CN216337757U - Tool for installing blast furnace tuyere blowpipe - Google Patents
Tool for installing blast furnace tuyere blowpipe Download PDFInfo
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- CN216337757U CN216337757U CN202122387308.4U CN202122387308U CN216337757U CN 216337757 U CN216337757 U CN 216337757U CN 202122387308 U CN202122387308 U CN 202122387308U CN 216337757 U CN216337757 U CN 216337757U
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- blowpipe
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- blast furnace
- jack
- corrugated pipe
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Abstract
The utility model relates to a tool for installing a blast furnace tuyere blowpipe, which comprises a tuyere blowpipe (1) connected with a blast furnace wall (9), wherein one end of the tuyere blowpipe (1) is connected with a blowpipe flange (2), the blowpipe flange (2) is connected with a corrugated pipe (4) through a corrugated pipe flange (3), a group of corresponding bolt holes (10) are arranged on the blowpipe flange (2) and the corrugated pipe flange (3), a vertical screw (6) is connected in the bolt holes (10), the lower end of the screw (6) is connected with a base steel plate (7), a jack (8) is fixed on the base steel plate (7), and the upper part of the jack (8) is arranged opposite to the lower surface of the blowpipe flange (2). The utility model has the advantages of eliminating the phenomenon of gas leakage on the sealing surface of the flange, shortening the temporary damping down time of the blast furnace, enabling the blast furnace to be re-ventilated as soon as possible, avoiding secondary damping down of the blast furnace caused by gas leakage, shortening the installation time of the tuyere blowpipe and improving the working efficiency.
Description
Technical Field
The utility model relates to the technical field of metallurgical equipment, in particular to a tool for installing a blast furnace tuyere blowpipe.
Background
The blast furnace tuyere air supply system is one of important blast furnace production systems, and the main equipment comprises an air supply surrounding pipe, an air supply branch pipe and tuyere medium and small equipment. The air supply surrounding pipe is used for supplying high-temperature hot air which is burnt by the hot-blast stove before to the inside of the blast stove through the middle and small sleeves by passing through each air supply branch pipe. The air supply branch pipe comprises a reducing pipe, a straight section pipe, a corrugated pipe and a blowing pipe.
In the blast furnace smelting tapping process, high-temperature hot air passes through a blast furnace surrounding pipe, passes through a reducing pipe, a straight section pipe, a corrugated pipe and a blowpipe which are uniformly distributed on the periphery of a blast furnace tuyere, passes through a small sleeve in the tuyere and is finally conveyed into the blast furnace, and iron ore and the like in the blast furnace are heated and reduced to carry out blast furnace process smelting.
The blast furnace tuyere blast pipe is an important carrier in the blast furnace smelting air supply process. Because high-temperature hot air is often conveyed, the field working condition also has great influence on the service cycle of the tuyere blowpipe, and the tuyere blowpipe can be checked and replaced when the blast furnace is planned to stop blowing each time. When the blast furnace is suddenly stopped for a short time due to the problem of the blowpipe, the requirement on the blowpipe replacement time is higher. Under the general condition, the device is completely disassembled and assembled manually, so that the assembly efficiency is reduced to a great extent, the device has serious constraint on quick air recovery of the blast furnace, and the normal recovery of the furnace condition of the blast furnace is influenced.
Along with the increase of the molten iron yield and the increase of the hot air temperature, the requirements on the tuyere blowpipe are also increased, and the installation time of replacing the blowpipe each time is also higher.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problems of low installation efficiency, easy air leakage and long damping-down time of the existing blast furnace tuyere blowpipe, and provides a tool for installing the blast furnace tuyere blowpipe, which eliminates the phenomenon of gas leakage on a flange sealing surface, shortens the temporary damping-down time of a blast furnace, ensures that the blast furnace can be re-ventilated as soon as possible, avoids secondary damping-down of the blast furnace caused by gas leakage, shortens the installation time of the tuyere blowpipe and improves the working efficiency.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a tool for installing a blast furnace tuyere blowpipe comprises a tuyere blowpipe connected with a blast furnace wall, wherein one end of the tuyere blowpipe is connected with a blowpipe flange, and the blowpipe flange is connected with a corrugated pipe through a corrugated pipe flange and is used for sending high-temperature hot air into the blast furnace;
the blow pipe flange and the corrugated pipe flange are provided with a group of corresponding bolt holes, the bolt holes are internally connected with vertical screw rods, the lower ends of the screw rods are connected with a base steel plate, a jack is fixed on the base steel plate, and the upper portion of the jack faces the lower surface of the blow pipe flange.
Furthermore, the blowpipe flange, the corrugated pipe flange and the base steel plate are all arranged in parallel.
Furthermore, the lower end of the screw is fixed on the base steel plate through a nut, and the upper end of the screw is fixed on the blowpipe flange and the corrugated pipe flange through nuts.
Further, the screw rod is an M48 double-end screw rod, the nut is an M48 nut, and the jack is a 32T mechanical jack.
Furthermore, the jack is arranged in the middle of the base steel plate, and the axis of the jack is parallel to the axis of the blowpipe flange and the axis of the corrugated pipe flange.
According to the technical scheme, the detachable tools are fixed on the blowpipe flange and the corrugated pipe flange, the jack can be directly pressurized by a crowbar or round steel during installation until the top of the jack is contacted with the blowpipe flange, and after fine adjustment, pressurization is continued until the blowpipe flange is tightly contacted with the corrugated pipe flange, so that time and labor are saved, the installation time of the tuyere blowpipe is shortened, the working efficiency is improved, meanwhile, the contact between the two flanges can be enhanced, and the phenomenon of gas leakage on the sealing surface of the flanges is eliminated.
Drawings
Fig. 1 is a schematic structural diagram of a tool for installing a blast furnace tuyere blast pipe of the utility model.
Detailed Description
Example 1
In order that the present invention may be more clearly understood, a tool for the installation of a tuyere lance of a blast furnace according to the present invention will be further described, and the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.
Referring to fig. 1, a tool for installing a blast furnace tuyere blowpipe comprises a tuyere blowpipe 1 connected with a blast furnace wall 9, wherein one end of the tuyere blowpipe 1 is connected with a blowpipe flange 2, and the blowpipe flange 2 is connected with a corrugated pipe 4 through a corrugated pipe flange 3, and is characterized in that:
a group of corresponding bolt holes 10 are arranged on the blowpipe flange 2 and the corrugated pipe flange 3, vertical screws 6 are connected in the bolt holes 10, and the lower ends of the screws 6 are connected with a base steel plate 7 through nuts 5;
a jack 8 is fixed on the base steel plate 7, the jack 8 is arranged in the middle of the base steel plate 7, the axis of the jack 8 is parallel to the axis of the blowpipe flange 2 and the bellows flange 3, and the upper part of the jack 8 is arranged opposite to the lower surface of the blowpipe flange 2;
the blowpipe flange 2, the corrugated pipe flange 3 and the base steel plate 7 are all arranged in parallel.
In this embodiment, the screw 6 is an M48 double-headed screw, the nut 5 is an M48 nut, and the jack 8 is a 32T mechanical jack.
The specific implementation method of the utility model is as follows:
(1) machining to obtain 2M 48 double-head screw rods with the length of about 550mm, 4M 48 high-pressure nuts and 1 base steel plate with the length of 450mm, the width of 300mm and the thickness of 22mm, and purchasing 1 32T mechanical jack;
(2) taking 2M 48 nuts and 2M 48 double-threaded screws, respectively installing the M48 nuts at one end of the M48 double-threaded screw, and hanging the M48 nuts on bolt holes of a corrugated pipe flange and a blowpipe flange;
(3) 1, mounting 1 base steel plate and 2M 48 nuts with a fixed M48 double-thread screw, and fixing;
(4) placing a 32T mechanical jack on the fixed base steel plate;
(5) when the device is used, a crowbar or round steel is used for pressurizing the jack until the top of the jack is contacted with the blowing pipe flange, the blowing pipe metal pad and the asbestos fiber pad are installed, and after fine adjustment is carried out, pressurization is continued until the blowing pipe flange is tightly contacted with the corrugated pipe flange;
(6) a screw of M48, an M48 nut and a wedge-shaped pin are respectively arranged on bolt holes of a blowpipe flange and a corrugated pipe flange and are fastened;
(7) taking down the special tool, aligning the rest 2 bolt holes by using bolts, nuts and wedge pins, uniformly fastening bolts around the blow pipe, and finally hammering the wedge pins tightly by using a sledge hammer.
After the tool is used, the problems that the replacement time of replacing a blast furnace tuyere blowpipe is long, and the flange sealing surface does not run gas are solved, and the problems that secondary blast furnace damping down and furnace conditions are difficult to recover caused by the problem are solved, and the specific economic benefits are calculated as follows:
in 2019: the 2# blast furnace is planned to be overhauled for 6 times, the process is overhauled for 5 times, the blast pipes are installed synchronously according to each overhaul, the tuyere blast pipes are required to be installed for 11 times, and 11 x 0.5=5.5h is saved. The total saving is 6500/24 x 5.5 x 250 x 37.24 ten thousand yuan calculated according to 6500t of molten iron production per day and 250 yuan/t of ton iron profit. No secondary stoppages are caused by gas leakage caused by installation all the year round, and if the loss is calculated according to the 2% occurrence probability, the profit per ton iron is 250 yuan/t, and the expected loss is 2% 11 × 1.5 × 6500/24 × 250 × 2.23 ten thousand yuan. The total savings is about: 37.24+2.23=39.47 ten thousand yuan;
in 2020, the method comprises the following steps: 2# blast furnace is planned to overhaul 5 times, and 11 times is overhauled in technology, overhauls the blowpipe and installs according to the synchronous installation of every time, need install wind gap blowpipe 16 times, practices thrift 16 x 0.5=8 h. The total saving is 6500/24 x 8 x 250 x 54.17 ten thousand yuan calculated according to 6500t of molten iron output per day and 250 yuan/t of ton iron profit; no secondary stoppages are caused by gas leakage caused by installation all the year round, and if the loss is calculated according to the 2% occurrence probability, the profit per ton iron is 250 yuan/t, and the expected loss is 2% 16 × 1.5 × 6500/24 × 250 × 3.25 ten thousand yuan. The total savings is about: 54.17+3.25=57.42 ten thousand yuan;
by reckoning, the two-year total saving is 39.47+57.42=96.89 ten thousand yuan.
In addition to the above embodiments, the present invention may have other embodiments. All technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope of the claims of the present invention.
Claims (5)
1. The utility model provides a instrument for installation of blast furnace tuyere blowpipe, includes wind gap blowpipe (1) that links to each other with blast furnace oven (9), and the one end of wind gap blowpipe (1) even has blowpipe flange (2), and blowpipe flange (2) link to each other its characterized in that through bellows flange (3) and bellows (4):
the blow pipe flange (2) and the corrugated pipe flange (3) are provided with a group of corresponding bolt holes (10), vertical screw rods (6) are connected in the bolt holes (10), the lower ends of the screw rods (6) are connected with a base steel plate (7), a jack (8) is fixed on the base steel plate (7), and the upper portion of the jack (8) faces the lower surface of the blow pipe flange (2).
2. A tool for blast furnace tuyere lance installation according to claim 1, wherein:
the blowpipe flange (2), the corrugated pipe flange (3) and the base steel plate (7) are all arranged in parallel.
3. A tool for blast furnace tuyere lance installation according to claim 1 or 2, wherein:
the lower end of the screw rod (6) is fixed on the base steel plate (7) through a nut (5), and the upper end of the screw rod is fixed on the blowpipe flange (2) and the corrugated pipe flange (3) through the nut (5).
4. A tool for blast furnace tuyere lance installation according to claim 3, wherein:
the screw rod (6) is an M48 double-end screw rod, the nut (5) is an M48 nut, and the jack (8) is a 32T mechanical jack.
5. A tool for blast furnace tuyere lance installation according to claim 1 or 2, wherein:
the jack (8) is arranged in the middle of the base steel plate (7), and the axis of the jack is parallel to the axis of the blowpipe flange (2) and the axis of the corrugated pipe flange (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122387308.4U CN216337757U (en) | 2021-09-30 | 2021-09-30 | Tool for installing blast furnace tuyere blowpipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122387308.4U CN216337757U (en) | 2021-09-30 | 2021-09-30 | Tool for installing blast furnace tuyere blowpipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216337757U true CN216337757U (en) | 2022-04-19 |
Family
ID=81174677
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122387308.4U Active CN216337757U (en) | 2021-09-30 | 2021-09-30 | Tool for installing blast furnace tuyere blowpipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216337757U (en) |
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2021
- 2021-09-30 CN CN202122387308.4U patent/CN216337757U/en active Active
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