A hydrogen energy storage pipeline leak rapid plugging and repairing device

Abstract

This invention discloses a rapid sealing and repair device for leaks in hydrogen storage pipelines, relating to the field of pipeline leak sealing. It includes a pressure detection unit and two sealing covers. The two sealing covers can be joined to surround the leaking part of the pipeline, forming a sealed containment chamber. The pressure detection unit is installed on the top of either sealing cover, with its detection end extending into the containment chamber to detect the pressure within the chamber. This invention uses bolts passing through the bolt holes of the upper and lower connecting parts to tightly lock the two opposing pipe-holding parts to the outside of the pipeline. Simultaneously, the two sealing covers are positioned on the outside of the pipeline joint. After the bolts are tightened, the sealing gaskets prevent hydrogen leakage from the component joint gaps. The arc-shaped sealing strip and the L-shaped sealing strip fit tightly against the outer wall of the pipeline, preventing hydrogen leakage from both ends, thus rapidly sealing the leaking part.

Description

Technical Field

[0001] This invention belongs to the field of pipeline leakage sealing, specifically relating to a rapid sealing and repair device for hydrogen energy storage pipeline leakage. Background Technology

[0002] Hydrogen energy storage, as an important technology in the field of clean energy storage, is increasingly widely used in scenarios such as new energy power generation and grid peak shaving. In hydrogen energy storage systems, pipelines and their joints are key components connecting various devices, and their sealing performance directly affects the safety and reliability of system operation.

[0003] In actual operation, hydrogen pipelines, especially at joints (such as flanges and threaded connections), are prone to developing micro-cracks or seal failures due to long-term exposure to complex conditions such as high pressure, vibration, temperature changes, and hydrogen embrittlement, leading to hydrogen leakage. Hydrogen has characteristics such as small molecules, high permeability, and flammability and explosiveness; once a leak occurs, it not only wastes energy but may also cause serious safety accidents.

[0004] Currently, dealing with pipeline leaks usually requires shutting down the system, depressurizing, and then disassembling, repairing, or replacing the leaking parts. This approach not only interrupts the normal operation of the hydrogen energy storage system, leading to energy supply disruptions and loss of peak-shaving capabilities, but also incurs significant downtime losses.

[0005] Currently, there is also a method of wrapping the leak point with sealing tape. However, due to the special shape of the joint, hydrogen can easily escape from the wrapped sealing tape under high pressure conditions, making it difficult to achieve the requirement of complete airtightness. In addition, it lacks real-time monitoring and alarm functions, and cannot continuously detect the sealing status after sealing, which poses a safety hazard.

[0006] Therefore, we propose a rapid sealing and repair device for hydrogen storage pipeline leaks to solve the above problems. Summary of the Invention

[0007] Currently, the method of wrapping leak points with sealing tape is limited by the special shape of the joint. Under high pressure, hydrogen can easily escape from the wrapped sealing tape, making it difficult to achieve complete airtightness. Furthermore, it lacks real-time monitoring and alarm functions, and cannot continuously detect the sealing status after sealing, posing a safety hazard. This invention provides a rapid sealing and repair device for hydrogen energy storage pipeline leaks.

[0008] The solution adopted by the present invention to solve its technical problem is: a rapid sealing and repair device for hydrogen energy storage pipeline leakage, including a pressure detection unit and two sealing covers, the two sealing covers can be connected to surround the pipeline leakage part to form a sealed containment chamber. A pressure detection unit is installed on top of any of the sealing covers, with its detection end extending into the receiving chamber for detecting the pressure in the receiving chamber; The sealing cover has pipe-holding parts at both ends. Sealing gaskets are installed on the mating surfaces of the sealing cover and the pipe-holding parts. The two pipe-holding parts that are opposite each other can be detachably installed on the outside of the pipe. Two sealing elements are provided on the inner side of the pipe-holding parts. The tube is provided with an injection joint and an exhaust hole, which are located between two annular seals.

[0009] Preferably, the tube-holding part has a semi-circular structure and is fitted to the outer surface of the pipe.

[0010] Preferably, both ends of the sealing cover and the tube-holding part extend outward to form a connecting part, and a bolt hole is opened in the connecting part. The same bolt is installed in the two corresponding bolt holes at the top and bottom to connect and fix the two opposite connecting parts at the top and bottom.

[0011] Preferably, the two sealing elements are an L-shaped sealing strip and an arc-shaped sealing strip, which are installed alternately on the clamping surface of the tube clamping part, wherein the folded part of the L-shaped sealing strip contacts the inner side of the sealing cover.

[0012] Preferably, the clamping surface of the tube-holding part has two arc-shaped grooves spaced apart.

[0013] Preferably, the two sealing elements are two inflatable sealing bladders, which are respectively disposed in two arc-shaped grooves. At least two connecting tubes for connecting the two inflatable sealing bladders are provided on the outside of the tube section. One of the sealing bladders is provided with a valve, and the outer end of the valve extends out of the tube section.

[0014] Preferably, the inflatable sealing bladder is made of an elastic material, which can fit tightly against the outer wall of the pipe after inflation.

[0015] Preferably, it also includes an inflation device, the inflation port of which is connected to the outer end of the valve for inflating the airtight bladder.

[0016] Preferably, the pressure detection unit is a pressure sensor.

[0017] Preferably, the device further includes an audible and visual alarm and a controller. The signal output terminal of the pressure sensor is electrically connected to the signal input terminal of the controller, and the alarm signal output terminal of the controller is electrically connected to the signal trigger terminal of the audible and visual alarm. The controller is used to output a trigger signal to the audible and visual alarm when the pressure signal exceeds a preset threshold, thereby driving the audible and visual alarm to issue an audible and visual alarm.

[0018] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention uses bolts to pass through the bolt holes of the upper and lower connecting parts to tightly lock the two opposing pipe clamps to the outside of the pipe. At the same time, two sealing covers are set on the outside of the pipe joint. After the bolts are tightened, the sealing gaskets can prevent hydrogen from leaking from the gaps in the component splicing. The arc-shaped sealing strip and the L-shaped sealing strip are tightly attached to the outer wall of the pipe to prevent hydrogen from leaking from both ends and to quickly seal the leaking parts.

[0019] 2. This invention uses a pressure sensor to monitor the pressure changes in the containment chamber in real time and links it with the controller and an audible and visual alarm. On the one hand, it can confirm whether the sealing operation is successful. On the other hand, if a seal failure occurs during subsequent use, resulting in hydrogen leakage and abnormal pressure, the audible and visual alarm can be triggered to facilitate timely detection and handling, thereby improving the level of safety protection.

[0020] 3. This invention uses a glue gun connected to a glue injection connector to inject sealant into the cavity between two sealing components. The sealant flows inside the cavity, squeezing out residual air from the vent hole until it completely fills the gap between the pipe and the clamping part. After curing, it forms a secondary seal, which significantly improves the sealing performance.

[0021] 4. By setting up an inflatable sealing bladder and cooperating with a valve, the present invention can connect to the valve via an inflation device, so that the two inflatable sealing bladders inside the pipe section can be inflated and expanded, adaptively fitting the slightly deformed pipe surface, achieving a tight fit with the pipe and improving the sealing performance. Attached Figure Description

[0022] Figure 1 This is a front view structural diagram of Embodiment 1 of the present invention; Figure 2 This is a top view of the structure of Embodiment 1 of the present invention; Figure 3 This is a frontal cross-sectional view of Embodiment 2 of the present invention; Figure 4 This is a front view structural diagram of Embodiment 3 of the present invention; Figure 5 This is a frontal cross-sectional view of Embodiment 3 of the present invention.

[0023] In the diagram: 11 sealing cover, 12 tubing section, 13 connecting section, 14 bolt, 2 glue injection joint, 3 pressure sensor, 41 arc-shaped sealing strip, 42 L-shaped sealing strip, 43 inflatable sealing bladder, 44 valve, 45 connecting pipe, 5 vent hole, 6 sealing gasket. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0025] Please see Figure 1-5This invention provides a technical solution for a rapid sealing and repair device for leaks in hydrogen energy storage pipelines: Example 1: according to Figure 1 and Figure 2 As shown, it includes a pressure detection unit, an audible and visual alarm, a controller, and two sealing covers 11. The two sealing covers 11 can be connected to surround the leaking part of the pipeline to form a sealed receiving chamber that can accommodate the pipeline joint.

[0026] The pressure detection unit is a pressure sensor 3, or a pressure gauge can also be used. The pressure sensor 3 is installed on the top of any of the sealing covers 11, and its detection end extends into the receiving chamber to detect the pressure in the receiving chamber and confirm whether the sealing operation is successful.

[0027] The signal output terminal of pressure sensor 3 is electrically connected to the signal input terminal of the controller, and the alarm signal output terminal of the controller is electrically connected to the signal trigger terminal of the audible and visual alarm. In the event of a sealing failure during subsequent use, resulting in hydrogen leakage and the pressure signal exceeding the preset threshold, a trigger signal is output to the audible and visual alarm to drive it to issue an audible and visual alarm, facilitating timely detection and handling, and improving the level of safety protection.

[0028] The sealing cover 11 has a pipe-holding part 12 at both ends. The pipe-holding part 12 has a semi-circular structure and fits against the outer surface of the pipe. The mating surfaces of the sealing cover 11 and the pipe-holding part 12 are equipped with sealing gaskets 6 to prevent hydrogen from leaking from the joint gaps of the components.

[0029] Both ends of the sealing cover 11 and the pipe clamping part 12 extend outward to form a connecting part 13. A bolt hole is provided in the connecting part 13, and the same bolt 14 is provided in the two corresponding bolt holes, so that the two pipe clamping parts 12 can be installed separately on the outside of the pipe. Two sealing elements are provided on the inner side of the pipe clamping part 12. After the two corresponding sealing elements are connected, a closed annular sealing structure is formed, which fits tightly against the outer wall of the pipe to prevent hydrogen from leaking from both ends.

[0030] The tube clamping part 12 is provided with an injection joint 2 and an vent hole 5. The injection joint 2 and the vent hole 5 are located between two annular seals. The injection gun is connected to the injection joint 2 to inject sealant into the cavity between the two seals. The sealant flows in the cavity and squeezes out the residual air from the vent hole 5 until the gap between the pipe and the tube clamping part 12 is completely filled. After curing, a secondary seal is formed, which significantly improves the sealing performance.

[0031] In practical use, the rapid sealing and repair device for hydrogen energy storage pipeline leakage of the present invention first aligns the two sealing covers 11 with the pipeline joint, so that they are joined together to cover the leakage point. At the same time, after the two opposing sealing parts are joined together, a closed annular sealing structure is formed, which fits tightly against the outer wall of the pipeline. Then, bolts 14 are passed through the bolt holes of the upper and lower connecting parts 13 and tightened evenly so that the two pipe-holding parts 12 hold the pipeline tightly, and the two sealing covers 11 are joined tightly. Connect the glue gun to the glue injection connector 2 and slowly inject the sealant (modified epoxy resin) into the cavity between the two seals. Observe the vent hole 5. When the sealant overflows evenly from the vent hole 5, stop the glue injection, indicating that the cavity has been completely filled. Then let it stand until the sealant cures to form a secondary seal. After the device is installed, pressure sensor 3 will continuously monitor the pressure in the containment chamber. If the sealing is successful, the pressure in the containment chamber will remain stable and below the preset alarm threshold of the controller. Throughout the subsequent operation, the controller will continuously monitor the pressure signal. If hydrogen leakage occurs due to seal failure, causing abnormal pressure, the audible and visual alarm will be triggered to facilitate timely detection and handling.

[0032] Example 2: Based on Example 1, such as Figure 3 As shown, the two sealing elements are an L-shaped sealing strip 42 and an arc-shaped sealing strip 41. The L-shaped sealing strip 42 and the arc-shaped sealing strip 41 are installed at intervals on the clamping surface of the pipe clamping part 12. The folded part of the L-shaped sealing strip 42 contacts the inner side of the sealing cover 11. After the bolt 14 is tightened, the arc-shaped sealing strip 41 and the L-shaped sealing strip 42 are tightly fitted to the outer wall of the pipe to form the first annular seal, which quickly seals the leak.

