CN220186538U - Natural gas hydrogen-adding gas mixing system - Google Patents
Natural gas hydrogen-adding gas mixing system Download PDFInfo
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- CN220186538U CN220186538U CN202321946417.8U CN202321946417U CN220186538U CN 220186538 U CN220186538 U CN 220186538U CN 202321946417 U CN202321946417 U CN 202321946417U CN 220186538 U CN220186538 U CN 220186538U
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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
- 239000007789 gas Substances 0.000 title claims abstract description 59
- 238000002156 mixing Methods 0.000 title claims abstract description 30
- 239000001257 hydrogen Substances 0.000 claims abstract description 128
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 128
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 115
- 230000001105 regulatory effect Effects 0.000 claims abstract description 73
- 150000002431 hydrogen Chemical class 0.000 claims abstract description 15
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 39
- 238000012544 monitoring process Methods 0.000 claims description 28
- 238000011065 in-situ storage Methods 0.000 claims description 26
- 229910052757 nitrogen Inorganic materials 0.000 claims description 19
- 238000009530 blood pressure measurement Methods 0.000 claims description 10
- 238000001514 detection method Methods 0.000 claims description 7
- 239000010865 sewage Substances 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 5
- 239000012535 impurity Substances 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
Landscapes
- Accessories For Mixers (AREA)
Abstract
The utility model provides a natural gas hydrogen-adding gas mixing system, which comprises a natural gas regulating manifold, wherein the natural gas regulating manifold is used for regulating the flow and pressure of natural gas, the inlet end of the natural gas regulating manifold is connected with a natural gas pipeline, the gas is connected with a gas mixer after passing through a natural gas regulating valve, the hydrogen regulating manifold is used for regulating the flow and pressure of hydrogen, the inlet end of the natural gas regulating manifold is connected with a mobile hydrogen source or a hydrogen conveying pipeline, the gas is connected with the gas mixer after being regulated by a rough regulating valve and a hydrogen fine regulating valve, and a first hydrogen concentration analyzer monitors the concentration of hydrogen and feeds back a signal to interlock the opening of the hydrogen fine regulating valve so as to accurately control the mixing proportion of mixed gas hydrogen; the method solves the problems that the hydrogen mixed in a small proportion is difficult to mix with natural gas accurately and uniformly due to low mixing proportion of hydrogen and low stability of inlet pressure.
Description
Technical Field
The utility model relates to the technical field of gas filling, in particular to a natural gas hydrogen-adding gas mixing system.
Background
The natural gas hydrogen-adding technology is to add hydrogen with a certain volume ratio into natural gas to form hydrogen-adding natural gas, which can be conveyed through the existing natural gas pipeline, and can also be used for mixing natural gas and hydrogen before an end user along with the construction and development of long-distance hydrogen conveying pipelines in China. The hydrogen is doped into the natural gas, so that the combustion efficiency of the mixed gas can be improved, the emission of harmful gases such as carbon dioxide and the like can be reduced, the digestion capacity of the hydrogen can be improved, the energy supply stability can be improved, the energy cost can be reduced, and the smooth implementation of green energy development in China can be facilitated.
The key point of the natural gas hydrogen adding technology is how to accurately control the hydrogen adding proportion, based on the current technology, the hydrogen adding proportion is below 20%, most of the hydrogen adding proportion of the existing examples is below 10% or even lower, the gas flow regulating mode of the existing natural gas hydrogen adding technology mainly adopts the valve back pressure feedback interlocking valve opening degree to achieve flow control, and because the hydrogen adding proportion is low, the inlet pressure stability is not high, and how to accurately and uniformly mix the hydrogen mixed in a small proportion with the natural gas is the basis for ensuring the safety and high-efficiency application of the technology and the problem to be solved urgently.
Disclosure of Invention
The utility model aims to provide a natural gas hydrogen-adding gas mixing system, which solves the problems that the inlet pressure stability is not high due to low hydrogen mixing proportion, so that the hydrogen mixed in a small proportion is difficult to mix with natural gas accurately and uniformly, and the like.
The embodiment of the utility model is realized by the following technical scheme: the natural gas hydrogen-adding gas mixing system comprises a natural gas regulating manifold, wherein the input end of the natural gas regulating manifold is communicated with a natural gas supply pipeline, and the natural gas regulating manifold mainly comprises a first manual shut-off valve, a first electromagnetic shut-off valve, a natural gas filter, a natural gas regulating valve, a first flowmeter and a first check valve which are communicated in sequence;
the input end of the hydrogen regulating manifold is communicated with a hydrogen supply pipeline, and the hydrogen regulating manifold mainly comprises a second manual shut-off valve, a second electromagnetic shut-off valve, a hydrogen filter, a hydrogen rough regulating valve, a second flowmeter, a hydrogen fine regulating valve and a second check valve which are communicated in sequence;
the output ends of the natural gas regulating manifold and the hydrogen regulating manifold are communicated with the input end of the gas mixer;
the mixed gas exhaust manifold is communicated with the output end of the gas mixer at the input end and mainly comprises a first hydrogen concentration analyzer, a first natural gas concentration analyzer, a heat value analyzer and a third manual shutoff valve which are communicated in sequence;
and the sewage manifold is respectively communicated with the natural gas filter, the hydrogen filter and the gas mixer through three pipelines with sewage valves and is used for collecting impurities and water generated by the three pipelines.
Further, the system also comprises a leakage alarm and a second hydrogen concentration analyzer, wherein the leakage alarm and the second hydrogen concentration analyzer are arranged on a pipeline between the second check valve and the gas mixer.
Further, the system also comprises a first safety release valve net and a second safety release valve net, wherein the first safety release valve net is communicated with pipelines at two ends of the natural gas regulating valve; the second safety release valve net is communicated with pipelines at two ends of the hydrogen rough regulating valve;
the first safety release valve net and the second safety release valve net have the same structure, the first safety release valve net comprises two groups of sub safety release valve nets and a pipeline outlet muffler which are connected in parallel, and the pipeline outlet muffler is communicated with pipelines between the two groups of sub safety release valve nets through a pipeline;
the sub-safety relief valve network includes a safety valve and a first bypass shut-off valve in parallel.
Further, the system also comprises a first in-situ pressure difference meter, and the natural gas filter and the hydrogen filter are connected with the first in-situ pressure difference meter in parallel.
Further, the natural gas filter further comprises a nitrogen manifold, and the nitrogen manifold is communicated between the first electromagnetic cut-off valve and the natural gas filter; the nitrogen manifold is communicated between the second electromagnetic cut-off valve and the hydrogen filter;
the input of nitrogen manifold is connected with nitrogen gas air feed end, the nitrogen manifold is including second bypass shutoff valve and the third check valve of intercommunication in proper order.
Further, the system also comprises a differential pressure measuring manifold, wherein one end of the differential pressure measuring manifold is communicated with a pipeline between the first check valve and the gas mixer, and the other end of the differential pressure measuring manifold is communicated with a pipeline between the first hydrogen concentration analyzer and the gas mixer;
and the differential pressure measuring manifold is communicated with a differential pressure transmitter and a second in-situ differential pressure meter.
Further, the system also comprises a temperature and pressure monitoring assembly, wherein the temperature and pressure monitoring assembly is arranged on a pipeline between the natural gas supply pipeline and the first manual shutoff valve; the temperature and pressure monitoring assembly is arranged on a pipeline between the first check valve and the differential pressure measurement manifold;
the temperature and pressure monitoring assembly is arranged on a pipeline between the hydrogen supply pipeline and the second manual shutoff valve; the temperature and pressure monitoring assembly is arranged on a pipeline between the second check valve and the second hydrogen concentration analyzer;
and the temperature and pressure monitoring assembly is arranged on a pipeline between the differential pressure measuring manifold and the first hydrogen concentration analyzer.
Further, the temperature and pressure monitoring assembly comprises a temperature detection assembly and a pressure detection assembly which are connected in series;
the temperature detection assembly comprises a temperature detector and an in-situ thermometer which are arranged in parallel;
the pressure detection assembly comprises a pressure transmitter and an in-situ pressure gauge which are arranged in parallel.
The technical scheme of the embodiment of the utility model has at least the following advantages and beneficial effects:
the natural gas regulating manifold is used for regulating the flow and pressure of natural gas, the inlet end of the natural gas regulating manifold is connected with a natural gas pipeline, the gas is connected with a gas mixer after passing through a natural gas regulating valve, the hydrogen regulating manifold is used for regulating the flow and pressure of hydrogen, the inlet end of the natural gas regulating manifold is connected with a mobile hydrogen source or a hydrogen conveying pipeline, the gas is connected with the gas mixer after being regulated by a rough regulating valve and a hydrogen fine regulating valve, and the opening of the hydrogen fine regulating valve is monitored by a first hydrogen concentration analyzer and interlocked by a feedback signal so as to accurately control the mixing proportion of mixed gas hydrogen.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a natural gas hydrogen blending system according to the present utility model;
FIG. 2 is a schematic diagram of a first safety release valve net in a natural gas-based hydrogen blending system according to the present utility model;
FIG. 3 is a schematic diagram of a temperature and pressure monitoring assembly in a natural gas-based hydrogen blending system according to the present utility model;
icon: 100. natural gas regulator manifold, 101, first manual shut-off valve, 102, first solenoid shut-off valve, 103, natural gas filter, 104, natural gas regulator valve, 105, first flowmeter, 106, first check valve, 107, first safety relief valve net, 108, sub safety relief valve net, 1081, safety valve, 1082, first bypass shut-off valve, 109, pipe outlet muffler,
200. a hydrogen regulating manifold, 201, a second manual shut-off valve, 202, a second electromagnetic shut-off valve, 203, a hydrogen filter, 204, a hydrogen rough regulating valve, 205, a second flowmeter, 206, a hydrogen fine regulating valve, 207, a second check valve, 208, a leakage alarm, 209, a second hydrogen concentration analyzer, 210, a second safety release valve net,
300. a gas mixer 310, a differential pressure measurement manifold 311, a differential pressure transmitter 312, a second in-situ differential pressure meter,
400. a mixed gas discharging manifold 401, a first hydrogen concentration analyzer 402, a first natural gas concentration analyzer 403, a heating value analyzer 404, a third manual shutoff valve,
500. a drain manifold, 501, a drain valve,
600. a first in-situ differential pressure gauge,
700. nitrogen manifold, 701, second bypass shutoff valve, third check valve,
800. temperature and pressure monitoring components 810, temperature detection components 811, temperature detectors 812, in-situ thermometers, 820, pressure detection components 821, pressure transmitters 822, in-situ pressure gauges.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1 to 3, the present embodiment provides a natural gas hydrogen-loading gas mixing system, which includes a natural gas regulating manifold 100, an input end of which is communicated with a natural gas supply pipeline, the natural gas regulating manifold 100 mainly includes a first manual shut-off valve 101, a first electromagnetic shut-off valve 102, a natural gas filter 103, a natural gas regulating valve 104, a first flowmeter 105 and a first check valve 106 which are sequentially communicated, and the first check valve 106 ensures that mixed gas does not flow back to the inlet pipeline, thereby affecting the safety of the system; the natural gas regulator manifold 100 is used to regulate the flow and pressure of natural gas, and has an inlet end connected to a natural gas line, and the gas is connected to a static mixing device after passing through a natural gas regulator valve 104.
The input end of the hydrogen regulating manifold 200 is communicated with a hydrogen supply pipeline, and mainly comprises a second manual shutoff valve 201, a second electromagnetic shutoff valve 202, a hydrogen filter 203, a hydrogen rough regulating valve 204, a second flowmeter 205, a hydrogen fine regulating valve 206 and a second check valve 207 which are sequentially communicated, wherein the second check valve 207 ensures that mixed gas cannot flow back to the inlet pipeline, and the safety of the system is influenced; the hydrogen regulating manifold 200 is used for regulating the flow and pressure of hydrogen, the inlet end of the hydrogen regulating manifold is connected with a mobile hydrogen source or a hydrogen conveying pipeline, and the gas is connected with a static mixing device after being regulated by a rough regulating valve 204 and a hydrogen fine regulating valve 206.
Further, the first manual shut-off valve 101, the first electromagnetic shut-off valve 102, the second manual shut-off valve 201 and the second electromagnetic shut-off valve 202 can rapidly close the air source inlet pipes when dangerous conditions such as leakage occur in the system.
Meanwhile, the natural gas filter 103 and the hydrogen gas filter 203 are used to filter impurities and moisture in the natural gas and hydrogen gas.
The gas mixer 300 is a static mixing device, and the output ends of the natural gas regulating manifold 100 and the hydrogen regulating manifold 200 are communicated with the input end of the gas mixer 300; the method is mainly used for fully mixing natural gas and hydrogen. The gas mixer 300 is used as a mixing place of hydrogen and natural gas, can improve the uniformity of mixed gas, ensures that the flow and the pressure of the mixed gas reach stable values, and meets the requirements of downstream users.
As shown in fig. 1, the gas mixture exhaust manifold 400, the input end of which is communicated with the output end of the gas mixer 300, mainly comprises a first hydrogen concentration analyzer 401, a first natural gas concentration analyzer 402, a heating value analyzer 403 and a third manual shut-off valve 404 which are communicated in sequence; in specific implementation, the first hydrogen concentration analyzer 401 monitors the hydrogen concentration and feeds back a signal to interlock the opening of the hydrogen fine adjustment valve 206, so as to precisely control the mixing ratio of the mixed gas hydrogen.
More specifically, the sewage manifold 500 is respectively communicated with the natural gas filter 103, the hydrogen filter 203 and the gas mixer 300 through three pipelines with sewage valves 501, and is used for collecting impurities, moisture and the like generated by the three pipelines, and conveying the impurities, the moisture and the like to a waste collection place for unified treatment.
Also included are a leak alarm 208 and a second hydrogen concentration analyzer 209, the leak alarm 208 and the second hydrogen concentration analyzer 209 each being disposed on a line between the second check valve 207 and the gas mixer 300. In particular, the leakage alarm 208 can detect whether hydrogen leaks, so as to ensure a safe production environment, and the second hydrogen concentration analyzer 209 can detect the concentration of the input hydrogen, so as to provide good feedback for the accuracy of the subsequent hydrogen.
More specifically, the system further comprises a first safety release valve net 107 and a second safety release valve net 210, wherein the first safety release valve net 107 is communicated with pipelines at two ends of the natural gas regulating valve 104; the second safety release valve net 210 is communicated with pipelines at two ends of the hydrogen rough regulating valve 204;
the first safety release valve net 107 has the same structure as the second safety release valve net 210, the first safety release valve net 107 comprises two groups of sub-safety release valve nets 108 and a pipeline outlet muffler 109 which are connected in parallel, and the pipeline outlet muffler 109 is communicated with pipelines between the two groups of sub-safety release valve nets 108 through a pipeline; the sub-safety relief valve network 108 includes a safety valve 1081 and a first bypass-shutoff valve 1082 in parallel. When the system pipeline, namely the pipeline positioned at the two ends of the natural gas regulating valve 104 and the pipeline positioned at the two ends of the hydrogen rough regulating valve 204 are overpressured, the corresponding safety valve 1081 is opened, the system pressure is reduced, the safety is ensured, and if the pressure can not be reduced to a safe value after the safety valve 1081 is opened, the first bypass shutoff valve 1082 is opened manually immediately.
The system further comprises a first in-situ differential pressure meter 600, wherein the natural gas filter 103 and the hydrogen filter 203 are connected in parallel with the first in-situ differential pressure meter 600, and the first in-situ differential pressure meter is used for respectively measuring the differential pressure of natural gas and hydrogen passing through the natural gas filter 103 and the hydrogen filter 203 and monitoring the blocking condition of the filter screen.
As shown in fig. 1, the device further comprises a nitrogen manifold 700, and the nitrogen manifold 700 is communicated between the first electromagnetic cut-off valve 102 and the natural gas filter 103; a nitrogen manifold 700 is communicated between the second electromagnetic shut-off valve 202 and the hydrogen filter 203; an input end of the nitrogen manifold 700 is communicated with a nitrogen supply end, and the nitrogen manifold 700 comprises a second bypass shutoff valve 701 and a third check valve 703 which are communicated in sequence.
In the specific implementation, when the system is overhauled or stopped, nitrogen is introduced to remove residual natural gas and hydrogen in the system.
As shown in fig. 1, the apparatus further comprises a differential pressure measurement manifold 310, wherein one end of the differential pressure measurement manifold 310 is communicated with a pipeline between the first check valve 106 and the gas mixer 300, and the other end of the differential pressure measurement manifold is communicated with a pipeline between the first hydrogen concentration analyzer 401 and the gas mixer 300;
in specific implementation, the differential pressure measuring manifold 310 is provided with a differential pressure transmitter 311 and a second in-situ differential pressure meter 312 in communication, so as to count and measure the differential pressure of the natural gas after mixing, and further monitor the pressure loss.
As shown in fig. 1 and 3, the system further comprises a temperature and pressure monitoring assembly 800, wherein the temperature and pressure monitoring assembly 800 is arranged on a pipeline between the natural gas supply pipeline and the first manual shutoff valve 101; a temperature and pressure monitoring assembly 800 is disposed on the conduit between the first check valve 106 and the differential pressure measurement manifold 310; in specific implementation, the inlet end of the natural gas regulating manifold 100 is provided with a temperature detector 811, an in-situ thermometer 812, a pressure transmitter 821 and an in-situ pressure gauge 822 for monitoring the gas inlet state, the outlet end is also provided with the temperature detector 811, the in-situ thermometer 812, the pressure transmitter 821 and the in-situ pressure gauge 822, the pressure transmitter 821 at the outlet end is used for feeding back signals to interlock the natural gas regulating valve 104 to act, the pressure and the flow of the natural gas at the inlet of the gas mixer 300 are ensured, and the outlet end of the natural gas regulating valve 104 is provided with the first flowmeter 105 for monitoring the natural gas flow.
Further, a temperature and pressure monitoring component 800 is arranged on the pipeline between the hydrogen supply pipeline and the second manual shutoff valve 201; a temperature and pressure monitoring assembly 800 is arranged on the pipeline between the second check valve 207 and the second hydrogen concentration analyzer 209; in specific implementation, the inlet end of the hydrogen regulating manifold 200 is provided with a temperature detector 811, an in-situ thermometer 812, a pressure transmitter 821 and an in-situ pressure gauge 822 for monitoring the gas inlet state, the outlet end is also provided with the temperature detector 811, the in-situ thermometer 812, the pressure transmitter 821 and the in-situ pressure gauge 822, the pressure transmitter 821 at the outlet end is used for feeding back signals to interlock the hydrogen rough regulating valve 204 to act so as to regulate the pressure and flow of hydrogen, the pressure and flow of hydrogen are primarily satisfied, the pressure of hydrogen is larger than the natural pressure at the inlet of the gas mixer 300 by 0.05MPa to 0.1MPa, and the outlet end of the hydrogen rough regulating valve 204 is provided with a second flowmeter 205 for monitoring the flow of hydrogen.
As shown in fig. 1, a temperature and pressure monitoring assembly 800 is provided on the pipe between the differential pressure measurement manifold 310 and the first hydrogen concentration analyzer 401. In practice, the temperature and pressure monitoring assembly 800 is used to detect the temperature and pressure values and changes of the mixed gas.
The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (8)
1. The natural gas hydrogen-adding gas mixing system is characterized by comprising a natural gas regulating manifold (100), wherein the input end of the natural gas regulating manifold is communicated with a natural gas supply pipeline, and the natural gas regulating manifold (100) mainly comprises a first manual shut-off valve (101), a first electromagnetic shut-off valve (102), a natural gas filter (103), a natural gas regulating valve (104), a first flowmeter (105) and a first check valve (106) which are communicated in sequence;
the input end of the hydrogen regulating manifold (200) is communicated with a hydrogen supply pipeline, and mainly comprises a second manual shut-off valve (201), a second electromagnetic shut-off valve (202), a hydrogen filter (203), a hydrogen rough regulating valve (204), a second flowmeter (205), a hydrogen fine regulating valve (206) and a second check valve (207) which are communicated in sequence;
the output ends of the natural gas regulating manifold (100) and the hydrogen regulating manifold (200) are communicated with the input end of the gas mixer (300);
the mixed gas discharging manifold (400) is communicated with the output end of the gas mixer (300) at the input end and mainly comprises a first hydrogen concentration analyzer (401), a first natural gas concentration analyzer (402), a heat value analyzer (403) and a third manual shutoff valve (404) which are communicated in sequence;
the sewage manifold (500) is respectively communicated with the natural gas filter (103), the hydrogen filter (203) and the gas mixer (300) through three pipelines with sewage valves (501) and is used for collecting impurities and water generated by the three pipelines.
2. A natural gas hydrogen blending system according to claim 1, further comprising a leak alarm (208) and a second hydrogen concentration analyzer (209), the leak alarm (208) and second hydrogen concentration analyzer (209) each being disposed in a line between the second check valve (207) and the gas mixer (300).
3. The natural gas hydrogen blending system of claim 2, further comprising a first safety relief valve net (107) and a second safety relief valve net (210), the first safety relief valve net (107) being in communication with a pipeline across the natural gas regulator valve (104); the second safety release valve net (210) is communicated with pipelines at two ends of the hydrogen rough regulating valve (204);
the first safety release valve net (107) has the same structure as the second safety release valve net (210), the first safety release valve net (107) comprises two groups of sub-safety release valve nets (108) and a pipeline outlet muffler (109) which are connected in parallel, and the pipeline outlet muffler (109) is communicated with pipelines between the two groups of sub-safety release valve nets (108) through a pipeline;
the sub-safety relief valve network (108) includes a safety valve (1081) and a first bypass shut-off valve (1082) in parallel.
4. A natural gas hydrogen blending system according to claim 3, further comprising a first in-situ differential pressure gauge (600), wherein the first in-situ differential pressure gauge (600) is connected in parallel to both the natural gas filter (103) and the hydrogen filter (203).
5. The natural gas hydrogen blending system of claim 4, further comprising a nitrogen manifold (700), wherein the nitrogen manifold (700) is in communication between the first electromagnetic shut-off valve (102) and the natural gas filter (103); the second electromagnetic cut-off valve (202) is communicated with the hydrogen filter (203) through the nitrogen manifold (700);
the input end of the nitrogen manifold (700) is communicated with the nitrogen supply end, and the nitrogen manifold (700) comprises a second bypass shutoff valve (701) and a third check valve (703) which are sequentially communicated.
6. A natural gas hydrogen blending system according to claim 5, further comprising a differential pressure measurement manifold (310), said differential pressure measurement manifold (310) having one end in communication with a line between said first check valve (106) and gas mixer (300) and the other end in communication with a line between said first hydrogen concentration analyzer (401) and gas mixer (300);
and the differential pressure measuring manifold (310) is communicated with a differential pressure transmitter (311) and a second in-situ differential pressure meter (312).
7. The natural gas hydrogen blending system of claim 6, further comprising a warm-pressure monitoring assembly (800), said warm-pressure monitoring assembly (800) being disposed on a conduit between said natural gas supply conduit and said first manual shut-off valve (101); the temperature and pressure monitoring assembly (800) is arranged on a pipeline between the first check valve (106) and the differential pressure measurement manifold (310);
the temperature and pressure monitoring assembly (800) is arranged on a pipeline between the hydrogen supply pipeline and the second manual shutoff valve (201); the temperature and pressure monitoring assembly (800) is arranged on a pipeline between the second check valve (207) and the second hydrogen concentration analyzer (209);
the temperature and pressure monitoring assembly (800) is arranged on a pipeline between the differential pressure measuring manifold (310) and the first hydrogen concentration analyzer (401).
8. The natural gas hydrogen blending system of claim 7, wherein the temperature and pressure monitoring assembly (800) comprises a temperature sensing assembly (810) and a pressure sensing assembly (820) in series;
the temperature detection assembly (810) comprises a temperature detector (811) and an in-situ thermometer (812) arranged in parallel;
the pressure sensing assembly (820) includes a pressure transmitter (821) and an in-situ pressure gauge (822) disposed in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321946417.8U CN220186538U (en) | 2023-07-21 | 2023-07-21 | Natural gas hydrogen-adding gas mixing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321946417.8U CN220186538U (en) | 2023-07-21 | 2023-07-21 | Natural gas hydrogen-adding gas mixing system |
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| Publication Number | Publication Date |
|---|---|
| CN220186538U true CN220186538U (en) | 2023-12-15 |
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| CN202321946417.8U Active CN220186538U (en) | 2023-07-21 | 2023-07-21 | Natural gas hydrogen-adding gas mixing system |
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| CN (1) | CN220186538U (en) |
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- 2023-07-21 CN CN202321946417.8U patent/CN220186538U/en active Active
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| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: Room 402, No. 1 Cuiying Street, Nansha District, Guangzhou City, Guangdong Province 511458, self-made room 056 Patentee after: Guangdong Haien Energy Technology Co.,Ltd. Address before: Room 402, No. 1 Cuiying Street, Nansha District, Guangzhou City, Guangdong Province 511458, self-made room 056 Patentee before: Guangzhou Hain Energy Technology Co.,Ltd. |