CN104633364A - High-pressure-resistant sleeve compensator - Google Patents
High-pressure-resistant sleeve compensator Download PDFInfo
- Publication number
- CN104633364A CN104633364A CN201510108496.9A CN201510108496A CN104633364A CN 104633364 A CN104633364 A CN 104633364A CN 201510108496 A CN201510108496 A CN 201510108496A CN 104633364 A CN104633364 A CN 104633364A
- Authority
- CN
- China
- Prior art keywords
- pipe
- stuffing box
- box gland
- flange
- pressure
- 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
-
- 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
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L51/00—Expansion-compensation arrangements for pipe-lines
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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
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L27/00—Adjustable joints, Joints allowing movement
- F16L27/12—Adjustable joints, Joints allowing movement allowing substantial longitudinal adjustment or movement
- F16L27/125—Adjustable joints, Joints allowing movement allowing substantial longitudinal adjustment or movement having longitudinal and rotary movement
Abstract
The invention relates to a high-pressure-resistant sleeve compensator for compensating the thermal expansion and cold contraction of pressure pipelines. The high-pressure-resistant sleeve compensator comprises an external pipe (1) and an internal pipe (4), wherein the left end of the internal pipe extends into a pipe body (2) of the external pipe, and a sealing sleeve (6) sleeves the internal pipe. The high-pressure-resistant sleeve compensator is characterized in that the sealing sleeve is made of a silicone rubber material, and one end of the sealing sleeve is connected to the left end of the internal pipe in a sealing way through a tightening device (7); a gap is reserved between the outer wall of the sealing sleeve and the pipe body of the external pipe, and the other end of the sealing sleeve radially extends to form a ring body (8) which is fixedly connected with a flange (3) at the right end of the external pipe in a sealing way. The high-pressure-resistant sleeve compensator has the characteristics that one end of a pipe part of the sealing sleeve is fixed to the internal pipe in a sealing way, and the ring body at the other end of the sealing sleeve is fixed to the flange of the external pipe in a sealing way, so that a pressure fluid cannot leak out of the compensator; after the middle of the sealing sleeve is worn, the sealing performance of the sleeve compensator is still kept. Compared with the prior art, the high-pressure-resistant sleeve compensator has relatively high pressure resistance.
Description
Technical field
The present invention relates to a kind of for compensating the high pressure resistant sleeve expansion joint that hot-water line diatom expands, it is serially connected on hot water pipeline, its structure comprises the inner and outer tubes allowing fluid pass through, and when heat distribution pipeline generation line expands, inner and outer tubes realize the compensation of expanding to line by relative movement.
Background technique
The structure of existing sleeve expansion joint generally comprises inner and outer tubes, interior pipe is inserted in outer tube, stuffing box packing is provided with between interior pipe and outer tube, enrich between interior pipe and outer tube by making stuffing box packing to the precompressed of stuffing box packing, the end of inner and outer tubes is connected on heat distribution pipeline, when hot water pipeline generation line expands, inner and outer tubes realize the compensation of expanding to line by relative movement; Its deficiency is, under the operating mode that pipeline pressure is higher, pipe and the relative movement of outer tube can make the wearing and tearing of filler comparatively large, cause sealability to decline; When pipeline generation line expands in addition, its direction of displacement and the relative movement direction of sleeve expansion joint inner and outer tubes are difficult to ensure consistent, make stuffing box packing friction amesiality, the wearing and tearing of filler are aggravated, add maintenance times, also shorten the working life of sleeve expansion joint simultaneously.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of high pressure resistant sleeve expansion joint, in it, pipe can absorb the pressure be applied on seal element, strengthen the withstand voltage properties falling seal element, and after seal element weares and teares, still can keep the sealability of sleeve expansion joint.
Technological scheme of the present invention is, high pressure resistant sleeve expansion joint comprises outer tube 1, interior pipe 4, the left end of interior pipe is stretched in the pipe shaft 2 of outer tube, on interior pipe, cover has stuffing box gland 6, it is characterized in that, stuffing box gland is made up of silicone rubber material, one end fastening device 7 of stuffing box gland is sealedly and fixedly connected at the left end of interior pipe, gap is left between the outer wall of stuffing box gland and the pipe shaft of outer tube, the other end of stuffing box gland radially extends a ring body 8, on stuffing box gland, cover has a retaining ring 11, retaining ring is positioned at the left side of ring body, outer tube right-hand member is provided with flange 3, the mouth of pipe of flange is provided with a recess, described retaining ring is arranged in this recess, the internal diameter of recess matches with the external diameter of retaining ring, also cover has disk body 5 on inner pipe, disk body is on the right side of the ring body of stuffing box gland, multiple hex head bolt 9 is through ring body 8, disk body 5, one end of bolt 9 is tightened on flange.
Feature of the present invention is, one end sealing in Sealed casing pipe portion is fixing on inner pipe, and the ring body sealing of the stuffing box gland the other end is fixed on the flange of outer tube, can prevent pressure fluid from leaking from compensator well; On inner pipe, the supporting of interior pipe makes stuffing box gland can bear larger pressure to the pipe portion cover of stuffing box gland; When the generation relative movement of interior pipe and outer tube, it is stressed that the retaining ring on stuffing box gland can prevent the ring body on stuffing box gland from stretching, and the pipe portion uniform stressed of stuffing box gland is stretched; When the generation relative movement of interior pipe and outer tube, the part of wearing and tearing, at the middle part of stuffing box gland, after wearing and tearing in the middle part of stuffing box gland, still can keep the sealability of sleeve expansion joint; When managing the generation relative movement with outer tube in addition, the frictional force suffered by stuffing box gland inwall is radially even, there will not be monolateral by force phenomenon, avoids heel and toe wear; The pressure that stuffing box gland bears is formed by fluid pressure, and the frictional force between the scalable part of stuffing box gland and interior pipe, much smaller than the frictional force formed the precompressed of stuffing box packing, substantially reduces the wearing and tearing of stuffing box gland.Compared with prior art high pressure resistant sleeve expansion joint has stronger high-voltage resistance capability.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Mark in accompanying drawing represents respectively: pipe, 5-disk body, 6-stuffing box gland, 7-fastening device, 8-ring body, 9-hex head bolt, 10-annulus, 11-retaining ring in 1-outer tube, 2-pipe shaft, 3-flange, 4-.
Embodiment
Now contrast accompanying drawing and the specific embodiment of the present invention is described.
High pressure resistant sleeve expansion joint comprises outer tube 1, interior pipe 4, the left end of interior pipe is stretched in the pipe shaft 2 of outer tube, on interior pipe, cover has stuffing box gland 6, it is characterized in that, stuffing box gland is made up of silicone rubber material, one end fastening device 7 of stuffing box gland is sealedly and fixedly connected at the left end of interior pipe, gap is left between the outer wall of stuffing box gland and the pipe shaft of outer tube, the other end of stuffing box gland radially extends a ring body 8, on stuffing box gland, cover has a retaining ring 11, retaining ring is positioned at the left side of ring body, outer tube right-hand member is provided with flange 3, the mouth of pipe of flange is provided with a recess, described retaining ring is positioned at wherein, the internal diameter of recess matches with the external diameter of retaining ring, the degree of depth of recess is slightly larger than the thickness of retaining ring, also cover has disk body 5 on inner pipe, disk body is on the right side of the ring body of stuffing box gland, the external diameter of disk body is slightly larger than the external diameter of ring body, multiple hex head bolt 9 is left through ring body 8, disk body 5, one end of bolt 9 is tightened on flange.Screwing bolts makes the sealing of the ring body of stuffing box gland be fixed on the flange of outer tube right-hand member.Described fastening device can be steel wire clip or for strangle around steel wire.
For reducing pressure fluid washing away stuffing box gland outer wall, radially extend a flange at the left end of interior pipe, the external diameter of flange matches with the tube body diameter of outer tube.For ensureing the alignment of outer tube and interior pipe, prevent stuffing box gland uneven wear, the flange periphery of outer tube extends an annulus 10 to the right, and the internal diameter of annulus matches with the external diameter of disk body 5.
The length (length namely in the middle part of stuffing box gland) of the scalable part of stuffing box gland should be greater than the extreme length of compensated pipeline when line occurring and expanding, select the length of the scalable part of stuffing box gland be compensations pipeline 3 to 5 times of extreme length when there is line expansion; Stuffing box gland is made up of silicone rubber material, and silicone rubber has high temperature resistant and cold tolerance, and its Environmental Conditions temperature is-70 DEG C to 330 DEG C.When the line compensating pipeline expands, the wearing and tearing of stuffing box gland are very little, and the operating life of stuffing box gland depends on its ageing-resistant life-span, and ducted fluid makes stuffing box gland not easily aging from the impact of light, oxygen, and therefore its operating life can reach more than 10 years.
Claims (2)
1. a high pressure resistant sleeve expansion joint, comprise outer tube (1), interior pipe (4), the left end of interior pipe is stretched in the pipe shaft (2) of outer tube, on interior pipe, cover has stuffing box gland (6), it is characterized in that, stuffing box gland is made up of silicone rubber material, one end fastening device (7) of stuffing box gland is sealedly and fixedly connected at the left end of interior pipe, gap is left between the outer wall of stuffing box gland and the pipe shaft of outer tube, the other end of stuffing box gland radially extends a ring body (8), on stuffing box gland, cover has a retaining ring (11), retaining ring is positioned at the left side of ring body, outer tube right-hand member is provided with flange (3), the mouth of pipe of flange is provided with a recess, described retaining ring is arranged in this recess, the internal diameter of recess matches with the external diameter of retaining ring, also cover has disk body (5) on inner pipe, disk body is on the right side of the ring body of stuffing box gland, multiple hex head bolt (9) is through ring body (8), disk body (5), one end of bolt (9) is tightened on flange.
2. high pressure resistant sleeve expansion joint according to claim 1, is characterized in that, radially extend a flange at the left end of interior pipe, the external diameter of flange matches with the tube body diameter of outer tube; The flange periphery of outer tube extends an annulus (10) to the right, and the internal diameter of annulus matches with the external diameter of disk body (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510108496.9A CN104633364A (en) | 2015-03-13 | 2015-03-13 | High-pressure-resistant sleeve compensator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510108496.9A CN104633364A (en) | 2015-03-13 | 2015-03-13 | High-pressure-resistant sleeve compensator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104633364A true CN104633364A (en) | 2015-05-20 |
Family
ID=53212429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510108496.9A Pending CN104633364A (en) | 2015-03-13 | 2015-03-13 | High-pressure-resistant sleeve compensator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104633364A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112513506A (en) * | 2018-04-05 | 2021-03-16 | 巴西石油公司 | Expansion joint |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2049302U (en) * | 1989-04-07 | 1989-12-13 | 赵铎 | Casing telescopic device |
| JP2006153239A (en) * | 2004-12-01 | 2006-06-15 | Sankei Giken:Kk | Flexible expansion joint |
| US20090134620A1 (en) * | 2006-08-11 | 2009-05-28 | Zhanggen Song | Revolving Compensator of High Pressure for Pipe |
| CN101975322A (en) * | 2010-10-19 | 2011-02-16 | 无锡市金羊管道附件有限公司 | Dual-seal large-deflection compensating joint |
| CN202082548U (en) * | 2011-05-14 | 2011-12-21 | 青岛高远热能动力设备有限公司 | Elastic seal-type heat distribution pipeline compensator |
| CN204083592U (en) * | 2014-09-01 | 2015-01-07 | 福建省闽旋科技股份有限公司 | A kind of swivel joint of double-sealing |
-
2015
- 2015-03-13 CN CN201510108496.9A patent/CN104633364A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2049302U (en) * | 1989-04-07 | 1989-12-13 | 赵铎 | Casing telescopic device |
| JP2006153239A (en) * | 2004-12-01 | 2006-06-15 | Sankei Giken:Kk | Flexible expansion joint |
| US20090134620A1 (en) * | 2006-08-11 | 2009-05-28 | Zhanggen Song | Revolving Compensator of High Pressure for Pipe |
| CN101975322A (en) * | 2010-10-19 | 2011-02-16 | 无锡市金羊管道附件有限公司 | Dual-seal large-deflection compensating joint |
| CN202082548U (en) * | 2011-05-14 | 2011-12-21 | 青岛高远热能动力设备有限公司 | Elastic seal-type heat distribution pipeline compensator |
| CN204083592U (en) * | 2014-09-01 | 2015-01-07 | 福建省闽旋科技股份有限公司 | A kind of swivel joint of double-sealing |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112513506A (en) * | 2018-04-05 | 2021-03-16 | 巴西石油公司 | Expansion joint |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150520 |