CN221362792U - Cylinder rough machining trompil device before steam turbine - Google Patents

Abstract

The utility model discloses a pre-machining perforating device for a front cylinder of a steam turbine, which comprises a frame, wherein a top plate is arranged at the top end of the frame, a cylinder is arranged at the top of the top plate, a transverse plate pushed by the cylinder is arranged at the bottom of the top plate, a perforating head is arranged at the bottom of the transverse plate, a U-shaped frame is arranged on the bottom plate of the frame, a stepping motor is arranged outside the front end of the U-shaped frame, a rotating shaft driven to rotate by the stepping motor is arranged inside the U-shaped frame, support plates in arc structures are connected outside the rotating shaft through two groups of connecting rods, and limiting blocks are arranged at four corners of the support plates. This cylinder rough machining trompil device before steam turbine can the trompil position of cylinder before the fast adjustment, is convenient for carry out surrounding type trompil operation, and processing labour saving and time saving is higher, and efficiency is higher.

Description

Cylinder rough machining trompil device before steam turbine

Technical Field

The utility model relates to the technical field of steam turbines, in particular to a cylinder roughing and perforating device before a steam turbine.

Background

The steam turbine cylinder is the outer casing of the steam turbine. The steam turbine is one of three main force devices of a thermal power plant, the rotor and the cylinder of the steam turbine have high machining precision, and main components work in high-temperature and high-pressure environments. If the steam turbine cylinder is divided into vertical middle parts, the front half part is a front cylinder, the rear half part is a rear cylinder, and the front cylinder and the rear short cylinder are connected through bolts. The machining precision of the front cylinder of the steam turbine directly influences the operation effect of the steam turbine.

At present, the cylinder before the steam turbine rough machining process needs to carry out the trompil processing to its many positions, and current trompil device mostly only can carry out the trompil along the vertical direction, because the cylinder before the steam turbine all is the arc-shaped structure, when need carry out the surrounding type trompil to its many positions on surface, can only frequent with the cylinder before the turbine adjust to suitable position and carry out the operation, this kind of mode is very consuming time and labor, leads to the inefficiency of processing.

Disclosure of utility model

The utility model aims to provide a rough machining perforating device for a front cylinder of a steam turbine, which solves the problems that most of the prior perforating devices provided by the background art can only carry out perforating on the front cylinder of the steam turbine along the vertical direction and can not carry out surrounding operation by rapidly switching the perforating position according to the specification and characteristics of the front cylinder of the steam turbine.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a cylinder rough machining trompil device before steam turbine, includes the frame, the top of frame is equipped with the roof, the roof top is equipped with the cylinder, the bottom of roof is equipped with the diaphragm that promotes through the cylinder, the bottom of diaphragm is equipped with the trompil head, just be equipped with the U-shaped frame on the bottom plate of frame, the externally mounted of U-shaped frame front end has step motor, the inside of U-shaped frame is equipped with the pivot that drives rotatoryly through step motor, the outside of pivot is connected with the backup pad that is the arc structure through two sets of connecting rods, and the four corners of backup pad all is equipped with the stopper.

Preferably, the four corners of backup pad all are equipped with the fixed block, the inside of fixed block is threaded through the helicitic texture and is alternateed there is the screw rod, the screw rod is located the inboard fixed connection of one end of fixed block top and stopper, and the inboard of stopper is equipped with the elastic block.

Preferably, a sliding rod is further fixed on the inner side of the limiting block, and the sliding rod is also inserted in the supporting plate in a sliding mode.

Preferably, the inner side of the frame is provided with a vertical shaft, and the two ends of the transverse plate are sleeved outside the vertical shaft in a sliding manner.

Preferably, both sides of the transverse plate are slidably inserted with compression bars, and the bottom ends of the compression bars are provided with pressing wheels which are obliquely distributed.

Preferably, the outer fixed cover in the middle of the depression bar is equipped with the ring, just be connected with the spring of cover setting in the depression bar outside between the top of ring and the bottom of diaphragm.

Compared with the prior art, the utility model has the beneficial effects that: this cylinder rough machining trompil device before steam turbine can the trompil position of cylinder before the fast adjustment, is convenient for carry out surrounding type trompil operation, and processing labour saving and time saving is higher, and efficiency is higher. The device assembles the steam turbine front cylinder through setting up the backup pad of arc structure in the below of frame, and the backup pad can carry out the surrounding type motion under the drive of step motor and pivot that is equipped with on the U-shaped frame, and the cylinder drives the diaphragm simultaneously and promotes downwards and make the trompil head carry out the perpendicular operation time, and the backup pad can cooperate the trompil position of conversion steam turbine front cylinder.

Drawings

FIG. 1 is a schematic structural view of a device for rough machining and tapping of a front cylinder of a steam turbine;

FIG. 2 is a schematic view of the internal structure of a U-shaped frame of a device for roughing and perforating a front cylinder of a steam turbine;

FIG. 3 is an enlarged schematic view of the opening device for roughing the front cylinder of the steam turbine shown in FIG. 1;

FIG. 4 is a schematic top view of a support plate of a device for roughing and tapping a front cylinder of a steam turbine according to the present utility model.

In the figure: 1. a frame; 2. a top plate; 3. a cylinder; 4. a cross plate; 5. a tapping head; 6. a vertical axis; 7. a U-shaped frame; 8. a stepping motor; 9. a connecting rod; 10. a support plate; 11. a spring; 12. a circular ring; 13. a compression bar; 14. a pinch roller; 15. a limiting block; 1501. a fixed block; 1502. a screw; 1503. a slide bar; 1504. an elastic block; 16. a rotating shaft.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-4, the present utility model provides a technical solution: the utility model provides a cylinder rough machining trompil device before steam turbine, which comprises a frame 1, the top of frame 1 is equipped with roof 2, the both ends of roof 2 all welded fastening is in the corresponding one side in frame 1 top, the centre at roof 2 top is through bolt fixed mounting cylinder 3, the bottom of roof 2 is equipped with diaphragm 4, the output of cylinder 3 runs through to the bottom of roof 2 and with the centre fixed connection at diaphragm 4 top, the bottom of diaphragm 4 is fixed with through the mounting panel and drives rotatory trompil head 5 through the rotating electrical machines, and be equipped with U-shaped frame 7 on the bottom plate of frame 1, the bottom of U-shaped frame 7 is connected with roof 2 of frame 1 through the guide rail, The outside of the front end of the U-shaped frame 7 is provided with a rotating shaft 16 through bolts, the inside of the stepper motor 8,U-shaped frame 7 is provided with a rotating shaft 16, one end of the rotating shaft 16 is connected with the inner wall of the U-shaped frame 7 through a bearing, the output end of the stepper motor 8 penetrates through the inside of the U-shaped frame 7 and is connected with the other end of the rotating shaft 16 through a coupler, the outside of the rotating shaft 16 is connected with a supporting plate 10 in an arc-shaped structure through two groups of connecting rods 9, the top surface of the supporting plate 10 is fixedly bonded with a rubber pad, each group of connecting rods 9 is provided with three connecting rods, two ends of each connecting rod are respectively welded and fixed with the inner side of the supporting plate 10 and the outer wall of the rotating shaft 16, four corners of the supporting plate 10 are respectively provided with a limiting block 15, the frame 1 with the structure can be assembled on the top of the supporting plate 10 through a steam turbine front cylinder needing to be perforated and is attached with the rubber pad, And the limiting block 15 is utilized for limiting and fixing, when the cylinder 3 drives the transverse plate 4 to push downwards on the top plate 2 to enable the tapping head 5 to vertically work, the stepping motor 8 can drive the rotating shaft 16 to rotate through driving the outer side of the U-shaped frame 7, and the rotating shaft 16 can drive the supporting plate 10 to perform surrounding movement through the connecting rod 9 when rotating, so that the effect of quickly adjusting the tapping position of the front cylinder of the steam turbine is realized, surrounding tapping work is facilitated, the problem that the prior art is very time-consuming and labor-consuming in adjusting the tapping position of the front cylinder of the steam turbine is avoided, the machining efficiency is further higher, the fixing blocks 1501 are welded and fixed at four corners of the supporting plate 10, The screw 1502 is inserted into the fixed block 1501 through a thread structure, one end of the screw 1502 positioned at the top of the fixed block 1501 is fixedly connected with the inner side of one end of the limiting block 15, the inner side of the limiting block 15 is provided with an elastic block 1504, the inner wall of the elastic block 1504 is in a circular arc structure, the screw 1502 in the structure can drive the limiting block 15 to move by rotating on the fixed block 1501, the limiting block 15 and the supporting plate 10 can drive the elastic block 1504 to be compressed at the corresponding position of the front cylinder of the steam turbine when being mutually folded, so as to play a role of limiting and fixing the limiting block, the inner side of the limiting block 15 is also welded and fixed with a sliding rod 1503, The sliding rod 1503 is also inserted on the supporting plate 10 in a sliding manner, the sliding rod 1503 is driven to slide on the supporting plate 10 synchronously in the moving process of the limiting block 15, so that the sliding rod 1503 plays a role in limiting the limiting block 15 and prevents the limiting block 15 from rotating, the inner side of the frame 1 is provided with the vertical shaft 6, the upper end of the vertical shaft 6 is fixedly welded with the bottom of the top plate 2, the lower end of the vertical shaft 6 is fixedly welded with the inner wall of the frame 1 through the supporting block, the two ends of the transverse plate 4 are sleeved outside the vertical shaft 6 in a sliding manner, the two ends of the transverse plate 4 of the structure slide along the outer part of the vertical shaft 6 synchronously in the lifting process, so that the stability of the transverse plate 4 when driving the tapping head 5 is improved, The two sides of the transverse plate 4 are respectively and slidably inserted with a pressing rod 13, the bottom end of the pressing rod 13 is provided with a pressing wheel 14 which is obliquely distributed, a circular ring 12 is fixedly sleeved outside the middle of the pressing rod 13, the circular ring 12 and the pressing rod 13 form an integrated structure, a spring 11 sleeved outside the pressing rod 13 is connected between the top of the circular ring 12 and the bottom of the transverse plate 4, the transverse plate 4 of the structure can drive the pressing wheel 14 to be contacted with the outer wall of the corresponding position of the front cylinder of the steam turbine in advance in the descending process, the pressing wheel 14 can drive the pressing rod 13 to slide on the transverse plate 4 after being stressed and enable the spring 11 to generate acting force under the cooperation of the circular ring 12, so that the pressing wheel 14 can flexibly press against the outer wall of the front cylinder of the steam turbine under the elastic acting force of the spring 11, Therefore, the device also plays a certain limiting role, and further improves the stability of the tapping head 5 during operation.

Working principle: when the device for rough machining of the front cylinder of the steam turbine is used, firstly, the front cylinder of the steam turbine needing to be drilled is assembled on the top of the supporting plate 10 and is attached to a rubber pad, then the screw 1502 is rotated respectively, the screw 1502 drives the limiting block 15 to move when rotating on the fixing block 1501, the sliding rod 1503 is driven to slide on the supporting plate 10 in the moving process of the limiting block 15 until the limiting block 15 and the supporting plate 10 are mutually folded, the elastic block 1504 is driven to be pressed at the corresponding position of the front cylinder of the steam turbine, so that four corners of the front cylinder of the steam turbine are limited and fixed, meanwhile, the U-shaped frame 7 moves to a proper opening position on the bottom wall of the frame 1 through the guide rail, then the cylinder 3 is started, when the cylinder 3 drives the transverse plate 4 to slide along the outer side of the vertical shaft 6 to descend, the transverse plate 4 drives the perforating head 5 to vertically operate in the process, when the opening position of the front cylinder needs to be switched, the stepping motor 8 is started, the rotating shaft 16 is driven to rotate when the outer side of the U-shaped frame 7 is driven, the rotating shaft 16 is driven to rotate at a proper angle, namely, the connecting rod 9 drives the supporting plate 10 to perform circular motion through the limiting rod, the four corners of the front cylinder, the cylinder is driven by the connecting rod 10 to quickly, the transverse plate 4 is driven to move down, and the transverse plate 14 is driven to slide on the outer wall of the transverse plate 14 when the transverse plate 4 is driven to slide along the outer wall of the transverse shaft, and the transverse plate is driven to rotate, the transverse plate 13 is correspondingly, and the working force is driven, and the working force is made to rotate, and the transverse compression spring is driven to rotate, and the compression force the compression spring is in the working, when the compression force is in the compression, and when the compression force is in the compression.

Although the present utility model has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present utility model.

Claims (6)

1. The utility model provides a cylinder rough machining trompil device before steam turbine, includes frame (1), the top of frame (1) is equipped with roof (2), its characterized in that: the utility model discloses a motor vehicle, including roof (2) and baffle, roof (2) top is equipped with cylinder (3), the bottom of roof (2) is equipped with diaphragm (4) that promote through cylinder (3), the bottom of diaphragm (4) is equipped with trompil head (5), just be equipped with U-shaped frame (7) on the bottom plate of frame (1), the externally mounted of U-shaped frame (7) front end has step motor (8), the inside of U-shaped frame (7) is equipped with and drives rotatory pivot (16) through step motor (8), the outside of pivot (16) is connected with backup pad (10) that are the arc structure through two sets of connecting rods (9), and the four corners of backup pad (10) all is equipped with stopper (15).

2. The steam turbine front cylinder roughing tapping device of claim 1, wherein: the four corners of backup pad (10) all are equipped with fixed block (1501), the inside of fixed block (1501) is interlude through the helicitic texture has screw rod (1502), the inboard fixed connection of one end and stopper (15) one end that screw rod (1502) are located fixed block (1501) top to the inboard of stopper (15) is equipped with elastomeric block (1504).

3. A steam turbine front cylinder roughing tapping device as claimed in claim 2, wherein: the inner side of the limiting block (15) is also fixed with a sliding rod (1503), and the sliding rod (1503) is also inserted on the supporting plate (10) in a sliding way.

4. The steam turbine front cylinder roughing tapping device of claim 1, wherein: the inner side of the frame (1) is provided with a vertical shaft (6), and the two ends of the transverse plate (4) are sleeved outside the vertical shaft (6) in a sliding manner.

5. The steam turbine front cylinder roughing tapping device of claim 1, wherein: both sides of the transverse plate (4) are slidably inserted with compression bars (13), and pinch rollers (14) which are obliquely distributed are arranged at the bottom ends of the compression bars (13).

6. The steam turbine front cylinder roughing and tapping device as set forth in claim 5, wherein: the outside fixed cover in the middle of depression bar (13) is equipped with ring (12), just be connected with between the top of ring (12) and the bottom of diaphragm (4) and overlap and establish at the outside spring (11) of depression bar (13).