Cleaning device for inner wall of boiler of thermal power plant

Abstract

The utility model relates to the technical field of medical apparatus and instruments, in particular to a cleaning device for the inner wall of a boiler of a thermal power plant, which comprises a box body, a cleaning device, a cleaning device and a control device, the inner wall of the bottom of the box body is provided with a storage box, and the storage box is used for storing a descaling agent; the flushing assembly is arranged on the inner wall of the bottom of the box body, and the flushing assembly is used for flushing boiler dirt; when the pumping assembly works, the two ends of the pipe body can conduct pumping and suction work at the same time, then output of clear water in the box body and negative pressure in the negative pressure pipe are achieved, the output clear water is matched with flushing equipment, and the flushing efficiency is improved. According to the boiler inner wall scale cleaning device, scale on the inner wall of a boiler is flushed, waste water in the boiler is sucked through negative pressure in the negative pressure pipe, continuous flushing of the inner wall of the boiler is achieved, chemical cleaning can be conducted in cooperation with a scale remover in the storage tank, and the cleaning effect of the scale on the inner wall of the boiler is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a cleaning device for the inner wall of a boiler in a thermal power plant. Background Art

[0002] A boiler is an energy conversion device. The energy input into the boiler includes chemical energy and electrical energy in the fuel. The boiler outputs steam, high-temperature water or organic heat carrier with a certain amount of thermal energy. Therefore, almost all thermal power plants are equipped with boilers. Most of the boilers in thermal power plants work continuously, which results in a lot of scale on the inner wall of the boiler. In order to ensure the heat exchange efficiency of the boiler, the boiler needs to be cleaned.

[0003] In the prior art, when most boilers are cleaned, the scale is generally removed by utilizing the reaction between a descaling agent and scale. When there is a lot of scale inside the boiler, a descaling agent with a higher concentration needs to be used. However, a descaling agent with a higher concentration may cause corrosion to the boiler. Therefore, a cleaning device for the inner wall of the boiler that combines physical cleaning and chemical cleaning is needed. Utility Model Content

[0004] The utility model aims to provide a cleaning device for the inner wall of a boiler in a thermal power plant to solve the problems raised in the above-mentioned background technology.

[0005] The technical solution of the utility model is: a cleaning device for the inner wall of a boiler in a thermal power plant, comprising:

[0006] A box body, wherein a storage box is provided on the inner wall of the bottom of the box body, and the storage box is used to store the descaling agent;

[0007] A flushing assembly, which is arranged on the inner wall of the bottom of the box body and is used to flush boiler dirt;

[0008] A filter assembly, the filter assembly is arranged on the inner wall of the box body, and the filter assembly is used to filter scale;

[0009] A pumping assembly, the pumping assembly is arranged on the inner wall of the box body, and the pumping assembly is used to drive the liquid to flow;

[0010] Wherein, the pumping assembly comprises:

[0011] A tube body, the tube body is arranged on the inner wall of the box body, and a rectangular hole is opened at the bottom of the tube body;

[0012] An L-shaped rod, the L-shaped rod being slidably disposed in the rectangular hole;

[0013] A transmission rod, wherein the transmission rod is arranged in the tube body, and the transmission rod and the end of the L-shaped rod are fixed;

[0014] A piston block, wherein the piston block is fixed to one end of the transmission rod, and the piston block is slidably connected to the inner wall of the tube body;

[0015] A rubber membrane, wherein the rubber membrane is fixed to the other end of the transmission rod, and the rubber membrane is fixedly connected to the inner wall of the tube body;

[0016] A power assembly is arranged at the bottom of the box body, and is used to drive the filter assembly to rotate and drive the L-shaped rod to reciprocate.

[0017] Preferably, it also includes:

[0018] A first one-way valve and a second one-way valve, wherein the first one-way valve and the second one-way valve are both arranged through the side wall of the tube body, and the first one-way valve and the second one-way valve are located on the same side of the piston block;

[0019] A liquid supply pipe, one end of which is connected to the first one-way valve, and the other end of which is connected to the flushing assembly;

[0020] A water pumping pipe is connected to the second one-way valve.

[0021] Preferably, it also includes:

[0022] A third one-way valve and a fourth one-way valve, wherein the third one-way valve and the fourth one-way valve are both disposed through the side wall of the tube body, and the third one-way valve and the fourth one-way valve are located on the same side of the rubber membrane;

[0023] A negative pressure pipe, the negative pressure pipe is connected to the third one-way valve, and the negative pressure pipe passes through the outer wall of the box body;

[0024] A delivery pipe is communicated with the fourth one-way valve, and the delivery pipe is connected with the filter assembly.

[0025] Preferably, the flushing assembly comprises:

[0026] A buffer tank, wherein the buffer tank is arranged on the inner wall of the bottom of the box body, and the liquid supply pipe passes through the inner wall of the top of the buffer tank;

[0027] A piston plate, the piston plate being slidably disposed on the inner wall of the buffer tank;

[0028] A first flow valve, the first flow valve is arranged through the top of the buffer tank;

[0029] an output pipe, the output pipe being in communication with the first flow valve;

[0030] A connecting pipe, which is obliquely arranged in the storage box and passes through the top outer wall of the storage box;

[0031] A second flow valve is provided at the end of the connecting pipe, and the second flow valve is connected to the output pipe.

[0032] Preferably, the power assembly comprises:

[0033] A motor, wherein the motor is fixed on the outer wall of the bottom of the box;

[0034] The crankshaft is rotatably arranged on the inner wall of the bottom of the box body, and the crankshaft and the output shaft of the motor are fixed. A through hole is opened on the top of the L-shaped rod, and the crankshaft passes through the through hole.

[0035] Preferably, the filter assembly comprises:

[0036] A bracket, wherein the bracket is fixed on the inner wall of the box body;

[0037] A filter cartridge, wherein the filter cartridge and the bracket are rotatably connected, and the filter cartridge and the crankshaft are fixed;

[0038] A fixing frame, wherein the fixing frame is fixed on the top of the bracket, and the fixing frame and the conveying pipe are fixed;

[0039] An annular groove, the annular groove is fixed on the inner wall of the filter cartridge, and the bottom of the annular groove is a porous structure;

[0040] A filter screen is arranged on the top of the annular groove.

[0041] The utility model provides a cleaning device for the inner wall of a boiler in a thermal power plant through improvement. Compared with the prior art, it has the following improvements and advantages:

[0042] The utility model uses a power component and a pumping component to achieve the following during use: through the operation of the pumping component, both ends of the pipe body can simultaneously perform pumping and suction operations, thereby achieving the output of clean water in the box body and the negative pressure in the negative pressure pipe. The output clean water is combined with a flushing device to achieve the flushing of scale on the inner wall of the boiler. The negative pressure in the negative pressure pipe is used to suck out waste water in the boiler, thereby achieving continuous flushing of the inner wall of the boiler. In combination with a descaling agent in the storage tank, chemical cleaning can be performed to ensure the cleaning effect of scale on the inner wall of the boiler. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] The utility model is further explained below in conjunction with the accompanying drawings and embodiments:

[0044] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0045] Figure 2 It is a schematic diagram of the box and motor structure of the utility model;

[0046] Figure 3 It is a schematic diagram of the cross-sectional structure of the buffer tank and storage box of the utility model;

[0047] Figure 4It is a schematic diagram of the motor, crankshaft and L-shaped rod structure of the utility model;

[0048] Figure 5 It is a schematic diagram of the cross-sectional structure of the tube body of the utility model;

[0049] Figure 6 This is a schematic diagram of the cross-sectional structure of the filter cartridge of the utility model;

[0050] Figure 7 It is a schematic diagram of the explosion structure of the annular groove and the filter screen of the utility model.

