Flange for connecting conveyer pipe

Abstract

A port flange of a delivery pipe relates to a part for connecting the delivery pipe, particularly a flange for connecting the delivery pipe. The invention provides a port flange which can be conveniently dismounted, slowly changed in diameter, and suitable for connecting a threaded port tubular product with a port flanging tubular product. The port flange comprises a body, and a central through hole processed on the body, wherein the two ends of the body are provided with flanges, and bolt holes are arranged on the flange.

Description

technical field [0001] The invention relates to a fitting for connecting delivery pipes, in particular to a flange for connecting delivery pipes. Background technique [0002] At present, there are generally three ways to connect the conveying pipes: 1. Direct welding: direct welding should be carried out at the installation site. Generally, a series of processes such as trial assembly, welding, welding slag removal, and pickling must be carried out. It is inconvenient to disassemble after installation. , and the welding quality is not easy to check. 2. Pipe joint connection: generally suitable for small-diameter delivery pipes, usually with welded pipe joints, ferrule-type pipe joints, flared pipe joints, etc. These methods are all connected by threaded connections made on the joint body and the pipe. High precision is required, the assembly process is complicated, the pipe is easy to be damaged, and the cost is high. 3. Flange connection: Reliable work, easy assembly and...

AI Technical Summary

Problems solved by technology

[0002] At present, there are generally three ways to connect the conveying pipes: 1. Direct welding: direct welding should be carried out at the installation site. Generally, a series of processes such as trial assembly, welding, welding slag removal, and pickling must be carried out. It is inconvenient to disassemble after installation. , and the welding quality is not easy to check

2. Pipe joint connection: generally suitable for small-diameter delivery pipes, usually with welded pipe joints, ferrule-type pipe joints, flared pipe joints, etc. These methods are all connected by threaded connections made on the joint body and the pipe. High precision is required, the assembly process is complicated, the pipe is easy to be damaged, and the cost is high

3. Flange connection: Reliable work, easy assembly and disassembly, but it is often necessary to weld or cast flanges at the port of the delivery pipe, which requires high manufacturing precision and increases costs

This flange connection device has the following disadvantages: if the diameters of the two conveying pipes are different, especially if the difference is large, when the fluid flows through the joint surface of the two conveying pipes, the diameter will suddenly change, the energy will change suddenly, and it will be easily damaged Conveying pipes and flange devices, and it is easy to form a local increase in resistance coefficient, so it is not suitable for variable diameter connection of conveying pipes

In addition, the general flange connection device is not suitable for the connection of the delivery pipe with the port flanging

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