CN202137351U - Heated mold continuous casting liquid supplementation and liquid level control device - Google Patents
Heated mold continuous casting liquid supplementation and liquid level control device Download PDFInfo
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- CN202137351U CN202137351U CN201120173075U CN201120173075U CN202137351U CN 202137351 U CN202137351 U CN 202137351U CN 201120173075 U CN201120173075 U CN 201120173075U CN 201120173075 U CN201120173075 U CN 201120173075U CN 202137351 U CN202137351 U CN 202137351U
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Abstract
The utility model discloses a heated mold continuous casting liquid supplementation and liquid level control device used for controlling the constancy of the liquid level of metal liquid in a continuous casting crucible. The device comprises a liquid level control piston component, a liquid level measurement component and a liquid level control system, wherein, the liquid level control piston component and the liquid level measurement component are arranged at the upper part of the continuous casting crucible; the liquid level control system is respectively connected with the liquid level control piston component and the liquid level measurement component through circuits; and the liquid level measurement component arranged at the upper part of the continuous casting crucible comprises a reference liquid level electrode, a working liquid level lower limit electrode and a working liquid level upper limit electrode which are arranged in sequence from low to high and respectively connected with the liquid level control system through circuits. The device not only solves the problem of the existence of misoperation during practical production and application of the control device in the prior art, but also can reduce interferences of the temperature of the supplemented metal liquid to the heated mold continuous casting process.
Description
Technical field
The utility model belongs to the hot-mold continuous cast technical field, is specifically related to a kind of automatic liquid supply and fluid level control device, refers in particular to the device of the stable and constant control of liquid level that in the hot-mold continuous cast process, is used for the molten metal temperature.
Background technology
The hot-mold continuous cast technology is a metal wire base manufacturing technology that directional solidification technique is combined with the continuous casting technology; Be characterized in to cast continuously the surface and be mirror status; And inner no shrinkage cavity, shrinkage porosite, pore, the monocrystalline that casting flaw such as is mingled with or the metal wire base of columnar structure belong to a kind of nearly end form shape base line production technology.The key of hot-mold continuous cast technology just is, accurately controls process conditions, makes ingot casting in leaving a bit of distance of thermal crystalline device, and the top layer liquid film can stably be kept the shape of strand ingot, realizes that then directional solidification forms the line base that the surface is mirror status.This just requires strict control is realized in the position of the pressure of thermal crystalline device exit liquid metals and liquid-solid boundary.Control the pressure of thermal crystalline device exit liquid metals exactly, and the position of stabilizing solution liquid/solid interface constantly the outer a bit of fluid column of maintaining heat casting mold keep strand ingot shape shape, finally form the surface and be the mirror status strand.The pressure of thermal crystalline device exit liquid metals and any fluctuation of liquid-solid boundary position all can cause the surface to be the monocrystalline of mirror status or the failure that the column crystal strand forms.
In the prior art, the metal liquid level control device in the disclosed hot-mold continuous cast technology of Chinese patent ZL200720076706.1, the liquid level control in the time of can solving fluid infusion in the existing hot-mold continuous cast technology has effectively realized the liquid level closed-loop control in the overall process.When realizing producing continuously ingot casting; After pulling out the line base of some; When needing the liquid make-up metal, this device utilizes the make-and-break signal of the special fluid infusion electrode that is provided with in fluid infusion shutoff valve outlet place to realize the switching of piston control mode, accomplishes the constant control of the liquid level of different phase.
But the method for utilizing this device to carry out the constant control of liquid level has the problem of misoperation.Because fluid infusion electrode break-make is to lean on the short circuit of the molten metal of fluid infusion passage to realize with breaking off; Therefore when fluid infusion, the fluid infusion electrode is connected by molten metal; Fluid infusion finishes, and liquid metal stream is empty, and the fluid infusion electrode breaks off immediately.The application of this patent in production practices shows, utilizes this group make-and-break signal to realize the switching of piston control mode, some misoperations can occur; Comprise when the fluid infusion shutoff valve and opening not at that time that metal liquid stream and fluid infusion channel cross-section size do not match, the fluid infusion electrode will take place contact unstable with molten metal; Seemingly connect non-connecing, thereby misoperation appears in the switching of cause piston control mode, the up-down of piston causes confusion; Liquid level is out of control, finally causes the interruption of crystal pulling.
The utility model content
The purpose of the utility model provides a kind of hot-mold continuous cast fluid infusion and fluid level control device, utilizes work upper limit electrode to substitute the switching that the fluid infusion electrode is realized the piston control mode, accomplishes the constant control of liquid level of different phase; Not only solved there is misoperation in control device of the prior art when production application problem, and can reduce of the interference of the temperature of the molten metal that is replenished the hot-mold continuous cast process.
For realizing above-mentioned purpose, the technical scheme of the utility model provides a kind of hot-mold continuous cast fluid infusion and fluid level control device, and the liquid level that is used for the molten metal in hot-mold continuous cast process control continuous casting crucible is constant; This control device comprises: be arranged on the liquid level control piston assembly and the level gauging assembly on continuous casting crucible top, the tank level control system that is connected through circuit with described liquid level control piston assembly and level gauging assembly respectively.
Wherein, Described level gauging assembly is arranged on the top of the first of continuous casting crucible; Comprise the benchmark level electrode that is arranged on different liquid level points place successively from low to high; Work liquid level lower limit electrode and work liquid level upper limit electrode, and the corresponding benchmark liquid level electric contact that forms, work liquid level lower limit electric contact and work liquid level upper limit electric contact; Described benchmark level electrode, work liquid level lower limit electrode is connected through circuit with tank level control system respectively with work liquid level upper limit electrode.
Described liquid level control piston assembly comprises the liquid level control piston, and this liquid level control piston is arranged on the top of the first of continuous casting crucible.
Described liquid level control piston assembly also comprises the piston driver that is connected with described liquid level control piston; This piston driver is connected through circuit with described tank level control system.
Described level gauging assembly also comprises the superelevation level electrode that is connected through circuit with tank level control system, and the corresponding superelevation liquid level electric contact that forms; The set liquid level point of this superelevation level electrode is higher than the benchmark level electrode, the liquid level point of work liquid level lower limit electrode and the setting of work liquid level upper limit electrode.
Described tank level control system adopts the PLC tank level control system.
The utility model also comprises the fluid infusion assembly that is connected with the continuous casting crucible; This fluid infusion assembly comprises fluid infusion pond and the fluid infusion passage that connects successively, and this fluid infusion passage is connected with described continuous casting crucible.
Described fluid infusion assembly also comprises the fluid infusion shutoff valve that is arranged on the fluid infusion passage.
Hot-mold continuous cast fluid infusion that the utility model provided and fluid level control device be one reliable and do not need the artificial full-automatic liquid level invariant control system of getting involved.
The utility model is not owing to be provided with the fluid infusion electrode at fluid infusion passage place; Not only can not produce misoperation; Also make the unlatching size of fluid infusion shutoff valve can not have influence on sending of fluid infusion signal; Therefore can be according to the additional molten metal temperature conditions of coming (difference of the molten metal temperature that requires with hot-mold continuous cast) from the melting furnace cast, the unlatching size of regulating the fluid infusion shutoff valve makes additional molten metal in the fluid infusion pond, leave time enough; Cause the molten metal temperature near casting temperature; Flow into the continuous casting crucible again, further reached and reduced the effects of jamming of additional molten metal temperature, realize the steady production of endless directional solidification line base under the constant temperature and pressure the hot-mold continuous cast process.
Description of drawings
Fig. 1 is the structural representation of hot-mold continuous cast fluid infusion and fluid level control device in the utility model.
Fig. 2 is the structural representation of level gauging assembly in the utility model.
The specific embodiment
Below in conjunction with Fig. 1 and Fig. 2, specify a preferred embodiment of the utility model.
As shown in Figure 1, be the hot-mold continuous cast fluid infusion of the utility model and the structural representation of fluid level control device.This control device is used for all can carrying out the constant control of liquid level to the molten metal in the continuous casting crucible 2 automatically in the different phase of hot-mold continuous cast process; This control device comprises: the fluid infusion assembly that is connected with continuous casting crucible 2; Be arranged on the liquid level control piston assembly and the level gauging assembly 3 on the top of continuous casting crucible 2, the tank level control system that is connected with level gauging assembly 3 with described liquid level control piston assembly respectively.
Wherein, described liquid level control piston assembly comprises liquid level control piston 1, and the piston driver (not shown) that is connected with this liquid level control piston 1.Described liquid level control piston 1 is arranged on the top of the left-half of continuous casting crucible 2.
