CN205377147U - Put formula of puing aside switchgear among indoor interchange metal armor - Google Patents

Abstract

The utility model discloses a put formula of puing aside switchgear among indoor interchange metal armor, it relates to cubical switchboard technical field. It has bus -bar room, circuit breaker handcart room, cable chamber, four solitary compartments of relay instrument room to separate in the cabinet body, installs the circuit breaker handcart in the circuit breaker handcart room, and circuit breaker handcart and cabinet body co -ordination of insulation are provided with main bus -bar, static contact devices in the bus -bar room, and the main bus -bar cover is established in female wire sleeve, and the main bus -bar passes through the little generating line of branch to be connected with the static contact devices who installs in the static contact box, and static contact devices is connected with the circuit breaker handcart, the back wall traditional chinese clothing of circuit breaker handcart room is equipped with the valve, and the valve is installed on the static contact box, valve and circuit breaker handcart linkage cooperation, and the circuit breaker handcart passes through secondary plug and is connected with relay instrument room. The utility model discloses easy and simple to handle, effective prevent misuse has improved security, flexibility, and area is few, and corrosion resistance is good, and the inspection of being convenient for is maintained.

Description

Indoor AC metal armored central removable switchgear

technical field

The utility model relates to the technical field of technical switch cabinets, in particular to an indoor AC metal armored central removable switchgear.

Background technique

Indoor AC metal armored center-mounted removable switchgear is a complete set of power distribution equipment for 3-10kv three-phase AC 50Hz single-wire and single-busbar segmental systems, mainly used in power plants, small and medium-sized generators for power transmission, and industrial and mining enterprises. It is used for control, protection and monitoring of secondary substations in power distribution and electrical systems, such as receiving and transmitting power and starting large-scale high-voltage motors. The switchgear in the prior art occupies a large area and has poor corrosion resistance. Inspection and maintenance are extremely inconvenient. In addition, the equipment is prone to misoperation, with low safety, poor flexibility and poor reliability.

Therefore, those skilled in the art are devoting themselves to developing an indoor AC metal-clad center-mounted removable switchgear.

Utility model content

In view of the above-mentioned defects of the prior art, the technical problem to be solved by the utility model is to provide an indoor AC metal armored center-mounted removable switchgear with reasonable structural design, easy operation, effective prevention of misoperation, and improved safety. Flexibility, small footprint, good corrosion resistance, easy inspection and maintenance, strong practicability, and easy promotion and use.

In order to achieve the above purpose, the utility model provides an indoor AC metal armored center removable switchgear, including a cabinet body, a busbar room, a circuit breaker handcart room, a cable room, a relay instrument room, a small busbar room, and a main busbar , static contact device, circuit breaker handcart, current transformer, grounding switch, cable, lightning arrester and grounding main bus. Compartment, circuit breaker handcart is installed in the circuit breaker handcart room, and the circuit breaker handcart is insulated and coordinated with the cabinet body. A small busbar room is installed above the relay instrument room. The main busbar, static contact device, branch small Busbar, busbar bushing, static contact box, the main busbar is set in the busbar bushing, the main busbar is connected with the static contact device installed in the static contact box through the branch small busbar, and the static contact device is connected with the circuit breaker hand Vehicle connections, current transformers, grounding switches, cables, lightning arresters, and grounding main busbars are installed in the cable room.

As a preference, the cabinet body adopts an aluminum-zinc-coated thin steel plate shell, and adopts multiple folding techniques, and the cabinet body adopts an assembled structure, and the cabinet body is connected by blind rivet nuts and bolts.

As a preference, a track is installed in the handcart room of the circuit breaker, and the handcart of the circuit breaker is slidably arranged on the track, and a valve is installed in the rear wall of the handcart room of the circuit breaker, and the valve is installed on the static contact box , the valve is coordinated with the handcart of the circuit breaker; a heating device to prevent humidity and temperature changes is installed in the handcart room of the circuit breaker, and a device is installed on the door of the handcart room of the circuit breaker to observe the position of the handcart of the circuit breaker in the compartment, Closing, opening display, observation window for energy storage status.

As a preference, the circuit breaker handcart is connected to the relay instrument room through a secondary plug, the moving contact of the secondary plug is connected to the circuit breaker handcart through a nylon corrugated telescopic tube, and the static contact of the secondary plug is installed in the installation On the static contact seat at the top right of the handcart compartment of the circuit breaker.

As a preference, pressure relief devices are installed above the busbar room, circuit breaker handcart room and cable room. When an internal fault arc occurs in the circuit breaker, main busbar or cable room, the air pressure inside the switch cabinet will rise with the occurrence of the arc. , After reaching a certain pressure, the pressure relief device is automatically opened to release the pressure and discharge the gas to ensure the safety of the operator and the switchgear.

The beneficial effects of the utility model are: (1) The equipment can be installed, debugged and maintained from the front, can be double arranged back to back and installed against the wall, which improves the safety and flexibility of the switchgear and ensures the safety of the operating personnel touching the cabinet. ;

(2) The cabinet not only has high precision, but also has strong anti-corrosion and anti-oxidation effects, long service life, high mechanical strength, small footprint, and is convenient for assembly and production;

(3) The mechanical interlocking action improves the anti-mistake performance, and the operation is light and flexible, suitable for various personnel on duty, and convenient for inspection and maintenance.

The conception, specific structure and technical effects of the present utility model will be further described below in conjunction with the accompanying drawings, so as to fully understand the purpose, characteristics and effects of the present utility model.

Description of drawings

Fig. 1 is a structural representation of the utility model.

detailed description

Referring to Fig. 1, this specific embodiment adopts the following technical scheme: indoor AC metal armored central removable switchgear, including cabinet body 1, busbar room 2, circuit breaker handcart room 3, cable room 4, relay instrument room 5. Small busbar room 6, main busbar 7, static contact device 8, circuit breaker handcart 9, current transformer 10, grounding switch 11, cable 12, lightning arrester 13 and grounding main busbar 14, and busbars are separated in cabinet 1 Room 2, circuit breaker handcart room 3, cable room 4, relay instrument room 5 four separate compartments, circuit breaker handcart room 3 is installed with circuit breaker handcart 9, relay instrument room 5 is installed with small busbar room 6 , the bus room 2 is provided with a main bus 7, a static contact device 8, a small branch bus 15, a bus bushing 16, and a static contact box 17. The main bus 7 is set in the bus bushing 16, and the main bus 7 passes through the branch The small busbar 15 is connected with the static contact device 8 installed in the static contact box 17, the static contact device 8 is connected with the circuit breaker handcart 9, the current transformer 10, the grounding switch 11, the cable 12, the lightning arrester 13, the grounding main The busbars 14 are installed in the cable compartment 4 .

It is worth noting that the cabinet body 1 adopts an aluminum-zinc-coated thin steel sheet shell with multiple folding processes, which is processed by CNC machine tools. The multiple folding processes make the entire cabinet not only have high precision, strong corrosion resistance and oxidation resistance Function, and because of the multiple folding process, the overall weight of the cabinet is lighter than that of other similar equipment cabinets, with high mechanical strength and beautiful appearance; the cabinet 1 adopts an assembled structure, and the cabinet 1 uses rivet nuts and high-strength bolts It is formed by connecting, so that the processing and production cycle is short, the parts are highly versatile, and the floor space is small, which is convenient for assembly and production.

In addition, the main electrical components in this specific embodiment have their own independent compartments, namely the busbar room 2, the circuit breaker handcart room 3, the cable room 4, and the relay instrument room 5. Due to the mid-mounted form, the position of the cable room can be increased. , so the equipment can be connected to various cables, and the small bus room 6 can lay sixteen control small bus bars according to user requirements, and the protection level of each compartment can reach IP2X; except for the relay instrument room 5, the bus room 2 and the circuit breaker handcart There is a pressure relief device 22 above the chamber 3 and the cable chamber 4. When an internal fault arc occurs in the circuit breaker or the main busbar or the cable chamber, the air pressure inside the switchgear rises with the occurrence of the arc. After reaching a certain pressure, the pressure relief device 22 will be automatically opened to release pressure and discharge gas to ensure the safety of operators and switch cabinets.

