Generator exhaust gas treatment device

Abstract

This utility model applies to the field of generator sets and provides a generator set exhaust gas treatment device, including a central tube located at the central flue position of the exhaust stack and having several through holes on its wall, and a sound-absorbing cotton sleeve surrounding the central tube; the sound-absorbing cotton sleeve undergoes a predetermined deformation, and after deformation, the inner wall of the sound-absorbing cotton sleeve moves towards the central tube; each through hole is provided with a clearing part, and in normal condition, the clearing part is located on the side of the through hole away from the central tube axis; in the working state, the clearing part is pressed by the inner wall of the sound-absorbing cotton sleeve and moves towards the through hole and passes through its interior, thereby, the movable clearing part of this utility model clears the carbon and nitrogen oxides blocking the through holes by pressing, realizing the cleaning of the through holes and ensuring the noise reduction of the exhaust stack.

Description

Technical Field

[0001] This utility model relates to the field of generator sets, and in particular to a generator set exhaust gas treatment device. Background Technology

[0002] A diesel generator set is a power supply device that uses a diesel engine as the prime mover to drive a synchronous generator to generate electricity. It is a power generation device that starts quickly and is highly adaptable to various environments. However, regardless of whether it is a large or small diesel generator set, the exhaust system produces a lot of noise during operation. Therefore, silencers are usually installed inside the exhaust system to reduce the noise generated during the operation of the diesel generator set.

[0003] Existing silencing structures include labyrinth-type silencing structures (similar to the internal structure of a pistol silencer) and adsorption-type silencing structures (also called sound-absorbing cotton silencing structures, commonly used in motorcycle exhaust pipes), etc. When adsorption-type silencing structures are applied to generator exhaust pipes, the carbon and nitrogen oxides formed after diesel combustion easily clog the through holes on the middle tube. On the one hand, this prevents air pressure from entering the sound-absorbing cotton through the through holes, causing the sound-absorbing cotton to malfunction and affecting the noise reduction effect. On the other hand, since the air pressure is only released from inside the middle tube, the pressure at the air inlet of the exhaust pipe will be concentrated, which can easily lead to "barrel explosion".

[0004] In conclusion, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0005] To address the aforementioned deficiencies, the purpose of this utility model is to provide a generator exhaust gas treatment device that can use a movable unblocking part to press and clear carbon and nitrogen oxides blocked in the through holes, thereby cleaning the through holes and ensuring noise reduction of the exhaust pipe.

[0006] To achieve the above objectives, this utility model provides a generator set exhaust gas treatment device, including a central tube located at the central flue position of the exhaust stack and having several through holes on its wall, and a sound-absorbing cotton sleeve surrounding the central tube; the sound-absorbing cotton sleeve undergoes a predetermined deformation, and after deformation, the inner wall of the sound-absorbing cotton sleeve moves towards the central tube; a clearing part is provided for each of the through holes, and in normal condition, the clearing part is located on the side of the through hole away from the central tube axis; in the working state, the clearing part is pressed by the inner wall of the sound-absorbing cotton sleeve and moves towards the through hole and passes through its interior.

[0007] According to the generator exhaust gas treatment device of this utility model, the unblocking part is a circular plate structure, which is connected to the outer wall of the middle cylinder tube by a deformable support frame.

[0008] According to the generator exhaust gas treatment device of this utility model, the predetermined state of deformation is such that the sound-absorbing cotton sleeve rotates at least one set of cross sections around its own axis at a predetermined angle. After rotation, the guideline of the sound-absorbing cotton sleeve as a whole or part is tilted at a predetermined angle.

[0009] According to the generator exhaust gas treatment device of this utility model, the two sets of cross sections at the ends of the sound-absorbing cotton sleeve rotate in opposite directions by a predetermined angle.

[0010] According to the generator exhaust gas treatment device of this utility model, one end of the sound-absorbing cotton sleeve is fixed to the exhaust pipe, and the cross section of the other end is rotated by a predetermined angle.

[0011] According to the generator exhaust gas treatment device of this utility model, a certain cross section in the middle of the sound-absorbing cotton sleeve is rotated by a predetermined angle.

[0012] According to the generator exhaust gas treatment device of this utility model, a rotating disk that drives its movement is installed at the rotatable cross-sectional position; the rotating disk is rotatably installed on the inner wall of the exhaust pipe and is driven to rotate by a rotating disk drive assembly.

[0013] According to the generator set exhaust gas treatment device of this utility model, the rotating disk drive assembly is a magnetic block assembly, including a first magnetic block disposed on the rotating disk and a second magnetic block disposed on the inner wall of the exhaust pipe; at least one magnetic block is an electromagnetic block; by changing the direction of the current in the electromagnetic block, the first magnetic block and the second magnetic block are driven to attract or repel each other.

[0014] According to the generator exhaust gas treatment device of this utility model, the rotating disk has several ventilation holes on its surface.

[0015] According to the generator exhaust gas treatment device of this utility model, a spiral guide structure is provided between the rotating disk and the inner wall of the exhaust pipe, which cooperates to drive the rotating disk to move along the axis of the exhaust pipe when the rotating disk rotates; the spiral guide structure includes a spiral groove provided on the inner wall of the exhaust pipe and a protrusion provided on the outer circumferential surface of the rotating disk and placed in the spiral groove.

[0016] This utility model provides a generator set exhaust gas treatment device, including a central tube located at the central flue of the exhaust stack and having several through holes in its wall, and a sound-absorbing cotton sleeve surrounding the central tube. The central tube is connected to the exhaust port of the diesel generator set, and the sound-absorbing cotton sleeve contains glass fiber, etc. The noise reduction principle of the above structure is as follows (since this application does not optimize or improve the noise reduction function of the device, it is only briefly described here): the exhaust gas discharged from the exhaust port will excite air particles to vibrate due to air pressure, generating noise. When the exhaust gas enters the exhaust stack, some of it will enter the sound-absorbing cotton sleeve through the through holes. Since the sound-absorbing cotton sleeve contains noise-reducing materials such as glass fiber, these materials will resist the vibration of air particles, thus reducing noise. The noise-reduced exhaust gas then flows out through the through holes. The movable unblocking part of this utility model can be pressed to unblock the carbon and nitrogen oxides blocking the through holes, thus cleaning the through holes and ensuring the noise reduction work of the exhaust stack. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the installation of the exhaust pipe of this utility model; Figure 2 This is a schematic diagram of the external structure of the exhaust pipe of this utility model; Figure 3 This is a schematic diagram of the internal structure of this utility model; Figure 4 This is a diagram showing the initial state of the sound-absorbing cotton cover; Figure 5 This is a diagram showing the first deformation state of the sound-absorbing cotton cover; Figure 6 It is a three-dimensional view of the unblocking section and support frame on the middle cylinder tube; Figure 7 This is a diagram illustrating the working principle of the unblocking section; Figure 8 It is a structural diagram of the rotating disk, the vent holes on the rotating disk, and the first magnetic block; Figure 9 This is a diagram showing the second deformation state of the sound-absorbing cotton cover; In the diagram, 1-exhaust pipe, 2-middle cylinder pipe, 21-through hole, 22-dredging section, 23-support frame, 3-sound absorbing cotton sleeve, 4-rotating disk, 41-ventilation hole, 5-first magnetic block. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for explaining the present utility model and are not intended to limit the present utility model.

[0019] See Figure 1 , Figure 2 and Figure 3 This utility model provides a generator set exhaust gas treatment device, which includes a central tube 2 located at the central flue of an exhaust stack 1 and having several through holes 21 on its wall, and a sound-absorbing cotton sleeve 3 surrounding the central tube 2. The above structures (including the connection between the central tube 2, the sound-absorbing cotton sleeve 3, and the exhaust stack 1, and the specific structure of the sound-absorbing cotton sleeve 3) are all existing technologies. The central tube 2 is connected to the exhaust port of the diesel generator set, and the sound-absorbing cotton sleeve 3 contains glass fiber or similar materials.

[0020] The noise reduction principle of the above structure is as follows (since this application does not optimize or improve the noise reduction function of the equipment, it is only briefly described here): the exhaust gas discharged from the exhaust port will cause air particles to vibrate due to air pressure, thus generating noise. When the exhaust gas enters the exhaust pipe 1, some of the exhaust gas will enter the sound-absorbing cotton sleeve 3 through the through hole 21. Since the sound-absorbing cotton sleeve 3 contains noise-reducing materials such as glass fiber, these materials will resist the vibration of air particles, thereby reducing noise. The noise-reduced exhaust gas then flows out through the through hole 21.

[0021] See Figure 6 and Figure 7 Each of the through holes 21 is provided with a clearing part 22. Under normal conditions, the clearing part 22 is located on the side of the through hole 21 away from the axis of the middle tube 2. Specifically, in this embodiment, the clearing part 22 is a circular plate structure, which is connected to the outer wall of the middle tube 2 by a deformable support frame 23. Specifically, the material of the support frame 23 can be selected to achieve its deformation effect, such as copper or copper-related alloy materials (which have good metal strength and strong fatigue resistance while ensuring a certain deformation effect). The support frame 23 can be connected to the outer wall of the middle tube 2 and the clearing part 22 by welding or integral molding.

[0022] It should be noted that the unblocking part 22 in the above state has a predetermined gap with the exhaust pipe 1, forming a channel for the exhaust gas to pass through, so as to ensure that the exhaust gas enters the sound-absorbing cotton sleeve 3 through the channel for noise reduction.

[0023] The sound-absorbing cotton sleeve 3 undergoes a predetermined deformation. After deformation, the inner wall of the sound-absorbing cotton sleeve 3 moves towards the middle tube 2 (the inner wall of the sound-absorbing cotton sleeve 3 contracts). In the working state (cleaning state), the unblocking part 22 is pressed by the inner wall of the sound-absorbing cotton sleeve 3 and moves towards the through hole 21, passing through its interior. When the exhaust pipe 1 becomes clogged after prolonged use, it can be cleaned using the above structure. The specific cleaning process is as follows: the sound-absorbing cotton sleeve 3 undergoes a predetermined deformation, further driving the unblocking part 22 to move towards the through hole 21 and pass through its interior. The unblocking part 22 pushes the blockage into the middle cavity of the middle tube 2, so that the airflow can carry it away, achieving the effect of unblocking and discharging the blockage. After cleaning, the sound-absorbing cotton sleeve 3 returns to its original deformation state, and the unblocking part 22 returns to its original position under the elastic action of the support frame 23, ready for the next use.

[0024] See Figure 4 and Figure 5 In this embodiment, the predetermined deformation of the sound-absorbing cotton sleeve 3 involves at least one set of cross-sections rotating at a predetermined angle around its own axis. After rotation, the overall or partial alignment of the sound-absorbing cotton sleeve 3 is tilted at a predetermined angle. The deformation of the sound-absorbing cotton sleeve 3 drives the unblocking section 22, reducing the need for complex drive structures, minimizing equipment space occupation and investment costs. Furthermore, the sound-absorbing cotton sleeve 3 has good overall drivability, allowing for simultaneous drive of multiple unblocking sections 22. Specifically, in this embodiment, the two sets of cross-sections at the ends of the sound-absorbing cotton sleeve 3 rotate in opposite directions by a predetermined angle. This deformation is a uniform deformation of the entire sound-absorbing cotton sleeve 3, resulting in uniform overall shrinkage of the inner wall of the sound-absorbing cotton sleeve 3. Specifically, rotating disks 4 are fixedly installed at both ends of the sound-absorbing cotton sleeve 3. When the sound-absorbing cotton sleeve 3 deforms, the rotating disks 4 are driven by the rotating disk drive assembly to rotate in the opposite direction by a predetermined angle (10~15° is sufficient).

[0025] Furthermore, a spiral guide structure is provided between the rotating disk and the inner wall of the exhaust pipe to drive the rotating disk to move along the axis of the exhaust pipe when the rotating disk rotates; the spiral guide structure includes a spiral groove provided on the inner wall of the exhaust pipe and a protrusion provided on the outer circumferential surface of the rotating disk and placed in the spiral groove.

[0026] In the second embodiment of this application, one end of the sound-absorbing cotton sleeve 3 is fixedly connected to the exhaust pipe 1, and the cross-section of the other end is rotated by a predetermined angle. Specifically, a rotating disk 4 is fixedly installed on the movable end of the sound-absorbing cotton sleeve 3. When the sound-absorbing cotton sleeve 3 deforms, the rotating disk 4 is driven by the rotating disk drive assembly to rotate in the opposite direction by a predetermined angle (10~15° is sufficient).

[0027] See Figure 9In the third embodiment of this application, a certain cross section in the middle of the sound-absorbing cotton sleeve 3 is rotated by a predetermined angle. Specifically, both ends of the sound-absorbing cotton sleeve 3 can be fixed to the inner wall of the exhaust pipe 1, and a rotating disk 4 is installed at the middle cross section of the sound-absorbing cotton sleeve 3, which is driven by the rotating disk drive assembly to rotate in the opposite direction by a predetermined angle (10~15° is sufficient).

[0028] See Figure 8 Preferably, the rotating disk drive assembly is a magnetic block group, including a first magnetic block 5 disposed on the rotating disk 4 and a second magnetic block disposed on the inner wall of the exhaust pipe 1; at least one magnetic block is an electromagnetic block; by changing the direction of the current in the electromagnetic block, the first magnetic block 5 and the second magnetic block are driven to attract or repel each other. Specifically, in this embodiment, the second magnetic block disposed on the inner wall of the exhaust pipe 1 is an electromagnetic block, and the outer wall of the exhaust pipe 1 is provided with contacts for electrical connection, which can be connected to the battery of the generator set.

[0029] In addition, the rotating disk 4 is provided with several ventilation holes 41, through which exhaust gas passes through its interior, ensuring gas flow.

[0030] Of course, there may be other embodiments of this utility model. Without departing from the spirit and essence of this utility model, those skilled in the art can make various corresponding changes and modifications based on this utility model, but these corresponding changes and modifications should all fall within the protection scope of the appended claims of this utility model.

Claims

1. A generator set exhaust gas treatment device, characterized in that, It includes a central tube located at the central flue position of the exhaust stack and having several through holes on its wall, and a sound-absorbing cotton sleeve fitted around the central tube. The sound-absorbing cotton sleeve undergoes a predetermined deformation, and after deformation, the inner wall of the sound-absorbing cotton sleeve moves towards the middle tube. Each of the aforementioned through holes is provided with a clearing section. Under normal conditions, the clearing section is located on the side of the through hole away from the axis of the middle tube. Under working conditions, the clearing section is pressed by the inner wall of the sound-absorbing cotton sleeve and moves towards the through hole and passes through its interior.

2. The genset exhaust treatment device of claim 1, wherein, The unblocking section is a circular plate-shaped structure, which is connected to the outer wall of the middle cylinder through a deformable support frame.

3. The genset exhaust treatment device of claim 1, wherein, The predetermined deformation is such that the sound-absorbing cotton cover rotates at least one set of cross sections around its own axis at a predetermined angle. After the rotation, the overall or partial guideline of the sound-absorbing cotton cover is tilted at a predetermined angle.

4. The genset exhaust treatment device of claim 2, wherein, The two sets of cross sections at the ends of the sound-absorbing cotton sleeve rotate in opposite directions by a predetermined angle.

5. The genset exhaust treatment device of claim 2, wherein, One end of the sound-absorbing cotton sleeve is fixed to the exhaust pipe, and the cross-section of the other end is rotated by a predetermined angle.

6. The generator set exhaust gas treatment device according to claim 2, characterized in that, The sound-absorbing cotton cover has a certain cross section in the middle rotated by a predetermined angle.

7. The exhaust treatment device of any one of claims 3-6, wherein the exhaust treatment device is a generator set exhaust treatment device. A rotating disk is installed at the rotatable cross-sectional position to drive its movement; the rotating disk is rotatably mounted on the inner wall of the exhaust pipe and is driven to rotate by a rotating disk drive assembly.

8. The genset exhaust treatment device of claim 7, wherein, The rotating disk drive assembly is a magnetic block group, including a first magnetic block disposed on the rotating disk and a second magnetic block disposed on the inner wall of the exhaust pipe; at least one magnetic block is an electromagnetic block; by changing the direction of the current in the electromagnetic block, the first magnetic block and the second magnetic block are driven to attract or repel each other.

9. The genset exhaust treatment device of claim 7, wherein, The rotating disk has several ventilation holes on its surface.

10. The genset exhaust treatment device of claim 7, wherein, A spiral guide structure is provided between the rotating disk and the inner wall of the exhaust pipe to drive the rotating disk to move along the axis of the exhaust pipe when the rotating disk rotates. The spiral guide structure includes a spiral groove on the inner wall of the exhaust pipe and a protrusion on the outer circumference of the rotating disk and placed in the spiral groove.

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