JP2001200767A - Cleaning device for air suction filter in supercharger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cleaning device for an suction filter in a supercharger, capable of easily cleaning the filter by simple work, even during operation of an engine without having to remove the filter from a supercharger main unit. SOLUTION: This cleaning device, removing dust from an air suction filter mounted in a supercharger supplying air to a combustor of a margin engine for cleaning the filter, comprises a rotatably journalled arm, a nozzle mounted in the arm movably along a reverse surface of the filter, a means supplying pressure gas to this nozzle, a means supplying cleaning liquid to the nozzle, and a dust receiver provided movably along a surface of the filter to follow up the nozzle to receive foreign matter detached from the filter.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a supercharger air suction filter for removing dust from an air suction filter attached to a supercharger for supplying air to a combustor of a marine engine and cleaning the filter. A cleaning device.

[0002]

2. Description of the Related Art A turbine engine is provided in an engine room of a large ship, and a large amount of air is taken into a combustor of the engine from a supercharger. As shown in FIG. 1, the engine 1 includes a turbine 5 for driving a rotary shaft 6 of a compressor 4 and an output turbine 7 for driving a screw. And the output turbine 7 are rotated, and the compressor 4 is supplied from the supercharger 2 by rotating the impeller 41 and the scroll 42 which are coaxial with the compressor turbine 5.

[0003] The air taken into the supercharger 2 is sent to a combustor via a heat exchanger (not shown) after rotating the impeller 41 and the scroll 42 to burn fuel.
After turning the turbines 5 and 7 in the inner case from the gas inlet 8 as the combustion gas, the gas is sent to a heat exchanger (not shown) via the gas outlet 9, and is exhausted to the outside after heat exchange with cold air. It has become.

A filter is attached to the air suction portion 21 of the supercharger 2 to remove foreign matter from the suction air and to clean the air. However, the filter filters dust and dust to filter a large amount of air. Adhesion of oil droplets is remarkable, and clogging frequently occurs. If the filter becomes clogged,
The intake pressure due to the supercharger decreases, causing various problems such as surging of the supercharger and reduction of the output of the engine. In order to prevent such a problem from occurring, the clogging state of the filter is constantly monitored by detecting the intake pressure of the supercharger 2 using the manometer 28, and the intake pressure falls below a predetermined threshold. By the way, stop the engine. Then, the filter is removed from the turbocharger while the engine is stopped, and the filter is washed.

[0005]

However, the turbocharger of a large marine engine has a diameter of 1.5 to 2 m, and the work of removing the filter from the turbocharger, the work of cleaning the filter,
The remounting operation requires a great deal of labor and time, so that the engine shutdown period is prolonged. Further, if the engine is frequently stopped every time the air suction filter of the turbocharger is clogged, the operating cost such as fuel consumption increases. For this reason, there is a strong demand for the development and practical use of a device capable of easily cleaning the air suction filter of the supercharger without stopping the engine.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and it is possible to easily clean a filter by a simple operation even during engine operation without removing the filter from a supercharger main body. It is an object of the present invention to provide a cleaning device for a supercharger air suction filter.

[0007]

According to the present invention, there is provided an apparatus for cleaning an air suction filter of a supercharger for removing dust from an air suction filter attached to a supercharger for supplying air to a combustor of a marine engine. A cleaning device that cleans the filter by rotating the arm, a rotatably supported arm, a nozzle movably attached to the arm along the back surface of the filter, and a pressurized gas supplied to the nozzle. Means, a means for supplying a cleaning liquid to the nozzle, and a dust receptacle movably provided along the surface of the filter so as to follow the nozzle and receive foreign matter detached from the filter. .

