CN206988667U - A kind of bellows expansion joint - Google Patents
A kind of bellows expansion joint Download PDFInfo
- Publication number
- CN206988667U CN206988667U CN201720686906.2U CN201720686906U CN206988667U CN 206988667 U CN206988667 U CN 206988667U CN 201720686906 U CN201720686906 U CN 201720686906U CN 206988667 U CN206988667 U CN 206988667U
- Authority
- CN
- China
- Prior art keywords
- bellows
- expansion joint
- containment vessel
- bell
- utility
- 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.)
- Expired - Fee Related
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- Joints Allowing Movement (AREA)
- Thermal Insulation (AREA)
Abstract
The utility model provides a kind of bellows expansion joint, including bellows, bell tap and containment vessel；The bell tap is two, and two bell taps are separately positioned on the bellows both ends, with the bellows fixed seal connection；The periphery of the bellows is provided with the containment vessel, and the containment vessel includes cylindrical tube, and the cylindrical tube is provided at both ends with circular cambered surface end socket, and the circular cambered surface end socket is slidingly sealed with described two bell taps to be connected.This programme can avoid expansion joint from being subject to crushing.
Description
Technical field
It the utility model is related to expansion joint technical field, more particularly to a kind of bellows expansion joint.
Background technology
Industrial pipe network determines trend generally according to technological process and device location, crisscross pipe network, in operation because
Built-in medium temperature and pressure change produce corresponding deformation of expanding with heat and contract with cold, the main forms of pipe deforming be axial force and
Displacement.In order to eliminate the destructiveness of axial force and displacement to pipe network to greatest extent in engineering, configured on pipe network some nodes
Necessary expansion joint.Expansion joint is a kind of universal pipes safety device, and it absorbs by the elasticity of bellows or compensate pipeline
Deformation.The bellows wave mode of prior art mainly has U-shaped, S types and Ω types, and the bellows of these wave modes all has elasticity very well,
Predictive role can be realized in supporting expansion joint.
In urbanization layout, the use of underground piping is very extensive.Because expansion joint main body is made up of bellows, bellows
Compressive property it is poor, the expansion joint being embedded under face deeper crushes easily.
Utility model content
In view of this, the technical problems to be solved in the utility model is to provide a kind of bellows expansion joint, can avoid swollen
Swollen section is subject to crushing.
What the technical solution of the utility model was realized in：
A kind of bellows expansion joint, including bellows, bell tap and containment vessel；
The bell tap is two, and two bell taps are separately positioned on the bellows both ends, with the bellows
Fixed seal connection；
The periphery of the bellows is provided with the containment vessel, and the containment vessel includes cylindrical tube, the cylinder
Cylinder is provided at both ends with circular cambered surface end socket, and the circular cambered surface end socket is slidingly sealed company with described two bell taps
Connect.
Preferably, the outer layer of the bellows is provided with thermal contraction coating.
Preferably, in addition to the heat insulating stuffing that is arranged between the bellows and the containment vessel.
Preferably, the heat insulating stuffing is polyurathamc.
Preferably, it is provided with range sensor on the bell tap.
The utility model proposes bellows expansion joint, bellows are provided with containment vessel, so as to be set when expansion joint
At underground, containment vessel can protect bellows, prevent soil weight from causing the damage of bellows, so as to avoid expansion joint
It is subject to crushing.
Brief description of the drawings
Fig. 1 is the cross sectional view for the bellows expansion joint that the utility model embodiment proposes.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belong to the scope of the utility model protection.
As shown in figure 1, the utility model embodiment proposes a kind of bellows expansion joint, including bellows 1, bell tap
2 and containment vessel 3；
Bell tap 2 is two, and two bell taps 2 are separately positioned on the both ends of bellows 1, with the fixing seal of bellows 1
Connection；
The periphery of bellows 1 is provided with containment vessel 3, and containment vessel includes cylindrical tube 301, the both ends of cylindrical tube 301
Circular cambered surface end socket 302 is provided with, circular cambered surface end socket 302 is slidingly sealed with two bell taps 2 and is connected.
It can be seen that the bellows expansion joint that the utility model embodiment proposes, bellows are provided with containment vessel, so as to work as
When expansion joint is arranged on underground, containment vessel can protect bellows, prevent soil weight from causing the damage of bellows, so as to
Expansion joint is avoided to be subject to crushing.
In a preferred embodiment of the present utility model, the outer layer of bellows 1 is provided with thermal contraction coating.
Thermal contraction coating is arranged on the periphery of bellows 1, can effectively prevent the corrosion of bellows 1.
In a preferred embodiment of the present utility model, bellows expansion joint also includes being arranged on bellows and containment vessel
Between heat insulating stuffing.
Bellows expansion joint can possibly be provided at cold area, and temperature is too low to cause bellows to be damaged by frost, and influence ripple
The normal use of pipe expansion joint；By the heat insulating stuffing between bellows and containment vessel, bellows can be incubated,
Wherein, heat insulating stuffing can be polyurathamc.
Polyurathamc full name sealing agent of single component polyurethane foam, foaming agent, foamed glue, PU gap fillers are commonly called as, English
PU FOAM, it is that aerosol technology and polyurethane foam technology intersect the product combined.It is a kind of by polyurethane prepolymer, foaming
The components such as agent, catalyst are loaded on the special polyurethane products in pressure-resistant inhalator jar.When material sprays from inhalator jar, foam shape
Polyurethane materials can expand rapidly and with air or the matrix touched moisture occur curing reaction formed foam, be applicable
Scope is wide.Have the advantages that preceding foaming, highly expanded, contraction are small, and the intensity of foam is good, the foam tool after bonding force high solidification
There is the multi-effect such as joint filling, bonding, sealing, heat-insulated, sound-absorbing, be a kind of environmental protection and energy saving, construction material easy to use.
In a preferred embodiment of the present utility model, range sensor is provided with bell tap.
Specifically, range sensor is disposed therein on a bell tap, for sensing between two bell taps
Distance.
The radius of bell tap is more than the radius of bellows, and distance-sensor is arranged on into the outer part of bell tap,
So as to not stopped the distance of two bell taps of sensing by bellows.
When the distance of stretch out and draw back of bellows is more than a quarter of drift, the service life of bellows can drastically decline,
The distance between two bell taps are measured by distance-sensor, the distance of stretch out and draw back of bellows can be effectively obtained, compare and stretch
Contracting distance and the drift of bellows, bellows can be learnt whether in excessively flexible state, so as to facilitate work
Make the service life that personnel judge bellows., can be with when staff has found expansion joint for a long time in excessively flexible state
By changing the modes such as suitable expansion joint, bellows expansion joint is set to be more suitable for the requirement of pipeline construction.
It can be seen that the bellows expansion joint that the utility model embodiment proposes, containment vessel is set by the periphery in bellows,
Containment vessel is rigid material, so that when expansion joint is arranged on underground, bellows is protected, due to containment vessel and bell tap
Connection is slidingly sealed, so as to adapt to the flexible of expansion joint, if expansion joint conveying medium is gas, when expansion joint is let out
During dew, containment vessel can also avoid revealing.
In summary, the utility model embodiment can at least realize following effect：
In the utility model embodiment, bellows are provided with containment vessel, so that when expansion joint is arranged on underground,
Containment vessel can protect bellows, prevent soil weight from causing the damage of bellows, so as to avoid expansion joint from being subject to crushing.
In the utility model embodiment, the outer layer of bellows is provided with thermal contraction coating, can effectively prevent ripple
The corrosion of pipe.
In the utility model embodiment, bellows expansion joint also includes the insulation being arranged between bellows and containment vessel
Inserts, bellows can be prevented to be damaged by frost.
In the utility model embodiment, range sensor is provided with bell tap, so as to so that bellows expansion
Section is more suitable for the requirement of pipeline construction.
It is last it should be noted that：Preferred embodiment of the present utility model is the foregoing is only, is merely to illustrate this practicality
New technical scheme, is not intended to limit the scope of protection of the utility model.It is all the spirit and principles of the utility model it
Interior done any modification, equivalent substitution and improvements etc., are all contained in the scope of protection of the utility model.
Claims (5)
1. a kind of bellows expansion joint, it is characterised in that including bellows, bell tap and containment vessel；
The bell tap is two, and two bell taps are separately positioned on the bellows both ends, are fixed with the bellows
It is tightly connected；
The periphery of the bellows is provided with the containment vessel, and the containment vessel includes cylindrical tube, the cylindrical tube
Circular cambered surface end socket is provided at both ends with, the circular cambered surface end socket is slidingly sealed with described two bell taps to be connected.
2. bellows expansion joint as claimed in claim 1, it is characterised in that the outer layer of the bellows is provided with thermal contraction painting
Layer.
3. bellows expansion joint as claimed in claim 1, it is characterised in that also include being arranged on the bellows and the guarantor
Heat insulating stuffing between protective case.
4. bellows expansion joint as claimed in claim 3, it is characterised in that the heat insulating stuffing is polyurathamc.
5. bellows expansion joint as claimed in claim 1, it is characterised in that be provided with Distance-sensing on the bell tap
Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720686906.2U CN206988667U (en) | 2017-06-13 | 2017-06-13 | A kind of bellows expansion joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720686906.2U CN206988667U (en) | 2017-06-13 | 2017-06-13 | A kind of bellows expansion joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206988667U true CN206988667U (en) | 2018-02-09 |
Family
ID=61396607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720686906.2U Expired - Fee Related CN206988667U (en) | 2017-06-13 | 2017-06-13 | A kind of bellows expansion joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206988667U (en) |
-
2017
- 2017-06-13 CN CN201720686906.2U patent/CN206988667U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180209 Termination date: 20210613 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |