A prying device for gas pipeline hydrogen mixing ratio detection

Abstract

The application discloses a pry-mounted hydrogen mixing ratio detection device for a gas pipeline, which comprises a sampling pipeline, both ends of the sampling pipeline are used for detachable assembly with the gas pipeline, at least one sampling port is arranged on the sampling pipeline, a hoistable support is provided with a containing position, the sampling pipeline is detachably arranged in the containing position, an analyzer is arranged on the hoistable support and connected with the sampling port, a diffusion pipeline is connected with the analyzer, and the diffusion pipeline is also used for being connected with a diffusion point of the gas pipeline. The pry-mounted device is used for integrating and mounting the sampling pipeline, the analyzer and the diffusion pipeline on the hoistable support, and the pry-mounted device can be hoisted to the gas pipeline as a whole, only the two ends of the sampling pipeline need to be connected with the gas pipeline, and the diffusion pipeline needs to be connected with the diffusion point of the gas pipeline, so that the pipeline is shortened, the viscosity and volume delay of gas flowing in the long pipeline are avoided, the data response period is shorter, the on-site workload and construction time are significantly reduced, and the detection precision can be greatly improved.

Description

Technical Field

[0001] This application relates to the technical field of hydrogen blending ratio detection devices, and in particular to a skid-mounted gas pipeline hydrogen blending ratio detection device. Background Technology

[0002] Hydrogen blending in natural gas pipelines refers to adding a certain proportion of hydrogen to existing natural gas transmission systems to create hydrogen-blended natural gas, which is then transported to end users via pipelines. This method can not only effectively reduce carbon emissions and alleviate environmental pressure, but also enable the synergistic utilization of multiple gas sources. Furthermore, by utilizing natural gas pipeline networks to transport hydrogen, it is expected to overcome hydrogen transportation bottlenecks, solve the problem of large-scale hydrogen transportation, and significantly reduce hydrogen storage and transportation costs.

[0003] To ensure gas safety for end users and the stability of equipment operation, accurate control of the hydrogen blending ratio is crucial. Currently, hydrogen blending systems commonly employ on-site installation of analyzers to monitor the hydrogen concentration in the mixed gas and feed the analysis results back to the control system. However, due to limitations in the on-site system piping layout, there are usually long connecting pipelines between the analyzer and the sampling point, as well as between the analyzer and the gas venting point, causing significant delays in the transmission of the mixed gas. Because of the long time it takes for the gas to travel from the sampling point to the analyzer, the feedback of the analysis results is delayed, thus reducing the response speed and accuracy of hydrogen blending ratio control, affecting the stable operation and control effect of the system.

[0004] Therefore, existing technologies still need to be improved and developed. Utility Model Content

[0005] The technical problem to be solved by this application is to provide a skid-mounted gas pipeline hydrogen blending ratio detection device to improve the accuracy of hydrogen blending ratio detection, in order to address the above-mentioned deficiencies of the prior art.

[0006] The technical solution adopted by this application to solve the technical problem is as follows:

[0007] A skid-mounted gas pipeline hydrogen blending ratio detection device, comprising:

[0008] Sampling pipe; both ends of the sampling pipe are designed for detachable assembly with a gas pipeline; the sampling pipe is provided with at least one sampling port;

[0009] A hoistable support frame with a receiving position; the sampling pipe is detachably arranged within the receiving position;

[0010] The analyzer is mounted on the hoistable bracket and connected to the sampling port;

[0011] A venting pipe is connected to the analyzer; the venting pipe is also used to connect to the venting point of the gas pipeline.

[0012] The skid-mounted gas pipeline hydrogen blending ratio detection device includes multiple sampling ports located on the same axial section of the sampling pipeline.

[0013] The skid-mounted gas pipeline hydrogen blending ratio detection device, wherein the venting pipeline is parallel to the sampling pipeline and lower than the sampling pipeline.

[0014] The skid-mounted gas pipeline hydrogen blending ratio detection device, wherein the hoistable support includes:

[0015] Base;

[0016] At least one crossbeam; the crossbeam is higher than the sampling pipe; the analyzer is mounted on the crossbeam;

[0017] Multiple vertical beams are located between the base and the horizontal beam, and are respectively connected to the base and the horizontal beam.

[0018] The skid-mounted gas pipeline hydrogen blending ratio detection device further includes:

[0019] Connecting tubes are respectively connected to the analyzer and the sampling port;

[0020] The connecting tube includes a vertical part and a horizontal part. One end of the vertical part is connected to the sampling port, and the other end is connected to the horizontal part. The end of the horizontal part away from the vertical part is connected to the analyzer.

[0021] The skid-mounted gas pipeline hydrogen blending ratio detection device further includes:

[0022] A support arm is vertically mounted on the base;

[0023] A support plate is disposed at the top of the support arm and arranged perpendicularly to the support arm; the receiving position is located on the top surface of the support plate and is lower than the crossbeam.

[0024] The skid-mounted gas pipeline hydrogen blending ratio detection device further includes:

[0025] The diagonal brace is connected at one end to the base and at the other end to the vertical beam, and is arranged at an angle relative to the vertical beam to form a triangular area between the vertical beam and the base.

[0026] The skid-mounted gas pipeline hydrogen blending ratio detection device further includes:

[0027] A flame arrester is installed at the end of the sampling pipe.

[0028] The skid-mounted gas pipeline hydrogen blending ratio detection device further includes:

[0029] Multiple lifting lugs are provided on the hoistable bracket.

[0030] Beneficial effects: Compared to existing technologies that directly open sampling ports on gas pipelines, transport the samples through long-distance pipelines to a distant analyzer, and then connect the analyzer to the gas pipeline venting point via another long-distance pipeline to detect the hydrogen doping ratio, resulting in significant delays and reduced detection accuracy, this application uses a skid-mounted device. The sampling pipeline, analyzer, and venting pipe are integrated and installed on the same hoistable support. The skid-mounted gas pipeline hydrogen doping ratio detection device can be hoisted to the gas pipeline as a whole. Only the two ends of the sampling pipeline need to be connected to the gas pipeline, and the venting pipe to the gas pipeline venting point. This shortens the pipeline, avoids the viscosity and volume delay caused by gas flowing through long pipelines, results in a shorter data response cycle, significantly reduces on-site workload and construction time, and greatly improves detection accuracy. Attached Figure Description

[0031] Figure 1 This is a front view of the skid-mounted gas pipeline hydrogen blending ratio detection device described in this application;

[0032] Figure 2 This is a side view of the skid-mounted gas pipeline hydrogen blending ratio detection device described in this application;

[0033] Figure 3 This is a top view of the skid-mounted gas pipeline hydrogen blending ratio detection device described in this application. Detailed Implementation

[0034] Those skilled in the art will understand that, unless specifically stated otherwise, the singular forms “a,” “an,” “the,” and “the” used herein may also include the plural forms. It should be further understood that the term “comprising” as used in this application means the presence of the stated features, integers, steps, operations, elements, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. It should be understood that when we say an element is “connected” or “coupled” to another element, it can be directly connected or coupled to the other element, or there may be intermediate elements. Furthermore, “connected” or “coupled” as used herein can include wireless connections or wireless coupling. The term “and / or” as used herein includes all or any units and all combinations of one or more associated listed items.

[0035] It will be understood by those skilled in the art that, unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. It should also be understood that terms such as those defined in general dictionaries should be understood to have the same meaning as in the context of the prior art, and should not be interpreted in an idealized or overly formal sense unless specifically defined as herein.

[0036] The inventors of this application have discovered that, currently, hydrogen blending systems commonly employ on-site configuration and installation of analyzers to monitor the hydrogen concentration in the mixed gas and feed the analysis results back to the control system. Analyzers are typically installed in fixed control rooms or equipment rooms, at a significant physical distance from gas pipelines. Sampling points are located on the main gas pipeline, but the sampling pipe leading from the sampling port must bypass pipe racks, equipment, or structural obstacles, taking a long route to reach the analyzer. Similarly, gas pipeline venting points are usually located in safe outdoor areas, and their venting pipes must also be routed from the analyzer to the venting location. Therefore, due to limitations in the on-site system piping layout, there are usually long connecting pipelines between the analyzer and the sampling point, and between the analyzer and the gas pipeline venting point, causing significant delays in the transmission of the mixed gas. Because the gas takes a long time to travel from the sampling point to the analyzer, this not only increases the gas transmission delay but also increases the difficulty of piping layout and maintenance, ultimately leading to a delay in the feedback of analysis results. This reduces the response speed and accuracy of hydrogen blending ratio control, affecting the stable operation and control effect of the system.

[0037] To address the aforementioned technical problems, this application provides a skid-mounted gas pipeline hydrogen blending ratio detection device, such as... Figure 1 , Figure 2 and Figure 3 As shown, the skid-mounted gas pipeline hydrogen blending ratio detection device includes: a sampling pipe 1, a hoistable support 2, an analyzer 3, and a venting pipe 4; both ends of the sampling pipe 1 are used for detachable assembly with the gas pipeline; at least one sampling port 11 is provided on the sampling pipe 1; the hoistable support 2 has a receiving position; the sampling pipe 1 is detachably arranged in the receiving position; the analyzer 3 is set on the hoistable support 2 and connected to the sampling port 11; the venting pipe 4 is connected to the analyzer 3; the venting pipe 4 is also used to connect to the gas pipeline venting point.

[0038] Specifically, the hoistable bracket 2 is used to support the sampling pipe 1, the analyzer 3, and the venting pipe 4, thereby integrating the sampling pipe 1, the analyzer 3, and the venting pipe 4 into a single structure. This allows the distance between the sampling pipe 1 and the analyzer 3, and the distance between the analyzer 3 and the venting pipe 4, to be predetermined and arranged according to the shortest path principle, thus shortening the pipe length. As a single structure, the skid-mounted gas pipeline hydrogen blending ratio detection device eliminates the need to lay pipes across obstacles (such as walls, pipe corridors, etc.) in the gas pipeline environment. The pipes are directly connected along the optimal path inside or on the surface of the skid, eliminating the need for manual detours and further reducing the pipeline length.

[0039] After using a crane or other equipment to hoist the hoistable bracket 2 to the corresponding position of the gas pipeline to be tested, connect the two ends of the sampling pipe 1 to the gas pipeline respectively, and connect the vent pipe 4 to the vent point of the gas pipeline. Turn on the analyzer 3, and the hydrogen doping ratio of the gas extracted from the sampling port 11 can be detected by the analyzer 3. The detected gas is then discharged through the vent pipe 4 and the vent point of the gas pipeline in sequence, thus completing the detection of the hydrogen doping ratio of the gas pipeline.

[0040] Compared to existing technologies that directly open a sampling port 11 on the gas pipeline, transport the gas from the sampling port 11 to the distant analyzer 3 via a long pipeline, and then connect the analyzer 3 to the gas pipeline venting point via another long pipeline to achieve the detection of hydrogen doping ratio in the gas pipeline, which results in significant delay and reduced detection accuracy, this application adopts a skid-mounted device that integrates the sampling pipeline 1, the analyzer 3, and the venting pipe on the same hoistable bracket 2. This shortens the pipeline, avoids the viscosity and volume delay caused by gas flowing in long pipelines, and results in a shorter data response cycle, which can greatly improve detection accuracy.

[0041] Meanwhile, the skid-mounted structure highly integrates key components for sampling, analysis, and venting functions onto a unified platform, allowing for overall assembly and debugging before delivery, reducing on-site construction. The skid-mounted gas pipeline hydrogen blending ratio detection device can be hoisted to the gas pipeline as a whole, requiring only the connection of both ends of the sampling pipe 1 to the gas pipeline and the connection of the venting pipe 4 to the gas pipeline venting point, significantly reducing on-site workload and construction time. It is suitable for multi-site, batch testing scenarios, and the entire device is reusable, allowing for flexible transfer and redeployment between different testing points. It can serve as a standard unit for hydrogen blending detection modules, enabling wider replication and promotion in natural gas hydrogen blending projects, thus facilitating the standardized development of the industry.

[0042] It should be noted that the analyzer 3 mentioned in this application can be a hydrogen analyzer 3 or a hydrogen doping ratio analyzer 3. An existing analyzer 3 is used, and the structure and functional principle of the analyzer 3 will not be described in detail here.

[0043] In one embodiment of this application, there are multiple sampling ports 11, and the multiple sampling ports 11 are located on the same axial section of the sampling pipe 1.

[0044] Specifically, after hydrogen is added to the gas, although hydrogen is extremely light and has strong diffusivity, local concentration unevenness may still exist under certain operating conditions (such as after the mixing point, before bends, and before branches). A single sampling port 11 is prone to sampling local gas, resulting in poor representativeness, and there are differences in the distribution of gas flow velocity within the cross-section of the pipeline. Therefore, in this application, multiple sampling ports 11 are set on the sampling pipeline 1, which helps to obtain sample gas from multiple points, reflect the true hydrogen doping ratio of the entire cross-section, and improve dynamic response and stability.

[0045] Since there are multiple sampling ports 11, if these ports are distributed at different locations before and after the pipeline (i.e., not on the same cross section), the collected gas will be in different flow states or with different degrees of mixing. Especially when the flow rate changes or the load fluctuates, the hydrogen concentration at different locations will vary significantly, leading to inconsistent data and increased analytical errors. Therefore, in this application, the multiple sampling ports 11 are located on the same cross section of the sampling pipeline 1 and on the same axial section. This ensures sample gas consistency, facilitates confluence, reduces time difference errors, minimizes gas flow rate differences, and promotes unified sample delivery and gas flow stability.

[0046] In one embodiment of this application, there are 3 sampling ports 11 and 3 analyzers 3, and the analyzers 3 are connected to the sampling ports 11 in a one-to-one correspondence.

[0047] In one embodiment of this application, the venting pipe 4 is parallel to the sampling pipe 1 and is lower than the sampling pipe 1.

[0048] Specifically, the vent pipe 4 is connected to the vent point of the gas pipeline and to the analyzer 3, thereby venting the gas sampled in the analyzer 3. The gas flows sequentially from the gas pipeline, the sampling pipe 1, the analyzer 3, to the vent pipe 4. The vent pipe 4 is parallel to and lower than the sampling pipe 1, allowing the sample gas to form a natural high-low pressure differential path within the system. This ensures continuous flow even without external power, relying on gravity or micro-pressure to maintain sample gas renewal, avoid dead zones and stagnation, reduce backflow risk, and increase system stability.

[0049] The hoistable support 2 includes: a base 21, at least one horizontal beam 22, multiple vertical beams 23, and a connecting pipe 5; the horizontal beam 22 is higher than the sampling pipe 1, and the analyzer 3 is mounted on the horizontal beam 22; the multiple vertical beams 23 are located between the base 21 and the horizontal beam 22, and are respectively connected to the base 21 and the horizontal beam 22.

[0050] Specifically, the base 21 is used to place the sampler on the ground to position the overall structure, allowing both ends of the sampling pipe 1 to connect with the gas pipeline. The vertical beam 23 is connected to the base 21 and supports the horizontal beam 22, enabling the horizontal beam 22 to be positioned above the base 21 and maintained at a certain height. The horizontal beam 22 is parallel to the base 21 and is used to mount the analyzer 3.

[0051] The crossbeam 22, supported and positioned by the vertical beam 23, allows the analyzer 3 to be positioned at a certain height after installation. The connecting pipe 5 connects to both the analyzer 3 and the sampling port 11, thus establishing a connection between them. In this way, when the analyzer 3 is connected to the sampling port 11, the end of the connecting pipe 5 connected to the sampling port 11 is naturally lower than the end connected to the analyzer 3, with one end of the connecting pipe 5 higher and the other lower, and the airflow flowing from the lower end to the higher end.

[0052] Gases, especially hydrogen, have extremely low density and a clear tendency to rise. In this application, the analyzer 3 is positioned above the sampling port 11 by the crossbeam 22, which helps the sample gas to flow naturally upward into the analyzer 3 without forced pressurization. This helps to improve flow stability and response speed, and is especially suitable for bypass sampling and gravity release systems.

[0053] Meanwhile, under certain operating conditions, the gas may contain water vapor, droplets, or impurities. If the analyzer 3 is lower than the sampling pipe 1, these liquids may flow back to the analyzer 3 along the connecting pipe 5 during shutdown or low-pressure operation, causing instrument contamination, corrosion, or short circuits. Therefore, the configuration of the analyzer 3 in this application, mounted on the crossbeam 22 and positioned higher than the sampling port 11, can constitute a natural liquid seal protection.

[0054] Furthermore, since the venting pipe 4 is lower than the sampling pipe 1, while the analyzer 3 is installed on the crossbeam 22 higher than the sampling pipe 1, the height difference between the analyzer 3 and the venting pipe 4 increases, which helps the sample gas to be discharged from the analyzer 3 to the venting pipe 4 by gravity.

[0055] In one embodiment of this application, the connecting tube 5 includes a vertical part 51 and a horizontal part 52. One end of the vertical part 51 is connected to the sampling port 11, and the other end is connected to the horizontal part 52. The end of the horizontal part 52 facing away from the vertical part 51 is connected to the analyzer 3.

[0056] Specifically, the combination of the vertical part 51 and the horizontal part 52 makes the connecting pipe 5 form an L-shaped pipe with a right-angle bend, and the first section of the pipe (the vertical part 51) when the sample gas flows from the sampling port 11 to the analyzer 3 is arranged vertically, and the second section of the pipe (the horizontal part 52) ​​is arranged horizontally.

[0057] The vertical section 51 allows the sample gas to flow vertically upward after being discharged from the sampling port 11. When the gas is heated by convection or driven by pressure, it is easier to rise, reducing the gas residence time and improving the response speed. It can also effectively reduce the accumulation of impurities at the inlet, which is conducive to the impurities being carried away by the airflow, and avoids the accumulation of impurities in the connecting pipe 5 due to the tilted or horizontal arrangement of the first section of the management, which would form a stagnation area.

[0058] The horizontal section 52 is arranged horizontally near the analyzer 3, which allows the connecting pipe 5 to be laid along the support near the analyzer 3. The horizontal pipeline makes it easier for the connecting pipe 5 to be connected to the analyzer 3 without the need for a special structure.

[0059] The skid-mounted gas pipeline hydrogen blending ratio detection device also includes a support platform, on which the receiving position is disposed; the support platform is used to support and position the sampling pipeline 1. Specifically, the support platform includes a support arm 7 and a support plate 8; the support arm 7 is vertically disposed on the base 21; the support plate 8 is disposed on the top of the support arm 7 and is arranged perpendicular to the support arm 7; the receiving position is located on the top surface of the support plate 8 and is lower than the crossbeam 22.

[0060] The support platform described in this application forms a T-shaped support structure to support and position the sampling pipeline 1. Since the gas pipeline is subject to micro-vibration or thermal expansion and contraction, the support and positioning provided by the support platform can stably limit the offset or swaying of the sampling pipeline 1 through the "T-shaped triangular support structure" of the support platform, reducing or even avoiding loosening, micro-leakage, or errors in the analysis system.

[0061] The support plate 8 is also provided with a plurality of tightening straps 6, which are sleeved on the outside of the sampling pipe 1, and both ends of the tightening straps 6 are connected to the support plate 8, thereby fixing the sampling pipe 1 on the support plate 8 and preventing the sampling pipe 1 from shifting. The plurality of tightening straps 6 are distributed sequentially along the axial direction of the sampling pipe 1.

[0062] The skid-mounted gas pipeline hydrogen blending ratio detection device also includes a diagonal brace 9. One end of the diagonal brace 9 is connected to the base 21, and the other end of the diagonal brace 9 is connected to the vertical beam 23. The diagonal brace 9 is arranged at an angle relative to the vertical beam 23 to form a triangular area between the vertical beam 23 and the base 21.

[0063] The diagonal brace 9 is used to connect to the vertical beam 23 and the base 21 respectively, and forms a triangular area between the vertical beam 23 and the base 21, thereby providing triangular support for the vertical beam 23, improving the stability of the vertical beam 23 when it is erected on the base 21, and reducing the tilting and offset of the vertical beam 23.

[0064] A flame arrester 10 is also provided at the end of the sampling pipe 1, and the flame arrester 10 is detachably connected to the sampling pipe 1. The flame arrester 10 uses a fine metal structure (such as corrugated sheet or metal mesh) to break the flame propagation chain, block the heat and reaction conditions required for flame propagation, and prevent flash explosion from being conducted to the sampling pipe 1 or the analyzer 3.

[0065] The hoistable support 2 is also provided with a plurality of lifting lugs 12, which are used to detachably connect with lifting equipment such as cranes and hoists, so as to transfer the hoistable support 2 to the corresponding position of the gas pipeline.

[0066] In summary, this application provides a skid-mounted gas pipeline hydrogen blending ratio detection device, comprising: a sampling pipeline; both ends of the sampling pipeline are detachably assembled with the gas pipeline; at least one sampling port is provided on the sampling pipeline; a hoistable bracket with a receiving position; the sampling pipeline is detachably arranged within the receiving position; an analyzer is disposed on the hoistable bracket and connected to the sampling port; a venting pipeline is connected to the analyzer; the venting pipeline is also used to connect to the gas pipeline venting point. Compared to existing technologies that involve directly opening sampling ports on gas pipelines, transporting the samples through long-distance pipelines to an analyzer, and then connecting the analyzer to the gas pipeline venting point via another long-distance pipeline to detect hydrogen doping ratios, which results in significant delays and reduced detection accuracy, this application employs a skid-mounted device. The sampling pipeline, analyzer, and venting pipe are integrated and mounted on a single hoistable support. This skid-mounted hydrogen doping ratio detection device can be hoisted to the gas pipeline as a whole. Only the two ends of the sampling pipeline need to be connected to the gas pipeline, and the venting pipe to the gas pipeline venting point. This shortens the pipeline, avoids the viscosity and volume delays caused by gas flowing through long pipelines, results in a shorter data response cycle, significantly reduces on-site workload and construction time, and greatly improves detection accuracy.

[0067] It should be understood that the application of this application is not limited to the examples above. Those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A prying hydrogen blending ratio detection device for gas pipeline, characterized in that, It includes: Sampling pipe; both ends of the sampling pipe are designed for detachable assembly with a gas pipeline; the sampling pipe is provided with at least one sampling port; A hoistable support frame with a receiving position; the sampling pipe is detachably arranged within the receiving position; The analyzer is mounted on the hoistable bracket and connected to the sampling port; A venting pipe is connected to the analyzer; the venting pipe is also used to connect to the venting point of the gas pipeline.

2. The prying hydrogen blending ratio detection device for gas pipeline according to claim 1, characterized in that, There are multiple sampling ports, and the multiple sampling ports are located on the same axial section of the sampling pipe.

3. The prying hydrogen blending ratio detection device for gas pipeline according to claim 1, characterized in that, The venting pipe is parallel to the sampling pipe and is lower than the sampling pipe.

4. The prying hydrogen blending ratio detection device for gas pipeline according to claim 1, characterized in that, The hoistable support includes: Base; At least one crossbeam; the crossbeam is higher than the sampling pipe; the analyzer is mounted on the crossbeam; Multiple vertical beams are located between the base and the horizontal beam, and are respectively connected to the base and the horizontal beam.

5. The skid-mounted gas pipeline hydrogen blending ratio detection device according to claim 4, characterized in that, It also includes: Connecting tubes are respectively connected to the analyzer and the sampling port; The connecting tube includes a vertical part and a horizontal part. One end of the vertical part is connected to the sampling port, and the other end is connected to the horizontal part. The end of the horizontal part away from the vertical part is connected to the analyzer.

6. The skid-mounted gas pipeline hydrogen blending ratio detection device according to claim 4, characterized in that, It also includes: A support arm is vertically mounted on the base; A support plate is disposed at the top of the support arm and arranged perpendicularly to the support arm; the receiving position is located on the top surface of the support plate and is lower than the crossbeam.

7. The skid-mounted gas pipeline hydrogen blending ratio detection device according to claim 4, characterized in that, It also includes: The diagonal brace is connected at one end to the base and at the other end to the vertical beam, and is arranged at an angle relative to the vertical beam to form a triangular area between the vertical beam and the base.

8. The skid-mounted gas pipeline hydrogen blending ratio detection device according to claim 1, characterized in that, It also includes: A flame arrester is installed at the end of the sampling pipe.

9. The skid-mounted gas pipeline hydrogen blending ratio detection device according to claim 1, characterized in that, It also includes: Multiple lifting lugs are provided on the hoistable bracket.

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