CN2872045Y - Self-sealing type direct-buried sleeve compensator - Google Patents
Self-sealing type direct-buried sleeve compensator Download PDFInfo
- Publication number
- CN2872045Y CN2872045Y CN 200620089123 CN200620089123U CN2872045Y CN 2872045 Y CN2872045 Y CN 2872045Y CN 200620089123 CN200620089123 CN 200620089123 CN 200620089123 U CN200620089123 U CN 200620089123U CN 2872045 Y CN2872045 Y CN 2872045Y
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- CN
- China
- Prior art keywords
- sleeve
- ring
- inner sleeve
- sealing
- supported
- 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
- 238000007789 sealing Methods 0.000 title claims abstract description 37
- 238000000576 coating method Methods 0.000 claims description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 3
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- 239000011651 chromium Substances 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 239000003973 paint Substances 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims 1
- 238000003780 insertion Methods 0.000 claims 1
- 238000012423 maintenance Methods 0.000 abstract description 3
- 230000001681 protective effect Effects 0.000 abstract 3
- 230000003993 interaction Effects 0.000 abstract 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 12
- 229910002804 graphite Inorganic materials 0.000 description 10
- 239000010439 graphite Substances 0.000 description 10
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 6
- 229910052982 molybdenum disulfide Inorganic materials 0.000 description 4
- -1 polyoxymethylene Polymers 0.000 description 4
- 239000002131 composite material Substances 0.000 description 3
- 239000003365 glass fiber Substances 0.000 description 3
- 229910000906 Bronze Inorganic materials 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 2
- 230000003712 anti-aging effect Effects 0.000 description 2
- 239000010974 bronze Substances 0.000 description 2
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229930040373 Paraformaldehyde Natural products 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920006324 polyoxymethylene Polymers 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000011253 protective coating Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Joints Allowing Movement (AREA)
Abstract
The self-sealing directly buried sleeve compensator includes one inner sleeve and one outer sleeve, the inner sleeve has its front part inserted into the outer sleeve and supported by the fixed ring and the moving ring fixed between the outer wall of the inner sleeve and the inner wall of the outer sleeve, and guide sleeves are installed between the inner sleeve and the fixed ring and between the inner wall of the moving ring and the inner sleeve. The rear part of the inner sleeve is sleeved with a protective sleeve, the rear end of the protective sleeve is supported by a sealing seat clamped with an auxiliary sealing ring, and the front end of the protective sleeve is supported by a fixed ring. A sealing cavity formed by the interaction of a plurality of layers of sealing rings and flexible sealing rings is arranged between the fixed ring and the movable ring. An anti-drop ring is fixedly arranged at the front port of the inner sleeve. The front end of the outer sleeve is fixedly provided with a tail sleeve. Compared with the existing compensator, the utility model has the advantages of simple structure, large compensation capability and no elastic force of the pipeline during operation; and the sealing is reliable, the service life is long, the one-time filling service life can reach more than 20 years, and the maintenance is not needed.
Description
(1) technical field:
The utility model relates to a kind of sleeve expansion joint, particularly relates to a kind of direct-burried sleeve expansion joint that relies on medium self pressure to realize sealing, and it is widely used in the direct buried pipe network in city.
(2) background technique:
Municipal heating systems adopts in the past trench mode channelling always, because this kind mode long construction period, high material consumption, floor space is big and investment cost is high shortcoming, has had a strong impact on the development speed of municipal heating systems.In order to address the above problem, the directly buried installation technology of heat supply network has obtained significant progress.From the applicable cases of present directly buried technology, press the compensation way branch, uncompensated direct-burried is arranged and two kinds of compensation direct-burrieds are arranged.The steam pipe network must adopt compensation directly buried installation mode when the hot water temperature surpasses 120 ℃.Existing direct-burried pipe network is most widely used to be bellows and sleeve expansion joint.Though corrugated expansion joint does not have leakage problem, because its compensation ability is little, flexible power; Simultaneously, be subjected to the influence of factors such as stress-number of cycles and intergranular corrosion, its life-span is short, and reliability is low, needs often to change, and the maintenance cost height has limited promoting the use of of it.Though it is big that the ordinary cartridge compensator has compensation ability, the advantage of nonelastic power because the ordinary cartridge compensator adopts packing_seal, not only the life-span low, and easily leak.
(3) summary of the invention:
The purpose of this utility model provides a kind of self sealing direct-burried sleeve expansion joint high temperature resistant, anti-aging and that rebound elasticity is good that has.
Self sealing direct-burried sleeve expansion joint comprises inner sleeve and outer sleeve, and inner sleeve is anterior to be inserted in the outer sleeve, by be installed between inner sleeve outer wall and the outer sleeve inwall decide ring and rotating ring is supported.Be provided with protecting jacket at the inner sleeve rear portion, the protecting jacket rear end is supported by the sealing seat that is equiped with the auxiliary seal pad, and front end is supported by fixed ring, is equiped with guide sleeve respectively between fixed ring and rotating ring inwall and inner sleeve.It between fixed ring and the rotating ring Seal cage of forming alternately by multi-layer sealed ring and flexible sealing ring.The place is installed with anti-decylization at the inner sleeve front port.Front end at outer sleeve is installed with the tail cover.
Above-mentioned Seal cage both sides are encircled surely with rotating ring and are made cone angle, can improve the adaptation between seal ring and flexible sealing ring and inner sleeve working surface.
Above-mentioned guide sleeve inwall sintering has polyoxymethylene or polytetrafluorethylecoatings coatings.
Above-mentioned tail cover is one-time formed overall structure with outer sleeve.
Above-mentioned seal ring is a polytetrafluoroethylene ring of dosing graphite, glass fibre, bronze or molybdenum disulfide.Also can be ring or metallic graphite carbon seal ring by the Expanded graphite compacting.
The above-mentioned flexible sealing ring flexible sealing ring that the strip Expanded graphite, high-temperature lubricant, the molybdenum disulphide powder that are processed into required size made of serving as reasons.
Above-mentioned auxiliary seal ring is a packing.
Above-mentioned protecting jacket is the stainless steel protection cover.
Above-mentioned inner sleeve working surface has chromium coating, and outer sleeve surface has protective coating.
The utility model adopts the composite seal chamber of sealability excellence, utilizes the interior pressure that adds in advance in the Seal cage and can realize sealing at " self sealing action " that the rotating ring that moves between inner and outer sleeves forms under the effect of medium self pressure, and sealability is reliable.The polytetrafluoroethylene ring self-lubricating property of dosing graphite, glass fibre, bronze powder or molybdenum disulfide is good, friction factor is low, the seal ring of Expanded graphite compacting and the flexible sealing ring prepared with Expanded graphite powder, high temperature grease and molybdenum disulfide also have advantage high temperature resistant, anti-aging and that rebound elasticity is good except that having above-mentioned premium properties.The composite seal chamber that the seal ring of employing Expanded graphite compacting and flexible sealing ring are formed can be made pressure and be reached 4.0MPa, and temperature reaches 400 ℃ High Temperature High Pressure compensator.
The utility model is work like this: when the pipeline internal medium temperature variation, pipeline produces flexible, and the inner sleeve, the outer sleeve that at this moment are installed in compensator in the pipeline produce slide relative, the extending amount of compensation pipeline.The composite seal chamber of forming by seal ring and flexible sealing ring under the effect of the impacting force that interior pressure and pressure medium form by rotating ring and fixed ring and the intimate of inner sleeve fit, stop the interior medium of pipe to external leakage, thereby reach reliable sealing.
The utility model is compared with existing compensator, and not only simple in structure, compensation ability is big, the nonelastic power of pipeline during operation; And sealing is reliable, the life-span is long, and the one-time pad life-span can reach more than 20 years, and Maintenance free.
The utility model can be made into unidirectional, also can be made into two-wayly, and when making when two-way, its compensation rate is unidirectional twice.
(4) description of drawings:
Fig. 1 is a kind of example structure schematic representation of the utility model.
(5) specific embodiment:
Self sealing direct-burried sleeve expansion joint comprises inner sleeve 1 and outer sleeve 2, at inner sleeve 1 working surface chromium coating is arranged, and at outer sleeve 2 outer surfaces the coat of paint is arranged.Inner sleeve 1 is anterior to be inserted in the outer sleeve 2, by be installed between inner sleeve 1 outer wall and outer sleeve 2 inwalls decide ring 3 and rotating ring 4 is supported, encircle surely 3 and rotating ring 4 inwalls and inner sleeve 1 between be equiped with guide sleeve 12 respectively.Be provided with protecting jacket 5 in inner sleeve 1 rear sleeve, protecting jacket 5 is the stainless steel protection cover.Protecting jacket 5 rear ends are supported by the sealing seat 7 that is equiped with auxiliary seal ring 6, and its front end is supported by encircling 3 surely.Auxiliary seal ring 6 is a packing.Surely encircle 3 and rotating ring 4 between Seal cages for forming alternately by multi-layer sealed ring 8 and flexible sealing ring 9.Seal ring 8 is to dose the polytetrafluoroethylene ring of graphite, glass fibre, bronze or molybdenum disulfide or the ring of Expanded graphite compacting.Flexible sealing ring 9 flexible sealing ring that the strip Expanded graphite, high-temperature lubricant, the molybdenum disulphide powder that are processed into required size made of serving as reasons.The Seal cage both sides encircle surely 3 and the inboard of rotating ring 4 make cone angle, can improve the adaptation between multi-layer sealed ring 8 and flexible sealing ring 9 and inner sleeve 1 working surface.Be installed with anti-decylization 10 at inner sleeve 1 front port place.Front end at outer sleeve 2 is installed with tail cover 11.
