Test Method for Identifying Leakage in Steam Turbine Governor Valves
A speed-regulating valve and steam turbine technology, which is applied in the testing of machine/structural components, fluid tightness testing, measuring devices, etc., can solve the problem of increasing the maintenance workload, inability to determine the main valve, the main valve group or the regulating valve Group leakage and other problems, to achieve the effect of improving valve maintenance efficiency and valve maintenance efficiency
Active Publication Date: 2018-03-02
STATE GRID HUNAN ENERGY SAVING SERVICE +3
View PDF5 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0012] During the test, the main valve or the adjustment valve test will often fail. According to the valve tightness test method, it can only be judged that there is leakage in the main valve group or the adjustment valve group. When the main valve tightness test fails, only Judging whether there is leakage in the high-pressure main steam valve or the medium-pressure main steam valve, it is impossible to judge which main steam valve is causing the leakage
When the valve tightness test fails, it can only be judged that there is leakage in the high-pressure valve or the medium-pressure valve, and the specific leakage valve cannot be identified
When disassembling, inspecting and overhauling the steam valve, because the tightness test cannot identify a single leaking valve, it is necessary to check the leaking valve group, which increases the workload of overhauling
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0032] The present invention will be further described below in conjunction with accompanying drawing.
[0033] see figure 1 , the test method for identifying the leakage of steam turbine speed regulating valve provided by the present invention includes the first high pressure main valve TV1, the second high pressure main valve TV2, the first medium pressure main valve RSV1, the first medium pressure main valve RSV2 , the first high-voltage regulating gate GV1, the second high-voltage regulating gate GV2, the third high-voltage regulating gate GV3, the fourth high-voltage regulating gate GV4, the first medium-voltage regulating gate IV1, the second medium-voltage regulating gate IV2, the third medium-voltage regulating gate IV3 and the fourth medium-voltage regulating gate Tone IV4, its test method comprises the following steps:
[0034] The technical solution for judging the leakage of a single main steam valve is:
[0035] Step 1: Judge the tightness of the main steam valv...
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
Login to View More Abstract
The invention discloses a test method for identifying the leakage of a speed regulating valve of a steam turbine, including a high-pressure main steam valve, a high-pressure regulating valve, a medium-pressure main steam valve and a medium-pressure regulating valve, including a technical scheme for judging the leakage of a single main steam valve and judging the main steam valve Corresponding to the leakage technical scheme of the control valve group, a single leaking main valve or control valve can be identified, and the maintenance can be targeted, and the maintenance efficiency will be greatly improved. The invention is aimed at the unqualified condition of the steam valve tightness test of a thermal power plant, can identify a single leaking main steam valve and the corresponding speed-regulating valve group of the main steam valve, and greatly improve the efficiency of steam valve inspection and identification of steam turbine speed-regulating valves Leak test method.
Description
technical field [0001] The invention aims at the unqualified tightness of the main steam valve and the regulating valve of the steam turbine in the thermal power plant, and identifies the leakage of a single main steam valve or the corresponding regulating valve group of the main steam valve through the test method, which is beneficial to improving the efficiency of steam valve maintenance. Background technique [0002] When the steam turbine runs for the first time, after the major technical transformation of the speed control system, and after the overhaul of the steam turbine, the tightness test of the main steam valve and the control valve should be carried out in accordance with the requirements of the "Test Guidelines for Steam Turbine Regulation and Control System" (DL / T 711). The test method is: [0003] 1) Main steam valve tightness test [0004] The unit maintains normal operation at 3000r / min, starts the AC auxiliary oil pump, and starts the oil pump at high pres...
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
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G01M3/00
Inventor 程贵兵李明张柏林韩彦广曹浩
Owner STATE GRID HUNAN ENERGY SAVING SERVICE