Hydrogen leakage detection and early warning device for hydrogen pipeline

Abstract

The utility model relates to the technical field of hydrogen leakage detection, in particular to a hydrogen pipeline hydrogen leakage detection early warning device which comprises a detection mechanism, the detection mechanism comprises two protective shells, the bottom ends of the two protective shells are connected through a hinge, and the inner walls of the protective shells are fixedly connected with sealing pieces. According to the device, the folding air bag is fixedly connected to the inner wall of the limiting ring, hydrogen enters the folding air bag through the communicating pipe after the pipeline leaks air, the folding air bag stretches to enable the clamping plate to slide along the inner wall of the limiting ring, and in the process, the shifting piece collides with the steel ring to give out warning sound; after the gas pipeline is unfolded, the area of a leakage pipeline can be rapidly determined through the bright appearance, power-on use is not needed, electricity is saved, the bottom ends of the two folding air bags on the same side extrude the plastic soft shell, soapy water is sprayed to the connecting seam of the two gas pipeline bodies from the nozzle, and the bubble generation condition at the connecting seam is observed. The leakage position of the pipeline connecting flange can be judged in an auxiliary mode, and use is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrogen leakage detection, in particular to a hydrogen leakage detection and early warning device for a hydrogen pipeline. Background Art

[0002] As a clean energy, hydrogen only produces water as its combustion product, which is pollution-free to the environment and helps reduce the consumption of fossil fuels. Therefore, the preparation, storage, and transportation technologies of hydrogen have received attention from relevant researchers. However, hydrogen is an extremely flammable and explosive gas. Therefore, during the transportation and storage of hydrogen, hydrogen leak detection and early warning of hydrogen pipelines are extremely important. In some existing chemical plants, sound and light alarms are used to detect and warn the connections of hydrogen pipelines. When this alarm detects a hydrogen leak, it will emit sound and light and alarm signals, but it needs to be powered on for use. Large-scale use will increase power consumption, and it is not convenient to assist in judging the leakage position of the pipeline connection flange, making it inconvenient to use. Utility Model Content

[0003] The purpose of the utility model is to provide a hydrogen pipeline hydrogen leakage detection and early warning device to solve the problems raised in the above background technology.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A hydrogen pipeline hydrogen leak detection and early warning device comprises a detection mechanism, wherein the detection mechanism comprises two protective shells, the bottom ends of the two protective shells are connected by a hinge, a sealing member is fixedly connected to the inner wall of the protective shell, and limiting rings are fixedly connected to the two outer side walls of the protective shell, and folding airbags are connected to the two outer side walls of the protective shell, the bottom end of the folding airbag is slidably connected to the adjacent limiting ring, the bottom end of the folding airbag is rotatably connected to a paddle, a steel ring for shielding the paddle is fixedly connected to an outer side wall of the limiting ring, an arc tube is fixedly connected to the two inner walls of the protective shell, and a liquid supply module for supplying liquid to the arc tube is arranged outside the protective shell.

[0006] Furthermore, the outer walls of the two protective shells are both fixedly connected with connecting seats for matching with bolts, and the two connecting seats are symmetrically distributed.

[0007] The invention further comprises: a plurality of nozzles are equidistantly provided on the outer wall of the arc-shaped tube.

[0008] Furthermore, the liquid supply module includes two plastic soft shells, the opposite ends of the two plastic soft shells are respectively fixedly connected to the adjacent outer wall of one of the protective shells, the outer wall of the plastic soft shell is connected with a replenishing port, the opposite ends of the two plastic soft shells are connected with a liquid supply pipe, and one end of the liquid supply pipe passes through the protective shell and is connected to the adjacent arc tube.

[0009] Furthermore, a limiting groove is provided on the inner wall of the limiting ring, the top and bottom ends of the folding airbag are respectively fixedly connected to a fixed shell and a clamping plate, a limiting block is fixedly connected to the outer wall of the clamping plate, and the limiting block is slidably connected to the inside of the adjacent limiting groove.

[0010] Furthermore, a connecting pipe is connected to the outer wall of the fixed shell, the connecting pipe is connected to the adjacent protective shell, a connecting rod is fixedly connected to the outer wall of the fixed shell, and the top end of the connecting rod is fixedly connected to the inner wall of the adjacent limiting ring.

[0011] Furthermore, a mounting plate is arranged at the bottom end of the folding airbag, an axle block is fixedly connected to one side of the mounting plate, the axle block passes through an adjacent clamping plate and is rotationally connected thereto, and a torsion spring is fixedly connected between one end of the axle block and the clamping plate.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. By fixing a folding airbag on the inner wall of the limit ring, hydrogen enters the folding airbag through the connecting pipe after the pipeline leaks. The folding airbag stretches to make the card slide along the inner wall of the limit ring. During the process, the paddle hits the steel ring and makes a warning sound. After unfolding, the area of ​​the leaking pipeline can be quickly determined by the bright appearance. No power is required to use it, which saves electricity. The plastic soft shell is squeezed at the bottom of the two folding airbags on the same side, and soapy water is sprayed from the nozzle to the connection seam of the two gas pipeline bodies. The bubble generation at the connection seam is observed to facilitate auxiliary judgment of the leakage position of the pipeline connection flange, which is convenient for use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the internal structure of the protective shell of the utility model;

[0016] Figure 3 This utility model Figure 2 A schematic diagram of the partially enlarged structure at center A;

[0017] Figure 4 This is a schematic diagram of the side section structure of the limit ring of the utility model;

[0018] Figure 5 This utility model Figure 4 A schematic diagram of the partially enlarged structure at B in the middle;

[0019] Figure 6 This is a cross-sectional structural diagram of the mounting plate of the utility model;

[0020] Figure 7It is a schematic diagram of the steel ring structure of the utility model.

