Turbine coupling reaming device

Abstract

The utility model discloses a reaming device for a coupling of a steam turbine, and belongs to the field of machining and assembling. A reaming device for a steam turbine coupler comprises an electric boosting wrench, a torque amplifier, a clamping sleeve and a reamer. The clamping sleeve comprises an upper clamping sleeve body and a lower clamping sleeve body, a lining used for positioning the reamer is arranged between the upper clamping sleeve body and the lower clamping sleeve body, and the reamer is connected with the electric reinforcement wrench sequentially through the clamping sleeve body and the torque amplifier. The lower clamping sleeve is arranged on the adjusting base plate, the adjusting base plate is arranged on the upper half steel belt, and the upper half steel belt and the lower half steel belt are arranged on a shaft body of the coupler in a sleeved mode and are fastened through matching of bolts and nuts. The device solves the problems of difficulty in centering and poor precision of manual reaming of the coupler on the assembly site of a steam turbine unit, the device is used for reaming and accurate in hole position, cylindricity meets the requirements of drawings, and the device is convenient to clamp, simple to operate and high in practicability.

Description

Technical Field

[0001] The utility model relates to the field of mechanical processing and assembly, in particular to a reaming device for a steam turbine coupling. Background Art

[0002] When installing the turbine coupling, it is necessary to perform on-site reaming. When reaming manually, it is difficult to align the holes, and an extended sleeve needs to be used. The reamer is prone to deflection during the reaming process, and the holes reamed out are often eccentric, elliptical, etc., with poor accuracy, which makes it difficult to install the positioning connecting bolts and cannot meet the clearance required by the drawings, seriously affecting the operating life of the unit.

[0003] Therefore, there is an urgent need for a coupling reaming device that is easy to align and can ensure reaming accuracy. Utility Model Content

[0004] The purpose of the present invention is to provide a device that can be used for coupling reaming at the unit assembly site. The device can replace pure manual reaming at the assembly site, and the device is easy to align, greatly improves the reaming accuracy, saves manpower, and improves processing efficiency.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A steam turbine coupling reaming device comprises an electric force-boosting wrench, a torque amplifier, a jacket and a reamer; the jacket comprises an upper jacket and a lower jacket, a bushing for positioning the reamer is arranged between the upper jacket and the lower jacket, and the reamer is connected to the electric force-boosting wrench in sequence through the jacket and the torque amplifier; the lower jacket is arranged on an adjusting pad, the adjusting pad is arranged on an upper half steel belt, the upper half steel belt and the lower half steel belt are sleeved on the shaft of the coupling, and are fastened by the cooperation of bolts and nuts.

[0007] According to a further technical solution, a rubber gasket is sleeved between the upper steel belt, the lower steel belt and the shaft body of the coupling, and the rubber gasket plays a buffering role, thereby reducing the impact force on the coupling body during the reaming process and avoiding wear.

[0008] In a further technical solution, the lower jacket is welded to the adjusting pad. Welding increases the tightness of the lower jacket and the adjusting pad, ensuring stability during the reaming process.

[0009] According to a further technical solution, the clearance between the reamer and the inner hole of the bushing is 0.01-0.03 mm, and controlling the clearance facilitates improving the precision of reaming.

[0010] According to a further technical solution, the adjusting pad is welded to the center of the outer circumferential surface of the upper half steel strip, that is, the adjusting pad is horizontal to the center dividing surface.

[0011] According to a further technical solution, a first flange is provided at the joint of the middle dividing surfaces of the upper and lower steel strips, and the flange connection is fastened by the cooperation of bolts and nuts.

[0012] According to a further technical solution, a second flange is provided at the joint of the center dividing surfaces of the upper jacket and the lower jacket, and the flange connection is fastened by the cooperation of bolts and nuts. Beneficial Effects

[0013] 1. The utility model solves the problem of difficult centering and poor precision of manual reaming of couplings at the assembly site of steam turbine units. The holes are accurately positioned and the cylindricity meets the requirements of the drawings when the device is used. The device is easy to clamp, simple to operate and highly practical.

[0014] 2. The thickness and position of the adjustment pad in the utility model can be adjusted according to the hole to be reamed of the coupling, and the reamer and the hole to be reamed are ensured to be concentric, so as to improve the accuracy of the reamed hole.

[0015] 3. The utility model is easy to center during use, can greatly improve the precision of reaming holes, save manpower and greatly improve processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model (assembled with a coupling);

[0017] Figure 2 It is a schematic diagram of the structure of the utility model (parts disassembled);

[0018] Figure 3 It is the main view of the upper jacket;

[0019] Figure 4 is a top view of the upper jacket;

[0020] Figure 5 This is the main view of the upper half of the steel strip;

[0021] Figure 6 It is a top view of the upper half of the steel strip;

[0022] Markings in the figure: 1 electric force amplifier; 2 torque amplifier; 3 jacket; 4 bushing; 5 adjustment plate; 6 upper half steel belt; 7 lower half steel belt; 8 rubber gasket; 9 reamer; 10 bolt; 11 nut; 12 coupling; 3 hole to be reamed; 14 first flange; 15 second flange; 3-1 upper jacket; 3-2 lower jacket. DETAILED DESCRIPTION

[0023] The utility model is described in detail below in conjunction with the embodiments and application examples. It should be pointed out that the embodiments are preferred implementations of the utility model, rather than limiting the scope of protection claimed for the utility model, and the application and use method of the utility model are not limited to the application examples. Example

[0024] like Figure 1-6 As shown, the reaming device of the turbine coupling 12 includes an electric force wrench 1, a torque amplifier 2, a jacket 3 and a reamer 9; the jacket 3 includes an upper jacket 3-1 and a lower jacket 3-2, a bushing 4 for positioning the reamer 9 is provided between the upper jacket 3-1 and the lower jacket 3-2, and the reamer 9 is connected to the electric force wrench 1 through the jacket 3 and the torque amplifier 2 in sequence; the lower jacket 3-2 is provided on the adjustment pad 5, the adjustment pad 5 is provided on the upper half steel belt 6, the upper half steel belt 6 and the lower half steel belt 7 are sleeved on the shaft 12-1 of the coupling 12, and are fastened by the cooperation of bolts 10 and nuts 11.

[0025] A rubber gasket 8 is sleeved between the upper steel belt 6, the lower steel belt 7 and the shaft body of the coupling 12. The rubber gasket 8 plays a buffering role, reduces the impact force on the coupling 12 body during the reaming process, and avoids wear.

[0026] The lower jacket 3-2 is welded to the adjusting pad 5. Welding increases the tightness of the lower jacket 3 and the adjusting pad 5, ensuring stability during the reaming process.

[0027] The clearance between the reamer 9 and the inner hole of the bushing 4 is 0.01-0.03 mm, and controlling the clearance facilitates improving the precision of reaming.

[0028] The adjusting pad 5 is welded to the center of the outer circumference of the upper half steel strip 6, that is, the adjusting pad 5 is horizontal with the center plane. The adjusting plate is fixed in the middle position to facilitate the centering of the reamer 9 and the hole to be reamed 13, thereby improving the reaming accuracy.

[0029] A first flange 14 is provided at the joint of the middle dividing surfaces of the upper half steel belt 6 and the lower half steel belt 7, and the flange connection is fastened by the cooperation of bolts 10 and nuts 11.

[0030] A second flange 15 is provided at the joint of the middle dividing surfaces of the upper jacket 3 - 1 and the lower jacket 3 - 2 , and the flange connection is fastened by the cooperation of the bolts 10 and the nuts 11 .

[0031] The working method of the utility model is as follows:

[0032] 1. Put the rubber gasket on the shaft of the coupling, then put the steel belt on the outer ring of the rubber gasket and fix it with screws and nuts. At the same time, adjust the position of the adjustment plate to a suitable position so that the bushing and the position of the hole to be reamed are concentric;

[0033] 2. Install the reamer, and connect its end through the bushing to the torque amplifier and electric force wrench in turn, and operate the electric force wrench to perform the reaming operation. The steel belt and coupling need to be clamped during installation, and real-time monitoring is also required during reaming to prevent loosening.

Claims

1. A steam turbine coupling reaming device, characterized in that: It includes an electric force-boosting wrench, a torque amplifier, a jacket and a reamer; the jacket includes an upper jacket and a lower jacket, a bushing for positioning the reamer is arranged between the upper jacket and the lower jacket, and the reamer is connected to the electric force-boosting wrench in sequence through the jacket and the torque amplifier; the lower jacket is arranged on an adjusting pad, the adjusting pad is arranged on an upper half steel belt, the upper half steel belt and the lower half steel belt are sleeved on the shaft of the coupling, and are fastened by the cooperation of bolts and nuts.

2. The steam turbine coupling reaming device according to claim 1, characterized in that: A rubber gasket is sleeved between the upper half steel belt, the lower half steel belt and the shaft body of the coupling.

3. The steam turbine coupling reaming device according to claim 1, characterized in that: The lower jacket is welded to the adjusting pad.

4. The steam turbine coupling reaming device according to claim 1, characterized in that: The clearance between the reamer and the inner hole of the bushing is 0.01-0.03 mm.

5. The steam turbine coupling reaming device according to claim 1, characterized in that: The adjusting pad is welded to the center of the outer circumference of the upper half steel belt.

6. The steam turbine coupling reaming device according to claim 1, characterized in that: A first flange is provided at the joint of the middle dividing surfaces of the upper half steel belt and the lower half steel belt, and the flange is connected and fastened by the cooperation of bolts and nuts.

7. The steam turbine coupling reaming device according to claim 1, characterized in that: A second flange is provided at the joint of the middle dividing surfaces of the upper jacket and the lower jacket, and the flange is connected and fastened by the cooperation of bolts and nuts.

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