CN218486880U - Upper header and hot rolling production line - Google Patents
Upper header and hot rolling production line Download PDFInfo
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- CN218486880U CN218486880U CN202222473746.7U CN202222473746U CN218486880U CN 218486880 U CN218486880 U CN 218486880U CN 202222473746 U CN202222473746 U CN 202222473746U CN 218486880 U CN218486880 U CN 218486880U
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- 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
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Abstract
The utility model discloses an upper header and hot rolling production line, the upper header comprises a water spraying mechanism and a pipe body arranged along the width direction of strip steel, the pipe body is provided with an upper cooling cavity and a lower cooling cavity positioned below the upper cooling cavity, and the pipe body is provided with a first water inlet communicated with the upper cooling cavity, a second water inlet communicated with the lower cooling cavity and a water outlet; one end of the water spraying mechanism is communicated with the upper cooling cavity, and the other end of the water spraying mechanism penetrates through the lower cooling cavity and is arranged below the pipe body. Because the bottom of the upper collecting pipe is cooled by continuous cooling water, the bottom of the upper collecting pipe is always at a lower temperature, frequent thermal expansion and cold contraction cannot occur, the upper collecting pipe cannot crack, and the service life of the upper collecting pipe is prolonged.
Description
Technical Field
The utility model belongs to the technical field of the last collector of steel rolling finish rolling production line, concretely relates to go up collector and hot rolling production line.
Background
The finishing mill group is provided with a strip steel cooling water device which can control the final temperature of strip steel, the strip steel cooling water device consists of an upper collecting pipe and a lower collecting pipe, pipe bodies of the upper collecting pipe and the lower collecting pipe are fixed at the outlet of a mill housing, and the upper collecting pipe and the lower collecting pipe can independently operate and respectively control the temperature of the upper surface and the lower surface of the strip steel. High-pressure cooling water enters the collecting pipe cavity of the pipe body and is sprayed out through the spray pipe to form a fan-shaped cooling surface which is uniformly sprayed to the surface of the strip steel.
At present, the bottom of the upper header with the structure is easy to crack, and the service life of the upper header is shortened.
SUMMERY OF THE UTILITY MODEL
For solving the technical problem, the utility model provides an go up collector and hot rolling production line because the bottom of going up the collector has the cooling water that lasts to cool off for the bottom of going up the collector is in all the time under lower temperature, frequent expend with heat and contract with cold can not appear, goes up the collector and can not appear the fracture problem, has improved the life of going up the collector.
The technical scheme of the utility model is that:
on one hand, the utility model provides an upper header, which comprises a water spraying mechanism and a pipe body arranged along the width direction of strip steel, wherein the pipe body is provided with an upper cooling cavity and a lower cooling cavity positioned below the upper cooling cavity, and the pipe body is provided with a first water inlet communicated with the upper cooling cavity, a second water inlet communicated with the lower cooling cavity and a water outlet; one end of the water spraying mechanism is communicated with the upper cooling cavity, and the other end of the water spraying mechanism penetrates through the lower cooling cavity and is arranged below the pipe body.
In some embodiments, the upper header includes a plurality of water spraying units spaced along a length direction of the pipe body, and the water spraying units include a plurality of water spraying mechanisms spaced along a width direction of the pipe body.
In some embodiments, the water spraying mechanism includes a spraying pipe and a spraying head, one end of the spraying pipe is communicated with the upper cooling cavity, the other end of the spraying pipe passes through the lower cooling cavity and is arranged below the pipe body, and the spraying head is communicated with the other end of the spraying pipe.
In some embodiments, the other end of the water spraying mechanism faces the incoming direction of the strip steel.
In some embodiments, one end of the water spray mechanism is disposed within the upper cooling chamber.
In some embodiments, the pipe body comprises a plurality of enclosing plates, a partition plate and two oppositely arranged end plates, the enclosing plates are connected end to form a closed ring pipe, the two end plates are connected to two ends of the ring pipe to enclose a cavity, and the partition plate is arranged in the cavity to divide the cavity into the upper cooling cavity and the lower cooling cavity;
the first water inlet is arranged on the enclosing plate, the second water inlet and the water outlet are respectively arranged on the two end plates, one end of the water spraying mechanism is connected with the partition plate, and the other end of the water spraying mechanism penetrates through the partition plate and the enclosing plate and is arranged outside the pipe body.
In some embodiments, the upper header further comprises a plurality of anti-collision plates arranged at intervals in sequence along the length direction of the pipe body, the anti-collision plates protrude out of the bottom of the pipe body, and the other end of the water spraying mechanism is not lower than the bottom of the anti-collision plates.
In some embodiments, the number of the surrounding plates is four, two of the surrounding plates are arranged oppositely along the vertical direction, the remaining two of the surrounding plates are arranged oppositely along the horizontal direction, one end, facing the steel strip direction, of the surrounding plate positioned at the top of the four surrounding plates extends out of the pipe body, and the anti-collision plate is connected to one end of the top surrounding plate;
the baffle is connected to two coamings that set up along the horizontal direction relatively.
In some embodiments, the upper header further comprises two trunnions connected to each end of the pipe body.
In a second aspect, the present invention further provides a hot rolling line, comprising the above upper header.
The beneficial effects of the utility model include at least:
the utility model provides an upper collecting pipe which comprises a water spraying mechanism and a pipe body arranged along the width direction of strip steel, wherein the pipe body is provided with an upper cooling cavity and a lower cooling cavity positioned below the upper cooling cavity, and the pipe body is provided with a first water inlet communicated with the upper cooling cavity, a second water inlet communicated with the lower cooling cavity and a water outlet; one end of the water spraying mechanism is communicated with the upper cooling cavity, and the other end of the water spraying mechanism penetrates through the lower cooling cavity and is arranged below the pipe body. The upper header is arranged above the strip steel, and cooling water for cooling the strip steel enters the upper cooling cavity from the first water inlet and is sprayed out of the upper header from the other end of the water spraying mechanism to cool the strip steel; the cooling water for cooling the bottom of the upper collecting pipe enters from the second water inlet and is discharged from the water outlet, and the bottom of the upper collecting pipe is cooled by the continuous cooling water, so that the bottom of the upper collecting pipe is always at a lower temperature, frequent thermal expansion and cold contraction cannot occur, the upper collecting pipe cannot crack, and the service life of the upper collecting pipe is prolonged.
Drawings
FIG. 1 is a schematic structural view of an upper header according to the present embodiment;
fig. 2 is a schematic view of the structure in the direction a of fig. 1.
Fig. 3 is a schematic view of the structure in the direction B of fig. 1.
FIG. 4 is a schematic view of the structure C-C of FIG. 1.
Description of reference numerals:
11-a water spraying mechanism, 111-a spray pipe and 112-a spray head; 20-a pipe body, 21-an upper cooling cavity, 22-a first water inlet, 23-a lower cooling cavity, 24-a second water inlet, 25-a water outlet, 26-a coaming, 27-a clapboard, 28-an anti-collision board and 29-an end board; 30-trunnion.
Detailed Description
In order to make the present application more clearly understood by those skilled in the art to which the present application pertains, the following detailed description of the present application is made with reference to the accompanying drawings.
During production, the upper header pipe is selectively fed with cooling water between the racks according to different plates and rolling processes. In the rolling process of cooling water which is not put into the machine frame, the high-temperature strip steel can bake the bottom of the upper collecting pipe, so that the bottom of the upper collecting pipe is locally heated. When the bottom of the upper header is baked for a long time and the rolling production plan is changed, if the rolling production plan is changed at this time and the strip steel rolling process is required to be thrown into cooling water between racks, the temperature of the bottom of the upper header is rapidly reduced due to the suddenly injected high-pressure cooling water, the bottom of the upper header is cracked under the state of repeated thermal expansion and cold contraction for a long time, the welding position of the spray pipe and the upper header is subjected to open welding, and the service life of the upper header is shortened.
In order to solve the technical problem, the embodiment of the application provides an upper header and a hot rolling production line.
Example one
The embodiment of the application provides an upper header, this upper header is equipped with the cooling chamber and sets up the lower cooling chamber in upper cooling chamber below, the cooling chamber continuously lets in the cooling water down, cool off the bottom of upper header, it lets in the cooling water according to rolling technology needs to go up the cooling chamber, cool off the belted steel, make the bottom of upper header all can cool off when having the production demand and not having the production demand, the expend with heat and contract with cold repeatedly can not appear, avoid upper header bottom fracture, under the prerequisite of having guaranteed belted steel production cooling demand, the life of upper header has been improved.
Referring to fig. 1 to 4, the upper header provided in the embodiment of the present application includes a water spraying mechanism 11 and a pipe body 20 disposed along a width direction of the strip steel, the pipe body 20 is provided with an upper cooling cavity 21 and a lower cooling cavity 23 located below the upper cooling cavity 21, the pipe body 20 is provided with a first water inlet 22, a second water inlet 24 and a water outlet 25, the first water inlet 22 is communicated with the upper cooling cavity 21, and the second water inlet 24 and the water outlet 25 are both communicated with the lower cooling cavity 23; one end of the water spraying mechanism 11 is communicated with the upper cooling cavity 21, and the other end of the water spraying mechanism 11 passes through the lower cooling cavity 23 and is arranged below the pipe body 20. The upper header is arranged above the strip steel, and cooling water for cooling the strip steel enters the upper cooling cavity 21 from the first water inlet 22 and is sprayed out of the upper header from the other end of the water spraying mechanism 11 to cool the strip steel; the cooling water for cooling the bottom of the upper collecting pipe enters from the second water inlet 24 and is discharged from the water outlet 25, and the bottom of the upper collecting pipe is cooled by the continuous cooling water, so that the bottom of the upper collecting pipe is always at a lower temperature, frequent thermal expansion and cold contraction cannot occur, the upper collecting pipe cannot crack, and the service life of the upper collecting pipe is prolonged. The upper cooling chamber 21 can be opened intermittently with high-pressure cooling water, and the lower cooling chamber 23 can be introduced with low-pressure cooling water which is always open.
In some embodiments, the upper header includes a plurality of water spraying units spaced along the length direction of the tubular bodies 20, and the water spraying units include a plurality of water spraying mechanisms 11 spaced along the width direction of the tubular bodies 20, so as to ensure the cooling uniformity of the strip in the width direction, thereby improving the product quality of the strip.
In some embodiments, the heights of the other ends of the plurality of water spraying mechanisms 11 of the water spraying unit are sequentially reduced along the running direction of the strip steel; the heights of one ends of a plurality of water spraying mechanisms 11 of the water spraying unit are sequentially reduced along the running direction of the strip steel.
Specifically, in some embodiments, the water spraying mechanism 11 includes a nozzle 111 and a nozzle 112, one end of the nozzle 111 is connected to the upper cooling chamber 21, the other end of the nozzle 111 passes through the lower cooling chamber 23 and is disposed below the tube 20, and the nozzle 112 is connected to the other end of the nozzle 111. The water spraying mechanism 11 may be another mechanism, and is not particularly limited herein.
In some embodiments, the other end of the water spraying mechanism 11 faces the incoming direction of the strip steel, and the cooling water sprayed by the water spraying mechanism 11 does not remain on the strip steel after the strip steel is cooled, so that the cooling uniformity of the strip steel is ensured. If the water spraying mechanism 11 is arranged perpendicular to the strip steel, the water sprayed by the water spraying mechanism 11 can remain on the strip steel, the temperature of the strip steel part with the remaining water is lower than that of other parts, the cooling uniformity of the strip steel is poor, and the quality of the strip steel is influenced.
In some embodiments, one end of the water spraying mechanism 11 is disposed in the upper cooling chamber 21, so that the impurities in the cooling water deposited on the bottom wall of the cooling chamber will not enter into the water spraying mechanism 11, thereby preventing the water spraying mechanism 11 from being blocked.
Specifically, in some embodiments, the tubular body 20 comprises a plurality of enclosures 26, a plurality of enclosures 26 connected end to form a closed loop, two end plates 29 connected to opposite ends of the loop to enclose a chamber, and a partition 27 disposed within the chamber to divide the chamber into an upper cooling chamber 21 and a lower cooling chamber 23; the enclosing plate 26 is provided with a first water inlet 22, the two end plates 29 are respectively provided with a second water inlet 24 and a second water outlet 25, one end of the water spraying mechanism 11 is connected with the partition plate 27, and the other end of the water spraying mechanism 11 passes through the partition plate 27 and the enclosing plate 26 and is arranged outside the pipe body 20. The water outlet 25 can be arranged on the operation side, the second water inlet 24 is arranged on the transmission side, the second water inlet 24 and the water outlet 25 are respectively communicated with a water inlet pipe and a water outlet pipe, and the water outlet pipe is communicated with the slag sluiceway.
In some embodiments, the upper header further comprises a plurality of anti-collision plates 28 sequentially arranged along the length direction of the pipe body 20 at intervals, the anti-collision plates 28 protrude from the bottom of the pipe body 20, and the other end of the water spraying mechanism 11 is not lower than the bottom of the anti-collision plates 28. The anti-collision plates 28 can be arranged perpendicular to the strip steel, the anti-collision plates 28 and the water spraying units can be arranged in a staggered manner, that is, the anti-collision plates 28, the water spraying units and the anti-collision plates 28 … are arranged in sequence, and one water spraying unit is arranged between the two anti-collision plates 28, but in other embodiments, a plurality of water spraying units can be arranged between the two anti-collision plates 28, which is not limited herein.
Specifically, in some embodiments, the enclosure plates 26 are four, two enclosure plates 26 are disposed opposite to each other in the vertical direction, the remaining two enclosure plates 26 are disposed opposite to each other in the horizontal direction, the top enclosure plate 26 of the four enclosure plates 26 extends out of the tube body 20 toward the end of the strip steel going direction, and the anti-collision plate 28 is connected to one end of the top enclosure plate 26; the partition 27 is attached to two enclosing plates 26 which are oppositely arranged in the horizontal direction. The relative setting of bounding wall 26 can improve the stability of body 20, and the bounding wall 26 of bottom and the bounding wall 26 of lateral part can formula structure as an organic whole, and in the installation, earlier connect bottom bounding wall 26 and lateral part bounding wall 26, then connect baffle 27 on two relative bounding walls 26 that set up along the horizontal direction, connect lateral part bounding wall 26 in the bounding wall 26 of top again, connect crashproof board 28 in lateral part bounding wall 26, top bounding wall 26 and bottom bounding wall 26 at last. The tube body 20 has a length of about 2.5m, a width of 0.5-1m and a thickness of about 100mm and is manufactured by welding.
In some embodiments, the upper header further comprises two trunnions 30 connected to the ends of the tube 20, respectively, for connection to a steel mill stand.
The last header that this application embodiment provided has lower cooling chamber 23, and cooling water is in normally open state under normal condition in lower cooling chamber 23, therefore whatever type of specification steel grade, always has cooling water to pass through in the lower cooling chamber 23, makes the header bottom long-term lower temperature that keeps, has avoided the problem that spray tube 111 bottom caused the fracture because of the thermal barrier shrinkage. Because one end of the spray pipe 111 extends out of the partition plate 27, impurities in the cooling water are precipitated on the partition plate 27 and cannot enter the spray pipe 111, the nozzle blockage is reduced, the service life of the upper header of the cooling water between the racks is prolonged, the smooth operation of a hot rolling production line is ensured, and the equipment maintenance cost is reduced. The novel structure is simple, materials are easy to select, and the novel structure can be widely popularized in the cooling water pipe between the hot rolling frames.
According to the current 7 upper headers in the hot rolling production line finishing area of a certain steel mill, the headers are replaced once every 6 months, the service life is prolonged by 2 years by changing the headers into novel headers, and economic benefits 7 x 20000 x 4=56 ten thousand yuan can be created for the company every year. If the device is popularized and applied, the social benefit is remarkable.
Example two
Based on the same technical concept as the first embodiment, the embodiment of the application provides a hot rolling production line, the upper collecting pipe cannot crack, and the service life of the upper collecting pipe is prolonged.
The hot rolling production line provided by the embodiment of the application comprises the upper header of the first embodiment. The fixing seat on the hot rolling production line is matched with the fixing trunnion 30 of the upper header to fix the cooling water pipe between the whole machine frames at the outlet of the mill housing.
While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (10)
1. An upper header is characterized by comprising a water spraying mechanism and a pipe body arranged along the width direction of strip steel, wherein the pipe body is provided with an upper cooling cavity and a lower cooling cavity positioned below the upper cooling cavity, and the pipe body is provided with a first water inlet communicated with the upper cooling cavity, a second water inlet communicated with the lower cooling cavity and a water outlet; one end of the water spraying mechanism is communicated with the upper cooling cavity, and the other end of the water spraying mechanism penetrates through the lower cooling cavity and is arranged below the pipe body.
2. The upper header as claimed in claim 1, wherein the upper header includes a plurality of water spray units provided at intervals in a length direction of the tube body, the water spray units including a plurality of the water spray mechanisms provided at intervals in a width direction of the tube body.
3. The upper header as claimed in claim 1, wherein the water spray mechanism comprises a spray pipe and a spray head, one end of the spray pipe is connected to the upper cooling chamber, the other end of the spray pipe passes through the lower cooling chamber and is disposed below the pipe body, and the spray head is connected to the other end of the spray pipe.
4. The upper header as claimed in any one of claims 1 to 3, wherein the other end of the water spray mechanism is directed toward the incoming direction of the strip.
5. The upper header of any one of claims 1-3, wherein one end of the water spray mechanism is disposed within the upper cooling chamber.
6. The upper header according to claim 5 wherein said tube body comprises a plurality of said headers connected end to form a closed loop, and two oppositely disposed end plates connected to opposite ends of said loop to enclose a chamber, said baffle being disposed within said chamber to divide said chamber into said upper cooling chamber and said lower cooling chamber;
the first water inlet is arranged on the enclosing plate, the second water inlet and the water outlet are respectively arranged on the two end plates, one end of the water spraying mechanism is connected with the partition plate, and the other end of the water spraying mechanism penetrates through the partition plate and the enclosing plate and is arranged outside the pipe body.
7. The upper header as claimed in claim 6, further comprising a plurality of collision-preventing plates provided at intervals in sequence along the length direction of the pipe body, the collision-preventing plates protruding from the bottom of the pipe body, the other end of the water spray mechanism being not lower than the bottom of the collision-preventing plates.
8. The upper header according to claim 7 wherein said baffle is four, two of said baffles being vertically opposed and the remaining two of said baffles being horizontally opposed, the top one of said four baffles extending out of said tube toward the end of said strip that is oriented toward the direction of travel, said header being connected to one end of said top baffle;
the baffle is connected to two coamings which are oppositely arranged along the horizontal direction.
9. The upper header as claimed in any one of claims 1 to 3, further comprising two trunnions connected to both ends of the pipe body.
10. A hot rolling line comprising the upper header of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222473746.7U CN218486880U (en) | 2022-09-19 | 2022-09-19 | Upper header and hot rolling production line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222473746.7U CN218486880U (en) | 2022-09-19 | 2022-09-19 | Upper header and hot rolling production line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218486880U true CN218486880U (en) | 2023-02-17 |
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ID=85190882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222473746.7U Active CN218486880U (en) | 2022-09-19 | 2022-09-19 | Upper header and hot rolling production line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218486880U (en) |
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2022
- 2022-09-19 CN CN202222473746.7U patent/CN218486880U/en active Active
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