SU1682608A1

SU1682608A1 - Gas flow silencer

Info

Publication number: SU1682608A1
Application number: SU884623644A
Authority: SU
Inventors: Владимир Евгеньевич Владимиров; Борис Семенович Алексеев; Валерий Дмитриевич Михалев
Original assignee: В.Е.Владимиров, Б.С.Алексеев и В.Д.Михалев
Priority date: 1988-12-26
Filing date: 1988-12-26
Publication date: 1991-10-07

Abstract

Изобретение позвол ет обеспечить эффективность шумоглушени путем разделени , смешивани и интерференции звуковых волн газового потока. Пульсирующий газовый поток через впускной патрубок 2 поступает во впускную камеру 8, где происход т его расширение, частичное демпфирование пульсаций и предварительное разделение на две части. Перва часть потока поступает в центральную трубу 4, а втора часть, проход через секцию 5 шнека, закручиваетс и под действием центробежных сил на входе в первую центральную камеру 9 отбрасываетс к стенке корпуса 1, обусловлива образование разрежени по оси корпуса 1. Далее поток газов поступает в первый резонатор 12, где мен ет свое направление и вновь закручиваетс по спирали Архимеда, а также за счет перфорации слоев стакана резонатора 12 и плавно измен ющейс длины спирали происход т разделение и смешивание газового потока с более высоким и более низким давлением, т.е. происходит частичное поглощение частот различной длины. Далее процессы повтор ютс , а во втором резонаторе 13 благодар форме усеченного конуса и наличию перфорации происход т дополнительное шумоглушение, а также формирование выходного потока, который через выпускной патрубок 3 выбрасываетс в окружающую среду. 4 з.п. ф-лы, 5 ил. Sw ЁThe invention provides sound suppression efficiency by separating, mixing and interfering sound waves of a gas stream. The pulsating gas stream through the inlet pipe 2 enters the inlet chamber 8, where its expansion occurs, partial pulsation damping and preliminary separation into two parts. The first part of the flow enters the central tube 4, and the second part, the passage through section 5 of the screw, twists and under the action of centrifugal forces at the entrance to the first central chamber 9 is thrown against the wall of the housing 1, causing the formation of a vacuum along the axis of the housing 1. Then the gas flow enters In the first resonator 12, where it changes its direction and is twisted again in the spiral of Archimedes, and due to the perforation of the layers of the glass of the resonator 12 and the smoothly varying length of the spiral, the gas flow is mixed and mixed with f high and lower pressure, i.e. partial absorption of frequencies of different lengths occurs. Further, the processes are repeated, and in the second resonator 13, due to the shape of a truncated cone and the presence of perforations, additional noise attenuation occurs, as well as the formation of an output stream, which is discharged through the outlet pipe 3 into the environment. 4 hp f-ly, 5 ill. Sw Yo

Description

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Claims

Claim

1. A gas flow silencer comprising a cylindrical body with coaxial inlet and outlet nozzles, a central perforated pipe with inlet and outlet openings, a screw auger located between the perforated pipe and the inner surface of the housing and made in the form of separate sections dividing the housing into the inlet, first and the second Central and exhaust chambers, and the first and second resonators located respectively in the first Central and exhaust chambers, and the second resonator is made in the form of a truncated the cone is mounted with a small base in the direction of the outlet pipe and is interfaced with a large base with the inner surface of the housing, characterized in that, in order to improve the noise attenuation, it is additionally equipped with a third resonator installed in the second central chamber, and the first and third resonators are made in the form of multilayer perforated cups in the shape of a spiral of Archimedes.

2. The muffler according to claim 1, characterized in that the direction of winding the spirals of the first and third resonators is opposite.

3. The muffler according to paragraphs. 1 ^. Characterized in that the first and third resonators are installed using transverse jumpers.

5 4. The muffler according to claims 1 to 3, characterized in that the spirals of the first resonator are made in length, gradually increasing in the axial direction from the axis to the periphery,

10 5. The silencer according to claims 1 to 4, characterized in that the spiral of the third resonator is made in length, smoothly decreasing in the axial direction from the axis to the periphery, ι

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