Hydrogen leakage alarm detection device for water electrolysis system of hydrogen production station

Abstract

The invention relates to the field of hydrogen leakage detection, in particular to a hydrogen leakage alarm detection device for a water electrolysis system of a hydrogen production station, which comprises a first mounting block, a second mounting block, a liquid storage box and the like, the first mounting block is rotationally connected with a second mounting block; the first mounting block and the second mounting block are arranged in a U shape; the end parts of the first mounting block and the second mounting block are buckled with each other through a bolt to form a U-shaped pipe; a plurality of liquid storage boxes for storing a hydrogen leakage detection solution are arranged on the inner wall of the second mounting block, and a waterproof breathable film is arranged on one side, close to the bent arc pipeline, of each liquid storage box. The friction force between the first mounting block, the second mounting block and the surface of the curved pipeline is increased through the rubber strips, the first mounting block and the second mounting block are prevented from rotating in the curved pipeline, and the sealing performance of a closed space formed by combining the first mounting block, the second mounting block and the curved pipeline is prevented from being affected.

Description

Technical Field

[0001] The present invention relates to the field of hydrogen leakage detection, and particularly to a hydrogen leakage alarm detection device for an electrolyzed water system in a hydrogen production station. Background Art

[0002] The hydrogen leakage warning tape contains chemical substances that change color when exposed to hydrogen, thus visually indicating the leakage location. It is a simple and fast preliminary screening tool for leakage. Therefore, during daily maintenance and safety inspections, staff usually stick the hydrogen leakage warning tape on suspected leakage or high-risk pipeline joints, valves, etc. to detect whether hydrogen leaks. Compared with the straight section, the curved part of the pipeline is more likely to generate mechanical stress concentration, which will cause material fatigue or micro-cracks, and then become the starting point of hydrogen leakage. Therefore, it is very necessary to detect the curved part of the pipeline. However, winding the hydrogen leakage warning tape around the curved part of the pipeline is more difficult and inconvenient than on the straight section. The irregular shape of the curved part of the pipeline makes the tape unable to fit flatly, thus affecting the detection effect. Summary of the Invention

[0003] In order to overcome the disadvantages that winding the hydrogen leakage warning tape around the curved part of the pipeline is more difficult and inconvenient than on the straight section, and the irregular shape of the curved part of the pipeline makes the tape unable to fit flatly, thus affecting the detection effect, the present invention provides a hydrogen leakage alarm detection device for an electrolyzed water system in a hydrogen production station.

[0004] The technical implementation solution of the present invention is: a hydrogen leakage alarm detection device for an electrolyzed water system in a hydrogen production station, including a first mounting block and a second mounting block; the second mounting block is rotatably connected to the first mounting block; both the first mounting block and the second mounting block are arranged in a U shape; the ends of the first mounting block and the second mounting block are buckled with each other through pins to form a U-shaped pipe; it further includes a liquid storage box and a partition component; several liquid storage boxes for storing the solution for detecting hydrogen leakage are arranged on the inner wall of the second mounting block, and a waterproof and breathable membrane is arranged on one side of the liquid storage box close to the curved pipeline; a partition component for preventing the liquid storage box from being contaminated is installed inside the first mounting block and the second mounting block.

[0005] Optionally, both the first mounting block and the second mounting block are made of transparent rubber material.

[0006] Optionally, several rubber strips are arranged on one side of both the first mounting block and the second mounting block close to the curved pipeline.

[0007] Optionally, each liquid storage box is located in the upper part of the inner surface of the second mounting block.

[0008] Optionally, the separating component includes a connecting rod and separating strips; a connecting rod is fixedly connected inside the first mounting block; a plurality of separating strips are fixedly connected to the connecting rod, each separating strip is made of an elastically deformable material, and each liquid storage box is located between two adjacent separating strips.

[0009] Optionally, an air pump is further included; the connecting rod and the separating strips are both arranged as hollow structures, and each separating strip communicates with the connecting rod; the rear side of the first mounting block is arranged as a hollow structure; an air pump is fixedly connected to the rear side of the first mounting block, and the input end of the air pump communicates with the outside; the rear end of the connecting rod is rotatably connected to the first mounting block at the rear side and communicates with each other.

[0010] Optionally, each separating strip is arranged as a curved arc shape, and each separating strip fits with a curved arc pipeline.

[0011] Optionally, a sealing block is further included; a sealing block for enhancing the separating effect is fixedly connected to the end of each separating strip; an inner concave surface is arranged on each sealing block.

[0012] Optionally, a limiting strip is further included; a plurality of limiting strips for restricting the expansion direction of the separating strips are fixedly connected to the first mounting block and the second mounting block; two adjacent limiting strips form a group, and each group of limiting strips on the first mounting block and the second mounting block is arranged symmetrically up and down; the separating strip is located between the upper and lower groups of limiting strips.

[0013] Optionally, a one-way film is further included; an air vent hole is arranged on the rear side of the first mounting block, and the air vent hole communicates with the connecting rod; a plurality of through holes are arranged on each separating strip; a plurality of one-way films are fixedly connected to each separating strip, and each one-way film is located in an adjacent through hole.

[0014] The present invention has the following advantages: The present invention realizes increasing the friction force between the first mounting block, the second mounting block and the surface of the curved arc pipeline through the rubber strip, preventing the first mounting block and the second mounting block from rotating on the curved arc pipeline, and avoiding affecting the sealing performance of the closed space formed by the combination of the first mounting block, the second mounting block and the curved arc pipeline; By reacting the working liquid in the liquid storage box with hydrogen, the staff can judge the leakage area of the curved arc pipeline according to whether the color of the liquid storage box changes, thereby improving the accuracy of positioning the hydrogen leakage part; By separating the second mounting block and the curved arc pipeline through the connecting rod and the separating strips, direct contact between the second mounting block and the surface of the curved arc pipeline is avoided, thereby preventing the waterproof and breathable film on the liquid storage box from sticking to the dirt on the surface of the curved arc pipeline, causing blockage of the waterproof and breathable film and affecting the determination of the leakage part of the curved arc pipeline, and improving the work efficiency; The hydrogen is blocked by the inflated partition strip to prevent it from diffusing in all directions and reacting with the liquid storage boxes in other areas, enabling the staff to quickly lock the problem area without having to check the entire curved pipe, which greatly improves the emergency response speed and efficiency. Brief Description of the Drawings

[0015] Figure 1 Schematic three-dimensional structure diagram of the hydrogen leakage alarm detection device for the electrolyzed water system in the hydrogen production station of the present invention; Figure 2 Schematic three-dimensional structure diagram of the combination of the first mounting block and the partition strip of the present invention; Figure 3 Schematic three-dimensional structure diagram of the combination of the second mounting block, the connecting rod and the partition strip of the present invention; Figure 4 Schematic three-dimensional structure diagram of the combination of the connecting rod and the air pump of the present invention; Figure 5 The partition strip and the limiting strip of the present invention; Figure 6 Schematic three-dimensional structure diagram of the combination of the sealing block and the one-way film of the present invention.

[0016] The meanings of the reference numerals in the drawings: 1 - the first mounting block, 1001 - the rubber strip, 1002 - the air vent hole, 2 - the second mounting block, 4 - the curved pipe, 3 - the liquid storage box, 201 - the connecting rod, 202 - the partition strip, 20201 - the through hole, 203 - the air pump, 204 - the sealing block, 20401 - the concave surface, 205 - the limiting strip, 206 - the one-way film. Detailed Description of the Embodiments

[0017] Referring to the embodiments herein means that the specific features, structures, or characteristics described in connection with the embodiments can be included in at least one embodiment of the present invention. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0018] Embodiment 1 A hydrogen leakage alarm detection device for the electrolyzed water system in a hydrogen production station, as Figures 1 - 4 shown, includes a first mounting block 1 and a second mounting block 2; the second mounting block 2 is rotatably connected to the first mounting block 1; both the first mounting block 1 and the second mounting block 2 are U-shaped; the ends of the first mounting block 1 and the second mounting block 2 are buckled with each other through pins to form a U-shaped pipe; It also includes a liquid storage box 3 and a partition component; several liquid storage boxes 3 are arranged on the inner wall of the second mounting block 2, and a waterproof and breathable film is arranged on one side of the liquid storage box 3 close to the bent arc pipeline 4; a partition component is installed inside the first mounting block 1 and the second mounting block 2.

[0019] Both the first mounting block 1 and the second mounting block 2 are made of transparent rubber material.

[0020] A number of rubber strips 1001 are arranged on one side of both the first mounting block 1 and the second mounting block 2 close to the bent arc pipeline 4.

[0021] Each liquid storage box 3 is located in the upper part of the inner surface of the second mounting block 2; since the density of hydrogen is less than that of air, by arranging the liquid storage box 3 in the upper part of the inner surface of the second mounting block 2, most of the leaked hydrogen can pass through the waterproof and breathable film on the lower side of the liquid storage box 3 and react with the TMB solution inside the liquid storage box 3, improving the detection efficiency of the TMB solution in the liquid storage box 3 for hydrogen.

[0022] The partition component includes a connecting rod 201 and a partition strip 202; the connecting rod 201 is fixedly connected inside the first mounting block 1; seven partition strips 202 are fixedly connected to the connecting rod 201, each partition strip 202 is made of an elastic deformation material, and each liquid storage box 3 is located between two adjacent partition strips 202.

[0023] It also includes an air pump 203; both the connecting rod 201 and the partition strip 202 are arranged as hollow structures, and each partition strip 202 is communicated with the connecting rod 201; the rear side of the first mounting block 1 is arranged as a hollow structure; an air pump 203 is fixedly connected to the rear side of the first mounting block 1, and the input end of the air pump 203 is communicated with the outside; the rear end of the connecting rod 201 is rotatably connected to the first mounting block 1 at the rear side and is mutually communicated.

[0024] Each partition strip 202 is arranged in a bent arc shape and is in fit with the bent arc pipeline 4.

[0025] The working principle of this embodiment is as follows: The hydrogen leakage warning tape contains chemical substances and will change color when encountering hydrogen, thus intuitively indicating the leakage position. It is a simple and fast preliminary screening tool for leakage. Therefore, when staff conduct daily maintenance and safety inspections, they usually stick the hydrogen leakage warning tape on suspected leakage or high-risk pipeline joints, valves and other positions to detect whether hydrogen leaks. The bent arc part of the pipeline is more likely to generate mechanical stress concentration than the straight section, which will cause material fatigue or microcracks, and then become the starting point of hydrogen leakage. Therefore, it is very necessary to detect the bent arc part of the pipeline. However, it is more difficult and inconvenient to wind the hydrogen leakage warning tape around the bent arc part of the pipeline than the straight section. The irregular shape of the bent arc part of the pipeline makes the tape unable to fit flatly, thus affecting the detection effect.

[0026] First step: First, select the first mounting block 1 and the second mounting block 2 that are adapted to the bending degree of the curved pipe 4. Then, first place the second mounting block 2 against the upper surface of the curved pipe 4, and then rotate the first mounting block 1 so that the first mounting block 1 and the second mounting block 2 wrap the curved pipe 4. Then, use a pin to fasten the rear side and the front side of the first mounting block 1 and the second mounting block 2 together respectively, thus completing the installation of the first mounting block 1 and the second mounting block 2. At this time, the space between the first mounting block 1, the second mounting block 2 and the curved pipe 4 is in a sealed state. The friction between the first mounting block 1, the second mounting block 2 and the curved pipe 4 is increased by the rubber strip 1001, improving the stability of the first mounting block 1 and the second mounting block 2 on the curved pipe 4, and at the same time enhancing the sealing performance of the first mounting block 1 and the second mounting block 2 to the curved pipe 4.

[0027] Since the density of hydrogen is less than that of air, the leaked hydrogen will move upward and gradually approach the liquid storage box 3 above. And the liquid storage box 3 contains a pre-prepared solution, which is a working solution prepared by dissolving TMB powder in ethanol or water according to a certain ratio. By arranging the liquid storage box 3 at the upper part of the inner surface of the second mounting block 2, most of the hydrogen can pass through the waterproof and breathable membrane on the lower side of the liquid storage box 3 and react with the TMB solution inside the liquid storage box 3, causing the TMB solution above the leakage part to change from colorless to blue, thus improving the detection efficiency of the TMB solution in the liquid storage box 3 for hydrogen. At the same time, since both the first mounting block 1 and the second mounting block 2 are made of transparent rubber material, the color change of the TMB solution inside the liquid storage box 3 can be observed manually through the first mounting block 1 and the second mounting block 2, so as to determine that the curved pipe 4 has a hydrogen leak, which is convenient for subsequent professional treatment of the curved pipe 4 by artificial.

[0028] Considering that most of the curved pipes 4 are located outdoors and there are dirt or wetness on the surface of the curved pipes 4, to prevent the waterproof and breathable membrane of the liquid storage box 3 inside the second mounting block 2 from being contaminated when the first mounting block 1 and the second mounting block 2 are fastened together, resulting in blockage of the waterproof and breathable membrane and affecting the subsequent detection of the hydrogen leakage part. At this time, the second mounting block 2 and the curved pipe 4 are separated by the connecting rod 201 and the partition strip 202, thus avoiding direct contact between the inner surface of the second mounting block 2 and the surface of the curved pipe 4, so that there is a gap between the waterproof and breathable membrane of the liquid storage box 3 and the outer surface of the curved pipe 4, improving the detection efficiency of the solution inside the liquid storage box 3.

[0029] Meanwhile, the air pump 203 is started to pump air outwards. The outside air enters the inside of the connecting rod 201 and the partition strip 202 from the rear end of the first mounting block 1, causing the partition strip 202 to gradually expand. The expanded partition strip 202 will gradually fit tightly with the outer surface of the curved pipe 4, so that independent chambers are formed between adjacent partition strips 202 and the first mounting block 1 and the second mounting block 2, and the curved pipe 4 is divided into multiple independent regions. There is a liquid storage box 3 in each independent region. When hydrogen continuously leaks at the leakage part of the curved pipe 4, the expanded partition strip 202 blocks the hydrogen, preventing the hydrogen from diffusing around and reacting with the liquid storage boxes 3 in other regions, enabling the staff to quickly lock the problem area without having to inspect the entire curved pipe 4, greatly improving the emergency response speed and efficiency. At the same time, by setting each partition strip 202 to be curved, the partition strip 202 wraps and fits the curved pipe 4 to the greatest extent, thereby improving the blocking effect of the partition strip 202 on hydrogen and the accuracy of positioning the hydrogen leakage part.

[0030] Embodiment 2 Based on Embodiment 1, as Figure 1 、 Figure 2 、 Figure 5 and Figure 6 shown, it further includes a sealing block 204; a sealing block 204 is fixedly connected to the end of each partition strip 202; an inner concave surface 20401 is provided on each sealing block 204.

[0031] It further includes a limiting strip 205; a plurality of limiting strips 205 are fixedly connected to the first mounting block 1 and the second mounting block 2; two adjacent limiting strips 205 form a group, and each group of limiting strips 205 on the first mounting block 1 and the second mounting block 2 is symmetrically arranged up and down; the partition strip 202 is located between the upper and lower groups of limiting strips 205.

[0032] It further includes a one-way film 206; an air release hole 1002 is provided at the rear side of the first mounting block 1, and the air release hole 1002 is communicated with the connecting rod 201; a plurality of through holes 20201 are provided on each partition strip 202; a plurality of one-way films 206 are fixedly connected to each partition strip 202, and each one-way film 206 is located in the adjacent through hole 20201.

[0033] The working steps of this embodiment are as follows: In the second step of Embodiment 1: When the partition strip 202 gradually expands, as Figure 6As shown, the ends of the partition strip 202 will gradually approach. At this time, the lower end of the partition strip 202 will gradually approach and fit into the concave surface 20401 of the sealing block 204, forming a complete arc shape for the partition strip 202, thereby further enhancing the hydrogen barrier effect of the partition strip 202 and assisting the staff in quickly locating the leakage area.

[0034] Meanwhile, since the partition strip 202 is located between two groups of limiting strips 205, that is, the partition strip 202 is restricted and blocked by the four limiting strips 205 during the expansion process, the partition strip 202 can only expand towards the central part of the curved arc pipeline 4, thereby further improving the hydrogen barrier effect of the partition strip 202.

[0035] After the detection is completed, the air vent 1002 at the rear end of the first mounting block 1 is opened to allow some of the gas inside the connecting rod 201 and the partition strip 202 to be discharged to the outside. Meanwhile, since a one-way film 206 is provided on each through hole 20201 of the partition strip 202, when some of the gas inside the connecting rod 201 and the partition strip 202 is discharged to the outside through the air vent 1002, the one-way film 206 opens, and a suction force will be generated on the through hole 20201 of the partition strip 202 to suck the dust and impurities adhering to the waterproof and breathable film of the liquid storage box 3, preventing the dust and impurities from blocking the waterproof and breathable film of the liquid storage box 3 and interfering with subsequent detections.

[0036] The above embodiments are provided for those skilled in the art to implement or use the present invention. Those skilled in the art can make various modifications or changes to the above embodiments without departing from the inventive concept of the present invention. Therefore, the protection scope of the present invention is not limited by the above embodiments, but should be the maximum scope that conforms to the innovative features mentioned in the claims.

Claims

1. A hydrogen leakage alarm detection device for an electrolyzed water system in a hydrogen production station, comprising a first mounting block (1) and a second mounting block (2); the second mounting block (2) is rotatably connected to the first mounting block (1); both the first mounting block (1) and the second mounting block (2) are arranged in a U shape; the ends of the first mounting block (1) and the second mounting block (2) are buckled with each other through a bolt to form a U-shaped pipe; characterized in that: It also includes a liquid storage box (3) and a partition component; several liquid storage boxes (3) for storing the solution for detecting hydrogen leakage are arranged on the inner wall of the second mounting block (2), and a waterproof and breathable membrane is arranged on the side of the liquid storage box (3) close to the curved pipe (4); a partition component for preventing the liquid storage box (3) from being contaminated is installed inside the first mounting block (1) and the second mounting block (2).

2. The hydrogen leakage alarm detection device for the electrolyzed water system of a hydrogen production station according to claim 1, characterized in that: Both the first mounting block (1) and the second mounting block (2) are made of transparent rubber material.

3. The hydrogen leakage alarm detection device for the electrolyzed water system of a hydrogen production station according to claim 1, wherein: Several rubber strips (1001) are arranged on one side of the first mounting block (1) and the second mounting block (2) close to the curved pipe (4).

4. The hydrogen leakage alarm detection device for the electrolyzed water system of a hydrogen production station according to claim 1, wherein: Each liquid storage box (3) is located at the upper part of the inner surface of the second mounting block (2).

5. The hydrogen leakage alarm detection device for the electrolyzed water system of a hydrogen production station according to claim 1, characterized in that: The partition component includes a connecting rod (201) and partition strips (202); the connecting rod (201) is fixedly connected inside the first mounting block (1); several partition strips (202) are fixedly connected to the connecting rod (201), each partition strip (202) is made of an elastic deformation material, and each liquid storage box (3) is located between two adjacent partition strips (202).

6. The hydrogen leakage alarm detection device for the electrolyzed water system of a hydrogen production station according to claim 5, characterized in that: It also includes an air pump (203); the connecting rod (201) and the partition strips (202) are both arranged in a hollow structure, and each partition strip (202) is communicated with the connecting rod (201); the rear side of the first mounting block (1) is arranged in a hollow structure; an air pump (203) is fixedly connected to the rear side of the first mounting block (1), and the input end of the air pump (203) is communicated with the outside; the rear end of the connecting rod (201) is rotatably connected to the first mounting block (1) at the rear side and is mutually communicated.

7. A hydrogen leakage alarm detection device for an electrolyzed water system in a hydrogen production station according to claim 5, characterized in that: Each partition strip (202) is arranged in a curved shape, and each partition strip (202) is attached to the curved pipe (4).

8. The hydrogen leakage alarm detection device for the electrolyzed water system of a hydrogen production station according to claim 5, characterized in that: It also includes a sealing block (204); a sealing block (204) for enhancing the partitioning effect is fixedly connected to the end of each partition strip (202); an inner concave surface (20401) is arranged on each sealing block (204).

9. The hydrogen leakage alarm detection device for the electrolyzed water system of a hydrogen production station according to claim 7, characterized in that: It also includes a limiting strip (205); several limiting strips (205) for restricting the expansion direction of the partition strip (202) are fixedly connected to the first mounting block (1) and the second mounting block (2); two adjacent limiting strips (205) form a group, and each group of limiting strips (205) on the first mounting block (1) and the second mounting block (2) is arranged symmetrically up and down; the partition strip (202) is located between the upper and lower groups of limiting strips (205).

10. A hydrogen leakage alarm detection device for an electrolyzed water system in a hydrogen production station according to claim 9, characterized in that: It also includes a one-way membrane (206); an air vent hole (1002) is arranged on the rear side of the first mounting block (1), and the air vent hole (1002) is communicated with the connecting rod (201); several through holes (20201) are arranged on each partition strip (202); several one-way membranes (206) are fixedly connected to each partition strip (202), and each one-way membrane (206) is located in the adjacent through hole (20201).

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