Contact Platform Support
Help CenterEnclosed Busbars Micro Positive Pressure Equipment Closed Busbar Micro Positive Pressure Hot Air Circulation Maintenance Device
Related Products
-
Wind Power Tube Busway for Wind Electricity GenerationUS$ 150 - 300MOQ: 10 Meters -
Common Box Enclosed Busway Common Enclosure BusUS$ 300 - 600MOQ: 10 Meters
-
Metal Isolated Phase Enclosed Bus Duct Busway for All Kinds of Power Plant Power Electricity GeneratationUS$ 400 - 700MOQ: 10 Meters
-
High Voltage hv Insulation Tube Bus Duct for Power Transmission for Substation or Distribution Center TransformerUS$ 100 - 300MOQ: 10 Meters
-
Power System Air-Insulated Insulated High Conductivity Compact Busway Busbar Bus Duct Airy Insulative Busway Dedicated Dense Closed Busway Dense Insulated Busway Compact Insulated Busduct Trunking System BTS Compact Insulated Busbar TrunkingUS$ 5 - 100MOQ: 10 Meters
Enclosed busbars micro positive pressure equipment
Closed busbars micro positive pressure device
Purpose and function of using closed busbar micro positive pressure device
1.Purpose: To improve the overall healthy operation level of the bus duct.
2.Function: The device generates a micro positive pressure inside the shell of the phase-isolated busbar slightly higher than the outside atmosphere, so that moisture, dust, salt mist, etc. in the outside can not enter into the shell of the phase-isolated busbar, so that working environment of the insulator, the shell and the conductors is always kept clean and dry. So as to ensure and improve the insulation strength of the bus duct to ensure safe and reliable operation.
It Prevents the impact of temperature changes. Breathing effect on the busway will be happened for the busbars in the north, hot and humid, and coastal areas due to changes in operating and shutdown temperatures and changes in day and night and seasonal temperature differences. The humid air with dust and smoke will enter into the busbar housing to reduce the insulation strength of the closed busbar, and bring hidden dangers to safe operation.
In summary, in order to improve the overall healthy operation level of the closed busway, a micro-positive pressure device should be put into operation. This device requires a certain air tightness of the closed busbar casing to ensure the positive pressure inside the busbar casing. Poor air tightness of the closed busbar casing will cause frequent or long-term operation of the device and increase energy loss and device failure rates.
Main technical parameters
No. |
Name |
Parameters |
1 |
Power supply voltage |
3 phase 4 wire |
2 |
Control cabinet power |
|
3 |
Air compressor power |
5.5KW (air compressor configuration according to 0.6 cubic meters) |
4 |
Air supply |
|
5 |
Input pressure |
0.45-0.6Mpa |
6 |
Output pressure |
0-2KPa |
7 |
Output air dew point |
-40℃~80℃ (intake air temperature |
8 |
Use environment (indoor) |
Temperature 1 ℃-40℃, relative humidity |
9 |
Cabinet size (length x width x height) |
85*85*150 |
10 |
Cabinet weight |
100KG |
Micro positive pressure device supporting equipment
Air source: (Must use oil-free air compressor or install oil filter before the device)
Oil-free air compressor: provide air source for the device
Air tank
……
Closed busbar
Micro positive pressure hot air circulation maintenance device
When the generator stops and the bus duct stops power transmission, the temperature of the air in the busbar decreases to its corresponding dew point temperature, dew condensation will occur. Even local freezing in the transformer side busbar for cold areas with a large temperature difference between day and night. This will seriously affect the safe operation of the busbar. In order to prevent dew condensation and freezing, the closed busbar micro positive pressure hot air circulation maintenance device operates the hot air maintenance function when the generator is stopped and the busbar stops transmitting power. It uses highly dry hot air to replace the air in the busbar, and quickly reduces the relative humidity of the air in the busbar, improve the insulation level of the equipment in the busbar, ensure the safety and success rate of re-inputting of the closed busbar for power transmission. And run the micro positive pressure air filling function when the generator is starting and the busbar is transmitting. The automatic operation of the hot air maintenance function is controlled by a humidity meter. When the humidity meter detects that the relative humidity of the air in the closed busbar has reached the setting value or higher, the micro positive pressure hot air circulation maintenance device automatically input the hot air maintenance function. When the relative humidity of the air drops below the setting value, the device automatically stops the hot air maintenance function. When the generator is starting and the busbar is transmitting, the micro-positive pressure inflation function automatically runs, and the micro-positive pressure function is automatically controlled by the humidity meter and time controller.
Closed busbar air circulation drying device
The air circulation drying device is a new type of moisture-proof& anti-dew condensation device for the closed busbar, which can completely avoid the occurrence of wet& dew condensation inside the isolated enclosed bus duct, and effectively improve the operating safety of the generator set. It is an ideal upgrade and replacement product of a moisture-proof & anti dew device such as micro positive pressure device and hot air maintenance device, the device can be applied to new nuclear power, thermal power, hydropower units and reconstruction projects.
Working principle
The air circulation drying device takes the relative humidity of the air inside the busbar as the evaluation index. When the relative humidity value is higher than the setting value, the device automatically puts into operation, and the dry air enters the busbar from the phase A and C shells of the busbar through the connecting pipe. After entering phase B at the end of each circuit, it enters into the device, and after drying, it returns to the phase A and C shells of the busbar, forming a closed-loop drying system, which effectively improves the air dryness inside the busbar and prevents condensation from occurring. Each end of the circuit is provided with a dry air flow adjustment device to ensure the drying effect of each circuit. After the drying device is put into operation, the dew point of the air in the busbar can be maintained at about -30℃. The drying device is provided with two adsorption cylinders, one for adsorption, one for regeneration, and alternate conversion, and the conversion time is 6 to 8 hours.
Intelligent common box enclosed bus duct
Dust removal and dehumidification device
Considering the heat dissipation factor, the common enclosure bus has a less tightness requirements, which does not exceed IP54, and generally does not consider to use the micro-positive pressure technology.
Intelligent common box enclosed bus duct dust removal and dehumidification device is divided into two types: outdoor rainproof type and indoor installation type. The outdoor rainproof type adopts rain proof structure of outdoor box transformer, it is suitable for 50m to 100m length outdoor enclosure bus dust and dehumidification. The indoor installation type is suitable for common enclosure bus with outdoor length of less than 50 meters. It is connected to the outdoor through pipes. It can automatically start dehumidification and drying on the eve of condensation on the insulator, and automatically stop drying when the humidity decreases. It is especially suitable for frequent start and stop, coastal or wet areas with lots of rain. When the rainy season comes, the outside humid air enters the busbar with the air, and even water ingress of the outdoor busbar in the rainstorm weather. Humid air has high relative humidity and large water content, which is easy to be the water condensation on the bus shell and insulators. The equipment in the common box enclosed busway is designed according to indoor standards and is prone to discharge short circuits, which will seriously affect the safe operation of the busbar. For power plants with large changes in the temperature difference between day and night, if there is a strong wind, the air contains a large amount of dust, the sand in the outdoor busway will increase, and the pollution level will increase. In foggy weather, the relative humidity of the air will increase, and the temperature of the outdoor busway at night will decrease. Dew condensation may occur on insulators of outdoor busbar, which will seriously affect the safe operation of the bus.
Send Inquiry to This Supplier
You May Also Like
-
Long Lifetime Low Voltage Power Distribution Copper and Aluminum Insulation Insulated Shell High Conductivity Compact Sandwich Lighting Illumination Busbar Busway Trunking SystemUS$ 2 - 150MOQ: 100 Meters
-
High Quality Insulated Resin Epoxy Casting BuswayUS$ 5 - 200MOQ: 100 Meters
-
Arc Suppression Coil Extinction Coil Arc-Extinguish Coil Peterson CoilUS$ 888 - 5000MOQ: 1 Set
-
Arc Suppression Coil Complete Set Neutral Point Grounding Protection EquipmentUS$ 5000 - 100000MOQ: 1 Set
-
High Quality Neutral Point Grounding Resistance Resistor Cabinet Cubicle Complete Set Neutral Point Earthing Protection Equipment For Transformer GeneratorUS$ 8000 - 80000MOQ: 1 Set
-
Oil-Immersed Adjustable Reactor Fully Completely Sealed Oil-Immersed Oil-Filled ReactorUS$ 1666 - 8666MOQ: 1 Set
-
Dry Magnetic-Shielding Shunt Reactor Dry Magnetic-Shielding Series Reactor Dry Semi-Core Series Reactor Dry Semi-Core Shunt ReactorUS$ 1000 - 5000MOQ: 1 Set
-
High Voltage HV Dry Type Air-Cored Air Core Series Reactor for 6kv 10kv 35kv Power System for Reactive Power Compensation Ckgkl 6-35kv Dry Air-Core Flat Wave Reactor Dry Air-Core Phase Controlled ReactorUS$ 3000 - 5000MOQ: 1 Set
-
Bksc High Voltage Dry Iron-Core Iron Core Shunt Reactor 10000V 10kvar 6% Shunt Reactor Tank Filter Harmonic Reactor Fixed InductorUS$ 1666 - 2888MOQ: 1 Set
-
Qksc (G) Series Epoxy Casting Dipping High Voltage Starting Start-up Reactor Inductor for AC Asynchronous MotorUS$ 1500 - 2500MOQ: 1 Set
