CN112892298A - Leveling liquid preparation system and method - Google Patents
Leveling liquid preparation system and method Download PDFInfo
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- CN112892298A CN112892298A CN202110089657.XA CN202110089657A CN112892298A CN 112892298 A CN112892298 A CN 112892298A CN 202110089657 A CN202110089657 A CN 202110089657A CN 112892298 A CN112892298 A CN 112892298A
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- liquid
- base oil
- leveling
- desalted water
- preparation tank
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- 239000007788 liquid Substances 0.000 title claims abstract description 257
- 238000002360 preparation method Methods 0.000 title claims abstract description 91
- 238000000034 method Methods 0.000 title claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 145
- 239000002199 base oil Substances 0.000 claims abstract description 116
- 238000011033 desalting Methods 0.000 claims abstract description 39
- 239000003921 oil Substances 0.000 claims abstract description 32
- 238000009826 distribution Methods 0.000 claims abstract description 24
- 230000001186 cumulative effect Effects 0.000 claims description 11
- 238000012544 monitoring process Methods 0.000 abstract description 3
- 239000012530 fluid Substances 0.000 description 8
- 238000010612 desalination reaction Methods 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 238000003756 stirring Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005304 joining Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 238000000137 annealing Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
- B01F27/90—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with paddles or arms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/40—Mixing liquids with liquids; Emulsifying
- B01F23/43—Mixing liquids with liquids; Emulsifying using driven stirrers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/20—Measuring; Control or regulation
- B01F35/22—Control or regulation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
- B21B45/0239—Lubricating
- B21B45/0245—Lubricating devices
- B21B45/0248—Lubricating devices using liquid lubricants, e.g. for sections, for tubes
- B21B45/0251—Lubricating devices using liquid lubricants, e.g. for sections, for tubes for strips, sheets, or plates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
- B21B45/0269—Cleaning
- B21B45/0275—Cleaning devices
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
In the leveling liquid distribution system and method provided by the application, the system comprises a PLC (programmable logic controller), a liquid distribution tank, a desalting water pump and a base oil pump, a liquid level meter for monitoring the liquid level of the leveling liquid in the liquid distribution tank is arranged on the outer wall of the liquid distribution tank, a leveling liquid discharge valve is arranged at the bottom of the liquid distribution tank, the desalting water pump is communicated with a water outlet pipe, a desalting water flowmeter for collecting the flow of the desalting water is arranged on the water outlet pipe, correspondingly, the base oil pump is communicated with an oil outlet pipe, and a base oil flowmeter for collecting the flow of the base oil is arranged on the oil outlet. The reference volumes of the desalted water and the base oil which need to be added into the liquid preparation tank can be respectively calculated according to the target concentration and the target volume of the leveling liquid, the closing of the desalted water pump and the base oil pump is controlled according to the accumulated volumes of the desalted water and the base oil which are acquired by the desalted water flow meter and the base oil flow meter and the reference volumes of the desalted water and the base oil, the stable ratio of the desalted water and the base oil can be ensured, and therefore the stable concentration of the leveling liquid is ensured.
Description
Technical Field
The application relates to the technical field of strip steel production, in particular to a leveling liquid preparation system and a leveling liquid preparation method.
Background
Leveling is an important link in the production process of cold-rolled strip steel, namely, the steel coil after cold rolling and annealing is rolled at a low reduction rate at normal temperature. In the leveling process, leveling liquid is sprayed to different parts of the roller through a leveling liquid nozzle to remove residues on the surface of the strip steel and prevent rust, so that the cleanliness, the lubricity and the rust prevention capability of the strip steel are ensured, the service life of the roller is prolonged, and the rolling power and the strip quality of the leveling machine are improved.
The leveling liquid is a mixed liquid prepared by mixing desalted water and base oil according to a certain proportion in a liquid preparation tank, and has excellent antirust, lubricating and cleaning performances, and the concentration of the leveling liquid directly influences the quality of a finished product of a strip. However, in actual production, the operator manually controls the volumes of the desalted water and the base oil added into the liquid preparation tank according to the working experience, so that the concentration of the leveling liquid is unstable, and the leveling quality of the cold-rolled strip is affected.
