CN109340903A - Heat storing type electric boiler heat accumulation control method and dedicated unit - Google Patents
Heat storing type electric boiler heat accumulation control method and dedicated unit Download PDFInfo
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- CN109340903A CN109340903A CN201811296762.5A CN201811296762A CN109340903A CN 109340903 A CN109340903 A CN 109340903A CN 201811296762 A CN201811296762 A CN 201811296762A CN 109340903 A CN109340903 A CN 109340903A
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
- F24H9/2014—Arrangement or mounting of control or safety devices for water heaters using electrical energy supply
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- General Engineering & Computer Science (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The present invention relates to boiler heat-storage technology fields, it is a kind of heat storing type electric boiler heat accumulation control method and dedicated unit, the heat storing type electric boiler heat accumulation control method, it carries out as follows: according to the thermic load of weather forecast data forecasted electricity market price peak Pinggu at times, further according to the heat load prediction value of electricity price peak Pinggu day part, the operating status of electric boiler is controlled.The method of the invention passes through with the thermic load of weather forecast data prediction following electricity price peak Pinggu period, it realizes using outdoor weather condition as the heat load prediction of impact factor, paddy electricity is made full use of to be heat user heat supply and be peak usually section heat accumulation, to save more flat, peak period electricity consumptions, so circulation, realize on-demand heat accumulation, according to the principle that need to store up balance, reduce heat waste, and reach maximum energy-saving run, while meeting peak Pinggu day part heat demand, additionally it is possible to reduce the operating cost of electric boiler.
Description
Technical field
It is a kind of heat storing type electric boiler heat accumulation control method and dedicated unit the present invention relates to boiler heat-storage technology field.
Background technique
Currently, Northeast China, North China, northwest (referred to as " three Norths ") regional heat supply in winter phase because of " wind-heat conflict " caused by
Abandonment problem is increasingly severe, causes the serious wasting of resources and economic loss.Meanwhile considering the improvement of air environment, I
State widelys popularize wind-powered electricity generation cleaning heating technology, and substitution coal-burning boiler heating becomes wind-powered electricity generation on-site elimination, solves abandonment is rationed the power supply one
A important channel, and realize the important means of minimum discharge and reducing energy consumption.
Wind-powered electricity generation cleaning heating Main Patterns utilize power supply using electric boiler as heat source for electric boiler heat storage type heating system
Electricity charge peak valley difference value is heated, and be stored in heat-storing device, water storage in the power supply valley period by heating agent of water
Pump is continuously run, and maintains heat accumulation water tank temperature in setting value.Part electric boiler is turned off or in power supply peak period, by storing
Hot water in heat accumulation water pot is pumped through system circulation to heating system heat supply.
Heat-storing device is divided into normal pressure and has two classes of pressure, has pressure heat-storing device heat accumulation coolant-temperature gage to be usually less than 120 DEG C, and normal pressure
Its heat accumulation coolant-temperature gage of heat-storing device is less than 98 DEG C, the former is seldom used at present.The operation of heat-storing device (heat storage can) is not according to
The hot and cold water principle of stratification of synthermal its density variation of water, the high water supply of temperature are in the upper area of heat-storing device, and warm
Spend the lower area that low return water is in heat-storing device.
And currently, heat accumulation coolant-temperature gage is typically rule of thumb estimated, then its value is manually entered, then via electric boiler
Setting is realized in DCS system control.Due to the rough property of empirical estimating, it can not determine that heat-storing device is stored up in the power supply valley period
Can the heat that deposited meet heat user thermic load needed for electric boiler shut-in time section (power spikes period), and or heat accumulation
Amount be higher by heat user the electric boiler shut-in time section (power spikes period) needed for thermic load it is more, so as to cause unnecessary
The problem of thermal loss is larger, waste of energy.Therefore, heat accumulation operation automatic control and management is also the pass of heat storing type electric boiler energy-saving
Key.
Summary of the invention
The present invention provides a kind of heat storing type electric boiler heat accumulation control method and dedicated units, overcome the above-mentioned prior art
Deficiency, can effectively solve existing electric boiler heat-storage technology cannot on-demand heat accumulation, thus the problem of causing larger thermal loss.
