CN114210746B - Method for cooling equipment in hot rolled strip steel coiling area - Google Patents
Method for cooling equipment in hot rolled strip steel coiling area Download PDFInfo
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- CN114210746B CN114210746B CN202111390677.7A CN202111390677A CN114210746B CN 114210746 B CN114210746 B CN 114210746B CN 202111390677 A CN202111390677 A CN 202111390677A CN 114210746 B CN114210746 B CN 114210746B
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- circulating water
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- 238000001816 cooling Methods 0.000 title claims abstract description 110
- 238000000034 method Methods 0.000 title claims abstract description 35
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 32
- 239000010959 steel Substances 0.000 title claims abstract description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 121
- 238000005507 spraying Methods 0.000 claims abstract description 60
- 238000004804 winding Methods 0.000 claims abstract description 38
- 230000007704 transition Effects 0.000 claims abstract description 19
- 239000007788 liquid Substances 0.000 claims description 55
- 239000007921 spray Substances 0.000 claims description 25
- 238000001802 infusion Methods 0.000 claims description 10
- 230000000694 effects Effects 0.000 abstract description 5
- 239000000498 cooling water Substances 0.000 description 24
- 238000002347 injection Methods 0.000 description 17
- 239000007924 injection Substances 0.000 description 17
- 238000010586 diagram Methods 0.000 description 4
- 238000005096 rolling process Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 238000002788 crimping Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
Classifications
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- 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
- B21B45/0203—Cooling
- B21B45/0209—Cooling devices, e.g. using gaseous coolants
- B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
- B21B45/0218—Cooling devices, e.g. using gaseous coolants using liquid coolants, 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
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
-
- 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
- B21B45/0203—Cooling
- B21B45/0209—Cooling devices, e.g. using gaseous coolants
- B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
- B21B45/0233—Spray nozzles, Nozzle headers; Spray systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D1/00—Devices using naturally cold air or cold water
- F25D1/02—Devices using naturally cold air or cold water using naturally cold water, e.g. household tap water
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D23/00—General constructional features
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Abstract
The invention discloses a method applied to equipment cooling in a hot-rolled strip steel coiling area, which belongs to the technical field of equipment cooling in the hot-rolled strip steel coiling area and comprises the steps of conveying first turbid circulating water to a second nozzle, a third nozzle and a fifth nozzle, cooling an upper pinch roll through the second nozzle, cooling a lower pinch roll through the third nozzle and cooling a press roll through the fifth nozzle; conveying the first turbid circulating water to a seventh nozzle, and cooling the outer ring of the steel coil and the winding drum through the seventh nozzle; delivering the first turbid circulating water to a sixth nozzle, and cooling the auxiliary winding roller through a second spraying component; delivering second turbid circulating water to a plurality of first nozzles, and cooling the entrance of the pinch roll through the plurality of first nozzles; and conveying the first turbid circulating water to a first spraying component and an eighth nozzle, cooling the feeding roller through the first spraying component, and cooling the transition roller way through the eighth nozzle. The invention achieves the technical effect of saving water resources.
Description
Technical Field
The invention belongs to the technical field of equipment cooling in a hot-rolled strip steel coiling area, and particularly relates to a method applied to equipment cooling in a hot-rolled strip steel coiling area.
Background
The hot rolled strip steel refers to strips and plates produced in a hot rolling mode, a plurality of coiling machines in a coiling area of a hot continuous rolling strip steel factory are positioned at the tail end of a laminar flow cooling roller way after finish rolling, and the rolled hot strip steel is tightly and completely coiled into a steel coil in a good coil shape.
At present, in the existing cooling technology of hot rolled strip coiling area equipment, the total cooling water amount is obtained by adding the maximum water consumption of each coiling machine, and then the water of the cooling water amount is conveyed to a plurality of coiling machines through a conveying pipeline according to the total cooling water amount obtained by adding, so as to provide cooling water for the coiling area equipment. However, in the case of using a plurality of reels alternately, for example, when 3 reels are arranged, only 1 reel is in an operating state, and the other 2 reels are in a system working condition of a state to be coiled, and the total amount of cooling water obtained by adding up the maximum water consumption of the 3 reels is supplied, so that the supplied water amount is larger than the actual water consumption of the equipment in the coiling area, and water resources are wasted.
In summary, in the existing cooling technology of the hot rolled strip coiling area equipment, the technical problem of wasting water resources exists.
Disclosure of Invention
The invention aims to solve the technical problem of wasting water resources.
In order to solve the technical problems, the invention provides a method for cooling equipment applied to a hot rolled strip coiling area, which comprises the following steps: the first turbid circulating water is conveyed to a second nozzle, a third nozzle and a fifth nozzle, the upper pinch roll is cooled through the second nozzle, the lower pinch roll is cooled through the third nozzle, and the press roll is cooled through the fifth nozzle; conveying the first turbid circulating water to a seventh nozzle, and cooling the outer ring of the steel coil and the winding drum through the seventh nozzle; delivering the first turbid circulating water to a sixth nozzle, and cooling the auxiliary winding roller through a second spraying component; delivering second turbid circulating water to a plurality of first nozzles, and cooling the entrance of the pinch roll through the plurality of first nozzles; and conveying the first turbid circulating water to a first spraying component and an eighth nozzle, cooling the feeding roller through the first spraying component, and cooling the transition roller way through the eighth nozzle.
Further, the pressure of the first turbid circulating water is 0.4MPa to 0.6MPa; the pressure of the second turbid circulating water is 0.9MPa to 1.0MPa.
Further, the cooling of the auxiliary winding roller by the second spraying component comprises: and cooling the auxiliary winding roller through a first sixth nozzle, a second sixth nozzle and a third sixth nozzle in the second spraying component.
Further, the cooling of the feed roller by the first spraying part includes: and cooling the feeding roller through a first fourth nozzle and a second fourth nozzle in the first spraying component.
Further, the method further comprises: installing the first flowmeter on a pipeline between the second stop valve and the second electromagnetic pneumatic valve; the second flowmeter is arranged on a pipeline between the fourth stop valve and the third electromagnetic pneumatic valve; installing a third flowmeter on the pipeline between the eighth stop valve and the sixth nozzle; the fourth flowmeter is arranged on a pipeline between the ninth stop valve and the fifth electromagnetic pneumatic valve; installing a fifth flow meter on the conduit between the tenth shut-off valve and the eighth nozzle; the first submersible pump is arranged in the pit, and the second submersible pump is arranged in the pit.
