CN113249563B - Washing heat treatment automatic control system suitable for corrosion foil - Google Patents
Washing heat treatment automatic control system suitable for corrosion foil Download PDFInfo
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- CN113249563B CN113249563B CN202110599109.1A CN202110599109A CN113249563B CN 113249563 B CN113249563 B CN 113249563B CN 202110599109 A CN202110599109 A CN 202110599109A CN 113249563 B CN113249563 B CN 113249563B
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D11/00—Process control or regulation for heat treatments
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- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
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- Cleaning By Liquid Or Steam (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
The invention discloses a water-washing heat treatment automatic control system suitable for a corrosion foil, which comprises the corrosion foil, a water-washing system used for washing the corrosion foil and a heat treatment system used for treating the washed corrosion foil; the water washing system comprises a water washing tank; the heat treatment system comprises ceramic rollers which are arranged in pairs, corrosion foils pass through a gap between the two ceramic rollers, and a water through hole is formed in the center of each ceramic roller; still include hot water recycling system, this hot water recycling system includes high temperature resistant water pipe, hot water valve pumping system, and the limbers that washing system passes through high temperature resistant water pipe and hot water valve pumping system and ceramic rod forms the circulation return circuit. The invention utilizes the hot water recycling system and the pure water adding system to recycle the heat of the heat treatment, so that the water temperature reaches the requirement of the water washing process; and a temperature control system does not need to be designed independently, so that the operation cost is reduced, and the resources are greatly saved.
Description
Technical Field
The invention belongs to the field of electrical automation control, and particularly relates to an automatic control system for water washing heat treatment of a corrosion foil.
Background
In the production process of the corrosion foil, a series of electrochemical corrosion is needed to change the raw material aluminum foil into the corrosion foil. At the end of the production of the corrosion foil, water washing and heat treatment processes are needed, wherein the water washing process is used for washing away chloride ions and oil stains on the surface of the corrosion foil in the previous process, the heat treatment process is used for drying moisture on the surface of the corrosion foil, and the corrosion foil is quenched at high temperature, so that the formation of an oxide layer on the surface of the corrosion foil is accelerated, and the surface strength is improved. The washing process is that the etched foil is through a wash bowl of filling with the pure water, through production and experimental demonstration, when the pure water is in 50~60 ℃ of temperature, relatively wash away chloridion and the greasy dirt on etched foil surface easily, for making the pure water reach preset temperature, need design temperature control system alone, use heat exchanger and circulating pump recirculated circulation inslot pure water repeatedly, utilize steam washing temperature rise, the cooling water cooling, make the pure water reach the technological requirement, this scheme operation cost is higher, and the wash bowl volume is less, it is comparatively extravagant to design temperature control system alone. The heat treatment process is that the etched foil passes through a heat treatment furnace which is horizontally arranged after the water washing process, the heat treatment furnace is internally provided with heating pipes, the drying and quenching effects are realized through the high temperature emitted by the heating pipes, and the temperature of the heat treatment process is required to be above 160 ℃. Because the length of the heat treatment furnace is generally more than 2 meters, a squirrel cage roller is usually only arranged at the inlet and the outlet of the heat treatment furnace, and no fixed roller is arranged in the heat treatment furnace, the corrosion foil is difficult to pass flatly in the process of passing through the heat treatment furnace, the drying and quenching effects are influenced, if the fixed roller is arranged in the heat treatment furnace, the fixed roller must resist high temperature, and must be safe and reliable, and common materials cannot meet the requirements easily.
Disclosure of Invention
The invention aims to overcome the defects and provide the automatic control system for the water washing heat treatment, which can improve the heat treatment effect, reduce the temperature control energy consumption and is easy to realize and suitable for the corrosion foil.
The purpose of the invention is realized by the following technical scheme:
an automatic control system for water washing heat treatment of an etched foil comprises the etched foil, a water washing system for cleaning the etched foil and a heat treatment system for treating the cleaned etched foil; the water washing system comprises a water washing tank; the heat treatment system comprises ceramic rollers which are arranged in pairs, corrosion foils pass through a gap between the two ceramic rollers, and a water through hole is formed in the center of each ceramic roller; still include hot water recycling system, this hot water recycling system includes high temperature resistant water pipe, hot water valve pumping system, and the limbers that washing system passes through high temperature resistant water pipe and hot water valve pumping system and ceramic rod forms the circulation return circuit.
Furthermore, the automatic control system for water washing heat treatment of the corrosion foil further comprises a pure water adding system, and the pure water recycling system is connected with the hot water recycling system through a high-temperature-resistant water pipe and a pure water valve and pump system.
Further, water washing heat treatment automatic control system suitable for corrosion paper tinsel, the pure water addition system still includes temperature detection controlling means, temperature detection controlling means includes the temperature detection changer, temperature controller, temperature detection changer and temperature controller electric connection, the temperature detection changer is used for gathering the inside temperature of wash bowl, temperature controller and pure water valve water pump system electric connection.
Furthermore, the automatic control system for the water washing heat treatment of the corrosion foil comprises a hot water valve and a water pump system, wherein the hot water valve and the water pump system comprise an overflow manual valve, a water pump and a hot water manual adding valve; the pure water valve and water pump system comprises an automatic pure water adding valve; and a liquid level switch is arranged in front of the overflow manual valve, and the water pump is forcibly turned off if the liquid level in the rinsing bath is lower than the liquid level switch.
Furthermore, the automatic control system for water washing heat treatment of the etched foil is characterized in that 4 ceramic rollers are provided, two ends of each ceramic roller are respectively provided with a ball bearing, the ball bearings are fixedly arranged on the outer wall of the heat treatment furnace, every two ceramic rollers form a group, each group of ceramic rollers is arranged on the same vertical plane, and the surfaces of the roller bodies of the two ceramic rollers are arranged in a close fit manner.
Furthermore, the automatic control system for the water washing heat treatment of the corrosion foil further comprises a heat treatment furnace, wherein a plurality of heating pipes are respectively installed at the top end and the bottom end inside the heat treatment furnace, and the heating temperature inside the heat treatment furnace is lower than 200 ℃; the washing medium in the washing tank is pure water, and the temperature of the pure water is 50-60 ℃.
Furthermore, the automatic control system for the water washing heat treatment of the etched foil comprises a water washing tank, a tank inlet top roller, a tank outlet top roller and a bottom roller; the device also comprises a stainless steel squirrel cage roller, wherein the groove outlet top roller, the squirrel cage roller and the central line of each group of ceramic rollers are positioned on the same horizontal plane.
Furthermore, the automatic control system for water washing heat treatment of the etched foil further comprises a pure water draining system, wherein the pure water draining system comprises an automatic draining valve, a liquid level detection transmitter and a liquid level controller; the pure water downward discharging system connects the rinsing bath with the automatic downward discharging valve through a high temperature resistant water pipe, wherein the liquid level detection transmitter is used for collecting the liquid level in the rinsing bath and is electrically connected with the liquid level controller, and the liquid level controller is electrically connected with the automatic downward discharging valve.
Furthermore, the automatic control system for water washing heat treatment of etched foil, the pure water adding system uses a negative feedback closed loop regulation mode, and the closed loop control transfer function is as follows:
the temperature detection transmitter and the temperature controller are integrated in a functional module of a Programmable Logic Controller (PLC), and flow control is carried out by controlling an automatic pure water adding valve.
Furthermore, the automatic control system for water washing heat treatment of etched foil uses a negative feedback closed loop regulation mode, and the closed loop control transfer function is as follows:
the liquid level detection transmitter and the liquid level controller are integrated in a functional module of the Programmable Logic Controller (PLC), and the liquid level is controlled by controlling an automatic lower discharge valve.
In summary, compared with the prior art, the invention has the following advantages:
the hot water recycling system and the pure water adding system are utilized to recycle heat of heat treatment, so that the water temperature meets the requirement of a water washing process; a temperature control system does not need to be designed independently, so that the operation cost is reduced, and the resources are greatly saved;
meanwhile, the heat treatment effect of the corrosion foil is improved, and the water washing heating energy consumption and the water consumption per unit are reduced;
the surface flatness of the etched foil is remarkably improved.
Drawings
FIG. 1 is a schematic flow diagram of the present invention;
FIG. 2 is a schematic view of the structure of the heat treatment furnace of the present invention;
reference numbers in the figures: 1-etching the foil; 2-a rinsing bath; 3-entering a groove top roller; 4, discharging the groove and jacking the roller; 5-bottom roll; 6-heat treatment furnace; 7-heating a tube; 8-a ceramic roller; 9-central axis of ceramic roller; 10-water through holes; 11-a ball bearing; 12-squirrel cage rollers; 13-overflow manual valve; 14-a water pump; 15-hot water manual addition valve; 16-an automatic pure water adding valve; 17-temperature detection transmitter; 18-a temperature controller; 19-automatic lower discharge valve; 20-a liquid level detection transmitter; 21-liquid level controller.
Detailed Description
For the purpose of enhancing the understanding of the present invention, the present invention will be further described in detail with reference to the following examples and the accompanying drawings, which are only used for explaining the present invention and are not to be construed as limiting the scope of the present invention.
One embodiment of an automatic control system for water washing and heat treatment of an etched foil as shown in fig. 1 and 2 includes an etched foil 1, a water washing tank 2, a heat treatment furnace 6, a ceramic roller 8, a squirrel cage roller 12, a hot water recycling system, a pure water addition system, and a pure water discharge system. Wash bowl 2 includes wash bowl 2, advances groove top roller 3, goes out groove top roller 4, bottom roll 5, heat treatment furnace 6 includes heat treatment furnace 6, heating pipe 7, ceramic roller 8 includes ceramic roller 8, ceramic roller center pin 9, limbers 10, ball bearing 11, hot water recycling system includes overflow manual valve 13, water pump 14, the manual valve 15 that adds of hot water, pure water addition system includes that the pure water is from pure waterThe automatic adding valve 16, the temperature detection transmitter 17 and the temperature controller 18 are arranged, the pure water downward discharging system comprises an automatic downward discharging valve 19, a liquid level detection transmitter 20 and a liquid level controller 21, the water washing medium in the water washing tank 2 is pure water, the temperature of the pure water is generally 50-60 ℃, the material of the tank inlet top roller 3, the tank outlet top roller 4 and the bottom roller 5 is polypropylene plastic, the top end and the bottom end in the heat treatment furnace 6 are respectively provided with a plurality of heating pipes 7, the heating temperature in the heat treatment furnace 6 is generally lower than 200 ℃, the total number of the ceramic rollers 8 is 4, two ends of each ceramic roller 8 are respectively provided with a ball bearing 11, the ball bearings 11 are fixedly arranged on the outer wall of the heat treatment furnace 6, every two ceramic rollers 8 are in one group, each group of ceramic rollers 8 is arranged on the same vertical plane, the surfaces of the two ceramic rollers 8 are tightly attached together, the corrosion foil 1 passes through the central gap of the two groups of ceramic rollers 8, the squirrel-cage roller 12 is made of stainless steel, the hot water recycling system is formed by connecting a rinsing tank 2, an overflow manual valve 13, a water pump 14, a limber hole 10 at the center of a ceramic roller central shaft 9 and a hot water manual adding valve 15 together through a high-temperature resistant water pipe, wherein, a water through hole 10 at the center of a central shaft 9 of the ceramic roller is used for water inlet from one end and water outlet from the other end, the interior of the roller body of the ceramic roller 8 is of a hollow structure, the pure water adding system connects the rinsing bath 2, the pure water automatic adding valve 16 and the hot water manual adding valve 15 together through a high temperature resistant water pipe, wherein the temperature detection transmitter 17 is used for collecting the internal temperature of the rinsing bath 2 and is electrically connected with the temperature controller 18, the temperature controller 18 is electrically connected to the automatic pure water adding valve 16, the pure water adding system uses a negative feedback closed loop regulation mode, and the closed loop control transfer function is as follows:
wherein t is the collected temperature, K is the system gain, the general control range is 5-20, the function operation can be carried out by a programmable controller (PLC), the temperature detection transmitter 17 and the temperature controller 18 are generally integrated in a functional module of the PLC, the flow control is carried out by controlling the automatic pure water adding valve 16, and the pure water discharging system connects the rinsing bath 2 and the automatic discharging valve 19 through a high-temperature resistant water pipeTogether, wherein the liquid level detection transmitter 20 is used for collecting the liquid level inside the rinsing bath 2 and is electrically connected with the liquid level controller 21, the liquid level controller 21 is electrically connected with the automatic lower discharge valve 19, the pure water lower discharge system uses a negative feedback closed loop regulation mode, and the closed loop control transfer function is as follows:
wherein s is for gathering the liquid level, and K is system gain, and general control range is 5~20, can carry out the function operation by programming controller (PLC), liquid level detection changer 20 and liquid level controller 21 are generally integrated in the functional module of programming controller (PLC), carry out liquid level control through controlling automatic lower valve 19, install the liquid level switch before the manual valve 13 of overflow, if the liquid level in the wash bowl 2 is less than the liquid level switch, then force to close water pump 14, prevent the evacuation.
The use principle is as follows: as shown in fig. 1, the etched foil 1 passes through the top entry roll 3, the bottom roll 5, and the top exit roll 4 in this order, and then the water washing step is completed. Then the heat treatment process is finished by passing through a heat treatment furnace 6 with two groups of ceramic rollers 8 inside and finally passing through a squirrel cage roller 12 at the outlet of the heat treatment furnace 6. Two sets of ceramic rollers 8 inside the heat treatment furnace 6 can enable the corrosion foil 1 to pass through the heat treatment furnace 6 smoothly, and the heat treatment effect and the surface flatness of the corrosion foil 1 are improved. The inside hollow structure that is of ceramic roller 8 roll body, at the actual motion in-process, through opening the manual valve 13 of overflow above wash bowl 2, after the extraction of water pump 14, with the pure water in wash bowl 2, through the one end limbers 10 of ceramic roller center pin 9, flow in ceramic roller 8 inside to flow out by the limbers 10 of the other end, this process not only plays the effect of cooling for ceramic roller 8, but also makes the pure water intensifies. The heated pure water flows through the high-temperature-resistant pipeline, flows through the hot water manual adding valve 15, is mixed with normal-temperature pure water flowing in through the pure water automatic adding valve 16, then flows into the washing tank 2 through the pipeline, the water temperature of the mixed pure water is controlled by the pure water adding system, the control system detects the temperature of tank liquor in the washing tank 2 in real time, and the opening degree of the pure water automatic adding valve 16 is adjusted through negative feedback closed loop, so that the inflow water temperature can meet the technological requirements of the washing tank 2. The hot water recycling system uses the heat of the heat treatment furnace 6 for heating the water supply washing tank 2, and simultaneously heats overflow pure water in the washing tank 2 and then flows back to the washing tank 2, so that the heating energy consumption and the water consumption are greatly reduced. In order to ensure that the liquid level of the rinsing bath 2 cannot overflow out of the notch, the automatic lower-discharge valve 19 is installed at the bottom of the rinsing bath 2, the control system detects the liquid level in the rinsing bath 2 in real time through the control of a pure water lower-discharge system, and the opening degree of the automatic lower-discharge valve 19 is adjusted through a negative feedback closed loop, so that the liquid level of the bath liquid is ensured to meet the normal use requirement.
The pure water adding system disclosed by the invention uses a negative feedback closed-loop regulation mode, and through tests and production demonstration, the closed-loop control transfer function of the pure water adding system is suitably as follows:
wherein t is the collected temperature, K is the system gain, the general control range is 5-20, the control model is a second-order control system, and the peak time t of the dynamic performance of the temperature can be ensuredpLess than or equal to 1.5s, and adjusting the time tsThe model has the advantages that the time is less than or equal to 2.5s, the overshoot sigma% =16.3%, the defect of insufficient system stability caused by open-loop control is effectively overcome, the transfer function of the model has no zero point, the output stability of the model is superior to that of traditional proportional-derivative control, and meanwhile, the model is used for controlling the temperature, and the temperature has hysteresis, so that the requirement on rapidity control is not high. The pure water discharge system of the invention uses a negative feedback closed loop regulation mode, and the closed loop control transfer function is suitable as follows through experiments and production demonstration:
wherein s is the collected liquid level, K is the system gain, the general control range is 5-20, the control model is a second-order control system, and the peak time t of the dynamic performance of the liquid level can be ensuredpLess than or equal to 0.5s, and adjusting the time tsLess than or equal to 1s, overshoot sigma% =16.3%, effectively compensate the shortcoming of insufficient system stationarity that open loop control leads to, because this model is used for controlling the liquid level, there is volatility in the liquid level, so through adjusting the K value, the K value is bigger, response speed is faster, peak time tpThe smaller the overshoot σ%, the lower the stationarity, and the motionThe state adjustment can realize relatively quick and stable control, and when the liquid level fluctuation is large, the closed loop zero point of a control function can be increased, the response speed is accelerated, and the control requirement is met.
By adopting the automatic control system for the water washing heat treatment of the etched foil, the heat treatment effect of the etched foil is improved, the water washing heating energy consumption and the water consumption are reduced, and the surface flatness of the etched foil is obviously improved.
Claims (6)
1. The utility model provides a washing heat treatment automatic control system suitable for corrosion paper tinsel which characterized in that: comprises an etched foil (1), a water washing system for cleaning the etched foil, and a heat treatment system for treating the cleaned etched foil; the water washing system comprises a water washing tank (2); the heat treatment system comprises ceramic rollers (8) which are arranged in pairs, corrosion foils pass through a gap between the two ceramic rollers, and a water through hole (10) is formed in the center of each ceramic roller; the ceramic rod water washing system comprises a ceramic rod, a ceramic water pump, a water inlet pipe, a ceramic water outlet pipe, a ceramic; the system also comprises a pure water adding system, and the pure water adding system is connected with the hot water recycling system through a high-temperature-resistant water pipe and a pure water valve and pump system; the pure water adding system also comprises a temperature detection control device, the temperature detection control device comprises a temperature detection transmitter (17) and a temperature controller (18), the temperature detection transmitter is electrically connected with the temperature controller, the temperature detection transmitter is used for collecting the internal temperature of the rinsing bath, and the temperature controller is electrically connected with the pure water valve water pump system; the hot water valve and water pump system comprises an overflow manual valve (13), a water pump (14) and a hot water manual adding valve (15); the pure water valve and water pump system comprises an automatic pure water adding valve (16); a liquid level switch is arranged in front of the overflow manual valve, and if the liquid level in the rinsing bath is lower than the liquid level switch, the water pump is forcibly turned off; the ceramic roller (8) has 4, and every ceramic roller both ends respectively have a ball bearing (11), and ball bearing is fixed to be set up in heat treatment furnace (6) outer wall, and every two ceramic rollers are a set of, and every ceramic roller of group is installed on same vertical plane, and the setting is hugged closely on two ceramic roller body surfaces.
2. The automatic control system for water washing heat treatment of etched foil according to claim 1, wherein: the heat treatment system also comprises a heat treatment furnace (6), wherein a plurality of heating pipes are respectively arranged at the top end and the bottom end inside the heat treatment furnace, and the heating temperature inside the heat treatment furnace is lower than 200 ℃; the washing medium in the washing tank is pure water, and the temperature of the pure water is 50-60 ℃.
3. The automatic control system for water washing heat treatment of etched foil according to claim 2, wherein: the water washing system comprises a tank top roller (3), a tank outlet top roller (4) and a bottom roller (5); the device also comprises a stainless steel squirrel cage roller (12), wherein the groove outlet top roller, the squirrel cage roller and the central line of each group of ceramic rollers are positioned on the same horizontal plane.
4. The automatic control system for water washing heat treatment of etched foil according to claim 3, wherein: the device also comprises a pure water lower discharge system, wherein the pure water lower discharge system comprises an automatic lower discharge valve (19), a liquid level detection transmitter (20) and a liquid level controller (21); the pure water downward discharging system connects the rinsing bath with the automatic downward discharging valve through a high temperature resistant water pipe, wherein the liquid level detection transmitter is used for collecting the liquid level in the rinsing bath and is electrically connected with the liquid level controller, and the liquid level controller is electrically connected with the automatic downward discharging valve.
5. The automatic control system for water washing heat treatment of etched foil according to claim 4, wherein: the pure water adding system uses a negative feedback closed-loop adjusting mode, and the closed-loop control transfer function of the pure water adding system is as follows:
wherein t is the collected temperature, K is the system gain, the control range is 5-20, and the temperature can be controlled by a Programmable Logic Controller (PLC)And (4) performing line function operation, wherein the temperature detection transmitter (17) and the temperature controller (18) are integrated in a functional module of a Programmable Logic Controller (PLC), and flow control is performed by controlling the automatic pure water adding valve (16).
6. The automatic control system for water washing heat treatment of etched foil according to claim 5, wherein: the pure water lower discharge system uses a negative feedback closed loop regulation mode, and the closed loop control transfer function of the pure water lower discharge system is as follows:
the liquid level detection transmitter and the liquid level controller are integrated in a functional module of the Programmable Logic Controller (PLC), and the liquid level is controlled by controlling an automatic lower discharge valve.
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| CN202110599109.1A CN113249563B (en) | 2021-05-31 | 2021-05-31 | Washing heat treatment automatic control system suitable for corrosion foil |
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| CN114046643B (en) * | 2021-11-04 | 2023-03-24 | 盐城工学院 | Dry-wet separation preparation equipment for electrode foil experiment and preparation method thereof |
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