Determination of the size of the sealing groove and the sealing ring
The goal of the design is to meet both the sealing and heat dissipation requirements of the chassis. Let's introduce the dimensions of the production drawings to everyone to discuss their rationality with the peers. The outer portion is oversized to create a conduction heat resistance between the two plates. The small size of the exposed part is small, coupled with the processing error and deformation, so that the sealing performance is not guaranteed. Thermal requirements. Appropriately improving the flatness and smoothness of the mounting surface of the traveling wave tube and the flatness and smoothness of the sealing surface 1 The purpose of improving the flatness and smoothness of the mounting surface of the traveling wave tube and the sealing surface is to reduce the thermal resistance and improve the sealing performance. To improve how much is appropriate, we give an empirical data for reference. The flatness of the mounting surface of the traveling wave tube and the sealing surface is 0.08. The smoothness of the mounting surface of the traveling wave tube and the sealing surface.
Installation requirements for traveling wave tube 1) First check if the flatness of the traveling wave tube mounting surface is 0.08, and if it does not meet the requirements, re-grind it. 2) Apply thermal grease between the traveling wave tube and the heat sink, but do not apply too much. After coating, the traveling wave tube is placed on the heat sink for several times, and the traveling wave tube is tightened after the thermal grease is even. 3) After installation, the clearance between the traveling wave tube and the heat dissipation plate should be <0.1.4. The thermal grease should be properly stored in the normal time. It should not be too dry or infiltrated. Installation of the fan At present, there are two types of installation on the production drawing: the first is that the fan collects the air from the side of the traveling wave tube; the second is the blowing of the power supply. The test proved that the first type of installation is better than the second. However, if the fan can be blown obliquely along the traveling wave tube, the effect is better. The main problem with the first two installations is that the wind blown by the fan can only be partially circulated, and the wind is not far from the fan, which increases the temperature gradient inside the cabinet.
The function of the elevator traction system is to output and transmit power to drive the elevator. It is mainly composed of traction machine, traction wire rope, guide pulley and reverse sheave. The towing machine provides power for the operation of the elevator, which is composed of motor, towing wheel, coupling, reducer and electromagnetic brake. Both ends of the pulling wire are connected to the lift car and counterweight respectively, and the lift car is driven up and down by the friction between the wire rope and the pulling wheel. The guide wheel is used to separate the space between the lift car and the counterweight. The use of compound winding type can also increase the drag force. Professional Elevator Traction System manufacturer is located in China, including Traction Elevator System,Traction Lift System,Traction Elevator, etc.
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