CN111308574B - Device and method for detecting blockage of refractory material in steelmaking continuous casting process - Google Patents
Device and method for detecting blockage of refractory material in steelmaking continuous casting process Download PDFInfo
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- CN111308574B CN111308574B CN202010088227.1A CN202010088227A CN111308574B CN 111308574 B CN111308574 B CN 111308574B CN 202010088227 A CN202010088227 A CN 202010088227A CN 111308574 B CN111308574 B CN 111308574B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V9/00—Prospecting or detecting by methods not provided for in groups G01V1/00 - G01V8/00
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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
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/16—Controlling or regulating processes or operations
- B22D11/18—Controlling or regulating processes or operations for pouring
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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
- B22D2/00—Arrangement of indicating or measuring devices, e.g. for temperature or viscosity of the fused mass
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/46—Sealings with packing ring expanded or pressed into place by fluid pressure, e.g. inflatable packings
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- G—PHYSICS
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- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
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Abstract
The invention discloses a device and a method for detecting blockage of a refractory material in a steelmaking continuous casting process, which belong to the technical field of steelmaking continuous casting, wherein a containing space is arranged in a box body, and an element to be detected and detection liquid are placed in the containing space; the gas inlet of the inlet pipeline is connected with a gas source, and the other end of the inlet pipeline is connected with the element to be detected through a connecting piece; the first flow meter and the pressure meter are sequentially connected in series on the inlet pipeline; the second flow meter is arranged at the first position of the top of the box body; the sealing element is arranged at the joint of the element to be detected and the box body, so that the reasonable bubble control requirement is provided, the blockage of a water gap of the continuous casting crystallizer is effectively reduced, the element to be detected and the box body can be replaced in time after being blocked, and the technical effect of influencing the quality of a casting blank is prevented.
Description
Technical Field
The invention relates to the technical field of steelmaking continuous casting, in particular to a device and a method for detecting blockage of refractory material in a steelmaking continuous casting process.
Background
In the field of steelmaking continuous casting, a tundish water inlet, a stopper rod and a crystallizer submerged nozzle are adopted to finish the continuous casting of molten steel in the molten steel casting process, and impurities exist in the molten steel, are easily adhered to the surfaces of the tundish water inlet, the stopper rod and the crystallizer submerged nozzle lining in the molten steel casting process, so that blockage is caused, and the quality of a casting blank and the stability and smooth running of casting are seriously influenced. In order to solve the problem of blockage, a tundish water feeding port, a stopper rod and a crystallizer submerged nozzle with air permeability are developed, argon gas is blown from a refractory intermediate layer, fine argon bubbles are generated on the surface of the refractory contacting molten steel, and impurities in the molten steel are prevented from contacting the surface of the refractory, so that blockage is prevented.
However, the refractory materials are mainly formed by mechanical extrusion, the sizes of air holes on the surface layers of the refractory materials are different, and meanwhile, the gas channels in the refractory materials cannot be guaranteed to be consistent, so that the flow-pressure curves of each refractory material element are different, and each refractory material cannot be blown according to uniform argon blowing parameters. Meanwhile, because the cleanliness of the cast molten steel is different, even if the breathable refractory material is adopted, inclusions in the molten steel can still be adhered to the surface of the refractory material along with the increase of casting time in the casting process, so that blockage is caused. But the existence of high-temperature molten steel in the casting process can not know the blockage and the blockage degree.
Disclosure of Invention
The invention provides a device and a method for detecting refractory blockage in a steelmaking continuous casting process, which are used for solving the technical problems that blockage is easily caused in the casting process in the prior art, but the blockage and the blockage degree cannot be known in the casting process due to the existence of high-temperature molten steel, thereby achieving the technical effects of providing reasonable bubble control requirements, effectively reducing the blockage of a continuous casting crystallizer water gap, replacing the blockage in time and preventing the influence on the casting blank quality.
In a first aspect, the present invention provides a device for detecting blockage of refractory material during steel-making continuous casting, comprising: the detection device comprises a box body, a detection device and a detection device, wherein an accommodating space is formed in the box body, and elements to be detected and detection liquid are placed in the accommodating space; the gas inlet of the inlet pipeline is connected with a gas source, and the other end of the inlet pipeline is connected with the element to be detected through a connecting piece; the first flow meter and the pressure meter are sequentially connected in series on the inlet pipeline; the second flow meter is arranged at the first position of the top of the box body; and the sealing element is arranged at the joint of the element to be detected and the box body.
Preferably, a glass window is arranged on one side surface of the box body.
Preferably, the method further comprises the following steps: the support frame, the support frame sets up the bottom of box.
Preferably, a water inlet is formed in a second position of the top of the box body, a water outlet is formed in the bottom of the box body, and the second position is different from the first position.
Preferably, the connecting member is a flange.
Preferably, the seal is a sealed balloon.
In a second aspect, the invention provides a method for detecting blockage of refractory material in a steelmaking continuous casting process, which comprises the following steps: placing an element to be detected in a box body; adding detection liquid into the water inlet, and controlling the adding amount of the detection liquid; sealing the element to be detected and the box body by using a sealing piece; after an inlet pipeline is connected with the element to be detected, the flow of the entering gas is adjusted according to a first flow meter, the indication number of the pressure meter is recorded, and a flow-pressure curve of the element to be detected is obtained; in the process of adjusting the flow of gas, obtaining the size and dispersion degree of blown bubbles, controlling the diameters of the bubbles within a first preset range, and recording the gas flow corresponding to the bubbles with the diameters within the first preset range; controlling the actual gas flow of the element to be detected according to the gas flow corresponding to the bubble with the diameter within a first preset range; and judging whether the element to be detected is blocked or not according to the flow-pressure curve.
Preferably, the method further comprises the following steps: and if the blockage occurs, determining the degree of the blockage, and judging whether to replace the ventilating water gap of the crystallizer.
Preferably, the size and dispersion degree of the blown bubbles are obtained by using a high-speed camera.
Preferably, the gas is an inert gas.
One or more technical solutions in the embodiments of the present invention at least have one or more of the following technical effects:
according to the device and the method for detecting the blockage of the refractory material in the steelmaking continuous casting process, provided by the embodiment of the invention, the box body, the inlet pipeline, the first flowmeter, the pressure gauge, the second flowmeter and the sealing element are used, wherein the box body is internally provided with an accommodating space, and the accommodating space is used for accommodating an element to be detected and detection liquid; the gas inlet of the inlet pipeline is connected with a gas source, and the other end of the inlet pipeline is connected with the element to be detected through a connecting piece; the first flow meter and the pressure meter are sequentially connected in series on the inlet pipeline; the second flow meter is arranged at the first position of the top of the box body; the sealing element is arranged at the joint of the element to be detected and the box body, and the element to be detected is arranged in the box body when in use; adding detection liquid into the water inlet, and controlling the adding amount of the detection liquid; sealing the element to be detected and the box body by using a sealing piece; after an inlet pipeline is connected with the element to be detected, the flow of the entering gas is adjusted according to a first flow meter, the indication number of the pressure meter is recorded, and a flow-pressure curve of the element to be detected is obtained; in the process of adjusting the flow of gas, obtaining the size and dispersion degree of blown bubbles, controlling the diameters of the bubbles within a first preset range, and recording the gas flow corresponding to the bubbles with the diameters within the first preset range; controlling the actual gas flow of the element to be detected according to the gas flow corresponding to the bubble with the diameter within a first preset range; whether the element to be detected is blocked or not is judged according to the flow-pressure curve, so that the technical problem that the blocking is easily caused in the casting process in the prior art, but the blocking and the blocking degree cannot be known due to the existence of high-temperature molten steel in the casting process is solved, the reasonable bubble control requirement is provided, the blocking of a continuous casting crystallizer water gap is effectively reduced, the continuous casting crystallizer water gap can be replaced timely after the blocking, and the technical effect of influencing the casting blank quality is prevented.
The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.
Drawings
FIG. 1 is a schematic structural diagram of a device for detecting blockage of refractory material during a steelmaking continuous casting process according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart of a method for detecting refractory clogging in a steelmaking continuous casting process according to an embodiment of the present invention;
FIG. 3 is a schematic flow-pressure curve of a simulation test element in an embodiment of the present invention.
Description of reference numerals: the device comprises a first flowmeter 1, a pressure gauge 2, a second flowmeter 3, a connecting piece 4, a sealing piece 5, an element to be detected 6, a box body 7, a glass window 8, a water inlet hole 9, a water discharging hole 10 and a support frame 11.
Detailed Description
The embodiment of the invention provides a device and a method for detecting blockage of refractory material in a steelmaking continuous casting process, which are used for solving the technical problems that in the prior art, blockage is easy to cause in the casting process, but in the casting process, the blockage and the blockage degree cannot be known due to the existence of high-temperature molten steel.
The technical scheme in the embodiment of the invention has the following general idea:
according to the device and the method for detecting the blockage of the refractory material in the steelmaking continuous casting process, provided by the embodiment of the invention, through the box body, an accommodating space is formed in the box body, and an element to be detected and detection liquid are placed in the accommodating space; the gas inlet of the inlet pipeline is connected with a gas source, and the other end of the inlet pipeline is connected with the element to be detected through a connecting piece; the first flow meter and the pressure meter are sequentially connected in series on the inlet pipeline; the second flow meter is arranged at the first position of the top of the box body; the sealing element is arranged at the joint of the element to be detected and the box body, so that the reasonable bubble control requirement is provided, the blockage of a water gap of the continuous casting crystallizer is effectively reduced, the element to be detected and the box body can be replaced in time after being blocked, and the technical effect of influencing the quality of a casting blank is prevented.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. 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 protection scope of the present invention.
Example one
Fig. 1 is a schematic structural diagram of a device for detecting blockage of refractory material in a steelmaking continuous casting process according to an embodiment of the present invention, as shown in fig. 1, the device includes:
the detection device comprises a box body 7, wherein an accommodating space is formed inside the box body 7, and the accommodating space is used for accommodating the element to be detected 6 and detection liquid.
Specifically, the casing 7 is a main external structure of the device, the shape of which can be selected according to actual needs, and in this embodiment, the shape of the casing 7 is preferably a hollow rectangular parallelepiped structure, and the casing 7 is a stainless steel sealed box. Therefore, the box 7 has a certain accommodating space therein, and the element 6 to be detected and the detection liquid can be accommodated in the accommodating space. The element 6 to be detected in this embodiment includes a tundish upper nozzle, a stopper rod, and a crystallizer air-permeable submerged nozzle.
The detection device for the blockage of the refractory material in the steelmaking continuous casting process further comprises: and a gas inlet of the inlet pipeline is connected with a gas source, and the other end of the inlet pipeline is connected with the element to be detected 6 through a connecting piece 4.
Further, the connecting member 4 is a flange.
Specifically, the inlet pipeline is a pipeline for conveying gas in the device, one end of the inlet pipeline is communicated with a gas source port of the gas, and the other end of the inlet pipeline is connected with the element to be detected 6 through the connecting piece 4. Further, the detection gas in this embodiment is an inert gas, and in actual use, the type of the inert gas used may be selected as needed, and in this embodiment, the inert gas is preferably argon.
The detection device for the blockage of the refractory material in the steelmaking continuous casting process further comprises: the first flow meter 1 and the pressure meter 2 are sequentially connected in series on the inlet pipeline.
Specifically, first flow meter 1 and manometer 2 all install on the inlet pipeline, promptly, first flow meter 1 and manometer 2 concatenate in proper order on the inlet pipeline, and first flow meter 1 is the entry gas flow meter of installing on the inlet pipeline, and manometer 2 is the entry gas pressure meter of installing on the inlet pipeline, consequently, can monitor and control the flow and the pressure of measuring gas through first flow meter 1 and manometer 2.
The detection device for the blockage of the refractory material in the steelmaking continuous casting process further comprises: and the second flow meter 3 is arranged at a first position on the top of the box body 7.
Specifically, the second flow meter 3 is installed at a top position of the tank 7, specifically, the second flow meter 3 is installed at an end position of the top of the tank 7, and the flow rate of the outlet gas can be monitored by the second flow meter 3.
The detection device for the blockage of the refractory material in the steelmaking continuous casting process further comprises: and the sealing piece 5 is arranged at the joint of the element to be detected 6 and the box body 7.
Further, the sealing member 5 is a sealing air bag.
Specifically, the sealing member 5 is a member for connecting the element 6 to be detected and the case 7 in the device, and the element to be detected and the sealed case can be sealed after the sealing member 5 is inflated in actual use. In the present embodiment, the sealing member 5 is preferably used as a sealing bladder, and may be specifically adjusted according to actual needs.
Furthermore, a glass window 8 is arranged on one side surface of the box body 7.
Further, a water inlet 9 is formed in a second position of the top of the box body 7, and a water outlet 10 is formed in the bottom of the box body 7, wherein the second position is different from the first position.
Specifically, one side of the box body 7 is provided with a glass window 8, wherein the glass window 8 is an organic glass observation hole, namely the element 6 to be detected inside the box body 7 can be observed and recorded through the glass window 8. Furthermore, a water inlet 9 is arranged at the top of the box body 7, and the water inlet 9 is an adding hole for detecting liquid, namely an adding hole for simulating liquid. A drain hole 10 is formed at the bottom of the case 7, and the drain hole 10 is a drain hole for detecting liquid, that is, a drain hole for simulating body fluid. Meanwhile, the opening position of the water inlet hole 9 is different from the installation position of the second flowmeter 3.
Further, the method also comprises the following steps: and the support frame 11 is arranged at the bottom of the box body 7.
Specifically, the support frame 11 is a support of the detection device for providing support for the detection device, and therefore, the support frame 11 is installed at the bottom of the box 7.
Example two
Fig. 2 is a schematic structural diagram of a method for detecting blockage of refractory material in a steelmaking continuous casting process in an embodiment of the invention, as shown in fig. 2, the method includes:
step 1: the component 6 to be tested is placed in the box 7.
Specifically, before the tundish is used, the element 6 to be detected, namely a water feeding port, a stopper rod and a crystallizer ventilation type water feeding port of the continuous casting three-piece tundish, need to be lifted and placed into the box body 7, and a ventilation part needs to be placed into a sealing space of the box body 7, so as to ensure that the ventilation part is placed into the sealing box.
Step 2: and adding detection liquid from the water inlet hole 9, and controlling the adding amount of the detection liquid.
Specifically, then, a detection liquid is added into the tank body 7 from the water inlet 9, wherein the detection liquid is a simulated liquid with kinematic viscosity similar to that of molten steel at 1600 ℃, and the kinematic viscosity of the molten steel at 1600 ℃ is 0.9mm 2 S, kinematic viscosity of water at 20 ℃ of 1.0mm 2 Therefore, in the embodiment, the detection liquid is preferably water, that is, water is used to simulate high-temperature molten steel, and the motion behavior of bubbles is observed. And the amount of water added needs to be controlled to ensure that the breathable part is submerged.
And step 3: the element 6 to be tested and the box 7 are sealed by means of a seal 5.
Specifically, when the addition of the simulation liquid is completed, the seal member 5 is further inflated, so that the element 6 to be detected and the case 7 can be sealed.
And 4, step 4: after the inlet pipeline is connected with the element 6 to be detected, the flow of the entering gas is adjusted according to the first flow meter 1, the indication number of the pressure meter 2 is recorded, and a flow-pressure curve of the element 6 to be detected is obtained.
Further, the gas is an inert gas.
Specifically, the detection gas in this embodiment is an inert gas, and in actual use, the type of the inert gas used may be selected as needed, and in this embodiment, the inert gas is preferably argon. Thus, after the argon blowing inlet pipeline is connected with the element 6 to be detected, the first flow meter 1 is adjusted according to certain requirements, for example, the adjustment is carried out within the range of 1-15 NL/min, the indication number of the pressure gauge 2 is recorded when the flow is adjusted by 0.5NL/min, and a flow-pressure curve of the element 6 to be detected is drawn.
And 5: in the process of adjusting the flow of the gas, the size and dispersion degree of the blown gas bubbles are obtained, the diameters of the bubbles are controlled within a first preset range, and the gas flow corresponding to the bubbles with the diameters within the first preset range is recorded.
Further, the size and dispersion degree of the blown bubbles are obtained by adopting a high-speed camera.
Specifically, in the process of adjusting different flow rates, a high-speed camera is adopted to observe the size and dispersion degree of blown bubbles, the smaller the argon blowing flow rate is, the smaller the bubble diameter is, and the molten steel casting process is favorable for preventing nodulation and blockage. Therefore, under the condition of ensuring that the bubbles are blown out from the entire air-permeable position of the element 6 to be detected, the diameter of the blown bubbles should be controlled within a first preset range, which is preferably 1.0 to 5.0mm in the embodiment, and the argon blowing flow rate within the range of the bubble diameter is recorded.
Step 6: and controlling the actual gas flow of the element to be detected according to the gas flow corresponding to the bubble with the diameter within a first preset range.
Specifically, after the above-mentioned inspection is completed, the element 6 to be inspected can be mounted and used. And (3) during the use process, controlling the argon blowing flow of the element to be detected 6 during the actual use process according to the argon flow when the bubble diameter determined in the step (5) is 1.0-5.0 mm.
And 7: and judging whether the element to be detected is blocked or not according to the flow-pressure curve.
And further, if the blockage occurs, determining the degree of the blockage, and judging whether to replace the ventilating water gap of the crystallizer.
Specifically, whether a tundish upper nozzle, a stopper rod and a crystallizer ventilation type nozzle are blocked or not is predicted according to a flow-pressure curve drawn in the test process, the more serious the blockage is under the same flow, the larger the pressure value of an argon blowing inlet is, the degree of the blockage is determined, and whether the crystallizer ventilation type nozzle is replaced or not is judged.
Furthermore, the argon blowing amount of the water feeding port of each tundish, the stopper rod and the air-permeable water immersion port of the crystallizer are fixed values in the using process.
Therefore, in the method for detecting the blockage of the refractory material in the steelmaking continuous casting process in the embodiment, the argon blowing parameter for blowing out the optimal bubbles is determined through simulation analysis of the air permeability of each refractory material, the flow-pressure curve of the refractory material element is drawn at the same time, and whether the blockage occurs and the degree of the blockage are detected through the changes of the flow and pressure parameters in the actual casting process. The argon blowing flow is accurately controlled according to the air permeability characteristic of each element in the casting process, meanwhile, the blockage and the blockage degree are judged by drawing a flow-pressure curve in advance, and a replaceable crystallizer submerged nozzle which is seriously blocked is replaced in the casting process, so that the influence on the quality of a casting blank is reduced.
Furthermore, the test casting steel type is ultra-low carbon IF steel, the steel type is used for automobile panels, the requirement on the flow field control of the crystallizer in the casting process is high, and the water gap of the crystallizer is not allowed to be blocked in the casting process, so that the quality of a casting blank is not influenced. The casting section is 230mm multiplied by (900-1600) mm, and 9 furnaces are cast together. Before casting, three continuous casting refractory materials, a tundish upper nozzle, a stopper rod and a crystallizer submerged nozzle are respectively detected.
Firstly, analyzing the size of bubbles through a high-speed camera in the detection process, and when the diameter of the bubbles is controlled to be 1.0-5.0 mm, the argon blowing flow of a tundish water inlet is 2.5-5.0 NL/min, the argon blowing flow of a stopper rod is 3.0-7.5 NL/min, and the argon blowing flow of a crystallizer submerged water inlet is 2.5-6.0 NL/min. Meanwhile, a flow-pressure curve was plotted for each refractory element, as shown in fig. 3.
In the actual casting process on site, the flow rate of argon blowing at the water feeding port of the tundish is 3.0NL/min, the flow rate of argon blowing at the stopper rod is 5.5NL/min, the flow rate of argon blowing at the submerged nozzle of the crystallizer is 3.0NL/min, the stopper rod and the water feeding port of the tundish are not blocked in the casting process, but the pressure of the submerged nozzle of the crystallizer starts to obviously rise in the 4 th furnace during casting, the pressure of the submerged nozzle of the crystallizer rises to 0.34Mpa by 0.18Mpa after the 4 th furnace is cast, the submerged nozzle of the crystallizer is replaced after the 4 th furnace is finished, the thickness of nodules on the inner wall of the water gap exceeds 12mm after the water gap is replaced, the stability of casting and the liquid level of the crystallizer is seriously influenced, the water gap is replaced by detecting the blockage, and the influence of the blockage on the quality of a casting blank is reduced.
Therefore, before casting blank casting, detect on specific detection device and go up mouth of a river, stopper stick, crystallizer immersion nozzle refractory material gas permeability to the centre package in this embodiment, guarantee that refractory material can blow out the bubble in the use, detect bubble size and dispersion degree simultaneously, the influence of quantitative research bubble parameter to preventing the nodulation effect draws the pressure-flow curve of refractory material simultaneously. Through studying the influence of the size and dispersion degree of bubbles of the water feeding port, the stopper rod and the submerged nozzle of the crystallizer on the anti-blocking effect of the continuous casting tundish, the reasonable bubble control requirement is provided, and the blocking of the water feeding port of the continuous casting crystallizer is effectively reduced. Meanwhile, the refractory before use is detected, a pressure-flow curve of the refractory in the casting process is simulated and drawn, whether the refractory is blocked in the casting process is judged according to the pressure-flow curve, and the refractory is replaced in time after being blocked, so that the influence on the quality of a casting blank is prevented.
One or more technical solutions in the embodiments of the present invention at least have one or more of the following technical effects:
according to the device and the method for detecting the blockage of the refractory material in the steelmaking continuous casting process, provided by the embodiment of the invention, the box body, the inlet pipeline, the first flowmeter, the pressure gauge, the second flowmeter and the sealing element are used, wherein the box body is internally provided with an accommodating space, and the accommodating space is used for accommodating an element to be detected and detection liquid; a gas inlet of the inlet pipeline is connected with a gas source, and the other end of the inlet pipeline is connected with the element to be detected through a connecting piece; the first flow meter and the pressure meter are sequentially connected in series on the inlet pipeline; the second flow meter is arranged at the first position of the top of the box body; the sealing element is arranged at the joint of the element to be detected and the box body, and the element to be detected is arranged in the box body when in use; adding detection liquid into the water inlet, and controlling the adding amount of the detection liquid; sealing the element to be detected and the box body by using a sealing piece; after an inlet pipeline is connected with the element to be detected, the flow of the entering gas is adjusted according to a first flow meter, the indication number of the pressure meter is recorded, and a flow-pressure curve of the element to be detected is obtained; in the process of adjusting the flow of gas, obtaining the size and dispersion degree of blown bubbles, controlling the diameters of the bubbles within a first preset range, and recording the gas flow corresponding to the bubbles with the diameters within the first preset range; controlling the actual gas flow of the element to be detected according to the gas flow corresponding to the bubble with the diameter within a first preset range; whether the element to be detected is blocked or not is judged according to the flow-pressure curve, so that the technical problem that the blocking is easily caused in the casting process in the prior art, but the blocking and the blocking degree cannot be known due to the existence of high-temperature molten steel in the casting process is solved, the reasonable bubble control requirement is provided, the blocking of a continuous casting crystallizer water gap is effectively reduced, the continuous casting crystallizer water gap can be replaced timely after the blocking, and the technical effect of influencing the casting blank quality is prevented.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various modifications and variations can be made in the embodiments of the present invention without departing from the spirit or scope of the embodiments of the invention. Thus, if such modifications and variations of the embodiments of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to encompass such modifications and variations.
Claims (9)
1. The utility model provides a detection device that resistant material blockked up among steelmaking continuous casting process which characterized in that includes:
the detection device comprises a box body, a detection device and a detection device, wherein an accommodating space is formed in the box body, and elements to be detected and detection liquid are placed in the accommodating space;
the gas inlet of the inlet pipeline is connected with a gas source, and the other end of the inlet pipeline is connected with the element to be detected through a connecting piece;
the first flow meter and the pressure meter are sequentially connected in series on the inlet pipeline;
the second flow meter is arranged at the first position of the top of the box body;
the sealing element is arranged at the joint of the element to be detected and the box body;
a glass window is formed in one side face of the box body, and elements to be detected in the box body are observed and recorded through the glass window.
2. The apparatus for detecting clogging of a refractory in a steelmaking continuous casting process as set forth in claim 1, further comprising:
the support frame, the support frame sets up the bottom of box.
3. The apparatus as claimed in claim 1, wherein a water inlet is provided at a second position on the top of the box body, and a water outlet is provided at the bottom of the box body, wherein the second position is different from the first position.
4. The apparatus for detecting clogging of a refractory during steelmaking continuous casting as set forth in claim 1, wherein said connecting member is a flange.
5. The apparatus for detecting clogging of a refractory in a steelmaking continuous casting process as set forth in claim 1, wherein said sealing member is a sealing bladder.
6. A method for detecting blockage of refractory materials in a steelmaking continuous casting process is characterized by comprising the following steps:
placing an element to be detected in a box body;
adding detection liquid into the water inlet, and controlling the adding amount of the detection liquid;
sealing the element to be detected and the box body by using a sealing piece;
after an inlet pipeline is connected with the element to be detected, the flow of the entering gas is adjusted according to a first flow meter, the indication number of the pressure meter is recorded, and a flow-pressure curve of the element to be detected is obtained;
in the process of adjusting the flow of gas, obtaining the size and dispersion degree of blown bubbles, controlling the diameters of the bubbles within a first preset range, and recording the gas flow corresponding to the bubbles with the diameters within the first preset range;
controlling the actual gas flow of the element to be detected according to the gas flow corresponding to the bubble with the diameter within a first preset range;
and judging whether the element to be detected is blocked or not according to the flow-pressure curve.
7. The method for detecting the blockage of the refractory material in the steelmaking continuous casting process as claimed in claim 6, wherein the step of judging whether the element to be detected is blocked or not according to the flow-pressure curve further comprises the following steps:
and if the blockage occurs, determining the degree of the blockage, and judging whether to replace the ventilating water gap of the crystallizer.
8. The method for detecting the blockage of the refractory in the steelmaking continuous casting process as claimed in claim 6, wherein the size and dispersion degree of the blowing bubbles are obtained by using a high-speed camera.
9. The method of claim 6, wherein the gas is an inert gas.
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| CN112077279A (en) * | 2020-09-14 | 2020-12-15 | 含山县承力铸造厂 | Improved generation foundry furnace |
| CN112157240B (en) * | 2020-09-30 | 2022-03-22 | 首钢集团有限公司 | Method for detecting blockage of submerged nozzle of crystallizer |
| CN114061648A (en) * | 2021-09-29 | 2022-02-18 | 君原电子科技(海宁)有限公司 | Device and method for detecting blockage of fine hole of electrostatic chuck |
| CN114346229B (en) * | 2022-01-12 | 2024-03-15 | 中钢集团洛阳耐火材料研究院有限公司 | Method for testing submerged nozzle nodulation |
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