An on-line cleaning device for a multistage turbine wheel

Abstract

The application discloses a kind of multistage turbine impeller on-line cleaning device, it is related to turbine impeller technical field, including water tank and cleaning assembly, water tank side is symmetrically provided with cleaning assembly, the cleaning assembly includes sleeve, water tank side is symmetrically provided with sleeve.The application is when using, turbine can be cleaned inside without being disassembled, and the injection angle of cleaning fluid can be automatically adjusted when cleaning, expand cleaning range, ensure cleaning efficiency, cleaning fluid can be recycled, and avoid cleaning fluid to remain in turbine, and in the use process of turbine, cleaning fluid can be heated using the heat in compressed air, air is purified simultaneously, avoid impurities to be discharged to outside with air, and filter screen can be cleaned synchronously, avoid filter screen blockage, and when supplementing cleaning fluid, cleaning fluid can also be mixed automatically, ensure that cleaning fluid is evenly distributed in water tank, and balanced heating can also be ensured.

Description

Technical Field

[0001] This invention relates to the field of turbine impeller technology, specifically to an online cleaning device for multi-stage turbine impellers. Background Technology

[0002] Vacuum systems are a crucial component of papermaking machines. Currently, multi-stage turbine vacuum machines are commonly used in papermaking machines both domestically and internationally. These machines create a vacuum by drawing in gas, which then removes moisture from the pulp, increasing the paper's dryness and facilitating dehydration.

[0003] Turbine vacuum machines have multiple impellers and complex internal flow channels. The impellers are closed, and the pumped gas contains pulp fibers that cannot be completely separated. Under normal circumstances, turbine vacuum machines need to be opened periodically for internal cleaning, which has a certain impact on normal production. If cleaning is not done in time, the baffles (diffuser, return flow device) will become blocked, affecting the normal gas delivery. Pulp fibers will adhere to the impeller surface, which will disrupt the rotor dynamic balance and cause vibration. Summary of the Invention

[0004] The purpose of this invention is to provide an online cleaning device for multi-stage turbine impellers to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an online cleaning device for multi-stage turbine impellers, comprising a water tank and cleaning components. The cleaning components are symmetrically arranged on one side of the water tank. Each cleaning component includes a sleeve. A connecting spring is connected inside the sleeve, and the other end of the connecting spring is connected to a connecting pipe. One end of the connecting pipe is rotatably connected to a spray pipe via a through shaft. A transmission wheel is rotatably connected to one side of the connecting pipe, and a cam plate is connected to one side of the transmission wheel. Limiting clips are symmetrically connected to one end of the connecting pipe, and a limiting frame is engaged between the limiting clips. A limiting groove is formed on the surface of the limiting frame, and a limiting block is connected to one side of the limiting frame. A swing spring is connected to one end of the spray pipe.

[0006] Furthermore, the connecting pipe is L-shaped, and the sleeve is fitted onto the longitudinal section of the connecting pipe. The connecting pipe is elastically connected to the sleeve via a connecting spring.

[0007] Furthermore, the nozzle is slidably connected to the limiting frame via a limiting groove, and the limiting frame is slidably connected to the connecting pipe via a limiting clip. The nozzle is elastically connected to the connecting pipe via a swing spring, and the limiting block is engaged and slidably connected to the cam plate.

[0008] Furthermore, a circulation pump is connected to the top of the water tank, and an air outlet is provided on the upper part of the side wall of the water tank. A water supply pipe is connected to one side of the circulation pump, and a water distribution pipe is symmetrically connected to one side of the water supply pipe. The water distribution pipe is connected to a sleeve, and both the water distribution pipe and the sleeve are installed inside the turbine.

[0009] Furthermore, a filter screen is installed in the lower part of the water tank, and auxiliary heaters are symmetrically arranged in the upper part of the water tank. A drain pipe is installed on the other side wall of the water tank.

[0010] Furthermore, a return air pipe is connected to the lower part of the side wall of the water tank, and a return water tray is connected to the return air pipe via a pipe. One end of the return air pipe is connected to a return air cover, a control valve is connected to one side of the return water tray, and a one-way valve is connected to the other side of the return water tray.

[0011] Furthermore, an agitation component is provided at the other end of the return air pipe. The agitation component includes a vent pipe. The other end of the return air pipe is connected to a vent pipe, and a gas distribution plate is sleeved on the outside of the vent pipe. The gas distribution plate rotates on the return air pipe through the vent pipe.

[0012] Furthermore, the agitation assembly also includes an air outlet pipe, which is connected to the side of the air distribution plate. The air outlet pipes are equidistantly distributed on the air distribution plate, and the end of the air outlet pipe away from the air distribution plate is an elbow.

[0013] Furthermore, the agitation assembly also includes a turntable, one side of which is connected to the gas distribution plate, and scrapers are symmetrically connected around the turntable. The scrapers have symmetrical grooves on the side away from the turntable, and the scrapers are U-shaped.

[0014] Furthermore, the agitation assembly also includes a tension spring, a tension spring is symmetrically connected to the middle of the scraper, and a scraper strip is connected to the other end of the tension spring. Slider blocks are symmetrically connected to both sides of the scraper strip, and the sliders are slidably connected to the scraper strip through a groove. The scraper strip is elastically connected to the scraper strip through the tension spring.

[0015] This invention provides an online cleaning device for multi-stage turbine impellers, which has the following advantages: During use, the turbine can be cleaned internally without disassembling it; the spray angle of the cleaning fluid can be automatically adjusted during cleaning to expand the cleaning range and ensure cleaning efficiency; the cleaning fluid can be recycled, preventing residue from remaining inside the turbine; during turbine operation, the heat from compressed air can be used to heat the cleaning fluid while simultaneously purifying the air, preventing impurities from being discharged to the outside; and the filter screen can be cleaned simultaneously to prevent clogging. When replenishing the cleaning fluid, it can also be automatically mixed to ensure even distribution within the tank and balanced heating.

[0016] 1. When using this invention, the internal parts of the turbine can be cleaned without disassembling it. Furthermore, no external power input is required when cleaning the internal parts of the turbine. The spray angle of the cleaning fluid can be adjusted by the turbine's own power, causing the nozzle to swing repeatedly inside the turbine, expanding the cleaning range and ensuring cleaning efficiency. When not cleaning, the transmission wheel can be disengaged from the shaft, reducing wear on the transmission wheel and shaft and extending the service life of the device.

[0017] 2. During cleaning, the present invention can recycle the cleaning fluid and prevent the cleaning fluid from remaining in the turbine. During the cleaning process and when adding cleaning fluid, the cleaning fluid can be automatically mixed to ensure that the cleaning fluid is evenly distributed in the water tank, thereby ensuring the cleaning effect of the cleaning fluid and avoiding the reduction of cleaning effect due to uneven distribution of cleaning fluid.

[0018] 3. When not cleaning, the present invention can use the heat in the compressed air to heat the cleaning fluid, thereby achieving the effect of heat energy recovery and reducing energy waste. At the same time, it can purify the compressed air, preventing impurities from being discharged to the outside with the air. When stirring the cleaning fluid, it can disperse the air, ensuring the cleaning and heating effects, and simultaneously cleaning the filter screen to prevent the filter screen from becoming clogged and causing the cleaning fluid to be unable to circulate normally. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall three-dimensional structure of an online cleaning device for multi-stage turbine impellers according to the present invention; Figure 2 This is a half-section exploded three-dimensional structural diagram of the cleaning component of a multi-stage turbine impeller online cleaning device according to the present invention; Figure 3 This is a half-sectional three-dimensional structural diagram of an online cleaning device for multi-stage turbine impellers according to the present invention; Figure 4 This is a half-section exploded three-dimensional structural diagram of the water tank of the online cleaning device for multi-stage turbine impellers according to the present invention; Figure 5 This is a half-section three-dimensional exploded view of the air distribution plate of the online cleaning device for a multi-stage turbine impeller according to the present invention; Figure 6 This is a top view of the air distribution plate structure of an online cleaning device for multi-stage turbine impellers according to the present invention.

[0020] In the diagram: 1. Water tank; 2. Cleaning assembly; 201. Sleeve; 202. Connecting spring; 203. Connecting pipe; 204. Spray nozzle; 205. Drive wheel; 206. Cam plate; 207. Limiting clip; 208. Limiting frame; 209. Limiting groove; 210. Limiting block; 211. Swinging spring; 3. Circulation pump; 4. Air outlet; 5. Water supply pipe; 6. Water distribution pipe; 7. Filter screen; 8. Auxiliary heater; 9. Drain pipe; 10. Gas return pipe; 11. Water return pan; 12. Gas return hood; 13. Control valve; 14. Check valve; 15. Agitator assembly; 1501. Vent pipe; 1502. Gas distribution plate; 1503. Gas outlet pipe; 1504. Turntable; 1505. Scraper; 1506. Slide groove; 1507. Tension spring; 1508. Scraper blade; 1509. Sliding block. Detailed Implementation

[0021] Please see Figures 1 to 6 The present invention provides a technical solution: an online cleaning device for multi-stage turbine impellers, including a water tank 1 and a cleaning assembly 2. The cleaning assembly 2 is symmetrically arranged on one side of the water tank 1. The cleaning assembly 2 includes a sleeve 201. A connecting spring 202 is connected inside the sleeve 201. The other end of the connecting spring 202 is connected to a connecting pipe 203. One end of the connecting pipe 203 is rotatably connected to a spray pipe 204 through a through shaft. A transmission wheel 205 is rotatably connected to one side of the connecting pipe 203. A cam plate 206 is connected to one side of the transmission wheel 205. Limiting clips 207 are symmetrically connected to one end of the connecting pipe 203. Limiting frames 208 are engaged between the limiting clips 207. Limiting grooves 209 are formed on the surface of the limiting frame 208. A limiting block 210 is connected to one side of the limiting frame 208. A swing spring 211 is connected to one end of the spray pipe 204.

[0022] Please see Figures 1 to 4The connecting pipe 203 is L-shaped, and the sleeve 201 is fitted onto the longitudinal section of the connecting pipe 203. The connecting pipe 203 is elastically connected to the sleeve 201 via a connecting spring 202. The nozzle 204 is slidably connected to the limiting frame 208 via a limiting groove 209, and the limiting frame 208 is slidably connected to the connecting pipe 203 via a limiting clip 207. The nozzle 204 is elastically connected to the connecting pipe 203 via a swing spring 211. The limiting block 210 is engaged and slidably connected to the cam plate 206. A circulation pump 3 is connected above the water tank 1, and an air outlet 4 is opened on the upper part of the side wall of the water tank 1. The circulation pump 3... A water supply pipe 5 is connected to the side, and a water distribution pipe 6 is symmetrically connected to one side of the water supply pipe 5. The water distribution pipe 6 is connected to the sleeve 201, and both the water distribution pipe 6 and the sleeve 201 are installed inside the turbine. A filter screen 7 is installed in the lower part of the water tank 1, and an auxiliary heater 8 is symmetrically installed in the upper part of the water tank 1. A drain pipe 9 is installed on the other side wall of the water tank 1. A return air pipe 10 is connected to the lower part of the side wall of the water tank 1, and a return water tray 11 is connected to the return air pipe 10 through a pipe. A return air cover 12 is connected to one end of the return air pipe 10. A control valve 13 is connected to one side of the return water tray 11, and a one-way valve 14 is connected to the other side of the return water tray 11. The specific operation is as follows: During use, the turbine can be cleaned internally without disassembling it. Furthermore, no external power input is required during cleaning; the turbine's own power can be used to adjust the spray angle of the cleaning fluid, causing the nozzle 204 to repeatedly oscillate within the turbine, expanding the cleaning range and ensuring cleaning efficiency. When not cleaning, the transmission wheel 205 can be disengaged from the shaft, reducing wear on the transmission wheel 205 and shaft, and extending the device's service life. During cleaning, the cleaning fluid can be recycled, preventing residue from remaining inside the turbine. During cleaning and when adding cleaning fluid, the system automatically mixes the fluid, ensuring even distribution within the water tank 1, thus guaranteeing the cleaning effect and preventing reduced cleaning efficiency due to uneven distribution of the cleaning fluid.

[0023] Please see Figures 5 to 6The other end of the return pipe 10 is provided with an agitator 15, which includes a vent pipe 1501. The other end of the return pipe 10 is connected to the vent pipe 1501, and a distribution plate 1502 is sleeved on the outside of the vent pipe 1501. The distribution plate 1502 rotates on the return pipe 10 through the vent pipe 1501. The agitator 15 also includes an outlet pipe 1503, which is connected to the side of the distribution plate 1502. The outlet pipes 1503 are equidistantly distributed on the distribution plate 1502, and the end of the outlet pipe 1503 away from the distribution plate 1502 is an elbow. The agitator 15 also includes a turntable 1504, which is connected to one side of the distribution plate 1502. A turntable 1504 is connected, and scrapers 1505 are symmetrically connected around the turntable 1504. Slide grooves 1506 are symmetrically opened on the side of the scraper 1505 away from the turntable 1504. The scraper 1505 is U-shaped. The stirring component 15 also includes a tension spring 1507. The tension spring 1507 is symmetrically connected in the middle of the scraper 1505, and a scraper strip 1508 is connected to the other end of the tension spring 1507. Slider blocks 1509 are symmetrically connected on both sides of the scraper strip 1508. The sliders 1509 are engaged and slidably connected to the scraper 1505 through the slide grooves 1506. The scraper strip 1508 is elastically connected to the scraper 1505 through the tension spring 1507. The specific operation is as follows: when not cleaning, the heat in the compressed air can be used to heat the cleaning fluid to achieve the effect of heat recovery and reduce energy waste. At the same time, the compressed air can be purified to prevent impurities from being discharged to the outside with the air. When the cleaning fluid is stirred, the air can be dispersed to ensure the cleaning effect and heating effect, and the filter screen 7 can be cleaned at the same time to prevent the filter screen 7 from being blocked, which would prevent the cleaning fluid from circulating normally.

[0024] In summary, this multi-stage turbine impeller online cleaning device, when in use, first fixes the sleeve 201 and the water distribution pipe 6 inside the turbine, then assembles the turbine, and installs the return water pan 11 and the return air hood 12 onto the turbine. When the turbine is running, the gas carrying impurities enters the turbine, passes through the return air hood 12 into the return air pipe 10, then passes through the vent pipe 1501, and disperses from the gas distribution pan 1502 through the air outlet pipe 1503 into the cleaning fluid in the water tank 1, and finally leaves the water tank 1 from the air outlet 4. The cleaning fluid can then... The gas is compressed to remove impurities from the gas, preventing them from entering the external environment directly. The heat from the compressed gas can heat the cleaning fluid, reducing the temperature difference between the cleaning fluid and the turbine, and reducing the thermal stress inside the turbine during cleaning. If the temperature of the cleaning fluid does not meet the cleaning standard before cleaning, the auxiliary heater 8 is turned on to heat the cleaning fluid until it reaches the set temperature. The filter screen 7 can prevent impurities from moving to the upper part of the water tank 1 and entering the circulation pump 3 with the cleaning fluid, which would damage the circulation pump 3. When the gas leaves the outlet pipe 1503, its reverse thrust causes the outlet pipe 1503 to drive the gas distribution plate 1502 to rotate on the ventilation pipe 1501, thereby causing the outlet pipe 1503 to stir the cleaning liquid and evenly distribute the gas into the cleaning liquid, and evenly heat the cleaning liquid. When adding cleaning liquid, the stirring of the cleaning liquid by the outlet pipe 1503 can also accelerate the mixing of the cleaning liquid. Simply open the drain pipe 9 every once in a while to remove the impurities under the filter screen 7. When the air distribution plate 1502 rotates, the turntable 1504 can rotate together with the air distribution plate 1502, thereby driving the scraper 1505 and scraper 1508 to clean the lower surface of the filter screen 7, preventing impurities from accumulating on the filter screen 7 and causing it to become clogged. The tension spring 1507 can keep the scraper 1508 pressed against the inner wall of the water tank 1, thereby ensuring that the scraper 1505 and scraper 1508 can clean the filter screen 7 without dead corners. The slider 1509 can restrict the scraper 1508 through the slide groove 1506 to prevent the scraper 1508 from deviating when moving on the scraper 1505, thus ensuring the cleaning effect of the scraper 1508. When the inside of the turbine needs cleaning, the circulating pump 3 starts, drawing the heated cleaning solution from the water tank 1 into the water supply pipe 5. The solution then flows through the distribution pipe 6 from each sleeve 201 into the connecting pipe 203, and is sprayed out from the nozzle 204 to rinse the turbine impeller and inner wall. Under water pressure, the connecting pipe 203 drives the drive wheel 205 closer to the turbine shaft, compressing the connecting spring 202. The sleeve 201 restricts the connecting pipe 203, preventing it from tilting during movement. After the drive wheel 205 contacts the shaft, it drives the cam plate 206 to rotate along with the shaft, which in turn drives the limit block 210 to rotate... The limiting frame 208 moves between the limiting cards 207 and drives the nozzle 204 to rotate on the connecting pipe 203 via the slide groove 1506, thereby adjusting the spray angle of the nozzle 204. The limiting cards 207 can restrict the limiting frame 208 to prevent it from tilting during movement. When the nozzle 204 rotates, it can stretch the swing spring 211, allowing the nozzle 204 to apply pressure to the limiting frame 208 via the slide groove 1506, causing the limiting block 210 to stick tightly to the cam plate 206. This allows the cam plate 206 to drive the nozzle 204 to swing repeatedly on the connecting pipe 203, thereby expanding the spray range of the cleaning fluid and ensuring comprehensive cleaning. When cleaning the turbine, the control valve 13 in the return water pan 11 opens synchronously with the circulation pump 3. As the turbine runs, most of the cleaning fluid is drawn out with the airflow and enters the return air pipe 10 from the return air hood 12. The cleaning fluid remaining in the turbine can enter the return water pan 11 through the control valve 13. As the air flows in the return air pipe 10, a pressure difference can be formed at the check valve 14, which draws the cleaning fluid in the return water pan 11 into the return air pipe 10. The check valve 14 can prevent the air from carrying the residual cleaning fluid back into the turbine from the control valve 13, thus preventing the cleaning fluid from remaining in the turbine. After entering the return air pipe 10, the cleaning fluid can enter the water tank 1 for circulation with the airflow. After cleaning is completed, the water pump is turned off, and no further cleaning fluid is injected into the connecting pipe 203. Under the action of the connecting spring 202, the pipe can be reset, and excess cleaning fluid is squeezed out from the nozzle 204. At this time, the drive wheel 205 disengages from the shaft as the connecting pipe 203 is reset, reducing wear on the drive wheel 205 and the shaft. This prevents the drive wheel 205 from still driving the nozzle 204 to swing during normal turbine operation. After the residual cleaning fluid completely enters the return air pipe 10, the control valve 13 is closed. This prevents air from directly entering the return air pipe 10 from the return water pan 11 during turbine operation, which would reduce the degree of gas compression and consequently lower the gas temperature.

[0025] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0026] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only for the purpose of helping to understand the method and core ideas of the present invention. The above descriptions are only preferred embodiments of the present invention. It should be noted that due to the limitations of textual expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of the present invention.

