CN219265257U - Ultrasonic thickness gauge with calibration structure - Google Patents

Abstract

The utility model discloses an ultrasonic thickness gauge with a calibration structure, which is characterized in that a single probe is used for measuring thickness of a target body by utilizing ultrasonic waves, the ultrasonic thickness gauge comprises an integrated machine body and an ultrasonic probe, the ultrasonic probe is provided with a detection end face, the detection end face is provided with a transmitting part and a receiving part, and the ultrasonic probe is connected with a signal port arranged on the machine body through a cable; the machine body is provided with a placing groove on the front surface, a calibration block is arranged in the placing groove and detachably connected with the placing groove, and a gap is reserved between the end face of the bottom of the calibration block and the inner bottom surface of the placing groove when the calibration block is arranged in the placing groove.

Description

Ultrasonic thickness gauge with calibration structure

Technical Field

The utility model belongs to the technical field of detection equipment, and particularly relates to an ultrasonic thickness gauge with a calibration structure.

Background

The thickness gauge is a gauge for measuring the thickness of a material and an object. It is common in industrial production to measure the thickness of products (e.g. steel sheet, steel strip, film, paper, metal foil, etc.) continuously or by sampling. Among such meters are radiation thickness meters that utilize the transmission characteristics of alpha rays, beta rays, gamma rays; there are ultrasonic thickness gauges that use the variation of ultrasonic frequency; there are eddy current thickness gauges that utilize the eddy current principle; there are also thickness gauges and the like that utilize the principle of mechanical contact measurement. An instrument for determining the thickness of the material itself or the thickness of the coating on the surface of the material. Some components must be measured for thickness during manufacture and maintenance to understand thickness specification of the material, uniformity of each point and corrosion and abrasion degree of the material; the thickness of the coating layer on the surface of the material is sometimes measured to ensure the quality and production safety of the product. According to different measurement principles, four types of common thickness gauges include ultrasound, magnetism, eddy current, and isotopes.

Ultrasonic thickness gauges ultrasonic sound velocity is different in various media, but sound velocity is a constant in the same medium. The ultrasonic wave is reflected when it propagates in the medium and encounters the second medium, and the time between the transmission and reception of the ultrasonic pulse is measured, i.e. the time between the transmission and reception is converted into the thickness. The most widely used in the power industry is this type of thickness gauge. The method is commonly used for measuring the thickness of boiler barrels, heating surface pipes, pipelines and the like, and is also used for checking the structural size of workpieces and the like. Such gauges are often portable, are close in volume to small semiconductor radios, and display thickness values are often digital. The maximum measured thickness of the steel is about 2000mm, and the accuracy is +/-0.01- +/-0.1 mm.

While ultrasonic thickness gauges are generally classified into three types, namely resonance type, pulse reflection type and lamb wave type. The portable miniature ultrasonic thickness gauge generally adopts a pulse reflection type, namely a single probe, when ultrasonic pulses emitted by the probe reach a material interface through a measured object, the pulses are reflected back to the probe, and the thickness of the measured material is determined by accurately measuring the propagation time of ultrasonic waves in the material. The thickness detection can be carried out on the structure of various materials by the instrument, but the calibration is needed before measurement, namely, the calibration block which is made of homogeneous materials and has a certain thickness value is calibrated, the corresponding material number is input, then the ultrasonic probe is coated with the couplant and then attached to the surface of the calibration block, and the detected thickness value is adjusted and calibrated. But not only need to measure thickness to the structure of single material in the testing process, if meet the structure of different materials and carry out the thickness measurement, need the calibration piece of corresponding material and calibrate, and carry the calibration piece alone and be inconvenient for this kind of small-size handheld supersound thickness measuring equipment, and do not have the platform of conveniently placing the calibration piece and measuring outdoors, if directly place on other structures and produce the error easily, lead to the calibration failure to influence detection accuracy.

Disclosure of Invention

In order to solve the problems in the prior art, the utility model provides the ultrasonic thickness gauge with the calibration structure, and the detachable calibration block is arranged on the machine body by optimizing the structure of the ultrasonic thickness gauge, and a space for placing the calibration block is provided, so that the calibration block with different materials is convenient to replace and carry for calibration.

The technical scheme adopted by the utility model is as follows:

the utility model provides an ultrasonic thickness gauge with a calibration structure, which is characterized in that a single probe is used for measuring thickness of a target body by utilizing ultrasonic waves, the ultrasonic thickness gauge comprises an integrated machine body and an ultrasonic probe, the ultrasonic probe is provided with a detection end face, the detection end face is provided with a transmitting part and a receiving part, and the ultrasonic probe is connected with a signal port arranged on the machine body through a cable;

the machine body is provided with a placing groove on the front surface, a calibration block is arranged in the placing groove and detachably connected with the placing groove, and a gap is reserved between the end face of the bottom of the calibration block and the inner bottom surface of the placing groove when the calibration block is arranged in the placing groove.

With reference to the first aspect, the present utility model provides a first implementation manner of the first aspect, where the placement grooves are several.

With reference to the first implementation manner of the first aspect, the present utility model provides a second implementation manner of the first aspect, the placing groove is provided with a snap ring, a clamping groove is arranged on a side wall extending along the insertion direction of the calibration block, the calibration block is in interference fit limit connection with the snap ring through the clamping groove, and a part protruding out of an opening end face of the placing groove is arranged in the placing groove.

With reference to the first embodiment of the first aspect, the present utility model provides a third embodiment of the first aspect, wherein the placing groove is internally provided with an internal thread, the side wall extending along the insertion direction of the calibration block is provided with an external thread which is in limit connection with the internal thread in a matching manner, and the calibration block is provided with a part protruding out of the opening end face of the placing groove when being placed in the placing groove.

With reference to the first implementation manner of the first aspect, the present utility model provides a fourth implementation manner of the first aspect, wherein the inner wall of the placement groove is provided with a second annular groove;

the calibration block is provided with an annular flange which is in lap joint limit with the second annular groove;

the positioning device is characterized in that a limiting ring is further arranged at the opening of the positioning groove, and the limiting ring is detachably connected with the machine body and is provided with a supporting part which stretches into the positioning groove to support the calibration block into the positioning groove when being installed.

With reference to the fourth embodiment of the first aspect, the present utility model provides a fifth embodiment of the first aspect, the placement groove is provided with a first annular groove outside the second annular groove, an internal thread is provided on an inner wall of the first annular groove, and the abutting portion of the limiting ring is provided with an external thread matched with the internal thread of the first annular groove.

With reference to the first aspect or the several embodiments of the first aspect, the present utility model provides a sixth implementation manner of the first aspect, the calibration block has a test end surface parallel to the bottom end surface, and a distance between the bottom end surface and the test end surface of the calibration block is the maximum length of the calibration block.

With reference to the sixth implementation manner of the first aspect, the present utility model provides a seventh implementation manner of the first aspect, wherein a raised limiting ring is arranged outside the test end surface, and an inner diameter of the limiting ring is larger than a detection end surface of the ultrasonic probe.

With reference to the first aspect or the several embodiments of the first aspect, the present utility model provides an eighth embodiment of the first aspect, wherein the body has a hook thereon, and the cable of the ultrasonic probe is wound on the hook.

With reference to the eighth embodiment of the first aspect, the present utility model provides a ninth embodiment of the first aspect, wherein the body is detachably connected to the external couplant box through a hook.

It should be noted that the present utility model is mainly optimized and improved for the external structure of the machine body, and the functions of the present utility model are not adjusted, and the present utility model can be directly modified or customized by adopting the existing mature equipment. The circuit board inside the machine body, the detection function and the principle of the circuit board are all in the prior art, and the utility model is not limited.

The beneficial effects of the utility model are as follows:

(1) According to the utility model, the calibration blocks can be accommodated through the accommodating groove structure, and the calibration blocks with different materials and thicknesses can be replaced in a detachable connection mode, so that a user can conveniently calibrate the ultrasonic probe on the machine body directly during detection, and the structure is optimized to avoid the influence of the attaching contact between the bottom of the placed calibration block and the machine body on the calibration precision;

(2) According to the utility model, the structure of the placing groove is optimized, so that an operator can conveniently and quickly replace the calibration block, and meanwhile, the calibration block can be fixed in the placing groove through the limiting ring structure, so that the stability of the calibration block can be further improved;

(3) According to the utility model, the hook is arranged on the machine body, so that the cable and the couplant box can be conveniently and detachably connected with the machine body, and the components can be placed without carrying a larger suitcase during outdoor detection, so that the carrying volume and the weight are reduced.

Drawings

FIG. 1 is a front view of the entire thickness gauge in an embodiment of the utility model;

FIG. 2 is an isometric view of the entire thickness gauge in an example embodiment of the utility model;

FIG. 3 is an enlarged schematic view of part A of FIG. 2 in accordance with the present utility model;

FIG. 4 is a side view of the thickness gauge with the calibration block broken away in accordance with an embodiment of the present utility model;

fig. 5 is an isometric view of a thickness gauge with a calibration block broken away in accordance with an embodiment of the utility model.

In the figure: the ultrasonic sensor comprises a machine body 1, a display screen 2, a key 3, a signal port 4, a placement groove 5, an ultrasonic probe 6, a cable 7, a first annular groove 8, a second annular groove 9, a limiting ring 10, a calibration block 11 and an annular flange 12.

Detailed Description

The utility model is further illustrated by the following description of specific embodiments in conjunction with the accompanying drawings.

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, which are generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, as provided in the accompanying drawings, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present application, it should be noted that, if the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like indicate an azimuth or a positional relationship based on that shown in the drawings, or an azimuth or a positional relationship that a product of the application conventionally puts in use, it is merely for convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like in the description of the present application, if any, are used for distinguishing between the descriptions and not necessarily for indicating or implying a relative importance.

Furthermore, the terms "horizontal," "vertical," and the like in the description of the present application, if any, do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present application, it should also be noted that, unless explicitly stated and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

Example 1:

the embodiment discloses an ultrasonic thickness gauge with a calibration structure, which is used for measuring thickness of a target body by utilizing ultrasonic waves through a single probe.

Specifically, the ultrasonic thickness gauge comprises an integrated machine body 1 and an ultrasonic probe 6, wherein the ultrasonic probe 6 is provided with a detection end face, the detection end face is provided with a transmitting part and a receiving part, and the ultrasonic probe 6 is connected with a signal port 4 arranged on the machine body 1 through a cable 7; the machine body 1 is provided with a placing groove 5 on the front face, a calibration block 11 is arranged in the placing groove 5, the calibration block 11 is detachably connected with the placing groove 5, and when the calibration block 11 is arranged in the placing groove 5, the end face of the bottom of the calibration block 11 is in clearance with the inner bottom surface of the placing groove 5.

Wherein the calibration block 11 is of homogeneous standard construction, generally cylindrical, and is engraved on its surface with a corresponding thickness and material number. The machine body 1 is internally provided with a circuit board, the circuit board is provided with a processing module and a storage module, corresponding data of a plurality of materials can be confirmed through a preset database, corresponding parameters can be determined according to the corresponding database after corresponding numbers are input, and the output power and the corresponding feedback signal processing coefficient are determined through set program control.

In which the placement tank 5 has several, i.e. more than two calibration blocks 11 of different materials or thickness can be placed on the machine body 1. If there are many devices for the inspection at this time and the thickness of the portion having different materials is required to be inspected, it is necessary to prepare calibration blocks 11 of two materials, and to calibrate the same materials before inspection.

As shown in fig. 1, the hand-held machine body 1 is shown to be provided with two placing grooves 5, wherein a cylindrical test block is arranged in the left placing groove 5. And the detection end part of the ultrasonic probe 6 is placed on the surface of the ultrasonic probe for calibration, a calibrated key 3 is arranged at the upper part of the right side of the machine body 1, the ultrasonic probe is directly calibrated through starting-up operation, and the ultrasonic probe is adjusted according to the thickness value displayed on the display screen 2. In the figure, the calibration block 11 is made of stainless steel, has a thickness of 200mm, has a detected value of less than 200mm, is adjusted by using the up-down keys 3 on the machine body 1 to adjust the value to 200mm, and is detected after being calibrated for a plurality of times.

In some embodiments, the holding groove 5 is provided with a snap ring, the side wall of the calibration block 11 extending along the insertion direction is provided with a clamping groove, the calibration block 11 is in interference fit limit connection with the snap ring through the clamping groove, and the calibration block 11 is provided with a part protruding out of the opening end face of the holding groove 5 when being arranged in the holding groove 5.

In some embodiments, the placing groove 5 is internally provided with an internal thread, the side wall of the calibration block 11 extending along the insertion direction is provided with an external thread which is in limit connection with the internal thread in a matching manner, and the calibration block 11 is provided with a part protruding out of the opening end face of the placing groove 5 when being placed in the placing groove 5.

The two ways are that the calibration block 11 is directly detachably connected with the placement groove 5, when the device is arranged, the placement groove 5 or the machine body 1 is required to be made of different materials from all the calibration blocks 11, and the insertion end part of the calibration block 11 is required to be ensured to have a gap with the inner bottom part of the placement groove 5, so that the calibration precision is ensured.

As shown in fig. 2-5, in this embodiment, a connection manner between the placement groove 5 and the calibration block 11 is provided, and a second ring groove 9 is formed on the inner wall of the placement groove 5; the calibration block 11 is provided with an annular flange 12 which is overlapped and limited with the second annular groove 9; the opening of the placing groove 5 is also provided with a limiting ring 10, and the limiting ring 10 is detachably connected with the machine body 1 and is provided with a propping part which stretches into the placing groove 5 to prop the calibration block 11 into the placing groove 5 when being installed.

Meanwhile, the placing groove 5 is provided with a first annular groove 8 outside a second annular groove 9, an inner thread is arranged on the inner wall of the first annular groove 8, and the abutting part of the limiting ring 10 is provided with an outer thread matched with the inner thread of the first annular groove 8. As can be seen in the enlarged view of fig. 3, the inner edge of the placement groove 5 is provided with an internal thread, namely a first annular groove 8, and the second annular groove 9 is provided with an inward sinking groove structure in the first annular groove 8 for receiving an annular flange 12 of the calibration block 11, at this time, only the annular flange 12 of the calibration block 11 contacts with the second annular groove 9 to form a certain limit, and the limit ring 10 is in threaded fit with the placement groove 5 to make the limit ring well fixed in the placement groove 5. This arrangement allows to optimise the dimensions of the calibration block 11 so that its inner wall is as free as possible from contact with the placement groove 5.

Further, the calibration block 11 has a test end surface parallel to the bottom end surface, and the distance between the bottom end surface and the test end surface of the calibration block 11 is the maximum length of the calibration block 11. The outside of the test end face is provided with a raised limiting ring 10, and the inner diameter of the limiting ring 10 is larger than the detection end face of the ultrasonic probe 6.

Further, the machine body 1 is provided with a hook, and the cable 7 of the ultrasonic probe 6 is wound on the hook. And the machine body 1 is detachably connected with an external couplant box through a hook. It should be noted that the conventional ultrasonic thickness gauge needs to carry a suitcase, in which not only the hand-held terminal body 1 is placed, but also the removed ultrasonic probe 6, the cable 7, the calibration block 11, and the box containing the couplant. This kind of carrying mode is comparatively unchangeable, then in order to further reduce and carry the volume, is equipped with the couple at organism 1 back, and not only longer cable 7 can twine its upper portion and form fixedly, optimizes couplant box structure simultaneously, with couple joint, because this kind of box generally adopts the transparent plastic material of deformability, then has certain deformation characteristic, forms better fixed effect through producing certain deformation when the joint, can take off it when using and use can.

The utility model is not limited to the alternative embodiments described above, but any person may derive other various forms of products in the light of the present utility model. The above detailed description should not be construed as limiting the scope of the utility model, which is defined in the claims and the description may be used to interpret the claims.

Claims (10)

1. Ultrasonic thickness gauge with calibration structure utilizes ultrasonic wave to survey thickness to the target body through single probe, its characterized in that: the ultrasonic probe comprises an integrated machine body (1) and an ultrasonic probe (6), wherein the ultrasonic probe (6) is provided with a detection end face, the detection end face is provided with a transmitting part and a receiving part, and the ultrasonic probe (6) is connected with a signal port (4) arranged on the machine body (1) through a cable (7);

the machine body (1) is provided with a placing groove (5) on the front face, a calibration block (11) is arranged in the placing groove (5), the calibration block (11) is detachably connected with the placing groove (5), and a gap is reserved between the bottom end face of the calibration block (11) and the inner bottom face of the placing groove (5) when the calibration block (11) is arranged in the placing groove (5).

2. An ultrasonic thickness gauge with a calibration structure according to claim 1, characterized in that: the placing grooves (5) are arranged in a plurality.

3. An ultrasonic thickness gauge with calibration structure according to claim 2, characterized in that: the clamping ring is arranged in the placing groove (5), a clamping groove is formed in the side wall, extending along the inserting direction, of the calibration block (11), the calibration block is in interference fit limiting connection with the clamping ring through the clamping groove, and the calibration block (11) is arranged in the placing groove (5) and is provided with a part protruding out of the opening end face of the placing groove (5).

4. An ultrasonic thickness gauge with calibration structure according to claim 2, characterized in that: the positioning groove (5) is internally provided with an internal thread, the side wall of the calibration block (11) extending along the insertion direction is provided with an external thread which is in limit connection with the internal thread in a matched mode, and the calibration block (11) is arranged in the positioning groove (5) and is provided with a part protruding out of the opening end face of the positioning groove (5).

5. An ultrasonic thickness gauge with calibration structure according to claim 2, characterized in that: the inner wall of the placing groove (5) is provided with a second annular groove (9);

the calibration block (11) is provided with an annular flange (12) which is in lap joint limit with the second annular groove (9);

still be equipped with spacing ring (10) in standing groove (5) opening part, spacing ring (10) are connected with organism (1) can be dismantled and have when the installation stretch into in standing groove (5) with calibration piece (11) support to the supporting portion in standing groove (5).

6. An ultrasonic thickness gauge with calibration structure according to claim 5, characterized in that:

the placing groove (5) is provided with a first annular groove (8) outside a second annular groove (9), an internal thread is arranged on the inner wall of the first annular groove (8), and the abutting part of the limiting ring (10) is provided with an external thread matched with the internal thread of the first annular groove (8).

7. An ultrasonic thickness gauge with calibration structure according to any one of claims 1-6, characterized in that: the calibration block (11) is provided with a test end face which is parallel to the bottom end face, and the distance between the bottom end face and the test end face of the calibration block (11) is the maximum length of the calibration block (11).

8. An ultrasonic thickness gauge with calibration structure according to claim 7, characterized in that: the test end face is externally provided with a raised limiting ring, and the inner diameter of the limiting ring is larger than the detection end face of the ultrasonic probe (6).

9. An ultrasonic thickness gauge with calibration structure according to any one of claims 1-6, characterized in that: the machine body (1) is provided with a hook, and a cable (7) of the ultrasonic probe (6) is wound on the hook.

10. An ultrasonic thickness gauge with calibration structure according to claim 9, characterized in that: the machine body (1) is detachably connected with an external couplant box through a hook.

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