CN109838689A - LNG fuel air supply system and LNG vehicle - Google Patents
LNG fuel air supply system and LNG vehicle Download PDFInfo
- Publication number
- CN109838689A CN109838689A CN201711214961.2A CN201711214961A CN109838689A CN 109838689 A CN109838689 A CN 109838689A CN 201711214961 A CN201711214961 A CN 201711214961A CN 109838689 A CN109838689 A CN 109838689A
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- valve
- pressure
- air supply
- supply system
- control module
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- 239000000446 fuel Substances 0.000 title claims abstract description 144
- 239000003949 liquefied natural gas Substances 0.000 claims abstract description 76
- 238000012360 testing method Methods 0.000 claims abstract description 8
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000007788 liquid Substances 0.000 claims description 60
- 238000004891 communication Methods 0.000 claims description 8
- 239000002737 fuel gas Substances 0.000 claims description 6
- 238000002309 gasification Methods 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 235000015110 jellies Nutrition 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
Abstract
Present invention discloses a kind of LNG fuel air supply system and LNG vehicles, which includes control module；Fuel cylinder, for loading liquified natural gas；Pressure sensitive device, for detecting the pressure in the fuel cylinder, the pressure sensitive device is electrically connected with the control module, and be will test pressure information and be sent to the control module；Valve member is electrically connected with the control module, the pressure information that the control module is detected according to the pressure sensor device, is controlled the valve member and is corresponded to opening or closing for valve.LNG fuel air supply system and LNG vehicle of the invention can automatically control opening or closing for corresponding valve, safer and more reliable and stable.
Description
Technical field
The present invention relates to liquefied natural gas field, in particular to a kind of LNG fuel air supply system.
Background technique
Liquefied natural gas (liquefied natural gas, abbreviation LNG) is wide as a kind of novel green energy resource
It is general to be applied to life, the every aspect in production, for example, more and more vehicles are using LNG as power fuel.Vehicle at present
On LNG fuel air supply system mainly use manual operation cryogenic globe valve realize fuel cylinder emptying, go out liquid or pressurization etc.
Function, but it is this by manually-operated mode, there are problems, for example, when driving, finding the hypotony of fuel cylinder, then
After needing driver to stop, manual operation cryogenic globe valve to be pressurized to fuel cylinder, operates very not convenient；And cryogenic globe valve
Handwheel frequently open and close, the seal assembly that will lead in cryogenic globe valve is prone to wear, and is easily leaked after abrasion；This
Outside, because the temperature of LNG is extremely low, probably in -160 degrees centigrades, the handwheel of cryogenic globe valve is also easy to freeze.
Summary of the invention
In order to solve manually-operated cryogenic globe valve present in the relevant technologies, there are inconvenient, easy to wear, easy jellies
The problem of knot, the present invention provides a kind of LNG fuel air supply systems.
The present invention separately provides a kind of LNG vehicle, which has above-mentioned fuel air supply system.
The present invention provides a kind of LNG fuel air supply system, comprising:
Control module；
Fuel cylinder, for loading liquified natural gas；
Pressure sensitive device, for detecting the pressure in the fuel cylinder, the pressure sensitive device and the control mould
Block electrical connection, and will test pressure information and be sent to the control module；
Valve member is electrically connected with the control module, and the control module is detected according to the pressure sensor device
Pressure information controls the valve member and corresponds to opening or closing for valve.
Optionally, the LNG fuel air supply system further includes pressurizing pack, and the valve member includes boost valve, institute
Boost valve is stated to be connected between the fuel cylinder and the pressurizing pack by pressure pipeline；
The boost valve is electrically connected with the control module, when the pressure sensitive device detects the fuel cylinder
When pressure is lower than preset minimum pressure limit value, the control module controls the boost valve and opens, and makes in the fuel cylinder
Liquid by the pressurizing pack carry out gasification pressurization after turn again in the fuel cylinder；When the pressure sensitive device is examined
When measuring the pressure of the fuel cylinder and reaching normal pressure value, the control module controls the boost valve and closes.
Optionally, the valve member further includes liquid valve door and pressure relief valve, and the liquid valve door passes through liquid outlet pipe
It is connected to the fuel cylinder, the pressure relief valve is connected to by relief pipeline with the fuel cylinder；
The liquid valve door is electrically connected with the control module, when the LNG fuel air supply system is by air feed equipment point
After fire, the control module controls the liquid valve door and opens, when being stopped working by air feed equipment for the LNG fuel air supply system
Afterwards, the control module controls the liquid valve door and closes；
The pressure relief valve is electrically connected with the control module, when the pressure sensitive device detects the fuel cylinder
When pressure is higher than preset maximum pressure limit value, the control module controls the pressure relief valve and opens, and unloads to fuel cylinder
Pressure, when the pressure sensitive device detects that the pressure of the fuel cylinder reaches normal pressure value, the control module control
The pressure relief valve is closed.
Optionally, the boost valve, liquid valve door and the pressure relief valve are small-sized low temperature resistant automatic valve.
Optionally, the boost valve, the liquid valve door and the low temperature resistant temperature of the pressure relief valve be -200 DEG C~-
190℃；
The boost valve, the liquid valve door and the pressure relief valve are equal are as follows: electrically-controlled valve, solenoid valve or motor-driven valve.
Optionally, the LNG fuel air supply system further includes safety valve, and the safety valve is with the pressure relief valve in parallel
Mode be mounted on the relief pipeline so that the safety valve and the pressure relief valve can fuel cylinders described in independent control
Pressure release；When pressure value is more than preset safe pressure value in the relief pipeline or the fuel gas bottle, the safety valve is certainly
It is dynamic to open, the fuel medium of superpressure is discharged outward.
Optionally, the LNG fuel air supply system further includes that liquid shut-off valve, the liquid shut-off valve out are mounted on connection institute out
In the liquid outlet pipe for stating fuel cylinder and the liquid valve door, the liquid shut-off valve out is used to manually control the confession of the fuel cylinder
Liquid.
Optionally, the LNG fuel air supply system further includes pressurization shut-off valve, and the pressurization shut-off valve is mounted on connection institute
On the pressure pipeline for stating fuel cylinder and the boost valve, the pressurization shut-off valve is used to manually control the increasing of the fuel cylinder
Pressure.
Optionally, the control module includes controller and the communication unit that is electrically connected with the controller, described logical
Believe that mode and long-range control and monitor console communicate to connect unit by wireless communication.
The present invention separately provides a kind of LNG vehicle, including vehicle body, engine, running gear and LNG fuel described above
Air supply system, the LNG fuel air supply system provide power for the engine, running gear row described in the engine driving
It walks.
The technical solution that the embodiment of the present invention provides can include the following benefits:
LNG fuel air supply system of the invention is by setting control module, pressure sensitive device and valve member, so that control
Molding root tuber corresponds to opening or closing for valve according to the testing result control valve component of pressure sensitive device, realizes and supplies system
Liquid, pressurization and the automatic control of pressure release, so that the system automation operation realized has more human nature without manually being operated
Change, avoid the maloperation or leakage operation of personnel, also avoid in traditional technology manually-operated gate because cryogenic liquid easily freezes can not
The problem of unlatching, so that the LNG fuel air supply system is more safely, conveniently and stable.
LNG vehicle of the invention is safer and more reliable and stable because using above-mentioned LNG fuel air supply system.
It should be understood that the above general description and the following detailed description are merely exemplary, this can not be limited
Invention.
Detailed description of the invention
The drawings herein are incorporated into the specification and forms part of this specification, and shows and meets implementation of the invention
Example, and in specification together principle for explaining the present invention.
Fig. 1 is the structural schematic diagram of LNG fuel air supply system of the invention in the first embodiment.
Fig. 2 is the structural schematic diagram of LNG fuel air supply system of the invention in a second embodiment.
Specific embodiment
Principle and structure in order to further illustrate the present invention carry out the preferred embodiment of the present invention now in conjunction with attached drawing detailed
It describes in detail bright.
The present invention provides a kind of LNG fuel air supply system, which is applicable to vehicle or ship, especially
It is suitable for vehicles.Particularly, the present invention provides a kind of LNG vehicle comprising vehicle body, engine, running gear and LNG combustion
Expect that air supply system, the LNG fuel air supply system provide power, engine driving running gear movement, so that the LNG for engine
Vehicle can travel under the driving of the engine.LNG fuel air supply system of the invention is stressed below.
First embodiment
As shown in Figure 1, it is the structural schematic diagram of LNG fuel air supply system of the invention in the first embodiment.This hair
Bright LNG fuel air supply system 10 includes control module 11, fuel cylinder 12, pressure sensitive device 13 and valve member 14.Valve
Each valve of component 14 is electrically connected with control module 11, and each valve of valve member 14 is connected by each pipeline with fuel cylinder 13
It is logical.Pressure sensitive device 13 is used to detect the pressure in fuel cylinder 12, is electrically connected with control module 11.11 basis of control module
Each valve of the testing result control valve component 14 of pressure sensitive device 13 opens or closes, in this way, realizing to valve group
The automatic control of each valve of part 14.
Specifically, control module 11 includes controller, which can be CPU, the MCU for executing arithmetic sum logical operation
Equal processors.
In other implementations, which may also include the communication unit being electrically connected with the controller, this is logical
Believe that mode and long-range control and monitor console communicate to connect unit by wireless communication, realizing that long-range control and monitor console can supply the LNG fuel is
The real time monitoring of system.Whereby, when the particular surroundings such as fire, pipeline fracture occur, long-range control and monitor console can supply LNG fuel
System carries out emergency cut-off.
Fuel cylinder 12 can be placed on the tail portion of vehicle for loading liquified natural gas.The dispensing head of fuel cylinder 12
Place is provided with liquid outlet, pressure relief opening and boost port.Liquified natural gas in fuel cylinder 12 is filled after liquid outlet output by gasification
It sets and gasifies, provide fuel gas source for engine.
Pressure sensitive device 13 is sensor, is provided on the pipeline that fuel gas bottle 12 is connected.
Each valve of valve member 14 is small-sized automatic valve resistant to high temperature, which can be electrically-controlled valve, electricity
Magnet valve or motor-driven valve.
It should be noted that each valve of valve member 14 is not only small in size, volume is about 60mm~150mm, but not only
It is confined in the size range, and it is with splendid low temperature tolerance characteristics, reachable -200 DEG C~-190 DEG C of low temperature resistant temperature, and
The low temperature resistant temperature of automatic valve of roughly the same volume currently on the market is -40 DEG C.
Each valve of valve member 14 includes boost valve 141, liquid valve door 142 and pressure relief valve 143.
LNG fuel air supply system 10 further includes pressurizing pack 15, which can be pressure pipe fitting.
Boost valve 141 is connected to by pressure pipeline 191 with fuel cylinder 12, pressurizing pack 15, and be connected to fuel cylinder 12,
Between pressurizing pack 15.Wherein, pressure pipeline 191 is connected to the boost port of fuel cylinder 12.Boost valve 141 and control module 11
Electrical connection, when pressure sensitive device 13 detects the pressure of fuel cylinder 12 lower than preset minimum pressure limit value, control module
11, which control boost valve 141 according to the testing result of pressure sensitive device 13, opens, and the liquid in fuel cylinder 12 passes through pressure inlet
Road 191 enters in pressurizing pack 15, and pressurizing pack 15 gasifies to liquid, and pressurized gas turns again to fuel cylinder 12
In, increase the pressure of fuel cylinder 12 as a result,.When pressure sensitive device 13 detects that the pressure of fuel cylinder reaches normal pressure value
When, control module 11 controls boost valve 141 and closes, and stablizes pressure in fuel cylinder 12 in normal range of pressure values.
Liquid valve door 142 is connected to by liquid outlet pipe 192 with fuel cylinder 12, and the liquid valve door 142 and control module 11
Electrical connection.Wherein, liquid outlet pipe 192 is connected to the liquid outlet of fuel cylinder 12.Detecting the whole of LNG fuel air supply system 10
Vehicle device igniting after, control module 11 control liquid valve 142 unlatching, detect LNG fuel air supply system 10 by vehicle
After equipment is flame-out, control module 11 controls liquid valve door 142 and closes.
Pressure relief valve 143 is connected to by relief pipeline 193 with fuel cylinder 12, the pressure release of relief pipeline 193 and fuel cylinder 12
Mouth connection.The pressure relief valve 143 is electrically connected with control module 11, when pressure sensitive device 13 detects that the pressure of fuel cylinder 12 is low
When preset maximum pressure limit value, control module 11 controls pressure relief valve 143 according to the testing result of pressure sensitive device 13
It opens, release is carried out to fuel cylinder 12；When pressure sensitive device 13 detects that the pressure of fuel cylinder 12 reaches normal pressure value,
Control module 11 controls pressure relief valve 143 and closes, and stablizes pressure in fuel cylinder 12 in normal range of pressure values.
LNG fuel air supply system 10 further includes safety valve 16, and safety valve 16 is connected by relief pipeline 193 and fuel gas bottle 12
It is logical.When pressure value is more than preset safe pressure value in relief pipeline 193 or fuel gas bottle, safety valve 16 is under the action of internal pressure
It automatically turns on, discharges the fuel medium of superpressure outward.Because safety valve 16 is automatic starting valve, fail when pressure relief valve 14 occurs
Or when blocking and in particular surroundings such as fire, 16 automatically starting of safety valve discharges medium outward.In this way,
The general safety performance of increase system.
In addition, it should be noted that, safety valve 16 and pressure relief valve 143 are mounted in parallel on relief pipeline 193,
Make the pressure release of safety valve 16 and pressure relief valve 143 energy independent control fuel cylinder 12.
Second embodiment
As shown in Fig. 2, it is the structural schematic diagram of LNG fuel air supply system of the invention in a second embodiment.This reality
LNG fuel air supply system structure, the principle for applying example are similar to the LNG fuel air supply system in first embodiment, and difference is,
LNG fuel air supply system further include out liquid shut-off valve 18 and pressurization shut-off valve 17.Liquid shut-off valve 18 is for manually controlling fuel out
The feed flow of bottle is mounted in the liquid outlet pipe 192 of connection fuel cylinder 12 and liquid valve door 142.It is pressurized shut-off valve 17 and is used for hand
The pressurization of dynamic control fuel cylinder 12, is mounted on the pressure pipeline 193 of connection fuel cylinder 12 and boost valve 17.Liquid is arranged to cut
Only the purpose of valve 18 and pressurization shut-off valve 17 is: only going out liquid shut-off valve 18 and pressurization shut-off valve 17 by after manually opened, control
Molding block 11 just can control fuel cylinder 12 go out liquid and pressurization, therefore, when control module 11 break down or boost valve 141,
When liquid valve door 142 fails, can manual shutoff go out liquid and pressurization, reinforce security performance, in addition, may be selected for client can also be increased
Property.
The course of work of LNG fuel air supply system of the invention is as follows:
After LNG vehicle igniting vehicle is powered, control module 11 is opened the liquid valve door 142 above fuel cylinder 12 and is carried out just
Normal feed flow；
When control module 11 detects insufficient pressure in fuel cylinder 12 by pressure sensitive device 13, boost valve is opened
141, the liquid that fuel cylinder 12 flows out returns in fuel cylinder 12 after being gasified by pressurizing pack 15, when pressure reaches control mould
When the preset normal pressure value of block 11 (i.e. the pressure of 12 demand of fuel cylinder), boost valve 141,12 internal pressure of steady fuel bottle are closed
Power guarantees the supply pressure of fuel cylinder 12；
When the LNG vehicle parking time too long, control module 11 detects 12 pressure of fuel cylinder by pressure sensitive device 13
When excessively high or the case where need to ensuring to carry out safely prerelease (ensuring 12 pressure of fuel cylinder within the scope of safe pressure value), beat
Pressure relief valve 143 is opened to the pressure pressure release in fuel cylinder 12, (is fired when pressure reaches the preset normal pressure value of control module 11
Expect the pressure of 12 demand of bottle) when, pressure relief valve 143 is closed, pressure in steady fuel bottle 12 guarantees the supply pressure of fuel cylinder 12
Power improves security of system；
When pressure relief valve 143 fails or occurs to block and be in the particular surroundings such as vacuum failure, fire, safety valve 16
It will start automatically, outside discharge medium, increase system overall security.
LNG fuel air supply system of the invention is by setting control module, pressure sensitive device and valve member, so that control
Molding root tuber corresponds to opening or closing for valve according to the testing result control valve component of pressure sensitive device, realizes and supplies system
Liquid, pressurization and the automatic control of pressure release, so that the system automation operation realized has more human nature without manually being operated
Change, avoid the maloperation or leakage operation of personnel, also avoid in traditional technology manually-operated gate because cryogenic liquid easily freezes can not
The problem of unlatching, so that the LNG fuel air supply system is more safely, conveniently and stable.
In addition, LNG fuel air supply system of the present invention also adds pressure relief valve, which is controlled by control module
Releasing pressure automatically can be achieved, it is safe and reliable.It avoids and traditionally uses safety valve progress pressure release there are engaging pressure inaccuracy, rises
The problems such as seat, ice are stifled is not returned after jump.
Further, since this LNG fuel air supply system is using automatically controlling, when emergency occurs, control module can be quick
It controls liquid valve door and closes realization emergency cut-off.
LNG vehicle of the invention is safer and more reliable and stable because using above-mentioned LNG fuel air supply system.
The above is only preferable possible embodiments of the invention, not limit the scope of the invention, all with the present invention
The variation of equivalent structure made by specification and accompanying drawing content, is included within the scope of protection of the present invention.
Claims (10)
1. a kind of LNG fuel air supply system characterized by comprising
Control module；
Fuel cylinder, for loading liquified natural gas；
Pressure sensitive device, for detecting the pressure in the fuel cylinder, the pressure sensitive device and control module electricity
Connection, and will test pressure information and be sent to the control module；
Valve member is electrically connected with the control module, the pressure that the control module is detected according to the pressure sensor device
Information controls the valve member and corresponds to opening or closing for valve.
2. LNG fuel air supply system according to claim 1, which is characterized in that the LNG fuel air supply system further includes
Pressurizing pack, the valve member include boost valve, the boost valve by pressure pipeline be connected to the fuel cylinder and
Between the pressurizing pack；
The boost valve is electrically connected with the control module, when the pressure sensitive device detects the pressure of the fuel cylinder
When lower than preset minimum pressure limit value, the control module controls the boost valve and opens, and makes the liquid in the fuel cylinder
Body turns again in the fuel cylinder after carrying out gasification pressurization by the pressurizing pack；When the pressure sensitive device detects
When the pressure of the fuel cylinder reaches normal pressure value, the control module controls the boost valve and closes.
3. LNG fuel air supply system according to claim 2, which is characterized in that the valve member further includes liquid valve
Door and pressure relief valve, the liquid valve door are connected to by liquid outlet pipe with the fuel cylinder, and the pressure relief valve passes through relief tube
Road is connected to the fuel cylinder；
The liquid valve door is electrically connected with the control module, when the LNG fuel air supply system by air feed equipment after igniting,
The control module controls the liquid valve door and opens, described when the LNG fuel air supply system by air feed equipment after being stopped working
Control module controls the liquid valve door and closes；
The pressure relief valve is electrically connected with the control module, when the pressure sensitive device detects the pressure of the fuel cylinder
When higher than preset maximum pressure limit value, the control module controls the pressure relief valve and opens, and carries out release to fuel cylinder, when
When the pressure sensitive device detects that the pressure of the fuel cylinder reaches normal pressure value, unloaded described in the control module control
Pressure valve is closed.
4. LNG fuel air supply system according to claim 3, which is characterized in that the boost valve, liquid valve door and institute
Stating pressure relief valve is small-sized low temperature resistant automatic valve.
5. LNG fuel air supply system according to claim 4, which is characterized in that the boost valve, the liquid valve door
It is -200 DEG C~-190 DEG C with the low temperature resistant temperature of the pressure relief valve；
The boost valve, the liquid valve door and the pressure relief valve are equal are as follows: electrically-controlled valve, solenoid valve or motor-driven valve.
6. LNG fuel air supply system according to claim 3, which is characterized in that the LNG fuel air supply system further includes
Safety valve, the safety valve and the pressure relief valve are mounted in parallel on the relief pipeline, so that the safety
The pressure release of fuel cylinder described in valve and the pressure relief valve energy independent control；When pressure in the relief pipeline or the fuel gas bottle
When value is more than preset safe pressure value, the safety valve is automatically turned on, to the fuel medium of outlet superpressure.
7. LNG fuel air supply system according to claim 3, which is characterized in that the LNG fuel air supply system further includes
Liquid shut-off valve out, the liquid shut-off valve out is mounted in the liquid outlet pipe for being connected to the fuel cylinder and the liquid valve door, described
Liquid shut-off valve is used to manually control the feed flow of the fuel cylinder out.
8. LNG fuel air supply system according to claim 2, which is characterized in that the LNG fuel air supply system further includes
It is pressurized shut-off valve, the pressurization shut-off valve is mounted on the pressure pipeline for being connected to the fuel cylinder and the boost valve, described
Pressurization shut-off valve is used to manually control the pressurization of the fuel cylinder.
9. LNG fuel air supply system according to claim 1, which is characterized in that the control module include controller with
And the communication unit being electrically connected with the controller, the communication unit mode and long-range control and monitor console communication link by wireless communication
It connects.
10. a kind of LNG vehicle, which is characterized in that any including vehicle body, engine, running gear and such as claim 1 to 9
LNG fuel air supply system described in, the LNG fuel air supply system provide power for the engine, and the engine drives
Move the running gear walking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711214961.2A CN109838689A (en) | 2017-11-28 | 2017-11-28 | LNG fuel air supply system and LNG vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711214961.2A CN109838689A (en) | 2017-11-28 | 2017-11-28 | LNG fuel air supply system and LNG vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109838689A true CN109838689A (en) | 2019-06-04 |
Family
ID=66880884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711214961.2A Pending CN109838689A (en) | 2017-11-28 | 2017-11-28 | LNG fuel air supply system and LNG vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109838689A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111952033A (en) * | 2020-08-20 | 2020-11-17 | 合肥中科离子医学技术装备有限公司 | Gas discharge system for superconducting magnet system |
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| CN111952033A (en) * | 2020-08-20 | 2020-11-17 | 合肥中科离子医学技术装备有限公司 | Gas discharge system for superconducting magnet system |
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