Steam power generator

Abstract

To provide a steam power generation device that generates electricity without using a steam turbine. [Solution] The movable plate 21 has a cylindrical portion 20 that forms a path for movement of the movable plate 21, a first flow path 31 that guides steam generated in the boiler 72 to one end of the cylindrical portion 20, a second flow path 32 that guides steam generated in the boiler 72 to the other end of the cylindrical portion 20, a helical shaft 22 formed on one surface of the movable plate 21, and a nut 40 that engages with the portion of the helical shaft 22 protruding from the cylindrical portion 20 and converts the linear motion of the helical shaft 22 into rotational motion, the rotational motion of the nut 40 is converted into rotational motion in a constant direction of the generator drive gear 51 via the interlocking gear 41 and the rotation direction switching mechanism 42.

Description

Technical Field

[0001] The present invention relates to a steam power generation apparatus that generates power using water vapor.

Background Art

[0002] As described in Patent Document 1 below, a conventional steam power generation apparatus generates steam in a boiler, rotates a steam turbine with the steam, and generates electric power by the rotational force of the steam turbine.

Prior Art Literature

Patent Literature

[0003]

Patent Document 1

Summary of the Invention

Problem to be Solved by the Invention

[0004] However, since steam turbines rotate at high speed, complete adjustment of rotational balance is indispensable, and high technology is required for the manufacture thereof. An object of the present invention is to provide a steam power generation apparatus that generates power by effectively utilizing the energy of water vapor without using a steam turbine.

Means for Solving the Problem

[0005] The steam power generation apparatus of the present invention includes a boiler that generates steam from water, a movable plate that moves within a cylindrical section when pushed by the steam generated by the boiler, a first flow path that guides the steam generated by the boiler to one end of the cylindrical section in order to move the movable plate in one direction within the cylindrical section, a second flow path that guides the steam generated by the boiler to the other end of the cylindrical section in order to move the movable plate in the opposite direction within the cylindrical section, a flow path switching door that switches the inflow destination of the steam generated by the boiler to the first flow path or the second flow path, an outlet provided on the side of the cylindrical section for discharging steam from within the cylindrical section, an opening and closing door for opening and closing the outlet, and a condenser that converts the steam discharged from the outlet into water and supplies it to the boiler. Furthermore, a spiral core rod, having spiral grooves or projections formed on the circumferential surface of a rod-shaped body, is installed on the surface of the movable plate facing the other end of the cylindrical portion, and the tip of this spiral core rod protrudes from the surface of the other end of the cylindrical portion. When the movable plate moves within the cylindrical portion in one direction or the opposite direction, the movement of the helical shaft protruding from the cylindrical portion is converted into rotational motion in a certain direction by the motion conversion mechanism, and this rotational motion rotates the drive shaft of the generator. Furthermore, the motion conversion mechanism comprises a nut that engages via a ball with a portion of the helical shaft protruding from the cylindrical portion and converts the reciprocating linear motion of the helical shaft into rotational motion in the left and right directions; an interlocking gear that rotates in conjunction with the rotation of the nut; and a rotation direction switching mechanism that transmits the rotation of the interlocking gear to the generator drive gear so that the generator drive gear, fixed to the rotation shaft of the generator, rotates in a constant direction as the interlocking gear rotates.

[0006] Furthermore, in the steam power generation apparatus of the present invention, when the flow path switching door selects the first flow path as the destination for the steam inflow, the opening / closing door of the discharge port is opened until the moving plate, which moves within the cylindrical portion toward the other end, reaches the discharge port at least. When the flow path switching door selects the second flow path as the destination for the steam inflow, the opening / closing door of the discharge port is opened until the moving plate, which moves within the cylindrical portion toward the one end, reaches the discharge port at least.

[0007] Furthermore, in the steam power generation apparatus of the present invention, when the flow path switching door selects the first flow path as the destination for the steam inflow, the opening / closing door of the discharge port may be opened until the movable plate, which moves within the cylindrical portion toward the other end, passes the position of the discharge port, and when the flow path switching door selects the second flow path as the destination for the steam inflow, the opening / closing door of the discharge port may be opened until the movable plate, which moves within the cylindrical portion toward one end, passes the position of the discharge port. [Effects of the Invention]

[0009] The steam power generation device of the present invention can generate electricity without using a steam turbine. [Brief explanation of the drawing]

[0010] [Figure 1] A diagram showing the overall structure of the steam power generation device of the present invention. [Figure 2] (a) A diagram showing the relationship between the spiral shaft and the nut in Figure 1. (b) A diagram showing the configuration of the rotation direction switching mechanism in Figure 1. [Figure 3] A diagram (part 1) showing the change in state when steam flows through the first channel. [Figure 4] A diagram (part 2) showing the change in state when steam flows through the first channel. [Figure 5] A diagram (part 3) showing the change in state when steam flows through the first channel. [Figure 6] A diagram (part 1) showing the change in state when steam flows through the second channel. [Figure 7] A diagram (part 2) showing the change in state when steam flows through the second channel. [Figure 8] A diagram (part 3) showing the change in state when steam flows through the second channel. [Modes for carrying out the invention]

[0011] Embodiments of the present invention will be described below. As shown in Figure 1, the steam power generation apparatus of the present invention comprises a condenser 71 that cools the steam moving inside the pipe 30 and returns it to water, a boiler 72 that heats and vaporizes the returned water, a flow path switching door 33 that switches the flow of steam generated in the boiler 72 to either the first flow path 31 or the second flow path 32, a cylindrical section 20 into which the steam that has passed through the first flow path 31 or the second flow path 32 flows, and a movable plate 21 housed in the cylindrical section 20 that moves inside the cylindrical section 20 due to the steam flowing in from the first flow path 31 and the second flow path 32.

[0012] Steam that has passed through the first flow path 31 flows into the cylindrical section 20 from one end face side, and steam that has passed through the second flow path 32 flows into the cylindrical section 20 from the other end face side.

[0013] The cylindrical section 20 houses a movable plate 21 that moves within the cylindrical section 20 due to steam flowing in from the first channel 31 and the second channel 32. From the center of one face of the movable plate 21 (the face facing the other end face of the cylindrical portion 20), a rod-shaped body (spiral core rod) 22 with spiral grooves or protrusions formed on its circumferential surface extends, and the tip of this spiral core rod 22 protrudes from the other end face of the cylindrical portion 20.

[0014] The side of the cylindrical section 20 is provided with an outlet 34 for discharging steam from inside the cylindrical section 20, and an opening / closing door 35 for opening and closing the outlet 34. The steam discharged from the outlet 34 is sent to the condenser 71 where it is converted into water, and then sent to the boiler 72 where it is converted back into steam.

[0015] Furthermore, as shown in Figure 2(a), the portion of the helical shaft 22 protruding from the end face of the cylindrical portion 20 engages with the nut 40 via a ball. This helical shaft 22, the ball, and the nut 40 constitute a ball screw structure that converts the reciprocating linear motion of the helical shaft 22 into left / right rotational motion of the nut 40. The ball is repeatedly supplied between the helical shaft 22 and the nut 40 through a circulation path, reducing friction between the helical shaft 22 and the nut 40.

[0016] Further, an interlocking gear 41 that rotates in conjunction with the rotation of the nut 40 is coupled to the nut 40. The interlocking gear 41 is engaged with a generator driving gear 51 fixed to the rotating shaft of the generator 50 via a rotation direction switching mechanism 42.

[0017] As shown in FIG. 2(b), the rotation direction switching mechanism 42 includes a gear 421 that reverses the rotation of the interlocking gear 41 and transmits the reversed rotation to the generator driving gear 51, and a pair of gears (gear 422 and gear 423) that transmit rotation in the same direction as the rotation of the interlocking gear 41 to the generator driving gear 51. When the spiral core rod 22 moves in one direction along with the movement of the moving plate 21 within the cylindrical portion 20, control is performed such that one gear of the rotation direction switching mechanism 42 (for example, the gear 421) is interposed between the interlocking gear 41 and the generator driving gear 51. Further, when the spiral core rod 22 moves in the opposite direction, control is performed such that the other gear of the rotation direction switching mechanism 42 (the pair of gears 422 and 423) is interposed between the interlocking gear 41 and the generator driving gear 51. Through such control, the generator driving gear 51 rotates in a constant direction regardless of the moving direction of the spiral core rod 22.

[0018] The steam power generator of the present invention includes a control unit 60 that controls the switching of the rotation direction switching mechanism 42 and the opening and closing of the flow path switching door 33 and the opening / closing door 35.

[0019] FIG. 3, FIG. 4, and FIG. 5 show state transitions of the steam power generator when inflow of steam into the first flow path 31 is selected by the flow path switching door 33. Note that prior to the state of FIG. 3, steam has flowed in from the second flow path 32, and the moving plate 21 is positioned closer to one end face side of the cylindrical portion 20.

[0020] When the control unit 60 identifies, based on the position of the spiral core rod protruding from the end face of the cylindrical portion 20, that the moving plate 21 is present at a predetermined right-side position within the cylindrical portion 20, the control unit 60 controls the flow path switching door 33 to allow steam to flow into the first flow path 31 as shown in FIG. 3, and simultaneously controls the opening / closing door 35 of the discharge port 34 to open. Therefore, the amount of steam flowing in from the first channel 31 increases on the right side of the moving plate 21, while the amount of steam on the left side of the moving plate 21 decreases as it is discharged from the outlet 34. As a result, the moving plate 21 moves to the left within the cylindrical section 20.

[0021] As shown in Figure 4, when the moving plate 21, which has moved to the left, reaches the position of the outlet 34, the steam on the right side of the moving plate 21 is discharged from the outlet 34 along with the steam on the left side of the moving plate 21. However, if the amount of steam flowing in from the first flow path 31 is large, the movement of the moving plate 21 to the left within the cylindrical portion 20 will continue.

[0022] When the control unit 60 determines, based on the position of the spiral core rod 22 protruding from the end face of the cylindrical portion 20, that the movable plate 21 has moved to the left of the position of the discharge port 34, it closes the opening / closing door 35 of the discharge port 34, as shown in Figure 5.

[0023] Furthermore, in the state shown in Figures 3, 4, and 5, where the helical shaft 22 moves to the left, the control unit 60 selects a gear of the rotation direction switching mechanism 42 that continues to transmit the rotation of the interlocking gear 41 to the generator drive gear 51, and interposes it between the interlocking gear 41 and the generator drive gear 51.

[0024] Based on the position of the spiral core rod 22 protruding from the end face of the cylindrical portion 20, the control unit 60 identifies that the movable plate 21 has reached a predetermined leftward position within the cylindrical portion 20, and at the same time controls the flow path switching door 33 to allow steam to flow into the second flow path 32, as shown in Figure 6, and simultaneously controls the opening / closing door 35 of the discharge port 34 to open. Therefore, the amount of steam flowing in from the second channel 32 increases on the left side of the moving plate 21, while the amount of steam on the right side of the moving plate 21 decreases as it is discharged from the outlet 34. As a result, the moving plate 21 moves to the right within the cylindrical section 20.

[0025] As shown in Figure 7, when the moving plate 21, which has moved to the right, reaches the position of the outlet 34, the steam on the left side of the moving plate 21 is discharged from the outlet 34 along with the steam on the right side of the moving plate 21. However, if the amount of steam flowing in from the second flow path 32 is large, the movement of the moving plate 21 to the right within the cylindrical portion 20 will continue.

[0026] When the control unit 60 determines, based on the position of the spiral core rod 22 protruding from the end face of the cylindrical portion 20, that the movable plate 21 has moved to the right of the position of the discharge port 34, it closes the opening / closing door 35 of the discharge port 34, as shown in Figure 8.

[0027] Furthermore, in the state shown in Figures 6, 7, and 8, where the helical shaft 22 moves to the right, the control unit 60 selects a gear different from the gear selected in Figure 3 as the gear of the rotation direction switching mechanism 42 that continues to transmit the rotation of the interlocking gear 41 to the generator drive gear 51, and interposes it between the interlocking gear 41 and the generator drive gear 51.

