JP6572838B2 - Air leakage detection method and air leakage detection system in a Dwightroid type sintering machine - Google Patents

Description

  The present invention relates to a detection method and a detection system for detecting air leakage from a seal portion by an air seal plate provided in a pallet truck in a dwelloid type sintering machine.

  The Dwightroid-type sintering machine is one in which a plurality of connected pallet carts move continuously on an endless track, and a plurality of pallet carts along the track at a position below the pallet cart that moves on the upper side of the endless track. Wind boxes are installed continuously. For the pallet truck moving on the upper end of the endless track, a sintered raw material in which coke powder and lime powder are mixed in iron ore is charged from the raw material hopper, and the coke on the surface of the raw material charging layer is ignited by an ignition device. In addition to igniting, air is sucked from the wind box below the pallet carriage with an intake device (exhaust) to burn the coke in the raw material charging layer and sinter the iron ore with the combustion heat. Manufacturing.

  In order to efficiently suck air through the wind box, it is necessary to ensure the airtightness between both sides (side walls) of the pallet truck and the wind box. At the lower end, an air seal plate (also referred to as an air seal bar) is provided to contact the upper end of the wind box to form a seal portion. The air seal plate is slidably brought into contact with the upper end of the wind box by being biased by a spring, and slides on the upper end surface (slide bed surface) of the wind box as the pallet carriage moves.

  In the dwy-toroid type sintering machine, unnecessary gaps are generated between the pallets and the seal portion by the air seal plate due to wear and corrosion due to long-term use, and outside air enters from the gaps and air leakage occurs. FIG. 6 shows a state in which air leakage is generated from the gap between the air seal plates (seal portions). 1 is a pallet cart, 2 is a wind box, and 3 is an air seal plate provided at the lower end of both sides of the pallet cart 1. is there. The air seal plate 3 is urged by a built-in spring 8, and the tip of the air seal plate 3 abuts on the upper end of the wind box 2 to form a seal portion, while the upper end surface of the wind box ( Although sliding on the slide bed surface), if a gap is generated in the seal portion due to wear or corrosion due to long-term use, air leakage as shown in the figure occurs.

If air leakage occurs, the amount of air flowing to the raw material charging layer on the pallet truck will decrease, and the raw material charging layer will be insufficiently fired. It is necessary to increase the amount and supplement the air flow rate to the raw material charging layer. For this reason, the electric power consumption which drives an air intake device increases, and the manufacturing cost of a sintered ore will increase.
Conventionally, for example, the following proposals have been made as a technique for detecting air leakage in a Dwytroid type sintering machine.

In Patent Document 1, when a gas lower than the outside air temperature is generated from dry ice, liquid nitrogen, or the like, and the thermometer installed in the sintering machine is lowered, the detection of the leak is determined as a leak from the leak test location. The method is shown.
In Patent Document 2, the oxygen concentration in the wind box is measured by an oxygen sensor, and a pallet cart whose oxygen concentration is higher than a threshold value is recognized by reading a two-dimensional code displayed on the pallet cart. A method is shown in which a pallet to be repaired preferentially for reduction can be specified.

JP 2014-169796 A International Publication No. 2011/108532

However, in the method of Patent Document 1, it is necessary to continuously generate gas by the side of the sintering machine, and the worker is restrained for a long time, so that there is a problem that continuous implementation is difficult.
In addition, in the method of Patent Document 2, since it is possible to evaluate the leakage of air due to the oxygen concentration, there is a possibility that a defective pallet can be identified, but even if a defective pallet can be identified, the air leaks from anywhere on the pallet truck. In other words, there is a problem that it is not possible to determine whether the air is leaking from the seal portion of the air seal plate or the air is leaking from other locations.

  Therefore, the object of the present invention is to solve the above-mentioned problems of the prior art, to constantly monitor the air leakage in the dwy-toroid type sintering machine, and to accurately detect the air leakage from the seal portion of the air seal plate. It is an object of the present invention to provide a detection method and a detection system capable of performing the above.

  In general, for structural reasons of the pallet truck, the air seal plate and the seal portion thereby are hidden behind the carriage side plate, and most of them cannot be seen from the outside, but the connecting portion of adjacent pallet trucks (i.e. At the front end and the rear end of each pallet truck, the air seal plate and the end portion of the seal portion thereby are slightly exposed from the cart side plate and can be visually recognized from the outside. The present inventors pay attention to this point, and as a result of repeated investigations on a method that can always monitor the air leakage and accurately detect the air leakage from the seal portion of the air seal plate, the gap between the seal portions of the air seal plate that can be visually recognized from the outside. Developed a method to accurately identify the pallet truck that has leaked air from the seal part of the air seal plate based on the measured value and the oxygen concentration value measured in the wind box. did.

That is, the gist of the present invention for solving the above problems is as follows.
[1] A droidoid sintering machine provided with an air seal plate (3) for slidably abutting the upper end of a wind box (2) to form a seal portion on each pallet carriage (1), A detection method for detecting air leakage from a seal portion by an air seal plate (3),
For each pallet truck (1) passing over any one wind box (2a), the following measurements (i) to (iii) are performed and read:
(I) The oxygen concentration in the wind box (2a) is measured by the oxygen concentration sensor (A) to obtain a measured value x of the oxygen concentration.
(Ii) The size of the gap of the seal portion by the air seal plate (3) is measured by the optical measuring device (B), and the measured value y of the gap is obtained.
(Iii) The pallet number of the pallet carriage (1) is read by the reading device (C).
Dwight characterized by identifying a pallet carriage (1) leaking air from a seal portion by an air seal plate (3) based on measured values x and y associated with a pallet number read by a reader (C) A method for detecting air leakage in a Lloyd sintering machine.

[2] In the air leak detection method of [1] above, it is determined that the pallet cart (1) having the measured values x and y equal to or greater than a predetermined threshold value is leaking from the seal portion by the air seal plate (3). A method for detecting leakage of air in a dwelloid-type sintering machine.
[3] In the air leak detection method of [1] or [2] above, the optical measurement device (B) uses the air seal plate (3) at the front end position and / or the rear end position of the pallet carriage (1). A method for detecting air leakage in a dweroid-type sintering machine, characterized in that the size of a gap is measured.
[4] In the air leakage detection method according to any one of [1] to [3], the optical measurement device (B) includes a camera for photographing the seal portion by the air seal plate (3), and images captured by the camera are imaged. A method for detecting air leakage in a dwy-toroid type sintering machine, characterized in that the size of a gap in a seal portion is determined by processing.
[5] In the air leakage detection method according to any one of [1] to [4], the reading device (C) includes a camera that captures the pallet number displayed on the pallet carriage (1), and an image captured by the camera. To detect a pallet number by image processing, and detecting a leak in a Dwytroid type sintering machine.

[6] A droidoid sintering machine provided with an air seal plate (3) for slidably abutting the upper end of the wind box (2) on each pallet carriage (1) to form a seal portion, A detection system for detecting air leakage from a seal portion by an air seal plate (3),
An oxygen concentration sensor (A) for measuring the oxygen concentration in any one wind box (2a);
An optical measuring device (B) for measuring the size of the gap of the seal portion by the air seal plate (3) of the pallet carriage (1) passing through the wind box (2a);
A reader (C) for reading the pallet number of the pallet carriage (1) passing through the wind box (2a);
A measured value x of the oxygen concentration in the wind box (2a) measured by the oxygen concentration sensor (A), a measured value y of the clearance of the seal portion by the air seal plate (3) measured by the optical measuring device (B), and reading Storage means (D) for storing the pallet number of the pallet carriage (1) read by the device (C);
An air leakage detection system in a Dwytroid type sintering machine, comprising display means (E) for displaying the pallet number stored in the storage means (D) in correspondence with the measured values x and y.
[7] In the air leakage detection system of [6], the display means (E) displays a warning for the pallet truck (1) whose measured values x and y are equal to or greater than a predetermined threshold value. Leakage detection system in the Dwytroid type sintering machine.

