JP5448707B2 - Chimney-mounted power generator - Google Patents

Description

The present invention relates to a chimney stationary power generation equipment, to a chimney installed power generating device or the like which can otherwise be carried out efficiently power by introducing the outside air chimney outside.

  In recent years, efforts for global warming and environmental issues have been emphasized, and expectations for energy-saving technologies are increasing year by year. As efforts to address such environmental problems, attention has been focused on effective use of new energy and unused energy, and there is great expectation as an alternative to conventional petroleum energy.

For example, according to the website of the Agency for Natural Resources and Energy, wind power generation using wind power is classified as one of the new energies, and is expected to be used in the future as clean energy that does not emit CO ₂ . In addition, unused energy is defined as a generic term for energy that has not been used so far, such as factory exhaust heat and sewage exhaust heat, and these are expected to be used effectively in the future.

  Various proposals have already been made as technologies for utilizing such new energy and unused energy. For example, a power generation device using waste heat / other heat discharged from a chimney and wind power is also proposed. (For example, see Patent Document 1). According to this proposal, a wind power generator that generates power using waste heat and wind power resulting from it is installed in the middle of the transfer pipe connecting the waste heat generation source and the chimney to effectively utilize unused energy. I am trying.

  According to the one disclosed in Patent Document 1, it is possible to effectively generate necessary power by eliminating the relationship with wind conditions, installation location, time, and seasonal factors, by moving away from a method that depends only on wind, which is a natural phenomenon. It is supposed to be possible. In other words, it is understood that the purpose is to stably generate wind power by effectively using wind power based on the waste heat generated by the waste heat generation source and the waste gas combustion device and the rising air flow caused by the waste heat. Is done.

  From the viewpoint of generating power using waste heat and wind power based on it, it is consistent with the effective use of unused energy and new energy, and is considered a useful proposal as a means of addressing environmental issues. .

JP 2003-90280 A

  However, the one disclosed in Patent Document 1 is difficult to perform efficient wind power generation, and the structure of the pipeline is complicated. That is, in Patent Document 1, the exhaust gas pipe is branched upstream of the generator so that the rising air is concentrated on the tip of the air blade, and the structure is complicated and the cost is high. It has become a thing. Moreover, since it is necessary to bend and branch the pipe in the middle, the contact pressure between the rising air and the inner wall of the pipe increases, resulting in a pressure loss of waste gas. When the pressure loss of the waste gas increases, the air flow rate and flow rate of the rising air decrease, which leads to a decrease in wind power generation efficiency.

  On the other hand, if a structure that does not branch the pipeline is selected, the rising air will pass through the vicinity of the center of the pipeline. In that case, a hub, shaft, generator, etc. disposed near the center of the pipeline Becomes an obstacle to the air flow, resulting in a pressure loss of waste gas, leading to a reduction in the efficiency of wind power generation.

The present invention has been made in view of the above circumstances, and is a chimney-installed power generation apparatus that performs wind power generation using gas exhaust from a chimney, and the pressure loss of the gas exhaust without complicating the structure prevent the increase of (discharge resistance) the example of providing a chimney installed power generating equipment capable of performing a wind power with excellent environmental suitability with high power generation efficiency by utilizing outside air chimney external Let it be an issue.

  In order to solve the above-described problems, a chimney-installed power generation device as an exemplary aspect of the present invention is installed in a gas exhaust path of a chimney that exhausts gas, and generates power by receiving wind caused by gas exhaust. A chimney-installed power generation device that performs a stator in which a plurality of power generation coils are arranged in the vicinity of the periphery of a hollow through-hole having a substantially circular cross section orthogonal to the gas exhaust direction, and a cross section orthogonal to the gas exhaust direction is an outer circumferential circle And a plurality of power generation magnets arranged in the vicinity of the outer circumferential circle, arranged in the hollow through-hole portion of the stator, and in the direction along the gas exhaust direction. A rotor that rotates as a center of rotation, and an outside air guide path that guides outside air from outside the gas exhaust path at a position downstream of the rotor in the gas exhaust direction, and the rotor performs gas exhaust from the outer circumference circle to the inner circumference circle. Wind to cause and having a plurality of blade members which converts the rotational force of the rotor, is configured not substantially interfere with the gas exhaust at the rotation center side of the inner circumference.

  Since power generation is performed using wind power generated by the gas exhausted from the chimney, it is possible to effectively use unused energy that has not been used in the past, which is excellent in environmental suitability and contributes to energy saving. The wind power generation is performed by the action of the power generation coil disposed in the stator and the power generation magnet disposed in the rotor, but the rotor is disposed in the hollow through-hole of the stator so that the rotor is rotated by gas exhaust. Therefore, the inertia moment of the rotor can be reduced compared to the type in which the rotor is disposed on the outer side (outer peripheral side) of the stator. Therefore, the initial power at the start of rotation can be reduced, and power can be generated efficiently even when the wind power is small. Since the moment of inertia of the rotor is small, it is possible to improve the response (followability) of the rotor rotation to the wind force change.

  Since the rotor is configured so as not to substantially hinder gas exhaust at the rotation center side of the inner circumference, gas exhaust near the rotation center of the rotor can be performed smoothly. Therefore, efficient wind power generation can be performed with almost no pressure loss or draft inhibition resistance (air resistance that becomes a factor of inhibiting draft (updraft)) in the vicinity of the rotor rotation center. Since members such as a generator and a hub are not arranged in the vicinity of the rotation center, there is no need to branch the exhaust pipe in order to avoid them, and the structure in the chimney is not complicated.

