CN110701660A - Secondary side intelligent type hybrid energy heat exchange unit and control method - Google Patents
Secondary side intelligent type hybrid energy heat exchange unit and control method Download PDFInfo
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- CN110701660A CN110701660A CN201910950851.5A CN201910950851A CN110701660A CN 110701660 A CN110701660 A CN 110701660A CN 201910950851 A CN201910950851 A CN 201910950851A CN 110701660 A CN110701660 A CN 110701660A
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- 238000000034 method Methods 0.000 title claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 281
- 238000002156 mixing Methods 0.000 claims abstract description 26
- 238000005201 scrubbing Methods 0.000 claims description 21
- 238000004140 cleaning Methods 0.000 claims description 17
- 238000007872 degassing Methods 0.000 claims description 17
- 239000012535 impurity Substances 0.000 claims description 13
- 239000003814 drug Substances 0.000 claims description 12
- 238000005406 washing Methods 0.000 claims description 9
- 238000001914 filtration Methods 0.000 claims description 6
- 238000005259 measurement Methods 0.000 claims description 3
- 239000000126 substance Substances 0.000 description 27
- 238000005202 decontamination Methods 0.000 description 19
- 230000003588 decontaminative effect Effects 0.000 description 19
- 238000011010 flushing procedure Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 5
- 239000010865 sewage Substances 0.000 description 5
- 230000003020 moisturizing effect Effects 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000012459 cleaning agent Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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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
- F24D3/00—Hot-water central heating systems
- F24D3/10—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system
- F24D3/1058—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system disposition of pipes and pipe connections
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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
- F24D19/1009—Arrangement or mounting of control or safety devices for water heating systems for central heating
- F24D19/1012—Arrangement or mounting of control or safety devices for water heating systems for central heating by regulating the speed of a pump
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Accessories For Mixers (AREA)
Abstract
The invention discloses a secondary side intelligent energy mixing heat exchange unit and a control method, wherein the secondary side intelligent energy mixing heat exchange unit comprises a two-network water return pipe, a two-network water supply pipe, a secondary side heat exchanger, a second circulating pump, a first circulating pump and an energy mixer, the secondary side heat exchanger is provided with a heat exchanger water inlet and a heat exchanger water outlet, the second circulating pump is provided with a second circulating pump water inlet and a second circulating pump water outlet, the first circulating pump is provided with a first circulating pump water inlet and a first circulating pump water outlet, and the energy mixer comprises a tank body with a hollow interior, and a first water inlet, a first water outlet, a second water inlet and a second water outlet which are communicated with the; the second circulating pump is used for controlling the water quantity entering the secondary side heat exchanger, the first circulating pump provides circulating power of the secondary side pipe network, low-temperature water which does not pass through the secondary side heat exchanger is mixed with high-temperature water through the energy mixer, the mixing proportion of the low-temperature water and the high-temperature water is adjusted, the heat supply temperature is controlled, the integral resistance of the pipe network is reduced, and the energy is saved.
Description
Technical Field
The invention relates to the technical field of heat exchange units, in particular to a secondary side intelligent type hybrid energy heat exchange unit and a control method.
Background
The traditional plate type heat exchanger unit mainly comprises a plurality of plate type heat exchangers, a circulating pump, a water replenishing pump, a valve and a filter.
The secondary side heat exchange unit in the prior art can not adjust heat transmission and distribution according to actual heat demand of a heat user, the resistance of water bodies in a secondary side pipe network and a plate type heat exchanger is large, the requirement on conveying pressure is high, and a circulating pump occupies a large area and consumes high energy.
Disclosure of Invention
In order to solve the technical problems, the invention provides a secondary side intelligent energy mixing heat exchange unit and a control method, wherein a second circulating pump is used for controlling the water quantity entering a secondary side heat exchanger, a first circulating pump provides circulating power of a secondary side pipe network, so that low-temperature water which does not pass through the secondary side heat exchanger is mixed with high-temperature water through an energy mixer, the mixing ratio of the low-temperature water and the high-temperature water is adjusted, the heat supply temperature is further controlled, the overall resistance of the secondary side pipe network is reduced, and the energy is saved.
In order to solve the technical problems, the invention adopts the following technical scheme:
a secondary side intelligent energy mixing heat exchange unit comprises a two-network water return pipe, a two-network water supply pipe, a secondary side heat exchanger, a second circulating pump, a first circulating pump, an energy mixer, a controller and a temperature sensor for measuring the water temperature in the two-network water supply pipe, wherein the secondary side heat exchanger is provided with a heat exchanger water inlet and a heat exchanger water outlet, the second circulating pump is provided with a second circulating pump water inlet and a second circulating pump water outlet, the first circulating pump is provided with a first circulating pump water inlet and a first circulating pump water outlet, and the energy mixer comprises a tank body with a hollow inner part, and a first water inlet, a first water outlet, a second water inlet and a second water outlet which are communicated with the tank body;
the heat exchanger unit is characterized in that the two-net water return pipe is communicated with a first circulating pump water inlet, a first circulating pump water outlet is communicated with a first water inlet, a first water outlet is communicated with a second circulating pump water inlet, a second circulating pump water outlet is communicated with a heat exchanger water inlet, a heat exchanger water outlet is communicated with a second water inlet, a second water outlet is communicated with a two-net water supply pipe, the heat exchanger unit controls the amount of low-temperature water entering the secondary side heat exchanger through the second circulating pump, so that residual low-temperature water flows into the energy mixer, and an energy mixing area where the low-temperature water is mixed with high-temperature water flowing into the second water inlet is formed in.
Further, the heat exchanger unit is still including the scrubbing device that outgases that is used for filtering water impurity, the scrubbing device that outgases is including the scrubbing jar body that outgases to and with the scrubbing water inlet and the scrubbing delivery port of the scrubbing jar body intercommunication that outgases, scrubbing water inlet and two net wet return intercommunication, scrubbing delivery port and first circulating pump water inlet intercommunication, the scrubbing jar body bottom intercommunication that outgases has the second blowoff valve.
Further, a first blowdown valve communicated with the tank body is arranged at the bottom of the energy mixer.
Further, the heat exchanger unit still includes the moisturizing pump, the moisturizing pump has the feed water inlet, feed water inlet and first circulating pump water inlet intercommunication, the moisturizing pump provides clean water for first circulating pump water inlet through the feed water inlet.
Further, be provided with charge device in the energy mixing ware, charge device has the medicament storage jar, the storage has the washing medicament in the medicament storage jar, set up the mouth that adds medicine with medicament storage jar intercommunication on the energy mixing ware.
Furthermore, the heat exchanger unit also comprises a first electromagnetic valve for controlling the on-off between the water outlet of the heat exchanger and the second water inlet, and a second electromagnetic valve for controlling the on-off between the first water outlet and the water inlet of the second circulating pump.
Furthermore, a backwater shutoff valve for controlling the on-off of the two-network backwater pipe is arranged on the two-network backwater pipe, and a water supply shutoff valve for controlling the on-off of the two-network water supply pipe is arranged on the two-network water supply pipe.
A control method of a secondary side intelligent type hybrid energy heat exchanger unit comprises the following steps:
1) the target value T of water temperature of water supply is set by the controllert；
2) Real-time measurement of water temperature actual value T in two-network water supply pipe through temperature sensorf；
3) Calculating the difference e between the actual water temperature value and the target water temperature value in real timef-TtAnd adjusting the running frequency of the second circulating pump according to the positive and negative sum of the difference value e, and controlling the mixing ratio of the low-temperature water and the high-temperature water in the energy mixer.
Specifically, the operation frequency of the second circulating pump is adjusted according to the positive and negative of the difference e between the actual water temperature value and the target water temperature value, and if the difference e is larger than 0, the operation frequency of the second circulating pump is reduced; and if the difference e is less than 0, increasing the running frequency of the second circulating pump.
Specifically, the following relationship exists between the operating frequency u of the second circulation pump and the difference e:
wherein KpIs a proportionality coefficient, TiTo integrate the time constant, TdIs the differential time constant.
Compared with the prior art, the invention has the beneficial technical effects that:
1. the second circulating pump is used for controlling the water quantity entering the secondary side heat exchanger, the first circulating pump provides circulating power of the secondary side pipe network, so that low-temperature water which cannot pass through the secondary side heat exchanger is output to the secondary side water supply pipe through the energy mixer and is mixed with high-temperature water in the secondary side water supply pipe, when the outside air temperature is higher, the heat of the secondary side pipe is surplus,
the heating temperature can be controlled through the mixing proportion of the low-temperature water and the high-temperature water, and the overall pressure drop of the secondary side is reduced to 30-40 KPa through the mixed conveying of the second circulating pump, the first circulating pump and the energy mixer, so that the power consumption is saved by 20-30%; because the delivery pressure of the secondary side heat exchange unit is reduced, the volumes of the second circulating pump, the first circulating pump and the water replenishing pump are small, and the second circulating pump, the first circulating pump and the water replenishing pump are connected in series for use, so that the occupied area is small, and the energy consumption is low.
2. Through the cooperation of various pump bodies, valve body, can realize that secondary side pipe network and secondary side heat exchanger's online intelligence washes, can carry out online washing effect monitoring and analysis, solve the work of traditional secondary side pipe network washing mode loaded down with trivial details, the difficult scheduling problem of cleaning effect monitoring, reduce simultaneously and wash the labour cost more than 50%.
Drawings
FIG. 1 is a schematic structural view of a two-network pipeline according to the present invention;
FIG. 2 is a flow chart illustrating a control method according to the present invention.
Detailed Description
A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings.
As shown in fig. 1, a secondary side energy mixing heat exchanger unit comprises a two-network water return pipe 20, a two-network water supply pipe 30, a secondary side heat exchanger 10, a second circulating pump 50, a first circulating pump 60 and an energy mixer 40, wherein the secondary side heat exchanger is provided with a heat exchanger water inlet 12 and a heat exchanger water outlet 11, the second circulating pump is provided with a second circulating pump water inlet 51 and a second circulating pump water outlet 52, the first circulating pump is provided with a first circulating pump water inlet 61 and a first circulating pump water outlet 62, and the energy mixer comprises a tank body with a hollow interior, and a first water inlet 41, a first water outlet 42, a second water inlet 43 and a second water outlet 44 which are communicated with the tank body;
the two-network water return pipe 20 is communicated with a first circulating pump water inlet 61, a first circulating pump water outlet 62 is communicated with a first water inlet 41, a first water outlet 42 is communicated with a second circulating pump water inlet 51, a second circulating pump water outlet 52 is communicated with a heat exchanger water inlet 12, a heat exchanger water outlet 11 is communicated with a second water inlet 43, a second water outlet 44 is communicated with a two-network water supply pipe 30, the heat exchanger unit controls the amount of low-temperature water entering the secondary side heat exchanger through a second circulating pump, so that the residual low-temperature water flows into the energy mixing device, and an energy mixing area formed by mixing the low-temperature water and high-temperature water flowing into the second water inlet is formed in the tank body.
Municipal water with lower temperature flows in from the two-network water return pipe, obtains heat in the secondary side heat exchanger, flows into the two-network water supply pipe after the temperature rises, and is supplied to each community for use; when the air temperature is higher, the water temperature in the two-network water supply pipe does not need to be too high, an energy mixer is communicated between the two-network water return pipe and the two-network water supply pipe, the power of a second circulating pump is controlled according to the difference value of the temperature in the two-network water supply pipe and a set value, part of low-temperature water enters the secondary side heat exchanger, and part of low-temperature water flows into the energy mixer and is mixed with high-temperature water, so that the temperature in the two-network water supply pipe is reduced, only part of water is heated, the internal resistance of the secondary side heat exchanger is reduced, the energy consumption of a pump body is reduced, and electric energy and heat energy; because need not high-power circulating pump, the volume of second circulating pump, first circulating pump and moisturizing pump is less, and establishes ties and use, and area is little, the installation of being convenient for.
The second circulating pump is used for controlling the water quantity entering the secondary side heat exchanger, the first circulating pump provides circulating power of the secondary side pipe network, low-temperature water which cannot pass through the secondary side heat exchanger is output to the two-network water supply pipe through the energy mixer and is mixed with high-temperature water in the two-network water supply pipe, when the outside air temperature is high and the heat of the secondary network is surplus, the heating temperature can be controlled according to the mixing proportion of the low-temperature water and the high-temperature water, the whole pressure drop of the secondary side is reduced to 30-40 KPa through mixed conveying of the second circulating pump, the first circulating pump and the energy mixer, and the power consumption is saved by 20% -30%.
As shown in fig. 1, the heat exchanger unit further includes a degassing and decontamination device 70 for filtering impurities in the water body, the degassing and decontamination device includes a degassing and decontamination tank body, a decontamination water inlet 71 and a decontamination water outlet 72 communicated with the degassing and decontamination tank body, the decontamination water inlet 71 is communicated with the two-net water return pipe 20, the decontamination water outlet 72 is communicated with the first circulating pump water inlet 61, and the bottom of the degassing and decontamination tank body is communicated with a second blow-down valve.
Degassing decontamination plant is inside to have the filter screen, can filter the impurity in the water to concentrate impurity and deposit scrubbing jar body bottom, when the impurity of scrubbing jar body bottom was too much, control second blowoff valve was opened, derived impurity, accomplished the purification of water.
As shown in fig. 1, a first sewage discharge valve communicated with the tank body is arranged at the bottom of the energy mixer 40, and when more water impurities are concentrated at the bottom of the tank body of the energy mixer, the first sewage discharge valve is controlled to be opened to discharge the water impurities.
As shown in fig. 1, a chemical adding device is arranged in the energy mixer 40, the chemical adding device is provided with a chemical storage tank, a cleaning chemical is stored in the chemical storage tank, a chemical adding port 45 communicated with the chemical storage tank is arranged on the energy mixer, when deep cleaning is required to be performed on the pipeline or the secondary side heat exchanger, the chemical adding device is controlled to input the cleaning chemical into the energy mixer, the cleaning chemical can react with dirt on the pipe wall to reduce the thickness of the dirt, a check valve is arranged at the front end of the chemical adding device to prevent water of the energy mixer from entering the chemical adding device and avoid the cleaning chemical in the chemical storage tank from being polluted, the chemical storage tank in the chemical adding device is communicated with the chemical adding port through the pipeline, when the cleaning chemical in the chemical storage tank is insufficient, the cleaning chemical is added through the chemical adding port without opening the energy mixer to add chemicals, so that the maintenance time is saved, the maintenance cost is reduced.
As shown in fig. 1, the heat exchanger unit of the secondary energy mixer further includes a water replenishing pump 22, the water replenishing pump has a water supply port 23, the water supply port is communicated with a first circulating pump water inlet 61, and the water replenishing pump provides cleaning water for the first circulating pump water inlet through the water supply port.
As shown in fig. 1, the heat exchanger unit further includes a first electromagnetic valve 31 for controlling on-off between the heat exchanger water outlet 11 and the second water inlet 43, and a second electromagnetic valve 21 for controlling on-off between the first water outlet 42 and the second circulating pump water inlet 51.
Because the inside runner of secondary side heat exchanger is complicated, rivers are slow, but the pipeline dirt is comparatively stubborn, needs high-speed rivers to erode and just can wash thoroughly, first solenoid valve, second solenoid valve, energy mixing ware, degasification scrubbing device mutually support, can realize washing of secondary side pipeline, and specific operating method is: closing the first electromagnetic valve and the second electromagnetic valve to ensure that water in the two-net water return pipe can only flow to the energy mixer, wherein the energy mixer is hollow, the flow channel is simple, the flow speed is high, the high-speed water flow can effectively remove dirt in the pipeline, then opening the first circulating pump, flushing the impurities attached to the pipe wall by the water in the two-net water return pipe, the two-net water supply pipe and the energy mixer under the pressurization driving of the first circulating pump, filtering the impurities in the water in the degassing and decontamination device, detecting the pressure difference between the decontamination water inlet and the decontamination water outlet of the degassing and decontamination device, when the pressure difference is larger than a set value, indicating that the impurities in the water in the pipeline are still more, filtering the water with more impurities through the filtering net in the degassing and decontamination device to form the pressure difference between the decontamination water inlet and the decontamination water outlet, and opening the second electromagnetic valve at the bottom of the degassing and decontamination device to drain the sewage, simultaneously, starting a water replenishing pump to replenish water, and flushing again; when the pressure difference is smaller than a set value, the water replenishing pump is closed, and the first electromagnetic valve and the second electromagnetic valve are opened simultaneously to complete the flushing of the two-network water return pipe, the energy mixer and the two-network water supply pipe; the secondary side pipe network flushing method has the advantages that a large amount of labor is generally needed for flushing the secondary side pipe network, operation steps are complex, time and labor are consumed, the secondary side pipe network can be flushed on line by using the cooperation of the first electromagnetic valve, the second electromagnetic valve, the first circulating pump, the energy mixer and the degassing and decontamination device, flushing effect monitoring can be carried out, the problems that a traditional secondary side pipe network flushing mode is complex in work, the flushing effect monitoring is difficult and the like are solved, and meanwhile, the flushing labor cost is reduced by more than 50%.
As shown in fig. 1, a backwater shut-off valve 24 is arranged on the two-network backwater pipe 20, a water supply shut-off valve 32 is arranged on the two-network water supply pipe 30, the backwater shut-off valve is used for controlling the on-off of the two-network backwater pipe, the water supply shut-off valve is used for controlling the on-off of the two-network water supply pipe, and the on-off control and the off-off control of the heat exchange unit and the external water circulation are realized through the opening and closing of the backwater shut-off valve and the water supply shut-off valve.
The secondary side heat exchanger can be cleaned on line by the cooperation of the return water shutoff valve, the water supply shutoff valve, the second circulating pump and the energy mixer, and the specific operation method comprises the following steps: closing a water supply shut-off valve and a water return shut-off valve, temporarily stopping heat exchange, opening a first sewage discharge valve to discharge original water in a pipeline, closing the first sewage discharge valve after the water is discharged, opening a chemical adding device, adding a quantitative cleaning chemical into an energy mixer, opening a water replenishing pump to replenish fresh water into a secondary side pipeline, opening a second circulating pump to form closed internal water circulation between the secondary side heat exchanger and the energy mixer, detecting the concentration of the cleaning chemical in the pipeline after cleaning for a period of time, and if the concentration of the cleaning chemical is greater than a set value, enabling dirt on the inner wall of the secondary side heat exchanger to be no longer reacted with the cleaning chemical, indicating that the dirt is eliminated, and discharging water in a secondary network pipeline at the moment to realize the cleaning of the secondary side heat exchanger; if the concentration of the cleaning agent is less than the set value, the cleaning is repeated until the quality of the water in the pipeline reaches the standard.
When carrying out the online washing of adding medicine of secondary side heat exchanger, the return water shutoff valve can also not close with the water supply shutoff valve, second circulating pump drive water gets into the secondary side heat exchanger, the department produces the negative pressure in the water inlet of second circulating pump, at the second circulating pump, the secondary side heat exchanger, form internal circulation between the ware thoughtlessly can, through the dirt on washing medicament and the secondary side heat exchanger takes place the reaction, reduce the dirt thickness on the secondary side heat exchanger inner wall, realize the washing of secondary side heat exchanger, need not to dismantle the secondary side heat exchanger, the life-span of secondary side heat exchanger has been improved, the washing man-hour has been shortened, the maintenance cost is reduced.
A control method of a secondary side intelligent type hybrid energy heat exchanger unit comprises the following steps:
s1: the target value T of water temperature of water supply is set by the controllert；
S2: real-time measurement of water temperature actual value T in two-network water supply pipe through temperature sensorf；
S3: calculating the difference e between the actual water temperature value and the target water temperature value in real timef-TtAnd adjusting the running frequency of the second circulating pump according to the positive and negative sum of the difference value e, and controlling the mixing ratio of the low-temperature water and the high-temperature water in the energy mixer.
Specifically, the operation frequency of the second circulating pump is adjusted according to the positive and negative of the difference e between the actual water temperature value and the target water temperature value, and if the difference e is larger than 0, the operation frequency of the second circulating pump is reduced; and if the difference e is less than 0, increasing the running frequency of the second circulating pump.
Specifically, the operating frequency of the first circulation pump may be set manually; and the pressure difference between the water supply pipe and the water return pipe in the two-network water supply pipe can be measured, and the running frequency of the first circulating pump is controlled according to the pressure difference between the water supply pipe and the water return pipe to ensure that the water supply pressure is kept stable.
Specifically, the following relationship exists between the operating frequency u of the second circulation pump and the difference e:
wherein KpIs a proportionality coefficient, TiTo integrate the time constant, TdIs the differential time constant.
The temperature of the two-network water supply is accurately controlled, the energy utilization rate is improved, and the energy waste is avoided.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. A secondary side intelligent type energy mixing heat exchange unit is characterized by comprising a two-network water return pipe (20), a two-network water supply pipe (30), a secondary side heat exchanger (10), a second circulating pump (50), a first circulating pump (60), an energy mixing device (40), a controller and a temperature sensor for measuring the water temperature in the two-network water supply pipe, the secondary side heat exchanger is provided with a heat exchanger water inlet (12) and a heat exchanger water outlet (11), the second circulating pump is provided with a second circulating pump water inlet (51) and a second circulating pump water outlet (52), the first circulating pump is provided with a first circulating pump water inlet (61) and a first circulating pump water outlet (62), the energy mixer comprises a tank body with a hollow inner part, the first water inlet (41), the first water outlet (42), the second water inlet (43) and the second water outlet (44) are communicated with the tank body;
the two-network water return pipe (20) is communicated with a first circulating pump water inlet (61), a first circulating pump water outlet (62) is communicated with a first water inlet (41), a first water outlet (42) is communicated with a second circulating pump water inlet (51), a second circulating pump water outlet (52) is communicated with a heat exchanger water inlet (12), a heat exchanger water outlet (11) is communicated with a second water inlet (43), a second water outlet (44) is communicated with a two-network water supply pipe (30), the heat exchanger unit controls the amount of low-temperature water entering the secondary side heat exchanger through a second circulating pump, so that residual low-temperature water flows into the energy mixing device, and an energy mixing area formed by mixing the low-temperature water and high-temperature water flowing into the second water inlet is formed in the tank body.
2. The secondary-side intelligent hybrid energy heat exchanger unit as claimed in claim 1, wherein: the heat exchanger unit is still including degasification scrubbing device (70) that is used for filtering water body impurity, degasification scrubbing device is including the degasification scrubbing jar body to and with the scrubbing water inlet (71) and the scrubbing delivery port (72) of the degasification scrubbing jar body intercommunication, scrubbing water inlet (71) and two net wet return (20) intercommunications, scrubbing delivery port (72) and first circulating pump water inlet (61) intercommunication, degasification scrubbing jar body bottom intercommunication has the second blowoff valve.
3. The secondary-side intelligent hybrid energy heat exchanger unit as claimed in claim 1, wherein: and a first blowdown valve communicated with the tank body is arranged at the bottom of the energy mixer (40).
4. The secondary-side intelligent hybrid energy heat exchanger unit as claimed in claim 1, wherein: the heat exchanger unit further comprises a water replenishing pump (22), the water replenishing pump is provided with a water supply port (23), the water supply port is communicated with a water inlet (61) of the first circulating pump, and the water replenishing pump provides cleaning water for the water inlet of the first circulating pump through the water supply port.
5. The secondary-side intelligent hybrid energy heat exchanger unit as claimed in claim 1, wherein: be provided with charge device in energy mixing ware (40), charge device has the medicament storage jar, the storage has the washing medicament in the medicament storage jar, set up on the energy mixing ware with medicament storage jar intercommunication add medicine mouth (45).
6. The secondary-side intelligent hybrid energy heat exchanger unit as claimed in claim 1, wherein: the heat exchanger unit further comprises a first electromagnetic valve (31) used for controlling the on-off between the water outlet (11) of the heat exchanger and the second water inlet (43), and a second electromagnetic valve (21) used for controlling the on-off between the first water outlet (42) and the water inlet (51) of the second circulating pump.
7. The secondary-side intelligent hybrid energy heat exchanger unit as claimed in claim 1, wherein: a backwater shutoff valve (24) for controlling the on-off of the two-network backwater pipe is arranged on the two-network backwater pipe (20), and a water supply shutoff valve (32) for controlling the on-off of the two-network water supply pipe is arranged on the two-network water supply pipe (30).
8. A control method of a secondary side intelligent type hybrid energy heat exchanger unit as claimed in any one of claims 1-7, comprising the steps of:
1) the target value T of water temperature of water supply is set by the controllert；
2) Real-time measurement of water temperature actual value T in two-network water supply pipe through temperature sensorf；
3) Calculating the difference e between the actual water temperature value and the target water temperature value in real timef-TtAnd adjusting the running frequency of the second circulating pump according to the positive and negative sum of the difference value e, and controlling the mixing ratio of the low-temperature water and the high-temperature water in the energy mixer.
9. The method for controlling the secondary-side intelligent hybrid energy heat exchanger unit as claimed in claim 8, wherein the method comprises the following steps: adjusting the operating frequency of the second circulating pump according to the positive and negative of the difference e between the actual water temperature value and the target water temperature value, and reducing the operating frequency of the second circulating pump if the difference e is greater than 0; and if the difference e is less than 0, increasing the running frequency of the second circulating pump.
10. The control method of the secondary intelligent hybrid energy heat exchanger unit as claimed in claim 8, wherein: the following relationship exists between the operating frequency u of the second circulating pump and the difference e:
wherein KpIs a proportionality coefficient, TiTo integrate the time constant, TdIs the differential time constant.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117167804A (en) * | 2023-11-03 | 2023-12-05 | 山东科翔物联网有限公司 | Constant temperature control system of heating and ventilation equipment and control method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE3104224A1 (en) * | 1981-02-06 | 1982-08-19 | Siemens AG, 1000 Berlin und 8000 München | Heating installation |
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| DE3104224A1 (en) * | 1981-02-06 | 1982-08-19 | Siemens AG, 1000 Berlin und 8000 München | Heating installation |
| CN101799189A (en) * | 2010-04-06 | 2010-08-11 | 天津艾耐尔热能设备有限公司 | Water-mixing regulating method and device of secondary network system of heat exchange unit |
| CN104848734A (en) * | 2014-11-19 | 2015-08-19 | 青岛同创节能环保工程有限公司 | Descaling and rinsing method for plate heat exchange unit |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117167804A (en) * | 2023-11-03 | 2023-12-05 | 山东科翔物联网有限公司 | Constant temperature control system of heating and ventilation equipment and control method thereof |
| CN117167804B (en) * | 2023-11-03 | 2024-01-16 | 山东科翔物联网有限公司 | Constant temperature control system of heating and ventilation equipment and control method thereof |
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