CN114101648A - Install molten iron jar hourglass iron quick cooling leak-stopping device on transport vechicle - Google Patents
Install molten iron jar hourglass iron quick cooling leak-stopping device on transport vechicle Download PDFInfo
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- CN114101648A CN114101648A CN202111415714.5A CN202111415714A CN114101648A CN 114101648 A CN114101648 A CN 114101648A CN 202111415714 A CN202111415714 A CN 202111415714A CN 114101648 A CN114101648 A CN 114101648A
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- molten iron
- water supply
- water
- transport vehicle
- stopping device
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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
- B22D41/005—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like with heating or cooling means
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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
- B22D41/12—Travelling ladles or similar containers; Cars for ladles
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
The invention discloses a molten iron tank iron leakage rapid cooling leakage-stopping device arranged on a transport vehicle, belonging to the technical field of metallurgy and fire fighting; the hot-metal ladle comprises a cylindrical hot-metal ladle body, wherein the hot-metal ladle body is arranged on a hot-metal ladle transport vehicle, and each 1/4 hot-metal ladle body is provided with a water spray nozzle at the circumference; the horizontal included angle between the water spray nozzle and the hot metal ladle body is 5-15 degrees, and the spray angle is 90-120 degrees; the installation mode of the water spray nozzle can promote the hot metal ladle body and the hot metal to be rapidly cooled, and the leakage prevention of the hot metal ladle body and the hot metal is realized.
Description
Technical Field
The invention belongs to the technical field of metallurgy and fire fighting, and particularly relates to a molten iron tank iron leakage rapid cooling and leakage stopping device arranged on a transport vehicle.
Background
Molten iron required for steel-making production needs to be transported from an iron-making blast furnace to a steel-making blast furnace by using a molten iron tank. The temperature of the molten iron after being discharged from the furnace is about 1500 ℃, the quality of a working layer is unstable due to the limitation of the building of the molten iron tank by materials, processes and other conditions, the quality of the knotting process of a permanent layer is difficult to control, and when a gap occurs between the working layer and the permanent layer, the accidents of iron seepage and iron leakage of the molten iron tank are easily caused.
In the prior art, the depth of molten iron in a tank is more than 3000mm, and because of factors such as internal pressure intensity and gravity of the molten iron, the iron infiltration and iron leakage of a molten iron tank generally occur at the lower half part of the tank body; the molten iron can burn through the girder, the guard plate, the hydraulic pressure and other vehicle body equipment of the transport vehicle after leakage, the distance of a molten iron transport line is far while the vehicle is paralyzed, no metallurgical hoisting equipment is arranged on the transport line, and timely ladle-down can not be realized. At present, when a vehicle-mounted hot metal ladle seeps iron and leaks iron, a fire-fighting lance is mainly used for spraying water for a long distance to cool. The main disadvantages are that: firstly, the direct current water cannot effectively contact the lower part of the tank body, and is limited by the structural characteristics of the hot metal ladle and the transport vehicle, the part below the lower waist hoop of the hot metal ladle is completely surrounded by the vehicle body, and the water sprayed in the horizontal direction cannot contact the lower part of the tank body; the lower waist hoop is provided with a conical guard plate, the diameter of the lower waist hoop is 476mm larger than that of the tank body, and a skirt-shaped structure formed by the lower waist hoop prevents straight-flow water from contacting the tank body from the oblique upper part; and secondly, the hot metal ladle body is not provided with an upper cover, the pressure of the fire-fighting lance is high, the water column is difficult to control when the fire-fighting lance is sprayed in a long distance, and the water column can explode when being sprayed into the hot metal ladle body.
Disclosure of Invention
In order to solve the problems, the invention provides a molten iron tank iron leakage rapid cooling and leakage stopping device arranged on a transport vehicle, which solves the problem that the molten iron tank body, the transport vehicle body and other structural factors cannot be cooled and leakage stopped when a vehicle is used in the metallurgical industry to transport molten iron and cause iron leakage.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a molten iron tank iron leakage rapid cooling leakage stopping device arranged on a transport vehicle comprises a cylindrical molten iron tank body, wherein the molten iron tank body is arranged on the molten iron tank transport vehicle, and each 1/4 circumference of the molten iron tank body is provided with a water spray nozzle; the horizontal included angle between the water spray nozzle and the hot metal ladle body is 5-15 degrees, and the spray angle is 90-120 degrees.
In addition, the invention is further improved by three water spray nozzles in the circumferential range of each 1/4 hot metal ladle body.
The invention is further improved in that the water spray nozzle is connected with a water supply pipe; the water supply pipe is fixed on the inner guard plate of the hot metal ladle transport vehicle through a connecting piece.
In a further improvement of the invention, the water supply pipe is connected with a water supply system through an elbow.
The invention is further improved in that the water supply system comprises a fire-fighting quick joint, a water supply main pipe and a reducing joint; the fire-fighting quick connector is connected with an external fire truck; one side of the main water supply pipe is connected with the fire-fighting quick connector; the other side of the water supply main pipe is connected with the elbow through a reducing joint.
In a further development of the invention, the water spray head, the water supply pipe and the connecting piece form a water spray device; the water spraying device is arranged on an inner guard plate of the hot metal ladle transport vehicle and is positioned on a lower waist hoop of the hot metal ladle body.
The invention is further improved in that the water mist nozzle is a ZSTTC impact type medium-speed water mist nozzle, the rated working pressure is 0.35MPaMPa, and the flow coefficient is 115-200-; the water supply pressure is less than or equal to 1.2 MPa.
The invention is further improved in that the water supply pipe is made of a galvanized seamless steel pipe or a titanium pipe; the main water supply pipe is a seamless steel pipe.
According to the technical scheme, the invention has the beneficial effects that: the device structure is used for solving the problems that the water can not be sprayed to cool and stop leakage when the molten iron tank is infiltrated and leaked through the water mist spray head; the full coverage of spraying water mist around the hot-metal ladle body is realized, and meanwhile, a large amount of heat energy can be absorbed due to the large heat exchange area to rapidly vaporize, so that the hot-metal ladle body and the molten iron can be rapidly cooled. The faster the molten iron cooling speed, the faster the crystallization speed, and the worse the fluidity of the molten iron, thereby realizing self leakage prevention.
The invention has simple design structure, convenient installation and disassembly, does not need to be filled with water in a quasi-working state, can be connected with a fire fighting truck through a fire fighting quick connector in a working state, has no risk of spraying water into a molten iron tank, protects the personal safety of firemen, and has convenient operation, high working efficiency and safe and reliable use.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description will be briefly introduced, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
Fig. 1 is a schematic overall structure diagram of the embodiment.
FIG. 2 is a schematic view of an embodiment of a water atomizer mounting arrangement.
In the drawings, the components represented by the respective reference numerals are listed below: 1 is a spray head; 2 is a water supply pipe; 3 is a connecting piece; 4, bending the pipe; 5 is a fire-fighting quick connector; 6 is a main water supply pipe; 7 is a reducer union; 100 is a hot metal ladle body; 200 is a hot metal ladle carrier; 300 is an inner panel.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the present embodiment, and it is apparent that the embodiments described below are only a part of embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the scope of protection of this patent.
Referring to fig. 1-2, the invention discloses a molten iron leakage rapid cooling and stopping device for a molten iron tank mounted on a transport vehicle, which comprises a cylindrical molten iron tank body 100, wherein the molten iron tank body 100 is arranged on a molten iron tank transport vehicle 200, and each 1/4 molten iron tank body is provided with a water spray nozzle 1 at the circumference; the horizontal included angle between the water mist spray head 1 and the hot metal ladle body is 5-15 degrees, and the spray angle is 90-120 degrees. In this embodiment, there are three water mist nozzles 1 in the circumferential range of each 1/4 hot-metal ladle body 100, and twelve water mist nozzles 1 in total, so as to realize full coverage of water mist spraying around the hot-metal ladle body 100.
The water spray nozzle 1 is connected with a water supply pipe 2; the water supply pipe 2 is connected with a water supply system through an elbow 4; the water supply system comprises a fire-fighting quick joint 5, a water supply main pipe 6 and a reducing joint 7; the fire-fighting quick connector 5 is connected with an external water supply unit, and the water supply unit adopts a fire truck to supply water in the embodiment; one side of the main water supply pipe 6 is connected with the fire-fighting quick joint 5; the other side of the main water supply pipe 6 is connected with the elbow 4 through a reducing joint 7; the fire engine is used for supplying water to the water spray device, and then working pressure can be provided for the water spray nozzle 1.
In the above embodiment, in particular, the water mist head 1, the water supply pipe 2 and the connection member 3 form a water spraying device; the connecting member 3 may be a clamp, and obviously, in order to implement the installation and fixation of the water supply pipe 2, the connecting member 3 may also be in other forms for solving the installation problem of the water supply pipe 2; the water spraying device is arranged on an inner guard plate of the hot metal ladle transport vehicle and is positioned below the lower waist hoop of the ladle body of the hot metal ladle in an inclined manner; the water spraying device fixed on the inner guard plate 300 can solve the problem that the interior of the hot metal ladle body 100 can not spray water; meanwhile, the horizontal included angle and the injection angle between the water spray nozzle 1 and the hot-metal ladle body 100 can enable the injection range to be below the lower waist hoop of the hot-metal ladle body, and the water spray can be rapidly vaporized when being burnt by the hot ladle body, so that the molten iron in the hot-metal ladle body 100 cannot be damaged.
Wherein the water mist nozzle 1 is a ZSTTC impact type medium-speed water mist nozzle, the rated working pressure is 0.35MPa, and the flow coefficient is 115-200; the water supply pressure of the fire engine is less than or equal to 1.2MPa, thus being capable of completely meeting the pressure requirement of the water spray nozzle 1.
In the above, the water supply pipe 2 is made of a galvanized seamless steel pipe or a titanium pipe; the melting point of titanium is 1668 ℃ and higher than that of iron 1538 ℃, so that the titanium can be prevented from being melted by leaked iron, and the reliability of the device can be improved by adopting a titanium tube; when the water supply pipe 2 adopts a titanium pipe, 2 sections of the water supply pipe 2 on one side can be combined, so that the installation is convenient.
The connector 3 can effectively fix the water supply pipe 2 on the inner guard plate 300 of the hot metal ladle transport vehicle 200; the elbow 4 and the reducer union 7 realize the connection between the water supply pipe 2 and the water supply main pipe 6; the main water supply pipe 6 is a seamless steel pipe, so that the total flow requirement of two water supply pipes can be ensured; the fire-fighting quick connector 5 is positioned in the cab, so that the fire hose can be conveniently and quickly connected, and the personal safety of firemen is guaranteed.
The working principle of the molten iron leakage rapid cooling and stopping device for the molten iron tank is as follows: when the molten iron tank has steel seepage and steel leakage, a fireman lays a fire hose to a cab to be connected with a fixed fire-fighting quick coupling 5, a fire engine supplies water under pressure, the water mist spray head 1 obtains good water distribution and atomization requirements when the pressure reaches 0.20MPa, and when water mist drops are sprayed to the surface of a roasted hot tank body, a large amount of heat energy can be absorbed due to large heat exchange area to vaporize rapidly, so that the molten iron tank body 100 and molten iron can be enabled to be cooled rapidly. The faster the molten iron cooling rate, the faster the crystallization rate, and the poorer the fluidity, thereby achieving the self-leak-stopping purpose of the rapid molten iron tank body 100.
In the above, the pipe diameters of the water supply pipe and the water supply main pipe are calculated.
The pipe diameter of the water supply pipe 2 is calculated. According to the test result, the flow coefficient K is 115 medium-speed water mist spray head, and the rated working pressure is 0.35 MPa.
Calculating the flow of the water spray nozzle:
calculated flow of a system
The design flow rate Qs of the system is kQj-1.05 × 10.755-11.29L/s.
Referring to an automatic water spraying fire extinguishing system, the flow velocity V of a pipeline is 5 m/s;
according to Q ═ AV, we get Π r2V ═ 11.29, and r ═ 0.027m ═ 27 mm.
Therefore, the pipe diameter of the water supply pipe 2 is DN65, and obviously, in order to achieve the function and effect thereof, the pipe diameter of the water supply pipe 2 may also adopt other specifications, and in the embodiment, DN65 is preferably selected.
And secondly, calculating the pipe diameter of the water supply main pipe 6.
Calculated flow of water supply main pipe system
The design flow rate Qs of the system is kQj-1.05 x 28.05-22.59L/s
For the same reason, r is 38 mm.
Therefore, the pipe diameter of the water supply main pipe 6 is DN 80; obviously, in order to achieve the function and effect, the pipe diameter of the main water supply pipe 6 may also adopt other specifications, and DN80 is preferably selected in the embodiment.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The terms "upper", "lower", "outside", "inside" and the like in the description and claims of the present invention and the above drawings are used for distinguishing relative positions if any, and are not necessarily given qualitatively. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. The molten iron tank iron leakage rapid cooling leakage stopping device mounted on a transport vehicle is characterized by comprising a cylindrical molten iron tank body (100), wherein the molten iron tank body (100) is arranged on a molten iron tank transport vehicle (200), and each 1/4 circle of the molten iron tank body (100) is provided with a water mist spray head (1); the horizontal included angle between the water spray nozzle (1) and the hot metal ladle body is 5-15 degrees, and the spray angle is 90-120 degrees.
2. The molten iron leakage rapid cooling and stopping device installed on a transport vehicle as claimed in claim 1, wherein there are three water mist spraying heads (1) per 1/4 parts of the circumference of the molten iron ladle body (100).
3. The molten iron leakage rapid cooling and stopping device installed on the transport vehicle as claimed in claim 2, wherein the water spray nozzle (1) is connected with a water supply pipe (2); the water supply pipe (2) is fixed on an inner guard plate (300) of the hot metal ladle transport vehicle (200) through a connecting piece (3); the water supply pipe (2) is connected with a water supply system through an elbow (4).
4. The molten iron leakage rapid cooling and stopping device installed on a transport vehicle according to claim 3, wherein the water supply system comprises a fire-fighting quick coupling (5), a water supply main pipe (6) and a reducer union (7); the fire-fighting quick joint (5) is connected with an external fire-fighting truck; one side of the main water supply pipe (6) is connected with the fire-fighting quick joint (5); the other side of the water supply main pipe (6) is connected with the elbow (4) through a reducing joint (7).
5. The molten iron leakage rapid cooling and stopping device installed on a transport vehicle as claimed in claim 3, wherein the water spray nozzle (1), the water supply pipe (2) and the connector (3) form a water spray device which is installed on the inner guard plate (300) and located on the lower waist hoop of the molten iron tank body (100).
6. The molten iron leakage rapid cooling and stopping device installed on the transportation vehicle as claimed in claim 1, wherein the water mist nozzle (1) is a zstvc type impact type medium speed water mist nozzle with a rated working pressure of 0.35mpa and a flow coefficient of 115-200; the water supply pressure is less than or equal to 1.2 MPa.
7. The molten iron leakage rapid cooling and stopping device installed on the transport vehicle as claimed in claim 3, wherein the water supply pipe (2) is a galvanized seamless steel pipe or a titanium pipe.
8. The molten iron leakage rapid cooling and stopping device installed on the transport vehicle as claimed in claim 4, wherein the main water supply pipe (6) is a seamless steel pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111415714.5A CN114101648A (en) | 2021-11-25 | 2021-11-25 | Install molten iron jar hourglass iron quick cooling leak-stopping device on transport vechicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111415714.5A CN114101648A (en) | 2021-11-25 | 2021-11-25 | Install molten iron jar hourglass iron quick cooling leak-stopping device on transport vechicle |
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| CN114101648A true CN114101648A (en) | 2022-03-01 |
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| CN202111415714.5A Pending CN114101648A (en) | 2021-11-25 | 2021-11-25 | Install molten iron jar hourglass iron quick cooling leak-stopping device on transport vechicle |
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