CN110873356A - System and method for implementing refined adjustment and multi-energy complementary transformation on heat supply - Google Patents

System and method for implementing refined adjustment and multi-energy complementary transformation on heat supply Download PDF

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CN110873356A
CN110873356A CN201911334314.4A CN201911334314A CN110873356A CN 110873356 A CN110873356 A CN 110873356A CN 201911334314 A CN201911334314 A CN 201911334314A CN 110873356 A CN110873356 A CN 110873356A
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heat supply
building
electrode
reversing valve
medium
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CN110873356B (en
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王海鸿
张立申
陈飞
李仲博
荀志国
孙鹏
汉京晓
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BEIJING DISTRICT HEATING GROUP Co Ltd
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BEIJING DISTRICT HEATING GROUP Co Ltd
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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
    • F24D11/00—Central heating systems using heat accumulated in storage masses
    • F24D11/002—Central heating systems using heat accumulated in storage masses water heating system
    • F24D11/004—Central heating systems using heat accumulated in storage masses water heating system with conventional supplementary heat source
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00—Details
    • F24D19/10—Arrangement or mounting of control or safety devices
    • F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
    • F24D19/1009—Arrangement or mounting of control or safety devices for water heating systems for central heating
    • F24D19/1015—Arrangement or mounting of control or safety devices for water heating systems for central heating using a valve or valves
    • 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
    • F24D19/1096—Arrangement or mounting of control or safety devices for electric heating systems
    • 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
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/22—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
    • F24H1/225—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating electrical central heating boilers
    • 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
    • F24H9/18—Arrangement or mounting of grates or heating means
    • F24H9/1809—Arrangement or mounting of grates or heating means for water heaters
    • F24H9/1818—Arrangement or mounting of electric heating means
    • 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
    • F24D2200/00—Heat sources or energy sources
    • F24D2200/08—Electric heater

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  • 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)
  • Heat-Pump Type And Storage Water Heaters (AREA)

Abstract

A system and method for implementing fine adjustment and multi-energy complementary transformation of heat supply. The invention is suitable for northern residents and public building areas, realizes the heat storage of the valley electricity or the direct heat supplement of the valley electricity by utilizing a large amount of valley electricity surplus of the system at night, and assists the heat supply of the heat supply network while realizing the full utilization of the valley electricity. The invention cancels the traditional heating power station, sets a small-sized heat exchange device in front of the building, heats the building heat supply medium through the heat exchange device to realize the fine adjustment of the building heat supply, and solves the problem of imbalance between the buildings. The invention realizes electric heat storage by using the electrode boiler and the heat storage tank, and is arranged in parallel with the building unit to supply heat to the building. The invention can enlarge the heat supply area under the condition of not changing the capacity of the pipe network and the heat source.

Description

System and method for implementing refined adjustment and multi-energy complementary transformation on heat supply
Technical Field
The invention relates to the field of heat supply terminal equipment, in particular to a system and a method for implementing refined adjustment and multi-energy complementary transformation on heat supply.
Background
The existing heating power pipe network is influenced by factors such as pipeline arrangement, heating power transmission radius and the like, and is gradually difficult to adapt to the urban expansion speed. The problem of insufficient heat supply exists in partial residents and public building areas in cities for a long time.
Meanwhile, the areas with insufficient heat supply often have a large amount of valley electricity surplus at night due to the characteristics of users, the electric energy is not high in utilization efficiency generally, and a large proportion of the electric energy is wasted.
Disclosure of Invention
The system and the method for implementing refined adjustment and multi-energy complementary transformation on heat supply are provided for overcoming the defects of the prior art. The invention specifically adopts the following technical scheme.
Firstly, in order to achieve the above object, a system for implementing fine adjustment and multi-energy complementary transformation of heat supply is provided, which comprises: the heat exchange device is arranged in front of a building, the heat exchange device receives a heat source in a pipe network to heat a building heat supply medium, a medium output end of the heat exchange device is connected with a building heat supply pipe, the medium output end outputs the heated building heat supply medium, a medium input end of the heat exchange device is connected with a building water return pipe, and the medium input end receives the building heat supply medium cooled after the building supplies heat; the input end of the electrode boiler is connected with the building water return pipe, the electrode boiler receives a building heat supply medium which is cooled after heat supply is carried out on the building when the power utilization condition is met, the electrode arranged in the electrode boiler is driven, eddy currents are generated on the surfaces of the electrode disks arranged on the electrodes, and the building heat supply medium in the electrode boiler is heated to reach a first temperature; the heat storage tank, its input is connected the output of electrode boiler receives and saves the building heat supply medium of the first temperature of electrode boiler's output, the output of heat storage tank is connected building heating pipe exports the building heat supply medium of storing in the heat storage tank.
Optionally, the system for implementing fine adjustment and multi-energy complementary transformation for heat supply further includes: the first reversing valve is arranged between the input end of the electrode boiler and a building water return pipe, is communicated with the building water return pipe and is provided with a reversing output end capable of outputting building heat supply media to the input end of the electrode boiler; the second reversing valve is arranged between the output end of the heat storage tank and the building heat supply pipe, is communicated with the building heat supply pipe and is provided with a heat supply output end for outputting the building heat supply medium stored in the heat storage tank to the building heat supply pipe; and the control unit is simultaneously connected with the first reversing valve and the second reversing valve, controls the first reversing valve to open a reversing output end for outputting the building heat supply medium to the input end of the electrode boiler when the power utilization condition is met, and simultaneously opens a heat supply output end leading to the building heat supply medium stored in the building heat supply pipe output heat storage tank.
Optionally, the system for implementing fine adjustment and multi-energy complementary transformation for heat supply further includes: the backwater temperature sensor is arranged in the reversing output end of the first reversing valve and is used for measuring the temperature t of the building heat supply medium output to the input end of the electrode boiler; an ambient temperature sensor, disposed in the building, that measures an ambient temperature T in the building; the heat storage tank temperature sensor is arranged in the heat supply output end of the second reversing valve and is used for measuring the temperature w of the building heat supply medium output from the output end of the heat storage tank to a building heat supply pipe; a timing unit configured to output a trigger signal to the control unit every other one cycle. The control unit is also connected with the timing unit, the backwater temperature sensor, the environment temperature sensor and the heat storage tank temperature sensor at the same time for controllingThe control unit respectively acquires the temperature T of the building heat supply medium in the reversing output end of the first reversing valve, the ambient temperature T in the building and the temperature w of the building heat supply medium in the heat supply output end of the second reversing valve when receiving the trigger signal every time; the control unit further includes: and the constant calculation unit is used for respectively calculating and obtaining the temperature T of the building heat supply medium in the reversing output end of the first reversing valve, the ambient temperature T in the building and the temperature w of the building heat supply medium in the heat supply output end of the second reversing valve: proportionality constant Kp log (T-T)4(ii) a The integral constant Ki ═ w-T |; differential constant
Figure BDA0002330543300000031
Figure BDA0002330543300000032
Wherein, Δ t represents the change rate of the temperature t of the building heat-supplying medium in the reversing output end of the first reversing valve obtained by the control unit in two adjacent periods, and Δ w represents the change rate of the temperature w of the building heat-supplying medium in the heat-supplying output end of the second reversing valve in two adjacent periods; an opening degree calculation unit that calculates opening degrees of the first and second direction changing valves based on the proportional constant Kp, the integral constant Ki, and the differential constant Kd
Figure BDA0002330543300000033
Figure BDA0002330543300000034
The control unit calculates the obtained opening degree O according to the opening degree calculation uniti+1Adjusting the opening degrees of the first reversing valve and the second reversing valve; wherein, OiRepresenting the opening degrees of the first reversing valve and the second reversing valve in the previous period; o isi-1Showing the opening degrees of the first and second directional valves in the first two cycles.
Optionally, the system for performing fine adjustment and multi-energy complementary transformation on heat supply is implemented, wherein the first temperature at least reaches the temperature of a building heat supply medium in the building heat supply pipe.
Optionally, the system for performing fine adjustment and multi-energy complementary transformation on heat supply includes: the assembly plate is fixed on the surface of the outer wall of the electrode boiler, and the middle of the assembly plate is provided with a mounting hole communicated to the inner wall of the electrode boiler; the upper end of the first electrode protrudes out of the surface of the assembling plate, and the lower end of the first electrode extends into the electrode boiler from one mounting hole in the assembling plate; the upper end of the first conductive rod is connected with the lower end of the first electrode, and the lower end of the first conductive rod extends into a medium in the electrode boiler; the first electrode disc is perpendicular to the first conductive rod and is electrically connected with the first conductive rod; the upper end of the third electrode protrudes out of the surface of the assembling plate, and the lower end of the third electrode extends into the electrode boiler from another mounting hole in the assembling plate; the upper end of the third conductive rod is connected with the lower end of the third electrode, and the lower end of the third conductive rod extends into a medium in the electrode boiler; a third electrode disk perpendicular to the third conductive rod and electrically connected to the third conductive rod; the first electrode disk and the third electrode disk are arranged in pairs in a plurality of groups along the length direction of the first conductive rod and the length direction of the third conductive rod respectively, one side of the first electrode disk is close to one side of the third electrode disk, and an insulating gap is arranged between the side, close to the other side, of the first electrode disk and the side, close to the other side, of the third electrode disk.
Optionally, the above system for implementing fine adjustment and multi-energy complementary transformation on heat supply further includes: the upper end of the second electrode protrudes out of the surface of the assembling plate, and the lower end of the second electrode extends into the interior of the electrode boiler from another mounting hole in the assembling plate; the upper end of the second conductive rod is connected with the lower end of the second electrode, and the lower end of the second conductive rod extends into a medium in the electrode boiler; and the second electrode disk is perpendicular to the second conductive rods and is electrically connected with the second conductive rods, through holes for the first conductive rods and the third conductive rods to pass through are formed in the middle of the second electrode disk, and the second electrode disk is arranged between the two adjacent groups of first electrode disks and the third electrode disk at intervals along the second conductive rods.
Meanwhile, in order to achieve the purpose, the invention also provides a method for implementing fine adjustment and multi-energy complementary transformation on heat supply, which comprises the following steps: firstly, heat exchange equipment receives a heat source in a pipe network, heats a building heat supply medium which is input by a building water return pipe and used for supplying heat to a building and then is cooled, and outputs the heated building heat supply medium to a building heat supply pipe; secondly, when the power utilization condition is met, adjusting the opening degrees of the first reversing valve and the second reversing valve once every other period, enabling the electrode boiler to receive building heat supply media which are used for supplying heat to the building and cooled in a building water return pipe through the first reversing valve, driving electrodes arranged in the electrode boiler, generating eddy currents on the surfaces of electrode disks arranged on the electrodes, and heating the building heat supply media in the electrode boiler to reach a first temperature; and thirdly, the heat storage tank receives and stores the building heat supply medium with the first temperature output by the output end of the electrode boiler, and outputs the building heat supply medium stored in the heat storage tank to a building heat supply pipe communicated with the second reversing valve.
Optionally, the method for performing fine adjustment and multi-energy complementary transformation on heat supply includes: the current power utilization is valley power or green power, or the power utilization condition is that the current power utilization is night.
Optionally, in the second step and the third step, the opening degrees of the first reversing valve and the second reversing valve are controlled by the following steps: step s1, respectively acquiring the temperature T of the building heat supply medium in the reversing output end of the first reversing valve, the ambient temperature T in the building and the temperature w of the building heat supply medium in the heat supply output end of the second reversing valve in each period; step s2, calculating the proportionality constant Kp ═ log (T-T)4(ii) a The integral constant Ki ═ w-T |; differential constant
Figure BDA0002330543300000051
Wherein, delta t represents the change rate of the temperature t of the building heat supply medium in the reversing output end of the first reversing valve in two adjacent periods, and delta w represents the heat supply output of the second reversing valve in two adjacent periodsRate of change of temperature w of building heating medium in the terminal; step s3, calculating the opening degrees of the first and second direction changing valves based on the proportional constant Kp, the integral constant Ki, and the differential constant Kd
Figure BDA0002330543300000061
According to the calculated opening degree Oi+1Adjusting the opening degrees of the first reversing valve and the second reversing valve; wherein, OiRepresenting the opening degrees of the first reversing valve and the second reversing valve in the previous period; o isi-1Showing the opening degrees of the first and second directional valves in the first two cycles.
Advantageous effects
The invention is suitable for northern residents and public building areas, realizes the heat storage of the valley electricity or the direct heat supplement of the valley electricity by utilizing a large amount of valley electricity surplus of the system at night, and assists the heat supply of the heat supply network while realizing the full utilization of the valley electricity. The invention cancels the traditional heating power station, sets a small-sized heat exchange device in front of the building, heats the building heat supply medium through the heat exchange device to realize the fine adjustment of the building heat supply, and solves the problem of imbalance between the buildings. The invention realizes electric heat storage by using the electrode boiler and the heat storage tank, and is arranged in parallel with the building unit to supply heat to the building. The invention can enlarge the heat supply area under the condition of not changing the capacity of the pipe network and the heat source.
On the basis, in order to ensure that the temperature of the building heat supply medium output to the building heat supply pipe is stabilized within an effective heat supply range and the pipe medium is matched for supplying heat together, the invention further utilizes an improved PID control method to adjust the working condition of an electric heat storage device consisting of the electrode boiler and the heat storage tank in real time according to the environmental temperature and the temperature conditions of different positions in the pipeline, stabilizes the building heat supply medium output by the electric heat storage device by adjusting the circulation of the building heat supply medium in the electric heat storage device, realizes higher heat supply efficiency and stabilizes the supply of building heat sources.
Furthermore, in order to improve the heating efficiency of the electrode boiler and reduce the electric consumption of the electrode boiler, the internal electrode of the electrode boiler is further designed into an electrode disc capable of exciting eddy current, and the medium is heated more efficiently by utilizing wave current through the phase interaction of the current between the electrode discs. In particular, the invention sets the electrode discs in the electrode boiler into a plurality of groups which are arranged along the length direction of the electrodes, so that the electrode discs can heat the medium more uniformly. According to the invention, the electrode discs can independently generate eddy heating media on the surface edges of the electrode discs, and eddy currents in a wider range can be further formed between the electrode discs due to the phase matching relationship of the current, so that the heating efficiency is further improved. Insulation isolation can be further arranged between each group of electrode discs and between the two limiting electrode discs, and the electrodes are protected from working stably.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic diagram of the overall architecture of the system of the present invention for implementing fine-tuning and multi-energy complementary revamping of heating;
FIG. 2 is a schematic overall view of an electrode boiler in the system of the present invention;
FIG. 3 is a schematic view of one electrode rod in the electrode boiler shown in FIG. 2;
figure 4 is a schematic view of the plane of the second electrode disk in the electrode rod shown in figure 3;
figure 5 is a schematic view of the plane of the first electrode disk and the third electrode disk in the electrode rod shown in figure 3.
In the figure, 1 denotes a heat exchange apparatus; 2 represents a heat storage tank; 3 denotes an electrode boiler; 31 denotes a water inlet; 32 denotes a water outlet; 33 denotes an electrode; 4 denotes a building; 51 denotes a first electrode; 511 denotes a first conductive bar; 512 denotes a first electrode disk; 52 denotes a second electrode; 521 denotes a second conductive rod; 522 denotes a second electrode disk; 53 denotes a third electrode; 531 denotes a third conductive rod; 532 denotes a third electrode disk; and 54, a mounting plate.
Detailed Description
In order to make the purpose and technical solution of the embodiments of the present invention clearer, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention without any inventive step, are within the scope of protection of the invention.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
The meaning of "and/or" in the present invention means that the respective single or both of them exist individually or in combination.
The meaning of "inside and outside" in the invention means that the direction from the assembling plate of the electrode boiler to the inside of the electrode is inside, and vice versa, relative to the electrode boiler itself; and not as a specific limitation on the mechanism of the device of the present invention.
The term "connected" as used herein may mean either a direct connection between the components or an indirect connection between the components via other components.
Fig. 1 is a system for implementing fine-tuning and multi-energy complementary reforming of heat supply according to the present invention, which comprises:
the heat exchange device 1 is arranged in front of the building 4, the heat exchange device 1 receives a heat source in a pipe network to heat a building heat supply medium, the medium output end of the heat exchange device 1 is connected with a building heat supply pipe, the medium output end outputs the heated building heat supply medium, the medium input end of the heat exchange device 1 is connected with a building water return pipe, and the medium input end receives the building heat supply medium cooled after building heat supply;
the electrode boiler 3 is shown in fig. 2, an input end 31 of the electrode boiler 3 is connected with the building water return pipe, when the electrode boiler 3 meets a power utilization condition, for example, the current power utilization is valley power or green power, or in the night period, the electrode boiler 3 receives building heat supply media cooled after heat supply is performed on the building, an electrode 33 arranged inside the electrode boiler 3 is driven, eddy currents are generated on the surfaces of groups of electrode discs arranged on the electrode 33, and the building heat supply media in the electrode boiler 3 are heated to a first temperature; wherein, generally to ensure a match with the medium within a building heating pipe, the first temperature is generally set to at least the temperature of the building heating medium within the building heating pipe;
and the input end of the heat storage tank 2 is connected with the output end of the electrode boiler 3, the building heat supply medium of the first temperature output by the output end 32 of the electrode boiler 3 is received and stored, and the output end of the heat storage tank 2 is connected with the building heat supply pipe to output the building heat supply medium stored in the heat storage tank.
In order to ensure that the heat storage tank outputs the building heat supply medium matched with the heat supply medium of the building heat supply pipe, the invention further arranges temperature sensors and corresponding reversing valves for controlling the flow and the flow direction of the heat supply medium in an electric heat storage device consisting of the motor boiler and the heat storage tank at different positions in the system. Specifically, in a preferred implementation, the temperature sensor and the reversing valve may be configured to specifically include:
the first reversing valve is arranged between the input end 31 of the electrode boiler 3 and a building water return pipe, is communicated with the building water return pipe, and is provided with a reversing output end capable of outputting building heat supply media to the input end 31 of the electrode boiler 3;
the second reversing valve is arranged between the output end of the heat storage tank 2 and the building heat supply pipe, is communicated with the building heat supply pipe and is provided with a heat supply output end for outputting the building heat supply medium stored in the heat storage tank 2 to the building heat supply pipe;
a backwater temperature sensor which is arranged in the reversing output end of the first reversing valve and measures the temperature t of the building heat supply medium output to the input end 31 of the electrode boiler 3;
an ambient temperature sensor, provided in the building 4, that measures an ambient temperature T in the building;
and the heat storage tank temperature sensor is arranged in the heat supply output end of the second reversing valve and is used for measuring the temperature w of the building heat supply medium output by the output end of the heat storage tank to the building heat supply pipe.
In order to realize the matching between the heating medium of the motor boiler and the building heating pipe according to the temperature control, the system can be further provided with a timing unit, such as a timing chip, a timer or a crystal oscillator, a system clock interface and the like, which is set to output a trigger signal to a control unit at intervals of one cycle, and trigger the control unit to execute the following steps:
step s1, the control unit is simultaneously connected with the timing unit, the return water temperature sensor, the environment temperature sensor and the heat storage tank temperature sensor, and respectively obtains the temperature T of the building heat supply medium in the reversing output end of the first reversing valve, the environment temperature T in the building and the temperature w of the building heat supply medium in the heat supply output end of the second reversing valve when the control unit receives the trigger signal in each period;
step s2, when the power consumption condition is satisfied, turning on the reversing output end for outputting the building heat supply medium to the input end 31 of the electrode boiler 3, and simultaneously turning on the heat supply output end leading to the building heat supply medium stored in the building heat supply pipe output heat storage tank 2, specifically adjusting the pipeline opening degree, namely the opening degree, of the two reversing valves in the following way, and controlling the flow and the flow speed of the medium in the reversing valves:
calculating the proportionality constant Kp ═ log (T-T)4(ii) a The integral constant Ki ═ w-T |; differential constant
Figure BDA0002330543300000111
Wherein, delta t represents the change rate of the temperature t of the building heat supply medium in the reversing output end of the first reversing valve in two adjacent periods, and delta w represents the change of the temperature w of the building heat supply medium in the heat supply output end of the second reversing valve in two adjacent periodsRate;
calculating the opening degrees of the first reversing valve and the second reversing valve according to the proportional constant Kp, the integral constant Ki and the differential constant Kd
Figure BDA0002330543300000112
Figure BDA0002330543300000113
According to the calculated opening degree Oi+1Adjusting the opening degrees of the first reversing valve and the second reversing valve to enable the electrode boiler 3 to receive a building heat supply medium which is used for supplying heat to a building and then is cooled in a building water return pipe through the first reversing valve, drive an electrode 33 arranged in the electrode boiler 3, generate eddy currents on the surfaces of electrode discs of all groups arranged on the electrode 33, and heat the building heat supply medium in the electrode boiler 3 to reach a first temperature; wherein, OiRepresenting the opening degrees of the first reversing valve and the second reversing valve in the previous period; o isi-1Showing the opening degrees of the first reversing valve and the second reversing valve in the first two periods;
and step s3, receiving and storing the building heat supply medium with the first temperature output by the output end 32 of the electrode boiler 3 by the heat storage tank 2, and outputting the building heat supply medium stored in the heat storage tank to the building heat supply pipe communicated with the second reversing valve.
Referring to fig. 2, the present invention is designed to optimize the electrodes of the electrode boiler in order to ensure the heating efficiency. The electrode boiler is internally provided with a plurality of electrodes, the electrodes are arranged in parallel and are mutually connected in parallel, and the electrode structures are not directly contacted with each other. Wherein each of the electrodes may be configured as shown in fig. 3, 4 and 5:
a mounting plate 54 fixed to an outer wall surface of the electrode boiler 3, the mounting plate 54 having a mounting hole formed in a middle thereof to be communicated with an inner wall of the electrode boiler 3;
a first electrode 51, the upper end of which protrudes from the surface of the assembly plate 54, and the lower end of the first electrode 51 extends into the interior of the electrode boiler 3 from a mounting hole in the assembly plate 54;
a first conductive rod 511, the upper end of which is connected with the lower end of the first electrode 51, and the lower end of the first conductive rod 511 extends into the medium inside the electrode boiler 3;
a first electrode disk 512 perpendicular to the first conductive rod 511 and electrically connected to the first conductive rod 511;
a third electrode 53, the upper end of which protrudes from the surface of the assembling plate 54, and the lower end of the third electrode 53 extends into the electrode boiler 3 from another mounting hole in the assembling plate 54;
a third conductive rod 531, the upper end of which is connected to the lower end of the third electrode 53, and the lower end of the third conductive rod 531 extends into the medium inside the electrode boiler 3;
a third electrode disk 532 perpendicular to the third conductive rod 531 and electrically connected to the third conductive rod 531;
the first electrode disk 512 and the third electrode disk 532 are respectively arranged in pairs in the length directions of the first conductive rod 511 and the third conductive rod 531 to form a plurality of groups, one side of the first electrode disk 512 is close to one side of the third electrode disk 532, and an insulation gap is arranged between the side of the first electrode disk 512 and the side of the third electrode disk 532 which are close to each other.
Therefore, the first electrode 51 is connected with a first phase of a power supply, the third electrode is connected with a third phase of the power supply, the first electrode disc is connected through the first conducting rod to obtain an electric signal of the first phase, the third electrode disc obtains an electric signal of the third phase through the third conducting rod, a phase difference exists between the electric signals of the two phases, the electric signals are alternated, current is formed on the surface of the electrode disc, the current on the surface of the two electrode discs just forms an alternating current loop due to the phase change relationship near one side, which is close to the other, of the two electrode discs, and the current loop forms an eddy current in a large plane formed by the whole first electrode disc and the whole third electrode disc. The eddy current efficiently heats the medium near the electrode disc, and the temperature of the medium is raised.
The insulation gap can be further filled with an insulation medium or directly filled with a medium to be heated inside the electrode boiler.
In order to ensure the insulation between the electrode discs which are close to each other and prevent direct current short circuit, the invention can be further provided with:
a second electrode 52, the upper end of which protrudes out of the surface of the mounting plate 54 and is connected to the ground or the third phase of electric signal, and the lower end of the second electrode 52 extends into the electrode boiler 3 from another mounting hole in the mounting plate 54;
the upper end of the second conductive rod 521 is connected with the lower end of the second electrode 52, and the lower end of the second conductive rod 521 extends into the medium inside the electrode boiler 3;
the second electrode disk 522 is perpendicular to the second conductive rod 521, and is electrically connected to the second conductive rod 521, a through hole shown in fig. 4 is formed in the middle of the second electrode disk 522, through which the first conductive rod 511 and the third conductive rod 531 pass, and the second electrode disk 522 is arranged between two adjacent groups of first electrode disks 512 and third electrode disks 532 at intervals along the second conductive rod 521, so as to separate the first electrode disks 512 from the third electrode disks 532.
Referring to fig. 5, in order to ensure uniform distribution of eddy currents between the electrode disks and avoid local overheating of the electrode disks, the first electrode disk and the third electrode disk in each group may be disposed on the same plane. Between each group, the first electrode disk 512, the second electrode disk 522 and the third electrode disk 532 are parallel to each other, and the first conductive rod 511, the second conductive rod 521 and the third conductive rod 531 are parallel to each other and are kept in time-perpendicular connection with each corresponding electrode disk.
Also, the second conductive rod 521 may be disposed to pass through an insulation gap provided between each set of the first electrode disk 512 and the third electrode disk 532, and direct electrical contact between the first electrode disk 512, the second electrode disk 522, and the third electrode disk 532 is ensured by a filler between the insulation gaps or by the heated medium itself contained in the insulation gaps. Therefore, the heating effect of the electrodes is ensured, and meanwhile, the electrodes are further protected from being in mistaken contact and short circuit.
Therefore, the heat exchange device 1 receives a heat source in a pipe network, heats the building heat supply medium which is input by the building water return pipe and used for cooling the building after heat supply, and outputs the heated building heat supply medium to the building heat supply pipe; when the electricity utilization condition is met, the opening degrees of the first reversing valve and the second reversing valve are adjusted once every other period, so that the electrode boiler 3 receives building heat supply media which are cooled after heat supply is carried out on buildings in a building water return pipe through the first reversing valve, an electrode 33 arranged in the electrode boiler 3 is driven, eddy currents are generated on the surfaces of electrode discs of all groups arranged on the electrode 33, and the building heat supply media in the electrode boiler 3 are heated to reach a first temperature; receive and store the building heat supply medium of the first temperature that electrode boiler 3 output 32 exported by heat accumulation jar 2, to the building heat supply pipe output heat accumulation jar that second switching-over valve communicates in the building heat supply medium who stores to realize building heat supply pipe's matching, make building heat supply pipe can be stably for the user's heat supply in the building.
The invention can effectively utilize valley electricity or green electricity through the eddy current in the electrode boiler, has higher energy utilization efficiency, can improve the utilization rate of the valley electricity while supplying heat, and realizes stable heat supply for residents and public building areas.
The above are merely embodiments of the present invention, which are described in detail and with particularity, and therefore should not be construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the spirit of the present invention, and these changes and modifications are within the scope of the present invention.

Claims (9)

1. A system for providing fine-tuned and multi-energy complementary heat supply, comprising:
the heat exchange device (1) is arranged in front of a building (4), the heat exchange device (1) receives a heat source in a pipe network to heat a building heat supply medium, a medium output end of the heat exchange device (1) is connected with a building heat supply pipe, the medium output end outputs the heated building heat supply medium, a medium input end of the heat exchange device (1) is connected with a building water return pipe, and the medium input end receives the building heat supply medium cooled after the building heat supply;
the input end of the electrode boiler (3) is connected with the building water return pipe, the electrode boiler (3) receives a building heat supply medium which is cooled after heat supply is carried out on the building when the power utilization condition is met, the electrode (33) arranged in the electrode boiler (3) is driven, eddy currents are generated on the surfaces of the electrode disks arranged on the electrodes (33), and the building heat supply medium in the electrode boiler (3) is heated to reach a first temperature;
and the input end of the heat storage tank (2) is connected with the output end of the electrode boiler (3), the building heat supply medium of the first temperature output by the output end of the electrode boiler (3) is received and stored, and the output end of the heat storage tank (2) is connected with the building heat supply pipe and the building heat supply medium stored in the heat storage tank is output.
2. The system for providing heating to perform fine tuning and multi-energy complementary retrofitting of claim 1, further comprising:
the first reversing valve is arranged between the input end of the electrode boiler (3) and a building water return pipe, is communicated with the building water return pipe and is provided with a reversing output end capable of outputting building heat supply media to the input end of the electrode boiler (3);
the second reversing valve is arranged between the output end of the heat storage tank (2) and the building heat supply pipe, is communicated with the building heat supply pipe and is provided with a heat supply output end for outputting the building heat supply medium stored in the heat storage tank (2) to the building heat supply pipe;
and the control unit is simultaneously connected with the first reversing valve and the second reversing valve, controls the first reversing valve to open a reversing output end for outputting building heat supply media to the input end of the electrode boiler (3) when the power utilization condition is met, and simultaneously opens a heat supply output end leading to the building heat supply media stored in the building heat supply pipe output heat storage tank (2).
3. A system for providing heating to perform fine-tuning and multi-energy complementary retrofitting as claimed in claim 2, further comprising:
the backwater temperature sensor is arranged in the reversing output end of the first reversing valve and is used for measuring the temperature t of the building heat supply medium output to the input end of the electrode boiler (3);
an ambient temperature sensor, provided in the building (4), that measures an ambient temperature T in the building;
the heat storage tank temperature sensor is arranged in the heat supply output end of the second reversing valve and is used for measuring the temperature w of the building heat supply medium output from the output end of the heat storage tank to a building heat supply pipe;
a timing unit configured to output a trigger signal to the control unit every other one cycle,
the control unit is also simultaneously connected with the timing unit, the backwater temperature sensor, the environment temperature sensor and the heat storage tank temperature sensor, and respectively acquires the temperature T of the building heat supply medium in the reversing output end of the first reversing valve, the environment temperature T in the building and the temperature w of the building heat supply medium in the heat supply output end of the second reversing valve when receiving the trigger signal each time; the control unit further includes:
and the constant calculation unit is used for respectively calculating and obtaining the temperature T of the building heat supply medium in the reversing output end of the first reversing valve, the ambient temperature T in the building and the temperature w of the building heat supply medium in the heat supply output end of the second reversing valve: proportionality constant Kp log (T-T)4(ii) a The integral constant Ki ═ w-T |; differential constant
Figure FDA0002330543290000021
Wherein, Δ t represents the change rate of the temperature t of the building heat-supplying medium in the reversing output end of the first reversing valve obtained by the control unit in two adjacent periods, and Δ w represents the change rate of the temperature w of the building heat-supplying medium in the heat-supplying output end of the second reversing valve in two adjacent periods;
an opening degree calculation unit that calculates opening degrees of the first and second direction changing valves based on the proportional constant Kp, the integral constant Ki, and the differential constant Kd
Figure FDA0002330543290000031
Figure FDA0002330543290000032
The control unit calculates the obtained opening degree O according to the opening degree calculation uniti+1Adjusting the opening degrees of the first reversing valve and the second reversing valve; wherein, OiRepresenting the opening degrees of the first reversing valve and the second reversing valve in the previous period; o isi-1Showing the opening degrees of the first and second directional valves in the first two cycles.
4. A system for providing heating to effect fine-tuning and multi-energy complementary retrofitting according to claims 1-3, characterised in that said first temperature is at least as high as the temperature of the building heating medium in said building heating pipe.
5. System for implementing fine-tuning and multi-energy complementary revamping of heating according to claims 1-4, characterized in that the electrodes (33) of said electrode boiler (3) comprise in particular:
the assembly plate (54) is fixed on the surface of the outer wall of the electrode boiler (3), and the middle of the assembly plate (54) is provided with a mounting hole communicated to the inner wall of the electrode boiler (3);
a first electrode (51) with an upper end protruding out of the surface of the assembling plate (54), and a lower end of the first electrode (51) extending into the electrode boiler (3) from a mounting hole in the assembling plate (54);
the upper end of the first conductive rod (511) is connected with the lower end of the first electrode (51), and the lower end of the first conductive rod (511) extends into a medium in the electrode boiler (3);
a first electrode disk (512) perpendicular to the first conductive bar (511) and electrically connected to the first conductive bar (511);
a third electrode (53), the upper end of which protrudes out of the surface of the assembling plate (54), and the lower end of the third electrode (53) extends into the interior of the electrode boiler (3) from another mounting hole in the assembling plate (54);
the upper end of the third conductive rod (531) is connected with the lower end of the third electrode (53), and the lower end of the third conductive rod (531) extends into a medium in the electrode boiler (3);
a third electrode disk (532) perpendicular to the third conductive bar (531) and electrically connected to the third conductive bar (531);
first electrode dish (512) third electrode dish (532) are followed respectively first conducting rod (511) third conducting rod (531) length direction is pairwise sets up to the multiunit, in every group, one side of first electrode dish (512) with one side of third electrode dish (532) is close each other, in every group be provided with insulating clearance between one side that first electrode dish (512) with third electrode dish (532) are close each other.
6. System for implementing fine-tuning and multi-energy complementary revamping of heating according to claims 1-5, characterized in that the electrodes (33) of the electrode boiler (3) further comprise:
a second electrode (52), the upper end of which protrudes out of the surface of the assembling plate (54), and the lower end of the second electrode (52) extends into the interior of the electrode boiler (3) from a mounting hole in the assembling plate (54);
the upper end of the second conductive rod (521) is connected with the lower end of the second electrode (52), and the lower end of the second conductive rod (521) extends into the medium in the electrode boiler (3);
the second electrode disk (522) is perpendicular to the second conductive rod (521) and is electrically connected with the second conductive rod (521), a through hole for the first conductive rod (511) and the third conductive rod (531) to penetrate through is formed in the middle of the second electrode disk (522), and the second electrode disk (522) is arranged between the adjacent two groups of first electrode disks (512) and third electrode disks (532) at intervals along the second conductive rod (521).
7. A method for implementing fine adjustment and multi-energy complementary transformation for heat supply is characterized by comprising the following steps:
firstly, heat exchange equipment (1) receives a heat source in a pipe network, heats a building heat supply medium which is input by a building water return pipe and used for supplying heat to a building and then is cooled, and outputs the heated building heat supply medium to a building heat supply pipe;
secondly, when the power utilization condition is met, adjusting the opening degrees of the first reversing valve and the second reversing valve once every other period, enabling the electrode boiler (3) to receive a building heat supply medium which is used for supplying heat to the building and then cooled in a building water return pipe through the first reversing valve, driving electrodes (33) arranged in the electrode boiler (3), generating vortex on the surfaces of electrode discs of all groups arranged on the electrodes (33), and heating the building heat supply medium in the electrode boiler (3) to reach a first temperature;
and thirdly, the heat storage tank (2) receives and stores the building heat supply medium with the first temperature output by the output end of the electrode boiler (3), and outputs the building heat supply medium stored in the heat storage tank to a building heat supply pipe communicated with the second reversing valve.
8. A method of providing fine-tuning and multi-energy complementary retrofitting for heating as claimed in claim 7, wherein said electricity consumption conditions are: the current power utilization is valley power or green power, or the power utilization condition is that the current power utilization is night.
9. Method for implementing fine adjustments and multi-energy complementary revamping of a heating plant according to claims 7-8, characterized in that in said second and third steps, the opening degree of the first and second reversing valves is controlled by the following steps:
step s1, respectively acquiring the temperature T of the building heat supply medium in the reversing output end of the first reversing valve, the ambient temperature T in the building and the temperature w of the building heat supply medium in the heat supply output end of the second reversing valve in each period;
step s2, calculating the proportionality constant Kp ═ log (T-T)4(ii) a The integral constant Ki ═ w-T |; differential constant
Figure FDA0002330543290000051
Wherein, delta t represents the change rate of the temperature t of the building heat supply medium in the reversing output end of the first reversing valve in two adjacent periods, and delta w represents the change rate of the temperature w of the building heat supply medium in the heat supply output end of the second reversing valve in two adjacent periods;
step s3, based on the proportionality constant Kp and the integralCalculating the opening degrees of the first and second switching valves by using the constant Ki and the differential constant Kd
Figure FDA0002330543290000052
Figure FDA0002330543290000061
According to the calculated opening degree Oi+1Adjusting the opening degrees of the first reversing valve and the second reversing valve; wherein, OiRepresenting the opening degrees of the first reversing valve and the second reversing valve in the previous period; o isi-1Showing the opening degrees of the first and second directional valves in the first two cycles.
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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0014612A1 (en) * 1979-01-31 1980-08-20 Messier (S.A.) Method and apparatus for the regulation of a heating installation for rooms
KR20030088709A (en) * 2002-05-14 2003-11-20 주식회사 경동보일러 Solar heat boiler system
JP2012178372A (en) * 2012-06-21 2012-09-13 Mitsubishi Electric Corp Induction heating cooker
KR101591917B1 (en) * 2014-07-29 2016-02-04 김기성 Hybrid electric boiler apparatus and the boiling apparatus adapted to the boiler apparatus
WO2017092179A1 (en) * 2015-12-02 2017-06-08 宋世海 Secondary heat exchange and supply system using off-peak electricity for heating and energy storage
CN107076457A (en) * 2014-07-10 2017-08-18 表准 Utilize the heater of the electrode boiler of vortex
WO2019076279A1 (en) * 2017-10-16 2019-04-25 深圳市爱能森科技有限公司 Multi-energy complementation application system

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0014612A1 (en) * 1979-01-31 1980-08-20 Messier (S.A.) Method and apparatus for the regulation of a heating installation for rooms
KR20030088709A (en) * 2002-05-14 2003-11-20 주식회사 경동보일러 Solar heat boiler system
JP2012178372A (en) * 2012-06-21 2012-09-13 Mitsubishi Electric Corp Induction heating cooker
CN107076457A (en) * 2014-07-10 2017-08-18 表准 Utilize the heater of the electrode boiler of vortex
KR101591917B1 (en) * 2014-07-29 2016-02-04 김기성 Hybrid electric boiler apparatus and the boiling apparatus adapted to the boiler apparatus
WO2017092179A1 (en) * 2015-12-02 2017-06-08 宋世海 Secondary heat exchange and supply system using off-peak electricity for heating and energy storage
WO2019076279A1 (en) * 2017-10-16 2019-04-25 深圳市爱能森科技有限公司 Multi-energy complementation application system

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