Indoor ventilation system of transformer substation and design method thereof

The invention provides a design method of an indoor ventilation system of a transformer substation. The ventilation system comprises at least one of the following devices: an air inlet, a heat radiator, an air outlet and a cooling fan. The design method comprises the following steps of: firstly, setting boundary conditions, wherein the boundary conditions at least comprise one of the following parameters: the heat flow boundary of the heat radiator, the effective area and the inlet air temperature of the air inlet and the air quantity of an exhaust fan; simulating at least one ventilation system physical model by using CFD (Computational Fluid Dynamics) according to the boundary conditions; analyzing the simulation results of the ventilation system physical model through the CFD; and determining the optimal ventilation system physical model according to the simulation results. The invention also provides an indoor ventilation system designed by the design method. In the invention, the reasonableness ...

Thermostat device for substation

Provided is a thermostat device for a substation. Heat generated during the running of a transformer inside a transformer chamber is emitted indoors, and the temperature of indoor air rises; high-temperature gas enters a heat exchange mechanism; low-temperature water serves as a refrigerant for the heat exchange mechanism, the released heat is partially absorbed by the low-temperature water, and the high-temperature gas becomes low-temperature gas; the low-temperature gas is discharged out of the heat exchange mechanism and is in contact with the surface of the transformer, and forced convection heat exchange is performed on the surface of the transformer; the low-temperature gas absorbs the heat emitted by the transformer again to become the high-temperature gas, the high-temperature gas enters the heat exchange mechanism to perform cooling, and the circulation is performed; the low-temperature water of the heat exchange mechanism becomes high-temperature water after absorbing the heat ...

Swing

Power transmission and transformation project intelligent design review system based on CAD drawing element recognition technology

The invention provides a power transmission and transformation project intelligent design review system based on a CAD drawing element recognition technology, and relates to the technical field of CAD drawing recognition. The power transmission and transformation project intelligent design review system based on the CAD drawing element recognition technology comprises a cloud server module, the cloud server module comprises an uploading module, an automatic detection module, an automatic recognition module, a database module and a comparison and analysis module, the uploading module is connected with the automatic detection module, and the automatic recognition module is connected with the database module. The automatic detection module is connected with an automatic identification module, the automatic identification module is connected with a database module, and the output end of the database module is electrically connected with a comparison and analysis module. Through cooperation ...

Bead welding wire for welding hot-work die

The surfacing welding rod is a iron-based alloy containing (wt%):C 0.4-1.2%, Cr 2-10%, Mo 2-6%, Ni 0.3-5%, V 1-5%, Si 0.5-2.0% and Mn 0.2-2%. Its production processes may include double smelting in medium-freq induction stove, electroslag purification, forging, hot-rolling and drawing or include smelting in medium-freq stove, horizontal continuous casting under argon protection and computer control and once drawing.