CN107726581A - A kind of subscriber access system for regional cooling and heating system - Google Patents
A kind of subscriber access system for regional cooling and heating system Download PDFInfo
- Publication number
- CN107726581A CN107726581A CN201711099726.5A CN201711099726A CN107726581A CN 107726581 A CN107726581 A CN 107726581A CN 201711099726 A CN201711099726 A CN 201711099726A CN 107726581 A CN107726581 A CN 107726581A
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- Prior art keywords
- user
- pipe network
- side pipe
- cold
- valve
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- 238000001816 cooling Methods 0.000 title claims abstract description 43
- 238000010438 heat treatment Methods 0.000 title claims abstract description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 77
- 230000010354 integration Effects 0.000 claims abstract description 20
- 238000001514 detection method Methods 0.000 claims abstract description 6
- 230000001105 regulatory effect Effects 0.000 description 5
- 239000008400 supply water Substances 0.000 description 5
- 238000005265 energy consumption Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 241000196171 Hydrodictyon reticulatum Species 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003020 moisturizing effect Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
- F24D19/1009—Arrangement or mounting of control or safety devices for water heating systems for central heating
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Steam Or Hot-Water Central Heating Systems (AREA)
Abstract
The invention discloses a kind of subscriber access system for regional cooling and heating system, including quiescent flow balanced valve, Differential Pressure Controller, proportional integration motor-driven valve, temperature transmitter, PID controller；Wherein PID controller is connected with proportional integration motor-driven valve, temperature transmitter respectively, proportional integration motor-driven valve is arranged on the return pipe of each user's branch road cold and heat supply primary side pipe network, temperature transmitter is arranged on the return pipe of each user's cold water hot water secondary side pipe network, the temperature information of detection is transmitted to PID controller, PID controller and controls the valve opening of proportional integration motor-driven valve accordingly by temperature transmitter.The present invention adjusts register one's residence flow, pressure of pipe network conveying cold/hot water to proportional integration motor-driven valve working range, conveniently automatically controls.
Description
Technical field
The present invention relates to Regional Energy cold and heat supply field, more particularly to a kind of user for regional cooling and heating system
Access system.
Background technology
Regional cooling and heating system be in order to meet the cold source of air conditioning of the multiple buildings in a certain specific region/thermal source requirement,
By special energy source station centralized system for cold water/hot water, and carry out by region pipe network the cold and heat supply system of supply chilled water/hot water
System.Low temperature chilled water or hot water prepared by energy source station, it is delivered to through region pipe network between user's plate changes, resilience is conveyed after heat exchange
Source station.Regional cooling and heating system is used closed cycle and separated completely with access system with user.Primary concern is that reduce
System pressure-bearing, beneficial to adjusting and meeting user's different access progress the problems such as.
As the end energy consumption system of regional cooling and heating system, subscriber access system is regional cold supply system and each list
The tie point of body building, design, lectotype selection and the control technology of subscriber access system have influence on whole region cold supply system
Network hydraulic operation state, subscriber access system run the whether efficient energy consumption level for determining whole region cold and heat supply system.
The engineering experience of domestic many district cooling and heatings shows, it is poor with actual motion to be easier to Design cooling load occur
Away from the problem of.Traditional subscriber access system controls thinking, and for the Water temperature control using outdoor temperature as function, computer is certainly
After dynamic detection outdoor temperature, it is superimposed into corresponding heat supply regulating loop, is changed according to outdoor temperature, automatically adjust cold and heat supply
Load.But there is problems with above-mentioned regulative mode：
(1) secondary water-supply temperature is difficult to control, and control mode is single, and can not be according to different situations, different demands, difference
Period uses the method for operation most saved；
(2) regulating valve power consumption is serious, and circulating pump and moisturizing pump output flow can not be with cold and heat supply loads and pipe network pressure
The change of power and change, but remain constant flow.When needing to adjust flow, generally use is opened big valve or turned down
Valve is artificially adjusted, and regulating cycle length, is caused the significant wastage of electric energy and is difficult to mix up.Moreover produced on valve
Supplementary loss, equally wastes mass energy.
(3) user's regulating valve valve anthority deviates working range, can not play due adjustment effect.
Energy loss caused by can avoiding using valve regulated is controlled to circulating pump using frequency conversion speed-adjusting system, but
How data of each control node and be to be controlled to frequency conversion system using above-mentioned data as parameter in reasonable acquiring heat supply system,
To realize the intelligent control of central heating system, turn into urgent problem to be solved in the prior art.
The content of the invention
The shortcomings that it is a primary object of the present invention to overcome prior art and deficiency, one kind are used for regional cooling and heating system
Subscriber access system.
The purpose of the present invention is realized by following technical scheme：
A kind of subscriber access system for regional cooling and heating system, including quiescent flow balanced valve, self-operated type pressure difference
Control valve, proportional integration motor-driven valve, temperature transmitter, PID controller；Wherein PID controller respectively with proportional integration motor-driven valve,
Temperature transmitter is connected, and proportional integration motor-driven valve is arranged on the return pipe of each user's branch road cold and heat supply primary side pipe network, temperature
Spend transmitter to be arranged on the return pipe of each user's cold water hot water secondary side pipe network, temperature transmitter passes the temperature information of detection
PID controller is transported to, PID controller controls the valve opening of proportional integration motor-driven valve accordingly；Quiescent flow balanced valve is arranged on
On the feed pipe of district cooling and heating primary side pipe network, Differential Pressure Controller is arranged on district cooling and heating primary side pipe network
Return pipe on；The quiescent flow balanced valve is used to limit user's branch road maximum stream flow, and the Differential Pressure Controller is used
Stablize for backwater pressure difference and limit within a preset range in maintenance user's branch road, so as to meet needed for the work of proportional integration motor-driven valve
Flow and pressure requirements；
The regional cooling and heating system includes district cooling and heating primary side pipe network, each secondary side pipe of user's cold water hot water
Net, the district cooling and heating primary side pipe network are made up of each user's branch road cold and heat supply primary side pipe network.Used according to secondary side
Family actual load adjusts the valve opening of proportional integration motor-driven valve, it is final in real time, dynamic regulation primary side flow.
The regional cooling and heating system also including user's plate change between, user's plate change an automatic control system；Wherein region
Cold and heat supply primary side pipe network by cold water hot water prepared by district cooling and heating station by user's plate change between cold heat exchanged heat
To each user's cold water hot water secondary side pipe network, conveyed by the variable frequency pump for being installed on each user's cold water hot water secondary side pipe network
Recycled to user end, user's plate changes an automatic control system by plate between changing and is controlled, each user's branch road cold and heat supply
Primary side pipe network, each user's cold water hot water secondary side pipe network change spaced apart, indirect cooling heat supply by user's plate.
User's plate is provided with plate and changes group between changing, the plate, which changes group, includes the plate type heat exchanger of more than one, board-like to change
It is in parallel between hot device；Plate changes water supply of the secondary side outlet pipe of group after water knockout drum with each user's cold water hot water secondary side pipe network
Pipe connects, and the return pipe of each user's cold water hot water secondary side pipe network changes the secondary of group by circulating pump group and heat exchanger group access board
Side water inlet pipe.
Hand-operated butterfly valve is installed between the feed pipe and return pipe of each user's branch road cold and heat supply primary side pipe network, can
Manual-lock as needed or bypass；The return pipe of each user's branch road cold and heat supply primary side pipe network is provided with electric butterfly valve, can
It is automatic as needed to close；The feed pipe of each user's branch road cold and heat supply primary side pipe network is provided with the Y types for removing debris in water
Filter；The feed pipe of each user's branch road cold and heat supply primary side pipe network is provided with high precision electro magnetic-type cold meter, for cold
Metering；Feed pipe, the return pipe of each user's branch road cold and heat supply primary side pipe network and each user's cold water hot water secondary side pipe network
Temperature transmitter, pressure transmitter are installed simultaneously, automatically controlled with carrying out remote centralized；Each user's branch road cold and heat supply one
The return pipe of secondary side pipe net, the feed pipe of each user's cold water hot water secondary side pipe network are mounted on drain valve, are sluiced for overhauling
And blowdown.
The present invention compared with prior art, has the following advantages that and beneficial effect：
1st, the construction of regional cooling and heating system of the present invention is not the present invention where the main creation point of the present invention
The creation point of technical scheme be on existing regional cooling and heating system, there is provided a subscriber access system solves to carry on the back
The problem of listed by scape technology.
Other pid algorithm belongs to the algorithm of comparative maturity, and PID control is closed-loop control, also comparative maturity, therefore technical scheme
In repeat no more.
2nd, the present invention is separated regional cooling and heating system and user using subscriber access system completely, it is ensured that energy source station side
For closed cycle, energy source station side pump head is reduced, reduces conveying energy consumption；And it can avoid using water saving measures control pipe network pressure
Head；Waterpower is uneven between each user can be avoided；The loss of refrigeration capacity caused by water pump, lifting system operational efficiency can be reduced
With economy；System working pressure can be reduced, lifts security.The present invention registers one's residence pipe network conveying cold/hot water flow, pressure
In regulation to proportional integration motor-driven valve working range, conveniently automatically control.
Brief description of the drawings
Fig. 1 is a kind of structural representation of subscriber access system for regional cooling and heating system of the present invention；Need
It is noted that it is mistake that the dotted line in Fig. 1, which is not, but it is indicated by the solid line typically to supply water in the art, backwater dotted line
Represent.
Fig. 2 is that user's plate changes a district cooling side automatic control and should refer to plate and changes a control principle drawing.
Wherein, mark meaning is specific as follows：
1- Hand-operated butterfly valves, 2- colds meter, 3- quiescent flows balanced valve, 4-Y type filters, 5- drain valves, 6- proportional integrations
Motor-driven valve, 7- Differential Pressure Controllers, 8- pressure transmitters, 9- temperature transmitters, 10- pressure difference transmitters, 11- pressure gauges,
12- thermometers, 13- plate type heat exchangers, 14- user side variable-flows chilled water pump, 15- electric butterfly valves.
Embodiment
With reference to embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are unlimited
In this.
As shown in figure 1, the subscriber access system of the present embodiment is used for regional cooling and heating system.The district cooling
High-pressure high-flow cold water/hot water of heat supply primary side pipe network conveying, by quiescent flow balanced valve and Differential Pressure Controller,
Hot water/cold water is adjusted to proportional integration motor-driven valve operating pressure, range of flow, temperature transmitter is arranged on each user's cold water
On the feed pipe of hot water secondary side pipe network, temperature transmitter transmits the temperature information of detection to PID controller, PID controller
The valve opening of proportional integration motor-driven valve is controlled accordingly.District cooling and heating primary side pipe network, each user's cold water hot water secondary side
Pipe network by user's plate change between realize heat exchange.
It is installed in proportional integration electric control valve on the return pipe of each user's branch road cold and heat supply primary side pipe network, supplies
Water temperature sensor, pressure of supply water sensor collectively form secondary return water temperature control module；Wherein electric control valve is used to control
User's plate processed changes a primary side return pipe flow, and supply water temperature sensor, primary side pressure of supply water sensor are respectively used to detect
Primary side supply water temperature and pressure.
The sensor group includes house steward's user supply and return water temperature sensor, house steward user for pressure of return water sensor, plate
Change primary side supply and return water temperature sensor, plate changes primary side and changes secondary side supply and return water temperature sensing for pressure of return water sensor, plate
Device and flowmeter, main purpose are：Realize that plate changes an integrated control ＆ management for cooling operation, and cooling cold is provided
Metering etc..
The implication of legend and major function are as shown in table 1 in Fig. 1：
Table 1
Fig. 2 is that user's plate changes a district cooling side automatic control and should refer to plate and changes a control principle drawing, and robot control system(RCS) passes through detection
User's secondary side return water temperature, control pipe network primary side plate changes branch road return pipe motor-driven valve control valve opening, automatic so as to realize
Control.Each funtion part working condition of access system of robot control system(RCS) monitoring simultaneously, realizes monitoring, alarm and control function.Fig. 2
The purposes and state of middle code name are as shown in table 2：
Table 2
Above-described embodiment is the preferable embodiment of the present invention, but embodiments of the present invention are not by above-described embodiment
Limitation, other any Spirit Essences without departing from the present invention with made under principle change, modification, replacement, combine, simplification,
Equivalent substitute mode is should be, is included within protection scope of the present invention.
Claims (4)
- A kind of 1. subscriber access system for regional cooling and heating system, it is characterised in that：Including quiescent flow balanced valve, certainly Power formula differential pressure control valve, proportional integration motor-driven valve, temperature transmitter, PID controller；Wherein PID controller is accumulated with ratio respectively Divide motor-driven valve, temperature transmitter connection, proportional integration motor-driven valve is arranged on returning for each user's branch road cold and heat supply primary side pipe network On water pipe, temperature transmitter is arranged on the return pipe of each user's cold water hot water secondary side pipe network, and temperature transmitter is by detection Temperature information transmits to PID controller, PID controller and controls the valve opening of proportional integration motor-driven valve accordingly；Quiescent flow is put down The valve that weighs is arranged on the feed pipe of district cooling and heating primary side pipe network, and Differential Pressure Controller is arranged on district cooling and heating On the return pipe of primary side pipe network；The quiescent flow balanced valve is used to limit user's branch road maximum stream flow, the self-operated type pressure Poor control valve is used to maintain user's branch road for backwater pressure difference to stablize and limit within a preset range, so as to meet that proportional integration is electronic Flow and pressure requirements needed for valve work；The regional cooling and heating system includes district cooling and heating primary side pipe network, each user's cold water hot water secondary side pipe network, The district cooling and heating primary side pipe network is made up of each user's branch road cold and heat supply primary side pipe network.
- 2. it is used for the subscriber access system of regional cooling and heating system according to claim 1, it is characterised in that：The region Cold and heat supply system also including user's plate change between, user's plate change an automatic control system；Wherein side pipe of district cooling and heating Net by cold water hot water prepared by district cooling and heating station by user's plate change between cold heat exchanged heat to each user's cold water Hot water secondary side pipe network, being delivered to the circulation of user end by the variable frequency pump for being installed on each user's cold water hot water secondary side pipe network makes With user's plate changes an automatic control system by plate between changing and is controlled, each user's branch road cold and heat supply primary side pipe network, each user Cold water hot water secondary side pipe network changes spaced apart, indirect cooling heat supply by user's plate.
- 3. it is used for the subscriber access system of regional cooling and heating system according to claim 2, it is characterised in that：The user Plate is provided with plate and changes group between changing, the plate, which changes, organizes the plate type heat exchanger for including more than one, in parallel between plate type heat exchanger；Plate changes Feed pipe of the secondary side outlet pipe of group with each user's cold water hot water secondary side pipe network after water knockout drum is connected, each user's cold water The return pipe of hot water secondary side pipe network changes the secondary side water inlet pipe of group by circulating pump group and heat exchanger group access board.
- 4. it is used for the subscriber access system of regional cooling and heating system according to claim 1, it is characterised in that：Each use Hand-operated butterfly valve is installed between the feed pipe and return pipe of family branch road cold and heat supply primary side pipe network；Each user's branch road cold and heat supply The return pipe of primary side pipe network is provided with electric butterfly valve；The feed pipe of each user's branch road cold and heat supply primary side pipe network, which is provided with, to be removed Remove the y-type filter of debris in water；The feed pipe of each user's branch road cold and heat supply primary side pipe network is provided with high precision electro magnetic-type Cold meter, for cooling metering；Each user's branch road cold and heat supply primary side pipe network and each user's cold water hot water secondary side pipe network Feed pipe, return pipe simultaneously temperature transmitter, pressure transmitter are installed；Each user's branch road cold and heat supply primary side pipe network Return pipe, the feed pipe of each user's cold water hot water secondary side pipe network be mounted on drain valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711099726.5A CN107726581A (en) | 2017-11-09 | 2017-11-09 | A kind of subscriber access system for regional cooling and heating system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711099726.5A CN107726581A (en) | 2017-11-09 | 2017-11-09 | A kind of subscriber access system for regional cooling and heating system |
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| CN107726581A true CN107726581A (en) | 2018-02-23 |
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| CN201711099726.5A Pending CN107726581A (en) | 2017-11-09 | 2017-11-09 | A kind of subscriber access system for regional cooling and heating system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109118658A (en) * | 2018-07-30 | 2019-01-01 | 台州卓标企业管理咨询有限公司 | A kind of intelligent wireless lock-controlled valve management system design method |
| CN109654680A (en) * | 2018-11-16 | 2019-04-19 | 中山大学 | A kind of air conditioning water heat exchanger primary side water pump control method of robustness enhancing |
| CN109708226A (en) * | 2019-01-21 | 2019-05-03 | 华南理工大学建筑设计研究院有限公司 | A kind of user's frequency conversion distribution for district cooling mixes water access system and method |
| CN110701361A (en) * | 2019-10-28 | 2020-01-17 | 上海庄生机电工程设备有限公司 | Method for solving hydraulic balance by utilizing equal-percentage valve characteristic curve |
| CN109708226B (en) * | 2019-01-21 | 2024-05-31 | 华南理工大学建筑设计研究院有限公司 | User variable frequency distributed water mixing access system and method for regional cooling |
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Application publication date: 20180223 |