CN212342380U

CN212342380U - Zinc oxide arrester for direct current high voltage experiment test

Info

Publication number: CN212342380U
Application number: CN202021488317.1U
Authority: CN
Inventors: 由海龙; 裴旭东
Original assignee: GANSU ELECTRIC APPARATUS RESEARCH INSTITUTE
Current assignee: GANSU ELECTRIC APPARATUS RESEARCH INSTITUTE
Priority date: 2020-07-25
Filing date: 2020-07-25
Publication date: 2021-01-12
Anticipated expiration: 2030-07-25

Abstract

The utility model discloses a belong to lightning-arrest technical field, specifically be a zinc oxide arrester is used in test of direct current high voltage experiment, include: a housing assembly having a silicone rubber outer casing on an outer wall thereof; the mounting assembly comprises two end parts of the silicone rubber outer sleeve, and wiring nuts are mounted on the two end parts of the silicone rubber outer sleeve, and one end part of each wiring nut is connected with a wiring bolt; the other ends of the two wiring nuts are respectively and electrically connected with a positive electrode and a negative electrode; detection subassembly, including installing the inside dropout of binding bolt, dropout internally mounted has the expansion plate, expansion plate internal connection spring assembly, the electro-magnet is connected to spring assembly bottom, electro-magnet right side outer wall connection solenoid valve, solenoid valve electric connection wire, wire electric connection discharge counter, the utility model discloses, make things convenient for the reference of experimental data, can also play certain guard action to the device, increase the device's life, be fit for being widely used.

Description

Zinc oxide arrester for direct current high voltage experiment test

Technical Field

The utility model relates to a lightning-arrest technical field specifically is a zinc oxide arrester is used in test of direct current high voltage experiment.

Background

The high-voltage DC power supply is also called as DC high-voltage power supply, it is input by AC commercial power or three-phase power, the power of the output is hundreds of watts to thousands of watts, it can generally stabilize or stabilize the current, earlier DC high-voltage power supply is to boost the AC commercial power or three-phase power from the power frequency high-voltage transformer to AC high-voltage power, then commutate and filter to get the DC high-voltage power, because of the low frequency, the volume and weight of the power are bigger, the conversion efficiency and stability are bad, with the development and maturity of the switching power supply technology, the DC high-voltage power supply developed by adopting the high-frequency switching conversion technology and combining the characteristics of the high-voltage power supply becomes the mainstream, the arrester, it is used to protect the electrical equipment from the damage of high transient overvoltage and limit the follow current time and also limit the electric appliance of the follow current amplitude. Lightning arresters, another important device often used in communication cables to protect against lightning damage, are usually connected between the grid conductor and the earth, but sometimes also beside the electrical windings or between the conductors.

The existing zinc oxide arrester for testing the direct-current high-voltage experiment has the following defects: 1. the number of times the lightning rod is operated cannot be recorded during the experiment. 2. The protection measures for the zinc oxide nonlinear resistance card in the lightning rod are not enough.

SUMMERY OF THE UTILITY MODEL

This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and in the abstract of the specification and the title of the application to avoid obscuring the purpose of this section, the abstract of the specification and the title of the application, and such simplifications or omissions are not intended to limit the scope of the invention.

Therefore, the utility model aims at providing a direct current high voltage experiment test is with zinc oxide arrester can carry out the record to the action of lightning rod at every turn, makes things convenient for the reference of experimental data, can also play certain guard action to the device, increases the device's life.

For solving the technical problem, according to the utility model discloses an aspect, the utility model provides a following technical scheme:

the utility model provides a zinc oxide arrester is used in test of direct current high voltage experiment, includes: a housing assembly having a silicone rubber outer casing on an outer wall thereof; the mounting assembly comprises two end parts of the silicone rubber outer sleeve, and wiring nuts are mounted on the two end parts of the silicone rubber outer sleeve, and one end part of each wiring nut is connected with a wiring bolt; the other ends of the two wiring nuts are respectively and electrically connected with a positive electrode and a negative electrode; the detection assembly comprises a junction bolt, wherein the junction bolt is internally provided with a tripping plate, the inside of the tripping plate is connected with a spring set, the bottom of the spring set is connected with an electromagnet, the outer wall of the right side of the electromagnet is connected with an electromagnetic valve, the electromagnetic valve is electrically connected with a wire, and the wire is electrically connected with a discharge counter.

As a preferred scheme of a zinc oxide arrester for test of direct current high voltage experiment, wherein: the shell component further comprises a fiber composite net connected with the inner wall of the silicone rubber outer sleeve, and the inner wall of the fiber composite net is wrapped by the inner cavity.

As a preferred scheme of a zinc oxide arrester for test of direct current high voltage experiment, wherein: the resistor assembly further comprises a nonlinear resistor disc connected in series between the positive electrode and the negative electrode, and the nonlinear resistor disc is made of zinc oxide.

As a preferred scheme of a zinc oxide arrester for test of direct current high voltage experiment, wherein: the negative electrode is electrically connected with the wiring bolt, the bottom of the wiring bolt is fixedly connected with the electromagnet, and the wiring bolt is arranged under the electromagnet.

Compared with the prior art: 1. install the dropout on the terminal bolt of negative electrode bottom, when the electric current too big flows into on the terminal bolt under the negative pole, the electro-magnet magnetic force of connection in the terminal bolt bottom is greater than the elasticity of spring assembly, make the electro-magnet be connected with the terminal bolt of bottom, form closed circuit, with the leading-in underground of electric current, install the solenoid valve on the right side of electro-magnet, during the terminal bolt of electro-magnet and bottom, the electric current flows into in the wire after passing through the solenoid valve, flow into inside the counter that discharges again through the wire, the counter current circulation back pointer of discharging rotates one check, the action of lightning rod once of record.

2. The non-linear resistance chip is made of zinc oxide and needs to play a certain protection role on the non-linear resistance chips connected in series, the non-linear resistance chips are arranged in an inner cavity, the inner cavity forms a closed space to prevent external air and dust from entering and corroding the non-linear resistance chips, a fiber composite net is arranged on the outer wall of the inner cavity and is made of glass fiber reinforced composite materials, the fiber composite net has the advantages of light weight, corrosion resistance, slow heat transfer, good electrical insulation performance and good thermal insulation performance, can close the contact between the inner cavity and the outer wall and plays a certain protection role on the inner cavity, a silicon rubber jacket is arranged on the outer wall of the fiber composite net and has high and low temperature stability, inertia, wide hardness range, chemicals resistance, good sealing performance and compression deformation resistance, and can prevent the outside from generating chemical reaction with the silicon rubber jacket when the outside contacts, the corrosion silicon rubber outer sleeve not only has a protection effect on the inner cavity, but also can be used for a long time in a high-temperature environment, so that the service life of the lightning rod is prolonged.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the present invention will be described in detail with reference to the accompanying drawings and detailed embodiments, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor. Wherein:

FIG. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a sectional view of the present invention.

In the figure: 100. a housing assembly; 110. a silicon rubber jacket; 120. a fiber composite web; 130. an inner cavity; 200. mounting the component; 210. a wiring nut; 220. a wiring bolt; 300. a resistance component; 310. a positive electrode; 320. a negative electrode; 330. a non-linear resistor sheet; 400. a detection component; 410. tripping; 420. a retractable plate; 430. a spring set; 440. an electromagnet; 450. an electromagnetic valve; 460. a wire; 470. and a discharge counter.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be implemented in other ways than those specifically described herein, and one skilled in the art may similarly generalize the present invention without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.

Next, the present invention will be described in detail with reference to the schematic drawings, and in the detailed description of the embodiments of the present invention, for convenience of explanation, the sectional view showing the device structure will not be enlarged partially according to the general scale, and the schematic drawings are only examples, and should not limit the scope of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in the actual fabrication.

In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

The utility model provides a zinc oxide arrester is used in test of direct current high voltage experiment, include: a housing assembly 100 having a silicone rubber outer casing 110 on an outer wall thereof; the mounting assembly 200 comprises a silicon rubber casing 110, wherein both ends of the silicon rubber casing are provided with wiring nuts 210, and one end of each wiring nut 210 is connected with a wiring bolt 220; the other ends of the two wiring nuts 210 are respectively and electrically connected with the positive electrode 310 and the negative electrode 320 of the resistor component 300; the detection assembly 400 comprises a trip 410 installed inside the junction bolt 220, a telescopic plate 420 is installed inside the trip 410, a spring set 430 is connected inside the telescopic plate 420, the bottom of the spring set 430 is connected with an electromagnet 440, the outer wall of the right side of the electromagnet 440 is connected with an electromagnetic valve 450, the electromagnetic valve 450 is electrically connected with a lead 460, and the lead 460 is electrically connected with a discharge counter 470;

referring to fig. 1, the housing assembly 100 further includes a fiber composite web 120 connected to an inner wall of the silicone rubber outer casing 110, wherein an inner wall of the fiber composite web 120 encloses an inner cavity 130.

Specifically, install in inner chamber 130 at nonlinear resistance card 330, inner chamber 130 forms the enclosure space, prevents that outside air and dust from getting into, erodes to nonlinear resistance card 330, is provided with fibre composite mesh 120 on the outer wall of inner chamber 130, and the material of fibre composite mesh 120 is glass fiber reinforced composite, has light in weight, and is corrosion-resistant, and heat transfer is slow, and electrical insulation can be good, and thermal insulation can be good, can seal inner chamber 130 and external contact, plays certain guard action to inner chamber 130.

Referring to fig. 1, the resistor assembly 300 further includes a non-linear resistor sheet 330 connected in series between the positive electrode 310 and the negative electrode 320, and the non-linear resistor sheet 330 is made of zinc oxide.

Specifically, the current flows from the terminal bolt 220 into the positive electrode 310, flows from the positive electrode 310 into the non-linear resistance sheet 330, and flows from the non-linear resistance sheet 330 into the negative electrode 320.

Referring to fig. 1, the negative electrode 320 is electrically connected to the terminal bolt 220, the bottom of the terminal bolt 220 is fixedly connected to an electromagnet 440, and the terminal bolt 220 is installed under the electromagnet 440.

Specifically, the current-driven negative electrode 320 flows into the terminal bolt 220 and flows from the terminal bolt 220 to the electromagnet 440, so that the magnetic force of the electromagnet 440 is greater than the elastic force of the spring assembly 430, and the electromagnet 440 is connected with the terminal bolt 220 at the bottom to form a closed circuit.

In specific use, an operator connects the upper end of the binding bolt 220 with the binding nut 210 to the positive line, so that the bottom binding bolt 220 is connected with the binding nut 210 and the ground line, when the current flows from the top binding bolt 220 due to overlarge current, the top binding nut 210 flows into the positive electrode 310, the non-linear resistance sheet 330 is made of zinc oxide material and flows into the non-linear resistance sheet 330 from the positive electrode 310, when the current flows through the non-linear resistance sheet 330, the non-linear resistance sheet 330 is an insulator, the current flows into the insulator to form an open circuit, the current does not flow, when the current flows through the non-linear resistance sheet 330, the zinc oxide on the non-linear resistance sheet 330 is activated, the non-linear resistance sheet 330 becomes a conductor, the current is led into the negative electrode 320, the binding bolt 220 at the bottom of the negative electrode 320 is provided with the release 410, the electromagnet 440 connected at the bottom of the binding bolt 220 is larger than the elastic force of the spring, a closed circuit is formed, current is led to the ground, an electromagnetic valve 450 is installed on the right side of the electromagnet 440, when the electromagnet 440 and a wiring bolt 220 at the bottom, the current flows into a lead 460 after passing through the electromagnetic valve 450, then flows into the inside of a discharge counter 470 through the lead 460, a pointer rotates for one time after the current of the discharge counter 470 flows, the action of a lightning rod is recorded once, when the current does not flow onto the electromagnet 440, the elastic force of a spring group 430 is larger than the magnetic force of the electromagnet 440, the electromagnet 440 is not connected with the wiring bolt 220, the nonlinear resistance sheet 330 is made of zinc oxide, a certain protection effect needs to be performed on the nonlinear resistance sheets 330 connected in series, when the nonlinear resistance sheets 330 are installed in the inner cavity 130, the inner cavity 130 forms a closed space to prevent external air and dust from entering and corroding the nonlinear resistance sheets 330, and the fiber composite net 120 is arranged on the outer wall, the fiber composite net 120 is made of glass fiber reinforced composite material, and has the advantages of light weight, corrosion resistance, slow heat transfer, good electrical insulation performance and good thermal insulation performance, the contact between the inner cavity 130 and the outside can be sealed, and a certain protection effect on the inner cavity 130 is achieved.

While the invention has been described above with reference to an embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, as long as there is no structural conflict, the various features of the disclosed embodiments of the present invention can be used in any combination with each other, and the non-exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, it is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.

Claims

1. The utility model provides a zinc oxide arrester is used in test of direct current high voltage experiment which characterized in that includes:

a housing assembly (100) having a silicone rubber outer casing (110) on an outer wall thereof;

the mounting assembly (200) comprises two ends of the silicon rubber outer sleeve (110) which are provided with wiring nuts (210), and one end of each wiring nut (210) is connected with a wiring bolt (220);

the other ends of the two wiring nuts (210) are respectively and electrically connected with a positive electrode (310) and a negative electrode (320);

detection subassembly (400), including installing trip (410) inside binding bolt (220), trip (410) internally mounted has expansion plate (420), expansion plate (420) internal connection spring assembly (430), electro-magnet (440) is connected to spring assembly (430) bottom, electro-magnet (440) right side outer wall connection solenoid valve (450), solenoid valve (450) electric connection wire (460), wire (460) electric connection counter (470) that discharges.

2. The zinc oxide arrester for the direct-current high-voltage experimental test according to claim 1, wherein: the shell component (100) further comprises a fiber composite net (120) connected with the inner wall of the silicon rubber outer sleeve (110), and the inner wall of the fiber composite net (120) is wrapped with an inner cavity (130).

3. The zinc oxide arrester for the direct-current high-voltage experimental test according to claim 2, wherein: the resistor assembly (300) further comprises a nonlinear resistor disc (330) connected in series between the positive electrode (310) and the negative electrode (320), and the nonlinear resistor disc (330) is made of zinc oxide.

4. The zinc oxide arrester for the direct-current high-voltage experimental test according to claim 3, wherein: the negative electrode (320) is electrically connected with the wiring bolt (220), the bottom of the wiring bolt (220) is fixedly connected with the electromagnet (440), and the wiring bolt (220) is installed under the electromagnet (440).