Claims

1. An online cleaning device for multi-stage turbine impellers, characterized in that, The system includes a water tank (1) and a cleaning assembly (2). The cleaning assembly (2) is symmetrically arranged on one side of the water tank (1). The cleaning assembly (2) includes a sleeve (201). The sleeve (201) is symmetrically arranged on one side of the water tank (1), and a connecting spring (202) is connected inside the sleeve (201). The other end of the connecting spring (202) is connected to a connecting pipe (203). One end of the connecting pipe (203) is rotatably connected to a spray pipe (204) via a through shaft. A transmission wheel (205) is rotatably connected to one side of the connecting pipe (203), and a cam plate (206) is connected to one side of the transmission wheel (205). One end of the connecting pipe (203) is symmetrically connected to... A limiting clip (207) is provided, and a limiting frame (208) is engaged between the limiting clips (207). A limiting groove (209) is provided on the surface of the limiting frame (208), and a limiting block (210) is connected to one side of the limiting frame (208). A swing spring (211) is connected to one end of the nozzle (204). A return air pipe (10) is connected to the lower part of the side wall of the water tank (1). An agitator (15) is provided at the other end of the return air pipe (10). The agitator (15) includes an air pipe (1501). An air pipe (1501) is connected to the other end of the return air pipe (10), and an air distribution plate (150) is sleeved on the outside of the air pipe (1501). 2) The gas distribution plate (1502) rotates on the return gas pipe (10) through the air pipe (1501). The stirring component (15) also includes an air outlet pipe (1503). The air distribution plate (1502) is connected to the side of the air outlet pipe (1503). The air outlet pipes (1503) are equidistantly distributed on the gas distribution plate (1502). The end of the air outlet pipe (1503) away from the gas distribution plate (1502) is bent. The stirring component (15) also includes a turntable (1504). The turntable (1504) is connected to one side of the gas distribution plate (1502), and scrapers (1505) are symmetrically connected around the turntable (1504). 505) A symmetrical groove (1506) is provided on the side away from the turntable (1504). The scraper (1505) is U-shaped. The stirring assembly (15) also includes a tension spring (1507). The tension spring (1507) is symmetrically connected in the middle of the scraper (1505), and a scraper strip (1508) is connected to the other end of the tension spring (1507). Slider blocks (1509) are symmetrically connected on both sides of the scraper strip (1508). The sliders (1509) are engaged and slidably connected to the scraper (1505) through the groove (1506). The scraper strip (1508) is elastically connected to the scraper (1505) through the tension spring (1507).

2. The online cleaning device for multi-stage turbine impellers according to claim 1, characterized in that, The connecting pipe (203) is L-shaped, and the sleeve (201) is fitted onto the longitudinal section of the connecting pipe (203). The connecting pipe (203) is elastically connected to the sleeve (201) through a connecting spring (202).

3. The online cleaning device for multi-stage turbine impellers according to claim 1, characterized in that, The nozzle (204) is slidably connected to the limiting frame (208) through the limiting groove (209), and the limiting frame (208) is slidably connected to the connecting pipe (203) through the limiting card (207). The nozzle (204) is elastically connected to the connecting pipe (203) through the swing spring (211), and the limiting block (210) is engaged and slidably connected to the cam plate (206).

4. The online cleaning device for multi-stage turbine impellers according to claim 1, characterized in that, A circulation pump (3) is connected above the water tank (1), and an air outlet (4) is provided on the upper part of the side wall of the water tank (1). A water supply pipe (5) is connected to one side of the circulation pump (3), and a water distribution pipe (6) is symmetrically connected to one side of the water supply pipe (5). The water distribution pipe (6) is connected to the sleeve (201), and both the water distribution pipe (6) and the sleeve (201) are installed inside the turbine.

5. The online cleaning device for multi-stage turbine impellers according to claim 1, characterized in that, A filter screen (7) is provided in the lower part of the water tank (1), and an auxiliary heater (8) is symmetrically provided in the upper part of the water tank (1). A drain pipe (9) is provided on the other side wall of the water tank (1).

6. The online cleaning device for multi-stage turbine impellers according to claim 1, characterized in that, The return air pipe (10) is connected to a return water pan (11) via a pipe. One end of the return air pipe (10) is connected to a return air cover (12). A control valve (13) is connected to one side of the return water pan (11), and a one-way valve (14) is connected to the other side of the return water pan (11).

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