Year1
- 品牌：
- 上海川诺
- 型号：
- PXK
- 额定电流：
- 10A~1000A
There is no better, only the best
Shanghai Chuannuo explosion-proof electrical manufacturer has successfully built a well-known brand in the explosion-proof electrical industry with its good reputation and image. . . . The following mainly introduces to you the relevant information about Shanghai Chuannuo explosion-proof electrical left and right explosion-proof distribution boxes and explosion-proof positive pressure cabinets
1. Scope of application
This product is suitable for chemical industry , offshore drilling platforms, metallurgy, medicine, light industry, textile, food, bioengineering, aerospace engineering and military industry and other explosive gas or dust environments, as a three-phase four-wire system (
) AC low voltage Electrical power distribution system power supply or monitoring and control of testing instruments, analytical instruments, monitors, microcomputer touch screens, high-power frequency converters and other components.
Suitable for dangerous places in
and
districts.
Suitable for explosive gas environments of
,
,
categories and temperature group
.
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 a positive pressure chamber and an auxiliary chamber. The positive pressure The user's power distribution system components are installed in the cavity, and the automatic control system is installed in the auxiliary cavity.
Cabinet-type products adopt
cabinet frames, with the main and auxiliary panels having left and right structures, cable trench seat 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 hung-type installation, 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
~
Usually the instrument air average at the user site is Requirements can be met.
The steel plate material is generally
cold-rolled steel plate, and
stainless steel can also be selected according to user requirements.
4. Function description
Series of positive pressure cabinets
The product is equipped with a ventilation chain. Before the product is put into operation, it can only be ventilated through the inner cavity of the main panel and achieve the specified ventilation. After time and air exchange, make sure 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 chamber to ensure that the electrical components have been effectively isolated by clean media when the product is put into operation.
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 automatically alarms, opens the air intake, and automatically adjusts the internal air supply. When the air supply is successful, it automatically returns to normal. If it fails, 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
~
~
~
Believe in our products, believe in our services, believe in our quality. Our purpose is to serve you, provide you with better products, and make you feel more at ease. . . . 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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