CN106406380A - Feed fluid cooling control method for low-temperature heating kettle - Google Patents
Feed fluid cooling control method for low-temperature heating kettle Download PDFInfo
- Publication number
- CN106406380A CN106406380A CN201610850086.6A CN201610850086A CN106406380A CN 106406380 A CN106406380 A CN 106406380A CN 201610850086 A CN201610850086 A CN 201610850086A CN 106406380 A CN106406380 A CN 106406380A
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- temperature
- low
- feed liquid
- steam
- feed fluid
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- 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
Abstract
The invention discloses a feed fluid cooling control method for a low-temperature heating kettle. The feed fluid cooling control method comprises the steps of: firstly, acquiring processing temperature and actual temperature of a feed fluid in the low-temperature heating kettle, heating medium inlet temperature and heating medium overflow opening temperature, and controlling actions of a cold water valve and a water device mixing valve timely when the low-temperature heating kettle is in an over-temperature state, so as to keep temperature in the low-temperature heating kettle stable; and sending a feed fluid recovery signal by an upper machine after the production is finished, controlling the cold water valve to open, adjusting a water and steam mixing device to be in a steam closing state, closing a steam supply valve and a circulating pump, opening a cooling water recovery system, and waiting for recovery of the feed liquid after the temperature of the feed fluid decreases. The feed fluid cooling control method can achieve precise control of feed fluid temperature during the production process of the low-temperature heating kettle, maintains the temperature of the feed fluid constant, can realize rapid cooling of the feed fluid after the production of the low-temperature heating kettle is finished, improves production efficiency and improves 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 party
Method.
Background technology
The major function of low-temperature heat kettle is that feed liquid is heated, but in actual production process, heated material
Temperature tend to exceed technological requirement, be at this moment accomplished by feed liquid is lowered the temperature.Existing low-temperature heat kettle is all by cold
Water circulation system feed liquid is lowered the temperature, but the control process of this cool-down method is relatively coarse, leads to the temperature of feed liquid
Float larger, not only reduce and produce effect, and cause feed temperature uneven, cause product quality to decline.
Additionally, after production terminates, so need feed liquid is dropped to not carrying out reclaiming storage using complete feed liquid
After temperature is processed, recycling stores, in order to avoid high temperature feed liquid goes bad.But existing low-temperature heat kettle is all to take after production terminates
, to not lowered the temperature using complete feed liquid, temperature fall time is long, has a strong impact on production efficiency for the natural type of cooling.
Content of the invention
It is an object of the invention to provide a kind of low-temperature heat kettle feed liquid control method for lowering temp, can give birth in low-temperature heat kettle
Realize the precise control of feed temperature during product, make the temperature of feed liquid keep constant, can complete in low-temperature heat kettle simultaneously
The fast cooling of feed liquid, improve production efficiency, improve product quality is realized after production.
For achieving 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, comprises the following steps successively：
(1) upper computer control system is utilized to set the technological temperature T of feed liquid in low-temperature heat kettle0；
(2) temperature sensor is utilized to gather actual temperature T of feed liquid in low-temperature heat kettle, and the technological temperature T by feed liquid0
And the actual temperature T input controller of feed liquid is judged, as the actual temperature T ＞ T of feed liquid0When+2 DEG C, now controller control
Refrigeration water valve is opened, adjustment hydrophone mixing valve to steam closed position, steam off intake valve, close circulating pump, to low temperature plus
Feed liquid in hot kettle is lowered the temperature, and opens cooling water reclamation system simultaneously, the cooling water producing in cooling procedure is reclaimed,
Subsequently into step (3)；
(3) utilize temperature sensor Real-time Collection heating medium inlet temperature T1, heating medium gap temperature T2And feed liquid
Actual temperature T, work as T2-T1The actual temperature T ＜ T of 4 DEG C of ＞ and feed liquid0When+1 DEG C, close cold valves, the frequency of adjustment circulating pump
To f2, low-temperature heat kettle enters recurrent state at a slow speed to rate, subsequently into step (4)；
(4) low-temperature heat kettle enters trigger after recurrent state at a slow speed, delay time to afterwards, using temperature sensor
Temperature T of collection recirculated water3, when temperature T of recirculated water3＜ T0When, open steam valve, and adjust water and steam mixing device, make 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 actual temperature T of feed liquid reaches T0When ± 1 DEG C, low-temperature heat kettle enters holding mode, and now steam valve closes
Close, cold valves are closed, controller controls circulating pump also to run with frequency f2, subsequently into step (6)；
(6) repeat step (1), to step (5), terminates, subsequently into step (7) up to producing；
(7) after production terminates, host computer sends feed liquid and reclaims signal, and now controller controls cold valves to open, and adjusts water
Vapour mixing arrangement, to steam closed mode, simultaneously closes off steam steam supply valve, closes circulating pump, opens cooling water reclamation system, so
Enter step (8) afterwards；
(8) actual temperature T of temperature sensor real-time detection feed liquid and temperature T of cold water are utilized4, when the actual temperature of feed liquid
Degree T ＜ T4When+3 DEG C, close Cold water tap, start 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 arrives and shuts down afterwards, waits feed liquid recovery.
In described step (4), the delay time of described low-temperature heat kettle is 25 seconds.
In described step (9), the delay time of circulating pump is 30 seconds.
The present invention is gone out by gathering the actual temperature of feed liquid in low-temperature heat kettle, heating medium inlet temperature and heating medium
Mouth temperature, in conjunction with the technique initialization temperature of feed liquid in low-temperature heat kettle, controls the cold valves of low-temperature heat kettle by controller
With the opening and closing of steam inlet valve, realize the precision control to each control assembly of system, make the feed temperature in low-temperature heat kettle
Keep constant；After production terminates, open cold valves, and the temperature of the actual temperature of real-time detection feed liquid and cold water immediately, when
When the actual temperature of feed liquid reaches setting value, close cold valves, be capable of the fast cooling of feed liquid, improve production efficiency.This
Invention is capable of automatically controlling of the process that cools of feed liquid, makes cooling system safe and stable operation, thus ensureing
In process of production, the temperature of feed liquid keeps constant to low-temperature heat kettle, and the material after ensureing that production terminates, in low-temperature heat kettle
Liquid cools down rapidly, not only greatly increases production efficiency, and is effectively improved the quality of product.
Brief description
Fig. 1 is the flow chart of the present invention.
Specific embodiment
As shown in figure 1, a kind of low-temperature heat kettle feed liquid control method for lowering temp of the present invention, include following step successively
Suddenly：
(1) upper computer control system is utilized to set the technological temperature T of feed liquid in low-temperature heat kettle0；
(2) temperature sensor is utilized to gather actual temperature T of feed liquid in low-temperature heat kettle, and the technological temperature T by feed liquid0
And the actual temperature T input controller of feed liquid is judged, as the actual temperature T ＞ T of feed liquid0When+2 DEG C, you can think low temperature
Heating kettle is in overtemperature state, and now controller controls cold valves to open, and adjustment hydrophone mixing valve, to steam closed position, cuts out
Steam inlet valve, closes circulating pump, the feed liquid in low-temperature heat kettle is lowered the temperature, and opens cooling water reclamation system simultaneously, right
The cooling water producing in cooling procedure is reclaimed, subsequently into step (3)；
Cooling water reclamation system is the system is to realize environmental protection and saving, the condensed water that the system running is produced, or
The cooling water that cooling procedure produces is reclaimed, and recycles the device of pipe network by the soft water that head factory is sent in pressurization, is low temperature
The existing apparatus of heating kettle, repeat no more.
(3) utilize temperature sensor Real-time Collection heating medium inlet temperature T1, heating medium gap temperature T2And feed liquid
Actual temperature T, work as T2-T1The actual temperature T ＜ T of 4 DEG C of ＞ and feed liquid0When+1 DEG C, close cold valves, the frequency of adjustment circulating pump
To f2, low-temperature heat kettle enters recurrent state at a slow speed to rate, subsequently into step (4)；
Recurrent state is the natural mode of low-temperature heat kettle at a slow speed, repeats no more.
(4) time delay 25 seconds, gather temperature T of recirculated water using temperature sensor3, when temperature T of recirculated water3＜ T0When, beat
Drive steam valve, and adjust water and steam mixing device, make heating medium inlet temperature keep T1=T0+ 0.5 DEG C, circulating pump is also with f2's
Frequency is run, subsequently into step (5)；
Cooling water is flowing into cooling water reclamation system after low-temperature heat kettle, flows into the water after cooling water reclamation system
For recirculated water.
(5) when actual temperature T of feed liquid reaches T0When ± 1 DEG C, low-temperature heat kettle enters holding mode, and now steam valve closes
Close, cold valves are closed, circulating pump is run with f2 frequency, subsequently into step (6)；
(6) repeat step (1), to step (5), terminates, subsequently into step (7) up to producing；
(7) after production terminates, host computer sends feed liquid and reclaims signal, and now controller controls cold valves to open, and adjusts water
Vapour mixing arrangement, to steam closed mode, simultaneously closes off steam steam supply valve, closes circulating pump, opens cooling water reclamation system, so
Enter step (8) afterwards；
(8) actual temperature T of temperature sensor real-time detection feed liquid and temperature T of cold water are utilized4, when the actual temperature of feed liquid
Degree T ＜ T4When+3 DEG C, close Cold water tap, start circulating pump to recurrent state at a slow speed, subsequently into step (9)；
(9) circulating pump time delay is shut down for 30 seconds afterwards, waits feed liquid to reclaim.
The present invention can realize the precise control of feed temperature in low-temperature heat kettle production process, so that the temperature of feed liquid is protected
Hold constant, the fast cooling of feed liquid, improve production efficiency can be realized simultaneously after low-temperature heat kettle completes to produce, improve product
Quality.
Claims (3)
1. a kind of low-temperature heat kettle feed liquid control method for lowering temp is it is characterised in that comprise the following steps successively：
(1) upper computer control system is utilized to set the technological temperature T of feed liquid in low-temperature heat kettle0；
(2) temperature sensor is utilized to gather actual temperature T of feed liquid in low-temperature heat kettle, and the technological temperature T by feed liquid0And material
The actual temperature T input controller of liquid is judged, as the actual temperature T ＞ T of feed liquid0When+2 DEG C, now controller control is cold
Water valve is opened, adjustment hydrophone mixing valve to steam closed position, and steam off intake valve cuts out circulating pump, to low-temperature heat kettle
Interior feed liquid is lowered the temperature, and opens cooling water reclamation system simultaneously, the cooling water producing is reclaimed, then in cooling procedure
Enter step (3)；
(3) utilize temperature sensor Real-time Collection heating medium inlet temperature T1, heating 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 liquid0When+1 DEG C, close cold valves, the frequency of adjustment 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, and delay time, to afterwards, is gathered using temperature sensor
Temperature T of recirculated water3, when temperature T of recirculated water3＜ T0When, open steam valve, and adjust water and steam mixing device, make 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 actual temperature T of feed liquid reaches T0When ± 1 DEG C, low-temperature heat kettle enters holding mode, and now steam valve cuts out, cold
Water valve cuts out, and controller controls circulating pump also to run with frequency f2, subsequently into step (6)；
(6) repeat step (1), to step (5), terminates, subsequently into step (7) up to producing；
(7) after production terminates, host computer sends feed liquid and reclaims signal, and now controller controls cold valves to open, and adjustment steam mixes
Attach together and put to steam closed mode, simultaneously close off steam steam supply valve, close circulating pump, open cooling water reclamation system, Ran Houjin
Enter step (8)；
(8) actual temperature T of temperature sensor real-time detection feed liquid and temperature T of cold water are utilized4, as the actual temperature T ＜ of feed liquid
T4When+3 DEG C, close Cold water tap, start 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 arrives and shuts down afterwards, waits feed liquid recovery.
2. as claimed in claim 1 a kind of low-temperature heat kettle feed liquid control method for lowering temp it is characterised in that：Described step (4)
In, the delay time of described low-temperature heat kettle is 25 seconds.
3. as claimed in claim 2 a kind of low-temperature heat kettle feed liquid control method for lowering temp it is characterised in that：Described 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 |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610850086.6A CN106406380B (en) | 2016-09-26 | 2016-09-26 | A kind of low-temperature heat kettle feed liquid control method for lowering temp |
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| Publication Number | Publication Date |
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| CN106406380A true CN106406380A (en) | 2017-02-15 |
| CN106406380B CN106406380B (en) | 2018-08-03 |
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| 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 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110771941A (en) * | 2019-09-30 | 2020-02-11 | 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 (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08299180A (en) * | 1995-05-11 | 1996-11-19 | Matsushita Electric Ind Co Ltd | Electric water heater |
| WO2007036066A1 (en) * | 2005-09-27 | 2007-04-05 | Crastal Technology (Shenzhen) Co., Ltd | A control method of electric heating kettle |
| 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 |
-
2016
- 2016-09-26 CN CN201610850086.6A patent/CN106406380B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08299180A (en) * | 1995-05-11 | 1996-11-19 | Matsushita Electric Ind Co Ltd | Electric water heater |
| WO2007036066A1 (en) * | 2005-09-27 | 2007-04-05 | Crastal Technology (Shenzhen) Co., Ltd | A control method of electric heating kettle |
| 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 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110771941A (en) * | 2019-09-30 | 2020-02-11 | 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 |
| 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 |
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| CN106406380B (en) | 2018-08-03 |
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