CN206093344U - A single entry pull rod expansion joint for on cryo equipment connecting tube - Google Patents
A single entry pull rod expansion joint for on cryo equipment connecting tube Download PDFInfo
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- CN206093344U CN206093344U CN201620735340.3U CN201620735340U CN206093344U CN 206093344 U CN206093344 U CN 206093344U CN 201620735340 U CN201620735340 U CN 201620735340U CN 206093344 U CN206093344 U CN 206093344U
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- nut
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- pull rod
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- expansion joint
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Abstract
The utility model provides a single entry pull rod expansion joint for on cryo equipment connecting tube, it includes both ends have the bellows of inscription flange respectively, both ends inscription flange on dispose three piece at least equipartitions, both ends area screwed pull rod, that the pull rod both ends connect through the screw thread soon, with the pull rod including fixed nut on the connection orchid, the pull rod both ends connect two concatenation nuts respectively soon, and these two concatenation nut branches place the inside and outside both sides of inscription flange in, wherein outside nut is for the fixation nut of fixed inscription flange, the adjusting screw nut of distance but inboard flange contracts in for adjustment inscription flange, the outside separately of inscription flange still dispose respectively through the fixed external connection flange of bolt, nut, and pass through external connection flange connects the high temperature tube way, it has simple structure, equitable, and convenient to use is reliable, can overcome because of high temperature tube way itself produces the heat expansion deformation, the compression expansion joint inwards compresses characteristics such as ripple pipe betterly.
Description
Technical field
The utility model relates to a kind of single entry pull bar expansion joint on cryogenic equipment connecting pipe, especially high
Single entry pull bar expansion joint on warm connecting pipe, belongs to cryogenic equipment connecting pipe technical field.
Background technology
Connecting pipe is imported and exported due to the decompressor in air separation plant in most of the cases to be limited by place and institute
Need compensation dosage larger, be difficult to meet design requirement by the self-compensating mode of pipeline, it has to be considered as metal bellowss swollen
It is swollen to save to increase pipeline flexible, consider from economical and practical angle, the country generally adopts single entry on cryogenic expansion machine connecting pipe
Pull rod type expansion joint.It is a kind of relatively economical that the expansion joint of this form is applied on general low-pressure low-temperature pipeline, simple to tie
Structure, but it also has the limitation of its own, i.e., can not provide nose balance.And it is current, domestic many pipe design personnel in order to
Increase the nose balance of pipeline and set up expansion joint in addition, so not only increased cost but also increased difficulty of construction.
The content of the invention
The purpose of this utility model is to overcome the shortcomings of that prior art is present, and provides a kind of simple and reasonable for structure, is made
With convenient and reliable, can preferably overcome and flatulence of heat type deformation, the inside compress bellows of compression-expansion section be produced because of high-temperature pipe itself
For the single entry pull bar expansion joint on cryogenic equipment connecting pipe.
The purpose of this utility model is by following technical solution completing, a kind of to be used for cryogenic equipment connecting pipe
Single entry pull bar expansion joint, it includes that a two ends are respectively provided with the blue corrugated tube of inscribed methods, matches somebody with somebody on described two ends inscribed methods orchid
Be equipped with least three uniform, the screwed pull bars in two ends, it is that pull bar two ends are spun by screw thread, by pull bar be fixed in connect
Nut on flange.
As preferred：Described pull bar two ends are connected with two splicing nuts respectively, and this two splicing nuts are placed in
Inside and outside inscribed methods orchid, wherein outboard nut is to fix the blue fixing nut of inscribed methods, and inner flange is adjustment inscribed methods
Orchid inside contracts the adjustable pitch nut of distance.
As preferred：The blue respective outside of described inscribed methods be also configured with respectively by bolt, nut fix it is external
Flange, and high-temperature pipe is connected by the external flange.
This utility model mainly includes a corrugated tube, four pull bars and two ends that can connect with adjacent channel, equipment
Pipe（Or flange）Deng the flexible device of composition；What single entry pull rod type expansion joint mainly absorbed is the lateral angle position in any plane
Move, the effect of its pull bar is subject to the blind flange force of corrugated tube generation, after installing, do not allow dismounting；Expansion joint itself bears
The ability of corrugated tube blind flange force；In low-temp low-pressure pipe design, pull bar outboard nut is unclamped into certain distance by calculating, is made
Its ability with certain axial displacement of the lines compensation while with lateral angle displacement compensation capability.
This utility model has simple and reasonable for structure, easy for operation, reliability, preferably can overcome because of high temperature pipe
The features such as road itself produces flatulence of heat type deformation, compression-expansion section inside compress bellows.
Description of the drawings
Fig. 1 is structural representation of the present utility model.
Specific embodiment
This utility model is described in detail below in conjunction with accompanying drawing：Shown in Fig. 1, a kind of use described in the utility model
Single entry pull bar expansion joint on cryogenic equipment connecting pipe, it includes that a two ends are respectively provided with the corrugated tube 5 of inscribed methods orchid 2,
At least three uniform, the screwed pull bars 4 in two ends are configured with described two ends inscribed methods orchid 2,4 two ends of pull bar pass through spiral shell
Stricture of vagina the spins, nut 1 pull bar 4 being fixed on inscribed methods orchid 2.
Shown in figure, described pull bar 4 has four, and described 4 two ends of pull bar are connected with two splicing nuts 1 respectively, and
This two splicing nuts 1 are placed in inside and outside inscribed methods orchid 2, wherein the nut in outside is to fix the blue fixed spiral shell of inscribed methods
Mother, the method nut of inner side are to adjust the adjustable pitch nut that inscribed methods orchid inside contracts distance.
The respective outside of inscribed methods orchid described in the utility model 2 be also configured with respectively by bolt, nut fix it is outer
Acting flange 3, and high-temperature pipe is connected by the external flange 3.
During installation, inscribed methods are blue（End plate）The inner side bolt needs being connected with pull bar are unclamped or are cancelled.And corrugated tube 5 is produced
Intrinsic pressure blind flange force be to stretch out corrugated tube, so inscribed methods are blue when installing（End plate）The outside bolt being connected with pull bar need to be twisted
Tightly, for bearing blind flange force.So the blind flange force in high-temperature pipe produced by corrugated tube is all born by expansion joint itself.
In cryogenic piping, due to pipeline itself produce shrinkage deformation stretch out expansion joint, so install when end plate with
The outside bolt of pull bar connection needs to unclamp or cancels.And the intrinsic pressure blind flange force that corrugated tube is produced is to stretch out corrugated tube, institute
The outside bolt needs that end plate is connected with pull bar during installing are tightened, for bearing blind flange force.This is there is on the outside of a contradiction
Bolt should unclamp and ensure that the flexible of normal work of corrugated tube tightens the blind flange force for bearing the intrinsic pressure generation of corrugated tube again, generally
It is a certain amount of balancing using unclamping.
Compared with used in cryogenic piping in high-temperature pipe by single entry pull rod type expansion joint, it has been found that in high-temperature pipe
The blind flange force that middle single entry pull rod type swelling red sandstone is produced can on the premise of the normal use of expansion joint is not affected all by
Expansion joint is born in itself, and the blind flange force that single entry pull rod type swelling red sandstone is produced in cryogenic piping can not affect
All born by expansion joint in itself on the premise of the normal use of expansion joint, it is necessary to partly or entirely by the equipment being connected with expansion joint
Ozzle undertakes this part blind flange force.In low pressure pipeline, this part blind flange force simultaneously less can be born by expander plant completely,
But in pressure piping, this part blind flange force is abnormal huge, bears clearly irrational by expander plant, can not only affect
The normal operation of equipment, or even the damage of equipment can be caused, so the Stress Check that pressure piping must be strict to equipment ozzle.
Claims (1)
1. a kind of single entry pull bar expansion joint on cryogenic equipment connecting pipe, it is blue that it includes that a two ends are respectively provided with inscribed methods
Corrugated tube, it is characterised in that at least three uniform, the screwed drawings in two ends are configured with described two ends inscribed methods orchid
Bar, nut that pull bar two ends are spun by screw thread, pull bar being fixed on inscribed methods orchid；
Described pull bar two ends are connected with two splicing nuts respectively, and this two splicing nuts are placed in blue inside and outside of inscribed methods
Both sides, wherein outboard nut are to fix the blue fixing nut of inscribed methods, inner flange be adjust that inscribed methods orchid inside contracts distance can
Adjusting screw nut；
The blue respective outside of described inscribed methods is also configured with the external flange fixed by bolt, nut respectively, and passes through institute
State external flange connection high-temperature pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620735340.3U CN206093344U (en) | 2016-07-13 | 2016-07-13 | A single entry pull rod expansion joint for on cryo equipment connecting tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620735340.3U CN206093344U (en) | 2016-07-13 | 2016-07-13 | A single entry pull rod expansion joint for on cryo equipment connecting tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206093344U true CN206093344U (en) | 2017-04-12 |
Family
ID=58465106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620735340.3U Active CN206093344U (en) | 2016-07-13 | 2016-07-13 | A single entry pull rod expansion joint for on cryo equipment connecting tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206093344U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108413167A (en) * | 2018-05-15 | 2018-08-17 | 广东世创金属科技股份有限公司 | For the tank connected rectangular expansion joint of Muffle |
-
2016
- 2016-07-13 CN CN201620735340.3U patent/CN206093344U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108413167A (en) * | 2018-05-15 | 2018-08-17 | 广东世创金属科技股份有限公司 | For the tank connected rectangular expansion joint of Muffle |
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