A device for removing scale from a power plant turbine

Abstract

The utility model belongs to the fouling removal technical field, concretely relates to a power plant steam turbine fouling removal device, including the descaling box, the descaling box upper end is installed with the placement subassembly, and the descaling mechanism includes the sliding plate who is connected with the descaling box sliding, and the sliding plate upper end is fixedly installed with the mounting ring, and the mounting ring inside upside is installed with the arc water pipe, and the arc water pipe is fixedly installed with two connecting pipes, and two connecting pipes are commonly installed with the ring water pipe, and the ring water pipe is installed with a plurality of cleaning spray heads, and the descaling box side surface is fixedly installed with the fixed plate, and the threaded column is rotatably installed between two fixed plates, and the fixed plate is installed with the driving motor, the utility model can drive the sliding plate and the mounting ring to slide in the descaling box inside through the driving motor, and then cooperate the cleaning spray head to flush the rotor of the steam turbine placed in the descaling box interior and remove the scale, and the operation avoids the tiredness brought by the cleaning mode of traditional handheld spray head, and is convenient and fast simultaneously.

Description

Technical Field

[0001] This utility model belongs to the field of scale removal technology, specifically relating to a scale removal device for power plant steam turbines. Background Technology

[0002] A steam turbine, also known as a steam engine, is a rotary steam power unit. High-temperature, high-pressure steam passes through a fixed nozzle, becomes an accelerated airflow, and is then injected onto the blades, causing the rotor, which is equipped with rows of blades, to rotate and perform work. The internal structure of a steam turbine includes a rotor, cylinders, couplings, etc.

[0003] After a long period of use, the turbine rotor needs to be cleaned, usually manually using a flushing gun. However, this method is not convenient for cleaning the bottom of the rotor and needs to be improved. Summary of the Invention

[0004] The purpose of this invention is to provide a scale removal device for power plant steam turbines to solve the problems existing in the background art.

[0005] To achieve the above-mentioned technical objectives, the technical solution adopted by this utility model is as follows:

[0006] A scale removal device for a power plant steam turbine includes a descaling box. A placement assembly is installed at the upper end of the descaling box. A descaling mechanism is slidably installed inside the descaling box. The descaling mechanism includes a sliding plate slidably connected to the descaling box. An installation ring is fixedly installed at the upper end of the sliding plate. An arc-shaped water pipe is installed on the upper side inside the installation ring. Two connecting pipes are fixedly installed on the arc-shaped water pipe. A ring-shaped water pipe is connected to several cleaning nozzles. An external connector communicating with the arc-shaped water pipe is installed on the side of the installation ring. A fixing plate is fixedly installed on the side of the descaling box. A threaded post, threadedly connected to the sliding plate, is rotatably installed between the two fixing plates. A drive motor, driven by the threaded post, is installed on the fixing plate.

[0007] The annular water pipe is rotatably connected to the connecting pipe. A push block is fixedly installed on the lower side of the annular water pipe. A brake motor is installed inside the sliding plate. The output end of the brake motor is driven by a first gear rotatably connected to the sliding plate. A second gear meshing with the first gear is rotatably installed on the sliding plate. A threaded rod rotatably connected to the sliding plate is fixedly installed on the second gear. A U-shaped block threadedly connected to the threaded rod is slidably connected to the sliding plate. The push block is located inside the U-shaped block.

[0008] The placement assembly includes a placement cylinder, the center of which matches the center of the annular water pipe. A placement platform matching the placement cylinder is slidably installed on the upper end of the descaling tank, and a semi-circular groove is provided on the upper end of the placement platform.

[0009] The placement platform is slidably connected to the descaling box. A vertical plate is fixedly connected to one side of the placement platform. An installation groove is opened inside the vertical plate. A T-shaped locking block is slidably connected inside the installation groove. A first spring is installed between the T-shaped locking block and the installation groove. A handle is fixedly installed on the side of the T-shaped locking block away from the descaling box. Several locking grooves matching the T-shaped locking block are opened on the side of the descaling box.

[0010] The lower end of the placement platform is symmetrically fixed with T-shaped sliders, and the upper end of the descaling box is provided with a sliding groove that slides and connects with the T-shaped sliders.

[0011] A connecting plate is installed between the descaling box and the placement cylinder, and the connecting plate has a slot that matches the mounting ring.

[0012] This invention enables a sliding plate and mounting ring to slide back and forth inside the descaling box via a drive motor, thereby cooperating with the cleaning nozzle to flush and descale the turbine rotor placed inside the descaling box. This operation avoids the fatigue caused by the traditional handheld nozzle cleaning method, and is convenient and quick. Attached Figure Description

[0013] This utility model can be further illustrated by the non-limiting embodiments given in the accompanying drawings.

[0014] Figure 1 This is a schematic diagram of the structure of a scale removal device for a power plant steam turbine according to the present invention;

[0015] Figure 2 This is a first cross-sectional structural diagram of a scale removal device for a power plant steam turbine according to the present invention;

[0016] Figure 3 for Figure 2 Enlarged structural diagram at point A;

[0017] Figure 4 This is a second cross-sectional structural diagram of a scale removal device for a power plant steam turbine according to the present invention;

[0018] Figure 5 for Figure 4 Enlarged structural diagram at point B;

[0019] Figure 6 This is a schematic diagram of the third cross-sectional structure of a scale removal device for a power plant steam turbine according to the present invention.

[0020] The symbols for the main components are explained below:

[0021] 1. Descaling box, 11. Sliding plate, 12. Mounting ring, 13. Arc-shaped water pipe, 14. Connecting pipe, 15. Ring-shaped water pipe, 16. Cleaning nozzle, 17. External connector, 18. Fixing plate, 19. Threaded column, 20. Drive motor, 21. Push block, 22. Brake motor, 23. First gear, 24. Second gear, 25. Threaded rod, 26. U-shaped block, 30. Placement cylinder, 31. Placement platform, 32. Vertical plate, 33. T-shaped locking block, 34. First spring, 35. Handle, 36. T-shaped slider. Detailed Implementation

[0022] To enable those skilled in the art to better understand this utility model, the technical solution of this utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0023] Example 1: As Figure 1-6 As shown, this utility model discloses a scale removal device for a power plant steam turbine, comprising a descaling box 1, a placement assembly installed at the upper end of the descaling box 1, and a descaling mechanism slidably installed inside the descaling box 1. The descaling mechanism includes a sliding plate 11 slidably connected to the descaling box 1, an installation ring 12 fixedly installed at the upper end of the sliding plate 11, an arc-shaped water pipe 13 installed on the upper side inside the installation ring 12, two connecting pipes 14 fixedly installed on the arc-shaped water pipe 13, a ring-shaped water pipe 15 jointly installed on the two connecting pipes 14, a plurality of cleaning nozzles 16 installed on the ring-shaped water pipe 15, an external connector 17 connected to the arc-shaped water pipe 13 installed on the side of the installation ring 12, a fixing plate 18 fixedly installed on the side of the descaling box 1, a threaded column 19 threadedly connected to the sliding plate 11 rotatably installed between the two fixing plates 18, and a drive motor 20 drivenly connected to the threaded column 19 installed on the fixing plate 18.

[0024] In the initial state, slide the sliding plate 11 and mounting ring 12 to one side of the descaling tank 1, then place the turbine rotor to be cleaned on the placement assembly. After the rotor is placed, connect the external water pipe and external connector 17 so that the aqueous solution is introduced into the arc-shaped water pipe 13 and the annular water pipe 15 through the external connector 17 and finally sprayed out from the cleaning nozzle 16 to clean the rotor. During the cleaning process, the drive motor 20 can also be started to drive the threaded column 19 to rotate. The threaded connection with the threaded column 19 slides under the drive of the drive motor 20, thereby causing the sliding plate 11 and mounting ring 12 to move towards the rotor, and then cooperate with the cleaning nozzle 16 to clean and descale the rotor. The cleaning aqueous solution will drip into the descaling tank 1 and be discharged after cleaning is completed.

[0025] This invention enables a sliding plate and mounting ring to slide back and forth inside the descaling box via a drive motor, thereby cooperating with the cleaning nozzle to flush and descale the turbine rotor placed inside the descaling box. This operation avoids the fatigue caused by the traditional handheld nozzle cleaning method, and is convenient and quick.

[0026] Example 2: Based on Example 1, a further improvement is made. The annular water pipe 15 is rotatably connected to the connecting pipe 14. A push block 21 is fixedly installed on the lower side of the annular water pipe 15. A brake motor 22 is installed inside the sliding plate 11. The output end of the brake motor 22 is driven by a first gear 23 that is rotatably connected to the sliding plate 11. A second gear 24 that meshes with the first gear 23 is rotatably installed on the sliding plate 11. A threaded rod 25 that is rotatably connected to the sliding plate 11 is fixedly installed on the second gear 24. A U-shaped block 26 that is threadedly connected to the threaded rod 25 is slidably connected to the sliding plate 11. The push block 21 is located inside the U-shaped block 26.

[0027] In the initial state, the annular water pipe 15 is in its natural state. When it is necessary to adjust the angle of the cleaning nozzle 16, the brake motor 22 is driven to rotate. The brake motor 22 drives the first gear 23 to rotate, which in turn drives the second gear 24 and the threaded rod 25 to rotate. Since the U-shaped block 26 is slidably connected to the sliding plate 11, the U-shaped block 26 will not rotate. Under the action of the threaded rod 25, it will slide forward or backward. During the sliding process, the U-shaped block 26 will abut against the push block 21 and deflect. As a result, the annular water pipe 15 deflects under the rotational connection of the connecting pipe 14 to adjust the rinsing position of the cleaning nozzle 16, making it convenient to clean the rotor at different positions.

[0028] The placement assembly includes a placement cylinder 30, the center of which matches the center of the annular water pipe 15. A placement platform 31 matching the placement cylinder 30 is slidably installed on the upper end of the descaling tank 1. A semi-circular groove is provided on the upper end of the placement platform 31.

[0029] When placing the rotor, insert one end into the placement cylinder 30, and then place the other end into the semi-circular groove.

[0030] The placement platform 31 is slidably connected to the descaling box 1. A vertical plate 32 is fixedly connected to one side of the placement platform 31. An installation groove is provided inside the vertical plate 32. A T-shaped locking block 33 is slidably connected inside the installation groove. A first spring 34 is installed between the T-shaped locking block 33 and the installation groove. A handle 35 is fixedly installed on the side of the T-shaped locking block 33 away from the descaling box 1. Several locking grooves matching the T-shaped locking block 33 are provided on the side of the descaling box 1.

[0031] When the rotor lengths are different, the distance between the placement platform 31 and the placement cylinder 30 needs to be adjusted. Then, the handle 35 drives the T-shaped locking block 33 to overcome the rebound force of the first spring 34, exit the locking groove and enter the installation groove. Then, the placement platform 31 is slid to a suitable position to release the force on the handle 35. In this way, the T-shaped locking block 33 will be inserted into the locking groove under the rebound force of the first spring 34 to lock the placement groove 31.

[0032] T-shaped sliders 36 are symmetrically fixedly installed at the lower end of the placement platform 31, and a sliding groove is provided at the upper end of the descaling box 1 to slide and connect with the T-shaped sliders 36.

[0033] A connecting plate 37 is installed between the descaling box 1 and the placement cylinder 30. The connecting plate 37 has a slot that matches the mounting ring 12.

[0034] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A scale removal device for a power plant steam turbine, comprising a descaling tank, wherein a placement assembly is installed at the upper end of the descaling tank, characterized in that: A descaling mechanism is slidably installed inside the descaling tank. The descaling mechanism includes a sliding plate slidably connected to the descaling tank. An installation ring is fixedly installed at the upper end of the sliding plate. An arc-shaped water pipe is installed on the upper side inside the installation ring. Two connecting pipes are fixedly installed on the arc-shaped water pipe. The two connecting pipes are connected to an annular water pipe. Several cleaning nozzles are installed on the annular water pipe. An external connector communicating with the arc-shaped water pipe is installed on the side of the installation ring. A fixing plate is fixedly installed on the side of the descaling tank. A threaded column threadedly connected to the sliding plate is rotatably installed between the two fixing plates. A drive motor driven by the threaded column is installed on the fixing plate.

2. The scale removal device for power plant steam turbines according to claim 1, characterized in that: The annular water pipe is rotatably connected to the connecting pipe. A push block is fixedly installed on the lower side of the annular water pipe. A brake motor is installed inside the sliding plate. The output end of the brake motor is driven by a first gear rotatably connected to the sliding plate. A second gear meshing with the first gear is rotatably installed on the sliding plate. A threaded rod rotatably connected to the sliding plate is fixedly installed on the second gear. A U-shaped block threadedly connected to the threaded rod is slidably connected to the sliding plate. The push block is located inside the U-shaped block.

3. The scale removal device for power plant steam turbines according to claim 1, characterized in that: The placement assembly includes a placement cylinder, the center of which matches the center of the annular water pipe. A placement platform matching the placement cylinder is slidably installed on the upper end of the descaling tank, and a semi-circular groove is provided on the upper end of the placement platform.

4. The scale removal device for power plant steam turbines according to claim 3, characterized in that: The placement platform is slidably connected to the descaling box. A vertical plate is fixedly connected to one side of the placement platform. An installation groove is opened inside the vertical plate. A T-shaped locking block is slidably connected inside the installation groove. A first spring is installed between the T-shaped locking block and the installation groove. A handle is fixedly installed on the side of the T-shaped locking block away from the descaling box. Several locking grooves matching the T-shaped locking block are opened on the side of the descaling box.

5. The scale removal device for power plant steam turbines according to claim 4, characterized in that: The lower end of the placement platform is symmetrically fixed with T-shaped sliders, and the upper end of the descaling box is provided with a sliding groove that slides and connects with the T-shaped sliders.

6. The scale removal device for power plant steam turbines according to claim 3, characterized in that: A connecting plate is installed between the descaling box and the placement cylinder, and the connecting plate has a slot that matches the mounting ring.

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