CN104315149A - Dynamic sealing structure resistant to high temperature and high pressure - Google Patents
Dynamic sealing structure resistant to high temperature and high pressure Download PDFInfo
- Publication number
- CN104315149A CN104315149A CN201410577551.4A CN201410577551A CN104315149A CN 104315149 A CN104315149 A CN 104315149A CN 201410577551 A CN201410577551 A CN 201410577551A CN 104315149 A CN104315149 A CN 104315149A
- Authority
- CN
- China
- Prior art keywords
- sealing
- sealing structure
- high temperature
- guide sleeve
- seal ring
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1457—Piston rods
- F15B15/1461—Piston rod sealings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1438—Cylinder to end cap assemblies
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1471—Guiding means other than in the end cap
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3204—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3284—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings characterised by their structure; Selection of materials
Abstract
The invention discloses a dynamic sealing structure resistant to high temperature and high pressure. The dynamic sealing structure which comprises a plunger cylinder block. A plunger is disposed in the plunger cylinder block. A guide sleeve sleeves the plunger. A pressing cap sleeves the rear end of the guide sleeve. A first sealing ring is disposed at the front end of the guide sleeve. A flat gasket is disposed at the rear end of the first sealing ring. A triangular gasket is disposed between the flat gasket and the guide sleeve. An inner lip is disposed at the inner edge of the front end of the first sealing ring. An outer lip is disposed at the outer edge of the front end of the first sealing ring. The dynamic sealing structure has the advantages that the structure is resistant to the high temperature of 300 DEG C and the high pressure of 200MPa, and the sealing structure is effective, reliable and long in sealing service life; a sealing ring is made of the mixture of teflon, carbon and graphite, the temperature resistance and mechanical strength problems of the sealing ring are effectively solved, and the sealing structure can satisfy technical requirements; the sealing structure is simple in structure, few in sealing parts, high in reliability, low in design and manufacturing cost, easy to maintain and long in sealing service life.
Description
Technical field
The present invention relates to a kind of sealing configuration, be specifically related to a kind of high temperature high voltage resistant self tightening movable sealing structure.
Background technique
The basic training of hydraulic sealing structure is with being stop or the sewing of confined liquid.Existing movable sealing structure, as piston sealing structure, the pressure of usual seal fluid is no more than 30MPa, and temperature is no more than 80 DEG C, and therefore, ring structure generally adopts molded sealing ring such as "○" type circle, " V " type circle to seal.In the supporting pressurized machine plunger sealing structure of cold isostatic press, sealing load can reach 200MPa, but sealing medium temperature is no more than 80 DEG C.Meanwhile, sealing configuration is comparatively complicated, and maintainability is poor, and manufacture cost is high.High pressure sealing pattern generally can be divided into three major types: (1) forced seal, is generally used for static seal; (2) semi-automatic seal, this structure also replace by the development of self-tightening sealing; (3) self-tightening sealing, as the sealing of "○" type circle, the sealing of " B " type ring, delta gasket closure, combination seal etc.After pressure raises, due to the structural feature of self-tightening sealing, the contact force of seal element and ultrahigh pressure cylindrical shell is more strengthened, seal more effective.Pressure is higher, and sealing effect is better.
Summary of the invention
Instant invention overcomes the deficiencies in the prior art, provide a kind of reliable, the life-span long, structure simple, manufacture easy to maintenance, the with low cost movable sealing structure tolerating 300 DEG C of high temperature and 200MPa high pressure.
For solving above-mentioned technical problem, the present invention by the following technical solutions:
A kind of high temperature high voltage resistant movable sealing structure, comprise plunger cylinder, be provided with plunger in described plunger cylinder, described plunger is socketed with guide sleeve, described guide sleeve rear end is socketed with pressure cap; Described guide sleeve front end is provided with the first seal ring, and described first seal ring rear end is provided with plain washer; Triangular washer is provided with between described plain washer and described guide sleeve; Described first seal ring front end inner edge is provided with epipharynx limit; Outer lip limit is provided with outside described first seal ring front end.
Further technological scheme be added with in carbon, graphite in the polytetrafluoroethylmaterial material of the first seal ring one or both.
Further technological scheme is added with carbon and graphite material in the polytetrafluoroethylmaterial material of the first seal ring.
Further technological scheme is plain washer is polytetrafluoroethylmaterial material, adds carbon and graphite in described polytetrafluoroethylmaterial material.
Further technological scheme is triangular washer is beryllium-bronze material.
Further technological scheme is guide sleeve is beryllium-bronze material.
Further technological scheme is pressure cap is be threaded with described plunger cylinder.
Compared with prior art, the invention has the beneficial effects as follows: high temperature high voltage resistant movable sealing structure of the present invention, can tolerate 300 DEG C of high temperature and 200MPa high pressure simultaneously, sealing configuration effectively, reliably, sealing life is long.Adopt teflon interpolation carbon and graphite as the material of seal ring, efficiently solve the problem of seal ring heatproof and mechanical strength, guarantee that sealing configuration meets technical requirements.This movable sealing structure is simple, and sealing component used are few, and reliability is high, and design and manufacture cost is low, and sealing configuration is easy to safeguard, sealing life is long.
Accompanying drawing explanation
Fig. 1 is the structural representation of one embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further elaborated.
As shown in Figure 1, Fig. 1 shows the structural representation of one embodiment of the invention.The present embodiment high temperature high voltage resistant movable sealing structure, comprises plunger cylinder 7, is provided with plunger 1 in plunger cylinder, plunger is socketed with guide sleeve 3, and guide sleeve rear end is socketed with pressure cap 2; Guide sleeve front end is provided with the first seal ring 6, first seal ring rear end and is provided with plain washer 5; Triangular washer 4 is provided with between plain washer and guide sleeve; First seal ring front end inner edge is provided with epipharynx limit; Outer lip limit is provided with outside first seal ring front end.Specific embodiment is, plunger 1 runs left, and under low pressure, the first seal ring 6 epipharynx limit and plunger periphery under the effect of elastic force compress, thus realize low pressure seal; When pressure raises, pressure oil acts on the inside and outside lip limit of the first seal ring 6, makes it to be close to plunger periphery and seal ring installation hole wall respectively, realizes high pressure sealing.In seal ring intensity region, pressure is larger, and the extruding force that in the first seal ring 6, outer lip limit is subject to is larger, and sealing effect is better, realizes self-energized seal.Meanwhile, the axial force that pressure oil acts on the first seal ring 6 generation is delivered to plain washer 5, triangular washer 4 and guide sleeve 3 by the first seal ring 6, finally acts on pressure cap.
Plain washer 5 plays the effect of isolation first seal ring 6 and guide sleeve 3, and preferably the first seal ring is nonmetallic material; Guide sleeve is metallic material; Under high pressure, plain washer 6 also plays the effect preventing the first seal ring 6 from extruding.Under high pressure, triangular washer 4 plays and prevents from extruding and the effect of high pressure sealing.
Movable sealing structure should bear the high temperature of 300 DEG C and the high pressure of 200MPa, harsher to the requirement of sealed material.Primary is heatproof, and sealed material should possess resistant to elevated temperatures performance, and at high temperature also has enough mechanical strengths, to ensure the integrity of seal ring and sealing configuration.Secondly, sealed material should have certain plasticity and elastic deformability, guarantees to make sealing surface well bonded to each other by resiliently deformable under ultrahigh pressure, ensures sealing effect.Plunger is in to-and-fro motion, and sealed material also should have higher wear resistance and self lubricity, to ensure the working life sealed.In addition, sealed material also should have good compatibility with sealing medium.
As preferred embodiment, in the present embodiment, the first seal ring 6 main material is chosen as teflon interpolation carbon and graphite.This material has higher mechanical strength, can guarantee to be sealed in when bearing axial force to be sealed with validity, and serviceability temperature can reach 340 DEG C, uses pressure to reach 300MPa, has self lubricity, be suitable for reciprocating motive sealing.Plain washer 5 material therefor also selects teflon to add carbon and graphite.The material of triangular washer 4 and guide sleeve 3 is all chosen as beryllium bronze.
First seal ring 6 is easily damaged parts, for guaranteeing that sealing is changed conveniently, the pressure cap 2 bearing axial force of sealing configuration is designed to the connection of plunger cylinder the form of being threaded, and after the first seal ring 6 reaches working life, only needs dismounting pressure cap 2 and related components can carry out sealing and changes and safeguard.
The feature of this sealing configuration and technological difficulties are 300 DEG C, motive sealing under 200MPa high temperature and high pressure condition, select self-fastening sealing structure and the sealed material that meets the demands to be achieved.Wherein, when system is in lower pressure, sealing configuration is sealed by the elastic force of seal ring; When system is in hyperpressure, self-energized seal principle is adopted to realize high pressure sealing requirement.
Spoken of in this manual " embodiment ", " another embodiment ", " embodiment ", etc., refer to the specific features, structure or the feature that describe in conjunction with this embodiment and be included at least one embodiment of the application's generality description.Multiple place occurs that statement of the same race is not necessarily refer to same embodiment in the description.Furthermore, when describing specific features, structure or a feature in conjunction with any one embodiment, what advocate is also fall within the scope of the invention to realize this feature, structure or feature in conjunction with other embodiments.
Although with reference to the multiple explanatory embodiment invented, invention has been described here, but, should be appreciated that, those skilled in the art can design a lot of other amendment and mode of execution, these amendments and mode of execution will drop within spirit disclosed in the present application and spirit.More particularly, in the scope of the open claim of the application, multiple modification and improvement can be carried out to the constituent elements of subject combination layout and/or layout.Except the modification of carrying out constituent elements and/or layout is with except improvement, to those skilled in the art, other purposes also will be obvious.
Claims (8)
1. a high temperature high voltage resistant movable sealing structure, comprises plunger cylinder, is provided with plunger in described plunger cylinder, and described plunger is socketed with guide sleeve, and described guide sleeve rear end is socketed with pressure cap; It is characterized in that: described guide sleeve front end is provided with the first seal ring, described first seal ring rear end is provided with plain washer; Triangular washer is provided with between described plain washer and described guide sleeve; Described first seal ring front end inner edge is provided with epipharynx limit; Outer lip limit is provided with outside described first seal ring front end.
2. high temperature high voltage resistant movable sealing structure according to claim 1, is characterized in that the first described seal ring is polytetrafluoroethylmaterial material.
3. high temperature high voltage resistant movable sealing structure according to claim 1, it is characterized in that being added with in the polytetrafluoroethylmaterial material of the first described seal ring in carbon, graphite one or both.
4. high temperature high voltage resistant movable sealing structure according to claim 3, is characterized in that being added with carbon and graphite material in the polytetrafluoroethylmaterial material of the first described seal ring.
5. high temperature high voltage resistant movable sealing structure according to claim 1, is characterized in that described plain washer is polytetrafluoroethylmaterial material, adds carbon and graphite in described polytetrafluoroethylmaterial material.
6. high temperature high voltage resistant movable sealing structure according to claim 1, is characterized in that described triangular washer is beryllium-bronze material.
7. high temperature high voltage resistant movable sealing structure according to claim 1, is characterized in that described guide sleeve is beryllium-bronze material.
8. high temperature high voltage resistant movable sealing structure according to claim 1, is characterized in that described pressure cap is be threaded with described plunger cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410577551.4A CN104315149A (en) | 2014-10-24 | 2014-10-24 | Dynamic sealing structure resistant to high temperature and high pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410577551.4A CN104315149A (en) | 2014-10-24 | 2014-10-24 | Dynamic sealing structure resistant to high temperature and high pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104315149A true CN104315149A (en) | 2015-01-28 |
Family
ID=52370426
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410577551.4A Pending CN104315149A (en) | 2014-10-24 | 2014-10-24 | Dynamic sealing structure resistant to high temperature and high pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104315149A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107387391A (en) * | 2017-07-25 | 2017-11-24 | 盐城美希密封件有限公司 | A kind of static seal device of auto pump |
| CN107448607A (en) * | 2017-08-30 | 2017-12-08 | 武汉海王机电工程技术公司 | A kind of sealing structure of downhole tool experimental rig |
| CN107542722A (en) * | 2017-07-25 | 2018-01-05 | 盐城美希密封件有限公司 | A kind of high temperature high voltage resistant movable sealing structure |
| CN108204456A (en) * | 2016-12-20 | 2018-06-26 | 赫伯特·汉切恩两合公司 | The sealing ring of the component of energy translational adjustment |
| CN108757430A (en) * | 2018-08-16 | 2018-11-06 | 中船勘察设计研究院有限公司 | The leak-proof device of reciprocating pump |
| CN110701131A (en) * | 2019-09-23 | 2020-01-17 | 燕山大学 | Graphite self-lubricating device for sealing piston rod of air cylinder |
| WO2020058102A1 (en) * | 2018-09-20 | 2020-03-26 | Liebherr-Components Kirchdorf GmbH | Piston-cylinder unit for a work machine |
| CN111589390A (en) * | 2020-06-02 | 2020-08-28 | 无锡职业技术学院 | Shaft seal device suitable for stirring shaft of ultrahigh pressure reaction kettle |
| CN112145709A (en) * | 2020-10-28 | 2020-12-29 | 宁波市鄞州超杰汽车零部件有限公司 | Speed regulating valve |
| CN114321088A (en) * | 2021-12-31 | 2022-04-12 | 山东福阳液压科技有限公司 | Front-mounted dumper double-channel sealing hydraulic oil cylinder |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108204456B (en) * | 2016-12-20 | 2021-03-26 | 赫伯特·汉切恩两合公司 | Sealing ring for translationally adjustable components |
| CN108204456A (en) * | 2016-12-20 | 2018-06-26 | 赫伯特·汉切恩两合公司 | The sealing ring of the component of energy translational adjustment |
| CN107542722A (en) * | 2017-07-25 | 2018-01-05 | 盐城美希密封件有限公司 | A kind of high temperature high voltage resistant movable sealing structure |
| CN107387391A (en) * | 2017-07-25 | 2017-11-24 | 盐城美希密封件有限公司 | A kind of static seal device of auto pump |
| CN107448607A (en) * | 2017-08-30 | 2017-12-08 | 武汉海王机电工程技术公司 | A kind of sealing structure of downhole tool experimental rig |
| CN108757430A (en) * | 2018-08-16 | 2018-11-06 | 中船勘察设计研究院有限公司 | The leak-proof device of reciprocating pump |
| WO2020058102A1 (en) * | 2018-09-20 | 2020-03-26 | Liebherr-Components Kirchdorf GmbH | Piston-cylinder unit for a work machine |
| CN110701131A (en) * | 2019-09-23 | 2020-01-17 | 燕山大学 | Graphite self-lubricating device for sealing piston rod of air cylinder |
| CN111589390A (en) * | 2020-06-02 | 2020-08-28 | 无锡职业技术学院 | Shaft seal device suitable for stirring shaft of ultrahigh pressure reaction kettle |
| CN111589390B (en) * | 2020-06-02 | 2021-10-26 | 无锡职业技术学院 | Shaft seal device suitable for stirring shaft of ultrahigh pressure reaction kettle |
| CN112145709A (en) * | 2020-10-28 | 2020-12-29 | 宁波市鄞州超杰汽车零部件有限公司 | Speed regulating valve |
| CN114321088A (en) * | 2021-12-31 | 2022-04-12 | 山东福阳液压科技有限公司 | Front-mounted dumper double-channel sealing hydraulic oil cylinder |
| CN114321088B (en) * | 2021-12-31 | 2024-02-23 | 山东福阳液压科技有限公司 | Double-channel sealing hydraulic cylinder of front dump truck |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150128 |
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| RJ01 | Rejection of invention patent application after publication |