In this specific embodiment, the handcart skeleton of the circuit breaker handcart 9 is also made of thin plates processed by CNC machine tools. The circuit breaker handcart 9 and the cabinet body 1 are insulated and matched, and the mechanical interlocking is safe, reliable and flexible; the circuit breaker handcart 9 In the circuit breaker handcart room 3, there are disconnection position/test position and working position, and each position has a positioning device to ensure reliable interlocking, and must be operated according to the interlocking anti-misoperation procedure; circuit breaker handcart 9 The worm gear and worm are used to propel and withdraw by shaking. Its operation is light and flexible, and it is suitable for various personnel on duty. When the handcart needs to be removed from the cabinet, a special transfer vehicle can be used to take it out conveniently for various inspections. Maintenance, and adopts the middle type, this car is small in size, and it is very convenient for inspection and maintenance.

The circuit breaker handcart 9 is equipped with a vacuum circuit breaker and other auxiliary equipment. When the handcart is transported into the circuit breaker handcart room 3 with a running car, it can be reliably locked at the disconnected position/test position, and the cabinet position indicator light is convenient. It shows its position, and only after it is completely locked, can the propulsion mechanism be shaken to push the handcart to the working position; after the handcart reaches the working position, the propulsion handle will not move, and the corresponding position indicator will show its position, and the handcart will The mechanical interlock of the trolley can reliably ensure that the circuit breaker can be closed only when the handcart is in the working position or the verification position, and the circuit breaker can only be moved when the handcart is in the open state.

A track 18 is installed in the circuit breaker handcart room 3 for the circuit breaker handcart 9 to move and slide from the disconnected position/test position to the working position in the cabinet; a valve 19 is installed in the rear wall of the circuit breaker handcart room 3 , the valve 19 is installed on the static contact box 17, and the valve 19 cooperates with the circuit breaker handcart 9. When the circuit breaker handcart 9 moves from the disconnected position/test position to the working position, the valve 19 and the circuit breaker handcart 9 are linked and opened automatically at the same time; when moving in the opposite direction, the valve 19 is automatically closed until the circuit breaker handcart 9 retreats to a certain position and completely overturns the static contact box 17 to form an effective isolation. During maintenance, the live valve can be locked to ensure that the maintenance personnel do not touch the charged body; when the door of the handcart room 3 of the circuit breaker is closed, the handcart can also be operated; the door is provided with an observation window, It can observe the position of the handcart 9 of the circuit breaker in the compartment, the display of closing and opening, and the energy storage status.

In order to prevent the danger of condensation in a climate environment with high temperature, humidity and large temperature changes, a heating device 20 is installed in the handcart compartment 3 of the circuit breaker for use in the above environment and to prevent corrosion.

In this specific embodiment, the connection between the secondary line of the circuit breaker handcart 9 and the secondary line on the switchgear is realized through the manual secondary plug 21, and the movable contact of the secondary plug 21 is connected to the circuit breaker through the nylon corrugated telescopic tube. The handcart 9 is connected, and the static contact of the secondary plug 21 is installed on the static contact seat installed on the upper right of the handcart chamber 3 of the circuit breaker. The handcart 9 of the circuit breaker can only be plugged in when it is in the disconnected position/test position. On and off the secondary plug 21, when the circuit breaker handcart 9 is in the working position, due to the mechanical interlocking effect, the secondary plug 21 is locked and cannot be released; because the closing mechanism of the circuit breaker handcart 9 is locked by the electromagnet, the circuit breaker The handcart 9 can only be opened before the secondary plug 21 is connected, so it cannot be closed.

In this specific embodiment, a live display device for detecting the operation of the primary circuit can be provided in the switch cabinet according to the use requirements. The device is composed of a high-voltage sensor and a portable display. It prompts the electrified status of the high-voltage circuit, and can also cooperate with the electromagnetic lock to realize the forced locking of the switch handle and the net door, so as to prevent the grounding switch from being electrified and from entering the electrified interval by mistake, so as to improve the anti-mistake performance of supporting products.

The use conditions of this specific embodiment: (1) the altitude does not exceed 1000m; (2) the ambient air temperature: the upper limit is +40 ° C, the lower limit is -10 ° C in general areas (allowing storage and transportation at -25 ° C); (3) ambient humidity: The daily average relative humidity is not more than 95%; the monthly average relative humidity is not more than 90%; (4) Earthquake: the seismic intensity does not exceed 8 degrees; (5) It is suitable for frost condensation and Class II polluted environments.

This specific implementation mode meets the requirements of IEC298, GB3906 and other standards, and has the functions of preventing the handcart of the circuit breaker from being pushed and pulled under load, preventing the circuit breaker from being opened and closed by mistake, preventing the circuit breaker from being closed when the grounding switch is in the closed position, preventing it from entering the charged compartment by mistake, preventing The interlocking function of the grounding switch is wrongly closed when it is charged. The protection level of the shell is IP4X. The protection level of each small room and the circuit breaker room door is IP2X. It has overhead incoming and outgoing lines, cable incoming and outgoing lines and other functional schemes. After arrangement and combination Afterwards, it can become a power distribution device in various schemes. The equipment can be installed, debugged and maintained from the front, and can be double-arranged back-to-back and installed against the wall, which improves the safety and flexibility of the switchgear and effectively reduces the floor space. It has broad market application prospects.

The preferred specific embodiments of the present utility model have been described in detail above. It should be understood that those skilled in the art can make many modifications and changes according to the concept of the present utility model without creative efforts. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the prior art should be within the scope of protection defined by the claims .

Claims (8)

1. null1. indoor AC metal armored middle disposed withdrawn type switchgear，It is characterized in that: include cabinet (1)、Bus-bar room (2)、Circuit breaker cart room (3)、Cable vault (4)、Relay control room (5)、Little bus-bar room (6)、Main bus-bar (7)、Static contact head device (8)、Circuit breaker cart (9)、Current transformer (10)、Earthed switch (11)、Cable (12)、Spark gap (13) and earthing main bus (14)，Cabinet (1) separates and has bus-bar room (2)、Circuit breaker cart room (3)、Cable vault (4)、The independent compartment in (5) four, relay control room，Circuit breaker cart room (3) is provided with circuit breaker cart (9)，Circuit breaker cart (9) and cabinet (1) Insulation Coordination，Relay control room (5) little bus-bar room (6) installed above，Bus-bar room (2) is provided with main bus-bar (7)、Static contact head device (8)、The little bus of branch (15)、Bus casing (16)、Stationary contact head cartridge (17)，Main bus-bar (7) is set in bus casing (16)，Main bus-bar (7) is connected with the static contact head device (8) being arranged in stationary contact head cartridge (17) by the little bus of branch (15)，Static contact head device (8) is connected with circuit breaker cart (9)，Current transformer (10)、Earthed switch (11)、Cable (12)、Spark gap (13)、Earthing main bus (14) is installed in described cable vault (4).
2. 2. indoor AC metal armored middle disposed withdrawn type switchgear as claimed in claim 1, it is characterized in that: described cabinet (1) adopts the aluminizing zinc sheet steel enclosure of multiple seaming operation, cabinet (1) adopts modular construction, and cabinet (1) forms by blind nut and bolt-connection.
3. 3. indoor AC metal armored middle disposed withdrawn type switchgear as claimed in claim 1, it is characterized in that: being provided with track (18) in described circuit breaker cart room (3), circuit breaker cart (9) is slidably arranged on track (18).
4. 4. indoor AC metal armored middle disposed withdrawn type switchgear as claimed in claim 1, it is characterized in that: the rear wall of described circuit breaker cart room (3) is equiped with valve (19), valve (19) is arranged on stationary contact head cartridge (17), and valve (19) and circuit breaker cart (9) are linked.
5. 5. indoor AC metal armored middle disposed withdrawn type switchgear as claimed in claim 1, it is characterised in that: described circuit breaker cart room (3) is provided with the heater (20) preventing humidity and variations in temperature.
6. 6. indoor AC metal armored middle disposed withdrawn type switchgear as claimed in claim 1, it is characterized in that: described circuit breaker cart (9) is connected with relay control room (5) by secondary plug (21), the moving contact of secondary plug (21) is connected with circuit breaker cart (9) by nylon bellows, and the static contact of secondary plug (21) is arranged on and is installed on circuit breaker cart room (3) top-right fixed contact pedestal.
7. 7. indoor AC metal armored middle disposed withdrawn type switchgear as claimed in claim 1, it is characterised in that: be provided with on the room door of described circuit breaker cart room (3) and can observe compartment inner breaker handcart (9) present position, splitting or integrating lock shows, the observation window of energy storage situation.
8. 8. indoor AC metal armored middle disposed withdrawn type switchgear as claimed in claim 1, it is characterised in that: described bus-bar room (2), circuit breaker cart room (3), cable vault (4) top are provided with pressure relief device (22).