Steam turbine salt water make-up atomizing device

Abstract

This utility model discloses a steam turbine brine replenishment atomizing device, relating to the field of flue gas treatment technology. It includes a boiler drum, with an inlet flue fixedly connected to one end and an outlet flue fixedly connected to the other end. A smoke baffle is welded and fixed to the inner wall of the boiler drum. A heat exchange assembly is fixedly connected to the inner cavity of the boiler drum, and the smoke baffle passes through the heat exchange assembly. An outer sleeve is fixedly fitted outside the inlet flue, and a high-pressure delivery pipe is fixedly installed inside the outer sleeve. An annular atomizing pipe is fixedly connected to the end of the high-pressure delivery pipe near the boiler drum. Multiple nozzles are uniformly welded circumferentially on one side of the annular atomizing pipe. An anti-clogging component is fixedly installed inside each nozzle and the high-pressure delivery pipe. Through the operation of the fluid-driven anti-clogging component, automatic descaling of the pipe inner wall is achieved without external power. The scraper ring and scraper sleeve are tightly fitted to the pipe wall, ensuring efficient removal of crystalline salt and preventing scale buildup.

Description

Technical Field

[0001] This utility model relates to the field of flue gas treatment technology, specifically a steam turbine brine replenishment atomization device. Background Technology

[0002] The steam turbine brine replenishment atomization device is mainly used to regulate flue gas temperature and replenish working fluid. By spraying atomized brine, the flue gas temperature is reduced, which can effectively improve the unit's thermal efficiency. However, it needs to be combined with anti-corrosion materials, fine filtration and automatic control to ensure stability. It is widely used in gas-steam combined cycle power plants, waste heat boiler systems and industrial high-temperature flue gas treatment.

[0003] The steam turbine brine replenishment atomization device mainly atomizes desalinated brine into micron-sized droplets through high-pressure nozzles and sprays them into the high-temperature flue gas. The droplets rapidly cool the gas by evaporating and absorbing heat, protecting the waste heat boiler's heating surfaces and maintaining the steam system's water balance.

[0004] However, in the high-temperature operating environment of waste heat boilers, the salt in the brine is prone to crystallize on the pipe wall and nozzle surface, forming a dense deposit layer. As the operating time goes by, the crystallized salt continues to accumulate, which will gradually reduce the nozzle diameter and even cause complete blockage, seriously affecting the normal operation and performance of the equipment.

[0005] Therefore, this utility model provides a steam turbine brine replenishment atomizing device to solve the problems mentioned above. Utility Model Content

[0006] The purpose of this invention is to provide a steam turbine brine replenishment atomizing device to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A steam turbine brine replenishment atomizing device includes a boiler drum, one end of which is fixedly connected to an inlet flue and the other end of which is fixedly connected to an outlet flue. Two parallel baffle plates are welded and fixed to the inner wall of the boiler drum. A heat exchange component is fixedly connected to the inner cavity of the boiler drum, and the heat exchange component passes through the baffle plates.

[0009] An outer sleeve is fixedly fitted around the outside of the inlet flue. A high-pressure infusion pipe is fixedly installed inside the inner cavity of the outer sleeve. An annular atomizing pipe is fixedly connected to one end of the high-pressure infusion pipe near the boiler drum. Multiple nozzles are uniformly welded circumferentially on one side of the annular atomizing pipe for spraying atomized brine to cool the flue gas and ensure that the atomized brine is fully mixed with the flue gas. Each nozzle and the inner cavity of the high-pressure infusion pipe are fixedly fitted with an anti-clogging component to prevent the equipment from becoming blocked.

[0010] As a further embodiment of this utility model, the anti-clogging component includes a spray pipe, which is fixedly installed on the outer wall of the annular atomizing pipe, and the other end of the spray pipe is rotatably connected to the nozzle. Two connecting brackets are fixedly installed on the inner wall of the spray pipe, and a rotating shaft is rotatably connected between the two brackets through a bearing. A scraper ring for scraping off crystallized salt is slidably sleeved on the outside of the rotating shaft.

[0011] As a further embodiment of this utility model, a spiral fan blade for driving the rotating shaft to rotate is fixedly connected to the outer wall of one end of the rotating shaft, and a moving block is slidably sleeved on the outer wall surface of the rotating shaft, and the moving block is fixedly connected to the scraper ring through a plug shaft.

[0012] As a further embodiment of this invention, the anti-clogging component also includes a fixed tube, which is fixedly connected to the axis of the high-pressure infusion tube. A bending rotating rod is rotatably installed inside the fixed tube, and a rotating block is fixedly connected to the outer wall of the bending rotating rod. A rotating sleeve is fixedly sleeved on the outer wall of the rotating block. Both sides of the rotating sleeve are symmetrically hinged with transmission rods via pins. Multiple scraping sleeves are fixedly sleeved on the outer walls of both transmission rods to effectively peel off crystalline salts from the tube wall to prevent clogging.

[0013] As a further embodiment of this utility model, a misting plate for forming water mist is fixedly connected to the inner wall of the nozzle, and a connecting shaft is fixedly connected to one end of the misting plate near the connecting frame. A rotating blade is fixedly sleeved on the outer wall of the connecting shaft to provide rotational power for the nozzle.

[0014] As a further embodiment of this utility model, the heat exchange assembly includes a heat exchange tube, which is fixedly installed in the inner cavity of the boiler drum. A collection bucket is fixedly installed on the upper surface of the boiler drum, and the collection bucket is fixedly connected to the heat exchange tube through a pipe. A recovery pipe is fixedly connected to the top of the collection bucket.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. When this utility model is used, the anti-clogging component driven by fluid operates to automatically clean the inner wall of the pipe without the need for external power. This effectively solves the problem of pipe blockage by crystallizing salt under high temperature in waste heat boilers. The scraper ring and scraper sleeve are in close contact with the pipe wall to ensure efficient removal of crystallizing salt, completely avoid the accumulation of salt scale, and prevent the equipment performance degradation caused by blockage from the root. This ensures the continuous and stable function of brine atomization cooling and guarantees the cooling effect of flue gas and the reliable operation of the entire system.

[0017] 2. When this utility model is used, the rotating blade drives the nozzle to rotate, effectively expanding the water mist coverage area. The spiral plate inside the nozzle guides the water flow to rotate, driving the rotating blade and mist plate to rotate. With the guidance of the inclined outer groove on the outer wall, the nozzle rotates while spraying water, so that the atomized salt water can cover the flue gas circulation area more evenly, ensuring full mixing with the high-temperature flue gas and improving the cooling efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a steam turbine brine replenishment atomizing device.

[0019] Figure 2 This is a structural cross-sectional view of a steam turbine brine replenishment atomizing device.

[0020] Figure 3 This is a cross-sectional view of the inlet flue in a steam turbine brine replenishment atomizing device.

[0021] Figure 4 This is a structurally exploded view of an anti-clogging component in a steam turbine brine replenishment atomizing device.

[0022] Figure 5 A detailed structural diagram of an anti-clogging component in a steam turbine brine replenishment atomizing device.

[0023] Figure 6 This is a cross-sectional view of the anti-clogging component in a steam turbine brine replenishment atomizing device.

[0024] In the diagram: 1. Boiler drum; 2. Inlet flue; 3. Outlet flue; 4. Smoke baffle; 5. Heat exchange assembly; 501. Heat exchange tube; 502. Collection tank; 503. Recovery pipe; 504. Water inlet pipe;

[0025] 6. Outer tube; 7. High-pressure infusion tube; 8. Annular atomizing tube; 9. Nozzle; 902. Atomizing plate; 903. Connecting shaft; 904. Rotating blade;

[0026] 10. Anti-clogging component; 101. Injection pipe; 102. Connecting frame; 103. Rotating shaft; 104. Scraper ring; 105. Spiral fan blade; 106. Moving block; 107. Guide groove; 108. Fixed pipe; 109. Bending rotating rod; 110. Rotating block; 111. Rotating sleeve; 112. Transmission rod; 113. Scraper sleeve; 114. Vortex scraper; 11. Control panel; 12. Support frame. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figure 1 , Figure 2 , Figure 3 In this embodiment of the present invention, a steam turbine brine replenishment atomizing device includes a boiler drum 1. One end of the boiler drum 1 is fixedly connected to an inlet flue 2, and the other end of the boiler drum 1 is fixedly connected to an outlet flue 3. Two parallel flue plates 4 are welded and fixed to the inner wall of the boiler drum 1 to divide the internal space of the boiler drum 1 into multiple flue gas circulation areas. A heat exchange component 5 is fixedly connected to the inner cavity of the boiler drum 1, and the heat exchange component 5 passes through the flue plates 4 to realize multi-pass heat exchange.

[0029] The inlet flue 2 is fixedly fitted with a stainless steel outer sleeve 6, forming an annular sandwich structure. A high-pressure liquid delivery pipe 7 is fixedly installed inside the outer sleeve 6. An annular atomizing pipe 8 is fixedly connected to one end of the high-pressure liquid delivery pipe 7 near the boiler drum 1. Multiple nozzles 9 are uniformly welded around one side of the annular atomizing pipe 8. Each nozzle 9 penetrates the wall of the outer sleeve 6 at a certain angle to spray atomized brine to cool the flue gas and ensure that the atomized brine is fully mixed with the flue gas. An anti-clogging component 10 is fixedly installed inside each nozzle 9 and the high-pressure liquid delivery pipe 7 to prevent the equipment from becoming blocked.

[0030] Specifically, a control panel 11 is fixedly installed at one end of the boiler drum 1 near the outlet flue 3. The control panel 11 integrates monitoring components such as temperature sensors, pressure transmitters and flow meters, which can display and adjust the operating parameters inside the boiler drum 1 in real time. A heavy-duty steel support frame 12 is fixedly installed at the bottom of the boiler drum 1 by bolts. The support frame 12 adopts an I-beam structure design and has adjustable shock-absorbing pads at its bottom to ensure the stability and seismic performance of the equipment during operation.

[0031] Please see Figure 4 , Figure 5 The anti-clogging component 10 includes a spray pipe 101, which is fixedly installed on the outer wall of the annular atomizing pipe 8. The other end of the spray pipe 101 is rotatably connected to the nozzle 9. Two connecting brackets 102 are fixedly installed on the inner wall of the spray pipe 101, and a rotating shaft 103 is rotatably connected between the two brackets through a bearing. A scraper ring 104 for scraping off crystallized salt is slidably sleeved on the outside of the rotating shaft 103. The scraper ring 104 is made of wear-resistant silicon carbide material and is in close contact with the inner wall of the spray pipe 101.

[0032] A spiral fan blade 105 for driving the rotating shaft 103 to rotate is fixedly connected to the outer wall of one end of the rotating shaft 103. A moving block 106 is slidably sleeved on the outer wall surface of the rotating shaft 103, and the moving block 106 is fixedly connected to the scraper ring 104 through the insert shaft. When the high-pressure brine passes through the spray pipe 101, the fluid drives the spiral fan blade 105 to drive the rotating shaft 103 to rotate, and at the same time pushes the moving block 106 to slide along the axial direction, thereby driving the scraper ring 104 to perform scraping motion on the inner wall of the pipe to achieve automatic scale removal function.

[0033] Specifically, the outer wall of the spiral fan blade 105 is provided with a guide groove 107, which is composed of a spiral groove and a straight groove, and the depth of the straight groove is greater than that of the spiral groove. The inner cavity of the moving block 106 is slidably connected to a locking block through a preload spring, and the locking block is located in the guide groove 107.

[0034] More specifically, to ensure the accuracy of the scraper ring 104's movement, a limiting groove is provided on the inner wall of the spray pipe 101, and the insert shaft in the moving block 106 passes through the scraper ring 104 and is located in the limiting groove, effectively constraining the scraper ring 104 to make axial linear movement, thoroughly removing the crystallized salt from the pipe wall, and avoiding movement interference.

[0035] Please see Figure 3 , Figure 6 The anti-clogging component 10 also includes a fixed tube 108, which is fixedly connected to the axis of the high-pressure infusion tube 7. A bending rotating rod 109 is rotatably installed in the inner cavity of the fixed tube 108. A rotating block 110 is fixedly connected to the outer wall of the bending rotating rod 109. A rotating sleeve 111 is fixedly sleeved on the outer wall of the rotating block 110. A transmission rod 112 is symmetrically hinged to both sides of the rotating sleeve 111 through a pin shaft. Multiple scraping sleeves 113 are fixedly sleeved on the outer walls of the two transmission rods 112 to effectively peel off the crystallized salt on the tube wall to prevent clogging.

[0036] Specifically, a vortex scraper 114 is fixedly installed on the outer wall of the rotating block 110. When the system is running, the fluid pushes the vortex scraper 114 to generate a rotational torque, which in turn drives the scraper sleeve 113 to move. The upper and lower ends of the bent rotating rod 109 are provided with reset torsion springs. When the fluid drives the vortex scraper 114 to rotate, the torsion spring generates a progressive resistance torque, which reaches equilibrium when the rotating rod rotates to a preset position, so that the rotating rod oscillates periodically within a preset range.

[0037] Please see Figure 3 , Figure 4 In order to enhance the spray coverage of nozzle 9, a misting plate 902 for forming water mist is fixedly connected to the inner wall of nozzle 9. A connecting shaft 903 is fixedly connected to one end of the misting plate 902 near the connecting frame 102, and the connecting shaft 903 is ball-hinged with one of the connecting frames 102. A rotating blade 904 is fixedly sleeved on the outer wall of the connecting shaft 903 to provide rotational power for nozzle 9.

[0038] Specifically, a protrusion block is fixedly installed on the inner wall of the nozzle 9 to prevent the nozzle 9 from slipping off, and an outer groove is correspondingly opened on the outer wall of the spray pipe 101 for the protrusion block to rotate, and the outer groove is at a certain angle relative to the spray pipe 101.

[0039] The water flow in the spray pipe 101 drives the rotating blade 904 to rotate, which in turn causes the mist plate 902 to drive the nozzle 9 to rotate synchronously. Combined with the guiding effect of the inclined outer groove, the spray coverage of the water mist is effectively expanded.

[0040] Please see Figure 2 The heat exchange assembly 5 includes a heat exchange tube 501, which is fixedly installed in the inner cavity of the boiler drum 1. A collection bucket 502 is fixedly installed on the upper surface of the boiler drum 1, and the collection bucket 502 is fixedly connected to the heat exchange tube 501 through a pipe. A recovery pipe 503 is fixedly connected to the top of the collection bucket 502.

[0041] Specifically, there are two heat exchange tubes 501, and each of the two heat exchange tubes 501 is fixedly connected to a water inlet pipe 504 at one end that is far apart from the other. The water inlet pipe 504 passes through the boiler drum 1 to form the input end of the working fluid. The heat exchange area is effectively increased by the double heat exchange tubes 501. The working fluid flows into the heat exchange tubes 501 through the water inlet pipe 504, absorbs the heat in the boiler drum 1, and then flows into the collection tank 502 through the pipe. Finally, the heat is recovered or recycled through the recovery pipe 503, realizing a highly efficient heat exchange process.

[0042] The working principle of this utility model is as follows:

[0043] When this utility model is in use, the flue gas containing heat first enters the boiler drum 1 from the inlet flue 2. Due to the two parallel flue plates 4 welded to the inner wall of the boiler drum 1, the internal space is divided into multiple flue gas flow areas. The flue gas needs to flow in tortuously in these areas, which increases the residence time and heat exchange path in the boiler drum 1. At the same time, the working fluid is transported by the pump body and flows into the heat exchange tube 501 through the water inlet pipe 504. During the flue gas flow, the heat exchange tube 501 absorbs the heat of the flue gas in the boiler drum 1. Then the working fluid carries the heat and flows into the collection tank 502 through the pipe. Finally, the heat is recovered or recycled through the recovery pipe 503, realizing multi-stage high-efficiency heat exchange.

[0044] When the flue gas temperature is too high during the operation of the device, the high-pressure brine flows into the annular atomizing pipe 8 through the high-pressure liquid delivery pipe 7, and then is sprayed into the flue gas in the boiler drum 1 through the nozzle 9. During this process, the water flow in the spray pipe 101 drives the rotating blade 904 to rotate, which in turn causes the atomizing plate 902 to drive the nozzle 9 to rotate synchronously. With the guiding effect of the inclined outer groove on the outer wall of the spray pipe 101, the spray coverage of the water mist is effectively expanded, ensuring that the atomized brine is fully mixed with the flue gas and achieving the cooling of the flue gas.

[0045] Meanwhile, to prevent the nozzle 9 and the inner cavity of the high-pressure infusion pipe 7 from being blocked by crystallized salt, when the high-pressure brine passes through, the fluid drives the spiral fan blade 105 to rotate the rotating shaft 103, and at the same time pushes the moving block 106 to slide axially. The moving block 106 is fixedly connected to the scraper ring 104 through the insert shaft, thereby driving the scraper ring 104 to perform scraping motion on the inner wall of the spray pipe 101 to scrape off the crystallized salt on the pipe wall. Combined with the guide groove 107 on the outer wall of the spiral fan blade 105 and the locking block and pre-compression spring in the moving block 106, and the limiting groove on the inner wall of the spray pipe 101, the scraper ring 104 is ensured to make precise axial linear movement to achieve automatic descaling.

[0046] Combined with the fluid in the high-pressure infusion tube 7 driving the vortex scraper 114 to generate rotational torque, driving the bending rotating rod 109, rotating block 110, and rotating sleeve 111 to rotate synchronously, causing the scraper sleeve 113 on the transmission rod 112 to move linearly, effectively stripping the crystallized salt from the wall of the high-pressure infusion tube 7. In addition, the reset torsion springs at the upper and lower ends of the bending rotating rod 109 cause the rotating rod to oscillate periodically within a preset range, continuously playing an anti-blocking role.

[0047] Secondly, the control panel 11 integrates monitoring components such as temperature sensors, pressure transmitters, and flow meters, which can monitor the operating parameters such as temperature, pressure, and flow rate inside the boiler drum 1 in real time and adjust them according to the set requirements.

[0048] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A steam turbine saltwater makeup atomizing device comprising a drum (1), characterized in that, One end of the boiler drum (1) is fixedly connected to an inlet flue (2), and the other end of the boiler drum (1) is fixedly connected to an outlet flue (3). Two parallel smoke baffles (4) are welded and fixed to the inner wall of the boiler drum (1). A heat exchange assembly (5) is fixedly connected to the inner cavity of the boiler drum (1), and the heat exchange assembly (5) passes through the smoke baffles (4). The inlet flue (2) is fixedly fitted with an outer sleeve (6), and a high-pressure infusion pipe (7) is fixedly installed in the inner cavity of the outer sleeve (6). An annular atomizing pipe (8) is fixedly connected to one end of the high-pressure infusion pipe (7) near the boiler drum (1). Multiple nozzles (9) are uniformly welded to one side of the annular atomizing pipe (8) to spray atomized brine to cool the flue gas. An anti-clogging component (10) is fixedly installed in the inner cavity of each nozzle (9) and the high-pressure infusion pipe (7) to prevent the equipment from becoming clogged.

2. A steam turbine saltwater makeup atomizing device according to claim 1, wherein, The anti-clogging component (10) includes a spray pipe (101), which is fixedly installed on the outer wall of the annular atomizing pipe (8), and the other end of the spray pipe (101) is rotatably connected to the nozzle (9). Two connecting brackets (102) are fixedly installed on the inner wall of the spray pipe (101), and a rotating shaft (103) is rotatably connected between the two through a bearing. A scraper ring (104) for scraping off crystallized salt is slidably sleeved on the outside of the rotating shaft (103).

3. A steam turbine saltwater make-up atomizing device as set forth in claim 2 wherein, One end of the rotating shaft (103) is fixedly connected to a spiral fan blade (105) for driving the rotating shaft (103) to rotate. A moving block (106) is slidably sleeved on the outer wall of the rotating shaft (103), and the moving block (106) is fixedly connected to the scraper ring (104) through a plug shaft.

4. A steam turbine saltwater make-up atomizing device as set forth in claim 2 wherein, The anti-clogging component (10) also includes a fixed tube (108), which is fixedly connected to the axis of the high-pressure infusion tube (7). A curved rotating rod (109) is rotatably installed in the inner cavity of the fixed tube (108). A rotating block (110) is fixedly connected to the outer wall of the curved rotating rod (109). A rotating sleeve (111) is fixedly sleeved on the outer wall of the rotating block (110). A transmission rod (112) is symmetrically hinged to both sides of the rotating sleeve (111) through a pin shaft. Multiple scraping sleeves (113) are fixedly sleeved on the outer walls of the two transmission rods (112) to effectively peel off the crystallized salt on the tube wall to prevent clogging.

5. A steam turbine saltwater makeup atomizing device as claimed in claim 1, wherein, The inner wall of the nozzle (9) is fixedly connected to a misting plate (902) for forming water mist. A connecting shaft (903) is fixedly connected to one end of the misting plate (902) near the connecting frame (102). A rotating blade (904) is fixedly sleeved on the outer wall of the connecting shaft (903) to provide rotational power for the nozzle (9).

6. A steam turbine saltwater makeup atomizing device according to claim 1 wherein, The heat exchange assembly (5) includes a heat exchange tube (501), which is fixedly installed in the inner cavity of the boiler drum (1). A collection bucket (502) is fixedly installed on the upper surface of the boiler drum (1), and the collection bucket (502) is fixedly connected to the heat exchange tube (501) through a pipe. A recovery pipe (503) is fixedly connected to the top of the collection bucket (502).

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