1. Definition of straight seam steel pipe pressure pipe: By definition, straight seam steel pipe pressure pipe should include all straight seam steel pipe pipes that use pressure to transport gas or liquid. From the point of view of production, it follows the name of a straight seam steel pipe pressure vessel, so it is not a pressure pipeline in a simple sense. The possibility of accidents and the harmfulness of accidents define the scope of straight seam steel pipe pressure pipes. my country (Decree No. 373 of the State Council) has clarified the scope of straight seam steel pipe pressure pipes and stipulated the definition of straight seam steel pipe pressure pipes. The pressure used in pressure pipes, tubular equipment used to transport gas or liquid, as a liquid medium with a temperature higher than or equal to the standard boiling point, and a pipe with a nominal diameter greater than 25mm. Straight seam steel pipe pressure equipment, in addition to causing its explosion, may also cause explosions and fires due to medium leakage. It is very important to ensure the operation of straight seam steel pipe pressure pipelines, so our country, like many others, lists boilers as special equipment for supervision.
2. The role of straight seam steel pipe pressure pipe: straight seam steel pipe pressure pipe is an important part of the production process, its main function is to use the pressure, as well as the role of distribution, metering, control, and cutting off the flow medium. The pressure pipe is like the blood vessels in the human body.
3. Application of straight seam steel pipe pressure pipeline: transportation is listed as the five major transportation industries along with railway, highway, water transportation, and shipping. Straight seam steel pipe pressure pipes are more and more widely used in the chemical industry, petroleum, electric power, metallurgy, city gas and heating systems, high temperature, corrosive, toxic, and radioactive media are important tasks, and the number of straight seam steel pipe applications occupies an important position. Straight seam steel pipe pressure pipelines are widely used. Since the folks have been in the state of divisional management, each link of straight seam steel pipe manufacturing, installation, inspection, operation management, etc. has its system, and the technology is different. Straight seam steel pipe pressure Compared with straight seam steel pipe boilers and straight seam steel pipe pressure vessels, the management of pipelines tends to be more perfect in laws, regulations, and standards.
4. The specific composition of the straight seam steel pipe pressure pipeline: the working temperature of the straight seam steel pipe is the temperature of the pipe under normal operating conditions, the design temperature of the pipe is in the normal operation process, and the straight seam steel pipe can be set under the corresponding design pressure. The pipeline is composed of straight seam steel pipe, pipeline support, and so on. Used to transport, distribute, control, or stop fluid flow. The piping system, referred to as the piping system, is a plurality of pipes divided according to the fluid design conditions. Pipeline components, also known as pressure pipe components, are flanges, gaskets, tight fittings, valves, and special pipe parts used to connect or assemble pipes.
In addition, after the straight seam steel pipe pressure pipeline is put into use, to detect the transverse or longitudinal defects of the weld seam of the LSAW straight seam steel pipe, the jet (water column) coupling is used for wave flaw detection along the entire length of the weld. The jet (water column) wave flaw detection is coupled between the probe and the steel pipe through the jet, so that the longitudinal wave sound beam emitted by the probe is incident into the steel pipe through the water or steel interface, and the pure shear wave flaw detection is performed on the weld seam of the steel pipe through waveform conversion. Therefore, to realize pure shear wave flaw detection in the weld, the incident angle of the probe is between the critical angle I and the critical angle II, which can be obtained by the law of refraction.
Post time: May-12-2023