CN114963017B - Natural gas line hydrogen-adding comprehensive experiment system device - Google Patents
Natural gas line hydrogen-adding comprehensive experiment system device Download PDFInfo
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- CN114963017B CN114963017B CN202210454946.XA CN202210454946A CN114963017B CN 114963017 B CN114963017 B CN 114963017B CN 202210454946 A CN202210454946 A CN 202210454946A CN 114963017 B CN114963017 B CN 114963017B
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 206
- 239000003345 natural gas Substances 0.000 title claims abstract description 103
- 238000002474 experimental method Methods 0.000 title claims abstract description 96
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 87
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 87
- 239000001257 hydrogen Substances 0.000 claims abstract description 87
- 230000001105 regulatory effect Effects 0.000 claims description 45
- 238000012360 testing method Methods 0.000 claims description 31
- 239000000463 material Substances 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 10
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000003763 carbonization Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/12—Arrangements for supervising or controlling working operations for injecting a composition into the line
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/02—Pipe-line systems for gases or vapours
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
-
- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/45—Hydrogen technologies in production processes
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Pipeline Systems (AREA)
Abstract
The invention discloses a natural gas pipeline hydrogen-adding comprehensive experiment system device, which comprises: the device comprises a hydrogen source system, a high-pressure natural gas source, a hydrogen-adding machine and an experimental pipeline system, wherein the hydrogen source system and the high-pressure natural gas source are connected with an inlet of the hydrogen-adding machine, and the experimental pipeline system is connected with an outlet of the hydrogen-adding machine; the experimental tubing system comprises: high-pressure experiment pipeline system, next high-pressure experiment pipeline system, middling pressure experiment pipeline system and low-pressure experiment pipeline system, low-pressure experiment pipeline system is connected with end user system, high-pressure experiment pipeline system next high-pressure experiment pipeline system middle-pressure experiment pipeline system with all include the 5 way pipeline branch road that connects in parallel and set up in the low-pressure experiment pipeline system. According to the invention, the natural gas pipeline hydrogen loading experiment under various pressure working conditions can be simultaneously carried out, the experimental pressure quantity is adjusted according to actual requirements, and the experimental efficiency is improved.
Description
Technical Field
The invention relates to the technical field of natural gas pipeline hydrogen loading, in particular to a natural gas pipeline hydrogen loading comprehensive experiment system device.
Background
Under the background of a double-carbon target, in order to ensure the energy demand, the energy structure is developing towards low carbonization and zero carbonization, and renewable clean energy sources such as photovoltaic, wind power and the like meet the rapid development opportunity. The hydrogen energy utilization process has no carbon emission, and meanwhile, the hydrogen can be used as an energy storage medium of unstable renewable energy sources such as photovoltaic, wind power and the like, so that the large-scale industrialized development of the renewable energy sources is promoted. The hydrogen energy needs to realize industrialized application and also needs to solve the problem of hydrogen storage and transportation.
Compared with the technologies of high-pressure gaseous hydrogen storage, low-temperature liquid hydrogen storage, organic hydrogen storage and the like, the pipeline hydrogen loading utilizes the existing natural gas pipeline, and the large-scale and low-cost transportation of the hydrogen can be realized through the partial mixing of the hydrogen and the natural gas. To realize the large-scale remote application of natural gas pipeline hydrogen loading, the problem of hydrogen loading of town gas pipeline systems should be solved first. However, because the natural gas pipeline is more loaded to the existing gas pipe network system, the actual conditions of the existing pipe network system in each region have larger difference, such as pipe materials, pipe age, pressure, surrounding environment, corrosion condition and the like, and the specific research and evaluation are required. Even for newly built pipeline systems, the soil conditions, the rock stratum structures and the climate conditions of all urban pipelines are different, and hydrogen cannot be directly added. Therefore, before pipeline hydrogen loading is carried out, scientific tests are required to be carried out on pipelines and parts through a systematic experimental test platform, and then a natural gas pipeline hydrogen loading scheme is formulated in a targeted mode on the basis.
Because town gas pipe system often is equipped with 4 grades of pressures more, and the tubular product kind that each grade pressure used is also very complicated, simultaneously, and the influence condition of taking gas pipe to the active service is carried out to the pipeline hydrogen that needs to be studied, often need carry out the experiment for a long time, and town gas hydrogen experimental system among the prior art once experiments all can only test a kind of pressure operating mode, leads to experimental efficiency lower.
Accordingly, there is a need for improvement and advancement in the art.
Disclosure of Invention
The invention aims to solve the technical problems that the natural gas pipeline hydrogen-adding comprehensive experiment system device aims to solve the problems that the town gas hydrogen-adding experiment system in the prior art only can test one pressure working condition at a time, and the experiment efficiency is low.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
in a first aspect, the present invention provides a natural gas pipeline hydrogen loading comprehensive experiment system device, which is characterized in that the device comprises: the device comprises a hydrogen source system, a high-pressure natural gas source, a hydrogen-adding machine and an experimental pipeline system, wherein the hydrogen source system and the high-pressure natural gas source are connected with an inlet of the hydrogen-adding machine, and the experimental pipeline system is connected with an outlet of the hydrogen-adding machine; the experimental tubing system comprises: high-pressure experiment pipeline system, next high-pressure experiment pipeline system, middling pressure experiment pipeline system and low-pressure experiment pipeline system, low-pressure experiment pipeline system is connected with end user system, high-pressure experiment pipeline system next high-pressure experiment pipeline system middle-pressure experiment pipeline system with all include the 5 way pipeline branch road that connects in parallel and set up in the low-pressure experiment pipeline system.
In one implementation, a natural gas flow regulating valve and a natural gas pressure regulating valve are sequentially arranged between the high-pressure natural gas source and the inlet of the hydrogen-loading machine.
In one implementation, a hydrogen flow regulating valve, a hydrogen compressor and a hydrogen pressure regulating valve are sequentially arranged between the hydrogen source system and the inlet of the hydrogen loading machine.
In one implementation, the outlet of the hydrogen-loading machine splits into two branches, wherein a first branch is connected to the inlet of the high-pressure test piping system and a second branch is connected to the inlet of the low-pressure test piping system.
In one implementation, a plurality of ball valves are provided between the second branch and the inlet of the low pressure test tubing.
In one embodiment, the outlet of the high-pressure test line system branches off into two branches, wherein a third branch is connected to the inlet of the secondary high-pressure test line system and a fourth branch is connected to the second branch.
In one implementation, the outlet of the secondary high-pressure experimental pipeline system is divided into two branches, wherein a fifth branch is connected with the inlet of the medium-pressure experimental pipeline system, and a sixth branch is connected with the second branch.
In one implementation, the outlet of the medium pressure test tubing is connected to the inlet of the low pressure test tubing.
In one implementation, two ball valves and two flanges are arranged in each pipeline branch in the high-pressure experimental pipeline system, the secondary high-pressure experimental pipeline system, the medium-pressure experimental pipeline system and the low-pressure experimental pipeline system.
In one implementation, the pipes in the high pressure test pipe system, the secondary high pressure test pipe system, the medium pressure test pipe system, and the low pressure test pipe system are pipes of different pipe ages and different pipes.
The beneficial effects are that: compared with the prior art, the invention provides a natural gas pipeline hydrogen-loading comprehensive experiment system device, which comprises: the device comprises a hydrogen source system, a high-pressure natural gas source, a hydrogen-adding machine and an experimental pipeline system, wherein the hydrogen source system and the high-pressure natural gas source are connected with an inlet of the hydrogen-adding machine, and the experimental pipeline system is connected with an outlet of the hydrogen-adding machine; the experimental tubing system comprises: high-pressure experiment pipeline system, next high-pressure experiment pipeline system, middling pressure experiment pipeline system and low-pressure experiment pipeline system, low-pressure experiment pipeline system is connected with end user system, high-pressure experiment pipeline system next high-pressure experiment pipeline system middle-pressure experiment pipeline system with all include the 5 way pipeline branch road that connects in parallel and set up in the low-pressure experiment pipeline system. According to the invention, the natural gas pipeline hydrogen loading experiment under various pressure working conditions can be simultaneously carried out, the experimental pressure quantity is adjusted according to actual requirements, and the experimental efficiency is improved.
Drawings
Fig. 1 is a schematic structural diagram of a natural gas pipeline hydrogen-loading comprehensive experiment system device according to an embodiment of the invention.
Reference numerals:
| hydrogen source system | 1 | High-pressure natural gas source | 2 |
| Natural gas flow regulating valve | 3 | Natural gas pressure regulating valve | 4 |
| Hydrogen flow regulating valve | 5 | Hydrogen compressor | 6 |
| Hydrogen pressure regulating valve | 7 | Hydrogen-loading machine | 8 |
| First ball valve | 9 | Second ball valve | 10 |
| Third ball valve | 11 | Fourth ball valve | 13 |
| Fifth ball valve | 15 | Sixth ball valve | 16 |
| Seventh ball valve | 18 | Eighth ball valve | 19 |
| Ninth ball valve | 21 | Flange | 12 |
| First hydrogen-doped natural gas pressure regulating valve | 14 | Second hydrogen-doped natural gas pressure regulating valve | 17 |
| Third hydrogen-doped natural gas pressure regulating valve | 20 | High-pressure test pipe section system | 22 |
| Sub-high pressure test tube segment system | 23 | Medium-voltage experiment pipe section system | 24 |
| Low-pressure experiment pipe section system | 25 | End user system | 26 |
Detailed Description
In order to make the objects, technical solutions and effects of the present invention clearer and more specific, the present invention will be described in further detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The embodiment provides a natural gas pipeline hydrogen loading comprehensive experiment system device, as shown in fig. 1, the device includes: the device comprises a hydrogen source system 1, a high-pressure natural gas source 2, a hydrogen-adding machine 8 and an experimental pipeline system, wherein the hydrogen source system 1 and the high-pressure natural gas source 2 are connected with an inlet of the hydrogen-adding machine 8, and the experimental pipeline system is connected with an outlet of the hydrogen-adding machine 8; the experimental tubing system comprises: high-pressure experiment pipeline system, next-highest pressure experiment pipeline system, middling pressure experiment pipeline system and low-pressure experiment pipeline system, low-pressure experiment pipeline system is connected with end user system 26, high-pressure experiment pipeline system next-highest pressure experiment pipeline system middling pressure experiment pipeline system and low-pressure experiment pipeline system are in all including parallelly connected 5 way pipeline branch road that sets up. Because the high-pressure experiment pipeline system, the secondary high-pressure experiment pipeline system, the medium-pressure experiment pipeline system and the low-pressure experiment pipeline system in the natural gas pipeline hydrogen-loading comprehensive experiment system device in the embodiment, the low-pressure experiment pipeline system can simultaneously carry out natural gas pipeline hydrogen-loading experiments under various pressure working conditions.
Specifically, in this embodiment, a natural gas flow regulating valve 3 and a natural gas pressure regulating valve 4 are sequentially disposed between the high-pressure natural gas source 2 and the inlet of the hydrogen loading machine 8, and a hydrogen flow regulating valve 5, a hydrogen compressor 6 and a hydrogen pressure regulating valve 7 are sequentially disposed between the hydrogen source system 1 and the inlet of the hydrogen loading machine 8. The outlet of the hydrogen-loading machine 8 is divided into two branches, wherein a first branch is connected with the inlet of the high-pressure experimental pipeline system, and a second branch is connected with the inlet of the low-pressure experimental pipeline system. As is evident from fig. 1, a first ball valve 9 is arranged between the first branch and the inlet of the high-pressure test tubing. A plurality of ball valves, namely a second ball valve 10, a sixth ball valve 16, an eighth ball valve 19 and a ninth ball valve 21, are arranged between the second branch and the inlet of the low-pressure experimental pipeline system.
Further, the outlet of the high-pressure experimental pipeline system is divided into two branches, wherein a third branch is connected with the inlet of the secondary high-pressure experimental pipeline system, and a fourth branch is connected with the second branch. A first hydrogen-doped natural gas pressure regulating valve 14 and a fifth ball valve 15 are sequentially arranged between the third branch and the inlet of the secondary high-pressure experimental pipeline system. The outlet of the secondary high-pressure experimental pipeline system is divided into two branches, wherein a fifth branch is connected with the inlet of the medium-pressure experimental pipeline system, and a sixth branch is connected with the second branch. A second hydrogen-doped natural gas pressure regulating valve 17 and a seventh ball valve 18 are sequentially arranged between the fifth branch and the inlet of the medium-pressure experimental pipeline system. The outlet of the medium-pressure experimental pipeline system is connected with the inlet of the low-pressure experimental pipeline system, and a third hydrogen-doped natural gas pressure regulating valve 20 is arranged between the outlet of the medium-pressure experimental pipeline system and the inlet of the low-pressure experimental pipeline system.
In this embodiment, in the high-pressure experimental pipeline system, the secondary high-pressure experimental pipeline system, the medium-pressure experimental pipeline system and the low-pressure experimental pipeline system, two ball valves (such as the third ball valve 11 and the fourth ball valve 13 in fig. 1) and two flanges are arranged in each pipeline branch. In addition, the high-pressure experimental pipeline system, the secondary high-pressure experimental pipeline system, the medium-pressure experimental pipeline system and the low-pressure experimental pipeline system in the embodiment are pipelines with different pipe ages and different pipes. Therefore, the embodiment can simultaneously carry out the natural gas pipeline hydrogen-adding experiment under various pressure working conditions, and on one hand, the pipeline system under different pressure working conditions can simultaneously carry out the experiment of different pipe ages and pipes, thereby improving the experimental efficiency; on the other hand, the natural gas compressor can be reduced, and the system investment is reduced.
The device is used for carrying out a natural gas pipeline hydrogen-adding comprehensive experiment process, and the device sequentially comprises the following working conditions and steps:
when experiments under four pressure working conditions of high pressure, secondary high pressure, medium pressure and low pressure are required to be carried out simultaneously, the ball valves (namely the second ball valve 10, the sixth ball valve 16 and the eighth ball valve 19) on the first branch are closed, so that the hydrogen-doped natural gas sequentially passes through the high-pressure experiment pipe section system 22, the secondary high-pressure experiment pipe section system 23, the medium-pressure experiment pipe section system 24 and the low-pressure experiment pipe section system 25 and then passes through the end user system 26. When only experiments under three pressure working conditions need to be carried out, the ball valve on the first branch can be opened according to requirements. When only experiments under two pressure working conditions need to be carried out, the ball valve on the first branch can be opened according to requirements. When only an experiment under one pressure working condition needs to be carried out, the ball valve on the first branch can be opened according to the requirement. It can be seen that the present embodiment can control the working conditions of the high-pressure experimental pipe section system 22, the secondary high-pressure experimental pipe section system 23, the medium-pressure experimental pipe section system 24 and the low-pressure experimental pipe section system 25 by controlling the ball valves on the first branch.
Because the high-pressure experimental pipe section system 22, the secondary high-pressure experimental pipe section system 23, the medium-pressure experimental pipe section system 24 and the low-pressure experimental pipe section system 25 are different in the types of the pipes in the flanges in the 5-path pipeline branches arranged in parallel, the outlet pressure of the inlet pressure regulating valve of each experimental pipe section system can be changed according to experimental requirements, so that the experimental functions of each experimental pipe section system can be switched. Meanwhile, the experimental pipe section system and the number of the pipeline branches arranged in parallel in the experimental pipe section system can be increased or reduced according to experimental requirements.
By way of example, example 1: taking natural gas in a certain city in the south as an example, the receiving pressure of a gate station is 4MPa, the town gas pipeline system comprises a high-pressure experimental pipeline system-4 MPa, a secondary high-pressure experimental pipeline system-1.6 MPa, a medium-pressure experimental pipeline system-0.4 MPa and a low-pressure experimental pipeline system-0.01 MPa. The pipe of the high-pressure experimental pipeline system is X65, the pipe of the secondary high-pressure experimental pipeline system is X52, the pipe of the medium-pressure experimental pipeline system is X42 and PE100, and the pipe of the low-pressure experimental pipeline system is 20 # steel. In order to develop the adaptability of natural gas pipeline hydrogen loading to the existing gas pipeline system. And building a natural gas pipeline hydrogen-adding comprehensive experiment system containing four-stage pressure. The bypass is led out through a high-pressure pipeline of the door station to obtain a high-pressure natural gas source 2, the pressure is regulated to be 4MPa through a natural gas pressure regulating valve 4, and hydrogen is regulated to be 4MPa from a hydrogen cylinder group through a hydrogen compressor 6 and a hydrogen pressure regulating valve 7 and then is mixed with the natural gas of 4MPa in a hydrogen adding machine 8. The hydrogen flow rate and the natural gas flow rate are adjusted in real time by the hydrogen flow rate adjusting valve 5 and the natural gas flow rate adjusting valve 3 through the PLC control cabinet according to the real-time hydrogen consumption and the set experimental hydrogen loading ratio of the downstream end user system 26. The second ball valve 10, the sixth ball valve 16 and the eighth ball valve 19 are closed, and the first ball valve 9, the fifth ball valve 15, the seventh ball valve 18, the ninth ball valve 21, the high-pressure experimental pipe system, the secondary high-pressure experimental pipe system 23, the medium-pressure experimental pipe system 24 and the low-pressure experimental pipe system 25 are opened. The natural gas added with hydrogen at the outlet of the hydrogen adding machine 8 enters a high-pressure experimental pipeline system after passing through a first ball valve 9, and respectively passes through 5 pipeline branches which are connected in parallel. The experimental pipe section pipes of the high-pressure experimental pipe system are all X65, and the pipe ages are respectively 0 year, 5 years, 15 years, 25 years and 35 years. The hydrogen-doped natural gas at the outlet of the high-pressure experimental pipeline system is regulated to 1.6MPa through a first hydrogen-doped natural gas pressure regulating valve 14, is led to a secondary high-pressure experimental pipeline system 23 through a fifth ball valve 15, and respectively passes through 5 pipeline branches in parallel connection. The experimental pipe section pipes of the secondary high-pressure experimental pipe system are all X52, and the pipe ages are respectively 0 year, 5 years, 15 years, 25 years and 35 years. And the hydrogen-doped natural gas at the outlet of the secondary high-pressure experimental pipeline system is regulated to 0.4MPa by a second hydrogen-doped natural gas pressure regulating valve 17, is introduced into the middle-pressure experimental pipeline system by a seventh ball valve 18, and respectively passes through 5 pipeline branches in parallel connection. The pipe 5 paths of the experimental pipeline system of the medium-pressure experimental pipeline system are X42, and the pipe ages are respectively 0 year, 3 years, 6 years, 9 years and 12 years. The outlet of the medium-pressure experiment pipeline system is filled with natural gas, the natural gas is regulated to 0.01MPa through a third natural gas filling pressure regulating valve 20, and then is led to the low-pressure experiment pipeline system through a ninth ball valve 21, and the natural gas is respectively led to 5 pipeline branches in parallel. The experimental pipe section pipes of the low-pressure experimental pipe system are all made of No. 20 steel, and the pipe ages are respectively 0 year, 3 years, 6 years, 9 years and 12 years. The low pressure test tubing outlet hydrogen loaded natural gas is passed to end user system 26.
Example 2: taking natural gas in a certain city in the south as an example, the receiving pressure of a gate station is 4MPa, the town gas pipeline system comprises a high-pressure experimental pipeline system-4 MPa, a secondary high-pressure experimental pipeline system-1.6 MPa, a medium-pressure experimental pipeline system-0.4 MPa and a low-pressure experimental pipeline system-0.01 MPa. The pipe of the high-pressure experimental pipeline system is X65, the pipe of the secondary high-pressure experimental pipeline system is X52, the pipe of the medium-pressure experimental pipeline system is X42 and PE100, and the pipe of the low-pressure experimental pipeline system is 20 # steel. Due to the fact that the high-pressure gas pipeline system is too long in tube age, the adaptability research is not considered. And constructing a natural gas pipeline hydrogen-adding comprehensive experiment system containing three-stage pressure. The bypass is led out through a high-pressure pipeline of the door station to obtain a high-pressure natural gas source 2, the pressure is regulated to be 1.6MPa through a natural gas pressure regulating valve 4, and hydrogen is regulated to be 1.6MPa from a hydrogen cylinder group through a hydrogen compressor 6 and a hydrogen pressure regulating valve 7 and then is mixed with the natural gas of 1.6MPa in a hydrogen adding machine 8. The hydrogen flow rate and the natural gas flow rate are adjusted in real time by the hydrogen flow rate adjusting valve 5 and the natural gas flow rate adjusting valve 3 through the PLC control cabinet according to the real-time hydrogen consumption and the set experimental hydrogen loading ratio of the downstream end user system 26.
The first ball valve 9, the sixth ball valve 16 and the eighth ball valve 19 are closed, the second ball valve 10, the fifth ball valve 15, the seventh ball valve 18, the ninth ball valve 21, the secondary high-pressure experimental pipe section system 23, the medium-pressure experimental pipe section system 24 and the low-pressure experimental pipe section system 25 are opened. After passing through the second ball valve 10, the natural gas is fed into the secondary high-pressure experimental pipeline system through the fifth ball valve 15 after the stable pressure is 1.6MPa, and the natural gas passes through the first natural gas feeding pressure regulating valve 14 and then passes through the 5 pipeline branches in parallel. The pipes of the experimental pipeline system of the secondary high-pressure experimental pipeline system are all X52, and the pipe ages are respectively 0 year, 5 years, 15 years, 25 years and 35 years. And the hydrogen-doped natural gas at the outlet of the secondary high-pressure experimental pipeline system is regulated to 0.4MPa by a second hydrogen-doped natural gas pressure regulating valve 17, is introduced into the middle-pressure experimental pipeline system by a seventh ball valve 18, and respectively passes through 5 pipeline branches in parallel connection. The pipe 5 paths of the experimental pipeline system of the medium-pressure experimental pipeline system are X42, and the pipe ages are respectively 0 year, 3 years, 6 years, 9 years and 12 years. The outlet of the medium-pressure experiment pipeline system is filled with natural gas, the natural gas is regulated to 0.01MPa through a third natural gas filling pressure regulating valve 20, and then is led to the low-pressure experiment pipeline system through a ninth ball valve 21, and the natural gas is respectively led to 5 pipeline branches in parallel. The pipes of the experimental pipeline system of the low-pressure experimental pipeline system are all 20-grade steel, and the pipe ages are respectively 0 year, 3 years, 6 years, 9 years and 12 years. The low pressure test tubing outlet hydrogen loaded natural gas is passed to end user system 26.
Compared with the prior art, the embodiment has the following beneficial effects: according to the embodiment, the natural gas pipeline hydrogen loading experiment under various pressure working conditions can be performed simultaneously, the experiment pressure quantity is adjusted according to actual requirements, and the experiment efficiency is improved. According to the embodiment, hydrogen loading experiments can be carried out on pipelines with different pipe ages and different pipes, the number of pipeline samples can be adjusted according to actual requirements, and the experimental efficiency is improved. The embodiment can extract a section of pipeline for sampling analysis at any time in the middle of experiments, does not influence the operation of the whole experimental system, and improves the experimental efficiency. According to the embodiment, the experiment is carried out by utilizing the self-contained pressure of the high-pressure natural gas received by the natural gas valve station, so that the natural gas compressor which is additionally arranged in order to adjust the natural gas pressure in a traditional experiment system is reduced, and the system investment is reduced.
In summary, the invention discloses a natural gas pipeline hydrogen-adding comprehensive experiment system device, which comprises: the device comprises a hydrogen source system 1, a high-pressure natural gas source 2, a hydrogen-adding machine 8 and an experimental pipeline system, wherein the hydrogen source system 1 and the high-pressure natural gas source 2 are connected with an inlet of the hydrogen-adding machine 8, and the experimental pipeline system is connected with an outlet of the hydrogen-adding machine 8; the experimental tubing system comprises: high-pressure experiment pipeline system, next-highest pressure experiment pipeline system, middling pressure experiment pipeline system and low-pressure experiment pipeline system, low-pressure experiment pipeline system is connected with end user system 26, high-pressure experiment pipeline system next-highest pressure experiment pipeline system middling pressure experiment pipeline system and low-pressure experiment pipeline system are in all including parallelly connected 5 way pipeline branch road that sets up. According to the invention, the natural gas pipeline hydrogen loading experiment under various pressure working conditions can be simultaneously carried out, the experimental pressure quantity is adjusted according to actual requirements, and the experimental efficiency is improved.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (5)
1. A natural gas pipeline hydrogen loading comprehensive experiment system device, characterized in that the device comprises: the device comprises a hydrogen source system, a high-pressure natural gas source, a hydrogen-adding machine and an experimental pipeline system, wherein the hydrogen source system and the high-pressure natural gas source are connected with an inlet of the hydrogen-adding machine, and the experimental pipeline system is connected with an outlet of the hydrogen-adding machine; the experimental tubing system comprises: the system comprises a high-pressure experimental pipeline system, a secondary high-pressure experimental pipeline system, a medium-pressure experimental pipeline system and a low-pressure experimental pipeline system, wherein the low-pressure experimental pipeline system is connected with an end user system, and the high-pressure experimental pipeline system, the secondary high-pressure experimental pipeline system, the medium-pressure experimental pipeline system and the low-pressure experimental pipeline system all comprise 5 pipeline branches which are arranged in parallel;
the outlet of the hydrogen-adding machine is divided into two branches, wherein a first branch is connected with the inlet of the high-pressure experimental pipeline system, and a second branch is connected with the inlet of the low-pressure experimental pipeline system; a first ball valve is arranged between the first branch and an inlet of the high-pressure experimental pipeline system;
a plurality of ball valves, namely a second ball valve, a sixth ball valve, an eighth ball valve and a ninth ball valve, are arranged between the second branch and the inlet of the low-pressure experimental pipeline system;
the outlet of the high-pressure experimental pipeline system is divided into two branches, wherein a third branch is connected with the inlet of the secondary high-pressure experimental pipeline system, and a fourth branch is connected with the second branch; a first hydrogen-doped natural gas pressure regulating valve and a fifth ball valve are sequentially arranged between the third branch and the inlet of the secondary high-pressure experimental pipeline system;
the outlet of the secondary high-pressure experimental pipeline system is divided into two branches, wherein a fifth branch is connected with the inlet of the medium-pressure experimental pipeline system, and a sixth branch is connected with the second branch; a second hydrogen-doped natural gas pressure regulating valve and a seventh ball valve are sequentially arranged between the fifth branch and the inlet of the medium-pressure experimental pipeline system;
the outlet of the medium-pressure experimental pipeline system is connected with the inlet of the low-pressure experimental pipeline system; and a third hydrogen-doped natural gas pressure regulating valve is arranged between the outlet of the medium-pressure experimental pipeline system and the inlet of the low-pressure experimental pipeline system.
2. The integrated test system device for hydrogen loading of natural gas pipeline according to claim 1, wherein a natural gas flow regulating valve and a natural gas pressure regulating valve are sequentially arranged between the high-pressure natural gas source and the inlet of the hydrogen loading machine.
3. The integrated experimental system device for hydrogen loading of natural gas pipeline according to claim 1, wherein a hydrogen flow regulating valve, a hydrogen compressor and a hydrogen pressure regulating valve are sequentially arranged between the hydrogen source system and the inlet of the hydrogen loading machine.
4. The integrated test system device for hydrogen loading of natural gas pipelines according to claim 1, wherein two ball valves and two flanges are arranged in each pipeline branch in the high-pressure test pipeline system, the secondary high-pressure test pipeline system, the medium-pressure test pipeline system and the low-pressure test pipeline system.
5. The integrated natural gas pipeline hydrogen loading test system device of claim 1, wherein the pipelines in the high-pressure test pipeline system, the secondary high-pressure test pipeline system, the medium-pressure test pipeline system and the low-pressure test pipeline system are pipelines with different pipe ages and different pipe materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210454946.XA CN114963017B (en) | 2022-04-24 | 2022-04-24 | Natural gas line hydrogen-adding comprehensive experiment system device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202210454946.XA CN114963017B (en) | 2022-04-24 | 2022-04-24 | Natural gas line hydrogen-adding comprehensive experiment system device |
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