Hydrogen detection device for hydrogen pipeline

Abstract

The utility model relates to hydrogen detection technical field, specifically disclose a kind of hydrogen detection device for hydrogen pipeline, including support frame and installation plate being set on support frame, support frame is provided with exhaust mechanism and limiting mechanism. Through exhaust mechanism, rotating adjusting block can drive exhaust pipe to rotate, make exhaust pipe rotate to with gas pipe same horizontal plane, gas in the gas pipe inside is discharged through exhaust pipe, improve the accuracy of detection data. Through limiting mechanism, pulling pull plate can drive slide column and positioning rod synchronous outward movement, make positioning rod separate from the inner wall of positioning hole, remove the positioning of adjusting block, loosen pull plate and drive slide column and positioning rod reset by spring resilience, prevent the phenomenon of derailment docking in the process of conveying and discharging gas, cause hydrogen leakage. The utility model solves the problem that the hydrogen conveying pipeline exists residual in the traditional detection method, leads to hydrogen detection data inaccuracy, thereby influence the accuracy of detection data.

Description

Technical Field

[0001] This utility model belongs to the field of hydrogen detection technology, specifically, it relates to a hydrogen detection device for hydrogen pipelines. Background Technology

[0002] Hydrogen, with its significant advantages such as combustion byproducts of only water, high energy density, and wide availability, has been widely regarded as a key clean energy carrier for achieving a low-carbon transition, and its application scenarios are rapidly expanding. In the transportation sector, fuel cell vehicles utilize hydrogen to efficiently generate electricity, achieving zero-emission operation and becoming an important development direction for new energy vehicles. In the energy sector, hydrogen power generation (especially through fuel cells or co-firing technology) provides a clean solution for grid peak shaving and distributed energy supply. Meanwhile, hydrogen plays an indispensable role in traditional industrial systems: it is a core raw material for bulk chemical products such as synthetic ammonia and methanol; it is used for hydrodesulfurization and upgrading in petroleum refining; it provides a protective atmosphere in float glass manufacturing; and it serves as a reducing protective gas or carrier gas in precision machining in the semiconductor and microelectronics industries. These wide-ranging and in-depth applications fully highlight the core position and immense value of hydrogen in modern energy structures and industrial production.

[0003] Therefore, hydrogen, as a key raw material and clean energy carrier, directly impacts engineering safety and product performance during production, making accurate testing crucial. Batch-by-batch quality inspection is a common method for hydrogen testing. However, implementing this testing in continuous production or transportation scenarios presents a core technical challenge: the transportation pipeline system (including valves, elbows, and connections) inevitably retains hydrogen or other process gases from previous batches (such as nitrogen, argon protective gas, and unpurged reaction gases). When a new batch of hydrogen samples is drawn, these residual gases can contaminate the sample, distorting the test results. Residual inert gases (such as air, nitrogen, and argon) dilute the hydrogen concentration, resulting in lower purity values; while other residual hydrogen-containing gases or impurities may introduce components from other batches, interfering with the accuracy of component analysis. This contamination caused by "historical residues" severely damages the authenticity and accuracy of batch hydrogen key indicator (purity, impurity content, component ratio) test data, thus significantly negatively impacting product quality control, process optimization, and even safety assessments.

[0004] Based on this, the present invention provides a hydrogen detection device for hydrogen pipelines to solve the problems existing in the prior art. Utility Model Content

[0005] In view of this, the main objective of this utility model is to provide a hydrogen detection device for hydrogen pipelines, so as to solve the problem that the presence of residues in the hydrogen transportation pipelines in traditional detection methods leads to inaccurate hydrogen detection data, thereby affecting the accuracy of the detection data.

[0006] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0007] A hydrogen detection device for a hydrogen pipeline includes a support frame and a mounting plate disposed on the support frame, wherein the support frame is provided with an exhaust mechanism and a limiting mechanism.

[0008] The exhaust mechanism includes an adjusting block rotatably disposed within a support frame. The adjusting block is provided with an exhaust pipe and a connecting groove, both of which are matched with an air supply pipe disposed on one side of the support frame.

[0009] The limiting mechanism includes a fixing block disposed on the outer wall of the mounting plate, and a positioning rod movably disposed on the fixing block. The positioning rod passes through the side wall of the mounting plate and is inserted into a positioning hole opened on the adjusting block.

[0010] In a preferred embodiment, the exhaust mechanism further includes a communication port formed on the side wall of the support frame.

[0011] In a preferred embodiment, a sealing groove is provided on the inner side of the support frame where the connecting port is located, and a rubber sealing ring is provided on the outer wall of the adjusting block at the location of the connecting groove and the exhaust end of the exhaust pipe, and the sealing ring and the sealing groove are fitted together to seal.

[0012] In a preferred embodiment, the outer diameter of the sealing ring is larger than the inner diameter of the sealing groove at the corresponding position on the inner wall of the support frame.

[0013] In a preferred embodiment, a rotating shaft is further provided on the inner side of the support frame, and the rotating shaft is rotatably connected to the adjusting block.

[0014] In a preferred embodiment, the limiting mechanism further includes a sliding hole formed on the outer wall of the fixed block, a spring disposed in the sliding hole, the end of the spring away from the inner wall of the sliding hole being connected to a sliding column, and the end of the sliding column away from the spring being connected to a pull plate.

[0015] In a preferred embodiment, a connecting plate is provided on one side of the sliding column, and the end of the connecting plate away from the sliding column is connected to the positioning rod.

[0016] In a preferred embodiment, the outer wall of the positioning rod is fitted to the inner wall of the positioning hole.

[0017] In a preferred embodiment, a control valve is also provided on the gas pipeline.

[0018] In a preferred embodiment, the hydrogen detection device for the hydrogen pipeline further includes a hydrogen detector connected to an outer support frame of the connection port on the side away from the gas pipeline.

[0019] Compared with the prior art, this utility model provides a hydrogen detection device for hydrogen transportation pipelines, which has the following beneficial effects:

[0020] 1. By setting up the exhaust mechanism, rotating the adjusting block can drive the exhaust pipe to rotate, so that the exhaust pipe rotates to the same horizontal plane as the gas supply pipe. The gas inside the gas supply pipe can be discharged through the connected exhaust pipe. In this way, it will not be affected by other residual gases during the detection process, thereby improving the accuracy of the detection data.

[0021] 2. By using a limiting mechanism, pulling the pull plate causes the sliding column and positioning rod to move outward synchronously, disengaging the positioning rod from the inner wall of the positioning hole and releasing the positioning of the adjusting block. Releasing the pull plate causes the spring to return the sliding column and positioning rod to their original positions, locking the outer wall of the positioning rod into the inner wall of the positioning hole, thus completing the positioning. This ensures the stability of the adjusting block during hydrogen delivery and gas emission, preventing derailment and hydrogen leakage. It also solves the problem of inaccurate hydrogen detection data due to residues in the hydrogen delivery pipeline, which affects the accuracy of traditional detection methods. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the overall structure of the hydrogen detection device for hydrogen pipelines according to this utility model;

[0024] Figure 2 This is a schematic diagram of the side bottom of the hydrogen detection device for hydrogen pipelines of this utility model;

[0025] Figure 3 This is a schematic diagram of the separation structure of the exhaust mechanism of this utility model;

[0026] Figure 4 This is a cross-sectional structural diagram of the exhaust mechanism of this utility model;

[0027] Figure 5 This is a cross-sectional view of the adjustment block of this utility model;

[0028] Figure 6 This is a cross-sectional view of the limiting mechanism of this utility model;

[0029] Figure 7 This is a diagram showing the operational status of the hydrogen detection device for hydrogen pipelines according to this utility model.

[0030] [Explanation of Key Component Symbols]

[0031] 1. Support frame; 2. Mounting plate; 3. Exhaust mechanism; 31. Connecting port; 32. Rotating shaft; 33. Adjusting block; 34. Exhaust pipe; 35. Sealing ring; 36. Sealing groove; 37. Connecting groove; 38. Gas supply pipe; 4. Limiting mechanism; 41. Fixing block; 42. Spring; 43. Sliding column; 44. Connecting plate; 45. Positioning rod; 46. Pull plate; 47. Positioning hole; 5. Control valve; 6. Hydrogen detector. Detailed Implementation

[0032] The structure of the hydrogen detection device for hydrogen pipelines will be further described in detail below with reference to the accompanying drawings and embodiments of this utility model.

[0033] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0034] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments as described in this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0035] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0036] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0037] As per the instruction manual Figures 1-7 As shown, this utility model provides a technical solution:

[0038] A hydrogen detection device for a hydrogen pipeline includes a support frame 1 and mounting plates 2 disposed on the support frame 1. The support frame 1 is mounted and fixed in use via four mounting plates 2. The support frame 1 is also equipped with an exhaust mechanism 3 and a limiting mechanism 4. The exhaust mechanism 3 includes an adjusting block 33 rotatably mounted inside the support frame 1. The adjusting block 33 has non-communicating exhaust pipes 34 and connecting grooves 37. Both exhaust pipes 34 and connecting grooves 37 are used in conjunction with a gas transmission pipe 38 disposed on one side of the support frame 1. The exhaust pipes 34 are used to discharge other gases inside the gas transmission pipe 38, and the connecting grooves 37 are used to connect the hydrogen to be detected in the gas transmission pipe 38 to a hydrogen detector 6 for hydrogen detection. The limiting mechanism 4 is used to limit the adjustment block 33. It includes a fixing block 41 installed on the outer wall of the mounting plate 2. A positioning rod 45 is movably installed on the fixing block 41. The positioning rod 45 passes through the side wall of the mounting plate 2 and is inserted into the positioning hole 47 opened on the outer wall of the adjustment block 33 to fix the adjustment block 33.

[0039] In the above description, with the above structure, during hydrogen detection, the two ends of the connecting groove 37 are connected to the gas supply pipe 38 and the hydrogen detector 6 respectively, and the hydrogen detector 6 is used to detect the hydrogen delivered in the gas supply pipe 38. After the detection is completed, the adjusting block 33 is rotated to connect the exhaust pipe 34 to the gas supply pipe 38, and the gas supply pipe 38 is purged by connecting the inlet end of the exhaust pipe 34 to the purging gas. At the same time, during the process of pushing the adjusting block 33 to rotate, the adjusting block 33 can be fixed by the cooperation of the positioning rod 45 and the positioning hole 47.

[0040] In a preferred embodiment, such as Figure 1 , Figure 2 and Figure 3 As shown, the exhaust mechanism 3 also includes a connecting port 31 opened on the side wall of the support frame 1. The connecting port 31 is connected to the gas supply pipe 38, the exhaust pipe 34 and the hydrogen detector 6. A sealing groove 36 is also provided on the inner side of the support frame 1 where the connecting port 31 is located. A rubber sealing ring 35 is also provided on the outer wall of the adjusting block 33 at the position of the connecting groove 37 and the exhaust end of the exhaust pipe 34. The sealing ring 35 and the sealing groove 36 are fitted together to seal, which is used to ensure the sealing of the contact surface between the adjusting block 33 and the support frame 1 during use.

[0041] In a preferred embodiment, such as Figure 1 , Figure 2 and Figure 3 As shown, a rotating shaft 32 is also provided on the inner side of the support frame 1, and the adjusting block 33 is rotatably mounted on the outer wall of the rotating shaft 32 for fixing the adjusting block 33 through the rotating shaft 32.

[0042] In a preferred embodiment, such as Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, three sealing rings 35 are provided, and the sealing rings 35 located at the ends of the connecting groove 37 are symmetrically distributed in pairs on the outer walls of both ends of the adjusting block 33. The outer diameter of all sealing rings 35 is larger than the inner diameter of the sealing groove 36 at the corresponding position on the inner wall of the support frame 1. When the adjusting block 33 is rotated into position, the sealing rings 35 are elastically deformed by the pressure of the side wall of the sealing groove 36, and tightly fill the gap of the sealing groove 36 through the material rebound characteristics. When switching between the gas supply pipe 38 and the detection / exhaust pipe, it is ensured that the contact surface between the adjusting block 33 and the support frame 1 forms an airtight isolation to prevent hydrogen leakage or backflow of purging gas.

[0043] In a preferred embodiment, such as Figure 1 , Figure 6 and Figure 7As shown, the limiting mechanism 4 also includes a sliding hole on the outer wall of the fixed block 41. A spring 42 is installed in the sliding hole. The end of the spring 42 away from the inner wall of the sliding hole is connected to a sliding column 43. The end of the sliding column 43 away from the spring 42 is connected to a pull plate 46. A connecting plate 44 is also installed on one side of the outer wall of the sliding column 43. The end of the connecting plate 44 away from the sliding column 43 is connected to one end of the positioning rod 45. Positioning holes 47 are provided on the outer walls of both the adjusting block 33 and the support frame 1. The positioning rod 45 is engaged with the inner wall of the positioning hole 47. The connecting plate 44 is used to manually pull the positioning plate 44 to release the positioning constraint of the positioning rod 45 on the adjusting block 33 during use. After the position of the adjusting block 33 is adjusted, the connecting plate 44 is released, so that the positioning rod 45 can be reset under the elastic force of the spring 42 and re-inserted into the corresponding positioning hole 47 to achieve the positioning of the adjusting block 33.

[0044] In a preferred embodiment, such as Figure 1 and Figure 6 As shown, the outer wall of the positioning rod 45 fits snugly against the inner wall of the positioning hole 47, which improves the tightness of the positioning rod 45 in engaging with the inner wall of the positioning hole 47, thereby improving the stability of the positioning rod 45 after it is engaged and positioned.

[0045] In a preferred embodiment, such as Figure 1 , Figure 2 and Figure 7 As shown, a control valve 5 is also provided on the gas pipeline 38, which is used to control the opening and closing of the gas pipeline 38 during use.

[0046] In a preferred embodiment, such as Figure 1 , Figure 2 and Figure 7 As shown, the outer end of the gas supply pipe 38 is a connection end, which is used to connect to equipment that needs to perform hydrogen detection for hydrogen detection.

[0047] In a preferred embodiment, such as Figure 1 and Figure 7 As shown, the hydrogen detector 6 preferably uses the RBBJ-T20 hydrogen detector. Its specific principle and detection process are well known to those skilled in the art and will not be described in detail here.

[0048] The implementation principle of the hydrogen detection device for hydrogen pipelines described in this embodiment is as follows:

[0049] After completing the previous test, the positioning of the limiting mechanism 4 on the adjusting block 33 can be released. Then, the adjusting block 33 can be rotated 180° inside the support frame 1 via the rotating shaft 32. This causes the adjusting block 33 to rotate the exhaust pipe 34 upwards, and then rotate the exhaust pipe 34 to the same horizontal plane as the air supply pipe 38. At the same time, during the movement of the adjusting block 33, the sealing ring 35 will move. When rotating, the sealing ring 35 at the connecting groove 37 will disengage from the inner wall of the sealing groove 36 on the inner wall of the adjusting block 33, and the sealing ring 35 at the exhaust pipe 34 will rotate to the inner wall of the sealing groove 36. This ensures that the exhaust pipe 34 and the air supply pipe 38 are aligned. The airtight seal between the gas pipes 38 prevents air leakage. The exhaust pipe 34 guides the gas inside the gas supply pipe 38. Then, by injecting gas into the gas supply pipe 38, any residual hydrogen or other gases are purged out. After purging, the adjusting block 33 can be rotated again, causing the connecting groove 37 to rotate to the position of the gas supply pipe 38 to complete the connection. Simultaneously, the hydrogen detector 6 is connected to the outer opening of the connecting port 31. Hydrogen is then output into the gas supply pipe 38 to complete the detection. This process is unaffected by other factors, thus improving the accuracy of the detection data.

[0050] Before rotating the adjusting block 33, first pull the pull plate 46 outward, causing the pull plate 46 to move the sliding column 43 outward. At the same time, during the movement of the sliding column 43, the spring 42 is stretched. Simultaneously, the sliding column 43 moves the connecting plate 44 and the positioning rod 45 outward. At this time, the outer wall of the positioning rod 45 can disengage from the inner wall of the positioning hole 47 on the adjusting block 33, thus releasing the positioning of the adjusting block 33. After adjustment, release the pull plate 46, and then the spring 42 rebounds, causing the sliding column 43 to reset, thereby causing the connecting plate 44 and the positioning rod 45 to reset and move, so that the outer wall of the positioning rod 45 is engaged with the inner wall of the positioning hole 47 to complete the positioning. This ensures the stability of the adjusting block 33 during the transportation of hydrogen and the emission of gas, preventing derailment and hydrogen leakage during the transportation and emission of gas.

[0051] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the scope of protection of the present utility model.

Claims

1. A hydrogen detection device for a hydrogen pipeline, comprising a support frame (1) and a mounting plate (2) disposed on the support frame (1), characterized in that, The support frame (1) is provided with an exhaust mechanism (3) and a limiting mechanism (4); The exhaust mechanism (3) includes an adjustment block (33) rotatably disposed in the support frame (1). The adjustment block (33) is provided with an exhaust pipe (34) and a connecting groove (37). The exhaust pipe (34) and the connecting groove (37) are both matched with the gas supply pipe (38) disposed on one side of the support frame (1). The limiting mechanism (4) includes a fixing block (41) disposed on the outer side wall of the mounting plate (2), and a positioning rod (45) is movably disposed on the fixing block (41). The positioning rod (45) penetrates the side wall of the mounting plate (2) and is inserted into the positioning hole (47) opened on the adjusting block (33).

2. The hydrogen detection device for hydrogen pipelines as described in claim 1, characterized in that, The exhaust mechanism (3) also includes a communication port (31) opened on the side wall of the support frame (1).

3. The hydrogen detection device for hydrogen pipelines as described in claim 2, characterized in that, A sealing groove (36) is also provided on the inner side of the support frame (1) where the connecting port (31) is located. A rubber sealing ring (35) is also provided on the outer wall of the adjustment block (33) at the position of the connecting groove (37) and the exhaust end of the exhaust pipe (34). The sealing ring (35) and the sealing groove (36) are fitted together to seal each other.

4. The hydrogen detection device for hydrogen pipelines as described in claim 3, characterized in that, The outer diameter of the sealing ring (35) is larger than the inner diameter of the sealing groove (36) at the corresponding position on the inner wall of the support frame (1).

5. The hydrogen detection device for hydrogen pipelines as described in claim 1, characterized in that, The inner side of the support frame (1) is also provided with a rotating shaft (32), which is rotatably connected to the adjusting block (33).

6. The hydrogen detection device for hydrogen pipelines as described in claim 1, characterized in that, The limiting mechanism (4) also includes a sliding hole on the outer wall of the fixed block (41), a spring (42) is provided in the sliding hole, the end of the spring (42) away from the inner wall of the sliding hole is connected to the sliding column (43), and the end of the sliding column (43) away from the spring (42) is connected to the pull plate (46).

7. The hydrogen detection device for hydrogen pipelines as described in claim 6, characterized in that, A connecting plate (44) is provided on one side of the sliding column (43), and the end of the connecting plate (44) away from the sliding column (43) is connected to the positioning rod (45).

8. The hydrogen detection device for hydrogen pipelines as described in claim 7, characterized in that, The outer wall of the positioning rod (45) fits snugly against the inner wall of the positioning hole (47).

9. The hydrogen detection device for hydrogen pipelines as described in claim 1, characterized in that, A control valve (5) is also provided on the gas pipeline (38).

10. The hydrogen detection device for hydrogen pipelines as described in claim 1, characterized in that, The hydrogen detection device for the hydrogen pipeline also includes a hydrogen detector (6), which is connected to the outer support frame (1) of the communication port (31) on the side away from the gas pipeline (38).

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