A staged purification device for waste heat recovery of a gas turbine

Abstract

The utility model relates to exhaust treatment technical field, concretely relates to a kind of staged purification device of gas turbine exhaust waste heat recovery, including waste heat recovery tank;Drive assembly, drive assembly is installed in the side of filter plate, and drive assembly is used to provide power;Remove component, remove component is installed in the side of drive assembly, and remove component is used to remove dirt on scraping component.Compared with prior art, the present application is through the innovative design waste gas kinetic energy driven vortex formation mechanism and dynamic linkage self-cleaning filter system, systematically solves the core problems, such as traditional gas turbine exhaust treatment device filter plate easy to block, purification efficiency decay fast, rely on external power source energy consumption high, artificial cleaning cost big and long-period operation stability poor, realizes waste heat recovery and purification synergistic effect, operation and maintenance cost significantly reduced and the overall improvement of automation level.

Description

Technical Field

[0001] This utility model relates to the field of waste gas treatment technology, and in particular to a graded purification device for recovering waste heat from gas turbine exhaust. Background Technology

[0002] With increasingly stringent requirements for energy efficiency and stricter environmental regulations, gas turbines, as important power equipment, are widely used in power generation, petrochemicals, and shipping. However, during the operation of gas turbines, the high-temperature exhaust gases emitted not only contain a large amount of recoverable waste heat resources, but also carry particulate matter, oil mist, and harmful gas components. Direct emission without treatment not only wastes energy but also pollutes the environment. Therefore, waste heat recovery and staged purification treatment technologies for gas turbine exhaust gases have gradually become a focus of industry attention.

[0003] During the operation of power equipment such as gas turbines and internal combustion engines, exhaust emissions not only carry a large amount of unused heat energy but also contain pollutants such as particulate matter, oil, and acidic gases. Traditional exhaust gas treatment devices typically employ a single filtration or spraying method, which has significant technical bottlenecks: existing devices mostly use static tank structures, where exhaust gas easily forms stagnant or dead zones within the tank. Due to the single flow path and uneven velocity distribution, pollutants tend to accumulate locally, leading to decreased purification efficiency. Simultaneously, the stagnant zones prolong the exhaust gas residence time, increasing the risk of filter media blockage. Traditional filter plates are mostly fixed installations, allowing dust and oil from the exhaust gas to directly adhere to the surface, causing pore blockage, increased airflow resistance, and a significant decrease in filtration efficiency over operating time. This necessitates frequent shutdowns for replacement or manual cleaning, resulting in high maintenance costs and impacting system continuity. Manual cleaning, on the other hand, is labor-intensive and ineffective. Consistency is difficult to guarantee; in addition, existing waste heat recovery devices and purification systems are mostly designed independently, and the waste gas needs to be reversed or pressurized multiple times in the waste heat recovery and purification process, resulting in increased energy loss. Moreover, the static structure cannot utilize the kinetic energy of the waste gas, and additional fans or pumps are required to drive the airflow, further increasing energy consumption and equipment complexity. Traditional devices rely on external power sources (such as motors) to drive the airflow or cleaning components, which has problems such as difficulty in power matching and high failure rate. Especially in high temperature, high humidity or corrosive waste gas environments, components such as motors are easily damaged, leading to a decrease in system reliability. At the same time, the lack of a real-time dynamic cleaning mechanism and the short life of filter components seriously restrict the long-term stable operation of the device. Utility Model Content

[0004] In view of this, the purpose of this utility model is to propose a graded purification device for waste heat recovery from gas turbine exhaust gas, so as to solve the problem that the filter plates in traditional gas turbine exhaust gas treatment devices are prone to clogging and require frequent manual cleaning.

[0005] Based on the above objectives, this utility model provides a graded purification device for recovering waste heat from gas turbine exhaust gas, comprising: a waste heat recovery tank, a support base fixedly installed on one side of the waste heat recovery tank, a purification tank installed on the other side of the waste heat recovery tank, a recovery port installed on one side of the waste heat recovery tank, a plurality of filter plates installed inside the waste heat recovery tank, and an air inlet installed between the waste heat recovery tank and the purification tank.

[0006] A drive assembly, which is mounted on one side of the filter plate, is used to provide power;

[0007] A cleaning component is mounted on one side of the drive component and is used to remove dirt from the scraping component.

