CN207740733U - A kind of low cold damage running gear of liquefied natural gas filling station - Google Patents
A kind of low cold damage running gear of liquefied natural gas filling station Download PDFInfo
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- CN207740733U CN207740733U CN201721816087.5U CN201721816087U CN207740733U CN 207740733 U CN207740733 U CN 207740733U CN 201721816087 U CN201721816087 U CN 201721816087U CN 207740733 U CN207740733 U CN 207740733U
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Abstract
The utility model discloses a kind of low cold damage running gears of liquefied natural gas filling station, including LNG charging machines, LNG immersed pumps, cold-storage heat-insulating housing, LNG storage tank, forced ventilation system and with shell air-heating type gasifier, the LNG heat exchanger tubes being internally provided with longitudinal fin with shell air-heating type gasifier；LNG storage tank has liquid outlet and gas returning port；The liquid outlet of LNG storage tank is connect with the inlet tube of LNG heat exchanger tubes, the escape pipe of LNG heat exchanger tubes and the gas returning port of LNG storage tank connect, the liquid outlet of LNG storage tank is also connected with the inlet of LNG immersed pumps simultaneously, the liquid outlet of LNG immersed pumps is connect by pipeline with LNG charging machines, and the liquid outlet of LNG immersed pumps is also connect by pipeline with gasifier inlet tube.The cold generated in the LNG gas stations course of work can be collected and be used in the cold insulation measure in pump pond by the device, and better cold insulation measure is provided for LNG immersed pumps.
Description
Technical field
The utility model is related to liquefied natural gas filling station device more particularly to a kind of low cold damages of liquefied natural gas filling station
Running gear.
Background technology
With the environmental problem and energy crisis of getting worse, the development of liquefied natural gas (LNG) automobile is more and swifter and more violent,
Therefore the construction of LNG gas stations is gradually risen, and LNG gas stations refer in the form of liquefied natural gas (LNG) to natural gas vapour
The place of vehicle filling.When usual LNG gas stations are to LNG fuel automobile aeratings, need to keep certain pressure in LNG storage tank just just
Just the filling operation of LNG.When job requirement pressure is not achieved in the pressure of storage tank, need to carry out pressure regulation to storage tank with gasifier,
There are two types of the regulating process of storage tank, i.e. immersed pump pressure regulation and from supercharging pressure regulation, and LNG liquid dived by LNG storage tank liquid outlet by LNG
Liquid pump enters pressure regulation gasifier or LNG liquid and is directly entered pressure regulation gasifier by the liquid outlet of LNG storage tank.
The effect of LNG gasification device is to make -162 DEG C LNG storage tank Nei of liquified natural gas endothermic gasification for gaseous natural gas,
Current widely used air-bathing gasifier, uses air as heat source, in heat transfer process, is presented around gasifier pipeline shell
High temperature and pressure is presented in low-temp low-pressure, gasifier outside, and air pressure difference forms free convection, realizes the displacement of Cryogenic air.
Gas phase pipe of the natural gas through LNG storage tank after gasification returns to the gas-phase space of LNG storage tank, and pressure regulation is carried out for LNG storage tank.But
In above-mentioned prior art, the cold that LNG gas stations discharge during LNG gasification is usually taken away by surrounding air, causes
Great energy dissipation, and due to the miniaturization of the intermittence of gasifier work and LNG gas stations, make the storage of these colds
It has difficulties with utilizing, and in the prior art also without corresponding solution.
Invention content
The purpose of this utility model is to provide a kind of low cold damage running gear of liquefied natural gas filling station, which can will
The cold generated in the LNG gas stations course of work is collected and is used in the cold insulation measure in pump pond, is provided for LNG immersed pumps
Better cold insulation measure reduces LNG immersed pumps and pumps the refrigerating loss in the course of work of pond, reduce immersed pump occur cavitation and other
The probability of operation troubles.
The purpose of this utility model is achieved through the following technical solutions：
A kind of low cold damage running gear of liquefied natural gas filling station, described device include LNG charging machines, LNG immersed pumps, store
Cold heat-insulating housing, LNG storage tank, forced ventilation system and with shell air-heating type gasifier, wherein：
The LNG heat exchanger tubes being internally provided with longitudinal fin with shell air-heating type gasifier, the LNG heat exchanger tubes connect
Connect the inlet tube and escape pipe with shell air-heating type gasifier；
There is the LNG storage tank liquid outlet and gas returning port, the liquid outlet to pass through pipeline and the band shell air temperature type gas
Change the inlet tube connection of device, the gas returning port is connect by pipeline with the escape pipe with shell air-heating type gasifier；
The liquid outlet of the LNG storage tank is also connected with the inlet of the LNG immersed pumps simultaneously, and the LNG immersed pumps go out
Liquid mouth is connect by pipeline with the LNG charging machines, and the liquid outlet of the LNG immersed pumps is also empty by pipeline and the band shell
The inlet tube of heating type gasifier connects；
The cold-storage heat-insulating housing is coated on the outside of pump pond, and packing material is cool storage material, in the cold-storage heat-insulating housing
It is internally provided with air-coil；
It is described to go out the air outlet slit at the top of mask and the air inside the cold-storage heat-insulating housing with shell air-heating type gasifier
Coil pipe is connect with the forced ventilation system respectively.
Airstrainer is not closed and be arranged to the tube bank surrounding of the LNG heat exchanger tubes by housings close, tube bank bottom,
Mask is provided in tube bundle top, and bundle profile is at air flow channel.
The forced ventilation system includes axial ventilator and airflow pipe, wherein：
The intake stack of the axial ventilator and the air gone out at the top of mask with shell air-heating type gasifier
Outlet connection；
The exhaust duct of the axial ventilator is connect with the air inlet of the air-coil in the cold-storage heat-insulating housing, institute
The exhaust outlet for stating air-coil is connected to outside air.
Above-mentioned apparatus can be worked by LNG gas stations it can be seen from above-mentioned technical solution provided by the utility model
The cold generated in journey is collected and is used in the cold insulation measure in pump pond, and better cold insulation measure is provided for LNG immersed pumps,
It reduces LNG immersed pumps and pumps the refrigerating loss in the course of work of pond, reduce immersed pump and cavitation and the probability of other operation troubles occurs,
Improve the capacity usage ratio of LNG gas stations.
Description of the drawings
It is required in being described below to embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment
The attached drawing used is briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the utility model
Example, for those of ordinary skill in the art for, without creative efforts, can also be according to these attached drawings
Obtain other accompanying drawings.
Fig. 1 provides the structural schematic diagram of the low cold damage running gear of liquefied natural gas filling station for the utility model embodiment.
Specific implementation mode
With reference to the attached drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out clear
Chu is fully described by, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole realities
Apply example.Based on the embodiments of the present invention, those of ordinary skill in the art are obtained without making creative work
The every other embodiment obtained, belongs to the scope of protection of the utility model.
The utility model embodiment is described in further detail below in conjunction with attached drawing, is as shown in Figure 1 this practicality
New embodiment provides the structural schematic diagram of the low cold damage running gear of liquefied natural gas filling station, and described device mainly includes
LNG charging machines 1, LNG immersed pumps 2, cold-storage heat-insulating housing 3, LNG storage tank 5, forced ventilation system 6 and with shell air-heating type gasifier
9, the wherein connection relation of each section and work relationship be specially：
The LNG heat exchanger tubes 8 being internally provided with longitudinal fin with shell air-heating type gasifier 9, the LNG heat exchanger tubes
The 8 connection inlet tubes 10 and escape pipe 11 with shell air-heating type gasifier 9；
There is the LNG storage tank 5 liquid outlet and gas returning port, the liquid outlet to pass through pipeline and the band shell air temperature type gas
The inlet tube 10 for changing device 9 connects, and the gas returning port is connected by pipeline and the escape pipe 11 with shell air-heating type gasifier 9
It connects；
The liquid outlet of the LNG storage tank 5 is also connected with the inlet of the LNG immersed pumps 2 simultaneously, the LNG immersed pumps 2
Liquid outlet is connect by pipeline with the LNG charging machines 1, the liquid outlets of the LNG immersed pumps 2 also by pipeline and the band outside
The inlet tube 10 of shell air-heating type gasifier 9 connects, when the LNG storage tank 5 can not carry out being pressurized pressure regulation effect from supercharging pressure regulation or certainly
When rate is too low, then using pump supercharging voltage regulating mode；
The cold-storage heat-insulating housing 3 is coated on the outside of pump pond, and packing material is cool storage material, in the cold-storage heat-insulating housing 3
Be internally provided with air-coil 4；
Inside the air outlet slit for going out 7 top of mask with shell air-heating type gasifier 9 and the cold-storage heat-insulating housing 3
Air-coil 4 is connect with the forced ventilation system 6 respectively.
In the specific implementation, the tube bank surrounding of LNG heat exchanger tubes 8, by housings close, tube bank bottom is not closed and air is arranged
Mask is provided in tube bundle top in filter screen, and for bundle profile at air flow channel, it is empty that air can enter the band shell from tube bank bottom
In heating type gasifier 9.
In addition, above-mentioned forced ventilation system 6 may include axial ventilator and airflow pipe, wherein：
The intake stack of the axial ventilator goes out going out for 7 top of mask with described with shell air-heating type gasifier 9
Mouth connection；
The exhaust duct of the axial ventilator is connect with the air inlet of the air-coil 4 in the cold-storage heat-insulating housing 3,
The exhaust outlet of the air-coil 4 is connected to outside air.It, will by forced ventilation system 6 during LNG storage tank pressure regulation
8 outer cold air of LNG heat exchanger tubes orientation is delivered in the air-coil 4 in cold-storage heat-insulating housing 3, the phase filled in cold-storage heat-insulating housing 3
Become cool storage material with cold air exchange heat and store this part cold, cold insulation is carried out to pump pond using this part cold
It is heat-insulated, improve cooling capacity utilization rate, the efficiency of the functional reliability of immersed pump and entire aerator.
The specific work process of above-mentioned apparatus is：
When pressure is less than operating pressure in LNG storage tank 5,5 liquid outlet valve of LNG storage tank is opened, LNG liquid in LNG storage tank 5
Body enters fluid pipeline by liquid outlet, and LNG liquid sequentially enters gasifier inlet tube 10 and LNG directly or through LNG immersed pumps 2
Heat exchanger tube 8；Forced ventilation system 6 is opened simultaneously, and air passes through air mistake under the effect of pumping of ventilation blower from 9 bottom of gasifier
Strainer enters in 9 shell of gasifier, parallel baffled LNG heat exchanger tubes 8, and the LNG liquid in LNG heat exchanger tubes 8 absorbs the heat in air
Amount, the escape pipe 11 through gasifier 9 is discharged after gasification, and the gas phase pipe through LNG storage tank 5 returns to the gas-phase space of LNG storage tank 5,
It is pressurized for LNG storage tank 5.Cold air after cooling passes through the intake stack for going out mask 7 and entering ventilation blower of gasifier 9, then warp beam
The exhaust duct of streaming ventilation blower enters in cold-storage heat-insulating housing 3, the air-coil 4 by being arranged in cold-storage heat-insulating housing 3 and cold-storage
The cool storage material heat exchange filled in heat-insulating housing 3, cold is stored, the air of temperature recovery is then from the outlet air of air-coil 4
Mouth is discharged into air.
Cold-storage heat-insulating housing 3 provides a low temperature preferably because absorbing and storing the cold of cold air, for pump pond
Working environment reduces the cold damage of LNG immersed pumps in the process of running, and then reduces LNG immersed pumps and the failures such as cavitation occur
Probability.
Meanwhile the utility model and makes fin side change by increasing outer housing for gasifier by forced ventilation system
Heat becomes forced-convection heat transfer from heat transfer free convection, enhances gasification efficiency, reduces the volume of gasifier.
It is worth noting that, the content not being described in detail in the utility model embodiment belongs to this field professional technique people
The prior art well known to member.
The preferable specific implementation mode of the above, only the utility model, but the scope of protection of the utility model is not
It is confined to this, any one skilled in the art can readily occur in the technical scope that the utility model discloses
Change or replacement, should be covered within the scope of the utility model.Therefore, the scope of protection of the utility model should
Subject to the scope of protection of the claims.
Claims (3)
1. a kind of low cold damage running gear of liquefied natural gas filling station, which is characterized in that described device includes LNG charging machines, LNG
Immersed pump, cold-storage heat-insulating housing, LNG storage tank, forced ventilation system and with shell air-heating type gasifier, wherein：
The LNG heat exchanger tubes being internally provided with longitudinal fin with shell air-heating type gasifier, the LNG heat exchanger tubes connect institute
State inlet tube and escape pipe with shell air-heating type gasifier；
There is the LNG storage tank liquid outlet and gas returning port, the liquid outlet to pass through pipeline and the band shell air-heating type gasifier
Inlet tube connection, the gas returning port connect by pipeline with the escape pipe with shell air-heating type gasifier；
The liquid outlet of the LNG storage tank is also connected with the inlet of the LNG immersed pumps, the liquid outlet of the LNG immersed pumps simultaneously
It is connect with the LNG charging machines by pipeline, the liquid outlet of the LNG immersed pumps also passes through pipeline and the band shell air temperature type
The inlet tube of gasifier connects；
The cold-storage heat-insulating housing is coated on the outside of pump pond, and packing material is cool storage material, in the inside of the cold-storage heat-insulating housing
It is provided with air-coil；
It is described to go out the air outlet slit at the top of mask and the air-coil inside the cold-storage heat-insulating housing with shell air-heating type gasifier
It is connect respectively with the forced ventilation system.
2. the low cold damage running gear of liquefied natural gas filling station according to claim 1, which is characterized in that
The tube bank surrounding of the LNG heat exchanger tubes is not closed and is arranged airstrainer by housings close, tube bank bottom, restraining
Mask is provided in top, and bundle profile is at air flow channel.
3. the low cold damage running gear of liquefied natural gas filling station according to claim 1, which is characterized in that the forced ventilation
System includes axial ventilator and airflow pipe, wherein：
The intake stack of the axial ventilator is connect with the outlet gone out at the top of mask with shell air-heating type gasifier；
The exhaust duct of the axial ventilator is connect with the air inlet of the air-coil in the cold-storage heat-insulating housing, the sky
The exhaust outlet of gas coil pipe is connected to outside air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721816087.5U CN207740733U (en) | 2017-12-22 | 2017-12-22 | A kind of low cold damage running gear of liquefied natural gas filling station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721816087.5U CN207740733U (en) | 2017-12-22 | 2017-12-22 | A kind of low cold damage running gear of liquefied natural gas filling station |
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| Publication Number | Publication Date |
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| CN207740733U true CN207740733U (en) | 2018-08-17 |
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| CN201721816087.5U Active CN207740733U (en) | 2017-12-22 | 2017-12-22 | A kind of low cold damage running gear of liquefied natural gas filling station |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115468109A (en) * | 2022-09-13 | 2022-12-13 | 北京石油化工学院 | Novel pump-heat synergistic pressurized liquid hydrogen refueling station system and use method thereof |
-
2017
- 2017-12-22 CN CN201721816087.5U patent/CN207740733U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115468109A (en) * | 2022-09-13 | 2022-12-13 | 北京石油化工学院 | Novel pump-heat synergistic pressurized liquid hydrogen refueling station system and use method thereof |
| CN115468109B (en) * | 2022-09-13 | 2023-11-03 | 北京石油化工学院 | Novel pump-heat collaborative pressurizing liquid hydrogen hydrogenation station system and application method thereof |
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