CN216955824U

CN216955824U - Straight-through type nondestructive testing device

Info

Publication number: CN216955824U
Application number: CN202220157807.6U
Authority: CN
Inventors: 戴天奇; 王哲骏; 胡大炜
Original assignee: 719th Research Institute of CSIC
Current assignee: 719th Research Institute of CSIC
Priority date: 2022-01-20
Filing date: 2022-01-20
Publication date: 2022-07-12
Anticipated expiration: 2032-01-20

Abstract

The utility model relates to the technical field of nondestructive testing, and provides a straight-through type nondestructive testing device which comprises a straight-through pipe, an injection pressure small pipe, a connecting small pipe and a testing probe. The direct pipe is provided with an interface connected with a pipeline to be detected, the injection small pipe is provided with an interface connected with an external pressure source, the connection small pipe is arranged in the direct pipe, the first end of the connection small pipe is connected with the injection small pipe through a connecting piece, the second end of the connection small pipe is connected with the detection probe through a connecting piece, the detection probe is a plurality of guide pipes which are distributed in a scattering mode along the circumferential direction according to a preset angle, a piston is arranged in each guide pipe, and a sensor is fixedly arranged at the outer end of each piston. The utility model can realize real-time nondestructive detection of the pipeline to be detected under various working conditions by arranging the detection probe provided with the sensor in the straight-through pipe and connecting the straight-through pipe with the pipeline to be detected, and can greatly improve the nondestructive detection efficiency of the pipeline when being applied to the pipeline to be detected which is difficult to arrange the sensor outside the pipeline.

Description

Straight-through type nondestructive testing device

Technical Field

The utility model relates to the technical field of pipeline detection, in particular to a nondestructive testing device.

Background

The nondestructive testing is a method for inspecting and testing the structure, state, and type, quantity, shape, property, position, size, distribution and changes of defects inside and on the surface of a test piece by using a physical or chemical method as a means on the premise that the inside of a mechanical material is inspected without damaging or influencing the service performance of an inspected object and the internal structure of the inspected object and utilizing the changes of thermal, acoustic, optical, electrical, magnetic and other reactions caused by the existence of internal structural abnormality or defects. The current nondestructive testing method mainly comprises four methods, namely ray inspection (RT), Ultrasonic Testing (UT), magnetic powder testing (MT) and liquid Penetration Testing (PT).

However, the existing nondestructive testing technology generally needs to install or arrange the testing instrument outside the tested piece when applied, and is difficult to be effectively applied when the tested piece is not easy to reach areas such as radiation environment or polluted environment.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model aims to provide a through type nondestructive testing device, which is used for solving the problems that the application environment of the existing nondestructive testing device is limited, and the nondestructive testing technology is difficult to implement for a tested piece in an unreachable area or an area which is difficult to reach.

(II) technical scheme

In order to solve the technical problem, the utility model provides a straight-through type nondestructive testing device which comprises a straight-through pipe, an injection pressure small pipe, a connecting small pipe and a testing probe, wherein the straight-through pipe is provided with an interface connected with a tested pipeline; the pressure injection small pipe is provided with an interface connected with an external pressure source; the connecting small pipe is arranged in the through pipe; the detection probes are a plurality of guide pipes which are distributed in a scattering manner along the circumferential direction according to a preset angle;

the external pressure source is an air pressure source or a hydraulic pressure source;

the detection probe is provided with a central inlet, the first end of the connecting small pipe is connected with the small injection pipe through a connecting piece, and the second end of the connecting small pipe is connected with the central inlet through a connecting piece;

the central inlet is communicated with each guide pipe of the detection probe, a piston is arranged in each guide pipe, and a sensor is fixedly arranged at the outer end part of the piston, which is far away from the central inlet;

each conduit of the detection probe has the same shape with the inner wall of the detected pipeline at the outer edge far away from the central inlet;

the piston of the detection probe moves along the inner wall of the catheter in the catheter;

a check ring is arranged in each guide pipe of the detection probe and used for limiting the moving range of the piston;

the sensor of the detection probe is connected with the outside through a cable;

the sensor of the detection probe is a piezoelectric sensor or a magnetostrictive transducer.

(III) technical effects

The straight-through type nondestructive testing device provided by the utility model has the advantages that the through pipe is connected with the pipeline to be tested by arranging the testing probe provided with the sensor in the through pipe, the real-time nondestructive testing of the pipeline to be tested under various working conditions can be realized in the through pipe, and the pipeline testing is carried out by applying the straight-through type nondestructive testing device provided by the utility model aiming at the pipeline to be tested which is difficult to arrange the sensor outside the through pipe, so that the nondestructive testing efficiency of the pipeline to be tested is greatly improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic structural view of a flow-through nondestructive testing apparatus according to an embodiment of the present invention;

fig. 2 and 3 are schematic structural views of a detection probe according to an embodiment of the present invention.

In the figure: 1-straight pipe, 2-injection pressure pipe, 3-connection pipe, 4-detection probe, 5-measured pipe, 6-external pressure source, 7-partition board, 8-polluted environment area, 41-first pipe, 42-second pipe, 43-third pipe, 44-central inlet, 45-piston, 46-piezoelectric sensor, 47-cable and 48-limit retainer ring.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1, the embodiment provides a straight-through type nondestructive testing device, which includes a straight-through pipe 1, an injection pressure small pipe 2, a connecting small pipe 3 and a testing probe 4, wherein the straight-through pipe 1 is connected with a tested pipeline 5 through a flange; the injection pressure small pipe 2 is connected with an external pressure source 6 through a threaded joint; the first end of the connecting small pipe 3 is connected with the injection small pipe 2 through a threaded joint, and the second end of the connecting small pipe 3 is connected with the detection probe 4 through a threaded joint. The tested pipeline 4 penetrates through the partition plate 7, and the space of one side of the partition plate 7, which is far away from the straight-through pipe 1, is a polluted environment area 8.

From the injection pipe 2, pressurized gas or liquid from an external pressure source 6 enters the connection pipe 3 and the detection probe 4 arranged inside the straight-through pipe 1.

Referring to fig. 2, in the present embodiment, 3 conduits, specifically, a first conduit 41, a second conduit 42, and a third conduit 43, which are uniformly distributed along the circumferential direction at 120 ° are disposed in the detection probe 4, and outer edges of the first conduit 41, the second conduit 42, and the third conduit 43, which are far away from the central line of the detected pipe 5, are all tightly attached to the inner wall of the detected pipe 5.

Referring to fig. 3, in this embodiment, a component of the detection probe 4 connected to the small connecting pipe 3 through a threaded joint is a central inlet 44, a piston 45 is installed in the first guide pipe 41, a piezoelectric sensor 46 is fixedly installed on the piston 45, the piezoelectric sensor 46 is connected to the outside through a cable 47, and a limit check ring 48 is installed in the first guide pipe 41 for limiting a downward movement range of the piston 45.

The second guide duct 42 and the third guide duct 43 have the same structure as the first guide duct 41.

The pressure gas or liquid from the external pressure source 6 enters the first conduit 41, the second conduit 42 and the third conduit 43 through the central inlet 44 of the detection probe 4, the pressure gas or liquid drives the piston 45 to move towards the inner wall of the measured pipeline 5 by taking the first conduit 41 as an example until the piezoelectric sensor 46 fixedly arranged on the outer end surface of the piston 45 contacts with the inner wall of the measured pipeline 45, and the piezoelectric sensor 46 transmits the received signal to the outside through the cable 47 after being pressed.

The characteristics that the measured pipeline 5 is located in the polluted environment area 8 which is not easy to reach are fully considered in the embodiment, the nondestructive testing of the measured pipeline 5 can be completed without entering the polluted environment area 8 by arranging the detection probe 4 in the measured pipeline 5, and the nondestructive testing efficiency is greatly improved.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. A straight-through type nondestructive testing device comprises a straight-through pipe, an injection pressure small pipe, a connecting small pipe and a testing probe, and is characterized in that the straight-through pipe is provided with an interface connected with a tested pipeline; the pressure injection small pipe is provided with an interface connected with an external pressure source; the connecting small pipe is arranged in the through pipe; the detection probes are a plurality of guide pipes which are distributed in a scattering mode along the circumferential direction according to a preset angle.

2. The flow-through, non-destructive inspection device of claim 1, wherein said external pressure source is a pneumatic or hydraulic source.

3. A flow-through nondestructive inspection apparatus according to claim 1 wherein said inspection probe has a central inlet, said connecting tubule first end connected to said injection tubule by a connector, said connecting tubule second end connected to said central inlet by a connector.

4. A flow-through nondestructive inspection apparatus according to claim 3 wherein said central inlet communicates with each of said conduits of said inspection probe, each of said conduits having a piston mounted therein, said piston having a sensor fixedly mounted at an outer end remote from said central inlet.

5. A flow-through, non-destructive testing apparatus according to claim 4, wherein each of said conduits has the same shape as the inner wall of said pipe under test at the outer edge remote from said central inlet.

6. The flow-through, non-destructive inspection device of claim 4, wherein said piston moves within said conduit along said conduit inner wall.

7. The flow-through nondestructive inspection apparatus according to claim 4 wherein said sensor is connected to an external collection device by a cable.

8. The flow-through, nondestructive testing device of claim 4 or 7 wherein said sensor is a piezoelectric sensor or a magnetostrictive transducer.