CN215721617U

CN215721617U - Bellows expansion joint

Info

Publication number: CN215721617U
Application number: CN202122080232.0U
Authority: CN
Inventors: 郭瑞鹏
Original assignee: Hebei Ruitian Pipeline Equipment Co ltd
Current assignee: Hebei Ruitian Pipeline Equipment Co ltd
Priority date: 2021-08-31
Filing date: 2021-08-31
Publication date: 2022-02-01
Anticipated expiration: 2031-08-31

Abstract

The utility model discloses a corrugated pipe expansion joint which comprises an expansion joint body, wherein a corrugated pipeline is arranged outside the expansion joint body, a top cover is arranged at the top end of the expansion joint, a bottom plate is arranged at the bottom end of the expansion joint, four first bulges are fixedly arranged on the side of the top cover, first through holes are formed in the four first bulges, a first connecting port is formed in the top end of the top cover, and a plurality of second through holes are formed in the top end of the top cover. The utility model has the beneficial effects that: through the sealing washer that is equipped with, can increase the leakproofness of this bellows expansion joint, can install this bellows expansion joint on the pipeline through the first interface that is equipped with, the first interface of this bellows expansion joint is equipped with multiple connection size, can connect the pipeline of different diameters size, has increased the practicality of this bellows expansion joint.

Description

Bellows expansion joint

Technical Field

The utility model relates to the technical field of expansion joints, in particular to a corrugated pipe expansion joint.

Background

Expansion joints are also conventionally called compensators, or expansion joints. It is composed of bellows (an elastic element) and its working body, end pipe, support, flange and guide pipe. The expansion joint is a flexible structure provided on the vessel shell or pipe in order to compensate for additional stresses due to temperature differences and mechanical vibrations. The effective telescopic deformation of the working body corrugated pipe is utilized to absorb the dimensional change of pipelines, conduits, containers and the like caused by expansion and contraction due to heat and the like or compensate the axial, transverse and angular displacement of the pipelines, the conduits, the containers and the like.

In noise reduction, vibration reduction and heat supply, in order to prevent the pipeline from deforming or damaging due to thermal extension or temperature stress when the heat supply pipeline is heated, a compensator is required to be arranged on the pipeline to compensate the thermal extension of the pipeline, so that the stress of the pipe wall and the acting force acting on a valve piece or a bracket structure are reduced, for example, an expansion joint welded on a shell of a fixed tube plate type heat exchanger has large axial flexibility and is easy to deform, the thermal expansion difference generated by the pipe and the shell due to different wall temperatures can be compensated, the axial loads of the pipe and the shell are reduced, the temperature difference stress of the pipe, the pipe plate and the shell is reduced, and the strength damage, the instability damage and the pull-out damage of the pipe are avoided.

The existing expansion joint is lack of a protection device, so that the allowable compensation amount is often exceeded when the expansion joint is used, the expansion joint is damaged, and the existing expansion joint cannot be used for connecting pipelines with different sizes due to single size.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a corrugated pipe expansion joint to solve the problems that the expansion joint in the market at present lacks a compensation amount protection device and the joint size is single, which are provided by the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: a corrugated pipe expansion joint comprises an expansion joint body, wherein a corrugated pipeline is arranged outside the expansion joint body, a top cover is arranged at the top end of the expansion joint, and a bottom plate is arranged at the bottom end of the expansion joint;

the top cap avris fixed mounting has four first archs, four first through-holes have all been seted up to first arch, first connector has been seted up on the top cap top, a plurality of second through-hole has been seted up on the top cap top.

In order to make the threaded connecting rod connect the top cover and the bottom plate together, as a preferred scheme of the utility model: the bottom plate avris fixed mounting has four second archs, four the third through-hole has all been seted up to the second arch, the position corresponds the setting about first arch and the second arch, the second connector has been seted up to the bottom plate bottom.

In order that the expansion joint does not exceed the maximum compensation amount when in use, the utility model adopts a preferable scheme that: the first through hole and the third through hole are located on the same axis, a threaded connecting rod is installed in the first through hole and penetrates through the first through hole and the third through hole, nuts are installed on the top ends and the bottom ends of the first protrusion and the second protrusion, and the nuts are in threaded connection with the threaded connecting rod.

In order to make the expansion joint have better sealing performance, the utility model adopts a preferable scheme that: sealing rings are arranged at the joints of the expansion joint body, the top cover and the bottom plate.

In order to make the expansion joint capable of connecting pipelines with different diameters, the utility model adopts a preferable scheme that: the first connecting port and the second connecting port are provided with four ports with different sizes.

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

1) through the corrugated pipe, the corrugated expansion joint can stretch out and draw back along the axial direction of the pipe, length compensation is carried out on the axial direction of the pipe, a small amount of bending is allowed, the top cover and the bottom plate are connected together through the threaded connecting rod, and the corrugated expansion joint is prevented from exceeding the allowed compensation amount.

2) Through the sealing washer that is equipped with, can increase the leakproofness of this bellows expansion joint, can install this bellows expansion joint on the pipeline through the first interface that is equipped with, the first interface of this bellows expansion joint is equipped with multiple connection size, can connect the pipeline of different diameters size.

Drawings

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

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

FIG. 3 is a schematic side view of the present invention.

In the figure: 1. an expansion joint body; 2. a corrugated pipe; 3. a top cover; 4. a base plate; 5. a first protrusion; 6. a first through hole; 7. a first connection port; 8. a second through hole; 9. a second protrusion; 10. a third through hole; 11. a second connection port; 12. a threaded connecting rod; 13. a nut; 14. and (5) sealing rings.

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 a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a corrugated pipe expansion joint comprises an expansion joint body 1, a corrugated pipeline 2 is arranged outside the expansion joint body 1, a top cover 3 is arranged at the top end of the expansion joint, and a bottom plate 4 is arranged at the bottom end of the expansion joint;

3 avris fixed mounting of top cap has four first archs 5, and first through-hole 6 has all been seted up to four first archs 5, and first connector 7 has been seted up on 3 tops of top cap, and a plurality of second through-hole 8 has been seted up on 3 tops of top cap.

Specifically, the bellows expansion joint uses an expansion joint that metal bellows made, through the corrugated pipe 2 that is equipped with, make this bellows expansion joint can follow pipeline axis direction flexible, carry out length compensation in the pipeline axial, also allow a small amount of bending, can install this bellows expansion joint on the pipeline through the first connecting port 7 that is equipped with, the first connecting port 7 of this bellows expansion joint is equipped with multiple connection size, can connect the pipeline of different diameters size, the practicality of this bellows expansion joint has been increased.

In this embodiment: 4 avris fixed mounting of bottom plate has four the protruding 9 of second, and third through hole 10 has all been seted up to four protruding 9 of second, and the position corresponds the setting from top to bottom of first protruding 5 and the protruding 9 of second, and second connector 11 has been seted up to 4 bottoms of bottom plate.

Specifically, through with first arch 5 and the protruding 9 upper and lower position of second correspond the setting, be convenient for use threaded connection pole 12 link together top cap 3 and bottom plate 4, prevent that this bellows expansion joint from connecting the unstablely when using, through the second connector 11 that is equipped with, can cooperate first connector 7 to link together the pipeline of two kinds of different diameters through this bellows expansion joint, increased the functionality of this bellows expansion joint.

In this embodiment: first through-hole 6 and third through-hole 10 are located the same axis, and first through-hole internally mounted has threaded connection pole 12, and threaded connection pole 12 runs through first through-hole 6 and third through-hole 10, and nut 13, nut 13 and threaded connection pole 12 threaded connection are all installed to the top and the bottom of first arch 5 and the protruding 9 of second.

Specifically, the first through hole 6 and the third through hole 10 are located on the same axis, so that the threaded connecting rod 12 can penetrate through the first through hole 6 and the third through hole 10, the threaded connecting rod 12 is installed in the first through hole 6 and the third through hole 10 through a plurality of nuts 13 in threaded connection on the threaded connecting rod 12, the threaded connecting rod 12 connects the top cover 3 and the bottom plate 4 together, and the bellows expansion joint is prevented from exceeding an allowable compensation amount.

In this embodiment: sealing rings 14 are arranged at the joints of the expansion joint body 1, the top cover 3 and the bottom plate 4.

Specifically, the sealing ring 14 is installed at the joint of the expansion joint body 1, the top cover 3 and the bottom plate 4, so that the sealing performance of the expansion joint of the corrugated pipe can be improved.

In this embodiment: the first connector and the second connector are provided with four connectors with different sizes.

Specifically, when the first connecting port and the second connecting port are connected with the pipeline, the pipelines with different diameters can be connected through the interfaces with different sizes.

The working principle is as follows: when the corrugated pipe expansion joint is used, firstly, a worker installs the corrugated pipe expansion joint, installs the expansion joint body 1 with the top cover 3 and the bottom plate 4 and installs the sealing ring 14, then connects the threaded connecting rod 12 in the first through hole 6 and the third through hole 10 in a penetrating way, fixes the threaded connecting rod 12 through the provided nut 13, simultaneously fixedly connects the top cover 3 and the bottom plate 4, enables the corrugated pipe expansion joint to extend and contract along the axial direction of the pipe through the provided corrugated pipe 2, carries out length compensation in the axial direction of the pipe, then connects the corrugated pipe expansion joint on the pipe, adjusts the nut 13 to change the distance between the top cover 3 and the bottom plate 4 through calculating the required compensation amount so as to prevent the corrugated pipe expansion joint from being damaged due to exceeding the allowable compensation amount in the use process, connects the pipe and the corrugated pipe expansion joint through the provided first connecting port 7, the bellows expansion joint can be connected to pipelines of different sizes through various sizes of the first connecting port 7, and the sealing performance of the bellows expansion joint can be increased through the sealing ring 14.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes, modifications, equivalents, and improvements may be made without departing from the spirit and scope of the utility model.

Claims

1. A bellows expansion joint, includes expansion joint body (1), its characterized in that: a corrugated pipeline (2) is arranged outside the expansion joint body (1), a top cover (3) is arranged at the top end of the expansion joint, and a bottom plate (4) is arranged at the bottom end of the expansion joint;

top cap (3) avris fixed mounting has four first archs (5), four first through-hole (6) have all been seted up in first arch (5), first connector (7) have been seted up on top cap (3) top, a plurality of second through-hole (8) have been seted up on top cap (3) top.

2. A bellows expansion joint according to claim 1, wherein: bottom plate (4) avris fixed mounting has four protruding (9), four of second third through-hole (10) have all been seted up in the protruding (9) of second, the position corresponds the setting about first arch (5) and the protruding (9) of second, second connector (11) have been seted up to bottom plate (4) bottom.

3. A bellows expansion joint according to claim 1, wherein: first through-hole (6) and third through-hole (10) are in same axis, install threaded connection pole (12) in the first through-hole, threaded connection pole (12) run through first through-hole (6) and third through-hole (10), nut (13) are all installed on the top and the bottom of first arch (5) and second arch (9), nut (13) and threaded connection pole (12) threaded connection.

4. A bellows expansion joint according to claim 1, wherein: sealing rings (14) are installed at the joints of the expansion joint body (1), the top cover (3) and the bottom plate (4).

5. A bellows expansion joint according to claim 1, wherein: the first connecting port (7) and the second connecting port (11) are provided with four ports with different sizes.