High-temperature condensed water recycling device

Abstract

The invention belongs to the technical field of coking high-temperature condensed water recycling, and discloses a high-temperature condensed water recycling device which comprises an expansion tank with a condensed water ingress pipe welded to the inner wall of one side of the bottom, and a first liquid discharge pipe welded to the bottom of the inner wall of one side of the expansion tank. A negative pressure exhaust pipe is welded to the position, over the first liquid drainage pipe, of the expansion tank, a blow-off pipe is welded to the axis of the bottom of the expansion tank, and a blow-off assembly is arranged on the inner wall of the bottom of the expansion tank. The flowing low-temperature gaseous working medium and the high-temperature condensed water are used for heat exchange treatment, the temperature of the high-temperature condensed water can be effectively reduced, the cooled high-temperature condensed water is sent to downstream users to achieve heat recycling, and the heated gaseous working medium can drive the generator to rotate to achieve power generation treatment; and in addition, the high-temperature liquid working medium recycled in the middle process can be used for heat exchange, so that the heat of the high-temperature condensed water can be fully recycled.

Description

Technical Field

[0001] The invention relates to the technical field of coking high-temperature condensate water recovery and utilization, and in particular to a high-temperature condensate water recovery and reuse device. Background Art

[0002] In existing coking enterprises, due to the large amount of waste heat in the system and the lack of low-grade heat users, high-temperature condensate cannot be used directly, and it needs to be cooled with the help of external cold water. At present, the recycling process of high-temperature condensate mostly uses circulating water to cool it down and then sends it to users for recycling and reuse, thereby realizing the recycling and utilization of heat energy. However, in the process of such treatment and recycling, when the high-temperature condensate is reduced to a suitable temperature for recycling, a large amount of heat energy of the high-temperature condensate is often wasted, and a large amount of circulating cooling water is consumed, which is not only uneconomical but also wasteful and serious. Summary of the invention

[0003] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a high-temperature condensate water recovery and reuse device.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A high-temperature condensate recovery and reuse device comprises an expansion tank body with a condensate inlet pipe welded to the inner wall of one side of the bottom, a first liquid discharge pipe is welded to the bottom of the inner wall of one side of the expansion tank body, and a negative pressure exhaust pipe is welded to the expansion tank body directly above the first liquid discharge pipe, a sewage pipe is welded at the axis center of the bottom of the expansion tank body, and a sewage discharge assembly is arranged on the inner wall of the bottom of the expansion tank body, the sewage discharge assembly comprises a first rotating shaft rotatably arranged at the axis center of the bottom of the expansion tank body, and stirring blades distributed at equal distances are welded on the outer walls around the first rotating shaft in an inclined direction, a first bevel gear is welded to the top outer wall of the first rotating shaft, and a second bevel gear is meshed and driven in a vertical direction at the top of the first bevel gear, a second rotating shaft is welded to the outer wall of the end of the second bevel gear, and the second rotating shaft is rotatably arranged on a positioning bracket, and a first magnet sheet is bonded to the outer wall of the end of the second rotating shaft;

[0006] A second gate valve is fixed to the end of the first liquid discharge pipe by bolts, and a third gate valve is arranged 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, and a stop valve is arranged at the bottom of the pipe at one end away from the second gate valve and the third gate valve, a hot water delivery pipe is connected to the end of the third gate valve, and the hot water delivery pipe is connected to a heat exchange tank, an evaporation shell is arranged outside the heat exchange tank, and a low-temperature reflux pipe is welded to the other end of the heat exchange tank;

[0007] The inner wall of one side of the evaporation protective shell is connected with a delivery pipe, and a cylindrical outer shell is welded to an end of the delivery pipe away from the evaporation protective 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 intake pipe is fixed to the end of the first connecting pipe by bolts, and a spiral heat exchange pipe is welded to the air intake pipe, a condensation outer shell is provided on the outside of the spiral heat exchange pipe, and a second liquid discharge pipe is welded to the inner wall of one end of the spiral heat exchange pipe away from the air intake pipe, the second liquid discharge pipe is connected to a refrigerant pump, and a second connecting pipe is screwed to an output end of the refrigerant pump, the second connecting pipe is connected to the inner wall of one side of the evaporation protective shell, an inner wall of one side of the condensation outer shell is connected to a water inlet pipe, and a drain pipe is connected to the inner wall of the other side of the condensation outer shell.