Disclosure of Invention
The application provides a leveling liquid preparation system and a leveling liquid preparation method, which aim to solve the technical problem of unstable concentration of a leveling liquid caused by unstable proportioning of desalted water and base oil in the prior art.
In order to solve the technical problem, the embodiment of the application discloses the following technical scheme:
in a first aspect, the present application provides a leveling liquid dispensing system, comprising:
a PLC controller;
the bottom of the liquid preparation tank is provided with a leveling liquid discharge valve which is electrically connected with the PLC;
the desalting water pump is communicated with a water outlet pipe, a desalting water flowmeter is arranged on the water outlet pipe, and the water outlet pipe is communicated with an opening of the liquid distribution tank;
the base oil pump is communicated with an oil outlet pipe, a base oil flowmeter is arranged on the oil outlet pipe, and the oil outlet pipe is communicated with an opening of the liquid distribution tank;
the liquid level meter is arranged on the outer wall of the liquid preparation tank;
the liquid distribution tank, the desalted water pump, the base oil pump, the desalted water flow meter, the base oil flow meter and the liquid level meter are all electrically connected with the PLC.
In a second aspect, the present application provides a leveling liquid preparation method using the above leveling liquid preparation system, comprising:
calculating a desalted water reference volume and a base oil reference volume according to the target concentration and the target volume of the leveling liquid;
when the liquid level value of the leveling liquid in the liquid preparation tank reaches a low liquid level point, closing a leveling liquid drain valve;
when the liquid level value of the leveling liquid in the liquid preparation tank does not reach the low liquid level point, opening a leveling liquid drain valve;
after the leveling liquid drain valve is closed, starting a desalting water pump and a basic oil pump;
judging whether to close the desalted water pump according to the desalted water accumulated volume and the desalted water reference volume in the liquid preparation tank collected by the desalted water flow meter;
when the cumulative volume of the desalted water in the liquid preparation tank is smaller than the reference volume of the desalted water, the desalted water pump is not closed;
when the cumulative volume of the desalted water in the liquid preparation tank is not less than the reference volume of the desalted water, closing the desalted water pump;
judging whether to close the base oil pump according to the accumulated volume of the base oil in the liquid preparation tank and the reference volume of the base oil, which are acquired by the base oil flowmeter;
when the accumulated volume of the base oil in the liquid preparation tank is smaller than the reference volume of the base oil, the base oil pump is not closed;
and when the accumulated volume of the base oil in the liquid preparation tank is not less than the reference volume of the base oil, closing the base oil pump.
Compared with the prior art, the beneficial effect of this application is:
it can be seen from the above technical scheme that in the leveling liquid distribution system and method that this application provided, wherein the system includes the PLC controller, joins in marriage the fluid reservoir, the demineralized water pump, basic oil pump, locate the level gauge of monitoring leveling liquid level in it on joining in marriage the outer wall of fluid reservoir, the bottom of joining in marriage the fluid reservoir simultaneously is equipped with leveling liquid flowing back valve, the demineralized water pump intercommunication has the outlet pipe, be provided with the demineralized water flowmeter of gathering the demineralized water flow on the outlet pipe, correspondingly, basic oil pump intercommunication has the oil outlet pipe, be provided with the basic oil flowmeter of gathering basic oil flow on the oil outlet pipe.
Reference volumes of the desalted water and the base oil which need to be added into the liquid preparation tank can be respectively calculated according to the target concentration and the target volume of the leveling liquid, the desalted water and the base oil are injected into the liquid preparation tank according to the reference volumes, and the concentration of the leveling liquid finally obtained through stirring can be ensured at the target concentration.
When the liquid level meter monitors that the liquid level of the leveling liquid in the liquid preparation tank reaches a low liquid level point, the liquid level meter transmits a signal to the PLC, the PLC sends an instruction for closing a leveling liquid discharge valve after receiving the signal, and the leveling liquid discharge valve is closed to stop outward spraying of the leveling liquid, so that the normal work of the liquid preparation tank is ensured; the method comprises the steps that after a leveling liquid drain valve is closed, an instruction for starting a desalting water pump and a base oil pump is sent, desalted water and base oil are injected into a liquid distribution tank, a desalted water flow meter and a base oil flow meter can respectively collect the accumulated volumes of the injected desalted water and base oil, the accumulated volume values of the desalted water and the base oil are sent to a PLC (programmable logic controller), the PLC judges whether to close the desalting water pump and the base oil pump or not according to the accumulated volume values of the desalted water and the base oil and reference volume values of the desalted water and the base oil, and when the accumulated volume of the desalted water in the liquid distribution tank is smaller than a reference volume of the; when the cumulative volume of the desalted water in the liquid preparation tank is not less than the reference volume of the desalted water, closing the desalted water pump; when the accumulated volume of the base oil in the liquid preparation tank is smaller than the reference volume of the base oil, the base oil pump is not closed; when the accumulated volume of the base oil in the liquid preparation tank is not less than the reference volume of the base oil, closing the base oil pump; the proportion of the desalted water and the base oil can be ensured to be stable by injecting the desalted water and the base oil with a certain volume into the liquid preparation tank, so that the concentration of the leveling liquid is ensured to be stable, and the problem of the quality of a finished product of a cold-rolled strip caused by unstable concentration of the leveling liquid is solved.
Drawings
In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a leveling liquid dispensing system according to an embodiment of the present disclosure;
fig. 2 is a flow control diagram corresponding to the leveling liquid preparation method provided in the embodiment of the present application.
Detailed Description
In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In a first aspect, the embodiment of the application provides a leveling liquid preparation system; referring to fig. 1, fig. 1 shows a schematic structural diagram of a leveling liquid distribution system provided in an embodiment of the present application. As shown in fig. 1, the leveling liquid preparation system provided by the present application includes:
a leveling liquid discharge valve 3 is arranged at the bottom of the liquid preparation tank 4, and the leveling liquid discharge valve 3 is electrically connected with the PLC; the desalination water and the base oil are injected into the liquid preparation tank 4, then the leveling liquid with a certain concentration can be prepared by stirring the stirring device 5 in the liquid preparation tank 4, the liquid preparation tank 4 is used as a generation container of the leveling liquid, the bottom of the leveling liquid discharge valve 3 is provided, the leveling liquid discharge valve 3 is opened, the leveling liquid in the liquid preparation tank 4 can be discharged for a leveling process, and the leveling liquid discharge valve 3 can be an electric valve and is electrically connected with a PLC (programmable logic controller).
The desalting water pump 1 is communicated with a water outlet pipe, desalting water is injected into the liquid distribution tank 4 through the water outlet pipe, a desalting water flow meter 7 is arranged on the water outlet pipe, the water outlet pipe is communicated with an opening of the liquid distribution tank 4, the desalting water flow meter 7 can be used for collecting the accumulated flow of the desalting water injected into the liquid distribution tank 4, and the accumulated flow can be an accumulated volume value.
The basic oil pump 2 is communicated with an oil outlet pipe, basic oil is injected into the liquid distribution tank 4 through the oil outlet pipe, a basic oil flow meter 8 is arranged on the oil outlet pipe, the oil outlet pipe is communicated with an opening of the liquid distribution tank 4, the basic oil flow meter 8 can be used for collecting the accumulated flow of the basic oil injected into the liquid distribution tank 4, and the accumulated flow can be an accumulated volume value.
The liquid level meter 6 is arranged on the outer wall of the liquid preparation tank 4 and can be used for monitoring the liquid level of the leveling liquid in the liquid preparation tank 4, an allowable high liquid level point in the liquid preparation tank 4 is A, the allowable high liquid level point is the highest liquid level point of the liquid preparation tank and can be a solvent of the liquid preparation tank 4, when the flow rate of the leveling liquid exceeds the high liquid level point A, the corresponding desalting water pump 1 and the base oil pump 2 need to be closed, and the desalting water and the base oil are stopped from being continuously injected into the liquid preparation tank 4; the low liquid point allowed in the liquid preparation tank 4 is B, the lowest liquid level of the leveling liquid allowed in the liquid preparation tank 4 is the lowest liquid level of the leveling liquid allowed in the liquid preparation tank 4, the liquid level of the leveling liquid in the liquid preparation tank 4 cannot be lower than the low liquid point B, and the normal work of the liquid preparation tank 4 can be influenced when the low liquid point B is lower than the low liquid point B.
The liquid preparation tank 4, the desalted water pump 1, the base oil pump 2, the desalted water flow meter 7, the base oil flow meter 8 and the liquid level meter 6 are all electrically connected with the PLC.
When the liquid level meter 6 monitors that the liquid level of the leveling liquid in the liquid preparation tank 4 reaches a low liquid level point, the liquid level meter 6 transmits the signal to the PLC controller, the PLC controller can send an instruction for closing the leveling liquid preparation valve at the moment, after the leveling liquid preparation valve is closed, the desalting water pump 1 and the basic oil pump 2 can be started simultaneously, one can be started independently and then the other can be started, and the desalting water and the basic oil are respectively injected into the liquid preparation tank 4.
In this application embodiment, through the target concentration and the target volume with level liquid send the PLC controller, the PLC controller calculates the reference volume of the desalination water and the base oil that need pour into in the fluid distribution tank 4 through the formula that prestores, the target concentration of level liquid here is the ideal concentration of the level liquid that the level process needs, the target volume can be for the volume of fluid distribution tank 4, the reference volume of desalination water and base oil is the ideal volume of the desalination water and the base oil that need pour into in the fluid distribution tank 4, pour into according to the reference volume of desalination water and base oil, can guarantee that the ratio of desalination water and base oil is certain, thereby the configuration concentration of level liquid is stable. The PLC calculating the reference volumes of desalted water and base oil includes:
inputting a target volume V of the leveling liquid to be prepared to a PLC controllerTotalThe input target concentration of the leveling liquid to be prepared is
The highest concentration allowed by the production process is
Target concentration
Should be less than the maximum concentration allowed by the production process
The actual water adding volume of the desalted water pump 1 after operation is VAct WaterThe actual oiling volume of the base oil pump 2 after operation is VOil ActThe reference value of desalted water calculated by PLC is VWater RefBase oil reference value VOil RefWherein:
Vwater Ref+VOil Ref＝V Total ②
Formulas (c) and (d) can be derived according to the formulas (c) and (c), and are respectively calculation formulas of the reference volumes of the desalted water and the base oil.
The desalted water flow meter 7 and the base oil flow meter 8 can monitor the accumulated volume of the desalted water and the base oil injected into the liquid preparation tank 4 respectively, the desalted water flow meter 7 and the base oil flow meter 8 transmit the accumulated volume value of the desalted water and the base oil to the PLC, and the PLC compares the accumulated volume of the desalted water and the base oil with the reference volume of the desalted water and the base oil, so that an instruction for closing the desalted water pump 1 and the base oil pump 2 is sent out.
When the cumulative volume of the desalted water in the liquid preparation tank 4 is smaller than the reference volume of the desalted water, the desalted water pump 1 is not closed;
when the cumulative volume of the desalted water in the liquid preparation tank 4 is not less than the reference volume of the desalted water, the desalted water pump 1 is closed;
when the accumulated volume of the base oil in the liquid preparation tank 4 is smaller than the reference volume of the base oil, the base oil pump 2 is not closed;
and when the accumulated volume of the base oil in the liquid preparation tank 4 is not less than the reference volume of the base oil, the base oil pump 2 is closed.
In the embodiment of the present application, the liquid level meter 6 can monitor whether the leveling liquid in the liquid preparation tank 4 reaches the high liquid level point of the liquid preparation tank 4, and when the leveling liquid flow in the liquid preparation tank 4 reaches the high liquid level point of the liquid preparation tank 4, the desalting water pump 1 and the base oil pump 2 need to be closed regardless of the relationship between the desalting water accumulated volume and the desalting water reference volume and the relationship between the base oil accumulated volume and the base oil reference volume.
In this application embodiment, the system still includes alarm device, alarm device can be the LED lamp, alarm device is connected with the PLC controller electricity, the PLC controller is connected with level gauge 6 electricity, when level gauge 6 monitors to join in marriage the liquid level of leveling liquid in the fluid reservoir 4 and reaches the low liquid position point of joining in marriage the fluid reservoir 4, give the PLC controller with this signal transmission, the PLC controller sends alarm command to alarm device, alarm device sends alarm signal, can send alarm signal with the form of scintillation for the LED lamp.
Whether the desalting water pump 1 and the base oil pump 2 are closed or not is controlled, so that the running time of the desalting water pump 1 and the base oil pump 2 can be controlled, the volume and the proportion of the desalting water and the base oil which are injected into the liquid preparation tank 4 are controlled, and the desalting water and the base oil with a certain proportion are stirred by the stirring device 5 to finally obtain the leveling liquid with a certain concentration.
In a second aspect, the present application further provides a leveling liquid dispensing method using the above leveling liquid dispensing system, specifically referring to fig. 2, including:
calculating a desalted water reference volume and a base oil reference volume according to the target concentration and the target volume of the leveling liquid;
when the liquid level value of the leveling liquid in the liquid preparation tank 4 reaches a low liquid level point, the leveling liquid drain valve 3 is closed;
when the liquid level value of the leveling liquid in the liquid preparation tank 4 does not reach the low liquid level point, a leveling liquid drain valve 3 is opened;
after the leveling liquid drain valve 3 is closed, the desalting water pump 1 and the basic oil pump 2 are started;
judging whether to close the desalting water pump 1 according to the accumulated volume of the desalting water in the liquid preparation tank 4 and the reference volume of the desalting water collected by the desalting water flowmeter 7;
when the cumulative volume of the desalted water in the liquid preparation tank 4 is smaller than the reference volume of the desalted water, the desalted water pump 1 is not closed;
when the cumulative volume of the desalted water in the liquid preparation tank 4 is not less than the reference volume of the desalted water, the desalted water pump 1 is closed;
judging whether to close the base oil pump 2 according to the accumulated volume of the base oil in the liquid preparation tank 4 collected by the base oil flowmeter 8 and the reference volume of the base oil;
when the accumulated volume of the base oil in the liquid preparation tank 4 is smaller than the reference volume of the base oil, the base oil pump 2 is not closed;
and when the accumulated volume of the base oil in the liquid preparation tank 4 is not less than the reference volume of the base oil, the base oil pump 2 is closed.
The liquid preparation method in the embodiment of the present application is not particularly described with reference to fig. 2.
In the embodiment of the application, when the liquid level meter 6 monitors that the liquid level of the leveling liquid in the liquid preparation tank 4 reaches the low liquid level point of the liquid preparation tank 4, the signal is transmitted to the PLC controller, the PLC controller sends an alarm instruction to the alarm device, and the alarm device sends an alarm signal which can be sent to the LED lamp in a flashing mode; when the liquid level value of the leveling liquid in the liquid preparation tank 4 does not reach the low liquid level point, no alarm signal is sent out.
In the embodiment of the application, when the level value of the leveling liquid in the liquid preparation tank 4 reaches a high level point, the desalting water pump 1 and the base oil pump 2 are closed. When the leveling liquid flow rate in the tank 4 reaches the high liquid level point of the tank 4, the desalting water pump 1 and the base oil pump 2 need to be shut down regardless of the relationship between the desalting water cumulative volume and the desalting water reference volume and the relationship between the base oil cumulative volume and the base oil reference volume.
The reference volumes of the desalted water and the base oil which need to be added into the liquid preparation tank 4 can be respectively calculated according to the target concentration and the target volume of the leveling liquid, the desalting water pump 1 and the base oil pump 2 are controlled to be closed according to the accumulated volumes of the desalted water and the base oil which are acquired by the desalted water flowmeter 7 and the base oil flowmeter 8 and are injected into the liquid preparation tank 4 and the reference volumes of the desalted water and the base oil, and therefore the stable ratio of the desalted water and the base oil can be guaranteed, and the stable concentration of the leveling liquid is guaranteed.
Since the above embodiments are all described by referring to and combining with other embodiments, the same portions are provided between different embodiments, and the same and similar portions between the various embodiments in this specification may be referred to each other. And will not be described in detail herein.
Claims (6)
1. A leveling liquid dispensing system, comprising:
a PLC controller;
the bottom of the liquid preparation tank is provided with a leveling liquid discharge valve which is electrically connected with the PLC;
the desalting water pump is communicated with a water outlet pipe, a desalting water flowmeter is arranged on the water outlet pipe, and the water outlet pipe is communicated with an opening of the liquid distribution tank;
the base oil pump is communicated with an oil outlet pipe, a base oil flowmeter is arranged on the oil outlet pipe, and the oil outlet pipe is communicated with an opening of the liquid distribution tank;
the liquid level meter is arranged on the outer wall of the liquid preparation tank;
the liquid distribution tank, the desalted water pump, the base oil pump, the desalted water flow meter, the base oil flow meter and the liquid level meter are all electrically connected with the PLC.
2. The leveling liquid dispensing system of claim 1 wherein a stirrer is provided in the dispensing tank.
3. The leveling liquid dispensing system of claim 1 wherein the leveling liquid in the dispensing tank has a high liquid level point and a low liquid level point.
4. A leveling liquid dispensing method using the leveling liquid dispensing system of any one of claims 1-3, said method comprising:
calculating a desalted water reference volume and a base oil reference volume according to the target concentration and the target volume of the leveling liquid;
when the liquid level value of the leveling liquid in the liquid preparation tank reaches a low liquid level point, closing a leveling liquid drain valve;
when the liquid level value of the leveling liquid in the liquid preparation tank does not reach the low liquid level point, opening a leveling liquid drain valve;
after the leveling liquid drain valve is closed, starting a desalting water pump and a basic oil pump;
judging whether to close the desalted water pump according to the desalted water accumulated volume and the desalted water reference volume in the liquid preparation tank collected by the desalted water flow meter;
when the cumulative volume of the desalted water in the liquid preparation tank is smaller than the reference volume of the desalted water, the desalted water pump is not closed;
when the cumulative volume of the desalted water in the liquid preparation tank is not less than the reference volume of the desalted water, closing the desalted water pump;
judging whether to close the base oil pump according to the accumulated volume of the base oil in the liquid preparation tank and the reference volume of the base oil, which are acquired by the base oil flowmeter;
when the accumulated volume of the base oil in the liquid preparation tank is smaller than the reference volume of the base oil, the base oil pump is not closed;
and when the accumulated volume of the base oil in the liquid preparation tank is not less than the reference volume of the base oil, closing the base oil pump.
5. The leveling liquid dispensing method according to claim 4, further comprising:
when the liquid level value of the leveling liquid in the liquid preparation tank reaches a low liquid level point, an alarm signal is sent out;
when the liquid level value of the leveling liquid in the liquid preparation tank does not reach the low liquid level point, no alarm signal is sent out.
6. The leveling liquid dispensing method according to claim 4, further comprising:
and when the level value of the leveling liquid in the liquid preparation tank reaches a high liquid level point, closing the desalting water pump and the basic oil pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110089657.XA CN112892298A (en) | 2021-01-22 | 2021-01-22 | Leveling liquid preparation system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CA1139399A (en) * | 1978-10-03 | 1983-01-11 | Walter A. Wilson | Method of and apparatus for controlling the concentration and stability of an emulsion |
| CN101574633A (en) * | 2009-06-11 | 2009-11-11 | 上海宝钢工程技术有限公司 | Method for compounding concentration of emulsion used for rolling mill and compounding device |
| CN108144543A (en) * | 2016-12-06 | 2018-06-12 | 上海梅山钢铁股份有限公司 | Step-by-step movement concentration liquid mixing system and with liquid method |
| CN111085553A (en) * | 2019-11-05 | 2020-05-01 | 莱芜钢铁集团电子有限公司 | Leveling liquid supply system |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1139399A (en) * | 1978-10-03 | 1983-01-11 | Walter A. Wilson | Method of and apparatus for controlling the concentration and stability of an emulsion |
| CN101574633A (en) * | 2009-06-11 | 2009-11-11 | 上海宝钢工程技术有限公司 | Method for compounding concentration of emulsion used for rolling mill and compounding device |
| CN108144543A (en) * | 2016-12-06 | 2018-06-12 | 上海梅山钢铁股份有限公司 | Step-by-step movement concentration liquid mixing system and with liquid method |
| CN111085553A (en) * | 2019-11-05 | 2020-05-01 | 莱芜钢铁集团电子有限公司 | Leveling liquid supply system |
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