CN114354971B - Continuous casting crystallizer molten steel flow velocity measurement equipment - Google Patents
Continuous casting crystallizer molten steel flow velocity measurement equipment Download PDFInfo
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- CN114354971B CN114354971B CN202210043827.5A CN202210043827A CN114354971B CN 114354971 B CN114354971 B CN 114354971B CN 202210043827 A CN202210043827 A CN 202210043827A CN 114354971 B CN114354971 B CN 114354971B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
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Abstract
The invention aims to provide a continuous casting crystallizer molten steel flow rate measuring device which comprises a fixing device, wherein the fixing device comprises a mounting plate, a mounting rod, a sliding block and a sliding rod, so that the sliding block can slide on the sliding rod or be fixed, and the downward length of the mounting rod is further adjusted, thereby adjusting the height of a speed measuring device extending into molten steel, and facilitating multipoint measurement of the molten steel so as to adapt to different measuring conditions; the speed measuring device comprises a fixed rod, a cover body, a rotating wheel, an outer tube, an inner tube, an encoder, a wire and a display screen, and can record the rotating speed of the rotating wheel driven to rotate by molten steel through the encoder to calculate the flow rate of the molten steel; the rectifying device comprises a guide plate and a rectifying plate, can ensure that the flow direction of molten steel is consistent with the rotation direction of the rotating wheel for measurement, rectifies vortex flow at the rear of the flow measuring equipment, reduces the influence on measured flow velocity data of the molten steel, and ensures the measuring accuracy.
Description
Technical Field
The invention relates to the field of mechanical accessories, in particular to equipment for measuring the flow rate of molten steel in a continuous casting crystallizer.
Background
In the continuous casting process, the flow behavior of molten steel in a crystallizer is directly related to the growth of a solidified shell, the surface quality of a casting blank and the formation of internal defects. The flow rate measuring method of the molten steel in the crystallizer has important influence on the quality of the continuous casting billet, the measuring rod is stretched into the molten steel, the measuring rod is deflected by the thrust generated by the measuring rod when the molten steel flows, so that the flow rate of the molten steel is calculated, but when the measuring rod stretches into the molten steel, the measuring rod can disturb the flow direction of the molten steel, swirling flow is easily formed behind the measuring rod, so that the flow rate behind the measuring rod is slower than other directions, partial thrust of the molten steel in front of the measuring rod is counteracted, the measured flow rate is smaller, the traditional flow rate measuring equipment needs the fluid movement direction to be consistent with the rotation direction of the measuring rod, but the flow direction of the molten steel in the crystallizer cannot be accurately observed by naked eyes, the flow direction of the molten steel in the crystallizer is not completely unified, and is influenced by various factors, so that the flow direction of the molten steel has a certain included angle with the rotation direction of the measuring rod, the thrust of the measuring rod is smaller, and the measured flow rate is smaller.
The device and the method for continuously measuring the flow velocity near the surface of the molten steel, which are proposed by the specification CN201210487402.X, comprise a tachometer rod and a tachometer rod deflection device. One end of the speed measuring rod is a refractory material pipe, the other end of the speed measuring rod is a stainless steel rod, and the refractory material pipe is in tight fit connection with the stainless steel rod in size. The speed measuring rod adopts a single compound refractory material or a refractory material compounded by the compounds. The length of the speed measuring rod is 10-100 cm, and the diameter of the speed measuring rod is 5-50 mm. The speed measuring rod deflection device comprises a speed measuring rod fixing screw, and the speed measuring rod is arranged on the speed measuring rod deflection device through the speed measuring rod fixing screw. According to the method, the distance between the rotating pivot and the gravity center and the distance between the rotating pivot and the impact force acting point are calculated according to the gravity center, the rotating pivot and the impact force acting point of the speed measuring rod, the gravity value of the speed measuring rod is measured, the fire-resistant speed measuring rod is inserted into molten steel, the rotating angle and the insertion depth are obtained, and therefore the continuous change of the flow velocity of the molten steel is calculated.
The invention can adjust the angle of the flow velocity measuring equipment according to the flowing direction of the molten steel, and more accurately measure the flow velocity of the molten steel.
Disclosure of Invention
In order to solve the above problems, an object of the present invention is to provide a continuous casting crystallizer molten steel flow rate measuring apparatus, which can adjust an angle of the flow rate measuring apparatus according to a flow direction of molten steel, so as to more accurately measure a flow rate of molten steel.
The invention provides a continuous casting crystallizer molten steel flow velocity measuring device, which is characterized in that: the fixing device comprises a mounting plate, a mounting rod, a sliding block and a sliding rod, wherein the mounting plate is fixed on the crystallizer through a first screw, the sliding rod is fixed on the mounting plate, the sliding block is slidably mounted on the sliding rod, second screws are arranged on two sides of the sliding block, and the mounting rod is fixed below the sliding block;
the speed measuring device comprises a fixed rod, a cover body, a rotating wheel, an outer tube, an inner tube, an encoder, a wire and a display screen, wherein the fixed rod is rotatably arranged below the mounting rod;
the rectifying device comprises a guide plate and rectifying plates, wherein the guide plate is fixed in front of the cover body, and the rectifying plates are fixed on two sides of the rear of the cover body.
Further, the mounting plate is provided with an arc-shaped limit groove corresponding to the outer tube.
Furthermore, the front opening of the cover body is large, and the rear opening is small.
Further, a plurality of hemispherical shells are uniformly distributed around the rotating wheel.
Further, the cover body is provided with a groove corresponding to the rotating wheel, and a through hole is arranged at the rear of the groove.
Further, a vacuum cavity is arranged between the outer tube and the inner tube.
Further, the lead is arranged in the inner tube through the support frame and is positioned in the center of the inner tube.
Further, the cross section of the guide plate is in a water drop shape with a thick front side and a thin rear side.
Further, the outer sides of the rectifying plates on the two sides are planes, and the inner sides are curved surfaces with thick front parts and thin rear parts.
Further, the speed measuring device and the rectifying device are of an appearance symmetrical structure, and one side of the outer tube is provided with a balancing weight.
The beneficial effects are that:
1. the mounting panel is fixed in on the crystallizer through first screw, and the slide bar is fixed in on the mounting panel, and the slider slidingtype is installed on the slide bar, and both sides are equipped with the second screw, and the installation pole is fixed in the slider below, can adjust the elasticity of second screw, makes the slider slide or fix on the slide bar, and then adjusts the decurrent length of installation pole to adjust speed sensor and stretch into the height of molten steel, be convenient for carry out the multipoint measurement to the molten steel, with the measuring condition of adaptation difference.
2. The dead lever rotation type is installed in the installation pole below, and the cover body is fixed in the dead lever below, and the guide plate is fixed in cover body the place ahead, and the guide plate cross-section is thick water droplet shape of rear side in front side, and speed measuring device and fairing are appearance symmetrical structure, and outer tube one side is equipped with the balancing weight for the atress is the same about this flow measuring equipment, thereby makes molten steel flow direction and guide plate direction keep dynamic balance, guarantees that molten steel flow direction is unanimous with the rotation direction who is used for measuring runner, guarantees measuring accuracy.
3. The rectifying plates are fixed on two sides of the rear of the cover body, the outer sides of the rectifying plates on two sides are planes, the inner sides are curved surfaces which are thick in front and thin in back, molten steel on the outer sides of the rectifying plates on two sides can pass through less influences, vortex flow in the middle of the rectifying plates can form a low-pressure area under the action of the curved surfaces on the inner sides of the rectifying plates, so that the molten steel can flow through the rectifying plates in an accelerated mode, accumulation of the molten steel can not be caused, incoming vortex flow is rectified, influences on measured molten steel flow velocity data are reduced, and measurement accuracy is guaranteed.
4. The inner tube is arranged in the outer tube, a vacuum cavity is arranged between the outer tube and the inner tube, the encoder is fixed in the inner tube, the lead is arranged in the inner tube through the supporting frame and positioned at the center of the inner tube, the direct contact of the tube wall of the inner tube is avoided, the lead and the encoder can be effectively insulated, the lead and the encoder can work normally in high-temperature molten steel, and the normal work of the flow velocity measuring equipment is ensured.
The realization, functional characteristics and advantages of the present invention are further described with reference to the accompanying drawings in combination with the embodiments.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is an exploded view of the fixture of the present invention.
Fig. 3 is a schematic diagram of the overall structure of the speed measuring device and the rectifying device of the present invention.
Fig. 4 is a cross-sectional view of the cover of the present invention.
Fig. 5 is a cross-sectional view of the outer tube and inner tube of the present invention.
Fig. 6 is a cross-sectional view of a baffle of the present invention.
Fig. 7 is a cross-sectional view of a rectifying plate of the present invention.
Reference numerals: a mounting plate 1; a first screw 2; a mounting rod 3; a slider 4; a second screw 5; a slide bar 6; a fixing rod 7; a cover 8; a rotating wheel 9; an outer tube 10; an inner tube 11; a vacuum chamber 12; an encoder 13; a wire 14; a support 15; a counterweight 16; a display screen 17; a limit groove 18; a deflector 19; and a rectifying plate 20.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments, and components and arrangements of specific examples are described below for the purpose of simplifying the disclosure of the present invention, which are, of course, merely examples and are not intended to limit the present invention.
Next, a continuous casting mold molten steel flow rate measuring apparatus according to an embodiment of the present invention is described with reference to the accompanying drawings, and as shown in fig. 1 to 7, the continuous casting mold molten steel flow rate measuring apparatus includes a fixing device including a mounting plate 1, a mounting rod 3, a slider 4, and a slide rod 6, the mounting plate 1 being fixed to the mold by a first screw 2, the slide rod 6 being fixed to the mounting plate 1, the slider 4 being slidably mounted to the slide rod 6, second screws 5 being provided at both sides, the mounting rod 3 being fixed under the slider 4.
In particular embodiments: the tightness of the second screw 5 is adjusted, so that the sliding block 4 can slide on the sliding rod 6 or be fixed, and the downward length of the installation rod 3 is adjusted, so that the height of the speed measuring device extending into molten steel is adjusted, and the molten steel can be measured at multiple points conveniently, so that different measuring conditions can be adapted.
As shown in fig. 3, fig. 4 and fig. 5, the continuous casting crystallizer molten steel flow velocity measurement device comprises a velocity measurement device, the velocity measurement device comprises a fixed rod 7, a cover body 8, a rotating wheel 9, an outer tube 10, an inner tube 11, an encoder 13, a wire 14 and a display screen 17, wherein the fixed rod 7 is rotatably arranged below the mounting rod 3, the cover body 8 is fixed below the fixed rod 7, the front opening of the cover body 8 is large, the rear opening is small, the rotating wheel 9 is arranged in the cover body 8, a plurality of hemispherical shells uniformly distributed around the rotating wheel 9 are arranged, the cover body 8 is provided with a groove corresponding to the rotating wheel 9, through holes are arranged behind the groove, molten steel entering the groove can flow out better, the outer tube 10 is fixed above the cover body 8 and behind the fixed rod 7, an arc-shaped limiting groove 18 corresponding to the outer tube 10 is arranged on the mounting plate 1, the inner tube 11 is arranged in the outer tube 10, a vacuum cavity 12 is arranged between the outer tube 10 and the inner tube 11, the encoder 13 is fixed in the inner tube 11, the display screen 17 is fixed on the mounting plate 1, a corresponding data processing module is arranged in the display screen 17, the inner tube 13 is connected with the wire 14 through the wire 17, and the wire 11 is prevented from being directly contacted with the inner tube 11, and the wire 11 is prevented from being directly contacted with the center by the wire 11.
In particular embodiments: the speed measuring device stretches into molten steel through the fixing device, the molten steel enters from the front of the cover body 8, the rotating wheel 9 is pushed to rotate, the encoder 13 records the rotating data of the rotating wheel 9, the rotating data are transmitted to the display screen 17 through the lead 14, analysis, calculation and display results are carried out, and the data after preheating for a certain time are taken to be the flow rate of the molten steel at the position.
As shown in fig. 6 and 7, the apparatus for measuring the flow rate of molten steel in a continuous casting mold comprises a rectifying device, wherein the rectifying device comprises a guide plate 19 and a rectifying plate 20, the guide plate 19 is fixed in front of a cover body 8, the section of the guide plate 19 is in the shape of a water drop with a thick front side and a thin rear side, the rectifying plate 20 is fixed on two sides of the rear of the cover body 8, the outer sides of the rectifying plates 20 on the two sides are planes, and the inner sides are curved surfaces with a thick front side and a thin rear side.
In particular embodiments: when the speed measuring device stretches into molten steel, the front end of the guide plate 19 faces the flow direction of the molten steel, as the speed measuring device and the rectifying device are of an appearance symmetrical structure, and the balancing weight 16 is arranged on one side of the outer tube 10, so that the left and right stress of the flow measuring device is the same, the flow direction of the molten steel and the direction of the guide plate 19 are kept in dynamic balance, if the flow direction of the molten steel and the direction of the guide plate 19 deviate, the left and right fluid pressure difference of the guide plate 19 is increased, the guide plate 19 and the speed measuring device are pushed to rotate by taking the fixing rod 7 as a central shaft, the flow direction of the guide plate 19 and the flow direction of the molten steel tend to be consistent, the flow direction of the molten steel and the rotation direction of the rotating wheel 9 for measurement are guaranteed to be consistent, and the measurement accuracy is guaranteed.
During measurement, as the flow measuring equipment stretches into, molten steel at the rear forms turbulent eddies, then the eddies flow through the rectifying plates 20 at the two sides, according to the coanda effect, molten steel at the outer sides of the rectifying plates 20 at the two sides can be less influenced to pass through, and the eddies flow in the middle of the rectifying plates 20 can form a low-pressure area under the action of the curved surface at the inner side of the rectifying plates 20, so that the flowing through the rectifying plates 20 is accelerated, the accumulation of molten steel is not caused, the incoming rotating eddies rectify, and the influence on measured molten steel flow velocity data is reduced.
Working principle: firstly, tightness of the second screw 5 is adjusted, the sliding block 4 can slide on the sliding rod 6 or be fixed, and then the downward length of the installation rod 3 is adjusted, so that the speed measuring device is adjusted to extend into molten steel, then the speed measuring device is extended into the molten steel through the fixing device, the front end of the guide plate 19 faces the flow direction of the molten steel, as the speed measuring device and the rectifying device are of an appearance symmetrical structure, and the balancing weight 16 is arranged on one side of the outer tube 10, the left and right stress of the flow measuring device is the same, so that the flow direction of the molten steel and the direction of the guide plate 19 keep dynamic balance, the molten steel is enabled to form turbulence eddies due to the extension of the flow measuring device, then the eddies flow through the rectifying plates 20 on two sides, according to the coanda effect, the molten steel on the outer sides of the rectifying plates 20 can be less influenced to pass through, the eddies flow in the middle of the rectifying plates 20 can form a low-pressure area under the action of the curved surface on the inner side of the rectifying plates 20, so that the molten steel is accelerated to flow through the rectifying plates 20, the accumulation of the molten steel can not be caused, and then the molten steel enters from the front of the cover 8 through the outer tube 19, the rotating wheel 9 is pushed to rotate, the encoder 13 is driven to rotate, the molten steel is formed, the data is preheated, the data is displayed by the wire, and the data is displayed 17, and the flow speed is displayed, and the result is displayed, and the data is analyzed.
Claims (9)
1. The utility model provides a continuous casting crystallizer molten steel velocity of flow survey equipment which characterized in that: comprising
The fixing device comprises a mounting plate, a mounting rod, a sliding block and a sliding rod, wherein the mounting plate is fixed on the crystallizer through a first screw, the sliding rod is fixed on the mounting plate, the sliding block is slidably arranged on the sliding rod, second screws are arranged on two sides of the sliding block, and the mounting rod is fixed below the sliding block;
the speed measuring device comprises a fixed rod, a cover body, a rotating wheel, an outer tube, an inner tube, an encoder, a wire and a display screen, wherein the fixed rod is rotatably arranged below the mounting rod;
the rectifying device comprises a guide plate and a rectifying plate, wherein the guide plate is fixed in front of the cover body, the rectifying plate is fixed on two sides of the rear of the cover body, the outer sides of the rectifying plates on two sides are planes, and the inner sides of the rectifying plates are curved surfaces with thick front and thin rear.
2. The apparatus for measuring the flow rate of molten steel in a continuous casting mold according to claim 1, wherein the mounting plate is provided with an arc-shaped limit groove corresponding to the outer tube.
3. The apparatus for measuring the flow rate of molten steel in a continuous casting mold according to claim 1, wherein the front opening of the cover is large and the rear opening is small.
4. The apparatus for measuring the flow rate of molten steel in a continuous casting mold according to claim 1, wherein a plurality of hemispherical shells are uniformly distributed around the rotating wheel.
5. The apparatus for measuring the flow rate of molten steel in a continuous casting mold according to claim 4, wherein the cover is provided with a groove corresponding to the runner, and a through hole is provided behind the groove.
6. The apparatus for measuring the flow rate of molten steel in a continuous casting mold according to claim 1, wherein a vacuum chamber is provided between the outer tube and the inner tube.
7. The apparatus for measuring the flow rate of molten steel in a continuous casting mold according to claim 1, wherein the wire is installed in the inner tube through the supporting frame and is located at the center of the inner tube.
8. The apparatus for measuring the flow rate of molten steel in a continuous casting mold according to claim 1, wherein the cross section of the deflector is in the shape of a water drop with a thick front side and a thin rear side.
9. The apparatus for measuring the flow rate of molten steel in a continuous casting mold according to claim 6, wherein the speed measuring device and the rectifying device are in a symmetrical structure, and a balancing weight is arranged on one side of the outer tube.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210043827.5A CN114354971B (en) | 2022-01-14 | 2022-01-14 | Continuous casting crystallizer molten steel flow velocity measurement equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210043827.5A CN114354971B (en) | 2022-01-14 | 2022-01-14 | Continuous casting crystallizer molten steel flow velocity measurement equipment |
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| CN114354971A CN114354971A (en) | 2022-04-15 |
| CN114354971B true CN114354971B (en) | 2023-07-21 |
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2022
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