A lifting tool for a tubular turbine rotor

Abstract

A through-flow rotor lifting tool, the upper ends of the lifting plate a and the lifting plate b are fixedly connected by two support rods, and the lower ends of the lifting plate a and the lifting plate b are fixedly connected by two stud bolts. The two stud bolts pass through the rotor bracket, and both ends of the stud bolts are fixedly connected to the lifting plate a and the lifting plate b through nuts; determine the outer diameter of the arc plate according to the inner diameter of the flanges at both ends of the rotor bracket, and weld them to the inner sides of the lifting plate a and the lifting plate b respectively. The support blocks are symmetrically welded to the inner side of the lifting plate b on the left and right, and the reinforcing ring is welded to both ends of the lifting holes in the lifting plate a and the lifting plate b. This lifting tool solves the difficulties brought about by the need to remove multiple magnetic poles and connecting wires before lifting the rotor and then reinstalling the removed magnetic poles and connecting wires after the rotor is installed, and solves the problem that the connecting wires cannot be lifted after installation because they are higher than the rotor bracket. This lifting tool is simple to manufacture, has a compact structure, is convenient to install, and lifts the rotor firmly and smoothly. It has strong practicability.

Description

Technical Field

[0001] The present invention relates to the field of manufacturing of tubular hydro-generators, and particularly to a rotor lifting tool. Background Art

[0002] Currently, in tubular hydro-generators, for the rotor lifting tool, usually 3 - 4 magnetic poles and connecting wires are removed, and a mating lifting tool is installed using the holes for installing magnetic poles on the yoke ring. After hoisting the rotor, the removed magnetic poles and connecting wires are reinstalled. Moreover, after the connecting wires are installed, they are higher than the rotor bracket. This tool is applicable to larger-sized rotors, but not to smaller-sized rotors with a larger number of magnetic poles. Due to the small size of the rotor, it is difficult to install the tool. Also, because of the large number of magnetic poles, a large number of magnetic poles and connecting wires need to be removed during hoisting. Reinstalling the removed magnetic poles and connecting wires after hoisting the rotor brings many difficulties. Summary of the Invention

[0003] Aiming at the above problems, the purpose of the present invention is to provide a tubular rotor lifting tool that does not require removing magnetic poles and connecting wires.

[0004] The technical solution adopted by the present invention to solve the above technical problems is as follows:

[0005] A tubular rotor lifting tool, comprising: lifting plate a, lifting plate b, support plate a, support plate b, two support blocks, two support rods, two stud bolts, several bolts, several nuts, and a reinforcing ring; characterized in that: the upper ends of the lifting plate a and the lifting plate b of the tubular rotor lifting tool are fixedly connected by two support rods, the lower ends of the lifting plate a and the lifting plate b are fixedly connected by two stud bolts, the two stud bolts pass through the rotor bracket, and both ends of the stud bolts are fixedly connected to the lifting plate a and the lifting plate b by nuts; the support plate a is fixedly welded to the inner side of the lifting plate a, the support plate b and the two support blocks are fixedly welded to the inner side of the lifting plate b, and the reinforcing ring is welded at both ends of the lifting holes in the lifting plate a and the lifting plate b. Then, the lifting plate a, the lifting plate b, the two support rods, the two stud bolts, and the rotor bracket are assembled into one body with bolts and nuts to complete the lifting of the rotor.

[0006] Further, the lifting plate a is of a sector structure, with a lifting hole opened at the center position of the upper part of the lifting plate a, two holes for installing support rods symmetrically opened on the left and right of the lifting hole with the same radius as the lifting hole, several holes for installing with the yoke ring opened at the middle part of the lifting plate a according to the position of the yoke ring of the rotor bracket, and two holes for installing stud bolts opened at the symmetrical center line of the lower part of the lifting plate a.

[0007] Further, the lifting plate b is of a sector structure, with a lifting hole opened at the center position of the upper part of the lifting plate b. Two holes for installing support rods are symmetrically opened on the left and right of the lifting hole with the same radius as the lifting hole. Two holes for installing double-headed studs are opened on the symmetrical center line of the lower part of the lifting plate b.

[0008] Further, both the support plate a and the support plate b are arc-shaped and are respectively welded to the inner sides of the lifting plate a and the lifting plate b.

[0009] Further, the support block is square and is symmetrically welded to the inner side of the lifting plate b in the left and right directions.

[0010] Further, the support rod is a welded structure of a round plate with screw holes in the middle at both ends and a steel pipe.

[0011] Further, the double-headed stud is processed with threads of sufficient length at both ends.

[0012] Further, the inner hole of the reinforcing ring corresponds to the lifting holes of the lifting plate a and the lifting plate b, and the outer side is of a circular structure and is welded to both ends of the lifting holes of the lifting plate a and the lifting plate b.

[0013] The advantages of the present invention are as follows:

[0014] The present invention solves the difficulties brought about by the need to remove multiple magnetic poles and connecting wires before lifting the rotor and then reinstall the removed magnetic poles and connecting wires after the rotor is installed. The welding of the two support blocks and the lifting plate b solves the problem that the connecting wires cannot be lifted after being installed and protruding above the rotor bracket. This lifting tool is simple to manufacture, has a compact structure, is convenient to install, and can lift the rotor firmly and stably. It has strong practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 It is a structural and lifting schematic diagram of a tubular turbine rotor lifting tool of the present invention.

[0017] Figure 2 For the present invention Figure 1 View A.

[0018] Figure 3 For the present invention Figure 1 View B - B.

[0019] Figure 4 It is a view of the support rod of the present invention.

[0020] Figure 5 This is the view of the stud of the present invention.

[0021] Wherein: 1. Lifting plate a; 2. Lifting plate b; 3. Reinforcing ring; 4. Support rod; 5. Support plate a; 6. Support block; 7. Support plate b; 8. Stud; 9. Bolt; 10. Nut; Specific embodiments

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0023] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "middle", "lower", "left", "right", "symmetric", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0024] As Figures 1-5 shown, a bulb turbine rotor lifting tool, the bulb turbine rotor lifting tool includes: lifting plate a, lifting plate b, support plate a, support plate b, two support blocks, two support rods, two studs and a plurality of bolts, nuts, reinforcing rings, etc. It is characterized in that: for the rotor lifting tool, the support plate a is first welded to the inner side of the lifting plate a, the support plate b and the two support blocks are welded to the inner side of the lifting plate b, the reinforcing ring is welded to both ends of the lifting holes in the lifting plate a and the lifting plate b, and then the lifting plate a, the lifting plate b, the two support rods, the two studs are combined with the rotor bracket into one body with bolts and nuts to complete the lifting of the rotor.

[0025] The lifting plate a is a fan-shaped structure, a lifting hole is opened at the center position of the upper part of the lifting plate a, two holes for installing the support rods are symmetrically opened at the left and right of the lifting hole with the same radius as the lifting hole, a plurality of holes for installing with the yoke ring are opened in the middle of the lifting plate a according to the position of the yoke ring of the rotor bracket, and two holes for installing the studs are opened at the symmetric center line of the lower part of the lifting plate a.

[0026] The lifting plate b is a sector structure. There is a lifting hole at the center position of the upper part of the lifting plate b. Two holes for installing support rods are symmetrically opened on the left and right of the lifting hole with the same radius as the lifting hole. Two holes for installing double-headed studs are opened on the symmetrical center line of the lower part of the lifting plate b.

[0027] Both the support plate a and the support plate b are arc-shaped. The outer diameter of the arc plate is determined according to the inner diameter of the flanges at both ends of the rotor bracket, and they are respectively welded to the inner sides of the lifting plate a and the lifting plate b.

[0028] The support block is square, and its height is determined according to the required height after the installation of the magnetic pole connection wires. It is symmetrically welded to the positions of the lower flange of the rotor bracket on the inner side of the lifting plate b in the left and right directions.

[0029] The support rod is a welded structure of a round plate with screw holes in the middle at both ends and a steel pipe.

[0030] The double-headed stud is processed with threads of sufficient length at both ends.

[0031] The reinforcing ring, characterized in that: the inner hole of the reinforcing ring corresponds to the lifting holes of the lifting plate a and the lifting plate b, and the outer side is a circular structure, and it is welded to both ends of the lifting holes of the lifting plate a and the lifting plate b.

[0032] Working mode:

[0033] During work, first install the lifting plate a 1 (the support plate a 5 has been welded to the lifting plate a) on the rotor bracket yoke ring with bolts 9. One end of two support rods 4 is installed on the lifting plate a 1 with bolts 9, and the other ends of the two support rods 4 are installed at an interval from the rotor with bolts 9 and the lifting plate b 2 (the support plate b 7 and the support block 6 have been welded to the lifting plate b). Then pass two double-headed studs 8 through the lifting plate a 1 and the lifting plate b 2 (at an interval from the rotor bracket) and fix them with nuts 10. At this time, the rotor lifting tool is installed. Connect the lifting ropes to the lifting holes on the lifting plate a 1 and the lifting plate b 2 to lift the rotor.

[0034] This lifting tool solves the difficulties brought about by the need to remove multiple magnetic poles and connection wires before lifting the rotor and reinstalling the removed magnetic poles and connection wires after the rotor is installed. The welding of the two support blocks 6 and the lifting plate b 2 solves the problem that the connection wires cannot be lifted after installation because they are higher than the rotor bracket. This lifting tool is simple to manufacture, has a compact structure, is convenient to install, and can lift the rotor firmly and stably. It has strong practicability.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A lifting tool for a tubular turbine rotor, comprising: a lifting plate a, a lifting plate b, a support plate a, a support plate b, two support blocks, two support rods, two stud bolts, a number of bolts, a number of nuts, and a reinforcing ring; characterized in that: the upper ends of the lifting plate a and the lifting plate b are fixedly connected by two support rods, the lower ends of the lifting plate a and the lifting plate b are fixedly connected by two stud bolts, the two stud bolts pass through the rotor bracket, and both ends of the stud bolts are fixedly connected to the lifting plate a and the lifting plate b by nuts; the support plate a is welded and fixed to the inner side of the lifting plate a, and the support plate b and the two support blocks are welded and fixed to the inner side of the lifting plate b; the lifting plate a is of a fan-shaped structure, a lifting hole is opened at the center position of the upper part of the lifting plate a, two holes for installing support rods are symmetrically opened at the same radius on the left and right of the lifting hole, a plurality of holes for installing with the yoke ring are opened in the middle part of the lifting plate a according to the position of the yoke ring of the rotor bracket, and two holes for installing stud bolts are opened on the symmetrical center line of the lower part of the lifting plate a; the lifting plate b is of a fan-shaped structure, a lifting hole is opened at the center position of the upper part of the lifting plate b, two holes for installing support rods are symmetrically opened at the same radius on the left and right of the lifting hole, and two holes for installing stud bolts are opened on the symmetrical center line of the lower part of the lifting plate b; both the support plate a and the support plate b are arc-shaped, the outer diameter of the arc plate is determined according to the inner diameter of the flanges at both ends of the rotor bracket, and they are respectively welded to the inner sides of the lifting plate a and the lifting plate b.

2. The lifting tool for a tubular turbine rotor according to claim 1, characterized in that: the support block is square, and the height is determined according to the required height after the installation of the pole connection line, and it is welded to the positions of the lower flanges of the rotor bracket on the inner side of the lifting plate b in left and right.

3. The lifting tool for a tubular turbine rotor according to claim 1, characterized in that: the support rod is a welded structure of a round plate with screw holes in the middle at both ends and a steel pipe.

4. The lifting tool for a tubular turbine rotor according to claim 1, characterized in that: the stud bolt is processed with sufficient length threads at both ends.

5. The lifting tool for a tubular turbine rotor according to claim 1, characterized in that: the inner hole of the reinforcing ring corresponds to the lifting holes of the lifting plate a and the lifting plate b, the outer side is of a circular structure, and it is welded to both ends of the lifting holes of the lifting plate a and the lifting plate b.

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