Further, the method further comprises: the liquid level meter is arranged in the pit and is provided with an extremely low position, a high position and an extremely high position.
Further, the method further comprises: when the liquid level in the pit is lower than the extremely low level, an alarm is given and the first submersible pump and the second submersible pump are closed.
Further, the method further comprises: when the liquid level in the pit is lower than the low level and the liquid level in the pit is higher than the extremely low level, the alarm is closed, and the first submersible pump and the second submersible pump are closed.
Further, the method further comprises: when the liquid level in the pit is lower than the high level and the liquid level in the pit is higher than the high level, the alarm is closed, the first submersible pump is started, and the second submersible pump is closed.
Further, the method further comprises: when the liquid level in the pit is higher than the extremely high level, alarming is carried out, and the first submersible pump and the second submersible pump are started.
The beneficial effects are that:
the invention provides a method for cooling equipment in a hot rolled strip steel coiling area, which is characterized in that first turbid circulating water is conveyed to a second nozzle, a third nozzle and a fifth nozzle, an upper pinch roll is cooled through the second nozzle, a lower pinch roll is cooled through the third nozzle, and a press roll is cooled through the fifth nozzle; conveying the first turbid circulating water to a seventh nozzle, and cooling the outer ring of the steel coil and the winding drum through the seventh nozzle; delivering the first turbid circulating water to a sixth nozzle, and cooling the auxiliary winding roller through a second spraying component; delivering second turbid circulating water to a plurality of first nozzles, and cooling the entrance of the pinch roll through the plurality of first nozzles; and conveying the first turbid circulating water to a first spraying component and an eighth nozzle, cooling the feeding roller through the first spraying component, and cooling the transition roller way through the eighth nozzle. In the process of alternately using a plurality of coiling machines, when the upper pinch roll and the lower pinch roll operate and strip steel passes through, the second nozzle cools the upper pinch roll, the third nozzle cools the lower pinch roll and the fifth nozzle cools the press roll. The seventh nozzle cools the outer ring of the coil when the coiling machine is in a manual or automatic mode and the coiling is completed and the coiling drum is running, and the seventh nozzle cools the coiling drum after the coil is discharged and when the movable support of the coiling drum is closed. The second spray member cools the auxiliary roll after the roll is removed and the movable support of the roll is closed and the auxiliary roll is operated adjacent the roll. And cooling the pinch roll inlet through a plurality of first nozzles to spray turbid circulating water directly sideways onto the strip surface at the pinch roll inlet. The first spraying part cools the feeding roller, the eighth spraying nozzle cools the transition roller way, and then the cooling water consumption provided for the coiling area equipment can be reduced, and water resources are saved. Thereby achieving the technical effect of saving water resources.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a system for cooling a hot strip coiling plant according to an embodiment of the present invention;
FIG. 2 is a schematic diagram II of a system for cooling a hot strip coiling zone apparatus according to an embodiment of the present invention;
FIG. 3 is a flow chart of a method for cooling equipment applied to a hot rolled strip coiling area according to an embodiment of the invention.
Detailed Description
The invention discloses a method applied to equipment cooling in a hot rolled strip coiling area, which comprises the steps of conveying first turbid circulating water to a second nozzle 5, a third nozzle 14 and a fifth nozzle 18, cooling an upper pinch roll 34 through the second nozzle 5, cooling a lower pinch roll 37 through the third nozzle 14 and cooling a press roll 35 through the fifth nozzle 18; the first turbid circulating water is conveyed to a seventh nozzle 23, and the outer ring of the steel coil and the winding drum 42 are cooled through the seventh nozzle 23; delivering the first turbid circulating water to a sixth nozzle, and cooling the auxiliary winding roller 40 by a second spraying part; delivering second turbid circulating water to a plurality of first nozzles 2, and cooling the pinch roll inlet through the plurality of first nozzles 2; the first turbid circulating water is fed to the first spraying means by which the feeding roller 36 is cooled and to the eighth spraying nozzle 26, and the transition roller table 45 is cooled by the eighth spraying means 26. Thus, during the alternate use of the plurality of reels, when the upper pinch roll 34 and the lower pinch roll 37 are operated and the strip passes, the second nozzle 5 cools the upper pinch roll 34, the third nozzle 14 cools the lower pinch roll 37, and the fifth nozzle 18 cools the press roll 35. The seventh nozzle 23 cools the outer ring of the coil of steel when the coiler is in manual or automatic mode and the coiling is completed and the coil 42 is running, and the seventh nozzle 23 cools the coil 42 after the coil is discharged and when the movable support of the coil 42 is closed. The second spray member cools the backup roll 40 after the roll is removed and the movable support of the roll 42 is closed and the backup roll 40 is running adjacent to the roll 42. And the pinch roll inlet is cooled by a plurality of first nozzles 2 so as to spray turbid circulating water on the surface of the strip steel at the pinch roll inlet directly and laterally. The first spraying part cools the feeding roller 36, and the eighth spraying nozzle 26 cools the transition roller way 45, so that the cooling water consumption provided for the coiling area equipment can be reduced, and water resources can be saved. Thereby achieving the technical effect of saving water resources.
In order to describe a method for cooling equipment in a hot rolled strip coiling area in detail, so as to support the technical problem to be solved by the invention, in the embodiment provided by the invention, firstly, a system for cooling equipment in the hot rolled strip coiling area is described in detail by an embodiment, and then, in the process of describing a system for cooling equipment in the hot rolled strip coiling area, the method for cooling equipment in the hot rolled strip coiling area provided by the invention is further specifically introduced so as to achieve the purposes of completeness, clarity and understanding.
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments obtained by a person skilled in the art based on the embodiments of the present invention are within the scope of the present invention; wherein reference to "and/or" in this embodiment indicates and/or two cases, in other words, reference to a and/or B in the embodiments of the present invention indicates two cases of a and B, A or B, and describes three states in which a and B exist, such as a and/or B, and indicates: only A and not B; only B and not A; includes A and B.
