CN210035065U - Supercharging device of vehicle-mounted LNG storage tank - Google Patents
Supercharging device of vehicle-mounted LNG storage tank Download PDFInfo
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- CN210035065U CN210035065U CN201920288835.XU CN201920288835U CN210035065U CN 210035065 U CN210035065 U CN 210035065U CN 201920288835 U CN201920288835 U CN 201920288835U CN 210035065 U CN210035065 U CN 210035065U
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- heat exchanger
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- storage tank
- pipeline
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Abstract
The utility model discloses a supercharging device of a vehicle-mounted LNG storage tank, which comprises an air pump, a gas transmission pipeline and a heat exchanger; the heat exchanger is arranged in the inner cavity of the inner tank body; the heat exchanger is fixed at the bottom of the inner tank body of the vehicle-mounted LNG storage tank through welding; the heat exchanger is any one of a snake-shaped heat exchanger, a cylindrical heat exchanger, a cuboid heat exchanger and a special-shaped heat exchanger; a cavity is formed between the special-shaped plate of the special-shaped heat exchanger and the bottom of the inner tank body; the gas transmission pipeline comprises a gas inlet pipeline and a gas outlet pipeline. The utility model discloses supercharging device occupation space of on-vehicle LNG storage tank is little, the security is high, simple structure, reasonable in design, has fine market perspective.
Description
Technical Field
The utility model relates to a supercharging device of on-vehicle LNG storage tank belongs to on-vehicle LNG storage tank technical field.
Background
Liquefied natural gas (LNG for short) belongs to high-efficiency clean energy and is one of the most ideal fuels at present. For the purpose of environmental protection, the application of LNG in various fields, particularly in the field of automotive fuels, has recently been supported and promoted by national policy.
For ease of use, LNG is often stored in storage tanks at pressures of 0.1-0.2MPa and temperatures around-160 ℃. When the on-vehicle LNG storage tank just was full of LNG, pressure is great, and along with using, storage tank pressure reduces, influences the efficiency of giving vent to anger. In order to improve the gas output and the gas output speed of the vehicle-mounted LNG storage tank, an increasing device is often required to be arranged.
Patent application number CN201720938193.4 discloses a quick supercharging device of low temperature storage tank, including liquid phase stop valve, gasification booster and gaseous phase stop valve, removed the blow-off valve, between gasification booster and gaseous phase stop valve, increased and used compressed air as the booster pump of power, can increase LNG liquid output, improve the utilization efficiency of LNG storage tank, nevertheless this booster line is external outside the storage tank, and occupation space is big.
Patent application number CN201510306337.X discloses an integrative device of integrated form vaporization pressure boost for on-vehicle air supply system of LNG, be equipped with the vaporization pipeline of snakelike crooked coil pipe formula and the pressure boost pipeline of heat pipe is traded around the piece in the box, the box top is equipped with inlet tube and the outlet pipe that is connected with the engine water pipe, the cooling water that utilizes the engine carries out the heat exchange, can reach the dual efficiency of vaporization and pressure boost simultaneously, the crisscross complicated problem that nevertheless trades the heat poor of pipeline of having solved vaporization pressure boost components of a whole that can function independently design, but this integrative device of booster and vaporizer still occupies great space, and the cooling water that uses automobile engine carries out the heat exchange, automobile safety risk has been increased.
In view of the above, the prior art is obviously inconvenient and disadvantageous in practical use, and needs to be improved.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is to provide a supercharging device of a vehicle-mounted LNG storage tank, which can improve the heat exchange efficiency by arranging the supercharging device in the vehicle-mounted LNG storage tank and exchanging heat with LNG through air, thereby improving the supercharging effect in the LNG storage tank and the utilization rate of LNG; the pressurizing pipeline is simplified, so that the pressurizing device occupies small space; meanwhile, the leakage risk is reduced, and the safety is improved; the utility model discloses simple structure, reasonable in design.
For solving the technical problem, the utility model discloses a following technical scheme: a supercharging device of a vehicle-mounted LNG storage tank comprises an air pump, a gas transmission pipeline and a heat exchanger;
the heat exchanger is arranged in the inner cavity of the inner tank body; the heat exchanger is fixed at the bottom of the inner tank body of the vehicle-mounted LNG storage tank through welding; an air inlet and an air outlet are respectively arranged at two ends of the heat exchanger; the heat exchanger is any one of a snake-shaped heat exchanger, a cylindrical heat exchanger, a rectangular heat exchanger and a special-shaped heat exchanger; the special-shaped heat exchanger comprises a special-shaped plate, the longitudinal section of the special-shaped plate is arc-shaped, and the arc is tangent to the tank wall of the inner tank body; the special-shaped plate is fixed with the bottom of the inner tank body by welding, and a cavity is formed between the special-shaped plate and the bottom of the inner tank body; the cavity is streamline; the gas transmission pipeline comprises a gas inlet pipeline and a gas outlet pipeline; one end of the air inlet pipeline is connected with an air outlet pipe of the air pump, and the other end of the air inlet pipeline is communicated with an air inlet of the heat exchanger; the end, extending into the LNG storage tank, of the air inlet pipeline is arranged along the outer wall of the inner tank body; one end of the gas outlet pipeline is communicated with a gas outlet of the heat exchanger, and the other end of the gas outlet pipeline is arranged outside the LNG storage tank;
further, the heat exchanger is preferably a special-shaped heat exchanger;
further, the serpentine heat exchanger is of a serpentine structure bent towards the wall of the inner tank body; the snakelike heat exchanger is formed by bending a metal round pipe;
further, the longitudinal section of the cylindrical heat exchanger is circular; the cylindrical heat exchanger is a linear metal round pipe;
further, the longitudinal section of the rectangular heat exchanger is rectangular; the interior of the rectangular heat exchanger is of a hollow structure;
further, an air inlet stop valve and an air outlet stop valve are respectively arranged on the air inlet pipeline and the air outlet pipeline; the air inlet stop valve and the air outlet stop valve are both arranged outside the LNG storage tank;
further, the air pump 1 is arranged outside the LNG storage tank and at the air inlet end of the air transmission pipeline; the air pump 1 provides air for the heat exchanger 4; the air pump 1 is an electromagnetic air pump;
the utility model adopts the above technical scheme after, compare with prior art, have following advantage:
① the supercharging device is arranged at the bottom of the inner tank body of the vehicle-mounted LNG storage tank, and almost does not occupy the external space;
②, the LNG in the storage tank is subjected to heat exchange by using the air output by the air pump, so that the heat exchange efficiency is improved, and the pressurization effect in the LNG storage tank and the utilization rate of the LNG are improved;
③ compared with the traditional external supercharging device, the pipeline is basically inside the vehicle-mounted LNG storage tank, the leakage risk is reduced, and the safety is higher.
In a word, the utility model discloses simple structure, reasonable in design has fine market perspective.
The present invention will be described in detail with reference to the accompanying drawings and examples.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a cross-sectional view of a serpentine heat exchanger;
FIG. 3 is a longitudinal cross-sectional view of a serpentine heat exchanger;
FIG. 4 is a cross-sectional view of a cylindrical heat exchanger;
FIG. 5 is a longitudinal sectional view of a cylindrical heat exchanger;
FIG. 6 is a cross-sectional view of a rectangular parallelepiped heat exchanger;
FIG. 7 is a longitudinal sectional view of a rectangular parallelepiped heat exchanger;
FIG. 8 is a cross-sectional view of a profiled heat exchanger;
FIG. 9 is a longitudinal cross-sectional view of a profiled heat exchanger;
in the figure:
the heat exchanger comprises a 1-air pump, a 2-air inlet stop valve, a 3-air inlet pipeline, a 4-heat exchanger, a 401-serpentine heat exchanger, a 402-cylindrical heat exchanger, a 403-cuboid heat exchanger, a 404-special-shaped heat exchanger, a 5-air outlet pipeline, a 6-air outlet stop valve, a 7-inner tank body and an 8-special-shaped plate.
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described with reference to the accompanying drawings.
Embodiment 1 supercharging device of on-vehicle LNG storage tank
As shown in fig. 1, the utility model provides a supercharging device of a vehicle-mounted LNG storage tank, which comprises an air pump 1, a gas transmission pipeline and a heat exchanger 4;
the air pump 1 is arranged outside the LNG storage tank and at the air inlet end of the air transmission pipeline; the air pump 1 provides air for the heat exchanger 4; the air pump 1 is an electromagnetic air pump;
as shown in fig. 2-9, the heat exchanger 4 is arranged in the inner cavity of the inner tank 7; the heat exchanger 4 is fixed at the bottom of an inner tank body 7 of the vehicle-mounted LNG storage tank through welding; an air inlet and an air outlet are respectively arranged at two ends of the heat exchanger 4;
the heat exchanger 4 is any one of a serpentine heat exchanger 401, a cylindrical heat exchanger 402, a rectangular parallelepiped heat exchanger 403 and a special-shaped heat exchanger 404;
preferably, the heat exchanger 4 is a special-shaped heat exchanger 404;
as shown in fig. 2-3, the serpentine heat exchanger 401 has a serpentine structure that curves toward the tank wall of the inner tank 7; the serpentine heat exchanger 401 is formed by bending a metal round pipe;
as shown in fig. 4-5, the cylindrical heat exchanger 402 has a circular longitudinal cross-section; the cylindrical heat exchanger 402 is a linear metal circular tube;
as shown in fig. 6 to 7, the rectangular parallelepiped heat exchanger 403 has a rectangular longitudinal section; the cuboid-shaped heat exchanger 403 is internally of a hollow structure;
as shown in fig. 8-9, the special-shaped heat exchanger 404 includes a special-shaped plate 8, and the longitudinal section of the special-shaped plate 8 is an arc shape, and the arc shape is tangential to the inner wall of the inner tank 7; the special-shaped plate 8 is fixed with the inner wall of the inner tank body 7 through welding, and a cavity is formed at the bottom of the special-shaped plate 8 and the bottom of the inner tank body 7; the cavity is streamline-shaped, so that the resistance is small when air flows in the heat exchanger, the heat exchange efficiency is high, and the air can continuously exchange heat with liquid LNG at the bottom of the storage tank through the heat exchanger 404 until the liquid LNG is completely vaporized;
when the liquid level of the serpentine heat exchanger 401, the cylindrical heat exchanger 402 and the rectangular heat exchanger 403 is low, the serpentine heat exchanger can only act with gaseous LNG, the supercharging efficiency is reduced, the resistance of air in the heat exchangers is large, and the heat exchange efficiency is slightly low;
as shown in fig. 1, the gas transmission pipeline comprises an air inlet pipeline 3 and an air outlet pipeline 5; the air inlet pipeline 3 and the air outlet pipeline 5 are respectively provided with an air inlet stop valve 2 and an air outlet stop valve 6; the air inlet stop valve 2 and the air outlet stop valve 6 are arranged outside the LNG storage tank; one end of the air inlet pipeline 3 is connected with an air outlet pipe of the air pump 1, and the other end of the air inlet pipeline 3 is communicated with an air inlet of the heat exchanger 4; the air inlet pipeline 3 extends into the LNG storage tank, and one end of the air inlet pipeline extends along the outer wall of the inner tank body 7;
and one end of the air outlet pipeline 5 is communicated with an air outlet of the heat exchanger 4, and the other end of the air outlet pipeline 5 is arranged outside the LNG storage tank so as to conveniently discharge the air after heat exchange.
The working principle and the working process are as follows:
in the vehicle driving process, when LNG storage tank pressure is lower, open air inlet stop valve 2 and stop valve 6 of giving vent to anger, air pump 1 provides the air, and the air gets into heat exchanger 4 from air inlet pipeline 3, because the temperature of LNG in the storage tank is low, and air temperature is high, and the air gives LNG in the storage tank with heat transfer, and the LNG vaporization increases LNG storage tank internal pressure, realizes the effect of pressure boost, and the air after the heat exchange is discharged from air outlet pipeline 5.
The utility model can improve the heat exchange efficiency by arranging the supercharging device in the vehicle-mounted LNG storage tank and exchanging heat with LNG through air, thereby improving the supercharging effect in the LNG storage tank and the utilization rate of LNG; the pressurizing pipeline is simplified, so that the pressurizing device occupies small space; meanwhile, the leakage risk is reduced, and the safety is improved; the utility model discloses simple structure, reasonable in design.
