CN202901675U - Maintenance-free external pressure directly-buried expansion joint - Google Patents

Maintenance-free external pressure directly-buried expansion joint Download PDF

Info

Publication number
CN202901675U
CN202901675U CN 201220513505 CN201220513505U CN202901675U CN 202901675 U CN202901675 U CN 202901675U CN 201220513505 CN201220513505 CN 201220513505 CN 201220513505 U CN201220513505 U CN 201220513505U CN 202901675 U CN202901675 U CN 202901675U
Authority
CN
China
Prior art keywords
plate
guide
expansion joint
pressing plate
ring
Prior art date
Application number
CN 201220513505
Other languages
Chinese (zh)
Inventor
周雄伟
刘向红
吉慧萍
Original Assignee
江苏恒丰波纹管有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 江苏恒丰波纹管有限公司 filed Critical 江苏恒丰波纹管有限公司
Priority to CN 201220513505 priority Critical patent/CN202901675U/en
Application granted granted Critical
Publication of CN202901675U publication Critical patent/CN202901675U/en

Links

Abstract

The utility model relates to a maintenance-free external pressure directly-buried expansion joint comprises an inlet connecting pipe, a guide cylinder, an outer sheath, a corrugated pipe and an outlet connecting pipe, wherein the inlet connecting pipe is connected with the guide cylinder and is connected with the outer sheath by an annular plate; the corrugated pipe is connected with the outer sheath and the outlet connecting pipe; one end of the corrugated pipe is connected with a guide plate by an end ring; the guide plate is connected with the outlet connecting pipe; the other end of the corrugated pipe is connected with the outer sheath by an end plate; the end plate is connected with a guide ring; a seal ring is arranged in a seal cavity which is formed by the guide ring and the outlet connecting pipe; and a pressing plate I is connected with the end plate and presses the seal ring tightly. According to the maintenance-free external pressure directly-buried expansion joint, the corrugated pipe and a double-sealing structure are adopted, and even if the leakage of the corrugated pipe occurs due to fatigue, the double-sealing structure of the expansion joint can block media effectively, so that the leakage of the expansion joint is avoided; and a sealing filler is injected from a material guiding nozzle, so that the expansion joint can be sealed reliably and used normally for a long time to fulfill a maintenance-free aim. The maintenance-free external pressure directly-buried expansion joint is difficult to leak, long in service life, low in maintenance cost and safe and reliable in operation.

Description

Non-maintaining external pressure direct built-in expansion joint
Technical field
The utility model relates to the pipeline extension expansion compensation device, especially a kind of non-maintaining external pressure direct built-in expansion joint that adopts bellows and double seal protection structure.
Background technique
At present, existing heat supply pipeline all needs segmentation that some expansion joints for the compensation pipeline extension are installed, and particularly is embedded in underground length for delivery of high temperature, high-pressure medium apart from heat supply pipeline, and the wall thickness of expansion joint is large, intensity is higher.In the using process, because the extending amount that heat supply pipeline produces is larger, the bellows wave number is more, therefore the bellows of expansion joint needs periodic maintenance or changes expansion joint easily because local leakage appears in fatigue, causes the working life of expansion joint shorter, the workload of safeguarding and changing is large, and cost is higher.
The model utility content
For the deficiency of above existing expansion joint, the purpose of this utility model provides a kind of difficult leakage, long service life, non-maintaining external pressure direct built-in expansion joint in the using process.
The purpose of this utility model is achieved by the following technical solution:
Non-maintaining external pressure direct built-in expansion joint, comprise entrance sleeve, guide shell, oversheath, bellows and discharge connection, the internal surface of described entrance sleeve is connected with guide shell, the outer surface of entrance sleeve is fixedly connected with oversheath by ring flat-plate, described bellows-sheathed is located between oversheath and the discharge connection and is connected with discharge connection with oversheath respectively, described guide shell extend in the discharge connection, one end of described bellows is fixedly connected with guide plate by end ring, guide plate is fixedly connected with the end of discharge connection near entrance sleeve, the other end of described bellows is fixedly connected with the internal surface of oversheath by end plate, and described end plate is connected with sealing packing device;
Described sealing packing device comprises guide ring, seal ring, pressing plate I, described guide ring is fixedly connected with end plate, described seal ring is located in the Seal cage that consists of between guide ring and the discharge connection outer surface, described pressing plate I is provided with bulge loop, and the pressing plate I is connected with end plate by bolt and makes described bulge loop press seal circle.
As optimal technical scheme of the present utility model, described sealing packing device also comprises pressing plate II, stuffing box packing and guide mouth, described pressing plate II is fixedly connected with the pressing plate I, be provided with packing cavity between pressing plate II and the pressing plate I, be provided with stuffing box packing in the packing cavity, described guide mouth is located on the pressing plate II and with packing cavity and is communicated with.
As optimal technical scheme of the present utility model, described stuffing box packing is can pouring-in filler.
As optimal technical scheme of the present utility model, described guide mouth is provided with sealed cap.
As optimal technical scheme of the present utility model, described pressing plate I is connected and fixed by the outer surface of fixed plate and described discharge connection.
The beneficial effects of the utility model are: with respect to prior art; the utility model expansion joint adopts bellows and double seal protection structure; even the bellows of expansion joint local leakage occurs because of fatigue in the using process; the double sealing structure of expansion joint can effectively stop medium, makes expansion joint can not occur on the whole leaking.The utility model can also inject stuffing box packing by the guide mouth, strengthens the sealability of expansion joint, keeps for a long time reliable sealing and normal use of expansion joint, thereby realizes non-maintaining purpose.It is low, safe and reliable that the utility model is difficult for leakage, long service life, maintenance cost.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing and specific embodiment:
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the partial structurtes enlarged diagram at A place among Fig. 1.
Among the figure: 1, entrance sleeve, 2, guide shell, 3, ring flat-plate, 4, guide plate, 5, end ring, 6, bellows, 7, oversheath, 8, seal ring, 9, end plate, 10, the pressing plate I, 11, bolt, 13, discharge connection, 14, guide ring, 15, the pressing plate II, 16, the guide mouth, 17, stuffing box packing.
Embodiment
As depicted in figs. 1 and 2, non-maintaining external pressure direct built-in expansion joint, comprise entrance sleeve 1, guide shell 2, oversheath 7, bellows 6 and discharge connection 13, the internal surface of described entrance sleeve 1 is connected with guide shell 2, the outer surface of entrance sleeve 1 is fixedly connected with oversheath 7 by ring flat-plate 3, bellows 6 is set between oversheath 7 and the discharge connection 13 and is connected with discharge connection with oversheath 7 respectively and is connected, guide shell 2 extend in the discharge connection 13, one end of bellows 6 is fixedly connected with guide plate 4 by end ring 5, guide plate 4 is fixedly connected with the end of discharge connection 13 near entrance sleeve 1, the other end of bellows 6 is fixedly connected with by the internal surface of end plate 9 with oversheath 7, and end plate 9 is connected with sealing packing device.
Described sealing packing device comprises guide ring 14, seal ring 8, pressing plate I 10, guide ring 14 is fixedly connected with end plate 9, seal ring 8 is located in the Seal cage that consists of between guide ring 14 and discharge connection 13 outer surfaces, pressing plate I 10 is provided with bulge loop, and pressing plate I 10 is connected with end plate 9 by bolt 11 and makes described bulge loop press seal circle 8.
In the present embodiment, described sealing packing device also comprises pressing plate II 15, stuffing box packing 17 and guide mouth 16, pressing plate II 15 is fixedly connected with pressing plate I 10, be provided with packing cavity between pressing plate II 15 and the pressing plate I 10, be provided with stuffing box packing 17 in the packing cavity, described guide mouth 16 is located on the pressing plate II 15 and with packing cavity and is communicated with; The described stuffing box packing 17 of present embodiment is can pouring-in filler, and guide mouth 16 is provided with sealed cap.Described pressing plate I 10 is connected and fixed by the outer surface of fixed plate 12 with discharge connection 13.

Claims (5)

1. non-maintaining external pressure direct built-in expansion joint, comprise entrance sleeve (1), guide shell (2), oversheath (7), bellows (6) and discharge connection (13), the internal surface of described entrance sleeve (1) is connected with guide shell (2), the outer surface of entrance sleeve (1) is fixedly connected with oversheath (7) by ring flat-plate (3), described bellows (6) is set between oversheath (7) and the discharge connection (13) and is connected 13 with oversheath (7) with discharge connection respectively) be connected, described guide shell (2) extend in the discharge connection (13), it is characterized in that: an end of described bellows (6) is fixedly connected with guide plate (4) by end ring (5), guide plate (4) is fixedly connected with the end of discharge connection (13) near entrance sleeve, the other end of described bellows (6) is fixedly connected with by the internal surface of end plate (9) with oversheath (7), and described end plate (9) is connected with sealing packing device;
Described sealing packing device comprises guide ring (14), seal ring (8), pressing plate I (10), described guide ring (14) is fixedly connected with end plate (9), described seal ring (8) is located in the Seal cage that consists of between guide ring (14) and discharge connection (13) outer surface, described pressing plate I (10) is provided with bulge loop, and pressing plate I (10) is connected with end plate (9) by bolt (11) and makes described bulge loop press seal circle (8).
2. non-maintaining external pressure direct built-in expansion joint according to claim 1, it is characterized in that: described sealing packing device also comprises pressing plate II (15), stuffing box packing (17) and guide mouth (16), described pressing plate II (15) is fixedly connected with pressing plate I (10), be provided with packing cavity between pressing plate II (15) and the pressing plate I (10), be provided with stuffing box packing (17) in the packing cavity, described guide mouth (16) is located at pressing plate II (15) and upward and with packing cavity is communicated with.
3. non-maintaining external pressure direct built-in expansion joint according to claim 2, it is characterized in that: described stuffing box packing (17) is can pouring-in filler.
4. according to claim 2 or 3 described non-maintaining external pressure direct built-in expansion joints, it is characterized in that: described guide mouth (16) is provided with sealed cap.
5. non-maintaining external pressure direct built-in expansion joint according to claim 1 and 2 is characterized in that: described pressing plate I (10) is connected and fixed by the outer surface of fixed plate (12) with described discharge connection (13).
CN 201220513505 2012-10-08 2012-10-08 Maintenance-free external pressure directly-buried expansion joint CN202901675U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220513505 CN202901675U (en) 2012-10-08 2012-10-08 Maintenance-free external pressure directly-buried expansion joint

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220513505 CN202901675U (en) 2012-10-08 2012-10-08 Maintenance-free external pressure directly-buried expansion joint

Publications (1)

Publication Number Publication Date
CN202901675U true CN202901675U (en) 2013-04-24

Family

ID=48122346

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220513505 CN202901675U (en) 2012-10-08 2012-10-08 Maintenance-free external pressure directly-buried expansion joint

Country Status (1)

Country Link
CN (1) CN202901675U (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN103836293A (en) * 2014-03-21 2014-06-04 江苏鑫晟波纹管有限公司 Novel direct burial anticorrosion bellow expansion joint
CN104295849A (en) * 2014-09-30 2015-01-21 航天晨光股份有限公司 Large compensation external pressing type expansion joint with heat preservation reset
CN105465530A (en) * 2016-01-18 2016-04-06 航天晨光股份有限公司 Pressure balance type sleeve compensator

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN103836293A (en) * 2014-03-21 2014-06-04 江苏鑫晟波纹管有限公司 Novel direct burial anticorrosion bellow expansion joint
CN104295849A (en) * 2014-09-30 2015-01-21 航天晨光股份有限公司 Large compensation external pressing type expansion joint with heat preservation reset
CN104295849B (en) * 2014-09-30 2016-06-08 航天晨光股份有限公司 With the large compensation amount External Pressure Type expansion joint that insulation resets
CN105465530A (en) * 2016-01-18 2016-04-06 航天晨光股份有限公司 Pressure balance type sleeve compensator

Similar Documents

Publication Publication Date Title
CN204664681U (en) A kind of high-temperature flange pad profile of tooth contact linkage structure
CN201561232U (en) Residual powder-free wearproof three-dimensional compensator dedicated for powder feeding pipeline
CN203098196U (en) Packing seal device of gas compressor
CN207333279U (en) A kind of slurry discharge pump mechanical seal device
CN103470885B (en) Fixing part used for fixing water heater pipeline
CN103047506B (en) Seal cage is set to the pipeline compensator on inclined-plane
CN206104119U (en) Wet electric high frequency electric source insulator chamber protects compacting and seals structure
CN206036442U (en) Quick -operation joint that pipe is connected
CN206191105U (en) Highly pressurised liquid two way seal pipe joint
CN203189317U (en) Mechanical balanced type soft stuffing shaft seal for pump
CN106322049B (en) A kind of fastening type isolation agent injecting type pipeline jig
CN204611153U (en) A kind of flange sealing structure that effectively can reduce leak-down rate
CN101608723B (en) Non-maintaining sleeve compensator with double sealing structures
CN201535741U (en) Pipeline seal device for pipeline hydrostatic test
CN204459547U (en) A kind of pipeline sealing device
CN102425520A (en) Embedded oil charging structure for high-pressure fuel oil system
CN201507759U (en) Quick pipeline leak processor
CN104019324B (en) The quick maintenance device of Underwater Two-layer oil transport pipeline
CN201925009U (en) Sealing ring for engine cooling water pipe
CN201705922U (en) Metal spring embedded seal box
CN204164550U (en) A kind of pipeline extension device of triple seal structure
CN203847883U (en) Maintenance-free self-sealing sleeve compensator
CN101070841A (en) High-pressure-resistant wear-resisting contact type reciprocation sealing with washing ring
CN203670790U (en) Counter-pull-type packing shaft sealing structure for reciprocating pump
CN204164363U (en) Multistage split type seal arrangement

Legal Events

Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130424

Termination date: 20151008

EXPY Termination of patent right or utility model