Method for preassembling impact type water distribution ring pipe

A water distribution ring and impact type technology, which is applied in the fields of hydroelectric power generation, hand-held tools, climate sustainability, etc., can solve the problem of low versatility of installation, and achieve the effect of improving work efficiency, good general performance, and reducing labor intensity

Active Publication Date: 2021-11-19
CHONGQING WATER TURBINE WORKS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for pre-installing the impact water distribution ring to solve the problem of low versatility in installation

Method used

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  • Method for preassembling impact type water distribution ring pipe
  • Method for preassembling impact type water distribution ring pipe
  • Method for preassembling impact type water distribution ring pipe

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0025] Such as figure 1 , figure 2 and image 3 As shown, a method for pre-installing the impact water distribution ring, specifically includes the following steps:

[0026] Step 1. Plan the pre-installation site: the site is equipped with ground rails, and T-nut installation grooves are installed on the ground rails to facilitate the topping, pressing and fixing of the position and shape of the ring pipe in the later stage;

[0027] Step 2. Preparation and scribing: prepare 6 sets of 5-thread high-precision (within 5-meter error less than 2mm) laser levels, 1 set of leveling instruments, several jacks of different sizes as needed (more than ten), 50 pieces of backing plates and wedges each ( can be borrowed and recycled), and several auxiliary scales 7; a center of circle is set in the middle of the field, and the jet pitch circle 11 of the runner is drawn according to the center of the circle. The center line of the nozzle flange 2 is tangent to the jet pitch circle 11 o...

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Abstract

The invention relates to the technical field of water turbine mounting, and discloses a method for preassembling an impact type water distribution ring pipe. The method comprises the following steps of: planning a site; conducting site scribing, specifically, setting a circle center on the site, scribing a runner jet flow pitch circle according to the circle center, scribing mounting position lines of spray pipe flanges respectively, and extending the position lines of the spray pipe flanges, wherein the extension lines of every two adjacent spray pipe flanges intersect at one point; placing a laser gradienter at the circle center to preassemble and correct the axis point of the water distribution ring pipe, and placing the laser gradienter at the intersection points of the extension lines of the spray pipe flanges; hoisting the water distribution ring pipe into the site, and placing the water distribution ring pipe to a corresponding planned position; and conducting preassembling. The method is suitable for preassembling water distribution ring pipes of impulse water turbines with different nozzle numbers and different models, and the universality is good; and the cost is less than thousand yuan, and the cost reduction effect is huge.

Description

technical field [0001] The invention belongs to the technical field of water turbine installation, in particular to a method for preinstalling an impact type water distribution ring pipe. Background technique [0002] The water distribution ring pipe is the buried part of the water turbine. The water distribution ring pipe can be divided into many sections according to the convenience of assembly. Among them, the six-nozzle structure water distribution ring pipe is divided into four sections. It is very difficult to process and pre-assemble in practice. The following is the six-nozzle structure four Take the pipe section as an example. Generally, the water distribution ring pipe is divided into four sections. The first section includes the inlet flange and No. 1 nozzle flange, the second section includes No. 2 nozzle flange and No. 3 nozzle flange, and the third section includes Nozzle No. 4 Flange and Nozzle No. 5 Flange, Section 4 includes Nozzle No. 6 Flange. [0003] At...

Claims

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Application Information

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IPC IPC(8): B25B27/00
CPCB25B27/00Y02P70/50
Inventor 谢泽胜徐川沂杨天林
Owner CHONGQING WATER TURBINE WORKS
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