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Device and method for identifying, calculating and detecting vacuum of condenser of power plant

A detection device and condenser technology, applied in vacuum gauges, measuring devices, measuring fluid pressure through electromagnetic components, etc., to achieve the effect of increasing the measuring range and improving the accuracy

Pending Publication Date: 2022-07-29
国电内蒙古东胜热电有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the influence of steam turbulence in the condenser on the measurement, the high temperature and high humidity environment of the measurement device and the shortcomings of the pressure fluctuation that affect the measurement accuracy of the device, a vacuum identification method for power plant condensers that matches the high temperature and high humidity environment is provided. Calculation detection device and method

Method used

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  • Device and method for identifying, calculating and detecting vacuum of condenser of power plant
  • Device and method for identifying, calculating and detecting vacuum of condenser of power plant
  • Device and method for identifying, calculating and detecting vacuum of condenser of power plant

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Effect test

Embodiment 1

[0029] A power plant condenser vacuum identification calculation and detection device, such as Figure 1-Figure 3As shown, it includes a pressure transmission housing 1, the pressure transmission housing 1 is fixedly installed on the condenser housing through a flange, the lower part of the pressure transmission housing 1 is provided with a first pressure-reducing cavity 101, and the upper part of the pressure transmission housing 1 A second decompression cavity 102 is opened, and a cooling cavity 103 is opened in the middle of the pressure transmission shell 1. The cooling cavity 103 communicates with the outside world through a number of communication holes, and the cooling cavity 103 cooperates with its communication holes for cooling the pressure transmission shell. The body 1 is cooled during operation, and a number of pressure pipes 2 are fixed circumferentially in the middle of the pressure transmission shell 1. The plurality of pressure pipes 2 are used to communicate t...

Embodiment 2

[0032] On the basis of Example 1, as image 3 and Figure 4 As shown, the pressure buffer transmission assembly includes a buffer piston 5, the buffer piston 5 is sealed and slidably arranged in the first pressure-reducing cavity 101, a limit cavity is set in the middle of the buffer piston 5, and the limit cavity of the buffer piston 5 is slidably provided with a sensor The pressure piston 6, the upper part of the limiting cavity of the buffer piston 5 is fixedly installed with a first pressure diaphragm 7, the cavity between the pressure sensitive piston 6 and the first pressure diaphragm 7 is set as a liquid environment, the pressure sensitive piston 6 and the first pressure The diaphragms 7 are filled with non-deformable liquid. The small amount of liquid deformation makes the pressure-sensing piston 6 have a larger displacement matching relationship when the first pressure diaphragm 7 has the same amount of change. The middle of the first pressure diaphragm 7 is arranged ...

Embodiment 3

[0038] On the basis of Example 2, as figure 1 As shown, it also includes a cooling shell 13, the cooling shell 13 is fixedly installed on the outside of the middle of the pressure transmission shell 1, the pressure pipe 2 is located in the cooling shell 13, and the middle and upper parts of the cooling shell 13 are circumferentially provided with several Since the hot air moves upward, the heat is dissipated to the outside through the middle and upper through holes of the cooling casing 13 , and a fan 14 is arranged on the right part of the cooling casing 13 .

[0039] Since the pressure transfer shell 1 is installed on the condenser, the internal working environment temperature of the condenser is relatively high, which will affect the measurement environment of the pressure measuring gauge 4. Therefore, the pressure transfer shell 1 is cooled by the cooling shell 13, The operator starts the fan 14 to work, the fan 14 blows the gas into the cooling shell 13, the flowing gas t...

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Abstract

The invention relates to the field of power plant auxiliary measuring instruments, in particular to a power plant condenser vacuum recognition calculation detection device and method. Technical problems to be solved are that steam turbulence in a condenser affects measurement, and a high-temperature and high-humidity environment and pressure fluctuation of a measurement device affect the measurement precision of the device. The invention provides a power plant condenser vacuum identification calculation detection device and method, and the device comprises a pressure transmission housing, the lower part in the pressure transmission housing is provided with a pressure buffer transmission assembly, and the upper part in the pressure transmission housing is provided with a pressure conversion transmission assembly. The influence of steam flow turbulence on pressure measurement is prevented through the first pressure transmission cavity, the pressure buffering transmission assembly is matched with transmission of pressure in the condenser and the first pressure transmission cavity in an induction mode, the pressure change in the second pressure transmission cavity is inducted through the pressure conversion transmission assembly, and the air pressure variation in the second pressure transmission cavity is transmitted through hydraulic change.

Description

technical field [0001] The invention relates to the field of auxiliary measuring instruments in power plants, in particular to a vacuum identification, calculation and detection device and method for a condenser of a power plant. Background technique [0002] The vacuum degree in the condenser is one of the most important indicators affecting the economy of the steam turbine generator set. During the working process of the condenser, adjusting and monitoring the appropriate vacuum degree in the condenser will affect the available enthalpy of the steam in the steam turbine. The reduction is reasonably controlled, so that the difference between the increase in the power of the steam turbine and the power consumption of the circulating water pump is the maximum value, so as to maximize energy saving and economy. [0003] When the existing vacuum pressure measuring instrument measures the vacuum degree of the condenser, because the inside of the condenser is a steam environment ...

Claims

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Application Information

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IPC IPC(8): G01L21/00G01L7/16G01L9/00G01L19/06
CPCG01L21/00G01L7/16G01L9/0089G01L19/0609
Inventor 武兴卓孙同敏任杰贺延枫赵俊杰杨如意沈跃军谢国峰张二祥王献文张越刘琳鸽赵璐邵戊辰赵伟张东明
Owner 国电内蒙古东胜热电有限公司
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