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Crescent ribbed branch pipe

A ribbed bifurcated pipe and crescent technology, which is applied in the field of water conservancy and hydropower engineering, can solve problems such as the thickness of bifurcated pipes, and achieve the effects of reducing peak stress, reducing pipe wall thickness and saving steel consumption.

Pending Publication Date: 2018-01-16
POWERCHINA ZHONGNAN ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During design, the thickness of the pipe is often designed according to the calculated stress value, so that it is within the safe strength range. Due to the large stress value, the designed bifurcation pipe is often thicker

Method used

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  • Crescent ribbed branch pipe
  • Crescent ribbed branch pipe
  • Crescent ribbed branch pipe

Examples

Experimental program
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Effect test

Embodiment Construction

[0021] Such as Figure 4~5 As shown, a crescent rib bifurcation pipe includes a pipe body 1 and a crescent rib 2 arranged on the pipe body 1 . A rigid support rod 3 is fixed between the two ends of the crescent rib 2 . The outer surface of the support rod 3 is provided with an anti-corrosion coating.

[0022] The intersection of the support rod 3 and the pipe body 1 is welded with a reinforcement plate 4 , and the reinforcement plate 4 is made of the same material as the pipe body 1 .

[0023] There are many forms of the support rod 3, in order to minimize the influence on the flow state of the water flow, a specific structural form is, for example Image 6 As shown, the support rod 3 includes a shuttle-shaped main rod 31 and cylindrical heads 32 located at both ends of the shuttle-shaped main rod 31 , and the main rod 31 and the cylindrical head 32 are integrally formed.

[0024] During construction, a hole is opened at the intersection of the intersecting lines of the for...

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Abstract

The invention discloses a crescent ribbed branch pipe which comprises a pipe body and a crescent rib disposed on the pipe body. Rigid supporting rods are fixedly arranged between two ends of the crescent rib, and the intersection of the supporting rods and the pipe body is sealed. According to the crescent ribbed branch pipe, the problem of stress concentration of an intersection of a branch forkand an intersecting line is effectively solved, peak stress of the branch pipe structure is greatly reduced, the pipe wall thickness of the whole branch pipe is reduced, and the steel usage amount isreduced.

Description

technical field [0001] The invention belongs to the field of water conservancy and hydropower engineering, and in particular relates to a crescent rib bifurcation pipe. Background technique [0002] Penstock is an integral part of water delivery buildings in water conservancy and hydropower projects. The branch pipe is generally located at the end of the pressure pipe, the internal water pressure is relatively high, the structural stress and hydraulic conditions are complex, mainly including three-beam branch pipe and crescent rib branch Structural types such as pipe, spherical bifurcation pipe, beamless bifurcation pipe and edge bifurcation pipe, among which the inner reinforced crescent rib bifurcation pipe has good water flow pattern, small water head loss, clear force, small cavern excavation section, and support It is easy to install and other features, and has been widely used in the underground pipes of large and medium-sized conventional and pumped storage power stat...

Claims

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Application Information

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IPC IPC(8): F16L41/02
Inventor 王增武刘昌桂赵路张战午胡旺兴刘吟琪
Owner POWERCHINA ZHONGNAN ENG
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