Technical solution of the present invention first is that being realized by following measures: a kind of heat storing type electric boiler heat accumulation controlling party
Method carries out as follows: flat further according to electricity price peak according to the thermic load of weather forecast data forecasted electricity market price peak Pinggu at times
The heat load prediction value of paddy day part, controls the operating status of electric boiler；When the period is electricity price paddy early period period, electric boiler list
Only heat supply, electric boiler export the hot water of relevant temperature according to electricity price paddy period heat load prediction value early period, provide heat for heat user
Amount；When the period is electricity price paddy later period period, electric boiler provides heat simultaneously for heat user, provides quantity of heat storage for heat accumulation water pot,
Its heating load determines by the heat load prediction value in later period electricity price paddy period, quantity of heat storage by the electricity price paddy period subsequent linking electricity
Valence peak usually section heat load prediction value determine；When the period is section when electricity price peak is flat, electric boiler is out of service, when by electricity price paddy
The quantity of heat storage of section later period heat accumulation water pot is individually for heat user heat supply.
Here is further optimization or/and improvement of one of the above technical solutions of the invention:
Above-mentioned later period electricity price paddy period, electric boiler provide the method for quantity of heat storage for heat accumulation water pot, carry out as follows: according to this
The volume of the electricity price peak of electricity price paddy period subsequent linking usually section heat load prediction value and heat accumulation water pot, in conjunction with the heat of heat accumulation water pot
Coefficient is damaged, sets the heat accumulation water temperature of heat accumulation water pot, after the heat accumulation water temperature of heat accumulation water pot reaches set temperature, electric boiler stops to storage
Hot-water cylinder provides heat, stops heat accumulation.
Technical solution of the present invention second is that being realized by following measures: stored up described in a kind of one of implementation technical solution
The dedicated unit of hot type electric boiler heat accumulation control method, including electric boiler, heat accumulation water pot, control module, heat load prediction module,
First Heat Exchanger and the second heat exchanger；A side-entrance for water end (W.E.) and First Heat Exchanger for electric boiler passes through the first water supply line
Connection, a side outlet of First Heat Exchanger are connected to the backwater end of electric boiler by the first water return pipeline, and heat accumulation water pot goes out
The mouth of a river is connected to the secondary side-entrance of First Heat Exchanger by the second water return pipeline, the secondary side outlet and heat accumulation of First Heat Exchanger
The water inlet of water pot is connected to by the second water supply line, and a side-entrance of the second heat exchanger is with the second water supply line by discharging water
Pipeline connection, a side outlet of the second heat exchanger is connected to the second water return pipeline by third water return pipeline, in third return water
Electric three-way regulating valves are serially connected on pipeline, the third port of electric three-way regulating valves and the first water return pipeline pass through the 4th return water
Pipeline connection, the first water supply line is connected to blow-off line by third water supply line, in the secondary side outlet of the second heat exchanger
It is communicated with user's water supply line；
It is being provided with the first temperature sensor on first water supply line of the electric boiler for water end (W.E.), is being gone here and there on the first water supply line
It is connected to the first electric control valve, is provided with second on the second water supply line between blow-off line and the water inlet of heat accumulation water pot
Temperature sensor is provided with the second electricity on the second water supply line between blow-off line and the secondary side outlet of First Heat Exchanger
Dynamic regulating valve, is serially connected with third electric control valve on third water supply line, in going out for electric three-way regulating valves and heat accumulation water pot
Third temperature sensor and the 4th electric control valve are installed on the second water return pipeline between the mouth of a river, concatenated on blow-off line
There is the 5th electric control valve, is serially connected on the blow-off line between third water supply line and a side-entrance of the second heat exchanger
First valve is provided with the 4th temperature sensor on user's water supply line；
Heat load prediction module is electrically connected or communicates to connect with control module, the control signal input of electric boiler, the first temperature
Sensor, second temperature sensor, third temperature sensor, the 4th temperature sensor, the first electric control valve, the second electric adjustable
Save valve, third electric control valve, the 4th electric control valve, the 5th electric control valve, electric three-way regulating valves and control module
Electrical connection or communication connection.
Here is further optimization or/and improvement of the technical scheme ii of the invention:
Above-mentioned weather forecast data-interface is electrically connected or communicates to connect with heat load prediction module.
Above-mentioned control module includes the first control module, the second control module and third control module, the second control module
It is communicated to connect with third control module, electric boiler is provided with the DCS control module that can control grill pan furnace operating state；First control
Module, the second control module and third control module are electrically connected or communicate to connect with heat load prediction module respectively, the first temperature
Sensor, third electric control valve, electric three-way regulating valves, the 4th temperature sensor are electrically connected with the first control module respectively；
DCS control module, the first electric control valve, the second electric control valve, the 4th electric control valve, second temperature sensor, third
Temperature sensor, the 4th temperature sensor are electrically connected with the second control module respectively；DCS control module, the 5th electric control valve
It is electrically connected respectively with third control module.
Boiler recirculated water is serially connected on the first water supply line between above-mentioned first temperature sensor and third water supply line
It pumps, is serially connected with heat accumulation water circulating pump on the second water return pipeline between heat accumulation water pot water outlet and the 4th electric control valve,
It is serially connected with heat release water circulating pump on blow-off line between 5th electric control valve and third water supply line, in heat release water circulating pump
The second valve is serially connected on blow-off line between third water supply line；The control signal input of heat accumulation water circulating pump and the
The electrical connection of two control modules；The control signal input of heat release water circulating pump is electrically connected with third control module.
Blow-off line and electric three-way regulating valves and the second heat exchanger between above-mentioned third water supply line and the first valve
Third water return pipeline between side outlet is connected to by by-pass line, and by-passing valve is serially connected on by-pass line, is being bypassed
Third valve is serially connected on third water return pipeline between side outlet of pipeline and the second heat exchanger.
Above-mentioned electric boiler is for being provided with temperature protector on the first water supply line between water end (W.E.) and the first temperature sensor；
Or/and First Heat Exchanger and the second heat exchanger are all made of plate heat exchanger.
The method of the invention by predicting the thermic load of following electricity price peak Pinggu period with weather forecast data, realize with
Outdoor weather condition is the heat load prediction of impact factor, and paddy electricity is made full use of to be heat user heat supply and be peak usually section heat accumulation,
It to save more flat, peak period electricity consumptions, so recycles, realizes on-demand heat accumulation, according to the principle that need to store up balance, reduce heat
Damage, and reach maximum energy-saving run, while meeting peak Pinggu day part heat demand, additionally it is possible to reduce electric boiler
Operating cost.
Detailed description of the invention
Attached drawing 1 is process flow diagram of the invention.
Coding in attached drawing is respectively as follows: 1 for electric boiler, and 2 be heat accumulation water pot, and 3 be heat load prediction module, and 4 change for first
Hot device, 5 be the second heat exchanger, and 6 be the first water supply line, and 7 be the first water return pipeline, and 8 be the second water return pipeline, and 9 supply for second
Waterpipe, 10 be blow-off line, and 11 be third water return pipeline, and 12 be electric three-way regulating valves, and 13 be the 4th water return pipeline, and 14 are
Third water supply line, 15 be user's water supply line, and 16 be the first temperature sensor, and 17 be the first electric control valve, and 18 be second
Temperature sensor, 19 be the second electric control valve, and 20 be third electric control valve, and 21 be third temperature sensor, and 22 be the 4th
Electric control valve, 23 be the 5th electric control valve, and 24 be the first valve, and 25 be the 4th temperature sensor, and 26 be the first control mould
Block, 27 be the second control module, and 28 be third control module, and 29 be DCS control module, and 30 be boiler cycle pump, and 31 be storage
Thermal cycle water pump, 32 be heat release water circulating pump, and 33 be the second valve, and 34 be by-pass line, and 35 be by-passing valve, and 36 be third valve
Door, 37 be temperature protector, and 38 be weather forecast.
Specific embodiment
The present invention is not limited by the following examples, can determine according to the technique and scheme of the present invention with actual conditions specific
Embodiment.It is previously mentioned various chemical reagent and chemical article in the present invention unless otherwise specified, is public in the prior art
Know common chemical reagent and chemical article；Percentage in the present invention does not have specified otherwise such as, is mass percent；This hair
It is the aqueous solution that solvent is water, for example, hydrochloric acid solution is aqueous hydrochloric acid solution if the solution in bright is without specified otherwise；This
Room temperature, room temperature in invention refer generally to 15 DEG C to 25 DEG C of temperature, are commonly defined as 25 DEG C.
In the present invention, for ease of description, the description of the relative positional relationship of each component is according to Figure of description 1
Butut mode be described, such as: front, rear, top, and bottom, left and right positional relationship be the cloth according to Figure of description 1
Figure direction determines.
The present invention will be further described below with reference to examples:
Embodiment 1: the heat storing type electric boiler heat accumulation control method carries out as follows: being predicted according to 38 data of weather forecast
The thermic load of electricity price peak Pinggu at times controls the fortune of electric boiler 1 further according to the heat load prediction value of electricity price peak Pinggu day part
Row state；When the period is electricity price paddy early period period, the independent heat supply of electric boiler 1, electric boiler 1 is born according to electricity price paddy period heat early period
Lotus predicted value exports the hot water of relevant temperature, provides heat for heat user；When the period is electricity price paddy later period period, electric boiler 1
Heat is provided for heat user simultaneously, is that heat accumulation water pot 2 provides quantity of heat storage, and heating load is pre- by the thermic load in later period electricity price paddy period
Measured value determines that quantity of heat storage is determined by the heat load prediction value of the electricity price peak usually section of the electricity price paddy period subsequent linking；At that time
Section be electricity price peak usually section when, electric boiler 1 is out of service, is individually for heat by the quantity of heat storage of electricity price paddy period later period heat accumulation water pot 2
User's heat supply.
The method of the invention is by predicting following electricity price peak Pinggu period with 38 data of weather forecast (refering in particular to temperature)
Thermic load is realized using outdoor weather condition as the heat load prediction of impact factor, paddy electricity is made full use of to be heat user heat supply and be
Peak usually section heat accumulation so recycles to save more flat, peak period electricity consumptions, realizes on-demand heat accumulation, according to need to store up balance
Principle reduces heat waste, and reaches maximum energy-saving run, while meeting peak Pinggu day part heat demand, additionally it is possible to
Reduce the operating cost of electric boiler 1.
Further, consider extreme weather, i.e. the thermal load demands of peak usually section are too big, heat accumulation water pot 2 due to volume and
The limitation of water temperature can not store the heat of meet demand, when 2 side water supply water temperature value of heat accumulation water pot is lower than heat user side water supply pipe
Minimum design temperature when, start electric boiler 1, it is ensured that provide the heat of meet demand for heat user.
Using 38 data of weather forecast as impact factor, and the mount of using heat of the heat user in peak Pinggu period is combined, it is flat to obtain peak
Paddy period heat load prediction value.
The electricity price paddy period is divided into early period electricity price paddy period and later period electricity price paddy period, early period electricity price paddy period and electricity price paddy
The duration in later period period is flexible, can be determined according to actual needs.
Embodiment 2: as the optimization of above-described embodiment, later period electricity price paddy period, electric boiler 1 is that heat accumulation water pot 2 provides storage
The method of heat carries out as follows: according to the electricity price peak of the electricity price paddy period subsequent linking usually section heat load prediction value
The heat accumulation water temperature of heat accumulation water pot 2 is set in conjunction with the heat loss coefficient of heat accumulation water pot 2 with the volume of heat accumulation water pot 2, heat accumulation water pot 2
After heat accumulation water temperature reaches set temperature, electric boiler 1 stops providing heat to heat accumulation water pot 2, stops heat accumulation.
According to heat formula Q1+Q22 hot water set temperature of heat accumulation water pot, Q can be obtained in=cm △ t1For heat load prediction value, Q2
For the heat waste of heat accumulation water pot 2, c is the specific heat capacity of water, and m is the quality of water, and △ t is temperature variation, △ t=t1-t2,t1For heat accumulation
The set temperature of water pot 2, t2For the initial temperature of heat accumulation water pot 2.
Embodiment 3: as shown in Fig. 1, implement the dedicated unit of above-mentioned heat storing type electric boiler heat accumulation control method, including electricity
Boiler 1, heat accumulation water pot 2, control module, heat load prediction module 3, First Heat Exchanger 4 and the second heat exchanger 5；The confession of electric boiler 1
Water end (W.E.) and a side-entrance of First Heat Exchanger 4 be connected tos by the first water supply line 6, a side outlet of First Heat Exchanger 4 and
The backwater end of electric boiler 1 is connected to by the first water return pipeline 7, the secondary side of the water outlet of heat accumulation water pot 2 and First Heat Exchanger 4 into
Mouth is connected to by the second water return pipeline 8, and the secondary side outlet of First Heat Exchanger 4 and the water inlet of heat accumulation water pot 2 pass through the second confession
Waterpipe 9 is connected to, and a side-entrance of the second heat exchanger 5 is connected to the second water supply line 9 by blow-off line 10, the second heat exchange
Side outlet of device 5 is connected to the second water return pipeline 8 by third water return pipeline 11, is serially connected on third water return pipeline 11
Electric three-way regulating valves 12, the third port of electric three-way regulating valves 12 and the first water return pipeline 7 pass through the 4th water return pipeline 13
Connection, the first water supply line 6 are connected to by third water supply line 14 with blow-off line 10, are gone out in the secondary side of the second heat exchanger 5
Mouth is communicated with user's water supply line 15；
It is being provided with the first temperature sensor 16 on first water supply line 6 of the electric boiler 1 for water end (W.E.), in the first water supply line
The first electric control valve 17 is serially connected on 6, the second water supply line 9 between blow-off line 10 and the water inlet of heat accumulation water pot 2
On be provided with second temperature sensor 18, between blow-off line 10 and the secondary side outlet of First Heat Exchanger 4 second supply water
It is provided with the second electric control valve 19 on pipeline 9, third electric control valve 20 is serially connected on third water supply line 14, electronic
Be equipped on the second water return pipeline 8 between three-way control valve 12 and the water outlet of heat accumulation water pot 2 third temperature sensor 21 and
4th electric control valve 22 is serially connected with the 5th electric control valve 23 on blow-off line 10, in third water supply line 14 and second
It is serially connected with the first valve 24 on blow-off line 10 between side-entrance of heat exchanger 5, is arranged on user's water supply line 15
There is the 4th temperature sensor 25；
Heat load prediction module 3 is electrically connected or communicates to connect with control module, the control signal input of electric boiler 1, the first temperature
Spend sensor 16, second temperature sensor 18, third temperature sensor 21, the 4th temperature sensor 25, the first electric control valve
17, the second electric control valve 19, third electric control valve 20, the 4th electric control valve 22, the 5th electric control valve 23, electronic three
Logical regulating valve 12 is electrically connected or is communicated to connect with control module.
After the heat load prediction value for obtaining electricity price peak Pinggu day part by heat load prediction module 3, when rate period is
When early period electricity price paddy period, electric boiler 1 is that heat user is provided separately heat, and control module passes through the first temperature sensor 16 and the
The temperature data of four temperature sensors 25 acquisition, adjusts the aperture of third electric control valve 20, electric three-way regulating valves 12 in real time
And circulating direction, the first valve 24 is opened, the hot water in electric boiler 1 is after third water supply line 14 enters the second heat exchanger 5
Heat is provided for heat user, return water of 1 hot water of electric boiler after the heat exchange cooling of the second heat exchanger 5 successively passes through third return pipe
After road 11, electric three-way regulating valves 12, returned in electric boiler 1 using the 4th water return pipeline 13, the first water return pipeline 7；
When the period is electricity price paddy later period period, electric boiler 1 not only provides hot water, grill pan to heat user by the second heat exchanger 5
1 another part hot water of furnace into 4 primary side of First Heat Exchanger and passes through the second return pipe after the first electric control valve 17
The water in heat accumulation water pot 2 that road 8 comes exchanges heat, i.e., heats to the water in heat accumulation water pot 2, exchanges heat by First Heat Exchanger 4
Boiler blow-down water after cooling is returned in electric boiler 1 by the first water return pipeline 7, the storage after the heat exchange heating of First Heat Exchanger 4
2 water of hot-water cylinder is entered in heat accumulation water pot 2 by the second water supply line 9, and the water in heat accumulation water pot 2 is repeatedly constantly warm with electric boiler 1
Water heat exchange, until reaching heat accumulation requirement；Its temperature data fed back by all temperature sensors, control remove the 5th motorized adjustment
Electric control valve other than valve 23, realizes on one side be heat user heat supply, heats the water in heat accumulation water pot 2 on one side, is next
Usually section prepares enough heats at electricity price peak；
When the period is section when electricity price peak is flat, electric boiler 1 is shut down by control module, the 5th electric adjustable is opened by control module
Valve 23 is saved, the hot water in heat accumulation water pot 2 sequentially after the second water supply line 9, blow-off line 10, is by the second heat exchanger 5
Heat user provides heat, and 2 hot water of heat accumulation water pot sequentially passes through third water return pipeline 11, electricity from the return water that the second heat exchanger 5 comes out
Dynamic three-way control valve 12, the second water return pipeline 8 return in heat accumulation water pot 2, so recycle, and are continuously heat user and provide heat.
From the above mentioned it is found that the present apparatus is by predicting that the heat of following electricity price peak Pinggu period is negative with 38 data of weather forecast
Lotus is realized using outdoor weather condition as the heat load prediction of impact factor, and realizes the operation of electric boiler 1 certainly by control module
Control adjusts operating parameter according to actual heat demand, paddy electricity is made full use of to be heat user heat supply and be peak usually section heat accumulation, with
More flat, peak period electricity consumptions are saved, so recycles, realizes on-demand heat accumulation, according to the principle that need to store up balance, reduce heat waste,
And reach maximum energy-saving run, while meeting peak Pinggu day part heat demand, additionally it is possible to reduce the fortune of electric boiler 1
Row expense.
In addition, this dedicated unit also has advantages in that
1, in peak usually section, reach maximum energy conservation model according to the principle of the preferential heat supply of heat accumulation water pot 2, reduce
Operating cost；
2, automatic monitoring comprehensively is carried out to heat supply and heat accumulation process, automatic control is horizontal high, safe and reliable to operation, can it is more accurate,
Heating load and quantity of heat storage are neatly adjusted, and adjusts heat supply mode；
3, by peak Pinggu, heat load prediction function, the present apparatus can more precisely determine quantity of heat storage according to thermal load demands at times,
Ensure to reduce heat storage can heat waste while meeting thermal load demands, keeps whole device more energy saving.
38 data time interval of weather forecast can be 1 hour, and heat load prediction module 3 can be embedded with revisable electricity price peak
Pinggu at times, in this way, device is made to be applicable to different regions, in different regions in use, modification electricity price peak Pinggu can be passed through
At times, to be adapted at times with local electricity price peak Pinggu.
Above-mentioned dedicated unit can be made further optimization and/or improvements according to actual needs:
As needed, 38 data-interface of weather forecast is electrically connected or communicates to connect with heat load prediction module 3.
As shown in Fig. 1, control module includes the first control module 26, the second control module 27 and third control module
28, the second control module 27 and third control module 28 communicate to connect, and electric boiler 1, which is provided with, can control 1 operating status of electric boiler
DCS control module 29；First control module 26, the second control module 27 and third control module 28 respectively with heat load prediction
The electrical connection of module 3 or communication connection, the first temperature sensor 16, third electric control valve 20, electric three-way regulating valves the 12, the 4th
Temperature sensor 25 is electrically connected with the first control module 26 respectively；DCS control module 29, first the 17, second electricity of electric control valve
Dynamic regulating valve 19, the 4th electric control valve 22, second temperature sensor 18, third temperature sensor 21, the 4th temperature sensor
25 are electrically connected with the second control module 27 respectively；DCS control module 29, the 5th electric control valve 23 respectively with third control module
28 electrical connections.
Control module 29 is the DCS control system of mature application in existing well-known technique.
The heat load prediction module 3, the first temperature sensor 16 and the 4th temperature sensor 25 pass through the first control
Molding block 26 is electrically connected with third electric control valve 20, electric three-way regulating valves 12, realizes that electric boiler 1 provides heat for heat user
Control；
The heat load prediction module 3 and the second temperature sensor 18, third temperature sensor 21, the 4th temperature sensor
25 by the DCS control system of the second control module 27 and electric boiler 1, the first electric control valve 17, the second electric control valve 19,
4th electric control valve 22, electrical connection, realize electric boiler 1 simultaneously be heat user heat supply, be 2 heat accumulation of heat accumulation water pot control；
The heat load prediction module 3 passes through DCS control system, the 5th motorized adjustment of third control module 28 and electric boiler 1
Valve 23 connects, and the third control module 28 is electrically connected with the second control module 27, makes third control module 28 that can obtain second
The temperature data of temperature sensor 18, the 4th temperature sensor 25, realization 1 start and stop of electric boiler and 2 exothermic process of heat accumulation water pot
Control.
As shown in Fig. 1, it is concatenated on the first water supply line 6 between the first temperature sensor 16 and third water supply line 14
There is boiler cycle pump 30, is concatenated on the second water return pipeline 8 between 2 water outlet of heat accumulation water pot and the 4th electric control valve 22
There is heat accumulation water circulating pump 31, is serially connected with and puts on the blow-off line 10 between the 5th electric control valve 23 and third water supply line 14
Thermal cycle water pump 32 is serially connected with the second valve on the blow-off line 10 between heat release water circulating pump 32 and third water supply line 14
33；The control signal input of heat accumulation water circulating pump 31 is electrically connected with the second control module 27；The control of heat release water circulating pump 32
Signal input part is electrically connected with third control module 28.
Hot water in electric boiler 1 is pumped out by boiler cycle pump 30；When heat accumulation 2 heat accumulation of water pot, pass through heat accumulation recirculated water
Pump 31 draws water；When 2 heat release of heat accumulation water pot (for heat user heat supply), drawn water by heat release water circulating pump 32.
As shown in Fig. 1, the blow-off line 10 between third water supply line 14 and the first valve 24 and electric three passes are adjusted
Third water return pipeline 11 between 5 side outlets of valve 12 and the second heat exchanger is connected to by by-pass line 34, in by-pass line
By-passing valve 35 is serially connected on 34, on the third water return pipeline 11 between 5 side outlets of by-pass line 34 and the second heat exchanger
It is serially connected with third valve 36.
As shown in Fig. 1, electric boiler 1 overheats in order to prevent, and electric boiler 1 is between water end (W.E.) and the first temperature sensor 16
Temperature protector 37 is provided on first water supply line 6；Or/and First Heat Exchanger 4 and the second heat exchanger 5 are all made of board-like change
Hot device.
The above technical features constitute embodiments of the present invention, can basis with stronger adaptability and implementation result
Actual needs increases and decreases non-essential technical characteristic, to meet the needs of different situations.
Claims (10)
1. a kind of heat storing type electric boiler heat accumulation control method, it is characterised in that carry out as follows: according to weather forecast data
The thermic load of forecasted electricity market price peak Pinggu at times controls electric boiler further according to the heat load prediction value of electricity price peak Pinggu day part
Operating status；When the period is electricity price paddy early period period, the independent heat supply of electric boiler, electric boiler is according to warm early period electricity price paddy period
Predicted load exports the hot water of relevant temperature, provides heat for heat user；When the period is electricity price paddy later period period, electric boiler
Heat is provided for heat user simultaneously, quantity of heat storage is provided for heat accumulation water pot, and heating load is pre- by the thermic load in later period electricity price paddy period
Measured value determines that quantity of heat storage is determined by the heat load prediction value of the electricity price peak usually section of the electricity price paddy period subsequent linking；At that time
Section be electricity price peak usually section when, electric boiler is out of service, and by the electricity price paddy period, the quantity of heat storage of later period heat accumulation water pot is individually for hot use
Family heat supply.
2. heat storing type electric boiler heat accumulation control method according to claim 1, it is characterised in that later period electricity price paddy period, electricity
Boiler provides the method for quantity of heat storage for heat accumulation water pot, carries out as follows: according to the electricity price of the electricity price paddy period subsequent linking
The volume of peak usually section heat load prediction value and heat accumulation water pot sets the storage of heat accumulation water pot in conjunction with the heat loss coefficient of heat accumulation water pot
Hot water temperature, after the heat accumulation water temperature of heat accumulation water pot reaches set temperature, electric boiler stops providing heat to heat accumulation water pot, stops storage
Heat.
3. a kind of dedicated unit for implementing heat storing type electric boiler heat accumulation control method according to claim 1 or 2, feature
It is to include electric boiler, heat accumulation water pot, control module, heat load prediction module, First Heat Exchanger and the second heat exchanger；Electric boiler
Be connected to a side-entrance of First Heat Exchanger by the first water supply line for water end (W.E.), side outlet of First Heat Exchanger with
The backwater end of electric boiler is connected to by the first water return pipeline, and the secondary side-entrance of the water outlet and First Heat Exchanger of heat accumulation water pot is logical
The connection of the second water return pipeline is crossed, the secondary side outlet of First Heat Exchanger and the water inlet of heat accumulation water pot are connected by the second water supply line
Logical, a side-entrance of the second heat exchanger is connected to the second water supply line by blow-off line, and the primary side of the second heat exchanger goes out
Mouth is connected to the second water return pipeline by third water return pipeline, and electric three-way regulating valves are serially connected on third water return pipeline, electricity
The third port of dynamic three-way control valve is connected to the first water return pipeline by the 4th water return pipeline, the first water supply line and discharge tube
Road is connected to by third water supply line, has user's water supply line in the secondary side outlet of the second heat exchanger；
It is being provided with the first temperature sensor on first water supply line of the electric boiler for water end (W.E.), is being gone here and there on the first water supply line
It is connected to the first electric control valve, is provided with second on the second water supply line between blow-off line and the water inlet of heat accumulation water pot
Temperature sensor is provided with the second electricity on the second water supply line between blow-off line and the secondary side outlet of First Heat Exchanger
Dynamic regulating valve, is serially connected with third electric control valve on third water supply line, in going out for electric three-way regulating valves and heat accumulation water pot
Third temperature sensor and the 4th electric control valve are installed on the second water return pipeline between the mouth of a river, concatenated on blow-off line
There is the 5th electric control valve, is serially connected on the blow-off line between third water supply line and a side-entrance of the second heat exchanger
First valve is provided with the 4th temperature sensor on user's water supply line；
Heat load prediction module is electrically connected or communicates to connect with control module, the control signal input of electric boiler, the first temperature
Sensor, second temperature sensor, third temperature sensor, the 4th temperature sensor, the first electric control valve, the second electric adjustable
Save valve, third electric control valve, the 4th electric control valve, the 5th electric control valve, electric three-way regulating valves and control module
Electrical connection or communication connection.
4. dedicated unit according to claim 3, it is characterised in that weather forecast data-interface and heat load prediction module
Electrical connection or communication connection.
5. dedicated unit according to claim 3 or 4, it is characterised in that control module includes the first control module, second
Control module and third control module, the second control module and the communication connection of third control module, electric boiler, which is provided with, can control
The DCS control module of grill pan furnace operating state；First control module, the second control module and third control module are negative with heat respectively
The electrical connection of lotus prediction module or communication connection, the first temperature sensor, third electric control valve, electric three-way regulating valves, the 4th
Temperature sensor is electrically connected with the first control module respectively；DCS control module, the first electric control valve, the second electric control valve,
4th electric control valve, second temperature sensor, third temperature sensor, the 4th temperature sensor respectively with the second control module
Electrical connection；DCS control module, the 5th electric control valve are electrically connected with third control module respectively.
6. dedicated unit according to claim 5, it is characterised in that between the first temperature sensor and third water supply line
The first water supply line on be serially connected with boiler cycle pump, second between heat accumulation water pot water outlet and the 4th electric control valve
It is serially connected with heat accumulation water circulating pump on water return pipeline, is gone here and there on the blow-off line between the 5th electric control valve and third water supply line
It is connected to heat release water circulating pump, is serially connected with the second valve on the blow-off line between heat release water circulating pump and third water supply line；
The control signal input of heat accumulation water circulating pump is electrically connected with the second control module；The control signal input of heat release water circulating pump
It is electrically connected with third control module.
7. according to dedicated unit described in claim 3 or 4 or 6, it is characterised in that between third water supply line and the first valve
Side outlet of blow-off line and electric three-way regulating valves and the second heat exchanger between third water return pipeline pass through bypass pipe
Road connection, is serially connected with by-passing valve on by-pass line, and the third between side outlet of by-pass line and the second heat exchanger is returned
Third valve is serially connected on waterpipe.
8. dedicated unit according to claim 5, it is characterised in that discharging water between third water supply line and the first valve
Third water return pipeline between pipeline and electric three-way regulating valves and side outlet of the second heat exchanger is connected to by by-pass line,
By-passing valve is serially connected on by-pass line, on the third water return pipeline between side outlet of by-pass line and the second heat exchanger
It is serially connected with third valve.
9. according to dedicated unit described in claim 3 or 4 or 6 or 8, it is characterised in that electric boiler is passed for water end (W.E.) and the first temperature
Temperature protector is provided on the first water supply line between sensor；Or/and First Heat Exchanger and the second heat exchanger are all made of plate
Formula heat exchanger.
10. dedicated unit according to claim 5, it is characterised in that electric boiler is between water end (W.E.) and the first temperature sensor
The first water supply line on be provided with temperature protector；Or/and First Heat Exchanger and the second heat exchanger are all made of plate-type heat-exchange
Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811296762.5A CN109340903A (en) | 2018-11-01 | 2018-11-01 | Heat storing type electric boiler heat accumulation control method and dedicated unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811296762.5A CN109340903A (en) | 2018-11-01 | 2018-11-01 | Heat storing type electric boiler heat accumulation control method and dedicated unit |
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| CN109340903A true CN109340903A (en) | 2019-02-15 |
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| CN201811296762.5A Pending CN109340903A (en) | 2018-11-01 | 2018-11-01 | Heat storing type electric boiler heat accumulation control method and dedicated unit |
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