[0021] In the figure: 10, detection mechanism; 11, protective shell; 111, sealing element; 112, connecting seat; 12, limiting ring; 121, limiting groove; 13, steel ring; 14, folding airbag; 141, fixing shell; 142, clamping plate; 143, mounting plate; 144, paddle; 145, limiting block; 146, shaft block; 147, torsion spring; 148, connecting pipe; 149, connecting rod; 15, arc tube; 151, nozzle; 16, liquid supply module; 161, plastic soft shell; 162, replenishing port; 163, liquid supply pipe; 20, gas pipeline body. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figures 1 to 7 In an embodiment of the utility model, a hydrogen pipeline hydrogen leakage detection and early warning device includes a detection mechanism 10, the detection mechanism 10 includes two protective shells 11, the bottom ends of the two protective shells 11 are connected by a hinge, a sealing member 111 is fixedly connected to the inner wall of the protective shell 11, and a limiting ring 12 is fixedly connected to the two outer walls of the protective shell 11. A folding airbag 14 is connected to the two outer walls of the protective shell 11, and the bottom end of the folding airbag 14 is slidably connected to the adjacent limiting ring 12, and a paddle 144 is rotatably connected to the bottom end of the folding airbag 14, and a steel ring 13 for shielding the paddle 144 is fixedly connected to one outer wall of the limiting ring 12, and an arc tube 15 is fixedly connected to the two inner walls of the protective shell 11, and a liquid supply module 16 for supplying liquid to the arc tube 15 is arranged outside the protective shell 11.

[0024] Specifically, by fixing a folding airbag 14 on the inner wall of the limiting ring 12, when there is a leak at the connection between the two gas pipeline bodies 20, hydrogen enters the folding airbag 14 through the connecting pipe 148, and the folding airbag 14 stretches to make the clamping plate 142 slide along the inner wall of the limiting ring 12. During the process, the paddle 144 collides with the steel ring 13 to make a warning sound. The folding airbag 14 can be made of a nylon material with a brighter appearance to assist in quickly determining the leakage position. The plastic soft shell 161 is squeezed at the bottom ends of the two folding airbags 14 on the same side, and soapy water is sprayed from the nozzle 151 to the connection seam of the two gas pipeline bodies 20. The bubble situation at the connection seam of the gas pipeline bodies 20 can roughly determine the leakage position.

[0025] Embodiment 1

[0026] like Figure 2-4 As shown, in this embodiment, the liquid supply module 16 includes two plastic soft shells 161, and the opposite ends of the two plastic soft shells 161 are respectively fixedly connected to the adjacent outer wall of one of the protective shells 11, and the outer wall of the plastic soft shell 161 is connected with a replenishing port 162. The opposite ends of the two plastic soft shells 161 are connected with a liquid supply pipe 163, one end of the liquid supply pipe 163 passes through the protective shell 11 and is connected to the adjacent arc tube 15, and a plurality of nozzles 151 are equidistantly provided on the outer wall of the arc tube 15.

[0027] In this embodiment, soapy water is added to the plastic soft shell 161 through the replenishing port 162, so that a portion of soapy water is pre-stored in the arc tube 15. After the bottom ends of the two folding airbags 14 squeeze the plastic soft shell 161, the soapy water enters the liquid supply module 16 from the liquid supply pipe 163 and is sprayed out from the nozzle 151, so that it is convenient to roughly judge the leakage position through the bubbles at the flange connection seam of the two gas pipeline bodies 20. The arc tube 15 sprays soapy water between the two gas pipeline bodies 20 through the nozzle 151. During installation, the top ends of the two protective shells 11 can be tilted 30 degrees to 50 degrees so that multiple nozzles 151 are as high as possible, so that when spraying soapy water, the soapy water flows downward from the flange tops of the two gas pipeline bodies 20 along the flanges to wrap the connection seams.

[0028] like Figure 1 As shown, in this embodiment, connecting seats 112 for matching with bolts are fixedly connected to the outer walls of the two protective shells 11, and the two connecting seats 112 are symmetrically distributed.

[0029] In a specific implementation, when the two protection shells 11 are installed, the two connection seats 112 are butted against each other, and are fixed by penetrating the two connection seats 112 , thereby limiting the connection between the two protection shells 11 .

[0030] Embodiment 2

[0031] On the basis of the first embodiment, in order to guide the extension of the folded airbag 14, the folded airbag 14 cooperates with the steel ring 13 to emit a warning sound, and at the same time, the plastic soft shell 161 is squeezed to make soapy water spray out, so as to facilitate the determination of the leakage position.

