CN107052322B - Molten steel tank sliding gate protector and protection method - Google Patents
Molten steel tank sliding gate protector and protection method Download PDFInfo
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- CN107052322B CN107052322B CN201710293815.7A CN201710293815A CN107052322B CN 107052322 B CN107052322 B CN 107052322B CN 201710293815 A CN201710293815 A CN 201710293815A CN 107052322 B CN107052322 B CN 107052322B
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- molten steel
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- shaped rib
- matter removing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/14—Closures
- B22D41/22—Closures sliding-gate type, i.e. having a fixed plate and a movable plate in sliding contact with each other for selective registry of their openings
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Prevention Of Electric Corrosion (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Abstract
A protector for a sliding water gap of a molten steel tank and a protection method are disclosed, wherein the protector comprises a base, a polygonal special-shaped rib plate and a foreign matter removing guard plate, the polygonal special-shaped rib plate is hinged with a connecting plate of the base, the foreign matter removing guard plate is installed at the bottom of the polygonal special-shaped rib plate, and the base is fixed at the bottom of an end beam of a molten steel ferry vehicle body. The invention thoroughly solves the occurrence factors of serious and extra-large accidents of pouring more than one ton of molten steel caused by scraping and damaging of the sliding water gap of the lower molten steel tank of the converter due to hard objects and failure of the sliding water gap on the running channel of the molten steel ferry vehicle, fundamentally avoids the occurrence of similar accidents, and has the advantages of safety, reliability and convenient manufacture and replacement. The protector for the sliding water gap of the molten steel tank moves forwards to remove all foreign matters, returns without any foreign matters, eliminates the threat of the foreign matters on the damage of the molten steel tank water gap during the forward movement and the return, is convenient to use, has high comprehensive benefit, low cost and quick response, and fundamentally avoids the occurrence of serious and extra-serious accidents.
Description
Technical Field
The invention relates to the field of metallurgical steelmaking, in particular to a molten steel tank sliding nozzle protector and a protection method.
Background
In a metallurgical steelmaking system, a molten steel tank ferry vehicle bears a molten steel heavy tank transportation link under a furnace. In daily operation, molten steel smelted by the converter flows into a molten steel tank through a furnace body steel outlet, the molten steel tank is seated on a molten steel transfer trolley, and the molten steel tank carrying the molten steel is transported to the next operation link through the molten steel transfer trolley. The bottom of the molten steel tank body is attached with a sliding water gap which belongs to a composite piece and protrudes out of the bottom of the molten steel tank body, and the opening and closing of the sliding water gap are controlled by an external hydraulic transmission device. When molten steel is loaded in the molten steel tank, the sliding water gap is always in a closed state, and the state is finished under the condition that the sliding water gap is in a complete closed state. Sometimes, in the process of adding the steel scrap in front of the converter, some short waste materials such as channel steel, I-steel and the like fall to the lower part of the converter from the edge of the steel scrap groove and fall on an up-and-down running channel of a molten steel tank car to form hard objects protruding out of the ground. When the molten steel tank ferry vehicle bears an intact molten steel tank to run, the intact sliding water port at the lower part of the tank body is very easy to be scraped by fallen hard ground objects, so that the upper sliding plate and the lower sliding plate which are components of the sliding water port are in a damaged state of being scraped, dislocated and offset, operators do not know the condition in an operation room, the molten steel tank bearing the damaged sliding water port is opened below a furnace to wait for tapping, once hundreds of tons of smelted molten steel are poured into the molten steel tank, the molten steel flowing in a short time is sprayed out through the damaged sliding water port, so that production and safety accidents which cannot be changed are caused, and the accidents are very serious. More than one hundred tons of molten steel in the whole furnace leaks through the damaged sliding water gap of the molten steel tank body, the molten steel in the whole furnace is poured out, no measures are taken to stop the molten steel from leaking, meanwhile, the body and the auxiliary equipment of the molten steel tank ferry car are burnt, peripheral tracks, slab bridges, frame columns and the like are burnt, if the molten steel is accumulated in a peripheral slag collection pit and is blown out, the consequence is more serious, the production stop processing time is very long, and safety damage such as severe environment, burning and scalding accompanying of operators is attached, and the comprehensive loss cannot be estimated. The molten steel tank is a container for bearing molten steel, the tank body and protection are safe, the sliding water gap of the tank body is safe if no external scraping is caused, similar accidents occur because the sliding water gap is scraped and touched by hard objects on a running road to cause damage, a deviation gap is generated between the sliding water gaps, operating personnel cannot find the sliding water gap in time, and major accidents in the smelting industry are caused. The above causes are the difficult problems of potential safety hazards which restrict the safety production to a great extent.
Disclosure of Invention
The invention aims to provide a molten steel tank sliding nozzle protector and a protection method, which completely solve the problem that the sliding nozzle fails due to the damage caused by the scraping of hard objects on a molten steel ferry vehicle running channel of a molten steel tank sliding nozzle under a converter furnace in the metallurgical field, so that the occurrence of serious and extra-large accidents of pouring over one hundred tons of molten steel is avoided fundamentally, and the molten steel tank sliding nozzle protector is safe, reliable and convenient to manufacture and replace.
In order to achieve the purpose, the invention adopts the following technical scheme:
a molten steel tank sliding gate protector comprises a base, a polygonal special-shaped rib plate and a foreign matter removing guard plate, wherein the polygonal special-shaped rib plate is hinged with a connecting plate of the base, the foreign matter removing guard plate is installed at the bottom of the polygonal special-shaped rib plate, and the base is fixed at the bottom of an end beam of a molten steel ferry vehicle body.
The base comprises a top plate, connecting plates and a vertical face baffle, the vertical face baffle is fixed on the side faces of the two connecting plates, and the top plate is fixed at the upper ends of the connecting plates and the vertical face baffle.
One side of the polygonal special-shaped rib plate connected with the foreign matter removing guard plate is linear, and the other side of the polygonal special-shaped rib plate is arc-shaped; the upper end of the linear side is hinged with the base, the upper end of the arc side is provided with a rib plate protruding upwards, and the gravity center of the polygonal special-shaped rib plate is below the hinged point and is deviated to the arc side.
The foreign matter removing guard plate is connected with the polygonal rib plate through angle steel, one side face of the angle steel is connected with the foreign matter removing guard plate through bolts, and the other side face of the angle steel is connected with the polygonal special rib plate through bolts.
A method for protecting a molten steel ladle sliding nozzle by adopting a molten steel ladle sliding nozzle protector comprises the following specific steps:
1) Firstly, the molten steel ferry vehicle is hoisted to an overhaul area, two bases are fixed on the lower portion of an end beam on the front side of the molten steel ferry vehicle through positioning bolts and are fixed in an enhanced mode through spot welding, and vertical face baffles of the bases are installed inwards.
2) And the polygonal special-shaped rib plates are sequentially hinged on the connecting plate of the base through connecting pin shafts, and the foreign matter removing guard plate is arranged at the bottoms of the two polygonal special-shaped rib plates.
3) When the molten steel ferry vehicle moves forwards, the foreign matter removing protective plate is shielded in front of a sliding water gap of the molten steel tank, the rib plate protruding from the upper end of the polygonal special-shaped rib plate is clamped on the vertical baffle of the base, and the barrier in the forward movement is removed along with the forward pushing of the molten steel ferry vehicle, so that the sliding water gap of the molten steel tank is prevented from being damaged by the hanging of the foreign matters;
4) When the molten steel ferry vehicle returns, the force-bearing direction of the foreign matter removing protective plate is opposite, and the foreign matter removing protective plate can rotate and lift around the hinge pin shaft when meeting the resistance of the foreign matter, so that the foreign matter can not be brought back.
Compared with the prior art, the invention has the beneficial effects that:
a protector for the sliding water gap of molten steel tank is composed of a protecting cover, a protecting cover and a protecting cover.
The set of molten steel tank sliding gate protector moves forward to clear away all foreign matters, returns without any foreign matters, moves forward and returns to eliminate the damage threat of the foreign matters to the molten steel tank gate, is convenient to use, has high comprehensive benefit, low cost and quick effect, is operated by production personnel only by a pipe, does not need to worry about the scraping and touching safety of the sliding gate, and is additionally provided with a safe and effective protective measure in front of the molten steel tank sliding gate.
Drawings
FIG. 1 is a schematic view showing a structure of a sliding gate protector for a ladle according to the present invention.
Fig. 2 is a top view of fig. 1.
Fig. 3 is a side view of fig. 1.
In the figure: 1-base, 101-top plate, 102-vertical baffle, 103-connecting plate, 2-hinge pin, 3-polygonal special rib plate, 301-protruded rib plate, 4-bolt, 5-angle steel and 6-foreign matter removing guard plate.
Detailed Description
The following further describes embodiments of the present invention with reference to the accompanying drawings:
referring to the figures 1-3, the molten steel tank sliding nozzle protector comprises a base 1, a polygonal special-shaped rib plate 3 and a foreign matter removing guard plate 6, wherein the polygonal special-shaped rib plate 3 is hinged to a connecting plate 103 of the base 1, the foreign matter removing guard plate 6 is installed at the bottom of the polygonal special-shaped rib plate 3, and the base 1 is fixed at the bottom of an end beam of a molten steel ferry vehicle body.
The base 1 comprises a top plate 101, connecting plates 103 and a vertical face baffle plate 102, wherein the vertical face baffle plate 102 is fixed on the side faces of the two connecting plates 103, and the top plate 101 is fixed at the upper ends of the connecting plates 103 and the vertical face baffle plate 102.
One side of the polygonal special-shaped rib plate 3 connected with the foreign matter removing guard plate 6 is linear, and the other side of the polygonal special-shaped rib plate 3 is arc-shaped; the upper end of the linear side is hinged with the base 1, the upper end of the arc side is provided with a rib plate 301 protruding upwards, and the gravity center of the polygonal special-shaped rib plate is below the hinged point and deviates to the arc side.
The foreign matter removing guard plate 6 is connected with the polygonal rib plate 3 through angle steel 5, one side surface of the angle steel 5 is connected with the foreign matter removing guard plate 6 through a bolt 4, and the other side surface of the angle steel is connected with the polygonal rib plate 3 through a bolt 4.
A method for using a molten steel tank sliding nozzle protector comprises the following specific steps:
1) Firstly, the molten steel ferry vehicle is hoisted to an overhaul area, two bases 1 are fixed to the lower portion of an end beam on the front side of the molten steel ferry vehicle through positioning bolts and are fixed in a reinforced mode through spot welding, and vertical face baffles 102 of the bases 1 are installed inwards.
2) The polygonal special-shaped rib plates 3 are sequentially hinged on the connecting plates 103 of the base 1 through hinge pins 2, and the foreign matter removing guard plates 3 are arranged at the bottoms of the two polygonal special-shaped rib plates 3.
3) When the molten steel ferry vehicle moves forwards, the foreign matter removing guard plate 6 shields the front of a sliding water gap of the molten steel tank, the rib plate 301 protruding from the upper end of the polygonal special-shaped rib plate 3 is clamped on the vertical baffle plate 102 of the base 1, and as the molten steel ferry vehicle moves forwards, obstacles in the forward movement are removed, so that the sliding water gap of the molten steel tank is prevented from being damaged by foreign matter hanging;
4) When the molten steel ferry vehicle returns, the force direction of the foreign matter removing guard plate 6 is opposite, and when the foreign matter removing guard plate meets the resistance of the foreign matter, the foreign matter removing guard plate can rotate and lift around the hinge pin shaft 2 without bringing back the foreign matter.
According to the molten steel tank sliding gate protector, the opposite sides of the hinge points of the polygonal special-shaped rib plates 3 on the molten steel tank sliding gate protector are provided with the rib plates 301 protruding upwards, when a molten steel ferry vehicle moves forwards, the protruding rib plates 301 are propped against the vertical baffle plates 102 of the base 1, so that the whole polygonal special-shaped rib plates 3 drive the foreign matter removing guard plates 6 to always keep vertically pushing forwards, and all foreign matters on a forward moving channel are removed. When the steel ladle returns, the multi-edge special-shaped rib plates 3 can rotate around the hinge pin shaft 2 with the foreign matter removing protective plates 6 under the action of self gravity to lift up automatically, thereby effectively ensuring that the whole set of steel ladle sliding nozzle protector can not bring any foreign matter back when the heavy-duty ferry vehicle returns, eliminating the re-damage caused by the fact that the brought-back foreign matter scrapes and bumps the steel ladle sliding nozzle, simultaneously, the connection of the multi-edge special-shaped rib plates 3 and the foreign matter removing protective plates 6 does not adopt a universal welding mode, but adopts a novel connection mode which is flexible in disassembly, convenient to replace and capable of resisting the deformation of the plate surface, namely after the multi-edge special-shaped rib plates 3 and the foreign matter removing protective plates 6 are positioned, each installation angle steel such as angle 10# in multilateral abnormal shape gusset 3 both sides, through 3 sets of M24 x 30mm bolted connection angle steel of unilateral, the gusset, it is fixed with removing foreign matter backplate 3 to be connected with 3 sets of M24 x 30mm bolts for another angle steel of unilateral, 3 both sides of multilateral abnormal shape gusset are 12 sets of bolted connection location altogether, because of remove on the 6 faces of foreign matter backplate, in, all have bolt location down, can effective control remove the distortion of 6 faces of foreign matter backplate, be less than multilateral abnormal shape gusset 30 millimeters when removing the installation of foreign matter backplate 6 simultaneously, guarantee that multilateral abnormal shape gusset 3 does not wear and the intact of anchor point.
The other special design of the invention is that the back of the polygonal special-shaped rib plate 3 is designed into an arc shape, when the molten steel ferry vehicle is off-line and overhauled together with the protector, the protector is firstly contacted with the ground and is easily damaged by the self weight of the vehicle body, so the arc shape on the back of the polygonal special-shaped rib plate 3 can rotate and lift around the articulated shaft when contacting the ground, and the deformation and the damage of the polygonal special-shaped rib plate 3 and the foreign matter removing guard plate 6 caused by the vehicle body pressing guard plate are avoided.
Claims (4)
1. A molten steel tank sliding gate protector is characterized by comprising a base, a polygonal special-shaped rib plate and a foreign matter removing guard plate, wherein the polygonal special-shaped rib plate is hinged with a connecting plate of the base;
one side of the polygonal special-shaped rib plate connected with the foreign matter removing guard plate is linear, and the other side of the polygonal special-shaped rib plate is arc-shaped; the upper end of the linear side is hinged with the base, the upper end of the arc side is provided with a rib plate protruding upwards, and the gravity center of the polygonal special-shaped rib plate is below the hinged point and deviates to the arc side.
2. The molten steel ladle sliding gate protector according to claim 1, wherein the base comprises a top plate, connecting plates, and vertical baffles, the vertical baffles are fixed on the side surfaces of the two connecting plates, and the top plate is fixed on the upper ends of the connecting plates and the vertical baffles.
3. The protector for the sliding nozzle of the molten steel ladle according to claim 1, wherein the foreign matter removing guard plate is connected with the polygonal special-shaped rib plate through angle steel, one side surface of the angle steel is connected with the foreign matter removing guard plate through a bolt, and the other side surface of the angle steel is connected with the polygonal special-shaped rib plate through a bolt.
4. A method for protecting a molten steel ladle sliding gate using the molten steel ladle sliding gate protector according to claim 1, comprising the steps of:
1) Firstly, hoisting a molten steel ferry vehicle to an overhaul area, fixing two bases at the lower part of an end beam at the front side of the molten steel ferry vehicle through positioning bolts, strengthening the fixation through spot welding, and installing a vertical baffle of the base inwards;
2) The polygonal special-shaped rib plates are sequentially hinged to a connecting plate of the base through connecting pin shafts, and the foreign matter removing guard plate is arranged at the bottoms of the two polygonal special-shaped rib plates;
3) When the molten steel ferry vehicle moves forwards, the foreign matter removing protection plate shields the front of a sliding water gap of the molten steel tank, the rib plate protruding from the upper end of the polygonal special-shaped rib plate is clamped on the vertical baffle of the base, and the barrier in the forward movement is removed along with the forward pushing of the molten steel ferry vehicle, so that the sliding water gap of the molten steel tank is prevented from being hung and damaged by foreign matters;
4) When the molten steel ferry vehicle returns, the force-bearing direction of the foreign matter removing protective plate is opposite, and the foreign matter removing protective plate can rotate and lift around the hinge pin shaft when meeting the resistance of the foreign matter, so that the foreign matter can not be brought back.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710293815.7A CN107052322B (en) | 2017-04-28 | 2017-04-28 | Molten steel tank sliding gate protector and protection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710293815.7A CN107052322B (en) | 2017-04-28 | 2017-04-28 | Molten steel tank sliding gate protector and protection method |
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| Publication Number | Publication Date |
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| CN107052322A CN107052322A (en) | 2017-08-18 |
| CN107052322B true CN107052322B (en) | 2022-12-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710293815.7A Active CN107052322B (en) | 2017-04-28 | 2017-04-28 | Molten steel tank sliding gate protector and protection method |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115647347B (en) * | 2022-12-28 | 2023-03-03 | 河北泰禾高温流体科技股份有限公司 | High-safety anti-collision sliding gate mechanism |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB189911781A (en) * | 1899-06-06 | 1899-12-09 | Wilhelm Mattes | Improved Fender or Obstruction Remover for Attachment to Tramcars. |
| KR20040028189A (en) * | 2002-09-30 | 2004-04-03 | 주식회사 포스코 | Corn for protecting submerged entry nozzle of continuous casting process |
| CN202447657U (en) * | 2011-12-20 | 2012-09-26 | 鞍钢股份有限公司 | Steel ladle sliding gate mechanism protection plate |
| CN205032726U (en) * | 2015-09-15 | 2016-02-17 | 新疆八一钢铁股份有限公司 | Ladle nozzle protection device |
| CN205892182U (en) * | 2016-08-08 | 2017-01-18 | 四川德胜集团钒钛有限公司 | Can clear up stocker of track barrier by oneself |
| CN207043334U (en) * | 2017-04-28 | 2018-02-27 | 中国三冶集团有限公司 | A kind of steel water tank sliding gate protector |
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| CN107052322A (en) | 2017-08-18 |
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