CN216342523U - High-pressure oil supply pump integrated with electric control pressure release valve - Google Patents
High-pressure oil supply pump integrated with electric control pressure release valve Download PDFInfo
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- CN216342523U CN216342523U CN202123014184.1U CN202123014184U CN216342523U CN 216342523 U CN216342523 U CN 216342523U CN 202123014184 U CN202123014184 U CN 202123014184U CN 216342523 U CN216342523 U CN 216342523U
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Abstract
The utility model provides a high-pressure oil supply pump integrated with an electronic control pressure relief valve, which comprises an oil pumping module, a pressure accumulator body, a pressure relief valve seat and the electronic control pressure relief valve, wherein the oil pumping module is used for providing fuel oil for a common rail system; the pressure accumulator body is connected with the oil pumping module and used for reducing the pressure fluctuation of fuel oil in the common rail system, and is provided with a pressure relief hole which is communicated with a pressure accumulation cavity of the pressure accumulator body and used for discharging the fuel oil in the pressure accumulation cavity; the pressure relief valve seat is connected with the pressure accumulator body, wherein an oil return deviation is arranged on the pressure relief valve seat and can be communicated with the pressure relief hole; the electronic control pressure relief valve is connected to the pressure relief valve seat, when the electronic control pressure relief valve is opened, the pressure relief hole is communicated with the oil return offset, the fuel is discharged out of the pressure relief valve seat to realize pressure relief, when the electronic control pressure relief valve is closed, the pressure relief hole is not communicated with the oil return offset, and the common rail system works normally. The application has high integration level, small occupied space and high pressure relief response speed.
Description
Technical Field
The utility model relates to an oil supply pump, in particular to a high-pressure oil supply pump integrated with an electronic control pressure release valve.
Background
The electronic control pressure relief valve plays a role in ensuring the system safety in the high-pressure common rail system. When the system pressure is too high, the electric control pressure relief valve works to release redundant pressure. Compared with the traditional mechanical pressure relief valve, the electronic control pressure relief valve has high pressure control precision and good reliability, and can be opened and closed repeatedly without shutdown;
at present, most of electric control pressure release valves are integrated on an oil rail, the distance from an oil pumping module is far, the response time is long, the system requirement and the spatial arrangement influence is caused, and the installation position of the electric control pressure release valves is difficult to reserve on the oil rail.
Therefore, a high-pressure oil supply pump integrated with an electronic control pressure release valve is needed, and the problems of long pressure release response time and limited spatial arrangement of a common rail system are solved.
Disclosure of Invention
Aiming at the defects in the prior art, the utility model provides the high-pressure oil supply pump integrated with the electric control pressure release valve, the electric control pressure release valve is closer to the oil pumping module, the pressure release response time is short, the pressure release speed is high, and the pressure release is not limited by the space arrangement of a system. The technical scheme adopted by the utility model is as follows:
a high-pressure oil supply pump integrated with an electric control pressure release valve comprises
The oil pumping module is used for supplying fuel oil to the common rail system;
a pressure accumulator body connected to the oil pumping module for reducing pressure fluctuation of fuel oil in the common rail system, wherein
The pressure accumulator body is provided with a pressure relief hole, the pressure relief hole is communicated with a pressure accumulation cavity of the pressure accumulator body, and the pressure relief hole is used for discharging fuel oil in the pressure accumulation cavity;
a pressure relief valve seat connected to the accumulator body, wherein
An oil return deviation is arranged on the pressure relief valve seat and can be communicated with the pressure relief hole; and
and the electronic control pressure relief valve is connected to the pressure relief valve seat, when the electronic control pressure relief valve is opened, the pressure relief hole is communicated with the oil return offset, the fuel oil is discharged from the pressure relief valve seat to realize pressure relief, when the electronic control pressure relief valve is closed, the pressure relief hole is not communicated with the oil return offset, and the common rail system normally works.
Furthermore, the electric control pressure relief valve comprises an oil return valve seat, a steel ball, a ball seat, an armature part and an electromagnet part which are sequentially arranged in the pressure relief valve seat;
the oil return valve seat is abutted against the pressure accumulator body and corresponds to the pressure relief hole in position, and the oil return valve seat can communicate the pressure relief hole and the oil return offset;
when the electronic control pressure relief valve is opened, the ball seat is close to the electromagnet part along with the armature part, the steel ball leaves the oil return valve seat, the pressure relief hole is communicated with the oil return offset, when the electronic control pressure relief valve is closed, the ball seat is far away from the electromagnet part along with the armature part, the steel ball is abutted to the oil return valve seat, and the pressure relief hole is not communicated with the oil return offset.
Further, a pressure relief channel is arranged on the oil return valve seat and is communicated with the pressure relief hole and the oil return deviation;
when the electronic control pressure relief valve is opened, the steel ball does not block the pressure relief channel, the pressure relief channel is communicated with the pressure relief hole and the oil return deviation, and when the electronic control pressure relief valve is closed, the steel ball blocks the pressure relief channel, and the pressure relief hole and the oil return deviation are blocked by the pressure relief channel.
Furthermore, be equipped with sealed conical surface on the oil return disk seat, sealed conical surface sets up with pressure release channel is relative, the steel ball can the butt in sealed conical surface with shutoff pressure release channel.
Furthermore, a ball socket is arranged on the ball seat and used for positioning the steel ball.
Furthermore, a first adjusting washer and a compression nut are sleeved on the armature component, the first adjusting washer abuts against the oil return valve seat, the compression nut is connected to the pressure relief valve seat in a threaded mode, and the compression nut can tightly press the first adjusting washer and the oil return valve seat on the pressure accumulator body;
the first adjusting washer is provided with at least one through groove, one end of the through groove is communicated with the oil return deviation, and the other end of the through groove can be communicated with the pressure relief channel.
Furthermore, an armature spring is arranged between the electromagnet component and the armature component and is used for resetting the armature component and the steel ball;
when the electronic control pressure relief valve is opened, the deformation quantity and the elastic force of the armature spring are increased, and when the electronic control pressure relief valve is closed, the deformation quantity and the elastic force of the armature spring are reduced.
Further, a second adjusting washer is arranged between the armature spring and the electromagnet component, and the second adjusting washer is used for adjusting the precompression amount of the armature spring.
Furthermore, a locking cap is sleeved on the electromagnet component, the locking cap is in threaded connection with the pressure relief valve seat, and the locking cap is used for fixing the electromagnet component; and/or the presence of a gas in the gas,
and a sealing ring is arranged between the electromagnet part and the pressure relief valve seat.
Furthermore, an oil return hole is formed in the pressure accumulator body, an oil return channel and an oil tank interface are arranged on the oil pumping module, the oil return hole is communicated with an oil return offset, one end of the oil return channel is communicated with the oil return hole, the other end of the oil return channel is communicated with the oil tank interface, and the oil tank interface is convenient for pressure relief of a fuel oil flow return tank.
The utility model has the advantages that:
1. the electronic control pressure relief valve is integrated on the oil pumping module, is closer to the oil pumping module, has short pressure response time and high speed of the common rail system, realizes the pressure relief function more quickly, is not influenced by the spatial arrangement of the common rail system, and is more convenient to install;
2. the pressure accumulator body is provided with an oil return hole which is communicated with an oil return channel on the oil pumping module, and the oil tank interface is connected with an oil tank, so that the decompressed fuel oil flows back to the oil tank conveniently, the laying of additional pipelines is reduced, the space is saved, and the cost is reduced.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view of the assembly of a pressure relief valve seat and an electrically controlled pressure relief valve.
In the figure: 1-oil pumping module, 2-pressure accumulator body, 3-pressure relief valve seat, 4-electronic control pressure relief valve, 101-oil return channel, 102-oil tank interface, 201-pressure relief hole, 202-oil return hole, 301-oil return offset, 401-oil return valve seat, 402-steel ball, 403-ball seat, 404-first adjusting washer, 405-armature part, 406-compression nut, 407-armature spring, 408-second adjusting washer, 409-electromagnet part, 410-locking cap, 411-sealing ring, 4011-pressure relief channel, 4012-sealing conical surface and 4041-through groove.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
Referring to fig. 1-2, the present invention provides a high pressure fuel supply pump with an integrated electric control pressure relief valve, which comprises
The device comprises an oil pumping module 1, a pressure accumulator body 2, a pressure relief valve seat 3 and an electric control pressure relief valve 4, wherein the oil pumping module 1 is used for providing fuel oil for a common rail system; the pressure accumulator body 2 is connected with the oil pumping module 1 and is used for reducing the pressure fluctuation of fuel oil in the common rail system, wherein the pressure accumulator body 2 is provided with a pressure relief hole 201, the pressure relief hole 201 is communicated with a pressure storage cavity of the pressure accumulator body 2, and the pressure relief hole 201 is used for discharging the fuel oil in the pressure storage cavity; the pressure relief valve seat 3 is connected with the pressure accumulator body 2, wherein an oil return deviation 301 is arranged on the pressure relief valve seat 3, and the oil return deviation 301 can be communicated with the pressure relief hole 201; the electronic control pressure release valve 4 is connected to the pressure release valve seat 3, when the electronic control pressure release valve 4 is opened, the pressure release hole 201 is communicated with the oil return deviation 301, the fuel oil is discharged from the pressure release valve seat 3 to realize pressure release, when the electronic control pressure release valve 4 is closed, the pressure release hole 201 is not communicated with the oil return deviation 301, and the common rail system normally works.
In this application, the oil pumping module 1 communicates the pressure accumulation cavity of the pressure accumulator body 2, and the oil pumping module 1 supplies fuel oil to the pressure accumulation cavity under pressure, and when the pressure of the common rail system is normal, the fuel oil pressure in the pressure accumulation cavity is in a normal range, and the electronic control pressure release valve 4 is closed, and when the pressure of the common rail system is too high, the electronic control pressure release valve 4 is opened, and the fuel oil is released through the pressure release hole 201 and the oil return deviation 301 until the pressure of the common rail system is recovered to be normal, and the electronic control pressure release valve 4 is closed. The pressure relief response time is shortened by indirectly integrating the electronic control pressure relief valve 4 on the oil pumping module 1, so that the safety valve does not need to be installed on an oil rail, other functional parts can be flexibly arranged, and the arrangement position of the electronic control pressure relief valve 4 is not influenced by the spatial arrangement of a common rail system.
As some embodiments of the present application, the accumulator body 2 is connected to the oil pumping module 1 by bolts, and the relief valve seat 3 is connected to the accumulator body 2 by bolts.
In the application, the electronic control pressure relief valve 4 comprises an oil return valve seat 401, a steel ball 402, a ball seat 403, an armature component 405 and an electromagnet component 409 which are sequentially arranged in the pressure relief valve seat 3; the oil return valve seat 401 is abutted against the pressure accumulator body 2, the oil return valve seat 401 corresponds to the pressure relief hole 201 in position, and the oil return valve seat 401 can communicate the pressure relief hole 201 with the oil return deviation 301; when the electronic control pressure release valve 4 is opened, the ball seat 403 is close to the electromagnet part 409 along with the armature part 405, the steel ball 402 leaves the oil return valve seat 401, the pressure release hole 201 is communicated with the oil return deviation 301, when the electronic control pressure release valve 4 is closed, the ball seat 403 is far away from the electromagnet part 409 along with the armature part 405, the steel ball 402 is abutted to the oil return valve seat 401, and the pressure release hole 201 is not communicated with the oil return deviation 301.
The electromagnet component 409 is connected to a control system, and the control system controls the electromagnet component 409 to be switched on and off so as to realize the motion of the armature component 405.
Specifically, a pressure relief channel 4011 is arranged on the oil return valve seat 401, and the pressure relief channel 4011 communicates the pressure relief hole 201 and the oil return offset 301; when the electronic control pressure relief valve 4 is opened, the steel ball 402 does not block the pressure relief channel 4011, the pressure relief channel 4011 is communicated with the pressure relief hole 201 and the oil return deviation 301, when the electronic control pressure relief valve 4 is closed, the steel ball 402 blocks the pressure relief channel 4011, and the pressure relief channel 4011 blocks the pressure relief hole 201 and the oil return deviation 301.
The oil return valve seat 401 is provided with a sealing conical surface 4012, the sealing conical surface 4012 is opposite to the pressure relief channel 4011, and the steel ball 402 can abut against the sealing conical surface 4012 to block the pressure relief channel 4011.
As an embodiment of the present application, a ball socket is provided on the ball socket 403, and the ball socket is used for positioning the steel ball 402; the steel ball 402 can not fall off from the ball socket in the moving process, and the steel ball 402 is prevented from deviating.
As other embodiments of the present application, the oil return valve seat 401 is in clearance fit with the pressure relief valve seat 3, so that the fuel oil smoothly enters the oil return deviation 301.
In order to adjust the stroke of the armature component 405, a first adjusting washer 404 and a compression nut 406 are sleeved on the armature component 405, the first adjusting washer 404 abuts against the oil return valve seat 401, the compression nut 406 is in threaded connection with the pressure relief valve seat 3, and the compression nut 406 can press the first adjusting washer 404 and the oil return valve seat 401 on the pressure accumulator body 2; by changing the thickness of the first adjustment washer 404, the movement stroke of the armature member 405 can be adjusted, and then the opening degree of the relief passage 4011 is adjusted, and the relief flow rate is adjusted.
To achieve positioning of the armature member 405 for movement in one direction, the armature member 405 is provided with a step that abuts the first adjustment washer 404 when the armature member 405 is close to the electromagnet member 409 and moves away from the first adjustment washer 404 when the armature member 405 is far from the electromagnet member 409; the motion stops when the armature component 405 abuts the step.
In some embodiments, at least one through groove 4041 is provided on the first adjusting washer 404, one end of the through groove 4041 communicates with the oil return offset 301, and the other end of the channel 4041 can communicate with the pressure relief channel 4011; at least one passage 4041 provides for fuel flow to effect fuel drainage.
In the application, an armature spring 407 is arranged between the electromagnet component 409 and the armature component 405, and the armature spring 407 is used for resetting the armature component 405 and the steel ball 402; when the electronic control pressure relief valve 4 is opened, the deformation amount and the elastic force of the armature spring 407 increase, and when the electronic control pressure relief valve 4 is closed, the deformation amount and the elastic force of the armature spring 407 decrease.
As an embodiment of the present application, a second adjusting washer 408 is provided between the armature spring 407 and the electromagnet member 409, and the second adjusting washer 408 is used to adjust the precompression amount of the armature spring 407.
In order to facilitate the disassembly and assembly of the electromagnet component 409 and the replacement of internal parts such as the armature spring 407, a locking cap 410 is sleeved on the electromagnet component 409, the locking cap 410 is in threaded connection with the pressure relief valve seat 3, and the locking cap 410 is used for fixing the electromagnet component 409.
In order to improve the sealing performance between the electrically controlled pressure relief valve 4 and the pressure relief valve seat 3, a sealing ring 411 is arranged between the electromagnet part 409 and the pressure relief valve seat 3.
In this application, be equipped with oil gallery 202 on the pressure accumulator body 2, be equipped with oil return 101 and oil tank interface 102 on the pump oil module 1, oil gallery 202 intercommunication oil return off normal 301, oil return 101 one end intercommunication oil gallery 202, oil return 101 other end intercommunication oil tank interface 102, the fuel oil flow oil tank of the pressure release of being convenient for of oil tank interface 102. The fuel oil which is decompressed flows back to the oil tank from the pressure accumulator body 2 and the oil pumping module 1, an external oil pipe is not needed, and the laying space and cost are saved.
The working principle is as follows:
when the common rail system works, the electronic control pressure relief valve 4 is closed under a normal pressure state, the armature component 405 and the ball seat 403 tightly press the steel ball 402 on the sealing conical surface 4012 under the action of the elastic force of the armature spring 407, fuel in a pressure accumulation cavity is blocked and cannot pass through the pressure relief channel 4011, when the pressure is too high, the electronic control pressure relief valve 4 is opened under the control of a control system, the armature component 409 attracts the armature component 405, the armature component 405 moves towards the electromagnet component 409, the steel ball 402 overcomes the elastic force of the armature spring 407 to move away from the sealing conical surface 4012 under the action of the pressure of the fuel, and the fuel in the pressure accumulation cavity flows to the oil tank interface 102 from the pressure relief hole 201, the pressure relief channel 4011, the through groove 4041, the oil return deviation 301, the oil return hole 202 and the oil return channel 101 and then flows back to the oil tank. Along with the discharge of fuel oil, the system pressure is recovered to be normal, the electronic control pressure relief valve 4 is closed under the control of the control system, the steel ball 402 is pressed on the sealing conical surface 4012 again under the action of the armature component 405 and the armature spring 407, the fuel oil in the pressure accumulation cavity is blocked again, the common rail system works again, the whole process is safe and reliable, the shutdown is not needed, and the pressure relief response speed is high.
Finally, it should be noted that the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to examples, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (10)
1. The utility model provides a high-pressure fuel feed pump of integrated automatically controlled relief valve which characterized in that: comprises that
The oil pumping module (1) is used for supplying fuel oil to the common rail system;
a pressure accumulator body (2) connected to the pumping module (1) for reducing pressure fluctuations of the fuel in the common rail system, wherein
The pressure accumulator body (2) is provided with a pressure relief hole (201), the pressure relief hole (201) is communicated with a pressure accumulation cavity of the pressure accumulator body (2), and the pressure relief hole (201) is used for discharging fuel oil in the pressure accumulation cavity;
a pressure relief valve seat (3) connected to the accumulator body (2), wherein
An oil return deviation (301) is arranged on the pressure relief valve seat (3), and the oil return deviation (301) can be communicated with the pressure relief hole (201); and
the electronic control pressure relief valve (4) is connected to the pressure relief valve seat (3), when the electronic control pressure relief valve (4) is opened, the pressure relief hole (201) is communicated with the oil return deviation (301), the pressure relief is realized by the fuel oil discharging pressure relief valve seat (3), when the electronic control pressure relief valve (4) is closed, the pressure relief hole (201) is not communicated with the oil return deviation (301), and the common rail system normally works.
2. The high-pressure oil supply pump integrated with the electrically-controlled pressure relief valve according to claim 1, characterized in that: the electric control pressure relief valve (4) comprises an oil return valve seat (401), a steel ball (402), a ball seat (403), an armature component (405) and an electromagnet component (409) which are sequentially arranged in the pressure relief valve seat (3);
the oil return valve seat (401) is abutted to the pressure accumulator body (2), the oil return valve seat (401) corresponds to the pressure relief hole (201) in position, and the oil return valve seat (401) can communicate the pressure relief hole (201) with the oil return deviation (301);
when electronic control relief valve (4) are opened, ball seat (403) are close to electro-magnet part (409) along with armature part (405), steel ball (402) leave return oil disk seat (401), and pressure release hole (201) and return oil off normal (301) communicate, when electronic control relief valve (4) are closed, electro-magnet part (409) is kept away from along with armature part (405) in ball seat (403), steel ball (402) butt return oil disk seat (401), and pressure release hole (201) and return oil off normal (301) do not communicate.
