CN204458076U - The airtight piston of elasticity - Google Patents
The airtight piston of elasticity Download PDFInfo
- Publication number
- CN204458076U CN204458076U CN201520077372.4U CN201520077372U CN204458076U CN 204458076 U CN204458076 U CN 204458076U CN 201520077372 U CN201520077372 U CN 201520077372U CN 204458076 U CN204458076 U CN 204458076U
- Authority
- CN
- China
- Prior art keywords
- piston
- auxiliary seal
- seal chamber
- elastic packing
- packing groove
- 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
Landscapes
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The utility model relates to a kind of piston, the airtight piston of especially a kind of elasticity.At head sheathed high-nickel austenitic cast iron edge circle, the side of high-nickel austenitic cast iron edge circle is provided with the elastic packing groove for card piston ring of a wedge shape, and elastic packing groove is large towards the size of piston crown side surface direction, reduces extension gradually to center.Said structure is provided with a high-nickel austenitic cast iron edge circle at head, and be provided with the elastic packing groove of a wedge shape, when piston ring is stuck in elastic packing groove, expanded by heating or cooling, the elastic packing groove of wedge shape can regulate the pressure to piston ring automatically, thus ensures tightness, and high-nickel austenitic cast iron edge circle then improves wear resistance, corrosivity, hardness, the state of piston can be made steady in a long-term, make working state more stable.
Description
Technical field
The utility model relates to a kind of piston, the airtight piston of especially a kind of elasticity.
Background technique
Along the reciprocating mechanical parts of cylinder body axis in the cylinder body of the machineries such as stroke piston combustion engine (see internal-combustion engine), compressor and pump.Piston has disc, cylindrical and cylindrical shape 3 kinds of forms.In internal-combustion engine, piston work done under the promotion of high-temperature high-pressure fuel gas.In compressor and pump, piston applies pressure to the fluid in cylinder body under external force, flows to cause fluid and improves its pressure.In oil hydraulic cylinder, piston work done under the promotion of pressure oil.The Closed End of piston bears the pressure of working fluid, and forms firing chamber or minimum cylinder volume with cylinder cap, casing wall.Piston ring or colloid seal circle piston be equipped with in case fluid is leaked.Piston can cylinder iron, the material manufacture such as forged steel, cast steel or aluminum alloy.In internal-combustion engine, in order to reduce quality and the inertial force of piston.
The piston of especially supercharging occasion directly contacts with high-temperature gas, and transient temperature can reach more than 2500K, and therefore, be heated serious, and radiating condition is very poor, so temperature is very high during pistons work, top is up to 600 ~ 700K, and temperature distribution is very uneven; Owing to there is the factor of expanded by heating and unbalance stress, can cause wearing and tearing, tightness reduces, and affects the working efficiency of piston.
Model utility content
The purpose of this utility model is, provides the elasticity that a kind of tightness is stablized, working efficiency is stable airtight piston.
The utility model solves the technological scheme that its technical problem adopts: the airtight piston of a kind of elasticity, comprise head and skirt section, at head sheathed high-nickel austenitic cast iron edge circle, the side of high-nickel austenitic cast iron edge circle is provided with the elastic packing groove for card piston ring of a wedge shape, elastic packing groove is large towards the size of piston crown side surface direction, reduces extension gradually to center.
This is arranged on head and is provided with a high-nickel austenitic cast iron edge circle, and be provided with the elastic packing groove of a wedge shape, when piston ring is stuck in elastic packing groove, expanded by heating or cooling, the elastic packing groove of wedge shape can regulate the pressure to piston ring automatically, thus ensures tightness, and high-nickel austenitic cast iron edge circle then improves wear resistance, corrosivity, hardness, the state of piston can be made steady in a long-term, make working state more stable.
Of the present utility modelly to be set to further: be provided with an auxiliary seal chamber at apical head, be provided with a conical point of compression leg in the bottom in auxiliary seal chamber, the bottom in auxiliary seal chamber extends to piston crown side, forms the auxiliary seal chamber of ring-type.
This is arranged on apical head and arranges an auxiliary seal chamber, when mixed gas is lighted, by point compression leg guiding of taper, guides partial combustion pressure into piston crown side surface direction, guarantee activity tightness.
Of the present utility modelly to be set to further: in apical head plane, offer four balancing slits, the inwall of balancing slit is arc, and balancing slit is evenly distributed in around auxiliary seal chamber, and is communicated with auxiliary seal chamber.
This is arranged on apical head and offers four balancing slits, is to guide mixture combustion power section for sealing, can improve formation and the burning of mixed gas simultaneously equally.
Of the present utility modelly to be set to further: scribble one deck graphite coating in the side in skirt section, the cooling chamber of a sealing is set in piston crown inside, cooling intra-bladder instillation cold oil.
This is arranged on skirt section and graphites coating, not only reduce friction, and reduce noise, when various power is assisted bubble-tight time, will inevitably frictional force be increased, by this structure, reduce friction and ensure stable operation, improve frictional force situation, and cooling chamber, the situation of expanded by heating can be improved, avoid excessive expanding with heat and contract with cold to affect the tightness of piston.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present embodiment;
Fig. 2 is the sectional view of the present embodiment;
Fig. 3 is the plane view of the present embodiment;
Fig. 4 is the enlarged view of the present embodiment Elastic seal groove.
Embodiment
With reference to figure 1, Fig. 2, Fig. 3, Fig. 4 is known, the airtight piston of a kind of elasticity of the utility model, comprise head 1 and skirt section 2, at head 1 sheathed high-nickel austenitic cast iron edge circle 3, the side of high-nickel austenitic cast iron edge circle 3 is provided with the elastic packing groove 31 for card piston ring of a wedge shape, elastic packing groove 31 is large towards the size of piston crown 1 side surface direction, extension is reduced gradually to center, an auxiliary seal chamber 4 is provided with on head 1 top, a conical point of compression leg 41 is provided with in the bottom in auxiliary seal chamber 4, the bottom in auxiliary seal chamber 4 extends to piston crown 1 side, form the auxiliary seal chamber 4 of ring-type, head 1 top plan is offered four balancing slits 11, the inwall of balancing slit 11 is arc, balancing slit 11 is evenly distributed in auxiliary seal chamber 4 around, and be communicated with auxiliary seal chamber 4, one deck graphite coating 21 is scribbled in the side in skirt section 2, the cooling chamber 12 of a sealing is set in piston crown 1 inside, perfusion cold oil in cooling chamber 12.
Obviously, above-described embodiment is only used to done citing is clearly described, and the restriction not to mode of execution.To those of ordinary skill in the art, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all mode of executions.And thus the apparent change of extending out or variation be still in protection domain of the present utility model.
Claims (4)
1. the airtight piston of elasticity, comprise head and skirt section, it is characterized in that: at head sheathed high-nickel austenitic cast iron edge circle, the side of high-nickel austenitic cast iron edge circle is provided with the elastic packing groove for card piston ring of a wedge shape, elastic packing groove is large towards the size of piston crown side surface direction, reduces extension gradually to center.
2. according to the airtight piston of elasticity according to claim 1, it is characterized in that: be provided with an auxiliary seal chamber at apical head, be provided with a conical point of compression leg in the bottom in auxiliary seal chamber, the bottom in auxiliary seal chamber extends to piston crown side, forms the auxiliary seal chamber of ring-type.
3. according to the airtight piston of elasticity according to claim 2, it is characterized in that: in apical head plane, offer four balancing slits, the inwall of balancing slit is arc, and balancing slit is evenly distributed in around auxiliary seal chamber, and is communicated with auxiliary seal chamber.
4. according to the airtight piston of elasticity described in claim 1 or 2 or 3, it is characterized in that: scribble one deck graphite coating in the side in skirt section, the cooling chamber of a sealing is set in piston crown inside, cooling intra-bladder instillation cold oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520077372.4U CN204458076U (en) | 2015-02-04 | 2015-02-04 | The airtight piston of elasticity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520077372.4U CN204458076U (en) | 2015-02-04 | 2015-02-04 | The airtight piston of elasticity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204458076U true CN204458076U (en) | 2015-07-08 |
Family
ID=53664977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520077372.4U Expired - Fee Related CN204458076U (en) | 2015-02-04 | 2015-02-04 | The airtight piston of elasticity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204458076U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106801647A (en) * | 2017-01-25 | 2017-06-06 | 日照金港活塞有限公司 | One kind closing cooling chamber piston |
-
2015
- 2015-02-04 CN CN201520077372.4U patent/CN204458076U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106801647A (en) * | 2017-01-25 | 2017-06-06 | 日照金港活塞有限公司 | One kind closing cooling chamber piston |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104454226A (en) | Engine piston assembly | |
| CN207568722U (en) | A kind of biplate multiple-piece piston-ring | |
| CN105518356A (en) | Piston ring | |
| CN204458076U (en) | The airtight piston of elasticity | |
| CN204344302U (en) | A kind of engine piston assembly | |
| CN204458081U (en) | Efficient burning piston | |
| CN206419117U (en) | Piston and internal combustion engine for internal combustion engine | |
| CN203285559U (en) | Gasoline engine piston adapting to high detonation pressure | |
| CN108661820A (en) | A kind of split type piston stirling engine component | |
| CN204458080U (en) | All press combustion piston | |
| CN104454225A (en) | Engine piston | |
| CN204476585U (en) | Pressurized combustion piston | |
| CN204459126U (en) | The anticorrosion piston of high-performance | |
| CN203906109U (en) | Novel piston of internal combustion engine | |
| CN208650996U (en) | A kind of engine piston | |
| CN208934876U (en) | A kind of compression assembly and compressor | |
| CN204458075U (en) | Oil return piston | |
| CN205064111U (en) | L type multipiece ring for internal -combustion engine | |
| CN204003139U (en) | Piston for ethanol fuel engine | |
| CN201250713Y (en) | Piston and piston ring component for combustion engine | |
| CN204804967U (en) | A piston for on engine | |
| CN208982180U (en) | The drop weight steel pistons of diesel engine | |
| CN205315132U (en) | Cylinder jacket and combined sealing ring that cooperation was used thereof | |
| CN104100402A (en) | Diesel engine cylinder jacket structure | |
| CN205154423U (en) | Novel piston |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150708 Termination date: 20190204 |