Cable aging monitoring device in metering box

Abstract

A cable aging monitoring device in a metering box comprises a device body provided with a hollow cavity, the device body is provided with a wire passing hole for a cable to pass through in a penetrating mode, and an infrared detection mechanism, a hardness detection mechanism and an ultrasonic detection mechanism are arranged in the hollow cavity around the circumference of the wire passing hole; the infrared detection mechanism comprises an infrared generator and an infrared receiver which face the same position of the wire passing hole and are symmetrically arranged; the hardness detection mechanism comprises a driving hammer which faces the wire passing hole and has an elastic reset function. The driving hammer is driven by magnetic force, and a springback induction coil is arranged on the outer side of the driving hammer. The roughness of the insulating sheath is detected through infrared, the hardness of the insulating sheath is detected through the hardness detection mechanism, the density is detected through the ultrasonic detection mechanism, all the aging parameters of the cable are measured, and the device is further provided with the induction magnetic ring coil and the battery for self-power-taking, so that extra power supply is not needed, and the cost is reduced. And the service time is very long.

Description

TECHNICAL FIELD

[0001] The utility model relates to technical fields, concretely is a kind of cable aging monitoring device in metering box. BACKGROUND

[0002] With the rapid development of China's economy, the demand for electricity also increases, and the fire accidents caused by line aging also increase year by year every year. As the terminal equipment of power transmission and distribution, the metering box has a large base and is difficult to manage and maintain. If the line aging in the metering box cannot be found in time, it is easy to cause power failure, fire and other accidents.

[0003] And the existing way of patrolling and regularly replacing lines, based on the large base, requires more staff, and regularly replacing lines not only takes time and effort, but also needs to be powered off to facilitate operation. UTILITY MODEL CONTENT

[0004] To solve the above-mentioned problem of lacking a cable aging monitoring structure, the utility model provides a cable aging monitoring device in metering box.

[0005] The utility model technical scheme is as follows:

[0006] A cable aging monitoring device in metering box, comprising a device body provided with a hollow cavity, the device body is provided with a wire passing hole through which the cable passes, and the hollow cavity is provided with an infrared detection mechanism, a hardness detection mechanism and an ultrasonic detection mechanism around the wire passing hole;

[0007] The infrared detection mechanism comprises an infrared generator and an infrared receiver symmetrically arranged towards the same position of the wire passing hole;

[0008] The hardness detection mechanism comprises a hammer with elastic return function towards the wire passing hole, and the hammer is driven by magnetic force and provided with a rebound induction coil on the outside.

[0009] The roughness of the insulating outer skin is detected by the infrared detection, the hardness of the insulating outer skin is detected by the hardness detection mechanism, and the density is detected by the ultrasonic detection mechanism, so as to complete the measurement of all aging parameters of the cable.

[0010] The specific structure of the cable is that the cable comprises a cable copper core and an insulating outer skin on the outside, and the insulating outer skin is tightly attached to the wire passing hole in the circumferential direction.

[0011] In order to realize self-power supply, the hollow cavity is provided with an induction magnetic ring coil on the outside of the wire passing hole in the circumferential direction, and the induction magnetic ring coil is connected with a battery, and the battery is arranged at a position away from the wire passing hole in the hollow cavity. The battery is charged by the induced current of the induction magnetic ring coil.

[0012] The power supply mode is that the battery is connected with the infrared detection mechanism, the hardness detection mechanism and the ultrasonic detection mechanism.

[0013] In order to ensure that the hammer can hit the insulating layer and make it concave, the stroke of the hammer is greater than the distance between the hammer and the insulating outer skin.

[0014] The specific structure of the hardness detection mechanism is that the hardness detection mechanism comprises a hardness detection shell provided with a cavity, a detection hole is arranged on the side of the hardness detection shell facing the wire passing hole, the end of the hammer can pass through the detection hole, and a spring is arranged between the hammer and the hardness detection shell, and the driving direction of the spring is away from the wire passing hole.

[0015] The driving mode of the hammer is that the tail of the hammer is made of magnetic material, and a magnetic driving coil is arranged around the tail, and the driving direction of the magnetic driving coil is towards the wire passing hole.

[0016] The hardness detection mode is that a rebound induction coil is arranged around the hammer, and the magnetic driving coil and the rebound induction coil are connected with the control panel. The rebound speed is calculated through the induced current of the rebound induction coil, and the rebound speed can represent the hardness of the insulating layer.

[0017] As a preferred solution, the cable clamping mechanism is arranged around the wire passing hole on the outer side of the device body.

[0018] In order to facilitate the alarm, the device body is provided with an aging alarm lamp, the aging alarm lamp is connected with the control panel, and the control panel is also connected with the infrared detection mechanism and the ultrasonic detection mechanism.

[0019] The beneficial effects of the utility model lie in that the utility model is a kind of cable aging monitoring device in metering box, and the aging condition of cable in metering box can be remotely monitored by infrared detection mechanism, hardness detection mechanism and ultrasonic detection mechanism, and in the above structure, self-power can be achieved, so use time is very long, and aging alarm lamp is set, which can also prompt line aging condition to line patrol personnel, ensure that line aging hidden danger is discovered in time, solve the problems of large base number of cable in metering box, difficult management and maintenance, high maintenance personnel cost and the like. BRIEF DESCRIPTION OF DRAWINGS

[0020] The scheme and advantages of the present application will become clear to those skilled in the art by reading the detailed description of the preferred embodiments below. The drawings are only for the purpose of showing the preferred embodiments and are not considered as limiting the utility model.

[0021] In the drawings:

[0022] Figure 1 It is a structural schematic diagram of the utility model.

[0023] Figure 2 It is the sectional structure schematic view of the utility model;

[0024] Figure 3 It is the sectional structure schematic view (after passing through cable) of the utility model;

[0025] Figure 4 It is the local structure schematic view of the utility model;

[0026] Figure 5 It is the fixed structure schematic view of the utility model;

[0027] The component represented by each reference sign in the drawing is:

[0028] 01, device body;02, cable through hole;03, cable clamping mechanism;04, aging alarm lamp;05, fixing hole;06, infrared receiver;07, infrared generator;08, battery;09, control panel;10, inductive magnetic ring coil;11, ultrasonic transceiver;12, hardness detection shell;13, magnetic power coil;14, rebound induction coil;15, hammer;16, auxiliary spring;17, insulating sheath;18, cable copper core;19, fixed plane. DETAILED DESCRIPTION

[0029] EMBODIMENT

[0030] As Figures 1-5 shown, a kind of cable aging monitoring device in metering box, including the hollow cavity of device body 1 being arranged, the device body 1 is arranged with the through hole of cable passing through, when using, the cable to be detected is passed through the through hole, but it will not affect the normal use of cable, and the specific structure of above-mentioned cable is, the cable includes cable copper core 18 and the insulating sheath 17 outside, the insulating sheath 17 and the through hole circumferential close. After hollow cavity is circumferentially provided with infrared detection mechanism, hardness detection mechanism and ultrasonic detection mechanism around through hole, and respectively can complete the detection of cable's sheath aging, hardness and density, to monitor aging by above-mentioned three data in turn;

[0031] First, the infrared detection mechanism includes the infrared generator 7 and infrared receiver 6 being symmetrically arranged towards the same position of through hole, as Figure 4 Shown, infrared generator 7 sends infrared through the insulating sheath 1 and enters infrared receiver 6 after refraction, when the insulating sheath 17 is healthy, infrared generator 7 emits infrared light to cable insulating layer surface, is reflected to infrared receiver 6 according to reflected light intensity after surface reflection and generates corresponding voltage signal URa, cable surface roughness can affect the reflection intensity of infrared light, URa is greater, represents that cable surface is smoother, represents that cable state is better at this moment.

[0032] After that, density detection is also needed, the cable insulation layer density is detected by the ultrasonic transceiver 11 through ultrasonic waves, and a corresponding voltage signal Uρ is generated, and the greater the density value represents the better the current state of the cable insulation layer.

[0033] Finally, hardness detection is performed, and the hardness detection mechanism includes a hammer 15 that is elastic and is arranged towards the wire passing hole, the hammer 15 is driven by magnetic force and is provided with a rebound induction coil 14 on the outside, and the rebound speed is detected through the rebound of the hammer 15.

[0034] The specific structure of the above mechanism is that the hardness detection mechanism includes a hardness detection shell 12 that is provided with a cavity, which is used to isolate a space in the hollow cavity, and then the hardness detection shell 12 is provided with a detection hole on the side towards the wire passing hole, the opening direction of the detection hole is perpendicular to the cable, and the end of the hammer 15 can pass through the detection hole, thereby being able to impact the insulation sheath 17, and a spring is arranged between the hammer 15 and the hardness detection shell 12, which is used for resetting, so as to ensure that the hammer 15 can be reset to the original position after impacting the insulation sheath 17, and at the same time, the speed is detected and the hardness of the insulation layer is reflected. For this purpose, the direction in which the spring drives the hammer 15 is away from the wire passing hole, so as to ensure that the hammer 15 has a resetting function and will not be affected by a large friction force.

[0035] Since the hammer 15 is located inside the hollow cavity and needs to be quickly moved, the way to drive the hammer 15 to move is that the tail of the hammer 15 is made of magnetic material and is wound with a magnetic power coil 13, and the direction in which the magnetic power coil 13 drives the hammer 15 is towards the wire passing hole. At the same time, the way to detect the hardness is that the hammer 15 is wound with a rebound induction coil 14 on the outside, and the magnetic power coil 13 and the rebound induction coil 14 are connected with the control panel 9. The rebound speed is calculated through the induced current when the rebound passes through the rebound induction coil, and the rebound speed can represent the hardness of the insulation layer.

[0036] The specific implementation of the above structure is that the electromagnetic force generated by the magnetic power coil 13 pushes the auxiliary spring 16 to be compressed, and at the same time, the auxiliary spring 16 impacts the insulation sheath 17. After the impact is completed, the hammer 15 rebounds under the action of the reaction force and the auxiliary spring 16. Since the tail of the hammer 15 is made of magnetic material, when the hammer 15 passes through the rebound induction coil 14 (the coil 13 is in an open circuit state after the current pulse is ended, which does not affect the detection of the coil 14), a corresponding induced current IvR is generated. The greater the IvR represents the greater the rebound speed, and the greater the rebound speed represents the harder the insulation layer, and the worse the current state of the cable.

[0037] Therefore, in the above structure, in order to ensure that the hammer 15 can hit the insulating layer and make it concave, the stroke of the hammer 15 is greater than the distance between the hammer 15 and the insulating outer skin 17, that is, before hitting the insulating outer skin 17, the above hammer 15 will not cause the detection data to be wrong due to the collision with the hardness detection shell 12.

[0038] Through the above structure, the roughness of the insulating outer skin 17 is detected by infrared detection, the hardness of the insulating outer skin 17 is detected by the hardness detection mechanism, and the density detection is performed by the ultrasonic detection mechanism, thereby completing the measurement of all aging parameters of the cable.

[0039] For the above structure, if an additional battery is provided, it also needs to be replaced regularly, which is very inconvenient, so in order to realize self-power supply, the hollow cavity is provided with an inductive magnetic ring coil 10 outside the wire passing hole in the circumferential direction, and the inductive magnetic ring coil 10 is connected with a battery 8, and the battery 8 is arranged at a position away from the wire passing hole. The battery 8 is charged by the induced current of the inductive magnetic ring coil 10.

[0040] Moreover, the power supply mode is that the battery 8 is connected with the infrared detection mechanism, the hardness detection mechanism and the ultrasonic detection mechanism, and the controller. And in order to facilitate the alarm, the device body 1 is provided with an aging alarm lamp 4, which is connected with the control panel 9, and the control panel 9 is also connected with the infrared detection mechanism and the ultrasonic detection mechanism. After the problem occurs, the above aging alarm lamp 4 is turned on, and the above method can feedback the result. In order to facilitate remote notification, the above controller can be externally connected with a communication unit to send a signal through the communication unit to notify the above aging structure at a remote end.

[0041] Moreover, in order to avoid the cable moving around, the device body 1 is provided with a cable clamping mechanism 3 outside the wire passing hole in the circumferential direction.

Claims

1. A cable aging monitoring device for a metering box, comprising a device body (1) with a hollow cavity, characterized in that, The device body (1) is provided with a through hole for a cable to pass through, and an infrared detection mechanism, a hardness detection mechanism and an ultrasonic detection mechanism are arranged circumferentially around the through hole in the hollow cavity. The infrared detection mechanism includes an infrared generator (7) and an infrared receiver (6) symmetrically arranged facing the same position as the wire hole; The hardness testing mechanism includes a hammer (15) facing the wire hole and having an elastic reset function. The hammer (15) is driven by magnetic force and has a rebound induction coil (14) on its outer side.

2. The cable aging monitoring device in a metering box according to claim 1, characterized in that, The cable includes a copper core (18) and an outer insulating sheath (17), which is in close contact with the wire hole circumferentially.

3. The cable aging monitoring device in a metering box according to claim 1, characterized in that, The hollow cavity is provided with an induction magnetic ring coil (10) circumferentially outside the wire hole, and the induction magnetic ring coil (10) is connected to a battery (8). The battery (8) is located in the hollow cavity away from the wire hole.

4. The cable aging monitoring device in a metering box according to claim 3, characterized in that, The battery (8) is connected to the infrared detection mechanism, the hardness detection mechanism and the ultrasonic detection mechanism.

5. The cable aging monitoring device in a metering box according to claim 2, characterized in that, The stroke of the hammer (15) is greater than the distance between the hammer (15) and the insulating outer sheath (17).

6. The cable aging monitoring device in a metering box according to claim 1, characterized in that, The hardness testing mechanism includes a hardness testing housing (12) with a cavity. The hardness testing housing (12) has a testing hole on the side facing the wire hole. The end of the hammer (15) can pass through the testing hole. A spring is provided between the hammer (15) and the hardness testing housing (12). The spring drives the hammer (15) in a direction away from the wire hole.

7. The cable aging monitoring device in a metering box according to claim 6, characterized in that, The tail of the hammer (15) is made of magnetic material and is wound with a magnetic power coil (13). The magnetic power coil (13) drives the hammer (15) in the direction of the wire hole.

8. The cable aging monitoring device in a metering box according to claim 7, characterized in that, The hammer (15) is surrounded by a rebound induction coil (14), and the magnetic power coil (13) and the rebound induction coil (14) are connected to the control board (9).

9. The cable aging monitoring device in a metering box according to claim 1, characterized in that, The device body (1) is provided with a cable clamping mechanism (3) around the wire hole on the outside.

10. The cable aging monitoring device in a metering box according to claim 1, characterized in that, The device body (1) is equipped with an aging alarm light (4), which is connected to the control board (9), and the control board (9) is also connected to the infrared detection mechanism and the ultrasonic detection mechanism.

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