JP6619502B1 - Solid matter detection device, solid matter management system, and solid matter detection method - Google Patents

Abstract

A solid object detection device capable of accurately detecting a height position of an upper end of a solid object deposited in a storage unit. A detecting device for detecting a granular, chip-like, pellet-like, or powdery solid material deposited in a storage unit, which is at least a part of a predetermined height position in the storage unit. The apparatus includes at least one detection unit configured to detect the presence or absence of solid matter in the detection target range, and at least one ejection unit configured to eject the pressurized fluid toward the detection target range. [Selection diagram] FIG.

Description

  The present disclosure relates to a detection device for detecting granular solids accumulated in a storage unit, a solid management system including the detection device, and a solid detection method using the detection device.

  For example, a cylindrical hopper (storage part) having an upper end opening and a lower end opening is widely known as a storage device for storing solid substances such as woody biomass fuel. The hopper may be provided with a conveying device such as a lower belt conveyor or a screw feeder below the lower end opening (for example, Patent Document 1). The solid material sent from the upper end opening of the hopper to the inside of the hopper is discharged from the lower end opening of the hopper and then transferred by the transfer device. Patent Document 1 discloses a waste supply apparatus including a hopper that stores waste and a conveyor that conveys the waste dropped from the hopper to a waste treatment facility.

  Usually, a microwave type level switch is used as a detecting means for detecting the presence or absence of a solid substance at a predetermined height position in the hopper. The level switch includes a transmitter that emits microwaves having high transparency and a receiver that receives the microwaves. The level switch is configured to output a detection signal when a certain amount of solid matter is deposited between a transmitter and a receiver arranged to face each other.

Japanese Patent No. 5784803

  Solids deposited in the hopper may form deposits that are partially deposited higher than other parts. For example, in a hopper provided with a biaxial screw feeder with a pair of screw shafts arranged in parallel along the horizontal direction, when one screw shaft stops, the solid material is conveyed only by the other screw shaft. Therefore, solid matter is deposited along the wall surface of the hopper located on the side opposite to the other screw shaft with respect to one screw shaft, and the above-described accumulation portion is formed.

  In the level switch, in an environment where the depositing portion is deposited higher than a predetermined height position, the height position of the upper end of the solid material in the other portion other than the depositing portion in the hopper is the predetermined height. Even if the position is lower than the position, there is a possibility that the solid matter in the accumulation part is detected and a detection signal that the solid matter exists at a predetermined height position is issued. In other words, the level switch may output a detection signal that is different from the actual state of the solid matter accumulated in the hopper under the above environment, so that the detection accuracy of the height position of the upper end of the solid matter accumulated in the hopper is lowered. There is a risk of doing.

  In view of the above-described circumstances, an object of at least one embodiment of the present invention is to provide a solid detection device that can accurately detect the height position of the upper end of a solid deposited in a reservoir. .

(1) A solid matter detection device according to at least one embodiment of the present invention includes:
A detection device for detecting solid matter in the form of particles, chips, pellets, or powder deposited in a reservoir,
At least one detection unit configured to detect the presence or absence of the solid matter in a detection target range that is at least a part of a predetermined height position in the storage unit;
And at least one ejection portion configured to eject the pressurized fluid toward the detection target range.

  According to the configuration of (1) above, the solid detection device includes at least one detection unit configured to detect the presence or absence of the solid in the detection target range, and the pressurized fluid toward the detection target range. And at least one ejection portion configured to eject. In this case, even if the deposit part in which the solid matter is partially deposited higher than the other part is formed in the detection target range, the ejection part ejects the pressurized fluid toward the detection target range. Thus, the deposited portion formed in the detection target range can be destroyed. Here, when the accumulation part is formed in the detection target range, the detection unit detects the accumulation part and detects that there is a solid matter in the detection target range. There is a possibility that the position detection accuracy may be lowered. However, by destroying the accumulation part formed in the detection target range by the ejection part, it is possible to prevent the detection part from detecting the accumulation part formed in the detection target range. Object detection accuracy can be improved. Moreover, according to said structure, the height position of the upper end of the solid substance deposited in the storage part can be detected accurately by improving the detection precision of the solid substance in the predetermined height position by a detection part. .

(2) In some embodiments, in the solid matter detection device according to (1), the at least one detection unit includes a plurality of detection units, and each of the plurality of detection units includes: They are spaced apart from each other along the horizontal direction.

  According to the configuration of (2) above, since each of the plurality of detection units is arranged away from each other along the horizontal direction, the presence or absence of solid matter in each detection target range of the plurality of detection units is detected. Can do. According to said structure, the detection accuracy of the solid substance in a predetermined height position can be improved with the detection information which each of the some detection part acquired.

(3) In some embodiments, in the solid matter detection device according to (1) or (2), the at least one ejection part includes a first ejection part and a second ejection part. And each of the first ejection part and the second ejection part is configured to eject the pressurized fluid toward the same detection target range.

  According to the configuration of (3) above, each of the first ejection unit and the second ejection unit is configured to eject the pressurized fluid toward the same detection target range. Compared with the case where the ejection portion ejects the pressurized fluid, the above-described deposition portion formed in the detection target range can be more reliably destroyed.

(4) In some embodiments, in the solid matter detection device according to (3), the at least one detection unit is between the first ejection unit and the second ejection unit. And arranged side by side along the horizontal direction with respect to the first ejection part and the second ejection part.

  According to the configuration of (4) above, the pressurized fluid ejected from the first ejection unit and the second ejection unit arranged on both sides in the horizontal direction of the detection unit exists in the detection target range of the detection unit. A pressing force that blows off the solid material can be applied more reliably.

(5) In some embodiments, the solid matter detection device according to any one of (1) to (4) described above is configured such that the pressure of the pressurized fluid when ejected from the at least one ejection portion is determined. The pressure sensor further comprises at least one pressure sensor that detects the pressure of the pressurized fluid detected by the pressure sensor when the solid matter is not present in the detection target range. When the detected pressure of the pressurized fluid is greater than a threshold value, the detection target range is configured to detect the presence of the solid matter.

  When there is solid matter in the detection target range, the pressure is detected by the pressure sensor compared to when there is no solid matter in the detection target range because the solid matter causes a pressure loss of the pressurized fluid ejected from the ejection part. The pressure of the pressurized fluid tends to increase. According to the configuration of (5) above, the pressure between the pressure of the pressurized fluid detected by the pressure sensor and the pressure of the pressurized fluid detected by the pressure sensor when there is no solid matter in the detection target range. The presence / absence of solid matter in the detection target range can be detected from the difference. Since the solid detection device only needs to include a pressure sensor that detects the pressure of the pressurized fluid as a means for detecting the presence or absence of solids in the detection target range, the configuration thereof should be simplified. Can do.

(6) In some embodiments, the solid matter detection device according to any one of (1) to (5), wherein the solid matter is contained in a fuel hopper that stores fuel used in a boiler. Including accumulated boiler fuel,
The at least one ejection part is configured to use combustion air sent from a forced air blower as the pressurized fluid.

  According to the configuration of the above (6), since the solid matter includes the boiler fuel accumulated in the fuel hopper that stores the fuel used for the boiler, the detection unit is configured to recognize the boiler fuel accumulated in the fuel hopper. Is detected. Moreover, the general boiler is provided with the forced air ventilator for sending the combustion air to a boiler furnace. For this reason, since at least one ejection part uses the combustion air sent from a forced air blower as a pressurized fluid, it is not necessary to separately provide a compressor for pressurizing the fluid. Can be a thing.

(7) A solid matter management system according to at least one embodiment of the present invention includes:
A solid matter management system for managing the amount of granular, chip-like, pellet-like, or powder-like solids deposited in a reservoir,
The reservoir,
A solids introduction line configured to send the solids to the reservoir,
A control device configured to control the amount of the solid matter introduced from the solid matter introduction line to the reservoir;
A solid matter detection device according to any one of (1) to (6) above,
The at least one detection unit includes an upper detection unit, and a lower detection unit configured to detect the presence or absence of the solid matter at a position lower than the upper detection unit,
The control device
When the upper detection unit does not detect that the solid is present, and the lower detection unit detects that the solid is present, the solid detection is to be introduced from the solid introduction line into the storage unit. Composed of
When the upper detection unit detects that the solid is present, the solid detection unit is configured not to introduce the solid from the solid introduction line to the storage unit.

  According to the configuration of (7) above, the control device does not detect the presence of solid matter in the upper detection unit, and solidifies from the solid matter introduction line to the storage portion when the lower detection unit detects that there is solid matter. Since the material is introduced, it is possible to prevent the shortage of the supply of the solid material to the storage unit. In addition, when the upper detection unit detects that there is a solid matter, the control device does not introduce the solid matter from the solid matter introduction line to the storage portion, and therefore it is possible to prevent excessive supply of solid matter to the storage portion. .

(8) In some embodiments, the solid matter management system according to (7) further includes an abnormality notification device configured to notify an abnormality related to the storage unit, and the at least one detection unit includes And a lower limit detection unit configured to detect the presence or absence of the solid matter at a position lower than the lower detection unit, and the control device includes the upper detection unit, the lower detection unit, or the lower detection unit. When the lower limit detection unit does not detect that the solid is present, the abnormality notification device is activated.

  According to the configuration of (8) above, when the control device does not detect that at least the lower limit detection unit has solid matter, the control device is insufficient to supply the solid matter to the storage unit by operating the abnormality notification device. This can be notified to the worker.

(9) The solid detection method according to at least one embodiment of the present invention includes:
A solid detection method for detecting the presence or absence of granular, chip-like, pellet-like, or powder-like solids deposited in a reservoir using a solid detection device,
The solid detection device is
At least one detection unit configured to detect the presence or absence of the solid matter in a detection target range that is at least a part of a predetermined height position in the storage unit;
Comprising at least one ejection portion configured to eject pressurized fluid toward the detection target range,
The solid detection method is as follows.
A pressurized fluid ejection step for ejecting the pressurized fluid from the at least one ejection section;
After the pressurized fluid ejection step, the solid matter detection step of detecting the presence or absence of the solid matter in the detection target range by the at least one detection unit.

  According to the method of (9) above, the solid detection method includes: a pressurized fluid ejection step for ejecting pressurized fluid from at least one ejection portion; and a pressurized fluid ejection step followed by at least one detection portion. And a solid detection step for detecting the presence or absence of a solid in the detection target range. In this case, even if the deposit part where the solid matter is partially deposited higher than the other part is formed in the detection target range, the jet part is added toward the detection target range in the pressurized fluid jet step. By ejecting the pressurized fluid, the deposited portion can be destroyed. Here, when the accumulation part is formed in the detection target range, the detection unit detects the accumulation part and detects that there is a solid matter in the detection target range. There is a possibility that the position detection accuracy may be lowered. However, the solid matter detection step is performed after the pressurized fluid ejection step, that is, after the ejection portion collapses the accumulation portion. Therefore, according to said method, since a detection part can prevent detecting the deposit part formed in the detection object range, the detection accuracy of the solid substance in the predetermined height position by a detection part can be improved. . Moreover, according to said method, the height position of the upper end of the solid substance deposited in the storage part can be detected accurately by improving the detection accuracy of the solid substance at the predetermined height position by the detection part. .

  According to at least one embodiment of the present invention, there is provided a solid matter detection device capable of accurately detecting the height position of the upper end of a solid matter deposited in a reservoir.

It is sectional drawing which shows schematic structure of a storage system provided with the solid-state detection apparatus concerning one Embodiment. It is sectional drawing of the AA arrow shown in FIG. It is a schematic sectional drawing along the width direction of the storage device in one embodiment, and is a schematic sectional view showing a state before a jetting part jets pressurized fluid. It is a schematic sectional drawing which shows the state seen from the B direction shown in FIG. It is a schematic sectional drawing along the width direction of the storage device in one embodiment, and is a schematic sectional drawing which shows the state after an ejection part ejected pressurized fluid. It is a schematic sectional drawing which shows the state seen from the C direction shown in FIG. It is a circuit diagram of a solid detection device concerning one embodiment. It is a graph for demonstrating the detection part in one Embodiment, Comprising: It is a graph which shows the relationship between the thickness of the solid substance deposited along a side wall, and the pressure of the pressurized fluid at the time of being ejected from an ejection part. . It is a schematic structure figure showing roughly the whole composition of a boiler system provided with the solid detection device concerning one embodiment. It is a flowchart of the management method of the solid substance containing the detection method of the solid substance concerning one Embodiment. It is a schematic structure figure showing roughly the whole composition of the solid substance management system concerning one embodiment.

Hereinafter, some embodiments of the present invention will be described with reference to the accompanying drawings. However, the dimensions, materials, shapes, relative arrangements, and the like of the components described in the embodiments or shown in the drawings are not intended to limit the scope of the present invention, but are merely illustrative examples. Absent.
For example, expressions expressing relative or absolute arrangements such as “in a certain direction”, “along a certain direction”, “parallel”, “orthogonal”, “center”, “concentric” or “coaxial” are strictly In addition to such an arrangement, it also represents a state of relative displacement with a tolerance or an angle or a distance to obtain the same function.
For example, an expression indicating that things such as “identical”, “equal”, and “homogeneous” are in an equal state not only represents an exactly equal state, but also has a tolerance or a difference that can provide the same function. It also represents the existing state.
For example, expressions representing shapes such as quadrangular shapes and cylindrical shapes represent not only geometrically strict shapes such as quadrangular shapes and cylindrical shapes, but also irregularities and chamfers as long as the same effects can be obtained. A shape including a part or the like is also expressed.
On the other hand, the expression “comprising”, “including”, or “having” one constituent element is not an exclusive expression that excludes the presence of the other constituent elements.
In addition, about the same structure, the same code | symbol may be attached | subjected and description may be abbreviate | omitted.

Drawing 1 is a sectional view showing a schematic structure of a storage system provided with a solid detection device concerning one embodiment. 2 is a cross-sectional view taken along line AA shown in FIG.
As shown in FIG. 1, the detection device 1 according to some embodiments is a device for detecting solid matter accumulated in the storage unit 2. Examples of solid matter detected by the detection device 1 include granular, chip-like, pellet-like, or powder-like solid matter.

  In the illustrated embodiment, the detection device 1 is mounted on a storage system 10 as shown in FIG. As shown in FIG. 1, the storage system 10 includes the detection device 1 described above and the storage unit 2 described above. As shown in FIG. 1, the storage unit 2 is provided below the hopper 3 (storage device) configured to store solid matter, and below the hopper 3, and conveys solid matter discharged from the hopper 3. And a screw feeder 4 (conveying device) configured to do this.

As shown in FIG. 1, the hopper 3 (storage device) includes a casing 31 that defines an internal space 30 for storing solids therein, and a supply port 32 for supplying solids to the internal space 30. , And a discharge port 33 for discharging solid matter to the outside of the internal space 30. The solid matter is supplied from the supply port 32 to the internal space 30 and is discharged from the discharge port 33 to the outside of the hopper 3.
In the illustrated embodiment, the hopper 3 is formed in a cylindrical shape having a rectangular cross-sectional shape extending along the vertical direction as shown in FIG. The lower opening end 33 </ b> A serves as the discharge port 33 described above.

  As shown in FIG. 2, the screw feeder 4 is positioned below the hopper 3 with a pair of screw shafts 41 arranged in parallel along the horizontal direction, and extends along the horizontal direction and a pair of screws. A trim 42 (casing) configured to receive the shaft 41.

  Hereinafter, for example, as shown in FIG. 2, one of the pair of screw shafts 41 is positioned on the right side (lower side in the figure) of the solid material transfer direction M (direction from the left side to the right side in the figure) by the screw shaft 41. The screw shaft 41 to be operated is a first screw shaft 41A, and the screw shaft 41 located on the left side (upper side in the drawing) of the transfer direction M is a second screw shaft 41B.

  For example, as shown in FIG. 2, the horizontal direction perpendicular to the axis LA of the screw shaft 41 is defined as the width direction W. Further, the side wall located on the opposite side of the first screw shaft 41A in the width direction W of the hopper 3 (reservoir 2) from the second screw shaft 41B is defined as a first side wall 34, and the hopper 3 (reservoir 2). The side wall located on the opposite side of the first screw shaft 41 </ b> A with respect to the second screw shaft 41 </ b> B in the width direction W of FIG. In the illustrated embodiment, the first side wall 34 and the second side wall 35 extend along the vertical direction.

  As shown in FIG. 2, each of the pair of screw shafts 41 (41A, 41B) extends along the axis LA (LA1, LA2) and is configured to be rotatable, and the shaft 43 Screw blades 44 provided in a spiral shape on the outer periphery. The pair of screw shafts 41 rotates the screw blades 44 to supplement the solids in the gaps between the pitches of the screw blades 44, and causes the solids to move to one side in the direction in which the shaft portion 43 extends (transfer direction M). It is comprised so that it may transfer to the downstream in this.

  In the illustrated embodiment, each of the pair of screw shafts 41 (41A, 41B) has the first support member 11 and the second support at both ends in the extending direction of the shaft portion 43, as shown in FIG. The member 12 is rotatably supported. As shown in FIG. 2, each of the pair of screw shafts 41 (41 </ b> A and 42 </ b> B) includes the drive source device 13 and the shaft portion 43 from the drive source device 13 that generates a rotational force that rotates the screw shaft 41. The rotational force is transmitted through at least one rotational force transmitting member 14 to be connected. Examples of the drive source device 13 include a generator such as a motor. Examples of the rotational force transmission member 14 include a pulley and a gear.

  An input port 45 opened at the top of the trim 42 is connected to the discharge port 33 of the hopper 3, and an internal space 40 defined inside the trim 42 communicates with the internal space 30 of the hopper 3. The internal space 20 of the storage unit 2 described above includes an internal space 30 of the hopper 3 and an internal space 40 of the trim 42.

  The solid matter discharged from the discharge port 33 of the hopper 3 is supplied from the input port 45 of the trim 42 to the internal space 40. The solid matter is captured by the gap between the pitches of the screw blades 44 rotating in the internal space 40 and is transferred from the upstream side to the downstream side in the transfer direction M. The solid matter transferred to the downstream side in the transfer direction M is discharged to the outside of the trim 42 through a solid matter outlet 47 that opens at a position on the downstream side in the transfer direction M of the bottom surface 46 of the trim 42.

  FIG. 3 is a schematic cross-sectional view along the width direction of the storage device according to the embodiment, and is a schematic cross-sectional view showing a state before the ejection portion ejects the pressurized fluid. FIG. 4 is a schematic cross-sectional view showing a state viewed from the direction B shown in FIG. FIG. 5: is a schematic sectional drawing along the width direction of the storage apparatus in one Embodiment, Comprising: It is a schematic sectional drawing which shows the state after an ejection part ejects pressurized fluid. 6 is a schematic cross-sectional view showing a state viewed from the direction C shown in FIG.

  As shown in FIGS. 3 to 6, the detection device 1 according to some embodiments determines the presence or absence of the solid matter S in the detection target range 50 that is at least a part of the predetermined height position LH in the storage unit 2. And at least one detection unit 5 configured to detect, and at least one ejection unit 6 configured to eject the pressurized fluid PF (see FIG. 5) toward the detection target range 50. In the illustrated embodiment, the predetermined height position LH is located above the reference height position LP passing through the axes LA1 and LA2, as shown in FIGS.

  Although details will be described later, in the illustrated embodiment, at least one detection unit 5 is configured to detect the presence or absence of solid matter in the detection target range 50 based on the pressure of the pressurized fluid. In the illustrated embodiment, for example, the at least one detection unit 5 includes a cylindrical ejection nozzle 51 having an opening for ejecting the pressurized fluid PF, and the at least one ejection unit 6 is pressurized. An ejection nozzle 61 having an opening for ejecting the fluid PF is included.

  In the illustrated embodiment, as shown in FIG. 2, the ejection nozzle 51 is inserted into a through-hole 352 formed in the second side wall 35 of at least one detection unit 5. The ejection nozzle 51 (detecting unit 5) is disposed at the same height position as the predetermined height position LH described above, and the axis of the discharge port extends in the horizontal direction.

  In the illustrated embodiment, as shown in FIG. 2, at least one ejection part 6 has an ejection nozzle 61 inserted into a through hole 353 formed in the second side wall 35. The ejection nozzle 61 (ejection section 6) is disposed at the same height position as the predetermined height position LH described above, and the axis of the ejection port is along the horizontal direction and the axis of the ejection port of the ejection nozzle 51. It extends along a parallel direction.

  The ejection nozzle 61 only needs to be configured to eject the pressurized fluid toward the detection target range 50. In another embodiment, the ejection nozzle 61 (ejection section 6) may be arranged at a height position different from the predetermined height position LH or the ejection nozzle 51 (detection section 5), and The axis may extend along a direction intersecting the horizontal direction.

  For example, when only the first screw shaft 41 </ b> A of the pair of screw shafts 41 (41 </ b> A, 41 </ b> B) shown in FIG. 3 rotates to transfer the solid material S, the solid deposited in the internal space 20 of the storage unit 2. The object S has an inclined surface that is inclined downwardly from the inner wall surface 351 side of the second side wall 35 in the width direction W toward the inner wall surface 341 side of the first side wall 34 at the upper end thereof. Here, a portion where the solid S is partially deposited higher than the other portions is defined as a deposition portion S1. The accumulation part S1 is accumulated above the average height AH of the solid matter S accumulated in the internal space 20 of the storage part 2 in the vertical direction. Moreover, let S2 be the upper end portion positioned in the vertical direction with respect to the detection target range 50 of the solid matter S accumulated in the internal space 20 of the storage unit 2.

  As shown in FIGS. 3 and 4, even when the predetermined height position LH (detection target range 50) is located above the average height AH of the solid matter S in the vertical direction, the detection target range 50. In some cases, the accumulation portion S1 is formed, and the upper end portion S2 of the solid matter S is located above the detection target range 50 in the vertical direction. In this case, the detection unit 5 detects that the solid object S is present in the detection target range 50.

  As shown in FIG. 5, the ejection unit 6 is formed in the detection target range 50 by ejecting the pressurized fluid toward the detection target range 50 (from the second side wall 35 side toward the first side wall 34 side). The deposited portion S1 can be destroyed. By destroying the accumulation portion S1 formed in the detection target range 50, the upper end portion S2 of the solid S is positioned below the detection target range 50 in the vertical direction as shown in FIGS. Therefore, the detection unit 5 detects that there is no solid matter S in the detection target range 50 (not detecting that there is a solid matter S).

  As described above, the solid detection device 1 according to some embodiments is configured to detect at least the presence or absence of the solid S in the detection target range 50 as shown in FIG. 5, for example. One detection unit 5 and at least one ejection unit 6 configured to eject the pressurized fluid PF toward the detection target range 50 described above are provided. In this case, even if the deposition part S1 in which the solid matter S is partially deposited higher than the other part is formed in the detection target range 50, the ejection part 6 is pressurized fluid toward the detection target range 50. By ejecting PF, the deposition part S1 formed in the detection target range 50 can be destroyed. Here, when the accumulation unit S1 is formed in the detection target range 50, the detection unit 5 detects the accumulation unit S1 and detects that the solid matter S is present in the detection target range 50. There is a possibility that the detection accuracy of the height position of the upper end of the accumulated solid S may be lowered. However, since the ejection part 6 breaks the accumulation part S1 formed in the detection target range 50, the detection part 5 can be prevented from detecting the accumulation part S1 formed in the detection target range 50. The detection accuracy of the solid substance S at the predetermined height position LH can be improved. Moreover, according to said structure, the detection position of the solid substance S in the predetermined height position LH by the detection part 5 is improved, and thereby the height position of the upper end of the solid substance S accumulated in the storage part 2 is accurately determined. It can be detected well.

  In some embodiments, as shown in FIGS. 1 and 2, the at least one detection unit 5 described above includes a plurality of detection units 5 (5A, 5B), and a plurality of detection units 5 (5A, 5B). Are disposed apart from each other along the horizontal direction. In the illustrated embodiment, as shown in FIGS. 1 and 2, the second detection unit 5B has its ejection nozzle 51 in the transfer direction along the horizontal direction with respect to the ejection nozzle 51 of the first detection unit 5A. It is arranged at a position away from M in the opposite direction. Further, as shown in FIG. 2, each of the ejection nozzle 51 of the first detection unit 5A and the ejection nozzle 51 of the second detection unit 5B is attached to the same side wall (second side wall 35).

  According to said structure, since each of several detection part 5 (5A, 5B) is mutually arrange | positioned along a horizontal direction, each detection object range of several detection part 5 (5A, 5B) The presence or absence of the solid S at 50 can be detected. According to said structure, the detection accuracy of the solid substance S in the predetermined height position LH can be improved with the detection information which each of the some detection part 5 (5A, 5B) acquired.

  In some embodiments, the interval between the ejection nozzle 51 of the first detection unit 5A described above and the ejection nozzle 51 of the second detection unit described above is determined when the average particle size of the solid is D. , D ± 0.2D. When the solid is larger than a predetermined size (for example, the maximum diameter is 50 mm or more), the detection unit 5 detects a gap formed between the solid and the solid and detects that there is no solid. There is a fear. According to said structure, a solid substance is made into precision by setting the space | interval between the ejection nozzle 51 of 5 A of 1st detection parts, and the ejection nozzle 51 of a 2nd detection part in the range of D +/- 0.2D. It can be detected well.

  In some embodiments, as shown in FIGS. 1 and 2, the at least one ejection part 6 described above includes a first ejection part 6 (6A, 6C) and a second ejection part 6 (6B, 6D). ) And. Each of the 1st ejection part 6 (6A, 6C) and the 2nd ejection part 6 (6B, 6D) is comprised so that a pressurized fluid may be ejected toward the same detection object range 50. FIG. In this case, each of the 1st ejection part 6 (6A, 6C) and the 2nd ejection part 6 (6B, 6D) is comprised so that a pressurized fluid may be ejected toward the same detection target range 50. FIG. Therefore, compared to the case where the single ejection part 6 ejects the pressurized fluid, the above-described deposition part S1 formed in the detection target range 50 can be more reliably destroyed.

  In some embodiments, as shown in FIGS. 1 and 2, the at least one detection unit 5 (5 </ b> A, 5 </ b> B) described above includes the first ejection unit 6 (6 </ b> A, 6 </ b> C) and the second ejection unit 6. (6B, 6D) and arranged side by side along the horizontal direction with respect to the first ejection part 6 (6A, 6C) and the second ejection part 6 (6B, 6D). Yes. In the illustrated embodiment, as shown in FIG. 2, the ejection nozzle 51 of the detection unit 5A is arranged between the ejection nozzle 61 of the first ejection unit 6A and the second ejection unit 6B. Also. The ejection nozzle 51 of the detection unit 5B is disposed between the ejection nozzle 61 of the first ejection unit 6C and the ejection nozzle 61 of the second ejection unit 6D. In this case, the additive ejected from the first ejection section 6 (6A, 6C) and the second ejection section 6 (6B, 6D) disposed on both sides in the horizontal direction of the detection section 5 (5A, 5B). A pressing force such that the pressurized fluid blows off the solid S existing in the detection target range 50 of the detection unit 5 can be applied more reliably.

FIG. 7 is a circuit diagram of a solid detection device according to an embodiment.
In some embodiments, the solid substance detection device 1 described above includes at least one pressure sensor that detects the pressure of the pressurized fluid when ejected from at least one ejection section 6, 54, as shown in FIG. 7. A pressure sensor 7 is further provided.

  In the illustrated embodiment, each of the plurality of ejection portions 6 (6A to 6D) is compressed by the ejection nozzle 61 and the air compressor 71 (fluid compressor) described above, as shown in FIG. Compressed air, which is a pressurized fluid, is provided in an ejection pressurized fluid introduction line 62 configured to send pressurized fluid from the air compressor 71 to the ejection nozzle 61, and the ejection pressurized fluid introduction line 62. And a valve 63 configured to be capable of limiting the flow rate of the pressurized fluid discharged from the nozzle 61. The valve 63 includes an on-off valve or a regulating valve.

