CN204152564U - A kind of turbine rotor scale removal case - Google Patents

Abstract

The utility model discloses a steam turbine rotor descaling box, which is characterized in that: a box body with a sandwich structure is provided on the bottom surface, a plurality of ultrasonic transducers are arranged in the interlayer, and a pair of tubes for supporting the steam turbine rotor are welded on the bottom surface. The rotor bracket; the cleaning liquid inlet and the cleaning liquid outlet are arranged under the side wall of the box, and the cleaning liquid inlet and the cleaning liquid outlet are connected through the cleaning liquid pipeline, and a water pump and a filter are installed on the cleaning liquid pipeline; used to control the ultrasonic The transducer and the transducer switch for adjusting the power of the generated ultrasonic waves are arranged on the outer wall of the box. The descaling box of the utility model realizes the thorough cleaning of the steam turbine rotor through ultrasonic cleaning, and ensures that the steam turbine rotor and blades are not damaged during cleaning, which solves the problem of incomplete cleaning, low work efficiency and easy damage to the steam turbine rotor and blades in the existing cleaning method. The blade problem.

Description

A steam turbine rotor descaling box

technical field

The utility model relates to a steam turbine rotor descaling box, which belongs to the steam turbine maintenance technology.

Background technique

The cleaning of steam turbine rotor in steam turbine maintenance is an important step to ensure the quality of steam turbine maintenance and economic operation in the future. At present, steam turbine rotors are cleaned by hand-held spray guns. There are sandblasting, shot peening, water spraying and other processes, but these processes are all partial cleaning, which will cause great damage to the rotors and blades. Or spray gun can't reach and cause cleaning not thoroughly, also waste labor, work efficiency is low simultaneously.

Contents of the invention

The utility model provides a steam turbine rotor descaling box in order to avoid the disadvantages of the above-mentioned prior art, in order to realize the thorough cleaning of the steam turbine rotor by means of ultrasonic cleaning, and at the same time ensure that the steam turbine rotor is not damaged.

The utility model solves the technical problem and adopts the following technical solutions:

The steam turbine rotor descaling box of the present invention has a structural feature in that: a box body with a sandwich structure is provided on the bottom surface, a plurality of ultrasonic transducers are arranged in the bottom surface interlayer of the box body, and a track is arranged on the bottom surface. A pair of rotor brackets for supporting the rotor of the steam turbine are installed in the track, and the rotor brackets can slide along the track to adjust the distance between the two rotor brackets;

A cleaning liquid inlet and a cleaning liquid outlet are arranged below the side wall of the box, and the cleaning liquid inlet and the cleaning liquid outlet are connected through a cleaning liquid pipeline, and a water pump and a filter screen are installed on the cleaning liquid pipeline;

A transducer switch for controlling the ultrasonic transducer and adjusting the power of the generated ultrasonic waves is arranged on the outer wall of the box.

The steam turbine rotor descaling box of the utility model also has the structural features that: the frequency of the ultrasonic transducer is 40kHz, and 100 parallel ultrasonic transducers are arranged in the bottom interlayer.

The rotor bracket is composed of a base and a support frame fixed above the base; a rotating gear and a gear motor for controlling the rotating gear are arranged in the base of any one of the two rotor brackets. A rotating wheel is arranged on the upper surface of the supporting frame of the rotor bracket; driven by the rotating gear, the steam turbine rotor above the rotating wheel rotates with the rotating wheel.

A box cover is arranged on the box body.

The box body is made of 304 stainless steel plate, and the rotor bracket is made of 304 stainless steel angle iron.

The filter screen is detachable, and isolation valves are installed upstream and downstream of the filter screen.

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

1. The descaling box of the utility model realizes the thorough cleaning of the steam turbine rotor through ultrasonic cleaning, and ensures that the steam turbine rotor is not damaged during cleaning, which solves the problems of incomplete cleaning, low work efficiency and damage to the steam turbine rotor in the existing cleaning method ;

2. The descaling box of the utility model is easy to operate, saves labor and improves work efficiency;

3. The bottom surface of the descaling box of the utility model adopts a sandwich structure, and there are multiple ultrasonic transducers inside, and can generate a variety of ultrasonic waves with different powers through the control of the transducer switch, which can meet the needs of different types of steam turbine rotors;

4. The descaling box of the utility model is equipped with a cleaning liquid circulation control system to save cleaning liquid;

5. The distance between a pair of rotor brackets used to support the steam turbine rotor in the descaling box of the utility model can be adjusted to adapt to different types of steam turbine rotors; and the rotor bracket is provided with a rotating gear that drives the rotation of the steam turbine rotor , can improve the cleaning effect and cleaning efficiency of the steam turbine rotor.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Symbols in the figure: 1 box body; 1a box cover; 2 ultrasonic transducer; 2a transducer switch; 3 rotor bracket; 3a base; 3b support frame; 3c rotating gear; 3d gear motor; 3e rotating wheel; 4 cleaning Liquid inlet; 5 Cleaning liquid outlet; 6 Cleaning liquid pipeline; 7 Water pump; 8 Filter screen.

Detailed ways

As shown in Figure 1, the structure of the steam turbine rotor descaling box of the present utility model is: a bottom surface is provided with a casing 1 of sandwich structure, and a plurality of ultrasonic transducers 2 are arranged in the bottom surface interlayer of the casing, and a bottom surface is provided with Rails, a pair of rotor brackets 3 for supporting the rotor of the steam turbine are installed in the rails, and the rotor brackets 3 can slide along the rails to adjust the distance between the two rotor brackets;

A cleaning liquid inlet 4 and a cleaning liquid outlet 5 are arranged below the side wall of the box body 1, and the cleaning liquid inlet 4 and the cleaning liquid outlet 5 are communicated through a cleaning liquid pipeline 6, and a water pump 7 and a filter screen 8 are installed in the cleaning liquid pipeline 6 ;

A transducer switch 2 a for controlling the ultrasonic transducer 2 and adjusting the power of the generated ultrasonic waves is arranged on the outer wall of the box body 1 .

In a specific implementation, the frequency of the ultrasonic transducer 2 is 40 kHz, and a total of 100 ultrasonic transducers 2 are arranged in parallel with each other in the interlayer on the bottom surface.

The rotor bracket 3 is composed of a base 3a and a support frame 3b fixed above the base 3a; a rotating gear 3c and a gear motor for controlling the rotating gear 3c are arranged in the base 3a of any one of the two rotor brackets 3 3d, a rotating wheel 3e is arranged on the upper surface of the supporting frame of the two rotor brackets; driven by the rotating gear, the steam turbine rotor above the rotating wheel rotates with the rotating wheel.

A box cover 1a is provided on the box body 1 .

The box body 1 is made of 304 stainless steel plate, and the rotor bracket 3 is made of 304 stainless steel angle iron.

The filter screen 8 is detachable, and isolation valves are installed upstream and downstream of the filter screen 8. After a period of use, the filter screen can be removed for cleaning or directly replaced.

The usage method of the descaling box of the utility model is:

Adjust the distance between the two rotor brackets;

Use a crane to hoist the steam turbine rotor into the descaling box and mount it on a pair of rotor brackets; fill the cleaning solution (such as alcohol) into the descaling box so that the cleaning solution submerges the blades of the entire steam turbine rotor;

Turn on the water pump to make the cleaning liquid in the descaling box start to circulate;

Turn on the gear motor, so that the rotating gear drives the rotating wheel to rotate, thereby driving the steam turbine rotor located above it to rotate.

According to the type of steam turbine rotor, adjust the switch of the transducer so that the ultrasonic wave with appropriate power is generated in the descaling box, and the descaling box starts to ultrasonically clean the steam turbine rotor;

After cleaning, turn off the switch of the water pump and the switch of the transducer, open the tank cover, and use a crane to lift out the clean and cleaned steam turbine rotor.

Claims (6)

1. a turbine rotor scale removal case, it is characterized in that: the casing (1) that a bottom surface is sandwich structure is set, multiple ultrasonic transducer (2) is provided with in the bottom surface interlayer of described casing, described bottom surface is provided with track, in described track, be provided with a pair for supporting the rotor spider (3) of turbine rotor, described rotor spider (3) can slide along described track to adjust the distance between two rotor spider;

Filter washing water inlet (4) and rinse liquid outlet (5) is provided with below the sidewall of described casing (1), described filter washing water inlet (4) is communicated with by cleaning solution pipeline (6) with described rinse liquid outlet (5), and described cleaning solution pipeline (6) is provided with water pump (7) and filter screen (8);

For control ultrasonic transducer (2) and regulate produce hyperacoustic power transducer switch (2a) be arranged at casing (1) outer side wall.

2. turbine rotor scale removal case according to claim 1, is characterized in that: the frequency of described ultrasonic transducer (2) is 40kHz, is provided with 100 ultrasonic transducers be connected in parallel to each other (2) in the interlayer of bottom surface altogether.

3. turbine rotor scale removal case according to claim 1, is characterized in that:

Described rotor spider (3) is made up of base (3a) and the supporting frame (3b) be fixed on above base (3a); Be provided with transmitting gear (3c) and the gear motor (3d) for controlling described transmitting gear (3c) in the base of any one (3a) in two rotor spider (3), the upper surface of the supporting frame of two rotor spider is provided with moving runner (3e); Under the drive of described transmitting gear, the turbine rotor be positioned at above moving runner rotates with moving runner.

4. turbine rotor scale removal case according to claim 1, is characterized in that: on described casing (1), be provided with case lid (1a).

5. turbine rotor scale removal case according to claim 1, it is characterized in that: described casing (1) is obtained by 304 stainless-steel sheets, described rotor spider (3) is obtained by 304 stainless steel angle bar.

6. turbine rotor scale removal case according to claim 1, is characterized in that: described filter screen (8) is detachable, is provided with separation valve door in the upstream of described filter screen (8) and downstream.