Nitrogen sealing device

A nitrogen sealing and nitrogen technology, applied in the sealing, packaging, engine components and other directions of the engine, can solve the problems of external leakage of harmful and flammable gases, personal casualties, accidents, etc., to prevent spontaneous combustion and explosion, easy assembly and disassembly, and simple structure Effect

Active Publication Date: 2012-09-12
HUBEI YIDU YUNJI MEC & ELEC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the flammable liquefied coal powder and harmful flammable gas reach a certain concentration, they will explode when they touch sparks, causing accidents; the harmful flammable gas leaks outside, and when the staff enters the area, it will cause personal injury and death accidents

Method used

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  • Nitrogen sealing device
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Examples

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Embodiment Construction

[0012] Such as figure 1 with figure 2 As shown, a nitrogen sealing device includes a packing seat 1, a cover plate 2 connected to the packing seat 1 through a compression bolt 5, an oil nozzle 9 is provided on the packing seat 1, an oil-immersed The packing 8 and the stuffing seat 1 are provided with a plurality of inflatable rings 4 , and the air intake pipe 3 is connected with the inflatable rings 4 .

[0013] The number of said inflatable rings 4 is two.

[0014] The inflatable ring 4 is filled with nitrogen.

[0015] The nitrogen pressure is 0.01-0.03 MPa higher than the gas pressure in the tank.

[0016] A nitrogen sealing device is installed at the driving end and the tail rotating shaft of the screw conveyor, and the nitrogen sealing device is fixed on the casing at both ends of the screw conveyor, and the two inflatable rings 4 are installed between the packing seat 1 and the rotating shaft 7 . The outer annular groove of the inflatable ring 4 is aligned with the...

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Abstract

The invention discloses a nitrogen sealing device. An inflation ring filled with nitrogen with certain pressure is arranged in an oil-immersed packing between a filler holder and a rotating shaft, thereby preventing the inflammable liquefied coal powder and harmful inflammable gas in a groove from leaking and further achieving the purpose of sealing; moreover, the nitrogen is inert gas, thereby effectively preventing the inflammable liquefied coal powder and harmful inflammable gas from self-igniting and exploding. The invention has the advantages of high sealing performance, high safety, simple structure and convenient assembly and disassembly.

Description

technical field [0001] The invention relates to a sealing device in a conveyor, in particular to a nitrogen sealing device. Background technique [0002] In order to break through the oil dilemma, my country intends to realize the industrialization of "coal-to-oil" on the basis of digesting and absorbing foreign coal direct liquefaction technology, and has implemented a number of projects. During the heating and gasification transportation of raw coal, a sealed explosion-proof tubular screw conveyor is used for transportation. The casing is filled with flammable liquefied coal powder and harmful flammable gas. The particle size of liquefied coal powder is about 5 μm, and the harmful gas It is easy to leak outward through the gap between the driving end of the screw conveyor and the tail rotating shaft and the casing. When the flammable liquefied coal powder and harmful flammable gas reach a certain concentration, they will explode when they touch sparks, causing an accident...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16J15/40B65G33/24
Inventor 辛祖善吕平姚景友向绪杰
Owner HUBEI YIDU YUNJI MEC & ELEC CO LTD
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