Claims (5)
1; self sealing direct-burried sleeve expansion joint; comprise inner sleeve (1) and outer sleeve (2); it is characterized in that in inner sleeve (1) the anterior insertion outer sleeve (2); by be installed between inner sleeve (1) outer wall and outer sleeve (2) inwall decide ring (3) and rotating ring (4) is supported; between fixed ring (3) and rotating ring (4) inwall and inner sleeve (1), be equiped with guide sleeve (12) respectively; be provided with protecting jacket (5) in inner sleeve (1) rear sleeve; protecting jacket (5) rear end is supported by the sealing seat that is equiped with auxiliary seal ring (6) (7); front end is supported by fixed ring (3); it between fixed ring (3) and the rotating ring (4) Seal cage of forming alternately by multi-layer sealed ring (8) and flexible sealing ring (9); the front port place is installed with anti-decylization (10) at inner sleeve (1), is installed with tail cover (11) at the front end of outer sleeve (2).
2, self sealing direct-burried sleeve expansion joint according to claim 1 is characterized in that described Seal cage both sides encircle the madial wall of (3) and rotating ring (4) surely cone angle is arranged respectively.
3, self sealing direct-burried sleeve expansion joint according to claim 1 is characterized in that described tail cover (11) and outer sleeve (2) are one-time formed overall structure.
4, self sealing direct-burried sleeve expansion joint according to claim 1 is characterized in that described protecting jacket (5) is the stainless steel protection cover.
5, self sealing direct-burried sleeve expansion joint according to claim 1 is characterized in that described inner sleeve (1) working surface has chromium coating, and outer sleeve (2) outer surface has the coat of paint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620089123 CN2872045Y (en) | 2006-01-25 | 2006-01-25 | Self-sealing type direct-buried sleeve compensator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620089123 CN2872045Y (en) | 2006-01-25 | 2006-01-25 | Self-sealing type direct-buried sleeve compensator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2872045Y true CN2872045Y (en) | 2007-02-21 |
Family
ID=37740392
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620089123 Expired - Fee Related CN2872045Y (en) | 2006-01-25 | 2006-01-25 | Self-sealing type direct-buried sleeve compensator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2872045Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102121551A (en) * | 2010-01-07 | 2011-07-13 | 贵阳铝镁设计研究院 | Detachable deformation compensator |
| CN106678476A (en) * | 2017-02-20 | 2017-05-17 | 江苏丰禾机械制造股份有限公司 | Sleeve-type dynamic seal compensator |
| CN107939737A (en) * | 2017-12-25 | 2018-04-20 | 杭州福斯达深冷装备股份有限公司 | A kind of guide frame of guiding trestle and the vertical high pressure centrifugal pump pump housing |
-
2006
- 2006-01-25 CN CN 200620089123 patent/CN2872045Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102121551A (en) * | 2010-01-07 | 2011-07-13 | 贵阳铝镁设计研究院 | Detachable deformation compensator |
| CN106678476A (en) * | 2017-02-20 | 2017-05-17 | 江苏丰禾机械制造股份有限公司 | Sleeve-type dynamic seal compensator |
| CN107939737A (en) * | 2017-12-25 | 2018-04-20 | 杭州福斯达深冷装备股份有限公司 | A kind of guide frame of guiding trestle and the vertical high pressure centrifugal pump pump housing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: DALIAN BENEFIT MORE CHANNELS LTD. Free format text: FORMER OWNER: SHENYANG CHANGHAI HEAT EQUIPMENT CO., LTD. Effective date: 20071221 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20071221 Address after: Dalian Wan Zhen Mao Ying Zi Cun, Ganjingzi District, Dalian City, Liaoning province zip code: 116113 Patentee after: Dalian Yiduo Piping Co., Ltd. Address before: Dongshan village, Qianjin Township, Dongling District, Liaoning, Shenyang, China: 110044 Patentee before: Changhai Heating Power Equipment Co., Ltd., Shenyang |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070221 Termination date: 20100225 |