CN113932464A - Water pipeline anti-freezing control device and control method thereof - Google Patents
Water pipeline anti-freezing control device and control method thereof Download PDFInfo
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- CN113932464A CN113932464A CN202111301352.7A CN202111301352A CN113932464A CN 113932464 A CN113932464 A CN 113932464A CN 202111301352 A CN202111301352 A CN 202111301352A CN 113932464 A CN113932464 A CN 113932464A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 484
- 238000007710 freezing Methods 0.000 title claims abstract description 106
- 238000000034 method Methods 0.000 title claims abstract description 54
- 238000005338 heat storage Methods 0.000 claims abstract description 120
- 238000010438 heat treatment Methods 0.000 claims description 129
- 238000005485 electric heating Methods 0.000 claims description 39
- 238000004321 preservation Methods 0.000 claims description 19
- 230000002528 anti-freeze Effects 0.000 claims description 17
- 238000005086 pumping Methods 0.000 claims description 3
- 230000001502 supplementing effect Effects 0.000 claims description 3
- 230000008014 freezing Effects 0.000 description 26
- 230000000694 effects Effects 0.000 description 12
- 208000001034 Frostbite Diseases 0.000 description 6
- 238000005265 energy consumption Methods 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000002265 prevention Effects 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 108010053481 Antifreeze Proteins Proteins 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S40/00—Safety or protection arrangements of solar heat collectors; Preventing malfunction of solar heat collectors
- F24S40/70—Preventing freezing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S20/00—Solar heat collectors specially adapted for particular uses or environments
- F24S20/40—Solar heat collectors combined with other heat sources, e.g. using electrical heating or heat from ambient air
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S50/00—Arrangements for controlling solar heat collectors
- F24S50/40—Arrangements for controlling solar heat collectors responsive to temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S80/00—Details, accessories or component parts of solar heat collectors not provided for in groups F24S10/00-F24S70/00
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/20—Solar thermal
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The invention discloses a water pipeline anti-freezing control device and a control method thereof, and belongs to the technical field of water pipeline anti-freezing. The device includes heat collector and holding water tank, be linked together through heat storage water tank between heat collector and the holding water tank, heat storage water tank's inside is equipped with electric heater unit, heat storage water tank is used for providing hot water to heat collector and holding water tank respectively. The invention relates to a water pipeline anti-freezing control device and a control method thereof.
Description
Technical Field
The invention belongs to the technical field of water pipeline anti-freezing, and particularly relates to a water pipeline anti-freezing control device and a control method thereof.
Background
The household solar water heating system generally adopts water as a heat transfer medium, and one problem which must be considered when the household solar water heating system is used in winter in most areas of China is anti-freezing treatment of pipelines. An insulating layer is generally added to the pipeline, and besides, the anti-freezing measures of the pipeline of the heat collecting system generally have the following aspects.
1. Electric tracing heat antifreezing: the outer wall of the pipeline in the heat insulation layer is wound with the electric heating tape, so that the pipeline can be heated and prevented from freezing at any time, and the method is a reliable method for preventing freezing of the pipeline, and is the most common anti-freezing measure in winter of the domestic solar energy system;
2. circulating and antifreezing of pipelines: the method is mainly characterized in that hot water is conveyed to a pipeline to prevent freezing, a constant-temperature circulation method is generally adopted, a temperature sensor is installed at the most unfavorable point of the pipeline, and when the temperature is lower than five ℃, a circulation pump is started to circulate once to keep the water in the pipeline not reaching the freezing point, but the method consumes a part of energy;
3. a pipeline emptying method: the method for preventing freezing is commonly used in an open type solar water heating system, and an emptying valve is arranged at a heat collector. In winter, in the weather that the heat collection system does not collect heat at night or can not collect heat, when the worst point temperature of the pipeline is lower than five ℃, the emptying valve is opened to drain all water in the pipeline, so that the pipeline anti-freezing effect is achieved;
4. a back drainage system: the system needs to arrange a liquid storage tank in the heat collection circulating pipeline, the system pipeline is kept empty when the system is not operated, heat transfer media are stored in the liquid storage tank, when the system is started, the heat transfer media fill the pipeline of the heat collection system, the system circulating pump stops operating, the heat transfer media return to the liquid storage tank, the heat collector and the outdoor pipeline are emptied, and therefore the pipeline is guaranteed not to be frozen. The structure and the operation process of the system, the heat collector is always full in the operation process of the system, and the system is usually continuous once started to operate;
5. anti-freezing drip valve: in this way, an anti-freeze drip valve is installed in the collector system. When the temperature sensed by the temperature sensing element of the valve reaches the set temperature, the anti-freezing dripping valve starts dripping, so that the system is prevented from freezing. However, in practical use, in cold regions, the water drops more than once, and the effect is not good.
