SU1394231A1 - Noise suppressor for geothermal wells - Google Patents

Abstract

The invention makes it possible to increase the efficiency of damping the noise of geothermal wells. The device consists of three stages of noise suppression, the first one from. which is a flow divider 1 enclosed in a sound-insulating casing 2. Divider 1 is made of coaxially arranged pipes 9 and 10 with openings made at an angle to each other. Pipe 9 and 10 separate the flow of steam, bringing the flow of steam to the laminar . At the exit from the divider, the flow breaks up into small streams directed in pairs at an angle to each other; Guo The second stage of the silencer includes a divider 3 placed in the soundproofing casing 4. High-frequency oscillations propagating along the axis of the device are suppressed by the sound-absorbing material of the outdoor umbrella 5 about 3 degrees (L

Description

The invention relates to the testing of geothermal wells leading to the surface of steam or steam-water mixture, and can be used when operating geothermal wells, mainly to damp the noise of a steam jet or steam-water mixture at high speed and flow rate (including the flowing of their wells )" 10

The purpose of the invention is to increase the efficiency of damping noise. ·

Figure 1 shows a silencer, a General view; in Fig. 2 - flow divider of the first stage; in Fig.Z - reflector 15 (umbrella) about

The muffler (Fig. 1) consists of a flow divider 1 enclosed in a soundproof casing 2, constituting the first degree of a silencer, scattering 20 of a cathelet 3, enclosed in a soundproof casing 4, constituting the second stage of sound absorption, an external umbrella 5, which is a reflector of sound waves and flow steam and component 25 of the third stage of noise suppression “The outer surface of the umbrella 5 is a spherical segment 6 (Fig. C). Inside the umbrella is filled with sound-absorbing material 7. The silencer is mounted on the base 8 (FIG. 1).

The first stage flow divider (Fig. 2) / consists of two coaxially arranged perforated pipes 9 and 10, equipped with annular nozzles 11 guiding the jets formed by perforation, pairwise one towards the other. In the divider, the steam flow is stratified by coaxial pipes, which makes the nature of its flow close to laminar. Leaving the divider through the perforation of its walls, the flow breaks up into small jets, directed in pairs at 45 at an angle of 45 ° to one another by ring nozzles. This ensures a decrease in its flow rate and energy. The damping of the noise flowing out of the coolant divider takes place in the resonator silencer, which is a soundproof casing. A decrease in the energy of the flow is also ensured by a sharp expansion of its volume when exiting the divider.

In connection with the secondary formation of the flow during the movement of the coolant inside the soundproof casing of the first stage, after exiting the flow divider, a second silencer stage is provided in the silencer design, consisting of a flow divider (divider), which is a perforated cone, and a soundproof casing.

Sound waves propagating along the axis of the silencer meet an umbrella in their path, in which high-frequency vibrations are suppressed by a layer of sound-absorbing material. Low-frequency vibrations due to the special shape of the umbrella, which is part of a spherical surface, are reflected back into the silencer. Part of the sound waves is absorbed by the steam cap formed by the umbrella.

Claims (1)

Claim A silencer for geothermal wells containing three stages of silencing, the first two of which consist of a flow divider and a soundproof casing, and the third is an external umbrella, characterized in that, in order to increase the efficiency of damping noise, the first stage flow divider consists of two coaxially located j sections of pipes having openings located at an angle relative to each other, and an external umbrella of the third stage is mounted on the rods with the possibility of movement along the axis of the muffler. Fi g. 2