Steam pipeline welding seam quality nondestructive testing device

Abstract

The utility model provides a steam pipeline welding seam quality nondestructive testing device, which belongs to the technical field of pipeline detection, aims to solve the problems that the adaptability with a pipeline is poor, the influence of high temperature is caused, the performance of a coupling agent is changed, the ultrasonic detection signal quality cannot be guaranteed, and a detection probe is troublesome to mount and replace, and comprises a detection ring sleeve, coupling agent storage boxes are symmetrically installed on the tops of the left and right outer side walls of the detection ring sleeve, a rolling shaft is rotationally connected into the inner side wall of the detection ring sleeve, a detection probe is inserted into the middle of the top of the detection ring sleeve, and combined ring sleeves are connected to the bottoms of the left and right sides of the detection ring sleeve and rotationally connected with sliding shafts. Left and right ends of the top of the combined ring sleeve are rubber products; the detection probe of the steam pipeline welding seam quality nondestructive detection device adopts a magnetic insertion block fixing mode, compared with a traditional bolt fixing mode, rapid replacement of the detection probe is achieved, different detection key requirements are met, and the ultrasonic detection unit and the infrared thermal imaging detection unit integrated at the bottom of the probe complement each other.

Description

Technical Field

[0001] This utility model relates to the field of pipeline inspection technology, and in particular to a non-destructive testing device for the quality of steam pipeline welds. Background Technology

[0002] Steam pipelines are widely used in industrial production, and the quality of their welds directly affects the safe operation of the entire pipeline system. Because steam pipelines typically operate in high-temperature, high-pressure environments, defects in the welds, such as lack of fusion, porosity, or cracks, can easily lead to steam leaks. This not only wastes energy but can also cause serious safety accidents, endangering personnel and production equipment. Existing non-destructive testing devices for steam pipeline weld quality use only simple fixed structures, which cannot be flexibly adjusted according to pipe diameter or tightly fitted to the pipe wall, thus failing to guarantee testing accuracy. Furthermore, because steam pipelines are usually under high-temperature, high-pressure conditions, the physical properties of conventional coupling agents easily change under these conditions, such as abnormal viscosity and flowability, failing to provide good acoustic transmission conditions for ultrasonic testing and significantly affecting the quality of the detection signal. Traditional probe fixing methods, such as bolt fixing, are complex and time-consuming. When probe replacement is needed based on different testing priorities, it consumes a significant amount of manpower and time, severely impacting testing efficiency. Utility Model Content

[0003] The purpose of this invention is to provide a non-destructive testing device for the quality of steam pipeline welds, in order to solve the problems mentioned in the background art, such as poor compatibility with pipelines, cumbersome installation, insufficient stability, inaccurate data due to easy shaking and deviation during testing, changes in the performance of the coupling agent due to the high temperature of the steam pipeline, which cannot provide good acoustic transmission conditions for ultrasonic testing and affect the quality of the detection signal, inconvenient installation and replacement of the detection probe, and complicated and time-consuming operation using traditional methods such as bolt fixing, which hinders the improvement of detection efficiency.

[0004] The purpose and effectiveness of this utility model's non-destructive testing device for steam pipeline weld quality are achieved through the following specific technical means:

[0005] A non-destructive testing device for the quality of steam pipeline welds, comprising a testing ring; couplant storage tanks are symmetrically installed on the top of the left and right outer walls of the testing ring; a rolling shaft is rotatably connected to the inner wall of the testing ring; a testing probe is inserted into the middle of the top of the testing ring; combined rings are connected to the bottom of the left and right sides of the testing ring; sliding shafts are rotatably connected to the combined rings; and the tops of the left and right ends of the combined rings are made of rubber.

[0006] Furthermore, a hollow slot is provided at the top center of the detection ring, and three rolling shafts are rotatably connected to the inner sidewalls of the detection ring on both sides of the hollow slot. Temperature sensors are fixedly installed on the inner sidewalls of the detection ring between adjacent rolling shafts, and the temperature sensors are wirelessly connected to an external temperature control panel.

