SU1529333A1 - Explosion-proof electric device - Google Patents

Abstract

The invention relates to electrical engineering, to electrical devices intended for operation in explosive mines and chemical plants. The aim of the invention is to simplify the design and reduce the size. The device contains an explosion-proof sheath 1 in which the apparatus 2 is housed, explosion-proof compartments of the inlets 3 and outlets 4, two panels 5 and 6 with pass-through clamps 7 and 8, mounted on the partition 9 and forming an additional explosion-proof compartment in which the movable panel 10 with movable contacts 11, mounted on the shaft 12 with the handle 14. When the movable panel 10 rotates, the contacts 11 are connected with passage clamps 7 and 8, used as fixed contacts of the disconnecting device. Thus, the voltage on the apparatus 2 can be applied only in a certain position of the movable panel without the use of a special disconnecting device. 1 hp ff, 2 ill.

Description

315

I The invention relates to electrical engineering, to explosion-proof electrical devices intended for the use in explosion-proof shafts and chemical plants, namely, to an impermeable magnetic starter, automatic grids.

The aim of the invention is to simplify the design and reduce the size.

FIG. 1 and 2 show the design of the explosion of the 1Grsshchennogo electrotechnical device, i.e.

An explosion-proof electrical device consists of an explosion-proof enclosure 1, in which equipment 2 is mounted, explosion-proof compartments of inputs 3 and exits 4, two panels 5 and 6 with pass-through clamps 7 and 8 fixed to the partition 9 between the compartments of inputs 3 and explosion-proof shell 1. Panels 5 and 6 are fixedly mounted on the partition 9 and provide an explosion-proof connection with it. Therefore, between panels 5 and 6, an additional explosion-proof compartment is formed, in which the movable panel 10 with movable ends tacts 11. The maintenance panel through the shaft 12, disengaged through the explosion-proof unit 13 in panel 6, is connected with a handle 14 located outside the shell and interlocked with a cover 15 providing access to the shell so that the cover can be opened in the position of the handle 14, when the chains between pass clamps 7 and 8 are movable

At the same time, the separation of the casing into two compartments, the installation of pass-through clamps and wiring elements between the disconnector and pass-through clamps between these compartments, is not required. The functions of the disconnecting device (disconnector) of the passage clamps, the mounting elements between them, and the separation of the disconnector from the roof. between the cover and the separation of the explosion-proof enclosure, the assembly of panels 5, 6, and 10 with contacts 7, 8, and 11, which

In devices that must ensure the load reversal manually, a switch 16 of two phases is embedded in the casing. since switching can be made only after disconnecting the clamps 7 and 8 and opening

covers 15, I

The apparatus 2 is mounted on the removable panel 17 and connected to the separation of the leads 4 and then to the electric receiver through the bushing clamps 18 and the switch 16 of the two phases. To simplify the design, the switch 16 of the two phases is designed as a detachable electrical connector consisting of three pins 19-21 and two contacts mounted on a removable insulating

pins -11 open, 71l simplified - panels 22, Contacts 19-21 mounted

on the insulation panel 23 mounted on the removable panel 17, Movable contacts 11 mounted on the mobile panel 10 are spring-loaded

Neither the design of the apparatus, the movable panel 10 is made with the possibility of rotation. In this case, the movable contacts 11, located on the movable panel 10 in a certain position of it, co-dz 24, With the lid 15 closed with the handle

The terminals 7 and B are interconnected between each other in pairs, ensuring the electrical connection of the passage clamps 7 in the compartment of the bushings with the apparatus 2 located in the hardware compartment. Thus, the voltage on the passage clamps 8 and the equipment located in the explosion-proof casing can only be supplied in one position of the movable panel 10, in the other, putting it on all elements located in the casing 1 of the apparatus, there is no voltage, which ensures required level of security.

14, the panel 10 is set in motion, which closes the terminals 7 and 8 and supplies voltage to the elements located in the hardware compartment. These elements are powered and perform the functions for which the apparatus is designed

If it is necessary to reverse the load with the handle 14, the panel 10 is set to a position in which the circuit between terminals 7 and 8 is open and, therefore, with the apparatus 2 located in the shell 1, the voltage is removed. After that, the cover is 15

eleven

Compiled by B.Filippov Editor T.Lazorenko Tehred L.Serdyukova Corrector S.Shekmar

Order 7753/50

Circulation 608

VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow, Zh-35, Raushsk nab. 4/5

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Claims (2)

Claim 1. An explosion-proof electrical device containing an explosion-proof 36 enclosure with equipment located inside it, an explosion-proof input compartment separated by a partition of an explosion-proof enclosure, passage clamps and a disconnecting device, characterized in that, with the aim of simplifying designs and reducing dimensions, it is equipped two fixed and one movable panels, while the fixed panels are connected to the partition and form an additional explosion-proof compartment, inside which is placed a movable panel, a disconnecting device, is formed by fixed and movable contacts, while the fixed contacts are formed by parts of passage clamps located between the fixed panels, and the movable contacts are mounted on the movable panel. 2. The device according to π. 1, characterized in that the fixed panels are fixed on the inner and outer sides of the partition, and the movable panel is rigidly fixed to a shaft connected to a handle located outside the explosion-proof Shell.