A seamless steel pipe flaw detection device

Abstract

The present application discloses a seamless steel pipe flaw detection device, which belongs to the technical field of detection tools, and is used to provide a seamless steel pipe flaw detection device that can perform rapid and rough inspection, including a light source and a detection sleeve, wherein the end of the light source has a laser head, and one end of the light source with the laser head is suitable for being embedded into the steel pipe body from the end of the steel pipe body, and emitting a laser of a specific frequency into the hollow cavity of the steel pipe body, and the detection sleeve is suitable for being sleeved outside the steel pipe body, and suitable for sliding from one end of the steel pipe body to the other end, and the inner wall of the detection sleeve is provided with annularly arranged light sensor sheets. The light source designed by the present application and the detection sleeve with built-in light sensor sheets can be used together to use the light transmittance of the steel pipe to determine whether the seamless steel pipe is truly seamless, thereby achieving rapid and rough inspection, greatly improving the inspection efficiency of the seamless steel pipe, and being more suitable for projects with low quality requirements for seamless steel pipes, and can effectively reduce the time cost of angle inspection.

Description

Technical Field

[0001] The present application relates to the technical field of detection tools, and in particular to a seamless steel pipe flaw detection device. Background Art

[0002] Seamless steel pipe is one of the important components in engineering construction, but it is difficult to ensure foolproofness during the production process of seamless steel pipe. Therefore, it is necessary to inspect the steel pipe body before leaving the factory. There are many kinds of equipment available for quality inspection of seamless steel pipes, such as ultrasonic detectors. This detector can detect slight damage on steel pipes, but the detection efficiency is low. Sometimes construction projects do not require perfect steel pipes, as long as there are no cracks or holes in the steel pipes. At this time, ultrasonic detectors are not applicable due to their low detection efficiency. Summary of the invention

[0003] The purpose of the present application is to provide a seamless steel pipe flaw detection device that can perform rapid and rough inspection.

[0004] In order to achieve the above purpose, the present application provides a seamless steel pipe flaw detection device: including a light source and a detection sleeve, the end of the light source has a laser head, one end of the light source with the laser head is suitable for being embedded into the steel pipe body from the end of the steel pipe body, and emitting a laser of a specific frequency into the hollow cavity of the steel pipe body, the detection sleeve is suitable for being sleeved outside the steel pipe body and suitable for sliding from one end of the steel pipe body to the other end, and the inner wall of the detection sleeve is provided with a ring-arranged optical sensor sheet for detecting the laser of the specific frequency. The detection of the laser indicates that the steel pipe body has obvious damage.

[0005] Preferably, the light source includes an embedded handle, one end of which is open for emitting the laser generated by the light source. The diameter of the embedded handle is smaller than the inner diameter of the steel tube body and is suitable for being embedded in the hollow cavity of the steel tube body to allow the laser to fill the interior of the steel tube body.

[0006] Preferably, the other end of the embedded handle is fixedly connected to a limiting plate, the diameter of the limiting plate is larger than the inner diameter of the steel tube body, and is used to limit the fitting depth between the embedded handle and the steel tube body.

[0007] Preferably, a vibration-damping pad is provided on the end face of the limiting plate facing the embedded handle. The vibration-damping pad surrounds the embedded handle and contacts the end face of the steel pipe body instead of the limiting plate, thereby converting hard contact into soft contact and reducing scratch damage.

[0008] Preferably, an extension sleeve is provided on the end surface of the limiting plate facing away from the embedded handle, and the limiting plate is connected to a power cord via the extension sleeve. The power cord is electrically connected to the laser head to supply power to the laser head.

[0009] As a preferred embodiment, the detection sleeve includes a tube sleeve, the inner diameter of the tube sleeve is larger than the outer diameter of the steel tube body, the inner wall of the tube sleeve is provided with a configuration groove, the optical sensor sheets are fixed in the configuration groove, and the inner wall diameter of the annular structure surrounded by the optical sensor sheets is larger than the inner diameter of the tube sleeve, thereby reducing the probability of contact between the optical sensor sheets and the steel tube body and reducing relative contact wear.

[0010] Preferably, the outer side surface of the tube sliding sleeve has a wiring sleeve, the tube sliding sleeve is connected to a signal line through the wiring sleeve, and the signal line is electrically connected to all the optical sensor sheets for obtaining detection signals of the optical sensor sheets.

[0011] As a preferred embodiment, both ends of the tube sliding sleeve are provided with a toggle ring, and the outer diameter of the toggle ring is larger than the outer diameter of the tube sliding sleeve, so as to easily withstand the toggle force of the finger and allow the detection sleeve to slide along the steel tube body.

[0012] Compared with the prior art, the beneficial effects of this application are:

[0013] (1) The light source designed in the present application and the detection sleeve with a built-in light sensor sheet can be used together to use the light transmittance of the steel pipe to determine whether the seamless steel pipe is truly seamless, thereby achieving rapid rough inspection and greatly improving the inspection efficiency of seamless steel pipes. It is more suitable for projects with low quality requirements for seamless steel pipes and can effectively reduce the time cost of angle inspection;

[0014] (2) The design has a simple structure and high sensitivity. The test process is just a one-step process of sliding from one end of the steel pipe to the other end. The operation process is very quick and simple. At most, it will return to the initial position when the damage location needs to be determined. Therefore, the rough inspection has a relatively high positioning accuracy for obvious damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a first stereoscopic schematic diagram of the position of the seamless steel pipe flaw detection device corresponding to the steel pipe body;

[0016] Figure 2 A second stereoscopic schematic diagram of the seamless steel pipe flaw detection device corresponding to the position of the steel pipe body;

[0017] Figure 3 It is a three-dimensional structural schematic diagram of the seamless steel pipe flaw detection device;

[0018] Figure 4 It is a three-dimensional structural cross-sectional view of the detection sleeve of the seamless steel pipe flaw detection device;

[0019] Figure 5 It is a schematic diagram of the three-dimensional structure of the light source of the seamless steel pipe flaw detection device.

[0020] In the figure: 1. light source; 101. limit plate; 102. vibration damping pad; 103. embedded handle; 104. laser head; 105. extension sleeve; 106. power cord; 2. detection sleeve; 201. tube sliding sleeve; 202. toggle ring; 203. configuration slot; 204. light sensor sheet; 205. wiring sleeve; 206. signal line; 3. steel tube body; 301. hollow cavity. DETAILED DESCRIPTION

[0021] Below, the present application is further described in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0022] In the description of the present application, it should be noted that directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of narrating the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific scope of protection of the present application.

[0023] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0024] The terms "including" and "having" and any variations thereof in the specification and claims of this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0025] like Figure 1-5The seamless steel pipe flaw detection device shown in the figure includes a separate light source 1 and a detection sleeve 2. The light source 1 is the transmitting end of the flaw detection device, and the detection sleeve 2 is the receiving end of the flaw detection device. The two cooperate to realize the flaw detection of the steel pipe body 3 with a hollow cavity 301. Specifically: the end of the light source 1 has a laser head 104. Like all laser light sources, the laser generated by the laser head 104 also has a certain divergence angle, and this divergence angle is beneficial to the test, so there is no need to narrow it deliberately. The end of the light source 1 with the laser head 104 needs to be embedded into the steel pipe body 3 from the end of the steel pipe body 3. This is the first step to realize the flaw detection of seamless steel pipes. The laser head 104 will be directed to the hollow cavity of the steel pipe body 3. 301 emits a laser of a specific frequency, which makes it easier to be detected. The specific structure of the light source 1 includes an embedded handle 103. The embedded handle 103 is usually made of an alloy material with high thermal conductivity, which is convenient for the laser head 104 located therein to dissipate heat. One end of the embedded handle 103 is open for the laser generated by the light source 1 to be emitted. The inner wall of the embedded handle 103 has a certain taper, and the inner diameter near the open end is larger. The interior of the embedded handle 103 is smooth, which can improve the utilization rate of the laser generated by the laser head 104. The diameter of the embedded handle 103 is smaller than the inner diameter of the steel tube body 3, so that it can be easily embedded in the hollow cavity 301 of the steel tube body 3, allowing the laser generated by the laser head 104 to be completely emitted into the steel tube body 3.

[0026] The other end of the embedded handle 103 is fixedly connected to the limit plate 101. The diameter of the limit plate 101 is significantly larger than the outer diameter of the embedded handle 103. At the same time, the diameter of the limit plate 101 is also larger than the inner diameter of the steel tube body 3. Therefore, the limit plate 101 will be blocked at the end of the limit plate 101, thereby limiting the maximum insertion depth of the embedded handle 103. The end surface of the limit plate 101 facing the embedded handle 103 is provided with a vibration-damping pad 102. The vibration-damping pad 102 is generally made of rubber or silicone material, which can avoid unnecessary scratches and wear caused by hard contact between the limit plate 101 and the steel tube body 3. 2 surrounds the embedded handle 103 and just contacts with the end face of the seamless steel pipe to be tested. The end face of the limit plate 101 facing away from the embedded handle 103 is provided with an extension sleeve 105, and the extension sleeve 105 protrudes from the end face of the limit plate 101. The limit plate 101 is connected with a power cord 106 through the extension sleeve 105. In fact, the role of the extension sleeve 105 is to increase the contact area between the outer protective layer of the power cord 106 and the limit plate 101, thereby reducing the probability of the power cord 106 and the limit plate 101 being pulled off. The power cord 106 is electrically connected to the laser head 104 and is used to supply power to the laser head 104.

[0027] The detection sleeve 2 is put on the outside of the steel pipe body 3 during detection. One round of detection can be completed by sliding from one end of the steel pipe body 3 to the other end. The inner wall of the detection sleeve 2 is provided with a ring-shaped light sensor sheet 204 for detecting the laser of the specific frequency. Specifically, when the light sensor sheet 204 receives the laser of the specific frequency, photoelectric efficiency will occur, and the light signal will be converted into an electrical signal, and only the light of this frequency can produce a photoelectric effect. There is more than one group of ring-shaped light sensor sheets 204. In this embodiment, there are multiple groups, and the multiple groups of light The sensor sheet 204 does not need to be aligned, which can effectively reduce the detection blind area. The specific structure of the detection sleeve 2 includes a tube sleeve 201. The inner diameter of the tube sleeve 201 is larger than the outer diameter of the steel tube body 3, so it can be easily put on the outside of the steel tube body 3. The inner wall of the tube sleeve 201 is provided with a configuration groove 203. The optical sensor sheets 204 are fixed in the configuration groove 203 to form a plurality of rings, and the inner wall diameter of the annular structure surrounded by the optical sensor sheets 204 is larger than the inner diameter of the tube sleeve 201. This can effectively avoid the optical sensor sheets and the steel tube body 3 from being scratched and worn.

[0028] The outer side of the tube sleeve 201 is provided with a wiring sleeve 205, and the wiring sleeve 205 also protrudes from the outer surface of the tube sleeve 201. The tube sleeve 201 is connected with a signal line 206 through the wiring sleeve 205. The wiring sleeve 205 is used to increase the contact area between the signal line 206 and the tube sleeve 201, thereby reducing the probability of the signal line 206 breaking free from the wiring sleeve 205. The signal line 206 is electrically connected to all the optical sensor sheets 204 to obtain the inspection information of the optical sensor sheets 204, which is concentrated on the processor of the flaw detection device, and then it is determined whether the seamless steel pipe is really seamless. Both ends of the tube sleeve 201 are provided with a toggle ring 202. The tube sleeve 201 can be easily toggled by holding the toggle ring 202 with a finger. The outer diameter of the toggle ring 202 is larger than the outer diameter of the tube sleeve 201, and the outer surface protruding from the tube sleeve 201 can more easily withstand traction.

[0029] Working principle: When in use, the embedded handle 103 of the light source 1 is inserted into the hollow cavity 301 from one end of the steel tube body 3 to be detected, and the other end of the steel tube body 3 without the light source 1 is covered with a mirror, which can improve the utilization rate of the laser and make the light intensity inside the steel tube body 3 higher. At the same time, the detection sleeve 2 is put on the outside of one end of the steel tube body 3 to be detected, and then the laser head 104 is powered on, and the light sensor piece 204 in the detection sleeve 2 is started. Due to the divergence and reflection characteristics of the laser itself, the interior of the entire steel tube body 3 will be filled with a specific frequency. Light, if the steel tube body 3 has cracks or other damage connecting the inner and outer walls, the light of this specific frequency will pass through the damaged part and be detected by the optical sensor 204 sliding past. If the detection device detects a damage reaction, it is necessary to let the detection sleeve 2 slide from one end to the other end and then slide back to the initial position. During the return process, the reacting part is marked to determine the damaged part of the seamless steel tube body 3. According to the position of the damaged part and its proportion in the entire steel tube body 3, it is decided whether to cut it off and continue to use it or directly scrap it for recycling.

[0030] The above describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and the specification only describe the principles of the present application. The present application may have various changes and improvements without departing from the spirit and scope of the present application, and these changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the attached claims and their equivalents.

Claims

1. A seamless steel pipe flaw detection device, characterized in that: The invention comprises a light source (1) and a detection sleeve (2), wherein the end of the light source (1) is provided with a laser head (104), and one end of the light source (1) having the laser head (104) is adapted to be embedded into the steel pipe body (3) from the end of the steel pipe body (3) and emit laser light of a specific frequency into a hollow cavity (301) of the steel pipe body (3); the detection sleeve (2) is adapted to be sleeved outside the steel pipe body (3) and to slide from one end of the steel pipe body (3) to the other end; and the inner wall of the detection sleeve (2) is provided with light sensor sheets (204) arranged in an annular manner for detecting the laser light of the specific frequency.

2. The seamless steel pipe flaw detection device according to claim 1, characterized in that: The light source (1) comprises an embedded handle (103), one end of which is open for emitting laser light generated by the light source (1). The diameter of the embedded handle (103) is smaller than the inner diameter of the steel tube body (3) and is suitable for being embedded in the hollow cavity (301) of the steel tube body (3).

3. The seamless steel pipe flaw detection device according to claim 2, characterized in that: The other end of the embedded handle (103) is fixedly connected to a limiting plate (101), and the diameter of the limiting plate (101) is larger than the inner diameter of the steel tube body (3).

4. The seamless steel pipe flaw detection device according to claim 3, characterized in that: A vibration-damping pad (102) is provided on the end surface of the limiting plate (101) facing the embedded handle (103), and the vibration-damping pad (102) surrounds the embedded handle (103).

5. The seamless steel pipe flaw detection device according to claim 4, characterized in that: An extension sleeve (105) is provided on the end surface of the limiting plate (101) facing away from the embedded handle (103); the limiting plate (101) is connected to a power cord (106) via the extension sleeve (105); and the power cord (106) is electrically connected to the laser head (104).

6. The flaw detection device for seamless steel pipe according to any one of claims 1 to 5, characterized in that: The detection sleeve (2) comprises a tube sleeve (201), the inner diameter of the tube sleeve (201) is larger than the outer diameter of the steel tube body (3), a configuration groove (203) is provided on the inner wall of the tube sleeve (201), the optical sensor sheets (204) are fixed in the configuration groove (203), and the inner wall diameter of the annular structure surrounded by the optical sensor sheets (204) is larger than the inner diameter of the tube sleeve (201).

7. The seamless steel pipe flaw detection device according to claim 6, characterized in that: The outer side surface of the tube sliding sleeve (201) is provided with a wiring sleeve (205), the tube sliding sleeve (201) is connected to a signal line (206) via the wiring sleeve (205), and the signal line (206) is electrically connected to all the light sensor sheets (204).

8. The seamless steel pipe flaw detection device according to claim 7, characterized in that: Both ends of the tube sliding sleeve (201) are provided with a toggle ring (202), and the outer diameter of the toggle ring (202) is greater than the outer diameter of the tube sliding sleeve (201).

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