CN110593983B - Integrated low-pressure oil supplementing exhaust valve driving device - Google Patents
Integrated low-pressure oil supplementing exhaust valve driving device Download PDFInfo
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- CN110593983B CN110593983B CN201911037865.4A CN201911037865A CN110593983B CN 110593983 B CN110593983 B CN 110593983B CN 201911037865 A CN201911037865 A CN 201911037865A CN 110593983 B CN110593983 B CN 110593983B
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- 230000001502 supplementing effect Effects 0.000 title claims abstract description 38
- 238000013016 damping Methods 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 4
- 230000010354 integration Effects 0.000 abstract description 4
- 239000007788 liquid Substances 0.000 description 8
- 239000000446 fuel Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000003139 buffering effect Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 206010063385 Intellectualisation Diseases 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
- F01L9/10—Valve-gear or valve arrangements actuated non-mechanically by fluid means, e.g. hydraulic
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- Valve Device For Special Equipments (AREA)
Abstract
The invention belongs to the technical field of engines, and discloses an integrated low-pressure oil supplementing exhaust valve driving device which comprises a first shell, wherein a mounting hole is axially penetrated and arranged, the mounting hole comprises a first hole and a second hole, the diameter of the first hole is larger than that of the second hole, and a low-pressure oil supplementing inlet hole communicated with the first hole is arranged on the side wall of the first shell; the one-way valve is arranged on an oil way communicated with the low-pressure oil supplementing inlet hole; the outer piston is arranged in the mounting hole in a sliding manner, and an outer cavity is formed between the outer piston and the first hole; the inner piston is arranged in the outer piston in a sliding manner, an inner cavity is formed between the inner piston and the outer piston, and the inner cavity can be communicated with the outer cavity; the valve rod is connected with one end of the inner piston; the hydraulic switching block is fixedly arranged on the first shell and provided with a first through hole, and one end of the first through hole is communicated with the first hole; and the electromagnetic valve is arranged on the hydraulic switching block and is communicated with the other end of the first through hole. The invention has simple structure and high integration degree, and can meet the requirements of rapid and efficient exhaust.
Description
Technical Field
The invention relates to the technical field of engines, in particular to an integrated low-pressure oil supplementing exhaust valve driving device.
Background
With the increasing prominence of petroleum shortage and global environmental pollution problems worldwide, in order to cope with more and more severe energy situations, efficient, energy-saving and environment-friendly ship power generation products are becoming important points of attention of various countries. The exhaust valve driving system is used as an influencer of gas organization process and combustion quality in the cylinder, and the development of the product and technology directly restrict the development direction of the ship engine.
The electrohydraulic control type exhaust valve driving system is gradually applied and popularized to marine intelligent ship engine products by virtue of the advantages of intellectualization, flexibility, accurate control and the like. However, most of electrohydraulic control exhaust valve driving systems widely used in the market at present are realized based on two sets of structures, namely, a set of independent control units are matched with a set of independent driving units, the structure is complex and heavy, the driving efficiency and the driving quality of the exhaust valve can not be improved, and the development of the marine low-speed diesel engine towards a more intelligent direction is severely restricted.
Disclosure of Invention
The invention aims to provide an integrated low-pressure oil supplementing exhaust valve driving device which is simple in structure and high in integration degree, and can meet the requirements of rapid and efficient exhaust.
To achieve the purpose, the invention adopts the following technical scheme:
an integrated low pressure oil make-up exhaust valve drive comprising:
The first shell is axially penetrated and provided with a mounting hole, the mounting hole comprises a first hole and a second hole which are communicated, the diameter of the first hole is larger than that of the second hole, and the side wall of the first shell is provided with a low-pressure oil supplementing inlet communicated with the first hole;
The one-way valve is arranged on an oil way communicated with the low-pressure oil supplementing inlet hole and used for limiting the oil in the low-pressure oil supplementing inlet hole to flow outwards;
The outer piston is arranged in the mounting hole in a sliding manner, and an outer cavity is formed between the outer piston and the first hole;
The inner piston is arranged in the outer piston in a sliding manner, an inner cavity is formed between the inner piston and the outer piston, and the inner cavity can be communicated with the outer cavity;
The valve rod is connected with one end of the inner piston;
The hydraulic switching block is fixedly arranged on the first shell, a first through hole is formed in the hydraulic switching block, and one end of the first through hole is communicated with the first hole;
And the electromagnetic valve is arranged on the hydraulic switching block and is communicated with the other end of the first through hole.
