Use of back column winch explosion-proof and explosion-proof devices

Release time:2019-09-30

The use of the explosion-proof and explosion-proof device of the column winch, the selection of high-quality internal structure of the column winch explosion-proof motor, and the external environment prevention work to create a safe working environment, safe production is our common goal. For the explosion-proof system of the back column winch, it is divided into two parts: the external explosion-proof internal explosion-proof. The back-line winch itself has corresponding explosion-proof devices, including explosion-proof motors, explosion-proof electromagnetic starters, explosion-proof control buttons and other equipment explosion-proof devices. The external explosion-proof of the column winch is the environmental explosion-proof work, providing you with the best quality mining winch, providing the most intimate winch after-sales service, so that you can buy the rest assured and comfortable.
Internal explosion-proof device: National standard GB3836 for explosion-proof electrical equipment (except mine general type, the national standard for mining general type is GBl2173). The design, manufacture and inspection of all explosion-proof electrical equipment should be based on this standard.
Explosion-proof electrical equipment: An electrical device with a flameproof enclosure, called an explosion-proof electrical device. The outer casing is capable of withstanding the explosive pressure generated by the explosion of the explosive gas mixture inside it, and prevents the explosive product from passing through the flameproof gap to ignite the explosive mixture around the outer casing.
Explosion-proof motor overview: Explosion-proof motors use an explosion-proof enclosure to separate electrical parts that may generate sparks, arcs, and hazardous temperatures from the surrounding explosive gas mixture. However, the outer casing is not sealed, and the surrounding explosive gas mixture can enter the inside of the motor through the joint gap of each part of the outer casing.
Explosion may occur when it comes into contact with an ignition source such as a spark, an arc, or a dangerous high temperature in the casing. At this time, the flameproof casing of the motor is not damaged or deformed, and when an explosion flame or hot gas is transmitted through the gap of the joint surface, It also does not ignite the surrounding explosive gas mixture.
The basic series of low-voltage flameproof motor products widely used in China is YB series flameproof three-phase asynchronous motor, which is a derivative of Y series (IP44) three-phase asynchronous motor. The explosion-proof performance complies with the provisions of GB3836.1-83 "General requirements for explosion-proof electrical equipment for explosive atmospheres" and GB3836.2-83 "Explosion-proof electrical equipment for explosion-proof electrical equipment." The motor power range is O.55-200kW. The corresponding frame number range is 80-315nun for the center of the frame, and the explosion-proof marks are dI, dIIAT4, dIIBT4, which are applicable to the underground mine fixed equipment or factory IIA, IIB, and the temperature group is T1—T4. A place where an flammable gas or an explosive mixture of vapor and air forms.
External explosion protection:
(l) For Class I locations, is explosives, primers, firing agents, pyrotechnics storage and black powder manufacturing, storage and storage, electrical equipment should not be installed. In special cases, only the motor control buttons and monitoring labor are allowed. The selection of the instrument shall comply with the explosion-proof requirements of the electrical equipment of the E-class hazardous area; when the production equipment adopts the electric drive, the electric motor shall be installed in a non-hazardous place, and the partition wall shall be adopted; the electric lighting shall be installed on the outer wall of the building. Spotlights in the outdoor.
(2) For Class II sites, that is, places where primers, firing drugs, and pyrotechnics are manufactured, the surface temperature of electrical equipment shall not exceed 120 °C, and shall comply with the relevant provisions of explosion-proof electrical equipment; sealed explosion-proof type, explosion-proof type, Positive pressure type or explosion-proof oil-filled type, intrinsically safe type, increased safety type (lights and control buttons only).
(3) For Class III sites, ie physical and chemical analysis of finished product test stations, sealed, waterproof and dustproof equipment should be used.

Off-Road Electric Winches