CN202327490U - Special expansion piece for plastic pipe system - Google Patents
Special expansion piece for plastic pipe system Download PDFInfo
- Publication number
- CN202327490U CN202327490U CN2011204662262U CN201120466226U CN202327490U CN 202327490 U CN202327490 U CN 202327490U CN 2011204662262 U CN2011204662262 U CN 2011204662262U CN 201120466226 U CN201120466226 U CN 201120466226U CN 202327490 U CN202327490 U CN 202327490U
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- China
- Prior art keywords
- sleeve
- plastic pipe
- flange
- plastic
- special
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- Expired - Fee Related
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Abstract
The utility model discloses a special expansion piece for a plastic pipe system, wherein one end of a plastic pipe is used as a fixed end and the other end thereof is used as an expansion end. The special expansion piece is characterized by comprising a sleeve, and two ends of the sleeve are respectively in a fixed connection with a front flange and a rear flange; the fixed end of the plastic pipe is connected with the front flange of the sleeve via a matching flange, and the expansion end of the other plastic pipe is inserted into the sleeve from the rear flange; and the plastic pipe at the expansion end and the sleeve are axially in inserted connection in a freely sliding manner with axial seal and end face seal. According to the utility model, enough expansion space is reserved at the connection part of the pipes, thus, enough allowance can protect the plastic pipe system from being damaged when the pipe shrinks or expands, and the connection part is in axial seal and end face seal so as to prevent leakage. The special expansion piece is scientifically designed and simple in structure, and solves the problem of damage to the plastic pipe system caused by tensile deformation and thermal expansion and cold contraction better.
Description
Technical field
The utility model relates to laying of pipe-line system and is connected, particularly a kind of special-purpose expansion bend that is used for the plastic duct system connection.
Background technique
Plastic pipe is widely used in the branch road of water supply and sewerage pipeline system; Be connected through reducing socket with main pipe, because plastic pipe self thermal expansion coefficient is bigger, pipeline junction is fixed hard connection; Causing plastic pipe to expand during heat expansion decreases; The pipeline retraction causes the socket joint connection to come off during shrinkage, causes the pipe network heavy damage, influences water supply security; Pipeline for using non-excavation to lay is particularly outstanding; Because non-excavation lays and need draw plastic pipe, make plastic pipe tensile buckling, lay completion after; Plastic pipe has a process that bounces back naturally; Under the retraction or the effect of shrinkage naturally, when retracting force and retraction displacement reach a certain amount of, will cause socket joint to connect and come off.
In order to prevent plastic pipe tensile buckling or to expand with heat and contract with cold pipeline is damaged, in the laid processes of plastic duct system, adopting snake laying usually or adding a shape compensation increases distortion allowance, and the joint is fixed hard connection.Snake laying can solve the short distance plastic pipe and lay the little problem of extending amount variation; But lay for long distance; Its shortcoming is mainly: snakelike compensation is owing to limited by raceway groove and caliber, and its compensation rate is less, is not enough to compensate the contour projector of pipeline; Bigger pulling force is caused in the fixed connection place, can cause the excessive generation plastic deformation of stress finally to form the joint in the fixed connection place later for a long time and break.Door shape compensation is except that receiving the restriction of raceway groove and caliber, and its Economy is also restricting and can not in actual large diameter pipeline system, use.
The model utility content
The purpose of the utility model is to provide a kind of special-purpose expansion bend of plastic duct system that satisfies the plastic pipe flexible compensation, can fundamentally thoroughly solve because of tensile buckling or the problem of expanding with heat and contract with cold and causing plastic duct system to wreck.
The purpose of the utility model is achieved through following technological scheme, the special-purpose expansion bend of plastic duct system, and an end of said plastic pipe is as fixed end; The other end is as flexible end; It is characterized in that comprise a sleeve, an end of said sleeve is connected with the fixed end of plastic pipe; The flexible end of another root plastic pipe inserts the other end of said sleeve, axially grafting of free skating dynamic formula and axial seal between the plastic pipe of flexible end and the sleeve.
The further technological scheme of the utility model is; The two ends of said sleeve are fixedly connected a preposition flange and a rearmounted flange respectively; The fixed end of said plastic pipe cooperates flange to be connected with the preposition flange of sleeve through one; The flexible end of said another root plastic pipe inserts in the sleeve from rearmounted flange end, the axially grafting of free skating dynamic formula and axial seal and end face seal between the plastic pipe of said flexible end and the sleeve.
The utility model technological scheme further is; The sleeve lining of nearly rearmounted flange end is circumferentially with annular retaining ring; The plastic pipe of flexible end passes this annular retaining ring, and the said annular retaining ring outside is provided with Sealing, and the outside of said Sealing is provided with and compresses end cap; The said end cap that compresses is connected with rearmounted secure, and the plastic pipe that forms flexible end is free to slide in sleeve and axial seal and end face seal.
Said flexible end plastic pipe inserts 1/3～2/3 place in the sleeve.
Described preposition flange with cooperate between the flange, rearmounted flange with compress that the employing bolton is connected between the end cap.
Said sleeve is a metal sleeve, and weld with preposition flange, rearmounted flange respectively at the two ends of sleeve.
The utility model is reserved enough extendable rooms through the pipeline connection part; When the pipeline contraction or expansion, having the compensation of enough surplus to guarantee in the plastic duct system that socket joint connects can not come off and plastic pipe itself can not be destroyed yet; The joint adopts axial seal and end face seal not to leak with assurance; The utility model design science, simple in structure has solved because of tensile buckling or the problem of expanding with heat and contract with cold and causing plastic duct system to wreck well.
Description of drawings
Fig. 1 is the utility model embodiment's a structural representation;
Fig. 2 is used for the assembling schematic representation of plastic duct system for the utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is done further explain.
In conjunction with Fig. 1, shown in Figure 2; The utility model comprises a metal sleeve 1, and the two ends of metal sleeve 1 are welded a preposition flange 2 and a rearmounted flange 3 respectively, and the fixed end of plastic pipe 8 cooperates flange 7 to be connected with preposition flange 2 through one; The flexible end of another root plastic pipe 9 inserts in the metal sleeve 1 from rearmounted flange 3 ends; Insert in the metal sleeve 1 flexible end plastic pipe and account for 1/3～2/3 of length sleeve and be advisable, be circumferentially with annular retaining ring 4 near metal sleeve 1 inwall of rearmounted flange 3 ends, the plastic pipe of flexible end passes annular retaining ring 4; The outside of annular retaining ring 4 is provided with Sealing 5; The outside of Sealing 5 is provided with and compresses end cap 6, compresses end cap 6 and is fastenedly connected with rearmounted flange 3, Sealing 5 and the sealing that compresses end cap 6 assurance plastic pipes; The plastic pipe that forms flexible end both can be free to slide in metal sleeve 1, had realized that again axial seal and end face seal can not leak.Preposition flange 2 with cooperate between the flange 7, rearmounted flange 3 with compress that the employing bolton is connected between the end cap 6.
Installation method: earlier with preposition flange 2 ends of metal sleeve 1 being connected through a fixed end that cooperates flange 7 and a plastic pipe; The flexible end cover of another root plastic pipe is inserted through the back-up ring of metal sleeve 1 inwall by rearmounted flange 3 ends of metal sleeve 1; The plastic pipe of flexible end can be free to slide in metal sleeve 1 vertically, Sealing 5 be compressed with being fastenedly connected of rearmounted flange 3 through compressing end cap 6 then, form axial seal and end face seal acting in conjunction; Guarantee that the press water in the pipeline does not leak; The completion expansion bend is connected with pipe-line system, and the utility model compact structure is easy for installation; There are enough surpluses to guarantee that pipe-line system is not destroyed during the pipeline contraction or expansion, solved because of tensile buckling well or the problem of expanding with heat and contract with cold and causing plastic duct system to wreck.
The foregoing description is only as the preferred embodiments of the utility model; To specify the technical conceive and the essential implementation of the utility model; Be not that protection domain to the utility model limits; All any simple modification and equivalent structure transformation or modifications of being done according to the utility model spirit all should be encompassed within the protection domain of the utility model.
Claims (6)
1. the special-purpose expansion bend of plastic duct system; One end of said plastic pipe is as fixed end; The other end is as flexible end, and it is characterized in that: comprise a sleeve, an end of said sleeve is connected with the fixed end of plastic pipe; The flexible end of another root plastic pipe inserts the other end of said sleeve, the axially grafting of free skating dynamic formula and axial seal and end face seal between the plastic pipe of flexible end and the sleeve.
2. the special-purpose expansion bend of plastic duct system according to claim 1; It is characterized in that: the two ends of said sleeve are fixedly connected a preposition flange and a rearmounted flange respectively; The fixed end of said plastic pipe cooperates flange to be connected with the preposition flange of sleeve through one; The flexible end of said another root plastic pipe inserts in the sleeve from rearmounted flange end, the axially grafting of free skating dynamic formula and axial seal and end face seal between the plastic pipe of said flexible end and the sleeve.
3. the special-purpose expansion bend of plastic duct system according to claim 2; It is characterized in that: the sleeve lining of nearly rearmounted flange end is circumferentially with annular retaining ring; The plastic pipe of flexible end passes this annular retaining ring, and the said annular retaining ring outside is provided with Sealing, and the outside of said Sealing is provided with and compresses end cap; The said end cap that compresses is connected with rearmounted secure, and the plastic pipe that forms flexible end is free to slide in sleeve and axial seal and end face seal.
4. according to claim 1, the special-purpose expansion bend of 2 or 3 described plastic duct systems, it is characterized in that: said flexible end plastic pipe inserts 1/3～2/3 place in the sleeve.
5. the special-purpose expansion bend of plastic duct system according to claim 3 is characterized in that: preposition flange with cooperate between the flange, rearmounted flange with compress that the employing bolton is connected between the end cap.
6. the special-purpose expansion bend of plastic duct system according to claim 3, it is characterized in that: said sleeve is a metal sleeve, weld with preposition flange, rearmounted flange respectively at the two ends of sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204662262U CN202327490U (en) | 2011-11-22 | 2011-11-22 | Special expansion piece for plastic pipe system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204662262U CN202327490U (en) | 2011-11-22 | 2011-11-22 | Special expansion piece for plastic pipe system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202327490U true CN202327490U (en) | 2012-07-11 |
Family
ID=46439470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204662262U Expired - Fee Related CN202327490U (en) | 2011-11-22 | 2011-11-22 | Special expansion piece for plastic pipe system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202327490U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102384329A (en) * | 2011-11-22 | 2012-03-21 | 黄有勇 | Dedicated expansion joint for plastic pipeline system |
| CN106369239A (en) * | 2016-10-11 | 2017-02-01 | 鞍钢集团矿业有限公司 | High polymer material composite pipeline high-pressure-resistant telescopic pipe joint and connecting method thereof |
-
2011
- 2011-11-22 CN CN2011204662262U patent/CN202327490U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102384329A (en) * | 2011-11-22 | 2012-03-21 | 黄有勇 | Dedicated expansion joint for plastic pipeline system |
| CN106369239A (en) * | 2016-10-11 | 2017-02-01 | 鞍钢集团矿业有限公司 | High polymer material composite pipeline high-pressure-resistant telescopic pipe joint and connecting method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120711 Termination date: 20131122 |