JPH0868399A - Intake bag filter for compressor - Google Patents

Abstract

PURPOSE: To decrease the necessary power for a compressor by cooling air without increasing the size of equipment, in a bag filter to purify air sucked in a compressor. CONSTITUTION: In an intake bag filter for a compressor to purify air sucked bp a compressor, a number of cooling pipes 5 are arranged in a space situated upper stream from a filter cylinder 3 in an intake bag filter body 1 and air sucked in the compressor is cooled.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an intake bag filter for cleaning air sucked by a compressor such as an axial flow compressor used in a blast furnace or the like.

[0002]

2. Description of the Related Art In order to prevent the rotor blades and stator blades of an axial compressor from being contaminated and worn by dust in the air, dust floating in the air before being sucked into the axial compressor. Need to be removed.

Generally, as a method for removing dust in the air, an air filter and a dust collector are conventionally used depending on the amount of dust contained in the air.

The intake bag filter belongs to the air filter and is used when the amount of dust is relatively small. The structure of the intake bag filter removes dust by allowing intake air sucked by the axial compressor to pass through a cloth filter cylinder. The filter cylinder with dust attached can automatically remove dust.

Further, for an axial compressor, a lower intake air temperature requires less power to obtain a required pressure ratio and a required flow rate, so it is desirable that the intake air temperature be as low as possible.

[0006]

It is desirable that the intake air sucked into the axial compressor does not contain dust and has a low temperature. Therefore, it is necessary to install an intake bag filter and an intake cooler for this purpose. In addition to the large size, the pressure loss also increases, which goes against the cost reduction.

The present invention is intended to provide an intake bag filter for a compressor which can solve this problem.

[0008]

According to the present invention, in an intake bag filter for a compressor for cleaning air sucked into a compressor, a cooling pipe type air cooler is provided in a space upstream of a filtering portion of the bag filter. It is characterized by being provided.

[0009]

In the present invention, since the cooling pipe type air cooler is installed in the space upstream of the filtering portion in the intake bag filter for cleaning the air sucked into the compressor, the intake air sucked into the compressor is To be cooled. The required power of the axial compressor is a function of weight flow rate and air column height (compression head),
The low intake air temperature reduces the power in relation to both of them, leading to a reduction in energy costs.

Further, since the space upstream of the filtering portion of the intake bag filter is a portion where the flow velocity of air is slow, even if a cooling pipe type air cooler is provided in this portion, the pressure loss does not increase.

Moreover, since the size of the intake bag filter may be the same, the equipment does not become large and the installation area,
Little impact on equipment costs.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described with reference to FIG. FIG. 1 is a schematic diagram of an intake bag filter of an axial flow compressor incorporating a cooler according to this embodiment.

An intake port 2 is provided in the upper part of the intake bag filter body 1, and a plurality of cloth filter tubes 3 are rigidly attached to the middle part of the main body 1. Below the cloth filter cylinder 3, a hopper 4 for removing dust is provided, and the dust is taken out from here.

In the space upstream of the filtering portion in the intake bag filter main body 1, a nest of cooling pipes 5 arranged in parallel with each other is installed, and cooling water is provided on one inlet side header (see FIG. (Not shown) enters into each cooling pipe 5 and is collected in outlet headers (not shown) on the upper and other sides that flow in parallel in a large number of cooling pipes 5 and are sent to the outside.

Reference numeral 6 denotes a damper provided between the intake bag filter body 1 and an axial flow compressor (not shown). The arrow in FIG. 1 indicates the flow of air.

In this embodiment, the air that has passed through the damper 6 and is sucked into the axial flow compressor enters the intake bag filter 1 through the intake intake port 2, is cooled by the cooling pipe 5 through which the cooling water flows, and is filtered. When entering the tube 3 and passing through the filter tube 3 from the inside to the outside, dust and the like in the air are removed and cleaned. The air thus cooled and purified is sucked into the axial compressor through the damper 6.

In the present embodiment, as described above, since the cooled air from which dust and the like have been removed is sucked into the axial flow compressor,
The power required for the axial compressor can be reduced.

Further, since the flow velocity of air is slow in the space between the intake inlet 2 and the filter cylinder 3 provided with the nest of the cooling pipe 5, that is, in the space upstream of the filtering portion in the intake bag filter body 1. Even if a tube nest made of the cooling pipes 5 is provided, the pressure loss does not increase.

Further, since the nest of the cooling pipe 5 is provided in the space inside the intake bag filter body 1 between the intake intake port 2 and the filter cylinder 3, the size of the intake bag filter is reduced. Therefore, the size of the equipment is not increased, and therefore the equipment does not become large, and the influence on the installation area and the equipment cost can be reduced.

[0020]

According to the present invention, in the intake air bag filter for the compressor for cleaning the air sucked into the compressor, the cooling type air cooler is provided in the space upstream of the filtering portion of the bag filter. The required power of the compressor can be reduced by lowering the temperature of the air sucked into the compressor without increasing the size of the intake bag filter.

Further, since the cooling type air cooler is provided in the portion where the air velocity is low, the pressure loss does not increase, and it has an effect of contributing to the reduction of the power cost.

[Brief description of drawings]

FIG. 1 is a schematic diagram of an intake bag filter of an axial flow compressor incorporating a cooler according to an embodiment of the present invention.

[Explanation of symbols]

 1 Air bag bag body 2 Air intake 3 Filter cylinder 4 Hopper 5 Cooling pipe 6 Damper

Claims (1)

[Claims] 1. A compressor intake air bag filter for cleaning air sucked into a compressor, wherein a cooling pipe type air cooler is provided in a space upstream of a filtering portion of the bag filter. Air bag filter for aircraft.