[0033] Example 3: Based on Example 1, such as Figure 4 and Figure 5 As shown, the clamping surface of the pipe clamping part 12 has two arc-shaped grooves spaced apart. The two sealing elements are two inflatable sealing bladders 43. The inflatable sealing bladders 43 are made of elastic material and can fit tightly against the outer wall of the pipe after inflation. The two inflatable sealing bladders 43 are respectively set in the two arc-shaped grooves. At least two connecting pipes 45 for connecting the two inflatable sealing bladders 43 are provided on the outside of the pipe clamping part 12. One of the sealing bladders 43 is provided with a valve 44, and the outer end of the valve 44 extends out of the pipe clamping part 12.

[0034] It also includes an inflation device, which is a portable air pump. The inflation port of the portable air pump is connected to the outer end of the valve 44, so that the two air-sealing bladders 43 inside the tube clamp 12 are inflated and expanded, adaptively fitting the slightly deformed pipe surface, achieving a tight fit with the pipe and improving the sealing performance.

Claims

1. A rapid sealing and repair device for leaks in hydrogen energy storage pipelines, comprising a pressure detection unit and two sealing covers, characterized in that: The two sealing caps can be mated to surround the leak in the pipeline, forming a sealed containment chamber; A pressure detection unit is installed on top of any of the sealing covers, with its detection end extending into the receiving chamber for detecting the pressure in the receiving chamber; The sealing cover has pipe-holding parts at both ends. Sealing gaskets are installed on the mating surfaces of the sealing cover and the pipe-holding parts. The two pipe-holding parts that are opposite each other can be detachably installed on the outside of the pipe. Two sealing elements are provided on the inner side of the pipe-holding parts. The tube is provided with an injection joint and an exhaust hole, which are located between two annular seals.

2. The rapid sealing and repair device for hydrogen storage pipeline leakage according to claim 1, characterized in that: The tube-holding part has a semi-circular structure and is attached to the outer surface of the pipe.

3. The rapid sealing and repair device for hydrogen storage pipeline leakage according to claim 1 or 2, characterized in that: Both ends of the sealing cover and the tube-holding part extend outward to form a connecting part. A bolt hole is opened in the connecting part, and the same bolt is installed in the two corresponding bolt holes at the top and bottom to connect and fix the two opposite connecting parts at the top and bottom.

4. The rapid sealing and repair device for hydrogen storage pipeline leakage according to claim 2, characterized in that: The two sealing elements are an L-shaped sealing strip and an arc-shaped sealing strip, which are installed alternately on the clamping surface of the tube clamping part, wherein the folded part of the L-shaped sealing strip contacts the inner side of the sealing cover.

5. The rapid sealing and repair device for hydrogen storage pipeline leakage according to claim 2, characterized in that: The clamping surface of the tube-holding part has two arc-shaped grooves spaced apart.

6. The rapid sealing and repair device for hydrogen storage pipeline leakage according to claim 2, characterized in that: The two sealing elements are two inflatable sealing bladders, which are respectively set in two arc-shaped grooves. At least two connecting tubes for connecting the two inflatable sealing bladders are provided on the outside of the tube. One of the sealing bladders is provided with a valve, and the outer end of the valve extends out of the tube.

7. The rapid sealing and repair device for hydrogen storage pipeline leakage according to claim 6, characterized in that: The inflatable sealing bladder is made of elastic material and can fit tightly against the outer wall of the pipe after inflation.

8. The rapid sealing and repair device for hydrogen energy storage pipeline leakage according to claim 6, characterized in that: It also includes an inflation device, whose inflation port is connected to the outer end of the valve for inflating the air-sealed bladder.

9. The rapid sealing and repair device for hydrogen storage pipeline leakage according to claim 1, characterized in that: The pressure detection unit is a pressure sensor.

10. The rapid sealing and repair device for hydrogen storage pipeline leakage according to claim 9, characterized in that: It also includes an audible and visual alarm and a controller. The signal output terminal of the pressure sensor is electrically connected to the signal input terminal of the controller, and the alarm signal output terminal of the controller is electrically connected to the signal trigger terminal of the audible and visual alarm. The controller is used to output a trigger signal to the audible and visual alarm when the pressure signal exceeds a preset threshold, thereby driving the audible and visual alarm to issue an audible and visual alarm.

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