CN110005591A - A kind of cryogenic pump system - Google Patents
A kind of cryogenic pump system Download PDFInfo
- Publication number
- CN110005591A CN110005591A CN201910281020.3A CN201910281020A CN110005591A CN 110005591 A CN110005591 A CN 110005591A CN 201910281020 A CN201910281020 A CN 201910281020A CN 110005591 A CN110005591 A CN 110005591A
- Authority
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- China
- Prior art keywords
- pump
- cryogenic
- valve
- cold end
- driving end
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000002828 fuel tank Substances 0.000 claims abstract description 20
- 239000000872 buffer Substances 0.000 claims abstract description 18
- 239000003949 liquefied natural gas Substances 0.000 abstract description 28
- 238000002485 combustion reaction Methods 0.000 abstract description 11
- 239000007789 gas Substances 0.000 abstract description 11
- 238000005086 pumping Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 46
- 239000003345 natural gas Substances 0.000 description 23
- 230000004048 modification Effects 0.000 description 10
- 238000012986 modification Methods 0.000 description 10
- 230000009471 action Effects 0.000 description 8
- 239000000446 fuel Substances 0.000 description 7
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 239000000543 intermediate Substances 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 239000002283 diesel fuel Substances 0.000 description 3
- 238000002309 gasification Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 230000002045 lasting effect Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000001914 calming effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0203—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels characterised by the type of gaseous fuel
- F02M21/0215—Mixtures of gaseous fuels; Natural gas; Biogas; Mine gas; Landfill gas
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
- F02M21/0221—Fuel storage reservoirs, e.g. cryogenic tanks
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
- F02M21/0245—High pressure fuel supply systems; Rails; Pumps; Arrangement of valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B37/00—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00
- F04B37/06—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for evacuating by thermal means
- F04B37/08—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for evacuating by thermal means by condensing or freezing, e.g. cryogenic pumps
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Combustion & Propulsion (AREA)
- Fuel-Injection Apparatus (AREA)
- Reciprocating Pumps (AREA)
Abstract
The invention belongs to internal combustion engines to supply technical field, and in particular to a kind of cryogenic pump system.The cryogenic pump system, including cryogenic tank, pump cold end, high-pressure pump and pump driving end, the pump cold end is connected to cryogenic tank, and gasifier is equipped between buffer and pump cold end, is equipped with shut-off valve between gasifier and pump cold end, booster is equipped between the buffer and cryogenic tank, cold end and pump driving end are pumped by connection axis connection, pump driving end is connected to fuel tank, and high-pressure pump is connected to by diesel common rail with pump driving end, the buffer is connected to by gas rail with injector, and connectivity part is equipped with balanced valve.The beneficial effect is that: increase the course continuation mileage of vehicle；Additional hydraulic power driving is not needed, structure is simple and effective, and complete machine is facilitated to arrange；The pumping of liquefied natural gas can be achieved in piston in reciprocatory movement, and work efficiency is high.
Description
Technical field
The invention belongs to internal combustion engines to supply technical field, and in particular to a kind of cryogenic pump system.
Background technique
On Vehicles Collected from Market, using natural gas as in the internal-combustion engine vehicle of fuel, carrying mode of the natural gas on vehicle
It is divided into two kinds of compressed natural gas (CNG) and liquefied natural gas (LNG).Compressed natural gas (CNG) is the natural gas of high-pressure gaseous, is led to
The compressed natural gas of a normal volume is converted into the natural gas of 200 normal volumes.Liquefied natural gas (LNG) is the natural of liquid
The compressed natural gas of gas, a usual volume is converted into the natural gas of 600 normal volumes.The lasting driveability of CNG vehicle is not
Foot is suitble to the small vehicles such as taxi to use.Opposite CNG vehicle, the lasting driveability of LNG vehicle greatly increases, medium and heavy
Lorry also has enough spaces to store equipment.
In current most of LNG vehicle, the liquefied natural gas in cryogenic tank is the gravity by itself from low
It is flowed out in warm tank, internal combustion engine is led to after gasifier gasification and carries out work by combustion.Liquefied natural gas in cryogenic tank makes
After using certain degree, remaining less liquefied natural gas (about 25% or so) can not smoothly be flowed out low by self gravity
Warm tank, being only replenished in time after enough liquefied natural gas can just continue to use, this not only affects the lasting traveling energy of vehicle
Power also creates the waste of memory space, increases additional burden for vehicle.
A kind of in-cylinder direct-jet technology of achievable dual fuel injection can effectively improve burning by the way of compression ignition
Efficiency.The double fuel direct injection technology first sprays a small amount of diesel oil in the combustion chamber, after compression ignition, is promoted in combustion in IC engine room
Temperature, ignite the compressed natural gas then sprayed, carries out work by combustion.The technology, can by efficiency of combustion promoted to 42% with
On, and PM value and the discharge of NOx can be largely reduced, and more to clean, more economical fuel injection system for IC engine.The double fuel
Spraying system at work, needs the high-pressure natural gas stable using pressure.The liquid flowed out from cryogenic tank by self gravity
Change natural gas, the pressure of the compressed natural gas after gasifier gasification is smaller, can not be bi-fuel internal combustion engine timing, quantitative
High-pressure natural gas is provided.
In conclusion need to develop a kind of completely new, perfect cryogenic pump system, can timing, it is quantitative will be in cryogenic tank
Liquefied natural gas pump out, with timing, it is quantitative to internal combustion engine conveying high-pressure natural gas, meet the need of market and social development
It asks.
Summary of the invention
In order to compensate for the shortcomings of the prior art, the present invention provides the cryogenic pump systems that a kind of structure is simple, and work efficiency is high
System.
The present invention is achieved through the following technical solutions:
A kind of cryogenic pump system, including cryogenic tank, pump cold end, high-pressure pump and pump driving end, the pump cold end are connected to cryogenic tank,
It is equipped with gasifier between buffer and pump cold end, is equipped with shut-off valve, the buffer and cryogenic tank between gasifier and pump cold end
Between be equipped with booster, pump cold end and pump driving end by connection axis connection, pump driving end be connected to fuel tank, high-pressure pump passes through bavin
Oily common rail is connected to pump driving end, and the buffer is connected to by gas rail with injector, and connectivity part is equipped with balanced valve.
Further, it is equipped with intermediate between the buffer and booster, it is single that first is equipped between booster and cryogenic tank
To valve.
Further, the pump cold end include the first valve body, the cold end pump housing and cold end piston, cryogenic tank by the first valve body with
The cold end piston of the connection of the cold end pump housing, the cold end pump housing is connect by connecting shaft with pump driving end, and check valve is equipped in the first valve body
Piece is equipped with third check valve between the cold end pump housing and shut-off valve, second one-way valve is equipped between booster and third check valve.
Further, pump driving end includes the driving end pump housing and two-position three-way valve, and driving end pumps intracorporal driving piston
With connect axis connection, the driving end pump housing is connected to by two-position three-way valve with diesel common rail and fuel tank.
Further, two-position three-way valve there are two being set in pump driving end in the cryogenic pump system modification structures.
Further, pump driving end includes driving the end pump housing and two position four-way valves in the cryogenic pump system modification structures, and two
The first access connection diesel common rail pipeline of position four-way valve and the 4th cavity pipeline, alternate path connect third cavity pipeline and oil
Case pipeline, when two position four-way valves power off, the first access connects the 4th cavity pipeline and fuel tank pipeline, and it is total that alternate path connects diesel oil
Rail pipeline and third cavity pipeline.
Further, the cryogenic tank is equipped with vent valve.
The beneficial effects of the present invention are: the liquefied natural gas in cryogenic tank can all be pumped out, the continuous of vehicle is increased
Navigate mileage；The source of hydraulic power drive is diesel common rail system, does not need additional hydraulic power driving, and structure is simple and effective,
Complete machine is facilitated to arrange；It is provided with supercharger structure by the branch of compressed natural gas, the pressure in cryogenic tank is balanced, without additional
Pressure charging system is designed for cryogenic tank, the pumping of liquefied natural gas can be achieved in piston in reciprocatory movement, and work efficiency is high.
Detailed description of the invention
The present invention will be further described below with reference to the drawings.
Attached drawing 1 is cryogenic pump system layout；
Attached drawing 2 is cryogenic pump system modification structures layout；
Attached drawing 3 is the schematic diagram that cryogenic pump system uses two position four-way valves.
In figure, 001 pump cold end, 002 pump driving end, 1 cryogenic tank, 2 check valve sheets, the 3 cold end pump housings, the work of 4 cold ends
Plug, 5 connecting shafts, 6 reset springs, the 7 driving end pump housings, 8 driving pistons, 9 two-position three-way valves, 10 fuel tanks, 11 diesel oil are total
Rail, 12 high-pressure pumps, 13 vent valves, 14 first check valves, 15 second one-way valves, 16 third check valves, 17 boosters, 18
Shut-off valve, 19 intermediates, 20 gasifiers, 21 balanced valves, 22 buffers, 23 gas rails, 24 injectors, 25 first cavities,
26 second cavities, 27 third cavities, 28 the 4th cavities, 29 second one-way valve pieces, 30 the 4th check valves, 31 second valves
Body, 32 second two-position three-way valves, 33 first arrows, 34 second arrows, 35 third arrows, 36 the 4th arrows, 37 the 5th
Arrow, 38 the 6th arrows, 39 first valve bodies, 40 liang of position four-way valves, 41 first accesses, 42 alternate paths.
Specific embodiment
Attached drawing 1-3 is a kind of specific embodiment of the invention.A kind of cryogenic pump system of the invention, including cryogenic tank 1, pump are cold
End 001, high-pressure pump 12 and pump driving end 002, the pump cold end 001 is connected to cryogenic tank 1, buffer 22 with pump cold end 001 it
Between be equipped with gasifier 20, gasifier 20 and pump cold end 001 between be equipped with shut-off valve 18, between the buffer 22 and cryogenic tank 1
Equipped with booster 17, pumps cold end 001 and connect with pump driving end 002 by connecting shaft 5, pump driving end 002 is connected to fuel tank 10, high
Press pump 12 is connected to by diesel common rail 11 with pump driving end 002, and the buffer 22 is connected to by gas rail 23 with injector 24,
Connectivity part is equipped with balanced valve 21.
Further, it is equipped with intermediate 19 between the buffer 22 and booster 17, is set between booster 17 and cryogenic tank 1
There is the first check valve 14.
Further, the pump cold end 001 includes the first valve body 39, the cold end pump housing 3 and cold end piston 4, and cryogenic tank 1 passes through the
One valve body 39 is connect with the cold end pump housing 3, and the cold end piston 4 of the cold end pump housing 3 is connect by connecting shaft 5 with pump driving end 002, and first
It is equipped with check valve sheet 2 in valve body 39, third check valve 16, booster 17 and third are equipped between the cold end pump housing 3 and shut-off valve 18
Second one-way valve 15 is equipped between check valve 16.
Further, pump driving end 002 includes the driving end pump housing 7 and two-position three-way valve 9, drives the drive in the end pump housing 7
Piston 8 is connect with connecting shaft 5, and the driving end pump housing 7 is connected to by two-position three-way valve 9 with diesel common rail 11 and fuel tank 10.
Further, two-position three-way valve 9 there are two being set in pump driving end 002 in the cryogenic pump system modification structures.
Further, pump driving end 002 includes the driving end pump housing 7 and two position four-way valves in the cryogenic pump system modification structures
40, the first access 41 connection 11 pipeline of diesel common rail and 28 pipeline of the 4th cavity of two position four-way valves 40, alternate path 42 connect
27 pipeline of third cavity and 10 pipeline of fuel tank, when two position four-way valves 40 power off, the first access 41 connect 28 pipeline of the 4th cavity with
10 pipeline of fuel tank, alternate path 42 connect 11 pipeline of diesel common rail and 27 pipeline of third cavity.
Further, the cryogenic tank 1 is equipped with vent valve 13.
A kind of cryogenic pump system of the invention, cold end piston 4 can move back and forth under the action of connecting shaft 5.Unidirectionally
Valve block 2 can move back and forth in the first valve body 39.In two-position three-way valve 9, when energization, diesel common rail 11 and the 4th cavity 28 are managed
Road is connected, and the high pressure oil in diesel common rail 11 leads to the 4th cavity 28, drives piston 8 under action of hydraulic force to the 5th arrow 37
Direction movement.When two-position three-way valve 9 powers off, the 4th cavity 28 is connected with 10 pipeline of fuel tank, the high-pressure oil flow in the 4th cavity 28
To fuel tank 10, piston 8 is driven to move under the effect of reset spring 6 to 38 direction of the 6th arrow.
It pumps and shut-off valve 18 is set between cold end 001 and gasifier 20, booster is set between buffer 22 and cryogenic tank 1
17, the high-pressure natural gas in buffer 22 to booster 17 when flowing, by intermediate 19, conversion for low pressure natural gas,
First check valve 14 is set between booster 17 and cryogenic tank 1, vent valve 13 is set in cryogenic tank 1, pressure is more than in cryogenic tank 1
When setting value, high pressure gas is discharged from vent valve 13, and it is unidirectional that second is arranged between 17 front end of third check valve 16 and booster
Valve 15, after the liquefied natural gas in the first cavity 25 is gasified by part, when pressure is more than setting value, gaseous natural gas passes through third
Check valve 16 flows to second one-way valve 15, realizes that the natural gas of gasification is discharged from the cold end pump housing 3.
Shown in referring to Fig.1, when two-position three-way valve 9 powers off, 28 pipeline of the 4th cavity of the end pump housing 7 and fuel tank 10 is driven to manage
Road is connected, smaller to the hydraulic coupling of the driving generation of piston 8 in the 4th cavity 28, drives piston 8 under the action of reset spring 6,
It is moved to 38 direction of the 6th arrow, meanwhile, connecting shaft 5 drives cold end piston 4 to move to 38 direction of the 6th arrow, the first cavity 25
Interior generation negative pressure, check valve sheet 2 move under the action of hydraulic coupling to 33 direction of the first arrow in cryogenic tank 1, and check valve sheet 2 is close
The sealing surface of cover and the first valve body 39 is detached from, and the liquefied natural gas in cryogenic tank 1 flows into the by the hole in check valve sheet 2
In one cavity 25, the first cavity 25 carries out liquefied natural gas supplement.
Shown in referring to Fig.1, when two-position three-way valve 9 is powered, 28 pipeline of the 4th cavity and 11 pipeline of diesel common rail are connected, high
Pressure oil flows into the 4th cavity 28, drives piston 8 by action of hydraulic force, overcomes spring force, move to 37 direction of the 5th arrow, together
When, connecting shaft 5 drives cold end piston 3 to move to 37 direction of the 5th arrow, and the liquefied natural gas pressure in the first cavity 25 is gradually
It increases.Check valve sheet 2 is acted on by liquefied natural gas pressure in the first cavity 25, is moved to 33 opposite direction of the first arrow, check valve
Sealing surface and the first valve body 39 on piece 2 seal face contact, and liquefied natural gas in the first cavity 25 is blocked to flow to cryogenic tank 1, when
When pressure reaches setting value in first cavity 25, third check valve 16 is opened, and high-pressure liquefaction natural gas flows to gasifier 20, through gas
After change, buffer 22, balanced valve 21, gas rail 23 are flowed to, to provide stable compression for 24 timing of injector, metered injection
Gas fuel.When two-position three-way valve 9 powers off, cryogenic pump 1 repeats the movement when power-off of above-mentioned two-position three-way valve 9.
When pressure in cryogenic tank 1 is relatively low, the first check valve 14 is opened, and the compressed natural gas in booster 17 is to low temperature
It is supplemented in tank 1, when the pressure in cryogenic tank 1 is higher, the first check valve 14 is closed, and when being more than setting value, vent valve 13 is opened, high
Body of calming the anger is discharged from cryogenic tank 1, to maintain in cryogenic tank 1 pressure in the range of setting.
When pumping the work of cold end 001, partial liquefaction natural gas can be gasified, and generate biggish pressure, when being more than setting value,
Third check valve 16 is opened, and high pressure gas flows to low pressure line by second one-way valve 15.
The present invention relates to cryogenic pump system in, there is also a kind of modification structures, and piston may be implemented and moving back and forth
When, both direction carries out the supply of liquefied natural gas, and referring in modification structures shown in Fig. 2, the second valve body 31, second is arranged
Check valve sheet 29, the second two-position three-way valve 32, the 4th check valve 30 are powered in modification structures in two-position three-way valve 9, and second
When two-position three-way valve 32 powers off, 28 pipeline of the 4th cavity and 11 pipeline of diesel common rail are connected, 27 pipeline of third cavity and fuel tank 10
Pipeline is connected, and is driven piston 8 under action of hydraulic force, is moved to 37 direction of the 5th arrow, under the action of connecting shaft 5, cold end
Piston 4 is moved to 37 direction of the 5th arrow, and the liquefied natural gas in the first cavity 25 is compressed, and check valve sheet 2 is closed, third list
It is opened to valve 16, liquefied natural gas is pumped in gasifier 20, and the volume in the second cavity 26 increases, and hydraulic coupling reduces, and second
Second one-way valve piece 29 in valve body 31 is moved to 36 direction of the 4th arrow, and the liquefied natural gas in cryogenic tank 1, which flows into second, to be held
In chamber 26, the supplement of liquefied natural gas in the second cavity 26 is completed.
Referring to shown in Fig. 2, in modification structures, when two-position three-way valve 9 powers off, and the second two-position three-way valve 32 is powered, the
Four cavities, 28 pipeline and 10 pipeline of fuel tank are connected, and 27 pipeline of third cavity and 11 pipeline of diesel common rail are connected, and drive piston 8 in liquid
It under pressure effect, is moved to 38 direction of the 6th arrow, under the action of connecting shaft 5, cold end piston 4 is transported to 38 direction of the 6th arrow
Dynamic, the liquefied natural gas in the second cavity 26 is compressed, and second one-way valve piece 29 is closed, and the 4th check valve 30 is opened, and liquefy day
Right gas is pumped in gasifier 20, and the volume in the first cavity 25 increases, and hydraulic coupling reduces, and check valve sheet 2 is to the first arrow 33
Direction moves, and the liquefied natural gas in cryogenic tank 1 flows into the first cavity 25, completes the benefit of liquefied natural gas in the first cavity 25
It fills.
Referring to shown in Fig. 3, in modification structures, the function of two two-position three-way valves at pump driving end 002 can also be by one
A two position four-way valve 40 is realized, when two position four-way valves 40 are powered, first access 41 of two position four-way valves 40 connects diesel common rail
28 pipeline of 11 pipelines and the 4th cavity, alternate path 42 connect 27 pipeline of third cavity and 10 pipeline of fuel tank.Two position four-way valves 40
When power-off, the first access 41 connects 28 pipeline of the 4th cavity and 10 pipeline of fuel tank, and alternate path 42 connects 11 pipeline of diesel common rail
With 27 pipeline of third cavity.To realize the adjusting of driving 8 both ends hydraulic coupling of piston.
The present invention is not limited to the above-described embodiments, anyone should learn make under the inspiration of the present invention with the present invention
With same or similar technical solution, fall within the scope of protection of the present invention.
Technology not described in detail in the present invention, shape, construction portion are well-known technique.
Claims (7)
1. a kind of cryogenic pump system, including cryogenic tank, pump cold end, high-pressure pump and pump driving end, which is characterized in that the pump cold end
It is connected to cryogenic tank, gasifier is equipped between buffer and pump cold end, shut-off valve is equipped between gasifier and pump cold end, it is described slow
It rushing and is equipped with booster between device and cryogenic tank, by connection axis connection, pump driving end is connected to fuel tank for pump cold end and pump driving end,
High-pressure pump is connected to by diesel common rail with pump driving end, and the buffer is connected to by gas rail with injector, and connectivity part is equipped with
Balanced valve.
2. a kind of cryogenic pump system according to claim 1, it is characterised in that: be equipped between the buffer and booster
Intermediate is equipped with the first check valve between booster and cryogenic tank.
3. a kind of cryogenic pump system according to claim 1, it is characterised in that: the pump cold end includes the first valve body, cold
The pump housing and cold end piston are held, cryogenic tank is connect by the first valve body with the cold end pump housing, and the cold end piston of the cold end pump housing passes through connection
Axis is connect with pump driving end, and check valve sheet is equipped in the first valve body, and third check valve is equipped between the cold end pump housing and shut-off valve, is increased
Second one-way valve is equipped between depressor and third check valve.
4. a kind of cryogenic pump system according to claim 1, it is characterised in that: pump driving end includes the driving end pump housing
And two-position three-way valve, driving end pump intracorporal driving piston and pass through two-position three-way valve and bavin with axis connection, the driving end pump housing is connect
Oily common rail is connected to fuel tank.
5. a kind of cryogenic pump system according to claim 4, it is characterised in that: two there are two being set in pump driving end
Triple valve.
6. a kind of cryogenic pump system according to claim 1, it is characterised in that: pump driving end includes the driving end pump housing
With two position four-way valves, the first access connection diesel common rail pipeline of two position four-way valves and the 4th cavity pipeline, alternate path connection
Third cavity pipeline and fuel tank pipeline, when two position four-way valves power off, the first access connects the 4th cavity pipeline and fuel tank pipeline, the
Two accesses connect diesel common rail pipeline and third cavity pipeline.
7. a kind of cryogenic pump system according to claim 1, it is characterised in that: the cryogenic tank is equipped with vent valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910281020.3A CN110005591B (en) | 2019-04-09 | 2019-04-09 | Cryopump system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910281020.3A CN110005591B (en) | 2019-04-09 | 2019-04-09 | Cryopump system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110005591A true CN110005591A (en) | 2019-07-12 |
| CN110005591B CN110005591B (en) | 2024-07-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910281020.3A Active CN110005591B (en) | 2019-04-09 | 2019-04-09 | Cryopump system |
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|---|---|
| CN (1) | CN110005591B (en) |
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| CN209943033U (en) * | 2019-04-09 | 2020-01-14 | 英嘉动力科技无锡有限公司 | Low-temperature pump system |
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| CN110005591B (en) | 2024-07-30 |
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