CN111121149B - Intelligent control system of gas module unit - Google Patents
Intelligent control system of gas module unit Download PDFInfo
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- CN111121149B CN111121149B CN201811276869.3A CN201811276869A CN111121149B CN 111121149 B CN111121149 B CN 111121149B CN 201811276869 A CN201811276869 A CN 201811276869A CN 111121149 B CN111121149 B CN 111121149B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
Abstract
The invention provides an intelligent control system of a gas module unit. The intelligent control system of the gas module unit takes a controller as a carrier to control a heating/hot water supply system consisting of a plurality of gas module furnaces, a water tank, a heat exchanger, a circulating pump, a pipe network and other equipment, and an operator presets an inertia temperature difference b of each gas module furnace in the intelligent control system of the gas module unit through the controller1、b2、b3……bnTarget temperature d, heat preservation temperature difference e; the intelligent control system of the gas module set collects the running time a of each gas module furnace1、a2、a3……anAnd c, the temperature of the water tank, and controlling. The intelligent control system of the gas module unit solves the technical problems that in the prior art, a heat supply unit consisting of a plurality of gas module furnaces is short in service life of the whole unit, or high in energy consumption caused by frequent start and stop.
Description
Technical Field
The invention relates to the field of heat supply pipe network control systems, in particular to an intelligent control system of a gas module furnace.
Background
The gas module heat supply furnace is a heat supply device between a household gas water heater and a large boiler, the comprehensive heat exchange efficiency of the unit is higher than that of the large boiler, the operation mode is flexible and changeable, a professional boiler room is not needed, the normal pressure device does not need to be forcibly inspected by functional departments, the intelligent operation does not need to be certified by a fireman, the advantages of energy conservation, emission reduction and the like are obvious, and the gas and coal fired boilers of various models can be replaced by the unit combination. The system is widely applied to central air conditioning heating and central hot water supply systems.
Because the power of a single gas module furnace is generally between 50 and 100KW, in order to solve the problem of power required by medium and large heat supply places, a plurality of gas module furnaces are required to be connected in parallel to form a unit to operate. Current solutions include the following:
1. step temperature control method: the starting temperature of each gas module furnace in the unit is different, and the stopping temperature is consistent.
The control method is characterized in that a plurality of units are fixed to operate in the heat preservation stage, the module furnaces run for a long time and die, and the rest module furnaces only participate in the operation in a short time at the top peak, so that the whole service life of the units is not facilitated.
2. A main module control method: all modules enter and exit simultaneously.
All the module furnaces run equally, so that the problem that a certain module furnace runs for a long time and is dead is solved, and the whole service life of the unit is prolonged. Meanwhile, the energy consumption problem is caused, the unit is integrally started when the load is small or the load fluctuates a little, and the basic consumption of starting and stopping is high.
Disclosure of Invention
In order to solve the technical problems that the whole service life of a heat supply unit formed by a plurality of gas module furnaces is short or the energy consumption is high due to frequent start and stop in the prior art, the invention provides an intelligent control system of the gas module furnaces, which solves the problems.
An intelligent control system of gas module set is prepared as using controller as carrier to control heat supply/hot water supply system formed by multiple gas module furnaces, water tank, heat exchanger, circulating pump and pipe network, presetting inertial temperature difference b of each gas module furnace in intelligent control system of gas module set by operator through controller1、b2、b3……bnTarget temperature d, heat preservation temperature difference e, e is greater than b1+b2+b3……+bn；
The intelligent control system of the gas module set collects the running time a of each gas module furnace1、a2、a3……anThe temperature c of the water tank and the following control is carried out:
c and d are compared;
when c is smaller than d-e, controlling all the gas module furnaces to start;
screening out a1To anMaximum value of (a)max，amaxCorresponding inertial temperature difference of bmaxWhen c is equal to d-b1-b2-b3-……-bn+bmaxWhen is turned off, amaxThe corresponding gas module furnace;
screening out a1To anRemoving amaxExternal maximum value a'max，a'maxCorresponding inertial temperature difference of b'maxWhen c is equal to d-b1-b2-b3-……-bn+bmax+b'maxWhile, close a'maxThe corresponding gas module furnace;
and so on until only a remains1To anMinimum value of amin，aminCorresponding inertial temperature difference of bminWhen c equals d, turn off aminThe corresponding gas module furnace;
c is gradually reduced along with natural cooling and cooling caused by water;
screening out a1To anMiddle new minimum value a'min，a'minCorresponding inertial temperature difference of b'minWhen c is equal to d-b'minThen start a'minThe corresponding gas module furnace;
if c rises, a 'is closed when c is equal to d'minThe corresponding gas module furnace;
if c is still reduced, screening a1To anRemoving aminSecond smallest value of a "min，a”minCorresponding inertial temperature difference of b'minWhen c is equal to d-b'min-b”minWhen, start a "minThe corresponding gas module furnace;
if c rises, then when c is equal to d-b'minClosing a'minThe corresponding gas module furnace is closed to a 'when c is equal to d'minThe corresponding gas module furnace;
if c continues to decline, the process is analogized, and a is screened out1To anAnd the third small value, and starting the corresponding gas module furnace.
In a preferred embodiment of the intelligent control system for the gas module furnace provided by the present invention, the operating times a1, a2, a3 … … an of the gas module furnace are in hours, the set values of the target temperature d and the holding temperature difference e are cyclically changed in a cycle of day, and the whole cycle of a single day is cyclically changed in a cycle of week.
In a preferred embodiment of the intelligent control system for the gas module furnaces, when all the gas module furnaces are controlled to be started, the gas module furnaces are started sequentially at certain time intervals according to the sequence from short to long of the operation time of the gas module furnaces.
In a preferred embodiment of the intelligent control system for the gas module furnace provided by the invention, the gas module furnace is provided with a self-checking system;
before the intelligent control system of the gas module unit controls the gas module furnace to be started, the self-checking system is controlled to be started, and an operation result is sent back to the controller;
the intelligent control system of the gas module unit analyzes the operation result:
if no fault is displayed in the result, controlling the gas module furnace to start;
and if the result shows that the fault exists, giving up control over the starting of the gas module furnace.
In a preferred embodiment of the intelligent control system for the gas module furnace provided by the invention, the intelligent control of the gas module unit also acquires the outlet water temperature of each gas module furnace and analyzes the temperature data;
and when the water outlet temperature of one gas module furnace is too high or the temperature is raised too fast, controlling the corresponding gas module furnace to be closed.
In a preferred embodiment of the intelligent control system for the gas module furnace provided by the present invention, when the operation result of the self-checking system of a certain gas module furnace shows that there is a fault, and when it is detected that the outlet water temperature of a certain gas module furnace is too high, the fault gas module furnace is shielded in addition to being controlled to be closed on site, and the control rule of the intelligent control system for the gas module furnace set is changed:
when all the gas module furnaces are controlled to be started, fault machines are removed;
screening out a1To anWhen the maximum value is in the range, the fault machine is removed;
screening out a1To anAnd when the minimum value is in the range, the fault machine is removed.
In a preferred embodiment of the intelligent control system for the gas module furnace provided by the invention, the controller is further connected with one or more warning devices, and the intelligent control system for the gas module furnace unit starts the warning devices and sends warning information while shielding the failed gas module furnace.
In the invention provided withIn a preferred embodiment of the intelligent control system of the gas module furnace, the intelligent control system of the gas module unit is also preset with a heat preservation temperature difference e, wherein e is greater than b1+b2+b3……+bn；
And when c continuously decreases until all the units are started, the temperature can not be maintained, namely c is less than d-e, the warning equipment is also started to send warning information.
In a preferred embodiment of the intelligent control system for gas module furnaces provided by the present invention, the intelligent control system for gas module units may also actively set a shielding rule to shield one or more of the gas module furnaces.
In a preferred embodiment of the intelligent control system for the gas module furnace provided by the invention, the controller is provided with the authorities of inertia temperature difference b, target temperature d and heat preservation temperature difference e, the authority for shielding one or more gas module furnaces and the functional authorities of other functions are actively set, and password protection divided into different authority levels is provided.
Compared with the prior art, the intelligent control system for the gas module furnace can independently control each module furnace in the unit, so that the adjustable range of power is wide, the operation mode is flexible and changeable, and the energy-saving effect is good.
At the same time, the ability to control individually also enables a first-come, first-stop rotation mechanism to be implemented in operation. When the module furnaces need to be put into practical use, the accumulated running time is started preferentially to be short according to the running time of each module furnace, so that all the module furnaces run in a balanced manner, the dead accumulation is prevented, and the service life of the whole unit is prolonged.
And the system is also provided with single-day operation time period circulation and week operation time period circulation, so that the actual use condition can be fitted to the maximum extent, and the energy consumption is further reduced.
Be equipped with special warning equipment, can demonstrate fault information with multiple different show modes, not only great convenience of customers accurately judges the trouble, reduces maintainer's level requirement, and convenient timely response moreover solves because of the drawback that system's unmanned on duty trouble maintenance reaction lags behind.
By using a multi-level authority password system, irrelevant personnel are prevented from modifying the operation parameters of the machine randomly, and meanwhile, the influence of the change of the personnel at each level on the operation of the machine is prevented.
Drawings
FIG. 1 is a schematic structural diagram of a hot water supply circulation heating system provided with an intelligent control system of a gas module furnace provided by the invention;
fig. 2 is a schematic structural diagram of a controller provided with the intelligent control system of the gas module furnace provided by the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Fig. 1 is a schematic structural diagram of a hot water supply circulation heating system 1 equipped with an intelligent control system of a gas module furnace according to the present invention.
A set of circulation heating system 1 for supplying hot water to a medium-sized office place comprises a gas module unit 11 consisting of twelve gas module furnaces, a water tank 12, a first circulating pump 14, a second circulating pump 15, a pressurizing pump 16, a water supply pipe 17, a water replenishing pipe 18 and a water return pipe 19.
The gas module furnace is provided with a self-checking system, a water outlet temperature sensor and a relay for controlling starting and stopping. The water tank 12 is provided with a water tank temperature sensor. The first circulating pump 14 and the second circulating pump 15 are respectively provided with a driver for controlling starting and stopping.
Please refer to fig. 2, which is a schematic structural diagram of a controller 10 installed with the intelligent control system of the gas module furnace according to the present invention.
The controller 10 is provided with interfaces J1-J12 which are respectively connected with twelve relays. And the interfaces G1 to G12 are respectively connected with the twelve self-checking systems. Interfaces W1-W12 are respectively connected with the twelve water outlet temperature sensors. Interfaces B1 and B2 are connected to the two drivers, respectively. And the interface T is connected with the water tank temperature sensor. The interface a is connected to the display screen 22 and the router 23 through the signal conversion device 21.
The intelligent control system of the gas module furnace is installed in the controller 10. The intelligent control system of the gas module furnace acquires a self-checking result of the gas module furnace, the water outlet temperature f of the gas module furnace and the water temperature c in the water tank 12, and obtains the running time a of the gas module furnace by calculating the starting and stopping time of the relay.
The intelligent control system of the gas module furnace controls the opening and closing of the gas module furnace, the first circulating pump and the second circulating pump by means of the data, the set target heating temperature d, the set heat preservation temperature difference e, the set heat preservation time, the set circulation period and the set inertia temperature difference b.
Wherein, any one of a first-level to a fourth-level authority password is needed for setting a target heating temperature d, a heat preservation temperature difference e, heat preservation time and a cycle period of the heat preservation time;
setting inertia temperature difference b, and setting the number of the gas module furnaces to be started, wherein any one of two-level to four-level authority passwords is required;
setting other detail parameters to require any one of three-level and four-level authority passwords;
the reset of the whole system needs four levels of authority codes.
The inertial temperature difference b can be understood as the thermal load fluctuation amplitude. The holding temperature difference e can be understood as the allowable amplitude of the downward fluctuation of the target temperature.
Specifically, the operation of the intelligent control system of the gas module furnace comprises the following steps:
s01: the controller 10 sets a target heating temperature d to be 50 ℃, the heat preservation temperature difference e to be 2 ℃, and the target heating temperature is maintained at 08: 00-18: 00 every monday to friday. The gas module furnaces are all the same type of equipment, and the inertia temperature difference b is set to be 0.2 ℃.
The current water pressure is less, gas module unit 11 only needs six machines can satisfy the requirement, shields the operation of six machines in addition. The running time of each gas module furnace is different, and is represented as a1>a2>a3>……>a6。
S02: and when the ratio is 08:00, starting the system, starting the first circulating pump, and driving the water flow in the pipe network to circulate. Meanwhile, the water temperature c in the water tank is measured to be 26 ℃.
c is far less than 50 ℃, and the intelligent control system of the gas module furnace controls six gas module furnaces to start from a6Corresponding said gas module furnace to1The corresponding gas modules are sequentially started at intervals of 10 s.
S03: c continuously rises under the heating of the gas module furnace, and when c is 49 ℃, the intelligent control system of the gas module furnace controls a1Stopping the corresponding gas module furnace;
c is 49.2 deg.C, a2Stopping the corresponding gas module furnace;
c is 49.4 deg.C, a3Stopping the corresponding gas module furnace;
c is 49.6 deg.C, a4Stopping the corresponding gas module furnace;
c is 49.8 deg.C, a5Stopping the corresponding gas module furnace;
c at 50 deg.C, a6Stopping the corresponding gas module furnace;
under the effect of excess heat, c continues to rise to slightly over 50 ℃.
S04: as the user used water and cooled naturally, c decreased to 49.8 ℃. The operating time of each gas module furnace is still kept as a1>a2>a3>……>a6。
The intelligent control system of the gas module furnace controls a6And starting the corresponding gas module furnace, and controlling the gas module furnace to be closed after the temperature of c is increased to 50 ℃.
Under the action of the residual heat, c continues to rise, but is immediately pulled down by water.
S05: at 12:00, the water consumption is increased, and a is reduced to 49.8 DEG C6The corresponding gas module furnace was started, but c was still reduced to 49.6 ℃. At the same time, the running time of each gas module furnace is stillIs maintained as a1>a2>a3>……>a6。
The intelligent control system of the gas module furnace controls a5Starting the corresponding gas module furnace, and a after c is raised to 49.8 DEG C5And closing the corresponding gas module furnace.
c after increasing to 50 deg.C, a6And closing the corresponding gas module furnace.
S06: and when the flow rate is 13:00, the first circulating pump is closed, and the second circulating pump is started.
S07: repeat S04, run to 18:00, and shut down the system.
S08: repeating the steps S02-S07 every monday to friday, and the system is not started on saturday and sunday.
When one gas module furnace is started at a certain time in a certain day, the self-checking system thereof displays a fault, and the intelligent control system of the gas module furnace shuts down the gas module furnace.
The intelligent control system of the gas module furnace sends a fault signal to the signal conversion equipment 21, on one hand, the display screen 22 displays fault information in a text mode, on the other hand, the router 22 sends fault content to a server, and the server sends the fault information to clients installed on terminals such as client mobile phones and computers.
Meanwhile, the intelligent control system of the gas module furnace cancels one of the six manually shielded furnaces in advance, and continues to normally operate the six gas module furnaces.
At a certain time of a day, water flow is reduced and water temperature is increased due to scale accumulation after long-term use. After one gas module furnace is started, the water outlet temperature exceeds a limit value, and the intelligent control system of the gas module furnace shuts down the gas module furnace.
The same processing scheme as that of the self-checking fault is adopted.
When the winter in a certain year encounters severe cold weather, the hot water consumption is increased sharply, six gas module furnaces are started at 49 ℃, and c is still reduced until the temperature is lower than 48 ℃.
The intelligent control system of the gas module furnace cancels one of six manually shielded furnaces in advance, and the seven gas module furnaces run. And if c is still reduced, continuously canceling the shielding one, operating eight gas module furnaces, and so on.
If all twelve are started, c is still reduced, a signal with insufficient power is sent to the signal conversion equipment 21, information with insufficient power is displayed in the display screen 22 in a character form and is sent to a client installed on a terminal such as a client mobile phone and a computer.
Compared with the prior art, the intelligent control system for the gas module furnace can independently control each module furnace in the unit, so that the adjustable range of power is wide, the operation mode is flexible and changeable, and the energy-saving effect is good.
At the same time, the ability to control individually also enables a first-come, first-stop rotation mechanism to be implemented in operation. When the module furnaces need to be put into practical use, the accumulated running time is started preferentially to be short according to the running time of each module furnace, so that all the module furnaces run in a balanced manner, the dead accumulation is prevented, and the service life of the whole unit is prolonged.
And the system is also provided with single-day operation time period circulation and week operation time period circulation, so that the actual use condition can be fitted to the maximum extent, and the energy consumption is further reduced.
The fault signal is translated into characters and displayed on a display screen of the equipment, and synchronously displayed at a computer end and a mobile phone end, so that the fault is greatly convenient for a user to accurately judge the fault, the level requirement of maintenance personnel is reduced, the response is convenient and timely, and the defect of delayed maintenance reaction due to unattended system fault is overcome.
By using a multi-level authority password system, irrelevant personnel are prevented from modifying the operation parameters of the machine randomly, and meanwhile, the influence of the change of the personnel at each level on the operation of the machine is prevented.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by the present specification, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. The utility model provides a gas module unit intelligence control system to the controller is as the carrier, controls the heating/hot water supply system who constitutes by equipment such as many gas module stoves, water tank, heat exchanger, circulating pump, pipe network, its characterized in that: the operator presets inertia temperature difference b of each gas module furnace in the intelligent control system of the gas module unit through the controller1、b2、b3……bnTarget temperature d, heat preservation temperature difference e, e is greater than b1+b2+b3……+bn；
The intelligent control system of the gas module set collects the running time a of each gas module furnace1、a2、a3……anThe temperature c of the water tank and the following control is carried out:
c and d are compared;
when c is smaller than d-e, controlling all the gas module furnaces to start;
screening out a1To anMaximum value of (a)max，amaxCorresponding inertial temperature difference of bmaxWhen c is equal to d-b1-b2-b3-……-bn+bmaxWhen is turned off, amaxThe corresponding gas module furnace;
screening out a1To anRemoving amaxExternal maximum value a'max，a'maxCorresponding inertial temperature difference of b'maxWhen c is equal to d-b1-b2-b3-……-bn+bmax+b'maxWhile, close a'maxThe corresponding gas module furnace;
and so on until only a remains1To anMinimum value of amin，aminCorresponding inertial temperature difference of bminWhen c equals d, turn off aminThe corresponding gas module furnace;
c is gradually reduced along with natural cooling and cooling caused by water;
screening out a1To anMiddle new minimum value a'min，a'minCorresponding inertial temperature difference of b'minWhen c is equal to d-b'minThen start a'minThe corresponding gas module furnace;
if c rises, a 'is closed when c is equal to d'minThe corresponding gas module furnace;
if c is still reduced, screening a1To anRemoving aminSecond smallest value of a "min，a”minCorresponding inertial temperature difference of b'minWhen c is equal to d-b'min-b”minWhen, start a "minThe corresponding gas module furnace;
if c rises, then when c is equal to d-b'minClosing a'minThe corresponding gas module furnace is closed to a 'when c is equal to d'minThe corresponding gas module furnace;
if c continues to decline, the process is analogized, and a is screened out1To anAnd the third small value, and starting the corresponding gas module furnace.
2. The intelligent control system of a gas module unit according to claim 1, characterized in that: the operating time a1, a2 and a3 … … an of the gas module furnace are in hours, the set values of the target temperature d and the heat preservation temperature difference e are cyclically changed by taking days as a cycle, and the whole cycle of a single day is cyclically changed by taking weeks as a cycle.
3. The intelligent control system of a gas module unit according to claim 1, characterized in that: and when all the gas module furnaces are controlled to be started, the gas module furnaces are started in sequence at certain time intervals according to the operation time length of the gas module furnaces and the sequence from short to long.
4. The intelligent control system of a gas module unit according to any one of claims 1 to 3, characterized in that: the gas module furnace is provided with a self-checking system;
before the intelligent control system of the gas module unit controls the gas module furnace to be started, the self-checking system is controlled to be started, and an operation result is sent back to the controller;
the intelligent control system of the gas module unit analyzes the operation result:
if no fault is displayed in the result, controlling the gas module furnace to start;
and if the result shows that the fault exists, giving up control over the starting of the gas module furnace.
5. The intelligent control system of a gas module unit as set forth in claim 4, wherein: the gas module unit intelligently controls and also collects the water outlet temperature of each gas module furnace, and analyzes the temperature data;
and when the water outlet temperature of one gas module furnace is too high or the temperature is raised too fast, controlling the corresponding gas module furnace to be closed.
6. The intelligent control system of a gas module unit as set forth in claim 5, wherein: when a certain gas module furnace the self-checking system operation result shows that there is a fault, and detects a certain gas module furnace's leaving water temperature is too high, except that it closes of on-the-spot control, still shields the trouble gas module furnace, and leads to gas module unit intelligence control system's control rule changes:
when all the gas module furnaces are controlled to be started, fault machines are removed;
screening out a1To anWhen the maximum value is in the range, the fault machine is removed;
screening out a1To anAnd when the minimum value is in the range, the fault machine is removed.
7. The intelligent control system of a gas module unit as set forth in claim 6, wherein: the controller is further connected with one or more warning devices, and the intelligent control system of the gas module unit shields faults and starts the warning devices to send warning information while the gas module furnace shields the faults.
8. The intelligent control system of a gas module unit according to claim 7, characterized in that: and when c continuously decreases until all the units are started, the temperature can not be maintained, namely c is less than d-e, the warning equipment is also started to send warning information.
9. The intelligent control system of a gas module unit according to claim 8, characterized in that: the intelligent control system of the gas module unit can also actively set a shielding rule to shield one or more gas module furnaces.
10. The intelligent control system of a gas module unit according to claim 7, characterized in that: setting the authority of inertia temperature difference b, target temperature d and heat preservation temperature difference e in the controller, actively setting and shielding the authority of one or more gas module furnaces and the functional authority of other functions, and setting password protection divided into different authority levels.
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| CN105928056A (en) * | 2016-06-14 | 2016-09-07 | 张帆 | Boiler group control system based on water mixing device |
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