[0008] Preferably, the drive assembly includes a first drive plate rotatably mounted inside the waste heat recovery tank, a second drive plate mounted on the side of the first drive plate near the filter plate, a plurality of power plates fixedly mounted on the side of the first drive plate near the second drive plate, and the side of the power plates away from the first drive plate mounted on the side of the second drive plate.

[0009] Preferably, an inlet is fixedly installed in the middle of the first drive board.

[0010] Preferably, the power plate is arranged in an arc shape, and a plurality of the power plates are arranged in a clustered manner.

[0011] Preferably, the cleaning assembly includes a plurality of first scrapers mounted on one side of the second drive plate, the side of the plurality of first scrapers away from the second drive plate abutting against the filter plate, and a second scraper mounted on the side of each of the first scrapers away from the second drive plate, the side of the second scraper near the filter plate abutting against the filter plate.

[0012] Preferably, a connecting sleeve is fixedly installed in the middle of the second drive plate, and the connecting sleeve has a plurality of slots. A connecting plate is fixedly installed on the side of the first scraper near the connecting sleeve, and the connecting plate engages with the slots.

[0013] Preferably, a connecting column is installed on one side of several connecting plates, and several sliding grooves are formed on the outer circumference of the connecting column. A sliding plate is fixedly installed on the side of the second scraper near the connecting column, and the sliding plate is slidably installed in the sliding groove.

[0014] Preferably, a locking hole is provided at one end of the second scraper near the connecting post, and a lock head is engaged in each locking hole. A buckle plate is fixedly installed on the side of several lock heads away from the second scraper.

[0015] Preferably, a locking plate is installed on the side of the second scraper away from the connecting post, and the other end of the locking plate is connected to one side of the first scraper.

[0016] Preferably, the second drive plate has a plurality of ventilation grooves, and the ventilation grooves correspond one-to-one with the first scraper.

[0017] The beneficial effects of this utility model are:

[0018] 1. This staged purification device for recovering waste heat from gas turbine exhaust gas includes a drive assembly. When exhaust gas enters the inlet located in the middle of the first drive plate, it flows along the surface of several arc-shaped, converging power plates. During this flow, the exhaust gas flow direction is tangential to the arc-shaped surface of the power plates, generating thrust. The kinetic energy of the exhaust gas itself drives the first drive plate and the second drive plate mounted on it to rotate synchronously, thereby driving the entire drive assembly to rotate continuously and stably. Through the rotation of the drive assembly, vortices or forced flow can be formed inside the purification tank, breaking the flow of exhaust gas within the tank. The potential formation of stagnant or dead zones within the tank significantly increases the overall flow velocity of the exhaust gas, effectively reducing its residence time and preventing localized pollutant deposition due to stagnation. Simultaneously, it promotes rapid passage and uniform distribution of the exhaust gas within the internal space, enhancing the overall purification effect. Furthermore, since the drive components rely entirely on the flow of the exhaust gas itself for rotation, no external power source such as a motor is required, significantly reducing energy consumption and maintenance costs. The overall structure is simpler, and operation is more efficient and reliable, further enhancing the device's application value under actual working conditions.

[0019] 2. This type of staged purification device for recovering waste heat from gas turbine exhaust gas includes a cleaning component. When the cleaning component receives rotational power from the drive component, several first scrapers mounted on one side of the second drive plate and several second scrapers fixedly connected to the first scrapers rotate synchronously. The scraping surfaces of both the first and second scrapers are in close contact with the surface of the filter plate. During rotation, the surface of the filter plate can be continuously and uniformly scraped and cleaned. During the drive process, the cleaning component can effectively remove dust, oil, particulate impurities, and other contaminants adhering to the surface of the filter plate in real time, preventing impurities from clogging the filter plate pores, increasing airflow resistance, or reducing filtration efficiency due to surface contamination. The low-level phenomenon, through real-time and dynamic cleaning of the cleaning components, can continuously maintain the permeability and good working condition of the filter plate, ensuring smooth flow of exhaust gas and stable purification effect when passing through the filter plate. At the same time, it significantly extends the service life of the filter plate and reduces the need for frequent replacement or maintenance due to clogging or performance degradation. In addition, the cleaning components rely on the power of the drive components themselves to achieve automatic operation, without the need for an additional independent cleaning power system, which greatly reduces the frequency and labor intensity of manual cleaning, improves the automation level and reliability of the overall operation of the device, further improves the continuity and convenience of the exhaust gas treatment system, and enhances the application adaptability and economy of the device under long-term stable operation conditions. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 2 This is a three-dimensional structural diagram of the purification tank of this utility model;

[0023] Figure 3 This is a schematic diagram of the internal structure of the purification tank of this utility model;

[0024] Figure 4 This is a second-view schematic diagram of the disassembled structure of the driving component and the clearing component of this utility model;

[0025] Figure 5 This is a second-view schematic diagram of the disassembled structure of the driving component and the clearing component of this utility model;

[0026] Figure 6 This utility model Figure 5 Enlarged structural diagram at point A in the middle;

[0027] Figure 7 This is a schematic diagram of the disassembled structure of the cleaning component of this utility model;

[0028] Figure 8 This is a schematic diagram of the disassembled structure of the connecting column and the second scraper of this utility model.

[0029] The diagram is marked as follows:

[0030] 1. Waste heat recovery tank; 2. Recovery port; 3. Purification tank; 4. Support base; 5. Air inlet; 6. Filter plate; 7. First drive plate; 8. Second drive plate; 9. First scraper; 10. Second scraper; 11. Power plate; 12. Inlet; 13. Ventilation groove; 14. Buckle plate; 15. Lock head; 16. Connecting plate; 17. Locking plate; 18. Lock hole; 19. Connecting column; 20. Slide groove; 21. Slide plate; 22. Connecting sleeve; 23. Slot. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments.

[0032] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0033] like Figures 1 to 8 As shown, the staged purification device for waste heat recovery from gas turbine exhaust includes: a waste heat recovery tank 1, a support base 4 fixedly installed on one side of the waste heat recovery tank 1, a purification tank 3 installed on the other side of the waste heat recovery tank 1, a recovery port 2 installed on one side of the waste heat recovery tank 1, several filter plates 6 installed inside the waste heat recovery tank 1, and an air inlet 5 installed between the waste heat recovery tank 1 and the purification tank 3; a drive assembly, which is installed on one side of the filter plates 6 and is used to provide power; and a cleaning assembly, which is installed on one side of the drive assembly and is used to remove dirt from the scraping assembly.

[0034] In the operation of this device, high-temperature gas turbine exhaust gas is first introduced into waste heat recovery tank 1. Inside the tank, the exhaust gas undergoes preliminary treatment, releasing a large amount of heat energy. This waste heat is effectively recovered through recovery port 2, enabling energy reuse. After preliminary cooling and energy recovery, the exhaust gas enters purification tank 3 through inlet 5, located between waste heat recovery tank 1 and purification tank 3. Purification tank 3 is equipped with a further purification system to deeply treat harmful substances and residual particles in the exhaust gas, ensuring that the emitted gas meets environmental standards. As the exhaust gas continues to flow, the dynamics generated by the flow of the exhaust gas... The force drives the drive assembly installed on one side of the filter plate 6 to operate. During operation, the drive assembly drives the cleaning assembly to work synchronously. The cleaning assembly closely fits the surface of the filter plate 6 and removes the dirt and impurities attached to the filter plate 6 in a timely manner by mechanical scraping. This effectively prevents the filter plate 6 from being blocked, which would affect the smooth flow of air and the purification effect. Throughout the process, the coordinated cooperation between the drive assembly and the cleaning assembly not only improves the self-cleaning ability of the device and reduces the frequency of manual maintenance, but also ensures the continuous and efficient treatment of waste gas and the stability of waste heat recovery, thereby achieving the dual goals of waste gas purification and energy utilization.

[0035] like Figures 3 to 6 As shown, the drive assembly includes a first drive plate 7 rotatably installed inside the waste heat recovery tank 1, a second drive plate 8 installed on the side of the first drive plate 7 near the filter plate 6, a plurality of power plates 11 fixedly installed on the side of the first drive plate 7 near the second drive plate 8, and the side of the power plates 11 away from the first drive plate 7 installed on the side of the second drive plate 8; an inlet 12 is fixedly installed in the middle of the first drive plate 7; the power plates 11 are arranged in an arc shape, and the plurality of power plates 11 are arranged in a clustered manner;

[0036] During the operation of the drive assembly, the high-temperature exhaust gas from the gas turbine first enters the device through the inlet 12 located in the middle of the first drive plate 7. After entering, the exhaust gas flows at high speed along the arc-shaped surface of the power plate 11. Since the power plates 11 are arranged in a clustered manner, they can effectively guide the exhaust gas flow to form a stable fluid impact force. This impact force acts on the power plate 11, causing it to rotate the first drive plate 7 under the action of fluid torque. As the first drive plate 7 rotates, the second drive plate 8, which is fixedly installed on one side of it, rotates synchronously, realizing the linkage of the entire drive assembly. The side of the power plate 11 away from the first drive plate 7 is fixedly connected to the second drive plate 8. Through this structural arrangement, the kinetic energy generated by the exhaust gas flow can be more efficiently transferred to all parts of the drive assembly, thereby ensuring the stability and continuous operation of the drive assembly under the condition of continuous flow of gas turbine exhaust gas. The rotation of the drive components creates a certain swirling airflow effect inside the device. Under the guidance of the power plate 11, the exhaust gas accelerates its flow. The arc-shaped and converging structure of the power plate 11 causes a venturi-like effect in the local area when the exhaust gas flows through, further promoting the overall flow velocity of the exhaust gas. The centrifugal guiding effect brought about by the rotation not only strengthens the forward momentum of the exhaust gas but also effectively reduces stagnation and local backflow during the flow process, thereby reducing the resistance loss of the gas channel. Through the positive coupling relationship between the drive components and the exhaust gas flow, this device can significantly improve the flow efficiency and throughput of the exhaust gas while completing power transmission and component rotation, ensuring that the exhaust gas passes through continuously and rapidly in the subsequent purification process, providing a strong guarantee for the entire waste heat recovery and graded purification process.

[0037] like Figure 4 , Figure 7 , Figure 8As shown, the cleaning assembly includes several first scrapers 9 mounted on one side of the second drive plate 8. The side of each first scraper 9 away from the second drive plate 8 abuts against the filter plate 6. Second scrapers 10 are mounted on the side of each first scraper 9 away from the second drive plate 8, and the side of each second scraper 10 near the filter plate 6 abuts against the filter plate 6. A connecting sleeve 22 is fixedly mounted in the middle of the second drive plate 8. Several slots 23 are provided on the connecting sleeve 22. A connecting plate 16 is fixedly mounted on the side of each first scraper 9 near the connecting sleeve 22, and the connecting plate 16 engages with the slots 23. A connecting post 19 is mounted on one side of each of the connecting plates 16. The outer circumference of the connecting post 19 is provided with several grooves 20. A sliding plate 21 is fixedly installed on the side of the second scraper 10 near the connecting post 19, and the sliding plate 21 is slidably installed in the groove 20. A locking hole 18 is provided on the end of the second scraper 10 near the connecting post 19. A lock head 15 is locked in the locking hole 18. A buckle plate 14 is fixedly installed on the side of the lock head 15 away from the second scraper 10. A locking plate 17 is installed on the side of the second scraper 10 away from the connecting post 19. The other end of the locking plate 17 is connected to one side of the first scraper 9. A number of ventilation grooves 13 are provided on the second drive plate 8, and the ventilation grooves 13 correspond one-to-one with the first scraper 9.

[0038] The cleaning component relies on the power transmission of the drive component during operation. As the drive component operates, several first scrapers 9 mounted on one side of the second drive plate 8 begin to rotate synchronously. One end of each first scraper 9 engages with the slot 23 of the second drive plate 8 via a connecting plate 16, ensuring the stability of the first scraper 9 during rotation and enabling it to withstand the rotational torque generated by the drive component. The side of each first scraper 9 away from the second drive plate 8 continuously abuts against the surface of the filter plate 6. As the scrapers rotate with the drive component, they scrape away the dirt from the surface of the filter plate 6. Meanwhile, the second scraper 10, installed on the first scraper 9, also abuts against the surface of the filter plate 6. The second scraper 10 is slidably installed in the slide groove 20 via a slide plate 21 fixed on the connecting post 19, allowing it to make slight adjustments during operation according to minor deformations or dirt accumulation on the surface of the filter plate 6, thereby enhancing its scraping adaptability and improving the cleaning effect. To ensure a stable connection between the second scraper 10 and the first scraper 9, a locking hole 18 is provided at the end of the second scraper 10 near the connecting post 19, and a lock head is engaged in the locking hole 18. 15. The second scraper 10 is further reinforced by the buckle plate 14. The other end of the second scraper 10 is connected to the first scraper 9 by the locking plate 17, forming a stable and adaptable composite cleaning structure. During the entire cleaning process, the first scraper 9 and the second scraper 10 effectively remove dirt, condensate or other impurities adhering to the surface of the filter plate 6 during the flow of exhaust gas by continuous contact and scraping of the surface of the filter plate 6, ensuring the cleanliness of the surface of the filter plate 6, thereby maintaining the air permeability and purification efficiency of the filter plate 6. Since the second drive plate 8 is provided with several air permeable grooves 13, which correspond one-to-one with the first scraper 9, the exhaust gas can flow smoothly through the air permeable grooves 13 when it flows through the cleaning component, avoiding significant obstruction of the exhaust gas channel during the rotation of the scraper, further improving the continuity of exhaust gas flow and the overall working stability of the device. Through the above structure and operation mode, this cleaning component can achieve automatic cleaning of the surface of the filter plate 6 by means of the power provided by the drive component without relying on external motors or manual intervention, effectively extending the service life of the filter plate 6 and ensuring the long-term and efficient operation of the waste heat recovery and purification functions.

[0039] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.

[0040] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A staged purification device for recovering waste heat from gas turbine exhaust gas, characterized in that, include: Waste heat recovery tank (1), a support base (4) is fixedly installed on one side of the waste heat recovery tank (1), a purification tank (3) is installed on the other side of the waste heat recovery tank (1), a recovery port (2) is installed on one side of the waste heat recovery tank (1), a number of filter plates (6) are installed inside the waste heat recovery tank (1), and an air inlet (5) is installed between the waste heat recovery tank (1) and the purification tank (3); A drive assembly is mounted on one side of the filter plate (6) and is used to provide power; A cleaning component is mounted on one side of the drive component and is used to remove dirt from the scraping component.

2. The staged purification device for waste heat recovery from gas turbine exhaust gas according to claim 1, characterized in that, The drive assembly includes a first drive plate (7) rotatably installed inside the waste heat recovery tank (1), a second drive plate (8) is installed on the side of the first drive plate (7) near the filter plate (6), a plurality of power plates (11) are fixedly installed on the side of the first drive plate (7) near the second drive plate (8), and the side of the power plate (11) away from the first drive plate (7) is installed on the side of the second drive plate (8).

3. The staged purification device for waste heat recovery from gas turbine exhaust gas according to claim 2, characterized in that, An inlet (12) is fixedly installed in the middle of the first drive board (7).

4. The staged purification device for waste heat recovery from gas turbine exhaust gas according to claim 2, characterized in that, The power plate (11) is arranged in an arc shape, and several of the power plates (11) are arranged in a clustered manner.

5. The staged purification device for waste heat recovery from gas turbine exhaust gas according to claim 2, characterized in that, The cleaning assembly includes a plurality of first scrapers (9) mounted on one side of the second drive plate (8), the side of the plurality of first scrapers (9) away from the second drive plate (8) abutting against the filter plate (6), and a second scraper (10) mounted on the side of the first scrapers (9) away from the second drive plate (8), the side of the second scraper (10) near the filter plate (6) abutting against the filter plate (6).

6. The staged purification device for waste heat recovery from gas turbine exhaust gas according to claim 5, characterized in that, A connecting sleeve (22) is fixedly installed in the middle of the second drive plate (8). The connecting sleeve (22) has several slots (23). A connecting plate (16) is fixedly installed on the side of the first scraper (9) near the connecting sleeve (22). The connecting plate (16) engages with the slots (23).

7. The staged purification device for waste heat recovery from gas turbine exhaust gas according to claim 6, characterized in that, A connecting post (19) is installed on one side of several connecting plates (16). Several grooves (20) are provided on the outer circumference of the connecting post (19). A sliding plate (21) is fixedly installed on the side of the second scraper (10) near the connecting post (19). The sliding plate (21) is slidably installed in the groove (20).

8. The staged purification device for waste heat recovery from gas turbine exhaust gas according to claim 7, characterized in that, The second scraper (10) has a lock hole (18) at one end near the connecting post (19), and a lock head (15) is engaged in the lock hole (18). A buckle plate (14) is fixedly installed on the side of the lock head (15) away from the second scraper (10).

9. The staged purification device for waste heat recovery from gas turbine exhaust gas according to claim 8, characterized in that, A locking plate (17) is installed on the side of the second scraper (10) away from the connecting post (19), and the other end of the locking plate (17) is connected to one side of the first scraper (9).

10. The staged purification device for waste heat recovery from gas turbine exhaust gas according to claim 6, characterized in that, The second drive plate (8) has several ventilation grooves (13), and the ventilation grooves (13) correspond one-to-one with the first scraper (9).

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