CN102878611A - Heating pipe network fine regulation system and method - Google Patents
Heating pipe network fine regulation system and method Download PDFInfo
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Abstract
The invention relates to a heating pipe network fine regulation system and method. The system includes a first-stage pipe network, a plurality of second-stage pipe networks, a plurality of third-stage inhabitant pipe networks and a monitoring server, wherein the first-stage pipe network and the plurality of second-stage pipe networks are connected respectively through a plurality of first-stage heat exchangers in a mutual heat exchange manner; the second-stage pipe networks and the third-stage inhabitant pipe networks are connected respectively through second-stage heat exchangers in a mutual heat exchange manner; and the monitoring server is connected with the first-stage pipe network, the second-stage pipe networks and the third-stage inhabitant pipe networks. Compared with the traditional heat supply system, the system provided by the invention solves the problem of impact of thermal inertia as well as sharp temperature increase and drop of the heat supply system on safe and stable operation of the heat supply system, and the problem of lost connection of weather compensation actual measurement transmission; and a water-water heat exchanger is additionally mounted between a second-stage network system and a third-stage household heat supply system to avoid the accident caused by water shortage of heat supply equipment of heat users, the household heat supply system adopts a small-sized variable frequency circulating pump, so that heat users can adjust and control independently as per self heat requirements, and household metering is realized in deed.
Description
Technical field
The invention belongs to the field, urban heating network, the particularly meticulous regulating system of a kind of heating network and method, this system is separated the heating system in secondary network system and the hot user family, has solved the serious water loss problem of secondary network system; This system is the secondary network system stability of flow not only, is conducive to the safe operation of hydraulically balanced adjusting and heat exchange station equipment, and hot user can according to the heat demand of using of oneself, from master regulation, really realize household metering.
Background technology
Along with the development of city size, the concentrated supply of heating in the city area constantly increases.During " 12 ", basic implementation central heating the regenerative resource is adopted in northeast, North China, the resident's heating of big city, the Northwest except having ready conditions, back pressure type thermoelectricity or central heating transformation are suited measures to local conditions to develop in small and medium-sized cities, improve the proportion of cogeneration of heat and power in central heating.Heat supply network is automatically-monitored to be the inexorable trend of central heating industry development, and is the key that realizes automation control to the correct Prediction of temperature.Current, heating system adopts the weather compensation technology, real temperature when data source is the weather station, and there is following shortcoming in this mode:
1. the circulatory system of central heating has hysteresis quality (thermal inertia), causes lagging behind building heat demand curve for heating curve, has so just reduced the house environmental amenity, wastes simultaneously a large amount of heats;
2. the weather transient temperature is poly-falls or poly-the liter can cause the heating system paralysis, affects the stable operation of heat supply network, has potential safety hazard;
3. there is lost line in the transmission of weather temperature signal, and cause heating curve and actual Architecture Curve are not inconsistent, and have affected resident's heating comfort, cause Residents to report for repairment, complain to the higher authorities about an injustice and request fair settlement.
During " 12 ", Beijing will carry out the heat metering of 500,000,000 square meter heating areas and transform.According to current central heating system, after the heat metering is installed and used, can cause the variation of two net flows because of behavior energy saving, and then cause two net system waterpower unbalance, can cause like this waste of large energy and the reduction of hot user's architectural environment comfort level.
Summary of the invention
In order to address the above problem, the invention provides the technical scheme of the meticulous regulating system of a kind of heating network and method, this scheme is separated the heating system in secondary network system and the hot user family, has solved the serious water loss problem of secondary network system; This system is the secondary network system stability of flow not only, is conducive to the safe operation of hydraulically balanced adjusting and heat exchange station equipment, and hot user can according to the heat demand of using of oneself, from master regulation, really realize household metering.
Technical scheme of the present invention is:
The meticulous regulating system of a kind of heating network, comprise first-level pipeline network, a plurality of secondary network and a plurality of three grades of resident family's pipe networks and monitoring server, connect by the respectively mutual heat exchange of a plurality of one-level water-water heat exchangers between described first-level pipeline network and a plurality of secondary network, connect by the respectively mutual heat exchange of a plurality of secondary water-water heat exchangers between secondary network and a plurality of three grades of resident family's pipe networks, monitoring server connects respectively first-level pipeline network, a plurality of secondary network and a plurality of three grades of resident family's pipe networks; Wherein,
Described first-level pipeline network comprises boiler, one-level circulating pump, one-level small pump, one-level water supply tank, a plurality of force (forcing) pump; The once pipe of described a plurality of one-level water-water heat exchangers of described one-level circulating pump and parallel connection is serially connected in the boiler circulating water line, wherein, the delivery port of one-level circulating pump connects boiler circulating water pipe water inlet pipe, the water inlet of one-level circulating pump connects the once delivery port of pipe of one-level water-water heat exchanger, a plurality of force (forcing) pumps are serially connected in respectively boiler discharging tube to a plurality of one-level water-water heat exchangers once between the water inlet of pipe, described one-level water supply tank is connected to the water inlet of one-level circulating pump by the one-level small pump, balance pipe of cross-over connection between described one-level circulating pump water inlet and the boiler delivery port;
Described a plurality of secondary network comprises respectively secondary circulating pump, secondary small pump and secondary water supply tank; Described secondary circulating pump and one-level water-water heat exchanger secondary pipe are serially connected in the circulating water line of secondary network, the secondary water supply tank is connected with the water inlet of secondary circulating pump by the secondary small pump, the delivery port of secondary small pump is connected to the water inlet of one-level water-water heat exchanger secondary pipe, once managing in the circulating water line that is serially connected in secondary network parallel with one another of a plurality of secondary water-water heat exchangers, wherein, the secondary water-water heat exchanger is the delivery port of the water inlet connection one-level water-water heat exchanger secondary pipe of pipe once, and the secondary water-water heat exchanger is the water inlet of the delivery port connection secondary circulating pump of pipe once;
Described a plurality of three grades of resident family's pipe networks comprise respectively resident family's heat exchanger and three grades of circulating pumps, described resident family heat exchanger with are connected grade circulating pump and mutually are connected in series by pipeline and are connected with the secondary pipeline of secondary water-water heat exchanger, described one-level water-water heat exchanger once the water inlet of pipe and the delivery port of one-level water-water heat exchanger secondary pipe be respectively arranged with temperature sensor, temperature sensor signal is passed to monitoring server.
Scheme further is, described one-level circulating pump, three grades of circulating pumps are respectively the frequency modulation control circulating pumps, described secondary circulating pump is the power frequency circulating pump, the end of registering one's residence of described secondary network is provided with heat metering device, be provided with wireless receiver in the heat metering device, described three grades of resident family's network collocations have temperature controller, be provided with wireless launcher in the temperature controller, the FM signal of temperature controller is connected with three grades of frequency modulation control circulating pumps, FM signal is connected with heat metering device by wireless launcher, heat metering device with data-signal by network delivery to monitoring server.
Scheme further is to be provided with valve on the described balance pipe.
The meticulous control method of a kind of heating network: described method is based on the control method that the meticulous regulating system of above-mentioned a kind of heating network realizes, comprises the Calculating Temperature Variation model step of setting up a prediction and according to the stable step of Calculating Temperature Variation model control first-level pipeline network;
The described Calculating Temperature Variation model step of setting up a prediction is: obtain the weather data of next day, according to formula
Simulate one day temperature changing trend, wherein, Ts is the transient temperature of different time points, and Tg is maximum temperature in a day, and Td is minimum temperature in a day, and α is the coefficient of different weather, different time points;
Describedly according to the stable step of Calculating Temperature Variation model control first-level pipeline network be: the inlet temperature of once pipe of the one-level water-water heat exchanger of different time points is set according to the Calculating Temperature Variation model of prediction, stablizes boiler operatiopn according to inlet temperature.
