CN114210746A - 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
- Publication number
- CN114210746A CN114210746A CN202111390677.7A CN202111390677A CN114210746A CN 114210746 A CN114210746 A CN 114210746A CN 202111390677 A CN202111390677 A CN 202111390677A CN 114210746 A CN114210746 A CN 114210746A
- Authority
- CN
- China
- Prior art keywords
- nozzle
- cooling
- valve
- circulating water
- turbid circulating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 123
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 48
- 239000010959 steel Substances 0.000 title claims abstract description 48
- 238000000034 method Methods 0.000 title claims abstract description 47
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 116
- 238000005507 spraying Methods 0.000 claims abstract description 45
- 238000002347 injection Methods 0.000 claims abstract description 34
- 239000007924 injection Substances 0.000 claims abstract description 34
- 238000004804 winding Methods 0.000 claims abstract description 30
- 230000007704 transition Effects 0.000 claims abstract description 19
- 239000007788 liquid Substances 0.000 claims description 55
- 239000007921 spray Substances 0.000 claims description 26
- 230000000694 effects Effects 0.000 abstract description 5
- 239000000498 cooling water Substances 0.000 description 24
- 230000008569 process Effects 0.000 description 8
- 238000001802 infusion Methods 0.000 description 6
- 238000005096 rolling process Methods 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000005098 hot rolling Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010835 comparative analysis Methods 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005086 pumping 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
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Images
Classifications
-
- 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
-
- 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 for cooling equipment 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; conveying the first turbid circulating water to a sixth nozzle, and cooling the wrapper roller through a second spraying part; conveying the second turbid circulating water to a plurality of first nozzles, and cooling the inlet of the pinch roll through the plurality of first nozzles; and conveying the first turbid circulating water to a first injection part and an eighth nozzle, cooling the feeding roller through the first injection part, 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 for cooling equipment in the hot-rolled strip steel coiling area.
Background
The hot rolling strip steel refers to strip materials and plates produced in a hot rolling mode, a plurality of recoiling machines in a coiling area of a hot continuous rolling strip steel plant are positioned at the tail end of a finish rolling post laminar cooling roller way, and the hot strip steel after rolling is tightly and completely coiled into a steel coil in a good coiling shape.
At present, in the existing cooling technology of hot rolled strip coiling area equipment, the total amount of cooling water is obtained by adding the maximum water consumption of each coiler, and then according to the total amount of cooling water obtained by adding, the water with the cooling water consumption is conveyed to a plurality of coilers through a conveying pipeline to provide cooling water for the coiling area equipment. However, when a plurality of recoiling machines are alternately used, if 3 recoiling machines are configured, only 1 recoiling machine is in an operating state, and the other 2 recoiling machines are in a system operating condition of a to-be-recoiled state, the total amount of cooling water obtained by adding the maximum water consumption of the 3 recoiling machines is used for supplying water, so that the supplied water amount is larger than the actual water consumption of equipment in a recoiling area, and water resources are wasted.
In summary, the conventional cooling technology for hot rolled strip coiling area equipment has the technical problem of wasting water resources.
Disclosure of Invention
The technical problem to be solved by the invention is to waste water resources.
In order to solve the technical problem, the invention provides a method for cooling equipment in a hot-rolled strip steel coiling area, which comprises the following steps: conveying the first turbid circulating water to a second nozzle, a third nozzle and a fifth nozzle, cooling the upper pinch roll through the second nozzle, cooling the lower pinch roll through the third nozzle, and cooling the 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; conveying the first turbid circulating water to a sixth nozzle, and cooling the wrapper roller through a second spraying part; conveying the second turbid circulating water to a plurality of first nozzles, and cooling the inlet of the pinch roll through the plurality of first nozzles; and conveying the first turbid circulating water to a first injection part and an eighth nozzle, cooling the feeding roller through the first injection part, and cooling the transition roller way through the eighth nozzle.
Further, the pressure of the first turbid circulating water is 0.4MPa to 0.6 MPa; the pressure of the second turbid circulating water is 0.9MPa to 1.0 MPa.
Further, the cooling the wrapper roller by the second spraying part comprises: and cooling the wrapper roller through a first sixth nozzle, a second sixth nozzle and a third sixth nozzle in the second spraying part.
Further, the cooling of the feeding roller by the first injection part comprises: and cooling the feeding roller through a first fourth nozzle and a second fourth nozzle in the first spraying part.
Further, the method further comprises: mounting a first flowmeter on a pipeline between a second stop valve and a second electromagnetic pneumatic valve; mounting a second flow meter on a pipeline between the fourth stop valve and the third electromagnetic pneumatic valve; mounting a third flow meter on the conduit between the eighth shut-off valve and the sixth nozzle; a 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 disposed in the pit, and the second submersible pump is disposed 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: and when the liquid level in the pit is lower than the extremely low level, alarming and closing the first submersible pump and the second submersible pump.
Further, the method further comprises: and 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 turned off, and the first submersible pump and the second submersible pump are turned off.
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 turned off, the first submersible pump is turned on, and the second submersible pump is turned off.
Further, the method further comprises: when the liquid level in the pit is higher than the high level, an alarm is given and the first submersible pump and the second submersible pump are started.
Has the advantages 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 by the second nozzle, a lower pinch roll is cooled by the third nozzle, and a press roll is cooled by 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; conveying the first turbid circulating water to a sixth nozzle, and cooling the wrapper roller through a second spraying part; conveying the second turbid circulating water to a plurality of first nozzles, and cooling the inlet of the pinch roll through the plurality of first nozzles; and conveying the first turbid circulating water to a first injection part and an eighth nozzle, cooling the feeding roller through the first injection part, and cooling the transition roller way through the eighth nozzle. Therefore, 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. When the coiling machine is in a manual or automatic mode, coiling is completed and the winding drum is running, the seventh nozzle cools the outer ring of the steel coil, and after the coil is unloaded and the movable support of the winding drum is closed, the seventh nozzle cools the winding drum. And after the coil is unloaded, the movable support of the winding drum is closed, and the wrapper roller runs close to the winding drum, the second spraying component cools the wrapper roller. And the inlet of the pinch roll is cooled through a plurality of first nozzles so as to directly spray turbid circulating water on the surface of the strip steel at the inlet of the pinch roll. The first injection part cools the feeding roller, and the eighth nozzle cools the transition roller, so that the cooling water consumption for the equipment in the reeling area can be reduced, and the water resource is 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 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 it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a first schematic view of a system for cooling equipment in a hot rolled strip coiling zone according to an embodiment of the present invention;
FIG. 2 is a second schematic diagram of a system for cooling equipment in a hot rolled strip coiling area according to an embodiment of the present invention;
FIG. 3 is a flow chart of a method for cooling equipment in a hot rolled strip coiling area according to an embodiment of the present invention.
Detailed Description
The invention discloses 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 5, a third nozzle 14 and a fifth nozzle 18, an upper pinch roll 34 is cooled through the second nozzle 5, the third nozzle 14 cools a lower pinch roll 37, and the fifth nozzle 18 cools a press roll 35; conveying the first turbid circulating water to the seventh nozzle 23, and cooling the outer ring of the steel coil and the winding drum 42 through the seventh nozzle 23; conveying the first turbid circulating water to a sixth nozzle, and cooling the wrapper roller 40 through a second spraying part; conveying the second turbid circulating water to a plurality of first nozzles 2, and cooling the inlet of the pinch roll through the plurality of first nozzles 2; the first turbid circulating water is conveyed to a first spraying part and an eighth nozzle 26, the first spraying part is used for cooling the feeding roller 36, and the eighth nozzle 26 is used for cooling the transition roller table 45. Thus, when the upper pinch roll 34 and the lower pinch roll 37 are operated and a strip passes through the process of alternately using the plurality of coilers, 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 circumference of the steel coil when the coiler is in a manual or automatic mode, coiling is completed and the winding drum 42 is in operation, and the seventh nozzle 23 cools the winding drum 42 after coil unloading and when the movable support of the winding drum 42 is closed. The second spray assembly cools the wrapper roller 40 after unloading and when the mandrel 42 is actively supported closed and the wrapper roller 40 is running adjacent the mandrel 42. And the inlet of the pinch roll is cooled through a plurality of first nozzles 2 so as to directly spray turbid circulating water on the surface of the strip steel at the inlet of the pinch roll. The first injection part cools the feeding roller 36, the eighth nozzle 26 cools the transition roller table 45, and then the cooling water consumption for the equipment in the reeling area can be reduced, and the water resource is saved. Thereby achieving the technical effect of saving water resources.
In order to describe the method for cooling the equipment in the hot rolled strip steel coiling area in detail so as to support the technical problem to be solved by the invention, in the following embodiment provided by the invention, firstly, a system for cooling the equipment in the hot rolled strip steel coiling area is described in detail through one embodiment, and then, in the process of describing the system for cooling the equipment in the hot rolled strip steel coiling area, the method for cooling the equipment in the hot rolled strip steel coiling area provided by the invention is further led out in a targeted manner so as to achieve the purposes of completeness, clarity and understanding.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention belong to the protection scope of the present invention; the "and/or" keyword referred to in this embodiment represents sum or two cases, in other words, a and/or B mentioned in the embodiment of the present invention represents two cases of a and B, A or B, and describes three states where a and B exist, such as a and/or B, which represents: only A does not include B; only B does not include A; including 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 describing one element or feature's relationship to another element or feature. It will be understood that the spatially relative terms are 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 "lower" would then be oriented "upper" other elements or features. Thus, the exemplary term "below" can encompass both an orientation of above and below. The device may be oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
Also, in embodiments of the invention where an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used in the embodiments of the present invention are for illustrative purposes only and are not intended to limit the present invention.
Example one
Referring to fig. 1 and 2, fig. 1 is a first schematic diagram of a system for cooling equipment in a hot rolled strip coiling area according to an embodiment of the present invention, and fig. 2 is a second schematic diagram of the system for cooling equipment in the hot rolled strip coiling area according to an embodiment of the present invention. The system applied to cooling of the hot rolled strip steel coiling area equipment 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 liquid conveying 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 part, a sixth stop valve 17, a fifth nozzle 18, a seventh stop valve 19, a second injection part, 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 first stop valve 3, the second stop valve 3 and the sixth electromagnetic pneumatic valve 28 are respectively, The first electromagnetic air-operated valve 4, the second nozzle 5, the second liquid supply tube 6, the manual butterfly valve 7, the second stop valve 8, the second electromagnetic air-operated valve 9, the third stop valve 10, the normally open liquid transfer tube 11, the third electromagnetic air-operated valve 12, the fourth stop valve 13, the third nozzle 14, the fifth stop valve 15, the first injection part, the sixth stop valve 17, the fifth nozzle 18, the seventh stop valve 19, the second injection part, the eighth stop valve 21, the fourth electromagnetic air-operated valve 22, the seventh nozzle 23, the ninth stop valve 24, the fifth electromagnetic air-operated valve 25, the eighth nozzle 26, the tenth stop valve 27, and the sixth electromagnetic air-operated valve 28 will be described in detail below:
for the first liquid supply pipe 1, the plurality of first nozzles 2, the first cut 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 cut valve 8, the second electromagnetic pneumatic valve 9, the third cut valve 10, the normally open liquid transport pipe 11, the third electromagnetic pneumatic valve 12, the fourth cut valve 13, the third nozzle 14, the fifth cut valve 15, the first injection part, the sixth cut valve 17, the fifth nozzle 18, the seventh cut valve 19, the second injection part, the eighth cut valve 21, the fourth electromagnetic pneumatic valve 22, the seventh nozzle 23, the ninth cut valve 24, the fifth electromagnetic pneumatic valve 25, the eighth nozzle 26, the tenth cut valve 27, and the sixth electromagnetic pneumatic valve 28:
the plurality of first nozzles 2 are communicated with the first liquid supply pipe 1, the plurality of first nozzles 2 can refer to 1 first nozzle 2, 2 first nozzles 2, 3 first nozzles 2, 4 first nozzles 2 and the like, the plurality of 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 0.9MPa to 1.0 MPa; the first cut-off valve 3 is installed on a pipe between the first supply pipe 1 and the plurality of first nozzles 2; the first solenoid-operated valve 4 is mounted on the pipe between the first shut-off valve 3 and the first nozzle 2; the second nozzle 5 is communicated with a second liquid supply pipe 6, 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; the manual butterfly valve 7 is installed on a pipe between the second nozzle 5 and the second liquid supply pipe 6; the second stop valve 8 is mounted on the pipeline between the manual butterfly valve 7 and the second nozzle 5; the second solenoid-operated 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 the second solenoid 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 mounted on the normally-open infusion tube 11; the fourth stop valve 13 is installed 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 cut-off valve 15 is installed on the pipe between the third nozzle 14 and the second electromagnetic pneumatic valve 9; the first injection part is close to the feeding roller 36 and is connected with the second electromagnetic pneumatic valve 9; the sixth cut-off valve 17 is mounted on the pipe between the first injection part and the second electromagnetic pneumatic valve 9.
A fifth nozzle 18 is close to the pressure roller 35, said fifth nozzle 18 being connected to said second solenoid pneumatic valve 9; the seventh cut-off valve 19 is mounted on the pipe between the fifth nozzle 18 and the second electromagnetic pneumatic valve 9; the second spraying part is close to the wrapper roller 40 and is connected with the manual butterfly valve 7; the eighth cut-off valve 21 is installed on a pipe between the second injection part and the manual butterfly valve 7; the fourth electromagnetic pneumatic valve 22 is mounted on a pipe between the eighth cut-off 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; the ninth cut-off 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 cut-off valve 24 and the seventh nozzle 23.
The eighth nozzle 26 is close to the transition roller table 45, and the eighth nozzle 26 and the second liquid supply pipe 6 are communicated with each other through a pipeline; the tenth cut-off valve 27 is installed on a pipe between the eighth nozzle 26 and the second liquid supply pipe 6; the sixth electromagnetic pneumatic valve 28 is mounted on the conduit between the tenth cut-off valve 27 and the eighth nozzle 26. Wherein the first injection part includes a first fourth nozzle 161 and a second fourth nozzle 162, the first fourth nozzle 161 is connected with the second solenoid pneumatic valve 9, and the second fourth nozzle 162 is connected with the second solenoid pneumatic valve 9. The second spray part includes a first sixth nozzle 201, a second sixth nozzle 202, and a third sixth nozzle 203.
Specifically, the pressure of the turbid circulating water conveyed in the first liquid supply pipe 1 is in the range of 0.9MPa to 1.0MPa, and the pressure of the turbid circulating water conveyed in the second liquid supply pipe 6 is in the range of 0.4MPa to 0.6 MPa. The first stop valve 3 is a stop valve belonging to a forced seal type valve, and the second stop valve 8, the third stop valve 10, the fourth stop valve 13, the fifth stop valve 15, the sixth stop valve 17, the seventh stop valve 19, the eighth stop valve 21, the ninth stop valve 24, and the tenth stop valve 27 are all stop valves. The first nozzle 2 is a nozzle for cooling a position near the nozzle by spraying the turbid circulating water from the nozzle, and the second nozzle 5, the third nozzle 14, the fourth nozzle, the fifth nozzle 18, the second spraying means, the seventh nozzle 23, and the eighth nozzle 26 are all nozzles. The first solenoid-operated valve 4 is an electromagnetic pneumatic valve, which is an industrial device controlled by an electromagnet and is an automation basic element for controlling a fluid, and the second solenoid-operated valve 9, the third solenoid-operated valve 12, the fourth solenoid-operated valve 22, the fifth solenoid-operated valve 25, and the sixth solenoid-operated valve 28 may be all electromagnetic pneumatic valves.
It should be noted that, when cooling of the upper pinch roller 34, the lower pinch roller 37 and the press roller 35 is required, the upper pinch roll 34 can be cooled by spraying the turbid circulating water through the second nozzle 5, the lower pinch roll 37 can be cooled by spraying the turbid circulating water through the third nozzle 14, the press roll 35 is cooled by spraying the turbid circulating water through the fifth nozzle 18, such as when the upper pinch roll 34 and the lower pinch roll 37 are operated, when strip steel passes through, the second nozzle 5 can spray turbid circulating water to cool the upper pinch roll 34 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, then, the fifth cutoff valve 15 is simultaneously opened so that the third nozzle 14 sprays the turbid circulating water to cool the lower pinch roller 37, and the seventh cutoff valve 19 is simultaneously opened so that the fifth nozzle 18 sprays the turbid circulating water to cool the press roller 35.
In addition, when the outer ring of the steel coil and the winding drum 42 need to be cooled, the seventh nozzle 23 sprays the turbid circulating water to cool the outer ring of the steel coil and the winding drum 42, for example, by opening the manual butterfly valve 7, the ninth stop valve 24 and the fifth electromagnetic pneumatic valve 25, so that the seventh nozzle 23 sprays the turbid circulating water to cool the outer ring of the steel coil and the winding drum 42. When the coiler is in the manual or automatic mode, and coiling is completed and the reel drum 42 is in operation, the outer ring of the steel coil is cooled by spraying turbid circulating water through the seventh nozzle 23. After the coil is unloaded and the movable support of the reel 42 is closed, the reel 42 is cooled by spraying turbid circulating water through the seventh nozzle 23.
During the winding process, the fifth electromagnetic pneumatic valve 25 and the ninth cutoff valve 24 are controlled to be open, and the seventh nozzle 23 is controlled to be closed. When the wrapper roller 40 needs to be cooled, the wrapper roller 40 is cooled by the second spraying part spraying the turbid circulating water, for example, by opening the manual butterfly valve 7, the eighth stop valve 21 and the fourth electromagnetic pneumatic valve 22, so that the wrapper roller 40 is cooled by the second spraying part spraying the turbid circulating water. After the coil is unloaded and the reel 42 is movably supported to be closed, and the wrapper roller 40 is operated close to the reel 42, the wrapper roller 40 is cooled by opening the eighth cut-off valve 21 and the fourth electromagnetic pneumatic valve 22 so that the second spraying part sprays the turbid circulating water.
When the pinch roll inlet needs to be subjected to side spraying, the pinch roll inlet is subjected to side spraying cooling by spraying turbid circulating water through the first nozzles 2, for example, by opening the first stop valve 3 and the first electromagnetic pneumatic valve 4, a certain number of first nozzles 2 can directly spray turbid circulating water with the pressure of 0.9MPa to 1MPa on the surface of strip steel in a side spraying mode. When the feeding roller 36 and the transition roller way 45 need to be cooled, the first injection part is used for injecting turbid circulating water to perform spray cooling on the feeding roller 36, the eighth nozzle 26 is used for injecting turbid circulating water to perform spray cooling on the transition roller way 45, and 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 nozzle is used for injecting turbid circulating water to perform spray cooling on the feeding roller 36. The tenth stop valve 27 and the sixth electromagnetic pneumatic valve 28 are opened, so that the eighth nozzle 26 sprays the turbid circulating water to spray and cool the transition roller table 45. In the processes of cooling the upper pinch roll 34, the lower pinch roll 37 and the press roll 35, cooling the outer ring of the steel coil and the winding drum 42, and cooling the wrapper roll 40, turbid circulating water with the pressure intensity ranging from 0.4MPa to 0.6MPa can be adopted, and the turbid circulating water after coiling and cooling flows into the pit through the slag ditch.
It is worth mentioning that the upper pinch roll 34 and the lower pinch roll 37 are arranged at the inlet of the coiler (such as a first coiler 47), the head of the strip is led into the coiler, and the tension of the head, the tail and the coiler is realized through the rotation speed difference with the coiling block 42. The pinch roll device comprises 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 tape head into the coiler and is typically driven by an air cylinder to oscillate. The shutter is driven by a hydraulic cylinder 39 to open and close the front entrance guide door of the coiler. The recoiling machine mainly comprises a frame, a winding drum 42, a wrapper roller 40, an arc-shaped guide plate 43, a movable support, a transmission device and the like. The wrapper roller 40 is subjected to position control and pressure control by a hydraulic servo system to realize automatic pedal wrapper, the wrapper roller 40 is positioned between the swing frame 41 and the hydraulic cylinder 39, the switch plate 46 is positioned between the chute plate 44 and the upper pinch roller 34, and hot continuous rolling coiling cooling adopts rolling line turbid circulating water.
Taking 3 recoiling machines as an example, the cooling water system of each recoiling machine is shown in figure 1, and the cooling water amount of a single recoiling machine is shown in the following table I:
when the cold water outside the transition roller table 45 is not considered, according to the cooling process, when the coiler drum 42 is operated and coiled, the wrapper roller 40 and the outer ring cooling water are both in a closed state, and the flow rate of the feeding roller 36 and the pinch roller cooling is the maximum when the additional flow rate cooling valve is opened. As shown in fig. 1, the amount of cooling water is the maximum when the coiler is operating: qWork by＝Q1+Q2+Q3+Q4+3×Q5+Q6+q7In the above formula, QWork byThe maximum cooling water quantity of the recoiling machine in the working state; q1The amount of water required for cooling the feed roller 36; q2The amount of water required for cooling the lower pinch roll 37; q3The amount of water required for cooling the upper pinch roll 34; q4The amount of water required for cooling the press roll 35; q5The amount of water required for cooling the three wrapper rollers 40; q6The amount of water required for cooling the outer ring or drum 42 of the steel coil; q7The amount of cooling water required for the inlet side spraying.
From the data in Table I above, QWork by＝80m3For a coiler in a state to be coiled, the amount of cooling water is maximum when the reel drum 42 and the wrapper roller 40 of the coiler are both in a cooled state:
in this formula: qTo be rolledIs the maximum cooling water quantity of the coiling machine in a coiling state. When the first recoiling machine 47, the second recoiling machine 48 and the third recoiling machine 49 are considered and are alternately used at the same time and are standby recoiling machines, the maximum total water quantity can be determined by selecting the working condition of the maximum flow. Obviously, the more transition roller tables 45 the strip passes through, the greater the water amount, that is, when the third coiler 49 is in the current coiling state, the first coiler 47 or the second coiler 48 is the standby coiler, and the reels 42 and the auxiliary winding rollers 40 of the two standby coilers are simultaneously in the cooling state, the maximum water amount is:
in this formula: qGeneral assemblyIs the total amount of cooling water for the equipment in the crimping zone; q is the amount of cooling water outside the transition roller table 45 between each section of coiling machine. If the working condition is not known, the total water amount of the first coiling machine 47, the second coiling machine 48 and the third coiling machine 49 is directly added, and the total cooling water amount of the curling region equipment is obtained as follows:
in this formula: qGeneral assembly' is the total cooling water amount of the curling region equipment obtained by adding the maximum water consumption of each cooling position of the coiling machine. The comparative analysis shows that if the working conditions are 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 amount is directly increased by 74 percent. Therefore, the cooling water consumption provided for the equipment in the coiling area can be reduced, and the water resource is saved.
The system applied to cooling of the equipment in the hot rolled strip steel coiling area provided by the first embodiment of the invention further comprises 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 installed on a pipeline between the second stop valve 8 and the second electromagnetic pneumatic valve 9. A second flow meter 30 is mounted on a pipe between the fourth cut-off valve 13 and the third electromagnetic pneumatic valve 12. A third flow meter 31 is installed on a pipe between the eighth cutoff valve 21 and the second injection member. A fourth flow meter 32 is mounted on the conduit between the ninth cut-off valve 24 and the fifth electro-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. The pit can be used for placing turbid circulating water conveyed by a plurality of the first nozzles 2, the second nozzles 5, the third nozzles 14, the first spraying part, the fifth nozzles 18, the second spraying part, the seventh nozzles 23 and the eighth nozzles 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.
Specifically, the first flow meter 29 may measure the flow rate between the second stop valve 8 and the second electromagnetic air-operated valve 9, the second flow meter 30 may measure the flow rate between the fourth stop valve 13 and the third electromagnetic air-operated valve 12, the third flow meter 31 may measure the flow rate between the eighth stop valve 21 and the second injection part, the fourth flow meter 32 may measure the flow rate between the ninth stop valve 24 and the fifth electromagnetic air-operated valve 25, and the fifth flow meter 33 may measure the flow rate between the tenth stop valve 27 and the eighth nozzle 26. Two submersible pumps may be provided in the pit, the first submersible pump may be referred to as the working pump, the second submersible pump may be referred to as the backup pump,
in addition, when the model is designed and 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 the running state, and meanwhile, the pit has a certain volume. The larger the volume of the pit is, the better the pit is, and the larger the volume is, the longer the sewage retention time is easily caused, so that the sediment is hardened and cannot be discharged. Since the actual cooling flow rate of the coil is variable, it cannot be guaranteed that the pump displacement is completely matched therewith. If the model selection flow of the submersible pump is small, the standby pump is started and stopped frequently, and thus the model selection flow of the submersible pump is equivalent to the maximum flow of the coiling cooling statistics. The liquid level meter allocated to the pit can be provided with four control points of an extremely low position, a high position and an extremely high position, and the linkage relationship is as follows: when the liquid in the pit is at a level below the minimum level, an alarm is given and the pump is not allowed to be started, thus preventing the pump from pumping empty. When the liquid in the pit is lower than the low level, the working pump stops in a linkage manner. When the liquid in the pit is higher than the high level, the working pump is started in a linkage manner. When the liquid in the pit is higher than the high level, an alarm is given and a standby pump is started. In addition, because the immersible pump does not operate for a long time, spare part can easily rust and also easily lead to the pump life-span to shorten, can switch over the use to first immersible pump and second immersible pump, if regard first immersible pump as standby pump, regard the second immersible pump as the working pump. According to the working mechanism, the volume of the pit is required to be above the extremely low liquid level to accommodate the cooling water volume for 20 minutes under the limit condition that neither the first submersible pump nor the second submersible pump is started, 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 during the cooling of the coiling. Therefore, the frequent starting and stopping of the submersible pump can be reduced, and the service life of the first submersible pump and the second submersible pump is prolonged.
The invention provides a system for cooling equipment in a hot-rolled strip steel coiling area, which is characterized in that a plurality of first nozzles 2 are communicated with a first liquid supply pipe 1, the plurality of first nozzles 2 are positioned above an inlet of an upper pinch roll 34, and the first liquid supply pipe 1 can supply turbid circulating water with the pressure of 0.9MPa to 1.0 MPa. A 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 solenoid-operated 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 communicated with each other, 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 installed on the pipeline between the manual butterfly valve 7 and the second nozzle 5, the second electromagnetic pneumatic valve 9 is installed on the pipeline between the second stop valve 8 and the second nozzle 5, the third stop valve 10 is installed on the pipeline between the second electromagnetic pneumatic valve 9 and the second nozzle 5, one end of the normally open infusion tube 11 is installed on the 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 installed between the second stop valve 8 and the manual butterfly valve 7. The third electromagnetic air-operated valve 12 is installed on the normally open transfusion tube 11, the fourth stop valve 13 is positioned between the third electromagnetic air-operated 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 air-operated valve 9. A fifth shut-off valve 15 is mounted on the conduit between the third nozzle 14 and the second electro-pneumatic valve 9, the first injection part being close to the feed roller 36 and the first injection part being connected to the second electro-pneumatic valve 9. The sixth cut-off valve 17 is mounted on the pipe between the first injection part and the second electro-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-pneumatic valve 9. A seventh stop valve 19 is mounted on the conduit between the fifth nozzle 18 and the second electro-pneumatic valve 9. The second spraying part is close to the wrapper roller 40 and is connected with the manual butterfly valve 7. The eighth stop valve 21 is installed on the pipe between the second injection part and the manual butterfly valve 7, the fourth electromagnetic pneumatic valve 22 is installed on the pipe 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 table 45, and the eighth nozzle 26 is communicated with the second liquid supply pipe 6 through the pipeline; a tenth cut-off valve 27 is installed on the pipe between the eighth nozzle 26 and the second liquid supply pipe 6; a sixth electromagnetic pneumatic valve 28 is mounted on the conduit between the tenth cut-off valve 27 and the eighth nozzle 26. Thus, when the upper pinch roll 34 and the lower pinch roll 37 are operated and a strip passes through the process of alternately using the plurality of coilers, 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 circumference of the steel coil when the coiler is in a manual or automatic mode, coiling is completed and the winding drum 42 is in operation, and the seventh nozzle 23 cools the winding drum 42 after coil unloading and when the movable support of the winding drum 42 is closed. The second spray assembly cools the wrapper roller 40 after unloading and when the mandrel 42 is actively supported closed and the wrapper roller 40 is running adjacent the mandrel 42. And the inlet of the pinch roll is cooled through a plurality of first nozzles 2 so as to directly spray turbid circulating water on the surface of the strip steel at the inlet of the pinch roll. The first injection part cools the feeding roller 36, the eighth nozzle 26 cools the transition roller table 45, and then the cooling water consumption for the equipment in the reeling area can be reduced, and the water resource is saved. Thereby achieving the technical effect of saving water resources.
In order to explain the method for cooling the hot rolled strip coiling area equipment provided by the invention in detail, the embodiment describes a system for cooling the hot rolled strip coiling area equipment in detail, and based on the same inventive concept, the invention also provides a method for cooling the hot rolled strip coiling area equipment, which is detailed in the following embodiment II.
Example two
Referring to fig. 3, fig. 3 is a flowchart of a method for cooling equipment in a hot rolled strip coiling area according to an embodiment of the present invention, and a second embodiment of the present invention provides a method for cooling equipment in a hot rolled strip coiling area, including the following steps:
step S100 of 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 by the second nozzle 5, cooling the lower pinch roll 37 by the third nozzle 14 and cooling the press roll 35 by the fifth nozzle 18;
the pressure of the first turbid circulating water is 0.4MPa to 0.6 MPa;
specifically, the first turbid circulating water is turbid circulating water fed through the first liquid feed pipe 1, and the upper pinch roller 34 can be cooled by spraying turbid circulating water through the second nozzle 5, the lower pinch roller 37 by spraying turbid circulating water through the third nozzle 14, and the press roller 35 by spraying turbid circulating water through the fifth nozzle 18.
Step S110, conveying the first turbid circulating water to the seventh nozzle 23, and cooling the outer ring of the steel coil and the winding drum 42 by the seventh nozzle 23;
step S120 of conveying the first turbid circulating water to a sixth nozzle, and cooling the wrapper roller 40 by the second spraying means;
the cooling of the wrapper roller 40 by the second spraying means includes: the wrapper roller 40 is cooled by the first sixth nozzle 201, the second sixth nozzle 202 and the third sixth nozzle 203 of the second spraying part.
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 wrapper 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.
A step S130 of conveying the second turbid circulating water to the plurality of first nozzles 2, and cooling the nip roller inlet by the plurality of first nozzles 2;
the pressure of the second turbid circulating water is 0.9MPa to 1.0 MPa.
Specifically, the second turbid circulating water is turbid circulating water transported in the second liquid supply 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 transported to the first spray unit and the eighth nozzle 26, the first spray unit cools the feed roller 36, and the eighth nozzle 26 cools the transition roller table 45.
The cooling of the feeding roller 36 by the first injection component comprises: the feeding roller 36 is cooled by the first and second fourth nozzles 161 and 162 of the first spray unit.
Specifically, the first spray unit may include a first fourth nozzle 161 and a second fourth nozzle 162, and the first fourth nozzle 161 and the second fourth nozzle 162 spray turbid circulating water to cool the feeding roller 36.
The second embodiment of the invention provides a method for cooling equipment in a hot-rolled strip steel coiling area, which further comprises the following steps: a first flow meter 29 is installed on the pipe between the second stop valve 8 and the second electromagnetic pneumatic valve 9; mounting the second flowmeter 30 on the pipe between the fourth cut-off valve 13 and the third electromagnetic pneumatic valve 12; a third flow meter 31 is installed on the pipe between the eighth cutoff valve 21 and the sixth nozzle; a fourth flow meter 32 is installed on the pipeline between the ninth cut-off valve 24 and the fifth electromagnetic pneumatic valve 25; a fifth flow meter 33 is installed on the piping between the tenth cutoff valve 27 and the eighth nozzle 26; the first submersible pump is disposed in the pit, and the second submersible pump is disposed 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. And when the liquid level in the pit is lower than the extremely low level, alarming and closing the first submersible pump and the second submersible pump. And 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 turned off, and the first submersible pump and the second submersible pump are turned off. 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 turned off, the first submersible pump is turned on, and the second submersible pump is turned off. When the liquid level in the pit is higher than the high level, an alarm is given and the first submersible pump and the second submersible pump are started.
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 5, a third nozzle 14 and a fifth nozzle 18, an upper pinch roll 34 is cooled through the second nozzle 5, the third nozzle 14 cools a lower pinch roll 37, and the fifth nozzle 18 cools a press roll 35; conveying the first turbid circulating water to the seventh nozzle 23, and cooling the outer ring of the steel coil and the winding drum 42 through the seventh nozzle 23; conveying the first turbid circulating water to a sixth nozzle, and cooling the wrapper roller 40 through a second spraying part; conveying the second turbid circulating water to a plurality of first nozzles 2, and cooling the inlet of the pinch roll through the plurality of first nozzles 2; the first turbid circulating water is conveyed to a first spraying part and an eighth nozzle 26, the first spraying part is used for cooling the feeding roller 36, and the eighth nozzle 26 is used for cooling the transition roller table 45. Thus, when the upper pinch roll 34 and the lower pinch roll 37 are operated and a strip passes through the process of alternately using the plurality of coilers, 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 circumference of the steel coil when the coiler is in a manual or automatic mode, coiling is completed and the winding drum 42 is in operation, and the seventh nozzle 23 cools the winding drum 42 after coil unloading and when the movable support of the winding drum 42 is closed. The second spray assembly cools the wrapper roller 40 after unloading and when the mandrel 42 is actively supported closed and the wrapper roller 40 is running adjacent the mandrel 42. And the inlet of the pinch roll is cooled through a plurality of first nozzles 2 so as to directly spray turbid circulating water on the surface of the strip steel at the inlet of the pinch roll. The first injection part cools the feeding roller 36, the eighth nozzle 26 cools the transition roller table 45, and then the cooling water consumption for the equipment in the reeling area can be reduced, and the water resource is saved. Thereby achieving the technical effect of saving water resources.
Finally, it should be noted that the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, 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 or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (10)
1. A method for cooling equipment in a hot rolled strip coiling zone, the method comprising:
conveying the first turbid circulating water to a second nozzle, a third nozzle and a fifth nozzle, cooling the upper pinch roll through the second nozzle, cooling the lower pinch roll through the third nozzle, and cooling the 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;
conveying the first turbid circulating water to a sixth nozzle, and cooling the wrapper roller through a second spraying part;
conveying the second turbid circulating water to a plurality of first nozzles, and cooling the inlet of the pinch roll through the plurality of first nozzles;
and conveying the first turbid circulating water to a first injection part and an eighth nozzle, cooling the feeding roller through the first injection part, and cooling the transition roller way through the eighth nozzle.
2. The method of claim 1 applied to cooling of hot rolled strip coiling block equipment, characterized in that:
the pressure of the first turbid circulating water is 0.4MPa to 0.6 MPa;
the pressure of the second turbid circulating water is 0.9MPa to 1.0 MPa.
3. The method for cooling hot rolled strip coiling block equipment as claimed in claim 1, wherein said cooling the wrapper roll by the second spray means comprises:
and cooling the wrapper roller through a first sixth nozzle, a second sixth nozzle and a third sixth nozzle in the second spraying part.
4. The method for cooling hot rolled strip coiling block equipment as claimed in claim 1, wherein said cooling at the feed roll by said first injection means comprises:
and cooling the feeding roller through a first fourth nozzle and a second fourth nozzle in the first spraying part.
5. The method of claim 1 applied to cooling of hot rolled strip coiling block equipment, the method further comprising:
mounting a first flowmeter on a pipeline between a second stop valve and a second electromagnetic pneumatic valve;
mounting a second flow meter on a pipeline between the fourth stop valve and the third electromagnetic pneumatic valve;
mounting a third flow meter on the conduit between the eighth shut-off valve and the sixth nozzle;
a 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 disposed in the pit, and the second submersible pump is disposed in the pit.
6. The method of claim 1 applied to cooling of hot rolled strip coiling block equipment, the method 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.
7. The method of claim 6 applied to cooling of hot rolled strip coiling block equipment, the method further comprising:
and when the liquid level in the pit is lower than the extremely low level, alarming and closing the first submersible pump and the second submersible pump.
8. The method of claim 6 applied to cooling of hot rolled strip coiling block equipment, the method further comprising:
and 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 turned off, and the first submersible pump and the second submersible pump are turned off.
9. The method of claim 6 applied to cooling of hot rolled strip coiling block equipment, the method 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 turned off, the first submersible pump is turned on, and the second submersible pump is turned off.
10. The method of claim 6 applied to cooling of hot rolled strip coiling block equipment, the method further comprising:
when the liquid level in the pit is higher than the high level, an alarm is given and the first submersible pump and the second submersible pump are started.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111390677.7A CN114210746B (en) | 2021-11-23 | 2021-11-23 | Method for cooling equipment in hot rolled strip steel coiling area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111390677.7A CN114210746B (en) | 2021-11-23 | 2021-11-23 | Method for cooling equipment in hot rolled strip steel coiling area |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114210746A true CN114210746A (en) | 2022-03-22 |
| CN114210746B CN114210746B (en) | 2023-11-21 |
Family
ID=80697861
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111390677.7A Active CN114210746B (en) | 2021-11-23 | 2021-11-23 | Method for cooling equipment in hot rolled strip steel coiling area |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114210746B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| JP2001246414A (en) * | 2000-03-01 | 2001-09-11 | Nkk Corp | Device and method for cooling hot steel strip |
| JP2004230436A (en) * | 2003-01-31 | 2004-08-19 | Mitsubishi Heavy Ind Ltd | Cooling equipment for hot-rolled steel strip |
| JP2007152429A (en) * | 2005-11-11 | 2007-06-21 | Jfe Steel Kk | Apparatus and method for cooling hot-rolled steel strip |
| CN101342545A (en) * | 2008-08-21 | 2009-01-14 | 济南钢铁股份有限公司 | Lubrication system of hot-tandem rolling finishing rolling unit |
| CN202461191U (en) * | 2012-03-02 | 2012-10-03 | 常州宝菱重工机械有限公司 | Guide spraying device at inlet of hot-rolled strip steel coiling machine |
| CN107350297A (en) * | 2017-07-12 | 2017-11-17 | 唐山新宝泰钢铁有限公司 | Strip cooling device and strip cooling means |
| CN207383502U (en) * | 2017-09-18 | 2018-05-22 | 河南中烟工业有限责任公司 | A kind of tobacco stem flattener moistens roller water automatic controller |
| CN112916621A (en) * | 2019-12-05 | 2021-06-08 | 上海梅山钢铁股份有限公司 | Energy-saving control method for hot rolling turbid circulating water process |
| 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 |
-
2021
- 2021-11-23 CN CN202111390677.7A patent/CN114210746B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| JP2001246414A (en) * | 2000-03-01 | 2001-09-11 | Nkk Corp | Device and method for cooling hot steel strip |
| JP2004230436A (en) * | 2003-01-31 | 2004-08-19 | Mitsubishi Heavy Ind Ltd | Cooling equipment for hot-rolled steel strip |
| JP2007152429A (en) * | 2005-11-11 | 2007-06-21 | Jfe Steel Kk | Apparatus and method for cooling hot-rolled steel strip |
| CN101342545A (en) * | 2008-08-21 | 2009-01-14 | 济南钢铁股份有限公司 | Lubrication system of hot-tandem rolling finishing rolling unit |
| CN202461191U (en) * | 2012-03-02 | 2012-10-03 | 常州宝菱重工机械有限公司 | Guide spraying device at inlet of hot-rolled strip steel coiling machine |
| CN107350297A (en) * | 2017-07-12 | 2017-11-17 | 唐山新宝泰钢铁有限公司 | Strip cooling device and strip cooling means |
| CN207383502U (en) * | 2017-09-18 | 2018-05-22 | 河南中烟工业有限责任公司 | A kind of tobacco stem flattener moistens roller water automatic controller |
| CN112916621A (en) * | 2019-12-05 | 2021-06-08 | 上海梅山钢铁股份有限公司 | Energy-saving control method for hot rolling turbid circulating water process |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114210746B (en) | 2023-11-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1964943A1 (en) | Entry lock system, web processing installation, and method for using the same | |
| CN105781961A (en) | Process pump unit machine seal cooling water circulation reuse device and application method thereof | |
| CN216779867U (en) | System applied to equipment cooling of hot-rolled strip steel coiling area | |
| CN108547810B (en) | Hydraulic control system of energy-saving grain combine harvester | |
| CN114210746A (en) | Method for cooling equipment in hot-rolled strip steel coiling area | |
| JP3186027B2 (en) | Mold cooling device | |
| CN211010091U (en) | Pump station system for controlling hydropower station disc valve | |
| CN201150945Y (en) | Strip steel cleaning device capable of reducing the loss of alkali liquor | |
| CN101209443B (en) | Coating liquid supplying device | |
| CN109945588A (en) | A kind of coolant circulation system and control method applied on coating machine | |
| CN215790927U (en) | Cutting fluid circulation control system | |
| CN203272283U (en) | Hydraulic system for steel coil conveying trolley | |
| CN211716217U (en) | Oil-gas lubricating system of rolling mill | |
| CN113560348A (en) | Cooling system for coiler drum | |
| CN110344840B (en) | External water circulation system with automatic control for TBM and external water circulation method | |
| CN107725803B (en) | Check valve assembly and pumping and filling pipeline system | |
| JPS5948688B2 (en) | Coolant device for reversible rolling mill | |
| CN214767849U (en) | Quick pressure relief system of cold rolling area tail emulsion | |
| CN104816444B (en) | Asynchronous servo energy-saving all-in-one machine and control method thereof | |
| CN220215507U (en) | Quick head changing device for coating | |
| CN220060663U (en) | Stainless steel flange noise elimination check valve | |
| CN217764063U (en) | Circulating cooling system | |
| CN102619992A (en) | Anti-blocking cooling liquid control valve for processing rack of hydraulic steering machine and application of anti-blocking cooling liquid control valve | |
| CN217108233U (en) | High-pressure throttle valve | |
| CN217249937U (en) | Automatic anticorrosive spraying device of valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |