CN113462905A

CN113462905A - Water-cooling movable smoke hood of horizontal side-blown converter

Info

Publication number: CN113462905A
Application number: CN202110866824.7A
Authority: CN
Inventors: 王明明; 刘大方; 钟忠; 舒波; 汤家道; 朱江; 于海波; 毛庆; 宋毅; 吴华; 易光明; 腾顺高; 岳晓华
Original assignee: Yunnan Copper Co ltd Southwest Copper Branch
Current assignee: Yunnan Copper Co ltd Southwest Copper Branch
Priority date: 2021-07-29
Filing date: 2021-07-29
Publication date: 2021-10-01
Anticipated expiration: 2041-07-29
Also published as: CN113462905B

Abstract

The invention discloses a water-cooling movable smoke hood of a horizontal side blown converter, which comprises: the left side and the right side of the smoke blocking cover body are provided with rollers; the cooling chamber is arranged in the smoke blocking hood body and is communicated with a first hose for flowing cooling water and a second hose for flowing cooling water; a clearance channel is arranged on one side, facing the feeding hole, of the smoke blocking cover body, a clearance opening is formed in the lower side surface of the clearance channel, and when the feeding hole is closed, the clearance channel surrounds the outer side of the feeding hole; and the wind shielding assembly is arranged at the clearance opening of the smoke shielding cover body and used for opening or closing the clearance opening. The water-cooling movable smoke hood of the invention avoids the collision with metal adhesive substances protruding out of the converter shell at the furnace mouth when the converter is shaken, and solves the problem that the environment is seriously polluted because the suddenly increased high-concentration SO2 smoke escapes from the inner fixed smoke hood due to the pulling of the movable smoke hood.

Description

Water-cooling movable smoke hood of horizontal side-blown converter

Technical Field

The invention relates to the field of metallurgical equipment, in particular to a water-cooling movable smoke hood of a horizontal side blown converter.

Background

The horizontal side-blown converter (also called PS converter, hereinafter referred to as converter) is the main equipment for processing matte in copper-nickel smelting to obtain crude copper and processing low-nickel matte to obtain high-nickel matte, the converter has mature and reliable process, simple and stable equipment and operation, outstanding impurity removal capability, low investment and production cost and strong capability of processing cold charge or scrap copper, and at present, the converter is still the mainstream equipment used in copper-nickel smelting plants at home and abroad. However, when the converter is shaken (during the process of rotating the converter mouth between the blowing position and the feeding position in production), the environmental protection problem caused by serious SO2 flue gas leakage is generally difficult to solve, and the specific reasons are described as follows:

as shown in FIG. 1, FIG. 2 and FIG. 3, the conventional configuration of the horizontal side-blown converter and the flue gas collecting equipment is shown. As shown in fig. 1, the fume collecting device of the converter 3 mainly comprises an outer layer fume hood 1 and an inner layer fixed fume hood 2, wherein a feed inlet 22 is formed on the inner layer fixed fume hood 2, and when a converter mouth of the converter 3 turns to the feed inlet 22, the converter 3 is conveniently fed through the feed inlet 22. For convenient structural description, the direction that the relative position of outer petticoat pipe 1 and the fixed petticoat pipe 2 of inlayer belongs to is fore-and-aft direction, and outer petticoat pipe 1 is located the front side, and the fixed petticoat pipe 2 of inlayer is located the rear side, and the vertical direction of converter opening orientation is last. A movable smoke hood 20 (also called a sealing trolley) is glidingly arranged on the inner fixed smoke hood 2, and the movable smoke hood 20 is used for opening or closing the feed inlet 22.

As shown in fig. 1, when the converter 3 is converting, the movable hood 20 slides to the position of the feed inlet 22 to close the feed inlet 22, at this time, the movable hood 20 is at the lower limit station, and the movable hood 20 and the inner fixed hood 2 are integrated and cover the converter 3, only the second channel 21 formed on the inner fixed hood 2 is used for receiving the high-concentration SO2 flue gas (process flue gas) discharged from the converter mouth, and the flue gas is used for producing acid through the second channel 21 in the inner fixed hood 2 and the waste heat boiler and other devices. As shown in fig. 2, when the converter 3 is shaken, the movable hood 20 is usually in a state of being driven by a power system to be pulled upwards, at this time, because the movable hood 20 fails to block the feed inlet 22 and separates the flue gas in the inner fixed hood, the flue gas ejected from the furnace mouth 31 enters the outer hood 1 through the feed inlet 22, the flue gas is mainly collected by the outer hood 1, and the flue gas is sent to the environment-friendly dedusting and desulfurization system through the first channel 11 in the outer hood 1 to be treated and discharged after reaching the standard.

In each link of the production operation of the converter 3, the amount of flue gas leaking during the operation of the converter is usually the largest, the concentration of SO2 is the highest, and the environment is seriously polluted, which is specifically described as follows: the furnace swinging angle range of the converter 3 is generally about 60 degrees, and the two situations that the blowing air hole 30 swings out of the melt or swings into the molten copper are divided into two situations, when the blowing air hole 30 swings out, the melt reaches a safety position (a large converter generally rotates from the blowing position to 0 degrees anticlockwise to 45 degrees), the air hole air valve is closed, and then the converter mouth reaches the charging position by rotating 15 degrees; when the converter is shaken, the converter 3 rotates from the 60-degree position to the 45-degree position clockwise, the valve of the air hole 30 is opened, and the copper liquid is shaken in to start converting after the air pressure value is reached. To prevent the wind hole 30 from being back-flowed by the melt, the furnace shaking process cannot close the wind hole, and the furnace mouth 31 will be sprayed toward the notch 22 area for about 15 secondsTime of day smoke, and during this process, the movable hood 20 fails to effectively seal the gap 22 area for two reasons, one of which is: in normal blowing, after the traditional movable hood 20 closes the feed inlet 22 at the lower limit station, a clearance of no more than 30mm is designed between the front end of the traditional movable hood 20 and the converter 3, and in the process of swinging the converter, the movable hood 20 is lifted upwards to form a clearance 23 of no less than 300mm between the front end of the traditional movable hood 20 and the converter 3, so that the clearance 23 is avoided from the metal adhesive 32 which is often protruded on the shell of the converter 3 at the converter opening 31 (see fig. 3); the second step is as follows: if the sealing trolley 20 is not moved upwards in the furnace swinging process, the furnace mouth 31 is directly opposite to the fire blocking surface of the movable smoke hood 20, a large amount of smoke wraps some high-temperature melt and is sprayed out from the furnace mouth, splashed objects are easy to adhere to the movable smoke hood 20 made of heat-resistant cast steel, the heat transfer capacity of the heat-resistant cast steel movable smoke hood 20 to the high-temperature splashed objects is low, the high-temperature splashed objects cannot be rapidly cooled and crisp to fall off, overlarge agglomerates are easy to form, and the movable smoke hood 20 is difficult to clean, so that the inner-layer fixed smoke hood 2 is easy to damage in the pulling process of the movable smoke hood 20. Therefore, in most cases, when the operator shakes the oven, the movable hood 20 is often pulled away from the oven for safety, SO that the flue gas emitted from the oven opening enters the first channel 11 of the outer hood 1 in a large amount, and the flue gas with high concentration SO2 (the flue gas concentration in the hearth exceeds 100000 mg/Nm) is increased suddenly³) The smoke exhaust gas is difficult to be timely exhausted to the environment-friendly desulfurization system and easy to escape to the outside of the outer smoke hood 1, so that the environment is easily seriously polluted, and meanwhile, the production pressure and the treatment cost of the environment-friendly desulfurization system are also increased.

Therefore, in the process of the furnace rocking operation, when the opening degree of the traditional movable smoke hood 20 to the feed inlet 22 is too small, the movable smoke hood 20 is easy to collide with the metal adhesive 32 protruding from the shell of the converter 3 at the furnace mouth 31, and meanwhile, in order to prevent the movable smoke hood 20 from blocking smoke ejected from the furnace mouth 31, the movable smoke hood 20 needs to be pulled open due to the fact that the movable smoke hood 20 is easy to adhere large splashed objects to form blocks and the inner-layer fixed smoke hood 2 is easy to damage in the pulling process; however, under the condition of pulling the movable smoke hood 20 open, the suddenly increased high-concentration SO2 smoke is not easy to be collected by the outer smoke hood 1 in time and is exhausted to the desulfurization system, and is easy to escape to the outside of the outer smoke hood 1 to cause serious pollution to the environment, and the production pressure and the cost of the environment-friendly treatment system are increased.

Therefore, the prior art is still to be improved.

Disclosure of Invention

In view of the above-mentioned shortcomings of the prior art, the present invention provides a water-cooled movable hood for a horizontal side-blown converter (hereinafter referred to as water-cooled movable hood), which solves the problems that the movable hood in the prior art is liable to collide with a metal adhesive protruding from a converter shell at a converter mouth, and the movable hood needs to be pulled open to prevent the adhesive sprayed on the movable hood from a furnace melt from damaging related equipment, SO that high-concentration SO2 flue gas with a sudden increment escapes from an inner fixed hood, thereby causing serious environmental pollution.

The technical scheme of the invention is as follows:

the utility model provides a water-cooling activity petticoat pipe for slide and open or seal the feed inlet on the fixed petticoat pipe of inlayer of horizontal side blown converter, its characterized in that, water-cooling activity petticoat pipe includes:

the cigarette-blocking cover body is provided with rollers on the left side and the right side;

the cooling chamber is arranged in the smoke blocking hood body and communicated with a first hose for flowing cooling water in and a second hose for flowing cooling water out;

a clearance channel is arranged on one side, facing the feed inlet, of the smoke blocking cover body, a clearance opening is formed in the lower side surface of the clearance channel, and when the feed inlet is closed, the clearance channel surrounds the outer side of the feed inlet; and

the wind shielding assembly is arranged at the clearance avoiding opening of the smoke shielding body and used for opening or closing the clearance avoiding opening.

Further, the wind shielding assembly comprises a driving part and a wind shielding door plate;

the driving part includes: the cylinder is arranged on the smoke blocking cover body;

the hinge piece is hinged to the smoke blocking cover body, one end of the hinge piece is connected to the piston shaft of the air cylinder, and the wind blocking door plate is connected to the other end of the hinge piece;

the air blocking door plate is driven by the hinge piece to turn over and open or close the clearance opening.

Furthermore, the driving part also comprises a connecting rod, one end of the connecting rod is connected with the piston shaft of the cylinder, and the other end of the connecting rod is hinged with the hinge piece;

the two driving parts are arranged on the smoke blocking cover body and are respectively connected with the left end and the right end of the wind blocking door plate.

Further, after the clearance opening is opened, the air blocking door plate stays at the upper side of the cooling chamber.

Further, the water-cooling movable smoke hood further comprises:

the first cover body steel pipe is fixedly arranged on the smoke blocking cover body;

the second cover body steel pipe is fixedly arranged on the smoke blocking cover body;

one end of the first cover body steel pipe and one end of the second cover body steel pipe are respectively connected to the air pipe connector of the air cylinder through branch hoses.

Further, the smoke blocking hood body includes: the fire-blocking inner plate, the edge sealing plate, the face plate and the side sealing plate;

the edge sealing plate is arranged on the side surface of the fire blocking inner plate, the panel is arranged on the edge sealing plate, and the fire blocking inner plate, the panel and the edge sealing plate enclose the cooling chamber;

the side sealing plates are arranged around the edge of the fire blocking inner plate and enclose the clearance channel.

Further, the lower surface of the fire blocking inner plate is bent towards the lower end at one end far away from the clearance opening to form an arc-shaped surface, and the arc-shaped surface is connected with the side sealing plates at two sides and seals one end of the clearance channel far away from the clearance opening;

and the gap distance between the lower surface of the fire-blocking inner plate at the clearance opening and the outer surface of the converter shell is 300 +/-20 mm.

