CN116526401A - Composite insulator end wire clamp with pressure sensing device and use method thereof - Google Patents

Abstract

The invention relates to a composite insulator end wire clamp with a pressure sensing device, which comprises the following components: the wire clamp cover plate and the wire clamp body are fixed at the end head of the composite insulator; one end of the wire clamp cover plate is hinged with one end of the wire clamp body, a pin shaft is arranged at the other end of the wire clamp cover plate in a penetrating manner, the pin shaft is sleeved with one end of the movable joint bolt, the other end of the movable joint bolt is connected with the other end of the wire clamp body through a fastener, and the wire clamp cover plate and the wire clamp body are adjusted through the fastener to clamp an insulated wire; the flexible pressure sensor is fixedly arranged on the inner side wall of the wire clamp cover plate and the wire clamp body, which corresponds to the insulated wire part, and a rubber sheet is arranged on one side of the flexible pressure sensor, which is close to the insulated wire, and the shape of the rubber sheet is adapted to the shape of the insulated wire. Compared with the traditional double-bolt fixing mode, the wire clamp greatly reduces the construction workload of the distribution network, reduces the problem that the fastener is easy to lose and drop, and improves the reliability.

Description

Composite insulator terminal clamp with pressure sensing device and using method thereof

technical field

The invention relates to a composite insulator terminal clamp with a pressure sensing device and a method for using the same, and belongs to the technical field of matching fittings for distribution network lines.

Background technique

With the widespread use of overhead insulated wires, the existing composite insulator wire terminal clamp adopts a structure in which the insulated wire is fixed by pressing the compression piece with double bolts, which has the advantages of repeated unscrewing and screwing of the bolts, narrow and sharp compression pieces, and easy installation. There are many disadvantages such as deflected wires, and installation is difficult. More importantly, in coastal areas with strong winds, distribution network overhead lines are greatly affected by wind vibration. At present, the conductors on the straight poles of the overhead lines of the distribution network are usually fixed on the column insulators by binding wires or clamps. Due to the influence of wind load and conductor sag, the stress on the binding and fixing parts of the conductors is the largest. Under the action of wind for a long time, the wires are prone to breeze vibration, which will lead to mechanical fatigue at the fixed part of the wire binding, causing damage to the wires at this part, and will eventually evolve into a serious accident of disconnection, causing serious damage to the operation of the distribution line. Security risks.

Contents of the invention

In order to solve the above-mentioned problems in the prior art, the present invention proposes a composite insulator terminal clamp with a pressure sensing device and its use method.

Technical scheme of the present invention is as follows:

On the one hand, the present invention provides a composite insulator terminal clamp with a pressure sensing device, comprising: a clamp cover plate and a clamp body, and the clamp body is fixed to the end of the composite insulator;

One end of the clamp cover plate is hinged with one end of the clamp body, the other end of the clamp cover plate is pierced with a pin shaft, and the pin shaft is socketed with one end of the swing bolt, and the other end of the swing bolt is connected to the clamp body through a fastener. The other end of the clamp body is connected, and the clamp cover and the clamp body are adjusted by fasteners to clamp the insulated wire;

A flexible pressure sensor is fixedly installed on the inner side wall of the insulated conductor part of the clamp cover plate and the clamp body, and a rubber sheet is arranged on the side of the flexible pressure sensor close to the insulated conductor, and the shape of the rubber sheet is consistent with that of the insulated conductor. Adapt to the shape.

As a preferred embodiment, the cover plate of the cable clamp includes a cover plate chuck with a C-shaped cross section; one side of the cover plate clamp is provided with a hinge hole of the cover plate, which is used to hinge with the cable clamp body through a hinge pin, and the other side of the cover plate clamp The side extension is provided with a cover plate positioning boss, and the cover plate positioning boss is provided with a cover plate pin hole for piercing the pin shaft, and the outer periphery of the cover plate pin hole is provided with a cover plate riveting boss.

As a preferred embodiment, the clamp body includes a C-shaped body chuck; one side of the body chuck is provided with a body hinge hole for hinged connection with the wire clamp cover through a hinge pin, and the other side extends A body positioning groove is provided, and an opening for positioning the swing bolt is arranged on the body positioning groove.

As a preferred embodiment, a crimping tube is fixedly connected to the bottom of the body clamp, and the body clamp is crimped with the mandrel end of the composite insulator through the crimping tube.

As a preferred embodiment, the rubber sheet is fixedly provided with a number of positioning blocks, and the inner wall of the cable clamp cover plate and the cable clamp body corresponding to the insulated wire are provided with a number of positioning grooves for matching with the positioning blocks. Fix by matching the positioning block with the positioning groove.

As a preferred embodiment, the rubber sheet is provided with sensor pin grooves for accommodating lead wires connected to the pins of the flexible pressure sensor.

As a preferred embodiment, the flexible pressure sensor includes a thin film pressure sensor, a linear voltage conversion module, a processor and a power supply;

The thin-film pressure sensor is used to obtain the pressure electrical signal generated by the pressure between the clamp cover and/or the clamp body and the insulated wire;

The linear voltage conversion module is used to receive the pressure electrical signal generated by the thin-film pressure sensor, convert it into a voltage signal and output it to the processor;

the processor is configured to calculate pressure estimation data from the input voltage signal;

The power supply is used for power supply.

As a preferred embodiment, the flexible pressure sensor further includes a wireless transmission module, configured to transmit the pressure estimation data calculated by the processor to a corresponding signal receiving device through a wireless signal.

On the other hand, the present invention also provides a method for using the composite insulator terminal clamp with a pressure sensing device according to any embodiment of the present invention, including the following steps:

Open the clamp cover and put the insulated wire between the clamp cover and the clamp body;

Constantly adjust the positions of the fasteners and swing bolts to clamp the insulated wire between the clamp cover and the clamp body, and obtain the pressure estimation data between the clamp cover, the clamp body and the insulated wire through a flexible pressure sensor;

When the pressure estimation data reaches the set threshold value, the insulated wire is fastened in place, and the adjustment of the fastener and the swing bolt is stopped.

The present invention has following beneficial effect:

1. The present invention is a composite insulator terminal clamp with a pressure sensing device. The clamp has a reliable structure, convenient installation and strong versatility. Compared with the traditional double-bolt fixing method, it greatly reduces the distribution network The construction workload reduces the problem that fasteners are easily lost and dropped, and improves reliability. There is a flexible pressure sensor on the contact surface of the clamp. When the fixed clamp is tightened, the estimated value of the pressure exerted by the tightening of the wire can be monitored in real time. When the threshold is reached, the clamp is installed in place to prevent excessive extrusion of the wire and fasteners. The phenomenon of filaments improves the service life of insulated wires and clamps.

2. A composite insulator terminal clamp with a pressure sensing device of the present invention is covered with a rubber sheet on the flexible pressure sensor, and adopts a rubber material with strong weather resistance, which reduces the influence of the heat of the wire on the measured value of the sensor, and The contact part of the clamp body and the clamp cover and the insulated wire adopts a smooth and large arc transition, which reduces the possibility of damage to the insulating clamp and is more reliable in the coastal environment of high salt spray.

3. The terminal clamp of a composite insulator with a pressure sensing device of the present invention can quickly lock and fix the insulated wire by setting the fastener 7 and the swing bolt 6, eliminating the need to disassemble multiple bolts and nuts, and the installation is simple and convenient . At the same time, the adaptable range of the diameter of the insulated wire can be increased, and the versatility of the wire clip is improved.

Description of drawings

1 is a schematic diagram of the overall structure of a composite insulator terminal clamp in an embodiment of the present invention;

Fig. 2 is the front view of the terminal clamp of the composite insulator in the embodiment of the present invention;

Fig. 3 is a schematic structural view of the cable clip cover plate in the embodiment of the present invention;

Fig. 4 is a bottom view of the cable clamp cover plate in the embodiment of the present invention;

Fig. 5 is a schematic structural view of the cable clamp body in an embodiment of the present invention;

Fig. 6 is the structural representation of rubber sheet in the embodiment of the present invention;

Fig. 7 is the installation diagram of fastener in the embodiment of the present invention;

Fig. 8 is a schematic diagram of the principle of the flexible pressure sensor in the embodiment of the present invention.

The reference signs in the figure are:

1. Clamp cover; 2. Hinge pin; 3. Clamp body; 4. Rubber sheet; 5. Pin shaft; 6. Swivel bolt; 7. Fastener; 8. Flexible pressure sensor; 9. Insulated wire ; 10, composite insulator; 11, cover chuck; 111, cover hinge hole; 112, cover rubber positioning groove; 12, cover positioning boss; 121, cover pin hole; 122, cover riveting convex 31, body chuck; 311, body hinge hole; 312, body rubber positioning groove; 313, body riveting boss; 32, body positioning groove; 33, crimping tube; 41, arc groove; 42, positioning block; 43, the sensor pin groove.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

It should be understood that the step numbers used herein are only for convenience of description, and are not intended to limit the execution order of the steps.

It should be understood that the terminology used in the description of the present invention is for the purpose of describing particular embodiments only and is not intended to limit the present invention. As used in this specification and the appended claims, the singular forms "a", "an" and "the" are intended to include plural referents unless the context clearly dictates otherwise.

The terms "comprising" and "comprising" indicate the presence of described features, integers, steps, operations, elements and/or components, but do not exclude the presence of one or more other features, integers, steps, operations, elements, components and/or The presence or addition of its collection.

The term "and/or" refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

Embodiment one:

Referring to Fig. 1 and Fig. 2, this embodiment provides a composite insulator terminal clamp with a pressure sensing device, including: a clamp cover plate 1 and a clamp body 3, and the clamp body 3 is fixed to a composite insulator 10 end of

One end of the clamp cover 1 is hinged with one end of the clamp body 3 to form a clamp that can be opened and closed at the other end; The other end of the swing bolt 6 is connected to the other end of the clamp body 3 through the fastener 7, and the clamp cover 1 and the clamp body 3 are adjusted through the cooperation of the fastener 7 and the swing bolt 6 The size of the opening at the other end, while adjusting the relative position of the clamp cover 1 and the clamp body 3, to clamp and envelop the insulated wire 9 through the middle part of the clamp cover 1 and the clamp body 3;

A flexible pressure sensor 8 is fixedly arranged on the inner side wall of the clamp cover plate 1 and the clamp body 3 corresponding to the insulated wire 9, and a rubber sheet 4 is arranged on the side of the flexible pressure sensor 8 close to the insulated wire 9. The shape of the sheet 4 is adapted to the shape of the insulated wire 9, and the rubber sheet 4 is used to avoid the wear of the insulated wire 9, and at the same time reduce the influence of current heating, and conduct the pressure applied by the insulated wire 9 to the flexible pressure sensor 8; through the flexible pressure The sensor 8 monitors the pre-tightening force of the clamp in real time to prevent excessive extrusion and deformation of the insulated wire 9 caused by excessive pre-tightening force, and to avoid slippage of the fastener.

Referring specifically to Fig. 3 and Fig. 4, as a preferred implementation of this embodiment, the cable clamp cover 1 includes a cover clamp 11 with a C-shaped cross section; one side of the cover clamp 11 is provided with a cover hinge The hole 111 is used to hinge the clamp body 3 through the hinge pin 2, and the other side is extended with a cover plate positioning boss 12, and the cover plate positioning boss 12 is provided with a cover plate pin shaft for passing through the pin shaft 5 Hole 121, the outer periphery of cover plate pin hole 121 is provided with cover plate riveting boss 122, the pin shaft 5 that is sheathed with swing bolt 6 passes through cover plate pin hole 121, and then the cover plate riveting boss 122 is riveted Flat, pin shaft 5 is not slipped out, has avoided the trouble that dismounting bolt is easy to drop and lose.

Referring specifically to FIG. 5 , as a preferred implementation of this embodiment, the clamp body 3 includes a body clamp 31 with a C-shaped cross section; one side of the body clamp 31 is provided with a body hinge hole 311 for passing through The hinge pin 2 is hinged with the clamp cover 1 , and the other side is extended with a body positioning groove 32 , and the body positioning groove 32 is provided with an opening for positioning the swing bolt 6 . The hinge pin 2 passes through the hinge hole 111 of the cover plate and the hinge hole 311 of the body in sequence, and finally the riveting boss 313 of the body is riveted flat so that the hinge pin 3 does not slide out. Referring specifically to Fig. 7, the end of the swing bolt 6 sleeved on the pin shaft 5 is rotated into the opening on the positioning groove 32, and the end of the swing bolt 6 extending out of the opening away from the pin shaft 5 is arranged to be connected with the swing bolt 6. Fasteners 7 (fasteners can be nuts, etc.) threaded with joint bolts 6, tightening fasteners 7 and swing bolts 6 at the opening can quickly lock and fix insulated wires 9, eliminating the need to disassemble multiple bolts and nuts , Easy to install. At the same time, the range of diameter adaptation of the insulated wire 9 can be increased, and the versatility of the clamp can be improved.

As a preferred implementation of this embodiment, the contact parts of the clamp body 3 and the clamp cover 1 with the insulated wire 9 adopt a smooth large arc transition, which reduces the possibility of damage to the insulated clamp.

As a preferred implementation of this embodiment, the bottom of the main body chuck 31 is fixedly connected with a crimping tube 33, and the bottom end of the crimping tube 33 has a fixing groove adapted to the shape of the mandrel end of the composite insulator 10. The collet 31 is inserted into the mandrel end of the composite insulator 10 through the crimping tube 33 , and the clamp body and the composite insulator 10 are fixed by crimping.

Referring specifically to FIG. 6 , as a preferred implementation of this embodiment, an arc groove 41 matching the shape of the insulated wire 9 is formed on the surface of the rubber sheet 4 , and several positioning blocks 42 are fixedly arranged on the rubber sheet 4 . The inner side walls of the clamp cover plate 1 and the clamp body 3 corresponding to the insulated wire 9 are provided with a plurality of positioning grooves that cooperate with the positioning blocks 42, and the rubber sheet 4 is fixed by the positioning blocks 42 and the positioning grooves. The rubber sheet 4 cooperates respectively with the rubber positioning groove 112 of the cover plate and the rubber positioning groove 312 of the body through the positioning block 42, lightly covers the flexible pressure sensor 8, and wraps the insulated wire 98 through the arc groove 41 of the rubber sheet 4 to achieve real-time The purpose of monitoring the tightening pretightening force of the wire clamp is to protect the insulating layer of the insulated wire 9.

As a preferred implementation of this embodiment, the rubber sheet 4 is provided with a sensor pin slot 43 for accommodating a lead wire connected to the pin of the flexible pressure sensor 8 .

Referring specifically to FIG. 8, as a preferred implementation of this embodiment, the flexible pressure sensor 8 includes a thin-film pressure sensor, a linear voltage conversion module, a processor, and a power supply;

The thin-film pressure sensor is used to obtain the pressure electrical signal generated by the pressure between the clamp cover plate 1 and/or the clamp body 3 and the insulated wire 9;

The linear voltage conversion module is used to receive the pressure electrical signal generated by the thin-film pressure sensor, convert it into a voltage signal and output it to the processor;

the processor is configured to calculate pressure estimation data from the input voltage signal;

The power supply is used for power supply.

As a preferred implementation of this embodiment, the flexible pressure sensor 8 further includes a wireless transmission module, configured to transmit the pressure estimation data calculated by the processor to a corresponding signal receiving device through a wireless signal.

Embodiment two:

This embodiment provides a method for using a composite insulator terminal clamp with a pressure sensing device as described in any embodiment of the present invention, including the following steps:

Open the clamp cover 1, put the insulated wire 9 between the clamp cover 1 and the clamp body 3;

Constantly adjust the position of the fastener 7 and the swing bolt 6 so that the clamp cover 1 and the clamp body 3 clamp the insulated wire 9, and the clamp cover 1, the clamp body 3 and the insulated wire 9 are obtained by the flexible pressure sensor 8 The pressure estimation data between;

When the estimated pressure data reaches the set threshold, the insulated wire 9 is fastened and installed in place, and the adjustment of the fastener 7 and the hinged bolt 6 is stopped.

In the embodiments of the present application, "at least one" means one or more, and "multiple" means two or more. "And/or" describes the association relationship of associated objects, indicating that there may be three kinds of relationships, for example, A and/or B may indicate that A exists alone, A and B exist simultaneously, or B exists alone. Among them, A and B can be singular or plural. The character "/" generally indicates that the contextual objects are an "or" relationship. "At least one of the following" and similar expressions refer to any combination of these items, including any combination of single items or plural items. For example, at least one of a, b, and c can represent: a, b, c, a and b, a and c, b and c or a and b and c, where a, b, c can be single, or Can be multiple.

The above is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the description of the present invention and the contents of the accompanying drawings, or directly or indirectly used in other related technologies fields, are all included in the scope of patent protection of the present invention in the same way.

