High-temperature condensate water recycling device

Abstract

The present application belongs to the technical field of coking high-temperature condensate water recycling, and discloses a high-temperature condensate water recycling device, which comprises an expansion tank body with a condensate water inlet pipe welded to the inner wall of one side of the bottom, a first liquid discharge pipe welded to the inner wall of one side of the bottom of the expansion tank body, a negative pressure air extraction pipe welded to the top of the first liquid discharge pipe, a blowdown pipe welded to the shaft center of the bottom of the expansion tank body, and a blowdown assembly arranged on the inner wall of the bottom of the expansion tank body. The flowing low-temperature gaseous working medium is used for heat exchange with the high-temperature condensate water, which can effectively reduce the temperature of the high-temperature condensate water, realize heat recycling by sending the cooled condensate water to downstream users, drive the generator to rotate by the heated gaseous working medium, realize power generation, and recycle the generated high-temperature liquid working medium in the middle process for heat exchange, so that the high-temperature condensate water can be fully recycled and utilized.

Description

Technical Field

[0001] This invention relates to the field of high-temperature condensate recycling technology, and in particular to a high-temperature condensate recycling and reuse device. Background Technology

[0002] In existing coking plants, due to the large amount of waste heat in the system and the lack of low-grade heat users, high-temperature condensate cannot be directly utilized and requires additional external cooling water treatment. Currently, the recycling process of high-temperature condensate mostly involves cooling it with circulating water before sending it back to users for recycling, thus achieving heat energy recovery. However, in this process of recycling, when the high-temperature condensate is cooled to a suitable temperature for recycling, a large amount of heat energy from the condensate is often wasted, and a large amount of circulating cooling water is also consumed, which is both uneconomical and wasteful. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing a high-temperature condensate recycling and reuse device.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A high-temperature condensate recycling and reuse device includes an expansion tank with a condensate inlet pipe welded to the inner wall of one side of the bottom. A first drain pipe is welded to the bottom of one side of the inner wall of the expansion tank, and a negative pressure suction pipe is welded directly above the first drain pipe. A sewage pipe is welded to the bottom axis of the expansion tank, and a sewage discharge assembly is provided on the bottom inner wall of the expansion tank. The sewage discharge assembly includes a first rotating shaft rotatably disposed at the bottom axis of the expansion tank, and agitator blades evenly distributed are welded to the outer walls of the first rotating shaft along an inclined direction. A first helical gear is welded to the top outer wall of the first rotating shaft, and a second helical gear is vertically meshed and driven by the top of the first helical gear. A second rotating shaft is welded to the outer wall of the end of the second helical gear, and the second rotating shaft is rotatably disposed on a positioning bracket. A first magnet is adhered to the outer wall of the end of the second rotating shaft.

[0006] The end of the first drain pipe is fixed with a second gate valve by bolts, and a third gate valve is provided on one side of the second gate valve. A regulating valve is installed between the second gate valve and the third gate valve by bolts. A shut-off valve is provided at the bottom of the pipe at the end of the second gate valve and the third gate valve that are far apart from each other. The end of the third gate valve is connected to a hot water delivery pipe, and the hot water delivery pipe is connected to a heat exchange inner tank. An evaporation shell is provided on the outside of the heat exchange inner tank, and a low temperature reflux pipe is welded to the other end of the heat exchange inner tank.

[0007] One inner wall of the evaporator shell is connected to a conveying pipe, and a cylindrical outer shell is welded to the end of the conveying pipe away from the evaporator shell. A cylindrical inner shell is welded to the inner wall of the cylindrical outer shell, and a first connecting pipe is connected to the inner wall of one end of the cylindrical inner shell. An air inlet pipe is fixed to the end of the first connecting pipe by bolts, and a spiral heat exchanger pipe is welded to the air inlet pipe. A condenser shell is provided outside the spiral heat exchanger pipe, and a second drain pipe is welded to the inner wall of the end of the spiral heat exchanger pipe away from the air inlet pipe. The second drain pipe is connected to a refrigerant pump, and a second connecting pipe is screwed to the output end of the refrigerant pump. The second connecting pipe is connected to one inner wall of the evaporator shell. A water inlet pipe is connected to one inner wall of the condenser shell, and a drain pipe is connected to the other inner wall of the condenser shell.

[0008] Preferably, the top outer wall of the expansion tank is fixed with an end sealing cap by a snap lock, and the top inner wall of the end sealing cap is connected to a steam conveying pipe. The top of the steam conveying pipe is fixed with a check valve by bolts, and the top end of the check valve is connected to a first gate valve. The end of the first gate valve away from the check valve is connected to a deaerator inlet pipe.

[0009] Preferably, a cleaning scraper is welded to the outer wall of the top side of the first rotating shaft, and the outer wall of the end of the cleaning scraper is in close contact with the inner wall of the expansion tank. The thickness of the cleaning scraper is adapted to the gap between the first magnet and the inner wall of the expansion tank.

[0010] Preferably, a second magnet is provided on the outer wall of the expansion tank at the axis of the first magnet, and a servo motor is bonded to the axis of the second magnet.

[0011] Preferably, both the first and second magnets are made of AlNiCo magnets, and the first and second magnets have opposite magnetic properties.

[0012] Preferably, a fixed bracket is welded to one inner wall of the expansion tank, and a remote level gauge is inserted and installed on the fixed bracket.

[0013] Preferably, the heat exchange inner liner is arranged in a multi-disc shape, and the outer wall of the heat exchange inner liner is welded with equally spaced heat-conducting fins. The flow direction of the low-temperature, high-pressure gaseous working fluid inside the evaporator shell is opposite to the flow direction of the high-temperature condensate inside the heat exchange inner liner.

[0014] Preferably, the inner wall of the cylindrical inner shell is spirally provided with equally spaced mounting holes, and the inner wall of each mounting hole is welded with a flow guide nozzle. The inner wall of the cylindrical inner shell is provided with a propeller blade, and one end of the outer wall of the propeller blade is connected to a generator through a coupling.

[0015] Preferably, the flow direction of the working fluid on the inner wall of the spiral heat exchange tube is opposite to the flow direction of the cold water inside the condenser shell, and the size of the spiral heat exchange tube is adapted to the inner wall size of the condenser shell. Metal heat-conducting fins are welded to the outer wall of the spiral heat exchange tube.

[0016] The beneficial effects of this invention are as follows:

[0017] 1. The high-temperature condensate recovery and reuse device in this design uses a remote level gauge installed inside the expansion tank to transmit signals in real time and provide feedback on the water level inside the expansion tank. The remote level gauge is interlocked with the outlet regulating valve to maintain the liquid level inside the expansion tank within a safe range and prevent the liquid level from being too low and steam from leaking out.

[0018] 2. The high-temperature condensate recycling device designed in this paper uses a servo motor to drive the magnetic plate to rotate when treating the impurities inside the expansion tank. This drives the agitator blades on the inner wall of the expansion tank to rotate, and the centrifugal force is used to collect and settle the impurities. The cleaning scraper continuously adheres to the inner wall to clean, which can avoid excessive adhesion of impurities to the inner wall and reduce the frequency of subsequent cleaning and maintenance.

[0019] 3. The high-temperature condensate recovery and reuse device designed in this paper uses a flowing low-temperature gaseous working fluid to exchange heat with the high-temperature condensate. This not only effectively reduces the temperature of the high-temperature condensate, allowing it to be cooled and sent to downstream users for heat recovery and reuse, but also allows the heated gaseous working fluid to drive a generator to generate electricity. Furthermore, the high-temperature liquid working fluid recovered in the middle of the process can also be used for heat exchange, thus enabling full heat recovery and reuse of the high-temperature condensate. Attached Figure Description

[0020] Figure 1 This is a front view of the overall structure of a high-temperature condensate recycling and reuse device proposed in this invention.

[0021] Figure 2 This is a side view of the overall structure of a high-temperature condensate recycling and reuse device proposed in this invention.

[0022] Figure 3 This is a partial structural schematic diagram of a high-temperature condensate recycling and reuse device proposed in this invention.

[0023] Figure 4 This is a schematic diagram of the internal structure of a high-temperature condensate recycling and reuse device proposed in this invention;

[0024] Figure 5 This is a top view of the internal structure of the expansion tank of a high-temperature condensate recycling and reuse device proposed in this invention.

[0025] Figure 6This is a schematic diagram of the cross-sectional structure of the expansion tank of a high-temperature condensate recycling and reuse device proposed in this invention;

[0026] Figure 7 This is a first-view structural schematic diagram of a high-temperature condensate recycling and reuse device proposed in this invention.

[0027] In the diagram: 1. Condensate inlet pipe; 2. Expansion tank; 3. End sealing cap; 4. First drain pipe; 5. Negative pressure extraction pipe; 6. Steam delivery pipe; 7. Check valve; 8. First gate valve; 9. Deaerator inlet pipe; 10. Sewage pipe; 11. First rotating shaft; 12. Agitator blade; 13. First helical gear; 14. Cleaning scraper; 15. Second helical gear; 16. Second rotating shaft; 17. Positioning bracket; 18. First magnet; 19. Second magnet; 20. Servo motor; 21. Fixed bracket; 22. Remote level gauge; 23. Second... 24. Gate valve; 25. Regulating valve; 26. Third gate valve; 27. Shut-off valve; 28. Hot water delivery pipe; 29. ​​Evaporator shell; 30. Heat exchanger inner tank; 31. Low temperature reflux pipe; 32. Heat-conducting fins; 33. Delivery pipe; 34. Cylindrical outer shell; 35. Cylindrical inner shell; 36. Guide nozzle; 37. Propeller blade; 38. Generator; 39. First connecting pipe; 40. Inlet pipe; 41. Spiral heat exchanger tube; 42. Condenser shell; 43. Second drain pipe; 44. Refrigerant pump; 45. Second connecting pipe; 46. Water inlet pipe; 47. Drain pipe. Detailed Implementation

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0029] Example 1, referring to Figure 1-7 A high-temperature condensate recycling and reuse device includes an expansion tank 2 with a condensate inlet pipe 1 welded to the inner wall of one side of the bottom. A first drain pipe 4 is welded to the bottom of one side of the inner wall of the expansion tank 2, and a negative pressure suction pipe 5 is welded directly above the first drain pipe 4. A sewage pipe 10 is welded to the bottom axis of the expansion tank 2. An end sealing cover 3 is fixed to the top outer wall of the expansion tank 2 by a snap lock, and a steam conveying pipe 6 is connected to the top inner wall of the end sealing cover 3. A check valve 7 is fixed to the top of the steam conveying pipe 6 by bolts, and a first gate valve 8 is connected to the top end of the check valve 7. A deaerator inlet pipe 9 is connected to the end of the first gate valve 8 away from the check valve 7.

[0030] The bottom inner wall of the expansion tank 2 is provided with a sewage discharge assembly. The sewage discharge assembly includes a first rotating shaft 11 rotatably disposed at the bottom axis of the expansion tank 2, and agitator blades 12 are welded at equal intervals around the outer wall of the first rotating shaft 11 along the inclined direction. A first helical gear 13 is welded to the top outer wall of the first rotating shaft 11, and a cleaning scraper 14 is welded to one side of the top outer wall of the first rotating shaft 11. The outer wall of the end of the cleaning scraper 14 is in close contact with the inner wall of the expansion tank 2.

[0031] By installing a remote level gauge 22 inside the expansion tank 2, a signal can be transmitted in real time to provide feedback on the water level inside the expansion tank 2. The remote level gauge 22 is interlocked with the outlet regulating valve 24 to maintain the liquid level inside the expansion tank 2 within a safe range and prevent the liquid level from being too low and steam from leaking out.

[0032] The thickness of the cleaning scraper 14 is adapted to the gap size between the first magnet 18 and the inner wall of the expansion tank 2. The top of the first helical gear 13 is vertically engaged with and drives the second helical gear 15. The outer wall of the end of the second helical gear 15 is welded with the second rotating shaft 16. The second rotating shaft 16 is rotatably mounted on the positioning bracket 17. The outer wall of the end of the second rotating shaft 16 is bonded with the first magnet 18. The outer wall of the expansion tank 2 is provided with the second magnet 19 at the axis of the first magnet 18. The axis of the second magnet 19 is bonded with the servo motor 20.

[0033] The first magnet 18 and the second magnet 19 are both made of AlNiCo magnets, and the magnetism of the first magnet 18 and the second magnet 19 are opposite. A fixed bracket 21 is welded to one side of the inner wall of the expansion tank 2, and a remote liquid level gauge 22 is inserted and installed on the fixed bracket 21.

[0034] The end of the first drain pipe 4 is fixed with a second gate valve 23 by bolts, and a third gate valve 25 is provided on one side of the second gate valve 23. A regulating valve 24 is installed between the second gate valve 23 and the third gate valve 25 by bolts. A shut-off valve 26 is provided at the bottom of the pipe at the end of the second gate valve 23 and the third gate valve 25 that are far apart from each other. The end of the third gate valve 25 is connected to a hot water delivery pipe 27, and the hot water delivery pipe 27 is connected to a heat exchange inner tank 29. An evaporation shell 28 is provided on the outside of the heat exchange inner tank 29, and a low temperature reflux pipe 30 is welded to the other end of the heat exchange inner tank 29.

[0035] The heat exchange inner liner 29 is arranged in a multi-disc shape, and the outer wall of the heat exchange inner liner 29 is welded with equally spaced heat-conducting fins 31. The flow direction of the low-temperature and high-pressure gaseous working fluid inside the evaporator shell 28 is opposite to the flow direction of the high-temperature condensate inside the heat exchange inner liner 29. The inner wall of the cylindrical inner shell 34 is spirally provided with equally spaced mounting holes, and the inner wall of each mounting hole is welded with a flow guide nozzle 35. The inner wall of the cylindrical inner shell 34 is provided with a propeller blade 36, and one end of the outer wall of the propeller blade 36 is connected to a generator 37 through a coupling.

[0036] One inner wall of the evaporator shell 28 is connected to a conveying pipe 32, and a cylindrical outer shell 33 is welded to the end of the conveying pipe 32 away from the evaporator shell 28. A cylindrical inner shell 34 is welded to the inner wall of the cylindrical outer shell 33, and a first connecting pipe 38 is connected to the inner wall of one end of the cylindrical inner shell 34. An air inlet pipe 39 is fixed to the end of the first connecting pipe 38 by bolts, and a spiral heat exchange tube 40 is welded to the air inlet pipe 39. A condenser shell 41 is provided on the outside of the spiral heat exchange tube 40, and a second drain pipe 42 is welded to the inner wall of the end of the spiral heat exchange tube 40 away from the air inlet pipe 39. The working fluid flow direction inside the spiral heat exchange tube 40 is opposite to the cold water flow direction inside the condenser shell 41, and the size of the spiral heat exchange tube 40 is adapted to the inner wall size of the condenser shell 41. Metal heat-conducting fins are welded to the outer wall of the spiral heat exchange tube 40. The second drain pipe 42 is connected to the refrigerant pump 43, and the output end of the refrigerant pump 43 is screwed to the second connecting pipe 44. The second connecting pipe 44 is connected to the inner wall of one side of the evaporator shell 28. A water inlet pipe 45 is connected to the inner wall of one side of the condenser shell 41, and a drain pipe 46 is connected to the inner wall of the other side of the condenser shell 41.

[0037] When using this high-temperature condensate recycling device, first assemble the device and connect the inlet pipe 45 to the external cold water that needs heat exchange. Use the refrigerant pump 43 to pressurize the cold water working fluid inside the spiral heat exchange tube 40, turning it into a low-temperature, high-pressure gaseous working fluid, which is then input into the evaporator shell 28. After that, the high-temperature condensate to be recycled is transported to the condensate inlet pipe 1, thus flowing into the expansion tank 2. With the signal feedback from the remote level gauge 22, the liquid level of the high-temperature condensate is controlled between the negative pressure suction pipe 5 and the first drain pipe 4. After that, the negative pressure suction pipe 5 is connected to an external suction pump to evacuate the top space of the expansion tank 2 to achieve vacuum treatment, thereby flash evaporation of the high-temperature condensate, generating saturated steam at ~0.3MPa. After that, the first gate valve 8 is opened to allow the saturated steam to enter the deaerator through the deaerator inlet pipe 9 for deoxygenation. After flash evaporation... The remaining ~144℃ high-temperature condensate flows into the heat exchange inner tank 29, where it works in conjunction with the low-temperature, high-pressure gaseous working fluid flowing counter-currently inside the evaporator shell 28 to achieve heat exchange. This transforms the low-temperature, high-pressure gaseous working fluid into a high-temperature, high-pressure gaseous working fluid. The ~144℃ high-temperature condensate cools down to ~70℃ warm water and is sent downstream to users for heat recovery. The high-temperature, high-pressure gaseous working fluid enters the cylindrical outer shell 33 through a delivery pipe and is ejected through spirally distributed guide nozzles 35. This ejection drives the propeller blades 36 to rotate, which in turn drives the generator 37 to generate electricity. The ejected high-temperature, high-pressure gaseous working fluid then becomes a high-temperature, low-pressure gaseous working fluid. After entering the spiral heat exchange tube 40, the high-temperature, low-pressure gaseous working fluid exchanges heat with cold water, transforming into a low-temperature, liquid working fluid. This low-temperature, liquid working fluid is then transformed into a low-temperature, high-pressure gaseous working fluid by the refrigerant pump 43, thus achieving a cycle of heat absorption and processing.

[0038] Example 2, refer to Figure 3-7 A high-temperature condensate recycling and reuse device includes an expansion tank 2 with a condensate inlet pipe 1 welded to the inner wall of one side of the bottom. A first drain pipe 4 is welded to the bottom of one side of the inner wall of the expansion tank 2, and a negative pressure suction pipe 5 is welded directly above the first drain pipe 4. A sewage pipe 10 is welded to the bottom axis of the expansion tank 2. An end sealing cover 3 is fixed to the top outer wall of the expansion tank 2 by a snap lock, and a steam conveying pipe 6 is connected to the top inner wall of the end sealing cover 3. A check valve 7 is fixed to the top of the steam conveying pipe 6 by bolts, and a first gate valve 8 is connected to the top end of the check valve 7. A deaerator inlet pipe 9 is connected to the end of the first gate valve 8 away from the check valve 7.

[0039] The bottom inner wall of the expansion tank 2 is provided with a sewage discharge assembly. The sewage discharge assembly includes a first rotating shaft 11 rotatably disposed at the bottom axis of the expansion tank 2, and agitator blades 12 are welded at equal intervals around the outer wall of the first rotating shaft 11 along the inclined direction. A first helical gear 13 is welded to the top outer wall of the first rotating shaft 11, and a cleaning scraper 14 is welded to one side of the top outer wall of the first rotating shaft 11. The outer wall of the end of the cleaning scraper 14 is in close contact with the inner wall of the expansion tank 2.

[0040] The thickness of the cleaning scraper 14 is adapted to the gap size between the first magnet 18 and the inner wall of the expansion tank 2. The top of the first helical gear 13 is vertically engaged with and drives the second helical gear 15. The outer wall of the end of the second helical gear 15 is welded with the second rotating shaft 16. The second rotating shaft 16 is rotatably mounted on the positioning bracket 17. The outer wall of the end of the second rotating shaft 16 is bonded with the first magnet 18. The outer wall of the expansion tank 2 is provided with the second magnet 19 at the axis of the first magnet 18. The axis of the second magnet 19 is bonded with the servo motor 20.

[0041] When draining impurities from the inside of the expansion tank 2, the servo motor 20 drives the magnet to rotate, which in turn drives the agitator blade 12 on the inner wall of the expansion tank 2 to rotate. The centrifugal force is used to collect and settle the impurities, and the cleaning scraper 14 continuously adheres to the inner wall to clean it, which can prevent too much impurity from adhering to the inner wall and reduce the frequency of subsequent cleaning and maintenance.

[0042] The first magnet 18 and the second magnet 19 are both made of AlNiCo magnets, and the magnetism of the first magnet 18 and the second magnet 19 are opposite. A fixed bracket 21 is welded to one side of the inner wall of the expansion tank 2, and a remote liquid level gauge 22 is inserted and installed on the fixed bracket 21.

[0043] The end of the first drain pipe 4 is fixed with a second gate valve 23 by bolts, and a third gate valve 25 is provided on one side of the second gate valve 23. A regulating valve 24 is installed between the second gate valve 23 and the third gate valve 25 by bolts. A shut-off valve 26 is provided at the bottom of the pipe at the end of the second gate valve 23 and the third gate valve 25 that are far apart from each other. The end of the third gate valve 25 is connected to a hot water delivery pipe 27, and the hot water delivery pipe 27 is connected to a heat exchange inner tank 29. An evaporation shell 28 is provided on the outside of the heat exchange inner tank 29, and a low temperature reflux pipe 30 is welded to the other end of the heat exchange inner tank 29.

[0044] The heat exchange inner liner 29 is arranged in a multi-disc shape, and the outer wall of the heat exchange inner liner 29 is welded with equally spaced heat-conducting fins 31. The flow direction of the low-temperature and high-pressure gaseous working fluid inside the evaporator shell 28 is opposite to the flow direction of the high-temperature condensate inside the heat exchange inner liner 29. The inner wall of the cylindrical inner shell 34 is spirally provided with equally spaced mounting holes, and the inner wall of each mounting hole is welded with a flow guide nozzle 35. The inner wall of the cylindrical inner shell 34 is provided with a propeller blade 36, and one end of the outer wall of the propeller blade 36 is connected to a generator 37 through a coupling.

[0045] By using a flowing low-temperature gaseous working fluid to exchange heat with high-temperature condensate, the temperature of the high-temperature condensate can be effectively reduced, and the cooled condensate can be sent to downstream users for heat recovery. In addition, the heated gaseous working fluid can drive the generator 37 to generate electricity. Furthermore, the high-temperature liquid working fluid recovered in the middle process can also be used for heat exchange, thus enabling full heat recovery and utilization of the high-temperature condensate.

[0046] One inner wall of the evaporator shell 28 is connected to a conveying pipe 32, and a cylindrical outer shell 33 is welded to the end of the conveying pipe 32 away from the evaporator shell 28. A cylindrical inner shell 34 is welded to the inner wall of the cylindrical outer shell 33, and a first connecting pipe 38 is connected to the inner wall of one end of the cylindrical inner shell 34. An air inlet pipe 39 is fixed to the end of the first connecting pipe 38 by bolts, and a spiral heat exchange tube 40 is welded to the air inlet pipe 39. A condenser shell 41 is provided on the outside of the spiral heat exchange tube 40, and a second drain pipe 42 is welded to the inner wall of the end of the spiral heat exchange tube 40 away from the air inlet pipe 39. The working fluid flow direction inside the spiral heat exchange tube 40 is opposite to the cold water flow direction inside the condenser shell 41, and the size of the spiral heat exchange tube 40 is adapted to the inner wall size of the condenser shell 41. Metal heat-conducting fins are welded to the outer wall of the spiral heat exchange tube 40. The second drain pipe 42 is connected to the refrigerant pump 43, and the output end of the refrigerant pump 43 is screwed to the second connecting pipe 44. The second connecting pipe 44 is connected to the inner wall of one side of the evaporator shell 28. A water inlet pipe 45 is connected to the inner wall of one side of the condenser shell 41, and a drain pipe 46 is connected to the inner wall of the other side of the condenser shell 41.

[0047] When using this high-temperature condensate recycling device, first assemble the device and connect the inlet pipe 45 to the external cold water that needs heat exchange. Use the refrigerant pump 43 to pressurize the cold water working fluid inside the spiral heat exchange tube 40, turning it into a low-temperature, high-pressure gaseous working fluid, which is then input into the evaporator shell 28. After that, the high-temperature condensate to be recycled is transported to the condensate inlet pipe 1, thus flowing into the expansion tank 2. With the signal feedback from the remote level gauge 22, the liquid level of the high-temperature condensate is controlled between the negative pressure suction pipe 5 and the first drain pipe 4. After that, the negative pressure suction pipe 5 is connected to an external suction pump to evacuate the top space of the expansion tank 2 to achieve vacuum treatment, thereby flash evaporation of the high-temperature condensate, generating saturated steam at ~0.3MPa. After that, the first gate valve 8 is opened to allow the saturated steam to enter the deaerator through the deaerator inlet pipe 9 for deoxygenation. After flash evaporation... The remaining ~144℃ high-temperature condensate flows into the heat exchange inner tank 29, where it works in conjunction with the low-temperature, high-pressure gaseous working fluid flowing counter-currently inside the evaporator shell 28 to achieve heat exchange. This transforms the low-temperature, high-pressure gaseous working fluid into a high-temperature, high-pressure gaseous working fluid. The ~144℃ high-temperature condensate cools down to ~70℃ warm water and is sent downstream to users for heat recovery. The high-temperature, high-pressure gaseous working fluid enters the cylindrical outer shell 33 through a delivery pipe and is ejected through spirally distributed guide nozzles 35. This ejection drives the propeller blades 36 to rotate, which in turn drives the generator 37 to generate electricity. The ejected high-temperature, high-pressure gaseous working fluid then becomes a high-temperature, low-pressure gaseous working fluid. After entering the spiral heat exchange tube 40, the high-temperature, low-pressure gaseous working fluid exchanges heat with cold water, transforming into a low-temperature liquid working fluid. This low-temperature liquid working fluid is then transformed into a low-temperature, high-pressure gaseous working fluid by the refrigerant pump 43, thus achieving a cycle of heat absorption and processing.

[0048] During the cooling and recycling process of high-temperature condensate, in order to reduce internal impurities, the external servo motor 20 is activated to drive the second magnet 19 to rotate, which in turn drives the first magnet 18 inside the expansion tank 2 to rotate. This drives the agitator 12 at the shaft to rotate, using centrifugal force to accelerate the aggregation and sedimentation of impurities. Meanwhile, the impurities on the inner wall of the expansion tank 2 are cleaned by the continuously rotating cleaning scraper 14, thereby reducing the impurities mixed inside the high-temperature condensate and reducing the frequency of subsequent cleaning.

[0049] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0050] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0051] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A high-temperature condensate recycling and reuse device, comprising an expansion tank (2) with a condensate inlet pipe (1) welded to the inner wall of one side of its bottom, characterized in that, The expansion tank (2) has a first drain pipe (4) welded to the bottom of one side inner wall, and a negative pressure suction pipe (5) welded directly above the first drain pipe (4). The expansion tank (2) has a drain pipe (10) welded to the bottom axis, and a drain assembly is provided on the bottom inner wall of the expansion tank (2). The drain assembly includes a first rotating shaft (11) rotatably disposed at the bottom axis of the expansion tank (2), and agitator blades (12) are welded at equal intervals around the outer wall of the first rotating shaft (11) along the inclined direction. A first helical gear (13) is welded to the top outer wall of the first rotating shaft (11), and a second helical gear (15) is meshed vertically at the top of the first helical gear (13). A second rotating shaft (16) is welded to the outer wall of the end of the second helical gear (15), and the second rotating shaft (16) is rotatably disposed on the positioning bracket (17). A first magnet piece (18) is adhered to the outer wall of the end of the second rotating shaft (16). The end of the first drain pipe (4) is fixed with a second gate valve (23) by bolts, and a third gate valve (25) is provided on one side of the second gate valve (23). A regulating valve (24) is installed between the second gate valve (23) and the third gate valve (25) by bolts. A shut-off valve (26) is provided at the bottom of the pipe at the end of the second gate valve (23) and the third gate valve (25) that are far apart from each other. A hot water delivery pipe (27) is connected to the end of the third gate valve (25), and a heat exchange inner tank (29) is connected to the hot water delivery pipe (27). An evaporation shell (28) is provided on the outside of the heat exchange inner tank (29), and a low temperature reflux pipe (30) is welded to the other end of the heat exchange inner tank (29). One side of the inner wall of the evaporator shell (28) is connected to a conveying pipe (32), and a cylindrical outer shell (33) is welded to the end of the conveying pipe (32) away from the evaporator shell (28). A cylindrical inner shell (34) is welded to the inner wall of the cylindrical outer shell (33), and a first connecting pipe (38) is connected to the inner wall of one end of the cylindrical inner shell (34). An air inlet pipe (39) is fixed to the end of the first connecting pipe (38) by bolts, and a spiral heat exchanger tube (40) is welded to the air inlet pipe (39). The spiral heat exchanger tube (40) has an outer... The part is provided with a condenser shell (41), and a second drain pipe (42) is welded to the inner wall of the end of the spiral heat exchange tube (40) away from the air inlet pipe (39). The second drain pipe (42) is connected to a refrigerant pump (43), and a second connecting pipe (44) is screwed to the output end of the refrigerant pump (43). The second connecting pipe (44) is connected to the inner wall of one side of the evaporator shell (28). A water inlet pipe (45) is connected to one side of the inner wall of the condenser shell (41), and a drain pipe (46) is connected to the other side of the inner wall of the condenser shell (41). The inner wall of the cylindrical inner shell (34) is spirally provided with equally spaced mounting holes, and the inner wall of each mounting hole is welded with a flow guide nozzle (35). The inner wall of the cylindrical inner shell (34) is provided with a propeller blade (36), and one end of the outer wall of the propeller blade (36) is connected to a generator (37) via a coupling.

