Smoke exhaust pipe body for combined heat and power generation combustion boiler

Abstract

The utility model relates to the technical field of boiler smoke exhaust equipment, in particular to a smoke exhaust pipe body for a combined heat and power generation combustion boiler. According to the technical scheme, the smoke exhaust device comprises a smoke exhaust pipe and further comprises a bottom pipe installed at the bottom of the smoke exhaust pipe, and a scraping mechanism used for rapidly cleaning the inner wall of the smoke exhaust pipe is arranged in the bottom pipe; and the driving mechanism is used for enabling the scraping mechanism not to hinder the use of the smoke exhaust pipe after the scraping mechanism is not used. Through cooperation of the smoke exhaust pipe, the bottom pipe, the scraping mechanism, the driving mechanism and other structures, carbon deposition on the inner wall of the smoke exhaust pipe can be rapidly cleaned, the risk of pipeline corrosion can be effectively reduced, and the service life of the pipeline is prolonged. And meanwhile, the problems of pipeline blockage, incomplete combustion and the like can be reduced, the fault rate of boiler equipment is reduced, and the reliability and stability of the equipment are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of boiler smoke exhaust equipment, in particular to a smoke exhaust pipe body used for a cogeneration combustion boiler. Background Art

[0002] A combined heat and power combustion boiler is a device that generates heat energy by burning fuel and uses the heat energy to generate steam to drive a steam turbine to generate electricity. Compared with traditional power generation methods, a combined heat and power combustion boiler effectively utilizes waste heat, converting the high-temperature heat in the flue gas into steam or hot water through a waste heat boiler or a heat exchanger, thereby achieving dual output of heat energy and electricity. However, after long-term use, the exhaust pipe of a traditional boiler will condense into carbon deposits in the flue gas due to the ash and other impurities generated by the combustion of fuel. After the carbon deposits accumulate, chemical substances will form, which will lead to increased corrosion of the inner wall of the pipe. Pipeline corrosion will reduce the strength and durability of the pipeline, thereby increasing the risk of pipeline rupture or leakage, resulting in safety hazards when the boiler is in operation. Utility Model Content

[0003] The purpose of the utility model is to solve the problems existing in the background technology and to provide a smoke exhaust pipe body for a combined heat and power combustion boiler.

[0004] The technical solution of the utility model: a smoke exhaust pipe body for a cogeneration combustion boiler, comprising a smoke exhaust pipe, and also comprising: a bottom pipe installed at the bottom of the smoke exhaust pipe, the interior of the bottom pipe being provided with a scraping mechanism for quickly cleaning the inner wall of the smoke exhaust pipe; a driving mechanism for ensuring that the scraping mechanism does not hinder the use of the smoke exhaust pipe when not in use.

[0005] Optionally, the scraping mechanism includes a rotating block, the upper surface of the rotating block is fixedly connected to a rotating shaft, the upper part of the rotating shaft is fixedly connected to an upper pair of rotating seats distributed in a circular array, the rotating seats are rotatably connected to rotating rods, and each upper and lower pair of rotating rods is rotatably connected to a support rod at one end away from the rotating seat, and the support rod is fixedly connected to a cleaning scraper for resisting the inner wall of the smoke exhaust pipe on the side surface of the inner wall of the smoke exhaust pipe.

[0006] Optionally, the scraping mechanism also includes a fixed block fixedly connected to the rotating shaft and distributed in a circular array and corresponding to the rotating rod, and a return spring is fixedly connected to the fixed block, and one end of the return spring away from the fixed block is fixedly connected to the corresponding rotating rod.

[0007] Optionally, the driving mechanism includes a multi-stage cylinder connected to the bottom pipe, the piston rod of the multi-stage cylinder is fixedly connected to a support plate, the upper surface of the support plate is fixedly connected to a motor for rotating and cleaning the scraping mechanism in the smoke exhaust pipe, and the output shaft of the motor is fixedly connected to the lower surface of the rotating block.

[0008] Optionally, a rotating clamping hole is provided at the bottom of the smoke exhaust pipe for the rotating clamping block to be clamped in and unable to pass through.

[0009] Optionally, a blocking plate for blocking the rotating clamping hole is fixedly connected to the top end of the rotating shaft.

[0010] Optionally, a removal mechanism for cleaning carbon deposits cleaned by a scraping mechanism is provided at the bottom of the smoke exhaust pipe, and the removal mechanism includes a ash cleaning port provided at the bottom of the smoke exhaust pipe, and the interior of the ash cleaning port is rotatably connected to a rotating ash blocking door via a hinge, and a first connecting plate is fixedly connected to the rotating ash blocking door, and the outer wall of the smoke exhaust pipe is located on the ash cleaning port and a second connecting plate corresponding to the first connecting plate is fixedly connected, and a pair of mounting bolts for quick disassembly and assembly are provided on the first connecting plate and the second connecting plate.

[0011] Optionally, an observation window is provided on the bottom pipe, a transparent baffle is fixedly connected to the inside of the observation window, and an air inlet pipe for allowing smoke to enter the smoke exhaust pipe is provided at the bottom of the smoke exhaust pipe.

[0012] Compared with the prior art, the utility model has the following beneficial technical effects:

[0013] The utility model utilizes the cooperation of the exhaust pipe, bottom pipe, scraping mechanism and driving mechanism to quickly clean the carbon deposits on the inner wall of the exhaust pipe, which can not only effectively reduce the risk of pipeline corrosion and extend the service life of the pipeline, but also reduce the occurrence of pipeline blockage and incomplete combustion, reduce the failure rate of boiler equipment, and improve the reliability and stability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A schematic structural diagram of a smoke exhaust pipe body for a combined heat and power combustion boiler according to the utility model is given;

[0015] Figure 2 for Figure 1 The enlarged schematic diagram of point A in the middle;

[0016] Figure 3 for Figure 1 Schematic diagram of some structures;

[0017] Figure 4 for Figure 3 The enlarged schematic diagram of point B in the middle;

[0018] Figure 5 for Figure 2 Schematic diagram of the cross-sectional structure of the middle exhaust pipe and the air intake pipe;

[0019] Figure 6 for Figure 5 Enlarged schematic diagram of point C in the middle.

[0020] Figure numerals: 1. exhaust pipe; 11. rotating ash blocking door; 12. first connecting plate; 13. second connecting plate; 14. mounting bolts; 15. ash cleaning port; 2. air inlet pipe; 3. bottom pipe; 31. observation window; 32. multi-stage cylinder; 33. support plate; 34. motor; 35. transparent baffle; 4. rotating clamp hole; 41. rotating clamp block; 42. rotating shaft; 43. rotating seat; 44. rotating rod; 45. push rod; 46. fixed block; 47. reset spring; 48. cleaning scraper; 49. blocking plate. DETAILED DESCRIPTION

[0021] The technical solution of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all of the embodiments.

[0022] The components of the embodiments of the present invention generally described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention.

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

[0024] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0025] It should be noted that the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] Example

[0028] like Figure 1-6 As shown, the utility model proposes a smoke exhaust pipe body for a cogeneration combustion boiler, including a smoke exhaust pipe 1, a rotating clamp hole 4 for a rotating clamp block 41 to be clamped in and cannot pass through is provided at the bottom of the smoke exhaust pipe 1, an air inlet pipe 2 for smoke to enter the smoke exhaust pipe 1 is provided at the bottom of the smoke exhaust pipe 1, and also includes: a bottom pipe 3 installed at the bottom of the smoke exhaust pipe 1, an observation window 31 is provided on the bottom pipe 3, and the function of the observation window 31 is to visually and quickly view the internal equipment of the bottom pipe 3. A transparent baffle 35 is fixedly connected to the inside of the observation window 31, and the material of the transparent baffle 35 is transparent engineering plastic. Engineering plastics include polycarbonate, polymethyl methacrylate, etc. These materials have high transparency and good heat resistance, chemical corrosion resistance and mechanical strength. Transparency, durability, safety and other factors need to be considered when selecting materials. A scraping mechanism for quickly cleaning the inner wall of the smoke exhaust pipe 1 is provided inside the bottom pipe 3; a driving mechanism is used to prevent the scraping mechanism from hindering the use of the smoke exhaust pipe 1 when not in use.

[0029] Furthermore, the scraping mechanism includes a rotating block 41, and the function of the rotating block 41 is to limit the distance that the scraping mechanism moves upward. A rotating shaft 42 is fixedly connected to the upper surface of the rotating block 41, and a blocking plate 49 for blocking the rotating clamp hole 4 is fixedly connected to the top of the rotating shaft 42. The function of the blocking plate 49 is to make the scraping mechanism retract into the inside of the bottom tube 3 and close the smoke exhaust pipe 1. A pair of upper and lower rotating seats 43 distributed in a circumferential array are fixedly connected to the upper part of the rotating shaft 42, and a rotating rod 44 is rotatably connected to the rotating seat 43. The end of each upper and lower pair of rotating rods 44 away from the rotating seat 43 is rotatably connected to a push rod 45, and the side surface of the push rod 45 close to the inner wall of the smoke exhaust pipe 1 is fixedly connected to a cleaning scraper 48 for pushing against the inner wall of the smoke exhaust pipe 1.

[0030] The scraping mechanism further includes a fixed block 46 fixedly connected to the rotating shaft 42 and distributed in a circumferential array and corresponding to the rotating rod 44. The function of the fixed block 46 is to provide a better support for the retracting direction of the resetting spring 47 when in use. A resetting spring 47 is fixedly connected to the fixed block 46. The function of the resetting spring 47 is to automatically open the push rod 45 on the scraping mechanism when it reaches the exhaust pipe 1, so that the push rod 45 drives the cleaning scraper 48 to press against the inner wall of the exhaust pipe 1. One end of the resetting spring 47 away from the fixed block 46 is fixedly connected to the corresponding rotating rod 44.

[0031] Secondly, the driving mechanism includes a multi-stage cylinder 32 connected to the bottom pipe 3. The multi-stage cylinder 32 generally refers to a pneumatic actuator having multiple pistons or cylinder units. This design can provide a greater output force or range of motion, and is suitable for applications that require higher work efficiency or greater power output. The piston rod of the multi-stage cylinder 32 is fixedly connected to a support plate 33, and the upper surface of the support plate 33 is fixedly connected to a motor 34 for rotating and cleaning the scraping mechanism in the exhaust pipe 1, and the output shaft of the motor 34 is fixedly connected to the lower surface of the rotating block 41.

[0032] Furthermore, a removal mechanism for cleaning the carbon deposits after the scraping mechanism has cleaned is provided at the bottom of the smoke exhaust pipe 1. The removal mechanism includes a ash cleaning port 15 provided at the bottom of the smoke exhaust pipe 1. The ash cleaning port 15 is used to facilitate the cleaning of the carbon deposits in the smoke exhaust pipe 1 after the carbon deposits are cleaned and dropped to the inner bottom wall of the smoke exhaust pipe 1. The interior of the ash cleaning port 15 is rotatably connected to a rotating ash blocking door 11 through a hinge, and a first connecting plate 12 is fixedly connected to the rotating ash blocking door 11. The outer wall of the smoke exhaust pipe 1 is located on the ash cleaning port 15 and is fixedly connected to a second connecting plate 13 corresponding to the first connecting plate 12. A pair of mounting bolts 14 for quick disassembly and assembly are provided on the first connecting plate 12 and the second connecting plate 13.

[0033] In this embodiment, when the cogeneration combustion boiler needs to use the smoke exhaust pipe body, it is only necessary to start the motor 34 on the support plate 33 in the bottom pipe 3. The output shaft of the motor 34 drives the rotating block 41 in the rotating clamp hole 4 to rotate, and the rotating block 41 drives the rotating shaft 42 to rotate. The rotating shaft 42 drives the rotating seat 43, the rotating rod 44, the support rod 45 and the cleaning scraper 48 on the support rod 45 in turn to scrape and clean the carbon deposits on the inner wall of the smoke exhaust pipe 1. The carbon deposits scraped and cleaned by the cleaning scraper 48 will fall onto the inner bottom wall of the smoke exhaust pipe 1, which is convenient and quick.

[0034] Furthermore, when the carbon deposits on the inner wall of the smoke exhaust pipe 1 are cleaned, it is only necessary to remove the mounting bolts 14 on the first connecting plate 12 and the second connecting plate 13, and then rotate the rotary dust blocking door 11 to disengage the dust cleaning port 15 at the bottom of the smoke exhaust pipe 1, and then use a brush or other tools to scrape the carbon deposits that have fallen from the smoke exhaust pipe 1 and clean them out of the smoke exhaust pipe 1. After cleaning, the rotary dust blocking door 11 can be rotated to close, and the above operation can be reversed, which will not be elaborated here.

[0035] Furthermore, when the smoke exhaust pipe 1 needs to be used, the multi-stage cylinder 32 in the bottom pipe 3 can be started, and the piston rod of the multi-stage cylinder 32 drives the support plate 33, the motor 34 and the rotating block 41 on the output shaft of the motor 34 to disengage from the rotating hole 4 in turn, and the rotating block 41 drives the scraping mechanism thereon through the elastic thrust of the return spring 47 on the fixed block 46, so that the rotating rod 44, the push rod 45 and the cleaning scraper 48 pass through the rotating hole 4 and then retract into the interior of the bottom pipe 3, and finally the blocking plate 49 at the top of the rotating shaft 42 blocks the rotating hole 4, so that the smoke exhaust pipe 1 can be used normally.

[0036] The preferred embodiments of the utility model of the above utility model are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A smoke exhaust pipe body for a combined heat and power combustion boiler, comprising a smoke exhaust pipe (1), characterized in that: Also includes: A bottom pipe (3) installed at the bottom of the smoke exhaust pipe (1), wherein a scraping mechanism for quickly cleaning the inner wall of the smoke exhaust pipe (1) is provided inside the bottom pipe (3); The driving mechanism is used to ensure that the scraping mechanism does not hinder the use of the smoke exhaust pipe (1) when not in use.

2. The smoke exhaust pipe body for a cogeneration combustion boiler according to claim 1, characterized in that: The scraping mechanism comprises a rotating block (41), the upper surface of the rotating block (41) is fixedly connected to a rotating shaft (42), the upper surface of the rotating shaft (42) is fixedly connected to a pair of upper and lower rotating seats (43) distributed in a circular array, the rotating seats (43) are rotatably connected to rotating rods (44), and the ends of each upper and lower pair of rotating rods (44) away from the rotating seats (43) are rotatably connected to a support rod (45), and the side surface of the support rod (45) close to the inner wall of the smoke exhaust pipe (1) is fixedly connected to a cleaning scraper (48) for supporting the inner wall of the smoke exhaust pipe (1).

3. The smoke exhaust pipe body for a cogeneration combustion boiler according to claim 1, characterized in that: The scraping mechanism further comprises fixed blocks (46) fixedly connected to the rotating shaft (42) and distributed in a circumferential array and corresponding to the rotating rod (44); a return spring (47) is fixedly connected to the fixed block (46); and one end of the return spring (47) away from the fixed block (46) is fixedly connected to the corresponding rotating rod (44).

4. The smoke exhaust pipe body for a cogeneration combustion boiler according to claim 1, characterized in that: The driving mechanism comprises a multi-stage cylinder (32) connected to the bottom pipe (3), the piston rod of the multi-stage cylinder (32) is fixedly connected to a support plate (33), the upper surface of the support plate (33) is fixedly connected to a motor (34) for rotating the scraping mechanism in the smoke exhaust pipe (1) for cleaning, and the output shaft of the motor (34) is fixedly connected to the lower surface of the rotating block (41).

5. The smoke exhaust pipe body for a combined heat and power combustion boiler according to claim 1, characterized in that: The bottom of the smoke exhaust pipe (1) is provided with a rotating clamping hole (4) for a rotating clamping block (41) to be clamped in and unable to pass through.

6. The smoke exhaust pipe body for a combined heat and power combustion boiler according to claim 2, characterized in that: A blocking plate (49) for blocking the rotating clamping hole (4) is fixedly connected to the top end of the rotating shaft (42).

7. The smoke exhaust pipe body for a combined heat and power combustion boiler according to claim 1, characterized in that: The bottom of the smoke exhaust pipe (1) is provided with a removal mechanism for cleaning the carbon deposits after being cleaned by the scraping mechanism, and the removal mechanism includes a cleaning port (15) provided at the bottom of the smoke exhaust pipe (1), the interior of the cleaning port (15) is rotatably connected to a rotating dust blocking door (11) via a hinge, a first connecting plate (12) is fixedly connected to the rotating dust blocking door (11), and the outer wall of the smoke exhaust pipe (1) is located on the cleaning port (15) and is fixedly connected to a second connecting plate (13) corresponding to the first connecting plate (12), and a pair of mounting bolts (14) for quick disassembly and assembly are provided on the first connecting plate (12) and the second connecting plate (13).

8. The smoke exhaust pipe body for a combined heat and power combustion boiler according to claim 1, characterized in that: An observation window (31) is provided on the bottom pipe (3), a transparent baffle (35) is fixedly connected to the inside of the observation window (31), and an air inlet pipe (2) for allowing smoke to enter the smoke exhaust pipe (1) is provided at the bottom of the smoke exhaust pipe (1).

Images