CN110165623A - Modularization bus duct positive-displacement apparatus - Google Patents

Abstract

Modular bus duct variable capacity device, including box body, access joint assembly and output joint assembly, the box is equipped with a circuit breaker with isolation function and a detection module access joint for detecting the operating status of the bus duct after variable capacity There is an opening at one end of the component, one end can be directly connected to the high-current bus duct, and the other end is connected to the incoming line of the circuit breaker. According to the calculation of the load and short-circuit current, the parameters of the rated current level, rated and limit short-circuit current value of the circuit breaker are selected; One end of the joint assembly is connected to the incoming line end of the circuit breaker, and the other end is directly connected to the small current busway. The current and temperature detection unit is set in the box, which can be converted into a 4~20mA current signal output through the transmitter; the control lead-out unit is set in the box, which can control the opening and closing of the variable capacitance device through the local button box. It can provide effective short-circuit protection and overload protection for the busway behind the variable capacity unit, small in size, strong in function, and reliable in use.

Description

Modular busway variable capacity device

technical field

The invention belongs to the technical field of electric power equipment, and relates to a modularized bus duct variable capacity device which provides effective short-circuit and overload protection functions.

Background technique

Chinese patent CN200930291965.0 busway (variable capacity section unit 2) is used to increase the size of the control current with the increase of variable capacity section units. It is characterized in that each unit is equipped with multiple sets of joint components, and the direction is configured with corresponding current levels. section header component.

Chinese patent CN200930291964.6 busway (variable capacity section unit 1), the busway can adjust the size of the capacitance, and when it needs to be reduced, it can be connected with a different capacity busway. It is characterized in that each unit is equipped with a set of joint components. Configure the joint head components of the corresponding current level.

Chinese patent CN201620970207.6 is a variable capacitance connection structure for a busbar. The busbars are fixedly installed at the end of the slot and the small current bus slot near the bus connector, and the surfaces of the large current bus slot and the small current bus slot are covered with insulating sleeves. The surface of the insulating sleeve contacts the inner wall of the box, and the bus bar is connected The surface of the busbar connector is fixedly connected with an insulating plate. The inside of the busbar connector is respectively provided with a battery core and two limiting plates. The two limiting plates are arranged symmetrically about the central axis of the busbar connector. a piece of copper. The variable-capacity connection structure of the busbar has a simple structure and is convenient to use, and can better fix conversion and connection equipment during use, thereby increasing the safety of the busway during use.

However, the disadvantages of these three patented technologies are: the bus duct behind the variable capacity unit cannot provide effective short-circuit protection and overload protection defects, and the operating status of the variable capacity unit cannot be monitored and fed back.

Contents of the invention

The purpose of the present invention is to provide a modular busway variable capacity device that overcomes the shortcomings of the above-mentioned prior art, provide effective short-circuit protection and overload protection for the rear busway of the variable capacity unit, and monitor the operating status of the variable capacity busway and A modularized busway variable capacity device that realizes the variable capacity function of the main line of the busway.

Technical scheme of the present invention:

Modular bus duct variable capacity device, including box body, access joint assembly and output joint assembly, the box is equipped with a circuit breaker with isolation function and a monitoring module for the operating status of the bus duct; one end of the access joint assembly There are openings that can be directly connected to the high-current bus duct, and the other end is connected to the incoming line end of the circuit breaker; one end of the outlet joint assembly is connected to the incoming line end of the circuit breaker, and the other end is directly connected to the small current bus duct. The electrical system is as follows: the copper bar used as the access joint component is connected to the high-current bus duct, and the copper bar used as the outgoing joint component is connected to the small current bus duct. The box is equipped with short-circuit protection and overload protection. A circuit breaker QF, a current transformer TA for detecting the current at the variable capacity device, and an infrared temperature detector T for detecting the temperature at the variable capacity device.

A circuit breaker is installed in the box to provide effective short-circuit protection and overload protection for the busway behind the variable capacity unit.

A current and temperature detection unit is installed in the box to convert the current and temperature state signals into 4~20mA current signal output.

A control button box is arranged in the box to control the opening and closing of the variable capacity device through the output terminal.

Beneficial effects of the invention: due to the adoption of modular design and the addition of circuit breakers and operation monitoring modules, the modularized busway variable capacity device of the present invention can provide effective short-circuit protection and overload protection for the rear busway of the variable capacity unit. The operating status of the busway and realize the function of changing the capacity of the main line of the busway; it can realize the multi-stage variable capacity of the main line of the busway; at the same time, it has the advantages of convenient installation, small size, strong function and reliable use.

Description of drawings

Fig. 1 is a schematic structural diagram of a variable capacity device for a modular busway of the present invention.

Fig. 2 is a diagram of the electrical system of the variable capacitance device for the modularized bus duct of the present invention.

In the figure: 1-box body, 2-connection joint assembly, 3-connection joint assembly, 4-button box, 5-circuit breaker.

Detailed ways

The technical scheme of the present invention will be further described below in conjunction with the accompanying drawings.

As shown in Figure 1, the modularized busway variable capacity device includes a box body 1, a circuit breaker 5 is arranged inside the box body 1, an access joint assembly 2 is arranged on one side of the box body 1, and the other side of the box body 1 There is an outlet joint assembly 3, and the control cable is led out from the box body 1 to the local button box 4. There is an opening on the access joint assembly 2, which can be directly connected to the high-current bus duct; the other end of the access joint assembly 2 is connected to the incoming line end of the circuit breaker, and the rated current level, rating and limit of the circuit breaker are selected according to the load calculation Short circuit current value parameter. One end of the outlet joint assembly 3 is connected to the outlet end of the circuit breaker 5, and the other end is directly connected to the small current bus duct. A current and temperature detection unit is installed in the cabinet 1, which can be converted into a 4~20mA current signal by a transmitter and output through a signal output terminal. A button box 4 is arranged in the box body 1 to control the opening and closing of the variable capacity device through the output terminal.

As shown in Figure 2, the electrical system of the variable capacitance device of the modular bus duct is as follows: the copper bar used as the access joint component is connected to the high-current bus duct, and the copper bar used as the joint joint component is connected to the low-current bus duct The box is equipped with a circuit breaker QF for short-circuit protection and overload protection, a current transformer TA for detecting the current at the variable capacitance device, and an infrared temperature detector T for detecting the temperature at the variable capacitance device.

Claims (4)

1. Modular busway variable capacity device, characterized in that: it includes a box body, an access joint assembly and an output joint assembly, and a circuit breaker with isolation function and a monitoring module for the operating status of the bus duct are installed in the box; There is an opening on one end of the entry joint assembly, which can be directly connected to the high-current bus duct, and the other end is connected to the incoming line end of the circuit breaker; one end of the outgoing joint assembly is connected to the incoming line end of the circuit breaker, and the other end is connected to the small current busbar The electrical system is: connected to the high-current bus duct through the copper bar used as the access joint component, connected to the small current bus duct through the copper bar used as the access joint component, and short-circuit protection and The circuit breaker QF for overload protection, the current transformer TA for detecting the current at the variable capacity device, and the infrared temperature detector T for detecting the temperature at the variable capacity device. 2. The modularized busway variable capacity device according to claim 1, characterized in that: a circuit breaker is installed in the box to provide effective short circuit protection and overload protection for the rear busway of the variable capacity unit. 3. The variable capacitance device of the modularized busway according to claim 1, characterized in that: a current and temperature detection unit is installed in the box to convert the current and temperature state signals into 4~20mA current signal output. 4. The variable capacity device for modular busway according to claim 1, characterized in that: a control button box is arranged in the box to control the opening and closing of the variable capacity device through the output terminal.