A high-efficiency energy recycling device of a combustion engine heat power system
By installing a blocking component and a rotating baffle cylinder at the boiler flue gas outlet, the problem of heat exchange efficiency degradation and increased operation and maintenance costs caused by particulate matter intrusion in the boiler energy recovery device is solved, achieving efficient energy recovery and low-cost operation and maintenance.
Patent Information
- Application Number
- CN202520924352.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-12
- Publication Date
- 2026-06-16
- Estimated Expiration
- 2035-05-12
AI Technical Summary
Existing boiler energy recovery devices suffer from reduced heat exchange efficiency and increased operation and maintenance costs due to particulate matter intrusion.
Design a high-efficiency energy recovery and utilization device that includes a barrier component. Utilize a tapered nozzle and a rotating barrier cylinder to form a gradient filtration system, combined with a fan-driven rotating cleaning mechanism, to achieve self-driven cleaning and directional collection of particulate matter.
It effectively avoids particulate matter contamination of heat exchangers, maintains stable heat transfer efficiency, reduces equipment wear and maintenance frequency, improves energy recovery quality, and reduces operation and maintenance costs.
Smart Images
Figure CN224365425U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of energy recovery equipment technology, and in particular to a high-efficiency energy recovery and utilization device for a gas turbine thermoelectric system. Background Technology
[0002] A thermal power plant system, also known as a thermal power generation system, is a highly efficient energy conversion device widely used in thermal power generation, nuclear power generation, and geothermal power generation. The system mainly consists of four parts: a boiler, a steam turbine, a generator, and a condenser. The boiler is responsible for burning fuel to heat water and generate high-pressure steam. The steam turbine converts the thermal energy of the steam into mechanical energy, which drives the generator to rotate and generate electricity. The condenser recovers the condensate from the exhaust steam, realizing water circulation. In a thermal power plant system, energy recovery is a crucial link, and its necessity is mainly reflected in three aspects: improving energy utilization efficiency, promoting environmental protection, and optimizing economic benefits.
[0003] A boiler is a device that heats water and converts it into steam or hot water by burning fuel (such as coal, natural gas, oil, etc.) or other heat sources. During the operation of a boiler, the flue gas generated by fuel combustion carries a large amount of heat energy and is emitted into the atmosphere, causing energy waste and environmental pollution. In order to recover this part of the heat energy, existing energy recovery devices guide the flue gas to other equipment (such as waste heat boilers, heat exchangers, etc.) to complete the recovery and reuse of energy.
[0004] During boiler operation, impurities carried by the fuel or incomplete combustion will generate particulate matter emissions. At the same time, long-term operation of the equipment will accumulate ash and particulate matter. However, existing boiler energy recovery devices generally lack particulate matter interception designs for flue gas. When the flue gas is guided into the waste heat utilization equipment, particulate matter will invade the system. When the particulate matter concentration increases, it will cause heat exchanger contamination, form a heat insulation layer that hinders heat conduction, and may also block fluid channels or wear down equipment parts. This dual effect leads to a decrease in heat conversion efficiency, and the actual output energy efficiency of the waste heat utilization equipment will therefore decrease. Unfiltered flue gas directly participates in the heat exchange process, which not only reduces the quality of energy recovery, but also increases the frequency of equipment maintenance, forming a vicious cycle between energy utilization and operation and maintenance costs.
[0005] Furthermore, we disclose a high-efficiency energy recovery and utilization device for a gas turbine cogeneration system to solve the problems of heat exchange efficiency degradation and increased operation and maintenance costs caused by particulate matter intrusion in existing boiler energy recovery devices. Utility Model Content
[0006] In view of this, the purpose of this utility model is to propose a high-efficiency energy recovery and utilization device for gas turbine thermoelectric systems, so as to solve the problems of heat exchange efficiency reduction and operation and maintenance cost increase caused by particulate matter intrusion in existing boiler energy recovery devices.
[0007] To achieve the above objectives, this utility model provides a high-efficiency energy recovery and utilization device for a gas turbine cogeneration system, including an installation pipe installed at the boiler flue gas outlet. A blocking component is installed at the upper end of the installation pipe. The blocking component is used to block particulate matter in the flue gas. The blocking component includes a cleaning cylinder, and a barrier cylinder is provided inside the cleaning cylinder. The blocking component includes a cleaning module and a collection module. The cleaning module is used to clean the particulate matter remaining on the surface of the barrier cylinder, and the collection module is used to store the particulate matter cleaned by the cleaning module.
[0008] Preferably, one end of the cleaning cylinder is fixedly connected to an air inlet pipe, the other end of the cleaning cylinder away from the air inlet pipe is fixedly connected to an exhaust pipe, and the upper end of the mounting pipe is connected to the air inlet pipe via a flange.
[0009] Preferably, the barrier cylinder is rotatably connected inside the cleaning cylinder on one side of the exhaust pipe. The surface of the barrier cylinder is provided with a plurality of evenly spaced leakage holes. A retaining shaft is fixedly connected to the end face of the barrier cylinder near the exhaust pipe. The barrier cylinder is rotatably connected to the cleaning cylinder through the retaining shaft.
[0010] Preferably, the cleaning module includes a rotating rod fixedly connected to the middle of the barrier cylinder. One end of the rotating rod near the air inlet pipe passes through the barrier cylinder and is fixedly connected to a fan. When the flue gas enters from the air inlet pipe and blows the fan to rotate, the barrier cylinder will rotate synchronously.
[0011] Preferably, the outer wall of the rotating rod is rotatably connected to a first bracket on one side of the fan, the outside of the first bracket is fixedly connected to the cleaning cylinder, and the end of the rotating rod near the exhaust pipe is rotatably connected to a second bracket, the outside of the second bracket is fixedly connected to the exhaust pipe.
[0012] Preferably, the outer corners of the first and second supports are rounded so that when the flue gas enters from the inlet pipe and is discharged from the exhaust pipe, the first and second supports will not obstruct the flow of the flue gas.
[0013] Preferably, the collection module includes a slag discharge box fixedly connected to the lower end of the cleaning cylinder. The lower end of the cleaning cylinder has a rectangular groove, and the interior of the cleaning cylinder is connected to the slag discharge box through the rectangular groove. A scraper is provided in the middle of the lower end of the barrier cylinder, and a sliding plate is slidably connected to the lower end of the middle of the slag discharge box.
[0014] Preferably, one end of the scraper is fixedly connected to the cleaning cylinder, and the upper end of the scraper is in contact with the barrier cylinder.
[0015] Preferably, the inner wall of the cleaning cylinder is fixedly connected with multiple guide ring plates at even intervals. The multiple guide ring plates are all inclined, and the multiple guide ring plates gradually increase in size from the air inlet pipe to the exhaust pipe.
[0016] Preferably, the lower end of the mounting tube is tapered.
[0017] The beneficial effects of this utility model are:
[0018] 1. This energy recovery and utilization device forms a gradient filtration system with a conical nozzle and a rotating baffle cylinder. Large particles of impurities initially settle under the Venturi effect, while fine particles are intercepted by the precision perforations on the surface of the baffle cylinder. This fundamentally prevents unfiltered flue gas from directly entering the waste heat utilization equipment. This design directly cuts off the contamination path of particulate matter to the heat exchanger, eliminates the insulation layer formed by particle adhesion, ensures stable heat transfer efficiency, and reduces the risk of fluid channel blockage and equipment wear. This allows the heat conversion efficiency of the waste heat utilization equipment to be maintained at the optimal design state, significantly improves the quality of energy recovery and reduces the frequency of equipment maintenance, effectively breaking the vicious cycle between energy utilization and operation and maintenance costs.
[0019] 2. This energy recovery and utilization device uses flue gas flow to drive the fan to rotate, which in turn drives the baffle cylinder to rotate via a rotating rod. It utilizes the kinetic energy of the flue gas itself to achieve real-time cleaning, completely eliminating the additional energy consumption required by traditional cleaning methods. The precise cooperation between the scraper and the baffle cylinder continuously strips off attached particles during rotation. Combined with the principle of gravity settling, the particles fall directionally into the slag discharge box through the rectangular trough. The slide plate design not only achieves sealed storage of ash and slag, but also allows for flexible adjustment of the ash removal cycle through a controllable emission mechanism. This perfect synergy between self-driven cleaning and intelligent collection ensures the continuous and efficient operation of the particulate matter blocking system while significantly reducing the need for manual intervention and system maintenance costs, embodying a green and low-carbon design concept. 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 schematic diagram of the internal three-dimensional structure of the cleaning cylinder of this utility model;
[0023] Figure 3 for Figure 2 Enlarged view of point A in the middle;
[0024] Figure 4 This is a schematic diagram of the three-dimensional structure of the barrier cylinder of this utility model.
[0025] The diagram is marked as follows:
[0026] 1. Installation pipe; 2. Cleaning cylinder; 3. Slag discharge box; 4. Air inlet pipe; 5. Fan; 6. First bracket; 7. Guide ring plate; 8. Barrier cylinder; 9. Rotating rod; 10. Second bracket; 11. Exhaust pipe; 12. Slide plate; 13. Rectangular groove; 14. Leakage hole; 15. Shaft retainer; 16. Scraper. Detailed Implementation
[0027] 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.
[0028] 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.
[0029] like Figures 1 to 4 As shown, a high-efficiency energy recovery and utilization device for a gas turbine cogeneration system includes an installation pipe 1 installed at the boiler flue gas outlet. A blocking assembly is installed at the upper end of the installation pipe 1 to block particulate matter in the flue gas. The blocking assembly includes a cleaning cylinder 2, inside which a barrier cylinder 8 is installed. The blocking assembly includes a cleaning module and a collection module. The cleaning module cleans the particulate matter remaining on the surface of the barrier cylinder 8, and the collection module stores the particulate matter cleaned by the cleaning module. Multiple guide ring plates 7 are evenly spaced and fixedly connected to the inner wall of the cleaning cylinder 2. The multiple guide ring plates 7 are all... The tube is inclined and multiple guide ring plates 7 gradually increase in size from the intake pipe 4 to the exhaust pipe 11. The lower end of the mounting pipe 1 is tapered. One end of the cleaning cylinder 2 is fixedly connected to the intake pipe 4, and the end of the cleaning cylinder 2 away from the intake pipe 4 is fixedly connected to the exhaust pipe 11. The upper end of the mounting pipe 1 is connected to the intake pipe 4 through a flange. The barrier cylinder 8 is rotatably connected inside the cleaning cylinder 2 on one side of the exhaust pipe 11. Multiple leakage holes 14 are evenly spaced on the surface of the barrier cylinder 8. A retaining shaft 15 is fixedly connected to the end face of the barrier cylinder 8 near the exhaust pipe 11. The barrier cylinder 8 is rotatably connected to the cleaning cylinder 2 through the retaining shaft 15.
[0030] When flue gas containing particulate matter is discharged from the boiler, it first passes through the conical design at the lower end of the installation pipe 1, utilizing the Venturi effect to increase the flue gas velocity. Some large particles initially settle due to inertia. Subsequently, the flue gas enters the cleaning cylinder 2 through the inlet pipe 4. Its core component, the barrier cylinder 8, rotates slowly around the pivot 15. The evenly distributed perforations 14 on the surface of the barrier cylinder 8 achieve a balance between flue gas discharge and particulate matter blocking—the orifice design ensures smooth passage of flue gas, while the orifice walls physically intercept particulate matter. During the rotation of the barrier cylinder 8, the cleaning module works synchronously, promptly... The particles adhering to the outer surface of the barrier cylinder 8 are removed to prevent blockage. Under the action of gravity, the removed particles slide down along multiple guide ring plates 7 installed at an inclined angle on the inner wall of the cleaning cylinder 2. These guide ring plates 7 not only make the flue gas swirl and enhance the centrifugal separation effect, but their gradually increasing annular spacing from the inlet pipe 4 to the exhaust pipe 11 also forms a guiding structure similar to a "particle slide" to ensure the directional collection of particles. Finally, the particles fall into the collection module to achieve gas-solid separation. The purified flue gas then enters the subsequent energy recovery device through the exhaust pipe 11.
[0031] Furthermore, such as Figures 1 to 2 , Figure 4 As shown, the cleaning module includes a rotating rod 9 fixedly connected to the middle of the baffle cylinder 8. One end of the rotating rod 9 near the air inlet pipe 4 passes through the baffle cylinder 8 and is fixedly connected to a fan 5. When flue gas enters from the air inlet pipe 4 and blows the fan 5, the baffle cylinder 8 rotates synchronously. A first bracket 6 is rotatably connected to the outer wall of the rotating rod 9 on one side of the fan 5. The outside of the first bracket 6 is fixedly connected to the cleaning cylinder 2. A second bracket 10 is rotatably connected to the end of the rotating rod 9 near the exhaust pipe 11. The outside of the second bracket 10 is fixedly connected to the exhaust pipe 11. The first bracket 6 and the second bracket 10... The outer wall corners are all rounded. When the flue gas enters from the inlet pipe 4 and is discharged from the exhaust pipe 11, the first support 6 and the second support 10 will not obstruct the flow of the flue gas. The collection module includes a slag discharge box 3 fixedly connected to the lower end of the cleaning cylinder 2. A rectangular groove 13 is opened at the lower end of the cleaning cylinder 2. The interior of the cleaning cylinder 2 is connected to the slag discharge box 3 through the rectangular groove 13. A scraper 16 is provided in the middle of the lower end of the barrier cylinder 8. A sliding plate 12 is slidably connected to the lower end of the middle of the slag discharge box 3. One end of the scraper 16 is fixedly connected to the cleaning cylinder 2, and the upper end of the scraper 16 is in contact with the barrier cylinder 8.
[0032] When flue gas enters from the inlet pipe 4, it first impacts the blades of the fan 5, driving the fan 5 to rotate the rotating rod 9. The middle of the rotating rod 9 is fixed to the baffle cylinder 8, forming a linkage mechanism of "flue gas drive - rotating rod 9 transmission - baffle cylinder 8 rotation". The densely distributed perforations 14 on the surface of the baffle cylinder 8 continuously filter the flue gas during rotation. The two ends of the rotating rod 9 are radially positioned by the first bracket 6 and the second bracket 10 with rounded corners, respectively, which ensures the stable rotation of the baffle cylinder 8 and avoids disturbing the mainstream flue gas. During the rotation of the baffle cylinder 8, the scraper 16 at its lower end moves in a circular motion. The scraper 16 is in close contact with the outer wall of the baffle cylinder 8, effectively peeling off the particles attached to the surface. Under the influence of gravity, the falling particles fall directly into the slag discharge box 3, which is connected to the rectangular groove 13 at the lower end of the cleaning cylinder 2. The sliding plate 12 in the middle of the slag discharge box 3 adopts a sliding design, which can serve as a temporary container for particle collection and can also facilitate the discharge of ash and slag through periodic opening and closing. The entire system realizes a fully automatic cycle from "flue gas kinetic energy driven cleaning - mechanical stripping of particles - gravity settling collection". The cleaning module achieves real-time cleaning with zero external energy consumption through flue gas self-drive, while the collection module completes the directional collection and controllable discharge of particles through the cooperation of the scraper 16 and the sliding plate 12. The synergistic effect of the two ensures the efficient and continuous operation of the particle blocking system.
[0033] 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.
[0034] 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 high-efficiency energy recovery and utilization device for a gas turbine cogeneration system, characterized in that: The system includes an installation pipe (1) installed at the boiler exhaust port. A blocking component is installed at the upper end of the installation pipe (1). The blocking component is used to block particulate matter in the flue gas. The blocking component includes a cleaning cylinder (2). A barrier cylinder (8) is provided inside the cleaning cylinder (2). The blocking component includes a cleaning module and a collection module. The cleaning module is used to clean the particulate matter remaining on the surface of the barrier cylinder (8). The collection module is used to store the particulate matter cleaned by the cleaning module.
2. The high-efficiency energy recovery and utilization device for a gas turbine cogeneration system according to claim 1, characterized in that: One end of the cleaning cylinder (2) is fixedly connected to the air inlet pipe (4), and the other end of the cleaning cylinder (2) away from the air inlet pipe (4) is fixedly connected to the exhaust pipe (11). The upper end of the mounting pipe (1) is connected to the air inlet pipe (4) through a flange.
3. The high-efficiency energy recovery and utilization device for a gas turbine cogeneration system according to claim 1, characterized in that: The barrier cylinder (8) is rotatably connected inside the cleaning cylinder (2) on one side of the exhaust pipe (11). The surface of the barrier cylinder (8) is evenly spaced with a plurality of leakage holes (14). A retaining pin (15) is fixedly connected to the end face of the barrier cylinder (8) near the exhaust pipe (11). The barrier cylinder (8) is rotatably connected to the cleaning cylinder (2) through the retaining pin (15).
4. The high-efficiency energy recovery and utilization device for a gas turbine cogeneration system according to claim 1, characterized in that: The cleaning module includes a rotating rod (9) fixedly connected to the middle of the barrier cylinder (8). The end of the rotating rod (9) near the air inlet pipe (4) passes through the barrier cylinder (8) and is fixedly connected to a fan (5). When the flue gas enters from the air inlet pipe (4) and blows the fan (5) to rotate, the barrier cylinder (8) will rotate synchronously.
5. The high-efficiency energy recovery and utilization device for a gas turbine cogeneration system according to claim 4, characterized in that: The outer wall of the rotating rod (9) is connected to a first bracket (6) on one side of the fan (5). The outside of the first bracket (6) is fixedly connected to the cleaning cylinder (2). The end of the rotating rod (9) near the exhaust pipe (11) is connected to a second bracket (10). The outside of the second bracket (10) is fixedly connected to the exhaust pipe (11).
6. The high-efficiency energy recovery and utilization device for a gas turbine cogeneration system according to claim 5, characterized in that: The outer corners of the first bracket (6) and the second bracket (10) are rounded. When the flue gas enters from the inlet pipe (4) and is discharged from the exhaust pipe (11), the first bracket (6) and the second bracket (10) will not obstruct the flow of the flue gas.
7. The high-efficiency energy recovery and utilization device for a gas turbine cogeneration system according to claim 1, characterized in that: The collection module includes a slag discharge box (3) fixedly connected to the lower end of the cleaning cylinder (2). A rectangular groove (13) is provided at the lower end of the cleaning cylinder (2). The interior of the cleaning cylinder (2) is connected to the slag discharge box (3) through the rectangular groove (13). A scraper (16) is provided in the middle of the lower end of the barrier cylinder (8). A sliding plate (12) is slidably connected to the lower end of the middle of the slag discharge box (3).
8. The high-efficiency energy recovery and utilization device for a gas turbine cogeneration system according to claim 7, characterized in that: One end of the scraper (16) is fixedly connected to the cleaning cylinder (2), and the upper end of the scraper (16) is in contact with the barrier cylinder (8).
9. The high-efficiency energy recovery and utilization device for a gas turbine cogeneration system according to claim 1, characterized in that: The inner wall of the cleaning cylinder (2) is fixedly connected with multiple guide ring plates (7) at even intervals. The multiple guide ring plates (7) are all inclined, and the multiple guide ring plates (7) gradually increase in size from the air inlet pipe (4) to the exhaust pipe (11).
10. A high-efficiency energy recovery and utilization device for a gas turbine cogeneration system according to claim 1, characterized in that: The lower end of the mounting tube (1) is tapered.