Ultrasonic device for detecting impervious performance of concrete

Abstract

The utility model discloses an ultrasonic device for detecting the impermeability of concrete, and belongs to the technical field of concrete impermeability detection. An ultrasonic device for detecting the impervious performance of concrete comprises an impervious detection table and a test piece groove formed in the impervious detection table, a pair of detection plates are arranged on the impervious detection table, connecting pieces are arranged on the detection plates respectively, and driving pieces connected with the connecting pieces are arranged on the impervious detection table; an air cushion is arranged on the inner side wall of the test piece groove, and an air pump for supplying and deflating air to the air cushion is arranged on the impermeability detection table; according to the device, by utilizing the propagation characteristic of ultrasonic waves in concrete, the impervious performance of the concrete is objectively and accurately measured, a test piece does not need to be damaged, and the detection accuracy and efficiency are greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of concrete impermeability detection, especially relates to an ultrasonic device for detecting the impermeability of concrete. BACKGROUND

[0002] Impermeability is an important indicator affecting the quality of concrete, and when the impermeability is poorer, harmful liquids and ions in the external environment are more likely to enter the interior of the concrete, erode the internal structure of the concrete, and affect the service performance of the concrete structure. In the "Standard for Testing Methods for Long-Term Performance and Durability of Ordinary Concrete" (GB / T 50082-2009), it is suggested to use the step-by-step pressure method and the water penetration height method to detect the impermeability of concrete. The step-by-step pressure method takes a long time, and the water penetration height method needs to measure the water penetration height after splitting the test piece, but the damaged section of the test piece is uncontrollable, and the measurement by personnel has a certain subjectivity, so the accuracy of the results is low. SUMMARY

[0003] The utility model aims at the problems existing in the prior art, and provides an ultrasonic device for detecting the impermeability of concrete.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an ultrasonic device for detecting the impermeability of concrete, comprising an impermeability detection table, a test piece groove provided on the impermeability detection table, a pair of detection plates provided on the impermeability detection table, connecting pieces respectively provided on the pair of detection plates, a driving piece provided on the impermeability detection table and connected with the connecting pieces, an ultrasonic probe provided on the pair of detection plates, and a rubber pad provided on the detection plate.

[0005] By adopting the above technical scheme, the device integrates the test piece groove, the detection plate, the ultrasonic probe and other key components through integrated design, forms an efficient and convenient concrete impermeability detection system, has compact structure and is easy to operate, can greatly improve the detection efficiency and accuracy, and provides strong support for the quality control of concrete.

[0006] Optionally, the detection plate is an arc-shaped plate, the two detection plates are spliced into a circular table, the butt joint edge of one of the detection plates is provided with an insertion strip, the other detection plate is provided with a butt joint groove near one end of the insertion strip, and the insertion strip is inserted into the butt joint groove.

[0007] By adopting the technical scheme, the arc-shaped plate design can better adapt to the curved surface of the concrete test piece, reduce the reflection and scattering of ultrasonic waves in the propagation process, improve the accuracy of detection, and the design of the insertion strip and the butt joint groove realizes quick and accurate butt joint between the two detection plates, ensuring the stability and sealing performance of the detection plate after splicing, preventing the test water source from leaking at the splicing position and affecting the detection result.

[0008] Optionally, the connecting piece comprises a fixed column connected with the detection plate, and the outer side of the fixed column is provided with a connecting column.

[0009] By adopting the technical scheme, the "T"-shaped connecting piece design enhances the strength and stability of the connecting piece, ensuring the stability and accuracy of the detection plate during movement and adjustment.

[0010] Optionally, the end of the fixed column close to the detection plate is provided with a rubber block, and the fixed column is connected with the detection plate through a fixed bolt.

[0011] By adopting the technical scheme, the design of the fixed bolt enables the detection plate to be conveniently disassembled and replaced, improving the flexibility and maintainability of the device.

[0012] Optionally, the driving piece comprises a cavity opened on the anti-permeation detection table, the inner side wall of the cavity is provided with a threaded rod, the threaded directions of the threaded rods on the two sides are opposite, the anti-permeation detection table is provided with a motor connected with one end of the threaded rod, the outer side of the threaded rod is provided with a pair of threaded seats, and the connecting column is connected with the threaded seats.

[0013] By adopting the technical scheme, the motor drives the threaded rod to rotate, and through the connection of the threaded seat and the connecting column, the movement and adjustment of the detection plate on the anti-permeation detection table are realized, which not only improves the detection efficiency, but also makes the detection process more flexible and controllable.

[0014] Optionally, the side wall of the cavity is provided with a slide for the movement of the connecting column.

[0015] By adopting the technical scheme, the setting of the slide ensures the stability and accuracy of the connecting column during movement, prevents the deviation and shaking of the connecting column during movement, and the design of the slide also makes the movement of the connecting column more smooth and stable, improving the stability and reliability of the detection process.

[0016] Optionally, the ultrasonic probes are arranged in multiple layers along the vertical direction of the detection plate, the spacing between the ultrasonic probes in each layer is 5mm, and the number of layers arranged is three.

[0017] By adopting the technical scheme, the ultrasonic probe arranged in multiple layers can more comprehensively cover the surface of the concrete test piece, and improve the accuracy and reliability of detection.

[0018] Compared with the prior art, the utility model has the advantages that:

[0019] 1. The device detects by ultrasonic technology, realizes objective and accurate determination of the impermeability of concrete, the traditional step-by-step pressurization method takes a long time, and the water penetration height method needs to split the test piece, which not only damages the test piece, but also leads to low result accuracy due to uncontrollable measurement section and personnel subjectivity, compared with the prior art, the device utilizes the propagation characteristics of ultrasonic waves in concrete, receives and analyzes ultrasonic signal indexes such as reflected signal strength, signal time delay, signal frequency and signal waveform, can accurately reflect the impermeability of concrete, and does not need to damage the test piece, greatly improves the accuracy and efficiency of detection; 2. The device is carefully designed in the arrangement of the ultrasonic probe, the ultrasonic probe is arranged in multiple layers along the vertical direction of the detection plate, the spacing between each layer is 5mm, and the number of each layer is three, the arrangement can more comprehensively detect the impermeability of the concrete test piece, reduce the possibility of missed detection and false detection, and improve the accuracy and reliability of detection; 3. The device also adopts the air cushion and air pump to supply and discharge air to the inner side wall of the test piece groove, realizes stable sealing of the test piece, improves the detection accuracy, and avoids the damage and pollution of the test piece caused by the traditional sealing method. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a three-dimensional structure schematic view of the impermeability detection device of the utility model;

[0021] Figure 2 It is a three-dimensional structure schematic view of the detection plate of the utility model;

[0022] Figure 3 It is a three-dimensional structure schematic view of the connecting piece of the utility model;

[0023] Figure 4 It is a connecting structure schematic view of the driving part and the impermeability detection table of the utility model;

[0024] Figure 5 It is a sectional connecting structure schematic view of the detection plate and the ultrasonic probe of the utility model.

[0025] In the drawing: 1, impermeability detection table; 2, test piece groove; 3, detection plate; 301, insertion strip; 302, butt joint groove; 4, connecting piece; 41, fixed column; 411, rubber block; 412, fixed bolt; 42, connecting column; 5, driving part; 51, cavity; 511, slide; 52, threaded rod; 53, motor; 54, threaded seat; 6, ultrasonic probe; 7, rubber pad; 8, air cushion; 9, air pump. DETAILED DESCRIPTION

[0026] The technical solutions of the utility model will be described clearly and completely in combination with the drawings in the utility model. Obviously, the described embodiments are only some of the embodiments of the utility model, but not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0027] In the description of the utility model, it should be explained that the terms "intermediate", "upper", "lower", "left", "right", "inner", "outer" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0028] As shown in Figure 1 The specific scheme of the embodiment is as follows: an ultrasonic device for detecting the impermeability of concrete, comprising an impermeability detection table 1, the impermeability detection table 1 is "L" shaped, the impermeability detection table 1 is used as the basic support platform of the whole detection device, and is used for mounting and fixing all other components, so as to ensure the stability and accuracy of the detection process, a control device and a display screen are arranged on the impermeability detection table 1, and a test piece groove 2 is arranged on the impermeability detection table 1, the test piece groove 2 is used for placing the concrete test piece to be detected, so that the test piece can keep a fixed position in the detection process, and the detection of the ultrasonic probe 6 and the collection of data are facilitated, and a water supply hole is arranged at the center position of the test piece groove 2, so as to provide a test water source for the concrete test piece;

[0029] The anti-permeability detection platform 1 is provided with a pair of detection plates 3, the detection plates 3 are arc-shaped plates, and the two detection plates 3 are spliced into a circular table shape. The butt joint edge of one of the detection plates 3 is provided with an insertion strip 301, and the other detection plate 3 is provided with a butt joint groove 302 near one end of the insertion strip 301. The insertion strip 301 can be inserted into the butt joint groove 302. The insertion strip 301 and the butt joint groove 302 are designed to realize quick and accurate butt joint between the two detection plates 3, ensure the stability and sealing performance of the detection plate 3 after splicing, ensure the tightness of the detection plate 3 after splicing, prevent the test water source from leaking at the splicing position, and affect the detection result. A plurality of connecting holes are formed in the detection plate 3 for mounting the ultrasonic probe 6. The detection plate 3 serves as a mounting carrier for the ultrasonic probe 6 and cooperates with the test piece groove 2 to form a clamping action on the concrete test piece, so that the ultrasonic wave can be accurately transmitted to the inside of the test piece. The arc-shaped plate design can better adapt to the curved surface of the concrete test piece, reduce the reflection and scattering of the ultrasonic wave during transmission, and improve the detection accuracy. At the same time, the two detection plates 3 are spliced into a circular table shape, which can further increase the contact area with the test piece and improve the detection stability.

[0030] A pair of the detection plates 3 are respectively provided with connecting pieces 4, which can connect the detection plates 3 with the driving pieces 5 to realize the movement and adjustment of the detection plates 3 on the anti-permeability detection platform 1. The connecting piece 4 comprises a fixed column 41 connected with the detection plate 3, and a connecting column 42 is arranged on the outer side of the fixed column 41. The fixed column 41 and the connecting column 42 are connected in a "T" shape. A rubber block 411 is mounted on one end of the fixed column 41 close to the detection plate 3. The fixed column 41 is connected with the detection plate 3 through a fixed bolt 412. The "T" shape design of the fixed column 41 and the connecting column 42 enhances the strength and stability of the connecting piece 4. At the same time, the cooperation of the rubber block 411 and the fixed bolt 412 makes the detection plate 3 convenient to disassemble and assemble;

[0031] The anti-permeability detection platform 1 is provided with a driving member 5 connected with the connecting member 4, which provides power to realize the movement and adjustment of the detection plate 3 on the anti-permeability detection platform 1, and facilitates the fixation and detection of the concrete test piece. The driving member 5 comprises a cavity 51 formed on the anti-permeability detection platform 1, and a slide 511 is formed on the side wall of the cavity 51 for the movement of the connecting column 42. A threaded rod 52 is arranged on the inner side wall of the cavity 51, and the threaded directions of the threaded rod 52 on both sides are opposite. A motor 53 is arranged on the anti-permeability detection platform 1 and connected with one end of the threaded rod 52. A pair of threaded seats 54 are arranged on the outer side of the threaded rod 52, and the connecting column 42 is connected with the threaded seats 54. The threaded rod 52 can drive the threaded seats 54 to move synchronously to the middle or to both sides in the cavity 51 under the driving of the motor 53, thereby realizing the opening and movement of the detection plate 3. The arrangement of the slide 511 ensures the stability and accuracy of the connecting column 42 during movement. This design not only improves the detection efficiency, but also makes the detection process more flexible and controllable.

[0032] A pair of detection plates 3 are provided with ultrasonic probes 6, and the outer side of the ultrasonic probe 6 is provided with threads. The ultrasonic probe 6 is connected with the connecting hole through threads. The ultrasonic probe 6 is an ultrasonic water immersion aggregation probe, and the model is W15M6DJ20. The ultrasonic water immersion aggregation probe can generate ultrasonic waves with longer wavelength, which makes it have stronger penetrating power and can penetrate into the interior of the concrete test piece for detection. The ultrasonic probe 6 can emit ultrasonic waves and receive the reflected signals, which are used to detect the anti-permeability of the concrete test piece. The ultrasonic probe 6 is arranged in multiple layers along the vertical direction of the detection plate 3. The spacing between each layer of the ultrasonic probe 6 is 5mm, and the number of layers arranged is three. This arrangement can more comprehensively cover the surface of the concrete test piece, improve the accuracy and reliability of the detection, and at the same time, the sensitivity and resolution of the ultrasonic probe 6 are also high, which can accurately reflect the internal structure and anti-permeability of the concrete test piece.

[0033] The detection plate 3 is provided with a rubber pad 7, which increases the contact area and sealing performance between the detection plate 3 and the concrete test piece, prevents the leakage of the detection water source at the contact position, and has good elasticity and sealing performance, which can ensure the close contact between the detection plate 3 and the concrete test piece. At the same time, the rubber pad 7 can also play a buffering role to reduce the damage to the concrete test piece during the detection process.

[0034] The inner side wall of the test piece groove 2 is provided with an air cushion 8, which can supply and release air to the inner side wall of the test piece groove 2, realize stable sealing of the concrete test piece, and the air pump 9 provided on the impermeability detection table 1 can supply and release air to the air cushion 8. The use of the air cushion 8 and the air pump 9 can ensure the sealing performance of the test piece groove 2 during the detection process, prevent external factors from affecting the detection result, and at the same time, the air cushion 8 can also play a buffering role, reduce the impact and damage to the concrete test piece during the detection process, and in addition, the adjustment function of the air pump 9 can also realize accurate control of the air pressure in the air cushion 8, further improve the accuracy and stability of the detection.

[0035] The detection steps of the above embodiment are as follows:

[0036] Select the concrete test piece to be detected, ensure that its size, shape and surface quality meet the detection requirements, and the concrete test piece adopts a standard piece, the standard piece is a circular truncated cone body with an inner diameter of 175mm at the upper opening, an inner diameter of 185mm at the lower opening and a height of 150mm;

[0037] Seal the side surface of the concrete test piece with sealing materials such as paraffin to prevent water from penetrating from the side surface and affecting the accuracy of the detection result;

[0038] Place the sealed concrete test piece in the test piece groove 2 of the impermeability detection table 1, and ensure that the test piece is stable and centered;

[0039] Start the air pump 9 to inflate the air cushion 8 on the inner side wall of the test piece groove 2, and ensure the sealing performance of the test piece groove 2;

[0040] Through the driving of the motor 53, the threaded rod 52 drives the threaded seat 54 to move in the cavity 51, and synchronously drives a pair of the detection plates 3 to close;

[0041] Start the ultrasonic wave generating device to emit ultrasonic wave signals, receive the reflected ultrasonic wave signals through the receiving device, record the signal strength, signal time delay, signal frequency and signal waveform and other indexes as blank group data;

[0042] Start the impermeability instrument, inject water into the test piece groove 2 through the water supply hole, apply a certain water pressure, and under the action of the water pressure, the concrete test piece will gradually be divided into a saturated zone, a wet zone and a dry zone;

[0043] During the operation of the impermeability instrument, ultrasonic wave signals are continuously emitted and received, and the signal characteristics after passing through the saturated zone and the wet zone are compared with the signal characteristics of the dry zone, and the change of the signal is analyzed;

[0044] Compare the received ultrasonic wave signals with the blank group data, analyze the changes of the signal strength, time delay, frequency and waveform and other indexes;

[0045] According to the change of the signal received by each layer of ultrasonic probe, the water penetration height of the concrete sample is analyzed, and the impermeability of the concrete is comprehensively evaluated.

[0046] If the signal received by the ultrasonic probe of a layer changes less, the height from the ultrasonic probe of the layer to the bottom of the sample is the water penetration height. The lower the measured water penetration height is, the better the impermeability of the sample is; otherwise, the worse the impermeability is.

[0047] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. An ultrasonic device for detecting impermeability of concrete, comprising an impermeability detection table, and a test piece groove provided on the impermeability detection table, characterized in that, The anti-permeation detection platform is provided with a pair of detection plates, a connecting piece is arranged on each of the detection plates, a driving piece is arranged on the anti-permeation detection platform and connected with the connecting piece, an ultrasonic probe is arranged on each of the detection plates, and a rubber pad is arranged on the detection plate; the inner side wall of the test piece groove is provided with an air cushion, and an air pump is arranged on the anti-permeation detection platform to supply and exhaust air to the air cushion.

2. The ultrasonic device for detecting the impermeability of concrete according to claim 1, characterized in that: The detection plate is an arc-shaped plate, and the two detection plates are spliced into a circular table shape; the butt joint edge of one of the detection plates is provided with an insertion strip, and the end of the other detection plate close to the insertion strip is provided with a butt joint groove; and the insertion strip is inserted into the butt joint groove.

3. The ultrasonic device for detecting the impermeability of concrete according to claim 1, characterized in that: The connecting piece comprises a fixed column connected with the detection plate, and the outer side of the fixed column is provided with a connecting column; and the fixed column and the connecting column are connected in a "T" shape.

4. The ultrasonic device for detecting the impermeability of concrete according to claim 3, characterized in that: A rubber block is mounted on the end of the fixed column close to the detection plate, and the fixed column is connected with the detection plate through a fixed bolt.

5. The ultrasonic device for detecting the impermeability of concrete according to claim 3, characterized in that: The driving piece comprises a cavity formed in the anti-permeation detection platform, the inner side wall of the cavity is provided with a threaded rod, the threaded directions of the threaded rods on both sides are opposite, the anti-permeation detection platform is provided with a motor connected with one end of the threaded rod, the outer side of the threaded rod is provided with a pair of threaded seats, and the connecting column is connected with the threaded seats.

6. The ultrasonic device for testing the impermeability of concrete according to claim 5, characterized in that: A slide is formed in the side wall of the cavity for the movement of the connecting column.

7. The ultrasonic device for testing the impermeability of concrete according to claim 1, characterized in that: The ultrasonic probes are arranged in multiple layers in the vertical direction of the detection plate, the spacing between the ultrasonic probes in each layer is 5 mm, and the number of the ultrasonic probes arranged in each layer is three.

Images