JP2735766B2 - Garbage incinerator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stoker-type conveying means for conveying dust while incinerating the same, an imaging means for imaging a combustion state of the dust on the conveying means from a downstream side of the conveying means, and A burn-off position determining means for determining a burn-off position of dust based on image data obtained by the imaging means; and a conveying speed of the dust by the transport means based on the burn-off position determined by the burn-off position determining means. The present invention relates to a refuse incinerator provided with a speed control means for adjusting the temperature.

[0002]

2. Description of the Related Art In this kind of refuse incinerator, as shown in FIG. 6, an image pickup means is mounted on a downstream side of a transfer means and in a posture facing a transfer path surface from above. As shown in FIG. 7, a boundary between a flame and a dust layer is determined by edge detection processing of luminance data from image data obtained by such an imaging unit, and a boundary of a transport path corresponding to a scanning line position where edge data is present. The position was determined to be the burnout position.

[0003]

However, in the above-mentioned conventional incinerator, the thickness of the flame becomes thin when there is a lump of unburned refuse at the upstream side of the burn-out point of the flame. Since the edge due to the edge processing is not accurately detected, the burn-off position may be detected to be on the upstream side of the actual position, and the burning of dust does not necessarily proceed in the width direction of the transport path in parallel. However, the detected edge is rarely parallel to the scanning line, and the burn-out position cannot be detected accurately enough to require complicated image processing. If it is detected that the burn-out position is on the upstream side of the actual position, the conveyance speed is adjusted based on such a burn-out position, and as a result, the amount of unburned dust generated may increase. Was. SUMMARY OF THE INVENTION An object of the present invention is to provide a refuse incinerator provided with an imaging means and a burn-off position determining means capable of accurately determining the burn-off position of dust with an extremely simple configuration while solving the above-mentioned conventional disadvantages. .

[0004]

In order to achieve this object, a garbage incinerator according to the present invention is characterized in that a burn-out position determining means is provided in an area which is determined to be a flame distributed in the width direction of a conveying path of image data. Recognize the length of the transport path as the width that is the larger of the lengths from the center of the transport path to the left or right end as the width of the transport path, and set the position corresponding to the width in perspective to the burnout position. In that it is configured to determine In the above-described configuration, it is preferable that the imaging unit is disposed on an extension surface of a transportation path surface of the transportation unit.

[0005]

In other words, according to the image obtained via the image pickup means, the width of the transport path becomes wider toward the downstream side and becomes narrower toward the upstream side. The length over both ends of the flame distribution area is defined as the width of the transport path at the burn-out position, and a position corresponding to the width is determined as the burn-out position by the perspective method. here,
If the length from the center of the transport path to the left end or the right end is different due to the unevenness of the combustion state in the width direction on the transport path, the length (downstream side) is doubled the larger length. The position corresponding to the width of the road is determined by the perspective method as the burnout position. If the imaging means is arranged on an extension surface of the conveyance path surface of the conveyance means, both ends of the flame distribution area on the image from which the burn-out position is obtained are always located on substantially the same scanning line. Therefore, image processing becomes easy.

[0006]

According to the present invention, it is possible to provide a refuse incinerator provided with an imaging means and a burn-off position determining means capable of accurately determining the burn-off position of dust with an extremely simple structure. .

[0007]

Embodiments will be described below. As shown in FIG. 4, the incinerator for municipal garbage includes a combustion chamber 1 for incinerating input garbage, a hopper 3 for temporarily storing garbage input to the combustion chamber 1, and an incinerator for the combustion chamber 1. It is provided with an ash pit 4 for collecting the ashes collected.

A lower portion of the hopper 3 is provided with a pusher 3a for pushing the garbage into the combustion chamber 1 little by little. The drying chamber A for drying the garbage introduced by the pusher 3a is burned in the combustion chamber 1. Hydraulically driven stoker-type transport means 5 for transporting while processing in each of the three zones of the combustion zone B and the post-combustion zone C to be incinerated, and blowing air toward the center of the transport means 5 below the left and right side walls 6 thereof. Blower means 7 for cooling the side wall 6 by moving the flame away from the side wall 6 with
A combustion air supply means 8 for supplying combustion air from below the transport means 5 is provided.

A waste heat boiler 10 is provided in a flue 9 provided above the combustion chamber 1. Combustion heat energy generated in the combustion chamber 1 is taken out in the form of steam, and a power generator 11 using a steam turbine is provided. Dedicated to energy. Further, the exhaust gas is exhausted from a chimney 14 through a white smoke prevention device 13 after dust and harmful gas are removed by an exhaust gas treatment facility 12 including an electric dust collector and a wet cleaning device.

An image pickup means 2 for picking up an image of the burning state of the dust on the combustion zone B is provided on the rear wall downstream of the conveying means 5, and the dust is burned off based on the image data from the image pickup means 2. Burn-off position determining means 15 for determining a position;
Computer-based speed control means 16 for adjusting the driving speed of the hydraulic cylinder so as to control the dust transfer speed by the transfer means 5 so that the burn-off position determined by the burn-off position determination means 15 falls within a predetermined range. It is provided. Here, the burn-out position refers to the point at which the refuse on the conveyance path ends gas combustion and shifts to mainly solid combustion. By adjusting the burn-off position within the set range, the amount of unburned refuse can be kept constant. This is an index for suppressing the following.

As shown in FIG. 1, the imaging means 2 is disposed on a rear wall portion of the downstream side of the conveying means 5 on the extension of the conveying path surface 5a of the lower combustion zone B of the conveying means 5. It is. Therefore, as shown in FIG. 2, in the image obtained through the imaging means 2, the transport path surface 5a is grasped as a horizontal straight line L, and dust is generated on the straight line L representing the transport path surface 5a due to the burning of the dust. Flames are observed. The flame width is narrower toward the upstream side and wider toward the downstream side, and the burn-out position is determined from the flame width by paying attention to the fact that the flame is generally generated in the entire width direction of the transport path. That is, the burn-off position determination means 15 recognizes the width of the flame obtained by binarizing the image obtained through the imaging means 2 to separate the flame and other areas as the width of the transport path, For example, it is represented as shown in FIG. That is, if the flame width is narrow as shown in FIG. 3A, the burnout position is on the upstream side, and if the flame width is wide as shown in FIGS. 3B and 3C, the burnout position is on the upstream side. The position corresponding to the width is calculated and derived by the method and determined as the burn-out position. Here, the combustion state of the dust is various, and does not always progress constantly along the width direction of the transport path. As shown in FIG. 5, depending on the distribution of the dust in the transport path, the flame at the end is weak. Sometimes it appears. In such a case, the width of the flame obtained by the binarization processing is not symmetrical to the left and right from the center of the transport path, and is deviated to one of the left and right ends from the center of the transport path on the image data. The above-described processing is performed by recognizing the length twice as large as the length of each of the lengths as the width of the transport path at the burnout position. That is, by always determining that the burn-off position is on the downstream side, it is determined to be on the safe side that suppresses an increase in the amount of unburned dust.

Another embodiment will be described below. Although the installation position of the imaging means 2 is described as being disposed on the extension surface of the conveyance path surface 5a of the combustion zone B on the lower side of the conveyance means 5 and on the downstream rear wall of the conveyance means 5, it is not necessarily required. It is not necessary to match the center of the imaging means 2 with the center in the width direction of the transport path,
They may be staggered. However, since the image data obtained in this case has different left and right distances from the center in the width direction of the transport path, it is necessary to correct the image data by image processing. Although the installation position of the imaging means 2 is described as being disposed on the extension surface of the conveyance path surface 5a of the combustion zone B on the lower side of the conveyance means 5 and on the downstream rear wall of the conveyance means 5, it is not necessarily required. It is not necessary to be on the extension surface of the conveying path surface 5a of the lower combustion zone B of the conveying means 5, and it may be installed in a posture facing the conveying means 5 from the upper space downstream of the conveying means 5.

In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the attached drawings.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a main part.

FIG. 2 is an explanatory diagram of a positional relationship between an imaging unit and a transport unit.

FIG. 3 is an explanatory diagram of an image obtained by an imaging unit.

FIG. 4 is a block diagram of an incinerator.

FIG. 5 is a sectional view of a main part.

FIG. 6 is an explanatory diagram of a positional relationship between an imaging unit and a transport unit in a conventional example.

FIG. 7 is an explanatory diagram of an image obtained by a conventional imaging unit.

[Explanation of symbols]

 2 imaging means 5 transport means 15 burn-out position determination means 16 speed control means

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-64-67523 (JP, A) JP-A-3-170029 (JP, A)

Claims (2)

(57) [Claims] 1. A stoker-type transporting means (5) for transporting garbage while incinerating the same, and an imaging means for imaging a combustion state of the trash on the transporting means (5) from a downstream side of the transporting means (5). (2), a burn-off position determining means (15) for determining a burn-off position of dust based on image data obtained by the imaging means (2), and the burn-off position determining means (15). And a speed control means (16) for adjusting the transfer speed of the refuse by the transfer means (5) based on the burn-out position, wherein the burn-off position determination means (15) is provided. In the area determined to be a flame distributed in the width direction of the transport path of the image data, the length of the transport path width is twice as large as the larger length of the length from the center of the transport path to the left end or the right end. Recognize and correspond to that width in perspective Refuse incinerator is arranged to determine the burnout position location. 2. A refuse incinerator according to claim 1, wherein said image pickup means is disposed on an extension of a transfer path surface of said transfer means.