[0028] In this steam power generation device, under the control of the control unit 60, the states shown in Figures 3, 4, and 5 and the states shown in Figures 6, 7, and 8 are alternately repeated. Consequently, the rotating shaft of the generator 50 continues to rotate in the same direction, and power generation by the generator 50 is maintained.

[0029] In this description, when the movable plate 21 moves to the left within the cylindrical section 20, the opening / closing door 35 of the discharge port 34 is closed when the movable plate 21 reaches a position to the left of the position of the discharge port 34, and when the movable plate 21 moves to the right within the cylindrical section 20, the opening / closing door 35 of the discharge port 34 is closed when the movable plate 21 reaches a position to the right of the position of the discharge port 34. However, it is also possible to close the opening / closing door 35 of the discharge port 34 when the movable plate 21 moves to the left within the cylindrical section 20, when the movable plate 21 reaches the position of the right edge of the discharge port 34, and when the movable plate 21 moves to the right within the cylindrical section 20, when the movable plate 21 reaches the position of the left edge of the discharge port 34. [Explanation of Symbols]

[0030] 20 Cylindrical part 21 Mobile plate 22 Spiral core rod 30 tubes 31 First channel 32 Second channel 33 Flow path switching door 34 Outlet 35 Opening and closing doors 40 nuts 41 Interlocking gear 42 Rotation direction switching mechanism 51 Generator drive gear 50 Generators 60 Control Unit 71 Condenser 72 Boiler 421 Gear 422 Gears 423 Gears

Claims

1. A boiler that generates steam from water, A movable plate moves inside the cylindrical part, pushed by the steam generated by the boiler, To move the movable plate in one direction within the cylindrical portion, a first flow path is provided to guide the steam generated by the boiler to one end of the cylindrical portion, In order to move the movable plate in another direction within the cylindrical portion, a second flow path is provided to guide the steam generated by the boiler to the other end of the cylindrical portion, A flow path switching door for switching the inflow destination of the steam generated by the boiler to the first flow path or the second flow path, An outlet for discharging steam from inside the cylindrical part is provided on the side of the cylindrical part, An opening / closing door for opening and closing the aforementioned discharge port, A condenser that converts the steam discharged from the outlet into water and supplies it to the boiler, A rod-shaped body extending from one side of the movable plate, the tip of which protrudes from the other end face of the cylindrical part, and a spiral groove or projection provided on its circumferential surface, When the moving plate moves within the cylindrical portion, a motion conversion mechanism converts the reciprocating linear motion of the helical core rod protruding from the cylindrical portion into rotational motion in a constant direction. A generator driven by the rotational output of the aforementioned motion conversion mechanism, It is equipped with, A steam power generation device characterized in that the motion conversion mechanism comprises a nut that engages via a ball with the portion of the helical shaft protruding from the cylindrical part and converts the reciprocating linear motion of the helical shaft into rotational motion in the left or right direction; an interlocking gear that is linked to the rotation of the nut; and a rotation direction switching mechanism that converts the left or right rotational motion of the interlocking gear into rotational motion in a constant direction and transmits it to the rotating shaft of the generator.

2. A steam power generation apparatus according to claim 1, When the flow path switching door selects the first flow path as the destination for the steam inflow, the opening and closing door of the discharge port is opened until the movable plate, which moves within the cylindrical portion toward the other end, reaches at least the discharge port. When the flow path switching door selects the second flow path as the destination for the steam inflow, the opening / closing door of the discharge port is opened until the movable plate, which moves within the cylindrical portion toward one end, reaches at least the discharge port. A steam power generation device characterized by the following features.

3. A steam power generation device according to claim 2, When the flow path switching door selects the first flow path as the destination for the steam inflow, the opening / closing door of the discharge port is opened until the movable plate, which moves within the cylindrical portion toward the other end, passes the position of the discharge port. When the flow path switching door selects the second flow path as the destination for the steam inflow, the opening / closing door of the discharge port is opened until the movable plate, which moves within the cylindrical portion toward one end, passes the position of the discharge port. A steam power generation device characterized by the following features.

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