CN108417455A - The potting breaker of 220kV single phase operations - Google Patents

Abstract

The invention discloses a kind of potting breakers of 220kV single phase operations, it is characterized in that, including arc-chutes, the outside of arc-chutes is equipped with shell, arc-chutes are connect by conductor with entry/exit line is crossed, shell forms seal, arc-chutes, conductor are set in seal by shell and the casing connection of transferring between shell, switching shell, casing.Structure of the invention is rationally, assembly is simple, performance is stablized, and solves the disadvantage that current all types of potting breakers are complicated, operating work is big, assembly is difficult.

Description

220kV single-phase tank circuit breaker

technical field

The invention relates to a 220kV single-phase tank circuit breaker, which is widely used in various forms of substations. In the power system, it is mainly used for the control and protection of power equipment and transmission lines, and belongs to the technical field of high-voltage switches.

Background technique

At present, there are various forms of 220kV tank circuit breakers at home and abroad, but most of them have complex structures. The shell adopts a casting type, and the shape is complicated and the cost is high. The large resistance during operation leads to large operating power required by the mechanism, and a hydraulic operating mechanism is required, which is costly. Oil leakage from the hydraulic operating mechanism often occurs during the operation of the product, causing quality problems to the normal operation of the product.

Contents of the invention

The technical problem to be solved by the present invention is: to provide a 220kV single-phase tank circuit breaker with reasonable structure, simple assembly and stable performance, which solves the problem of complex structure of 220kV tank circuit breakers at home and abroad, large resistance during operation, and difficult assembly. Difficult question.

In order to solve the above technical problems, the technical solution of the present invention is to provide a tank circuit breaker with 220kV single-phase operation, which is characterized in that it includes an arc extinguishing chamber, and the outer side of the arc extinguishing chamber is provided with a housing, and the arc extinguishing chamber passes through the conductor It is connected with the incoming/outgoing line, and the shell is connected with the bushing through the transition shell. The shell, the transition shell, and the bushing form a sealed body, and the arc extinguishing chamber and the conductor are all set in the sealed body.

Preferably, the arc extinguishing chamber is a single-break or multi-break arc extinguishing chamber.

Preferably, the arc extinguishing chamber and the casing are both arranged on the bracket.

Preferably, the shell is rolled from a whole plate, and the seams are welded.

Preferably, the angle formed between the two ends of the transition housing is 110°-170°.

Preferably, the inside of the sealing body is filled with an insulating medium with a rated gauge pressure.

Preferably, the rated gauge pressure is 0.1-0.8 MPa.

Preferably, the arc extinguishing chamber is composed of a moving side and a static side, the moving side is connected to one end of the crank arm, the other end of the crank arm is connected to one end of a pull rod, and the other end of the pull rod is connected to drive the arc extinguishing chamber to complete opening and closing in the horizontal direction. The operating mechanism of the gate operation is connected, and the static side is connected to the conductor.

The invention has reasonable structure and simple assembly, and the casing adopts a welding forming process, and the processing is simple and the cost is low. The operation resistance is small, and it can be equipped with a spring operating mechanism, with stable performance and low cost. It solves the shortcomings of various types of tank circuit breakers such as complex structure, large operating power and difficult assembly.

Description of drawings

Figure 1 is a front view of a 220kV single-phase tank circuit breaker;

Fig. 2 is a sectional view of a 220kV single-phase tank circuit breaker.

Detailed ways

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

The present invention is a 220kV single-phase tank circuit breaker, as shown in Figure 1 and Figure 2, which consists of an arc extinguishing chamber 5, a housing 4, an operating mechanism 7, a bracket 6, a conductor 3, a crank arm 9, and a pull rod 8. It is formed by connecting the adapter housing 2 and the bushing 1. The outer side of the arc extinguishing chamber 5 is provided with a housing 4, the arc extinguishing chamber 5 and the housing 4 are installed on the bracket 6, the arc extinguishing chamber 5 is connected to the incoming/outgoing line through the conductor 3, and the bushing 1 is connected to the Housing 4 is connected. A sealed body is formed between the housing 4, the adapter housing 2, and the bushing 1, and the arc extinguishing chamber 5 and the conductor 3 are all arranged in the sealing body, that is, the arc extinguishing chamber 5 and the conductor 3 are sealed and installed on the housing 4 and the adapter housing Body 2, casing 1.

The angle α formed between the two ends of the adapter housing 2 is 110°-170°, that is, the angle between the bushing 1 and the horizontal direction is 20°-80°. The inside of the sealing body is filled with an insulating medium with a rated gauge pressure, and the rated gauge pressure is 0.1-0.8MPa.

The arc extinguishing chamber 5 is composed of a moving side and a static side, the moving side is connected to one end of the crank arm 9, the other end of the crank arm 9 is connected to one end of the pull rod 8, the other end of the pull rod 8 is connected to the operating mechanism 7, and the operating mechanism 7 drives the arc extinguishing chamber 5 Complete the opening and closing operations in the horizontal direction; the static side is connected to conductor 3. The arc extinguishing chamber 5 is a single-break or multi-break arc extinguishing chamber. The shell 4 is rolled from a whole plate, and the seams are welded, so the structure is simple and the processing is easy.

Principle of work of the present invention and working process thereof are as follows:

Circuit breaker closing operation:

When the circuit breaker receives the closing command, the compression of the closing spring of the operating mechanism 7 is released and converted into kinetic energy. The lever arm of the mechanism drives the lever 8 to move to the left, and the lever 8 pushes the lever arm 9 to move to the left. 5 is composed of a moving side and a static side, and the moving side is in contact with the static side in the arc extinguishing chamber 5 under the leftward movement thrust of the crank arm 9 to complete the closing operation of the circuit breaker. When the circuit breaker is running, the system current flows from one side into/out of the line through the conductor in the bushing 1, conductor 3, the arc extinguishing chamber 5 in the closed state, conductor 3, and the conductor in the bushing 1 to the other side into/out of the line .

Circuit breaker opening operation:

When the circuit breaker receives the opening command, the compression of the opening spring of the operating mechanism 7 is released and converted into kinetic energy. The lever 8 of the mechanism drives the lever 8 to move to the right, and the lever 8 pulls the lever 9 to move to the right. 5 is composed of a dynamic side and a static side, and the dynamic side is separated from the static side in the arc extinguishing chamber 5 under the pulling force of the rightward movement of the crank arm 9 to complete the opening operation of the circuit breaker. Since the circuit breaker is opened, the current carried by the circuit breaker during operation is separated from the moving side and the static side of the arc extinguishing chamber 5, so that the system current does not flow between the incoming/outgoing lines on both sides, which serves the purpose of disconnecting the power grid.

Claims (8)

1. A tank-type circuit breaker for 220kV single-phase operation, characterized in that it includes an arc extinguishing chamber (5), the outer side of the arc extinguishing chamber (5) is provided with a housing (4), and the arc extinguishing chamber (5) passes through the conductor (3) Connected to the incoming/outgoing line, the housing (4) is connected to the sleeve (1) through the adapter housing (2), the housing (4), the adapter housing (2), and the sleeve (1) A sealed body is formed between them, and the arc extinguishing chamber (5) and the conductor (3) are all arranged in the sealed body. 2. A 220kV single-phase tank circuit breaker according to claim 1, characterized in that the arc extinguishing chamber (5) is a single-break or multi-break arc extinguishing chamber. 3. A 220kV single-phase tank circuit breaker according to claim 1, characterized in that, the arc extinguishing chamber (5) and the casing (4) are both arranged on the bracket (6). 4. A tank circuit breaker with 220kV single-phase operation according to claim 1, characterized in that, the housing (4) is rolled from a whole plate, and the seams are welded. 5. A tank circuit breaker with 220kV single-phase operation according to claim 1, characterized in that, the angle formed between the two ends of the transition housing (2) is 110°-170°. 6. A 220kV single-phase tank circuit breaker as claimed in claim 1, characterized in that said sealing body is filled with an insulating medium of rated gauge pressure. 7. A 220kV single-phase tank circuit breaker according to claim 6, characterized in that said rated gauge pressure is 0.1-0.8 MPa. 8. A tank-type circuit breaker with 220kV single-phase operation according to claim 1, characterized in that, the arc extinguishing chamber (5) is composed of a moving side and a static side, and the moving side and the crank arm (9) One end is connected, the other end of the crank arm (9) is connected to one end of the pull rod (8), and the other end of the pull rod (8) is connected to the operating mechanism (7) that drives the arc extinguishing chamber (5) to complete the opening and closing operations in the horizontal direction. The static side is connected to the conductor (3).