Drum type compensator for main pipe of coke oven gas and manufacturing method thereof

Abstract

The invention relates to a drum type compensator for a main pipe of coke oven gas. The drum type compensator comprises a 1# arc plate 1, a 2# arc plate 2, a 3# arc plate 3 and annular vertical plates 4, and is characterized in that the 1# arc plate 1, the 2# arc plate 2 and the 3# arc plate 3 are same in shape and have same radian of 120 degree; spaced ripples 8 are arranged on a middle part of each arc plate along a direction parallel to an arc edge; after the straight edges of adjacent arc plates are welded together, a cylinder is formed; spaced annular ripples are formed on a middle section of a side wall of the cylinder; two end faces of a cylinder shell are respectively welded with the annular vertical plates 4; the inner diameter of the annular vertical plates 4 is matched with the outer diameter of the main pipe 9 of the coke oven gas; a bleeder threaded head 5 and a reserved bleeder threaded head 6 are respectively arranged on a side wall of the cylinder shell; and symmetrical with the bleeder threaded head 5 and the reserved bleeder threaded head 6, a reserved nitrogen pipe threaded head 7 is arranged on the side wall of the cylinder shell. The drum type compensator can prevent a serious accident caused by gas leakage after a compensator for the main pipe of coke oven gas has a leakage point. The production safety can be ensured.

Description

technical field [0001] The invention belongs to the field of on-line maintenance of compensators. Background technique [0002] In my country, the coke oven gas main network in iron and steel metallurgical enterprises is mostly designed as a ring network, which has the advantages of stable transmission and distribution mode, and a single user maintenance has little impact on the main ring network. However, as one of the main arteries in the dynamic medium, it is generally There is a long operation period, and there is no opportunity to completely shut down the gas for maintenance, resulting in successive corrosion of gas pipelines and auxiliary facilities, which has become a major problem for iron and steel enterprises. [0003] CO in gas composition 2 , O 2 After dissolving in water, it will cause corrosion to equipment. In actual production and maintenance, blast furnace gas and converter gas are less corrosive to equipment, while coke oven gas and mixed gas with a larger...

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Problems solved by technology

[0005] 1. After the plugging operation of the coke oven gas main pipeline drum compensator, although the gas leakage is temporarily avoided, the compensator itself is affected by thermal expansion and contraction, and there is a possibility of gas leakage again

[0006] 2. The materials used in the plugging operation are all temporary solutions. If the present invention is not carried out, the phenomenon of repeated plugging will easily occur, and the potential safety hazards of the equipment cannot be completely dealt with

[0007] 3. Traditional plugging and repair welding methods are prone to gas poisoning, fire and other safety hazards

[0008] 4. The laying of gas pipelines is mostly parallel to the road. When there is a leak in the overhead gas pipeline, the concentration of carbon monoxide will gradually increase around it, posing a threat to the safety of surrounding personnel;

[0009] 5. If the gas leaks are not dealt with in time, the erosion of the gas and the corrosion of the facilities will intensify, and eventually the entire gas pipeline network will have to be shut down. Not only will the gas users have to stop production and cooperate, causing serious economic losses, but also the civil gas users will be interrupted. The normal gas supply has a huge impact on the operation of the entire city gas system

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