Steam turbine rotor bearing bush grinder

Abstract

The utility model discloses a steam turbine rotor bearing bush grinder, relates to the technical field of steam turbines, and aims to solve the problems that in the background technology, a bearing bush cannot be fixed, the bearing bush rotates along with a grinding seat, the grinding seat cannot grind the inner wall of the bearing bush, the grinding efficiency is low, chippings and dust generated during grinding cannot be collected, and the grinding efficiency is low. According to the scheme, the dust removal device comprises an operation table, a sealing mechanism is arranged at the top of the operation table, the sealing mechanism comprises a sealing frame connected to the outer wall of the top of the operation table through bolts and a top cover connected to the outer wall of the top of the sealing frame through bolts, and a grinding mechanism is arranged on the operation table. According to the bearing bush grinding device, a bearing bush can be fixed when the inner wall of the bearing bush is ground, the bearing bush is prevented from rotating along with a grinding rod, the grinding efficiency is improved, chippings and dust generated during grinding can be collected, the dust is prevented from drifting in external air, and the environmental protection property is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of steam turbines, in particular to a turbine rotor bearing bush grinder. Background Art

[0002] A steam turbine, also known as a steam turbine engine, is a rotary steam-powered device. High-temperature and high-pressure steam passes through a fixed nozzle to become an accelerated airflow and is then sprayed onto the blades, causing the rotor with the blade rows to rotate while performing work externally. The bearing is the part where the sliding bearing and the journal contact. It is in the shape of a semi-cylindrical tile, very smooth, and generally made of wear-resistant materials such as bronze and anti-friction alloys.

[0003] After searching, a Chinese patent (application number is "202320722384.2") discloses a "steam turbine rotor bearing grinder". The grinder includes a base, a grinding seat, two bearings, two adjustment plates and two grinding assemblies. The grinding seat is rotatably mounted on the top of the base, and the two bearings are arranged on the base. The grinding seat contacts the two bearings. The top of the base is rotatably connected with a rotating seat, and the rotating seat sleeve is arranged on the grinding seat. The two adjustment plates are slidably mounted on the rotating seat, and the grinding assembly is arranged on the corresponding adjustment plate; the grinding assembly includes two mounting plates, two grinding rollers and a stepping motor. However, the above grinder has the following problems during use:

[0004] 1. When grinding the bearing, the bearing cannot be fixed, causing the bearing to rotate with the grinding seat, resulting in the grinding seat being unable to grind the inner wall of the bearing, resulting in low grinding efficiency;

[0005] 2. When grinding the bearing shell, the debris and dust generated during grinding cannot be collected, causing the dust to float in the outside air, which is poor in environmental protection. Utility Model Content

[0006] The utility model provides a turbine rotor bearing grinder, which solves the problem that the bearing cannot be fixed in the reference document, causing the bearing to rotate with the grinding seat, resulting in the grinding seat being unable to grind the inner wall of the bearing, low grinding efficiency, and unable to collect debris and dust generated during grinding, causing the dust to float in the outside air, resulting in poor environmental protection.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A turbine rotor bearing grinder comprises an operating table, a sealing mechanism is provided on the top of the operating table, the sealing mechanism comprises a sealing frame connected to the outer wall of the top of the operating table by bolts and a top cover connected to the outer wall of the top of the sealing frame by bolts, a grinding mechanism is provided on the operating table, the grinding mechanism comprises a grinding motor connected to the inner wall of the top of the operating table by bolts and a grinding rod whose outer diameter is matched with the inner diameter of the bearing, two fixing components are provided in the sealing frame, the fixing components comprise an adjusting cylinder connected to the outer wall of one side of the sealing frame by bolts, an extrusion block connected to the outer wall of one end of the piston rod of the adjusting cylinder by bolts, a support block and two limit plates respectively fixed on the outer walls on both sides of the extrusion block, a dust collecting mechanism is provided in the operating table, the dust collecting mechanism comprises a dust collecting box connected to the inner wall of one side of the operating table by bolts, a filter screen embedded in the inner wall of the dust collecting box and a fan connected to the outer wall of one side of the dust collecting box by bolts.

[0009] Preferably, a plurality of limiting rods are provided in the sealing frame, and two ends of the plurality of limiting rods are respectively fixed on the inner walls on both sides of the sealing frame.

[0010] Preferably, a connecting piece is connected to the outer wall of the top end of the grinding motor through a coupling, and the grinding rod is connected to the connecting piece through bolts. A fixing rod is fixed on the outer wall of the top end of the grinding rod, and the fixing rod penetrates and is rotatably installed on the top outer wall of the top cover.

[0011] Preferably, an extrusion groove with an inner diameter matching the outer diameter of the bearing shell is opened on the outer wall of one side of the extrusion block, and an installation groove is opened on the outer wall of the bottom of the extrusion block. The support block is connected to the installation groove by bolts, and the two limit plates are respectively slidably installed on the outer walls of several limit rods.

[0012] Through the above scheme, the movement of the cylinder piston rod is adjusted to drive the extrusion block and the limit block to move along the limit rod. The distance between the extrusion groove on the extrusion block and the grinding rod is convenient for the bearing to be placed in, and the bearings are stacked on the support block in sequence. Then the cylinder piston rod is adjusted to continue to move, so that the two half bearings are combined into a complete bearing and contact with the outer wall of the grinding rod. Then the output shaft of the grinding motor rotates to drive the connecting piece, grinding rod and fixed rod to rotate, and the grinding rod grinds the inner walls of multiple bearings.

[0013] Preferably, fixing plates are fixedly provided on both side outer walls of the top of the operating table, and both sides of the two adjusting cylinders are respectively connected to the outer walls on one side of the two fixing plates by bolts.

[0014] Preferably, a collecting pipe is fixedly provided on the inner wall of one side of the dust collecting box, and one end of the collecting pipe passes through and is fixedly provided on the lower inner wall of one side of the sealing frame.

[0015] Through the above scheme, the air in the dust box and the sealing frame is discharged by the operation of the fan, so that the debris and dust generated during grinding are sucked into the dust box, and some debris remains in the space formed by the operating table and the sealing frame.

[0016] The beneficial effects of the utility model are:

[0017] 1. A grinding mechanism and a fixing assembly are provided. The movement of the cylinder piston rod is adjusted to drive the extrusion block and the limit block to move along the limit rod. The distance between the extrusion groove on the extrusion block and the grinding rod is convenient for placing the bearing shell. The bearing shells are stacked on the support block in sequence. Then the cylinder piston rod is adjusted to continue to move so that the two half bearing shells are combined into a complete bearing shell and contact the outer wall of the grinding rod. Then the output shaft of the grinding motor rotates to drive the connecting piece, the grinding rod and the fixing rod to rotate. The grinding rod grinds the inner walls of multiple bearing shells. The bearing shell can be fixed when the inner wall of the bearing shell is ground to prevent the bearing shell from rotating with the grinding rod, thereby improving the grinding efficiency.

[0018] 2. A sealing mechanism and a dust collecting mechanism are provided. When the fan runs, the air in the dust box and the sealing frame is discharged, so that the debris and dust generated during grinding are sucked into the dust box. At the same time, some debris remains in the space formed by the operating table and the sealing frame. The debris and dust generated during grinding can be collected to prevent the dust from floating in the outside air, thereby improving environmental protection.

[0019] In summary, the utility model can fix the bearing when grinding the inner wall of the bearing to prevent the bearing from rotating with the grinding rod, thereby improving the grinding efficiency, and can collect the debris and dust generated during grinding to prevent the dust from floating in the outside air, thereby improving environmental protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The utility model is a schematic diagram of the main stereoscopic structure of a turbine rotor bearing grinder proposed by the utility model.

[0021] Figure 2 The utility model is a schematic diagram of the main cross-sectional structure of a turbine rotor bearing grinder proposed by the utility model.

[0022] Figure 3 The utility model is a schematic diagram of the front cross-sectional structure of a sealing mechanism of a turbine rotor bearing grinder.

[0023] Figure 4 The utility model is a schematic diagram of the front cross-sectional structure of a grinding mechanism of a turbine rotor bearing grinder.

[0024] Figure 5 The utility model provides a schematic diagram of the front cross-sectional structure of a fixing assembly and a fixing plate of a turbine rotor bearing grinder.

[0025] Figure 6 The utility model is a schematic diagram of the main cross-sectional structure of a dust collecting mechanism of a turbine rotor bearing grinder.

[0026] In the figure: 1. operating table; 2. sealing mechanism; 201. sealing frame; 202. top cover; 203. limiting rod; 3. grinding mechanism; 301. grinding motor; 302. connecting piece; 303. grinding rod; 304. fixing rod; 4. fixing assembly; 401. adjusting cylinder; 402. extrusion block; 403. supporting block; 404. limiting plate; 5. fixing plate; 6. dust collecting mechanism; 601. dust collecting box; 602. collecting pipe; 603. filter screen; 604. fan. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0028] Example 1, reference Figure 1-3 and Figure 6 A turbine rotor bearing grinder comprises an operating table 1, a sealing mechanism 2 is provided on the top of the operating table 1, the sealing mechanism 2 comprises a sealing frame 201 connected to the outer wall of the top of the operating table 1 by bolts and a top cover 202 connected to the outer wall of the top of the sealing frame 201 by bolts, an air inlet is opened on the outer wall of one side of the sealing frame 201, a plurality of limiting rods 203 are provided in the sealing frame 201, and the two ends of the plurality of limiting rods 203 are respectively fixed on the inner walls of both sides of the sealing frame 201, a dust collecting mechanism 6 is provided in the operating table 1, the dust collecting mechanism 6 comprises a dust collecting box 601 connected to the inner wall of one side of the operating table 1 by bolts, a filter screen 603 embedded on the inner wall of the dust collecting box 601 and a fan 604 connected to the outer wall of one side of the dust collecting box 601 by bolts, a collecting pipe 602 is fixed on the inner wall of one side of the dust collecting box 601, and one end of the collecting pipe 602 passes through and is fixed on the lower inner wall of one side of the sealing frame 201.

[0029] Example 2, reference Figure 1-2 and Figure 4-5A turbine rotor bearing grinder also includes a grinding mechanism 3, which includes a grinding motor 301 connected to the inner wall of the top of the operating table 1 by bolts and a grinding rod 303 whose outer diameter is adapted to the inner diameter of the bearing. A connecting piece 302 is connected to the outer wall of the top of the grinding motor 301 by a coupling, and the grinding rod 303 is connected to the connecting piece 302 by bolts. A fixing rod 304 is fixed on the outer wall of the top of the grinding rod 303, and the fixing rod 304 penetrates and is rotatably installed on the outer wall of the top of the top cover 202. Two fixing components 4 are arranged in the sealing frame 201, and the fixing component 4 includes an adjusting cylinder connected to the outer wall of one side of the sealing frame 201 by bolts. 401, an extrusion block 402, a support block 403 and two limit plates 404 respectively fixed on the outer walls on both sides of the extrusion block 402 are connected to the outer wall of one end of the piston rod of the adjusting cylinder 401 by bolts, an extrusion groove with an inner diameter matching the outer diameter of the bearing bush is opened on the outer wall on one side of the extrusion block 402, an installation groove is opened on the outer wall at the bottom of the extrusion block 402, the support block 403 is connected to the installation groove by bolts, and the two limit plates 404 are respectively slidably installed on the outer walls of several limit rods 203, and fixed plates 5 are fixed on the outer walls on both sides of the top of the operating table 1, and the two sides of the two adjusting cylinders 401 are respectively connected to the outer walls on one side of the two fixed plates 5 by bolts.

[0030] Working principle: The piston rod of the adjusting cylinder 401 moves to drive the extrusion block 402 and the limit block 404 to move along the limit rod 203. The distance between the extrusion groove on the extrusion block 402 and the grinding rod 303 is convenient for the bearing to be placed in. The bearings are stacked on the support block 403 in sequence, and then the piston rod of the adjusting cylinder 401 continues to move so that the two half bearings are combined into a complete bearing and contact the outer wall of the grinding rod 303. Then the output shaft of the grinding motor 301 rotates to drive the connecting piece 302, the grinding rod 303 and the fixing rod 304 to rotate. The grinding rod 303 grinds the inner walls of multiple bearings, and the fan 604 runs to discharge the air in the dust box 601 and the sealing frame 201, so that the debris and dust generated during grinding are sucked into the dust box 601, and at the same time, some debris remains in the space formed by the operating table 1 and the sealing frame 201.

[0031] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A turbine rotor bearing grinder, comprising an operating table (1), characterized in that: The top of the operating table (1) is provided with a sealing mechanism (2), and the sealing mechanism (2) comprises a sealing frame (201) connected to the top outer wall of the operating table (1) by bolts, and a top cover (202) connected to the top outer wall of the sealing frame (201) by bolts; The operating table (1) is provided with a grinding mechanism (3), and the grinding mechanism (3) comprises a grinding motor (301) connected to the inner wall of the top of the operating table (1) by bolts, and a grinding rod (303) whose outer diameter matches the inner diameter of the bearing bush; Two fixing assemblies (4) are arranged in the sealing frame (201), and the fixing assemblies (4) include an adjusting cylinder (401) connected to the outer wall of one side of the sealing frame (201) by bolts, an extrusion block (402) connected to the outer wall of one end of the piston rod of the adjusting cylinder (401) by bolts, a supporting block (403), and two limiting plates (404) respectively fixed to the outer walls of both sides of the extrusion block (402); The operating table (1) is provided with a dust collecting mechanism (6), comprising a dust collecting box (601) connected to the inner wall of one side of the operating table (1) by means of bolts, a filter screen (603) embedded in the inner wall of the dust collecting box (601), and a fan (604) connected to the outer wall of one side of the dust collecting box (601) by means of bolts.

2. A turbine rotor bearing grinder according to claim 1, characterized in that: A plurality of limiting rods (203) are arranged in the sealing frame (201), and two ends of the plurality of limiting rods (203) are respectively fixed on the inner walls at both sides of the sealing frame (201).

3. A turbine rotor bearing grinder according to claim 1, characterized in that: The outer wall at the top end of the grinding motor (301) is connected to a connecting piece (302) via a coupling, and the grinding rod (303) is connected to the connecting piece (302) via bolts. A fixing rod (304) is fixedly arranged on the outer wall at the top end of the grinding rod (303), and the fixing rod (304) penetrates and is rotatably mounted on the outer wall at the top end of the top cover (202).

4. A turbine rotor bearing grinder according to claim 2, characterized in that: An extrusion groove with an inner diameter matching the outer diameter of the bearing shell is formed on the outer wall of one side of the extrusion block (402), and an installation groove is formed on the outer wall at the bottom of the extrusion block (402). The support block (403) is connected to the installation groove by bolts, and the two limit plates (404) are respectively slidably mounted on the outer walls of the plurality of limit rods (203).

5. The turbine rotor bearing grinder according to claim 1, characterized in that: Fixed plates (5) are fixedly provided on both side outer walls of the top of the operating table (1), and both sides of the two regulating cylinders (401) are respectively connected to the outer walls of one side of the two fixed plates (5) by bolts.

6. A turbine rotor bearing grinder according to claim 1, characterized in that: A collecting pipe (602) is fixedly arranged on the inner wall of one side of the dust collecting box (601), and one end of the collecting pipe (602) penetrates and is fixedly arranged on the lower inner wall of one side of the sealing frame (201).

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