Generator outlet exhaust pipe structure

Abstract

The invention relates to the technical field of generator exhaust, and discloses a generator outlet exhaust pipe structure which comprises a connector and a vertical exhaust pipe, the bottom end of the connector is directly connected with the air outlet end of a generator, and the connector and the vertical exhaust pipe are connected through a metal bellow expansion joint. A vibration reduction component is arranged on the outer wall of the vertical exhaust pipe, and a temperature control component is arranged in the vertical exhaust pipe; the vibration reduction component comprises a fixed frame and a sliding frame, the fixed frame is connected with a wall and other fixed structures, thick springs and thin springs are used for forming a composite vibration reduction spring structure, and when the vertical exhaust pipe is subjected to low-frequency vibration, the displacement of the exhaust pipe is small, and at the moment, only the thin springs deform; when the vibration frequency rises and the displacement amount is too large, the thick spring starts to be connected with the thin spring in parallel for bearing, the variable stiffness characteristic is formed, the good vibration reduction effect is achieved, and meanwhile the damper works to absorb kinetic energy of vibration.

Description

Technical Field

[0001] The present invention relates to the technical field of generator exhaust, and in particular to a generator outlet exhaust pipe structure. Background Art

[0002] During operation, generators produce large amounts of harmful exhaust gases, including carbon dioxide, carbon monoxide, and nitrogen oxides. The primary function of a generator exhaust system is to effectively discharge these gases to maintain normal temperature and internal pressure balance, reduce the accumulation of exhaust gases inside the generator, and reduce the risk of performance degradation and damage, thereby effectively extending the generator's service life.

[0003] The existing vertical exhaust duct at the generator outlet is long and lacks structural rigidity, resulting in a correspondingly low natural frequency and a potential resonance risk. At the generator exhaust duct outlet, the expansion joint, a crucial component that connects the pipes, absorbs thermal expansion, and mitigates vibration, is relatively weak. Excessive pipe vibration can lead to fatigue fracture in the expansion joint. Failure of the expansion joint can directly disrupt the normal functioning of the generator exhaust system, potentially causing a more serious safety incident. Summary of the Invention

[0004] The object of the present invention is to provide a generator outlet exhaust pipe structure to solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions: a generator outlet exhaust pipe structure, comprising a connecting joint and a vertical exhaust pipe, wherein the bottom end of the connecting joint is directly connected to the exhaust end of the generator, the connecting joint and the vertical exhaust pipe are connected via a metal corrugated expansion joint, a vibration damping component is provided on the outer wall of the vertical exhaust pipe, and a temperature control component is provided inside the vertical exhaust pipe; The cam is fixedly mounted on the outer wall of the vertical exhaust pipe, and a connecting plate is fixedly mounted on the center position of the fixing frame. The connecting plate is slidably mounted on the middle section of the sliding frame. The top and bottom ends of the connecting plate are fixedly mounted on a fixing cylinder. A coarse spring and a fine spring are fixedly mounted on the inner wall of the fixing cylinder. The non-extension length of the fine spring is greater than the non-extension length of the coarse spring. A connecting ring is fixedly mounted on the top of the coarse spring, and a connecting disk is fixedly mounted on the top of the fine spring. The end of the connecting disk away from the fine spring is fixedly connected to the sliding frame. The diameter of the connecting disk is the same as the diameter of the connecting ring. A damper is fixedly mounted on the inner wall of the fixing cylinder, and the telescopic end of the damper is fixedly connected to the connecting disk.

[0006] Furthermore, the vertical exhaust pipe is made of austenitic stainless steel, a cavity is opened inside the vertical exhaust pipe, and a honeycomb metal skeleton is arranged in the cavity, and the inner layer of the vertical exhaust pipe is coated with a nano-ceramic coating.

[0007] Furthermore, two groups of vibration-damping components are provided and are arranged symmetrically about the central axis of the vertical exhaust pipe. The top and bottom ends of the fixing frame are both provided with protrusions, and the protrusions are located above and below the sliding frame.

[0008] Furthermore, a mounting seat is fixedly provided on the connecting joint, and there are two mounting seats. A pressure sensor is fixedly installed in one of the mounting seats, and a temperature sensor is fixedly installed in the other mounting seat. The detection ends of the pressure sensor and the temperature sensor are both located on the inner side of the connecting joint.

[0009] Furthermore, a high-temperature resistant elastic pad is fixedly mounted on the outer wall of the connecting disk facing the connecting ring, and the diameter of the high-temperature resistant elastic pad is consistent with the diameter of the connecting disk.

[0010] Furthermore, the temperature control component includes a hollow titanium alloy tube, a circulation tube, an ethylene glycol aqueous solution tank, and a micro oil pump. The hollow titanium alloy tube is arranged in the inner cavity of the vertical exhaust pipe. The liquid outlet end of the ethylene glycol aqueous solution tank is connected to the input end of the micro oil pump, and the output end of the micro oil pump is connected to the upper circulation tube, and the upper circulation tube is connected to the liquid inlet end of the hollow titanium alloy tube. The liquid inlet end of the ethylene glycol aqueous solution tank is connected to the lower circulation tube, and the lower circulation tube is connected to the liquid outlet end of the hollow titanium alloy tube. Micro perforations are opened on the inner wall of the vertical exhaust pipe.

[0011] Furthermore, a heating device is fixedly installed on the outer wall of the ethylene glycol aqueous solution tank, and the heating end of the heating device extends into the ethylene glycol aqueous solution tank.

[0012] Furthermore, an electric three-way valve is arranged between the connecting joint and the metal corrugated expansion joint, the bottom port of the electric three-way valve is connected to the connecting joint, the top port of the electric three-way valve is connected to the metal corrugated expansion joint, the side port of the electric three-way valve is connected to the output end of the pulser back-blowing dust collector through a pipeline, and a spiral guide groove is opened on the inner wall of the vertical exhaust pipe.

[0013] Furthermore, the top end of the vertical exhaust pipe is connected to an air outlet expansion pipe, and the air outlet expansion pipe consists of three sections: a connecting section, a trumpet section, and an expansion section.

[0014] Furthermore, a narrow air outlet pipe is slidingly provided inside the air outlet expansion pipe, the outer diameter of the narrow air outlet pipe is smaller than the inner diameter of the air outlet expansion pipe, and an integrally formed extended skirt is provided on the top of the narrow air outlet pipe, the diameter of the extended skirt is larger than the inner diameter of the air outlet expansion pipe, and the extended skirt is telescopically connected to the sliding frame through a lifting cylinder.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The composite damping spring structure is composed of a thick spring and a thin spring. When the vertical exhaust pipe is subjected to low-frequency vibration, the exhaust pipe displacement is small, and only the thin spring is deformed. When the vibration frequency increases and the displacement is excessive, the thick spring begins to load in parallel with the thin spring, forming a variable stiffness characteristic, which has an effective vibration reduction effect. At the same time, the damper works to absorb the kinetic energy of the vibration. When the intake air flows through the vertical exhaust pipe, the intake air will contact the hollow titanium alloy tube through the micro-perforations, and then exchange heat with the ethylene glycol aqueous solution in the hollow titanium alloy tube, causing the ethylene glycol aqueous solution itself to heat up. When the intake air temperature suddenly drops, the ethylene glycol aqueous solution itself can insulate the vertical exhaust pipe and prevent cracks in the vertical exhaust pipe caused by temperature difference stress. During the intake process, the micro oil pump can be regularly turned on to pump the ethylene glycol aqueous solution in the ethylene glycol aqueous solution tank into the circulation pipe, and then the ethylene glycol aqueous solution can be circulated, which can better insulate the vertical exhaust pipe. When the intake air temperature drops suddenly, the ethylene glycol aqueous solution itself can insulate the vertical exhaust pipe and prevent cracks in the vertical exhaust pipe caused by temperature difference stress. During the intake process, the micro oil pump can be turned on regularly to pump the ethylene glycol aqueous solution in the ethylene glycol aqueous solution tank into the circulation pipe, and then the ethylene glycol aqueous solution is circulated, which can better insulate the vertical exhaust pipe. When the air flow rate is low, the lifting cylinder drives the extended skirt to move downward, and then drives the narrow air outlet pipe to move downward, so that the narrow air outlet pipe blocks the air outlet end of the air outlet expansion pipe, so that the air flow flows through the narrow air outlet pipe instead of the air outlet expansion pipe. When the air flow rate increases, the lifting cylinder is opened to drive the extended skirt to move upward, and then drives the narrow air outlet pipe to move upward, so that part of the air flow flows through the air outlet expansion pipe and part flows through the narrow air outlet pipe. As the narrow air outlet pipe moves upward, the inner diameter of the air outlet channel gradually increases, thereby reducing the air flow rate. When the generator stops, the connecting channel can be switched through the electric three-way valve to connect the side port of the electric three-way valve with the metal bellows expansion joint, and the pulser back-blowing dust collector is turned on to generate a pulse cleaning airflow. The airflow enters the vertical exhaust pipe from the metal bellows expansion joint to remove dust from the inner wall of the vertical exhaust pipe, so as to avoid the original airflow in the vertical exhaust pipe from slowing down due to the stop of the generator, thereby causing the dust in the airflow to be adsorbed in the vertical exhaust pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 For the present invention Figure 1 A schematic diagram of the structure from the back view; Figure 3 This is a schematic structural diagram of the connecting joint of the present invention; Figure 4 It is a structural schematic diagram of the vibration-damping component of the present invention; Figure 5 It is a structural schematic diagram of a front cross-sectional view of the vibration damping component of the present invention; Figure 6 It is a structural schematic diagram of the fixed cylinder and its internal structure of the present invention; Figure 7 Schematic diagram of the structure of the temperature control component of the present invention; Figure 8 This is a schematic structural diagram of the air outlet expansion tube and the suction narrowing air outlet tube of the present invention; Figure 9 For the present invention Figure 8 Structural diagram of the cross-sectional view; Figure 10 This is a structural diagram of embodiment 2 of the present invention.

[0017] In the figure: 1. Connecting joint; 2. Metal bellows expansion joint; 3. Vertical exhaust pipe; 301. Honeycomb metal skeleton; 302. Spiral guide groove; 4. Vibration reduction component; 401. Fixed frame; 402. Sliding frame; 403. Connecting plate; 404. Fixed cylinder; 405. Connecting ring; 406. Thick spring; 407. Connecting plate; 408. Thin spring; 409. Damper; 5. Exhaust expansion pipe; 501. Connecting section; 502. Horn section; 503. Expansion section; 6. Temperature control component; 601. Hollow titanium alloy tube; 602. Circulating pipe; 603. Ethylene glycol aqueous solution tank; 604. Micro oil pump; 605. Heating equipment; 7. Mounting seat; 8. Pressure sensor; 9. Temperature sensor; 10. High-temperature resistant elastic pad; 11. Electric three-way valve; 12. Lifting cylinder; 13. Narrow exhaust pipe; 1301. Extended skirt. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0019] Example 1 See also Figures 1-9The present invention provides a technical solution: a generator outlet exhaust pipe structure, comprising a connecting joint 1 and a vertical exhaust pipe 3. The bottom end of the connecting joint 1 is directly connected to the outlet end of the generator. The connecting joint 1 and the vertical exhaust pipe 3 are connected by a metal corrugated expansion joint 2. A vibration damping component 4 is provided on the outer wall of the vertical exhaust pipe 3, and a temperature control component 6 is provided inside the vertical exhaust pipe 3. The vibration reduction component 4 includes a fixed frame 401 and a sliding frame 402. The fixed frame 401 is connected to a fixed structure such as a wall. The sliding frame 402 is fixedly mounted on the outer wall of the vertical exhaust pipe 3. A connecting plate 403 is fixedly installed at the center position of the fixed frame 401. The connecting plate 403 is slidably mounted on the middle section of the sliding frame 402. The top and bottom ends of the connecting plate 403 are fixedly mounted with a fixed cylinder 404. The inner wall of the fixed cylinder 404 is fixedly mounted with a coarse spring 406 and a fine spring 408. The non-extension length of the fine spring 408 is greater than the non-extension length of the coarse spring 406. The top of the coarse spring 406 is fixedly mounted with a connecting ring 405, and the top of the fine spring 408 is fixedly mounted with a connecting disk 407. One end of the disk 407 away from the fine spring 408 is fixedly connected to the sliding frame 402. The diameter of the connecting disk 407 is the same as that of the connecting ring 405. A damper 409 is fixedly installed on the inner wall of the fixed cylinder 404. The telescopic end of the damper 409 is fixedly connected to the connecting disk 407. The thick spring 406 and the thin spring 408 form a composite shock-absorbing spring structure. When the vertical exhaust pipe 3 is subjected to low-frequency vibration, the displacement of the exhaust pipe is small. At this time, only the thin spring 408 is deformed. When the vibration frequency increases and the displacement is excessive, the thick spring 406 begins to carry loads in parallel with the thin spring 408, forming a variable stiffness characteristic, which has a good vibration reduction effect. At the same time, the damper 409 works to absorb the kinetic energy of the vibration. The vertical exhaust pipe 3 is made of austenitic stainless steel. A cavity is defined within the vertical exhaust pipe 3, and a honeycomb metal skeleton 301 is disposed within the cavity. The inner layer of the vertical exhaust pipe 3 is coated with a nano-ceramic coating. The nano-ceramic coating utilizes its ultra-low thermal conductivity to isolate high-temperature exhaust gases, while its nano-scale smooth surface reduces exhaust friction resistance. The honeycomb metal skeleton 301 within the inner cavity provides excellent support. Two groups of vibration-damping components 4 are provided, and are arranged symmetrically about the central axis of the vertical exhaust pipe 3. The top and bottom ends of the fixed frame 401 are provided with protrusions, and the protrusions are located above and below the sliding frame 402, thereby increasing the vibration-damping structure and improving the vibration-damping effect. A mounting base 7 is fixedly provided on the connecting joint 1. There are two mounting bases 7. A pressure sensor 8 is fixedly installed in one of the mounting bases 7, and a temperature sensor 9 is fixedly installed in the other mounting base 7. The detection ends of the pressure sensor 8 and the temperature sensor 9 are both located on the inner side of the connecting joint 1. The pressure sensor 8 is provided to monitor the intake pressure, and the temperature sensor 9 is provided to monitor the intake temperature. A high-temperature resistant elastic pad 10 is fixedly mounted on the outer wall of the connecting disk 407 on the side facing the connecting ring 405. The diameter of the high-temperature resistant elastic pad 10 is consistent with the diameter of the connecting disk 407. When the thick spring 406 begins to intervene, the connecting disk 407 will press on the connecting ring 405. The provision of the high-temperature resistant elastic pad 10 on the connecting disk 407 can prevent the connecting ring 405 and the connecting disk 407 from directly colliding when they come into contact, thereby preventing damage to the connecting ring 405 and the connecting disk 407. The temperature control component 6 includes a hollow titanium alloy tube 601, a circulation tube 602, an ethylene glycol aqueous solution tank 603, and a micro oil pump 604. The hollow titanium alloy tube 601 is arranged in the inner cavity of the vertical exhaust pipe 3. The liquid outlet of the ethylene glycol aqueous solution tank 603 is connected to the input end of the micro oil pump 604, and the output end of the micro oil pump 604 is connected to the upper circulation tube 602. The upper circulation tube 602 is connected to the liquid inlet end of the hollow titanium alloy tube 601. The liquid inlet end of the ethylene glycol aqueous solution tank 603 is connected to the lower circulation tube 602. The lower circulation tube 602 is connected to the liquid outlet end of the hollow titanium alloy tube 601. The inner wall of the vertical exhaust pipe 3 is provided with a Micro-perforations: When the intake air flows through the vertical exhaust pipe 3, the intake air will contact the hollow titanium alloy tube 601 through the micro-perforations, and then exchange heat with the ethylene glycol aqueous solution in the hollow titanium alloy tube 601, so that the ethylene glycol aqueous solution itself is heated. When the intake air temperature suddenly drops, the ethylene glycol aqueous solution itself can keep the vertical exhaust pipe 3 warm, preventing the vertical exhaust pipe 3 from cracking under temperature difference stress. During the intake process, the micro oil pump 604 can be regularly turned on to pump the ethylene glycol aqueous solution in the ethylene glycol aqueous solution tank 603 into the circulation pipe 602, and then the ethylene glycol aqueous solution is circulated, which can better keep the vertical exhaust pipe 3 warm. A heating device 605 is fixedly mounted on the outer wall of the ethylene glycol aqueous solution tank 603. The heating end of the heating device 605 extends into the ethylene glycol aqueous solution tank 603. When the intake air temperature drops significantly or the ethylene glycol aqueous solution temperature is insufficient, the heating device 605 can be turned on to heat the ethylene glycol aqueous solution in the ethylene glycol aqueous solution tank 603, thereby allowing the ethylene glycol aqueous solution to effectively keep the vertical exhaust pipe 3 warm. The top of the vertical exhaust pipe 3 is connected to an outlet expansion pipe 5, which consists of a connecting section 501, a bell section 502, and an expansion section 503. The outlet expansion pipe 5 expands the exhaust inner diameter at the top of the vertical exhaust pipe 3, thereby reducing the airflow pressure at the outlet end of the vertical exhaust pipe 3, thereby avoiding a surge in resistance caused by excessive flow rate. The inner sliding part of the air outlet expansion tube 5 is provided with a narrow air outlet tube 13, the outer diameter of the narrow air outlet tube 13 is smaller than the inner diameter of the air outlet expansion tube 5, and the top of the narrow air outlet tube 13 is provided with an integrally formed extended skirt 1301, the diameter of the extended skirt 1301 is larger than the inner diameter of the air outlet expansion tube 5, and the extended skirt 1301 is telescopically connected to the sliding frame 402 through the lifting cylinder 12. The narrow air outlet tube 13 is used to control the inner diameter of the air outlet expansion tube 5. When the air flow rate is low, the lifting cylinder 12 drives the extended skirt 1301 to move downward, This drives the narrow air outlet pipe 13 downward, so that the narrow air outlet pipe 13 blocks the air outlet end of the air outlet expansion pipe 5, so that the airflow flows through the narrow air outlet pipe 13 instead of flowing through the air outlet expansion pipe 5. When the airflow velocity increases, the lifting cylinder 12 is opened to drive the extended skirt 1301 to move upward, and then drives the narrow air outlet pipe 13 upward, so that part of the airflow flows through the air outlet expansion pipe 5 and part flows through the narrow air outlet pipe 13. As the narrow air outlet pipe 13 moves upward, the inner diameter of the air outlet channel gradually increases, thereby reducing the airflow velocity.

[0020] Working principle: When in use, the engine intake air enters from the connecting joint 1, then flows through the metal corrugated expansion joint 2 and enters the vertical exhaust pipe 3. After the airflow enters the vertical exhaust pipe 3, it will cause the vertical exhaust pipe 3 to vibrate. When the vertical exhaust pipe 3 is subjected to low-frequency vibration, the displacement of the exhaust pipe is small, and at this time only the thin spring 408 is deformed; when the vibration frequency increases and the displacement is excessive, the thick spring 406 begins to bear in parallel with the thin spring 408, forming a variable stiffness characteristic, which has a good vibration reduction effect. At the same time, the damper 409 works to absorb the kinetic energy of the vibration. At the same time, when the intake air flows through the vertical exhaust pipe 3, the intake air will contact the hollow titanium alloy tube 601 through the micro-perforations, and then exchange heat with the ethylene glycol aqueous solution in the hollow titanium alloy tube 601, so that the ethylene glycol aqueous solution itself is heated. When the intake air temperature suddenly drops, the ethylene glycol aqueous solution itself can keep the vertical exhaust pipe 3 warm, preventing the vertical exhaust pipe 3 from cracking under the temperature difference stress. During the intake process, the micro oil pump 604 can be regularly turned on to pump the ethylene glycol aqueous solution in the ethylene glycol aqueous solution tank 603 into the circulation pipe 602, and then the ethylene glycol aqueous solution can be The alcohol aqueous solution is circulated, which can better insulate the vertical exhaust pipe 3. When the intake temperature suddenly drops, the ethylene glycol aqueous solution itself can insulate the vertical exhaust pipe 3 to prevent the vertical exhaust pipe 3 from cracking under the temperature difference stress. During the intake process, the micro oil pump 604 can be regularly turned on to pump the ethylene glycol aqueous solution in the ethylene glycol aqueous solution tank 603 into the circulation pipe 602, and then the ethylene glycol aqueous solution is circulated, which can better insulate the vertical exhaust pipe 3. When the air flow rate is low, the lifting cylinder 12 drives the extension skirt 1301 moves downward, thereby driving the narrow air outlet pipe 13 to move downward, so that the narrow air outlet pipe 13 blocks the air outlet end of the air outlet expansion pipe 5, so that the airflow flows through the narrow air outlet pipe 13 instead of flowing through the air outlet expansion pipe 5. When the airflow velocity increases, the lifting cylinder 12 is opened to drive the extended skirt 1301 to move upward, thereby driving the narrow air outlet pipe 13 to move upward, so that part of the airflow flows through the air outlet expansion pipe 5 and part flows through the narrow air outlet pipe 13. As the narrow air outlet pipe 13 moves upward, the inner diameter of the air outlet channel is gradually increased, thereby reducing the airflow velocity.

[0021] Example 2 See also Figures 1-10 The present invention provides a technical solution: a generator outlet exhaust pipe structure, comprising a connecting joint 1 and a vertical exhaust pipe 3. The bottom end of the connecting joint 1 is directly connected to the outlet end of the generator. The connecting joint 1 and the vertical exhaust pipe 3 are connected by a metal corrugated expansion joint 2. A vibration damping component 4 is provided on the outer wall of the vertical exhaust pipe 3, and a temperature control component 6 is provided inside the vertical exhaust pipe 3. The vibration reduction component 4 includes a fixed frame 401 and a sliding frame 402. The fixed frame 401 is connected to a fixed structure such as a wall. The sliding frame 402 is fixedly mounted on the outer wall of the vertical exhaust pipe 3. A connecting plate 403 is fixedly installed at the center position of the fixed frame 401. The connecting plate 403 is slidably mounted on the middle section of the sliding frame 402. The top and bottom ends of the connecting plate 403 are fixedly mounted with a fixed cylinder 404. The inner wall of the fixed cylinder 404 is fixedly mounted with a coarse spring 406 and a fine spring 408. The non-extension length of the fine spring 408 is greater than the non-extension length of the coarse spring 406. The top of the coarse spring 406 is fixedly mounted with a connecting ring 405, and the top of the fine spring 408 is fixedly mounted with a connecting disk 407. One end of the disk 407 away from the fine spring 408 is fixedly connected to the sliding frame 402. The diameter of the connecting disk 407 is the same as that of the connecting ring 405. A damper 409 is fixedly installed on the inner wall of the fixed cylinder 404. The telescopic end of the damper 409 is fixedly connected to the connecting disk 407. The thick spring 406 and the thin spring 408 form a composite shock-absorbing spring structure. When the vertical exhaust pipe 3 is subjected to low-frequency vibration, the displacement of the exhaust pipe is small. At this time, only the thin spring 408 is deformed. When the vibration frequency increases and the displacement is excessive, the thick spring 406 begins to carry loads in parallel with the thin spring 408, forming a variable stiffness characteristic, which has a good vibration reduction effect. At the same time, the damper 409 works to absorb the kinetic energy of the vibration. The vertical exhaust pipe 3 is made of austenitic stainless steel. A cavity is formed inside the vertical exhaust pipe 3, and a honeycomb metal skeleton 301 is provided in the cavity. The inner layer of the vertical exhaust pipe 3 is coated with a nano-ceramic coating. Two groups of vibration damping components 4 are provided, and are arranged symmetrically about the central axis of the vertical exhaust pipe 3. The top and bottom ends of the fixed frame 401 are provided with protrusions, and the protrusions are located above and below the sliding frame 402; A mounting base 7 is fixedly provided on the connecting joint 1. There are two mounting bases 7. A pressure sensor 8 is fixedly installed in one of the mounting bases 7, and a temperature sensor 9 is fixedly installed in the other mounting base 7. The detection ends of the pressure sensor 8 and the temperature sensor 9 are both located on the inner side of the connecting joint 1. A high-temperature resistant elastic pad 10 is fixedly mounted on the outer wall of the connecting disk 407 facing the connecting ring 405. The diameter of the high-temperature resistant elastic pad 10 is consistent with the diameter of the connecting disk 407. The temperature control component 6 includes a hollow titanium alloy tube 601, a circulation tube 602, an ethylene glycol aqueous solution tank 603, and a micro oil pump 604. The hollow titanium alloy tube 601 is arranged in the inner cavity of the vertical exhaust pipe 3. The liquid outlet of the ethylene glycol aqueous solution tank 603 is connected to the input end of the micro oil pump 604, and the output end of the micro oil pump 604 is connected to the upper circulation tube 602. The upper circulation tube 602 is connected to the liquid inlet end of the hollow titanium alloy tube 601. The liquid inlet end of the ethylene glycol aqueous solution tank 603 is connected to the lower circulation tube 602. The lower circulation tube 602 is connected to the liquid outlet end of the hollow titanium alloy tube 601. Micro perforations are opened on the inner wall of the vertical exhaust pipe 3; A heating device 605 is fixedly mounted on the outer wall of the ethylene glycol aqueous solution tank 603, and the heating end of the heating device 605 extends into the ethylene glycol aqueous solution tank 603; The top of the vertical exhaust pipe 3 is connected to the exhaust expansion pipe 5, which consists of three sections: a connecting section 501, a trumpet section 502, and an expansion section 503. A narrow outlet pipe 13 is slidably provided inside the outlet expansion pipe 5. The outer diameter of the narrow outlet pipe 13 is smaller than the inner diameter of the outlet expansion pipe 5. An integrally formed extended skirt 1301 is provided on the top of the narrow outlet pipe 13. The diameter of the extended skirt 1301 is larger than the inner diameter of the outlet expansion pipe 5. The extended skirt 1301 is telescopically connected to the sliding frame 402 via the lifting cylinder 12. An electric three-way valve 11 is arranged between the connecting joint 1 and the metal corrugated expansion joint 2. The bottom port of the electric three-way valve 11 is connected to the connecting joint 1, and the top port of the electric three-way valve 11 is connected to the metal corrugated expansion joint 2. The side port of the electric three-way valve 11 is connected to the output end of the pulser back-blowing dust collector through a pipeline. A spiral guide groove 302 is opened on the inner wall of the vertical exhaust pipe 3. The spiral guide groove 302 is used to guide the airflow flowing through the vertical exhaust pipe 3, thereby forming a spiral airflow. When the generator stops, the connecting channel can be switched by the electric three-way valve 11, so that the side port of the electric three-way valve 11 is connected to the metal corrugated expansion joint 2, and the pulser back-blowing dust collector is turned on to generate a pulse cleaning airflow. The airflow enters the vertical exhaust pipe 3 from the metal corrugated expansion joint 2 to remove dust from the inner wall of the vertical exhaust pipe 3, thereby avoiding the original airflow in the vertical exhaust pipe 3 from slowing down due to the stop of the generator, thereby causing dust in the airflow to be adsorbed in the vertical exhaust pipe 3.

[0022] Working principle: When in use, the engine intake air enters from the connecting joint 1, and then flows through the metal corrugated expansion joint 2 into the vertical exhaust pipe 3. After the airflow enters the vertical exhaust pipe 3, it will cause the vertical exhaust pipe 3 to vibrate. When the vertical exhaust pipe 3 is subjected to low-frequency vibration, the displacement of the exhaust pipe is small, and at this time only the thin spring 408 is deformed; when the vibration frequency increases and the displacement is excessive, the thick spring 406 begins to bear in parallel with the thin spring 408, forming a variable stiffness characteristic, which has a good vibration reduction effect. At the same time, the damper 409 works to absorb the kinetic energy of the vibration. At the same time, when the intake air flows through the vertical exhaust pipe 3, the intake air will contact the hollow titanium alloy tube 601 through the micro-perforations, Then, the ethylene glycol aqueous solution in the hollow titanium alloy tube 601 is heat-exchanged, so that the ethylene glycol aqueous solution itself is heated. When the intake air temperature suddenly drops, the ethylene glycol aqueous solution itself can insulate the vertical exhaust pipe 3 to prevent the vertical exhaust pipe 3 from cracking under the temperature difference stress. During the intake process, the micro oil pump 604 can be regularly turned on to pump the ethylene glycol aqueous solution in the ethylene glycol aqueous solution tank 603 into the circulation pipe 602, and then the ethylene glycol aqueous solution is circulated. This can better insulate the vertical exhaust pipe 3. When the intake air temperature suddenly drops, the ethylene glycol aqueous solution itself can insulate the vertical exhaust pipe 3 to prevent the vertical exhaust pipe 3 from cracking under the temperature difference stress. During the air intake process, the micro oil pump 604 can be regularly turned on to pump the ethylene glycol aqueous solution in the ethylene glycol aqueous solution tank 603 into the circulation pipe 602, and then the ethylene glycol aqueous solution can be circulated, so that the vertical exhaust pipe 3 can be better insulated. When the air flow rate is low, the lifting cylinder 12 drives the extended skirt 1301 to move downward, and then drives the narrow air outlet pipe 13 to move downward, so that the narrow air outlet pipe 13 blocks the air outlet end of the air outlet expansion pipe 5, so that the air flow flows through the narrow air outlet pipe 13 instead of flowing through the air outlet expansion pipe 5. When the air flow rate increases, the lifting cylinder 12 is turned on to drive the extended skirt 1301 to move upward, and then drives the narrow air outlet pipe 13 to move upward. Part of the airflow flows through the air outlet expansion tube 5, and part of the airflow flows through the narrow air outlet pipe 13. As the narrow air outlet pipe 13 moves upward, the inner diameter of the air outlet channel increases gradually, thereby reducing the airflow velocity. When the generator stops, the connecting channel can be switched through the electric three-way valve 11, so that the side port of the electric three-way valve 11 is connected to the metal corrugated expansion joint 2, and the pulser back-blowing dust collector is turned on to generate a pulse cleaning airflow. The airflow enters the vertical exhaust pipe 3 from the metal corrugated expansion joint 2 to remove dust from the inner wall of the vertical exhaust pipe 3, thereby avoiding the original airflow in the vertical exhaust pipe 3 from slowing down due to the stop of the generator, thereby causing the dust in the airflow to be adsorbed in the vertical exhaust pipe 3.

[0023] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of the present invention.

Claims

1. A generator outlet exhaust pipe structure, comprising a connecting joint (1) and a vertical exhaust pipe (3), characterized in that: The bottom end of the connecting joint (1) is directly connected to the gas outlet of the generator, the connecting joint (1) and the vertical exhaust pipe (3) are connected via a metal corrugated expansion joint (2), a vibration damping component (4) is provided on the outer wall of the vertical exhaust pipe (3), and a temperature control component (6) is provided inside the vertical exhaust pipe (3); The vibration damping component (4) includes a fixed frame (401) and a sliding frame (402). The fixed frame (401) is connected to a fixed structure such as a wall. The sliding frame (402) is fixedly mounted on the outer wall of the vertical exhaust pipe (3). A connecting plate (403) is fixedly mounted at the center of the fixed frame (401). The connecting plate (403) is slidingly mounted on the middle section of the sliding frame (402). A fixing cylinder (404) is fixedly mounted on the top and bottom ends of the connecting plate (403). A thick spring (406) and a thin spring (408) are fixedly mounted on the inner wall of the fixing cylinder (404). The non-expandable length of the thin spring (408) is greater than the non-expandable length of the thick spring (406), a connecting ring (405) is fixedly mounted on the top end of the thick spring (406), a connecting disk (407) is fixedly mounted on the top end of the thin spring (408), an end of the connecting disk (407) away from the thin spring (408) is fixedly connected to the sliding frame (402), a diameter of the connecting disk (407) is the same as a diameter of the connecting ring (405), a damper (409) is fixedly mounted on the inner wall of the fixed cylinder (404), and a telescopic end of the damper (409) is fixedly connected to the connecting disk (407).

2. The generator outlet exhaust pipe structure according to claim 1, characterized in that: The vertical exhaust pipe (3) is made of austenitic stainless steel, a cavity is provided inside the vertical exhaust pipe (3), and a honeycomb metal skeleton (301) is provided in the cavity, and the inner layer of the vertical exhaust pipe (3) is coated with a nano-ceramic coating.

3. The generator outlet exhaust pipe structure according to claim 1, characterized in that: The vibration-damping components (4) are provided in two groups and are arranged symmetrically about the central axis of the vertical exhaust pipe (3). The top and bottom ends of the fixed frame (401) are both provided with protrusions, and the protrusions are located above and below the sliding frame (402).

4. The generator outlet exhaust pipe structure according to claim 1, characterized in that: A mounting seat (7) is fixedly provided on the connecting joint (1), and two mounting seats (7) are provided, wherein a pressure sensor (8) is fixedly installed in one of the mounting seats (7), and a temperature sensor (9) is fixedly installed in the other mounting seat (7), and the detection ends of the pressure sensor (8) and the temperature sensor (9) are both located on the inner side of the connecting joint (1).

5. The generator outlet exhaust pipe structure according to claim 1, characterized in that: A high-temperature resistant elastic pad (10) is fixedly mounted on the outer wall of the connecting disk (407) on one side facing the connecting ring (405), and the diameter of the high-temperature resistant elastic pad (10) is consistent with the diameter of the connecting disk (407).

6. The generator outlet exhaust pipe structure according to claim 1, characterized in that: The temperature control component (6) includes a hollow titanium alloy tube (601), a circulation tube (602), an ethylene glycol aqueous solution tank (603), and a micro oil pump (604). The hollow titanium alloy tube (601) is arranged in the inner cavity of the vertical exhaust pipe (3). The liquid outlet end of the ethylene glycol aqueous solution tank (603) is connected to the input end of the micro oil pump (604). The output end of the micro oil pump (604) is connected to the upper circulation tube (602). The upper circulation tube (602) is connected to the liquid inlet end of the hollow titanium alloy tube (601). The liquid inlet end of the ethylene glycol aqueous solution tank (603) is connected to the lower circulation tube (602). The lower circulation tube (602) is connected to the liquid outlet end of the hollow titanium alloy tube (601). Micro perforations are opened on the inner wall of the vertical exhaust pipe (3).

7. The generator outlet exhaust pipe structure according to claim 6, characterized in that: A heating device (605) is fixedly mounted on the outer wall of the ethylene glycol aqueous solution tank (603), and a heating end of the heating device (605) extends into the ethylene glycol aqueous solution tank (603).

8. The generator outlet exhaust pipe structure according to claim 1, characterized in that: An electric three-way valve (11) is provided between the connecting joint (1) and the metal bellows expansion joint (2); the bottom port of the electric three-way valve (11) is connected to the connecting joint (1); the top port of the electric three-way valve (11) is connected to the metal bellows expansion joint (2); the side port of the electric three-way valve (11) is connected to the output end of the pulser back-blowing dust collector through a pipeline; and a spiral guide groove (302) is provided on the inner wall of the vertical exhaust pipe (3).

9. The generator outlet exhaust pipe structure according to claim 1, characterized in that: The top end of the vertical exhaust pipe (3) is connected to an air outlet expansion pipe (5), and the air outlet expansion pipe (5) is composed of three sections: a connecting section (501), a trumpet section (502), and an expansion section (503).

10. The generator outlet exhaust pipe structure according to claim 9, characterized in that: A narrow air outlet pipe (13) is slidably provided inside the air outlet expansion pipe (5), the outer diameter of the narrow air outlet pipe (13) being smaller than the inner diameter of the air outlet expansion pipe (5), and an integrally formed extended skirt (1301) being provided on the top of the narrow air outlet pipe (13), the diameter of the extended skirt (1301) being larger than the inner diameter of the air outlet expansion pipe (5), and the extended skirt (1301) being telescopically connected to the sliding frame (402) via a lifting oil cylinder (12).

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