CN111042888A - Exhaust valve applied to low-speed two-stroke diesel engine and hydraulic control system thereof - Google Patents
Exhaust valve applied to low-speed two-stroke diesel engine and hydraulic control system thereof Download PDFInfo
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- CN111042888A CN111042888A CN201911290090.1A CN201911290090A CN111042888A CN 111042888 A CN111042888 A CN 111042888A CN 201911290090 A CN201911290090 A CN 201911290090A CN 111042888 A CN111042888 A CN 111042888A
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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
- F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
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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
- F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
- F01L3/10—Connecting springs to valve members
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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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
The invention discloses an exhaust valve applied to a low-speed two-stroke diesel engine and a hydraulic control system thereof, wherein the exhaust valve comprises an upper shell and a lower shell which are connected with each other and an exhaust valve rod which penetrates through the upper shell and the lower shell. The invention solves the problems that the speed of the air flow rotary wing rotating exhaust valve rod is not uniform and is greatly influenced by air flow, and the problems that the existing hydraulic rotary valve device can not accurately control the rotating angle, hydraulic oil is easy to be polluted and blocked and the like. The invention also discloses a hydraulic control system applied to the exhaust valve of the low-speed two-stroke diesel engine.
Description
Technical Field
The invention relates to a diesel engine, in particular to an exhaust valve of a low-speed two-stroke diesel engine and a hydraulic control system thereof.
Background
The exhaust valve is an important component of a marine low-speed two-stroke diesel engine, and the intake and exhaust processes of the diesel engine are controlled by controlling the opening and closing of the exhaust valve. The working quality of the exhaust valve device directly influences the ventilation quality of the diesel engine, and further influences the working capacity of the diesel engine. Among them, the hydraulic opening and closing device of the exhaust valve is generally applied to low-speed diesel engines because of its advantages of small size, low noise, no side thrust on the air valve, convenient arrangement, convenient assembly and disassembly, etc.
When the exhaust valve is opened and closed for a long time, the valve disc can generate carbon deposition, the valve can be not closed tightly, and the valve disc can be corroded. In order to solve the problem, the exhaust valve of most of the existing marine low-speed two-stroke diesel engines adopts a method of additionally arranging a rotor wing on a valve rod, and the kinetic energy is provided by the waste gas after combustion in a combustion chamber to blow the rotor wing to rotate, so that the exhaust valve rod is driven to rotate. However, when the mode of relying on the air flow rotor wing is in low-load operation, the discharged waste gas is less, and the valve rod cannot be driven to rotate, so that the problems of carbon deposition and valve disc corrosion are caused.
Disclosure of Invention
The present invention is directed to overcome the above problems and disadvantages of the prior art, and to provide an exhaust valve with a valve rotating device capable of continuously rotating a valve rod, and a hydraulic control system thereof.
The invention solves the problems that the valve rod of the air flow rotary wing has uneven speed and is greatly influenced by the air flow, and the problems that the existing hydraulic rotary valve device can not accurately control the rotating angle, hydraulic oil is easy to pollute and block, and the like.
In order to achieve the purpose, the invention is realized by adopting the following technical scheme.
An exhaust valve applied to a low-speed two-stroke diesel engine comprises an upper shell 1 and a lower shell 2 which are connected with each other and an exhaust valve rod 5 which penetrates through the upper shell 1 and the lower shell 2, and is characterized in that a section of the exhaust valve rod 5 which penetrates through the upper shell 1 is sequentially sleeved with a sleeve II 11, a ratchet wheel 8-9, a sleeve I9, an air spring device 7 and a baffle 6 from bottom to top, a hydraulic piston 4 and a radial blind hole which is connected with an oil filling pipe 3 are arranged at the top of the exhaust valve rod 5, a symmetrical through hole is formed in a shell wall of the upper shell 1 which deviates from the center, and a hydraulic actuating mechanism 8 which is meshed with the ratchet wheel 8-9 is arranged in the symmetrical through hole.
Preferably, the hydraulic actuator 8 is composed of a hydraulic cylinder 8-1, a hydraulic piston 8-2, a hydraulic piston rod 8-3, a pawl 8-6, a stop device 8-7 and an elastic support device 8-8, wherein the hydraulic cylinder 8-1 is hermetically installed in one through hole of the symmetrical through hole, the hydraulic piston 8-2 is arranged in the hydraulic cylinder 8-1, a first hydraulic oil inlet 8-4 is formed in the left hydraulic cylinder 8-1 of the hydraulic piston 8-2, and a second hydraulic oil inlet 8-5 is formed in the right hydraulic cylinder 8-1; one end of the hydraulic piston rod 8-3 is connected with the hydraulic piston 8-2, the other end of the hydraulic piston rod is sleeved with a spring sleeve 10, and the spring sleeve 10 is hermetically arranged in the other through hole of the symmetrical through holes; the stopping device 8-7, the pawl 8-6 and the elastic supporting device 8-8 are sequentially arranged on a plane corresponding to the ratchet wheel 8-9 in the middle of the hydraulic piston rod 8-3.
Preferably, the air spring device 7 comprises an air spring piston 7-1 and a sealing gas (7-2; wherein the piston sealing cylinder 7-2 is a barrel-shaped member with a central hole at the bottom, and the air spring piston 7-1 is a disc-shaped member with a central hole and is hermetically arranged in the piston sealing cylinder 7-2 to move up and down by being sleeved on the exhaust valve rod 5.
Further preferably, a sealing ring II 7-4 is further arranged in a center hole in the bottom of the piston sealing cylinder 7-2, and a sealing ring I7-3 is further arranged in a center hole of the air spring piston 7-1.
Further preferably, the ratchets 8-9 are external-meshed single-acting ratchets.
In order to achieve the purpose, the invention is realized by adopting another technical scheme.
A hydraulic control system applied to a low-speed two-stroke diesel engine exhaust valve comprises a controller 12, an electro-hydraulic directional valve 13, a high-pressure oil pipe 14, an oil tank 18, a one-way valve 15, a sequence valve 16 and an oil injection valve 17; the controller 12 is connected with the electro-hydraulic reversing valve 13 through two conducting wires, one conducting wire is connected to the position above the electro-hydraulic reversing valve 13 from the controller 12, and the other conducting wire is connected to the position below the electro-hydraulic reversing valve 13 from the controller 12; the electro-hydraulic reversing valve 13 is provided with a high-pressure oil inlet a, an oil injection valve pressure oil inlet b, an oil injection port c, a first oil port d, a second oil port e and an oil return port f, wherein,
the high-pressure oil inlet a is connected with a high-pressure oil pipe 14 through a pipeline;
the pressure oil inlet b of the oil injection valve is connected with an oil injection valve 17 arranged on the cylinder of the low-speed two-stroke diesel engine through a pipeline;
the oil filling port c is connected with an oil filling pipe 3 arranged at the top of the exhaust valve rod 5 through a pipeline;
the first oil port d is connected with the one-way valve 15 and the sequence valve 16 in parallel through pipelines to a first hydraulic oil inlet and outlet 8-4 of the hydraulic actuating mechanism 8;
the second oil port e is connected with a second hydraulic oil inlet and outlet 8-5 of the hydraulic actuating mechanism 8 through a pipeline;
the oil return port f is connected with the oil tank 18 through a pipeline.
Further preferably, the controller 12 is siemens s 7 series, PLC or single chip microcomputer.
Preferably, the electro-hydraulic directional valve 13 is a pilot-operated electro-hydraulic four-position six-way directional valve or an electro-hydraulic four-position six-way directional valve.
Further preferably, the sequence valve 16 is an internal control internal leakage sequence valve or an internal control external leakage sequence valve.
The invention has the advantages and beneficial effects that:
1. the problem of the air current rotor rotate exhaust valve rod speed uneven, receive the air current to influence greatly to and current hydraulic pressure rotary valve ware can not accurate control rotation angle, and hydraulic oil easily receives the pollution, easily blocks up the scheduling problem is solved.
