CN218509911U

CN218509911U - Steam turbine rotor aligning connecting pin

Info

Publication number: CN218509911U
Application number: CN202222475931.XU
Authority: CN
Inventors: 才宏
Original assignee: Baotou Iron and Steel Group Co Ltd
Current assignee: Baotou Iron and Steel Group Co Ltd
Priority date: 2022-09-19
Filing date: 2022-09-19
Publication date: 2023-02-21
Anticipated expiration: 2032-09-19

Abstract

The utility model relates to a steam turbine set technical field discloses a steam turbine rotor aligning connecting pin, include: the nylon rod, the rod iron is worn to be equipped with in the middle part of nylon rod, the screw has been seted up to the both ends outer wall of rod iron, the middle part outer wall ring of rod iron is equipped with first spacing ring, and just first spacing ring sets up about the axis position symmetry of rod iron, the both ends outer wall ring of rod iron is equipped with the second spacing ring. The steam turbine rotor aligning connecting pin is provided with a nylon rod and a steel rod, the nylon rod is soft and can play a role in buffering, the connecting pin is not easy to deform as a whole through the steel rod with high hardness penetrating through the inside, and the connecting pin is not easy to damage, so that the labor intensity and the spare part cost of workers during maintenance operation are reduced; and the backing ring is used for strengthening the structural strength of the outer walls of the two ends of the nylon rod, so that the outer walls of the two ends of the nylon rod can provide structural support through the backing ring, the nylon rod and the steel rod are not easy to decompose and fall off, and the use stability is high.

Description

Steam turbine rotor aligning connecting pin

Technical Field

The utility model relates to a steam turbine set technical field specifically is a steam turbine rotor aligning connecting pin.

Background

The steam turbine set needs to be turned for many times in the aligning process to ensure the aligning quality, and the steam turbine rotor and the generator rotor need to be positioned and connected in the turning process to ensure that the measuring points of the dial indicators of the two rotors are at the same position after turning, so that the measuring error is reduced.

The old rotor connecting pin on the market is connected by positioning through a copper bar, but the copper bar is easy to deform in the turning process due to the fact that the rotor is heavy in weight, so that the copper bar is not easy to take out, the problems of increasing production cost and wasting maintenance time are caused, part of combined connecting pins are poor in stability and are easy to decompose in the aligning process, and therefore the aligning connecting pin for the steam turbine rotor is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a steam turbine rotor aligning connecting pin to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a steam turbine rotor self-aligning coupling pin comprising:

the steel bar penetrates through the middle of the nylon bar, screw holes are formed in the outer walls of two ends of the steel bar, a first limiting ring is annularly arranged on the outer wall of the middle of the steel bar and symmetrically arranged about the central axis of the steel bar, second limiting rings are annularly arranged on the outer walls of two ends of the steel bar and symmetrically arranged about the central axis of the steel bar;

first caulking ring, it is fixed the middle part inner wall of nylon stick, and first caulking ring settles the inboard of first spacing ring, the both ends inner wall of nylon stick is fixed with the second caulking ring, and the second caulking ring settles the inboard of second spacing ring, the both ends outer wall of nylon stick inlays and is equipped with the backing ring.

Preferably, the central axis position coincidence of nylon stick and steel bar, and the overall dimension phase-match of steel bar and nylon stick to the material of steel bar is the tungsten steel material.

Preferably, the nylon rod constitutes the block through between first caulking ring and the first spacing ring and the rod iron and is connected, and the nylon rod constitutes the block through between second caulking ring and the second spacing ring and the rod iron and is connected to the backing ring sets up about the axis position symmetry of nylon rod.

Preferably, one end of the steel rod is connected with a single-stud connecting piece through a screw hole, and the other end of the steel rod is connected with a double-stud connecting piece through a screw hole.

Preferably, the steel bar is connected with the nylon rod through a single-stud connecting piece and a backing ring in a clamping mode, and the double-stud connecting piece is connected with the steel bar through a screw hole in a detachable mode.

Preferably, one end, far away from the steel plate, of the double-screw connecting piece is connected with a sleeve, and the other end of the sleeve is welded with a connecting flange.

Preferably, the connecting flange can form threaded connection with the steel rod through the sleeve and the double-bolt connecting piece, and the connecting flange coincides with the central axis positions of the steel rod and the nylon rod.

Compared with the prior art, the beneficial effects of the utility model are that:

the steam turbine rotor aligning connecting pin is provided with a nylon rod and a steel rod, the nylon rod is soft in quality and can play a role in buffering, the connecting pin is not easy to deform as a whole through the steel rod with high hardness penetrating through the inside, and the connecting pin is not easy to damage, so that the labor intensity and spare part cost of workers during maintenance operation are reduced; and the backing ring is used for strengthening the structural strength of the outer walls of the two ends of the nylon rod, so that the outer walls of the two ends of the nylon rod can provide structural support through the backing ring, the nylon rod and the steel rod are not easy to decompose and fall off, and the use stability is high.

Drawings

FIG. 1 is a schematic view of the combined state of the present invention;

FIG. 2 is a schematic view of a cross-sectional structure of the nylon rod of the present invention;

FIG. 3 is a schematic structural view of the disassembled state of the single-stud connector and the double-stud connector of the present invention;

fig. 4 is a structural schematic diagram of the disassembled state of the double-stud connecting piece and the sleeve part of the present invention.

In the figure: 1. a nylon rod; 2. a steel bar; 3. a first limit ring; 4. a second stop collar; 5. a first grommet; 6. a second thimble; 7. a backing ring; 8. a screw hole; 9. a single stud connector; 10. a double-stud connector; 11. a sleeve; 12. and connecting the flanges.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The present invention provides a steam turbine rotor aligning connecting pin through improvement, please refer to fig. 1-2, including: the nylon rod 1, the steel rod 2 is arranged in the middle of the nylon rod 1 in a penetrating mode, the steel rod 2 is made of tungsten steel, the central axis positions of the nylon rod 1 and the steel rod 2 are overlapped, the steel rod 2 is matched with the nylon rod 1 in shape and size, and the nylon rod 1 can be well embedded; the outer walls of two ends of the steel bar 2 are provided with screw holes 8, and the screw holes 8 are used for playing a connecting role and enhancing expansibility; a first limiting ring 3 is annularly arranged on the outer wall of the middle of the steel bar 2, the first limiting ring 3 is symmetrically arranged about the central axis of the steel bar 2, second limiting rings 4 are annularly arranged on the outer walls of two ends of the steel bar 2, and the second limiting rings 4 are symmetrically arranged about the central axis of the steel bar 2; the connecting pin comprises a first embedded ring 5, a second embedded ring 6, a first limiting ring 3, a second limiting ring 6, a second embedded ring 6, a first limiting ring 3, a steel rod 2, a second embedded ring 6, a second limiting ring 6, a connecting pin and a connecting pin, wherein the first embedded ring 5 is fixed on the inner wall of the middle part of a nylon rod 1, the first embedded ring 5 is arranged on the inner side of the first limiting ring 3, the nylon rod 1 is connected with the steel rod 2 in a clamping manner through the first embedded ring 5 and the first limiting ring 3, the second embedded ring 6 is arranged on the inner side of the second limiting ring 4, the nylon rod 1 is connected with the steel rod 2 in a clamping manner through the second embedded ring 6 and the second limiting ring 4, the arranged nylon rod 1 is soft in material and can play a buffering role, the connecting pin is integrally formed through the steel rod 2 with high hardness, the connecting pin is not easy to deform, the measured value is more accurate when the connecting pin is aligned, and the connecting pin is difficult to damage is caused, so that the labor intensity and the cost of spare parts is reduced when workers carry out maintenance operation; the both ends outer wall of nylon stick 1 inlays and is equipped with backing ring 7, and backing ring 7 sets up about nylon stick 1's axis position symmetry, and backing ring 7 is used for strengthening the structural strength of 1 both ends outer wall of nylon stick, makes 1 both ends outer wall of nylon stick can provide structural support through backing ring 7.

Referring to fig. 1 and 3, a turbine rotor aligning connecting pin includes: the one end of rod iron 2 is connected with single stud connecting piece 9 through screw 8, it is connected to constitute the block between rod iron 2 through single stud connecting piece 9 and backing ring 7 and nylon stick 1, the other end of rod iron 2 is connected with two stud connecting pieces 10 through screw 8, and two stud connecting pieces 10 pass through screw 8 and constitute detachable construction between rod iron 2, the single stud connecting piece 9 and two stud connecting pieces 10 that set up are used for installing at 2 both ends of rod iron, fix the position of rod iron 2 in nylon stick 1, through the block extrusion to 1 both ends gasket of nylon stick, make rod iron 2 be difficult for producing the displacement in 1 inside of nylon stick, prevent to influence turboset aligning precision.

Referring to fig. 1 and 4, a turbine rotor aligning connecting pin includes: one end that steel bar 2 was kept away from to two stud connecting piece 10 is connected with sleeve 11, the other end welding of sleeve 11 has flange 12, flange 12 has heard and constitutes threaded connection between sleeve 11 and two stud connecting piece 10 and the steel bar 2, and flange 12 and the axis position coincidence of steel bar 2 and nylon bar 1, sleeve 11 and flange 12 that set up are connected with steel bar 2 through two stud connecting piece 10, flange 12 is used for extending the functionality of this connecting pin, make staff's accessible flange 12 be connected other calibration tool with this connecting pin, strengthen the practicality of this connecting pin.

The working principle is as follows: to this kind of steam turbine rotor aligning connecting pin, at first this connecting pin steel bar 2 wears to establish and fixes inside nylon rod 1, and with the coincidence of the axis position of nylon rod 1, weight distribution is comparatively even, make the focus of this connecting pin comparatively stable, and nylon rod 1 texture is softer, can play the cushioning effect at the aligning in-process, middle steel bar 2 is the tungsten steel material, the great non-deformable of hardness, make the measuring value of aligning operation more accurate, the connecting pin that steel bar 2 and nylon rod 1 make up into is unanimous with the copper bar overall dimension of conventional aligning usefulness, suitability on different steam turbines is better, the condition of difficult production not adaptation, nylon rod 1 cover is established when steel bar 2 outer wall afterwards, first spacing ring 3 and the second spacing ring 4 of establishing ring on first and second abaculus becket ring 5 and the steel bar 2 outer wall through fixing on the inner wall, can prevent effectively that nylon rod 1 from coming off from steel bar 2, error and the operation accident that probably produces when reducing aligning operation, and gasket that nylon rod 1 both ends are equipped with the annular are inlayed ring shape and the staff can carry out single stud connection through this double screw connection piece and the one-step double-column connection of expansion connection of 10 and the reinforcing flange connection piece through this double-screw connection piece 10 and can carry out through this double-screw connection piece 10 with nylon rod connection piece 10.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A steam turbine rotor aligning connecting pin, characterized by includes:

the steel bar fixing device comprises a nylon bar (1), wherein a steel bar (2) penetrates through the middle of the nylon bar (1), screw holes (8) are formed in the outer walls of two ends of the steel bar (2), a first limiting ring (3) is annularly arranged on the outer wall of the middle of the steel bar (2), the first limiting ring (3) is symmetrically arranged about the central axis of the steel bar (2), second limiting rings (4) are annularly arranged on the outer walls of two ends of the steel bar (2), and the second limiting rings (4) are symmetrically arranged about the central axis of the steel bar (2);

first caulking ring (5), it is fixed the middle part inner wall of nylon stick (1), and first caulking ring (5) are settled the inboard of first spacing ring (3), the both ends inner wall of nylon stick (1) is fixed with second caulking ring (6), and second caulking ring (6) settle the inboard of second spacing ring (4), the both ends outer wall of nylon stick (1) inlays and is equipped with backing ring (7).

2. The steam turbine rotor aligning coupling pin according to claim 1, wherein: the central axis position coincidence of nylon stick (1) and steel bar (2), and the overall dimension phase-match of steel bar (2) and nylon stick (1) to the material of steel bar (2) is the tungsten steel material.

3. The self-aligning connecting pin for a steam turbine rotor according to claim 1, wherein: nylon rod (1) constitutes the block through between first abaculus (5) and first spacing ring (3) and rod iron (2) and is connected, and nylon rod (1) constitutes the block through between second abaculus (6) and second spacing ring (4) and rod iron (2) and is connected to backing ring (7) set up about the axis position symmetry of nylon rod (1).

4. The self-aligning connecting pin for a steam turbine rotor according to claim 1, wherein: one end of the steel bar (2) is connected with a single-stud connecting piece (9) through a screw hole (8), and the other end of the steel bar (2) is connected with a double-stud connecting piece (10) through the screw hole (8).

5. The self-aligning connecting pin for a steam turbine rotor according to claim 4, wherein: the steel bar (2) is connected with the nylon bar (1) in a clamping mode through the single-stud connecting piece (9) and the backing ring (7), and the double-stud connecting piece (10) is connected with the steel bar (2) in a detachable mode through the screw hole (8).

6. The self-aligning connecting pin for a steam turbine rotor according to claim 4, wherein: the double-screw connecting piece (10) is connected with a sleeve (11) at one end far away from the steel rod (2), and a connecting flange (12) is welded at the other end of the sleeve (11).

7. The self-aligning connecting pin for a steam turbine rotor according to claim 6, wherein: the connecting flange (12) is used for listening to form threaded connection between the sleeve (11) and the double-bolt connecting piece (10) and the steel rod (2), and the connecting flange (12) coincides with the central axis positions of the steel rod (2) and the nylon rod (1).