CN210196755U

CN210196755U - Boiler blowpipe silencer

Info

Publication number: CN210196755U
Application number: CN201920999566.8U
Authority: CN
Inventors: Huaxia Pan; 潘华夏; Anyuan Ji; 吉安元; Yuanfeng Tian; 田远凤
Original assignee: Lianyungang Tiger Electric Power Equipment Co Ltd
Current assignee: Lianyungang Tiger Electric Power Equipment Co Ltd
Priority date: 2019-06-30
Filing date: 2019-06-30
Publication date: 2020-03-27
Anticipated expiration: 2029-06-30

Abstract

The utility model provides a boiler blowpipe muffler, which comprises an outer shell, wherein the outer shell consists of an air inlet straight pipe section and an exhaust elbow, a drain pipe is arranged on the outer shell of the air inlet straight pipe section, the air inlet end of the air inlet straight pipe section is set as a closed end, and the air outlet end of the air inlet straight pipe section is set as an open end communicated with the exhaust elbow; the exhaust elbow is internally provided with a plurality of flow guide muffling pipes which are arranged along the tangential direction of the exhaust elbow, and one end of each flow guide muffling pipe close to the air inlet straight pipe section of the outer shell is provided with a flow guide arc for preventing secondary noise. The utility model has reasonable design and good noise elimination effect, and can perform noise elimination treatment on the inlet air by utilizing the primary noise elimination pipe arranged inside the air straight pipe section and the secondary noise elimination pipe sleeved outside the primary noise elimination pipe; the inner wall sound absorbing layer arranged on the inner wall of the air inlet straight pipe section of the outer shell is utilized, so that the noise generated by collision of air inlet and the inner wall of the outer shell can be avoided; the diversion silencing pipe arranged in the exhaust elbow can realize diversion and deep silencing when being exhausted.

Description

Boiler blowpipe silencer

Technical Field

The utility model relates to an equipment field of making an uproar falls in the boiler, more specifically says, relates to a boiler blowpipe silencer.

Background

With the rapid development of the power industry, the boiler units of the power station are continuously increased, before the thermal generator units are installed or repaired in a recovery mode and put into operation, in order to ensure the safe and economic operation of the units, steam blowing pipes are needed to remove the rust, welding slag, other impurities and other industrial wastes in the pipelines of the superheater and reheater systems, and in order to thoroughly remove the impurities in the pipelines, the blowing times are dozens of times or even hundreds of times and are continued for several days or longer. During blowing, strong steam turbulence is sprayed out of the pipe orifice to impact surrounding static air, so that violent gas disturbance near the nozzle is caused to generate noise, and the generated noise has the characteristics of high intensity, wide frequency spectrum, large pollution hazard range, high-temperature and high-speed airflow emission and the like. The boiler blow pipe silencer is an effective silencer specially used for reducing and controlling noise, and can also be used for reducing high-intensity noise generated by high-pressure, high-temperature and high-speed exhaust emptying in industrial departments such as chemical industry, petroleum, metallurgy, electric power and the like.

Disclosure of Invention

The utility model aims to solve the technical problem that to prior art not enough, provide a boiler blowpipe silencer of reasonable in design, good noise reduction effect, concrete scheme is as follows:

the utility model relates to a boiler blowpipe silencer, its characteristics are: the silencer comprises an outer shell, wherein the outer shell is composed of an air inlet straight pipe section and an exhaust elbow, a drain pipe is arranged on the outer shell of the air inlet straight pipe section, the air inlet end of the air inlet straight pipe section is arranged to be a closed end, the air outlet end of the air inlet straight pipe section is arranged to be an open end communicated with the exhaust elbow, a first-stage silencing pipe coaxially arranged with the air inlet straight pipe section is arranged inside the air inlet straight pipe section, the first-stage silencing pipe is sequentially composed of a non-porous section, a porous silencing section and a slag discharge closed section along the air inlet direction, the air inlet end of the non-porous section of the first-stage silencing pipe extends out of the outer shell, a plurality of first-stage silencing holes are formed in the first-stage silencing pipe of the porous silencing section, a second-stage silencing pipe sleeved outside the first-stage silencing pipe is arranged between the first-stage silencing pipe and the outer shell, the second-stage silencing pipe is coaxially arranged with the first-, an inner wall sound absorbing layer is arranged on the inner wall of the air inlet straight pipe section of the outer shell; the exhaust pipe is internally provided with a plurality of flow guide muffling pipes which are arranged along the tangential direction of the exhaust pipe, one end of each flow guide muffling pipe, which is close to the air inlet straight pipe section of the outer shell, is provided with a flow guide arc for preventing secondary noise, each flow guide muffling pipe comprises a tubular muffling pore plate, a plurality of muffling through holes are formed in the outer wall of the tubular muffling pore plate, glass for sound absorption is arranged inside the tubular muffling pore plate, muffling fiber cloth is arranged between the glass sound absorption cotton and the inner wall of the tubular muffling pore plate, and stainless steel wire cotton sleeved outside the glass sound absorption cotton is arranged between the muffling fiber cloth and the glass sound absorption.

The utility model discloses the technical problem that will solve can also further realize through following technical scheme, the straight tube section that admits air meets as an organic wholely with the exhaust elbow is level and smooth.

The utility model discloses the technical problem that will solve can also further realize through following technical scheme, is equipped with the one-level muffler pipe support frame that supports the one-level muffler pipe and is used inside the shell body of the straight tube section that admits air.

The utility model discloses the technical problem that solve can also further realize through following technical scheme, be equipped with one-level muffler pipe strengthening rib between the end that stretches out of the non-porous section of one-level muffler pipe and the shell body.

The technical problem to be solved by the utility model can be further realized by the following technical proposal, and the slag discharge pipe which extends out of the shell body is arranged on the primary silencing pipe of the slag discharge closed section.

The utility model discloses the technical problem that will solve can also further realize through following technical scheme, the diameter in one-level hole of eliminating noise is greater than the diameter in second grade hole of eliminating noise.

The utility model discloses the technical problem that will solve can also further realize through following technical scheme, is equipped with the base in the bottom of shell body.

Compared with the prior art, the beneficial effects of the utility model are that: the design is reasonable, the silencing effect is good, the primary silencing pipe arranged inside the air straight pipe section and the secondary silencing pipe sleeved outside the primary silencing pipe are utilized, and the air inlet can be subjected to silencing treatment; the inner wall sound absorbing layer arranged on the inner wall of the air inlet straight pipe section of the outer shell is utilized, so that the noise generated by collision of air inlet and the inner wall of the outer shell can be avoided; the diversion silencing pipe arranged in the exhaust elbow can realize diversion and deep silencing when being exhausted.

Drawings

In order to illustrate the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings required in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a partially enlarged view of a portion a of fig. 1.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1 and 2, the boiler blowpipe muffler provided by this embodiment includes an outer casing 6, the outer casing 6 is composed of an air inlet straight pipe section and an exhaust elbow, a drain pipe 13 is provided on the outer casing 6 of the air inlet straight pipe section, an air inlet end of the air inlet straight pipe section is provided as a closed end, an air outlet end of the air inlet straight pipe section is provided as an open end communicated with the exhaust elbow, a first-stage muffling pipe 1 coaxially provided with the air inlet straight pipe section is provided inside the air inlet straight pipe section, the first-stage muffling pipe 1 is sequentially composed of a non-porous section, a porous muffling section and a slag discharge closed section 8 along an air inlet direction, an air inlet end of the non-porous section of the first-stage muffling pipe extends out of the outer casing, a plurality of first-stage muffling holes 3 are provided on the first-stage muffling pipe of the porous muffling section, a second-stage muffling pipe 5 sleeved outside the first-stage muffling pipe is provided between the first-stage muffling pipe, a plurality of secondary silencing holes 4 are formed in the secondary silencing pipe 5, and an inner wall sound absorbing layer 7 is arranged on the inner wall of the air inlet straight pipe section of the outer shell; the exhaust elbow is internally provided with a plurality of flow guide muffling pipes 10 arranged along the tangential direction of the exhaust elbow, one end of each flow guide muffling pipe 10 close to the air inlet straight pipe section of the outer shell is provided with a flow guide arc for preventing secondary noise, each flow guide muffling pipe comprises a tubular muffling pore plate 14, the outer wall of each tubular muffling pore plate 14 is provided with a plurality of muffling through holes, glass muffling cotton 17 for sound absorption is arranged inside each tubular muffling pore plate, muffling fiber cloth 15 is arranged between the glass muffling cotton 17 and the inner wall of the tubular muffling pore plate 14, and stainless steel wire cotton 16 sleeved outside the glass muffling cotton is arranged between the muffling fiber cloth 15 and the glass muffling cotton 17. The exhaust elbow is an exhaust elbow with the radian of 45 degrees, and the wind resistance of the exhaust elbow with the radian of 45 degrees is the minimum; a plurality of primary silencing holes are uniformly distributed along the axial direction of the primary silencing pipe, and a plurality of secondary silencing holes are uniformly distributed along the axial direction of the secondary silencing pipe; the secondary muffler pipe and the primary muffler pipe are fixedly arranged, the secondary muffler pipe can be regarded as an outer sleeve, the primary muffler pipe can be regarded as an inner sleeve, and meanwhile, the intake air is muffled; the slag discharging closed section of the primary muffler pipe is a non-porous slag collecting area, and industrial waste is collected and discharged along the slag discharging pipe 12; the flow guide silencing pipe is arranged inside the outer shell through a flow guide silencing pipe fixing frame, and a flow guide circular arc of the flow guide silencing pipe is fixedly connected with the flow guide silencing pipe fixing frame; the inner wall sound absorption layer is provided with sound absorption fiber cloth on one side close to the inner wall of the straight pipe section, a sound absorption and noise elimination pore plate is arranged on one side far away from the inner wall of the straight pipe section, sound absorption stainless steel silk floss is arranged on the inner wall of the sound absorption and noise elimination pore plate, and sound absorption layer glass sound absorption cotton is filled between the sound absorption stainless steel silk floss and the sound absorption fiber cloth.

The air inlet straight pipe section and the exhaust elbow are smoothly connected into a whole. The air inlet straight pipe section and the exhaust elbow are integrally arranged. A first-stage silencing pipe support frame 9 for supporting the first-stage silencing pipe is arranged in the outer shell of the air inlet straight pipe section. The first-stage muffler pipe support frame is arranged inside the outer shell, the connection part of the air inlet straight pipe section and the exhaust elbow is arranged, and a first-stage muffler pipe reinforcing rib 2 is arranged between the extending end of the non-hole section of the first-stage muffler pipe and the outer shell. The two ends of the primary silencing pipe are respectively fixed by matching the primary silencing pipe reinforcing ribs 2 with the primary silencing pipe support frames 9, so that the primary silencing pipe support has a good anti-vibration effect, and the coaxiality of the primary silencing pipe and the air inlet straight pipe section of the outer shell is guaranteed. A slag discharge pipe 13 extending outwards from the outer shell is arranged on the first-stage muffling pipe of the slag discharge closed section. The diameter of the first-stage silencing hole is larger than that of the second-stage silencing hole. The bottom of the outer shell is provided with two bases 11, the two bases are arranged in the front and at the back of the air inlet direction, one base is fixedly connected with the air inlet straight pipe section of the outer shell, and the other base is fixedly connected with the exhaust elbow of the outer shell.

Claims

1. A boiler blowpipe muffler characterized in that: the silencer comprises an outer shell, wherein the outer shell is composed of an air inlet straight pipe section and an exhaust elbow, a drain pipe is arranged on the outer shell of the air inlet straight pipe section, the air inlet end of the air inlet straight pipe section is arranged to be a closed end, the air outlet end of the air inlet straight pipe section is arranged to be an open end communicated with the exhaust elbow, a first-stage silencing pipe coaxially arranged with the air inlet straight pipe section is arranged inside the air inlet straight pipe section, the first-stage silencing pipe is sequentially composed of a non-porous section, a porous silencing section and a slag discharge closed section along the air inlet direction, the air inlet end of the non-porous section of the first-stage silencing pipe extends out of the outer shell, a plurality of first-stage silencing holes are formed in the first-stage silencing pipe of the porous silencing section, a second-stage silencing pipe sleeved outside the first-stage silencing pipe is arranged between the first-stage silencing pipe and the outer shell, the second-stage silencing pipe is coaxially arranged with the first-, an inner wall sound absorbing layer is arranged on the inner wall of the air inlet straight pipe section of the outer shell; the exhaust pipe is internally provided with a plurality of flow guide muffling pipes which are arranged along the tangential direction of the exhaust pipe, one end of each flow guide muffling pipe, which is close to the air inlet straight pipe section of the outer shell, is provided with a flow guide arc for preventing secondary noise, each flow guide muffling pipe comprises a tubular muffling pore plate, a plurality of muffling through holes are formed in the outer wall of the tubular muffling pore plate, glass for sound absorption is arranged inside the tubular muffling pore plate, muffling fiber cloth is arranged between the glass sound absorption cotton and the inner wall of the tubular muffling pore plate, and stainless steel wire cotton sleeved outside the glass sound absorption cotton is arranged between the muffling fiber cloth and the glass sound absorption.

2. The boiler blowpipe muffler of claim 1, wherein: the air inlet straight pipe section and the exhaust elbow are smoothly connected into a whole.

3. The boiler blowpipe muffler of claim 1, wherein: a first-stage silencing pipe support frame for supporting the first-stage silencing pipe is arranged in the outer shell of the air inlet straight pipe section.

4. The boiler blowpipe muffler of claim 1, wherein: and a primary silencing pipe reinforcing rib is arranged between the extending end of the primary silencing pipe non-hole section and the outer shell.

5. The boiler blowpipe muffler of claim 1, wherein: the first-stage silencing pipe of the slag discharging closed section is provided with a slag discharging pipe which extends outwards out of the outer shell.

6. The boiler blowpipe muffler of claim 1, wherein: the diameter of the first-stage silencing hole is larger than that of the second-stage silencing hole.

7. The boiler blowpipe muffler of claim 1, wherein: the bottom of the outer shell is provided with a base.