[0007] Furthermore, connecting brackets are fixedly installed on both the front and rear sides of the hollow slot of the detection ring. Two circular holes are symmetrically opened in the connecting brackets, and two inclined scraping plates are symmetrically installed in the middle of the hollow slot. The bottom of the opposite sidewalls of the two scraping plates are inclined.

[0008] Furthermore, the detection probe is inserted between two connecting brackets at the top of the detection ring. Holes corresponding to the circular holes on the connecting brackets are opened in the front and rear side walls of the detection probe. Magnetic inserts that pass through the circular holes are inserted into the holes. The bottom of the detection probe is inserted between two scraping plates inside the hollow slot at the top of the detection ring. An ultrasonic detection unit is fixedly installed at the middle of the bottom of the detection probe. Infrared thermal imaging detection units are fixedly installed in the bottom end faces of the detection probe on both the front and rear sides of the ultrasonic detection unit.

[0009] Furthermore, the interior of the coupling agent storage tank is equipped with a heating pipe and a liquid supply pump. The liquid supply pump is connected to the coupling agent spraying pipe on the upper side of the coupling agent storage tank. The end of the coupling agent spraying pipe is an "E"-shaped tube head and is installed on the outside of the scraper plate inside the hollow slot at the top of the detection ring.

[0010] Furthermore, the bottom of the left and right sides of the detection ring is provided with connecting grooves on both the front and back sides, the top left and right sides of the combined ring are connected to the connecting grooves, and a control handle is fixedly connected to the middle of the bottom right side wall of the detection ring.

[0011] This utility model provides a non-destructive testing device for the quality of steam pipeline welds, which has the following beneficial effects:

[0012] 1. The detection ring is tightly fitted to the outer wall of the steam pipe. Combined with the ring, sliding shaft, and rolling shaft, it is not only easy to install and can be flexibly adjusted according to different pipe diameters to meet diverse testing needs, but also greatly enhances the stability of the device during testing, effectively preventing shaking or displacement and ensuring the reliability of the test data. Through the linkage between the temperature sensor and the temperature control panel, as well as the coordinated work of the heating tube and the supply pump in the coupling agent storage tank, the temperature of the coupling agent can be precisely adjusted, overcoming the influence of the high-temperature environment of the steam pipe on the performance of the coupling agent, creating good acoustic transmission conditions for ultrasonic testing, and ensuring the quality of the test signal.

[0013] 2. The detection probe adopts a magnetic plug fixing method, which enables rapid replacement of the detection probe compared to the traditional bolt fixing, meeting the needs of different detection priorities. The ultrasonic detection unit integrated at the bottom of the probe complements the infrared thermal imaging detection unit. On the one hand, ultrasonic flaw detection accurately locates internal defects such as cracks, porosity, and lack of fusion in the weld. On the other hand, by capturing thermal radiation information, it analyzes temperature differences to determine the abnormal heat transfer caused by internal defects. The two complement each other, comprehensively improving the accuracy of weld quality assessment. The setting of the couplant plate ensures that the coupling agent evenly covers the ultrasonic detection area, optimizing the acoustic environment and providing strong support for accurate detection. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the right front side axial view structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the overall disassembled structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the cross-sectional structure of the detection ring of this utility model;

[0017] Figure 4 This is a bottom view of the bottom structure of the detection ring of this utility model;

[0018] Figure 5 This is a schematic diagram of the half-section structure of the detection ring of this utility model;

[0019] Figure 6 This is a cross-sectional schematic diagram of the detection ring and combined ring of this utility model.

[0020] In the diagram, the correspondence between component names and drawing numbers is as follows:

[0021] 1. Detection ring; 101. Hollow slot; 102. Connecting bracket; 103. Scraper; 104. Temperature sensor; 105. Connecting groove; 106. Control handle; 2. Rolling shaft; 3. Coupling agent storage tank; 301. Coupling agent spraying pipe; 4. Detection probe; 401. Ultrasonic detection unit; 402. Infrared thermal imaging detection unit; 5. Combined ring; 6. Sliding shaft; 7. Magnetic insert. Detailed Implementation

[0022] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples.

[0023] Example 1:

[0024] As attached Figure 1 To be continued Figure 6 As shown:

[0025] This utility model provides a non-destructive testing device for the quality of steam pipeline welds, comprising: a testing ring 1, with coupling agent storage tanks symmetrically installed on the top of the left and right outer walls of the testing ring 1; a rolling shaft 2 rotatably connected to the inner wall of the testing ring 1; a testing probe 4 inserted into the middle of the top of the testing ring 1; combined rings 5 ​​connected to the bottom of the left and right sides of the testing ring 1; a sliding shaft 6 rotatably connected to the combined rings 5; the tops of the left and right ends of the combined rings 5 ​​are made of rubber; a hollow slot 101 is formed in the middle of the top of the testing ring 1; three rolling shafts 2 are rotatably connected to the inner walls of the testing rings 1 on the left and right sides of the hollow slot 101; and temperature sensors 104 are fixedly installed on the inner walls of the testing rings 1 between adjacent rolling shafts 2. The temperature sensor 104 is wirelessly connected to the external temperature control panel. Connecting slots 105 are provided on the front and back sides of the bottom of the left and right sides of the detection ring 1. The top left and right sides of the combined ring 5 are connected to the connecting slots 105. A control handle 106 is fixedly connected to the middle of the bottom right side wall of the detection ring 1. Specifically, the detection ring 1 has a ring-shaped design, which can tightly fit the outer wall of the steam pipe, ensuring the stability of the detection process. The combined ring 5 is connected to the bottom left and right sides of the detection ring 1. The connecting slots 105 on the bottom left and right sides of the detection ring 1 are connected to the combined ring 5. The top left and right ends of the combined ring 5 are made of rubber, giving the top left and right ends of the combined ring 5 a certain degree of elasticity and extensibility. Therefore, when facing the detection ring... When used in combination with the combination ring 5 and installed on the outer wall of the pipe, it can better fit the outer wall of the pipe. For steam pipes with slightly different diameters, the rubber part can adaptively fine-tune the tightness, improving the versatility of the device and adapting to the inspection of steam pipes of different specifications to meet diverse inspection needs. A sliding shaft 6 is rotatably connected to the combination ring 5, and a rolling shaft 2 is rotatably connected to the inner wall of the inspection ring 1. During the inspection process, the combination ring 5 and the inspection ring 1 together encircle the steam pipe. The rolling shaft 2 and the sliding shaft 6 contact the outer wall of the pipe, providing auxiliary support and stabilizing the inspection device, ensuring that the inspection ring 1 does not shake or shift during sliding. Furthermore, the temperature sensor 104 installed on the inner wall of the inspection ring 1 monitors the temperature in real time. The surface temperature of the steam pipeline is measured and transmitted to the temperature control panel. Based on the received temperature information, the temperature control panel automatically controls the heating element and liquid supply pump in the coupling agent storage tank 3 to achieve precise temperature regulation of the coupling agent, ensuring that the coupling agent is always in optimal working condition to adapt to the high-temperature environment of the steam pipeline and guarantee the accuracy of ultrasonic testing. Simultaneously, a control handle 106 is fixedly connected to the middle of the bottom right side wall of the testing ring 1. By holding the control handle 106, the operator can easily control the entire testing device to rotate around the pipeline, making the testing process more flexible and efficient. The operator can flexibly adjust the rotation speed and direction of the testing device at any time according to the actual testing conditions, such as the pipeline installation environment, the specific location and shape of the weld, etc.It allows for more detailed and focused inspection of specific areas. When encountering obstacles or complex welds on pipelines, manual operation can promptly avoid obstacles and conduct a comprehensive inspection of the welds. Secondly, it enables precise control; operators, relying on their experience and feel, can accurately position the inspection probe 4 to the weld to be inspected, avoiding positioning deviations that may occur with automated inspection, thereby improving the accuracy of the inspection results. Furthermore, manual operation eliminates the need for complex automatic drive systems and control programs, reducing equipment costs and maintenance difficulty. In cost-sensitive scenarios or relatively simple inspection environments, it offers high practicality and economy.

[0026] The coupling agent storage tank 3 is equipped with a heating pipe and a liquid supply pump. Both the heating pipe and the liquid supply pump inside the coupling agent storage tank 3 are wirelessly connected to an external temperature control panel. The liquid supply pump is connected to the coupling agent spraying pipe 301 on the upper side of the coupling agent storage tank 3. The end of the coupling agent spraying pipe 301 is an "E"-shaped tube head and is installed on the outside of the scraper 103 inside the hollow slot 101 at the top of the detection ring 1. Specifically, since steam pipes are usually in a high-temperature environment, the performance of the coupling agent is easily affected by temperature. The function of the heating pipe is to heat the coupling agent to a certain temperature according to the instructions of the temperature control panel. A suitable temperature ensures that the coupling agent maintains good coupling effect during high-temperature steam pipeline testing, guaranteeing effective transmission of ultrasonic testing signals. The liquid supply pump is responsible for extracting the coupling agent and delivering it to the testing site through the coupling agent spray pipe 301 connected to it. The end of the coupling agent spray pipe 301 is an "E"-shaped tube head and is installed on the outside of the scraper plate 103 inside the hollow slot 101 at the top of the testing ring 1. This special design enables the coupling agent to be sprayed evenly and accurately at the contact area between the ultrasonic testing unit 401 and the pipeline weld, providing good acoustic conduction conditions for ultrasonic testing.

[0027] The detection ring 1 has connecting brackets 102 fixedly installed on both the front and rear sides of the hollow slot 101. Two circular holes are symmetrically opened in the connecting brackets 102. Two inclined scraping plates 103 are symmetrically installed in the middle of the hollow slot 101. The bottom of the opposite sidewalls of the two scraping plates 103 are inclined. Specifically, when the coupling agent is sprayed from the coupling agent spray pipe 301 to the weld seam of the pipe, the scraping plates 103 can evenly scrape the coupling agent on the area below and around the ultrasonic detection unit 401, ensuring the uniformity of the coupling agent coverage and avoiding the accumulation or incomplete coverage of the coupling agent, thereby optimizing the acoustic environment of ultrasonic detection and improving the quality of the detection signal.

[0028] The detection probe 4 is inserted between two connecting brackets 102 at the top of the detection ring 1. Holes corresponding to the circular holes on the connecting brackets 102 are formed in the front and rear side walls of the detection probe 4. Magnetic inserts 7, passing through the circular holes, are inserted into these holes. The bottom of the detection probe 4 is inserted between two scraping plates 103 inside the hollow slot 101 at the top of the detection ring 1. An ultrasonic detection unit 401 is fixedly installed at the center of the bottom of the detection probe 4. Infrared thermal imaging detection units 402 are fixedly installed on the bottom end faces of the detection probe 4 on both the front and rear sides of the ultrasonic detection unit 401. Specifically, the magnetic inserts 7 are inserted into the circular holes of the connecting brackets 102 and the holes of the detection probe 4, ensuring that the detection probe 4 can be stably... The ultrasonic testing unit 401, which is fixedly installed on the testing ring 1, is more convenient and faster than traditional bolt fixing methods. The ultrasonic testing unit 401, which is fixedly installed at the bottom center of the testing probe 4, uses the ultrasonic principle to perform flaw detection on the inside of the weld. It can accurately detect defects such as cracks, porosity, and lack of fusion inside the weld. The infrared thermal imaging testing unit 402 is fixedly installed on the bottom end face of the testing probe 4 on both sides of the ultrasonic testing unit 401. It can capture the thermal radiation information of the weld area, analyze the temperature distribution difference, and determine whether there is abnormal heat transfer caused by internal defects. It provides supplementary information for weld quality assessment and complements ultrasonic testing to further improve the accuracy and reliability of the test.

[0029] The specific usage and function of this embodiment are as follows:

[0030] When using this non-destructive testing device for steam pipe weld quality, first connect the bottom right end of the testing ring 1 to the top right end of the combined ring 5, then attach the whole device to the outside of the steam pipe. Next, connect the top left end of the combined ring 5 to the bottom left end of the testing ring 1 to fix it to the outside of the steam pipe. At this time, both the rolling shaft 2 and the sliding shaft 6 are in contact with the outer wall of the pipe. Then, the temperature control panel automatically controls the heating tube in the coupling agent storage tank 3 to work based on the real-time feedback of the steam pipe surface temperature data from the temperature sensor 104 on the inner wall of the testing ring 1. When the pipe surface temperature is detected to be high, the heating tube starts to heat the coupling agent to a temperature range suitable for the high-temperature environment. Conversely, if the pipe surface temperature is low, the heating tube stops heating to ensure that the physical properties of the coupling agent match the current high-temperature conditions of the steam pipe and to ensure the ultrasonic testing signal. To ensure effective transmission, the supply pump in the coupling agent storage tank 3 is activated, drawing out the coupling agent and delivering it to the detection area through the coupling agent spray pipe 301. The "E"-shaped end of the coupling agent spray pipe 301 is installed on the outside of the scraper 103 inside the hollow slot 101, allowing the coupling agent to be evenly sprayed on the contact area between the ultrasonic detection unit 401 and the pipe weld. Then, the detection ring 1 is slowly rotated around the steam pipe weld by the control handle 106. The ultrasonic detection unit 401 in the detection probe 4 uses the reflection and refraction characteristics of ultrasonic waves inside the weld to perform flaw detection inside the weld. The infrared thermal imaging detection unit 402 captures the thermal radiation information of the weld area, analyzes the temperature distribution differences, and determines whether there is abnormal heat transfer caused by internal defects. Similarly, the thermal imaging data is transmitted to the data analysis system.

[0031] Example 2:

[0032] The detection probe 4 is designed as a modular structure. In addition to the existing ultrasonic detection unit 401 and infrared thermal imaging detection unit 402, multiple standard interfaces are reserved to facilitate the insertion of other types of detection modules according to different detection needs, such as a laser-induced breakdown spectroscopy detection module, which is used to analyze the elemental composition of the weld and determine whether the welding material meets the requirements.

Claims

1. A device for non-destructive testing of the quality of a weld in a steam pipe, characterized in that: The coupling agent storage tank (3) is symmetrically arranged on the top of the left and right outer side walls of the detection ring sleeve (1), and is internally provided with a heating pipe and a liquid supply pump connected with a coupling agent spraying pipe (301) on the upper side of the coupling agent storage tank (3). The end of the coupling agent spraying pipe (301) is an "E"-shaped pipe head, which is installed outside the doctor blade (103) in the hollow slot hole (101) on the top of the detection ring sleeve (1). The inner side wall of the detection ring sleeve (1) is rotatably connected with a rolling shaft (2). A detection probe (4) is inserted into the middle position of the top of the detection ring sleeve (1), and the detection probe (4) is located between the two connecting supports (102) on the top of the detection ring sleeve (1). The front and rear side walls of the detection probe (4) are provided with cavities corresponding to the round holes in the connecting supports (102), and the cavities are inserted with magnetic inserts (7) passing through the round holes. The left and right bottom parts of the detection ring sleeve (1) are connected with a combined ring sleeve (5), and the combined ring sleeve (5) is rotatably connected with a sliding shaft (6). The left and right ends of the top of the combined ring sleeve (5) are made of rubber products. The front and rear sides of the bottom of the detection ring sleeve (1) are provided with connecting hanging grooves (105), and the top of the combined ring sleeve (5) is connected to the connecting hanging grooves (105). The right side wall of the bottom of the detection ring sleeve (1) is fixedly connected with a control handle (106).

2. A device for non-destructive testing of the quality of a steam pipe weld according to claim 1, characterized in that: The top of the detection ring sleeve (1) is provided with a hollow slot hole (101), and the inner side walls of the left and right sides of the hollow slot hole (101) are rotatably connected with three rolling shafts (2), respectively.

3. A device for non-destructive testing of the quality of a steam pipe weld according to claim 1, characterized in that: The front and rear sides of the hollow slot hole (101) of the detection ring sleeve (1) are fixedly installed with connecting supports (102), and the connecting supports (102) are symmetrically provided with two round holes.

4. The apparatus for non-destructive testing of steam pipe weld quality according to claim 1, characterized in that: The bottom of the detection probe (4) is inserted between the two doctor blades (103) in the hollow slot hole (101) on the top of the detection ring sleeve (1), and the bottom of the detection probe (4) is fixedly installed with an ultrasonic detection unit (401). The front and rear sides of the bottom of the detection probe (4) are fixedly installed with infrared thermal imaging detection units (402).

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