RU2727735C1 - Air cleaning device - Google Patents

Abstract

FIELD: machine building.SUBSTANCE: invention relates to machine building for gas turbine technologies and can be used in creation of new and reconstruction of existing plants and machine complexes, where the power drive is represented by gas turbine engines of aviation or other type, for example, gas compressor plants (GCP) of compressor stations on main gas pipelines. Air cleaning device comprises units of air filters, which are grouped into modules and fixed in upper module, means of protection of air filters against direct ingress of atmospheric precipitation, in form of protective hood of hinged type, all modules are made in the form of rectangular prisms, containing side walls with inner and outer lining, assembled on rectangular frames, having angular and vertical posts, bevels of part of flanges forming assembly flanges intended for flange connections, gap between shells is filled with heat insulation, in bottom module on one of walls there is through hole for installation of air intake of gas turbine engine of gas-compressor plant.EFFECT: increasing cyclic strength and service life of air cleaning device at reduction of its weight and manufacturability.5 cl, 9 dwg

Description

The invention relates to the field of mechanical engineering for gas turbine technologies and can be used in the creation of new and reconstruction of existing installations and machine complexes, where gas turbine engines of an aviation or other type are used as a power drive, for example, gas compressor units (GPU) of compressor stations on main gas pipelines.

Known air cleaning device in the air supply systems of gas turbine engines of the GPU drive, containing grouped into blocks and fixed on the outer edges of the carrier body perpendicular to it in several tiers first stage filters, consisting of multicyclones, receiving chambers and dust collectors; second stage air filter units located inside the housing; means of protecting filters from direct hit of atmospheric precipitation in the form of a visor; a system for preventing icing, as well as a system for removing dust accumulating in dust collectors of filters (V. Budusov et al. "Highly efficient air cleaning devices for gas turbines", Zh-l Gas turbine technologies, No. 4, 2000, p. 39).

The disadvantage of the known air-cleaning device is that the flow path has a prismatic shape, which, with an almost uniform flow of air into the flow path along its height, does not provide optimal aerodynamic characteristics of the flow path. In addition, the known air-cleaning device has large dimensions and weight, which cause high labor intensity and manufacturing cost, transportation costs to the place of use, material consumption, labor intensity and cost of building support structures, foundations for them, and installation costs.

Protection of filters from atmospheric precipitation with the help of visors when they work in the flow of intake air or simply in the wind is ineffective, since the flow rate depends on the amount of air passing through the air intake cross-sectional area. This negatively affects the durability of the filter elements, increases the tendency to icing of the elements of the flow path of the device.

The anti-icing system of the known air cleaning device, due to its ramification and operating conditions in an unorganized air flow, to ensure the performance of its functions, requires a significant amount of hot air taken from the compressor of a gas turbine engine, which noticeably affects its efficiency and, consequently, the efficiency of the GPU.

Known air cleaning device for the RF patent for invention No. 2263806, IPC F02C 7/052, publ. 10.11.2005, prototype.

This air cleaning device contains air filter units grouped into modules and fixed in the upper module, a means of protecting air filters from direct atmospheric precipitation, in the form of a tent-type protective cap.

Disadvantages:

- low-tech design,

- high weight and metal consumption due to the large thickness of the sheets,

- the presence of a silencer in the gas-air duct, the parts of which, when destroyed, fall into the inlet of the gas turbine engine (gas turbine engine) and destroy the fan.

The task of creating the invention: increasing the cyclic strength and resource of the air cleaning device while reducing its weight and improving manufacturability.

The achieved technical result: an increase in the cyclic strength and resource of the air-cleaning device while reducing its weight and improving manufacturability.

The solution to this problem was achieved in an air-cleaning device containing air filter blocks grouped into modules and fixed in the upper module, a means of protecting air filters from direct atmospheric precipitation, in the form of a tent-type protective cap, in that all modules are made in the form of rectangular prisms containing side walls with inner and outer skin, assembled on rectangular frames with corner and vertical posts, bevels of a part of the flanges, forming assembled flanges intended for flange connections, the gap between the skin is filled with thermal insulation, in the lower module on one of the walls a through hole is made for installation of the air intake of the gas turbine engine for the drive of the gas compressor unit.

The thickness of the inner lining can be 0.8 ... 1.2 mm, and the outer one - 1.5 ... 2.0 mm, while the inner lining is made of stainless steel, and the outer one is made of carbon steel and is painted or galvanized outside and inside, and the thickness of the layer heat-insulating material, which simultaneously performs the function of noise damping, is made in the range from 100 to 120 mm.

The inner lining can be bolted to the uprights of the frame through perpendicularly folded edges and gaskets between them or on both sides.

The outer skin can be riveted through the folded edges and the U-shaped lining.

The connection of the frame of the higher-level module with the lower-level module can be closed from the inside by straight and corner stainless steel fittings.

The presence of essential features of claim 1 of the claims is sufficient to achieve the technical result.

The invention is illustrated by drawings (Fig. 1 ... 9), where

- in Fig. 1 - schematically shows a general view of the air cleaning device,

- in Fig. 2 - the frame is shown,

- in Fig. 3 - the fastener is shown,

- in Fig. 4 - shows the fastening of the inner shell,

- in Fig. 5 - shows the fastening of the outer shell,

- in Fig. 6 - shows the fastening of the outer shell,

- in Fig. 7 - shows a flange,

- in Fig. 8 - installation of additional elements is shown.

- in Fig. 9 shows the external view of the HEU (air cleaning device).

The following conventions are used in the description:

module 1,

side wall 2,

inner lining 3,

outer casing 4,

clearance 5,

thermal insulation 6,

frame 7,

corner post 8,

vertical rack 9,

inclined elements 10,

part of the upper flange 11,

part of the bottom flange 12,

fastening element 13,

holes 14,

upper module 15,

superior module 16, relative to the subordinate,

subordinate module 17, relative to the higher,

air filter 18,

partition 19,

bypass 20,

roof 21,

tent-type protective cap 22,

lower module 23,

round hole 24,

air intake 25,

GTE (gas turbine engine) drive 26,

bottom 27,

fence 28,

flange connection 29,

fasteners 30,

bend of the shell 31,

U-shaped bracket 32,

gas-air duct 33,

corner finishing element 34,

rectangular filler 35.

The air cleaning device contains several modules 1, which are made in the form of rectangular parallelepipeds and have 4 side walls 2. Each side wall 2 contains an inner skin 3 and an outer skin 4 installed with a gap 5. Thermal insulation is installed in the gap 5 6. The skin 3 and 4 are mounted on the frame 7.

The frame 7 (Fig. 2 and 3) contains a corner post 8, a vertical post 9, inclined elements 10, a part of the upper flange 11, the lower part of the flange 12, the fastening element 13, holes 14. In the upper part, the upper module 15 is made, followed by the superior module 16 and downstream module 17 (relative to each other).

In the upper part there is an air filter 18, a partition 19, a bypass 20, a roof 21, a tent-type protective cap 22.

The lower module 23 has a circular hole 24 in one of the side walls 2 for installing the air intake 25 of the gas turbine engine 26. In addition, the lower module 23 has a bottom 27, in which thermal insulation 6 is installed.

In the upper part, under a tent-type protective cap 22, service platforms with a fence 28 are made.

The connection of the modules 1 is made by flange connections 29 using fasteners 30.

The connection of the outer skin 4 (Fig. 5) is made through the folds of the shell 31 and the "P" -shaped bracket 32 mounted on them. This not only ensures the tightness of the structure, but also significantly increases its bending strength.

The gas-air duct 33 is made entirely of stainless steel, which increases its resource and reduces aerodynamic losses in the air flow.

To protect the flange connections 29 (Figs. 7 and 8), made of carbon steel, corner fittings 34 and rectangular fittings 35 made of stainless steel are used. In addition, they reduce aerodynamic losses in the air flow.

OPERATION OF THE AIR CLEANER

When the GPA GTE drive 26 is turned on, containing a compressor (not shown), a vacuum is created in the gas-air duct 33, and air enters it from the atmosphere, while precipitation is not captured due to the presence of a tent-type protective cap 22,

Application of the invention allowed:

- to increase the cyclic strength and resource of the air cleaning device,

- significantly reduce its weight,

- improve the manufacturability of assembly,

- to reduce aerodynamic losses in the tract,

- ensure noise reduction without a silencer.

Claims (5)

1. An air cleaning device containing air filter units grouped into modules and fixed in the upper module, a means of protecting air filters from direct atmospheric precipitation, in the form of a tent-type protective cap, characterized in that all modules are made in the form of rectangular prisms containing side walls with inner and outer skins, assembled on rectangular frames with corner and vertical posts, bevels of a part of the flanges, forming assembled flanges intended for flange connections, the gap between the skins is filled with thermal insulation, in the lower module on one of the walls a through hole is made for installing an air intake gas turbine engine drive gas compressor unit. 2. Air cleaning device according to claim 1, characterized in that the thickness of the inner skin is 0.8 ... 1.2 mm, and the outer one is 1.5 ... 2.0 mm, while the inner skin is made of stainless steel, and the outer one is made of carbon steel and painted or galvanized outside and inside, and the thickness of the layer of heat-insulating material, which simultaneously performs the function of noise damping, is made in the range from 100 to 120 mm. 3. Air cleaning device according to claim 1 or 2, characterized in that the inner lining is attached to the vertical frame posts through perpendicularly bent edges and sealing gaskets between them and on both sides by bolted connections. 4. Air cleaning device according to claim. 1, characterized in that the outer skin is connected through the bent edges and the U-shaped plate by riveted joints. 5. Air cleaning device according to claim. 1, characterized in that the connection of the frame of the upstream module with the downstream module is closed from the inside by rectilinear and angular stainless steel fittings.

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