CN215811308U - Molten steel TOS measurement and control composite probe - Google Patents
Molten steel TOS measurement and control composite probe Download PDFInfo
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- CN215811308U CN215811308U CN202121670011.2U CN202121670011U CN215811308U CN 215811308 U CN215811308 U CN 215811308U CN 202121670011 U CN202121670011 U CN 202121670011U CN 215811308 U CN215811308 U CN 215811308U
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Abstract
The utility model relates to the technical field of metallurgical liquid metal measurement and control, in particular to a molten steel TOS measurement and control composite probe, which comprises a coated sand carrier, wherein a temperature measuring element, an oxygen measuring element and a molten steel sampler are arranged on the coated sand carrier, a steel pipe is arranged in the coated sand carrier, a plastic heat preservation box and coated sand filled with protection are arranged in the steel pipe, the temperature measuring element and the cold end of the oxygen measuring element are embedded into the plastic heat preservation box after being welded on a compensation lead, a V-shaped clamping groove is arranged on the steel pipe, a V-shaped plastic connector is arranged at a V-shaped opening of the V-shaped clamping groove, and the V-shaped plastic connector is respectively connected with the positive and negative electrodes of the temperature measuring element and the positive and negative electrodes of the oxygen measuring element. The temperature measuring element, the oxygen measuring element and the molten steel sampler are integrated by adopting the coated sand carrier, and the coated sand carrier is used in the molten steel smelting process, so that parameters such as temperature, oxygen activity and the like of a molten steel medium are measured and controlled on line, the measured and controlled on line in real time are matched with a computer smelting process model, and the realization of the process time and process rhythm of fine steel is ensured.
Description
Technical Field
The utility model relates to the technical field of metallurgical liquid metal measurement and control, in particular to a molten steel TOS measurement and control composite probe.
Background
China is a traditional big iron and steel smelting country, the first international market of the yield of crude steel is, the difference between fine steel products and the Western ratio is large, and the international computer steelmaking technology has been rapidly advanced for 80 years. The method is characterized in that a plurality of advanced steel smelting technical devices are introduced into China since the beginning of the revolution, wherein the introduction of the smelting sensor technology powerfully promotes the development of China, for example, the process control technology of converter steelmaking, the measurement and control technology of process parameters and other aspects of China have short boards, the core of the process measurement and control technology is the sensing technology, and the SL computer is used for 'one-key' full-automatic steelmaking completely according to the information of the smelting sensor. The measurement and control of the smelting fine steel can not be realized without an advanced smelting sensor technology. Especially the measurement and control technology of a smelting sensor for post-furnace refining determines the process control of the finished steel. The requirement of smelting fine steel is realized by developing domestic smelting sensor products.
SUMMERY OF THE UTILITY MODEL
Aiming at the problems, the utility model provides a molten steel TOS measurement and control composite probe which can quickly realize the detection and control of multiple parameters such as the temperature, the oxygen activity and the like of a molten steel medium in the smelting process, the information acquired by the product is transmitted to a CJ-100A online analysis instrument and the data is calculated and sent to an ERP network system, the effective control of the technological process is realized, the traditional data acquisition mode is changed, the sampling analysis time is shortened, the effective control of the technological time of fine steel is ensured, new steel is developed, and the product quality is ensured.
In order to achieve the purpose, the technical scheme applied by the utility model is as follows:
the utility model provides a compound probe is observed and controled to molten steel TOS, including tectorial membrane sand carrier, be equipped with temperature element on the tectorial membrane sand carrier, oxygen measuring element and molten steel sampler, be equipped with the steel pipe in the tectorial membrane sand carrier, be equipped with plastics heat preservation box in the steel pipe and fill the tectorial membrane sand of protection, temperature element and oxygen measuring element's cold junction welding back on the compensation wire, in the embedding plastics heat preservation box, be equipped with V type draw-in groove on the steel pipe, V type plastics connector is installed to V type mouth department of V type draw-in groove, V type plastics connector is connected with temperature element's positive negative pole and oxygen measuring element's positive negative pole respectively.
According to the scheme, the temperature measuring element comprises a thermocouple metal wire, and after the hot end of the thermocouple metal wire is welded in a cross mode, the cold end of the thermocouple metal wire is respectively welded with the positive electrode of the compensation lead and the negative electrode of the compensation lead on the V-shaped plastic connector.
According to the above scheme, the oxygen measuring element comprises a zirconia electrolyte tube.
According to the scheme, the molten steel sampler is provided with a molten steel inlet.
According to the scheme, the steel pipe is provided with steel pipe outward salient points used for enhancing the structure and strength of the precoated sand, and the steel pipe is internally provided with steel pipe inward salient points used for being connected with the oxygen anode of the oxygen measurement element.
According to the scheme, the V-shaped plastic connector is provided with the plastic socket positioning rod for improving the strength, and the steel pipe is provided with the plastic socket clamping hole for limiting the V-shaped plastic connector.
According to the scheme, the steel pipe is further provided with a paper pipe, a conical precoated sand protective body with the length of 80 mm is solidified on the steel pipe, and the exposed 45 mm position of the steel pipe is inserted into the paper pipe after glue is applied.
According to the scheme, the protective paper cap and the protective steel cap are arranged outside the temperature measuring element and the oxygen measuring element.
According to the scheme, the interface of the temperature measuring element and the oxygen measuring element, which is in contact with the molten steel, is poured with the high-temperature quick-drying cement.
The utility model has the beneficial effects that:
the utility model adopts the structure, integrates the temperature measuring element, the oxygen measuring element and the molten steel sampler by adopting the precoated sand carrier, is used in the molten steel smelting process, measures and controls parameters of molten steel medium such as temperature, oxygen activity and the like on line, measures and controls on line in real time and matches with a computer smelting process model, ensures the realization of the rhythm of the time process of the fine steel process, effectively controls the addition of alloy quantity, changes the traditional high-energy-consumption smelting, realizes the negative energy steelmaking target, and has positive significance for reducing cost, energy and emission.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
in the figure: 1. a temperature measuring element; 2. an oxygen measuring element; 3. a molten steel sampler; 4. a steel pipe; 5. outwards protruding points of the steel pipe; 6, a V-shaped clamping groove; 7, a V-shaped plastic connector; 8. a compensating lead anode; 9. a compensating wire cathode; 10. a protective paper cap; 11. protecting the steel cap; 12. high-temperature quick-drying cement; 13. a plastic heat preservation box; 14. coating a sand carrier; 15. a plastic socket positioning rod; 16. a plastic socket fastening hole; 17. inward salient points of the steel pipe; 18. a paper tube;
Detailed Description
The technical solution of the present invention is described below with reference to the accompanying drawings and examples.
As shown in fig. 1, the composite probe for measuring and controlling the TOS of molten steel comprises a precoated sand carrier 14, wherein a temperature measuring element 1, an oxygen measuring element 2 and a molten steel sampler 3 are arranged on the precoated sand carrier 14, a steel pipe 4 is arranged in the precoated sand carrier 14, a plastic heat-insulating box 13 and precoated sand filled with protection are arranged in the steel pipe 4, the temperature measuring element 1 and the cold end of the oxygen measuring element 2 are embedded into the plastic heat-insulating box 13 after being welded on a compensation lead, a V-shaped clamping groove 6 is arranged on the steel pipe 4, a V-shaped plastic connector 7 is arranged at a V-shaped opening of the V-shaped clamping groove 6, and the V-shaped plastic connector 7 is respectively connected with the positive and negative poles of the temperature measuring element 1 and the positive and negative poles of the oxygen measuring element 2. The above constitutes the basic structure of the present invention.
By adopting the structural arrangement, the temperature measuring element 1, the oxygen measuring element 2 and the molten steel sampler 3 are integrated by adopting the coated sand carrier 14, the coated sand carrier is used in the molten steel smelting process, parameters such as temperature, oxygen activity and the like of a molten steel medium are measured and controlled on line, the real-time online measurement and control are carried out, and the coated sand carrier is matched with a computer smelting process model, so that the realization of the rhythm of the process time and the process of fine steel is ensured, the addition of alloy quantity is effectively controlled, the traditional high-energy-consumption smelting is changed, the negative-energy steelmaking target is realized, and the cost reduction, the energy conservation and the emission reduction have positive significance.
The working principle is as follows: after the TOS composite probe is inserted into the test gun plug-in, a manual or mechanical arm performs a test operation, and a measurement signal is calculated and displayed by the CJ-100A on-line analysis meter. The utility model can collect three parameters of temperature, oxygen activity and steel sample in one test, and respectively transmits related detection signals to an online analysis computer or an instrument for calculation (externally connected through a V-shaped plastic connector 7), thereby realizing the measurement and control process.
In practical application, the method can be used for controlling the process procedures of post-furnace refining LF, RH, VD, AOD and the like, realizes the on-line detection and prediction of parameters such as steelmaking temperature, oxygen activity and the like, provides information data for computer steelmaking, changes the traditional operation mode, accurately predicts the metallurgical raw materials and the process parameters, and realizes the requirements of energy conservation, emission reduction and fine steel smelting.
In this embodiment, the temperature measuring element 1 includes a thermocouple wire, and after the hot end of the thermocouple wire is cross-welded, the cold end of the thermocouple wire is respectively welded to the positive pole 8 and the negative pole 9 of the compensation wire on the V-shaped plastic connector 7.
Wherein, the positive and negative electrodes of the thermocouple metal wire are correspondingly welded with the positive electrode 8 of the compensation lead and the negative electrode 9 of the compensation lead on the V-shaped plastic connector 7 and are transmitted to the intelligent temperature measuring instrument.
Wherein, the thermocouple wire of the temperature measuring element 1 is made of a material with the diameter of 0.08mm (index number S or R).
The thermocouple wire material accords with GB/T18036-2008 standard, the standard stipulates a method for measuring the thermoelectromotive force of the platinum-rhodium thermocouple wire by using a fuse method and a comparison method, the standard is suitable for measuring the platinum-rhodium thermocouple wire with the diameter ranging from 0.05mm to 0.1mm, annealing treatment is carried out according to the standard, and the rapid temperature thermocouple accords with YB-163 standard.
In the present embodiment, the oxygen measuring element 2 comprises a zirconia electrolyte tube.
The oxygen measuring element 2 has an electromotive force of 5 millivolts when the measuring error is 1600 degrees, the oxygen activity measuring range is 1-1500 ppm, a molybdenum wire is inserted into a reference electrode of the oxygen measuring element 2 as an electromotive force leading-out electrode, the reference electrode leading-out electrode molybdenum wire is a cathode, a steel pipe oxygen anode is connected with a V-shaped plastic connector 7, and a real-time signal for online measurement is transmitted to a computer or an intelligent instrument and a data result is sent to a process system.
Wherein, the preparation of the oxygen measuring element 2: and (3) inspecting the zirconium oxide electrolyte tube (CaO stable), placing qualified products in a template hole, weighing 180-210 mg of reference electrodes, placing the reference electrodes into the zirconium oxide electrolyte tube, then placing Al2O3 and other materials, manually inserting molybdenum wires, pouring high-temperature quick-drying cement 12, drying in an oven for 20 hours, and storing for later use.
In this embodiment, the molten steel sampler 3 is provided with a molten steel inlet.
Wherein, the sampling principle of the molten steel sampler 3 is as follows: after the molten steel sampler 3 is rapidly inserted into molten steel, liquid metal automatically flows in through a quartz tube arranged at the mouth of the molten steel sampler 3 under the action of static pressure, the molten steel is solidified and formed in a few seconds, and after a steel sample is polished to meet the standard by a laboratory, the liquid metal is subjected to spectrum or chemical analysis to obtain data. The molten steel sampler 3 has a plurality of modes such as DT and RDT, the molten steel sampler 3 can adopt two modes of DT or RDT according to the needs of users,
wherein, the manufacture of the molten steel sampler 3: firstly, a steel sample box and a quartz tube are cleaned, wherein the steel sample box is formed by combining two semicircular boxes, steel clamps are used for positioning and combining, a cylindrical quartz tube is arranged at an opening part for introducing molten steel, and a protective cap is arranged at an inlet part of the quartz tube to prevent slag and impact damage to the quartz tube. Fastening with high-temperature material, adding deoxidizer according to the specification, and covering a protective cap for later use.
In this embodiment, the steel pipe 4 is provided with steel pipe outward protrusions 5 for reinforcing the structure and strength of the precoated sand, and the steel pipe 4 is provided with steel pipe inward protrusions 17 for connecting with the oxygen positive electrode of the oxygen measurement element 2.
In this embodiment, the V-shaped plastic connector 7 is provided with a plastic socket positioning rod 15 for improving strength, and the steel pipe 4 is provided with a plastic socket engaging hole 16 for limiting the V-shaped plastic connector 7. The probe core body can be prevented from being pulled out accidentally.
The V-shaped plastic connector 7 meets the national YB-163 standard, belongs to the structure design of the connector 604, and is compatible with a rapid thermocouple and all domestic and foreign industry test systems. The steel mill technology can realize direct oxygen determination and indirect carbon and Als determination within the temperature measuring range of 1550-1750 ℃ and the oxygen measuring range of 1-1500 ppm.
In this embodiment, the steel pipe 4 is solidified with a conical 80 mm long precoated sand protector, and the exposed 45 mm position of the steel pipe 4 is coated with glue and then inserted into the paper pipe 18, dried and solidified for standby.
In this embodiment, a protective paper cap 10 and a protective steel cap 11 are mounted outside the temperature measuring element 1 and the oxygen measuring element 2. The temperature measuring element 1 and the oxygen measuring element 2 of the composite probe are protected, and impact resistance is improved.
In this embodiment, the interfaces of the temperature measuring element 1 and the oxygen measuring element 2, which are in contact with the molten steel, are poured with high-temperature quick-setting cement 12. The thermal shock resistance of the probe is protected, and the measurement rate and the measurement precision of the probe are further ensured.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and those skilled in the art can make various modifications without departing from the spirit and scope of the present invention.
Claims (9)
1. The utility model provides a compound probe of molten steel TOS measurement and control which characterized in that: including tectorial membrane sand carrier (14), be equipped with temperature element (1), oxygen measuring element (2) and molten steel sampler (3) on tectorial membrane sand carrier (14), be equipped with steel pipe (4) in tectorial membrane sand carrier (14), be equipped with plastics heat preservation box (13) and fill in steel pipe (4) and have the tectorial membrane sand of protection, back on the compensation wire is welded with the cold junction of oxygen measuring element (2) in temperature element (1), embedding plastics heat preservation box (13), be equipped with V type draw-in groove (6) on steel pipe (4), V type plastics connector (7) are installed to the V type mouth department of V type draw-in groove (6), V type plastics connector (7) are connected with the positive negative pole of temperature element (1) and the positive negative pole of oxygen measuring element (2) respectively.
2. The composite probe for measuring and controlling TOS of molten steel according to claim 1, characterized in that: the temperature measuring element (1) comprises a thermocouple metal wire, and after the hot end of the thermocouple metal wire is welded in a cross mode, the cold end of the thermocouple metal wire is respectively welded with the positive pole (8) of the compensation lead and the negative pole (9) of the compensation lead on the V-shaped plastic connector (7).
3. The composite probe for measuring and controlling TOS of molten steel according to claim 1, characterized in that: the oxygen measuring element (2) comprises a zirconia electrolyte tube.
4. The composite probe for measuring and controlling TOS of molten steel according to claim 1, characterized in that: the molten steel sampler (3) is provided with a molten steel inlet.
5. The composite probe for measuring and controlling TOS of molten steel according to claim 1, characterized in that: the steel pipe (4) is provided with steel pipe outward salient points (5) for enhancing the structure and strength of the precoated sand, and the steel pipe (4) is internally provided with steel pipe inward salient points (17) for being connected with the oxygen anode of the oxygen measurement element (2).
6. The composite probe for measuring and controlling TOS of molten steel according to claim 1, characterized in that: and the V-shaped plastic connector (7) is provided with a plastic socket positioning rod (15) for improving strength, and the steel pipe (4) is provided with a plastic socket clamping hole (16) for limiting the V-shaped plastic connector (7).
7. The composite probe for measuring and controlling TOS of molten steel according to claim 1, characterized in that: the steel pipe coating machine is characterized by further comprising a paper pipe (18), wherein a conical precoated sand protective body with the length of 80 mm is solidified on the steel pipe (4), and the exposed 45 mm position of the steel pipe (4) is coated with glue and then inserted into the paper pipe (18).
8. The composite probe for measuring and controlling TOS of molten steel according to claim 1, characterized in that: and protective paper caps (10) and protective steel caps (11) are arranged outside the temperature measuring element (1) and the oxygen measuring element (2).
9. The composite probe for measuring and controlling TOS of molten steel according to claim 1, characterized in that: and high-temperature quick-drying cement (12) is poured on the contact interfaces of the temperature measuring element (1) and the oxygen measuring element (2) and the molten steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121670011.2U CN215811308U (en) | 2021-07-22 | 2021-07-22 | Molten steel TOS measurement and control composite probe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121670011.2U CN215811308U (en) | 2021-07-22 | 2021-07-22 | Molten steel TOS measurement and control composite probe |
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| Publication Number | Publication Date |
|---|---|
| CN215811308U true CN215811308U (en) | 2022-02-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121670011.2U Active CN215811308U (en) | 2021-07-22 | 2021-07-22 | Molten steel TOS measurement and control composite probe |
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| CN (1) | CN215811308U (en) |
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2021
- 2021-07-22 CN CN202121670011.2U patent/CN215811308U/en active Active
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