Steam turbine condenser tube bundle cleaning device

Abstract

The invention discloses a steam turbine condenser tube bundle cleaning device which comprises a tube bundle cleaning device body matched with a steam turbine condenser, the top and the bottom of the steam turbine condenser are provided with an inlet end and an outlet end respectively, and the tube bundle cleaning device body comprises a water tank filled with cleaning liquid. A series of structures are arranged, cleaning modes can be automatically switched, washing, friction cleaning and re-washing are sequentially conducted on the interior of the steam turbine condenser tube bundle, after washing, liquid is used for pushing the elastic balls to flow in a self-adaptive mode to automatically conduct friction cleaning on the inner side of the tube bundle, and the method is not affected by the radian of a coiled tube type tube bundle; the tube bundle cleaning device has high applicability, the cleaning effect of the interior of the tube bundle is improved, the filter screen can be automatically cleaned, dredged and discharged after use, the use automation degree and convenience are improved, the tube bundle cleaning device body can be conveniently and flexibly moved, lifted, adjusted, supported and detachably connected, and the tube bundle cleaning device can be conveniently recycled while the use flexibility is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of steam turbine condenser tube bundle cleaning, and specifically to a steam turbine condenser tube bundle cleaning device. Background Technique

[0002] Steam turbine condenser tube bundles have two types: integral coil type and multi-straight tube type. For integral coil type tube bundles, due to their multiple arc bends, usually only simple flushing methods can be used for internal cleaning work. In this regard, as disclosed in a steam turbine condenser tube bundle cleaning and leak detection device with the publication number CN215217340U, which includes a condenser body, a first connecting pipe is fixedly installed on the left side of the condenser body, a first sub-pipe is fixedly installed at the bottom of the first connecting pipe, and a second solenoid valve is fixedly installed on the first sub-pipe. A first solenoid valve is fixedly installed in the first connecting pipe. Its structure is simple and easy to use. It can timely detect the damage problems on the tube bundles in the condenser body and emit an alarm sound to remind the staff to carry out maintenance, thereby avoiding the normal operation of production equipment affected by the failure of the condenser body, reducing production efficiency. At the same time, after the long-term use of the condenser body, it can quickly clean the inner wall of the tube bundles in the condenser body, avoiding the problem of low cleaning efficiency when the traditional condenser body needs to be disassembled from the equipment by the staff before cleaning.

[0003] The above technology sets water supply at one end of the condenser and drainage and filter plate at the other end, and uses the flow of cleaning liquid in the steam turbine condenser tube bundle to form a flushing operation. However, this simple method of using the internal flow of cleaning liquid for flushing has the following defects: 1. Only the method of flushing the inside of the condenser coil with water is used, and it is difficult to effectively clean the impurities adhering to the inner side of the tube, and the cleaning effect is not ideal; 2. There is no structure for automatically cleaning, dredging and discharging sewage from the filter plate after internal cleaning, and manual dredging and sewage discharge operations are required, and the automation is not ideal; 3. The integral and fixed application method with the condenser is difficult to recycle for multiple condensers, with poor flexibility and reduced practicability;

[0004] In order to solve the problems that it is difficult to effectively clean the impurities adhering to the inner side of the tube, it is impossible to automatically clean, dredge and discharge sewage from the filter plate after internal cleaning, and it is difficult to recycle multiple condensers flexibly, we have therefore proposed a steam turbine condenser tube bundle cleaning device to solve the above problems. Summary of the Invention

[0005] The steam turbine condenser tube bundle cleaning device proposed by the present invention solves the problems that it is difficult to effectively clean the impurities adhering to the inner side of the tube, it is impossible to automatically clean, dredge and discharge sewage from the filter plate after internal cleaning, and it is difficult to recycle multiple condensers flexibly.

[0006] To achieve the above object, the present invention provides the following technical solution: a tube bundle cleaning device for a steam turbine condenser, comprising a tube bundle cleaning device body adapted to the steam turbine condenser. An inlet end and an outlet end are respectively provided at the top and bottom of the steam turbine condenser. The tube bundle cleaning device body includes a water tank filled with cleaning liquid inside. A PLC controller is fixedly installed on the left side of the top of the water tank;

[0007] An L-shaped pipe is fixedly penetrated inside the water tank. The top end of the L-shaped pipe is connected and fixed with a first conduit. A ball milling scrubbing assembly is movably sleeved inside the first conduit. The right end of the first conduit and the right end of the L-shaped pipe are connected and fixed with the same plugging and unsealing ball passing assembly electrically connected to the PLC controller. A horizontal pipe is connected and fixed to the top right side and the bottom right side of the plugging and unsealing ball passing assembly. The right ends of the two horizontal pipes are connected and fixed with explosion-proof hoses. One end of each explosion-proof hose is provided with a threaded socket assembly. The two threaded socket assemblies are respectively screwed onto the outside of the inlet end and the outlet end. A switching, redirecting and liquid supply assembly is installed on the water tank and is connected and fixed to the L-shaped pipe and the upper horizontal pipe and is electrically connected to the PLC controller. The switching, redirecting and liquid supply assembly is used for supplying liquid into the upper horizontal pipe and is used for being controlled by the PLC controller to periodically switch to supplying liquid into the L-shaped pipe. The threaded socket assembly is used for flushing the internal tube bundle of the steam turbine condenser when liquid is supplied into the upper horizontal pipe. The ball milling scrubbing assembly is used for frictionally cleaning the internal tube bundle of the steam turbine condenser by self-movement using water pressure when switching to supplying liquid into the L-shaped pipe. The plugging and unsealing ball passing assembly is used for being automatically opened and unsealed by the PLC controller when switching to supplying liquid into the L-shaped pipe to allow the ball milling scrubbing assembly to pass through;

[0008] A self-cleaning sewage return filtering assembly is installed at the bottom of the water tank and is connected and fixed to the top of the lower horizontal pipe. The self-cleaning sewage return filtering assembly is used for filtering and returning the flushing water to the water tank for recycling and is used for self-cleaning and dredging sewage work using the returned water under the control of the PLC controller after cleaning.

[0009] Preferably, the ball milling scrubbing assembly includes a plurality of elastic balls movably sleeved inside the first conduit. A wiping sponge closely and movably attached to the inner wall of the first conduit is adhesively coated on the outside of the elastic balls. The same connecting rope is fixedly connected between the adjacent sides of two adjacent elastic balls.

[0010] Preferably, the plugging and unsealing pigging component includes two fixed boxes. The right ends of the first conduit and the L-shaped pipe are respectively connected and fixed to the left sides of the corresponding fixed boxes. The right inner walls of the upper fixed box and the left inner walls of the lower fixed box are both provided with conical structures. The right sides of the fixed boxes are connected and fixed to the left sides of the corresponding horizontal pipes. A sealing plate is movably sleeved in the fixed box in a sealed manner. The top of the sealing plate slides out above the corresponding fixed box and is fixedly connected with a connecting rod. The front and rear ends of the connecting rod are fixedly connected with the same U-shaped frame. A support seat is fixedly installed on the right side of the water tank and is slidably sleeved outside the lower U-shaped frame. A motor-driven telescopic rod electrically connected to the PLC controller is fixedly installed on the top of the support seat. The extending end of the motor-driven telescopic rod is fixedly connected with a lifting seat. The lifting seat is fixedly connected between the two U-shaped frames. A rectangular guide sleeve is fixedly connected to the top right side of the water tank and is slidably sleeved outside the upper U-shaped frame. The two fixed boxes are respectively located inside the corresponding U-shaped frames.

[0011] Preferably, the threaded socket component includes an internal thread sleeve that is hermetically rotatably sleeved outside the end of the corresponding explosion-proof hose. Handle rods are fixedly connected to both sides of the internal thread sleeve. External threads are provided on the outer sides of the inlet end and the outlet end. The internal thread sleeve is threadedly connected to the corresponding external thread.

[0012] Preferably, the switching and redirecting liquid supply component includes a water pump fixedly installed at the bottom right side of the water tank with its water inlet extending into the interior thereof. The top end of the water outlet of the water pump is connected and fixed with a water pipe. A first solenoid valve is connected and fixed between the top end of the water pipe and the bottom of the upper horizontal pipe. A second solenoid valve is connected and fixed to the left side of the water pipe. The left end of the second solenoid valve is connected and fixed to the top right side of the L-shaped pipe with the same upwardly inclined inclined conduit. The water pump, the first solenoid valve, and the second solenoid valve are all electrically connected to the PLC controller and are controlled by the PLC controller.

[0013] Preferably, the self-purging return water filtering component includes a filtering box fixedly installed on the bottom right side of the water tank. A filter screen is fixedly installed inside the filtering box. A return water pipe with its top end penetrating into the water tank is connected and fixed to the top of the filtering box. A third solenoid valve is connected and fixed to the right side of the filtering box and is located below the filter screen. A first L-shaped conduit is connected and fixed between the right end of the third solenoid valve and the top of the lower horizontal pipe. A fourth solenoid valve is fixedly installed on the top right side of the filtering box. A second L-shaped conduit is connected and fixed between the right end of the fourth solenoid valve and the top of the first L-shaped conduit. The left end of the fourth solenoid valve extends into the filtering box and is connected and fixed with an L-shaped connecting pipe. The bottom end of the L-shaped connecting pipe is connected and fixed with a spray head located above the filter screen. The bottom of the filtering box is provided with a conical structure and is connected and fixed with a sewage solenoid valve. The bottom end of the sewage solenoid valve is connected and fixed with a sewage connection pipe located behind the L-shaped pipe. The third solenoid valve, the fourth solenoid valve, and the sewage solenoid valve are all electrically connected to the PLC controller and are controlled by the PLC controller.

[0014] Preferably, a cleaning reminder lamp is fixedly connected to the front side of the PLC controller, and a storage battery is fixedly installed at the rear side of the top of the water tank. The PLC controller, the cleaning reminder lamp, the electric telescopic rod, the first solenoid valve, the second solenoid valve, the third solenoid valve, the fourth solenoid valve, and the sewage discharge solenoid valve are all electrically connected to the storage battery.

[0015] Preferably, a liquid adding pipe is fixedly communicated with the left side of the top of the water tank. The L-shaped pipe and the first conduit are both transparent pipes, and the inner diameters of the L-shaped pipe, the first conduit, the horizontal pipe, the explosion-proof hose, and the internal tube bundle of the steam turbine condenser are the same.

[0016] Preferably, an annular groove is formed in the inner side of the internal thread sleeve. One side where the two annular grooves repel each other is provided with an opening. Two sealing bearings are fixedly sleeved in the annular groove, and the inner sides of the sealing bearings are adhesively fixed to the outer sides of the corresponding explosion-proof hoses.

[0017] Preferably, a support adjustment and moving assembly for lifting and adjusting and moving and supporting the water tank is further installed on the water tank. The support adjustment and moving assembly includes an L-shaped support plate arranged below the water tank. Universal wheels with locks are rotatably installed at the four corners of the bottom of the L-shaped support plate. Two vertical guide rods are fixedly connected to the inner wall of the bottom of the L-shaped support plate. Vertical conduits fixedly connected to the bottom of the water tank are slidably sleeved on the two vertical guide rods. An electric slide rail with a mobile end fixedly connected to the left side of the water tank is fixedly installed on the inner wall of the left side of the L-shaped support plate. Two L-shaped guide rods are fixedly connected to the top left side of the water tank. The L-shaped support plate is slidably sleeved on the two L-shaped guide rods. A U-shaped handle is fixedly connected to the top left side of the L-shaped support plate. The electric slide rail is electrically connected to the storage battery.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] 1. For this steam turbine condenser tube bundle cleaning device, through the cooperation of the provided PLC controller, water tank, horizontal pipe, explosion-proof hose, threaded socket assembly, self-sewage type return water filtering assembly, and switching and redirecting liquid supply assembly, the inside of the steam turbine condenser is initially flushed, and the flushing cleaning liquid is filtered and recycled.

[0020] 2. The steam turbine condenser tube bundle cleaning device is provided with a PLC controller, a switching and redirecting liquid supply component, an L-shaped tube, a first conduit, a ball grinding and scrubbing component and a plugging and unblocking ball passing component. It can automatically switch the flow direction after preliminary flushing and use liquid force to push the elastic ball to adaptively flow and pass, and frictionally clean the inside of the steam turbine condenser tube bundle. It can also switch again for secondary flushing after friction cleaning, so as to achieve the effect of flushing, friction cleaning and re-flushing the inside of the steam turbine condenser tube bundle in sequence. After flushing, the elastic ball is pushed by liquid to automatically frictionally clean the inside of the tube bundle. The elastic ball is elastic and can be flexibly moved by liquid thrust. It is not affected by the curvature of the coil-type steam turbine condenser tube bundle, has high applicability, improves the cleaning effect of the inside of the tube bundle, and reduces the phenomenon that impurities adhering to the inside of the tube are difficult to effectively clean.

[0021] 3. The steam turbine condenser tube bundle cleaning device can automatically clean and drain the filter screen after use through the cooperation of the PLC controller, cross pipe and self-draining return water filter assembly, so as to avoid affecting the next use, and no personnel are required to disassemble, clean and dredge the device separately, thus improving the degree of automation and convenience of use;

[0022] 4. The steam turbine condenser tube bundle cleaning device, through the cooperation of the support and adjustment moving assembly and the threaded sleeve assembly, is convenient for flexible movement, lifting and lowering adjustment of the support and disassembly and assembly of the tube bundle cleaning device body, thereby improving the flexibility of use and reducing the phenomenon of poor applicability caused by only being used on one steam turbine condenser.

[0023] The present invention is provided with a series of structures, which can automatically switch the cleaning mode and flush, friction clean and flush the inside of the turbine condenser tube bundle in sequence. After flushing, the elastic ball is pushed by liquid to adaptively flow and pass to automatically friction clean the inside of the tube bundle. It is not affected by the curvature of the coil-type tube bundle, has high applicability, improves the cleaning effect inside the tube bundle, and can automatically clean and dredge the filter screen after use, thereby improving the degree of automation and convenience in use, and is convenient for flexible movement, lifting and lowering adjustment of support and disassembly and assembly of the tube bundle cleaning device body, thereby improving the flexibility of use and facilitating its recycling. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic structural diagram of a steam turbine condenser tube bundle cleaning device proposed in Embodiment 1 of the present invention;

[0025] Figure 2 for Figure 1 Schematic diagram of the structure viewed from above;

[0026] Figure 3 This is a schematic diagram of the front cross-sectional structure of a steam turbine condenser tube bundle cleaning device proposed in the first embodiment of the present invention;

[0027] Figure 4 is Figure 3 Schematic diagram of the enlarged structure of part A in

[0028] Figure 5 is Figure 3 Schematic diagram of the enlarged structure of part B in

[0029] Figure 6 is Figure 3 Schematic diagram of the enlarged structure of part C in

[0030] Figure 7 Schematic diagram of the structure of the steam turbine condenser tube bundle cleaning device proposed in the second embodiment of the present invention;

[0031] Figure 8 Front view sectional structure diagram of the steam turbine condenser tube bundle cleaning device proposed in the second embodiment of the present invention.

[0032] In the figure: 1. Steam turbine condenser; 101. Inlet end; 102. Outlet end; 2. Water tank; 201. PLC controller; 202. Cleaning reminder lamp; 3. L-shaped pipe; 301. First conduit; 4. Elastic ball; 401. Wiping sponge; 402. Connecting rope; 5. Fixed box; 501. Sealing plate; 502. Connecting rod; 503. U-shaped frame; 504. Support; 505. Electric telescopic rod; 506. Lifting seat; 507. Rectangular guide sleeve; 6. Horizontal pipe; 601. First solenoid valve; 602. Water pipe; 603. Water pump; 604. Second solenoid valve; 605. Inclined conduit; 7. Explosion-proof hose; 701. Internal thread sleeve; 702. Handle rod; 703. Sealing bearing; 8. Filter box; 801. Filter screen; 802. Return water pipe; 803. Sewage solenoid valve; 804. Sewage connection pipe; 805. Third solenoid valve; 806. First L-shaped conduit; 807. Second L-shaped conduit; 808. Fourth solenoid valve; 809. L-shaped connecting pipe; 810. Sprayer; 9. L-shaped support plate; 901. L-shaped guide rod; 902. Electric slide rail; 903. Guide rod; 904. Vertical conduit; 905. Lockable universal wheel. Detailed implementation method

[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0034] Embodiment 1

[0035] As Figures 1 to 6As shown in the figure, the steam turbine condenser tube bundle cleaning device proposed in this embodiment includes a tube bundle cleaning device body that cooperates with the steam turbine condenser 1. The top and bottom of the steam turbine condenser 1 are respectively provided with an inlet end 101 and an outlet end 102. The tube bundle cleaning device body includes a water tank 2 filled with cleaning liquid inside. On the left side of the top of the water tank 2, a PLC controller 201 is fixedly installed;

[0036] An L-shaped pipe 3 is fixedly penetrated inside the water tank 2. The top end of the L-shaped pipe 3 is connected and fixed with a first conduit 301. A ball milling scrubbing assembly is movably sleeved inside the first conduit 301. The right end of the first conduit 301 and the right end of the L-shaped pipe 3 are connected and fixed with the same plugging and unsealing ball passing assembly electrically connected to the PLC controller 201. The top right side and the bottom right side of the plugging and unsealing ball passing assembly are both connected and fixed with a horizontal pipe 6. The right ends of the two horizontal pipes 6 are both connected and fixed with an explosion-proof hose 7. One end of the explosion-proof hose 7 is provided with a threaded socket assembly. The two threaded socket assemblies are respectively screwed onto the outside of the inlet end 101 and the outlet end 102. The water tank 2 is provided with a switching and redirecting liquid supply assembly that is connected and fixed with the L-shaped pipe 3 and the upper horizontal pipe 6 and is electrically connected to the PLC controller 201; The switching and redirecting liquid supply assembly is used to supply liquid into the upper horizontal pipe 6 and is used to be controlled by the PLC controller 201 to switch to supply liquid into the L-shaped pipe 3 at a fixed time. The threaded socket assembly is used to flush the internal tube bundle of the steam turbine condenser 1 when liquid is supplied into the upper horizontal pipe 6. The ball milling scrubbing assembly is used to frictionally clean the internal tube bundle of the steam turbine condenser 1 by self-movement using water pressure when switching to supply liquid into the L-shaped pipe 3. The plugging and unsealing ball passing assembly is used to be automatically opened and unsealed by the PLC controller 201 when switching to supply liquid into the L-shaped pipe 3 to allow the ball milling scrubbing assembly to pass through;

[0037] The bottom of the water tank 2 is provided with a self-draining type return water filtering assembly that is connected and fixed with the top of the lower horizontal pipe 6; The self-draining type return water filtering assembly is used to filter and recycle the flushing water back into the water tank 2 and is used to self-clean and dredge the sewage using the returned water under the control of the PLC controller 201 after cleaning.

[0038] Specifically, the ball milling and scrubbing assembly includes a plurality of elastic balls 4 movably sleeved in the first conduit 301. A wiping sponge 401 that is adhesively coated on the outer side of the elastic ball 4 and is in close movable fit with the inner wall of the first conduit 301. A connecting rope 402 is fixedly connected between the adjacent sides of two adjacent elastic balls 4. The elastic balls 4, the wiping sponges 401 and the connecting ropes 402 are arranged in cooperation. When the liquid supply is switched to the L-shaped tube 3, the liquid continues to enter the first conduit 301. The continuously supplied liquid pushes the plurality of elastic balls 4 to move rightward into the upper horizontal tube 6, and then enters the tube bundle of the steam turbine condenser 1 through the upper explosion-proof hose 7. The elastic balls 4 drive the corresponding wiping sponges 401 to frictionally clean the inner side of the tube bundle. Under the continuous push of the liquid, the elastic balls 4 then flow back to the L-shaped tube 3 through the lower explosion-proof hose 7 and the horizontal tube 6, and enter the first conduit 301 again for the next cycle of passing and friction cleaning. By using the method of automatically frictionally cleaning the inner side of the tube bundle by the push of the liquid after flushing, the cleaning effect inside the tube bundle is improved.

[0039] Further, the plugging and unsealing and ball passing assembly includes two fixed boxes 5. The right end of the first conduit 301 and the right end of the L-shaped tube 3 are respectively connected and fixed to the left side of the corresponding fixed box 5. The right inner wall of the upper fixed box 5 and the left inner wall of the lower fixed box 5 are both arranged in a conical structure. The right side of the fixed box 5 is connected and fixed to the left side of the corresponding horizontal tube 6. A sealing plate 501 is hermetically and movably sleeved in the fixed box 5. The top of the sealing plate 501 slides out above the corresponding fixed box 5 and is fixedly connected with a connecting rod 502. A rectangular through hole is opened on the top inner wall of the fixed box 5. The outer side of the sealing plate 501 is adhesively coated with a sealing rubber sheet, and the outer side of the sealing rubber sheet is in sliding fit and close contact with the inner wall of the corresponding fixed box 5 and the inner wall of the rectangular through hole. The front and rear ends of the connecting rod 502 are fixedly connected with the same U-shaped frame 503. A support 504 that is slidably sleeved on the outer side of the lower U-shaped frame 503 is fixedly installed on the right side of the water tank 2. A rectangular guide hole that is in sliding contact with the outer side of the lower U-shaped frame 503 is opened on the top of the support 504, which has the effect of allowing the lower U-shaped frame 503 to pass through and guiding its vertical sliding. An electric telescopic rod 505 that is electrically connected to the PLC controller 201 is fixedly installed on the top of the support 504. The extending end of the electric telescopic rod 505 is fixedly connected with a lifting seat 506, and the lifting seat 506 is fixedly connected between the two U-shaped frames 503. A rectangular guide sleeve 507 that is slidably sleeved on the outer side of the upper U-shaped frame 503 is fixedly connected to the top right side of the water tank 2. The two fixed boxes 5 are respectively located inside the corresponding U-shaped frames 503.

[0040] The provided fixed box 5, sealing plate 501, connecting rod 502, U-shaped frame 503, support 504, electric telescopic rod 505, lifting seat 506 and rectangular guide sleeve 507 cooperate. Using the PLC controller 201 pre-programmed to set that when controlling the switching of the liquid flow direction to supply liquid into the L-shaped pipe 3, the electric telescopic rod 505 is controlled to start forward, and pre-set that when controlling the switching to the initial state to supply liquid into the upper horizontal pipe 6, the electric telescopic rod 505 is controlled to start in reverse to reset. When switching the liquid flow direction to supply liquid into the L-shaped pipe 3, the PLC controller 201 controls the electric telescopic rod 505 to start forward, making it drive the lifting seat 506 to move upward. The lifting seat 506 drives the two U-shaped frames 503 to move upward. The U-shaped frame 503 drives the sealing plate 501 to move upward through the corresponding connecting rod 502 to unseal the inside of the fixed box 5 for the elastic ball 4 to pass through. And when subsequently switching to the initial state to supply liquid into the upper horizontal pipe 6 and controlling the electric telescopic rod 505 to start in reverse to reset, it drives the two sealing plates 501 to move downward and back to block the inside of the two fixed boxes 5, so as to avoid the phenomenon that the elastic ball 4 continues to flow to the right after being retracted, achieving the effect of flexibly switching and applying between flushing and scrubbing. By flushing first, then scrubbing, and finally flushing again, the cleaning effect of the internal tube bundle of the steam turbine condenser 1 is effectively improved.

[0041] Furthermore, the threaded socket assembly includes an internal thread sleeve 701 that is hermetically rotatably sleeved on the outer side of the corresponding explosion-proof hose 7 end. An annular groove is provided inside the internal thread sleeve 701. One side of the two mutually repulsive annular grooves is set as an opening. Two sealing bearings 703 are fixedly sleeved in the annular groove. The inner side of the sealing bearing 703 is adhesively fixed to the outer side of the corresponding explosion-proof hose 7, achieving the effect of hermetically and rotatably installing the internal thread sleeve 701. Handle rods 702 are fixedly connected to both sides of the internal thread sleeve 701. External threads are provided on the outer sides of the inlet end 101 and the outlet end 102. The internal thread sleeve 701 is threadedly screwed onto the corresponding external thread; the provided internal thread sleeve 701 and handle rod 702 cooperate to threadedly screw the two internal thread sleeves 701 onto the inlet end 101 and the outlet end 102 respectively, enabling communication for water supply or the passage of the elastic ball 4, and using the threaded connection method to facilitate subsequent separation by simply rotating the direction, facilitating the connection and separation work.

[0042] Furthermore, the switching and redirecting liquid supply assembly includes a water pump 603 fixedly installed at the right bottom of the water tank 2 with its water inlet extending into the interior thereof. At the top end of the water outlet of the water pump 603, a water pipe 602 is fixedly connected. Between the top end of the water pipe 602 and the bottom of the upper horizontal pipe 6, a first electromagnetic valve 601 is fixedly connected. On the left side of the water pipe 602, a second electromagnetic valve 604 is fixedly connected. Between the left end of the second electromagnetic valve 604 and the top right of the L-shaped pipe 3, the same upwardly inclined inclined conduit 605 is fixedly connected. The water pump 603, the first electromagnetic valve 601, and the second electromagnetic valve 604 are all electrically connected to the PLC controller 201 and controlled by the PLC controller 201. Among them, the water pump 603 is located within the lower U-shaped bracket 503 and does not contact its inner side; the arranged water pump 603, water pipe 602, first electromagnetic valve 601, second electromagnetic valve 604, and inclined conduit 605 cooperate. The initial state is that the PLC controller 201 controls the first electromagnetic valve 601 to open. By presetting the PLC controller 201 to control the switching time and interval of the first electromagnetic valve 601 and the second electromagnetic valve 604, such as setting the switching interval time to three minutes. After the first electromagnetic valve 601 is opened for three minutes, the PLC controller 201 controls the first electromagnetic valve 601 to close and controls the second electromagnetic valve 604 to open. After another three minutes, the PLC controller 201 controls the first electromagnetic valve 601 to open and controls the second electromagnetic valve 604 to close for reset. The water pump 603 is used to pump the cleaning liquid and pump it into the water pipe 602. When the first electromagnetic valve 601 is opened, the liquid is supplied into the upper horizontal pipe 6. When the second electromagnetic valve 604 is opened, the liquid is changed to be supplied into the L-shaped pipe 3 obliquely upward through the second electromagnetic valve 604 and the inclined conduit 605, achieving the effect of timing switching to supply liquid into the L-shaped pipe 3 and achieving the effect of automatically alternating the use of flushing and scrubbing.

[0043] Further, the self-draining backwater filtration assembly includes a filter box 8 fixedly installed on the right side of the bottom of the water tank 2. A filter screen 801 is fixedly installed inside the filter box 8. A return water pipe 802 with its top end penetrating into the water tank 2 is fixedly connected and communicated at the top of the filter box 8. A third solenoid valve 805 located below the filter screen 801 is fixedly connected and communicated on the right side of the filter box 8. A first L-shaped conduit 806 is fixedly connected and communicated between the right end of the third solenoid valve 805 and the top of the lower horizontal pipe 6. A fourth solenoid valve 808 is fixedly installed at the top right of the filter box 8. A second L-shaped conduit 807 is fixedly connected and communicated between the right end of the fourth solenoid valve 808 and the top of the first L-shaped conduit 806. The left end of the fourth solenoid valve 808 extends into the filter box 8 and is fixedly connected and communicated with an L-shaped connecting pipe 809. A spray head 810 located above the filter screen 801 is fixedly connected and communicated at the bottom end of the L-shaped connecting pipe 809. The bottom of the filter box 8 is arranged in a conical structure and is fixedly connected and communicated with a sewage discharge solenoid valve 803. A sewage discharge connecting pipe 804 located behind the L-shaped pipe 3 is fixedly connected and communicated at the bottom end of the sewage discharge solenoid valve 803. The third solenoid valve 805, the fourth solenoid valve 808, and the sewage discharge solenoid valve 803 are all electrically connected to the PLC controller 201 and are controlled by the PLC controller 201. The provided filter box 8, filter screen 801, return water pipe 802, sewage discharge solenoid valve 803, sewage discharge connecting pipe 804, third solenoid valve 805, first L-shaped conduit 806, second L-shaped conduit 807, fourth solenoid valve 808, L-shaped connecting pipe 809, and spray head 810 cooperate. The PLC controller 201 is pre-set to control the opening of the third solenoid valve 805 during flushing and to control its closing when switching the liquid flow direction for scrubbing, and to set that after switching three times to form flushing, scrubbing, and re-flushing, the third solenoid valve 805 is controlled to close, the fourth solenoid valve 808 is controlled to open, and the sewage discharge solenoid valve 803 is controlled to open, and after an interval of thirty seconds, it is reset to restore the initial shutdown state. During flushing, when the liquid flows back into the lower horizontal pipe 6 through the lower explosion-proof hose 7, the liquid sequentially enters the filter box 8 through the first L-shaped conduit 806 and the third solenoid valve 805, is filtered by the filter screen 801 to remove impurities, and then flows back into the water tank 2 through the return water pipe 802 for recycling. After reaching the set three flushing and scrubbing switches, the PLC controller 201 controls the third solenoid valve 805 to close, and controls the fourth solenoid valve 808 and the sewage discharge solenoid valve 803 to open. At this time, the returned water enters the second L-shaped conduit 807 through the first L-shaped conduit 806, and then is supplied into the spray head 810 through the L-shaped connecting pipe 809 for downward spraying to automatically backwash and dredge the filter screen 801. The cleaned sewage is discharged downward through the sewage discharge solenoid valve 803. After reaching the set cleaning time of thirty seconds, the PLC controller 201 controls the entire device to reset to restore the initial shutdown state, achieving the effects of filtering and recycling the flushing water and automatically cleaning, dredging, and discharging sewage from the filter screen 801 after use, avoiding affecting the next use work, and improving the degree of automation and convenience of use.

[0044] Furthermore, a cleaning reminder light 202 is fixed and electrically connected to the front side of the PLC controller 201, a battery is fixedly installed on the top rear side of the water tank 2, and the PLC controller 201, the cleaning reminder light 202, the electric telescopic rod 505, the first solenoid valve 601, the second solenoid valve 604, the third solenoid valve 805, the fourth solenoid valve 808 and the sewage discharge solenoid valve 803 are all electrically connected to the battery; the cleaning reminder light 202 is used to be controlled to turn on when the PLC controller 201 controls cleaning, unblocking and sewage discharge, to clearly remind personnel that they are in the unblocking and sewage discharge state.

[0045] Furthermore, a liquid adding pipe is fixedly connected to the left side of the top of the water tank 2, the L-shaped tube 3 and the first conduit 301 are both transparent tubes, and the inner diameters of the L-shaped tube 3, the first conduit 301, the transverse tube 6, the explosion-proof hose 7 and the internal tube bundle of the turbine condenser 1 are all the same.

[0046] The present embodiment can automatically switch the cleaning mode and sequentially flush, friction clean and flush the inside of the tube bundle of the steam turbine condenser 1. After flushing, the elastic ball 4 is pushed by liquid to adaptively flow and automatically friction clean the inside of the tube bundle. It is not affected by the curvature of the tube bundle of the coil-type steam turbine condenser 1, has high applicability, improves the cleaning effect of the inside of the tube bundle, and can automatically clean and drain the filter 801 after use, thereby improving the degree of automation and convenience of use.

[0047] The method of using the present embodiment is as follows: when in use, firstly, the two internal threaded sleeves 701 are respectively screwed on the inlet end 101 and the outlet end 102, and the PLC controller 201 is used to preset the first solenoid valve 601, the water pump 603 and the third solenoid valve 805 to be turned on during flushing, and the PLC controller 201 is used to preset the switching time and interval of the first solenoid valve 601 and the second solenoid valve 604, such as setting the switching interval time to three minutes. After the first solenoid valve 601 is turned on for three minutes, the PLC controller 201 controls the first solenoid valve 601 to be closed and controls the second solenoid valve 604 to be opened. After another three minutes, the PLC controller 201 controls The first solenoid valve 601 is opened, and the second solenoid valve 604 is controlled to be closed and reset, and the PLC controller 201 is pre-programmed to control the electric telescopic rod 505 to start forward when the liquid flow direction is switched to supply liquid into the L-shaped tube 3, and is pre-set to control the electric telescopic rod 505 to start and reset in the reverse direction when the control is switched to the initial state to supply liquid into the upper horizontal tube 6, and the PLC controller 201 is pre-set to control the third solenoid valve 805 to close, the cleaning prompt light 202 to turn on, the fourth solenoid valve 808 to turn on, and the sewage solenoid valve 803 to turn on after switching three times to form flushing, scrubbing and re-flushing, and reset after an interval of thirty seconds to restore the initial shutdown state;

[0048] During flushing, the PLC controller 201 first controls the water pump 603, the first solenoid valve 601, and the third solenoid valve 805 to open. The water pump 603 extracts the cleaning liquid in the water tank 2 and pumps it into the water pipe 602. At this time, the cleaning liquid is supplied into the upper horizontal pipe 6 through the first solenoid valve 601. The cleaning liquid enters the steam turbine condenser 1 through the upper explosion-proof hose 7 and the inlet end 101, and flows through the internal pipes for flushing. The cleaning liquid then enters the lower horizontal pipe 6 through the outlet end 102 and the lower explosion-proof hose 7. The liquid sequentially enters the filter box 8 through the first L-shaped conduit 806 and the third solenoid valve 805, is filtered by the filter screen 801 to block impurities, and then flows back to the water tank 2 through the return pipe 802 for recycling, achieving the effect of initially flushing the steam turbine condenser 1 and filtering and recycling the flushing cleaning liquid;

[0049] After flushing reaches the set three minutes, the PLC controller 201 automatically controls the first solenoid valve 601 to close, the second solenoid valve 604 to open, and the electric telescopic rod 505 to start forward. At this time, the electric telescopic rod 505 drives the lifting seat 506 to move upward. The lifting seat 506 drives the two U-shaped frames 503 to move upward. The U-shaped frames 503 drive the sealing plate 501 to move upward through the corresponding connecting rods 502 to unseal the inside of the fixed box 5, providing a space for the elastic balls 4 to pass through. And at this time, the cleaning liquid pumped into the water pipe 602 is changed to be supplied into the L-shaped pipe 3 obliquely upward through the second solenoid valve 604 and the inclined conduit 605 in sequence. The effect of supplying liquid obliquely upward can form an upward thrust, so that the liquid is supplied upward into the first conduit 301. The continuously supplied liquid pushes the plurality of elastic balls 4 to move rightward through the inside of the upper fixed box 5 into the upper horizontal pipe 6, and then enters the tube bundle of the steam turbine condenser 1 through the upper explosion-proof hose 7 for passage. The elastic balls 4 drive the corresponding wiping sponges 401 to frictionally clean the inner side of the tube bundle. Under the continuous push of the liquid, the elastic balls 4 then flow back to the L-shaped pipe 3 through the lower explosion-proof hose 7 and the horizontal pipe 6, and enter the first conduit 301 again for the next cycle of passage and friction cleaning work. After another three minutes, the PLC controller 201 controls the first solenoid valve 601 to open and the second solenoid valve 604 to close for reset, and again forms a separate flushing of the inside of the tube bundle of the steam turbine condenser 1, achieving the effect of automatically switching to sequentially flushing, friction cleaning, and flushing again the inside of the tube bundle of the steam turbine condenser 1. And by the method of using the liquid to push the elastic balls 4 to automatically frictionally clean the inner side of the tube bundle after flushing, and using the elastic balls 4 with elasticity and flexible movement under the liquid thrust, it is not affected by the curvature of the tube bundle of the coiled steam turbine condenser 1, has high applicability, improves the cleaning effect inside the tube bundle, and reduces the phenomenon that the impurities adhering to the inner side of the tube are difficult to effectively clean;

[0050] In addition, it should be noted that since both the L-shaped pipe 3 and the first conduit 301 are transparent pipes, after the flow friction cleaning, personnel can also observe whether the elastic ball 4 is discharged. When it is not discharged, personnel can temporarily control the PLC controller 201 to extend the time briefly to allow it to be discharged into the first conduit 301, so as to avoid remaining inside the steam turbine condenser 1.

[0051] After three switches formed by flushing, friction cleaning, and re-flushing, the PLC controller 201 controls the third solenoid valve 805 to close, and controls the fourth solenoid valve 808, the cleaning indicator light 202, and the sewage discharge solenoid valve 803 to open. At this time, the reflux water is transformed into flowing into the second L-shaped conduit 807 through the first L-shaped conduit 806, and then is supplied into the nozzle 810 through the L-shaped connecting pipe 809 for downward spraying to automatically backflush and dredge the filter screen 801. The sewage for cleaning is discharged downward successively through the sewage discharge solenoid valve 803 and the sewage discharge connecting pipe 804. Personnel only need to connect a hose for outward drainage to the bottom end of the sewage discharge connecting pipe 804 to perform designated sewage discharge. The cleaning indicator light 202 clearly indicates that it is in the state of cleaning, dredging, and sewage discharge. After reaching the set cleaning time of 30 seconds, the PLC controller 201 controls the entire device to reset to restore the initial shutdown state, achieving the effect of automatically cleaning, dredging, and discharging the filter screen 801 after use, avoiding affecting the next use, and eliminating the need for personnel to separately disassemble, clean, and dredge, improving the automation degree and convenience of use; after use, rotate the two internal thread sleeves 701 to separate them from the inlet end 101 and the outlet end 102 respectively, and then the device can be taken away. Through the separate use method with detachable connection application, it is convenient to recycle the main body of the tube bundle cleaning device.

[0052] Embodiment 2

[0053] As Figures 7 to 8As shown in the figure, on the basis of the first embodiment, the difference between this embodiment and the first embodiment is that: a support and adjustment moving component for lifting, adjusting and moving the support of the water tank 2 is further installed on the water tank 2. The support and adjustment moving component includes an L-shaped support plate 9 arranged below the water tank 2. Universal lockable wheels 905 are rotatably installed at the four corners of the bottom of the L-shaped support plate 9. Two vertical guide rods 903 are fixedly connected to the inner wall of the bottom of the L-shaped support plate 9. Vertical guide tubes 904 fixedly connected to the bottom of the water tank 2 are slidably sleeved on the two vertical guide rods 903. Among them, a limiting hole is opened on the left inner wall of the vertical guide tube 904, and a limiting block slidably connected to the corresponding limiting hole is fixedly connected to the left side of the vertical guide rod 903, which has the effect of limiting and preventing the vertical guide tube 904 from falling off. An electric slide rail 902 with a mobile end fixedly connected to the left side of the water tank 2 is fixedly installed on the left inner wall of the L-shaped support plate 9. Two L-shaped guide rods 901 are fixedly connected to the top left of the water tank 2. The L-shaped support plate 9 is slidably sleeved on the two L-shaped guide rods 901. Among them, two vertical guide grooves respectively slidably sleeved on the outer sides of the corresponding L-shaped guide rods 901 are opened on the top of the L-shaped support plate 9 for vertically sliding and guiding the L-shaped guide rods 901. A U-shaped handle is fixedly connected to the top left of the L-shaped support plate 9. The electric slide rail 902 is electrically connected to the storage battery.

[0054] This embodiment facilitates the flexible movement, lifting and adjustment of the support of the tube bundle cleaning device body alone. Combined with its convenient threaded connection and separation with the steam turbine condenser 1, it improves the flexibility of use and facilitates its recycling.

[0055] The usage method of this embodiment is as follows: on the basis of the functions of the first embodiment, the difference from the first embodiment is that it also has the following effects; among them, the electric slide rail 902, the L-shaped support plate 9 and the universal lockable wheels 905 can support the water tank 2 and enable personnel to move it before and after use. The electric slide rail 902 can lift and adjust the water tank 2 according to the height of different steam turbine condensers 1. When the water tank 2 is lifted, it drives the vertical guide tube 904 to slide vertically on the vertical guide rod 903 to perform vertical guiding work, realizing the effect of conveniently and independently moving, lifting and adjusting the support of the tube bundle cleaning device body, improving the flexibility of use, and reducing the phenomenon of poor applicability caused by only being used on one steam turbine condenser 1.

[0056] Among them, the PLC controller 201, the first solenoid valve 601, the second solenoid valve 604, the water pump 603, the third solenoid valve 805, the fourth solenoid valve 808, the sewage solenoid valve 803 and the electric telescopic rod 505 in the present invention are well-known to those skilled in the art, belonging to conventional means or common general knowledge. Those skilled in the art can make corresponding selections according to their needs or in accordance with the matching of the corresponding pipeline sizes. In addition, the PLC controller 201 is used to control the corresponding start or stop of the first solenoid valve 601, the second solenoid valve 604, the water pump 603, the third solenoid valve 805, the fourth solenoid valve 808, the sewage solenoid valve 803 and the electric telescopic rod 505 according to the switching time and number of times. Just program and control according to the first-stage setting process in the above method, which is a basic programming parameter numerical control method well-known to those skilled in the art and all belong to conventional means or common general knowledge, and will not be elaborated here.

[0057] As mentioned above, only the preferred specific embodiments of the present invention are described, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A steam turbine condenser tube bundle cleaning device, comprising a tube bundle cleaning device body matched with a steam turbine condenser (1), wherein the top and bottom of the steam turbine condenser (1) are respectively provided with an inlet end (101) and an outlet end (102), characterized in that: The tube bundle cleaning device body comprises a water tank (2) filled with cleaning liquid, and a PLC controller (201) is fixedly installed on the left side of the top of the water tank (2); An L-shaped tube (3) is fixedly passed through the water tank (2), the top end of the L-shaped tube (3) is connected and fixed with a first conduit (301), a ball grinding and scrubbing assembly is movably sleeved in the first conduit (301), the right end of the first conduit (301) and the right end of the L-shaped tube (3) are connected and fixed with a same blocking and unblocking ball assembly electrically connected to the PLC controller (201), the right top and right bottom of the blocking and unblocking ball assembly are connected and fixed with a transverse tube (6), the right ends of the two transverse tubes (6) are connected and fixed with explosion-proof hoses (7), one end of the explosion-proof hose (7) is installed with a threaded sleeve assembly, the two threaded sleeve assemblies are respectively screwed on the outside of the inlet end (101) and the outlet end (102), and a switching and redirecting liquid supply assembly is installed on the water tank (2), which is connected and fixed with the L-shaped tube (3) and the upper transverse tube (6) and electrically connected to the PLC controller (201); A self-draining water return filter assembly is installed at the bottom of the water tank (2) and is connected and fixed to the top of the horizontal pipe (6) below.

2. The steam turbine condenser tube bundle cleaning device according to claim 1, characterized in that: The ball grinding and scrubbing assembly comprises a plurality of elastic balls (4) movably sleeved in a first conduit (301); the outer sides of the elastic balls (4) are bonded and coated with a wiping sponge (401) which is tightly and movably fitted to the inner wall of the first conduit (301); and the adjacent sides of two adjacent elastic balls (4) are fixedly connected by a same connecting rope (402).

3. The steam turbine condenser tube bundle cleaning device according to claim 1, characterized in that: The blocking and unblocking ball assembly comprises two fixed boxes (5), the right end of the first conduit (301) and the right end of the L-shaped tube (3) are respectively connected and fixed to the left side of the corresponding fixed box (5), the right inner wall of the upper fixed box (5) and the left inner wall of the lower fixed box (5) are both arranged as conical structures, the right side of the fixed box (5) is connected and fixed to the left side of the corresponding transverse tube (6), a sealing movable sleeve is provided in the fixed box (5) with a sealing plate (501), the top of the sealing plate (501) slides out to the top of the corresponding fixed box (5) and is fixedly connected to a connecting rod (502); The front and rear ends of the connecting rod (502) are fixedly connected to the same U-shaped frame (503); a support (504) is fixedly installed on the right side of the water tank (2) and is slidably mounted on the outside of the U-shaped frame (503) below; an electric telescopic rod (505) electrically connected to the PLC controller (201) is fixedly installed on the top of the support (504); the extended end of the electric telescopic rod (505) is fixedly connected to a lifting seat (506); the lifting seat (506) is fixedly connected between the two U-shaped frames (503); a rectangular guide sleeve (507) is fixedly connected to the top of the right side of the water tank (2) and is slidably mounted on the outside of the U-shaped frame (503) above; and two fixed boxes (5) are respectively located in corresponding U-shaped frames (503).

4. The steam turbine condenser tube bundle cleaning device according to claim 1, characterized in that: The threaded sleeve assembly comprises an internal threaded sleeve (701) which is sealingly rotatably sleeved on the outer side of the end of the corresponding explosion-proof hose (7), handle bars (702) are fixedly connected to both sides of the internal threaded sleeve (701), external threads are provided on the outer sides of the inlet end (101) and the outlet end (102), and the internal threaded sleeve (701) is threadedly screwed on the corresponding external threads.

5. The steam turbine condenser tube bundle cleaning device according to claim 1, characterized in that: The switching and redirecting liquid supply component comprises a water pump (603) fixedly mounted on the right bottom of the water tank (2) and with a water inlet extending into the interior thereof; a water pipe (602) is fixedly connected to the top of the water outlet of the water pump (603); a first solenoid valve (601) is fixedly connected between the top of the water pipe (602) and the bottom of the upper horizontal pipe (6); a second solenoid valve (604) is fixedly connected to the left of the water pipe (602); a same inclined guide tube (605) arranged to be tilted upward is fixedly connected between the left end of the second solenoid valve (604) and the right top of the L-shaped pipe (3); the water pump (603), the first solenoid valve (601) and the second solenoid valve (604) are all electrically connected to and controlled by the PLC controller (201).

6. The steam turbine condenser tube bundle cleaning device according to claim 1, characterized in that: The self-draining water return filter assembly comprises a filter box (8) fixedly mounted on the right side of the bottom of the water tank (2); a filter screen (801) is fixedly mounted inside the filter box (8); a water return pipe (802) whose top penetrates into the water tank (2) is fixedly connected to the top of the filter box (8); a third solenoid valve (805) located below the filter screen (801) is fixedly connected to the right side of the filter box (8); a first L-shaped conduit (806) is fixedly connected between the right end of the third solenoid valve (805) and the top of the horizontal pipe (6) below; a fourth solenoid valve (808) is fixedly mounted on the top of the right side of the filter box (8); a first L-shaped conduit (806) is fixedly connected between the right end of the third solenoid valve (805) and the top of the first L-shaped conduit (806); A second L-shaped conduit (807) is connected and fixed thereto; the left end of the fourth solenoid valve (808) extends into the filter box (8) and is connected and fixed thereto with an L-shaped connecting pipe (809); the bottom end of the L-shaped connecting pipe (809) is connected and fixed thereto with a nozzle (810) located above the filter screen (801); the bottom of the filter box (8) is configured as a conical structure and is connected and fixed thereto with a sewage discharge solenoid valve (803); the bottom end of the sewage discharge solenoid valve (803) is connected and fixed thereto with a sewage discharge connecting pipe (804) located behind the L-shaped pipe (3); the third solenoid valve (805), the fourth solenoid valve (808) and the sewage discharge solenoid valve (803) are all electrically connected to the PLC controller (201) and are controlled by the PLC controller (201).

7. The steam turbine condenser tube bundle cleaning device according to claim 6, characterized in that: A cleaning reminder light (202) is fixed and electrically connected to the front side of the PLC controller (201); a storage battery is fixedly installed on the top rear side of the water tank (2); and the PLC controller (201), the cleaning reminder light (202), the electric telescopic rod (505), the first solenoid valve (601), the second solenoid valve (604), the third solenoid valve (805), the fourth solenoid valve (808) and the sewage discharge solenoid valve (803) are all electrically connected to the storage battery.

8. The steam turbine condenser tube bundle cleaning device according to claim 1, characterized in that: A liquid adding pipe is connected and fixed to the left side of the top of the water tank (2); the L-shaped pipe (3) and the first conduit (301) are both transparent pipes; and the inner diameters of the L-shaped pipe (3), the first conduit (301), the transverse pipe (6), the explosion-proof hose (7) and the internal pipe bundle of the steam turbine condenser (1) are all the same.

9. The steam turbine condenser tube bundle cleaning device according to claim 4, characterized in that: An annular groove is provided on the inner side of the internal threaded sleeve (701), and the two opposing sides of the annular grooves are both set to be open. Two sealing bearings (703) are fixedly provided in the annular grooves, and the inner sides of the sealing bearings (703) are bonded and fixed to the outer sides of the corresponding explosion-proof hoses (7).

10. The steam turbine condenser tube bundle cleaning device according to claim 7, characterized in that: The water tank (2) is also provided with a support and adjustment moving assembly for lifting, adjusting and supporting the water tank (2). The support and adjustment moving assembly comprises an L-shaped support plate (9) arranged below the water tank (2). The four bottom corners of the L-shaped support plate (9) are rotatably provided with universal wheels (905) with locks. Two vertical guide rods (903) are fixedly connected to the inner wall of the bottom of the L-shaped support plate (9). The two vertical guide rods (903) are slidably sleeved with vertical guide tubes (904) fixedly connected to the bottom of the water tank (2). An electric slide rail (902) with a moving end fixedly connected to the left side of the water tank (2) is fixedly installed on the left inner wall of the L-shaped support plate (9). Two L-shaped guide rods (901) are fixedly connected to the top of the left side of the water tank (2). The L-shaped support plate (9) is slidably sleeved on the two L-shaped guide rods (901). A U-shaped handle is fixedly connected to the top of the left side of the L-shaped support plate (9). The electric slide rail (902) is electrically connected to a storage battery.

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