A pipeline inspection device integration apparatus

Abstract

The application relates to a pipeline detection equipment integration device. A detection module comprises a metal shielding box and receivers of GPR and electromagnetic induction detectors. The metal shielding box is in a waist shape and comprises a bottom plate, a top plate, side plates and multiple shielding plates. The side plates comprise inner and outer side plates which are sleeved with each other. An annular channel in a strip shape is formed between the inner and outer side plates. Detection positions are arranged at the two ends of the length direction of the annular channel. Circular holes corresponding to the detection positions are arranged on the top plate and the bottom plate. Shielding doors are arranged on the two sides of the line connecting the two detection positions on the annular channel. The shielding doors are kept in a closed position through torsional springs. The multiple shielding plates are arranged on the line connecting the two detection positions in a spaced mode. The GPR and the electromagnetic induction detector each comprise a walking mechanism. The receivers of the GPR and the electromagnetic induction detector can move in the annular channel through the walking mechanism to interchange positions. The probes of the receivers of the GPR and the electromagnetic induction detector are coaxially arranged with the circular holes of the corresponding detection positions, interference can be prevented, and the interchange positioning accuracy can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to a pipeline detection equipment integration device. BACKGROUND

[0002] In urban construction and maintenance, pipeline detection refers to the process of locating and identifying the orientation, depth and attribute information of underground pipelines (such as water supply, gas, power, communication, etc.) using professional technical means. The equipment used mainly includes electromagnetic induction instruments for metal pipeline detection and GPR (ground penetrating radar) for non-metal pipeline detection. The electromagnetic induction instrument uses electromagnetic induction principle, the transmitter applies an alternating current signal of a specific frequency to the target pipeline, and an alternating electromagnetic field is generated around the metal pipeline. The receiver captures the magnetic field strength, direction and frequency by sensing the electromagnetic field changes, thereby determining the pipeline position. GPR uses high-frequency electromagnetic wave (radar wave) technology, the radar antenna transmits electromagnetic waves underground, and when encountering pipelines of different media, part of the electromagnetic waves will be reflected back. By analyzing the propagation time and waveform characteristics of the reflected waves, the position and depth of the pipeline can be determined.

[0003] In actual use, since the type and location of the pipeline are unknown, for pipeline detection in complex scenarios, the cooperation of two instruments is required. For example, after marking the metal pipeline with an electromagnetic induction instrument, GPR needs to start scanning the marked position and surrounding non-metal pipelines from the same point. Traditional pipeline detection equipment relies mainly on manual operation or hand-held or hand-pushed equipment. The main problems are as follows:

[0004] 1. Low precision of manual operation. After positioning the metal pipeline with the electromagnetic induction instrument, it is difficult for the operator to accurately place the GPR at the same position, resulting in increased measurement error.

[0005] 2. Magnetic field coupling interference and electric field coupling interference exist between the electromagnetic induction instrument and the GPR. When the two are placed together, the low-frequency magnetic field (usually <100 kHz) of the electromagnetic induction instrument will interfere with the high-frequency electromagnetic wave (100 MHz-2.5 GHz) of the GPR through eddy current effect, and the high-frequency signal of the GPR may interfere with the sensitivity of the electromagnetic induction coil through capacitive coupling. SUMMARY

[0006] The purpose of the present application is to provide a pipeline detection equipment integration device to solve the technical problems of mutual interference and poor interchange positioning accuracy when the electromagnetic induction instrument and the GPR are integrated.

[0007] The technical solution of the present application is as follows: a pipeline detection equipment integration device comprises:

[0008] a handcart;

[0009] The detection module is installed on the trolley and comprises a metal shielding box and receivers of GPR and electromagnetic induction detectors, the metal shielding box is in a waist shape and comprises a bottom plate, a top plate, side plates and multiple shielding plates, the side plates comprise inner and outer side plates which are sleeved with each other, an annular channel in a strip shape is formed between the inner and outer side plates, two ends of the annular channel in the length direction are respectively provided with detection positions for the receivers of the GPR and the electromagnetic induction detector to work, the top plate and the bottom plate are respectively provided with circular holes corresponding to the detection positions, shielding doors are respectively arranged on two sides of a line connecting the two detection positions on the annular channel, the shielding doors are kept in a closed position by torsional springs, the multiple shielding plates are arranged at intervals on the line connecting the two detection positions, the receivers of the GPR and the electromagnetic induction detector each comprise a walking mechanism, the receivers of the GPR and the electromagnetic induction detector can move in the annular channel by the walking mechanisms to interchange positions, and the probes of the receivers of the GPR and the electromagnetic induction detector are coaxially arranged with the circular holes of the corresponding detection positions.

[0010] On the basis of the above scheme, the bottom plate, the top plate, the side plates, the shielding plates and the shielding doors of the metal shielding box each comprise two layers, which are a permalloy layer and a copper mesh layer respectively. Since the GPR and the electromagnetic induction detector process high-frequency electromagnetic waves and low-frequency magnetic fields respectively, the permalloy layer can effectively suppress the low-frequency magnetic field, and the copper mesh layer can effectively shield the high-frequency electromagnetic waves.

[0011] On the basis of the above scheme, the bottom plate is provided with a guide rail, and wheels of the walking mechanisms move along the guide rail. Through the arrangement of the guide rail, the GPR and the electromagnetic induction detector move in the annular channel with higher precision, especially when moving to the corresponding detection position, the coaxiality of the probes and the corresponding circular holes in the bottom plate is ensured.

[0012] On the basis of the above scheme, the shielding doors can only be opened in one direction clockwise, and the walking mechanisms of the receivers of the GPR and the electromagnetic induction detector move clockwise along the guide rail.

[0013] On the basis of the above scheme, two infrared sensors are respectively arranged at the two circular holes in the top plate to detect whether the receivers of the GPR and the electromagnetic induction detector reach the corresponding detection position, so as to improve the positioning precision of the GPR and the electromagnetic induction detector on the detection position.

[0014] On the basis of the above scheme, the trolley comprises a bottom plate, the bottom plate is provided with a mounting groove with the same size as the metal shielding box to mount the metal shielding box, and the groove bottom of the mounting groove is respectively provided with coaxial avoiding holes corresponding to the two circular holes in the bottom plate.

[0015] On the basis of the above scheme, further improved as follows, the trolley comprises a hand-pushing frame, and a controller with a touch screen is arranged on the hand-pushing frame; the controller, the GPR and the receiver of the electromagnetic induction detector all comprise wireless communication modules for communication with each other.

[0016] On the basis of the above scheme, further improved as follows, the top plate of the metal shielding box is connected with a rotating shaft, a motor is fixed to the outer circumferential surface of the side plate, and a control module of the motor is connected with the controller in a control mode; under the control of the controller, the motor can drive the top plate to rotate to realize the opening and closing of the metal shielding box; through this design, the top plate can be frequently opened and closed under control, so that the interference between the GPR and the electromagnetic induction detector during detection is intermittent, thereby reducing the time length of the interference and not affecting the communication between the GPR, the electromagnetic induction detector and the controller.

[0017] The pipeline detection equipment integrated device has the following advantages: the detection template is placed on the trolley during use, and the trolley is pushed to move for detection; during the detection process, the receivers of the GPR and the electromagnetic induction detector are respectively arranged at two detection positions for detection; since the bottom plate of the detection position is provided with a corresponding circular hole for the corresponding electromagnetic wave to pass through, the electromagnetic waves between the receivers of the GPR and the electromagnetic induction detector are not easily interfered due to the special design of the metal shielding box; the working principle is as follows: since the inner side plate and the multi-layer shielding plate are arranged at the connection position between the two detection positions, and the connection between the two detection positions is the shortest distance for electromagnetic wave propagation, this propagation path is the main path that may affect the electromagnetic waves of the two; the multi-layer shielding of the two inner side plates and the multi-layer shielding plate can shield most of the electromagnetic interference; the annular channel is arranged to enable the GPR and the electromagnetic induction detector to interchange positions, because in some complex scenes of cooperative detection, when the electromagnetic induction detector detects a metal pipeline, the position needs to be marked and the GPR is used to detect a non-metal pipeline; during this process, the trolley cannot be moved, so the walking mechanism of the GPR and the electromagnetic induction detector is used to drive the two to move synchronously, and the inner and outer side plates on both sides of the annular channel guide the two to interchange positions smoothly; in order to prevent a part of the electromagnetic waves from propagating along the annular channel and interfering with each other, a normally closed shielding door is arranged on both sides of the annular channel; the walking mechanism pushes open the shielding door, and the shielding door is closed under the action of the torsional spring, so as to realize the shielding effect as much as possible; the circular hole in the bottom plate ensures that the probes of the GPR and the electromagnetic induction detector can work normally under the premise of shielding the electromagnetic waves propagating from the bottom as much as possible; the circular hole in the top plate ensures that the communication between the GPR, the electromagnetic induction detector and the controller is not affected under the condition of reducing the interference between the two as much as possible. It can be seen that the pipeline detection equipment integrated device can integrate the electromagnetic induction detector and the GPR, reduce the electromagnetic interference between the two as much as possible, improve the positioning accuracy of the marked position, and further improve the detection accuracy. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a handcart, representing an embodiment of the pipeline detection equipment integration device of the present invention.

[0019] Figure 2 for Figure 1 Top view;

[0020] Figure 3 A 3D view of the detection module;

[0021] Figure 4 for Figure 3 A 3D view after removing the top panel;

[0022] Figure 5 for Figure 3 A longitudinal section diagram;

[0023] Figure 6 for Figure 4 A top view (both the GPR and the receiver of the electromagnetic induction detector are in the detection position).

[0024] Figure 7 for Figure 6 A schematic diagram showing the state of the receiver of the GPR and electromagnetic induction detector as they move along the annular channel;

[0025] In the diagram: 1-Trolley, 11-Chassis plate, 111-Mounting slot, 112-Avoidance hole, 12-Wheel, 13-Push frame, 14-Controller; 2-Detection module, 21-Metal shielding box, 211-Bottom plate, 212-Top plate, 213-Inner side plate, 214-Outer side plate, 215-Shielding plate, 216-Shielding door, 2161-Torsion spring, 2162-Stop bar, 217-Annular channel, 218-Round hole, 219-Detection position, 22-GPR, 23-Receiver of electromagnetic induction detector. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the invention and are not intended to limit the invention; that is, the described embodiments are merely some embodiments of the invention, and not all embodiments. The components of the embodiments of the invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0028] It should be noted that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0029] The features and performance of the present invention will be further described in detail below with reference to embodiments.

[0030] An embodiment of the pipeline detection equipment integration device of the present invention: as follows Figures 1-7 As shown, the device mainly includes a handcart 1 and a detection module 2.

[0031] like Figures 1-2 As shown, the handcart 1 includes a rectangular chassis plate 11, four evenly distributed wheels 12, a push frame 13, and a controller 14. The chassis plate 11 is made of metal steel plate, and the wheels 12 include two directional rubber wheels and two omnidirectional wheels. The push frame 13 is welded and fixed to the chassis plate 11, and the controller 14 is mounted and fixed to the upper part of the push frame 13 for easy operation and viewing. The handcart 1 includes a chassis plate 11, on which a mounting groove 111 with the same outer dimensions as the metal shielding box 21 is provided for mounting the metal shielding box 21. The bottom of the mounting groove 111 is provided with coaxial clearance holes 112 corresponding to the two circular holes 218 of the chassis plate 211. The handcart 1 includes a push frame 13, on which a controller 14 with a touch screen is provided. The controller 14, GPR 22, and the receiver 23 of the electromagnetic induction detector all include wireless communication modules for communication between them.

[0032] like Figures 3-4As shown, the detection module 2 is installed on the handcart 1, including a metal shielding box 21, a GPR 22, and a receiver 23 of the electromagnetic induction detector. The metal shielding box 21 is waist-shaped and includes a bottom plate 211, a top plate 212, side plates, and multiple shielding plates 215. The side plates include inner side plates 213 and outer side plates 214 that are nested together. The inner and outer side plates 214 form a long, narrow annular channel 217 similar to a running track. Detection positions 219 for the GPR 22 and the receiver 23 of the electromagnetic induction detector are respectively provided at both ends of the annular channel 217 along its length. Corresponding detection positions are provided on the top plate 212 and the bottom plate 211. Positions 219 are each provided with a circular hole 218. Shielding doors 216 are respectively provided on both sides of the line connecting the two detection positions 219 on the annular channel 217. The shielding doors 216 are held in the closed position by torsion springs 2161. Multi-layer shielding plates 215 are spaced apart on the line connecting the two detection positions 219. Both the GPR22 and the receiver 23 of the electromagnetic induction detector include a walking mechanism. The GPR22 and the receiver 23 of the electromagnetic induction detector can move within the annular channel 217 through the walking mechanism to interchange positions. The probes of the GPR22 and the receiver 23 of the electromagnetic induction detector are coaxially arranged with the circular holes 218 of the corresponding detection positions 219. The bottom plate 211, top plate 212, side plates, shielding plates 215, and shielding doors 216 of the metal shielding box 21 each include two layers: a permalloy layer and a copper mesh layer. Since the GPR22 and the electromagnetic induction detector respectively handle high-frequency electromagnetic waves and low-frequency magnetic fields, the permalloy layer can effectively suppress low-frequency magnetic fields, while the copper mesh layer can effectively shield high-frequency electromagnetic waves. The wheels 12 of the walking mechanism move along the guide rail. The guide rail design allows for more precise movement of the GPR22 and the electromagnetic induction detector within the annular channel 217, especially when moving to the corresponding detection position 219, ensuring the coaxiality of their probes with the corresponding circular holes 218 on the base plate 211. The shielding door 216 can only open clockwise in one direction, and the walking mechanism of the GPR22 and the receiver 23 of the electromagnetic induction detector moves clockwise along the guide rail. Infrared sensors are respectively installed at the two circular holes 218 on the top plate 212 to detect whether the receiver 23 of the GPR22 and the electromagnetic induction detector has reached the corresponding detection position 219, thereby improving the positioning accuracy of the GPR22 and the electromagnetic induction detector at the detection position 219.

[0033] In other embodiments, the top plate 212 of the metal shielding box 21 is connected to a rotating shaft, and a motor is fixed on the outer peripheral surface of the side plate. The control module of the motor is connected to the controller 14. Under the control of the controller 14, the motor can drive the top plate 212 to rotate to realize the opening and closing of the metal shielding box 21. Through this design, the top plate 212 can be frequently opened and closed, so that the interference between GPR22 and electromagnetic induction detector is intermittent during detection, thereby reducing the duration of interference, while not affecting the communication with the controller 14.

[0034] In use, the integrated pipeline detection device of the present invention places the detection template on a handcart 1 and moves the handcart 1 to perform detection. During the detection process, the GPR22 and the receiver 23 of the electromagnetic induction detector are respectively located at two detection positions 219. Since the bottom plate 211 of the detection position 219 is provided with corresponding circular holes 218, the corresponding electromagnetic waves can pass through. However, due to the special design of the metal shielding box 21 between the two detection positions 219, the electromagnetic waves between the GPR22 and the receiver 23 of the electromagnetic induction detector are not easily interfered with. Its working principle is as follows: Since the inner side plate 213 and the multi-layer shielding plate 215 are set at the connection position between the two detection positions 219, and the connection between the two detection positions 219 is the shortest distance for electromagnetic wave propagation, this propagation path is the main path of electromagnetic waves that may affect both. The multi-layer shielding of the two inner side plates 213 and the multi-layer shielding plate 215 can shield most of the electromagnetic interference. The setting of the annular channel 217 allows the GPR22 and the electromagnetic induction detector to interchange positions, because in some collaborative detection complex In complex scenarios, when the electromagnetic induction detector detects a metal pipe, it needs to mark the location and use GPR22 to detect non-metallic pipes. During this process, the handcart 1 cannot move. This application can use the walking mechanism of GPR22 and electromagnetic induction detector to drive them to move synchronously. Under the guidance of the inner and outer side plates 214 on both sides of the annular channel 217, they can easily exchange positions. In order to prevent some electromagnetic waves from propagating along the annular channel 217 and causing interference, normally closed shielding doors 216 are set on both sides of the annular channel 217. The walking mechanism pushes open the shielding doors 216, and after passing through, the shielding doors 216 close under the action of torsion spring 2161, so as to minimize the shielding effect. The circular hole 218 on the bottom plate 211 ensures that the GPR22 and the probe of the electromagnetic induction detector can work normally while shielding the electromagnetic waves propagating from the bottom as much as possible. The circular hole 218 on the top plate 212 ensures that the communication between GPR22, electromagnetic induction detector and controller 14 is not affected while minimizing the interference between the two. As can be seen, the pipeline detection equipment integration device of this application can integrate an electromagnetic induction detector and a GPR22, and minimize electromagnetic interference between the two, and can improve the positioning accuracy of the marker position, thereby improving the detection accuracy.

[0035] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. The scope of patent protection of the present invention shall be determined by the claims. Similarly, any equivalent structural changes made based on the description and drawings of the present invention shall also be included within the scope of protection of the present invention.

Claims

1. An integrated device for pipeline detection, comprising: trolley; Its characteristic is that it further includes: The detection module, mounted on a handcart, includes a metal shielding box and receivers for a GPR (Gas Probe) and an electromagnetic induction detector. The metal shielding box is oblong and includes a bottom plate, a top plate, side plates, and multiple shielding plates. The side plates include inner and outer side plates that are nested together, forming a long annular channel. Detection positions for the GPR and electromagnetic induction detector receivers are respectively set at both ends of the annular channel along its length. The top and bottom plates have circular holes corresponding to the detection positions. Shielding doors are set on both sides of the line connecting two detection positions on the annular channel. The shielding doors are kept closed by torsion springs. The multiple shielding plates are spaced apart along the line connecting two detection positions. Both the GPR and electromagnetic induction detector receivers include a walking mechanism, allowing them to move within the annular channel to interchange positions. The probes of the GPR and electromagnetic induction detector receivers are coaxially aligned with the circular holes of the corresponding detection positions.

2. The pipeline detection equipment integrated device according to claim 1, characterized in that, The metal shielding box consists of two layers: a permalloy layer and a copper mesh layer.

3. The pipeline detection equipment integrated device according to claim 1, characterized in that, The base plate is provided with guide rails, and the wheels of the walking mechanism move along the guide rails.

4. The pipeline detection equipment integrated device according to claim 3, characterized in that, The shielding door can only be opened in one direction, clockwise, and the traveling mechanism of the receiver of the GPR and electromagnetic induction detector moves clockwise along the guide rail.

5. The pipeline detection equipment integrated device according to claim 1, characterized in that, Infrared sensors are respectively installed at the two circular holes on the top plate to detect whether the receivers of the GPR and electromagnetic induction detector have reached the corresponding detection positions.

6. The pipeline detection equipment integrated device according to claim 1, characterized in that, The handcart includes a chassis plate, on which a mounting groove with the same dimensions as the metal shielding box is provided for mounting the metal shielding box. The bottom of the mounting groove is provided with coaxial clearance holes corresponding to the two circular holes of the chassis plate.

7. The pipeline detection equipment integrated device according to claim 1, characterized in that, The trolley includes a pusher frame with a controller equipped with a touch screen. The controller, the GPR, and the receiver of the electromagnetic induction detector all include wireless communication modules for communication between them.

8. The pipeline detection equipment integrated device according to claim 7, characterized in that, The top plate of the metal shielding box is connected to a rotating shaft, and a motor is fixed to the outer circumference of the side plate. The motor's control module is connected to the controller. Under the control of the controller, the motor can drive the top plate to rotate to realize the opening and closing of the metal shielding box.

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