The foregoing is illustrative of the best mode of the invention, and details not described herein are within the common general knowledge of a person of ordinary skill in the art. The protection scope of the present invention is subject to the content of the claims, and any equivalent transformation based on the technical teaching of the present invention is also within the protection scope of the present invention.
Claims (7)
1. The utility model provides a supercharging device of on-vehicle LNG storage tank which characterized in that: comprises an air pump (1), an air pipeline and a heat exchanger (4); the heat exchanger (4) is arranged in the inner cavity of the inner tank body (7); the heat exchanger (4) is fixed at the bottom of an inner tank body (7) of the vehicle-mounted LNG storage tank through welding; both ends of the heat exchanger (4) are respectively provided with an air inlet and an air outlet; the heat exchanger (4) is any one of a serpentine heat exchanger (401), a cylindrical heat exchanger (402), a rectangular heat exchanger (403) and a special-shaped heat exchanger (404); the special-shaped heat exchanger (404) comprises a special-shaped plate (8), the longitudinal section of the special-shaped plate (8) is arc-shaped, and the arc is tangent to the tank wall of the inner tank body (7); the special-shaped plate (8) is fixed with the bottom of the inner tank body (7) through welding, and a cavity is formed between the special-shaped plate (8) and the bottom of the inner tank body (7); the cavity is streamline; the gas transmission pipeline comprises a gas inlet pipeline (3) and a gas outlet pipeline (5); one end of the air inlet pipeline (3) is communicated with an air outlet pipe of the air pump (1), and the other end of the air inlet pipeline (3) is communicated with an air inlet of the heat exchanger (4); the end, extending into the LNG storage tank, of the air inlet pipeline (3) is arranged along the outer wall of the inner tank body (7); one end of the gas outlet pipeline (5) is communicated with a gas outlet of the heat exchanger (4), and the other end of the gas outlet pipeline (5) is arranged outside the LNG storage tank.
2. The pressurization device for the vehicle-mounted LNG tank according to claim 1, wherein: the heat exchanger (4) is a special-shaped heat exchanger (404).
3. The pressurization device for the vehicle-mounted LNG tank according to claim 1, wherein: the serpentine heat exchanger (401) is of a serpentine structure bent towards the wall of the inner tank body (7); the serpentine heat exchanger (401) is formed by bending a metal round pipe.
4. The pressurization device for the vehicle-mounted LNG tank according to claim 1, wherein: the longitudinal section of the cylindrical heat exchanger (402) is circular; the cylindrical heat exchanger (402) is a linear metal round pipe.
5. The pressurization device for the vehicle-mounted LNG tank according to claim 1, wherein: the longitudinal section of the rectangular heat exchanger (403) is rectangular; the cuboid heat exchanger (403) is hollow.
6. The pressurization device for the vehicle-mounted LNG tank according to claim 1, wherein: the air inlet pipeline (3) and the air outlet pipeline (5) are respectively provided with an air inlet stop valve (2) and an air outlet stop valve (6); and the air inlet stop valve (2) and the air outlet stop valve (6) are arranged outside the LNG storage tank.
7. The pressurization device for the vehicle-mounted LNG tank according to claim 1, wherein: the air pump (1) is arranged outside the LNG storage tank and at the air inlet end of the air transmission pipeline; the air pump (1) provides air for the heat exchanger (4); the air pump (1) is an electromagnetic air pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920288835.XU CN210035065U (en) | 2019-03-07 | 2019-03-07 | Supercharging device of vehicle-mounted LNG storage tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920288835.XU CN210035065U (en) | 2019-03-07 | 2019-03-07 | Supercharging device of vehicle-mounted LNG storage tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210035065U true CN210035065U (en) | 2020-02-07 |
Family
ID=69354238
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920288835.XU Expired - Fee Related CN210035065U (en) | 2019-03-07 | 2019-03-07 | Supercharging device of vehicle-mounted LNG storage tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210035065U (en) |
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2019
- 2019-03-07 CN CN201920288835.XU patent/CN210035065U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200207 |