CN205606171U - Automobile -used LNG initiative turbocharging system - Google Patents
Automobile -used LNG initiative turbocharging system Download PDFInfo
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- CN205606171U CN205606171U CN201620359343.1U CN201620359343U CN205606171U CN 205606171 U CN205606171 U CN 205606171U CN 201620359343 U CN201620359343 U CN 201620359343U CN 205606171 U CN205606171 U CN 205606171U
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Abstract
The utility model relates to an automobile -used LNG initiative turbocharging system, including hydraulic drive device, air feeder and controller, air feeder includes low temperature plunger pump, liquid storage pot, vaporizer and buffer tank, and the vaporizer input port adopts the natural gas pipe way to be connected with low temperature plunger pump delivery outlet, and the vaporizer delivery outlet adopts natural gas pipe way and buffer tank input port connection, and the buffer tank delivery outlet adopts the natural gas pipe way to be connected with the engine, the hydraulic drive device includes hydraulic pump, hydraulic tank and hydraulic drive valve piece, and hydraulic tank adopts hydraulic tubing and hydraulic drive valve piece and hydraulic pump connection, and hydraulic drive valve piece adopts the fluid pressure line to be connected with the low temperature plunger pump, and the controller is connected with the vaporizer electricity. The utility model discloses under the prerequisite of having guaranteed the supply air pressure, do not increase the evacuation volume of natural gas steam, reduced vehicle operation's cost, reduced the emission of methane, protected natural environment.
Description
Technical field
This utility model relates to a kind of Vehicular liquefied natural gas supply system, particularly to a kind of automobile-used LNG master
Dynamic supercharge system.
Background technology
Liquefied natural gas is the clean energy resource that the world today generally acknowledges.Its calorific value is high, burning is abundant, price is low, fortune
Defeated economy and safety are good, are popular in users.LNGV with LNG as fuel is
Put into operation.LNG mounted gas cylinder, as the key component of LNGV onboard fuel system, is also subject to
To extensive concern, some research institutions, enterprise, colleges and universities increase the dynamics of research and development.LNG automobile exists
China and the whole world achieve great success, and China suddenly becomes whole world LNG automobile pollution first especially
Country.As clean energy resource LNG more more economical than diesel oil/gasoline car with cleaning.
LNG need to by tank car by mother station or natural gas liquefaction plant to the dispensing transhipment of LNG liquid addition station.LNG exists
Pressure in transport vehicle is the lowest, and such low-pressure is conducive to storage and the transport of LNG.But for ensureing vapour
Car engine can be properly functioning, and LNG pressure can not be too low.
Existing way is to carry out LNG at LNG liquid addition station adjusting operated in saturation, and uses the vehicle-mounted storage of LNG
Tank ensures the normal supply of electromotor from supercharging technology.But either which kind of way, both increases vehicle-mounted LNG
The pressure of storage tank, and then add the emptying amount of storage tank, and also receive industry from the safety of pressure charging system
Interior extensive query.
For reducing pressure of storage tank, the part of LNG gasification is discharged directly into air by firsts and seconds exhaust-valve.
It is worthless from the angle of protection environment, analyzes display according to GWP (chamber effect potential value), divide with unit
For subnumber, the greenhouse effect of methane is 25 times of carbon dioxide, and therefore we should avoid natural gas as far as possible
Discharge.From the perspective of economy, natural gas is entered air in vain, considerably increases gas consumption,
Adding cost of transportation, we also should avoid as far as possible.LNG station is that motor vehicle reservoir carries out adjusting operated in saturation also
Add the operation cost of LNG, need to avoid as far as possible.
Either adjust saturated or from supercharging, all can not supply by the real-time requirement of electromotor, thus can not
Ensure the even running of electromotor.It is thus desirable to a kind of can be not increasing in vehicle-mounted LNG storage tank before pressure
Put, it is possible to carry out the system actively supplied according to the demand of electromotor.Thus ensure in the situation reducing emptying
Under, it is ensured that the supply gas pressure to electromotor, it is ensured that the even running of electromotor.
Utility model content
Mesh of the present utility model be to overcome above-mentioned tradition LNG automobile storage deficiency, it is provided that a kind of automobile-used
LNG active boost air supply system and air supply method, it is possible to the premise of pressure in not increasing vehicle-mounted LNG storage tank
Under, it is possible to carry out the system actively supplied according to the demand of electromotor, thus ensure in the case of reducing emptying,
Ensure the supply gas pressure to electromotor and air demand, it is ensured that the even running of electromotor.
For the attainment of one's purpose, the technical scheme that this utility model provides is:
The one automobile-used LNG active boost system that this utility model relates to includes fluid pressure drive device, supply dress
Putting and controller, described feeder includes low temperature plunger displacement pump, fluid reservoir, gasifier and surge tank, liquid storage
Being provided with LNG liquid level sensor in tank, low temperature plunger displacement pump is arranged in fluid reservoir, is provided with gas temperature in gasifier
Degree sensor and gas pressure sensor, gasifier input port uses gas pipeline and low temperature plunger displacement pump delivery outlet
Connecting, gasifier delivery outlet uses gas pipeline to be connected with surge tank input port, and surge tank delivery outlet uses sky
So air pipe is connected with electromotor, and the natural gas line between described surge tank and electromotor is additionally provided with supply
Valve；Described fluid pressure drive device includes hydraulic pump, hydraulic oil container and hydraulic-driven valve block, and hydraulic oil container is adopted
Being connected with hydraulic-driven valve block and hydraulic pump with conduit under fluid pressure, hydraulic-driven valve block uses fluid pressure line and cryogenic columns
Plug pump connects；Described controller respectively with LNG liquid level sensor, gas temperature sensor, gas pressure
Sensor and air-supplying valve electrical connection.
The one automobile-used LNG active boost system that this utility model relates to passes through controller monitor engines in real time
The predictive value of natural gas consumption of real-time Natural gas consumption and prediction electromotor next one action, and with above-mentioned
Two values calculate final air demand and supply gas pressure, and controller is in this gas consumption and pressure and surge tank
Quality of natural gas compares with pressure, is made whether to carry out the decision of blower operations.
As preferably, described fluid reservoir is additionally provided with steam (vapor) outlet, and steam (vapor) outlet uses natural gas steam Guan Yuqi
Changing device input port to connect, natural gas steam pipe connects one end of fluid reservoir and extends to the steam sky within fluid reservoir
Between, when in LNG storage tank, steam pressure raises, natural gas steam is supplied to electromotor by this pipeline.
As preferably, between described hydraulic-driven valve block and hydraulic oil container, it is additionally provided with hydraulic pressure bypass valve block, hydraulic pressure
Bypass valve block uses fluid pressure line to be connected with hydraulic-driven valve block, hydraulic pump and hydraulic oil container respectively.
As preferably, in described surge tank, it is additionally provided with gas pressure relief valve.Gas pressure relief valve can be at gas
Body loop automatically opens up during hypertonia, thus reduces the pressure in loop, protect security of system.
As preferably, in described hydraulic-driven valve block, it is additionally provided with hydraulic pressure relief valve.Hydraulic pressure relief valve
Automatically opening up when can produce excess pressure in hydraulic circuit, thus reduce the pressure in loop, protection hydraulic pressure returns
The safety on road.
As preferably, described gasifier is additionally provided with cooling water inlet and coolant outlet.
The technical scheme using this utility model to provide, compared with prior art, has the advantages that
This utility model fluid reservoir can provide supply gas pressure and the quality of filling gas that can meet engine demand, and
Keep the temperature in fluid reservoir and tank pressure not to raise, thus on the premise of ensure that supply gas pressure, do not increase
The emptying amount of natural gas steam, reduces the cost that vehicle runs, reduces the discharge of methane, protect nature
Environment.
Accompanying drawing explanation
Fig. 1 is this utility model automobile-used LNG active boost system structure schematic diagram；
Fig. 2 is this utility model natural gas cylinder structural representation；
Fig. 3 is this utility model automobile-used LNG active boost system active boost method flow schematic diagram.
Mark explanation in schematic diagram: 1, low temperature plunger displacement pump；2, fluid reservoir；3, gasifier；4, surge tank；
5, controller；6, hydraulic-driven valve block；7, hydraulic pressure bypass valve block；8, hydraulic oil container；9, hydraulic pump；
10, gas pipeline；11, natural gas steam pipe；12, fluid pressure line；13, electromotor；14, steam supply valve
Door.
Detailed description of the invention
For further appreciating that content of the present utility model, in conjunction with the accompanying drawings and embodiments this utility model is retouched in detail
State.
In conjunction with Fig. 1, the one automobile-used LNG active boost system of the present embodiment includes fluid pressure drive device, confession
Device of air and controller 5.Described fluid pressure drive device includes hydraulic pump 9, hydraulic oil container 8, hydraulic-driven
Valve block 6 and hydraulic pressure bypass valve block 7, hydraulic pump 9, hydraulic oil container 8, hydraulic-driven valve block 6 and hydraulic pressure bypass
Valve block 7 is connected with low temperature plunger displacement pump 1 by fluid pressure line 12, formation closed-loop flow circuit, is used for driving low
Temperature plunger displacement pump 1 moves repeatedly, provides power to liquified natural gas conveying, and this hydraulic pump can be by electromotor PTO
Power taking mouth is driven, and also can be driven by motor.
Described feeder includes low temperature plunger displacement pump 1, fluid reservoir 2, gasifier 3 and surge tank 4, low temperature
Plunger displacement pump 1 is arranged in fluid reservoir 2, and this low temperature plunger displacement pump 1 is provided with LNG leakage fluid dram, fluid reservoir 2
Being provided with steam (vapor) outlet, LNG leakage fluid dram is connected with gasifier 3, by liquid natural by gas pipeline 10
Gas is transported in gasifier 3, and the steam (vapor) outlet on fluid reservoir 2 is by natural gas steam pipe 11 and gasifier 3
Connect, steam methane can be transported in gasifier 3, in this fluid reservoir 2, be additionally provided with LNG liquid level sensor,
For gathering LNG liquid level information.Gas pressure sensor and gas temperature sensor are installed in gasifier 3,
Sensor electrically connects with controller 5, is used for gathering gaseous natural gas pressure and gaseous state natural gas temperature, and to pressure
Force value and temperature value are analyzed, it may be judged whether need to supply electromotor；It is additionally provided with cold on gasifier 3
But water inlet and coolant outlet, is used for controlling gasifier 3 own temperature.The delivery outlet of gasifier 3 uses sky
So air pipe 10 connects a surge tank 4, is provided with atmospheric pressure relief valve, supplies gently in surge tank 4
Pressure oscillation, provide the combustion gas of smooth pressure, surge tank 4 delivery outlet to pass through natural gas tube to electromotor 13
Road 10 connects electromotor 13, and the gas pipeline 10 between surge tank 4 and electromotor 13 is also provided with one
Individual air-supplying valve 14, this air-supplying valve 14 connects controller 5, controller 5 controls its gas flow.
A kind of automobile-used LNG active boost system of the present utility model includes the air supply method bag of fluid pressure drive device
Include following steps:
Step one: engine key powers on, then starts system；
Step 2: system enters self diagnosis state, system enters self diagnosis state and includes that diagnosing controller itself is
No normally whether controller interrupts with electromotor communication, and gas pressure sensor is the most normal, and gas temperature passes
Sensor is the most normal, and hydraulic pressure sensor is the most normal, and gas temperature is the most too low, and whether engine water temperature
Too low, the communication with liquid level sensor is the most normal.If system can not enter normal operating conditions, then enter step
Rapid 3, if normal operating conditions can be entered, then enter step 4；
Step 3: system stalls, starts to report an error；
Step 4: judge whether system can meet the real-time requirement of electromotor for the pressure that electromotor provides, if
Can not meet, then enter step 5, if can meet, then return step 2；
Step 5: fluid pressure drive device runs and drives low temperature plunger displacement pump, and low temperature plunger displacement pump pressurizes in storage tank
Output natural gas, natural gas carries out isobaric expansion in gasifier, thus obtains the natural gas of elevated pressures, high
After pressure natural gas enters surge tank, the active to electromotor supplies；
Step 6: judge whether electromotor shuts down, if not shutting down, returns step 4, if shutting down, stop be
System.
Schematically being described this utility model and embodiment thereof above, this description does not has restricted,
Shown in accompanying drawing is also one of embodiment of the present utility model, and actual structure is not limited thereto.Institute
Enlightened by it with those of ordinary skill in the art, in the case of creating objective without departing from this utility model, no
Design the frame mode similar to this technical scheme and embodiment through creative, this utility model all should be belonged to
Protection domain.
Claims (6)
1. an automobile-used LNG active boost system, it is characterised in that: it includes fluid pressure drive device, supply
Device and controller, described feeder includes low temperature plunger displacement pump, fluid reservoir, gasifier and surge tank, storage
Being provided with LNG liquid level sensor in flow container, low temperature plunger displacement pump is arranged in fluid reservoir, is provided with gas in gasifier
Temperature sensor and gas pressure sensor, gasifier input port uses gas pipeline to export with low temperature plunger displacement pump
Mouth connects, and gasifier delivery outlet uses gas pipeline to be connected with surge tank input port, and surge tank delivery outlet uses
Gas pipeline is connected with electromotor, and the natural gas line between described surge tank and electromotor is additionally provided with confession
Air valve；Described fluid pressure drive device includes hydraulic pump, hydraulic oil container and hydraulic-driven valve block, hydraulic oil container
Using conduit under fluid pressure to be connected with hydraulic-driven valve block and hydraulic pump, hydraulic-driven valve block uses fluid pressure line and low temperature
Plunger displacement pump connects；Described controller respectively with LNG liquid level sensor, gas temperature sensor, gas pressure
Force transducer and the electrical connection of gas pressure relief valve.
One the most according to claim 1 automobile-used LNG active boost system, it is characterised in that: described
Fluid reservoir be additionally provided with steam (vapor) outlet, steam (vapor) outlet uses natural gas steam pipe to be connected with gasifier input port, sky
So one end of gas steam pipe connection fluid reservoir extends to the vapor space within fluid reservoir.
One the most according to claim 1 automobile-used LNG active boost system, it is characterised in that: described
Hydraulic-driven valve block and hydraulic oil container between be additionally provided with hydraulic pressure bypass valve block, hydraulic pressure bypass valve block uses hydraulic tube
Road is connected with hydraulic-driven valve block, hydraulic pump and hydraulic oil container respectively.
One the most according to claim 1 automobile-used LNG active boost system, it is characterised in that: described
Surge tank in be additionally provided with gas pressure relief valve.
One the most according to claim 1 automobile-used LNG active boost system, it is characterised in that: described
Hydraulic-driven valve block in be additionally provided with hydraulic pressure relief valve.
One the most according to claim 1 automobile-used LNG active boost system, it is characterised in that: described
Gasifier on be additionally provided with cooling water inlet and coolant outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620359343.1U CN205606171U (en) | 2016-04-26 | 2016-04-26 | Automobile -used LNG initiative turbocharging system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620359343.1U CN205606171U (en) | 2016-04-26 | 2016-04-26 | Automobile -used LNG initiative turbocharging system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205606171U true CN205606171U (en) | 2016-09-28 |
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ID=56971071
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620359343.1U Active CN205606171U (en) | 2016-04-26 | 2016-04-26 | Automobile -used LNG initiative turbocharging system |
Country Status (1)
| Country | Link |
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| CN (1) | CN205606171U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105757449A (en) * | 2016-04-26 | 2016-07-13 | 杭州西港低温技术有限公司 | Vehicle LNG active pressurization system and gas supply method thereof |
| CN113719381A (en) * | 2021-07-21 | 2021-11-30 | 一汽解放汽车有限公司 | Fuel supply system and automobile |
-
2016
- 2016-04-26 CN CN201620359343.1U patent/CN205606171U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105757449A (en) * | 2016-04-26 | 2016-07-13 | 杭州西港低温技术有限公司 | Vehicle LNG active pressurization system and gas supply method thereof |
| CN105757449B (en) * | 2016-04-26 | 2018-11-02 | 杭州西港低温技术有限公司 | A kind of automobile-used LNG active boosts system and its air supply method |
| CN113719381A (en) * | 2021-07-21 | 2021-11-30 | 一汽解放汽车有限公司 | Fuel supply system and automobile |
| CN113719381B (en) * | 2021-07-21 | 2022-12-13 | 一汽解放汽车有限公司 | Fuel supply system and automobile |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |