CN117823812A - Natural gas hydrogen-adding experimental device for high-pressure fluctuation pipeline - Google Patents
Natural gas hydrogen-adding experimental device for high-pressure fluctuation pipeline Download PDFInfo
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- CN117823812A CN117823812A CN202311805623.1A CN202311805623A CN117823812A CN 117823812 A CN117823812 A CN 117823812A CN 202311805623 A CN202311805623 A CN 202311805623A CN 117823812 A CN117823812 A CN 117823812A
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 208
- 239000003345 natural gas Substances 0.000 title claims abstract description 97
- 239000001257 hydrogen Substances 0.000 claims abstract description 96
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 96
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 95
- 238000002474 experimental method Methods 0.000 claims abstract description 65
- 239000007789 gas Substances 0.000 claims abstract description 63
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 27
- 230000001681 protective effect Effects 0.000 claims abstract description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- 230000001105 regulatory effect Effects 0.000 claims description 8
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- 238000012360 testing method Methods 0.000 claims description 4
- 230000001174 ascending effect Effects 0.000 claims description 3
- 230000003068 static effect Effects 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000010926 purge Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000003916 acid precipitation Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005094 computer simulation Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/34—Hydrogen distribution
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- Pipeline Systems (AREA)
Abstract
The invention relates to a natural gas hydrogen-adding experimental device for a high-pressure fluctuation pipeline, which comprises a protective gas supply and conveying system, a hydrogen supply and conveying system, a natural gas supply and conveying system, a mixer, a fluctuation experiment pipeline section and a horizontal experiment pipeline section, wherein the hydrogen supply and conveying system is connected with an inlet of the mixer through a hydrogen pipeline, the natural gas supply and conveying system is connected with the inlet of the mixer through a natural gas pipeline, an outlet of the mixer is respectively connected with the inlets of the fluctuation experiment pipeline section and the horizontal experiment pipeline section through pipelines, the protective gas supply and conveying system is respectively connected with upstream sections of the hydrogen pipeline and the natural gas pipeline through pipelines, a first branch pipe is connected between the inlets of the natural gas pipeline and the horizontal experiment pipeline section, and a downstream section of the hydrogen pipeline is connected with the first branch pipe through a second branch pipe. The advantages are that: can meet the requirement of simulating the long-distance transportation of the natural gas hydrogen-doped pipeline on the complex and multi-fluctuation of high-pressure terrain.
Description
Technical Field
The invention relates to the technical field of gas energy, in particular to a natural gas hydrogen-adding experimental device for a high-pressure fluctuation pipeline.
Background
The natural gas hydrogen-adding technology is to inject hydrogen into a natural gas pipeline to mix to form hydrogen-adding natural gas, and to convey the hydrogen to a terminal user, so as to form systematic application of hydrogen production, hydrogen mixing, hydrogen conveying and hydrogen utilization. The natural gas hydrogen-adding technology can improve the utilization rate of renewable energy sources, is beneficial to solving the problem in China, realizes the partial replacement of natural gas by hydrogen, and is beneficial to reducing the external dependence of natural gas in China. Besides, the hydrogen-doped natural gas can reduce pollutants generated by terminal combustion, and is beneficial to solving the problems of city haze, acid rain and the like. Therefore, the application of natural gas pipeline hydrogen loading technology is one of the important directions of the development of the future natural gas industry.
The hydrogen is mixed and transported into the active natural gas pipeline, which is an effective method for realizing the large-scale, long-distance and low-cost storage and transportation of the hydrogen. Because the molecular weight of hydrogen is far lower than that of natural gas, the height drop of a natural gas long-distance pipeline can reach thousands kilometers, and along with the doping of hydrogen, whether the local hydrogen partial pressure and the volume fraction of the pipeline are increased due to the molecular weight difference of hydrogen and natural gas, so that the pipeline is invalid to cause leakage is a technical difficulty which prevents the popularization and application of the natural gas hydrogen-doping technology in the high-pressure long-distance pipeline.
Although a plurality of natural gas hydrogen loading and conveying demonstration projects are carried out at home and abroad at present, the feasibility of natural gas hydrogen loading and conveying is proved. However, because the transportation distances of the countries are different, the running pressure of the natural gas pipeline is different, the data of other people cannot be completely carried, the transportation distance of the China is long, the complicated pipeline in many places has fluctuation, and no hydrogen loading experimental device suitable for the high-pressure fluctuation pipeline is not beneficial to the long-distance transportation of the hydrogen loading pipeline.
Based on the above, there is a need to develop a hydrogen-adding experimental device suitable for domestic long-distance transportation of natural gas.
Disclosure of Invention
The invention aims to provide a natural gas hydrogen-adding experimental device for a high-pressure fluctuation pipeline, which effectively overcomes the defects of the prior art.
The technical scheme for solving the technical problems is as follows:
the utility model provides a natural gas hydrogen experimental device that is used for high pressure, fluctuation pipeline, including protection gas supply conveying system, hydrogen supply conveying system, natural gas supply conveying system, the blender, fluctuation experiment pipeline section and horizontal experiment pipeline section, above-mentioned hydrogen supply conveying system passes through the entry of hydrogen pipeline connection above-mentioned blender, above-mentioned natural gas supply conveying system passes through the entry of natural gas pipeline connection above-mentioned blender, the export of above-mentioned blender is respectively through the entry of pipeline connection above-mentioned fluctuation experiment pipeline section and horizontal experiment pipeline section, above-mentioned protection gas supply conveying system is respectively through the pipeline connection above-mentioned hydrogen pipeline and the two upstream section of natural gas pipeline, be connected with first branch pipe between the entry of above-mentioned natural gas pipeline and horizontal experiment pipeline section, the downstream section of above-mentioned hydrogen pipeline passes through the second branch pipe and connects above-mentioned first branch pipe.
On the basis of the technical scheme, the invention can be improved as follows.
Further, the above-mentioned fluctuation experiment pipe section includes the ascending section of slope and the descending section of slope downward, and above-mentioned fluctuation experiment pipe section is equipped with first hydrogen concentration detector, first gas pressure detector and first relief valve respectively in upstream section, middle section and downstream section.
Further, a second hydrogen concentration detector and a second gas pressure detector are provided in the downstream section of the horizontal test tube section.
Further, the hydrogen pipeline is provided with a first temperature detector, a third gas pressure detector, a first flowmeter, a first flow regulating valve and a second cut-off valve from the upstream section to the downstream section respectively; the natural gas pipeline is provided with a second temperature detector, a fourth gas pressure detector, a second flowmeter, a second flow regulating valve and a third cut-off valve from an upstream section to a downstream section respectively; a third hydrogen concentration detector and a fifth gas pressure detector are arranged at the outlet of the mixer; the inlets of the fluctuation experiment tube section and the horizontal experiment tube section are respectively provided with a fourth cut-off valve, and the outlets of the fluctuation experiment tube section and the horizontal experiment tube section are respectively provided with a first cut-off valve; the upstream section, the middle section and the downstream section of the first branch pipe are respectively provided with a fourth hydrogen concentration detector, the upstream section of the first branch pipe is provided with a sixth gas pressure detector, and a sixth cut-off valve is arranged at the joint of the first branch pipe and a natural gas pipeline; and a fifth cut-off valve is arranged on the second branch pipe.
Further, the outlets of the fluctuation experiment pipe section and the horizontal experiment pipe section are respectively connected with an emptying pipeline through branch pipelines, and a gas pressure reducing device is arranged on the emptying pipeline.
Further, the shielding gas supply and delivery system is a nitrogen cylinder group.
Further, the hydrogen supply and delivery system is a hydrogen tank car.
Further, the natural gas supply and transportation system is a CNG tank car.
Further, the upstream section of the hydrogen line is connected in series with a hydrogen pressure reducing device, the shielding gas supply and delivery system is connected to the inlet of the hydrogen pressure reducing device through a line, the upstream section of the natural gas line is connected in series with a methane pressure reducing device, and the shielding gas supply and delivery system is connected to the inlet of the methane pressure reducing device through a line.
Further, the above mixer is a static mixer.