Claims (9)

1. The utility model provides a take pressure sensing device's composite insulator end fastener which characterized in that includes: the wire clamp cover plate (1) and the wire clamp body (3), wherein the wire clamp body (3) is fixed at the end head of the composite insulator (10);

one end of the wire clamp cover plate (1) is hinged with one end of the wire clamp body (3), a pin shaft (5) is arranged at the other end of the wire clamp cover plate (1) in a penetrating mode, the pin shaft (5) is sleeved with one end of the movable joint bolt (6), the other end of the movable joint bolt (6) is connected with the other end of the wire clamp body (3) through a fastener (7), and the wire clamp cover plate (1) and the wire clamp body (3) are adjusted through the fastener (7) to clamp an insulated wire (9);

the flexible pressure sensor (8) is fixedly arranged on the inner side wall of the wire clamp cover plate (1) corresponding to the insulated wire (9) and the wire clamp body (3), a rubber sheet (4) is arranged on one side, close to the insulated wire (9), of the flexible pressure sensor (8), and the shape of the rubber sheet (4) is matched with the shape of the insulated wire (9).

2. The composite insulator end clamp with pressure sensing device of claim 1, wherein:

the wire clamp cover plate (1) comprises a cover plate chuck (11) with a C-shaped section; cover plate hinge hole (111) have been seted up to apron chuck (11) one side for articulated with fastener body (3) through hinge pin (2), the opposite side extends and is provided with apron location boss (12), offer on apron location boss (12) and be used for wearing to establish apron round pin axle hole (121) of round pin axle (5), the periphery of apron round pin axle hole (121) is provided with apron riveting boss (122).

3. The composite insulator end clamp with pressure sensing device of claim 1, wherein:

the wire clamp body (3) comprises a body chuck (31) with a C-shaped section; one side of the body chuck (31) is provided with a body hinge hole (311) for being hinged with the wire clamp cover plate (1) through a hinge pin (2), the other side is provided with a body positioning groove (32) in an extending mode, and the body positioning groove (32) is provided with an opening for positioning the movable joint bolt (6).

4. A composite insulator termination clip with pressure sensing device as defined in claim 3, wherein:

the bottom of the body chuck (31) is fixedly connected with a crimping pipe (33), and the body chuck (31) is crimped with the core rod end of the composite insulator (10) through the crimping pipe (33).

5. The composite insulator end clamp with pressure sensing device of claim 1, wherein:

a plurality of positioning blocks (42) are fixedly arranged on the rubber sheet (4), a plurality of positioning grooves matched with the positioning blocks (42) are formed in the inner side walls of the positions, corresponding to the insulated wires (9), of the wire clamp cover plate (1) and the wire clamp body (3), and the rubber sheet (4) is fixedly matched with the positioning grooves through the positioning blocks (42).

6. The composite insulator end clamp with pressure sensing device of claim 1, wherein:

the rubber sheet (4) is provided with a sensor pin groove (43) for accommodating a lead connected with a pin of the flexible pressure sensor (8).

7. The composite insulator end clamp with pressure sensing device of claim 1, wherein:

the flexible pressure sensor (8) comprises a film type pressure sensor, a linear voltage conversion module, a processor and a power supply;

the film type pressure sensor is used for acquiring pressure electric signals generated by pressure between the wire clamp cover plate (1) and/or the wire clamp body (3) and the insulated wire (9);

the linear voltage conversion module is used for receiving the pressure electric signal generated by the film type pressure sensor, converting the pressure electric signal into a voltage signal and outputting the voltage signal to the processor;

the processor is used for calculating pressure estimation data through input voltage signals;

the power supply is used for supplying power.

8. The composite insulator end clamp with pressure sensing device of claim 7, wherein:

the flexible pressure sensor (8) further comprises a wireless transmission module, and the wireless transmission module is used for transmitting the pressure estimation data calculated by the processor to a corresponding signal receiving device through wireless signals.

9. A method of using the composite insulator end clip with pressure sensing device of any one of claims 1-8, comprising the steps of:

opening the wire clamp cover plate (1), and placing the insulated wire (9) between the wire clamp cover plate (1) and the wire clamp body (3);

continuously adjusting the positions of the fastener (7) and the movable joint bolt (6) to enable the wire clamp cover plate (1) and the wire clamp body (3) to clamp the insulated wire (9), and acquiring pressure estimation data between the wire clamp cover plate (1) and the wire clamp body (3) and the insulated wire (9) through the flexible pressure sensor (8);

when the pressure estimation data reach the set threshold value, the insulated wire (9) is fastened and installed in place, and the adjusting fastener (7) and the swing bolt (6) are stopped.