An ultrasonic testing fixture for four-tube boiler piping

Abstract

This utility model discloses an ultrasonic testing fixture for a four-tube boiler pipeline, belonging to the field of pipeline inspection. The ultrasonic testing fixture for a four-tube boiler pipeline includes: an arc-shaped support; a mounting frame symmetrically arranged on the inner side of the arc-shaped support; a first electric telescopic rod symmetrically fixedly connected to the arc-shaped support, with its output end fixedly connected to the mounting frame; wheels symmetrically rotatably connected to the mounting frame; a first motor fixedly mounted on the mounting frame, with its output end fixedly connected to the wheels; a testing component mounted on the arc-shaped support; and a controller fixedly mounted on the top of the arc-shaped support. This utility model features a simple overall installation process, effectively improving the efficiency of pipeline inspection. Furthermore, it provides stability during circumferential movement on the pipeline, effectively enhancing the accuracy of pipeline inspection.

Description

Technical Field

[0001] This utility model relates to the field of pipeline inspection technology, and in particular to an ultrasonic inspection tool for a four-tube boiler pipeline. Background Technology

[0002] In the fields of energy production and industrial manufacturing, boilers, as crucial heat energy conversion equipment, are paramount in terms of operational safety and stability. The four main boiler tubes—water-cooled wall tubes, superheater tubes, reheater tubes, and economizer tubes—are critical components that operate under harsh conditions of high temperature, high pressure, and corrosion for extended periods. These conditions make them highly susceptible to defects such as wear, cracks, and corrosion, severely impacting the safe operation of the boiler and potentially leading to accidents. Therefore, regular, efficient, and accurate inspection of the four main boiler tubes to promptly identify and address potential defects is a key aspect of ensuring the safe and stable operation of the boiler.

[0003] When inspecting pipelines, manual handheld ultrasonic testing probes are often used for detection. This is inconvenient when inspecting large-diameter pipelines and is prone to missed detections.

[0004] In the prior art, patent application number CN202221331702.4, filed on 2022-05-31, discloses an ultrasonic testing fixture for weld seams of four major boiler pipes. The fixture includes a circumferential track for the tested pipe, an axial track for the tested pipe, a circumferential track motor, an axial track motor, a track connecting device, an ultrasonic testing probe, a connection device between the testing probe and the axial track, and the tested pipe. The circumferential track motor and the circumferential track cause the axial track to move circumferentially along the tested pipe, while the axial track motor and the axial track cause the ultrasonic probe to move axially along the tested pipe. This enables the ultrasonic testing probe to perform multi-directional testing of the weld seams of the pipe in both the axial and circumferential directions, ensuring the welding quality of the pipe.

[0005] The aforementioned patent can effectively inspect large-diameter pipes, but the installation process of the entire inspection fixture is quite complex. It involves magnetically connecting the pipe fitting to the pipe fitting through a pipe fitting fixing bracket, and then installing the circumferential track onto the pipe fitting fixing bracket. Furthermore, the magnetic connection method has poor stability and may affect the inspection accuracy. Utility Model Content

[0006] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide an ultrasonic testing fixture for a four-tube boiler pipeline that can overcome or at least partially solve the above problems.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] An ultrasonic testing fixture for a four-tube boiler pipeline includes: an arc-shaped support; a mounting frame symmetrically arranged on the inner side of the arc-shaped support; a first electric telescopic rod symmetrically and fixedly connected to the arc-shaped support, with its output end fixedly connected to the mounting frame; wheels symmetrically and rotatably connected to the mounting frame; a first motor fixedly mounted on the mounting frame, with its output end fixedly connected to the wheels; a testing component mounted on the arc-shaped support; and a controller fixedly mounted on the top of the arc-shaped support.

[0009] Preferably, the detection assembly includes a lead screw rotatably connected to an arc-shaped bracket, a second motor fixedly connected to one end of the arc-shaped bracket, the output end of the second motor fixedly connected to the lead screw, slide rods symmetrically fixedly connected to both sides of the arc-shaped bracket, a fixed plate fixedly connected between the ends of the two slide rods, and the fixed plate rotatably connected to the lead screw, a movable plate threadedly connected to the lead screw, the movable plate slidably connected to the slide rod, a mounting plate provided at the lower end of the movable plate, and a detection probe fixedly connected to the mounting plate.

[0010] To facilitate adjustment of the detection probe's position, a second electric telescopic rod is fixedly connected between the moving plate and the mounting plate.

[0011] To prevent missed detection areas, preferably, a positioner is provided at the upper end of the controller.

[0012] To facilitate adjustment of the detection probe's position, a distance sensor is further fixedly connected to the lower side of the mounting plate.

[0013] To prevent the wheels from slipping on the pipes, a friction sleeve is further provided on the outer side of the wheels.

[0014] Compared with the prior art, this utility model provides an ultrasonic testing fixture for four-tube boiler piping, which has the following advantages:

[0015] 1. This ultrasonic testing fixture for boiler four-tube pipelines allows the operator to place the arc-shaped bracket in the installation area of ​​the pipeline to be tested according to the testing position. Then, the first electric telescopic rod is activated, slowly extending until the mounting bracket, driven by the traveling wheels, grips the pipeline. The first electric telescopic rod is then stopped extending. During the actual testing process, the first motor drives the traveling wheels to rotate, and the fixture moves circumferentially along the pipeline surface. During this movement, the operator can activate the second motor, which drives the lead screw to rotate. The lead screw drives the moving plate to move left and right along the sliding rod, thereby adjusting the position of the testing probe to achieve testing of different parts of the pipeline. Simultaneously, the position of the testing probe can be adjusted via the second electric telescopic rod. The overall installation steps of the fixture are simple, effectively improving the efficiency of pipeline testing. Furthermore, its stable circumferential movement on the pipeline effectively improves the accuracy of pipeline testing.

[0016] 2. This ultrasonic testing fixture for boiler four-pipe piping uses a positioner to obtain the rotation position of the arc-shaped support in real time, thereby preventing omissions.

[0017] 3. This ultrasonic testing fixture for boiler four-pipe pipelines uses a distance sensor to accurately detect when the probe reaches a designated position, improving the efficiency and accuracy of pipeline testing.

[0018] The parts of this device not covered herein are the same as or can be implemented using existing technologies. The overall tooling installation steps of this utility model are simple, which can effectively improve the efficiency of pipeline inspection. At the same time, it is relatively stable when moving circumferentially on the pipeline, which effectively improves the accuracy of pipeline inspection. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the ultrasonic testing fixture for a four-tube boiler, as proposed in this utility model, under testing conditions.

[0020] Figure 2 This is a schematic diagram of the structure of an ultrasonic testing fixture for a four-tube boiler pipe proposed in this utility model;

[0021] Figure 3 This utility model proposes an ultrasonic testing fixture for four-tube boiler piping. Figure 2 Enlarged view of point A in the middle;

[0022] Figure 4 This utility model proposes an ultrasonic testing fixture for four-tube boiler piping. Figure 2 Enlarged diagram of point B in the middle.

[0023] In the diagram: 1. Arc-shaped bracket; 101. First electric telescopic rod; 102. Mounting frame; 103. Traveling wheel; 104. First motor; 105. Friction sleeve; 2. Lead screw; 201. Second motor; 202. Slide rod; 203. Fixed plate; 204. Moving plate; 205. Second electric telescopic rod; 206. Mounting plate; 207. Detection probe; 208. Distance sensor; 3. Controller; 301. Positioner. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] Example 1: Refer to Figures 1-4 An ultrasonic testing fixture for a four-pipe boiler includes: an arc-shaped support 1; a mounting frame 102 symmetrically arranged on the inner side of the arc-shaped support 1; a first electric telescopic rod 101 symmetrically fixedly connected to the arc-shaped support 1, with its output end fixedly connected to the mounting frame 102; a traveling wheel 103 symmetrically rotatably connected to the mounting frame 102; a first motor 104 fixedly mounted on the mounting frame 102, with its output end fixedly connected to the traveling wheel 103; a testing component mounted on the arc-shaped support 1; and a controller 3 fixedly mounted on the top of the arc-shaped support 1.

[0026] The detection assembly includes a lead screw 2 rotatably connected to an arc-shaped bracket 1. A second motor 201 is fixedly connected to one end of the arc-shaped bracket 1, and the output end of the second motor 201 is fixedly connected to the lead screw 2. Slide rods 202 are symmetrically fixedly connected to both sides of the arc-shaped bracket 1. A fixing plate 203 is fixedly connected between the ends of the two slide rods 202, and the fixing plate 203 is rotatably connected to the lead screw 2. A movable plate 204 is threadedly connected to the lead screw 2, and the movable plate 204 is slidably connected to the slide rods 202. A mounting plate 206 is provided at the lower end of the movable plate 204, and a detection probe 207 is fixedly connected to the mounting plate 206.

[0027] A second electric telescopic rod 205 is fixedly connected between the movable plate 204 and the mounting plate 206.

[0028] When performing ultrasonic testing on the four-tube boiler piping, the operator places the arc-shaped bracket 1 in the installation area of ​​the pipe to be tested according to the testing position. Then, the first electric telescopic rod 101 is activated, and the first electric telescopic rod 101 slowly extends, allowing the mounting frame 102 to drive the traveling wheels 103 to grip the pipe. Then, the first electric telescopic rod 101 is stopped extending. During the actual testing process, the first motor 104 drives the traveling wheels 103 to rotate, and the fixture moves circumferentially along the surface of the pipe. During the movement, the operator can activate the second motor 201, which drives the lead screw 2 to rotate. The lead screw 2 drives the moving plate 204 to move left and right along the slide rod 202, thereby adjusting the position of the testing probe 207 to achieve testing of different parts of the pipe. At the same time, the position of the testing probe 207 can be adjusted by the second electric telescopic rod 205. The overall fixture installation steps are simple, which can effectively improve the testing efficiency of the pipe. At the same time, it is relatively stable when moving circumferentially on the pipe, which can effectively improve the accuracy of the pipe testing.

[0029] Example 2: Refer to Figures 1-4 An ultrasonic testing fixture for a four-tube boiler is basically the same as in Example 1, except that a positioner 301 is provided on the upper end of the controller 3.

[0030] The position of the arc-shaped bracket 1 is obtained in real time by the positioner 301, thereby preventing any omissions.

[0031] A distance sensor 208 is fixedly connected to the lower side of the mounting plate 206.

[0032] The distance sensor 208 can accurately detect when the probe 207 reaches the designated position, thereby improving the efficiency and accuracy of pipeline inspection.

[0033] Friction sleeves 105 are provided on the outer side of the traveling wheel 103.

[0034] By setting the friction sleeve 105, the friction between the traveling wheel 103 and the pipe can be increased, which makes it easier for the traveling wheel 103 to move stably in a circular motion on the pipe and prevents it from slipping.

[0035] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An ultrasonic testing tool for a boiler four-pipe run, comprising: The arc-shaped support (1) is characterized in that it further includes: Mounting bracket (102) is symmetrically arranged on the inner side of the arc-shaped bracket (1); The first electric telescopic rod (101) is symmetrically fixedly connected to the arc-shaped bracket (1), and the output end of the first electric telescopic rod (101) is fixedly connected to the mounting bracket (102); The traveling wheels (103) are symmetrically rotatably connected to the mounting frame (102); The first motor (104) is fixedly mounted on the mounting bracket (102), and the output end of the first motor (104) is fixedly connected to the walking wheel (103); The detection component is mounted on the arc-shaped bracket (1); The controller (3) is fixedly mounted on the top of the arc-shaped bracket (1).

2. The ultrasonic testing tool for the four-tube line of a boiler according to claim 1, wherein The detection assembly includes a lead screw (2) rotatably connected to an arc-shaped bracket (1). A second motor (201) is fixedly connected to one end of the arc-shaped bracket (1). The output end of the second motor (201) is fixedly connected to the lead screw (2). Slide rods (202) are symmetrically fixedly connected to both sides of the arc-shaped bracket (1). A fixing plate (203) is fixedly connected between the ends of the two slide rods (202). The fixing plate (203) is rotatably connected to the lead screw (2). A moving plate (204) is threaded onto the lead screw (2). The moving plate (204) is slidably connected to the slide rod (202). An mounting plate (206) is provided at the lower end of the moving plate (204). A detection probe (207) is fixedly connected to the mounting plate (206).

3. The ultrasonic testing tool for a boiler four-tube run according to claim 2, wherein A second electric telescopic rod (205) is fixedly connected between the movable plate (204) and the mounting plate (206).

4. The ultrasonic testing tool for a boiler four-tube run according to claim 1, wherein The controller (3) is equipped with a positioner (301) at its upper end.

5. The ultrasonic testing tool for a boiler four-tube run according to claim 3, wherein A distance sensor (208) is fixedly connected to the lower side of the mounting plate (206).

6. The ultrasonic testing tool for boiler four-tube piping according to claim 1, wherein The outer side of the walking wheel (103) is provided with a friction sleeve (105).

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