RU2309269C2 - Noise silencer for compressor station - Google Patents

Abstract

FIELD: mechanical engineering; noise silencing facilities.

SUBSTANCE: noise silencer for compressor station has housing, intake and exhaust members. Design peculiarity is that exhaust member is made in from of air intake pipe installed in lower chamber connected with reactive silencing chamber by throttling partition, reactive silencing chamber being coupled with active silencer consisting at least of two sections accommodating plate silencers. Active silencer is connected with filtering chamber furnished with louvered intake members.

EFFECT: improved efficiency of noise silencing owing to exclusion of "beam effect" and penetration of sound waves both along axis of silencer and through its two wall thanks to placing sound-absorbing elements on way of propagation of sound waves.

5 cl, 3 dwg

Description

The invention relates to mechanical engineering, in particular to a technique for damping noise.

Known silencer containing a cylindrical body with a slanting exhaust cut, end inlet pipe and sequentially located in the housing sections, each of which is equipped with a central pipe and continuous partitions with a conical shell (AS USSR No. 371354, publ. 01.01.1973).

A disadvantage of the known technical solution is the relatively low efficiency of noise attenuation at low frequencies.

The closest technical solution in technical essence is a multi-section silencer containing a cylindrical body, an end exhaust pipe rigidly connected to a central pipe having perforation, perforated partitions made in the form of an additional perforated pipe coaxially located to the body and central pipe, and the ends of all pipes are rigidly connected to the housing by means of blind partitions (RF patent No. 2062889, publ. 06/27/1996).

The disadvantage of the prototype is the relatively low efficiency of sound attenuation due to the possibility of the occurrence of a "radiation effect" and, as a result, the penetration of sound waves both along the axis of the muffler and through its two walls.

The technical result of the invention is to increase the efficiency of sound attenuation by eliminating the "radiation effect" and the penetration of sound waves both along the axis of the silencer and through its two walls by introducing sound-absorbing elements on the propagation path of sound waves.

This is achieved by the fact that in the noise suppressor for a compressor station comprising a housing, inlet and outlet element, the exhaust element is made in the form of an air intake pipe installed in the lower chamber connected to the reactive silencing chamber by means of a throttling partition, the reactive silencing chamber being connected to the active silencer representing at least two sections in which plate silencers are located, the active silencer being connected to a filter chamber having inlet elements in the form louvre.

The sound-absorbing material of an active silencer can be made on the basis of aluminum-containing alloys, followed by filling them with titanium hydride or air with a density in the range of 0.5 ... 0.9 kg / m ³ with the following strength properties: compressive strength in the range of 5 ... 10 MPa, bending strength within 10 ... 20 MPa.

The sound-absorbing material of the active silencer can be made of soft foamed porous sound-absorbing material, for example, foamed polyurethane foam or polyethylene foam, or of rigid porous sound-absorbing material, for example, foam aluminum.

The sound-absorbing material of an active silencer can be made of rockwool basalt-based mineral wool.

The sound-absorbing material of the active silencer can be made in the form of crumbs from solid vibration-damping materials, for example, elastomer, polyurethane or plastic compound such as Agate, Anti-Vibrate, Shvim, placed in a shell made of soundproof material, and the size of the fractions of the crumb lies in the optimal range of values 0.3 ... 2.5 mm.

Figure 1 presents a General view of the proposed silencer, figure 2 - section aa of figure 1; figure 3 is a section bb In figure 1.

The noise suppressor for the compressor station comprises a housing 1 fixed to the base 9, inlet 3 and outlet 7 elements and sound-absorbing active elements. The exhaust element 7 is made in the form of an air intake pipe installed in the lower chamber 6, connected to the reactive jamming chamber 10 by means of a throttling partition 8, and the reactive jamming chamber is connected to the active silencer, which is at least two sections 4 and 5 of height L, in which the plate mufflers 13 of width b with a gap 12 of size a are placed in the frame 11, the active muffler being connected to a filter chamber 2 having inlet elements in the form of a louvre grill 3. Width of the plate muffler I 13 in the peripheral parts of the frame is a value of c, two times less than b.

The sound-absorbing material of the active silencer is made on the basis of aluminum-containing alloys, followed by filling them with titanium hydride or air with a density in the range of 0.5 ... 0.9 kg / m ³ with the following strength properties: compressive strength in the range of 5 ... 10 MPa bending strength in the range of 10 ... 20 MPa or from a soft foamed porous noise-absorbing material, for example, foamed polyurethane foam or polyethylene foam, or from a rigid porous noise-absorbing material, such as foam aluminum (not shown in the drawing).

The sound-absorbing material of an active silencer is made of rockwool basalt mineral wool or URSA mineral wool or P-75 basalt wool or glass wool lined with glass wool or foamed polymer, such as polyethylene or polypropylene.

The sound-absorbing material of the active silencer is made in the form of crumbs from solid vibration-damping materials, for example, elastomer, polyurethane or plastic compound such as Agate, Anti-Vibrate, Shvim, placed in a shell made of soundproof material, and the size of the fractions of the crumb lies in the optimal range of 0, 3 ... 2.5 mm (not shown in the drawing).

Silencer works as follows.

Sound waves, together with a turbulent stream of compressed air, enter the cavity of the chamber 2 through the shutters of the grill 3, and from it through the chambers 4 and 5 of the active silencer into the chamber of reactive silencing 10, and then through the throttling partition 8 into the exhaust element 7 in the form of an intake pipe installed in the lower chamber 6. At the same time, the sound power of the jet of compressed air is lost both in the reaction chambers 2 and 10, and in the pores of the sound-absorbing material of the active silencer 13.

The proposed design is efficient and reliable.

Claims (5)

1. A silencer for a compressor station, comprising a housing, inlet and outlet element, characterized in that the exhaust element is made in the form of an air intake pipe installed in the lower chamber connected to the reactive silencing chamber by means of a throttling partition, the reactive silencing chamber being connected to the active silencer representing at least two sections in which plate silencers are located, the active silencer being connected to a filter chamber having inlet elements in the form of lyuziynoy lattice. 2. A silencer for a compressor station according to claim 1, characterized in that the sound-absorbing material of the active silencer is made on the basis of aluminum-containing alloys, followed by filling them with titanium hydride or air with a density in the range of 0.5-0.9 kg / m ³ with the following strength properties: compressive strength in the range of 5-10 MPa, bending strength in the range of 10-20 MPa. 3. A silencer for a compressor station according to claim 1, characterized in that the sound-absorbing material of the active silencer is made of soft foamed porous sound-absorbing material, for example, foamed polyurethane foam or polyethylene foam, or of rigid porous sound-absorbing material, for example foam aluminum. 4. A noise muffler for a compressor station according to claim 1, characterized in that the sound-absorbing material of the active silencer is made of rockwool-based mineral wool on a basalt basis. 5. A silencer for a compressor station according to claim 1, characterized in that the sound-absorbing material of the active silencer is made in the form of crumbs of solid vibration-damping materials, for example elastomer, polyurethane, or plastic compound such as "Agate", "Anti-vibration", "Shvim", placed into a shell of translucent material, and the size of the fractions of the crumbs lies in the optimal range of values of 0.3-2.5 mm

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