CN218298145U

CN218298145U - Ultrasonic detector calibrating device

Info

Publication number: CN218298145U
Application number: CN202221426378.4U
Authority: CN
Inventors: 章莹; 于琳佳; 唐佳; 胡玮; 沈思成; 张胜瑶
Original assignee: Zhejiang Sanxin Detection Calibration Co ltd
Current assignee: Zhejiang Sanxin Detection Calibration Co ltd
Priority date: 2022-06-08
Filing date: 2022-06-08
Publication date: 2023-01-13
Anticipated expiration: 2032-06-08

Abstract

The utility model relates to an ultrasonic detector calibration device, which comprises a water tank, wherein a guide rail is arranged on the water tank, a reference sliding block is arranged on the guide rail, and a fixing piece for clamping a receiving transducer and a transmitting transducer is arranged on the reference sliding block; the guide rail is provided with a scale which comprises a positive scale and a negative scale which are symmetrically arranged; the fixed part comprises a body, one end of the body is provided with a movable jaw, the other end of the body is provided with a fixed jaw, the movable jaw is provided with thread teeth, the upper surface of the body is provided with a worm, and the worm is meshed with the thread teeth. The mounting with receive, send out the transducer and be connected, receive, send out the transducer upper end and be equipped with the wire of being connected with the sound wave detector, there is the protective housing at the outer parcel of wire periphery, is carved with the scale on the protective housing. The utility model discloses effectively solve the problem that ultrasonic detector calibrating device calibration accuracy is low, simple structure simultaneously, it is easy and simple to handle, can be quick, convenient to sound wave probe from launching to receiving instrument system time delay and rectify, can satisfy relevant calibration standard's requirement.

Description

Ultrasonic detector calibrating device

Technical Field

The utility model relates to a sound wave detector field specifically is an ultrasonic detector calibrating device.

Background

Ultrasonic detection is an important means and method in the technical field of nondestructive detection, and the method utilizes the characteristics of an acoustic signal reflected by an interface (such as cracks and air hole defects) when ultrasonic waves propagate in a material or the different performances of attenuation characteristics of acoustic energy in different media, and displays a reflected wave (or transmitted wave) signal or a pattern through an electronic display to detect an object to be detected. The ultrasonic detection technology gradually becomes a nondestructive detection technology with the highest use frequency and the fastest development at home and abroad due to the advantages of simple equipment, high detection sensitivity, high use safety, easiness in realizing automation and the like, and is widely applied to quality monitoring and safety guarantee of various industries.

The system delay time t0 from transmission to reception of the ultrasonic detector should be calibrated before detection using the ultrasonic detector. Namely: the system delay time of the ultrasonic detector is calibrated every time the ultrasonic detector is used. The calibration method is that the transmitting and receiving probes of the ultrasonic detector are parallelly arranged at the same height in clear water, the distance between the two transducers is gradually increased from the left to the right at the center of the transmitting and receiving probes, and the corresponding sound time is measured in a fixed amplitude manner; and then, respectively making linear regression graphs by respectively representing the distance and the sound time in the longitudinal and transverse directions, wherein the intercept on the transverse axis is t0 in the sound time, and in order to ensure the test precision, the measurement error of the distance between the two transducers is not more than 0.5 percent, and the measurement points are not less than 5 points.

In order to solve the above problems, workers in the field have made various studies on ultrasonic detector calibration devices:

chinese patent publication No. CN206235600U discloses a muffling water tank device for calibrating delay time of an ultrasonic detector system, which comprises a scale, a guide rail, a reference slider, a test rod clamp for receiving and sending transducers, a water tank, and muffling rubber, wherein the scale is adhered to the guide rail, the reference slider (connected to the guide rail, the test rod clamp for receiving and sending transducers passes through a ring fastener reserved on the reference slider and is fixed on the reference slider, the scale, the guide rail, the reference slider, the test rod clamp for receiving and sending transducers form a whole and are fixed on a side wall of the muffling water tank through the test rod clamp for receiving and sending transducers, and the muffling rubber is adhered to an inner wall of the water tank.

Therefore, there is a need for further improvement of the calibration apparatus of ultrasonic inspection apparatus to solve the above-mentioned drawbacks.

Disclosure of Invention

The purpose of the application is: the ultrasonic detector calibrating device has the advantages that the defects of the prior art and application are overcome, the problem of low calibrating accuracy of the ultrasonic detector calibrating device is effectively solved, meanwhile, the ultrasonic detector calibrating device is simple in structure and easy and convenient to operate, the acoustic wave probe can be quickly and conveniently calibrated from the time delay from the emission to the receiving instrument system, and the requirements of relevant calibration standards can be met.

The calibration device of the ultrasonic detector comprises a water tank, wherein a guide rail is arranged on the water tank, a reference sliding block capable of moving transversely is arranged on the guide rail, and a fixing piece used for clamping a receiving transducer and a transmitting transducer is arranged on the reference sliding block; wherein:

the guide rail is provided with a scale which comprises a positive scale and a negative scale which are symmetrically arranged;

the mounting includes the body, body one end is equipped with movable vice jaw, and the other end is equipped with fixed vice jaw, movable vice jaw is equipped with the thread tooth, be equipped with the worm on the body upper surface, the worm meshes with the thread tooth mutually.

Preferably, the water tank is of a cuboid structure with an opening at the top, wherein the water tank is 1200mm-2000mm long, 500mm-1200mm wide and 400mm-1000mm high.

Preferably, the guide rail is transversely arranged on the middle point of the side length of the water tank, and a level gauge is arranged at the horizontal center of the guide rail.

Preferably, the guide rail is of a cross structure and is fixedly connected with the water tank, and a level gauge is arranged at the horizontal center of the guide rail.

Preferably, the mounting with receive, send out the transducer and connect, receive, send out transducer upper end and be equipped with the wire of being connected with the sound wave detector the outer periphery parcel of wire has the protective housing, be carved with the scale on the protective housing.

Preferably, the bottom of the water tank is provided with a base, and the base is provided with adjustable feet.

Preferably, the inner wall of the water tank is pasted with noise elimination rubber.

Preferably, a screw hole is formed in the surface of the body, a screw with a handle is mounted on the screw hole, and the screw is connected with the movable jaw.

Preferably, a non-slip pad is arranged on one side of the movable jaw corresponding to the fixed jaw.

Compared with the prior art, the application has the following obvious advantages and effects:

1. the utility model discloses in, through guide rail, benchmark slider, mounting and receive, send out mutually supporting between the transducer, simple structure, easy and simple to handle, can be quick, convenient rectify sound wave probe from launching to receiving instrument system time delay, can satisfy relevant calibration standard's requirement.

2. The utility model discloses in, the scale is including the positive scale and the negative scale that the symmetry set up, can accurate control receive, send out the distance between two transducers, and then can improve the measuring precision.

3. The utility model discloses in, the mounting with receive, send out the transducer and connect, receive, send out transducer upper end and be equipped with the wire of being connected with the sound wave detector, there is the protective housing surrounding parcel outside the wire, be carved with the scale on the protective housing. Through being equipped with the scale on the protective housing, guaranteed to receive, send the transducer highly unanimous in aqueous medium, improved the measuring precision.

Drawings

FIG. 1 is a layout diagram of the whole structure of the ultrasonic detector calibration device of the present application.

Fig. 2 is a schematic view of the structure of the scale and level in this application.

Fig. 3 is a schematic view of the structure of the fixing member in the present application.

Fig. 4 is a schematic structural diagram of the fixing member and the transmitting/receiving transducer in the present application.

Fig. 5 is a schematic structural view of a guide rail provided in the second embodiment of the present application.

Reference numbers in this application:

the device comprises a water tank 1, a guide rail 2, a scale 21, a positive scale 211, a negative scale 212, a level gauge 22, a reference sliding block 3, a fixed part 4, a movable jaw 41, a fixed jaw 42, a worm 43, a screw 44, an anti-skid pad 45, a receiving transducer 5, a transmitting transducer 5, a base 6, an adjustable foot 7, an ultrasonic detector 8 and a computer 9.

Detailed Description

Specific embodiments thereof are described below in conjunction with the following description and the accompanying drawings to teach those skilled in the art how to make and use the best mode of the present application. For the purpose of teaching application principles, the following conventional aspects have been simplified or omitted. Those skilled in the art will appreciate variations from these embodiments that fall within the scope of the application. Those skilled in the art will appreciate that the features described below can be combined in various ways to form multiple variations of the present application. In the present application, the terms "upper", "lower", "left", "right", "middle" and "one" are used for clarity of description, and are not used to limit the scope of the invention, and the relative relationship between the terms and the corresponding terms may be changed or adjusted without substantial technical change. Thus, the present application is not limited to the specific embodiments described below, but only by the claims and their equivalents.

Example one

Fig. 1 to 4 show that, a specific embodiment of a calibration device for an ultrasonic detector according to the present application includes a water tank 1, a guide rail 2 is disposed on the water tank 1, a reference slider 3 is mounted on the guide rail 2, and a fixing member 4 for placing a receiving transducer 5 and a transmitting transducer 5 is disposed on the reference slider 3; a scale 21 is arranged on the guide rail 2, and the scale 21 comprises a positive graduated scale 211 and a negative graduated scale 212 which are symmetrically arranged; the fixed part 4 comprises a body, one end of the body is provided with a movable jaw 41, the other end of the body is provided with a fixed jaw 42, the movable jaw 41 is provided with thread teeth, the upper surface of the body is provided with a worm 43, and the worm 43 is meshed with the thread teeth. The fixing piece 4 is connected with the receiving and transmitting transducer 5, a lead connected with the sound wave detector is arranged at the upper end of the receiving and transmitting transducer 5, a protective shell is wrapped around the lead, and scales are carved on the protective shell. The utility model discloses effectively solve the problem that 8 calibrating device of ultrasonic detector calibration accuracy is low, simple structure simultaneously, it is easy and simple to handle, can be quick, convenient to sound wave probe from launching to receiving instrument system time delay and rectify, can satisfy relevant calibration standard's requirement.

Specifically, it should be noted that, as shown in fig. 1, in the embodiment of the present application, an ultrasonic detector calibration apparatus includes a water tank 1, a guide rail 2 is provided on the water tank 1, a reference slider 3 capable of moving laterally is installed on the guide rail 2, a fixing member 4 for placing a receiving transducer 5 and a transmitting transducer 5 is provided on the reference slider 3, and the acoustic probe can be quickly and conveniently calibrated from transmitting to receiving instrument system through the mutual cooperation between the guide rail 2, the reference slider 3, the fixing member 4 and the receiving transducer 5.

It should be noted that, as shown in fig. 2, in the embodiment of the present application, the guide rail 2 is transversely disposed on a midpoint of a side length of the water tank 1, and a level 22 is disposed at a horizontal center of the guide rail 2. Be equipped with scale 21 on guide rail 2, scale 21 includes positive scale 211 and the negative scale 212 that bilateral symmetry set up, and every check scale 21 is 10mm, through positive scale 211 and negative scale 212, can accurate control receive, send the distance between two transducers, and then can improve measuring precision, is equipped with spirit level 22 through 2 horizontal center departments of guide rail, can ensure that basin 1 is in the horizontality, avoids measuring the error that brings.

It should be noted that, as shown in fig. 3 and fig. 4, in the embodiment of the present application, the fixing element 4 includes a body, one end of the body is provided with a movable jaw 41, the other end of the body is provided with a fixed jaw 42, the fixed jaw 42 and the body are integrally arranged, and a bayonet of the fixing element 4 is formed by a distance between the movable jaw 41 and the fixed jaw 42. The movable jaw 41 is provided with thread teeth, the upper surface of the body is provided with a worm 43, the worm 43 is meshed with the thread teeth, and one side of the movable jaw 41 corresponding to the fixed jaw 42 is provided with a rubber anti-skid pad 45, so that the anti-skid function is achieved, and a fixed object can be protected. The movable jaw 41 is moved laterally by driving the worm 43, thereby clamping the transducer 5. Receive, send transducer 5 upper end to be equipped with the wire of being connected with the sound wave detector the outer periphery parcel of wire one end has the protective housing, report be carved with the scale on the protective housing, scribble water proof coating on the protective housing. The protective shell is clamped through the fixing piece 4, and the scales on the protective shell are read, so that the receiving transducer 5 and the transmitting transducer 5 are kept in the same height in the water medium, and the measuring accuracy is improved. The surface of the body is provided with a screw hole, a screw 44 with a handle is arranged on the screw hole, and the screw 44 is connected with the movable jaw 41. The bayonet of the fixing part 4 is adjusted to the size corresponding to the protective shell, and then the movable jaw 41 is locked through the locking screw 44, so that the size of the bayonet of the fixing part 4 is kept to be matched with the size of the protective shell and cannot be loosened, the consistency of the height of the receiving transducer 5 and the transmitting transducer 5 in the water medium is ensured, and the measuring accuracy is improved.

Further, as shown in fig. 1, in the embodiment of the present application, the water tank 1 is a rectangular parallelepiped structure with an open top, wherein the length of the water tank 1 is 1200mm to 2000mm, the width is 500mm to 1200mm, and the height is 400mm to 1000mm, and in the embodiment of the present application, the length, the width and the height of the water tank 1 are 2000mm, 1200mm and 700mm, respectively. The bottom of the water tank 1 is provided with a base 6, and the base 6 is provided with adjustable feet 7. The height-adjustable ground feet are arranged on the base 6 of the water tank 1, and the level gauge 22 is arranged on the guide rail 2, so that the water in the water tank 1 is always kept in a horizontal state, and the reduction of the measurement precision caused by the inconsistent height of the receiving transducer 5 and the transmitting transducer 5 is avoided. Silencing rubber is stuck on the inner wall of the water tank 1. Reflection and refraction echoes caused by the annular space are effectively eliminated, and the testing precision of the two transducers is further ensured.

Example two

Fig. 5 is a schematic structural view of a guide rail provided in the second embodiment of the present application. As shown in fig. 5, the same components as those in the first embodiment are denoted by the same reference numerals as those in the first embodiment, and all the features described in the first embodiment are included, which are not described again. The difference between the first embodiment and the second embodiment is that: the guide rail 2 is of a cross structure and is fixedly connected with the water tank 1, and a level gauge 22 is arranged at the horizontal center of the guide rail 2. The guide rail 2 is of a cross structure, four ports of the guide rail 2 are fixedly connected with the middle point of the side length of the water tank 1, and a level gauge 22 is arranged at the horizontal center of the guide rail. Two reference sliding blocks 3 are respectively arranged in the transverse axis direction and the longitudinal axis direction of the guide rail, four reference sliding blocks 3 are arranged, fixing pieces 4 are fixed on the reference sliding blocks 3, and when the acoustic wave detector is used, the acoustic wave detector can be calibrated in the transverse axis direction and the longitudinal axis direction, so that calibration errors are reduced, and the calibration accuracy of the acoustic wave detector is improved.

The utility model discloses when using: firstly, a guide rail 2 is arranged on the middle point of the side length of a water tank 1, a reference sliding block 3 capable of moving transversely is arranged on the guide rail 2, and a fixing part 4 for placing a receiving transducer 5 and a transmitting transducer 5 is arranged on the reference sliding block 3; then, a protective shell of a lead connected with the upper end of the receiving and transmitting transducer 5 is placed at a bayonet of the fixed part 4, the receiving and transmitting transducer 5 is placed at the same height in clear water according to the scale on the protective shell, the movable jaw 41 is moved towards the fixed jaw 42 by adjusting the worm 43 until the protective shell is fixed, and meanwhile, the movable jaw 41 is locked by rotating the locking screw 44, so that the size of the bayonet of the fixed part 4 is kept to be matched with the size of the protective shell and cannot be loosened; and then, the reference slide block 3 on the guide rail 2 with the scale 21 is adjusted to ensure that the distance between the receiving transducer 5 and the transmitting transducer 5 is 200mm, namely, the reference slide block 3 positioned on the left side of the zero scale value is moved to the 100mm scale value of the positive scale 211 leftwards, the reference slide block 3 positioned on the right side of the zero scale value is moved to the-100 mm scale value of the negative scale 212 rightwards to measure the sound time, and the sound time is connected to an ultrasonic detector, and sound wave data are collected and stored through the computer 9. Finally, the distances between the transmitting and receiving transducers 5 are adjusted in sequence, and when the sounds with the distances of 300mm, 400mm, 500mm and 600mm are measured in sequence, the sound time obtained by theoretical calculation is subtracted from the measured sound time, and the sound time deviation of the ultrasonic detector 87 is obtained. The utility model discloses effectively solve the problem that 8 calibrating device calibration accuracy of ultrasonic detector are low, simple structure simultaneously, it is easy and simple to handle, can be quick, convenient correct the sound wave probe from transmission to receiving instrument system time delay, can satisfy relevant calibration standard's requirement.

Any modification, equivalent replacement, improvement, etc. made within the concept and principle of the application should be included in the scope of the claims of the present application as can be easily conceived by those skilled in the art.

Claims

1. A calibration device of an ultrasonic detector is characterized by comprising a water tank, wherein a guide rail is arranged on the water tank, a reference sliding block capable of moving transversely is arranged on the guide rail, and a fixing piece for clamping a receiving transducer and a transmitting transducer is arranged on the reference sliding block; wherein:

the fixed part comprises a body, one end of the body is provided with a movable jaw, the other end of the body is provided with a fixed jaw, the movable jaw is provided with thread teeth, the upper surface of the body is provided with a worm, and the worm is meshed with the thread teeth;

the guide rail is of a cross structure and is fixedly connected with the water tank, and a level gauge is arranged at the horizontal center of the guide rail.

2. An ultrasonic meter calibration device according to claim 1, wherein: the water tank is of a cuboid structure with an opening at the top, wherein the water tank is 1200mm-2000mm long, 500mm-1200mm wide and 400mm-1000mm high.

3. An ultrasonic meter calibration device according to claim 1, wherein: the mounting with receive, send out the transducer and connect, receive, send out transducer upper end and be equipped with the wire of being connected with the sound wave detector the periphery parcel has the protective housing outside the wire, be carved with the scale on the protective housing.

4. An ultrasonic meter calibration device according to claim 1, wherein: the bottom of the water tank is provided with a base, and the base is provided with adjustable feet.

5. An ultrasonic meter calibration device according to claim 1, wherein: the inner wall of the water tank is adhered with sound-deadening rubber.

6. An ultrasonic meter calibration device according to claim 1, wherein: the surface of the body is provided with a screw hole, the screw hole is provided with a screw with a handle, and the screw is connected with the movable jaw.

7. An ultrasonic meter calibration device according to claim 1, wherein: and an anti-slip pad is arranged on one side of the movable jaw corresponding to the fixed jaw.