An efficient waste heat boiler system for a gas turbine

Abstract

The present application relates to the technical field of waste heat boiler, in particular to a kind of high-efficiency waste heat boiler system of gas turbine, comprising: ash removal power component, ash removal power component provides power on tube bundle assembly;Further comprising: ash removal component, the ash removal component is arranged on the tube bundle assembly, ash removal component includes support transmission component and reciprocating ash removal component, support transmission component is drivingly connected with ash removal power component on tube bundle assembly, reciprocating ash removal component is driven on support transmission component, and the heating tube bundle of tube bundle assembly is ashed;Ash removal collection component, ash removal collection component is connected with reciprocating ash removal component, to concentrate and discharge the fly ash particle that reciprocating ash removal component is cleaned from heating tube bundle outside.The present application is high in degree of automation and ash removal efficiency, can realize effective, automated cleaning to helical fin ash under the condition that gas turbine continues to operate (non-stop state), and can effectively prevent the fly ash particle cleaned from flying again and re-depositing.

Description

Technical Field

[0001] This invention relates to the field of waste heat boiler technology, and more particularly to a high-efficiency waste heat boiler system for a gas turbine. Background Technology

[0002] A gas turbine is a rotary thermal engine that directly converts the thermal energy of high-temperature gas into mechanical energy. It is widely used in energy systems, industrial drives, and other fields. To improve overall energy efficiency, gas turbines are often combined with Heat Recovery Steam Generators (HRSGs) for combined cycle operation. The high-temperature flue gas emitted by the gas turbine is used to heat water or generate steam, which drives a steam turbine for secondary power generation or heating.

[0003] In combined cycle systems, waste heat boilers are key equipment for recovering waste heat. They contain numerous heat exchange tube bundles (heating tube bundles), and to enhance heat transfer, the outer surface of these tube bundles is typically welded or wound with spiral fins to increase the heat exchange area. However, the fuels used in gas turbines (such as heavy oil, crude oil, or certain low-quality fuels) often contain a large amount of fly ash particles in the flue gas produced after combustion. As this fly ash flows through the spiral finned tube bundles of the waste heat boiler, it easily deposits and adheres to the fin gaps and tube wall surfaces, forming an ash layer.

[0004] The presence of ash buildup significantly increases thermal resistance and reduces heat exchange efficiency, leading to a decrease in steam output and temperature parameters of the waste heat boiler, which in turn affects the power generation efficiency and thermal economy of the entire combined cycle system. Simultaneously, ash buildup increases flue gas flow resistance, causing increased back pressure in the gas turbine and affecting its stable operation. More seriously, if adhesive fly ash is not cleaned promptly, it may sinter at high temperatures, forming hard, difficult-to-remove ash deposits, even blocking flue gas passages and forcing system shutdown for manual cleaning, severely impacting equipment availability and operational continuity.

[0005] To address the ash accumulation problem in waste heat boilers, the following ash removal methods are commonly used in existing technologies: 1. Fixed soot blowers: such as steam soot blowers or sonic soot blowers; steam soot blowers use high-pressure steam jets to flush the tube bundle, but their blowing range is limited, there are dead zones in the soot blowing, and long-term use will cause erosion and wear on the tube bundle. Sonic soot blowers use sound wave vibrations to dislodge dust particles, but they are not effective for highly viscous or sintered ash.

[0006] 2. Steel ball cleaning system: This system cleans the ash by dropping steel balls into the flue and relying on the impact force of the falling steel balls to collide with the tube bundle. This system has a complex structure, requires a large investment, and the continuous impact of the steel balls on the tube wall may cause damage. In addition, a complex separation and conveying device is required to separate and recover the steel balls from the ash.

[0007] 3. Offline dust removal: This involves cleaning the unit manually or with high-pressure water after it has been shut down. This method cannot be performed online, requiring the sacrifice of power generation time and resulting in direct economic losses.

[0008] The aforementioned existing technologies generally have the following shortcomings: First, it is difficult to achieve effective and automated cleaning of ash accumulation on the spiral fins under the condition of continuous operation of the gas turbine (non-shutdown state); second, there is a lack of effective means to centrally discharge the cleaned fly ash particles, which causes some ash particles to fly up again and redeposit in the flue, greatly reducing the cleaning effect.

[0009] Therefore, how to design a system that can automatically and efficiently remove ash from the spiral finned tube bundle of the waste heat boiler without interrupting the operation of the gas turbine, and orderly discharge the removed fly ash outside the boiler to improve heat exchange efficiency and ensure long-term stable operation of the system, is a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0010] To address the technical problems existing in the prior art, embodiments of the present invention provide a high-efficiency waste heat boiler system for gas turbines. The technical solution is as follows: A high-efficiency waste heat boiler system for a gas turbine includes: a ash removal power unit that provides power to a tube bundle assembly; and further includes: A dust removal component is disposed on the tube bundle assembly. The dust removal component includes a support transmission component and a reciprocating dust removal component. The support transmission component is connected to the dust removal power component on the tube bundle assembly. The reciprocating dust removal component is driven on the support transmission component to clean the heating tube bundle of the tube bundle assembly. A dust collection device is provided, which is connected in connection with the reciprocating dust removal device to collect and discharge the fly ash particles cleaned off the heating tube bundle by the reciprocating dust removal device.

[0011] Preferably, the supporting transmission component includes a transmission screw, one end of which is rotatably disposed on the top cover frame of the tube bundle assembly, and the other end of which extends downward and is rotatably mounted on the waste heat boiler body.

[0012] Preferably, the reciprocating cleaning component includes a cleaning support and a rotating cleaning component. The cleaning support is driven to slide back and forth along the axial direction on the support transmission component, thereby driving the connected rotating cleaning component to move up and down to clean the spiral fins of the heating tube bundle. The rotating cleaning component is driven to be connected to the support transmission component on the cleaning support to rotate and clean the spiral fins inside.

[0013] Preferably, the dust removal support includes a dust removal support base and a nut. The nut is fixedly mounted on the dust removal support base and fitted onto the transmission screw, so that the dust removal support base can be moved up and down by the rotation of the transmission screw.

[0014] Preferably, a support plate is provided in the inner tube of the dust removal support seat, and the support plate divides the dust removal support seat into a dust removal chamber and a dust discharge chamber. One end of the nut is fixedly disposed through one end of the support plate, and the other end of the nut is fixedly disposed through one end of the bottom surface of the dust removal support seat.

[0015] Preferably, the rotating dust removal component includes a rotating dust removal seat, a rolling dust removal component, and a rotating transmission component. The rotating dust removal seat is rotatably mounted on the dust removal support component and is sleeved outside the heating tube bundle. The rolling dust removal component performs rolling dust removal on the spiral fins on the rotating dust removal seat. The rotating transmission component is connected to the support transmission component and the rotating dust removal seat respectively to drive the rotating dust removal seat to rotate circumferentially.

[0016] Preferably, the rotating dust removal seat includes a spiral dust removal tube and a spiral blade. The spiral dust removal tube is rotatably mounted on the dust removal support seat, and the spiral dust removal tube is sleeved on the spiral blade. The spiral blade is fixedly embedded in the inner wall of the spiral dust removal tube to provide support for the rolling dust removal component.

[0017] Preferably, the rolling dust removal component includes a guide tube, a spring, a guide shaft, balls, and a pressure cap. One end of the guide tube is disposed on the surface of the spiral blade, the spring is embedded in the guide tube, one end of the guide shaft is axially slidably fitted into the other end of the guide tube, the balls are rotatably fitted into the rolling groove on the other end face of the guide shaft, the pressure cap is fastened to the other end face of the guide shaft, and the rolling hole on the pressure cap is sleeved on the balls.

[0018] Preferably, multiple sets of the rolling cleaning components are distributed on the upper and lower surfaces of the spiral blades, so that the upper and lower surfaces of the spiral blades at the same position are symmetrically pressed by the rolling balls of a set of the rolling cleaning components.

[0019] Preferably, the ash collection component includes a dust discharge pipe, a dust discharge hose, and a dust collection device. One end of the dust discharge pipe passes through the side wall of the waste heat boiler body in a sealed manner. One end of the dust discharge hose is connected to one end of the dust discharge pipe, and the other end of the dust discharge hose is connected to one end of the ash discharge chamber. The dust collection device is connected to the other end of the dust discharge pipe, so as to discharge the cleaned fly ash particles from the ash discharge through hole on the spiral ash collection pipe through the ash discharge chamber.

[0020] The beneficial effects of the technical solutions provided in the embodiments of the present invention include at least the following: (1) The high-efficiency waste heat boiler system of the gas turbine of the present invention has a high degree of automation and high ash removal efficiency. It can effectively and automatically clean the ash accumulated on the spiral fins under the condition of continuous operation of the gas turbine (non-shutdown state); and can effectively prevent the fly ash particles after cleaning from being re-flying and redepositing. (2) The high-efficiency waste heat boiler system of the gas turbine of the present invention is provided with a support transmission component, a reciprocating ash removal component, an ash removal power component and an ash removal collection component. The ash removal power component can drive the reciprocating ash removal component through the support transmission component. In the non-shutdown state of the gas turbine unit, the spiral fins of the heating tube bundle are automatically reciprocated along the axial direction for ash removal. The rolling ash removal component rolls and squeezes the surface of the spiral fins, which can peel off the dust deposited on the surface of the spiral fins. The large scale and coke after peeling fall to the bottom of the waste heat boiler body. The fly ash particles are discharged and collected by the ash removal collection component, which significantly improves the ash removal efficiency of the spiral fins, prevents secondary pollution and deposition, and ensures that the heat exchange efficiency of the waste heat boiler is always maintained at the best level, thereby ensuring the power generation efficiency and thermal economy of the combined cycle system. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention installed behind the waste heat boiler body; Figure 2 This is the front view of the present invention; Figure 3 For the present invention Figure 2 A magnified view of part B in the image; Figure 4 This is a three-dimensional structural diagram of the present invention; Figure 5 For the present invention Figure 4 A magnified view of part E in the image; Figure 6 For the present invention Figure 2 Schematic diagram of the three-dimensional structure in the CC direction; Figure 7 For the present invention Figure 6 A magnified view of part of F; Figure 8 For the present invention Figure 2 Schematic diagram of the three-dimensional structure in the AA direction section; Figure 9 For the present invention Figure 8 A magnified view of a portion of G; Figure 10 For the present invention Figure 2 Schematic diagram of the three-dimensional structure in the DD direction.

[0022] In the diagram: 1-Transmission screw, 2-Top cover frame, 3-Waste heat boiler body, 4-Helical fins, 5-Ash cleaning support seat, 6-Nut, 7-Support plate, 8-Ash discharge chamber, 9-Helical ash cleaning pipe, 10-Helical blade, 11-Guide tube, 12-Spring, 13-Guide shaft, 14-Ball bearing, 15-First transmission wheel, 16-Second transmission wheel, 17-Transmission belt, 18-Motor, 19-Rotating shaft, 20-Gear transmission box, 21-Heating tube bundle. Detailed Implementation

[0023] The technical solution of the present invention will now be described with reference to the accompanying drawings.

[0024] In embodiments of the present invention, words such as "exemplarily," "for example," etc., are used to indicate that something is an example, illustration, or description. Any embodiment or design described as "exemplary" in the present invention should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of the word "exemplary" is intended to present the concept in a concrete manner. Furthermore, in embodiments of the present invention, the meaning expressed by "and / or" can be both, or either one.

[0025] In the embodiments of this invention, the terms "image" and "picture" may sometimes be used interchangeably. It should be noted that, without emphasizing the distinction between them, they convey the same meaning. Similarly, the terms "of," "corresponding (relevant)," and "corresponding" may sometimes be used interchangeably. It should be noted that, without emphasizing the distinction between them, they convey the same meaning.

[0026] In this embodiment of the invention, sometimes a subscript such as W1 may be written in a non-subscript form such as W1. When the difference is not emphasized, the meaning they express is the same.

[0027] To make the technical problems, technical solutions and advantages of the present invention clearer, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.

[0028] according to Figures 1-10 As shown, a high-efficiency waste heat boiler system for a gas turbine includes a cleaning component, a cleaning power component, and a cleaning collection component. The cleaning component performs cleaning operations on a tube bundle assembly. The cleaning power component drives the cleaning component connected to the tube bundle assembly. The cleaning collection component is connected to the cleaning component to collect and discharge the dust cleaned by the cleaning component from the tube bundle assembly.

[0029] The cleaning component includes a support transmission component and a reciprocating cleaning component. The support transmission component is connected to the cleaning power component on the tube bundle assembly. The reciprocating cleaning component is driven by the support transmission component to clean the heating tube bundle 21 on the tube bundle assembly.

[0030] The supporting transmission component includes a transmission screw 1 and a rotating seat. One end of the transmission screw 1 rotatably passes through the top cover frame 2 of the tube bundle assembly, and the other end of the transmission screw 1 extends downward and is rotatably mounted on the rotating seat. The axis of the transmission screw 1 is parallel to the axis of the tube bundle assembly. The rotating seat is disposed on the bottom surface of the waste heat boiler body 3, and the groove of the rotating seat is rotatably fitted onto the other end of the transmission screw 1, providing rotational support for the transmission screw 1.

[0031] Furthermore, the thread pitch, number of threads, and lead on the transmission screw 1 are consistent with the thread pitch, number of threads, and lead of the spiral fins 4 on the heating tube bundle 21. Alternatively, the thread pitch, number of threads, and lead on the transmission screw 1 are multiples of the thread pitch, number of threads, and lead of the spiral fins 4 on the heating tube bundle 21. The rotating seat is fixedly mounted on the bottom surface of the waste heat boiler body 3, and a thrust ball bearing is provided on the bottom surface of the circular groove on the rotating seat. A first bearing is embedded in the side wall of the groove of the rotating seat to be fitted onto the other end of the transmission screw 1, providing axial and radial support for the transmission screw 1. The heating tube bundle 21 is a spiral fin 4 tube bundle. Two sets of support transmission components are provided, and the two sets of support transmission components are symmetrically distributed on both sides of the heating tube bundle to stably transmit power to the connected reciprocating ash cleaning component.

[0032] The reciprocating cleaning component includes a cleaning support and a rotating cleaning component. The cleaning support is driven to slide back and forth along the axial direction on the support transmission component, thereby driving the connected rotating cleaning component to move up and down to clean the spiral fins 4 of the heating tube bundle 21. The rotating cleaning component is driven to be connected to the support transmission component on the cleaning support to rotate and clean the spiral fins 4 inside.

[0033] The dust removal support includes a dust removal support base 5 and a nut 6. The nut 6 is fixedly mounted on the dust removal support base 5 and is fitted onto the transmission screw 1, so that the dust removal support base 5 can move up and down by rotating the transmission screw 1.

[0034] The dust removal support 5 is generally rectangular tubular, with both ends closed. A support plate 7 is installed inside the inner tube of the dust removal support 5, dividing it into a dust removal chamber (the cavity formed between the top surface of the dust removal support 5 and the support plate 7) and a dust discharge chamber 8 (the cavity formed between the support plate 7 and the bottom surface of the dust removal support 5). One end of the nut 6 is fixedly disposed on one end of the support plate 7, and the other end is fixedly disposed on one end of the bottom surface of the dust removal support 5. A rotating through hole is provided on the top surface of the dust removal support 5 directly above the nut 6, allowing the screw to rotate through. Two nuts 6 are provided, symmetrically distributed on the dust removal support 5, and each nut 6 is fitted onto one of the two transmission screws 1. When the transmission screws 1 of the two sets of support transmission components rotate simultaneously, they will drive the two nuts 6, causing the dust removal support 5 to move up and down. The up-and-down movement of the dust removal support 5 drives the rotating dust removal component to clean the spiral fins 4. The dust discharge chamber 8 is used to discharge the dust cleaned from the spiral fins 4.

[0035] The rotating dust removal component includes a rotating dust removal seat, a rolling dust removal component, and a rotating transmission component. The rotating dust removal seat is rotatably mounted on the dust removal support component and is sleeved outside the heating tube bundle. The rolling dust removal component cleans the spiral fins 4 on the rotating dust removal seat. The rotating transmission component is connected to the support transmission component and the rotating dust removal seat respectively to drive the rotating dust removal seat to rotate circumferentially, thereby driving the rolling dust removal component to roll and clean the spiral fins 4.

[0036] The rotating dust removal seat includes a spiral dust removal tube 9 and a spiral blade 10. The spiral dust removal tube 9 is rotatably mounted on the dust removal support seat 5, and the spiral dust removal tube 9 is sleeved on the spiral blade 4. The spiral blade 10 is fixedly embedded in the inner wall of the spiral dust removal tube 9 to provide support for the rolling dust removal component.

[0037] The spiral cleaning tube 9 is rotatably fitted into the second bearing on the top surface of the cleaning support 5, the third bearing on the support plate 7, and the fourth bearing on the bottom surface of the cleaning support 5, so that the spiral cleaning tube 9 is axially locked in the circumferential rotation of the cleaning support 5, and the axis of the spiral cleaning tube 9 coincides with the axis of the heating tube bundle. The inner diameter of the spiral cleaning tube 9 is larger than the outer diameter of the spiral fin 4. The thread pitch, number of threads, and lead of the spiral blade 10 are consistent with the thread pitch, number of threads, and lead of the spiral fin 4 on the heating tube bundle, and the inner diameter of the spiral blade 10 is larger than the inner diameter of the spiral fin 4, and the outer diameter of the spiral blade 10 is larger than the outer diameter of the spiral fin 4. The spiral blade 10 is located between the spiral fins 4 in the axial direction, that is, the distance from the upper surface of the spiral blade 10 to the lower surface of the adjacent spiral fin 4 is the same as the distance from the lower surface of the spiral blade 10 to the upper surface of the adjacent spiral fin 4.

[0038] Multiple rotating dust removal seats are provided (the number of rotating dust removal seats is the same as the number of heating tube bundles in a row, so that each heating tube bundle is fitted with a spiral dust removal tube 9). Multiple spiral dust removal tubes 9 are fitted one by one onto the multiple heating tube bundles in a row to clean the multiple heating tube bundles in a row at the same time.

[0039] The rolling dust removal component includes a guide tube 11, a spring 12, a guide shaft 13, ball bearings 14, and a pressure cap. One end of the guide tube 11 is fixedly disposed on the surface of the spiral blade 10. The spring 12 is embedded in the guide tube 11. One end of the guide shaft 13 is axially slidably fitted into the other end of the guide tube 11, and one end of the guide shaft 13 is connected to the spring 12. The ball bearings 14 are rotatably embedded in a rolling groove (the rolling groove is spherical) on the other end face of the guide shaft 13. The pressure cap is fastened to the other end face of the guide shaft 13, and the rolling hole on the pressure cap is fitted over the ball bearings 14. The spring 12 axially pushes the guide shaft 13, causing the ball bearings 14 to roll and press against the upper or lower surface of the spiral blade 4, thereby cleaning the dust adhering to the spiral blade 4.

[0040] Furthermore, multiple sets of the rolling cleaning components are provided, and the multiple sets of rolling cleaning components are symmetrically distributed on the upper and lower surfaces of the spiral blade 10, so that the upper and lower surfaces of the spiral blade 4 at the same position (the same point) are symmetrically pressed by the rolling balls 14 of the rolling cleaning components, so as to prevent the spiral blade 4 from being deformed during the cleaning process.

[0041] Alternatively, multiple sets of the rolling cleaning components distributed at different positions on the upper (or lower) surface of the spiral blade 10 are spaced at different horizontal distances from the axis, so that the rolling and pressing positions of the spiral blade 4 in the radial direction are different, thereby improving the cleaning efficiency.

[0042] The rotary transmission component includes a first transmission wheel 15, a second transmission wheel 16, and a transmission belt 17. The first transmission wheel 15 is axially slidably mounted on the transmission screw 1 within the dust removal chamber, and a slider on the inner ring sidewall of the first transmission wheel 15 is slidably embedded in a groove on the sidewall of the transmission screw 1. The second transmission wheel 16 is fixedly mounted on the spiral dust removal tube 9. The transmission belt 17 simultaneously engages with and transmits power to both the first transmission wheel 15 and the second transmission wheel 16, so that the rotation of the transmission screw 1 drives the spiral dust removal tube 9 to rotate.

[0043] Furthermore, the first transmission wheel 15 is axially locked and rotates circumferentially within the dust removal chamber. Alternatively, thrust ball bearings are provided between the top surface of the first transmission wheel 15 and the top surface of the dust removal support 5, and between the bottom surface of the first transmission wheel 15 and the support plate 7. Two first transmission wheels 15 are provided, each correspondingly fitted onto one of the two transmission screws 1. Multiple second transmission wheels 16 are provided, each correspondingly fixedly fitted onto one of the multiple spiral dust removal tubes 9. Alternatively, both the first transmission wheel 15 and the second transmission wheel 16 are synchronous pulleys (high-temperature resistant synchronous pulleys), and the transmission belt 17 is a high-temperature resistant synchronous belt. The transmission belt 17 is fitted around both the first transmission wheel 15 and the second transmission wheel 16 to improve transmission accuracy.

[0044] When the transmission screw 1 rotates in the forward direction, it drives the dust removal support 5 to move upward through the nut 6. Simultaneously, it drives the spiral dust removal tube 9 to rotate in the forward direction through the first transmission wheel 15, transmission belt 17, and second transmission wheel 16. The forward-rotating spiral dust removal tube 9 drives the balls 14 of the rolling dust removal component to roll and clean the spiral fins 4 in the forward direction. When the transmission screw 1 rotates in the reverse direction, it drives the dust removal support 5 to move downward through the nut 6. Simultaneously, it drives the spiral dust removal tube 9 to rotate in the reverse direction through the first transmission wheel 15, transmission belt 17, and second transmission wheel 16. The reverse-rotating spiral dust removal tube 9 drives the balls 14 of the rolling dust removal component to roll and clean the spiral fins 4 in the reverse direction. It should be noted that, for example, when the transmission screw 1 rotates one revolution, the distance by which the dust removal support 5 rises or falls is the same as the pitch of the spiral fins 4.

[0045] The ash removal power unit includes a motor 18, a rotating shaft 19, and a gear transmission box 20. The motor 18 is fixedly mounted on the top cover frame 2 of the waste heat boiler. One end of the transmission shaft is connected to the rotating shaft of the motor 18, and the other end of the transmission shaft is connected to the input shaft of the gear transmission box 20. The output shaft of the gear transmission box 20 is connected to one end of the transmission screw 1. Furthermore, the motor 18 is a dual-shaft motor, and the two transmission shafts transmit power to the two transmission screws 1 one-to-one through the gear transmission box 20.

[0046] The dust collection component includes a dust discharge pipe, a dust discharge hose, and a dust collection device. One end of the dust discharge pipe passes through the side wall of the waste heat boiler body 3 in a sealed manner. One end of the dust discharge hose is connected to one end of the dust discharge pipe, and the other end of the dust discharge hose is connected to one end of the ash discharge chamber 8. The dust collection device is connected to the other end of the dust discharge pipe to discharge the fly ash particles (fine dust, tiny solid particles, and dust) cleaned from the spiral fins 4 by the rolling dust collector to the outside, preventing fine dust from being re-adsorbed on the heating tube bundle behind or discharged into the atmosphere through the chimney behind the waste heat boiler.

[0047] Furthermore, the dust exhaust pipe is curved within the waste heat boiler body 3, with the bending direction aligned with the flue gas flow direction. The dust exhaust pipe's entry point is located at a predetermined distance in front of the heating tube bundle, and is situated at the midpoint of the waste heat boiler's side height. Alternatively, the dust exhaust hose can be a high-temperature resistant stainless steel flexible hose, a double-layer composite high-temperature flexible hose, or a conductive metal / fiberglass duct. Alternatively, the dust collection device can be a high-temperature resistant dust collection device.

[0048] It should be noted that the large pieces of scale and coke removed from the spiral fins 4 by the rolling cleaning element, due to their increased size and mass, will descend to the bottom of the waste heat boiler. The removed fly ash particles are then discharged by the cleaning collection element. The ash discharge process is as follows: the fly ash particles removed from the spiral fins 4 enter the ash discharge chamber 8 through the ash discharge holes on the side wall of the spiral cleaning pipe 9 (multiple ash discharge holes are evenly distributed around the spiral cleaning pipe 9, and all of these holes are located within the ash discharge chamber 8), and then enter the dust discharge hose and ash discharge pipe before being discharged and collected. The up-and-down reciprocating cleaning frequency of the cleaning element is determined according to the actual ash accumulation.

[0049] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A high-efficiency waste heat boiler system for a gas turbine, comprising: A dust removal power unit, which provides power to the tube bundle assembly; characterized in that it further includes: A dust removal component is disposed on the tube bundle assembly. The dust removal component includes a support transmission component and a reciprocating dust removal component. The support transmission component is connected to the dust removal power component on the tube bundle assembly. The reciprocating dust removal component is driven on the support transmission component to clean the heating tube bundle of the tube bundle assembly. A dust collection device is provided, which is connected in connection with the reciprocating dust removal device to collect and discharge the fly ash particles cleaned off the heating tube bundle by the reciprocating dust removal device.

2. The high-efficiency waste heat boiler system for a gas turbine according to claim 1, characterized in that, The supporting transmission component includes a transmission screw, one end of which is rotatably mounted on the top cover frame of the tube bundle assembly, and the other end of which extends downward and is rotatably mounted on the waste heat boiler body.

3. The high-efficiency waste heat boiler system for a gas turbine according to claim 2, characterized in that, The reciprocating cleaning component includes a cleaning support and a rotating cleaning component. The cleaning support is driven to slide back and forth along the axial direction on the support transmission component, thereby driving the connected rotating cleaning component to move up and down to clean the spiral fins of the heating tube bundle. The rotating cleaning component is driven to be connected to the support transmission component on the cleaning support to rotate and clean the spiral fins inside.

4. The high-efficiency waste heat boiler system for a gas turbine according to claim 3, characterized in that, The dust removal support includes a dust removal support base and a nut. The nut is fixedly mounted on the dust removal support base and is fitted onto the transmission screw, so that the dust removal support base can move up and down by rotating the transmission screw.

5. The high-efficiency waste heat boiler system for a gas turbine according to claim 4, characterized in that, A support plate is provided in the inner tube of the dust removal support base, and the support plate divides the dust removal support base into a dust removal chamber and a dust discharge chamber. One end of the nut is fixedly disposed on one end of the support plate, and the other end of the nut is fixedly disposed on one end of the bottom surface of the dust removal support base.

6. The high-efficiency waste heat boiler system for a gas turbine according to any one of claims 3-5, characterized in that, The rotating dust removal component includes a rotating dust removal seat, a rolling dust removal component, and a rotating transmission component. The rotating dust removal seat is rotatably mounted on the dust removal support component and is sleeved outside the heating tube bundle. The rolling dust removal component performs rolling dust removal on the spiral fins on the rotating dust removal seat. The rotating transmission component is connected to the support transmission component and the rotating dust removal seat respectively to drive the rotating dust removal seat to rotate circumferentially.

7. The high-efficiency waste heat boiler system for a gas turbine according to claim 6, characterized in that, The rotating dust removal seat includes a spiral dust removal tube and spiral blades. The spiral dust removal tube is rotatably mounted on the dust removal support seat and is sleeved on the spiral blades. The spiral blades are fixedly embedded in the inner wall of the spiral dust removal tube to provide support for the rolling dust removal component.

8. The high-efficiency waste heat boiler system for a gas turbine according to claim 7, characterized in that, The rolling dust removal component includes a guide tube, a spring, a guide shaft, balls, and a pressure cap. One end of the guide tube is disposed on the surface of the spiral blade. The spring is embedded in the guide tube. One end of the guide shaft is axially slidably fitted into the other end of the guide tube. The balls are rotatably fitted into the rolling groove on the other end face of the guide shaft. The pressure cap is fastened to the other end face of the guide shaft, and the rolling hole on the pressure cap is sleeved on the balls.

9. The high-efficiency waste heat boiler system for a gas turbine according to claim 7, characterized in that, Multiple sets of the aforementioned rolling cleaning components are distributed on the upper and lower surfaces of the spiral blades, so that the upper and lower surfaces of the spiral blades at the same position are symmetrically pressed by the rolling balls of the aforementioned rolling cleaning components.

10. The high-efficiency waste heat boiler system for a gas turbine according to claim 5, characterized in that, The ash collection component includes a dust discharge pipe, a dust discharge hose, and a dust collection device. One end of the dust discharge pipe passes through the side wall of the waste heat boiler body in a sealed manner. One end of the dust discharge hose is connected to one end of the dust discharge pipe, and the other end of the dust discharge hose is connected to one end of the ash discharge chamber. The dust collection device is connected to the other end of the dust discharge pipe to discharge the cleaned fly ash particles from the ash discharge through hole on the spiral ash collection pipe through the ash discharge chamber.

Images