CN112013453A - Regional heating system integrating pipe network classification and intelligent control and transformation method - Google Patents
Regional heating system integrating pipe network classification and intelligent control and transformation method Download PDFInfo
- Publication number
- CN112013453A CN112013453A CN202010999761.8A CN202010999761A CN112013453A CN 112013453 A CN112013453 A CN 112013453A CN 202010999761 A CN202010999761 A CN 202010999761A CN 112013453 A CN112013453 A CN 112013453A
- Authority
- CN
- China
- Prior art keywords
- network
- quasi
- net
- accurate
- level
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000010438 heat treatment Methods 0.000 title claims abstract description 72
- 238000011426 transformation method Methods 0.000 title claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 52
- 238000004891 communication Methods 0.000 claims abstract description 22
- 238000012544 monitoring process Methods 0.000 claims abstract description 15
- 230000009466 transformation Effects 0.000 claims abstract description 14
- 239000007789 gas Substances 0.000 description 21
- 230000001105 regulatory effect Effects 0.000 description 15
- 238000005516 engineering process Methods 0.000 description 14
- 238000000034 method Methods 0.000 description 13
- 230000008878 coupling Effects 0.000 description 12
- 238000010168 coupling process Methods 0.000 description 12
- 238000005859 coupling reaction Methods 0.000 description 12
- 230000005540 biological transmission Effects 0.000 description 9
- 238000004134 energy conservation Methods 0.000 description 8
- 230000004048 modification Effects 0.000 description 7
- 238000012986 modification Methods 0.000 description 7
- 230000009467 reduction Effects 0.000 description 7
- 230000008859 change Effects 0.000 description 6
- 230000005611 electricity Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000005259 measurement Methods 0.000 description 5
- 238000005457 optimization Methods 0.000 description 4
- 238000004088 simulation Methods 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 3
- 239000003245 coal Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000002452 interceptive effect Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- 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
- F24D19/0002—Means for connecting central heating radiators to circulation pipes
-
- 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
-
- 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
- F24D3/00—Hot-water central heating systems
- F24D3/10—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system
- F24D3/1058—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system disposition of pipes and pipe connections
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
- Steam Or Hot-Water Central Heating Systems (AREA)
Abstract
The invention discloses a regional heating system integrating pipe network classification and intelligent control and a transformation method, wherein an energy station is used as a quasi-primary network, and a heat inlet which is originally used as the primary network is transformed into a quasi-secondary network based on the transformation of a heat inlet; the thermal branch and the thermal tail end are respectively transformed into a quasi-tertiary network and a quasi-quaternary network so as to realize flow control and load regulation independent of pressure in a control unit ring; a water pump and a pressure gauge are arranged on a water return pipeline of the quasi-primary network; install dynamic pressure difference balance valve and manometer on the wet return way of accurate second grade net, accurate tertiary net, install dynamic pressure difference balance valve and divide the hydrophone on the wet return way of accurate level four net, all install the communication module of being connected with monitoring platform in accurate one-level net, accurate second grade net, accurate tertiary net and the accurate level four net.
Description
Technical Field
The invention relates to the technical field of centralized heating, in particular to a thermodynamic system transformation energy-saving method for integrated management and control of a source network tail end of an existing regional heating system, and specifically relates to dynamic hydraulic balance, pipe network graded transformation and intelligent control technology coupling of the regional heating system, so that a hardware basis is provided for realizing time-sharing, zone-temperature-division and fine management and control of the heating system, saving energy to the greatest extent and meeting various heat requirements of users.
Background
The central heating is a common heating form in northern China, and because the actual operation condition of a heating pipe network is influenced by aspects such as manufacturing, construction, working conditions, environment and the like, the traditional pipe network is difficult to eliminate hydraulic unbalance between pipe networks, so that the local tail end deviates from the design requirement, the phenomenon of uneven cooling and heating is caused, and a large amount of heat consumption is wasted.
The central heating system has three structural forms: the primary network boiler directly supplies, the secondary network heat exchange indirect heating and direct supply indirect supply hybrid system. Hydraulic and thermal imbalance are problems that are difficult to avoid with all three systems. Especially, for different types of users who cannot be partitioned, more energy is wasted due to the fact that the same pipeline is adopted for heating.
Aiming at the phenomena of unbalanced water power and excessive heat supply of a heating system, a throttle valve is additionally arranged and a variable frequency pump is installed to improve the running condition of a heating pipe network. The patent "CN 108826436A" proposes a water return temperature regulating system through a secondary side temperature control valve, thereby realizing the automatic balance of secondary side heat supply; patent "CN 209484701U" proposes a distributed variable frequency pressurization system with variable frequency pumps installed in both the primary and secondary of each heat exchange station; in the patent "CN 108662655 a", a variable frequency pump is installed on the secondary side of the heat exchange station, and a temperature regulating valve is installed on the primary side, so as to control the temperature of the secondary side water supply. Patent "CN 201100704Y" proposes a method of adjusting the hydraulic balance of a direct and indirect hybrid system by an electric control valve. Patents "CN 210485885U" and "CN 209876068U" both propose a regulating valve based on pressure balance.
The method mainly aims at improving the local hydraulic imbalance or thermal imbalance phenomenon of the secondary network system, rarely relates to energy-saving transformation of integrated management and control of the tail end of a source network, and particularly rarely relates to energy-saving transformation of a primary network direct supply system and a complex regional heating system with multiple user types.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a regional heating system integrating pipe network classification and intelligent control and a transformation method thereof, aiming at the phenomena of unbalanced water power and excessive heating of a heating system, the traditional heating pipe network is subjected to multilayer classification, a high-performance dynamic pressure difference balance electric adjusting device is adopted, and the coupling intelligent control technology is adopted, so that the flow control and the load adjustment which are independent of the pressure in a control unit ring are realized.
The purpose of the invention is realized by the following technical scheme:
a regional heating system transformation method integrating pipe network classification and intelligent control comprises the steps of taking an energy station as a quasi-primary network, transforming a heat inlet originally taken as the primary network into a quasi-secondary network based on transformation of a heat inlet; the thermal branch and the thermal tail end are respectively transformed into a quasi-tertiary network and a quasi-quaternary network so as to realize flow control and load regulation independent of pressure in a control unit ring; a water pump and a pressure gauge are arranged on a water return pipeline of the quasi-primary network; install dynamic pressure difference balance valve and manometer on the wet return way of accurate second grade net, accurate tertiary net, install dynamic pressure difference balance valve and divide the hydrophone on the wet return way of accurate level four net, all install the communication module of being connected with monitoring platform in accurate one-level net, accurate second grade net, accurate tertiary net and the accurate level four net.
The other technical scheme provided by the invention is as follows:
a regional heating system integrating pipe network grading and intelligent control comprises a quasi-first-level network, a quasi-second-level network, a quasi-third-level network and a quasi-fourth-level network, wherein the quasi-first-level network comprises a boiler connected with a water supply pipeline and a water return pipeline;
temperature sensors are arranged on the water supply pipeline and the water return pipeline of each stage of pipe network, heat meters connected with each flow meter and each temperature sensor are arranged in the quasi-first stage network, the quasi-second stage network and the quasi-third stage network, controllers connected with each dynamic differential pressure balance valve, each heat meter and each pressure meter are also arranged in the quasi-first stage network, the quasi-second stage network and the quasi-third stage network, and the controllers are connected with communication modules in the respective pipe networks; the system is characterized in that a touch display module and a room temperature sensor are installed in the quasi-quaternary network, the touch display module is connected with a dynamic differential pressure balance valve, the temperature sensor, the room temperature sensor and a communication module in the quasi-quaternary network, and each communication module is connected with a monitoring platform in a wired and/or wireless mode.
Compared with the prior art, the technical scheme of the invention has the following beneficial effects:
1. the whole thermodynamic system is classified into a plurality of layers, and relates to an energy station and a tail end, and the whole system is divided into independent control loops without influences on each other. Each loop is only affected by the load change of the own area and is not affected by the pressure fluctuation of the system. The intelligent heat supply system provides a hardware basis for realizing the integrated control of the source network tail end and the intelligent heat supply of hierarchical and graded fine control and management.
2. The dynamic differential pressure balance type electric regulating valve with reliable performance is adopted to realize flow control and load regulation independent of grading of the pipe network and pressure in each stage of pipe network ring. The control valve always has 100% of valve weight and can provide always stable control.
3. The system comprises a coupling communication module, an intelligent control technology, a heat metering instrument with reliable performance, a pressure transmitter and the like, can realize the fine control of various heat using requirements of users at different levels of a heat supply network, is favorable for the operation optimization of a heat source and a water pump, and realizes energy conservation and emission reduction to the maximum extent.
4. The coupling intelligent control technology couples the remote transmission remote control communication module (wired or wireless communication) to all monitoring points, and can realize the interactive transmission of monitoring information and a remote server. The optimal operation reference can be given by combining the load prediction of the control unit and the simulation of the system twin model, the intelligent heat supply of hierarchical, graded and fine control of the system is realized, various heat demands of users are met, and meanwhile, the energy conservation and emission reduction are realized to the greatest extent.
5. The additionally arranged control equipment and the instruments have the switching functions of manual or automatic, on-line or off-line, on-site or remote and different adjustment modes of different levels, and the device has reliable performance and high precision. For example, the accuracy of the heat meter measurement is not less than 0.2%, and the accuracy of the room temperature sensor device is not less than 0.1 ℃; the control valve always has 100% of valve authority, providing always stable control.
6. The boiler direct supply system is improved by adopting a dynamic differential pressure balance type electric regulating valve at a thermal power inlet, and the whole system is divided into a plurality of completely independent control loops. The flow fine adjustment and control irrelevant to the pressure in each heating power inlet level ring can be realized, namely, the primary network direct supply system is transformed and upgraded into a quasi-secondary network.
7. In the thermal branch, a dynamic differential pressure balance type electric regulating valve is also adopted and divided into a plurality of completely independent control loops, so that the phenomena of unbalanced hydraulic power of the branch level and excessive heat supply of partial branches can be effectively improved.
8. At the heat supply end, a dynamic pressure difference balance type electric regulating valve is also adopted, and the indoor water dividing and collecting device and the self-square pipe control interface friendly control panel are combined, so that the fine control of dividing and dividing the temperature can be effectively realized, the energy is saved to the greatest extent, and the heat demand is met.
Drawings
Fig. 1 is a schematic view of a heat supply pipe network stage modification structure of the invention.
Fig. 2 is a schematic structural diagram of the energy station transformed into a quasi-primary network.
Fig. 3 is a schematic structural diagram of a heating inlet modified into a quasi-secondary net.
Fig. 4 is a schematic structural diagram of a heating branch modified into a quasi-tertiary network.
Fig. 5 is a schematic structural diagram of a heat supply end modified into a quasi-quaternary net.
FIG. 6 is a schematic view of the area where the heating system of the embodiment is located.
Fig. 7 shows an exemplary thermal inlet control valve position characteristic.
Fig. 8a and 8b are graphs comparing the total gas consumption and the total electricity consumption of the energy station in two heating years.
FIG. 9 is a comparison of the daily gas usage of the energy plant before and after the implementation of the case transformation.
FIG. 10 is a comparison of gas saving rates in the energy station control area after the implementation case is modified.
Fig. 11 is a comparison of an embodiment case (B station) with a similar energy station (D station) using a conventional energy saving method.
Detailed Description
The invention is described in further detail below with reference to the figures and specific examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The invention provides a thermodynamic system for integrated management and control of regional heat supply source network tail ends and an energy-saving reconstruction method. Aiming at the phenomena of unbalanced water power and excessive heat supply of a heat supply system, the existing heat supply pipe network is subjected to multi-layer classification, and a high-performance dynamic differential pressure balance electric adjusting device and a coupling intelligent control technology are adopted to realize flow control and load adjustment which are independent of pressure in a control unit ring. The specific technical scheme is shown in figures 1-5.
Firstly, a technical route of integrated hierarchical fine control energy-saving reconstruction of a source network tail end is adopted, and multi-layer hierarchical control reconstruction is carried out on an existing heating power pipe network aiming at the phenomena of unbalanced water power and excessive heating of a heating system. Taking a certain regional heating system of Tianjin as an example, the existing system is a primary network heating system of 5 gas boilers directly supplying end users, and the heating area is 23 thousands of times. Each thermal inlet before modification is provided with a static balance valve, the flow of the inlet is initially regulated, but the hydraulic balance of the whole pipe network cannot be ensured after the valve is regulated again, and the dynamic regulation of the load along with the change of time cannot be realized; the internal branch of part of the inlets is not provided with any hydraulic adjusting device, and the upper floor and the lower floor have serious hydraulic imbalance; the installed shutoff valve or water distributor-collector in the room at the end of heat supply can not realize the flow balance and real-time adjustment at the end of heat supply well. The method for modifying comprises the following steps: based on the transformation of the heat power inlet, a primary network of the heat power inlet is transformed into a quasi-secondary network, namely, independent control loops which have no influence on each other; the heating power branch and the heating power tail end room are reformed into a quasi-tertiary network and a quasi-quaternary network, and the flow control and the load regulation which are irrelevant to the pressure in the control unit ring can be realized.
