A fixed oxygen probe device applied to a converter

Abstract

The application relates to an oxygen-determining probe device applied to a converter, and belongs to the field of converter molten steel detection devices. The device comprises, from outside to inside, a shell, a protection pipe layer and an oxygen-detecting intelligent sensor. The oxygen-detecting intelligent sensor comprises an oxygen-determining half cell, a temperature-measuring thermocouple, a protection cap, resin sand and a plug-in part. The resin sand is arranged in the protection pipe layer. The end portions of the oxygen-determining half cell and the temperature-measuring thermocouple penetrate through the resin sand and project out of the shell. The protection cap is connected with the resin sand and wraps the end portions of the oxygen-determining half cell and the temperature-measuring thermocouple. The plug-in part is connected with the signal output ends of the oxygen-determining half cell and the temperature-measuring thermocouple through wires. The shell is provided with a sleeve on the lateral side. The sleeve is provided with a shell clamping unit for fixing the shell and a power unit for pushing the shell to move vertically. The application has the technical effects of compact structure and convenient maintenance.

Description

Technical Field

[0001] This application relates to the technical field of converter steel detection devices, and in particular to a constant oxygen probe device for converters. Background Technology

[0002] Currently, accurate measurement of oxygen content in molten steel is a crucial step in the endpoint control process during converter steelmaking, directly impacting steel quality and smelting efficiency. As an intelligent sensor for acquiring oxygen activity in molten steel, the accuracy and reliability of the oxygen determination probe are paramount. Traditional oxygen determination probes are often deployed manually or using simple mechanical methods, which suffer from inaccurate timing of deployment, inconsistent insertion depth, and susceptibility to interference, resulting in large fluctuations and insufficient representativeness in the measurement data. Furthermore, the harsh environment of high temperature and dust within the converter places higher demands on the probe's protective structure and automated operation. Existing technologies lack an integrated device capable of precise, automatic, and rapid deployment and retrieval, making it difficult to ensure that the probe contacts the molten steel at the optimal time and completes stable measurements.

[0003] Patent (202221759788.0) discloses a dispensing device for a high-temperature continuous oxygen and carbon measuring probe, comprising a left frame vertical beam, a right frame vertical beam, a converter, an oxygen and carbon measuring probe, and a signal transmission line. Horizontal beams are mounted on the left and right frame vertical beams, with a vertical cylinder at one end of each horizontal beam. A horizontal support plate is mounted on the vertical cylinder, and a dispensing and fixing component is mounted on the horizontal support plate. The signal transmission line is equipped with...

[0004] The device has a finite position block; although the above patent solves the shortcomings of manual oxygen probe delivery, the above device occupies a large area, has a complicated operation process, and is difficult to maintain.

[0005] Regarding the aforementioned technologies, the inventors believe that there is a drawback in the existing oxygen probes, which are difficult to deploy. Summary of the Invention

[0006] To address the aforementioned technical problems, this application provides a constant oxygen probe device for use in converters.

[0007] This application provides a constant oxygen probe device for use in a converter, which adopts the following technical solution:

[0008] An oxygen detection probe device for a converter includes, from the outside to the inside, an outer shell, a protective tube layer, and an intelligent oxygen detection sensor. The intelligent oxygen detection sensor includes an oxygen-determining half-cell, a temperature-measuring thermocouple, a protective cap, resin sand, and a connector. The resin sand is disposed within the protective tube layer. The ends of the oxygen-determining half-cell and the temperature-measuring thermocouple both penetrate the resin sand and protrude from the outer shell. The protective cap is connected to the resin sand and covers the ends of the oxygen-determining half-cell and the temperature-measuring thermocouple. The connector is connected to the signal output terminals of the oxygen-determining half-cell and the temperature-measuring thermocouple via wires. A sleeve is provided around the periphery of the outer shell. The sleeve is provided with a clamping unit for fixing the outer shell and a power unit for pushing the outer shell to move vertically.

[0009] By adopting the above technical solution, the clamping unit on the sleeve stably clamps the outer shell, avoiding the dangers and inconveniences of manual operation; the power unit provides the thrust required to quickly, powerfully and linearly inject the outer shell and its internal oxygen detection intelligent sensor into the molten steel; by closely integrating the power source with the outer shell and its internal oxygen detection intelligent sensor, the operation process is simplified and the accuracy and consistency of injection are improved.

[0010] Preferably, the outer shell is provided with a retaining ring; the clamping unit includes multiple sets of clamping rods evenly distributed along the circumference of the outer shell; the middle parts of the multiple sets of clamping rods are rotatably connected to the inner wall of the sleeve; the tops of the multiple sets of clamping rods are respectively used to abut against the bottom wall of the retaining ring; the bottom ends of the multiple sets of clamping rods are respectively provided with locking blocks; after the outer shell moves down, the multiple locking blocks are respectively used to abut against the bottom wall of the retaining ring.

[0011] Preferably, a first elastic element is provided between the sidewall of the top of the plurality of clamping rods and the sleeve; the first elastic element is used to provide a force on the top of the clamping rods near the outer shell.

[0012] By adopting the above technical solution and setting the first elastic element, it is ensured that the outer shell is always subjected to a constant and controllable clamping force during the standby and preparation stages, thus avoiding the loosening and slippage of the outer shell due to insufficient clamping force or damage to the outer shell due to excessive clamping force.

[0013] Preferably, the top of the clamping rod is provided with a limiting member; both the locking block and the sidewall of the limiting member have an arc surface that fits against the sidewall of the outer shell.

[0014] By adopting the above technical solution, the arc surface on the side wall of the clamping block and the limiting component fits perfectly with the side wall of the cylindrical shell, greatly increasing the contact area between the clamping point and the probe shell; ensuring that the clamping force is evenly distributed on the shell, thereby effectively preventing the probe from radially shaking or circumferentially rotating during the clamping process, keeping the center position of the shell in the sleeve fixed, achieving the positioning effect, and ensuring that the shell and the oxygen detection intelligent sensor inside are straight and accurate into the molten steel.

[0015] Preferably, the power unit includes a pressure box, a nozzle, and a receiving plate; the pressure box is disposed at the bottom of the sleeve; the receiving plate is disposed at the top of the outer shell; the nozzle is disposed at the top of the sleeve; one end of the nozzle communicates with the pressure box, and the other end abuts against the top wall of the receiving plate.

[0016] By adopting the above technical solution, the high-pressure steam in the pressurized tank is instantly applied to the receiving plate through the injection head, which can generate a huge and rapid downward thrust on the probe shell. This ensures that the oxygen detection intelligent sensor inside the shell and its interior can be rapidly launched, effectively penetrating the slag layer at the converter mouth and quickly reaching the predetermined depth of molten steel for measurement, greatly improving the success rate of deployment and measurement accuracy. Furthermore, it makes full use of the high-temperature environment on the surface of molten steel, saving energy. Compared with electric or hydraulic systems, the power unit itself is not afraid of high temperatures, and the pressurized tank can be designed to be high-temperature resistant, which can better adapt to the high-temperature radiation environment near the converter and avoid the problem of electronic or hydraulic components being prone to failure at high temperatures. The pressurized tank is a box filled with pressurized gas, with a simple structure and easy maintenance.

[0017] Preferably, the card block has a guide arc surface on the side away from the outer shell; multiple air passages are provided on the top wall of the pressurization box; the multiple air passages are evenly distributed along the circumference of the sleeve; displacement members are slidably arranged vertically inside the air passages; the tops of the multiple displacement members abut against the multiple guide arc surfaces respectively.

[0018] By adopting the above technical solution, when the pressure chamber is located on the upper surface of the molten steel, the expanding air pressure inside the pressure chamber can push the displacement component slidably installed in the air passage on the top wall of the pressure chamber. This displacement component presses the clamping block towards the outer shell, and the top of the clamping rod overcomes the thrust of the first elastic component, releasing the outer shell and achieving the effect of automatic release of the outer shell. After the outer shell moves down a certain distance, the clamping block abuts against the bottom wall of the clamping ring, limiting the movement distance of the outer shell. This ensures that the oxygen detection intelligent sensor detects the same depth each time when measuring molten steel, greatly improving the detection accuracy.

[0019] Preferably, the top surface of the displacement member is a spherical surface; the plurality of spherical surfaces abut against the plurality of guide arc surfaces.

[0020] Preferably, the power unit further includes multiple power rods; a power cavity is formed inside the sleeve; the power cavity is connected to the pressure box through an opening and closing unit; multiple drive cavities are formed vertically inside the sleeve; the multiple power rods are respectively slidably arranged vertically inside the drive cavities; the top ends of the multiple power rods respectively penetrate the top wall of the drive cavity and abut against the bottom wall of the receiving plate.

[0021] By adopting the above technical solution, by setting up a power chamber and multiple power rods, and by setting up an opening and closing unit to control the connection and opening and closing state of the power chamber and the pressure box, when the outer shell needs to be moved upward, the continuously increasing air pressure in the pressure box is filled into the power chamber, and the power rods push the outer shell upward and separate it from the molten steel.

[0022] Preferably, the opening and closing unit includes a first opening and closing seat, a second opening and closing seat, and an opening and closing rod; the first opening and closing seat and the second opening and closing seat are respectively disposed on the sleeve; the first opening and closing seat has a first air hole; the second opening and closing seat has a second air hole; the first air hole communicates with the pressurization box and the power chamber; the second air hole communicates with the pressurization box and the injection head; the opening and closing rod is slidably disposed on the sleeve along the radial direction of the outer shell; one end of the opening and closing rod abuts against the side wall of the top of any of the clamping rods, and the other end passes through the first opening and closing seat and the second opening and closing seat in sequence; the opening and closing rod has a first through hole and a second through hole; the first through hole and the second through hole are respectively used to connect the first air hole and the second air hole.

[0023] By adopting the above technical solution, the power chamber and the injection head are connected separately by setting the first and second opening and closing seats, so that the upward and downward movement of the outer shell can be operated independently. By setting the opening and closing rod to be linked with the clamping rod, the mechanical action of the clamping rod is directly linked with the release of steam power. After the clamping rod rotates, the direction of the air pressure can be automatically adjusted, realizing the automated switching of the outer shell from entering the molten steel to being pulled out of the molten steel. This reduces manpower, makes full use of the temperature of the molten steel, and saves energy.

[0024] Preferably, a second elastic element is provided between the end of the opening / closing rod away from the housing and the second opening / closing seat; the second elastic element is used to provide the force for the opening / closing rod to abut against the clamping rod.

[0025] In summary, this application includes at least one of the following beneficial technical effects:

[0026] 1. The clamping unit on the sleeve stably clamps the outer shell, avoiding the dangers and inconveniences of manual operation; the power unit provides the thrust required to quickly, powerfully and linearly inject the outer shell and its internal oxygen detection intelligent sensor into the molten steel; the close integration of the power source with the outer shell and its internal oxygen detection intelligent sensor simplifies the operation process and improves the accuracy and consistency of injection.

[0027] 2. By applying high-pressure steam from the pressurized chamber to the receiving plate instantly through the injection head, a huge and rapid downward thrust is generated on the probe housing. This ensures that the oxygen detection intelligent sensor inside the housing can be rapidly launched, effectively penetrating the slag layer at the converter mouth and quickly reaching the predetermined depth of molten steel for measurement, greatly improving the success rate and measurement accuracy. Furthermore, it fully utilizes the high-temperature environment of the molten steel surface, saving energy. Compared with electric or hydraulic systems, the power unit itself is not afraid of high temperatures, and the pressurized chamber can be designed to withstand high temperatures, better adapting to the high-temperature radiation environment near the converter and avoiding the problem of electronic or hydraulic components easily failing at high temperatures. The pressurized chamber is a box filled with pressurized gas, with a simple structure and easy maintenance.

[0028] 3. By setting up a first and a second opening and closing seat to connect the power chamber and the injection head separately, the upward and downward movement of the outer shell can be operated independently. By setting the opening and closing rod to be linked with the clamping rod, the mechanical action of the clamping rod is directly linked to the release of steam power. After the clamping rod rotates, the direction of the air pressure can be automatically adjusted, realizing the automated switching of the outer shell from entering the molten steel to being pulled out of the molten steel. This reduces manpower, makes full use of the temperature of the molten steel, and saves energy. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of an oxygen probe device used in converters.

[0030] Figure 2 yes Figure 1 A magnified view of part A in the image.

[0031] Figure 3 yes Figure 1 A magnified view of part B in the image.

[0032] Explanation of reference numerals in the attached figures:

[0033] 1. Outer shell; 11. Protective tube layer; 12. Constant oxygen half-cell; 13. Temperature measuring thermocouple; 14. Protective cap; 15. Resin sand; 16. Connector; 17. Snap ring;

[0034] 2. Sleeve; 21. Power chamber; 22. Drive chamber;

[0035] 3. Clamping rod; 31. Locking block; 32. Limiting component;

[0036] 4. Power unit; 41. Pressure box; 411. Air passage; 412. Displacement component; 42. Injector head; 43. Receiving plate; 44. Power rod;

[0037] 5. First elastic element;

[0038] 6. Opening and closing unit; 61. First opening and closing seat; 611. First air hole; 62. Second opening and closing seat; 621. Second air hole; 63. Opening and closing rod; 631. First through hole; 632. Second through hole;

[0039] 7. Trachea;

[0040] 8. Second elastic element. Detailed Implementation

[0041] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0042] This application discloses an oxygen probe device for use in a converter. (Refer to...) Figure 1-3 The system comprises, from the outside to the inside, an outer shell 1, a protective tube layer 11, and an oxygen detection intelligent sensor; the outer shell 1 is made of 45 forged steel; the oxygen detection intelligent sensor includes an oxygen-fixing half-cell 12, a temperature-measuring thermocouple 13, a protective cap 14, resin sand 15, and a connector 16; the resin sand 15 is disposed inside the protective tube layer 11; the ends of the oxygen-fixing half-cell 12 and the temperature-measuring thermocouple 13 both penetrate the resin sand 15 and protrude from the outer shell 1; the protective cap 14 is connected to the resin sand 15 and wraps around the ends of the oxygen-fixing half-cell 12 and the temperature-measuring thermocouple 13; the connector 16 is connected to the signal output terminals of the oxygen-fixing half-cell 12 and the temperature-measuring thermocouple 13 via wires; a sleeve 2 is provided around the outer shell 1; the sleeve 2 is provided with a clamping unit for fixing the outer shell 1 and a power unit 4 for pushing the outer shell 1 to move vertically; in the initial state, the protective cap 14 at the bottom of the outer shell 1 is located inside the sleeve 2 to prevent the protective cap 14 from prematurely contacting the molten steel during the reaction of the power unit 4.

[0043] Reference Figure 1 The clamping unit includes multiple sets of clamping rods 3; at least two sets of clamping rods 3 are provided; the middle parts of the multiple sets of clamping rods 3 are rotatably connected to the inner wall of the sleeve 2; a retaining ring 17 is provided on the outer shell 1; the tops of the multiple sets of clamping rods 3 are respectively used to abut against the bottom wall of the retaining ring 17; the bottom ends of the multiple sets of clamping rods 3 are respectively provided with retaining blocks 31; after the outer shell 1 moves down, multiple retaining blocks 31 are respectively used to abut against the bottom wall of the retaining ring 17; a first elastic element 5 is provided between the side wall of the top of the multiple clamping rods 3 and the sleeve 2; the first elastic element 5 is a spring; the first elastic element 5 is used to provide a force for the top of the clamping rods 3 to approach the outer shell 1, so as to ensure that the top of the clamping rods 3 can stably abut against the bottom wall of the retaining ring 17 in the initial state.

[0044] Specifically, in order to facilitate the stable clamping and fixing of the outer shell 1 by the clamping rod 3, a limiting member 32 is provided at the top of the clamping rod 3. Both the locking block 31 and the side wall of the limiting member 32 have arc surfaces that fit against the side wall of the outer shell 1.

[0045] Reference Figures 1 to 3The power unit 4 includes a pressure box 41, a nozzle 42, a receiving plate 43, and multiple power rods 44. The pressure box 41 is annular and coaxially disposed at the bottom of the sleeve 2. After the outer shell 1 moves down, it passes through the gap in the middle of the pressure box 41. The receiving plate 43 is disposed at the top of the outer shell 1. The nozzle 42 is disposed at the top of the sleeve 2. One end of the nozzle 42 is connected to the pressure box 41, and the other end abuts against the top wall of the receiving plate 43. To ensure the sealing between the nozzle 42 and the receiving plate 43 in the initial state, a sealing groove is opened at the top of the receiving plate 43, and the bottom end of the nozzle 42 is inserted into the sealing groove.

[0046] The side of the clamping block 31 away from the outer shell 1 has a guide arc surface; multiple air passages 411 are provided on the top wall of the pressure box 41; the multiple air passages 411 are evenly distributed along the circumference of the sleeve 2; a displacement member 412 is slidably arranged vertically inside the air passage 411; the top surface of the displacement member 412 is spherical; the spherical surface at the top of the multiple displacement members 412 abuts against the multiple guide arc surfaces; after the displacement member 412 moves upward, it can push the clamping block 31 towards the outer shell 1, thereby making the bottom end of the clamping rod 3 close to the outer shell 1 and the top end away from the outer shell 1. After the outer shell 1 loses the restriction of the clamping rod 3, it slides downward and penetrates into the molten steel.

[0047] The power unit 4 also includes multiple power rods 44; a power cavity 21 is provided inside the sleeve 2; the power cavity 21 is connected to the pressure box 41 through the opening and closing unit 6; multiple drive cavities 22 are provided vertically inside the sleeve 2; multiple power rods 44 are respectively slidably arranged in the drive cavity 22; when the oxygen detection intelligent sensor moves down to the lowest detection position of the molten steel, the top ends of the multiple power rods 44 respectively penetrate through the top wall of the drive cavity 22 and abut against the bottom wall of the receiving plate 43.

[0048] Reference Figure 3The opening and closing unit 6 includes a first opening and closing seat 61, a second opening and closing seat 62, and an opening and closing rod 63; the first opening and closing seat 61 and the second opening and closing seat 62 are respectively disposed on the sleeve 2; the first opening and closing seat 61 has a first air hole 611; the second opening and closing seat 62 has a second air hole 621; the first air hole 611 communicates with the pressurization box 41 and the power chamber 21; the second air hole 621 communicates with the pressurization box 41 and the injection head 42; the opening and closing rod 63 is slidably disposed on the sleeve 2 along the radial direction of the outer shell 1; one end of the opening and closing rod 63 abuts against the side wall at the top of any clamping rod 3, and the other end passes through the first opening and closing seat 61 and the second opening and closing seat 62 in sequence; the opening and closing rod 63 has a first through hole 631 and a second through hole 632; the first through hole 631 and the second through hole 632 are used to connect the first vent 611 and the second vent 621, respectively. In the initial state, the second vent 621 is connected to the second through hole 632, and the opening and closing rod 63 closes the first vent 611. When the clamping rod 3 rotates, the top of the clamping rod 3 pushes the opening and closing rod 63 to slide, so that the first vent 611 is connected to the first through hole 631, and the opening and closing rod 63 closes the second vent 621. A second elastic element 5 is provided between the end of the opening and closing rod 63 away from the outer shell 1 and the second opening and closing seat 62. The second elastic element 5 is used to provide the force for the opening and closing rod 63 to abut against the clamping rod 3, and to press the top of the opening and closing rod 63 and the clamping rod 3 against the outer shell 1, so as to ensure that the opening and closing rod 63 stably closes the first vent 611 in the initial state.

[0049] It should be noted that since the time from when the outer shell 1 is inserted into the molten steel to when it is pulled out of the molten steel is about 4 to 6 seconds, the air pressure conversion time of the opening and closing unit 6 is about 2 to 3 seconds. The first opening and closing seat 61 is connected to the pressurizing box 41 and the power chamber 21, and the second opening and closing seat 62 is connected to the pressurizing box 41 and the injection head 42 by air pipes 7.

[0050] The working principle of the oxygen probe device applied to a converter in this application is as follows:

[0051] In the initial state, the multiple sets of clamping rods 3 inside the sleeve 2, under the action of the first elastic element 5, have their tops tightened inward, abutting against the bottom wall of the retaining ring 17 on the outer shell 1; this clamping force firmly fixes the outer shell 1 in the initial high position inside the sleeve 2; at this time, under the action of its own second elastic element 5, the end of the opening and closing rod 63 is tightly pressed against the top side wall of the clamping rod 3; the first through hole 631 on the opening and closing rod 63 is not aligned with the first air hole 611, cutting off the passage from the pressurization box 41 to the power chamber 21; the second through hole 632 is aligned with the second air hole 621, establishing the passage from the pressurization box 41 to the injection head 42. The protective cap 14 at the bottom of the outer shell 1 is completely located inside the sleeve 2, preventing damage from premature contact with air or splashed steel slag while waiting for measurement.

[0052] The sleeve can be mounted on the robotic arm; the robotic arm then places the pressure tank on the upper surface of the molten steel.

[0053] Pressurized gas is pre-introduced into the pressurized chamber 41, so that the force exerted by the pressurized gas on the displacement member 412 against the locking block 31 is less than or equal to the force exerted by the first elastic member 5 on the top of the clamping rod 3. When the pressurized chamber 41 is located on the upper surface of the molten steel, the high temperature of the molten steel will heat the gas in the pressurized chamber 41 and cause the gas to expand. Since the passage to the power chamber 21 is closed, while the passage to the injection head 42 is open, the high-pressure gas first enters the injection head 42 through the second air hole 621. However, since the outlet of the injection head 42 is tightly sealed by the sealing groove on the receiving plate 43 at this time, the gas pressure cannot be released from here. Therefore, the gas pressure is instead applied to the displacement member 412 through the air passage 411 on the top wall of the pressurized chamber 41.

[0054] Multiple displacement components 412 slide upward under gas pressure; the spherical surface at the top of the displacement component 412 contacts the guide arc surface on the bottom locking block 31 of the clamping rod 3, generating a force that pushes the locking block 31 inward; according to the lever principle, this forces the top of the clamping rod 3 to open outward, thereby disengaging from the bottom wall of the retaining ring 17.

[0055] Once the top of the clamping rod 3 releases the restriction on the retaining ring 17, the lifted outer shell 1, under its own weight and the air pressure stored at the injection head 42, immediately slides rapidly downward along the sleeve 2, causing the protective cap 14 at its bottom and the sensor to quickly insert into the molten steel in the converter.

[0056] When the top of the clamping rod 3 rotates outward, it squeezes and pushes the opening and closing rod 63 outward. This movement causes the hole position on the opening and closing rod 63 to switch, aligning the first through hole 631 with the first air hole 611, opening the passage from the pressurization box 41 to the power chamber 21. After the rod body of the opening and closing rod 63 moves, it closes the second air hole 621, cutting off the passage of high-pressure gas to the nozzle 42. Then the high-pressure gas quickly changes its flow direction and rushes into the power chamber 21. At this time, the outer shell 1 falls to the lowest point, allowing the sensor to reach the predetermined measurement depth. The oxygen half-cell 12 and the temperature measuring thermocouple 13 start to work, and the measurement data is transmitted to the external analysis system through the wires and connectors 16. The high-pressure gas fills the cavity of the power chamber 21, and the gas pressure in the power chamber 21 acts on the bottom ends of multiple power rods 44, pushing them to slide upward. The top of the power rods 44 abuts against the bottom wall of the receiving plate 43, thereby generating an upward thrust. This thrust overcomes the gravity of the outer shell 1 and pushes the entire outer shell 1 back to the initial position.

[0057] The outward movement of the top of the clamping rod 3 reduces the pressure on the opening and closing rod 63. Under the action of its spring, the opening and closing rod 63 rebounds inward, cutting off the first air hole 611 leading to the power chamber 21 again and opening the second air hole 621 leading to the injection head 42. The residual high-pressure gas in the power chamber 21 is discharged, and the power rod 44 falls back under the action of gravity. The device is fully restored to the initial standby state, and the clamping rod 3 re-clamps the retaining ring 17, ready for the next measurement.

[0058] By applying the temperature of molten steel, combined with the power unit 4 and clamping rod 3, the upward and downward movement of the outer shell 1 is controlled, automatically and reliably executing a series of actions in sequence, including releasing the outer shell 1 and the oxygen detection smart sensor inside, inserting molten steel, and lifting and resetting. The entire process requires no additional electric or hydraulic power, has a compact structure, and responds quickly, making it very suitable for the harsh environment of high temperature and dust in the converter workshop.

[0059] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A constant oxygen probe device for use in a converter, characterized in that: The system includes, from the outside to the inside, an outer shell (1), a protective tube layer (11), and an oxygen detection smart sensor; the oxygen detection smart sensor includes an oxygen-fixing half-cell (12), a temperature-measuring thermocouple (13), a protective cap (14), resin sand (15), and a connector (16); the resin sand (15) is disposed inside the protective tube layer (11); the ends of the oxygen-fixing half-cell (12) and the temperature-measuring thermocouple (13) both penetrate the resin sand (15) and protrude from the outer shell (16). The protective cap (14) is connected to the resin sand (15) and wraps the oxygen-fixing half-cell (12) and the temperature-measuring thermocouple (13); the plug (16) is connected to the signal output terminals of the oxygen-fixing half-cell (12) and the temperature-measuring thermocouple (13) through wires; the outer shell (1) is provided with a sleeve (2) on its periphery; the sleeve (2) is provided with a clamping unit for fixing the outer shell (1) and a power unit (4) for pushing the outer shell (1) to move vertically; The outer shell (1) is provided with a retaining ring (17); the clamping unit includes multiple sets of clamping rods (3) evenly distributed around the circumference of the outer shell (1); the middle parts of the multiple sets of clamping rods (3) are rotatably connected to the inner wall of the sleeve (2); the tops of the multiple sets of clamping rods (3) are respectively used to abut against the bottom wall of the retaining ring (17); the bottom ends of the multiple sets of clamping rods (3) are respectively provided with locking blocks (31); after the outer shell (1) moves down, the multiple locking blocks (31) are respectively used to abut against the bottom wall of the retaining ring (17); The power unit (4) includes a pressure box (41), a nozzle (42), and a receiving plate (43); the pressure box (41) is located at the bottom of the sleeve (2); the receiving plate (43) is located at the top of the outer shell (1); the nozzle (42) is located at the top of the sleeve (2); one end of the nozzle (42) is connected to the pressure box (41), and the other end abuts against the top wall of the receiving plate (43); The card block (31) has a guide arc surface on the side away from the outer shell (1); the top wall of the pressurization box (41) is provided with multiple air passages (411); the multiple air passages (411) are evenly distributed along the circumference of the sleeve (2); displacement members (412) are slidably arranged vertically inside the air passages (411); the tops of the multiple displacement members (412) respectively abut against the multiple guide arc surfaces.

2. The oxygen probe device for a converter according to claim 1, characterized in that: A first elastic element (5) is provided between the side wall of the top of the plurality of clamping rods (3) and the sleeve (2); the first elastic element (5) is used to provide a force for the top of the clamping rod (3) to approach the outer shell (1).

3. The oxygen probe device for a converter according to claim 1, characterized in that: The top of the clamping rod (3) is provided with a limiting member (32); the side walls of the locking block (31) and the limiting member (32) both have arc surfaces that fit against the side walls of the outer shell (1).

4. The oxygen probe device for a converter according to claim 1, characterized in that: The top surface of the displacement member (412) is a spherical surface; multiple spherical surfaces abut against multiple guide arc surfaces.

5. The oxygen probe device for a converter according to claim 1, characterized in that: The power unit (4) also includes multiple power rods (44); a power cavity (21) is provided inside the sleeve (2); the power cavity (21) is connected to the pressure box (41) through an opening and closing unit (6); multiple drive cavities (22) are provided vertically inside the sleeve (2); multiple power rods (44) are respectively slidably arranged in the drive cavity (22) along the vertical direction; the top ends of multiple power rods (44) respectively penetrate through the top wall of the drive cavity (22) and abut against the bottom wall of the receiving plate (43).

6. The oxygen probe device for a converter according to claim 5, characterized in that: The opening and closing unit (6) includes a first opening and closing seat (61), a second opening and closing seat (62), and an opening and closing rod (63); the first opening and closing seat (61) and the second opening and closing seat (62) are respectively disposed on the sleeve (2); the first opening and closing seat (61) has a first air hole (611); the second opening and closing seat (62) has a second air hole (621); the first air hole (611) communicates with the pressurization box (41) and the power chamber (21); the second air hole (621) communicates with the pressurization box (41) and the injection head ( 42) Connecting; the opening and closing rod (63) is slidably disposed on the sleeve (2) along the radial direction of the outer shell (1); one end of the opening and closing rod (63) abuts against the side wall at the top of any of the clamping rods (3), and the other end passes through the first opening and closing seat (61) and the second opening and closing seat (62) in sequence; the opening and closing rod (63) is provided with a first through hole (631) and a second through hole (632); the first through hole (631) and the second through hole (632) are respectively used to connect the first air hole (611) and the second air hole (621).

7. The oxygen probe device for a converter according to claim 6, characterized in that: A second elastic element (8) is provided between the end of the opening / closing rod (63) away from the outer shell (1) and the second opening / closing seat (62); the second elastic element (8) is used to provide the force for the opening / closing rod (63) to abut against the clamping rod (3).

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