A water seal ring cooler up and down water tank protection system and method
Patent Information
- Application Number
- CN202611262182.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-08-19
- Publication Date
- 2026-11-03
AI Technical Summary
Existing water-sealed ring coolers have problems in cold regions, including low water resource utilization, high fresh water consumption due to lack of sealing water circulation, serious dust emission, equipment freezing, poor sealing effect, and failure to meet environmental emission standards.
The system employs a dual-sealing component design with upper and lower water tanks, combined with electric and manual drain valves, to construct a sealed water circulation system. Water is supplied through the main inlet pipe and drained through the drain pipe, forming a stable water seal barrier. After purification treatment in the sedimentation and drainage unit, the clean water is recycled, enabling automated control and manual drainage.
It improves the sealing performance of the water tank, saves water resources, reduces production and operating costs, reduces pollutant emissions, extends equipment life, and meets environmental protection requirements.
Smart Images
Figure CN123028457A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of cooling equipment technology, specifically to a water seal ring cooler upper and lower water tank protection system and method. Background Technology
[0002] Water-sealed ring coolers are used in the steel industry in cold regions when producing pellets and sinter. Traditional ring coolers use spring seals at the bottom and open structures for the upper fume hood, resulting in severe dust emission during the cooling process, making it difficult to meet ultra-low emission requirements.
[0003] To address these issues, the annular cooler employs two sealing methods: the first is an "upper water seal + lower mechanical seal and water seal," and the second is an "upper water seal + lower mechanical seal." The first method offers superior sealing performance and is being gradually adopted in upgrades and modifications. However, the first sealing method reveals significant problems when used in cold regions: because the sintering production line operates in series, a failure in the main equipment necessitates a prolonged shutdown of the annular cooler, leading to rapid heat loss and the potential for ice formation and dust accumulation inside the water tank. When the equipment restarts, the increased resistance between the frozen material and the sealed water tank easily triggers overload alarms or even protective shutdowns, severely hindering production recovery efficiency.
[0004] Meanwhile, existing water-sealed ring coolers have significant shortcomings in water resource utilization and wastewater treatment. On the one hand, the sealing water in the upper and lower water tanks is in an open state for a long time. During operation, a large amount of dust and impurities mix into the sealing water, causing the water quality to deteriorate rapidly. To maintain the sealing effect, fresh water needs to be continuously replenished. However, traditional systems lack a sealing water recycling mechanism, and the sealing water is directly discharged after one use, resulting in extremely high water consumption, which does not meet the requirements of green development for water conservation and energy saving. On the other hand, with the accumulation of operating time, dust and impurities mixed in the sealing water accumulate and form scale at the bottom of the water tank and on the inner wall of the pipes. This not only reduces the effective volume of the water tank and reduces the sealing effect, but also easily causes blockage of the sewage discharge pipes. Existing sewage discharge methods mostly rely on manual cleaning at regular intervals, and the problems of untimely and incomplete sewage discharge are common, leading to sewage sludge accumulation and an increased risk of pollutant overflow, which seriously affects the on-site working environment and makes it difficult to meet increasingly stringent environmental emission standards. In addition, the water supply, replenishment, sewage discharge, and level adjustment of the upper and lower water tanks all rely on manual inspection and operation, which is cumbersome and slow to respond. It is impossible to adjust the water tank level and sewage discharge rhythm in a timely manner according to the equipment operating status, which further exacerbates the problems of water waste and sewage discharge difficulties. Summary of the Invention
[0005] The purpose of this invention is to provide a water seal ring cooler upper and lower water tank protection system and method to solve the problems of low water resource utilization and high fresh water consumption caused by the lack of sealing water circulation in existing water seal ring coolers used in cold regions.
[0006] To achieve the above objectives, the basic solution provided by this invention is as follows: a water-sealed ring cooler upper and lower water tank protection system and method, including a trolley, a rotating disc, a main water inlet pipe, a sedimentation and sludge discharge unit, and a clean water circulation unit. The rotating disc is located under the trolley, and a water-sealing unit is provided on the trolley. The water-sealing unit includes an upper sealing component and a lower sealing component. The upper sealing component is located on both sides of the inner and outer rings at the top of the trolley, and the lower sealing component is located on both sides of the inner and outer rings at the bottom of the rotating disc. A sludge discharge pipe is connected below the lower sealing component. An electric sludge discharge valve and a manual sludge discharge valve are provided on the sludge discharge pipe. A sludge collection trough is placed below the sludge discharge pipe and leads to the sedimentation and sludge discharge unit. The sedimentation and sludge discharge unit is connected to the clean water circulation unit, and the clean water circulation unit is connected to the main water inlet pipe. Both the upper and lower sealing components are connected to the main water inlet pipe. A drain pipe is connected to the bottom of the upper sealing component and is connected to the lower sealing component. A drain valve is provided on the drain pipe.
[0007] The working principle of this invention is as follows: A water-sealing unit provides sealing protection for the upper and lower water tanks of the annular cooler. The main inlet pipe continuously supplies water to the upper and lower sealing components, forming a stable water-sealing barrier to prevent external impurities from entering the water tanks. The upper sealing component is located on both sides of the inner and outer rings at the top of the trolley. Its bottom drain pipe guides the used sealing water into the lower sealing component, achieving initial recycling of the sealing water. The lower sealing component is located on both sides of the inner and outer rings at the bottom of the rotating disc. Wastewater and impurities generated during operation are discharged through the drain pipe below it. The electric and manual drain valves on the drain pipe can flexibly control the discharge rhythm. After being collected in the sludge collection tank, the wastewater is sent to the sedimentation and sludge discharge unit for purification. The purified water enters the clean water circulation unit and finally flows back into the main inlet pipe, forming a complete sealing water circulation system to ensure continuous and effective sealing protection.
[0008] The beneficial effects of this invention are as follows: By employing a dual-sealing system with upper and lower sealing components, key parts of the trolley and rotating disc are sealed separately, significantly improving the sealing performance of the upper and lower water tanks of the annular cooler. This effectively prevents dust and debris from entering the water tanks, avoiding blockages and equipment wear, and extending the service life of the annular cooler. A sealed water recycling system is constructed; after the sedimentation and sludge discharge unit purifies the wastewater, the clean water can be reused for sealing operations, saving water resources and reducing production and operating costs. The sludge discharge pipe uses both electric and manual sludge discharge valves for dual control, achieving automated and convenient operation while ensuring smooth discharge through manual control in special circumstances. Furthermore, the cooperation between the sludge collection tank and the sedimentation and sludge discharge unit efficiently treats wastewater impurities, reducing pollutant emissions and meeting environmental protection requirements. In addition, the coordinated operation of all components, the rational structural design, and stable and reliable operation reduce equipment maintenance workload and costs.
[0009] Option 2, a preferred embodiment of the basic option, also includes a top plate and a bottom plate. The upper sealing assembly consists of an upper water tank and an upper partition plate, while the lower sealing assembly consists of a lower water tank, a lower partition plate, and a U-shaped groove. The upper water tank is connected to the trolley, and the upper partition plate is connected to the top plate of the annular cooler. The upper partition plate is located in the middle of the upper water tank and extends along the length of the upper water tank. A drain pipe is connected to the lower end of the upper water tank. The lower water tank is connected to the bottom plate, and the lower partition plate is connected to the rotating disc. The lower partition plate is located in the middle of the lower water tank and extends along the length of the lower water tank. The other end of the drain pipe is connected to the upper end of the lower water tank, and a drain valve is provided on the drain pipe. Several U-shaped grooves are evenly arranged around the center of the lower water tank. Both the upper water tank and the U-shaped grooves are connected to water inlet branch pipes, and the main water inlet pipe is connected to the water inlet branch pipes. Each water inlet branch pipe is equipped with a water inlet valve.
[0010] Option 3, which is the preferred option of Option 2, includes a sedimentation and sludge discharge unit, which is connected to a sedimentation tank and a sludge tank by a sludge pipe. A sludge pump is installed on the sludge pipe, and a stirring blade is installed at one end of the sludge pipe inside the sedimentation tank. A sludge collection trough extends above the sedimentation tank and is connected to a sludge collection pipe at one end of the sedimentation tank.
[0011] Option 4, which is the preferred option of Option 3, includes a clear water circulation unit comprising a clear water tank and a drainage well. The clear water tank and sedimentation tank are placed side by side. The height of the partition wall on the side where the clear water tank and sedimentation tank are in contact is lower than the height of the three partition walls that are not in contact. The clear water tank is equipped with outlet pipe 1 and outlet pipe 2. Outlet pipe 1 is connected to the main inlet pipe, and outlet pipe 2 is connected to the drainage well. Both outlet pipe 1 and outlet pipe 2 are equipped with water pumps, and both outlet pipe 1 and outlet pipe 2 are equipped with outlet valve 1.
[0012] Option 5, which is a preferred option of Option 4, also includes a high-temperature steam pipe. Both the sedimentation tank and the clear water tank are equipped with steam branch pipes, and both steam branch pipes are connected to the high-temperature steam pipe. The high-temperature steam pipe is equipped with a steam inlet valve.
[0013] Option 6, which is the preferred option of Option 5, is provided with a third outlet pipe in the sedimentation tank, which is connected to the second outlet pipe, and a second outlet valve is provided on the third outlet pipe.
[0014] Option 7, which is the preferred option of Option 6, is equipped with level gauges on both the upper water tank and the U-shaped tank. The inlet valve, drain valve 1, outlet valve 1, steam inlet valve, and outlet valve 2 are all solenoid valves. The level gauges, inlet valve, drain valve 1, outlet valve 1, steam inlet valve, outlet valve 2, and electric drain valve are all interlocked with the PLC controller.
[0015] Option 8, a method for protecting the upper and lower water tanks of a water-sealed ring cooler, includes the following steps: S1: Introduce initial sealing water into both the upper and lower water tanks. Add 11m of water to the upper water tank. 3 Add 58m of water to the drain tank. 3 water; S2: During equipment operation, the wastewater containing dust and impurities in the upper water tank flows into the lower water tank through the drain pipe and mixes with the water containing sludge in the lower water tank. S3: The mixed wastewater is sent to the collection tank through the sewage pipe, and then discharged into the sedimentation tank along the collection tank. The upper layer of water in the sedimentation tank flows into the clear water tank along the partition wall, and the lower layer of sludge is discharged into the sludge box through the sludge pipe. At the same time, steam at 280-350℃ is introduced into the sedimentation tank and the clear water tank. S4: The water entering the clear water tank is sent back to the upper and lower water tanks through the outlet pipe to form a circulating water supply system; S5: During steps S2 to S4, the level gauge monitors the liquid level in the upper and lower water tanks in real time. If the liquid level is lower than the level set in step S1, the PLC controller transmits a signal of liquid level drop to the central control, and the central control sends a signal to the inlet valve to open the valve until the liquid level returns to the set value. S6: After a single operation is completed, close the outlet valve 1 and the water supply pump on outlet pipe 1, and open the outlet valve 1 and the water supply pump on outlet pipe 2 to discharge the wastewater in the water tank into the drainage well. If it is necessary to empty the sedimentation tank, open outlet valve 2 at the same time. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of the water seal ring cooler upper and lower water tank protection system and method of the present invention; Figure 2 This is a schematic diagram of the structure of the trolley, rotating disc, and water sealing unit in the water-sealed ring cooler upper and lower water tank protection system and method of the present invention. Detailed Implementation
[0017] The present invention will be further described in detail below through specific embodiments: The reference numerals in the accompanying drawings include: 1. Trolley, 2. Rotary disc, 3. Main inlet pipe, 4. Upper sealing assembly, 401. Upper water tank, 402. Upper partition, 5. Lower sealing assembly, 501. Lower water tank, 502. Lower partition, 503. U-shaped channel, 6. Sewage pipe, 7. Electric sewage valve, 8. Manual sewage valve, 9. Sewage collection trough, 10. Drain valve two, 11. Drain pipe, 12. Top plate, 13. Bottom plate, 14. Drain valve one 15. Inlet branch pipe, 16. Inlet valve, 17. Sedimentation tank, 18. Sludge tank, 19. Sludge pipe, 20. Sludge pump, 21. Agitator, 22. Sewage collection pipe, 23. Clear water tank, 24. Drainage well, 25. Outlet pipe one, 26. Outlet pipe two, 27. Water supply pump, 28. Outlet valve one, 29. High-temperature steam pipe, 30. Steam branch pipe, 31. Steam inlet valve, 32. Outlet pipe three, 33. Outlet valve two, 34. Level gauge.
[0018] Example 1 like Figure 1 and Figure 2As shown: A water-sealed ring cooler upper and lower water tank protection system includes a trolley 1, a rotating disc 2, a main inlet pipe 3, a sedimentation and sludge discharge unit, and a clean water circulation unit. The rotating disc 2 is located under the trolley 1. The trolley 1 is equipped with a water-sealing unit, which includes an upper sealing component 4 and a lower sealing component 5. The upper sealing component 4 is located on both sides of the inner and outer rings at the top of the trolley 1, and the lower sealing component 5 is located on both sides of the inner and outer rings at the bottom of the rotating disc 2. A sludge discharge pipe 6 is connected below the lower sealing component 5. The sludge discharge pipe 6 is equipped with an electric sludge discharge valve 7 and a manual sludge discharge valve 8. A sludge collection trough 9 is placed below the sludge discharge pipe 6, leading to the sedimentation and sludge discharge unit. The sedimentation and sludge discharge unit is connected to the clean water circulation unit, which is connected to the main inlet pipe 3. The upper sealing component 4 and the lower sealing component 5... All components are connected to the main water inlet pipe 3. The bottom of the upper sealing assembly 4 is connected to a drain pipe 11, which is connected to the lower sealing assembly 5. A drain valve 10 is provided on the drain pipe 11. The assembly also includes a top plate 12 and a bottom plate 13. The upper sealing assembly 4 consists of an upper water trough 401 and an upper partition plate 402. The lower sealing assembly 5 consists of a lower water trough 501, a lower partition plate 502, and a U-shaped groove 503. The upper water trough 401 is connected to the trolley 1. The upper partition plate 402 is connected to the top plate 12. The upper partition plate 402 is located in the middle of the upper water trough 401 and extends along the length of the upper water trough 401. The drain pipe 11 is connected to the lower end of the upper water trough 401. The lower water trough 501 is connected to the bottom plate 13. The lower partition plate 502 is connected to the rotary disc 2. The lower partition plate 502 is located in the lower water trough 501. The drain pipe 11 is located in the middle of the interior and extends along the length of the drain trough 501. The other end of the drain pipe 11 is connected to the upper end of the drain trough 501. A drain valve 14 is provided on the drain pipe 11. Several U-shaped channels 503 are evenly arranged at an angle of 30-45°. Both the upper channel 401 and the U-shaped channel 503 are connected to water inlet branch pipes 15. The main water inlet pipe 3 is connected to the water inlet branch pipes 15. Each water inlet branch pipe 15 is provided with a water inlet valve 16. The sedimentation and sewage discharge unit includes a sedimentation tank 17 and a sludge tank 18. A sludge pipe 19 connects the sedimentation tank 17 and the sludge tank 18. A sludge pump 20 is provided on the sludge pipe 19. A stirring element 21 is provided at one end of the sludge pipe 19 inside the sedimentation tank 17. The sewage collection trough 9 extends above the sedimentation tank 17. The sewage collection trough 9 is located in the sedimentation tank 17. One end is connected to a sewage pipe 22. The clear water circulation unit includes a clear water tank 23 and a drainage well 24. The clear water tank 23 and the sedimentation tank 17 are placed side by side. The height of the partition wall on the side of the clear water tank 23 that contacts the sedimentation tank 17 is lower than the height of the three partition walls that do not contact each other. The clear water tank 23 is equipped with a first outlet pipe 25 and a second outlet pipe 26. The first outlet pipe 25 is connected to the main inlet pipe 3, and the second outlet pipe 26 is connected to the drainage well 24. Both the first outlet pipe 25 and the second outlet pipe 26 are equipped with water pumps 27 and outlet valves 28. The unit also includes a high-temperature steam pipe 29. Both the sedimentation tank 17 and the clear water tank 23 are equipped with steam branch pipes 30. Both steam branch pipes 30 are connected to the high-temperature steam pipe 29. The high-temperature steam pipe 29 is equipped with a steam inlet valve 31.Sedimentation tank 17 is equipped with outlet pipe 32, which connects to outlet pipe 26. Outlet valve 23 is installed on outlet pipe 32. Level gauges 34 are installed on both the upper water tank 401 and the U-shaped tank 503. Inlet valve 16, drain valve 14, outlet valve 28, steam inlet valve 31, and outlet valve 23 are all solenoid valves. Level gauges 34, inlet valve 16, drain valve 14, outlet valve 28, steam inlet valve 31, outlet valve 23, and electric drain valve 7 are all interlocked with the PLC controller.
[0019] The implementation method of this embodiment is as follows: Before starting the annular cooler, the operator initiates the automatic water injection program via the PLC control panel. The PLC controller reads the signals from the level gauges 34 on the upper water tank 401 and the U-shaped tank 503. If the liquid level is lower than the set lower limit, the system determines that water injection is required. Then, the PLC automatically turns on the water pump 27 on the outlet pipe 25 of the clear water tank 23 and the corresponding outlet valve 28. Clear water is distributed to each inlet branch pipe 15 through the main inlet pipe 3. At this time, the inlet valve 16 automatically opens, and water is injected into the upper water tank 401 and the U-shaped tank 503. After the water is injected into the upper water tank 401, the water level rises due to the presence of the upper baffle 402, forming a "U"-shaped water seal. At the same time, water enters the lower water tank 501 through the drain pipe 11, forming a complete water seal unit with the lower baffle 502. When the level gauge 34 detects that the water level has reached the set upper limit, the PLC closes the inlet valve 16 and the water pump 27, and the system enters standby mode.
[0020] When the annular cooler starts operating, the trolley 1 and the rotary disc 2 move relative to each other, and the system automatically enters dynamic adjustment mode. During equipment operation, water level fluctuations occur due to evaporation and leakage. The PLC continuously monitors the liquid level in each tank. When the liquid level drops to the lower limit, the PLC automatically opens the corresponding inlet valve 16 to replenish a small amount of water, ensuring that the water seal is always in an effective state and preventing cold air from mixing inside and outside the annular cooler. Excess water in the upper water tank 401 is discharged into the lower water tank 501 through the drain pipe 11 at the bottom, realizing internal water recycling. During maintenance or when dredging is required, the operator can open the drain valve 14 through the PLC to force the water in the upper water tank 401 into the lower water tank 501 or the sewage system.
[0021] As operating time increases, impurities in the water increase. These impurities can be drained through the conical funnels at the bottom of the drain trough 501 and U-shaped trough 503. The conical funnels are equipped with viewing windows, allowing for discharge based on a set time period or observed accumulation. During discharge, the PLC automatically opens the electric drain valve 7 below the lower sealing assembly 5. Sludge-containing wastewater is discharged through the drain pipe 6 into the collection trough 9, and then flows into the sedimentation tank 17 through the collection pipe 22. The wastewater remains in the sedimentation tank 17. Due to the low partition wall between the clear water tank 23 and the sedimentation tank 17, the upper clear liquid naturally overflows into the clear water tank 23, achieving preliminary solid-liquid separation. When the sludge accumulates to a certain level at the bottom of the sedimentation tank, the sludge pump 20 is started, and the sludge is pumped to the sludge tank 18 through the sludge pipe 19. The agitator 21 at the front end of the sludge pipe 19 rotates during pumping to prevent sludge from caking and clogging the pipe. The clarified circulating water collected in the clear water tank 23 is pumped back to the main water inlet pipe 3 via the water supply pump 27 and the outlet pipe 25 when the system needs to be replenished. If the water level in the clear water tank is too high, the excess water is discharged into the drainage well 24 for backup or external discharge via the outlet pipe 26.
[0022] In low-temperature environments or during prolonged shutdowns, when the ambient temperature sensor detects a low temperature, the PLC opens the steam inlet valve 31. High-temperature steam enters the steam branch pipes 30 in the sedimentation tank 17 and the clear water tank 23 through the high-temperature steam pipe 29 to heat the water and prevent freezing. If the shutdown is prolonged, the PLC executes the "drainage program," automatically opening all inlet valves 16 and drain valve 14 to drain the water in the upper water tank 401 and lower water tank 501 into the sludge collection tank 9, preventing water accumulation in the water seal tank from freezing and cracking the equipment.
[0023] When the PLC or solenoid valve fails, the operator can manually operate the manual drain valve 8 on-site for emergency drainage. If the clean water circulation unit fails, the water in the sedimentation tank 17 can be sent directly to the drainage well 24 through the drain pipe 26 by opening the drain valve 33 on the drain pipe 32, so as to maintain the emergency drainage capacity of the system and prevent water seal water from overflowing and polluting the environment.
[0024] Example 2 like Figure 1 and Figure 2 As shown: A method for protecting the upper and lower water tanks of a water-sealed ring cooler, characterized by comprising the following steps: S1: Initial sealing water is introduced into the upper and lower water tanks. 11m³ of water is added to the upper water tank 401. 3 Add 58m of water to the drain tank 501. 3 water; S2: During equipment operation, the wastewater containing dust and impurities in the upper water tank 401 flows into the lower water tank 501 at a rate of 4-8 m3 / h, and mixes with the water containing sludge in the lower water tank 501. S3: The mixed wastewater is sent to the collection tank 9 through the sewage pipe 6, and then discharged into the sedimentation tank 17 along the collection tank 9. The upper layer of water in the sedimentation tank 17 flows into the clear water tank 23 along the partition wall, and the lower layer of sludge is discharged into the sludge box 18 through the sludge pipe 19. At the same time, steam at 280-350℃ is introduced into the sedimentation tank 17 and the clear water tank 23. S4: The water entering the clear water tank 23 is sent back to the upper and lower water tanks through the outlet pipe 25 to form a circulating water supply system; S5: During steps S2 to S4, the level gauge 34 monitors the liquid level of the upper and lower water tanks in real time. If the liquid level is lower than the level set in step S1, the PLC controller transmits a signal of liquid level drop to the central control, and the central control sends a signal to the inlet valve 16 to open the valve until the liquid level returns to the set value. S6: After a single operation is completed, close the outlet valve 28 and water pump 27 on outlet pipe 1 25, and open the outlet valve 28 and water pump 27 on outlet pipe 2 26. If it is necessary to empty the sedimentation tank 17, open outlet valve 2 33 at the same time to empty the wastewater in the equipment and discharge the wastewater into the drainage well 24.
[0025] The above descriptions are merely embodiments of the present invention, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.
Claims
1. A water-sealed ring cooler upper and lower water tank protection system, characterized in that, The system includes a trolley (1), a rotating disc (2), a main inlet pipe (3), a sedimentation and sewage discharge unit, and a clean water circulation unit. The rotating disc (2) is located under the trolley (1). A water sealing unit is provided on the trolley (1). The water sealing unit includes an upper sealing component (4) and a lower sealing component (5). The upper sealing component (4) is located on both sides of the inner and outer rings at the top of the trolley (1). The lower sealing component (5) is located on both sides of the inner and outer rings at the bottom of the rotating disc (2). A sewage discharge pipe (6) is connected below the lower sealing component (5). An electric discharge pipe (6) is provided on the sewage discharge pipe (6). The system includes a dynamic drain valve (7) and a manual drain valve (8). A sludge collection trough (9) is placed below the drain pipe (6). The sludge collection trough (9) leads to the sedimentation and sludge discharge unit. The sedimentation and sludge discharge unit is connected to the clean water circulation unit. The clean water circulation unit is connected to the main water inlet pipe (3). The upper sealing assembly (4) and the lower sealing assembly (5) are both connected to the main water inlet pipe (3). The bottom of the upper sealing assembly (4) is connected to a drain pipe (11). The drain pipe (11) is connected to the lower sealing assembly (5). A second drain valve (10) is provided on the drain pipe (11).
2. The water seal ring cooler upper and lower water tank protection system according to claim 1, characterized in that, It also includes a top plate (12) and a bottom plate (13). The upper sealing assembly (4) consists of an upper water tank (401) and an upper partition plate (402). The lower sealing assembly (5) consists of a lower water tank (501), a lower partition plate (502), and a U-shaped groove (503). The upper water tank (401) is connected to the trolley (1). The upper partition plate (402) is connected to the top plate (12). The upper partition plate (402) is located in the middle of the upper water tank (401) and extends along the length of the upper water tank (401). The drain pipe (11) is connected to the lower end of the upper water tank (401). The lower water tank (501) is connected to the bottom plate (13). The lower partition (502) is connected to the rotating disc (2). The lower partition (502) is located in the middle of the lower water tank (501) and extends along the length of the lower water tank (501). The other end of the drain pipe (11) is connected to the upper end of the lower water tank (501). A drain valve (14) is provided on the drain pipe (11). Several U-shaped grooves (503) are evenly arranged at an angle of 30-45°. Both the upper water tank (401) and the U-shaped groove (503) are connected to water inlet branch pipes (15). The main water inlet pipe (3) is connected to the water inlet branch pipes (15). Each water inlet branch pipe (15) is provided with a water inlet valve (16).
3. The water seal ring cooler upper and lower water tank protection system according to claim 2, characterized in that, The sedimentation and sewage discharge unit includes a sedimentation tank (17) and a sludge tank (18). A sludge pipe (19) is connected between the sedimentation tank (17) and the sludge tank (18). A sludge pump (20) is provided on the sludge pipe (19). A stirring element (21) is provided at one end of the sludge pipe (19) located in the sedimentation tank (17). The sewage collection trough (9) extends above the sedimentation tank (17). A sewage collection pipe (22) is connected at one end of the sewage collection trough (9) located in the sedimentation tank (17).
4. The water seal ring cooler upper and lower water tank protection system according to claim 3, characterized in that, The clear water circulation unit includes a clear water tank (23) and a drainage well (24). The clear water tank (23) and the sedimentation tank (17) are placed side by side. The height of the partition wall on the side of the clear water tank (23) and the sedimentation tank (17) that are in contact is lower than the height of the three partition walls that are not in contact. The clear water tank (23) is provided with a first water outlet pipe (25) and a second water outlet pipe (26). The first water outlet pipe (25) is connected to the main water inlet pipe (3). The second water outlet pipe (26) is connected to the drainage well (24). A water pump (27) is provided on both the first water outlet pipe (25) and the second water outlet pipe (26). A first water outlet valve (28) is provided on both the first water outlet pipe (25) and the second water outlet pipe (26).
5. The water seal ring cooler upper and lower water tank protection system according to claim 4, characterized in that, It also includes a high-temperature steam pipe (29), and both the sedimentation tank (17) and the clear water tank (23) are equipped with steam branch pipes (30). Both steam branch pipes (30) are connected to the high-temperature steam pipe (29), and the high-temperature steam pipe (29) is equipped with a steam inlet valve (31).
6. The water seal ring cooler upper and lower water tank protection system according to claim 5, characterized in that, The sedimentation tank (17) is equipped with a third outlet pipe (32), which is connected to the second outlet pipe (26). The third outlet pipe (32) is equipped with a second outlet valve (33).
7. The water seal ring cooler upper and lower water tank protection system according to claim 6, characterized in that, The upper water tank (401) and the U-shaped tank (503) are both equipped with level gauges (34). The water inlet valve (16), drain valve one (14), water outlet valve one (28), steam inlet valve (31) and water outlet valve two (33) are all solenoid valves. The level gauge (34), water inlet valve (16), drain valve one (14), water outlet valve one (28), steam inlet valve (31), water outlet valve two (33) and electric drain valve (7) are all interlocked with the PLC controller.
8. A method for protecting the upper and lower water tanks of a water-sealed ring cooler, characterized in that, Includes the following steps: S1: Initial sealing water is introduced into the upper and lower water tanks, and 11m of water is added to the upper water tank (401). 3 Add 58m of water to the drain tank (501). 3 water; S2: During equipment operation, the wastewater containing dust and impurities in the upper water tank (401) flows at a rate of 4-8m. 3 The water flows into the drain tank (501) at a rate of / h and mixes with the water containing sludge in the drain tank (501); S3: The mixed wastewater is sent to the collection tank (9) through the sewage pipe (6), and then discharged into the sedimentation tank (17) along the collection tank (9). The upper layer of water in the sedimentation tank (17) flows into the clear water tank (23) along the partition wall, and the lower layer of sludge is discharged into the sludge box (18) through the sludge pipe (19). At the same time, steam at 280-350℃ is introduced into the sedimentation tank (17) and the clear water tank (23). S4: The water entering the clear water tank (23) is sent back to the upper and lower water tanks through the outlet pipe (25) to form a circulating water supply system; S5: During steps S2 to S4, the level gauge (34) detects the liquid level of the upper and lower water tanks in real time. If it is lower than the liquid level set in step S1, the PLC controller transmits a signal of liquid level drop to the central control, and the central control sends a signal to the inlet valve (16) to open the valve until the liquid level returns to the set value. S6: After a single operation is completed, close the outlet valve 1 (28) and water pump 27 on outlet pipe 1 (25), and open the outlet valve 1 (28) and water pump 27 on outlet pipe 2 (26). If it is necessary to empty the sedimentation tank (17), open outlet valve 2 (33) at the same time to empty the wastewater in the equipment and discharge the wastewater into the drainage well (24).