CN211900701U

CN211900701U - Steam turbine locking plate bending universal tool

Info

Publication number: CN211900701U
Application number: CN202020613655.7U
Authority: CN
Inventors: 周鹏; 高迪; 刘高攀; 刘龙刚; 张道聪; 王庆雷; 弓俐萍; 李新; 王文鹏
Original assignee: SHANDONG LONGYUAN ELECTRIC POWER ENGINEERING CO LTD
Current assignee: SHANDONG LONGYUAN ELECTRIC POWER ENGINEERING CO LTD
Priority date: 2020-04-22
Filing date: 2020-04-22
Publication date: 2020-11-10
Anticipated expiration: 2030-04-22

Abstract

The utility model discloses a crooked universal tool of steam turbine locking plate, including the rim plate, a plurality of fixed slots, every have been seted up to the equidistant ring in positive surface of rim plate all be provided with the connecting block in the fixed slot, every all alternate in the connecting block has fixing bolt, every fixing bolt's one end all runs through the lateral wall and the threaded connection of rim plate in the rim plate, fixing bolt deviates from the one end of connecting block and all overlaps and be equipped with the nut, nut threaded connection is on fixing bolt, fixed mounting has protruding circle on the lateral wall of nut, the spring groove of mutually supporting with protruding circle is seted up at the back of rim plate, the spring inslot is provided with supplementary fastening device. The utility model discloses, it is not hard up to have avoided appearing between blade and the rim plate, has avoided influencing the normal use of steam turbine, has improved the security that the steam turbine used.

Description

Steam turbine locking plate bending universal tool

Technical Field

The utility model relates to a steam turbine technical field especially relates to a crooked universal tool of steam turbine locking plate.

Background

The steam turbine is also called as a steam turbine engine, and is a rotary steam power device.A high-temperature high-pressure steam passes through a fixed nozzle to become an accelerated airflow and then is sprayed onto blades, so that a rotor provided with blade rows rotates, and simultaneously, the rotor does work outwards. Steam turbines are the main equipment of modern thermal power plants, and are also used in the metallurgical industry, chemical industry and ship power plants.

In the blade and the rim plate assembling process of steam turbine, require that the blade locking plate is terminal to laminate completely and not allow there is the crack for the rim plate surface, but current rim plate leads to appearing becoming flexible between blade and the rim plate at long-time pivoted in-process, has influenced the normal use of steam turbine, has reduced the security that the steam turbine used.

To solve the above problems, we propose a universal tool for bending locking tabs of a steam turbine to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving among the prior art "current rim plate and leading to appearing not hard up between blade and the rim plate at long-time pivoted in-process, influenced the normal use of steam turbine, reduced the defect of the security that the steam turbine used" to provide the crooked universal tool of a steam turbine locking plate.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a crooked universal tool of steam turbine locking plate, includes the rim plate, a plurality of fixed slots, every have been seted up to the equidistant ring in positive surface of rim plate all be provided with the connecting block in the fixed slot, every all alternate in the connecting block has fixing bolt, every fixing bolt's one end all runs through the lateral wall and the threaded connection of rim plate in the rim plate, fixing bolt deviates from the one end of connecting block and all overlaps and be equipped with the nut, nut threaded connection is on fixing bolt, fixed mounting has protruding circle on the lateral wall of nut, the spring groove of mutually supporting with protruding circle is seted up at the back of rim plate, the spring inslot is provided with supplementary fastening device.

Preferably, the auxiliary fastening mechanism comprises a pressing plate, the pressing plate is connected in the spring groove in a sliding mode, and the pressing plate abuts against the convex ring.

Preferably, one side of the pressing plate, which is far away from the convex ring, is fixedly provided with a spring, and the other end of the spring is fixedly arranged on the inner wall of the spring groove.

Preferably, one end cover that fixing bolt deviates from the connecting block is equipped with the helmet, the helmet passes through bolt housing threaded connection on fixing bolt.

Preferably, a main shaft is fixedly installed at the center of the left side wall of the wheel disc, and the main shaft is fixedly connected with the output end of the steam turbine.

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

when the blades are installed, the blades are firstly placed in the fixed grooves, then the two fixing bolts penetrate through the connecting blocks and the wheel disc and are screwed, the using stability of the blades is ensured, then the nuts are installed on the fixing bolts and are screwed, in the process, the nuts can extrude the pressing plates through the convex rings so as to compress the springs, the elastic force of the springs can extrude the convex rings through the pressing plates, further, the friction force between the nuts and the fixing bolts is increased, the looseness between the fixing bolts and the connecting blocks is prevented, the stability of the blades is further improved, then the protective caps are connected to the fixing bolts through the bolt sleeves and threads, the fixing bolts are further stabilized again, the looseness of the fixing bolts is avoided, the connecting stability of the fixing bolts and the blades is improved, the looseness between the blades and the wheel disc is avoided, the normal use of a steam turbine is prevented from being influenced, and the use safety of the steam turbine is improved, and the wheel disc and the blades are fast and convenient to assemble and disassemble, and time and labor are saved.

Drawings

Fig. 1 is a schematic front structural view of a steam turbine locking plate bending universal tool provided by the present invention;

fig. 2 is a schematic side view of a universal tool for bending a steam turbine locking plate according to the present invention;

fig. 3 is an enlarged schematic view of a point a in fig. 2.

In the figure: the device comprises a main shaft 1, a wheel disc 2, blades 3, fixing bolts 4, fixing grooves 5, connecting blocks 6, spring grooves 7, protective caps 8, bolt sleeves 9, nuts 10, springs 11 and convex rings 12.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying 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.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Referring to fig. 1-3, a steam turbine locking plate bending universal tool comprises a wheel disc 2, a main shaft 1 is fixedly installed at the center of the left side wall of the wheel disc 2, the main shaft 1 is fixedly connected with the output end of a steam turbine, a plurality of fixing grooves 5 are formed in the circular row of the front surface of the wheel disc 2 at equal intervals, a connecting block 6 is arranged in each fixing groove 5, a fixing bolt 4 is inserted in each connecting block 6, a protecting cap 8 is sleeved on one end of each fixing bolt 4, which is far away from the connecting block 6, the protecting cap 8 is in threaded connection with the fixing bolt 4 through a bolt sleeve 9, one end of each fixing bolt 4 penetrates through the side wall of the wheel disc 2 and is in threaded connection with the wheel disc 2, a nut 10 is sleeved on one end of each fixing bolt 4, the nut 10 is in threaded connection with the fixing bolt 4, a convex ring 12 is fixedly installed on the side wall of the nut 10, be provided with supplementary fastening device in the spring groove 7, supplementary fastening device includes the clamp plate, and clamp plate sliding connection is in spring groove 7, and the clamp plate offsets with protruding circle 12, and one side fixed mounting that the clamp plate deviates from protruding circle 12 has spring 11, and spring 11's the other end fixed mounting is on the inner wall of spring groove 7.

In the utility model, when installing the blade 3, firstly, the blade 3 is placed in the fixed slot 5, then two fixing bolts 4 are used to pass through the connecting block 6 and the wheel disc 2 and screwed, the stability of the blade 3 is ensured, then the nut 10 is installed on the fixing bolt 4 and screwed, in the process, the nut 10 can extrude the pressing plate through the convex ring 12 and further compress the spring 11, the elasticity of the spring 11 can extrude the convex ring 12 through the pressing plate, thereby increasing the friction force between the nut 10 and the fixing bolt 4, preventing the looseness between the fixing bolt 4 and the connecting block 6, further improving the stability of the blade 3, then the protective cap 8 is connected on the fixing bolt 4 through the bolt sleeve 9 by screw thread, further stabilizing the fixing bolt 4 again, avoiding the looseness of the fixing bolt 4, improving the stability of the fixing bolt 4 connected with the blade 3, avoiding the looseness between the blade 3 and the wheel disc 2, the normal use of the steam turbine is avoided being influenced, the use safety of the steam turbine is improved, and the wheel disc 2 and the blade 3 are fast and convenient to assemble and disassemble, and time and labor are saved.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A universal tool for bending a lock plate of a steam turbine comprises a wheel disc (2) and is characterized in that, a plurality of fixing grooves (5) are formed in the circular row of the front surface of the wheel disc (2) at equal intervals, a connecting block (6) is arranged in each fixing groove (5), a fixing bolt (4) is inserted in each connecting block (6), one end of each fixing bolt (4) penetrates through the side wall of the wheel disc (2) and is in threaded connection with the wheel disc (2), one end of the fixing bolt (4) departing from the connecting block (6) is sleeved with a nut (10), the nut (10) is in threaded connection with the fixing bolt (4), a convex ring (12) is fixedly arranged on the side wall of the nut (10), the back of the wheel disc (2) is provided with a spring groove (7) matched with the convex ring (12), and an auxiliary fastening mechanism is arranged in the spring groove (7).

2. A universal tool for steam turbine blade bending according to claim 1, characterized in that the auxiliary tightening mechanism comprises a pressure plate, which is slidably connected in a spring groove (7) and which abuts against a collar (12).

3. The steam turbine locking plate bending universal tool according to claim 2, wherein a spring (11) is fixedly mounted on one side of the pressure plate, which is far away from the convex ring (12), and the other end of the spring (11) is fixedly mounted on the inner wall of the spring groove (7).

4. The steam turbine lock plate bending universal tool according to claim 1, characterized in that a protective cap (8) is sleeved on one end of the fixing bolt (4) away from the connecting block (6), and the protective cap (8) is in threaded connection with the fixing bolt (4) through a bolt sleeve (9).

5. The steam turbine locking plate bending universal tool is characterized in that a main shaft (1) is fixedly installed at the center of the left side wall of the wheel disc (2), and the main shaft (1) is fixedly connected with the output end of a steam turbine.