CN106936089A - Environment protection type high pressure switchgear - Google Patents

Abstract

The invention discloses an environment-friendly high-voltage switchgear, which comprises a cabinet body. The cabinet body is composed of a low-voltage instrument room, a circuit breaker handcart room, a high-voltage bus room, a high-voltage cable room, and a small bus room. Metal partitions are used between the rooms Completely closed, the handcart room of the circuit breaker is equipped with a handcart circuit breaker, the high-voltage bus room is equipped with an upper contact box, and the high-voltage cable room is equipped with a lower contact box, current transformer, and grounding switch. The device is respectively connected with the static contacts in the upper contact box and the lower contact box, and the static contacts in the upper contact box are connected with the main busbar through the upper lead busbar, and the main busbar is arranged in the wall bushing, and the The wall bushing passes through and is fixed on the cabinet body, the static contact in the lower contact box is connected to the current transformer through the lower busbar, and the current transformer is connected to the grounding switch. All insulating parts of the present invention are made of PA66+glass fiber, which is used to replace traditional epoxy resin insulating parts, and fully meets the electrical performance of high-voltage switchgear.

Description

Environmentally friendly high-voltage switchgear

technical field

The invention relates to an environment-friendly high-voltage switchgear, which belongs to the field of electric equipment.

Background technique

In the power transmission and transformation system, the switchgear is an important part, which realizes the transmission and distribution of electric energy. Epoxy resin insulation products have long been used for switchgear insulation. The waste generated in the production process of epoxy resin will change the pH of water and soil; epoxy resin casting insulation products become "stubborn" garbage of nature because epoxy resin cannot be degraded after they are scrapped. If the epoxy resin is burned, a large amount of carcinogens will be produced, which will endanger human health and pollute the environment. At the same time, epoxy resin cast insulation products generally adopt vacuum casting molding technology, and the pretreatment, mixing, pouring and curing conditions of raw materials must be strictly controlled to avoid air gaps and bubbles inside and on the surface of the product, reduce internal stress, and prevent cracks etc. The processing technology is complex, the processing cycle is long, and the cost is high. With the increasing environmental pollution, it has become the responsibility of enterprises to promote the development of green and low-carbon cycles, and it has become an urgent task for the competitiveness of enterprises made in China!

Contents of the invention

The technical problem to be solved by the present invention is: to provide an environment-friendly high-voltage switchgear with simple production and processing process, no environmental pollution, good electrical performance, and recyclable reuse, which solves the problem of high-voltage switchgear product insulating parts being affected by epoxy resin materials. dependency problem.

In order to solve the above technical problems, the technical solution of the present invention is to provide an environment-friendly high-voltage switchgear, including a cabinet body, which consists of a low-voltage instrument room, a circuit breaker handcart room, a high-voltage bus room, a high-voltage cable room, and a small bus room. Each room is completely closed with a metal partition, and it is characterized in that a handcart circuit breaker is provided in the handcart room of the circuit breaker, an upper contact box is provided in the high-voltage bus room, and a lower contact box is provided in the high-voltage cable room. The head box, current transformer, grounding switch, and handcart circuit breaker are respectively connected to the static contacts in the upper contact box and the lower contact box, and the static contacts in the upper contact box are connected to the main busbar through the upper lead busbar row connection, the main busbar is set in the wall bushing, the wall bushing passes through and is fixed on the cabinet, the static contact in the lower contact box is connected to the current transformer through the lower busbar, and the current transformer is connected to the ground switch.

Preferably, the handcart circuit breaker is provided with a fixed pole, and the grounding switch is provided with an insulator.

Preferably, the upper contact box, the lower contact box, the solid-sealed pole of the handcart circuit breaker, the insulator of the grounding switch, and the wall bushing are all made of PA66+glass fiber.

Preferably, air insulation is used for phase-to-phase and ground-to-ground insulation of the main busbars, up-lead busbars, and down-lead busbars.

Preferably, the upper contact box, the lower contact box and the wall bushing are all fixed on the cabinet body.

Preferably, the metal partition includes a partition between the handcart compartment of the circuit breaker and the high-voltage busbar compartment, and the upper contact box and the lower contact box are respectively fixed on the partition of the handcart compartment.

All insulating parts materials of the present invention (that is, contact box, wall bushing, solid-sealed pole of handcart circuit breaker, insulator of grounding switch) all adopt PA66+glass fiber (reinforced nylon 66), which is used to replace traditional Epoxy resin insulators, phase-to-phase and ground-to-ground insulation methods adopt air insulation, do not use any composite insulation materials, fully meet the electrical performance of high-voltage switchgear, its production and processing process is simple, no environmental pollution, good electrical performance, and can be recycled and reused .

Description of drawings

Figure 1-1 is a schematic diagram of the cabinet structure of an environmentally friendly high-voltage switchgear;

Figure 1-2 is a sectional view of A-A in Figure 1-1;

Figure 2-1 is a layout diagram of the main components of an environment-friendly high-voltage switchgear;

Figure 2-2 is the left view of Figure 2-1;

Fig. 3 is a B-B sectional view of Fig. 2-1.

detailed description

In order to make the present invention more comprehensible, preferred embodiments are described in detail below with accompanying drawings.

The present invention is an environment-friendly high-voltage switchgear used in the field of power transmission and distribution. As shown in Figure 1-1 and Figure 1-2, the cabinet consists of a low-voltage instrument room II, a circuit breaker handcart room III, and a high-voltage bus room IV , High-voltage cable room V, and small busbar room I, and the rooms are completely closed with metal partitions.

As shown in Figure 2-1, Figure 2-2, and Figure 3, there is a handcart circuit breaker 3 in the handcart room III of the circuit breaker, an upper contact box 1 in the high-voltage bus room IV, and a high-voltage cable room V There is a lower contact box 2, a current transformer 4, and a grounding switch 5. The handcart circuit breaker 3 is connected to the static contacts in the upper contact box 1 and the lower contact box 2 respectively. The static contact is connected with the main busbar 9 through the upper lead busbar 7, the main busbar 9 is arranged in the wall bushing 6, the wall bushing 6 passes through and is fixed on the cabinet, the lower contact box 2 The static contact is connected to the current transformer 4 through the down bus 8, and the current transformer 4 is connected to the grounding switch 5. The upper contact box 1, the lower contact box 2 and the wall bushing 6 are all fixed on the cabinet body. The metal partition includes a partition between the handcart compartment III of the circuit breaker and the high-voltage bus compartment IV, and the upper contact box 1 and the lower contact box 2 are respectively fixed on the partition of the handcart compartment.

The phase-to-phase and ground-to-ground insulation methods of the main busbar 9, upper-lead busbar 7, and lower-lead busbar 8 in the cabinet are all air-insulated.

The handcart circuit breaker 3 is respectively connected with the static contacts in the upper contact box 1 and the lower contact box 2 installed on the partition of the handcart room. The static contact in the upper contact box 1 is connected to the upper lead bus bar 7 installed in the high voltage bus room IV, and the upper lead bus bar 7 is connected to the main bus bar 9 installed in the high voltage bus room IV, and the main bus bar 9 passes through Through the wall bushing 6, the combination of the power supply systems of multiple switchgears is realized. The wall bushing 6 passes through the side plate of the cabinet body and is fixed on the side plate of the high-voltage bus room IV. The lower contact box 2 is connected to the lower busbar 8 through the internal static contact, the lower busbar 8 is connected to the current transformer 4 , and the current transformer 4 is connected to the grounding switch 5 . The handcart circuit breaker 3 is provided with solid-sealed poles, and the grounding switch 5 is provided with insulators.

The upper contact box 1, the lower contact box 2, the solid-sealed pole of the handcart circuit breaker 3, the insulator of the grounding switch 5, and the wall bushing 6 are all made of environmentally friendly insulating materials, namely PA66+glass fiber (reinforced nylon 66) .

In this embodiment, the overall shape of the present invention is: a width of 650mm, a height of 2300mm, and a depth of 1500mm.

The distance between the upper contact box 1, the lower contact box 2, and the handcart circuit breaker 3 of the present invention is designed to be 150mm between the switchgears. The phase distance between the upper lead busbar 7 and the lower lead busbar 8 coming out of the upper contact box 1 and the lower contact box 2 is designed to be 170mm. The phase-to-phase distance between the current transformer 4 and the grounding switch 5 is designed to be 170mm. The phase-to-phase and ground-to-ground insulation methods of the present invention adopt air insulation without any composite insulating material, fully satisfy the electrical performance of the high-voltage switchgear, and realize the application of the environment-friendly insulating material in the high-voltage switchgear industry.

Claims (6)

1. An environment-friendly high-voltage switchgear, including a cabinet, which consists of a low-voltage instrument room (II), a circuit breaker handcart room (III), a high-voltage bus room (IV), a high-voltage cable room (V), and a small bus room (I) Composition, each room is completely closed with a metal partition, it is characterized in that a handcart type circuit breaker (3) is provided in the circuit breaker handcart room (III), and a handcart type circuit breaker (3) is provided in the high-voltage busbar room (IV). There is an upper contact box (1), a lower contact box (2), a current transformer (4), and a grounding switch (5) are installed in the high-voltage cable room (V), and the handcart circuit breaker (3) is connected with The upper contact box (1) is connected to the static contacts in the lower contact box (2), and the static contacts in the upper contact box (1) are connected to the main busbar (9) through the upper lead busbar (7) , the main busbar (9) is set in the wall bushing (6), the wall bushing (6) passes through and is fixed on the cabinet body, the static contact in the lower contact box (2) passes through the lower busbar (8) is connected with the current transformer (4), and the current transformer (4) is connected with the grounding switch (5). 2. An environment-friendly high-voltage switchgear according to claim 1, characterized in that the handcart circuit breaker (3) is provided with a solid-sealed pole, and the grounding switch (5) is provided with an insulator. 3. An environment-friendly high-voltage switchgear as claimed in claim 2, characterized in that, the solid parts of the upper contact box (1), the lower contact box (2), and the handcart circuit breaker (3) The pole sealing post, the insulator of the grounding switch (5), and the wall bushing (6) all adopt PA66+glass fiber. 4. An environment-friendly high-voltage switchgear as claimed in claim 2, characterized in that the phases and pairs of the main busbar (9), the upper lead busbar (7), and the lower lead busbar (8) The ground insulation method adopts air insulation. 5. An environment-friendly high-voltage switchgear according to claim 1, characterized in that, the upper contact box (1), the lower contact box (2) and the wall bushing (6) are fixed on on the cabinet. 6. A kind of environment-friendly high-voltage switchgear as claimed in claim 1 or 5, characterized in that, the metal partition includes a handcart compartment (III) and a high-voltage busbar compartment (IV) between the circuit breaker. The car compartment partition, the upper contact box (1) and the lower contact box (2) are respectively fixed on the handcart compartment partition.