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Flange connection leakage early warning device

An early warning device and flange technology, which is applied in the direction of measuring the rate of increase and deceleration of the fluid, using liquid/vacuum degree for liquid tightness measurement, etc., can solve leakage, difficult monitoring and early warning of flange connection structure, loosening or pre-tightening Insufficient power and other problems, to achieve the effect of improving service life, reducing maintenance and shutdown times, and responding quickly and accurately

Inactive Publication Date: 2016-09-07
WUHAN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional bolted connections are prone to loosening or insufficient pre-tightening force under complex working conditions such as high temperature, high pressure, and vibration, and leakage occurs, and the traditional flange connection structure is difficult to monitor and give early warning after leakage occurs

Method used

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  • Flange connection leakage early warning device
  • Flange connection leakage early warning device
  • Flange connection leakage early warning device

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Embodiment Construction

[0014] In order to better understand the present invention, below in conjunction with embodiment and accompanying drawing, technical scheme of the present invention is described further (as Figure 1-3 shown).

[0015] A flange connection leakage early warning device, which includes a flange sealing system and a leakage protection early warning system;

[0016] The flange sealing system is mainly composed of a pair of metal clamps 2, the metal clamps 2 are semi-circular, and a groove with a rectangular cross section is opened on the inner side (that is, the cross section of the metal clamp 2 is "[" type), The pair of metal clamps 2 cooperate with each other to seal and hold the edge of the flange (the flange is composed of the upper flange 5, the lower flange 14 and the gasket 13) (that is, the edge of the flange is completely sealed. wrapped); the surface of the upper flange 5 and the lower flange 14 of the flange (that is, the upper surface of the upper flange 5 and the low...

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Abstract

The invention relates to a flange connection leakage early warning device which is characterized by comprising a flange sealing system and a leakage protection early warning system. The flange sealing system is mainly composed of a pair of metal hoops which are semicircular-ring-shaped, and the internal sides of the metal hoops are provided with grooves of which the cross sections are rectangular. The pair of metal hoops are mutually matched so as to clamp the edge of a flange in a sealing way. The leakage protection early warning system comprises a buffer tank which is provided with a pressure gauge, and a spherical valve is arranged at the bottom part of the buffer tank. An alarm device is also connected on the pressure gauge. The buffer tank is connected with one metal hoop in a communicating way through a leakage medium discharge channel. The device can be applied to the complex conditions of high temperature, high pressure and vibration and can maintain great sealing performance for a long time so that leakage of the flange can be effectively prevented, the leakage situation of the flange can be monitored in real time, the early warning device performs early warning to prompt personnel evacuation when leakage occurs, and the buffer tank is arranged to buffer leakage for time of personnel evacuation.

Description

technical field [0001] The invention relates to the field of flange sealing structures, in particular to a flange connection leakage warning device. Background technique [0002] The flange sealing structure is widely used in petrochemical industry because of its easy disassembly and assembly. According to statistics, there are tens of thousands of static sealing points in five sets of main devices, six sets of supporting devices and seven auxiliary workshops with an annual output of 30 trillion tons of ethylene in a large petrochemical plant. It is not appropriate to rely on manpower and enhanced patrols to protect and monitor the leakage of flanges in key parts of the entire plant. Because many fluids handled by chemical plants are flammable, explosive, toxic or corrosive working media, and usually have pressure and temperature, once leakage occurs, it will cause material loss and energy loss, resulting in environmental pollution, and production cannot be carried out norm...

Claims

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Application Information

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IPC IPC(8): G01M3/26
CPCG01M3/26
Inventor 郑小涛黄苏喻九阳林纬汪威徐建民王成刚
Owner WUHAN INSTITUTE OF TECHNOLOGY
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