CN204792251U - an insulator - Google Patents

Abstract

The utility model discloses an insulator, which comprises: an insulator with a preset number of sheds; A cavity to accommodate the passage of the wire is provided between the second occlusal parts, and a conductive piercing tooth is provided on the inner wall of the cavity, and the conductive piercing tooth penetrates the insulating layer of the wire and electrically contacts the core of the wire; The high-voltage electrode; the grounding ring electrically connected with the high-voltage electrode; the lightning protection device electrically connected with the conductive piercing teeth. The insulator integrates the supporting insulator, the grounding ring and the lightning protection function, which is convenient for the maintenance personnel to hang the grounding wire and ensures safety; it avoids the line tripping and disconnection accidents caused by lightning strikes. Using acupuncture technology, it is not necessary to strip the insulation layer of the wire, avoiding damage and corrosion to the core of the insulated wire, ensuring the safe operation of the line, and making the construction and installation easier.

Description

an insulator

technical field

The utility model relates to the field of insulation controls, in particular to an insulator.

Background technique

In recent years, with the rapid development of China's economy, the demand for electricity from all walks of life has been increasing, and the requirements for power quality have also been continuously improved.

The urban landscape requires a certain amount of greening, and trees pose a threat to the safety of power distribution. Therefore, ensuring the complete operation of the distribution network has become the top priority of the work of power supply companies. The traditional bare aluminum overhead wires can no longer adapt to the power construction of modern cities, and are gradually replaced by overhead insulated wires. The insulated wires alleviate the line corridor and safety problems that bare wires are difficult to solve. However, it is extremely inconvenient to temporarily hang the insulated line to the ground during construction repair or maintenance. In addition, the overhead insulated conductor is often struck by lightning during operation, which causes line tripping and disconnection accidents. Under normal circumstances, it is necessary to install grounding rings on some sections of insulated wires. In order to ensure the safe operation of the line, a set of lightning arresters must be installed every few hundred meters on the insulated wires of the distribution line. When installing the grounding ring and lightning arrester, the grounding ring and the lightning arrester need to be in electrical contact with the core of the wire, which requires damage to the insulation layer of the wire. After the insulation layer of the wire is damaged, rainwater will enter the wire core and run along the core. It flows to the latitude point, which increases the weight of the wire, and the rain cannot be discharged. In winter, it will also cause ice in the wire core. The wire is affected by the temperature, and the wire shrinks in winter, and the latitude becomes tighter, causing the stress of the wire to increase at the insulation damage. If it is large, the wire may be broken, and the rain in the wire core will also cause corrosion of the wire core.

Therefore, how to realize the installation of grounding rings and lightning protection devices in the distribution network while reducing unnecessary breaks in insulated wires to improve the safety performance of the distribution network is a technical problem that those skilled in the art need to solve.

Utility model content

The purpose of the utility model is to provide an insulator, which can realize the installation of the grounding ring and the lightning protection device in the distribution network, and at the same time reduce unnecessary breaks in the insulated wires, so as to improve the safety performance of the distribution network.

In order to solve the above technical problems, the utility model provides the following technical solutions:

An insulator comprising:

an insulator with a predetermined number of sheds arranged on the insulator;

The occlusal portion provided at one end of the insulator, the occlusal portion includes a first occlusal portion and a second occlusal portion, a cavity is provided between the first occlusal portion and the second occlusal portion to accommodate the passage of wires, and the cavity Conductive piercing teeth are provided on the inner wall of the body, and the conductive piercing teeth penetrate the insulating layer of the wire and electrically contact the core of the wire;

a high-voltage electrode electrically connected to the conductive piercing teeth;

a grounding ring electrically connected to the high-voltage electrode;

A lightning protection device electrically connected to the conductive piercing teeth.

Preferably, the high-voltage electrode is electrically connected to the conductive piercing teeth of the first joint, and the lightning protection device is electrically connected to the conductive piercing teeth of the second joint.

Preferably, the engaging portion further includes: a torque nut that cooperates with the first engaging portion to control the piercing depth of the conductive piercing teeth.

Preferably, it further includes: a dish-shaped washer arranged between the torque nut and the first engaging portion to automatically adjust the piercing depth of the conductive piercing teeth.

Preferably, it also includes: a sealing layer arranged on the inner wall of the cavity to seal the puncture holes on the wires.

Preferably, it further includes: an insulating cover arranged on the high-voltage electrode.

Preferably, the lightning protection device is an arc-proof fitting, the arc-proof fitting is arc-shaped, one end of the arc-proof fitting is a wiring electrode, and the wiring electrode is electrically connected to the conductive piercing tooth, and the arc-proof fitting is The other end of the shielding electrode forms a discharge gap with the metal electrode at the lower end of the insulator.

Compared with the prior art, the above-mentioned technical solution has the following advantages:

The insulator provided by the embodiment of the utility model integrates the insulator, the grounding ring and the lightning protection device, so that the insulator in the utility model integrates the supporting insulator, the grounding ring and the lightning protection function, and has insulation performance. In addition to the function of fixing wires, it also has the functions of grounding ring and lightning protection. Due to the use of conductive piercing teeth, the grounding ring can be electrically connected to the core of the insulated wire, which is convenient for the maintenance personnel to hang the grounding wire on the grounding ring, ensuring the safety of the maintenance personnel; the lightning protection device can also be electrically connected to the core of the insulated wire , effectively avoiding the occurrence of line tripping and disconnection accidents caused by lightning strikes. Acupuncture technology is adopted, without stripping the insulation layer of the wire, which can effectively avoid damage to the insulation layer of the line insulated wire, thereby avoiding damage and corrosion to the core of the insulated wire, ensuring the safe operation of the line, and at the same time making Construction and installation are simpler.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are some embodiments of the present utility model. Those skilled in the art can also obtain other drawings based on these drawings without any creative work.

Fig. 1 is the schematic diagram of the insulator structure provided by one embodiment of the utility model;

Fig. 2 is the front view of the insulator provided in Fig. 1;

FIG. 3 is a side view of the insulator provided in FIG. 1 .

Detailed ways

The inventors have found that, at present, medium and low voltage lines in the distribution network are generally laid with overhead insulated wires, and when repairing lines or equipment, in order to ensure the safety of maintenance personnel, it is necessary to hang a short circuit after verifying that the line is dead. Grounding wire, which requires that the grounding wire clip and the wire must be in reliable contact when the grounding wire is hung, and the insulated wire cannot be hung, so an electrical inspection grounding ring is required; in addition, due to the inherently insufficient lightning resistance level of the insulated wire, it is difficult to withstand Due to direct lightning strike or induction lightning strike, the overhead frame without lightning protection measures will cause problems such as disconnection and porcelain insulator bursting when lightning strikes.

The core of the utility model is to provide an insulator, which can realize the installation of the grounding ring in the distribution network, reduce unnecessary breaches of insulated wires, and improve the safety performance of the distribution network.

In order to make the above purpose, features and advantages of the utility model more obvious and easy to understand, the specific implementation of the utility model will be described in detail below in conjunction with the accompanying drawings.

In the following description, specific details are set forth in order to provide a full understanding of the present invention. However, the utility model can be implemented in many other ways different from those described here, and those skilled in the art can make similar extensions without violating the connotation of the utility model. Therefore, the utility model is not limited by the specific embodiments disclosed below.

Please refer to Fig. 1, Fig. 2 and Fig. 3, Fig. 1 is a schematic diagram of the insulator structure provided by an embodiment of the present invention; Fig. 2 is a front view of the insulator provided in Fig. 1; Fig. 3 is a view of the insulator provided in Fig. 1 side view.

A specific embodiment of the present invention provides an insulator, comprising: an insulator 1, on which a preset number of sheds 11 are arranged; It includes a first occlusal portion 21 and a second occlusal portion 22, a cavity for the passage of wires is provided between the first occlusal portion 21 and the second occlusal portion 22, and conductive piercing teeth 23 are provided on the inner wall of the cavity , the conductive piercing tooth 23 penetrates the insulating layer of the wire and electrically contacts the core of the wire; a high-voltage electrode electrically connected to the conductive piercing tooth; a grounding ring 3 electrically connected to the high-voltage electrode; A lightning protection device 4 electrically connected to the conductive piercing teeth.

When installing, just separate the first snapping part from the second snapping part, let the wire pass through the cavity formed between the first snapping part and the second snapping part, between the first snapping part and the second snapping part There are several conductive piercing teeth on the inner wall of the formed cavity, and then the first occlusal part is buckled on the second occlusal part, so that the conductive puncture teeth penetrate the insulating layer of the wire, thereby contacting the wire core, realizing electrical connection and grounding The hanging ring is electrically connected to the conductive piercing teeth through the high-voltage electrodes, that is, electrically connected to the wire core of the wire, and the lightning protection device can also be electrically connected to the wire core of the wire through the conductive piercing teeth. When maintenance personnel need to repair equipment or lines, they only need to directly connect the grounding clamp to the grounding ring; when lightning strikes occur, the lightning protection device can protect the wires well, effectively avoiding the line damage caused by lightning strikes. The occurrence of tripping and disconnection accidents. Since the conductive piercing teeth are used to penetrate the insulation layer of the wire, that is, the acupuncture technology is adopted, it is not necessary to peel off the insulation layer of the wire, which can effectively avoid damage to the insulation layer of the line insulated wire, thereby avoiding damage to the core of the insulated wire. Damage and corrosion ensure the safe operation of the line and make the construction and installation easier.

It should be noted that, in this embodiment, the conductive puncture teeth are preferably made of red copper and embedded in the aluminum casting during casting. Other conductive piercing teeth are not limited in this embodiment, and it depends on the situation.

On the basis of the above-mentioned embodiments, in the insulator provided by an embodiment of the present invention, the high-voltage electrode is electrically connected to the conductive piercing teeth of the first joint part 21, and the lightning protection device 4 is connected to the conductive piercing teeth of the second joint part 22. Tooth electrical connection.

In this embodiment, the first joint and the second joint are detachably connected, the high-voltage electrode is electrically connected to the conductive piercing teeth of the first joint, that is, the grounding ring is electrically connected to the conductive piercing teeth of the first joint . In terms of appearance, the high-voltage electrode can be arranged inside the first joint, and then the grounding ring is physically connected to the first joint. And the lightning protection device is arranged on the second occlusal part. When the grounding ring or the lightning protection device fails, only the failed part on the insulator needs to be replaced, effectively saving resources.

On the basis of the above embodiments, in the insulator provided by an embodiment of the present invention, the occlusal part 2 further includes: a torque nut that cooperates with the first occlusal part 21 to control the puncture depth of the conductive puncture teeth 23 twenty four.

In this embodiment, the second occlusion is fixedly connected to the insulator, and a stud perpendicular to the upper surface of the second occlusion is respectively provided on both sides of the second occlusion, wherein the corresponding positions of the first occlusion are respectively provided with The through hole that can accommodate the stud is passed through the through hole of the first engaging part, and a cavity is formed between the first engaging part and the second engaging part. A torque nut is provided at the end of each stud away from the second occlusal part, and the torque nut plays the role of fixing the first occlusal part. At the same time, turning the torque nut will also change the pressure applied to the first occlusal part, thereby realizing control The purpose of the piercing depth of the conductive piercing teeth is to control the piercing strength of the conductive piercing teeth to ensure that the conductive piercing teeth can maintain good electrical connection with the wire core of the wire.

On the basis of the present embodiment, preferably, the insulator further includes: a disc-shaped washer disposed between the torque nut and the first engaging portion to automatically adjust the piercing depth of the conductive piercing teeth.

Usually, when the operator installs the insulator and adjusts the torque nut, he will not adjust the torque nut frequently. However, due to the influence of factors such as climate and temperature, the conductors and the parts in the insulator will have creep, thermal expansion and contraction, which will change the penetration depth of the conductive piercing teeth, which may cause grounding rings and conductors Poor contact of the wire core of the wire will cause danger during maintenance. The disc-shaped gasket will absorb part of the energy during installation, and can automatically adjust the puncture force of the teeth on the wire during operation, which solves the problems of thermal expansion and contraction and creep, thereby ensuring the conductive puncture teeth and the wire core of the wire Reliable electrical contact.

On the basis of any of the above-mentioned embodiments, the insulator provided by an embodiment of the present invention further includes: a sealing layer arranged on the inner wall of the cavity to seal the puncture holes on the wires.

Although the utility model adopts acupuncture technology to realize the electrical connection between the grounding ring and the wire core of the wire, without stripping the insulation layer of the wire, the conductive puncture teeth will still cause puncture holes, and a small amount of water vapor will still enter the wire For this purpose, a sealing layer is provided on the inner wall of the cavity in this embodiment, preferably the sealing layer is a grease layer, and the grease is covered around the conductive piercing teeth in the cavity, then during the process of the conductive piercing teeth piercing the wire, The insulating grease will slowly fill the puncture holes on the insulating layer of the wires to achieve the seal between the wires and the outside world, protect the wires, and prolong the service life of the wires.

The insulator provided by an embodiment of the present invention further includes: an insulating cover arranged on the high-voltage electrode.

An insulating cover is provided on the high-voltage electrode. After installation, the high-voltage electrode is covered to insulate, prevent leakage, and prevent water vapor from corroding the high-voltage electrode.

In the insulator provided by an embodiment of the present invention, preferably, the lightning protection device is an arc-proof fitting, the arc-proof fitting is arc-shaped, and one end of the arc-proof fitting is a wiring electrode, and the wiring electrode is connected to the conductive puncture The teeth are electrically connected, and the other end of the arc-proof fitting is a shielding electrode, and the shielding electrode forms a discharge gap with the metal electrode at the lower end of the insulator. An insulating cover is provided on the high-voltage electrode. After installation, the high-voltage electrode is covered to insulate, prevent leakage, and prevent water vapor from corroding the high-voltage electrode. A discharge gap is formed between the arc-proof fittings and the insulator, and the discharge gap has the effect of releasing the current of the atmospheric overvoltage, which can play a good role in lightning protection and protect the insulated wire.

To sum up, the insulator, the grounding ring and the lightning protection device are integrated, so that these single components are integrated into one component, which reduces the components on the line, reduces the cost of the line, and makes the construction and installation easier and more convenient. Simultaneously, the insulator in the utility model integrates the supporting insulator, the grounding ring and the lightning protection function, and has the functions of the grounding ring and lightning protection while having insulation performance and the function of fixing wires. Due to the use of conductive piercing teeth, the grounding ring can be electrically connected to the core of the insulated wire, which is convenient for the maintenance personnel to hang the grounding wire on the grounding ring for line maintenance, ensuring the safety of the maintenance personnel; the lightning protection device can also be electrically connected The core of the insulated wire can effectively avoid the occurrence of line tripping and disconnection accidents caused by lightning strikes. Acupuncture technology is adopted, without stripping the insulation layer of the wire, which can effectively avoid damage to the insulation layer of the line insulated wire, thereby avoiding damage and corrosion to the core of the insulated wire, ensuring the safe operation of the line, and at the same time In the construction process, the process of stripping the insulation layer of the wires is reduced, and the installation and construction time is shortened. The insulator provided by the utility model has good insulation performance and anti-pollution and anti-fog levels, and can be applied to 10kV overhead power lines.

In addition, the setting of the torque nut can control the puncture depth of the conductive puncture teeth; the dish gasket can automatically adjust the puncture force of the teeth on the wire during operation, which solves the problems of thermal expansion and contraction and creep. Therefore, reliable electrical contact between the conductive piercing tooth and the core of the wire is ensured.

Finally, the setting of the sealing layer can ensure the sealing between the wire and the outside world, protect the wire and prolong the service life of the wire.

The insulator provided by the utility model has been introduced in detail above. In this paper, specific examples are used to illustrate the principle and implementation of the present utility model, and the descriptions of the above embodiments are only used to help understand the core idea of the present utility model. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the utility model, some improvements and modifications can also be made to the utility model, and these improvements and modifications also fall into the protection of the claims of the utility model. within range.

Claims (7)

1. an insulator, is characterized in that, comprising:

Insulator, described insulator is provided with the full skirt of preset number;

Be arranged on the bite of described insulator one end, described bite comprises the first bite and the second bite, the cavity holding wire and pass through is provided with between described first bite and the second bite, the inwall of described cavity is provided with conduction puncture tooth, and described conduction puncture tooth penetrates the insulating barrier of described wire and the core of wire described in electrical contact;

With the described high-field electrode that tooth is electrically connected that punctures that conducts electricity;

The ground connection link be electrically connected with described high-field electrode;

With the described lightning arrester that tooth is electrically connected that punctures that conducts electricity.

2. insulator according to claim 1, is characterized in that, the conduction of described high-field electrode and the first bite tooth that punctures is electrically connected, and the conduction of described lightning arrester and the second bite tooth that punctures is electrically connected.

3. insulator according to claim 2, is characterized in that, described bite also comprises:

Coordinate with described first bite, control the torque nut of the paracentesis depth of described conduction puncture tooth.

4. insulator according to claim 3, is characterized in that, also comprises:

Be arranged between described torque nut and described first bite, automatically regulate the dish-shaped pad of the paracentesis depth of described conduction puncture tooth.

5. the insulator according to any one of Claims 1-4, is characterized in that, also comprises:

Be arranged on described cavity inner wall, the sealant of the puncturing hole on sealed guide.

6. insulator according to claim 5, is characterized in that, also comprises:

Be arranged on the insulating cover on described high-field electrode.

7. insulator according to claim 6, it is characterized in that, described lightning arrester is arc-preventing metal utensil, described arc-preventing metal utensil is curved, one end of described arc-preventing metal utensil is link electrode, described link electrode and the described tooth that punctures of conducting electricity are electrically connected, and the other end of described arc-preventing metal utensil is bucking electrode, and the metal electrode of described bucking electrode and insulator lower end forms discharging gap.