RU185956U1 - Device for damping the noise of gas discharge into the atmosphere - Google Patents

Abstract

The utility model relates to the oil and gas industry, in particular to devices for damping the noise of a high-speed jet of gas generated at the outlet of waste gas pipelines from technological equipment for gas preparation. A device for suppressing the noise of gas discharge into the atmosphere contains two coaxially mounted cylindrical chambers: an exhaust chamber — a body and a receiving chamber with perforated walls, a vertical exhaust pipe, in the upper part of which a protective cover and a cap are secured against possible atmospheric precipitation. The housing is rigidly connected through a concentric transition with a vertical outlet pipe. An inlet pipe is placed on the side wall of the housing, which is rigidly connected through a concentric transition to a receiving chamber, which is adapted to be attached to the housing. At the top of the exhaust chamber is a perforated disc. The casing is lined with sound-absorbing material from the inside. Outside, support brackets are rigidly attached to the bottom of the case. The constructive implementation of the device in the form of a single design provides effective damping of the noise of gas discharges into the atmosphere, as well as ensuring environmental protection by directing gas emissions upward above the places where people are. 2 ill.

Description

The utility model relates to the oil and gas industry, in particular to devices for damping the noise of a high-speed jet of gas generated at the outlet of waste gas pipelines from technological equipment for gas preparation.

Known cold candle relating to devices for discharging gas into the atmosphere from various technological equipment of toxic gases, mainly combustible gases, containing a waste pipe with an inlet pipe mounted vertically, made with internal and external longitudinal fins, a diffuser is installed at the outlet of the discharge pipe [RU 2206833 C1 IPC F23J 11/10 (2000.01), publ. 06/20/2003]. Longitudinal fins are made in the form of straight, continuous longitudinal ribs that increase the stability, stiffness and resistance of the discharge pipe to dynamic loads (bending and vibrations) arising, for example, under the influence of wind load, earthquake, flowing gas flows and other internal and external influences.

Known silencer for exhaust steam, comprising a housing consisting of several coaxially bonded shells forming steps having throttle devices, the inlet stage is connected to the exhaust pipe, the roof mounted on the output stage, and is equipped with a supporting frame with a movable connection with the pipe exhaust pipe type in the pipe "[RU 120711 U1, IPC F01B31 / 16 (2006.01), publ. 09/27/2012]. The steps of the silencer are made in the form of tubular silencers formed by perforated shells and sound-absorbing material located on the peripheral part of the steps.

A disadvantage of the known device is the need for additional installation of building structures to rise above ground level for safe dispersion of gas in the atmosphere, which is determined by the requirements of VNTP 03-85 "Norms of technological design of facilities for the collection, transport, preparation of oil, gas and water of oil fields": paragraph 2.176 . The height of the candle should be determined by the results of gas dispersion calculations, but not less than 5 m from the surface of the earth.

Known silencer exhaust steam jet, which contains a housing including coaxial steps with steam chokes in the form of a spiral-rolled mesh, and a roof [RU 2491427 C1, IPC F01D 25/30 (2006.01), publ. 09/27/2012]. All steps of the body are equipped with an internal sound-absorbing lining. The first stage of the housing is equipped with a drainage device and is connected to the exhaust pipe. The second stage has several vertical tubular silencers formed by perforated shells, placed evenly in the stage casing and fixed on the end faces by diaphragms. The second stage is followed by an expansion chamber equipped with conical shells. The third stage contains several cylindrical cassettes with sound-absorbing material, which are fixed between two mutually perpendicular rows of partitions and ends with a streamlined roof. The known solution allows you to provide the necessary noise reduction while reducing the mass and dimensions of the design of the silencer and permissible hydraulic resistance.

Known silencer multi-section for exhaust ducts of compresses, containing a base, rigidly connected to the inlet pipe, and on the base there is a sound-absorbing block consisting of separate series-connected sections, each of which is made of a layer of sound-absorbing material and an exhaust pipe [RU 2283434 C1, IPC F01N 1 / 24 (2006.01), publ. 09/10/2006].

Known silencer exhaust steam jet, which consists of upper and lower stages, and contains a housing, sound-absorbing inner lining, roof, drainage device, exhaust pipe, and the housing has stiffeners [RU 586804 C1, IPC F01D 25/30 (2006.01), F01N 1/04 (2006.01), publ. 06/10/2016].

The disadvantages of the known devices include the complexity of the design.

The technical problem is to create a technical tool designed to dampen the noise of gas discharged into the atmosphere, taking into account operation in areas with different climatic conditions, in compliance with the requirements of paragraph 2.176 of the norms of VNTP 03-85 “Norms of technological design of facilities for the collection, transport, preparation of oil, gas and water of oil fields ”and in compliance with environmental standards.

When implementing the claimed utility model, the technical problem is solved by achieving a technical result, which consists in increasing the efficiency of damping the noise of gas discharge into the atmosphere.

The technical result is achieved by the fact that the device for suppressing the noise of gas discharge into the atmosphere contains two coaxially mounted cylindrical chambers: an exhaust chamber — a housing and a receiving chamber with perforated walls, as well as an inlet pipe, a vertical outlet pipe, and support brackets, the specified housing is rigidly connected through concentric transition with a vertical outlet pipe, an inlet pipe is placed on the side wall of the housing, which is connected to a receiving chamber, which is mounted housing, the housing is lined with sound absorbing material on the inside, the outside of the lower housing part fixedly attached support brackets.

In FIG. 1 schematically shows a device for damping the noise of a gas discharge into the atmosphere.

In FIG. 2 is a section along AA of FIG. 1 shows a possible arrangement of support brackets.

A device for damping the noise of gas discharge into the atmosphere (Fig. 1, Fig. 2) contains two coaxially located cylindrical chambers: an exhaust chamber - a housing 1, and a receiving chamber 2 with perforated walls, an inlet pipe 3, a vertical outlet pipe 4, a protective cover 5 , head 6 and support brackets 7.

The exhaust chamber - the housing 1 in the upper part is rigidly connected through a concentric transition 8 with a vertical discharge pipe 4 (discharge pipe). On the side wall of the exhaust chamber - housing 1 there is an inlet pipe 3, which is rigidly connected through a concentric transition 9 to the receiving chamber 2 in its upper part. To reduce the rate of gas exit from the device with respect to the inlet speed, the vertical outlet pipe 4 is made of a larger diameter than the inlet pipe 3.

In the exhaust chamber - housing 1, a perforated disk 10 and mounting brackets 11 are rigidly mounted successively from top to bottom for mounting the receiving chamber 2. The exhaust chamber - housing 1 is internally lined with sound-absorbing material 12, which is held by a perforated screen 13 installed inside to protect against blowing out of sound-absorbing material 12. On the outside on the housing 1 is installed a heat-insulating layer 14.

The total area of the holes of the perforated disk 10 is larger than the cross-sectional area of the inlet pipe 3. At the bottom of the outlet chamber - housing 1, a drainage 15 is placed, for example, in the form of a condensate drain valve. Outside to the lower part of the exhaust chamber - the housing 1 are rigidly attached support brackets 7, which are fixed to the embedded elements of the foundation 16 by, for example, foundation bolts 17 or welding.

In the upper part of the vertical discharge pipe 4, a protective cover 5 and a cap 6 are secured against possible atmospheric precipitation in the internal cavity of the device. The protective cover 5 is rigidly attached to the inner surface of the vertical discharge pipe 4 using a stand 18, which is, for example, a plate made made of sheet steel and welded to the protective cover 5.

To ensure the discharge of discharged gas above the places of residence of people, the total height H of the device is made at least 5 m.

The exhaust chamber - housing 1 can be made in the form, for example, of a pipe segment, an assortment according to GOST 8733-74, from the bottom of which an elliptical plug is installed according to GOST 17379-2001.

The receiving chamber 2 can be made in the form, for example, of a pipe segment, assortment according to GOST 8733-74. Then, perforation holes are made in the walls of the pipe segment, the total area of which is larger than the cross-sectional area of the inlet pipe 3. For example, an elliptical plug according to GOST 17379-2001 is installed from the lower end of the receiving chamber 2.

The housing 1 can be connected to a vertical outlet pipe 4 through a concentric transition 8, which is made, for example, according to GOST 17378-2001.

The number of mounting brackets 11 for mounting the receiving chamber 2 is selected constructively from the condition of reliable mounting of the receiving chamber 2 in the exhaust chamber - the housing 1 of the device.

Parts are made of steel, the brand of which is determined by the operating conditions of technological equipment placed in certain climatic conditions. Sound-absorbing material 12 and heat-insulating layer 14 can be made, for example, of mineral wool.

The number of mounting brackets 11 for mounting the receiving chamber 2 is selected constructively from the condition of reliable mounting of the receiving chamber 2 in the housing 1 of the device.

Details, except for sound-absorbing material 12 and heat-insulating layer 14, are made of steel, the grade of which is determined by the operating conditions of technological equipment placed in certain climatic conditions. The heat-insulating layer 14 is designed to prevent freezing of liquid released from the gas during the operation of the device in winter. The heat-insulating layer 14 can be coated externally with a thin sheet material (not shown), for example, galvanized steel to protect it from atmospheric precipitation.

The device operates as follows.

The gas flow enters the receiving chamber 2 through the inlet pipe 3 vertically down. In the receiving chamber 2 there is an expansion, a decrease in the speed and energy of the gas flow. Next, the gas passes through the perforated walls of the receiving chamber 2, while changing the direction of motion by 90 °, goes into the cavity of the exhaust chamber - the housing 1 in the form of horizontal jets. In the exhaust chamber - body 1, gas jets are reflected from the perforated screen 13, while part of the kinetic and sound energy of the gas stream is transferred to the heat in the layer made of sound-absorbing material 12. Next, the upward gas stream passes through the openings of the perforated disk 10, leaving it into in the form of vertical jets. Then the gas through the narrowing section of the concentric transition 8 enters the vertical exhaust pipe 4, rises, passes the gaps between the vertical exhaust pipe 4 and the protective cover 5, and enters the cavity of the head 6. In this case, due to the effect of ejection into the annular space between the vertical exhaust pipe 4 and head 6 draws in a stream of air. Thus, at the outlet, the gas stream does the work and additionally loses energy. Further, the flow of the gas-air mixture exits vertically upward and dissipates in the atmosphere.

Thus, there is a process of effectively damping the noise of the output gas stream when passing through the proposed device, due to multiple changes in the direction of flow, stepwise expansion, reflection, absorption of sound waves, narrowing and expansion of the passage in the elements of the specified device. The gas stream does the work, as a result of which there is a decrease in the energy of the gas stream and a decrease in the velocity of the gas stream at the outlet.

When gas is discharged on the internal surfaces of the device, condensation of a droplet liquid from gas is possible, which will be collected in the lower part of the housing 1. Periodic emptying of the liquid is carried out in a stand tank (not shown) through drainage 15, or into a drainage pipe, which ensures compliance with the requirements environmental protection.

The protective cover 5 allows you to protect the internal cavity of the device from atmospheric precipitation falling vertically, and the head 6 allows you to protect from atmospheric precipitation falling at an angle to the vertical. This ensures reliable protection of the internal cavity of the device from atmospheric precipitation.

The design of the proposed device allows its installation on the foundation without the construction of additional building structures.

The structural dimensions of the elements of the claimed utility model depend on the given initial requirements for the discharge of gas discharged.

All elements of the device are technological, easy to assemble, a larger number of structural parts can be made from standard and unified components.

Thus, the inventive device for damping the noise of gas discharge into the atmosphere allows you to expand the arsenal of technical means used to dampen the noise of a high-speed jet of gas generated at the outlet of the exhaust gas pipelines from the gas treatment equipment, while it has a unified design without additional installation structures, and allows the requirement of paragraph 2.176 according to the norms of VNTP 03-85 “Norms of technological design of facilities for the collection, transport, preparation of oil, gas and water of oil months ", and also ensures compliance with environmental requirements.

Claims (1)

A device for damping the noise of gas discharge into the atmosphere, characterized in that it contains two coaxially mounted cylindrical chambers: an exhaust chamber - a body lined with sound-absorbing material from the inside, and a receiving chamber with perforated walls, a vertical exhaust pipe equipped with a protective cover against possible atmospheric precipitation, while the specified housing is rigidly connected through a concentric transition with a vertical outlet pipe, a perforator is installed in the upper part of the exhaust chamber - the housing A disc, below which an inlet pipe connected to a receiving chamber is located on the side wall, and the lower part of the housing is provided with support brackets on the outside.

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