Pre-stressed steel cylinder concrete conveying pipe used for ferrous nitrate

Abstract

The invention provides a pre-stressed steel cylinder concrete conveying pipe used for ferrous nitrate. The pre-stressed steel cylinder concrete conveying pipe comprises a base pipe. The external wall of the base pipe is provided with a concrete layer which is internally provided with pre-stressed steel wires which are annually wound. The concrete layer is also externally wrapped by a cement slurry sand layer. The pre-stressed steel cylinder concrete conveying pipe is characterized in that the internal wall of the base pipe is provided with a pure zinc coating layer which is coated by a plastic coated layer. The plastic coated layer is epoxy resin. Thickness of the plastic coated layer is 10-20mm. The pure zinc coating layer and the plastic coated layer are additionally arranged at the internal wall of the pipe so that conveying performance is greatly enhanced and corrosion can be effectively prevented.

Description

technical field [0001] The invention relates to the field of ferrous nitrate reaction systems, in particular to a delivery pipe for ferrous nitrate. Background technique [0002] The yield strength of steel pipes currently used to transport pressurized fluids is low. Therefore, when it is necessary to manufacture steel with high compressive strength [0003] When the pipe is used, it is necessary to design the wall of the steel pipe to be very thick to meet the purpose of conveying pressure fluid. [0004] However, the disadvantages of thickening the steel pipe are also obvious. For example, the thickening of the steel pipe wall will increase the amount of steel used to produce each steel pipe and increase the cost of raw materials; for example, the thickening of the steel pipe wall will increase the weight of the steel pipe. , the difficulty of transportation and construction will increase. In addition, steel is a product with high energy consumption and high emissions. T...

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Problems solved by technology

[0004] However, the disadvantages of thickening the steel pipe are also obvious. For example, the thickening of the steel pipe wall will increase the amount of steel used to produce each steel pipe and increase the cost of raw materials; for example, the thickening of the steel pipe wall will increase the weight of the steel pipe. , the difficulty of transportation and construction will increase

In addition, steel is a product with high energy consumption and high emissions. The increase in usage will inevitably lead to a large consumption of energy, especially the consumption of non-renewable resources, which is also very inconsistent with the current trend of energy conservation and environmental protection.

[0005] In the market, the above problems are solved by setting a concrete layer on the inner wall of the steel pipe, but the rough surface of the concrete will cause it to fall off after long-term erosion, and the transportation efficiency is low. In the pipeline transportation of ferrous nitrate, the concrete layer is easy to Corroded, affecting the service life, needs to be improved

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