CN205089402U - Spiral toper chamber towards sodium valve circulates - Google Patents
Spiral toper chamber towards sodium valve circulates Download PDFInfo
- Publication number
- CN205089402U CN205089402U CN201520856780.XU CN201520856780U CN205089402U CN 205089402 U CN205089402 U CN 205089402U CN 201520856780 U CN201520856780 U CN 201520856780U CN 205089402 U CN205089402 U CN 205089402U
- Authority
- CN
- China
- Prior art keywords
- valve
- head
- sodium
- circulation helical
- valve stem
- Prior art date
- 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
Links
Classifications
-
- 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
Landscapes
- Lift Valve (AREA)
Abstract
The utility model discloses a spiral toper chamber towards sodium valve circulates, including valve head and valve stem, the inside circulation spiral flowing channel that is equipped with of valve stem, be equipped with head towards sodium chamber in the valve head, circulation spiral flowing channel includes along the axially extended spiral flow channel of valve stem and intercommunication spiral flow channel upper end and the backflow channel of head towards the sodium chamber, spiral flow channel lower extreme and head are towards sodium chamber intercommunication, it has sodium to dash in the circulation spiral flowing channel, and the valve stem surface is equipped with chromium -plated layer, and the valve head is equipped with the annular along its circumference, and the annular interlap has overlay and overlay surface for the circular conical surface, and what this spiral toper chamber towards sodium valve circulates 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
The utility model relates to engine component field, and specifically a kind of circulation helical formula conical cavity rushes sodium valve.
Background technique
Gasoline engine exhaust door in the past adopts solid exhaust valve, and exhaust valve head adopts resistant to elevated temperatures austenite material, and bar portion adopts martensitic material, then forms through processes such as welding, surface treatments.The exhaust valve of this structure, technique only can be used in delivery temperature and is no more than on the natural aspiration petrol engine of 750 DEG C.In supercharged engine, owing to employing compress inlet air technology (specifically having turbosupercharging, engine driven supercharging and two supercharging), make the burning pressure of explosion in cylinder than high during natural aspiration, the temperature in cylinder is also than high 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 working life, reduces heat dispersion.In order to address this problem, people are at engine valve stem boring formation one cavity of exhaust valve, the fusing point of sodium metal is 97.81 DEG C, under the prerequisite of rational hollow cavity volume, when valve works, temperature raises very fast, sodium metal becomes liquid state when high temperature from solid-state, move up and down in hollow cavity and constantly wash away valve face and valve stem, the heat load of valve face end is effectively delivered to valve stem, then by the water channel coolant exhaust door of cylinder cap, improve the thermal diffusivity of exhaust valve, the heat load of effective reduction valve face, in addition, the proportion of sodium metal is less, the total quality of valve diminishes, and the rigidity grow of valve, under equal conditions, the amount of deformation of valve is little, but the exhaust valve that existing hollow fills sodium structure has a problem: the heat of air valve cervix and valve end surface center is not easy to be conducted away smoothly, be the position that temperature is assembled, the heat dissipation uniformity of exhaust valve can be affected, reduce the exhaust valve life-span.
Therefore, for overcoming the above problems, need a kind of can being walked by the heat conduction that air valve cervix and valve end surface center gather preferably, thus make the head portion that uniform circulation helical formula conical cavity that dispels the heat rush sodium valve.
Model utility content
In view of this, the purpose of this utility model overcomes defect of the prior art, and providing a kind of can walk the heat conduction that air valve cervix and valve end surface center gather preferably, thus make the exhaust valve uniform circulation helical formula conical cavity that dispels the heat rush sodium valve.
Circulation helical formula conical cavity of the present utility model rushes sodium valve, comprise valve head and valve stem, valve stem inside is provided with circulation helical runner, be provided with head in described valve head and rush sodium chamber, the internal diameter that described head rushes sodium chamber reduces from down to up gradually, described circulation helical runner comprise along the axially extended screw-shaped flow paths of valve stem and be communicated with screw-shaped flow paths upper end and head rush sodium chamber backflow road; Described screw-shaped flow paths lower end and head rush sodium chamber and are communicated with; Punching has sodium in described circulation helical runner, and valve stem surface is provided with chromium coating, and valve head is circumferentially with annular groove along it, is coated with overlay cladding and overlay surface is conical surface in annular groove;
Further, the surface of contact of described annular groove and overlay cladding is arc surface;
Further, described valve stem comprises the shaft I and the shaft II that be connected coaxial with shaft I that are fixedly connected with valve head vertically, and shaft I is the solid of rotation that reduces gradually of radius from top to bottom, and shaft II is less than the cylindrical body of shaft I least radius for radius;
Further, described valve head bottom surface is provided with the circular groove coaxial with valve head;
Further, the length of rushing with this circulation helical formula conical cavity the valve guide bushing that sodium valve coordinates is S
1, it is S that this circulation helical formula conical cavity rushes sodium valve relative to the stroke that valve guide bushing moves
2, the axial length of described valve stem plated surface layers of chrome is S
1+ S
2;
Further, described valve stem is circumferentially provided with annular groove and groover rot diameter is less than valve collet internal diameter on the cylndrical surface on its top.
The beneficial effects of the utility model are: circulation helical formula conical cavity of the present utility model rushes sodium valve, screw-shaped flow paths is conducive to guide wire sodium helical flow, compare the existing cylindrical valve rushing sodium chamber, the circulation path of helical flow path of the present utility model is longer, backflow road can make sodium metal circulate, and can strengthen the exchange heat speed of sodium metal in cavity and valve head; In engine operation, head rushes sodium metal in sodium chamber and absorbs heat and along screw-shaped flow paths flowing, in flow process, realize cooling, stays get back to head and rush in sodium chamber eventually through backflow road, on the other hand, the head of taper rushes the structural strength that sodium chamber can ensure valve head; After arranging and rushing sodium chamber, the structural strength of valve stem will reduce, and the chromium coating on valve stem surface can make up the mechanical strength of valve stem, improves its heat resistance simultaneously; In addition, the overlay cladding that valve head circumference is arranged, this overlay cladding matches with air valve seat ring, effectively can improve the wearing and tearing of valve head.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further described:
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the partial enlarged drawing at A place in Fig. 1;
Fig. 3 is the schematic diagram of circulation helical runner of the present utility model.
Embodiment
Fig. 1 is structural representation of the present utility model, Fig. 2 is the partial enlarged drawing at A place in Fig. 1, as shown in the figure, circulation helical formula conical cavity in the present embodiment rushes sodium valve, comprise valve head 3 and valve stem, valve stem inside is provided with circulation helical runner 9, be provided with head in described valve head 3 and rush sodium chamber 11, the internal diameter that described head rushes sodium chamber 11 reduces from down to up gradually, described circulation helical runner 9 comprises along the axially extended screw-shaped flow paths of valve stem and is communicated with the backflow road 10 that screw-shaped flow paths upper end and head rush sodium chamber 11, in circulation helical runner 9, punching has sodium, valve stem surface is provided with chromium coating 6, valve head 3 is circumferentially with annular groove 8 along it, be coated with overlay cladding 2 in annular groove 8 and overlay cladding 2 surface for conical surface,
In the present embodiment, described annular groove 8 is arc surface 11 with the surface of contact of overlay cladding 2, and this arc surface 11 can increase overlay cladding 2 and the area of contact of valve head 3, ensures that overlay cladding 2 is firmly connected with valve head 3.
In the present embodiment, described valve stem comprises the shaft I 4 and the shaft II 5 that be connected coaxial with shaft I 4 that are fixedly connected with valve head 3 vertically, shaft I 4 is the solid of rotation that reduces gradually of radius from top to bottom, shaft II 5 is less than the cylindrical body of shaft I 4 least radius for radius, " lower end " as herein described refers to towards valve head 3 one end, end opposite is " upper end ", shaft I 4 is the changeover portion between valve head 3 and shaft II 5, this seamlessly transit can avoid valve stem occur stress concentrate, simultaneously due to shaft I 4 at work, its temperature reduces from bottom to up gradually, adopt the shaft I 4 of this structure that it can be made to dispel the heat evenly.
In the present embodiment, described valve head 3 bottom surface is provided with the circular groove 1 coaxial with valve head 3, and this circular groove 1, as a part for engine chamber, can adjust the compression ratio of motor in certain limit by the size adjusting circular groove 1.
In the present embodiment, the length of rushing the valve guide bushing that sodium valve coordinates with this circulation helical formula conical cavity is S
1, it is S that this circulation helical formula conical cavity rushes sodium valve relative to the stroke that valve guide bushing moves
2, the axial length of described valve stem plated surface layers of chrome is S
1+ S
2as shown in Figure 1, dot-dash wire frame region is chromium coating 6, chromium coating 6, for being slidably matched with valve guide bushing, to reduce wearing and tearing, is the utilization ratio of raising chromium coating 6, cost-saving, the axial length of the chromium coating 6 that the present embodiment adopts is length and the valve stroke sum of valve guide bushing, ensures that valve stem is all coated with chromium coating 6 with the surface of contact of valve guide bushing in reciprocating process, thus strengthens its wear resistance.
In the present embodiment, described valve stem is circumferentially provided with rod slot 7 on the cylndrical surface on its top and rod slot 7 end diameter is less than valve collet internal diameter, ensures that valve stem is connected with valve reliable lock.
What finally illustrate is, above embodiment is only in order to illustrate the technical solution of the utility model and unrestricted, although be described in detail the utility model with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify to the technical solution of the utility model or equivalent replacement, and not departing from aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of right of the present utility model.
Claims (6)
1. a circulation helical formula conical cavity rushes sodium valve, comprise valve head and valve stem, it is characterized in that: described valve stem inside is provided with circulation helical runner, be provided with head in described valve head and rush sodium chamber, the internal diameter that described head rushes sodium chamber reduces from down to up gradually, and described circulation helical runner comprises along the axially extended screw-shaped flow paths of valve stem and is communicated with the backflow road that screw-shaped flow paths upper end and head rush sodium chamber; Described screw-shaped flow paths lower end and head rush sodium chamber and are communicated with; In described circulation helical runner, punching has sodium; Described valve stem surface is provided with chromium coating; Described valve head is circumferentially with annular groove along it; Overlay cladding is coated with and overlay surface is conical surface in described annular groove.
2. circulation helical formula conical cavity according to claim 1 rushes sodium valve, it is characterized in that: the surface of contact of described annular groove and overlay cladding is arc surface.
3. circulation helical formula conical cavity according to claim 2 rushes sodium valve, it is characterized in that: described valve stem comprises the shaft I and the shaft II that be connected coaxial with shaft I that are fixedly connected with valve head vertically; Described shaft I is the solid of rotation that reduces gradually of radius from top to bottom; Described shaft II is less than the cylindrical body of shaft I least radius for radius.
4. circulation helical formula conical cavity according to claim 3 rushes sodium valve, it is characterized in that: described valve head bottom surface is provided with the circular groove coaxial with valve head.
5. circulation helical formula conical cavity according to claim 4 rushes sodium valve, it is characterized in that: the length of rushing the valve guide bushing that sodium valve coordinates with this circulation helical formula conical cavity is S
1, it is S that this circulation helical formula conical cavity rushes sodium valve relative to the stroke that valve guide bushing moves
2, the axial length of described valve stem plated surface layers of chrome is S
1+ S
2.
6. circulation helical formula conical cavity according to claim 5 rushes sodium valve, it is characterized in that: described valve stem is circumferentially provided with rod slot on the cylndrical surface on its top and rod slot diameter is less than valve collet internal diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520856780.XU CN205089402U (en) | 2015-10-30 | 2015-10-30 | Spiral toper chamber towards sodium valve circulates |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520856780.XU CN205089402U (en) | 2015-10-30 | 2015-10-30 | Spiral toper chamber towards sodium valve circulates |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205089402U true CN205089402U (en) | 2016-03-16 |
Family
ID=55480098
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520856780.XU Expired - Fee Related CN205089402U (en) | 2015-10-30 | 2015-10-30 | Spiral toper chamber towards sodium valve circulates |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205089402U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443186A (en) * | 2015-10-30 | 2016-03-30 | 重庆奇甫机械有限责任公司 | Air valve with circulative spiral type conical cavity |
-
2015
- 2015-10-30 CN CN201520856780.XU patent/CN205089402U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443186A (en) * | 2015-10-30 | 2016-03-30 | 重庆奇甫机械有限责任公司 | Air valve with circulative spiral type conical cavity |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204402609U (en) | What have that head rushes sodium chamber rushes sodium valve | |
| CN204402610U (en) | Rush sodium valve | |
| CN204402611U (en) | What have wind-guiding wing plate rushes sodium valve | |
| CN204663610U (en) | Twoly rush sodium chamber valve | |
| CN204060836U (en) | Rush sodium valve | |
| CN205089402U (en) | Spiral toper chamber towards sodium valve circulates | |
| CN205154285U (en) | Toper two -chamber is towards sodium valve with combustion chamber and branch fluid channel | |
| CN205089405U (en) | Air current direction formula circulation spiral is towards sodium valve | |
| CN204402608U (en) | There is the valve that sodium chamber is rushed in taper | |
| CN205089404U (en) | Spiral toper chamber of automatically cleaning is towards sodium valve | |
| CN205089403U (en) | Circulating spiral chamber of automatically cleaning is towards sodium valve | |
| CN205154280U (en) | Automatically cleaning circulation spiral two -chamber towards sodium valve | |
| CN205154288U (en) | Spiral chamber is towards sodium valve with combustion chamber | |
| CN205089400U (en) | Automatically cleaning formula spiral chamber is towards sodium valve | |
| CN205089409U (en) | Spiral hemisphere heat -transfer surface of automatically cleaning is towards sodium valve | |
| CN205089407U (en) | Automatically cleaning formula is towards sodium valve | |
| CN205089408U (en) | Automatically cleaning formula spiral two -chamber is towards sodium valve | |
| CN204663609U (en) | Have closedly can rush sodium chamber rush sodium valve | |
| CN205089401U (en) | High -efficient heat transfer formula towards sodium valve of automatically cleaning | |
| CN205154287U (en) | Circulating spiral chamber is towards sodium valve with combustion chamber | |
| CN205315064U (en) | Spiral toper chamber is towards sodium valve | |
| CN105240080A (en) | Double-cavity sodium-filled valve with spiral blade | |
| CN205503209U (en) | Automatically cleaning formula is towards sodium valve with branch fluid channel | |
| CN205154282U (en) | Towards sodium valve with combustion chamber | |
| CN205154286U (en) | Two -chamber is towards sodium valve with combustion chamber |
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: 20160316 Termination date: 20161030 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |