CN215372034U - Box type single-pump LNG (liquefied Natural gas) station process system - Google Patents
Box type single-pump LNG (liquefied Natural gas) station process system Download PDFInfo
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- CN215372034U CN215372034U CN202121373854.6U CN202121373854U CN215372034U CN 215372034 U CN215372034 U CN 215372034U CN 202121373854 U CN202121373854 U CN 202121373854U CN 215372034 U CN215372034 U CN 215372034U
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Abstract
The utility model provides a box-type single-pump LNG filling station process system which comprises a storage tank and a supercharger, wherein the filling station process system comprises an immersed pump, the storage tank, the immersed pump and the supercharger are communicated through a plurality of pipelines, a liquid phase port, a gas phase port and a supercharging port which are communicated with a tank car are arranged at the input end of the filling station process system, safety valves are arranged at the liquid phase port, the gas phase port and the supercharging port, and a filling machine interface communicated with a filling machine is arranged at the output end of the filling station process system. The utility model has the following beneficial effects: the storage tank, the immersed pump and the supercharger are integrally arranged on the pry, and only one immersed pump is arranged on the pry, so that the occupied area is small, the construction period is short, and the field installation is convenient and rapid; the safety valve provides a diffusing function for the unloading interface, and the safety of the process system of the gas station is improved; the electromagnetic valve is arranged on the immersed pump to adjust the working pressure of the immersed pump, so that the liquid inlet of the immersed pump is prevented from being influenced by overhigh pressure of the immersed pump.
Description
Technical Field
The utility model relates to the technical field of LNG gas stations, in particular to a box-type single-pump LNG gas station process system.
Background
In a conventional LNG filling station, LNG in the storage tank is pumped out by an LNG low-temperature pump for pressurization, the LNG is filled by a liquid filling machine, and the LNG in the tank car is pumped to the LNG storage tank by the low-temperature pump when the LNG filling station unloads the vehicle.
At the present stage, the LNG automobile gas station is mainly used for popularizing an LNG automobile gas filling project, the LNG skid-mounted gas station project is in a development stage in China, LNG automobiles are developed, and the LNG automobile gas station is an effective measure for treating the emission pollution of motor vehicles and improving the atmospheric environment. The conventional LNG skid-mounted gas station and the fixed station are low in integration level and large in occupied area, so that the station building cost is high.
SUMMERY OF THE UTILITY MODEL
The utility model provides a box-type single-pump LNG filling station process system, which solves the problems that the conventional LNG skid-mounted filling station and a fixed station in the prior art are low in integration level, large in occupied area and high in station building cost.
The technical scheme of the utility model is realized as follows:
box single pump LNG gas station process system, including storage tank and booster, the gas station process system includes an immersed pump, is linked together through a plurality of pipeline between storage tank, immersed pump and the booster, and the input of gas station process system is equipped with liquid phase mouth, gaseous phase mouth and the pressure boost mouth with the tank wagon intercommunication, and liquid phase mouth, gaseous phase mouth and pressure boost mouth department all are equipped with the relief valve, and the output of gas station process system is equipped with the gas machine interface with the gas machine intercommunication. Storage tank, immersed pump and booster integration are installed on the sled to only be equipped with an immersed pump on the sled, make gas station area little, site operation convenient and fast, the relief valve improves gas station process systems's security for unloading the interface provides the function of diffusing.
And the immersed pump is provided with a safety valve and an electromagnetic valve, the safety valve ensures the use safety of the immersed pump, and the electromagnetic valve controls and adjusts the working pressure of the immersed pump.
Be equipped with inlet and liquid outlet on the storage tank, inlet and liquid phase mouth intercommunication, LNG passes through liquid phase mouth and inlet entering storage tank in the tank wagon, and the liquid outlet forms the gassing return circuit through immersed pump and gas dispenser interface intercommunication, and LNG gets into and adds the mechanism of qi and carries out the gassing to the LNG vehicle through liquid outlet, immersed pump and gas dispenser interface in proper order in the storage tank. The liquid inlet comprises a lower liquid inlet and an upper liquid inlet, the lower liquid inlet is communicated with the lower portion of the storage tank, and the upper liquid inlet is communicated with the upper portion of the storage tank.
