Auxiliary calibration device and calibration system for phased array ultrasonic detection equipment

By designing an auxiliary calibration device including a telescopic chassis, an encoder, a probe wedge clamping assembly and a supporting walking assembly, the problem of inaccurate manual calibration in the existing technology is solved, and high-efficiency phased array ultrasonic testing equipment is achieved. Accurate and efficient calibration.

CN222379648UActive Publication Date: 2025-01-21CHINA PETROCHEMICAL CORP +2
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Patent Information

Application Number
CN202420693041.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-04-07
Publication Date
2025-01-21
Estimated Expiration
2034-04-07

AI Technical Summary

Technical Problem

The calibration of existing phased array ultrasonic detection equipment is mostly manual, which makes it difficult to maintain constant pressure, easily offset movement, uneven coupling layer, affecting the sound speed, sensitivity, delay and accuracy of TCG, and cannot control the amplitude of ±5. The % and depth are within the range of ±1mm, resulting in inaccurate weld detection results.

Method used

An auxiliary calibration device is designed that includes a telescopic chassis, an encoder, a probe wedge clamping component and a supporting walking component. The probe wedges of different specifications are clamped and fixed to ensure their smooth movement, and the encoder is used to record the walking distance. Implement automated calibration.

Benefits of technology

It greatly improves the accuracy and efficiency of calibration, ensures uniform movement and constant pressure of the probe wedge, improves the measurement accuracy of sound speed, sensitivity, delay and TCG, and meets the control requirements of ±5% amplitude and ±1mm depth.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides an auxiliary calibration device and calibration system for phased array ultrasonic detection equipment, and belongs to the field of calibration equipment. According to the technical scheme, the device comprises a telescopic bottom frame, an encoder arranged on the telescopic bottom frame, a probe wedge block clamping assembly and a supporting walking assembly, the probe wedge block clamping assembly comprises a plurality of clamping plates arranged on the telescopic bottom frame, and probe wedge blocks are arranged among the clamping plates. The beneficial effects of the utility model are that: simple structure, convenient to use, can clamp and fix probe wedges of different specifications, guarantee the probe wedges to move steadily, improve the calibration accuracy and calibration efficiency greatly.
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Description

Technical Field

[0001] The utility model relates to the field of calibration equipment, in particular to an auxiliary calibration device and a calibration system for phased array ultrasonic detection equipment. Background Art

[0002] Phased array ultrasonic waves are currently widely used in weld inspection of long-distance oil and gas pipelines. The calibration of the system before and after inspection is of great significance, because whether the various technical indicators and parameters of the system meet the standards and actual inspection needs will directly affect the reliability of the weld inspection results. At present, the calibration of the system is mostly done manually, with fingers pressing the probe and searching for the peak of the standard hole on the test block.

[0003] Some manufacturers have produced single auxiliary calibration devices based on their own detection systems, but there is a lack of multi-purpose auxiliary calibration devices suitable for calibration and debugging of various equipment systems of various manufacturers in China;

[0004] Currently, the calibration of phased array systems is mostly done manually. The probe is pressed by fingers, and the peak of the standard hole is searched back and forth on the test block. However, the hand pressing method cannot maintain constant pressure and is easily offset during movement, resulting in uneven coupling layers, deviations in sound velocity, sensitivity, delay, and TCG production. The amplitude of the calibration diagram cannot be controlled within ±5%, and the depth cannot be controlled within the range of ±1mm, which does not meet the standard requirements. A large number of welds on site need to be re-scanned, which ultimately leads to the failure to submit the test report on time. Utility Model Content

[0005] The utility model aims to provide an auxiliary calibration device and a calibration system for phased array ultrasonic detection equipment, which have a simple structure, are easy to use, can clamp and fix probe wedges of different specifications, ensure the smooth movement of the probe wedges, and greatly improve the calibration accuracy and calibration efficiency.

[0006] The utility model is achieved through the following measures:

[0007] An auxiliary calibration device for phased array ultrasonic detection equipment, characterized in that it comprises a telescopic chassis, an encoder arranged on the telescopic chassis, a probe wedge clamping assembly and a supporting walking assembly;

[0008] The probe wedge clamping assembly comprises a plurality of clamping plates arranged on the telescopic base frame, and probe wedges are arranged between the plurality of clamping plates.

[0009] The specific features of the utility model also include:

[0010] The telescopic chassis comprises an outer U-shaped frame and an inner U-shaped frame. A pair of outer sleeves are symmetrically arranged on both sides of the outer U-shaped frame, and a pair of inner insert rods are symmetrically arranged on both sides of the inner U-shaped frame. The inner insert rods on both sides are respectively inserted into the corresponding outer sleeves.

[0011] The free end of the outer sleeve is provided with an annular baffle, the free end of the inner rod passes through the annular baffle and is arranged inside the outer sleeve, and a limit baffle is provided;

[0012] A spring is arranged between the limit baffle and the annular baffle, and the spring is arranged inside the outer sleeve and outside the inner insertion rod.

[0013] The probe wedge clamping assembly comprises a mounting vertical rod arranged on a frame body at a diagonal position of the telescopic base frame, guide sleeves are arranged at the ends of the mounting vertical rods on both sides, an adjusting cross rod is arranged in the guide sleeve, and the clamping plate is arranged at one end of the adjusting cross rod close to the inner side of the telescopic base frame;

[0014] Preferably, the clamping plate is L-shaped.

[0015] A first threaded hole is formed on the side wall of the guide sleeve, a first fastening bolt is arranged in the first threaded hole, and an end of the first fastening bolt passes through the first threaded hole and abuts against the adjusting cross bar.

[0016] Preferably, a mounting groove is opened on the side of the outer U-shaped frame, and the encoder is arranged in the mounting groove. The wheel body of the encoder walking wheel is flush with the surface of the supporting horizontal wheel, thereby ensuring that when the supporting horizontal wheel is against the ultrasonic comparison test block, the encoder walking wheel can also be against the side of the ultrasonic comparison test block.

[0017] The supporting walking assembly comprises a plurality of side plates arranged on both sides of the telescopic chassis in the width direction, and supporting horizontal wheels are arranged at the bottom of the side plates.

[0018] A mounting seat is arranged above the supporting transverse wheel and inside the side plate, an inner supporting wheel is arranged on the mounting seat, and the inner supporting wheel is located higher than the supporting transverse wheel.

[0019] The outer sleeve end is provided with a mounting cross plate, the mounting cross plate is provided with a second threaded hole penetrating therethrough, a second fastening bolt is provided in the second threaded hole, and the end of the second fastening bolt passes through the second threaded hole and abuts against the inner rod.

[0020] Limiting strips are arranged on both sides of the adjusting cross bar, and limiting grooves are arranged on the inner wall of the guide sleeve corresponding to the positions of the limiting strips, and the limiting strips are arranged in the limiting grooves.

[0021] A calibration system comprises an ultrasonic contrast test block and a probe wedge, and also comprises an auxiliary calibration device, wherein the auxiliary calibration device is movably arranged on the top of the ultrasonic contrast test block, and the probe wedge is arranged on the auxiliary calibration device.

[0022] When calibrating the phased array ultrasonic detection equipment, first place the telescopic chassis on the top of the ultrasonic comparison test block to be used, stretch the telescopic chassis, and adjust the overall width of the telescopic chassis according to ultrasonic comparison test blocks of different specifications, so as to ensure that the supporting horizontal wheels and encoder walking wheels on both sides can abut against the side of the ultrasonic comparison test block, and at the same time, the inner supporting wheels abut against the top surface of the ultrasonic comparison test block, and then tighten the first fastening bolt to fix the position of the telescopic chassis. After the telescopic chassis is installed, it can move smoothly on the top surface of the ultrasonic comparison test block;

[0023] After the telescopic base is installed, the probe wedge of the phased array ultrasonic detection equipment is placed inside the telescopic base and between the L-shaped clamping plates on both sides, and then the positions of the L-shaped clamping plates on both sides are adjusted to clamp the probe wedge;

[0024] The staff pushes the telescopic base with one hand to move smoothly on the top surface of the ultrasonic comparison test block, records the walking distance and the horizontal moving distance through the encoder, and observes the phased array ultrasonic detection equipment map for calibration.

[0025] The utility model has the following beneficial effects: simple structure, convenient use, capable of clamping and fixing probe wedges of different specifications, ensuring the smooth movement of the probe wedges, and greatly improving the calibration accuracy and calibration efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure of embodiments 1-4 of the present utility model.

[0027] Figure 2 It is a structural schematic diagram of the main view of embodiments 1-4 of the present utility model.

[0028] Figure 3 for Figure 2 A partial enlarged view of part A in the middle.

[0029] Figure 4 It is a schematic structural diagram of the side view of embodiments 1-4 of the present utility model.

[0030] Figure 5 Schematic diagram of the internal structure of the telescopic base frame in Examples 1-4 of the present invention.

[0031] Figure 6 It is a schematic diagram of the structure of the top view of embodiments 1-4 of the utility model.

[0032] Figure 7 It is a structural schematic diagram of the use status of embodiments 1-4 of the utility model.

[0033] Figure 8 It is a structural schematic diagram of the use status of embodiments 1-4 of the utility model.

[0034] Fig. 9 It is a structural schematic diagram of the use status of embodiments 1-4 of the utility model.

[0035] Among them, the accompanying drawings are marked as follows: 1. telescopic base; 2. probe wedge clamping assembly; 201. installation vertical rod; 202. guide sleeve; 203. adjustment cross bar; 204. clamping plate; 205. first fastening bolt; 3. support walking assembly; 301. side plate; 302. support cross wheel; 303. mounting seat; 304. inner support wheel; 4. encoder; 401. encoder walking wheel; 5. outer U-shaped frame; 501. outer sleeve; 502. annular baffle; 6. inner U-shaped frame; 601. inner plug rod; 602. limit baffle; 7. installation cross plate; 8. second fastening bolt; 9. spring; 10. ultrasonic comparison test block; 11. probe wedge. DETAILED DESCRIPTION

[0036] In order to clearly illustrate the technical features of this solution, this solution is described below through a specific implementation method.

[0037] Example 1

[0038] See also Figure 1-9 , an auxiliary calibration device for phased array ultrasonic detection equipment, comprising a telescopic base frame 1, an encoder 4 arranged on the telescopic base frame 1, a probe wedge 11 clamping assembly 2 and a supporting walking assembly 3;

[0039] The probe wedge 11 clamping assembly 2 includes a plurality of clamping plates 204 arranged on the telescopic base frame 1 , and the probe wedge 11 is arranged between the plurality of clamping plates 204 .

[0040] The telescopic chassis 1 includes an outer U-shaped frame 5 and an inner U-shaped frame 6. A pair of outer sleeves 501 are symmetrically arranged on both sides of the outer U-shaped frame 5, and a pair of inner plug rods 601 are symmetrically arranged on both sides of the inner U-shaped frame 6. The inner plug rods 601 on both sides are respectively inserted into the corresponding outer sleeves 501.

[0041] The free end of the outer sleeve 501 is provided with an annular baffle 502, the free end of the inner rod 601 passes through the annular baffle 502 and is arranged inside the outer sleeve 501, and a limit baffle 602 is provided;

[0042] A spring 9 is arranged between the limiting baffle 602 and the annular baffle 502 . The spring 9 is arranged inside the outer sleeve 501 and outside the inner insertion rod 601 .

[0043] The probe wedge 11 clamping assembly 2 includes a mounting vertical rod 201 arranged on a frame body at a diagonal position of the telescopic base frame 1, and guide sleeves 202 are arranged at the ends of the mounting vertical rods 201 on both sides, and an adjusting cross rod 203 is arranged in the guide sleeve 202, and a clamping plate 204 is arranged at one end of the adjusting cross rod 203 close to the inner side of the telescopic base frame 1;

[0044] Preferably, the splint is L-shaped.

[0045] A first threaded hole is formed on the side wall of the guide sleeve 202 . A first fastening bolt 205 is disposed in the first threaded hole. The end of the first fastening bolt 205 passes through the first threaded hole and abuts against the adjusting cross bar 203 .

[0046] Preferably, a mounting groove is opened on the side of the outer U-shaped frame 5, and an encoder 4 is arranged in the mounting groove. The wheel body of the encoder walking wheel 401 is flush with the surface of the supporting horizontal wheel 302, thereby ensuring that when the supporting horizontal wheel 302 is against the ultrasonic comparison test block 10, the encoder walking wheel 401 can also be against the side of the ultrasonic comparison test block 10.

[0047] The supporting walking assembly 3 comprises a plurality of side plates 301 arranged on both sides of the telescopic chassis 1 in the width direction, and supporting horizontal wheels 302 are arranged at the bottom of the side plates 301 .

[0048] A mounting seat 303 is provided above the supporting transverse wheel 302 and inside the side plate 301 , and an inner supporting wheel 304 is provided on the mounting seat 303 . The inner supporting wheel 304 is located higher than the supporting transverse wheel 302 .

[0049] A mounting cross plate 7 is disposed at the end of the outer sleeve 501 . A second threaded hole is formed on the mounting cross plate 7 . A second fastening bolt 8 is disposed in the second threaded hole. The end of the second fastening bolt 8 passes through the second threaded hole and abuts against the inner rod 601 .

[0050] Limiting strips are arranged on both sides of the adjusting cross bar 203, and limiting grooves are arranged on the inner wall of the guide sleeve 202 corresponding to the positions of the limiting strips, and the limiting strips are arranged in the limiting grooves.

[0051] A calibration system includes an ultrasonic comparison test block 10 and a probe wedge 11, and also includes an auxiliary calibration device. The auxiliary calibration device is movably arranged on the top of the ultrasonic comparison test block 10, and the probe wedge 11 is arranged on the auxiliary calibration device.

[0052] When calibrating the phased array ultrasonic testing equipment, first place the telescopic chassis 1 on top of the ultrasonic comparison test block 10 to be used, stretch the telescopic chassis 1, and adjust the overall width of the telescopic chassis 1 according to the ultrasonic comparison test blocks 10 of different specifications, so as to ensure that the supporting horizontal wheels 302 on both sides and the encoder walking wheels 401 can be against the side of the ultrasonic comparison test block 10, and at the same time, the inner supporting wheels 304 are against the top surface of the ultrasonic comparison test block 10, and then tighten the first fastening bolts 205 to fix the position of the telescopic chassis 1. After installation, the telescopic chassis 1 can move smoothly on the top surface of the ultrasonic comparison test block 10;

[0053] After the telescopic chassis 1 is installed, the probe wedge 11 of the phased array ultrasonic testing equipment is placed inside the telescopic chassis 1 and between the L-shaped clamping plates 204 on both sides, and then the positions of the L-shaped clamping plates 204 on both sides are adjusted to clamp the probe wedge 11;

[0054] The staff pushes the telescopic chassis 1 with one hand to move smoothly on the top surface of the ultrasonic comparison test block 10, records the walking distance and the horizontal moving distance through the encoder 4, and observes the phased array ultrasonic detection equipment map for calibration.

[0055] Example 2

[0056] See also Figure 1-9 , an auxiliary calibration device for phased array ultrasonic detection equipment, comprising a telescopic base frame 1, an encoder 4 arranged on the telescopic base frame 1, a probe wedge 11 clamping assembly 2 and a supporting walking assembly 3;

[0057] The probe wedge 11 clamping assembly 2 includes a plurality of clamping plates 204 arranged on the telescopic base frame 1 , and the probe wedge 11 is arranged between the plurality of clamping plates 204 .

[0058] The telescopic chassis 1 includes an outer U-shaped frame 5 and an inner U-shaped frame 6. A pair of outer sleeves 501 are symmetrically arranged on both sides of the outer U-shaped frame 5, and a pair of inner plug rods 601 are symmetrically arranged on both sides of the inner U-shaped frame 6. The inner plug rods 601 on both sides are respectively inserted into the corresponding outer sleeves 501.

[0059] The free end of the outer sleeve 501 is provided with an annular baffle 502, the free end of the inner rod 601 passes through the annular baffle 502 and is arranged inside the outer sleeve 501, and a limit baffle 602 is provided;

[0060] A spring 9 is arranged between the limiting baffle 602 and the annular baffle 502 . The spring 9 is arranged inside the outer sleeve 501 and outside the inner insertion rod 601 .

[0061] The probe wedge 11 clamping assembly 2 includes a mounting vertical rod 201 arranged on a frame body at a diagonal position of the telescopic base frame 1, and guide sleeves 202 are arranged at the ends of the mounting vertical rods 201 on both sides, and an adjusting cross rod 203 is arranged in the guide sleeve 202, and a clamping plate 204 is arranged at one end of the adjusting cross rod 203 close to the inner side of the telescopic base frame 1;

[0062] Preferably, the splint is L-shaped.

[0063] A calibration system includes an ultrasonic comparison test block 10 and a probe wedge 11, and also includes an auxiliary calibration device. The auxiliary calibration device is movably arranged on the top of the ultrasonic comparison test block 10, and the probe wedge 11 is arranged on the auxiliary calibration device.

[0064] Example 3

[0065] See also Figure 1-9 , an auxiliary calibration device for phased array ultrasonic detection equipment, comprising a telescopic base frame 1, an encoder 4 arranged on the telescopic base frame 1, a probe wedge 11 clamping assembly 2 and a supporting walking assembly 3;

[0066] The probe wedge 11 clamping assembly 2 includes a plurality of clamping plates 204 arranged on the telescopic base frame 1 , and the probe wedge 11 is arranged between the plurality of clamping plates 204 .

[0067] The telescopic chassis 1 includes an outer U-shaped frame 5 and an inner U-shaped frame 6. A pair of outer sleeves 501 are symmetrically arranged on both sides of the outer U-shaped frame 5, and a pair of inner plug rods 601 are symmetrically arranged on both sides of the inner U-shaped frame 6. The inner plug rods 601 on both sides are respectively inserted into the corresponding outer sleeves 501.

[0068] The free end of the outer sleeve 501 is provided with an annular baffle 502, the free end of the inner rod 601 passes through the annular baffle 502 and is arranged inside the outer sleeve 501, and a limit baffle 602 is provided;

[0069] A spring 9 is arranged between the limiting baffle 602 and the annular baffle 502 . The spring 9 is arranged inside the outer sleeve 501 and outside the inner insertion rod 601 .

[0070] The probe wedge 11 clamping assembly 2 includes a mounting vertical rod 201 arranged on a frame body at a diagonal position of the telescopic base frame 1, and guide sleeves 202 are arranged at the ends of the mounting vertical rods 201 on both sides, and an adjusting cross rod 203 is arranged in the guide sleeve 202, and a clamping plate 204 is arranged at one end of the adjusting cross rod 203 close to the inner side of the telescopic base frame 1;

[0071] Preferably, the splint is L-shaped.

[0072] A first threaded hole is formed on the side wall of the guide sleeve 202 . A first fastening bolt 205 is disposed in the first threaded hole. The end of the first fastening bolt 205 passes through the first threaded hole and abuts against the adjusting cross bar 203 .

[0073] Preferably, a mounting groove is opened on the side of the outer U-shaped frame 5, and an encoder 4 is arranged in the mounting groove. The wheel body of the encoder walking wheel 401 is flush with the surface of the supporting horizontal wheel 302, thereby ensuring that when the supporting horizontal wheel 302 is against the ultrasonic comparison test block 10, the encoder walking wheel 401 can also be against the side of the ultrasonic comparison test block 10.

[0074] The supporting walking assembly 3 comprises a plurality of side plates 301 arranged on both sides of the telescopic chassis 1 in the width direction, and supporting horizontal wheels 302 are arranged at the bottom of the side plates 301 .

[0075] A mounting seat 303 is provided above the supporting transverse wheel 302 and inside the side plate 301 , and an inner supporting wheel 304 is provided on the mounting seat 303 . The inner supporting wheel 304 is located higher than the supporting transverse wheel 302 .

[0076] A calibration system includes an ultrasonic comparison test block 10 and a probe wedge 11, and also includes an auxiliary calibration device. The auxiliary calibration device is movably arranged on the top of the ultrasonic comparison test block 10, and the probe wedge 11 is arranged on the auxiliary calibration device.

[0077] Example 4

[0078] See also Figure 1-9 , an auxiliary calibration device for phased array ultrasonic detection equipment, comprising a telescopic base frame 1, an encoder 4 arranged on the telescopic base frame 1, a probe wedge 11 clamping assembly 2 and a supporting walking assembly 3;

[0079] The probe wedge 11 clamping assembly 2 includes a plurality of clamping plates 204 arranged on the telescopic base frame 1 , and the probe wedge 11 is arranged between the plurality of clamping plates 204 .

[0080] A calibration system includes an ultrasonic comparison test block 10 and a probe wedge 11, and also includes an auxiliary calibration device. The auxiliary calibration device is movably arranged on the top of the ultrasonic comparison test block 10, and the probe wedge 11 is arranged on the auxiliary calibration device.

[0081] Technical features not described in the present invention can be achieved through or by adopting existing technologies, and will not be elaborated here. Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention should also fall within the scope of protection of the present invention.

Claims

1. An auxiliary calibration device for phased array ultrasonic detection equipment, characterized in that: It includes a telescopic base, an encoder arranged on the telescopic base, a probe wedge clamping assembly and a supporting walking assembly; The probe wedge clamping assembly comprises a plurality of clamping plates arranged on the telescopic base frame, and probe wedges are arranged between the plurality of clamping plates.

2. The auxiliary calibration device for phased array ultrasonic detection equipment according to claim 1, characterized in that: The telescopic chassis comprises an outer U-shaped frame and an inner U-shaped frame. A pair of outer sleeves are symmetrically arranged on both sides of the outer U-shaped frame, and a pair of inner insert rods are symmetrically arranged on both sides of the inner U-shaped frame. The inner insert rods on both sides are respectively inserted into the corresponding outer sleeves.

3. The auxiliary calibration device for phased array ultrasonic detection equipment according to claim 2, characterized in that: The free end of the outer sleeve is provided with an annular baffle, the free end of the inner rod passes through the annular baffle and is arranged inside the outer sleeve, and a limit baffle is provided; A spring is arranged between the limit baffle and the annular baffle, and the spring is arranged inside the outer sleeve and outside the inner insertion rod.

4. The auxiliary calibration device for phased array ultrasonic detection equipment according to claim 3, characterized in that: The probe wedge clamping assembly includes a mounting vertical rod arranged on a frame body at a diagonal position of the telescopic base, guide sleeves are arranged at the ends of the mounting vertical rods on both sides, an adjusting cross rod is arranged in the guide sleeve, and the clamping plate is arranged at one end of the adjusting cross rod close to the inner side of the telescopic base.

5. The auxiliary calibration device for phased array ultrasonic detection equipment according to claim 4, characterized in that: A first threaded hole is formed on the side wall of the guide sleeve, a first fastening bolt is arranged in the first threaded hole, and an end of the first fastening bolt passes through the first threaded hole and abuts against the adjusting cross bar.

6. The auxiliary calibration device for phased array ultrasonic detection equipment according to claim 1, characterized in that: The supporting walking assembly comprises a plurality of side plates arranged on both sides of the telescopic chassis in the width direction, and supporting horizontal wheels are arranged at the bottom of the side plates.

7. The auxiliary calibration device for phased array ultrasonic detection equipment according to claim 6, characterized in that: A mounting seat is arranged above the supporting transverse wheel and inside the side plate, an inner supporting wheel is arranged on the mounting seat, and the inner supporting wheel is located higher than the supporting transverse wheel.

8. The auxiliary calibration device for phased array ultrasonic detection equipment according to claim 5, characterized in that: The outer sleeve end is provided with a mounting cross plate, the mounting cross plate is provided with a second threaded hole penetrating therethrough, a second fastening bolt is provided in the second threaded hole, and the end of the second fastening bolt passes through the second threaded hole and abuts against the inner rod.

9. The auxiliary calibration device for phased array ultrasonic detection equipment according to claim 4, characterized in that: Limiting strips are arranged on both sides of the adjusting cross bar, and limiting grooves are arranged on the inner wall of the guide sleeve corresponding to the positions of the limiting strips, and the limiting strips are arranged in the limiting grooves.

10. A calibration system comprising an ultrasonic comparison block and a probe wedge, characterized in that: It also comprises the auxiliary calibration device as claimed in any one of claims 1 to 9, wherein the auxiliary calibration device is movably arranged on the top of the ultrasonic comparison test block, and the probe wedge is arranged on the auxiliary calibration device.