[0032] like Figure 5-7As shown, in the present embodiment, a limiting groove 121 is provided on the inner wall of the limiting ring 12, and the top and bottom ends of the folding airbag 14 are respectively fixedly connected with a fixed shell 141 and a card plate 142, and a limiting block 145 is fixedly connected to the outer wall of the card plate 142, and the limiting block 145 is slidably connected to the inside of the adjacent limiting groove 121, and a connecting pipe 148 is connected to the outer wall of the fixed shell 141, and the connecting pipe 148 is connected to the adjacent protective shell 11, and a connecting rod 149 is fixedly connected to the outer wall of the fixed shell 141, and the top end of the connecting rod 149 is fixedly connected to the inner wall of the adjacent limiting ring 12, and a mounting plate 143 is provided at the bottom end of the folding airbag 14, and a shaft block 146 is fixedly connected to one side of the mounting plate 143, and the shaft block 146 passes through the adjacent card plate 142 and is rotatably connected thereto, and a torsion spring 147 is fixedly connected between one end of the shaft block 146 and the card plate 142.

[0033] In a specific implementation, the limiting block 145 is limited by the limiting groove 121, thereby limiting the movement trajectory of the clamping plate 142 at the bottom end of the folding airbag 14, guiding the extension of the folding airbag 14, so that the folding airbag 14 can squeeze the plastic soft shell 161, and the fixed shell 141 is fixedly connected to the limiting ring 12 by the connecting rod 149, so as to stably limit the top of the folding airbag 14, and air is introduced into the folding airbag 14 from the connecting pipe 148. When the folding airbag 14 is extended, only the bottom end will move. The mounting plate 143 and the mounting plate 142 are rotationally limited by the limiting action of the axis block 146 by the clamping plate 142. When the clamping plate 142 moves, it drives the paddle 144 to paddle the steel ring 13 to produce a warning sound. When the clamping plate 142 needs to be moved to its original position later, the mounting plate 143 can be rotated to prevent the steel ring 13 from blocking the paddle 144, and the mounting plate 143 can be driven to rotate and reset by the torsion spring 147.

[0034] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-limiting from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0035] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A hydrogen pipeline hydrogen leak detection and early warning device, characterized in that: The invention comprises a detection mechanism, which comprises two protective shells, the bottom ends of the two protective shells are connected by a hinge, a sealing member is fixedly connected to the inner wall of the protective shell, the two outer side walls of the protective shell are fixedly connected to a limiting ring, the two outer side walls of the protective shell are connected to a folding airbag, the bottom end of the folding airbag is slidably connected to the adjacent limiting ring, the bottom end of the folding airbag is rotatably connected to a paddle, a steel ring for shielding the paddle is fixedly connected to an outer side wall of the limiting ring, an arc tube is fixedly connected to the two inner walls of the protective shell, and a liquid supply module for supplying liquid to the arc tube is arranged on the outside of the protective shell.

2. A hydrogen pipeline hydrogen leak detection and early warning device according to claim 1, characterized in that: The outer walls of the two protective shells are both fixedly connected with connection seats for matching with bolts, and the two connection seats are symmetrically distributed.

3. A hydrogen pipeline hydrogen leakage detection and early warning device according to claim 1, characterized in that: A plurality of nozzles are equidistantly arranged on the outer wall of the arc-shaped tube.

4. A hydrogen pipeline hydrogen leak detection and early warning device according to claim 1, characterized in that: The liquid supply module includes two plastic soft shells, the opposite ends of the two plastic soft shells are respectively fixedly connected to the adjacent outer wall of one of the protective shells, the outer wall of the plastic soft shell is connected with a replenishing port, and the opposite ends of the two plastic soft shells are connected with a liquid supply pipe, one end of the liquid supply pipe passes through the protective shell and is connected with the adjacent arc tube.

5. A hydrogen pipeline hydrogen leak detection and early warning device according to claim 1, characterized in that: The inner wall of the limiting ring is provided with a limiting groove, the top and bottom ends of the folding airbag are respectively fixedly connected with a fixed shell and a clamping plate, the outer wall of the clamping plate is fixedly connected with a limiting block, and the limiting block is slidably connected to the inside of the adjacent limiting groove.

6. A hydrogen pipeline hydrogen leakage detection and early warning device according to claim 5, characterized in that: A connecting pipe is connected to the outer wall of the fixed shell, and the connecting pipe is connected to the adjacent protective shell. A connecting rod is fixedly connected to the outer wall of the fixed shell, and the top end of the connecting rod is fixedly connected to the inner wall of the adjacent limiting ring.

7. A hydrogen pipeline hydrogen leakage detection and early warning device according to claim 5, characterized in that: A mounting plate is arranged at the bottom end of the folding airbag, an axle block is fixedly connected to one side of the mounting plate, the axle block passes through an adjacent clamping plate and is rotationally connected thereto, and a torsion spring is fixedly connected between one end of the axle block and the clamping plate.

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