Taking an instant water heater as an example, the instant water heater can quickly obtain hot water flow through an electric heating body, and can adjust heating parameters such as heating power, heating time, heating interval and the like through a controller, so that the water temperature meets different requirements of users. Its advantages are instant heating and no need of long waiting time. However, the instant electric water heater also has a certain potential safety hazard, accumulated water often remains in the water guide pipeline and the pipeline in the heating body after use, and if the instant electric water heater is in a low-temperature use environment such as a kitchen, a balcony and the like, the accumulated water in the pipeline and the heating body is frozen to cause frost crack and damage of the pipeline when the external environment temperature is low, so that the water heater is damaged.
Through retrieval, the Chinese invention patent is as follows: the application discloses an anti-freezing control method of a water heater and the water heater (with the application number of CN202010886360.1, the application date is 28/08/2020), the application discloses the anti-freezing control method of the water heater and the water heater, the water heater comprises a heating body with a pipeline inside, the water heater obtains anti-freezing heat according to the material of the heating body, the water content in the pipeline and the temperature rise of water temperature by measuring and calculating, and meanwhile, the anti-freezing preset parameter of the heating body is determined according to the anti-freezing heat; when the water temperature in the pipeline is too low, the water heater is started to prevent freezing, and the freezing prevention preset parameters of the heating body are adjusted by combining the external environment temperature and the time information, so that the generated heat meets the freezing prevention requirement of the heating body. The anti-freezing control method provided by the invention can be carried out in a standby state of the water heater, and when the temperature of water in the water heater is low, the heating parameters of the heating body are adjusted according to the environmental temperature and time information so as to ensure the anti-freezing effect;
the invention has the following patent: the application discloses a water heater and a method for determining the anti-freezing heating element thereof and an anti-freezing control method (with the application number of CN202011338269.2, the application date is 2020, 11 and 25). The water heater comprises a pipeline, a shell and an anti-freezing heating element, wherein the pipeline is arranged in the shell. Obtaining the heat loss rate of an anti-freezing heating element of the water heater; selecting an anti-freezing heating element with the size corresponding to the heat loss rate according to the heat loss rate; and arranging the selected anti-freezing heating element on the pipeline and in the shell. The anti-freezing heating element is selected according to the heat loss rate, and the size of the anti-freezing heating element is in positive correlation with the heat loss rate. And then when the heat loss rate of water heater is great, correspond the anti-freezing heating member of selection great size to guarantee that the heating member of preventing frostbite can guarantee the heating to the pipeline when overcoming the heat loss, and then guarantee the effect of preventing frostbite. And when the heat loss of the water heater is smaller, the anti-freezing heating element with a smaller size can be correspondingly selected, so that the cost increase caused by the overlarge size of the anti-freezing heating element is avoided.
According to the scheme, when the anti-freezing requirement of the heat collecting system pipeline is met, the heating body is additionally arranged in the inner pipeline of the water heater, the heating parameters of the heating body are adjusted according to the ambient temperature and the time information, and the power consumption loss and the cost of the heating body are reduced as far as possible while the anti-freezing effect is guaranteed. However, the above solution still presents some problems:
(1) the heating and unfreezing time of the pipeline is long by adopting the heating body, so that the heating time of more than ten minutes is usually required by common heat tracing belt, the energy waste is caused, and the efficiency is low;
(2) the scheme of simply adopting the heating body to heat the unfreezing pipeline still has higher cost, and the heat loss rate of the anti-freezing heating element is also higher, so that the cost is still not ideally controlled.
Disclosure of Invention
1. Problems to be solved
Aiming at the problems that although a heating body is additionally arranged in an internal pipeline of a water heater in the prior art, heating can be carried out at any time, the heat loss rate and the cost are high, the invention provides the water pipeline anti-freezing control device and the control method thereof.
2. Technical scheme
As a first aspect of the present invention, a freeze-proofing control device for a water delivery pipeline is provided, which includes a heat collector and a heat-preservation water tank, wherein the heat collector and the heat-preservation water tank are communicated with each other through a heat storage water tank, an electric heating device is disposed inside the heat storage water tank, and the heat storage water tank is used for respectively providing hot water to the heat collector and the heat-preservation water tank.
The preferable technical scheme is as follows:
as above a hydraulic pipeline freeze-proof control device, the play water end of heat collector with be provided with circulating pump P1 on the connecting pipe between the end of intaking of heat storage water tank, heat storage water tank's play water end with be provided with circulating pump P2 on the connecting pipe between the end of intaking of holding water tank, holding water tank's play water end is linked together with the water pipeline for the user, just be provided with circulating pump P3 on the connecting pipe between holding water tank's play water end and the water pipeline for the user.
According to the anti-freezing control device for the water conveying pipeline, the water outlet end of the heat storage water tank and the water outlet end of the heat storage water tank are both connected with municipal pipelines and are used for respectively supplementing water to the heat storage water tank and the heat storage water tank.
As above-mentioned a water pipeline freeze-proof control device, be provided with solenoid valve DCF1 on the water outlet end of heat storage water tank and the connecting pipeline of municipal pipeline, be provided with solenoid valve DCF2 on the water outlet end of holding water tank and the connecting pipeline between the user's water pipeline, be provided with solenoid valve DCF3 on the water outlet end of heat storage water tank and the connecting pipeline of municipal pipeline.
As a second aspect of the present invention, there is provided an antifreeze control method for an antifreeze control of a heat collector in an antifreeze control apparatus for a water transportation pipeline, as described above, the antifreeze control method including:
acquiring the current water temperature of a pipeline in the heat collector;
if the water temperature in the current heat collector internal pipeline is less than or equal to a first preset temperature value, a circulating pump P1 is started, hot water in the heat storage water tank is pumped into the heat collector internal pipeline according to a first preset heating rule, and cold water in the heat collector internal pipeline enters the heat storage water tank;
after a period of time, obtaining the water temperature of the pipeline in the current heat collector for the second time, and if the water temperature of the pipeline in the current heat collector is still less than or equal to a first preset temperature value, turning on the electric heating device to heat the heat storage water tank according to a second preset heating rule;
acquiring the current water temperature of the heat storage water tank in real time;
and if the water temperature of the heat storage water tank is higher than a first preset temperature value, the electric heating device is turned off, and heating is stopped.
The preferable technical scheme is as follows:
in the antifreeze control method for the water pipeline, the first preset heating rule and the second preset heating rule both include a preset heating interval and a preset heating time.
As above-mentioned freeze-proof control method of water pipe, after heating the heat storage water tank with second preset heating rule, if present the temperature of heat storage water tank is greater than first preset temperature value, before closing electric heating device, still include:
adjusting the heating power of the electric heating device, and continuing to heat the heat storage water tank according to a third preset heating rule, so that the water temperature of the heat storage water tank is larger than or equal to a second preset temperature value at present, and the second preset temperature value is larger than the first preset temperature value.
As a third aspect of the present invention, there is provided an antifreeze control method for a user's antifreeze control of a water pipe in an antifreeze control apparatus for a water pipe as described above, the antifreeze control method comprising:
acquiring the water temperature of a water pipeline of a current user;
if the water temperature of the water pipeline of the current user is smaller than or equal to a third preset temperature value, opening a solenoid valve DCF2, starting a circulating pump P3, pumping cold water in the water pipeline of the current user into a heat-preservation water tank according to a fourth preset heating rule, and enabling hot water in the heat-preservation water tank to enter the water pipeline of the current user;
after a period of time, obtaining the water temperature of the pipeline in the current heat collector for the second time, and if the water temperature of the water pipeline of the current user is still less than or equal to a third preset temperature value, opening the electric heating device, and heating the heat storage water tank according to a fifth preset heating rule;
acquiring the current water temperature of the heat storage water tank in real time;
and if the water temperature of the heat storage water tank is higher than a third preset temperature value, the electric heating device is turned off, and heating is stopped.
The preferable technical scheme is as follows:
as above, the antifreeze control method for water pipelines, after heating the heat storage water tank according to a fifth preset heating rule, if the water temperature of the heat storage water tank is greater than a third preset temperature value, before turning off the electric heating device, further includes:
adjusting the heating power of the electric heating device, and continuing to heat the heat storage water tank according to a sixth preset heating rule, so that the water temperature of the heat storage water tank is greater than or equal to a fourth preset temperature value at present, wherein the fourth preset temperature value is greater than the third preset temperature value.
