Safety valve with detection function for hydrogen storage device

Abstract

The utility model discloses a safety valve with a detection function for a hydrogen storage device, which belongs to the technical field of hydrogen storage, and comprises a detection switching mechanism, the detection switching mechanism comprises a three-way electromagnetic valve, the gas inlet end of the three-way electromagnetic valve is detachably connected with a gas pressure sensor, and the gas pressure sensor is connected with the detection switching mechanism. The surface of the three-way electromagnetic valve is fixedly connected with a controller; the detection switching mechanism can detect the pressure during pressure relief in real time while the electric control pressure relief valves relieve pressure, when detection data is lower than preset pressure lower limit data, the detection switching mechanism can communicate the hydrogen storage tank with the other unused electric control pressure relief valve, and at the moment, the other unused electric control pressure relief valve is normally put into operation, so that the hydrogen storage tank is not in use. And meanwhile, the controller correspondingly controls to open the audible and visual alarm close to the electric control pressure release valve needing to be replaced according to a program preset in the controller by a worker, and the audible and visual alarm gives an audible and visual alarm to warn surrounding workers to immediately replace the electric control pressure release valve.

Description

Technical Field

[0001] This utility model relates to the field of hydrogen storage technology, specifically to a safety valve for a hydrogen storage device with detection function. Background Technology

[0002] Hydrogen production and storage devices are equipment and systems used to store hydrogen. High-pressure container storage is currently the most mature and commonly used method of hydrogen storage, in which hydrogen is compressed to high pressure and stored in specially designed containers.

[0003] Currently, a Chinese patent discloses a hydrogen production and storage device with an overpressure relief protection mechanism (authorization announcement number CN216556494U). When the hydrogen pressure in the storage tank is too high, the hydrogen impacts the guide column, causing the guide column to move to the right. That is, the guide column, the first sealing plate, and the second sealing plate move to the right, and the spring is compressed. At this time, the secondary through hole and the main through hole are no longer blocked, and the hydrogen smoothly passes through the second fixed plate and the first fixed plate and enters the pressure relief tank. When the pressure in the storage tank drops, the hydrogen can no longer impact the guide column to move, and the spring forces the first sealing plate, the guide column, and other components to reset, that is, the guide tube is in a closed state, thereby realizing the automatic pressure relief function of the device, avoiding excessive internal pressure of the device, and improving the safety of the device.

[0004] Because the above-mentioned device uses a spring-loaded pressure relief safety valve for pressure relief, the spring is prone to failure due to high stress when it is subjected to static load or impact load for a long time. When the above-mentioned safety valve is damaged, the staff needs to close the manual control valve to replace it. At this time, the hydrogen storage tank is in a fully closed state. During this process, there is still a safety hazard of excessive pressure in the hydrogen storage tank.

[0005] Based on this, this utility model designs a safety valve for a hydrogen storage device with detection function to solve the above problems. Utility Model Content

[0006] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a safety valve for a hydrogen storage device with detection function.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A safety valve for a hydrogen storage device with detection function, comprising:

[0009] The detection switching mechanism includes a three-way solenoid valve, the inlet end of which is detachably connected to a gas pressure sensor, and the surface of which is fixedly connected to a controller.

[0010] Two electrically controlled pressure relief valves are provided, each of which is detachably connected to the other two outlets of the three-way solenoid valve.

[0011] Furthermore, the outlet end of the electrically controlled pressure relief valve is detachably connected to a one-way valve, and the blocking direction of the one-way valve is the same as the direction from the three-way solenoid valve to the electrically controlled pressure relief valve.

[0012] Furthermore, the other two outlets of the three-way solenoid valve are fixedly connected to audible and visual alarms, which are symmetrically distributed on both sides of the controller.

[0013] Furthermore, the air inlet end of the three-way solenoid valve is fixedly connected to and connected to an internally threaded pipe, and the inner thread of the internally threaded pipe is connected to an externally threaded pipe that is fixedly connected to a gas pressure sensor.

[0014] Furthermore, a first sealing ring, which is made of fluororubber, is embedded in the top of the internally threaded tube and contacts the gas pressure sensor.

[0015] Furthermore, the three-way solenoid valve and the one-way valve are all fixedly connected to and connected to the electrically controlled pressure relief valve by a connecting component. The connecting component between the three-way solenoid valve and the electrically controlled pressure relief valve includes an internal threaded connector fixedly connected to and connected to the air outlet end of the three-way solenoid valve. An external threaded connector is threadedly connected to the surface of the internal threaded connector. An anti-detachment tube fixedly connected to and connected to the electrically controlled pressure relief valve is slidably connected to the inner side of the external threaded connector.

[0016] Furthermore, the local cross-sectional shape of the anti-detachment tube is T-shaped, and the local cross-sectional diameter of the anti-detachment tube located inside the external threaded joint is larger than the local cross-sectional diameter at the connection between the anti-detachment tube and the external threaded joint.

[0017] Furthermore, a second sealing ring is embedded between the internal threaded connector and the anti-detachment tube, and the second sealing ring is a fluororubber material component. Beneficial effects

[0018] 1. The detection and switching mechanism can detect the pressure in real time while the electrically controlled pressure relief valve is releasing pressure. When the detected data is lower than the preset lower pressure limit, the detection and switching mechanism can connect the hydrogen storage tank to another unused electrically controlled pressure relief valve. At this time, the other unused electrically controlled pressure relief valve is put into normal operation. At the same time, the controller controls the activation of the audible and visual alarm near the electrically controlled pressure relief valve that needs to be replaced according to the preset program of the staff. The audible and visual alarm will sound an alarm to alert the staff in the vicinity to come and replace it in time. During this process, it will not affect the hydrogen storage tank from automatically releasing pressure when the pressure reaches the preset upper limit of the electrically controlled pressure relief valve, so as to ensure the safe operation of the hydrogen storage tank.

[0019] 2. The one-way valve can prevent hydrogen inside the gas tank from leaking out through the replacement opening when the staff replaces the electrically controlled pressure relief valve. This eliminates the need for staff to actively seal the gas tank, ensuring the normal operation of the pressure relief operation and reducing the burden on staff when replacing the electrically controlled pressure relief valve. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of a safety valve for a hydrogen storage device with detection function according to the present invention;

[0022] Figure 2 This is a vertical sectional view of the overall structure of a safety valve for a hydrogen storage device with detection function according to the present invention;

[0023] Figure 3 This is a horizontal cross-sectional view of the overall structure of a safety valve for a hydrogen storage device with detection function according to this utility model;

[0024] Figure 4 This is an exploded schematic diagram of the overall structure of a safety valve for a hydrogen storage device with detection function according to this utility model.

[0025] The labels in the diagram represent:

[0026] 100. Detection switching mechanism; 110. Three-way solenoid valve; 120. Gas pressure sensor; 130. Controller; 140. Internal threaded pipe; 150. External threaded pipe; 160. First sealing ring; 170. Connecting assembly; 171. Internal threaded connector; 172. External threaded connector; 173. Anti-detachment pipe; 174. Second sealing ring; 200. Electrically controlled pressure relief valve; 300. Check valve; 400. Audible and visual alarm. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0028] The present invention will be further described below with reference to the embodiments.

[0029] In some embodiments, please refer to the appendix to the instruction manual. Figure 1-4 A safety valve for a hydrogen storage device with detection function, comprising:

[0030] The detection switching mechanism 100 includes a three-way solenoid valve 110. A gas pressure sensor 120 is detachably connected to the air inlet end of the three-way solenoid valve 110, and a controller 130 is fixedly connected to the surface of the three-way solenoid valve 110.

[0031] First, connect the inlet of the three-way solenoid valve 110 to one of the connections of the hydrogen storage tank via a flange or threaded connection. Then, connect the outlets of the two one-way valves 300 to the inlet of the same gas storage tank via a flange or threaded connection. At this point, the detection and switching mechanism 100 can operate normally.

[0032] There are two electrically controlled pressure relief valves 200, which are detachably connected to the other two outlets of the three-way solenoid valve 110.

[0033] The outlet end of the electrically controlled pressure relief valve 200 is detachably connected to a one-way valve 300. The blocking direction of the one-way valve 300 is the same as that from the three-way solenoid valve 110 to the electrically controlled pressure relief valve 200. The one-way valve 300 can prevent the hydrogen inside the gas storage tank from leaking out through the replacement opening when the operator replaces the electrically controlled pressure relief valve 200. This eliminates the need for the operator to actively seal the gas storage tank, ensuring the normal operation of the pressure relief operation and reducing the burden on the operator when replacing the electrically controlled pressure relief valve 200.

[0034] The other two outlets of the three-way solenoid valve 110 are fixedly connected to audible and visual alarms 400, which are symmetrically distributed on both sides of the controller 130.

[0035] The inlet end of the three-way solenoid valve 110 is fixedly connected to and connected to an internal threaded pipe 140, and the inner thread of the internal threaded pipe 140 is connected to an external threaded pipe 150 which is fixedly connected to the gas pressure sensor 120.

[0036] The top of the internally threaded tube 140 is fitted with a first sealing ring 160 that contacts the gas pressure sensor 120. The first sealing ring 160 is a fluororubber material component.

[0037] In some embodiments, please refer to the appendix to the instruction manual. Figure 3-4The three-way solenoid valve 110 and the one-way valve 300 are all fixedly connected to the electrically controlled pressure relief valve 200 and are connected by a connecting component 170. The connecting component 170 between the three-way solenoid valve 110 and the electrically controlled pressure relief valve 200 includes an internal threaded connector 171 fixedly connected to and connected to the air outlet of the three-way solenoid valve 110. An external threaded connector 172 is threadedly connected to the surface of the internal threaded connector 171. An anti-detachment tube 173 is slidably connected to the inner side of the external threaded connector 172 and is fixedly connected to and connected to the electrically controlled pressure relief valve 200.

[0038] The local cross-sectional shape of the anti-detachment tube 173 is T-shaped, and the local cross-sectional diameter of the anti-detachment tube 173 located inside the external threaded joint 172 is larger than the local cross-sectional diameter at the connection between the anti-detachment tube 173 and the external threaded joint 172.

[0039] A second sealing ring 174 is embedded between the internal threaded connector 171 and the anti-detachment tube 173. The second sealing ring 174 is a fluororubber component, which can improve the sealing performance between the internal threaded connector 171 and the anti-detachment tube 173 and reduce the probability of hydrogen leakage.

[0040] In this embodiment of the invention, when the corresponding electrically controlled pressure relief valve 200 releases pressure, the gas pressure sensor 120 simultaneously transmits the detected pressure data to the controller 130. The controller 130 compares the detected data with the preset lower pressure limit data. If the detected data is lower than the preset lower pressure limit data, it indicates that the internal spring element of the electrically controlled pressure relief valve 200 is aging and loose. The controller 130 controls the three-way solenoid valve 110 to connect the hydrogen storage tank to another electrically controlled pressure relief valve 200 according to the preset program of the operator. At this time, the other unused electrically controlled pressure relief valve 200 is put into normal operation. At the same time, the controller 130 controls the activation of the audible and visual alarm 400 near the electrically controlled pressure relief valve 200 that needs to be replaced according to the preset program of the operator. The audible and visual alarm 400 emits an audible and visual alarm to alert the surrounding personnel to come and replace it immediately. During this process, it will not affect the hydrogen storage tank from automatically releasing pressure when the pressure reaches the preset upper limit of the electrically controlled pressure relief valve 200, so as to ensure the safe operation of the hydrogen storage tank.

[0041] It should be noted that the three-way solenoid valve 110, gas pressure sensor 120, controller 130, electrically controlled pressure relief valve 200, check valve 300, and audible and visual alarm 400 mentioned above are all devices with relatively mature existing technology. The specific models can be selected according to actual needs. At the same time, the three-way solenoid valve 110, gas pressure sensor 120, controller 130, electrically controlled pressure relief valve 200, and audible and visual alarm 400 can be powered by the built-in power supply or by mains power. The specific power supply method should be selected according to the situation, which will not be elaborated here.

[0042] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A safety valve for a hydrogen storage device with detection function, characterized in that, The utility model relates to a gas pressure detection and alarm device, including: Detect switching mechanism (100), the detect switching mechanism (100) includes three -way electromagnetic valve (110), the air inlet end of three -way electromagnetic valve (110) is detachably connected with gas pressure sensor (120), the surface fixed connection of three -way electromagnetic valve (110) has controller (130); Two electric control pressure relief valves (200) are detachably connected to the other two gas outlet ends of the three-way electromagnetic valve (110).

2. The safety valve for a hydrogen storage device with a detection function according to claim 1, characterized by, The gas outlet end of the electric control pressure relief valve (200) is detachably connected to a check valve (300), and the blocking direction of the check valve (300) is the same as the direction from the three-way electromagnetic valve (110) to the electric control pressure relief valve (200).

3. The safety valve for a hydrogen storage device with a detection function according to claim 1, characterized by, The other two gas outlet ends of the three-way electromagnetic valve (110) are fixedly connected to a sound-light alarm (400), and the sound-light alarm (400) is symmetrically distributed on both sides of the controller (130).

4. The safety valve for a hydrogen storage device with a detection function according to claim 1, characterized by, The air inlet end of the three-way electromagnetic valve (110) is fixedly connected and communicated with an internally threaded pipe (140), and the inner side of the internally threaded pipe (140) is threadedly connected with an externally threaded pipe (150) fixedly connected with the gas pressure sensor (120).

5. The safety valve for a hydrogen storage device with a detection function according to claim 4, characterized by A first sealing ring (160) in contact with the gas pressure sensor (120) is embedded and installed at the top of the internally threaded pipe (140), and the first sealing ring (160) is a fluorine rubber material member.

6. The safety valve for a hydrogen storage device with a detection function according to claim 1, characterized by, The three-way electromagnetic valve (110) and the check valve (300) are fixedly connected and communicated with the electric control pressure relief valve (200) through a connecting assembly (170), and the connecting assembly (170) arranged between the three-way electromagnetic valve (110) and the electric control pressure relief valve (200) includes an internally threaded joint (171) fixedly connected and communicated with the gas outlet end of the three-way electromagnetic valve (110), an externally threaded joint (172) threadedly connected with the surface of the internally threaded joint (171), and a anti-dropping pipe (173) fixedly connected with the electric control pressure relief valve (200) and slidably connected with the inner side of the externally threaded joint (172).

7. The safety valve for a hydrogen storage device with a detection function according to claim 6, characterized by The local cross-sectional shape of the anti-dropping pipe (173) is T-shaped, and the local cross-sectional diameter of the anti-dropping pipe (173) arranged on the inner side of the externally threaded joint (172) is greater than the local cross-sectional diameter of the connection between the anti-dropping pipe (173) and the externally threaded joint (172).

8. The safety valve for a hydrogen storage device with a detection function according to claim 6, characterized by, A second sealing ring (174) is embedded and installed between the internally threaded joint (171) and the anti-dropping pipe (173), and the second sealing ring (174) is a fluorine rubber material member.

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