Deep hole ultrasonic detection scanner

Abstract

The utility model relates to the technical field of ultrasonic nondestructive testing, in particular to a deep hole ultrasonic testing scanner which comprises a probe push rod, one end of the probe push rod is fixedly provided with a mounting block, the other end of the probe push rod is fixedly provided with a scanning rotating handle, the middle end of the probe push rod is sleeved with a positioning block, and one face of the mounting block is connected with an ultrasonic probe through an elastic mechanism. The mounting block, the ultrasonic probe and the encoder extend into a deep hole workpiece, the positioning block is clamped on an orifice of the deep hole workpiece, the scanning rotating handle is rotated, so that the ultrasonic probe rotates to scan a welding seam, and the encoder records scanning displacement information of the ultrasonic probe in a deep hole. According to the deep hole ultrasonic detection scanner, in the detection process, the position of the ultrasonic probe in a detected deep hole workpiece can be determined, stable rotation can be achieved in the scanning process, rapid and accurate scanning is achieved, the requirement for personnel operation is lowered, and the detection efficiency and accuracy are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of ultrasonic non-destructive testing, in particular to a deep-hole ultrasonic detection scanner. Background Technique

[0002] Components such as cast steel parts and forgings generally have deep holes, steps, etc. after cutting and processing. This part is prone to stress concentration and cracking, and most parts cannot be detected outside the workpiece, which is a difficult point in the current in-service stage detection. In addition, with the rapid development of the economic society, high-temperature and high-pressure heat exchangers have been widely used. The heat exchanger not only needs to withstand high temperature and high pressure, but also often suffers from strong corrosion of the medium. Therefore, the connection quality of the heat exchange tubes and tube sheets with the internal hole welding structure is crucial for the service life of the equipment and engineering safety.

[0003] At present, the domestic detection methods for internal hole welded joints mainly include surface defect detection methods such as water or gas leakage inspection, magnetic particle detection, and penetrant detection. However, these methods cannot effectively detect internal defects in the welds. Under working conditions such as high temperature, high pressure, and strong corrosion, defects inside the fillet welds may cause device leakage and lead to accidents. Therefore, it is extremely crucial to detect internal defects in the fillet welds during the manufacturing and use of internal hole welded joints. Summary of the Invention

[0004] The main purpose of the utility model is to overcome the deficiencies in the prior art and provide a deep-hole ultrasonic detection scanner.

[0005] The technical solution adopted by the utility model to achieve its technical purpose is: a deep-hole ultrasonic detection scanner, including a probe push rod, one end of the probe push rod is fixedly provided with a mounting block, the other end is fixedly provided with a scanning rotation handle, and a positioning block is sleeved in the middle;

[0006] One side of the mounting block is connected with an ultrasonic probe through an elastic mechanism, and the other side is elastically connected with an encoder;

[0007] The mounting block, the ultrasonic probe and the encoder extend into the deep-hole workpiece, the positioning block is stuck on the orifice of the deep-hole workpiece, and the scanning rotation handle is rotated to make the ultrasonic probe rotate and scan the weld, and the encoder records the scanning displacement information of the ultrasonic probe inside the deep hole.

[0008] Preferably, a locking handle is provided on the positioning block in a matching manner. By pulling and rotating the locking handle, relative sliding between the probe push rod and the positioning block will not occur.

[0009] Preferably, elastic steel columns are arranged at the contact points between the positioning block and the orifice of the deep-hole workpiece. The positioning block is processed according to the deep-hole diameter and contacts the orifice through three evenly distributed contact points. The elastic steel columns are fixedly installed inside the contact points, which can ensure that the pipe diameter is applicable within a tolerance of ±mm.

[0010] Preferably, scales are engraved on the outer wall of the probe push rod, and the position of the probe inside the deep hole can be accurately located through the scales.

[0011] Preferably, a wedge block is fixed at one end of the ultrasonic probe, a probe clamping frame is fixedly arranged on one side of the wedge block, the probe clamping frame is elastically arranged on one side of the mounting block, and the probe clamping frame is used to fix the ultrasonic probe and the wedge block.

[0012] Preferably, an encoder roller is fixed on one side of the encoder, the encoder roller is elastically arranged on the other side of the mounting block, and the scanning displacement is recorded by ensuring that the encoder roller fits the workpiece.

[0013] Preferably, the elastic mechanism includes a guide post and a spring. The spring is sleeved on the guide post, and the tops of the spring and the guide post are fixed to the probe clamping frame and the encoder roller; the guide post is provided with a guide bushing, the guide bushing is fixedly located inside the mounting block, and the guide post is inside the guide bushing to ensure smooth up and down movement and no deflection of the guide post, so that the compression force of the spring is applied in the vertical direction.

[0014] Preferably, a cable fixing block is also fixed on the other side of the mounting block. The cable fixing block is used to fix the ultrasonic probe, the encoder cable, the water supply coupling water pipe, etc., so that the cable and the water pipe are in fixed positions when the scanner rotates.

[0015] Preferably, limit rollers are rotatably connected to the four corner positions on the side of the mounting block. The limit rollers are polyurethane-coated bearing rollers, which play a role in supporting and limiting, making the scanner rotate more smoothly in the deep hole, and at the same time ensuring better coaxiality of the scanner rotation.

[0016] Compared with the prior art, the beneficial effects of the present utility model are:

[0017] During the detection process, the deep hole ultrasonic detection scanner can determine the position of the ultrasonic probe inside the detected deep hole workpiece, and can rotate stably during the scanning process, realizing fast and accurate scanning, reducing the requirements for personnel operation, improving the detection efficiency and accuracy, and thus significantly improving the detection speed, detection accuracy and detection reliability, effectively ensuring the manufacturing quality and use safety of workpieces such as deep hole workpieces and fillet welds. Description of the Drawings

[0018] Figure 1 It is a three-dimensional structural schematic diagram of a deep hole ultrasonic detection scanner.

[0019] Figure 2 It is a three-dimensional structural schematic diagram of the side of the deep hole ultrasonic detection scanner with an encoder.

[0020] Figure 3 It is a three-dimensional structure schematic diagram of a deep-hole ultrasonic detection scanner for detecting deep-hole workpieces.

[0021] Among them:

[0022] 1 - Scanning rotation handle; 2 - Probe push rod; 201 - Scale; 3 - Positioning block; 301 - Elastic steel column; 4 - Wedge block; 5 - Ultrasonic probe; 6 - Limit roller; 7 - Mounting block; 8 - Guide column; 9 - Probe clamping frame; 10 - Spring; 11 - Cable fixing block; 12 - Locking handle; 13 - Encoder roller; 14 - Encoder; 15 - Deep-hole workpiece. Specific embodiments

[0023] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present invention is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present invention, it should also be noted that unless otherwise clearly defined and limited, the terms "set", "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0025] To make the purpose, technical solution and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below through the drawings and embodiments. However, it should be understood that the specific embodiments described herein are only used to explain the present invention and do not limit the scope of the present invention. In addition, in the following description, the descriptions of well-known structures and technologies are omitted to avoid unnecessarily confusing the concepts of the present invention. Embodiment 1

[0026] Please refer to Figures 1-3 , a deep-hole ultrasonic detection scanner, including a probe push rod 2. One end of the probe push rod 2 is fixedly provided with a mounting block 7, the other end is fixedly provided with a scanning rotation handle 1, and a positioning block 3 is sleeved on the middle end;

[0027] At the four corner positions on the side of the mounting block 7, there are limit rollers 6 rotatably connected. The limit rollers 6 are polyurethane-coated bearing rollers, which play a role in supporting and limiting, making the scanner rotate more smoothly in the deep hole, and at the same time ensuring better coaxiality of the scanner rotation;

[0028] The positioning block 3 is set in the structure of a combination of a circular sleeve and a three-pronged rod. The probe push rod 2 is in sliding connection with the positioning block 3, and a locking handle 12 is provided on the positioning block 3. By pulling and rotating the locking handle 12, relative sliding between the probe push rod 2 and the positioning block 3 will not occur.

[0029] One side of the mounting block 7 is connected with an ultrasonic probe 5 through an elastic mechanism, and the other side is connected with an encoder 14 through an elastic mechanism;

[0030] A wedge block 4 is fixed at one end of the ultrasonic probe 5, and a probe clamping frame 9 is fixedly arranged on one side of the wedge block 4. The probe clamping frame 9 is elastically arranged on one side of the mounting block 7, and the probe clamping frame 9 is used to fix the ultrasonic probe 5 and the wedge block 4;

[0031] An encoder roller 13 is fixed on one side of the encoder 14. The encoder roller 13 is elastically arranged on the other side of the mounting block 7, and the scanning displacement is recorded by ensuring that the encoder roller fits the workpiece;

[0032] The elastic mechanism includes a guide post 8 and a spring 10. The spring 10 is sleeved on the guide post 8, and the tops of the spring 10 and the guide post 8 are fixed to the probe clamping frame 9 and the encoder roller 13; The guide post 8 is equipped with a guide bushing, and the guide bushing is fixedly located inside the mounting block 7. The guide post 8 is inside the guide bushing, ensuring smooth up and down movement and no deviation of the guide post 8, so that the compression force of the spring 10 is applied in the vertical direction.

[0033] The mounting block 7, the ultrasonic probe 5 and the encoder 14 extend into the deep-hole workpiece 15. The positioning block 3 is stuck on the orifice of the deep-hole workpiece 15. Rotate the scanning rotation handle 1, so that the ultrasonic probe 5 rotates to scan the weld seam, and the encoder 14 records the scanning displacement information of the ultrasonic probe 5 inside the deep hole.

