Nondestructive testing device for boiler pressure pipeline

Abstract

The utility model relates to the technical field of special equipment detection, and discloses a nondestructive testing device for a boiler pressure pipeline, which comprises a fixing clamp and an X-ray flaw detector, and the fixing clamp comprises a flaw detector collet and a pipeline collet; the flaw detection machine collet chuck comprises a first semi-cylindrical collet chuck and a second semi-cylindrical collet chuck; the pipeline collet comprises a third semicircular collet and a fourth semicircular collet, a first arc-shaped groove is formed in the outer wall of the third semicircular collet, a second arc-shaped groove is formed in the outer wall of the fourth semicircular collet, and the first arc-shaped groove and the second arc-shaped groove are combined end to end to form an annular sliding groove; a sliding connecting piece is arranged on the first semicircular cylinder clamp; a positioning hole is formed in the groove wall of the sliding groove, a blind hole is formed in the sliding connecting piece, a plug pin is arranged in the positioning hole in a sliding mode, and the plug pin can be inserted into the positioning hole and the blind hole at the same time. The pipeline detection device can solve the problems that when an existing detection device is used for detecting the outer side of the circumference of a pipeline in different directions, the device needs to be disassembled and installed repeatedly, use and operation are tedious, and detection efficiency is affected.

Description

Technical Field

[0001] This utility model relates to the field of special equipment testing technology, specifically to a non-destructive testing device for boiler pressure pipelines. Background Technology

[0002] Boiler pressure pipelines operate under extremely harsh conditions. Regardless of the quality of the pipelines, some quality defects are inevitable during application. If these defects are not detected and properly handled in a timely manner, they can easily lead to production accidents, thereby affecting enterprise production and personnel safety. Therefore, it is very important to inspect boiler pressure pipelines.

[0003] The inspection of boiler pressure pipelines generally employs non-destructive testing (NDT). NDT is a technique for inspecting materials, components, and structures without damaging or affecting the performance of the pipeline. It is primarily used to examine internal or surface defects in materials, such as cracks, pores, and inclusions, as well as to assess the physical properties of materials, such as thickness and hardness. For boiler pressure pipelines, regular NDT is a crucial measure to ensure their safe operation. Various methods exist for NDT of boiler pipelines, such as ultrasonic testing, X-ray inspection, magnetic particle testing, and penetrant testing. Among these, X-ray inspection is widely used due to its advantages of strong penetrating power, intuitive imaging, and high accuracy.

[0004] Currently, X-ray flaw detectors are primarily used for non-destructive testing of boiler pressure pipelines. Because of the radiation exposure, personnel must leave the site and move away from the equipment during X-ray inspection. Therefore, the flaw detector must be securely mounted on the pipeline before leaving the site. The current methods for securing the flaw detector mainly include... Figure 1 and Figure 2 The fixing clamp shown in the figure includes a flaw detector clamp and a pipe clamp that are fixedly connected. The flaw detector clamp is used to hold and fix the flaw detector, while the pipe clamp is used to hold and fix the pipe to be tested, so that the flaw detector can perform stable testing on the part of the pipe to be tested.

[0005] However, in actual testing, since both the flaw detector clamp and the pipe clamp are formed by two hinged, flip-open semi-cylinders, bolts are generally used to lock the free ends of the two semi-cylinders together to ensure their relative fixation when fixing the flaw detector and the pipe. This ensures that the flaw detector and the pipe can be stably clamped and fixed. As a result, when it is necessary to inspect the pipe from other directions outside the circumference of the pipe, the bolts on the flaw detector clamp and the pipe clamp must be loosened, the device and the flaw detector must be removed as a whole, the position and orientation of the device must be adjusted, and then the device and the flaw detector must be reinstalled and fixed on the pipe. This operation is very cumbersome and affects the efficiency of the testing work. Utility Model Content

[0006] The present invention aims to provide a non-destructive testing device for boiler pressure pipelines, in order to solve the problem that when using existing testing devices to test different directions on the outer circumference of the pipeline, it is necessary to repeatedly disassemble and reassemble the device, which is cumbersome to use and affects the testing efficiency.

[0007] To achieve the above objectives, this utility model adopts the following technical solution: a non-destructive testing device for boiler pressure pipelines, comprising a fixing clamp and an X-ray flaw detector. The fixing clamp includes a flaw detector clamp for fixing the X-ray flaw detector and a pipeline clamp for fixing the pipeline. The X-ray flaw detector is clamped and fixed in the flaw detector clamp. The flaw detector clamp includes a first semi-cylindrical clamp and a second semi-cylindrical clamp, which are hinged at one end and detachably connected at the other end. The pipeline clamp includes a third semi-cylindrical clamp and a fourth semi-cylindrical clamp, which are hinged at one end and detachably connected at the other end. The first and second semi-cylindrical clamps, and the third and fourth semi-cylindrical clamps are connected together. The cylindrical clamps can be assembled to form a cylindrical shape. The outer wall of the third semi-cylindrical clamp has a first arc-shaped groove, and the outer wall of the fourth semi-cylindrical clamp has a second arc-shaped groove. The first and second arc-shaped grooves are combined end to end to form an annular sliding groove. The first semi-cylindrical clamp has a sliding connector that is locked in the sliding groove and can slide along the groove. The groove wall has a positioning hole with the axis of the positioning hole parallel to the axis of the pipe clamp. The sliding connector has a blind hole that can be aligned with the positioning hole. The axes of both the positioning hole and the blind hole are parallel to the axis of the pipe clamp. A pin is slidably installed in the positioning hole, and the pin can be inserted into both the positioning hole and the blind hole simultaneously.

[0008] The principle and advantages of this solution are as follows: Because the outer wall of the pipe clamp has an annular groove, and the flaw detector clamp is slidably connected to the groove via a sliding connector, when inspecting the pipe from other directions outside the pipe circumference, it is only necessary to slide the flaw detector and its clamp along the groove on the pipe clamp surface, without having to disassemble and reinstall the entire device. This makes adjustment and operation simpler and more convenient, and improves inspection efficiency. Simultaneously, the positioning connection between the positioning hole and the blind hole via a pin allows for locking the flaw detector in place, ensuring it remains fixed and facilitating stable and accurate pipe inspection.

[0009] Preferably, as an improvement, the groove has multiple positioning holes, which are arranged in a circular array around the axis of the pipe clamp.

[0010] With the above scheme, the setting of multiple positioning holes allows the flaw detector to rotate around the pipe clamp and move to multiple lockable positions for stable inspection of the pipe. This makes it easier to inspect the pipe from different circumferential directions, and the device is more practical.

[0011] Preferably, as an improvement, the ends of the third and fourth semi-cylindrical clamps are provided with pull handles, and the pins are provided with multiple pins that are the same number as the positioning holes and are aligned one by one. The pins are fixedly connected to the pull handles, and the pull handles are slidably connected to the third and fourth semi-cylindrical clamps through the sliding fit between the pins and the positioning holes.

[0012] With the above scheme, multiple pins are used to connect and lock the blind hole and different positioning holes. At the same time, the pins serve as connectors that slide between the pull handle and the third semi-cylindrical clamp, and between the pull handle and the fourth semi-cylindrical clamp. This allows the pull handle to control the synchronous movement of multiple pins. After adjusting the position of the flaw detector, simply push the pull handle to insert one of the multiple pins into the blind hole, connecting the positioning hole and the blind hole, thereby locking the flaw detector. This eliminates the need to specifically find the pin that connects the blind hole and the positioning hole beforehand, and the flaw detector can be locked directly, making operation more convenient.

[0013] Preferably, as an improvement, the pull handles on the third and fourth semi-cylindrical clamps are magnetically connected by magnets and iron sheets.

[0014] With the above scheme, the two pull handles are magnetically connected, which allows the two pull handles to move relative to each other without hindering the relative movement of the third and fourth semi-cylindrical clamps when the device is removed from the pipe. At the same time, the two pull handles can be fixed relative to each other, so that when locking the flaw detector, only one pull handle needs to be pushed to control the movement of all the pins, making the positioning operation more convenient.

[0015] Preferably, as an improvement, the sliding connector includes a connecting shaft and a roller rotatably connected to one end of the connecting shaft. The roller is engaged in a sliding groove, and the end of the connecting shaft away from the roller is fixedly connected to a first semi-cylindrical clamp. A blind hole is provided on the connecting shaft.

[0016] The above scheme makes the sliding of the flaw detector collet in the pipe collet groove smoother and the adjustment of the flaw detector position more convenient. At the same time, the blind hole is set on the connecting shaft. Since the connecting shaft is directly fixed to the first semi-circular collet of the flaw detector collet, it is more conducive to maintaining the stability of the flaw detector after the pin is inserted into the blind hole.

[0017] Preferably, as an improvement, the outer end of the blind hole is provided with an iron ring, and the end of the positioning hole facing the slide groove is provided with a magnetic suction element that can attract the iron ring.

[0018] With the above scheme, when the flaw detector collet moves to the target position on the pipe collet, the positioning hole and the blind hole can be automatically aligned by the adsorption between the iron ring on the blind hole and the magnetic attraction on the positioning hole, which makes it easier to insert the pin and fix the flaw detector.

[0019] Preferably, as an improvement, the two ends of the pipe clamp are symmetrically arranged.

[0020] The above scheme enables both ends of the flaw detector and its collet to move on the pipe collet and be locked by both ends, which makes it easier to adjust the position of the flaw detector and its collet, and facilitates stable and accurate detection of the pipeline. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the existing fixing clamp.

[0022] Figure 2 This is a diagram showing the state of a pipeline when using existing clamps for non-destructive testing.

[0023] Figure 3 This is a front view of the non-destructive testing device of this utility model.

[0024] Figure 4 for Figure 3 A magnified view of part A in the middle.

[0025] Figure 5 This is a schematic diagram of the end of the pipe clamp.

[0026] Figure 6 This is a structural diagram of the pull handle and the latch. Detailed Implementation

[0027] The following detailed description provides further details on specific embodiments, but the embodiments of this utility model are not limited thereto. Unless otherwise specified, the technical means used in the following embodiments are conventional means well known to those skilled in the art; the experimental methods used are all conventional methods; and the materials and reagents used are all commercially available.

[0028] The reference numerals in the accompanying drawings include: 1. Flaw detector clamp; 2. Pipe clamp; 3. Flaw detector; 4. Pipe; 5. Bolt; 6. First semi-circular clamp; 7. Second semi-circular clamp; 8. Third semi-circular clamp; 9. Fourth semi-circular clamp; 10. Slide groove; 11. Connecting shaft; 12. Roller; 13. Positioning hole; 14. Blind hole; 15. Pin; 16. Pull handle; 17. Iron ring; 18. Magnetic suction element.

[0029] Example 1

[0030] Implementation, for example Figure 1 As shown: A non-destructive testing device for boiler pressure pipelines, including a fixing clamp and an X-ray flaw detector 3, as shown. Figure 3 As shown, the fixing clamp includes a flaw detector clamp 1 for fixing the X-ray flaw detector 3 and a pipe clamp 2 for fixing the pipe 4. The X-ray flaw detector 3 is clamped and fixed in the flaw detector clamp 1. The flaw detector clamp 1 includes a first semi-cylindrical clamp 6 and a second semi-cylindrical clamp 7 that are hinged at one end and detachably connected at the other end. The detachable connection is specifically achieved by bolts 5. The pipe clamp 2 includes a third semi-cylindrical clamp 8 and a fourth semi-cylindrical clamp 9 that are hinged at one end and detachably connected at the other end. The detachable connection is specifically achieved by bolts 5. The first semi-cylindrical clamp 6 and the second semi-cylindrical clamp 7, and the third semi-cylindrical clamp 8 and the fourth semi-cylindrical clamp 9 can be assembled to form a cylindrical shape.

[0031] The third semi-cylindrical clamp 8 has a first arc-shaped groove on its outer wall, and the fourth semi-cylindrical clamp 9 has a second arc-shaped groove on its outer wall. The first and second arc-shaped grooves combine end to end to form an annular sliding groove 10. The first semi-cylindrical clamp 6 is equipped with a sliding connector, which... Figure 4 As shown, the sliding connector in this embodiment includes a connecting shaft 11 and a roller 12 rotatably connected to one end of the connecting shaft 11. The rotatable connection method and connection structure between the connecting shaft 11 and the roller 12 are mature existing technologies and are widely used in daily life, such as suitcase pulleys or pulleys for sliding seats, etc., which will not be described in detail here. The end of the connecting shaft 11 away from the roller 12 is welded or bolted to the first semi-cylindrical clamp 6 for fixation. The roller 12 in the sliding connector is engaged in the sliding groove 10 and can slide along the sliding groove 10.

[0032] Combination Figures 3-5As shown, the groove wall of the slide 10 is provided with positioning holes 13. In this embodiment, there are multiple positioning holes 13, which are arranged in a circular array around the axis of the pipe clamp 2. The connecting shaft 11 of the sliding connector is provided with blind holes 14 that can be directly opposite the positioning holes 13. The axes of the positioning holes 13 and the blind holes 14 are parallel to the axis of the pipe clamp 2. Each positioning hole 13 is slidably provided with a pin 15. There are multiple pins 15, which are the same number as the positioning holes 13 and are matched one-to-one. The pins 15 can be inserted into the positioning holes 13 and the blind holes 14 at the same time to position the positioning holes 13 and the blind holes 14.

[0033] Combination Figure 6 As shown, both the third semi-cylindrical clamp 8 and the fourth semi-cylindrical clamp 9 have a pull handle 16 slidably connected to their ends. Pins 15 are welded and fixed to the pull handle 16. The pull handle 16 is indirectly slidably connected to the third semi-cylindrical clamp 8 and the fourth semi-cylindrical clamp 9 through the sliding fit between the pins 15 and the positioning holes 13. The pull handle 16 on the third semi-cylindrical clamp 8 and the pull handle 16 on the fourth semi-cylindrical clamp 9 are magnetically connected by a magnet and an iron sheet.

[0034] In practical application, when non-destructive testing of boiler pipe 4 is required, the flaw detector 3 is positioned between the first semi-cylindrical clamp 6 and the second semi-cylindrical clamp 7, and the free ends of the first semi-cylindrical clamp 6 and the second semi-cylindrical clamp 7 are locked and fixed with bolts 5. After sliding the flaw detector 3 and the flaw detector clamp 1 along the sliding groove 10 on the pipe clamp 2 to a suitable position, the pull handle 16 is pushed towards the middle of the third semi-cylindrical clamp 8 and the fourth semi-cylindrical clamp 9, so that the pin 15 is inserted from the positioning hole 13 into the blind hole 14, thereby locking the position of the flaw detector 3 and the flaw detector clamp 1 on the pipe clamp 2. Then, the pipe 4 to be tested is clamped and fixed by the third semi-cylindrical clamp 8 and the fourth semi-cylindrical clamp 9, thereby installing and fixing the device on the pipe 4 to be tested. When clamping and fixing the pipe 4, the detection head of the flaw detector 3 is directly facing the part of the pipe 4 to be tested, so as to facilitate stable and accurate testing of the pipe 4.

[0035] After the device is installed and fixed, when it is necessary to inspect the pipe 4 from different directions outside the circumference of the pipe 4, pull the handle 16 out of the third semi-cylindrical clamp 8 and the fourth semi-cylindrical clamp. At this time, the pin 15 moves with the handle 16 and disengages from the blind hole 14, thereby releasing the lock on the flaw detector 3 and the flaw detector clamp 1. Then, slide the flaw detector 3 and the flaw detector clamp 1 to the appropriate position along the sliding groove 10 on the surface of the pipe clamp 2, and then push the handle 16 back in so that the pin 15 is inserted into the blind hole 14 and the flaw detector 3 and the flaw detector clamp 1 are locked again.

[0036] In this way, without disassembling the entire device, flaw detection of pipe 4 can be performed from different positions on the outer circumference of pipe 4. Adjusting the position of the device is simpler and more convenient, thus improving the detection efficiency of pipe 4.

[0037] Example 2

[0038] This embodiment is based on embodiment 1, combined with Figure 4 As shown, an iron ring 17 is provided at the outer end of the blind hole 14, and a magnetic attractor 18, i.e. a magnet, is provided at the end of the positioning hole 13 facing the slide groove 10 to attract the iron ring 17. At the same time, the two ends of the pipe clamp 2 are symmetrically arranged in this embodiment.

[0039] The implementation process of this embodiment is the same as that of embodiment 1. The difference is that when the flaw detector 3 and the flaw detector collet 1 slide along the slide groove 10 to adjust their position, after they move to the vicinity of the appropriate position, the positioning hole 13 and the blind hole 14 can be automatically aligned and engaged by the magnetic attraction between the iron ring 17 at the outer end of the blind hole 14 and the magnetic attraction member 18 at the end of the positioning hole 13. This makes it easier to insert the pin 15 and facilitates the locking operation of the flaw detector 3 and the flaw detector collet 1.

[0040] Furthermore, since the pipe clamp 2 is symmetrically arranged at both ends, both ends of the flaw detector 3 and the flaw detector clamp 1 can move on the pipe clamp 2 and be locked by both ends, which makes it easier to adjust the position of the flaw detector 3 and the flaw detector clamp 1, and facilitates the stable and accurate detection of the pipe 4.

[0041] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A non-destructive testing device for boiler pressure pipelines, comprising a fixing clamp and an X-ray flaw detector, wherein the fixing clamp includes a flaw detector clamp for fixing the X-ray flaw detector and a pipeline clamp for fixing the pipeline, the X-ray flaw detector being clamped and fixed in the flaw detector clamp; the flaw detector clamp includes a first semi-cylindrical clamp and a second semi-cylindrical clamp hinged at one end and detachably connected at the other end; the pipeline clamp includes a third semi-cylindrical clamp and a fourth semi-cylindrical clamp hinged at one end and detachably connected at the other end, wherein the first and second semi-cylindrical clamps, and the third and fourth semi-cylindrical clamps, can be respectively assembled to form a cylindrical shape, characterized in that: The third semi-cylindrical clamp has a first arc-shaped groove on its outer wall, and the fourth semi-cylindrical clamp has a second arc-shaped groove on its outer wall. The first and second arc-shaped grooves are joined end to end to form an annular sliding groove. The first semi-cylindrical clamp has a sliding connector that is engaged in the sliding groove and can slide along the groove. The groove wall has a positioning hole with the axis of the positioning hole parallel to the axis of the pipe clamp. The sliding connector has a blind hole that is directly opposite the positioning hole. The axes of both the positioning hole and the blind hole are parallel to the axis of the pipe clamp. A pin is slidably installed in the positioning hole, and the pin can be inserted into both the positioning hole and the blind hole simultaneously.

2. The non-destructive testing device for boiler pressure pipelines according to claim 1, characterized in that: The chute has multiple positioning holes, which are arranged in a circular array around the axis of the pipe clamp.

3. The non-destructive testing device for boiler pressure pipelines according to claim 2, characterized in that: The ends of the third and fourth semi-cylindrical clamps are each provided with a pull handle. The pins are provided with multiple pins that are the same number as the positioning holes and are aligned one by one. The pins are all fixedly connected to the pull handles. The pull handles are slidably connected to the third and fourth semi-cylindrical clamps through the sliding fit between the pins and the positioning holes.

4. The non-destructive testing device for boiler pressure pipelines according to claim 3, characterized in that: The pull handles on the third and fourth semi-cylindrical clamps are magnetically connected by magnets and iron plates.

5. A non-destructive testing device for boiler pressure pipelines according to claim 4, characterized in that: The sliding connector includes a connecting shaft and a roller rotatably connected to one end of the connecting shaft. The roller is stuck in a sliding groove. The end of the connecting shaft away from the roller is fixedly connected to a first semi-cylindrical clamp. The blind hole is provided on the connecting shaft.

6. A non-destructive testing device for boiler pressure pipelines according to claim 5, characterized in that: The outer end of the blind hole is provided with an iron ring, and the end of the positioning hole facing the slide groove is provided with a magnetic suction element that can attract the iron ring.

7. A non-destructive testing device for boiler pressure pipelines according to claim 6, characterized in that: The pipe clamps are symmetrically arranged at both ends.

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