High-performance electrical isolation flange device resisting high temperature and high pressure

Abstract

The invention discloses a high-performance electrical isolation flange device resisting high temperature and high pressure. The high-performance electrical isolation flange device comprises a pair of isolation pressure-bearing flanges, wherein the isolation pressure-bearing flanges are interconnected, an isolation spacer is arranged on the connecting part of the isolation pressure-bearing flanges, a cooling-water runner is arranged on more than one isolation pressure-bearing flange, and the cooling-water runner is arranged near the isolation spacer; and preferably, the high-performance electrical isolation flange device also comprises a pair of pressure-bearing flanges with necks, wherein the pressure-bearing flanges with necks are respectively connected to two ends of the isolation pressure-bearing flanges. According to the high-performance electrical isolation flange device resisting high temperature and high pressure, the temperature of the isolation sealing surface of the flanges is effectively reduced, meanwhile the isolation effect is monitored in real time through arranging an isolation spacer temperature monitoring port, the heat loss of high-temperature and high-pressure fluid in isolation pressure-bearing flange tubes is effectively reduced by adopting a heat sleeve design, and thus the isolation pressure-bearing flanges can be effectively used for a long time under the condition with the fluid pressure greater than 30MPa and the fluid temperate greater than 550 DEG C in the tubes.

Description

technical field [0001] The invention relates to a novel insulating flange device, in particular to a high-performance electric insulating flange device resistant to high temperature and high pressure. Background technique [0002] In the fields of chemical industry, material manufacturing, biopharmaceutical, and nuclear energy, it is often necessary to isolate the direct current pipeline through which the fluid flows from the non-electric pipeline to achieve pipeline insulation and prevent electrochemical corrosion. Usually insulating flanges can be used to achieve this purpose, but in metal pipes where high-temperature and high-pressure fluids (temperature higher than 300°C and pressure higher than 18MPa) flow, due to the strong thermal conductivity of metal materials, conventional insulating gaskets in insulating flanges such as asbestos Gaskets, etc. are often prone to gasket damage, resulting in insulation failure; at the same time, high temperature and high pressure flu...

AI Technical Summary

Problems solved by technology

Usually insulating flanges can be used to achieve this purpose, but in metal pipes where high-temperature and high-pressure fluids (temperature higher than 300°C and pressure higher than 18MPa) flow, due to the strong thermal conductivity of metal materials, conventional insulating gaskets in insulating flanges such as asbestos Gaskets, etc. are often prone to damage to the gasket, resulting in insulation failure; at the same time, the damage to the insulation gasket can also cause high-temperature and high-pressure fluid leakage

[0003] Existing insulating flanges, such as the Chinese Patent Publication No. CN2185831 utility model titled "a heat-resistant insulating flange" discloses a kind of insulating flange, by increasing the design of the flange plate and the stepped structure of the flange surface to achieve The purpose of high temperature and high pressure, but under relatively harsh conditions (for example, fluid temperature 550 ° C, pressure 30 MPa), the insulating gasket cannot withstand high temperature, which will still lead to loss of insulation and sealing effect

[0004] Another Chinese patent announcement number CN 2046171 U utility model titled "High Voltage Insulating Flange" discloses a high-voltage insulating flange, which can withstand high pressure by increasing the design of concave and convex surfaces, but this invention does not solve the problem of fluid pressure at high temperature. The problem of failure under certain conditions, the insulating gasket cannot withstand high temperature, will still lead to the loss of insulation and sealing effect

[0005] Therefore, the insulating gasket of the insulating flange in the prior art cannot withstand high temperature, which leads to loss of insulation and sealing effect

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