CN106406380B - A kind of low-temperature heat kettle feed liquid control method for lowering temp - Google Patents
A kind of low-temperature heat kettle feed liquid control method for lowering temp Download PDFInfo
- Publication number
- CN106406380B CN106406380B CN201610850086.6A CN201610850086A CN106406380B CN 106406380 B CN106406380 B CN 106406380B CN 201610850086 A CN201610850086 A CN 201610850086A CN 106406380 B CN106406380 B CN 106406380B
- Authority
- CN
- China
- Prior art keywords
- temperature
- feed liquid
- low
- temperature heat
- heat kettle
- 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
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
- G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0006—Controlling or regulating processes
- B01J19/0013—Controlling the temperature of the process
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00049—Controlling or regulating processes
- B01J2219/00051—Controlling the temperature
- B01J2219/00074—Controlling the temperature by indirect heating or cooling employing heat exchange fluids
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
Abstract
The invention discloses a kind of low-temperature heat kettle feed liquid control method for lowering temp, acquire the technological temperature of feed liquid, the actual temperature of feed liquid, heating medium inlet temperature, the actual temperature of heat medium gap temperature and feed liquid in low-temperature heat kettle respectively first, and control the action of cold valves and hydrophone mixing valve in time when low-temperature heat kettle is in overtemperature state, make the temperature in low-temperature heat kettle keep stablizing；After production, host computer sends out feed liquid recycling signal, and control cold valves are opened, water and steam mixing device is adjusted to steam closed state, steam steam supply valve is simultaneously closed off, closes circulating pump, cooling water reclamation system is opened, after waiting feed temperatures to decline, waits for feed liquid recycling.The present invention can realize accurately controlling for feed temperature in low-temperature heat kettle production process, and the temperature of feed liquid is made to keep constant, while the fast cooling of feed liquid can be realized after low-temperature heat kettle completes production, improve production efficiency, improve product quality.
Description
Technical field
The present invention relates to low-temperature heat kettle control technology field more particularly to a kind of low-temperature heat kettle feed liquid cooling controlling parties
Method.
Background technology
The major function of low-temperature heat kettle is heated to feed liquid, but in the actual production process, heating object material
Temperature tend to exceed technological requirement, at this moment just need to cool down to feed liquid.Existing low-temperature heat kettle is all by cold
Water circulation system cools down to feed liquid, but the control process of this cool-down method is relatively coarse, lead to the temperature of feed liquid
It floats larger, not only reduces production effect, but also cause feed temperature uneven, product quality is caused to decline.
In addition, after production, recycling storage carried out to the feed liquid being not used, need to drop feed liquid in this way
Recycling stores after temperature processing, in case high temperature feed liquid is rotten.But existing low-temperature heat kettle is taken after production
The natural type of cooling cools down to the feed liquid being not used, and temperature fall time is long, seriously affects production efficiency.
Invention content
The purpose of the present invention is to provide a kind of low-temperature heat kettle feed liquid control method for lowering temp, can be given birth in low-temperature heat kettle
Accurately controlling for feed temperature is realized during production, so that the temperature of feed liquid is kept constant, while can be completed in low-temperature heat kettle
The fast cooling that feed liquid is realized after production, improves production efficiency, improves product quality.
To achieve the above object, the present invention adopts the following technical scheme that：
A kind of low-temperature heat kettle feed liquid control method for lowering temp, includes the following steps successively：
(1) the technological temperature T of feed liquid in upper computer control system setting low-temperature heat kettle is utilized0；
(2) the actual temperature T of feed liquid in temperature sensor acquisition low-temperature heat kettle is utilized, and by the technological temperature T of feed liquid0
And the actual temperature T input controllers of feed liquid are judged, as the actual temperature T ＞ T of feed liquid0At+2 DEG C, controller control at this time
The water valve that freezes is opened, and for adjustment hydrophone mixing valve to steam closed position, steam off intake valve closes circulating pump, to low temperature plus
Feed liquid in hot kettle cools down, while opening cooling water reclamation system, is recycled to the cooling water generated in cooling procedure,
Subsequently into step (3)；
(3) heating medium inlet temperature T is acquired in real time using temperature sensor1, heat medium gap temperature T2And feed liquid
Actual temperature T, work as T2-T1The actual temperature T ＜ T of 4 DEG C of ＞ and feed liquid0At+1 DEG C, cold valves are closed, the frequency of circulating pump is adjusted
Rate is to f2, and low-temperature heat kettle enters recurrent state at a slow speed, subsequently into step (4)；
(4) low-temperature heat kettle enters trigger after recurrent state at a slow speed, after delay time arrives, utilizes temperature sensor
Acquire the temperature T of recirculated water3, as the temperature T of recirculated water3＜ T0When, steam valve is opened, and adjust water and steam mixing device, makes heating
Medium inlet temperature keeps T1=T0+ 0.5 DEG C, circulating pump is also run with frequency f2, subsequently into step (5)；
(5) when the actual temperature T of feed liquid reaches T0At ± 1 DEG C, low-temperature heat kettle enters holding mode, and steam valve closes at this time
It closes, cold valves are closed, and controller control loop pump is also run with frequency f2, subsequently into step (6)；
(6) step (1) to step (5) is repeated, until production terminates, subsequently into step (7)；
(7) after producing, host computer sends out feed liquid recycling signal, and the cold valves of controller control at this time are opened, and water is adjusted
Vapour mixing arrangement simultaneously closes off steam steam supply valve to steam closed state, closes circulating pump, opens cooling water reclamation system, so
After enter step (8)；
(8) the actual temperature T of the temperature sensor real-time detecting material liquid and temperature T of cold water is utilized4, when the practical temperature of feed liquid
Spend T ＜ T4At+3 DEG C, Cold water tap is closed, starts circulating pump to recurrent state at a slow speed, subsequently into step (9)；
(9) circulating pump enters trigger after recurrent state at a slow speed, and delay time is shut down after, waits for feed liquid recycling.
In the step (4), the delay time of the low-temperature heat kettle is 25 seconds.
In the step (9), the delay time of circulating pump is 30 seconds.
The present invention is gone out by acquiring actual temperature, heating medium inlet temperature and the heat medium of feed liquid in low-temperature heat kettle
Mouth temperature controls the cold valves of low-temperature heat kettle by controller in conjunction with the technique initialization temperature of feed liquid in low-temperature heat kettle
With the opening and closing of steam inlet valve, realizes and the precision of each control assembly of system is controlled, make the feed temperature in low-temperature heat kettle
It keeps constant；After production, cold valves, and the temperature of the actual temperature of real-time detecting material liquid and cold water are opened immediately, when
When the actual temperature of feed liquid reaches setting value, cold valves are closed, can realize the fast cooling of feed liquid, improve production efficiency.This
Invention can realize automatically controlling for the process that cools of feed liquid, make cooling system safe and stable operation, to ensure
In process of production, the temperature of feed liquid is kept constant low-temperature heat kettle, and after ensureing production, the material in low-temperature heat kettle
Liquid cools down rapidly, not only greatly increases production efficiency, but also is effectively improved the quality of product.
Description of the drawings
Fig. 1 is the flow chart of the present invention.
Specific implementation mode
As shown in Figure 1, a kind of low-temperature heat kettle feed liquid control method for lowering temp of the present invention, includes following step successively
Suddenly：
(1) the technological temperature T of feed liquid in upper computer control system setting low-temperature heat kettle is utilized0；
(2) the actual temperature T of feed liquid in temperature sensor acquisition low-temperature heat kettle is utilized, and by the technological temperature T of feed liquid0
And the actual temperature T input controllers of feed liquid are judged, as the actual temperature T ＞ T of feed liquid0At+2 DEG C, you can think low temperature
Heating kettle is in overtemperature state, and the cold valves of controller control at this time are opened, and adjustment hydrophone mixing valve to steam closed position is closed
Steam inlet valve closes circulating pump, cools down to the feed liquid in low-temperature heat kettle, while opening cooling water reclamation system, right
The cooling water generated in cooling procedure is recycled, subsequently into step (3)；
Cooling water reclamation system is that this system is to realize environmental protection and saving, to the condensed water that this system operational process generates, or
The cooling water that cooling procedure generates is recycled, and the soft water that head factory is sent by pressurization recycles the device of pipe network, is low temperature
The existing apparatus of heating kettle, repeats no more.
(3) heating medium inlet temperature T is acquired in real time using temperature sensor1, heat medium gap temperature T2And feed liquid
Actual temperature T, work as T2-T1The actual temperature T ＜ T of 4 DEG C of ＞ and feed liquid0At+1 DEG C, cold valves are closed, the frequency of circulating pump is adjusted
Rate is to f2, and low-temperature heat kettle enters recurrent state at a slow speed, subsequently into step (4)；
Recurrent state is the natural mode of low-temperature heat kettle at a slow speed, is repeated no more.
