CN105240080A - Double-cavity sodium-filled valve with spiral blade - Google Patents
Double-cavity sodium-filled valve with spiral blade Download PDFInfo
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- CN105240080A CN105240080A CN201510726462.6A CN201510726462A CN105240080A CN 105240080 A CN105240080 A CN 105240080A CN 201510726462 A CN201510726462 A CN 201510726462A CN 105240080 A CN105240080 A CN 105240080A
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- Prior art keywords
- valve
- sodium
- chamber
- head
- helical blade
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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 invention discloses a double-cavity sodium-filled valve with a spiral blade. The spiral blade extending in the axial direction of a valve head is arranged on the outer lateral wall of the valve head; a cylindrical rod portion sodium-filled cavity is arranged inside a valve rod in the axial direction; the valve head is internally provided with a head portion sodium-filled cavity coaxially communicated with the rod portion sodium-filled cavity; the head portion sodium-filled cavity is a conical cavity; the inner diameter of the head portion sodium-filled cavity is gradually increased from top to bottom; a partition board is arranged inside the rod portion sodium-filled cavity in the radial direction and divides the rod portion sodium-filled cavity into an annular runner; the lower end face of the head portion sodium-filled cavity is a downwards protruding spherical face; the rod portion sodium-filled cavity and the head portion sodium-filled cavity are filled with sodium. The double-cavity sodium-filled valve with the spiral blade can better transfer heat accumulated at the neck portion of the valve and the center of the end face of the valve head away, so that heat dissipation of the valve is uniform.
Description
Technical field
The present invention relates to engine component field, specifically a kind of dual-chamber washing sodium valve with helical blade.
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 head portion that heat radiation have the dual-chamber washing sodium valve of helical blade uniformly.
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 exhaust valve heat radiation have the dual-chamber washing sodium valve of helical blade uniformly.
The dual-chamber washing sodium valve with helical blade of the present invention, comprise valve head and valve stem, described valve head outer side wall is provided with around its axially extended helical blade, described valve stem inside is axially arranged with cylindrical stem along it and rushes sodium chamber, be provided with the head rushing sodium chamber coaxial communication with bar portion in described valve head and rush sodium chamber and this head rushes sodium chamber is cone-shaped cavity and described head rushes sodium chamber internal diameter increases gradually from top to bottom, described bar portion rushes in sodium chamber to be radially provided with dividing plate and this bar portion is rushed sodium chamber and is separated to form ring runner, the lower end surface that described head rushes sodium chamber is the sphere protruded downwards, described bar portion rushes sodium chamber and head and rushes in sodium chamber and be filled with sodium,
Further, 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;
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 the valve guide bushing that the dual-chamber washing sodium valve with this with helical blade coordinates is S
1, this dual-chamber washing sodium valve with helical blade 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 bar portion rushes upper end, sodium chamber and extends to valve end and to be communicated with outward with valve stem and valve stem outer end is fixedly connected with valve plug screw by screw thread, and described bar portion is rushed sodium chamber and sealed by this valve plug screw;
Further, described valve plug screw is circumferentially provided with rod slot and rod slot diameter is less than valve collet internal diameter.
The invention has the beneficial effects as follows: the dual-chamber washing sodium valve with helical blade of the present invention, helical blade on valve head drives valve rotation by the airflow scouring helical blade of discharging, both the circulation of gas can have been improved, turn increase the rigidity of valve, the more important thing is the carbon distribution reducing valve and valve seat, thus ensure the sealing that valve is good and longer life-span, the bar portion ring runner rushed in sodium chamber is conducive to circulating of guide wire sodium, the exchange heat speed of sodium metal in cavity and valve head can be strengthened, the lower end surface that head rushes sodium chamber is the Surface of Sphere protruded downwards, compare existing employing plane as the valve rushing sodium chamber both ends of the surface, rushing under the identical condition of sodium chamber diameter, the heat exchange area rushing sodium chamber and valve head of this structural type of the present invention is larger, the exchange heat speed of sodium metal in cavity and valve head can be strengthened, on the other hand, cavity can reduce the distance of valve head end face center and cavity towards the hemisphere face of valve head side, improves the heat radiation of valve head end face center region, make valve integral heat sink even with this, 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.
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 sectional view at B place in Fig. 1;
Fig. 4 is the structural representation of helical blade of the present invention.
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, the dual-chamber washing sodium valve with helical blade in the present embodiment, comprise valve head 3 and valve stem, described valve head 3 outer side wall is provided with around its axially extended helical blade 4, described valve stem inside is axially arranged with cylindrical stem along it and rushes sodium chamber 9, be provided with the head rushing sodium chamber 9 coaxial communication with bar portion in described valve head 3 and rush sodium chamber 10 and this head rushes sodium chamber 10 for cone-shaped cavity and described head rushes sodium chamber 10 internal diameter increases gradually from top to bottom, described bar portion rushes in sodium chamber 9 to be radially provided with dividing plate 11 and this bar portion is rushed sodium chamber 9 and is separated to form ring runner, the lower end surface that described head rushes sodium chamber 10 is the Surface of Sphere protruded downwards, described bar portion rushes sodium chamber 9 and rushes in sodium chamber 10 with head and be filled with sodium, the lower end surface that head rushes sodium chamber 10 is the Surface of Sphere protruded downwards, compare existing employing plane as the valve rushing sodium chamber both ends of the surface, rushing under the identical condition of sodium chamber diameter, the heat exchange area rushing sodium chamber and valve head 3 of this structural type of the present invention is larger, the exchange heat speed of sodium metal in cavity and valve head 3 can be strengthened, on the other hand, cavity can reduce the distance of valve head 3 end face center and cavity towards the hemisphere face of valve head 3 side, improves the heat radiation of valve head 3 end face center region, make valve integral heat sink even with this, 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 the present embodiment, described valve stem surface is provided with chromium coating 6; Described valve head 3 is circumferentially with annular groove along it; Be coated with overlay cladding 2 in described annular groove and overlay cladding 2 surface for conical surface, after arranging and rushing sodium chamber, the structural strength of valve stem will reduce, and the chromium coating 6 on valve stem surface can make up the mechanical strength of valve stem, improves its heat resistance simultaneously; In addition, the overlay cladding 2 that valve head 3 circumference is arranged, this overlay cladding matches with air valve seat ring, effectively can improve the wearing and tearing of valve head 3.
In the present embodiment, described annular groove 8 is arc surface with the surface of contact of overlay cladding 2, and this arc surface 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 the valve guide bushing that the dual-chamber washing sodium valve having helical blade with this coordinates is S
1, this dual-chamber washing sodium valve with helical blade 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
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 bar portion rushes upper end, sodium chamber 9 and extends to valve end and to be communicated with outward with valve stem and valve stem outer end is fixedly connected with valve plug screw by screw thread, 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 and more easily processes, and is also easy on the other hand fill sodium metal.
In the present embodiment, described valve plug screw is circumferentially provided with rod slot 7 and rod slot 7 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 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 (7)
1. one kind has the dual-chamber washing sodium valve of helical blade, comprise 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, described valve stem inside is axially arranged with cylindrical stem along it and rushes sodium chamber, be provided with the head rushing sodium chamber coaxial communication with bar portion in described valve head and rush sodium chamber and this head rushes sodium chamber is cone-shaped cavity and described head rushes sodium chamber internal diameter increases gradually from top to bottom, described bar portion rushes in sodium chamber to be radially provided with dividing plate and this bar portion is rushed sodium chamber and is separated to form ring runner, the lower end surface that described head rushes sodium chamber is the sphere protruded downwards, described bar portion rushes sodium chamber and head and rushes in sodium chamber and be filled with sodium.
2. the dual-chamber washing sodium valve with helical blade according to claim 1, is characterized in that: 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.
3. the dual-chamber washing sodium valve with helical blade according to claim 2, is characterized in that: the surface of contact of described annular groove and overlay cladding is arc surface.
4. the dual-chamber washing sodium valve with helical blade according to claim 3, is characterized in that: described valve head bottom surface is provided with the circular groove coaxial with valve head.
5. the dual-chamber washing sodium valve with helical blade according to claim 4, is characterized in that: the length of the valve guide bushing that the dual-chamber washing sodium valve having helical blade with this coordinates is S
1, this dual-chamber washing sodium valve with helical blade 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.
6. the dual-chamber washing sodium valve with helical blade according to claim 5, it is characterized in that: described bar portion rushes upper end, sodium chamber and extends to valve end and to be communicated with outward with valve stem and valve stem outer end is fixedly connected with valve plug screw by screw thread, and described bar portion is rushed sodium chamber and sealed by this valve plug screw.
7. the dual-chamber washing sodium valve with helical blade according to claim 6, is characterized in that: described valve plug screw is circumferentially provided with rod slot and rod slot diameter is less than valve collet internal diameter.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201510726462.6A CN105240080A (en) | 2015-10-30 | 2015-10-30 | Double-cavity sodium-filled valve with spiral blade |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201510726462.6A CN105240080A (en) | 2015-10-30 | 2015-10-30 | Double-cavity sodium-filled valve with spiral blade |
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CN105240080A true CN105240080A (en) | 2016-01-13 |
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Family Applications (1)
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CN201510726462.6A Pending CN105240080A (en) | 2015-10-30 | 2015-10-30 | Double-cavity sodium-filled valve with spiral blade |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105587359A (en) * | 2016-03-09 | 2016-05-18 | 广西玉柴机器股份有限公司 | Air inlet system of engine |
CN114856748A (en) * | 2022-05-07 | 2022-08-05 | 重庆乐瑞斯科技有限公司 | Self-adjusting exhaust valve |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1846800A (en) * | 1930-03-28 | 1932-02-23 | Masterbilt Motor Company | Internal air cooled exhaust valve |
FR817272A (en) * | 1936-05-09 | 1937-08-31 | Valve with self-rotating device for combustion or internal combustion engines | |
NL6615095A (en) * | 1965-10-29 | 1967-05-02 | ||
JPH04252822A (en) * | 1991-01-28 | 1992-09-08 | Toyota Motor Corp | Intake device for internal combustion engine of double intake valve type |
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 |
CN204402610U (en) * | 2014-12-19 | 2015-06-17 | 重庆奇甫机械有限责任公司 | Rush sodium valve |
CN205089399U (en) * | 2015-10-30 | 2016-03-16 | 重庆奇甫机械有限责任公司 | Automatically cleaning formula two -chamber is towards sodium valve |
-
2015
- 2015-10-30 CN CN201510726462.6A patent/CN105240080A/en active Pending
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1846800A (en) * | 1930-03-28 | 1932-02-23 | Masterbilt Motor Company | Internal air cooled exhaust valve |
FR817272A (en) * | 1936-05-09 | 1937-08-31 | Valve with self-rotating device for combustion or internal combustion engines | |
NL6615095A (en) * | 1965-10-29 | 1967-05-02 | ||
JPH04252822A (en) * | 1991-01-28 | 1992-09-08 | Toyota Motor Corp | Intake device for internal combustion engine of double intake valve type |
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 |
CN204402610U (en) * | 2014-12-19 | 2015-06-17 | 重庆奇甫机械有限责任公司 | Rush sodium valve |
CN205089399U (en) * | 2015-10-30 | 2016-03-16 | 重庆奇甫机械有限责任公司 | Automatically cleaning formula two -chamber is towards sodium valve |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105587359A (en) * | 2016-03-09 | 2016-05-18 | 广西玉柴机器股份有限公司 | Air inlet system of engine |
CN114856748A (en) * | 2022-05-07 | 2022-08-05 | 重庆乐瑞斯科技有限公司 | Self-adjusting exhaust valve |
CN114856748B (en) * | 2022-05-07 | 2023-10-13 | 珠海安瑾动力科技有限公司 | self-adjusting exhaust valve |
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Application publication date: 20160113 |