The gas phase mouth and pressure boost mouth form from the pressure boost return circuit with the booster intercommunication respectively, and LNG passes through the pressure boost mouth and gets into the booster in the tank wagon, and LNG after the pressure boost passes through the gas phase mouth and gets into the tank wagon, makes tank wagon internal pressure increase, is convenient for carry out the self-pressurization unloading flow of tank wagon.
The liquid phase port is communicated with the liquid inlet on the storage tank through the immersed pump to form a pump unloading loop, and LNG in the tank car enters the immersed pump through the liquid phase port and is conveyed to the liquid inlet from the immersed pump and enters the storage tank.
The liquid inlet on liquid outlet, immersed pump, booster and the storage tank communicates in proper order and forms the pressure regulating return circuit, and LNG passes through the liquid outlet and gets into the immersed pump in the storage tank, then gets into the booster, and the LNG after the booster pressure boost lets in the storage tank from the inlet, realizes the adjustment of storage tank internal pressure.
The utility model has the following beneficial effects: the storage tank, the immersed pump and the supercharger are integrally arranged on the pry, and only one immersed pump is arranged on the pry, so that the occupied area is small, the construction period is short, and the field installation is convenient and rapid; the safety valve provides a diffusing function for the unloading interface, and the safety of the process system of the gas station is improved; the immersed pump is provided with the electromagnetic valve, the working pressure of the immersed pump is adjusted, the phenomenon that the liquid inlet of the immersed pump is influenced by overhigh pressure of the immersed pump is avoided, and the gas filling machine is not integrated on a pry and is suitable for natural gas filling stations which are large in site, have awning and are newly built.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic diagram of a box-type single-pump LNG gas station process system of the present invention.
In the figure: 1-storage tank, 11-lower liquid inlet, 12-upper liquid inlet, 13-liquid outlet, 2-immersed pump, 21-electromagnetic valve, 3-supercharger, 4-tank wagon, 41-liquid inlet, 42-gas inlet, 43-supercharging inlet, 5-gas filling machine interface and 6-safety valve.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
Embodiment 1, as shown in fig. 1, a box-type single-pump LNG refueling station process system includes a storage tank 1 and a supercharger 3, the refueling station process system includes an immersed pump 2, the storage tank 1, the immersed pump 2 and the supercharger 3 are communicated with each other through a plurality of pipelines, the storage tank 1, the immersed pump 2 and the supercharger 3 are all integrally installed on a skid, and only one immersed pump 2 is installed on the skid, so as to effectively reduce the floor area of a refueling station, shorten the construction period of the refueling station, and be convenient and fast to install, the input end of the refueling station process system is provided with a liquid port 41, a gas port 42 and a supercharging port 43 which are communicated with a tank car 4, and the liquid port 41, the gas port 42 and the supercharging port 43 are respectively provided with a safety valve 6, the safety valve 6 provides a safety relief function for the liquid port 41, the gas port 42 and the supercharging port 43, so as to improve the safety of the refueling station process system, the output end of the refueling station process system is provided with a refueling machine interface 5 communicated with a refueling machine, LNG in the storage tank 1 is introduced into the gas dispenser through the gas dispenser interface 5 and is used for filling gas into the LNG vehicle.
Further, be equipped with relief valve and solenoid valve 21 on the immersed pump 2, when the immersed pump 2 broke down, the relief valve started, and the security that the immersed pump 2 used is guaranteed to the relief valve, and solenoid valve 21 can adjust the pressure in the immersed pump 2, guarantees that operating pressure is stable. In the course of the work, LNG can produce the gasification of certain degree in the immersed pump 2, makes 2 internal pressure of immersed pump risees, influences 2 feed liquors of immersed pump, and when 2 internal pressure of immersed pump reached the great value, solenoid valve 21 was opened automatically and is carried out the pressure release to 2 feed liquors of immersed pump, the 2 feed liquors of the immersed pump of being convenient for.
Further, the gas phase port 42 and the pressurization port 43 are respectively communicated with the supercharger 3 to form a self-pressurization loop, LNG in the tank car 4 enters the supercharger 3 through the pressurization port 43, the LNG is pressurized in the supercharger 3 and then enters the tank car 4 from the gas phase port 42 to pressurize the interior of the tank car 4, and when the pressure in the tank car 4 is higher than the pressure in the storage tank 1 by 0.2MPa, the LNG in the tank car 4 enters the storage tank 1 through the liquid phase port 41 and a liquid inlet in the storage tank 1, so that the self-pressurization unloading function of the gas station process system is realized.
Further, the liquid phase port 41 is communicated with a liquid inlet on the storage tank 1 through the immersed pump 2 to form a pump unloading loop, LNG in the tank car 4 is output from the liquid phase port 41 and enters the immersed pump 2 from an input port A of the immersed pump 2, the immersed pump 2 outputs the LNG from an output port C and enters the storage tank 1 through the liquid inlet, and the pump unloading function of the gas station process system is achieved.
Further, liquid outlet 13, immersed pump 2, the inlet on booster 3 and the storage tank 1 communicates in proper order and forms the pressure regulating return circuit, LNG passes through liquid outlet 13 output in the storage tank 1 and gets into immersed pump 2 through the input port B of immersed pump 2, and immersed pump 2 exports LNG from delivery outlet C and lets in booster 3, and booster 3 lets in storage tank 1 from the inlet on storage tank 1 after to the LNG pressure boost, for the inside pressure boost that carries out of storage tank 1, realizes the adjustment of 1 internal pressure in storage tank. The other structure is the same as embodiment 1.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (7)
1. Box single pump LNG gas station process system, including storage tank (1) and booster (3), a serial communication port, gas station process system includes an immersed pump (2), storage tank (1), be linked together through a plurality of pipeline between immersed pump (2) and booster (3), gas station process system's input is equipped with liquid phase mouth (41) with tank wagon (4) intercommunication, gaseous phase mouth (42) and pressure boost mouth (43), and liquid phase mouth (41), gaseous phase mouth (42) and pressure boost mouth (43) department all are equipped with relief valve (6), gas station process system's output is equipped with gas machine interface (5) with the gas machine intercommunication.
2. The tank type single-pump LNG station process system of claim 1, wherein the immersed pump (2) is provided with a safety valve and an electromagnetic valve (21).
3. The box-type single-pump LNG station process system of claim 1 or 2, wherein the storage tank (1) is provided with a liquid inlet and a liquid outlet (13), the liquid inlet is communicated with the liquid port (41), and the liquid outlet (13) is communicated with the gas dispenser interface (5) through the immersed pump (2) to form a gas filling loop.
4. A tank single pump LNG station process system according to claim 3, characterized in that the loading ports comprise a lower loading port (11) and an upper loading port (12).
5. The tank type single-pump LNG station process system according to claim 1 or 4, characterized in that the gas phase port (42) and the pressurization port (43) are respectively communicated with the pressurizer (3) to form a self-pressurization loop.
6. The tank type single-pump LNG station process system of claim 5, wherein the liquid phase port (41) is communicated with a liquid inlet on the storage tank (1) through the immersed pump (2) to form a pump unloading loop.
7. The box-type single-pump LNG station process system of claim 1, 4 or 6, wherein the liquid outlet (13), the immersed pump (2), the booster (3) and the liquid inlet on the storage tank (1) are communicated in sequence to form a pressure regulating loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121373854.6U CN215372034U (en) | 2021-06-21 | 2021-06-21 | Box type single-pump LNG (liquefied Natural gas) station process system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121373854.6U CN215372034U (en) | 2021-06-21 | 2021-06-21 | Box type single-pump LNG (liquefied Natural gas) station process system |
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| CN215372034U true CN215372034U (en) | 2021-12-31 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115585390A (en) * | 2022-09-29 | 2023-01-10 | 醴陵中油燃气有限责任公司 | LNG emergency peak regulation storage and distribution system |
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2021
- 2021-06-21 CN CN202121373854.6U patent/CN215372034U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115585390A (en) * | 2022-09-29 | 2023-01-10 | 醴陵中油燃气有限责任公司 | LNG emergency peak regulation storage and distribution system |
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