Air inlet and exhaust silencer of cogeneration unit

Abstract

The utility model discloses an air intake and exhaust silencer of a cogeneration unit, which relates to the technical field of cogeneration units and comprises a unit shell, an air intake pipe and an exhaust pipe are arranged on two sides of the unit shell respectively, and silencing cylinders are arranged at the ends of the air intake pipe and the exhaust pipe. Through the arrangement of the lead screw, the guide ring, the threaded block, the torsional spring, the clamping disc, the clamping hook, the gear ring and the gear, when the silencer is installed, a worker inserts the silencing barrel into the air inlet pipe or the exhaust pipe, then the worker rotates the gear ring, and the silencer is installed on the air inlet pipe or the exhaust pipe. The gear ring rotates to enable the gear to rotate, then the lead screw rotates, the threaded block drives the clamping hooks to move downwards, under the action of the guide ring, the multiple sets of clamping hooks can be folded inwards, when the clamping hooks move downwards to a certain degree, the clamping hooks can be tightly connected to the clamping disc in a lap joint mode, and then the silencing cylinder installation work is completed.

Description

TECHNICAL FIELD

[0001] The utility model relates to a heat and power cogeneration unit technical field, concretely is a kind of heat and power cogeneration unit's air intake and exhaust silencer. BACKGROUND

[0002] In the grain production and processing process, there will be a large amount of straw and grain shell, by fermentation to straw and grain shell can obtain natural gas, natural gas can be used by natural gas heat and power cogeneration unit, heat and power cogeneration unit refers to the production of electric energy, and utilize steam turbine generator to carry out heat supply production mode of steam, it is the process of producing electricity, heat energy, heat and power cogeneration unit has the characteristics such as fuel saving, pollution is low.

[0003] The air intake and exhaust silencer of existing heat and power cogeneration unit mostly adopts flange and pipeline to connect, flange needs multiple bolts to cooperate, it is very hard to install, and it is also more troublesome to replace silencer in later period. UTILITY MODEL CONTENTS

[0004] Therefore, the utility model provides a kind of air intake and exhaust silencer of heat and power cogeneration unit to solve the technical problem mentioned in the above background art.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of air intake and exhaust silencer of heat and power cogeneration unit, including unit shell, the two sides of the unit shell are respectively provided with inlet pipe and exhaust pipe, and the end of inlet pipe and exhaust pipe is equipped with silencer, the outer surface of inlet pipe and exhaust pipe is equipped with slide rail, connecting rod and mounting block, the one end of connecting rod is fixed with guide ring, the mounting block is installed with screw rod, the outer surface of slide rail is equipped with gear ring, the bottom of screw rod is fixed with gear, and the outer surface of screw rod is equipped with threaded block, the side of threaded block is movably connected with clamping hook, and clamping hook and threaded block are connected with torsion spring, the outer surface of silencer is equipped with clamping disc below.

[0006] Further, the inside of the silencer is respectively provided with soundproof board, porous pipe and sound-absorbing board, and the inside of the soundproof board is provided with airway.

[0007] By adopting the above technical scheme, the above structure makes the gas flow velocity smaller, and the noise generated in the flow process can be fully absorbed, which has good silencing effect.

[0008] Further, the gear ring and slide rail are in sliding fit.

[0009] By adopting the above technical scheme, the slide rail can limit the gear ring, so that the gear ring is always in meshing state with the gear.

[0010] Furthermore, multiple handles are fixed to the outer surface of the toothed ring.

[0011] By adopting the above technical solution, the handle makes it easier for workers to turn the gear ring and provides better leverage.

[0012] Furthermore, the airway is provided in several groups, and the airway groups are in a serpentine bend.

[0013] By adopting the above technical solution, the speed of airflow when it is discharged at the end of the pipe is reduced, which also reduces noise.

[0014] Furthermore, the sound-absorbing plate has several sets of honeycomb holes inside.

[0015] By adopting the above technical solution, sound can be significantly depleted of noise propagation energy through collisions within the honeycomb holes.

[0016] Furthermore, the gear is provided in multiple sets, and the gear ring meshes with multiple sets of gears.

[0017] By adopting the above technical solution, multiple sets of gears can rotate synchronously when the gear ring rotates.

[0018] Furthermore, the porosity of the sound-absorbing plate is 65%-75%.

[0019] By adopting the above technical solution, impurities in the airflow can be removed, and noise reduction can also be achieved.

[0020] In summary, the present invention has the following main advantages:

[0021] 1. This utility model, through the arrangement of a lead screw, guide ring, threaded block, torsion spring, snap-fit ​​disc, snap-fit ​​hook, gear ring, and gear, allows for easy installation of the muffler. The operator inserts the muffler into the intake or exhaust pipe, then rotates the gear ring. The rotation of the gear ring causes the gear to rotate, which in turn rotates the lead screw. This causes the threaded block to move the snap-fit ​​hook downwards. Under the action of the guide ring, multiple snap-fit ​​hooks close inwards. When the snap-fit ​​hooks reach a certain downward position, they tightly engage with the snap-fit ​​disc, thus completing the installation of the muffler. When disassembly or replacement is required, the operator rotates the gear ring in the opposite direction. This causes the gear to rotate the lead screw in the opposite direction, which in turn causes the threaded block to move the snap-fit ​​hooks upwards. Under the reset action of the torsion spring, multiple snap-fit ​​hooks open outwards, making it easy for the operator to remove the muffler. Installation is relatively simple, and disassembly is also very convenient.

[0022] 2. This utility model, through the arrangement of a porous tube, a sound-absorbing plate, sound-absorbing cotton, and a sound-insulating plate, allows gas to enter the sound-absorbing cylinder and then the porous tube. The noise of the airflow passes through the sound-absorbing plate, and the sound energy repeatedly collides within the honeycomb holes, thus initially reducing the noise. After the airflow enters the porous tube, the sound-absorbing cotton absorbs the noise, reducing the decibel level. Subsequently, the airflow enters the sound-insulating plate, where it collides multiple times again in the serpentine air passage, reducing the impact force of the airflow and lowering the sound energy, thereby achieving the purpose of noise reduction. Through multiple noise reduction and silencing methods, the practicality and performance of the silencing device are greatly improved. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the cross-sectional structure of the intake pipe and exhaust pipe of this utility model;

[0025] Figure 3 This is a schematic diagram of the lead screw structure of this utility model;

[0026] Figure 4 This is a schematic diagram of the porous tube structure of this utility model;

[0027] Figure 5 This utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0028] In the diagram: 1. Unit casing; 2. Intake pipe; 3. Exhaust pipe; 4. Silencer; 5. Silencer plate; 6. Perforated pipe; 7. Sound-absorbing cotton; 8. Sound insulation board; 9. Air duct; 10. Connecting rod; 11. Clip plate; 12. Mounting block; 13. Lead screw; 14. Threaded block; 15. Clip hook; 16. Torsion spring; 17. Guide ring; 18. Slide rail; 19. Gear; 20. Gear ring; 21. Handle. Detailed Implementation

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0030] The embodiments of this utility model will be described below based on its overall structure.

[0031] Example 1: An intake and exhaust silencing device for a combined heat and power unit, such as... Figures 1-5As shown, the unit includes a housing 1, with an air intake pipe 2 and an exhaust pipe 3 on both sides of the housing 1. Both the air intake pipe 2 and the exhaust pipe 3 have a muffler 4 at their ends. The outer surfaces of the air intake pipe 2 and the exhaust pipe 3 are provided with a slide rail 18, a connecting rod 10, and a mounting block 12. One end of the connecting rod 10 is fixed with a guide ring 17. A lead screw 13 is mounted on the mounting block 12. The outer surface of the slide rail 18 is provided with a toothed ring 20, which slides in conjunction with the slide rail 18. The slide rail 18 can limit the toothed ring 20, ensuring that the toothed ring 20 is always engaged with a gear 19. The bottom end of the lead screw 13 is fixed with a gear 19, and the outer surface of the lead screw 13 is provided with a threaded block 14. A snap hook 15 is movably connected to one side of the threaded block 14, and a torsion spring 16 connects the snap hook 15 and the threaded block 14. A snap plate 11 is provided below the outer surface of the muffler 4.

[0032] See Figure 1 , Figure 2 , Figure 3 and Figure 5 In the above embodiment, multiple handles 21 are fixed on the outer surface of the toothed ring 20. The handles 21 make it more convenient for the staff to rotate the toothed ring 20 and facilitate the application of force.

[0033] See Figure 1 , Figure 2 , Figure 3 and Figure 5 In the above embodiment, the gear 19 is provided in multiple sets, and the gear ring 20 meshes with the multiple sets of gears 19. When the gear ring 20 rotates, it can make the multiple sets of gears 19 rotate synchronously.

[0034] Example 2: To improve the noise reduction effect of the pipeline, Example 2 is an improvement on Example 1. (See attached document for details.) Figure 2 and Figure 4 The silencer 4 is provided with a sound insulation plate 8, a porous tube 6 and a sound-absorbing plate 5 inside, and the sound insulation plate 8 is provided with an air passage 9 inside. The inner wall of the silencer 4 is provided with sound-absorbing cotton 7. The above structure reduces the gas flow speed and can fully absorb the noise generated during the flow process, thus achieving a good sound-absorbing effect.

[0035] See Figure 2 In the above embodiments, the air passage 9 is provided in several groups, and the several groups of air passage 9 are in a serpentine bend, which reduces the speed of airflow when it is discharged at the end of the pipe and also reduces noise.

[0036] See Figure 2 In the above embodiment, the sound-absorbing plate 5 has several sets of honeycomb holes inside. The sound collidees in the honeycomb holes, which can greatly consume the propagation energy of the noise.

[0037] See Figure 2In the above embodiment, the porosity of the sound-absorbing plate 5 is 65%-75%, which can both remove impurities in the airflow and reduce noise.

[0038] The implementation principle of this utility model is as follows: When the unit is working, the gas enters the silencer 4 and then the porous pipe 6. The noise of the airflow passes through the silencer plate 5, and the sound energy collides repeatedly in the honeycomb holes, thus initially reducing the noise. After the airflow enters the porous pipe 6, the sound-absorbing cotton 7 absorbs the noise, reducing the decibel level. Then the airflow enters the sound insulation plate 8, and the airflow collides multiple times again in the serpentine air passage 9, reducing the impact force of the airflow and also reducing the sound energy, thereby achieving the purpose of noise reduction. When installing the silencer device, the operator inserts the silencer 4 into the air intake pipe 2 or the exhaust pipe 3, and then the operator rotates the gear ring 2. 0. The rotation of the gear ring 20 causes the gear 19 to rotate, which in turn causes the lead screw 13 to rotate. This causes the threaded block 14 to drive the snap hooks 15 to move downward. Under the action of the guide ring 17, multiple sets of snap hooks 15 will close inward. When the snap hooks 15 are lowered to a certain position, they will tightly engage with the snap plate 11, thus completing the installation of the muffler 4. When disassembly and replacement are required, the operator rotates the gear ring 20 in the opposite direction. The gear 19 causes the lead screw 13 to rotate in the opposite direction, which causes the threaded block 14 to drive the snap hooks 15 to move upward. Under the reset action of the torsion spring 16, multiple sets of snap hooks 15 will open outward, making it easier for the operator to remove the muffler 4.

[0039] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A noise reduction device for the intake and exhaust of a combined heat and power (CHP) unit, comprising a unit casing (1), characterized in that: The unit casing (1) is provided with an air intake pipe (2) and an exhaust pipe (3) on both sides, and the ends of the air intake pipe (2) and the exhaust pipe (3) are provided with a muffler (4). The outer surfaces of the air intake pipe (2) and the exhaust pipe (3) are provided with a slide rail (18), a connecting rod (10) and a mounting block (12). One end of the connecting rod (10) is fixed with a guide ring (17). A lead screw (13) is installed on the mounting block (12). The outer surface of the slide rail (18) is provided with a toothed ring (20). The bottom end of the lead screw (13) is fixed with a gear (19). The outer surface of the lead screw (13) is provided with a threaded block (14). A snap hook (15) is movably connected to one side of the threaded block (14). A torsion spring (16) is connected between the snap hook (15) and the threaded block (14). A snap plate (11) is provided below the outer surface of the muffler (4).

2. The intake and exhaust silencing device for a combined heat and power unit according to claim 1, characterized in that: The silencer (4) is provided with a sound insulation plate (8), a porous tube (6) and a silencer plate (5) inside, and the sound insulation plate (8) is provided with an air passage (9) inside, and the inner wall of the silencer (4) is provided with sound-absorbing cotton (7).

3. The intake and exhaust silencing device for a combined heat and power unit according to claim 1, characterized in that: The toothed ring (20) is in sliding engagement with the slide rail (18).

4. The intake and exhaust silencing device for a combined heat and power unit according to claim 1, characterized in that: Multiple handles (21) are fixed to the outer surface of the toothed ring (20).

5. The intake and exhaust silencing device for a combined heat and power unit according to claim 2, characterized in that: The airway (9) is provided in several groups, and the airway (9) is in a serpentine bend.

6. The intake and exhaust silencing device for a combined heat and power unit according to claim 2, characterized in that: The sound-absorbing plate (5) has several sets of honeycomb holes inside.

7. The intake and exhaust silencing device for a combined heat and power unit according to claim 1, characterized in that: The gear (19) is provided in multiple sets, and the gear ring (20) meshes with multiple sets of gears (19).

8. The intake and exhaust silencing device for a combined heat and power unit according to claim 6, characterized in that: The porosity of the sound-absorbing plate (5) is 65%-75%.

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