CN210319385U

CN210319385U - Movable natural gas filling vehicle

Info

Publication number: CN210319385U
Application number: CN201920999625.1U
Authority: CN
Inventors: 吴宸栋; 吴志锐; 李波; 熊英
Original assignee: Henan Charui Special Equipment Co ltd
Current assignee: Henan Charui Special Equipment Co ltd
Priority date: 2019-06-30
Filing date: 2019-06-30
Publication date: 2020-04-14
Anticipated expiration: 2029-06-30

Abstract

The utility model provides a mobile natural gas filling vehicle, which comprises a vehicle body, wherein the vehicle body is provided with a carriage, and a gas filling system is arranged in the carriage; the gas filling system comprises an LNG storage tank, a refrigerating device, a gas selling device, a storage battery and a control cabinet; the LNG storage tank is provided with an LNG inlet, an LNG outlet, a refrigerant inlet, a refrigerant outlet and a cable port; a purity detector and an electromagnetic valve are arranged at the LNG inlet; the LNG outlet pipeline is connected to a gas selling device; a liquid level meter and a pressure sensor are arranged in the LNG storage tank; the refrigerating device comprises a box body, wherein a liquid nitrogen tank and a digital pressure pump connected with a pipeline of the liquid nitrogen tank are arranged in the box body; the refrigerating device also comprises a spiral heat exchange tube; the liquid level meter, the pressure sensor, the digital pressure pump, the purity detector and the electromagnetic valve are all electrically connected to the control cabinet. The utility model discloses a set up the gas filling system on portable automobile body, provide a lightweight essentially, movable's gas station, for traditional gas station, the running cost is lower.

Description

Movable natural gas filling vehicle

Technical Field

The utility model relates to a natural gas field, concretely relates to portable natural gas air entrainment car.

Background

With the rising of the price of crude oil at present, natural gas as a gasoline substitute fuel has been popularized and applied in the automobile field, however, at present, the mode of filling natural gas for vehicles generally needs to go to a gas filling station similar to a gas filling station, the gas filling station is not common at home, the construction, maintenance and operation costs of the gas filling station are rapidly increased, the natural gas price is promoted to rise continuously, the use cost of natural gas vehicles is increased continuously, and therefore, an economic, rapid and safe gas filling mode is necessary for vehicles.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a portable natural gas filling car to prior art not enough, concrete scheme is as follows:

a movable natural gas filling vehicle comprises a vehicle body, wherein a carriage is arranged on the vehicle body, and a gas filling system is arranged in the carriage; the gas filling system comprises an LNG storage tank, a refrigerating device, a gas selling device, a storage battery and a control cabinet; the LNG storage tank is provided with an LNG inlet, an LNG outlet, a refrigerant inlet, a refrigerant outlet and a cable port; a purity detector is arranged at the LNG inlet, and a solenoid valve is arranged at the LNG inlet relative to the inner side of the purity detector; the LNG outlet is connected to the gas selling device through a pipeline; a liquid level meter and a pressure sensor are arranged in the LNG storage tank; the refrigerating device comprises a box body, a liquid nitrogen tank and a digital pressure pump connected with a pipeline of the liquid nitrogen tank are arranged in the box body, and the digital pressure pump and the liquid nitrogen tank are respectively connected to the refrigerant inlet and the refrigerant outlet through heat insulation pipes; the refrigeration device also comprises a spiral heat exchange tube arranged in the LNG storage tank, and two ends of the heat exchange tube are respectively connected to the refrigerant inlet and the refrigerant outlet; the heat insulation pipes are provided with one-way valves; the storage battery supplies power to the whole gas filling system; the digital pressure pump, the purity detector, the electromagnetic valve and the pressure sensor are all electrically connected to the control cabinet; and a touch screen is arranged on the control cabinet.

Based on the above, the LNG storage tank includes interior casing and shell body, be the vacuum intermediate layer between interior casing, the shell body, the vacuum intermediate layer intussuseption is filled with thermal insulation material.

Based on the aforesaid, be equipped with a plurality of ultralow temperature foil gauges of arranging along circumference on the interior inner wall of casing, the foil gauge is in with the setting stress analysis device electric connection outside the LNG storage tank, stress analysis device electric connection to the switch board.

Based on the above, a circulating device is arranged in the LNG storage tank, the circulating device comprises a circulating pump arranged at the bottom of the LNG storage tank, a spray pipe extending to the top of the LNG storage tank is arranged on the circulating pump, and a spray is arranged at the end part of the spray pipe; the circulating pump with switch board electric connection.

Based on the above, the control cabinet is provided with an alarm.

Based on the above, the carriage top be equipped with the solar cell panel that the battery is connected, solar cell panel's left side is through setting up two at least articulated framves at the carriage top and carriage articulated installation, and solar cell panel's right side and the flexible end articulated installation of setting at the electric push rod at the carriage top.

Based on the above, the inner shell and the outer shell are both made of 304 stainless steel, and the heat insulation material is heat insulation paper or pearl sand or a mixture of the heat insulation paper and the pearl sand.

Based on the above, the box body is a heat preservation box body.

Based on the above, be equipped with the air discharge fan on the carriage lateral wall.

The utility model discloses relative prior art has substantive characteristics and progress, specifically speaking, the utility model has the following advantages:

1. the utility model provides a portable natural gas filling car, including the automobile body, be equipped with the carriage on the automobile body, be equipped with the air entrainment system in the carriage, the air entrainment system includes the LNG storage tank, for the refrigerating plant of the inside cooling of LNG storage tank, sell gas device, for the battery of whole air entrainment system power supply and the switch board that whole air entrainment system controlled with the LNG storage tank is connected. Therefore, the utility model essentially provides a lightweight, movable gas station.

2. The utility model discloses in, through at the inside circulating pump that sets up of LNG storage tank, utilize the continuous circulation of LNG in the circulating pump messenger LNG storage tank to flow, can prevent that LNG from leading to the emergence of the phenomenon of rolling because of appearing the layering in the LNG storage tank.

3. The utility model discloses in, through set up pressure sensor inside the LNG storage tank, arrange a plurality of ultra-low temperature foil gauges along circumference on the interior shells inner wall of LNG storage tank, ultra-low temperature foil gauge and the stress analysis device electric connection who sets up outside the LNG storage tank, and pressure sensor and stress analysis device electric connection are to the switch board again, this structural design can be convenient for observe the produced influence of the change of LNG storage tank internal pressure and pressure to the shell shape in the LNG storage tank, safe use for whole air entrainment system provides a guarantee.

Drawings

Fig. 1 is a schematic structural diagram of the gas filling system in the utility model.

Fig. 2 is a schematic diagram of the external structure of the present invention.

Fig. 3 is a structural diagram of the LNG storage tank of the present invention.

In the figure: 1. a vehicle body; 2. a carriage; 3. an exhaust fan; 4, an LNG storage tank; 4-1. outer shell; 4-2. inner shell; 4-3, vacuum interlayer; 4-4. cable port; 5. a heat preservation box body; 6. a gas selling device; 7. a circulation pump; 8. a stress analysis device; 9. a control cabinet; 9-1, an alarm; 9-2, touch screen; 10. a liquid nitrogen tank; 11. a pressure pump; 12. a heat insulating pipe; 13. an ultra-low temperature strain gauge; 14. a pressure sensor; 15. a storage battery; 16. a one-way valve; 17. a refrigerant inlet; 18. a refrigerant outlet; an LNG inlet; 20. an LNG outlet; 21. a heat exchange pipe; 22. a solar panel; 23. a hinged frame; 24. an electric push rod; 25. a liquid level meter.

Detailed Description

The technical solution of the present invention will be described in further detail through the following embodiments.

Examples

As shown in fig. 1-3, the utility model provides a portable natural gas filling car, including automobile body 1, be equipped with carriage 2 on the automobile body 1, be equipped with the air entrainment system in the carriage 2, the air entrainment system includes LNG storage tank 4, refrigerating plant, sells gas device 6, battery 15 and switch board 9.

Because the utility model belongs to the special equipment in the air entrainment field is equipped with air discharge fan 3 on 2 lateral walls in the carriage for the circulation of air in 2 carriages is convenient.

The LNG storage tank 4 comprises an inner shell 4-2 and an outer shell 4-1, a vacuum interlayer 4-3 is arranged between the inner shell 4-2 and the outer shell 4-1, and heat insulation materials are filled in the vacuum interlayer 4-3. Wherein, the inner shell 4-2 and the outer shell 4-1 are both made of 304 stainless steel materials, and the heat insulation material is heat insulation paper or pearl sand or a mixture of the heat insulation paper and the pearl sand.

The LNG storage tank 4 is provided with an LNG inlet 19 for filling LNG into the tank body and an LNG outlet 20 connected to the gas selling device 6. In order to facilitate the detection of whether the LNG to be stored in the LNG storage tank 4 is qualified, a purity detector is disposed at the LNG inlet 19, a solenoid valve is disposed at the LNG inlet 19 opposite to the inner side of the purity detector, and the LNG outlet 20 is connected to the gas selling device 6 through a pipeline; the purity detector, the electromagnetic valve and the gas selling device 6 are all electrically connected to the control cabinet 9.

In order to facilitate the measurement of the LNG level in the LNG storage tank 4, a level gauge 25 electrically connected to the control cabinet 9 is provided in the LNG storage tank 4.

LNG storage tank 4 is in long-time use, and its inside some boil-off gas that can produce, also BOG, and traditional mode is generally with its atmosphere of directly discharging, the utility model discloses in order to be convenient for utilize it once more, liquefy it through refrigerating plant. For this purpose, the LNG tank 4 is further provided with a refrigerant inlet 17 and a refrigerant outlet 18. The refrigerating device comprises a heat preservation box body 5, a liquid nitrogen tank 10 and a digital pressure pump 11 connected with the liquid nitrogen tank 10 through a pipeline are arranged in the box body, the digital pressure pump 11 and the liquid nitrogen tank 10 are respectively connected to a refrigerant inlet 17 and a refrigerant outlet 18 through a heat insulation pipe 12, and a check valve 16 is arranged on each heat insulation pipe 12; in addition, the refrigeration device further comprises a spiral heat exchange tube 21 arranged in the LNG storage tank 4, and two ends of the heat exchange tube 21 are respectively connected to the refrigerant inlet 17 and the refrigerant outlet 18.

To facilitate the observation of the pressure inside the LNG storage tank 4, a pressure sensor 14 is provided at the top of the inner wall of the LNG storage tank 4. It should be noted that the digital pressure pump 11 and the pressure sensor 14 are both electrically connected to the control cabinet 9, and a touch screen 9-2 is disposed on the control cabinet 9.

The storage battery 15 supplies power to the whole gas filling system, and a solar cell panel 22 connected with the storage battery 15 is arranged at the top of the carriage 2 in consideration of the energy-saving principle. In order to facilitate the installation of the solar cell panel 22 and maximize the solar cell panel 22 to receive the sunlight, the left side of the solar cell panel 22 is hinged with the carriage 2 through at least two hinge brackets 23 arranged at the top of the carriage 2, and the right side of the solar cell panel 22 is hinged with the telescopic end of the electric push rod 24 arranged at the top of the carriage 2.

Because the LNG storage tank 4 inevitably fills LNG with different densities in the using process, the LNG can be layered after being used for a long time, and finally the rolling phenomenon can occur, which is very unfavorable for the safe storage of the LNG. For the emergence that prevents LNG storage tank 4 enstrophe and roll the phenomenon, be equipped with circulating device in the LNG storage tank 4, circulating device is including setting up the circulating pump 7 of LNG storage tank 4 bottom, be equipped with the spray tube that extends to LNG storage tank 4 top on the circulating pump 7, the tip of spray tube is equipped with sprays, and circulating pump 7 with 9 electric connection of switch board, through the settlement of switch board 9 for 7 intermittent type nature work of circulating pump.

During the use of the LNG tank 4, a rapid cooling phenomenon may occur in the tank body due to the filling of natural gas, or an internal pressure may be rapidly increased due to a large amount of BOG gas generated in the tank body due to environmental reasons, which may directly cause a change in the internal structure of the tank. For this reason, be equipped with a plurality of ultralow temperature foil gages 13 that arrange along circumference on the interior wall of casing 4-2, ultralow temperature foil gage 13 and setting up are in stress analysis device 8 electric connection outside LNG storage tank 4, stress analysis device 8 electric connection to switch board 9, through this kind of structural design, the operating personnel can judge whether interior casing 4-2 takes place deformation and safe in utilization because of some reasons.

Additionally, a specially-made cable port 4-4 for electrically connecting the internal elements of the tank body and the control cabinet 9 is further arranged on the LNG storage tank 4; the control cabinet 9 is also provided with an alarm 9-1 aiming at the abnormal phenomenon of the gas filling system.

The utility model discloses concrete working method and principle: the utility model discloses the primary structure can divide into movable automobile body 1, sets up carriage 2 and the air entrainment system of setting in carriage 2 in automobile body 1. The gas filling system is used for filling gas into the vehicle and comprises an LNG storage tank 4 and a gas selling device 6 connected with the LNG storage tank.

When the LNG is filled into the LNG storage tank 4, the purity detector and the electromagnetic valve are arranged at the LNG inlet 19 and are electrically connected to the control cabinet 9, and when the detection result of the purity detector is unqualified, the control cabinet 9 gives an alarm; when the monitoring result of the purity detector is qualified, the control cabinet 9 opens the electromagnetic valve to start filling operation; when the level meter 25 in the LNG storage tank 4 detects that the filling amount reaches a specified value, the control cabinet 9 closes the electromagnetic valve and the filling operation is terminated.

LNG storage tank 4 can lead to the internal LNG layering of jar because the LNG of annotating different density, and this kind of phenomenon can lead to LNG to roll, influences safe storage, so set up a circulating pump 7 in LNG storage tank 4, circulating

pump

7 and 9 electric connection of switch board, 7 intermittent type nature work of switch board 9 control circulating pump to prevent the emergence of the phenomenon of rolling is avoided in the LNG layering.

During the use process of the LNG storage tank 4, a large amount of BOG gas may be generated in the tank body due to the absorption of external heat by some reasons, the gas may cause the pressure in the LNG storage tank 4 to rise, and the control cabinet 9 controls the digital pressure pump 11 to be turned on or off according to the value measured by the pressure sensor 14; when the pressure value is too high, starting the digital pressure pump 11 to re-liquefy the BOG into LNG; when the pressure value is normal, the control cabinet 9 closes the digital pressure pump 11.

Under the condition that the gas filling operation or LNG storage tank 4 absorb a large amount of heat, all can arouse the internal pressure of jar to take place unusual change, these changes can lead to the internal casing 4-2 of jar to take place to deform, consider jar body safe in utilization, the utility model discloses an ultra-low temperature foil gage 13 and stress analysis device 8 come to carry out real-time supervision to internal casing 4-2 form to with result transmission to switch board 9, when interior casing 4-2 takes place dangerous deformation, switch board 9 can send the warning.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to preferred embodiments, it should be understood by those skilled in the art that: the invention can be modified or equivalent substituted for some technical features; without departing from the spirit of the present invention, it should be understood that the scope of the claims is intended to cover all such modifications and variations.

Claims

1. The utility model provides a portable natural gas filling car which characterized in that: the vehicle comprises a vehicle body, wherein a carriage is arranged on the vehicle body, and an air charging system is arranged in the carriage; the gas filling system comprises an LNG storage tank, a refrigerating device, a gas selling device, a storage battery and a control cabinet; the LNG storage tank is provided with an LNG inlet, an LNG outlet, a refrigerant inlet, a refrigerant outlet and a cable port; a purity detector is arranged at the LNG inlet, and a solenoid valve is arranged at the LNG inlet relative to the inner side of the purity detector; the LNG outlet is connected to the gas selling device through a pipeline; a liquid level meter and a pressure sensor are arranged in the LNG storage tank; the refrigerating device comprises a box body, a liquid nitrogen tank and a digital pressure pump connected with a pipeline of the liquid nitrogen tank are arranged in the box body, and the digital pressure pump and the liquid nitrogen tank are respectively connected to the refrigerant inlet and the refrigerant outlet through heat insulation pipes; the refrigeration device also comprises a spiral heat exchange tube arranged in the LNG storage tank, and two ends of the heat exchange tube are respectively connected to the refrigerant inlet and the refrigerant outlet; the heat insulation pipes are provided with one-way valves; the storage battery supplies power to the whole gas filling system; the digital pressure pump, the purity detector, the electromagnetic valve and the pressure sensor are all electrically connected to the control cabinet; and a touch screen is arranged on the control cabinet.

2. The mobile natural gas dispensing vehicle of claim 1, wherein: the LNG storage tank comprises an inner shell and an outer shell, wherein a vacuum interlayer is arranged between the inner shell and the outer shell, and heat insulating materials are filled in the vacuum interlayer.

3. The mobile natural gas dispensing vehicle of claim 2, wherein: be equipped with a plurality of ultralow temperature foil gauges of arranging along circumference on the interior inner wall of casing, the foil gauge is in with the setting stress analysis device electric connection outside the LNG storage tank, stress analysis device electric connection to the switch board.

4. The mobile natural gas dispensing vehicle of claim 1, wherein: a circulating device is arranged in the LNG storage tank and comprises a circulating pump arranged at the bottom of the LNG storage tank, a spray pipe extending to the top of the LNG storage tank is arranged on the circulating pump, and spraying is arranged at the end part of the spray pipe; the circulating pump with switch board electric connection.

5. The mobile natural gas dispensing vehicle of claim 1, wherein: and an alarm is arranged on the control cabinet.

6. A mobile natural gas dispensing vehicle according to any one of claims 1 to 5, wherein: the solar energy battery board that the carriage top be equipped with the battery is connected, solar energy battery board's left side is articulated the installation through two at least articulated framves that set up at the carriage top and carriage, and solar energy battery board's right side is articulated the installation with the flexible end that sets up the electric push rod at the carriage top.

7. The mobile natural gas dispensing vehicle of claim 2, wherein: the inner shell and the outer shell are both made of 304 stainless steel materials, and the heat insulation material is heat insulation paper or pearl sand or a mixture of the heat insulation paper and the pearl sand.

8. The mobile natural gas dispensing vehicle of claim 1, wherein: the box body is a heat preservation box body.

9. The mobile natural gas dispensing vehicle of claim 1, wherein: and an exhaust fan is arranged on the side wall of the carriage.