CN104934874A - A Miniaturized Composite Insulated Switchgear - Google Patents

Abstract

The invention discloses a miniaturized compound insulation switch cabinet which comprises an instrument room, an instrument door, a main bus room, an isolation switch combined electrical appliance, a mutual inductor, a five-prevention interlocking mechanism, a lower door, a grounding knife, a cable room and a lightning arrester. The miniaturized compound insulation switch cabinet has the advantages that: the miniaturized compound insulated switch cabinet introduces new concepts of human engineering, industrial design and the like, and the shell is assembled by adopting an aluminum-zinc coated plate, the color of the operation panel is pleasant, the circuit simulation is clear, so that the product is more attractive, the structure is more reasonable, and the function is more complete. The volume is small, the weight is light, the device can be conveniently installed in underground distribution rooms, floor distribution rooms, box transformers and other narrow and small installation places, and the device is more convenient to use and install in other distribution places.

Description

A Miniaturized Composite Insulated Switchgear

technical field

The invention belongs to the field of electrical technology, and in particular relates to a miniaturized composite insulated switchgear.

Background technique

With the development and transformation of my country's urban and rural power grids, higher requirements are put forward for switch cabinets, especially today when urban land is scarce, the miniaturization of switch cabinets is the general trend. But it should also be objectively recognized that miniaturization puts forward higher requirements for the design of the insulation structure of the switchgear and the selection of insulation materials. If it is improper, it will cause an accident of the high-voltage switchgear.

Contents of the invention

The invention provides a miniaturized composite insulated switchgear to solve the technical problem that the existing switchgear has poor insulation and is likely to cause high-voltage cabinet accidents.

In order to solve the above technical problems, the technical scheme that the present invention takes is:

A miniaturized composite insulated switchgear, the miniaturized composite insulated switchgear includes an instrument room, an instrument door, a main busbar room, an isolating switch combination, a transformer, a five-proof interlock mechanism, a lower door, a grounding knife, and a cable room and lightning arrester, the instrument door is set outside the instrument room, the instrument room is located at the front of the main busbar room and separated by steel plates, and the main busbar room and isolating switch combination are arranged on the top of the switch cabinet , the transformer is connected to the isolating switch combination, the five-proof interlock mechanism is adjacent to the cable room, the lower door is set on the back of the switch cabinet, the grounding knife is connected to the transformer, and the arrester is set on bottom of the switchgear.

Preferably, an ammeter, a voltmeter, a transfer switch and an indicator light are installed in the instrument room.

Preferably, the bottom plate of the meter chamber is equipped with a secondary circuit.

After adopting the above technical scheme, the miniaturized composite insulated switchgear adopts new concepts such as ergonomics and industrial design. The shell is assembled with aluminum-zinc plate, the color of the operation panel is pleasant, and the circuit simulation is clear, making the product more beautiful. The structure is more reasonable and the function is more complete. Small in size and light in weight, it can be easily installed in underground power distribution rooms, floor power distribution rooms, box transformers, and other small installation places, and it is more convenient to use and install in other power distribution places.

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are For some embodiments of the present invention, those skilled in the art can also obtain other drawings based on these drawings without creative effort.

Fig. 1 is the first structural view of the miniaturized composite insulated switchgear of the present invention;

Fig. 2 is the second structural view of the miniaturized composite insulated switchgear of the present invention;

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

As shown in Figure 1 to Figure 2, the miniaturized composite insulated switchgear includes instrument room 1, instrument door 2, main busbar room 3, isolating switch combination appliance 4, transformer 5, five-proof interlock mechanism 6, lower door 7, Ground knife 8, cable room 9 and arrester 10.

The instrument door 2 is set outside the instrument room 1, the instrument room 1 is located at the front of the main bus room 3 and is separated by steel plates, the main bus room 3 and the isolating switch assembly 4 are set on the top of the switch cabinet, and the transformer 5 is combined with the isolating switch The electric appliance 4 is connected, the five-proof interlocking mechanism 6 is adjacent to the cable chamber 9, the lower door 7 is arranged at the back of the switch cabinet, the grounding knife 8 is connected with the transformer 5, and the lightning arrester 10 is arranged at the bottom of the switch cabinet.

The present invention provides a miniaturized composite insulated switchgear with miniaturization, reliable insulation, stable performance, safe operation and convenient maintenance.

The cabinet structure of the insulated switchgear is made of steel plates bent into parts, and then connected with bolts, and its protection level meets the requirements of IP3X. The three-phase arrangement of the switchgear is arranged according to the longitudinal structure, and the three-phase bus connection between the cabinets is more convenient. The instrument room 1 is equipped with components such as ammeter, voltmeter, transfer switch, indicator light, etc., and a secondary circuit is installed on the bottom plate of the instrument room 1 . The circuit breaker is solid-sealed, which increases the external insulation strength of the arc extinguishing chamber, increases the insulation creepage distance, and has stronger anti-pollution and anti-condensation capabilities; the design observation window is equipped with an isolating switch to see the obvious isolation fracture; the circuit breaker and isolation The switch is designed with a mechanical interlock inside the mechanism, which is simple, reliable, and maintenance-free, eliminating the cumbersome and unreliable interlock of the old products in the past.

The five-proof interlock mechanism 6 is complete and reliable, and the miniaturized composite insulated switchgear: no part can be operated after the cabinet door is opened, only the grounding switch interlock is automatically unlocked after the cabinet door is closed, and then -- the grounding switch, the grounding switch Afterwards - the cabinet door is automatically locked, which reliably prevents accidental entry into the live compartment; at the same time, the isolating switch is automatically unlocked by interlocking - closing the isolating switch will not cause the grounding to be closed by mistake; the circuit breaker is automatically interlocked after the isolating switch is closed. Unlocking, while the control circuit is connected, the circuit breaker is closed manually or electrically, which will not cause the circuit breaker to be closed by mistake; on the contrary, the cabinet door can only be opened after the circuit breaker is opened - isolating - and the grounding switch is opened. Locking and unlocking are automatic processes accompanied by operations without human intervention, which avoids misoperation caused by human intervention in previous interlocks.

High parameters and high performance, rated current 630A ~ 1250A, rated short circuit breaking current 20kA ~ 31.5kA, can replace most of the central cabinets and old fixed cabinets.

The installation method is flexible, and it can be installed upright or upside down to enter the line. The miniaturized composite insulated switchgear is a vacuum circuit breaker that can be installed upside down, and has its own isolating switch—with an obvious isolating fracture. Satisfy various flexible wiring schemes of users. Miniaturized composite insulated switchgear, small size, energy saving, beautiful and environmentally friendly.

Miniaturized composite insulated switchgear adopts new concepts such as ergonomics and industrial design. The shell is assembled with aluminum-zinc plate, the color of the operation panel is pleasant, and the circuit simulation is clear, making the product more beautiful, more reasonable in structure and more complete in function. Small in size and light in weight, it can be easily installed in underground power distribution rooms, floor power distribution rooms, box transformers, and other small installation places, and it is more convenient to use and install in other power distribution places.

Finally, it should be noted that: the above embodiments only illustrate the technical solutions of the present invention, and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still understand the foregoing The technical solutions recorded in each embodiment are modified, or some of the technical features are replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims (3)

1. a miniaturized compound inslation switch cubicle, it is characterized in that, described miniaturized compound inslation switch cubicle comprises control room, instrument door, main bus bar room, isolating switch combined electrical apparatus, instrument transformer, five anti-interlocking devices, Xiamen, earthing, cable vault and lightning arrester, described instrument door is arranged on outside described control room, described control room is positioned at the front portion of described main bus bar room and is separated by steel plate, described main bus bar room and isolating switch combined electrical apparatus are arranged on the top of described switch cubicle, described instrument transformer is connected with isolating switch combined electrical apparatus, described five anti-interlocking devices are adjacent with cable vault, described Xiamen is arranged on the back of switch cubicle, described earthing is connected with instrument transformer, described lightning arrester is arranged on the bottom of switch cubicle.

2. miniaturized compound inslation switch cubicle according to claim 1, is characterized in that, be equiped with ammeter, voltmeter, change over switch and indicator light in described control room.

3. miniaturized compound inslation switch cubicle according to claim 2, is characterized in that, described control room inner bottom plating is equiped with secondary circuit.