A lifting device capable of controlling hoisting level of outer cylinder of steam turbine

Abstract

The present application relates to steam turbine hoisting technology field, specifically said is a kind of hoist capable of hoisting horizontal control of steam turbine outer cylinder, including hanger, leveling actuator, measuring device and lifting buckle, the lifting buckle is respectively set along the four around of the steam turbine outer cylinder required hoisting, the hanger includes rectangular frame, suspender and universal shaft, the suspender is provided with two groups, one end of two groups suspender is respectively connected with the both ends of hanger top by pivot, the end of suspender away from hanger is respectively provided with hanging ring, the universal shaft is provided with four groups, four groups universal shaft is respectively connected in the corner of rectangular frame bottom, the leveling actuator is provided with four groups. Through the assembly of hanger, leveling actuator, measuring device and lifting buckle, provide a set of hoist structure with stable strength and high precision for steam turbine overhaul period, outer cylinder hoisting, make the safety and efficiency better in the process of steam turbine outer cylinder disassembly, back loading.

Description

Technical Field

[0001] This invention relates to the field of steam turbine hoisting technology, and more specifically to a hoisting tool that can control the horizontal movement of the outer cylinder of a steam turbine. Background Technology

[0002] When overhauling a steam turbine, it is necessary to completely disassemble, clean, and inspect it. The upper cylinder of the low-pressure inner cylinder of the steam turbine weighs about 80,000 kg. The general special rigging is a pressed steel wire rope rigging. There are four riggings in total, and four sets of cylinder hoisting adjustment devices (with matching steel wire rope rings) are required for adjustment. However, the hoisting precision of the outer cylinder of the steam turbine is high, and the levelness of the hoisting seriously affects the safety and efficiency of the hoisting.

[0003] Currently, during the disassembly and reassembly of the outer cylinder of a steam turbine, manual assistance is required to help with operations such as docking and clamping between the outer cylinder and the base, and adjusting ropes. Remote operation from a safe distance is not possible, and it cannot effectively prevent dangerous actions such as people climbing onto the outer cylinder to adjust the wire rope length. Therefore, a lifting device capable of horizontally controlling the lifting of the outer cylinder of a steam turbine is proposed. This device provides a stable and highly accurate lifting structure for the outer cylinder during steam turbine maintenance, improving safety and efficiency during the disassembly and reassembly of the outer cylinder, reducing manual intervention, and increasing operational convenience. Furthermore, the combination of a laser ranging unit and a magnetic switch enables real-time monitoring and adjustment of the lifting height, further enhancing operational precision. Summary of the Invention

[0004] To address the problems in existing technologies, this invention provides a lifting device for horizontal control of the outer cylinder of a steam turbine. This device facilitates stable and precise lifting of the outer cylinder during steam turbine maintenance, improving safety and efficiency during the disassembly and reassembly of the outer cylinder, reducing manual intervention, and enhancing operational convenience. Furthermore, the combination of a laser ranging unit and a magnetic switch enables real-time monitoring and adjustment of the lifting height, further improving operational accuracy. This invention's horizontal control lifting device for the outer cylinder of a steam turbine demonstrates significant benefits in improving lifting accuracy, enhancing operational flexibility, achieving intelligent control, ensuring safety and reliability, and increasing work efficiency.

[0005] The technical solution adopted by this invention to solve its technical problem is a lifting device for horizontal control of the hoisting of the outer cylinder of a steam turbine, including a lifting frame, a leveling actuator, a measuring device, and lifting buckles. The lifting buckles are respectively arranged around the outer cylinder of the steam turbine to be hoisted. The lifting frame includes a rectangular frame, lifting rods, and universal joints. There are two sets of lifting rods, one end of each set of lifting rods is rotatably connected to both ends of the top of the lifting frame through a rotating shaft. The end of each lifting rod away from the lifting frame is provided with a hanging ring. There are four sets of universal joints, and the four sets of universal joints are rotatably connected to the corners of the bottom of the rectangular frame.

[0006] The feature is that the leveling actuator is provided in four sets, and the four sets of leveling actuators are respectively located at the bottom of the four sets of universal joints, and the bottom of the four sets of leveling actuators are respectively connected to the corresponding hooks.

[0007] By adopting the above technical solution, a lifting device structure with strong lifting stability and high precision is provided for the outer cylinder hoisting during turbine overhaul, through the components composed of a hoist, leveling actuator, measuring device and hoisting buckle, so as to improve the safety and efficiency of the disassembly and reassembly process of the outer cylinder of the turbine.

[0008] The lifting device uses a universal joint to connect the lifting rod and the rectangular frame, as well as a flexible connection between the leveling actuator and the lifting buckle. This allows the lifting device to adapt to turbine outer cylinders of different shapes and sizes, enhancing its versatility and flexibility. Through the setting of four sets of leveling actuators, including hydraulic cylinders, controller boxes and locking devices, the horizontal state of the turbine outer cylinder can be precisely adjusted during the lifting process, effectively avoiding equipment damage or installation accuracy problems caused by unbalanced lifting, and improving installation quality and efficiency.

[0009] The lifting device uses a universal joint to connect the lifting rod and the rectangular frame, as well as a flexible connection between the leveling actuator and the lifting buckle, which allows the lifting device to adapt to turbine outer cylinders of different shapes and sizes, enhancing the versatility and flexibility of the lifting device.

[0010] By assembling and coordinating the gantry crane with an external crane, the outer cylinder of the turbine is suspended by a leveling actuator. A measuring device measures the distance of the outer cylinder from the ground and sends the measurement data to the leveling actuator, enabling the actuator to level the outer cylinder in real time during the lifting process. This ensures the safety and efficiency of the disassembly and reassembly of the outer cylinder, allowing personnel to operate remotely from a safe distance during the lifting process. This effectively avoids dangerous behaviors such as climbing onto the outer cylinder to adjust the length of the wire rope.

[0011] Specifically, the leveling actuator includes a hydraulic cylinder, a controller box, and a locking device. The locking device is located at the bottom of the hydraulic cylinder, and the top sleeve of the output end of the hydraulic cylinder is rotatably connected to the bottom of the universal joint at the corresponding position via a rotating shaft.

[0012] By adopting the above technical solution, the lifting height of the four corners of the turbine outer cylinder lifted from the bottom of the crane is adjusted by the extension and retraction of the hydraulic cylinder. This helps to improve the stability and assembly efficiency during the lifting, maintenance and lowering of the turbine outer cylinder. The controller box is wirelessly connected to the measuring device. The two work together to enable the hydraulic cylinder to extend and retract in real time based on the real-time height data of the four corners of the turbine outer cylinder from the ground. This ensures the stability and accuracy during reassembly and eliminates the need for manual assistance in leveling.

[0013] The locking device secures the lifting buckle of the turbine outer cylinder. After the locking device engages the buckle, as the lifting frame is raised, the locking device gradually locks the buckle based on the weight of the turbine outer cylinder, reducing the risk of slippage and ensuring the safety of the turbine outer cylinder lifting. Simultaneously, after the buckle is locked, the controller box is powered on and the measuring device is activated, allowing the measuring device to measure the height of the turbine outer cylinder during the lifting process.

[0014] Specifically, the locking device includes a metal ring, a C-shaped claw, a groove, and a slider. The groove is opened along one side of the inner side of the metal ring, and the slider is fixedly connected to the tail of the C-shaped claw. The slider is slidably connected to the groove.

[0015] The top diameter of the metal lifting ring is larger than the bottom diameter, and the top of the metal lifting ring is connected to the bottom of the cylinder sleeve. The diameter of the C-shaped claw is the same as the inner bottom diameter of the metal lifting ring.

[0016] A tension spring is connected to the top of the inner side of the metal ring, and the bottom of the tension spring is fixedly connected to the top of the C-shaped claw.

[0017] By adopting the above technical solutions, the design of the locking device, especially the combination of the C-shaped claw and the metal lifting ring, and the protection of the tension spring, ensures the stability and safety of the lifting equipment during the lifting process.

[0018] Specifically, an output electrode is provided at the bottom of the metal ring, and an input electrode corresponding to the output electrode is provided at the bottom of the C-shaped claw;

[0019] The controller box contains a cylinder remote control module, a cylinder battery, and a cylinder power supply module for powering the cylinder remote control module. The cylinder power supply module is installed on the cylinder remote control module. The positive terminal of the cylinder battery is connected in series with the output electrode, the negative terminal of the cylinder battery is connected to the negative terminal of the cylinder power supply module, and the positive terminal of the cylinder power supply module is connected to the input electrode.

[0020] The remote control module for the hydraulic cylinder has a built-in wireless data transceiver module and a power on / off signal transmission module.

[0021] Specifically, the measuring device includes a laser ranging unit, a magnetic switch, a first stainless steel sheet and a second stainless steel sheet. The first stainless steel sheet and the second stainless steel sheet are respectively fixed to the top and one side of the laser ranging unit, and the magnetic switch is magnetically connected to the first stainless steel sheet or the second stainless steel sheet.

[0022] The laser ranging unit includes a device housing with a built-in motherboard, and further includes a power-on / off signal receiving module, a ranging power supply module, a ranging battery, a central processing unit, a ranging wireless data transceiver module, and a distance monitoring module mounted on the motherboard. The ranging wireless data transceiver module is built into the central processing unit. The power-on / off signal receiving module receives the power-on / off signal from the power-on / off signal transmitting module. The output of the ranging power supply module is connected to the input of the power-on / off signal receiving module and the central processing unit. The power-on / off signal receiving module is a wireless signal receiving module with a solenoid valve. The solenoid valve of the power-on / off signal receiving module is connected in series in the power supply lines of the ranging power supply module and the central processing unit. The output of the ranging battery is connected to the input of the ranging power supply module. The ranging wireless data transceiver module is mounted on the central processing unit and forms a data connection through wires. The output of the distance monitoring module is connected to the input of the central processing unit.

[0023] By adopting the above technical solution, and integrating a remote control module for the hydraulic cylinder, a wireless data transceiver module for the hydraulic cylinder, and a start / stop signal transmission module, remote wireless control of the leveling actuator is achieved, reducing manual intervention and improving operational convenience. Simultaneously, the combination of the laser ranging unit and the magnetic switch enables real-time monitoring and adjustment of the hoisting height, further enhancing operational accuracy.

[0024] Specifically, the cylinder wireless data transceiver module and the ranging wireless data transceiver module are either Wi-Fi modules or Bluetooth modules.

[0025] Specifically, the distance monitoring module is an infrared laser ranging sensor.

[0026] Specifically, the cylinder is connected to an oil box, a hydraulic pump and a reversing solenoid valve. The oil box, hydraulic pump and reversing solenoid valve are all assembled in the controller box. The hydraulic pump is connected to the reversing solenoid valve and the oil box through an oil pipe. The reversing solenoid valve is connected to the cylinder through an oil pipe.

[0027] The oil box, hydraulic pump, and directional solenoid valve connected to the cylinder provide stable power support for the cylinder and can be manually adjusted, increasing the system's reliability and stability.

[0028] The output terminal of the remote control module for the hydraulic cylinder is electrically connected to the input terminals of the hydraulic pump and the reversing solenoid valve via wires. The power output terminal of the power supply module for the hydraulic cylinder is electrically connected to the power input terminals of the hydraulic pump and the reversing solenoid valve via wires. The cylinder sleeve is equipped with manual control buttons, switches and indicator lights for manual adjustment.

[0029] Specifically, the measuring device is designed with a dedicated aluminum alloy aviation storage case. The inside of the storage case is made of square-shaped anti-collision buffer EVA according to the shape of the equipment, which can effectively protect the equipment. The top of the storage case is designed with a lifting handle for easy handling.

[0030] By adopting the above technical solution, the dedicated aluminum alloy aviation storage case equipped with the measuring device not only protects the equipment from damage, but also facilitates carrying and storage. The anti-collision buffer EVA design inside the storage case further enhances the protection effect on the equipment.

[0031] The beneficial effects of this invention are as follows: The assembly consisting of a hanger, a leveling actuator, a measuring device, and a lifting buckle provides a stable and highly accurate lifting device structure for the outer cylinder lifting during turbine overhaul. This improves safety and efficiency during the disassembly and reassembly of the outer cylinder, reduces manual intervention, and enhances operational convenience. Furthermore, the combination of a laser ranging unit and a magnetic switch enables real-time monitoring and adjustment of the lifting height, further improving operational accuracy. The ranging and leveling functions are automatically activated upon power-up. This invention's turbine outer cylinder lifting horizontal control device demonstrates significant benefits in improving lifting accuracy, enhancing operational flexibility, achieving intelligent control, ensuring safety and reliability, and increasing work efficiency. It solves the problems of existing methods requiring manual assistance from workers to connect and engage the outer cylinder with the base during disassembly and reassembly of the outer cylinder, the inability to operate remotely from a safe distance, and the inability to effectively prevent dangerous actions such as manually climbing onto the outer cylinder to adjust the wire rope length. Attached Figure Description

[0032] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0033] Figure 1 This is a schematic diagram of the measuring device of the present invention assembled around the bottom of the outer cylinder of a steam turbine;

[0034] Figure 2 This is a structural diagram of the hanger of the present invention;

[0035] Figure 3 This is a schematic diagram of the leveling actuator of the present invention;

[0036] Figure 4 This is a schematic diagram of the locking device structure of the present invention;

[0037] Figure 5 This is a schematic diagram of the magnetic switch of the present invention installed on the top of the laser ranging unit;

[0038] Figure 6 This is a schematic diagram of the magnetic switch of the present invention mounted on the side of the laser ranging unit;

[0039] Figure 7 This is a schematic diagram of the measuring device of the present invention assembled around the bottom periphery of the outer cylinder of a steam turbine;

[0040] Figure 8 This is a schematic diagram of the electrical connections of the present invention;

[0041] In the diagram: 1. Hanger; 2. Leveling actuator; 21. Hydraulic cylinder; 22. Controller box; 23. Locking device; 231. Metal lifting ring; 232. C-shaped claw; 233. Slide rail; 234. Pull spring; 235. Output electrode; 236. Input electrode; 237. Steam turbine outer cylinder; 3. Hanging buckle; 4. Measuring device; 5. Laser ranging unit; 51. Magnetic switch; 52. First stainless steel sheet; 53. Second stainless steel sheet; 54. Rectangular frame; 11. Hanging rod; 121. Hanging ring; 121. Universal joint; 13. Detailed Implementation

[0042] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0043] To improve efficiency and schedule, as one embodiment of the present invention, such as Figures 1 to 8 As shown, the lifting device for horizontal control of the outer cylinder of a steam turbine according to the present invention includes a lifting frame 1, a leveling actuator 2, a measuring device 5, and lifting buckles 4. The lifting buckles 4 are respectively arranged around the outer cylinder 3 of the steam turbine to be lifted. The lifting frame 1 includes a rectangular frame 11, lifting rods 12, and universal joints 13. Two sets of lifting rods 12 are provided, and one end of each set of lifting rods 12 is rotatably connected to both ends of the top of the lifting frame 1 through a rotating shaft. The end of each lifting rod 12 away from the lifting frame 1 is provided with a hanging ring 121. Four sets of universal joints 13 are provided, and the four sets of universal joints 13 are rotatably connected to the corners of the bottom of the rectangular frame 11.

[0044] The feature is that the leveling actuator 2 is provided in four sets, and the four sets of leveling actuator 2 are respectively provided at the bottom of the four sets of universal joints 13, and the bottom of the four sets of leveling actuator 2 are respectively connected to the corresponding hooks 4.

[0045] In use, the lifting frame 1, leveling actuator 2, measuring device 5, and lifting buckle 4 provide a set of lifting tools with strong stability and high precision for the lifting of the outer cylinder during turbine maintenance. This makes the safety and efficiency of the disassembly and reassembly of the outer cylinder of the turbine better, reduces manual intervention, and improves the convenience of operation. At the same time, the combination of laser ranging unit and magnetic switch realizes real-time monitoring and adjustment of the lifting height.

[0046] To level the outer cylinder, for example, such as Figure 1-8 As shown, the present invention also includes a leveling actuator 2 comprising a hydraulic cylinder 21, a controller box 22, and a locking device 23. The locking device 23 is disposed at the bottom of the hydraulic cylinder 21, and the top sleeve of the output end of the hydraulic cylinder 21 is rotatably connected to the bottom of the universal joint 13 at the corresponding position via a rotating shaft.

[0047] In use, after the hydraulic pump and reversing solenoid valve are working, the cylinder 21 in this position can extend or retract, thereby raising or lowering the lifting height of the corner of the turbine outer cylinder 3 in this position. Through the simultaneous cooperation of the four sets of leveling actuators 2 and the laser ranging unit 51, the turbine outer cylinder 3 is leveled, thus ensuring that the four corners of the turbine outer cylinder 3 can receive instantaneous automatic locking protection and leveling movement during the lifting process.

[0048] To secure the lifting buckle of the turbine outer cylinder, for example, such as... Figure 4 As shown, the present invention also includes the locking device 23, which includes a metal ring 231, a C-shaped claw 232, a groove 233 and a slider 234. The groove 233 is opened along one side of the inner side of the metal ring 231, and the slider 234 is fixedly connected to the tail of the C-shaped claw 232. The slider 234 is slidably connected to the groove 233.

[0049] The top diameter of the metal ring 231 is larger than the bottom diameter, and the top of the metal ring 231 is connected to the bottom of the cylinder sleeve of the oil cylinder 21. The diameter of the C-shaped claw 232 is the same as the inner bottom diameter of the metal ring 231.

[0050] A tension spring 235 is connected to the top of the inner side of the metal ring 231, and the bottom of the tension spring 235 is fixedly connected to the top of the C-shaped claw 232.

[0051] In use, the metal ring 231 of the locking device 23 is fitted onto the hook 4, and the hook 4 is placed in the center of the C-shaped claw 232. The lifting equipment lifts the frame 1. During the lifting of the frame 1, the C-shaped claw 232 is subjected to the downward pressure of the turbine outer cylinder 3, causing the C-shaped claw 232 to slide down in the metal ring 231 based on the sliding guide of the slide groove 233 and the slider 234 during the lifting of the frame 1, until the bottom of the C-shaped claw 232 touches the bottom of the metal ring 231. At this time, the opening of the C-shaped claw 232 after touching the bottom will be blocked, so that the hook 4 of the turbine outer cylinder 3 is locked by the C-shaped claw 232.

[0052] After the outer cylinder 3 of the steam turbine falls, the hook 4 of the outer cylinder 3 will release the downward pressure on the C-shaped chuck 232. Based on the upward pull of the tension spring 235 on the C-shaped chuck 232, the bottom of the C-shaped chuck 232 will leave the contact with the bottom of the metal lifting ring 231, thereby de-energizing and stopping the leveling actuator 2.

[0053] For power supply and signal connection, for example, such as Figure 1-7 As shown, the present invention also includes an output electrode 236 disposed at the bottom of the inner side of the metal ring 231, and an input electrode 237 corresponding to the output electrode 236 disposed at the bottom of the C-shaped claw 232.

[0054] The controller box 22 is equipped with a cylinder remote control module, a cylinder battery, and a cylinder power supply module for powering the cylinder remote control module. The cylinder power supply module is installed on the cylinder remote control module. The positive terminal of the cylinder battery is connected in series with the output electrode 236, the negative terminal of the cylinder battery is connected to the negative terminal of the cylinder power supply module, and the positive terminal of the cylinder power supply module is connected to the input electrode 237.

[0055] The remote control module for the hydraulic cylinder has a built-in wireless data transceiver module and a power on / off signal transmission module.

[0056] During use, after the C-shaped claw 232 touches the bottom, the input electrode 237 at the bottom of the C-shaped claw 232 contacts the output electrode 236. At this time, the cylinder battery and cylinder power supply module in the controller box 22 are connected to the power supply, the cylinder remote control module is powered on and works, and the power on / off signal transmitting module on the cylinder remote control module sends a start signal to the power on / off signal receiving module in the laser ranging unit 51 under standby, and the laser ranging unit 51 starts working.

[0057] To measure the levelness of the outer cylinder hoisting, for example, such as Figure 5 , 6As shown in Figure 8, the present invention also includes the measuring device 5, which includes a laser ranging unit 51, a magnetic switch 52, a first stainless steel sheet 53 and a second stainless steel sheet 54. The first stainless steel sheet 53 and the second stainless steel sheet 54 are respectively fixed to the top and one side of the laser ranging unit 51, and the magnetic switch 52 is magnetically connected to the first stainless steel sheet 53 or the second stainless steel sheet 54.

[0058] The laser ranging unit 51 includes a device housing with a built-in motherboard, and further includes a power-on / off signal receiving module, a ranging power supply module, a ranging battery, a central processing unit, a ranging wireless data transceiver module, and a distance monitoring module mounted on the motherboard. The ranging wireless data transceiver module is built into the central processing unit. The power-on / off signal receiving module receives the power-on / off signal from the power-on / off signal transmitting module. The output of the ranging power supply module is connected to the input of the power-on / off signal receiving module and the central processing unit. The power-on / off signal receiving module is a wireless signal receiving module with a solenoid valve. The solenoid valve of the power-on / off signal receiving module is connected in series in the power supply line between the ranging power supply module and the central processing unit. The output of the ranging battery is connected to the input of the ranging power supply module. The ranging wireless data transceiver module is mounted on the central processing unit and forms a data connection through wires. The output of the distance monitoring module is connected to the input of the central processing unit.

[0059] In use, the distance monitoring modules of the four sets of laser ranging units 51 measure the distance between the bottom of the turbine outer cylinder 3 and the ground. The four sets of laser ranging units 51 exchange data through the ranging wireless data transceiver module. At the same time, the central processing unit calculates the difference between the four sets of data and obtains the difference between the measured data of the four sets of laser ranging units 51.

[0060] The cylinder wireless data transceiver module and the ranging wireless data transceiver module are either Wi-Fi modules or Bluetooth modules.

[0061] The distance monitoring module is an infrared laser rangefinder sensor.

[0062] To perform adjustment level difference, for example, such as Figure 1-8 As shown, the present invention also includes an oil box, a hydraulic pump and a reversing solenoid valve connected to the oil cylinder 21. The oil box, the hydraulic pump and the reversing solenoid valve are all assembled in the controller box 22. The hydraulic pump is connected to the reversing solenoid valve and the oil box through an oil pipe. The reversing solenoid valve is connected to the oil cylinder 21 through an oil pipe.

[0063] The output end of the remote control module for the hydraulic cylinder is electrically connected to the input end of the hydraulic pump and the reversing solenoid valve via wires. The power output end of the power supply module for the hydraulic cylinder is electrically connected to the power input end of the hydraulic pump and the reversing solenoid valve via wires. The cylinder 21 is equipped with manual control buttons, switches and indicator lights for manual adjustment.

[0064] In use, the central processing unit calculates the data difference between the four sets of data and the data measured by the four sets of laser ranging units 51. The difference is then converted into an execution command for the extension and retraction distance of the corresponding set of cylinders 21. The execution command of the processed data is sent to the cylinder wireless data transceiver module in real time through the ranging wireless data transceiver module. The cylinder remote control module controls the corresponding hydraulic pump and reversing solenoid valve based on the command signal, so that the cylinder 21 at that position can extend or retract.

[0065] The measuring device 5 is designed with a special aluminum alloy aviation storage box. The inside of the storage box is made of square-shaped anti-collision buffer EVA according to the shape of the equipment, which can effectively protect the equipment. The top of the storage box is designed with a lifting handle for easy handling.

[0066] When in use, the laser ranging unit 51 enters a sleep state. After it stops operating, it is retrieved by personnel and stored in an aluminum alloy aviation storage box.

[0067] In use, the hanging ring 121 on the boom 12 is attached to the hook of a crane, electric hoist, or other lifting equipment in the work area, thus suspending the boom 1. The lifting equipment lowers the boom 1 above the turbine outer cylinder 3 to be disassembled and maintained. The locking device 23 on the bottom corner leveling actuator 2 of the boom 1 is then engaged with the hook 4 at the corner of the turbine outer cylinder 3. During engagement, the metal hanging ring 231 of the locking device 23 is fitted onto the hook 4, and the hook 4 is positioned in the center of the C-shaped claw 232. Based on the appearance specifications of the turbine outer cylinder 3, after turning on the magnetic switch 52, the first stainless steel plate 53 and the second stainless steel plate 54 on the laser ranging unit 51 are magnetically connected to the magnetic switch 52. The magnetic switch 52 is then connected to the turbine outer cylinder 3. The outer cylinder 3 is magnetically attached to its bottom perimeter or the outer perimeter perimeter, ensuring that the laser detection beam of the distance monitoring module on the laser ranging unit 51 is perpendicular to the ground. Then, the lifting equipment lifts the frame 1. During the lifting of the frame 1, the C-shaped claw 232, due to the downward pressure from the outer cylinder 3, moves downward within the metal lifting ring 231 guided by the sliding groove 233 and the slider 234, until the bottom of the C-shaped claw 232 touches the bottom of the metal lifting ring 231. At this point, the opening of the C-shaped claw 232 after touching the bottom is sealed, allowing the lifting buckle 4 of the outer cylinder 3 to be locked by the C-shaped claw 232, ensuring the stability of the outer cylinder 3 during lifting and improving the lifting performance of the outer cylinder 3. To ensure safety during the hoisting process, after the C-shaped chuck 232 touches the bottom, the input electrode 237 and output electrode 236 at the bottom of the C-shaped chuck 232 come into contact. At this time, the cylinder battery and cylinder power supply module in the controller box 22 are powered on, and the cylinder remote control module is powered on. The start-up signal transmitting module on the cylinder remote control module sends a start signal to the start-up signal receiving module in the laser ranging unit 51 under standby, and the laser ranging unit 51 starts working. The distance monitoring modules of the four sets of laser ranging units 51 measure the distance between the bottom of the turbine outer cylinder 3 and the ground. The four sets of laser ranging units 51 exchange data through the ranging wireless data transceiver module. At the same time, the central processing unit calculates the data between the four sets of laser ranging units. The data difference measured between 51 is converted into an execution command for the extension / retraction distance of the corresponding set of cylinders 21. This processed data execution command is then sent in real-time to the cylinder wireless data transceiver module via the ranging wireless data transceiver module. The cylinder remote control module, based on this command signal, controls the corresponding hydraulic pump and reversing solenoid valve, causing the cylinders 21 at that position to extend or retract. This raises or lowers the lifting height of the turbine outer cylinder 3 at that position. Through the simultaneous cooperation of four sets of leveling actuators 2 and the laser ranging unit 51, the turbine outer cylinder 3 is leveled, ensuring that during lifting, the four corners of the turbine outer cylinder 3 receive instantaneous automatic locking protection and leveling movement.This improves the safety and efficiency of the turbine outer cylinder 3 during disassembly or reassembly, enabling automatic wake-up and leveling of the ranging and measuring functions after hoisting and power-on. This eliminates the need for tedious manual steps such as individually activating the ranging and adjusting the ropes, reducing manual intervention and improving operational convenience.

[0068] After the outer cylinder 3 of the steam turbine is hoisted and lowered, the lifting buckle 4 of the outer cylinder 3 will release the downward pressure on the C-shaped claw 232. Based on the upward pull of the tension spring 235 on the C-shaped claw 232, the bottom of the C-shaped claw 232 will leave the contact with the bottom of the metal lifting ring 231, thereby de-energizing and stopping the operation of the leveling actuator 2. At the same time, the start-up signal receiving module of the laser ranging unit 51 will lose signal, the laser ranging unit 51 will enter the sleep state and stop operating, and can be retrieved by personnel into the aluminum alloy aviation storage box.

[0069] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lifting device for horizontal control during the hoisting of the outer cylinder of a steam turbine, characterized in that, The device includes a hanger (1), a leveling actuator (2), a measuring device (5), and a lifting buckle (4). The lifting buckle (4) is set around the outer cylinder (3) of the turbine to be lifted. The hanger (1) includes a rectangular frame (11), a lifting rod (12), and a universal joint (13). There are two sets of lifting rods (12). One end of each set of lifting rods (12) is rotatably connected to the two ends of the top of the hanger (1) through a rotating shaft. The end of each lifting rod (12) away from the hanger (1) is provided with a hanging ring (121). There are four sets of universal joints (13). The four sets of universal joints (13) are rotatably connected to the corners of the bottom of the rectangular frame (11). The feature is that the leveling actuator (2) is provided in four sets, and the four sets of leveling actuators (2) are respectively provided at the bottom of the four sets of universal joints (13), and the bottom of the four sets of leveling actuators (2) are respectively connected to the corresponding hooks (4); The leveling actuator (2) includes a hydraulic cylinder (21), a controller box (22) and a locking device (23). The locking device (23) is located at the bottom of the hydraulic cylinder (21). The top sleeve of the output end of the hydraulic cylinder (21) is rotatably connected to the bottom of the universal joint (13) at the corresponding position through a rotating shaft. The locking device (23) includes a metal ring (231), a C-shaped claw (232), a groove (233), and a slider (234). The groove (233) is opened along one side of the metal ring (231), and the slider (234) is fixedly connected to the tail of the C-shaped claw (232). The slider (234) is slidably connected to the groove (233). The top diameter of the metal ring (231) is larger than the bottom diameter, and the top of the metal ring (231) is connected to the bottom of the cylinder sleeve of the oil cylinder (21). The diameter of the C-shaped claw (232) is the same as the inner bottom diameter of the metal ring (231). A tension spring (235) is connected to the top of the metal ring (231), and the bottom of the tension spring (235) is fixedly connected to the top of the C-shaped claw (232); The metal ring (231) has an output electrode (236) at its bottom, and the C-shaped claw (232) has an input electrode (237) at its bottom that corresponds to the output electrode (236). The controller box (22) is equipped with a cylinder remote control module, a cylinder battery and a cylinder power supply module for powering the cylinder remote control module. The cylinder power supply module is installed on the cylinder remote control module. The positive terminal of the cylinder battery is connected in series with the output electrode (236). The negative terminal of the cylinder battery is connected to the negative terminal of the cylinder power supply module. The positive terminal of the cylinder power supply module is connected to the input electrode (237). The remote control module for the hydraulic cylinder has a built-in wireless data transceiver module and a power on / off signal transmission module. The measuring device (5) includes a laser ranging unit (51), a magnetic switch (52), a first stainless steel sheet (53) and a second stainless steel sheet (54). The first stainless steel sheet (53) and the second stainless steel sheet (54) are respectively fixed to the top and one side of the laser ranging unit (51). The magnetic switch (52) is magnetically connected to the first stainless steel sheet (53) or the second stainless steel sheet (54). The laser ranging unit (51) includes a device housing with a built-in motherboard, and also includes a power-on / off signal receiving module, a ranging power supply module, a ranging battery, a central processing unit, a ranging wireless data transceiver module, and a distance monitoring module installed on the motherboard. The ranging wireless data transceiver module is built into the central processing unit. The power-on / off signal receiving module receives the power-on / off signal from the power-on / off signal transmitting module. The output of the ranging power supply module is connected to the input of the power-on / off signal receiving module and the central processing unit. The power-on / off signal receiving module is a wireless signal receiving module with a solenoid valve. The solenoid valve of the power-on / off signal receiving module is connected in series in the power supply line between the ranging power supply module and the central processing unit. The output of the ranging battery is connected to the input of the ranging power supply module. The ranging wireless data transceiver module is installed on the central processing unit and forms a data connection through wires. The output of the distance monitoring module is connected to the input of the central processing unit.

2. The lifting device for horizontal control of the outer cylinder of a steam turbine according to claim 1, characterized in that, The cylinder wireless data transceiver module and the ranging wireless data transceiver module are either Wi-Fi modules or Bluetooth modules.

3. A lifting device for horizontal control of the outer cylinder of a steam turbine according to claim 2, characterized in that, The distance monitoring module is an infrared laser rangefinder sensor.

4. A lifting device for horizontal control of the outer cylinder of a steam turbine according to claim 3, characterized in that, The cylinder (21) is connected to an oil box, a hydraulic oil pump and a reversing solenoid valve. The oil box, the hydraulic oil pump and the reversing solenoid valve are all assembled in the controller box (22). The hydraulic oil pump is connected to the reversing solenoid valve and the oil box through an oil pipe. The reversing solenoid valve is connected to the cylinder (21) through an oil pipe. The output end of the remote control module for the hydraulic cylinder is electrically connected to the input end of the hydraulic pump and the reversing solenoid valve via a wire. The power output end of the power supply module for the hydraulic cylinder is electrically connected to the power input end of the hydraulic pump and the reversing solenoid valve via a wire. The cylinder (21) is equipped with a manual control button, switch and indicator light for manual adjustment.

5. A lifting device for horizontal control of the outer cylinder of a steam turbine according to claim 4, characterized in that, The measuring device (5) is designed with a special aluminum alloy aviation storage box. The inside of the storage box is made of square-shaped anti-collision buffer EVA according to the shape of the equipment, which can effectively protect the equipment. The top of the storage box is designed with a lifting handle.

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