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

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

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

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

[0012] Preferably, a fixing bracket is welded to an inner wall of one side of the expansion tank body, and a remote liquid level meter is plugged and installed on the fixing bracket.

[0013] Preferably, the heat exchange liner is distributed in a multi-disc shape, and the outer wall gap of the heat exchange liner is welded with equidistantly distributed heat conducting fins, and the flow direction of the low-temperature and high-pressure gaseous working medium inside the evaporation shell is opposite to the flow direction of the high-temperature condensed water inside the heat exchange liner.

[0014] Preferably, the inner wall of the cylindrical inner shell is spirally provided with equally spaced mounting holes, and the inner walls of the mounting holes are welded with guide nozzles, the inner wall of the cylindrical inner shell is provided with propeller blades, and the outer wall of one end of the propeller blades is connected to a generator via a coupling.

[0015] Preferably, the working medium flow direction of the inner wall of the spiral heat exchange tube is opposite to the cold water flow direction inside the condensing shell, and the size of the spiral heat exchange tube is adapted to the inner wall size of the condensing shell, and the outer wall of the spiral heat exchange tube is welded with a metal heat conductive sheet.

[0016] The beneficial effects of the present invention are:

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

[0018] 2. The high-temperature condensate recycling device of this design uses a servo motor to drive the magnet sheet to rotate when discharging impurities inside the expansion tank, thereby driving the stirring blades on the inner wall of the expansion tank to rotate, and uses the centrifugal force to gather and precipitate impurities. The cleaning scraper is constantly attached to the inner wall for cleaning, which can avoid excessive adhesion of impurities on the inner wall and reduce the frequency of later cleaning and maintenance;

[0019] 3. The high-temperature condensate water recovery and reuse device of this design utilizes the flowing low-temperature gaseous working medium to carry out heat exchange treatment with the high-temperature condensate water, which can not only effectively reduce the temperature of the high-temperature condensate water and send it to downstream users for heat recovery after cooling, but also the heated gaseous working medium can drive the generator to rotate and realize power generation. In addition, the high-temperature liquid working medium recovered in the middle process can also be used for heat exchange, so that the high-temperature condensate water can be fully recovered and utilized for heat. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a front view of the overall structure of a high-temperature condensate water recovery and reuse device proposed by the present invention;

[0021] Figure 2 This is a side view of the overall structure of a high-temperature condensate water recovery and reuse device proposed by the present invention;

[0022] Figure 3 A partial structural schematic diagram of a high-temperature condensate water recovery and reuse device proposed by the present invention;

[0023] Figure 4 This is a schematic diagram of the internal structure of a high-temperature condensate water recovery and reuse device proposed by the present invention;

[0024] Figure 5 A top view of the internal structure of an expansion tank of a high-temperature condensate water recovery and reuse device proposed by the present invention;

[0025] Figure 6This is a schematic diagram of the cross-sectional structure of an expansion tank of a high-temperature condensate water recovery and reuse device proposed by the present invention;

[0026] Figure 7 This is a first-perspective structural schematic diagram of a high-temperature condensate water recovery and reuse device proposed by the present invention.

