CN210293521U

CN210293521U - External pressure single-type axial corrugated pipe

Info

Publication number: CN210293521U
Application number: CN201921306214.6U
Authority: CN
Inventors: 张利平
Original assignee: Hefei Ningtai Vacuum Equipment Co ltd
Current assignee: Hefei Ningtai Vacuum Equipment Co ltd
Priority date: 2019-08-13
Filing date: 2019-08-13
Publication date: 2020-04-10
Anticipated expiration: 2029-08-13

Abstract

The utility model discloses an external pressure simplex axial type bellows, the female joint comprises an outer tube, the one end of outer tube is connected with the import end pipe, and the inner wall sliding connection of outer tube has the slip ring, and the opposite side of slip ring is connected with the one end of bellows. The utility model discloses simple structure, this device is when using, when the pipeline appears because of the heat altered shape, mechanical deformation and various mechanical vibration produced axial, the angle, during side direction and combination displacement, the device atress is also different, import end pipe and export end pipe can relative movement this moment, the bellows can receive tensile or compression, in order to avoid the bellows atress too big to lead to impaired, the atress of bellows is slowed down to the holding power of slide bar to usable spring, in order to prolong the life of bellows, and in the use scene of difference, rotatable thread bush, change the length that the thread bush is located the outside pipe, and then adjusting spring's precompression, the suitability is better.

Description

External pressure single-type axial corrugated pipe

Technical Field

The utility model relates to a bellows technical field especially relates to an external pressure simplex formula axial type bellows.

Background

The corrugated pipe is a tubular elastic sensitive element which is formed by connecting foldable corrugated sheets along the folding and stretching direction. The corrugated pipe has wide application in instruments and meters, and is mainly used as a measuring element of a pressure measuring instrument to convert pressure into displacement or force. The corrugated pipe has thin pipe wall and high sensitivity, and the measurement range is from tens of Pa to tens of MPa. The opening end of the spring is fixed, the sealing end is in a free state, and the elasticity is increased by using an auxiliary spiral spring or a reed; when the existing corrugated pipe is used, the corrugated pipe is damaged due to overlarge stress sometimes.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the shortcoming that exists among the prior art, and the single axial type bellows of external pressure that proposes, the utility model discloses can avoid the bellows atress too big to lead to impaired, utilize the spring to slow down the atress of bellows to the holding power of slide bar to the life of extension bellows.

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

the utility model provides an external pressure simplex axial type bellows, includes the outer tube, the one end of outer tube is connected with the import end pipe, and the inner wall sliding connection of outer tube has the slip ring, and the opposite side of slip ring is connected with the one end of bellows, and the other end of bellows is connected with the export end pipe, export end pipe and outer tube sliding connection, and the elasticity regulating part is installed to the lateral wall of outer tube.

Preferably, the elastic adjusting part comprises a threaded sleeve, the threaded sleeve is in threaded connection with the outer pipe, the inner wall of the threaded sleeve is connected with a sliding rod through a spring, and the end part of the sliding rod is abutted to the side wall of the sliding ring.

Preferably, the ends of the inlet end pipe and the outlet end pipe are connected with flanges.

Preferably, the outer ring of the sliding ring and the inner ring at the joint of the outer pipe and the outlet end pipe are both connected with a sealing ring, and the section of the sealing ring is in a T shape.

Preferably, the number of the thread sleeves is three, the three thread sleeves are distributed at equal intervals, and the thread sleeves are provided with scale marks.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses simple structure, this device is when using, when the pipeline appears because of the heat altered shape, mechanical deformation and various mechanical vibration produced axial, the angle, during side direction and combination displacement, the device atress is also different, import end pipe and export end pipe can relative movement this moment, the bellows can receive tensile or compression, in order to avoid the bellows atress too big to lead to impaired, the atress of bellows is slowed down to the holding power of slide bar to usable spring, in order to prolong the life of bellows, and in the use scene of difference, rotatable thread bush, change the length that the thread bush is located the outside pipe, and then adjusting spring's precompression, the suitability is better.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a cross-sectional view of FIG. 1;

fig. 3 is a side view of the present invention.

In the figure: the sealing device comprises an outer pipe 1, a threaded sleeve 2, a flange 3, an inlet end pipe 4, a sliding ring 5, a sliding rod 6, a spring 7, a corrugated pipe 8, an outlet end pipe 9 and a sealing ring 10.

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, an external pressure single-type axial corrugated pipe comprises an outer pipe 1, wherein one end of the outer pipe 1 is connected with an inlet end pipe 4, the inner wall of the outer pipe 1 is connected with a sliding ring 5 in a sliding manner, the other side of the sliding ring 5 is connected with one end of a corrugated pipe 8, the other end of the corrugated pipe 8 is connected with an outlet end pipe 9, the outlet end pipe 9 is connected with the outer pipe 1 in a sliding manner, and an elastic adjusting part is installed on the side wall of the outer pipe 1.

The elastic adjusting part comprises a threaded sleeve 2, the threaded sleeve 2 is in threaded connection with the outer pipe 1, the inner wall of the threaded sleeve 2 is connected with a sliding rod 6 through a spring 7, and the end part of the sliding rod 6 is abutted against the side wall of the sliding ring 5 and used for compensating the situation that the elasticity of the corrugated pipe 8 is insufficient.

The end parts of the inlet end pipe 4 and the outlet end pipe 9 are both connected with flanges 3, so that the pipeline is convenient to install and connect.

The outer ring of the sliding ring 5 and the inner ring at the joint of the outer pipe 1 and the outlet end pipe 9 are both connected with a sealing ring 10, and the section of the sealing ring 10 is T-shaped, so that the sealing performance is improved.

The threaded sleeves 2 are three, the three threaded sleeves 2 are distributed at equal intervals, and scale marks are arranged on the threaded sleeves 2 to ensure the stress balance of the sliding ring 5.

In the present case, this device is when using, when appearing the pipeline because of heat altered shape, mechanical deformation and various mechanical vibration and produce the axial, the angle, the side direction and when combination displacement, the device atress is also different, import end pipe 4 and export end pipe 9 can relative movement this moment, bellows 8 can receive tensile or compression, in order to avoid bellows 8 atress too big to lead to impaired, usable spring 7 slows down the atress of bellows 8 to the holding power of slide bar 6, in order to prolong the life of bellows 8, and in different use scenes, rotatable thread bush 2, change the length that thread bush 2 is located outer tube 1 inside, and then adjust the precompression of spring 7, and therefore the suitability is better.

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 an external pressure simplex axial type bellows, includes outer tube (1), its characterized in that, the one end of outer tube (1) is connected with import end pipe (4), and the inner wall sliding connection of outer tube (1) has slip ring (5), and the opposite side of slip ring (5) is connected with the one end of bellows (8), and the other end of bellows (8) is connected with export end pipe (9), and export end pipe (9) and outer tube (1) sliding connection, the lateral wall of outer tube (1) is installed elasticity regulating part.

2. An external pressure single type axial corrugated pipe according to claim 1, wherein the elastic adjustment part comprises a threaded sleeve (2), the threaded sleeve (2) is in threaded connection with the outer pipe (1), the inner wall of the threaded sleeve (2) is connected with a slide rod (6) through a spring (7), and the end of the slide rod (6) is abutted against the side wall of the sliding ring (5).

3. An external pressure single type axial corrugated pipe according to claim 1, wherein the end parts of the inlet end pipe (4) and the outlet end pipe (9) are connected with flanges (3).

4. An external pressure single type axial corrugated pipe according to claim 1, wherein the outer ring of the sliding ring (5) and the inner ring of the joint of the outer pipe (1) and the outlet end pipe (9) are both connected with a sealing ring (10), and the cross section of the sealing ring (10) is T-shaped.

5. An external pressure single type axial corrugated pipe as claimed in claim 2 wherein, there are three screw thread sleeves (2), and the three screw thread sleeves (2) are distributed with equal space, and the screw thread sleeves (2) are provided with scale marks.