A drainage pipe leakage detection system

Abstract

The present invention belongs to the technical field of water pipe leakage detection, and specifically relates to a drainage pipe leakage detection system, including: an inflation device, a controller and a frame, a water tank is provided on the frame, a feed port and a discharge port are provided at both ends of the water tank, the diameters of the feed port and the discharge port are matched with the diameter of the drainage pipe, a detection frame is provided on the frame, a vibration sensor is provided on the detection frame, the number of the vibration sensors corresponds to the number of ripples in the drainage pipe in the water tank, and the vibration sensor is electrically connected to the controller. An alarm is provided on the frame, and the alarm is electrically connected to the controller. The controller is used to control the inflation device to inflate the drainage pipe, receive the vibration sensor signal, obtain the number of the vibration sensor with signal change according to the vibration sensor value, and control the conveyor belt to transport the drainage pipe. This scheme adopts the vibration sensor signal change after Hanning window processing to quickly detect the drainage pipe, improve the detection efficiency of a single drainage pipe, and make the leakage point location more accurate.

Description

Technical Field

[0001] The invention belongs to the technical field of water pipe leakage detection, and in particular relates to a drainage pipe leakage detection system. Background Art

[0002] Drain pipes are mainly used for drainage. Drain pipes are divided into plastic drain pipes, concrete pipes (CP) and reinforced concrete pipes (RCP).

[0003] The application number CN201520826007.9 discloses a dry-type detection device for air tightness of an engine water pipe, which relates to an air tightness detection device, including a frame, a plugging mechanism, a clamping mechanism, a pipe body support block, a flange plugging mechanism, an electrical control cabinet, and a dry-type leak detector; the plugging mechanism, the clamping mechanism, and the pipe body support block are fixed on the frame respectively; the plugging mechanism is connected to the pipe mouth of the engine water pipe, the clamping mechanism is connected to the pipe body of the engine water pipe, the input ends of the clamping mechanism, the plugging mechanism, and the flange plugging mechanism are connected to the air source through the air pipe and the air source control valve connected to the air pipe respectively, and the input end of the air source control valve is connected to the output end of the electrical control cabinet; the input end of the dry-type leak detector is connected to the air pipe, and the output end of the dry-type leak detector is connected to the electrical control cabinet. The above scheme can quantify the leakage amount, accurately judge the leaking parts, and avoid personnel misjudgment. It has the characteristics of simple operation, high production efficiency, and guaranteed workpiece quality. It is highly practical and easy to promote and use. The above scheme uses a method of obtaining a differential pressure value to accurately determine the leaking part. The above scheme requires a stabilization time for the air pressure to stabilize before the differential pressure value can be obtained, which increases the detection time of a single workpiece and has a low detection efficiency. Summary of the invention

[0004] The present invention provides a drainage pipe leakage detection system with improved detection efficiency.

[0005] In order to achieve the above-mentioned purpose, the present invention provides a drainage pipe leakage detection system, comprising: an inflation device and a controller; and also comprising: a frame; a water tank is arranged on the frame, and a feed port and a discharge port are arranged at both ends of the water tank; the diameters of the feed port and the discharge port are matched with the diameter of the drainage pipe; a detection frame is arranged on the frame, and the detection frame is located directly above the water tank; a vibration sensor is arranged on the detection frame, and the number of the vibration sensors corresponds to the number of ripples in the drainage pipe in the water tank, and the vibration sensor is electrically connected to the controller; a conveyor belt is arranged at the feed end of the water tank, and the conveyor belt switch is electrically connected to the controller. The frame is provided with a branch pipe, one end of which is connected to the inflation device, and the other end of the branch pipe is provided with a fan blade, and a solenoid valve is provided at the connection point between the branch pipe and the inflation device; the solenoid valve is electrically connected to the controller; a diode and a diode switch are provided on the frame; a pressing block for squeezing the diode switch is provided on the fan blade; sealing valves are provided at both ends of the drain pipe, and the sealing valves are connected to the inflation device; the controller is used to control the inflation device to inflate air into the drain pipe, and receive the vibration sensor signal, obtain the vibration sensor number with signal change according to the vibration sensor value, and control the conveyor belt to transport the drain pipe.

[0006] The principle of this solution is: put the drain pipe into the water tank from the feed port of the water tank, and the controller controls the inflation device to inflate the drain pipe. If there is a leak in the drain pipe in the water tank, bubbles will be generated in the water tank. The bubbles will cause the corresponding vibration sensor signal above the water tank to change. The controller uses a Hanning window to process the vibration sensor signal. Under normal conditions, water fluctuations will cause the vibration sensor to change. The vibration sensor signal processed by the Hanning window will not fluctuate. When bubbles are generated, the vibration sensor signal processed by the Hanning window will change. If the controller detects that the vibration sensor signal has changed, the controller controls the light-emitting diode to light up to remind the workers.

[0007] The beneficial effects of this scheme: This scheme adopts the change of vibration sensor signal after Hanning window processing to quickly detect the drain pipe and improve the detection efficiency of a single drain pipe; this scheme can perform continuity detection on the drain pipe before cutting, and then cut it after the detection is completed, saving the detection time of each drain pipe and improving the detection efficiency of the drain pipe; the specific leakage location of the drain pipe can be seen through the bubbles; by obtaining the number of the vibration sensor with signal change, the leakage location of the drain pipe can be obtained more accurately.

[0008] Furthermore, the inflation device includes an air source and an air inlet pipe, the air source and the air inlet pipe are connected, and a control valve is provided at the connection point between the air source and the air inlet pipe; a filter is provided on the air source, and the filter is an oil mist separator or an air dryer. The filter dries the air and prevents water or oil from mixing into the equipment, causing equipment failure and resulting in inaccurate detection results of the drain pipe.

[0009] Furthermore, it also includes a current transmitter for changing the working current of the vibration sensor, the current transmitter is electrically connected to the vibration sensor, and the current transmitter is electrically connected to the controller; an electromagnet and a magnet are provided between the current transmitter and the vibration sensor; the electromagnet and the magnet are both provided with a conductive sheet for connecting the current transmitter and the vibration sensor; the conductive sheet is in contact when the electromagnet and the magnet attract each other; the electromagnet control switch is electrically connected to the controller. When the controller detects that the current delivered by the current transmission is not within the set working current range, the controller controls the electromagnet to cut off the power, separate the conductive sheet, stop the vibration sensor from working, and protect the vibration sensor.

[0010] Furthermore, a water level gauge is provided in the water tank, and the water level gauge is electrically connected to the controller. When the water level reaches a set value, the controller controls the inflation device to inflate air into the drain pipe, and when the water level is less than the set value, the controller controls the inflation device to stop infusing air into the drain pipe.

[0011] Furthermore, a hot air blower is provided at the discharge end of the water tank, and the hot air blower is used to dry the drain pipe, so as to facilitate the subsequent process operation.

[0012] Furthermore, a timer is provided on the frame, and the timer is electrically connected to the controller. When the controller does not detect a change in the vibration sensor signal, the controller controls the conveyor belt to convey the drain pipe according to the time of the timer and the set detection time. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a front cross-sectional view of an embodiment of the present invention.

[0014] Figure 2 It is a schematic top view of a detection frame and a vibration sensor according to an embodiment of the present invention.

[0015] Figure 3 Schematic diagram of the structure of the electromagnet and the magnet according to an embodiment of the present invention. DETAILED DESCRIPTION

[0016] The following is a further detailed description through specific implementation methods:

[0017] The reference numerals in the drawings of the specification include: a frame 1, a conveyor belt 2, a drain pipe 3, a water tank 4, a sealing valve 5, a hot air blower 6, a detection frame 7, a vibration sensor 8, an electromagnet 9, a magnet 10, a conductive sheet 11, and a water level meter 12.

[0018] Example:

[0019] A drainage pipe 3 leakage detection system, as shown in the attached Figure 1 , Attachment Figure 2 and attached Figure 3As shown, it includes: an inflation device, a controller, and a frame 1. A water tank 4 is arranged on the frame 1. A feed port and a discharge port are arranged at both ends of the water tank 4. The diameters of the feed port and the discharge port are matched with the diameter of the drain pipe 3. The feed port and the discharge port are used to place the drain pipe 3. The drain pipe 3 is in close contact with the feed port and the discharge port, which can reduce the water in the water tank 4 from flowing out from the feed port and the discharge port.

[0020] The frame 1 is provided with a detection frame 7, which is fixed to the frame 1 by bolts. The detection frame 7 is inverted U-shaped, so that the detection frame 7 is more stable as a whole. The detection frame 7 is located directly above the water tank 4. The detection frame 7 is provided with a vibration sensor 8, and the number of vibration sensors 8 corresponds to the number of ripples of the drain pipe 3 located in the water tank 4. The vibration sensor 8 is electrically connected to the controller. The drain pipe 3 is put into the water tank 4 from the feed port of the water tank 4, and the controller controls the inflation device to inflate the drain pipe 3. If there is a leak in the drain pipe 3 located in the water tank 4, bubbles will be generated in the water tank 4. The bubbles will cause the corresponding vibration sensor 8 signal above the water tank 4 to change. The controller uses the Hanning window to process the vibration sensor 8 signal. Under normal conditions, water fluctuations will cause the vibration sensor 8 to change. The vibration sensor 8 signal processed by the Hanning window will not fluctuate. When bubbles are generated, the vibration sensor 8 signal processed by the Hanning window will change. If the controller detects that the vibration sensor 8 signal has changed, the drain pipe 3 is detected.

[0021] By using the signal change of the vibration sensor 8 after Hanning window processing, the drain pipe 3 can be quickly detected, and the detection of a single drain pipe 3 can be improved; this solution can perform continuity detection on the drain pipe 3 before cutting, and then cut it after the detection is completed, saving the detection time of each drain pipe 3 and improving the detection efficiency of the drain pipe 3; the specific leakage position of the drain pipe 3 can be seen through the bubbles; by obtaining the number of the vibration sensor 8 with signal change, the leakage position of the drain pipe 3 can be obtained more accurately.

[0022] The feed end of the water tank 4 is provided with a conveyor belt 2, and the switch of the conveyor belt 2 is electrically connected to the controller. A branch pipe is provided on the frame 1, one end of the branch pipe is connected to the inflation device, and a fan blade is provided at the other end of the branch pipe. The fan blade is fixed to the frame 1 by bolts. A solenoid valve is provided at the connection point between the branch pipe and the inflation device, and the solenoid valve is electrically connected to the controller. A light-emitting diode and a diode switch are provided on the frame 1. A pressing block for squeezing the diode switch is provided on the fan blade. When a leak occurs in the drain pipe 3, the controller controls the solenoid valve to open, so that the airflow in the inflation device enters the branch pipe, thereby causing the fan blade to rotate, and the pressing block on the fan blade intermittently touches the diode switch, so that the light-emitting diode intermittently lights up to remind the staff.

[0023] Sealing valves 5 are provided at both ends of the drain pipe 3, and the sealing valves 5 are connected to the inflation device. The controller is used to control the inflation device to inflate air into the drain pipe 3, and receive the signal of the vibration sensor 8, obtain the number of the vibration sensor 8 with signal change according to the value of the vibration sensor 8, and control the conveyor belt 2 to transport the drain pipe 3.

[0024] It also includes a current transmitter for changing the working current of the vibration sensor 8. The current transmitter is located on the frame 1 and is fixed to the frame 1 by bolts. The current transmitter is used to adjust the circuit current so that the vibration sensor 8 works stably. The current transmitter is electrically connected to the vibration sensor 8, and the current transmitter is electrically connected to the controller; an electromagnet 9 and a magnet 10 are arranged between the current transmitter and the vibration sensor 8; the electromagnet 9 and the magnet 10 are both provided with a conductive sheet 11 for connecting the current transmitter and the vibration sensor 8; the conductive sheet 11 is in contact when the electromagnet 9 and the magnet 10 attract each other; the electromagnet 9 control switch is electrically connected to the controller. When the controller detects that the current delivered by the current transmission is not within the set working current range, the controller controls the electromagnet 9 to cut off the power, separate the conductive sheet 11, stop the vibration sensor 8 from working, and protect the vibration sensor 8.

[0025] A water level gauge 12 is provided in the water tank 4. The water level gauge 12 is placed in the water tank 4 and is electrically connected to the controller. The water level gauge 12 is used to monitor the water level in the water tank 4. When the water level reaches a set value, the controller controls the inflation device to inflate the drain pipe 3. When the water level is less than the set value, the controller controls the inflation device to stop infusing the drain pipe 3.

[0026] A hot air blower 6 is provided at the discharge end of the water tank 4, and the hot air blower 6 is used to dry the drain pipe 3. Drying the drain pipe 3 is convenient for subsequent process operations. The hot air blower 6 is fixed to the frame 1 by bolts, and the hot air blower 6 is located on the square of the discharge port of the water tank 4, which is convenient for quickly drying the upper surface of the drain pipe 3 and convenient for marking the drain pipe 3 later.

[0027] A timer is provided on the frame 1, and the timer is fixedly mounted on the frame 1 by bolts. The timer is electrically connected to the controller. When the controller does not detect a change in the signal of the vibration sensor 8, the controller controls the conveyor belt 2 to convey the drain pipe 3 according to the timer time and the set detection time.

[0028] The operation method of this scheme is as follows: put the drain pipe 3 into the water tank 4 from the feed port of the water tank 4, and then inject water into the water tank 4 so that the water covers the surface of the drain pipe 3. When the water level reaches the set value, the controller controls the inflation device to inflate air into the drain pipe 3. When the water level is less than the set value, the controller controls the inflation device to stop inflating air into the drain pipe 3. The controller controls the inflation device to inflate air into the drain pipe 3. If there is a leak in the drain pipe 3 in the water tank 4, bubbles will be generated in the water tank 4. The bubbles will cause the corresponding vibration sensor 8 signal above the water tank 4 to change. The controller uses a Hanning window to process the vibration sensor 8 signal. Under normal conditions, water fluctuations will cause the vibration sensor 8 to change. The vibration sensor 8 signal processed with the Hanning window will not fluctuate. When bubbles are generated, the vibration sensor 8 signal processed with the Hanning window will change. If the controller detects that the vibration sensor 8 signal has changed, the controller controls to turn on the alarm to remind the workers. When the controller detects that the current delivered by the current transmission is not within the set working current range, the controller controls the electromagnet 9 to cut off the power, separates the conductive sheet 11, stops the vibration sensor 8 from working, and protects the vibration sensor 8. After the inspection of the drain pipe 3 in the water tank 4 is completed, when the drain pipe 3 is moved out, the hot air blower 6 dries the drain pipe 3 to facilitate subsequent process operations.

[0029] This solution uses the signal change of the vibration sensor 8 after Hanning window processing to quickly detect the drain pipe 3 and improve the detection of a single drain pipe 3; this solution can perform continuity detection on the drain pipe 3 before cutting, and then cut it after the detection is completed, saving the detection time of each drain pipe 3 and improving the detection efficiency of the drain pipe 3; the specific leakage position of the drain pipe 3 can be seen through the bubbles; by obtaining the number of the vibration sensor 8 with signal change, the leakage position of the drain pipe 3 obtained can be more accurate.

[0030] The above is only an embodiment of the present invention, and the common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the present invention, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A drainage pipe leakage detection system, comprising: Inflating device and controller; characterized in that, it also includes: a frame; a water tank is arranged on the frame, and a feed port and a discharge port are arranged at both ends of the water tank; the diameters of the feed port and the discharge port are matched with the diameter of the drain pipe; a detection frame is arranged on the frame, and the detection frame is located directly above the water tank; a vibration sensor is arranged on the detection frame, and the number of vibration sensors corresponds to the number of ripples in the drain pipe in the water tank, and the vibration sensor is electrically connected to the controller; the controller processes the vibration sensor signal through a Hanning window, and a conveyor belt is arranged at the feed end of the water tank, and the conveyor belt switch is electrically connected to the controller; The frame is provided with a branch pipe, one end of which is connected to the inflation device, and the other end of the branch pipe is provided with a fan blade, and a solenoid valve is provided at the connection point between the branch pipe and the inflation device; the solenoid valve is electrically connected to the controller; a light-emitting diode and a diode switch are provided on the frame; a pressing block for squeezing the diode switch is provided on the fan blade; sealing valves are provided at both ends of the drain pipe, and the sealing valves are connected to the inflation device; the controller is used to control the inflation device to inflate air into the drain pipe, and receive the vibration sensor signal, obtain the vibration sensor number with signal change according to the vibration sensor value, and control the conveyor belt to transport the drain pipe.

2. A drainage pipe leakage detection system according to claim 1, characterized in that: The inflation device includes an air source and an air intake pipe, the air source is connected to the air intake pipe, and a control valve is provided at the connection between the air source and the air intake pipe; a filter is provided on the air source, and the filter is an oil mist separator or an air dryer.

3. A drainage pipe leakage detection system according to claim 1, characterized in that: It also includes a current transmitter for changing the working current of the vibration sensor, the current transmitter is electrically connected to the vibration sensor, and the current transmitter is electrically connected to the controller; an electromagnet and a magnet are arranged between the current transmitter and the vibration sensor; the electromagnet and the magnet are both provided with a conductive sheet for connecting the current transmitter and the vibration sensor; the conductive sheet contacts when the electromagnet and the magnet attract each other; the electromagnet control switch is electrically connected to the controller.

4. A drainage pipe leakage detection system according to claim 1, characterized in that: A water level gauge is arranged in the water tank, and the water level gauge is electrically connected to the controller.

5. A drainage pipe leakage detection system according to claim 1, characterized in that: A hot air blower is provided at the discharge end of the water tank, and the hot air blower is used to dry the drainage pipe.

6. A drainage pipe leakage detection system according to claim 1, characterized in that: The rack is provided with a timer, and the timer is electrically connected to the controller.

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