Medium-frequency electric furnace for measuring tempering temperature of roller on line

Abstract

The invention discloses a medium-frequency electric furnace for measuring the tempering temperature of a roller on line, and relates to the technical field of roller tempering equipment. The medium-frequency electric furnace comprises a furnace body, a lifting cylinder body is fixed to the outer wall of the furnace body, and a connecting frame is fixed to the output end of the lifting cylinder body; the end cover is fixed on the connecting frame, is coaxial with the furnace body and is positioned above the furnace body; the temperature measuring assembly is mounted in the end cover; the cooling bin is fixed in the furnace body, and an induction coil is fixed in the cooling bin; the adjusting assembly is fixed in the furnace body and is in sliding connection with the end cover; the three adjusting motors are all fixed to the outer wall of the furnace body, and winding discs are fixed to output shafts of the adjusting motors; wherein a roller is placed in the furnace body, and the roller is coaxially placed in the furnace body by adopting hoisting equipment.

Description

Technical Field

[0001] The invention relates to the technical field of roll tempering equipment, in particular to a medium frequency electric furnace for online measuring the roll tempering temperature. Background Art

[0002] The medium frequency electric furnace adopts the medium frequency electromagnetic induction heating principle, which rectifies the three-phase industrial frequency AC into DC, and then converts the DC into an adjustable medium frequency current. These medium frequency currents pass through capacitors and induction coils to generate high-density magnetic lines of force, which cut the metal material contained in the induction coil, thereby generating large eddy currents in the metal material. The eddy currents flow in the metal's own resistance, generating heat and heating the metal.

[0003] The existing medium frequency electric furnace cannot timely feedback the temperature of each area on the roller when tempering the roller, and the outer diameter of the roller body is large during tempering heating, resulting in the roller body temperature being higher than the rest of the body during heating, causing a temperature difference, affecting the tempering effect, and the local temperature in the electric furnace cannot be controlled during tempering.

[0004] In view of the above problems, the present invention provides a medium frequency electric furnace for online measuring the tempering temperature of a rolling mill roll to solve the above problems. Summary of the invention

[0005] To achieve the above object, the present invention provides the following technical solution: a medium frequency electric furnace for online measuring the tempering temperature of a roll, comprising:

[0006] A furnace body, an outer wall of which is fixed with a lifting cylinder, and an output end of the lifting cylinder is fixed with a connecting frame;

[0007] An end cover is fixed on the connecting frame, arranged coaxially with the furnace body, and located above the furnace body;

[0008] A temperature measuring component is installed in the end cover;

[0009] A cooling chamber is fixed inside the furnace body and an induction coil is fixed inside the cooling chamber;

[0010] An adjusting assembly is fixed in the furnace body and is slidably connected to the end cover;

[0011] The regulating motors are configured as three and are all fixed to the outer wall of the furnace body, and the output shafts of the regulating motors are fixed with winding disks;

[0012] Wherein, a rolling roller is placed in the furnace body, and the rolling roller is coaxially placed in the furnace body by using a lifting device.

[0013] Further, preferably, the temperature measuring component comprises:

[0014] A temperature measuring motor is fixed on the upper end surface of the end cover;

[0015] A rotating disk, rotatably disposed on the lower end surface of the end cover and connected to the output shaft of the temperature measuring motor;

[0016] A connecting rod, fixed on the side wall of the rotating disk;

[0017] An adjusting column, threadedly connected to the connecting rod;

[0018] The insulation columns are configured in three pieces and are threadedly connected to the adjustment column, and the three insulation columns are threadedly connected to each other;

[0019] The temperature sensor is fixed on the side of the temperature insulation column close to the roller.

[0020] Further, preferably, the adjustment component comprises:

[0021] The air inlet pipe is configured as a plurality of pipes, all of which are fixed in the furnace body and slidably connected to the end cover, and the air inlet pipe is connected to an external air inlet device through a pipeline;

[0022] The cooling components are configured into three groups, all of which are slidably arranged on the plurality of intake pipes.

[0023] Further, preferably, each group of the cooling components comprises:

[0024] The sliding rings are configured in plurality and are all slidably arranged on the plurality of the air inlet pipes, and two sliding rings are arranged on each of the air inlet pipes;

[0025] A return spring, sleeved on the air inlet pipe and located between the two sliding rings;

[0026] The air intake ring is configured in two, fixed on the plurality of sliding rings, and symmetrically distributed at the upper and lower ends of the return spring;

[0027] The rotating pillars are configured as a plurality of rotating pillars and are circumferentially arranged on a side of the intake ring away from the intake pipe;

[0028] The spray heads are configured in multiple numbers, fixedly connected to the air intake ring, and correspond one-to-one to the multiple rotating columns.

