Photovoltaic hydrogen production remote hydrogen leakage safety detection device

Abstract

The application belongs to the technical field of gas leakage detection, and particularly relates to a photovoltaic hydrogen production remote hydrogen leakage safety detection device, which comprises two track plates, connecting blocks fixedly connected to both sides of the inner circle of the two track plates, and adjacent two connecting blocks fixedly connected through fastening bolts, and a surrounding detection assembly. The surrounding detection assembly comprises a surrounding groove arranged on one side of the track plate, a sliding block slidingly inserted into the inner side of the surrounding groove, a cylinder two fixedly connected to one side of the sliding block, a connecting plate fixedly connected to the piston end of the cylinder two, a cover fixedly connected to one side of the connecting plate, and a gas sensor arranged on one side of the inner wall of the cover. The surrounding detection assembly is used, when the gas sensor detects a gas signal, the sliding block stops moving. At this time, the position where the cover stays is the inclined leakage position, so that the staff can quickly position the leakage position of the flange plate sealing surface, and the subsequent repair efficiency and accuracy are improved.

Description

Technical Field

[0001] This invention belongs to the field of gas leak detection technology, specifically a remote hydrogen leak safety detection device for photovoltaic hydrogen production. Background Technology

[0002] Hydrogen is a highly flammable gas at room temperature and pressure. It is colorless, transparent, odorless, tasteless, and poorly soluble in water. Hydrogen energy is a secondary energy source. In the long run, producing hydrogen from water is the most promising method, as the raw materials are inexhaustible, and the energy released by burning hydrogen is replaced by water, causing no environmental pollution. Photovoltaic hydrogen production is one method of hydrogen production. In the photovoltaic hydrogen production process, hydrogen is usually transported through pipelines connected by flanges. However, after long-term operation, the flanges may leak through the gaps in the connection due to aging of the sealing strips. Therefore, during routine factory inspections, the flanges are checked to monitor for hydrogen leaks.

[0003] Patent CN113959646B discloses a hydrogen pipeline connection leak detection device, comprising two semi-circular frames, two pipes, and a flange. The two semi-circular frames form a detection cover, and a limiting mechanism is mounted on the other end of both semi-circular frames. An arc-shaped sealing plate is mounted between two arc-shaped plates on the upper and lower sides. A fixing rod is slidably mounted inside the cavity, and the lower end of the fixing rod passes through an extension hole and is threadedly connected to a threaded hole. A fixing mechanism is mounted on both the left and right ends of the two arc-shaped sealing plates. This patent performs a wrapping detection on the flange, eliminating the need for personnel to use a detection probe to circle the flange for detection. Moreover, when a hydrogen leak is detected, the flange can be immediately wrapped to block the leak. Without affecting the detection of the next flange, the damaged flange can be wrapped in an emergency to prevent continuous hydrogen leakage and potential safety accidents.

[0004] However, the above technical solutions still have the following shortcomings in practical applications:

[0005] A detection cover is formed by two semi-circular frames and two curved plates, completely enclosing the flange. When hydrogen leaks from the flange sealing surface, the leaked hydrogen fills the inside of the detection cover, and the detection sensor immediately collects the signal and transmits it to the control system in real time. The control system analyzes the hydrogen concentration, and if the concentration exceeds a preset threshold, an alarm is issued through the display screen.

[0006] However, after a hydrogen leak is detected at the flange, it is usually necessary to locate and repair the leak point. The above-mentioned technical solution can only determine whether a leak exists, but it is difficult to accurately determine the specific location of the leak, thus affecting the efficiency and accuracy of subsequent repair work. Summary of the Invention

[0007] To overcome the shortcomings of existing technologies and solve at least one of the technical problems mentioned in the background art, the present invention proposes a remote hydrogen leakage safety detection device for photovoltaic hydrogen production.

[0008] The technical solution adopted by the present invention to solve its technical problem is: a photovoltaic hydrogen production remote hydrogen leakage safety detection device, including two track plates, with connecting blocks fixedly connected to both sides of the inner ring of the two track plates, and two adjacent connecting blocks being fixedly connected by fastening bolts, including a ring-type detection component;

[0009] The surround detection assembly includes a surround groove disposed on one side of the track plate, a slider is slidably inserted into the inside of the surround groove, a second cylinder is fixedly connected to one side of the slider, a connecting plate is fixedly connected to the piston end of the second cylinder, a cover is fixedly connected to one side of the connecting plate, and a gas sensor is disposed on one side of the inner wall of the cover.

[0010] Preferably, it includes a positioning component;

[0011] The positioning component includes a cylinder fixedly connected to one side of the track plate, and a positioning block is fixedly connected to the piston end of the cylinder.

[0012] Preferably, a gear is rotatably provided on one side of the slider, and a toothed block is provided on the outer ring of the track plate, with the gear meshing with the toothed block on the outer ring of the track plate.

[0013] Preferably, a motor is fixedly connected to one side of the slider, and the output end of the motor is fixedly connected to a gear.

[0014] Preferably, a sealing gasket is fixedly connected to one side of the cover, and a rotating handle is fixedly connected to one end of the fastening bolt.

[0015] Preferably, it also includes a pressure-driven marking component;

[0016] The pressure-driven marking assembly includes a connecting pipe fixedly connected to one side of a connecting plate. One end of the connecting pipe is connected to one side of the cover, and an air bladder is connected to one end of the connecting pipe. A sliding rod is slidably connected to one side of the connecting plate, and a marker is slidably connected to one end of the sliding rod.

[0017] Preferably, an air outlet is provided on one side of the connecting pipe, and a solenoid valve is provided on the air outlet.

[0018] Preferably, a fixing plate is fixedly connected to one side of the connecting plate, a rotating shaft is rotatably provided on one side of the fixing plate, a transmission plate is fixedly sleeved on the rotating shaft, a sliding groove is provided on one side of the transmission plate, and a guide rod is fixedly connected to one side of the sliding rod, the guide rod slidingly passing through the sliding groove.

[0019] Preferably, a torsion spring is fitted on one side of the rotating shaft, with one end of the torsion spring fixedly connected to the transmission plate and the other end fixedly connected to the fixing plate.

[0020] Preferably, a spring is fitted on one side of the marker, one end of which is fixedly connected to a slide rod, and the other end is fixedly connected to the end of the marker.

[0021] The beneficial effects of this invention are as follows:

[0022] 1. The photovoltaic hydrogen production remote hydrogen leak safety detection device of this invention utilizes a surround detection component, combining two track plates with connecting blocks to form a complete circular track. The two track plates are then fitted onto the pipe to be inspected. A slider is driven to move within the circular track, causing the sealing gasket to also move in a circular motion against the flange edge. If no leak occurs at the flange sealing surface, no hydrogen enters the enclosure, and the gas sensor will not detect a gas signal. If a leak occurs at a point on the flange sealing surface, hydrogen will enter the enclosure and be detected by the gas sensor when the enclosure moves to that position. When the gas sensor detects a gas signal, the slider stops moving. The position where the enclosure stops at this point indicates the location of the leak, facilitating quick location of the leak on the flange sealing surface and improving the efficiency and accuracy of subsequent repairs.

[0023] 2. The photovoltaic hydrogen production remote hydrogen leak safety detection device of this invention utilizes a pressure-driven marking component. Whenever the cover stops at a leak point, hydrogen gas moves into the gasbag, causing it to inflate. The inflated gasbag presses against one side of the transmission plate, causing it to rotate. Simultaneously, a torsion spring deforms due to the rotation of the shaft, moving a guide rod via a slide rail. This guide rod then moves a marker pen, bringing the pen tip close to the edge of the flange sealing surface. Under the action of the spring, the pen tip tightly adheres to the edge of the flange sealing surface, leaving an imprint. Subsequently, the solenoid valve opens, releasing the gas from the gasbag, causing it to return to its original position. The pen tip moves away from the flange, and the cover continues to move, repeating the above operation. By briefly stopping at the leak point, the marker pen marks the edge of the flange. During subsequent repairs, workers can locate multiple leak points by observing the marks left by the marker pen, thus further facilitating the smooth progress of repair work. Attached Figure Description

[0024] The invention will now be further described with reference to the accompanying drawings.

[0025] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0026] Figure 2 This is a three-dimensional structural schematic diagram of the present invention from another perspective;

[0027] Figure 3 yes Figure 2 Enlarged view of a portion of point A in the middle;

[0028] Figure 4 This is a schematic diagram of the three-dimensional structure at the slider.

[0029] Figure 5 This is a schematic diagram of the internal structure of the cover;

[0030] Figure 6 This is a schematic diagram of the three-dimensional structure at the connecting plate.

[0031] Figure 7 yes Figure 6 Enlarged view of a section at point B in the middle;

[0032] Figure 8 This is a schematic diagram of the three-dimensional structure of the marker.

[0033] In the diagram: 1. Track plate; 2. Cylinder 1; 3. Positioning block; 4. Rotating handle; 5. Slider; 6. Fastening bolt; 7. Gear; 8. Motor; 9. Cylinder 2; 10. Connecting plate; 11. Cover; 12. Sealing gasket; 13. Fixing plate; 14. Transmission plate; 15. Slide rod; 16. Rotating shaft; 17. Airbag; 18. Air outlet; 19. Solenoid valve; 20. Connecting pipe; 21. Marker; 22. Spring; 23. Torsion spring; 24. Guide rod; 25. Connecting block; 26. Circulating groove; 27. Gas sensor; 28. Slide groove. Detailed Implementation

[0034] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] Please refer to Figures 1-8 The present invention provides a technical solution: a photovoltaic hydrogen production remote hydrogen leakage safety detection device, including two track plates 1, with connecting blocks 25 fixedly connected to both sides of the inner ring of the two track plates 1, and two adjacent connecting blocks 25 being fixedly connected by fastening bolts 6, including a ring-type detection component;

[0036] The surround detection assembly includes a surround groove 26 disposed on one side of the track plate 1. A slider 5 is slidably inserted into the inside of the surround groove 26. A cylinder 9 is fixedly connected to one side of the slider 5. A connecting plate 10 is fixedly connected to the piston end of the cylinder 9. A cover 11 is fixedly connected to one side of the connecting plate 10. A gas sensor 27 is disposed on one side of the inner wall of the cover 11.

[0037] In this embodiment, as Figures 3-5 As shown, it includes a positioning component;

[0038] The positioning assembly includes a cylinder 2 fixedly connected to one side of the track plate 1, and a positioning block 3 fixedly connected to the piston end of the cylinder 2.

[0039] A gear 7 is rotatably mounted on one side of the slider 5, and a toothed block is mounted on the outer ring of the track plate 1, with the gear 7 meshing with the toothed block on the outer ring of the track plate 1.

[0040] A motor 8 is fixedly connected to one side of the slider 5, and the output end of the motor 8 is fixedly connected to the gear 7.

[0041] A sealing gasket 12 is fixedly connected to one side of the cover 11, and a rotating handle 4 is fixedly connected to one end of the fastening bolt 6.

[0042] Specifically, in existing technologies, a detection cover is often composed of two semi-circular frames and two arc-shaped plates, completely enclosing the flange. When hydrogen leaks from the flange sealing surface, the leaked hydrogen fills the inside of the detection cover, and the detection sensor immediately collects the signal and transmits it to the control system in real time. The control system analyzes the hydrogen concentration, and if the concentration exceeds a preset threshold, an alarm is issued through the display screen.

[0043] However, after a hydrogen leak is detected at the flange, it is usually necessary to locate and repair the leak point. The above-mentioned technical solution can only determine whether a leak exists, but it is difficult to accurately determine the specific location of the leak, thus affecting the efficiency and accuracy of subsequent repair work.

[0044] Therefore, in order to solve the above problems, the working principle of this embodiment is as follows:

[0045] First, the two track plates 1 are combined by fitting them together with connecting blocks 25, so that the surrounding grooves 26 of the two track plates 1 are joined to form a complete circular track. Then, the two track plates 1 are placed on the pipe to be inspected, and then the fastening bolts 6 are rotated by rotating handle 4 to make the two track plates 1 form a stable connection.

[0046] Subsequently, two cylinders 2 are activated simultaneously, using cylinder 2 to move the positioning block 3, causing it to fit against the pipe wall. This fixes the two track plates 1 to the pipe. Then, cylinder 9 moves the connecting plate 10 closer to the flange edge until the sealing gasket 12 is tightly fitted against the flange edge. Motor 8 then drives gear 7 to rotate, causing slider 5 to move in a circular motion along the surrounding groove 26. Since the two track plates 1 are identical in size, slider 5 can move smoothly within the circular track after they are joined. The sealing gasket 12 will also fit against the flange edge and move in a circular motion. If there is no leakage at the flange sealing surface, no hydrogen enters the enclosure 11, and gas sensor 27 will not detect a gas signal. If there is a leak at a point on the flange sealing surface, hydrogen will enter the enclosure 11 when it moves to that position and be detected by gas sensor 27. When gas sensor 27 detects a gas signal, motor 8 stops working, and slider 5 stops moving. At this point, the position where the cover 11 stops is the tilted leak location, which makes it easier for staff to quickly locate the leak location on the flange sealing surface, thereby improving the efficiency and accuracy of subsequent repairs.

[0047] In this embodiment, as Figure 4 , Figures 6-8 As shown, it also includes a pressure-driven marking assembly;

[0048] The pressure-driven marking assembly includes a connecting pipe 20 fixedly connected to one side of the connecting plate 10. One end of the connecting pipe 20 is connected to one side of the cover 11, and one end of the connecting pipe 20 is connected to an airbag 17. A slide rod 15 is slidably connected to one side of the connecting plate 10, and a marker 21 is slidably connected to one end of the slide rod 15.

[0049] An air outlet 18 is provided on one side of the connecting pipe 20, and a solenoid valve 19 is provided on the air outlet 18.

[0050] A fixed plate 13 is fixedly connected to one side of the connecting plate 10. A rotating shaft 16 is rotatably provided on one side of the fixed plate 13. A transmission plate 14 is fixedly sleeved on the rotating shaft 16. A sliding groove 28 is provided on one side of the transmission plate 14. A guide rod 24 is fixedly connected to one side of the sliding rod 15. The guide rod 24 slides through the sliding groove 28.

[0051] A torsion spring 23 is fitted on one side of the rotating shaft 16. One end of the torsion spring 23 is fixedly connected to the transmission plate 14, and the other end is fixedly connected to the fixing plate 13.

[0052] A spring 22 is fitted on one side of the marker 21. One end of the spring 22 is fixedly connected to the slide bar 15, and the other end is fixedly connected to the end of the marker 21.

[0053] Specifically, in the above embodiments, although the location of hydrogen leaks can be determined by observing the position of the cover 11, in some cases, there may be multiple leak points on the flange sealing surface, while the cover 11 can only stay at one leak point, making it impossible to locate multiple leak points simultaneously, which will still affect subsequent repair work.

[0054] Therefore, in order to solve the above problems, the working principle of this embodiment is as follows:

[0055] Whenever the cover 11 stops at the leak point, hydrogen gas moves into the gasbag 17, causing it to inflate. The inflated gasbag 17 presses against one side of the transmission plate 14, causing it to rotate. Simultaneously, the torsion spring 23 deforms due to the rotation of the shaft 16, which in turn moves the guide rod 24 via the slide groove 28. The slide rod 15 then moves the marker 21, bringing its tip close to the edge of the flange sealing surface. Under the action of the spring 22, the tip fits tightly against the edge of the flange sealing surface, leaving a mark. Subsequently, the solenoid valve 19 opens, releasing the gas from the gasbag 17, which then returns to its original position, moving the marker away from the flange. The cover 11 then continues to move, repeating the above operation. By briefly stopping at the leak point, the cover 11 marks the edge of the flange with the marker 21. During subsequent repairs, workers can locate multiple leak points by observing the marks left by the marker 21, thus facilitating the smooth progress of the repair work.

[0056] Working principle: First, the two track plates 1 are combined by fitting them together with connecting blocks 25, so that the surrounding grooves 26 of the two track plates 1 are joined to form a complete circular track. Then, the two track plates 1 are placed on the pipe to be inspected, and then the fastening bolts 6 are rotated by rotating handle 4 to make the two track plates 1 form a stable connection.

[0057] Subsequently, two cylinders 2 are activated simultaneously, using cylinder 2 to move the positioning block 3, causing it to fit against the pipe wall. This fixes the two track plates 1 to the pipe. Then, cylinder 9 moves the connecting plate 10 closer to the flange edge until the sealing gasket 12 is tightly fitted against the flange edge. Motor 8 then drives gear 7 to rotate, causing slider 5 to move in a circular motion along the surrounding groove 26. Since the two track plates 1 are identical in size, slider 5 can move smoothly within the circular track after they are joined. The sealing gasket 12 will also fit against the flange edge and move in a circular motion. If there is no leakage at the flange sealing surface, no hydrogen enters the enclosure 11, and gas sensor 27 will not detect a gas signal. If there is a leak at a point on the flange sealing surface, hydrogen will enter the enclosure 11 when it moves to that position and be detected by gas sensor 27. When gas sensor 27 detects a gas signal, motor 8 stops working, and slider 5 stops moving. At this point, the position where the cover 11 stops is the tilted leak location, which makes it easier for staff to quickly locate the leak location on the flange sealing surface, thereby improving the efficiency and accuracy of subsequent repairs.

[0058] Whenever the cover 11 stops at the leak point, hydrogen gas moves into the gasbag 17, causing it to inflate. The inflated gasbag 17 presses against one side of the transmission plate 14, causing it to rotate. Simultaneously, the torsion spring 23 deforms due to the rotation of the shaft 16, which in turn moves the guide rod 24 via the slide groove 28. The slide rod 15 then moves the marker 21, bringing its tip close to the edge of the flange sealing surface. Under the action of the spring 22, the tip fits tightly against the edge of the flange sealing surface, leaving a mark. Subsequently, the solenoid valve 19 opens, releasing the gas from the gasbag 17, which then returns to its original position, moving the marker away from the flange. The cover 11 then continues to move, repeating the above operation. By briefly stopping at the leak point, the cover 11 marks the edge of the flange with the marker 21. During subsequent repairs, workers can locate multiple leak points by observing the marks left by the marker 21, thus facilitating the smooth progress of the repair work.

[0059] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A remote hydrogen leak safety detection device for photovoltaic hydrogen production, comprising two track plates (1), wherein connecting blocks (25) are fixedly connected to both sides of the inner ring of the two track plates (1), and adjacent connecting blocks (25) are fixedly connected by fastening bolts (6), characterized in that: Including surround detection components; The surround detection assembly includes a surround groove (26) disposed on one side of the track plate (1), a slider (5) is slidably inserted into the inside of the surround groove (26), a cylinder (9) is fixedly connected to one side of the slider (5), a connecting plate (10) is fixedly connected to the piston end of the cylinder (9), a cover (11) is fixedly connected to one side of the connecting plate (10), and a gas sensor (27) is disposed on one side of the inner wall of the cover (11).

2. The photovoltaic hydrogen production remote hydrogen leakage safety detection device according to claim 1, characterized in that: Includes positioning components; The positioning component includes a cylinder (2) fixedly connected to one side of the track plate (1), and a positioning block (3) is fixedly connected to the piston end of the cylinder (2).

3. The remote hydrogen leak safety detection device for photovoltaic hydrogen production according to claim 1, characterized in that: A gear (7) is rotatably provided on one side of the slider (5), and a toothed block is provided on the outer ring of the track plate (1), and the gear (7) meshes with the toothed block on the outer ring of the track plate (1).

4. The remote hydrogen leak safety detection device for photovoltaic hydrogen production according to claim 3, characterized in that: A motor (8) is fixedly connected to one side of the slider (5), and the output end of the motor (8) is fixedly connected to the gear (7).

5. The remote hydrogen leak safety detection device for photovoltaic hydrogen production according to claim 1, characterized in that: A sealing gasket (12) is fixedly connected to one side of the cover (11), and a rotating handle (4) is fixedly connected to one end of the fastening bolt (6).

6. The remote hydrogen leak safety detection device for photovoltaic hydrogen production according to claim 1, characterized in that: It also includes pressure-driven marking components; The pressure-driven marking assembly includes a connecting pipe (20) fixedly connected to one side of the connecting plate (10). One end of the connecting pipe (20) is connected to one side of the cover (11), and one end of the connecting pipe (20) is connected to an airbag (17). A slide rod (15) is slidably connected to one side of the connecting plate (10), and a marker pen (21) is slidably connected to one end of the slide rod (15).

7. The remote hydrogen leak safety detection device for photovoltaic hydrogen production according to claim 6, characterized in that: An air outlet (18) is provided on one side of the connecting pipe (20), and a solenoid valve (19) is provided on the air outlet (18).

8. The remote hydrogen leak safety detection device for photovoltaic hydrogen production according to claim 6, characterized in that: A fixing plate (13) is fixedly connected to one side of the connecting plate (10). A rotating shaft (16) is rotatably provided on one side of the fixing plate (13). A transmission plate (14) is fixedly sleeved on the rotating shaft (16). A sliding groove (28) is provided on one side of the transmission plate (14). A guide rod (24) is fixedly connected to one side of the sliding rod (15). The guide rod (24) slides through the sliding groove (28).

9. The photovoltaic hydrogen production remote hydrogen leakage safety detection device according to claim 8, characterized in that: A torsion spring (23) is fitted on one side of the rotating shaft (16). One end of the torsion spring (23) is fixedly connected to the transmission plate (14), and the other end is fixedly connected to the fixing plate (13).

10. A remote hydrogen leak safety detection device for photovoltaic hydrogen production according to claim 6, characterized in that: A spring (22) is fitted on one side of the marker (21). One end of the spring (22) is fixedly connected to the slide bar (15), and the other end is fixedly connected to the end of the marker (21).

Images