CN101608723A - A kind of non-maintaining sleeve compensator with double sealing structure - Google Patents
A kind of non-maintaining sleeve compensator with double sealing structure Download PDFInfo
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- CN101608723A CN101608723A CNA2008101318228A CN200810131822A CN101608723A CN 101608723 A CN101608723 A CN 101608723A CN A2008101318228 A CNA2008101318228 A CN A2008101318228A CN 200810131822 A CN200810131822 A CN 200810131822A CN 101608723 A CN101608723 A CN 101608723A
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- packing
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- expansion joint
- sealing
- outer tube
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Abstract
The invention provides a kind of sleeve expansion joint with double sealing structure, it mainly is made up of outer tube (1), special-purpose lip-type packing (2), " O " RunddichtringO (3), floating seal ring pressure ring (4), polytetrafluoroethylene packing (5), Gland (6), hold-down bolt (7), composite core pipe (8).During work, manifold pressure rises, under the synergy of pressure medium and the middle pressure ring that floats, two lip limits of special-purpose lip-type packing respectively with outer tube on block and core tube-surface fit tightly, reach sealing effect; On the other hand, fit tightly with outer tube and core tube-surface under stuffing box packing is floated the impacting force effect of pressure ring and Gland in the centre and reach sealing effect, two kinds of sealing configuration synergy make sleeve expansion joint can reach desirable sealing effect for a long time.The present invention not only efficiently solves the defective of prior art, and this compensator also has advantages such as friction factor is low, Security good, price is low.
Description
Technical field
The invention belongs to the sleeve expansion joint technical field, specially refer to a kind of sleeve expansion joint that is used for the city heat supply pipeline fittings.
Background technique
Sleeve expansion joint is the most traditional pipeline compensator, and sleeve expansion joint generally adopts packing seal, and a side pipe is designed to be with stuffing box, another side Guan Weixin pipe, by gland with filler compacting in stuffing box.During work, the core pipe slides in stuffing box and realizes compensation.The first generation slip-type expansion joint that with the packing is sealing material is in use owing to the sealing layer abrasion is leaked, and existence must be stopped using the fatal shortcoming of changing filler, has increased very big workload for the maintenance of pipeline.Second generation sleeve expansion joint has increased on the basis of the first generation can pouring-in filler device, and sealing compound injects from the material feeding port depended on pressure, and can after-teeming under the pipe network operation state, and maintenance does not stop production.Use for many years shows that the sealability of second generation sleeve expansion joint has certain change, and maintenance workload has certain minimizing, needs the often problem of maintenance but still exist.Along with the fast development of concentrated supply of heating in the city, also more and more higher to the performance requirement of sleeve expansion joint, as: Security is good, the life-span is long, easy for installation, need not safeguard after the installation and operation etc.
Summary of the invention
In order to address the above problem, the invention provides a kind of sleeve expansion joint with double sealing structure, it is non-maintaining that sleeve expansion joint is in use really accomplished.
In order to realize the foregoing invention purpose, the present invention has adopted following technological scheme:
The double sealing structure sleeve expansion joint has two secondary sealing configurations: the one, and the packing box seal structure, filler adopts the teflon packing filler that does not have oil, and is pollution-free to medium, the composite pipe that the core tube material adopts corrosion resistant material and Ordinary Steel to be composited.The friction pair that the corrosion resistant material of core tube-surface and teflon seal filler are formed has very little friction factor, can reduce the rate of depreciation of packing_seal filler and core tube-surface, prolongs the working life of compensator.The 2nd, special-purpose lip rubber seal structure, sealing configuration is formed by the heatproof long-acting lip type silicone rubber O-ring of float pressure ring, particular design with through " O " type EPT rubber packing circle of cure process.Two secondary sealing configuration synergy in the working procedure make sleeve expansion joint can reach desirable sealing effect for a long time.
Owing to adopted technological scheme as mentioned above, the present invention has following good effect:
1) be not more than 2.5MPa in working pressure, medium temperature is not more than under 280 ℃ the situation, and this sleeve expansion joint has merged two kinds of sealing configurations, and when carrying out the pipeline thermal compensation, sealing is reliable, and it is non-maintaining that sleeve expansion joint is really accomplished.
2) the core pipe adopts the composite pipe manufacturing that corrosion resistant material and Ordinary Steel are composited, the friction pair that the corrosion resistant material of core tube-surface and no oily teflon seal filler are formed, pollution-free to medium, have less friction factor, can effectively reduce the displacement counter-force of compensator.
Description of drawings
Fig. 1 is the non-maintaining sleeve compensator structural representation with double sealing structure;
Among Fig. 1: the 1-outer tube; The special-purpose lip-type packing of 2-; 3-" O " RunddichtringO; 4-floating seal ring pressure ring; The 5-polytetrafluoroethylene packing; The 6-Gland; The 7-hold-down bolt; 8-composite core pipe.
Embodiment
As shown in Figure 1: the non-maintaining sleeve compensator with double sealing structure of the present invention mainly is made up of outer tube (1), special-purpose lip-type packing (2), " O " RunddichtringO (3), floating seal ring pressure ring (4), polytetrafluoroethylene packing (5), Gland (6), hold-down bolt (7), composite core pipe (8).
During work, " O " type rubber seal through cure process in the lip rubber seal structure encloses styling, be used for guaranteeing the minimum opening amount of special-purpose lip-type packing, when manifold pressure rises, under the synergy of pressure medium and the middle pressure ring that floats, two lip limits of special-purpose lip-type packing respectively with outer tube on block and core tube-surface fit tightly, reach sealing effect; On the other hand, fit tightly with outer tube and core tube-surface under stuffing box packing is floated the impacting force effect of pressure ring and Gland in the centre and reach sealing effect, two kinds of sealing configuration synergy make sleeve expansion joint reach desirable sealing effect.Because lip type silicone rubber O-ring and two kinds of rubber of " O " type EPT rubber packing circle of lip seal coil structures all have good physical and chemical stability energy, less rate of depreciation between while polytetrafluoroethylene packing and the composite core pipe surface of contact, it is non-maintaining for a long time that sleeve expansion joint can be accomplished in the course of the work.
This non-maintaining sleeve compensator with double sealing structure can also be used on other pipe and equipment that similar operating conditions requirement is arranged.
Claims (3)
1, a kind of sleeve expansion joint with double sealing structure, it is characterized in that: have two cover sealing configurations, mainly form by outer tube (1), special-purpose lip-type packing (2), " O " RunddichtringO (3), floating seal ring pressure ring (4), polytetrafluoroethylene packing (5), Gland (6), hold-down bolt (7), composite core pipe (8).During work, manifold pressure rises, under the synergy of pressure medium and the middle pressure ring that floats, two lip limits of special-purpose lip-type packing respectively with outer tube on block and core tube-surface fit tightly, reach sealing effect, on the other hand, fit tightly with outer tube and core tube-surface under stuffing box packing is floated the impacting force effect of pressure ring and Gland in the centre and reach sealing effect, two kinds of sealing configuration synergy make sleeve expansion joint can reach desirable sealing effect for a long time.
2, the sleeve expansion joint with double sealing structure as claimed in claim 1, the seal style that it is characterized in that special-purpose lip rubber seal coil structures, its structure is formed by the heatproof long-acting lip type silicone rubber O-ring of float pressure ring, particular design with through " O " type EPT rubber packing circle of cure process.
3, the sleeve expansion joint with double sealing structure as claimed in claim 1, it is characterized in that: sealing configuration filler material is for to the free of contamination teflon of medium or other macromolecular material, and core tubing matter is the composite pipe that corrosion resistant material and Ordinary Steel or other metallic material are composited.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810131822 CN101608723B (en) | 2008-06-21 | 2008-06-21 | Non-maintaining sleeve compensator with double sealing structures |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810131822 CN101608723B (en) | 2008-06-21 | 2008-06-21 | Non-maintaining sleeve compensator with double sealing structures |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101608723A true CN101608723A (en) | 2009-12-23 |
| CN101608723B CN101608723B (en) | 2012-08-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200810131822 Active CN101608723B (en) | 2008-06-21 | 2008-06-21 | Non-maintaining sleeve compensator with double sealing structures |
Country Status (1)
| Country | Link |
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| CN (1) | CN101608723B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102003588A (en) * | 2010-11-10 | 2011-04-06 | 洛阳双瑞特种装备有限公司 | Direct-buried type maintenance-free sleeve compensator |
| CN102052464A (en) * | 2010-11-10 | 2011-05-11 | 洛阳双瑞特种装备有限公司 | Composite structural rubber seal ring with self-tightening function |
| CN102878381A (en) * | 2012-10-08 | 2013-01-16 | 江苏恒丰波纹管有限公司 | Maintenance-free external-pressing direct buried expansion joint |
| CN103672242A (en) * | 2013-11-21 | 2014-03-26 | 南通星球石墨设备有限公司 | Double-layer flange sealing structure used for four-in-one graphite synthesis furnace |
| CN110608327A (en) * | 2018-09-21 | 2019-12-24 | 中航光电科技股份有限公司 | Female joint and fluid joint assembly |
| CN112879672A (en) * | 2021-01-21 | 2021-06-01 | 唐山三友远达纤维有限公司 | Novel flexible waterproof sleeve made of nonmetal material |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3680874A (en) * | 1970-08-24 | 1972-08-01 | Federal Mogul Corp | Flexible pneumatic duct connectors assembled with internal seals |
| CN1007654B (en) * | 1988-06-30 | 1990-04-18 | 张立夫 | Duct compensator |
| CN2243016Y (en) * | 1996-01-05 | 1996-12-18 | 岳兆智 | Flat-tube type seal ring pipeline expansion joint |
| CN2238368Y (en) * | 1996-01-11 | 1996-10-23 | 李文洲 | Bidirectional sealed casing type pipeline telescoping compensator |
| IL121796A (en) * | 1997-09-18 | 2001-06-14 | Krausz Metal Ind Ltd | Seal for coupling and connecting means |
| CN2482617Y (en) * | 2001-06-05 | 2002-03-20 | 山东双兴集团有限公司 | Pipe compensator |
| CN2929420Y (en) * | 2006-04-24 | 2007-08-01 | 江苏百新波纹管有限公司 | Rotary no-thrust pipeline telescopic device |
| CN100343572C (en) * | 2006-08-11 | 2007-10-17 | 宋章根 | Pipe used high pressure resistant rotary compensator |
-
2008
- 2008-06-21 CN CN 200810131822 patent/CN101608723B/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102003588A (en) * | 2010-11-10 | 2011-04-06 | 洛阳双瑞特种装备有限公司 | Direct-buried type maintenance-free sleeve compensator |
| CN102052464A (en) * | 2010-11-10 | 2011-05-11 | 洛阳双瑞特种装备有限公司 | Composite structural rubber seal ring with self-tightening function |
| CN102878381A (en) * | 2012-10-08 | 2013-01-16 | 江苏恒丰波纹管有限公司 | Maintenance-free external-pressing direct buried expansion joint |
| CN103672242A (en) * | 2013-11-21 | 2014-03-26 | 南通星球石墨设备有限公司 | Double-layer flange sealing structure used for four-in-one graphite synthesis furnace |
| CN103672242B (en) * | 2013-11-21 | 2016-08-17 | 南通星球石墨设备有限公司 | Four-in-one graphitic synthetic furnace Double-layer flange seals structure |
| CN110608327A (en) * | 2018-09-21 | 2019-12-24 | 中航光电科技股份有限公司 | Female joint and fluid joint assembly |
| CN112879672A (en) * | 2021-01-21 | 2021-06-01 | 唐山三友远达纤维有限公司 | Novel flexible waterproof sleeve made of nonmetal material |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101608723B (en) | 2012-08-29 |
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Address after: 471000, Binhe Road, hi tech Development Zone, Henan, Luoyang, 32 Patentee after: CSSC Shuangrui (Luoyang) special equipment Co.,Ltd. Address before: 471000, Binhe Road, hi tech Development Zone, Henan, Luoyang, 32 Patentee before: LUOYANG SUNRUI SPECIAL EQUIPMENT Co.,Ltd. |