(4) it is delayed 25 seconds, the temperature T of recirculated water is acquired using temperature sensor3, as the temperature T of recirculated water3＜ T0When, it beats
Steam valve is opened, and adjusts water and steam mixing device, heating medium inlet temperature is made to keep T1=T0+ 0.5 DEG C, circulating pump is also with f2's
Frequency is run, subsequently into step (5)；
Cooling water flows into cooling water reclamation system after by low-temperature heat kettle, flows into the water after cooling water reclamation system
For recirculated water.
(5) when the actual temperature T of feed liquid reaches T0At ± 1 DEG C, low-temperature heat kettle enters holding mode, and steam valve closes at this time
It closes, cold valves are closed, and circulating pump is run with f2 frequencies, subsequently into step (6)；
(6) step (1) to step (5) is repeated, until production terminates, subsequently into step (7)；
(7) after producing, host computer sends out feed liquid recycling signal, and the cold valves of controller control at this time are opened, and water is adjusted
Vapour mixing arrangement simultaneously closes off steam steam supply valve to steam closed state, closes circulating pump, opens cooling water reclamation system, so
After enter step (8)；
(8) the actual temperature T of the temperature sensor real-time detecting material liquid and temperature T of cold water is utilized4, when the practical temperature of feed liquid
Spend T ＜ T4At+3 DEG C, Cold water tap is closed, starts circulating pump to recurrent state at a slow speed, subsequently into step (9)；
(9) it is shut down after circulating pump is delayed 30 seconds, waits for feed liquid recycling.
The present invention can realize accurately controlling for feed temperature in low-temperature heat kettle production process, and the temperature of feed liquid is made to protect
Fast cooling that is constant, while can realizing feed liquid after low-temperature heat kettle completes production is held, production efficiency is improved, improves product
Quality.
Claims (3)
1. a kind of low-temperature heat kettle feed liquid control method for lowering temp, which is characterized in that include the following steps successively：
(1) the technological temperature T of feed liquid in upper computer control system setting low-temperature heat kettle is utilized0；
(2) the actual temperature T of feed liquid in temperature sensor acquisition low-temperature heat kettle is utilized, and by the technological temperature T of feed liquid0And material
The actual temperature T input controllers of liquid are judged, as the actual temperature T ＞ T of feed liquid0At+2 DEG C, controller control at this time is cold
Water valve is opened, adjustment water and steam mixing device to steam closed position, and steam off valve closes circulating pump, in low-temperature heat kettle
Feed liquid cool down, while opening cooling water reclamation system, the cooling water generated in cooling procedure recycled, then into
Enter step (3)；
(3) heating medium inlet temperature T is acquired in real time using temperature sensor1, heat medium gap temperature T2And the reality of feed liquid
Border temperature T, works as T2-T1The actual temperature T ＜ T of 4 DEG C of ＞ and feed liquid0At+1 DEG C, cold valves are closed, the frequency for adjusting circulating pump arrives
F2, low-temperature heat kettle enters recurrent state at a slow speed, subsequently into step (4)；
(4) low-temperature heat kettle enters trigger after recurrent state at a slow speed, after delay time arrives, is acquired using temperature sensor
The temperature T of recirculated water3, as the temperature T of recirculated water3＜ T0When, steam valve is opened, and adjust water and steam mixing device, makes heat medium
Inlet temperature keeps T1=T0+ 0.5 DEG C, circulating pump is also run with frequency f2, subsequently into step (5)；
(5) when the actual temperature T of feed liquid reaches T0At ± 1 DEG C, low-temperature heat kettle enters holding mode, and steam valve is closed at this time, cold
Water valve is closed, and controller control loop pump is also run with frequency f2, subsequently into step (6)；
(6) step (1) to step (5) is repeated, until production terminates, subsequently into step (7)；
(7) after producing, host computer sends out feed liquid recycling signal, and the cold valves of controller control at this time are opened, and adjustment steam is mixed
It attaches together and sets to steam closed state, simultaneously close off steam valve, close circulating pump, cooling water reclamation system is opened, subsequently into step
Suddenly (8)；
(8) the actual temperature T of the temperature sensor real-time detecting material liquid and temperature T of cold water is utilized4, as the actual temperature T ＜ of feed liquid
T4At+3 DEG C, Cold water tap is closed, starts circulating pump to recurrent state at a slow speed, subsequently into step (9)；
(9) circulating pump enters trigger after recurrent state at a slow speed, and delay time is shut down after, waits for feed liquid recycling.
2. a kind of low-temperature heat kettle feed liquid control method for lowering temp as described in claim 1, it is characterised in that：The step (4)
In, the delay time of the low-temperature heat kettle is 25 seconds.
3. a kind of low-temperature heat kettle feed liquid control method for lowering temp as claimed in claim 2, it is characterised in that：The step (9)
In, the delay time of circulating pump is 30 seconds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610850086.6A CN106406380B (en) | 2016-09-26 | 2016-09-26 | A kind of low-temperature heat kettle feed liquid control method for lowering temp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610850086.6A CN106406380B (en) | 2016-09-26 | 2016-09-26 | A kind of low-temperature heat kettle feed liquid control method for lowering temp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106406380A CN106406380A (en) | 2017-02-15 |
| CN106406380B true CN106406380B (en) | 2018-08-03 |
Family
ID=57996647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610850086.6A Active CN106406380B (en) | 2016-09-26 | 2016-09-26 | A kind of low-temperature heat kettle feed liquid control method for lowering temp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106406380B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110771941B (en) * | 2019-09-30 | 2021-09-21 | 江苏中烟工业有限责任公司 | Heating temperature control method for adjusting threshold value of material tank based on weight of spice liquid |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101866190A (en) * | 2010-07-02 | 2010-10-20 | 西安电炉研究所有限公司 | Temperature cascade PID (Proportion Integration Differentiation) control system of high-temperature high-pressure testing device and control method thereof |
| CN204730180U (en) * | 2015-05-29 | 2015-10-28 | 河南中烟工业有限责任公司 | A kind of low-temperature heat still system being provided with demineralized water retracting device |
| CN204746118U (en) * | 2015-06-05 | 2015-11-11 | 河南中烟工业有限责任公司 | Recess is around piece low temperature heating cauldron |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08299180A (en) * | 1995-05-11 | 1996-11-19 | Matsushita Electric Ind Co Ltd | Electric water heater |
| JP4785927B2 (en) * | 2005-09-27 | 2011-10-05 | クラスタル・テクノロジー（シェンジェン）カンパニー・リミテッド | Electric kettle control method |
-
2016
- 2016-09-26 CN CN201610850086.6A patent/CN106406380B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101866190A (en) * | 2010-07-02 | 2010-10-20 | 西安电炉研究所有限公司 | Temperature cascade PID (Proportion Integration Differentiation) control system of high-temperature high-pressure testing device and control method thereof |
| CN204730180U (en) * | 2015-05-29 | 2015-10-28 | 河南中烟工业有限责任公司 | A kind of low-temperature heat still system being provided with demineralized water retracting device |
| CN204746118U (en) * | 2015-06-05 | 2015-11-11 | 河南中烟工业有限责任公司 | Recess is around piece low temperature heating cauldron |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106406380A (en) | 2017-02-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104068460A (en) | Tobacco moisture content and temperature regulation control method | |
| CN104315683B (en) | Fuzzy PID (Proportion Integration Differentiation)-based water-cooled air conditioner regulation and control method | |
| CN106406380B (en) | A kind of low-temperature heat kettle feed liquid control method for lowering temp | |
| WO2021151393A1 (en) | Supercritical nitrogen quenching circulation cooling system for use in vacuum furnace | |
| EP3166421A1 (en) | Facility for thawing or tempering frozen food products | |
| DK201170659A (en) | Method and apparatus for producing a cooled hydrocarbon stream | |
| TWM564043U (en) | High-pressure liquid-state or supercritical-state quenching apparatus | |
| CN103382522A (en) | Method used for controlling roller rotary spray quenching technology | |
| CN106834634A (en) | Quenching experimental device and quenching assay method | |
| CN108050835A (en) | Continous way electric heating calcining kiln and temprature control method | |
| CN109316055A (en) | A kind of energy-saving heating means | |
| CN106403292B (en) | A kind of hot water circulating device with straightway pump | |
| CN206311986U (en) | Automatic temperature control apparatus | |
| CN202744524U (en) | White spirit cooler | |
| CN104129015B (en) | A kind of cold die heater of self-circulating wind | |
| CN106647854B (en) | A kind of control method for increasing substantially heating kettle feed liquid heating accuracy | |
| CN206109359U (en) | A steamed rice bed for rice wine manufacturing | |
| CN104807265A (en) | Magnetic refrigeration equipment and heat exchange liquid flow control method and control device thereof | |
| CN111637633A (en) | Control method for constant-temperature backwater of solid regenerative furnace | |
| CN202607910U (en) | Heating-plate temperature control device of flat-plate vulcanizing machine | |
| CN209179886U (en) | A kind of generator engine cylinder body | |
| CN208978314U (en) | Intelligent automatic-control temperature formula ageing treatment chamber | |
| CN202492547U (en) | Vacuum annealing furnace | |
| CN203829996U (en) | Automatic control device in production of epoxy plasticizer | |
| CN206173389U (en) | Isostatic pressing gas equipment of quenching |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |