Year1
- 防护等级：
- IP65
- 规格：
- 可按要求定制
- 额定电流：
- 10A~1000A
series of explosion-proof positive pressure cabinets, high-quality explosion-proof positive pressure cabinets,
explosion-proof positive pressure cabinets, Shanghai explosion-proof positive pressure cabinets,
explosion-proof positive pressure cabinet manufacturers, specializing in the production of various There are various types of explosion-proof positive pressure cabinets. The explosion-proof positive pressure cabinets have different designs according to the needs of customers. In Shanghai Chuannuo explosion-proof positive pressure cabinet manufacturer, there is always an explosion-proof positive pressure cabinet that suits you. If you have the opportunity, you can come to our explosion-proof positive pressure cabinet. Take a look at the pressure cabinet factory. Our explosion-proof positive pressure cabinets. The quality, shape, structure, color and design of our explosion-proof positive pressure cabinets will definitely satisfy you. Below, we will introduce the Shanghai Chuannuo explosion-proof positive pressure cabinet manufacturer in detail. Specific instructions for explosion-proof positive pressure cabinets.
1. Scope of application
This product is suitable for chemical industry, offshore drilling platform, metallurgy, medicine, light industry, textile, food, bioengineering, aerospace engineering and military industry, etc. In explosive gas or dust environments, it can be used as a three-phase four-wire (
) AC low-voltage electrical distribution system to supply power or to components such as detection instruments, analytical instruments, monitors, microcomputer touch screens, and high-power inverters. monitoring and control.
Suitable for hazardous locations in
and
districts.
Applicable to
,
,
categories, the temperature group is
Explosive gas environment.
Indoor and outdoor installation.
2. Explosion-proof principle
Explosion-proof measures using medium to isolate the ignition source. That is, the electrical components used by the user are installed in a cabinet filled with positive pressure clean gas, so that the flammable and explosive mixed gases in the external environment cannot come into contact with the sparks or dangerous temperatures generated by the electrical components during normal operation. To achieve the purpose of electrical explosion-proof.
3. Product Features
This product is mainly composed of a cabinet, automatic control system, gas distribution system, alarm system, and power distribution system. The cabinet is composed of positive pressure It consists of a cavity and an auxiliary cavity. The positive pressure cavity contains the user's power distribution system components, and the auxiliary cavity contains the automatic control system.
Cabinet-type products adopt
cabinet frames, the main and auxiliary panels are left and right structures, cable trench seat type installation, lower cable entry, front door operation, and rear door inspection.
The box-type product adopts a high-quality steel plate welded structure. The main and auxiliary disks are upper and lower structures. They are installed in a hanging type, with lower cable entry, front door operation and maintenance.
The piano table type product is made of high-quality steel plates that are folded and welded. The main and auxiliary plates have front and rear structures, seat-type installation, lower cable entry, piano table operation, and rear door maintenance.
According to the air intake method, it is divided into ventilation type and compensation type. The ventilation type provides uninterrupted and continuous air supply. The working heat of the components in the positive pressure cavity can be taken away with the air path. It has good heat dissipation function and is suitable for solving the heat dissipation problem of high-power explosion-proof inverters. The compensation type provides intermittent air supply. The positive pressure chamber must have good sealing performance to ensure low air consumption.
The user must provide a gas source, which is required to be purified air or nitrogen. The gas source pressure is
br/> ~
br/> Usually the instrument at the user's site Wind can meet the requirements.
The steel plate material is generally
cold-rolled steel plate, but
stainless steel can also be selected according to user requirements.
4. Function description
Series positive pressure cabinets
The product is equipped with a ventilation chain. Before the product is put into operation, it can only go through the main After the inner cavity of the disk is ventilated and the specified ventilation time and volume are reached, ensure that the flammable and explosive gases are blown out of the main disk before the auxiliary disk can receive power and start to detect the air pressure of the main cavity to ensure that when the product is put into operation, Electrical components have been effectively isolated by clean media.
Only when the air pressure in the main disk cavity meets the specified air pressure requirements, the automatic power switching system in the secondary disk will send power to the main cavity.
The working air pressure in the main disk cavity is
.
When the air pressure is higher than
, the automatic control system automatically closes the air inlet or opens the exhaust valve, and automatically adjusts the internal air pressure to ensure that the product is not deformed and damaged due to the impact of high air pressure.
When the air pressure is lower than
, the automatic control system will automatically alarm, open the air intake, and automatically adjust the internal air supply. When the air supply is successful, it will automatically return to normal. If it is unsuccessful, it will automatically return to normal. When the internal air pressure drops to
, the system can be set to automatically power off if necessary.
The secondary disk automatic control system monitors continuously and displays various pressure parameters in the main disk cavity.
5. Main technical parameters
Explosion-proof mark
Protection level
Working pressure
Air source pressure
~
~
br/> ~
Believe in our products, believe in our services, believe in our quality, our purpose is to serve you, to You provide better products, giving you more peace of mind. . . We feel more comfortable. . . . The left and right type explosion-proof distribution boxes and explosion-proof positive pressure cabinets supplied by Shanghai Chuannuo are the best. . . .
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