2. The high-temperature condensate recovery and reuse device according to claim 1, characterized in that, The top outer wall of the expansion tank (2) is fixed with an end sealing cap (3) by a snap lock, and the top inner wall of the end sealing cap (3) is connected to a steam conveying pipe (6). The top of the steam conveying pipe (6) is fixed with a check valve (7) by bolts, and the top end of the check valve (7) is connected to a first gate valve (8). The end of the first gate valve (8) away from the check valve (7) is connected to a deaerator inlet pipe (9).

3. The high-temperature condensate recovery and reuse device according to claim 1, characterized in that, A cleaning scraper (14) is welded to the outer wall of the top side of the first rotating shaft (11), and the outer wall of the end of the cleaning scraper (14) is in close contact with the inner wall of the expansion tank (2). The thickness of the cleaning scraper (14) is adapted to the gap size between the first magnet (18) and the inner wall of the expansion tank (2).

4. The high-temperature condensate recovery and reuse device according to claim 3, characterized in that, The outer wall of the expansion tank (2) is provided with a second magnet (19) at the axis of the first magnet (18), and a servo motor (20) is attached to the axis of the second magnet (19).

5. The high-temperature condensate recovery and reuse device according to claim 4, characterized in that, The first magnet (18) and the second magnet (19) are both made of AlNiCo magnets, and the magnetism of the first magnet (18) and the magnetism of the second magnet (19) are opposite.

6. The high-temperature condensate recovery and reuse device according to claim 1, characterized in that, A fixed bracket (21) is welded to one side of the inner wall of the expansion tank (2), and a remote level gauge (22) is inserted and installed on the fixed bracket (21).

7. The high-temperature condensate recovery and reuse device according to claim 1, characterized in that, The heat exchange inner liner (29) is distributed in a multi-disc shape, and the outer wall gap of the heat exchange inner liner (29) is welded with heat-conducting fins (31) distributed at equal intervals. The flow direction of the low-temperature and high-pressure gaseous working fluid inside the evaporation shell (28) is opposite to the flow direction of the high-temperature condensate inside the heat exchange inner liner (29).

8. The high-temperature condensate recovery and reuse device according to claim 1, characterized in that, The working fluid flow direction inside the spiral heat exchange tube (40) is opposite to the internal cold water flow direction of the condenser shell (41), and the size of the spiral heat exchange tube (40) is adapted to the inner wall size of the condenser shell (41). The outer wall of the spiral heat exchange tube (40) is welded with metal heat-conducting fins.

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