Secondly, the graded reconstruction of the pipe network comprises the addition of a dynamic differential pressure balance valve with reliable performance, a heat meter, a pressure meter and the like, and the coupling intelligent control technology can realize grading of the pipe network and flow control and load regulation irrelevant to the internal pressure of each grade of pipe network, is favorable for the operation optimization of a heat source and a water pump, meets various heat utilization requirements of users and simultaneously realizes energy conservation and emission reduction to the maximum extent. The specific arrangement mode of the equipment is as follows: taking a heating system in a certain area of Tianjin as an example, the existing system is a heating system of 5 gas boilers directly supplying end users, and the heating area is 23 thousands of times. The improvement in the energy station comprises the additional installation of a high-performance heat meter and a pressure gauge and the coupling intelligent control technology, so that the real-time remote transmission and remote monitoring of information such as boiler load, water pump frequency, water electric heat and the like can be realized, and the operation optimization of a heat source and a water pump is facilitated; the heating power inlet and the internal control heating power branch are additionally provided with a dynamic differential pressure balance valve with reliable performance, a heat meter, a pressure meter and the like, and the hydraulic heating power information of the control node can be remotely transmitted in real time and remotely monitored and controlled by coupling an intelligent control technology; the heating power end user is additionally provided with a water dividing and collecting device with reliable performance, a dynamic differential pressure balance valve, a heat meter, a pressure meter, a room temperature sensor and the like, and the functions of real-time remote transmission remote monitoring and control, fault diagnosis early warning and the like of the hydraulic heating power information of the control node can be realized by coupling an intelligent control technology.
Therefore, the improved regional heating system integrating pipe network classification and intelligent control specifically comprises a quasi-first-level network, a quasi-second-level network, a quasi-third-level network and a quasi-fourth-level network which are mutually communicated by a water supply pipeline and a water return pipeline, and is shown in fig. 1 to 5; the quasi-first-level network comprises a boiler connected with a water supply pipeline and a water return pipeline, flow meters 1 and pressure meters 4 are arranged on the water supply pipelines of the quasi-first-level network, the quasi-second-level network and the quasi-third-level network, a water pump 8 and a pressure meter 4 are arranged on the water return pipeline of the quasi-first-level network, dynamic differential pressure balance valves 5 and pressure meters 4 are arranged on the water return pipelines of the quasi-second-level network and the quasi-third-level network, and dynamic differential pressure balance valves 5 and water dividing and collecting devices 10 are arranged on the water return;
The dynamic differential pressure balance valve is a dynamic differential pressure balance type electric regulating valve integrating a differential pressure controller and an electric regulating valve. 1) Has dynamic balance function. As long as the system qualification pressure is kept enough, the valve can dynamically balance the resistance of the system by electric real-time adjustment according to the load change requirement in the control unit, and the flow rate of the valve is not influenced by the system pressure fluctuation and keeps the required value no matter how the system pressure changes. The whole system is divided into independent control loops which have no influence on each other. For a multi-loop system, the regulation of any loop of the whole system cannot interfere with other loops, and meanwhile, any loop cannot be influenced by the regulation of other loops, the larger the system is, the more obvious the dynamic balance characteristic is, and each loop is only influenced by the load change of the area of the loop and is not influenced by the pressure fluctuation of the system, so that the balance state is easily achieved and maintained. 2) Has excellent electric regulation function. The control unit is only affected by the standard control signal and is not affected by the pressure fluctuation of the system, so that the system is more stably regulated, more energy is saved, and the method is particularly suitable for variable flow systems with larger system load changes. 3) And optimizing the water pump setting. The valve can realize dynamic pressure difference balance in the control unit, so that when other end users adjust, the change of the whole hydraulic working condition of the pipe network cannot cause the flow change of the local end, and the flow control irrelevant to the pressure in the ring is realized, thereby avoiding energy waste caused by hydraulic imbalance. The required pump lift and flow of the system are much lower than those of the conventional system.
And finally, coupling an intelligent control technology, coupling the remote transmission remote control communication module to all monitoring platforms, realizing interactive transmission of monitoring information and a remote server through the remote transmission communication module (wired or wireless communication) arranged in the monitoring platform, giving an optimized operation reference by combining load prediction of a control unit and system twin model simulation, realizing intelligent heat supply of hierarchical fine control of the system, meeting various heat requirements of users and realizing energy conservation and emission reduction to the maximum extent.
In addition, the additionally arranged control equipment and instruments have the switching functions of manual or automatic, on-line or off-line, on-site or remote and different adjustment modes of different levels, and the device is reliable in performance and high in precision. For example, the accuracy of the heat meter measurement is not less than 0.2%, and the accuracy of the room temperature sensor device is not less than 0.1 ℃; the control valve always has 100% of valve authority, providing always stable control.
Specifically, taking a district heating system in a certain campus of Tianjin as an example, a specific implementation manner of the district heating system energy-saving transformation method integrating pipe network classification and intelligent control is as follows:
the system is applied to a regional heating system in a certain campus of Tianjin in the heating season of 2019 and 2020, and the schematic diagram of the region where the heating system is located is shown in FIG. 6. The source network integrated intelligent management and control are realized for the 28 heat power inlets of the energy station, the theoretical analysis result of comprehensive energy conservation of 20-30% is accurately verified, and a foundation is laid for finally realizing the energy conservation target of 60-70%. Referring to fig. 7-11, wherein the embodiment of fig. 7 shows various thermodynamic inlet control valve position characteristics; FIGS. 8a and 8b are the gas total and the electricity consumption total of the two annual energy source stations for heating; FIG. 9 is a comparison of the daily gas usage of the energy plant before and after the implementation of case modification; FIG. 10 is a comparison of gas saving rates in the energy station control area after the implementation case is modified; fig. 11 is a comparison of an embodiment case (B station) with a similar energy station (D station) using a conventional energy saving method.
The concept of hierarchical, fine control and staged energy-saving modification is adopted, a primary network of 4 gas boilers directly supplied to users is modified into a quasi-secondary network with a remotely-controllable heating power inlet, and a heating power branch realizes intelligent control of a tertiary network and a four-level network of a local independent room at the tail end of heating power.
The specific technical transformation of the heat pipe network system mainly comprises the following steps of (1) an energy station: DN500 ultrasonic heat meter is additionally arranged on a total water supply and return pipe in the station, and the minimum measurement flow is 7.375m3H (precision 0.18%); (2) a thermal inlet: and (3) replacing heat meters with the caliber ranges of DN80-DN150 by 28 heat inlets, wherein the measurement precision is 0.18%. The water return pipe is additionally provided with a dynamic differential pressure balance type electric regulating valve with the caliber range of DN80-DN150 to realize hydraulic balance and regulation; (3) thermal branch inside the thermal inlet: DN100 or DN65 dynamic differential pressure balance type electric regulating valve is additionally arranged on the water return pipe of the serious hydraulic imbalance excess heat supply branch; (4) thermal end room: a representative room of a branch at the tail end of a heat supply pipe network is selected, a water distributor and a dynamic differential pressure balance type electric regulating valve with the calibers of DN32, DN25 and DN25 are replaced, a temperature and humidity sensor is additionally arranged, and the measuring precision is 0.1 ℃.
In addition, the coupling communication module and the intelligent control technology, and the pressure transmitter with reliable performance and the like. And a remote transmission remote control communication module (wired or wireless communication) is coupled to all monitoring points, so that interactive transmission of monitoring information and a remote server can be realized.
An optimized operation reference is given by combining the load prediction of the control unit and the simulation of the system twin model, so that the fine control of various heat utilization requirements of users at different levels of a heat supply network can be realized, the operation optimization of a heat source and a water pump is facilitated, the various heat utilization requirements of the users are met, and the energy conservation and emission reduction are realized to the greatest extent.
The implementation case implements first-stage energy-saving transformation in the heating season of 2019-2020, and undergoes a series of processes such as early-stage exploration, early-stage simulation and analysis, intelligent transformation of a heat supply network, system signal debugging and the like, and intelligent management and control of a central station and 28 building heat inlets are implemented in the early stage (the load of the unmanaged inlets accounts for 18.9%).
Based on the measurement of water, electricity and gas meters in the energy station (including an unmanaged high area, and the design load ratio is 13.5%), the implementation effect of the 2019-containing 2020 project is analyzed and compared with that before the 2018-containing 2019 transformation. In the energy consumption comparison analysis, comparison in different stages is carried out, including comparison in the whole heating season of two years, and synchronization comparison in the period of school and vacation.
2019 and 2020, the fuel gas consumption is 135.62 ten thousand, the electricity consumption is 32.5 ten thousand kWh, the water consumption is 5325 tons, and the three terms are converted into the unit consumption of 7.585kg standard coal/m3. Compared with the last heating year, the gas consumption is reduced by 47.25 ten thousand, the power consumption is reduced by 9.6 ten thousand kWh, and the carbon emission is reduced by 1100 tons in two terms. Compared with the heating season of 2018 and 2019, the gas consumption of the 2019 and 2020 is reduced by 25.66%, and the electricity consumption is reduced by 22.87%, which is shown in fig. 8a and 8 b.
Fig. 9 is a comparison of daily gas consumption of the energy station before and after the implementation of case modification, and fig. 10 is a comparison of gas saving rate of the energy station control area after the implementation of case modification. Compared with the last year, the gas saving rate of the first stage of the implementation of the patent technology is 31.07 percent by considering heating time factors, meteorological factors and factors of unmanaged and controlled entrances.
The project implementation energy-saving reconstruction cost mainly comprises the thermodynamic system reconstruction cost and the software and hardware cost of a communication control platform, and the investment recovery period of the implementation case is 2-3 years.
Table 1 gas/electricity/water consumption of the energy station of this embodiment
The daily gas consumption of the 2019 and 2020 heating year is obviously reduced, and the energy-saving effect in the middle and later heating periods is particularly obvious. Particularly, in the final heating stage, cold and fake superposition is performed, gap heating and terminal compensation are adopted, the energy station boiler and the water pump both run at ultra-low load, and compared with continuous heating and the same period of the last year, the daily gas consumption is greatly reduced.
Table 2 embodiment example gas amount of energy station two heating years different time period synchronization comparison
The control group is the same period of the last year of heating, and belongs to the school period or cold holiday
The embodiment (station B) is compared with a similar energy station (station D) using a conventional energy saving method. The two heating plant thermodynamic systems have the same basic characteristics, are built at the same time, have the same operation and maintenance personnel, and belong to the campus comprehensive building group, wherein the station B adopts the technical scheme of the invention, and the station D adopts the traditional energy-saving method. Compared with the previous year, the reduction range of the electric quantity and the gas consumption of the B station in the 2019-2020 year is obviously higher than that of the D station. The year of year 2020 converted into standard coal consumption per unit of the B station 2019 is 7.59kg per square meter, which is reduced by 25.6 percent compared with the year of year 2019 converted into energy-saving coal before transformation. The D station adopts a traditional energy-saving method, and the year in 2019 and 2020 is reduced by 10.7 percent compared with the year in 2018 and 2019. Therefore, the station B adopting the technical scheme of the invention has a comprehensive energy-saving rate higher than that of the station D adopting the traditional energy-saving method by 14.9 percent, as shown in fig. 11.
Table 3 comparison of embodiment energy stations (B station) and analogous energy stations (D station)
In conclusion, the implementation case adopts the technical scheme of the invention and integrates the pipe network classification and intelligent control technology, the primary network of 4 direct supply users of the gas boilers is transformed into a quasi-secondary network with each thermal power inlet operation state capable of being monitored in real time and remotely transmitted, and the internal branches of partial inlets realize the intelligent control of a tertiary network and a four-stage network from local to a tail end independent room. The user feedback, the technology can greatly improve the temperature imbalance problem, the investment is low, and the energy-saving effect is obvious. The heating problem can be solved without going out of home, a large amount of manpower and material resources are saved, the problems of overhigh energy consumption, unbalanced heat supply and the like caused by low level of operators are solved, and the operation and maintenance workload and the working strength are greatly reduced. The practice achievement can be popularized and applied to refined control of heat supply under the condition that heat supply network users are complex, and finally energy conservation and emission reduction of a larger range are achieved.
The present invention is not limited to the above-described embodiments. The foregoing description of the specific embodiments is intended to describe and illustrate the technical solutions of the present invention, and the above specific embodiments are merely illustrative and not restrictive. Those skilled in the art can make many changes and modifications to the invention without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (2)
1. A regional heating system transformation method integrating pipe network classification and intelligent control is characterized in that an energy station is used as a quasi-primary network, transformation is carried out based on a heating power inlet, and a heating power inlet which is originally used as the primary network is transformed into a quasi-secondary network; the thermal branch and the thermal tail end are respectively transformed into a quasi-tertiary network and a quasi-quaternary network so as to realize flow control and load regulation independent of pressure in a control unit ring; a water pump and a pressure gauge are arranged on a water return pipeline of the quasi-primary network; install dynamic pressure difference balance valve and manometer on the wet return way of accurate second grade net, accurate tertiary net, install dynamic pressure difference balance valve and divide the hydrophone on the wet return way of accurate level four net, all install the communication module of being connected with monitoring platform in accurate one-level net, accurate second grade net, accurate tertiary net and the accurate level four net.
2. A regional heating system integrating pipe network classification and intelligent control is characterized by comprising a quasi-first-level network, a quasi-second-level network, a quasi-third-level network and a quasi-fourth-level network which are mutually communicated through a water supply pipeline and a water return pipeline, wherein the quasi-first-level network comprises a boiler connected with the water supply pipeline and the water return pipeline;
temperature sensors are arranged on the water supply pipeline and the water return pipeline of each stage of pipe network, heat meters connected with each flow meter and each temperature sensor are arranged in the quasi-first stage network, the quasi-second stage network and the quasi-third stage network, controllers connected with each dynamic differential pressure balance valve, each heat meter and each pressure meter are also arranged in the quasi-first stage network, the quasi-second stage network and the quasi-third stage network, and the controllers are connected with communication modules in the respective pipe networks; the system is characterized in that a touch display module and a room temperature sensor are installed in the quasi-quaternary network, the touch display module is connected with a dynamic differential pressure balance valve, the temperature sensor, the room temperature sensor and a communication module in the quasi-quaternary network, and each communication module is connected with a monitoring platform in a wired and/or wireless mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010999761.8A CN112013453A (en) | 2020-09-22 | 2020-09-22 | Regional heating system integrating pipe network classification and intelligent control and transformation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010999761.8A CN112013453A (en) | 2020-09-22 | 2020-09-22 | Regional heating system integrating pipe network classification and intelligent control and transformation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112013453A true CN112013453A (en) | 2020-12-01 |
Family
ID=73522691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010999761.8A Pending CN112013453A (en) | 2020-09-22 | 2020-09-22 | Regional heating system integrating pipe network classification and intelligent control and transformation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112013453A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112097315A (en) * | 2020-09-22 | 2020-12-18 | 天津大学 | Time-sharing and zone-dividing complementary intermittent heating method suitable for school district heating system |
| CN114777193A (en) * | 2022-04-24 | 2022-07-22 | 浙江英集动力科技有限公司 | Secondary network household regulation and control mode switching method and system for heat supply system |
| CN115013860A (en) * | 2022-05-27 | 2022-09-06 | 浙江英集动力科技有限公司 | Autonomous optimization regulation and control method for injection pump heating system based on building portrait |
| CN115111625A (en) * | 2022-06-30 | 2022-09-27 | 华电电力科学研究院有限公司 | Remote steam source heat supply network debugging method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202349298U (en) * | 2011-11-18 | 2012-07-25 | 杭州哲达科技股份有限公司 | Intelligent dynamic differential pressure balanced valve integrating energy perceptive function |
| CN102734857A (en) * | 2011-04-07 | 2012-10-17 | 杭州三花研究院有限公司 | Heating system |
| CN203421772U (en) * | 2013-07-09 | 2014-02-05 | 浙江大学昆山创新中心 | Intelligent heat exchange station |
| CN104048347A (en) * | 2014-07-01 | 2014-09-17 | 威海国能自控科技有限公司 | Intelligent heat supply network integrated system and control method thereof |
| CN210509764U (en) * | 2019-06-12 | 2020-05-12 | 青岛海瑞智能工程有限公司 | Isobaric pressure difference augmented flow control system |
| KR102148855B1 (en) * | 2019-08-20 | 2020-08-28 | (주)상신 | Variable flow heating system for multy-family houses |
| CN212511403U (en) * | 2020-09-22 | 2021-02-09 | 天津大学 | Integrated pipe network grading and intelligent control regional heating system |
-
2020
- 2020-09-22 CN CN202010999761.8A patent/CN112013453A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102734857A (en) * | 2011-04-07 | 2012-10-17 | 杭州三花研究院有限公司 | Heating system |
| CN202349298U (en) * | 2011-11-18 | 2012-07-25 | 杭州哲达科技股份有限公司 | Intelligent dynamic differential pressure balanced valve integrating energy perceptive function |
| CN203421772U (en) * | 2013-07-09 | 2014-02-05 | 浙江大学昆山创新中心 | Intelligent heat exchange station |
| CN104048347A (en) * | 2014-07-01 | 2014-09-17 | 威海国能自控科技有限公司 | Intelligent heat supply network integrated system and control method thereof |
| CN210509764U (en) * | 2019-06-12 | 2020-05-12 | 青岛海瑞智能工程有限公司 | Isobaric pressure difference augmented flow control system |
| KR102148855B1 (en) * | 2019-08-20 | 2020-08-28 | (주)상신 | Variable flow heating system for multy-family houses |
| CN212511403U (en) * | 2020-09-22 | 2021-02-09 | 天津大学 | Integrated pipe network grading and intelligent control regional heating system |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112097315A (en) * | 2020-09-22 | 2020-12-18 | 天津大学 | Time-sharing and zone-dividing complementary intermittent heating method suitable for school district heating system |
| CN112097315B (en) * | 2020-09-22 | 2021-12-10 | 天津大学 | Time-sharing and zone-dividing complementary intermittent heating method suitable for school district heating system |
| CN114777193A (en) * | 2022-04-24 | 2022-07-22 | 浙江英集动力科技有限公司 | Secondary network household regulation and control mode switching method and system for heat supply system |
| CN114777193B (en) * | 2022-04-24 | 2023-05-30 | 浙江英集动力科技有限公司 | Method and system for switching household regulation and control modes of secondary network of heating system |
| CN115013860A (en) * | 2022-05-27 | 2022-09-06 | 浙江英集动力科技有限公司 | Autonomous optimization regulation and control method for injection pump heating system based on building portrait |
| CN115013860B (en) * | 2022-05-27 | 2023-11-03 | 浙江英集动力科技有限公司 | Autonomous optimization regulation and control method for jet pump heating system based on building portrait |
| CN115111625A (en) * | 2022-06-30 | 2022-09-27 | 华电电力科学研究院有限公司 | Remote steam source heat supply network debugging method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN212511403U (en) | Integrated pipe network grading and intelligent control regional heating system | |
| CN112013453A (en) | Regional heating system integrating pipe network classification and intelligent control and transformation method | |
| CN102518946B (en) | Energy saving method for cooling water circulation system | |
| CN101949559A (en) | Intelligent energy-saving mixed water heat supply method | |
| CN106295900A (en) | A kind of city intelligent energy management system | |
| CN201093622Y (en) | Central heat supply secondary network energy saving control system | |
| CN112417662B (en) | Method for realizing dynamic hydraulic optimization of centralized heat supply pipe network system | |
| CN103383121A (en) | District air-conditioner distributed secondary pump system | |
| CN209672454U (en) | A kind of intelligence centralized heating and energy conservation management system | |
| CN208779553U (en) | Pipe network balance-conditioning system | |
| CN201100704Y (en) | Intelligent controlled energy-saving heat supply system | |
| CN104930576A (en) | Highly-stable anticorrosion complete set heat supply system | |
| CN107559945A (en) | A kind of waterpower self-regulation heating system and self-adjusting method | |
| CN109163374A (en) | Pipe network balance-conditioning system and method | |
| CN114294708B (en) | Method for adjusting heat storage of long-distance heat supply pipe network | |
| CN114484556B (en) | Water supply temperature regulation and control method based on target energy consumption management and control | |
| CN212108661U (en) | Full-automatic hydraulic adjustment automatic balance system | |
| CN111911985A (en) | Building formula heat exchanger unit based on energy consumption analysis | |
| KR101089170B1 (en) | Advanced process control method for district heat network | |
| CN102878611A (en) | Heating pipe network fine regulation system and method | |
| CN209801590U (en) | User distributed heat supply energy-saving device | |
| CN204943628U (en) | High steady anticorrosion complete heating system | |
| CN208704104U (en) | A kind of unattended equipment room control system of air-conditioning system | |
| CN211716680U (en) | Special balance adjusting valve group for primary heating network | |
| CN208222623U (en) | Intelligent building thermal power plant unit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |