CN107905930A - A kind of heavy monoblock pump peculiar to vessel with anti-outer dripping structure - Google Patents
A kind of heavy monoblock pump peculiar to vessel with anti-outer dripping structure Download PDFInfo
- Publication number
- CN107905930A CN107905930A CN201711415986.9A CN201711415986A CN107905930A CN 107905930 A CN107905930 A CN 107905930A CN 201711415986 A CN201711415986 A CN 201711415986A CN 107905930 A CN107905930 A CN 107905930A
- Authority
- CN
- China
- Prior art keywords
- leakage energy
- fuel
- oil return
- pump housing
- plunger
- 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.)
- Pending
Links
- 238000007789 sealing Methods 0.000 claims description 18
- 239000000446 fuel Substances 0.000 claims description 15
- 239000002828 fuel tank Substances 0.000 claims description 3
- 239000003921 oil Substances 0.000 description 64
- 239000000295 fuel oil Substances 0.000 description 10
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Classifications
-
- 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
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/02—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type
-
- 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
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
-
- 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
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
- F02M59/46—Valves
- F02M59/462—Delivery valves
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
A kind of heavy monoblock pump peculiar to vessel with anti-outer dripping structure disclosed by the invention, seat, hold out body component and fuel-displaced valve member under plunger bushing, plunger, fuel-flow control pull rod, plunger spring, plunger spring including the pump housing and in the pump housing, wherein the delivery connection on fuel-displaced valve body is connected by a union nut with high-pressure oil pipe；It offers the first Leakage Energy oil return hole in fuel-displaced valve body, Leakage Energy drainback passage is provided between fuel-displaced valve body and plunger bushing, the second Leakage Energy oil return hole is provided with plunger bushing, a Leakage Energy oil return ring cavity is provided between plunger bushing and the pump housing, the Leakage Energy oil back chamber of 3rd Leakage Energy oil return hole zero back pressure is set in the pump housing, the oil leak between delivery connection and union nut and high-pressure oil pipe on fuel-displaced valve body passes through the first Leakage Energy oil return hole, Leakage Energy drainback passage, second Leakage Energy oil return hole, Leakage Energy oil return ring cavity, 3rd Leakage Energy oil return hole is flow back into the Leakage Energy oil back chamber of zero back pressure.
Description
Technical field
It is more particularly to a kind of to have outside anti-the present invention relates to a kind of high-power, high injection pressure heavy monoblock pump peculiar to vessel
The heavy monoblock pump peculiar to vessel of drain structure.
Background technology
Current high-power monoblock pump (single cylinder nominal power is 215KW, diameter of plunger 22mm) peculiar to vessel, in rated engine speed
500rpm, the jet blower end pressure under excess load operating mode reach 1500Bar, if thus not taking specific anti-outer dripping structure, monomer
High pressure fuel by high-pressure oil pipe and the fuel-displaced valve member connection place in high-power monoblock pump peculiar to vessel and can go out during pump work process
Fuel tap component and plunger bushing faying face are in that attachment bolt occurs in the case of loosening can be toward leaking out, and to the tool of External leakage
The fuel oil for having pressure, which is ejected on the exhaust pipe of engine (it is 300~500 DEG C to start exhaust pipe normal working temperature), to be fired
Burn and even explode, there are great security risk.
The content of the invention
Present invention aim to address fuel oil present in existing high-power, high injection pressure the monoblock pump course of work
Leak out existing security risk, there is provided a kind of heavy monoblock pump peculiar to vessel with anti-outer dripping structure.
In order to achieve the object of the present invention, the technical solution adopted in the present invention is as follows：
A kind of heavy monoblock pump peculiar to vessel with anti-outer dripping structure, including the pump housing and the plunger in the pump housing
Seat, hold out body component and fuel-displaced valve member under set, plunger, fuel-flow control pull rod, plunger spring, plunger spring, wherein it is described go out
Fuel-displaced valve body in fuel tap component is installed on the pump housing and is connected by fastening bolt with the plunger bushing, on the fuel-displaced valve body
Delivery connection be connected by a union nut with high-pressure oil pipe, 60 in the delivery connection ° conical surface linear contact inner collar
It is in sealing contact with 60 ° of conical surface linear contact external toroidal rings on the high-pressure oil pipe, it is characterised in that to be opened in the fuel-displaced valve body
Equipped with one first Leakage Energy oil return hole, a Leakage Energy drainback passage is provided between the fuel-displaced valve body and the plunger bushing,
One second Leakage Energy oil return hole is provided with the plunger bushing, a leakage is provided between the plunger bushing and the pump housing
Oily oil return ring cavity, is provided with one the 3rd Leakage Energy oil return hole and the Leakage Energy oil back chamber of a zero back pressure in the pump housing, described
The oil leak between delivery connection and union nut and high-pressure oil pipe on fuel-displaced valve body by the first Leakage Energy oil return hole, let out
Oil leak drainback passage, the second Leakage Energy oil return hole, Leakage Energy oil return ring cavity, the 3rd Leakage Energy oil return hole flow back into letting out for zero back pressure
In oil leak oil back chamber；Leakage Energy in the Leakage Energy oil back chamber of the zero back pressure is connect by the Leakage Energy on the pump housing
Head and Leakage Energy oil return pipe flow back to fuel tank.
In a preferred embodiment of the invention, the first sealing ring is provided between the plunger bushing and the pump housing
With the second sealing ring, first sealing ring and the second sealing ring are located at the upper and lower both sides of the Leakage Energy oil return ring cavity.
In a preferred embodiment of the invention, it is provided with end face seal between the fuel-displaced valve body and the pump housing
Part.
As a result of technical solution as above, the present invention is effective to be solved because oil pump injection pressure is greatly plus worked
Engine dither in journey, because loosening between the delivery connection in union nut and fuel-displaced valve member in high-pressure oil pipe
Caused oil leakage phenomenon.
Brief description of the drawings
Fig. 1 is the structure diagram for the heavy monoblock pump peculiar to vessel that the present invention has anti-outer dripping structure.
Fig. 2 is enlarged diagram at the I of Fig. 1.
Fig. 3 is the C-C sectional views of Fig. 1.
Fig. 4 is the partial view of the B-B sectional views of Fig. 1.
Fig. 5 is the structure diagram of the high-pressure oil pipe of the present invention.
Embodiment
Referring to Fig. 1 to Fig. 5, a kind of heavy monoblock pump peculiar to vessel with anti-outer dripping structure shown in figure, including 1 He of the pump housing
Seat 12, body of holding out under plunger bushing 2, plunger 3, fuel-flow control pull rod 10, plunger spring 11, plunger spring in the pump housing 1
Component 13 and fuel-displaced valve member.
Plunger 3 is assemblied in the plunger cavity of plunger bushing 2, and 3 lower end of plunger is cased with fuel-flow control pull rod 10, the lower section of plunger bushing 2
It is sequentially arranged with seat 12 under plunger spring 11, plunger spring, body component 13 of holding out.
Fuel-displaced valve body 4 in fuel-displaced valve member is installed on the pump housing 1 and is connected by fastening bolt 9 with plunger bushing 2, fuel-displaced
Delivery connection 4a on valve body 4 is connected by a union nut 15 with high-pressure oil pipe 16, on the oil outlet 4d in delivery connection 4a
60 ° of conical surface linear contact inner collar 4b and 60 ° of conical surface linear contact external toroidal ring 16a on high-pressure oil pipe 16 it is in sealing contact.
Since oil pump injection pressure adds greatly engine dither in the course of work, there is the latent of loosening in union nut 15
In failure.After union nut 15 loosens, on the 60 ° of conical surface linear contact inner collar 4b and high-pressure oil pipe 16 in delivery connection 4a
60 ° of conical surface linear contact external toroidal ring 16a seal failures.High pressure fuel can be by between union nut 15 and delivery connection 4a
Connection screw thread leaks out, to solve because high pressure fuel can be existed by the connection screw thread between union nut 15 and delivery connection 4a
Loosened present in the monoblock pump course of work and cause the incipient fault that high pressure fuel leaks out, the present invention is in fuel-displaced valve body 4
The first Leakage Energy oil return hole 4c of an a diameter of 3mm is offered, a Leakage Energy is provided between fuel-displaced valve body 4 and plunger bushing 2
Drainback passage 17, one second Leakage Energy oil return hole 2a is provided with plunger bushing 2, one is provided between plunger bushing 2 and the pump housing 1
Leakage Energy oil return ring cavity 18, is provided with one the 3rd Leakage Energy oil return hole 19 and the Leakage Energy oil back chamber of a zero back pressure in the pump housing 1
20, the oil leak between delivery connection 4a and union nut 15 and high-pressure oil pipe 16 on so fuel-displaced valve body 4 passes through the first leakage
Oily oil return hole 4c, Leakage Energy drainback passage 17, the second Leakage Energy oil return hole 2a, Leakage Energy oil return ring cavity 18, the 3rd Leakage Energy return
Oilhole 19 is flow back into the Leakage Energy oil back chamber 20 of zero back pressure；Leakage Energy in the Leakage Energy oil back chamber 20 of zero back pressure passes through installation
Leakage Energy connector (not shown) and Leakage Energy oil return pipe (not shown) on the pump housing 1 flow back to fuel tank and (do not show in figure
Go out).
Fuel oil in the fit clearance between plunger bushing 2 and the pump housing 1 by leaking in order to prevent, between plunger bushing 2 and the pump housing 1
The first sealing ring 14 and the second sealing ring 21 are provided with, the first sealing ring 14 and the second sealing ring 21 are located at Leakage Energy oil return ring cavity
18 upper and lower both sides.The first sealing ring 14 is also also located at the lower section of the fuel chamber 22 between plunger bushing 2 and the pump housing 1 at the same time.Fuel oil
Chamber 22 by plunger bushing 2 into, oil return hole 2b, 2c connect with the high-voltage oil cavity 23 at the top of plunger 3.At the same time fuel chamber 22 also with
The return flow oil chamber 24 being arranged in the pump housing 1 is connected with fuel oil oil suction chamber 25.
For the fuel oil leakage in fuel chamber 22, edge face sealing member 14 is provided between fuel-displaced valve body 2 and the pump housing 1.
Plunger 3 is under plunger spring 11 and plunger spring under the action of seat 12, and body component 13 moves downwardly together with holding out,
Fuel oil in fuel chamber 22 by plunger bushing 2 into, the high-voltage oil cavity 23 at oil return hole 2b, 2c and plunger 3 top.Oil spout
When, plunger 3 moves up under the driving for body component 13 of holding out, and the fuel oil in high-voltage oil cavity 23 is compressed, when in high-voltage oil cavity 23
Fuel oil pressure exceed fuel-displaced valve member in oil outlet valve spring 5 elastic force after, delivery valve 8 is opened, in high-voltage oil cavity 23 absolutely
Most of high pressure fuel is by the nozzle opening 2d on plunger bushing 2, delivery valve 8, oil outlet valve spring 5 and is arranged on fuel-displaced valve body 4
Interior oil discharge passage 4e and oil outlet 4d is sprayed into high-pressure oil pipe 16, then sprays into engine by high-pressure oil pipe 16 to fuel injector
Fuel chamber acting produce power.
After the fuel pressure in high-pressure oil pipe 16 is more than the elastic force of draining valve spring 7, gate gurgle valve 6 is opened, high pressure oil
Fuel oil in pipe 16 passes through the oil outlet 4d in fuel-displaced valve body 4, drain path 4f, gate gurgle valve 6, draining valve spring 7 and plunger
Oil leak hole 2e on set 2 is flow back into high-voltage oil cavity 23.
The basic principles, main features and the advantages of the invention have been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these changes
Change and improvement is both fallen within the range of claimed invention.The claimed scope of the invention is by appended claims and its waits
Effect thing defines.
Claims (3)
1. a kind of heavy monoblock pump peculiar to vessel with anti-outer dripping structure, including the pump housing and plunger bushing in the pump housing,
Seat, hold out body component and fuel-displaced valve member under plunger, fuel-flow control pull rod, plunger spring, plunger spring, wherein the delivery valve
Fuel-displaced valve body in component is installed on the pump housing and is connected by fastening bolt with the plunger bushing, going out on the fuel-displaced valve body
Oily connector is connected by a union nut with high-pressure oil pipe, 60 in the delivery connection ° conical surface linear contact inner collar and institute
The 60 ° of conical surface linear contact external toroidal rings stated on high-pressure oil pipe are in sealing contact, it is characterised in that are offered in the fuel-displaced valve body
One first Leakage Energy oil return hole, is provided with a Leakage Energy drainback passage, in institute between the fuel-displaced valve body and the plunger bushing
State and one second Leakage Energy oil return hole is provided with plunger bushing, a Leakage Energy is provided between the plunger bushing and the pump housing and is returned
Oil ring chamber, is provided with one the 3rd Leakage Energy oil return hole and the Leakage Energy oil back chamber of a zero back pressure in the pump housing, described fuel-displaced
The oil leak between delivery connection and union nut and high-pressure oil pipe on valve body passes through the first Leakage Energy oil return hole, Leakage Energy
Drainback passage, the second Leakage Energy oil return hole, Leakage Energy oil return ring cavity, the 3rd Leakage Energy oil return hole flow back into the Leakage Energy of zero back pressure
In oil back chamber；Leakage Energy in the Leakage Energy oil back chamber of the zero back pressure by the Leakage Energy connector on the pump housing and
Leakage Energy oil return pipe flows back to fuel tank.
2. a kind of heavy monoblock pump peculiar to vessel with anti-outer dripping structure as claimed in claim 1, it is characterised in that in the column
The first sealing ring and the second sealing ring are provided between plug sleeve and the pump housing, first sealing ring and the second sealing ring are located at
The upper and lower both sides of the Leakage Energy oil return ring cavity.
A kind of 3. heavy monoblock pump peculiar to vessel with anti-outer dripping structure as claimed in claim 1, it is characterised in that it is described go out
Edge face sealing member is provided between fuel tap body and the pump housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711415986.9A CN107905930A (en) | 2017-12-25 | 2017-12-25 | A kind of heavy monoblock pump peculiar to vessel with anti-outer dripping structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711415986.9A CN107905930A (en) | 2017-12-25 | 2017-12-25 | A kind of heavy monoblock pump peculiar to vessel with anti-outer dripping structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107905930A true CN107905930A (en) | 2018-04-13 |
Family
ID=61870876
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711415986.9A Pending CN107905930A (en) | 2017-12-25 | 2017-12-25 | A kind of heavy monoblock pump peculiar to vessel with anti-outer dripping structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107905930A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109026387A (en) * | 2018-09-05 | 2018-12-18 | 常熟瑞特电气股份有限公司 | A kind of fuel leakage early warning system of diesel engine delivery valve |
| CN111102112A (en) * | 2019-12-31 | 2020-05-05 | 南岳电控（衡阳）工业技术股份有限公司 | Marine monoblock pump chamber internal pressure adjusting structure |
| CN113217245A (en) * | 2021-05-12 | 2021-08-06 | 海盐孚邦机械有限公司 | High-precision automobile oil outlet valve joint |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10110659A (en) * | 1996-10-03 | 1998-04-28 | Yanmar Diesel Engine Co Ltd | Fuel injector |
| CN201292902Y (en) * | 2008-09-27 | 2009-08-19 | 重庆红江机械有限责任公司 | Isobaric injection pump for strengthened diesel engine |
| CN201810438U (en) * | 2010-10-25 | 2011-04-27 | 重庆红江机械有限责任公司 | Constant-pressure oil injection pump of diesel |
| CN207609495U (en) * | 2017-12-25 | 2018-07-13 | 南岳电控（衡阳）工业技术股份有限公司 | A kind of heavy monoblock pump peculiar to vessel with anti-outer dripping structure |
-
2017
- 2017-12-25 CN CN201711415986.9A patent/CN107905930A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10110659A (en) * | 1996-10-03 | 1998-04-28 | Yanmar Diesel Engine Co Ltd | Fuel injector |
| CN201292902Y (en) * | 2008-09-27 | 2009-08-19 | 重庆红江机械有限责任公司 | Isobaric injection pump for strengthened diesel engine |
| CN201810438U (en) * | 2010-10-25 | 2011-04-27 | 重庆红江机械有限责任公司 | Constant-pressure oil injection pump of diesel |
| CN207609495U (en) * | 2017-12-25 | 2018-07-13 | 南岳电控（衡阳）工业技术股份有限公司 | A kind of heavy monoblock pump peculiar to vessel with anti-outer dripping structure |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109026387A (en) * | 2018-09-05 | 2018-12-18 | 常熟瑞特电气股份有限公司 | A kind of fuel leakage early warning system of diesel engine delivery valve |
| CN111102112A (en) * | 2019-12-31 | 2020-05-05 | 南岳电控（衡阳）工业技术股份有限公司 | Marine monoblock pump chamber internal pressure adjusting structure |
| CN113217245A (en) * | 2021-05-12 | 2021-08-06 | 海盐孚邦机械有限公司 | High-precision automobile oil outlet valve joint |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180413 |