so that the gas supply of the gas consumption end is realized; in the pressure relief process, the detection pressure of the pressure sensor is greater than the pressure threshold value, the safety valve is automatically triggered to be opened, the safety valve is communicated with the first interface, and automatic pressure relief is achieved.
In order to further explain the technical scheme of the invention, the application takes a hydrogen storage bottle as an example, and the low-pressure integrated valve is applied to the hydrogen storage bottle.
Examples
Referring to fig. 1 to 3, the present embodiment provides an integrated valve 100 for a vehicle-mounted hydrogen storage bottle 200, wherein the integrated valve 100 is a multifunctional integrated valve; the integration valve 100 includes: a valve body 117, a first port 111, a second port 112, a third port 115, a control valve 116, a safety valve 113, and a pressure regulating valve 114; the first interface 111 is communicated with the gas outlet of the bottle body and transmits hydrogen gas into the valve body 117; the second interface 112 is communicated with the first interface 111, and unidirectionally receives hydrogen and transmits the hydrogen to the first interface 111; the third interface 115 is communicated with the first interface 111, receives hydrogen, is connected to a stack, and provides low-pressure hydrogen of 15-65kpa to the stack; the control valve 116 is provided at the connection points of the second port 112, the third port 115 and the first port 111, and controls the opening and closing of the passages of the first port 111 and the second port 112, and the passages of the first port 111 and the third port 115; the safety valve 113 is communicated with the first connector 111 to ensure that the internal pressure of the bottle body is controlled within a low pressure range of 1-3 MPa; the pressure regulating valve 114 is disposed on the path between the first port 111 and the third port 115 for controlling the air pressure in the valve body 117. Through making up a plurality of functional valves and designing into pile-up valve 100, pile-up valve 100's project organization is reasonable, the integrated level is high, the security performance is good, long service life. The pipeline arrangement of the hydrogen energy moped is further simplified, the possibility of mutual staggered winding between pipelines is reduced, and the difficulty of later maintenance is reduced.
In a further embodiment, referring to fig. 4, the first port 111 is a two-way valve, one end of which is connected to the hydrogen storage bottle 200; the second interface 112 is a one-way valve, and when the second interface 112 is connected with an external gas source, the external gas source can only flow to the hydrogen storage bottle 200 in one way, but the hydrogen storage bottle 200 cannot flow in the reverse direction, so that the air tightness of the integrated valve 100 is ensured; the third port 115 is a pressure retaining valve or a check valve, and when the pressure inside the hydrogen storage cylinder 200 is greater than the external pressure, the third port 115 is in a passage state.
In a further embodiment, referring to fig. 5, the second interface and the third interface are combined into one, and two schemes are listed in this example as a specific explanation of this embodiment. In a first scheme, only the first port 111 and the second port 112 are arranged on the valve body 117, wherein the second port 112 is provided with a two-way valve, and the two-way valve is adjusted in an inflation process to ensure one-way circulation of hydrogen from the second port 112 to the first port 111; in the air outlet process, the two-way valve is adjusted to ensure that the hydrogen flows from the first interface 111 to the second interface 112 in a one-way mode. In the second scheme, only the first port 111 and the second port 112 are arranged on the valve body 117, wherein the second port 112 has two air ducts, and the two air ducts are respectively provided with a one-way valve, one-way valve ensures air supply to the pile, and the other one-way valve ensures air inflation to the inside of the bottle body.
In a further embodiment, with reference to fig. 6 to 7, the sealing joint has a shut-off function, the sealing joint comprising two parts, a first joint 120 and a second joint 130; the first connector 120 is connected to the third interface 115, and the second connector 130 is connected to the stack through a pipeline for stack gas supply. When the first connector 120 and the second connector 130 are in a disconnected state, the first connector 120 has a flow stopping function, so that an open circuit is formed, and hydrogen leakage is avoided; when the second connector 130 is plugged into the first connector 120, a passage is formed and connected to the stack through a pipeline, and hydrogen is supplied to the stack; by connecting the sealing joint with the valve port of the third interface 115, when the hydrogen storage bottle 200 is transported and replaced, the first joint 120 is in an open circuit state, and automatically seals the gas outlet of the integrated valve 100, so that the gas tightness of the integrated valve 100 is improved, the hydrogen leakage amount is further reduced, and the disassembly and assembly of pipelines are reduced.
In a further embodiment, the integrated valve 100 is a one-piece structure with better sealing and structural stability. And the integration valve 100 is installed at the gas outlet of the hydrogen storage bottle 200; the integrated valve 100 and the hydrogen storage bottle 200 are integrally connected, instead of being connected by a pipeline or a line, and are directly produced and installed integrally by a factory according to design requirements, and the connection structure includes but is not limited to fixed connection modes such as threaded fit, clamping fit, welding and the like, so that the hydrogen storage bottle 200 and the integrated valve 100 form a closed cavity. Solid hydrogen storage materials are stored in the closed cavity, and after the solid hydrogen storage materials are heated, hydrogen pressure is provided for the galvanic pile through the integrated valve 100 to be 15-50kpa, so that when the hydrogen storage bottle 200 is not used, the internal pressure of the hydrogen storage bottle 200 is small (low-pressure hydrogen storage in a general sense), and harm to users can not be caused.
In further embodiments, the valve body 117 is made of an aluminum alloy, a titanium alloy, or metallic copper. Since the valve body 117 needs to be exposed to hydrogen for a long time, which may cause a corresponding plastic reduction phenomenon to occur in the valve body 117, and hydrogen-induced brittle fracture behavior is generated, in order to improve the hydrogen embrittlement resistance of the valve body 117, preferably, in this embodiment, the valve body 117 is made of an aluminum alloy 6061 or an aluminum alloy 6061 is used as a protective layer prepared on the valve body 117, and at least covers the inner surface of the valve body 117, so as to improve the service life of the valve body 117.
In a further embodiment, one end of the first port 111 is provided with a pressure sensor for detecting pressure changes within the bottle. And an automatic trigger device is installed on the safety valve 113 for starting the safety valve 113. The automatic trigger device comprises a pressure comparison circuit and a valve control circuit. Specifically, the pressure comparison circuit is electrically connected to the pressure sensor, and the pressure threshold (which may be a specific value or a data range) is stored in the pressure comparison circuit, and the pressure comparison circuit receives a pressure signal and compares the current atmospheric pressure with the pressure threshold; the valve control circuit is electrically connected with the pressure comparison circuit and the safety valve 113, and the comparison result of the pressure comparison circuit, such as the currently monitored pressure is greater than the pressure threshold, the current pressure is equal to the pressure threshold, the current pressure is less than the pressure threshold, etc., is sent to the valve control circuit, and different instructions are generated based on different comparison results, for example, when the current pressure is greater than the pressure threshold or the current pressure is equal to the pressure threshold, indicating that the pressure in the hydrogen storage bottle 200 is too large, the activation instruction is generated, and the safety valve 113 is automatically opened.
It should be noted that, the first interface 111 includes: the execution unit plays roles in air inlet stopping and circulation, and the filtering unit is arranged at the air inlet end of the first interface 111; the pressure sensor is positioned between the filter unit and the actuating element, and the solid hydrogen storage material is isolated outside the air inlet end by the filter unit, so that the phenomenon that the solid hydrogen storage material adsorbs the outer surface of the pressure sensor due to electrostatic action is avoided, the interference of the solid hydrogen storage material on the detection precision of the pressure sensor is reduced, and the service life of the pressure sensor is prolonged.
In a further embodiment, referring to fig. 8, the first joint 120 comprises: a first body 121 hermetically connected to an air outlet of the third port 115, a second body 122 hermetically connected to the second connector 130, a sealing air nozzle 123 disposed in the second body 122, and an elastic member 124 disposed outside the sealing air nozzle 123; the sealing nozzle 123 tends to remain closed due to the energy stored in the elastic member 124.
Specifically, an annular first lip 125 and an annular second lip 126 are disposed on an outer surface of the first body portion 121, a predetermined gap is left between the first lip 125 and the second lip 126, when the first body portion 121 is plugged into the air outlet of the third port 115, since the first lip 125, the second lip 126 and the air outlet of the third port 115 are in transition fit, a cavity, that is, a first seal cavity 127 is formed between the first lip 125 and the second lip 126. The first lip 125, the second lip 126 and the air outlet of the third port 115 are in transition fit, and the first seal cavity 127 is used to realize the sealed connection between the air outlet of the third port 115 and the first body 121.
The illustrated sealing air cap 123 includes: a fixing portion 123a fixedly connected to the second body portion 122, a bending portion 123b connected to the fixing portion 123a and inclined along a central axis of the first joint 120, and a sealing portion 123c connected to the bending portion 123 b; and the sealing air tap 123 is an integrally formed structure. In addition, an annular elastic member 124 is disposed between the sealing portion 123c and the first body portion 121, and the position of the elastic member 124 is limited between the sealing portion 123c and the first body portion 121, and may be fixed or fixed by a limiting member 144
The fixing is performed to ensure that the position of the elastic member 124 does not slide relatively, and the sealing air tap 123 has a tendency to remain closed due to the energy stored by the elastic member 124. In this embodiment, the cross-sectional shape of the elastic member 124 is "W", and one end of the elastic member abuts against the first body portion 121 and the other end abuts against the sealing portion 123 c. On the one hand, the elastic member 124 stores energy, so that the sealing nozzle 123 has a tendency of being kept closed and can deform to some extent, and on the other hand, when the elastic member 124 deforms, because the outer surface of the elastic member 124 is coated with a layer of flexible protection material, the elastic member 124 can also function as a sealing ring, and particularly when the elastic member 124 deforms, the sealing effect can be greatly enhanced.
In a further embodiment, referring to fig. 9, the second joint 130 comprises: a third body portion 131 for sealing connection with the second body portion 122; a fourth body part 132 hermetically connected to the stack gas supply line, a top pillar 133 disposed inside the third body part 131 and protruding outward, and in clearance fit with the fixing part 123a, wherein the top pillar 133 is a hollow pipe; when the second connector 130 is inserted into the first connector 120, the top pillar 133 jacks up the sealing air nozzle 123, so that the sealing air nozzle 123 is forced to open, a passage is formed, and hydrogen is provided to the stack gas supply pipeline through the hollow pipeline.
Similarly, an annular third lip 134 and an annular fourth lip 135 are disposed on the outer surface of the third body 131, a predetermined gap is left between the third lip 134 and the fourth lip 135, when the third body 131 is plugged into the first connector 120, since the third lip 134 and the fourth lip 135 are in transition fit with the inner surface of the second body 122, and a cavity, that is, a second sealed cavity 136 is formed between the third lip 134 and the fourth lip 135. In addition, a groove portion 128 having a triangular cross-sectional shape is formed inside the second body portion 122, and an insertion body 137 which is engaged with the recess is formed at an outer edge of the third body portion. By fitting the insert 137 into the groove 128, the third lip 134, the fourth lip 135 and the inner surface of the second body 122 are in transition fit, and the second sealing cavity 136 is used to achieve the sealing connection between the second connector 130 and the first connector 120.
It should be noted that the first joint 120 is always connected to the integrated valve 100, and therefore the tightness of the connection between the outlet port of the third port 115 and the first body portion 121 is particularly important. Therefore, when the first connector 120 is installed on the integrated valve 100, an annular groove 141 is provided at a position outside the air outlet of the third port 115 and aligned with the first lip 125 and the second lip 126, a locking member 142 is installed on the annular groove 141, the annular groove 141 and the locking member 142 are in transition fit, so that the closing degree of the sealing air tap 123 is enhanced, and the transition fit between the air outlet of the third port 115 and the air outlet of the first port 125, the second lip 126 and the third port 115 is further improved, so that the sealing performance of the connection between the air outlet of the third port 115 and the first body part 121 is further improved.
In a further embodiment, the sealing nozzle 123 exerts a rearward force on the top post 133 due to the energy storage of the elastic member 124, and thus the stability of the connection of the sealing joint during gas transfer becomes particularly important. Therefore, a snap or a fastener is provided between the first joint 120 and the second joint 130, so as to ensure the connection stability between the first joint 120 and the second joint 130. In this embodiment, a plurality of protruding points 143 are provided on the outer surface of the top pillar 133, and a ring-shaped stopper 144 corresponding to the protruding points 143 is provided on the fixing portion 123 a; when the second joint 130 is installed, the locking member 142 is slid toward the side close to the third interface 115, and then the second joint 130 is inserted into the first joint 120, since the second body 122 can be slightly deformed, the protrusion 143 can just slide over the limiting member 144, and then the locking member 142 is slid toward the side far from the third interface 115, so that the protrusion 143 cannot move backward, thereby fixing the first joint 120 and the second joint 130.
In order to facilitate understanding of the technical solution of the multifunctional low-pressure integrated valve 100 applied to the hydrogen storage cylinder, a brief description is made of a control method thereof:
in the process of gas filling, the control valve 116 is adjusted to communicate the third interface 115 with the first interface 111, then the first interface 111 is externally connected with a negative pressure device, the hydrogen storage bottle 200 is vacuumized, and the solid hydrogen storage material in the hydrogen storage bottle 200 is activated; then, the control valve 116 is adjusted to communicate the second interface 112 with the second interface 112, and then the second interface 112 is externally connected with hydrogen equipment to realize hydrogen charging;
in the air outlet process, the second connector 130 is connected with the first connector 120, the top column 133 jacks up the sealing air tap 123 to force the sealing air tap 123 to open to form a passage, then the control valve 116 is adjusted to communicate the third interface 115 with the first interface 111, and then the first interface 111 is externally connected with a pile air supply pipeline to realize air supply to the hydrogen equipment;
in the pressure relief process, when the detection pressure of the pressure sensor is greater than the pressure threshold, the safety valve 113 is automatically triggered to be opened, the safety valve 113 is communicated with the first interface 111, and automatic pressure relief is realized.
It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. The invention is not described in detail in order to avoid unnecessary repetition.
Claims (16)
1. A multi-functional low pressure integrated valve for a gas storage vessel, comprising:
the valve body is provided with at least one first interface and at least one second interface; the second interface is provided with a two-way valve, and a sealing joint is externally connected to the second interface; the control valve is used for controlling the opening and closing of the first interface and the second interface passage;
the safety valve is communicated with the first interface and controls the internal pressure and/or temperature of the gas storage container to be in a preset range;
and the pressure regulating valve is arranged on the first interface and the second interface passage and controls the output air pressure of the valve body.
2. The multifunctional low pressure integrated valve according to claim 1, wherein the first port is connected to a gas storage container;
the first interface and the gas storage container are connected in an integrated manner, in a threaded manner or in a clamping manner.
3. The multifunctional low pressure integrated valve according to claim 1, wherein one end of the first port is provided with a pressure sensor, and an automatic trigger device is installed on the safety valve for activating the safety valve.
4. The multifunctional low pressure integrated valve of claim 1, wherein the sealing joint comprises: the first connector is connected with the second connector, and the second connector is connected with the gas consumption end;
when the first connector and the second connector are in a disconnected state, the first connector has a current-cut function and forms an open circuit;
when the second connector is plugged into the first connector, a passage is formed and gas is supplied to the gas consumption end through the pipeline.
5. The multifunctional low pressure integration valve of claim 4, wherein the first connector comprises: the first body part is connected with the second connector in a sealing mode, the second body part is connected with the second connector in a sealing mode, a sealing air nozzle is arranged in the second body part, and an elastic part is arranged outside the sealing air nozzle;
the elastic piece is used for storing energy, so that the sealing air tap has a tendency of keeping closed.
6. The multifunctional low pressure integration valve of claim 5, wherein the second connector comprises: a third body portion sealingly connected to the second body portion; the fourth body part is connected with the gas consumption end in a sealing way, a top column is arranged in the third body part, and the top column is a hollow pipeline;
when the second connector is inserted into the first connector, the jacking column jacks up the sealing air nozzle to force the sealing air nozzle to be opened to form a passage, and air is provided for the air consumption end through the hollow pipeline.
7. The multifunctional low pressure integrated valve according to claim 4, wherein the first joint and the second joint are connected by a snap or a fastener.
8. A multi-functional low pressure integrated valve for use with a gas storage vessel, said integrated valve comprising:
the valve comprises a valve body, wherein at least one first interface, at least one second interface and at least one third interface are arranged on the valve body; a pressure retaining valve or a one-way valve is arranged on the third interface, and a sealing joint is externally connected to the third interface;
the control valve is used for controlling the opening and closing of the first interface and the second interface passage and/or the first interface and the third interface passage;
the safety valve is communicated with the first interface and controls the internal pressure and/or the internal temperature of the gas storage container to be within a preset range;
and the pressure regulating valve is arranged on the first interface and the third interface passage and controls the output air pressure of the valve body.
9. The multifunctional low pressure integrated valve according to claim 8, wherein the first port is connected to a gas storage container;
the first interface and the gas storage container are connected in an integrated manner, in a threaded manner or in a clamping manner.
10. The multifunctional low pressure integrated valve according to claim 8, wherein one end of the first port is provided with a pressure sensor, and an automatic trigger device is installed on the safety valve for activating the safety valve.
11. The multifunctional low pressure integrated valve of claim 8, wherein the sealing joint comprises: the first joint is connected with the third interface, and the second joint is connected with the gas consumption end;
when the first connector and the second connector are in a disconnected state, the first connector has a current-cut function and forms an open circuit;
when the second connector is plugged into the first connector, a passage is formed and gas is supplied to the gas consumption end through the pipeline.
12. The multifunctional low pressure integration valve of claim 11, wherein the first connector comprises: the first body part is connected with the third interface in a sealing mode, the second body part is connected with the second connector in a sealing mode, a sealing air nozzle is arranged in the second body part, and an elastic part is arranged outside the sealing air nozzle;
the elastic piece is used for storing energy, so that the sealing air tap has a tendency of keeping closed.
13. The multifunctional low pressure integrated valve of claim 12, wherein the second connector comprises: a third body portion sealingly connected to the second body portion; the fourth body part is connected with the gas consumption end in a sealing way, a top column is arranged in the third body part, and the top column is a hollow pipeline;
when the second connector is inserted into the first connector, the jacking column jacks up the sealing air nozzle to force the sealing air nozzle to open to form a passage, and air is provided for the air consumption end through the hollow pipeline.
14. The multifunctional low pressure integrated valve according to claim 11, wherein the first connector and the second connector are connected by a snap or a fastener.
15. The multifunctional low-pressure integrated valve according to claim 8, wherein a check valve embedded or partially embedded in the valve body is arranged on the second port;
and a pressure retaining valve is arranged on the first interface, the third interface or a passage of the first interface and the third interface in the valve body.
16. A control method based on the multifunctional low pressure integrated valve of any one of claims 8 to 15, characterized by comprising the following steps:
in the inflation process, the control valve is adjusted to communicate the third interface and the first interface, and then the third interface is externally connected with a vacuumizing device to vacuumize the gas storage container; then adjusting the control valve to communicate the second interface with the first interface, and then externally connecting a gas supply end to the second interface to realize inflation;
in the air outlet process, the second connector is connected with the first connector, then the control valve is adjusted to communicate the third interface with the first interface, and then the third interface is externally connected with the gas consumption end, so that the gas supply of the gas consumption end is realized;
in the pressure relief process, the detection pressure of the pressure sensor is greater than the pressure threshold value, the safety valve is automatically triggered to be opened, the safety valve is communicated with the first interface, and automatic pressure relief is achieved.
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| CN112879802A (en) * | 2021-03-16 | 2021-06-01 | 永安行科技股份有限公司 | Hydrogen storage device combination valve for moving object and control method thereof |
| CN112879794A (en) * | 2021-03-16 | 2021-06-01 | 永安行科技股份有限公司 | Low-pressure safety hydrogen storage device and hydrogen fuel electric bicycle |
| CN113483252B (en) * | 2021-07-05 | 2022-09-13 | 曾霞光 | Novel high-pressure hydrogen storage bottle |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US4948092A (en) * | 1990-03-07 | 1990-08-14 | Royce Medical Company | Combined check valve and fluid pressure relief valve |
| JPH09178096A (en) * | 1995-12-22 | 1997-07-11 | Aichi Koatsu Kk | Disaster corresponding type lp gas vessel valve |
| WO2010021891A1 (en) * | 2008-08-18 | 2010-02-25 | Sigma-Aldrich Co. | Valve assemblies |
| CN101418910B (en) * | 2008-11-28 | 2011-05-25 | 同济大学 | Integral bottle valve FOR vehicle-mounted high-pressure hydrogen storing bottle |
| CN104295552B (en) * | 2014-10-16 | 2017-02-22 | 凯迈（洛阳）气源有限公司 | Multifunctional integrated valve |
| CN108278395A (en) * | 2018-04-13 | 2018-07-13 | 丹阳市飞轮气体阀门有限公司 | A kind of automobile-used hydrogen solenoid valve of overpressured zones decompression |
| CN108953994A (en) * | 2018-07-16 | 2018-12-07 | 德清天旭力信息科技有限责任公司 | Hydrogen fuel cell unmanned plane high pressure gas cylinder cylinder valve |
| CN211423455U (en) * | 2019-12-12 | 2020-09-04 | 未势能源科技有限公司 | Valve assembly for gas storage system, gas storage system and vehicle |
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