CN111604803A

CN111604803A - Honing device for eliminating runout out of steam turbine rotor shaft neck

Info

Publication number: CN111604803A
Application number: CN202010536072.3A
Authority: CN
Inventors: 戚金业; 高岩; 张红星; 李俊海; 刘震
Original assignee: Harbin Turbine Co Ltd
Current assignee: Harbin Turbine Co Ltd
Priority date: 2020-06-12
Filing date: 2020-06-12
Publication date: 2020-09-01

Abstract

The invention relates to a honing device for eliminating the runout overproof of a steam turbine rotor journal, which relates to a honing device and aims to solve the problem of how to eliminate the runout overproof of the journal in a minimum amount. The invention can realize the minimum amount removal of the runout of the rotor journal, and avoids the increase of cost and period caused by matching the bearing bush as much as possible; the invention can greatly improve the surface processing quality of the shaft neck, and can reach Ra0.6. The invention has simple structure, easy production and manufacture, low cost and convenient large-scale use.

Description

Honing device for eliminating runout out of steam turbine rotor shaft neck

Technical Field

The invention relates to a honing device, in particular to a honing device for eliminating the runout out tolerance of a rotor shaft neck of a steam turbine, and relates to the technical field of machinery.

Background

The jumping of the processed rotor shaft neck caused by one or more reasons of equipment, a cutter, a workpiece state, a processing mode and the like in the processing of the steam turbine rotor directly influences the stability of a rotating shaft system of a steam turbine unit, so the jumping is eliminated, a polishing machine for grinding a large-scale horizontal lathe is of an abrasive belt structure, abrasive belt grinding is flexible processing and can only perform profiling processing, only the surface finish of the shaft diameter can be improved, the shaft neck jumping cannot be eliminated, usually, the shaft neck jumping is eliminated through minimum turning, but the turning must be processed and removed by more than 0.05mm, a cutter cannot be pressed due to the removal amount smaller than the removal amount, the processing surface finish is very poor and far cannot reach the surface processing quality required by a drawing, the tolerance of the rotor shaft neck is generally 0.05mm, the size is required to be out of tolerance, a bearing bush is assembled, the cost is increased, and the period is prolonged.

Disclosure of Invention

The invention provides a honing device for eliminating the journal run-out overproof of a steam turbine rotor, aiming at solving the problem of eliminating the journal run-out overproof in a minimum amount.

The technical scheme adopted by the invention for solving the problems is as follows:

the utility model provides a honing device for eliminating turbine rotor axle journal is run out and is out of tolerance, a honing device for eliminating turbine rotor axle journal is run out and is out of tolerance includes casing, bush, vertical pole and a plurality of clamp splice subassembly, and the casing suit is on the bush, and the inner wall at the bush is installed along the circumferencial direction to a plurality of clamp splice subassemblies, and the vertical pole rotates with the outer wall of casing to be connected.

Further, the casing is the tourus that comprises first half casing and lower half casing, and the one end of first half casing is passed through the bolt and is connected with the right-hand member of lower half casing, and the other end of first half casing is passed through the screw bolt and is connected with the left end of lower half casing, the one end of vertical pole with the screw bolt is rotated and is connected.

Furthermore, a first tubular handle and a second tubular handle are arranged at the left end of the upper half shell; the left end of the lower half shell is provided with a third tubular handle and a fourth tubular handle.

Further, the inner wall of the upper half shell is provided with a first inverted T-shaped key groove; the inner wall of the lower half shell is provided with a second inverted T-shaped key groove.

Furthermore, the bush is a ring body consisting of an upper half bush and a lower half bush, and the inner wall of the upper half bush and the inner wall of the lower half bush are both provided with notch grooves.

Further, the outer wall of the upper half bushing is connected with the inner wall of the upper half shell, and the outer wall of the lower half bushing is connected with the inner wall of the lower half shell.

Furthermore, the outer wall of the upper half bushing is provided with a first inverted T key matched with the first inverted T key groove; the outer wall of the lower half bushing is provided with a second inverted T key matched with the second inverted T key groove.

Further, every clamp splice subassembly includes rectangular block and a plurality of stop bolt, and rectangular block's one end inlays the dress and pass through the bolt fastening in the breach inslot, and rectangular block's the other end is opened useful rectangular channel, and two lateral walls of rectangular channel are equipped with a plurality of screw holes that link up, and stop bolt cartridge is in the screw hole.

Furthermore, the upper end of the outer wall of the upper half shell is provided with a connecting lifting lug.

The invention has the beneficial effects that:

1. the invention can realize the minimum amount removal of the runout of the rotor journal, and avoids the increase of cost and period caused by matching the bearing bush as much as possible;

2. the invention can greatly improve the surface processing quality of the shaft neck, and can reach Ra0.6.

3. The invention has simple structure, easy production and manufacture, low cost and convenient large-scale use.

Drawings

FIG. 1 is a front view of the present invention;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a right side view of FIG. 1;

FIG. 4 is a left side view of FIG. 1;

FIG. 5 is a cross-sectional view D-D of FIG. 1;

FIG. 6 is a cross-sectional view E-E of FIG. 1;

fig. 7 is a perspective view of the present invention.

Wherein, 1-upper half shell; 2-a lower half-shell; 3-upper half liner; 4-lower half liner; 5-a screw pin; 6-a nut; 7-a longitudinal bar; 8-bolt; 9-bolt; 10-a rectangular block; 11-a stop bolt; 12-oilstone; 13-a positioning bolt; 14-stop positioning bolt; 1-1-connecting a lifting lug; 2-1-a third tubular shank; 2-2-a fourth tubular handle; 1-2-a first tubular handle; 1-3-a second tubular handle; 3-1-first inversed T-key; 4-1-second inverted T bond; 7-1 cylinder; 7-2 tubular bodies; .

Detailed Description

The first embodiment is as follows: the embodiment is described with reference to fig. 1 to 7, and the honing device for eliminating the turbine rotor journal runout tolerance in the embodiment includes a housing, a bushing, a longitudinal rod 7, and a plurality of clamping block assemblies, wherein the housing is sleeved on the bushing, the plurality of clamping block assemblies are circumferentially mounted on the inner wall of the bushing, and the longitudinal rod 7 is rotatably connected with the outer wall of the housing.

The second embodiment is as follows: the present embodiment is described with reference to fig. 7, in which the casing is a torus composed of an upper half casing 1 and a lower half casing 2, one end of the upper half casing 1 is connected to the right end of the lower half casing 2 through a bolt, the other end of the upper half casing 1 is connected to the left end of the lower half casing 2 through a screw, and one end of a vertical rod 7 is rotatably connected to the screw 5. The longitudinal rod 7 is composed of a cylinder 7-1 and a tubular body 7-2.

Other components and connections are the same as those in the first embodiment.

The third concrete implementation mode: the embodiment is described with reference to fig. 6 and 7, and the left end of the upper half shell 1 of the embodiment is provided with a first tubular handle 1-2 and a second tubular handle 1-3; the left end of the lower half shell 2 is provided with a third tubular handle 2-1 and a fourth tubular handle 2-2, one end of a screw pin 5 sequentially passes through the third tubular handle 2-1, the second tubular handle 1-3, a tubular body 7-2 of a longitudinal rod 7, the fourth tubular handle 2-2 and the first tubular handle 1-2, and then is screwed by a nut 6 to stop the connection, such as a same door hinge connection structure.

Other components are connected in the same manner as in the first or second embodiment.

The fourth concrete implementation mode: the present embodiment is described with reference to fig. 1 and 7, and the inner wall of the upper half casing 1 of the present embodiment is provided with a first inverted T-shaped key groove; the inner wall of the lower half shell 2 is provided with a second inverted T-shaped key groove. Other components are connected in the same manner as in the first, second or third embodiment.

The fifth concrete implementation mode: the present embodiment is described with reference to fig. 1 and 7, and the bushing of the present embodiment is an annular body composed of an upper half bushing 3 and a lower half bushing 4, and both the inner wall of the upper half bushing 3 and the inner wall of the lower half bushing 4 are provided with a notch groove. The center line of the notch groove along the length direction is parallel to the axis of the cylinder body.

Other components are connected in the same manner as in the first, second or third embodiment.

The sixth specific implementation mode: the present embodiment will be described with reference to fig. 1 and 7, in which the outer wall of the upper half liner 3 is connected to the inner wall of the upper half shell 1 and the outer wall of the lower half liner 4 is connected to the inner wall of the lower half shell 2.

Other components and connection relationships are the same as those in the first, second, third, fourth or fifth embodiment.

The seventh embodiment: referring to fig. 5, the first inverted T key 3-1 is disposed on the outer wall of the upper half bushing 3 according to the present embodiment; and a second inverted T-shaped key 4-1 matched with the second inverted T-shaped key groove is arranged on the outer wall of the lower half bushing 4. The inverted T-shaped key is embedded in the corresponding inverted T-shaped key groove.

The specific implementation mode is eight: the present embodiment is described with reference to fig. 5 and 7, each clamping block assembly of the present embodiment includes a rectangular block 10 and a plurality of stop bolts 11, one end of the rectangular block 10 is embedded in the notch groove and is positioned by stop positioning bolts 14, the positioning bolts 13 are fixed, the other end of the rectangular block 10 is provided with a rectangular groove, two side walls of the rectangular groove are provided with a plurality of through screw holes, and the stop bolts 11 are inserted into the screw holes.

The rectangular groove of the rectangular block 10 is used for placing the oilstone 12, four stop bolts 11 penetrate through four screw holes in the side wall of the rectangular block 10 to fix the oilstone, and then the six rectangular blocks are placed in the gap grooves in the inner walls of the upper half bushing 3 and the lower half bushing 4.

Other components and connection relationships are the same as those in the first, second, third, fourth, fifth or sixth embodiment.

The specific implementation method nine: referring to fig. 4, the upper end of the outer wall of the upper half shell of the present embodiment is provided with a connecting lug 1-1.

Other components and connection relationships are the same as those of the first, second, third, fourth, fifth, sixth, seventh or eighth embodiment.

The working principle is as follows:

when the device is used, the upper half shell and the lower half shell are firstly separated, the upper half bushing and the lower half bushing are respectively installed with the upper half shell and the lower half shell, then cuboid oilstones 12 are respectively installed in rectangular grooves of six rectangular block bodies 10 and are fixed by stop bolts 11, then six clamping block assemblies are placed in gap grooves of the upper half bushing 3 and the lower half bushing 4, two positioning bolts 13 are used for being bolted to penetrate through the bushings and the rectangular block bodies 10 for connection, the bushings are hoisted and sleeved at the excircle of a rotor journal to be processed through connecting lifting lugs 1-1, the upper half shell screwing bolt 8 and the lower half shell screwing bolt 9 are closed, and the operating lever 7 is installed; then, two stop positioning bolts 14 penetrate through the bottom of each notch groove of the bushing to position the oilstone to a proper position for processing, the rest clamping blocks are positioned in sequence, a sleeping car is started to drive the rotor to rotate, and an operator holds the operating rod 7 by hand to do reciprocating linear motion in the range of the shaft neck along the axis of the rotor, so that the purpose of eliminating the shaft neck run-out overproof of the rotor of the steam turbine can be achieved.

Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A honing device for eliminating the runout out tolerance of a steam turbine rotor shaft neck is characterized in that: the honing device for eliminating the runout tolerance of the steam turbine rotor shaft neck comprises a shell, a lining, a longitudinal rod (7) and a plurality of clamping block assemblies, wherein the shell is sleeved on the lining, the clamping block assemblies are installed on the inner wall of the lining in the circumferential direction, and the longitudinal rod (7) is rotatably connected with the outer wall of the shell.

2. A honing installation for eliminating turbine rotor journal runout overshoot according to claim 1, wherein: the casing is the tourus of compriseing first half casing (1) and lower half casing (2), and the one end of first half casing (1) is passed through the bolt and is connected with the right-hand member of lower half casing (2), and the other end of first half casing (1) passes through the screw bolt and is connected with the left end of lower half casing (2), the one end of vertical pole (7) with the screw bolt rotates to be connected.

3. A honing installation for eliminating turbine rotor journal runout overshoot according to claim 2, wherein: the left end of the upper half shell (1) is provided with a first tubular handle (1-2) and a second tubular handle (1-3); the left end of the lower half shell (2) is provided with a third tubular handle (2-1) and a fourth tubular handle (2-2).

4. A honing installation for eliminating turbine rotor journal runout overshoot according to claim 3, wherein: the inner wall of the upper half shell (1) is provided with a first inverted T-shaped key groove; the inner wall of the lower half shell (2) is provided with a second inverted T-shaped key groove.

5. A honing installation for eliminating turbine rotor journal runout overshoot according to claim 1, wherein: the bush is a ring body consisting of an upper half bush (3) and a lower half bush (4), and the inner wall of the upper half bush (3) and the inner wall of the lower half bush (4) are both provided with notch grooves.

6. A honing installation for eliminating turbine rotor journal runout overshoot according to claim 5, wherein: the outer wall of the upper half bushing (3) is connected with the inner wall of the upper half shell (1), and the outer wall of the lower half bushing (4) is connected with the inner wall of the lower half shell (2).

7. A honing installation for eliminating turbine rotor journal runout overshoot according to claim 6, wherein: the outer wall of the upper half bushing (3) is provided with a first inverted T key (3-1) matched with the first inverted T key groove; and a second inverted T key (4-1) matched with the second inverted T key groove is arranged on the outer wall of the lower half bushing (4).

8. A honing installation for eliminating turbine rotor journal runout overshoot according to claim 1, wherein: every clamp splice subassembly includes rectangular block body (10) and a plurality of stop bolt (11), and the one end of rectangular block body (10) inlays the dress and fixes a position through stop positioning bolt (14) in the breach inslot, and connecting bolt (13) are fixed, and useful rectangular channel is opened to the other end of rectangular block body (10), and two lateral walls of rectangular channel are equipped with a plurality of screw that link up, and stop bolt (11) cartridge is in the screw.

9. A honing installation for eliminating turbine rotor journal runout overshoot according to claim 1, wherein: the upper end of the outer wall of the upper half shell (1) is provided with a connecting lifting lug (1-1).