A dry gas sealed self-cooling structure and method

A dry gas sealing, self-cooling technology, applied in the direction of machine/engine, leakage prevention, mechanical equipment, etc., can solve the limited temperature tolerance of flexible plastic sealing ring, can not meet the application requirements of supercritical carbon dioxide turbine high temperature conditions, etc. problem, to achieve the effect of solving the dynamic sealing problem
CN111706405BActive Publication Date: 2021-11-30NUCLEAR POWER INSTITUTE OF CHINA
13 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NUCLEAR POWER INSTITUTE OF CHINA
Publication Date
2021-11-30

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention provides a dry gas sealed self-cooling structure and method, including a moving ring, a static ring, a push ring and a spring seat that cooperate with each other, and the spring seat is provided with several rows of internal cooling micro-ring holes from the inside to the outside in the radial direction. Each column of inner cooling micro-annular holes includes several rows of inner cooling micro-annular holes arranged along the width direction of the spring seat. Cooling micro-annular hole matrix, wherein the inlet of the internal cooling micro-annular hole matrix is ​​connected to the upstream high-pressure sealed isolation gas connection and the outlet is connected to the downstream atmosphere, forming a micro-porous cooling channel through the upstream and downstream of the dry gas seal. Methods The above dry gas seal self-cooling structure is used to cool the dry gas seal. The invention fully utilizes the process and conditions of the dry gas seal in its normal working process, effectively controls the working temperature of the key sealing gasket of the dry gas seal, and raises the operating temperature of the dry gas seal to above 600°C.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the technical field of sealing device structures, and more specifically, to a dry gas sealing self-cooling structure and method. Background technique

[0002] The supercritical carbon dioxide power generation system is a Brayton cycle system using supercritical carbon dioxide as the working medium. The cycle process is as follows: first, the supercritical carbon dioxide is boosted by the compressor; Heating; secondly, the working medium enters the turbine to drive the turbine to do work, and the turbine drives the motor to generate electricity; finally, the working medium enters the cooler to return to its original state, and then enters the compressor to form a closed cycle. Among them, when the temperature of carbon dioxide reaches 31.10C and the pressure reaches 7.38MPa, it will become a supercritical state. Its special physical characteristics of low gas viscosity and high liquid density make it have good fluidity, high hea...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More