[0029] Further, preferably, the plurality of air jet heads are all oriented in the radial direction of the air inlet ring, and the ejection direction is toward the rolling roller.

[0030] Further, preferably, adjustment wires are wound around the plurality of rotating columns, and the adjustment wires are wound around the rotating columns on the two air intake rings in an "S" shape, and one end of the adjustment wires extends out of the furnace body and is connected to the winding disk.

[0031] Further, preferably, an air outlet is opened at a position corresponding to the air inlet pipe and the sliding ring, an adjustment port is opened at a position corresponding to the air outlet, and an air inlet is opened at a position corresponding to the air inlet ring and the adjustment port.

[0032] Further, preferably, the regulating port and the air inlet are of the same size, the length of the air outlet is at least three times the length of the regulating port, and the air outlet is always located inside the sliding ring.

[0033] Compared with the prior art, the present invention provides a medium frequency electric furnace for online measuring the tempering temperature of a rolling mill roll, which has the following beneficial effects:

[0034] In the present invention, the temperature of different parts of the roller diameter can be measured separately through the temperature measuring component, so as to improve the accuracy of temperature measurement, and when measuring the temperature, the temperature sensor can be rotated around the roller through the temperature measuring motor, so as to determine whether the roller is located at the axial position. When one side of the roller is closer to the induction coil, the temperature of the side closer to the induction coil is high, so that it can be adjusted in time through the external lifting equipment to avoid affecting the tempering effect. When the local temperature of the roller is too high, the position with too high temperature can be cooled by the cooling component, so that the roller as a whole is kept within the qualified temperature difference range, which improves the tempering effect, and when the heating is completed, it can be quickly cooled by the cooling component, so as to improve the efficiency of tempering. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 The schematic diagram of the overall structure of a medium frequency electric furnace for online measuring the tempering temperature of a roll is shown in FIG.

[0036] Figure 2 It is a schematic diagram of the structure of a temperature measuring component of a medium frequency electric furnace for online measuring the tempering temperature of a rolling mill roll;

[0037] Figure 3 It is a schematic diagram of the structure of an adjustment component of a medium frequency electric furnace for online measuring the tempering temperature of a rolling mill roll;

[0038] Figure 4 It is a partial structural schematic diagram of a regulating component of a medium frequency electric furnace for online measuring the tempering temperature of a roll;

[0039] In the figure: 1. furnace body; 2. lifting cylinder body; 3. connecting frame; 4. end cover; 5. temperature measuring component; 6. cooling chamber; 7. induction coil; 8. adjustment component; 9. adjustment motor; 10. rolling roller; 51. rotating disk; 52. connecting rod; 53. adjustment column; 54. insulation column; 55. temperature sensor; 81. air inlet pipe; 82. sliding ring; 83. reset spring; 84. air inlet ring; 85. rotating column; 86. nozzle; 87. adjustment line; 811. air outlet; 821. adjustment port; 841. air inlet. DETAILED DESCRIPTION

[0040] Reference Figure 1-Figure 4 The present invention provides a technical solution: a medium frequency electric furnace for online measuring the tempering temperature of a roll, comprising:

[0041] A furnace body 1, an outer wall of which is fixed with a lifting cylinder body 2, and an output end of the lifting cylinder body 2 is fixed with a connecting frame 3;

[0042] The end cover 4 is fixed on the connecting frame 3, arranged coaxially with the furnace body 1, and located above the furnace body 1;

[0043] A temperature measuring component 5 is installed in the end cover 4;

[0044] A cooling chamber 6 is fixed inside the furnace body 1 and an induction coil 7 is fixed inside the cooling chamber 6;

[0045] An adjusting assembly 8 is fixed in the furnace body 1 and is slidably connected to the end cover 4;

[0046] The regulating motors 9 are configured as three and are all fixed to the outer wall of the furnace body 1 , and the output shafts of the regulating motors 9 are fixed with winding disks;

[0047] A rolling roller 10 is placed in the furnace body 1 , and the rolling roller 10 is coaxially placed in the furnace body 1 using a lifting device.

[0048] It should be noted that when the roller 10 is placed by means of a lifting device, the end cover 4 is lifted by the lifting cylinder 2 to be separated from the adjustment assembly 8 , thereby facilitating the placement of the roller 10 .

[0049] In this embodiment, the temperature measuring component 5 includes:

[0050] A temperature measuring motor is fixed on the upper end surface of the end cover 4;

[0051] A rotating disk 51 is rotatably disposed on the lower end surface of the end cover 4 and is connected to the output shaft of the temperature measuring motor;

[0052] A connecting rod 52, fixed on the side wall of the rotating disk 51;

[0053] An adjusting column 53, threadedly connected to the connecting rod 52;

[0054] The insulation columns 54 are configured in three pieces and are threadedly connected to the adjustment column 53, and the three insulation columns 54 are all threadedly connected to each other;

[0055] The temperature sensor 55 is fixed on a side of the temperature insulating column 54 close to the roller 10 .

[0056] That is to say, when measuring the temperature, the temperature sensor 55 can be rotated around the roller 10 by the temperature measuring motor, so as to determine whether the roller 10 is located at the axial position. When one side of the roller 10 is closer to the induction coil 7, the temperature of the side closer to the induction coil 7 is high, so that timely adjustments can be made through the lifting equipment to avoid affecting the tempering effect.

[0057] As a preferred embodiment, the adjustment component 8 includes:

[0058] The air inlet pipe 81 is configured as a plurality of pipes, all of which are fixed in the furnace body 1 and slidably connected to the end cover 4. The air inlet pipe 81 is connected to an external air inlet device through a pipeline;

[0059] The cooling components are configured into three groups, all of which are slidably disposed on the plurality of intake pipes 81 .

[0060] It should be noted that the gas introduced into the air inlet pipe 81 is air at room temperature to avoid damage to the roller 10 due to too low temperature.

[0061] In this embodiment, each group of cooling components includes:

[0062] The sliding rings 82 are configured as a plurality of sliding rings 82, each of which is slidably disposed on the plurality of the air inlet pipes 81, and two sliding rings 82 are disposed on each of the air inlet pipes 81;

[0063] A return spring 83 is sleeved on the air inlet pipe 81 and located between the two sliding rings 82;

[0064] The air intake rings 84 are configured as two, fixed on the plurality of sliding rings 82, and symmetrically distributed at the upper and lower ends of the return spring 83;

[0065] The rotating pillars 85 are configured as a plurality of rotating pillars 85 and are circumferentially arranged on a side of the intake ring 84 away from the intake pipe 81 ;

[0066] The injection heads 86 are configured in plurality, fixedly connected to the intake ring 84 , and correspond one-to-one to the plurality of rotating posts 85 .

[0067] That is to say, after the roller 10 is placed in the furnace body 1 , the distance between the air inlet rings 84 in the same group of cooling components can be adjusted by adjusting the motor 9 , thereby performing a local cooling operation on the roller 10 .

[0068] As a preferred embodiment, the plurality of air jet heads 86 are all oriented in the radial direction of the air inlet ring 84 , and the ejection direction is toward the rolling roller 10 .

[0069] As a preferred embodiment, the plurality of rotating columns 85 are wound with adjustment wires 87, and the adjustment wires 87 are wound around the rotating columns 85 on the two air inlet rings 84 in an "S" shape, and one end of the adjustment wire 87 extends out of the furnace body 1 and is connected to the winding disk.

[0070] Among them, when adjusting the spacing between the air intake rings 84 in the same group of cooling components, the adjustment line 87 is retracted and released by adjusting the motor 9, thereby completing the spacing adjustment between the air intake rings 84. It should be noted that when the adjustment line 87 is contracted, the sliding ring 82 compresses the return spring 83. When the adjustment line 87 is released, the sliding ring 82 is moved away by the return spring 83, thereby completing the adjustment.

[0071] As a preferred embodiment, the air inlet pipe 81 is provided with an air outlet 811 at a position corresponding to the sliding ring 82 , the sliding ring 82 is provided with an adjustment port 821 at a position corresponding to the air outlet 811 , and the air inlet ring 84 is provided with an air inlet 841 at a position corresponding to the adjustment port 821 .

[0072] As a preferred embodiment, the regulating port 821 and the air inlet 841 are of the same size, the length of the air outlet 811 is at least three times the length of the regulating port 821 , and the air outlet 811 is always located in the sliding ring 82 .

[0073] That is to say, when local cooling is required, the sliding ring 82 slides to make the air outlet 811 correspond to the regulating port 821, so that the gas can be ejected from the nozzle 86. For the other positions that do not require cooling, the sliding ring 82 slides to make the regulating port 821 fit with the outer wall of the air inlet pipe 81, thereby preventing gas from entering. The air intake volume can be controlled by the degree of overlap between the air outlet 811 and the regulating port 821, so that the positions with different temperatures can be locally cooled separately, so that the overall temperature of the roller 10 is consistent with the position with the lowest temperature, thereby improving the tempering effect.

[0074] Specifically, first, the end cover 4 is opened by the lifting cylinder 2, and then the roller 10 is placed in the furnace body 1 by the lifting equipment, and then the end cover 4 is closed, and the temperature of the parts of the roller 10 with different diameters is measured separately by the temperature measuring component 5, so as to improve the accuracy of the temperature measurement, and when measuring the temperature, the temperature sensor 55 is rotated around the roller 10 by the temperature measuring motor to determine whether the roller 10 is located at the axial position. When one side of the roller 10 is closer to the induction coil, the temperature of the side closer to the induction coil 7 is high, so that it can be adjusted in time by the lifting equipment to avoid affecting the tempering effect. When the local temperature of the roller 10 is too high, the temperature-lowering position can be cooled by the cooling component at this time, so that the roller 10 as a whole is kept within the qualified temperature difference range, which improves the tempering effect, and when the heating is completed, it can be quickly cooled by the cooling component, so as to improve the efficiency of tempering. Finally, after the tempering is completed, the roller 10 is taken out by the lifting equipment.

[0075] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A medium frequency electric furnace for online measurement of roll tempering temperature, characterized in that: include: A furnace body (1) has a lifting cylinder body (2) fixed on its outer wall, and a connecting frame (3) fixed on the output end of the lifting cylinder body (2); An end cover (4) is fixed on the connecting frame (3), is coaxially arranged with the furnace body (1), and is located above the furnace body (1); A temperature measuring component (5) is installed in the end cover (4); A cooling chamber (6) is fixed inside the furnace body (1) and has an induction coil (7) fixed inside; An adjustment assembly (8) is fixed in the furnace body (1) and is slidably connected to the end cover (4); The regulating motors (9) are configured as three and are all fixed to the outer wall of the furnace body (1), and the output shafts of the regulating motors (9) are fixed with winding disks; A rolling roller (10) is placed in the furnace body (1), and the rolling roller (10) is coaxially placed in the furnace body (1) using a lifting device.

2. The medium frequency electric furnace for online measuring the tempering temperature of a roll according to claim 1, characterized in that: The temperature measuring component (5) comprises: A temperature measuring motor, fixed on the upper end surface of the end cover (4); A rotating disk (51) rotatably disposed on the lower end surface of the end cover (4) and connected to the output shaft of the temperature measuring motor; A connecting rod (52) fixed on the side wall of the rotating disk (51); An adjusting column (53) threadedly connected to the connecting rod (52); The thermal insulation columns (54) are configured in three pieces and are threadedly connected to the adjustment column (53), and the three thermal insulation columns (54) are all threadedly connected to each other; The temperature sensor (55) is fixed on a side of the temperature-insulating column (54) close to the rolling roller (10).

3. The medium frequency electric furnace for online measuring the tempering temperature of a roll according to claim 1, characterized in that: The adjustment component (8) comprises: The air intake pipe (81) is configured as a plurality of air intake pipes, all of which are fixed in the furnace body (1) and are slidably connected to the end cover (4); the air intake pipe (81) is connected to an external air intake device through a pipeline; The cooling components are configured into three groups, each of which is slidably arranged on the plurality of air inlet pipes (81).

4. The medium frequency electric furnace for online measuring the tempering temperature of a roll according to claim 3, characterized in that: Each group of cooling components includes: The sliding rings (82) are configured in plurality and are all slidably disposed on the plurality of air intake pipes (81), and two sliding rings (82) are disposed on each of the air intake pipes (81); A return spring (83) is sleeved on the air inlet pipe (81) and is located between the two sliding rings (82); The air intake ring (84) is configured as two, fixed on the plurality of sliding rings (82), and symmetrically distributed at the upper and lower ends of the return spring (83); The rotating columns (85) are configured as a plurality of rotating columns and are circumferentially arranged on a side of the intake ring (84) away from the intake pipe (81); The spray heads (86) are configured in plurality, fixedly connected to the air intake ring (84), and correspond one-to-one to the plurality of rotating columns (85).

5. The medium frequency electric furnace for online measuring the tempering temperature of a roll according to claim 4, characterized in that: The plurality of spray heads (86) are all oriented in the radial direction of the air inlet ring (84), and the spraying direction is toward the rolling roller (10).

6. The medium frequency electric furnace for online measuring the tempering temperature of a roll according to claim 5, characterized in that: An adjustment wire (87) is wound around each of the plurality of rotating columns (85), and the adjustment wire (87) is wound around the rotating columns (85) on the two air inlet rings (84) in an "S" shape. One end of the adjustment wire (87) extends out of the furnace body (1) and is connected to a winding disk.

7. The medium frequency electric furnace for online measuring the tempering temperature of a roll according to claim 5, characterized in that: An air outlet (811) is provided at a position corresponding to the air inlet pipe (81) and the sliding ring (82); an adjustment port (821) is provided at a position corresponding to the air outlet (811); and an air inlet (841) is provided at a position corresponding to the air inlet ring (84) and the adjustment port (821).

8. The medium frequency electric furnace for online measuring the tempering temperature of a roll according to claim 7, characterized in that: The regulating port (821) and the air inlet (841) are of the same size, the length of the air outlet (811) is at least three times the length of the regulating port (821), and the air outlet (811) is always located inside the sliding ring (82).

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