CN210424136U

CN210424136U - High-temperature metal expansion joint

Info

Publication number: CN210424136U
Application number: CN201920878807.3U
Authority: CN
Inventors: 张真飞
Original assignee: Jiangsu Tongyi Power Equipment Co ltd
Current assignee: Jiangsu Tongyi Power Equipment Co ltd
Priority date: 2019-06-12
Filing date: 2019-06-12
Publication date: 2020-04-28
Anticipated expiration: 2029-06-12

Abstract

The utility model relates to the technical field of expansion joints, and discloses a high-temperature metal expansion joint, which solves the problems that the sealing performance of a common metal expansion joint is poor in the using process, dust easily enters the interior of the common metal expansion joint, so that the common metal expansion joint is corroded, and the leakage phenomenon easily occurs between the common metal expansion joint and an external pipeline; the utility model can prevent external dust from entering the interior of the expansion joint and improve the corrosion resistance of the expansion joint by matching the arranged first annular sealing ring, the sleeve, the hoop and the like; the inner tube, the third annular groove and the second annular sealing ring are matched for use, the leakage phenomenon can be avoided, and the service life of the inner tube can be further prolonged due to the fact that the inner wall of the inner tube is coated with the high-temperature-resistant material.

Description

High-temperature metal expansion joint

Technical Field

The utility model belongs to the technical field of the expansion joint, specifically be a high temperature metal 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.

However, the sealing performance of the common metal expansion joint is poor in the using process, dust easily enters the interior of the common metal expansion joint, so that the common metal expansion joint is corroded, and the leakage phenomenon easily occurs between the common metal expansion joint and an external pipeline.

SUMMERY OF THE UTILITY MODEL

To the above situation, for overcoming prior art's defect, the utility model provides a high temperature metal expansion joint, the effectual in-process sealing performance who has solved general metal expansion joint and using is relatively poor, and it is inside that the dust gets into easily to make it take place the corrosion phenomenon, and take place the problem of leakage phenomenon easily between general metal expansion joint and the external pipeline.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a high temperature metal expansion joint, includes that two are taken over, the one end of two takeovers respectively with the one end fixed connection of two end pipes, first annular groove has all been seted up on the top of two end pipes, first ring type seal is all installed to the inside of two first annular grooves, two first ring type seal respectively fixed mounting in the inner wall of two lantern rings, the second annular groove has all been seted up on the top of two lantern rings, the staple bolt is all installed to the inside of two second annular grooves, two lantern rings respectively with the both ends fixed connection of bellows.

Preferably, two the equal fixed mounting of outer wall of end pipe has three fixed block, and the screw has all been seted up to the inside of six fixed blocks, through screw rod threaded connection between per two horizontal screws, and the equal threaded connection of one end of every screw rod has fastening nut.

Preferably, two limit nuts are fixedly mounted in the middle of each screw.

Preferably, two the takeover cup joints with the both ends of inner tube respectively, and the third annular groove has all been seted up to the outer wall of inner tube both sides, and second ring seal is all installed to the inside of two third annular grooves.

Preferably, the inner wall of the inner pipe is sprayed with a high-temperature resistant coating, and the high-temperature resistant coating is a phosphate aluminum powder coating.

Preferably, the outer walls of the two connecting pipes on one side are equidistantly provided with mounting holes.

Compared with the prior art, the beneficial effects of the utility model are that:

1) in the work, the first annular sealing ring, the sleeve, the hoop and the like are matched, the first annular sealing ring and the second annular groove can be clamped and fastened through the hoop, so that the sealing performance between the corrugated pipe and the end pipe is improved, external dust is prevented from entering the corrugated pipe and the end pipe, and the corrosion resistance of the expansion joint is improved;

2) the utility model discloses a sealing device, including the expansion joint, the expansion joint is connected with external pipeline, the work, the cooperation through inner tube, third annular groove and the second annular seal who sets up is used, can use through the block of second annular seal and third annular groove, can further improve its sealing performance when expansion joint and external pipeline are connected to avoid it to take place to leak the phenomenon, and because the inner wall spraying of inner tube has high temperature resistant material, can further prolong its live time.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the internal structure of the present invention;

fig. 3 is an enlarged schematic structural view of a point a in fig. 2 according to the present invention;

in the figure: 1. taking over a pipe; 2. an end tube; 3. a first annular groove; 4. a first annular seal ring; 5. a collar; 6. a second annular groove; 7. hooping; 8. a bellows; 9. a fixed block; 10. a screw; 11. fastening a nut; 12. an inner tube; 13. a third annular groove; 14. a second annular seal ring; 15. and (7) installing holes.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the 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; based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Embodiment one, given by fig. 1-3, the utility model discloses a two takeover 1, two takeover 1 one end respectively with two end pipe 2's one end fixed connection, first annular groove 3 has all been seted up on two end pipe 2's top, first ring type seal 4 is all installed to two first ring type groove 3's inside, can avoid external dust to get into, two first ring type seal 4 respectively fixed mounting in the inner wall of two lantern rings 5, second annular groove 6 has all been seted up on two lantern ring 5's top, staple bolt 7 is all installed to two second ring type groove 6's inside, can fix the lantern ring 5 through external force, two lantern rings 5 respectively with bellows 8's both ends fixed connection, can play the effect of compensation when metal expend with heat and contract with cold.

Embodiment two, on the basis of embodiment one, the equal fixed mounting of outer wall of two end pipes 2 has three fixed block 9, and the screw has all been seted up to the inside of six fixed blocks 9, through screw rod 10 threaded connection between per two horizontal screws, and the equal threaded connection of one end of every screw rod 10 has fastening nut 11, can further play the effect of compensation when metal expend with heat and contract with cold.

In the third embodiment, on the basis of the second embodiment, two limit nuts are fixedly mounted in the middle of each screw 10, so that the screw 10 can be ensured to be in close contact with the fixed block 9.

Fourth, on the basis of first embodiment, two take over 1 cup joints with the both ends of inner tube 12 respectively, and third annular groove 13 has all been seted up to the outer wall of inner tube 12 both sides, and second ring seal 14 is all installed to the inside of two third annular grooves 13, can play good sealing performance when expansion joint and external pipeline are connected.

In the fifth embodiment, on the basis of the fourth embodiment, the inner wall of the inner tube 12 is sprayed with a high temperature resistant coating, and the high temperature resistant coating adopts a phosphate aluminum powder coating, so that the inner tube has good high temperature resistance.

Sixth embodiment, on the basis of first embodiment, mounting holes 15 have been seted up to the outer wall equidistance of two takeovers 1 one side, are convenient for the expansion joint to be connected with external pipeline.

The working principle is as follows: when the expansion joint works, the first annular sealing ring 4 and the second annular groove 6 can be clamped and then fastened through the hoop 7, so that the sealing performance between the corrugated pipe 8 and the end pipe 2 is improved, external dust is prevented from entering the interior of the corrugated pipe, and the corrosion resistance of the expansion joint is improved; through the clamping effect of third annular groove 13 and second ring type sealing ring 14, further improve its sealing performance when expansion joint is connected with external pipeline to avoid it to take place the leakage phenomenon, and because the inner wall spraying of inner tube 12 has high temperature resistant material, can further prolong its live time.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A high temperature metal expansion joint, includes two takeover (1), its characterized in that: two the one end of takeover (1) respectively with the one end fixed connection of two end pipes (2), first annular groove (3) have all been seted up on the top of two end pipes (2), first ring type seal (4) are all installed to the inside of two first annular grooves (3), two first ring type seal (4) respectively fixed mounting in the inner wall of two lantern rings (5), second annular groove (6) have all been seted up on the top of two lantern rings (5), staple bolt (7) are all installed to the inside of two second ring type grooves (6), two lantern rings (5) respectively with the both ends fixed connection of bellows (8).

2. A high temperature metal expansion joint as claimed in claim 1, wherein: two the equal fixed mounting of outer wall of end pipe (2) has three fixed block (9), and the screw has all been seted up to the inside of six fixed blocks (9), through screw rod (10) threaded connection between per two horizontal screws, and the equal threaded connection of one end of every screw rod (10) has fastening nut (11).

3. A high temperature metal expansion joint as claimed in claim 2, wherein: two limiting nuts are fixedly mounted in the middle of each screw rod (10).

4. A high temperature metal expansion joint as claimed in claim 1, wherein: two take over (1) and cup joint with the both ends of inner tube (12) respectively, third annular groove (13) have all been seted up to the outer wall of inner tube (12) both sides, and second ring packing (14) are all installed to the inside of two third annular grooves (13).

5. A high temperature metal expansion joint as claimed in claim 4, wherein: the inner wall of the inner pipe (12) is sprayed with a high-temperature resistant coating, and the high-temperature resistant coating is a phosphate aluminum powder coating.

6. A high temperature metal expansion joint as claimed in claim 1, wherein: two the outer wall equidistance of takeover (1) one side has seted up mounting hole (15).