It will be understood that, although the terms "first," "second," etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments. Spatially relative terms, such as "below," "above," and the like, may be used herein to facilitate a description of one element or feature's relationship to another element or feature. It will be understood that the spatially relative terms may be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements or features described as "below" would then be oriented "on" other elements or features. Thus, the exemplary term "below" may include both above and below orientations. The device may be oriented (rotated 90 degrees or in other orientations) and the spatially relative descriptors used herein interpreted accordingly.
Also, in embodiments of the present invention, when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When a component is considered to be "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. The terms "vertical", "horizontal", "left", "right" and the like are used in the embodiments of the present invention for illustrative purposes only and are not intended to limit the present invention.
Example 1
Referring to fig. 1 and 2, fig. 1 is a schematic diagram of a system for cooling a hot rolled strip coiling area according to an embodiment of the present invention, and fig. 2 is a schematic diagram of a system for cooling a hot rolled strip coiling area according to an embodiment of the present invention. The first system provided by the embodiment of the invention for equipment cooling in the hot rolled strip coiling area comprises a first liquid supply pipe 1, a plurality of first nozzles 2, a first stop valve 3, a first electromagnetic pneumatic valve 4, a second nozzle 5, a second liquid supply pipe 6, a manual butterfly valve 7, a second stop valve 8, a second electromagnetic pneumatic valve 9, a third stop valve 10, a normally open infusion pipe 11, a third electromagnetic pneumatic valve 12, a fourth stop valve 13, a third nozzle 14, a fifth stop valve 15, a first injection component, a sixth stop valve 17, a fifth nozzle 18, a seventh stop valve 19, a second injection component, an eighth stop valve 21, a fourth electromagnetic pneumatic valve 22, a seventh nozzle 23, a ninth stop valve 24, a fifth electromagnetic pneumatic valve 25, an eighth nozzle 26, a tenth stop valve 27 and a sixth electromagnetic pneumatic valve 28, wherein the first liquid supply pipe 1, the plurality of first nozzles 2, the third stop valve 3, the first electromagnetic pneumatic valve 4, the second nozzle 5, the second liquid supply pipe 6, the third nozzle 14, the fifth stop valve 15, the first injection component, the sixth stop valve 17, the fifth electromagnetic pneumatic valve 22, the seventh stop valve 23, the ninth stop valve 24, the fifth electromagnetic pneumatic valve 25, the fifth stop valve 26, the fifth electromagnetic pneumatic valve 27 and the fifth electromagnetic pneumatic valve 28 are respectively:
For the first liquid supply pipe 1, the plurality of first nozzles 2, the first shut-off valve 3, the first electromagnetic pneumatic valve 4, the second nozzle 5, the second liquid supply pipe 6, the manual butterfly valve 7, the second shut-off valve 8, the second electromagnetic pneumatic valve 9, the third shut-off valve 10, the normally open liquid supply pipe 11, the third electromagnetic pneumatic valve 12, the fourth shut-off valve 13, the third nozzle 14, the fifth shut-off valve 15, the first injection member, the sixth shut-off valve 17, the fifth nozzle 18, the seventh shut-off valve 19, the second injection member, the eighth shut-off valve 21, the fourth electromagnetic pneumatic valve 22, the seventh nozzle 23, the ninth shut-off valve 24, the fifth electromagnetic pneumatic valve 25, the eighth nozzle 26, the tenth shut-off valve 27, and the sixth electromagnetic pneumatic valve 28:
the first nozzles 2 are communicated with the first liquid supply pipe 1, the first nozzles 2 can be 1 first nozzle 2, 2 first nozzles 2, 3 first nozzles 2, 4 first nozzles 2 and the like, the first nozzles 2 are positioned above the inlet of the upper pinch roll 34, and the first liquid supply pipe 1 can supply turbid circulating water with the pressure of 0.9 to 1.0 MPa; the first stop valve 3 is arranged on a pipeline between the first liquid supply pipe 1 and the plurality of first nozzles 2; the first electromagnetic pneumatic valve 4 is arranged on a pipeline between the first stop valve 3 and the first nozzle 2; the second nozzle 5 and the second liquid supply pipe 6 are mutually communicated, the second nozzle 5 is close to the upper pinch roll 34, and the second liquid supply pipe 6 can be used for conveying turbid circulating water with the pressure of 0.4MPa to 0.6 MPa; the manual butterfly valve 7 is arranged on a pipeline between the second nozzle 5 and the second liquid supply pipe 6; the second stop valve 8 is arranged on a pipeline between the manual butterfly valve 7 and the second nozzle 5; the second electromagnetic pneumatic valve 9 is mounted on the conduit between the second shut-off valve 8 and the second nozzle 5.
A third shut-off valve 10 is mounted on the conduit between said second electromagnetic pneumatic valve 9 and said second nozzle 5; one end of the normally open infusion tube 11 is arranged on a pipeline between the second electromagnetic pneumatic valve 9 and the third stop valve 10, and the other end of the normally open infusion tube 11 is arranged between the second stop valve 8 and the manual butterfly valve 7; the third electromagnetic pneumatic valve 12 is arranged on the normally open infusion tube 11; the fourth stop valve 13 is arranged on the normally open infusion tube 11, and the fourth stop valve 13 is positioned between the third electromagnetic pneumatic valve 12 and the manual butterfly valve 7; the third nozzle 14 is close to the lower pinch roll 37, and the third nozzle 14 is connected with the second electromagnetic pneumatic valve 9; the fifth stop valve 15 is arranged on a pipeline between the third nozzle 14 and the second electromagnetic pneumatic valve 9; the first spraying component is close to the feeding roller 36 and is connected with the second electromagnetic pneumatic valve 9; the sixth shut-off valve 17 is mounted on the conduit between the first injection member and the second electro-pneumatic valve 9.
The fifth nozzle 18 is close to the press roller 35, and the fifth nozzle 18 is connected with the second electromagnetic pneumatic valve 9; the seventh stop valve 19 is arranged on a pipeline between the fifth nozzle 18 and the second electromagnetic pneumatic valve 9; the second spraying component is close to the wrapper roller 40 and is connected with the manual butterfly valve 7; the eighth shutoff valve 21 is mounted on the pipe between the second injection member and the manual butterfly valve 7; the fourth electromagnetic pneumatic valve 22 is installed on a pipe between the eighth shut-off valve 21 and the second injection member; the seventh nozzle 23 is close to the outer ring of the steel coil and the winding drum 42, and the seventh nozzle 23 is connected with the manual butterfly valve 7; the ninth stop valve 24 is installed on a pipe between the seventh nozzle 23 and the manual butterfly valve 7; the fifth electromagnetic pneumatic valve 25 is mounted on the pipe between the ninth shut-off valve 24 and the seventh nozzle 23.
The eighth nozzle 26 is close to the transition roller way 45, and the eighth nozzle 26 and the second liquid supply pipe 6 are communicated with each other through a pipeline; the tenth stop valve 27 is mounted on the pipe between the eighth nozzle 26 and the second liquid supply pipe 6; the sixth electromagnetic pneumatic valve 28 is mounted on the pipe between the tenth shut-off valve 27 and the eighth nozzle 26. The first injection component comprises a first fourth nozzle 161 and a second fourth nozzle 162, the first fourth nozzle 161 is connected with the second electromagnetic pneumatic valve 9, and the second fourth nozzle 162 is connected with the second electromagnetic pneumatic valve 9. The second ejection means includes a sixth nozzle 201, a sixth nozzle 202, and a sixth nozzle 203.
Specifically, the pressure of turbid circulating water fed in the first liquid feed pipe 1 ranges from 0.9MPa to 1.0MPa, and the pressure of turbid circulating water fed in the second liquid feed pipe 6 ranges from 0.4MPa to 0.6 MPa. The first shut-off valve 3 is a shut-off valve, which is a forced sealing valve, and the second shut-off valve 8, the third shut-off valve 10, the fourth shut-off valve 13, the fifth shut-off valve 15, the sixth shut-off valve 17, the seventh shut-off valve 19, the eighth shut-off valve 21, the ninth shut-off valve 24 and the tenth shut-off valve 27 are shut-off valves. The first nozzle 2 is a nozzle, and the position close to the nozzle is cooled by injecting turbid circulating water from the nozzle, and the second nozzle 5, the third nozzle 14, the fourth nozzle, the fifth nozzle 18, the second injection member, the seventh nozzle 23, and the eighth nozzle 26 are nozzles. The first electromagnetic pneumatic valve 4 refers to an electromagnetic pneumatic valve, the electromagnetic valve is an industrial device controlled by electromagnetic, and is an automatic base element for controlling fluid, and the second electromagnetic pneumatic valve 9, the third electromagnetic pneumatic valve 12, the fourth electromagnetic pneumatic valve 22, the fifth electromagnetic pneumatic valve 25 and the sixth electromagnetic pneumatic valve 28 can all refer to electromagnetic pneumatic valves.
Note that, when the upper pinch roll 34, the lower pinch roll 37 and the press roll 35 need to be cooled, the upper pinch roll 34 may be cooled by spraying turbid circulating water through the second nozzle 5, the lower pinch roll 37 may be cooled by spraying turbid circulating water through the third nozzle 14, the press roll 35 may be cooled by spraying turbid circulating water through the fifth nozzle 18, for example, when the upper pinch roll 34 and the lower pinch roll 37 are operated and strip steel passes through, the upper pinch roll 34 may be cooled by spraying turbid circulating water through the second nozzle 5 by opening the manual butterfly valve 7, the fourth stop valve 13, the third electromagnetic pneumatic valve 12, the third stop valve 10, the second stop valve 8 and the second electromagnetic pneumatic valve 9, and then simultaneously opening the fifth stop valve 15, and then simultaneously opening the seventh stop valve 19, and finally, the fifth nozzle 18 sprays turbid circulating water to cool the press roll 35.
In addition, when the outer coil and the winding drum 42 need to be cooled, the seventh nozzle 23 sprays turbid circulating water to cool the outer coil and the winding drum 42, for example, the manual butterfly valve 7, the ninth stop valve 24 and the fifth electromagnetic pneumatic valve 25 are opened, so that the seventh nozzle 23 sprays turbid circulating water to cool the outer coil and the winding drum 42. When the coiler is in a manual or automatic mode and the coiling is completed and the drum 42 is running, the outer ring of the coil is cooled by spraying turbid circulating water through the seventh nozzle 23. After the coil is discharged and the movable support of the coil 42 is closed, turbid circulating water is sprayed through the seventh nozzle 23 to cool the coil 42.
During winding, the fifth electromagnetic pneumatic valve 25 and the ninth shut-off valve 24 are controlled to be opened, and the seventh nozzle 23 is controlled to be closed. When the auxiliary winding roller 40 needs to be cooled, the auxiliary winding roller 40 is cooled by spraying turbid circulating water through the second spraying component, for example, the manual butterfly valve 7, the eighth stop valve 21 and the fourth electromagnetic pneumatic valve 22 are opened, so that the second spraying component sprays turbid circulating water to cool the auxiliary winding roller 40. After the coil is discharged and the movable support of the winding drum 42 is closed, and the auxiliary winding roller 40 runs close to the winding drum 42, the auxiliary winding roller 40 is cooled by spraying turbid circulating water by the second spraying component through opening the eighth stop valve 21 and the fourth electromagnetic pneumatic valve 22.
When the pinch roll inlet needs to be laterally sprayed, the first nozzles 2 are used for spraying turbid circulating water to laterally spray and cool the pinch roll inlet, for example, a certain amount of the first nozzles 2 can be used for directly laterally spraying turbid circulating water with the pressure of about 0.9Mpa to 1Mpa on the surface of strip steel by opening the first stop valve 3 and the first electromagnetic pneumatic valve 4. When the feeding roller 36 and the transition roller way 45 need to be cooled, the first spraying component sprays turbid circulating water to spray-cool the feeding roller 36, and the eighth spraying nozzle 26 sprays turbid circulating water to spray-cool the transition roller way 45, for example, the manual butterfly valve 7, the fourth stop valve 13, the third electromagnetic pneumatic valve 12 and the sixth stop valve 17 are opened, so that the fourth spraying nozzle sprays turbid circulating water to spray-cool the feeding roller 36. The eighth nozzle 26 sprays turbid circulating water to spray and cool the transition roller table 45 by opening the tenth stop valve 27 and the sixth electromagnetic pneumatic valve 28. In the above-described cooling of the upper pinch roll 34, the lower pinch roll 37 and the press roll 35, the cooling of the outer ring of the coil and the winding drum 42, and the cooling of the auxiliary roll 40, turbid circulating water having a pressure ranging from 0.4MPa to 0.6MPa may be used, and the turbid circulating water after coiling and cooling flows into the pit through the slag runner.
It should be noted that the upper pinch roll 34 and the lower pinch roll 37 are disposed at the entrance of a coiler (such as coiler 47), the head of the strip is introduced into the coiler, and the tension of the head, tail and coiler is achieved by the difference in rotational speed from the reel 42. The pinch roll device consists of a frame, an upper pinch roll, a lower pinch roll, a press roll, a valve, a lifting guide plate 38 and the like. The press roller 35 is used to guide the belt head into the coiler, and is typically driven to oscillate by an air cylinder. The shutter is driven by a hydraulic cylinder 39 to open and close the coiler front entrance guide doors. The coiling machine mainly comprises a frame, a winding drum 42, a coil assisting roller 40, an arc-shaped guide plate 43, a movable support, a transmission device and the like. The position control and the pressure control of the auxiliary roll 40 are carried out by a hydraulic servo system to realize automatic pedal auxiliary roll, the auxiliary roll 40 is positioned between the swinging frame 41 and the hydraulic cylinder 39, the switch plate 46 is positioned between the inclined chute plate 44 and the upper pinch roll 34, and the hot continuous rolling coiling cooling adopts turbid circulating water.
Taking 3 recoilers as an example, the cooling water system of each recoiler is shown in fig. 1, and the cooling water amount of a single recoiler device is shown in the following table one:
when the outside cooling water of the transition roller table 45 is not considered, it is understood from the above cooling process that the auxiliary roller 40 and the outside cooling water are both in a closed state when the coiler drum 42 is operated to wind, and the flow rate is maximized when the additional flow rate cooling valve is opened for cooling the feed roller 36 and the pinch roller. As shown in fig. 1, for a coiler in an operating state, the quantity of cooling water is maximum when the coiler is operated: q (Q) Work of ＝Q 1 +Q 2 +Q 3 +Q 4 +3×Q 5 +Q 6 +q 7 In the above formula, Q Work of The maximum cooling water quantity of the coiling machine in the working state; q (Q) 1 Is the amount of water required for the feed roll 36 to cool; q (Q) 2 Is the amount of water required for cooling by the lower pinch roll 37; q (Q) 3 Is the amount of water required for the upper pinch roll 34 to cool; q (Q) 4 Is the amount of water required for the cooling of the press roller 35; q (Q) 5 Is the amount of water required for cooling the three wrapper rolls 40; q (Q) 6 Is the water required by the cooling of the outer ring or the winding drum 42 of the steel coil; q (Q) 7 Is the amount of cooling water required for the inlet side spray.
As can be seen from the data in Table one above, Q Work of ＝80m 3 For a coiler in the standby state, the cooling water quantity is maximum when both the coiler drum 42 and the auxiliary roller 40 are in the cooled state:
in this formula: q (Q) Waiting for rolling Is the maximum cooling water quantity of the coiling machine in the state of waiting to coil. When the first coiler 47, the second coiler 48 and the third coiler 49 are considered, and the three coilers are used alternately at the same time and are standby coilers, the maximum total water amount can be determined by selecting the working condition of the maximum flow rate. Obviously, the more the transition roller way 45 the strip passes, the larger the water quantity, namely when the third coiling machine 49 is in the current coiling state, the first coiling machine 47 or the second coiling machine 48 is the standby coiling machine, and the water quantity is the largest when the winding drums 42 and the auxiliary winding rollers 40 of the two coiling machines are in the cooling state at the same time: / >In this formula: q (Q) Total (S) Is the total water for cooling the equipment in the crimping zoneAn amount of; q is the cooling water quantity outside the transition roller way 45 between the coiling machines of each section. If the total water amounts of the first coiler 47, the second coiler 48 and the third coiler 49 are directly added when the working condition is not known, the total amount of cooling water for the crimping zone equipment is:
in this formula: q (Q) Total (S) The' total cooling water amount of the crimping zone equipment is obtained by adding the maximum water amount of each cooling part of the coiling machine. As shown by the comparison analysis, if the working condition is not analyzed, the maximum water consumption of each cooling part of the coiling machine is directly added to obtain the total cooling water, and the water supply is directly increased by 74%. Thus, the cooling water consumption provided for the coiling area equipment can be reduced, and water resources are saved.
The first system for cooling equipment in a hot rolled strip coiling area provided by the embodiment of the invention can further comprise a first flowmeter 29, a second flowmeter 30, a third flowmeter 31, a fourth flowmeter 32, a fifth flowmeter 33, a pit, a first submersible pump, a second submersible pump and a liquid level meter, wherein the first flowmeter 29 is arranged on a pipeline between the second stop valve 8 and the second electromagnetic pneumatic valve 9. A second flowmeter 30 is mounted on the conduit between said fourth shut-off valve 13 and said third electromagnetic pneumatic valve 12. A third flowmeter 31 is mounted on the conduit between the eighth shut-off valve 21 and the second injection member. A fourth flow meter 32 is mounted on the conduit between said ninth shut-off valve 24 and said fifth electromagnetic pneumatic valve 25. A fifth flow meter 33 is mounted on the conduit between the tenth shut-off valve 27 and the eighth nozzle 26. A pit for placing turbid circulating water delivered by a plurality of the first nozzle 2, the second nozzle 5, the third nozzle 14, the first spray member, the fifth nozzle 18, the second spray member, the seventh nozzle 23, and the eighth nozzle 26; the first submersible pump is arranged in the pit, and the second submersible pump is arranged in the pit. The liquid level meter is installed in the pit, and the liquid level meter is provided with an extremely low position, a high position and an extremely high position.
Specifically, the first flowmeter 29 may measure the flow rate between the second shut-off valve 8 and the second electromagnetic pneumatic valve 9, the second flowmeter 30 may measure the flow rate between the fourth shut-off valve 13 and the third electromagnetic pneumatic valve 12, the third flowmeter 31 may measure the flow rate between the eighth shut-off valve 21 and the second injection member, the fourth flowmeter 32 may measure the flow rate between the ninth shut-off valve 24 and the fifth electromagnetic pneumatic valve 25, and the fifth flowmeter 33 may measure the flow rate between the tenth shut-off valve 27 and the eighth nozzle 26. Two submersible pumps can be arranged in the pit, the first submersible pump can be a working pump, the second submersible pump can be a standby pump,
in addition, when the design is selected, the pit is ensured to have a certain volume, and the pump is prevented from being started and stopped frequently. The ideal state is that the displacement of the submersible pump is completely equal to the coiling cooling flow, and the working pump is always in an operating state, and meanwhile, the pit has a certain volume. For the volume of the pit, the larger the volume is, the better, the larger the volume is, the longer the sewage retention time is easily caused, and the sediment hardening can not be discharged. Since the actual cooling flow of the winding is varied, a perfect match of the pump displacement to it is not guaranteed. If the model selection flow of the submersible pump is smaller, the standby pump is started and stopped frequently, so that the model selection flow of the submersible pump is equivalent to the maximum flow of the coiling cooling statistics. The pit is furnished with four control points of liquid level gauge can be provided with very low level, high level and high level, and the interlocking relation is: when the liquid in the pit is at a very low level, an alarm is given and the pump is not allowed to be started, so that the suction of the pump is prevented. When the liquid in the pit is lower than the low level, the working pump stops in a chain. When the liquid in the pit is higher than the high level, the working pump is started in a linkage way. When the liquid in the pit is at a higher level than the high level, an alarm is given and a standby pump is started. In addition, because the submerged pump does not operate for a long time, parts can be easily corroded, the service life of the pump is easily shortened, and the first submerged pump and the second submerged pump can be switched for use, for example, the first submerged pump is used as a standby pump, and the second submerged pump is used as a working pump. According to the working mechanism, under the limit condition that the first submersible pump and the second submersible pump are not started, the volume requirement of the pit can accommodate the coiling cooling water quantity for about 20 minutes above the extremely low liquid level, and the displacement requirement of a single pump of the first submersible pump or the second submersible pump is slightly larger than or equal to the maximum flow rate during coiling cooling. Therefore, the frequent start and stop of the submersible pump can be reduced, and the service lives of the first submersible pump and the second submersible pump can be prolonged.
The invention provides a system applied to equipment cooling in a hot rolled strip steel coiling area, which is communicated with a first liquid supply pipe 1 through a plurality of first nozzles 2, wherein the first nozzles 2 are positioned above the inlet of an upper pinch roll 34, and the first liquid supply pipe 1 can be used for conveying turbid circulating water with the pressure of 0.9MPa to 1.0 MPa. The first shut-off valve 3 is mounted on the conduit between the first supply pipe 1 and the plurality of first nozzles 2. A first electromagnetic pneumatic valve 4 is mounted on the conduit between the first shut-off valve 3 and the first nozzle 2. The second nozzle 5 and the second liquid supply pipe 6 are mutually communicated, the second nozzle 5 is close to the upper pinch roll 34, and the second liquid supply pipe 6 can supply turbid circulating water with the pressure of 0.4MPa to 0.6 MPa. A manual butterfly valve 7 is mounted on the conduit between the second nozzle 5 and the second supply pipe 6. The second stop valve 8 is arranged on a pipeline between the manual butterfly valve 7 and the second nozzle 5, the second electromagnetic pneumatic valve 9 is arranged on a pipeline between the second stop valve 8 and the second nozzle 5, the third stop valve 10 is arranged on a pipeline between the second electromagnetic pneumatic valve 9 and the second nozzle 5, one end of the normally open infusion tube 11 is arranged on a pipeline between the second electromagnetic pneumatic valve 9 and the third stop valve 10, and the other end of the normally open infusion tube 11 is arranged between the second stop valve 8 and the manual butterfly valve 7. The third electromagnetic pneumatic valve 12 is arranged on the normally open infusion tube 11, the fourth stop valve 13 is positioned between the third electromagnetic pneumatic valve 12 and the manual butterfly valve 7, the third nozzle 14 is close to the lower pinch roll 37, and the third nozzle 14 is connected with the second electromagnetic pneumatic valve 9. The fifth shut-off valve 15 is mounted on the conduit between the third nozzle 14 and the second electromagnetic pneumatic valve 9, the first injection member being adjacent to the feed roller 36, the first injection member being connected to the second electromagnetic pneumatic valve 9. The sixth shut-off valve 17 is mounted on the conduit between the first injection member and the second electro-magnetic pneumatic valve 9, the fifth nozzle 18 is close to the pressure roller 35, and the fifth nozzle 18 is connected to the second electro-magnetic pneumatic valve 9. A seventh shut-off valve 19 is mounted on the conduit between the fifth nozzle 18 and the second electromagnetic pneumatic valve 9. The second spray member is adjacent the wrapper roller 40 and is connected to the manual butterfly valve 7. The eighth stop valve 21 is arranged on a pipeline between the second injection part and the manual butterfly valve 7, the fourth electromagnetic pneumatic valve 22 is arranged on a pipeline between the eighth stop valve 21 and the second injection part, the seventh nozzle 23 is close to the outer ring of the steel coil and the winding drum 42, and the seventh nozzle 23 is connected with the manual butterfly valve 7. A ninth shut-off valve 24 is mounted on the conduit between the seventh nozzle 23 and the manual butterfly valve 7. The fifth electromagnetic pneumatic valve 25 is arranged on a pipeline between the ninth stop valve 24 and the seventh nozzle 23, the eighth nozzle 26 is close to the transition roller way 45, and the eighth nozzle 26 and the second liquid supply pipe 6 are communicated with each other through the pipeline; a tenth shut-off valve 27 is mounted on the conduit between the eighth nozzle 26 and the second liquid supply pipe 6; a sixth electro-magnetic pneumatic valve 28 is mounted on the conduit between the tenth shut-off valve 27 and the eighth nozzle 26. Thus, during the alternate use of the plurality of reels, when the upper pinch roll 34 and the lower pinch roll 37 are operated and the strip passes, the second nozzle 5 cools the upper pinch roll 34, the third nozzle 14 cools the lower pinch roll 37, and the fifth nozzle 18 cools the press roll 35. The seventh nozzle 23 cools the outer ring of the coil of steel when the coiler is in manual or automatic mode and the coiling is completed and the coil 42 is running, and the seventh nozzle 23 cools the coil 42 after the coil is discharged and when the movable support of the coil 42 is closed. The second spray member cools the backup roll 40 after the roll is removed and the movable support of the roll 42 is closed and the backup roll 40 is running adjacent to the roll 42. And the pinch roll inlet is cooled by a plurality of first nozzles 2 so as to spray turbid circulating water on the surface of the strip steel at the pinch roll inlet directly and laterally. The first spraying part cools the feeding roller 36, and the eighth spraying nozzle 26 cools the transition roller way 45, so that the cooling water consumption provided for the coiling area equipment can be reduced, and water resources can be saved. Thereby achieving the technical effect of saving water resources.
In order to describe in detail a method for cooling equipment in a hot rolled strip coiling area provided by the application, the embodiment describes in detail a system for cooling equipment in a hot rolled strip coiling area, and based on the same inventive concept, the application also provides a method for cooling equipment in a hot rolled strip coiling area, which is described in detail in the following embodiment II.
Example two
Referring to fig. 3, fig. 3 is a flowchart of a method for cooling a hot rolled strip coiling area according to an embodiment of the present application, and a second embodiment of the present application provides a method for cooling a hot rolled strip coiling area, comprising the following steps:
step S100, conveying the first turbid circulating water to the second nozzle 5, the third nozzle 14 and the fifth nozzle 18, cooling the upper pinch roll 34 through the second nozzle 5, cooling the lower pinch roll 37 through the third nozzle 14 and cooling the press roll 35 through the fifth nozzle 18;
the pressure of the first turbid circulating water is 0.4MPa to 0.6MPa;
specifically, the first turbid circulating water is turbid circulating water fed through the first liquid feed pipe 1, the upper pinch roller 34 can be cooled by jetting turbid circulating water through the second nozzle 5, the lower pinch roller 37 can be cooled by jetting turbid circulating water through the third nozzle 14, and the press roller 35 can be cooled by jetting turbid circulating water through the fifth nozzle 18.
Step S110, conveying the first turbid circulating water to a seventh nozzle 23, and cooling the outer ring of the steel coil and the winding drum 42 through the seventh nozzle 23;
step S120, conveying the first turbid circulating water to a sixth nozzle, and cooling the auxiliary winding roller 40 through a second spraying component;
the cooling of the wrapper roller 40 by the second spraying means includes: the backup roller 40 is cooled by the first, second and third sixth nozzles 201, 202 and 203 in the second spray member.
Specifically, the second spraying means may include a first sixth nozzle 201, a second sixth nozzle 202, and a third sixth nozzle 203, and the auxiliary winding roller 40 is cooled by spraying turbid circulating water through the first sixth nozzle 201, the second sixth nozzle 202, and the third sixth nozzle 203, respectively.
Step S130, conveying second turbid circulating water to a plurality of first nozzles 2, and cooling the entrance of the pinch roll through the plurality of first nozzles 2;
the pressure of the second turbid circulating water is 0.9MPa to 1.0MPa.
Specifically, the second turbid circulating water is turbid circulating water fed through the second liquid feed pipe 6, and the pinch roll inlet can be cooled by the plurality of first nozzles 2.
In step S140, the first turbid circulating water is fed to the first spraying means, by which the feeding roller 36 is cooled, and to the eighth spraying nozzle 26, by which the transition roller table 45 is cooled.
The cooling of the feed roller 36 by the first sparging component includes: the feeding roller 36 is cooled by the first and second fourth nozzles 161 and 162 in the first spraying section.
Specifically, the first spraying means may include a first fourth nozzle 161 and a second fourth nozzle 162, and the turbid circulating water is sprayed through the first fourth nozzle 161 and the second fourth nozzle 162 to cool the feeding roller 36.
The second embodiment of the invention provides a method for cooling equipment applied to a hot rolled strip coiling area, which further comprises the following steps: mounting a first flowmeter 29 on the conduit between the second shut-off valve 8 and the second electromagnetic pneumatic valve 9; mounting the second flowmeter 30 on the pipe between the fourth shut-off valve 13 and the third electromagnetic pneumatic valve 12; mounting a third flowmeter 31 on the pipe between the eighth shut-off valve 21 and the sixth nozzle; a fourth flowmeter 32 mounted on the pipe between the ninth shut-off valve 24 and the fifth electromagnetic pneumatic valve 25; mounting a fifth flowmeter 33 on the pipe between the tenth shut-off valve 27 and the eighth nozzle 26; the first submersible pump is arranged in the pit, and the second submersible pump is arranged in the pit. The liquid level meter is arranged in the pit and is provided with an extremely low position, a high position and an extremely high position. When the liquid level in the pit is lower than the extremely low level, an alarm is given and the first submersible pump and the second submersible pump are closed. When the liquid level in the pit is lower than the low level and the liquid level in the pit is higher than the extremely low level, the alarm is closed, and the first submersible pump and the second submersible pump are closed. When the liquid level in the pit is lower than the high level and the liquid level in the pit is higher than the high level, the alarm is closed, the first submersible pump is started, and the second submersible pump is closed. When the liquid level in the pit is higher than the extremely high level, alarming is carried out, and the first submersible pump and the second submersible pump are started.
The invention provides a method applied to equipment cooling in a hot rolled strip coiling area, which comprises the steps of conveying first turbid circulating water to a second nozzle 5, a third nozzle 14 and a fifth nozzle 18, cooling an upper pinch roll 34 through the second nozzle 5, cooling a lower pinch roll 37 through the third nozzle 14, and cooling a compression roll 35 through the fifth nozzle 18; the first turbid circulating water is conveyed to a seventh nozzle 23, and the outer ring of the steel coil and the winding drum 42 are cooled through the seventh nozzle 23; delivering the first turbid circulating water to a sixth nozzle, and cooling the auxiliary winding roller 40 by a second spraying part; delivering second turbid circulating water to a plurality of first nozzles 2, and cooling the pinch roll inlet through the plurality of first nozzles 2; the first turbid circulating water is fed to the first spraying means by which the feeding roller 36 is cooled and to the eighth spraying nozzle 26, and the transition roller table 45 is cooled by the eighth spraying means 26. Thus, during the alternate use of the plurality of reels, when the upper pinch roll 34 and the lower pinch roll 37 are operated and the strip passes, the second nozzle 5 cools the upper pinch roll 34, the third nozzle 14 cools the lower pinch roll 37, and the fifth nozzle 18 cools the press roll 35. The seventh nozzle 23 cools the outer ring of the coil of steel when the coiler is in manual or automatic mode and the coiling is completed and the coil 42 is running, and the seventh nozzle 23 cools the coil 42 after the coil is discharged and when the movable support of the coil 42 is closed. The second spray member cools the backup roll 40 after the roll is removed and the movable support of the roll 42 is closed and the backup roll 40 is running adjacent to the roll 42. And the pinch roll inlet is cooled by a plurality of first nozzles 2 so as to spray turbid circulating water on the surface of the strip steel at the pinch roll inlet directly and laterally. The first spraying part cools the feeding roller 36, and the eighth spraying nozzle 26 cools the transition roller way 45, so that the cooling water consumption provided for the coiling area equipment can be reduced, and water resources can be saved. Thereby achieving the technical effect of saving water resources.
Finally, it should be noted that the above-mentioned embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same, and although the present invention has been described in detail with reference to examples, it should be understood by those skilled in the art that modifications and equivalents may be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention, and all such modifications and equivalents are intended to be encompassed in the scope of the claims of the present invention.
Claims (9)
1. A method for application to equipment cooling in a hot rolled strip coiling zone, the method comprising:
the first turbid circulating water is conveyed to a second nozzle, a third nozzle and a fifth nozzle, the upper pinch roll is cooled through the second nozzle, the lower pinch roll is cooled through the third nozzle, and the press roll is cooled through the fifth nozzle;
conveying the first turbid circulating water to a seventh nozzle, and cooling the outer ring of the steel coil and the winding drum through the seventh nozzle;
delivering the first turbid circulating water to a sixth nozzle, and cooling the auxiliary winding roller through a second spraying component;
conveying the second turbid circulating water to a plurality of first nozzles, and cooling the entrance of the pinch roll through the plurality of first nozzles so as to spray the turbid circulating water on the surface of the strip steel at the entrance of the pinch roll directly and laterally;
Conveying the first turbid circulating water to a first spraying component and an eighth nozzle, cooling the feeding roller through the first spraying component, and cooling the transition roller way through the eighth nozzle;
wherein the pressure of the first turbid circulating water is 0.4MPa to 0.6MPa;
the pressure of the second turbid circulating water is 0.9MPa to 1.0MPa.
2. The method for applying equipment cooling to a hot rolled strip coiling area as claimed in claim 1, wherein said cooling the auxiliary winding roller by the second spraying means comprises:
and cooling the auxiliary winding roller through a first sixth nozzle, a second sixth nozzle and a third sixth nozzle in the second spraying component.
3. The method for applying equipment cooling to a hot strip coiling block as in claim 1, wherein said cooling at the feed rolls by said first spray means comprises:
and cooling the feeding roller through a first fourth nozzle and a second fourth nozzle in the first spraying component.
4. The method for application to equipment cooling in a hot rolled strip coiling zone as recited in claim 1, further comprising:
a second stop valve and a second electromagnetic pneumatic valve are arranged on a pipeline from the first turbid water to the third nozzle, and the first flowmeter is arranged on the pipeline between the second stop valve and the second electromagnetic pneumatic valve;
A normally open infusion tube is connected to the pipeline from the first turbid water ring to the third nozzle, a fourth stop valve and a third electromagnetic pneumatic valve are arranged on the normally open infusion tube, and a second flowmeter is arranged on the pipeline between the fourth stop valve and the third electromagnetic pneumatic valve;
an eighth stop valve is arranged on a pipeline from the first turbid water to the sixth nozzle, and a third flowmeter is arranged on the pipeline between the eighth stop valve and the sixth nozzle;
a ninth stop valve and a fifth electromagnetic pneumatic valve are arranged on the pipeline from the first turbid water to the seventh nozzle, and a fourth flowmeter is arranged on the pipeline between the ninth stop valve and the fifth electromagnetic pneumatic valve;
a tenth stop valve is arranged on a pipeline from the first turbid water to the eighth nozzle, and a fifth flowmeter is arranged on the pipeline between the tenth stop valve and the eighth nozzle;
the first submersible pump is arranged in the pit, and the second submersible pump is arranged in the pit.
5. The method for application to equipment cooling in a hot rolled strip coiling zone as recited in claim 1, further comprising:
the liquid level meter is arranged in the pit and is provided with an extremely low position, a high position and an extremely high position.
6. The method for application to equipment cooling in a hot strip coiling zone as recited in claim 5, further comprising:
When the liquid level in the pit is lower than the extremely low level, an alarm is given and the first submersible pump and the second submersible pump are closed.
7. The method for application to equipment cooling in a hot strip coiling zone as recited in claim 5, further comprising:
when the liquid level in the pit is lower than the low level and the liquid level in the pit is higher than the extremely low level, the alarm is closed, and the first submersible pump and the second submersible pump are closed.
8. The method for application to equipment cooling in a hot strip coiling zone as recited in claim 5, further comprising:
when the liquid level in the pit is lower than the high level and the liquid level in the pit is higher than the high level, the alarm is closed, the first submersible pump is started, and the second submersible pump is closed.
9. The method for application to equipment cooling in a hot strip coiling zone as recited in claim 5, further comprising:
when the liquid level in the pit is higher than the extremely high level, alarming is carried out, and the first submersible pump and the second submersible pump are started.
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| CN202111390677.7A CN114210746B (en) | 2021-11-23 | 2021-11-23 | Method for cooling equipment in hot rolled strip steel coiling area |
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| CN202111390677.7A CN114210746B (en) | 2021-11-23 | 2021-11-23 | Method for cooling equipment in hot rolled strip steel coiling area |
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| CN113560348A (en) * | 2021-08-02 | 2021-10-29 | 常州宝菱重工机械有限公司 | Cooling system for coiler drum |
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| JPH08332514A (en) * | 1995-06-09 | 1996-12-17 | Nippon Steel Corp | Continuous hot rolling equipment for thin scale steel sheet and manufacture of thin scale steel sheet |
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| CN114210746A (en) | 2022-03-22 |
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