Scheme further is, described different weather refers to cloudy day, fine day and snowy day, and described different time points refers to 0 to 23 integral point.
Scheme further is that the value range of described α is 0 to 0.5.
The invention has the beneficial effects as follows, compare with traditional heating system, one-level net of the present invention system is according to the temperature changing trend of temperature model prediction, regulate and the matter adjusting by the amount of circulating hot water, realize the uniformity for heating curve and building heat demand curve, solved poly-the liter or the poly-disconnection that falls impact and the transmission of weather compensation observed temperature of heating system safe and stable operation of thermal inertia problem, temperature of heating system; Install water-water heat exchanger additional between secondary network system and the three fraction family heating systems, and adopt constant flow, matter to regulate, advantage is that the secondary network system run all right has been avoided because the accident that the dehydration of hot user's heating equipment causes, skyscraper is district heating no longer, simultaneously, installing the heat metering additional causes the problem of secondary network changes in flow rate to obtain solution; Individual household heat supply system adopts the small-sized variable-frequency circulating pump, hot user can according to oneself with heat demand from master regulation, really realize household metering.
Below in conjunction with drawings and Examples invention being done one describes in detail.
Description of drawings
Fig. 1 is system architecture schematic diagram of the present invention;
Fig. 2 is the Changes in weather curve synoptic diagram of some day of the present invention.
The specific embodiment
Embodiment 1;
The meticulous regulating system embodiment of a kind of heating network, referring to Fig. 1, described system comprises first-level pipeline network 1, a plurality of secondary network 2 and a plurality of three grades of resident family's pipe networks 3 and monitoring server (not shown), connect by a plurality of one-level water-water heat exchanger 4 respectively mutual heat exchanges between described first-level pipeline network and a plurality of secondary network, connect by a plurality of secondary water-water heat exchanger 5 respectively mutual heat exchanges between secondary network and a plurality of three grades of resident family's pipe networks, monitoring server connects respectively first-level pipeline network, a plurality of secondary network and a plurality of three grades of resident family's pipe networks; Wherein,
Described first-level pipeline network comprises boiler 1-1, one-level circulating pump 1-2, one-level small pump 1-3, one-level water supply tank 1-4, a plurality of force (forcing) pump 1-5; The once pipe 4-1 of described a plurality of one-level water-water heat exchangers of described one-level circulating pump and parallel connection is serially connected in the boiler circulating water line, wherein, the delivery port of one-level circulating pump connects boiler circulating water pipe water inlet pipe, the water inlet of one-level circulating pump connects the once delivery port of pipe of one-level water-water heat exchanger, a plurality of force (forcing) pumps are serially connected in respectively boiler discharging tube to a plurality of one-level water-water heat exchangers once between the water inlet of pipe, described one-level water supply tank is connected to the water inlet of one-level circulating pump by the one-level small pump, the balance pipe 1-6 of a stable boiler hot-water flow of cross-over connection between described one-level circulating pump water inlet and the boiler delivery port;
Described a plurality of secondary network comprises respectively secondary circulating pump 2-1, secondary small pump 2-2 and secondary water supply tank 2-3; Described secondary circulating pump and one-level water-water heat exchanger secondary pipe 4-2 are serially connected in the circulating water line of secondary network, the secondary water supply tank is connected with the water inlet of secondary circulating pump by the secondary small pump, the delivery port of secondary small pump is connected to the water inlet of one-level water-water heat exchanger secondary pipe, once managing in the 5-1 circulating water line that is serially connected in secondary network parallel with one another of a plurality of secondary water-water heat exchangers, wherein, the secondary water-water heat exchanger is the delivery port of the water inlet connection one-level water-water heat exchanger secondary pipe of pipe once, and the secondary water-water heat exchanger is the water inlet of the delivery port connection secondary circulating pump of pipe once;
Described a plurality of three grades of resident family's pipe networks comprise respectively the heat exchanger 3-1 of resident family and three grades of circulating pump 3-2, described resident family heat exchanger with are connected grade circulating pump and mutually are connected in series by pipeline and are connected with the secondary pipeline 5-2 of secondary water-water heat exchanger, described one-level water-water heat exchanger once the water inlet of pipe and the delivery port of one-level water-water heat exchanger secondary pipe be respectively arranged with temperature sensor 1-7 and 2-4, temperature sensor signal is passed to monitoring server.
In above-described embodiment, first-level pipeline network is arranged in the boiler room, its water circulation system opens by one-level water-water heat exchanger and secondary network lattice, avoided because the impact that the secondary pipe network water route goes wrong first-level pipeline network is caused, and guaranteed the stability of boiler operatiopn.
Among the embodiment, secondary network is not the circulatory system of direct house lead on the traditional sense, but be divided into some heat supply blocks one of them for hot-zone, the water circulation system of this secondary network also is an independently system, and three grades of resident family's pipe networks are to be connected in the secondary network by a plurality of secondary water-water heat exchangers, three grades of resident family's pipe networks and secondary network are separate pipe networks, solve in the past resident family's pipe network and born the heating pipe network high pressure and easily go wrong, repaiied the whole heat supply of impact in case go wrong as untimely.
Among the embodiment, in order to realize the Digital Control to described one-level circulating pump, three grades of circulating pumps, described one-level circulating pump, three grades of circulating pumps are respectively the frequency modulation control circulating pumps, the power frequency circulating pump that described secondary circulating pump is civil power, so the secondary circulation is the constant flow circulation.
Among the embodiment, the heat of using for rational metering user, the end of registering one's residence of described secondary network is provided with heat metering device 2-5, be provided with wireless receiver in the heat metering device, described three grades of resident family's network collocations have temperature controller 3-3, temperature controller can gather indoor temperature, can regulate according to resident family the running frequency of three grades of circulating pumps to the requirement of indoor temperature, three grades of circulating pump frequencies or electric current are as the foundation of heat sharing, be provided with wireless launcher in the temperature controller, the FM signal of temperature controller is connected with three grades of frequency modulation control circulating pumps, FM signal is connected with heat metering device by wireless launcher, heat metering device with data-signal by network delivery to monitoring server.This kind structure can be shared the reasonability that has guaranteed that user's heat calculates with the unit total amount of heat according to the flow of each household.
Among the embodiment, because force (forcing) pump can constantly be adjusted according to the needs of user's temperature, the one-level water-water heat exchanger once quantity of circulating water of pipe can constantly change, therefore, steady in order to guarantee boiler operatiopn, balance pipe of cross-over connection between described one-level circulating pump water inlet and the boiler delivery port, and be provided with valve 1-8 at described balance pipe.
The meticulous control method embodiment of a kind of heating network: described method is based on the control method of the meticulous regulating system realization of a kind of heating network of embodiment 1, comprise first-level pipeline network 1, a plurality of secondary networks 2 and a plurality of three grades of resident family's pipe networks 3 and monitoring server (not shown), connect by a plurality of one-level water-water heat exchanger 4 respectively mutual heat exchanges between described first-level pipeline network and a plurality of secondary network, connect by a plurality of secondary water-water heat exchanger 5 respectively mutual heat exchanges between secondary network and a plurality of three grades of resident family's pipe networks, monitoring server connects respectively first-level pipeline network, a plurality of secondary networks and a plurality of three grades of resident family's pipe networks; Wherein,
Described first-level pipeline network comprises boiler 1-1, one-level circulating pump 1-2, one-level small pump 1-3, one-level water supply tank 1-4, a plurality of force (forcing) pump 1-5; The once pipe 4-1 of described a plurality of one-level water-water heat exchangers of described one-level circulating pump and parallel connection is serially connected in the boiler circulating water line, wherein, the delivery port of one-level circulating pump connects boiler circulating water pipe water inlet pipe, the water inlet of one-level circulating pump connects the once delivery port of pipe of one-level water-water heat exchanger, a plurality of force (forcing) pumps are serially connected in respectively boiler discharging tube to a plurality of one-level water-water heat exchangers once between the water inlet of pipe, described one-level water supply tank is connected to the water inlet of one-level circulating pump by the one-level small pump, the balance pipe 1-6 of a stable boiler hot-water flow of cross-over connection between described one-level circulating pump water inlet and the boiler delivery port;
Described a plurality of secondary network comprises respectively secondary circulating pump 2-1, secondary small pump 2-2 and secondary water supply tank 2-3; Described secondary circulating pump and one-level water-water heat exchanger secondary pipe 4-2 are serially connected in the circulating water line of secondary network, the secondary water supply tank is connected with the water inlet of secondary circulating pump by the secondary small pump, the delivery port of secondary small pump is connected to the water inlet of one-level water-water heat exchanger secondary pipe, once managing in the 5-1 circulating water line that is serially connected in secondary network parallel with one another of a plurality of secondary water-water heat exchangers, wherein, the secondary water-water heat exchanger is the delivery port of the water inlet connection one-level water-water heat exchanger secondary pipe of pipe once, and the secondary water-water heat exchanger is the water inlet of the delivery port connection secondary circulating pump of pipe once;
Described a plurality of three grades of resident family's pipe networks comprise respectively the heat exchanger 3-1 of resident family and three grades of circulating pump 3-2, described resident family heat exchanger with are connected grade circulating pump and mutually are connected in series by pipeline and are connected with the secondary pipeline 5-2 of secondary water-water heat exchanger, described one-level water-water heat exchanger once the water inlet of pipe and the delivery port of one-level water-water heat exchanger secondary pipe be respectively arranged with temperature sensor 1-7 and 2-4, temperature sensor signal is passed to monitoring server; Described control method comprises the Calculating Temperature Variation model step of setting up a prediction and according to the stable step of Calculating Temperature Variation model control first-level pipeline network;
The described Calculating Temperature Variation model step of setting up a prediction is: obtain the weather data of next day, according to formula
Simulate one day temperature changing trend, wherein, Ts is the transient temperature of different time points in a day, and Tg is maximum temperature in a day, and Td is minimum temperature in a day, and α is the coefficient of different weather, different time points;
Describedly according to the stable step of Calculating Temperature Variation model control first-level pipeline network be: the inlet temperature of once pipe of the one-level water-water heat exchanger of next day different time points is set according to the Calculating Temperature Variation model of prediction, stablizes boiler operatiopn according to inlet temperature.
Among the embodiment, described different weather refers to cloudy day, fine day and snowy day, and described different time points refers to 0 to 23 integral point.
Among the embodiment, the value range of described α is 0 to 0.5.
Fig. 2 has illustrated to calculate by above-mentioned formula on February 5th, 2012 relation curve of the temperature and time that the temperature a of each integral point simulates, Mathematical Modeling is embedded in the monitoring server of heat supply network automation control system, has realized the stabilizing energy-saving operation of heating system.
Among the embodiment, obtain the weather data of next day, it is the weather data by the second day of weather forecast acquisition, adopt the control of this kind mode, avoided the asynchronous control method that then traditional control network is regulated from control centre's Real-time Obtaining temperature, temperature controlled the lagging that asynchronous control method is brought caused system's control paralysis if there is the temperature transmission abnormality simultaneously.And the operation of adopting the present embodiment method can stablize primary network station, facts have proved reliable, efficient is high.
Claims (6)
1. the meticulous regulating system of heating network, comprise first-level pipeline network, it is characterized in that, described system also comprises a plurality of secondary networks and a plurality of three grades of resident family's pipe networks and monitoring server, connect by the respectively mutual heat exchange of a plurality of one-level water-water heat exchangers between described first-level pipeline network and a plurality of secondary network, connect by the respectively mutual heat exchange of a plurality of secondary water-water heat exchangers between secondary network and a plurality of three grades of resident family's pipe networks, monitoring server connects respectively first-level pipeline network, a plurality of secondary network and a plurality of three grades of resident family's pipe networks; Wherein,
Described first-level pipeline network comprises boiler, one-level circulating pump, one-level small pump, one-level water supply tank, a plurality of force (forcing) pump; The once pipe of described a plurality of one-level water-water heat exchangers of described one-level circulating pump and parallel connection is serially connected in the boiler circulating water line, wherein, the delivery port of one-level circulating pump connects boiler circulating water pipe water inlet pipe, the water inlet of one-level circulating pump connects the once delivery port of pipe of one-level water-water heat exchanger, a plurality of force (forcing) pumps are serially connected in respectively boiler discharging tube to a plurality of one-level water-water heat exchangers once between the water inlet of pipe, described one-level water supply tank is connected to the water inlet of one-level circulating pump by the one-level small pump, balance pipe of cross-over connection between described one-level circulating pump water inlet and the boiler delivery port;
Described a plurality of secondary network comprises respectively secondary circulating pump, secondary small pump and secondary water supply tank; Described secondary circulating pump and one-level water-water heat exchanger secondary pipe are serially connected in the circulating water line of secondary network, the secondary water supply tank is connected with the water inlet of secondary circulating pump by the secondary small pump, the delivery port of secondary small pump is connected to the water inlet of one-level water-water heat exchanger secondary pipe, once managing in the circulating water line that is serially connected in secondary network parallel with one another of a plurality of secondary water-water heat exchangers, wherein, the secondary water-water heat exchanger is the delivery port of the water inlet connection one-level water-water heat exchanger secondary pipe of pipe once, and the secondary water-water heat exchanger is the water inlet of the delivery port connection secondary circulating pump of pipe once;
Described a plurality of three grades of resident family's pipe networks comprise respectively resident family's heat exchanger and three grades of circulating pumps, described resident family heat exchanger with are connected grade circulating pump and mutually are connected in series by pipeline and are connected with the secondary pipeline of secondary water-water heat exchanger, described one-level water-water heat exchanger once the water inlet of pipe and the delivery port of one-level water-water heat exchanger secondary pipe be respectively arranged with temperature sensor, temperature sensor signal is passed to monitoring server.
2. the meticulous regulating system of heating network according to claim 1, it is characterized in that, described one-level circulating pump, three grades of circulating pumps are respectively the frequency modulation control circulating pumps, described secondary circulating pump is the power frequency circulating pump, the end of registering one's residence of described secondary network is provided with heat metering device, be provided with wireless receiver in the heat metering device, described three grades of resident family's network collocations have temperature controller, be provided with wireless launcher in the temperature controller, the FM signal of temperature controller is connected with three grades of frequency modulation control circulating pumps, FM signal is connected with heat metering device by wireless launcher, heat metering device with data-signal by network delivery to monitoring server.
3. the meticulous regulating system of heating network according to claim 1 is characterized in that, is provided with valve on the described balance pipe.
4. the meticulous control method of heating network: described method is based on the control method that the meticulous regulating system of heating network claimed in claim 1 realizes, it is characterized in that, described method comprises the Calculating Temperature Variation model step of setting up a prediction and according to the stable step of Calculating Temperature Variation model control first-level pipeline network;
The described Calculating Temperature Variation model step of setting up a prediction is: obtain the weather data of next day, according to formula
Simulate one day temperature changing trend, wherein, Ts is the transient temperature of different time points, and Tg is maximum temperature in a day, and Td is minimum temperature in a day, and α is the coefficient of different weather, different time points;
Describedly according to the stable step of Calculating Temperature Variation model control first-level pipeline network be: the inlet temperature of once pipe of the one-level water-water heat exchanger of different time points is set according to the Calculating Temperature Variation model of prediction, stablizes boiler operatiopn according to inlet temperature.
5. the meticulous control method of heating network according to claim 4 is characterized in that, described different weather refers to cloudy day, fine day and snowy day, and described different time points refers to 0 to 23 integral point.
6. the meticulous control method of heating network according to claim 4 is characterized in that, the value range of described α is 0 to 0.5.
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