Efficient boiler rotating film deaerator
By designing a steam guiding mechanism and a motor drive, the problem of uneven hot steam entry is solved, achieving uniform combination of hot steam and water, improving the deoxygenation effect, and ensuring that the oxygen content of the effluent meets the standards.
Patent Information
- Application Number
- CN202520449138.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-13
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-03-13
AI Technical Summary
In existing boiler vortex film deaerators, the hot steam enters unevenly during the secondary addition of hot steam, resulting in poor deoxygenation and ineffective combination with water.
The steam guiding mechanism, including connecting pipes, rotary joints, T-tubes and steam outlets, is adopted. Through the design of gears and meshing toothed rings, the secondary heating steam is evenly introduced into the bottom of the deaerator and better combined with water. Combined with the steam guiding mechanism and motor drive, the uniform distribution of steam is achieved.
It improves the deoxygenation effect, allowing hot steam to combine better with water, thus enhancing the deoxygenation effect and ensuring that the oxygen content of the deaerator effluent meets the standard.
Smart Images
Figure CN223840348U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of high-efficiency boiler swirl film deaerator technology, specifically a high-efficiency boiler swirl film deaerator. Background Technology
[0002] Boiler deoxygenation refers to the removal of dissolved oxygen from boiler feedwater through a series of technical means to prevent oxygen from causing corrosion and other hazards to the boiler system. The following is a detailed introduction to boiler deoxygenation. Dissolved oxygen in the water is a key factor in the corrosion of boiler metal components. In the high-temperature and high-pressure boiler operating environment, oxygen reacts chemically with metal to form corrosion products such as rust. These corrosion products adhere to the boiler's heating surfaces and the inner walls of pipes, not only reducing the boiler's heat transfer efficiency and leading to energy waste, but also thinning the metal walls and reducing their strength. In severe cases, this can lead to boiler leaks, explosions, and other safety accidents.
[0003] In some existing boiler deaerators, when removing oxygen from inside the boiler, the partial pressure of steam on the water surface increases and the partial pressure of dissolved gas decreases through the swirling film tube inside the deaerator tower. Condensate and makeup water form a jet in the deaerator head and are violently mixed and heated. After the water temperature increases, it swirls downward to form a water film skirt. Under turbulent conditions, oxygen is separated and discharged into the atmosphere with the steam.
[0004] Existing boiler swirl film deaerators have the following problems: when removing oxygen from inside the boiler, the hot steam will enter through the inlet pipe during the secondary addition of hot steam, resulting in uneven entry and preventing the hot steam from combining with water effectively. To address this, we propose a high-efficiency boiler swirl film deaerator. Utility Model Content
[0005] The technical problem to be solved by this utility model is to overcome the existing defects and provide a high-efficiency boiler swirl film deaerator. When removing oxygen inside the boiler, the hot steam will be evenly distributed into the bottom of the deaerator tower during the secondary addition of hot steam, so that the hot steam can better combine with water, resulting in better deaeration effect and effectively solving the problems in the background technology.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-efficiency boiler vortex film deaerator, comprising a deaerator tower, an inlet pipe at the upper water inlet on the outer wall of the deaerator tower, a primary heating steam pipe at the upper steam inlet on the outer wall of the deaerator tower, uniformly distributed film-forming pipes at the upper interior of the deaerator tower, uniformly distributed water spray plates at the middle interior of the deaerator tower, uniformly distributed liquid-vapor mesh at the lower interior of the deaerator tower, a water tank at the lower end of the deaerator tower, and a steam guiding mechanism;
[0007] Steam guiding mechanism: It includes a connecting pipe, a rotary joint, a T-shaped pipe and a steam outlet. A secondary heating steam pipe is provided at the steam inlet on the lower side of the outer wall of the deaerator. A connecting pipe is provided at the inner end of the secondary heating steam pipe. The upper end of the connecting pipe is fixedly connected to the fixed end of the rotary joint. A T-shaped pipe is provided at the upper end of the rotating end of the rotary joint. The outer wall of the outer end of the T-shaped pipe has evenly distributed steam outlets. When removing oxygen from the boiler, when hot steam is added for the second time, the hot steam will enter the bottom of the deaerator evenly, so that the hot steam can better combine with water and the deaeration effect is better.
[0008] Furthermore, a control switch is provided on the outside of the deaerator, and the input end of the control switch is electrically connected to the output end of an external power supply to provide electrical connection.
[0009] Furthermore, the steam guiding mechanism also includes a slip ring and a support rod. An annular groove is provided on the lower inner wall of the deaerator. A slip ring is rotatably connected inside the annular groove. A support rod is fixedly connected to the inner wall of the slip ring. The inner end of the support rod is fixedly connected to the outside of the rotary joint, providing a rotatable connection.
[0010] Furthermore, the steam guiding mechanism also includes a toothed ring and a gear. The outer end of the slip ring is provided with a toothed ring, and a sealing cover is provided on the lower outer side of the deaerator. A rotating shaft is rotatably connected to the middle of the support plate inside the sealing cover. A gear is fixedly connected to the lower end of the rotating shaft. The toothed ring meshes with the gear to provide a rotatable connection.
[0011] Furthermore, the steam guiding mechanism also includes a motor, which is mounted on the upper end of a support plate inside the sealing cover. The lower end of the motor's output shaft is fixedly connected to the upper end of the rotating shaft, and the input end of the motor is electrically connected to the output end of a control switch to provide rotation drive.
[0012] Furthermore, the deaerator is equipped with a vent pipe at the upper steam outlet to facilitate exhaust.
[0013] Furthermore, the lower end of the water tank is provided with symmetrical support legs for support.
[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: This high-efficiency boiler vortex film deaerator has the following advantages:
[0015] The gears and meshing toothed rings cause the slip ring to rotate inside the annular groove, which in turn causes the support rod to drive the rotary joint to rotate the T-tube. The rotation of the T-tube will cause the secondary heating steam to be discharged evenly through the steam outlet. When removing oxygen from the boiler, when adding secondary hot steam, the hot steam will be evenly distributed into the bottom of the deaerator, allowing the hot steam to better combine with water and achieve a better deaeration effect. Attached Figure Description
[0016] Figure 1This is a schematic diagram of the structure of this utility model;
[0017] Figure 2 This is a schematic diagram of the front side cross-sectional structure of the present invention;
[0018] Figure 3 This is a cross-sectional structural diagram of the present invention.
[0019] In the diagram: 1 Deaerator, 2 Exhaust pipe, 3 Inlet pipe, 4 Primary heating steam pipe, 5 Film forming pipe, 6 Sprinkler plate, 7 Liquid-vapor network, 8 Secondary heating steam pipe, 9 Steam guiding mechanism, 91 Connecting pipe, 92 Rotary joint, 93 T-tube, 94 Steam outlet, 95 Slip ring, 96 Support rod, 97 Gear ring, 98 Gear, 99 Motor, 10 Sealing cover, 11 Water tank, 12 Support leg, 13 Control switch. Detailed Implementation
[0020] 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.
[0021] Please see Figure 1-3This embodiment provides a technical solution: a high-efficiency boiler vortex film deaerator, including a deaerator tower 1, an inlet pipe 3 at the water inlet on the upper side of the outer wall of the deaerator tower 1, a primary heating steam pipe 4 at the steam inlet on the upper side of the outer wall of the deaerator tower 1, uniformly distributed film-forming pipes 5 at the upper end of the interior of the deaerator tower 1, uniformly distributed water spray plates 6 in the middle of the interior of the deaerator tower 1, uniformly distributed liquid-vapor mesh 7 on the lower side of the interior of the deaerator tower 1, a water tank 11 at the lower end of the deaerator tower 1, and a steam guide. Mechanism 9, the deaerator tower 1 is equipped with a control switch 13 on its exterior. The input terminal of the control switch 13 is electrically connected to the output terminal of an external power supply. The upper steam outlet of the deaerator tower 1 is equipped with a steam exhaust pipe 2. The lower end of the water tank 11 is equipped with symmetrical support legs 12. When using the boiler vortex film deaerator, first connect the inlet pipe 3 and the primary heating steam pipe 4 to the external water and steam pipes. Inject water and steam simultaneously into the film-forming pipe 5 inside the deaerator tower 1. The water pressure will be higher than the pressure inside the deaerator, and the film will form under the pressure difference. The small hole of tube 5 enters the inner wall through the inlet pipe 3, generating jet motion at the outlet of the small hole. It then forms a water film that swirls downward along the inner wall of the film-forming tube 5. The primary heating steam enters the film-forming tube 5 through the primary heating steam pipe 4 and is injected into the film-forming tube 5 through the inclined hole at the bottom of the film-forming tube 5, generating a strong mixing and heating effect on the water, which greatly increases the water temperature and accelerates the rotation of the water film. Due to the centrifugal force, a hollow space is formed at the outlet of the film-forming tube 5, into which a rotating water film skirt is placed. Then, the water is evenly distributed on the liquid-vapor mesh 7 through the water spray plate 6. Next, the secondary heating steam enters the bottom of the deaerator 1 through the secondary heating steam pipe 8. In the liquid-vapor mesh 7, the water is separated into a film again, which greatly reduces the surface tension of the water and provides sufficient residence time to contact the secondary heating steam. The residual oxygen in the water is further precipitated inside the liquid-vapor mesh 7, so that the oxygen content of the deaerator effluent meets the standard. The oxygen vapor and carbon dioxide and other non-condensable gases removed in the two stages rise evenly with the steam and are discharged from the exhaust pipe 2.
[0022] Steam guiding mechanism 9 includes a connecting pipe 91, a rotary joint 92, a T-shaped pipe 93, and a steam outlet 94. A secondary heating steam pipe 8 is provided at the steam inlet on the lower side of the outer wall of the deaerator 1. A connecting pipe 91 is provided at the inner end of the secondary heating steam pipe 8. The upper end of the connecting pipe 91 is fixedly connected to the fixed end of the rotary joint 92. A T-shaped pipe 93 is provided at the upper end of the rotating end of the rotary joint 92. Evenly distributed steam outlets 94 are opened on the outer wall of the outer end of the T-shaped pipe 93. The steam guiding mechanism 9 also includes a slip ring 95 and a support rod 96. The lower inner wall of the deaerator 1 has an annular groove. A slip ring 95 is rotatably connected inside the annular groove. A support rod 96 is fixedly connected to the inner wall of the slip ring 95. The inner end of the support rod 96 is fixedly connected to the outer side of the rotary joint 92. The steam guiding mechanism 9 also includes a toothed ring 97 and a gear 98. A toothed ring 97 is provided on the outer end of the slip ring 95. A sealing cover 10 is provided on the lower outer side of the deaerator 1. A rotating shaft is rotatably connected to the middle of the support plate inside the sealing cover 10. A gear 98 is fixedly connected to the lower end of the rotating shaft. The toothed ring 97 and... Gear 98 meshes and connects (the central axes of gear ring 97, rotary joint 92, and slip ring 95 coincide; the outer surface of deaerator 1 is provided with a through-hole so that gear ring 97 and gear 98 can mesh; the sealing cover 10 protects the internal components and prevents gas leakage from the through-hole). The steam guiding mechanism 9 also includes a motor 99, which is located on the upper end of the support plate inside the sealing cover 10. The lower end of the output shaft of motor 99 is fixedly connected to the upper end of the rotating shaft. The input end of motor 99 is electrically connected to the output end of control switch 13. Then, by adjusting the control switch 13, motor 99 operates, and the output shaft of motor 99 drives the rotating shaft to rotate. The rotation of the rotating shaft drives gear 98 to rotate. The rotation of gear 98 drives slip ring 95 to rotate inside the annular groove through the meshing gear ring 97. The rotation of slip ring 95 drives rotary joint 92 to rotate through support rod 96. The rotation of rotary joint 92 drives T-tube 93 to rotate. The rotation of T-tube 93 causes secondary heating steam to be discharged evenly through steam outlet 94.
[0023] The working principle of this utility model for a high-efficiency boiler swirl film deaerator is as follows: When using the boiler swirl film deaerator, first connect the inlet pipe 3 to the external water pipe and steam pipe 4. Simultaneously inject water and steam into the film-forming pipe 5 inside the deaerator tower 1. The water pressure will be higher than the pressure inside the deaerator. Under the pressure difference, the water enters the inner wall of the film-forming pipe 5 through the small hole in the inlet pipe 3, generating jet motion at the outlet of the small hole. A water film then forms and swirls downwards along the inner wall of the film-forming pipe 5. The primary heating steam enters the film-forming pipe 5 from the primary heating steam pipe 4. The primary heating steam is injected into the film-forming pipe 5 through the inclined hole at the bottom of the film-forming pipe 5, generating a strong mixing and heating effect on the water, significantly increasing the water temperature and accelerating the rotation of the water film. Due to centrifugal force, a hollow space is formed at the outlet of the film-forming pipe 5, into which a rotating water film skirt is placed. Then, the water is evenly distributed on the liquid-vapor mesh 7 via the water spray plate 6, followed by secondary heating steam... Steam enters the bottom of the deaerator tower 1 from the secondary heating steam pipe 8. Then, through the control switch 13, the motor 99 operates. The output shaft of the motor 99 drives the rotating shaft to rotate, which in turn drives the gear 98 to rotate. The rotation of the gear 98 drives the slip ring 95 to rotate inside the annular groove through the meshing gear ring 97. The rotation of the slip ring 95 drives the rotary joint 92 to rotate through the support rod 96. The rotation of the rotary joint 92 drives the T-tube 93 to rotate. The rotation of the T-tube 93 causes the secondary heating steam to be discharged evenly through the steam outlet 94. In the liquid-vapor network 7, water is separated into a film again, which greatly reduces the surface tension of the water and provides sufficient residence time to contact the secondary heating steam. The residual oxygen in the water is further precipitated inside the liquid-vapor network 7, so that the oxygen content of the deaerator effluent meets the standard. The oxygen and non-condensable gases such as carbon dioxide removed in the two stages rise evenly with the steam and are discharged from the exhaust pipe 2.
[0024] It is worth noting that the motor 99 disclosed in the above embodiments can be YS8024, and the control switch 13 is provided with a switch button corresponding to the motor 99 for controlling its switching operation.
[0025] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A high-efficiency boiler vortex film deaerator, comprising a deaerator tower (1), wherein a water inlet pipe (3) is provided at the water inlet on the upper side of the outer wall of the deaerator tower (1), a primary heating steam pipe (4) is provided at the steam inlet on the upper side of the outer wall of the deaerator tower (1), uniformly distributed film-forming pipes (5) are provided at the upper end of the interior of the deaerator tower (1), uniformly distributed water spray plates (6) are provided in the middle of the interior of the deaerator tower (1), uniformly distributed liquid-vapor mesh (7) is provided on the lower side of the interior of the deaerator tower (1), and a water tank (11) is provided at the lower end of the deaerator tower (1), characterized in that: It also includes a steam guiding mechanism (9); Steam guiding mechanism (9): It includes a connecting pipe (91), a rotary joint (92), a T-shaped pipe (93) and a steam outlet (94). A secondary heating steam pipe (8) is provided at the steam inlet on the lower side of the outer wall of the deaerator (1). A connecting pipe (91) is provided at the inner end of the secondary heating steam pipe (8). The upper end of the connecting pipe (91) is fixedly connected to the fixed end of the rotary joint (92). A T-shaped pipe (93) is provided at the upper end of the rotating end of the rotary joint (92). A uniformly distributed steam outlet (94) is opened on the outer wall of the outer end of the T-shaped pipe (93).
2. The high-efficiency boiler swirl film deaerator according to claim 1, characterized in that: The deaerator tower (1) is equipped with a control switch (13) on its exterior. The input terminal of the control switch (13) is electrically connected to the output terminal of an external power supply.
3. The high-efficiency boiler swirl film deaerator according to claim 2, characterized in that: The steam guiding mechanism (9) also includes a slip ring (95) and a support rod (96). The lower inner wall of the deaerator (1) is provided with an annular groove. The slip ring (95) is rotatably connected inside the annular groove. The support rod (96) is fixedly connected to the inner wall of the slip ring (95). The inner end of the support rod (96) is fixedly connected to the outside of the rotary joint (92).
4. The high-efficiency boiler swirl film deaerator according to claim 3, characterized in that: The steam guiding mechanism (9) also includes a toothed ring (97) and a gear (98). The outer end of the slip ring (95) is provided with a toothed ring (97). The lower side of the deaerator (1) is provided with a sealing cover (10). The middle of the support plate inside the sealing cover (10) is rotatably connected to a rotating shaft. The lower end of the rotating shaft is fixedly connected to a gear (98). The toothed ring (97) and the gear (98) are meshed together.
5. A high-efficiency boiler swirl film deaerator according to claim 4, characterized in that: The steam guiding mechanism (9) also includes a motor (99), which is located on the upper end of the support plate inside the sealing cover (10). The lower end of the output shaft of the motor (99) is fixedly connected to the upper end of the rotating shaft, and the input end of the motor (99) is electrically connected to the output end of the control switch (13).
6. The high-efficiency boiler vortex film deaerator according to claim 1, characterized in that: The deaerator (1) is equipped with a steam exhaust pipe (2) at the upper steam outlet.
7. A high-efficiency boiler vortex film deaerator according to claim 1, characterized in that: The lower end of the water tank (11) is provided with symmetrical support legs (12).