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A method for manufacturing and installing a pressure-stabilizing and damping body of a penstock steel pipe

A technology of penstock and installation method, which is applied in the direction of manufacturing tools, auxiliary devices, and ship lifting devices, and can solve problems such as noise and vibration of water delivery pressure pipes and valves on them, so as to achieve smooth and safe movement in place, and is conducive to dispersal Effects of simple loads and structures

Inactive Publication Date: 2019-03-19
CHINA GEZHOUBA GRP MECHANICAL & ELECTRICAL CONSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem solved by the present invention is to provide a method for manufacturing and installing a pressure-stabilizing and vibration-damping body of a penstock steel pipe, which solves the problems of manufacturing and installing the pressure-stabilizing and vibration-damping body in the prior art, as well as the noise and vibration problems of the water delivery pressure pipeline and its upper valves

Method used

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  • A method for manufacturing and installing a pressure-stabilizing and damping body of a penstock steel pipe
  • A method for manufacturing and installing a pressure-stabilizing and damping body of a penstock steel pipe
  • A method for manufacturing and installing a pressure-stabilizing and damping body of a penstock steel pipe

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Effect test

Embodiment 1

[0046] Such as Figure 1-2 As shown, a penstock steel pressure stabilizing and damping body includes a shell 14, an inner support beam system 15 that is located in the shell 14 and welded to the inner wall of the shell 14, and welded to the shell 14. Outer wall and grid-shaped outsourcing beam system 16; the top of the housing 14 is provided with a ventilation hole 20, and the downstream side of the housing 14 is provided with a water outlet communicating with the inner cavity of the housing 14. Three water inlets communicating with the inner cavity of the housing 14 are equidistantly arranged on the upstream side of the housing 14, and the inner support beam system 15 is in the form of a grid and has four columns, which are equidistantly distributed in the housing 14, and are all arranged along the water flow direction in the housing 14. The three water inlets are respectively connected to the water inlet steel pipes through three water filling valves 18, and the water outle...

Embodiment 2

[0049] Such as Figure 1-6 As shown, a method for manufacturing and installing a penstock steel pressure stabilizing and damping body, the manufacturing and installing method divides the described pressure stabilizing and damping body into several sub-block manufacturing units, and completes assembly, construction, transportation in the form of sub-block manufacturing units and hoisting, welding and connecting the sub-block manufacturing units in the lock chamber, completing the integral welding of the pressure stabilizing and damping body, and then installing through pipes, and finally welding and connecting with the water delivery pressure steel pipes and branch pipes.

[0050] The manufacturing and installation method specifically includes the following steps:

[0051] Step 1: Design division of block manufacturing units: using computer three-dimensional assisted analysis to divide the voltage stabilizing and damping body into six block manufacturing units;

[0052] Step 2...

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Abstract

The invention discloses a manufacturing and mounting method of a voltage stabilization vibration damping body for a pressure steel pipe. The problems of the vibration of a water transmission pressure pipeline and an upper valve of the water transmission pressure pipeline are solved and the difficulties of complicated voltage stabilization vibration damping body structure, large size, heavy weight and difficulty in manufacturing and mounting are overcome. The voltage stabilization vibration damping body for the pressure steel pipe comprises a shell, an inner support beam system welded with the inner wall of the shell and an outer coating beam system welded with the outer wall of the shell. The manufacturing and mounting method disclosed by the invention comprises the steps: dividing the voltage stabilization vibration damping body into a plurality of blocking manufacturing units; finishing assembly construction, transportation and suspension in a form of blocking manufacturing; welding and connecting the blocking manufacturing units in a gate chamber to complete integrated welding of the voltage stabilization vibration damping body; then mounting in a pipe penetrating manner; finally, welding and connecting the voltage stabilization vibration damping body with the water transmission pressure pipeline and a branched bifurcated pipe.

Description

technical field [0001] The invention belongs to the technical field of installation of penstock steel pipes, and relates to a method for manufacturing and installing a pressure steel pipe pressure stabilizing and damping body of a hydropower station. Background technique [0002] With the construction of more and more hydropower projects, the penstock water delivery system is widely used. In order to solve the problem of multi-branch aggregated water delivery, the penstock is often equipped with a branch branch structure. When the pressurized water flow in the steel pipe converges to the branch pipe, due to the pressure pulsation and flow state changes of the converging water, it is easy to cause cavitation cavitation and large vibration noise of the pressure steel pipe and pipeline valves, seriously affecting the water delivery steel pipe and pipeline The operation of the valve is safe. [0003] Therefore, a new type of penstock steel pressure stabilizing and damping body...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02C5/00
CPCB23K31/02B23K37/00
Inventor 莫文华吉勇崔慧丽程建文
Owner CHINA GEZHOUBA GRP MECHANICAL & ELECTRICAL CONSTR
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