2. By adopting the exhaust valve, the service life of the exhaust valve rod between two times of maintenance is remarkably prolonged, and the cost for replacing the exhaust valve rod is saved. Because the exhaust valve rod is subjected to circumferential acting force to rotate when moving up and down, the carbon deposition condition on the exhaust air valve is effectively solved. The exhaust valve has the characteristic of convenient disassembly and maintenance, and avoids the condition that the pawl pushes the ratchet wheel without the valve disc leaving the shell, thereby driving the exhaust valve rod to rotate, and reducing unnecessary mechanical damage.
Drawings
Figure 1 is a schematic diagram of the hydraulic control system of the exhaust valve of the present invention,
fig. 2 is a schematic view showing the construction of the exhaust structure of the present invention, i.e., a cross-sectional view C-C of fig. 3,
figure 3 is a cross-sectional view a-a of figure 2,
figure 4 is a schematic view of the air spring assembly configuration,
figure 5 is a schematic diagram of a hydraulic actuator configuration,
the reference numbers in the figures illustrate: 1. the hydraulic control system comprises an upper shell, a lower shell, 3 an oil injection pipe, 4 a hydraulic piston, 5 an exhaust valve rod, 6 a baffle, 7 an air spring device, 7-1 an air spring piston, 7-2 a sealing cylinder, 7-3 a sealing ring I, 7-4 a sealing ring II, 8 a hydraulic actuator, 8-1 a hydraulic cylinder, 8-2 a piston, 8-3 a hydraulic piston rod, 8-4 a first hydraulic oil inlet and outlet, 8-5 a second hydraulic oil inlet and outlet, 8-6 a pawl, 8-7 a stopping device, 8-8 an elastic supporting device, 8-9 a ratchet wheel, 9 a sleeve I, 10 a spring sleeve, 11 a sleeve II, 12 a controller, 13 an electro-hydraulic reversing valve, 14 a hydraulic oil pipe, 15 a one-way valve, 16 a sequence valve, 17. the oil injection valve comprises an oil injection valve body, 18 an oil tank, a high-pressure oil inlet, b a pressure oil inlet of the oil injection valve, c an oil injection port, d a first oil port, e a second oil port and f an oil return port.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be 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 invention and are not intended to limit the invention.
In this embodiment, a single chip microcomputer is used as a controller, an electro-hydraulic four-position six-way reversing valve, an internal control internal discharge type sequence valve and an external engagement type ratchet wheel are used for describing the embodiment.
As shown in fig. 1, the hydraulic control system applied to the exhaust valve of the low-speed two-stroke diesel engine comprises a controller 12, a high-pressure oil pipe 14, a one-way valve 15, an electro-hydraulic directional valve 13, a hydraulic actuator 8, an oil injection valve 17, a valve rod 5, a sequence valve 16 and an oil tank 18; the controller 12 is connected with the electro-hydraulic reversing valve 13 through two lines, one conducting wire is connected to the position above the electro-hydraulic reversing valve 13 from the controller 12, and the other conducting wire is connected to the position below the electro-hydraulic reversing valve 13 from the controller 12; the electro-hydraulic reversing valve 13 is provided with a high-pressure oil inlet a, an oil injection valve pressure oil inlet b, an oil injection port c, a first oil port d, a second oil port e and an oil return port f; wherein the content of the first and second substances,
the high-pressure oil inlet a is connected with the high-pressure oil pipe 14 through a pipeline,
the pressure oil inlet b of the injection valve is connected with an injection valve 17 arranged on the cylinder of the low-speed two-stroke diesel engine through a pipeline,
the oil filler c is connected with an oil filler pipe 3 arranged on the top of the valve rod 5 through a pipeline,
the first oil port d is connected with the one-way valve 15 and the sequence valve 16 through pipelines, the one-way valve 15 and the sequence valve 16 are in a parallel structure,
the check valve 15 and the sequence valve 16 are connected with a first hydraulic oil inlet and outlet 8-4 of the hydraulic actuating mechanism 8 through pipelines,
the second oil port e is connected with a second hydraulic oil inlet and outlet 8-5 of the hydraulic actuating mechanism 8 through a pipeline,
the oil return port f is connected with the oil tank 18 through a pipeline.
As shown in fig. 2-5, the exhaust valve applied to the low-speed two-stroke diesel engine of the present invention comprises an upper shell 1 and a lower shell 2, an oil filling pipe 3, a hydraulic piston 4, an exhaust valve rod 5, a baffle 6, an air spring device 7, a hydraulic actuator 8, a first sleeve 9, a spring sleeve 10, and a second sleeve 11; the upper shell 1 is internally provided with large, medium and small stepped holes, the exhaust valve rod 5 penetrates through the upper shell 1 and the lower shell 2, wherein a section of the exhaust valve rod 5 penetrating through the upper shell 1 is sleeved with a second sleeve 11, ratchet wheels 8-9, a first sleeve 9, an air spring device 7 and a baffle 6 in turn from bottom to top, the top of the exhaust valve rod 5 is provided with a hydraulic piston 4, the side surface of the upper part of the upper shell 1 is provided with a radial blind hole for installing an oil filling pipe 3, the middle lower part of the upper shell 1 deviating from the center is provided with a symmetrical through hole, a hydraulic actuating mechanism 8 meshed and connected with the ratchet wheels 8-9 is arranged in the symmetrical through hole, one through hole is provided with a hydraulic cylinder 8-1 in the hydraulic actuating mechanism 8, the hydraulic cylinder 8-1 is fixedly connected with the upper shell 1 through a flange by a bolt, and the other through hole is provided with a spring sleeve 10; the spring sleeve 10 is fixedly connected with the upper shell 1 through a flange by using bolts. The hydraulic actuating mechanism 8 is provided with a hydraulic cylinder 8-1 and a hydraulic piston rod 8-3 in sequence from left to right; a piston 8-2 is arranged in the hydraulic cylinder 8-1, and the piston 8-2 is fixedly connected with a hydraulic piston rod 8-3; the piston 8-2 is connected with the hydraulic cylinder 8-1 in a sliding way; a section of plane is cut in the middle of the hydraulic piston rod 8-3 and used as a ratchet bar, and a stopping device 8-7, a pawl 8-6 and an elastic supporting device 8-8 are sequentially assembled from left to right; the pawl 8-6 is meshed with the ratchet teeth of the ratchet wheel 8-9 arranged on the same horizontal plane for transmission; the front end of the hydraulic piston rod 8-3 is sleeved with a spring sleeve 10 and is in contact with a spring; the air spring device 7 consists of an air spring piston 7-1 and a sealing cylinder 7-2; the air spring piston 7-1, the sealing cylinder 7-2 and the exhaust valve rod 5 are respectively provided with a first sealing ring 7-3 and a second sealing ring 7-4 at the contact positions, and the air spring piston 7-1, the sealing cylinder 7-2 and the exhaust valve rod 5 are connected in a sliding manner. A sealing cylinder 7-2 of the air spring device 7 is fixedly connected with the upper shell 1 through a baffle 6, a sleeve I9 and a sleeve II 11; the sealing cylinder 7-2, the sleeve I9, the ratchet 8-9, the sleeve II 11 and the exhaust valve rod 5 are in sliding connection; the sealing cylinder 7-2, the sleeve I9, the ratchet wheel 8-9 and the sleeve II 11 are in mutual contact, the lower portion of the sleeve II 11 is in contact with the lower shell 2, and the upper shell 1 and the lower shell 2 are fixedly connected through flanges through bolts.
The invention relates to a working method of an exhaust valve applied to a low-speed two-stroke diesel engine, which comprises the following steps:
the method comprises the following steps: the controller 12 sends an electric signal to the electro-hydraulic directional valve 13;
step two: high-pressure oil enters the electro-hydraulic directional valve 13 from the high-pressure oil pipe 14;
step three: the high-pressure oil enters the oil filling pipe 3 through the oil filling port c of the electro-hydraulic reversing valve 13 to push the hydraulic piston 4, the hydraulic piston 4 pushes the exhaust valve rod 5 to move downwards, meanwhile, the high-pressure oil enters the sequence valve 16 through the first oil port d of the electro-hydraulic reversing valve 13 to push the valve core of the sequence valve to move to the main oil channel for communication, a time delay effect is achieved, namely when the exhaust valve rod 5 is pushed by the high-pressure oil, the acting force of the air spring device 7 and the pressure of mixed smoke in the cylinder are overcome, and when the exhaust valve rod moves downwards, oil is fed into the left cavity of the hydraulic cylinder 8-;
step four: when the exhaust valve rod 5 moves downwards, the baffle 6 fixedly connected with the exhaust valve rod drives the air spring piston 7-1 to overcome air resistance and move downwards;
step five: when the valve seat on the exhaust valve rod 5 is separated from the shell, oil is fed into the left cavity of the hydraulic cylinder 8-1 to push the piston 8-2 to move rightwards, so that the hydraulic piston rod 8-3 is driven to move rightwards;
step six: the ratchet bar of the piston rod acts with the ratchet wheel 8-9 to push the ratchet wheel 8-9 to rotate, so that the exhaust valve rod 5 rotates:
step seven: when the hydraulic piston rod 8-3 compresses the spring in the spring sleeve 10 to the limit or the valve rod moves to the bottom dead center, the controller 12 sends a signal to the electro-hydraulic directional valve 13 to change the direction of the high-pressure oil;
step eight: high-pressure oil enters the right cavity of the hydraulic cylinder 8-1 from a second oil port e of the electro-hydraulic directional valve 13, and is released above the exhaust valve rod 5;
step nine: air in the air spring device 7 generates thrust on an air spring piston 7-1, and the air spring piston 7-1 drives the exhaust valve rod 5 to return to the initial position through the baffle 6;
step ten: when the air spring piston 7-1 generates upward thrust on the baffle 6, oil enters the right cavity of the hydraulic cylinder 8-1, the piston 8-2 is pushed to drive the piston rod 8-3 to move leftwards and return to the initial position, low-pressure oil in the left cavity of the hydraulic cylinder 8-1 enters the one-way valve 15 through the first hydraulic oil inlet and outlet 8-4 and finally enters the oil tank 18 from the oil return port f, and at the moment, high-pressure oil enters the oil injection valve 17 from the pressure oil inlet b of the oil injection valve according to oil injection timing to control the opening of the oil injection valve 17.
In the step ten, during the leftward movement of the hydraulic piston rod 8-3, the pawl 8-6 is acted by the upward force of the ratchet and simultaneously acted by the downward force of the elastic supporting device 8-8 with certain elasticity, so that the pawl 8-6 can smoothly move at the top end of the ratchet, the noise generated by vibration is reduced, and the abrasion of the tooth tip caused by vibration is reduced.
By adopting the embodiment but not limited to the mode of the embodiment, the valve rod can be controlled to move circumferentially without influencing the up-and-down movement of the valve rod, so that the carbon deposition of the valve is reduced.
Claims (9)
1. The exhaust valve applied to the low-speed two-stroke diesel engine comprises an upper shell (1) and a lower shell (2) which are connected with each other and an exhaust valve rod (5) which penetrates through the upper shell (1) and the lower shell (2), and is characterized in that a second sleeve (11), a ratchet wheel (8-9), a first sleeve (9), an air spring device (7) and a baffle (6) are sequentially sleeved on the exhaust valve rod (5) which penetrates through one section of the upper shell (1) from bottom to top, a hydraulic piston (4) and a radial blind hole which is connected with an oil filling pipe (3) are arranged at the top of the exhaust valve rod (5), a symmetrical through hole is formed in a shell wall of the upper shell (1) which deviates from the center, and a hydraulic actuating mechanism (8) which is meshed with the ratchet wheel (8-9) is arranged in the symmetrical through hole.
2. The discharge valve according to claim 1, wherein: the hydraulic actuator (8) is composed of a hydraulic cylinder (8-1), a hydraulic piston (8-2), a hydraulic piston rod (8-3), a pawl (8-6), a stop device (8-7) and an elastic supporting device (8-8), wherein the hydraulic cylinder (8-1) is hermetically arranged in one through hole of the symmetrical through hole, the hydraulic piston (8-2) is arranged in the hydraulic cylinder (8-1), a first hydraulic oil inlet (8-4) is formed in the left hydraulic cylinder (8-1) of the hydraulic piston (8-2), and a second hydraulic oil inlet (8-5) is formed in the right hydraulic cylinder (8-1); one end of the hydraulic piston rod (8-3) is connected with the hydraulic piston (8-2), the other end of the hydraulic piston rod is sleeved with a spring sleeve (10), and the spring sleeve (10) is hermetically arranged in the other through hole of the symmetrical through holes; the stopping device (8-7), the pawl (8-6) and the elastic supporting device (8-8) are sequentially arranged on a plane corresponding to the ratchet wheel (8-9) in the middle of the hydraulic piston rod (8-3).
3. The discharge valve according to claim 1, wherein: the air spring device (7) comprises an air spring piston (7-1) and a sealing cylinder (7-2); the piston sealing cylinder (7-2) is a barrel-shaped component with a central hole at the bottom, the air spring piston (7-1) is a disc-shaped component with a central hole, and the air spring piston is hermetically arranged in the piston sealing cylinder (7-2) to move up and down by being sleeved on the exhaust valve rod (5).
4. A discharge valve according to claim 3, characterised in that: a sealing ring II (7-4) is further arranged in a center hole in the bottom of the piston sealing cylinder (7-2), and a sealing ring I (7-3) is further arranged in a center hole of the air spring piston (7-1).
5. The discharge valve according to claim 1, wherein: the ratchet wheels (8-9) are external-meshed single-acting ratchet wheels.
6. The utility model provides a be applied to hydraulic control system of low-speed two-stroke diesel engine discharge valve which characterized in that: the device comprises a controller (12), an electro-hydraulic reversing valve (13), a high-pressure oil pipe (14), an oil tank (18), a one-way valve (15), a sequence valve (16) and an oil injection valve (17); the controller (12) is connected with the electro-hydraulic reversing valve (13) through two conducting wires, one conducting wire is connected to the position above the electro-hydraulic reversing valve (13) from the controller (12), and the other conducting wire is connected to the position below the electro-hydraulic reversing valve (13) from the controller (12); the electro-hydraulic reversing valve (13) is provided with a high-pressure oil inlet a, a pressure oil inlet b of an oil injection valve, an oil injection port c, a first oil port d, a second oil port e and an oil return port f,
the high-pressure oil inlet a is connected with a high-pressure oil pipe (14) through a pipeline;
the pressure oil inlet b of the oil injection valve is connected with an oil injection valve (17) arranged on the cylinder of the low-speed two-stroke diesel engine through a pipeline;
the oil filling port c is connected with an oil filling pipe (3) arranged at the top of the exhaust valve rod (5) through a pipeline;
the first oil port d is connected with the one-way valve (15) and the sequence valve (16) in parallel to a first hydraulic oil inlet and outlet (8-4) of the hydraulic actuating mechanism (8) through pipelines;
the second oil port e is connected with a second hydraulic oil inlet and outlet (8-5) of the hydraulic actuating mechanism (8) through a pipeline; the oil return port f is connected with the oil tank (18) through a pipeline.
7. The hydraulic control system of claim 6, wherein: the controller (12) is Siemens s 7 series, PLC or single chip microcomputer.
8. The hydraulic control system of claim 6, wherein: the electro-hydraulic reversing valve (13) is a pilot type electro-hydraulic four-position six-way reversing valve or an electro-hydraulic four-position six-way reversing valve.
9. The hydraulic control system of claim 6, wherein: the sequence valve (16) is an internal control internal leakage type sequence valve or an internal control external leakage type sequence valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911290090.1A CN111042888B (en) | 2019-12-16 | 2019-12-16 | Exhaust valve applied to low-speed two-stroke diesel engine and hydraulic control system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911290090.1A CN111042888B (en) | 2019-12-16 | 2019-12-16 | Exhaust valve applied to low-speed two-stroke diesel engine and hydraulic control system thereof |
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| CN111042888A true CN111042888A (en) | 2020-04-21 |
| CN111042888B CN111042888B (en) | 2021-08-10 |
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| Application Number | Title | Priority Date | Filing Date |
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB191516598A (en) * | 1915-11-24 | 1916-11-02 | Charles James | Improvements in or connected with the Valves of Internal Combustion Engines. |
| DE3225725A1 (en) * | 1982-07-06 | 1984-01-12 | Gebrüder Sulzer AG, 8401 Winterthur | Device for the intermittent rotation of valves leading into the cylinder space of an internal combustion engine |
| JPS60192817A (en) * | 1984-03-15 | 1985-10-01 | Mitsubishi Heavy Ind Ltd | Hydraulically driven valve operating device |
| CN86107001A (en) * | 1986-10-30 | 1988-05-11 | 国营红阳机械厂 | Multipurpose integrated automatic rotating valve |
| CN2809263Y (en) * | 2005-07-29 | 2006-08-23 | 自贡通达机器制造有限公司 | Hydraulic piston type natural gas compressor |
| JP2006283562A (en) * | 2005-03-31 | 2006-10-19 | Toyota Motor Corp | Valve rotating device for internal combustion engine |
| CN1961137A (en) * | 2004-04-27 | 2007-05-09 | 米尔基希斯沃克有限责任公司 | Valve rotating mechanism for exhaust valves, especially for marine diesel engines |
| CN101111665A (en) * | 2005-02-02 | 2008-01-23 | 曼狄赛尔公司 | Macrotype double ram stroke diesel engine with hydraulic actuating exhaust valve |
| CN104343485A (en) * | 2013-08-08 | 2015-02-11 | 曼柴油机和涡轮机欧洲股份公司 | Gas exchange valve with valve rotating device |
| CN106939808A (en) * | 2017-04-26 | 2017-07-11 | 哈尔滨工程大学 | A kind of discharge valve apparatus with hydraulic pressure stopcock device applied to low-speed diesel engine |
| CN207161166U (en) * | 2017-08-11 | 2018-03-30 | 东风康明斯发动机有限公司 | A kind of engine valve structure that can be rotated |
-
2019
- 2019-12-16 CN CN201911290090.1A patent/CN111042888B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB191516598A (en) * | 1915-11-24 | 1916-11-02 | Charles James | Improvements in or connected with the Valves of Internal Combustion Engines. |
| DE3225725A1 (en) * | 1982-07-06 | 1984-01-12 | Gebrüder Sulzer AG, 8401 Winterthur | Device for the intermittent rotation of valves leading into the cylinder space of an internal combustion engine |
| JPS60192817A (en) * | 1984-03-15 | 1985-10-01 | Mitsubishi Heavy Ind Ltd | Hydraulically driven valve operating device |
| CN86107001A (en) * | 1986-10-30 | 1988-05-11 | 国营红阳机械厂 | Multipurpose integrated automatic rotating valve |
| CN1961137A (en) * | 2004-04-27 | 2007-05-09 | 米尔基希斯沃克有限责任公司 | Valve rotating mechanism for exhaust valves, especially for marine diesel engines |
| CN101111665A (en) * | 2005-02-02 | 2008-01-23 | 曼狄赛尔公司 | Macrotype double ram stroke diesel engine with hydraulic actuating exhaust valve |
| JP2006283562A (en) * | 2005-03-31 | 2006-10-19 | Toyota Motor Corp | Valve rotating device for internal combustion engine |
| CN2809263Y (en) * | 2005-07-29 | 2006-08-23 | 自贡通达机器制造有限公司 | Hydraulic piston type natural gas compressor |
| CN104343485A (en) * | 2013-08-08 | 2015-02-11 | 曼柴油机和涡轮机欧洲股份公司 | Gas exchange valve with valve rotating device |
| CN106939808A (en) * | 2017-04-26 | 2017-07-11 | 哈尔滨工程大学 | A kind of discharge valve apparatus with hydraulic pressure stopcock device applied to low-speed diesel engine |
| CN207161166U (en) * | 2017-08-11 | 2018-03-30 | 东风康明斯发动机有限公司 | A kind of engine valve structure that can be rotated |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111042888B (en) | 2021-08-10 |
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