CN213871659U - Square flange corrugated pipe expansion joint - Google Patents
Square flange corrugated pipe expansion joint Download PDFInfo
- Publication number
- CN213871659U CN213871659U CN202022224040.8U CN202022224040U CN213871659U CN 213871659 U CN213871659 U CN 213871659U CN 202022224040 U CN202022224040 U CN 202022224040U CN 213871659 U CN213871659 U CN 213871659U
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- China
- Prior art keywords
- square flange
- takeover
- square
- bellows
- expansion joint
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Abstract
The utility model relates to a square flange bellows expansion joint, including left takeover, bellows, right takeover and honeycomb duct, the bellows both ends respectively with left takeover and right takeover welded fastening, the honeycomb duct is established in the bellows, the honeycomb duct left end and left takeover inner wall welded fastening, the honeycomb duct right-hand member is the free end and stretches into in the right takeover, left takeover and right takeover surface are equipped with a pair of square flange relatively; the square flange is in a square structure, the center of the square flange is provided with a connecting pipe mounting hole, four screw mounting holes are uniformly distributed in four corners of the square flange, and the two square flanges are connected through a screw and a nut washer assembly. The utility model discloses set up the elasticity spacer between the inner wall is taken over to honeycomb duct free end and right side, can effectively in the separation buggy particle gets into the intermediate layer of bellows and honeycomb duct, the protection bellows, and reducing wear improves the reliability of expansion joint. The expansion joint adopts a pair of square flanges, so that the installation and maintenance are convenient, and the strength is high; the service life of the product can be prolonged, and the maintenance cost is reduced.
Description
Technical Field
The utility model belongs to the technical field of pipeline expansion joint technique and specifically relates to a square flange bellows expansion joint.
Background
Pipe expansion joints are also known as compensators or expansion joints. The expansion joint is generally composed of a corrugated pipe, an end pipe, a flange, a flow guide pipe and other members. The expansion joint is a compensating element of the pipeline, and mainly utilizes the expansion deformation of the corrugated pipe to absorb the dimensional change of the pipeline, the conduit, the container and the like caused by expansion and contraction due to heat, or compensate the axial, transverse or angular displacement of the pipeline, the conduit, the container and the like.
The expansion joint that is used for power plant, cement plant flue-gas wind or buggy pipeline now, the expansion joint can make bellows wearing and tearing aggravation in the long-term use in having the buggy particle to enter into the intermediate layer of bellows and honeycomb duct in the use, and the expansion joint uses three to five years and will takes place the leakage phenomenon to must change the expansion joint, lead to life shorter, the work load of maintaining and changing is big, and the cost is higher.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a square flange bellows expansion joint that is difficult for leaking, the reliability is high, long service life to the not enough of above current pipeline expansion joint.
The purpose of the utility model is realized by adopting the following technical scheme:
a square flange corrugated pipe expansion joint comprises a left connecting pipe, a corrugated pipe, a right connecting pipe and a flow guide pipe, wherein two ends of the corrugated pipe are respectively welded and fixed with the left connecting pipe and the right connecting pipe; the square flange is in a square structure, the center of the square flange is provided with a connecting pipe mounting hole, four screw mounting holes are uniformly distributed at four corner positions of the square flange, and the two square flanges are connected through a screw and nut washer assembly.
As the preferred technical scheme of the utility model, the both sides of every screw rod mounting hole of square flange respectively are equipped with a pair of deep floor.
As the preferred technical scheme of the utility model, four locating holes are evenly distributed around the square flange connecting pipe mounting hole.
As the preferable technical proposal of the utility model, four corners of the square flange are set to be chamfer angles of 45 degrees.
As the utility model discloses an optimized technical scheme, be equipped with the elasticity spacer between the inner wall of the free end of honeycomb duct and right side takeover.
As the utility model discloses a preferred technical scheme, nut and washer subassembly is including the sphere packing ring, the conical surface packing ring, thin nut and the lock nut that connect gradually.
The utility model has the advantages that: compared with the prior art, the utility model discloses set up the elasticity spacer between the inner wall of taking over on the free end of honeycomb duct and the right side, can effectively the separation buggy particle get into in the intermediate layer of bellows and honeycomb duct to the protection bellows, reducing wear improves the reliability of whole expansion joint. Meanwhile, the expansion joint adopts a pair of square flanges, so that the installation and maintenance are convenient, and the strength is high; the service life of the product can be prolonged, and the maintenance cost of the expansion joint is reduced.
Drawings
The invention will be further described with reference to the following detailed description of the embodiments with reference to the accompanying drawings:
fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural diagram of the square flange of the present invention.
1. The left connecting pipe, 2, a rib plate, 3, a square flange, 4, a corrugated pipe, 5, a flow guide pipe, 6, a screw, 7, a nut and washer assembly, 8, a right connecting pipe, 9, a spacer, 31, a screw mounting hole, 32, a positioning hole, 33 and a connecting pipe mounting hole.
Detailed Description
As shown in fig. 1 and 2, a square flange bellows expansion joint comprises a left connecting pipe 1, a bellows 4, a right connecting pipe 8 and a flow guide pipe 5, wherein two ends of the bellows 4 are respectively welded and fixed with the left connecting pipe 1 and the right connecting pipe 8, the flow guide pipe 5 is arranged in the bellows 4, the left end of the flow guide pipe 5 is welded and fixed with the inner wall of the left connecting pipe 1, the right end of the flow guide pipe 5 is a free end and extends into the inner cavity of the right connecting pipe 8, and a pair of square flanges 3 are oppositely arranged on the outer surfaces of the left connecting pipe 1 and the right connecting pipe 8; the square flange 3 is of a square structure, the center of the square flange is provided with a connecting pipe mounting hole 33, four screw mounting holes 31 are uniformly distributed at four corner positions of the square flange 3, and the two square flanges 3 are connected through a screw 6 and a nut and washer assembly 7.
In this embodiment, a pair of reinforcing rib plates 2 is respectively arranged on two sides of each screw mounting hole 31 of the square flange 3. Four positioning holes 32 are uniformly distributed around the square flange connecting pipe mounting hole 33; four corners of the square flange are set to be 45-degree chamfers. An elastic spacer 9 is arranged between the free end of the draft tube 5 and the inner wall of the right connecting tube 8. The nut washer component 7 comprises a spherical washer, a conical washer, a thin nut and a locking nut which are connected in sequence.
The above embodiments are only for illustrating the conception and technical features of the present invention, and the purpose thereof is to make the technical personnel skilled in the art understand the technical solution and implementation mode of the present invention, and thus the protection scope of the present invention can not be limited thereby. All equivalent substitutions or equivalent changes made according to the technical scheme of the utility model are covered in the protection scope of the utility model.
Claims (6)
1. The utility model provides a square flange bellows expansion joint, includes left takeover, bellows, right takeover and honeycomb duct, the both ends of bellows respectively with left takeover and right takeover welded fastening, the honeycomb duct is established in the bellows, the left end of honeycomb duct and the inner wall welded fastening of left takeover, the right-hand member of honeycomb duct is the free end and stretches into in the inner chamber of right takeover, characterized by: a pair of square flanges are oppositely arranged on the outer surfaces of the left connecting pipe and the right connecting pipe;
the square flange is in a square structure, the center of the square flange is provided with a connecting pipe mounting hole, four screw mounting holes are uniformly distributed at four corner positions of the square flange, and the two square flanges are connected through a screw and nut washer assembly.
2. The square flange bellows expansion joint of claim 1, wherein: two sides of each screw mounting hole of the square flange are respectively provided with a pair of reinforcing rib plates.
3. The square flange bellows expansion joint of claim 1, wherein: four positioning holes are uniformly distributed on the periphery of the square flange connecting pipe mounting hole.
4. The square flange bellows expansion joint of claim 1, wherein: four corners of the square flange are set to be chamfer angles of 45 degrees.
5. The square flange bellows expansion joint of claim 1, wherein: an elastic spacer is arranged between the free end of the flow guide pipe and the inner wall of the right connecting pipe.
6. The square flange bellows expansion joint of claim 1, wherein: the nut washer component comprises a spherical washer, a conical washer, a thin nut and a locking nut which are connected in sequence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022224040.8U CN213871659U (en) | 2020-09-30 | 2020-09-30 | Square flange corrugated pipe expansion joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022224040.8U CN213871659U (en) | 2020-09-30 | 2020-09-30 | Square flange corrugated pipe expansion joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213871659U true CN213871659U (en) | 2021-08-03 |
Family
ID=77070668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022224040.8U Expired - Fee Related CN213871659U (en) | 2020-09-30 | 2020-09-30 | Square flange corrugated pipe expansion joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213871659U (en) |
-
2020
- 2020-09-30 CN CN202022224040.8U patent/CN213871659U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210803 |