Waste heat recovery device for gas turbine power plant

Abstract

The utility model relates to the technical field of waste heat recovery, in particular to a gas turbine power plant waste heat recovery device which comprises a box body, the right end of the front face of the box body is communicated with a gas guide pipe, the upper end of the gas guide pipe is communicated with a U-shaped guide pipe, and the left end and the right end of an inner cavity of the box body are fixedly connected with guide partition plates. An upper partition plate is fixedly connected between one end of the top of the guide partition plate and the top of the inner cavity of the box body. According to the utility model, by introducing an ultrasonic dust cleaning technology, the tubular electric dust remover can maintain high-efficiency dust removal performance, meanwhile, the equipment stability is obviously improved, the operation and maintenance cost is reduced, and after the first filter bag type filter cartridge or the second filter bag type filter cartridge is introduced, the dual dust removal capability on heat exchange gas is realized; dust in the gas is effectively removed, and the heat exchange efficiency of the device is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of waste heat recovery technology, specifically a waste heat recovery device for gas turbine power plants. Background Technology

[0002] When gas turbine power plants are engaged in industrial production, they emit a large amount of flue gas. This flue gas contains a lot of dust and impurities, and the flue gas temperature is high. Directly releasing it into the outside world will cause environmental pollution. At the same time, directly releasing the heat carried in the flue gas will result in the waste of resources.

[0003] Currently, existing waste heat recovery devices in gas turbine power plants lack the ability to effectively filter dust from flue gas. Due to the large amount of impurities in the flue gas, if dust cannot be effectively removed, impurities can easily adhere to the inner walls of subsequent heat exchange pipes, leading to reduced heat exchange efficiency and affecting their normal operation. Therefore, we propose a waste heat recovery device for gas turbine power plants. Utility Model Content

[0004] The purpose of this utility model is to provide a waste heat recovery device for gas turbine power plants, which has the advantages of good dust removal effect and high heat exchange efficiency. It solves the problem that existing waste heat recovery devices for gas turbine power plants lack the ability to effectively filter dust in flue gas. Because there are many impurities in the flue gas, if dust cannot be effectively removed, impurities will easily adhere to the inner wall of the subsequent heat exchange pipes, resulting in reduced heat exchange efficiency and affecting its normal use.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a waste heat recovery device for gas turbine power plants, comprising:

[0006] The box body has an air guide pipe connected to the right end of the front side of the box body, and a U-shaped guide pipe connected to the upper end of the air guide pipe. Guide partitions are fixedly connected to both ends of the inner cavity of the box body. An upper partition is fixedly connected between the top end of the guide partition and the top of the inner cavity of the box body, and a lower partition is fixedly connected between the bottom end of the guide partition and the bottom of the inner cavity of the box body. Multiple equidistantly distributed corrugated heat exchange tubes are connected between the lower partition and the upper partition.

[0007] A tubular electrostatic precipitator is fixedly installed on the right side of the housing. The upper end of the front of the tubular electrostatic precipitator is connected to a clean gas discharge pipe. A first filter bag filter cartridge and a second filter bag filter cartridge are fixedly installed between the clean gas discharge pipe and the U-shaped guide pipe from top to bottom.

[0008] A transducer and mounting bracket are fixedly installed at the lower front end of the tubular electrostatic precipitator, and an ultrasonic generator is fixedly installed on the front of the mounting bracket.

[0009] Preferably, a cold water pipe is connected to the right end of the front of the box, a hot water pipe is connected to the left end of the rear side of the box, and an exhaust pipe is connected to the left end of the top of the box.

[0010] Preferably, the lower end of the tubular electrostatic precipitator is connected to an air inlet pipe.

[0011] Preferably, the ultrasonic generator and the transducer are electrically connected via a high-frequency cable.

[0012] Preferably, both the upper and lower ends of the clean gas discharge pipe and the U-shaped guide pipe are equipped with manual valve bodies.

[0013] Preferably, the lower end of the tubular electrostatic precipitator is connected to a dust collection box, and the front of the dust collection box is provided with a viewing window.

[0014] Preferably, the right end of the top of the dust collection box is connected to a dust removal pipe, and the outer surface of the dust removal pipe is threaded with a sealing cap.

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

[0016] 1. This utility model introduces ultrasonic cleaning technology, which enables the tubular electrostatic precipitator to significantly improve equipment stability and reduce operation and maintenance costs while maintaining high dust removal performance. Furthermore, by introducing a first filter bag or a second filter bag, it achieves the ability to perform dual dust removal on the heat exchange gas, effectively removing dust from the gas and ensuring the heat exchange efficiency of the device.

[0017] 2. In this invention, the gas after dust removal is evenly distributed and then exchanges heat with water, wherein the water flows from bottom to top, and the heat exchange efficiency of the device is improved with the aid of increasing the heat exchange path. Attached Figure Description

[0018] Figure 1 This is a first-view structural diagram of the present invention;

[0019] Figure 2 This is a schematic diagram of the cross-sectional structure of the present invention from a second perspective;

[0020] Figure 3 This is a schematic diagram of the structure of the corrugated heat exchange tube and the upper and lower partitions of this utility model.

[0021] Figure 4 This is a schematic diagram of the combined structure of the tubular electrostatic precipitator and the second filter bag filter cartridge of this utility model.

[0022] In the diagram: 1. Housing; 101. Cold water pipe; 102. Hot water pipe; 103. Exhaust pipe; 104. Air guide pipe; 105. Guide partition; 106. Upper partition; 107. Lower partition; 108. Corrugated heat exchange tube; 2. Tubular electrostatic precipitator; 201. Clean gas discharge pipe; 202. Manual valve body; 203. First filter bag filter cartridge; 204. U-shaped guide pipe; 205. Second filter bag filter cartridge; 206. Transducer; 207. Mounting bracket; 208. Ultrasonic generator; 209. Air inlet pipe; 3. Dust collection box; 301. Cleaning pipe; 302. Visual observation window. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] The components of this application, including the housing 1, cold water pipe 101, hot water pipe 102, exhaust pipe 103, air guide pipe 104, guide partition 105, upper partition 106, lower partition 107, corrugated heat exchange tube 108, tubular electrostatic precipitator 2, clean gas discharge pipe 201, manual valve body 202, first filter bag filter cartridge 203, U-shaped guide pipe 204, second filter bag filter cartridge 205, transducer 206, mounting bracket 207, ultrasonic generator 208, air inlet pipe 209, dust collection box 3, dust removal pipe 301, and visual observation window 302, are all general standard parts or parts known to those skilled in the art. Their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0027] Example 1

[0028] Please see Figures 1-4 As shown, this utility model provides a technical solution: a waste heat recovery device for gas turbine power plants, comprising:

[0029] The box 1 has a gas duct 104 connected to the right end of the front side of the box 1. The upper end of the gas duct 104 is connected to a U-shaped guide pipe 204. The left and right ends of the inner cavity of the box 1 are fixedly connected to guide partitions 105. The top end of the guide partition 105 is fixedly connected to the top of the inner cavity of the box 1, and the bottom end of the guide partition 105 is fixedly connected to the bottom of the inner cavity of the box 1, and multiple equidistant corrugated heat exchange tubes 108 are connected between the lower partition 107 and the upper partition 106.

[0030] A tubular electrostatic precipitator 2 is fixedly installed on the right side of the housing 1. A clean gas discharge pipe 201 is connected to the upper end of the front of the tubular electrostatic precipitator 2. A first filter bag filter cartridge 203 and a second filter bag filter cartridge 205 are fixedly installed between the clean gas discharge pipe 201 and the U-shaped guide pipe 204 from top to bottom.

[0031] A transducer 206 and a mounting bracket 207 are fixedly installed on the lower front end of the tubular electrostatic precipitator 2. An ultrasonic generator 208 is fixedly installed on the front of the mounting bracket 207.

[0032] A cold water pipe 101 is connected to the right end of the front of the housing 1, a hot water pipe 102 is connected to the left end of the rear side of the housing 1, an exhaust pipe 103 is connected to the left end of the top of the housing 1, an air inlet pipe 209 is connected to the lower end of the rear side of the tubular electrostatic precipitator 2, and the ultrasonic generator 208 and the transducer 206 are electrically connected by a high-frequency cable.

[0033] This technical solution: After moving the device to the operating position, the cold water delivery pipe and hot water recovery pipe are connected to the cold water pipe 101 and hot water pipe 102 respectively. The heat exchange gas then enters the tubular electrostatic precipitator 2 through the inlet pipe 209. The tubular electrostatic precipitator 2 uses a high-voltage electric field to charge dust particles, and then uses the electric field force to adsorb the charged dust onto the collecting electrode (anode), thereby achieving separation of dust and flue gas. The separated gas can be sent through the clean gas discharge pipe 201 into the first filter bag filter cartridge 203 or the second filter bag filter cartridge 205 for further filtration, thus achieving effective dust removal from the heat exchange gas. The dust-removed gas can then... The U-shaped guide pipe 204 and the air guide pipe 104 enter the housing 1. The guide baffle 105 improves the heat exchange path within the housing 1. Simultaneously, the upper baffle 106 and lower baffle 107, in conjunction with the guide baffle 105, form two independent cavities within the housing 1. After the dust-removed gas enters the cavity formed by the lower baffle 107, it is rapidly dispersed into multiple corrugated heat exchange tubes 108. With the gas flow, rapid heat exchange is achieved between the gas and the water entering the housing 1 through the cold water pipe 101. Finally, when the heat-exchanged gas enters the cavity formed by the upper baffle 106, it is discharged outwards through the exhaust pipe 103. The water, after heat exchange, can be recycled into the hot water recovery pipe through the hot water pipe 102. Through the ultrasonic generator 208 and transducer 206, the ultrasonic waves generated by the ultrasonic generator 208 are converted into mechanical vibrations by the transducer 206 and transmitted to the collecting electrode of the tubular electrostatic precipitator 2. This vibration causes "acoustic fatigue" of the accumulated dust, weakening the bond between the dust and the inner wall of the collecting electrode. Simultaneously, the vibration can also cause the dust to crack and loosen. Under the action of gravity and airflow, the dust falls off the inner wall of the collecting electrode, thus achieving the purpose of dust removal. Especially for fine particulate dust and sticky dust, compared with the traditional mechanical vibration dust removal method, ultrasonic cleaning... The ash can be applied more evenly to the collecting electrode, reducing dust residue. At the same time, ultrasonic cleaning can be performed during the operation of the tubular electrostatic precipitator 2 without stopping the machine, avoiding production interruptions caused by downtime for cleaning, improving the operating efficiency of the equipment. Furthermore, ultrasonic cleaning can remove accumulated dust in real time or periodically, ensuring that the surface of the collecting electrode remains clean at all times, maintaining a stable electric field strength, and avoiding fluctuations in the dust removal efficiency of the tubular electrostatic precipitator 2 due to untimely cleaning. By introducing ultrasonic cleaning technology, the tubular electrostatic precipitator 2 can significantly improve equipment stability and reduce operation and maintenance costs while maintaining high-efficiency dust removal performance, making it particularly suitable for refined dust removal needs and complex working conditions.

[0034] Example 2

[0035] Based on Embodiment 1, this utility model is as follows: Figures 1-4 As shown, manual valve bodies 202 are provided at both the upper and lower ends of the clean gas discharge pipe 201 and the U-shaped guide pipe 204.

[0036] This technical solution allows selection of which filter cartridge 203 or the second filter cartridge 205 to operate via the manual valve 202. Furthermore, by operating the manual valve 202, the first filter cartridge 203 or the second filter cartridge 205 can be replaced without affecting the filtration operation of the device.

[0037] Example 3

[0038] Based on Embodiment 1, this utility model is as follows: Figures 1-4 As shown, the lower end of the tubular electrostatic precipitator 2 is connected to a dust collection box 3. A viewing window 302 is provided on the front of the dust collection box 3. A cleaning pipe 301 is connected to the right end of the top of the dust collection box 3, and a sealing cap is threaded on the outer surface of the cleaning pipe 301.

[0039] This technical solution: By setting up the dust collection box 3, the dust removed by the tubular electrostatic precipitator 2 can be collected. By setting up the visual observation window 302, the amount of dust in the dust collection box 3 can be intuitively understood. By setting up the dust cleaning pipe 301, the dust cleaning work in the dust collection box 3 is convenient.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A waste heat recovery device for a gas turbine power plant, characterized in that, include: The box body (1) has a gas guide pipe (104) connected to the right end of the front side of the box body (1), and a U-shaped guide pipe (204) connected to the upper end of the gas guide pipe (104). The left and right ends of the inner cavity of the box body (1) are fixedly connected to guide partitions (105). An upper partition (106) is fixedly connected between the top end of the guide partition (105) and the top of the inner cavity of the box body (1). A lower partition (107) is fixedly connected between the bottom end of the guide partition (105) and the bottom of the inner cavity of the box body (1). Multiple equidistant corrugated heat exchange tubes (108) are connected between the lower partition (107) and the upper partition (106). A tubular electrostatic precipitator (2) is fixedly installed on the right side of the housing (1). The upper end of the front of the tubular electrostatic precipitator (2) is connected to a clean gas discharge pipe (201). A first filter bag filter cartridge (203) and a second filter bag filter cartridge (205) are fixedly installed between the clean gas discharge pipe (201) and the U-shaped guide pipe (204) from top to bottom. A transducer (206) and a mounting bracket (207) are fixedly installed on the lower front end of the tubular electrostatic precipitator (2). An ultrasonic generator (208) is fixedly installed on the front of the mounting bracket (207).

2. The waste heat recovery device for a gas turbine power plant according to claim 1, characterized in that: A cold water pipe (101) is connected to the right end of the front of the box (1), a hot water pipe (102) is connected to the left end of the rear side of the box (1), and an exhaust pipe (103) is connected to the left end of the top of the box (1).

3. The waste heat recovery device for a gas turbine power plant according to claim 1, characterized in that: The lower end of the tubular electrostatic precipitator (2) is connected to an air inlet pipe (209).

4. The waste heat recovery device for a gas turbine power plant according to claim 1, characterized in that: The ultrasonic generator (208) and the transducer (206) are electrically connected via a high-frequency cable.

5. The waste heat recovery device for a gas turbine power plant according to claim 1, characterized in that: Manual valve bodies (202) are provided at both the upper and lower ends of the clean gas discharge pipe (201) and the U-shaped guide pipe (204).

6. The waste heat recovery device for a gas turbine power plant according to claim 1, characterized in that: The lower end of the tubular electrostatic precipitator (2) is connected to a dust collection box (3), and a viewing window (302) is provided on the front of the dust collection box (3).

7. A waste heat recovery device for a gas turbine power plant according to claim 6, characterized in that: The dust collection box (3) has a dust removal pipe (301) connected to the right end of the top, and the outer surface of the dust removal pipe (301) is threaded with a sealing cap.

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