CN204164550U - A kind of pipeline extension device of triple seal structure - Google Patents

A kind of pipeline extension device of triple seal structure Download PDF

Info

Publication number
CN204164550U
CN204164550U CN201420600669.XU CN201420600669U CN204164550U CN 204164550 U CN204164550 U CN 204164550U CN 201420600669 U CN201420600669 U CN 201420600669U CN 204164550 U CN204164550 U CN 204164550U
Authority
CN
China
Prior art keywords
sleeve
pipe
seal
interior pipe
ladder
Prior art date
Application number
CN201420600669.XU
Other languages
Chinese (zh)
Inventor
王政
赵中平
许冬成
王小阳
李雪梅
Original Assignee
金川集团股份有限公司
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 金川集团股份有限公司 filed Critical 金川集团股份有限公司
Priority to CN201420600669.XU priority Critical patent/CN204164550U/en
Application granted granted Critical
Publication of CN204164550U publication Critical patent/CN204164550U/en

Links

Abstract

The utility model relates to Pipe installing equipment technical field, disclose a kind of pipeline extension device of triple seal structure, it comprises interior pipe, adapter, outer sleeve, the adpting flange be connected with pipeline, one end of outer sleeve and a splaying of interior pipe are socketed, the other end and the adapter of outer sleeve are tightly connected, the top, one end that interior pipe and outer sleeve socket-connect is provided with ladder pipe, lead for gap between the outer wall of ladder pipe and the inwall of outer sleeve and coordinate, the outer wall of ladder pipe is provided with two annular seal grooves, rectangular seal is embedded with in one of them seal groove, y-type seal ring is embedded with in another seal groove, stuffing box packing part is provided with in the cavity that interior pipe and the outer sleeve section of socket-connecting are formed.The utility model is provided with triple seal structure, good sealing effect, and service behaviour is safe and reliable; The axial stable movement of interior pipe registration during compensating movement, interior pipe, flexibly, the sealing material even wearing between interior pipe and outer sleeve, significantly improves working life of the present utility model.

Description

A kind of pipeline extension device of triple seal structure
Technical field
The utility model relates to Pipe installing equipment technical field, specifically the pipeline extension device of the reliable a kind of triple seal structure of performance safety.
Background technique
The features such as pipeline extension device is a kind of pipe safety device of general structure, and be mainly used in compensating the axial displacement that causes of pipe stress and radially reverse, it is simple that it has structure, and bearing capacity is strong, and the little and compensation rate of flow resistance is large.Existing pipeline extension device is all insert seal ring or stuffing box packing in the axial seal structure between interior pipe and outer sleeve mostly, with gland, sealing material is compressed formation auxiliary seal in axial seal structure, carry out the sealing between interior pipe and outer sleeve by seal ring or stuffing box packing.This kind of sealing configuration is after pipeline long-time running, and relative movement makes interior pipe produce corresponding wearing and tearing to the auxiliary packing material between outer sleeve frequently, must cause seal failure when wearing and tearing reach extreme value and leak.The sealing problem of pipeline extension device, not only relates to energy-conservation and pollutes, and being related to the safety of pipe-networks engineering and permanently effective operation.
Model utility content
The purpose of this utility model is to provide a kind of pipeline extension device of triple seal structure, and to solve, existing pipeline extension device sealing material after pipeline long-time running easily weares and teares, seal failure, brings the problem of potential safety hazard.
For solving the problems of the technologies described above, technical solution adopted in the utility model is:
A kind of pipeline extension device of triple seal structure, it comprises interior pipe, adapter, outer sleeve, the adpting flange be connected with pipeline, one end of outer sleeve and a splaying of interior pipe are socketed, the other end and the adapter of outer sleeve are tightly connected, the top, one end that described interior pipe and outer sleeve socket-connect is provided with ladder pipe, lead for gap between the outer wall of described ladder pipe and the inwall of described outer sleeve and coordinate, the outer wall of described ladder pipe is provided with two annular seal grooves, rectangular seal is embedded with in one of them seal groove, y-type seal ring is embedded with in another seal groove, stuffing box packing part is provided with in the cavity that described interior pipe and the described outer sleeve section of socket-connecting are formed.
As further improvement of the utility model, in the middle part of described outer sleeve, inwall is provided with boss, and in forming, pipe moves axially position-limit mechanism.
Further improve as of the present utility model, end, one end outer wall that described outer sleeve and described interior pipe socket-connect is provided with flange, and described flange is connected with the supported flange be arranged on outer wall of inner tube by bolt assembly.
Further improve as of the present utility model, described stuffing box packing part is the composition of flexible graphite stuffing and graphite annulus.
The utility model has following beneficial effect:
(1), the utility model is provided with ladder pipe in the socket end end of described interior pipe and described outer sleeve, the y-type seal ring of setting-in in the annular seal groove of ladder pipe, and the lip limit relying on it to open is affixed on sealing pair coupled face; During without interior pressure, the distortion of procheilon and produce very little contact pressure; When sealing, the every bit contacted with sealing medium all has the normal pressure equal with pressure medium, so will be subject to axial compression bottom lip circle, lip will be subject to circumference compression, contact broaden with sealing surface, and contact stress increases simultaneously; When interior pressure raises again, distribution form and the size of contact change further, and lip coordinates tightr with sealing surface, its sealability is strengthened.In another annular seal groove of described ladder pipe, the rectangular seal of setting-in serves the effect supporting and prevent outside dirt from entering the cavity that described interior pipe and outer sleeve belled part are formed, can stuffing box packing part in available protecting cavity not contaminated.The utility model is provided with triple seal structure, and sealing effect is better, and service behaviour is safe and reliable;
(2), described interior pipe adopts cascade guide structure, in the middle part of described outer sleeve, inwall is provided with positive stop lug boss, significantly improve the positioning precision of interior pipe, the coaxial cooperation precision of pipe and outer sleeve in improving, during compensating movement axial motion more steadily, more flexible, sealing material even wearing between interior pipe and outer sleeve, significantly improves working life of the present utility model;
(3), the utility model structure is simple, easy to manufacture, easy for installation.
Accompanying drawing explanation
Fig. 1 of the present utility modelly partly cuts open structural representation;
In figure: 1, adpting flange, 2, interior pipe, 3, supported flange, 4, stuffing box packing part, 5, outer sleeve, 6, rectangular seal, 7, y-type seal ring, 8, adapter, 9, bolt assembly, 10, boss, 11, flange, 12, seal groove, 13, ladder pipe.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
The pipeline extension device of a kind of triple seal structure as shown in Figure 1, it comprises interior pipe 2, adapter 8, outer sleeve 5, the adpting flange 1 be connected with pipeline, one end of outer sleeve 5 and a splaying of interior pipe 2 are socketed, the other end and the adapter 8 of outer sleeve 5 are tightly connected, the top, one end that interior pipe 2 and outer sleeve 5 socket-connect is provided with ladder pipe 13, lead for gap between the outer wall of ladder pipe 13 and the inwall of outer sleeve 5 and coordinate, the outer wall of ladder pipe 13 is provided with two annular seal grooves 12, rectangular seal 6 is embedded with in one of them seal groove 12, y-type seal ring 7 is embedded with in another seal groove 12, the stuffing box packing part 4 be made up of the composition of flexible graphite stuffing and graphite annulus is provided with in the cavity that interior pipe 2 and outer sleeve 5 section of socket-connecting are formed.
In the middle part of outer sleeve 5, inwall is provided with boss 10, and in forming, pipe 2 moves axially position-limit mechanism.End, one end outer wall that outer sleeve 5 and interior pipe 2 socket-connect is provided with flange 11, and flange 11 is connected with the supported flange 3 be arranged on interior pipe 2 outer wall by bolt assembly 9.
The stuffing box packing part 4 of filling in the cavity that the utility model is formed by interior pipe 2 and outer sleeve 5 section of socket-connecting, rectangular seal 6, y-type seal ring 7 constitute triple seal structure, make sealability of the present utility model high, safe and reliable, extend the working life of Sealing.

Claims (4)

1. the pipeline extension device of a triple seal structure, it comprises interior pipe (2), adapter (8), outer sleeve (5), the adpting flange (1) be connected with pipeline, one end of outer sleeve (5) and a splaying of interior pipe (2) are socketed, the other end and the adapter (8) of outer sleeve (5) are tightly connected, it is characterized in that: the top, one end that described interior pipe (2) and outer sleeve (5) socket-connect is provided with ladder pipe (13), lead for gap between the outer wall of described ladder pipe (13) and the inwall of described outer sleeve (5) and coordinate, the outer wall of described ladder pipe (13) is provided with two annular seal grooves (12), rectangular seal (6) is embedded with in one of them seal groove (12), y-type seal ring (7) is embedded with in another seal groove (12), stuffing box packing part (4) is provided with in the cavity that described interior pipe (2) and described outer sleeve (5) section of socket-connecting are formed.
2. the pipeline extension device of a kind of triple seal structure according to claim 1, is characterized in that: described outer sleeve (5) middle part inwall is provided with boss (10), and in forming, pipe (2) moves axially position-limit mechanism.
3. the pipeline extension device of a kind of triple seal structure according to claim 1 and 2, it is characterized in that: end, one end outer wall that described outer sleeve (5) and described interior pipe (2) socket-connect is provided with flange (11), and described flange (11) is connected with the supported flange (3) be arranged on interior pipe (2) outer wall by bolt assembly (9).
4. the pipeline extension device of a kind of triple seal structure according to claim 1, is characterized in that: the composition that described stuffing box packing part (4) is flexible graphite stuffing and graphite annulus.
CN201420600669.XU 2014-10-17 2014-10-17 A kind of pipeline extension device of triple seal structure CN204164550U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420600669.XU CN204164550U (en) 2014-10-17 2014-10-17 A kind of pipeline extension device of triple seal structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420600669.XU CN204164550U (en) 2014-10-17 2014-10-17 A kind of pipeline extension device of triple seal structure

Publications (1)

Publication Number Publication Date
CN204164550U true CN204164550U (en) 2015-02-18

Family

ID=52538237

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420600669.XU CN204164550U (en) 2014-10-17 2014-10-17 A kind of pipeline extension device of triple seal structure

Country Status (1)

Country Link
CN (1) CN204164550U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104534211A (en) * 2014-12-31 2015-04-22 刘旸 Pipeline connecting device
CN105371044A (en) * 2015-12-17 2016-03-02 安徽盛运环保工程有限公司 Large-diameter high-temperature-resistant one-way expansion joint
CN110486551A (en) * 2019-07-19 2019-11-22 宁波天生密封件有限公司 A kind of self-energized seal attachment device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104534211A (en) * 2014-12-31 2015-04-22 刘旸 Pipeline connecting device
CN105371044A (en) * 2015-12-17 2016-03-02 安徽盛运环保工程有限公司 Large-diameter high-temperature-resistant one-way expansion joint
CN110486551A (en) * 2019-07-19 2019-11-22 宁波天生密封件有限公司 A kind of self-energized seal attachment device

Similar Documents

Publication Publication Date Title
CN203309102U (en) Oil sleeve external-pressure collapse test sealing device
CN103047506B (en) Seal cage is set to the pipeline compensator on inclined-plane
CN201401510Y (en) Flexible lip-shaped sealing ring
CN204060602U (en) A kind of bimetallic (spring cone) seal formula casing head
CN105464882A (en) Main shaft seal device and axial flow turbine with same
CN104180064A (en) Stop valve
CN202469307U (en) Wedge-type seal rotary joint
CN204391667U (en) Flat cable linear sealing box
CN204349063U (en) A kind of nuclear power case water joint
CN203933225U (en) A kind of pressurized seal structure
CN104676012A (en) Bilateral balanced sealing ring component for sleeve valve
CN202392110U (en) Shaft sealing device of horizontal scraper centrifuge
CN102080651B (en) Long-acting no-leakage plunger sealing structure for plunger type measuring pump
CN202901675U (en) Maintenance-free external pressure directly-buried expansion joint
CN205278506U (en) Novel resistant high pressure isolating valve
CN204002412U (en) A kind of airtight withstand voltage observation port under water
CN105179871A (en) Pipe hole blocking device
CN103629357B (en) The sealing mechanism of vane type rotary valve
CN204372170U (en) A kind of rubber seal improving radial structure
CN103016741A (en) Mixing machine shaft end sealing device
CN203797211U (en) Fast pipe joint
CN204201078U (en) A kind of y-type seal ring
CN202718962U (en) Guiding structure of hydraulic oil cylinder
CN205945001U (en) Cable intermediate head sealing device
CN201801346U (en) Novel hydraulic jack

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant