Stable control device of thermal parameters of secondary side of compact steam generator

A technology of stable control device and steam generator, applied in steam generation, control system, lighting and heating equipment, etc., can solve the problems of small control range, unstable flow, inaccurate parameter control, etc., achieve stable control, improve shell The effect of side pressure and heat transfer enhancement

Active Publication Date: 2017-10-20
NUCLEAR POWER INSTITUTE OF CHINA
View PDF4 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a thermal parameter stabilization control device for the secondary side of a compact steam generator, which solves the problems of inaccurate parameter control and a small control

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 more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Stable control device of thermal parameters of secondary side of compact steam generator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0022] Such as figure 1 As shown, the thermal parameter stabilization control device for the secondary side of the compact steam generator of the present invention includes a water storage tank 14, which is the water source of the entire circuit, and the arrangement height must be greater than the suction inlet of the centrifugal pump to avoid cavitation of the centrifugal pump. To ensure the safe operation of the centrifugal pump, 9 AC electric heating rods are arranged in the replenishing water tank, which are divided into three groups for independent operation. According to the actual experimental requirements, the input quantity of electric heating rods is controlled, and the water temperature of the water storage tank 14 is adjusted. The water storage tank 14 is equipped with a magnetic flip The liquid level gauge monitors the liquid level of the water storage tank 14 at all times to ensure that the electric heating rod is completely submerged. The water storage tank 14 is...

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

No PUM Login to view more

Abstract

The invention discloses a stable control device of thermal parameters of the secondary side of a compact steam generator. The stable control device comprises a water storage tank, wherein the water storage tank passes through a high-speed centrifugal pump, a vertical preheater and a regulating pipeline in sequence through pipelines and then enters a water supply inlet of the secondary side of the steam generator, and a steam outlet of the secondary side of the steam generator passes through a condenser through a pipeline and then returns to the water storage tank. According to the stable control device, a large-flow adjustment branch and a small-flow adjustment branch are arranged on an output pipeline of the high-speed centrifugal pump, pneumatic switching valves are controlled to select according to the range of flow during actual operation, and multistage throttle hole plates are respectively arranged on each branch, so that the pressure difference of steam between an outlet of the centrifugal pump and the outlet of the secondary side of the compact steam generator is increased and is at least greater than 0.4 MPa, the phenomenon of flow instability of the secondary side of the compact steam generator is avoided, and the stable control over the water supply flow of the secondary side is realized.

Description

technical field [0001] The invention relates to the field of accurate and stable control of feedwater flow rate, feedwater temperature and steam pressure on the secondary side of a compact steam generator, and specifically relates to a thermal parameter stabilization control device on the secondary side of a compact steam generator. Background technique [0002] Compact steam generators have been widely used in nuclear power plants and other industrial fields. Compared with the traditional saturated natural circulation steam generator, it has the advantages of compact structure, high efficiency, and fast response to load tracking. However, under external disturbances, the pressure of superheated steam changes rapidly. If the feed water flow cannot quickly track the change of load, the steam quality will not be able to Meet the design requirements. At the same time, the heat storage capacity of the reactor coolant is large. When the working conditions change rapidly, if the ...

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
no application Login to view more
IPC IPC(8): F22B35/08
CPCF22B35/08
Inventor 宫厚军胡钰文徐建军谭曙时胡俊
Owner NUCLEAR POWER INSTITUTE OF CHINA
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap