A dynamic and static coupling sealing control method and device thereof

Abstract

The invention provides a dynamic and static coupling seal control method and device. A pump is provided with a dynamic and static coupling seal device. The dynamic and static coupling seal device comprises a static seal device body and a dynamic seal device body, wherein the static seal device body is composed of a static movable sealing ring and a static fixed sealing ring, and the dynamic seal device body is composed of a dynamic movable sealing ring and a dynamic fixed sealing ring. By adoption of the dynamic and static coupling mode, dynamic sealing under normal running condition of the pump and static sealing under the condition of shutdown of the pump are achieved. When the pump runs, axial force acts on a rotor and pulls the rotor to move axially. By controlling the pretightening force provided by the axial force of the rotor through a balance hole and an opening loop, closing and separation of the static sealing ring and the dynamic sealing ring are achieved, optimized design parameters are provided specific to the normal running condition and the shutdown condition, and the sealing performance of the sealing device is improved. The dynamic and static coupling seal controlmethod and device has the advantages that the practicability is high, the method is simple, and the precision is high.

Description

technical field [0001] The invention belongs to the field of pump sealing, in particular to a dynamic-static coupling sealing control method and a device thereof. Background technique [0002] The parts that play a sealing role are called seals or sealing devices, referred to as seals. The main functions of the sealing device are: 1. Prevent the liquid or gas inside the machine from leaking from the joint surface of the two parts. 2. Prevent the intrusion of external impurities and dust and maintain the necessary environment for the normal operation of the mechanical parts. The degree of sealing performance is directly related to the working quality and service life of a machine, so it is necessary to choose a reasonable sealing device. In some occasions, the reliability of sealing performance is particularly important, such as the sealing of aircraft or spacecraft, the sealing of poisonous gas, poison storage tanks, flammable and explosive gas storage tanks, etc. [0003]...

AI Technical Summary

Problems solved by technology

[0004] However, for specific occasions, serialized sealing devices cannot meet the requirements, and the sealing effect is poor. For this reason, the present invention provides a dynamic and static coupling sealing control method and its device, which can be applied to some special chemical pump seals.

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