Device for removing turbine rotor coupling bolts and working method

Abstract

The present invention relates to the technical field of hardware tools. Disclosed are a device for removing turbine rotor coupling bolts and a working method. The device comprises a cross beam, wherein the left end of the cross beam is connected to a fixed support base, and an internal hexagonal socket base is fixedly provided on a right side surface of the fixed support base; and a movable support base and a fixed mounting base are each provided at the right end of the cross beam, the movable support base is located on the left side of the fixed mounting base, an internal hexagonal hydraulic wrench is provided on a left side surface of the movable support base, a hydraulic telescopic cylinder is mounted on the fixed mounting base, and a telescopic end of the hydraulic telescopic cylinder is drivingly connected to the movable support base. In the present invention, a bolt body can be restored to a loosened state from a bolt hole of a coupling and easily removed, thereby improving the removal efficiency of a coupling connecting bolt without causing damage to the bolt body.

Description

A device and working method for removing bolts from a steam turbine rotor coupling. Technical Field

[0001] This invention relates to a device and method for removing bolts from a turbine rotor coupling, belonging to the field of hardware tool technology. Background Technology

[0002] The turbine rotor coupling is a key component of the turbine. It is mainly responsible for connecting the various rotors of the turbine generator set and effectively transferring the power of the turbine to the generator. In the working process of the turbine, the coupling plays a vital role in connecting the various sections of the turbine rotor and the generator rotor and realizing the transmission of torque.

[0003] When disassembling a steam turbine rotor coupling, multiple connecting bolts need to be removed. However, after prolonged use, the bolts and nuts become tightly bound together due to long-term operation and vibration, increasing the difficulty of disassembly. This tightness is even more pronounced when the bolts are corroded or contaminated with oil. Current disassembly methods, after unscrewing the nuts, often involve using an external hammer to knock one end of the bolt out of the coupling's mounting hole, as the bolt body remains inserted. This method is physically demanding and doesn't easily remove the bolt body, resulting in low disassembly efficiency. Furthermore, hammering can deform or damage the bolt, rendering it unusable. Summary of the Invention

[0004] In order to solve the above-mentioned problems existing in the prior art, the present invention provides a device and working method for removing bolts from a steam turbine rotor coupling.

[0005] The technical solution of the present invention is as follows:

[0006] A device for removing bolts from a turbine rotor coupling includes a crossbeam. A fixed support is connected to the left end of the crossbeam. An internal hexagonal socket is fixedly installed on the right side of the fixed support. A movable support and a fixed mounting base are respectively provided on the right end of the crossbeam. The movable support is located to the left of the fixed mounting base. An internal hexagonal hydraulic wrench is provided on the left side of the movable support. A hydraulic telescopic cylinder is installed on the fixed mounting base. The telescopic end of the hydraulic telescopic cylinder is drivenly connected to the movable support.

[0007] As a preferred embodiment, a sliding groove is provided on the left side of the crossbeam, and the upper end of the movable support is embedded in the sliding groove to maintain a sliding connection that allows it to slide left and right. A reset spring for the movable support to move to the right and reset is installed on the left side of the inner cavity of the sliding groove.

[0008] As a preferred embodiment, a sliding rod is fixedly connected to the left side of the fixed mounting base, the left end of the sliding rod extends into the inner cavity of the sliding groove and is fixed to the left end wall of the sliding groove, and a sliding hole is provided at the upper end of the movable support base to slide and engage with the sliding rod.

[0009] As a preferred embodiment, reinforcing ribs are fixedly connected to the left side of the fixed mounting base and the four side walls of the fixed mounting base.

[0010] As a preferred embodiment, the right side of the fixed mounting base is connected to a flange mounting base via several supporting ribs. The hydraulic telescopic cylinder is fixedly mounted on the flange mounting base. The left end of the hydraulic telescopic cylinder passes through the fixed mounting base and is connected to a connecting end plate at its end. A buffer spring is abutting between the connecting end plate and the right side of the fixed mounting base. The lower end of the movable support base is provided with an opening slot, and the connecting end plate abuts against the internal hexagonal hydraulic wrench through the opening slot.

[0011] As a preferred embodiment, operating handles are fixedly installed on the left and right sides of the hydraulic telescopic cylinder, respectively.

[0012] As a preferred embodiment, the fixed support base is a three-dimensional support structure consisting of a main upright plate and side inclined plates welded together in a Y-shape.

[0013] As a preferred embodiment, the movable support base is a three-dimensional support structure consisting of a main upright plate and side inclined plates welded together in a Y-shape, and a connecting column connects the main upright plate and the side inclined plates.

[0014] As a preferred embodiment, a lifting ring is provided at the top of the crossbeam.

[0015] A method for operating a turbine rotor coupling bolt removal device, using the aforementioned turbine rotor coupling bolt removal device, includes the following steps.

[0016] Steps: Connect the hex wrench and the hydraulic telescopic cylinder to the external hydraulic power unit respectively;

[0017] Steps: Connect the turbine rotor coupling bolt removal device to the external hoisting rope equipment, and hoist the equipment to the turbine rotor coupling outlet;

[0018] Steps: Adjust the position of the device, engage the internal hexagonal socket of the left end of the device with the hexagonal end of the screw of one of the coupling bolts to be disassembled, and drive the movable support to move to the left by the hydraulic telescopic cylinder so that the internal hexagonal socket of the hydraulic wrench engages with the nut of the coupling bolt.

[0019] Steps: Loosen and remove the coupling bolt nuts by rotating the internal hex wrench in the direction of nut installation and removal;

[0020] Step: Further lift using a hydraulic telescopic cylinder to loosen the screws of the coupling bolts from the bolt holes on the coupling;

[0021] Steps: Remove the device and take out the screws of the coupling bolt to complete the removal of one coupling bolt.

[0022] The present invention has the following beneficial effects:

[0023] The turbine rotor coupling bolt removal device of this invention has a fixed hexagon socket seat and a movable hexagon hydraulic wrench fixedly installed below the crossbeam. The hexagon hydraulic wrench can achieve high torque turning, thereby unscrewing the nut of the connecting bolt. With the help of the hydraulic telescopic cylinder, the hexagon hydraulic wrench is pushed horizontally. The bolt body can be further pushed by the push rod to loosen it from the bolt hole of the coupling and make it easy to remove. This improves the disassembly efficiency of the coupling connecting bolt without damaging the bolt body. Attached Figure Description

[0024] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 is a partial structural schematic diagram of the present invention;

[0026] Figure 3 is a schematic diagram of the fixed mounting base structure of the present invention. Detailed Implementation

[0027] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. Example

[0028] Referring to Figures 1-3, a turbine rotor coupling bolt removal device includes a crossbeam 10, which is a square structural beam. A lifting ring 13 is provided on the top of the crossbeam 10. A fixed support 20 is connected to the left end of the crossbeam 10. In order to improve strength, the fixed support 20 is a three-dimensional support structure consisting of a main vertical plate 21 and a side inclined plate 22 welded together in a Y-shape.

[0029] A hexagonal socket seat 30 is fixedly provided on the right side of the fixed support 20. The hexagonal socket seat 30 is used to fasten the hexagonal end of the screw of the bolt, which plays a fixed and limiting role. In order to allow the screw to be smoothly pushed out of the coupling bolt hole and have room to move, the depth of the hexagonal socket seat 30 is greater than the thickness of the hexagonal end of the screw of the bolt.

[0030] A movable support seat 40 and a fixed mounting seat 50 are respectively provided on the right end of the crossbeam 10. The movable support seat 40 is located to the left of the fixed mounting seat 50. A slide groove 11 is provided on the left side of the crossbeam 10. The upper end of the movable support seat 40 is embedded in the slide groove 11 to maintain a sliding connection to the left and right. A return spring 12 for the movable support seat 40 to move to the right and reset is installed on the left side of the inner cavity of the slide groove 11. A slide rod 51 is fixedly connected to the left side of the fixed mounting seat 50. The left end of the slide rod 51 extends into the inner cavity of the slide groove 11 and is fixed to the left end wall of the slide groove 11. A slide hole 41 is provided on the upper end of the movable support seat 40 to slide and engage with the slide rod 51.

[0031] In order to improve the strength of the movable support base 40, the movable support base 40 is a three-dimensional support structure consisting of a main upright plate 21 and a side inclined plate 22 welded together in a Y-shape, and a connecting column 23 connects the main upright plate 21 and the side inclined plate 22.

[0032] In order to improve the installation strength of the fixed mounting base 50, a reinforcing rib plate 52 is fixedly connected between the left side of the fixed mounting base 50 and the four side walls of the fixed mounting base 50.

[0033] The left side of the movable support base 40 is equipped with an internal hexagonal hydraulic wrench 60. After the internal hexagonal hydraulic wrench 60 is connected to an external hydraulic station, it can be rotated by hydraulic drive to achieve high torque rotation, loosening the nut from the screw, saving time and effort, and improving operating efficiency.

[0034] A hydraulic telescopic cylinder 70 is installed on the fixed mounting base 50. The telescopic end of the hydraulic telescopic cylinder 70 is drivenly connected to the movable support base 40. Specifically, a flange mounting base 54 is connected to the right side of the fixed mounting base 50 through several support ribs 53. The hydraulic telescopic cylinder 70 is fixedly installed on the flange mounting base 54. The left end of the hydraulic telescopic cylinder 70 passes through the fixed mounting base 50 and is connected to a connecting end plate 71. A buffer spring 72 is abutted between the connecting end plate 71 and the right side of the fixed mounting base 50. By setting the buffer spring 72, when the hydraulic telescopic cylinder 70 pushes out the push screw, there is a contact buffer process to avoid impact collision causing damage to the screw end. The lower end of the movable support base 40 is provided with an opening slot 42. The connecting end plate 71 abuts against the internal hexagon hydraulic wrench 60 through the opening slot 42. Operating handles 73 are fixedly installed on the left and right sides of the hydraulic telescopic cylinder 70, respectively. Example

[0035] Based on the metallurgical slag waste heat recovery system of Embodiment 1, this embodiment provides 10. A working method for a turbine rotor coupling bolt removal device, using the turbine rotor coupling bolt removal device of Embodiment 1, including the following steps.

[0036] Step 1: Connect the internal hex wrench 60 and the hydraulic telescopic cylinder 70 to the external hydraulic station respectively;

[0037] Step 2: Connect the turbine rotor coupling bolt removal device to the external hoisting rope equipment and lift the equipment to the turbine rotor coupling outlet;

[0038] Step 3: Adjust the position of the device, engage the internal hexagonal socket seat 30 at the left end of the device with the hexagonal end of the screw of one of the coupling bolts to be disassembled, and drive the movable support seat 40 to the left through the hydraulic telescopic cylinder 70 so that the internal hexagonal socket of the internal hexagonal hydraulic wrench 60 engages with the nut of the coupling bolt.

[0039] Step 4: Loosen and remove the coupling bolt nuts by rotating the drive hex wrench 60 in the direction of nut installation and removal;

[0040] Step 5: Further lift using hydraulic telescopic cylinder 70 to loosen the screws of the coupling bolts from the bolt holes on the coupling;

[0041] Step 6: Remove the device and take out the screws of the coupling bolt to complete the removal of one coupling bolt.

[0042] The above are merely embodiments of the present invention and do not limit the scope of the patent. Any equivalent structural or procedural transformations made based on the description and drawings of the present invention, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of the present invention.

Claims

1. A device for removing bolts from a steam turbine rotor coupling, characterized in that: The system includes a crossbeam (10), with a fixed support base (20) connected to the left end of the crossbeam (10). A hexagonal socket seat (30) is fixedly provided on the right side of the fixed support base (20). A movable support base (40) and a fixed mounting base (50) are respectively provided on the right end of the crossbeam (10). The movable support base (40) is located to the left of the fixed mounting base (50). A hexagonal hydraulic wrench (60) is provided on the left side of the movable support base (40). A hydraulic telescopic cylinder (70) is installed on the fixed mounting base (50). The telescopic end of the hydraulic telescopic cylinder (70) is drivenly connected to the movable support base (40).

2. The turbine rotor coupling bolt removal device as described in claim 1, characterized in that: A groove (11) is provided on the left side of the crossbeam (10). The upper end of the movable support (40) is embedded in the groove (11) to maintain a sliding connection that can slide left and right. A reset spring (12) for the movable support (40) to move to the right and reset is installed on the left side of the inner cavity of the groove (11).

3. The turbine rotor coupling bolt removal device as described in claim 2, characterized in that: A slide rod (51) is fixedly connected to the left side of the fixed mounting base (50). The left end of the slide rod (51) extends into the inner cavity of the slide groove (11) and is fixed to the left end wall of the slide groove (11). The upper end of the movable support base (40) is provided with a sliding hole (41) that slides and engages with the slide rod (51).

4. The turbine rotor coupling bolt removal device as described in claim 2, characterized in that: Reinforcing ribs (52) are fixedly connected to the left side of the fixed mounting base (50) and the four side walls of the fixed mounting base (50).

5. The turbine rotor coupling bolt removal device as described in claim 1, characterized in that: The right side of the fixed mounting base (50) is connected to a flange mounting base (54) via several supporting ribs (53). The hydraulic telescopic cylinder (70) is fixedly mounted on the flange mounting base (54). The left end of the hydraulic telescopic cylinder (70) passes through the fixed mounting base (50) and is connected to a connecting end plate (71). A buffer spring (72) is abutted between the connecting end plate (71) and the right side of the fixed mounting base (50). The lower end of the movable support base (40) is provided with an opening groove (42). The connecting end plate (71) abuts against the internal hexagonal hydraulic wrench (60) through the opening groove (42).

6. The turbine rotor coupling bolt removal device as described in claim 1, characterized in that: Operating handles (73) are fixedly installed on the left and right sides of the hydraulic telescopic cylinder (70).

7. The turbine rotor coupling bolt removal device as described in claim 1, characterized in that: The fixed support base (20) is a three-dimensional support structure consisting of a main upright plate (21) and a side inclined plate (22) welded together in a Y-shape.

8. The turbine rotor coupling bolt removal device as described in claim 1, characterized in that: The movable support base (40) is a three-dimensional support structure consisting of a main upright plate (21) and a side inclined plate (22) welded together in a Y-shape, and a connecting column (23) is connected between the main upright plate (21) and the side inclined plate (22).

9. The turbine rotor coupling bolt removal device as described in claim 1, characterized in that: The top of the crossbeam (10) is provided with a lifting ring (13).

10. A method for operating a turbine rotor coupling bolt removal device, using the turbine rotor coupling bolt removal device according to any one of claims 2-9, characterized in that: Includes the following steps Step 1: Connect the internal hex wrench (60) and the hydraulic telescopic cylinder (70) to the external hydraulic station respectively; Step 2: Connect the turbine rotor coupling bolt removal device to the external hoisting rope equipment and lift the equipment to the turbine rotor coupling outlet; Step 3: Adjust the position of the device, engage the internal hexagonal socket seat (30) at the left end of the device with the screw hexagonal end of one of the coupling bolts to be disassembled, and drive the movable support seat (40) to the left through the hydraulic telescopic cylinder (70) so that the internal hexagonal socket of the internal hexagonal hydraulic wrench (60) engages with the nut of the coupling bolt; Step 4: Loosen and remove the nuts on the coupling bolts by rotating the drive hex wrench (60) in the direction of nut installation and removal; Step 5: Further lift using the hydraulic telescopic cylinder (70) to loosen the screws of the coupling bolts from the bolt holes on the coupling; Step 6: Remove the device and take out the screws of the coupling bolt to complete the removal of one coupling bolt.

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