3. The high-pressure oil supply pump integrated with the electrically-controlled pressure relief valve according to claim 2, characterized in that: a pressure relief channel (4011) is arranged on the oil return valve seat (401), and the pressure relief channel (4011) is communicated with a pressure relief hole (201) and an oil return deviation (301);
when automatically controlled relief valve (4) are opened, steel ball (402) do not block up pressure release passageway (4011), pressure release passageway (4011) intercommunication pressure release hole (201) and oil return off normal (301), when automatically controlled relief valve (4) are closed, steel ball (402) shutoff pressure release passageway (4011), pressure release hole (201) and oil return off normal (301) are blocked in pressure release passageway (4011).
4. The high-pressure oil supply pump integrating the electrically-controlled pressure relief valve according to claim 3, characterized in that: be equipped with sealed conical surface (4012) on oil return valve seat (401), sealed conical surface (4012) and pressure release passageway (4011) set up relatively, steel ball (402) can butt in sealed conical surface (4012) with shutoff pressure release passageway (4011).
5. The high-pressure feed pump integrated with an electrically controlled pressure relief valve according to any one of claims 2-4, characterized in that: the ball seat (403) is provided with a ball socket which is used for positioning the steel ball (402).
6. The high-pressure feed pump integrated with an electrically controlled pressure relief valve according to any one of claims 2-4, characterized in that: the armature component (405) is sleeved with a first adjusting washer (404) and a compression nut (406), the first adjusting washer (404) abuts against the oil return valve seat (401), the compression nut (406) is connected to the pressure relief valve seat (3) in a threaded mode, and the compression nut (406) can press the first adjusting washer (404) and the oil return valve seat (401) on the pressure accumulator body (2);
be equipped with at least one logical groove (4041) on first adjustment packing ring (404), lead to groove (4041) one end intercommunication oil return off normal (301), lead to groove (4041) other end and can communicate pressure release passageway (4011).
7. The high-pressure feed pump integrated with an electrically controlled pressure relief valve according to any one of claims 2-4, characterized in that: an armature spring (407) is arranged between the electromagnet component (409) and the armature component (405), and the armature spring (407) is used for resetting the armature component (405) and the steel ball (402).
8. The high-pressure oil supply pump integrating the electrically-controlled pressure relief valve according to claim 7, characterized in that: a second adjusting washer (408) is arranged between the armature spring (407) and the electromagnet component (409), and the second adjusting washer (408) is used for adjusting the precompression amount of the armature spring (407).
9. The high-pressure oil supply pump integrating the electrically-controlled pressure relief valve according to claim 8, characterized in that: the electromagnet component (409) is sleeved with a locking cap (410), the locking cap (410) is in threaded connection with the pressure relief valve seat (3), and the locking cap (410) is used for fixing the electromagnet component (409); and/or the presence of a gas in the gas,
and a sealing ring (411) is arranged between the electromagnet component (409) and the pressure relief valve seat (3).
10. The high-pressure feed pump integrated with an electrically controlled pressure relief valve according to any one of claims 1 to 4, characterized in that: and an oil return hole (202) is formed in the pressure accumulator body (2), and the oil return hole (202) is used for being communicated with an oil tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123014184.1U CN216342523U (en) | 2021-12-02 | 2021-12-02 | High-pressure oil supply pump integrated with electric control pressure release valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123014184.1U CN216342523U (en) | 2021-12-02 | 2021-12-02 | High-pressure oil supply pump integrated with electric control pressure release valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216342523U true CN216342523U (en) | 2022-04-19 |
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ID=81156951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123014184.1U Active CN216342523U (en) | 2021-12-02 | 2021-12-02 | High-pressure oil supply pump integrated with electric control pressure release valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216342523U (en) |
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2021
- 2021-12-02 CN CN202123014184.1U patent/CN216342523U/en active Active
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