CN218383128U - Power cable insulation detection sensor - Google Patents

Abstract

The utility model provides a power cable is sensor for insulation detection. According to the technical scheme, the assembly structure of the sensor is optimized and improved on the premise of not changing the detection principle. Specifically, the utility model adopts the closed cylinder to construct the containing space, and the shielding coil is arranged outside the cylinder, thereby overcoming the influence of the external environment on the detection structure; on the basis, a core rod with a positioning function is arranged in the cylinder, and the core rod with the transverse through hole bears the first connector on one hand and plays a role in guiding the lead on the other hand; meanwhile, the bottom end and the side end of the first joint are fixed by the positioning plate and the clamping piece respectively, so that the stability of the internal assembly structure is ensured. Furthermore, the utility model discloses set up the clamp plate on the top, still can adopt bee calling organ to report to the police to perfected the service function of sensor to a certain extent. The utility model discloses assembly structure is more reasonable, and the structure is more stable, has apparent technological progress.

Description

Power cable insulation detection sensor

Technical Field

The utility model relates to a cable detects technical field, concretely relates to power cable is sensor for insulation detection.

Background

In the operation and maintenance of power engineering, the detection of cables is an important link for ensuring the safe operation of a power system. According to relevant regulations of national standards, detection items of the electric wire and the electric cable mainly comprise detection of two aspects of electrical performance and mechanical performance, wherein the electrical performance detection mainly comprises contents of direct current resistance detection, insulation resistance detection, power frequency voltage withstanding detection and the like.

Insulation resistance detection is the fundamental detection to ensure cable safety. The insulation resistance measurement of a wire and cable must be converted into an insulation resistance value per kilometer, which is inversely proportional to the length of the wire and cable, unlike the direct current resistance. In the prior art, the conventional detection method is a high impedance meter method. The measuring voltages in the detection of the insulation resistance of the low-voltage wire and cable are 100V, 250V, 500V and 1000V, wherein the 100V and 500V detecting voltages are widely used in the detection of a quality inspection department; the length of the wire cable to be measured is not specified, but is generally 10m for measurement and calculation convenience. The charge time before measurement is generally 1 minute. The detection method has the advantages of high precision, good repeatability and the like, but the operation is complex, and the detection efficiency is low. In response to these problems, in recent years, rapid detection devices based on sensors are gradually put on the market, and such sensors firstly construct a shielding space, and then collect current to form a detection result. At present, the assembly structure of a conventional sensor is complex, the structural stability is poor, and the failure rate is relatively high.

Disclosure of Invention

The utility model discloses aim at to prior art's technical defect, provide a power cable is sensor for insulation detection to the assembly structure who solves conventional sensor remains the technical problem who improves.

In order to realize the technical purpose, the utility model adopts the following technical proposal:

the sensor for detecting the insulation of the power cable comprises a barrel, a shielding coil, a core rod, a through hole, a tube body, an upper cover, a lead, a first joint, a positioning plate, a clamping piece, a mounting rack, a power supply, a lower cover, a second joint, a pressing plate, a bolt and a current sensor, wherein the shielding coil is arranged outside the barrel, the core rod is arranged in the barrel, the through hole vertical to the axis of the core rod is formed in the core rod, the tube body is inserted in the axis of the core rod and positioned above the through hole, the upper cover is arranged at the top end of the barrel, the two leads are connected to the upper cover, the first joint is arranged at the inner end of each lead, the mounting rack is fixedly connected to the bottom of the barrel, the positioning plate is connected to the mounting rack, the first joint is clamped to the positioning plate, the clamping piece is pressed at the side end of the first joint, the power supply is arranged at the bottom end of the barrel, the lower cover is clamped to the position below the power supply, the first joint is electrically connected to the power supply, the second joint is arranged at the outer end of each lead, the pressing plate is arranged on the upper cover, the pressing plate is tightly connected to the current sensor through the bolt, and the lead is electrically connected to the current sensor.

Preferably, the current sensor further comprises a buzzer, a connecting wire and a wire clamp, wherein the connecting wire is electrically connected with the buzzer, the wire clamp is arranged at the tail end of the connecting wire, and the wire clamp is connected with the output end of the current sensor.

Preferably, the bottom end of the upper cover is provided with a clamping ring, and the bottom end of the pipe body is clamped and fixed with the clamping ring.

Preferably, an induction coil is provided on an inner wall of the pipe body.

Preferably, the lower cover is provided with a communication port, the inner wall of the communication port is provided with a thread, and the thread is screwed with a screw.

