CN105240078A - Screw flow guide air valve charged with sodium - Google Patents
Screw flow guide air valve charged with sodium Download PDFInfo
- Publication number
- CN105240078A CN105240078A CN201510725302.XA CN201510725302A CN105240078A CN 105240078 A CN105240078 A CN 105240078A CN 201510725302 A CN201510725302 A CN 201510725302A CN 105240078 A CN105240078 A CN 105240078A
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- valve
- sodium
- head
- air valve
- rushes
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Abstract
The invention discloses a screw flow guide air valve charged with sodium. The air valve comprises an air valve head and an air valve rod. A screw runner is arranged in the air valve rod. A head cavity charged with sodium is arranged in the air valve head and communicated with the screw runner, and the screw runner is charged with sodium. A chromium coating is arranged on the surface of the air valve rod. A ring groove is formed in the circumferential direction of the air valve head. An overlaying layer is arranged in the ring groove in a covering manner, and the surface of the overlaying layer is a conical surface. According to the screw flow guide air valve charged with sodium, heat accumulated at an air valve neck and the center of the end face of the air valve head can be conducted away well, and therefore the air valve is uniform in heat dissipation.
Description
Technical field
The present invention relates to engine component field, specifically a kind of spiral stream guidance 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 spiral stream guidance that dispels the heat rush sodium valve.
Summary of the invention
In view of this, the object of the invention is to overcome defect of the prior art, providing a kind of can walk the heat conduction that air valve cervix and valve end surface center gather preferably, thus makes the exhaust valve uniform spiral stream guidance that dispels the heat rush sodium valve.
Spiral stream guidance of the present invention rushes sodium valve, comprises valve head and valve stem, and described valve head outer side wall is provided with around its axially extended helical blade, and valve stem inside is provided with helical flow path, and described valve head inside is provided with the head be communicated with helical flow path and rushes sodium chamber; The internal diameter that described head rushes sodium chamber reduces from lower to upper gradually, and punching has sodium in helical flow path, 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 head bottom surface is provided with the circular groove coaxial with valve head;
Further, the length of rushing the valve guide bushing that sodium valve coordinates with this spiral stream guidance is S
1, it is S that this spiral stream guidance 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 invention has the beneficial effects as follows: spiral stream guidance of the present invention rushes sodium valve, helical flow path is conducive to the helical flow of guide wire sodium, compare the existing cylindrical valve rushing sodium chamber, the circulation path of helical flow path of the present invention is longer, can strengthen the exchange heat speed of sodium metal in cavity and valve head; The head sodium metal rushed in sodium chamber effectively can absorb the heat of valve head; The head of taper rushes the structural strength that sodium chamber can ensure head portion that; On the other hand, 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 invention will be further described:
Fig. 1 is structural representation of the present invention;
Fig. 2 is the partial enlarged drawing at A place in Fig. 1;
Fig. 3 is the structural representation that helical flow path of the present invention and head rush sodium chamber.
Embodiment
Fig. 1 is structural representation of the present invention, Fig. 2 is the partial enlarged drawing at A place in Fig. 1, as shown in the figure, spiral stream guidance in the present embodiment rushes sodium valve, comprise valve head 3 and valve stem 4, described valve head 3 outer side wall is provided with around its axially extended helical blade 4, and valve stem 4 inside is provided with helical flow path 9; Described valve head 3 inside is provided with the head be communicated with helical flow path 9 and rushes sodium chamber 10, the internal diameter that described head rushes sodium chamber 10 reduces from lower to upper gradually, in helical flow path 9, punching has sodium, valve stem 4 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; Helical flow path 9 in valve stem 4 can guide liquid metal sodium helical flow, compare the valve that existing employing circular cylindrical cavity carries out rushing sodium, the helical flow path 9 of this structural type of the present invention can extend the circulation length of runner, can strengthen the exchange heat speed of sodium metal in cavity and valve head 3; In addition, the overlay cladding 2 that valve head 3 circumference is arranged, this overlay cladding 2 matches with air valve seat ring, effectively can improve the wearing and tearing of valve head 3, and the chromium coating 6 on valve stem 4 surface can improve mechanical strength and the heat resistance of valve.
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 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 spiral stream guidance is S
1, it is S that this spiral stream guidance rushes sodium valve relative to the stroke that valve guide bushing moves
2, the axial length of described valve stem 4 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 4 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 4 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 4 is connected with valve reliable lock.
What finally illustrate is, above embodiment is only in order to illustrate technological scheme of the present invention and unrestricted, although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technological scheme of the present invention or equivalent replacement, and not departing from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (5)
1. spiral stream guidance rushes a sodium valve, comprises valve head and valve stem, it is characterized in that: described valve head outer side wall is provided with around its axially extended helical blade, and described valve stem inside is provided with helical flow path; Described valve head inside is provided with the head be communicated with helical flow path and rushes sodium chamber, and the internal diameter that described head rushes sodium chamber reduces from lower to upper gradually; In described helical flow path, 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. spiral stream guidance 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. spiral stream guidance according to claim 2 rushes sodium valve, it is characterized in that: described valve head bottom surface is provided with the circular groove coaxial with valve head.
4. spiral stream guidance according to claim 3 rushes sodium valve, it is characterized in that: the length of rushing the valve guide bushing that sodium valve coordinates with this spiral stream guidance is S
1, it is S that this spiral stream guidance 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.
5. spiral stream guidance according to claim 4 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 |
|---|---|---|---|
| CN201510725302.XA CN105240078A (en) | 2015-10-30 | 2015-10-30 | Screw flow guide air valve charged with sodium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510725302.XA CN105240078A (en) | 2015-10-30 | 2015-10-30 | Screw flow guide air valve charged with sodium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105240078A true CN105240078A (en) | 2016-01-13 |
Family
ID=55037869
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510725302.XA Pending CN105240078A (en) | 2015-10-30 | 2015-10-30 | Screw flow guide air valve charged with sodium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105240078A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102578128A (en) * | 2012-02-06 | 2012-07-18 | 山东禾宜生物科技有限公司 | Bactericide for controlling apple altermaria leaf spots |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR817272A (en) * | 1936-05-09 | 1937-08-31 | Valve with self-rotating device for combustion or internal combustion engines | |
| US2162304A (en) * | 1937-01-23 | 1939-06-13 | Motoraktieselskapet Av 1935 | Internally cooled valve for combustion engines |
| GB898588A (en) * | 1959-12-17 | 1962-06-14 | Sulzer Ag | Valve spring assemblies |
| JPH04252822A (en) * | 1991-01-28 | 1992-09-08 | Toyota Motor Corp | Intake device for internal combustion engine of double intake valve type |
| CN202900355U (en) * | 2012-10-31 | 2013-04-24 | 浙江吉利汽车研究院有限公司杭州分公司 | Automobile engine exhaust valve |
| CN204200295U (en) * | 2014-09-26 | 2015-03-11 | 湖南天雁机械有限责任公司 | With the engine valve of helical blade |
| CN204402609U (en) * | 2014-12-19 | 2015-06-17 | 重庆奇甫机械有限责任公司 | What have that head rushes sodium chamber rushes sodium valve |
| CN205089404U (en) * | 2015-10-30 | 2016-03-16 | 重庆奇甫机械有限责任公司 | Spiral toper chamber of automatically cleaning is towards sodium valve |
-
2015
- 2015-10-30 CN CN201510725302.XA patent/CN105240078A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR817272A (en) * | 1936-05-09 | 1937-08-31 | Valve with self-rotating device for combustion or internal combustion engines | |
| US2162304A (en) * | 1937-01-23 | 1939-06-13 | Motoraktieselskapet Av 1935 | Internally cooled valve for combustion engines |
| GB898588A (en) * | 1959-12-17 | 1962-06-14 | Sulzer Ag | Valve spring assemblies |
| JPH04252822A (en) * | 1991-01-28 | 1992-09-08 | Toyota Motor Corp | Intake device for internal combustion engine of double intake valve type |
| CN202900355U (en) * | 2012-10-31 | 2013-04-24 | 浙江吉利汽车研究院有限公司杭州分公司 | Automobile engine exhaust valve |
| CN204200295U (en) * | 2014-09-26 | 2015-03-11 | 湖南天雁机械有限责任公司 | With the engine valve of helical blade |
| CN204402609U (en) * | 2014-12-19 | 2015-06-17 | 重庆奇甫机械有限责任公司 | What have that head rushes sodium chamber rushes sodium valve |
| CN205089404U (en) * | 2015-10-30 | 2016-03-16 | 重庆奇甫机械有限责任公司 | Spiral toper chamber of automatically cleaning is towards sodium valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102578128A (en) * | 2012-02-06 | 2012-07-18 | 山东禾宜生物科技有限公司 | Bactericide for controlling apple altermaria leaf spots |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160113 |
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| WD01 | Invention patent application deemed withdrawn after publication |