Ultrasonic detection device suitable for ultra-high performance concrete test block

Abstract

The ultrasonic detection device comprises an ultrasonic probe, a coupler and a detected surface cleaning assembly, the coupler comprises a fixing device and a coupling head, one end of the fixing device is sleeved on the ultrasonic probe, the other end of the fixing device is connected with one end of the coupling head, and the other end of the fixing device is connected with the ultrasonic probe. A detected surface cleaning assembly is arranged at the other end of the coupling head and comprises a hydraulic turbine and a brush, a water flow channel is formed in the coupling head, the hydraulic turbine is located in the water flow channel, water flowing through the water flow channel drives the hydraulic turbine to rotate, and the hydraulic turbine drives the brush which is connected with the hydraulic turbine and used for cleaning the surface of a test block to rotate. And water in the water flow channel can flow into a coupling head inner cavity between the ultrasonic probe and the surface of the test block in contact with the coupling head. According to the utility model, the hydraulic turbine is hydraulically driven to drive the brush to rotate, the mounting surface of the ultrasonic probe can be cleaned, and the inner cavity of the coupling head can be filled with water during detection; the device is compact in structure; the detection precision is high.

Description

Technical Field

[0001] This utility model belongs to the field of ultrasonic testing, specifically an ultrasonic testing device suitable for ultra-high performance concrete test blocks. Background Technology

[0002] The material composition of ultra-high performance concrete contains steel fibers, so steel fibers inevitably protrude from the outer surface of its structural test blocks. When using ultrasonic probes for testing, the presence of protruding steel fibers necessitates the reapplication of petroleum jelly to assist in the coupling between the probe and the test block during each test, making the test operation cumbersome and the test specimens relatively long. Utility Model Content

[0003] To address the aforementioned problems in existing technologies, the purpose of this invention is to provide an ultrasonic testing device suitable for ultra-high performance concrete specimens. This device uses a hydraulically driven turbine to rotate a brush, thereby cleaning the ultrasonic probe mounting surface without affecting the testing process. The inner cavity of the coupling head can be filled with water during testing, thus achieving coupling between the ultrasonic probe and the specimen. The device has a compact structure, greatly simplifying the testing procedure for ultra-high performance concrete specimens, reducing testing difficulty, and improving testing accuracy.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] An ultrasonic testing device for ultra-high performance concrete test blocks includes an ultrasonic probe, a coupler, and a surface cleaning assembly. The coupler includes a retainer and a coupling head. One end of the retainer is sleeved on the ultrasonic probe, and the other end is connected to one end of the coupling head. The other end of the coupling head is equipped with the surface cleaning assembly, which includes a hydraulic turbine and a brush. The coupling head has a water flow channel, and the hydraulic turbine is located inside the water flow channel. Water flowing through the water flow channel drives the hydraulic turbine to rotate, which in turn drives the brush connected to it to rotate for cleaning the surface of the test block. Water from the water flow channel can flow into the inner cavity of the coupling head between the ultrasonic probe and the surface of the test block in contact with the coupling head.

[0006] As a further improvement to the above technical solution:

[0007] The surface cleaning assembly also includes a support rod, a hydraulic turbine, and a brush that can move along the axial direction of the coupling head. The support rod connects to and drives the hydraulic turbine and brush to move.

[0008] The coupling head includes a tubular inner wall and a tubular outer wall, which are coaxially connected and spaced apart. There are multiple partitions between the inner and outer walls, with the two ends of each partition connected to the inner and outer walls respectively. The water flow channel is located between the inner and outer walls and is formed by the inner wall, the outer wall, and the partitions. The brush is located between the inner and outer walls.

[0009] The coupling head is equipped with a water inlet pipe and a water inlet. The water inlet pipe is located on the outer side wall, and the water inlet is located on the inner side wall near the fixing device. One end of the water flow channel is connected to the water inlet pipe, and the other end is connected to the water inlet. The water inlet is connected to the inner cavity of the coupling head.

[0010] The coupling head is also equipped with two water outlets, located on the inner and outer walls respectively, at the ends away from the fixture.

[0011] The hydraulic turbine includes blades and a blade frame. The blade frame has a ring structure, and there are multiple blades arranged at intervals on the blade frame. The blade frame is connected to a brush frame through connectors, and the brushes are mounted on the brush frame.

[0012] The outer circumferential surface of the brush holder is a convex surface in the middle. The limiting collar is a ring structure located between the inner and outer side walls. The outer surface of the limiting collar is connected to the support rod, and the inner surface faces the outer circumferential surface of the brush holder. The inner surface of the limiting collar is a concave surface so as to cooperate with the convex circumferential surface of the brush holder. When the limiting collar moves along the axial direction of the coupling head, the limiting collar can contact and push the brush holder to move synchronously.

[0013] The water flow channel is also fixed with a stop rod. The hydraulic turbine can be moved along the axial direction of the coupling head until the stop rod is engaged in the hydraulic turbine to prevent the hydraulic turbine from rotating, or until the hydraulic turbine is disengaged from the stop rod.

[0014] Both the inner wall end away from the retainer and the outer wall end away from the retainer are equipped with sealing rubber rings.

[0015] The fixture includes a sleeve and a clamp. Both the sleeve and the coupling head are cylindrical structures and are arranged coaxially. One end of the sleeve is connected to one end of the coupling head. The sleeve is fitted over the ultrasonic probe. The clamp used to tighten the sleeve is detachably fitted over the sleeve.

[0016] The beneficial effects of this invention are as follows: A hydraulic turbine drives a brush to rotate, thus cleaning the ultrasonic probe mounting surface. A support rod moves the brush back and forth, and a stop rod prevents the turbine from rotating, ensuring the brush does not affect testing when cleaning is not required. The inner cavity of the coupling head is filled with water during testing, achieving coupling between the ultrasonic probe and the test block. Furthermore, the water in the coupling head cavity flows through the turbine, maximizing water utilization and eliminating the need for a separate driving force for the turbine. The water flow channel, turbine, and brush are all located between the inner and outer walls, not affecting subsequent ultrasonic testing. The device has a compact structure. This greatly simplifies the testing procedure for ultra-high performance concrete test blocks, reduces testing difficulty, and improves testing accuracy. Attached Figure Description

[0017] Figure 1 This is a structural schematic diagram of one embodiment of the present invention.

[0018] Figure 2 This is a schematic diagram of the coupling head according to an embodiment of the present invention.

[0019] Figure 3 This is a schematic diagram of the internal structure of one embodiment of the present invention.

[0020] Figure 4 yes Figure 3 Enlarged diagram of point B. Detailed Implementation

[0021] The following is a detailed description of the specific embodiments of the present invention in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention and are not intended to limit the present invention.

[0022] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0023] An ultrasonic testing device suitable for ultra-high performance concrete test blocks, such as Figures 1-4 As shown, it includes an ultrasonic probe 1, a coupler 2, and a surface cleaning assembly. The coupler 2 is mounted on the ultrasonic probe 1, and the surface cleaning assembly is mounted on the coupler 2.

[0024] Coupler 2 consists of a retainer 21 and a coupling head 22. One end of the retainer 21 is connected to the ultrasonic probe 1, and the other end is connected to one end of the coupling head 22.

[0025] The retainer 21 includes a sleeve 211 and a clamp 212. Both the sleeve 211 and the coupling head 22 are cylindrical structures, coaxially arranged, with one end of the sleeve 211 connected to one end of the coupling head 22. The ultrasonic probe 1 is located inside the sleeve 211; in other words, the sleeve 211 is fitted over the ultrasonic probe 1. The sleeve 211 has at least one elongated groove 213, the length of which is parallel to the axial direction of the sleeve 211. The elongated groove 213 is either a groove on the side wall of the sleeve 211 or a through hole penetrating the side wall of the sleeve 211. One end of the elongated groove 213 is flush with the end of the sleeve 211 furthest from the coupling head 22. Due to the elongated groove 213, the cross-section of the end of the sleeve 211 furthest from the coupling head 22 is adjustable within a certain range; that is, this end of the sleeve 211 has a certain elasticity and can expand, facilitating installation on the ultrasonic probe 1. In other words, the sleeve 211 is composed of multiple arc-shaped plates with gaps between adjacent arc-shaped plates, arranged in a circular array to form a sleeve structure with a long groove 213. A clamp 212 is detachably fitted onto the outside of the sleeve 211, used to tighten the sleeve 211 and ensure its stable fit on the ultrasonic probe 1. To improve the sealing between the sleeve 211 and the ultrasonic probe 1, a rubber sealing sleeve 214 is provided between them.

[0026] In this embodiment, the sleeve 211 is made of PVC.

[0027] like Figure 2 and 3 As shown, the coupling head 22 is a double-walled tubular structure, including an inner wall 221, an outer wall 222, and multiple partitions 223. There is a gap between the inner wall 221 and the outer wall 222. The partitions 223 are located between the inner wall 221 and the outer wall 222, and their two ends are connected to the inner wall 221 and the outer wall 222 respectively, forming a cylindrical structure. In other words, the coupling head 22 includes an inner tube and an outer tube. The inner diameter of the outer tube is larger than the outer diameter of the inner tube. The outer tube and the inner tube are coaxially sleeved together, and connected by the partitions 223 located between them.

[0028] The coupling head 22 is equipped with an inlet pipe 23, a water flow channel 24, an inlet 29, and an outlet 27. The inlet pipe 23 is located on the outer wall 222, and the inlet 29 is located on the inner wall 221 near the fixture 21. The water flow channel 24 is formed by partitions 223, meaning that there are partitions 223 spaced apart between the inner wall 221 and the outer wall 222. The channel between the partitions 223 is the water flow channel 24. One end of the water flow channel 24 is connected to the inlet pipe 23, and the other end is connected to the inlet 29. In this way, water entering from the inlet pipe 23 enters the water flow channel 24, and then enters the inner cavity A of the coupling head 22 from the inlet 29, so that the inner cavity A can be filled with water, realizing the coupling between the ultrasonic probe 1 and the test block. There are two outlets 27, located on the inner wall 221 and the outer wall 222 respectively, at the ends away from the fixture 21.

[0029] A sealing rubber ring 28 is provided at the end of the coupling head 22 away from the fixing device 21, that is, both the end of the inner wall 221 and the end of the outer wall 222 are provided with sealing rubber rings 28.

[0030] The surface cleaning assembly is mounted on the coupling head 22 at the end furthest from the retainer 21. The surface cleaning assembly includes a water turbine 25, a brush 26, and a support rod 265. The brush 26 is located between the inner wall 221 and the outer wall 222 at the end furthest from the retainer 21. The water turbine 25 is located within the water flow channel 24 and is driven to rotate by water flowing through the channel 24. The water turbine 25 is connected to and drives the brush 26 to rotate, thus cleaning the surface of the test block. One end of the support rod 265 is connected to and drives the brush 26 to move axially upwards in the coupling head 22, allowing the brush 26 to extend beyond the coupling head 22 to contact the test surface and to retract into the space between the inner wall 221 and the outer wall 222.

[0031] The hydraulic turbine 25 is an annular turbine, comprising blades 251 and a blade frame 252. The blade frame 252 is a ring-shaped structure with a right-angled cross-section, fitted onto the inner wall 221. The blade frame 252 is located between the inner and outer walls 221 and within the water flow channel 24. Multiple blades 251 are provided, spaced apart on the blade frame 252. Thus, when water flows and impacts the blades 251, it causes the blades 251 and the blade frame 252 to rotate as a whole around the central axis of the coupling head 22.

[0032] To facilitate the arrangement of the hydraulic turbine 25, the baffle 223 includes a first baffle 2231, a second baffle 2232, a third baffle 2233, and a fourth baffle 2234. Both the first baffle 2231 and the second baffle 2232 are annular rings fitted around the inner wall 221. The planes of both the first baffle 2231 and the second baffle 2232 are perpendicular to the central axis of the coupling head 22, and the first baffle 2231 and the second baffle 2232 are arranged parallel to each other. The channel between the first baffle 2231 and the second baffle 2232 is a first water flow channel, in which the hydraulic turbine 25 is placed. The first baffle 2231 is closer to the fixture 21 than the second baffle 2232. The third partition 2233 and the fourth partition 2234 are elongated plate-like structures. The length direction of both the third partition 2233 and the fourth partition 2234 is parallel to the central axis of the coupling head 22. The third partition 2233 and the fourth partition 2234 are arranged parallel and spaced apart. The channel between the third partition 2233 and the fourth partition 2234 is the second water flow channel. This second water flow channel is located between the fixture 21 and the first partition 2231. One end of the second water flow channel is closed by the partition 223 at the end of the coupling head 22, and the other end connects to the through hole on the first partition 2231. Thus, the first water flow channel and the second water flow channel are connected to form a water flow channel 24. The water inlet pipe 23 connects to the first water flow channel, and the water inlet 29 connects to the second water flow channel.

[0033] The hydraulic turbine 25 is connected to the brush 26 via a connector 262 and a brush holder 261. Specifically, the brush 26 is located on the side of the second partition 2232 away from the first partition 2231. One end of the connector 262 is connected to the wheel frame 252, and the other end is connected to the brush holder 261. The brush 26 is mounted on the brush holder 261. Clearly, both the brush 26 and the brush holder 261 are annular. The connector 262 must pass through the second partition 2232, and it will be driven to rotate. To ensure the sealing of the first water flow channel, the connector 262 can be designed as a tubular structure. The second partition 2232 has an annular through hole, through which the tubular connector 262 passes. Thus, when the connector 262 rotates, it will completely seal the through hole on the second partition 2232, so even if there is some leakage, it will not be a problem. Alternatively, the connector 262 can be designed as a rod-shaped structure. The connector 262 cannot completely block the through hole on the second partition 2232. In this case, part of the water in the first water flow channel flows into the second water flow channel, and the other part flows into the side of the second partition 2232 away from the first partition 2231 through the through hole on the second partition 2232. At this time, the outlet 27 on the inner wall 221 and the outlet 27 on the outer wall 222 should be connected by a water pipe so that the water outlet 27 is not affected.

[0034] The support rod 265 controls the brush 26 via the limiting collar 263. Specifically, the outer circumferential surface of the brush holder 261 is a convex surface in the center. The limiting collar 263 is an annular structure located between the inner wall 221 and the outer wall 222. The outer surface of the limiting collar 263 connects to the support rod 265, and the inner surface faces the outer circumferential surface of the brush holder 261. The inner surface of the limiting collar 263 is a concave surface that can mate with the convex circumferential surface of the brush holder 261. Thus, when the limiting collar 263 moves axially along the coupling head 22, due to the concave-convex fit between the limiting collar 263 and the brush holder 261, the limiting collar 263 can contact and push the brush holder 261 to move synchronously. To avoid interfering with the rotation of the brush holder 261, a small gap, known as a groove 264, is provided between the limiting collar 263 and the brush holder 261. The presence of the groove 264 does not affect the movement of the brush holder 261 driven by the limiting collar 263. One end of the support rod 265 is connected to the brush holder 261, and the other end extends out through the right-angle slot 225 on the outer wall 222, facilitating manual operation of the support rod 265.

[0035] Furthermore, a stop rod 224 is provided between the first partition 2231 and the second partition 2232. One end of the stop rod 224 is mounted on the first partition 2231, and the other end extends outward. The hydraulic turbine 25 can move along the axial direction of the coupling head 22 until the stop rod 224 engages between two adjacent blades 251 to prevent the hydraulic turbine 25 from rotating, or until the hydraulic turbine 25 disengages from the stop rod 224.

[0036] The right-angle slot 224 is a U-shaped or C-shaped through hole. In other words, the right-angle slot 224 includes a straight hole and a transverse hole perpendicularly connected to both ends of the straight hole. The length of the straight hole is parallel to the axial direction of the coupling head 22, and the length of the transverse hole is along the circumference of the outer wall 222. The width of the straight hole is greater than the outer diameter of the support rod 265, and the width of the transverse hole is approximately equal to the outer diameter of the support rod 265, allowing the support rod 265 to be inserted into the transverse hole. When the support rod 265 moves along the length of the straight hole, it drives the brush holder 261 to move along the axial direction of the coupling head 22. When the support rod 265 is moved into the transverse hole, it can be inserted into the transverse hole.

[0037] Based on the above structure, the working process of this utility model is as follows:

[0038] The first step is to contact the end of the coupling head 22 with the sealing rubber ring 28 to the surface of the test block.

[0039] The second step involves manually operating the support rod 265 to engage it in the horizontal hole near the sealing rubber ring 28 of the right-angle slot 224. As the support rod 265 moves, it drives the limiting collar 263 to move toward the sealing rubber ring 28. The limiting collar 263 drives the brush holder 261, connector 262, water turbine 25, and brush 26 to move synchronously. After the movement, the water turbine 25 disengages from the stop rod 224, and the brush 26 extends out of the end of the coupling head 22 where the sealing rubber ring 28 is located.

[0040] The third step is to inject water into the inlet pipe 23. The water enters the water flow channel 24 and impacts the water turbine 25, causing the water turbine 25 to rotate. The water turbine 25 drives the brush 26 to rotate through the connector 262. The brush 26 cleans the surface of the test piece that it is in contact with.

[0041] Fourth step: After cleaning is completed, manually operate the support rod 265 to move it, so that the support rod 265 is engaged in the horizontal hole of the right-angle slot 224 at the end away from the sealing rubber ring 28. During the movement of the support rod 265, the limiting collar 263 moves towards the end away from the sealing rubber ring 28. The limiting collar 263 drives the brush holder 261, the connector 262, the hydraulic turbine 25, and the brush 26 to move synchronously. After the movement, the stop rod 224 is engaged in the hydraulic turbine 25 to prevent the hydraulic turbine 25 from rotating, ensuring that the hydraulic turbine 25 does not affect the subsequent testing effect. The brush 26 is then returned to the space between the inner wall 221 and the outer wall 222.

[0042] Fifth, place the end of the coupling head 22 with the sealing rubber ring 28 into the surface of the cleaned test block, and continue to inject water into the water inlet pipe 23. The water enters the inner cavity of the coupling head 22 through the water flow channel 24 and the water inlet 29. When the inner cavity A of the coupling head 22 between the ultrasonic probe 1 and the surface of the cleaned test block is full of water, the water will flow out from the water outlet 27, realizing the coupling between the ultrasonic probe 1 and the test block, and subsequent ultrasonic testing can be performed. It should be noted that in this step and during subsequent ultrasonic testing, the position of the testing device should be adjusted so that the opening of the water outlet 27 faces upward.

[0043] Finally, it is necessary to state that the above embodiments are only used to further illustrate the technical solution of this utility model in detail, and should not be construed as limiting the scope of protection of this utility model. Any non-essential improvements and adjustments made by those skilled in the art based on the above content of this utility model shall fall within the scope of protection of this utility model.

Claims

1. An ultrasonic testing device suitable for ultra-high performance concrete test blocks, characterized in that, The device includes an ultrasonic probe (1), a coupler (2), and a surface cleaning assembly. The coupler (2) includes a retainer (21) and a coupling head (22). One end of the retainer (21) is sleeved on the ultrasonic probe (1), and the other end is connected to one end of the coupling head (22). The other end of the coupling head (22) is provided with a surface cleaning assembly, which includes a water turbine (25) and a brush (26). The coupling head (22) is provided with a water flow channel (24). The water turbine (25) is located in the water flow channel (24). The water flowing through the water flow channel (24) drives the water turbine (25) to rotate. The water turbine (25) drives the brush (26) connected to it to rotate. The water in the water flow channel (24) can flow into the inner cavity (A) of the coupling head (22) between the ultrasonic probe (1) and the surface of the test block that is in contact with the coupling head (22).

2. The detection device according to claim 1, characterized in that: The surface cleaning assembly also includes a support rod (265), a water turbine (25) and a brush (26) that can move along the axial direction of the coupling head (22). The support rod (265) connects to and drives the water turbine (25) and the brush (26) to move.

3. The detection device according to claim 1 or 2, characterized in that: The coupling head (22) includes a tubular inner wall (221) and a tubular outer wall (222). The inner wall (221) and the outer wall (222) are coaxially connected. There is a gap between the inner wall (221) and the outer wall (222). There are multiple partitions (223) between the inner wall (221) and the outer wall (222). The two ends of the partitions (223) are connected to the inner wall (221) and the outer wall (222) respectively. The water flow channel (24) is located between the inner wall (221) and the outer wall (222). The water flow channel (24) is surrounded by the inner wall (221), the outer wall (222) and the partitions (223). The brush (26) is located between the inner wall (221) and the outer wall (222).

4. The detection device according to claim 3, characterized in that: The coupling head (22) is provided with a water inlet pipe (23) and a water inlet (29). The water inlet pipe (23) is located on the outer side wall (222), and the water inlet (29) is located on the inner side wall (221) near the end of the fixture (21). One end of the water flow channel (24) is connected to the water inlet pipe (23), and the other end is connected to the water inlet (29). The water inlet (29) is connected to the inner cavity (A) of the coupling head (22).

5. The detection device according to claim 4, characterized in that: The coupling head (22) is also provided with a water outlet (27). There are two water outlets (27), which are located on the inner side wall (221) and the outer side wall (222) respectively, at the end away from the fixing device (21).

6. The detection device according to claim 3, characterized in that: The hydraulic turbine (25) includes blades (251) and blade frame (252). The blade frame (252) has a ring structure. Multiple blades (251) are provided and are arranged at intervals on the blade frame (252). The blade frame (252) is connected to the brush frame (261) through a connector (262). The brush (26) is installed on the brush frame (261).

7. The detection device according to claim 6, characterized in that: The outer circumferential surface of the brush holder (261) is a convex surface in the middle. The limiting collar (263) is a ring structure. The limiting collar (263) is located between the inner sidewall (221) and the outer sidewall (222). The outer surface of the limiting collar (263) is connected to the support rod (265), and the inner surface faces the outer circumferential surface of the brush holder (261). The inner surface of the limiting collar (263) is a concave surface so as to cooperate with the convex circumferential surface of the brush holder (261). When the limiting collar (263) moves along the axial direction of the coupling head (22), the limiting collar (263) can contact and push the brush holder (261) to move synchronously.

8. The detection device according to claim 1 or 6, characterized in that: The water flow channel (24) is also fixed with a stop rod (224). The water turbine (25) can move along the axial direction of the coupling head (22) until the stop rod (224) is engaged in the water turbine (25) to prevent the water turbine (25) from rotating, or move until the water turbine (25) is disengaged from the stop rod (224).

9. The detection device according to claim 1, characterized in that: A sealing rubber ring (28) is provided at the end of the inner wall (221) away from the retainer (21) and at the end of the outer wall (222) away from the retainer (21).

10. The detection device according to claim 1, characterized in that: The fixture (21) includes a sleeve (211) and a clamp (212). Both the sleeve (211) and the coupling head (22) are cylindrical structures. The sleeve (211) and the coupling head (22) are arranged coaxially. One end of the sleeve (211) is connected to one end of the coupling head (22). The sleeve (211) is sleeved on the outside of the ultrasonic probe (1). The clamp (212) used to tighten the sleeve (211) is detachably sleeved on the outside of the sleeve (211).

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