CN105240073A - Sodium charging air valve with semispherical heat exchange face - Google Patents
Sodium charging air valve with semispherical heat exchange face Download PDFInfo
- Publication number
- CN105240073A CN105240073A CN201510719355.0A CN201510719355A CN105240073A CN 105240073 A CN105240073 A CN 105240073A CN 201510719355 A CN201510719355 A CN 201510719355A CN 105240073 A CN105240073 A CN 105240073A
- Authority
- CN
- China
- Prior art keywords
- valve
- sodium
- head
- air valve
- heat exchanger
- 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.)
- Pending
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 invention discloses a sodium charging air valve with a semispherical heat exchange face. The sodium charging air valve comprises an air valve head and an air valve rod. The air valve rod is internally provided with a spiral runner. The air valve head is internally provided with a head sodium charging cavity communicated with the spiral runner. The bottom face of the head sodium charging cavity is a downwards-protruding semispherical face. Sodium is charged in the spiral runner. The surface of the air valve rod is provided with a chromium coating. A ring groove is formed in the air valve head in the circumferential direction of the air valve head. The ring groove is internally covered with an overlaying layer, and the surface of the overlaying layer is a conical face. According to the sodium charging air valve with the semispherical heat exchange face, heat accumulated on the neck of the air valve and the center of the end face of the air valve head can be well conducted away, 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 there is hemisphere heat exchanger surface rush 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 head portion that is dispelled the heat there is hemisphere heat exchanger surface uniformly 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 exhaust valve is dispelled the heat there is hemisphere heat exchanger surface uniformly rush sodium valve.
Of the present invention there is hemisphere heat exchanger surface rush sodium valve, comprise valve head and valve stem, 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 bottom surface that described head rushes sodium chamber is the hemisphere face protruded downwards, and in helical flow path, punching has sodium, 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 with hemisphere heat exchanger surface is S
1, this sodium valve that rushes with hemisphere heat exchanger surface is S 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: of the present invention there is hemisphere heat exchanger surface rush 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 hemispheric bottom surface that head rushes sodium chamber effectively can expand the heat exchange area of itself and valve head; 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, and Fig. 2 is the partial enlarged drawing at A place in Fig. 1, as shown in the figure, in the present embodiment there is hemisphere heat exchanger surface rush sodium valve, comprise valve head 3 and valve stem 4, 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 bottom surface that described head rushes sodium chamber 10 is the hemisphere face 11 protruded downwards, 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 having hemisphere heat exchanger surface with this is S
1, this sodium valve that rushes with hemisphere heat exchanger surface is S 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. what have hemisphere heat exchanger surface rushes a sodium valve, comprises valve head and valve stem, it is characterized in that: 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 bottom surface that described head rushes sodium chamber is the hemisphere face protruded downwards; 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. according to claim 1 there is hemisphere heat exchanger surface rush sodium valve, it is characterized in that: the surface of contact of described annular groove and overlay cladding is arc surface.
3. according to claim 2 there is hemisphere heat exchanger surface rush sodium valve, it is characterized in that: described valve head bottom surface is provided with the circular groove coaxial with valve head.
4. according to claim 3 there is hemisphere heat exchanger surface rush sodium valve, it is characterized in that: the length of rushing the valve guide bushing that sodium valve coordinates having hemisphere heat exchanger surface with this is S
1, this sodium valve that rushes with hemisphere heat exchanger surface is S 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. according to claim 4 there is hemisphere heat exchanger surface rush 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 |
|---|---|---|---|
| CN201510719355.0A CN105240073A (en) | 2015-10-30 | 2015-10-30 | Sodium charging air valve with semispherical heat exchange face |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510719355.0A CN105240073A (en) | 2015-10-30 | 2015-10-30 | Sodium charging air valve with semispherical heat exchange face |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105240073A true CN105240073A (en) | 2016-01-13 |
Family
ID=55037864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510719355.0A Pending CN105240073A (en) | 2015-10-30 | 2015-10-30 | Sodium charging air valve with semispherical heat exchange face |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105240073A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109877478A (en) * | 2019-02-20 | 2019-06-14 | 华南理工大学 | A kind of sodium filling valve and its manufacturing method based on topological optimization and 3D printing |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61197707A (en) * | 1985-02-25 | 1986-09-02 | Mitsubishi Heavy Ind Ltd | Intake and exhaust valve for internal-combustion engine |
| DE10057192A1 (en) * | 2000-11-17 | 2002-05-23 | Mahle Ventiltrieb Gmbh | Poppet valve for use in cylinder of internal combustion engine has cavity in stem, extending into head, and containing fluid and spiral strip insert |
| 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 |
| CN204402610U (en) * | 2014-12-19 | 2015-06-17 | 重庆奇甫机械有限责任公司 | Rush sodium valve |
| 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 |
-
2015
- 2015-10-30 CN CN201510719355.0A patent/CN105240073A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61197707A (en) * | 1985-02-25 | 1986-09-02 | Mitsubishi Heavy Ind Ltd | Intake and exhaust valve for internal-combustion engine |
| DE10057192A1 (en) * | 2000-11-17 | 2002-05-23 | Mahle Ventiltrieb Gmbh | Poppet valve for use in cylinder of internal combustion engine has cavity in stem, extending into head, and containing fluid and spiral strip insert |
| 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 |
| CN204402610U (en) * | 2014-12-19 | 2015-06-17 | 重庆奇甫机械有限责任公司 | Rush sodium valve |
| 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 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109877478A (en) * | 2019-02-20 | 2019-06-14 | 华南理工大学 | A kind of sodium filling valve and its manufacturing method based on topological optimization and 3D printing |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204402609U (en) | What have that head rushes sodium chamber rushes sodium valve | |
| CN204402610U (en) | Rush sodium valve | |
| CN202900355U (en) | Automobile engine exhaust valve | |
| CN204402611U (en) | What have wind-guiding wing plate rushes sodium valve | |
| CN204060836U (en) | Rush sodium valve | |
| CN204663610U (en) | Twoly rush sodium chamber valve | |
| CN204402608U (en) | There is the valve that sodium chamber is rushed in taper | |
| CN105240073A (en) | Sodium charging air valve with semispherical heat exchange face | |
| CN205154285U (en) | Toper two -chamber is towards sodium valve with combustion chamber and branch fluid channel | |
| CN205089404U (en) | Spiral toper chamber of automatically cleaning is towards sodium valve | |
| CN105240080A (en) | Double-cavity sodium-filled valve with spiral blade | |
| CN105401997A (en) | Spiral flow guiding and sodium injecting air valve with branch channels | |
| CN205089409U (en) | Spiral hemisphere heat -transfer surface of automatically cleaning is towards sodium valve | |
| CN105240078A (en) | Screw flow guide air valve charged with sodium | |
| CN205154288U (en) | Spiral chamber is towards sodium valve with combustion chamber | |
| CN205089400U (en) | Automatically cleaning formula spiral chamber is towards sodium valve | |
| CN205503209U (en) | Automatically cleaning formula is towards sodium valve with branch fluid channel | |
| CN205089407U (en) | Automatically cleaning formula is towards sodium valve | |
| CN204663609U (en) | Have closedly can rush sodium chamber rush sodium valve | |
| CN205089408U (en) | Automatically cleaning formula spiral two -chamber is towards sodium valve | |
| CN205089402U (en) | Spiral toper chamber towards sodium valve circulates | |
| CN205315064U (en) | Spiral toper chamber is towards sodium valve | |
| CN205089401U (en) | High -efficient heat transfer formula towards sodium valve of automatically cleaning | |
| CN105298581A (en) | Spiral flow-guide efficient heat exchange type sodium charging air valve | |
| CN205089403U (en) | Circulating spiral chamber of automatically cleaning is towards sodium valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160113 |