Heat treatment device and process for casting inner cylinder of steam turbine

Abstract

The present invention relates to the field of metal heat treatment technology, specifically to a heat treatment device and process for steam turbine inner cylinder casting, including a quenching box, a feeding assembly and a unloading assembly, wherein a feeding assembly is provided inside the quenching box, and the feeding assembly is used for feeding the steam turbine inner cylinder, and a unloading assembly is provided inside the quenching box, and the unloading assembly is used for unloading the steam turbine inner cylinder. The tensioning claws of the feeding assembly are automatically tensioned on the inner wall of the steam turbine inner cylinder, the steam turbine inner cylinder is fixed, and the steam turbine inner cylinder is carried to rotate clockwise, and a plurality of flame nozzles are used to spray high-temperature flames for burning, so that the steam turbine inner cylinder is heated rapidly, and at the same time, the meshing action of the planetary gear and the sun gear causes the steam turbine inner cylinder to rotate, which is beneficial to ensure the uniformity of the heating of the steam turbine inner cylinder and improve the quenching effect, and then the high-temperature steam turbine inner cylinder is automatically immersed in the quenching liquid, which has high automation and improves the heat treatment efficiency of the steam turbine inner cylinder.

Description

Technical Field

[0001] The invention relates to the technical field of metal heat treatment, in particular to a heat treatment device and process for steam turbine inner cylinder casting. Background Art

[0002] The steam turbine cylinder is the outer shell of the steam turbine. The steam turbine is one of the three main equipments in a thermal power plant. Its rotor and cylinder have very high processing precision. The main components work in a high temperature and high pressure environment. Therefore, the quality of the steam turbine cylinder is very important. Therefore, metal heat treatment is required during processing to improve the strength of the steam turbine cylinder.

[0003] According to a Chinese patent with application publication number CN117512286A, a metal surface heat treatment device is disclosed, which drives four arms through a disc frame to switch workstations by rotation, so as to realize the simultaneous heat treatment, cooling and drying of metal rings with different structures, thereby facilitating the improvement of the heat treatment efficiency of the metal rings. Secondly, as the trapezoidal block slides and resets, the arc-shaped clamping plate will radially retract to release the clamping state of the processed metal rings, thereby facilitating the rapid replacement of the processed metal rings by the staff. However, the above-mentioned metal surface heat treatment device still relies on manual loading machines for unloading, has a low level of automation, and has a high cost of manpower. Summary of the invention

[0004] In order to solve the above technical problems existing in the prior art, the present invention provides a heat treatment device and process for casting an inner cylinder of a steam turbine.

[0005] The present invention provides the following technical solution: a heat treatment device for steam turbine inner cylinder casting, comprising a quenching box, a feeding assembly and a blanking assembly, wherein the quenching box is provided with a feeding assembly inside, and the feeding assembly is used for feeding the steam turbine inner cylinder, and the quenching box is provided with a blanking assembly inside, and the blanking assembly is used for blanking the steam turbine inner cylinder, and a plurality of mounting holes are opened at the upper right part of the outer wall of the quenching box, and flame nozzles are fixedly installed inside the mounting holes;

[0006] The feeding assembly includes a central axis rotatably mounted between the front wall and the rear wall of the quenching box, the outer wall of the central axis is fixedly mounted with two three-dimensional turntables symmetrically distributed front and back, a side surface close to the front and rear three-dimensional turntables is fixedly mounted with a plurality of bearing seats distributed at equal angles, a push rod is rotatably mounted inside the bearing seat, four corner claws are slidably mounted on the outer wall of the push rod, the four corner ends of the four corner claws are provided with a first hinge groove, the interior of the first hinge groove is hinged with a tensioning claw, a limited slider is fixedly mounted on the end of the push rod, four flexible steel wires are fixedly mounted on the side of the limit slider away from the push rod, one end of the flexible steel wire away from the limit slider is fixedly connected to the surface of the tensioning claw, a moving magnetic block is fixedly mounted on the side of the four corner claws away from the limit slider, a planetary gear is fixedly mounted on the end of the push rod away from the limit slider, a sun gear is fixedly mounted on the front wall and the rear wall of the quenching box, and a first electromagnetic ring and a second electromagnetic ring are fixedly mounted on the front wall and the rear wall of the quenching box.

[0007] As a preferred solution of the present invention, the sun gear is meshed with the planetary gears, and two key blocks are fixedly installed on the outer wall of the push rod, and the two key blocks are symmetrically distributed about the center of the push rod. The inner wall of the four-corner claw is provided with two key slots, and the specifications of the two key slots are compatible with the specifications of the two key blocks, and the inner wall of the key slot is slidably connected to the outer wall of the key block.

[0008] As a preferred solution of the present invention, the first electromagnetic ring and the second electromagnetic ring together form a circular magnet structure, and the first electromagnetic ring and the second electromagnetic ring are located on the periphery of the sun gear, the magnetism of the first electromagnetic ring is the same as that of the moving magnetic block, the magnetism of the second electromagnetic ring is opposite to that of the moving magnetic block, and the first driven pulley is fixedly installed at the front end of the center shaft.

[0009] As a preferred solution of the present invention, a feeding port is opened at the left end of the top of the quenching box, and a feeding platform is fixedly installed on the left top wall of the quenching box, the feeding platform is located at the bottom of the feeding port, and a support bar is fixedly installed on the right end of the bottom of the feeding platform, and the bottom of the support bar is movably installed on the middle part of the outer wall of the central axis through a bearing, and the front and rear of the feeding platform are fixedly provided with correcting baffles, the top of the correcting baffle is fixedly connected to the top wall of the quenching box, and a limit block is fixedly installed on the right end of the feeding platform, the limit block is arranged in an arc shape, and the center of the arc of the limit block is concentric with the central axis.

[0010] As a preferred solution of the present invention, the unloading assembly includes a sliding seat fixedly installed between the front wall and the rear wall of the quenching box, the sliding seat is located at the bottom of the loading platform, and two sliding rods distributed front and back are slidably installed inside the sliding seat, the right end of the sliding rod is set to be bent downward at a right angle, and the bottoms of the two sliding rods are jointly fixed with a connecting block, and a receiving plate is fixedly installed on the left end of the connecting block, and the receiving plate is inclined 15 degrees to the left, and the receiving plate is located at the left end of the inside of the quenching box, and a receiving platform is fixedly installed between the front wall and the rear wall of the quenching box, and the receiving platform is located at the left end of the receiving plate, and the position of the receiving platform corresponds to the position of the unloading port of the quenching box.

[0011] As a preferred solution of the present invention, a shift block is commonly installed on the left ends of the two sliding rods, a hinge seat is fixedly installed in the middle of the right side surface of the shift block, a second hinge groove is opened at the bottom of the hinge seat, a connecting rod is hinged inside the second hinge groove, a crankshaft is rotatably installed between the front wall and the rear wall of the quenching box, the crankshaft is located at the bottom of the sliding seat, the end of the connecting rod away from the second hinge groove is hinged to the crankshaft, and a second driven pulley is fixedly installed at the front end of the crankshaft.

[0012] As a preferred solution of the present invention, a water tank is fixedly installed at the lower right part of the quenching box, the interior of the water tank is connected to the interior of the quenching box, a filling pipe is fixedly installed at the upper left part of the front of the water tank, the interior of the filling pipe is connected to the interior of the water tank, a gland is screwed on the end of the filling pipe, and a plurality of fixed grooves equidistantly distributed front and back are opened through the top of the water tank;

[0013] A cooling assembly is provided on the top of the water tank, and the cooling assembly includes a protective cover fixedly installed on the top of the water tank. Heat sinks are fixedly plugged into the interior of the fixed tank. Two front and rear cooling fans are installed on the top of the water tank through a fixed bracket. The cooling fans are located on the top of the heat sink. A temperature monitoring sensor is fixedly installed on the bottom wall of the water tank.

[0014] As a preferred solution of the present invention, an equipment frame is fixedly installed on the bottom of the quenching box, a reduction motor is fixedly installed on the left end of the equipment frame, a driving pulley is fixedly installed on the output shaft of the reduction motor, and at least one power belt is commonly sleeved on the periphery of the driving pulley, the first driven pulley and the second driven pulley.

[0015] As a preferred solution of the present invention, a material unloading conveyor is fixedly provided at the left end of the quenching box.

[0016] A treatment process using the above-mentioned heat treatment device for casting the inner cylinder of the steam turbine comprises the following steps:

[0017] S1. Place the inner cylinder of the steam turbine on the top of the loading platform through the opening. The inner cylinder of the steam turbine rolls to the right along the top slope of the loading platform and finally stops at the rightmost position of the loading platform under the limiting action of the limiting block.

[0018] S2. The output shaft of the reduction motor drives the driving pulley to rotate clockwise at a low speed. The rotation of the driving pulley drives the first driven pulley to rotate through the transmission action of the power belt, so that the feeding assembly rotates clockwise, driving the inner cylinder of the steam turbine located at the rightmost end of the loading platform to rotate together. After the inner cylinder of the steam turbine is rotated axially along the central axis to the area of ​​multiple flame nozzles, it is burned by high-temperature flames sprayed by multiple flame nozzles, so that the inner cylinder of the steam turbine is quickly heated up;

[0019] S3. After the inner cylinder of the steam turbine rotates around the axial direction of the central axis to the lower position inside the quenching box, the inner cylinder of the steam turbine in a high-temperature state is immersed in the quenching liquid. During this period, the temperature of the quenching box and the quenching liquid inside the water tank is monitored in real time by a temperature monitoring sensor. When the temperature of the quenching liquid is higher than the use requirement, two cooling fans are started to blow air to the top of multiple heat sinks, and the quenching liquid is cooled through the multiple heat sinks, so that the quenching liquid is always maintained within the required temperature range;

[0020] S4. Finally, the feeding assembly places the quenched inner cylinder of the steam turbine on the top of the receiving plate of the unloading assembly, and the unloading assembly conveys the quenched inner cylinder of the steam turbine to the conveyor belt of the unloading conveyor, and the unloading conveyor conveys the inner cylinder to the next processing station.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. In the present invention, the tensioning claws of the feeding assembly are automatically tensioned on the inner wall of the inner cylinder of the turbine to fix the inner cylinder of the turbine and carry the inner cylinder of the turbine to rotate clockwise. A plurality of flame nozzles are used to spray high-temperature flames for burning, so that the inner cylinder of the turbine is quickly heated up. At the same time, the meshing action of the planetary gear and the sun gear causes the inner cylinder of the turbine to rotate, which is beneficial to ensure the uniformity of the heating of the inner cylinder of the turbine and improve the quenching effect. Subsequently, the inner cylinder of the turbine in a high-temperature state is automatically immersed in the quenching liquid, which has a high degree of automation and improves the heat treatment efficiency of the inner cylinder of the turbine.

[0023] 2. In the present invention, the inner cylinder of the steam turbine after quenching is placed on the top of the receiving plate of the unloading assembly through the feeding assembly, and the inner cylinder of the steam turbine after quenching is transported to the conveyor belt of the unloading conveyor through the unloading assembly, and is transported to the next processing station by the unloading conveyor, so that unloading is automatically completed, saving manpower costs.

[0024] 3. In the present invention, after quenching, when the inner cylinder of the turbine is fished out of the quenching liquid and moves upward, the slide bar just slides to the right, that is, drives the connecting block and the receiving plate to move to the right, ensuring that the receiving plate does not interfere with the upward movement of the inner cylinder of the turbine. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the left front structure of the heat treatment device of the present invention;

[0026] Figure 2 It is a schematic diagram of the right front structure of the heat treatment device of the present invention;

[0027] Figure 3 It is a schematic diagram of the side section structure of the quenching box in the present invention;

[0028] Figure 4 It is a schematic diagram of the half-section structure of the quenching box in the present invention;

[0029] Figure 5 It is a structural schematic diagram of the feeding component and the unloading component in the present invention;

[0030] Figure 6 It is a schematic diagram of the structure of the four-corner claw in the present invention;

[0031] Figure 7 It is a structural schematic diagram of the keyway in the present invention;

[0032] Figure 8 It is a schematic diagram of the structure of the cooling assembly in the present invention;

[0033] Fig. 9 It is a detailed structural schematic diagram of the blanking component in the present invention;

[0034] Fig.10 For the present invention Figure 8 Schematic diagram of the enlarged structure of part A.

[0035] In the figure: 100, quenching box; 101, loading port; 102, deviation correction baffle; 103, mounting hole; 104, water tank; 105, fixing slot; 106, receiving platform; 107, filling pipe; 200, feeding assembly; 201, central axis; 202, three-dimensional turntable; 203, bearing seat; 204, push rod; 205, four-corner claw; 206, first hinge slot; 207, tensioning claw; 208, limit slider; 209, flexible steel wire; 2010, moving magnetic block; 2011, planetary gear; 2012, sun gear; 2013, first electromagnetic ring; 2014, second electromagnetic ring; 2015, key block; 2016, key slot; 2017 , the first driven pulley; 2018, the loading platform; 2019, the support bar; 2020, the limit block; 300, the unloading assembly; 301, the sliding seat; 302, the sliding rod; 303, the connecting block; 304, the receiving plate; 305, the shifting block; 306, the hinge seat; 307, the second hinge groove; 308, the connecting rod; 3010, the crankshaft; 3011, the second driven pulley; 400, the cooling assembly; 401, the protective cover; 402, the heat sink; 403, the cooling fan; 500, the unloading conveyor; 600, the flame nozzle; 700, the reduction motor; 701, the driving pulley; 702, the power belt; 800, the temperature monitoring sensor; 900, the equipment rack. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] See also Figure 1-Figure 10 The technical solution provided by the present invention specifically includes the following embodiments:

[0038] Embodiment 1: A heat treatment device for casting a steam turbine inner cylinder comprises a quenching box 100, a feeding assembly 200 and a blanking assembly 300. The quenching box 100 is provided with a feeding assembly 200 for feeding the steam turbine inner cylinder. The quenching box 100 is provided with a blanking assembly 300 for blanking the steam turbine inner cylinder. A plurality of mounting holes 103 are provided at the upper right portion of the outer wall of the quenching box 100. Flame spray heads 600 are fixedly installed in the mounting holes 103.

[0039] The feeding assembly 200 includes a central shaft 201 rotatably mounted between the front wall and the rear wall of the quenching box 100, and two three-dimensional turntables 202 symmetrically distributed in the front and rear are fixedly mounted on the outer wall of the central shaft 201, and a plurality of bearing seats 203 distributed at equal angles are fixedly mounted on the side surfaces close to the front and rear three-dimensional turntables 202, and a push rod 204 is rotatably mounted inside the bearing seat 203, and four corner claws 205 are slidably mounted on the outer wall of the push rod 204, and the four corner ends of the four corner claws 205 are provided with first hinge grooves 206, and the first The inside of the hinge groove 206 is hinged with a tensioning claw 207, a limited slider 208 is fixedly installed at the end of the push rod 204, and four flexible steel wires 209 are fixedly installed on the side of the limited slider 208 away from the push rod 204, and the end of the flexible steel wire 209 away from the limited slider 208 is fixedly connected to the surface of the tensioning claw 207, and the side of the four-corner claw 205 away from the limited slider 208 is fixedly installed with a moving magnetic block 2010, and the end of the push rod 204 away from the limited slider 208 is fixedly installed with a planetary gear 211, and the quenching box 1 The front wall and the rear wall of the quenching box 100 are fixedly mounted with a sun gear 2012, and the front wall and the rear wall of the quenching box 100 are fixedly mounted with a first electromagnetic ring 2013 and a second electromagnetic ring 2014. The first electromagnetic ring 2013 and the second electromagnetic ring 2014 together form a circular magnet structure, and the first electromagnetic ring 2013 and the second electromagnetic ring 2014 are located on the periphery of the sun gear 2012. The magnetism of the first electromagnetic ring 2013 is the same as that of the moving magnetic block 2010, and the magnetism of the second electromagnetic ring 2014 is the same as that of the moving magnetic block 2010. 10 has opposite magnetic properties, the sun gear 2012 is meshed with the planetary gear 2011, two key blocks 2015 are fixedly installed on the outer wall of the push rod 204, the two key blocks 2015 are symmetrically distributed about the center of the push rod 204, the inner wall of the four-corner claw 205 is provided with two key grooves 2016, the specifications of the two key grooves 2016 are adapted to the specifications of the two key blocks 2015, and the inner wall of the key groove 2016 is slidably connected with the outer wall of the key block 2015, and the front end of the central shaft 201 is fixedly installed with a first driven pulley 2017;

[0040] A loading port 101 is provided at the left end of the top of the quenching box 100, and a loading platform 2018 is fixedly installed on the left top wall of the quenching box 100. The loading platform 2018 is located at the bottom of the loading port 101, and a support bar 2019 is fixedly installed at the right end of the bottom of the loading platform 2018. The bottom of the support bar 2019 is movably installed on the middle part of the outer wall of the central axis 201 through a bearing. A deviation correction baffle 102 is fixedly provided at the front and rear of the loading platform 2018, and the top of the deviation correction baffle 102 is fixedly connected to the top wall of the quenching box 100. A limit block 2020 is fixedly installed at the right end of the loading platform 2018. The limit block 2020 is arranged in an arc shape, and the arc center of the limit block 2020 is concentric with the central axis 201.

[0041] The bottom of the quenching box 100 is fixedly installed with an equipment frame 900, the left end of the equipment frame 900 is fixedly installed with a reduction motor 700, the output shaft of the reduction motor 700 is fixedly installed with a driving pulley 701, and the driving pulley 701 and the first driven pulley 2017 are sleeved with at least one power belt 702;

[0042] Specifically, the inner cylinder of the steam turbine is placed on the top of the loading platform 2018 through the opened loading port 101, and the inner cylinder of the steam turbine rolls to the right along the top inclined surface of the loading port 101, and finally stops at the rightmost end position of the loading platform 2018 under the limiting action of the limit block 2020. In addition, since the front and rear two deviation correction baffles 102 are set to seal the front and rear of the loading platform 2018, the inner cylinder of the steam turbine can be prevented from rolling off the front or rear of the loading platform 2018. At the same time, the output shaft of the reduction motor 700 drives the active pulley 701 to rotate clockwise at a low speed. The rotation of the active pulley 701 drives the first driven pulley 2017 to rotate through the transmission action of the power belt 702, and the rotation of the first driven pulley 2017 drives the front driven pulley 2017 to rotate through the connection action of the center shaft 201. The two rear three-dimensional turntables 202 and the multiple bearing seats 203 rotate together in a clockwise low-speed around the central axis 201, and the rotation of the bearing seat 203 drives the push rod 204, the four-corner claws 205, the tensioning claws 207, the moving magnetic block 2010 and the planetary gear 211 to rotate together. When the front and rear moving magnetic blocks 2010 rotate upward from between the front and rear second electromagnetic rings 2014, the magnetic force of the second electromagnetic ring 2014 is opposite to that of the moving magnetic block 2010, so that the front and rear moving magnetic blocks 2010 move away from each other under the magnetic attraction of the front and rear second electromagnetic rings 2014. The two moving magnetic blocks 2010 move away from each other and further drive the two four-corner claws 205 connected thereto to move along the front and rear push rods 204. 04 outer wall moves together, and drives the tensioning claw 207 connected to the four-corner claw 205 to move together, that is, the front and rear sides of the tensioning claw 207 in the front and rear directions are opened, and as the central shaft 201 continues to rotate, the moving magnetic block 2010 located between the front and rear second electromagnetic rings 2014 moves to between the front and rear first electromagnetic rings 2013. Since the magnetism of the first electromagnetic ring 2013 is the same as that of the moving magnetic block 2010, the two generate a repulsive force, thereby pushing the front and rear opened moving magnetic blocks 2010 toward the middle. During the movement of the front and rear moving magnetic blocks 2010 toward the middle, the front and rear four-corner claws 205 and the tensioning claw 207 connected to the four-corner claw 205 are driven toward the middle, so that the front and rear four The corner claw 205 drives the tensioning claw 207 to just insert into the interior of a turbine inner cylinder located at the rightmost end of the loading platform 2018. As the front and rear four corner claws 205 and the tensioning claw 207 connected to the four corner claws 205 move toward the middle, the flexible steel wire 209 is gradually straightened, thereby applying tension to the end of the tensioning claw 207, so that the four tensioning claws 207 rotate and expand toward the periphery along the hinge positions of the four first hinge grooves 206, thereby abutting against the inner wall of the turbine inner cylinder, achieving an automatic tensioning effect on the turbine inner cylinder, thereby carrying the tensioned turbine inner cylinder to rotate clockwise along the axial direction of the central axis 201. When the tensioned turbine inner cylinder rotates axially along the central axis 201 to the area of ​​multiple flame nozzles 600,The high-temperature flames sprayed by multiple flame nozzles 600 are burned, so that the temperature of the inner cylinder of the steam turbine rises rapidly. During this period, due to the meshing action of the planetary gear 2011 and the sun gear 2012, the push rod 204 rotates along the central axis 201 axially, and the push rod 204 also rotates. The push rod 204 rotates by the torque limiting action of the key block 2015 and the keyway 2016, further driving the four-corner claw 205 and the tensioning claw 207 to rotate together, so that the inner cylinder of the steam turbine tensioned on the outer periphery of the tensioning claw 207 rotates together, ensuring that the surface of the inner cylinder of the steam turbine can be burned by the high-temperature flame sprayed by the flame nozzle 600, which is conducive to ensuring the uniformity of the heating of the inner cylinder of the steam turbine and improving the quenching effect.

[0043] Embodiment 2: A water tank 104 is fixedly installed on the lower right part of the quenching box 100, and the interior of the water tank 104 is connected with the interior of the quenching box 100. A filling pipe 107 is fixedly installed on the upper left part of the front of the water tank 104, and the interior of the filling pipe 107 is connected with the interior of the water tank 104. The end of the filling pipe 107 is screwed with a gland. The top of the water tank 104 is penetrated by a plurality of fixed grooves 105 distributed equidistantly in the front and rear. A cooling component 400 is provided on the top of the water tank 104. The cooling component 400 includes a protective cover 401 fixedly installed on the top of the water tank 104. Heat sinks 402 are fixedly plugged in the interior of the fixed grooves 105. Two front and rear cooling fans 403 are installed on the top of the water tank 104 through a fixed bracket. The cooling fan 403 is located on the top of the heat sink 402. A temperature monitoring sensor 800 is fixedly installed on the bottom wall of the water tank 104.

[0044] Specifically, in this embodiment, after the inner cylinder of the steam turbine rotates axially around the central axis 201 to the lower position inside the quenching box 100, the inner cylinder of the steam turbine in a high-temperature state is immersed in the quenching liquid. During this period, the temperature of the quenching liquid inside the quenching box 100 and the water tank 104 is monitored in real time by the temperature monitoring sensor 800. When the temperature of the quenching liquid is higher than the use requirement, the two cooling fans 403 are started to blow air to the top of the multiple heat sinks 402, and the quenching liquid is supplied through the multiple heat sinks 402 to cool the quenching liquid, so that the quenching liquid is always maintained within the required temperature range, thereby avoiding uneven quality of the inner cylinder of the steam turbine after quenching and improving the consistency of product quality after quenching of the inner cylinder of the steam turbine.

[0045] Embodiment 3: The material unloading component 300 includes a sliding seat 301 fixedly installed between the front wall and the rear wall of the quenching box 100, the sliding seat 301 is located at the bottom of the loading platform 2018, and two sliding rods 302 distributed front and back are slidably installed inside the sliding seat 301, the right end of the sliding rod 302 is set to be bent downward at a right angle, and the bottoms of the two sliding rods 302 are jointly fixedly installed with a connecting block 303, and a material receiving plate 304 is fixedly installed on the left end of the connecting block 303, and the material receiving plate 304 is inclined to the left at 15 degrees, and the material receiving plate 304 is located at the left end of the inside of the quenching box 100, and a material receiving platform 106 is fixedly installed between the front wall and the rear wall of the quenching box 100, and the material receiving platform 106 is located at the left end of the material receiving plate 304, and the position of the material receiving platform 106 corresponds to the position of the unloading port of the quenching box 100;

[0046] A shift block 305 is commonly installed at the left ends of the two slide bars 302, and a hinge seat 306 is fixedly installed in the middle of the right side surface of the shift block 305. A second hinge groove 307 is provided at the bottom of the hinge seat 306, and a connecting rod 308 is hinged inside the second hinge groove 307. A crankshaft 3010 is rotatably installed between the front wall and the rear wall of the quenching box 100. The crankshaft 3010 is located at the bottom of the sliding seat 301, and one end of the connecting rod 308 away from the second hinge groove 307 is hinged to the crankshaft 3010. A second driven pulley 3011 is fixedly installed at the front end of the crankshaft 3010, and the power belt 702 is also sleeved on the outer periphery of the second driven pulley 3011.

[0047] A material unloading conveyor 500 is fixedly provided at the left end of the quenching box 100;

[0048] Specifically, in this embodiment, after quenching, the inner cylinder of the steam turbine continues to rotate around the axial direction of the central axis 201, and the inner cylinder of the steam turbine is lifted out of the quenching liquid. During this period, the operation of the power belt 702 also drives the second driven pulley 3011 to rotate, and further drives the crankshaft 3010 to rotate with the second driven pulley 3011, and generates a left-right reciprocating swing effect on the articulated seat 306 through the connection of the connecting rod 308. The left-right reciprocating swing of the articulated seat 306 further drives the two sliding rods 302 to swing together through the shifting block 305. Since the sliding rod 302 is slidably installed in the inner part of the sliding seat 301, the sliding rod 302 is rotated by the sliding rod 302. Therefore, the sliding of the sliding seat 301 can be more stable, and the reciprocating swing of the sliding rod 302 further drives the connecting block 303 to swing together with the receiving plate 304. It should be noted that the specifications of the active pulley 701, the first driven pulley 2017 and the second driven pulley 3011 of the device are set by adaptability. Therefore, when the inner cylinder of the steam turbine is fished out of the quenching liquid after quenching, the sliding rod 302 just slides to the right during the upward movement, that is, it drives the connecting block 303 and the receiving plate 304 to move to the right, ensuring that the receiving plate 304 does not interfere with the steam turbine. The inner cylinder moves up. When the inner cylinder of the steam turbine moves up to the top of the receiving plate 304, the slide bar 302 just drives the connecting block 303 and the receiving plate 304 to move left. When the receiving plate 304 moves to the leftmost position, the moving magnetic block 2010 carrying the quenched inner cylinder of the steam turbine just enters between the front and rear second electromagnetic rings 2014. Since the magnetic properties of the second electromagnetic rings 2014 are opposite to those of the moving magnetic block 2010, the magnetic attraction between the two attracts the front and rear moving magnetic blocks 2010 to move away from each other. The front and rear moving magnetic blocks 2010 move away from each other and further drive the moving magnetic blocks connected to them. The two connected four-corner claws 205 move together with the tensioning claws 207 connected to the four-corner claws 205, and the force on the flexible steel wire 209 is released, ending the pulling force on the end of the tensioning claws 207, making it convenient for the front and rear tensioning claws 207 to extend from the inside of the turbine inner cylinder. After the tensioning claws 207 are extended, the turbine inner cylinder falls to the top of the receiving plate 304 due to gravity, and rolls to the top of the receiving platform 106 at the top of the receiving plate 304 set 15 degrees to the left, and then rolls to the conveyor belt of the unloading conveyor 500, and is transported to the next processing station by the unloading conveyor 500.

[0049] A processing technology of a heat treatment device for casting a steam turbine inner cylinder includes the following steps:

[0050] S1. Place the inner cylinder of the steam turbine on the top of the loading platform 2018 through the opening of the loading port 101. The inner cylinder of the steam turbine rolls to the right along the top slope of the loading platform 2018, and finally stops at the rightmost position of the loading platform 2018 under the limiting action of the limiting block 2020;

[0051] S2. The output shaft of the reduction motor 700 drives the driving pulley 701 to rotate clockwise at a low speed. The driving pulley 701 rotates through the transmission effect of the power belt 702 to drive the first driven pulley 2017 to rotate, so that the feeding assembly 200 rotates clockwise, driving the inner cylinder of the steam turbine located at the rightmost end of the loading platform 2018 to rotate together. After the inner cylinder of the steam turbine is axially rotated along the central axis 201 to the area of ​​multiple flame nozzles 600, it is burned by high-temperature flames sprayed by multiple flame nozzles 600, so that the inner cylinder of the steam turbine is quickly heated up;

[0052] S3, when the inner cylinder of the steam turbine rotates around the axial direction of the central axis 201 to the lower position inside the quenching box 100, the inner cylinder of the steam turbine in a high-temperature state is immersed in the quenching liquid. During this period, the temperature of the quenching liquid in the quenching box 100 and the water tank 104 is monitored in real time by the temperature monitoring sensor 800. When the temperature of the quenching liquid is higher than the use requirement, the two cooling fans 403 are started to blow air to the top of the multiple heat sinks 402, and the quenching liquid is cooled through the multiple heat sinks 402, so that the quenching liquid is always maintained within the required temperature range;

[0053] S4. Finally, the feeding component 200 places the quenched inner cylinder of the steam turbine on the top of the receiving plate 304 of the unloading component 300, and conveys the quenched inner cylinder of the steam turbine to the conveyor belt of the unloading conveyor 500 through the unloading component 300, and is conveyed to the next processing station by the unloading conveyor 500.

[0054] When the heat treatment device for casting the inner cylinder of a steam turbine of the present invention is working, the inner cylinder of the steam turbine is placed on the top of the loading platform 2018 through the opening 101 for loading, and the inner cylinder of the steam turbine rolls to the right along the top inclined surface of the loading port 101, and finally stops at the rightmost end position of the loading platform 2018 under the limiting action of the limiting block 2020. In addition, since the front and rear two deviation correction baffles 102 are set to seal the front and rear of the loading platform 2018, the inner cylinder of the steam turbine can be prevented from rolling off the front or rear of the loading platform 2018. At the same time, the output shaft of the reduction motor 700 drives the driving pulley 701 to rotate clockwise at a low speed. The rotation of the driving pulley 701 drives the first driven pulley 2017 to rotate through the transmission action of the power belt 702. The first driven pulley 20 The rotation of the central axis 201 drives the front and rear three-dimensional turntables 202 and the plurality of bearing seats 203 to rotate together in a clockwise low-speed manner around the central axis 201 axially. The rotation of the bearing seat 203 drives the push rod 204, the four-corner claws 205, the tensioning claws 207, the moving magnetic block 2010 and the planetary gear 211 to rotate together. When the front and rear moving magnetic blocks 2010 rotate upward from between the front and rear second electromagnetic rings 2014, the magnetic properties of the second electromagnetic rings 2014 are opposite to those of the moving magnetic blocks 2010, generating a magnetic force, so that the front and rear moving magnetic blocks 2010 move away from each other under the magnetic attraction of the front and rear second electromagnetic rings 2014. The two moving magnetic blocks 2010 move away from each other and further drive the moving magnetic blocks 2010 to rotate upward from the front and rear second electromagnetic rings 2014. The two four-corner claws 205 connected thereto are moved along the outer walls of the front and rear push rods 204, and drive the tensioning claws 207 connected to the four-corner claws 205 to move together, that is, the front and rear sides of the tensioning claws 207 in the front and rear directions are opened, and as the central shaft 201 continues to rotate, the moving magnetic block 2010 located between the front and rear second electromagnetic rings 2014 moves to between the front and rear first electromagnetic rings 2013. Since the magnetism of the first electromagnetic rings 2013 is the same as that of the moving magnetic block 2010, a repulsive force is generated between the two, thereby pushing the front and rear opened moving magnetic blocks 2010 toward the middle. During the movement of the front and rear moving magnetic blocks 2010 toward the middle, the front and rear four-corner claws 205 and the tensioning claws 207 connected thereto are driven to move. The tensioning claw 207 connected to the four-corner claw 205 is pushed toward the middle, so that the front and rear two four-corner claws 205 drive the tensioning claw 207 to just insert into the interior of a turbine inner cylinder located at the rightmost end of the loading platform 2018. As the front and rear two four-corner claws 205 and the tensioning claw 207 connected to the four-corner claw 205 move toward the middle, the flexible steel wire 209 is gradually straightened, thereby applying a pulling force to the end of the tensioning claw 207, so that the four tensioning claws 207 rotate and expand toward the periphery along the hinge positions of the four first hinge grooves 206, thereby abutting against the inner wall of the turbine inner cylinder, achieving an automatic tensioning effect on the turbine inner cylinder, thereby carrying the tensioned turbine inner cylinder to rotate clockwise along the axial direction of the central axis 201.When the tensioned steam turbine inner cylinder rotates axially along the central axis 201 to the area of ​​multiple flame nozzles 600, it is burned by the multiple flame nozzles 600 with high-temperature flames, so that the temperature of the steam turbine inner cylinder rises rapidly. During this period, due to the meshing action of the planetary gear 2011 and the sun gear 2012, the push rod 204 rotates along the central axis 201 axially. The push rod 204 also rotates by itself. The self-rotation of the push rod 204 further drives the four-corner claw 205 and the tensioning foot claw 207 to rotate together under the torque limiting action of the key block 2015 and the keyway 2016, so that the steam turbine inner cylinder tensioned on the outer periphery of the tensioning foot claw 207 rotates together, ensuring that the surface of the steam turbine inner cylinder can be burned by the high-temperature flame sprayed by the flame nozzle 600, which is conducive to ensuring the uniformity of the heating of the steam turbine inner cylinder and improving the quenching effect;

[0055] When the inner cylinder of the steam turbine rotates around the axial direction of the central axis 201 to the lower position inside the quenching box 100, the inner cylinder of the steam turbine in a high-temperature state is immersed in the quenching liquid. During this period, the temperature of the quenching liquid in the quenching box 100 and the water tank 104 is monitored in real time by the temperature monitoring sensor 800. When the temperature of the quenching liquid is higher than the use requirement, the two cooling fans 403 are started to blow air to the top of the multiple heat sinks 402, and the quenching liquid is supplied through the multiple heat sinks 402 to cool the quenching liquid, so that the quenching liquid is always maintained within the required temperature range, thereby avoiding uneven quality of the inner cylinder of the steam turbine after quenching;

[0056] After quenching, the inner cylinder of the steam turbine continues to rotate around the axial direction of the central axis 201, and the inner cylinder of the steam turbine is lifted out of the quenching liquid. During this period, the operation of the power belt 702 also drives the second driven pulley 3011 to rotate, and further drives the crankshaft 3010 to rotate with the second driven pulley 3011, and through the connection of the connecting rod 308, the articulated seat 306 is reciprocated left and right. The reciprocating swing of the articulated seat 306 further drives the two sliding rods 302 to swing together through the shifting block 305. Since the sliding rod 302 is slidably installed inside the sliding seat 301, the sliding The sliding of the movable seat 301 can be more stable, and the reciprocating swing of the slide bar 302 to the left and right further drives the connecting block 303 to swing together with the receiving plate 304. It should be noted here that the specifications of the active pulley 701, the first driven pulley 2017 and the second driven pulley 3011 of the device are set by adaptability. Therefore, when the inner cylinder of the steam turbine is fished out of the quenching liquid after quenching, the slide bar 302 just slides to the right, that is, it drives the connecting block 303 and the receiving plate 304 to move to the right, ensuring that the receiving plate 304 does not interfere with the inner cylinder of the steam turbine. When the steam turbine inner cylinder moves up to the top of the receiving plate 304, the slide bar 302 just drives the connecting block 303 and the receiving plate 304 to move to the left. When the receiving plate 304 moves to the leftmost position, the moving magnetic block 2010 carrying the quenched steam turbine inner cylinder just enters between the front and rear second electromagnetic rings 2014. Since the magnetic properties of the second electromagnetic rings 2014 are opposite to those of the moving magnetic block 2010, the magnetic attraction between the two attracts the front and rear moving magnetic blocks 2010 to move away from each other. The front and rear moving magnetic blocks 2010 move away from each other and further drive the moving magnetic blocks connected to them. The two four-corner claws 205 move together with the tensioning claws 207 connected to the four-corner claws 205, and the force on the flexible steel wire 209 is released, ending the pulling force on the end of the tensioning claws 207, making it convenient for the front and rear tensioning claws 207 to extend from the inside of the turbine inner cylinder. After the tensioning claws 207 are extended, the turbine inner cylinder falls to the top of the receiving plate 304 due to gravity, and rolls to the top of the receiving platform 106 from the top of the receiving plate 304 set 15 degrees to the left, and then rolls onto the conveyor belt of the unloading conveyor 500, and is transported to the next processing station by the unloading conveyor 500.

[0057] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. A heat treatment device for casting a steam turbine inner cylinder, comprising a quenching box (100), a feeding assembly (200) and a blanking assembly (300), characterized in that: A feeding assembly (200) is provided inside the quenching box (100), and the feeding assembly (200) is used for feeding materials to the inner cylinder of the steam turbine. A material unloading assembly (300) is provided inside the quenching box (100), and the material unloading assembly (300) is used for unloading materials from the inner cylinder of the steam turbine. A plurality of mounting holes (103) are provided at the upper right portion of the outer wall of the quenching box (100), and flame spray heads (600) are fixedly mounted inside the mounting holes (103); The feeding assembly (200) comprises a central axis (201) rotatably mounted between the front wall and the rear wall of the quenching box (100); two three-dimensional turntables (202) symmetrically distributed front and rear are fixedly mounted on the outer wall of the central axis (201); a plurality of bearing seats (203) distributed at equal angles are fixedly mounted on the side surfaces of the two three-dimensional turntables (202) that are close to each other; a push rod (204) is rotatably mounted inside the bearing seat (203); four-corner claws (205) are slidably mounted on the outer wall of the push rod (204); four corner ends of the four-corner claws (205) are provided with first hinge grooves (206); the first hinge grooves (206) are hinged with tensioning claws (207); the ends of the push rods (204) are fixedly mounted A limit slider (208) is installed, and four flexible steel wires (209) are fixedly installed on a side of the limit slider (208) away from the push rod (204), and one end of the flexible steel wire (209) away from the limit slider (208) is fixedly connected to the surface of the tensioning claw (207), and a moving magnetic block (2010) is fixedly installed on a side of the four-corner claw (205) away from the limit slider (208), and a planetary gear (211) is fixedly installed on one end of the push rod (204) away from the limit slider (208). A sun gear (212) is fixedly installed on the front wall and the rear wall of the quenching box (100), and a first electromagnetic ring (213) and a second electromagnetic ring (2014) are fixedly installed on the front wall and the rear wall of the quenching box (100).

2. A heat treatment device for steam turbine inner cylinder casting according to claim 1, characterized in that: The sun gear (212) is meshed with the planetary gear (2011); two key blocks (2015) are fixedly mounted on the outer wall of the push rod (204); the two key blocks (2015) are symmetrically distributed about the center of the push rod (204); the inner wall of the four-corner claw (205) is provided with two key slots (2016); the specifications of the two key slots (2016) are compatible with the specifications of the two key blocks (2015); and the inner wall of the key slot (2016) is slidably connected to the outer wall of the key block (2015).

3. The heat treatment device for steam turbine inner cylinder casting according to claim 2 is characterized in that: The first electromagnetic ring (2013) and the second electromagnetic ring (2014) together form a circular magnet structure, and the first electromagnetic ring (2013) and the second electromagnetic ring (2014) are located on the periphery of the sun gear (2012), the magnetism of the first electromagnetic ring (2013) is the same as the magnetism of the moving magnetic block (2010), the magnetism of the second electromagnetic ring (2014) is opposite to the magnetism of the moving magnetic block (2010), and a first driven pulley (2017) is fixedly mounted on the front end of the central shaft (201).

4. A heat treatment device for steam turbine inner cylinder casting according to claim 3, characterized in that: A loading port (101) is provided at the top left end of the quenching box (100), a loading platform (2018) is fixedly installed on the left top wall of the quenching box (100), the loading platform (2018) is located at the bottom of the loading port (101), and a support bar (2019) is fixedly installed at the bottom right end of the loading platform (2018), and the bottom of the support bar (2019) is movably installed on the central shaft (201) through a bearing. In the middle of the outer wall of the loading platform (2018), the front and rear parts of the loading platform (2018) are fixedly provided with a correcting baffle (102), the top of the correcting baffle (102) is fixedly connected to the top wall of the quenching box (100), and the right end of the loading platform (2018) is fixedly installed with a limit block (2020), the limit block (2020) is arranged in an arc shape, and the arc center of the limit block (2020) is concentric with the central axis (201).

5. The heat treatment device for steam turbine inner cylinder casting according to claim 4 is characterized in that: The material unloading assembly (300) comprises a sliding seat (301) fixedly mounted between the front wall and the rear wall of the quenching box (100), the sliding seat (301) being located at the bottom of the loading platform (2018), two sliding rods (302) distributed front and back being slidably mounted inside the sliding seat (301), the right end of the sliding rod (302) being bent downward at a right angle, and a connecting block (303) being fixedly mounted at the bottom of the two sliding rods (302), the connecting block (303) being fixedly mounted at the bottom of the two sliding rods (302), and the connecting block (303) being fixedly mounted at the bottom of the two sliding rods (302). A material receiving plate (304) is fixedly installed at the left end of the connecting block (303), and the material receiving plate (304) is inclined at 15 degrees to the left. The material receiving plate (304) is located at the left end of the interior of the quenching box (100). A material receiving platform (106) is fixedly installed between the front wall and the rear wall of the quenching box (100), and the material receiving platform (106) is located at the left end of the material receiving plate (304), and the position of the material receiving platform (106) corresponds to the position of the unloading port of the quenching box (100).

6. The heat treatment device for steam turbine inner cylinder casting according to claim 5, characterized in that: A shift block (305) is commonly installed at the left ends of the two sliding rods (302), a hinge seat (306) is fixedly installed in the middle of the right side surface of the shift block (305), a second hinge groove (307) is opened at the bottom of the hinge seat (306), a connecting rod (308) is hinged inside the second hinge groove (307), a crankshaft (3010) is rotatably installed between the front wall and the rear wall of the quenching box (100), the crankshaft (3010) is located at the bottom of the sliding seat (301), one end of the connecting rod (308) away from the second hinge groove (307) is hinged to the crankshaft (3010), and a second driven pulley (3011) is fixedly installed at the front end of the crankshaft (3010).

7. The heat treatment device for steam turbine inner cylinder casting according to claim 6 is characterized in that: A water tank (104) is fixedly installed at the lower right part of the quenching box (100), the interior of the water tank (104) is connected to the interior of the quenching box (100), a filling pipe (107) is fixedly installed at the upper left part of the front of the water tank (104), the interior of the filling pipe (107) is connected to the interior of the water tank (104), a gland is screwed on the end of the filling pipe (107), and a plurality of fixed grooves (105) distributed equidistantly in the front and rear are formed through the top of the water tank (104); A cooling assembly (400) is provided on the top of the water tank (104), and the cooling assembly (400) includes a protective cover (401) fixedly mounted on the top of the water tank (104); a heat sink (402) is fixedly plugged into the interior of the fixed tank (105); two front and rear heat sink fans (403) are installed on the top of the water tank (104) via a fixed bracket; the heat sink fans (403) are located on the top of the heat sink (402); and a temperature monitoring sensor (800) is fixedly mounted on the bottom wall of the water tank (104).

8. The heat treatment device for steam turbine inner cylinder casting according to claim 7 is characterized in that: An equipment frame (900) is fixedly mounted on the bottom of the quenching box (100), a reduction motor (700) is fixedly mounted on the left end of the equipment frame (900), a driving pulley (701) is fixedly mounted on the output shaft of the reduction motor (700), and at least one power belt (702) is commonly sleeved on the peripheries of the driving pulley (701), the first driven pulley (2017) and the second driven pulley (3011).

9. The heat treatment device for steam turbine inner cylinder casting according to claim 8, characterized in that: A material unloading conveyor (500) is fixedly provided at the left end of the quenching box (100).

10. A treatment process using the heat treatment device for steam turbine inner cylinder casting according to claim 9, characterized in that: The following steps are involved: S1. The inner cylinder of the steam turbine is placed on the top of the loading platform (2018) through the opened loading port (101), and the inner cylinder of the steam turbine rolls to the right along the top inclined surface of the loading platform (2018), and finally stops at the rightmost end position of the loading platform (2018) under the limiting action of the limiting block (2020); S2, the output shaft of the reduction motor (700) drives the driving pulley (701) to rotate clockwise at a low speed, and the driving pulley (701) rotates through the transmission action of the power belt (702) to drive the first driven pulley (2017) to rotate, so that the feeding assembly (200) rotates clockwise, driving the inner cylinder of the steam turbine located at the rightmost end of the loading platform (2018) to rotate together, and after the inner cylinder of the steam turbine is axially rotated along the central axis (201) to the area of ​​the multiple flame nozzles (600), it is burned by the high-temperature flames sprayed by the multiple flame nozzles (600), so that the temperature of the inner cylinder of the steam turbine rises rapidly; S3, when the inner cylinder of the steam turbine rotates axially around the central axis (201) to a position below the interior of the quenching box (100), the inner cylinder of the steam turbine in a high-temperature state is immersed in the quenching liquid. During this period, the temperature of the quenching liquid in the quenching box (100) and the water tank (104) is monitored in real time by the temperature monitoring sensor (800). When the temperature of the quenching liquid is higher than the use requirement, the two cooling fans (403) are started to blow air to the top of the plurality of heat sinks (402), so as to provide the quenching liquid with a cooling effect through the plurality of heat sinks (402), so that the quenching liquid is always maintained within the required temperature range; S4. Finally, the feeding component (200) places the quenched steam turbine inner cylinder on the top of the receiving plate (304) of the unloading component (300), and conveys the quenched steam turbine inner cylinder to the conveyor belt of the unloading conveyor (500) through the unloading component (300), and is conveyed to the next processing station by the unloading conveyor (500).

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