[0027] In the figure: 1, condensate inlet pipe; 2, expansion tank; 3, end sealing cover; 4, first drain pipe; 5, negative pressure exhaust pipe; 6, steam delivery pipe; 7, check valve; 8, first gate valve; 9, deaerator inlet pipe; 10, sewage pipe; 11, first rotating shaft; 12, stirring blade; 13, first bevel gear; 14, cleaning scraper; 15, second bevel gear; 16, second rotating shaft; 17, positioning bracket; 18, first magnet sheet; 19, second magnet sheet; 20, servo motor; 21, fixing bracket; 22, remote level gauge; 23, second Gate valve; 24, regulating valve; 25, third gate valve; 26, stop valve; 27, hot water delivery pipe; 28, evaporation shell; 29, heat exchange liner; 30, low-temperature reflux pipe; 31, heat transfer fins; 32, delivery pipe; 33, cylindrical outer shell; 34, cylindrical inner shell; 35, guide nozzle; 36, propeller blades; 37, generator; 38, first connecting pipe; 39, air intake pipe; 40, spiral heat exchange tube; 41, condensation shell; 42, second drain pipe; 43, refrigerant pump; 44, second connecting pipe; 45, water inlet pipe; 46, drain pipe. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0029] Example 1, reference Figure 1-7 A high-temperature condensate recovery and reuse device comprises an expansion tank body 2 with a condensate introduction pipe 1 welded to the inner wall of one side of the bottom, a first liquid discharge pipe 4 is welded to the bottom of the inner wall of one side of the expansion tank body 2, and a negative pressure exhaust pipe 5 is welded to the expansion tank body 2 just above the first liquid discharge pipe 4, a sewage discharge pipe 10 is welded to the axis of the bottom of the expansion tank body 2, an end sealing cover 3 is fixed to the top outer wall of the expansion tank body 2 by a buckle lock, and a steam delivery 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 delivery pipe 6 by bolts, and a first gate valve 8 is connected to the top end of the check valve 7, and a deaerator introduction pipe 9 is connected to the end of the first gate valve 8 away from the check valve 7;

[0030] A sewage discharge assembly is provided on the inner wall at the bottom of the expansion tank body 2, and the sewage discharge assembly includes a first rotating shaft 11 rotatably arranged at the axis center of the bottom of the expansion tank body 2, and stirring blades 12 distributed at equal distances are welded on the outer wall around the first rotating shaft 11 along the inclined direction, a first bevel gear 13 is welded on the outer wall at the top of the first rotating shaft 11, and a cleaning blade 14 is welded on the outer wall on one side of the top of the first rotating shaft 11, and the outer wall of the end of the cleaning blade 14 is in close contact with the inner wall around the expansion tank body 2;

[0031] By arranging a remote level gauge 22 inside the expansion tank 2, it is possible to transmit signals in real time to feedback the water level inside the expansion tank 2, and the remote level gauge 22 is interlocked with the outlet regulating valve 24 to maintain the liquid level in the expansion tank 2 within a safe range to prevent the liquid level from being too low and steam from leaking out.

[0032] The thickness of the cleaning blade 14 is adapted to the gap size between the first magnet sheet 18 and the inner wall of the expansion tank body 2, and the top of the first bevel gear 13 is vertically meshed with a second bevel gear 15 for driving, a second rotating shaft 16 is welded to the outer wall of the end of the second bevel gear 15, and the second rotating shaft 16 is rotatably arranged on the positioning bracket 17, a first magnet sheet 18 is bonded to the outer wall of the end of the second rotating shaft 16, a second magnet sheet 19 is arranged on the outer wall of the expansion tank body 2 at the axis of the first magnet sheet 18, and a servo motor 20 is bonded to the axis of the second magnet sheet 19;

[0033] The first magnet sheet 18 and the second magnet sheet 19 are both made of Al-Ni-Co magnets, and the magnetic properties of the first magnet sheet 18 and the second magnet sheet 19 are opposite. A fixing bracket 21 is welded to the inner wall of one side of the expansion tank 2, and a remote liquid level meter 22 is plugged and installed on the fixing bracket 21;

[0034] A second gate valve 23 is fixed to the end of the first liquid discharge pipe 4 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, and a stop valve 26 is provided at the bottom of the pipe at one end away from the second gate valve 23 and the third gate valve 25, a hot water delivery pipe 27 is connected to the end of the third gate valve 25, and the hot water delivery pipe 27 is connected to a heat exchange liner 29, an evaporation shell 28 is provided outside the heat exchange liner 29, and a low-temperature reflux pipe 30 is welded to the other end of the heat exchange liner 29;

[0035] The heat exchange liner 29 is distributed in a multi-disc shape, and the outer wall gap of the heat exchange liner 29 is welded with heat conducting fins 31 distributed at equal distances. The flow direction of the low-temperature and high-pressure gaseous working medium inside the evaporation shell 28 is opposite to the flow direction of the high-temperature condensed water inside the heat exchange liner 29. The inner wall of the cylindrical inner shell 34 is spirally opened with mounting holes distributed at equal distances, and the inner walls of the mounting holes are welded with guide nozzles 35. The inner wall of the cylindrical inner shell 34 is provided with a propeller blade 36, and the outer wall of one end of the propeller blade 36 is connected to a generator 37 through a coupling.

[0036] The inner wall of one side of the evaporation protective shell 28 is connected with a delivery pipe 32, and a cylindrical outer shell 33 is welded to the end of the delivery pipe 32 away from the evaporation protective 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 intake pipe 39 is fixed to the end of the first connecting pipe 38 by bolts, and a spiral heat exchange pipe 40 is welded to the air intake pipe 39, a condensation outer shell 41 is provided on the outside of the spiral heat exchange pipe 40, and a second drain pipe 42 is welded to the inner wall of the end of the spiral heat exchange pipe 40 away from the air intake pipe 39, The working medium flow direction of the inner wall of the spiral heat exchange tube 40 is opposite to the cold water flow direction inside the condensing shell 41, and the size of the spiral heat exchange tube 40 is adapted to the inner wall size of the condensing shell 41. A metal heat conductive plate is welded to the outer wall of the spiral heat exchange tube 40. 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 evaporating protective shell 28. The inner wall of one side of the condensing shell 41 is connected to a water inlet pipe 45, and the inner wall of the other side of the condensing shell 41 is connected to a drain pipe 46.

[0037] When the high-temperature condensate water recovery and reuse device is used, the device is first assembled, and the inside of the water inlet pipe 45 is connected to the external cold water that needs to be exchanged for heat. The cold water working medium in the spiral heat exchange tube 40 is pressurized by the refrigerant pump 43 to become a low-temperature and high-pressure gaseous working medium and input into the evaporation shell 28. After completion, the high-temperature condensate water that needs to be recycled is transported to the inside of the condensate water inlet pipe 1, and then flows into the inside of the expansion tank body 2. In conjunction with the signal feedback of the remote liquid level meter 22, the liquid level height of the high-temperature condensate water is controlled between the negative pressure exhaust pipe 5 and the first liquid discharge pipe 4. After completion, the negative pressure exhaust pipe 5 is first connected to the external exhaust pump to exhaust the top space of the expansion tank body 2 to achieve vacuum treatment, so that the high-temperature condensate water is flashed to generate saturated steam of ~0.3MPa. After completion, the first gate valve 8 is opened to allow the saturated steam to enter the deaerator along the deaerator inlet pipe 9 for deoxidation. After flash evaporation The remaining high-temperature condensate of ~144°C flows into the interior of the heat exchange liner 29, and cooperates with the low-temperature and high-pressure gaseous working medium flowing in the opposite direction inside the evaporation shell 28 to realize heat exchange processing, so that the low-temperature and high-pressure gaseous working medium becomes a high-temperature and high-pressure gaseous working medium, and the high-temperature condensate of ~144°C is cooled to become warm water of ~70°C and is sent to downstream users to realize heat recovery processing, and the high-temperature and high-pressure gaseous working medium enters the interior of the cylindrical shell 33 through the conveying pipe, and is ejected by the spirally distributed guide nozzle 35, which will drive the propeller blades 36 to rotate, thereby driving the generator 37 to rotate to realize power generation processing, and the ejected high-temperature and high-pressure gaseous working medium becomes a high-temperature and low-pressure gaseous working medium after processing, and the high-temperature and low-pressure gaseous working medium enters the interior of the spiral heat exchange tube 40, and is heat exchanged with the cold water to realize heat exchange and become a low-temperature liquid working medium, and the low-temperature liquid working medium is converted into a low-temperature and high-pressure gaseous working medium through the refrigerant pump 43, thereby realizing cyclic heat absorption processing.

[0038] Example 2, reference Figure 3-7 A high-temperature condensate recovery and reuse device comprises an expansion tank body 2 with a condensate introduction pipe 1 welded to the inner wall of one side of the bottom, a first liquid discharge pipe 4 is welded to the bottom of the inner wall of one side of the expansion tank body 2, and a negative pressure exhaust pipe 5 is welded to the expansion tank body 2 just above the first liquid discharge pipe 4, a sewage discharge pipe 10 is welded to the axis of the bottom of the expansion tank body 2, an end sealing cover 3 is fixed to the top outer wall of the expansion tank body 2 by a buckle lock, and a steam delivery 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 delivery pipe 6 by bolts, and a first gate valve 8 is connected to the top end of the check valve 7, and a deaerator introduction pipe 9 is connected to the end of the first gate valve 8 away from the check valve 7;

