Method for regulating critical zero differential pressure state of distributed water pump variable flow heat supply system

A technology of heating system and adjustment method, applied in heating system, space heating and ventilation details, household heating, etc., can solve the problem of critical zero pressure difference point difficult to track and measure, low system stability, and system anti-interference ability Weak and other problems, to achieve the effect of shortening the transition process time, high system stability, and enhancing anti-interference ability

Active Publication Date: 2011-02-16
HARBIN INST OF TECH
View PDF4 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the existing adjustment method of the critical zero pressure difference state of the distributed water pump, which is difficult to realize the operation of the critical zero pressure difference state throughout the heating season, the system stability is low, the critical zero pressure difference point is

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
  • Method for regulating critical zero differential pressure state of distributed water pump variable flow heat supply system
  • Method for regulating critical zero differential pressure state of distributed water pump variable flow heat supply system
  • Method for regulating critical zero differential pressure state of distributed water pump variable flow heat supply system

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0014] Specific implementation mode one: combine Figure 1-Figure 3 To illustrate this embodiment, the specific process of the adjustment method for the critical zero pressure difference state of the distributed water pump variable flow heating system in this embodiment is as follows:

[0015] At the heat source, a check valve 1-2 is installed at the outlet of the heat network main circulation pump 2-8, a stop valve 1-3 is installed at the inlet, and the heat source controller 1-5 is based on the temperature measured by the heat source outdoor temperature sensor 1-6 temperature, and the water supply temperature measured by the water supply temperature sensor 1-4 is responsible for regulating the water supply temperature of the heat source 1-1;

[0016] The adjustment of the near-end heat station: the method of quality adjustment is adopted on the secondary side of the heat exchanger 2-5 of the near-end heat station. The controller 2-1 is a cascaded regulation system with clim...

Embodiment

[0018] Example: such as Figure 4 Shown: There is a branch pipe network, and ten users are evenly distributed in the heating network. 4-1 is the head of the water pump, 4-2 is the water supply pressure line of the main pipe under the design working condition, 4-3 is the water supply pressure line of the main pipe under the minimum load, and 4-4 is the user’s capital pressure line under the design working condition Difference, 4-5 is the user's resource pressure difference at the minimum load, 4-6 is the return water pressure line of the main pipe under the minimum load, 4-7 is the return water pressure line of the main pipe under the design working condition, 2-8 It is the heat source main circulation pump, 2-7 is the near-end user, 3-1 is the user booster pump, 3-8 is the user with booster pump, assuming that the resource pressure head of each user is 10mH under the design working condition 2 O, the resource pressure head of each user is 5mH at the minimum load 2 O. The di...

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 relates to a method for regulating critical zero differential pressure state of a distributed water pump variable flow heat supply system, belonging to a method for regulating the critical zero differential pressure state of the water pump variable flow heat supply system and solving the problems of difficult realization on the maintenance of critical zero differential pressure state of the whole heating season, low system stability, difficult tracing measurement of critical zero differential pressure point, no determined index for main circulating pump regulation, weak system interference resistance capacity and long transition time of a regulating system. The method comprises the steps of: regulating a water supply temperature of a heat source by a heat source controller; regulating a near-end heating power station: meeting the demand on a secondary side user through a rotating speed regulating variable of a heat supply network circulating pump, wherein the rotating speed regulating variable is obtained from a near-end heating station controller; and regulating a heating power station with a pressurizing pump: obtaining the rotating speed regulating variable of the pressurizing pump of the user through the heating power station controller with the pressurizing pump, and meeting the demand on the secondary side user in the heating power station with the pressurizing pump. The method is used for regulating the critical zero differential pressure state of the heat supply system.

Description

technical field [0001] The invention relates to a method for adjusting the critical zero pressure difference state of a water pump variable flow heating system, in particular to a method for adjusting the critical zero pressure difference state of a distributed water pump variable flow heating system, and belongs to the technical field of variable flow heating systems. Background technique [0002] The distributed water pump heating system has been widely used at present, and its energy-saving effect has also been recognized. However, the adjustment method of the critical zero pressure difference state of the distributed water pump has the following problems: [0003] 1. When the system adjusts the variable flow rate, it is not easy to maintain a critical zero-pressure-difference state throughout the heating season. [0004] 2. When the load changes and the system adjusts the flow rate and temperature, the stability of the system is reduced due to the coupling problem of th...

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): F24D19/10
CPCY02B30/745Y02B30/70
Inventor 姜永成方修睦罗骁勇杨恩泽
Owner HARBIN INST OF TECH
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