  In the illustrated embodiment, each of the plurality of detection units 5 (5 </ b> A, 5 </ b> B) includes an ejection unit 54 configured to eject pressurized fluid toward each detection target range 50. As shown in FIG. 7, the ejection unit 54 is configured to detect the addition of the above-described ejection nozzle 51 and compressed air, which is a pressurized fluid, from the air compressor 71 to the ejection nozzle 51. A pressurized fluid introduction line 52 and a valve 53 provided in the detection pressurized fluid introduction line 52 and configured to limit the flow rate of the pressurized fluid discharged from the ejection nozzle 51 are included. The valve 53 includes an on-off valve or a regulating valve.

  In the illustrated embodiment, the above-described pressure sensor 7 is provided between the valve 53 and the ejection nozzle 51 in the pressurized fluid introduction line 52 for detection, and the pressurized fluid when ejected from the ejection portion 54. Detect pressure.

  In the illustrated embodiment, the ejection portion 54 is provided on the upstream side of the valve 53 in the pressurized fluid introduction line 52 for detection and is configured to depressurize (regulate) the pressurized fluid. It further includes a regulator 72 (pressure reducer). In this case, the pressure of the pressurized fluid sent to the ejection nozzle 51 can be made constant.

  In the embodiment shown in FIG. 7, the detection pressurized fluid introduction line 52 and the ejection pressurized fluid introduction line 62 are formed at a position upstream of the air regulator 72 and a position upstream of the valve 63. The branching portion 73 branches off. That is, the shared portion 52A (62A) is located upstream of the branching portion 73. In this case, since the pressurized fluid can be sent to the ejection nozzle 51 and the ejection nozzle 61 from the single air compressor 71 provided on the upstream side of the branch portion 73, the number of necessary air compressors can be reduced. Can be reduced.

  In the embodiment shown in FIG. 7, an air tank 74 configured to store compressed air is provided in the shared portion 52 </ b> A (62 </ b> A). In this case, since compressed air is stored in the air tank 74, it is possible to suppress variations in pressure and flow rate of the pressurized fluid repeatedly discharged from the ejection nozzle 51 and the ejection nozzle 61.

  In the embodiment shown in FIG. 7, the first detection unit 5A and the second detection unit 5B are branched portions 75A formed at positions upstream of the valves 53 in the respective detection pressurized fluid introduction lines 52. Branch at. That is, the upstream side of the branching portion 75A is a shared portion 52B, and the downstream side of the branching portion 75A is dedicated portions 52C and 52D of the individual detection units 5. In addition, what is necessary is just to increase the number of branches in 75 A of branch parts, when increasing the number of the detection parts 5. FIG. Further, as shown in FIG. 3, an upstream pressure sensor 76 configured to detect the pressure of the pressurized fluid in the shared portion 52B may be provided in the shared portion 52B.

  In the embodiment shown in FIG. 7, the ejection parts 6A and 6B corresponding to the first detection part 5A are branched parts formed at positions downstream of the valves 63 in the respective pressurized fluid introduction lines 62 for ejection. Branches at 77A (77). That is, the upstream side of the branching portion 77A is a shared portion 62C, and the downstream side of the branching portion 77A is dedicated portions 62E and 62F of the individual ejection portions 6. The ejection parts 6A and 6B share a single valve 63 provided in the shared part 62C.

  In the embodiment shown in FIG. 7, the ejection parts 6C and 6D corresponding to the second detection part 5B are branched parts formed at positions downstream of the valves 63 in the respective pressurized fluid introduction lines 62 for ejection. Branches at 77B (77). That is, the upstream side of the branching portion 77B is a shared portion 62D, and the downstream side of the branching portion 77B is dedicated portions 62G and 62H of the individual ejection portions 6. The ejection parts 6C and 6D share a single valve 63 provided in the shared part 62D.

  The common portion 62C and the common portion 62D are branched at a branch portion 75B formed at a position upstream of each valve 63. That is, the shared portion 62B is upstream of the branch portion 75B.

  In addition, what is necessary is just to increase the branch number in the branch part 77, when increasing the number of the ejection parts which eject a pressurized fluid toward the same detection object range 50. FIG. Moreover, what is necessary is just to increase the number of branches in the branch part 75B, when increasing the number of the ejection parts 6 with the increase in the detection part 5. FIG.

  FIG. 8 is a graph for explaining a detection unit according to an embodiment, and shows the relationship between the thickness of a solid deposited along the side wall and the pressure of a pressurized fluid when ejected from the ejection unit. It is a graph to show. Here, the “thickness of the deposited portion deposited along the side wall” means the inner wall surface 351 of the solid matter S deposited along the inner wall surface 351 of the second side wall 35 to which the detection unit 5 and the ejection unit 6 are attached. Means the thickness (length in the width direction W). The pressure of the pressurized fluid in FIG. 8 is the pressure P2 detected by the pressure sensor 7 described above when ejected from the ejection portion 54, and is detected by the upstream pressure sensor 76 described above when ejected from the ejection portion 54. It is expressed as a ratio to the measured pressure.

  The estimated curve E1 in FIG. 8 is the solid curve S1 calculated from data obtained by actually measuring the pressure detected by the pressure sensor 7 and the upstream pressure sensor 76 when ejected from the ejection portion 54. The relationship between the thickness from the wall surface 351 and the pressure of the pressurized fluid at the time of being ejected from the ejection part 54 is shown. As shown in FIG. 8, as the thickness of the solid material S from the inner wall surface 351 becomes thinner than a predetermined thickness, the pressure of the pressurized fluid that is gradually ejected from the ejection portion 54 tends to decrease. I found out.

  In some embodiments, as shown in FIG. 8, the above-described at least one detection unit 5 is configured such that the pressure P2 of the pressurized fluid detected by the pressure sensor 7 has no solid matter S in the detection target range 50. In this case, when the pressure P1 of the pressurized fluid detected by the pressure sensor 7 is greater than the threshold T, the detection target range 50 is configured to detect that the solid matter S is present. Note that the pressure P1 and the threshold value T of the pressurized fluid are set in advance before the detection unit 5 performs detection based on experimental results and the like. Further, the pressure and flow rate of the pressurized fluid supplied to the ejection part 54 are kept constant.

  When the solid object S is present in the detection target range 50, the solid substance S causes a pressure loss of the pressurized fluid ejected from the ejection part 54. The pressure P2 of the pressurized fluid when ejected from the ejection part 54 detected by the pressure sensor 7 tends to increase. According to the above configuration, between the pressure P2 of the pressurized fluid detected by the pressure sensor 7 and the pressure P1 of the pressurized fluid detected by the pressure sensor 7 when there is no solid in the detection target range 50. The presence or absence of the solid substance S in the detection target range 50 can be detected from the pressure difference ΔP. The solid detection device 1 only needs to include the pressure sensor 7 that detects the pressure P2 of the pressurized fluid as a means for detecting the presence or absence of the solid in the detection target range 50. Can be a thing.

  In some embodiments, the nozzle diameter of the ejection nozzle 51 of the ejection part 54 is configured to be smaller than the nozzle diameter of the ejection nozzle 61 of the ejection part 6. In this case, since the measurement range of the pressure sensor 7 can be narrowed, the detection accuracy of the pressure difference ΔP described above can be improved.

  In some embodiments described above, the presence or absence of solid matter in the detection target range 50 is detected based on the pressure P2 of the pressurized fluid ejected from the ejection unit 54 included in the detection unit 5. However, based on the pressure of the pressurized fluid ejected from the ejection section 6 described above, the above-described pressure sensor 7 is provided on the downstream side of the valve 63 in the ejection pressurized fluid introduction line 62, and the detection target range. The presence or absence of solid matter at 50 may be detected. In this case, since it is not necessary to provide the ejection part 54 (ejection nozzle 51, the detection pressurized fluid introduction line 52, and the valve 53), the structure of the solid-state detection apparatus 1 can be simplified.

  The at least one detection unit 5 described above is not limited to a pressure difference detection type sensor. In another embodiment, the at least one detection unit 5 described above may be a sensor other than a radio wave sensor such as a microwave level switch or a pressure detection sensor such as an optical sensor.

FIG. 9 is a schematic configuration diagram schematically illustrating an overall configuration of a boiler system including a solid detection device according to an embodiment.
In some embodiments, the solid matter detection device 1 described above is mounted on a boiler system 8 as shown in FIG. 9. The boiler system 8 includes the solid matter detection device 1 described above, a boiler furnace 82 configured to burn boiler fuel, and a heating unit 83 configured to heat a fluid with heat generated in the boiler furnace 82. A solid material supply line 84 for sending solid matter from the solid matter detection device 1 to the boiler furnace 82 of the boiler 81, and a combustion air supply line 85 for sending combustion air to the boiler furnace 82. And a forced air blower 86 that is provided in the combustion air supply line 85 and configured to send the combustion air to the boiler furnace 82.

In the illustrated embodiment, the above-described hopper 3 includes a fuel hopper configured to store boiler fuel that is fuel used for the boiler 81. That is, the solid matter detected by the detection device 1 is made of boiler fuel. In a certain embodiment, the hopper 3 is comprised so that the woody biomass fuel which is a fuel used for a biomass boiler may be stored. That is, the solid detected by the detection device 1 is made of woody biomass fuel.
Examples of boiler fuel include coal and woody biomass fuel. Examples of the woody biomass fuel include wood chips, wood pellets, and PKS (palm kernel shell).

  In the illustrated embodiment, the solid material supply line 84 described above connects the solid material outlet 47 of the screw feeder 4 and the through hole 87 opened in the wall surface 821 of the boiler furnace 82, as shown in FIG. A solids supply pipe 841 to be included. In other embodiments, the above-described solid supply line 84 may include a transport device such as a conveyor.

  In the illustrated embodiment, as shown in FIG. 9, the combustion air supply line 85 includes a branch line 89 branched by a branch portion 88 formed at a position downstream of the forced draft fan 86. It is connected to the ejection nozzle 51 of the (ejection part 54) and the ejection nozzle 61 of the ejection part 6. That is, the forced air blower 86 is used as the air compressor 71 described above, and the upstream portion 85A and the branch line 89 from the branch portion 88 of the combustion air supply line 85 are used as the above-described pressurized fluid introduction line 52 for detection and jetting. It is configured to be used as a pressurized fluid introduction line 62. In this case, the combustion air sent from the forced air blower 86 to the ejection nozzle 51 and the ejection nozzle 61 via the upstream portion 85A and the branch line 89 is configured to be used as the pressurized fluid described above. .

  As described above, in some embodiments, the above-described solid material S includes boiler fuel deposited in a fuel hopper that stores fuel used in the boiler 81. And the at least 1 ejection part 6 and 54 is comprised so that the combustion air sent from the forced air blower 86 may be used as said pressurized fluid. In this case, since the solid material S includes boiler fuel accumulated in a fuel hopper that stores fuel used in the boiler 81, the detection unit 5 detects boiler fuel accumulated in the fuel hopper. To do. Further, the general boiler 81 is provided with a forced air blower 86 for sending combustion air to the boiler furnace 82. For this reason, at least one of the ejection parts 6 and 54 is provided with a compressor (air compressor 71) for pressurizing the fluid by using the combustion air sent from the forced draft fan 86 as the pressurized fluid. Since it is not necessary, the configuration can be simplified.

  FIG. 10 is a flowchart of a solid management method including a solid detection method according to an embodiment. FIG. 11 is a schematic configuration diagram schematically showing an overall configuration of a solid matter management system according to an embodiment.

  A solid matter detection method 100 according to some embodiments is a method of detecting the presence or absence of a solid matter deposited in the reservoir 2 using the solid matter detection device 1 described above. The solid detection device 1 described above includes at least one detection unit 5 described above and at least one ejection unit 6 described above. As shown in FIG. 10, the solid detection method 100 includes at least one of a pressurized fluid ejection step S101 for ejecting pressurized fluid from the above-described at least one ejection section 6 and a pressurized fluid ejection step S101. Solid detection step S102 in which the presence or absence of a solid in the detection target range 50 is detected by the two detection units 5.

  According to the above method, even if the deposit part S1 in which the solid matter S is partially deposited higher than the other part is formed in the detection target range 50, the ejection part 6 is detected in the pressurized fluid ejection step S101. By ejecting the pressurized fluid toward the target range 50, the deposition part S1 can be destroyed. Here, when the accumulation unit S1 is formed in the detection target range 50, the detection unit 5 detects the accumulation unit S1 and detects that the solid matter S is present in the detection target range 50. There is a possibility that the detection accuracy of the height position of the upper end of the accumulated solid S may be lowered. However, the solid matter detection step S102 is performed after the pressurized fluid ejection step S101, that is, after the ejection portion 6 breaks the deposition portion S1. Therefore, according to said method, since the detection part 5 can prevent detecting the deposit part S1 formed in the detection object range 50, the detection precision of the solid substance S in the predetermined height position LH by the detection part 5 is possible. Can be improved. Moreover, according to said method, the detection part 5 improves the detection accuracy of the solid substance S in the predetermined height position LH, and thereby the height position of the upper end of the solid substance S accumulated in the storage part 2 is accurately determined. It can be detected well.

  The solid matter management system 9 according to some embodiments is a system for managing the amount of solid matter deposited in the storage unit 2. As shown in FIG. 11, the solid matter management system 9 includes a solid matter introduction line 91 configured to send a solid matter to the solid matter detection device 1, the storage unit 2, and the storage unit 2 described above. A control device 92 configured to control the amount of solids introduced from the solid material introduction line 91 to the storage unit 2, an abnormality notification device 96 configured to notify an abnormality related to the storage unit 2, and including.

  In the illustrated embodiment, the solid material introduction line 91 includes a solid material storage device 95 configured to store solid material, and the supply port 32 from the solid material storage device 95 to the internal space 20 of the storage unit 2. And a supply pipe 93A (conveyance unit 93) for sending the solid matter, and a valve 94A (conveyance control unit 94) configured to be capable of restricting the conveyance of the solid matter by the supply pipe 93A. The valve 94A includes an on-off valve or a regulating valve. In other embodiments, examples of the transport unit 93 described above include a crane, a screw feeder, and a conveyor. Further, examples of the above-described transport control unit 94 include a drive switch (drive signal) and a stop switch (stop signal) such as a crane.

  In the illustrated embodiment, as shown in FIG. 11, at least one detection unit 5 is configured to detect a detection target range 50C that is at least a part of the upper height position US. A middle detection unit 5D configured to detect the detection target range 50D that is at least a part of the middle height position MS lower than the upper height position US, and a lower height lower than the middle height position MS. A lower detection unit 5E configured to detect a detection target range 50E that is at least a part of the position LS.

  In the embodiment shown in FIG. 11, at least one detection unit 5 is configured to detect a detection target range 50 </ b> F that is at least a part of the lower limit height position LL lower than the lower stage height position LS. It further includes a lower limit detection unit 5F and an upper limit detection unit 5G configured to detect a detection target range 50G that is at least a part of the upper limit height position UL higher than the upper stage height position US. As shown in FIG. 11, the lower limit height position LL is located above the reference height position LP passing through the axes LA1 and LA2.

  In the illustrated embodiment, the control device 92 is an electronic control unit for controlling the amount of solid matter introduced from the solid matter introduction line 91 into the reservoir 2. The control device 92 may be configured as a microcomputer including a central processing unit (CPU), a random access memory (RAM), a read only memory (ROM), and an I / O interface. Moreover, the control apparatus 92 is comprised so that control based on the signal measured by sensors, such as the detection part 5 (5C-5G) mentioned above can be performed with respect to the conveyance control part 94 and the abnormality alerting device 96. FIG. .

  The solid management method 200 according to some embodiments is a method of managing the amount of solid deposited in the storage unit 2 using the solid management system 9 described above. The solid matter management system 9 includes the solid matter detection device 1 described above, the storage unit 2 described above, the solid matter introduction line 91 described above, the control device 92 described above, and the abnormality notification device 96 described above. . As shown in FIG. 10, the solid management method 200 performs processing based on the detection information detected in the pressurized fluid ejection step S101, the solid detection step S102, and the solid detection step S102 described above. Control step S201 (S202 to S209) to be performed.

  As illustrated in FIG. 10, when the upper limit detection unit 5G detects that the solid matter S is present at the upper limit height position UL (detection target range 50G) (“YES” in S202), the control device 92 determines that there is an abnormality. The notification device 96 is activated (S203). In this case, by operating the abnormality notification device 96, it is possible to notify the worker that the solid S is excessively supplied to the storage unit 2.

  As shown in FIG. 10, the upper limit detection unit 5G detects that there is no solid matter S at the upper limit height position UL (detection target range 50G) (it does not detect that there is a solid matter S) (S202). When the upper detection unit 5C detects that the solid matter S is present at the upper height position US (detection target range 50C) (“YES” in S204), the control device 92 performs the transfer control unit. 94 is instructed to stop the introduction of the solid material from the solid material introduction line 91 to the storage unit 2, and the introduction of the solid material is stopped (S205). When the conveyance control unit 94 includes the valve 94A, the valve 94A is closed.

  As shown in FIG. 10, the upper detection unit 5C detects that there is no solid material S at the upper height position US (detection target range 50C) (it does not detect that there is a solid material S) (S204). When the lower detection unit 5E detects that the solid matter S is present at the lower height position LS (detection target range 50E) (“YES” in S206), the control device 92 performs the transfer control unit. 94 is instructed to introduce the solid material from the solid material introduction line 91 to the reservoir 2 and the solid material is introduced (S207). When the conveyance control unit 94 includes the valve 94A, the valve 94A is opened.

  As shown in FIG. 10, the lower detection unit 5E detects that there is no solid matter S at the lower step height position LS (detection target range 50E) (no detection that the solid matter S is present) (S206). If the lower limit detection unit 5F detects that the solid matter S is present at the lower limit height position LL (detection target range 50F) (“YES” in S208), the control device 92 causes the conveyance control unit to 94 is instructed to introduce the solid material from the solid material introduction line 91 to the reservoir 2 and the solid material is introduced (S207). At this time, the amount of solid matter introduced into the reservoir 2 may be increased more than when the lower detector 5E detects that the solid matter S is present at the lower height position LS (detection target range 50E).

  As shown in FIG. 10, when the lower limit detection unit 5F detects that there is no solid matter S at the lower limit height position LL (detection target range 50F) (it does not detect that there is a solid matter S) (in S208). “NO”), the control device 92 activates the abnormality notification device 96 (S209). In this case, by operating the abnormality notification device 96, it is possible to notify the worker that the solid S is insufficiently supplied to the storage unit 2. The solid management method 200 described above is repeatedly performed until the above-described solid management system 9 is terminated (S210).

  In some embodiments, the solid management system 9 described above includes the storage unit 2 described above, the solid material introduction line 91 described above, the control device 92 described above, and the solids described above as illustrated in FIG. An object detection device 1. The at least one detection unit 5 described above includes the upper detection unit 5C described above and the lower detection unit 5E described above. The control device 92 described above does not detect that the upper detection unit 5C has a solid substance, and when the lower detection unit 5E detects that there is a solid substance, the solid substance is transferred from the solid substance introduction line 91 to the storage unit 2. When the upper detection unit 5C detects that there is a solid, the solid is not introduced from the solid introduction line 91 to the storage unit 2.

  According to said structure, when the upper stage detection part 5C does not detect that there exists a solid substance, and the lower stage detection part 5E detects that there exists a solid substance, the control apparatus 92 will be stored in the storage part 2 from the solid substance introduction line 91. Since the solid material is introduced into the storage portion 2, the supply of the solid material to the storage unit 2 can be prevented from being insufficient. In addition, when the upper detection unit 5C detects that there is a solid matter, the control device 92 does not introduce the solid matter from the solid matter introduction line 91 to the storage unit 2, so that excessive supply of solid matter to the storage unit 2 is prevented. Can be prevented.

  In some embodiments, the solid management system 9 described above includes the storage unit 2 described above, the solid material introduction line 91 described above, the control device 92 described above, and the solids described above as illustrated in FIG. The object detection device 1 and the abnormality notification device 96 described above are provided. The at least one detection unit 5 described above includes the above-described upper detection unit 5C, the above-described lower detection unit 5E, and the above-described lower limit detection unit 5F. The control device 92 described above activates the abnormality notification device 96 when at least the lower limit detection unit 5F of the upper detection unit 5C, the lower detection unit 5E, or the lower detection unit 5F does not detect that there is a solid matter. . In this case, at least when the lower limit detection unit 5F does not detect that there is solid matter, the control device 92 operates the abnormality notification device 96, so that the solid matter is insufficiently supplied to the storage unit 2. Can be notified to workers.

  In some embodiments, the solid management system 9 described above includes, as illustrated in FIG. 11, the storage unit 2 described above, the solid material introduction line 91 described above, the control device 92 described above, and the solids described above. The object detection device 1 and the abnormality notification device 96 described above are provided. The at least one detection unit 5 described above includes the upper detection unit 5C described above, the lower detection unit 5E described above, and the upper limit detection unit 5G described above. The control device 92 described above operates the abnormality notification device 96 when at least the upper limit detection unit 5G among the upper limit detection unit 5G, the upper detection unit 5C, or the lower detection unit 5E detects that there is a solid matter. In this case, when the control device 92 detects that at least the upper limit detection unit 5G has solid matter, the control device 92 activates the abnormality notification device 96 so that the solid matter is excessively supplied to the storage unit 2. Can be notified to workers.

  The present invention is not limited to the above-described embodiments, and includes forms obtained by modifying the above-described embodiments and forms obtained by appropriately combining these forms.

  For example, in some embodiments described above, the storage unit 2 includes both the hopper 3 and the screw feeder 4, but may include only one of the hopper 3 and the screw feeder 4. The storage unit 2 may have any configuration as long as it is configured to store solid matter, and is not limited to the hopper 3 or the screw feeder 4.

DESCRIPTION OF SYMBOLS 1 Detection apparatus 2 Storage part 20 Internal space 3 Hopper 30 Internal space 31 Casing 32 Supply port 32A Upper opening edge part 33 Outlet 33A Lower opening edge part 4 Screw feeder 40 Internal space 41 Screw shaft 41A 1st screw shaft 41B 2nd Screw shaft 42 Trim 43 Shaft portion 44 Screw blade 45 Input port 46 Bottom surface 47 Solid matter outlet 5, 5A to 5G detection unit 50, 50C to 50G Detection target range 51 Injection nozzle 52 Pressurized fluid introduction line 54 for injection unit 6 , 6A to 6D Ejection section 61 Ejection nozzle 62 Ejected pressurized fluid introduction line 7 Pressure sensor 71 Air compressor 72 Air regulator 74 Air tank 76 Upstream pressure sensor 8 Boiler system 81 Boiler 82 Boiler furnace 83 Heating section 84 Solid supply Line 85 Combustion air supply line 86 Pushing ventilator 89 Branch line 9 Solid matter management system 91 Solid matter introduction line 92 Control device 93 Transport portion 94 Transport control portion 95 Solid matter storage device 96 Abnormality notification device 10 Storage system 11 First support member 12 Second support member 13 Drive source device 14 Rotational force transmission member 100 Solid matter detection method 200 Solid matter management method E1 Estimated curve LA, LA1, LA2 Axis M Transfer method PF Pressurized fluid S Solid matter S1 Accumulation portion S2 Upper end portion T Threshold W Width direction

Claims (9)

A detection device for detecting solid matter in the form of particles, chips, pellets, or powder deposited in a reservoir,
The storage unit is a hopper configured to store the solid material and a screw feeder provided below the hopper, the screw feeder configured to transfer the solid material in a transfer direction. And including
The detection device is:
The pressurized fluid is ejected toward a detection target range that is attached to a side wall extending along the transfer direction of the hopper and is at least a part of a predetermined height position in the reservoir, and the detection target range At least one jetting part configured to break up the depositing part on which the solid matter is deposited,
At least configured to detect the presence or absence of the solid matter in the detection target range attached to the side wall to which the at least one ejection part is attached and the pressurized fluid is ejected by the at least one ejection part. A solid detection device comprising one detection unit. The solid matter detection device according to claim 1, wherein the at least one detection unit includes a plurality of detection units that are attached to the side wall and are spaced apart in a horizontal direction . The at least one ejection portion includes a first ejection portion attached to said side wall, and a second ejection portion attached to said side wall, a,
Each of the first ejection part and the second ejection part is the same detection target in which one detection part attached to the side wall of the at least one detection part detects the presence or absence of the solid matter. The solid matter detection device according to claim 1, wherein the pressurized fluid is ejected toward a range. The one detection unit is disposed between the first ejection unit and the second ejection unit, and along the horizontal direction with respect to the first ejection unit and the second ejection unit. The solid-state detection device according to claim 3 arranged side by side. The at least one detection unit is attached to the side wall and is configured to eject a pressurized fluid toward the detection target range, and when being ejected from the detection ejection unit The pressure sensor includes at least one pressure sensor that detects the pressure of the pressurized fluid, and the pressure of the pressurized fluid detected by the pressure sensor is detected by the pressure sensor when there is no solid matter in the detection target range. The solid material according to any one of claims 1 to 4, wherein the solid material is detected when the solid material is present in the detection target range when the pressure of the pressurized fluid is greater than a threshold value. Detection device. The solid matter includes boiler fuel deposited in a fuel hopper that stores fuel used for the boiler;
6. The solid matter detection device according to claim 1, wherein the at least one ejection unit is configured to use combustion air sent from a forced air blower as the pressurized fluid. 7. A solid matter management system for managing the amount of granular, chip-like, pellet-like, or powder-like solids deposited in a reservoir,
The solid matter includes boiler fuel,
A hopper configured to store the solid material, and a screw feeder provided below the hopper, the screw feeder configured to transport the solid material along a transport direction, A reservoir,
A solids introduction line configured to send the solids to the reservoir,
A control device configured to control the amount of the solid matter introduced from the solid matter introduction line to the storage unit;
A solid matter detection device according to any one of claims 1 to 6,
The at least one detection unit, and the upper detecting unit attached to the side wall, said attached to the side wall, and the lower detection unit configured to detect the presence of the solid object at a position lower than the upper detection unit And including
The controller is
When the upper detection unit does not detect that the solid substance is present, and the lower detection unit detects that the solid substance is present, the solid substance is introduced from the solid substance introduction line into the storage unit. Composed of
A solid matter management system configured not to introduce the solid matter from the solid matter introduction line to the storage portion when the upper detection portion detects that the solid matter is present. The solid matter management system further includes an abnormality notification device configured to notify an abnormality related to the storage unit,
The at least one detection unit further includes a lower limit detection unit that is attached to the side wall and configured to detect the presence or absence of the solid matter at a position lower than the lower detection unit,
The control device operates the abnormality notification device when at least the lower limit detection unit of the upper detection unit, the lower detection unit, or the lower detection unit does not detect that the solid is present. Item 8. The solid matter management system according to Item 7. A solid detection method for detecting the presence or absence of granular, chip-like, pellet-like, or powder-like solids deposited in a reservoir using a solid detection device,
The storage unit is a hopper configured to store the solid material and a screw feeder provided below the hopper, the screw feeder configured to transfer the solid material in a transfer direction. And including
The solid detection device is
The presence or absence of the solid matter in a detection target range, which is at least one detection unit attached to a side wall extending along the transfer direction of the hopper and is at least a part of a predetermined height position in the storage unit. At least one detector configured to detect;
At least one ejection part attached to the side wall to which the at least one detection part is attached, and comprising at least one ejection part configured to eject pressurized fluid toward the detection target range. ,
The solid detection method is:
A pressurized fluid ejection step for ejecting the pressurized fluid from the at least one ejection section;
A solid detection method comprising: a solid detection step of detecting presence or absence of the solid in the detection target range by the at least one detection unit after the pressurized fluid ejection step.

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