Described level gauging assembly 3 is arranged on the top of the right half part of continuous casting crucible 2.As shown in Figure 2; This level gauging assembly 3 comprises the benchmark level electrode 31 that is arranged on different liquid level points place successively from low to high; Work liquid level lower limit electrode 32, work liquid level upper limit electrode 33 and superelevation level electrode 34, and the corresponding benchmark liquid level electric contact that forms; Work liquid level lower limit electric contact, work liquid level upper limit electric contact and superelevation liquid level electric contact.Described benchmark level electrode 31; Work liquid level lower limit electrode 32; Work liquid level upper limit electrode 33 is connected through circuit with tank level control system respectively with superelevation level electrode 34, and when each electrode did not contact with continuous casting crucible 2 interior molten metals, the electric contact of this electrode was in off-state; And when described each electrode when molten metal in the continuous casting crucible 2 contacts, the electric contact of this electrode promptly is switched on; And to tank level control system transmission corresponding electrode conducting whether signal.
Described tank level control system (not shown) also is connected through circuit with piston driver; It is according to the electrode conduction whether signal that receives; Judge the liquid level of the molten metal in the continuous casting crucible 2; And according to the concrete stage in the current ongoing hot-mold continuous cast process, drive liquid level control piston 1 through the control piston drive unit and rise or descend, realize that the liquid level of the molten metal in the real-time closed-loop control continuous casting crucible 2 is constant.
In the present embodiment, described tank level control system adopts the PLC tank level control system.
Described fluid infusion assembly comprises the fluid infusion pond 8 and fluid infusion passage 7 that connects successively; This fluid infusion passage 7 is connected with described continuous casting crucible 2; Molten metal in the described fluid infusion pond 8 constantly flows into continuous casting crucible 2 through fluid infusion passage 7, replenishes the molten metal content in the continuous casting crucible 2.
Described fluid infusion assembly also comprises the fluid infusion shutoff valve 6 that is arranged on the fluid infusion passage 7, can control the molten metal flow that is flowed in the continuous casting crucibles 2 by fluid infusion pond 8 through regulating this fluid infusion shutoff valve 6.
Below specify the operation principle of described hot-mold continuous cast fluid infusion of the utility model and fluid level control device, promptly how to utilize level gauging assembly 3 to come control piston to realize the real-time closed-loop control of constant level.
Described reference electrode 31 is positioned at down the liquid level of molten metals such as copper liquid of continuous casting crucible 2 below 4 in working order all the time, so benchmark liquid level electric contact is connected all the time and as base stage.Described work liquid level lower limit electrode 32; Work liquid level upper limit electrode 33 is set respectively according to hot-mold continuous cast technology with superelevation level electrode 34 residing liquid level points in advance, is expressed as work liquid level lower limit, the work liquid level upper limit and superelevation liquid level successively.When the liquid level 4 of the molten metal in the continuous casting crucible 2 goes up and down; Respectively can with work liquid level lower limit electrode 32, work liquid level upper limit electrode 33 contacts with superelevation level electrode 34, further will make work liquid level lower limit electric contact respectively; Work liquid level upper limit electric contact and superelevation liquid level electric contact are switched on; Will be respectively form the electric contact type loop, and send signal, thereby to judge current liquid level be to be in work liquid level lower limit to tank level control system to tank level control system with benchmark liquid level electric contact as base stage; Perhaps be in the work liquid level upper limit; Perhaps be in the superelevation liquid level, and then 1 rising of corresponding again control liquid level control piston or decline, the liquid level of the molten metal in the final real-time closed-loop control continuous casting crucible 2 is constant.Wherein, described superelevation level electrode 34 is used to be provided with last line of defense, has warning function, and when this was highly put when liquid level arrival, whether need descend as early as possible metal liquid level or check control device broke down, and avoid molten metal to overflow and have an accident.
Concrete, the fluid infusion in the hot-mold continuous cast process is during the stage, and the molten metal in the fluid infusion pond 8 constantly flows into continuous casting crucible 2 through fluid infusion passage 7, replenishes the molten metal content in the continuous casting crucible 2.Electric contact by when work liquid level upper limit electrode 33 and work liquid level lower limit electrode 32 all is switched on; Send Continuity signal to tank level control system respectively; The liquid level 4 that this tank level control system is judged current molten metal has been in the work liquid level upper limit; Therefore its control liquid level control piston 1 rises; Make the liquid level of the molten metal in the continuous casting crucible 2 descend, break off that the electric contact of the liquid level lower limit electrode 32 of working this moment is still connected until the electric contact of work liquid level upper limit electrode 33; Then the liquid levels judged in the current continuous casting crucible 2 according to received signal of tank level control system are in the normal condition between the work liquid level upper limit and the work liquid level lower limit, so this tank level control system control liquid level control piston 1 stops.
Continuation is to fluid infusion in the continuous casting crucible 2; Make the electric contact of work liquid level upper limit electrode 33 be switched on once more, after tank level control system receives the corresponding electrode signal, control liquid level control piston 1 again and rise; Make the liquid level of the molten metal in the continuous casting crucible 2 descend; Electric contact until work liquid level upper limit electrode 33 breaks off once more, and the electric contact of liquid level lower limit electrode 32 is still connected but work this moment, and tank level control system makes liquid level control piston 1 stop once more.
Constantly circulate repeatedly according to above-mentioned principle and step, thereby the fluid infusion in the hot-mold continuous cast process realizes the control of liquid level automated closed-loop during the stage, make continuous casting crucible 2 interior metal bath surfaces 4 remain at the height of the work liquid level upper limit.
After the fluid infusion stage in the hot-mold continuous cast process accomplishes; Along with single-crystal metal line base is constantly drawn from be connected the hot-cast device 5 that is provided with continuous casting crucible 2; The liquid level of the molten metal in the continuous casting crucible 2 constantly descends; Electric contact until work liquid level upper limit electrode 33 and work liquid level lower limit electrode 32 all breaks off, and sends cut-off signal to tank level control system respectively, and the liquid level 4 that this tank level control system is judged current molten metal has been in work liquid level lower limit; Therefore its control liquid level control piston 1 descends; Make the liquid level of the molten metal in the continuous casting crucible 2 rise, connect that the electric contact of the liquid level upper limit electrode 33 of working this moment still breaks off until the electric contact of work liquid level lower limit electrode 32; Then the liquid levels judged in the current continuous casting crucible 2 according to received signal of tank level control system are in the normal condition between the work liquid level upper limit and the work liquid level lower limit, so this tank level control system control liquid level control piston 1 stops.
Keep and draw single-crystal metal line base; The liquid level of the molten metal in the continuous casting crucible 2 begins again to descend; Make the electric contact of work liquid level lower limit electrode 32 be disconnected once more, after tank level control system receives the corresponding electrode signal, control liquid level control piston 1 again and descend; Make the liquid level of the molten metal in the continuous casting crucible 2 rise; Electric contact until work liquid level lower limit electrode 32 is connected once more, and the electric contact of liquid level upper limit electrode 33 still breaks off but work this moment, and tank level control system makes liquid level control piston 1 stop once more.
Constantly circulate repeatedly according to above-mentioned principle and step, thereby the crystal-pulling in the hot-mold continuous cast process realizes the control of liquid level automated closed-loop during the stage (not fluid infusion), make continuous casting crucible 2 interior metal bath surfaces 4 remain at the height of work liquid level lower limit.
In sum; In whole hot-mold continuous cast process; Molten metal in the continuous casting crucible remains between the bound of work liquid level, effectively solves during hot-mold continuous cast line base is produced in the prior art continuity problem to the constant control of liquid level of continuous casting crucible, and can not produce misoperation; Therefore, hot-mold continuous cast fluid infusion that the utility model provided and fluid level control device be one quite reliable and do not need the artificial full-automatic liquid level invariant control system of getting involved.
The utility model is not owing to be provided with the fluid infusion electrode at fluid infusion passage place; Not only can not produce misoperation; Also make the unlatching size of fluid infusion shutoff valve can not have influence on sending of fluid infusion signal; Therefore can be according to the additional molten metal temperature conditions of coming (difference of the molten metal temperature that requires with hot-mold continuous cast) from the melting furnace cast, the unlatching size of regulating the fluid infusion shutoff valve makes additional molten metal in the fluid infusion pond, leave time enough; Cause the molten metal temperature near casting temperature; Flow into the continuous casting crucible again, further reached and reduced the effects of jamming of additional molten metal temperature, realize the steady production of endless directional solidification line base under the constant temperature and pressure the hot-mold continuous cast process.
Although the content of the utility model has been done detailed introduction through above-mentioned preferred embodiment, will be appreciated that above-mentioned description should not be considered to the restriction to the utility model.After those skilled in the art have read foregoing, for the multiple modification of the utility model with to substitute all will be conspicuous.Therefore, the protection domain of the utility model should be limited appended claim.
Claims (7)
1. hot-mold continuous cast fluid infusion and fluid level control device, the liquid level that is used for the molten metal in hot-mold continuous cast process control continuous casting crucible (2) is constant; It is characterized in that,
This control device comprises: be arranged on the liquid level control piston assembly and the level gauging assembly (3) on continuous casting crucible (2) top, the tank level control system that is connected through circuit with described liquid level control piston assembly and level gauging assembly (3) respectively;
Described level gauging assembly (3) is arranged on the top of the first of continuous casting crucible (2); Comprise the benchmark level electrode (31) that is arranged on different liquid level points place successively from low to high; Work liquid level lower limit electrode (32) and work liquid level upper limit electrode (33); And the corresponding benchmark liquid level electric contact that forms, work liquid level lower limit electric contact and work liquid level upper limit electric contact;
Described benchmark level electrode (31), work liquid level lower limit electrode (32) is connected through circuit with tank level control system respectively with work liquid level upper limit electrode (33).
2. hot-mold continuous cast fluid infusion as claimed in claim 1 and fluid level control device is characterized in that, described liquid level control piston assembly comprises liquid level control piston (1), and this liquid level control piston (1) is arranged on the top of the first of continuous casting crucible (2).
3. hot-mold continuous cast fluid infusion as claimed in claim 2 and fluid level control device is characterized in that, described liquid level control piston assembly also comprises the piston driver that is connected with described liquid level control piston (1); This piston driver is connected through circuit with described tank level control system.
4. hot-mold continuous cast fluid infusion as claimed in claim 1 and fluid level control device; It is characterized in that; Described level gauging assembly (3) also comprises the superelevation level electrode (34) that is connected through circuit with tank level control system, and the corresponding superelevation liquid level electric contact that forms; The set liquid level point of this superelevation level electrode (34) is higher than benchmark level electrode (31), the liquid level point that work liquid level lower limit electrode (32) and work liquid level upper limit electrode (33) are provided with.
5. hot-mold continuous cast fluid infusion as claimed in claim 1 and fluid level control device is characterized in that, described tank level control system adopts the PLC tank level control system.
6. hot-mold continuous cast fluid infusion as claimed in claim 1 and fluid level control device is characterized in that, this control device also comprises the fluid infusion assembly that is connected with continuous casting crucible (2);
Described fluid infusion assembly comprises fluid infusion pond (8) and the fluid infusion passage (7) that connects successively;
Described fluid infusion passage (7) is connected with continuous casting crucible (2).
7. hot-mold continuous cast fluid infusion as claimed in claim 6 and fluid level control device is characterized in that, described fluid infusion assembly also comprises the fluid infusion shutoff valve (6) that is arranged on the fluid infusion passage (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120173075U CN202137351U (en) | 2011-05-27 | 2011-05-27 | Heated mold continuous casting liquid supplementation and liquid level control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120173075U CN202137351U (en) | 2011-05-27 | 2011-05-27 | Heated mold continuous casting liquid supplementation and liquid level control device |
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| Publication Number | Publication Date |
|---|---|
| CN202137351U true CN202137351U (en) | 2012-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120173075U Expired - Fee Related CN202137351U (en) | 2011-05-27 | 2011-05-27 | Heated mold continuous casting liquid supplementation and liquid level control device |
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| CN (1) | CN202137351U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106493330A (en) * | 2016-11-25 | 2017-03-15 | 河南科技大学 | Metal liquid level detection control apparatus for hot-mold continuous cast |
| CN110270671A (en) * | 2019-07-28 | 2019-09-24 | 山东莱钢永锋钢铁有限公司 | One kind is adjusted based on electrical PID and reduces conticaster closure works system and method |
| CN110586885A (en) * | 2019-10-24 | 2019-12-20 | 广东工业大学 | Automatic liquid supplementing device |
-
2011
- 2011-05-27 CN CN201120173075U patent/CN202137351U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106493330A (en) * | 2016-11-25 | 2017-03-15 | 河南科技大学 | Metal liquid level detection control apparatus for hot-mold continuous cast |
| CN106493330B (en) * | 2016-11-25 | 2018-08-03 | 河南科技大学 | Metal liquid level detection control apparatus for hot-mold continuous cast |
| CN110270671A (en) * | 2019-07-28 | 2019-09-24 | 山东莱钢永锋钢铁有限公司 | One kind is adjusted based on electrical PID and reduces conticaster closure works system and method |
| CN110586885A (en) * | 2019-10-24 | 2019-12-20 | 广东工业大学 | Automatic liquid supplementing device |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120208 Termination date: 20180527 |