A cleaning device for a steam turbine rotor

Abstract

The utility model relates to steam turbine technical field, and disclose a kind of cleaning device of steam turbine rotor, including fixed base, the top platform of fixed base is welded with cleaning tank, and the inside of cleaning tank is provided with adjusting assembly, and the side of fixed base is equipped with recovery assembly. The cleaning device of steam turbine rotor is rotated by starting positive and negative motor drive screw, utilizes the thread rotation direction of screw opposite sides, drives two groups of translation seat to do relative close or far horizontal movement, and then realizes the left and right position adjustment of two groups of high-pressure spray head;Meanwhile, by the left and right rotation of the telescopic drive bottom injection plate of electric push plate, the high-pressure spray head of injection plate bottom can be flexibly adjusted injection angle, this "position adjustable+angle controllable" double adjustment structure can accurately cover steam turbine rotor gap, blade gap and other difficult cleaning parts, effectively improve cleaning coverage and washing strength, significantly optimize the overall cleaning effect of steam turbine rotor.

Description

Technical Field

[0001] This utility model relates to the field of steam turbine technology, specifically a steam turbine rotor cleaning device. Background Technology

[0002] A steam turbine is a rotary power machine that converts the thermal energy of steam into mechanical energy. The steam turbine rotor is one of the core components of the steam turbine, and its role is involved in the entire process of steam energy conversion, power output, and stable operation of the unit.

[0003] Steam turbine rotors operate in a high-temperature, high-pressure steam environment. The steam may carry trace impurities or deposits due to poor steam quality. These impurities will gradually form scale on key parts of the rotor such as blades, impellers, and journals, so it is necessary to clean the steam turbine rotor.

[0004] The prior art patent document CN217664917U discloses a cleaning device for a steam turbine rotor. This cleaning device supports and rotates the steam turbine rotor by setting a fixed component, thereby cleaning the rotor from all directions. By setting a cleaning component to rinse the rotor, it replaces manual methods, which not only saves time and labor but also greatly improves the cleaning effect and work efficiency.

[0005] The aforementioned prior art, although the cleaning device washes the rotor by setting up cleaning components, replacing manual methods and saving time and labor, only uses vertical spraying to clean the rotor from the top. However, the rotor surface has different shapes, and some gaps cannot be cleaned by vertical spraying. As a result, dirt and grime accumulate in the gaps of the turbine rotor, making it impossible for the cleaning device to completely and effectively clean the turbine rotor. Therefore, we need a cleaning device for turbine rotors. Utility Model Content

[0006] The purpose of this utility model is to provide a cleaning device for a steam turbine rotor, in order to solve the problem that the cleaning device in the patented technology mentioned in the background art only performs vertical spray cleaning on the rotor from the top. However, the surface shape of the rotor is different, and some gaps cannot be cleaned by vertical spraying. As a result, dirt and grime accumulate in the gaps of the steam turbine rotor, making it impossible for the cleaning device to completely and effectively clean the steam turbine rotor.

[0007] To achieve the above objectives, this utility model provides the following technical solution: A cleaning device for a steam turbine rotor includes a fixed base, a cleaning tank welded to the top platform of the fixed base, an adjustment component being provided inside the cleaning tank, and a recycling component being installed on one side of the fixed base. The adjustment assembly includes a forward and reverse motor. The output end of the forward and reverse motor is detachably connected to a lead screw via a coupling. A translation seat is threaded onto the outer wall of the lead screw. A connecting shaft is fixedly connected to the bottom of the translation seat. A hinge is hinged to the bottom of the connecting shaft. A spray plate is fixedly connected to the bottom of the hinge. A high-pressure nozzle is installed at the bottom of the spray plate. An electric push plate is hinged to the top of the spray plate. The recycling assembly includes a drain pipe, one end of which is fixedly connected to a processing box. A sealing groove is provided on the top of the processing box, and a filter element is fitted into the inner wall of the sealing groove. A connecting pipe is fixedly connected to one side of the processing box, and a water pump is fixedly connected to one end of the connecting pipe by a clamp. A return pipe is installed at the other end of the water pump by a clamp.

[0008] Preferably, a water storage tank is fixedly connected to the top of the cleaning tank, and a water valve is installed on one side of the water storage tank, with a spray frame provided at one end of the water valve.

[0009] Preferably, one end of the lead screw passes through the inner wall of the translation seat, and the threads on both sides of the lead screw rotate in opposite directions. A protective frame is provided on the outer side of the forward and reverse motors, and the protective frame is fixed to one side of the cleaning box by bolts. A sliding rod is provided on the inner wall of the translation seat and is symmetrically arranged with the lead screw.

[0010] Preferably, the connecting shaft is disposed between the hinge and the translation seat, and the spray plate rotates through the hinge and the connecting shaft. There are two connecting shafts, and the connecting shafts are symmetrically arranged about the vertical line of the translation seat as the axis of symmetry.

[0011] Preferably, there are multiple high-pressure nozzles, which are arranged at equal intervals at the bottom of the spray plate. The electric push plate is disposed between the translation seat and the spray plate, and both ends of the electric push plate are hinged to the translation seat and the spray plate, respectively. The spray plate is connected to the water supply equipment of the water storage tank through a hose.

[0012] Preferably, the drain pipe is L-shaped, with one end of the L-shaped drain pipe penetrating through the top of the treatment box and connecting to it. One end of the filter element extends into the inner wall of the sealing groove and connects to the treatment box, and the number of filter elements is three sets.

[0013] Preferably, the water pump is located between the connecting pipe and the return pipe, and the water pump is fixed to one side of the cleaning tank by a mounting bracket. One end of the return pipe extends through one side of the water storage tank and into its interior.

[0014] Compared with the prior art, the beneficial effects of this utility model are: a cleaning device for a steam turbine rotor, First, this utility model drives the lead screw to rotate by starting a forward and reverse motor. The opposite screw threads on both sides drive the two sets of translation seats to move horizontally closer or further apart, thereby achieving left and right position adjustment of the two sets of high-pressure nozzles. At the same time, the extension and retraction of the electric push plate drives the bottom spray plate to rotate left and right, so that the high-pressure nozzles at the bottom of the spray plate can flexibly adjust the spray angle. This dual adjustment structure of "adjustable position + controllable angle" can accurately cover the gaps and blade gaps of the turbine rotor, effectively improving the cleaning coverage and rinsing force, and significantly optimizing the overall cleaning effect on the turbine rotor.

[0015] Secondly, the wastewater generated during cleaning in this utility model is centrally discharged into a treatment tank via a drain pipe. The treatment tank is equipped with multiple sets of filters of different precision, such as filter screens, activated carbon filter cartridges, and sedimentation tanks. Through multi-stage filtration, the wastewater is deeply purified, enabling it to meet the standards for recycling. The purified water is then pumped back to the storage tank via a return pipe, achieving a closed-loop circulation of cleaning water. This design not only achieves the environmental protection goal of wastewater filtration and purification but also significantly reduces the consumption of fresh water and water waste through the reuse of water resources, meeting the production requirements for energy conservation and emission reduction. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 This is a schematic diagram of the front sectional view of the present invention; Figure 3 This is a schematic diagram of the processing box and filter element of this utility model; Figure 4 This is a schematic diagram of the water valve and spray frame structure of this utility model.

[0017] In the diagram: 1. Fixed base; 2. Cleaning tank; 3. Adjustment assembly; 301. Forward and reverse motor; 302. Lead screw; 303. Translation base; 304. Connecting shaft; 305. Hinge; 306. Spray plate; 307. High-pressure nozzle; 308. Electric push plate; 4. Water storage tank; 5. Water valve; 6. Spray frame; 7. Recycling assembly; 701. Drain pipe; 702. Treatment box; 703. Sealing groove; 704. Filter element; 705. Connecting pipe; 706. Water pump; 707. Return pipe. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 A cleaning device for a steam turbine rotor includes a fixed base 1, a cleaning box 2 welded to the top platform of the fixed base 1, and an adjustment component 3 installed inside the cleaning box 2. A recycling component 7 is installed on one side of the fixed base 1. The adjustment component 3 includes a forward and reverse motor 301. The output end of the forward and reverse motor 301 is detachably connected to a lead screw 302 via a coupling. The outer wall of the lead screw 302 is threadedly connected to a translation seat 303. The bottom of the translation seat 303 is fixedly connected to a connecting shaft 304. The bottom of the connecting shaft 304 is hinged to a hinge member 305. The bottom of the hinge member 305 is fixedly connected to a spray plate 306. A high-pressure nozzle 307 is installed at the bottom of the spray plate 306. An electric push plate 308 is hinged to the top of the spray plate 306. The recycling component 7 includes a drain pipe 701, one end of which is fixedly connected to a treatment box 702. A sealing groove 703 is provided on the top of the treatment box 702. A filter element 704 is fitted into the inner wall of the sealing groove 703. A connecting pipe 705 is fixedly connected to one side of the treatment box 702. A water pump 706 is fixedly connected to one end of the connecting pipe 705 by a clamp. A return pipe 707 is installed at the other end of the water pump 706 by a clamp.

[0020] Through the above technical solution, by starting the forward and reverse motor 301 to drive the lead screw 302 to rotate, and by using the opposite thread directions on both sides of the lead screw 302, the two sets of translation seats 303 are driven to move horizontally closer or further apart, thereby realizing the left and right position adjustment of the two sets of high-pressure nozzles 307; at the same time, by extending and retracting the electric push plate 308, the bottom spray plate 306 is driven to rotate left and right, so that the high-pressure nozzles 307 at the bottom of the spray plate 306 can flexibly adjust the spray angle. This dual adjustment structure of "adjustable position + controllable angle" can accurately cover the gaps and blade gaps of the turbine rotor, effectively improve the cleaning coverage and rinsing force, and significantly optimize the overall cleaning effect on the turbine rotor.

[0021] Specifically, a water storage tank 4 is fixedly connected to the top of the cleaning tank 2, and a water valve 5 is installed on one side of the water storage tank 4. A spray frame 6 is installed at one end of the water valve 5.

[0022] Through the above technical solution, the water storage tank 4 provides a stable water source for the cleaning device, the water valve 5 can control the water flow switch and the flow rate, and the spray frame 6 can spray the turbine rotor from the top to assist in cleaning, forming a coordinated cleaning from top to bottom with the high-pressure nozzle 307 of the adjustment component 3, further improving the cleaning coverage.

[0023] Specifically, one end of the lead screw 302 passes through the inner wall of the translation seat 303, and the threads on both sides of the lead screw 302 rotate in opposite directions. A protective frame is provided on the outer side of the forward and reverse motor 301, and the protective frame is fixed to one side of the cleaning box 2 by bolts. A slide rod is provided on the inner wall of the translation seat 303 and is symmetrically arranged with the lead screw 302.

[0024] Through the above technical solution, the opposite threads on both sides of the lead screw 302 ensure that the two sets of translation seats 303 can move relative to each other. The protective frame provides physical protection for the forward and reverse motors 301, preventing water vapor and impurities from affecting the operation of the forward and reverse motors 301 during the cleaning process. The symmetrically arranged slide rods limit the translation seats 303 to rotate synchronously with the lead screw 302, ensuring that they move smoothly only in the horizontal direction, improving the adjustment accuracy, and enabling the distance between the two sets of high-pressure nozzles 307 to be adjusted, so that a certain part of the turbine rotor can be cleaned as needed.

[0025] Specifically, the connecting shaft 304 is disposed between the hinge 305 and the translation seat 303, and the spray plate 306 rotates through the hinge 305 and the connecting shaft 304. There are two connecting shafts 304, and the connecting shafts 304 are symmetrically arranged about the vertical line of the translation seat 303 as the axis of symmetry.

[0026] Through the above technical solution, the cooperation between the connecting shaft 304 and the hinge 305 provides a rotation fulcrum for the spray plate 306. The symmetrically distributed connecting shafts 304 ensure that the spray plate 306 is subjected to balanced force, ensuring that the angle adjustment process is stable and without jamming, and providing a structural basis for the high-pressure nozzle 307 to be accurately aligned with the rotor gap.

[0027] Specifically, there are multiple high-pressure nozzles 307, which are arranged at equal intervals at the bottom of the spray plate 306. An electric push plate 308 is set between the translation seat 303 and the spray plate 306, and both ends of the electric push plate 308 are hinged to the translation seat 303 and the spray plate 306 respectively. The spray plate 306 is connected to the water supply equipment of the water storage tank 4 through a hose.

[0028] Through the above technical solution, multiple equidistantly arranged high-pressure nozzles 307 can form a dense water flow coverage, enhancing the rinsing force. The telescopic movement of the electric push plate 308 is converted into the angle adjustment of the spray plate 306 through a hinge structure. The electric push plate 308 is a waterproof structure to prevent damage from moisture during long-term use, enabling flexible control of the spray direction of the high-pressure nozzles 307. The hose connection ensures that the water supply to the spray plate 306 is not affected when the angle is adjusted, ensuring the continuity of cleaning.

[0029] Specifically, the drain pipe 701 is L-shaped, with one end of the L-shaped drain pipe 701 penetrating through the top of the treatment box 702 and connecting to it. One end of the filter element 704 extends into the inner wall of the sealing groove 703 and connects to the treatment box 702, and there are three sets of filter elements 704.

[0030] Through the above technical solution, the L-shaped drain pipe 701 can smoothly guide the wastewater in the cleaning tank 2 into the treatment tank 702. The snap-fit ​​connection between the filter element 704 and the sealing groove 703 not only facilitates quick disassembly and replacement, but also ensures that there is no leakage during the filtration process through the seal in the sealing groove 703. The three sets of filter elements 704 can realize multi-stage progressive filtration, which greatly improves the wastewater purification effect.

[0031] Specifically, the water pump 706 is installed between the connecting pipe 705 and the return pipe 707, and the water pump 706 is fixed to one side of the cleaning tank 2 by the mounting bracket. One end of the return pipe 707 extends through one side of the water storage tank 4 and into its interior.

[0032] Through the above technical solution, the water pump 706 provides power for the filtered clean water, which is then transported back to the water storage tank 4 through the connecting pipe 705 and the return pipe 707 to form a complete water circulation system. The mounting bracket ensures the stability of the water pump 706 during operation and reduces vibration and noise. The return pipe 707 extends directly into the water storage tank 4 to avoid secondary pollution during the water transportation process and ensure the cleanliness of the circulating water.

[0033] Working Principle: When using this turbine rotor cleaning device, an external power supply is first installed to power the equipment inside. The turbine rotor to be cleaned is fixed to the support mechanism inside the cleaning tank 2 to ensure stable rotation. The forward and reverse motors 301 are started, driving the lead screw 302 to rotate. Then, the two sets of translation seats 303 move closer or further away along the symmetrically arranged sliding rods until the bottom high-pressure nozzles 307 are aligned with the areas of the rotor to be cleaned, such as blade gaps and journal gaps. Then, the electric push plate 308 is started, and its telescopic movement pushes the spray plate 306 to rotate around the fulcrum of the connecting shaft 304 and the hinge 305 through the hinge structure. The spray angle of the high-pressure nozzles 307 is adjusted to ensure that the water flow accurately impacts the contaminated areas. The water supply valve 5 of the water storage tank 4 is opened, and clean water is delivered to the spray plate 306 through the hose. The high-pressure water flow is formed by multiple equidistantly arranged high-pressure nozzles 307 at the bottom. The rotor gaps are directionally flushed, and the spray rack 6 on the top of the cleaning tank 2 is opened to provide auxiliary spraying to the rotor from above, forming a coordinated cleaning with the high-pressure nozzle 307 to improve the overall coverage. During the cleaning process, the rotor can be slowly rotated by the external drive mechanism to ensure that all parts are flushed by the water flow and to avoid cleaning dead corners. The wastewater containing impurities generated during cleaning is collected at the bottom of the cleaning tank 2 and flows into the treatment tank 702 by gravity through the L-shaped drain pipe 701. Three sets of filters 704 with different precision perform multi-stage progressive filtration of the wastewater to remove suspended impurities and oil. The seals in the sealing groove 703 ensure that there is no leakage during the filtration process. The water pump 706 is started, and the filtered and purified water is pumped to the water storage tank 4 for re-storage through the connecting pipe 705 and the return pipe 707 to achieve closed-loop circulation of cleaning water. This completes all the work. The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit defined by the appended claims and their equivalents.

Claims

1. A cleaning device for a steam turbine rotor, comprising a fixed base (1), characterized in that: A cleaning tank (2) is welded to the top platform of the fixed base (1), and an adjustment component (3) is provided inside the cleaning tank (2). A recycling component (7) is installed on one side of the fixed base (1). The adjustment component (3) includes a forward and reverse motor (301), the output end of which is detachably connected to a lead screw (302) via a coupling, and the outer wall of the lead screw (302) is threadedly connected to a translation seat (303). The bottom of the translation seat (303) is fixedly connected to a connecting shaft (304), and the bottom of the connecting shaft (304) is hinged to a hinge (305). The bottom of the hinge (305) is fixedly connected to a spray plate (306), and a high-pressure nozzle (307) is installed on the bottom of the spray plate (306). The top of the spray plate (306) is hinged to an electric push plate (308). The recycling component (7) includes a drain pipe (701), one end of which is fixedly connected to a processing tank (702), and a sealing groove (703) is provided on the top of the processing tank (702). A filter element (704) is fitted into the inner wall of the sealing groove (703). A connecting pipe (705) is fixedly connected to one side of the processing tank (702), and a water pump (706) is fixedly connected to one end of the connecting pipe (705) by a clamp. A return pipe (707) is installed at the other end of the water pump (706) by a clamp.

2. The cleaning device for a steam turbine rotor according to claim 1, characterized in that: The top of the cleaning tank (2) is fixedly connected to a water storage tank (4), and a water valve (5) is installed on one side of the water storage tank (4). A spray frame (6) is provided at one end of the water valve (5).

3. The cleaning device for a steam turbine rotor according to claim 1, characterized in that: One end of the lead screw (302) is installed through the inner wall of the translation seat (303), and the threads on both sides of the lead screw (302) are rotated in opposite directions. A protective frame is provided on the outside of the forward and reverse motor (301), and the protective frame is fixed to one side of the cleaning box (2) by bolts. A sliding rod is provided on the inner wall of the translation seat (303) and is symmetrically arranged with the lead screw (302).

4. The cleaning device for a steam turbine rotor according to claim 1, characterized in that: The connecting shaft (304) is disposed between the hinge (305) and the translation seat (303), and the spray plate (306) rotates through the hinge (305) and the connecting shaft (304). There are two connecting shafts (304), and the connecting shafts (304) are symmetrically arranged about the vertical line of the translation seat (303) as the axis of symmetry.

5. A cleaning device for a steam turbine rotor according to claim 1, characterized in that: The number of high-pressure nozzles (307) is multiple, and the high-pressure nozzles (307) are arranged at equal distances at the bottom of the spray plate (306). The electric push plate (308) is arranged between the translation seat (303) and the spray plate (306), and the two ends of the electric push plate (308) are respectively hinged to the translation seat (303) and the spray plate (306). The spray plate (306) is connected to the water supply equipment of the water storage tank (4) through a hose.

6. A cleaning device for a steam turbine rotor according to claim 1, characterized in that: The drain pipe (701) is L-shaped. One end of the L-shaped drain pipe (701) passes through the top of the treatment box (702) and is connected. One end of the filter element (704) extends into the inner wall of the sealing groove (703) and is connected to the treatment box (702). The number of filter elements (704) is three sets.

7. A cleaning device for a steam turbine rotor according to claim 1, characterized in that: The water pump (706) is located between the connecting pipe (705) and the return pipe (707), and the water pump (706) is fixed to one side of the cleaning tank (2) by the mounting bracket. One end of the return pipe (707) extends through one side of the water storage tank (4) and into its interior.

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