The antifreeze control method for a heat collector in an antifreeze control device for a water conveying pipeline or a water pipeline for users as described in any one of the above, further comprising:
acquiring the current water temperature of the heat storage water tank in real time;
if the current water temperature of the heat storage water tank is less than or equal to a fifth preset temperature value, turning on the electric heating device until the current water temperature of the heat storage water tank is greater than or equal to a sixth preset temperature value, and stopping heating; the sixth preset temperature value is greater than the fifth preset temperature value.
3. Advantageous effects
Compared with the prior art, the invention has the beneficial effects that:
(1) according to the invention, hot water in the heat storage water tank is firstly pumped into the pipeline in the heat collector, and cold water in the pipeline in the heat collector enters the heat storage water tank; or the cold water in the water pipeline of the current user is pumped into the heat preservation water tank, the hot water in the heat preservation water tank enters the water pipeline of the user, and the whole circulation pipeline is prevented from being frozen and blocked by water circulation; when the environmental temperature value is low and the freezing blockage of the whole circulation pipeline cannot be avoided by simply utilizing water circulation, the electric heating device in the heat storage water tank is controlled to heat the water in the heat storage water tank, and the water circulation is combined, so that the water temperature in the whole circulation pipeline is higher than the freezing temperature, the water in the pipeline is ensured not to freeze, and the anti-freezing effect of the seed water conveying pipeline is effectively ensured;
(2) according to the anti-freezing control device and method for the water conveying pipeline, on one hand, the electric heating device is adopted to directly heat the heat storage water tank, the heat storage water tank can be rapidly heated, and the efficiency is high; on the other hand, the water body in the heat storage water tank can be heated, so that the heat generated when the heating element and the pipe wall of the pipeline exchange heat in the conventional prior art can be avoided from the heat loss perspective, and the waste of energy is reduced; moreover, the modes of pipeline circulating anti-freezing and heating and unfreezing of the heating body are combined, and the working energy consumption when the heating body is directly used for heating and unfreezing is reduced by utilizing the pipeline circulating anti-freezing, so that the anti-freezing cost of the whole device is greatly reduced.
Drawings
FIG. 1 is a schematic diagram of the structure of a water pipeline anti-freezing control device according to the present invention;
fig. 2 is a flowchart illustrating a method for controlling freeze protection of a water pipeline according to an embodiment of the present invention;
in the figure: 100. a heat collector; 200. a heat storage water tank; 300. a heat preservation water tank.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the following embodiments are used for illustrating the present invention and are not intended to limit the scope of the present invention.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
Example 1
As shown in fig. 1, the embodiment provides a water pipeline anti-freezing control device, including heat collector 100 and holding water tank 300, be linked together through heat storage water tank 200 between heat collector 100 and the holding water tank 300, the inside of heat storage water tank 200 is equipped with electric heating device, heat storage water tank 200 is used for providing hot water to heat collector 100 and holding water tank 300 respectively. In this embodiment, the hot water tank 300 is also connected to a water pipe for users. When freezing prevention is needed, hot water is supplied to the heat collector 100 or the heat-preservation water tank 300 through the heat storage water tank 200, so that the temperature of the pipeline inside the heat collector 100 or the water pipeline of a user can be increased, and the pipeline inside the heat collector 100 or the water pipeline of the user is prevented from freezing.
Specifically, the play water end of heat collector 100 with be provided with circulating pump P1 on the connecting pipeline between the end of intaking of heat storage water tank 200, heat storage water tank 200 go out the water end with be provided with circulating pump P2 on the connecting pipeline between the end of intaking of holding water tank 300, holding water tank 300's play water end is linked together with the water pipeline for the user, just be provided with circulating pump P3 on the connecting pipeline between holding water tank 300's play water end and the water pipeline for the user. In this embodiment, the circulation pump P1, the circulation pump P2, and the circulation pump P3 are mainly used to replenish water to the heat collector 100, the heat-preservation water tank 300, or the heat storage water tank 200.
Specifically, the water outlet end of the heat storage water tank 200 and the water outlet end of the heat storage water tank 200 are connected with a municipal pipeline, and are used for respectively supplementing water to the heat storage water tank 200 and the heat storage water tank 200.
More specifically, be provided with solenoid valve DCF1 on the delivery end of heat storage water tank 200 and the connecting pipeline of municipal pipeline, be provided with solenoid valve DCF2 on the delivery end of holding water tank 300 and the connecting pipeline between the user water pipeline, be provided with solenoid valve DCF3 on the delivery end of heat storage water tank 200 and the connecting pipeline of municipal pipeline. In this embodiment, the electromagnetic valves DCF1, DCF2, and DCF3 are mainly used to control the water replenishing process of the heat collector 100, the heat-insulating water tank 300, or the heat storage water tank 200. Taking the electromagnetic valve DCF3 as an example, when the water level of the hot water storage tank 300 is lower than the set water level and the water temperature T2 of the hot water storage tank 200 is lower than 60 ℃, the electromagnetic valve DCF3 can be started to replenish water to the hot water storage tank 300; when the water temperature T3 of the heat preservation water tank 300 is more than or equal to the set temperature plus 5 ℃, or the water level of the water tank B reaches the set water level, water supplement is stopped, and the function of water supplement at the fixed water level is further realized.
It should be noted that, in the present embodiment, no matter the hot water tank 300 or the hot water storage tank 200, when the water temperature in the water tank is lower than the set value, or when the water level in the water tank is lower than the set water level, automatic water replenishment can be achieved. Specifically, a water level sensing device or a temperature sensing device can be added in the water tank, and the electromagnetic valve devices in the embodiment are combined to realize the operation, which is the prior art and is not repeated in the embodiment.
In addition, in the present embodiment, the electric heating device may be an electric power device such as an electric heater. Since the electric heating device is disposed inside the heat storage water tank 200, the heat storage water tank 200 has a constant temperature function. For example, when the temperature of the water in the holding water tank 300 is lower than a set temperature, for example, 5 degrees celsius, the electric heating device may heat the water in the water tank for a set period of time, and stop heating until the temperature of the water in the water tank reaches the set temperature.
On the basis of the foregoing solution, it can be seen that the hot water storage tank 200 in this embodiment has a constant temperature function, the heat collector 100, the hot water storage tank 200, and the heat-preservation water tank 300 are communicated with each other, and water circulation can be achieved by means of the circulation pump P1, the circulation pump P2, and the circulation pump P3. On the basis, in a conventional application scene, in order to prevent the internal pipeline of the heat collector 100 or a user from freezing the water pipeline of the user, hot water is supplied to the heat collector 100 or the heat preservation water tank 300 through the heat storage water tank 200, so that the temperature of the internal pipeline of the heat collector 100 or the water pipeline of the user can be raised, and the internal pipeline of the heat collector 100 or the water pipeline of the user is prevented from freezing; in some other application scenarios, for example, in winter with severe cold, because the environmental temperature value is low, at this time, hot water in the heat storage water tank 200 can firstly enter the pipeline in the heat collector 100, and cold water in the pipeline in the heat collector 100 enters the heat storage water tank 200; or the cold water in the water pipeline of the current user is pumped into the heat preservation water tank 300, the hot water in the heat preservation water tank 300 enters the water pipeline of the user, and the whole circulation pipeline is prevented from being frozen and blocked by water circulation; and when the ambient temperature value is lower, simply utilize hydrologic cycle can't avoid whole circulating line to take place to freeze when stifled, the electric heater unit in the heat storage water tank 200 of controlling again heats the water in the heat storage water tank 200, combines hydrologic cycle for the temperature of water in the whole circulating line is greater than the temperature that freezes, guarantees that the water in the pipeline can not freeze, thereby has effectively guaranteed the frostproofing effect of kind of water pipeline.
It should be noted that, compared to the manner of disposing the heating member inside the heat collector 100 in the prior art, on one hand, the electric heating device is adopted to directly heat the heat storage water tank 200 in the embodiment, so that the heat storage water tank 200 can be rapidly heated, and the efficiency is high; on the other hand, in the embodiment, the water in the heat storage water tank 200 can be heated, so that from the perspective of heat loss, heat generated when the heat generating member exchanges heat with the pipe wall of the pipeline in the conventional prior art can be avoided, and waste of energy is reduced; moreover, combine together the mode that pipeline circulation was frostproofing and the heating of heating member unfreezes in this embodiment, utilize the pipeline circulation to prevent frostbite and reduce the work energy consumption when directly adopting the heating of heating member to unfreeze for the cost of preventing frostbite of whole device reduces by a wide margin.
Example 2
The embodiment provides an anti-freezing control method for a water conveying pipeline, which is mainly applied to anti-freezing control of a heat collector in the anti-freezing control device for the water conveying pipeline as shown in embodiment 1, and as shown in fig. 2, the anti-freezing control method includes:
acquiring the current water temperature of a pipeline in the heat collector;
if the water temperature in the current heat collector internal pipeline is less than or equal to a first preset temperature value, a circulating pump P1 is started, hot water in the heat storage water tank is pumped into the heat collector internal pipeline according to a first preset heating rule, and cold water in the heat collector internal pipeline enters the heat storage water tank;
after a period of time, obtaining the water temperature of the pipeline in the current heat collector for the second time, and if the water temperature of the pipeline in the current heat collector is still less than or equal to a first preset temperature value, turning on the electric heating device to heat the heat storage water tank according to a second preset heating rule;
acquiring the current water temperature of the heat storage water tank in real time;
and if the water temperature of the heat storage water tank is higher than a first preset temperature value, the electric heating device is turned off, and heating is stopped.
In this embodiment, the first preset heating rule and the second preset heating rule both include a preset heating interval and a preset heating time. Specifically, the preset heating interval may be 1 minute per heating interval, and the preset heating time may be 1 minute per heating; the first preset temperature value can be the freezing temperature of the real-time water flow, and is generally 0 ℃; the period of time is at least longer than the time for completing cold and heat exchange between the hot water in the hot water storage tank and the cold water in the pipeline in the heat collector.
The anti-freezing control method for the water delivery pipeline is mainly applied to anti-freezing of the heat collector in the severe cold environment. The embodiment firstly obtains the water temperature of the pipeline in the current heat collector; comparing the current water temperature of the pipeline in the heat collector with the freezing temperature, and judging whether the pipeline in the heat collector can be frozen or not; if the temperature of the water in the current pipeline in the heat collector is lower than the freezing temperature, the water temperature of the pipeline in the heat collector is improved by utilizing the water circulation of hot water in the heat storage water tank and cold water in the pipeline in the heat collector, and the pipeline in the heat collector is prevented from freezing; when the anti-freezing effect of the pipeline in the heat collector cannot be guaranteed only by using the pipeline circulation anti-freezing, the electric heating device is used for heating the heat storage water tank, so that the heat exchange efficiency is improved when hot water in the heat storage water tank and cold water in the pipeline in the heat collector circulate, the water temperature of the pipeline in the heat collector is improved, and the pipeline in the heat collector is further prevented from freezing; meanwhile, the whole anti-freezing method combines the modes of pipeline circulating anti-freezing and heating and unfreezing of the heating body, and the working energy consumption when the electric heating device is directly used for heating and unfreezing is reduced by utilizing the pipeline circulating anti-freezing, so that the anti-freezing cost of the whole device is greatly reduced.
Example 3
The present embodiment provides a water pipeline anti-freezing control method, which is basically the same as in embodiment 2. The difference is that the antifreeze control method in this embodiment further includes:
after heating heat storage water tank with the preset heating rule of second, if present heat storage water tank's temperature is greater than first preset temperature value, before closing electric heater unit, still includes:
adjusting the heating power of the electric heating device, and continuing to heat the heat storage water tank according to a third preset heating rule, so that the water temperature of the heat storage water tank is larger than or equal to a second preset temperature value at present, and the second preset temperature value is larger than the first preset temperature value.
Specifically, the second preset temperature value may be set to 3 degrees celsius or 5 degrees celsius, or the like. The second preset temperature value is designed by considering the heat loss of hot water in the hot water storage tank in the exchange and transmission processes; through guaranteeing heat storage water tank's temperature is greater than or equal to the second and predetermines the temperature value, and the second is predetermine the temperature value and is greater than first preset temperature value, and then in the in-service use even consider heat loss still can make the pipeline temperature in the heat collector be greater than freezing temperature to the frostproofing effect of pipeline has been guaranteed.
Example 4
The present embodiment provides a method for controlling freeze protection of a water pipeline in a water pipeline freeze protection control device according to embodiment 1, including:
acquiring the water temperature of a water pipeline of a current user;
if the water temperature of the water pipeline of the current user is smaller than or equal to a third preset temperature value, opening a solenoid valve DCF2, starting a circulating pump P3, pumping cold water in the water pipeline of the current user into a heat-preservation water tank according to a fourth preset heating rule, and enabling hot water in the heat-preservation water tank to enter the water pipeline of the current user;
after a period of time, obtaining the water temperature of the pipeline in the current heat collector for the second time, and if the water temperature of the water pipeline of the current user is still less than or equal to a third preset temperature value, opening the electric heating device, and heating the heat storage water tank according to a fifth preset heating rule;
acquiring the current water temperature of the heat storage water tank in real time;
and if the water temperature of the heat storage water tank is higher than a third preset temperature value, the electric heating device is turned off, and heating is stopped.
In this embodiment, the fourth preset heating rule and the fifth preset heating rule both include a preset heating interval and a preset heating time. Specifically, the preset heating interval may be 1 minute per heating interval, and the preset heating time may be 1 minute per heating; the fourth preset temperature value can be the freezing temperature of water flow in the water pipeline of the user, and is generally 0 ℃.
The anti-freezing control method for the water pipeline is mainly applied to anti-freezing of the water pipeline for users in the severe cold environment. The embodiment firstly obtains the water temperature of a water pipeline for a current user; comparing the water temperature of the current water pipeline for the user with the freezing temperature of water flow in the water pipeline for the user, and judging whether the pipeline in the heat collector is frozen or not; if the water temperature of the water pipeline for the user is lower than the freezing temperature, the water temperature of the water pipeline for the user is improved by utilizing the water circulation of hot water in the heat storage water tank and cold water of the water pipeline for the user, and the water pipeline for the user is prevented from being frozen; when the anti-freezing effect of the pipeline in the heat collector cannot be guaranteed only by using the pipeline circulation anti-freezing, the electric heating device is used for heating the heat storage water tank, so that the heat exchange efficiency of hot water in the heat storage water tank and cold water of a water pipeline for a user is improved while the water temperature of the water pipeline for the user is improved, and the water pipeline for the user is further frozen; meanwhile, the whole anti-freezing method combines the modes of pipeline circulating anti-freezing and heating and unfreezing of the heating body, and the working energy consumption when the electric heating device is directly used for heating and unfreezing is reduced by utilizing the pipeline circulating anti-freezing, so that the anti-freezing cost of the whole device is greatly reduced.
Example 5
The present embodiment provides a water pipeline anti-freezing control method, which is basically the same as in embodiment 4. The difference is that the antifreeze control method in this embodiment further includes:
after heating the heat storage water tank with the fifth preset heating rule, if present the temperature of heat storage water tank is greater than the third preset temperature value, before closing electric heater unit, still include:
adjusting the heating power of the electric heating device, and continuing to heat the heat storage water tank according to a sixth preset heating rule, so that the water temperature of the heat storage water tank is greater than or equal to a fourth preset temperature value at present, wherein the fourth preset temperature value is greater than the third preset temperature value.
Specifically, the fourth preset temperature value may be set to 3 degrees celsius or 5 degrees celsius, or the like. The fourth preset temperature value is designed by considering the heat loss of hot water in the hot water storage tank in the exchange and transmission processes; through guaranteeing heat storage water tank's temperature is greater than or equal to the fourth and predetermines the temperature value, and the fourth is predetermine the temperature value and is greater than the third is predetermine the temperature value, and then even consider heat loss in the in-service use still can make user's water pipeline temperature be greater than its freezing temperature to the frostproofing effect of pipeline has been guaranteed.
Examples 6 to 9
The embodiment provides an anti-freezing control method for a water conveying pipeline, which is basically the same as any one of embodiments 2 to 5, except that the anti-freezing control method further comprises the following steps:
acquiring the current water temperature of the heat storage water tank in real time;
if the current water temperature of the heat storage water tank is less than or equal to a fifth preset temperature value, turning on the electric heating device until the current water temperature of the heat storage water tank is greater than or equal to a sixth preset temperature value, and stopping heating; the sixth preset temperature value is greater than the fifth preset temperature value.
Specifically, the fifth preset temperature value may be 10 degrees celsius or 15 degrees celsius; the sixth preset temperature value may be 20 degrees celsius or 25 degrees celsius. The mode that this embodiment passed through the electric heat and is prevented frostbite guarantees no matter the temperature in the heat storage water tank all be in on freezing the temperature under any environment for heat storage water tank can provide the required hot water that prevents frostbite for heat collector and holding water tank at any time, has guaranteed the steady operation of the frostproofing control of conduit among this embodiment.
The examples described herein are merely illustrative of the preferred embodiments of the present invention and do not limit the spirit and scope of the present invention, and various modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the design concept of the present invention shall fall within the protection scope of the present invention.
Claims (10)
1. The utility model provides a water pipeline freeze-proof control device which characterized in that: including heat collector and holding water tank, be linked together through heat storage water tank between heat collector and the holding water tank, heat storage water tank's inside is equipped with electric heater unit, heat storage water tank is used for providing hot water to heat collector and holding water tank respectively.
2. The water pipeline anti-freezing control device as claimed in claim 1, wherein: the play water end of heat collector with be provided with circulating pump P1 on the connecting pipeline between the end of intaking of heat storage water tank, heat storage water tank's play water end with be provided with circulating pump P2 on the connecting pipeline between holding water tank's the end of intaking, holding water tank's play water end is linked together with user's water pipeline, just be provided with circulating pump P3 on the connecting pipeline between holding water tank's play water end and user's water pipeline.
3. The water pipeline anti-freezing control device as claimed in claim 2, wherein: the water outlet end of the heat storage water tank and the water outlet end of the heat storage water tank are connected with a municipal pipeline and used for respectively supplementing water to the heat storage water tank and the heat storage water tank.
4. The water pipeline anti-freezing control device as claimed in claim 3, wherein: be provided with solenoid valve DCF1 on the water outlet end of heat storage water tank and the connecting pipeline of municipal pipeline, be provided with solenoid valve DCF2 on the water outlet end of holding water tank and the connecting pipeline between the user water pipeline, be provided with solenoid valve DCF3 on the water outlet end of heat storage water tank and the connecting pipeline of municipal pipeline.
5. A water pipeline anti-freezing control method for the anti-freezing control of the heat collector in the water pipeline anti-freezing control device as claimed in claim 4, which is characterized in that the anti-freezing control method comprises the following steps:
acquiring the current water temperature of a pipeline in the heat collector;
if the water temperature in the current heat collector internal pipeline is less than or equal to a first preset temperature value, a circulating pump P1 is started, hot water in the heat storage water tank is pumped into the heat collector internal pipeline according to a first preset heating rule, and cold water in the heat collector internal pipeline enters the heat storage water tank;
after a period of time, obtaining the water temperature of the pipeline in the current heat collector for the second time, and if the water temperature of the pipeline in the current heat collector is still less than or equal to a first preset temperature value, turning on the electric heating device to heat the heat storage water tank according to a second preset heating rule;
acquiring the current water temperature of the heat storage water tank in real time;
and if the water temperature of the heat storage water tank is higher than a first preset temperature value, the electric heating device is turned off, and heating is stopped.
6. The water pipeline anti-freezing control method as claimed in claim 5, wherein the first preset heating rule and the second preset heating rule each include a preset heating interval and a preset heating time.
7. The antifreeze control method for water pipelines according to claim 5, wherein after the hot water storage tank is heated according to a second preset heating rule, if the current water temperature of the hot water storage tank is higher than a first preset temperature value, before the electric heating device is turned off, the method further comprises:
adjusting the heating power of the electric heating device, and continuing to heat the heat storage water tank according to a third preset heating rule, so that the water temperature of the heat storage water tank is larger than or equal to a second preset temperature value at present, and the second preset temperature value is larger than the first preset temperature value.
8. A water pipeline anti-freezing control method for anti-freezing control of a water pipeline for a user in the water pipeline anti-freezing control device of claim 4, the anti-freezing control method comprising:
acquiring the water temperature of a water pipeline of a current user;
if the water temperature of the water pipeline of the current user is smaller than or equal to a third preset temperature value, opening a solenoid valve DCF2, starting a circulating pump P3, pumping cold water in the water pipeline of the current user into a heat-preservation water tank according to a fourth preset heating rule, and enabling hot water in the heat-preservation water tank to enter the water pipeline of the current user;
after a period of time, obtaining the water temperature of the pipeline in the current heat collector for the second time, and if the water temperature of the water pipeline of the current user is still less than or equal to a third preset temperature value, opening the electric heating device, and heating the heat storage water tank according to a fifth preset heating rule;
acquiring the current water temperature of the heat storage water tank in real time;
and if the water temperature of the heat storage water tank is higher than a third preset temperature value, the electric heating device is turned off, and heating is stopped.
9. The antifreeze control method for water pipelines according to claim 8, wherein after the hot water storage tank is heated according to a fifth preset heating rule, if the current water temperature of the hot water storage tank is higher than a third preset temperature value, before the electric heating device is turned off, the method further comprises:
adjusting the heating power of the electric heating device, and continuing to heat the heat storage water tank according to a sixth preset heating rule, so that the water temperature of the heat storage water tank is greater than or equal to a fourth preset temperature value at present, wherein the fourth preset temperature value is greater than the third preset temperature value.
10. The water pipeline anti-freezing control method as claimed in any one of claims 5 to 9, further comprising:
acquiring the current water temperature of the heat storage water tank in real time;
if the current water temperature of the heat storage water tank is less than or equal to a fifth preset temperature value, turning on the electric heating device until the current water temperature of the heat storage water tank is greater than or equal to a sixth preset temperature value, and stopping heating; the sixth preset temperature value is greater than the fifth preset temperature value.
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