Further, the water-cooling movable smoke hood further comprises: the water inlet pipe and the water outlet pipe are respectively positioned at the left side and the right side of the cooling cavity;

one end of the water inlet pipe is connected with the cooling chamber, and the other end of the water inlet pipe is communicated with the first hose;

one end of the water outlet pipe is connected with the cooling cavity, and the other end of the water outlet pipe is communicated with the second hose;

the opening end of the water outlet pipe in the cooling cavity and the opening end of the water inlet pipe in the cooling cavity are respectively positioned at the upper side and the lower side of the cooling cavity;

the first hose is connected with a cooling water pipeline, and the cooling water pipeline is used for cooling water to enter the cooling chamber from the outside;

the second hose is connected with a drainage pipeline, and the drainage pipeline is used for discharging cooling water to the outside of the cooling chamber.

Furthermore, a track is arranged on one side, facing the outer smoke hood, of the inner fixed smoke hood, and the roller is located on the track and slides;

the water-cooling activity petticoat pipe still includes:

the driving end connecting lug is arranged on the rear side of the smoke blocking cover body and used for being connected with a driving mechanism and driving the smoke blocking cover body to slide.

In one scheme, an outer-layer smoke hood is arranged on one side, away from the inner-layer fixed smoke hood, of the feed inlet;

the cooling water pipeline with the link of first hose the drainage pipe with the link of second hose all is fixed to be set up the outside front side position of outer petticoat pipe.

Further, a hose guard plate is arranged on the smoke blocking cover body and used for supporting the first hose or the second hose;

the guard plate bracket is connected to the edge sealing plates on the left side and the right side;

the hose guard plate is arc-shaped in outline.

In another scheme, an outer-layer smoke hood is arranged on one side, away from the inner-layer fixed smoke hood, of the feed inlet;

the cooling water pipeline is used for connecting the connecting end of the first hose and the connecting end of the drainage pipeline is used for connecting the second hose, and the cooling water pipeline and the drainage pipeline are both fixed outside the inner-layer fixed smoke hood and are positioned on the rear side of the outer-layer smoke hood;

the water inlet pipe is connected with a water inlet extending steel pipe, and the water inlet extending steel pipe is connected with the first hose;

the water outlet pipe is connected with a water outlet extending steel pipe, and the water outlet extending steel pipe is connected with the second hose;

the water inlet extending steel pipe and the water outlet extending steel pipe extend towards the sliding direction of the smoke blocking cover body.

Has the advantages that: compared with the prior art, the water-cooling movable smoke hood of the horizontal side-blown converter provided by the invention has the advantages that the smoke hood body can move and the feed inlet is opened or closed by arranging the rollers at the left side and the right side of the smoke hood body. Set up cooling chamber and configuration hose in keeping off the petticoat pipe is internal, can water-cooling activity petticoat pipe static state and during sliding state introduce, draw forth its cooling chamber with external cooling water, form forced circulation water-cooling, follow the fire door during messenger shakes and pastes keep off the quick cold fragile drop of high temperature splash thing towards fire door one side on the petticoat pipe body, and the difficult big caking influence that forms water-cooling activity petticoat pipe operation is used, at the rocking furnace in-process like this, the operation workman can transfer and cover the feed inlet with keeping off the petticoat pipe body, needn't worry to keep off the great splash thing caking of the easy adhesion of the petticoat pipe body, leads to the movable petticoat pipe in the problem of the fixed petticoat pipe of pulling in-process fragile inlayer. In addition, when the smoke blocking cover body is arranged at the lower limit station, a clearance channel is arranged between the front end of the smoke blocking cover body and the converter shell, a clearance opening is formed in the front side of the clearance channel, and a sufficient gap is formed between the smoke blocking cover body and the outer surface of the converter shell through the clearance opening and the clearance channel so as to prevent the smoke blocking cover body from colliding with a metal bonding object protruding out of the converter shell at a converter mouth when the converter is shaken. Meanwhile, the wind shielding assembly is arranged for closing or opening a gap arranged between the smoke shielding hood body and the converter shell. When the blowing is normal, the wind shielding assembly seals the clearance opening to reduce the external air from entering the inner layer fixed smoke hood; when the furnace is shaken, the wind shielding assembly is opened, so that the clearance opening at the front end of the smoke shielding cover body is opened. By adopting the technical scheme of the invention, the water-cooling movable smoke hood does not need to be lifted in a sliding manner and covers the feeding hole when the converter is shaken, and the water-cooling movable smoke hood can safely and effectively block the smoke containing high-temperature splashed substances sprayed by the converter and make the smoke return to a process system for preparing acid. The method can increase the yield of acid, reduce the production pressure and cost of the environment-friendly treatment system, and more importantly, prevent a large amount of flue gas containing high-concentration SO2 from being injected into the outer-layer smoke hood to cause the problem that the suddenly increased flue gas is difficult to be collected and exhausted to the environment-friendly treatment system by the outer-layer smoke hood to cause the flue gas to escape and pollute the environment.

Drawings

FIG. 1 is a schematic view of a prior art horizontal side-blown converter in one operating state;

FIG. 2 is a schematic view of a horizontal side-blown converter in another operating state according to the prior art;

FIG. 3 is a schematic view of a horizontal side-blown converter according to the prior art in another operating state;

FIG. 4 is a schematic structural view of the hood body of the water-cooled movable hood of the present invention during operation;

FIG. 5 is a front elevational view of a preferred embodiment of the front mounted water cooled movable hood of the present invention;

FIG. 6 is a structural side view of a forward located preferred embodiment of the water cooled movable hood of the present invention;

FIG. 7 is a front elevational view of the construction of the preferred embodiment of the hood body of the front/rear side-mounted water-cooled movable hood of the present invention;

FIG. 8 is a structural side view of a preferred embodiment of the hood body of the front/rear mounted water cooled movable hood of the present invention;

FIG. 9 is a front view of the water-cooled moving hood front side arrangement of the present invention;

FIG. 10 is a structural side view of the water-cooled movable hood of the present invention with the front side disposed closed inner fixed hood;

FIG. 11 is a structural side view of the front side arrangement structure of the water-cooled movable smoke hood of the present invention opening a damper door at the position of the closed inner fixed smoke hood for carrying out the furnace swinging operation;

FIG. 12 is a structural side view of the water-cooled movable hood of the present invention with the front side disposed structure opening the inner fixed hood;

FIG. 13 is a front elevational view of the preferred embodiment of the water cooled moving hood aft mount construction of the present invention;

FIG. 14 is a side view of a water cooled moving hood rear mount configuration of the present invention;

FIG. 15 is a front elevational view of a water cooled moving smoke cage rear mount configuration of the present invention;

FIG. 16 is a structural side view of the water-cooled movable hood rear-mounted structure of the invention in a closed inner fixed hood;

FIG. 17 is a structural side view of the water-cooled movable smoke hood rear-mounted structure of the invention opening a damper door at the position of the closed inner fixed smoke hood for carrying out furnace swinging operation;

fig. 18 is a structural side view of the water-cooled movable smoke hood post-positioned structure of the invention in the process of opening the inner fixed smoke hood.

