CN218285354U

CN218285354U - Turbine rotor blade assembly tool

Info

Publication number: CN218285354U
Application number: CN202222908539.XU
Authority: CN
Inventors: 赵艳; 赵娜; 张振喜
Original assignee: Qingdao Junfa Electric Valve Co ltd
Current assignee: Qingdao Junfa Electric Valve Co ltd
Priority date: 2022-11-02
Filing date: 2022-11-02
Publication date: 2023-01-13
Anticipated expiration: 2032-11-02

Abstract

The utility model discloses a steam turbine rotor blade assembly fixture belongs to steam turbine rotor blade assembly technical field. The utility model provides a steam turbine rotor blade assembly fixture, includes base and the fixed preceding butt plate that sets up on the base, and fixedly connected with is top on the preceding butt plate, still includes: the movable platform is arranged on the base in a sliding mode, a rear resisting plate is fixedly connected to the movable platform, a three-jaw chuck is arranged on the rear resisting plate in a rotating mode, two groups of extension rods are symmetrically arranged between the front resisting plate and the rear resisting plate, and supporting rollers are connected to the extension rods in a rotating mode; the arc-shaped guide rail is arranged on the front abutting plate in a sliding manner, and the arc-shaped guide rail is connected with a negative pressure suction nozzle in a sliding manner; the utility model discloses can rotate when pressing from both sides tight location steam turbine rotor and adjust installation blade, can also adsorb impurity such as sweeps that can appear in the installation course of working and clear up the collection.

Description

Turbine rotor blade assembly tool

Technical Field

The utility model relates to a steam turbine rotor blade assembles technical field, especially relates to a steam turbine rotor blade assembly fixture.

Background

The steam turbine is a rotary steam power device, high-temperature high-pressure steam passes through a fixed nozzle to become accelerated airflow and then is sprayed on blades, so that a rotor provided with a blade row rotates and works outwards, the blades are key parts of the steam turbine and are one of the finest and most important parts, and the turbine bears the combined action of high temperature, high pressure, huge centrifugal force, steam exciting force, corrosion and vibration and water drop erosion in a wet steam area under extremely harsh conditions, so that the turbine rotor blade assembly tool is required to be assembled for auxiliary assembly.

Through retrieval, the Chinese patent application number: CN202122517895.4, application date: 2021-10-19, disclose a turbine rotor blade assembly locking frock, relate to turbine rotor blade assembly technical field, specifically be a turbine rotor blade assembly locking frock, including the base, the upper end front portion of base all fixed welding has two fixed plates, and two fixed plates are bilateral symmetry and set up, movable mounting has drive screw between two fixed plates, drive screw's left end runs through left fixed plate and fixed mounting has the turning handle, the upper end rear portion fixed mounting of base has two spacing grooves, fixed mounting has two moving mechanism between two spacing grooves, and two moving mechanism are bilateral symmetry and distribute, two moving mechanism's front portion all with drive screw threaded connection, two moving mechanism's upper portion all slidable mounting has hold-down mechanism, the screw thread of the outer surface left and right sides of drive screw is the inverted structure. A steam turbine rotor blade assembly locking frock, can fix the rotor of different length, simple structure, the commonality is strong, the simple operation, and fixed firm, avoided the blade to rock at the rotor in assembling process effectively, stability is strong.

In the in-service use discovery, when the steam turbine rotor carries out the erection blade, the rotor surface is supported by hold-down mechanism, can make the steam turbine rotor can't rotate and adjust the installation, still need pop out hold-down mechanism, when popping out the angle of adjusting the rotor, influence the positioning accuracy of steam turbine rotor easily, reduce follow-up blade assembly uniformity, and impurity such as sweeps can appear in the installation course of working, if not adsorb the clearance in time, probably harm operation workman's healthy.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem that the installation can not be adjusted and the problem of piece impurity can not be adsorbed in the time of installing rotor blade among the prior art, and a steam turbine rotor blade assembly fixture who provides.

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

the utility model provides a steam turbine rotor blade assembly fixture, includes base and the fixed preceding butt plate that sets up on the base, fixedly connected with is top on the preceding butt plate, still includes: the movable platform is arranged on the base in a sliding mode, a rear abutting plate is fixedly connected to the movable platform, a three-jaw chuck is arranged on the rear abutting plate in a rotating mode, two groups of extension rods are symmetrically arranged between the front abutting plate and the rear abutting plate, and supporting rollers are connected to the extension rods in a rotating mode; the arc-shaped guide rail is arranged on the front abutting plate in a sliding mode and is connected with the negative pressure suction nozzle in a sliding mode.

In order to improve the adjustability and the convenience of the movable block, the adjustable movable block preferably further comprises a connecting plate which is arranged on the front abutting plate in a sliding mode, the connecting plate and the tip are located on the same plane, the arc-shaped guide rail is fixedly connected to the connecting plate, and a locking bolt used for locking the connecting plate is arranged on the front abutting plate.

In order to facilitate the operation of workers, furthermore, a sliding table is arranged on the arc-shaped guide rail in a sliding manner, and the negative pressure suction nozzle is fixedly connected to the sliding table.

For the convenience of adjusting the distance and the position of the mobile platform, preferably, a sliding block is fixedly connected to the bottom of the mobile platform, a cavity is formed in the base, a screw rod is arranged in the cavity in a rotating mode, the sliding block is connected to the screw rod in a threaded mode, a motor is fixedly arranged in the cavity, and the screw rod is fixedly connected to the output end of the motor.

For the convenience of the base goes up and down, preferably, still include supporting platform, fixedly connected with pillar on the supporting platform, the bottom fixedly connected with movable rod of base, movable rod sliding connection is in the pillar, fixedly connected with electric telescopic handle on the supporting platform, the base is fixed with electric telescopic handle's output end and links to each other.

In order to improve the adsorption effect of the negative pressure suction nozzle, preferably, a negative pressure pump and a dust collection box are fixedly connected to the supporting platform, an input end of the negative pressure pump is communicated with the negative pressure suction nozzle through an air inlet pipe, an output end of the negative pressure pump is communicated into the dust collection box through an air outlet pipe, the dust collection box is filled with liquid, the air inlet pipe is arranged below the liquid, an exhaust pipe is arranged above the liquid, and a filter screen is arranged on the exhaust pipe.

Compared with the prior art, the utility model provides a steam turbine rotor blade assembly fixture possesses following beneficial effect: this steam turbine rotor blade assembly fixture, press from both sides the steam turbine rotor tightly and fix a position through three-jaw chuck and top, utilize the backing roll to support and rotate the steam turbine rotor, thereby also can rotate it when pressing from both sides tight location to the steam turbine rotor and adjust the installation blade, when improving blade assembly precision, uniformity when also having guaranteed follow-up assembly, this steam turbine rotor blade assembly fixture, can laminate the blade better through the gliding negative pressure suction nozzle of arc, the sweeps that produces when will installing the blade adsorbs the collection in time, in order to guarantee that the operation workman's is healthy.

The part that does not relate to in the device all is the same with prior art or can adopt prior art to realize, the utility model discloses can rotate when pressing from both sides tight location steam turbine rotor and adjust the installation blade, can also adsorb impurity such as sweeps that can appear in the installation course of working and clear up the collection.

Drawings

Fig. 1 is a first schematic structural diagram of a turbine rotor blade assembly fixture provided by the present invention;

fig. 2 is a schematic structural diagram ii of a turbine rotor blade assembly fixture provided by the present invention;

fig. 3 is a schematic structural diagram three of a turbine rotor blade assembly fixture provided by the present invention;

fig. 4 is a schematic structural diagram of the turbine rotor blade assembling tool according to the present invention.

In the figure: 1. a base; 101. a cavity; 102. a motor; 103. a screw rod; 2. a mobile platform; 201. a slider; 3. a front resisting plate; 301. a tip; 4. a rear resisting plate; 401. a three-jaw chuck; 5. an extension rod; 501. a support roll; 6. a connecting plate; 601. locking the bolt; 7. an arc-shaped guide rail; 8. a sliding table; 801. a negative pressure suction nozzle; 9. a negative pressure pump; 901. an air inlet pipe; 902. an air outlet pipe; 10. a dust collection box; 1001. an exhaust pipe; 11. a movable rod; 12. a support post; 13. an electric telescopic rod; 14. and supporting the platform.

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.

Example (b):

referring to fig. 1-4, a turbine rotor blade assembly fixture includes a base 1 made of rigid material such as steel or cast iron, a front support plate 3 welded on the base 1, a tip 301 installed on the front support plate 3 for centering and bearing the gravity and cutting force of a rotor or other workpieces, and a moving platform 2 made of rigid cast iron or other materials, wherein the base 1 of the moving platform 2 slides at one end far away from the front support plate 3, a rear support plate 4 welded on the moving platform 2, a top block welded on the rear support plate 4, a three-jaw chuck 401 installed on one side of the top block, and the three-jaw chuck 401 is rotatably installed in the top block, and the rotor or other workpieces can be clamped and positioned by radial movement of three movable jaws uniformly distributed on the three-jaw chuck 401;

in addition, the tip 301 on the front supporting plate 3 abuts against the three-jaw chuck 401 on the rear supporting plate 4, the rotor is positioned and clamped, the extension rod 5 is arranged between the front supporting plate 3 and the rear supporting plate 4, the two extension rods 5 are in a group, two of the group of extension rods are symmetrically arranged on two sides of the axis of the tip 301 respectively, the top of each extension rod 5 is provided with a supporting roller 501 for supporting the lower end of a steam turbine rotor shaft, so that the steam turbine rotor can be rotated and adjusted to be installed at the same time of clamping and positioning, when the blade is installed, the blade at the installation position can be arranged at the position approximately horizontal to the chest cavity of a worker, the welding and assembly of the worker are facilitated, and the assembly precision of the blade is improved, and meanwhile, the consistency in the subsequent assembly is guaranteed.

It should be noted that, the extension rod 5 is welded on the base 1, the material is made of reinforced steel or other rigid metal, and is used for bearing the weight of the rotor, and there are four groups of support rollers 501, there are chutes on the front support plate 3, and then place the connecting plate 6 in the chute to slide, there are locking bolts 601 or other locking devices installed on the front support plate 3, after the connecting plate 6 moves to a proper position, it can be fixed, so that the negative pressure suction nozzle 801 can attach and adsorb the scraps generated when installing the blades, the arc guide rail 7 is made of corrugated pipe or other flexible rod, it can adjust the arc angle of the arc guide rail 7, so as to better attach the blades to adsorb the scraps, because the blades installed on the turbine rotor are arranged that the blade diameter at both ends is greater than the blade diameter in the middle, the overall diameter of the blades is reduced from both ends to the middle, so as to receive the high-speed air flow emitted by the nozzle cascade, convert the kinetic energy of steam into mechanical energy, drive the rotor to rotate, when installing the blades, the sliding table 8 is installed on the arc guide rail 7, there is installed on the suction nozzle cascade, and the sliding table 801 can better ensure the operation of the blades to attach and the waste gas to attach the blades.

For the structural design of this scheme of laminating better, the suitability design has been done to the negative pressure suction nozzle 801 and the moving platform 2 that adsorb the sweeps, welding has slider 201 in moving platform 2's bottom, cavity 101 has been seted up in base 1, fixed mounting has driving motor 102 in cavity 101, the welding has lead screw 103 on motor 102's output, with slider 201 threaded connection on lead screw 103, it drives slider 201 and carries out the left and right translation again to drive back support plate 4 and carry out left and right translation removal, can adjusting position distance between messenger's preceding support plate 3 and the back support plate 4, so that place the rotor of different length, improve the device's practicality convenience.

It should be noted that, in order to make the negative pressure suction nozzle 801 have a better suction effect, we can provide negative pressure suction to the negative pressure suction nozzle 801 through an external negative pressure device or other dust suction devices, in the present solution, we add a support platform 14 according to the whole structure, the installation method is as follows, a movable rod 11 is welded at the bottom of the base 1, and the movable rod 11 is slidably connected in the pillars 12, the support platform 14 is installed on four groups of pillars 12, two groups of symmetrical electric telescopic rods 13 are placed on the support platform 14, the base 1 is lifted through the electric telescopic rods 13 so as to place the rotor, and the negative pressure pump 9 installed on the support platform 14, the input end of the negative pressure pump 9 is communicated with the negative pressure suction nozzle 801 through an air inlet pipe 901 so as to provide negative pressure suction for the negative pressure suction nozzle 801, the output end of the negative pressure pump 9 is communicated to the dust collection box 10 through an air outlet pipe 902 so as to be collected in the dust collection box 10, a one-way valve is arranged on the air outlet pipe 902 so as to prevent the liquid in the dust collection box 10 from flowing back to the negative pressure suction nozzle 9 to cause damage, the dust collection box 10 to adsorb the waste, and then exhaust pipe 1001 to improve the dust collection effect on the filter screen.

The above, only be the embodiment of the preferred 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, which are designed to be replaced or changed equally, all should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a steam turbine rotor blade assembly fixture, includes base (1) and fixed preceding butt plate (3) of setting on base (1), fixedly connected with is top (301) on preceding butt plate (3), its characterized in that still includes:

a mobile platform (2) arranged on the base (1) in a sliding way,

the movable platform (2) is fixedly connected with a rear supporting plate (4), the rear supporting plate (4) is rotatably provided with a three-jaw chuck (401), two groups of extension rods (5) are symmetrically arranged between the front supporting plate (3) and the rear supporting plate (4), and the extension rods (5) are rotatably connected with supporting rollers (501);

the arc-shaped guide rail (7) is arranged on the front supporting plate (3) in a sliding mode, and the arc-shaped guide rail (7) is connected with a negative pressure suction nozzle (801) in a sliding mode.

2. The turbine rotor blade assembly fixture according to claim 1, further comprising a connecting plate (6) slidably disposed on the front support plate (3), wherein the connecting plate (6) and the tip (301) are located at the same horizontal height, one end of the arc-shaped guide rail (7) is fixedly connected to the connecting plate (6), and the front support plate (3) is provided with a locking bolt (601) for locking the connecting plate (6).

3. The turbine rotor blade assembly tooling as claimed in claim 2, wherein a sliding table (8) is slidably arranged on the arc-shaped guide rail (7), and the negative pressure suction nozzle (801) is fixedly connected to the sliding table (8).

4. The steam turbine rotor blade assembling tool according to claim 1, wherein a sliding block (201) is fixedly connected to the bottom of the moving platform (2), a cavity (101) is formed in the base (1), a screw rod (103) is rotatably arranged in the cavity (101), the sliding block (201) is in threaded connection with the screw rod (103), a motor (102) is fixedly arranged in the cavity (101), and the screw rod (103) is fixedly connected to an output end of the motor (102).

5. The turbine rotor blade assembling tool according to claim 1, further comprising a supporting platform (14), wherein a supporting column (12) is fixedly connected to the supporting platform (14), a movable rod (11) is fixedly connected to the bottom of the base (1), the movable rod (11) is slidably connected into the supporting column (12), an electric telescopic rod (13) is fixedly connected to the supporting platform (14), and the base (1) is fixedly connected to an output end of the electric telescopic rod (13).

6. The steam turbine rotor blade assembling tool according to claim 5, wherein a negative pressure pump (9) and a dust collection box (10) are fixedly connected to the supporting platform (14), an input end of the negative pressure pump (9) is communicated with a negative pressure suction nozzle (801) through an air inlet pipe (901), an output end of the negative pressure pump (9) is communicated into the dust collection box (10) through an air outlet pipe (902), the dust collection box (10) is filled with liquid, the air inlet pipe (901) is arranged below the liquid, an exhaust pipe (1001) is arranged above the liquid, and a filter screen is arranged on the exhaust pipe (1001).