CN216715867U - Simulation device for hydrogen-doped natural gas pipe network - Google Patents
Simulation device for hydrogen-doped natural gas pipe network Download PDFInfo
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- CN216715867U CN216715867U CN202220179195.0U CN202220179195U CN216715867U CN 216715867 U CN216715867 U CN 216715867U CN 202220179195 U CN202220179195 U CN 202220179195U CN 216715867 U CN216715867 U CN 216715867U
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Abstract
A simulation device for a hydrogen-doped natural gas pipe network relates to the technical field of natural gas hydrogen-mixed simulation conveying equipment. The device includes interconnect's injection system and pipe network analog system, pipe network analog system includes the connecting pipe, the connecting pipe includes a main connecting pipe and an at least inferior connecting pipe, main connecting pipe with injection system connects, still is equipped with at least one test tube section simultaneously, the test tube section includes straight tube section, elbow and flange, the test tube section both ends can be dismantled with the connecting pipe of difference respectively and be connected. The device can test the influence of the hydrogen-doped natural gas on the pipe sections of different types by arranging the test pipe sections of different types.
Description
Technical Field
The utility model relates to the technical field of natural gas and hydrogen mixing simulation conveying equipment, in particular to a simulation device of a hydrogen-doped natural gas pipe network.
Background
Natural gas is a relatively clean energy source at present, but the dependence of the natural gas on the outside is relatively high at present in China, and meanwhile, technical experts in China look to comprehensive utilization of hydrogen under the environment of carbon peak reaching and carbon neutralization. The hydrogen has the advantages of high heat value and capability of reducing carbon dioxide emission, so that the hydrogen has a wide application prospect compared with the traditional fossil energy.
One important research direction at present is hydrogen-doped natural gas, i.e. a substitute gas fuel prepared by mixing hydrogen and natural gas in a certain proportion, which belongs to one of 'shallow hydrogen fuels'. Due to the characteristics of high combustion speed, wide combustion limit, small specific heat value and the like of the hydrogen, the natural gas combustion characteristic can be changed by doping the hydrogen into the natural gas, and the problem of large-scale hydrogen energy transportation is also solved. However, it has the following problems: since the physical properties of natural gas and hydrogen are greatly different, natural gas and hydrogen are likely to be layered in a pipeline, which is not favorable for subsequent utilization. Meanwhile, in the existing conveying pipe network, carbon steel is generally adopted as a conveying pipeline, and when the mixed hydrogen natural gas is conveyed, the problems of hydrogen embrittlement and the like can occur. Therefore, it is necessary to design a device for simulating a hydrogen-loaded natural gas pipe network, which is used for simulating the situation of hydrogen-loaded natural gas in different pipelines and under different material conditions, and provides data support for actual industrial transportation.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention is directed to a simulation apparatus for a pipeline network of natural gas, which is capable of simulating the influence of natural gas on different types of pipelines.
The technical scheme provided by the utility model is that the simulation device for the hydrogen-doped natural gas pipe network comprises an injection system and a pipe network simulation system which are connected with each other, wherein the pipe network simulation system comprises a connecting pipe, the connecting pipe comprises a main connecting pipe and at least one secondary connecting pipe, the main connecting pipe is connected with the injection system, at least one test pipe section is also arranged, the test pipe section comprises a straight pipe section, an elbow and a flange, and two ends of the test pipe section are respectively detachably connected with different connecting pipes.
One embodiment of the present invention is that the injection system includes a mixing container having one end communicating with the main connection pipe and the other end connecting the natural gas tank and the hydrogen tank in parallel.
Further, the natural gas tank with still be equipped with flowmeter, first booster pump in proper order between the mixing container, the hydrogen gas tank with still be equipped with flowmeter, second booster pump in proper order between the mixing container.
One embodiment of the present invention is that a connector is disposed at one end of the main connection pipe away from the injection system, connectors are disposed at two ends of the secondary connection pipe, and the test pipe segment is communicated with the main connection pipe and the secondary connection pipe via the connectors.
Further, the connecting pipe still includes the end connecting pipe, end connecting pipe one end is equipped with the connector, and the other end is connected with miniature torch.
One embodiment of the utility model is that at least two hydrogen sensors are arranged on any one of the test tube sections.
Furthermore, two ends of the straight pipe section are respectively provided with a hydrogen sensor, two ends of the elbow are respectively provided with a hydrogen sensor, and two ends of the flange are respectively provided with a hydrogen sensor.
The utility model has the technical effects that: by arranging different types of test pipe sections, the influence of the hydrogen-doped natural gas on the different types of pipe sections can be tested.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic view of the overall structure of the present invention.
In the figure, 1 is a natural gas tank, 2 is a hydrogen tank, 3 is a first booster pump, 4 is a second booster pump, 5 is a mixing container, 6 is a main connecting pipe, 7 is a secondary connecting pipe, 8 is a straight pipe section, 9 is an elbow, 10 is a flange, 11 is a micro torch, 12 is a hydrogen sensor, 13 is a connector, 14 is a flowmeter, and 15 is an end connecting pipe.
Detailed Description
The present invention will be described in further detail with reference to the following examples and the accompanying drawings.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, 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.
Example 1:
the utility model provides a simulator of loading natural gas pipe network, includes interconnect's injection system and pipe network analog system, pipe network analog system includes the connecting pipe, the connecting pipe includes a main connecting pipe 6 and an at least inferior connecting pipe 7, main connecting pipe 6 with injection system connects, still is equipped with at least one test tube section simultaneously, the test tube section includes straight tube section 8, elbow 9 and flange 10, test tube section both ends respectively detachable and different connecting pipe intercommunication.
Specifically, the injection system and the pipe network simulation system are two components of this embodiment, wherein, the main effect of the injection system is to inject the hydrogen-doped natural gas required by the experiment into the pipe network simulation system, and the pipe network simulation system is the main place for carrying out the simulation experiment.
The pipe network simulation system is a main improvement point of this embodiment, and mainly includes a connecting pipe and a test pipe section, wherein the connecting pipe is mainly divided into a main connecting pipe 6 and at least one secondary connecting pipe 7, and the test pipe section is mainly used for simulating various conveying pipeline structures in the prior art, and mainly includes a straight pipe section 8, an elbow 9 and a flange 10, and certainly, the test pipe section is not limited thereto, and other pipe sections with welded joints may also be set as the test pipe section. Meanwhile, the number of the test pipe sections can be generally 1, and a plurality of different test pipe sections can also be provided. Meanwhile, different specifications can be set for the same type of test pipe section, for example, different lengths or different diameters can be set for the straight pipe section 8 to be tested. In this embodiment, to save on process and cost, three different types and representatives of test tube sections are provided: a straight pipe section 8, an elbow 9 and a flange 10.
One end of the main connecting pipe 6 is connected with the injection system, and the other end is connected with the test pipe section; both ends of the secondary connecting pipe 7 are connected with different test pipe sections. Meanwhile, the connecting pipe and the test pipe section are detachably connected, when an experiment is carried out for a certain time, the test pipe section can be detached, and the tolerance of the pipe section to hydrogen can be obtained by testing the property of the test pipe section, so that the pipe section made of a better material can be selected preferably. In this embodiment, the detachable connection between the connection pipe and the test pipe section is realized by providing the connection head 13: a connector 13 is arranged at one end of the main connecting pipe 6 far away from the injection system, and a connector 13 is arranged at two ends of the secondary connecting pipe 7 respectively, so that the connection of the test pipe sections is facilitated.
In some embodiments, the connection tube further comprises a terminal connection tube 15, and the terminal connection tube 15 has a connection head 13 at one end and a micro torch 11 at the other end. In the test process, the hydrogen and the natural gas are contained in the hydrogen-doped natural gas, so that the hydrogen-doped natural gas is not convenient to recover for further utilization, and the safety is affected if the hydrogen-doped natural gas is directly discharged, so that the tested gas is combusted by arranging a micro torch 11.
In this implementation, any injection system capable of realizing injection of the hydrogen-loaded natural gas in the prior art can be adopted to inject the hydrogen-loaded natural gas into the pipe network simulation system, and in order to facilitate implementation, the injection system provided in this embodiment includes a mixing container 5, one end of the mixing container 5 is connected with a main connecting pipe 6, and the other end of the mixing container 5 is connected with a natural gas tank 1 and a hydrogen gas tank 2 in parallel. The experiment can be carried out after injecting natural gas and hydrogen gas in different proportions into the mixing container 5 and mixing.
Meanwhile, in order to facilitate the injection of the hydrogen-doped natural gas into the mixing container 5, a flow meter 14 and a first booster pump 3 are sequentially arranged between the natural gas tank 1 and the mixing container 5, and a flow meter 14 and a second booster pump 4 are sequentially arranged between the hydrogen tank 2 and the mixing container 5. The ratio of natural gas and hydrogen can be accurately controlled by the flow meter 14, and the gas can be appropriately pressurized by the first and second pressurizing pumps 3 and 4 for simulating the pressure of the pipeline during actual transportation.
Since natural gas and hydrogen have different physical properties, natural gas and hydrogen are easily layered in a pipe network in an actual transportation process, for this reason, some pipelines capable of further mixing natural gas and hydrogen in the transportation process are proposed in the prior art, but although natural gas and hydrogen can be mixed, the natural gas and hydrogen are still gradually separated after the pipeline length is extended to a certain extent. Meanwhile, in the practical application process, when the hydrogen-doped natural gas passes through parts such as an elbow, a valve and the like, the fluid form of the hydrogen-doped natural gas is changed to a certain degree, so that the natural gas and the hydrogen are easily separated. Thus, the change in the proportion of hydrogen on the test pipe section is tested by providing a hydrogen sensor 12 on the section. The hydrogen sensor 12 is specifically arranged as follows: for the elbow 9 and the flange 10, a hydrogen sensor 12 is arranged on each of two sides of the elbow and the flange; for the straight pipe section 8, firstly, two ends of the straight pipe section 8 are respectively provided with one hydrogen sensor 12, and meanwhile, according to the length of the straight pipe section 8, a plurality of hydrogen sensors 12 are properly arranged in the middle of the straight pipe section 8. And finally, the separation condition of the hydrogen and the natural gas after the hydrogen-doped natural gas flows through each pipe section is judged by monitoring the proportion change of the hydrogen sensors 12 at each part.
During the use, according to the concrete demand of experiment, adjust the aperture of valve on hydrogen tank 1 and the natural gas jar 2, open flowmeter 13, first booster pump 3 and second booster pump 4 simultaneously for hydrogen and natural gas mix in mixing vessel 5 according to certain proportion. According to the experiment demand, will test pipeline section and connecting pipe and connect, begin to test, in the experimentation, the gaseous 11 burning of miniature torch of passing through after will testing, the numerical value through monitoring the hydrogen sensor on the different positions simultaneously changes. After the end of the experiment, the reaction mixture was,
the above description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the embodiments of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. The utility model provides a simulator of loading natural gas pipe network, its characterized in that, injection system and pipe network analog system including interconnect, pipe network analog system includes the connecting pipe, the connecting pipe includes a main connecting pipe and an at least time connecting pipe, main connecting pipe with injection system connects, still is equipped with at least one test tube section simultaneously, the test tube section includes straight tube section, elbow and flange, the test tube section both ends can be dismantled with different connecting pipes respectively and be connected.
2. The simulation apparatus of claim 1, wherein the injection system comprises a mixing vessel having one end in communication with the main connection pipe and the other end connecting the natural gas tank and the hydrogen tank in parallel.
3. The simulation apparatus as claimed in claim 2, wherein a flow meter and a first booster pump are sequentially arranged between the natural gas tank and the mixing container, and a flow meter and a second booster pump are sequentially arranged between the hydrogen gas tank and the mixing container.
4. The simulation apparatus of claim 1, wherein a connector is disposed at an end of the primary connection pipe away from the injection system, connectors are disposed at two ends of the secondary connection pipe, and the test pipe segment is communicated with the primary connection pipe and the secondary connection pipe via the connectors.
5. The simulation apparatus of claim 4, wherein the connecting tube further comprises a terminal connecting tube, one end of the terminal connecting tube is provided with a connector, and the other end of the terminal connecting tube is connected with a micro torch.
6. The simulator of claim 1, wherein at least two hydrogen sensors are provided on any one of the test tube sections.
7. The simulator of claim 6, wherein the straight pipe section is provided at each of both ends thereof with a hydrogen sensor, the elbow is provided at each of both ends thereof with a hydrogen sensor, and the flange is provided at each of both ends thereof with a hydrogen sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220179195.0U CN216715867U (en) | 2022-01-24 | 2022-01-24 | Simulation device for hydrogen-doped natural gas pipe network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220179195.0U CN216715867U (en) | 2022-01-24 | 2022-01-24 | Simulation device for hydrogen-doped natural gas pipe network |
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| Publication Number | Publication Date |
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| CN216715867U true CN216715867U (en) | 2022-06-10 |
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| CN202220179195.0U Active CN216715867U (en) | 2022-01-24 | 2022-01-24 | Simulation device for hydrogen-doped natural gas pipe network |
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| CN (1) | CN216715867U (en) |
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