CN117167804B - Constant temperature control system of heating and ventilation equipment and control method thereof - Google Patents
Constant temperature control system of heating and ventilation equipment and control method thereof Download PDFInfo
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- CN117167804B CN117167804B CN202311450479.4A CN202311450479A CN117167804B CN 117167804 B CN117167804 B CN 117167804B CN 202311450479 A CN202311450479 A CN 202311450479A CN 117167804 B CN117167804 B CN 117167804B
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 25
- 238000009423 ventilation Methods 0.000 title claims abstract description 25
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 391
- 230000001105 regulatory effect Effects 0.000 claims abstract description 40
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- 230000008859 change Effects 0.000 claims description 16
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- 238000012360 testing method Methods 0.000 claims description 8
- 230000017105 transposition Effects 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 claims description 4
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- 238000013507 mapping Methods 0.000 claims description 2
- 230000001276 controlling effect Effects 0.000 abstract description 9
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Abstract
The invention relates to the technical field of heating and ventilation equipment, in particular to a constant temperature control system and a control method thereof of the heating and ventilation equipment, comprising the following steps: a heat exchange assembly; a secondary side water inlet assembly; further comprises: the heat mixing assembly comprises a heat mixing tank which is fixedly connected with the primary side water diversion pneumatic regulating valve, the heat exchange tank and the second water diversion pneumatic regulating valve; and a control assembly. According to the invention, the opening and closing of the primary side water diversion pneumatic regulating valve and the second water diversion pneumatic regulating valve are controlled, so that the water quantity of the primary side water inlet and the secondary side water return pipe can be controlled, and the temperature of the mixed liquid can be controlled by matching with the water of the secondary side water outlet, thereby achieving the purpose of controlling the temperature of secondary side water supply; through setting up indoor temperature and humidity sensor and outdoor temperature changer, can detect indoor humiture and outdoor temperature, according to the data of each changer again, can provide data for pneumatic control valve's control to realize dynamic management and control, improve management efficiency, avoid end user overheated, far-end user supercooling.
Description
Technical Field
The invention relates to the technical field of heating and ventilation equipment, in particular to a constant temperature control system and a control method of the heating and ventilation equipment.
Background
Heating ventilation is one of the main constituent contents of a building construction, and includes: heating, ventilation and air conditioning. The constant temperature control system combines various parts in temperature control, such as an automatic instrument and a control unit, by utilizing advanced technologies, such as the internet of things technology, the network communication technology and the like, and realizes constant temperature through a series of calculation and adjustment.
Along with the continuous development of the technological level, the living standard of people is also continuously improved, and simultaneously, higher requirements on living comfort are also provided. At present, the traditional heating ventilation system adopts a manual control method for controlling the temperature mostly, such as a large-space constant-temperature workshop low-energy heating ventilation system disclosed by patent application No. CN217685712U, when the patent application is operated by an exhaust fan, the frequency of the exhaust fan is gradually increased according to program logic through time, the thirty-five to fifty hertz process is realized, negative pressure caused by overlarge indoor pressure fluctuation is avoided, the exhaust fan is started according to the comparison of indoor temperature and outdoor temperature more than three meters, a timing switch is used, the exhaust fan is required to be gradually increased according to set time, the indoor negative pressure caused by the insufficient fresh air is avoided, the exhaust fan is closed after twenty minutes (settable), the exhaust fan is circularly switched on and off, a large number of refrigeration equipment and exhaust equipment are used, the energy waste is effectively reduced according to the temperature circulation of an upper space and a lower space is kept away from according to thermal information, and the constant-temperature effect is improved. When the fresh air rainproof shutter is used, the driving device is started to drive the cleaning device to clean the blades, so that excessive dust and sundries attached to the blades are cleaned, dust accumulation is reduced, and the two shutters are prevented from being blocked to influence use;
although the equipment can reduce the waste of energy sources and increase the constant temperature effect, the equipment still has the problem that the heat supply quality is difficult to balance, and the conditions of overheating of a near-end user and supercooling of a far-end user often occur, so that the waste of manpower and material resources and environmental pollution are extremely easy to cause. Based on the above circumstances, providing a heating, ventilation and constant temperature control system is one of the important subjects currently in need of research.
In view of this, we propose a thermostatic control system of a heating ventilation device and a control method thereof.
Disclosure of Invention
The invention provides a constant temperature control system and a control method of heating and ventilation equipment, which are used for overcoming the defects of difficult management, resource waste, difficulty in balancing heat supply quality, overheating of a near-end user and supercooling of a far-end user in the prior art.
The technical scheme of the invention is as follows:
a thermostatic control system for a heating ventilation apparatus, comprising:
the heat exchange assembly comprises a heat exchange tank, the heat exchange tank is connected with a primary side water channel and a secondary side water channel, the primary side water channel and the secondary side water channel exchange heat in the heat exchange tank, and a primary side water diversion pneumatic regulating valve is fixedly arranged on the primary side of the heat exchange tank and can separate out primary side hot water without entering the heat exchange tank;
the secondary side water inlet assembly comprises a secondary side water return pipe, the secondary side water return pipe is connected with the heat exchange tank, a second water diversion air-brake adjusting valve is fixedly arranged at the joint of the secondary side water return pipe and the heat exchange tank and is fixedly connected with the secondary side water return pipe, and the second water diversion air-brake adjusting valve can prevent water in the secondary side water return pipe from entering the heat exchange tank;
further comprises:
the heat mixing assembly comprises a heat mixing tank, wherein the heat mixing tank is mixed with a primary side water diversion pneumatic regulating valve, a heat exchange tank and a second water diversion pneumatic regulating valve, and secondary side backwater subjected to heat exchange, primary side hot water and secondary side backwater not subjected to heat exchange can be mixed in the heat mixing tank;
the control assembly comprises an indoor temperature and humidity sensor and an outdoor temperature transmitter, and data detected by the indoor temperature and humidity sensor and the outdoor temperature transmitter can be transmitted to the receiving antenna in a wireless transmission mode.
As the preferable technical scheme of the invention, a primary side water inlet and a primary side water outlet are fixedly arranged on the primary side of the heat exchange tank, heat exchange temperature transmitters are fixedly arranged on the primary side water inlet and the primary side water outlet, and a first pressure transmitter and a first flow transmitter are fixedly arranged at the primary side water inlet.
As the preferable technical scheme of the invention, the primary side water diversion pneumatic regulating valve is fixedly arranged at the primary side water inlet and is positioned between the first pressure transmitter and the heat exchange temperature transmitter, the water outlet of the primary side water diversion pneumatic regulating valve is connected with the heat exchange tank through a pipeline, and the first pressure transmitter and the first flow transmitter are fixedly arranged at the tail end of the pipeline.
As the preferable technical scheme of the invention, a secondary side water inlet and a secondary side water outlet are fixedly arranged on the secondary side of the heat exchange tank, a heat exchange temperature transmitter is fixedly arranged on the secondary side water inlet and the secondary side water outlet, and the secondary side water inlet is fixedly connected with a secondary side water return pipe.
As the preferable technical scheme of the invention, the water outlet of the second water diversion and gas regulating valve is fixedly connected with the heat mixing tank through a pipeline, and a second pressure transmitter and a second flow transmitter are fixedly arranged at the tail end of the pipeline.
As the preferable technical scheme of the invention, the middle part of the secondary side water return pipe is fixedly connected with water supplementing equipment, and a second pressure transmitter and a second flow transmitter are fixedly arranged on the secondary side water return pipe and positioned at two sides of the water supplementing equipment.
As the preferable technical scheme of the invention, the water supplementing device comprises a water supplementing tank, and the water outlet of the water supplementing tank is fixedly connected with the secondary side water return pipe through a water supplementing pump.
As the preferable technical scheme of the invention, the top of the heat mixing tank is fixedly provided with a secondary side hot water inlet, a secondary side water diversion inlet and a primary side water diversion inlet, and the secondary side hot water inlet, the secondary side water diversion inlet and the primary side water diversion inlet are fixedly provided with a mixed temperature transmitter.
As the preferable technical scheme of the invention, the bottom of the front side of the heat mixing tank is fixedly provided with a water feeding pump, a water feeding pressure transmitter is fixedly arranged between the water feeding pump and the heat mixing tank, and the bottom end of the heat mixing tank is fixedly provided with a mixed temperature transmitter.
The control method of the constant temperature control system of the heating and ventilation equipment comprises the following steps:
step one: the water return treatment, the secondary side water return of the user side passes through, returns to the heat exchange station through the secondary side water return pipe, and pumps the water storage of the water supplementing tank into the secondary side water return pipe through the water supplementing pump before heat exchange, so that the water return pressure in the secondary side water return pipe reaches the standard value;
step two: the heat exchange is carried out, high-temperature hot water conveyed from a heat source enters the heat exchange tank from a primary side water inlet through a pipeline, secondary side backwater enters the heat exchange tank from a secondary side water inlet, heat exchange is carried out between the high-temperature hot water and the secondary side backwater in the heat exchange tank, then the primary side hot water after heat exchange is discharged from a primary side water outlet, the hot water returns to the heat source through the pipeline, and heated secondary side backwater is discharged from a secondary side water outlet;
step three: temperature detection, namely detecting the water discharge temperature of primary side water supply, secondary side backwater after water supplementing and a secondary side water outlet;
step four: mixing heat, namely enabling backwater discharged from a secondary side water outlet after heat exchange to enter a heat mixing tank through a secondary side hot water inlet, respectively injecting primary side hot water or secondary side low-temperature cold water through a secondary side water diversion inlet and a primary side water diversion inlet, and mixing water from three sources through stirring;
step five: controlling the temperature, namely controlling the opening and closing degree of the primary side water diversion pneumatic regulating valve and the second water diversion pneumatic regulating valve and controlling the quantity of primary side high-temperature hot water or secondary side low-temperature cold water so as to control the temperature of mixed water;
step six: supplying water, namely pumping the mixed water to a user through a water supply pump;
in the third step, the enthalpy data is calculated according to the temperature detection data, and the calculated enthalpy data is mapped to a high-dimensional spaceIn, and in the high-dimensional space->Middle construction temperature stability judgment function->：
；
Converting the above into an objective function：
；
Introducing relaxation variablesThe method comprises the following steps of:
；
introducing kernel functionsObtaining a predictive model->：
；
Wherein,enthalpy change data representing input, ++>Representing the total number of enthalpy change data, +.>And->Transposition of a low-dimensional space and transposition of a high-dimensional space, respectively,/->Representation->Transpose of->Representing a non-linear mapping->Represents regression threshold value->Represents penalty factors->、/>Representing sensitive variables +.>Representing support vector +_>Conjugate vector representing support vector, ++>Representing +.>Gao Weihan data, ->True judgment value representing test enthalpy change data, < ->Regression prediction judgment value representing test enthalpy change data, < >>Representing the relaxation vector>A conjugate vector representing the relaxation vector;
and dividing a stability threshold and a corresponding grade according to the temperature stability judging function, and judging the current temperature stability grade based on the stability threshold.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention can control the water quantity separated by the primary water inlet and the secondary water return pipe by controlling the opening and closing of the primary water diversion pneumatic regulating valve and the secondary water diversion pneumatic regulating valve, and can control the temperature of the mixed liquid by matching with the water of the secondary water outlet, thereby achieving the purpose of controlling the temperature of secondary water supply; by arranging the indoor temperature and humidity sensor and the outdoor temperature transmitter, the indoor temperature and the outdoor temperature can be detected, and then data can be provided for the control of the pneumatic regulating valve according to the data of each transmitter, so that dynamic control is realized, the management efficiency is improved, and overheating of an end user and supercooling of a far-end user are avoided;
2. according to the invention, the enthalpy data of the system can be calculated according to the temperature detection data, the counted enthalpy data is mapped into the high-dimensional space, a temperature stability judging function is constructed in the high-dimensional space, a stability threshold value and a corresponding grade are divided according to the temperature stability judging function, and the current temperature stability grade is judged based on the stability threshold value, so that the stability of the temperature can be effectively and dynamically analyzed and adjusted in real time, the stability of the constant temperature control system for temperature control is effectively ensured, and the constant temperature control effect on the temperature is achieved.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic view of a heat exchange assembly according to the present invention;
FIG. 3 is a schematic diagram of a secondary side water intake assembly according to the present invention;
FIG. 4 is a schematic diagram of a heat mixing assembly according to the present invention;
FIG. 5 is a schematic view of a stirring device according to the present invention;
FIG. 6 is a schematic diagram of a control assembly according to the present invention;
FIG. 7 is a schematic diagram of the signal transmission of the control assembly according to the present invention;
FIG. 8 is a schematic diagram of signal transmission of the control system according to the present invention;
FIG. 9 is a flow chart of the temperature control system of the present invention.
The significance of each punctuation mark in the figure is as follows:
1. a heat exchange assembly; 11. a heat exchange tank; 12. a primary water inlet; 13. a primary side water outlet; 14. a secondary side inlet; 15. a secondary side water outlet; 16. a heat exchange temperature transmitter; 17. a first pressure transmitter; 18. a first flow transmitter; 19. a primary side water diversion pneumatic regulating valve;
2. a secondary side water inlet assembly; 21. a secondary side return pipe; 22. a water supplementing tank; 23. a water supplementing pump; 24. a second pressure transmitter; 25. a second flow transmitter; 26. a second split water gas regulating valve;
3. a heat mixing assembly; 31. a heat mixing tank; 32. a secondary side hot water inlet; 33. a secondary side water diversion inlet; 34. a primary side water diversion inlet; 35. a stirring roller; 36. a stirring motor; 37. a hybrid temperature transmitter; 38. a water feeding pump; 39. a water supply pressure transmitter;
4. a control assembly; 41. a control box; 42. an indoor temperature and humidity sensor; 43. an outdoor temperature transmitter; 44. a receiving antenna; 45. an audible and visual alarm device; 46. and (5) a control knob.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Referring to fig. 1-8, the present invention is described in detail by the following embodiments:
a thermostatic control system for a heating ventilation apparatus, comprising:
the heat exchange assembly 1, the heat exchange assembly 1 includes heat exchange tank 11, and primary side water route and secondary side water route are connected to heat exchange tank 11, and primary side water route and secondary side water route take place heat exchange in heat exchange tank 11, and heat exchange tank 11 primary side fixed mounting has primary side to divide pneumatic control valve 19, can not get into heat exchange tank 11 with primary side hot water branch part. The primary side of the heat exchange tank 11 is welded with a primary side water inlet 12 and a primary side water outlet 13, the primary side water inlet 12 and the primary side water outlet 13 are fixedly provided with a heat exchange temperature transmitter 16, and the primary side water inlet 12 is fixedly provided with a first pressure transmitter 17 and a first flow transmitter 18.
The primary side and the secondary side in the primary side waterway and the secondary side waterway refer to a heat source to heat exchange station and a heat exchange station to user side respectively.
The primary water inlet 12 is connected with a heat source through a pipeline, the heat source is working water of a power plant, high-temperature steam is needed in the working process of the power plant, the steam is condensed into high-temperature hot water after passing through a generator, the high-temperature hot water enters the heat exchange tank 11 from the primary water inlet 12, and the high-temperature hot water is discharged from the primary water outlet 13 to return to the power plant after heat exchange. The heat exchange temperature transmitter 16 fixedly installed on the primary side water inlet 12 and the primary side water outlet 13 is used for detecting the primary side water inlet temperature and the primary side water outlet temperature, and the first pressure transmitter 17 and the first flow transmitter 18 fixedly installed on the primary side water inlet 12 can detect the primary side water inlet flow rate and the primary side water inlet pressure.
The primary side water diversion pneumatic regulating valve 19 is fixedly arranged at the primary side water inlet 12 through a three-way pipeline and is positioned between the first pressure transmitter 17 and the heat exchange temperature transmitter 16, the water outlet of the primary side water diversion pneumatic regulating valve 19 is connected with the heat exchange tank 11 through a pipeline, and the first pressure transmitter 17 and the first flow transmitter 18 are fixedly arranged at the tail end of the pipeline.
The opening and closing degree of the primary water diversion pneumatic regulating valve 19 is controlled, so that the water diversion flow of the primary water supply can be controlled, and the first pressure transmitter 17 and the first flow transmitter 18 which are fixedly arranged at the tail end of the pipeline of the water outlet of the primary water diversion pneumatic regulating valve 19 are used for detecting the water outlet flow and the water outlet pressure of the primary water diversion pneumatic regulating valve 19.
The secondary side of the heat exchange tank 11 is welded with a secondary side water inlet 14 and a secondary side water outlet 15, the secondary side water inlet 14 and the secondary side water outlet 15 are fixedly provided with a heat exchange temperature transmitter 16, and the secondary side water inlet 14 is fixedly connected with a secondary side water return pipe 21.
The backwater of the user side is secondary backwater, the secondary backwater enters the heat exchange tank 11 from the secondary water inlet 14, and is discharged from the secondary water outlet 15 after heat exchange in the heat exchange tank 11. The heat exchange temperature transmitter 16 at the secondary side water inlet 14 and the secondary side water outlet 15 can detect the secondary side backwater temperature and the water outlet temperature after heat exchange.
The secondary side water inlet assembly 2, the secondary side water inlet assembly 2 comprises a secondary side water return pipe 21, the secondary side water return pipe 21 is connected with the heat exchange tank 11, a second water diversion air-flow regulating valve 26 is fixedly arranged at the joint of the secondary side water return pipe 21 and the heat exchange tank 11, and the second water diversion air-flow regulating valve 26 can prevent water in the secondary side water return pipe 21 from entering the heat exchange tank 11. The water outlet of the second split water pneumatic adjusting valve 26 is fixedly connected with a heat mixing tank 31 through a pipeline, and a second pressure transmitter 24 and a second flow transmitter 25 are fixedly arranged at the tail end of the pipeline.
The opening and closing degree of the second water diversion pneumatic adjusting valve 26 is controlled, so that the water diversion flow of the secondary side backwater can be controlled, and the second pressure transmitter 24 and the second flow transmitter 25 at the tail end of the pipeline connected with the water outlet of the second water diversion pneumatic adjusting valve 26 can detect the water outlet flow and the water outlet pressure of the water outlet of the second water diversion pneumatic adjusting valve 26.
The middle part of the secondary side water return pipe 21 is fixedly connected with water supplementing equipment, and a second pressure transmitter 24 and a second flow transmitter 25 are fixedly arranged on the secondary side water return pipe 21 and positioned on two sides of the water supplementing equipment.
The second pressure transmitters 24 and the second flow transmitters 25 on the secondary side return pipe 21 and at two sides of the water supplementing device are respectively used for detecting the flow and the return pressure of secondary side return water before and after water supplementing.
The water supplementing device comprises a water supplementing tank 22, and the water outlet of the water supplementing tank 22 is fixedly connected with the secondary side water return pipe 21 through a water supplementing pump 23.
The water supplementing tank 22 is used for storing softened tap water, and when the second pressure transmitter 24 and the second flow transmitter 25 which are arranged on the secondary side water return pipe 21 and are positioned at the front side of the water supplementing device detect that the secondary side water return pressure and the water return flow are too low, the water in the water supplementing tank 22 can be pumped out through the water supplementing pump 23 to provide additional water for the secondary side water return pipe 21.
Further comprises:
the heat mixing assembly 3, the heat mixing assembly 3 comprises a heat mixing tank 31, the heat mixing tank 31 is fixedly connected with a primary side water diversion pneumatic control valve 19, a heat exchange tank 11 and a second water diversion pneumatic control valve 26, and secondary side backwater subjected to heat exchange, primary side hot water and secondary side backwater not subjected to heat exchange can be mixed in the heat mixing tank 31. The top of the heat mixing tank 31 is welded with a secondary side hot water inlet 32, a secondary side water diversion inlet 33 and a primary side water diversion inlet 34, and the secondary side hot water inlet 32, the secondary side water diversion inlet 33 and the primary side water diversion inlet 34 are fixedly provided with a mixing temperature transmitter 37.
The heat exchange secondary side backwater enters the heat mixing tank 31 from the secondary side hot water inlet 32, the primary side hot water enters the heat mixing tank 31 from the primary side water diversion inlet 34, and the non-heat exchange secondary side backwater enters the heat mixing tank 31 from the secondary side water diversion inlet 33. The mixed temperature transmitter 37 fixedly installed at the secondary side hot water inlet 32, the secondary side water diversion inlet 33 and the primary side water diversion inlet 34 is used for detecting the temperatures of the secondary side backwater subjected to heat exchange, the primary side hot water and the secondary side backwater not subjected to heat exchange respectively.
A water delivery pump 38 is fixedly arranged at the bottom of the front side of the heat mixing tank 31, a water delivery pressure transmitter 39 is fixedly arranged between the water delivery pump 38 and the heat mixing tank 31, and a mixed temperature transmitter 37 is fixedly arranged at the bottom end of the heat mixing tank 31.
The water pump 38 is used for pumping the mixed water to a user, the water pressure transmitter 39 is used for detecting the water pressure, and the mixed temperature transmitter 37 fixedly arranged at the bottom end of the heat mixing tank 31 is used for detecting the temperature of the mixed liquid.
The stirring motor 36 is fixedly arranged at the top end of the heat mixing tank 31, the rotating shaft of the stirring motor 36 penetrates through the top end of the heat mixing tank 31 and extends into the heat mixing tank 31, and the stirring roller 35 is fixedly arranged in the heat mixing tank 31 through the shaft coupling through the rotating shaft of the stirring motor 36.
After the stirring motor 36 is electrified and started, the stirring roller 35 can be driven to rotate, so that the mixed liquid is stirred, and the temperature of the mixed liquid is fast and uniform.
The control assembly 4, the control assembly 4 includes an indoor temperature and humidity sensor 42 and an outdoor temperature transmitter 43, and data detected by the indoor temperature and humidity sensor 42 and the outdoor temperature transmitter 43 are transmitted to a receiving antenna 44 in a wireless transmission manner.
An indoor temperature and humidity sensor 42 is installed in a user's home for detecting indoor temperature and humidity at the user side, and an outdoor temperature transmitter 43 is installed near the heat exchange station for detecting ambient temperature. The limit numbers detected by the indoor temperature and humidity sensor 42 and the outdoor temperature transmitter 43 are transmitted to the receiving antenna 44 in the form of a 4G signal.
The control assembly 4 further comprises a control box 41, a receiving antenna 44 is fixedly arranged at the top of the control box 41, an audible and visual alarm device 45 is fixedly arranged at the top of the control box 41, and a control knob 46 is rotatably arranged on the front side surface of the control box 41.
The control box 41 is connected with the receiving antenna 44 through a wire, and simultaneously is connected with each transmitter and the pneumatic regulating valve through wires, and is used for receiving signals of each transmitter and controlling the opening and closing degree of the pneumatic regulating valve after processing. The control box 41 may employ a well-known PLC control device. After the signals transmitted by the transmitters are transmitted to the control box 41, if the condition of over-voltage and under-voltage is detected, the control box 41 can control the audible and visual alarm device 45 to send out audible and visual alarm. The control knob 46 is connected with the control box 41 in a wired manner, and the control knob 46 is divided into six gears from 0 to 5.
The control method of the constant temperature control system of the heating and ventilation equipment comprises the following steps:
step one: the backwater treatment, the secondary side backwater of the user side passes through and returns to the heat exchange station through the secondary side backwater pipe 21, and before heat exchange, the water storage of the water supplementing tank 22 is pumped into the secondary side backwater pipe 21 through the water supplementing pump 23, so that the backwater pressure in the secondary side backwater pipe 21 reaches the standard value;
step two: the heat exchange is carried out, high-temperature hot water conveyed from a heat source enters the heat exchange tank 11 from the primary side water inlet 12 through a pipeline, secondary side backwater enters the heat exchange tank 11 from the secondary side water inlet 14, heat exchange is carried out between the high-temperature hot water and the secondary side backwater in the heat exchange tank 11, then the primary side hot water after heat exchange is discharged from the primary side water outlet 13, the hot water returns to the heat source through the pipeline, and heated secondary side backwater is discharged from the secondary side water outlet 15;
step three: temperature detection, namely detecting the water supply temperature of the primary side, the water return temperature of the secondary side after water supplementing and the water discharge temperature of the secondary side water outlet 15;
step four: mixing heat, namely, returning water discharged from the secondary side water outlet 15 after heat exchange enters the heat mixing tank 31 through the secondary side hot water inlet 32, and then primary side hot water or secondary side low-temperature cold water is respectively injected through the secondary side water diversion inlet 33 and the primary side water diversion inlet 34, and water from three sources is mixed with each other through stirring;
step five: the temperature is controlled, and the amount of primary side high-temperature water or secondary side low-temperature cold water is controlled by controlling the opening and closing degree of the primary side water diversion pneumatic regulating valve 19 and the second water diversion pneumatic regulating valve 26, so that the temperature of mixed water is controlled;
step six: a water supply for pumping the mixed water to the user through the water feed pump 38;
in the third step, the enthalpy data is calculated according to the temperature detection data, and the calculated enthalpy data is mapped to a high-dimensional spaceIn, and in the high-dimensional space->Middle construction temperature stability judgment function->：
；
Converting the above into an objective function：
；
Introducing relaxation variablesThe method comprises the following steps of:
；
introducing kernel functionsObtaining a predictive model->：
；
Wherein,enthalpy change data representing input, ++>Representing the total number of enthalpy change data, +.>And->Transposition of a low-dimensional space and transposition of a high-dimensional space, respectively,/->Representation->Transpose of->Representing a non-linear mapping->Represents regression threshold value->Represents penalty factors->、/>Representing sensitive variables +.>Representing support vector +_>Conjugate vector representing support vector, ++>Representing +.>Gao Weihan data, ->True judgment value representing test enthalpy change data, < ->Regression prediction judgment value representing test enthalpy change data, < >>Representing the relaxation vector>A conjugate vector representing the relaxation vector;
and dividing a stability threshold and a corresponding grade according to the temperature stability judging function, and judging the current temperature stability grade based on the stability threshold.
When the equipment is used by an operator, the primary side water inlet 12 is connected with a heat source through a pipeline, the heat source is working water of a power plant, high-temperature steam is needed in the working process of the power plant, after the steam passes through a generator, the steam is condensed into high-temperature hot water, the high-temperature hot water enters the heat exchange tank 11 from the primary side water inlet 12, meanwhile, backwater at a user side is secondary side backwater, the secondary side backwater enters the heat exchange tank 11 from the secondary side water inlet 14, heat exchange is completed in the heat exchange tank 11 by the secondary side low-temperature backwater of the primary side high-temperature hot water, after heat exchange, the primary side low-temperature water is discharged from the primary side water outlet 13 to the power plant, and the secondary side high-temperature water is discharged from the secondary side water outlet 15. The heat exchange temperature transmitter 16 detects the primary side water inlet temperature, the primary side water outlet temperature, the secondary side water return temperature and the water outlet temperature after heat exchange. The first pressure transmitter 17 and the first flow transmitter 18 fixedly installed at the primary side water inlet 12 are capable of detecting the primary side water inlet flow rate and the primary side water inlet pressure.
After the secondary side high-temperature water is discharged from the secondary side water outlet 15, the secondary side high-temperature water enters the heat mixing tank 31 through the secondary side hot water inlet 32, the mixed temperature transmitter 37 of the secondary side hot water inlet 32 detects the secondary side backwater temperature after heat exchange, meanwhile, the indoor temperature and humidity sensor 42 and the outdoor temperature transmitter 43 detect the indoor temperature and humidity of the user side and the environment temperature, and the indoor temperature and humidity of the user side are transmitted to the control box 41 in a wireless transmission mode, the control box 41 determines the water discharging temperature of the heat mixing tank 31 according to the environment temperature and the indoor temperature and humidity of the user side, if the secondary side high-temperature water temperature exceeds the required temperature, the opening and closing degree of the second water splitting pneumatic regulating valve 26 is controlled to be improved, the low-temperature backwater flow is increased, the mixed water temperature is reduced, and if the secondary side high-temperature water temperature is lower than the required temperature, the opening and closing degree of the primary side water splitting pneumatic regulating valve 19 is controlled to be improved, the mixed water temperature is increased. Detecting the temperature of the mixed liquid by a mixed temperature transmitter 37 fixedly installed at the bottom end of the heat mixing tank 31, calculating enthalpy data thereof based on the temperature detection data, and mapping the calculated enthalpy data to a high-dimensional spaceIn, and in the high-dimensional space->Middle construction temperature stability judgment function->：
；
Converting the above into an objective function：
；
Introducing relaxation variablesThe method comprises the following steps of:
；
introducing kernel functionsObtaining a predictive model->：
；
Wherein,enthalpy change data representing input, ++>Representing the total number of enthalpy change data, +.>And->Transposition of a low-dimensional space and transposition of a high-dimensional space, respectively,/->Representation->Transpose of->Representing a non-linear mapping->Represents regression threshold value->Represents penalty factors->、 />Representing sensitive variables +.>Representing support vector +_>Conjugate vector representing support vector, ++>Representing +.>Gao Weihan data, ->True judgment value representing test enthalpy change data, < ->Regression prediction judgment value representing test enthalpy change data, < >>Representing the relaxation vector>A conjugate vector representing the relaxation vector;
and dividing a stability threshold and a corresponding grade according to the temperature stability judging function, and judging the current temperature stability grade based on the stability threshold, thereby realizing real-time adjustment.
The water flowing back from the user end is collected in the secondary side water return pipe 21, and when the second pressure transmitter 24 and the second flow transmitter 25 which are arranged on the secondary side water return pipe 21 and positioned on the front side of the water supplementing device detect that the secondary side water return pressure and the water return flow are too low, the water in the water supplementing tank 22 can be pumped out through the water supplementing pump 23, so that additional water is provided for the secondary side water return pipe 21.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present invention, and are not intended to limit the invention, and that various changes and modifications may be made therein without departing from the spirit and scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. A control method of a constant temperature control system of heating and ventilation equipment, which is based on the constant temperature control system of the heating and ventilation equipment, and is characterized by comprising the following steps:
step one: the water return treatment, the secondary side water return of the user side passes through, returns to the heat exchange station through the secondary side water return pipe (21), and pumps the water stored in the water supplementing tank (22) into the secondary side water return pipe (21) through the water supplementing pump (23) before heat exchange, so that the water return pressure in the secondary side water return pipe (21) reaches the standard value;
step two: the heat exchange is carried out, high-temperature hot water conveyed from a heat source enters the heat exchange tank (11) from the primary side water inlet (12) through a pipeline, secondary side backwater enters the heat exchange tank (11) from the secondary side water inlet (14), heat exchange occurs in the heat exchange tank (11), then the primary side hot water after heat exchange is discharged from the primary side water outlet (13), the hot water returns to the heat source through the pipeline, and heated secondary side backwater is discharged from the secondary side water outlet (15);
step three: temperature detection, namely detecting the water discharge temperature of primary side water supply, secondary side backwater after water supplementing and a secondary side water outlet (15);
step four: mixing heat, namely, returning water discharged from a secondary side water outlet (15) after heat exchange enters a heat mixing tank (31) through a secondary side hot water inlet (32), then primary side hot water or secondary side low-temperature cold water is respectively injected through a secondary side water diversion inlet (33) and a primary side water diversion inlet (34), and water from three sources is mixed with each other through stirring;
step five: the temperature is controlled, and the opening and closing degree of the primary side water diversion pneumatic regulating valve (19) and the second water diversion pneumatic regulating valve (26) is controlled, so that the quantity of primary side high-temperature hot water or secondary side low-temperature cold water is controlled, and the temperature of mixed water is controlled;
step six: a water supply for pumping the mixed water to a user through a water feed pump (38);
in the third step, the enthalpy data is calculated according to the temperature detection data, the calculated enthalpy data is mapped into a high-dimensional space phi, and a temperature stability judging function f (X) is constructed in the high-dimensional space phi:
the above equation is converted into an objective function g:
introduction of the relaxation variable beta i The method comprises the following steps of:
introducing a kernel function k (X, X i )＝X T X i Obtaining a prediction model F (X):
wherein X represents input enthalpy change data, n represents total enthalpy change data, phi and phi T Transposition of a low-dimensional space and transposition of a high-dimensional space, X, respectively T Represents the transpose of X and,represents nonlinear mapping, delta represents regression threshold, c represents penalty factor, l and r represent sensitive variable, alpha i Representing support vector +_>Representing the conjugate vector of the support vector, X i Representing the ith Gao Weihan variant data, y, in high-dimensional space i Representing the true judgment value of the test enthalpy change data, f (X) i ) Regression prediction judgment value, beta, representing test enthalpy change data i Representing the relaxation vector>A conjugate vector representing the relaxation vector;
dividing a stability threshold and a corresponding grade according to a temperature stability judging function, and judging the current temperature stability grade based on the stability threshold;
the constant temperature control system of the heating and ventilation equipment comprises:
the heat exchange assembly (1), the heat exchange assembly (1) comprises a heat exchange tank (11), the heat exchange tank (11) is connected with a primary side waterway and a secondary side waterway, the primary side waterway and the secondary side waterway are subjected to heat exchange in the heat exchange tank (11), and a primary side water diversion pneumatic regulating valve (19) is fixedly arranged on the primary side of the heat exchange tank (11) and can separate out the primary side hot water without entering the heat exchange tank (11);
the secondary side water inlet assembly (2), the secondary side water inlet assembly (2) comprises a secondary side water return pipe (21), the secondary side water return pipe (21) is connected with the heat exchange tank (11), a second water diversion air-flow regulating valve (26) is fixedly arranged at the joint of the secondary side water return pipe (21) and the heat exchange tank, and the second water diversion air-flow regulating valve (26) can prevent water in the secondary side water return pipe (21) from entering the heat exchange tank (11);
the heat mixing assembly (3), the heat mixing assembly (3) comprises a heat mixing tank (31), the heat mixing tank (31) is fixedly connected with a primary side water diversion pneumatic regulating valve (19), a heat exchange tank (11) and a second water diversion pneumatic regulating valve (26), and secondary side backwater subjected to heat exchange, primary side hot water and secondary side backwater not subjected to heat exchange can be mixed in the heat mixing tank (31);
the control assembly (4) comprises an indoor temperature and humidity sensor (42) and an outdoor temperature transmitter (43), and data detected by the indoor temperature and humidity sensor (42) and the outdoor temperature transmitter (43) are transmitted to the receiving antenna (44) in a wireless transmission mode;
a primary side water inlet (12) and a primary side water outlet (13) are fixedly arranged on the primary side of the heat exchange tank (11), a heat exchange temperature transmitter (16) is fixedly arranged on the primary side water inlet (12) and the primary side water outlet (13), and a first pressure transmitter (17) and a first flow transmitter (18) are fixedly arranged at the primary side water inlet (12);
the primary side water diversion pneumatic regulating valve (19) is fixedly arranged at the primary side water inlet (12) and is positioned between the first pressure transmitter (17) and the heat exchange temperature transmitter (16), the water outlet of the primary side water diversion pneumatic regulating valve (19) is connected with the heat exchange tank (11) through a pipeline, and the first pressure transmitter (17) and the first flow transmitter (18) are fixedly arranged at the tail end of the pipeline;
the top of the heat mixing tank (31) is fixedly provided with a secondary side hot water inlet (32), a secondary side water diversion inlet (33) and a primary side water diversion inlet (34), and the secondary side hot water inlet (32), the secondary side water diversion inlet (33) and the primary side water diversion inlet (34) are fixedly provided with a mixing temperature transmitter (37).
2. A control method of a constant temperature control system of a heating and ventilation apparatus as claimed in claim 1, wherein: the heat exchange tank is characterized in that a secondary side water inlet (14) and a secondary side water outlet (15) are fixedly arranged on the secondary side of the heat exchange tank (11), a heat exchange temperature transmitter (16) is fixedly arranged on the secondary side water inlet (14) and the secondary side water outlet (15), and the secondary side water inlet (14) is fixedly connected with a secondary side water return pipe (21).
3. A control method of a constant temperature control system of a heating and ventilation apparatus as claimed in claim 2, wherein: the water outlet of the second water diversion and gas regulating valve (26) is fixedly connected with the heat mixing tank (31) through a pipeline, and a second pressure transmitter (24) and a second flow transmitter (25) are fixedly arranged at the tail end of the pipeline.
4. A control method of a constant temperature control system of a heating and ventilation apparatus as claimed in claim 3, wherein: the middle part of the secondary side water return pipe (21) is fixedly connected with water supplementing equipment, and a second pressure transmitter (24) and a second flow transmitter (25) are fixedly arranged on the secondary side water return pipe (21) and positioned on two sides of the water supplementing equipment.
5. A control method of a constant temperature control system of a heating and ventilation apparatus as claimed in claim 4, wherein: the water supplementing device comprises a water supplementing tank (22), and a water outlet of the water supplementing tank (22) is fixedly connected with the secondary side water return pipe (21) through a water supplementing pump (23).
6. A control method of a constant temperature control system of a heating and ventilation apparatus as claimed in claim 5, wherein: the water supply pump (38) is fixedly installed at the bottom of the front side of the heat mixing tank (31), the water supply pressure transmitter (39) is fixedly installed between the water supply pump (38) and the heat mixing tank (31), and the mixing temperature transmitter (37) is fixedly installed at the bottom end of the heat mixing tank (31).
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH672198A5 (en) * | 1986-01-03 | 1989-10-31 | Vaillant Gmbh | |
| CN201255460Y (en) * | 2008-05-13 | 2009-06-10 | 舒保中 | Constant temperature water mixing retention control energy-conserving heating device |
| CN209263150U (en) * | 2019-01-02 | 2019-08-16 | 杨树明 | A kind of board-like heat-exchanger system of energy conservation |
| CN110701660A (en) * | 2019-10-08 | 2020-01-17 | 瑞纳智能设备股份有限公司 | Secondary side intelligent type hybrid energy heat exchange unit and control method |
| CN213066263U (en) * | 2020-07-23 | 2021-04-27 | 烟台厚德瑞华节能科技有限公司 | Efficient and energy-saving distributed water mixing direct supply system for heating pipe network |
| CN113310107A (en) * | 2021-05-17 | 2021-08-27 | 北京市热力工程设计有限责任公司 | Secondary side temperature control framework and method for heating system of heat exchange station |
| CN216244519U (en) * | 2021-10-26 | 2022-04-08 | 毛小茹 | Climate compensation device for heating system |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101379766B1 (en) * | 2012-05-03 | 2014-04-01 | 주식회사 경동나비엔 | A boiler with improved heating efficiency which is capable of using heating and hot water simultaneously |
| CA3107539A1 (en) * | 2021-01-29 | 2022-07-29 | Denering Berrio | Hvac hydronic system with split buffer tank for zero-mixing system operation |
-
2023
- 2023-11-03 CN CN202311450479.4A patent/CN117167804B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH672198A5 (en) * | 1986-01-03 | 1989-10-31 | Vaillant Gmbh | |
| CN201255460Y (en) * | 2008-05-13 | 2009-06-10 | 舒保中 | Constant temperature water mixing retention control energy-conserving heating device |
| CN209263150U (en) * | 2019-01-02 | 2019-08-16 | 杨树明 | A kind of board-like heat-exchanger system of energy conservation |
| CN110701660A (en) * | 2019-10-08 | 2020-01-17 | 瑞纳智能设备股份有限公司 | Secondary side intelligent type hybrid energy heat exchange unit and control method |
| CN213066263U (en) * | 2020-07-23 | 2021-04-27 | 烟台厚德瑞华节能科技有限公司 | Efficient and energy-saving distributed water mixing direct supply system for heating pipe network |
| CN113310107A (en) * | 2021-05-17 | 2021-08-27 | 北京市热力工程设计有限责任公司 | Secondary side temperature control framework and method for heating system of heat exchange station |
| CN216244519U (en) * | 2021-10-26 | 2022-04-08 | 毛小茹 | Climate compensation device for heating system |
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