阅读说明：本技术 一种用于声发射信号检测管道裂纹的装置 (Device for detecting pipeline cracks by acoustic emission signals ) 是由 王新华 焦玉琳 李斌 王罗景 田青 王嘉艺 张军 刘洋 赵锐 于 2021-02-23 设计创作，主要内容包括：本发明涉及一种用于声发射信号检测管道裂纹的装置,所述用于声发射信号检测管道裂纹的装置包括：横板、设置在所述横板下方的固定板、与所述固定板滑动套合的伸缩板,以及固定安装在所述固定板上的立板,将固定板和伸缩板置于管道中,横板覆盖在管口上,动力组件工作,带动伸缩板滑动,从而使得第一滑轮和第二滑轮与管道的内壁紧密接触,当驱动组件正向工作时,固定板和所述伸缩板在管道中向下运动,第一滑轮转动,并通过所述传动组件带动所述检测组件在管道中转动,检测组件对管道内壁的裂纹进行检测,驱动组件反向工作,便可进行二次检测并将固定板和伸缩板从管道中取出,实现了装置对管道中裂纹有效的旋转式自动检测功能。(The invention relates to a device for detecting pipeline cracks by using acoustic emission signals, which comprises the following components: the automatic detection device comprises a transverse plate, a fixed plate, an expansion plate and a vertical plate, wherein the fixed plate is arranged below the transverse plate, the expansion plate is in sliding fit with the fixed plate, the vertical plate is fixedly mounted on the fixed plate, the fixed plate and the expansion plate are arranged in a pipeline, the transverse plate covers the pipe orifice, a power assembly works to drive the expansion plate to slide, so that a first pulley and a second pulley are in close contact with the inner wall of the pipeline, when the driving assembly works in the forward direction, the fixed plate and the expansion plate move downwards in the pipeline, the first pulley rotates and drives a detection assembly to rotate in the pipeline through the transmission assembly, the detection assembly detects cracks on the inner wall of the pipeline, the driving assembly works in the reverse direction, secondary detection can be carried out, the fixed plate and the expansion plate are taken out of the pipeline, and the function of the device.)

1. An apparatus for detecting pipe cracks using acoustic emission signals, the apparatus comprising: the device comprises a transverse plate (1), a fixed plate (5) arranged below the transverse plate (1), a telescopic plate (6) in sliding fit with the fixed plate (5), and a vertical plate (14) fixedly installed on the fixed plate (5), wherein the vertical plate (14) is connected with a driving assembly installed on the transverse plate (1);

the device for detecting the pipeline cracks by using the acoustic emission signals further comprises a power assembly which is arranged on the fixing plate (5) and connected with the expansion plate (6), a first pulley (9) is installed at one end, far away from the expansion plate (6), of the fixing plate (5), a second pulley (13) is arranged on one side, far away from the fixing plate (5), of the expansion plate (6) through an elastic assembly, and when the power assembly works, the expansion plate (6) is driven to slide in the fixing plate (5), so that the first pulley (9) and the second pulley (13) are in close contact with the inner wall of the pipeline;

the device for detecting the pipeline cracks by the acoustic emission signals further comprises a detection assembly mounted on the lower portion of the fixing plate (5), the detection assembly is connected with the first pulley (9) through a transmission assembly mounted on the upper portion of the fixing plate (5), when the driving assembly works to enable the fixing plate (5) and the expansion plate (6) to move downwards in the pipeline, the first pulley (9) rotates and drives the detection assembly to rotate in the pipeline through the transmission assembly, and therefore the detection assembly detects the cracks on the inner wall of the pipeline.

2. The device for detecting pipeline cracks by using acoustic emission signals is characterized in that the driving assembly comprises a servo motor (2) installed on the transverse plate (1), a rotating shaft (3) connected with the output end of the servo motor (2), and a winding roller (4) fixedly installed on one end, away from the servo motor (2), of the rotating shaft (3), and the winding roller (4) is connected with the vertical plate (14) through a steel wire rope (15), one end of the steel wire rope (15) is fixedly connected with the winding roller (4) and wound on the winding roller (4), and the other end of the steel wire rope is fixedly connected with the vertical plate (14).

3. The device for detecting pipeline cracks by using acoustic emission signals according to claim 1, wherein the power assembly comprises an air cylinder (7), an electric telescopic rod or a hydraulic cylinder which is installed on the fixing plate (5), and a piston rod (8) of the air cylinder (7) is fixedly connected with the telescopic plate (6).

4. The device for detecting pipeline cracks by using acoustic emission signals is characterized in that the elastic assembly comprises a fixed cylinder (10) fixedly mounted at the side part of the expansion plate (6), a compression spring (11) arranged in the fixed cylinder (10) and an expansion rod (12) with one end connected with the compression spring (11), and the second pulley (13) is rotatably mounted at the other end of the expansion rod (12).

5. The device for detecting cracks in pipelines according to claim 4, wherein the detection assembly comprises a rotating shaft (16) rotatably mounted on the fixing plate (5), a fixing sleeve (17) fixedly mounted on the rotating shaft (16) through bolts, and a mounting plate (19) connected with the fixing sleeve (17) through a connecting plate (18), and the mounting plate (19) is mounted with a detector (20).

6. The device for detecting pipeline cracks according to claim 5, wherein the transmission assembly comprises a first bevel gear (21) fixedly mounted on one end of the rotating shaft (16) far away from the fixed sleeve (17), a second bevel gear (22) rotatably mounted on the vertical plate (14) and meshed with the first bevel gear (21), and a transmission belt (23) connecting the second bevel gear (22) and the first pulley (9).

7. The device for detecting pipeline cracks by using acoustic emission signals is characterized in that a balancing weight (24) is further fixedly arranged below the fixed plate (5) to increase the weight of the fixed plate (5) and the expansion plate (6), and a through groove for the rotating shaft (16) to pass through is formed in the expansion plate (6), so that the expansion plate (6) can be expanded and contracted normally when the air cylinder (7) works.

Technical Field

The invention relates to the technical field of pipeline detection equipment, in particular to a device for detecting pipeline cracks by using acoustic emission signals.

Background

Due to the rapid development of the production and manufacturing industry, in the production and manufacturing process, the pipeline plays an important role of a transmission medium, however, cracks are easy to generate on the inner wall of the pipeline along with the aging of the pipeline, and the crack detection work in the pipeline is indispensable for ensuring the normal operation of production, wherein, a reliable detection method is adopted when the acoustic emission signals are used for detection.

At present, when crack detection is performed on a pipeline, usually a detector is fixed at the tail end of a long rod by a detection person, and the detector is sent into the pipeline through the long rod, so that the detection of the pipeline is completed, and therefore, the workload is large, the working efficiency is low, and an ideal effect cannot be achieved generally in an actual detection process.

Disclosure of Invention

The present invention is directed to an apparatus for detecting cracks in a pipe by using an acoustic emission signal, so as to solve the above problems.

In order to achieve the purpose, the invention provides the following technical scheme:

an apparatus for acoustic emission signal detection of pipe cracks, the apparatus comprising: the device comprises a transverse plate, a fixed plate arranged below the transverse plate, a telescopic plate in sliding fit with the fixed plate, and a vertical plate fixedly arranged on the fixed plate, wherein the vertical plate is connected with a driving assembly arranged on the transverse plate;

the device for detecting the pipeline cracks by the acoustic emission signals further comprises a power assembly which is arranged on the fixed plate and connected with the telescopic plate, a first pulley is arranged at one end, far away from the telescopic plate, of the fixed plate, a second pulley is arranged on one side, far away from the fixed plate, of the telescopic plate through an elastic assembly, and when the power assembly works, the telescopic plate is driven to slide in the fixed plate so that the first pulley and the second pulley are in close contact with the inner wall of the pipeline;

the device for detecting the pipeline cracks by the acoustic emission signals further comprises a detection assembly mounted on the lower portion of the fixing plate, the detection assembly is connected with the first pulley through a transmission assembly mounted on the upper portion of the fixing plate, when the fixing plate and the expansion plate move downwards in the pipeline due to the operation of the driving assembly, the first pulley rotates, and the transmission assembly drives the detection assembly to rotate in the pipeline, so that the detection assembly detects the cracks on the inner wall of the pipeline.

As a further scheme of the invention: the driving assembly comprises a servo motor arranged on the transverse plate, a rotating shaft connected with the output end of the servo motor, and a winding roller fixedly arranged at one end of the rotating shaft far away from the servo motor, the winding roller is connected with the vertical plate through a steel wire rope, one end of the steel wire rope is fixedly connected with the winding roller and is wound on the winding roller, and the other end of the steel wire rope is fixedly connected with the vertical plate.

As a still further scheme of the invention: the power assembly comprises an air cylinder, an electric telescopic rod or a hydraulic cylinder which are arranged on the fixing plate, and a piston rod of the air cylinder is fixedly connected with the telescopic plate.

As a still further scheme of the invention: the elastic assembly comprises a fixed cylinder fixedly mounted on the side portion of the telescopic plate, a pressure spring arranged in the fixed cylinder, and a telescopic rod connected with one end of the pressure spring, and the second pulley is rotatably mounted at the other end of the telescopic rod.

As a still further scheme of the invention: the detection assembly is installed including rotating the axis of rotation on the fixed plate, through bolt fixed mounting in the epaxial fixed sleeve of axis of rotation, and through the connecting plate with the mounting panel that fixed sleeve connects, just install the detector on the mounting panel.

As a still further scheme of the invention: the transmission assembly comprises a first bevel gear fixedly mounted at one end, far away from the fixed sleeve, of the rotating shaft, a second bevel gear rotatably mounted on the vertical plate and meshed with the first bevel gear, and a transmission belt connecting the second bevel gear and the first pulley.

As a still further scheme of the invention: the below of fixed plate is the fixed balancing weight that is provided with still, in order to increase the fixed plate with the weight of expansion plate, just seted up the confession on the expansion plate the logical groove that the axis of rotation passed to make the cylinder during operation, the expansion plate can normally stretch out and draw back.

Compared with the prior art, the invention has the beneficial effects that: the invention has novel design, when in use, the fixed plate and the expansion plate are arranged in the pipeline, the transverse plate covers the pipe orifice, the power assembly works to drive the expansion plate to slide in the fixed plate, so that the first pulley and the second pulley are in close contact with the inner wall of the pipeline, when the driving assembly works in the forward direction, the fixed plate and the expansion plate move downwards in the pipeline, the first pulley rotates and drives the detection assembly to rotate in the pipeline through the transmission assembly, the detection assembly detects cracks on the inner wall of the pipeline, when the driving assembly works in the reverse direction, secondary detection can be carried out and the fixed plate and the expansion plate can be taken out of the pipeline, finally, the function of effectively and automatically detecting the cracks in the pipeline by the device is realized, and the efficiency of detecting the cracks in the pipeline is greatly improved.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of an apparatus for detecting pipeline cracks by using acoustic emission signals.

FIG. 2 is a partial schematic view of a stationary barrel in an embodiment of an apparatus for acoustic emission signal detection of pipe cracks.

FIG. 3 is a schematic view showing the connection state of the rotating shaft, the connecting plate and the mounting plate in an embodiment of the apparatus for detecting cracks in a pipeline by using an acoustic emission signal.

FIG. 4 is a schematic view showing the connection relationship between the fixed plate and the retractable plate in an embodiment of the apparatus for detecting pipeline cracks by using acoustic emission signals.

In the figure: 1-a transverse plate; 2-a servo motor; 3-a rotating shaft; 4-a winding roller; 5, fixing a plate; 6-a telescopic plate; 7-a cylinder; 8-a piston rod; 9-a first pulley; 10-a fixed cylinder; 11-a pressure spring; 12-a telescopic rod; 13-a second pulley; 14-a vertical plate; 15-steel wire rope; 16-a rotating shaft; 17-a fixed sleeve; 18-a connecting plate; 19-mounting a plate; 20-a detector; 21-a first bevel gear; 22-a second bevel gear; 23-a transmission belt; 24-balancing weight.

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.

In addition, an element of the present invention may be said to be "fixed" or "disposed" to another element, either directly on the other element or with intervening elements present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Referring to fig. 1 to 4, in an embodiment of the present invention, an apparatus for detecting pipeline cracks by using an acoustic emission signal includes: the device comprises a transverse plate 1, a fixed plate 5 arranged below the transverse plate 1, a telescopic plate 6 in sliding fit with the fixed plate 5, and a vertical plate 14 fixedly arranged on the fixed plate 5, wherein the vertical plate 14 is connected with a driving assembly arranged on the transverse plate 1;

the device for detecting the pipeline cracks by the acoustic emission signals further comprises a power assembly which is arranged on the fixed plate 5 and connected with the expansion plate 6, a first pulley 9 is arranged at one end, far away from the expansion plate 6, of the fixed plate 5, a second pulley 13 is arranged on one side, far away from the fixed plate 5, of the expansion plate 6 through an elastic assembly, and when the power assembly works, the expansion plate 6 is driven to slide in the fixed plate 5, so that the first pulley 9 and the second pulley 13 are in close contact with the inner wall of the pipeline;

the device for detecting the pipeline cracks by the acoustic emission signals further comprises a detection assembly mounted on the lower portion of the fixing plate 5, the detection assembly is connected with the first pulley 9 through a transmission assembly mounted on the upper portion of the fixing plate 5, when the fixing plate 5 and the expansion plate 6 move downwards in the pipeline due to the operation of the driving assembly, the first pulley 9 rotates, and the transmission assembly drives the detection assembly to rotate in the pipeline, so that the detection assembly detects the cracks on the inner wall of the pipeline.

In the embodiment of the invention, when the device is used, the fixed plate 5 and the expansion plate 6 are placed in a pipeline, the transverse plate 1 covers a pipe opening, the power assembly works to drive the expansion plate 6 to slide in the fixed plate 5, so that the first pulley 9 and the second pulley 13 are in close contact with the inner wall of the pipeline, when the driving assembly works in the forward direction, the fixed plate 5 and the expansion plate 6 move downwards in the pipeline, the first pulley 9 rotates and drives the detection assembly to rotate in the pipeline through the transmission assembly, the detection assembly detects cracks on the inner wall of the pipeline, when the driving assembly works in the reverse direction, secondary detection can be carried out, the fixed plate 5 and the expansion plate 6 can be taken out of the pipeline, and finally, the effective rotary automatic detection function of the cracks in the pipeline is realized.

As an embodiment of the present invention, the driving assembly includes a servo motor 2 installed on the horizontal plate 1, a rotating shaft 3 connected to an output end of the servo motor 2, and a winding roller 4 fixedly installed on one end of the rotating shaft 3 far away from the servo motor 2, the winding roller 4 is connected to the vertical plate 14 through a steel wire rope 15, one end of the steel wire rope 15 is fixedly connected to the winding roller 4 and wound on the winding roller 4, and the other end is fixedly connected to the vertical plate 14.

In the embodiment of the invention, when the servo motor 2 works in the forward direction, the rotating shaft 3 and the winding roller 4 are driven to rotate in the forward direction, so that the wire rope 15 is released by the winding roller 4, the fixed plate 5 and the expansion plate 6 move downwards in a pipeline, in the movement process, the first pulley 9 rotates and drives the detection assembly to move in the pipeline through the transmission assembly, and when the servo motor 2 works in the reverse direction, the wire rope 15 is wound by the winding roller 4, so that secondary detection is carried out, the fixed plate 5 and the expansion plate 6 are taken out of the pipeline, and therefore, the arrangement of the driving assembly ensures the normal operation of the detection work and provides effective power for the movement of other assemblies in the device.

As an embodiment of the present invention, the power assembly includes an air cylinder 7, an electric telescopic rod or a hydraulic cylinder mounted on the fixing plate 5, and a piston rod 8 of the air cylinder 7 is fixedly connected with the telescopic plate 6.

In the embodiment of the invention, when the caliber of the pipeline is larger, the cylinder 7 extends the piston rod 8, the expansion plate 6 moves towards the direction far away from the fixed plate 5, and the first pulley 9 and the second pulley 13 are in close contact with the inner wall of the pipeline through the elastic component, when the caliber of the pipeline is smaller, the cylinder 7 contracts the piston rod 8, and the expansion plate 6 moves towards the direction close to the fixed plate 5 until the first pulley 9 and the second pulley 13 are in close contact with the inner wall of the pipeline, so that the limitation on detection work caused by different calibers of the pipeline to be detected is effectively prevented.

As an embodiment of the present invention, the elastic assembly includes a fixed cylinder 10 fixedly installed at a side of the expansion plate 6, a compression spring 11 disposed in the fixed cylinder 10, and an expansion rod 12 having one end connected to the compression spring 11, and the second pulley 13 is rotatably installed at the other end of the expansion rod 12.

In the embodiment of the invention, when the cylinder 7 extends the piston rod 8, the expansion plate 6 moves towards the direction away from the fixed plate 5, so that the second pulley 13 is in close contact with the inner wall of the pipeline and compresses the pressure spring 11, the contact between the first pulley 9 and the inner wall of the pipeline is ensured, the first pulley 9 rotates in the downward movement process, and the detection assembly is driven to move through the transmission assembly.

As an embodiment of the present invention, the detecting assembly includes a rotating shaft 16 rotatably mounted on the fixing plate 5, a fixing sleeve 17 fixedly mounted on the rotating shaft 16 by a bolt, and a mounting plate 19 connected to the fixing sleeve 17 by a connecting plate 18, and a detector 20 is mounted on the mounting plate 19.

In the embodiment of the invention, when the driving assembly works in the forward direction, the fixed plate 5 and the expansion plate 6 move downwards in the pipeline, the first pulley 9 rotates, and the transmission assembly drives the rotating shaft 16 and the fixed sleeve 17 to rotate, so that the fixed sleeve 17 drives the mounting plate 19 and the detector 20 to rotate in the pipeline through the connecting plate 18, and the function of effectively and automatically detecting cracks in the pipeline by the device in a rotating mode is realized.

As an embodiment of the present invention, the transmission assembly comprises a first bevel gear 21 fixedly mounted on an end of the rotating shaft 16 far away from the fixed sleeve 17, a second bevel gear 22 rotatably mounted on the vertical plate 14 and engaged with the first bevel gear 21, and a transmission belt 23 connecting the second bevel gear 22 and the first pulley 9.

In the embodiment of the invention, when the first pulley 9 rotates, the second bevel gear 22 is driven to rotate by the transmission belt 23, and the second bevel gear 22 drives the first bevel gear 21 and the rotating shaft 16 to rotate, so that the detector 20 rotates in the pipeline in the process of up-and-down movement of the fixed plate 5 and the expansion plate 6 in the pipeline, and the rotary detection function of the device is realized.

As an embodiment of the present invention, a weight block 24 is further fixedly disposed below the fixed plate 5 to increase the weight of the fixed plate 5 and the expansion plate 6, and a through groove for the rotation shaft 16 to pass through is formed in the expansion plate 6, so that the expansion plate 6 can be expanded and contracted normally when the air cylinder 7 works.

In the embodiment of the invention, in the detection process, the arrangement of the balancing weight 24 ensures that the weight of the fixed plate 5 and the telescopic plate 6 is increased when the fixed plate 5 and the telescopic plate 6 move downwards, so that the first pulley 9 can rotate, and the arrangement of the through groove on the telescopic plate 6 ensures that the telescopic plate 6 can normally move when the cylinder 7 works.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.