RU2807151C1 - Air cleaning device of gas pumping unit - Google Patents

Abstract

FIELD: gas turbine technologies.

SUBSTANCE: invention can be used for gas pumping units (GPA) of compressor stations on main gas pipelines. In the air purifying device of the gas pumping unit, it is rectangular in plan with longitudinal and lateral sides, containing air filter blocks grouped into modules and fixed in the upper module, and a means of protecting the air filters from direct ingress of precipitation in the form of a tent-type protective cap, while all modules are made in the form of rectangular prisms containing side walls with internal and external skins, assembled on rectangular frames having corner and vertical posts, bevels of parts of the flanges forming assembled flanges intended for flange connections, the gap between the skins is filled with thermal insulation, so that the air purification device consists of modules, in the top of which there are four L-shaped filter frames, each pair of filter frames forms a clean air chamber, which are located opposite each other, between the pairs of filter frames there are service compartments, separated in the centre by a blank wall made perpendicular to the longitudinal sides, which ensures the formation of two independent air inlets into clean chambers with uniform air flow in front of the air filter units and is guaranteed to exclude air flow between service compartments. The lower module may contain one or more diffusers to direct the air flow. The divider can be made in the form of an inverted triangular prism along the longitudinal side. A service platform can be installed for access to the service compartments on the longitudinal sides of the upper module, outside it.

EFFECT: increase in the number of placed air filter units has been achieved with the same dimensions of the air-purifying device and the elimination of air flow between service compartments.

4 cl, 13 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 are used as a power drive - gas turbine engines of an aviation or other type, for example, gas pumping units (GPU) of compressor stations on main gas pipelines .

An air-purifying device is known in the air supply systems of gas turbine engines of the GPA drive, containing first-stage filters grouped into blocks and mounted on the outer edges of the supporting body perpendicular to it in several tiers, consisting of multicyclones, receiving chambers and dust collectors; second stage air filter units located inside the housing; a means of protecting filters from direct exposure to atmospheric precipitation in the form of a visor; an icing prevention system, as well as a system for removing dust accumulating in filter dust collectors (V. Budusov et al. “Highly efficient air-cleaning devices for gas turbine plants”, journal “Gas Turbine Technologies”, No. 4, 2000, p. 39).

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

Protecting filters from precipitation using canopies when operating in the flow of intake air or simply in the wind is ineffective, since the flow speed depends on the amount of air passing through the cross-sectional area of the air intake. This negatively affects the durability of the filter elements and increases the tendency for the elements of the flow part of the device to ice up.

The icing prevention system of a known air-purifying device, due to its branching 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 significantly affects its efficiency, and, consequently, the efficiency of the gas turbine engine.

An air purifying device is known according to RF patent for invention No. 2263806, IPC F02C 7/052, publ. 11/10/2005

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

Flaws:

- low-tech design,

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

- the presence of a noise suppressor in the gas-air duct, the parts of which, when destroyed, enter the inlet of the gas turbine engine (gas turbine engine) and destroy the blades of the axial compressor of the gas turbine engine.

An air purifying device is known according to Pat. RF for invention No. 2761711, IPC F02C /052, publ. 12/13/2021, prototype.

An air purifying device consisting of grouped modules, in the top of which there are blocks of air filters, and a means of protecting them from direct precipitation, made in the form of a tent-type protective cap, while the grouped modules are made in the form of rectangular prisms containing side walls with an inner and external skins, assembled on rectangular frames, and the gap between the skins is filled with thermal insulation, characterized in that the air-purifying device consists of two modules, in the upper of which there is a passage between the air filter blocks.

The use of this invention gave many negative results:

- the use of a passage and a longitudinal corridor gave a negative result: it led to the flow of air along the passage, especially with a cross wind;

- the number of air filter blocks in the design of an air purifying device with the same filter frames is limited by the size of the upper module.

Objectives of the invention: increasing the number of air filters placed with the same dimensions of the air-purifying device by changing the filter frames and eliminating the flow of air between service compartments.

Achieved technical results: increasing the number of air filter units placed with the same dimensions of the air cleaning device and eliminating air flow between service compartments.

The solution to these problems was achieved in the air purification device of a gas pumping unit of a rectangular shape in plan with longitudinal and lateral sides, containing blocks of air filters grouped into modules and fixed in the upper module, and a means of protecting air filters from direct exposure to precipitation in the form of a tent-type protective cap, with In this case, all modules are made in the form of rectangular prisms containing side walls with internal and external skins, assembled on rectangular frames having corner and vertical posts, bevels of parts of the flanges, forming assembled flanges intended for flange connections, the gap between the skins is filled with thermal insulation, thus that the air purifying device consists of modules, in the top of which there are four L-shaped filter frames, each pair of filter frames forms a chamber of clean air, which are located opposite each other, between the pairs of filter frames there are service compartments, separated in the center by a blank wall , made perpendicular to the longitudinal sides, which ensures the formation of two independent air inlets into clean chambers with uniform air flow in front of the air filter units and is guaranteed to exclude air flow between service compartments.

The lower module may contain one or more diffusers to direct the air flow.

The divider can be made in the form of an inverted triangular prism along the longitudinal side.

On the longitudinal sides of the upper module, outside it, a service platform can be installed for access to the service compartments.

The essence of the invention is illustrated by drawings (Fig. 1...13), where;

- in fig. 1 shows a general plan view of the air purifying device,

- in fig. Figure 2 shows a section C-C of the air purifying device,

- in fig. Figure 3 shows a side view of the first L-shaped frame,

- in fig. Figure 4 shows a view of the first L-shaped frame from the inside,

- in fig. Figure 5 shows a top view of the first L-shaped frame,

- in fig. Figure 6 shows a section D-D of the air purifying device along the service compartment with a partition,

- in fig. Figure 7 shows a section D-D, a version with a divider in the lower module,

- in fig. 8 - view of the junction of the divider in the lower module with the upper module,

- in fig. Figure 9 shows a view of the upper module, covered with casing,

- in fig. Figure 10 shows a plan view of the upper module,

- in fig. 11 shows an isometric view of the upper module,

- in fig. Figure 12 shows the design of the air purifying device assembled with the service platform and entrance doors,

- in fig. 13 shows a view with the entrance doors.

The following conventions are used in the description:

upper module 1,

lower module 2,

lower compartment 3,

air intake hole 4,

gas turbine engine (GTE) 5,

tent type protective cap 6,

protective mesh 7,

longitudinal wall 8,

end wall 9,

the first L-shaped frame 10,

second L-shaped frame 11,

third L-shaped frame 12,

fourth L-shaped frame 13,

air filter blocks 14,

first service bay 15,

second service compartment 16,

first clean air chamber 17,

second clean air chamber 18,

partition 19,

heated air supply system 20,

common pipeline 21,

divider 22,

prism 23,

prism faces 24,

top of prism 25,

prism base 26,

service compartment floor 27,

floor of clean cells 28,

rectangular openings 29,

service area 30,

front door 31.

A is the length of the longitudinal wall,

B is the length of the end wall.

The essence of the invention is illustrated in Figures 1...13.

In fig. 1 shows the top view of the air purifying device, and FIG. Figure 2 shows the section C-C.

The system (Fig. 1 and 2) contains an upper module 1, a lower module 2, a lower compartment 3, an air intake hole 4, a gas turbine engine 5, a tent-type protective cap 6, a protective mesh 7.

The air intake device is made in plan in the form of a rectangle and contains longitudinal walls 8 and end walls 9.

The condition A is greater than B must be met,

where: A is the length of the longitudinal wall, B is the length of the end wall (Fig. 1).

Air filter blocks 14 are installed in cells of L-shaped frames 10-13. In total, four L-shaped frames are used: the first L-shaped frame 10, the second L-shaped frame 11, the third L-shaped frame 12, and the fourth L-shaped frame 13, inside each L Air filter blocks 14 are placed in the -shaped frame.

The first L-shaped frame 10 in three projections is shown in Fig. 3-5.

Each pair of L-shaped filter frames 10 and 11 or 12 and 13 forms a clean air chamber, the first clean air chamber 17 and the second clean air chamber 18 (Fig. 1), respectively, which are located opposite each other, between pairs of filter frames there are service compartments separated in the center by a partition 19 perpendicular to the longitudinal wall 8 (Fig. 1).

Between the tent-type protective cap 6 on both sides there are first and second service compartments 15 and 16, which house some elements of the heated air supply system 20 coming from the gas turbine engine 5 (Fig. 6), more precisely from one of the intermediate stages of the gas turbine engine compressor 5 .

In fig. Figure 7 shows a system in which a divider 22 is installed in the lower module 2 under the first 15 and second service compartments 16.

The divider 22 (Fig. 8) is made in the form of a triangular prism 23 with rectangular edges 24 and the top of the triangular prism 25 and the base 26 installed in the lower module 2 on the floor of the service compartments 15 and 16. At the exit from the clean chambers 28 there are openings 29 for bypass from clean air chambers 17 and 18 to lower module 2.

In fig. Figure 9 shows a view of the upper module, covered with casing on top,

In fig. 10 shows a plan view of the upper module 1,

In fig. 11 shows an isometric view of the upper module 1 assembled with tent-type protective caps 6,

In fig. 12 shows a service area 30 with two entrance doors 31,

In fig. 13 shows the entrance doors 31 for entering the upper module 1.

OPERATION OF THE AIR HEATING SYSTEM IN THE AIR CLEANING DEVICE

When the gas pumping unit (gas pumping unit of the gas turbine engine) of the drive (Fig. 2) is turned on, air enters the gas turbine engine 5 (Figs. 1 and 2) from the atmosphere, and it is well cleaned to prevent wear of the gas turbine engine 5 flow part.

The use of L-shaped frames 10-13 made it possible to place up to 30% more air filter units 14.

The use of a partition 19 (Fig. 3), which completely separates the first and second service chambers 15 and 16 from the mutual flow of air, significantly improves the characteristics of the gas turbine engine 5.

After fuel combustion in the gas turbine engine 5 and activation of the gas turbine engine 5 turbine (not shown), the exhaust gases are released into the atmosphere.

In fig. 4-13 shows options with four rows of element air filter blocks in various projections. The use of another row of air filter blocks on four L-shaped frames 10-13 increases the flow path through the air filter blocks by up to 30%. This reduces aerodynamic losses in the air filter units 14 and increases the efficiency of the gas turbine engine 5.

The use of a divider 22 when air flows from the upper module to the lower module will significantly reduce the aerodynamic pressure losses in the air-purifying device path.

At temperatures below +5°C, the flow of warm air taken from the gas turbine engine 5 and supplied to the air filter units 14 through the heated air supply system 20 in the autumn-spring and winter periods is increased.

The use of the invention allowed:

- ensure a uniform supply of air to the gas turbine engine inlet in winter and spring-autumn by preventing freezing of air filter units and, thereby, increasing its efficiency and the efficiency of the gas pumping unit,

- reduce the flow of air between the blocks of air filters 14, especially in cross winds due to the correct installation of the partition and the use of L-shaped frames 10-13 in plan, thereby increasing the efficiency of the gas turbine engine,

- reduce aerodynamic losses when air flows from the upper module to the lower module through the use of a divider,

- simplify the assembly and repair of the air purifying device,

- reduce the weight and metal consumption of the gas pumping unit modules and increase its strength from external loads,

- reduce the consumption of heated air to a minimum, thereby increasing the efficiency of the gas turbine engine.

Claims (4)

1. The air purification device of the gas pumping unit is rectangular in plan with longitudinal and lateral sides, containing air filter blocks grouped into modules and fixed in the upper module, and a means of protecting the air filters from direct exposure to precipitation in the form of a tent-type protective cap, with all modules made in the form of rectangular prisms containing side walls with internal and external skins, assembled on rectangular frames having corner and vertical posts, bevels of parts of the flanges forming assembled flanges intended for flange connections, the gap between the skins is filled with thermal insulation, characterized in that The air purifying device consists of modules, in the top of which there are four L-shaped filter frames, each pair of filter frames forms a chamber of clean air, which are located opposite each other, between the pairs of filter frames there are service compartments, separated in the center by a blank wall made perpendicular to the longitudinal sides, which ensures the formation of two independent air inlets into clean chambers with uniform air flow in front of the air filter units and is guaranteed to exclude air flow between service compartments. 2. An air purifying device for a gas pumping unit according to claim 1, characterized in that the lower module contains one or more dividers to direct the air flow. 3. The air purifying device of the gas pumping unit according to claim 2, characterized in that the divider is made in the form of an inverted triangular prism along the longitudinal side. 4. The air purifying device of the gas pumping unit according to claim 1, characterized in that on the longitudinal sides of the upper module, outside it, a service platform is installed for access to the service compartments.