Unlock instant, AI-driven research and patent intelligence for your innovation.

Diameter-variable bent pipe and pipeline arrangement connection method utilizing same

A connection method and pipeline layout technology, applied in the direction of pipes/pipe joints/fittings, elbows, siphons, etc., to achieve the effects of improving flexibility, improving seismic performance, and reducing costs

Active Publication Date: 2019-07-12
CHINA NUCLEAR POWER ENG CO LTD
View PDF15 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the above-mentioned similar situation, the use of traditional variable diameter head and elbow cannot meet the above requirements at the same time. Therefore, it is urgent to design an integrated connection scheme of variable diameter elbow in this field to reduce the use of pipe fittings and the number of welds, and save layout. space, and can adjust the direction of the pipeline while connecting pipelines of different diameters, equipment and instruments

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Diameter-variable bent pipe and pipeline arrangement connection method utilizing same
  • Diameter-variable bent pipe and pipeline arrangement connection method utilizing same
  • Diameter-variable bent pipe and pipeline arrangement connection method utilizing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] This embodiment provides a variable-diameter elbow, which can be applied to process pipelines of nuclear power plants. Such as figure 1 and figure 2 As shown, the reduced-diameter elbow includes: the first straight pipe section 1, the bent pipe section 2, the reduced-diameter section 3 and the second straight pipe section 4 connected in sequence, and the outer diameter of the first straight pipe section 1 and the second straight pipe section 4 diameter is different. All pipe sections of the reducing elbow are integrally formed.

[0037] Of course, in order to facilitate product production, the outer diameter of the first straight pipe section 1 is the same as that of the bent pipe section 2, and the outer diameter of the bent pipe section 2 is also the same as the outer diameter of one end of the variable diameter section 3, and the other end of the variable diameter section 3 The outer diameter of is identical with the outer diameter of the second straight pipe sec...

Embodiment 2

[0052] This embodiment provides a pipe layout and connection method using the reducing elbow described in Embodiment 1, which can be applied to the connection process of pipes and equipment with a diameter of 2" or less to solve the problem of traditional piping with a diameter of 2" or less In the connection, it is difficult to connect and install equipment and pipes with different diameters in a limited layout space.

[0053] The pipe layout and connection method includes: a preliminary design process of the variable diameter elbow, a layout design process of the variable diameter elbow, and a mechanical verification process of the variable diameter elbow. Combine below image 3 Describe in detail.

[0054] Such as image 3 As shown, the pipeline arrangement and connection method specifically includes the following steps S101 to S103.

[0055] S101. Preliminary design of the variable-diameter elbow: According to the layout space of the variable-diameter elbow, and the ang...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a diameter-variable bent pipe. The diameter-variable bent pipe comprises a first straight pipe segment, a bent pipe segment, a diameter-variable segment and a second straight pipe segment which are sequentially connected, and the first straight pipe segment is different from the second straight pipe segment in outer diameter; and all the pipe segments of the diameter-variable bent pipe are formed integrally. Correspondingly, a pipeline arrangement connection method utilizing the diameter-variable bent pipe is provided. The steering function of a pipeline is achieved while diameter-variable connection among pipelines with different outer diameters, equipment and instruments is achieved, the arrangement flexibility of nuclear power pipelines is improved effectively, the pipeline arrangement space is saved, the length of the pipelines is decreased, and the cost is lowered; and meanwhile, the number of weld seams at the diameter-variable segment of the pipeline is decreased, pipeline stress distribution is improved, the seismic performance of the pipelines is improved, the pipeline on-site prefabricated welding workload is decreased, and the pipeline on-site mounting efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of pipeline design and application, in particular to a reduced-diameter elbow and a pipeline layout and connection method utilizing the reduced-diameter elbow. Background technique [0002] Due to the special safety requirements of nuclear power plant process piping, it has a redundant process piping system and complex piping layout. At the same time, due to the compact space of the piping layout of the nuclear power plant building, some pipelines have high anti-seismic requirements, so increased Difficulty in piping layout design, fabrication and welding. [0003] For pipes with a diameter less than or equal to 2", socket welding is often used to connect pipe fittings. If a 90-degree turn is required between two connection points, and there is a diameter change, when using the traditional connection method, A socket weld elbow and a socket weld reducing joint are required, and 6 welds are required to compl...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): F16L43/00
CPCF16L43/00
Inventor 赵丹峰徐国飞吴永重李涛杜广许克凤陈昊阳王凯张蕊刘刚
Owner CHINA NUCLEAR POWER ENG CO LTD