Ultrasonic flaw detection device for concrete dam

Abstract

The utility model discloses an ultrasonic flaw detection device for a concrete dam. The ultrasonic flaw detection device comprises a concrete ultrasonic detector and a plurality of concrete strain gauges pre-buried in a dam body, the device comprises a dam body and a concrete ultrasonic detector, and further comprises a sliding rail and a detection box, the sliding rail is detachably installed on the dam body, the detection box is slidably connected with the sliding rail, the concrete ultrasonic detector is arranged in the detection box, and the detection end of the concrete ultrasonic detector faces the dam body; the system further comprises a data processing terminal, the signal output end of the concrete ultrasonic detector is connected with the first signal input end of the data processing terminal, and the signal output end of the concrete strain gauge is connected with the second signal input end of the data processing terminal. According to the utility model, through real-time monitoring of internal stress and structure abnormal change of key vulnerable positions of the concrete dam, key flaw detection of the concrete dam structure can be realized, the detection is accurate, and the detection efficiency is high.

Description

Technical Field

[0001] The utility model relates to the field of safety detection equipment for concrete dams, in particular to an ultrasonic flaw detector for concrete dams. Background Art

[0002] Under the long-term impact of water flow and geological changes, the inside of a concrete dam is prone to structural damage. If it is not repaired and maintained in time, there are major safety hazards. At present, after a concrete dam is built, it is mostly maintained by regular flaw detection. This method has the problem of being untimely, and real-time flaw detection cannot be carried out on some key vulnerable positions of the concrete dam, and there are still safety hazards. Content of the Utility Model

[0003] In view of the above problems, the utility model provides an ultrasonic flaw detector for concrete dams. Through the real-time monitoring of the internal stress and abnormal structural changes of the key vulnerable positions of the concrete dam, key flaw detection of the structure of the concrete dam can be realized, with accurate detection and high detection efficiency.

[0004] The technical solution of the utility model is as follows:

[0005] An ultrasonic flaw detector for concrete dams includes a concrete ultrasonic detector and a plurality of concrete strain gauges embedded in the dam body. It also includes a slide rail and a detection box. The slide rail is detachably installed on the dam body. The detection box is slidably connected to the slide rail. The concrete ultrasonic detector is arranged in the detection box, and the detection end of the concrete ultrasonic detector faces the dam body. It further includes a data processing terminal. The signal output end of the concrete ultrasonic detector is connected to the first signal input end of the data processing terminal, and the signal output end of the concrete strain gauge is connected to the second signal input end of the data processing terminal.

[0006] The working principle of the above technical solution is as follows:

[0007] The utility model is mainly used for real-time flaw detection and monitoring of the key vulnerable positions of a concrete dam. A plurality of concrete strain gauges are embedded and arranged at different positions in the dam body of the utility model to detect the stress change of the concrete inside the dam in real time. At the same time, a concrete ultrasonic detector is arranged on one side of the dam to detect the internal structural change of the dam in real time. Moreover, the concrete ultrasonic detector is movably arranged. When a certain concrete strain gauge detects abnormal stress inside the dam, the data processing terminal will receive the signal and give an alarm. At this time, the concrete ultrasonic detector is moved to the corresponding position, and more accurate detection can be carried out to detect the structural change of the dam at this position in real time, providing more reliable information for subsequent maintenance work.

[0008] In a further technical solution, chutes are respectively formed in the top and bottom of the slide rail along its length direction, and pulleys which respectively cooperate with the two chutes on the slide rail are arranged on the detection box. By adopting this connection method, it can not only ensure the smooth sliding of the detection box on the slide rail, but also realize the stable support of the detection box. Baffles are arranged at both ends of the slide rail to prevent the detection box from derailing; a detection port is arranged at the position corresponding to the detection end of the concrete ultrasonic detector on the slide rail, so that the detection end of the concrete ultrasonic detector will not be blocked, ensuring the smooth progress of detection.

[0009] In a further technical solution, heat dissipation holes are arranged on the box wall of the detection box, which is convenient for dissipating heat from the equipment and devices inside the detection box.

[0010] In a further technical solution, a temperature sensor is arranged inside the detection box to detect the temperature inside the detection box in real time. A heat dissipation fan is arranged at the inner top of the detection box. When the temperature inside the detection box is too high, the heat dissipation fan can be started through the controller to accelerate the heat dissipation of the inside of the detection box, ensuring the stable operation of the equipment and devices inside the detection box. The specific control method is as follows: the temperature sensor transmits the temperature value signal detected in real time to the controller, and the controller judges whether the temperature value exceeds a predetermined high temperature value. If it exceeds, a start signal is sent to the heat dissipation fan, and the heat dissipation fan works; if it does not exceed, no start signal is sent.

[0011] In a further technical solution, the box wall of the detection box is made of copper-aluminum alloy material with a large heat conduction coefficient and fast heat dissipation, which can improve the heat dissipation efficiency of the inside of the detection box. In addition, in order to further ensure that the inside of the detection box can be in a lower ambient temperature, a semiconductor refrigeration sheet can be arranged on the box wall of the detection box. The cold end of the semiconductor refrigeration sheet is inside the detection box, and the hot end of the semiconductor refrigeration sheet is outside the detection box.

[0012] In a further technical solution, a waterproof and breathable film is wrapped on the outer wall of the concrete ultrasonic detector, which can prevent external water vapor from corroding and damaging the concrete ultrasonic detector and improve its service life.

[0013] The beneficial effects of the present utility model are as follows:

[0014] 1. By the combined use of the concrete strain gauge and the concrete ultrasonic detector in the present utility model, the dam structure can be detected more accurately in position, and the change of the structure at this place of the dam can be detected in real time, providing more reliable information help for subsequent maintenance work;

[0015] 2. Heat dissipation holes are arranged on the box wall of the detection box, which is convenient for dissipating heat from the equipment and devices inside the detection box;

[0016] 3. It can not only ensure the smooth sliding of the detection box on the slide rail, but also realize the stable support of the detection box;

[0017] 4. The settings of the temperature sensor and the cooling fan can effectively monitor the temperature inside the detection box, accelerate the heat dissipation inside the detection box, and ensure the stable operation of the equipment and components inside the detection box.

[0018] 5. The box wall of the detection box is made of copper-aluminum alloy material, which has a large thermal conductivity and fast heat dissipation, and can improve the heat dissipation efficiency inside the detection box.

[0019] 6. Wrapping a waterproof and breathable membrane on the outer wall of the concrete ultrasonic detector can prevent external water vapor from corroding and damaging the concrete ultrasonic detector and improve its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a side view of the dam body according to an embodiment of the present invention;

[0021] Figure 2 is a top view of the dam body according to an embodiment of the present invention;

[0022] Figure 3 is a schematic connection structure diagram of the detection box and the slide rail according to an embodiment of the present invention.

[0023] DESCRIPTION OF THE REFERENCE NUMERALS:

[0024] 10. Dam body; 20. Slide rail; 21. Detection port; 30. Detection box; 31. Concrete ultrasonic detector; 32. Cooling fan; 33. Temperature sensor; 34. Heat dissipation hole; 40. Concrete strain gauge; 50. Pulley. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The embodiments of the present invention will be further described below with reference to the drawings.

[0026] Embodiment:

[0027] As Figure 1 - Figure 2 shown, a concrete dam ultrasonic flaw detector includes a concrete ultrasonic detector 31 and a plurality of concrete strain gauges 40 embedded in the dam body 10; it also includes a slide rail 20 and a detection box 30. The slide rail 20 is detachably installed on the side of the dam body 10, the detection box 30 is slidably connected to the slide rail 20, the concrete ultrasonic detector 31 is arranged in the detection box 30, and the detection end of the concrete ultrasonic detector 31 faces the dam body 10; it further includes a data processing terminal. The signal output end of the concrete ultrasonic detector 31 is connected to the first signal input end of the data processing terminal, and the signal output end of the concrete strain gauge 40 is connected to the second signal input end of the data processing terminal. The data processing terminal uses a computer terminal with a controller that can receive multiple signals, and each signal is displayed on the computer display screen.

[0028] The working principle of the above technical solution is as follows:

[0029] The utility model pre-buries a plurality of concrete strain gauges 40 at different positions in the dam body 10 for real-time detection of stress changes in the concrete inside the dam. At the same time, a concrete ultrasonic detector 31 is arranged on one side of the dam for real-time detection of changes in the internal structure of the dam. Moreover, the concrete ultrasonic detector 31 is movably arranged. When the concrete strain gauge 40 at a certain position detects that the stress inside the dam is abnormal, the data processing terminal will issue an alarm upon receiving the signal. At this time, the concrete ultrasonic detector 31 is moved to the corresponding position to perform more accurate position detection, detect changes in the structure of the dam at this position in real time, and provide more reliable information assistance for subsequent maintenance work.

[0030] The utility model can carry out real-time flaw detection monitoring on key vulnerable positions of concrete dams. Compared with the regular flaw detection method in the prior art, the utility model is timely and can eliminate safety hazards to a certain extent.

[0031] In another embodiment, if Figure 3 As shown, the top and bottom of the slide rail 20 are respectively provided with slide grooves along the length direction thereof, and the detection box 30 is provided with pulleys 50 respectively matched with the two slide grooves on the slide rail 20. This connection method can not only ensure that the detection box 30 slides smoothly on the slide rail 20, but also realize stable support for the detection box 30. Baffles are provided at both ends of the slide rail 20 to prevent the detection box 30 from derailing; a detection port 21 is provided on the slide rail 20 at a position corresponding to the detection end of the concrete ultrasonic detector 31, so that the detection end of the concrete ultrasonic detector 31 will not be blocked, thereby ensuring smooth detection.

[0032] In another embodiment, if Figure 3 As shown, heat dissipation holes 34 are provided on the wall of the detection box 30 to facilitate heat dissipation of the equipment components inside the detection box 30.

[0033] In another embodiment, if Figure 3 As shown, a temperature sensor 33 is provided inside the detection box 30, which can detect the temperature inside the detection box 30 in real time. A cooling fan 32 is provided on the inner top of the detection box 30. When the temperature inside the detection box 30 is too high, the cooling fan 32 can be started by the controller to speed up the heat dissipation inside the detection box 30, so as to ensure that the equipment and devices in the detection box 30 can operate stably. The specific control method is as follows: the temperature sensor 33 transmits the real-time detected temperature value signal to the controller, and the controller determines whether the temperature value exceeds the predetermined high temperature value. If so, a start signal is sent to the cooling fan 32, and the cooling fan 32 works. If not, no start signal is sent.

[0034] In another embodiment, the box wall of the detection box 30 is made of copper-aluminum alloy material, which has a large thermal conductivity and fast heat dissipation, and can improve the heat dissipation efficiency inside the detection box 30. In addition, in order to further ensure that the inside of the detection box 30 can be at a relatively low ambient temperature, a thermoelectric cooler can be provided on the box wall of the detection box 30. The cold end of the thermoelectric cooler is inside the detection box 30, and the hot end of the thermoelectric cooler is outside the detection box 30.

[0035] In another embodiment, the outer wall of the concrete ultrasonic detector 31 is wrapped with a waterproof and breathable membrane, which can prevent external water vapor from corroding and damaging the concrete ultrasonic detector 31 and improve its service life.

[0036] The above embodiments only represent the specific implementation manners of the present invention, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. An ultrasonic flaw detection device for concrete dams, characterized in that: It includes a concrete ultrasonic detector and a plurality of concrete strain gauges embedded in the dam body; it also includes a slide rail and a detection box, the slide rail is detachably installed on the dam body, the detection box is slidably connected to the slide rail, the concrete ultrasonic detector is arranged in the detection box, and the detection end of the concrete ultrasonic detector faces the dam body; it also includes a data processing terminal, the signal output end of the concrete ultrasonic detector is connected to the first signal input end of the data processing terminal, and the signal output end of the concrete strain gauge is connected to the second signal input end of the data processing terminal.

2. The ultrasonic flaw detection device for concrete dams according to claim 1 is characterized in that: The top and bottom of the slide rail are respectively provided with slide grooves along the length direction thereof, and the detection box is provided with pulleys respectively matched with the two slide grooves on the slide rail; and a detection port is provided on the slide rail at a position corresponding to the detection end of the concrete ultrasonic detector.

3. The ultrasonic flaw detection device for concrete dams according to claim 1 is characterized in that: The box wall of the detection box is provided with heat dissipation holes.

4. The ultrasonic flaw detection device for concrete dams according to claim 3 is characterized in that: A temperature sensor is arranged inside the detection box, and a heat dissipation fan is arranged on the inner top of the detection box.

5. The ultrasonic flaw detection device for concrete dams according to claim 1 is characterized in that: The box wall of the detection box is made of copper-aluminum alloy material.

6. The ultrasonic flaw detection device for concrete dams according to claim 1 is characterized in that: The outer wall of the concrete ultrasonic detector is wrapped with a waterproof and breathable membrane.

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