CN104033685A - Novel sleeve type expansion joint - Google Patents
Novel sleeve type expansion joint Download PDFInfo
- Publication number
- CN104033685A CN104033685A CN201410225966.5A CN201410225966A CN104033685A CN 104033685 A CN104033685 A CN 104033685A CN 201410225966 A CN201410225966 A CN 201410225966A CN 104033685 A CN104033685 A CN 104033685A
- Authority
- CN
- China
- Prior art keywords
- outer sleeve
- sleeve
- rubber sealing
- inner sleeve
- flange
- 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.)
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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
- 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
A novel sleeve type expansion joint comprises an outer sleeve, an inner sleeve, flanges, check rings, O-shaped rubber sealing rings, framework rubber sealing rings and rubber sealing gaskets. The outer sleeve and the inner sleeve are arranged in a sleeved mode, at least three O-shaped rubber sealing rings are arranged between the outer sleeve and the inner sleeve, and the outer sleeve and the inner sleeve can axially and relatively slide. The framework rubber sealing rings are fixed to inner circles of the flanges, the flanges and the framework rubber sealing rings are arranged on the inner sleeve in a sleeved mode, each check ring is arranged on one side face of the corresponding flange, each rubber sealing gasket is arranged on the other side face of the corresponding flange, the flanges are fixedly connected with flanges on the outer sleeve through bolts, and the flanges are used for limiting the relative slippage of the sleeves. The rubber sealing gaskets are used for preventing dust from entering the surface of a sliding seal, and the check rings are fixing parts for preventing the framework rubber sealing rings from falling from the flanges. The novel sleeve type expansion joint is high in accuracy, large in compensation quantity, free of leakage, wide in application range and free of maintenance within a service life period.
Description
Technical field
The present invention relates to the deformation-compensated safety installations of pipeline thermal, particularly relate to a kind of novel slip-type expansion joint.
Background technique
Slip-type expansion joint also claims tubular type slip joint, is the safety allowance device of hot fluid pipeline conventional construction, is mainly used in additionally arranging of rectilinear duct.Be applicable to hot water, steam, oily lipid medium, sliding motion by sliding sleeve to outer sleeve, there is very strong axial stretching compensation ability and certain rotation compensation ability, reach the compensation of thermal expansion, in the time of can eliminating city heat supply and industrial pipe network operation completely, because medium temperature changes, produce the distortion of expanding with heat and contract with cold.The combined sealing structure of slip-type expansion joint in the past, the material of its seal ring is polyurethane, the shortcoming of this seal combination is that heat resistance is poor, generally can only be in long-term work below 80 ℃, can not be over 70 ℃ when medium is water, gas.And poor to acid-base solution repellence, so application area is extremely restricted.Slidingsurface corrosion in addition, strengthens frictional influence compensator working life.Sealing configuration exposes, and does nose balance when motion easily to form condition of negative pressure and suck dust and earth, once dirt enters sealing configuration and just strengthens its wear extent, directly reduces the working life sealing.Slip-type expansion joint is often positioned at underground, is not easy to observe runnability, and maintenance difficult forms potential safety hazard.
Summary of the invention
The technical problem to be solved in the present invention is, a kind of rational in infrastructure, safe and reliable, long service life is provided, non-leakage, installation and maintenance convenient, applied widely, meanwhile, be convenient to circuit design, be convenient to installation, can reduce the novel slip-type expansion joint that fixed support arranges.
The technological scheme adopting is:
A novel slip-type expansion joint, comprises outer sleeve, inner sleeve, flange, back-up ring, O shape rubber seal, skeleton rubber seal ring and rubber gasket.Described outer sleeve and inner sleeve suit, the minimum three road O shape rubber seal that are equipped with between outer sleeve and inner sleeve, when temperature compensation, outer sleeve and inner sleeve can carry out axial relative sliding.The inner circle of described flange is fixed with skeleton rubber seal ring, flange is together with skeleton rubber seal ring and inner sleeve suit, the side that flange is equipped with skeleton rubber seal ring is provided with back-up ring, flange another side is provided with rubber gasket, described flange is fixedly connected with outer sleeve upper flange by bolt, and described flange is that outer sleeve and inner sleeve relative sliding maximum flow are carried out to mechanical position limitation; Rubber gasket is to prevent that dust from entering slipper seal surface between flange and outer sleeve
;back-up ring is the fixed block that prevents that skeleton rubber seal ring from coming off from flange.
Above-mentioned outer sleeve adopts H8/f7 glade plane space to coordinate with inner sleeve relative sliding surface, slidingsurface chromium plating polishing.
This product structure feature:
The one, adopt general O shape rubber seal multi-sealed, material can be according to fed sheet of a media, pressure, temperature apolegamy.The features such as it is large that it has compressive strength, and friction factor little (0.01 ~ 0.02) is heat-resisting acidproof not aging, and good sealing effect, reduces costs, easy to maintenance.Be applicable to medium engineering pressure≤20.0MPa, medium temperature-35 ℃ ~+200 ℃.
The 2nd, slidingsurface adopts chrome-faced polishing treatment, and corrosion resistance and good under the environment such as salt solution, salt solution, has stopped slidingsurface corrosion, effectively reduces friction factor, has improved the working life of O shape rubber seal.
The 3rd, outer slip surface adopts skeleton rubber sealing, no matter is direct-burried or peripheral hardware, can effectively avoid external dust foreign material to enter slipper seal surface, destroys O shape rubber seal, affects sealing effect.
The 4th, adopt two-way type collocation structure, no matter being medium, two-way type feature from what end of compensator flows into, always the sliding sleeve at its compensator two ends is free to slide, reach bidirectional compensating effect, increase compensation rate.
Comprehensive Characteristics is that form and position tolerance and quality of fit are higher, and compensation rate is large, without revealing, applied range, can be widely used in the pipe networks such as chemical industry, oil, thermoelectricity, metallurgy, concentrated supply of heating in the city heating, trench and the high pipeline setting up, can reach non-maintaining within useful life period substantially.Avoided the frequent breakage that old-fashioned compensator causes due to leakage in the past.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the side view of Fig. 1.
Embodiment
A novel slip-type expansion joint, comprises outer sleeve 1, inner sleeve 7, flange 4, back-up ring 5, O shape rubber seal 2, skeleton rubber seal ring 6 and rubber gasket 3.Described outer sleeve 1 and inner sleeve 7 suits, three road O shape rubber seal 2 are housed between outer sleeve 1 and inner sleeve 7, when temperature compensation, outer sleeve and inner sleeve can carry out axial relative sliding, described outer sleeve adopts H8/f7 glade plane space to coordinate with inner sleeve relative sliding surface, slidingsurface chromium plating polishing.The inner circle of described flange 4 is fixed with skeleton rubber seal ring 6, flange is together with skeleton rubber seal ring and inner sleeve 7 suits, the side that flange 4 is equipped with skeleton rubber seal ring 6 is provided with back-up ring 5, flange 4 another sides are provided with rubber gasket 3, described flange 4 is fixedly connected with outer sleeve 1 upper flange by bolt, and described flange 4 is that outer sleeve 1 and inner sleeve 7 relative sliding maximum flows are carried out to mechanical position limitation; Rubber gasket 3 is to prevent that dust from entering slipper seal surface between flange and outer sleeve
;back-up ring 5 is the fixed blocks that prevent that skeleton rubber seal ring from coming off from flange.
Slip-type expansion joint sealing configuration is in the past from pressure-bearing direction and first adopts twice Yx shape seal ring to add O shape rubber seal one again.Because the material of Yx shape seal ring is polyurethane, the shortcoming of this seal combination is that heat resistance is poor, generally can only be 80
℃following long-term work, can not be over 70 ℃ when medium is water, gas.And poor to acid-base solution repellence, so application area is extremely restricted.Consider under the working state that slip-type expansion joint passes through at medium, temperature variation is progressive continuously, temperature compensation is also progressive continuously, outer sleeve and inner sleeve relative sliding velocity be (≤0.003 meter per second) relatively slowly, and the sealing configuration of this product adopts three road O shape rubber seal rings for seals.That O shape rubber seal has is simple in structure, good seal performance, little, the easy manufacture of frictional force, easily install, low cost and other advantages.Theoretically, under slip-type expansion joint working state, one O shape rubber seal rings for seal is just enough to guarantee not reveal, and increases two seals and is in order to improve sealing reliability and compensator working life.And O shape rubber seal has various material, can reach optimal seal effect according to fed sheet of a media, pressure, temperature apolegamy, make this product can be widely used in various fluid-transporting tubings.
Outer sleeve adopts H8/f7 glade plane space to coordinate with the relative sliding surface of inner sleeve, chrome-faced polishing, and surface roughness reaches Rz0.2.Guaranteed O shape rubber seal rings for seal installation requirement, stopped slidingsurface corrosion, effectively reduced friction factor, thereby improved the working life of O shape rubber seal.Theoretically, the relative sliding of outer sleeve and inner sleeve distance is that temperature compensation amount is hard-core, considers practical engineering application situation and cost, is set as 275 millimeters and can meets most usage requirements.
Movement clearance between inner sleeve and flange adopts skeleton rubber sealing, between outer sleeve and flange, adopts rubber gasket.Can effectively avoid like this external dust foreign material to enter slipper seal surface, destroy O shape rubber seal, affect sealing effect.Greatly improved the working life of this product.
Claims (2)
1. a novel slip-type expansion joint, comprise outer sleeve (1), inner sleeve (7), flange (4), back-up ring (5), O shape rubber seal (2), skeleton rubber seal ring (6) and rubber gasket (3), it is characterized in that described outer sleeve (1) and inner sleeve (7) suit, the minimum three road O shape rubber seal (2) that are equipped with between outer sleeve (1) and inner sleeve (7), when temperature compensation, outer sleeve and inner sleeve can carry out axial relative sliding, the inner circle of described flange (4) is fixed with skeleton rubber seal ring (6), flange is together with skeleton rubber seal ring and inner sleeve (7) suit, the side that flange (4) is equipped with skeleton rubber seal ring is provided with back-up ring (5), flange (4) another side is provided with rubber gasket (3), described flange (4) is fixedly connected with outer sleeve (1) upper flange by bolt.
2. a kind of novel slip-type expansion joint according to claim 1, is characterized in that described outer sleeve (1) adopts H8/f7 glade plane space to coordinate with inner sleeve (7) relative sliding surface, slidingsurface chromium plating polishing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410225966.5A CN104033685A (en) | 2014-05-27 | 2014-05-27 | Novel sleeve type expansion joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410225966.5A CN104033685A (en) | 2014-05-27 | 2014-05-27 | Novel sleeve type expansion joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104033685A true CN104033685A (en) | 2014-09-10 |
Family
ID=51464579
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410225966.5A Pending CN104033685A (en) | 2014-05-27 | 2014-05-27 | Novel sleeve type expansion joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104033685A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104236804A (en) * | 2014-09-22 | 2014-12-24 | 西安航空动力股份有限公司 | Pressure test tool with function of axial deformation compensation |
| CN104976461A (en) * | 2015-06-30 | 2015-10-14 | 胡立功 | Rotary expansion joint component for water pipes |
| CN105024158A (en) * | 2015-06-23 | 2015-11-04 | 中国航空工业集团公司西安飞机设计研究所 | Early warning radar and aircraft provided with same |
| CN106151729A (en) * | 2016-08-25 | 2016-11-23 | 南通艾迈特机械有限公司 | A kind of pipeline compensator |
| CN107370337A (en) * | 2017-08-16 | 2017-11-21 | 江苏磁谷科技股份有限公司 | A kind of vertical mounting structure of permanent magnet clutch, vertical installation method and ON-LINE SEPARATION and repositioning method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2474871Y (en) * | 2001-05-09 | 2002-01-30 | 李建军 | Direct buried slip joint |
| WO2010133738A1 (en) * | 2009-05-20 | 2010-11-25 | Parbrand, S.L. | Dilation compensation device for pipes |
| CN201954177U (en) * | 2011-02-28 | 2011-08-31 | 北京工业大学 | Self sealing compensation device of fluid conveying pipeline |
| CN103672277A (en) * | 2012-09-06 | 2014-03-26 | 李建军 | High-temperature metal seal sleeve compensator |
| CN203857179U (en) * | 2014-05-27 | 2014-10-01 | 刘志民 | Novel sleeve type compensator |
-
2014
- 2014-05-27 CN CN201410225966.5A patent/CN104033685A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2474871Y (en) * | 2001-05-09 | 2002-01-30 | 李建军 | Direct buried slip joint |
| WO2010133738A1 (en) * | 2009-05-20 | 2010-11-25 | Parbrand, S.L. | Dilation compensation device for pipes |
| CN201954177U (en) * | 2011-02-28 | 2011-08-31 | 北京工业大学 | Self sealing compensation device of fluid conveying pipeline |
| CN103672277A (en) * | 2012-09-06 | 2014-03-26 | 李建军 | High-temperature metal seal sleeve compensator |
| CN203857179U (en) * | 2014-05-27 | 2014-10-01 | 刘志民 | Novel sleeve type compensator |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104236804A (en) * | 2014-09-22 | 2014-12-24 | 西安航空动力股份有限公司 | Pressure test tool with function of axial deformation compensation |
| CN105024158A (en) * | 2015-06-23 | 2015-11-04 | 中国航空工业集团公司西安飞机设计研究所 | Early warning radar and aircraft provided with same |
| CN105024158B (en) * | 2015-06-23 | 2018-11-13 | 中国航空工业集团公司西安飞机设计研究所 | A kind of early warning radar and the aircraft with it |
| CN104976461A (en) * | 2015-06-30 | 2015-10-14 | 胡立功 | Rotary expansion joint component for water pipes |
| CN106151729A (en) * | 2016-08-25 | 2016-11-23 | 南通艾迈特机械有限公司 | A kind of pipeline compensator |
| CN106151729B (en) * | 2016-08-25 | 2018-10-09 | 南通艾迈特机械有限公司 | A kind of pipeline compensator |
| CN107370337A (en) * | 2017-08-16 | 2017-11-21 | 江苏磁谷科技股份有限公司 | A kind of vertical mounting structure of permanent magnet clutch, vertical installation method and ON-LINE SEPARATION and repositioning method |
| CN107370337B (en) * | 2017-08-16 | 2024-01-26 | 江苏磁谷科技股份有限公司 | Vertical installation structure and method of permanent magnet coupler and online separation and resetting method |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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Application publication date: 20140910 |