CN103970161A - Hot and cold water mixing temperature regulating control method and hot and cold water mixing temperature regulating control system - Google Patents
Hot and cold water mixing temperature regulating control method and hot and cold water mixing temperature regulating control system Download PDFInfo
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- CN103970161A CN103970161A CN201310681777.4A CN201310681777A CN103970161A CN 103970161 A CN103970161 A CN 103970161A CN 201310681777 A CN201310681777 A CN 201310681777A CN 103970161 A CN103970161 A CN 103970161A
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Abstract
The invention provides a hot and cold water mixing temperature regulating control method and a hot and cold water mixing temperature regulating control system. The method includes the steps: acquiring an original water temperature or setting the original water temperature; acquiring a hot water temperature; automatically allocating an original water volume and a hot water volume according to the original water temperature and the hot water temperature; automatically feeding sufficient original water volume; automatically feeding sufficient hot water volume. The system comprises a first temperature sensor, a second temperature sensor, a first control mainframe, a second control mainframe, an original water valve and a hot water valve. The first temperature sensor used for detecting the original water temperature and the second temperature water used for detecting the hot water temperature are both connected with the first control mainframe which is connected with the second control mainframe, and the second control mainframe is connected with the original water valve and the hot water valve. The hot and cold water mixing temperature regulating control method and the hot and cold water mixing temperature regulating control system have the advantages that the temperature can be well controlled within a required range, cost can be reduced, and slurry is prevented from adhering to a feeding port to block the feeding port.
Description
Technical field
The present invention relates to automation control area, relate in particular to a kind of hot and cold water mixing temperature adjustment control method and system.
Background technology
Industrial, utilize starch to produce the with a long history of starch sugar for raw material, the starch sugar of producing is of a great variety.The general tank of sizing mixing that uses of corn starch pulping, the temperature of the water that feeds intake generally will be controlled at certain scope, in order to reduce steam consumption, the temperature water that feeds intake in general employing, this is than completely feeding intake and saved many steam with former water.But can there is such problem: such as the coolant-temperature gage that feeds intake is set as 45 DEG C, start the water program of throwing, and start raw water pump and heat-exchanger pump, set the water that feeds intake of 80HL, just throw enough water less than 5 minutes, but water temperature often only has degree more than 30, this is because water speed is too fast, variable valve all has little time to regulate, speed is unable to catch up with, even if (" PID " is the english abbreviation of " Proportion Integration Differentiation " to revise its pid parameter, it is the meaning of " proportion integration differentiation ", be generally used for the closed-loop control of industrial automation aspect) all can not react and regulate so soon.And, if the high steam that there will be of instantaneous water temperature emits toward commissioning pipe top, can make a lot of powder be bonded on tube wall, may cause in the course of time stifled tremie pipe; Also may occur that water temperature total in tank is on the low side, because only have a variable valve to be contained on hot water pipeline, in the time that variable valve is turned down, former water may have been taken advantage of the occasion into enough water, and water temperature is just certainly on the low side so, and that back segment will consume a little steam more.
In prior art, the general temperature adjusting control that uses automatic regulating valve to carry out hot and cold water mixing, using expensive automatic regulating valve regulates in real time, and need to adopt complicated pid parameter control method, cost is high and control complicated, and can not realize well the adjusting control of temperature, also be easy to cause slurry to be sticky in charging aperture and charging aperture is blocked.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of hot and cold water mixing temperature adjustment control method and system, adopt new algorithm, simple to operate, can finely temperature must be controlled to needed scope, and do not need to use expensive automatic adjusting and complicated pid parameter control method, can reduce costs, can also prevent that slurry is sticky in charging aperture and charging aperture is blocked.
For solving above technical matters, the invention provides a kind of hot and cold water mixing temperature adjustment control method, it comprises the following steps:
The former coolant-temperature gage of automatic acquisition or former coolant-temperature gage value is set;
Automatic acquisition hot water temperature;
Automatically distribute the former water yield and hot water amount according to former coolant-temperature gage and hot water temperature;
The first main control system sends a control signal to the second main control system, so that the former water valve of the second main control system control first, the second former water valve and raw water pump are opened, starts into Yuan Shui;
The first main control system sends the instruction of opening the first hot water valve, the second hot water valve and heat-exchanger pump to the second main control system, so that second main control system control the first hot water valve, the second hot water valve and heat-exchanger pump are opened, start into hot water.
Described method control is simple, and can realize the accurate control of inflow, and do not need to use complicated pid parameter control method, cost reduces greatly, and, advanced former water, laggard hot water, the laggard hot water at once former water low with temperature mixes, and can not cause slurry to be sticky in charging aperture charging aperture is blocked because of instantaneous water temperature over-high.
Further, described according to former coolant-temperature gage and the hot water temperature former water yield of distribution and hot water amount automatically, comprising:
According to formula V1=V(T2-T)/(T2-T1) distribute the former water yield;
Distribute hot water amount according to formula V2=V-V1,
Wherein, V1 represents the former water yield; V2 represents hot water amount; V represents total inflow; T1 represents former coolant-temperature gage; T2 represents hot water temperature; T represents the temperature of mixed water.
Further, described former coolant-temperature gage value is set, comprises:
Enter a small amount of former water to sizing mixing in tank;
By the temperature that is arranged on the three-temperature sensor of sizing mixing in tank and measures entered former water;
The former coolant-temperature gage recording is manually arranged on and controls interface.
Further, described the first main control system sends a control signal to the second main control system, so that the former water valve of the second main control system control first, the second former water valve and raw water pump are opened, starts, into Yuan Shui, to comprise:
Control the first former water valve and the second former water valve unlatching;
Control raw water pump is opened;
Detect raw water flow;
After cutting out, raw water pump controls the first former water valve and the second former water valve cuts out entering to control after enough former water yields.
Further, described the first main control system sends a control signal to the second main control system, so that second main control system control the first hot water valve, the second hot water valve and heat-exchanger pump are opened, starts, into hot water, to comprise:
Controlling the first hot water valve and the second hot water valve opens;
Control heat-exchanger pump is opened;
Detect water inlet total amount;
After total inflow reaches predetermined value, control and after heat-exchanger pump cuts out, control the first hot water valve and the second hot water valve is closed.
For solving above technical matters, the present invention also provides a kind of control system that has adopted described hot and cold water mixing temperature adjustment control method, comprise the first temperature sensor for surveying former coolant-temperature gage, for surveying the second temperature sensor of hot water temperature, the first main control system, the second main control system, the first former water valve, the second former water valve, the first hot water valve and the second hot water valve, described the first temperature sensor is connected with the first main control system respectively with the second temperature sensor, described the first main control system is connected with the second main control system, described the second main control system respectively with the first former water valve, the second former water valve, the first hot water valve is connected with the second hot water valve.
Described control system also comprises for raw water pump being entered to the raw water pump of the tank of sizing mixing with for hot water being pumped into the heat-exchanger pump of the tank of sizing mixing.
Described control system also comprises flowmeter, and described flowmeter is arranged on main pipeline, can measure in real time and enter the discharge of sizing mixing in tank.
Described the first former water valve, the second former water valve, the first hot water valve and the second hot water valve are all with feedback approach switch.
Also comprise three-temperature sensor, described three-temperature sensor is arranged on sizes mixing in tank.Can be only in tank, three-temperature sensor be set sizing mixing, just can realizes the temperature that can measure former coolant-temperature gage and can realize again mixed water, cost-saving, and facilitate.
Adopt above technical scheme, the obtained beneficial effect of the present invention is:
Hot and cold water mixing temperature adjustment control method provided by the invention and system, simple to operate, can finely temperature must be controlled to needed scope, and can reduce costs, can also prevent that slurry is sticky in charging aperture and charging aperture is blocked.
Brief description of the drawings
Below in conjunction with the drawings and specific embodiments, technology of the present invention is described in further detail:
Fig. 1 is the logic schematic diagram of hot and cold water mixing temperature regulation and control system of the present invention;
Fig. 2 is the application schematic diagram of hot and cold water mixing temperature regulation and control system of the present invention;
Fig. 3 is the flow chart of steps of hot and cold water mixing temperature adjustment control method of the present invention.
Embodiment
As shown in Figure 1, for hot and cold water mixing temperature regulation and control system logic schematic diagram of the present invention, described control system comprises the first temperature sensor 1, the second temperature sensor 2, the first main control system 17, the second main control system 18, be arranged on raw water pipeline 14 for closing the first former water valve 3 and the second former water valve 8 of former water, be arranged on hot water pipeline 13 for closing the first hot water valve 5 and the second hot water valve 7 and the flowmeter 9 of hot water, as shown in Figure 2, the first temperature sensor 1 is arranged on 12 li of hot-water cylinders, for detection of hot water temperature, the second temperature sensor 2 is arranged on 11 li of former water pots, for detection of former coolant-temperature gage.The first former water valve 3, the second former water valve 8, the first hot water valve 5 and the second hot water valve 7 are operated pneumatic valve, and flowmeter 9 is arranged on main pipeline 15, for detection of the total amount of current that enters the tank 16 of sizing mixing.The first main control system 17 respectively with the first temperature sensor 1, the second temperature sensor 2 and the long-range connection of flowmeter 9, the first temperature sensor 1 sends to the first main control system 17 by the hot water temperature's value detecting and the second temperature sensor 2 by the former coolant-temperature gage value detecting, carry out analytical calculation by the first main control system 17, calculate the former water yield and the hot water amount that need distribution, simultaneously, the first main control system 17 is connected with the second main control system 18, the second main control system 18 and the first former water valve 3, the second former water valve 8, the first hot water valve 5 and the long-range connection of the second hot water valve 7, after the first main control system 17 calculates the former water yield and hot water amount that needs to distribute, control the second main control system 18 and control the first former water valve 3, the second former water valve 8, the unlatching of the first hot water valve 5 and the second hot water valve 7.
Described control system also comprises raw water pump 4 and heat-exchanger pump 6, raw water pump 4 is for tank 16 that raw water pump is gone to size mixing, heat-exchanger pump 5 is for tank 16 that heat-exchanger pump is gone to size mixing, and raw water pump 4 is all connected with the second main control system 18 and controls open and close by the second main control system 18 with heat-exchanger pump 6.The first former water valve 3 and the second former water valve 8 lay respectively at the two ends of raw water pump 4.The first hot water valve 5 and the second hot water valve 7 lay respectively at heat-exchanger pump 6 two ends.
Described main pipeline 15 is connected with the bottom of the tank 16 of sizing mixing, due to intake be that bottom from the tank 16 of sizing mixing pumps into, there is certain impact power, this self-assembling formation beating action, make the water of high low temperature be mixed to get more even, do not need stirrer to mix, and can prevent from sneaking into too much oxygen, be conducive to improve the quality of product, simultaneously, this kind of water intake mode can utilize siphon principle automatic feeding water, when the water level of hot-water cylinder 12 does not need to open heat-exchanger pump 4 during higher than the water level of the tank 16 of sizing mixing, when the water level of former water pot 11 does not need to open raw water pump 6 during higher than the water level of the tank 16 of sizing mixing, thereby conserve energy.
Size mixing in tank 16 and be also provided with three-temperature sensor 10, the three-temperature sensors 10 for measuring the temperature that enters the water in tank 16 of sizing mixing.
Concrete control procedure is as follows:
On the first main control system 17, set the temperature T of total inflow V and required mixed water, the first temperature sensor 1 is sent to respectively the first main control system 17 by the hot water temperature's data that measure and the second temperature sensor 2 in real time by the former coolant-temperature gage data that measure, after the temperature data obtaining being processed by the first main control system 17, calculate the former water yield and the hot water amount that need to enter, and send a control signal to the second main control system 18, so that the second main control system 18 is controlled the first former water valve 3, the second former water valve 8 and raw water pump 4 are opened, start to enter Yuan Shui toward the tank 16 of sizing mixing, now, flowmeter 9 measures the raw water flow that enters the tank 16 of sizing mixing, flowmeter 9 can send the flow value real time remote recording to first main control system 17, in the time that raw water flow reaches the former water yield calculating, the first main control system 17 sends and controls raw water pump 4 to the second main control system 18, the instruction that the first former water valve 3 and the second former water valve 8 are closed, now, the second main control system 18 is received this out code, and control raw water pump 4, the first former water valve 3 and the second former water valve 8 are successively closed, after closing, the first main control system 17 sends and opens the first hot water valve 5 to the second main control system 18, the instruction of the second hot water valve 7 and heat-exchanger pump 6, so that the second main control system 18 is controlled the first hot water valve 5, the second hot water valve 7 and heat-exchanger pump 6 are opened, start into hot water, flowmeter 9 statistics enter the total inflow of the tank 16 of sizing mixing, and send in real time this total inflow data to the first main control system 17, in the time that total inflow reaches the predetermined value V distributing, the first main control system 17 sends and controls heat-exchanger pump 6 to the second main control system 18, the instruction that the first hot water valve 5 and the second hot water valve 7 are closed, the second main control system 18 is controlled heat-exchanger pump 6, the first hot water valve 5 and the second hot water valve 7 are successively closed, whole water inlet process finishes.
The step of described hot and cold water mixing temperature adjustment control method is as follows:
S10: by the second temperature sensor former coolant-temperature gage of 2 automatic acquisition or former coolant-temperature gage value is set.
Wherein, described former coolant-temperature gage can be measured by the second temperature sensor 2 being arranged in former water pot 11, describedly former coolant-temperature gage value is set comprises:
Enter a small amount of former water to sizing mixing in tank 16;
By the temperature that is arranged on the three-temperature sensor 10 of sizing mixing in tank 16 and measures entered former water;
The former coolant-temperature gage recording is manually arranged on and controls interface.
S20: automatic acquisition hot water temperature, described hot water temperature's value is drawn by the first temperature sensor measurement that is arranged on hot-water cylinder.
S30: automatically distribute the former water yield and hot water amount according to former coolant-temperature gage and hot water temperature, it comprises: according to formula V1=V(T2-T)/(T2-T1) distribute the former water yield; Distribute hot water amount according to formula V2=V-V1, wherein, V1 represents the former water yield; V2 represents hot water amount; V represents total inflow; T1 represents former coolant-temperature gage; T2 represents hot water temperature; T represents the temperature of mixed water.V1, the unit of V2 and V rises, T1, the unit of T2 and T is degree Celsius.
S40: the first main control system 17 sends a control signal to the second main control system 18, opens so that the second main control system 18 is controlled the first former water valve 3, the second former water valve 8 and raw water pump 4, starts into Yuan Shui, and it comprises:
Control the first former water valve 3 and the second former water valve 8 is opened;
Controlling raw water pump 4 opens;
Detect raw water flow;
After cutting out, raw water pump 4 controls the first former water valve 3 and the second former water valve 8 cuts out entering to control after enough former water yields.
S50: the first main control system sends a control signal to the second main control system, so that second main control system control the first hot water valve, the second hot water valve and heat-exchanger pump are opened, starts into hot water, and it comprises the following steps:
Control the first hot water valve 3 and the second hot water valve 8 is opened;
Controlling heat-exchanger pump 6 opens;
Detect water inlet total amount;
After total inflow reaches predetermined value, control and after heat-exchanger pump 6 cuts out, control the first hot water valve 3 and the second hot water valve 8 is closed.
Finally it should be noted that: these are only the preferred embodiments of the present invention; be not limited to the present invention; although the present invention is had been described in detail with reference to embodiment; for a person skilled in the art; its technical scheme that still can record aforementioned each embodiment is modified; or part technical characterictic is wherein equal to replacement; but within the spirit and principles in the present invention all; any amendment of doing, be equal to replacement, improvement etc., within protection scope of the present invention all should be included in.
Claims (10)
1. a hot and cold water mixing temperature adjustment control method, is characterized in that, comprises the following steps:
The former coolant-temperature gage of automatic acquisition or former coolant-temperature gage value is set;
Automatic acquisition hot water temperature;
Automatically distribute the former water yield and hot water amount according to former coolant-temperature gage and hot water temperature;
The first main control system sends a control signal to the second main control system, so that the former water valve of the second main control system control first, the second former water valve and raw water pump are opened, starts into Yuan Shui;
The first main control system sends a control signal to the second main control system, so that second main control system control the first hot water valve, the second hot water valve and heat-exchanger pump are opened, starts into hot water.
2. hot and cold water mixing temperature adjustment control method according to claim 1, is characterized in that: described according to former coolant-temperature gage and the hot water temperature former water yield of distribution and hot water amount automatically, comprising:
According to formula V1=V(T2-T)/(T2-T1) distribute the former water yield;
Distribute hot water amount according to formula V2=V-V1,
Wherein, V1 represents the former water yield; V2 represents hot water amount; V represents total inflow; T1 represents former coolant-temperature gage; T2 represents hot water temperature; T represents the temperature of mixed water.
3. hot and cold water mixing temperature adjustment control method according to claim 1, is characterized in that: described former coolant-temperature gage value is set, comprises:
Enter a small amount of former water to sizing mixing in tank;
By the temperature that is arranged on the three-temperature sensor of sizing mixing in tank and measures entered former water;
The former coolant-temperature gage recording is manually arranged on and controls interface.
4. hot and cold water mixing temperature adjustment control method according to claim 1, it is characterized in that: described the first main control system sends a control signal to the second main control system, so that the former water valve of the second main control system control first, the second former water valve and raw water pump are opened, start, into Yuan Shui, to comprise:
Control the first former water valve and the second former water valve unlatching;
Control raw water pump is opened;
Detect raw water flow;
After cutting out, raw water pump controls the first former water valve and the second former water valve cuts out entering to control after enough former water yields.
5. hot and cold water mixing temperature adjustment control method according to claim 1, it is characterized in that: described the first main control system sends a control signal to the second main control system, so that second main control system control the first hot water valve, the second hot water valve and heat-exchanger pump are opened, start, into hot water, to comprise:
Controlling the first hot water valve and the second hot water valve opens;
Control heat-exchanger pump is opened;
Detect water inlet total amount;
After total inflow reaches predetermined value, control and after heat-exchanger pump cuts out, control the first hot water valve and the second hot water valve is closed.
6. one kind has adopted the control system of the hot and cold water mixing temperature adjustment control method described in claim 1-5, it is characterized in that: comprise the first temperature sensor for surveying former coolant-temperature gage, for surveying the second temperature sensor of hot water temperature, the first main control system, the second main control system, the first former water valve, the second former water valve, the first hot water valve and the second hot water valve, described the first temperature sensor is connected with the first main control system respectively with the second temperature sensor, described the first main control system is connected with the second main control system, described the second main control system respectively with the first former water valve, the second former water valve, the first hot water valve is connected with the second hot water valve.
7. hot and cold water mixing temperature regulation and control system according to claim 6, is characterized in that: also comprise for raw water pump being entered to the raw water pump of the tank of sizing mixing with for hot water being pumped into the heat-exchanger pump of the tank of sizing mixing.
8. hot and cold water mixing temperature regulation and control system according to claim 6, is characterized in that: also comprise flowmeter.
9. hot and cold water mixing temperature regulation and control system according to claim 6, is characterized in that: described the first former water valve, the second former water valve, the first hot water valve and the second hot water valve are all with feedback approach switch.
10. hot and cold water mixing temperature regulation and control system according to claim 6, is characterized in that: also comprise three-temperature sensor, described three-temperature sensor is arranged on sizes mixing in tank.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310681777.4A CN103970161A (en) | 2013-12-12 | 2013-12-12 | Hot and cold water mixing temperature regulating control method and hot and cold water mixing temperature regulating control system |
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| CN201310681777.4A CN103970161A (en) | 2013-12-12 | 2013-12-12 | Hot and cold water mixing temperature regulating control method and hot and cold water mixing temperature regulating control system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113415886A (en) * | 2021-07-30 | 2021-09-21 | 山东本源环境科技有限公司 | Anaerobic ammonia oxidation reactor water inlet temperature control system and PID control method thereof |
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| JPH02122312A (en) * | 1988-11-01 | 1990-05-10 | Seiko Epson Corp | Water temperature controller |
| CN101178602A (en) * | 2007-12-04 | 2008-05-14 | 深圳市星辰激光技术有限公司 | Cooling liquid constant thermal apparatus and control method thereof |
| CN102613899A (en) * | 2012-03-22 | 2012-08-01 | 杭州电子科技大学 | Self-weighting constant-temperature water distribution method and device |
| CN202418736U (en) * | 2012-02-20 | 2012-09-05 | 朱祥桢 | Intelligent constant-temperature water mixing device |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0277811A (en) * | 1988-09-13 | 1990-03-16 | Toto Ltd | Hot water and cold water mixing device |
| JPH02122312A (en) * | 1988-11-01 | 1990-05-10 | Seiko Epson Corp | Water temperature controller |
| CN101178602A (en) * | 2007-12-04 | 2008-05-14 | 深圳市星辰激光技术有限公司 | Cooling liquid constant thermal apparatus and control method thereof |
| CN202418736U (en) * | 2012-02-20 | 2012-09-05 | 朱祥桢 | Intelligent constant-temperature water mixing device |
| CN102613899A (en) * | 2012-03-22 | 2012-08-01 | 杭州电子科技大学 | Self-weighting constant-temperature water distribution method and device |
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| CN113415886A (en) * | 2021-07-30 | 2021-09-21 | 山东本源环境科技有限公司 | Anaerobic ammonia oxidation reactor water inlet temperature control system and PID control method thereof |
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