In this case, it is preferable that the air nozzle has an outlet for blowing air obliquely toward the dust receiver, and the air nozzle and the dust receiver are preferably provided with a rotational propulsion force by the air blown from the outlet.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Various preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

As shown in FIG. 1, a supercharger 2 and a compressor 4 are mounted on a gas turbine engine 1 of a marine engine. The gas turbine engine 1 includes a rotating shaft 6 of a compressor 4.
And a so-called two-shaft regenerative type engine having a turbine 5 for driving the compressor and an output turbine 7 for driving the screw.
And the output turbine 7 are rotated, and the compressor 4 is supplied from the supercharger 2 by rotating the impeller 41 and the scroll 42 which are coaxial with the compressor turbine 5. The air taken into the supercharger 2 is sent to a combustor via a heat exchanger (not shown) after rotating the impeller 41 and the scroll 42, and burns fuel to become a combustion gas from the gas inlet 8. After rotating the turbines 5 and 7 in the inner case, it is sent to a heat exchanger (not shown) through the gas outlet 9 and is exhausted to the outside after heat exchange with cold air.

As shown in FIG. 2, the main body of the supercharger 2 is composed of a drum-shaped silencer, both side surfaces of which are closed by side plates 26, and an air suction portion 21 is formed on the outer periphery thereof. The air suction portion 21 has a structure having a sound deadening function. A filter 22 is provided so as to cover the air suction portion 21.
Is mounted to remove dust and oil droplets from the intake air.

As shown in FIG. 3, the filter 22 is detachably mounted on the supercharger 2. That is, the band-shaped filter 22 has both ends bonded by the magic tape 23 to form an annular shape, and is fastened by the two fastening bands 24. Both ends in the width direction of the filter 22 are attached to the respective side plates 26 via members (not shown). A manometer 28 is attached to one side plate 26 so that the internal pressure (suction pressure) of the supercharger 2 is always detected.

As shown in FIGS. 2 and 4, a manual cleaning device 3 is attached to the supercharger 2 so that the captured dust is removed from the filter 22. The cleaning device 3 includes an arm 31, a nozzle 32, a blowing hole 32a, a dust receptacle 33, a connecting bar 34, an air hose 35, and a handle 36.
And a rotation shaft 37. One end of the arm 31 is connected to and supported by a rotating shaft 37, and the rotating shaft 37 has a handle 3.
6 is attached. A nozzle 32 is attached to the other end of the arm 31. The nozzle 32 has a pipe shape, and a plurality of blowout holes 32a are opened outward. An air hose 35 connected to a pressurized air supply source (not shown) and a cleaning liquid supply source (not shown) communicates with the nozzle 32. When pressurized air is supplied to the nozzle 32 via the hose 35, pressurized air is blown toward the back surface of the filter 22 from a number of outlets 32 a.

As shown in FIG. 4, the nozzle 32 is disposed between the filter 22 and the air suction section 21. When the handle 36 is turned, the nozzle 32 moves around the back surface of the filter 22. Has become. Further nozzle 32
A dust receiver 33 is attached to the nozzle by a connecting rod 34 and moves around the nozzle 32.

As shown in FIG. 5, the dust receiver 33 is located outside the filter 22 and slightly closer to the rotation downstream side than the nozzle 32. In addition, the plurality of blowout holes 32 a are opened in series in a row slightly downstream from the outermost peripheral portion of the nozzle 32. Each blowout hole 32 a faces toward the concave portion of the dust receptacle 33.

Next, a case where the air suction filter 22 is cleaned using the cleaning device 3 during the operation of the engine will be described.

The suction pressure of the turbocharger 2 is detected by a manometer 28, and when the detected pressure falls below a predetermined threshold, the handle 36 is slowly turned and the suction pressure is applied to the nozzle 32 through the hose 35. Supply pressurized air and a cleaning liquid (eg, soapy water). As a result, the outlet hole 32a
The cleaning liquid accelerated by the pressurized air is blown toward the back surface of the filter 22, and the cleaning liquid penetrates the filter 22 to remove foreign substances (dust and oil droplets) from the filter 22. The foreign matter detached from the filter 22 is received by the dust receiver 33.

At this time, the nozzle 32 is given a clockwise rotational force by the air blowing output, so if the handle 36 is turned only at the start of the cleaning, the cleaning device 3 is automatically revolved only by the air blowing output thereafter. It can also be done. For example, the pressure of the pressurized air is reduced in the initial stage of the cleaning, the pressure is increased in the middle of the cleaning, and the cleaning device 3 is automatically circulated, and the pressure is reduced in the latter stage of the cleaning to stop the circulating movement of the cleaning device 3. Let it.

Next, only the pressurized air is supplied to the nozzle 32 through the hose 35 while turning the handle 36. Thereby, pressurized air is blown toward the filter 22 from the outlet 32a, and the filter 22 wet with the cleaning liquid is dried. If foreign matter accumulates in the concave portion of the dust receptacle 33, it is removed using an appropriate cleaning tool.

In the above-described embodiment, the case of a supercharger of a type in which air is sucked from the outer peripheral portion to the central portion of the silencer has been described. However, the present invention is not limited to this. The cleaning device of the present invention may be applied to a supercharger of a type that sucks air.

In the above-described embodiment, the case where the nozzle outlet is oriented in a fixed direction has been described. However, the present invention is not limited to this, and the direction of the nozzle outlet can be changed. Alternatively, the nozzle may be attached to the arm.

In the above embodiment, the case where the concave portion of the dust receptacle is oriented in a certain direction has been described. However, the present invention is not limited to this, and the direction of the concave portion of the dust receptacle can be changed. A dust pan may be attached to the connecting rod.

According to the cleaning device of the above embodiment, since the air blowing output is added to the circulating force of the nozzle and the dust receiver,
The operator does not need to turn the handle, or does not need to turn the handle at all, greatly reducing the cleaning work.

[0024]

As described above, according to the present invention, the filter can be easily washed without stopping the engine and without removing the filter even during operation. As a result, the frequency of engine stoppage can be greatly reduced,
The operating rate of the engine is improved.

In particular, since dust can be removed from the filter only by a simple operation even during engine operation other than the periodical inspection, the frequency of cleaning of the filter can be increased as compared with the prior art, and the supercharging can be performed. The adverse effects on the engine, such as surging and output reduction due to insufficient air supply from the machine, are greatly reduced.

[Brief description of the drawings]

FIG. 1 is an internal perspective sectional view showing a gas turbine engine of a marine engine.

FIG. 2 is a perspective view showing a cleaning device of the air suction filter of the supercharger according to the embodiment of the present invention.

FIG. 3 is an exploded perspective view showing a part of the supercharger.

FIG. 4 is an internal perspective cross-sectional view showing a cleaning device of the air suction filter of the supercharger according to the embodiment of the present invention.

FIG. 5 is a partially enlarged cross-sectional view showing a cleaning device of the air suction filter of the supercharger according to the embodiment of the present invention.

[Explanation of symbols]

 2 ... supercharger, 21 ... air suction part, 22 ... filter, 23 ... magic tape, 24 ... band, 26 ... side plate, 28 ... manometer, 3 ... cleaning device, 31 ... arm, 32 ... nozzle, 32a ... outlet 33, a dust catcher, 34, a connecting rod, 35, an air hose, 36, a handle, 37, a rotating shaft, 4, a compressor, 41, an impeller, 42, a scroll, 5 ... a compressor driving turbine, 6 ... a rotating shaft, 7 ... Power turbine 8 ... Combustion gas inlet 9 ... Exhaust

Claims (2)

[Claims] 1. A cleaning device for cleaning a filter by removing dust from an air suction filter attached to a supercharger for supplying air to a combustor of a marine engine, wherein the filter is rotatably supported. An arm, a nozzle attached to the arm movably along the back surface of the filter, a means for supplying a pressurized gas to the nozzle, a means for supplying a cleaning liquid to the nozzle, and A dust receiver movably provided following the nozzle and receiving a foreign substance detached from the filter; and a dust collecting device for the air suction filter of the supercharger. 2. The air nozzle has a blow-off hole for blowing air obliquely toward the dust receiver, and the air nozzle and the dust receiver are provided with a rotational propulsion force by the air blown out from the blow-off hole. The cleaning device for a supercharger air suction filter according to claim 1.