CN105114746A - Direct-embedded double-bellow expansion joint - Google Patents
Direct-embedded double-bellow expansion joint Download PDFInfo
- Publication number
- CN105114746A CN105114746A CN201510576275.4A CN201510576275A CN105114746A CN 105114746 A CN105114746 A CN 105114746A CN 201510576275 A CN201510576275 A CN 201510576275A CN 105114746 A CN105114746 A CN 105114746A
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- CN
- China
- Prior art keywords
- pipe
- shell
- bellows
- bellow
- guide sleeve
- 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
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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
- F16L51/00—Expansion-compensation arrangements for pipe-lines
- F16L51/02—Expansion-compensation arrangements for pipe-lines making use of bellows or an expansible folded or corrugated tube
- F16L51/03—Expansion-compensation arrangements for pipe-lines making use of bellows or an expansible folded or corrugated tube comprising two or more bellows
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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
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joints Allowing Movement (AREA)
Abstract
The invention discloses a direct-embedded double-bellow expansion joint. The direct-embedded double-bellow expansion joint comprises an end pipe, a sliding sleeve, an inner pipe, bellow pipes, a housing, a guide sleeve, a pipe shell and screw rods, wherein an interface radially penetrating through the pipe wall is formed in the guide sleeve; internal leakage media discharged by the interface are damage alarm signals of the bellow pipe in the left position; the screw rods which are axially connected with one another are uniformly distributed at the periphery of the pipe shell; the screw rods are assembled and disassembled according to the working state of the bellow pipe in the right position. Through the direct-embedded double-bellow expansion joint, the alarm signals are output by the interface, so that the failure points can be accurately located, and the waste caused by blindly digging and finding the failure points can be reduced; most importantly, the bellow pipe in the right position is used for effectively replacing displacement and compensation actions of the bellow pipe in the left position; the precious maintenance time can be gained; the continuous steam supply of a pipe network in the service life can be ensured; the loss of the user is reduced.
Description
Technical field
The present invention relates to a kind of pipe safety device, specifically, the present invention relates to a kind of expansion joint, particularly a kind of directly buried type dual ripple expansion joint.This expansion joint has internal leakage remote alarm interface, is convenient to service conduit of fixing a point.
Background technique
The main pipeline majority of district heat supply network and industrial heat distribution pipe network adopts buried pattern to connect up.Heat distribution pipe network is in transmission medium process, and Yin Wendu, pressure or load variations and produce some blind plate thrust and displacements at random, cause heat distribution pipe network to run thus uneven, easily cause associated device and Pipeline damage.For reducing the destructiveness that pipeline imbalance is brought in engineering, usually at the related node configuring pipes safety installations of heat distribution pipe network.Expansion joint belongs to the one in pipe safety device, and it is out of shape by bellows comes blind plate thrust in extraction duct and compensate for displacement, thus reaches the object of ducts safe operation.The directly buried type corrugated expansion joint of prior art is primarily of shell, bellows and pipe joint composition, and bellows belongs to elastic compensation element, and because tube wall is thinner easily damaged, in order to accomplish available protecting bellows, bellows is placed among shell by prior art.Although this kind of operator guards is very simple, effective, can accomplish that built-in corrugated pipe can not damage without reason.But; this kind of closed operator guards Problems existing is also very obvious; once there is stress fatigue inefficacy in namely built-in bellows; abort situation cannot be determined in scene; can only search along the exploratory excavation of pipeline or all fronts trench digging, begin in this kind of trouble shoot mode Taiyuan, except a large amount of human and material resources of consumption; greatest problem easily causes large size to stop vapour accident, brings economic loss to user.
Summary of the invention
The present invention mainly for the deficiencies in the prior art, propose a kind of structure simple, make easily, voltage endurance capability is strong, compensate flexibly, is furnished with the directly buried type dual ripple expansion joint of internal leakage remote alarm interface.
The present invention is achieved through the following technical solutions technical goal.
Directly buried type dual ripple expansion joint, it comprises end pipe, sliding sleeve, interior pipe, bellows, shell, guide sleeve, shell and screw rod.Described end pipe and interior pipe are the thin-wall circular tube that bore is identical, be in end pipe in shell inner cavity and interior pipe is coaxial, but alternately, end pipe wherein and shell left port are tightly connected, the pipe in shell left end inner chamber that contracts is fixedly connected with sliding sleeve, sliding sleeve cylindrical and outer casing inner wall Spielpassung.Described guide sleeve is directly enclosed within the outer wall of interior pipe stage casing, both Spielpassung, and connect bellows at guide sleeve two ends co-axial seal, the outer wall that the bellows another two ends mouth of pipe coordinates with interior pipe is respectively tightly connected, and forms two bellows integrations thus.The right output port of described shell and the left port of shell are fixedly attached on the outer wall of guide sleeve respectively, the bellows of the left position of the shell seal of locating with this, the bellows of the right position of the shell enclosure.Its improvements are: described guide sleeve is provided with the interface of radial through tube wall, and the bellows internal leakage medium that interface forms left position arranges passage and faiture alarm signal source output channel outward.The uniform screw rod axially connected in described shell periphery, lays down screw rod, cancels and limiting the axis of right position bellows, form two bellows linkage structures.
As further improvement project, between described guide sleeve and interior pipe, monolateral gap is 1 ~ 2mm.
The present invention compared with prior art, has following good effect:
1, bi-bellow conjuncted structure is simple, makes easily;
2, under nominal situation, the bellows being in right position is locked by external screw rod, the only bellows work of left position, bellows once left position is damaged accident, lay down screw rod online, the bellows being substituted left position by the bellows of right position runs, and this behave can win engineering time, guarantees that pipe network continues steam supply within the spreadable life;
What 3, reserve between guide sleeve and interior pipe is the passage that medium internal leakage is circulated compared with wide arc gap, and run duration is once the bellows of left position damages, and a part of medium exports from interface through gap, and another part then has the bellows inner chamber entering right position.The medium exported from interface forms internal leakage alarm signal, and favourable promptly and accurately localized accident point, greatly reduces Diagnostic Time, avoids blindly trench digging grooving construction, saves artificial, save maintenance expenses.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments, the invention will be further described.
Directly buried type dual ripple expansion joint shown in Fig. 1 is supporting in district heat supply network, and it comprises end pipe 1, sliding sleeve 2, interior pipe 3, bellows 4, shell 5, guide sleeve 6, shell 7 and screw rod 8.Described end pipe 1 and interior pipe 3 are the mutually existing thin-wall circular tube of bore, and its bore is nominal rating.End pipe 1 in structure is coaxial with interior pipe 3, jointly with shell 5 for benchmark is installed, end pipe 1 is tightly connected with shell 5 left port, and the pipe 3 in shell 5 left end inner chamber that contracts is fixedly connected with sliding sleeve 2, and sliding sleeve 2 cylindrical is directly and shell 5 inwall Spielpassung.Described guide sleeve 6 both played leading role in the structure, also played the effect connecting bellows 4.Guide sleeve 6 is directly enclosed within the outer wall of interior pipe 3 stage casing, both Spielpassung, and the present embodiment is relatively little because of specification, only between guide sleeve 6 and interior pipe 3, reserves monolateral gap 1.5mm.The outer wall that the other end being placed on 6 two ends respectively each connection bellowss 4, two bellowss 4 in guiding then coordinates with interior pipe 3 is respectively tightly connected, formation two bellows 4 linkage structures thus.The right output port of described shell 5 and the left port of shell 7 are fixedly attached on the outer wall of guide sleeve 6 respectively, and the shell 5 of locating with this closes the bellows 4 of left position, the bellows 4 of the right position of shell 7 enclosure.The present invention is provided with the interface 6.1 of radial through tube wall at guide sleeve 6, and the bellows 4 internal leakage medium that the channeling of interface 6.1 forms left position arranges passage outward.The uniform screw rod 8 axially connected in described shell 7 periphery, the pile crown that screw rod 8 two ends are connected with guide sleeve 6 and interior pipe 3 right-hand member outer wall respectively fits in demountable structure, and handling screw rod 8 is determined according to bellows 4 working state of right position.
Under nominal situation condition, in the present invention, two bellows 4 linking mechanisms are failure to actuate, and first lock the bellows 4 of right position with screw rod 8, only stay the bellows 4 of left position to do normal displacement and compensate.If stress fatigue damage occurs the bellows 4 of left position during pipe network operation, the internal leakage medium of generation enters two passages.First passage is the interface 6.1 on guide sleeve 6 tube wall, and output medium stream is failure alarm signal from here, and this alarm signal can be used as the signal source of monitoring or remote monitoring on the spot.The signal that receives the report for police service lays down screw rod 8 immediately online, cancels and limiting the axis of the bellows 4 of right position, and the bellows 4 of right position links with the bellows of left position.Second passage of internal leakage medium is the matching gap of guide sleeve 6 and interior pipe 3, enter bellows 4 inner chamber of right position through matching gap place, because the bellows 4 of right position is in serviceable condition, and be tightly connected with interior pipe 3, do not produce external leakage, so pipe network still keeps normal pressure to run.The present invention, by interface 6.1 output alarm signal, is convenient to accurate fault point, the waste that minimizing is blindly found and brought.The most important thing is that the bellows 4 by right position effectively substitutes displacement and the compensating movement of the bellows 4 of left position, valuable engineering time can be won, guarantee that pipe network continues steam supply within the spreadable life, reduce the loss of user.
