CN211780218U - Energy-saving gas supply system and LNG skid-mounted gas supply station - Google Patents
Energy-saving gas supply system and LNG skid-mounted gas supply station Download PDFInfo
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- CN211780218U CN211780218U CN202020240676.9U CN202020240676U CN211780218U CN 211780218 U CN211780218 U CN 211780218U CN 202020240676 U CN202020240676 U CN 202020240676U CN 211780218 U CN211780218 U CN 211780218U
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Abstract
The application relates to an energy-saving gas supply system and LNG sled dress formula gas supply station, include: the gas cylinder, gas recovery unit, first check valve, first relief valve, vaporizer. The gas cylinder passes through first pipe connection vaporizer, and the vaporizer passes through the second pipe connection and adds the mechanism of qi, and liquefied natural gas exports the vaporizer from the gas cylinder, gasifies through the vaporizer, carries again and adds the mechanism of qi. The second pipeline is provided with a first safety valve, the first safety valve is connected with the gas recovery device through a third pipeline, the valve direction faces the third pipeline, and when the gas pressure in the second pipeline rises to exceed a specified value, natural gas escapes to the third pipeline through the first safety valve. And, gas recovery unit passes through the fourth pipeline and connects the gas cylinder, is provided with first check valve on the fourth pipeline, and the valve direction is towards the gas cylinder, and when the natural gas of retrieving in gas recovery unit was too much, gas recovery unit transported back the gas cylinder with the natural gas through first check valve, and first check valve is used for stopping the natural gas backward flow.
Description
Technical Field
The application relates to petrochemical industry energy equipment technical field especially relates to an energy-saving gas supply system and LNG sled dress formula gas supply station.
Background
Liquefied Natural Gas (LNG) is a liquid obtained by compressing Natural Gas and cooling the compressed Natural Gas to its boiling point, and is usually stored in a low-temperature storage tank at about-161.5 ° and 0.1MPa, and is gasified again when used, and a vehicle is aerated by an aerator. In the prior art, an LNG gas supply station is usually set up to fill gas into vehicles, a storage tank or a gas cylinder and the like are arranged in the LNG gas supply station to store liquefied natural gas, the liquefied natural gas is gasified through a gasifier when gas is required to be filled, and then the gas is filled into the vehicles through a gas filler. However, in the prior art, the pipeline connected between the gas cylinder and the gasifier and between the gas dispenser often causes gas leakage and volatilization due to overlarge pressure, which not only wastes energy, but also pollutes the atmospheric environment.
SUMMERY OF THE UTILITY MODEL
To overcome, at least to some extent, the problems in the related art, the present application provides an energy-saving gas supply system and an LNG skid-mounted gas supply station.
The scheme of the application is as follows:
according to a first aspect of embodiments of the present application, there is provided an energy-saving air supply system, including:
the gas cylinder, the gas recovery device, the first check valve, the first safety valve and the gasifier;
the gas cylinder is connected with the gasifier through a first pipeline;
the gasifier is connected with a gas dispenser through a second pipeline, wherein the second pipeline is provided with the first safety valve;
the first safety valve is connected with the gas recovery device through a third pipeline, and the valve direction of the first safety valve faces to the third pipeline;
the gas recovery device is connected with the gas cylinder through a fourth pipeline, wherein the fourth pipeline is provided with the first check valve;
the first check valve is oriented toward the gas cylinder.
Preferably, in an implementable manner herein,
the gas recovery device includes: a natural gas liquefier and a surge tank;
the natural gas liquefier is connected with the buffer tank;
the buffer tank is connected with the first safety valve through the third pipeline, is also connected with the gas cylinder through a fifth pipeline, and is also connected with the gas dispenser through a sixth pipeline.
Preferably, in an implementable manner of the present application, a second check valve is provided on the sixth line, the second check valve being directed towards the buffer tank.
Preferably, in an implementable manner of the present application, a second safety valve is further provided on the fifth pipeline, the second safety valve being directed towards the buffer tank.
Preferably, in an implementation manner of the present application, the method further includes:
a central controller, a gasifier temperature sensor;
the central controller is connected with the gasifier temperature sensor;
the gasifier temperature sensor is arranged in the gasifier and used for collecting temperature data in the gasifier and sending the temperature data in the gasifier to the central controller.
Preferably, in an implementation manner of the present application, the method further includes:
a buffer tank pressure sensor;
the central controller is also connected with the buffer tank pressure sensor;
the buffer tank pressure sensor is arranged in the buffer tank and used for collecting pressure data in the buffer tank and sending the pressure data in the buffer tank to the central controller.
Preferably, in an implementation manner of the present application, the method further includes:
a buffer tank temperature sensor;
the central controller is also connected with the buffer tank temperature sensor;
the buffer tank temperature sensor is arranged in the buffer tank and used for collecting temperature data in the buffer tank and sending the temperature data in the buffer tank to the central controller.
Preferably, in an implementation manner of the present application, the method further includes:
a gas cylinder pressure sensor;
the central controller is also connected with the gas cylinder pressure sensor;
the gas cylinder pressure sensor is arranged in the gas cylinder and used for collecting pressure data in the gas cylinder and sending the pressure data in the gas cylinder to the central controller.
Preferably, in an implementation manner of the present application, the method further includes:
a liquid level meter;
the central controller is also connected with the liquid level meter;
the liquid level meter is arranged in the gas cylinder and used for collecting liquid level data in the gas cylinder and sending the liquid level data in the gas cylinder to the central controller.
According to a second aspect of embodiments of the present application, there is provided an LNG skid-mounted gas supply station comprising: the container, the instrument system, combustible gas detects alarm system, adds mechanism of qi, refrigerating system and as above any one energy-saving gas supply system.
The technical scheme provided by the application can comprise the following beneficial effects: the energy-saving gas supply system includes: the gas cylinder, gas recovery unit, first check valve, first relief valve, vaporizer. The gas cylinder passes through first pipe connection vaporizer, and the vaporizer passes through the second pipe connection and adds the mechanism of qi, and liquefied natural gas exports the vaporizer from the gas cylinder, gasifies through the vaporizer, carries again and adds the mechanism of qi. Because the first safety valve is arranged on the second pipeline, the first safety valve is connected with the gas recovery device through the third pipeline, the valve direction faces the third pipeline, and when the gas pressure in the second pipeline rises to exceed a specified value, the natural gas escapes to the third pipeline through the first safety valve. And, gas recovery unit passes through the fourth pipeline and connects the gas cylinder, is provided with first check valve on the fourth pipeline, and the valve direction is towards the gas cylinder, and when the natural gas of retrieving in gas recovery unit was too much, gas recovery unit transported back the gas cylinder with the natural gas through first check valve, and first check valve is used for stopping the natural gas backward flow. In this application, can prevent to carry during the pipeline gas pressure of natural gas is too high leads to natural gas to leak to the atmosphere to can retrieve the natural gas of leaking from the pipeline, still save the energy when the non-staining atmospheric environment.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.
FIG. 1 is a schematic structural diagram of an energy-saving air supply system according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of an energy-saving air supply system according to another embodiment of the present application.
Reference numerals: a gas cylinder-1; a first conduit-11; a second conduit-12; a third conduit-13; a fourth conduit-14; a fifth conduit-15; a sixth conduit-16; a gas recovery unit-2; a buffer tank-21; a natural gas liquefier-22; a first check valve-3; a first safety valve-4; a gasifier-5; a second check valve-6; a second safety valve-7.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.
Fig. 1 is a schematic structural diagram of an energy-saving air supply system according to an embodiment of the present application, and referring to fig. 1, the energy-saving air supply system includes:
a gas cylinder 1, a gas recovery device 2, a first check valve 3, a first safety valve 4 and a gasifier 5;
the gas cylinder 1 is connected with the gasifier 5 through a first pipeline 11;
the gasifier 5 is connected with a gas dispenser through a second pipeline 12, wherein a first safety valve 4 is arranged on the second pipeline 12;
the first safety valve 4 is connected with the gas recovery device 2 through a third pipeline 13, and the valve direction of the first safety valve 4 faces to the third pipeline 13;
the gas recovery device 2 is connected with the gas bottle 1 through a fourth pipeline 14, wherein the fourth pipeline 14 is provided with a first check valve 3;
the first check valve 3 is valve-oriented towards the gas cylinder 1.
The gas cylinder 1 is a cryogenic gas cylinder 1 for storing liquefied natural gas, which is commonly used in the art.
The gas recovery device 2 is used for recovering natural gas leaking from the second pipeline 12 due to the over-high gas pressure.
The safety valve is a special valve which is in a normally closed state under the action of external force, and when the pressure of a medium in equipment or a pipeline rises to exceed a specified value, the medium is discharged to the outside of a system to prevent the pressure of the medium in the pipeline or the equipment from exceeding the specified value.
The check valve is a valve with a circular valve clack and acts by self weight and medium pressure to block the medium from flowing backwards. The valve is opened when the inlet pressure is greater than the sum of the weight of the flap and its flow resistance. Otherwise, the valve is closed when the medium flows backwards.
The gasifier 5 is a device commonly used in the art for gasifying liquefied natural gas.
The energy-saving air supply system in this embodiment includes: the gas cylinder 1, the gas recovery device 2, the first check valve 3, the first safety valve 4 and the gasifier 5. Gas cylinder 1 is connected vaporizer 5 through first pipeline 11, and vaporizer 5 is connected with the mechanism of qi that adds through second pipeline 12, and liquefied natural gas exports vaporizer 5 from gas cylinder 1, gasifies through vaporizer 5, carries again and adds the mechanism of qi. Because be provided with first relief valve 4 on second pipeline 12, first relief valve 4 passes through third pipeline 13 and connects gas recovery unit 2, and first relief valve 4 valve direction is towards third pipeline 13, and first relief valve 4 receives external force effect down and is in normally closed state, and when the gas pressure rise in second pipeline 12 exceeded the specified value, the natural gas escaped to third pipeline 13 through first relief valve 4. Furthermore, the gas recovery device 2 is connected with the gas cylinder 1 through a fourth pipeline 14, the fourth pipeline 14 is provided with a first check valve 3, the valve direction of the first check valve 3 faces the gas cylinder 1, when the natural gas recovered in the gas recovery device 2 is excessive, the gas recovery device 2 conveys the natural gas back to the gas cylinder 1 through the first check valve 3, and the first check valve 3 is used for preventing the natural gas from flowing back. In this application, can prevent to carry during the pipeline gas pressure of natural gas is too high leads to natural gas to leak to the atmosphere to can retrieve the natural gas of leaking from the pipeline, still save the energy when the non-staining atmospheric environment.
Energy-saving gas supply system in some embodiments, referring to fig. 2, the gas recovery device 2 includes: a natural gas liquefier 22 and a surge tank 21;
the natural gas liquefier 22 is connected with the buffer tank 21;
the buffer tank 21 is connected with the first safety valve 4 through a third pipeline 13, is also connected with the gas cylinder 1 through a fifth pipeline 15, and is also connected with the gas dispenser through a sixth pipeline 16.
Further, referring to fig. 2, the sixth pipe 16 is provided with a second check valve 6, and the second check valve 6 faces the surge tank 21 in the valve direction.
The fifth pipeline 15 is also provided with a second safety valve 7, and the valve direction of the second safety valve 7 faces the buffer tank 21.
The buffer tank 21 is mainly used for buffering pressure fluctuation of a system in various systems, so that the system works more stably, and the buffering performance of the buffer tank 21 is mainly realized by compressing compressed air in the tank.
The buffer tank 21 is connected to the first safety valve 4 through the third pipe 13, and recovers natural gas leaked through the first safety valve 4 due to the pressure increase in the third pipe 13.
The buffer tank 21 is also connected with a gas dispenser through a sixth pipeline 16, and the valve direction of the second check valve 6 faces to the buffer tank 21. When the gas dispenser is dispensing gas, the natural gas leaked from the gas dispenser can be recovered through the sixth pipeline 16, and the natural gas leaked from the gas dispenser is conveyed to the buffer tank 21 through the second check valve 6, so that the natural gas can be prevented from flowing backwards due to the check valve arranged on the sixth pipeline 16.
Natural gas is compressed and cooled to its boiling temperature and becomes liquid. When the natural gas in the buffer tank 21 is recovered to a certain amount, the gas pressure in the buffer tank 21 is higher than a certain threshold value, the natural gas liquefier 22 is used for liquefying the natural gas in the buffer tank 21, and then the liquefied natural gas is conveyed back to the gas bottle 1 through the first check valve 3, so that the natural gas recovery process is completed.
The energy efficient air supply system in some embodiments, further comprising:
the system comprises a central controller, a gasifier temperature sensor, a buffer tank pressure sensor, a buffer tank temperature sensor, a gas cylinder pressure sensor and a liquid level meter;
the central controller is respectively connected with a gasifier temperature sensor, a buffer tank pressure sensor, a buffer tank temperature sensor, a gas cylinder pressure sensor and a liquid level meter;
the gasifier temperature sensor is arranged in the gasifier 5 and used for acquiring temperature data in the gasifier 5 and sending the temperature data in the gasifier to the central controller;
the buffer tank pressure sensor is arranged in the buffer tank 21 and used for acquiring pressure data in the buffer tank 21 and sending the pressure data in the buffer tank to the central controller;
the buffer tank temperature sensor is arranged in the buffer tank 21 and used for collecting temperature data in the buffer tank 21 and sending the temperature data in the buffer tank to the central controller;
the gas cylinder pressure sensor is arranged in the gas cylinder 1 and used for collecting pressure data in the gas cylinder 1 and sending the pressure data in the gas cylinder to the central controller;
the liquid level meter is arranged in the gas cylinder 1 and used for collecting liquid level data in the gas cylinder 1 and sending the liquid level data in the gas cylinder to the central controller.
The central controller may be equipped with a display to display temperature data in the vaporizer 5, pressure and temperature data in the buffer tank 21, pressure and liquid level data in the gas cylinder 1.
An LNG skid-mounted gas supply station, comprising: the container, the instrument system, combustible gas detection alarm system, add mechanism of qi, refrigerating system to and as the energy-saving gas supply system in any one above embodiment.
LNG sled dress formula gas supply station uses LNG to add the mechanism of qi, fills automobile-used LNG for LNG car gas bomb to can provide the facility of other convenience services.
The LNG skid-mounted gas supply station in this embodiment is provided with a container as a facility housing to protect the internal systems.
The instrument system, the combustible gas detection and alarm system, the gas dispenser, the refrigeration system and the energy-saving gas supply system are all arranged in the container.
It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments.
It should be noted that, in the description of the present application, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Further, in the description of the present application, the meaning of "a plurality" means at least two unless otherwise specified.
In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.
Claims (10)
1. An energy-efficient gas supply system, comprising:
the gas cylinder, the gas recovery device, the first check valve, the first safety valve and the gasifier;
the gas cylinder is connected with the gasifier through a first pipeline;
the gasifier is connected with a gas dispenser through a second pipeline, wherein the second pipeline is provided with the first safety valve;
the first safety valve is connected with the gas recovery device through a third pipeline, and the valve direction of the first safety valve faces to the third pipeline;
the gas recovery device is connected with the gas cylinder through a fourth pipeline, wherein the fourth pipeline is provided with the first check valve;
the first check valve is oriented toward the gas cylinder.
2. The energy efficient air supply system according to claim 1,
the gas recovery device includes: a natural gas liquefier and a surge tank;
the natural gas liquefier is connected with the buffer tank;
the buffer tank is connected with the first safety valve through the third pipeline, is also connected with the gas cylinder through a fifth pipeline, and is also connected with the gas dispenser through a sixth pipeline.
3. The energy efficient gas supply system of claim 2, wherein a second check valve is disposed on the sixth conduit, the second check valve being oriented toward the surge tank.
4. The energy efficient gas supply system according to claim 2, wherein a second relief valve is further provided on the fifth conduit, the second relief valve being directed toward the surge tank.
5. The energy efficient air supply system according to claim 2, further comprising:
a central controller, a gasifier temperature sensor;
the central controller is connected with the gasifier temperature sensor;
the gasifier temperature sensor is arranged in the gasifier and used for collecting temperature data in the gasifier and sending the temperature data in the gasifier to the central controller.
6. The energy efficient air supply system according to claim 5, further comprising:
a buffer tank pressure sensor;
the central controller is also connected with the buffer tank pressure sensor;
the buffer tank pressure sensor is arranged in the buffer tank and used for collecting pressure data in the buffer tank and sending the pressure data in the buffer tank to the central controller.
7. The energy efficient air supply system according to claim 5, further comprising:
a buffer tank temperature sensor;
the central controller is also connected with the buffer tank temperature sensor;
the buffer tank temperature sensor is arranged in the buffer tank and used for collecting temperature data in the buffer tank and sending the temperature data in the buffer tank to the central controller.
8. The energy efficient air supply system according to claim 5, further comprising:
a gas cylinder pressure sensor;
the central controller is also connected with the gas cylinder pressure sensor;
the gas cylinder pressure sensor is arranged in the gas cylinder and used for collecting pressure data in the gas cylinder and sending the pressure data in the gas cylinder to the central controller.
9. The energy efficient air supply system according to claim 5, further comprising:
a liquid level meter;
the central controller is also connected with the liquid level meter;
the liquid level meter is arranged in the gas cylinder and used for collecting liquid level data in the gas cylinder and sending the liquid level data in the gas cylinder to the central controller.
10. The utility model provides a LNG sled dress formula gas supply station which characterized in that includes: a container, an instrumentation system, a combustible gas detection alarm system, a gas dispenser, a refrigeration system, and an energy efficient gas supply system according to any of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020240676.9U CN211780218U (en) | 2020-03-02 | 2020-03-02 | Energy-saving gas supply system and LNG skid-mounted gas supply station |
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| CN202020240676.9U CN211780218U (en) | 2020-03-02 | 2020-03-02 | Energy-saving gas supply system and LNG skid-mounted gas supply station |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112283578A (en) * | 2020-11-13 | 2021-01-29 | 广西电网有限责任公司贺州供电局 | Recovery method and system based on sulfur hexafluoride gas recovery device |
| CN113464843A (en) * | 2021-06-18 | 2021-10-01 | 安庆船用电器有限责任公司 | Ship low-speed diesel engine fuel gas supply system |
-
2020
- 2020-03-02 CN CN202020240676.9U patent/CN211780218U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112283578A (en) * | 2020-11-13 | 2021-01-29 | 广西电网有限责任公司贺州供电局 | Recovery method and system based on sulfur hexafluoride gas recovery device |
| CN113464843A (en) * | 2021-06-18 | 2021-10-01 | 安庆船用电器有限责任公司 | Ship low-speed diesel engine fuel gas supply system |
| CN113464843B (en) * | 2021-06-18 | 2023-03-07 | 安庆船用电器有限责任公司 | Ship low-speed diesel engine fuel gas supply system |
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Effective date of registration: 20210716 Address after: 212000 No. 200, Dingdian, South Village, Xincheng Town, Dantu District, Zhenjiang City, Jiangsu Province Patentee after: Guangtai Zhizao Technology (Jiangsu) Co.,Ltd. Address before: 215600 Fengzhuang village, Houcheng, Jingang town, Zhangjiagang City, Suzhou City, Jiangsu Province Patentee before: Jiangsu Guangtai Petrochemical Energy Equipment Technology Co.,Ltd. |