Leakage detection device for steel wire pipe

Abstract

The utility model discloses a leak detection device for a steel wire pipe, which belongs to the technical field of pipeline monitoring and comprises a resistance measuring device connected with a steel wire layer of the steel wire pipe through a lead. The resistance measuring device is connected with the information collection processor through a cable, and the information collection processor is connected with the terminal processor through a cable. The leakage condition of the pipeline can be monitored in real time, the leakage position of the pipeline can be accurately positioned, and the positioning precision is high.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipeline monitoring, and particularly relates to a leakage detection device for a steel wire pipe. Background Art

[0002] The statements in this section merely provide background technical information related to the present invention and do not necessarily constitute prior art.

[0003] Steel wire mesh skeleton polyethylene composite pipe (hereinafter referred to as "steel wire pipe") is a composite pipe with polyethylene as the matrix, a mesh skeleton formed by continuous spiral winding of steel wire coated with adhesive resin as the reinforcement, and the reinforcement and the matrix are melted and composited with adhesive resin to form a composite pipe. Steel wire pipe is widely used in various fields and various working conditions due to its superior product performance. In the production process of steel wire pipe, the steel wire used is not continuous, but is placed on a turntable in a coil. Therefore, when the steel wire in the wire coil is wound, the coil needs to be replaced. The steel wire after the coil is replaced is fixed to the steel wire before the coil is replaced by crimping. Because the steel wire is not continuous, once the pressure is too high during the normal installation and use of the pipe, this part of the area becomes the weak point of the pipe and is the first to be damaged.

[0004] Steel wire pipe has a wide pressure range (0.8MPa to 10.0MPa) and a wide variety of connection methods. Low-pressure applications generally utilize electric fusion and socket connections, while high-pressure applications utilize clamps or flanges. Leakage is generally avoided with these various connection methods, with problems typically occurring near the joints. The ends of the steel wire pipe are butt-fused, with sealing rings used to seal the wire and rubber layers at the ends, preventing water leakage during normal use.

[0005] However, water penetration is often a long-term creep process. While the pipe will not leak during the installation pressure test, if the sealing quality is not effectively controlled, water will enter the steel wire layer and the rubber layer through the sealing ring after the pipe has been in operation for a period of time, causing the pipe to be damaged by "water penetration". Currently, the main laying conditions for steel wire pipes are underground and installed in pipe corridors and tunnels. When the pipeline is operating normally, it is necessary to monitor the pipeline leakage and accurately locate the leak. The location of the leak can be confirmed through pipeline inspections for exposed pipelines, but this wastes manpower, has poor timeliness, and has certain limitations. Directly buried pipelines can be confirmed through detection methods such as acoustic testing and ultrasound, but the positioning accuracy is poor and the process is time-consuming. Utility Model Content

[0006] In view of the above problems, the utility model provides a leak detection device for a steel wire pipe, which can monitor the leakage of the pipeline in real time and accurately locate the leakage position of the pipeline with high positioning accuracy.

[0007] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0008] A leak detection device for a steel wire pipe comprises a resistance measuring device connected to a steel wire layer of the steel wire pipe via a conductor; the resistance measuring device is connected to an information collection processor via a cable, and the information collection processor is connected to a terminal processor via a cable.

[0009] Furthermore, the resistance measuring device includes a power supply, the positive electrode of the power supply is connected to one end of the detection ammeter through a wire, and the negative electrode of the power supply is connected to one end of the switch through a wire.

[0010] Furthermore, the detection ammeter is connected in parallel with the detection voltmeter, the other end of the detection ammeter is connected to one end of the steel wire layer through a wire, and the other end of the switch is connected to the other end of the steel wire layer through a wire.

[0011] Furthermore, the power source is a battery or an external power source.

[0012] Furthermore, the resistance measuring device is used to detect voltage and current, and the resistance measuring device corresponds to the pipe number and pile number information of the pipe.

[0013] Furthermore, the information collection processor is used to aggregate the current, voltage, pipe number and stake number data to the terminal processor via the cable.

[0014] Furthermore, the terminal processor is used to display the pipe number, pile number, current and voltage of each pipe in real time.

[0015] Furthermore, the terminal processor is provided with an alarm device, and the alarm device is used to sound an alarm.

[0016] Furthermore, the terminal processor is associated with a collection application, and the collection application is used to display alarm information.

[0017] Furthermore, the terminal processor may be connected to a plurality of information collection processors, and the information collection processor may be connected to a plurality of resistance measuring devices.

[0018] Compared with the prior art, the advantages and positive effects of this utility model are:

[0019] After the pipe is energized, the utility model measures the voltage and current through the resistance measuring device, and transmits the voltage, current, pipe number and pile number information to the information collection processor through the cable. The information collection processor summarizes the data and then transmits it to the terminal processor through the cable. The terminal processor displays the pipe number, pile number, current and voltage of each pipe in real time, thereby monitoring the leakage of the pipeline in real time.

[0020] The pipe number and stake number information can accurately locate the leaking pipe, allowing maintenance personnel to accurately pinpoint the leak. Furthermore, the terminal processor is connected to an alarm device, which can promptly issue an alert to alert maintenance personnel of leaks. The terminal processor is also linked to a data collection application, transmitting alarm information to the maintenance personnel's mobile phone, providing timely feedback and strong applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0022] Figure 1 This is a structural diagram of the wire tube docking position;

[0023] Figure 2 This is an enlarged view of the structure of the wire pipe docking position;

[0024] Figure 3 It is a schematic diagram of the resistance measuring device of the present utility model;

[0025] Figure 4 This is an enlarged view of the connection position between the resistance measuring device and the steel wire tube of the utility model;

[0026] Figure 5 This is a system diagram of a small leak detection device of the utility model;

[0027] Figure 6 This is a system diagram of a large leak detection device of the utility model;

[0028] In the figure: 1. Outer layer of steel wire tube; 2. Steel wire layer; 3. Inner layer of steel wire tube; 4. PE sealing ring; 5. Electric melting position; 6. Resistance measuring device; 61. Wire; 62. Power supply; 63. Monitoring voltmeter; 64. Monitoring ammeter; 65. Switch; 7. Cable; 8. Information collection processor; 9. Terminal processor. DETAILED DESCRIPTION

[0029] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0030] like Figure 1 As shown, the steel wire tube comprises a steel wire tube outer layer 1, a steel wire tube inner layer 3 and a steel wire layer 2. The steel wire layer 2 is arranged between the steel wire tube outer layer 1 and the steel wire tube inner layer 3. Figure 2As shown, the two steel pipe ends are butt-welded by hot-melt, and the steel wire layer 2 and the rubber layer at the end face are sealed using a PE sealing ring 4. However, leakage often occurs near the butt joint, so this position needs to be monitored and repaired in a timely manner.

[0031] Example 1:

[0032] The following drawings are combined to describe the present invention in detail. The present embodiment discloses a leak detection device for a steel wire pipe. Figure 1 As shown, it includes a resistance measuring device 6, which is connected to the steel wire layer 2 of the steel wire tube through a wire 61; the resistance measuring device 6 is connected to the information collection processor 8 through a cable 7, and the information collection processor 8 is connected to the terminal processor 9 through the cable 7.

[0033] Resistance measuring device 6 detects voltage and current, corresponding to the pipe number and stake number. Information collection processor 8 aggregates current, voltage, pipe number, and stake number data via cable 7 to terminal processor 9. Terminal processor 9 displays the pipe number, stake number, current, and voltage of each pipe in real time.

[0034] The detection voltage and detection current data signals are transmitted to the information collection processor 8 through the cable 7 or optical fiber, and then the information collection processor 8 aggregates the data through the cable 7 or optical fiber information to the terminal processor 9. The terminal processor 9 can display various information of each pipe in real time through system settings;

[0035] like Figure 3 As shown, the resistance measuring device 6 includes a power supply 62. The positive electrode of the power supply 62 is connected to one end of a monitoring ammeter 64 via a wire 61, and the negative electrode of the power supply 62 is connected to one end of a switch 65 via a wire 61. The monitoring ammeter 64 is connected in parallel with the monitoring voltmeter 63. The other end of the monitoring ammeter 64 is connected to one end of the steel wire layer 2 via a wire 61. The other end of the switch 65 is connected to the other end of the steel wire layer 2 via a wire 61.

[0036] Connect the wires 61 at both ends of the resistance measuring device 6 to the steel wire layer 2, close the switch 65, and start the resistance measuring device to energize the surface of the steel wire layer 2. The monitoring ammeter 64 detects the current to obtain the current value, and the monitoring voltmeter 63 detects the voltage to obtain the voltage value. When a leak occurs in the steel wire layer 2, the current value and the voltage value will change, and the specific leakage situation can be judged by the changes in the current value and the voltage value.

[0037] The power source 62 is a battery or an external power source 62. When the battery is damaged and cannot be used any more, a new battery can be directly used to replace it, which is convenient to use.

[0038] like Figure 4As shown, the resistance measuring device 6 is connected to the steel wire tube by welding with a wire 61. The welding position is located within 300-500 mm from the joint at both ends of the tube. First, the outer layer 1 of the steel wire tube is peeled off to expose the steel wire layer 2. After the wire 61 is welded to the steel wire, the peeled area is repaired to isolate the repaired area from the influence of external moisture.

[0039] After the resistance measuring device 6 of each pipe is powered on, the current and voltage information of the corresponding pipe can be displayed in real time; this information is transmitted to the information collection processor 8 via the cable 7 or optical fiber, and the information collection processor 8 summarizes the data to the terminal processor 9 via the cable 7 or optical fiber information. The terminal processor 9 can display the pipe number, pile number, current and voltage of each pipe in real time through system settings. These data are monitored as basic data.

[0040] Once the pipe is damaged by "water penetration", the corresponding pipe resistance value will change, and the data will exceed the basic data range. The terminal processor 9 will send an alarm or application alarm information from the computer side to feedback the pipe number and pile number information of the problem.

[0041] Supervisory inspectors can quickly reach the designated location to confirm and carry out emergency repairs based on the pipe number and pile number information provided by the system.

[0042] The terminal processor 9 is electrically connected to an alarm device, which sounds an alarm. The terminal processor 9 is associated with a collection application, which displays alarm information. The terminal processor is equipped with an alarm device or an associated collection application. When a significant change in a value occurs, an alarm sounds or a notification is pushed to alert supervisors to confirm the information.

[0043] The terminal processor 9 can be connected to multiple information collection processors 8, and the information collection processor 8 can be connected to multiple resistance measuring devices 6. By cooperating with multiple information collection processors 8 and multiple resistance measuring devices 6, the leak detection device can be applied to pipeline systems of different sizes.

[0044] like Figure 5 As shown, a small pipeline system includes multiple resistance measuring devices 6, which are connected to an information collection processor 8 through a cable 7. The information collection processor 8 summarizes the voltage, current, pipe number and pile number information of each steel pipe. After the summary is completed, the information is transmitted to the terminal processor 9 through the cable 7. The terminal processor 9 displays the information of the steel pipe and issues an alarm when it exceeds the normal range.

[0045] like Figure 6As shown, a large-scale pipeline system is provided. For a large-scale pipeline system, the laying of the cable 7 or optical fiber is difficult and costly. A hierarchical information collection processor 8 needs to be provided to transmit information to the terminal processor 9 step by step, so that the leakage of multiple steel pipes can be monitored at the same time, thereby improving the applicability.

[0046] Although the above description of the specific implementation methods of the present invention is combined with the accompanying drawings, it does not limit the scope of protection of the present invention. Technical personnel in the relevant field should understand that on the basis of the technical solution of the present invention, various modifications or deformations that can be made by technical personnel in this field without creative work are still within the scope of protection of the present invention.

Claims

1. A leak detection device for a steel wire pipe, characterized in that: It comprises a resistance measuring device, which is connected to the steel wire layer of the steel wire tube through a conducting wire; the resistance measuring device is connected to an information collection processor through a cable, and the information collection processor is connected to a terminal processor through a cable.

2. A leak detection device for a steel wire pipe as claimed in claim 1, characterized in that: The resistance measuring device comprises a power supply, the positive electrode of the power supply is connected to one end of the detection ammeter through a wire, and the negative electrode of the power supply is connected to one end of the switch through a wire.

3. A leak detection device for a steel wire pipe as claimed in claim 2, characterized in that: The detection ammeter is connected in parallel with the detection voltmeter, the other end of the detection ammeter is connected to one end of the steel wire layer through a wire, and the other end of the switch is connected to the other end of the steel wire layer through a wire.

4. A leak detection device for a steel wire pipe as claimed in claim 2, characterized in that: The power source is a battery or an external power source.

5. A leak detection device for a steel wire pipe as claimed in claim 1, characterized in that: The resistance measuring device is used to detect voltage and current, and the resistance measuring device corresponds to the pipe number and pile number information of the pipe.

6. A leak detection device for a steel wire pipe as claimed in claim 1, characterized in that: The information collection processor is used to collect the current, voltage, pipe number and pile number data into the terminal processor through the cable.

7. A leak detection device for a steel wire pipe as claimed in claim 1, characterized in that: The terminal processor is used to display the pipe number, pile number, current and voltage of each pipe in real time.

8. A leak detection device for a steel wire pipe as claimed in claim 1, characterized in that: The terminal processor is provided with an alarm device, and the alarm device is used to sound an alarm.

9. A leak detection device for a steel wire pipe as claimed in claim 1, characterized in that: The terminal processor is associated with a collection application, and the collection application is used to display alarm information.

10. A leak detection device for a steel wire pipe as claimed in claim 1, characterized in that: The terminal processor may be connected to a plurality of information collection processors, and the information collection processor may be connected to a plurality of resistance measuring devices.

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