[8] A droidoid sintering machine provided with an air seal plate (3) for slidably abutting the upper end of the wind box (2) on each pallet carriage (1) to form a seal portion, A detection system for detecting air leakage from a seal portion by an air seal plate (3),
An oxygen concentration sensor (A) for measuring the oxygen concentration in any one wind box (2a);
An optical measuring device (B) for measuring the size of the gap of the seal portion by the air seal plate (3) of the pallet carriage (1) passing through the wind box (2a);
A reader (C) for reading the pallet number of the pallet carriage (1) passing through the wind box (2a);
A measured value x of the oxygen concentration in the wind box (2a) measured by the oxygen concentration sensor (A), a measured value y of the clearance of the seal portion by the air seal plate (3) measured by the optical measuring device (B), and reading Storage means (D) for storing the pallet number of the pallet carriage (1) read by the device (C);
Determination means (F) for identifying the pallet carriage (1) leaking air from the seal portion by the air seal plate (3) based on the measured values x, y associated with the pallet numbers stored in the storage means (D) The air leakage detection system in the Dwightroid type sintering machine, characterized by comprising:

[9] In the air leakage detection system according to [8], the determination means (F) is configured so that the pallet carriage (1) whose measured values x and y are equal to or greater than a predetermined threshold value is sealed from the seal portion by the air seal plate (3). An air leakage detection system in a dwelloid type sintering machine, characterized in that it is determined that there is an air leakage.
[10] In the air leakage detection system according to any one of [6] to [9], the optical measurement device (B) is based on the air seal plate (3) at the front end position and / or the rear end position of the pallet carriage (1). An air leakage detection system in a droidoid type sintering machine, characterized in that it can measure the size of a gap in a seal portion.
[11] In the air leakage detection system according to any one of [6] to [10], the optical measurement device (B) includes a camera for photographing the seal portion by the air seal plate (3), and images captured by the camera are imaged. An air leakage detection system in a dweroid type sintering machine, characterized in that the size of a gap in a seal portion is determined by processing.
[12] In the air leak detection system according to any one of [6] to [11], the reading device (C) includes a camera that captures the pallet number displayed on the pallet carriage (1), and a captured image of the camera. The air leakage detection system in the Dwightroid type sintering machine is characterized in that the pallet number is identified by image processing.

  The air leakage detection method and system of the present invention uses the oxygen concentration measured in the wind box of the sintering machine and the size of the gap of the air seal plate (seal part) measured by the optical measuring device. The air leakage can be monitored continuously at all times, and the pallet truck generating the air leakage from the seal portion of the air seal plate can be accurately identified. For this reason, it is possible to accurately repair the pallet truck that has leaked air from the sealing portion of the air seal plate, and to reduce the power consumption of the intake device, thereby reducing the manufacturing cost of the sintered ore. it can.

Explanatory drawing which shows the sintering machine position (wind box) which performs an air leak detection in one Embodiment of this invention. In one embodiment of the present invention, for a wind box and a plurality of pallet trucks moving on the wind box, the oxygen concentration measurement position, the measurement position of the gap of the air seal plate (seal part), the pallet number to be read, etc. are schematically shown. Explanatory diagram shown in Explanatory drawing which shows typically the clearance gap which arose in the air seal board (seal part) in the connection part of the adjacent pallet truck of FIG. In one embodiment of the present invention, in the state where the width direction of the wind box and the pallet carriage is longitudinally sectioned, the installation positions of the oxygen concentration sensor, the camera for photographing the gap of the air seal plate (seal part), and the camera for photographing the pallet number are set. Explanatory diagram schematically In an embodiment of the present invention, for a wind box and a plurality of pallet trucks moving on the wind box, the oxygen concentration measurement position, the measurement position of the air seal plate (seal part) gap, the pallet number to be read, etc. are schematically shown. Illustration showing Explanatory drawing which shows a mode that the air leak has arisen from the clearance gap between air seal boards (seal part).

  FIG. 1 is an overall view of a dwelloid type sintering machine, and shows a sintering machine position (wind box) for detecting air leakage in the present embodiment. In the figure, 1 is a pallet truck, 2 is a wind box, 9 is a raw material charging device, 10 is a hopper for sintering raw material, 11 is a hopper for flooring, 12 is an ignition device, 13 is an excavation section, and 20 is each window. The wind leg S in box 2 is a raw material charging layer. In the present embodiment, the position of the sintering machine for detecting the air leakage is above the wind box 2a in which the oximeter is installed. The position of the sintering machine for detecting this air leakage is preferably set in a range from the completion of ignition of the raw material charging layer S in the pallet carriage 1 to the completion of the sintering reaction. This is because the air sucked from the top of the pallet truck 1 flows into the wind box 2 without being used for combustion at a position before ignition or after completion of the sintering reaction, so that it is difficult to detect fluctuations in oxygen concentration.

FIG. 2 shows the measurement position of the oxygen concentration, the measurement position of the clearance of the air seal plate (seal part), the pallet number to be read, etc. for the wind box 2a for detecting the air leakage and the plurality of pallet carts 1 moving on the wind box It is shown schematically. As shown in FIG. 2, two or three moving pallet trucks 1 are positioned on one window box 2a.
FIG. 3 schematically shows a gap generated in the air seal plate 3 (seal part) in the connecting part between adjacent pallet trucks 1 _X and 1 _Y in FIG. 2, and this connecting part, that is, both pallet trucks. At the front end and the rear end of 1 _X and 1 _Y, the seal portion by the air seal plate 3 is exposed from the side plate 6 of the pallet carriage. In FIG. 3, reference numeral 7 denotes a gap formed in a seal portion (a seal portion between the air seal plate 3 and the upper end surface of the wind box 2a). If such a gap 7 is generated due to wear of the air seal plate 3, etc. Leakage of air is generated.

In this embodiment, as shown in FIG. 4, an oxygen concentration sensor A for measuring the oxygen concentration in the wind box 2 a is installed and displayed on the pallet carriage 1 and the camera 4 for photographing the seal portion by the air seal plate 3. Each of the cameras 5 for photographing the pallet numbers is installed outside the machine (side position of the sintering machine). The camera 4 constitutes an optical measurement device B that measures the size of the gap between the seal portions by the air seal plate 3, and this optical measurement device B performs image processing on the photographed image of the camera 4 and performs the processing of the seal portion. Find the size of the gap. The camera 5 constitutes a pallet number reading device C for each pallet carriage 1, and the reading device C performs image processing on the image captured by the camera 5 to identify the pallet number.
In FIG. 4, the air leakage detecting means such as the oxygen concentration sensor A, the optical measuring device B (camera 4 or the like) and the reading device C (camera 5 or the like) is arranged on one side (toward the paper surface) in the sintering machine width direction. Although only shown on the left side, the same air leakage detection means is also installed on the other side in the width direction of the sintering machine (on the right side of the paper) to detect the air leakage.

In the present invention, the following measurements (i) to (iii) are performed and read for each pallet truck 1 passing over the wind box 2a.
(I) The oxygen concentration sensor A measures the oxygen concentration in the wind box 2a, and obtains the measured value x of the oxygen concentration.
(Ii) The size of the gap of the seal portion by the air seal plate 3 is measured by the optical measuring device B, and the measured value y of the gap is obtained.
(Iii) The reading device C reads the pallet number of the pallet carriage 1.

  The oxygen concentration sensor A is installed in the wind leg 20 (the upper end position of the window leg 20) constituting the wind box 2a. As the oxygen concentration sensor A, for example, a probe type zirconia type or the like can be used, but any type can be used as long as it has durability against high temperature and dust and can accurately measure the concentration. As described above, if the oxygen concentration sensor A is installed in the wind box 2a so that the oxygen concentration can be continuously measured, it is possible to determine the air leakage.

As the camera 4 constituting the optical measuring device B, a CCD camera or the like can be used. FIG. 2 and FIG. 3 show the shooting locations by the camera 4. And the rear end of the pallet truck 1 _X the preceding, at the front end of the pallet truck 1 _Y to trailing, the seal portion by the air seal plate 3 from the side plate 6 of the pallet truck is exposed, to shoot the seal portion. In this case, the sealing portion of the rear end of the preceding pallet truck 1 _X, either the seal portion of the front end of the pallet truck 1 _Y to trailing, or both can be the imaging target.

In the optical measurement apparatus B, the image processing controller 14 binarizes the density of the image captured by the camera 4, determines a pixel having a density equal to or higher than a predetermined threshold value as a gap, and the size of the gap from the number of pixels × conversion coefficient. Ask for. When shooting the seal portion (gap) with the camera 4, if there is a shadow on the object to be photographed, it may interfere with the determination of the shading. preferable.
A CCD camera or the like can also be used for the camera 5 constituting the reading device C. As shown in FIG. 2, a pallet number is displayed on the side plate or the like of each pallet carriage 1, and the pallet number is photographed by the camera 5. Also in the reading device C, the image processing controller 15 performs image processing on the image captured by the camera 5 by the method according to the above, and reads the palette number.

  In the present invention, the measurement value x (measurement value x of the oxygen concentration in the wind box 2a) associated with the pallet number read by the reader C and the measurement value y (measurement of the gap of the seal portion by the air seal plate 3) are measured. Based on the value y), the pallet carriage 1 that has leaked air from the seal portion by the air seal plate 3 is specified. That is, the measured value x of the oxygen concentration in the wind box 2a measured by the oxygen concentration sensor A when the pallet truck 1 associated with the pallet number read by the reading device C passes over the wind box 2a, and the optical Based on the measured value y of the gap of the seal portion by the air seal plate 3 measured by the measuring device B, the pallet carriage 1 that has leaked air from the seal portion by the air seal plate 3 is specified.

When the measured value x of the oxygen concentration in the wind box 2a becomes high, it can be determined that there is a high possibility that air leakage has occurred from any of the pallet trucks 1 passing over the wind box 2a. Further, when the measured value x of the oxygen concentration becomes high, if there is a pallet cart 1 having a large measured value y of the gap in the seal portion, the pallet cart 1 leaks from the seal portion by the air seal plate 3. Judgment can be made.
For this reason, a predetermined threshold is set for the oxygen concentration in the wind box 2a and the size of the gap between the seal portions of the air seal plate 3, and the measured value x of the oxygen concentration in the wind box 2a and the air seal plate 3 are used. It is preferable to determine that the pallet carriage 1 in which the measured value y of the clearance between the seal portions is equal to or greater than the threshold value is leaking from the seal portion by the air seal plate 3.

  In the method of the present invention, the oxygen concentration in the wind box measured by the oxygen concentration sensor A and the gap between the seal portions of the air seal plate 3 measured by the optical measuring device B are not entrusted to the individual evaluation criteria of the worker. Since the quantitative evaluation based on the size is performed, it is possible to accurately identify the pallet carriage 1 in which air leakage occurs from the seal portion of the air seal plate 3.

  In one embodiment of the detection system provided for carrying out the air leakage detection method of the present invention as described above, the oxygen concentration sensor A and the optical measurement device B (for example, an optical measurement device including the camera 4 and the image processing controller 14). In addition to the reading device C (for example, an optical measuring device including the camera 5 and the image processing controller 15), it has storage means D and display means E (solid line in FIG. 4). Among these, the storage means D reads the measured value x of the oxygen concentration in the wind box 2a measured by the oxygen concentration sensor A, the measured value y of the clearance of the seal portion by the air seal plate 3 measured by the optical measuring device B, and the reading. The pallet number of the pallet carriage 1 read by the device C is stored. The display means E displays the pallet number stored in the storage means D in correspondence with the measurement values x and y (displays the pallet number linked with the measurement values x and y). It is preferable to display a warning for the pallet truck (1) in which x and y are each equal to or greater than a predetermined threshold.

Further, in another embodiment of the detection system provided for carrying out the air leakage detection method of the present invention, instead of the display means E, the measurement values x, y associated with the pallet numbers stored in the storage means D are used. On the basis of this, it has the determination means F which pinpoints the pallet truck 1 which has leaked from the seal part by the air seal plate 3 (imaginary line in FIG. 4). It is preferable that this determination means F determines that the pallet cart 1 in which the measured values x and y are equal to or greater than a predetermined threshold value is leaking from the seal portion by the air seal plate 3.
Here, the storage unit D (storage unit), the display unit E (display unit), and the determination unit F (determination unit) are units realized based on the functions of the computer.

  In the embodiment described above, the optical measuring device B is provided with the camera 4 (CCD camera or the like) and the image processing controller 14, and the reading device C is the camera 5 (CCD camera or the like) and the image processing controller 15. Although what was equipped was used, it is not limited to this, For example, the apparatus which calculates and reads a clearance gap by irradiating a laser beam and receiving the reflected light can also be used as the optical measuring apparatus B.

  In the actual operation of the Dwytroid-type sintering machine, air leakage detection was performed according to the embodiment shown in FIGS. Table 1 shows data when the pallet truck 1 with pallet numbers 129, 13, 111, and 21 (serial numbers 38 to 41) passes over the wind box 2a in one period of operation, that is, the oxygen sensor A. The measured value x of the measured oxygen concentration, the measured value y of the gap of the seal portion by the air seal plate 3 measured by the optical measuring device B, and the pallet number read by the reading device C, are displayed on the monitoring screen displayed on the display unit E. is there. FIG. 5 shows measurement positions of a plurality of pallet trucks 1 that are moving on the wind box 2a during an operation period, an oxygen concentration measurement position by the oxygen concentration sensor A, and an air seal plate (seal part) by the optical measurement device B. The pallet numbers read by the reading device C are schematically shown. The data on the south side and the north side shown in Table 1 are data obtained by detecting air leakage on both sides (south side and north side) with respect to the sintering machine pallet moving direction.

In the photographing of the seal portion by the camera 4 of the optical measuring device B, as shown in FIG. 3, the “rear end seal portion” of the preceding pallet carriage 1 _X and the “front end seal portion of the subsequent pallet carriage 1 _Y ” are shown. "Is shot at the same time. Here, in Table 1, for example, in the case of the pallet truck with serial number 40 and pallet number 111, the measured value x of the oxygen concentration is obtained when the gap of the “front end seal portion” of the pallet truck is measured. That is, the measured value x (north side: 8.80 vol%, south side: 8.22 vol%) of the oxygen concentration and the measured value y (north side front end: 0.0 mm, south side front end: 0.02 vol%). 6 mm) is data measured simultaneously. On the other hand, in the same pallet number, the measured value y of the gap of the “rear seal portion” (north rear end: 0.7 mm, south rear end: 0.0 mm) is the subsequent serial number 41, pallet number 21. It is the data obtained simultaneously when measuring the clearance of the "front end seal part" of the pallet truck. The above relationship is the same for the pallet trucks with other serial numbers and pallet numbers.

  In this embodiment, the threshold value of the oxygen concentration in the wind box 2a was set to 9.1 vol%, and the threshold value of the gap between the seal portions by the air seal plate 3 was set to 4.1 mm. On the south side of the pallet truck with serial number 41 and pallet number 21, the measured value x of the oxygen concentration is 9.50 vol%, the measured value y of the gap at the “rear seal portion” is 4.5 mm, and the measured values x, y Since both were above the threshold value, a warning was displayed on the pallet truck on the display unit E, and it was determined that there was an air leak at the south rear end of the pallet truck. On the other hand, on the north side of the pallet truck with serial number 38 and pallet number 129, the measured value x of the oxygen concentration is 9.18 vol%, which is equal to or greater than the threshold value. Therefore, in the display unit E, no warning is displayed on the pallet truck, and it was not determined that there was an air leak.

A oxygen concentration sensor B optical measuring device C reading device D storage device E display device F determination device 1, 1 _X , 1 _Y pallet carriage 2, 2a window box 3 air seal plate 4, 5 camera 6 side plate 7 gap 8 spring 9 raw material installation Loading device 10 Sintered raw material hopper 11 Floor covering hopper 12 Ignition device 13 Excavation section 14, 15 Image processing controller 20 Wind leg S Raw material charging layer

Claims (10)

In a droidoid sintering machine in which each pallet carriage (1) is provided with an air seal plate (3) for slidably abutting the upper end of a wind box (2) to form a seal portion, an air seal plate ( 3) a detection method for detecting air leakage from the seal portion according to
For each pallet truck (1) passing over any one wind box (2a), the following measurements (i) to (iii) are performed and read:
(I) The oxygen concentration in the wind box (2a) is measured by the oxygen concentration sensor (A) to obtain a measured value x of the oxygen concentration.
(Ii) Using the optical measuring device (B), measure the size of the gap of the seal portion by the air seal plate (3) at the front end position and / or the rear end position of the pallet carriage (1), and obtain the measured value y of the gap. obtain.
(Iii) The pallet number of the pallet carriage (1) is read by the reading device (C).
Dwight characterized by identifying a pallet carriage (1) leaking air from a seal portion by an air seal plate (3) based on measured values x and y associated with a pallet number read by a reader (C) A method for detecting air leakage in a Lloyd sintering machine.   2. A droidoid according to claim 1, wherein the pallet cart (1), whose measured values x and y are each equal to or greater than a predetermined threshold value, is determined to be leaking air from the sealing portion by the air seal plate (3). Detection method of air leakage in a ceramic sintering machine. The optical measuring device (B) includes a camera for photographing the seal portion by the air seal plate (3) at the front end position and / or the rear end position of the pallet carriage (1), and performs image processing on the photographed image of the camera and seals it. Mokaze detection method in Dwight Lloyd type sintering machine as claimed in claim 1 or 2, characterized in that to calculate the size of the section of the gap. Reader (C) is provided with a camera for capturing the displayed palette number to the pallet truck (1), according to claim 1 to 3, characterized in that identifying the palette number captured image of the camera image processing to The air leak detection method in the dwyroid type sintering machine according to any one of the above. In a droidoid sintering machine in which each pallet carriage (1) is provided with an air seal plate (3) for slidably abutting the upper end of a wind box (2) to form a seal portion, an air seal plate ( 3) a detection system for detecting air leakage from the seal portion according to
An oxygen concentration sensor (A) for measuring the oxygen concentration in any one wind box (2a);
An optical measuring device (B) for measuring the size of the gap of the seal portion by the air seal plate (3) at the front end position and / or rear end position of the pallet carriage (1) passing through the wind box (2a);
A reader (C) for reading the pallet number of the pallet carriage (1) passing through the wind box (2a);
A measured value x of the oxygen concentration in the wind box (2a) measured by the oxygen concentration sensor (A), a measured value y of the clearance of the seal portion by the air seal plate (3) measured by the optical measuring device (B), and reading Storage means (D) for storing the pallet number of the pallet carriage (1) read by the device (C);
An air leakage detection system in a Dwytroid type sintering machine, comprising display means (E) for displaying the pallet number stored in the storage means (D) in correspondence with the measured values x and y. Display means (E) is the measured value x, y are each pallet truck becomes equal to or larger than a predetermined threshold value (1), Dwight Lloyd type sintering according to claim 5, characterized in that the warning Air leakage detection system in the machine. In a droidoid sintering machine in which each pallet carriage (1) is provided with an air seal plate (3) for slidably abutting the upper end of a wind box (2) to form a seal portion, an air seal plate ( 3) a detection system for detecting air leakage from the seal portion according to
An oxygen concentration sensor (A) for measuring the oxygen concentration in any one wind box (2a);
An optical measuring device (B) for measuring the size of the gap of the seal portion by the air seal plate (3) at the front end position and / or rear end position of the pallet carriage (1) passing through the wind box (2a);
A reader (C) for reading the pallet number of the pallet carriage (1) passing through the wind box (2a);
A measured value x of the oxygen concentration in the wind box (2a) measured by the oxygen concentration sensor (A), a measured value y of the clearance of the seal portion by the air seal plate (3) measured by the optical measuring device (B), and reading Storage means (D) for storing the pallet number of the pallet carriage (1) read by the device (C);
Determination means (F) for identifying the pallet carriage (1) leaking air from the seal portion by the air seal plate (3) based on the measured values x, y associated with the pallet numbers stored in the storage means (D) The air leakage detection system in the Dwightroid type sintering machine, characterized by comprising: The determination means (F) determines that the pallet truck (1) having measured values x and y equal to or greater than a predetermined threshold value is leaking from the seal portion by the air seal plate (3). The air leakage detection system in the dweroid type sintering machine according to claim 7 . The optical measuring device (B) includes a camera for photographing the seal portion by the air seal plate (3) at the front end position and / or the rear end position of the pallet carriage (1), and performs image processing on the photographed image of the camera and seals it. Mokaze detection system in Dwight Lloyd type sintering machine according to any of claims 5 to 8, characterized in that to calculate the size of the section of the gap. The reading device (C) includes a camera that captures a pallet number displayed on the pallet carriage (1), and identifies the pallet number by performing image processing on a captured image of the camera. The air leak detection system in the Dwightroid type sintering machine according to any one of 5 to 9 .

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