  Note that the fact that gas exhaust is not substantially prevented on the rotation center side of the inner circumference circle means that no member that inhibits gas exhaust is arranged on the rotation center side of the inner circumference circle, for example, This includes the case where the rotation center side of the inner circumferential circle is hollow and the rotor is ring-shaped.

  The rotor has a plurality of blade members from the outer circumference circle to the inner circumference circle, and the blade members receive the wind force caused by the gas exhaust and rotate the rotor. Since a plurality of blade members efficiently convert wind power into rotor rotational force, highly efficient power generation can be performed.

  The outside air guide path guides outside air from outside the gas exhaust path to the downstream position of the rotor. The gas exhaust path is a concept including the space inside the chimney and its extension line, and is a path through which the gas rising along the extension direction of the chimney (generally the vertical direction) flows. That is, the outside air from outside the gas exhaust path is, for example, air existing outside the chimney.

  That is, the outside air guide path guides the air outside the chimney into the gas exhaust path, and is located downstream of the rotor (inside the chimney, as well as the chimney tip (exhaust port) (upper part). Including the position on the extension line inside the chimney). This outside air guided into the gas exhaust path promotes gas exhaust downstream of the rotor. In particular, when the outside air is guided into the gas exhaust path and has a velocity component in the gas exhaust direction, and the velocity component is higher than the flow velocity of the gas exhaust, A decompression effect is produced, and the effect of accelerating gas exhaust is achieved. Therefore, since the gas exhaust is performed more smoothly, it is possible to effectively prevent the draft inhibition resistance due to the gas exhaust, and wind power generation with higher power generation efficiency becomes possible.

  An outside air guide path is introduced from the outside air introduction port that is substantially opened around the outside of the stator, the outside air outlet port that is substantially opened at the downstream side of the rotor inside the stator, and the outside air introduction port. And an outside air passage that guides the outside air to the outside air outlet while deflecting the outside air.

  Since the outside air is introduced from the outside air inlet port that is opened all around, and is guided by the outside air passage while being deflected by the outside air passage, the outside air is guided from the outside air outlet port that is opened all around to the gas exhaust path. More outside air can be efficiently guided into the gas exhaust path. Thereby, the smoothness improvement of gas exhaust and effective prevention of draft inhibition resistance can be further ensured.

  In addition, since the outside air is guided to the outside air outlet while gradually deflecting outside air through the outside air passage, the outside air can be smoothly guided from the outside of the gas exhaust path to the inside of the gas exhaust path. Etc. can be reduced.

  The opening area of the outside air outlet may be substantially smaller than the opening area of the outside air inlet.

  Since the opening area of the outside air outlet is substantially smaller than the opening area of the outside air inlet, it is possible to easily increase the flow rate of the outside air when the outside air is introduced than when the outside air is introduced. Therefore, the flow rate of outside air guided into the gas exhaust path (that is, the velocity component in the gas exhaust direction) can be easily increased, and the effect of accelerating the gas exhaust can be enhanced.

  The outside air passage may be configured to gradually narrow from the outside air inlet to the outside air outlet.

  Since the outside air passage is configured to gradually narrow, the outside air can be easily accelerated from the outside air introduction port to the outside air outlet port. At this time, it is possible to smoothly guide the outside air to the outside air outlet, and as a result, it is possible to contribute to speeding up the outside air guided into the gas exhaust path.

  The outside air guide path has a substantially funnel-shaped outer hood member in which the cross section perpendicular to the gas exhaust direction at the lower position is formed larger than the cross section at the upper position, and the cross section orthogonal to the gas exhaust direction at the lower position is the cross section at the upper position. And a substantially funnel-shaped inner hood member that is formed larger than the inner hood member and is opposed to the inner side of the outer hood member.

  Since the outside air guide path is constituted by the gap between two substantially funnel-shaped hood members (outer hood member and inner hood member) which are arranged apart from each other, the simple structure guides the outside air into the gas exhaust path. Can be realized. Since there is no need to draw a large number of pipes for guiding outside air, a large amount of outside air can be introduced by two members, so that high-efficiency wind power generation can be realized at low cost.

  The rotor may be configured to be floated and held with respect to the stator by a magnetic bearing.

  Since the rotor is floated and held with respect to the stator by the magnetic bearing, the frictional resistance in rotating the rotor can be remarkably reduced as compared with, for example, a contact type bearing such as a rolling bearing. Therefore, it can contribute to the improvement of power generation efficiency, and also contributes to the improvement of the life of the power generation device and the reduction of maintenance frequency.

  The magnets for bearings that constitute the magnetic bearings may be arranged so as to face the rotor and the stator.

  Since the bearing magnets are arranged so as to face each other on the rotor and the stator, the arrangement position of the bearing magnets can be in the vicinity of the outer circumference of the rotor (that is, in the vicinity of the outer edge of the hollow through-hole portion of the stator). . Since the bearing magnet can be disposed at a position close to the position where the power generation magnet is disposed, the maintenance of the magnet (for example, cooling of the magnet or removal of dust accumulated on the magnet) can be easily performed at a time. .

  A plurality of cooling fins for air-cooling at least one of the power generating coil and the power generating magnet may be disposed near the outer circumference of the rotor.

  Since a plurality of cooling fins are arranged near the outer circumference of the rotor, it is possible to efficiently air-cool the power generation coils and power generation magnets arranged near the cooling fins, improving power generation efficiency and reducing thermal load, This can contribute to the prevention of failure caused by it. Of course, the cooling fin may be configured to air-cool the bearing magnet.

  The blade member may be made of a carbon material.

  The vane member is made of a lightweight and highly rigid carbon material, preventing corrosion due to gas exhaust, ensuring heat resistance to high-temperature gas, and improving power generation efficiency and responsiveness due to weight reduction (especially initial power) Greatly contribute to the reduction of In addition, although it is also preferable to apply a carbon composite material to a blade member, it is more preferable to use an autoclave carbon material especially. Here, the autoclave carbon material is a molding material obtained by laminating carbon fiber cloth and performing high compression molding in an autoclave molding machine, and is particularly a material suitable for forming a curved surface shape by carbon fibers.

  The blade member may have a blade surface that receives wind caused by gas exhaust, and the arrangement angle of the blade surface with respect to the gas exhaust direction may be variable.

  Since the arrangement angle of the blade surface of the blade member with respect to the gas exhaust direction is variable, for example, the following two functions can be exhibited. The first function is a function that enables the optimum arrangement angle to be selectively adjusted according to the gas exhaust speed in the chimney. Thereby, it becomes possible to apply a power generator to various chimneys for general purposes without preparing separate power generators having different arrangement angles for each chimney.

  The second function is to facilitate the maintenance of the stopped state of the rotor after the rotation of the rotor is stopped by brake equipment or the like. It may be necessary to stop the rotation of the rotor during maintenance of the power generation device or the chimney. However, in general, gas exhaust from the chimney is continuously performed regardless of day or night. Therefore, in order to stop the rotation of the rotor, which is a heavy object during high-speed rotation, mechanical and / or electric ( Electromagnetic brake equipment is required.

  On the other hand, since the gas exhaust from the chimney continues after the rotation is stopped by the brake equipment, a moment in the rotational direction is always applied to the rotor. If the arrangement angle of the blade member of the rotor is fixed, the brake equipment must be stopped and maintained in order to maintain the stopped state. For example, it is necessary to lock the rotor and the stator by some kind of engagement member or friction member, or to keep applying the counter electromotive force to maintain the stopped state.

  In addition, since the rotor to be rotated is forcibly maintained by the stop holding force, a load in the rotational direction is always applied, and the load on each part of the equipment is large. In the unlikely event that the engaging member or the friction member for stopping and holding is damaged or the counter electromotive force is stopped, the rotor suddenly starts rotating, which may cause a danger to maintenance workers.

  However, according to the present invention, since the arrangement angle of the blade surface of the blade member with respect to the gas exhaust direction is variable, the angle at which the rotational moment by the gas exhaust is hardly received (that is, the gas exhaust and the blade surface are substantially parallel to each other). It is possible to set the wing surface to the angle of arrangement. Accordingly, the blade surface angle can be set so that the rotor does not “rotate” without having to stop and hold after the rotation is stopped. With a simple and low-cost structure, unnecessary load on each component can be prevented, and the rotor can be kept stopped during gas exhaust. There is little possibility that the rotor suddenly starts rotating, and higher safety can be ensured for maintenance work.

  The rotor is divided into two members, an upstream rotor portion and a downstream rotor portion, on the upstream side and the downstream side in the gas exhaust direction, respectively, and is relatively rotatable along the rotational direction. The blade member is connected to the upstream rotor portion and the downstream rotor portion in the vicinity of the outer circumferential circle of the rotor, and the exhaust gas is discharged from the blade surface by rotating the upstream rotor portion and the downstream rotor portion relative to each other. The arrangement may be such that the arrangement angle with respect to the direction is variable.

  By the relative rotation (so-called torsional rotation) between the upstream rotor and the downstream rotor, the arrangement angles of the plurality of blade members can be changed simultaneously and simply.

  You may further have a monitoring means to monitor the dust accumulation state in the vicinity of the power generation coil.

  Since the monitoring means for monitoring the dust accumulation state in the vicinity of the power generation coil is provided, it is possible to prevent a decrease in power generation efficiency and a failure due to dust accumulation, thereby contributing to an improvement in the reliability of the power generation apparatus. As the monitoring means, for example, an imaging device (such as a CCD camera) that images the vicinity of the power generation coil, or a sensor that detects the amount of dust accumulation in the vicinity of the power generation coil (for example, arranged to be shielded by dust accumulation). The light emitting / receiving sensor) can be conceptualized. Of course, this monitoring means monitors not only the dust accumulation state in the vicinity of the power generation coil but also the dust accumulation state in the vicinity of the power generation magnet and the bearing magnet, and the damage state of these and the blade members. Good.

  You may further have a dust removal means to remove the dust accumulated in the vicinity of the power generation coil.

  Since the accumulated dust can be removed by the dust removing means, even if the power generation efficiency is reduced due to the accumulation of dust, it is not necessary for the worker to bother to work at a high place to remove the dust. The dust removing means can be conceptualized including, for example, a high-pressure air injection means (including an air compressor and a high-pressure air cylinder) disposed in the vicinity of the power generation coil, a blower means, a cleaning liquid injection means, and the like. . Of course, dust accumulated not only in the power generation coil but also in the vicinity of the power generation magnet or the bearing magnet may be removed.

  You may further have a dust removal control means to operate a dust removal means automatically under predetermined conditions.

  If the dust removal control means is provided, it is not always necessary to monitor the dust accumulation state, dust can be removed at an appropriate timing, and it can contribute to prevention of reduction in power generation efficiency. Here, the “predetermined condition” includes various values such as every fixed period (every month, etc.), every fixed operation time (every 500 hours of operation, etc.), every fixed rotation speed of the rotor (every 100,000 rotations, etc.) The condition can be conceptualized. In order to determine whether such a predetermined condition is satisfied, for example, the dust removal control unit may include a timer and a rotation number measurement unit.

  A chimney-mounted power generator further comprising an attachment structure for attachment to the tip of the chimney, wherein the attachment structure is connected to the stator so as to extend downward, and the cross section of the chimney is gradually enlarged. A cylindrical skirt member that covers the front end portion, and a band that is wound around the outer periphery of the skirt member and is substantially tightened at a position lower than the front end portion of the chimney to deform the skirt member and fix the skirt member to the front end portion And a member.

  Since the cross section of the skirt member gradually expands downward, the power generator can be installed in chimneys of various diameters. In addition, the skirt member is deformed by wrapping the band member from the outside of the skirt member, and the power generation device is installed in the chimney, so that a secure and strong installation can be realized and the safety of the power generation device installation at a high place is ensured can do.

  A power generator mounting structure for mounting a wind power generator to the tip of a chimney, which is connected to the stator of the wind power generator so as to extend downward, and gradually expands the cross section of the chimney tip A cylindrical skirt member that covers the outer periphery of the skirt member, and a band member that is wound around the outer periphery of the skirt member and is substantially tightened at a position lower than the tip of the chimney to deform the skirt member and fix the skirt member to the tip. Have.

  Since the cross section of the skirt member gradually expands downward, the power generator can be installed in chimneys of various diameters. In addition, the skirt member is deformed by wrapping the band member from the outside of the skirt member, and the power generation device is installed in the chimney, so that a secure and strong installation can be realized and the safety of the power generation device installation at a high place is ensured can do.

  Further problems or other features of the present invention will become apparent from the preferred embodiments described below with reference to the accompanying drawings.

  According to the present invention, wind power generation that is excellent in environmental suitability and contributes to energy saving can be performed by using unused energy by exhausting gas from a chimney. Increase in pressure loss (exhaust resistance) of gas exhaust can be prevented without complicating the structure, and power generation with high power generation efficiency can be realized by utilizing outside air outside the chimney.

It is an external appearance perspective view of the chimney tip part vicinity which shows the state which has arrange | positioned the wind power generator which concerns on embodiment of this invention in the tip part vicinity of the chimney. It is a sectional side view in the chimney front-end | tip part vicinity of the wind power generator shown in FIG. It is an expanded sectional view which shows the outline of the internal structure of the stator shown in FIG. It is a block diagram which shows the connection state of the CCD camera in the stator shown in FIG. 3, an air purge nozzle, a compressor, a control valve, and a control apparatus. It is a flowchart explaining the dust removal control procedure by the control apparatus shown in FIG. It is an external appearance perspective view of the rotor shown in FIG. It is a circuit block diagram for demonstrating schematic structure of the electric circuit of the wind power generator shown in FIG. It is a figure for demonstrating the connection state of a braid | blade and an outer periphery circle | round | yen, Comprising: The figure which looked at the connection part to the radial direction from the rotating shaft.

  Hereinafter, a wind turbine generator (chimney-installed generator) according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an external perspective view of the vicinity of the chimney T showing a state in which the wind power generation device (chimney installation type power generation device) S is installed in the vicinity of the tip of the chimney T, and FIG. 2 is a side sectional view thereof. .

  For example, in this embodiment, the chimney T is a chimney attached to a waste incineration facility (not shown), and is for discharging the incineration gas G from the waste incineration facility. A blower (not shown) is installed in the chimney T, and the incineration gas G is discharged from the chimney T by the blower.

  The chimney T has a hollow cylindrical shape with a substantially annular cross section, and the hollow interior forms a gas exhaust path. The incineration gas G from the waste incineration facility rises while passing through the gas exhaust path in the chimney T, and is discharged from the tip (exhaust port) of the chimney T to the upper atmosphere. In the present embodiment, the wind power generator S is installed at the tip of the chimney T, but of course, it may be installed in the middle of the chimney T.

  The required motor capacity of the blower is designed based on the required air volume for gas discharge, and the required air volume is calculated based on various factors such as the incineration capacity of the waste incineration facility and the chimney diameter. For example, even if the design value of the required motor capacity calculated based on these factors is 80 kW, if the nearest higher-level model that can be selected is 90 kW, a capacity of 10 kW is left behind. In the past, 10 kW as the surplus capacity could not be used effectively and had to be discarded as energy. The wind power generator S according to the present invention uses the energy corresponding to the extra 10 kW capacity as a power source for wind power generation.

  The wind power generator S is roughly configured to include a hood 2, a stator 4, a rotor 6, and a mounting structure 8. The hood 2 is a constituent member for configuring the outside air guide path 10 for guiding the outside air A from outside the chimney T (that is, outside the gas exhaust path) into the gas exhaust path, and has a substantially funnel-shaped outer side. The hood member 2a and a substantially funnel-shaped inner hood member 2b are generally configured.

  As shown in FIG. 2, the outer hood member 2 a and the inner hood member 2 b are spaced from each other and face each other. The inner hood member 2b is disposed inside the outer hood member 2a. Both hood members 2a and 2b have a substantially funnel shape in which the cross section perpendicular to the gas exhaust direction is a circular cross section and the diameter is gradually reduced toward the top.

  The gap between the outer hood member 2a and the inner hood member 2b constitutes the outside air guide path 10, which is the end of the outside air guide path 10 having the largest diameter and substantially outside the stator 4. The end portion positioned is the outside air introduction port 10a, and the end portion of the end having the smallest diameter and substantially located downstream of the rotor 6 inside the stator 4 is the outside air outlet port 10b.

  The outside air introduction port 10a is formed over the entire circumference of the hood 2, is located outside the gas exhaust path, and introduces outside air A outside the chimney T. The outside air outlet 10b is formed over the entire circumference of the hood 2, is located in the gas exhaust path and downstream of the rotor 6, and guides the outside air A into the gas exhaust path. The passage from the outside air inlet 10a to the outside air outlet 10b is the outside air passage 10c, and the outside air guide path 10 is configured by including the outside air inlet 10a, the outside air outlet 10b, and the outside air passage 10c.

  The gap between the two hood members 2a and 2b is wider outside the chimney T and becomes narrower toward the inside of the chimney T. As a result, the outside air passage 10c also gradually increases in area from the outside of the chimney T to the inside of the chimney T. It is narrowing. As a result, the opening area of the outside air outlet 10b is smaller than the opening area of the outside air inlet 10a.

  The outside air passage 10c is formed so as to lead outside air A introduced along a direction substantially orthogonal to the gas exhaust direction along a direction substantially parallel to the gas exhaust direction, and the outside air introduction port 10a conducts the outside air. The outside air A is guided while being gradually deflected toward the outlet 10b. Accordingly, the outside air A is easily introduced outside the chimney T, and a large amount of the outside air A is introduced from the outside air introduction port 10a. Then, the air is smoothly guided to the outside air outlet 10b without being influenced by passage resistance and pressure loss, and is derived from the outside air outlet 10b with a velocity component in the gas exhaust direction.

  As the passage area of the outside air passage 10c gradually decreases, the outside air A is accelerated, and when it is led out from the outside air outlet 10b, it is led out as an outside air flow having a high flow velocity in the gas exhaust direction. When the flow velocity in the gas exhaust direction of the external airflow is higher than the gas exhaust velocity, the external airflow effectively accelerates the gas exhaust, and as a result contributes to the improvement of power generation efficiency.

  The stator 4 is a member having a substantially circular cross section perpendicular to the gas exhaust direction, and has a hollow through portion 4a and has an annular shape as a whole. A number of power generating coils 12 are arranged in the vicinity of the periphery of the hollow through portion 4a, and the power generating coils 12 are connected to each other and connected to a storage battery or a power transmission line (not shown). FIG. 3 is an enlarged cross-sectional view showing an outline of the internal structure of the stator 4.

  As shown in FIG. 3, the stator 4 has a substantially U-shaped cross section, and the concave portion 4 b faces the inside of the chimney T. A power generating coil 12 and a bearing magnet 14 are disposed in the recess 4b. The power generation coil 12 is disposed so as to face a power generation magnet 16 of the rotor 6 described later. The power generation coil 12 and the power generation magnet 16 are separated from each other by a predetermined interval so as to generate power efficiently by electromagnetic induction.

  The bearing magnet 14 is a magnet for constituting a magnetic bearing for floatingly holding the rotor 6 from the stator 4. It arrange | positions in the up-and-down position so that it may respectively oppose to the stator 4 side and the rotor 6 side, and the opposing magnets repel each other with the same polarity, and the rotor 6 is levitated by the repulsive force.

  A CCD camera (monitoring means) 20 and an air purge nozzle (dust removing means) 22 are also arranged in the recess 4 b of the stator 4. The CCD camera 20 is for monitoring the dust accumulation state in the vicinity of the power generation coil 12. The CCD camera 20 includes the vicinity of the power generation coil 12 in the photographing range, and displays the photographed image on, for example, a monitor screen installed in a management room (not shown). Since the manager in the management room can visually check the dust accumulation state in the vicinity of the power generation coil 12 by visually checking the monitor screen, it is necessary to work at a high place in order to confirm the dust accumulation state. Absent. Of course, a plurality of CCD cameras 20 may be arranged for monitoring not only the vicinity of the power generating coil 12 but also for monitoring the vicinity of the magnets 14 and 16 and for monitoring the vicinity of the blade (blade member) 24 of the rotor 6.

  As the CCD camera 20, it is desirable to use a rain-proof high-sensitivity high-quality camera. For example, “a rain-proof VF lens-equipped 380,000 pixel high-quality small camera“ YVF-4090WP (manufactured by Sony Corporation) ” ] "Can be applied. According to this, since the number of pixels: 380,000 pixels, minimum illuminance: 0.5 Lux, S / N ratio: 46 dB or more, high sensitivity and high image quality, and further excellent dustproof performance and waterproof performance, this wind power generator S Can be preferably applied.

  The air purge nozzle 22 is for removing dust accumulated in the vicinity of the power generation coil 12 and is capable of jetting high-pressure air from the tip of the nozzle. With the high-pressure air, the accumulated dust is scattered and removed, and the power generation efficiency lowered due to the dust accumulation is recovered. Similarly to the CCD camera 20, the air purge nozzle 22 may be separately provided with a nozzle for removing dust accumulated not only near the power generating coil 12 but also near the magnets 14 and 16. In addition, the air purge nozzle 22 is appropriately disposed in the recess 4b of the stator 4 so as to be able to efficiently remove the accumulated dust in the plurality of power generating coils 12 arranged over the entire circumference of the stator 4. A plurality are arranged at intervals. The plurality of air purge nozzles 22 and bevicon (dust removing means) 22a installed in the storage case 21 are connected to each other by pipes 23 so that compressed air from the bebicon 22a is jetted from each air purge nozzle 22. . The bebicon 22a is an abbreviation for a so-called baby compressor (small air compressor).

  The dust removal operation by the air purge nozzle 22 may be controlled by a control device (dust removal control means) 26 as shown in FIG. FIG. 4 is a block diagram showing a connection state of the CCD camera 20, the air purge nozzle 22, the bebicon 22a, the control valve 22b, and the control device 26.

  A control valve 22b is provided in the middle of the pipe 23 connecting the air purge nozzle 22 and the bebicon 22a, and this control valve 22b is normally closed. The control valve 22b is connected to the control device 26, and is configured to be able to automatically open the valve based on a control signal from the control device 26.

  Further, the control device 26 has an image processing means inside, and determines whether or not there is a predetermined amount or more of dust accumulation in the vicinity of the power generation coil 12 based on the image signal from the CCD camera 20. It is configured to be able to.

  An image signal in the vicinity of the power generation coil 12 from the CCD camera 20 is input to the control device 26. When the control device 26 determines that a predetermined amount or more of dust has accumulated in the vicinity of the power generation coil 12, the control device 26 opens the control valve 22 b in the middle of the pipeline connecting the bebicon 22 a and the air purge nozzle 22. Open for a certain time. Then, high-pressure air is ejected from the air purge nozzle 22 for a certain period of time, and accumulated dust is removed.

  The dust removal control procedure by the control device 26 as described above is shown in the flowchart of FIG. Further, the control device 26 does not necessarily have to determine the dust accumulation amount based on the photographed image from the CCD camera 20. For example, the control device 26 measures the elapsed time from the previous dust removal by a timer (time measuring means) 26a. The control valve 22b may be automatically controlled to be opened every month to perform the dust removal operation.

  The timer 26a does not measure the elapsed time since the previous dust removal, but measures the operating time of the wind turbine generator S since the previous dust removal. For example, the timer 26a automatically controls the control valve 22b every 500 hours of operation. The dust removal operation may be performed by controlling the opening. In addition, the rotor rotational speed measuring means 26b measures the rotor rotational speed from the previous dust removal, and automatically controls the opening of the control valve 22b at every rotor rotational speed to perform the dust removing operation. Also good.

  Further, if the control device 26 has storage means (not shown), and calendar information and a schedule setting program are stored in the storage means, the schedule of the dust removal operation is programmed in advance based on the calendar. The dust removal operation (high-pressure air injection from the air purge nozzle 22) can be automatically performed according to the program setting.

  For example, from spring to summer (from March to August), the dust removal operation is automatically executed twice a week, Monday and Thursday, and from autumn to winter (from September to February) only on Wednesdays every week. It can be set so that the dust removal operation is automatically executed once. Further, if the schedule can be set in units of time, for example, during the daytime (from 6:00 am to 6:00 pm), the dust removal operation is automatically performed every three hours, and at night (from 6:00 pm (Until 6 am) can be set to automatically execute the dust removal operation every 6 hours.

  Of course, if this wind power generator S has, for example, a manual dust removal button (not shown) disposed in the management room, the manual operation is performed by pressing the manual button by a manager or the like. It is also possible. This is convenient because a manual dust removal operation can be executed at an appropriate timing after a photographed image (monitoring image) taken by the CCD camera 20 is visually confirmed and the dust accumulation state is confirmed. Of course, the automatic dust removal control using the control device 26 and the manual dust removal operation may be used in combination, but the control device 26 can be abolished by arranging a manual button, which contributes to further cost reduction. it can.

  The rotor 6 is a hollow annular member whose cross section perpendicular to the gas exhaust direction has an outer circumferential circle 6a and an inner circumferential circle 6b and has a substantially concentric circle. FIG. 6 shows an external perspective view of the rotor 6. A large number of power generation magnets 16 are arranged in the vicinity of the outer circumference circle 6a. The rotation generates an electromagnetic induction effect between the power generation magnet 16 and the power generation coil 12 to generate power.

  The rotor 6 is disposed in the hollow through portion 4a of the stator 4 and floats from the stator 4 due to the repulsive action between the bearing magnet 14 disposed in the vicinity of the outer circumferential circle 6a and the bearing magnet 14 disposed on the stator 4 side. doing. Wind force caused by gas exhaust is received by the blade 24 in the floating state, and the influence of the frictional resistance by the bearing about the rotation axis X that is substantially the same as the central axis of the chimney T (corresponding to the gas exhaust direction). It rotates smoothly with almost no impact.

  The rotor 6 has a large number of cooling fins 28 in the vicinity of the outer circumference circle 6a. The cooling fins are for air-cooling the power generating coil 12, the power generating magnet 16, the bearing magnet 14 and the like. As shown in FIG. 3, the power generating coil 12 and the magnets 14, 16 are entrained by surrounding air. Cooling air C flowing in the vicinity is generated. In addition to cooling each part, the airflow of the cooling air can also provide an effect of dust removal or dust accumulation suppression.

  The blade 24 is a member that receives gas exhaust on the blade surface (blade surface) 24 a and converts the wind force into the rotational force of the rotor 6. A large number of blades 24 are arranged radially from the outer circumference circle 6a to the inner circumference circle 6b, but neither the blade 24 nor other members are arranged on the inner side (rotation center side) of the inner circumference circle 6b. In the vicinity of the rotation axis X, the gas exhaust is not substantially hindered. Therefore, there is almost no generation of draft inhibition resistance or pressure loss with respect to the gas exhaust, and the gas exhaust is performed smoothly, contributing to the improvement of power generation efficiency. Furthermore, since the gas exhaust is further accelerated by the outside air A led to the downstream position of the rotor 6, the power generation efficiency is further improved.

  FIG. 7 is a circuit configuration diagram for explaining a schematic configuration of the electric circuit 30 of the wind turbine generator S. The electric circuit 30 also functions as a brake facility in the wind power generator S. Since the rotation of the rotor 6 is stopped based on the function of the brake equipment, the function will be described.

  The power generation unit S1 of the wind power generator S includes a rotor 6 and a stator 4. The power generation coil 12 on the stator 4 side is connected to an electric circuit 30 shown in FIG. In the electric circuit 30, the first circuit 30 a, the second circuit 30 b, the third circuit 30 c, and the fourth circuit 30 d are connected in parallel, and the fourth circuit 30 d is connected to the power transmission unit 31. The first circuit 30a includes a first amplifier TR1, the second circuit 30b includes a resistor R and a second amplifier TR2, the third circuit 30c includes a capacitor Q, and the fourth circuit 30d includes a thyristor Y.

  In a normal power generation state, the power generated in the power generation unit S1 is sent from the thyristor Y to the power transmission unit 31 via the power generation path. Then, electric power is consumed or stored by an electrical load unit (not shown) connected to the power transmission unit 31.

  On the other hand, in order to stop the rotation of the rotor 6, the electric circuit 30 is made to function as a brake facility, and there are the following two braking methods. One is a method (so-called dynamic braking) in which electric power from the power generation unit S1 is sent to the resistor R via the first brake path, and electric power is consumed by the resistor R to apply the brake. The other is a method in which forward power from the power transmission unit 31 is sent to the power generation unit S1 via the second brake path, and power generation is stopped by the forward power.

  After the rotation of the rotor 6 is stopped by any one of the braking methods described above, the blade surface angle of the blade 24 is adjusted to maintain the stopped state. FIG. 8 is a view for explaining a connection state between the blade 24 and the outer circumference circle 6 a in the rotor 6, and is a view in which the connection portion is seen in the radial direction from the rotation axis X. The outer circumference circle 6a of the rotor 6 is divided into an upper rotor (upstream rotor portion) 6c and a lower rotor (downstream rotor portion) 6d on the upstream side and downstream side in the gas exhaust direction, and the upper rotor 6c. And the lower rotor 6d are rotatable relative to each other in the rotation direction about the rotation axis X.

  Racks 7 are respectively formed on the lower surface side of the upper rotor 6c and the upper surface side of the lower rotor 6d, and a pinion gear 9 attached to a rotating shaft of a stepping motor (not shown) is engaged with the rack 7. ing. The stepping motor is attached to the stator 4 side or the chimney T side, and is configured to be able to advance and retreat along the rotation axis direction (that is, the direction perpendicular to the paper surface in FIG. 8).

  Therefore, in the power generation state in which the rotor 6 is rotating, the pinion gear 9 is in a retracted state (in the rear side of the paper in FIG. 8) and is separated from the rack 7 and does not hinder the rotation of the rotor 6. When the rotation of the rotor 6 is stopped by the brake equipment, the pinion gear 9 enters an advanced state (toward the front side in FIG. 8) and meshes with the rack 7. When the stepping motor is rotationally driven in the meshing state, the upper rotor 6c and the lower rotor 6d are rotated relative to each other.

  A large number of upper pins 25a project inwardly so as to correspond to the respective blades 24 along the inner periphery of the upper rotor 6c, and a plurality of upper pins 25a correspond to the respective blades 24 along the inner periphery of the lower rotor 6d. The lower pin 25b is disposed so as to protrude inward.

  Each blade 24 is pin-connected to the upper rotor 6c and the lower rotor 6d by an upper pin 25a and a lower pin 25b, respectively. When the upper rotor 6c is rotated in the rotational direction with respect to the lower rotor 6d by the rotational drive of the stepping motor, the blade surface 24a angle with respect to the gas exhaust direction of all the blades 24 can be changed simultaneously. Yes. Thereby, the arrangement angle of the blade surface 24a can be easily adjusted to an appropriate angle according to factors such as the incineration capacity of the waste incineration facility and the diameter of the chimney T. In addition, by setting the angle so that the blade surface 24a is substantially vertical (parallel to the gas exhaust direction), the rotor 6 can be easily operated after the rotation of the rotor 6 is stopped by the brake equipment even in the state of gas exhaust. The rotating state can also be maintained.

  The attachment structure 8 is a structure for attaching the wind power generator S to the tip of the chimney T, and is generally configured by including a skirt member 8a and a band member 8b. The attachment structure 8 may be included in the wind power generator S or may be configured separately from the wind power generator S.

  The mounting structure 8 can easily and reliably mount and fix the wind power generator S at a high position, ie, the tip of the chimney T, and shortens the time required for the high position work to ensure the safety of workers. This reduces the risk of the wind power generator S falling and improves the reliability of the device.

  The skirt member 8 a is a cylindrical (or substantially funnel-shaped) member that extends downward, and is connected to the stator 4 so as to extend downward. The connection between the skirt member 8a and the stator 4 is performed by, for example, welding or a firm fixation with bolts and nuts. The skirt member 8a is installed so as to cover the tip of the chimney T, and the maximum inner diameter at the lowest position is formed larger than the outer diameter at the tip of the chimney T. That is, the maximum inner diameter of the skirt member 8a needs to be larger than the outer shape of the tip portion of the various chimneys to be applied, although it has the largest tip portion outer diameter. In other words, if the chimney has a tip outer diameter smaller than the maximum inner diameter of the skirt member 8a, the mounting structure can be applied to chimneys having various outer shapes. The skirt member 8a is preferably made of a ductile metal material such as copper, brass, zinc, galvanized steel plate (tin), for example.

  The band member 8b is a member for securely and firmly fixing the wind power generator S to the tip of the chimney T by covering the tip of the chimney T with the skirt member 8a and then winding the skirt member 8a around the outer periphery of the skirt member 8a. The band member 8b needs to be wound and tightened at a position below the tip of the chimney T. Then, the skirt member 8a is deformed by tightening the band member 8b, and the skirt member 8a is attached to the tip of the chimney T with sufficient safety. The tightening operation of the band member 8b does not need to be performed while the worker goes around the chimney T, and can be performed while staying at one place near the fastener 8c portion of the band member 8b. Therefore, the working time can be shortened compared with the case where the wind power generator S is fixed around the chimney T by bolts, nuts, rivets, welding or the like. Further, since the movement of workers is small, work safety can be improved.

  As mentioned above, although preferable embodiment of this invention was described, this invention is not limited to these, A various deformation | transformation and change are possible within the range of the summary.

A: Outside air C: Cooling air G: Gas (incineration gas)
Q: Capacitor R: Resistor S: Wind power generator (chimney installation type power generator)
S1: Power generation unit T: Chimney TR1: First amplifier TR2: Second amplifier X: Rotating shaft Y: Thyristor 2: Hood 2a: Outer hood member 2b: Inner hood member 4: Stator 4a: Hollow through portion 4b: Recess 6: Rotor 6a: outer circumference circle 6b: inner circumference circle 6c: upper rotor (upstream rotor section)
6d: Lower rotor (downstream rotor part)
7: Rack 8: Mounting structure 8a: Skirt member 8b: Band member 8c: Fastener 9: Pinion gear 10: Outside air guideway
10a: outside air inlet 10b: outside air outlet 10c: outside air passage 12: power generating coil 14: bearing magnet 16: power generating magnet 20: CCD camera (monitoring means)
22: Air purge nozzle (dust removing means)
21: Storage case 22a: Bebicon (small air compressor, dust removing means)
22b: Control valve 23: Pipe 24: Blade (blade member)
24a: Blade surface (wing surface)
24b: upper end position 24c: lower end position 25a: upper pin 25b: lower pin 26: control device (dust removal control means)
26a: Timer (time measuring means)
26b: Rotor rotation speed measuring means 28: Cooling fin 30: Electric circuit 30a: First circuit 30b: Second circuit 30c: Third circuit 30d: Fourth circuit 31: Power transmission unit (electric load unit)

Claims (3)

A chimney-installed power generator that is installed in a gas exhaust path of a chimney that exhausts gas, and that generates power by receiving wind caused by the gas exhaust,
A stator in which a plurality of power generating coils are arranged in the vicinity of the periphery of the hollow through-hole having a substantially circular cross section perpendicular to the gas exhaust direction;
A cross-section perpendicular to the gas exhaust direction is a hollow annular shape having an outer circumferential circle and an inner circumferential circle and presenting a substantially concentric circle, and a plurality of power generation magnets are arranged in the vicinity of the outer circumferential circle, and the stator has a hollow through-hole. A rotor that is disposed and rotates around a direction along the gas exhaust direction, and an outside air guide path that guides outside air from outside the gas exhaust path to a downstream position of the rotor in the gas exhaust direction. And
The rotor has a plurality of blade members that convert the wind force resulting from the gas exhaust into the rotational force of the rotor from the outer circumference circle to the inner circumference circle, and at the upstream side and the downstream side in the gas exhaust direction. Each of the upstream rotor portion and the downstream rotor portion is divided into two members and can be rotated relative to each other along the rotation direction.
The blade member is
The gas is connected to the upstream rotor portion and the downstream rotor portion in the vicinity of the outer peripheral circle of the rotor, and by rotating the upstream rotor portion and the downstream rotor portion relative to each other. A chimney-installed power generator in which an arrangement angle of a blade surface that receives wind caused by exhaust with respect to the gas exhaust direction is variable .   2. The chimney-mounted power generator according to claim 1, wherein a plurality of cooling fins for air-cooling at least one of the power generating coil and the power generating magnet is disposed in the vicinity of the outer circumference of the rotor. A chimney-installed power generator further comprising an attachment structure for attaching to the tip of the chimney,
The mounting structure is
A cylindrical skirt member that is connected to the stator so as to extend downward and covers the tip of the chimney by gradually expanding its cross section;
A band member wound around the outer periphery of the skirt member and substantially deformed at a position lower than the tip of the chimney to deform the skirt member and fix the skirt member to the tip. The chimney installation type power generator according to claim 1 or 2 constituted.

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