JP2022073545A - Deposit removal device - Google Patents

Abstract

To provide a deposit removal device configured to destroy a sealing body to generate pressure waves, which can suppress stress acting on the sealing body and thus can broaden the selection of materials that can be used as constituent materials of the sealing body.SOLUTION: A deposit removal device 10A that removes deposits adhering to an object using pressure waves, comprises a container 11 having an opening 21, and a lid 12 corresponding to the opening 21. The lid 12 has a plurality of injection ports 25 leading to the inside of the container 11. The deposit removal device is configured to destroy a sealing body 90 to generate pressure waves by increasing the pressure in the container 11 in a state where the sealing body 90 that closes the injection ports 25 is arranged.SELECTED DRAWING: Figure 2

Description

The present invention relates to a deposit removing device that removes deposits adhering to an object by using a pressure wave.

In recent years, it has become important to improve the amount of power generated at a waste incineration facility equipped with a power generation facility. For power generation at a waste incinerator, heat is recovered from high-temperature exhaust gas generated by combustion of waste in an incinerator with a boiler, and steam of a predetermined temperature and pressure is generated and introduced into a turbine generator. It is done by.

The boiler has a radiation chamber and a convection heat transfer chamber. A radiant heat transfer tube is arranged as a radiant heat transfer surface in the radiation chamber, and a superheater is arranged as a convection heat transfer surface in the convection heat transfer chamber. The superheater is configured by arranging a plurality of heat transfer tubes in which a plurality of heat transfer tubes (superheat tubes) are arranged in the horizontal direction in a plurality of stages in the height direction.

The exhaust gas from the incinerator contains dust containing corrosive components and heavy metals. For this reason, as the operation progresses, dust gradually adheres to and accumulates on the radiant heat transfer surface and convection heat transfer surface of the boiler, causing problems such as deterioration of heat recovery performance, blockage of the gas flow path, and corrosion of the heat transfer tube. Invited, it may be difficult to continue normal operation.

Therefore, by attaching a deposit removing device that removes deposits by using a pressure wave to the boiler, it is possible to continuously operate the boiler normally (see, for example, Patent Document 1).

The deposit removing device according to Patent Document 1 includes a pressure-resistant container having an opening and a closed body that closes the opening, and is a gaseous fuel containing an oxidizing agent supplied into the pressure-resistant container via a supply line. It is configured to generate a pressure wave by an explosion.

International Publication No. 2007/08264

In the deposit removing device according to Patent Document 1, the pressure in the pressure-resistant container increases as the fuel is supplied into the pressure-resistant container. At this time, the pressure inside the pressure-resistant container acts on the entire portion of the closed body corresponding to the opening of the pressure-resistant container. Therefore, when a material having a low tensile strength is used as the constituent material of the closed body (sealed body), the sealed body is broken before the filling of the fuel into the pressure-resistant container is completed, and the fuel is used. It may not be able to explode and generate pressure waves. In order to avoid such a situation, the use of a metal material having a high tensile strength is generally limited as a constituent material of the encapsulant, and a range of materials that can be used as a constituent material of the encapsulant can be selected. Becomes narrower.

For example, if the stress acting on the encapsulant is suppressed by increasing the thickness of the encapsulant, a non-metal material having a generally low tensile strength can be used as a constituent material of the encapsulant. In some cases. However, if the thickness of the encapsulant is increased, the means for fixing the encapsulant to the pressure-resistant container becomes large, which in turn leads to an increase in the size of the entire device.

The present invention has been made in view of the above problems, and in a deposit removing device having a configuration in which a sealed body is broken to generate a pressure wave, the stress acting on the sealed body can be suppressed. It is an object of the present invention to provide a deposit removing device capable of expanding the selection of materials that can be used as a constituent material of a sealed body.

The characteristic configuration of the deposit removing device according to the present invention for solving the above problems is
A deposit removing device that uses pressure waves to remove deposits that have adhered to an object.
A container with an opening and
The lid corresponding to the opening and
Equipped with
The lid has a plurality of injection ports leading to the inside of the container.
By increasing the pressure in the container in a state where the sealing body that closes the injection port portion is arranged, the sealing body is destroyed and the pressure wave is generated.

According to the deposit removing device of this configuration, a container having an opening and a lid corresponding to the opening of the container are provided. The lid has a plurality of injection ports leading to the inside of the container. Before use, the plurality of injection ports are closed by a sealing body. In the deposit removing device of this configuration, when a pressure wave is generated, for example, when a gaseous combustible substance or the like is supplied into the container or a compressed gas is supplied, the combustible substance or the like into the container is generated. The pressure inside the container increases with supply. At this time, the sealing body is supported by a portion of the lid around the plurality of injection ports. Therefore, the area where the pressure acts on the sealed body becomes small, and the stress acting on the sealed body can be suppressed. Therefore, as a constituent material of the encapsulant, not only a metal material having a high tensile strength can be used, but also a non-metal material having a generally low tensile strength can be used. The range of choices of materials that can be used as materials can be expanded.

In the deposit removing device according to the present invention
The sealing body is preferably composed of a flammable laminate including a sealing layer and a morphological maintenance layer.

According to the deposit removing device of the present configuration, the sealing body is composed of a flammable laminated body including a sealing layer and a morphological maintenance layer. With such a configuration, even if the pressure inside the container increases due to the supply of the combustible substance or the like into the container, the seal layer can surely prevent the leakage of the flammable substance or the like and the seal layer. Deformation can be suppressed by the morphology maintenance layer and the function as a seal layer can be maintained. Therefore, when the container is filled with a flammable substance or the like, the plurality of injection ports can be reliably closed by the sealing body without leakage. Further, the sealing body is made of a flammable material. Thereby, for example, when the deposit removing device is attached to the boiler, the sealed body destroyed when the pressure wave is generated is burned by the heat in the boiler. Therefore, a protector that protects the boiler heat transfer tube group from the broken sealant becomes unnecessary, and the broken sealant is placed on the recovery line of the deposits removed from the boiler heat transfer tube group by the pressure wave. It can be prevented from being mixed.

In the deposit removing device according to the present invention
The ratio (S ₁ / S ₂ ) of the opening area S ₁ of the injection port portion to the opening area S ₂ of the opening portion is preferably 0.3 to 0.7.

According to the deposit removing device of this configuration, the ratio _{(S 1 / S 2 ) of the} opening area S1 of the plurality of injection ports provided in the lid and the opening area S2 of the openings provided in the container. ) Is 0.3 to 0.7. As a result, the stress acting on the encapsulating body can be reliably suppressed while ensuring the power of the pressure wave required to remove the deposits.

In the deposit removing device according to the present invention
It is preferable to provide a sealing body supply mechanism for supplying the sealing body between the container and the lid.

According to the deposit removing device of the present configuration, the structure is provided with a sealing body supply mechanism for supplying the sealing body between the container and the lid. With such a configuration, after the previous pressure wave is generated, the next pressure wave can be easily generated, and a new sealing body is immediately set by the sealing body supply mechanism, so that the pressure wave is generated. It is possible to generate it continuously.

In the deposit removing device according to the present invention
A switching mechanism for switching between a pinched state and a non-pinched state of the container and the lid with respect to the sealed body is provided.
In the non-pinched state, the sealing body supply mechanism supplies the sealing body so as to close the injection port portion with the unbroken portion instead of the broken portion of the sealing body. Is preferable.

According to the deposit removing device of this configuration, the holding state and the non-pinching state of the container and the lid with respect to the sealed body are switched by the switching mechanism. In the state where the container and the lid are sandwiched between the sealed bodies, the plurality of injection ports of the lid can be reliably closed by the sealed body until the sealed body is destroyed by increasing the pressure inside the container. , The desired pressure wave can be reliably generated. On the other hand, in the non-pinched state of the container and the lid with respect to the sealed body, the sealed body can be moved. Therefore, the sealing body was destroyed by the cooperation between the switching mechanism and the sealing body supply mechanism, that is, the switching operation between the pinched state and the non-pinching state by the switching mechanism and the switching mechanism in the non-pinching state. Destruction of the encapsulation by increasing the pressure inside the container and the next pressure by combining with the operation of supplying the encapsulant so as to close multiple injection ports with the unbroken portion instead of the portion. Since the operation of setting the sealant can be alternately performed in preparation for the generation of the wave, the pressure wave can be continuously generated and the deposit can be continuously removed.

FIG. 1 is a state diagram in which the deposit removing device according to the first embodiment of the present invention is attached to the boiler. FIG. 2 is a phase diagram of a sealed body sandwiched by partially breaking the deposit removing device according to the first embodiment of the present invention. FIG. 3 is a non-pinched state diagram of a sealed body in which the deposit removing device according to the first embodiment of the present invention is partially broken and does not hold the sealed body. FIG. 4 is a partial front view of the lid as seen from the direction of the arrow A in FIG. 5A and 5B show a sealed body, FIG. 5A is a view taken along the arrow B in FIG. 2, and FIG. 5B is a view taken along the arrow C in FIG. FIG. 6 is a phase diagram of a sealed body sandwiched by partially breaking the deposit removing device according to the second embodiment of the present invention. FIG. 7 is a non-pinched state diagram of a sealed body in which the deposit removing device according to the second embodiment of the present invention is partially broken and does not hold the sealed body. FIG. 8 is a diagram showing another example of the switching mechanism. FIG. 9 is a diagram showing another embodiment of the sealing body supply mechanism.

Hereinafter, the present invention will be described with reference to the drawings. In the following embodiment, a deposit removing device installed in a boiler installed side by side in an incinerator of a waste incinerator will be described as an example. However, the present invention is not intended to be limited to the configurations described in the embodiments and drawings described below.

[First Embodiment]
<Summary explanation>
FIG. 1 is a state diagram in which the deposit removing device according to the first embodiment of the present invention is attached to the boiler. As shown in FIG. 1, the deposit removing device 10A is arranged outside the side wall 3 constituting the exhaust gas flow path 2 of the boiler 1. In the exhaust gas flow path 2 of the boiler 1, a plurality of heat transfer tube groups 5 and 6 having a plurality of horizontally arranged heat transfer tubes 4 provided in a plurality of stages in the vertical direction of the boiler 1 are arranged (FIG. 1). Then, only two heat transfer tube groups are shown.). The heat transfer tubes 4 constituting the heat transfer tube groups 5 and 6 are objects to which deposits (dust) are attached. A space having a predetermined size is provided between the heat transfer tube group 5 on the upper side and the heat transfer tube group 6 on the lower side, and the connection duct 7 is projected from the side wall 3 in a communicating state in this space. The deposit removing device 10A is attached to the connecting duct 7 via the nozzle body 8. The deposit removing device 10A includes a container 11, a lid 12, a switching mechanism 13, and a sealing body supply mechanism 15.

FIG. 2 is a phase diagram of a sealed body sandwiched by partially breaking the deposit removing device according to the first embodiment of the present invention. Further, FIG. 3 is a non-pinched state diagram of the sealed body in which the deposit removing device according to the first embodiment of the present invention is partially broken and does not hold the sealed body. In addition, in FIGS. 2 and 3, for the convenience of clarifying the internal structure of the casing 31, which will be described later, the connecting plate 36 on the left side drawn in FIG. 1 is not shown.

<Container>
As shown in FIG. 2, when the direction toward the side wall 3 (see FIG. 1) is "forward", the containers 11 are arranged toward the rear (direction from the left side to the right side in FIG. 2) in this description order. It has a small-diameter cylindrical portion 11a, a truncated cone-shaped portion 11b, and a large-diameter cylindrical portion 11c. These tubular portions 11a, 11b, and 11c are integrally connected in a state where their axes (tube axes) are aligned with each other. Here, the rear end side of the large-diameter cylindrical portion 11c is closed by the end wall portion 20. On the other hand, the front end side of the small-diameter cylindrical portion 11a is opened to form the opening 21. Further, a container-side flange portion 22 is formed so as to project outward so as to include the opening 21 at the front end portion of the small-diameter cylindrical portion 11a. An O-ring 23 is mounted on the front surface of the container-side flange portion 22 in an O-ring groove formed so as to surround the opening 21 in an annular shape. In the following description, the pipe axis direction is the direction in which the axis (tube axis) of the container 11 extends unless otherwise specified.

<Cover>
The lid 12 is provided corresponding to the opening 21 of the container 11, and is arranged on the front side of the container-side flange portion 22 so as to face the container-side flange portion 22. The lid 12 is composed of a rectangular plate-shaped member having a plate surface large enough to cover the entire container-side flange portion 22 including the opening 21.

<Spray port>
FIG. 4 is a partial front view of the lid as seen from the direction of the arrow A in FIG. As shown in FIG. 4, the lid 12 has a plurality of (19 in this example) injection port portions 25 leading to the inside of the container 11. Each of the plurality of injection port portions 25 is formed in the shape of a round hole having a circular cross section penetrating the lid body 12. The plurality of injection port portions 25 are arranged so as to be regularly arranged concentrically with the portion of the lid 12 corresponding to the opening portion 21 of the container 11. That is, in the lid 12, one injection port 25 is arranged in the center of the portion of the lid 12 corresponding to the opening 21 of the container, and 6 is surrounded by the injection port 25 arranged in the center. The circumference of the _first pitch circle diameter D1 with respect to the center of the injection port 25 in which the center of each injection port 25 is arranged at the same angle (every 60 °). Arranged so as to match on CR ₁ , 12 injection port 25s are arranged around the 6 injection ports 25 at equal angles (every 30 °) at the center of each injection port 25. It is arranged so as to coincide with the circumference CR ₂ of the second pitch circular diameter D ₂ (D ₁ <D ₂ ) with respect to the center of the injection port portion 25 arranged at the center thereof.

<Ratio of opening area between multiple injection ports and container openings>
In the present embodiment, the ratio (S ₁ / S ₂ ) of the opening area S ₁ which is the sum of all the opening areas of the plurality of (19) injection port portions 25 and the opening area S ₂ of the opening 21 of the container 11. Is preferably 0.3 to 0.7, more preferably 0.4 to 0.6. This makes it possible to reliably suppress the stress acting on the encapsulating body 90, which will be described later, while ensuring the power of the pressure wave required to remove the deposits. If the ratio (S ₁ / S ₂ ) is less than 0.3, it becomes difficult to secure the power of the pressure wave required to remove the deposits. When the ratio (S ₁ / S ₂ ) exceeds 0.7, the stress acting on the sealing body 90 cannot be sufficiently suppressed, and before the filling of the container 11 with flammable substances or the like is completed. The sealant 90 may break.

<Switching mechanism>
As shown in FIG. 2, the switching mechanism 13 includes a casing 31, a hydraulic cylinder 32, and an urging means 33.

[casing]
The casing 31 includes a main frame member 35 and a connecting plate 36. The main frame member 35 is composed of a rectangular plate-shaped member having an opening (not shown) through which the small-diameter cylindrical portion 11a of the container 11 can penetrate. The main frame member 35 is arranged so as to face the lid 12 with the plate surface facing in the front-rear direction at a predetermined interval in the pipe axis direction with respect to the lid 12. The connecting plates 36 on both the left and right sides toward the front connect the left and right side portions of the lid body 12 and the main frame member 35 to each other.

The sealing body 90 unwound from the winding body 91, which will be described later, passes through the region between the lid 12 and the container-side flange portion 22 in the casing 31 with the plate surface facing in the pipe axis direction, and passes through the tube axis direction. It can be sent vertically downward, which is the direction that intersects (orthogonally) with.

A support member 39 extending in the pipe axis direction is fixed to the lower surface side of the lid 12, the main frame member 35, and the connecting plate 36 so as to be located below the container 11. The container 11 is supported by the support member 39 so as to be movable in the pipe axis direction via a guide roller 40 that is rotatably attached to the support member 39.

[Hydraulic cylinder]
The hydraulic cylinder 32 is a fluid actuator that relatively moves the container-side flange portion 22 so as to approach the lid body 12. In the case of the present embodiment, the extension operation of the hydraulic cylinder 32 causes the container-side flange portion 22 to be relatively moved so as to approach the lid body 12.

A plurality of hydraulic cylinders 32 (4 in this example) are provided. The plurality of hydraulic cylinders 32 are assembled to the main frame member 35 in a fixed state. The plurality of hydraulic cylinders 32 are arranged at equal angles (every 90 °) around the pipe axis of the container 11. Specifically, the XY orthogonal axes are set so that the origin O coincides with the tube axis of the container 11 when viewed from the front side of the main frame member 35, and the axis in the positive direction of the X axis is used as a reference (0). °), When the counterclockwise direction with respect to the origin O is defined as the positive rotation direction, the hydraulic cylinders 32 are arranged at the respective positions of 45 °, 135 °, 225 °, and 315 °. In FIGS. 2 and 3, for convenience of explanation, only the hydraulic cylinders 32 arranged at the respective positions of 45 ° and 315 ° when viewed from the front side of the main frame member 35 are shown.

The hydraulic cylinder 32 is a single-acting single-rod cylinder. A pressing member 41 having a hemispherical shape on the tip side is attached to the tip of the cylinder rod in the hydraulic cylinder 32. The tip of the pressing member 41 is in contact with the rear surface of the container-side flange portion 22. In the hydraulic cylinder 32, the return of the piston (not shown) is performed by the urging force of the compression coil spring (not shown) built in the hydraulic cylinder 32 or the urging force of the urging means 33. It is preferable that the plate (not shown) is replaceably arranged on the rear surface side of the container-side flange portion 22 with which the tip of the pressing member 41 is in contact. By doing so, it is possible to prevent the container-side flange portion 22 from being locally dented by the pressing force acting on the pressing member 41, and it is possible to protect the container-side flange portion 22 from the pressing member 41.

[Guide means]
As described above, the container-side flange portion 22 is relatively moved in the pipe axis direction so as to approach the lid 12 by the extension operation of the hydraulic cylinder 32. Further, the container-side flange portion 22 is relatively moved in the pipe axis direction so as to be separated from the lid 12 by the urging force of the compression coil spring built in the hydraulic cylinder 32 and the urging force of the urging means 33. The guide means 45 is provided so that the relative movement of the container-side flange portion 22 with respect to the lid 12 can be performed accurately and smoothly. The guide means 45 is composed of a guide pin 46 and a guide bush 47.

A plurality of guide pins 46 (two in this example) are provided. The plurality of guide pins 46 are arranged between the lid 12 and the main frame member 35 so that the guide pins 46 penetrate the container side flange portion 22 and the axis of each guide pin 46 is parallel to the pipe axis of the container 11. It is fixed to the lid body 12 and the main frame member 35 by fasteners such as bolts (not shown). The plurality of guide pins 46 are arranged at equal angles (every 180 °) around the pipe axis of the container 11. Specifically, the XY orthogonal axes are set so that the origin O coincides with the tube axis of the container 11 when viewed from the front side of the lid 12, and the axis in the positive direction of the X axis is used as a reference (0 °). ), When the counterclockwise direction with respect to the origin O is defined as the positive rotation direction, the guide pins 46 are arranged at the respective positions of 90 ° and 270 °. In FIGS. 2 and 3, for convenience of distinguishing the guide pin 46 and other parts on the drawing, the guide pin 46 actually located at 90 ° and 270 ° when viewed from the front side of the lid 12 is used. , The figure is shown in a state of being displaced to the respective positions of 67.5 ° and 292.5 ° when viewed from the front surface side of the lid body 12.

A plurality of guide bushes 47 (two in this example) are provided so as to correspond to the plurality of guide pins 46. The plurality of guide bushes 47 are press-fitted into the mounting holes provided in the container-side flange portion 22 and fixed to the container-side flange portion 22. The plurality of guide bushes 47 are arranged at equal angles (every 180 °) around the pipe axis of the container 11. Specifically, the XY orthogonal axes are set so that the origin O coincides with the pipe axis of the container 11 when viewed from the front side of the container side flange portion 22, and the axis in the positive direction of the X axis is used as a reference ( When 0 °) is set and the counterclockwise direction is defined as the positive rotation direction around the origin O, the guide bushes 47 are arranged at the respective positions of 90 ° and 270 °. In FIGS. 2 and 3, for convenience of distinguishing the guide bush 47 and other parts on the drawing, the guide bush 47 actually located at 90 ° and 270 ° when viewed from the front side of the lid 12 is shown. , The figure is shown in a state of being displaced to the respective positions of 67.5 ° and 292.5 ° when viewed from the front surface side of the lid body 12.

In the guide means 45, the guide pin 46 disposed between the lid body 12 and the main frame member 35 is slidably inserted inside the guide bush 47. As a result, the guide bush 47 is slid along the guide pin 46 when the container-side flange portion 22 moves relative to the lid body 12 in the pipe axis direction. In this way, when the container-side flange portion 22 moves relative to the lid body 12, the container-side flange portion 22 is guided by the guiding means 45.

[Means of urging]
The urging means 33 includes a tension rod 51, a compression coil spring 52, a washer 53, a first nut 54, and a second nut 55.

A plurality of (two in this example) tension rods 51 are provided. The plurality of tension rods 51 are planted in a fixed state on the container side flange portion 22 so that the axis of each tension rod 51 is parallel to the pipe axis of the container 11 and protrudes toward the rear surface side of the container side flange portion 22. It is set up. The plurality of tension rods 51 are arranged at equal angles (every 180 °) around the pipe axis of the container 11. Specifically, the XY orthogonal axes are set so that the origin O coincides with the pipe axis of the container 11 when viewed from the front side of the container side flange portion 22, and the axis in the positive direction of the X axis is used as a reference ( When 0 °) is set and the counterclockwise direction is defined as the positive rotation direction around the origin O, the tension rods 51 are arranged at the respective positions of 0 ° and 180 °. In FIGS. 2 and 3, for the convenience of distinguishing the tension rod 51 and other parts on the drawing, the tension rod 51 actually located at 0 ° and 180 ° when viewed from the front side of the lid 12 is shown. , The figure is shown in a state of being shifted to the respective positions of 90 ° and 270 ° when viewed from the front side of the lid 12.

The tension rod 51 projecting to the rear surface side of the container-side flange portion 22 penetrates the main frame member 35 and further projects to the rear surface side of the main frame member 35. A compression coil spring 52 and a washer 53 arranged in the order described toward the rear of the main frame member 35 are fitted on the portion of the tension rod 51 projecting to the rear surface side of the main frame member 35, respectively. A male screw portion 51a is formed in a required region from the rear end to the tip of the tension rod 51 in the portion of the tension rod 51 protruding toward the rear surface side of the main frame member 35. A first nut 54 and a second nut 55 arranged in the order described are screwed to the male screw portion 51a toward the rear.

In the compression coil spring 52, the front end side is in contact with the rear surface of the main frame member 35, and the rear end side is in contact with the washer 53. The first nut 54 is in contact with the washer 53, and the initial deflection amount of the compression coil spring 52 can be adjusted by tightening or loosening the first nut 54. .. Then, after adjusting the initial deflection amount of the compression coil spring 52 by operating the first nut 54, the second nut 55 is tightened in contact with the first nut 54, and then the first nut 54 is rotated in the reverse direction in the loosening direction. As a result, the tightened state of the first nut 54 is maintained by the effect of the double nut.

In the urging means 33, the elastic force of the compression coil spring 52 is transmitted to the tension rod 51 via the washer 53 and the nuts 54 and 55. In this way, the urging means 33 urges the container-side flange portion 22 in the direction (rear) of pulling the container-side flange portion 22 away from the lid body 12.

<Hydraulic drive means>
The hydraulic drive means 60 for driving the switching mechanism 13 by the hydraulic cylinder 32 includes an air hydro booster (hereinafter, simply abbreviated as “booster”) 61 and a directional control valve 62.

[booster]
The booster 61 includes a booster main body 65 and a piston body 66 built in the booster main body 65. The piston body 66 is formed by connecting a large-diameter piston 67 and a small-diameter piston 68 by a connecting rod 69. A first drive chamber 71 is formed between the closed end portion on one side (right side in FIG. 2) of the booster main body 65 and the large-diameter piston 67. A second drive chamber 72 is formed between the large-diameter piston 67, the small-diameter piston 68, and the booster main body 65. A pressure boosting chamber 73 is formed between the closed end portion on the other side (left side in FIG. 2) of the booster main body 65 and the small diameter piston 68. The pressure boosting chamber 73 is filled with hydraulic oil. The pressure boosting chamber 73 and the hydraulic cylinder 32 are connected by a hydraulic pipe line 75.

[Direction control valve]
The directional control valve 62 is, for example, a 5-port 2-position switching electromagnetically operated directional control valve having a first inlet / outlet port, a second inlet / outlet port, a first exhaust port, a second exhaust port, and a compressed air introduction port. The first inlet / outlet port of the directional control valve 62 and the first drive chamber 71 are connected by an air pipe line 76. The second inlet / outlet port of the directional control valve 62 and the second drive chamber 72 are connected by an air pipe line 77. The first exhaust port of the directional control valve 62 is connected to the silencer 81 via the air pipe line 78. The second exhaust port of the directional control valve 62 is connected to the silencer 82 via the air pipe line 79. The compressed air introduction port of the directional control valve 62 is connected to the compressed air supply source 85 via the air pipeline 80.

<Enclosed body supply mechanism>
The sealing body supply mechanism 15 supplies the sealing body 90 having a sufficient size to simultaneously close all of the plurality of (19 in this example) injection port portions 25 provided on the lid body 12. Yes, it is equipped with a winding body 91, a feeding drum 92, and a recovery mechanism 93.

<Sealed body>
The sealing body 90 is made of a plate-shaped body formed into a long strip, and is composed of a flammable laminated body including a sealing layer 90a and a morphological maintenance layer 90b. The seal layer 90a is a layer for providing airtightness so that the flammable substance or the like does not leak even if the pressure in the container 11 increases due to the supply of the flammable substance or the like described later into the container 11. Yes, for example, it consists of a sheet made of a resin material such as polyethylene, polypropylene, polyvinyl chloride, polystyrene, polyethylene terephthalate and the like. The form-maintaining layer 90b is a layer provided at a position adjacent to the seal layer 90a to maintain the form of the seal layer 90a, and is made of, for example, a sheet made of paper, non-woven fabric, or the like. The sealing body 90 is manufactured by, for example, sandwiching a sheet made of paper, a non-woven fabric, or the like and a sheet made of a thermoplastic resin with a pair of pinch rolls while applying heat, and integrally joining them.

The sealing body 90 is a tube between the lid 12 and the container side flange 22 so that the seal layer 90a side faces the container side flange portion 22 and the form maintenance layer 90b side faces the lid 12. It is arranged with the plate surface facing in the axial direction. In this way, even if the pressure inside the container 11 increases due to the supply of the combustible substance or the like described later into the container 11, the seal layer 90a can surely prevent the leakage of the flammable substance or the like and the seal layer. The deformation of the 90a can be suppressed by the morphological maintenance layer 90b, and the function as the seal layer 90a can be maintained. Therefore, when the container 11 is filled with a flammable substance or the like, the plurality of injection port portions 25 can be reliably closed by the sealing body 90. Further, the sealing body 90 is made of a flammable material. As a result, the sealing body 90 that is destroyed when the pressure wave is generated and is blown toward the inside of the boiler 1 is burned by the heat in the boiler 1. Therefore, a protector that protects the heat transfer tube group of the boiler 1 from the sealant 90 that is destroyed and blown into the boiler 1 when a pressure wave is generated becomes unnecessary, and the heat transfer tube group 5 of the boiler is not required. It is possible to prevent the broken sealant 90 from being mixed in the collection line of the deposit removed from 6.

[Roller]
The winding body 91 is formed by winding a strip-shaped sealing body 90 in a roll shape, and is attached to a feeding drum 92 arranged above the container 11.

[Drum]
The feeding drum 92 is rotatably attached to a device frame (not shown) via a support shaft 94 having axes that are orthogonal to each other when projected onto a plane including the tube axis of the container 11. Here, the sealing body 90 unwound from the winding body 91 faces the pipe axis direction of the container 11 and intersects (orthogonally) the pipe axis direction while closing the opening 21 and the injection port portion 25. The mounting position of the feeding drum 92 with respect to the device frame (not shown) is determined so as to proceed along the feed line extending vertically downward.

[The Resolution and Collection Corporation]
The recovery mechanism 93 includes a take-up drum 95, a take-up motor 96, a guide roller 97, and a feed amount detecting means 98.

The take-up drum 95 is arranged below the container 11 so as to have a symmetrical positional relationship with the feeding drum 92 with respect to the pipe axis (axis line) of the container 11. The take-up drum 95 is rotatably attached to a device frame (not shown) via a support shaft 99 having axes that are orthogonal to each other when projected onto a plane including the tube axis (axis) of the container 11. The take-up drum 95 is attached with the tip of a sealing body 90 that is unwound from the feeding drum 92 and passes between the lid 12 and the container-side flange portion 22.

The take-up drum 95 is provided with a take-up motor 96 so that rotational power can be transmitted to the support shaft 99. By the operation of the take-up motor 96, the sealing body 90 unwound from the take-out drum 92 is taken up by the take-up drum 95.

The guide roller 97 is disposed between the feeding drum 92, the lid 12 and the container-side flange portion 22, and at a key point in the middle of the feed line leading to the take-up drum 95, and is fed from the feeding drum 92. The sealing body 90 to be wound by the winding drum 95 is guided.

5A and 5B show a sealed body, FIG. 5A is a view taken along the arrow B in FIG. 2, and FIG. 5B is a view taken along the arrow C in FIG. Examples of the feed amount detecting means 98 include a laser sensor capable of detecting a portion of the sealing body 90 destroyed by the reflected light of the irradiated laser beam (plural round holes 90d: see FIG. 5B). .. A control device (not shown) attached to the sealing body supply mechanism 15 calculates the feeding amount of the sealing body 90 based on the detection result of the feeding amount detecting means 98, and winds up based on the calculated feeding amount. It controls the rotation of the motor 96.

In the sealing body supply mechanism 15, when the switching mechanism 13 is in the non-pinching state of the sealing body described later, the control device controls the rotation of the take-up motor 96 based on the detection result of the feed amount detecting means 98. , Instead of the destroyed portion of the sealing body 90 (round hole 90d: see FIG. 5 (b)), the unbroken portion 90c (see FIG. 5 (a)) is used to replace all of the plurality of injection port portions 25. The sealant 90 can be supplied so as to close it.

As shown in FIG. 2, one end side of the main supply pipeline 100 is connected to the end wall portion 20 of the container 11. A flammable gas supply source 102 is connected to the other end side of the main supply line 100 via the flammable gas supply line 101, and the oxidant gas supply source 104 is connected via the oxidant gas supply line 103. Is connected. Inside the container 11, the combustible gas from the combustible gas supply source 102 is supplied through the combustible gas supply line 101 and the main supply line 100, and oxidation from the oxidant gas supply source 104 is performed. The agent gas is supplied via the oxidizing agent gas supply line 103 and the main supply line 100. Here, examples of the flammable gas (flammable substance) include methane, hydrogen, and the like (methane in this example). On the other hand, examples of the oxidant gas include oxygen, air and the like (oxygen in this example).

A main supply valve 105 is interposed in the middle of the main supply pipeline 100. A pressure gauge 106 for measuring the pressure inside the container 11 is connected to the upstream side of the main supply valve 105 in the main supply pipeline 100. A flammable gas supply valve 107 is interposed in the flammable gas supply pipe 101. An oxidant gas supply valve 108 is interposed in the oxidant gas supply pipe 103.

In the present embodiment, the main supply valve 105 and the combustible gas supply valve 107 are set so that the combustible gas and the oxidizing agent gas have a predetermined mixing ratio under a predetermined pressure based on the measurement signal of the pressure gauge 106. And the valve opening degree of each of the oxidizing agent gas supply valve 108 is controlled. As a result, the flammable gas and the oxidant gas are mixed at a predetermined mixing ratio inside the container 11 under a predetermined pressure.

A glow plug 111 is attached to the end wall portion 20 of the container 11 via a plug protection member 110. In such a configuration, the mixed gas inside the container 11 can be ignited by energizing the glow plug 111. Further, since most of the pressure waves generated by the combustion / explosion of the mixed gas are blocked by the plug protection member 110, the glow plug 111 can be protected and the life of the glow plug 111 can be significantly extended.

<Nozzle body>
The nozzle body 8 has a small-diameter cylindrical portion 8a opened so as to correspond to the opening 21 of the container 11 through an injection port portion 25 provided in the lid body 12, and an inverted head that gradually expands in diameter toward the front. It has a conical cylindrical portion 8b and a large-diameter cylindrical portion 8c having a larger diameter than the small-diameter cylindrical portion 8a. The small-diameter cylindrical portion 8a, the inverted conical cylindrical portion 8b, and the large-diameter cylindrical portion 8c are integrally connected in this order toward the front.

In the nozzle body 8, the large-diameter cylindrical portion 8c and the inverted conical cylindrical portion 8b are inserted into the inside of the connecting duct 7. The middle portion of the nozzle body 8 is fastened with a required bolt to the flange integrally provided at the front end portion of the small diameter cylindrical portion 8a and integrally provided at the rear end portion of the main body portion 115 of the connection duct 7. It is fixed to the connection duct 7 by being worn. The rear end of the nozzle body 8 is fixed to the lid body 12 by fastening a flange integrally provided at the rear end portion of the small-diameter cylindrical portion 8a to the lid body 12 with a required bolt.

<Purge means>
The deposit removing device 10A further includes a purging means for barging flying objects including dust and the like flying toward a plurality of injection port portions 25 which are pressure wave ejection ports. Specifically, the purging means is a blowout pipe 120 that blows out purge gas (for example, compressed air or the like) for blowing off flying objects. The blowout pipe 120 is composed of a cylindrical member extending in an axial direction orthogonal to the pipe axis of the small-diameter cylindrical portion 8a in the nozzle body 8. The outlet pipe 120 has a small diameter cylindrical portion 8a in a state where one end portion of the outlet pipe 120 communicates with the inside of the small diameter cylindrical portion 8a at an intermediate portion between the front end and the rear end of the small diameter cylindrical portion 8a in the nozzle body 8. It is joined to. The other end of the blowout pipe 120 is connected to a compressed air supply source via an air pipe (not shown), a flow rate control valve, or the like.

The operation of the deposit removing device 10A configured as described above will be described mainly with reference to FIGS. 2 and 3.

As shown in FIG. 2, in a state where the sealing body 90 is positioned between the lid body 12 and the container side flange portion 22, the valve position of the directional control valve 62 is changed by a predetermined operation of the directional control valve 62. Switch to one position. In this case, the compressed air from the compressed air supply source 85 is supplied to the first drive chamber 71 via the air pipeline 80, the directional control valve 62, and the air pipeline 76. At the same time, the air in the second drive chamber 72 is exhausted through the air pipe line 77, the direction control valve 62, the air pipe line 79, and the silencer 82.

As a result, the piston body 66 is moved to the left side in FIG. 2, and the hydraulic oil in the pressure boosting chamber 73 is compressed. The hydraulic oil in the pressure increasing chamber 73 is increased in pressure according to the area ratio between the large-diameter piston 67 and the small-diameter piston 68. The increased pressure hydraulic oil (pressure oil) is supplied to the hydraulic cylinder 32 via the hydraulic pipeline 75. As a result, the hydraulic cylinder 32 is extended and operated, and the container-side flange portion 22 is moved forward so as to approach the lid body 12. Along with this, the container 11 is moved forward along the pipe axis. Since the container 11 is supported by the support member 39 via the guide roller 40, the container 11 can be smoothly moved forward.

When the container-side flange portion 22 is moved forward, the sealing body 90 located between the lid body 12 and the container-side flange portion 22 is sandwiched between the container-side flange portion 22 and the lid body 12. (Hereinafter, this state is referred to as a "sealed body holding state"). In this sealed body holding state, the container-side flange portion 22 and the sealing body 90 are kept in an airtight state due to the synergistic effect of the sealing effect of the O-ring 23 and the sealing layer 90a of the sealing body 90. Therefore, as will be described later, the plurality of injection port portions 25 of the lid 12 can be reliably closed by the sealing body 90 until the sealing body 90 is destroyed by increasing the pressure inside the container 11. The desired pressure wave can be reliably generated.

Further, when the container-side flange portion 22 is moved forward, the tension rod 51 is also moved forward together with the container-side flange portion 22. Along with this, the compression coil spring 52 is compressed according to the movement of the tension rod 51, and the elastic rebound force according to the amount of compression is stored in the urging means 33.

As described above, after the sealed body is sandwiched, the combustible gas and the combustible gas and the inside of the container 11 from the combustible gas supply source 102 and the oxidant gas supply source 104 via the supply pipelines 101, 103, 100 The oxidant gas is supplied respectively, and the combustible gas and the oxidant gas are mixed in a predetermined mixing ratio inside the container 11.

Then, by energizing the glow plug 111, the temperature of the mixed gas in the container 11 is raised and ignited. When the mixed gas in the container 11 ignites, combustion / explosion occurs in which the flame rapidly propagates inside the container 11. The gas inside the container 11 tends to expand at once due to the temperature rise caused by combustion. The pressure inside the container 11 which is a closed space rises sharply, and the sealing body 90 which cannot withstand the pressure is broken into pieces. When the sealing body 90 is destroyed, the pressure is rapidly released by ejecting a high-pressure gas at once from the plurality of injection port portions 25 of the lid body 12. A pressure wave is generated as a result of the sudden release of pressure. The generated pressure wave is discharged into the exhaust gas flow path 2 of the boiler 1 via the small-diameter cylindrical portion 8a, the inverted conical cylindrical portion 8b, and the large-diameter cylindrical portion 8c in the nozzle body 8 (see FIG. 1). ). The dust adhering to the heat transfer tube 4 is peeled off and removed by the wind pressure and vibration caused by the pressure wave emitted in this way.

After emitting the pressure wave, the valve position of the directional control valve 62 is switched to the second position as shown in FIG. 3 by a predetermined operation of the directional control valve 62 in preparation for the next pressure wave emission.

As shown in FIG. 3, when the valve position of the directional control valve 62 is in the second position, the compressed air from the compressed air supply source 85 passes through the air pipeline 80, the directional control valve 62, and the air pipeline 77. It is supplied to the second drive chamber 72. At the same time, the air in the first drive chamber 71 is exhausted through the air pipe line 76, the direction control valve 62, the air pipe line 78, and the silencer 81.

As a result, the piston body 66 is moved to the right side in FIG. 3, and the hydraulic oil receiving volume of the pressure boosting chamber 73 increases. Then, due to the urging force of the compression coil spring (not shown) for returning the piston built in the hydraulic cylinder 32 and the urging force of the urging means 33, the hydraulic oil in the hydraulic cylinder 32 passes through the hydraulic pipeline 75. Is sent to the pressure boosting chamber 73, and the hydraulic cylinder 32 contracts. At the same time, the elastic rebound force of the compression coil spring 52 in the urging means 33 pulls the tension rod 51 rearward, and the container-side flange portion 22 is moved rearward so as to be separated from the lid body 12. Along with this, the container 11 is moved backward along the pipe axis. Since the container 11 is supported by the support member 39 via the guide roller 40, the container 11 can be smoothly moved to the rear.

When the container-side flange portion 22 is moved rearward, a gap is created between the container-side flange portion 22 and the sealing body 90, and the sealing body 90 located between the lid body 12 and the container-side flange portion 22 is formed. , The container side flange portion 22 and the lid body 12 are not sandwiched (hereinafter, this state is referred to as a “sealed body non-pinching state”).

After the sealed body is not pinched, the take-up motor 96 is operated to feed the sealed body 90 downward at a predetermined feed pitch. As a result, instead of the destroyed portion of the sealing body 90 (round hole 90d: see FIG. 5 (b)), the unbroken portion 90c (see FIG. 5 (a)) has a plurality of injection ports of the container 11. The sealant 90 can be positioned so as to cover all of the portions 25.

In the deposit removing device 10A, the operation of filling and igniting the mixed gas as the sealed body sandwiched state and the operation of sending the sealed body 90 as the sealed body non-pinched state can be alternately and repeatedly executed. As a result, the pressure wave can be continuously emitted, and the deposits on the heat transfer tube 4 can be continuously removed.

In the deposit removing device 10A, the pressure in the container 11 increases as the flammable gas and the oxidant gas are supplied into the container 11. At this time, the sealing body 90 is stably supported by the portions around the plurality of injection port portions 25 in the lid body 12. Therefore, the area on which the pressure acts on the sealing body 90 becomes small, and the stress acting on the sealing body 90 can be suppressed.

The sealing body 90 is a composite material of a sheet made of paper, a non-woven fabric, or the like and a sheet made of a thermoplastic resin, and has a lower tensile strength than a general metal material. According to the deposit removing device 10A, the stress acting on the sealing body 90 can be suppressed, and the sealing body 90 can be stably supported by the portions around the plurality of injection port portions 25 in the lid body 12. Therefore, it is possible to prevent the sealing body 90 from being locally deformed. Therefore, even the encapsulant 90 made of a non-metal material having a generally low tensile strength can be used, and the range of selection of materials that can be used as the constituent material of the encapsulant 90 can be expanded.

The sealant 90 is made of a flammable material. As a result, the sealing body 90 that is destroyed when the pressure wave is generated and is blown toward the inside of the boiler 1 is burned by the heat in the boiler 1. Therefore, a protector that protects the heat transfer tube group of the boiler 1 from the sealing body 90 that is destroyed when the pressure wave is generated and is blown toward the inside of the boiler 1 becomes unnecessary, and the heat transfer tube group 5 of the boiler is not required. It is possible to prevent the broken sealant 90 from being mixed in the collection line of the deposits removed from the above.

[Second Embodiment]
FIG. 6 is a phase diagram of a sealed body sandwiched by partially breaking the deposit removing device according to the second embodiment of the present invention. Further, FIG. 7 is a non-pinched state diagram of the sealed body in which the deposit removing device according to the second embodiment of the present invention is partially broken and does not hold the sealed body. In the second embodiment, the same or similar to the first embodiment is designated by the same reference numerals and detailed description thereof will be omitted, and the following is specific to the second embodiment. I will mainly explain the part.

<Cover>
As shown in FIG. 6, the deposit removing device 10B of the second embodiment has a lid 12 disposed on the front side of the container-side flange portion 22 (in the description of the deposit removing device 10B, the lid 12 is used. In addition to the "first lid body 12"), a lid body 130 (hereinafter referred to as "second lid body 130") fitted to the front end portion of the small-diameter cylindrical portion 11a in the container 11 is provided. ing. The second lid 130 is a means for press-fitting a stepped hole 125 formed on the inner peripheral side of the front end of the small-diameter cylindrical portion 11a with a tightening allowance, a fastener such as a bolt, welding, or the like. It is fitted in a fixed state by. There is also an embodiment in which the second lid 130 and the container-side flange portion 22 are integrally formed.

<Spray port>
Like the first lid 12, the second lid 130 has a plurality of (19 in this example) injection port portions 25. The plurality of injection port portions 25 provided in the first lid body 12 and the plurality of injection port portions 25 provided in the second lid body 130 are arranged so as to overlap each other when viewed in the pipe axis direction. .. Therefore, the plurality of injection port portions 25 provided in the first lid body 12 and the second lid body 130 respectively communicate with each other in the container 11.

Also in the deposit removing device 10B of the second embodiment, the pressure in the container 11 increases with the supply of the flammable gas and the oxidant gas into the container 11. At this time, the sealing body 90 is stably supported by the portions around the plurality of injection port portions 25 in the lid body 12, the area where the pressure acts on the sealing body 90 becomes small, and the sealing body 90 becomes small. It is the same as the deposit removing device 10A of the first embodiment that the stress acting on the deposit can be suppressed.

In the deposit removing device 10B of the second embodiment, it is sealed by a portion around the plurality of injection port portions 25 in the first lid body 12 and a portion around the plurality of injection port portions 25 in the second lid body 130. The body 90 is pinched. As a result, the sealing body 90 is supported more stably. Therefore, when the container 11 is filled with a flammable gas or the like, the local deformation of the sealed body 90 can be more reliably suppressed.

Although the deposit removing device of the present invention has been described above based on a plurality of embodiments, the present invention is not limited to the configuration described in the above-described embodiment, and the configuration is appropriately configured without departing from the spirit thereof. Can be changed. Specific other embodiments are as follows.

[Another Embodiment]
FIG. 8 is a diagram showing another example of the switching mechanism. Instead of the switching mechanism in each of the above embodiments, the switching mechanism shown in FIGS. 8A to 8D can be adopted. With respect to the same or similar ones as the above-mentioned embodiments, the same reference numerals are given to the drawings and detailed description thereof will be omitted (the same applies to the other embodiments).

<Switching mechanism>
The switching mechanism 213 shown in FIG. 8A includes a casing 214, a toggle link 215, and an air cylinder 216 as an actuator for driving the toggle link 215.

The casing 214 includes a main frame member 35 and an actuator support member 217 arranged so as to connect the main frame member 35 and the lid 12.

The toggle link 215 is arranged between the container-side flange portion 22 and the main frame member 35. The toggle link 215 is composed of a first link 221 and a second link 222. The rear end portion of the first link 221 is connected to the bracket fixed to the main frame member 35 via the first connecting pin 231. The front end portion of the second link 222 is connected to the bracket fixed to the container side flange portion 22 via the second connecting pin 232. The front end of the first link 221 and the rear end of the second link 222 are connected by a third connecting pin 233.

The cylinder rod tip of the air cylinder 216 is connected to the toggle link 215 (first link 221 and second link 222) via a third link 223 and a third connecting pin 233. Here, the insertion hole 223a through which the third connecting pin 233 of the third link 223 is inserted is formed in the shape of a long hole long in the pipe axis direction of the small-diameter cylindrical portion 11a. By providing such an insertion hole 223a, the third connecting pin 233 is allowed to move in the pipe axis direction of the small diameter cylindrical portion 11a when the toggle link 215 expands or contracts due to the expansion / contraction operation of the air cylinder 216. While preventing the radial force from acting on the air cylinder 216, the expansion and contraction force (thrust) of the air cylinder 216 can be reliably transmitted to the toggle link 215 via the third link 223 and the third connecting pin 233. can. A hydraulic cylinder may be used instead of the air cylinder 216.

In the switching mechanism 213, when the air cylinder 216 is extended, the third connecting pin 233 is pushed so as to approach the small diameter cylindrical portion 111a, and the relative distance between the first connecting pin 231 and the second connecting pin 232 is increased accordingly. Spread and toggle link 215 is expanded. As a result, the entire container 11 is moved so that the container-side flange portion 22 approaches the lid body 12, and the sealing body 90 located between the lid body 12 and the container-side flange portion 22 is the lid body 12. It is sandwiched between the container and the container side flange portion 22, and the sealed body is sandwiched.

When the air cylinder 216 contracts in the switching mechanism 213, the third connecting pin 233 is pulled away from the small-diameter cylindrical portion 111a, and the relative distance between the first connecting pin 231 and the second connecting pin 232 is increased accordingly. Shrink and the toggle link 215 is shrunk. As a result, the entire container 11 is moved so that the container side flange portion 22 is separated from the lid body 12, and the sealing body 90 is not sandwiched between the lid body 12 and the container side flange portion 22. It is said that.

The switching mechanism 313 shown in FIG. 8B includes a reaction force receiving member 315, an air cylinder 316, and a hydraulic jack 317.

The reaction force receiving member 315 is composed of a skeleton structure containing the container 11 and is fixed to the lid body 12. The air cylinder 316 is attached to the reaction force receiving member 315. The air cylinder 316 and the container 11 are connected by an arm member 318. The hydraulic jack 317 is interposed between the end wall portion 20 of the container 11 and the reaction force receiving member 315.

In the switching mechanism 313, the container 11 is relatively moved with respect to the lid 12 so that the container-side flange portion 22 is separated from the lid 12 by the extension operation of the air cylinder 316. As a result, the sealed body is not sandwiched. By the extension operation of the hydraulic jack 317, the container 11 is relatively moved with respect to the lid 12 so that the container-side flange portion 22 approaches the lid 12. As a result, the sealed body is in a sandwiched state. In this way, the cooperation between the air cylinder 316 and the hydraulic jack 317 switches between the sealed body sandwiched state and the sealed body non-pinched state. An electric actuator (for example, an electric cylinder or the like) may be used instead of the fluid actuator such as the air cylinder 316 or the hydraulic jack 317.

The switching mechanism 413 shown in FIG. 8C includes a reaction force receiving member 415, an air cylinder 416, and a pressing mechanism 417.

The reaction force receiving member 415 is composed of a reaction force receiving plate portion 418 facing the end wall portion 20 of the container 11 and a support plate portion 419 fixed to the lid 12 to support the reaction force receiving plate portion 418. There is. The air cylinder 416 is attached to the reaction force receiving plate portion 418. The cylinder rod of the air cylinder 416 is connected to the end wall portion 20 of the container 11. The pressing mechanism 417 includes a main body portion 420, a claw portion 421, and a hydraulically actuated portion 422. The main body portion 420 is slidably mounted in a T-groove (not shown) formed in the lid body 12 so as to extend toward a portion of the lid body 12 facing the container-side flange portion 22. The claw portion 421 can switch between a pressed state and a non-pressed state with respect to the side portion of the container side flange portion 22 when the lid body 12 and the container side flange portion 22 are in a state of sandwiching the sealing body 90. It is attached to the main body 420 via the pivot shaft 423. The hydraulically actuated portion 422 exerts a torque around the pivot shaft 423 for the claw portion 421 to be in the pressed state on the claw portion 421.

In the switching mechanism 413, when the lid 12 and the container-side flange portion 22 are in a state of sandwiching the sealing body 90, the pressing mechanism 417 is relatively moved so as to approach the container-side flange portion 22. Then, the claw portion 421 presses the container-side flange portion 22 against the lid body 12 by the operation of the hydraulic pressure actuating portion 422. As a result, the sealed body is in a sandwiched state. On the other hand, after the hydraulically actuated portion 422 of the pressing mechanism 417 is put into an operation stop state and the claw portion 421 is put into a non-pressing state, the pressing mechanism 417 is relatively moved so as to be separated from the container-side flange portion 22. As a result, the sealed body is not sandwiched. In this way, the sealing body is held and sealed by the cooperative operation of the relative movement of the pressing mechanism 417 to the container-side flange portion 22 and the switching between the pressing state and the non-pressing state of the claw portion 421 to the container-side flange portion 22. It is possible to switch between the non-stopped state and the non-pinched state.

The switching mechanism 513 shown in FIG. 8D is configured to include a fastener 500 for fastening the lid body 12 and the container-side flange portion 22. Examples of the fastener 500 include a bolt 501 that penetrates the lid 12 and the container-side flange portion 22 while avoiding the sealing body 90, and a nut 502 that is screwed into the bolt 501. In the switching mechanism 513, the sealed body can be held by the tightening operation of the bolt 501 and the nut 502, and the sealed body cannot be held by the tightening release operation of the bolt 501 and the nut 502.

FIG. 9 is a diagram showing another embodiment of the sealing body supply mechanism. Instead of the sealing body supply mechanism 15 in each of the above embodiments, the sealing body supply mechanism 615 shown in FIGS. 9A and 9B can be adopted.

The sealed body supply mechanism 615 shown in FIGS. 9 (a) and 9 (b) includes a feed mechanism 660 instead of the recovery mechanism 93 in each of the above embodiments. As shown in FIGS. 9A and 9B, the feed mechanism 660 is mounted to support a pair of chuck mechanisms 661 and a pair of chuck mechanisms 661 arranged corresponding to both side portions of the sealing body 90. It is configured to include a base plate 662 and an elevating mechanism 663 that raises and lowers a pair of chuck mechanisms 661 via a mounting base plate 662.

The chuck mechanism 661 includes a set of claws 664 that can move relative to each other in the plate thickness direction of the strip-shaped sealing body 90, and the side portions of the sealing body 90 (round holes in FIGS. 9A and 9B). By moving the pair of claws 664 closer to the outer surplus portions 90e on both sides of 90d, the side portion of the sealing body 90 can be sandwiched between the pair of claws 664 or the side portion of the sealing body 90. On the other hand, the side portion of the sealing body 90 can be released by moving the pair of claws 664 relative to each other so as to separate them from each other.

The elevating mechanism 663 is a combination of an air cylinder 665 and a linear motion guide member 666. The air cylinder 665 is configured so that the cylinder rod 665a moves forward and backward in the vertical direction to expand and contract the entire air cylinder 665 by switching and controlling the supply and discharge of compressed air to the main body.

The tip of the cylinder rod 665a of the air cylinder 665 is joined to the central portion of the mounting base plate 662. The linear motion guide member 666 is composed of a shaft-shaped member that is inserted into both side portions of the main body of the air cylinder 665 so as to be vertically retractable. The tip of the linear motion guide member 666 is joined to a portion of the mounting base plate 662 near the center.

In the feed mechanism 660, when the sealing body is not pinched, both sides of the sealing body 90 are sandwiched by a set of claws 664 in the pair of chuck mechanisms 661, and the air cylinder 665 in the elevating mechanism 663 is contracted. When the pair of chuck mechanisms 661 is lowered via the mounting base plate 662, the sealing body 90 is fed downward while being in contact with the container-side flange portion 22 of the container 11. After that, the side portion of the sealing body 90 is released by relatively moving the pair of chuck mechanisms 661 so as to separate the pair of claws 664, and the mounting base plate 662 is extended by the extension operation of the air cylinder 665 in the elevating mechanism 663. By raising the pair of chuck mechanisms 661 via the cylinder, the downward feed operation of the sealing body 90 described above can be made feasible. In this way, the operation of lowering the pair of chuck mechanisms 661 with the pair of chuck mechanisms 661 sandwiching both side portions of the sealing body 90 and the operation of raising the pair of chuck mechanisms 661 with the sealing body 90 released. By repeating the above steps, the sealed body 90 can be sequentially fed downward at a predetermined feed pitch.

In each of the above embodiments, a flammable gas and an oxidizing agent gas are supplied to the inside of the container 11, and the mixed gas thereof is rapidly burned inside the container 11 to increase the pressure inside the container 11 and seal the gas. The body 90 was destroyed to generate a pressure wave, but the pressure inside the container 11 is not limited to this, and the pressure inside the container 11 is reduced by supplying a compressed gas (for example, compressed air) to the inside of the container 11. It may be raised to break the sealant 90 and generate a pressure wave. In the case of the deposit removing device of such an embodiment, since it does not serve as an ignition source, it can be applied even when flammable dust adheres to the heat transfer tube 4.

The deposit removing device of the present invention can be used, for example, in an application of removing dust adhering to a heat transfer tube of a boiler installed side by side in an incinerator.

10A, 10B Deposit remover 11 Container 12 Lid 13 Switching mechanism 15 Encapsulant supply mechanism 21 Opening 25 Injection port 90 Encapsulant 90a Seal layer 90b Form maintenance layer

Claims (5)

A deposit removing device that uses pressure waves to remove deposits that have adhered to an object.
A container with an opening and
The lid corresponding to the opening and
Equipped with
The lid has a plurality of injection ports leading to the inside of the container.
A deposit removing device configured to break the sealed body and generate the pressure wave by increasing the pressure in the container in a state where the sealed body that closes the injection port portion is arranged. The deposit removing device according to claim 1, wherein the sealed body is composed of a flammable laminated body including a seal layer and a morphological maintenance layer. The deposit removal according to claim 1 or 2, wherein the ratio (S ₁ / S ₂ ) of the opening area S ₁ of the injection port portion to the opening area S ₂ of the opening portion is 0.3 to 0.7. Device. The deposit removing device according to any one of claims 1 to 3, further comprising a sealing body supply mechanism for supplying the sealing body between the container and the lid. A switching mechanism for switching between a pinched state and a non-pinched state of the container and the lid with respect to the sealed body is provided.
In the non-pinched state, the sealing body supply mechanism supplies the sealing body so as to close the injection port portion with the unbroken portion instead of the broken portion of the sealing body. The deposit removing device according to claim 4.

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