CN104406776B - Cylinder head test valve position seals structure - Google Patents
Cylinder head test valve position seals structure Download PDFInfo
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- CN104406776B CN104406776B CN201410550352.4A CN201410550352A CN104406776B CN 104406776 B CN104406776 B CN 104406776B CN 201410550352 A CN201410550352 A CN 201410550352A CN 104406776 B CN104406776 B CN 104406776B
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- cylinder head
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Abstract
The present invention provides cylinder head test valve position to seal structure, is mainly made up of valve assembly, cone seal body, rubber seal and cylinder head；Described valve assembly and cylinder head valve position directly use final assembly structure；Cone seal body is arranged between the valve bottom of cylinder head and valve assembly, and described cone seal body big end lateral surface is provided with ring of cylinder head seal groove, arranges rubber seal in it；Cone seal body small end endoporus top is provided with valve stem seal groove, arranges rubber seal in it.The positive effect of the present invention is: valve assembly uses final assembly structure, and composite rigidity is consistent, and under test load effect, harmony is good, and load distribution is reasonable, and functional reliability is high；Cone seal body uses the radial seal mode of the combination of inner and outside, and using valve-seat bore as hole, location, on the basis of ensureing that cylinder inner high voltage is oil-tightening, the most slightly slided when not only ensure that valve retainer position stability under loading but also met valve stress needs.
Description
Technical field
The invention belongs to cylinder head technical field of sealing technology, especially relate to a kind of cylinder head test valve position
Seal structure.
Background technology
Cylinder head, as the building block of engine chamber, subjects the cycle of high temperature, high pressure in work
Property effect, its structural strength and fatigue reliability are most important.Particularly cylinder head fire power face is in actual work
Work bears the continuous impact of gas high-temperature, high pressure, and (such as overload, hypervelocity) during non-normal working
Under super large load effect after strengthening with complete machine, valve ridge area, airway walls, top board etc. there will be cracking
Failure of removal.Cylinder head sub-assembly mechanical fatigue test is for verifying and assessing the effective of its structural reliability
Method.
In prior art, fatigue test uses the method for hydraulic analog in-cylinder pressure period effects to test
Cylinder head applies mechanical load.Wherein, the hydraulic packing for valve position uses the additional O of nonstandard valve
The mode of type rubber seal, its simple in construction, easy for installation, seal reliable.But, nonstandard valve
The former machine ring of cylinder head basic structure form of seal break-off, changes the valve active force side to cylinder cap
To, valve and cylinder head rigid contact, valve exit flow field, relative to distortion, reduces Structural Reliability Evaluation
Accuracy and Feasible degree.
Summary of the invention
The problem to be solved in the present invention is to provide a kind of accuracy cylinder head high, simple in construction of testing and tests
Valve position seals structure.
For solving above-mentioned technical problem, the technical solution used in the present invention is:
Cylinder head test valve position seals structure, mainly close by valve assembly, cone seal body, rubber
Seal and cylinder head composition；
Described valve assembly and cylinder head valve position directly use final assembly structure；
Described cone seal body is arranged between the valve bottom of cylinder head and valve assembly, cone seal body
The internal diameter taper seat of big end is identical with the Dimension of Saddle Ring of valve, in order to ensure and contacting between valve；
Described cone seal body big end lateral surface is provided with ring of cylinder head seal groove, arranges rubber seal in it
Circle, it is achieved the high pressure sealing at ring of cylinder head；It is close that cone seal body small end endoporus top is provided with valve stem
Sealing groove, arranges rubber seal in it, it is ensured that the sealing between itself and engine valve stem.
Further, the inboard land of described ring of cylinder head seal groove and valve stem seal groove is that transition is joined
Closing, outside land is transmission and the rubber seal rings for seal of matched in clearance, beneficially power.
Further, the inner chamber top valve stem seal groove lower position of described cone seal body is provided with and tears open
Dress screw thread.
Further, the diameter of section of the rubber seal in described ring of cylinder head seal groove is φ
2.65。
Further, the diameter of section of the rubber seal in described valve stem seal groove is φ 3.55.
Further, described valve assembly includes being assembled together successively valve, valve spring, spring
Dish, valve collet.
The present invention has the advantage that with good effect:
Valve assembly uses final assembly structure, and composite rigidity is consistent, and under test load effect, harmony is good,
Load distribution is reasonable, and functional reliability is high；
Cone seal body is consistent with complete machine with valve contacts mode, and the direction of valve exit flow field obtains true mould
Intending, test load simulation confidence level is high；
Cone seal body uses the radial seal mode of the combination of inner and outside, and using valve-seat bore as hole, location,
On the basis of ensureing that cylinder inner high voltage is oil-tightening, not only ensure that valve retainer position stability under loading but also meet
The most slightly slide during valve stress needs, embodies the percussion to cylinder head, makes stress truer；
And compact conformation, seal hidden, simple in construction, dismounting scheme, nonstandard quantity are few, low cost.
Accompanying drawing explanation
Fig. 1 is the sectional view of the present invention；
Fig. 2 is the partial enlarged drawing of Fig. 1 of the present invention.
In figure:
1-exhaust valve assemblies 2-intake valve assembly 3-inlet valve cone seal body 4-exhaust valve cone seal body 5-
Cylinder head 6-valve stem seal groove 7-ring of cylinder head seal groove
Detailed description of the invention
Below in conjunction with the accompanying drawings the specific embodiment of the present invention is elaborated.
Cylinder head test valve position seals structure, as it is shown in figure 1, mainly close by valve assembly, taper
Feng Ti, rubber seal and cylinder head 5 form；
Described valve assembly and cylinder head valve position directly use final assembly structure, the present embodiment valve
Valve that assembly includes being assembled together successively, valve spring, spring holder, valve collet etc.；Valve group
Part is divided into exhaust valve assemblies 1 and intake valve assembly 2, be separately mounted to cylinder head 5 exhaust valve position and
Inlet valve position；
Described cone seal body is arranged between the valve bottom of cylinder head 5 and valve assembly, cone seal
The external diameter of the big end of body is identical with the Dimension of Saddle Ring of valve with internal diameter taper seat, in order to ensure and connecing between valve
Touch；Cone seal body is divided into inlet valve cone seal body 3 and exhaust valve cone seal body 4, respectively with enter
Valve and exhaust valve coordinate, and its difference is that the diameter sealing position due to valve seating is different, thus adapts to
The difference of the structure size of inlet and outlet door；
Described cone seal body big end lateral surface is provided with ring of cylinder head seal groove 7, arranges rubber close in it
Seal, uses the method for radial seal to realize the high pressure sealing at the seat ring of cylinder head 5；Cone seal body
Small end endoporus top is provided with valve stem seal groove 6, arranges rubber seal in it, and same employing is the closeest
The method of envelope ensures the sealing between itself and engine valve stem；
Transition and gap is used between cone seal body and valve seat of cylinder head hole described in one embodiment of the invention
Dual cooperation, as in figure 2 it is shown, described ring of cylinder head seal groove 7 and the inboard of valve stem seal groove 6
Land is interference fits, and outside land is transmission and the rubber seal rings for seal of matched in clearance, beneficially power.
One embodiment of the invention for the ease of the disassembling, assembling and replacing of cone seal body, described cone seal body interior
Top, chamber valve stem seal groove 6 lower position is provided with dismounting screw thread, leading by valve guide bushing during dismounting
Make active force obtain uniform distribution at bore to effect, complete installation and the dismounting of seal.
Due to size limitation at one embodiment of the invention ring of cylinder head, described ring of cylinder head seal groove 7
The diameter of section of interior rubber seal is φ 2.65；Rubber seal in described valve stem seal groove 6
Diameter of section be φ 3.55, it is simple to valve stem seal groove 6 processing and the installation of rubber seal.
During test simulate gas pressure hydraulic oil from the direction of arrow shown in Fig. 1 to cylinder head 5 and valve seating
Circle pressure.The mode using final assembly valve assembly to combine with cone seal body structure, simulates gas
Cylinder head is taken a seat power effect by door, and cone seal body uses the radial seal mode of the combination of inner and outside, and with
Valve-seat bore, as hole, location, on the basis of ensureing that cylinder inner high voltage is oil-tightening, both ensure that valve
Seat ring position stability under loading the most slightly slides when meeting again valve stress needs, embodies cylinder head
The percussion of 5, cylinder head 5 stress verity is high, it is ensured that the positive sealing under trystate, from
And improve test credibility.
Above embodiments of the invention are described in detail, but described content has been only the preferable of the present invention
Embodiment, it is impossible to be considered the practical range for limiting the present invention.All made according to the present patent application scope
Impartial change and improvement etc., within all should still belonging to the patent covering scope of the present invention.
Claims (6)
1. cylinder head test valve position seals structure, it is characterised in that: main by valve assembly, cone
Shape seal, rubber seal and cylinder head composition；
Described valve assembly and cylinder head valve position directly use final assembly structure；
Described cone seal body is arranged between the valve bottom of cylinder head and valve assembly, cone seal body
The internal diameter taper seat of big end is identical with the Dimension of Saddle Ring of valve, in order to ensure and contacting between valve；
Described cone seal body big end lateral surface is provided with ring of cylinder head seal groove, arranges rubber seal in it
Circle, it is achieved the high pressure sealing at ring of cylinder head；It is close that cone seal body small end endoporus top is provided with valve stem
Sealing groove, arranges rubber seal in it, it is ensured that the sealing between itself and engine valve stem.
Cylinder head the most according to claim 1 test valve position seals structure, it is characterised in that:
The inboard land of described ring of cylinder head seal groove and valve stem seal groove is interference fits, and outside land is
The transmission of matched in clearance, beneficially power and rubber seal rings for seal.
Cylinder head the most according to claim 1 and 2 test valve position seals structure, its feature
It is: the inner chamber top valve stem seal groove lower position of described cone seal body is provided with dismounting screw thread.
Cylinder head the most according to claim 3 test valve position seals structure, it is characterised in that:
The diameter of section of the rubber seal in described ring of cylinder head seal groove is φ 2.65.
Cylinder head the most according to claim 3 test valve position seals structure, it is characterised in that:
The diameter of section of the rubber seal in described valve stem seal groove is φ 3.55.
Cylinder head the most according to claim 1 and 2 test valve position seals structure, its feature
It is: valve that described valve assembly includes being assembled together successively, valve spring, spring holder, valve
Locker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410550352.4A CN104406776B (en) | 2014-10-16 | 2014-10-16 | Cylinder head test valve position seals structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410550352.4A CN104406776B (en) | 2014-10-16 | 2014-10-16 | Cylinder head test valve position seals structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104406776A CN104406776A (en) | 2015-03-11 |
| CN104406776B true CN104406776B (en) | 2016-08-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410550352.4A Active CN104406776B (en) | 2014-10-16 | 2014-10-16 | Cylinder head test valve position seals structure |
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| CN (1) | CN104406776B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105628307B (en) * | 2015-12-24 | 2018-12-07 | 江苏金通灵流体机械科技股份有限公司 | A kind of outer circle sealing device and its baffle for guard seal |
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2014
- 2014-10-16 CN CN201410550352.4A patent/CN104406776B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN104406776A (en) | 2015-03-11 |
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