CN110780693B - Automatic material temperature control method - Google Patents
Automatic material temperature control method Download PDFInfo
- Publication number
- CN110780693B CN110780693B CN201911113244.XA CN201911113244A CN110780693B CN 110780693 B CN110780693 B CN 110780693B CN 201911113244 A CN201911113244 A CN 201911113244A CN 110780693 B CN110780693 B CN 110780693B
- Authority
- CN
- China
- Prior art keywords
- temperature
- cooling
- pump valve
- timing
- temperature rise
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/30—Automatic controllers with an auxiliary heating device affecting the sensing element, e.g. for anticipating change of temperature
Abstract
The invention discloses a material temperature automatic control method, which comprises the following steps: when the set cooling temperature is greater than or equal to the measured temperature, closing a pump valve of the cooling medium, and performing comparison again; when the set cooling temperature is lower than the measured temperature, opening a pump valve of the cooling medium and starting cooling timing, when the set cooling temperature is reached or the timing reaches the preset cooling time, closing the pump valve of the cooling medium and starting interval timing, and when the cooling interval time is reached, comparing again; temperature rise control: when the set temperature rise temperature is less than or equal to the measured temperature, closing a pump valve of the heating medium, and performing comparison again; and when the set temperature rise temperature is greater than the measured temperature, opening a pump valve of the heating medium and starting temperature rise timing, closing the pump valve of the heating medium and starting interval timing after the preset temperature rise time is reached or the timing reaches the preset temperature rise time, and comparing again after the preset temperature rise interval time is reached. Thereby automatically and accurately controlling the temperature of the material.
Description
Technical Field
The invention relates to the technical field of temperature control.
Background
In industrial production, the automatic control of the temperature of materials is to meet the process requirements in the production process. At present, the method for controlling the temperature of materials by cooling or heating jackets is as follows: the material and the cooling medium or the heating medium are subjected to heat exchange through the separated jackets, so that the material can radiate or absorb heat, and the temperature of the material is reduced or increased to achieve the aim of reaching the temperature required by the process.
At present, the method for realizing the temperature control is generally adopted: the automatic control system controls the corresponding valves and the corresponding pumps to be switched on and off according to the comparison between the actual measured value of the material and the set target value, so that the cooling medium or the heating medium flows or stops, and the heat exchange between the material and the cooling medium or the heating medium is realized. Further cooling or heating the material and stopping cooling or heating, and finally achieving the purpose of automatically controlling the temperature of the material.
The control temperature is based on the comparison of the magnitude relation between the actual temperature measurement value and the target temperature control value. When the actual measured temperature reaches the target temperature control value, the valve and the pump that control the cooling medium or the heating medium are closed. But at this time, the continuous flow of the cooling medium or the heating medium is cut off, but the heat exchange between the cooling medium or the heating medium in the jacket and the material is continued until the temperature of the cooling medium or the heating medium is the same as the temperature of the material. Therefore, although the automatic control system cuts off the continuous flow of the cooling medium or the heating medium when the actually measured temperature reaches the target temperature control value, the heat exchange is continued, which causes the temperature of the material to further decrease or increase, and thus, the temperature may greatly deviate from the target temperature control value.
Disclosure of Invention
The invention aims to provide a method for automatically controlling the temperature of a material, which is used for automatically and accurately controlling the temperature of the material.
The technical scheme for realizing the purpose is as follows:
an automatic control method for material temperature, which controls a pump valve to enable heat exchange between a cooling medium or a heating medium and a material, comprises temperature reduction control and temperature rise control,
the cooling control comprises:
comparing the set temperature with the measured temperature, closing a pump valve of the cooling medium when the set temperature is greater than or equal to the measured temperature, and re-comparing the set temperature with the measured temperature; when the set cooling temperature is lower than the measured temperature, opening a pump valve of the cooling medium and starting cooling timing, in the timing process, if the measured temperature reaches the set cooling temperature before the preset cooling time is not reached, closing the pump valve of the cooling medium, when the timing reaches the preset cooling time, closing the pump valve of the cooling medium and starting interval timing, and when the timing reaches the preset cooling interval time, comparing the set cooling temperature with the measured temperature again;
the temperature rise control includes:
comparing the set temperature rise temperature with the measured temperature, closing a pump valve of the heating medium when the set temperature rise temperature is less than or equal to the measured temperature, and re-comparing the set temperature rise temperature with the measured temperature; and when the set temperature rise is greater than the measured temperature, opening a pump valve of the heating medium and starting temperature rise timing, in the timing process, if the measured temperature reaches the set temperature rise before the preset temperature rise time, closing the pump valve of the heating medium, when the timing reaches the preset temperature rise time, closing the pump valve of the heating medium and starting interval timing, and when the preset temperature rise interval time is reached, re-comparing the set temperature rise temperature with the measured temperature.
Preferably, the pump valve comprises a pump valve, and the valve is an on-off control valve or a regulating valve.
Preferably, the heat exchange between the material and the cooling medium or heating medium takes place via a cooling jacket or heating jacket separating them.
Preferably, the set temperature-increasing temperature is less than or equal to the set temperature-decreasing temperature.
The invention has the beneficial effects that: on the basis of controlling the temperature of the material by the cooling jacket or the heating jacket, the invention realizes the accurate control of the temperature of the material in the cooling or heating process by increasing the auxiliary temperature control condition of 'temperature reduction (or temperature rise) time' and 'temperature reduction (or temperature rise) interval time'. The temperature deviation caused by the heat exchange continuing due to the program termination is effectively avoided.
Drawings
FIG. 1 is a flow chart of the cooling control of the automatic material temperature control method of the present invention;
fig. 2 is a flow chart of temperature reduction control of a material temperature control method in the prior art.
Detailed Description
The invention will be further explained with reference to the drawings.
Currently, an automatic control system sets a target control value of material temperature according to production process requirements, simultaneously acquires actual temperature of the material in real time through a temperature sensor embedded in the material, compares the acquired actual temperature measurement value with the set target control value of the temperature, and closes or opens a pump valve for controlling cooling medium or heating medium according to the comparison result to realize automatic control of the temperature of the material. Taking cooling control as an example, the process is shown in fig. 2.
The method for automatically controlling the temperature of the material of the invention enables heat exchange to be generated between a cooling medium or a heating medium and the material by controlling a pump valve, and comprises the steps of temperature reduction control and temperature rise control, wherein,
the cooling control comprises the following steps:
comparing the set temperature with the measured temperature, closing a pump valve of the cooling medium when the set temperature is greater than or equal to the measured temperature, and re-comparing the set temperature with the measured temperature; and when the set cooling temperature is less than the measured temperature, opening a pump valve of the cooling medium and starting cooling timing, in the timing process, if the measured temperature reaches the set cooling temperature before the preset cooling time is not reached, closing the pump valve of the cooling medium, when the timing reaches the preset cooling time, closing the pump valve of the cooling medium and starting interval timing, and when the timing reaches the preset cooling interval time, comparing the set cooling temperature with the measured temperature again. Taking cooling control as an example, the process is shown in fig. 1.
The temperature rise control includes:
comparing the set temperature rise temperature with the measured temperature, closing a pump valve of the heating medium when the set temperature rise temperature is less than or equal to the measured temperature, and re-comparing the set temperature rise temperature with the measured temperature; and when the set temperature rise is greater than the measured temperature, opening a pump valve of the heating medium and starting temperature rise timing, in the timing process, if the measured temperature reaches the set temperature rise before the preset temperature rise time, closing the pump valve of the heating medium, when the timing reaches the preset temperature rise time, closing the pump valve of the heating medium and starting interval timing, and when the preset temperature rise interval time is reached, re-comparing the set temperature rise temperature with the measured temperature.
The set temperature rise is less than or equal to the set temperature fall. And when the set temperature rise is equal to the set temperature fall, continuously converting the temperature fall control and the temperature rise control, so that the temperature is finally kept consistent with the set temperature rise or the set temperature fall.
The cooling (or heating) time and the cooling (or heating) interval time can be set arbitrarily. That is, when the existing temperature control method executes temperature reduction or temperature rise, the newly added auxiliary temperature control of the present invention is also started at the same time, that is, the time of the temperature reduction or temperature rise process is automatically accumulated, then the temperature reduction or temperature rise is automatically terminated according to the set "temperature reduction (or temperature rise) time", the automatic time accumulation is started after termination, then according to the set "temperature reduction (or temperature rise) interval time", when the set "temperature reduction (or temperature rise) interval time" is reached, a period of the auxiliary control is completed, and the control at this time returns to the control by the original temperature control program. And in the same way, the original temperature control program is executed circularly and repeatedly, and meanwhile, the auxiliary temperature control is executed. The defect that the actual temperature control process of the material deviates due to temperature lag in the temperature reduction (or rise) process can be effectively avoided through auxiliary temperature control. Because, the temperature reduction (or temperature rise) time and the temperature reduction (or temperature rise) interval time can be set arbitrarily, the temperature reduction or temperature rise control is terminated in advance through the temperature reduction (or temperature rise) time, and the lagging temperature is compensated for through the temperature reduction (or temperature rise) interval time. In the actual temperature control process, according to the deviation between the temperature lag and the actual temperature, more accurate temperature control can be realized by continuously adjusting the parameters of the temperature reduction (or temperature rise) time and the temperature reduction (or temperature rise) interval time which can be randomly set. So as to effectively avoid the defect that the temperature control is deviated because the temperature lag and the refrigerant in the jacket can continuously carry out heat exchange with the material.
In addition, the pump valve includes a pump valve, and the valve is an on-off control valve or a regulating valve. If the opening of the valve is adjusted by the adjusting valve to control the cooling or heating speed, the opening of the valve can be automatically adjusted according to the distance control target value in the program, and the temperature deviation is reduced.
The above embodiments are provided only for illustrating the present invention and not for limiting the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and therefore all equivalent technical solutions should also fall within the scope of the present invention, and should be defined by the claims.
Claims (3)
1. An automatic control method for material temperature, which enables heat exchange to occur between a cooling medium or a heating medium and a material by controlling a pump valve, is characterized by comprising temperature reduction control and temperature rise control,
the cooling control comprises:
comparing the set temperature with the measured temperature, closing a pump valve of the cooling medium when the set temperature is greater than or equal to the measured temperature, and re-comparing the set temperature with the measured temperature; when the set cooling temperature is lower than the measured temperature, opening a pump valve of the cooling medium and starting cooling timing, in the timing process, if the measured temperature reaches the set cooling temperature before reaching the preset cooling time, closing the pump valve of the cooling medium, when the timing reaches the preset cooling time, closing the pump valve of the cooling medium and starting interval timing, and when the timing reaches the preset cooling interval time, comparing the set cooling temperature with the measured temperature again;
the temperature rise control includes:
comparing the set temperature rise temperature with the measured temperature, closing a pump valve of the heating medium when the set temperature rise temperature is less than or equal to the measured temperature, and re-comparing the set temperature rise temperature with the measured temperature; when the set temperature rise is greater than the measured temperature, opening a pump valve of the heating medium and starting temperature rise timing, in the timing process, if the measured temperature reaches the set temperature rise before the preset temperature rise time, closing the pump valve of the heating medium, when the timing reaches the preset temperature rise time, closing the pump valve of the heating medium and starting interval timing, and when the preset temperature rise interval time is reached, re-comparing the set temperature rise temperature with the measured temperature;
the heat exchange between the material and the cooling medium or heating medium takes place via cooling jackets or heating jackets which separate the material from the cooling medium or heating medium.
2. The method according to claim 1, wherein the pump valve comprises a pump valve, and the valve is an on-off control valve or a regulating valve.
3. The automatic material temperature control method according to claim 1, wherein the set temperature-rising temperature is less than or equal to the set temperature-falling temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911113244.XA CN110780693B (en) | 2019-11-14 | 2019-11-14 | Automatic material temperature control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911113244.XA CN110780693B (en) | 2019-11-14 | 2019-11-14 | Automatic material temperature control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110780693A CN110780693A (en) | 2020-02-11 |
| CN110780693B true CN110780693B (en) | 2022-03-22 |
Family
ID=69391106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911113244.XA Active CN110780693B (en) | 2019-11-14 | 2019-11-14 | Automatic material temperature control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110780693B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1967109A (en) * | 2005-11-17 | 2007-05-23 | 财团法人工业技术研究院 | Method and device for removing frost from storeroom of refrigerating device |
| CN101398246A (en) * | 2007-09-27 | 2009-04-01 | 株式会社东芝 | Refrigerator |
| CN103130927A (en) * | 2011-11-29 | 2013-06-05 | 中国石油化工股份有限公司 | Method and system for olefin polymerization temperature control |
| CN103752246A (en) * | 2014-01-23 | 2014-04-30 | 胡静静 | Temperature control system of reaction kettle |
| CN106285760A (en) * | 2016-08-28 | 2017-01-04 | 桂林市晶准测控技术有限公司 | A kind of underground mining environment monitoring system and method |
| CN206184428U (en) * | 2016-10-25 | 2017-05-24 | 华东理工大学工程设计研究院有限公司 | Reaction material's cooling control system |
| CN207691132U (en) * | 2018-01-15 | 2018-08-03 | 东莞台端电子有限公司 | With temperature controlled transmission line |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5634049A (en) * | 1979-08-28 | 1981-04-06 | Daikin Ind Ltd | Heater |
| JPS59183233A (en) * | 1983-04-04 | 1984-10-18 | Osaka Gas Co Ltd | Control system for cooling/heating devices |
| WO1991012756A1 (en) * | 1990-02-22 | 1991-09-05 | Horizons International Foods, Inc. | Apparatus for reheating french fries |
| CN101434421B (en) * | 2008-12-01 | 2012-01-11 | 深圳市好美水科技开发有限公司 | Heating means and heating arrangement for water electrolysis |
| CN102539309A (en) * | 2011-12-16 | 2012-07-04 | 广东电网公司电力科学研究院 | Metal material high-temperature water vapor oxidation experimental device |
| TWM450709U (en) * | 2012-11-13 | 2013-04-11 | Grand Mate Co Ltd | Digital gas pot heating device |
| CN104017476B (en) * | 2014-05-30 | 2016-02-24 | 百川化工(如皋)有限公司 | A kind of production method of 180 level polyurethane enamelled wire paints |
| CN105789622A (en) * | 2016-03-18 | 2016-07-20 | 中南大学 | Method for preparing anode material of lithium ion battery LiCo1/3Fe2/C/3PO4 |
| CN206542789U (en) * | 2017-03-16 | 2017-10-10 | 上海承欢轻工机械有限公司 | A kind of device processed again |
| CN110621174B (en) * | 2017-04-28 | 2023-02-28 | 深圳葭南科技有限公司 | Tobacco flue-curing device and heating control method |
-
2019
- 2019-11-14 CN CN201911113244.XA patent/CN110780693B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1967109A (en) * | 2005-11-17 | 2007-05-23 | 财团法人工业技术研究院 | Method and device for removing frost from storeroom of refrigerating device |
| CN101398246A (en) * | 2007-09-27 | 2009-04-01 | 株式会社东芝 | Refrigerator |
| CN103130927A (en) * | 2011-11-29 | 2013-06-05 | 中国石油化工股份有限公司 | Method and system for olefin polymerization temperature control |
| CN103752246A (en) * | 2014-01-23 | 2014-04-30 | 胡静静 | Temperature control system of reaction kettle |
| CN106285760A (en) * | 2016-08-28 | 2017-01-04 | 桂林市晶准测控技术有限公司 | A kind of underground mining environment monitoring system and method |
| CN206184428U (en) * | 2016-10-25 | 2017-05-24 | 华东理工大学工程设计研究院有限公司 | Reaction material's cooling control system |
| CN207691132U (en) * | 2018-01-15 | 2018-08-03 | 东莞台端电子有限公司 | With temperature controlled transmission line |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110780693A (en) | 2020-02-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20220042687A1 (en) | Controlled hydronic distribution system | |
| CN101539151B (en) | Method and device for controlling inverter compressor | |
| CN107101329B (en) | Air conditioner heating operation control method and control device | |
| CN105352239A (en) | Control method of electronic expansion valve of air conditioner | |
| CN108980441B (en) | Proportional electromagnetic valve driving method based on PWM | |
| CN103727677A (en) | Instant heating type water heater constant temperature control system and method | |
| WO2012146323A3 (en) | Method and system for the automatic hydraulic adjustment of radiators | |
| CN106766214A (en) | A kind of water temperature frequency modulation control method | |
| CN106839546B (en) | Varying capacity adjusts thermodynamics inverse circulation systerm control method for overheat | |
| CN110124594A (en) | Fine chemistry industry temperature of reaction kettle control method | |
| CN104141964A (en) | Air supply system and method of industrial furnace | |
| CN105091349A (en) | Outlet water temperature adjusting device, air energy water heater and automatic outlet water temperature adjusting method | |
| EP2910788B1 (en) | Method for controlling a pumping station within a fluid circulation system, related circulation system and pumping station for realizing said method | |
| CN110780693B (en) | Automatic material temperature control method | |
| CN113091260A (en) | Control method and device for air conditioner and air conditioner | |
| CN109539380A (en) | A kind of Teat pump boiler compressor frequency control method | |
| CN114397924B (en) | Intelligent regulation and control method for temperature of mass concrete | |
| CN114838530A (en) | Control method and device for air conditioner electronic expansion valve, air conditioner and storage medium | |
| CN108646808B (en) | Temperature control system and temperature control method of dyeing machine | |
| CN106286246B (en) | A kind of control method of compressor assembly | |
| CN107382045B (en) | Glass plate tempering process control method | |
| CN107500519B (en) | Glass plate tempering process control method | |
| CN103294081A (en) | Intelligent PID control system for roller temperature of multi-wire saw, and control method thereof | |
| KR102504881B1 (en) | Reactor temperature control method | |
| CN114632614B (en) | Automatic control system and method for warm grinding of coal mill |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |