CN103697092A - High-compressive hydraulic cylinder - Google Patents
High-compressive hydraulic cylinder Download PDFInfo
- Publication number
- CN103697092A CN103697092A CN201310750160.3A CN201310750160A CN103697092A CN 103697092 A CN103697092 A CN 103697092A CN 201310750160 A CN201310750160 A CN 201310750160A CN 103697092 A CN103697092 A CN 103697092A
- Authority
- CN
- China
- Prior art keywords
- seal ring
- seal
- ring
- groove
- simrit
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Abstract
The invention discloses a high-compressive hydraulic cylinder and belongs to the technical field of sealing application in wind generator brakes. The high-compressive hydraulic cylinder comprises a U-shaped cylinder body. The inner wall of the cylinder body is provided with a bottom guide circular groove, a seal ring groove and a dust ring groove from bottom to top. A guide ring is embedded into the bottom guide circular groove. A seal ring is embedded into the seal ring groove. The seal ring is a Simrit seal ring. A second seal ring groove is arranged between the seal ring groove and the dust ring groove. A second seal ring is embedded into the second seal ring groove. Hydraulic pressure in the cylinder body drives, from the lower portion of the Simrit seal ring, the Simrit seal ring to form hermetic fit with the surface of a piston; when the hydraulic pressure breaks through the Simrit seal ring, the inverted-V-shaped structure of the second seal ring blocks the hydraulic pressure, drives the hydraulic pressure to react on the upper portion of the Simrit seal ring and downwardly drives the Simrit seal ring, and under the action of upper and lower hydraulic pressures, the Simrit seal ring forms a stable seal structure.
Description
Technical field
The invention belongs to wind-driven generator device sealing applications technical field, relate in particular to a kind of high resistance hydraulic fluid cylinder pressure.
Background technique
Conventional oil hydraulic cylinder is comprised of end face, cylinder body, piston rod, piston and seal ring, and its key technology is the sealing technique to cylinder body, and its piston motive sealing adopts O type circle, lips dust ring to add Y-shaped ring and combined sealing component sealing technique for a long time.Wherein O type coil structures is anti-extrudability good, between piston rod and piston cavity inwall, can keep larger gap.This sealing configuration has good static and dynamic sealing performance, and frictional force is little, without creeping, without sticking phenomenon, and wear resistance is good, dimensionally stable, and temperature influence, does not have excellent buffer function to thump pressure, and structure is compact, and the ability of bearing lateral force is stronger; The sealing effect that lips dust ring adds Y-shaped ring comes from preload own, has increased the radially Mechanical Contact power of sealing at the pressure of runtime system; And the pre compressed magnitude of sealing lip when mounted, even also can obtain good sealing property under low pressure operating mode; Its good sealing effect, wear resistance be good, it is little to wear and tear, on heavy duty and the crooked not impact of piston rod, on features such as shock load do not affect.At O type circle, lips dust ring, add in the rubber seal sealing techniquies such as Y-shaped ring, working medium pressure makes it be adjacent to corresponding sealant surface and realizes sealing from seal ring external compression sealing circle body, seal element with seal relative movement in be easy to be damaged, very easily produce dielectric leakage.While adding Y-shaped ring class seal ring by assembling due to O type circle, lips dust ring, push modification generation prestressing force and reach sealing effect, seal ring, for a long time in modification state, easily produces permanent modification and loses elasticity, can not keep good sealing effect the long period.Because elastic material yield rate is low, O type circle, lips dust ring add the seal elements such as Y-shaped ring and can produce modification simultaneously, and medium passes through and mistake, seal failure.So pipe pressure height, does not all need a rigid material ring set supporting element.Combined sealing component adds on Y circle class seal ring basis and grows up at O type circle, lips dust ring in recent years, combined sealing component is in fact that O type circle and the lips dust ring of the alienation of rigid material ring set support ring are added to the seal rings such as Y type, it is substantially all the same that combined sealing component sealing mechanism and O type circle, lips dust ring add Y-shaped ring elastomeric material Sealing sealing mechanism, exist dielectric leakage problem always, sealing effect is not very good yet, can not resistance to very high pressure; Add the Sealings such as Y-shaped ring, the same wild effect producing because of rigid material support ring that there will be equally with O type circle, lips dust ring; Existing oil hydraulic cylinder easily produces dielectric leakage, and reliability, stability are low, and operating life is short.
Summary of the invention
In order to overcome the defect existing in prior art, the present invention aims to provide a kind of high resistance hydraulic fluid cylinder pressure, bears 2～5 times of pressure of pressure and air tight while making this pressure cylinder bear working state, reaches high measuring body effect.
The present invention is achieved by the following technical solutions:
A kind of high resistance hydraulic fluid cylinder pressure, comprise U-shaped cylinder body, cylinder body madial wall has bottom guiding annular groove, seal groove and dustproof ring recess from top to bottom, in the guiding annular groove of bottom, be inlaid with guide ring, in seal groove, be inlaid with seal ring, between seal groove and dustproof ring recess, also have secondary seal ring recess, in secondary seal ring recess, be inlaid with secondary seal circle.
Further, in order to bring into play the effect of seal ring seal fluid, described seal groove is U-shaped, and the seal ring of inlaying in it is sealed seal for this spy.Wherein said this spy is sealed seal and generally by a rubber o-ring and teflon circle, is combined, O type circle is force application element, enough sealing forces are provided, and teflon is enclosed to compensating action, its structure is anti-extrudability good, between piston rod and piston cavity inwall, can keep larger gap.This sealing configuration has good static and dynamic sealing performance, and frictional force is little, without creeping, without sticking phenomenon, and wear resistance is good, dimensionally stable, and temperature influence, does not have excellent buffer function to thump pressure, and structure is compact, and the ability of bearing lateral force is stronger;
Further, in order to reach high measuring body effect, described secondary seal ring recess is square structure, and it is partly square structure that its secondary seal circle is embedded in secondary seal ring recess, and its projection is reverse V-shaped structure.
Further, for to the high measuring body while, protect Si Mite seal ring, the projection of described secondary seal circle in cylinder body is than the length of seal ring.
Further, in order to reduce the effect of piston side shearing force to seal ring and secondary seal circle, prevent that seal ring and secondary seal circle performance are because of the effect of shearing force, and lose sealing effect, on described cylinder body madial wall, between secondary seal ring recess and dustproof ring recess, there is top guide annular groove, in it, be inlaid with guide ring.
Beneficial effect of the present invention is: by secondary seal circle is set on the seal ring in cylinder body, the projection of secondary seal circle is designed to reverse V-shaped, simultaneously long than the projection of seal ring, the bottom that hydraulic pressure in cylinder body is sealed seal from Si Te promotes this special seal ring and piston face formation sealing, when hydraulic pressure breaks through Si Mite seal ring, the reverse V-shaped structure of secondary seal circle is tackled hydraulic pressure, and promote hydraulic pressure reverse and act on the top that Si Te is sealed seal, and promote this spy downwards and be sealed seal, Si Te is sealed seal by the effect of upper and lower hydraulic pressure, form stable sealing configuration.Use Si Mite seal ring as seal ring, increased sealing structure of cylinder static and dynamic sealing performance, its have frictional force little, without creeping, without sticking phenomenon, wear resistance is good, dimensionally stable, not the feature such as temperature influence.Meanwhile, between secondary seal ring recess and dustproof groove, increase top guide annular groove and guide ring, reduced the lateral shear power of piston to the seal ring on cylinder side wall and secondary seal circle, guaranteed the performance of seal ring and secondary seal circle.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Wherein: 1-bottom guiding annular groove, 2-seal groove, 3-secondary seal ring recess, 4-top guide annular groove, the 5-ring recess that prevents dust, 6-guide ring, 7-seal ring, 8-secondary seal circle.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further illustrated:
A kind of high resistance hydraulic fluid cylinder pressure as shown in Figure 1, comprise U-shaped cylinder body, cylinder body madial wall has bottom guiding annular groove 1 from top to bottom, seal groove 2 and dustproof ring recess 5, in the guiding annular groove 1 of bottom, be inlaid with guide ring 6, seal groove 2 is U-shaped, in seal groove 2, be inlaid with seal ring 7, seal ring 7 is sealed seal for this spy, between seal groove 2 and dustproof ring recess 5, also has secondary seal ring recess 3, secondary seal ring recess 3 is square structure, in secondary seal ring recess 3, be inlaid with secondary seal circle 8, it is embedded in secondary seal ring recess 3 parts is square structure, projection is reverse V-shaped structure.
Wherein this spy is sealed seal and generally by a rubber o-ring and teflon circle, is combined, and O type circle is force application element, and enough sealing forces are provided, and teflon is enclosed to compensating action.Be applicable to sealing for hydraulic cylinder piston rod.Si Te envelope is single-acting sealing, is divided into this spy's envelope for this special envelope and piston rod for piston.The advantages such as it is low that Si Te envelope has frictional force, and nothing is creeped, and tripping force is little, high pressure resistant, and groove structure is simple.Current up-to-date model is this special envelope of 2K type, and material is configured to special health seal ring and O type circle (nitrile rubber or fluorine glue); This sealing configuration has good static and dynamic sealing performance, and frictional force is little, without creeping, without sticking phenomenon, and wear resistance is good, dimensionally stable, and temperature influence, does not have excellent buffer function to thump pressure, and structure is compact, and the ability of bearing lateral force is stronger.Si Mite seal ring is the parts that mainly bear hydraulic pressure.
The working principle of this oil hydraulic cylinder is: the bottom that the hydraulic pressure in cylinder body is sealed seal from Si Te promotes this special seal ring and piston face formation sealing, when hydraulic pressure breaks through Si Mite seal ring, the reverse V-shaped structure of secondary seal circle 8 is tackled hydraulic pressure, and promote hydraulic pressure reverse and act on the top that Si Te is sealed seal, and promote this spy downwards and be sealed seal, Si Te is sealed seal by the effect of upper and lower hydraulic pressure, forms stable sealing configuration.
In order to reach the effect of secondary seal circle 8, during design, by the reverse V-shaped structure of its projection than seal ring 7 projection in cylinder body long; The reverse V-shaped structure of secondary seal circle 8, by also reducing the effect of piston to the lateral shear power of Si Mite seal ring, has been protected the performance of Si Mite seal ring.Because secondary seal circle 8 is similar to the effect of Si Mite seal ring, so its material is also similar on selecting, select nitrile rubber or fluorine glue material to make.
In order to reduce the effect of piston side shearing force to seal ring and secondary seal circle, prevent that seal ring and secondary seal circle performance are because of the effect of shearing force, and lose sealing effect, on cylinder body madial wall, between secondary seal ring recess 3 and dustproof ring recess 5, there is top guide annular groove 4, in it, be inlaid with guide ring 6.
While testing with this oil hydraulic cylinder, the medium of selecting is air, when bearing the pressure of 4 MPas, its oil hydraulic cylinder can not leak gas, and in working order time, 1.5 MPas are oil-proof can meet usage requirement, and how a lot of the requirement under air ratio liquid condition is, so illustrate that the crushing resistance of this oil hydraulic cylinder is large, can meet the needs of the break of high load.
Above-described embodiment is only explanation technical conceive of the present invention and feature; its objective is to allow and be familiar with these those skilled in the art and can understand content of the present invention and implement according to this; can not limit the scope of the invention with this; all equivalents or modification that according to the present invention, spirit essence has been done, all should contain in protection scope of the present invention.
Claims (5)
1. a high resistance hydraulic fluid cylinder pressure, comprise U-shaped cylinder body, cylinder body madial wall has bottom guiding annular groove (1), seal groove (2) and dustproof ring recess (5) from top to bottom, in bottom guiding annular groove (1), be inlaid with guide ring (6), in seal groove (2), be inlaid with seal ring (7), it is characterized in that: on described cylinder body madial wall, between seal groove (2) and dustproof ring recess (5), also have secondary seal ring recess (3), in secondary seal ring recess (3), be inlaid with secondary seal circle (8).
2. described high resistance hydraulic fluid cylinder pressure according to claim 1, is characterized in that: described seal groove (2) is U-shaped, and the seal ring of inlaying in it (7) is sealed seal for this spy.
3. described high resistance hydraulic fluid cylinder pressure according to claim 1, it is characterized in that: described secondary seal ring recess (3) is square structure, its secondary seal circle (8) is embedded in secondary seal ring recess (3) part for square structure, and its projection is reverse V-shaped structure.
4. described high resistance hydraulic fluid cylinder pressure according to claim 1, is characterized in that: on described cylinder body madial wall, between secondary seal ring recess (3) and dustproof ring recess (5), have top guide annular groove (4), be inlaid with guide ring (6) in it.
5. described high resistance hydraulic fluid cylinder pressure according to claim 1, is characterized in that: the projection of described secondary seal circle (8) in cylinder body is than the length of seal ring (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310750160.3A CN103697092A (en) | 2013-12-31 | 2013-12-31 | High-compressive hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310750160.3A CN103697092A (en) | 2013-12-31 | 2013-12-31 | High-compressive hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103697092A true CN103697092A (en) | 2014-04-02 |
Family
ID=50358725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310750160.3A Pending CN103697092A (en) | 2013-12-31 | 2013-12-31 | High-compressive hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103697092A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104525300A (en) * | 2014-12-31 | 2015-04-22 | 浙江浙矿重工股份有限公司 | Hydraulic lifting mechanism of cone crusher |
| CN112236603A (en) * | 2018-05-29 | 2021-01-15 | 日立汽车系统株式会社 | Disc brake |
| CN115182944A (en) * | 2022-06-10 | 2022-10-14 | 陕西法士特齿轮有限责任公司 | Intermediate shaft brake sealing and positioning structure and intermediate shaft brake |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH069444Y2 (en) * | 1986-06-18 | 1994-03-09 | 日新電機株式会社 | Gas insulated neutral point grounding resistor |
| CN201059300Y (en) * | 2007-06-21 | 2008-05-14 | 蓬莱金创集团公司 | Plunger type hydraulic cylinder for copper ingot smelting furnace |
| US20120110994A1 (en) * | 2010-11-05 | 2012-05-10 | Der-San Chen | Sealed Master Cylinder and Plunger of Vehicle Hydraulic-Brake System |
| CN102748339A (en) * | 2012-06-27 | 2012-10-24 | 山东瀚得液压机械有限公司 | Single-action telescopic sleeve hydraulic cylinder sealing protective device |
| CN202707674U (en) * | 2012-08-10 | 2013-01-30 | 中船重工中南装备有限责任公司 | Novel hydraulic cylinder |
| CN203756811U (en) * | 2013-12-31 | 2014-08-06 | 贵州永兴风能制动器有限责任公司 | Hydraulic cylinder with secondary sealing structure |
-
2013
- 2013-12-31 CN CN201310750160.3A patent/CN103697092A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH069444Y2 (en) * | 1986-06-18 | 1994-03-09 | 日新電機株式会社 | Gas insulated neutral point grounding resistor |
| CN201059300Y (en) * | 2007-06-21 | 2008-05-14 | 蓬莱金创集团公司 | Plunger type hydraulic cylinder for copper ingot smelting furnace |
| US20120110994A1 (en) * | 2010-11-05 | 2012-05-10 | Der-San Chen | Sealed Master Cylinder and Plunger of Vehicle Hydraulic-Brake System |
| CN102748339A (en) * | 2012-06-27 | 2012-10-24 | 山东瀚得液压机械有限公司 | Single-action telescopic sleeve hydraulic cylinder sealing protective device |
| CN202707674U (en) * | 2012-08-10 | 2013-01-30 | 中船重工中南装备有限责任公司 | Novel hydraulic cylinder |
| CN203756811U (en) * | 2013-12-31 | 2014-08-06 | 贵州永兴风能制动器有限责任公司 | Hydraulic cylinder with secondary sealing structure |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104525300A (en) * | 2014-12-31 | 2015-04-22 | 浙江浙矿重工股份有限公司 | Hydraulic lifting mechanism of cone crusher |
| CN112236603A (en) * | 2018-05-29 | 2021-01-15 | 日立汽车系统株式会社 | Disc brake |
| CN112236603B (en) * | 2018-05-29 | 2022-10-28 | 日立安斯泰莫株式会社 | Disc brake |
| CN115182944A (en) * | 2022-06-10 | 2022-10-14 | 陕西法士特齿轮有限责任公司 | Intermediate shaft brake sealing and positioning structure and intermediate shaft brake |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203756811U (en) | Hydraulic cylinder with secondary sealing structure | |
| CN103697092A (en) | High-compressive hydraulic cylinder | |
| CN201801346U (en) | Novel hydraulic jack | |
| CN202188132U (en) | Elastic O-shaped sealing ring for mechanical seal | |
| CN201358715Y (en) | Oil roller bit floating sealing device | |
| CN204061903U (en) | The rod seal of ultrahigh pressure new type compound | |
| CN101598158A (en) | A kind of embedded copper sleeve type hydraulic oil cylinder guide sleeve | |
| CN202100754U (en) | Metal sealing ball valve | |
| CN204532795U (en) | The floating type intermediate draw bar sealing configuration of a kind of drilling pump | |
| CN201162820Y (en) | Elastic sealing ring | |
| CN201496343U (en) | Guide sleeve for hydraulic oil cylinder | |
| CN201795040U (en) | Oil seal | |
| CN201982652U (en) | Flange gasket | |
| CN201795047U (en) | High-pressure resistant composite drum-type sealing ring | |
| CN205908796U (en) | High temperature ball valve seat seal structure that floats | |
| CN202689941U (en) | Eccentric constant-width seal groove of cone bit | |
| CN112049833A (en) | Novel hydraulic and pneumatic combined control cylinder of hydraulic hammer and sealing form | |
| CN201265653Y (en) | Three-in-one oil seal | |
| CN103697015B (en) | A kind of lightning protection, anti-shearing hydraulic cylinder device | |
| CN202252315U (en) | Self-operated valve rod sealing structure | |
| CN202441888U (en) | Hydraulic cylinder static seal structure and hydraulic cylinder | |
| CN200961464Y (en) | Compensation expansion type affusion packer | |
| CN204493666U (en) | A kind of oil sealing base | |
| CN204083346U (en) | Combine the fixing ball valve seat sealing configuration of self-sealed filler | |
| CN101776147A (en) | Dynamic seal structure with automatic compensation function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140402 |