The beneficial effects of the invention are as follows: the structure design is reasonable, effectively solves the problem of high fuel consumption rate of the high-horsepower tractor, and the disassembly and the maintenance are more convenient than the structure of the existing tractor.
Drawings
FIG. 1 is a schematic diagram of a natural gas loading experiment device for high pressure, undulating pipelines according to the present invention.
In the drawings, the list of components represented by the various numbers is as follows:
1. a shielding gas supply and delivery system; 2. a hydrogen supply delivery system; 3. a natural gas supply delivery system; 4. a mixer; 5. a heave experiment pipe section; 6. a horizontal experimental pipe section; 7. a first branch pipe; 8. a gas pressure reducing device; 9. a first shut-off valve; 10. a fourth shut-off valve; 21. a hydrogen line; 22. a second branch pipe; 31. a natural gas pipeline; 41. a third hydrogen concentration detector; 42. a fifth gas pressure detector; 61. a second hydrogen concentration detector; 62. a second gas pressure detector; 71. a fourth hydrogen concentration detector; 72. a sixth gas pressure detector; 73. a sixth shut-off valve; 211. a first temperature detector; 212. a third gas pressure detector; 213. a first flowmeter; 214. a first flow regulating valve; 215. a second shut-off valve; 221. a fifth cut-off valve; 311. a second temperature detector; 312. a fourth gas pressure detector; 313. a second flowmeter; 314. a second flow regulating valve; 315. a third shut-off valve; 511. a first hydrogen concentration detector; 512. a first gas pressure detector; 513. a first safety valve; 2111. a hydrogen pressure reducing device; 3111. methane pressure reducing device.
Detailed Description
The principles and features of the present invention are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the invention and are not to be construed as limiting the scope of the invention.
Examples: as shown in fig. 1, the natural gas loading experiment device for a high-pressure, undulating pipeline of the present embodiment includes a shielding gas supply and transportation system 1, a hydrogen supply and transportation system 2, a natural gas supply and transportation system 3, a mixer 4, an undulating experiment pipe section 5, and a horizontal experiment pipe section 6, the hydrogen supply and transportation system 2 is connected to an inlet of the mixer 4 through a hydrogen pipe 21, the natural gas supply and transportation system 3 is connected to an inlet of the mixer 4 through a natural gas pipe 31, an outlet of the mixer 4 is connected to inlets of the undulating experiment pipe section 5 and the horizontal experiment pipe section 6 through pipes, respectively, the shielding gas supply and transportation system 1 is connected to an upstream section of both the hydrogen pipe 21 and the natural gas pipe section 31 through pipes, respectively, a first branch pipe 7 is connected between the inlets of the natural gas pipe 31 and the horizontal experiment pipe section 6, and a downstream section of the hydrogen pipe 21 is connected to the first branch pipe 7 through a second branch pipe 22.
Wherein, the hydrogen pipeline 21 is provided with a first temperature detector 211, a third gas pressure detector 212, a first flowmeter 213, a first flow regulating valve 214 and a second cut-off valve 215 from the upstream section to the downstream section respectively; the natural gas line 31 is provided with a second temperature detector 311, a fourth gas pressure detector 312, a second flowmeter 313, a second flow rate regulating valve 314, and a third shut-off valve 315 from the upstream section to the downstream section, respectively; a third hydrogen concentration detector 41 and a fifth gas pressure detector 42 are arranged at the outlet of the mixer 4; a fourth cut-off valve 10 is respectively arranged at the inlets of the fluctuation experiment tube section 5 and the horizontal experiment tube section 6, and a first cut-off valve 9 is respectively arranged at the outlets of the fluctuation experiment tube section 5 and the horizontal experiment tube section 6; the upstream section, the middle section and the downstream section of the first branch pipe 7 are respectively provided with a fourth hydrogen concentration detector 71, the upstream section of the first branch pipe 7 is provided with a sixth gas pressure detector 72, and the joint of the first branch pipe 7 and the natural gas pipeline 31 is provided with a sixth stop valve 73; the second branch pipe 22 is provided with a fifth shut-off valve 221.
The whole experimental process is as follows:
step S1, checking an experimental device;
checking whether a natural gas hydrogen-adding experimental device suitable for a high-pressure fluctuation pipeline is in a normal working state or not, wherein the checking comprises the steps of checking whether a pipeline section where a mixer 4 is positioned works normally or not, checking whether a fluctuation experimental pipeline section 5 and a horizontal experimental pipeline section 6 work normally or not, and checking whether readings of various valve instruments are normal or not;
step S2, purging and replacing the protective gas:
after the second cut-off valve 215, the third cut-off valve 315, the fourth cut-off valve 10, the fifth cut-off valve 221 and the sixth cut-off valve 73 are opened, the protective gas supply and conveying system 1 is opened, then the protective gas is adopted to purge the hydrogen-doped natural gas pipeline layering experiment device applicable to the high-pressure fluctuation pipeline, the gas in the device is replaced by the protective gas, the residual gas and the hydrogen-doped natural gas in the device are prevented from forming explosive gas, and the safety of the device is ensured. The purged and replaced gas is discharged by the opened first cut-off valve 9;
step S3, device pre-operation
After purging and replacement are finished, the shielding gas supply and conveying system 1 is closed, the hydrogen supply and conveying system 2 and the natural gas supply and conveying system 3 start to supply high-pressure hydrogen and natural gas to an experimental device, after depressurization to meet the experimental requirement pressure, the high-pressure hydrogen and the natural gas are mixed in the mixer 4, the hydrogen-doped natural gas is discharged after passing through the fluctuation experimental pipe section 5 and the horizontal experimental pipe section 6, and the device is kept to be operated for 2-3 minutes;
step S4, flow experiment
After the experiment starts, the high-pressure hydrogen gas provided by the hydrogen gas supply and conveying system 2, the high-pressure natural gas provided by the natural gas supply and conveying system 3 is depressurized respectively to reduce the pressure to 4-8MPa meeting the experiment requirement, then the high-pressure natural gas enters the mixer 4 for mixing, the mixed hydrogen-doped natural gas enters the fluctuation experiment tube section 5 and the horizontal experiment tube section 6 through the two fourth cut-off valves 10 respectively, the fluctuation experiment tube section 5 is provided with a first hydrogen concentration detector 511 and a first gas pressure detector 512 at the upstream section, a middle section and a downstream section respectively for detecting the pressure and the hydrogen concentration of the hydrogen-doped natural gas, and a second hydrogen concentration detector 61 and a second gas pressure detector 62 at the downstream section of the horizontal experiment tube section 6 for detecting the concentration and the pressure of the hydrogen-doped natural gas of the horizontal experiment tube section 6. After the result is obtained, the residual hydrogen-doped natural gas is emptied or burnt;
step S5, processing after the experiment is finished
And after the experiment is finished, repeating the step S2 to carry out nitrogen purging and replacement on the natural gas hydrogen-adding experimental device, and checking whether a valve and an instrument on the hydrogen-adding natural gas experimental device are opened or closed according to the requirement.
The device has reasonable design, can simulate the high-pressure conveying of the horizontal pipe section in a stepping manner in the experimental process, can simulate the high-pressure conveying of the undulating pipe section, and can better simulate the relatively complex topography with undulation during the pipeline transportation. In addition, the gas in the pipeline of the device is connected with high-pressure gas during design, parts in the device such as a valve are also high-pressure cut-off valves, the device simulates the running condition of the hydrogen-adding pipeline under high pressure, accords with the high-pressure conveying condition of the existing natural gas hydrogen-adding pipeline, and can test proper data for the long-distance and large-scale normal hydrogen-adding operation of the natural gas pipeline. The remote transportation of the actual natural gas hydrogen-adding pipeline in China is well simulated on the whole, the continuous operation of the hydrogen-adding pipeline under the safe and stable condition is ensured, the requirement of simulating the long-distance transportation of the natural gas hydrogen-adding pipeline on high-pressure terrain complex and fluctuation can be met, and the limitation that the natural gas hydrogen-adding experimental device in China is mostly used for experiments with low-pressure gas and mostly used for single horizontal pipeline is overcome.
What needs to be stated is:
the high-pressure hydrogen and the natural gas are uniformly mixed in a given ratio in the mixer 4 through the first flowmeter 213 and the second flowmeter 313 respectively to form the hydrogen-doped natural gas, and the hydrogen-doped natural gas enters the fluctuation experiment pipe section 5 and the horizontal experiment pipe section 6 for experimental dynamic simulation.
In this embodiment, the relief experiment pipe section 5 includes an ascending section with an upward inclination (the inclination angle is 45 °) and a descending section with a downward inclination (the inclination angle is 45 °), and the relief experiment pipe section 5 is provided with a first hydrogen concentration detector 511, a first gas pressure detector 512, and a first safety valve 513 in the upstream section, the middle section, and the downstream section, respectively (i.e., a set of first hydrogen concentration detectors 511, first gas pressure detectors 512, and first safety valves 513 in the upstream section, the middle section, and the downstream section, respectively).
In the present embodiment, the downstream section of the above-described horizontal experiment tube section 6 is provided with a second hydrogen concentration detector 61 and a second gas pressure detector 62.
In this embodiment, the outlets of the undulating experiment tube section 5 and the horizontal experiment tube section 6 are respectively connected with an evacuation line through branch lines, and a gas pressure reducing device 8 is arranged on the evacuation line. The hydrogen-doped natural gas passing through the fluctuation experiment tube section 5 and the horizontal experiment tube section 6 is safely exhausted or burnt after passing through the gas pressure reducing equipment 8.
In this embodiment, the protective gas supply and transport system 1 employs a nitrogen cylinder group.
In this embodiment, the hydrogen supply and delivery system 2 employs a hydrogen tank car.
In this embodiment, the natural gas supply and transportation system 3 is a CNG tank car.
In this embodiment, a hydrogen pressure reducing device 2111 is connected in series to an upstream section of the hydrogen line 21, the shielding gas supply and delivery system 1 is connected to an inlet of the hydrogen pressure reducing device 2111 through a line, a methane pressure reducing device 3111 is connected in series to an upstream section of the natural gas line 31, and the shielding gas supply and delivery system 1 is connected to an inlet of the methane pressure reducing device 3111 through a line.
In this embodiment, the above-mentioned mixer 4 is a conventional static mixer in the market, and the specific model is reasonably adapted according to the actual experimental requirements.
Of particular emphasis is the fact that: the steel suitable for the pipeline in the natural gas hydrogen-loading experimental device of the high-pressure and fluctuation pipeline in the embodiment is preferably hydrogen embrittlement resistant steel; the sealing connection between the valve and the instrument is preferably made of materials and technology for preventing hydrogen leakage. For experimental safety, a plurality of safety valves are arranged in the device to ensure safety. In addition, a PLC controller A is also configured in the embodiment, and all valves in the device are electrically controlled valves and are respectively connected with the PLC controller, so that automatic and intelligent control is realized.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (10)
1. A natural gas hydrogen experimental apparatus that is used for high pressure, fluctuation pipeline, its characterized in that: including shielding gas supply conveying system (1), hydrogen supply conveying system (2), natural gas supply conveying system (3), blender (4), relief experiment pipeline section (5) and horizontal experiment pipeline section (6), hydrogen supply conveying system (2) are connected through hydrogen pipeline (21) the entry of blender (4), natural gas supply conveying system (3) are connected through natural gas pipeline (31) the entry of blender (4), the export of blender (4) is respectively through the pipeline connection the entry of relief experiment pipeline section (5) and horizontal experiment pipeline section (6), shielding gas supply conveying system (1) are respectively through the pipeline connection the upstream section of hydrogen pipeline (21) and natural gas pipeline (31), be connected with first branch pipe (7) between the entry of natural gas pipeline (31) with horizontal experiment pipeline section (6), the downstream section of hydrogen pipeline (21) is connected through second branch pipe (22) first branch pipe (7).
2. A natural gas hydrogen loading experimental set-up for high pressure, undulating pipeline as defined in claim 1, wherein: the fluctuation experiment tube section (5) comprises an ascending section with an upward inclination and a descending section with a downward inclination, and the fluctuation experiment tube section (5) is respectively provided with a first hydrogen concentration detector (511), a first gas pressure detector (512) and a first safety valve (513) at the upstream section, the middle section and the downstream section.
3. A natural gas hydrogen loading experimental set-up for high pressure, undulating pipeline as defined in claim 1, wherein: the downstream section of the horizontal experiment tube section (6) is provided with a second hydrogen concentration detector (61) and a second gas pressure detector (62).
4. A natural gas hydrogen loading experimental set-up for high pressure, undulating pipeline as defined in claim 1, wherein: the hydrogen pipeline (21) is respectively provided with a first temperature detector (211), a third gas pressure detector (212), a first flowmeter (213), a first flow regulating valve (214) and a second cut-off valve (215) from an upstream section to a downstream section; a second temperature detector (311), a fourth gas pressure detector (312), a second flowmeter (313), a second flow regulating valve (314) and a third shut-off valve (315) are respectively arranged on the natural gas pipeline (31) from the upstream section to the downstream section; a third hydrogen concentration detector (41) and a fifth gas pressure detector (42) are arranged at the outlet of the mixer (4); the inlets of the fluctuation experiment tube section (5) and the horizontal experiment tube section (6) are respectively provided with a fourth cut-off valve (10), and the outlets of the fluctuation experiment tube section (5) and the horizontal experiment tube section (6) are respectively provided with a first cut-off valve (9); the upstream section, the middle section and the downstream section of the first branch pipe (7) are respectively provided with a fourth hydrogen concentration detector (71), the upstream section of the first branch pipe (7) is provided with a sixth gas pressure detector (72), the joint of the first branch pipe (7) and the natural gas pipeline (31) is provided with a sixth cut-off valve (73), and the second branch pipe (22) is provided with a fifth cut-off valve (221).
5. A natural gas hydrogen loading experimental set-up for high pressure, undulating pipeline as defined in claim 1, wherein: the outlets of the fluctuation experiment pipe section (5) and the horizontal experiment pipe section (6) are respectively connected with an emptying pipeline through branch pipelines, and a gas pressure reducing device (8) is arranged on the emptying pipeline.
6. A natural gas hydrogen loading experimental set-up for high pressure, undulating pipeline as defined in claim 1, wherein: the protective gas supply and conveying system (1) is a nitrogen cylinder group.
7. A natural gas hydrogen loading experimental set-up for high pressure, undulating pipeline as defined in claim 1, wherein: the hydrogen supply and conveying system (2) is a hydrogen tank car.
8. A natural gas hydrogen loading experimental set-up for high pressure, undulating pipeline as defined in claim 1, wherein: the natural gas supply and conveying system (3) is a CNG tank car.
9. A natural gas hydrogen loading test setup for high pressure, undulating pipeline according to any one of claims 1 to 8, wherein: the hydrogen pipeline (21) is connected in series with a hydrogen pressure reducing device (2111) at the upstream section, the protective gas supply conveying system (1) is connected to the inlet of the hydrogen pressure reducing device (2111) through a pipeline, the methane pressure reducing device (3111) is connected in series at the upstream section of the natural gas pipeline (31), and the protective gas supply conveying system (1) is connected to the inlet of the methane pressure reducing device (3111) through a pipeline.
10. A natural gas hydrogen loading test setup for high pressure, undulating pipeline according to any one of claims 1 to 8, wherein: the mixer (4) is a static mixer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311805623.1A CN117823812A (en) | 2023-12-26 | 2023-12-26 | Natural gas hydrogen-adding experimental device for high-pressure fluctuation pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311805623.1A CN117823812A (en) | 2023-12-26 | 2023-12-26 | Natural gas hydrogen-adding experimental device for high-pressure fluctuation pipeline |
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| Publication Number | Publication Date |
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| CN117823812A true CN117823812A (en) | 2024-04-05 |
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|---|---|---|---|
| CN202311805623.1A Pending CN117823812A (en) | 2023-12-26 | 2023-12-26 | Natural gas hydrogen-adding experimental device for high-pressure fluctuation pipeline |
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| CN (1) | CN117823812A (en) |
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- 2023-12-26 CN CN202311805623.1A patent/CN117823812A/en active Pending
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