A waterproof and anti-corrosion construction method for pressure pipes used in hydropower stations
A technology for pressure pipelines and construction methods, which is applied in pipeline anti-corrosion/rust protection, pipeline damage/wear prevention, pipeline protection, etc., and can solve problems that affect pipeline safety, high internal water pressure, and threats to plant safety.
Inactive Publication Date: 2018-03-13
杜玮 +7
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Problems solved by technology
Because the hydropower station uses pressure pipes to concentrate most or all of the water head of the hydropower station, the pipeline layout is generally steep, the internal water pressure is high, and it also bears the impact of dynamic water pressure, and it is close to the factory building. Once damaged, it will seriously threaten the safety of the factory building.
However, the pressure pipelines used in hydropower stations are usually exposed to the outside for a long time, and they will be damaged by corrosion and corrosion, which will affect the safety of the pipelines.
Method used
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Embodiment Construction
[0020] The invention provides a waterproof and anti-corrosion construction method for pressure pipes used in hydropower stations, which is characterized by comprising the following steps:
[0021] Step 1, processing the pressure pipe 1 of the hydropower station, and sandblasting the steel pipe to form a rough surface;
[0022] Step 2, welding a plurality of shearing nails 2 on the surface of the pressure pipeline 1 after sandblasting, the shearing nails 2 are welded on the steel pipe in the circumferential direction, and the height of the shearing nails 2 is 3cm-5cm; Along the longitudinal direction of the steel pipe, multiple rows of shear nails are arranged, and the spacing of each row of shear nails is 1m;
[0023] Step 3, coating the anti-corrosion layer 3 on the pressure steel pipe after welding the shear nails 2;
[0024] Step 4: Coating a waterproof layer 4 on the anti-corrosion layer 3, the ratio of the thickness of the waterproof layer 4 to the thickness of the anti-...
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The invention provides a waterproof and anti-corrosive construction method for a pressure pipe for a hydropower station. Through effective treatment on the pressure pipe in the nine steps of sand blasting, welding of shear nails, coating of an anti-corrosive layer, coating of a waterproof layer and the like, sealing and protection functions for the pressure pipe are realized, the waterproof performance and anti-corrosive performance of the pressure pipe are improved, the safety performance of the pressure pipe is improved, and the service life of the pressure pipe is prolonged.
Description
technical field [0001] The invention relates to a construction method for a pressure pipeline, in particular to a waterproof and anti-corrosion construction method for a pressure pipeline used in a hydropower station. Background technique [0002] The pressure pipeline refers to the tubular equipment used to transport gas or liquid by using a certain pressure. The pressure pipeline for hydropower station usually refers to the pipeline that transports water from the reservoir, pressure fore tank or surge chamber to the turbine. Because the pressure pipelines used in hydropower stations concentrate most or all of the water head of the hydropower station, the pipelines are generally arranged with steep slopes, the internal water pressure is large, and they are also subjected to the impact of dynamic water pressure. The pressure pipelines used in hydropower stations are usually exposed for a long time, and will be damaged by corrosion and corrosion, which affects the safety of t...
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IPC IPC(8): F16L9/14F16L58/02F16L57/00
CPCF16L9/14F16L57/00F16L58/02
Inventor 杜玮王守恒田颖超牛文成柴文胜李庆腾飞李冰
Owner 杜玮