CN110938724A - Blast furnace top atomization water-pumping cooling device - Google Patents
Blast furnace top atomization water-pumping cooling device Download PDFInfo
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- CN110938724A CN110938724A CN201911374670.9A CN201911374670A CN110938724A CN 110938724 A CN110938724 A CN 110938724A CN 201911374670 A CN201911374670 A CN 201911374670A CN 110938724 A CN110938724 A CN 110938724A
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- piston
- piston rod
- water
- blast furnace
- cover
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- 238000001816 cooling Methods 0.000 title claims abstract description 21
- 238000000889 atomisation Methods 0.000 title claims abstract description 12
- 238000005086 pumping Methods 0.000 title claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 52
- 238000007789 sealing Methods 0.000 claims abstract description 40
- 230000007246 mechanism Effects 0.000 claims abstract description 18
- 238000005507 spraying Methods 0.000 claims abstract description 11
- 230000000149 penetrating effect Effects 0.000 claims abstract description 3
- 239000007921 spray Substances 0.000 abstract description 24
- 239000000428 dust Substances 0.000 abstract description 14
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 12
- 239000007789 gas Substances 0.000 abstract description 6
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 5
- 238000009692 water atomization Methods 0.000 abstract description 4
- 239000003034 coal gas Substances 0.000 description 5
- 238000010926 purge Methods 0.000 description 5
- 238000010992 reflux Methods 0.000 description 5
- 238000007664 blowing Methods 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 230000005514 two-phase flow Effects 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/002—Evacuating and treating of exhaust gases
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/10—Cooling; Devices therefor
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/22—Dust arresters
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2100/00—Handling of exhaust gases produced during the manufacture of iron or steel
- C21B2100/40—Gas purification of exhaust gases to be recirculated or used in other metallurgical processes
- C21B2100/44—Removing particles, e.g. by scrubbing, dedusting
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention relates to the technical field of blast furnace gas dust removal, in particular to a blast furnace top atomization water-spraying cooling device, wherein a spray nozzle of the blast furnace top atomization water-spraying cooling device can automatically extend out or retract, and the blast furnace is dedusted and cooled by water atomization without using nitrogen. The device has the advantages of cost saving, simple and reliable structure and long service life, adopts water pressure to stretch out, takes back the spring, does not need an external device, does not block the nozzle, and ensures that the whole dust removal system is more stable and efficient; the water inlet sealing device comprises a water inlet flange, a rear end cover, a cylinder body, a fixed flange and a crank sealing mechanism, wherein a piston rod is arranged in the cylinder body, one end of the piston rod, which is inclined to the rear end cover, is connected with a piston, a sealing element is sleeved at the joint of the piston rod and the piston and on the outer side of the piston, a plurality of radial holes are formed in the piston, water inlet pipes are arranged in the piston rod and the piston in a penetrating manner, a water inlet is reserved on the; the outside cover of piston rod is equipped with the spring, and spring one end is connected with the spacing ring, and the other end is connected with the guide ring.
Description
Technical Field
The invention relates to the technical field of blast furnace gas dust removal, in particular to a blast furnace top atomization water-spraying cooling device.
Background
At present, a dry dust removal method is generally adopted for removing dust from coal gas of medium and small blast furnaces. In the production process of the blast furnace, the temperature of blast furnace gas can change greatly along with the fluctuation of the furnace condition of the blast furnace. When the temperature of blast furnace gas is increased rapidly due to abnormal furnace conditions, the high-temperature gas can burn out the cloth bag of the cloth bag dust remover, so that a dust removal system is damaged, and all links of the gas are seriously affected.
In order to prevent the cloth bag from being burnt out, water spray or spray cooling is generally adopted at present in China, and the spray cooling is a cooling method which has higher cooling efficiency, better effect and more energy saving compared with water spray cooling.
The spraying technology adopted at present mainly comprises:
(1) the fixed aerial fog spray gun is characterized in that water atomization and nozzle blowing are carried out by means of nitrogen, the core component of the system is the fixed aerial fog spray gun with water-nitrogen two-phase flow, impact atomization is carried out on water by using nitrogen, and the atomization effect is good.
(2) A combined high-pressure reflux atomizing spray gun is disclosed in No. 1989,3P 22-25, and comprises an outer ring for water supply and an inner ring for reflux, a protective sleeve is arranged on the outermost layer, the spray nozzle is respectively connected with a water supply pipeline and a water return pipeline, when the combined high-pressure reflux atomizing spray gun works, one part of water is atomized in an atomizing chamber and sprayed out from a spray head to form a fog-like particle stream, the other part of water flows back from the spray head through a reflux hole, is collected to a reflux pipe of the inner ring of the spray nozzle and is kept in a water pool, and when the combined.
(3) The structure was made in "steelmaking" No: 2003.5P 88-89.
The biggest difficult problem of spray cooling at present is that the nozzle is easy to block up, leads to spray cooling system work unstable, and is serious to the consumption of nitrogen gas simultaneously, and nitrogen gas use cost is high.
Disclosure of Invention
In order to solve the technical problem, the invention provides the blast furnace top atomization water-pumping cooling device with the spray nozzle capable of automatically extending out or retracting, wherein water atomization is adopted to remove dust and cool the blast furnace, and nitrogen is not used. The cost is saved, the structure is simple and reliable, the service life is long, the water pressure is adopted to stretch out, the spring is retracted, an external device is not needed, the nozzle cannot be blocked, and the whole dust removal system is more stable and efficient.
In order to realize the purpose, the invention is realized by adopting the following technical scheme:
a blast furnace top atomization water-filling cooling device comprises a water inlet flange, a rear end cover, a cylinder body, a fixed flange and a crank cover sealing mechanism, wherein one end of the rear end cover is connected with the water inlet flange, the other end of the rear end cover is connected with the cylinder body, a piston rod is arranged in the cylinder body, one end of the piston rod, which is inclined to the rear end cover, is connected with a piston, a sealing element is sleeved at the joint of the piston rod and the piston and the outer side of the piston, a plurality of radial holes are formed in the piston, a water inlet pipe is arranged in the piston rod and the piston in a through mode, a water inlet communicated with the radial holes is; one end of the piston rod, which is deviated to the rear end cover, is connected with a nozzle; a spring is sleeved outside the piston rod, one end of the spring, which is biased to the rear end cover, is connected with a limiting ring, and the limiting ring is fixedly connected with the cylinder body; one end of the spring, which deviates from the rear end cover, is connected with a guide ring, and the guide ring is fixedly connected with the outer side of the piston rod; and a fixed flange is arranged on the outer side of the cylinder body, and a crank cover sealing mechanism is arranged at one end of the fixed flange deviated from the rear end cover.
In a possible technical scheme, a pressure relief opening is formed in one end, which is biased to the rear end cover, of the sealing element.
In a possible technical scheme, a first sealing ring, a second sealing ring, a third sealing ring and a fourth sealing ring are arranged on the outer side of the sealing element.
In a possible technical scheme, the crank capping mechanism comprises a capping, the edge of the capping is connected with the outer side of the cylinder body through a pin shaft, the bottom end of the capping is connected with one end of a hinge through a pin shaft, and the other end of the hinge is connected with the inner side wall of the cylinder body close to the upper end of the pin shaft through a pin shaft.
Compared with the prior art, the invention has the beneficial effects that:
1. the piston rod and the nozzle which are connected with each other by the piston move forwards under the pushing of water pressure, the crank capping mechanism is automatically opened, the nozzle extends out of the cylinder body to start spraying and purging, the cylinder body is sealed by the crank capping mechanism under the action of elasticity after purging is finished, the spraying nozzle can automatically extend out or retract, the nozzle cannot be blocked, the whole dust removal system is more stable and efficient, and the maintenance cost is saved.
2. The blast furnace is dedusted and cooled by water atomization without using nitrogen. And the cost is saved.
3. The hydraulic spring has the advantages of simple and reliable structure, long service life, capability of extending by adopting water pressure, retraction of the spring, no need of an external device and low cost.
4. The installation is simple and convenient. The spray gun is integral, the fixing flange is connected with the blast furnace by bolts, and the flange at the water inlet of the spray gun is connected with the pipeline, so that the spray gun is simple, easy to assemble and disassemble and convenient to maintain.
5. The nozzle has wide application range, is tried in high-temperature and high-dust environments, and is suitable for different types of nozzles.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural view of the crank capping mechanism.
Reference numerals: 1-a water inlet flange; 2-rear end cap; 3-a piston; 4-a piston rod; 5-cylinder body; 6-a limiting ring; 7-a spring; 8-a guide ring; 9-fixing a flange; 10-a nozzle; 11-a crank capping mechanism; 1101-a first pin; 1102-sealing cover; 1103-a second pin; 1104-a hinge; 1105-a third pin; 12-a water inlet pipe; 13-a seal; 14-a first sealing ring; 15-a second sealing ring; 16-pressure relief port; 17-a third sealing ring; 18-fourth seal ring.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the description of the present invention, it is to be understood that the terms "radial", "upper", "lower", "rear", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
As shown in fig. 1, the atomization water-pumping cooling device for the top of the blast furnace comprises a water inlet flange 1, a rear end cover 2, a cylinder body 5, a fixed flange 9 and a crank capping mechanism 11, wherein the right end of the rear end cover 2 is connected with the water inlet flange 1, the left end of the rear end cover is connected with the right end of the cylinder body 5, a piston rod 4 is arranged inside the cylinder body 5, the right end of the piston rod 4 is connected with a piston 3, a sealing element 13 is sleeved at the joint of the piston rod 4 and the piston 3 and outside the piston 3, a plurality of radial holes are formed in the piston 3, a water inlet pipe 12 is arranged in the piston rod 4 and inside the piston 3 in a penetrating manner, a water inlet communicated with the plurality; the left end of the piston rod 4 is connected with a nozzle 10; a spring 7 is sleeved on the outer side of the piston rod 4, the right end of the spring 7 is connected with a limiting ring 6, and the limiting ring 6 is fixedly connected with the cylinder body 5; the left end of the spring 7 is connected with a guide ring 8, and the guide ring 8 is fixedly connected with the outer side of the piston rod 4; a fixed flange 9 is arranged on the outer side of the cylinder body 5, and a crank capping mechanism 11 is arranged at the left end of the cylinder body 5; water inlet flange 1 links to each other with the interface of intaking, water pressure promotes piston 3, the piston rod 4 that links to each other with piston 3, sealing member 13 and nozzle 10 move left under hydraulic promotion, crank capping mechanism 11 is automatic to be opened, nozzle 10 stretches out outside the cylinder body 5 and begins to spray and sweep, water pressure stops after the sweep, the motive force of piston 3 disappears, piston rod 4 and piston 3 are under the elastic force of spring 7, make nozzle 10 retract in the cylinder body 5, crank capping mechanism 11 seals 5 ports of cylinder body under the elastic force, make nozzle 10 isolated with dust environment, prevent that nozzle 10 from being blockked up by the dust.
In this embodiment, the right end of the sealing member 13 is provided with a pressure relief port 16; when the piston rod 4 and the piston 3 return to the right end under the elastic force of the spring 7, the residual water in the cavity on the right side of the sealing element 13 is squeezed into the pressure relief opening 16, so that the pressure of the residual water when the piston rod 4 returns is reduced, and the nozzle 10 after purging is favorably retracted into the cylinder 5 smoothly; the first sealing ring 14, the second sealing ring 15, the third sealing ring 17 and the fourth sealing ring 18 are arranged on the outer side of the sealing element 13 from right to left.
In this embodiment, as shown in fig. 2, the crank cover mechanism 11 includes a cover 1102, an edge of the cover 1102 is connected to an outer side of the cylinder 5 through a first pin 1101, a bottom end of the cover is connected to one end of a hinge 1104 through a second pin 1103, and another end of the hinge 1104 is connected to an upper end of an inner side wall of the cylinder 5 near the first pin 1101 through a third pin 1105.
The working process of the blast furnace top atomization water-spraying cooling device provided by the embodiment of the invention is as follows: a fixed flange is connected with a blast furnace by adopting bolts, a flange 1 at a water inlet of a spray gun is connected with a water inlet port, a piston 3 is pushed by water pressure, a piston rod 4, a sealing piece 13 and a nozzle 10 which are connected with the piston 3 move leftwards under the pushing of the water pressure, the water pressure enables water flow to be converged into a water inlet pipe 12 through a plurality of radial holes by the water pressure due to the sealing action of a first sealing ring 14, a second sealing ring 15, a third sealing ring 17 and a fourth sealing ring 18, the piston rod 4 drives a guide ring 8 to move leftwards, a spring 7 is stretched, a crank capping mechanism 11 is automatically opened, the nozzle 10 extends out of a cylinder body 5 to start spraying and purging, the water pressure stops after the purging is finished, the pushing force of the piston 3 disappears, the piston rod 4 and the piston 3 enable the nozzle 10 to retract into the cylinder body 5 under the elastic force of the spring 7, the crank capping mechanism 11 seals the port of, preventing the nozzle 10 from being clogged with dust.
The device system is provided with remote and local control, when a local control mode is selected, related parameter setting and operation control are completed on the touch screen, and when a remote control mode is selected, related setting and control operation are completed on an upper computer of a central control room.
The device system is provided with automatic control and manual control modes and can be selected on a touch screen and an upper computer. When the manual control mode is selected, an operator manually starts the water pump, manually opens all the control valves, manually controls the opening number of the spray guns, and adjusts the spray flow to control the temperature of the coal gas. When the automatic control is selected, an operator sets the start-up temperature (settable) and the stop-up temperature (settable) of the system, the blowing period (settable) and the blowing time (settable) according to the cooling characteristics of the blast furnace, the system is automatically started after the temperature of the coal gas reaches the set start-up temperature, the temperature of the coal gas is automatically controlled to be reduced according to the control requirement of a main program, and the system is automatically stopped and is in a standby state when the temperature is lower than the set stop-up temperature. In an automatic state, an operator can perform manual intervention to forcibly start and stop the device and manually control the temperature reduction of the coal gas.
The device can adopt an independent control system with an HMI operation interface, and the core of the control is a PLC controller. The controller receives the temperature in the furnace in real time, and adjusts the opening and closing of the device through temperature comparison so as to adjust the water yield, thereby controlling the temperature in the furnace to be stabilized in an ideal temperature range. The HMI can not only set system parameters, but also display related parameters including water pressure, flow, temperature in the furnace, the number of opened spray guns, historical records of related parameters, fault alarm and the like.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (4)
1. An atomization water-pumping cooling device on the top of a blast furnace is characterized by comprising a water inlet flange (1), a rear end cover (2), a cylinder body (5), a fixed flange (9) and a crank cover sealing mechanism (11), one end of the rear end cover (2) is connected with the water inlet flange (1), the other end is connected with the cylinder body (5), a piston rod (4) is arranged in the cylinder body (5), one end of the piston rod (4) which deviates to the rear end cover (2) is connected with a piston (3), a sealing element (13) is sleeved at the joint of the piston rod (4) and the piston (3) and on the outer side of the piston (3), a plurality of radial holes are arranged on the piston (3), a water inlet pipe (12) is arranged in the piston rod (4) and the piston (3) in a penetrating way, a water inlet communicated with the plurality of radial holes is reserved on the sealing element (13), and the plurality of radial holes enable water flow to be converged into the water inlet pipe (12); one end of the piston rod (4) which is deviated to the rear end cover (2) is connected with a nozzle (10); a spring (7) is sleeved on the outer side of the piston rod (4), one end of the spring (7) which is biased to the rear end cover (2) is connected with a limiting ring (6), and the limiting ring (6) is fixedly connected with the cylinder body (5); one end of the spring (7) deviating from the rear end cover (2) is connected with a guide ring (8), and the guide ring (8) is fixedly connected with the outer side of the piston rod (4); and a fixed flange (9) is installed on the outer side of the cylinder body (5), and a crank cover mechanism (11) is arranged at one end of the cylinder body deviating from the rear end cover (2).
2. The blast furnace top atomizing and water-spraying cooling device as set forth in claim 1, characterized in that a pressure relief port (16) is provided at one end of the sealing member (13) that is biased toward the rear end cover (2).
3. The blast furnace top atomizing and water spraying cooling device as set forth in claim 2, characterized in that a first sealing ring (14), a second sealing ring (15), a third sealing ring (17) and a fourth sealing ring (18) are arranged outside the sealing member (13).
4. The blast furnace top atomizing and water-spraying cooling device as set forth in claim 3, characterized in that the crank cover mechanism (11) comprises a cover (1102), the edge of the cover (1102) is connected with the outer side of the cylinder (5) through a first pin (1101), the bottom end of the cover is connected with one end of a hinge (1104) through a second pin (1103), and the other end of the hinge (1104) is connected with the upper end of the inner side wall of the cylinder (5) close to the first pin (1101) through a third pin (1105).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911374670.9A CN110938724A (en) | 2019-12-27 | 2019-12-27 | Blast furnace top atomization water-pumping cooling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911374670.9A CN110938724A (en) | 2019-12-27 | 2019-12-27 | Blast furnace top atomization water-pumping cooling device |
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| Publication Number | Publication Date |
|---|---|
| CN110938724A true CN110938724A (en) | 2020-03-31 |
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ID=69913623
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911374670.9A Withdrawn CN110938724A (en) | 2019-12-27 | 2019-12-27 | Blast furnace top atomization water-pumping cooling device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113410434A (en) * | 2021-06-18 | 2021-09-17 | 山西贝特瑞新能源科技有限公司 | Production equipment and production method of composite lithium battery negative electrode material |
| CN114345958A (en) * | 2021-12-31 | 2022-04-15 | 浙江精瑞工模具有限公司 | Spray head of water descaling box |
| CN116790833A (en) * | 2023-08-28 | 2023-09-22 | 江苏天立方环保工程有限公司 | Blast furnace gas cooling device |
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| CN201399409Y (en) * | 2009-02-02 | 2010-02-10 | 武汉麦琴斯达电子机械工程有限责任公司 | Automatic telescopic atomization spraying gun |
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| CN211057142U (en) * | 2019-12-27 | 2020-07-21 | 秦皇岛西之立机械设备有限公司 | Blast furnace top atomization water-pumping cooling device |
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2019
- 2019-12-27 CN CN201911374670.9A patent/CN110938724A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010048090A (en) * | 1999-11-25 | 2001-06-15 | 이구택 | Lance for blowing waste scum in blast furnace with closing prevention function |
| US20050121544A1 (en) * | 2003-12-08 | 2005-06-09 | Seann Pavlik | Extendable mister with optional light |
| CN2725306Y (en) * | 2004-09-01 | 2005-09-14 | 武汉麦琴斯达电子机械工程有限责任公司 | Automatic expansion type high temperature anticlogging spray gun |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113410434A (en) * | 2021-06-18 | 2021-09-17 | 山西贝特瑞新能源科技有限公司 | Production equipment and production method of composite lithium battery negative electrode material |
| CN114345958A (en) * | 2021-12-31 | 2022-04-15 | 浙江精瑞工模具有限公司 | Spray head of water descaling box |
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| CN116790833B (en) * | 2023-08-28 | 2024-01-09 | 江苏天立方环保工程有限公司 | Blast furnace gas cooling device |
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Application publication date: 20200331 |
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