Photovoltaic hydrogen production pressure detection device

Abstract

The utility model relates to the field of photovoltaic hydrogen production, and discloses a photovoltaic hydrogen production pressure detection device which comprises a storage tank, a piston piece is connected to an inner wall piston of the storage tank, an upper baffle is fixedly connected to the inner wall, located above the piston piece, of the storage tank, and a lower baffle is fixedly connected to the inner wall, located below the piston piece, of the storage tank. A pressure gauge is arranged at the top end of the storage tank, a high-pressure gas conveying pipe is arranged at the bottom end of the pressure gauge, a hydrogen inlet pipe penetrates through and is fixedly connected to the inner wall, located below the lower baffle, of the storage tank, and a hydrogen outlet pipe penetrates through and is fixedly connected to the inner wall, located below the lower baffle, of the storage tank. According to the hydrogen storage tank, the upper baffle, the lower baffle, the piston piece, the hydrogen inlet pipe, the pressure gauge, the high-pressure gas conveying pipe and the like are arranged, so that the piston piece is pushed to move after hydrogen enters the storage tank, other gas above the piston piece is pressed, the pressure of the gas is measured through the pressure gauge, and the effect of guaranteeing safety while pressure measurement is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to photovoltaic hydrogen production field especially relates to a photovoltaic hydrogen production pressure detection device. BACKGROUND

[0002] Photovoltaic hydrogen production is a kind of clean energy production mode using solar power generation and producing hydrogen by electrolytic water technology, it converts solar energy into electric energy, then uses electric energy to drive electrolytic water process to produce hydrogen, has clean environmental protection, energy conversion efficiency is high, easy to store and transport etc.

[0003] Through the retrieval, China patent publication No. CN211824851U discloses a kind of, including pressure gauge, shunt explosion-proof pipe, first high-pressure hose, second high-pressure hose, first air inlet, second air inlet and hydrogen production barrel, the shunt explosion-proof pipe is located at the bottom of the pressure gauge, the first high-pressure hose and the second high-pressure hose are located inside the hydrogen production barrel, the first air inlet is located at the bottom of the first high-pressure hose, the second air inlet is located at the bottom of the second high-pressure hose, the hydrogen production barrel includes feed inlet and exhaust port, the feed inlet is located at one side of the hydrogen production barrel, the exhaust port is located at the top of the hydrogen production barrel, the side of the feed inlet is equipped with feed valve, the side of the exhaust port is equipped with exhaust valve, the top of the hydrogen production barrel is equipped with pressure relief cover.The above-mentioned application file not only has the effect of hydrogen pressure in hydrogen production device real-time detection, but also has the effect of facilitating pressure reduction and pressure stability.

[0004] The above-mentioned application file can achieve the effect of testing hydrogen pressure, but in the process of actual use, since the first high-pressure hose and the second high-pressure hose at the bottom of the pressure gauge are directly contacted with hydrogen, when the staff maintains the pressure gauge, hydrogen in the hose is easy to leak, and since hydrogen has the nature of flammable and explosive, if the staff does not do well in protection when maintaining the equipment, it is easy to cause danger, at the same time, when the pressure in the tank is too large, part of the gas needs to be discharged, by opening the pressure relief cover, hydrogen is also easy to leak and cause danger, therefore, a photovoltaic hydrogen production pressure detection device is proposed to solve the above-mentioned problems. UTILITY MODEL CONTENTS

[0005] In order to make up for the above shortcomings, the utility model provides a kind of photovoltaic hydrogen production pressure detection device, aims at improving the problem that it is easy to cause danger due to hydrogen leakage in the process of maintaining the equipment in prior art.

[0006] In order to achieve the above object, the utility model discloses the following technical scheme: a photovoltaic hydrogen production pressure detection device, including the storage tank, the inner wall piston of storage tank is connected with piston sheet, the inner wall fixedly connected with upper baffle of storage tank is above piston sheet, the inner wall fixedly connected with lower baffle of storage tank is below piston sheet, the top of storage tank is provided with pressure gauge, the bottom of pressure gauge is provided with high pressure gas pipe, the inner wall of storage tank is penetrated and fixedly connected with hydrogen inlet pipe below lower baffle, the inner wall of storage tank is penetrated and fixedly connected with hydrogen outlet pipe below lower baffle, the inner wall of storage tank is penetrated and fixedly connected with air pipe above upper baffle, and the top of storage tank is provided with pressure reducing mechanism.

[0007] As a further description of the above technical solution:

[0008] The pressure reducing mechanism includes a pressure relief pipe, the inner wall of the pressure relief pipe is rotatably connected with a rotating pipe, the outer wall of the rotating pipe is fixedly connected with a spiral blade, the inner wall of the rotating pipe is provided with a sliding groove, the inner wall of the sliding groove is slidably connected with a sliding sheet, the outer wall of the sliding sheet is fixedly connected with a control rod, and the outer part of the control rod and the inner part of the pressure relief pipe are jointly provided with a locking assembly.

[0009] As a further description of the above technical solution:

[0010] The locking assembly includes a control groove one, the control groove one is provided in the inner wall of the bottom of the pressure relief pipe, the inner wall of the control groove one is slidably connected with a sliding plate, the top end of the sliding plate is fixedly connected with the bottom end of the control rod, the inner wall of the sliding plate is penetrated and slidably connected with a sliding rod, the bottom end of the sliding rod is fixedly connected with a rotating plate, the bottom end of the rotating plate is rotatably connected with the inner wall of the control groove one, the bottom end of the rotating plate is elastically connected with the bottom end of the sliding plate through a spring, and the locking assembly further includes a control groove two.

[0011] As a further description of the above technical solution:

[0012] The outer wall of the pressure relief pipe is penetrated and fixedly connected with the inner wall of the storage tank, the bottom end of the pressure relief pipe is provided with a hole communicating with the inside of the storage tank, the top end of the pressure relief pipe is provided with a hole communicating with the outside, and the inside of the pressure relief pipe is provided with a removable plug.

[0013] As a further description of the above technical solution:

[0014] The shape of the spiral blade is spiral, and the outer side of the spiral blade is provided with a rubber material coating.

[0015] As a further description of the above technical solution:

[0016] The card plate is arranged above the tine plate, the bottom end of the card plate is provided with a card tooth with a pointed end, and the top end of the tine plate is provided with a card tooth matched with the shape of the card plate.

[0017] Further description of the above technical solution:

[0018] The bottom end of the high-pressure gas conveying pipe is arranged above the upper baffle, and the outer wall of the piston sheet is provided with a rubber coating.

[0019] Further description of the above technical solution:

[0020] The number of the slide rods is multiple, and the multiple slide rods are arranged in a circumferential array at the edge of the rotating plate.

[0021] The utility model has the advantages of the following:

[0022] 1. In the utility model, through the arrangement of the upper baffle, the lower baffle, the piston sheet, the hydrogen inlet pipe, the pressure gauge and the high-pressure gas conveying pipe, the piston sheet is ensured to move upwards under the principle of constant gas pressure after hydrogen enters the storage tank, so that other gases above the piston sheet are pressed and their pressure is measured by the pressure gauge, thereby ensuring that no danger is caused by hydrogen in the pipeline during maintenance of the pressure gauge, and the effect of pressure measurement and safety guarantee is achieved.

[0023] 2. In the utility model, through the arrangement of the rotating pipe, the spiral blade, the sliding sheet and the control rod, when the equipment needs to be deflated, the spiral blade is ensured to rotate by rotating the control rod, so that other gases in the storage tank and above the piston sheet can be slowly moved outward under the driving of the spiral blade, the pressure in the storage tank is well controlled, and no accident is caused by rapid pressure change. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a schematic diagram of the three-dimensional structure of the overall structure in the utility model;

[0025] Figure 2 It is a schematic diagram of the three-dimensional structure of the overall structure in the utility model;

[0026] Figure 3 It is a schematic diagram of the three-dimensional structure of the overall structure in the utility model;

[0027] Figure 4 It is a schematic diagram of the three-dimensional structure of the overall structure in the utility model;

[0028] Figure 5 It is a schematic diagram of the three-dimensional structure of the overall structure in the utility model;

[0029] Figure 6 It is the three-dimensional structure section view schematic diagram of the card plate, the tine plate, the control rod and the rotating pipe in the utility model.

[0030] Legend:

[0031] 1, storage tank; 2, piston sheet; 3, upper baffle; 4, lower baffle; 5, pressure gauge; 6, high-pressure gas pipe; 7, hydrogen inlet pipe; 8, hydrogen outlet pipe; 9, vent pipe; 10, pressure reducing mechanism; 101, pressure relief pipe; 102, rotating pipe; 103, spiral blade; 104, sliding groove; 105, sliding sheet; 106, control rod; 107, locking assembly; 171, control groove one; 172, sliding plate; 173, sliding rod; 174, rotating plate; 175, spring; 176, control groove two; 177, card plate; 178, tine plate. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0033] Reference Figure 1 - Figure 3 An embodiment provided by the utility model: a photovoltaic hydrogen production pressure detection device, including storage tank 1, the inside of storage tank 1 is provided with a hollow, and the hollow part of storage tank 1 is shaped as a cylinder, the inner wall of storage tank 1 is connected with piston sheet 2, the outer wall of piston sheet 2 is provided with rubber coating, through the setting of piston sheet 2, ensure that the outer wall of piston sheet 2 can be attached to the inner wall of storage tank 1, so as to ensure that the gas above and below piston sheet 2 is not mixed, the inside of storage tank 1 above piston sheet 2 is filled with other harmless gas such as helium, the inner wall of storage tank 1 above piston sheet 2 is fixedly connected with upper baffle 3, the shape of upper baffle 3 is annular, the inner wall of storage tank 1 below piston sheet 2 is fixedly connected with lower baffle 4, the shape of lower baffle 4 is also annular, through the setting of the shape of upper baffle 3 and lower baffle 4, ensure that the highest and lowest positions of piston sheet 2 can be fixed, at the same time, ensure that the gas in the inside of storage tank 1 can flow smoothly.

[0034] Reference Figure 1 - Figure 3, the top of the storage tank 1 is provided with a pressure gauge 5, by setting the position of the upper baffle 3, can ensure that when all the gas in the storage tank 1 is pushed to the upper surface of the piston sheet 2, and the upper surface of the piston sheet 2 is in contact with the lower surface of the upper baffle 3, its pressure exceeds the maximum pressure that the storage tank 1 can withstand, that is, by controlling the position of the upper baffle 3, it can be ensured that the piston sheet 2 does not contact the upper baffle 3 before the piston sheet 2, that is, the pressure is measured by the reading of the pressure gauge 5, so as to intervene artificially, and the reading error caused by the piston sheet 2 cannot be moved after the piston sheet 2 contacts the lower surface of the upper baffle 3. The bottom of the pressure gauge 5 is provided with a high-pressure gas pipe 6. The gas can enter the pressure measuring area of the pressure gauge 5 through the high-pressure gas pipe 6, and the reading is displayed through the area outside the storage tank 1. The existing force gauge can achieve this effect when in use, so the reason is not explained here. The bottom of the high-pressure gas pipe 6 is arranged above the upper baffle 3. By setting the lowest position of the high-pressure gas pipe 6, it is ensured that the normal use of the high-pressure gas pipe 6 will not be affected during the movement of the piston sheet 2.

[0035] Refer to Figure 1 - Figure 3 , the inner wall below the lower baffle 4 of the storage tank 1 is through and fixedly connected with the hydrogen inlet pipe 7, the inside of the hydrogen inlet pipe 7 is provided with a valve, the inner wall below the lower baffle 4 of the storage tank 1 is through and fixedly connected with the hydrogen outlet pipe 8, the inside of the hydrogen outlet pipe 8 is provided with a valve, the inner wall above the upper baffle 3 of the storage tank 1 is through and fixedly connected with the air pipe 9, the inside of the air pipe 9 is provided with a valve.

[0036] Refer to Figure 4 - Figure 6 , the top of the storage tank 1 is provided with a pressure relief mechanism 10, the pressure relief mechanism 10 includes a pressure relief pipe 101, the outer wall of the pressure relief pipe 101 is through and fixedly connected with the inner wall of the storage tank 1, the bottom end of the pressure relief pipe 101 is in the same plane with the upper inner wall of the storage tank 1, the bottom end of the pressure relief pipe 101 is provided with a hole communicating with the inside of the storage tank 1, the top end of the pressure relief pipe 101 is provided with a hole communicating with the outside, and the inside of the pressure relief pipe 101 is provided with a removable plug. By setting the plug, it can be ensured that when the gas pressure in the storage tank 1 reaches a specified value, the plug will be extruded and separated due to excessive gas pressure, so as to prevent the storage tank 1 from bursting and ensure the safety of the equipment and the workers.

[0037] Refer to Figure 4 - Figure 6The inner wall of the pressure relief pipe 101 is rotationally connected with a rotating pipe 102, the outer wall of the rotating pipe 102 is fixedly connected with a spiral blade 103, the spiral blade 103 is arranged, so that the gas below the equipment can be discharged from the opening at the top end of the pressure relief pipe 101 after the rotation of the spiral blade 103, at the same time, since the gas needs to rotate at the gap of the spiral blade 103 when discharging the pressure relief pipe 101, when the plug in the hole at the top end of the pressure relief pipe 101 falls out, the flow rate of the gas is ensured to be slow, thereby avoiding accidents caused by large changes in the pressure in the storage tank 1, the shape of the spiral blade 103 is spiral, and the outer side of the spiral blade 103 is provided with a rubber coating, through the material setting of the edge part of the spiral blade 103, it is ensured that the outer wall of the spiral blade 103 can be attached to the inner wall of the pressure relief pipe 101, the inner wall of the rotating pipe 102 is provided with a sliding groove 104, the inner wall of the sliding groove 104 is slidably connected with a sliding piece 105, the outer wall of the sliding piece 105 is fixedly connected with a control rod 106, and the control rod 106 can move up and down relative to the rotating pipe 102.

[0038] With reference to Figure 4 - Figure 6 The outer part of the control rod 106 and the inner part of the pressure relief pipe 101 are provided with a locking assembly 107, the locking assembly 107 comprises a control groove 171, the control groove 171 is arranged in the inner wall of the bottom of the pressure relief pipe 101, the inner wall of the control groove 171 is slidably connected with a sliding plate 172, the diameter of the sliding plate 172 is greater than the diameter of the control rod 106, the top end of the sliding plate 172 is fixedly connected with the bottom end of the control rod 106, the inner wall of the sliding plate 172 is penetrated and slidably connected with a slide rod 173, the sliding direction of the sliding plate 172 relative to the slide rod 173 is up and down sliding, the bottom end of the slide rod 173 is fixedly connected with a rotating plate 174, the number of the slide rod 173 is set to be multiple, and the multiple slide rods 173 are arranged in a circumferential array at the edge of the rotating plate 174, through the arrangement of the slide rod 173, it is ensured that the rotating plate 174 can be driven to rotate synchronously with the sliding plate 172 when the sliding plate 172 rotates.

[0039] With reference to Figure 4 - Figure 6The bottom end of the rotating plate 174 is rotatably connected with the inner wall of the control groove one 171, and the bottom end of the rotating plate 174 is elastically connected with the bottom end of the sliding plate 172 through the spring 175, one end of the spring 175 is fixedly connected with the bottom end of the rotating plate 174, and the other end of the spring 175 is fixedly connected with the bottom end of the sliding plate 172, and the locking assembly 107 further comprises a control groove two 176, which is arranged in the inner wall of the top of the pressure relief pipe 101, and the inner wall of the control groove two 176 is fixedly connected with a clamping plate 177, and the outer wall of the control rod 106 is fixedly connected with a sharp tooth plate 178, the clamping plate 177 is arranged above the sharp tooth plate 178, the bottom end of the clamping plate 177 is provided with a clamping tooth with a sharp end, and the top end of the sharp tooth plate 178 is provided with a clamping tooth matched with the clamping plate 177, through the arrangement of the clamping tooth, it is ensured that when the clamping tooth of the clamping plate 177 contacts with the clamping tooth of the sharp tooth plate 178, the sharp tooth plate 178 cannot rotate, so that the control rod 106 is not easy to rotate due to the gas extrusion of the inclined surface of the spiral blade 103 under the condition of non-artificial control.

[0040] Working principle: in use, when the hydrogen gas is introduced through the hydrogen inlet pipe 7, the piston sheet 2 moves upward due to the increase of the pressure below the piston sheet 2, so as to keep the gas pressure balance.

[0041] During the upward movement of the piston sheet 2, the gas above the piston sheet 2 in the storage tank 1 enters the high-pressure gas conveying pipe 6, so that the reading on the surface of the pressure gauge 5 changes, so that the worker can indirectly measure the pressure of the hydrogen gas in the storage tank 1.

[0042] If the worker finds that the amount of hydrogen gas introduced is too large but within a controllable range through the pressure gauge 5 during the introduction of hydrogen gas, the worker first removes the plug in the hole above the pressure relief pipe 101, and then presses the control rod 106 downward.

[0043] When the control rod 106 moves downward, the clamping plate 177 is separated from the sharp surface of the sharp tooth plate 178, at this time the worker can smoothly rotate the control rod 106.

[0044] Thereafter, the worker rotates the control rod 106, so that the control rod 106 drives the rotating pipe 102 and the spiral blade 103 to rotate synchronously, so that the gas above the piston sheet 2 is discharged through the hole above the pressure relief pipe 101, so as to ensure that the pressure inside the storage tank 1 decreases.

[0045] If the hydrogen gas causes a large pressure, but the staff fails to find it in time, when the pressure is too large, the plug in the hole above the pressure relief pipe 101 moves outward and falls out under the action of the pressure, and at this time the gas above the piston sheet 2 passes through the pressure relief pipe 101 and is discharged, at this time the spiral blade 103 cannot rotate, so when the gas is discharged, it needs to do spiral motion around the spiral blade 103, so the gas will not be discharged quickly, which ensures that the hydrogen gas is not easy to impact the inner wall of the storage tank 1 under high pressure due to sudden pressure change, and ensures the safety of the equipment and the staff.

[0046] Finally, it should be pointed out that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application are described in detail, for those skilled in the art, it still can be modified, or part of the technical features of the equivalent replacement, within the spirit and principles of the present application, any modification, equivalent replacement, improvement, etc., should be included in the scope of protection of the present application.

Claims

1. A photovoltaic hydrogen generation pressure detection device comprising a storage tank (1), characterized in that: The inner wall of the storage tank (1) is connected with a piston sheet (2), the inner wall of the storage tank (1) above the piston sheet (2) is fixedly connected with an upper baffle (3), the inner wall of the storage tank (1) below the piston sheet (2) is fixedly connected with a lower baffle (4), the top end of the storage tank (1) is provided with a pressure gauge (5), the bottom end of the pressure gauge (5) is provided with a high-pressure gas conveying pipe (6), the inner wall of the storage tank (1) below the lower baffle (4) is penetrated and fixedly connected with a hydrogen inlet pipe (7), the inner wall of the storage tank (1) below the lower baffle (4) is penetrated and fixedly connected with a hydrogen outlet pipe (8), the inner wall of the storage tank (1) above the upper baffle (3) is penetrated and fixedly connected with a ventilation pipe (9), and the top of the storage tank (1) is provided with a pressure relief mechanism (10).

2. The photovoltaic hydrogen generation pressure detection device according to claim 1, wherein: The pressure relief mechanism (10) comprises a pressure relief pipe (101), the inner wall of the pressure relief pipe (101) is rotatably connected with a rotating pipe (102), the outer wall of the rotating pipe (102) is fixedly connected with a spiral blade (103), the inner wall of the rotating pipe (102) is provided with a sliding groove (104), the inner wall of the sliding groove (104) is slidably connected with a sliding sheet (105), the outer wall of the sliding sheet (105) is fixedly connected with a control rod (106), and the outer part of the control rod (106) and the inner part of the pressure relief pipe (101) are provided with a locking assembly (107) together.

3. The photovoltaic hydrogen generation pressure detection device according to claim 2, wherein: The locking assembly (107) comprises a control groove I (171) which is formed in the inner wall of the bottom of the pressure relief pipe (101), the inner wall of the control groove I (171) is slidably connected with a sliding plate (172), the top end of the sliding plate (172) is fixedly connected with the bottom end of the control rod (106), the inner wall of the sliding plate (172) is penetrated and slidably connected with a sliding rod (173), the bottom end of the sliding rod (173) is fixedly connected with a rotating plate (174), the bottom end of the rotating plate (174) is rotatably connected with the inner wall of the control groove I (171), the bottom end of the rotating plate (174) is elastically connected with the bottom end of the sliding plate (172) through a spring (175), and the locking assembly (107) further comprises a control groove II (176) which is formed in the inner wall of the top of the pressure relief pipe (101), the inner wall of the control groove II (176) is fixedly connected with a clamping plate (177), and the outer wall of the control rod (106) is fixedly connected with a sharp tooth plate (178).

4. The photovoltaic hydrogen generation pressure detection device according to claim 2, wherein: The outer wall of the pressure relief pipe (101) is penetrated and fixedly connected with the inner wall of the storage tank (1), the bottom end of the pressure relief pipe (101) is provided with a hole which is in communication with the inside of the storage tank (1), the top end of the pressure relief pipe (101) is provided with a hole which is in communication with the outside, and the inside of the pressure relief pipe (101) is provided with a removable plug.

5. The photovoltaic hydrogen generation pressure detection device according to claim 2, wherein: The spiral blade (103) is spiral-shaped, and the outer side of the spiral blade (103) is provided with a rubber coating.

6. The photovoltaic hydrogen generation pressure detection device according to claim 3, wherein: The card plate (177) is arranged above the tine plate (178), the bottom end of the card plate (177) is provided with a card tooth with a pointed end, and the top end of the tine plate (178) is provided with a card tooth matched with the shape of the card plate (177).

7. The photovoltaic hydrogen generation pressure detection device according to claim 1, wherein: The bottom end of the high-pressure gas conveying pipe (6) is arranged above the upper baffle (3), and the outer wall of the piston sheet (2) is provided with a rubber coating.

8. The photovoltaic hydrogen generation pressure detection device according to claim 3, wherein: The number of the slide rods (173) is multiple, and the multiple slide rods (173) are arranged in a circumferential array at the edge of the rotating plate (174).

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