In-pipe supporting and centering device

Abstract

The in-pipe supporting and centering device comprises a hollow pipe, the hollow part of the hollow pipe is used as a wire passing and water passing corresponding area, middle supporting pieces are arranged at the two ends of the hollow pipe, and the middle supporting pieces are supported on the inner wall of a pipe fitting when located in the pipe fitting and used as centering supporting structures to position the hollow pipe in the center of the pipe fitting; the middle supporting piece comprises a plurality of evenly-distributed supporting rods, rollers are arranged at the ends of the supporting rods, and when the hollow pipe moves, the multiple supporting rods and the rollers at the ends are supported on the same circular tangent plane of the inner wall of the pipe at the same time, so that a centering and supporting integrated structure for ensuring that the hollow pipe is located in the center of the to-be-detected pipe is formed.

Description

Technical Field

[0001] The invention relates to a rotary ultrasonic detection technology and equipment using the same, in particular to an in-pipe support and centering device. Background Art

[0002] When using in-pipe rotary ultrasonic testing, components such as the rotating head, focusing probe, and reflector must be placed inside the pipe to be tested, in the center of the pipe, and maintain a relatively stable position during the testing process.

[0003] Therefore, it is very necessary to provide an in-pipe centering device that is easy to move and reliable in centering.

[0004] Therefore, it is necessary to provide an in-pipe support and centering device to achieve the above-mentioned purpose. Summary of the Invention

[0005] The purpose of the present invention is to provide a pipe inner support and centering device.

[0006] The technical solution is as follows:

[0007] A pipe support and centering device includes a hollow pipe, the hollow portion of which is used as a corresponding area for passing the line and the water, and a middle support member is provided at both ends of the hollow pipe. When the middle support member is inside the pipe, it is supported on the inner wall of the pipe and serves as a centering support structure to position the hollow pipe at the center of the pipe;

[0008] The middle support member includes several evenly distributed support rods, and rollers are provided at the ends of the support rods. When the hollow tube moves, several support rods and end rollers are supported on the same circular cross-section of the inner wall of the tube at the same time, forming an integrated structure of centering and support to ensure that the hollow tube is in the center of the tube to be tested.

[0009] Furthermore, there are five support rods, and the ends are roller-set by roller fixing pins.

[0010] Furthermore, the support rod includes a fixed end, which is correspondingly arranged on the bracket ring, and the fixed end is locked to the bracket ring through the oblique pressure sleeve and the fixed ring.

[0011] Furthermore, the bracket ring is fixed on the hollow tube by means of bracket ring set screws.

[0012] Furthermore, the middle support member also includes a compression elastic member, and the two ends of the compression elastic member respectively support the oblique pressure sleeve and the pre-compression fixing ring.

[0013] Furthermore, the compression elastic member is a compression spring, a tension spring, a rubber member, or a polyurethane elastomer.

[0014] Furthermore, the pre-stressed fixing ring is fixed to the hollow tube by means of a pre-stressed fixing ring portion set screw.

[0015] Compared with the prior art, the present invention has the following beneficial effects: compact and simple structure, easy assembly; stable and reliable centering effect; adjustable support size to meet a certain size range and reduce the specifications of the centering device; rolling contact, reduced wear and extended service life; adjustable clamping elastic parts to provide suitable support force. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a perspective view of the present invention.

[0017] Figure 2 It is a cross-sectional view of the present invention.

[0018] Figure 3 yes Figure 2 A partial enlarged view of .

[0019] Figure 4 yes Figure 3 It is a partial enlarged picture. DETAILED DESCRIPTION

[0020] Example:

[0021] See also Figure 1-4 This embodiment shows an in-pipe support and centering device, comprising a hollow pipe 1. The hollow portion of the hollow pipe 1 is used as a corresponding area for threading and water passing. Both ends of the hollow pipe 1 are provided with a middle support member. When the middle support member is inside the pipe, it is supported on the inner wall of the pipe and serves as a centering support structure to position the hollow pipe at the center of the pipe.

[0022] The middle support member includes several evenly distributed support rods 6, and rollers 7 are provided at the ends of the support rods 6. When the hollow tube 1 moves, several support rods 6 and end rollers 7 are simultaneously supported on the same circular cross-section of the inner wall of the tube, forming an integrated structure for centering and supporting the hollow tube 1 in the center of the tube to be tested.

[0023] in:

[0024] There are five support rods 6 , and the ends thereof are fixed with rollers 7 via roller fixing pins D.

[0025] The support rod 6 includes a fixed end, which is correspondingly arranged on the bracket ring 8, and is locked to the bracket ring 8 by the inclined pressure sleeve 4 and the fixed ring 5.

[0026] The bracket ring 8 is fixed to the hollow tube 1 by means of the bracket ring set screws C.

[0027] After the end of the oblique pressure sleeve 4 and the upper part of the bracket ring 8 correspond to each other, the fixed ring 5 is set and fixed by the fixing pin B.

[0028] The middle support member further includes a compression elastic member 3 , the two ends of which respectively support the oblique pressure sleeve 4 and the pre-compression fixing ring 2 .

[0029] The compression elastic member 3 is a compression spring, a tension spring, a rubber member, or a polyurethane elastomer.

[0030] The preload fixing ring 2 is fixed on the hollow tube 1 by means of a set screw A on the preload fixing ring portion.

[0031] Both ends of the hollow tube 1 have external threads, which are convenient for installation: one end is threadedly connected to the connector of the water supply pipe, the probe cable passes through the pipe, and the other end is threadedly connected to the rotating head and the probe.

[0032] The support ring 8 is installed on the hollow tube and fixed to the outside of the tube with a set screw C. The oblique end of the support rod 6 is inserted into the groove of the support ring 8 and nested in the fixed ring 5. The fixed ring 5 and the support ring 8 are riveted together with the fixing pin B. The oblique end of the support rod 6 is then clamped into the groove of the support ring 8.

[0033] The oblique pressure sleeve 4, the compression spring 3, and the pre-loaded fixed ring 2 are sequentially sleeved on the hollow rod 6 and pressed against the support ring 8. The inner inclined surface of the oblique pressure sleeve 4 presses against the oblique end of the support rod 6. The set screw A fixes the fixed ring 8 to the hollow tube.

[0034] The oblique pressure sleeve 4 is axially movable within the hollow tube. Preloaded by the compression spring 3, it abuts against the side of the support ring 8, compressing the oblique end of the support rod 6. Leveraging this force, the roller end of the support rod 6 expands outward, pressing against the inner wall of the tube under test, completing the positioning. During this movement, slight variations in the tube diameter cause the extension and distance of the support rod 6 to change, shifting the oblique pressure sleeve 4 back and forth accordingly, causing the compression spring 3 to expand and contract, thereby adapting to the change in diameter.

[0035] Compared with the prior art, the present invention has the following beneficial effects: compact and simple structure, easy assembly; stable and reliable centering effect; adjustable support size to meet a certain size range and reduce the specifications of the centering device; rolling contact, reduced wear and extended service life; adjustable clamping elastic parts to provide suitable support force.

[0036] For those skilled in the art, several variations and improvements can be made without departing from the inventive concept of the present invention, and all of these fall within the scope of protection of the present invention.

Claims

1. A pipe support and centering device, characterized in that : It includes a hollow tube, the hollow part of the hollow tube is used for the corresponding area of ​​the line and the water, and a middle support is provided at both ends of the hollow tube. When the middle support is inside the pipe, it is supported on the inner wall of the pipe and serves as a centering support structure to position the hollow tube at the center of the pipe; The middle support member includes several evenly distributed support rods, and rollers are provided at the ends of the support rods. When the hollow tube moves, several support rods and end rollers are supported on the same circular cross-section of the inner wall of the tube at the same time, forming an integrated structure of centering and support to ensure that the hollow tube is in the center of the tube to be tested.

2. The in-pipe support and centering device according to claim 1, characterized in that : There are five support rods, and the ends are fixed with rollers via roller fixing pins for roller setting.

3. The in-pipe support and centering device according to claim 1, characterized in that :The support rod includes a fixed end, which is correspondingly arranged on the bracket ring, and the fixed end is locked to the bracket ring through the oblique pressure sleeve and the fixed ring.

4. The in-pipe support and centering device according to claim 3, characterized in that : The bracket ring is fixed on the hollow tube through the bracket ring set screw.

5. The in-pipe support and centering device according to claim 1, characterized in that : The middle support member also includes a compression elastic member, and the two ends of the compression elastic member respectively support the oblique pressure sleeve and the pre-compression fixing ring.

6. The in-pipe support and centering device according to claim 5, characterized in that : The compression elastic parts are compression springs, tension springs, rubber parts, and polyurethane elastomers.

7. The in-pipe support and centering device according to claim 5, characterized in that : The preload fixing ring is fixed to the hollow tube by means of a set screw of the preload fixing ring.

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