A grinding device for processing the intermediate pressure inner cylinder of a steam turbine

Abstract

The utility model relates to the technical field of processing equipment for steam turbines, and discloses a grinding device for processing a medium-pressure inner cylinder of a steam turbine, comprising a motor, a rotating column is installed at the front end of the motor, a first positioning sleeve is connected to the internal movable sleeve of the rear end of the rotating column, a threaded sleeve is connected to the external movable sleeve of the first positioning sleeve, and a support column is fixedly connected to the front end of the first positioning sleeve. By rotating the threaded sleeve, the threaded sleeve drives the positioning sleeve to move inward, and then drives the inclined rod to move inward, and at the same time, the two groups of inclined rods drive the middle part of the arc spring to move outward, and at the same time, the arc spring drives the grinding gasket to diffuse outward, and then according to the different diameters of the inner wall of the medium-pressure inner cylinder of the steam turbine, the grinding gasket can be driven to contact the inner wall of the medium-pressure inner cylinder of the steam turbine, and at the same time, the inner wall of the medium-pressure inner cylinder of the steam turbine can be driven to be polished, so as to provide sufficiency when grinding different positions inside the medium-pressure inner cylinder of the steam turbine.

Description

Technical Field

[0001] The utility model relates to the technical field of processing equipment for steam turbines, in particular to a grinding device for processing a medium-pressure inner cylinder of a steam turbine. Background Art

[0002] A steam turbine, also known as a steam turbine engine, is a rotary steam power device. High-temperature and high-pressure steam passes through a fixed nozzle and becomes an accelerated airflow, which is then sprayed onto the blades, causing the rotor with the blades to rotate and perform work externally. Steam turbines are the main equipment in modern thermal power plants and are also used in the metallurgical industry, chemical industry, and ship power devices. Steam turbines contain an inner cylinder. When the inner cylinder is produced, the inner cylinder contains burrs, so the burrs contained in the inner cylinder need to be polished.

[0003] In the grinding device, usually an operator enters the inside of the grinding device, and then manually drives the grinding device to grind the inner wall of the inner cylinder. However, due to the different diameters of the inner wall of the inner cylinder, after the grinding device moves to the inside of the inner bar, the grinding device cannot drive the grinding disc to contact the inner wall of the inner bar according to the different diameters of the inner wall of the inner bar. Therefore, the grinding device cannot grind different diameter parts of the inner wall of the inner cylinder. For this reason, we propose a grinding device for processing the medium-pressure inner cylinder of a steam turbine. Utility Model Content

[0004] In view of the shortcomings of the existing grinding devices for processing the medium-pressure inner cylinder of a steam turbine, the utility model provides a grinding device for processing the medium-pressure inner cylinder of a steam turbine, which has the advantage of improving the sufficiency of the grinding device when grinding different positions inside the inner cylinder, thereby solving the problems raised in the above-mentioned background technology.

[0005] The utility model provides the following technical solution: a grinding device for processing a medium-pressure inner cylinder of a steam turbine, comprising a motor, a rotating column is installed at the front end of the motor, a first positioning sleeve is movably sleeved internally at the rear end of the rotating column, a threaded sleeve is movably sleeved externally at the first positioning sleeve, a supporting column is fixedly connected to the front end of the supporting column, a front baffle is fixedly connected to the end of the supporting column, an inclined rod is sleeved externally at the front baffle, an arc spring is installed at the end of the inclined rod, a connecting plate is fixedly connected to the upper part of the arc spring, a second positioning sleeve is installed at one end of another group of the inclined rods, a spring is installed at the upper end of the connecting plate, a grinding pad mounting plate is installed at the end of the spring, a grinding pad is adhesively mounted on the outside of the grinding pad mounting plate.

[0006] Preferably, a slide groove is installed on the outside of one end of the rotating column, and the middle part of the first positioning sleeve is movably sleeved inside the slide groove.

[0007] Preferably, the exterior of the first positioning sleeve is circular, and the inner side of the threaded sleeve is threadedly connected to the exterior of the motor.

[0008] Preferably, the arc spring is semicircular, both ends of the arc spring are movably sleeved with inclined rods, and the second positioning sleeve is fixedly connected to the outside of the motor.

[0009] Preferably, a limit plate is installed on the outside of the front baffle, and the limit plate is movably sleeved inside the front end of the rotating column.

[0010] Preferably, the connecting plate is maintained in parallel with the outer portion of the rotating column, and the spring is installed between the grinding pad mounting plate and the connecting plate.

[0011] Preferably, the grinding pad mounting plates are arranged at equal intervals outside the rotating column, and a grinding pad is mounted outside the grinding pad.

[0012] Compared with the existing grinding device for processing the intermediate pressure inner cylinder of the steam turbine, the utility model has the following beneficial effects:

[0013] 1. The grinding device for processing the medium-pressure inner cylinder of the steam turbine drives the positioning sleeve to move inward by rotating the threaded sleeve, and then drives the inclined rod to move inward. At the same time, the two groups of inclined rods drive the middle part of the arc spring to move outward. At the same time, the arc spring drives the grinding gasket to diffuse outward. Then, according to the different diameters of the inner wall of the medium-pressure inner cylinder of the steam turbine, the grinding gasket can be driven to contact the inner wall of the medium-pressure inner cylinder of the steam turbine, and the inner wall of the medium-pressure inner cylinder of the steam turbine can be driven to be ground, thereby providing sufficiency when grinding different positions inside the medium-pressure inner cylinder of the steam turbine.

[0014] 2. The grinding device for processing the medium-pressure inner cylinder of the steam turbine has a spring installed between the connecting plate and the grinding gasket mounting plate. The spring provides elastic kinetic energy to the outside of the grinding gasket mounting plate. At the same time, the grinding gasket mounting plate can grind the inner wall of the medium-pressure inner cylinder of the steam turbine according to the different curvatures of the inner wall of the medium-pressure inner cylinder of the steam turbine. When the grinding gasket is kept grinding the inner wall of the medium-pressure inner cylinder of the steam turbine, the grinding can be performed according to the different diameters of the inner wall of the medium-pressure inner cylinder of the steam turbine. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0016] Figure 2 The utility model lacks a schematic diagram of the rotating column structure;

[0017] Figure 3 This is a schematic diagram of the cross-sectional structure of the main body of the utility model;

[0018] Figure 4 This is a schematic diagram of the side cross-sectional structure of the main body of the utility model;

[0019] Figure 5 It is a schematic diagram of the enlarged structure of point A of the utility model.

[0020] In the figure: 1. motor; 2. rotating column; 3. first positioning sleeve; 4. threaded sleeve; 5. support column; 6. front baffle; 7. inclined rod; 8. arc spring; 9. connecting plate; 10. second positioning sleeve; 11. spring; 12. grinding gasket mounting plate; 13. grinding gasket. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 A grinding device for processing a medium-pressure inner cylinder of a steam turbine comprises a motor 1, a rotating column 2 is installed at the front end of the motor 1, when the rotating column 2 rotates, the rotating column 2 drives a grinding pad 13 to grind the inner wall of the medium-pressure inner cylinder of the steam turbine, a first positioning sleeve 3 is movably sleeved inside the rear end of the rotating column 2, a threaded sleeve 4 is movably sleeved outside the first positioning sleeve 3, the threaded sleeve 4 is rotated, and the threaded sleeve 4 drives the position of a front baffle 6 to be adjusted, a support column 5 is fixedly connected to the front end of the first positioning sleeve 3, a front baffle 6 is fixedly connected to the end of the support column 5, an inclined rod 7 is sleeved outside the front baffle 6, an arc spring 8 is installed at the end of the inclined rod 7, and the upper end of the arc spring 8 A connecting plate 9 is fixedly connected to the part. When the inclined rod 7 moves inward, the grinding gasket 13 can be pushed to contact the inner wall of the medium-pressure inner cylinder of the steam turbine. A second positioning sleeve 10 is installed at one end of the other group of inclined rods 7. A spring 11 is installed at the upper end of the connecting plate 9. The spring 11 drives the grinding gasket mounting plate 12 to move outward to provide elastic power, and then the grinding gasket 13 can be controlled to fit the inner wall of the medium-pressure inner cylinder of the steam turbine. A grinding gasket mounting plate 12 is installed at the end of the spring 11, and a grinding gasket 13 is bonded and installed on the outside of the grinding gasket mounting plate 12. When the grinding gasket 13 rotates, the grinding gasket 13 can grind the inner wall of the medium-pressure inner cylinder of the steam turbine.

[0023] See also Figure 2A slide groove is installed on the outside of one end of the rotating column 2, and the middle part of the first positioning sleeve 3 is movably sleeved inside the slide groove. A slide groove is opened at one end of the rotating column 2, and the first positioning sleeve 3 is movably sleeved inside the slide groove, and then the slide groove drives the first positioning sleeve 3 to provide activity space.

[0024] See also Figure 1 and Figure 2 The outside of the first positioning sleeve 3 is circular, and the inner side of the threaded sleeve 4 is threadedly connected to the outside of the motor 1. By rotating the threaded sleeve 4, threaded movement is performed between the threaded sleeve 4 and the rotating column 2, and then the threaded sleeve 4 can drive the first positioning sleeve 3 to move outside the rotating column 2. At the same time, when the threaded sleeve 4 drives the position of the first positioning sleeve 3 to be adjusted, it provides stability when driving the support column 5 to adjust the position inside the rotating column 2.

[0025] See also Figure 5 The arc spring 8 is semicircular, and both ends of the arc spring 8 are movably sleeved with an inclined rod 7. The second positioning sleeve 10 is fixedly connected to the outside of the motor 1 and is installed on the outside of the two groups of inclined rods 7 through the arc spring 8. At the same time, the front baffle 6 drives a group of inclined rods 7 to move inward, and then drives the arc spring 8 to push outward, and ensures that the direction of the connecting plate 9 continues to remain parallel to the outside of the rotating column 2. At the same time, after the arc spring 8 extends outward, when the grinding gasket 13 moves outward, the grinding gasket 13 can contact the inner wall of the medium-pressure inner cylinder of the turbine with different diameters, and at the same time improves the flexibility when grinding the inner wall of the medium-pressure inner cylinder of the turbine.

[0026] See also Figure 5 A limit plate is installed on the outside of the front baffle 6, and the limit plate is movably sleeved inside the front end of the rotating column 2. The limit plate is installed on the outside of the front baffle 6, and the limit plate is movably sleeved inside the slide groove opened at the front end of the rotating column 2. Then the front baffle 6 drives the inclined rod 7 to provide stability when the external position of the rotating column 2 is adjusted.

[0027] See also Figure 5 The connecting plate 9 is kept parallel to the outside of the rotating column 2, and the spring 11 is installed between the grinding gasket mounting plate 12 and the connecting plate 9. The connecting plate 9 is kept parallel to the outside of the rotating column 2. Then, during the process of the connecting plate 9 expanding outward, the grinding gasket 13 can be continuously kept in contact with the inside of the medium-pressure inner cylinder of the turbine, thereby improving the adequacy of the grinding.

[0028] See also Figure 5The grinding gasket mounting plates 12 are arranged at equal intervals on the outside of the rotating column 2, and grinding pads are installed on the outside of the grinding gasket 13. The grinding gasket mounting plates 12 are arranged at equal intervals on the outside of the rotating column 2. At the same time, a spring 11 is installed between the connecting plate 9 and the grinding gasket mounting plate 12. The spring 11 increases the thrust of the grinding gasket mounting plate 12 toward the outside. At the same time, when the grinding gasket 13 contacts and grinds the recessed area of ​​the inner wall of the medium-pressure inner cylinder of the turbine, the grinding gasket mounting plate 12 expands and contracts inward or outward, which can drive the grinding gasket 13 to fit the inner wall of the medium-pressure inner cylinder of the turbine, and at the same time, the inner wall of the medium-pressure inner cylinder of the turbine is polished.

[0029] Working principle: When in use, move the front end of the rotating column 2 to the inside of the medium-pressure inner cylinder of the turbine, and at the same time, rotate the threaded sleeve 4 according to the different diameters of the inner wall of the medium-pressure inner cylinder of the turbine. The threaded sleeve 4 drives the front baffle 6 to the rear end, and at the same time, the inclined rod 7 drives the arc spring 8 to squeeze inward, and at the same time, the arc spring 8 drives the grinding gasket mounting plate 12 to lift outward, and at the same time, the outer wall of the grinding gasket 13 is in a fit state with the inner wall of the medium-pressure inner cylinder of the turbine, and at the same time, the grinding gasket 13 can grind the inner walls of the medium-pressure inner cylinder of the turbine with different diameters, and at the same time, push the motor 1 to the front end and start the motor 1, the motor 1 drives the grinding gasket 13 to rotate, and at the same time, the grinding gasket 13 can grind the inner wall of the medium-pressure inner cylinder of the turbine.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A grinding device for processing a medium-pressure inner cylinder of a steam turbine, comprising a motor (1), a rotating column (2) being mounted at the front end of the motor (1), a first positioning sleeve (3) being movably sleeved inside the rear end of the rotating column (2), a threaded sleeve (4) being movably sleeved outside the first positioning sleeve (3), a supporting column (5) being fixedly connected to the front end of the first positioning sleeve (3), a front baffle (6) being fixedly connected to the end of the supporting column (5), an inclined rod (7) being sleeved outside the front baffle (6), an arc spring (8) being mounted at the end of the inclined rod (7), a connecting plate (9) being fixedly connected to the upper part of the arc spring (8), characterized in that: A second positioning sleeve (10) is installed at one end of the other group of inclined rods (7), a spring (11) is installed at the upper end of the connecting plate (9), a grinding gasket mounting plate (12) is installed at the end of the spring (11), and a grinding gasket (13) is bonded and installed on the outside of the grinding gasket mounting plate (12).

2. A grinding device for processing a medium-pressure inner cylinder of a steam turbine according to claim 1, characterized in that: A sliding groove is installed on the outside of one end of the rotating column (2), and the middle part of the first positioning sleeve (3) is movably sleeved inside the sliding groove.

3. A grinding device for processing a medium-pressure inner cylinder of a steam turbine according to claim 1, characterized in that: The exterior of the first positioning sleeve (3) is circular, and the inner side of the threaded sleeve (4) is threadedly connected to the exterior of the motor (1).

4. A grinding device for processing a medium-pressure inner cylinder of a steam turbine according to claim 1, characterized in that: The arc spring (8) is semicircular in shape, and both ends of the arc spring (8) are movably sleeved with an inclined rod (7), and the second positioning sleeve (10) is fixedly connected to the outside of the motor (1).

5. A grinding device for processing a medium-pressure inner cylinder of a steam turbine according to claim 1, characterized in that: A limit plate is installed on the outside of the front baffle (6), and the limit plate is movably sleeved inside the front end of the rotating column (2).

6. A grinding device for processing a medium-pressure inner cylinder of a steam turbine according to claim 1, characterized in that: The connecting plate (9) is maintained in a parallel state with the outside of the rotating column (2), and the spring (11) is installed between the grinding pad mounting plate (12) and the connecting plate (9).

7. A grinding device for processing a medium-pressure inner cylinder of a steam turbine according to claim 1, characterized in that: The grinding pad mounting plates (12) are arranged at equal intervals outside the rotating column (2), and a grinding pad is mounted outside the grinding pad (13).

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