CN201663383U - Railway electrification gas insulated switch cabinet - Google Patents

Abstract

The utility model discloses a railway electrification gas insulated switch cabinet, which comprises a cabinet body, an instrument chamber, a mechanism chamber, a cable chamber, a lower air chamber, an upper air chamber and a bus chamber. The instrument chamber, the mechanism chamber, the cable chamber, the lower air chamber, the upper air chamber and the bus chamber are disposed in the cabinet body and mutually separated, a separation operating mechanism and a circuit breaker operating mechanism are arranged in the mechanism chamber, a plug-in voltage transformer, a plug-in ZnO lightning arrestor, a plug-in cable and a cable feed-through current transformer are arranged in the cable chamber, a circuit breaker is disposed in the lower air chamber, a three-position switch is disposed in the upper air chamber, the lower air chamber and the upper air chamber are filled with SF6 gas, a bus is disposed in the bus chamber, the separation operating mechanism is connected with the three-position switch, and the circuit breaker operating mechanism is connected with the circuit breaker. The switch cabinet has the advantages of compact structure, reasonable element arrangement, attractive appearance, fine sealing property, reliable interlocking, long service life, high opening and closing capacity, reliable and safe operation, convenient field installation and the like.

Description

The railway electrification gas insulation switch cabinet

Technical field

The utility model relates to a kind of gas insulation switch cabinet.

Background technology

Development along with domestic economy, the electric railway technology is rapidly improved, electric railway has been proposed more demand with combined electrical apparatus, according to People's Republic of China's railroad industry standard and all the other this electrical standards of dependency basis, the design speed per hour reaches on 300 kilometers/hour and the above railway line switch cubicle and mainly selects bipolar C-GIS inflation cabinet for use, and have double-pole cut-out to match with it, existing homemade goods is difficult to meet the demands; Its voltage between phases is 55kV, and existing homemade goods insulation property are difficult to reach requirement; This product inflation housing machining accuracy, intensity and air-tightness are had relatively high expectations, and homemade goods technology is difficult to guarantee.

Summary of the invention

For solving the problems referred to above that existing homemade switch cubicle exists, the utility model provides a kind of railway electrification gas insulation switch cabinet, and its technical scheme of taking is:

This switch cubicle comprises cabinet and is located in the cabinet and the control room that isolates mutually, the mechanism chamber, the cable vault, lower chamber, upper chamber and bus-bar room, indoor being provided with of mechanism isolated operating mechanism and breaker operation mechanism, be provided with the plug-in type voltage transformer in the cable vault, the plug-in type ZnO arrester, plug-in type cable and cable straight-through current transformer, be provided with circuit breaker in the lower chamber, be provided with three position switch in the upper chamber, fill SF6 gas in lower chamber and the upper chamber, be provided with bus in the bus-bar room, isolate operating mechanism and connect three position switch, breaker operation mechanism connects circuit breaker.

This switch cubicle meets corresponding national standards and Ministry of Railways's industry standard, and the railway electrification of independent research can match with this cabinet with vacuum circuit-breaker; Design suitable spaced apart, make full use of SF ₆Superior insulation property have solved alternate, alternate Insulation Problems over the ground; The inflation housing is the compound casing of corrosion-resistant square box shape air-tightness that new design structure, manufacturing process, welding procedure, the method for inspection etc. are produced high dimensional accuracy, little welding deformation, satisfies the requirement of air-tightness, intensity.

This switch cubicle have compact conformation, arrangements of elements rationally, reliable, the long service life of good looking appearance, good airproof performance, interlocking, cut-off and reliable and secure, the on-the-spot advantage such as easy for installation of making capability height, operation.

Description of drawings

Accompanying drawing is a structural representation of the present utility model.

Embodiment

Below in conjunction with accompanying drawing the utility model is described further:

As shown in the figure, switch cabinet body 1 selects for use high-quality aluminizing zine plate through numerical control metal plate apparatus processing bending and forming, be formed by connecting by high-intensity fasteners, the cabinet door is selected high duty alloy steel plate bending and molding for use, adopt Suo to mould technology, make like this cabinet 1 not instrument have very high precision, and compare with same category of device have in light weight, mechanical strength is high, the advantage of good looking appearance.

This switch cubicle structure is divided six independently compartments by function: control room 11, mechanism chamber 12, cable vault 13, lower chamber 14, upper chamber 15 and bus-bar room 16, and separate between each compartment, prevent the expansion of fault between each chamber.Dress measuring instrument, change over switch, charged display unit, signal lamp and other control, protection, signalling arrangement in the control room 11.Be equipped with in the mechanism chamber 12 and isolate operating mechanism 1 and breaker operation mechanism 2, isolating operating mechanism 1 can electronic or manual operation, and its electric operating adopts the PLC module controls, can avoid misoperation effectively.Working position is equipped with and clearly illustrates, sends corresponding electric signal simultaneously, and breaker operation mechanism 2 is selected spring operating mechanism for use, is positioned over outside the lower chamber 14 easy access and maintenance.Plug-in type voltage transformer 3 is installed at 13 places, cable vault, plug-in type ZnO arrester 4, and plug-in type cable 6, current transformer 5 adopts the cable punching, and on-the-spot easy for installation, the set-up time is short.Bus 9 is housed in the bus-bar room 16, this bus adopts the solid insulation bus, because of causing the phenomenon of easy gas leakage, factors such as ground deviation take place when effectively having avoided gas bus scene and cabinet, the problem that avoided also that the gas bus is installed at the scene, vacuumized when moving, inflation, moisture processing etc. relates to the in-situ processing of SF6 gas, thus on-the-spot easy for installation.

Lower chamber 14 and upper chamber 15 housings select for use the high-quality corrosion resistant plate through laser cutting blanking, numerical control bending, are welded by argon arc welding technique at last.In the same switch cubicle, lower chamber 14 is separated into two different air chambers with upper chamber 15, in fill SF6 gas as dielectric, the air chamber between different switch cubicles is also separate.Three position switch 8 is installed in the upper chamber 15, have bus connection, isolation, three kinds of functions of ground connection, the centre is the isolated location, at two extreme positions, switch is in bus coupled position and earthing position respectively, and three position switch 8 is operated by isolating operating mechanism 1.Circuit breaker 7 is installed in the lower chamber 14, circuit breaker 7 utilizes high these characteristics of the SF6 gas-insulated intensity of vacuum extinction outdoor, novel evacuated arc control device of adapted and spring operating mechanism 2, made full use of the break performance of vacuum interrupter excellence, compact conformation, superior performance, reliability height, circuit breaker 7 is operated by spring operating mechanism 2, and cooperates with three position switch 8 and to carry out the ground connection operation.

Claims (1)

1. railway electrification gas insulation switch cabinet, comprise cabinet (10) and be located in the cabinet (10) and the control room (11) that isolates mutually, mechanism chamber (12), cable vault (13), lower chamber (14), upper chamber (15) and bus-bar room (16), it is characterized in that: establish row in mechanism chamber (12) and isolate operating mechanism (1) and breaker operation mechanism (2), be provided with plug-in type voltage transformer (3) in the cable vault (13), plug-in type ZnO arrester (4), plug-in type cable (6) and cable straight-through current transformer (5), be provided with circuit breaker (7) in the lower chamber (14), be provided with three position switch (8) in the upper chamber (15), fill SF6 gas in lower chamber (14) and the upper chamber (15), be provided with bus (9) in the bus-bar room (16), isolate operating mechanism (1) and connect three position switch (8), breaker operation mechanism (2) connects circuit breaker (7).

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