CN205503209U - Automatically cleaning formula is towards sodium valve with branch fluid channel - Google Patents
Automatically cleaning formula is towards sodium valve with branch fluid channel Download PDFInfo
- Publication number
- CN205503209U CN205503209U CN201520912011.7U CN201520912011U CN205503209U CN 205503209 U CN205503209 U CN 205503209U CN 201520912011 U CN201520912011 U CN 201520912011U CN 205503209 U CN205503209 U CN 205503209U
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- CN
- China
- Prior art keywords
- valve
- sodium
- rushes
- branch flow
- flow passage
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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Abstract
The utility model discloses an automatically cleaning formula is towards sodium valve with branch fluid channel, the valve stem inside along its axial be equipped with cylindrical pole portion towards the sodium chamber and with this pole portion towards sodium chamber intercommunication and a plurality of branch fluid channel of distributing along the valve stem axial, branch fluid channel's length shortens along the orientation of keeping away from the valve head gradually, and what this automatically cleaning formula is towards sodium valve with branch fluid channel can be better walks valve neck and the heat conduction that valve head end face centre located to gather to it is even to make the valve heat dissipation.
Description
Technical field
This utility model relates to engine component field, and a kind of self-cleaning with branch flow passage rushes sodium valve.
Background technology
Conventional gasoline engine exhaust door is to use solid exhaust valve, and the processes such as exhaust valve head uses resistant to elevated temperatures austenite material, and bar portion uses martensitic material, the most welded, surface process form.This structure, the exhaust valve of technique only can be used in delivery temperature less than on the natural aspiration petrol engine of 750 DEG C.In engine with supercharger, owing to employing compression air induction (specifically having turbocharging, engine driven supercharging and double supercharging), making the burning explosion pressure in cylinder higher than during natural aspiration, the temperature in cylinder is also high than during natural aspiration, thus the temperature of exhaust valve raises accordingly.The temperature of Gu Paiqimenchu often exceeds the allowable temperature of material for exhaust valves, thus reduces exhaust valve service life, reduces heat dispersion.In order to solve this problem, people form a cavity in the engine valve stem boring of exhaust valve, the fusing point of metallic sodium is 97.81 DEG C, on the premise of rational cavity volume, when valve operation, temperature raises quickly, metallic sodium is become liquid when high temperature from solid-state, move up and down in cavity and constantly wash away valve face and valve stem, the thermic load of valve face end is effectively delivered to valve stem, then by the water channel cooling exhaust valve of cylinder cap, improve the thermal diffusivity of exhaust valve, effectively reduce the thermic load of valve face, additionally, the proportion of metallic sodium is less, the total quality of valve diminishes, and the rigidity of valve becomes strong, under equal conditions, the deflection of valve is little；But the exhaust valve that existing hollow fills sodium structure has a problem in that the heat of air valve cervix and valve end surface center is not easy to be conducted away smoothly, it is the position assembled of temperature, the heat dissipation uniformity of exhaust valve can be affected, reduce the exhaust valve life-span.
Therefore, for solving problem above, need a kind of can preferably being conducted away by the heat that air valve cervix and valve end surface center gather, so that the self-cleaning that head portion that heat radiation has branch flow passage uniformly rushes sodium valve.
Utility model content
In view of this, the purpose of this utility model is to overcome defect of the prior art, it is provided that a kind of can preferably be conducted away by the heat that air valve cervix and valve end surface center are gathered, so that the self-cleaning that exhaust valve heat radiation has branch flow passage uniformly rushes sodium valve.
The self-cleaning with branch flow passage of the present utility model rushes sodium valve, including valve disc and valve stem, described valve disc lateral wall is provided with around its axially extended helical blade, being axially arranged with cylindrical stem along it inside described valve stem rush sodium chamber and rush sodium chamber with this bar portion and connect and along multiple branch flow passages of valve stem axial distribution, the length of described branch flow passage is gradually shortened along the direction away from valve disc；
Further, described bar portion rushes upper end, sodium chamber and extends to valve stem outer end and be threadably secured to be connected have valve plug screw with connection and valve stem outer end outside valve stem, and described bar portion is rushed sodium chamber and sealed by this valve plug screw；
Further, being provided with and rush the head of sodium chamber coaxial communication with bar portion and rush sodium chamber and this head rushes sodium chamber and is cone-shaped cavity and described head rushes sodium intracavity footpath and is gradually increased from top to bottom in described valve disc, described bar portion rushes sodium chamber and rushes sodium intracavity with head and be filled with sodium.
Further, described valve stem surface is provided with chromium coating；Described valve disc is circumferentially with annular groove along it；It is coated with overlay cladding in described annular groove and overlay surface is taper seat；
Further, described annular groove is arc surface with the contact surface of overlay cladding；
Further, described valve disc bottom surface is provided with the circular groove coaxial with valve disc；
Further, the self-cleaning with this with branch flow passage rushes a length of S of the valve guide bushing that sodium valve coordinates1, it is S that this self-cleaning with branch flow passage rushes sodium valve relative to the stroke that valve guide bushing moves2, the axial length of described valve stem plated surface layers of chrome is S1+S2；
Further, described valve plug screw is less than valve collet internal diameter circumferentially arranged with rod slot and rod slot diameter.
The beneficial effects of the utility model are: the self-cleaning with branch flow passage of the present utility model rushes sodium valve, head portion that lateral wall is provided with the wind-guiding wing plate that guiding gas flows to, for comparing existing valve, head portion that fully can be dispelled the heat by the wind-guiding wing plate of this version of this utility model as fin, eddy current can be manufactured again simultaneously, be conducive to fuel gas mixing, branch flow passage is conducive to the contact area increasing metallic sodium with valve stem, it is possible to strengthen the heat exchange rate of the metallic sodium in cavity and valve disc.
Accompanying drawing explanation
With embodiment, this utility model is further described below in conjunction with the accompanying drawings:
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
Fig. 1 is structural representation of the present utility model, as shown in the figure, the self-cleaning with branch flow passage in the present embodiment rushes sodium valve, described valve disc 3 lateral wall is provided with around its axially extended helical blade 11, being axially arranged with cylindrical stem along it inside described valve stem rush sodium chamber 9 and rush sodium chamber 9 with this bar portion and connect and along multiple branch flow passages 12 of valve stem axial distribution, the length of described branch flow passage 12 is gradually shortened along the direction away from valve disc.
In the present embodiment, described bar portion rushes upper end, sodium chamber 9 and extends to valve stem outer end and be threadably secured to be connected have valve plug screw with connection and valve stem outer end outside valve stem, described bar portion is rushed sodium chamber 9 and is sealed by this valve plug screw, the bar portion of this structure rushes sodium chamber 9 and is easier to processing, is on the other hand also easy to filler metal sodium.
In the present embodiment, it is provided with in described valve disc 3 and rushes the head of sodium chamber 9 coaxial communication with bar portion and rush sodium chamber 10 and this head rushes sodium chamber 10 and rushes sodium chamber 10 internal diameter be gradually increased from top to bottom for cone-shaped cavity and described head, described bar portion rushes in sodium chamber 9 rushes sodium chamber 10 with head and is filled with sodium, owing to the temperature near valve is gradually reduced from down to up, the most this cone-shaped cavity can make the temperature of valve tend to uniform, it is to avoid produces thermal stress.
In the present embodiment, described valve stem surface is provided with chromium coating 6；Described valve disc is circumferentially with annular groove along it；It is coated with overlay cladding 2 in described annular groove and overlay cladding 2 surface is taper seat；After arranging and rushing sodium chamber, the structural strength of valve stem will reduce, and the chromium coating on valve stem surface can overcome the disadvantages that the mechanical strength of valve stem, improves its thermostability simultaneously；It addition, the overlay cladding 2 that valve disc 3 is circumferentially disposed, this overlay cladding 2 matches with valve retainer, can be effectively improved the abrasion of valve disc 3.
In the present embodiment, described annular groove is arc surface with the contact surface of overlay cladding 2, and this arc surface can increase the contact area of overlay cladding 2 and valve disc 3, it is ensured that overlay cladding 2 is firmly connected with valve disc 3.
In the present embodiment, described valve disc 3 bottom surface is provided with the circular groove 1 coaxial with valve disc 3, and this circular groove 1, as a part for engine chamber, can adjust the compression ratio of electromotor by the size adjusting circular groove 1 in certain limit.
In the present embodiment, the self-cleaning with this with branch flow passage rushes a length of S of the valve guide bushing that sodium valve coordinates1, it is S that this self-cleaning with branch flow passage rushes sodium valve relative to the stroke that valve guide bushing moves2, the axial length of described valve stem plated surface layers of chrome 6 is S1+S2As shown in Figure 1, chromium coating 6 is for being slidably matched with valve guide bushing, to reduce abrasion, for improving the utilization rate of chromium coating 6, cost-effective, the length that axial length is valve guide bushing of the chromium coating 6 that the present embodiment uses and valve stroke sum, ensure that the valve stem contact surface with valve guide bushing during moving back and forth is all covered with chromium coating 6, thus strengthen its wearability.
In the present embodiment, described valve plug screw is less than valve collet internal diameter circumferentially arranged with rod slot 7 and rod slot 7 diameter, it is ensured that valve stem is connected with valve reliable lock.
Finally illustrate is, above example is only in order to illustrate the technical solution of the utility model and unrestricted, although this utility model being described in detail with reference to preferred embodiment, it will be understood by those within the art that, the technical solution of the utility model can be modified or equivalent, without deviating from objective and the scope of technical solutions of the utility model, it all should be contained in the middle of right of the present utility model.
Claims (6)
1. a self-cleaning with branch flow passage rushes sodium valve, including valve disc and valve stem, it is characterized in that: described valve disc lateral wall is provided with around its axially extended helical blade, being axially arranged with cylindrical stem along it inside described valve stem rush sodium chamber and rush sodium chamber with this bar portion and connect and along multiple branch flow passages of valve stem axial distribution, the length of described branch flow passage is gradually shortened along the direction away from valve disc.
The self-cleaning with branch flow passage the most according to claim 1 rushes sodium valve, it is characterized in that: described bar portion rushes upper end, sodium chamber and extends to valve stem outer end and be threadably secured to be connected have valve plug screw with connection and valve stem outer end outside valve stem, and described bar portion is rushed sodium chamber and sealed by this valve plug screw.
The self-cleaning with branch flow passage the most according to claim 2 rushes sodium valve, it is characterized in that: be provided with in described valve disc and rush the head of sodium chamber coaxial communication with bar portion and rush sodium chamber and this head rushes sodium chamber and is cone-shaped cavity and described head rushes sodium intracavity footpath and is gradually increased from top to bottom, described bar portion rushes sodium chamber and rushes sodium intracavity with head and be filled with sodium.
The self-cleaning with branch flow passage the most according to claim 3 rushes sodium valve, it is characterised in that: described valve disc bottom surface is provided with the circular groove coaxial with valve disc.
The self-cleaning with branch flow passage the most according to claim 4 rushes sodium valve, it is characterised in that: the self-cleaning with this with branch flow passage rushes a length of S of the valve guide bushing that sodium valve coordinates1, it is S that this self-cleaning with branch flow passage rushes sodium valve relative to the stroke that valve guide bushing moves2, the axial length of described valve stem plated surface layers of chrome is S1+S2。
The self-cleaning with branch flow passage the most according to claim 5 rushes sodium valve, it is characterised in that: described valve plug screw is less than valve collet internal diameter circumferentially arranged with rod slot and rod slot diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520912011.7U CN205503209U (en) | 2015-10-30 | 2015-10-30 | Automatically cleaning formula is towards sodium valve with branch fluid channel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520912011.7U CN205503209U (en) | 2015-10-30 | 2015-10-30 | Automatically cleaning formula is towards sodium valve with branch fluid channel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205503209U true CN205503209U (en) | 2016-08-24 |
Family
ID=56720322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520912011.7U Expired - Fee Related CN205503209U (en) | 2015-10-30 | 2015-10-30 | Automatically cleaning formula is towards sodium valve with branch fluid channel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205503209U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105401997A (en) * | 2015-10-30 | 2016-03-16 | 重庆奇甫机械有限责任公司 | Spiral flow guiding and sodium injecting air valve with branch channels |
| CN107842406A (en) * | 2016-09-20 | 2018-03-27 | 曼柴油机和涡轮机欧洲股份公司 | Valve body, gas exchange valve and the internal combustion engine of gas exchange valve |
-
2015
- 2015-10-30 CN CN201520912011.7U patent/CN205503209U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105401997A (en) * | 2015-10-30 | 2016-03-16 | 重庆奇甫机械有限责任公司 | Spiral flow guiding and sodium injecting air valve with branch channels |
| CN107842406A (en) * | 2016-09-20 | 2018-03-27 | 曼柴油机和涡轮机欧洲股份公司 | Valve body, gas exchange valve and the internal combustion engine of gas exchange valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160824 Termination date: 20171030 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |