CN210344670U

CN210344670U - Non-metal fabric type expansion joint

Info

Publication number: CN210344670U
Application number: CN201921260809.2U
Authority: CN
Inventors: 李敏
Original assignee: Chongqing Minte Metal Products Co Ltd
Current assignee: Chongqing Minte Metal Products Co Ltd
Priority date: 2019-08-06
Filing date: 2019-08-06
Publication date: 2020-04-17
Anticipated expiration: 2029-08-06

Abstract

The utility model discloses a non-woven fabrics type expansion joint, including two takeovers, two same flexible pipe box has been cup jointed between the takeover, two the fixed ring piece has all been welded to the takeover lateral wall, and has the pull rod that the equidistance distributes between two fixed ring pieces through the thread tightening, flexible pipe box both ends position department all overlaps and is equipped with the becket, and two becket lateral walls all weld have the becket piece, two fixed ring piece lateral wall spiro union has the equidistance to be the fixing bolt that the annular distributes, two the becket piece is fixed through fixing bolt and two fixed ring piece lateral walls respectively, and two takeovers are kept away from flexible pipe box one end and all have been welded the flange ring. The utility model discloses promote the anticorrosive effect of expansion joint, the axial vibrations of absorption expansion joint that simultaneously can be better promote the life of expansion joint, convenient better maintenance, easy operation reduces and assembles the degree of difficulty, and the TPU anti-deformation layer that the cooperation set up simultaneously promotes the anti deformability of expansion joint.

Description

Non-metal fabric type expansion joint

Technical Field

The utility model relates to an expansion joint technical field especially relates to a non-woven fabric type expansion joint.

Background

An expansion joint refers to a flexible element that effectively functions to compensate for axial deformation. For example, the expansion joint welded on the shell of the fixed tube-plate heat exchanger has large axial flexibility and easy deformation, can compensate the thermal expansion difference generated by the tube and the shell due to different wall temperatures, and reduces the axial load of the tube and the shell, thereby reducing the temperature difference stress of the tube, the tube plate and the shell and avoiding causing strength damage, instability damage and tube pull-out damage. The expansion joint has many kinds, and the common structures include wave, ring plate welding, clamping shell type and the like, wherein the wave expansion joint is most widely applied, and the ring plate welding expansion joint is only suitable for normal pressure or low pressure occasions. The non-metal fabric type expansion joint belongs to one kind of expansion joint, and is used in pipeline for conveying corrosive material.

The existing nonmetal fabric type expansion joint is inconvenient to disassemble, assemble and maintain, and has general deformation resistance, so that the nonmetal fabric type expansion joint is provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a non-metal fabric type expansion joint.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a non-metal fabric type expansion joint, includes two takeovers, two same flexible pipe box has been cup jointed between the takeover, two the fixed ring piece has all been welded to the takeover lateral wall, and has the pull rod that the equidistance distributes between two fixed ring pieces through the threaded fixation, flexible pipe box both ends position department all overlaps and is equipped with the metal covering, and just two metal covering lateral walls all weld the metal ring piece, two fixed ring piece lateral wall spiro union has the equidistance to be the fixing bolt that the annular distributes, two the metal ring piece is fixed through fixing bolt and two fixed ring piece lateral walls respectively, and two takeovers are kept away from flexible pipe box one end and all have welded the flange ring.

Preferably, one end of the metal sleeve is provided with a necking structure, and the inner wall of the metal sleeve is provided with a rubber layer.

Preferably, the flexible pipe sleeve comprises an anticorrosive layer, and the outer side of the anticorrosive layer is provided with a TPU anti-deformation layer.

Preferably, a Teflon mesh layer is arranged on the outer side of the TPU deformation-resistant layer, and the thickness of the Teflon mesh layer is 1-2 mm.

Preferably, the outer side of the Teflon mesh fabric layer is provided with a flame-retardant rubber layer.

Preferably, one side of each of the two connecting pipes, which is close to the flexible pipe sleeve, is of a conical surface structure, and the taper of the conical surface is matched with that of the metal sleeve.

The utility model has the advantages that:

through the flexible pipe box that sets up, promote the anticorrosive effect of expansion joint, the axial vibrations of absorption expansion joint that simultaneously can be better promote the life of expansion joint, and the metal covering and the metal ring piece that the cooperation set up make things convenient for better maintenance, easy operation reduces and assembles the degree of difficulty, and the TPU anti-deformation layer that the cooperation set up simultaneously promotes the anti deformability of expansion joint.

Drawings

Fig. 1 is a schematic view of a partial cross-sectional structure of a non-metal fabric type expansion joint according to the present invention;

FIG. 2 is a partially enlarged schematic view of FIG. 1;

fig. 3 is a schematic sectional view of the metal sheath of the non-metal fabric type expansion joint of the present invention.

In the figure: 1 flange ring, 2 takeover, 3 fixed ring pieces, 4 pull rods, 5 metal sleeves, 6 fixing bolts, 7 metal ring pieces, 8 flame-retardant rubber layers, 9 TPU deformation-resistant layers, 10 Teflon mesh fabric layers and 11 anticorrosive layers.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-3, a non-metal fabric type expansion joint comprises two connecting pipes 2, wherein the same flexible pipe sleeve is sleeved between the two connecting pipes 2, fixing ring pieces 3 are welded on the side walls of the two connecting pipes 2, pull rods 4 which are distributed equidistantly are fixed between the two fixing ring pieces 3 through threads, metal sleeves 5 are sleeved at the positions of two ends of the flexible pipe sleeve, metal ring pieces 7 are welded on the side walls of the two metal sleeves 5, fixing bolts 6 which are distributed equidistantly in an annular mode are screwed on the side walls of the two fixing ring pieces 3, the two metal ring pieces 7 are fixed with the side walls of the two fixing ring pieces 3 through the fixing bolts 6 respectively, and flange rings 1 are welded at the ends, far away from the flexible pipe sleeve, of the two connecting pipes.

The utility model discloses in, 5 one ends of metal covering are equipped with the throat structure, and 5 inner walls of metal covering are equipped with the rubber layer, and flexible pipe box includes anticorrosive coating 11, and the anticorrosive coating 11 outside is equipped with TPU anti-deformation layer 9, the TPU anti-deformation layer 9 outside is equipped with special fluorine dragon screen cloth layer 10, and the thickness on special fluorine dragon screen cloth layer 10 is 1-2 mm, the special fluorine dragon screen cloth layer 10 outside is equipped with fire-retardant rubber layer 8, two takeoffs 2 are close to flexible pipe box one side and are the conical surface structure, and the tapering and the 5 looks adaptations of metal covering of conical surface.

The working principle is as follows: during the use, through two flange rings 1, with expansion joint fixed mounting correspond the pipeline in, the anticorrosive effect of expansion joint is promoted to flexible pipe box, the axial vibrations of absorption expansion joint that simultaneously can be better promote the life of expansion joint, and the metal covering 5 and the metal ring piece 7 that the cooperation set up make things convenient for the dismouting, make things convenient for better maintenance, easy operation reduces the degree of difficulty of assembling, and the TPU anti-deformation layer 10 that the cooperation set up simultaneously promotes the anti deformability of expansion joint. The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a non-woven fabric type expansion joint, includes two takeover (2), its characterized in that, two same flexible pipe box has been cup jointed between takeover (2), two fixed ring piece (3) have all been welded to takeover (2) lateral wall, and have pull rod (4) that the equidistance distributes between two fixed ring pieces (3) through the threaded fixation, flexible pipe box both ends position department all overlaps and is equipped with metal covering (5), and two metal covering (5) lateral wall all welds have metal ring piece (7), two fixed ring piece (3) lateral wall spiro union has fixing bolt (6) that the equidistance is the annular and distributes, two metal ring piece (7) are fixed through fixing bolt (6) and two fixed ring piece (3) lateral walls respectively, and two takeover (2) are kept away from flexible pipe box one end and all welds flange ring (1).

2. A non-metallic fabric type expansion joint according to claim 1, wherein one end of the metal sleeve (5) is provided with a necking structure, and the inner wall of the metal sleeve (5) is provided with a rubber layer.

3. A non-metallic fabric type expansion joint according to claim 2, characterized in that the flexible pipe sleeve comprises a corrosion protection layer (11), and the corrosion protection layer (11) is provided with a TPU deformation-resistant layer (9) on the outside.

4. A non-metallic fabric type expansion joint according to claim 3, wherein a teflon gauze layer (10) is arranged outside the TPU anti-deformation layer (9), and the thickness of the teflon gauze layer (10) is 1-2 mm.

5. A non-metallic fabric type expansion joint according to claim 4, wherein a flame-retardant rubber layer (8) is provided outside the Teflon mesh layer (10).

6. A non-metallic fabric type expansion joint according to claim 1, characterized in that both sides of the two connecting pipes (2) close to the flexible pipe sleeve are of a conical surface structure, and the conical degree of the conical surface is matched with the metal sleeve (5).