CN212563411U - Small-size gas turbine exhaust noise eliminator - Google Patents

Abstract

The utility model relates to a small-size gas turbine exhaust muffler device belongs to the gas turbine noise reduction technical field, which comprises an outer shell, the fixed mounting has the inner bag in the shell, the shell endotheca is equipped with the first rock wool of inhaling sound rather than fixed connection, the first rock wool endotheca of inhaling sound is equipped with the first galvanized perforated pipe rather than fixed connection, the inner bag includes the second galvanized perforated pipe, the second galvanized perforated pipe endotheca is equipped with the second rock wool sound absorption rather than fixed connection, the second rock wool endotheca of inhaling sound is equipped with the steel real pipe rather than fixed connection; the utility model discloses a liner formula structure, under shortening the silencer length condition, can effectively ensure noise eliminator's noise absorbing area and length to reach effectual noise reduction effect.

Description

Small-size gas turbine exhaust noise eliminator

Technical Field

The utility model relates to a gas turbine falls the technical field of making an uproar, specifically is a small-size gas turbine exhaust noise eliminator.

Background

The gas turbine is widely applied to the fields of power generation, chemical engineering, ships and the like as power output, consists of a gas compressor, a combustion chamber, a gas turbine and the like, and has the working process that: the gas compressor sucks in and compresses air from the atmosphere, the compressed air is mixed with fuel in the combustion chamber and then is combusted into high-temperature gas, the high-temperature gas flows into the gas turbine to push the turbine impeller to drive the gas compressor impeller to rotate, and the gas turbine drives the gas compressor and simultaneously drives the gas compressor to rotate out of the mechanical work.

Because the turbine impeller and the compressor impeller rotate at high speed, the blades periodically cut air to generate extremely strong noise which is transmitted to the outside through the air inlet and outlet, and therefore, the noise elimination and reduction treatment is needed to be carried out on the air inlet and outlet system of the gas turbine. Because the rotating speed of the gas turbine is very high, the generated exhaust noise is mainly medium-high frequency noise, so the exhaust muffler of the gas turbine usually needs to adopt a pure resistive muffling structure, and the existing pure resistive muffling structure has higher requirements on the exhaust muffling and noise reduction performance, and the length of the muffler of the pure resistive structure needs to be long enough, so the muffler is not practical.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a small-size gas turbine exhaust muffler device to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a small-size gas turbine exhaust noise eliminator, includes the shell, fixed mounting has the inner bag in the shell, the shell endotheca is equipped with rather than fixed connection's first sound absorption rock wool, first sound absorption rock wool endotheca is equipped with rather than fixed connection's first galvanized perforated pipe, the inner bag includes second galvanized perforated pipe, second galvanized perforated pipe endotheca is equipped with rather than fixed connection's second sound absorption rock wool, second sound absorption rock wool endotheca is equipped with rather than fixed connection's the real pipe of steel.

As a further technical solution of the present invention: and the second galvanized perforated pipe is fixedly connected with the first galvanized perforated pipe through a reinforcing rib.

As a further technical solution of the present invention: the inner container and the shell are coaxially arranged.

As the utility model discloses a further technical scheme again: the two ends of the inner container are conical.

Compared with the prior art, the beneficial effects of the utility model are that: by adopting the liner structure, the sound absorption area and length of the silencer can be effectively ensured under the condition of shortening the length of the silencer, so that the effective noise reduction effect is achieved.

Drawings

FIG. 1 is a cross-sectional view of a small gas turbine exhaust muffler assembly.

In the figure: 1-shell, 2-first sound absorption rock wool, 3-first galvanized perforated pipe, 4-second galvanized perforated pipe, 5-second sound absorption rock wool, 6-steel solid pipe, 7-inner container and 8-reinforcing rib.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Example 1

As shown in fig. 1, the exhaust muffler device of a small gas turbine comprises a housing 1, wherein a liner 7 is fixedly installed in the housing 1, i.e. a pure resistive structure is formed by the liner 7, in order to improve the muffling and noise reduction effects, a first sound-absorbing rock wool 2 fixedly connected with the housing 1 is sleeved in the housing 1, a first galvanized perforated pipe 3 fixedly connected with the first sound-absorbing rock wool 2 is sleeved in the first sound-absorbing rock wool 2, the first sound-absorbing rock wool 2 is used for absorbing and consuming the noise of the tail gas flowing through the interior of the muffling gas, the liner 7 comprises a second galvanized perforated pipe 4, a second sound-absorbing rock wool 5 fixedly connected with the second galvanized perforated pipe 4 is sleeved in the second galvanized perforated pipe 4, a steel solid pipe 6 fixedly connected with the second sound-absorbing rock wool 5 is sleeved in the second sound-absorbing rock wool 5, the second sound-absorbing rock wool 5 is matched with the first sound-absorbing rock wool 2 to absorb the sound of the tail gas from both sides, so as to improve the sound-absorbing and, the second galvanized perforated pipe 4 is fixedly connected with the first galvanized perforated pipe 3 through a reinforcing rib 8.

Example 2

This embodiment is further optimized on embodiment 1's basis, inner bag 7 and the coaxial setting of shell 1, and the distance between second galvanized perforated pipe 4 on inner bag 7 and the first galvanized perforated pipe 3 is the same promptly, evenly falls the noise to the tail gas that passes through, simultaneously, for reducing internal pressure loss, inner bag 7 both ends are conical to shorten gas turbine exhaust muffler's overall length greatly, reduce the shared space of exhaust muffler, the on-the-spot installation of being more convenient for.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (4)

1. A small-size gas turbine exhaust muffler device, includes shell (1), its characterized in that: fixed mounting has inner bag (7) in shell (1), shell (1) endotheca is equipped with rather than fixed connection's first sound absorption rock wool (2), first sound absorption rock wool (2) endotheca is equipped with rather than fixed connection's first galvanized perforated pipe (3), inner bag (7) are including second galvanized perforated pipe (4), second galvanized perforated pipe (4) endotheca is equipped with rather than fixed connection's second sound absorption rock wool (5), second sound absorption rock wool (5) endotheca is equipped with rather than fixed connection's steel real pipe (6).

2. The small gas turbine exhaust muffler device according to claim 1, wherein: the second galvanized perforated pipe (4) is fixedly connected with the first galvanized perforated pipe (3) through a reinforcing rib (8).

3. The small gas turbine exhaust muffler device according to claim 1 or 2, wherein: the inner container (7) and the shell (1) are coaxially arranged.

4. The small gas turbine exhaust muffler device according to claim 3, wherein: the two ends of the inner container (7) are conical.

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