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Design of a water level measurement system for a pressure stabilizer to cope with rapid pressure relief conditions

A technology for water level measurement and system design, which is applied to display liquid level indicators through pressure measurement, reactors, nuclear engineering, etc. It can solve problems such as poor measurement accuracy, inability to isolate containers and capillaries to obtain a continuous and stable reference water level, etc. The effect of simplicity and convenience, reducing errors, and reducing the difficulty of installation and maintenance

Active Publication Date: 2022-07-01
NUCLEAR POWER INSTITUTE OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a design of a pressurizer water level measurement system for rapid pressure relief conditions, to solve the problem that continuous and stable reference water levels cannot be obtained through condensation containers, isolation containers and capillary tubes under rapid pressure relief conditions, and to measure The problem of poor accuracy, obtaining a continuous and stable reference water level, greatly improves the measurement accuracy

Method used

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  • Design of a water level measurement system for a pressure stabilizer to cope with rapid pressure relief conditions
  • Design of a water level measurement system for a pressure stabilizer to cope with rapid pressure relief conditions

Examples

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Effect test

Embodiment 1

[0027] like figure 1 As shown in the figure, a design of a water level measurement system for a pressurizer to deal with a rapid pressure relief condition, including several redundant measurement channels for measuring the water level of the pressurizer 1, and the redundant measurement channels include a water level measurement channel for steam condensation, It also includes a pressure transmitter 4 and a temperature measuring instrument 11, the pressure transmitter 4 is used to measure the pressure of the voltage stabilizer, and the temperature measuring instrument 11 is used to measure the condensed water after the condensed metal hose 6 condenses the steam. temperature.

[0028] In this embodiment, the condensing metal hose 6 is a 1 / 2 OD" condensing metal hose, and the condensing metal hose 6 forms a condensing ring. The condensing ring can play a similar role as a condensing container, and can also play the role of an expansion ring; In addition, the condensing metal hos...

Embodiment 2

[0030] like figure 1 As shown, this embodiment is further limited on the basis of Embodiment 1, and also includes the upper pressure-taking joint 7, the lower pressure-taking joint 8, and the pressure-inducing pipe 2 arranged on the voltage stabilizer 1. The condensation metal The two ends of the hose 6 are respectively connected with the upper pressure-taking joint 7 and one end of the pressure-inducing pipe 2, and the end of the condensing metal hose 6 connected with the pressure-inducing pipe 2 is the outlet end, and the other end of the pressure-inducing pipe 2 is connected to the outlet. The lower pressure-taking joint 8 is communicated through a pipeline.

[0031] It also includes an upper root valve 9 and a lower root valve 10 for controlling the opening and closing of the upper pressure-taking joint 7 and the lower pressure-taking joint 8 respectively.

[0032] Further, the pressure transmitter 4 is arranged near the interface of the pressure-inducing pipe 2 and the c...

Embodiment 3

[0039] like figure 1 As shown, each measurement channel includes a pressure transmitter 4 , a differential pressure transmitter 3 , a temperature measurement instrument 11 and a secondary measurement signal processing device 5 . The high pressure side of the differential pressure transmitter 3 is connected to the lower root valve 10, and the low pressure side of the differential pressure transmitter 3 is connected to a section of 1 / 2OD" condensing metal hose 6 behind the pressure pipe 2 of the upper root valve 9, and forms a condensation ring .

[0040] The secondary measurement signal processing device 5 receives the signals from the pressure transmitter 4, the differential pressure transmitter 3 and the temperature measuring instrument 11 to calculate the water level.

[0041] The calculation process of the water level measurement of the voltage stabilizer:

[0042] First of all, under cold working conditions (about 25°C, for example: 25°, 23°, 26°, etc.), after the instru...

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Abstract

The invention discloses a design of a pressure regulator water level measurement system for responding to rapid pressure relief conditions, comprising several redundant measurement channels for measuring the water level of the pressure regulator, and the redundant measurement channels include condensed metal used for steam condensation A hose, further comprising a pressure transmitter and a temperature measuring instrument, the pressure transmitter is used to measure the pressure of the pressure stabilizer, and the temperature measuring instrument is used to measure the temperature of the condensed water after the condensed metal hose condenses the steam; The condensing metal hose replaces the functions of the condensing container, the isolation container and the capillary, and the condensing metal hose is used to condense the steam. The installation is simple and convenient, which greatly reduces the difficulty of on-site equipment installation and maintenance. By adding a pressure transmitter and a temperature measuring instrument, the density compensation is introduced in the process of calculating the water level, which reduces the error caused by the density change of the measuring medium and greatly improves the measuring accuracy.

Description

technical field [0001] The invention relates to the field of process parameter measurement of a reactor coolant system in a nuclear power plant, in particular to the design of a water level measurement system for a pressurizer that responds to rapid pressure relief conditions. Background technique [0002] In a nuclear power plant, the water level signal of the voltage stabilizer represents the amount of water in the voltage stabilizer, which is an important protection parameter. The reactor shutdown will be triggered when the water level is low or high when the reactor power is running. Therefore, the measurement of the water level signal must be Stable and reliable. [0003] The water level measurement of the voltage stabilizer usually adopts the differential pressure method, that is, the differential pressure between the upper and lower pressure taking interfaces is measured by a capacitive differential pressure transmitter, and then the secondary measurement signal proce...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G21C17/035G01F23/14
CPCG21C17/035G01F23/14Y02E30/30
Inventor 陈学坤朱加良何正熙何鹏徐涛陈静李小芬李文平青先国王远兵苟拓余俊辉李红霞
Owner NUCLEAR POWER INSTITUTE OF CHINA
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