[0039] A sewage discharge assembly is provided on the inner wall at the bottom of the expansion tank body 2, and the sewage discharge assembly includes a first rotating shaft 11 rotatably arranged at the axis center of the bottom of the expansion tank body 2, and stirring blades 12 distributed at equal distances are welded on the outer wall around the first rotating shaft 11 along the inclined direction, a first bevel gear 13 is welded on the outer wall at the top of the first rotating shaft 11, and a cleaning blade 14 is welded on the outer wall on one side of the top of the first rotating shaft 11, and the outer wall of the end of the cleaning blade 14 is in close contact with the inner wall around the expansion tank body 2;

[0040] The thickness of the cleaning blade 14 is adapted to the gap size between the first magnet sheet 18 and the inner wall of the expansion tank body 2, and the top of the first bevel gear 13 is vertically meshed with a second bevel gear 15 for driving, a second rotating shaft 16 is welded to the outer wall of the end of the second bevel gear 15, and the second rotating shaft 16 is rotatably arranged on the positioning bracket 17, a first magnet sheet 18 is bonded to the outer wall of the end of the second rotating shaft 16, a second magnet sheet 19 is arranged on the outer wall of the expansion tank body 2 at the axis of the first magnet sheet 18, and a servo motor 20 is bonded to the axis of the second magnet sheet 19;

[0041] When the impurities in the expansion tank 2 are discharged, the servo motor 20 is used to drive the magnet sheet to rotate, thereby driving the stirring blade 12 on the inner wall of the expansion tank 2 to rotate, and the impurities are gathered and precipitated by the centrifugal force, and the cleaning scraper 14 is constantly attached to the inner wall for cleaning, which can avoid excessive adhesion of impurities on the inner wall and reduce the frequency of later cleaning and maintenance;

[0042] The first magnet sheet 18 and the second magnet sheet 19 are both made of Al-Ni-Co magnets, and the magnetic properties of the first magnet sheet 18 and the second magnet sheet 19 are opposite. A fixing bracket 21 is welded to the inner wall of one side of the expansion tank 2, and a remote liquid level meter 22 is plugged and installed on the fixing bracket 21;

[0043] A second gate valve 23 is fixed to the end of the first liquid discharge pipe 4 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, and a stop valve 26 is provided at the bottom of the pipe at one end away from the second gate valve 23 and the third gate valve 25, a hot water delivery pipe 27 is connected to the end of the third gate valve 25, and the hot water delivery pipe 27 is connected to a heat exchange liner 29, an evaporation shell 28 is provided outside the heat exchange liner 29, and a low-temperature reflux pipe 30 is welded to the other end of the heat exchange liner 29;

[0044] The heat exchange liner 29 is distributed in a multi-disc shape, and the outer wall gap of the heat exchange liner 29 is welded with heat conducting fins 31 distributed at equal distances. The flow direction of the low-temperature and high-pressure gaseous working medium inside the evaporation shell 28 is opposite to the flow direction of the high-temperature condensed water inside the heat exchange liner 29. The inner wall of the cylindrical inner shell 34 is spirally opened with mounting holes distributed at equal distances, and the inner walls of the mounting holes are welded with guide nozzles 35. The inner wall of the cylindrical inner shell 34 is provided with a propeller blade 36, and the outer wall of one end of the propeller blade 36 is connected to a generator 37 through a coupling.

[0045] The heat exchange treatment of the flowing low-temperature gaseous working medium and the high-temperature condensed water can not only effectively reduce the temperature of the high-temperature condensed water, and send it to the downstream users for heat recovery after cooling, but also the heated gaseous working medium can drive the generator 37 to rotate to achieve power generation, and the high-temperature liquid working medium recovered in the middle process can also be used for heat exchange, so that the high-temperature condensed water can be fully recovered and utilized;

[0046] The inner wall of one side of the evaporation protective shell 28 is connected with a delivery pipe 32, and a cylindrical outer shell 33 is welded to the end of the delivery pipe 32 away from the evaporation protective 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 intake pipe 39 is fixed to the end of the first connecting pipe 38 by bolts, and a spiral heat exchange pipe 40 is welded to the air intake pipe 39, a condensation outer shell 41 is provided on the outside of the spiral heat exchange pipe 40, and a second drain pipe 42 is welded to the inner wall of the end of the spiral heat exchange pipe 40 away from the air intake pipe 39, The working medium flow direction of the inner wall of the spiral heat exchange tube 40 is opposite to the cold water flow direction inside the condensing shell 41, and the size of the spiral heat exchange tube 40 is adapted to the inner wall size of the condensing shell 41. A metal heat conductive plate is welded to the outer wall of the spiral heat exchange tube 40. 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 evaporating protective shell 28. The inner wall of one side of the condensing shell 41 is connected to a water inlet pipe 45, and the inner wall of the other side of the condensing shell 41 is connected to a drain pipe 46.

[0047] When the high-temperature condensate water recovery and reuse device is used, the device is first assembled, and the inside of the water inlet pipe 45 is connected to the external cold water that needs to be exchanged for heat. The cold water working medium in the spiral heat exchange tube 40 is pressurized by the refrigerant pump 43 to become a low-temperature and high-pressure gaseous working medium and input into the evaporation shell 28. After completion, the high-temperature condensate water that needs to be recycled is transported to the inside of the condensate water inlet pipe 1, and then flows into the inside of the expansion tank body 2. In conjunction with the signal feedback of the remote liquid level meter 22, the liquid level height of the high-temperature condensate water is controlled between the negative pressure exhaust pipe 5 and the first liquid discharge pipe 4. After completion, the negative pressure exhaust pipe 5 is first connected to the external exhaust pump to exhaust the top space of the expansion tank body 2 to achieve vacuum treatment, so that the high-temperature condensate water is flashed to generate saturated steam of ~0.3MPa. After completion, the first gate valve 8 is opened to allow the saturated steam to enter the deaerator along the deaerator inlet pipe 9 for deoxidation. After flash evaporation The remaining high-temperature condensed water of ~144°C flows into the interior of the heat exchange liner 29, and cooperates with the low-temperature and high-pressure gaseous working medium flowing in the reverse direction inside the evaporation shell 28 to realize heat exchange processing, so that the low-temperature and high-pressure gaseous working medium becomes a high-temperature and high-pressure gaseous working medium, and the high-temperature condensed water of ~144°C is cooled to become warm water of ~70°C and is sent to downstream users to realize heat recovery processing, and the high-temperature and high-pressure gaseous working medium enters the interior of the cylindrical shell 33 through the conveying pipe, and is ejected by the spirally distributed guide nozzle 35, which will drive the propeller blades 36 to rotate, thereby driving the generator 37 to rotate to realize power generation processing, and the ejected high-temperature and high-pressure gaseous working medium becomes a high-temperature and low-pressure gaseous working medium after processing, and the high-temperature and low-pressure gaseous working medium enters the interior of the spiral heat exchange tube 40, and performs heat exchange processing with cold water, and becomes a low-temperature liquid working medium after heat exchange, and the low-temperature liquid working medium is converted into a low-temperature and high-pressure gaseous working medium through the refrigerant pump 43, thereby realizing cyclic heat absorption processing;

[0048] During the cooling and recycling process of the high-temperature condensate, in order to reduce internal impurities, the external servo motor 20 is started to drive the second magnet sheet 19 to rotate, thereby driving the first magnet sheet 18 inside the expansion tank body 2 to rotate, which can drive the stirring blade 12 at the axis to rotate, and use centrifugal force to accelerate the aggregation and precipitation of impurities. The impurities on the inner wall of the expansion tank body 2 are cleaned by the continuously rotating cleaning scraper 14, thereby reducing the impurities mixed in the high-temperature condensate and reducing the frequency of subsequent cleaning.

[0049] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0050] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0051] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A high-temperature condensate recovery and reuse device, comprising an expansion tank (2) with a condensate introduction pipe (1) welded to the inner wall of one side of the bottom, characterized in that: A first liquid discharge pipe (4) is welded to the bottom of the inner wall of one side of the expansion tank body (2), and a negative pressure exhaust pipe (5) is welded to the expansion tank body (2) just above the first liquid discharge pipe (4); a sewage discharge pipe (10) is welded at the axis of the bottom of the expansion tank body (2), and a sewage discharge assembly is arranged on the inner wall of the bottom of the expansion tank body (2), the sewage discharge assembly comprises a first rotating shaft (11) rotatably arranged at the axis of the bottom of the expansion tank body (2), and stirring blades (12) are welded to the outer walls around the first rotating shaft (11) along the inclined direction and are distributed at equal distances; a first bevel gear (13) is welded to the outer wall of the top of the first rotating shaft (11), and a second bevel gear (15) is meshed and driven in a vertical direction at the top of the first bevel gear (13); a second rotating shaft (16) is welded to the outer wall of the end of the second bevel gear (15), and the second rotating shaft (16) is rotatably arranged on a positioning bracket (17), and a first magnet sheet (18) is bonded to the outer wall of the end of the second rotating shaft (16); A second gate valve (23) is fixed to the end of the first liquid discharge pipe (4) by means of bolts, and a third gate valve (25) is arranged 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 means of bolts, and a stop valve (26) is arranged at the bottom of a pipe at one end away from the second gate valve (23) and the third gate valve (25), 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 protective shell (28) is arranged outside 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); The inner wall of one side of the evaporation protective shell (28) is connected to a delivery pipe (32), and an end of the delivery pipe (32) away from the evaporation protective shell (28) is welded to a cylindrical outer shell (33), the inner wall of the cylindrical outer shell (33) is welded to a cylindrical inner shell (34), and the inner wall of one end of the cylindrical inner shell (34) is connected to a first connecting pipe (38), an air intake pipe (39) is fixed to the end of the first connecting pipe (38) by bolts, and the air intake pipe (39) is welded to a spiral heat exchange pipe (40), and the outer surface of the spiral heat exchange pipe (40) is connected to the inner wall of the cylindrical inner shell (34). A condensing shell (41) is provided, and a second liquid discharge pipe (42) is welded to the inner wall of one end of the spiral heat exchange tube (40) away from the air inlet pipe (39), the second liquid discharge 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 evaporation shell (28), the inner wall of one side of the condensing shell (41) is connected to a water inlet pipe (45), and the inner wall of the other side of the condensing shell (41) is connected to a drain pipe (46).

2. A high-temperature condensate water recovery and reuse device according to claim 1, characterized in that: An end sealing cover (3) is fixed to the top outer wall of the expansion tank body (2) by a snap lock, and the top inner wall of the end sealing cover (3) is connected to a steam delivery pipe (6), a check valve (7) is fixed to the top of the steam delivery pipe (6) by bolts, and the top end of the check valve (7) is connected to a first gate valve (8), and the end of the first gate valve (8) away from the check valve (7) is connected to a deaerator introduction pipe (9).

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

4. A high-temperature condensate water recovery and reuse device according to claim 3, characterized in that: A second magnet sheet (19) is provided on the outer wall of the expansion tank body (2) at the axis center of the first magnet sheet (18), and a servo motor (20) is bonded to the axis center of the second magnet sheet (19).

5. The high-temperature condensate water recovery and reuse device according to claim 4, characterized in that: The first magnet sheet (18) and the second magnet sheet (19) are both made of aluminum nickel cobalt magnets, and the magnetic properties of the first magnet sheet (18) and the second magnet sheet (19) are opposite.

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

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

8. The high-temperature condensate water recovery and reuse device according to claim 1, characterized in that: The inner wall of the cylindrical inner shell (34) is provided with mounting holes which are distributed at equal distances in a spiral shape, and the inner walls of the mounting holes are all welded with flow guide nozzles (35). The inner wall of the cylindrical inner shell (34) is provided with a propeller blade (36), and the outer wall of one end of the propeller blade (36) is connected to a generator (37) via a coupling.

9. The high-temperature condensate water recovery and reuse device according to claim 1, characterized in that: The working medium flow direction of the inner wall of the spiral heat exchange tube (40) is opposite to the cold water flow direction inside the condensation shell (41), and the size of the spiral heat exchange tube (40) is compatible with the size of the inner wall of the condensation shell (41), and the outer wall of the spiral heat exchange tube (40) is welded with a metal heat conductive plate.

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