The reference numbers in the figures: 1. an outer layer hood; 11. a first channel; 2. the inner layer is fixed with the smoke hood; 20. a movable smoke hood; 21. a second channel; 22. a feed inlet; 23. a gap; 3. a converter; 30. converting the air holes; 31. a furnace mouth; 32. a metal bond; 4. water-cooling the movable smoke hood; 40. a smoke-blocking hood body; 401. a fire-blocking inner plate; 402. a panel; 403. edge sealing plates; 404. a liner plate; 405. connecting the ear plates; 406. a rib plate; 408. a side sealing plate; 409. an empty-avoiding channel; 410. a clearance opening; 430. a water inlet pipe; 431. a water outlet pipe; 432. a first hose; 433. a second hose; 434. a hose guard plate; 435. a water inlet extension steel pipe; 436. a water outlet extension steel pipe; 41. a roller; 42. the driving end is connected with the lug; 44. a wind shielding assembly; 440. a wind-shield door panel; 441. a hinge member; 442. a connecting rod; 443. a cylinder; 444. a branch hose; 445. a first cover body steel pipe; 446. a second cover body steel pipe; 447. a third hose; 448. a fourth hose; 449. a third extension gas steel pipe; 4410. a fourth elongated gas steel tube; 473. a cooling water pipeline; 474. a water discharge pipeline; 475. a third external gas steel pipe; 476. a fourth outer gas steel tube; 5. a track; 6. a drive device; 7. a crane beam.

Detailed Description

The invention provides a water-cooling movable smoke hood of a horizontal side blown converter, which is further described in detail below in order to make the purpose, technical scheme and effect of the invention clearer and clearer. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Fig. 1, fig. 2 and fig. 3 show a common configuration of a conventional movable hood for a converter, wherein fig. 1 is a sectional view of a converter device during normal blowing, an up-down direction in fig. 1 is an up-down direction in the description of the structure, a left-right direction in fig. 1 is a front-back direction in the description of the structure, and a direction of a line of sight toward and away from the sectional view in fig. 1 is a left-right direction in the description of the structure.

As shown in fig. 3, the converter device includes a converter 3 located below, a converter tuyere 30 and a converter mouth 31 are arranged on the converter 3, an outer layer smoke hood 1 and an inner layer fixed smoke hood 2 located above the converter 3 are arranged, the outer layer smoke hood 1 is located in front, the inner layer fixed smoke hood 2 is located behind, the outer layer smoke hood 1 is provided with a first channel 11, the inner layer fixed smoke hood 2 is provided with a second channel 21, a feed inlet 22 is arranged on the inner layer fixed smoke hood 2, and the feed inlet 22 is communicated with the first channel 11 and is used for adding or taking out smelting materials and the like towards the converter 3. The inner fixed hood 2 is provided with a movable hood 20, as shown in fig. 2, the movable hood 20 is used for sliding opening or closing a feed port 22 on the inner fixed hood 2. The converter 3 is convenient to rotate to the front side for discharging operation by opening the feed inlet 22; as shown in fig. 3, in the conventional movable hood 20, it is necessary to lift the movable hood upward so that a gap 23 of no less than about 300mm is formed between the front end thereof and the converter 3 at the time of rocking the converter, and the gap 23 is a gap from the furnace mouth 31 to often protrude the metal adhesive 32 on the outer shell of the converter 3; during normal converting, activity petticoat pipe 20 is at the limit station down, through sealing feed inlet 22, blocks the flue gas in the second passageway 21 of the fixed petticoat pipe of inlayer, prevents the flue gas to get into the first passageway 11 of outer petticoat pipe 1 simultaneously, at this moment, the second passageway 21 of the fixed petticoat pipe 2 of inlayer with communicate between the fire door 31 of converter 3 to accept the interior exhaust flue gas of stove and send into follow-up equipment and carry out heat transfer, dust removal, system acid.

Refer to fig. 4-6. Based on the technical problem that the existing converter is easy to cause environmental pollution during the converter rocking operation, the water-cooling movable smoke hood 4 is provided in the embodiment and applied to the horizontal side-blown converter. On the basis of the prior art, as compared with the prior art in fig. 2 and the improved structure in fig. 6, the movable hood 20 is transformed into the water-cooling movable hood 4, and the driving device 6, the guide rail 5 and the arrangement directions of the water-cooling movable hood 4 and the existing outer hood 1, the inner fixed hood 2 and the converter 3 of the water-cooling movable hood 4 are also the same as those of the existing movable hood, and are not described in detail. The water-cooling movable smoke hood 4 rolls on the guide rail 5 by the attachment of four rollers 41 on two sides during operation; the drive-end engaging lug 42 serves as a coupling for the drive 6; the driving system 6 drives the water-cooling movable smoke hood to move up and down. In this embodiment, the water-cooled movable hood 4 is used for slidably opening or closing the feed opening 22 of the inner-layer fixed hood 2 of the horizontal side-blown converter 3, and the water-cooled movable hood 4 further includes: a smoke shield body 40, a cooling chamber (not shown), and a wind shield assembly 44. The left and right sides of the smoke blocking cover body 40 are rotatably provided with rollers 41. The roller 41 enables the smoke barrier 40 to slide along the guide rail. The cooling chamber is provided in the hood body 40, and as shown in fig. 9, the cooling chamber is communicated with a first hose 432 for flowing cooling water in and a second hose 433 for flowing cooling water out, thereby forming a cooling passage. As shown in fig. 4, a clearance passage 409 is disposed on one side of the smoke blocking cover body 40 facing the feeding hole 22, a clearance opening 410 is disposed on a lower side surface of the clearance passage 409, and as shown in fig. 5 and 6, when the feeding hole 22 is closed, the clearance passage 409 surrounds the outside of the feeding hole 22. The wind shielding assembly 44 is disposed at the clearance opening 410 of the hood body 40, and is used to open or close the clearance opening 410.

In the above scheme, the rollers 41 are disposed on the left and right sides of the smoke blocking cover 40, so that the smoke blocking cover 40 can move and the feed opening 22 can be opened or closed. Set up cooling chamber and configuration hose in keeping off the chimney body 40, can be in the cooling water of external world is introduced, is drawn forth its cooling chamber during water-cooling activity petticoat pipe 4 static state and sliding state, forms forced circulation water-cooling, and from the fire door 31 during the messenger shakes the quick cold crisp of high temperature splash thing towards fire door 31 one side drops on keeping off the chimney body 40, and is difficult for forming big caking influence the operation of water-cooling activity petticoat pipe 4 is used, at the rocking furnace in-process like this, the operation workman can transfer and cover feed inlet 22 with keeping off the chimney body 40, needn't worry to keep off the chimney body 40 and easily adhere great splash thing caking, leads to movable petticoat pipe 20 in the problem of the fixed petticoat pipe 2 of fragile inlayer of pulling in-process. In addition, when the smoke blocking cover body 40 is at the lower limit station, a clearance passage 409 is arranged between the front end of the smoke blocking cover body 40 and the shell of the converter 3, a clearance opening 410 is formed at the front side of the clearance passage 409, and a sufficient gap is formed between the smoke blocking cover body 40 and the outer surface of the shell of the converter 3 through the clearance opening 410 and the clearance passage 409 so as to prevent the smoke blocking cover body 40 from colliding with the metal bonding object 32 protruding out of the shell of the converter 3 at the furnace mouth 31 when the converter is shaken. At the same time, the wind shielding assembly 44 is provided to close or open the gap provided between the hood body 40 and the outer shell of the converter 3. In normal blowing, the wind shielding assembly 44 closes the clearance opening 410 to reduce the external air from entering the inner fixed hood 2; when the oven is shaken, the damper door is opened, so that the clearance opening 410 at the front end of the smoke shield body 40 is opened. By adopting the technical scheme of the invention, the water-cooling movable smoke hood 4 does not need to be lifted in a sliding way when the converter is shaken and covers the feeding hole 22, and the water-cooling movable smoke hood 4 can safely and effectively block the smoke containing high-temperature splashed substances sprayed by the converter 3 and make the smoke return to a process system for preparing acid. The method can increase the yield of acid, reduce the production pressure and cost of the environment-friendly treatment system, and more importantly, prevent a large amount of flue gas containing high-concentration SO2 from being injected into the outer-layer smoke hood 1 to cause the problem that the suddenly increased flue gas is difficult to be collected and exhausted to the environment-friendly treatment system by the outer-layer smoke hood 1 to cause the flue gas to escape and pollute the environment.

As shown in fig. 7 and 8, the smoke barrier 40 includes a fire barrier lining 401 disposed toward the converter 3, a sealing plate 403 fixedly disposed on a side surface of the fire barrier lining 401, and a panel 402 connected to the sealing plate 403, wherein the fire barrier lining 401, the panel 402, and the sealing plate 403 enclose the cooling chamber, and the cooling chamber is a watertight sealed chamber. As shown in fig. 7 and 8, a lining plate 404 is fixed on one side of the fire blocking inner plate 401 facing the converter 3, a connecting lug plate 405 is further welded on the lining plate 404, a rib plate 406 is welded among the fire blocking inner plate 401, the lining plate 404 and the connecting lug plate 405, a pull rod is connected between the fire blocking inner plate 401 and the panel 402 to reinforce the cooling chamber of the smoke blocking hood body 40, and the side sealing plate 408 is arranged around the edge of the fire blocking inner plate 401 and encloses the void-avoiding passage. Specifically, two side sealing plates 408 are disposed on two sides of the cooling chamber of the smoke barrier body and welded to the inner fire barrier plate 401.

As shown in fig. 4, 6, and 8, the lower surface of the fire blocking inner plate 401 is bent towards the lower end at the end far away from the clearance opening 410 to form an arc-shaped surface, and the arc-shaped surface is connected with the side sealing plates at two sides and closes the end of the clearance passage away from the clearance opening 410; and the gap distance between the lower surface of the fire-blocking inner plate at the clearance opening and the outer surface of the converter shell is 300 +/-20 mm. In the concrete structure, the smoke blocking cover body 40 by cooling chamber and side seal board 408 constitute one and just look like the back-off is in the cover body of the dustpan shape of feed inlet 22 department, the back plate 401 that keeps off the fire of cooling chamber is in the whole cambered surface of S-shaped bending machine is adopted to water-cooling activity petticoat pipe 4 glide direction, consequently, the cooling chamber forms straightness difference A towards the face of keeping off the fire of converter in the smoke blocking cover body 40 (the lower surface of the back plate that keeps off the fire to the clearance distance between the converter stove outer surface), realizes with this the smoke blocking cover body 40 front end arrives the clearance between the converter stove outer surface is 300 ± 20 mm. Thus preventing the fume-blocking hood body from colliding with the metal adhesive on the converter shell protruding from the converter mouth during the converter shaking.

As shown in fig. 5 and 6, the wind shielding assembly 44 includes a driving member (not shown), and a wind shielding plate 440. The driving part includes: a cylinder 443, a hinge member 441, the cylinder 443 being disposed on the hood body 40. The hinge member 441 is hinged to the smoke barrier body 40, and one end of the hinge member is connected to the piston shaft of the cylinder 443, and the wind-blocking door panel 440 is connected to the other end of the hinge member 441. The wind-shield door panel 440 is turned over by the hinge member 441 and opens or closes the clearance opening 410.

In addition, the driving part further includes a connecting rod 442, one end of the connecting rod 442 is connected to the piston shaft of the cylinder 443, and the other end is hinged to the hinge member 441. Through the connection of the connecting rod 442, the stroke of the cylinder 443 is effectively enhanced, and the structural arrangement is convenient. In order to enable the two sides of the wind shield to be stressed uniformly, two driving parts are arranged, and the two driving parts are positioned on the smoke shield body 40 and are respectively connected with the left end and the right end of the wind shield door plate 440. This enables the damper plate 440 to stably open or close the clearance opening 410 by driving the driving members at both sides simultaneously. The connecting rod 442 extends the distance between the door panel and the cylinder 443 to reduce the scorching damage of the cylinder 443 caused by the heat of the melt during the processes of furnace shaking and charging/discharging.

The damper door 440 of the wind shielding assembly 44 is disposed at the front end of the hood body 40, and closes or opens the clearance opening 410 provided between the hood body 40 and the outer shell of the converter 3 in a pneumatic manner. During normal converting, the wind-guard plate 440 closes the clearance opening 410 to reduce the external air from entering the inner-layer fixed smoke hood 2; when the furnace is shaken or the water-cooling movable smoke hood 4 is slid, the wind-blocking door panel 440 is in an open state to prevent the metal adhesive 32 protruding out of the shell of the converter 3 at the furnace mouth 31 from colliding with the smoke-blocking hood body.

After the wind shielding assembly 44 opens the clearance opening 410, the wind shielding door 440 stays at the panel side of the cooling chamber of the smoke shielding body, i.e. at the upper side of the cooling chamber, so as to reduce the broiling damage of the melt heat to the wind shielding door 440 in the processes of furnace shaking and feeding and discharging.

Two driving parts are provided so that hinge parts 441 supporting the damper door panel 440 and connected to the connection rods 442 are provided at both sides of the cooling chamber and welded to the edge sealing plate of the cooling chamber to avoid a heat source at a fire hole area. Connecting rods 442 for connecting the hinge elements 441 and the cylinders are symmetrically arranged on both outer sides of the edge strip of the cooling chamber. The cylinders 443 are symmetrically arranged on the panel of the cooling chamber and on two outer sides of the edge sealing plate, one on each side, and the two cylinders are connected in parallel with the air inlet pipe and the air outlet pipe.

And a first cover steel pipe 445 and a second cover steel pipe 446 are arranged on two sides of the cooling chamber and the panel. The first cover steel pipe 445 and the second cover steel pipe 446 are both fixedly disposed on the smoke blocking cover 40. One end of the first cover steel pipe 445 and one end of the second cover steel pipe 446 are respectively used for being communicated with an external electromagnetic valve. One end of the first cover steel pipe 445 and one end of the second cover steel pipe 446 are respectively connected to the air pipe joint of the air cylinder 443 through the branch hose 444, one of the first cover steel pipe 445 and the second cover steel pipe 446 is used for supplying air to the air cylinder 443, and the other is used for discharging air from the air cylinder 443, so that a pneumatic circuit is formed. And the first cover steel pipe 445 and the second cover steel pipe 446 are fixed on the fume blocking cover 40, so that the branch hose 444 is not torn when the water-cooled movable fume cover 4 moves, and the gas path pipe is protected.

In the scheme, the water-cooling movable smoke hood 4 is divided into a front side type and a rear side type according to different arrangement of the tubing (air pipe and water pipe). The specific embodiment is as follows:

example one

The water-cooling movable smoke hood 4 in this embodiment is of a front side type structure. The method comprises the following specific steps:

as shown in fig. 5, 6, and 9, the water-cooled movable hood 4 further includes: the smoke barrier 40 is provided with a water inlet pipe 430, a water outlet pipe 431 and a hose guard 434. The water inlet pipe mouth of the water inlet pipe 430 and the water outlet pipe mouth of the water outlet pipe 431 are both provided with pipe mouth flanges, and the two pipe mouth flanges are respectively arranged at the left side and the right side of the cooling cavity and are respectively used for communicating a first hose 432 for flowing cooling water and a second hose 433 for flowing cooling water. In this embodiment, the water inlet pipe 430 and the water outlet pipe 431 are both made of steel pipes. The water inlet pipe 430 and the water outlet pipe 431 are respectively welded and fixed on the edge sealing plates 403 on the left and right sides of the smoke barrier body 40. The water inlet pipe 430 extends from the outside of the hood shield to the lower portion inside the cooling chamber, i.e., the water outlet of the water inlet pipe 430 is located at the lower portion of the cooling chamber. The water outlet pipe 431 extends from the upper portion inside the cooling chamber to the outside of the smoke barrier 40, i.e., the water inlet of the water outlet pipe 431 is located at the upper portion of the cooling chamber. Make like this outlet pipe 431 and inlet tube 430 are located open end in the cooling chamber is located respectively the upper and lower both sides of cooling chamber, consider that in this embodiment the setting that keeps off the fume hood body 40 is the slope is in on the fixed petticoat pipe 2 of the inlayer of converter 3, set up outlet pipe 431 and inlet tube 430 like this and make the rivers direction for from upwards down to the cooling water that lets in can keep off in the cooling chamber of fume hood body 40 with adhere and carry out abundant heat exchange with the high temperature splash thing on the back board of keeping off a fire. The hose guards 434 are fixedly connected to the left and right sides of the smoke barrier 40, the hose guards 434 prevent the first hose 432 and the second hose 433 connected to the smoke barrier 40 from being excessively bent, and the design parameters of the hose guards 434 are determined by the dynamic bending radius Rd of the metal hose.

As shown in fig. 5, 9, and 10, a cooling water pipe 473 and a drain pipe 474 are provided outside the water-cooled movable hood 4. The connection end of the cooling water pipe 473 to the first hose 432 (as at C in fig. 10), and the connection end of the drain pipe 474 to the second hose 433 (as at D in fig. 9) are located at a front position outside the outer hood. Thus, most of the tubular bodies of the first and

second hoses

432, 433 are disposed within the outer shroud 1 with the connection ends extending outside the outer shroud. The first hose 432 and the second hose 433 move within the working stroke range of the smoke shield body 40 along with the flange connection of the pipe openings of the water inlet pipe and the water outlet pipe of the smoke shield body 40, and the first hose 432 and the second hose 433 form S-shaped bending movement on the vertical section. The water inlet process comprises the following steps: the external cooling water enters the first hose 432 through the cooling water pipe 473, the cooling water in the first hose 432 flows into the water inlet pipe 430, and the cooling water enters the lower portion of the cooling chamber of the hood body 40 through the water inlet pipe 430. The drainage process is as follows: the cooling water in the cooling chamber of the smoke blocking cover 40 enters the water outlet pipe 431 from the upper part of the chamber, enters the second hose 433 from the water outlet pipe 431 of the smoke blocking cover 40, and enters the drainage pipeline 474 from the second hose 433 to be discharged.

In some embodiments, the fixed ends C, D of the first and second water inlet and

outlet hoses

432, 433 are disposed outside the outer hood 1 for hose replacement; the points C and D are symmetrically arranged by taking the furnace mouth as the center, and the distance L between the points C and D is more than or equal to 5000mm, so that the crane is ensured to have sufficient operating space at the front side of the outer layer smoke hood 1.

As shown in fig. 9, 10, 11, and 12, in the air passage structure of the cylinder of the wind shielding assembly, the branch hoses 444, the first cover steel pipe 445, and the second cover steel pipe 446 are portions positioned on the smoke shielding body. The ducting for the windshield assembly 44 also includes: and a third air hose 447 connected to the first cover steel pipe 445, the other end of the third air hose 447 being a fixed end and connected to a third outside air steel pipe 475, and the third outside air steel pipe 475 communicating with an external solenoid valve. One end of the second cover steel pipe 446 is connected to a fourth air hose 448, the other end of the fourth air hose 448 is a fixed end and is connected to a fourth outer air steel pipe 476, and the fourth outer air steel pipe 476 is communicated with an external electromagnetic valve. Thereby forming a control air path.

As shown in fig. 9, the third and

fourth hoses

447 and 448 are the total intake or total exhaust hoses of the two parallel cylinders; the third hose and the fourth hose are respectively arranged on two sides of the smoke blocking cover body close to the roller.

The gas circuit that it formed does: the (one side) cylinder 443, (one side) branch hose 444, first cover body steel pipe 445, third hose 447, third outside air steel pipe 475, outside solenoid valve; the (other side) cylinder 443, the (other side) branch hose 444, the second cover steel tube 446, the fourth hose 448, the fourth external air steel tube 476, and the external solenoid valve.

The first cover steel pipe 445, the third hose 447 and the third outside air pipe 475 are connected in parallel to the cooling chamber and the first hose for flowing cooling water. The second hose for flowing out the cooling water, which communicates the second cover steel pipe 446, the fourth hose 448, and the fourth outer steel pipe 476, is provided in parallel with the cooling chamber. The fixed connection point E of the third exterior gas tube 475 to the third hose 447 and the fixed connection point F of the fourth exterior gas tube 476 to the fourth hose 448 (e.g., E, F in fig. 9) are all located at a forward position on the exterior of the outer hood.

Example two

The water-cooling movable smoke hood 4 in this embodiment is of a rear side type structure. The concrete structure is as follows:

as shown in fig. 13 to 16, in the specific structure of the present embodiment, the whole set of the water-cooled movable hood 4 mainly includes:

the fume blocking cover body 40, the roller 41, the driving end connecting lug 42, the water inlet steel pipe 430 and the water outlet steel pipe 431 of the water-cooling movable fume hood with the rear side arranged type and the front side arranged type are the same, and the circulation and cooling modes of cooling water in the water-cooling movable fume hood with the front side arranged type and the rear side arranged type are also the same; in addition, the structure of the wind shielding assembly 44 of the rear side arrangement type is the same as that of the front side arrangement type water-cooling movable smoke hood, and the structure is referred to as the first embodiment.

The water-cooling movable smoke hood of the rear side type is different from the water-cooling movable smoke hood of the front side type: in the cooling water path, the positions of the first hose 432 and the second hose 433 are changed, and the structure of a hose guard 434 is omitted; an inlet extension steel pipe 435 and an outlet extension steel pipe 436 are added. Changing the positions of the third external air steel pipe 475 and the fourth external air steel pipe 476 in the air path; a third extension gas steel pipe 449 and a fourth extension gas steel pipe 4410 are added.

In the cooling water path, one end of the water inlet extension steel pipe 435 is fixedly connected with the pipe orifice flange of the water inlet pipe 430, and the other end is connected with the first hose 432. One end of the water outlet extension steel pipe 436 is connected with the pipe orifice flange of the water outlet pipe 431, and the other end is connected with the second hose 433.

As shown in fig. 13 to 18, in the air passage, the first cover steel pipe 445 is connected with a third extension air steel pipe 449, and the third extension air steel pipe 449 is connected with a third hose 447; the third extending gas steel pipe 449 is parallel to the water inlet extending steel pipe 435, and a sleeve pipe structure is adopted for all parallel areas passing through the outer smoke hood 1;

as shown in fig. 13 to 18, the second cover steel tube 446 is connected to a fourth extension air steel tube 4410, which is connected to a fourth hose 448; the fourth extension gas steel pipe 4410 is parallel to the water outlet extension steel pipe 436, and adopts a sleeve structure for all parallel regions passing through the outer smoke hood 1.

The gas circuit that it formed does: the (other side) cylinder 443 (the (other side) branch hose 444-the first cover steel pipe 445-the third extension air steel pipe 449-the third hose 447-the third outside air steel pipe 475-the outside solenoid valve; the (other side) cylinder 443, the (other side) branch hose 444, the second cover body steel tube 446, the fourth extension air steel tube 4410, the fourth hose 448, the fourth external air steel tube 476, and the external solenoid valve.

As shown in fig. 15, 16, 17 and 18, in the present embodiment, the connection end (e.g., C in fig. 15) of the cooling water pipe 473 and the first hose 432, the connection end (e.g., D in fig. 15) of the drainage pipe 474 and the second hose 433, the connection end (E in fig. 15) of the third outside air duct 475 and the third hose 447, and the connection end (F in fig. 15) of the fourth outside air duct 476 and the fourth hose 448 are located outside the outer hood 1 and the inner fixed hood 2 and at the rear side of the outer hood 1;

the connection end of the cooling water pipe 473 and the first hose 432, the connection end of the drain pipe 474 and the second hose 433, the connection end of the third outside air steel pipe 475 and the third hose 447, and the connection end of the fourth outside air steel pipe 476 and the fourth hose 448 are all fixedly arranged.

By additionally arranging the water inlet extension steel pipe 435 and the water outlet extension steel pipe 436, as well as the third extension gas steel pipe 449 and the fourth extension gas steel pipe 4410, and extending the water inlet extension steel pipe 435, the water outlet extension steel pipe 436, the third extension gas steel pipe 449 and the fourth extension gas steel pipe 4410 towards the moving direction of the smoke barrier body, the first hose 432, the second hose 433, the third hose 447, the fourth hose 448 and the pipeline connection of the external cooling water and the gas for the equipment in and out water cooling activity and the hood 4 are moved out of the outer layer smoke hood 1, and the first hose 432, the second hose 433, the third hose 447 and the fourth hose 448 are arranged outside the outer layer smoke hood 1 and the inner layer fixed smoke hood 2. Under the condition that the external rear side of the outer layer smoke hood 1 has enough space, the arrangement increases the safety of the stokehold feeding and discharging operation space and the equipment operation.

The water inlet extension steel pipe 435, the water outlet extension steel pipe 436, the third extension gas steel pipe 449 and the fourth extension gas steel pipe 4410 move up and down along with the smoke barrier 40 in an inclined manner within the working stroke range, and the pipe bodies of the first hose 432, the second hose 433, the third hose 447 and the fourth hose 448 on two sides of the smoke barrier 40 form a U-shaped or S-shaped bending motion on the vertical section of the motion trail.

In some embodiments, the distance H between the upper limit position of the moving end of the first hose 432 and the second hose 433 (the connecting end of the first hose and the water inlet extension steel pipe, and the connecting end of the second hose and the water outlet extension steel pipe) and the bottom of the crane beam 7 is more than or equal to 500mm, which is also the rear side setting type implementation condition of the water-cooling movable smoke hood.

In summary, according to the water-cooled movable hood of the horizontal side-blown converter of the embodiment, by arranging the cooling chamber in the water-cooled movable hood and configuring the hose, external cooling water can be introduced into/drawn out of the cooling chamber of the water-cooled movable hood in a static state and a sliding state, and by forced circulation water cooling, high-temperature splashed objects sprayed from a furnace mouth onto the cooling chamber during furnace swinging are rapidly cooled and embrittled to fall off, so that large agglomerates are not easily formed to influence the operation and use of the water-cooled movable hood. In addition, when the water-cooling movable smoke hood is at the lower limit station, a sufficient gap is arranged between the front end of the smoke blocking hood body and the converter shell so as to prevent the smoke blocking hood body from colliding with a metal adhesive on the converter shell protruding from a converter mouth during the furnace shaking; meanwhile, the wind shielding assembly is arranged for closing or opening the clearance opening arranged between the smoke shielding hood body and the converter shell, and when in normal blowing, the wind shielding assembly closes the clearance opening to reduce the external air from entering the inner layer fixed smoke hood; when the converter is shaken, the wind shielding assembly is opened, so that a gap is formed between the front end of the smoke shielding cover body and the converter shell, and metal bonding objects are prevented from being collided.

By adopting the technical scheme of the invention, the water-cooling movable smoke hood does not need to be lifted in a sliding manner during furnace swinging, and can safely and effectively block the smoke containing high-temperature splashed objects sprayed by the converter and return the smoke to a process system for acid making. The method can increase the yield of acid, reduce the production pressure and cost of the environment-friendly treatment system, and more importantly, prevent a large amount of flue gas containing high-concentration SO2 from being injected into the outer-layer smoke hood to cause the problem that the suddenly increased flue gas is difficult to be collected and exhausted to the environment-friendly treatment system by the outer-layer smoke hood to cause the flue gas to escape and pollute the environment.

It is to be understood that the invention is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the invention as defined by the appended claims.

Claims

1. The utility model provides a water-cooling activity petticoat pipe of horizontal side blown converter for slide open or seal the feed inlet on the fixed petticoat pipe of inlayer of horizontal side blown converter, its characterized in that, water-cooling activity petticoat pipe includes:

2. The water-cooled movable hood according to claim 1, wherein the damper assembly includes a drive component, and a damper door panel;

the hinge piece is hinged to the smoke blocking cover body, one end of the hinge piece is used for being connected with a piston shaft of the air cylinder, and the wind blocking door plate is connected to the other end of the hinge piece;

3. The water-cooled moving hood as claimed in claim 2, wherein the driving part further comprises a connecting rod having one end connected to the piston shaft of the cylinder and the other end hinged to the hinge member;

4. The water-cooled movable hood of claim 2 wherein the damper door rests on an upper side of the cooling chamber after the clearance opening is opened.

5. The water-cooled movable hood according to claim 1, wherein the hood body comprises: the fire-blocking inner plate, the edge sealing plate, the face plate and the side sealing plate;

6. The water-cooled movable smoke hood according to claim 5, wherein the lower surface of the fire blocking inner panel is curved towards the lower end at the end away from the clearance opening to form an arc-shaped surface, and the arc-shaped surface is connected with the side sealing panels at two sides and closes the end of the clearance passage away from the clearance opening;

7. The water-cooled moving fumehood of claim 1 further comprising: the water inlet pipe and the water outlet pipe are respectively positioned at the left side and the right side of the cooling cavity;

8. The water-cooled movable hood according to claim 7, wherein an outer hood is disposed on a side of the feed inlet remote from the inner stationary hood;

9. The water-cooled movable hood according to claim 7, wherein an outer hood is disposed on a side of the feed inlet remote from the inner stationary hood;

10. The water-cooled moving fumehood of claim 3 further comprising: