A power plant steam turbine exhaust dehumidification and purification device

Abstract

The application provides a power plant steam turbine exhaust steam dehumidification and purification device, which comprises a tank body, a filter layer and a buffer assembly. The tank body has a cavity, which is divided into a dehumidification cavity and a purification cavity. The tank body is provided with a steam inlet communicating with the dehumidification cavity and a steam outlet communicating with the purification cavity. The filter layer is arranged in the cavity. The buffer assembly is arranged in the dehumidification cavity and comprises a baffle component and a buffer component. Steam mixture discharged by a power plant steam turbine enters the dehumidification cavity through the steam inlet and impacts the baffle component. The baffle component is used for offsetting the impact force generated by the steam mixture under the elastic action of a first elastic member. The power plant steam turbine exhaust steam dehumidification and purification device has the advantages of long service life and high reliability.

Description

Technical Field

[0001] This invention belongs to the field of power plant steam turbine technology, specifically, it relates to a power plant steam turbine exhaust dehumidification and purification device. Background Technology

[0002] In related technologies, steam from the exhaust steam dehumidification and purification device of a power plant turbine impacts the baffle inside the device as it exits through the pipe. The liquid droplets carried by the high-speed steam collide with the baffle due to inertia, adhere to the surface of the baffle, collect into condensate, and are discharged by gravity. The steam then flows upward along the surface of the baffle, thus completing the separation of water and steam.

[0003] However, inside the device, condensate tends to linger on the plate surface and form a continuous water film. When the water film is washed by steam, it is easily torn into tiny droplets and carried away by the airflow, causing water molecules to return to the steam, reducing the steam dehumidification efficiency. Furthermore, it is prone to fatigue deformation and cracking due to continuous steam impact, resulting in poor reliability. Summary of the Invention

[0004] The present invention aims to at least partially solve one of the technical problems in the related art.

[0005] Therefore, embodiments of the present invention propose a power plant steam turbine exhaust dehumidification and purification device, which has the advantages of long service life and high reliability.

[0006] The power plant turbine exhaust dehumidification and purification device according to an embodiment of the present invention includes:

[0007] The tank has a cavity, which is divided into a dehumidification cavity and a purification cavity. The purification cavity is located above the dehumidification cavity. The tank has a steam inlet and a steam outlet. The steam inlet is connected to the dehumidification cavity, and the steam outlet is connected to the purification cavity. A filter layer is disposed within the cavity to divide the cavity into a dehumidification chamber and a purification chamber; A buffer assembly is disposed within the dehumidification chamber. The buffer assembly includes a baffle component and a buffer component. The buffer component includes a fixed seat, a sliding rod, and a first elastic element. The fixed seat is fixedly disposed on the bottom wall of the dehumidification chamber. The first end of the sliding rod is connected to the fixed seat and is movable along the height direction of the tank. The first elastic element is disposed between the first end of the sliding rod and the fixed seat. The baffle component includes a baffle body, which is connected to the second end of the slide rod. There are multiple baffle bodies, which are arranged at intervals along the circumference of the slide rod. The steam mixture discharged from the power plant turbine enters the dehumidification chamber through the steam inlet and impacts the baffle body. The baffle body is used to counteract the impact force generated by the steam mixture under the elastic action of the first elastic element.

[0008] In the power plant turbine exhaust dehumidification and purification device of this invention, when a high-speed steam mixture impacts the baffle body from the steam inlet, the impact force on the baffle body is transmitted to the sliding rod, causing it to move downwards (or upwards) along the fixed base, while simultaneously compressing or stretching the first elastic element. The first elastic element absorbs and stores the kinetic energy of the steam impact through its own elastic deformation, avoiding rigid collisions. This reduces the instantaneous impact stress on the baffle body and connecting structure, improving the service life and operational reliability of the device.

[0009] In some embodiments, the buffer assembly further includes a second elastic member, which is sleeved on the outer periphery of the slide rod, with a first end of the second elastic member abutting against the fixed seat and a second end of the second elastic member abutting against the baffle component.

[0010] In some embodiments, the baffle component further includes a limiting ring connected to the second end of the second elastic member, and the limiting ring is disposed between the second end of the second elastic member and the baffle body in the height direction of the tank.

[0011] In some embodiments, the baffle component further includes a first buffer pad disposed on the side of the limiting ring adjacent to the baffle body, and at least a portion of the first buffer pad abuts against the baffle body.

[0012] In some embodiments, the baffle component further includes a mounting plate having a mounting groove located at the edge of the mounting plate. There are multiple mounting grooves, each corresponding to a plurality of baffle bodies. The baffle bodies have mounting protrusions that are rotatably fitted into the mounting grooves about a first axis orthogonal to the axis of the tank.

[0013] In some embodiments, the baffle component further includes a guide plate, which is connected to and located above the mounting plate. In a plane orthogonal to the height direction of the tank, the projected area of ​​the guide plate is larger than the projected area of ​​the mounting plate.

[0014] In some embodiments, the baffle component further includes a second buffer pad, which is disposed between the guide plate and the mounting plate. There are multiple second buffer pads, and the multiple second buffer pads are arranged in a one-to-one correspondence with the multiple baffle bodies.

[0015] In some embodiments, the power plant turbine exhaust dehumidification and purification device of the present invention further includes a steam inlet pipe. The first end of the steam inlet pipe is disposed in the dehumidification chamber and arranged adjacent to the baffle body, and the second end of the steam inlet pipe extends outward from the tank body through the filter layer and the side wall of the purification chamber in sequence.

[0016] In some embodiments, the power plant turbine exhaust dehumidification and purification device of the present invention further includes a perforated layer, which is disposed in the dehumidification chamber and located between the baffle body and the steam inlet pipe. There are multiple perforated layers, which are spaced apart along the height direction of the tank.

[0017] In some embodiments, the dehumidification chamber has a drain pipe, the first end of which is connected to and located within the dehumidification chamber, and the purification chamber has an exhaust pipe, the first end of which is connected to and located at the top of the purification chamber. Attached Figure Description

[0018] Figure 1 This is a cross-sectional structural schematic diagram of the power plant steam turbine exhaust dehumidification and purification device according to an embodiment of the present invention.

[0019] Figure 2 This is a first-view cross-sectional schematic diagram of the buffer component of the power plant steam turbine exhaust dehumidification and purification device according to an embodiment of the present invention.

[0020] Figure 3 This is a second-view cross-sectional schematic diagram of the buffer component of the power plant steam turbine exhaust dehumidification and purification device according to an embodiment of the present invention.

[0021] Figure 4 This is an exploded structural diagram of the buffer component of the power plant steam turbine exhaust dehumidification and purification device according to an embodiment of the present invention.

[0022] Figure label: 1. Tank body; 11. Dehumidification chamber; 12. Purification chamber. 2. Filter layer 3. Baffle assembly; 31. Baffle body; 311. Mounting protrusion; 32. Limiting ring; 33. First buffer pad; 34. Mounting plate; 35. Mounting groove; 36. Guide plate; 37. Second buffer pad. 4. Buffer component; 41. Bracket; 42. Fixing base; 43. Slide rod; 44. First elastic element; 45. Second elastic element. 5. Steam inlet pipe; 51. Steam inlet port. 6. Pore layer, 7. Drainage pipe, 8. Exhaust pipe; 81. Exhaust port. Detailed Implementation

[0023] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0024] like Figures 1-4 As shown, the power plant turbine exhaust dehumidification and purification device of this embodiment includes: a tank 1, a filter layer 2, and a buffer assembly.

[0025] The tank 1 has a cavity, which is divided into a dehumidification chamber 11 and a purification chamber 12. The purification chamber 12 is located above the dehumidification chamber 11. The tank 1 has a steam inlet 51 and a steam outlet. The steam inlet 51 is connected to the dehumidification chamber 11, and the steam outlet is connected to the purification chamber 12. A filter layer 2 is disposed in the cavity to divide the cavity into the dehumidification chamber 11 and the purification chamber 12. Specifically, such as Figures 1-4 As shown, the tank 1 has an internal cavity, which is divided into two chambers by a filter layer 2: a lower dehumidification chamber 11 and an upper purification chamber 12. A steam inlet 51 is provided on the side wall or bottom of the tank 1, directly communicating with the dehumidification chamber 11. A steam outlet is provided on the top of the tank 1, directly communicating with the purification chamber 12.

[0026] The filter layer 2 spans and is fixed to the cavity wall inside the tank 1, with its edges sealed to the inner wall of the tank 1, ensuring that all steam must pass through the filter layer 2 before entering the purification chamber 12. The filter layer 2 can be made of various high-temperature and water-resistant materials, such as stainless steel woven mesh or sintered metal mesh, which can intercept solid impurities such as scale debris and dust particles mixed in the airflow.

[0027] A buffer assembly is located inside the dehumidification chamber 11. The buffer assembly includes a baffle component 3 and a buffer component 4. The buffer component 4 includes a fixed seat 42, a sliding rod 43, and a first elastic element 44. The fixed seat 42 is fixedly installed on the bottom wall of the dehumidification chamber 11. The first end of the sliding rod 43 is connected to the fixed seat 42 and is movable along the height direction of the tank 1. The first elastic element 44 is located between the first end of the sliding rod 43 and the fixed seat 42. The baffle component 3 includes a baffle body 31, which is connected to the second end of the sliding rod 43. There are multiple baffle bodies 31, which are arranged at intervals along the circumference of the sliding rod 43. The steam mixture discharged from the power plant turbine enters the dehumidification chamber 11 through the steam inlet 51 and impacts the baffle body 31. The baffle body 31 is used to offset the impact force generated by the steam mixture under the elastic action of the first elastic element 44.

[0028] like Figures 1-4 As shown, the fixed base 42 can be fixedly connected to the bottom wall of the dehumidification chamber 11 via the bracket 41. The upper end of the fixed base 42 has an opening, and the first end (lower end) of the slide rod 43 fits into the opening. The first elastic element 44 is installed in the opening and located at the bottom of the slide rod 43. The baffle body 31 is fixed to the second end (upper end) of the slide rod 43. Multiple baffle bodies 31 are arranged at intervals along the circumference of the slide rod 43. Optionally, the baffle body 31 can be a flat plate, corrugated plate, or curved surface structure perpendicular to the airflow.

[0029] Understandably, in related technologies, condensation on a fixed baffle easily forms a stable water film. However, in the power plant turbine exhaust dehumidification and purification device of this embodiment, the baffle body 31, supported by an elastic element, is in a state of dynamic micro-oscillation. Continuous impact of steam causes the baffle body 31 to continuously produce small-amplitude shaking or vibration. This continuous dynamic disturbance constantly disrupts the continuity of the water film on the baffle surface, making it difficult to form a large-area, stable, continuous water film. The water film is frequently torn into small water droplets, which are more likely to converge, enlarge, and flow down the baffle surface under the action of gravity.

[0030] In other words, because a water film is difficult to form, the large water film is prevented from being torn into fine droplets by high-speed steam, thus significantly reducing the secondary entrainment of separated droplets by steam and greatly improving dehumidification efficiency. The dynamic baffle increases the relative velocity and collision probability with the droplets, making it easier for the droplets to be captured. At the same time, its own small vibrations also help to quickly drain the liquid on the plate, achieving a self-cleaning effect.

[0031] In other words, in the power plant turbine exhaust dehumidification and purification device of this embodiment, when a high-speed steam mixture impacts the baffle body 31 from the steam inlet 51, the impact force on the baffle body 31 is transmitted to the slide rod 43, causing it to move downward (or upward) along the fixed seat 42, while simultaneously compressing or stretching the first elastic member 44. The first elastic member 44 absorbs and stores the kinetic energy of the steam impact through its own elastic deformation, avoiding rigid collisions. This reduces the instantaneous impact stress borne by the baffle body 31 and the connecting structure, improving the service life and operational reliability of the device.

[0032] In some embodiments, the buffer assembly further includes a second elastic member 45, which is sleeved on the outer periphery of the slide bar 43. The first end of the second elastic member 45 abuts against the fixed seat 42, and the second end of the second elastic member 45 abuts against the baffle member 3.

[0033] Specifically, such as Figures 1-4 As shown, the second elastic element 45 (such as a spring, bellows, etc.) is sleeved on the outer periphery of the slide rod 43. The first end of the second elastic element 45 abuts against the upper end surface of the fixed seat 42 (or is close to the stepped surface of the fixed seat 42). The second end of the second elastic element 45 abuts against the lower end surface of the baffle component 3, providing auxiliary support only by utilizing its elastic deformation.

[0034] Understandably, the first elastic element 44 absorbs axial impact energy; the second elastic element 45 is in direct contact with the baffle component 3. When the baffle sinks due to steam impact, the second elastic element 45 will be compressed simultaneously, sharing and absorbing the additional impact load. The two springs work in parallel to jointly attenuate the peak impact force, making the impact stress on the baffle component 3 smaller and more gradual.

[0035] In other words, the second elastic element 45 effectively applies a continuous preload, pressing the baffle component 3 towards the fixed seat 42, reducing the severe bouncing and idle travel of the baffle when subjected to intermittent impacts. This eliminates hard collisions caused by gaps, further reducing the risk of fatigue damage to mechanical parts and extending the trouble-free operation cycle of the device.

[0036] Furthermore, when the steam impact weakens or ceases, the first elastic element 44 provides the primary restoring force, but the second elastic element 45 assists in ensuring that the baffle component 3 returns to its initial equilibrium position more quickly and stably. This avoids the restoring lag or jamming that may occur in a single-spring system.

[0037] In some embodiments, the baffle component 3 further includes a limiting ring 32, which is connected to the second end of the second elastic member 45. In the height direction of the tank body 1, the limiting ring 32 is disposed between the second end of the second elastic member 45 and the baffle body 31.

[0038] like Figures 1-4 As shown, the lower end face of the limiting ring 32 is fixedly connected to the second end of the second elastic member 45 (e.g., by welding, snap-fitting, or fitting through a positioning step), making them a force transmission unit. The upper end face of the limiting ring 32 abuts against or is fixedly connected to the baffle body 31 (or other supporting structures of the baffle component 3, such as the lower surface of the lowest baffle), thereby realizing the force transmission path from the second elastic member 45 to the limiting ring 32 and the baffle body 31. The limiting ring 32 is sleeved on the outer periphery of the slide rod 43 (similar to the second elastic member 45), and there is an appropriate gap between its inner hole and the slide rod 43 to ensure free sliding without friction or jamming.

[0039] Understandably, without the limiting ring 32, the second end of the second elastic element 45 (such as a spring) maintains its position solely through friction between its end face and the surface of the baffle body 31 or through a small positioning step. Under long-term vibration or off-center loading, radial displacement may occur, or it may even slip off between the slide rod 43 and the baffle body 31, leading to elastic element failure. The limiting ring 32, through its inner hole and clearance fit with the slide rod 43, and its fixed connection (or tight contact) with the baffle body 31, provides a defined axial and radial constraint for the second elastic element 45, ensuring it always remains in its designed position and does not shift due to vibration, off-center loading, or long-term use. Furthermore, the rigidity of the limiting ring 32 prevents the second elastic element 45 from bending or laterally swaying during compression, thereby avoiding abnormal friction between the elastic element and the surface of the slide rod 43 and extending the service life of both the elastic element and the slide rod 43.

[0040] In some embodiments, the baffle component 3 further includes a first buffer pad 33, which is disposed on the side of the limiting ring 32 adjacent to the baffle body 31, and at least a portion of the first buffer pad 33 abuts against the baffle body 31.

[0041] like Figures 1-4 As shown, the lower surface of the first buffer pad 33 is abutted against the upper end face of the limiting ring 32 (by adhesive, fitting, or pressure alone). The upper surface of the first buffer pad 33 abuts against the lower surface of the baffle body 31 (or other supporting structures of the baffle component 3), and at least a portion of the surface remains in contact. During dynamic operation, the contact surfaces may not be completely abutted (a micro-gap exists), but they will be compressed when the elastic element is compressed.

[0042] Optionally, the first buffer pad 33 can be made of a material with appropriate elasticity and wear resistance, such as rubber, polyurethane, fluororubber or metal wire mesh pad, which can withstand a certain degree of compression deformation.

[0043] In other words, during steam flow fluctuations or the start-up / shutdown phase of the device, the baffle body 31 may momentarily jump, resulting in a rigid collision with the limiting ring 32. The elastic deformation of the first buffer pad 33 can absorb this impact energy, transforming the hard contact into a flexible contact, significantly reducing impact noise and instantaneous stress peaks. The damping characteristics of the first buffer pad 33 can attenuate high-frequency vibration components, preventing vibration from being transmitted through the limiting ring 32 to the second elastic element 45 and the fixed seat 42, thereby protecting the elastic element and other precision connection structures from high-frequency fatigue damage.

[0044] In some embodiments, the baffle component 3 further includes a mounting plate 34, the mounting plate 34 having a mounting groove 35 located at the edge of the mounting plate 34, and there are multiple mounting grooves 35, each corresponding to a multiple baffle bodies 31. The baffle body 31 has a mounting protrusion 311, which is rotatably fitted in the mounting groove 35 about a first axis, the first axis being orthogonal to the axis of the tank body 1.

[0045] like Figures 1-4 As shown, the mounting plate 34 is a rigid plate directly fixed to the second end of the slide rod 43 (e.g., welded, bolted, or integrally formed), or it can be a structural component indirectly connected to parts such as the limiting ring 32 and the second elastic element 45. The mounting plate 34 is located at the upper end of the slide rod 43 and extends along the height direction of the tank body 1, with its large surface perpendicular to the axial direction of the slide rod 43 (i.e., horizontally set). The mounting groove 35 is provided at the edge of the mounting plate 34. This edge can be the circumferential outer edge or a specific position on the inner side of the mounting plate 34. There are multiple mounting grooves 35, which are arranged at intervals along the contour or length direction of the mounting plate 34, and each mounting groove 35 corresponds one-to-one with a baffle body 31.

[0046] Each baffle body 31 has a cylindrical, spherical, or similar geometrically shaped protrusion at its end or side edge. This protrusion extends into a corresponding mounting groove 35 and is capable of free rotation about a first axis. This first axis is a horizontal direction orthogonal to the axis of the tank body 1 (i.e., the height direction), thus allowing the baffle body 31 to swing about this horizontal axis (similar to the movement of a hinge). The mounting protrusion 311 forms a hinged connection with the mounting groove 35, allowing the baffle body 31 to rotate freely about the horizontal axis under its own weight and steam impact force. The rotation angle is limited by the geometry of the groove or a limiting structure (to prevent excessive swinging).

[0047] In other words, when high-speed steam impacts the baffle from the side of the steam inlet 51 (usually at an angle to the axis of the tank 1), the baffle body 31 automatically deflects backward around the horizontal axis under the thrust of the airflow (i.e., the airflow tends to push it away). The angle of attack is dynamically balanced by the steam velocity and the rigid restoring force (provided by the gravitational component and optional other spring forces), achieving automatic adjustment. Compared to a baffle with a fixed angle, the rotatable baffle decomposes the positive impact force through deflection, significantly reducing the instantaneous stress peak applied to the baffle surface, slide bar 43, and elastic element, further improving the fatigue resistance and reliability of the device.

[0048] Furthermore, when the baffle deflects, its tilt angle changes with the operating conditions. Condensate is more likely to overcome surface tension on the tilted surface, accelerating its downward flow and preventing the formation of a stable thick water film on the surface, thus reducing secondary entrainment. During steam pulsation or flow fluctuations, the baffle itself will oscillate slightly. This dynamic disturbance continuously disrupts the continuity of the water film, causing droplets to quickly coalesce into larger droplets and slide off, thereby improving dehumidification efficiency.

[0049] In some embodiments, the baffle component 3 further includes a guide plate 36, which is connected to and located above the mounting plate 34. In a plane orthogonal to the height direction of the tank body 1, the projected area of ​​the guide plate 36 is larger than the projected area of ​​the mounting plate 34.

[0050] like Figures 1-4 As shown, the guide plate 36 is fixedly connected to the mounting plate 34 (e.g., by welding, bolting, or integral molding) and is located above the mounting plate 34. A certain gap exists between the two in the height direction (axial direction) of the tank body 1 (this gap can be formed by supports, spacers, or bending structures).

[0051] In a plane orthogonal to the height of the tank 1 (i.e., in the horizontal projection direction), the projected area of ​​the guide plate 36 is larger than that of the mounting plate 34. This means that the guide plate 36 extends outward in the horizontal direction, covering and extending beyond the edge of the mounting plate 34. The guide plate 36 is located above the rotatable baffle body 31 and the detachable mounting structure, directly facing the steam flow rising from the dehumidification chamber 11, preparing to enter the filter layer 2 and the purification chamber 12.

[0052] Understandably, without the deflector 36, the steam rising from the bottom of the dehumidification chamber 11 may exhibit an uneven velocity distribution, with extremely high velocity in some areas, directly impacting the mounting plate 34 and the baffle connection structure, resulting in airflow disturbance and pressure drop fluctuations. The large-area coverage of the deflector 36 blocks and disperses the rising airflow, forcing the steam to flow around the outer periphery of the deflector 36, thereby homogenizing and diffusing the concentrated airflow.

[0053] After being buffered and dispersed by the guide plate 36, the airflow speed reaching the upper filter layer 2 is more uniform, which avoids premature damage or blockage of local areas of the filter layer 2 due to the impact of high-speed airflow, and extends the service life of the filter layer 2.

[0054] Furthermore, the guide vane 36 can be an umbrella-shaped structure, meaning that the lower surface of the guide vane 36 forms a droplet interception surface. When steam carries fine droplets upwards, they encounter the obstruction of the guide vane 36, and the droplets impact the lower surface of the guide vane 36 due to inertia, adhering and coalescing. Since the area of ​​the guide vane 36 is larger than that of the mounting plate 34, its effective interception area is significantly increased, enabling it to capture more fine mist that fails to separate in the area of ​​the baffle body 31.

[0055] In some embodiments, the baffle component 3 further includes a second buffer pad 37, which is disposed between the guide plate 36 and the mounting plate 34. There are multiple second buffer pads 37, and the multiple second buffer pads 37 are arranged in a one-to-one correspondence with multiple baffle bodies 31.

[0056] like Figures 1-4 As shown, the second buffer pad 37 is disposed between the lower surface of the guide plate 36 and the upper surface of the mounting plate 34, located in the interlayer space formed by the two. There are multiple second buffer pads 37, and the projection position of each second buffer pad 37 in the height direction corresponds to a baffle body 31 (i.e., located in the area directly above or aligned with the baffle body 31), so that there is an independent buffer pad above each baffle body 31.

[0057] The upper surface of the second buffer pad 37 is attached to or abuts against the lower surface of the guide plate 36 (it can be fixed by adhesive, fitting, or compression). The lower surface of the second buffer pad 37 is attached to or abuts against the upper surface of the mounting plate 34. In the static assembly state, the second buffer pad 37 may be in a slightly pre-compressed state to ensure close contact with the upper and lower surfaces and eliminate gaps. The second buffer pad 37 is made of a material with appropriate elasticity, damping, and temperature resistance (such as high-temperature resistant rubber, silicone, polyurethane, or metal rubber).

[0058] In other words, when the baffle body 31 is deflected or vibrates due to steam impact, its movement is transmitted to the mounting plate 34 through the mounting protrusion 311, which may cause the mounting plate 34 to vibrate. If the mounting plate 34 and the guide plate 36 are rigidly connected, the vibration will be directly transmitted to the guide plate 36, causing the guide plate 36 to generate high-frequency micro-vibrations or even fatigue cracks. The elastic deformation of the second buffer pad 37 can absorb and isolate the vibration transmitted from the mounting plate 34, protecting the guide plate 36 from fatigue damage.

[0059] In some embodiments, the power plant turbine exhaust dehumidification and purification device of the present invention further includes a steam inlet pipe 5. The first end of the steam inlet pipe 5 is disposed in the dehumidification chamber 11 and arranged adjacent to the baffle body 31. The second end of the steam inlet pipe 5 extends outward from the tank body 1 through the filter layer 2 and the side wall of the purification chamber 12 in sequence.

[0060] like Figures 1-4 As shown, the first end of the steam inlet pipe 5 is located inside the dehumidification chamber 11 and is arranged adjacent to the baffle body 31. That is, the outlet of the first end of the steam inlet pipe 5 is directly facing or close to the frontal surface of the baffle body 31, so that the high-speed steam mixture can quickly impact the baffle body 31 as soon as it enters the tank 1.

[0061] The second end of the steam inlet pipe 5 originates from the dehumidification chamber 11, passes through the filter layer 2 (i.e., through the openings or gaps in the filter layer 2), then passes through the side wall of the purification chamber 12, and finally extends outwards from the tank body 1 to connect with the external steam source pipeline. A sealing structure (such as a sealing ring, stuffing box, or welded seal) is provided at the point where the steam inlet pipe 5 passes through the filter layer 2 and the side wall of the purification chamber 12 to prevent steam from leaking from this gap into the purification chamber 12 or the external environment, and also to prevent clean steam in the purification chamber 12 from flowing back into the dehumidification chamber 11.

[0062] Understandably, if the steam inlet 51 were directly located on the side wall or bottom of the dehumidification chamber 11, the high-temperature, high-pressure steam would rush directly towards the lower surface of the filter layer 2 at extremely high speed, causing the filter fibers to be crushed, clogged, or locally overheated and burned. In this design, the steam inlet pipe 5 guides the steam directly to the baffle area near the bottom of the dehumidification chamber 11, away from the filter layer 2. When the steam impacts the baffle and turns upward, its speed is significantly reduced, and after being buffered, it rises evenly to the filter layer 2, significantly reducing the impact load on the filter layer 2 and extending its lifespan.

[0063] In addition, part of the steam inlet pipe 5 is placed inside the purification chamber 12. Since the steam mixture discharged from the power plant turbine has a certain temperature, the steam inlet pipe 5 can also be used to heat the purification chamber 12 to ensure that the temperature inside the purification chamber 12 is within a certain range, so that the steam can still maintain a steam state after entering the purification chamber 12 from the dehumidification chamber 11, so as to facilitate collection.

[0064] In some embodiments, the power plant turbine exhaust dehumidification and purification device of the present invention further includes a perforated layer 6, which is disposed in the dehumidification chamber 11 and located between the baffle body 31 and the steam inlet pipe 5. There are multiple perforated layers 6, which are arranged at intervals along the height direction of the tank body 1.

[0065] like Figures 1-4 As shown, the perforated layer 6 is located within the dehumidification chamber 11, spatially positioned between the first end (outlet) of the steam inlet pipe 5 and the baffle body 31. That is, after steam is ejected from the steam inlet pipe 5, it first passes through the perforated layer 6 before impacting the baffle body 31. Multiple perforated layers 6 are arranged at intervals along the height direction (axial direction) of the tank 1. These perforated layers 6 maintain a certain distance from each other, forming a multi-level structure stacked vertically.

[0066] The edge of the perforated layer 6 is fixedly connected to the inner wall of the dehumidification chamber 11 (e.g., by welding, bolting, or clamping with retaining rings) to ensure its stable position and that all steam must pass through the perforated layer 6 to continue flowing upward. The perforated layer 6 itself is a single or multi-perforated plate, screen, or plate-like structure with densely packed small holes, the size and distribution of which can be adjusted according to design requirements.

[0067] Understandably, the steam at the outlet of the steam inlet pipe 5 is typically in the form of a high-speed jet, with a concentrated impact range and a large velocity gradient. When the jet passes through the first perforated layer 6, it is cut and split by a large number of small holes, transforming into multiple fine jets. After passing through the next perforated layer 6, it further diffuses and mixes, ultimately forming a uniform flow with parallel direction before reaching the baffle body 31. This avoids the imbalance where some baffle bodies 31 experience excessive impact while others receive almost no airflow. In other words, each baffle body 31 faces similar steam conditions, ensuring that all baffles operate at the optimal angle of attack, resulting in a more stable and reliable overall dehumidification efficiency.

[0068] In some embodiments, the dehumidification chamber 11 has a drain pipe 7, the first end of which is connected to and located inside the dehumidification chamber 11, and the purification chamber 12 has an exhaust pipe 8, the first end of which is connected to and located at the top of the purification chamber 12.

[0069] like Figures 1-4As shown, the first end of the drain pipe 7 communicates with the dehumidification chamber 11, and this end is located inside the dehumidification chamber 11. It is typically located at the bottom or near the lowest point of the dehumidification chamber 11 to ensure that condensate can naturally collect and flow out by gravity. The second end of the drain pipe 7 (not shown) can extend outward through the side wall or bottom of the tank 1 to connect to an external drainage system or condensate recovery pipe. A sealing structure is provided at the penetration point to prevent leakage. The drain pipe 7 is specifically designed to continuously or intermittently discharge the liquid water (condensate) separated and collected from the steam to the outside of the tank 1.

[0070] The first end of the exhaust pipe 8 is connected to the purification chamber 12, and this end is located at the top of the purification chamber 12. This means that the inlet of the exhaust pipe 8 is located at the highest point of the purification chamber 12, away from the bottom where liquid water may accumulate. The second end of the exhaust pipe 8 extends outward through the top or upper side wall of the tank 1, connecting to downstream steam-using equipment (such as steam turbines or heating networks). The exhaust pipe 8 is specifically used to exhaust the dried and clean steam after dehumidification and purification treatment from the tank 1 and transport it to subsequent processes.

[0071] Understandably, the inlet of the exhaust pipe 8 is located at the top of the purification chamber 12, away from areas where liquid water may accumulate. Even if there is a small amount of undischarged condensate or droplets from the filter layer at the bottom of the purification chamber 12, the steam can still be discharged purely from a high position, fundamentally preventing the separated droplets from being carried away by the steam flow and ensuring the dryness of the output steam.

[0072] The drain pipe 7 is located at the bottom of the dehumidification chamber 11. Gravity allows accumulated condensate to flow into the pipe and drain out automatically, requiring no additional power. This continuous and automatic drainage prevents the liquid level from becoming too high and submerging the baffle or filter layer 2. If there is excessive condensate in the dehumidification chamber 11, improper placement or blockage of the drain pipe 7 could cause condensate to accumulate and submerge the perforated layer 6 or the baffle component 3, impairing their separation function. Placing the drain pipe 7 at the bottom and ensuring it remains unobstructed ensures that the liquid level is always below the perforated layer 6 and the baffle, maintaining normal separation conditions.

[0073] 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," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to 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.

[0074] 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 at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0075] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0076] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0077] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0078] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A power plant turbine exhaust steam dehumidification and purification device, characterized in that, include: The tank has a cavity, which is divided into a dehumidification cavity and a purification cavity. The purification cavity is located above the dehumidification cavity. The tank has a steam inlet and a steam outlet. The steam inlet is connected to the dehumidification cavity, and the steam outlet is connected to the purification cavity. A filter layer is disposed within the cavity to divide the cavity into a dehumidification chamber and a purification chamber; A buffer assembly is disposed within the dehumidification chamber. The buffer assembly includes a baffle component and a buffer component. The buffer component includes a fixed seat, a sliding rod, and a first elastic element. The fixed seat is fixedly disposed on the bottom wall of the dehumidification chamber. The first end of the sliding rod is connected to the fixed seat and is movable along the height direction of the tank. The first elastic element is disposed between the first end of the sliding rod and the fixed seat. The baffle component includes a baffle body, which is connected to the second end of the slide rod. There are multiple baffle bodies, which are arranged at intervals along the circumference of the slide rod. The steam mixture discharged from the power plant turbine enters the dehumidification chamber through the steam inlet and impacts the baffle body. The baffle body is used to counteract the impact force generated by the steam mixture under the elastic action of the first elastic element.

2. The power plant turbine exhaust dehumidification and purification device according to claim 1, characterized in that, The buffer assembly further includes a second elastic element, which is sleeved on the outer periphery of the slide rod. The first end of the second elastic element abuts against the fixed seat, and the second end of the second elastic element abuts against the baffle component.

3. The power plant turbine exhaust dehumidification and purification device according to claim 2, characterized in that, The baffle component further includes a limiting ring, which is connected to the second end of the second elastic member. In the height direction of the tank, the limiting ring is located between the second end of the second elastic member and the baffle body.

4. The power plant turbine exhaust dehumidification and purification device according to claim 3, characterized in that, The baffle component further includes a first buffer pad, which is disposed on the side of the limiting ring adjacent to the baffle body, and at least a portion of the first buffer pad abuts against the baffle body.

5. The power plant turbine exhaust dehumidification and purification device according to claim 1, characterized in that, The baffle component further includes a mounting plate, which has mounting grooves located at the edge of the mounting plate. There are multiple mounting grooves, each corresponding to a baffle body. Each baffle body has mounting protrusions that are rotatably fitted into the mounting grooves around a first axis, which is orthogonal to the axis of the tank.

6. The power plant turbine exhaust dehumidification and purification device according to claim 5, characterized in that, The baffle component also includes a guide plate, which is connected to and located above the mounting plate. In a plane orthogonal to the height direction of the tank, the projected area of ​​the guide plate is larger than the projected area of ​​the mounting plate.

7. The power plant turbine exhaust dehumidification and purification device according to claim 6, characterized in that, The baffle component further includes a second buffer pad, which is disposed between the guide plate and the mounting plate. There are multiple second buffer pads, and each of the multiple second buffer pads is arranged in a one-to-one correspondence with a multiple baffle body.

8. The power plant turbine exhaust dehumidification and purification device according to claim 1, characterized in that, It also includes a steam inlet pipe, the first end of which is located in the dehumidification chamber and adjacent to the baffle body, and the second end of which extends through the filter layer and the side wall of the purification chamber toward the outside of the tank.

9. The power plant turbine exhaust dehumidification and purification device according to claim 8, characterized in that, It also includes a perforated layer, which is disposed in the dehumidification chamber and located between the baffle body and the steam inlet pipe. There are multiple perforated layers, which are arranged at intervals along the height direction of the tank.

10. The power plant turbine exhaust dehumidification and purification device according to claim 1, characterized in that, The dehumidification chamber has a drain pipe, the first end of which is connected to and located inside the dehumidification chamber. The purification chamber has a steam exhaust pipe, the first end of which is connected to and located at the top of the purification chamber.

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