[0051] Description of reference numerals:

[0052] 1. Box body; 2. Storage box; 3. Buffer tank; 4. First flow valve; 5. Output pipe; 6. Second flow valve; 7. Connecting pipe; 8. Filter cartridge; 9. Bracket; 10. Motor; 11. Piston plate; 12. Liquid supply pipe; 13. First one-way valve; 14. Tube body; 15. Second one-way valve; 16. Third one-way valve; 17. Negative pressure pipe; 18. Fourth one-way valve; 19. Delivery pipe; 20. L-shaped rod; 21. Crankshaft; 22. Piston block; 23. Rubber membrane; 24. Fixed frame; 25. Annular groove; 26. Filter screen; 27. Suction pipe; 28. Transmission rod. DETAILED DESCRIPTION

[0053] The utility model is described in detail below, and the technical solutions in the embodiments of the utility model are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0054] The utility model provides a cleaning device for the inner wall of a boiler in a thermal power plant through improvement. The technical solution of the utility model is:

[0055] like Figure 1-Figure 7 As shown, a cleaning device for the inner wall of a boiler in a thermal power plant comprises:

[0056] The box body 1 has a storage box 2 disposed on the inner wall at the bottom thereof, and the storage box 2 is used for storing the descaling agent;

[0057] A flushing component, which is arranged on the inner wall at the bottom of the box body 1 and is used for flushing boiler dirt;

[0058] A filter assembly is arranged on the inner wall of the box body 1 and is used to filter scale;

[0059] A pumping assembly, which is arranged on the inner wall of the box body 1 and is used to drive the liquid to flow;

[0060] Among them, the pumping components include:

[0061] The tube body 14 is arranged on the inner wall of the box body 1, and a rectangular hole is opened at the bottom of the tube body 14;

[0062] An L-shaped rod 20, the L-shaped rod 20 is slidably disposed in the rectangular hole;

[0063] A transmission rod 28, the transmission rod 28 is disposed in the tube body 14, and the transmission rod 28 and the end of the L-shaped rod 20 are fixed;

[0064] A piston block 22, the piston block 22 is fixed to one end of the transmission rod 28, and the piston block 22 is slidably connected to the inner wall of the tube body 14;

[0065] The rubber membrane 23 is fixed to the other end of the transmission rod 28, and the rubber membrane 23 is fixedly connected to the inner wall of the tube body 14;

[0066] A power assembly is arranged at the bottom of the housing 1 and is used to drive the filter assembly to rotate and drive the L-shaped rod 20 to reciprocate.

[0067] Furthermore, it also includes:

[0068] A first one-way valve 13 and a second one-way valve 15, both of which are disposed through the side wall of the tube body 14, and the first one-way valve 13 and the second one-way valve 15 are located on the same side of the piston block 22;

[0069] A liquid supply pipe 12, one end of the liquid supply pipe 12 is connected to the first one-way valve 13, and the other end of the liquid supply pipe 12 is connected to the flushing component;

[0070] The water pumping pipe 27 is connected to the second one-way valve 15 .

[0071] Furthermore, it also includes:

[0072] The third one-way valve 16 and the fourth one-way valve 18 are both disposed through the side wall of the tube body 14, and the third one-way valve 16 and the fourth one-way valve 18 are located on the same side of the rubber membrane 23;

[0073] A negative pressure pipe 17, the negative pressure pipe 17 is connected to the third one-way valve 16, and the negative pressure pipe 17 passes through the outer wall of the box body 1;

[0074] The delivery pipe 19 is communicated with the fourth one-way valve 18, and the delivery pipe 19 is connected with the filter assembly.

[0075] When the power component is working, it drives the pumping component to work, and cooperates with the first one-way valve 13 and the second one-way valve 15, the third one-way valve 16 and the fourth one-way valve 18, as well as the liquid supply pipe 12 and the water suction pipe 27, the negative pressure pipe 17 and the delivery pipe 19, so that the water in the box 1 is pumped out and output to flush the scale inside the boiler. The water inside the boiler is transported to the filter component through the negative pressure pipe 17 and the delivery pipe 19 to separate the scale and water.

[0076] Further, the flushing component includes:

[0077] The buffer tank 3 is arranged on the inner wall at the bottom of the box body 1, and the liquid supply pipe 12 passes through the inner wall at the top of the buffer tank 3;

[0078] A piston plate 11, the piston plate 11 is slidably disposed on the inner wall of the buffer tank 3;

[0079] A first flow valve 4, which is arranged through the top of the buffer tank 3;

[0080] An output pipe 5, the output pipe 5 is connected to the first flow valve 4;

[0081] A connecting pipe 7, which is obliquely arranged in the storage box 2 and passes through the top outer wall of the storage box 2;

[0082] The second flow valve 6 is arranged at the end of the connecting pipe 7 , and the second flow valve 6 is connected to the output pipe 5 .

[0083] After the clean water enters the buffer tank 3, it falls above the piston plate 11. As the amount of water in the buffer tank 3 increases, the air below the piston plate 11 in the buffer tank 3 is compressed by the piston plate 11, so that the water pressure in the buffer tank 3 increases. Under the action of the first flow valve 4, the water pressure and flow rate output through the output pipe 5 are kept constant. The water output through the output pipe 5 enters the flushing equipment, and the flushing equipment and water flow are used to flush the scale on the inner wall of the boiler, and the scale with low adhesion is flushed down.

[0084] Furthermore, the power assembly includes:

[0085] The motor 10 is fixed on the outer wall of the bottom of the box body 1;

[0086] The crankshaft 21 is rotatably arranged on the inner wall of the bottom of the housing 1 , and the crankshaft 21 and the output shaft of the motor 10 are fixed. A through hole is opened at the top of the L-shaped rod 20 , and the crankshaft 21 passes through the through hole.

[0087] During the operation of the motor 10, the crankshaft 21 and the through hole on the L-shaped rod 20 drive the L-shaped rod 20 to reciprocate, thereby causing the transmission rod 28 to reciprocate in the tube body 14. During the reciprocating movement of the transmission rod 28, the piston block 22 is driven to reciprocate, and the rubber film 23 is driven to deform periodically.

[0088] When the crankshaft 21 rotates, the filter cartridge 8 is driven to rotate at the same time.

[0089] Furthermore, the filtering component includes:

[0090] Bracket 9, bracket 9 is fixed on the inner wall of box body 1;

[0091] The filter cartridge 8 is rotatably connected to the support 9, and the filter cartridge 8 is fixed to the crankshaft 21;

[0092] A fixing frame 24, the fixing frame 24 is fixed on the top of the bracket 9, and the fixing frame 24 and the conveying pipe 19 are fixed;

[0093] The annular groove 25 is fixed on the inner wall of the filter cartridge 8, and the bottom of the annular groove 25 is a porous structure;

[0094] The filter screen 26 is arranged on the top of the annular groove 25 .

[0095] When the filter cartridge 8 rotates, the filter screen 26 is driven to rotate. Under the action of centrifugal force, the scale on the upper surface of the filter screen 26 is thrown onto the side wall of the filter cartridge 8 and then falls into the annular groove 25, thereby separating the scale.

[0096] Specifically, the working principle is: connect the pipeline of the flushing equipment with the output pipe 5, connect the water pumping pipeline with the negative pressure pipe 17, and place the water pumping pipeline in the boiler;

[0097] When in use, firstly, pour clean water into the box 1, and then turn on the switch of the motor 10;

[0098] During the operation of the motor 10, the crankshaft 21 and the through hole on the L-shaped rod 20 drive the L-shaped rod 20 to reciprocate, thereby causing the transmission rod 28 to reciprocate in the tube body 14. During the reciprocating movement of the transmission rod 28, the piston block 22 is driven to reciprocate, and the rubber film 23 is driven to deform periodically.

[0099] During the reciprocating movement of the piston block 22, the clean water in the box body 1 is sucked into the space on one side of the piston block 22 through the water pumping pipe 27 and the second one-way valve 15, and then the water in the space is injected into the buffer tank 3 through the first one-way valve 13 and the liquid supply pipe 12. After the clean water enters the buffer tank 3, it falls above the piston plate 11. As the amount of water in the buffer tank 3 increases, the air below the piston plate 11 in the buffer tank 3 is compressed by the piston plate 11, so that the water pressure in the buffer tank 3 is increased. Under the action of the first flow valve 4, the water pressure and flow rate output through the output pipe 5 are constant;

[0100] Similarly, when the rubber membrane 23 is deformed, the space on one side of the rubber membrane 23 in the tube body 14 increases and decreases periodically, and then the water and scale in the water extraction pipeline are sucked into the space on one side of the rubber membrane 23 in the tube body 14 through the negative pressure tube 17 and the third one-way valve 16, and then the scale and water are input into the filter cartridge 8 through the fourth one-way valve 18 and the delivery pipe 19;

[0101] The water outputted through the output pipe 5 enters the flushing device, and the scale on the inner wall of the boiler is flushed by the flushing device and the water flow, and the scale with low adhesion is flushed down, and the water and scale in the boiler are promptly pumped out through the pumping pipe;

[0102] After the flushing work is carried out for a period of time, the descaling agent is injected into the storage tank 2, and the switch of the second flow valve 6 is turned on. When the water flows through the output pipe 5, the liquid flow rate in the output pipe 5 is large, and the pressure is small. Under the action of the pressure difference, the descaling agent in the storage tank 2 enters the output pipe 5 through the connecting pipe 7 and the second flow valve 6, and is mixed with the water in the output pipe 5 and then output through the flushing equipment, so that the scale with strong adhesion on the inner wall of the boiler contacts the descaling agent, and the scale cleaning work is realized by utilizing the chemical reaction between the descaling agent and the scale.

[0103] While the scale is being cleaned by the descaling agent, some of the scale is washed down and adsorbed by the pumping pipe, and finally enters the filter cartridge 8;

[0104] The scale and water output by the delivery pipe 19 directly fall on the surface of the filter 26, thereby separating the scale and water. During the rotation of the crankshaft 21, the filter cartridge 8 is also driven to rotate. Therefore, the scale on the upper surface of the filter 26 is thrown onto the side wall of the filter cartridge 8 under the action of centrifugal force, and then falls into the annular groove 25, thereby separating the scale. This can avoid unnecessary reaction between the descaling agent and the scale, thereby reducing the amount of descaling agent used during the cleaning process.

Claims

1. A cleaning device for the inner wall of a boiler in a thermal power plant, characterized in that: include: A box body (1), wherein a storage box (2) is provided on the inner wall of the bottom of the box body (1), and the storage box (2) is used to store a descaling agent; A flushing assembly, the flushing assembly being arranged on the inner wall of the bottom of the box body (1), and the flushing assembly being used for flushing boiler dirt; A filter assembly, the filter assembly being arranged on the inner wall of the box body (1), and being used for filtering scale; A pumping assembly, the pumping assembly being arranged on the inner wall of the box body (1), and the pumping assembly being used to drive the liquid to flow; Wherein, the pumping assembly comprises: A tube body (14), the tube body (14) being arranged on the inner wall of the box body (1), and a rectangular hole being formed at the bottom of the tube body (14); An L-shaped rod (20), wherein the L-shaped rod (20) is slidably disposed in the rectangular hole; A transmission rod (28), wherein the transmission rod (28) is disposed in the tube body (14), and the ends of the transmission rod (28) and the L-shaped rod (20) are fixed; A piston block (22), wherein the piston block (22) is fixed to one end of the transmission rod (28), and the piston block (22) is slidably connected to the inner wall of the tube body (14); A rubber membrane (23), wherein the rubber membrane (23) is fixed to the other end of the transmission rod (28), and the rubber membrane (23) is fixedly connected to the inner wall of the tube body (14); A power assembly is arranged at the bottom of the box body (1), and is used to drive the filter assembly to rotate and drive the L-shaped rod (20) to reciprocate.

2. A cleaning device for the inner wall of a thermal power plant boiler according to claim 1, characterized in that: Also includes: A first one-way valve (13) and a second one-way valve (15), wherein the first one-way valve (13) and the second one-way valve (15) are both arranged through the side wall of the tube body (14), and the first one-way valve (13) and the second one-way valve (15) are located on the same side of the piston block (22); A liquid supply pipe (12), one end of the liquid supply pipe (12) being connected to the first one-way valve (13), and the other end of the liquid supply pipe (12) being connected to the flushing assembly; A water pumping pipe (27), wherein the water pumping pipe (27) is in communication with the second one-way valve (15).

3. The cleaning device for the inner wall of a thermal power plant boiler according to claim 1, characterized in that: Also includes: A third one-way valve (16) and a fourth one-way valve (18), wherein the third one-way valve (16) and the fourth one-way valve (18) are both arranged through the side wall of the tube body (14), and the third one-way valve (16) and the fourth one-way valve (18) are located on the same side of the rubber membrane (23); A negative pressure pipe (17), wherein the negative pressure pipe (17) is connected to the third one-way valve (16), and the negative pressure pipe (17) passes through the outer wall of the box body (1); A delivery pipe (19), the delivery pipe (19) is communicated with the fourth one-way valve (18), and the delivery pipe (19) is connected to the filter assembly.

4. The cleaning device for the inner wall of a thermal power plant boiler according to claim 2, characterized in that: The flushing assembly comprises: A buffer tank (3), wherein the buffer tank (3) is arranged on the inner wall of the bottom of the box body (1), and the liquid supply pipe (12) passes through the inner wall of the top of the buffer tank (3); A piston plate (11), wherein the piston plate (11) is slidably disposed on the inner wall of the buffer tank (3); A first flow valve (4), the first flow valve (4) being arranged through the top of the buffer tank (3); an output pipe (5), the output pipe (5) being in communication with the first flow valve (4); A connecting pipe (7), wherein the connecting pipe (7) is obliquely arranged in the storage box (2), and the connecting pipe (7) passes through the top outer wall of the storage box (2); A second flow valve (6), wherein the second flow valve (6) is arranged at the end of the connecting pipe (7), and the second flow valve (6) is connected to the output pipe (5).

5. The cleaning device for the inner wall of a thermal power plant boiler according to claim 1, characterized in that: The power assembly comprises: A motor (10), wherein the motor (10) is fixed on the outer wall of the bottom of the box body (1); A crankshaft (21) is rotatably arranged on the inner wall of the bottom of the housing (1), and the crankshaft (21) and the output shaft of the motor (10) are fixed; a through hole is opened on the top of the L-shaped rod (20), and the crankshaft (21) passes through the through hole.

6. The cleaning device for the inner wall of a thermal power plant boiler according to claim 5, characterized in that: The filter assembly comprises: A bracket (9), wherein the bracket (9) is fixed on the inner wall of the box body (1); A filter cartridge (8), wherein the filter cartridge (8) and the bracket (9) are rotatably connected, and the filter cartridge (8) and the crankshaft (21) are fixed; A fixing frame (24), wherein the fixing frame (24) is fixed on the top of the bracket (9), and the fixing frame (24) and the conveying pipe (19) are fixed; An annular groove (25), the annular groove (25) is fixed on the inner wall of the filter cartridge (8), and the bottom of the annular groove (25) is a porous structure; A filter screen (26) is arranged on the top of the annular groove (25).

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