CN2265469Y - Inner-pressure outer-protection all-closed multi-layer expansion joint - Google Patents
Inner-pressure outer-protection all-closed multi-layer expansion joint Download PDFInfo
- Publication number
- CN2265469Y CN2265469Y CN 95234953 CN95234953U CN2265469Y CN 2265469 Y CN2265469 Y CN 2265469Y CN 95234953 CN95234953 CN 95234953 CN 95234953 U CN95234953 U CN 95234953U CN 2265469 Y CN2265469 Y CN 2265469Y
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- CN
- China
- Prior art keywords
- expansion joint
- bellows
- flange
- fastening flange
- pipe
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- Expired - Fee Related
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Abstract
The utility model relates to an inner-pressure outer-protection all-closed multi-layer expansion joint, which is an expansion joint with an improved structure used for a heat pipe line. The utility model is characterized in that the outer side of bellows is provided with an outer protective sleeve, and the bellows is isolated from the outside through a left fixing flange, a right fixing flange and a sealing device, so that the bellows can be prevented from the electrochemical corrosion caused by outside air and chloride ion in water; the left fixing flange and the right fixing flange are arranged at both ends of the outer protective sleeve. The utility model has the advantages that with the all-closed structure, the bellows is protected against corrosion, so that the service life is long; once the bellows breaks, substance in the pipe can not flow outside, so that people can repair instantly, the occurrence of accidents are prevented, and the utility model is safe and reliable.
Description
The utility model relates to a kind of improvement of corrugated expansion joint structure, is a kind of interior totally-enclosed multilayer expansion joint of outer protection of pressing specifically.
Present expansion joint structure used in heat distribution pipeline, its corrosion-resistant thermal insulation poor-performing.General expansion joint is to select for use stainless steel ripple software and carbon steel link to be welded through argon arc welding.In inspection shaft, be soaked in the water, or be embedded in underground, by around the sewage etch.Since the existence of chlorion in the water, or when chloride ion content surpasses some, will produce electrochemical corrosion at stainless steel and carbon steel weld, quicken the destruction of joint, the life-span of expansion joint is shortened greatly.The bellows that has is long, expands nodal axisn easily to unstability, and expansion joint is destroyed easily, causes pipeline internal medium to leak, and serious can cause a serious accident.
The utility model purpose is to overcome the shortcoming in the above-mentioned technology; a kind of interior totally-enclosed multilayer expansion joint of outer protection of pressing is proposed; make full-closed structure of the outside formation of bellows; stop chlorion in the empty G﹠W to the corrosion failure of bellows weld, thereby prolong the working life of bellows expansion joint.
The utility model purpose is realized by following technological scheme: press the totally-enclosed multilayer expansion joint of outer protection in this; its left end pipe and right-hand member pipe are welded to connect with left fastening flange and right loose flange respectively; the bellows two ends that the spacer flanger two sides is welded to connect are welded to connect with left fastening flange and right loose flange respectively; the oversheath two ends are welded to connect respectively on left fastening flange and right fastening flange; circle leaves the gap with right-hand member pipe outer wall in the right fastening flange; the seal arrangement that links together with right fastening flange right flank is enclosed within on the right-hand member pipe outer wall, and with bolt seal arrangement is connected with sealing flange.
Bellows is one or more layers, and its number of plies is 1～7.According to the size and the stressing conditions of bellows, the thickness and the number of plies of bellows selected in decision.Make it both meet requirement of strength, reduced rigidity again.Its seal arrangement is high temperature resistant graphite to be housed being connected between internal surface of sleeve pipe between right fastening flange and the sealing flange and the right-hand member pipe outer wall, asbestos seal spare is equipped with at two ends, along 4-8 screw being arranged on the sleeve pipe cylindrical wall and compressing, generally select asbestos packing for use with plug screw.Graphite and asbestos packing evenly have seal action, and bellows is isolated from the outside out, is not subjected in the ambient air and the corrosion of chlorion in the water.When needs are injected graphite in sleeve pipe, turn on plug screw, from screw, inject graphite, tighten plug screw then.Water conservancy diversion overlaps an end and is connected on the left end pipe as import one end.When MEDIA FLOW is fashionable, flow along the water conservancy diversion cover, both reduced resistance, can not impact bellows yet, can protect bellows.Can select different thermal insulating materials to wrap in interior outside of pressing the totally-enclosed multilayer expansion joint of outer protection, to prevent the dissipation of heat energy waste according to the temperature difference of flowing medium in the pipeline.
The utility model advantage is owing to adopt full-closed structure, in bellows outside by left fastening flange, oversheath, right fastening flange, seal arrangement, sealing flange, bellows is hedged off from the outer world, can not be subjected to the corrosion of chlorion in ambient air and the water, prolonged the working life of bellows expansion joint, in a single day bellows breaks, and also can not cause the excessive of the interior flowing medium of pipe, causes the accident.Can in time rush to repair the normal operation in back, prevent that major accident from taking place, safe and reliable.
Embodiment of accompanying drawings:
Fig. 1 is the structural drawing of the totally-enclosed multilayer expansion joint of the outer protection of interior pressure.
Should interiorly press the totally-enclosed multilayer expansion joint of outer protection; its left end pipe (1) and right-hand member pipe (14) are welded to connect with left fastening flange (2) and right loose flange (7) respectively, and bellows (3) two ends that spacer flanger (4) two sides is welded to connect are welded to connect with left fastening flange (2) and right loose flange (7) respectively.Oversheath (6), left fastening flange (2), right fastening flange (8), seal arrangement are isolated from the outside out corrugated tube (3), prevent that chlorion is to its electrochemical corrosion in ambient air and the water.Seal arrangement is made up of the sleeve pipe (13) that is connected right fastening flange (8) right side, high temperature resistant graphite (10), asbestos seal spare (9).Sleeve pipe (13) is connected a side of sealing flange (12) with connecting bolt (11).When because external temperature changes, when pipeline expanded with heat and contract with cold, the right-hand member pipe can be eliminated thermal stress along the axial direction displacement.
Claims (4)
1, a kind of interior totally-enclosed multilayer expansion joint of outer protection of pressing; its left end pipe and right-hand member pipe are welded to connect with left fastening flange and right loose flange respectively; the bellows two ends that the spacer flanger two sides is welded to connect are welded to connect with left fastening flange and right movable loose flange respectively; it is characterized in that the oversheath two ends are welded to connect respectively on left fastening flange and right fastening flange; circle leaves the gap with right-hand member pipe outer wall in the right fastening flange; the seal arrangement that welds together with right fastening flange right flank is enclosed within on the right-hand member pipe outer wall, and with bolt seal arrangement is connected with sealing flange.
2, according to the described interior totally-enclosed multilayer expansion joint of outer protection of pressing of claim 1, it is characterized in that bellows is one or more layers, its number of plies is 1～7 layer.
3, according to the described interior totally-enclosed multilayer expansion joint of outer protection of pressing of claim 1; be characterised in that altogether seal arrangement is high temperature resistant graphite to be housed being connected between internal surface of sleeve pipe between right fastening flange and the sealing flange and the right-hand member pipe outer wall; asbestos seal spare is equipped with at two ends; along 4～8 screws are arranged on the sleeve pipe cylindrical wall, and compress with plug screw
4, press the totally-enclosed multilayer expansion joint of outer protection according to claim 1 in described, it is characterized in that water conservancy diversion overlaps an end and is connected on the left end pipe as import one end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95234953 CN2265469Y (en) | 1995-10-26 | 1995-10-26 | Inner-pressure outer-protection all-closed multi-layer expansion joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95234953 CN2265469Y (en) | 1995-10-26 | 1995-10-26 | Inner-pressure outer-protection all-closed multi-layer expansion joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2265469Y true CN2265469Y (en) | 1997-10-22 |
Family
ID=33878744
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95234953 Expired - Fee Related CN2265469Y (en) | 1995-10-26 | 1995-10-26 | Inner-pressure outer-protection all-closed multi-layer expansion joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2265469Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103791195A (en) * | 2014-01-21 | 2014-05-14 | 沈阳宏奇热力设备制造有限公司 | Double-safety directly-buried corrugated pipe compensator |
| CN104132214A (en) * | 2014-07-10 | 2014-11-05 | 江苏百新波纹管有限公司 | Duplex pipeline compensator |
| US9822916B2 (en) | 2014-03-18 | 2017-11-21 | Omachron Intellectual Property Inc. | Expansion compensator with multiple layers with differing stiffness |
| US10046510B2 (en) | 2014-03-25 | 2018-08-14 | Omachron Intellectual Property Inc. | Methods of manufacturing an expansion compensator |
| CN108488528A (en) * | 2018-04-25 | 2018-09-04 | 江苏苏亚迪炭材有限公司 | A kind of telescopic compensator for steel flue |
| US10697575B2 (en) | 2014-06-26 | 2020-06-30 | Omachron Intellectual Property Inc. | Expansion compensator |
-
1995
- 1995-10-26 CN CN 95234953 patent/CN2265469Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103791195A (en) * | 2014-01-21 | 2014-05-14 | 沈阳宏奇热力设备制造有限公司 | Double-safety directly-buried corrugated pipe compensator |
| US9822916B2 (en) | 2014-03-18 | 2017-11-21 | Omachron Intellectual Property Inc. | Expansion compensator with multiple layers with differing stiffness |
| US10046510B2 (en) | 2014-03-25 | 2018-08-14 | Omachron Intellectual Property Inc. | Methods of manufacturing an expansion compensator |
| US10697575B2 (en) | 2014-06-26 | 2020-06-30 | Omachron Intellectual Property Inc. | Expansion compensator |
| CN104132214A (en) * | 2014-07-10 | 2014-11-05 | 江苏百新波纹管有限公司 | Duplex pipeline compensator |
| CN108488528A (en) * | 2018-04-25 | 2018-09-04 | 江苏苏亚迪炭材有限公司 | A kind of telescopic compensator for steel flue |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |