Small integrated manual bypass control cabinet

Abstract

The present invention is a small integrated manual bypass control cabinet. The bypass system is located on the front right side and the rear side of the control cabinet. Among them, the disconnector operation room is installed on the front right side of the control cabinet, and there are two upper and lower disconnector operating mechanisms installed. The first disconnector, the second disconnector, the input sensor, the disconnector static contact assembly, etc. are installed on the front and rear sides of the control cabinet. The structure of this one-to-one manual bypass control cabinet for high-voltage inverters adopts an integrated control system and a primary bypass switching system. On the premise of meeting the bypass switching function, it has the function of controlling and detecting high-voltage inverters. The control cabinet of the present invention has a simple and compact structure, few components, small volume, and is convenient for installation and maintenance.

Description

Technical Field

[0001] The present invention relates to the technical field of power equipment, and particularly to a small integrated manual bypass control cabinet. Background Art

[0002] High-voltage inverters are one of the main technical means for speed control of high-voltage high-power motors at the present stage. In the case of inverter failures, maintenance, etc., the equipment can be switched from the frequency conversion operation state to the power frequency state through a manual bypass cabinet to ensure the continuous operation of the motor, etc. However, most of the currently used manual bypass systems are independent manual bypass cabinets, which are large in size and occupy space. Especially for frequency conversion transformation projects, the installation space is limited. A mechanical interlock needs to be satisfied between the primary power frequency / frequency conversion circuits of the manual bypass switch cabinet, and a wheel operation structure or a connecting rod mechanism needs to be configured, which is cumbersome to install, complex to operate, and at the same time, due to many components, large volume, poor cable laying processability, complex operation and maintenance, the price cost is high. Summary of the Invention

[0003] In order to solve the above problems, the present invention provides a small integrated manual bypass control cabinet, and its technical solution is as follows:

[0004] It includes a control cabinet body. Inside the control cabinet body, there are a bypass system, an isolating switch operation chamber and a control room. In the front of the control cabinet body are the isolating switch operation chamber and the control room respectively, and in the back of the control cabinet body is the bypass system;

[0005] An isolating switch installation beam and a side installation beam are longitudinally installed inside the control cabinet body. The first isolating switch and the second isolating switch are respectively fixed on the isolating switch installation beam; the isolating switch static contact assembly mounting plate, the input sensor mounting plate and the output insulator mounting plate are respectively fixed on the side mounting vertical beams;

[0006] There are two isolating switch operating mechanisms, upper and lower, in the isolating switch operation chamber. The isolating switch operating mechanism (5.1) controls the first isolating switch to open and close, and the isolating switch operating mechanism (5.2) controls the second isolating switch to open and close;

[0007] The isolating switch static contact assembly is fixed on the isolating switch static contact assembly mounting plate; the input sensor is installed on the input sensor mounting plate, and the input sensor connection row is connected to the input sensor; the output insulator is fixed on the output insulator mounting plate, and the output insulator connection row is connected to the output insulator;

[0008] The static contact assembly of the disconnecting switch is connected to the upper end of the second disconnecting switch through a 10 kV silicone rubber cable; one end of the input sensor connection row is connected to the upper end of the second disconnecting switch through a 10 kV silicone rubber cable, and the other end is connected to the incoming high-voltage cable; the lower end of the output insulator connection row is connected to the outgoing high-voltage cable, and the upper end of the output insulator connection row is connected to the lower end of the first disconnecting switch through a 10 kV silicone rubber cable.

[0009] Further, when the first disconnecting switch and the second disconnecting switch are in the closed state, the primary system loop is in the variable-frequency state; when the first disconnecting switch and the second disconnecting switch are in the open state, the moving contact of the first disconnecting switch is connected to the static contact assembly of the disconnecting switch, and the primary system loop is in the power-frequency state.

[0010] Further, the primary system loop is composed of the first disconnecting switch, the second disconnecting switch and the static contact assembly of the disconnecting switch.

[0011] The beneficial effects of the present invention are as follows: The present invention is a small integrated manual bypass control cabinet, and the bypass system is located on the front right side and the rear side of the control cabinet. Among them, the disconnecting switch operation room is installed on the front right side of the control cabinet, and there are two upper and lower disconnecting switch operating mechanisms installed. The first disconnecting switch, the second disconnecting switch, the input sensor, the static contact assembly of the disconnecting switch, etc. are installed on the front and rear sides of the control cabinet; the structure of this high-voltage inverter one-to-one manual bypass control cabinet adopts an integrated control system and a primary bypass switching system. On the premise of meeting the bypass switching function, it has the high-voltage inverter control and detection function. The control cabinet of the present invention has a simple and compact structure, few components, small volume, and is convenient for installation and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is the front structure schematic diagram of the present invention;

[0013] Figure 2 is the front internal structure schematic diagram of the present invention;

[0014] Figure 3 is the side structure schematic diagram of the present invention;

[0015] Figure 4 is the back structure schematic diagram of the present invention;

[0016] Figure 5 is the schematic diagram of the manual switching bypass primary of the present invention;

[0017] As shown in the figure, there are bypass system (1), control system (2), disconnector operating room (3), control room (4), disconnector operating mechanisms (5.1, 5.2), side-mounted vertical beams (6.1, 6.2), disconnector mounting beam (7), first disconnector (8), second disconnector (9), input sensor mounting plate (10), input sensor (11), input sensor connection row (12), disconnector static contact assembly (13), disconnector static contact assembly mounting plate (14), output insulator mounting plate (15), output insulator (16), output insulator connection row (17), incoming high-voltage cable (18), outgoing high-voltage cable (19), 10 kV silicone rubber cables (20.1, 20.2, 20.3). Detailed implementation mode

[0018] As shown in the figure, the present invention is a small integrated manual bypass control cabinet, including bypass system 1, control system 2, disconnector operating room 3, control room 4, disconnector operating mechanisms 5.1, 5.2, side-mounted vertical beams 6.1, 6.2, disconnector mounting beam 7, first disconnector 8, second disconnector 9, input sensor mounting plate 10, input sensor 11, input sensor connection row 12, disconnector static contact assembly 13, disconnector static contact assembly mounting plate 14, output insulator mounting plate 15, output insulator 16, output insulator connection row 17, incoming high-voltage cable 18, outgoing high-voltage cable 19, 10 kV silicone rubber cables 20.1, 20.2, 20.3, etc. The bypass system 1 is located at the front right and rear sides of the manual switching bypass control cabinet. Among them, the disconnector operating room 3 is installed at the front right of the manual switching bypass control cabinet, and there are two disconnector operating mechanisms 5.1, 5.2 installed up and down. The first disconnector, the second disconnector, the input sensor, the disconnector static contact assembly, etc. are installed on the front and rear sides of the manual switching bypass control cabinet;

[0019] There are two disconnector operating mechanisms 5.1, 5.2 in the disconnector operating room. The first disconnector is controlled by the disconnector operating mechanism 5.1 to switch on and off, and the second disconnector 9 is controlled by the disconnector operating mechanism 5.2 to switch on and off;

[0020] The manual bypass primary circuit consists of the first disconnector, the second disconnector, and the disconnector static contact assembly. The first disconnector is fixed on the upper part of the disconnector mounting beam, and the second disconnector is fixed in the middle and lower part of the disconnector mounting beam; when the first disconnector and the second disconnector are in the closed state, the primary system circuit is in the frequency conversion state. When the first disconnector and the second disconnector are in the open state, when the first disconnector 8 is opened, it is connected to the disconnector static contact assembly 13 through the isolating switch; the second disconnector is in closed connection with the switch static contact assembly, and the primary system circuit is in the power frequency state;

[0021] The control room 4 is located at the front left side of the manual switching bypass control cabinet, and a variety of control and detection components are installed inside to detect and control the operation of the frequency converter and provide protection and interlocking actions;

[0022] The isolating switch static contact assembly 13 is fixed on the isolating switch static contact assembly mounting plate 14, and the isolating switch static contact assembly mounting plate 14 is installed at the upper position in the side mounting vertical beam 6.2; The input sensor 11 is installed on the input sensor mounting plate 10, and the input sensor mounting plate 10 is fixed at the top positions of the side mounting vertical beams 6.1 and 6.2. The input sensor connection row 12 is installed on the input sensor 11; The output insulator 15 is fixed on the output insulator mounting plate 14, and the output insulator mounting plate 14 is installed at the middle positions of the side mounting vertical beams 6.1 and 6.2. The output insulator connection row 17 is installed on the output insulator 15; The isolating switch static contact assembly 13 is connected to the upper end of the second isolating switch 9 through a 10 kV silicone rubber cable 20.2; One end of the input sensor connection row 12 is connected to the upper end of the second isolating switch 9 through a 10 kV silicone rubber cable 20.3, and the other end is connected to the incoming high-voltage cable 18. The lower end of the output insulator connection row 17 is connected to the outgoing high-voltage cable 19, and the upper end of the output insulator connection row 17 is connected to the lower end of the first isolating switch 8 through a 10 kV silicone rubber cable 20.1.

[0023] The above is only the preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. Small integrated manual bypass control cabinet, including the control cabinet body, which includes a bypass system, a disconnector operation room and a control room. In the control cabinet body, the disconnector operation room and the control room are located in the front respectively, and the bypass system is located in the back. Its characteristics are as follows: Install a disconnector installation beam and a side installation beam longitudinally in the control cabinet body. The first disconnector and the second disconnector are respectively fixed on the disconnector installation beam. The disconnector static contact assembly mounting plate, the input sensor mounting plate and the output insulator mounting plate are respectively fixed on the side mounting vertical beam. There are two disconnector operating mechanisms, upper and lower, in the disconnector operation room. The disconnector operating mechanism (5.1) controls the first disconnector to switch on and off, and the disconnector operating mechanism (5.2) controls the second disconnector to switch on and off. The disconnector static contact assembly is fixed on the disconnector static contact assembly mounting plate. The input sensor is installed on the input sensor mounting plate, and the input sensor connection row is connected to the input sensor. The output insulator is fixed on the output insulator mounting plate, and the output insulator connection row is connected to the output insulator. The disconnector static contact assembly is connected to the upper end of the second disconnector through a 10kV silicone rubber cable. One end of the input sensor connection row is connected to the upper end of the second disconnector through a 10kV silicone rubber cable, and the other end is connected to the incoming high-voltage cable. The lower end of the output insulator connection row is connected to the outgoing high-voltage cable, and the upper end of the output insulator connection row is connected to the lower end of the first disconnector through a 10kV silicone rubber cable.

2. The small integrated manual bypass control cabinet according to claim 1, characterized in that When the first disconnector and the second disconnector are in the closed state, the primary system circuit is in the frequency conversion state. When the first disconnector and the second disconnector are in the open state, the moving contact of the first disconnector is connected to the disconnector static contact assembly, and the primary system circuit is in the power frequency state.

3. The small integrated manual bypass control cabinet according to claim 2, characterized in that, The primary system circuit consists of the first disconnector, the second disconnector and the disconnector static contact assembly.

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