Cleaning equipment for impeller blades of turboset of thermal power plant

Abstract

The invention provides a thermal power plant turboset impeller blade cleaning device, and relates to the technical field of thermal power plant cleaning. The equipment comprises a bottom plate, two vertical plates are fixed to the two ends of the surface of the bottom plate, a threaded rod is rotationally connected between the top ends of the two vertical plates, the surface of the threaded rod is sleeved with a threaded sleeve in threaded connection with the threaded rod, connecting plates are fixed to the two sides of the threaded sleeve, electric push rods are installed on the connecting plates, and the output ends of the electric push rods penetrate through the connecting plates and are fixedly provided with clamping assemblies; the clamping assembly is used for fixedly clamping the impeller; a sweeping box, a cleaning box and a spraying box are sequentially fixed to the bottom plate, and openings are formed in the tops of the three boxes. The equipment not only can effectively sweep dust, but also can clean stubborn oil stains and sediments with strong adhesive force, can also effectively clean some complex structural parts of the blade, such as the root of the blade, narrow gaps and the like, and is wide in application range and good in cleaning effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of thermal power plant cleaning, in particular to a turbine wheel blade cleaning device for thermal power plant. BACKGROUND

[0002] In thermal power plants, the stable and efficient operation of turbine units is crucial for power production. During long-term operation, the turbine wheel blades will adsorb a large amount of dust, oil stains and other impurities. The accumulation of these contaminants not only increases the weight of the impeller, causing imbalance and causing unit vibration, but also affects the aerodynamic performance of the blades, reducing the efficiency of the turbine unit and increasing energy consumption.

[0003] The invention patent with publication number CN115815172A discloses a turbine wheel blade cleaning device for thermal power plant, which comprises a cleaning bottom plate, two blade cleaning parts are installed at both ends of the cleaning bottom plate, the two blade cleaning parts are arranged symmetrically, the blade cleaning part comprises a cleaning vertical plate installed on the extension end of the cleaning bottom plate, a cleaning support plate is slidably arranged at the upper end of the cleaning vertical plate along the width direction of the cleaning bottom plate, and a cleaning component is arranged in the cleaning support plate. The cleaning device provided by the present application can adjust the angle of the brush plate according to the different inclination angles of the turbine wheel, and the length of the brush plate can be freely spliced, so that the cleaning area of the turbine wheel blades with different inclination angles can be increased, the cleaning effect of the blades can be improved, the position of the brush plate can be automatically adjusted according to the inclination angle of the blades, and the cleaning effect of the blades can be further improved by using the reciprocating shaking mode to clean the blades.

[0004] However, the above-mentioned device still has some deficiencies in use. The surface of the turbine wheel not only gets dirty with dust, but also gets dirty with oil stains and various chemical deposits. Although the brush plate can remove some loose dirt, it is powerless against stubborn oil stains and strongly adhering deposits. Moreover, some complex structural parts of the blades, such as the blade root and narrow gaps, cannot be cleaned by the brush plate, which is limited in use and has poor cleaning effect.

[0005] In view of the above reasons, the present application provides a turbine wheel blade cleaning device for thermal power plant to solve the above technical problems. SUMMARY

[0006] The present application aims to provide a turbine wheel blade cleaning device for thermal power plant, which can solve the problem that although the brush plate can remove some loose dirt, it is powerless against stubborn oil stains and strongly adhering deposits, and some complex structural parts of the blades, such as the blade root and narrow gaps, cannot be cleaned by the brush plate, which is limited in use and has poor cleaning effect.

[0007] The application provides a turbine wheel blade cleaning device for a thermal power plant, which comprises a base plate, two vertical plates fixed at the two ends of the surface of the base plate, a screw rod rotatably connected between the top ends of the two vertical plates, a screw sleeve threadedly connected with the screw rod, connecting plates fixed at the two sides of the screw sleeve, an electric push rod installed on the connecting plates, a clamping assembly fixed at the output end of the electric push rod and used for fixing and clamping the turbine wheel. A cleaning box, a washing box and a spraying box are sequentially fixed on the base plate, and openings are formed in the top of the cleaning box, the washing box and the spraying box, which are respectively used for cleaning, ultrasonic cleaning and spraying cleaning of the turbine wheel.

[0008] Preferably, the number of the electric push rods is two, and a closing plate is fixed at the output end of the two electric push rods, the clamping assembly is arranged at the bottom of the closing plate, and the closing plate can completely shield the openings in the top of the cleaning box, the washing box and the spraying box after moving.

[0009] Preferably, a slide rod is further fixed between the top ends of the two vertical plates, the slide rod is arranged on the upper side of the screw rod and parallel to the screw rod, a slide sleeve is slidably sleeved on the surface of the slide rod, the slide sleeve is fixedly connected with the screw sleeve, a first motor is fixedly connected with the side surface of one of the vertical plates, and the output end of the first motor penetrates through the vertical plate and is fixedly connected with one end of the screw rod.

[0010] Preferably, the clamping assembly comprises a mounting frame fixed at the bottom of the closing plate, a bidirectional screw rod rotatably connected between the two side walls in the interior of the mounting frame, two screw sleeves threadedly sleeved on the surface of the bidirectional screw rod, clamping rods fixed at the bottom ends of the two screw sleeves, a limiting rod fixed between the two side walls in the interior of the mounting frame and parallel to the bidirectional screw rod, two limiting sleeves slidably sleeved on the surface of the limiting rod, and the two limiting sleeves are fixedly connected with the two screw sleeves respectively.

[0011] Preferably, a second motor is fixed at the side surface of the mounting frame, and the output end of the second motor extends to the interior of the mounting frame and is fixedly connected with one end of the bidirectional screw rod.

[0012] Preferably, a third motor is fixed on the inner bottom wall of the cleaning box, a rotating rod is fixedly connected with the output end of the third motor, a dust-removing disc is fixed at the top end of the rotating rod, and bristles are arranged on the upper surface of the dust-removing disc.

[0013] Preferably, the length of the bristles is greater than the thickness of the turbine wheel, and a dustproof cover is arranged on the outer portion of the third motor.

[0014] Preferably, a dust collector is fixedly installed on the side of the cleaning box, the dust inlet end of the dust collector is connected with a dust inlet pipe, and the dust inlet pipe extends to the inside of the cleaning box and is connected with a plurality of dust suction heads.

[0015] Preferably, an ultrasonic generator and an ultrasonic transducer are fixedly installed on each of the two side walls in the cleaning box, and a non-corrosive organic solvent is added to the inside of the cleaning box.

[0016] Preferably, a water pump is arranged on the side of the spraying box, the water inlet end of the water pump is connected with an external water source, the water outlet end of the water pump is connected with a water outlet pipe, and the water outlet pipe extends to the inside of the spraying box and is connected with a plurality of spray heads.

[0017] Compared with the prior art, the present application has the following beneficial effects: 1. The impeller can be stably clamped by the clamping assembly, the impeller can be driven to move between the two vertical plates and along the vertical direction by the screw rod, the screw sleeve and the electric push rod, so that the impeller is sequentially placed into the cleaning box, the cleaning box and the spraying box for cleaning operation, the floating dust on the impeller can be preliminarily cleaned by the cleaning box, and then the impeller enters the cleaning box for deep ultrasonic cleaning to remove the oil stains on the surface, and some narrow gaps can also be cleaned. After the impeller is cleaned, it enters the inside of the spraying box, then the clean water outside is transported into the inside of the spraying box by the water pump and sprayed out through the spray head to flush the impeller and wash away the cleaning agent adhered thereto, so that the cleaning is completed. Through the above three-step cleaning method, not only dust can be effectively cleaned, but also stubborn oil stains and strong adhesion deposits can be cleaned, and some complex structure parts of the blade, such as the blade root and narrow gaps, can also be effectively cleaned, so that the use range is wide and the cleaning effect is good. 2. The structure is stable, the operation is convenient, and the cleaning device can be applied to cleaning of impellers of various specifications, so that the application range is wide. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed in the following specific embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0019] Figure 1 It is a front structure schematic view of the cleaning device of the present application. Figure 2 It is a back structure schematic view of the cleaning device of the present application. Figure 3 It is a structure schematic view of the clamping assembly in the present application. Figure 4 It is the internal structure schematic diagram after cutting of the cleaning box in the application; Figure 5 It is the internal structure schematic diagram after cutting of the cleaning box in the application; Figure 6 It is the internal structure schematic diagram after cutting of the cleaning box in the application; Mark explanation: 1, bottom plate; 2, vertical plate; 3, screw rod; 4, screw sleeve; 5, connecting plate; 6, electric push rod; 7, closing plate; 8, clamping assembly; 9, cleaning box; 10, cleaning box; 11, spray box; 12, slide bar; 13, slide sleeve; 14, first motor; 15, mounting frame; 16, bidirectional screw rod; 17, screw sleeve; 18, clamping rod; 19, limiting rod; 20, limiting sleeve; 21, second motor; 22, third motor; 23, rotating rod; 24, dust removal disc; 25, dust collector; 26, dust inlet pipe; 27, water pump; 28, water outlet pipe. DETAILED DESCRIPTION

[0020] The technical solutions of the application will be described below in conjunction with the embodiments, obviously, the described embodiments are part of the embodiments of the application, not all the embodiments. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the application.

[0021] In the description of the application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation of the application.

[0022] In addition, the terms "first", "second", "third", etc. are used only for descriptive purposes and are not to be construed as indicating or implying relative importance or an ordered ranking of the indicated technical features. Thus, features defined with "first", "second" or "third" can include one or more of the features implicitly or explicitly. In the description of the application, the meaning of "a plurality of" is two or more, unless explicitly specified otherwise. In addition, the terms "mounting", "connected", "connection" should be interpreted broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0023] As shown in Figures 1-6 The present application provides a kind of steam turbine unit impeller blade cleaning equipment of thermal power plant, comprising: horizontally arranged bottom plate 1, bottom plate 1 is rectangular plate, its surface both ends are fixed with two vertical plates 2 perpendicular to it, the top end of two vertical plates 2 is rotatably connected with screw rod 3, the surface of screw rod 3 is sleeved with screw sleeve 4 connected with it by screw, the both sides of screw sleeve 4 are fixed with connecting plate 5, electric push rod 6 is installed on connecting plate 5, the output end of electric push rod 6 passes through connecting plate 5 downwards and is fixed with clamping assembly 8, clamping assembly 8 is used to fixedly hold impeller. Bottom plate 1 is sequentially fixed and installed with cleaning box 9, cleaning tank 10 and spray tank 11 from left to right, the top of cleaning box 9, cleaning tank 10 and spray tank 11 are all provided with opening, clamping assembly 8 and impeller can be moved up and down by electric push rod 6, impeller can be moved along horizontal direction by screw sleeve 4 and screw rod 3 cooperation, so as to drive impeller to move into cleaning box 9, cleaning tank 10 and spray tank 11 respectively. Dust on impeller can be preliminarily cleaned in cleaning box 9, then enter cleaning tank 10 for depth ultrasonic cleaning, remove surface oil stain, at the same time, some narrow gap can also be cleaned, impeller is cleaned, then enter the inside of spray tank 11, then clean water outside is transported to the inside of spray tank 11 and sprayed out through spray head, impeller is washed, and the cleaning agent adhered to the surface is washed away, i.e. cleaning is completed, by the above three-step cleaning method, not only dust can be effectively cleaned, but also stubborn oil stain and strong adhesion deposit can be cleaned, and some complex structure parts of blade, such as blade root, narrow gap and the like can also be effectively cleaned, with wide application range and good cleaning effect.

[0024] In the embodiment, the number of the electric push rods 6 is two groups, which are symmetrically fixed on the connecting plates 5 on both sides of the screw sleeve 4. The two groups of electric push rods 6 are driven to synchronously stretch and shrink by controlling the motors to synchronously act. The output ends of the two groups of electric push rods 6 are fixedly connected with the closing plate 7. The clamping assembly 8 is arranged at the bottom of the closing plate 7. The closing plate 7 drives the clamping assembly 8 to move to send the impeller into the cleaning box 9, the cleaning box 10 or the shower box 11. At this time, the closing plate 7 can completely shield the top opening of the cleaning box 9, the cleaning box 10 or the shower box 11, so as to avoid the situation that dust overflows or cleaning liquid splashes during the cleaning, cleaning or spraying process.

[0025] In the embodiment, the top ends of the two vertical plates 2 are further fixedly connected with a sliding rod 12, which is arranged on the upper side of the screw rod 3 and parallel to the screw rod 3. The surface of the sliding rod 12 is slidingly sleeved with a sliding sleeve 13, and the sliding sleeve 13 is fixedly connected with the screw sleeve 4. The side surface of one of the vertical plates 2 is fixedly connected with a first motor 14. The output end of the first motor 14 penetrates through the vertical plate 2 and is fixedly connected with one end of the screw rod 3. By arranging the sliding rod 12 and the sliding sleeve 13, the screw sleeve 4 can be more stable during the movement of the impeller driven by the first motor 14, so as to avoid the phenomenon of front and back swing or jamming.

[0026] As shown in Figure 3 , specifically, the clamping assembly 8 includes a mounting frame 15 fixed at the bottom of the closing plate 7. The mounting frame 15 is a rectangular frame structure in a horizontal form. A bidirectional screw rod 16 is rotatably connected between the two side walls in the inside of the mounting frame 15. Two screw sleeves 17 are threadedly sleeved on the surface of the bidirectional screw rod 16. Two clamping rods 18 are fixedly connected to the bottom ends of the two screw sleeves 17. Since the thread rotation directions of the two ends of the bidirectional screw rod 16 are opposite, the two screw sleeves 17 are close to or away from each other with different rotating directions, so as to drive the two clamping rods 18 to be close to or away from each other, so as to realize the clamping and lowering of the impeller. A limiting rod 19 parallel to the bidirectional screw rod 16 is further fixed between the two side walls in the inside of the mounting frame 15. Two limiting sleeves 20 are slidingly sleeved on the surface of the limiting rod 19. The two limiting sleeves 20 are respectively fixedly connected with the two screw sleeves 17. Through the above structure, the advancing direction of the screw sleeve 17 can be limited to move in a straight line, so as to avoid the swing or jamming to cause the impeller to be damaged by collision, and facilitate the subsequent cleaning operation.

[0027] In the embodiment, the side surface of the mounting frame 15 is fixedly connected with a second motor 21. The output end of the second motor 21 extends to the inside of the mounting frame 15 and is fixedly connected with one end of the bidirectional screw rod 16. By controlling the rotating direction, rotating speed and starting and stopping of the second motor 21, the automatic clamping and fixing of the impeller can be realized.

[0028] As shown in Figure 4As shown, in the embodiment, the third motor 22 is fixed on the inner bottom wall of the cleaning box 9, the output end of the third motor 22 is fixedly connected with the rotating rod 23, the top end of the rotating rod 23 is fixedly connected with the dust sweeping disc 24, the upper surface of the dust sweeping disc 24 is provided with the brush, the length of the brush is greater than the thickness of the impeller, and the narrow position such as the root gap of the impeller can be cleaned. The outer part of the third motor 22 is provided with a dust cover, which can prevent the dust swept down from entering the mechanical parts of the third motor 22 and affecting the normal work.

[0029] In the embodiment, the dust collector 25 is fixedly installed on the side of the cleaning box 9, the dust inlet end of the dust collector 25 is connected with the dust inlet pipe 26, the dust inlet pipe 26 extends to the inside of the cleaning box 9 and is connected with a plurality of dust suction heads, the floating dust generated in the cleaning process is absorbed and treated, and the dust is prevented from escaping into the working environment.

[0030] As shown in the figure, Figure 5 The ultrasonic generator and the ultrasonic transducer are fixedly installed on the two side walls in the cleaning box 10, and the inside of the cleaning box 10 is added with a non-corrosive organic solvent, such as an industrial cleaning agent. Through the ultrasonic cleaning effect combined with the organic solvent, stubborn oil stains and strong adhesion deposits can be deeply and efficiently cleaned.

[0031] As shown in the figure, Figure 6 The water pump 27 is arranged on the side of the spraying box 11, the water inlet end of the water pump 27 is connected with an external water source, the water outlet end of the water pump 27 is connected with the water outlet pipe 28, the water outlet pipe 28 extends to the inside of the spraying box 11 and is connected with a plurality of spray heads, the impeller after cleaning is sprayed, the cleaning agent adhered to the surface is removed, and the impeller is cleaned.

[0032] The use principle of the turbine impeller blade cleaning device for thermal power plant turbine units is as follows: In use, the two clamping rods 18 are inserted into the installation grooves in the middle of the impeller to be cleaned, then the bidirectional screw rod 16 is driven to rotate by the rotation of the second motor 21, so that the two screw rod sleeves 17 and the two clamping rods 18 are moved towards each other, the impeller is tightly fixed by the two clamping rods 18, the screw rod 3 is driven to rotate by the rotation of the first motor 14, so that the screw sleeve 4, the closing plate 7 and the impeller are moved to the upper side of the cleaning box 9, the impeller is lowered into the inside of the cleaning box 9 and contacted with the brush by the elongation of the electric push rod 6, at the same time, the cleaning box 9 is closed by the closing plate 7, the rotating rod 23 and the dust sweeping disc 24 are driven to rotate by the rotation of the third motor 22, the floating dust on the surface and the root gap of the impeller is preliminarily cleaned by the brush, and the fly ash generated in the cleaning process is absorbed and treated by the dust collector 25. When the preliminary cleaning of the impeller is completed, the electric push rod 6 restores the original position to drive the closing plate 7 and the impeller to rise, then the first motor 14 rotates to drive the impeller to move above the cleaning tank 10, then the electric push rod 6 is elongated to drive the impeller to descend into the cleaning tank 10, then the ultrasonic cleaning of the impeller is carried out through the action of the ultrasonic generator and the transducer, and stubborn oil stains and strong adhesion deposits are deeply and efficiently cleaned. When the cleaning of the impeller is completed, the electric push rod 6 restores the original position to drive the closing plate 7 and the impeller to rise, then the first motor 14 rotates to drive the impeller to move above the cleaning tank 10, then the electric push rod 6 is elongated to drive the impeller to descend into the cleaning tank 10, then the ultrasonic cleaning of the impeller is carried out through the action of the ultrasonic generator and the transducer, and stubborn oil stains and strong adhesion deposits are deeply and efficiently cleaned.

[0033] The cleaning device can preliminarily clean and remove floating dust on the impeller, then deeply clean the impeller through ultrasonic cleaning, and then clean the impeller through spraying, so that the impeller is cleaned through three steps, and the cleaning effect is better.

[0034] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A cleaning device for turbine blades of a thermal power plant steam turbine unit, characterized in that, include: A base plate (1) has two vertical plates (2) fixed at both ends of its surface. A screw (3) is rotatably connected between the top ends of the two vertical plates (2). A threaded sleeve (4) is threaded onto the surface of the screw (3). A connecting plate (5) is fixed on both sides of the threaded sleeve (4). An electric push rod (6) is installed on the connecting plate (5). The output end of the electric push rod (6) passes through the connecting plate (5) and is fixed with a clamping assembly (8). The clamping assembly (8) is used to clamp the impeller. The base plate (1) is fixedly installed with a cleaning box (9), a washing box (10) and a spray box (11) in sequence. The top of the cleaning box (9), the washing box (10) and the spray box (11) are all provided with openings. The cleaning box (9), the washing box (10) and the spray box (11) are used for cleaning and removing dust from the impeller, ultrasonic cleaning and spray cleaning, respectively.

2. The turbine blade cleaning equipment for thermal power plants according to claim 1, characterized in that, There are two sets of electric push rods (6). The output ends of the two sets of electric push rods (6) are fixed with a closed plate (7). The clamping assembly (8) is located at the bottom of the closed plate (7). After the closed plate (7) moves, it can completely cover the top openings of the sweeping box (9), the washing box (10) and the spray box (11).

3. The turbine blade cleaning equipment for thermal power plants according to claim 1, characterized in that, A sliding rod (12) is fixedly connected between the top ends of the two vertical plates (2). The sliding rod (12) is located on the upper side of the screw (3) and is arranged parallel to it. A sliding sleeve (13) is slidably sleeved on the surface of the sliding rod (12). The sliding sleeve (13) is fixedly connected to the screw sleeve (4). A first motor (14) is fixedly connected to the side of one of the vertical plates (2). The output end of the first motor (14) passes through the vertical plate (2) and is fixedly connected to one end of the screw (3).

4. The turbine blade cleaning equipment for thermal power plants according to claim 1, characterized in that, The clamping assembly (8) includes a mounting frame (15) fixed to the bottom of the closed plate (7). A bidirectional lead screw (16) is rotatably connected between the two inner side walls of the mounting frame (15). Two lead screw sleeves (17) are threaded onto the surface of the bidirectional lead screw (16). A clamping rod (18) is fixed to the bottom end of each of the two lead screw sleeves (17). A limiting rod (19) parallel to the bidirectional lead screw (16) is also fixed between the two inner side walls of the mounting frame (15). Two limiting sleeves (20) are slidably sleeved onto the surface of the limiting rod (19). The two limiting sleeves (20) are respectively fixed to the two lead screw sleeves (17).

5. The turbine blade cleaning equipment for thermal power plants according to claim 4, characterized in that, A second motor (21) is fixed to the side of the mounting frame (15). The output end of the second motor (21) extends into the interior of the mounting frame (15) and is fixed to one end of the bidirectional lead screw (16).

6. The turbine blade cleaning equipment for thermal power plants according to claim 1, characterized in that, A third motor (22) is fixed on the bottom wall of the cleaning box (9). A rotating rod (23) is fixed to the output end of the third motor (22). A dust-sweeping disc (24) is fixed to the top of the rotating rod (23). Brush bristles are provided on the upper surface of the dust-sweeping disc (24).

7. The turbine blade cleaning equipment for thermal power plants according to claim 6, characterized in that, The length of the brush bristles is greater than the thickness of the impeller, and the third motor (22) is provided with a dustproof cover.

8. The turbine blade cleaning equipment for thermal power plants according to claim 6, characterized in that, A vacuum cleaner (25) is fixedly installed on the side of the cleaning box (9). The dust inlet end of the vacuum cleaner (25) is connected to a dust inlet pipe (26). The dust inlet pipe (26) extends into the interior of the cleaning box (9) and is connected to multiple vacuum heads.

9. The turbine blade cleaning equipment for thermal power plants according to claim 1, characterized in that, An ultrasonic generator and an ultrasonic transducer are fixedly installed on both sides of the inner side wall of the cleaning tank (10), and a non-corrosive organic solvent is added inside the cleaning tank (10).

10. The turbine blade cleaning equipment for thermal power plants according to claim 1, characterized in that, A water pump (27) is provided on the side of the spray box (11). The water inlet of the water pump (27) is connected to an external water source. The water outlet of the water pump (27) is connected to a water outlet pipe (28). The water outlet pipe (28) extends into the interior of the spray box (11) and is connected to multiple nozzles.

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