RU48440U1 - EXPLOSION-PROTECTIVE LAB - Google Patents

Abstract

The utility model relates to electrical products, in particular to electrical energy distribution panels in lighting networks and can be used for operation in hazardous areas according to the “Electrical Installation Rules” (PUE), chapter 7.3 “Electrical Installations in Explosive Areas”, GOST R 51330.9 and others regulatory documents that determine the applicability of electrical equipment in hazardous areas. The technical result that can be obtained using the proposed utility model is to reduce the size and weight, high mechanical strength, withstand the pressure of the explosion and prevent the transfer of the explosion into the environment. The explosion-proof lighting panel consists of basic modules: a connecting module 1, a disconnector module 2, linear modules 3, 4, while each basic module consists of a housing 5 and a cover 6, interconnected by screws (not shown in Fig.), And linear in the shell modules 3, 4 are placed single-pole circuit breakers 7 of three automatic machines or a three-pole circuit breaker (not shown in Fig.), enclosed in its own explosion-proof shell 8, three-pole input circuit breaker 9, concluded in the explosion-proof enclosure 10 of the disconnector module 2, while in the shell of the linear modules 3, 4 there are working and protective zero tires 11, 12 and internal ground clamps (not shown in Fig.), electrically connected to the external ground clamps 13, in the connecting shell 1, terminal block 14 or terminal block 15 for connecting external conductors (not shown in Fig.) are located, and on the shells of linear modules 3, 4 and

cable glands 16, 17 for inputting external cables (not shown in FIG.) are located on the connecting module 1. IL 2 1 P. F.

Description

The technical field to which the utility model relates.

The utility model relates to electrical products, in particular to electrical energy distribution panels in lighting networks and can be used for operation in hazardous areas according to the “Electrical Installation Rules” (PUE), chapter 7.3 “Electrical Installations in Explosive Areas”, GOST R 51330.9 and others regulatory documents that determine the applicability of electrical equipment in hazardous areas.

State of the art

Known switchboard containing a frame, busbars, wire and a set of terminals, while the busbars are arranged in horizontal rows (packets) with insulating spacers between them and a power source is connected to each busbar, and flexible wires located perpendicular to the busbar, one end with the clamps are attached to each bus, and the second through the terminals to each current collector (see as. S. USSR No. 184309, class. H 02 V 1/20).

The disadvantage of this shield is the large size and weight, the inability to withstand the pressure of the explosion and the exclusion of the transfer of the explosion into the environment.

A standard explosion-proof switchgear for electric heating systems is known, including a 4-pin linear switch, 2-pin automatic fuse, C - character, cable and line inputs (see "Explosion-proof electrical equipment", Cooper Crouse - Hinds / CEAG, Houston, USA).

The disadvantage of this device is the large size.

The closest in technical essence and the achieved positive effect and adopted by the authors for the prototype is an explosion-proof lighting plate containing basic modules - connecting, linear with single-pole circuit breakers of three circuit breakers, a disconnector with a three-pole input circuit breaker of one circuit breaker, each basic module consists of from the case and the cover, interconnected by screws (see. Explosion-proof lighting guards of type ЩОВ - 2А. Operation manual KIND. 656517.001 RE. Zelenokumsk, 2003).

Its disadvantages are large dimensions, a welded steel structure and, as a result, a large mass of 105 kg, as well as the fact that three-pole circuit breakers are enclosed in an explosion-proof enclosure of the disconnector, and single-pole circuit breakers are enclosed in an explosion-proof enclosure of the main body, while separating the input device, disconnector, the main body and the output device are separated by flameproof partitions and are connected to each other through passage clamps.

Utility Model Disclosure

The technical result that can be obtained using the proposed utility model is to reduce the size and weight, high mechanical strength, withstand the pressure of the explosion and prevent the transfer of the explosion into the environment.

The technical result is achieved using an explosion-proof lighting plate containing basic modules - connecting, linear with single-pole circuit breakers of three circuit breakers, a disconnector with a three-pole input circuit breaker of one circuit breaker, each basic module consists of

the casing and the cover, interconnected by screws, while the shield is additionally equipped with a second linear module, and in the linear modules there are single-pole circuit breakers of three machines or a three-pole circuit breaker enclosed in its own explosion-proof enclosure, and a three-pole input circuit breaker of the disconnector module is enclosed explosion-proof shell of the disconnector module, while in the shell of the linear modules there are working and protective zero tires and internal we ground connected with external ground terminal, in the shell of the connection module located terminals or terminal block for connection of external conductors, and the shells of linear modules and connection module are arranged to enter the cable glands of external cables.

Brief Description of the Drawings

Figure 1 is given a flap lighting explosion-proof, General view. Figure 2, the same section along aa.

Utility Model Implementation

Explosion-proof lighting panel consists of basic modules:

connecting module 1, module 2 of the disconnector, linear modules 3, 4, while each basic module consists of a housing 5 and a cover 6, interconnected by screws (not shown in Fig.), and in the shell of linear modules 3, 4 are placed single-pole automatic circuit breakers 7 each with three circuit breakers or a three-pole circuit breaker (not shown in FIG.) enclosed in its own explosion-proof enclosure 8, a three-pole input circuit breaker 9 enclosed in an explosion-proof enclosure 10 of module 2

a disconnector, while in the shell of the linear modules 3, 4 there are working and protective zero tires 11, 12 and internal ground clamps (not shown in Fig.), electrically connected to the external ground clamps 13, in the shell of the connecting module 1 there are a terminal block 14 or a block clamps 15 for connecting external conductors (not shown in Fig.), and on the shells of linear modules 3, 4 and connecting module 1 are cable entries 16, 17 for inputting external cables (not shown).

Explosion-proof lighting shield is operated as follows.

Shields are used to distribute alternating current with voltage of 380V, frequency of 50-60 Hz and direct current with voltage of 220V.

Degree of protection of shields against external influences IP65.

The shields are equipped with linear modules 3, 4 with single-pole circuit breakers in an amount of 3 to 12 with combined releases (not shown in Fig.) For a rated current of 16A, for a rated current of 25A and three-pole circuit breakers in an amount of 1 to 3 for a rated current of 25A cable entries 16, 17 for sealing cables with an outer diameter from 10 mm to 24 mm and a disconnector module 2 with a three-pole circuit breaker with a combined release (not shown in Fig.) for a rated current of 100A, as well as Yelnia unit 1 for input, and the seal joining two of four-supply cables and depending on the outer diameter equipped with:

- terminal block 14, designed for the pin connection of cable cores with a cross section of 10 to 36 mm ² and two cable entries 16, 17 for sealing cables with an outer diameter of 18 to 30 mm;

- terminal block 15, designed for the pin connection of cable cores with a cross section of 35 to 95 mm ² and two cable waters 16.17 for sealing cables with an outer diameter of 24 to 48 mm.

The proposed utility model in comparison with the prototype and other well-known technical solutions has the following advantages:

- high mechanical strength;

- withstanding explosion pressure;

- the exclusion of the transfer of the explosion into the environment;

- small dimensions and mass of the shield, not more than 40 kg.

Claims (1)

Explosion-proof lighting panel, consisting of basic modules: connecting, linear, disconnector module and not having a lead-out compartment, characterized in that the input circuit breaker is built directly into the flameproof enclosure of the disconnector module made of aluminum alloy, having high mechanical strength, withstanding explosion pressure and eliminating the transfer of the explosion into the environment, and the circuit breakers of the linear modules are enclosed in their own explosion-proof the shells made of thermosetting press material, having high mechanical strength, withstanding the pressure of the explosion and preventing the transfer of the explosion into the environment, are placed in the shells of linear modules made of antistatic material, which significantly reduces the size and weight of the shields, the design of the shield provides for use on outgoing lines not only of single-pole circuit breakers, but also of three-pole circuit breakers.