In the above technical solution, the cylinder is used for constructing a closed space, thereby accommodating the electrical components; the shielding coil plays a role in electromagnetic shielding; the core bar is used for bearing and positioning internal electrical elements; the through hole is used for keeping the first joint in an exposed state; the pipe body is used for occupying space; the upper cover is used for bearing the second joint; the lead and the first connector are used for connecting the power supply and the second connector; the positioning plate is used for positioning the first joint; the clamping piece is used for fixing the first joint from the side; the mounting frame is used for fixing the positioning plate; the power supply is used for supplying power for the detection process; the lower cover is used for sealing the lower port of the cylinder body, and the clamping fixing mode is adopted to facilitate the replacement of the power supply; the second joint is used for connecting the site to be detected and judging whether the site to be detected is electrified or not through whether the current sensor responds or not under the action of a power supply; the pressing plate and the bolt are used for pressing and fixing the upper cover. The buzzer can play a role in alarming according to the detection result of the current sensor; the connecting wire and the wire clamp can be used for connecting the buzzer and the current sensor.

The utility model provides a power cable is sensor for insulation detection. According to the technical scheme, the assembly structure of the sensor is optimized and improved on the premise of not changing the detection principle. Specifically, the utility model adopts the closed cylinder to construct the containing space, and the shielding coil is arranged outside the cylinder, thereby overcoming the influence of the external environment on the detection structure; on the basis, a core rod with a positioning function is arranged in the cylinder, and the core rod with the transverse through hole bears the first connector on one hand and plays a role in guiding the lead on the other hand; meanwhile, the bottom end and the side end of the first joint are fixed by the positioning plate and the clamping piece respectively, so that the stability of the internal assembly structure is ensured. Furthermore, the utility model discloses set up the clamp plate on the top, still can adopt bee calling organ to report to the police to perfected the service function of sensor to a certain extent. The utility model discloses assembly structure is more reasonable, and the structure is more stable, has apparent technological progress.

Drawings

FIG. 1 is an external structural view of the present invention;

FIG. 2 is another external structural view of the present invention;

FIG. 3 is an exploded view of the entire invention;

FIG. 4 is an exploded view of a partial structure of the present invention;

in the figure:

1. barrel 2, shielding coil 3, core bar 4 and through hole

5. Body 6, upper cover 7, wire 8, first joint

9. Positioning plate 10, clamping pieces 11, mounting rack 12 and power supply

13. Lower cover 14, second joint 15, pressure plate 16 and bolt

17. Current sensor 18, buzzer 19, connecting wire 20, fastener.

Detailed Description

The following will describe in detail specific embodiments of the present invention. Well-known structures or functions may not be described in detail in the following embodiments in order to avoid unnecessarily obscuring the details. Approximating language, as used herein in the following examples, may be applied to identify quantitative representations that could permissibly vary in number without resulting in a change in the basic function. Unless defined otherwise, technical and scientific terms used in the following examples have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

Example 1

As shown in fig. 1 to 4, the sensor for detecting insulation of a power cable includes a barrel 1, a shielding coil 2, a core bar 3, a through hole 4, a tube body 5, an upper cover 6, a wire 7, a first joint 8, a positioning plate 9, a clamping piece 10, a mounting frame 11, a power supply 12, a lower cover 13, a second joint 14, a pressing plate 15, a bolt 16, and a current sensor 17, wherein the shielding coil 2 is arranged outside the barrel 1, the core bar 3 is arranged in the barrel 1, the core bar 3 is provided with the through hole 4 perpendicular to an axis of the core bar 3, the tube body 5 is inserted in the axis of the core bar 3, the tube body 5 is positioned above the through hole 4, the upper cover 6 is arranged at the top end of the barrel 1, the upper cover 6 is connected with two wires 7, the inner end of the wire 7 is provided with the first joint 8, the bottom of the barrel 1 is fixedly connected with the mounting frame 11, the mounting frame 11 is connected with the positioning plate 9, the first joint 8 is clamped on the positioning plate 9, the clamping piece 10 is pressed against the first joint 8, the bottom of the barrel 1 is provided with the power supply 12, the bottom end of the barrel 1 is provided with the power supply 12, the position below the power supply 12, the positioning plate 13 is connected with the positioning plate 6, the second joint 15 is connected with the positioning plate 6, the wire 15, the electrical connector 17, the electrical connection of the second joint 17, the pressure plate 6 is fastened with the pressure plate 6, the pressure plate 15, the electrical connection 17, the electrical connection plate 6, the pressure plate 6, the electrical connection plate 15 is provided with the pressure plate 17, and the pressure plate 15, the pressure plate 6, the electrical connection 17, the pressure sensor 17, and the pressure plate 15 are provided with the pressure plate 6, the pressure plate 6.

The structural features of this embodiment are as follows: the barrel 1 is used for constructing a closed space so as to accommodate electrical components; the shielding coil 2 plays a role of electromagnetic shielding; the core bar 3 is used for bearing and positioning internal electrical elements; the through hole 4 is used for keeping the first joint 8 exposed; the pipe body 5 is used for occupying space; the upper cover 6 is used for carrying the second joint 14; a wire 7 and a first connector 8 are used for connecting a power supply 12 and a second connector 14; the positioning plate 9 is used for positioning the first joint 8; the holding piece 10 is used for fixing the first joint 8 from the side; the mounting rack 11 is used for fixing the positioning plate 9; the power supply 12 is used for supplying power for the detection process; the lower cover 13 is used for sealing the lower port of the cylinder 1, and the power supply 12 is convenient to replace by adopting a clamping fixing mode; the second joint 14 is used for connecting a site to be detected and judging whether the site to be detected is electrified or not through whether the current sensor 17 responds or not under the action of the power supply 12; the pressing plate 15 and the bolt 16 are used for pressing and fixing the upper cover 6.

Example 2

The sensor for detecting the insulation of the power cable comprises a barrel 1, a shielding coil 2, a core rod 3, a through hole 4, a tube body 5, an upper cover 6, a lead 7, a first joint 8, a positioning plate 9, a clamping sheet 10, a mounting frame 11, a power supply 12, a lower cover 13, a second joint 14, a pressing plate 15, a bolt 16 and a current sensor 17, wherein the shielding coil 2 is arranged outside the barrel 1, the core rod 3 is arranged in the barrel 1, the core rod 3 is provided with the through hole 4 vertical to the axis of the core rod 3, the tube body 5 is inserted in the axis of the core rod 3, the tube body 5 is positioned above the through hole 4, the upper cover 6 is arranged at the top end of the barrel 1, the upper cover 6 is connected with two leads 7, the first joint 8 is arranged at the inner end of the lead 7, the bottom end of the barrel 1 is fixedly connected with the mounting frame 11, the positioning plate 9 is connected to the mounting frame 11, the first joint 8 is clamped on the positioning plate 9, the clamping sheet 10 is pressed against the first joint 8, the bottom end of the barrel 1 is provided with the power supply 12, the lower end of the barrel 1 is fixedly connected with the positioning plate 12, the second joint 13, the clamp plate 15 is electrically connected with the clamp plate 6 through the bolt 15, the lead 6, the clamp plate 15 is connected with the upper cover 17, and the clamp plate 15, the clamp plate 15 is electrically connected with the lead 6, and the clamp plate 15 is connected with the current sensor 17, the clamp plate 15. Meanwhile, the current sensor further comprises a buzzer 18, a connecting wire 19 and a wire clamp 20, wherein the connecting wire 19 is electrically connected with the buzzer 18, the wire clamp 20 is arranged at the tail end of the connecting wire 19, and the wire clamp 20 is connected with the output end of the current sensor 17. The bottom of upper cover 6 has the snap ring, the bottom of body 5 with the snap ring joint is fixed. An induction coil is arranged on the inner wall of the tube body 5. A communication port is formed in the lower cover 13, a thread is formed on the inner wall of the communication port, and a screw is screwed on the thread.

The embodiments of the present invention have been described in detail, but the description is only for the preferred embodiments of the present invention, and is not intended to limit the present invention. Any modification, equivalent replacement, and improvement made within the scope of the present invention should be included in the protection scope of the present invention.

Claims (5)

1. Sensor for detecting insulation of power cable, characterized by comprising a cylinder (1), a shielding coil (2), a core rod (3), a through hole (4), a tube body (5), an upper cover (6), a wire (7), a first joint (8), a positioning plate (9), a clamping sheet (10), a mounting frame (11), a power supply (12), a lower cover (13), a second joint (14), a pressing plate (15), a bolt (16), a current sensor (17), wherein the shielding coil (2) is arranged outside the cylinder (1), the core rod (3) is arranged in the cylinder (1), the through hole (4) which is vertical to the axis of the core rod (3) is arranged on the core rod (3), the tube body (5) is inserted in the axis of the core rod (3), the tube body (5) is arranged above the through hole (4), the upper cover (6) is arranged at the top end of the cylinder (1), two wires (7) are connected on the upper cover (6), the first joint (8) is arranged at the inner end of the wire (7), the mounting frame (11) is fixedly connected with the mounting frame (9), the first joint (8) is connected with the positioning plate (9), and the first joint (10) is clamped at the side end of the positioning plate (8), have power (12) in the bottom of barrel (1), at barrel (1) bottom, the position joint that is located power (12) below has lower cover (13), first joint (8) and power (12) electric connection, second joint (14) have in the outer end of wire (7), have clamp plate (15) on upper cover (6), clamp plate (15) pass through bolt (16) fastening connection, current sensor (17) are located upper cover (6), current sensor (17) and wire (7) electric connection.

2. A power cable insulation detection sensor according to claim 1, further comprising a buzzer (18), a connecting line (19), and a clamp (20), wherein the connecting line (19) is electrically connected to the buzzer (18), the clamp (20) is provided at an end of the connecting line (19), and the clamp (20) is connected to an output terminal of the current sensor (17).

3. The sensor for detecting insulation of a power cable according to claim 1, wherein a snap ring is provided at a bottom end of the upper cover (6), and a bottom end of the tube body (5) is snap-fitted and fixed to the snap ring.

4. A power cable insulation detection sensor according to claim 1, characterized in that an induction coil is provided on the inner wall of the tube body (5).

5. The sensor for detecting insulation of a power cable according to claim 1, wherein a communication port is opened in the lower cover (13), a screw thread is provided on an inner wall of the communication port, and a screw is screwed into the screw thread.

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