CN111561370A

CN111561370A - Tooth-shaped labyrinth passage silencer

Info

Publication number: CN111561370A
Application number: CN202010370395.XA
Authority: CN
Inventors: 苑伟静; 唐建华; 高合朋
Original assignee: Jinan Jimeile Power Supply Technology Co Ltd
Current assignee: Jinan Jimeile Power Supply Technology Co Ltd
Priority date: 2020-05-06
Filing date: 2020-05-06
Publication date: 2020-08-21

Abstract

The invention relates to a tooth-shaped labyrinth passage silencer, which is characterized in that: the upper shell plate (2) of the silencer, the lower shell plate (8), the front sealing plate (3) and the rear sealing plate (6) are welded to form a shell, the front sealing plate (3) and the rear sealing plate (6) are respectively provided with a smoke inlet pipe (1) and a smoke outlet pipe (4) in a penetrating mode, the tail ends of the smoke inlet pipe (1) and the smoke outlet pipe (4) are arranged in the shell, the tail ends of the smoke inlet pipe (1) and the smoke outlet pipe (4) are sealed blind ends, smoke inlet pipe small holes (7) and smoke outlet pipe small holes (5) are formed in the pipe wall of the smoke inlet pipe (1) and the smoke outlet pipe (4) respectively, small hole type silencing pipes are formed, and the upper shell plate (2) and the lower shell plate (8) are respectively provided with an upper trapezoidal concave-convex structure (9) and a lower trapezoidal concave. The invention solves the leakage problem of the common silencer, improves the reliability of the silencer, and is particularly suitable for the fields of small-sized silent generator sets and the like with higher requirements on the silencing performance and the reliability.

Description

Tooth-shaped labyrinth passage silencer

Technical Field

The invention belongs to the technical field of small-sized silent generator sets, and particularly relates to a tooth-shaped labyrinth passage silencer.

Background

In a noise reduction system of a silent generator set, a silencer plays an indispensable role, and the reliability of the silencer even determines whether the generator set can work normally. The exhaust smoke of the engine has the characteristics of high temperature, high pressure and strong impact, and the weld joint of the silencer is easy to crack to cause leakage failure. Therefore, it is necessary to develop a muffler with high reliability and few craters.

Disclosure of Invention

The invention aims to solve the problem that a silencer is easy to leak due to smoke exhaust impact of an engine, and provides a tooth-shaped labyrinth passage silencer. In order to achieve the purpose, the invention adopts the technical scheme that: the utility model provides a profile of tooth labyrinth passageway silencer, includes into tobacco pipe, upper shell plate, preceding shrouding, the pipe of discharging fume, back shrouding and lower shell plate, its characterized in that: the upper shell plate of this silencer, the lower shell plate, preceding shrouding and back shrouding become a casing through the welding, wear to adorn the welding respectively on preceding shrouding and the back shrouding and advance the tobacco pipe and discharge fume the pipe, the end of advancing the tobacco pipe and discharging fume the pipe all sets up in the casing, the end is confined cecum, it has into tobacco pipe aperture and discharge fume the pipe aperture to advance to open respectively on the pipe wall of tobacco pipe and discharge fume the pipe, constitute aperture formula noise elimination pipe, set up trapezoidal concave-convex structure and lower trapezoidal concave-convex structure on upper shell plate and the lower shell plate respectively, go up trapezoidal concave-convex structure and lower trapezoidal concave-convex structure and crisscross setting relatively, form profile of tooth labyrinth passageway, closely knit packing superfine glass cotton in the casing cavity.

The invention relates to a tooth-shaped labyrinth passage silencer, which is particularly suitable for the fields of small-sized silent generator sets and the like with higher requirements on the silencing performance and the reliability.

Drawings

FIG. 1 is a front view of a schematic of the structure of the present invention;

FIG. 2 is a cross-sectional view A-A of FIG. 1;

FIG. 3 is a schematic view of the construction of the upper shell plate of the present invention;

fig. 4 is a schematic structural view of the lower shell plate in the present invention.

In the figure, 1-smoke inlet pipe, 2-upper shell plate, 3-front sealing plate, 4-smoke outlet pipe, 5-smoke outlet pipe small hole, 6-rear sealing plate, 7-smoke inlet pipe small hole, 8-lower shell plate, 9-upper trapezoidal concave-convex structure, 10-lower trapezoidal concave-convex structure and 11-superfine glass wool.

Detailed Description

The invention is described in further detail below with reference to the drawings.

The utility model provides a profile of tooth labyrinth passageway silencer, includes into tobacco pipe 1, upper casing plate 2, preceding shrouding 3, discharge fume 4, back shrouding 6 and lower casing plate 8, its characterized in that: the upper shell plate 2 of this silencer, lower shell plate 8, preceding shrouding 3 becomes a casing through the welding with back shrouding 6, wear the welding respectively on preceding shrouding 3 and the back shrouding 6 to advance tobacco pipe 1 and discharge fume pipe 4, it all sets up in the casing to advance the end of tobacco pipe 1 and discharge fume pipe 4, the end is confined cecum, it has into tobacco pipe aperture 7 and discharge fume pipe aperture 5 to open respectively on the pipe wall of tobacco pipe 1 and discharge fume pipe 4, constitute aperture formula muffler pipe, be provided with trapezoidal concave-convex structure 9 and trapezoidal concave-convex structure 10 down on upper shell plate 2 and the lower shell plate 8 respectively, it sets up with trapezoidal concave-convex structure 10 down crisscross relatively to go up trapezoidal concave-convex structure 9, form profile of tooth labyrinth passageway, closely knit packing superfine glass cotton 11 in the casing cavity. The upper shell plate 2 and the upper trapezoidal concave-convex structure 9 on the upper shell plate 2 are integrally formed, and the lower shell plate 8 and the lower trapezoidal concave-convex structure 10 on the lower shell plate 8 are integrally formed.

The resistive silencing metal structure is formed by bending the upper and lower shell plates directly, so that the connection mode that the conventional resistive silencing metal structure is welded on the upper and lower shell plates is avoided, and the resistive silencing metal structure is integrally formed without any welding spots. The advantages are as follows: the upper and lower shell plates with poor rigidity are not drawn by an internal silencing metal structure under the conditions of expansion with heat and contraction with cold and the impact of engine smoke discharge, so that cracks are avoided, and the leakage problem of a common silencer can be solved; secondly, the bending-formed resistive silencing metal structure plays a role of a reinforcing rib, the rigidity of the upper shell plate and the lower shell plate is increased, and the reliability of the silencer is improved.

The working process of the invention is as follows: the smoke exhausted by the engine enters the silencer through the smoke inlet pipe 1, and when airflow passes through the smoke inlet pipe small holes 7, the frequency spectrum in the noise moves to high frequency or ultrahigh frequency, so that audible components in the frequency spectrum are obviously reduced, the interference and damage to people are reduced, and resistance silencing is performed; then, the airflow meanders along a tooth-shaped labyrinth passage formed by the upper trapezoidal concave-convex structure 9 and the lower trapezoidal concave-convex structure 10 and passes through the superfine glass wool in the process, part of sound energy is lost in the zigzag labyrinth passage, and part of sound energy is rubbed in pores of the superfine glass wool to be converted into heat energy to be dissipated so as to perform resistance noise elimination; finally, the airflow flows through the small holes 5 of the smoke exhaust pipe, and then is subjected to reactive noise elimination again and then is discharged out of the silencer.

Claims

1. The utility model provides a profile of tooth labyrinth passageway silencer, includes into tobacco pipe (1), epitheca board (2), preceding shrouding (3), tub (4), back shrouding (6) and time shell plate (8), its characterized in that of discharging fume: the upper shell plate (2) of the silencer, lower shell plate (8), front sealing plate (3) and rear sealing plate (6) are welded to form a shell, smoke inlet pipe (1) and smoke outlet pipe (4) are respectively welded on front sealing plate (3) and rear sealing plate (6), the tail ends of smoke inlet pipe (1) and smoke outlet pipe (4) are arranged in the shell, the tail ends are closed blind ends, smoke inlet pipe small holes (7) and smoke outlet pipe small holes (5) are respectively formed in the pipe walls of smoke inlet pipe (1) and smoke outlet pipe (4), small hole type silencing pipes are formed, upper shell plate (2) and lower shell plate (8) are respectively provided with upper trapezoidal concave-convex structures (9) and lower trapezoidal concave-convex structures (10), and upper trapezoidal concave-convex structures (9) and lower trapezoidal concave-convex structures (10) are relatively staggered, and a labyrinth tooth-shaped passage is formed.

2. The tooth labyrinth passage muffler as set forth in claim 1, wherein: the upper shell plate (2) and the upper trapezoidal concave-convex structure (9) on the upper shell plate (2) are integrally formed, and the lower shell plate (8) and the lower trapezoidal concave-convex structure (10) on the lower shell plate (8) are integrally formed.

3. The tooth labyrinth passage muffler as set forth in claim 1, wherein: the cavity of the shell is densely filled with superfine glass wool (11).