Claims (2)
1. a directly buried type dual ripple expansion joint, it comprises end pipe (1), sliding sleeve (2), interior pipe (3), bellows (4), shell (5), guide sleeve (6), shell (7) and screw rod (8); Described end pipe (1) and interior pipe (3) are the identical thin-wall circular tube of bore, be in end pipe (1) in shell (5) inner chamber and interior pipe (3) is coaxial, but alternately, end pipe (1) wherein and shell (5) left port are tightly connected, the interior pipe (3) of contracting in shell (5) left end inner chamber is fixedly connected with sliding sleeve (2), sliding sleeve (2) cylindrical and shell (5) inwall Spielpassung; Described guide sleeve (6) is directly enclosed within the outer wall of interior pipe (3) stage casing, both Spielpassung, bellows (4) is connected at guide sleeve (6) two ends co-axial seal, the outer wall that bellows (4) the another two ends mouth of pipe coordinates with interior pipe (3) is respectively tightly connected, and forms two bellows (4) integrations thus; The right output port of described shell (5) and the left port of shell (7) are fixedly attached on the outer wall of guide sleeve (6) respectively, and the shell (5) of locating with this closes the bellows (4) of left position, the bellows (4) of the right position of shell (7) enclosure; It is characterized in that: described guide sleeve (6) is provided with the interface (6.1) of radial through tube wall, bellows (4) the internal leakage medium that interface (6.1) forms left position arranges passage and the output of faiture alarm signal source outward; The uniform screw rod (8) axially connected in described shell (7) periphery, lays down screw rod (8), cancels and limiting the axis of right position bellows (4), form two bellows (4) linkage structures.
2. directly buried type dual ripple expansion joint according to claim 1, is characterized in that: between described guide sleeve (6) and interior pipe (3), monolateral gap is 1 ~ 2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510576275.4A CN105114746A (en) | 2015-09-11 | 2015-09-11 | Direct-embedded double-bellow expansion joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510576275.4A CN105114746A (en) | 2015-09-11 | 2015-09-11 | Direct-embedded double-bellow expansion joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105114746A true CN105114746A (en) | 2015-12-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510576275.4A Pending CN105114746A (en) | 2015-09-11 | 2015-09-11 | Direct-embedded double-bellow expansion joint |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100597885B1 (en) * | 2006-01-17 | 2006-07-06 | 주식회사 포항다께다 | The duplex method of expansion joint |
| CN202125701U (en) * | 2011-05-29 | 2012-01-25 | 石家庄巨力科技有限公司 | Expansion joint for pipe |
| CN103486392A (en) * | 2013-09-30 | 2014-01-01 | 江苏百新波纹管有限公司 | Direct burial inside and outside pressure automatic alarming bellow expansion joint |
| CN203549245U (en) * | 2013-09-30 | 2014-04-16 | 江苏百新波纹管有限公司 | Directly-buried internal-and-external-pressure automatic-alarming corrugated expansion joint |
| CN103912752A (en) * | 2014-03-31 | 2014-07-09 | 大连科华热力管道有限公司 | Steel-sleeving-steel directly-buried internal-pressure type compensator with leakage point troubleshooting device |
| CN203730996U (en) * | 2014-03-14 | 2014-07-23 | 江苏曙光压力容器有限公司 | Balanced buried compensator |
| CN205037018U (en) * | 2015-09-11 | 2016-02-17 | 江苏中远管道设备有限公司 | Two ripple expansion joints of direct burial |
-
2015
- 2015-09-11 CN CN201510576275.4A patent/CN105114746A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100597885B1 (en) * | 2006-01-17 | 2006-07-06 | 주식회사 포항다께다 | The duplex method of expansion joint |
| CN202125701U (en) * | 2011-05-29 | 2012-01-25 | 石家庄巨力科技有限公司 | Expansion joint for pipe |
| CN103486392A (en) * | 2013-09-30 | 2014-01-01 | 江苏百新波纹管有限公司 | Direct burial inside and outside pressure automatic alarming bellow expansion joint |
| CN203549245U (en) * | 2013-09-30 | 2014-04-16 | 江苏百新波纹管有限公司 | Directly-buried internal-and-external-pressure automatic-alarming corrugated expansion joint |
| CN203730996U (en) * | 2014-03-14 | 2014-07-23 | 江苏曙光压力容器有限公司 | Balanced buried compensator |
| CN103912752A (en) * | 2014-03-31 | 2014-07-09 | 大连科华热力管道有限公司 | Steel-sleeving-steel directly-buried internal-pressure type compensator with leakage point troubleshooting device |
| CN205037018U (en) * | 2015-09-11 | 2016-02-17 | 江苏中远管道设备有限公司 | Two ripple expansion joints of direct burial |
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| C06 | Publication | ||
| PB01 | Publication | ||
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Application publication date: 20151202 |