CN104832646A - Sleeve sealing assembly - Google Patents
Sleeve sealing assembly Download PDFInfo
- Publication number
- CN104832646A CN104832646A CN201510148141.2A CN201510148141A CN104832646A CN 104832646 A CN104832646 A CN 104832646A CN 201510148141 A CN201510148141 A CN 201510148141A CN 104832646 A CN104832646 A CN 104832646A
- Authority
- CN
- China
- Prior art keywords
- seal ring
- sleeve
- connecting stud
- boss
- bulge loop
- 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.)
- Granted
Links
Classifications
-
- 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
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
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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
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/08—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with exclusively metal packing
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gasket Seals (AREA)
Abstract
The invention discloses a sleeve sealing assembly, which comprises a pipe (1), a connecting stud (2), a nut (3), a sleeve (4) and a sealing ring (5) are coaxially arranged, wherein an annular boss (11) is arranged on the external surface of the pipe, a bulge loop (12) is arranged on one side of the annular boss (11), one side of the sealing ring (5) abuts against the bulge loop (12), the other side of the sealing ring (5) abuts against the connecting stud (2), and the nut (3) sleeves outside the connecting stud (2) and the sleeve (4). The sleeve sealing assembly is simple in structure, and convenient for mounting and dismounting, and can be repeatedly usable. The sleeve sealing assembly is suitable for wider scope from room temperatures to low temperatures, and is excellent in sealing performance.
Description
Technical field
The present invention relates to a kind of seal arrangement, especially relate to a kind of bobbin seal assembly.
Background technique
The bobbin seal assembly in refrigeration & cryogenic engineering field, owing to having difference greatly under material property change and normal temperature under low temperature environment, need specialized designs, and it is quick to meet connection disassembling, structure is simple, the feature of good seal performance.Conventional rubber seal, in low temperature situation particularly profound hypothermia occasion such as liquid nitrogen temperature (80K, less than-193 DEG C), often embrittlement and lose sealing.In addition, current existing sealing technique and structure be sealed by the forming surface that closely cooperates in face and face mostly, and for mechanical seal, linear sealing have less area and larger pressure, and sealing will be got well compared to face sealing.Therefore, need a kind of dismountable black box that can adapt to profound hypothermia, good seal performance, meet the needs of some particular application and Practical Project.
In prior art, existing low temperature resistant seal ring, Chinese patent CN102767572A discloses a kind of low temperature resistant seal ring for double-row full-complement cylinder roller bearing, this structure comprises silicone rubber O-ring and supporting steel skeleton is buckled into an entirety by the mode of injection moulding, possesses lower temperature resistance and double seal.Although silicone rubber relative to its lower temperature resistance of General Purpose Rubber very well, is not still suitable for liquid nitrogen temperature, when temperature just starts embrittlement lower than when-120 DEG C.Chinese patent CN203500516U discloses a kind of low temperature seal valve, the Double-conical-surface sealing pair that this structure mainly adopts sylphon seal and soft and hard seal to combine, and can not only be applied to liquid nitrogen, liquid oxygen occasion, and good seal performance.But this structure side overweights and solves valves leakage problem, can not solve being connected and fixed and sealing problem of pipeline.
Chinese patent CN102252140A discloses the SEALING FITTING of the nonmetal pipeline of a kind of profound hypothermia, sealing joint comprises nut, metal o-ring, connecting stud and nonmetal connecting pipeline, mainly utilizing pipeline external structure to produce radial force makes metal o-ring deformation contact with intimate, thus reaches the effect of sealing.This structure solves the connectivity problem of metal and nonmetal pipeline, good sealing effect, is applicable to room temperature to profound hypothermia in a big way.But the contact between metal o-ring and connecting pipeline outer surface is face contact, feature due to its plane sealing makes its sealing force larger, the steering force needed is also larger, and at room temperature by larger radial force extruding after close contact, entering profound hypothermia environment due to the thermal expansion coefficient of nonmetallic material is greater than metallic material, and metal o-ring and connecting pipeline exterior surface too closely and likely damage parts.
Summary of the invention
The invention provides one and can be used in low temperature environment, good seal performance, structure is simple, mounts and dismounts bobbin seal assembly easily.
For this reason, the present invention is by the following technical solutions: a kind of bobbin seal assembly, comprise coaxially arranged pipeline, nut, connecting stud, seal ring and sleeve, pipeline outer surface has an annular boss, there is a bulge loop boss side, seal ring side props up bulge loop, and opposite side props up connecting stud; Nut sleeve is outside connecting stud and sleeve.
The present invention coordinates by seal ring and pipeline and sleeve the seal action playing this bobbin seal assembly, by precession connecting stud, make to produce relative movement between connecting stud and nut, crush seal circle, the bulge loop of the boss side surfaces of pipeline outer surface presses closer seal ring, reaches good sealing effect; By screwing out connecting stud, i.e. this bobbin seal assembly detachable, and seal ring can be taken off change.
As preferably, sleeve matches with boss partly to stretch out and forms neck boss, along the side-fit with this neck boss in nut, avoid and come attaching nut and sleeve by the brought into close surface contact of nut internal surface and sleeve outer surface, reduce steering force, make simple to operate, decrease the wearing and tearing that surface friction brings simultaneously, improve assembly working life.
As preferably, seal ring is circular cone, on seal ring, end face props up bulge loop, seal ring bottom surface props up connecting stud, the primary and secondary face of seal ring is contacted with the port linear of sleeve pipe, because linearly contact has less area and larger pressure, sealing will be got well compared to surface contact, more improves sealability.
As preferably, the range of taper of seal ring is 30 degree of-45 degree, and seal ring can be avoided like this to cause deformation too small because tapering is excessive, avoids seal ring to cause because tapering is too small effective sealing not enough simultaneously, optimizes sealing ring tightness energy.
As preferably, the cross section of boss is rectangle, guarantees that seal ring upper-end surface only contact with bulge loop, directly can not touch the side of boss, reduce area of contact, raising sealability.
As preferably, bulge loop is positioned on the center side line of boss, make seal ring and bulge loop contact even, improve sealability.
As preferably, bulge loop cross section is triangle, and triangle is conducive to the area of contact reducing seal ring upper-end surface and bulge loop, and bulge loop is contacted close to linear with the close contact of seal ring upper-end surface, raising sealability.
As preferably, pipeline, connecting stud, nut, sleeve and sealing ring material are metal, and wherein sealing ring material is oxygen free copper.According to metal at low temperatures performance generally can not there is the characteristic of drastic change, this bobbin seal assembly has reliability at low temperature environment.And sealing ring material is oxygen free copper, resistance to low temperature is good, and simultaneously quality is softer, and sleeve and piping material are stainless steel, and quality is comparatively hard, and seal ring and sleeve and pipeline form soft or hard compound seal, good seal performance.Because the thermal expansion coefficient of copper is relatively large in a metal, the contraction ratio pipeline of low temperature environment lower seal is violent, makes the contact of seal ring and pipeline more tight, guarantees this bobbin seal assembly sealability at low ambient temperatures.
Therefore, adopt bobbin seal assembly of the present invention, good seal performance, in a big way, sealing is temperature influence to be not applicable to from room temperature to low temperature (liquid nitrogen temperature), and structure is simple; The present invention is detachable low temperature seal parts in addition, and installation and removal are convenient, and oxygen free copper seal ring is replaceable, reusable.
Accompanying drawing explanation
Fig. 1 is the structural representation of bobbin seal assembly of the present invention.
Fig. 2 is the partial enlarged drawing of the part A of the assembly of bobbin seal shown in Fig. 1.
Wherein:
1, pipeline; 2, connecting stud; 3, nut; 4, sleeve; 5, seal ring; 11, boss; 12, bulge loop; 41, neck boss.
Embodiment
Shown in Fig. 1, Fig. 2, bobbin seal assembly of the present invention comprises coaxially arranged pipeline 1, connecting stud 2, nut 3, sleeve 4 and seal ring 5.The material of pipeline 1, connecting stud 2, nut 3, sleeve 4 and seal ring 5 is metal, and wherein seal ring 5 material is oxygen free copper, and sleeve 4 and pipeline 1 are stainless steel.
Pipeline 1 outer surface has the boss 11 of a coaxial annular, and the cross section of boss 11 in the plane at place, pipeline 1 axle center is rectangle; Boss 11 is provided with a bulge loop 12 coaxial with pipeline 1 towards the side of connecting stud 2, the cross section of bulge loop 12 in the plane at place, pipeline 1 axle center is triangle, forms denation, end face close contact on this projection and seal ring during assembling.Bulge loop 12 is positioned on boss 11 center side line, and namely in pipeline 1 radial direction, bulge loop 12 is located at boss 11 side medium position.
Seal ring 5 is the circular cone of annular, and be set in pipeline 1 outer wall, tapering is 30 degree; Two end faces of seal ring 5 are upper end face and bottom surface respectively, and outer wall is primary and secondary face; The upper end face of seal ring 5 is enlarged diameter section, and bottom surface is smaller diameter end; On seal ring 5, end face props up bulge loop 12, and seal ring 5 bottom surface props up connecting stud 2.Seal ring 5 material is oxygen free copper, and quality is softer, forms soft or hard compound seal with sleeve 4 and pipeline 1.Through the extruding of connecting stud 2 during assembling, bulge loop 12 close contact of the upper end face of seal ring 5 and the boss 11 of pipeline 1, forms linear sealing, the primary and secondary face of seal ring 5 and sleeve 4 towards the end side of connecting stud 2 along close contact, formation linear sealing.
In the present embodiment, sleeve 4 can be the end needing the pipeline be connected with pipeline 1, also can be the connecting end etc. of a certain parts.Sleeve 4 matches with the primary and secondary face of seal ring 5 partly to stretch out and forms neck boss 41, along the side-fit with neck boss 41 in nut 3.Connecting stud 2 and sleeve 4 are all set in pipeline 1 outer wall, and connecting stud 2 outer wall is provided with outside thread.Connecting stud 2 and sleeve 4 are separately positioned on seal ring 5 both sides.Nut 3 is set in connecting stud 2 and sleeve 4 two ends in opposite directions, coordinates respectively locate with the outside thread of connecting stud 2 outer wall and the neck boss 41 of sleeve 4.
During installation, by coaxially arranged in order to pipeline 1, connecting stud 2, nut 3, sleeve 4 and seal ring 5, precession connecting stud 2, make to produce relative movement between connecting stud 2 and nut 3, crush seal circle 5, make the upper end face of seal ring 5 tightly prop up bulge loop 12 and produce linear sealing, the primary and secondary face of seal ring 5 tightly props up sleeve 4 port and produces linear sealing; When connecting stud 2 screws, the installation of this bobbin seal assembly, can meet seal request.During dismounting, screw out connecting stud 2, pipeline 1, connecting stud 2, nut 3, sleeve 4 and seal ring 5 can be pulled down.When seal ring 5 deformation loses more greatly sealing effect, screw out connecting stud 2, take off seal ring 5 and change, then precession connecting stud 2 re-starts installation steps, be i.e. reusable bobbin seal assembly.
Claims (8)
1. a bobbin seal assembly, comprise coaxially arranged pipeline (1), connecting stud (2), nut (3), sleeve (4) and seal ring (5), it is characterized in that: described pipeline (1) outer surface has an annular boss (11), there is a bulge loop (12) boss (11) side, seal ring (5) side props up bulge loop (12), and opposite side props up connecting stud (2); Described nut (3) is enclosed within connecting stud (2) and sleeve (4) outward.
2. bobbin seal assembly according to claim 1, it is characterized in that: described sleeve (4) matches with described boss (11) partly to stretch out and forms neck boss (41), along the side-fit with this neck boss (41) in nut (3).
3. bobbin seal assembly according to claim 1, it is characterized in that: described seal ring (5) is circular cone, the upper end face of seal ring (5) props up described bulge loop (12), and seal ring (5) bottom surface props up described connecting stud (2).
4. bobbin seal assembly according to claim 3, is characterized in that: the range of taper of described seal ring (5) is 30 degree of-45 degree.
5. bobbin seal assembly according to claim 1, is characterized in that: the cross section of described boss (11) is rectangle.
6. bobbin seal assembly according to claim 1, is characterized in that: described bulge loop (12) is positioned on described boss (11) center side line.
7. bobbin seal assembly according to claim 1, is characterized in that: described bulge loop (12) cross section is triangle.
8. bobbin seal assembly according to claim 1, it is characterized in that: described pipeline (1), connecting stud (2), nut (3), sleeve (4) and seal ring (5) material are metal, and wherein seal ring (5) material is oxygen free copper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510148141.2A CN104832646B (en) | 2015-03-31 | 2015-03-31 | Sleeve sealing assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510148141.2A CN104832646B (en) | 2015-03-31 | 2015-03-31 | Sleeve sealing assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104832646A true CN104832646A (en) | 2015-08-12 |
| CN104832646B CN104832646B (en) | 2017-05-10 |
Family
ID=53810734
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510148141.2A Expired - Fee Related CN104832646B (en) | 2015-03-31 | 2015-03-31 | Sleeve sealing assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104832646B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3404902A (en) * | 1965-11-09 | 1968-10-08 | Gray Tool Co | Deflectable lip sealing connection having spoiler feature |
| CN2268169Y (en) * | 1996-12-06 | 1997-11-19 | 冶金工业部自动化研究院 | Rotating coupling unit |
| CN2365492Y (en) * | 1998-03-06 | 2000-02-23 | 王进泉 | Convenient loose joint |
| CN201209719Y (en) * | 2008-02-15 | 2009-03-18 | 杨长国 | Plastic-aluminum pipe connection |
| CN201739659U (en) * | 2010-07-22 | 2011-02-09 | 夏成法 | Connecting pipe fitting for thin-wall stainless steel pipe |
| CN102252140A (en) * | 2011-07-21 | 2011-11-23 | 浙江大学 | Seal joint of deep low-temperature nonmetal pipeline |
| CN102767572A (en) * | 2012-08-01 | 2012-11-07 | 优必胜（苏州）轴承有限公司 | Low-temperature-resisting sealing ring |
| CN103899862A (en) * | 2014-04-22 | 2014-07-02 | 江苏新方圆电气设备制造有限公司 | Wear-resisting type pipeline rotation compensator |
| CN204127557U (en) * | 2014-11-04 | 2015-01-28 | 陈墅庚 | Novel precise formula high pressure resistant rotary compensator |
-
2015
- 2015-03-31 CN CN201510148141.2A patent/CN104832646B/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3404902A (en) * | 1965-11-09 | 1968-10-08 | Gray Tool Co | Deflectable lip sealing connection having spoiler feature |
| CN2268169Y (en) * | 1996-12-06 | 1997-11-19 | 冶金工业部自动化研究院 | Rotating coupling unit |
| CN2365492Y (en) * | 1998-03-06 | 2000-02-23 | 王进泉 | Convenient loose joint |
| CN201209719Y (en) * | 2008-02-15 | 2009-03-18 | 杨长国 | Plastic-aluminum pipe connection |
| CN201739659U (en) * | 2010-07-22 | 2011-02-09 | 夏成法 | Connecting pipe fitting for thin-wall stainless steel pipe |
| CN102252140A (en) * | 2011-07-21 | 2011-11-23 | 浙江大学 | Seal joint of deep low-temperature nonmetal pipeline |
| CN102767572A (en) * | 2012-08-01 | 2012-11-07 | 优必胜（苏州）轴承有限公司 | Low-temperature-resisting sealing ring |
| CN103899862A (en) * | 2014-04-22 | 2014-07-02 | 江苏新方圆电气设备制造有限公司 | Wear-resisting type pipeline rotation compensator |
| CN204127557U (en) * | 2014-11-04 | 2015-01-28 | 陈墅庚 | Novel precise formula high pressure resistant rotary compensator |
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| Publication number | Publication date |
|---|---|
| CN104832646B (en) | 2017-05-10 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| 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: 20170510 Termination date: 20180331 |