Preferably, a throttle orifice is arranged on the side part of the outer piston, and the throttle orifice is communicated with the outer cavity and the inner cavity.
Preferably, a second through hole is formed in the side portion of the outer piston, the second through hole is communicated with the outer cavity and the inner cavity, the second through hole is formed in the lower portion of the throttling small hole in the axial direction, and the diameter of the second through hole is larger than that of the throttling small hole.
Preferably, an annular groove is formed in the outer piston, and one end of the second through hole is communicated with the annular groove.
Preferably, the throttle hole is horizontally arranged, and a first distance L1 is formed between the upper end surface of the annular groove and the top wall of the throttle hole.
Preferably, an annular opening is circumferentially formed in one end, which is not connected with the valve rod, of the inner piston, and the outer cavity is communicated with the inner cavity through the throttling small hole and/or the second through hole.
Preferably, the low-pressure oil supplementing inlet hole is horizontally arranged, and a second distance L2 is formed between the bottom wall of the low-pressure oil supplementing inlet hole and the step surface at the joint of the first hole and the second hole.
Preferably, a damping hole is formed in the side wall of the first shell, and the damping hole is communicated with the first hole.
Preferably, a boss is arranged at one end of the hydraulic adapter block, and the boss is installed in one end of the first through hole in a sealing mode.
Preferably, a channel is formed in the outer piston, the inner piston is slidably arranged in the channel, one end of the inner piston can extend out of the bottom of the channel, and an inner cavity is formed between the inner piston and the channel.
The invention has the beneficial effects that: the structure of the invention realizes the integration of the driving device, has simple structure, and can meet the requirements of marine diesel engines, dual-fuel engines and even multi-fuel engines on quick and efficient exhaust.
Drawings
FIG. 1 is a cross-sectional view of an integrated low pressure make-up exhaust valve drive according to the present invention;
FIG. 2 is an enlarged schematic view of the invention at A of FIG. 1;
FIG. 3 is a schematic diagram of the integrated low pressure oil filling exhaust valve driving device according to the present invention in a low pressure oil filling state;
FIG. 4 is a schematic illustration of the valve stem opening process of the integrated low pressure make-up exhaust valve actuator according to the present invention;
fig. 5 is a schematic diagram of the valve rod of the integrated low-pressure oil supplementing exhaust valve driving device according to the present invention when the valve rod is completely opened.
In the figure:
1. A first housing; 11. a first hole; 12. a second hole; 13. low pressure oil supplementing and feeding hole; 14. a damping hole; 15. a third hole; 2. a one-way valve; 3. an outer piston; 31. a throttle orifice; 32. a second through hole; 33. an annular groove; 34. a channel; 4. an inner piston; 41. an annular opening; 5. a valve stem; 6. a hydraulic adapter block; 61. a first through hole; 62. a boss; 7. an electromagnetic valve; 8. a valve housing; 9. a valve seat.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present invention are shown in the drawings.
In the description of the present invention, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", etc. orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the invention. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.
The invention provides an integrated low-pressure oil supplementing exhaust valve driving device which can meet the requirements of a marine diesel engine, a dual-fuel engine and even a multi-fuel engine for quick and efficient exhaust. As shown in fig. 1, the integrated low-pressure oil supplementing exhaust valve driving device comprises a first shell 1, a one-way valve 2, an outer piston 3, an inner piston 4, a valve rod 5, a hydraulic switching block 6, an electromagnetic valve 7, a valve shell 8 and a valve seat 9, wherein the hydraulic switching block 6, the first shell 1, the valve shell 8 and the valve seat 9 are sequentially connected from top to bottom (shown in fig. 1), the outer piston 3 is arranged in the first shell 1, the inner piston 4 is slidably arranged in the outer piston 3, one end of the valve rod 5 is arranged in the first shell 1, and the other end sequentially penetrates through the valve shell 8 and the valve seat 9 to realize opening and closing of the exhaust valve.
In this embodiment, as shown in fig. 1, the first housing 1 is provided with a mounting hole in a stepped hole structure, and the mounting hole includes a first hole 11, a second hole 12 and a third hole 15 that are sequentially connected, where the diameter of the first hole 11 is greater than the diameter of the second hole 12, and the diameter of the third hole 15 is greater than the diameter of the first hole 11. The hydraulic adapter block 6 can be connected to the top of the first bore 11, the outer piston 3 can slide in the first bore 11 and an outer chamber can be formed between the first bore 11 and the outer piston 3. One end of the valve stem 5 can be placed in the second hole 12 and the other end is placed through the third hole 15, the valve housing 8 and the valve seat 9 in this order.
A low-pressure oil supplementing inlet hole 13 communicated with the first hole 11 is formed in the side wall of the first shell 1, and the low-pressure oil supplementing inlet hole 13 is used for supplementing low-pressure oil into the outer cavity. Optionally, the above-mentioned one-way valve 2 is disposed on the pipeline communicating with the low-pressure oil-supplementing oil inlet hole 13, and the conduction direction of the one-way valve 2 is the direction from the outer side of the first casing 1 to the outer cavity, that is, the low-pressure oil in the pipeline communicating with the low-pressure oil-supplementing oil inlet hole 13 can flow into the low-pressure oil-supplementing oil inlet hole 13 through the one-way valve 2, and then flows into the outer cavity, while the oil in the low-pressure oil-supplementing oil-inlet hole 13 cannot flow out through the one-way valve 2.
The side wall of the first casing 1 is also provided with a damping hole 14, the damping hole 14 can be communicated with the first hole 11, and the oil in the outer cavity can flow out in a small amount through the damping hole 14.
The outer piston 3 has a stepped cylindrical structure, as shown in fig. 1, the outer piston 3 may include a first section slidably disposed in the first hole 11 and capable of forming an outer cavity with the first hole 11, and a second section disposed in the second hole 12, and an end portion of the second section, which is not connected to the first section, can be disposed in the third hole 15 when the outer piston 3 slides downward.
The inner piston 4 is slidably disposed in the outer piston 3, and illustratively, a channel 34 may be formed at a central position of the outer piston 3, the channel 34 may be disposed through an end of the outer piston 3 near the valve rod 5, the inner piston 4 may be slidably disposed in the channel 34, and an inner cavity may be formed between the inner piston 4 and the channel 34. The inner cavity can be communicated with the outer cavity, and oil in the outer cavity can flow into the inner cavity to drive the inner piston 4 to drive the valve rod 5 to slide downwards. The oil in the inner chamber can also be pressed out by the inner piston 4 and flow into the outer chamber.
As shown in fig. 2, an annular opening 41 is formed in the circumferential direction of the end of the inner piston 4, to which the valve rod 5 is not connected, and the annular opening 41 can facilitate the inflow of oil in the outer chamber into the inner chamber.
Preferably, a throttle hole 31 is provided at a side portion of the outer piston 3 to communicate the outer chamber and the inner chamber, and oil in the outer chamber can flow into the inner chamber through the throttle hole 31.
