CN204100382U - A kind of heating network thermal equilibrium control system - Google Patents
A kind of heating network thermal equilibrium control system Download PDFInfo
- Publication number
- CN204100382U CN204100382U CN201420404648.0U CN201420404648U CN204100382U CN 204100382 U CN204100382 U CN 204100382U CN 201420404648 U CN201420404648 U CN 201420404648U CN 204100382 U CN204100382 U CN 204100382U
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- temperature
- programmable logic
- logic controller
- temperature sensor
- heating
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Abstract
The utility model discloses a kind of heating network thermal equilibrium control system, this system comprises, outdoor temperature sensor, several indoor temperature transmitters, several return water temperature sensors, programmable logic controller (PLC), is connected with outdoor temperature sensor, indoor temperature transmitter, return water temperature sensor by circuit, electric control valve connects, for receiving temperature data, and control motorized adjustment valve opening; Operating platform, be made up of computer and touch screen, be connected with Programmable Logic Controller circuit, native system, by adopting temperature difference control mode, regulates and controls the aperture of electric control valve, thus adjustment pipe network flow, temperature is controlled more accurate, system cloud gray model is more stable, reaches for thermally equilibrated object, and can realize remote monitoring.This Control system architecture is simple, can effectively regulate heat supply network to balance, realize the reasonable distribution of thermal source, improves heating quality.
Description
Technical field
The utility model belongs to heating power energy-saving field, particularly relates to a kind of heating network thermal equilibrium control system.
Background technology
Along with the develop rapidly of national economy, the concentrated supply of heating in the city scale of China is also in continuous expansion, and the management heat distribution pipe network of science has very great economic and social benefit.Mainly there is following problem in present concentrated supply of heating in the city:
One, in central heating system; pipe network thermal misadjustment phenomenon is very general; the impact of on-way resistance and local resistance and other factors is subject to during heat supply network flow transmission & distribution; the deviation that near-end pressure reduction is large, far-end pressure reduction is little is produced between feed pipe and return pipe; thus cause the problem that near-end flow is large, remote traffic is little; so both have impact on the heating effect of remote subscriber, cause again the thermal waste of near-end user;
Two, the heat exchange station of therrmodynamic system mostly adopts manual monitoring now, manual monitoring is waste of manpower not only, and operating personnel are difficult to find when there is accident potential, easily cause equipment breakdown, each heat exchange station compares the independent operating of dispersion simultaneously, be difficult to the optimal operational condition reaching heating system entirety, the heating power causing whole heat supply network is unbalance, affects heating effect and causes the significant wastage of the energy.
For the problems referred to above, present usual way is each branching valve of manual adjustments heat supply pipeline, or on each branch line, install self-balanced differential pressure valve, self-supporting temperature-sensing valve.Self-balanced differential pressure valve is mechanical control method, there is following defect: one is that regulating error is comparatively large, needs manual correction; Two is that valve is subject to water quality impact comparatively large, and connecting pipe just cannot normally work once blocking; Three is be not suitable for the larger changing flow quantity changing heating system of load variations.Only rely on self-supporting temperature-sensing valve can not solve heat supply network imbalance problem; upon power-up of the system; self-supporting temperature-sensing valve takes the flow of maximum possible; often can damage other parts of system; and temperature-sensing valve someone must go frequent adjustment; because thermal balance debugging is highly professional, only be generally difficult to reach perfect condition by manual adjustments.
Summary of the invention
The purpose of this utility model is to provide a kind of heating network thermal equilibrium control system, solves present central heating network thermal misadjustment problem.
For achieving the above object, technical scheme of the present invention is: a kind of heating network thermal equilibrium control system, comprises,
Outdoor temperature sensor, is arranged on outdoor for the outer temperature of nernst cell;
Several indoor temperature transmitters, are arranged on different heating rooms respectively, for responding to indoor temperature;
Several return water temperature sensors, are arranged on the water return pipeline of different heating room, for responding to return water temperature respectively;
Programmable logic controller (PLC), being connected with outdoor temperature sensor, indoor temperature transmitter, return water temperature sensor by circuit, electric control valve connects, for receiving temperature data, and controlling motorized adjustment valve opening;
Electric control valve, is arranged on each branch line of heating network, for controlling the flow of each branch line;
Operating platform, is made up of computer and touch screen, is connected with Programmable Logic Controller circuit, for manual control and monitoring.
Described programmable logic controller (PLC) is connected with electric control valve by motorized adjustment valve controling circuit, motorized adjustment valve opening control circuit.
The best regulative mode of heat supply running is the comprehensive adjustment of quality and quantity, namely in the process regulated, according to the change of outdoor temperature, not only change circular flow but also change supply water temperature, but there is the difficulty in heat supply network balance in this regulative mode, and control system of the present utility model, can control the relation of water temperature in heat supply running and flow flexibly, maximum has excavated the energy-saving potential of heating system.
The utility model has the advantages that, have employed supply backwater temperature difference control mode, can according to user's requirement, the each branch line heat of accurate distribution heating network, make control and regulation by the impact of supply and return water temperature fluctuation, avoid the frequent switch conditions of electric control valve, simultaneously can automatic alarm when breaking down or Heating Room temperature is ultralow, and automatically recover motor-driven valve full-gear, to ensure heating system safety.This system can the temperature of each user's heat distribution pipe network of remote monitoring and data on flows, realize the Proper Match of thermal source, heat supply network, the problem that effective solution heating effect is uneven in temperature, realizes energy saving of system to greatest extent, improves energy utilization rate, provides heat supply service quality better.
Accompanying drawing explanation
Fig. 1 is the utility model heating network thermal equilibrium control system construction drawing.
Fig. 2 is the utility model heating network thermal equilibrium control system cloud gray model flow chart.
Detailed description of the invention
As shown in Figure 1, 2, a kind of heating network thermal equilibrium control system comprises, outdoor temperature sensor 1, and model is PT100 temperature sensor, is arranged on outdoor for the outer temperature of nernst cell; Several indoor temperature transmitters 2, model is PT100 temperature sensor, is arranged on different heating rooms respectively, for responding to indoor temperature; Several return water temperature sensors 3, model is PT100 temperature sensor, is arranged on the water return pipeline of different heating room respectively, for responding to return water temperature; Programmable logic controller (PLC) 4, being connected with outdoor temperature sensor, indoor temperature transmitter, return water temperature sensor by circuit, electric control valve connects, for receiving temperature data, and controlling motorized adjustment valve opening; Electric control valve 5, is arranged on each branch line of heating network, for controlling the flow of each branch line; Operating platform, is made up of computer 61 and touch screen 62, is connected with Programmable Logic Controller circuit, for manual control and monitoring.
Concrete enforcement is: by outdoor temperature, indoor temperature, pipeline return water temperature, the aperture of electric control valve and the detection of fault, when initially work on power and fault-free or low-temperature warning situation time, programmable logic controller (PLC) sends all opens electric control valve valve command, after system starts, when detecting that indoor temperature is consistent with the indoor temperature of setting, just sent by programmable logic controller (PLC) and reduce the instruction of electric control valve valve opening, system proceeds to indoor temperature and the outer temperature difference of current indoor is subsequently the control of condition; When detecting that indoor temperature is less than design temperature or the outer temperature difference of current indoor is greater than the setting temperature difference, just sent by programmable logic controller (PLC) and increase the instruction of electric control valve valve opening, if indoor temperature is greater than design temperature or the outer temperature difference of current indoor is less than the setting temperature difference, just sent by programmable logic controller (PLC) and reduce the instruction of electric control valve valve opening, finally realize the stability contorting of room temperature.When initially working on power and have fault or low-temperature warning situation, programmable logic controller (PLC) sends all opens electric control valve valve command.
Claims (2)
1. a heating network thermal equilibrium control system, is characterized in that: comprise,
Outdoor temperature sensor, is arranged on outdoor for the outer temperature of nernst cell;
Several indoor temperature transmitters, are arranged on different heating rooms respectively, for responding to indoor temperature;
Several return water temperature sensors, are arranged on the water return pipeline of different heating room, for responding to return water temperature respectively;
Programmable logic controller (PLC), being connected with outdoor temperature sensor, indoor temperature transmitter, return water temperature sensor by circuit, electric control valve connects, for receiving temperature data, and controlling motorized adjustment valve opening;
Electric control valve, is arranged on each branch line of heating network, for controlling the flow of each branch line;
Operating platform, is made up of computer and touch screen, is connected with Programmable Logic Controller circuit, for manual control and monitoring.
2. heating network thermal equilibrium control system according to claim 1, is characterized in that, described programmable logic controller (PLC) is connected with electric control valve by motorized adjustment valve controling circuit, motorized adjustment valve opening control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420404648.0U CN204100382U (en) | 2014-07-22 | 2014-07-22 | A kind of heating network thermal equilibrium control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420404648.0U CN204100382U (en) | 2014-07-22 | 2014-07-22 | A kind of heating network thermal equilibrium control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204100382U true CN204100382U (en) | 2015-01-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420404648.0U Expired - Fee Related CN204100382U (en) | 2014-07-22 | 2014-07-22 | A kind of heating network thermal equilibrium control system |
Country Status (1)
| Country | Link |
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| CN (1) | CN204100382U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104141982A (en) * | 2014-07-22 | 2014-11-12 | 山西潞安环保能源开发股份有限公司常村煤矿 | Heat supply network heat balance control method and system |
| CN105972693A (en) * | 2016-06-01 | 2016-09-28 | 北京暖流科技有限公司 | Method and system for realizing transparent heat supply |
| CN107246650A (en) * | 2017-08-11 | 2017-10-13 | 柳箭 | Intelligent temperature adjusting means |
| CN107575934A (en) * | 2017-10-19 | 2018-01-12 | 扬州大学 | Independent pipe network hot-water heating constant-temperature control method and system based on automatic feedback principle |
| CN112178751A (en) * | 2019-07-04 | 2021-01-05 | 天津天沐环保科技有限公司 | Regulating and controlling method for heat supply pipe network |
-
2014
- 2014-07-22 CN CN201420404648.0U patent/CN204100382U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104141982A (en) * | 2014-07-22 | 2014-11-12 | 山西潞安环保能源开发股份有限公司常村煤矿 | Heat supply network heat balance control method and system |
| CN105972693A (en) * | 2016-06-01 | 2016-09-28 | 北京暖流科技有限公司 | Method and system for realizing transparent heat supply |
| CN107246650A (en) * | 2017-08-11 | 2017-10-13 | 柳箭 | Intelligent temperature adjusting means |
| CN107575934A (en) * | 2017-10-19 | 2018-01-12 | 扬州大学 | Independent pipe network hot-water heating constant-temperature control method and system based on automatic feedback principle |
| CN107575934B (en) * | 2017-10-19 | 2020-07-31 | 扬州大学 | Independent pipe network water heating constant temperature control method and system based on automatic feedback principle |
| CN112178751A (en) * | 2019-07-04 | 2021-01-05 | 天津天沐环保科技有限公司 | Regulating and controlling method for heat supply pipe network |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150114 Termination date: 20180722 |