CN206972342U - A kind of nuclear power generating sets muffler - Google Patents

Abstract

The utility model discloses a kind of nuclear power generating sets muffler, including noise elimination cylinder, connecting tube, exhaust outlet and the multistage muffler body and sound absorber being arranged in the silencing pot body, the connecting tube is arranged at the inside of the noise elimination cylinder and stretches out the bottom of noise elimination cylinder, the multistage muffler body is arranged at around the connecting tube, and the multistage muffler body includes the polylith muffler plate being arranged side by side and the upper mounted plate, the bottom plate that are arranged at the top and bottom of the muffler plate；The exhaust outlet is arranged at the side at the top of the noise elimination cylinder, and the sound absorber is arranged in the exhaust outlet；End socket is provided with the top of the connecting tube；Using a kind of nuclear power generating sets muffler provided by the utility model, caused noise, excellent noise reduction effect in exhaust process are greatly reduced, disclosure satisfy that the noise reduction standard of nuclear power system, reduces noise pollution.

Description

A silencer for a nuclear power unit

technical field

The utility model relates to a muffler, in particular to a muffler for a nuclear power unit.

Background technique

The muffler is a device that prevents sound transmission and allows airflow to pass through, and is an important measure to eliminate aerodynamic noise. The muffler is installed on the air flow channel of aerodynamic equipment (such as blower, air compressor, boiler exhaust, generator, water pump and other equipment with high exhaust noise) or in the intake and exhaust system to reduce noise. device.

With the development of my country's nuclear power industry, nuclear power accompanies our lives and reduces human dependence on coal and other non-renewable energy sources. In the process of nuclear power application, due to its complex system, and the protection level and execution standards are higher than general standards, and Due to the large load during the operation of nuclear power plants, the exhaust noise is much higher than that of conventional equipment. Therefore, the commonly used silencers cannot meet the noise reduction requirements of nuclear power systems at all.

Utility model content

In order to solve the above technical problems, the purpose of this utility model is to provide a nuclear power unit muffler which can effectively reduce equipment operation noise and is suitable for nuclear power units.

In order to achieve the above object, the technical scheme of the utility model is as follows:

A nuclear power unit muffler, comprising a muffler cylinder, a connecting pipe, an exhaust port, and a multi-stage muffler and a sound absorber disposed in the muffler cylinder, the connecting pipe disposed in the muffler cylinder The inside of the body and protruding from the bottom of the muffler cylinder, the multi-stage muffler body is arranged around the connecting pipe, and the multi-stage muffler body includes a plurality of muffler plates arranged side by side and arranged on the The upper and lower fixing plates on the top and bottom of the muffler plate; the exhaust port is arranged on the side of the top of the muffler cylinder, and the sound absorbing body is arranged in the exhaust port; the connecting pipe The top is provided with a head.

Adopting the above-mentioned technical scheme, the beneficial effect of the technical scheme of the utility model is: due to the setting of the muffler cylinder, the connecting pipe, the exhaust port, the multi-stage muffler and the sound-absorbing body, when working, the exhaust pipe and the exhaust pipe of the nuclear power system The connecting pipes of the muffler are connected, and the airflow enters the muffler from the connecting pipe. Since the top of the connecting pipe is provided with a head, the airflow can only pass through the multiple mufflers on the side in order to reduce noise step by step. The interior of the muffler cylinder is cushioned, and then enters the sound-absorbing body to absorb the sound again, and finally is discharged from the exhaust port, which greatly reduces the noise generated during the exhaust process. The noise reduction effect is good, and it can meet the noise reduction standard of the nuclear power system. Reduce noise pollution; in addition, the setting of the upper and lower fixing plates can ensure the stability of multiple sound-absorbing plates during the working process, and improve the pressure bearing capacity and working performance.

On the basis of above-mentioned technical scheme, the utility model can also be improved as follows:

As a preferred solution, the multi-stage muffler is a five-stage muffler, which sequentially includes a first muffler plate, a second muffler plate, a third muffler plate, a fourth muffler plate and a fifth muffler plate , the fifth muffler plate communicates with the connecting pipe.

With the above-mentioned preferred scheme, the air flow flows around, and flows through the fifth, fourth, third, second, and first sound-absorbing plates in sequence, and performs noise reduction treatment step by step. , the noise reduction effect is better.

As a preferred solution, the distance between every two sound-absorbing panels is 45-55mm.

By adopting the above preferred solution, it is possible to ensure the smooth flow of the airflow and at the same time improve its own noise reduction effect.

As a preferred solution, the diameters of the silencing holes of the first silencing plate, the 2nd silencing plate, the 3rd silencing plate, the 4th silencing plate and the 5th silencing plate are set to increase in order.

With the above-mentioned preferred solution, the air flow enters each sound-absorbing plate from the connecting pipe. Since the sound-absorbing plate closest to the connecting pipe has the largest hole diameter, it decreases successively from the inside to the outside, so that the air velocity will not affect the normal flow due to a sudden decrease, and at the same time, the noise will not be affected. The overall noise reduction effect is better by performing a gradual weakening process.

As a preferred solution, the nuclear power unit muffler further includes a gas buffer chamber, the gas buffer chamber is located on the top of the muffler cylinder, and the outer shell of the gas buffer chamber is arranged in an arc.

With the above preferred solution, the arc-shaped gas buffer chamber is set so that the air flow can be buffered inside, and the sound absorbing body can fully contact the air flow, further improving the noise reduction effect.

As a preferred solution, the silencer of the nuclear power unit further includes a telescopic compensation pipe.

With the above preferred solution, due to the action of high temperature, the length of the connecting pipe is prone to telescopic displacement, and the setting of the telescopic compensation pipe can perform telescopic compensation for its length without causing damage to the connecting pipe.

As a preferred solution, the sound absorbing body is connected to the sound-absorbing cylinder and the gas buffer chamber through a support ring.

Adopting the above-mentioned preferred solution, the setting of the support ring can effectively support the muffler body, improve the pressure performance of the muffler body, and prolong the service life of the muffler.

As a preferred solution, the bottom of the sound-absorbing cylinder is provided with a lower head, and the cross-section of the lower head is semi-elliptical.

With the above preferred solution, the semi-elliptical arrangement of the lower head enables the airflow to be further buffered in the muffler cylinder to improve the noise reduction effect.

As a preferred solution, the connecting pipe is connected to the supporting ring through a fixing body.

By adopting the above preferred solution, the connection strength of the connecting pipe can be ensured, and no displacement will occur due to the flow of the airflow.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiment technology of the present invention, the accompanying drawings that need to be used in the technical description of the embodiment will be briefly introduced below. Obviously, the accompanying drawings in the following description are only the embodiment of the present invention. For some embodiments, those of ordinary skill in the art can also obtain other drawings based on these drawings without any creative effort.

Fig. 1 is a structural schematic diagram of a silencer for a nuclear power unit of the present invention.

Among them, 1. Silencer cylinder, 11. Lower head, 2. Connecting pipe, 21. Head, 22. Fixing body, 3. Exhaust port, 4. Sound absorbing body, 41. Support ring, 51. Upper Fixed plate, 52, lower fixed plate, 53, the first sound-absorbing plate, 54, the second sound-absorbing plate, 55, the third sound-absorbing plate, 56, the fourth sound-absorbing plate, 57, the fifth sound-absorbing plate, 6 , Gas buffer chamber, 7, telescopic compensation tube.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

In order to achieve the purpose of this utility model, as shown in Figure 1, in some embodiments of the silencer of the nuclear power unit of the present utility model, it includes a silencer cylinder 1, a connecting pipe 2, an exhaust port 3 and is arranged on the silencer cylinder The multi-stage muffler and sound-absorbing body 4 in the body 1, the connecting pipe 2 is arranged inside the muffler cylinder 1 and protrudes from the bottom of the muffler cylinder 1, and the multi-stage muffler is arranged around the connecting pipe 2, And the multi-stage muffler includes a plurality of mufflers arranged side by side and an upper fixing plate 51 and a lower fixing plate 52 arranged on the top and bottom of the muffler plates; the exhaust port 3 is arranged on the side of the top of the muffler cylinder 1 , the sound absorbing body is set in the exhaust port; the top of the connecting pipe is set with a head.

Adopting the above-mentioned technical scheme, the beneficial effect of the technical scheme of the utility model is: due to the setting of the muffler cylinder 1, the connecting pipe 2, the exhaust port 3, and the multi-stage muffler and sound-absorbing body 4, when working, the nuclear power system The exhaust pipe is connected to the connecting pipe 2 of the muffler, and the airflow enters the muffler from the connecting pipe 2. Since the top of the connecting pipe 2 is provided with a head 21, the airflow can only pass through the multiple mufflers on the side in sequence. After that, the noise is reduced step by step, entering the interior of the muffler cylinder 1 for buffering, and then entering the sound absorbing body 4 to absorb sound again, and finally discharged from the exhaust port 3, which greatly reduces the noise generated during the exhaust process, and the noise reduction effect Good, it can meet the noise reduction standard of the nuclear power system and reduce noise pollution; in addition, the setting of the upper fixed plate 51 and the lower fixed plate 52 can ensure the stability of multiple sound-absorbing plates in the working process, improve the pressure bearing capacity and work performance.

In order to further optimize the implementation effect of the utility model, as shown in Figure 1, in some other embodiments of the silencer of the nuclear power unit of the utility model, the multi-stage noise elimination body is a five-stage noise elimination body, which includes the first noise elimination body in turn The plate 53 , the second silencing plate 54 , the third silencing plate 55 , the fourth silencing plate 56 and the fifth silencing plate 57 , and the fifth silencing plate 57 communicates with the connecting pipe.

With the above-mentioned preferred scheme, the air flow flows around, and flows through the fifth sound-absorbing plate 57, the fourth sound-absorbing plate 56, the third sound-absorbing plate 55, the second sound-absorbing plate 54 and the first sound-absorbing plate 53, successively. The level of noise reduction processing is better.

In order to further optimize the implementation effect of the present utility model, as shown in Figure 1, in some other embodiments of the silencer of the nuclear power unit of the present utility model, the spacing between every two sound-absorbing plates is 45-55mm, such as 45mm, 50mm, or 55mm. Among them, the center-to-center distance of the holes on the sound-absorbing plate is 9-12mm, which has a better effect of absorbing noise.

By adopting the above preferred solution, it is possible to ensure the smooth flow of the airflow and at the same time improve its own noise reduction effect.

In order to further optimize the implementation effect of the present utility model, as shown in Figure 1, in some other embodiments of the silencer of the nuclear power unit of the present utility model, the first sound-absorbing plate 53, the second sound-absorbing plate 54, the third sound-absorbing plate The diameters of the silencing holes of the plate 55 , the fourth silencing plate 56 and the fifth silencing plate 57 are set to increase in order.

Adopting the above-mentioned preferred scheme, the air flow enters each sound-absorbing plate from the connecting pipe 2, and since the sound-absorbing plate closest to the connecting pipe 2 has the largest aperture, it decreases successively from the inside to the outside, so that the air velocity will not affect the normal flow due to a sudden decrease, and at the same time The noise is weakened step by step, and the overall noise reduction effect is better.

In order to further optimize the implementation effect of the present utility model, as shown in Figure 1, in some other embodiments of the silencer of the nuclear power unit of the present invention, the silencer of the nuclear power unit also includes a gas buffer chamber 6, and the gas buffer chamber 6 is located in the silencer The top of the cylinder body 1 and the outer shell of the gas buffer chamber 6 are arranged in an arc shape.

With the above preferred solution, the arc-shaped gas buffer chamber 6 is set so that the air flow can be buffered inside, and the sound absorbing body 4 can fully contact the air flow, further improving the noise reduction effect.

In order to further optimize the implementation effect of the utility model, as shown in FIG. 1 , in some other embodiments of the silencer of the nuclear power unit of the utility model, the silencer of the nuclear power unit also includes a telescopic compensation pipe 7 .

Adopting the above-mentioned preferred scheme, due to the action of high temperature, the length of the connecting pipe 2 is prone to telescopic displacement, and the setting of the telescopic compensation pipe 7 can perform telescopic compensation for its length without causing damage to the connecting pipe 2 .

In order to further optimize the implementation effect of the utility model, as shown in Figure 1, in some other embodiments of the silencer of the nuclear power unit of the utility model, the sound absorbing body 4 is connected to the muffler cylinder 1 and the gas buffer chamber through the support ring 41 6.

Adopting the above preferred solution, the arrangement of the supporting ring 41 can effectively support the muffler 4, improve the pressure performance of the muffler, and prolong the service life of the muffler.

In order to further optimize the implementation effect of the present utility model, as shown in Figure 1, in some other embodiments of the silencer of the nuclear power unit of the present utility model, the bottom of the muffler cylinder 1 is provided with a lower seal 11, and the lower seal 11 has a semi-elliptical cross section.

Adopting the above-mentioned preferred solution, the semi-elliptical arrangement of the lower head 11 enables the airflow to be further buffered in the muffler cylinder 1 to improve the noise reduction effect.

In order to further optimize the implementation effect of the present utility model, as shown in FIG. 1 , in some other embodiments of the silencer of the nuclear power unit of the present utility model, the connecting pipe 2 is connected to the supporting ring 41 through the fixing body 22 .

By adopting the above-mentioned preferred solution, the connection strength of the connecting pipe 2 can be ensured, and no displacement will occur due to the flow of the airflow.

The above description of the disclosed embodiments enables those skilled in the art to realize or use the utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims (9)

1. A nuclear power unit muffler, characterized in that it comprises a muffler cylinder, a connecting pipe, an exhaust port and a multi-stage muffler and a sound absorbing body arranged in the muffler cylinder, and the connecting pipe is provided with In the interior of the sound-absorbing cylinder and protruding from the bottom of the sound-absorbing cylinder, the multi-stage sound-absorbing body is arranged around the connecting pipe, and the multi-stage sound-absorbing body includes multiple sound-absorbing bodies arranged side by side plate and the upper and lower fixing plates on the top and bottom of the muffler plate; the exhaust port is set on the side of the top of the muffler cylinder, and the sound absorber In the mouth; the top of the connecting pipe is provided with a head. 2. The muffler for nuclear power units according to claim 1, wherein the multi-stage muffler is a five-stage muffler, which successively includes a first muffler plate, a second muffler plate, and a third muffler plate. plate, the fourth sound-absorbing plate and the fifth sound-absorbing plate, and the fifth sound-absorbing plate communicates with the connecting pipe. 3. The nuclear power unit muffler according to claim 1 or 2, characterized in that the distance between every two mufflers is 45-55mm. 4. The silencer of nuclear power unit according to claim 2, characterized in that, the first noise elimination plate, the second noise elimination plate, the third noise elimination plate, the fourth noise elimination plate and the fifth noise elimination plate The apertures of the muffler holes are set to increase sequentially. 5. The nuclear power unit muffler according to claim 4, characterized in that, the nuclear power unit muffler also includes a gas buffer chamber, the gas buffer chamber is located at the top of the muffler cylinder, and the gas buffer chamber The outer casing is arranged in an arc shape. 6. The nuclear power unit silencer according to claim 5, characterized in that, the nuclear power unit silencer further comprises a telescopic compensation pipe. 7. The muffler for nuclear power units according to claim 6, wherein the sound absorbing body is connected to the muffler cylinder and the gas buffer chamber through a support ring. 8 . The nuclear power unit muffler according to claim 1 or 7 , characterized in that, the bottom of the muffler cylinder is provided with a lower head, and the cross-section of the lower head is semi-elliptical. 9. The silencer of nuclear power unit according to claim 7, characterized in that, the connecting pipe is connected to the support ring through a fixed body.