A second through hole 32 for communicating the outer chamber and the inner chamber is further provided at the side of the outer piston 3, the second through hole 32 is axially provided below the throttle orifice 31, and the diameter of the second through hole 32 is larger than the diameter of the throttle orifice 31. Through the second through hole 32, the oil in the outer cavity can rapidly enter and exit from the inner cavity, and then the inner piston 4 is driven to rapidly push the valve rod 5 to open, or the inner piston 4 is driven by the valve rod 5 to rapidly discharge the oil in the inner cavity, so that the valve rod 5 is rapidly closed.
In this embodiment, it should be noted that, when the inner piston 4 does not slide, the annular opening 41 on the inner piston 4 communicates with the throttle hole 31 and a small portion of the second through hole 32 (or may not communicate with the second through hole 32), at this time, when the low pressure is replenished, the oil in the low pressure oil replenishing inlet 13 mainly enters the inner cavity through the outer cavity and the throttle hole 31, and a small portion of the oil can enter the inner cavity through the second through hole 32 (when the annular opening 41 communicates with a small portion of the second through hole 32).
As a preferable technical solution, the low-pressure oil supplementing and feeding hole 13 is horizontally arranged, and a second distance L2 is formed between the bottom wall of the low-pressure oil supplementing and feeding hole 13 and the step surface at the junction of the first hole 11 and the second hole 12. This setting of second interval L2 can drive valve rod 5 at outer piston 3 and interior piston 4 and remove to opening the terminal (specifically indicates that valve rod 5 will open to the maximum degree) when, the existence of the interior fluid of space that this second interval L2 corresponds for the step face that the junction formed of first section and second section of outer piston 3 can not direct collision on the step face of junction of first hole 11 and second hole 12, can form the buffering between outer piston 3 and the first casing 1 promptly, avoids outer piston 3 and first casing 1 to receive the damage. Furthermore, by the arrangement of this structure, noise generated by collision between the outer piston 3 and the first housing 1 can be avoided.
As shown in fig. 2, the outer piston 3 is provided with an annular groove 33, specifically, the second section is provided with the annular groove 33, one end of the second through hole 32 is communicated with the annular groove 33, and oil in the outer cavity can enter the second through hole 32 through the annular groove 33, and then enter the inner cavity through the second through hole 32.
Alternatively, the orifice 31 is horizontally disposed, and a first distance L1 (shown in fig. 2) is formed between the top wall of the orifice 31 and the upper end surface of the annular groove 33 (i.e., the stepped surface formed at the junction of the first and second sections). Through this setting of first interval L1, when outer piston 3 and interior piston 4 drive valve rod 5 move to open the terminal (specifically just to open to the maximum extent to valve rod 5), second through-hole 32 is closed by the pore wall of second hole 12 this moment, the step face that first section and second section junction formed can be pressed into restrictor orifice 31 with the oil in the space between the step face that first hole 11 and second hole 12 junction formed, and get into the inner chamber through restrictor orifice 31 for when valve rod 5 moved to the terminal of opening, the inner chamber was left with oil, this oil can avoid appearing rigid collision between outer piston 3 and the interior piston 4, namely can form the buffering between inner piston 4 and outer piston 3, avoid interior piston 4 and outer piston 3 impaired. In addition, by providing this structure, noise generated by collision between the outer piston 3 and the inner piston 4 can be avoided.
In this embodiment, a reset assembly (not shown) for enabling resetting of the valve stem 5 may be provided on the valve stem 5. Preferably, in this embodiment, the resetting component may be an air spring, where the air spring is slidably attached to the inner wall of the third hole 15, and a seal is disposed between the air spring and the inner wall of the third hole 15, and the seal is capable of slidably sealing the air spring and the third hole 15 when the air spring slides relative to the third hole 15.
The hydraulic adapter block 6 is fixedly mounted on the first housing 1, and a first through hole 61 is formed in the hydraulic adapter block 6, and one end of the first through hole 61 is connected to the first hole 11. In this embodiment, a boss 62 may be provided at one end of the hydraulic adapter block 6, and the boss 62 extends into one end of the first hole 11 and is sealed with the first hole 11 by a sealing member. In this embodiment, the first through hole 61 may be an L-shaped through hole, and the first through hole 61 is disposed through the boss 62.
The electromagnetic valve 7 is installed at one side of the hydraulic switching block 6, and the electromagnetic valve 7 is communicated with the other end of the first through hole 61 for controlling the on-off of the oil entering the first through hole 61. That is, when the solenoid valve 7 is opened, oil can enter the first through hole 61 and enter the outer chamber through the first through hole 61, thereby realizing driving of the outer piston 3. Furthermore, the present embodiment integrally mounts the solenoid valve 7 on the hydraulic adapter block 6, which improves the integration level of the entire driving apparatus.
The operation principle of the integrated low-pressure oil supplementing exhaust valve driving device of the embodiment is as follows:
At the time of initial low-pressure oil replenishment, as shown in fig. 3, both the outer piston 3 and the inner piston 4 are in initial positions, and the valve rod 5 is in a closed state at this time. The low-pressure oil liquid is pumped in through external equipment, enters the low-pressure oil supplementing oil inlet hole 13 through the one-way valve 2, is supplemented into the outer cavity through the low-pressure oil supplementing oil inlet hole 13, enters the inner cavity through the throttle hole 31 on the outer piston 3 when the oil liquid in the outer cavity reaches a high position (if the annular opening 41 on the inner piston 4 is communicated with a small part of the second through holes 32, a part of the oil liquid also enters the inner cavity through the second through holes 32), until the inner cavity and the outer cavity are fully filled with the low-pressure oil liquid, and the oil supplementing is completed and waits for an action instruction of the whole machine.
When the whole machine needs to be charged and discharged, the electromagnetic valve 7 is electrified and opened, high-pressure oil enters the first through hole 61 of the hydraulic adapter block 6 through the electromagnetic valve 7 and enters the upper cavity of the outer cavity (namely, the space between the boss hole 62 of the hydraulic adapter block 6 and the outer piston 3 and the first hole 11), meanwhile, as the oil liquid acting area of the upper cavity of the outer cavity is larger than the sum of the oil liquid acting area of the lower cavity of the outer cavity (namely, the space between the step surface at the joint of the first section and the second section and the step surface at the joint of the first hole 11 and the second hole 12) and the inner cavity acting area, the oil liquid in the lower cavity of the outer cavity and the inner cavity is pressurized, and when the acting force of the pressurized high-pressure oil liquid acting on the inner piston 4 is larger than the resistance of the valve rod 5, the valve rod 5 starts to move downwards.
Since the annular area of the outer cavity is larger than that of the inner cavity, oil in the outer cavity enters the inner cavity through the throttling small hole 31 and part of the second through holes 32 on the outer piston 3 in the descending process, and the moving distance of the inner piston 4 in the inner cavity is larger than that of the outer piston 3 in the time (the ratio of the moving distance of the two is the ratio of the oil in the inner cavity to the oil in the outer cavity), when the second through holes 32 are completely communicated with the inner cavity (as shown in fig. 4), the valve rod 5 descends and accelerates. When the valve rod 5 moves to the stroke end, the second through hole 32 on the outer piston 3 is blocked by the first shell 1, oil in the outer cavity enters the inner cavity through the throttle hole 31 on the outer piston 3 and a gap between the outer piston 3 and the first shell 1, the oil filling flow of the inner cavity is reduced, the operation speed of the valve rod 5 is reduced, and the buffer of the stroke end of the valve rod 5 is realized. Finally, the throttle hole 31 on the outer piston 3 is blocked by the first shell 1, the inner cavity and the outer cavity are separated, the inner piston 4 and the outer piston 3 stop running and buffer through the residual oil in the inner cavity, the valve rod 5 reaches the designed stroke (shown in fig. 5), the electromagnetic valve 7 is closed after power-off, and a small distance is reserved between the outer piston 3 and the first shell 1 at the moment, so that the purpose of buffering the impact between the outer piston 3 and the first shell 1 is achieved.
After the complete machine finishes air intake and exhaust, the control system controls the electromagnetic valve 7 to be electrified and opened, the valve rod 5 pushes the inner piston 4 to move upwards under the action of the reset component, and the second through hole 32 and the throttle small hole 31 are still closed by the second hole 12 at the moment, the inner cavity and the outer cavity are not communicated, the inner piston 4 and the outer piston 3 synchronously move upwards under the driving of reset force and low-pressure oil in the low-pressure oil supplementing oil inlet hole 13, and the oil in the upper cavity of the outer cavity flows out through the first through hole 61. Along with the synchronous ascending of the inner piston 4 and the outer piston 3, the second through hole 32 is opened, the inner cavity and the outer cavity are communicated through the second through hole 32, the pressure between the inner cavity and the outer cavity is increased, the low-pressure oil supplementing is closed, and the valve rod 5 ascends and accelerates.
When the valve rod 5 moves up to the end of the stroke (i.e. is about to close), the outer piston 3 returns to the original position, and as a part of low-pressure oil is supplemented into the outer cavity at the initial time of closing the valve rod 5, during the process of returning the outer piston 3 to the original position, the part of redundant oil is discharged through the damping hole 14, so that the seating buffer of the valve rod 5 is realized.
It is to be understood that the above examples of the present invention are provided for clarity of illustration only and are not limiting of the embodiments of the present invention. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the invention. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.
Claims (8)
1. An integrated low pressure oil supplementing exhaust valve driving device, which is characterized by comprising:
the oil filling device comprises a first shell (1), wherein the first shell (1) is axially penetrated and provided with a mounting hole, the mounting hole comprises a first hole (11) and a second hole (12) which are communicated, the diameter of the first hole (11) is larger than that of the second hole (12), and the side wall of the first shell (1) is provided with a low-pressure oil filling inlet hole (13) communicated with the first hole (11);
The one-way valve (2) is arranged on an oil way communicated with the low-pressure oil supplementing inlet hole (13) and used for limiting the oil in the low-pressure oil supplementing inlet hole (13) to flow outwards;
An outer piston (3) is slidably arranged in the mounting hole, and an outer cavity is formed between the outer piston (3) and the first hole (11);
The inner piston (4) is arranged in the outer piston (3) in a sliding manner, an inner cavity is formed between the inner piston (4) and the outer piston (3), and the inner cavity can be communicated with the outer cavity;
a valve rod (5) connected to one end of the inner piston (4);
the hydraulic switching block (6) is fixedly arranged on the first shell (1), a first through hole (61) is formed in the hydraulic switching block (6), and one end of the first through hole (61) is communicated with the first hole (11);
a solenoid valve (7) mounted to the hydraulic pressure switching block (6) and communicating with the other end of the first through hole (61);
a throttle small hole (31) which is communicated with the outer cavity and the inner cavity is arranged at the side part of the outer piston (3);
The low-pressure oil supplementing and feeding hole (13) is horizontally arranged, and a second interval L2 is formed between the bottom wall of the low-pressure oil supplementing and feeding hole (13) and the step surface at the joint of the first hole (11) and the second hole (12).
2. The integrated low-pressure oil supplementing exhaust valve driving device according to claim 1, wherein a second through hole (32) for communicating the outer cavity and the inner cavity is arranged at the side part of the outer piston (3), the second through hole (32) is arranged below the throttling small hole (31) along the axial direction, and the diameter of the second through hole (32) is larger than that of the throttling small hole (31).
3. The integrated low-pressure oil supplementing and exhaust valve driving device according to claim 2, wherein the outer piston (3) is provided with an annular groove (33), and one end of the second through hole (32) is communicated with the annular groove (33).
4. An integrated low-pressure oil-supplementing exhaust valve driving device according to claim 3, wherein the throttle orifice (31) is horizontally arranged, and a first distance L1 is formed between the upper end surface of the annular groove (33) and the top wall of the throttle orifice (31).
5. The integrated low-pressure oil supplementing and exhaust valve driving device according to claim 2, wherein an annular opening (41) is circumferentially formed in one end, which is not connected with the valve rod (5), of the inner piston (4), and the outer cavity is communicated with the inner cavity through the throttling small hole (31) and/or the second through hole (32).
6. The integrated low-pressure oil supplementing and exhaust valve driving device according to claim 1, wherein a damping hole (14) is formed in the side wall of the first housing (1), and the damping hole (14) is communicated with the first hole (11).
7. The integrated low-pressure oil supplementing exhaust valve driving device according to claim 1, wherein one end of the hydraulic adapter block (6) is provided with a boss (62), and the boss (62) is mounted in one end of the first through hole (61) in a sealing manner.
8. The integrated low-pressure oil supplementing and exhaust valve driving device according to claim 1, wherein a channel (34) is formed in the outer piston (3), the inner piston (4) is slidably arranged in the channel (34), one end of the inner piston can extend out of the bottom of the channel (34), and an inner cavity is formed between the inner piston (4) and the channel (34).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911037865.4A CN110593983B (en) | 2019-10-29 | 2019-10-29 | Integrated low-pressure oil supplementing exhaust valve driving device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911037865.4A CN110593983B (en) | 2019-10-29 | 2019-10-29 | Integrated low-pressure oil supplementing exhaust valve driving device |
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| CN110593983A CN110593983A (en) | 2019-12-20 |
| CN110593983B true CN110593983B (en) | 2024-05-14 |
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| CN201911037865.4A Active CN110593983B (en) | 2019-10-29 | 2019-10-29 | Integrated low-pressure oil supplementing exhaust valve driving device |
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| CN114135358B (en) * | 2021-11-24 | 2022-08-26 | 中船动力研究院有限公司 | Control driving device for valve mechanism and internal combustion engine |
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| CN206360745U (en) * | 2016-12-28 | 2017-07-28 | 沪东重机有限公司 | Execution system is controlled by the air bleeding valve of servo oil direct drive |
| CN206439081U (en) * | 2016-12-28 | 2017-08-25 | 沪东重机有限公司 | A kind of Compact modular hydraulic drive mechanism |
| CN209244627U (en) * | 2018-10-23 | 2019-08-13 | 中船动力研究院有限公司 | Multistage draining exhaust valve |
| CN210799064U (en) * | 2019-10-29 | 2020-06-19 | 中船动力研究院有限公司 | Integrated low-pressure oil supplementing exhaust valve driving device |
-
2019
- 2019-10-29 CN CN201911037865.4A patent/CN110593983B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0139566A1 (en) * | 1983-09-23 | 1985-05-02 | Societe Alsacienne De Constructions Mecaniques De Mulhouse | Electro-hydraulic unit for the control of the valves of an internal-combustion engine |
| DE4442057A1 (en) * | 1994-11-25 | 1996-05-30 | Schaeffler Waelzlager Kg | Component part of valve drive of internal combustion engine with hydraulic clearance compensation |
| CN206360745U (en) * | 2016-12-28 | 2017-07-28 | 沪东重机有限公司 | Execution system is controlled by the air bleeding valve of servo oil direct drive |
| CN206439081U (en) * | 2016-12-28 | 2017-08-25 | 沪东重机有限公司 | A kind of Compact modular hydraulic drive mechanism |
| CN209244627U (en) * | 2018-10-23 | 2019-08-13 | 中船动力研究院有限公司 | Multistage draining exhaust valve |
| CN210799064U (en) * | 2019-10-29 | 2020-06-19 | 中船动力研究院有限公司 | Integrated low-pressure oil supplementing exhaust valve driving device |
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| Publication number | Publication date |
|---|---|
| CN110593983A (en) | 2019-12-20 |
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