CN206668353U - A kind of discharge valve apparatus with hydraulic pressure stopcock device applied to low-speed diesel engine - Google Patents
A kind of discharge valve apparatus with hydraulic pressure stopcock device applied to low-speed diesel engine Download PDFInfo
- Publication number
- CN206668353U CN206668353U CN201720448243.0U CN201720448243U CN206668353U CN 206668353 U CN206668353 U CN 206668353U CN 201720448243 U CN201720448243 U CN 201720448243U CN 206668353 U CN206668353 U CN 206668353U
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- China
- Prior art keywords
- valve
- oil
- stopcock device
- pump housing
- circuit
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Abstract
The purpose of this utility model is to provide a kind of discharge valve apparatus with hydraulic pressure stopcock device applied to low-speed diesel engine, including exhaust valve portion, air bleeding valve control section；Being vented valve portion includes cylinder cover, valve seat, air bleeding valve valve disc, valve rod, stopcock device, air bleeding valve control section includes the pump housing, valve opening servo oil circuit, valve opening oil return circuit, pass valve servo oil circuit, pass valve oil return circuit, is more uniformly applied to the hydraulic pressure discharge valve apparatus of low-speed diesel engine by rotating the carbon distribution reduced on valve face and valve seat, valve disc is heated and is radiated.The open and close of air valve are realized by hydraulic coupling, drives stopcock device intra vane to realize that air valve rotates by hydraulic coupling when air valve is opened, removes air valve valve face and the carbon distribution on valve seat；When air valve is closed, realize that air bleeding valve is flexible by the throttling action of choke valve and close, reduce air valve and hit.
Description
Technical field
The utility model relates to the air bleeding valve of a kind of diesel engine, specifically diesel engine.
Background technology
Air bleeding valve and its system are the important components of Marine Low-Speed Two-Stroke Diesel Engines, by controlling beating for air bleeding valve
The open and close control to realize to diesel engine breathing action.The quality of discharge valve apparatus work directly affects changing for diesel engine
Makings amount, and then influence the acting ability of diesel engine.Wherein, hydraulic pressure discharge valve apparatus because its size is small, noise is low, air valve not by
Side-thrust, it is easy to many advantages, such as arrangement and convenient disassembly and is widely used on low-speed diesel engine.
Hydraulic pressure air bleeding valve valve opening leans on oil pressure caused by fluid drive, and the gas force for closing valve by air spring is realized, although
Above lot of advantages be present, but there is debugging with sealing the defects of difficult, the leakage of air spring gas often occur causes
The situation that air valve fits badly.
In addition, carbon deposition phenomenon occurs at air valve, also result in air valve and be not closed completely.To solve the above problems, now
Low-speed diesel engine mostly equipped with rotor by exhaust airstream come realize rotation, it is simple and convenient.But this turn by air-flow
Wing mechanism, underload effect is bad, and when valve train quality is big, effect is also bad.
The content of the invention
The purpose of this utility model, which is to provide, can realize that flexibility is closed and can reduce valve face and the product on valve seat
Carbon, valve disc is set uniformly to receive heat and a kind of discharge valve apparatus with hydraulic pressure stopcock device applied to low-speed diesel engine of radiating.
What the purpose of this utility model was realized in：
A kind of discharge valve apparatus with hydraulic pressure stopcock device applied to low-speed diesel engine of the utility model, it is characterized in that：Bag
Include exhaust valve portion, air bleeding valve control section；
Being vented valve portion includes cylinder cover, valve seat, air bleeding valve valve disc, valve rod, stopcock device, and valve seat is arranged on cylinder cover
Lower end, valve rod connection air bleeding valve valve disc simultaneously be arranged in cylinder cover, set respectively on cylinder cover cylinder cover fuel feed hole and
Cylinder cover oil outlet, installs sealing block, stopcock device, lower sealing block in cylinder cover successively from top to bottom, upper sealing block and
Lower sealing block is interference fitted with cylinder cover respectively, and valve rod sequentially passes through sealing block, stopcock device, lower sealing block, and and stopcock
Device is fixedly linked, and upper annular seal space is formed between stopcock device and upper sealing block, and lower annular seal space is formed between stopcock device and lower sealing block,
Stopcock device includes stopcock device housing, central shaft, and central shaft is located in stopcock device housing, and central shaft is equipped with blade, stopcock device housing
It is upper that stopcock device fuel feed hole and stopcock device oil outlet are set, oil groove, position and the stopcock device oil outlet of oil groove are provided with cylinder cover
Position it is corresponding, cylinder cover fuel feed hole is corresponding with the position of stopcock device fuel feed hole；
Air bleeding valve control section includes the pump housing, valve opening servo oil circuit, valve opening oil return circuit, pass valve servo oil circuit, pass valve and returned
Oil circuit, plunger, push rod, roller, push rod upper end connection plunger, push rod lower end connection roller, the lower section of roller are set in the pump housing
Cam is set, and pump housing side sets the fuel feed hole of the pump housing first, the fuel feed hole of the pump housing second, the oil outlet of the pump housing first respectively, on the pump housing
End sets the oil outlet of the pump housing second, and valve opening servo oil circuit is respectively communicated with the oil outlet of the pump housing first and cylinder cover fuel feed hole, valve opening
Oil return circuit, which is respectively communicated with, closes valve servo oil circuit and crankcase, closes the valve servo oil circuit connection oil outlet of the pump housing second and cylinder cover
Oil outlet, close valve oil return circuit be respectively communicated with crankcase and valve opening servo oil circuit, set in valve opening servo oil circuit the first check valve,
Second check valve, the first check valve are located at pump housing oil outlet, and the second check valve is located at valve opening servo oil circuit with closing valve oil return oil
Road connectivity part, the first 2/2-way reversal valve is set on valve opening oil return circuit, closes and the 3rd check valve, the is set in valve servo oil circuit
Four check valves, the 3rd check valve are located at the oil outlet of the pump housing second, and the 4th check valve is positioned at pass valve servo oil circuit and valve opening oil return
At oil communication, valve opening oil return circuit passes through the pass between the first 2/2-way reversal valve and the 3rd check valve and the 4th check valve
Valve servo oil circuit communicates, and closes and the second 2/2-way reversal valve and choke valve are set on valve oil return circuit, closes valve oil return circuit and passes through
Second 2/2-way reversal valve communicates with the valve opening servo oil circuit between the first check valve and the second check valve.
The utility model can also include：
1st, chamber and upper annular seal space between the leaf of described oil groove connection stopcock device blade, the width of oil groove is 1mm.
2nd, the distance between blade and stopcock device housing are 0.05mm.
3rd, cam from basic circle direction rotation apicad be upward stroke when, plunger close the fuel feed hole of the pump housing first, work as the pump housing
Intracavitary oil pressure be more than the first check valve initial tension of spring when, fluid through valve opening servo oil circuit enter stopcock device blade leaf between
Chamber, blade rotation rotate with ovable valve stem simultaneously, and interlobate fluid flows to upper annular seal space through stopcock device oil outlet, oil groove, promotes
Stopcock device and valve rod are descending, and cylinder cover fuel feed hole communicates with upper annular seal space, and the first 2/2-way reversal valve is in normally opened position, under
The fluid of annular seal space is through the first normally opened bit stream of 2/2-way reversal valve to crankcase；As cam continuation is up, the pump housing first goes out
Oilhole is closed, and when the fluid oil pressure among plunger and hydraulic piston is more than the 3rd one-way valve spring pretightning force, fluid is watched through closing valve
Take oil circuit and enter lower annular seal space, promotion stopcock device is up, and the second 2/2-way reversal valve is in normally opened position, the fluid of upper annular seal space
Crankcase is flowed to through cylinder cover fuel feed hole, the normally opened position of the second 2/2-way reversal valve, choke valve, air bleeding valve valve disc resets.
Advantage of the present utility model is：The utility model realizes the flexibility of air bleeding valve by the choke valve in hydraulic circuit
Close, instead of air spring, overcome the drawbacks of air spring often causes air valve to fit badly due to air leakage, avoid
The rigid impact of air bleeding valve and valve seat, extend air bleeding valve service life, more securely and reliably.
The utility model can realize that air bleeding valve rotates by hydraulic-driven before exhaust valve opening in very short time, can
To reduce valve face and the carbon distribution on valve seat, reduce abrasion, fitting is tight, and valve disc can also be made equably to receive heat and dissipate
Heat, to improve the thermal stress state of valve disc.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is stopcock device sectional view of the present utility model.
Embodiment
Illustrate below in conjunction with the accompanying drawings and the utility model is described in more detail：
With reference to Fig. 1-2, the utility model mainly includes exhaust valve portion and air bleeding valve control section；Exhaust valve portion includes
Close upper envelope block 12, stopcock device 13, lower sealing block 14, air bleeding valve valve disc 16, air discharging valve bar 17, exhaust valve base 18, cylinder head
Body 15；Air bleeding valve control section mainly includes cam 1, roller 2, push rod 3, plunger 4, the pump housing 21, valve opening servo oil circuit L, pass valve
Servo oil circuit N, oil return circuit M, oil return circuit O, oil-feed oil circuit P.Stopcock device 13 is housed, stopcock device fastens with valve rod on valve rod 17
Connection, and interference fits of cylinder cover 15, by the rotation of stopcock device during valve opening, air valve carbon distribution is removed, air valve carbon distribution is solved and leads
The problem of causing air valve to be not closed completely.Sealing block 12 and sealing block 14, sealing block 12 and sealing block 14 and cylinder are housed on valve rod 17
Lid 15 is interference fitted, and is flexibly connected with valve rod 17, and valve rod 17 can be in the interstitial hole of sealing block 12 and sealing block 14 up and down
It is mobile.Oil groove I is provided with cylinder cover, oil groove I width is 1mm, not destroy cylinder cover structure as far as possible, its main function
It is to connect the sealing space between the leaf of stopcock device 13 between chamber and stopcock device 13 and sealing block 12.There are two lists in valve opening servo oil circuit L
To valve 5 and 10, check valve 5 hands over fork close to oil outlet C, check valve 10 close to valve opening servo oil circuit L and oil return line M；Valve is closed to watch
Taking on oil circuit N has two check valves 6 and 7, and check valve 6 is close to oil outlet D, and check valve 7 is close to pass valve servo oil circuit N and oil return line
O hands over fork.Oil return circuit M leads to crankcase 8, there is hydraulic control 2/2-way reversal valve 11 and one-way throttle on oil return circuit M successively
Valve 9, the control fluid of hydraulic control 2/2-way reversal valve 11 is from the front end of check valve 10；Oil return circuit O leads to crankcase 8, returns
There is hydraulic control 2/2-way reversal valve 20 on oil circuit O, hydraulic control 2/2-way reversal valve 20 controls fluid from the front end of check valve 7.
Hydraulic pressure stopcock device 13 is in round pie, is divided into upper-lower casing, central hollow, four blades is housed along central shaft, length of blade is less than
Housing inner diameter 0.05mm, after installation, 0.05mm gaps are only left between blade and housing, can be rotated when by hydraulic coupling.
There are fuel feed hole and oil outlet on hydraulic pressure stopcock device, be used for into, oil extraction.In addition, it is provided with draining oil circuit on hydraulic pressure stopcock device lower house
Q, towards oil groove I, chamber is low-pressure area between making connection draining oil circuit Q leaf.
Camshaft band moving cam 1 rotates, and when cam 1 rotates from summit to basic circle, roller 2, push rod 3 and plunger 4 are with convex
Take turns 1 descending, the fluid from cross lubrication system enters in plunger pump along in-line P through fuel feed hole A.When cam 1 is from basic circle
When direction rotation apicad is upward stroke, since plunger closes fuel feed hole A, oil pressure rises, when oil pressure is more than list in pump chamber
To valve 5 initial tension of spring when, fluid through oil outlet C through check valve 5, check valve 10, fuel feed hole E, stopcock device fuel feed hole J enter
Chamber between stopcock device leaf, cavity pressure raises between the leaf of oil-feed, and is in low pressure by chamber between draining oil circuit Q and the leaf of oil groove I connections,
So as to promote blade 23 to rotate, air valve rotation is driven.Interlobate fluid wait go to communicated with oil outlet K when, through oil outlet K,
Oil groove I flows to the sealing space of stopcock device 13 and sealing block 12, promotes stopcock device 13 descending, while valve rod 17 is descending together.Enter
Oilhole E no longer connects with stopcock device fuel feed hole J, and the sealing space for becoming fuel feed hole E with sealing block 12 and stopcock device 13 communicates, liquid
Force feed promotes stopcock device 13 descending with ovable valve stem 17, due to not having fluid before check valve 7, so now hydraulic pressure 2/2-way commutates
Valve 20 is in normally opened position, and the fluid of stopcock device 13 and the sealing space of sealing block 14 is through 20 normally opened bit stream of hydraulic pressure 2/2-way reversal valve
To crankcase 8, air bleeding valve is opened during this.As cam 1 continues up, oil outlet C is closed, among plunger and hydraulic piston
Fluid oil pressure continue to rise, when oil pressure is more than 6 initial tension of spring of check valve, fluid is through check valve 6, check valve 7, fuel feed hole
F enters the sealing space of stopcock device 13 and sealing block 14, promotes stopcock device 13 up, due to there is no fluid before check valve 10, institute
Normally opened position is in now hydraulic pressure 2/2-way reversal valve 11, the fluid among sealing block 12 and stopcock device 13 is through oilhole E, hydraulic control
11 normally opened position of 2/2-way reversal valve, choke valve 9 flow to crankcase 8, and due to the throttling action of choke valve, this event exhaust valve delays
It is slow up, air valve rigid impact is reduced, when stopcock device 13 moves to oilhole E and oilhole J is communicated, air bleeding valve is closed just.Connect
Get off, cam 1 is descending, carries out exhaust valve opening next time and closing.
Claims (5)
1. a kind of discharge valve apparatus with hydraulic pressure stopcock device applied to low-speed diesel engine, it is characterized in that：Including exhaust valve portion,
Air bleeding valve control section；
Being vented valve portion includes cylinder cover, valve seat, air bleeding valve valve disc, valve rod, stopcock device, and valve seat is arranged under cylinder cover
End, valve rod connection air bleeding valve valve disc are simultaneously arranged in cylinder cover, set cylinder cover fuel feed hole gentle on cylinder cover respectively
Cylinder body oil outlet, installs sealing block, stopcock device, lower sealing block in cylinder cover successively from top to bottom, upper sealing block and under
Sealing block is interference fitted with cylinder cover respectively, and valve rod sequentially passes through sealing block, stopcock device, lower sealing block, and with stopcock device
It is fixedly linked, upper annular seal space is formed between stopcock device and upper sealing block, lower annular seal space, rotation is formed between stopcock device and lower sealing block
Valve device includes stopcock device housing, central shaft, and central shaft is located in stopcock device housing, and central shaft is equipped with blade, on stopcock device housing
Stopcock device fuel feed hole and stopcock device oil outlet are set, oil groove, position and the stopcock device oil outlet of oil groove are provided with cylinder cover
Position is corresponding, and cylinder cover fuel feed hole is corresponding with the position of stopcock device fuel feed hole；
Air bleeding valve control section includes the pump housing, valve opening servo oil circuit, valve opening oil return circuit, pass valve servo oil circuit, pass valve oil return oil
Road, plunger, push rod, roller are set, and push rod upper end connection plunger, push rod lower end connection roller, the lower section of roller is set in the pump housing
Cam, pump housing side set the fuel feed hole of the pump housing first, the fuel feed hole of the pump housing second, the oil outlet of the pump housing first respectively, and pump housing upper end is set
The oil outlet of the pump housing second is put, valve opening servo oil circuit is respectively communicated with the oil outlet of the pump housing first and cylinder cover fuel feed hole, valve opening oil return
Oil circuit, which is respectively communicated with, closes valve servo oil circuit and crankcase, closes the valve servo oil circuit connection oil outlet of the pump housing second and cylinder cover is fuel-displaced
Hole, close valve oil return circuit and be respectively communicated with crankcase and valve opening servo oil circuit, the first check valve, second are set in valve opening servo oil circuit
Check valve, the first check valve are located at pump housing oil outlet, and the second check valve is located at valve opening servo oil circuit and connected with closing valve oil return circuit
It is logical to locate, the first 2/2-way reversal valve is set on valve opening oil return circuit, closes and the 3rd check valve, the 4th list is set in valve servo oil circuit
To valve, the 3rd check valve is located at the oil outlet of the pump housing second, and the 4th check valve is positioned at pass valve servo oil circuit and valve opening oil return circuit
Connectivity part, valve opening oil return circuit are watched by the pass valve between the first 2/2-way reversal valve and the 3rd check valve and the 4th check valve
Take oil circuit to communicate, close and the second 2/2-way reversal valve and choke valve are set on valve oil return circuit, close valve oil return circuit and pass through second
Valve opening servo oil circuit between 2/2-way reversal valve and the first check valve and the second check valve communicates.
2. a kind of discharge valve apparatus with hydraulic pressure stopcock device applied to low-speed diesel engine according to claim 1, it is special
Sign is：Chamber and upper annular seal space between the leaf of described oil groove connection stopcock device blade, the width of oil groove is 1mm.
3. a kind of discharge valve apparatus with hydraulic pressure stopcock device applied to low-speed diesel engine according to claim 1 or 2, its
It is characterized in：The distance between blade and stopcock device housing are 0.05mm.
4. a kind of discharge valve apparatus with hydraulic pressure stopcock device applied to low-speed diesel engine according to claim 1 or 2, its
It is characterized in：Cam from basic circle direction rotation apicad be upward stroke when, plunger close the fuel feed hole of the pump housing first, when the chamber of the pump housing
Interior oil pressure be more than the first check valve initial tension of spring when, fluid through valve opening servo oil circuit enter stopcock device blade leaf between chamber,
Blade rotation rotates with ovable valve stem simultaneously, and interlobate fluid flows to upper annular seal space through stopcock device oil outlet, oil groove, promotes stopcock
Device and valve rod are descending, and cylinder cover fuel feed hole communicates with upper annular seal space, and the first 2/2-way reversal valve is in normally opened position, lower sealing
The fluid of chamber is through the first normally opened bit stream of 2/2-way reversal valve to crankcase；As cam continues up, the oil outlet of the pump housing first
Close, when the fluid oil pressure among plunger and hydraulic piston is more than the 3rd one-way valve spring pretightning force, fluid is through closing valve servo oil
Road enters lower annular seal space, and promotion stopcock device is up, and the second 2/2-way reversal valve is in normally opened position, and the fluid of upper annular seal space is through gas
Cylinder body fuel feed hole, the normally opened position of the second 2/2-way reversal valve, choke valve flow to crankcase, and air bleeding valve valve disc resets.
5. a kind of discharge valve apparatus with hydraulic pressure stopcock device applied to low-speed diesel engine according to claim 3, it is special
Sign is：Cam from basic circle direction rotation apicad be upward stroke when, plunger close the fuel feed hole of the pump housing first, when the intracavitary of the pump housing
Oil pressure be more than the first check valve initial tension of spring when, fluid through valve opening servo oil circuit enter stopcock device blade leaf between chamber, leaf
Piece rotation rotates with ovable valve stem simultaneously, and interlobate fluid flows to upper annular seal space through stopcock device oil outlet, oil groove, promotes stopcock device
Descending with valve rod, cylinder cover fuel feed hole communicates with upper annular seal space, and the first 2/2-way reversal valve is in normally opened position, lower annular seal space
Fluid through the first normally opened bit stream of 2/2-way reversal valve to crankcase；As cam continues up, the oil outlet of the pump housing first pass
Close, when the fluid oil pressure among plunger and hydraulic piston is more than the 3rd one-way valve spring pretightning force, fluid is through closing valve servo oil circuit
Into lower annular seal space, promotion stopcock device is up, and the second 2/2-way reversal valve is in normally opened position, and the fluid of upper annular seal space is through cylinder
Lid fuel feed hole, the normally opened position of the second 2/2-way reversal valve, choke valve flow to crankcase, and air bleeding valve valve disc resets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720448243.0U CN206668353U (en) | 2017-04-26 | 2017-04-26 | A kind of discharge valve apparatus with hydraulic pressure stopcock device applied to low-speed diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720448243.0U CN206668353U (en) | 2017-04-26 | 2017-04-26 | A kind of discharge valve apparatus with hydraulic pressure stopcock device applied to low-speed diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206668353U true CN206668353U (en) | 2017-11-24 |
Family
ID=60370872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720448243.0U Withdrawn - After Issue CN206668353U (en) | 2017-04-26 | 2017-04-26 | A kind of discharge valve apparatus with hydraulic pressure stopcock device applied to low-speed diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206668353U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2017
- 2017-04-26 CN CN201720448243.0U patent/CN206668353U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN106939808B (en) * | 2017-04-26 | 2023-06-02 | 哈尔滨工程大学 | Exhaust valve device with hydraulic rotary valve device applied to low-speed diesel engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20171124 Effective date of abandoning: 20230602 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20171124 Effective date of abandoning: 20230602 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |