Hydrogen leakage detection and early warning device for hydrogen pipeline
By installing clamps and rubber rings at the flange connection, the problems of dust pollution and wind-induced hydrogen dispersion in outdoor environments are solved, enabling timely detection and accurate alarm for minute leaks.
Patent Information
- Application Number
- CN202520433947.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-12
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-03-12
AI Technical Summary
Existing hydrogen leak detectors are easily contaminated by dust in outdoor environments and have difficulty detecting even small leaks. In particular, hydrogen is easily dispersed by the wind at flange connections, affecting detection accuracy.
A hydrogen leak detection and early warning device was designed. By setting a clamp and rubber ring seal at the flange connection, the leaked hydrogen is concentrated in the gas tank, and the detection end is isolated inside the clamp to prevent dust contamination and wind-borne hydrogen dissipation.
It effectively prevents dust contamination, ensures the sensitivity and accuracy of the detector, and promptly detects minute leaks at flange connections.
Smart Images
Figure CN223939235U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pipeline hydrogen transportation technology, specifically a hydrogen pipeline hydrogen leakage detection and early warning device. Background Technology
[0002] Pipeline hydrogen transportation refers to a technology that uses dedicated pipelines to transport hydrogen from production sites to consumption sites. The core of this technology lies in building a pipeline network from hydrogen production plants to hydrogen stations or end users, in which hydrogen is transported in gaseous form. As an efficient and economical way of transporting hydrogen energy, pipeline hydrogen transportation is gradually gaining attention worldwide. When using hydrogen pipelines to transport hydrogen, in order to detect whether there is a leak in the hydrogen pipeline in a timely manner, hydrogen leak alarms are usually installed above the leak points on the hydrogen pipeline where leaks are likely to occur.
[0003] Currently used hydrogen leak detectors are generally installed above leak points in hydrogen pipelines using mounting brackets. They operate on the principle that hydrogen's density is lower than air's; when hydrogen leaks, it rises and is detected by the detector. The flanges connecting the valves to the hydrogen pipeline are particularly vulnerable to leaks due to seal failure, improper operation, or seasonal factors, making them key detection points. However, outdoor hydrogen leak detectors are susceptible to problems due to the complex outdoor environment. Dust and other impurities easily accumulate on the hydrogen sensor surface. Even with filters, dust buildup on the sensor over time can affect its detection performance and accuracy. Furthermore, even small leaks at the valve flange connection point can be easily dispersed by the wind, making timely and accurate detection by the detector difficult. Utility Model Content
[0004] To address the shortcomings of existing technologies, this utility model provides a hydrogen pipeline hydrogen leak detection and early warning device. By using two sets of clamps, the connection between the valve flange and the pipeline flange can be sealed, while the detection end of the detector body can be isolated inside the clamps. This not only reduces the risk of dust accumulation and contamination of the sensor inside the detector body, but also prevents minor leaks between the pipeline flange and the valve flange from being blown away by the wind and thus failing to be detected and alarmed in time by the detector body, thereby solving the problems mentioned in the background technology.
[0005] Technical solution
[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: a hydrogen pipeline hydrogen leakage detection and early warning device, including a detector body and a clamp on the outside of the pipeline for sealing the flange connection end. A gas groove is opened around the inner side of the clamp to accommodate the pipeline flange and the valve flange. The detection end of the detector body is sealed and connected to the inner side of the clamp, and after the detector body is connected to the inner side of the clamp, the detection end of the detector body extends into the gas groove.
[0007] Furthermore, each set of clamps is divided into upper and lower halves that are connected to each other.
[0008] Furthermore, each set of clamps has two sets of rubber rings symmetrically connected on the inside, with the upper and lower parts connected together.
[0009] Furthermore, two annular retaining plates are provided on the inner side of the clamp, with both ends of the annular retaining plates extending to the edge of the inner arc-shaped surface of the clamp.
[0010] Furthermore, a groove adapted to the annular clamp is provided on the outer surface of the rubber ring, and the annular clamp is embedded inside the rubber ring when the clamp is connected to the rubber ring.
[0011] Furthermore, the inner sides of the two connecting ends of the rubber ring abut against the rubber block, and the sides of the rubber block are provided with arc-shaped extensions. The thickness of the arc-shaped extensions gradually decreases in the outward extension area at both ends of the rubber block, and the connecting ends of the upper and lower rubber rings are provided with snap-fit grooves that are adapted to the shape of the rubber block.
[0012] Furthermore, the upper and lower clamps are fixedly connected by fastening bolts.
[0013] Furthermore, a connecting pipe is fixedly connected between the upper halves of the left and right adjacent clamps. The air inlet ends of the connecting pipe are connected to the air groove, and a telescopic hose is connected to the center of the connecting pipe.
[0014] The beneficial effects of this utility model are as follows:
[0015] By using a clamp installed on the outside of the pipeline, the clamp can be connected and sealed to the outside of the connection between the pipeline flange and the valve flange. Even if a small amount of hydrogen leaks between the pipeline flange and the valve flange, the clamp can concentrate the leaked hydrogen in the gas tank, preventing the wind in the outdoor environment from blowing away the hydrogen and affecting the detection of the leaked hydrogen by the detector itself. This allows for timely detection and alarm when a leak occurs between the pipeline flange and the valve flange. At the same time, since the detection end of the detector is located inside the clamp and isolated from the outside world, it can prevent dust and impurities from the external environment from adhering to the hydrogen sensor, thereby maintaining the detection sensitivity and accuracy of the detector itself. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0017] Figure 2 This is a schematic diagram of the connection structure between the structural clamp and the pipe flange of this utility model;
[0018] Figure 3 This is a schematic diagram of the connection structure between the clamp and the rubber ring of this utility model;
[0019] Figure 4 This is a schematic diagram of the structure of the rubber block of this utility model.
[0020] The components include: 1. the instrument body; 2. the clamp; 3. the air groove; 4. the rubber ring; 5. the annular clamping plate; 6. the rubber block; 7. the connecting pipe; and 8. the telescopic hose. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0022] See Figures 1-4 A hydrogen pipeline hydrogen leak detection and early warning device includes a detector body 1 and a clamp 2 on the outside of the pipeline for sealing the flange connection end. The clamp 2 has a gas groove 3 around its inner side to accommodate the pipeline flange and the valve flange. The detection end of the detector body 1 is sealed and connected to the inner side of the clamp 2. After the detector body 1 is connected to the inner side of the clamp 2, the detection end of the detector body 1 extends into the gas groove 3.
[0023] In this solution: by installing a clamp 2 on the outside of the connection end between the pipe flange and the valve flange, even if a small amount of hydrogen leaks between the pipe flange and the valve flange, the clamp 2 can concentrate the leaked hydrogen in the gas tank 3, preventing the wind in the outdoor environment from blowing away the hydrogen and affecting the detection of the leaked hydrogen by the detector body 1, thus enabling timely detection and alarm. At the same time, since the detection end of the detector body 1 is located inside the clamp 2 and isolated from the outside, it can prevent dust and impurities in the external environment from adhering to the hydrogen sensor, thereby maintaining the detection sensitivity and accuracy of the detector body 1.
[0024] Each set of clamps 2 is divided into upper and lower halves, which are connected to each other.
[0025] In this embodiment: by setting the clamp 2 for docking connection, it is convenient to connect and install the clamp 2 on the outside of the pipe, and it is also convenient to remove the clamp 2 from the outside of the pipe.
[0026] Each set of clamps 2 has two sets of rubber rings 4 symmetrically connected on the inside, with the upper and lower parts connected together.
[0027] In this embodiment: the rubber ring 4 can be connected and sealed between the clamp 2 and the outer wall of the pipe, thereby improving the sealing performance of the clamp 2 on the outside of the pipe.
[0028] Two annular clamping plates 5 are provided on the inner side of the clamp 2, and the two ends of the annular clamping plates 5 extend to the edge of the inner arc surface of the clamp 2.
[0029] In this embodiment, the annular clamping plate 5 can be pressed tightly against the outside of the rubber ring 4 to improve the stability of the connection between the clamp 2 and the rubber ring 4.
[0030] The outer surface of the rubber ring 4 is provided with a groove that matches the annular clamping plate 5. When the clamp 2 is connected to the rubber ring 4, the annular clamping plate 5 is embedded inside the rubber ring 4.
[0031] In this embodiment: by setting a groove on the outside of the rubber ring 4, it is easy to accurately install the rubber ring 4 on the inside of the clamp 2, and at the same time, it can prevent the position of the rubber ring 4 from shifting after it is connected to the inside of the clamp 2.
[0032] The inner sides of the two connecting ends of the rubber ring 4 abut against the rubber block 6. The rubber block 6 has arc-shaped extensions on both sides. The thickness of the arc-shaped extensions gradually decreases in the area extending outward from both ends of the rubber block 6. The connecting ends of the rubber ring 4 that are connected to each other have snap-fit grooves that are adapted to the shape of the rubber block 6.
[0033] In this embodiment: the rubber block 6 can be filled between the connecting ends of the upper and lower rubber rings 4 to reduce the gap when connecting the upper and lower rubber rings 4 and improve the sealing effect of the rubber rings 4 on the pipe.
[0034] The upper and lower clamps 2 are fixedly connected by fastening bolts.
[0035] In this embodiment, the fastening bolts can connect the upper and lower clamps 2 to each other, so that the clamps 2 have good stability when connected to the outside of the pipe.
[0036] A connecting pipe 7 is fixedly connected between the upper halves of the left and right adjacent clamps 2. The air inlet ends of the connecting pipe 7 are connected to the air groove 3, and a telescopic hose 8 is connected to the center of the connecting pipe 7.
[0037] In this embodiment: the connecting pipe 7 can connect the air grooves 3 between the clamps 2 on both sides, so that when a leak occurs on either side of the connection between the flange at both ends of the valve and the flange of the pipeline, it can be detected by the detector body 1. The telescopic hose 8 can adjust the extension length of both ends of the connecting pipe 7, making the connecting pipe 7 more flexible in use.
[0038] It should be noted that in this paper, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.
[0039] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A hydrogen pipeline hydrogen leak detection and early warning device, comprising a detector body (1), characterized in that: It also includes a clamp (2) on the outside of the pipe for sealing the flange connection end. A gas groove (3) is opened around the inside of the clamp (2) to accommodate the pipe flange and valve flange. The detection end of the detector body (1) is sealed and connected to the inside of the clamp (2). After the detector body (1) is connected to the inside of the clamp (2), the detection end of the detector body (1) extends into the gas groove (3).
2. The hydrogen pipeline hydrogen leak detection and early warning device according to claim 1, characterized in that: Each set of clamps (2) is divided into upper and lower halves and connected to each other.
3. The hydrogen pipeline hydrogen leak detection and early warning device according to claim 1, characterized in that: Each clamp (2) has two sets of rubber rings (4) symmetrically connected on the inside.
4. The hydrogen pipeline hydrogen leak detection and early warning device according to claim 1, characterized in that: Two annular plates (5) are provided on the inner side of the clamp (2), and the two ends of the annular plates (5) extend to the edge of the inner arc surface of the clamp (2).
5. A hydrogen pipeline hydrogen leak detection and early warning device according to claim 1, characterized in that: The outer surface of the rubber ring (4) has a groove that matches the annular plate (5). When the clamp (2) is connected to the rubber ring (4), the annular plate (5) is embedded inside the rubber ring (4).
6. The hydrogen pipeline hydrogen leak detection and early warning device according to claim 1, characterized in that: The inner sides of the two connecting ends of the rubber ring (4) abut against the rubber block (6). The rubber block (6) has arc-shaped extensions on both sides. The thickness of the arc-shaped extensions gradually decreases in the area extending outward from both ends of the rubber block (6). The connecting ends of the rubber ring (4) that are connected to the upper and lower parts are provided with snap-fit grooves that are adapted to the shape of the rubber block (6).
7. A hydrogen pipeline hydrogen leak detection and early warning device according to claim 1, characterized in that: The two clamps (2) are fixedly connected by fastening bolts.
8. A hydrogen pipeline hydrogen leak detection and early warning device according to claim 1, characterized in that: A connecting pipe (7) is fixedly connected between the upper halves of the left and right adjacent clamps (2). The air inlet ends of the connecting pipe (7) are connected to the air groove (3), and a telescopic hose (8) is connected to the center of the connecting pipe (7).