[0034] Furthermore, an elastic steel column 301 is arranged at the contact point between the positioning block 3 and the orifice of the deep-hole workpiece 15. The positioning block 3 is machined according to the deep-hole diameter, and contacts the orifice through three evenly distributed contact points. The elastic steel column 301 is fixedly installed inside the contact point, which can ensure that the pipe diameter is applicable within a tolerance of ±2 mm.

[0035] Furthermore, a scale 201 is engraved on the outer wall of the probe push rod 2, and the position of the probe inside the deep hole can be accurately positioned through the scale.

[0036] Furthermore, on the other side of the mounting block 7, a cable fixing block 11 is also fixed. The cable fixing block 11 is used to fix the ultrasonic probe 5, the encoder cable, the water supply coupling water pipe, etc., so that the cable and the water pipe are in fixed positions when the scanner rotates.

[0037] The working principle and specific usage process of this deep-hole ultrasonic detection scanner:

[0038] First, insert the deep-hole ultrasonic detection scanner into the deep-hole workpiece 15. The encoder 14 and the ultrasonic probe 5 are first inserted into the deep hole, then the positioning block 3 is clamped on the orifice of the deep-hole workpiece 15. Loosen the positioning block locking handle 12, and push the probe telescopic rod 2 into the deep hole of the deep-hole workpiece 15. Determine the position of the ultrasonic probe 5 and the detected object from the scale ruler. After the ultrasonic probe 5 reaches the detection position, lock the positioning locking handle 12, and rotate the scanning rotation handle 1. The scanner drives the ultrasonic probe 5 and the wedge block 4 to rotate and scan the weld seam;

[0039] The probe clamping frame 7 and the encoder 14 have an elastic mechanism to apply a coupling pressure to the probe, so that the probe fits well with the workpiece during the scanning process. During the scanning process, the encoder 14 records the scanning displacement information, and C-scan imaging can be realized;

[0040] The scanner rotates one week to complete the scanning of the workpiece at this position. After the scanning is completed, pull the scanner out of the deep hole.

[0041] It should be noted that although the above embodiments have been described in this article, the patent protection scope of the present invention is not limited thereby. Therefore, based on the innovative concept of the present invention, any changes and modifications made to the embodiments described in this article, or equivalent structural, equivalent process, or equivalent function transformations made using the content of the specification and drawings of the present invention, directly or indirectly applying the above technical solutions to other related technical fields, are all included in the patent protection scope of the present invention.

Claims

1. A deep hole ultrasonic detection scanner, characterized in that: It comprises a probe push rod (2), one end of which is fixedly provided with a mounting block (7), the other end of which is fixedly provided with a scanning rotating handle (1), and the middle end of which is sleeved with a positioning block (3); One side of the mounting block (7) is connected to an ultrasonic probe (5) via an elastic mechanism, and the other side of the mounting block (7) is connected to an encoder (14) via an elastic mechanism. The mounting block (7), the ultrasonic probe (5) and the encoder (14) extend into the deep hole workpiece (15), the positioning block (3) is clamped on the hole opening of the deep hole workpiece (15), and the scanning rotation handle (1) is rotated to rotate the ultrasonic probe (5) to scan the weld, and the encoder (14) records the scanning displacement information of the ultrasonic probe (5) inside the deep hole.

2. A deep hole ultrasonic detection scanner according to claim 1, characterized in that: The positioning block (3) is matched with a locking handle (12).

3. A deep hole ultrasonic detection scanner according to claim 2, characterized in that: An elastic steel column (301) is provided at the contact point between the positioning block (3) and the hole opening of the deep hole workpiece (15).

4. The deep hole ultrasonic detection scanner according to claim 2, characterized in that: The outer wall of the probe push rod (2) is engraved with scales (201).

5. The deep hole ultrasonic detection scanner according to claim 1, characterized in that: A wedge block (4) is fixed to one end of the ultrasonic probe (5), a probe clamping frame (9) is fixedly arranged on one side of the wedge block (4), and the probe clamping frame (9) is elastically arranged on one side of the mounting block (7).

6. A deep hole ultrasonic detection scanner according to claim 5, characterized in that: An encoder roller (13) is fixed to one side of the encoder (14), and the encoder roller (13) is elastically arranged on the other side of the mounting block (7).

7. A deep hole ultrasonic detection scanner according to claim 6, characterized in that: The elastic mechanism comprises a guide column (8) and a spring (10), wherein the spring (10) is sleeved on the guide column (8), and the tops of the spring (10) and the guide column (8) are fixed to a probe clamping frame (9) and an encoder roller (13).

8. The deep hole ultrasonic detection scanner according to claim 1, characterized in that: A cable fixing block (11) is also fixed to the other side of the mounting block (7).

9. The deep hole ultrasonic detection scanner according to claim 1, characterized in that: The four corners of the side surface of the mounting block (7) are rotatably connected to limit rollers (6).

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