JP4598146B1 - Support structure for movable partition including shock absorbing structure - Google Patents

Abstract

[PROBLEMS] In a structure in which two pairs of similar shaft-like hoistways and hoisting rods connected with ropes that can accommodate / drain water continue to move up and down, and the hoisting rods fall freely with a considerable height and mass Relieve the impact of water and pump up or reuse some or more of the water resources.
A similar movable partition wall provided in the lower part of the hoistway is connected via a valve capable of controlling the opening and closing of each of the supporting cylinders, and a valve for supplying or discharging the medium in the cylinder. The upper and lower limit movement of the movable partition is guaranteed. In addition to the water conduit that communicates with the upper water storage tank, there are a plurality of water conduits that temporarily store the equivalent amount of the buffer stroke stored under the movable bulkhead, and the load that is applied to the pump with the actual head equivalent to the buffer stroke. Reduce. In combination with the movable partition wall in the lower part of the hoistway, it is possible to configure a circulating hydroelectric generator and obtain a power generation output.
[Selection] Figure 1

Description

  The present invention relates to an application technique of a device using a fluid or gas such as oil or air as a medium.

  In power generation equipment that uses water resources, two sets of hoisting pits that are connected to a shaft-like hoistway and are connected to each other to accommodate / drain water are provided. And a structure for obtaining electric power from the potential energy is known. (For example, see Patent Document 1)

Such a power generation device that uses natural energy is well known as a power generation means that is friendly to the global environment. However, in order to obtain a stable power generation output that is not affected by weather conditions, the lifting / lowering rod is considerably proportional to the potential energy. It is indispensable to relieve the impact force when free-falling at a height and mass and to reuse water resources used for power generation.
JP 2000-136767 A Japanese Patent Application No. 2008-291820

  Provided is a device that reduces the impact of a free fall even if the height and mass of the lift are proportional to the potential energy.

  The present invention relates to an impact absorbing structure provided at a lower part of a shaft-like hoistway and an apparatus for complementing a predetermined operation of a movable partition wall included therein.

  In a structure having two sets of hoistway and hoisting basin for storing water in the lower part, a movable partition wall that separates the hoistway under the surface of the stored water, and an opening and closing port that can control opening and closing in the movable partition wall, It consists of a plurality of conduit pipes connecting the lower part of the hoistway with the movable partition wall and the water storage tank, a valve for controlling opening and closing of the individual conduit pipes, and a check valve or a valve integrated with the check valve. There has been invented a hydroelectric generator characterized in that an impact absorbing structure is provided in each hoistway. (See Patent Document 2)

  The shock absorbing structure is configured to sequentially open and close valves provided in a series path of a plurality of water conduits by interposing a water storage under a movable partition wall that separates the hoistway from the impact force when the hoist is freely dropped. By sequentially limiting the above, there is a function of absorbing impact and pumping a part of the medium such as water to the water storage tank above the hoistway.

In order for two similar sets of hoisting rods to stably continue predetermined vertical movements, a considerable amount of water resources stored in the hoisting rods are stored in the water storage tank above the hoistway in each vertical movement cycle. Pump up or drain to the outside. At this time, the movable partition included in the shock absorbing structure can reach a predetermined upper and lower limit alternately, thereby enabling stable vertical movement.

  The movable partition moves to the lower limit by pumping the remaining medium with a pump or the like or discharges it to the outside, but the upper limit is the repulsive force due to the pressure accumulation of the shock absorber in the structure that supports the movable partition I am looking forward to it. However, if only the pressure accumulation of the shock absorber is relied upon, it cannot be surely moved to the upper limit when the pressure accumulation is lost due to loss or the like.

The shock absorber is replaced with a cylinder using a fluid or gas medium such as oil or air, one end of which is connected to each movable partition wall, and a valve 1 capable of controlling the opening and closing of the medium path between the cylinders, A support structure including a cylinder 2 and a valve 2 that can be controlled to be opened and closed to supply and discharge a medium from a tank and a pump.

Immediately before the elevating rod descends and reaches the movable partition, the cylinder that supports the movable partition that is pressed when the valve 1 is controlled to open is lowered so that the medium in the cylinder is transferred to the other cylinder. Force the upward movement of the movable partition that is supplied to and supported by.
It is clear that the impact force that presses the movable partition wall is weak in the vicinity of the lower limit at which the lifting / lowering rod decelerates by any means, and the path or tank for supplying the medium from the pump of the valve 2 to the cylinder By opening the path for discharging the medium to “open”, the movable partition can be forced to move to the upper limit or the lower limit.
Along with this, the media in both cylinders can be balanced and increased, so that the predetermined movement stroke of the movable partition can be varied.

  To alleviate the impact force by controlling the opening and closing of a plurality of conduits, the diameter of the entire conduit connected to the upper water storage tank is instantly reached when it reaches the movable partition where the descending speed of the lifting hoist is maximized. It is necessary to make the same amount up to the upper end leading to the upper water tank so as not to limit the flow rate of pumping or draining the lower water storage. As a result, water is stored in the entire conduit, including those that need not be pumped.

It is not necessary to pump more than the equivalent amount accommodated in the elevating rod, and therefore, a plurality of conduits 2 that temporarily accommodate the equivalent portion of the buffer stroke that stores water under the movable bulkhead separately from the conduit 1 that communicates with the upper reservoir. At the bottom of the hoistway. The lower end of each of the water conduits 2 is connected to a lower water storage tank below the movable partition wall via a valve that can be controlled to be opened and closed, and the upper end is connected to a pressure adjusting chamber provided for each hoistway. Since the actual head of the water conduit 2 may be equivalent to the buffer stroke, the load for pumping can be significantly reduced as compared with the case of the water conduit 1 alone.
Here, the water storage amount corresponding to the buffer stroke is set to an amount that takes into account the time for sequentially closing the water conduit in time series, that is, the deceleration time.

After the elevating rod freely falls and reaches the movable partition, the buffer stroke corresponding to the water stored under the movable partition is accommodated while the movable partition is decelerated by sequentially closing the valves in the series path to the conduit 2. Next, the equivalent portion accommodated in the lifting / lowering trough is pumped to the upper water storage tank by the water conduit 1.
The impact force that presses the movable partition wall in the vicinity of the lower limit at which the lifting / lowering rod is decelerating is weak. Therefore, before the buffer stroke is fully accommodated in the water conduit 2, the valve is temporarily closed and the upper water storage tank In the operation of opening the valve again and storing the remaining amount after pumping up the water, the impact can be pumped to the upper water tank more effectively because the impact force is not weak.

The side surface of the movable partition wall and the inner wall of the hoistway are hermetically sealed, and when the opening / closing port that can be controlled to open and close is closed, the water stored under the movable partition wall does not easily flow into the hoistway. When the above-described support structure is applied to the support of the movable partition, the other of the movable partitions that are pressed and lowered by the elevating rod rises relatively. When all the valves in the series path of the water conduit 2 are opened at this rising timing, the pressure below the movable partition is maintained, so that the amount corresponding to the buffer stroke stored in the water conduit 2 is movable. Appropriate under the bulkhead.
The pressure adjusting chamber provided for each hoistway assists the speed reduction performance of the movable partition wall by compressing the medium such as air to be compressed and increasing the pressure when storing the water in the water conduit 2, and reverses the pressure control chamber. When draining the water stored in the water conduit 2, the application of the compressed high pressure assists the application under the movable partition wall.

Two sets of hoisting pits that can be connected to the shaft-like hoistway with ropes to store / drain water, and two movable partitions at the lower part of the hoistway, and control the water supply / drainage to the hoisting hoist to move up and down In the device that continues the above, when the support structure of the movable partition wall that is included together with the shock absorbing structure described above is applied, the impact is alleviated when it falls freely and a part accommodated in the lifting rod is stored in the upper reservoir. Water can be pumped and the power generation means can obtain power from, for example, a power generation turbine connected to a mechanically coupled pulley shaft.
Although the energy density pulsates with a cycle uniquely determined by the upper and lower limit movement strokes of the lifting / lowering hoist, it is possible to control starting and stopping at any timing by supplying and draining to the hoisting / lowering hoist, so multiple devices of the same scale can be changed by changing the phase. By operating, the energy density can be brought close to leveling.

Since it acts like a pump, it is possible to minimize the discharge of the medium such as water used for the vertical movement of the lifting rod to the outside of the device.

  Two sets of hoisting rods that are connected to a shaft-like hoistway by a rope and can accommodate / drain water, and two shock absorbing structures including a movable partition wall at the lower part of the hoisting channel are provided to supply and drain water to the hoisting shaft. It is a device that complements so that similar lifting rods can move up and down alternately in a structure that obtains electric power from the target potential energy by continuing vertical movement by controlling timely.

FIG. 1 is a perspective view of a movable partition support structure according to the first embodiment of the present invention.
From the figure, the hydraulic cylinders 11a to 11d and the support bases 12a to 12d for supporting the movable partition wall 10 and the hydraulic cylinders 21a to 21d and the support bases 22a to 22d for supporting the movable partition wall 20 are respectively shown in independent shafts not shown. A similar lifting rod installed at the lower part of the hoistway alternately pushes down the movable bulkhead.
The oil paths of the hydraulic cylinders 11 a to 11 d and the hydraulic cylinders 21 a to 21 d can be controlled to open and close by the valve 30 via the pipe 40. Further, the hydraulic cylinders 11a to 11d are connected to an oil tank and a hydraulic pump (not shown) through conduits 41a and 41b and a conduit 42a through a valve 31 that can be controlled to open and close, and hydraulic valves 21a to 21d through a valve 32 that can be controlled to open and close. 42b is connected.

FIG. 2 shows a hydraulic circuit diagram according to FIG.
Since the hydraulic cylinders 11a to 11d perform the same operation, the hydraulic cylinders 11a to 21d are modeled as the hydraulic cylinder 21.
When an elevating rod (not shown) descends and pushes down the movable partition wall 10 (or 20), when the electromagnetic solenoid SOL1 of the valve 30 and the electromagnetic solenoid SOL of the valve 35 are energized, the lower part in the hydraulic cylinder 11 (or 21) From the upper part in the hydraulic cylinder 21 (or 11) to the lower part in the other hydraulic cylinder, the oil moves from the upper part in the other hydraulic cylinder to the movable partition 20 (or 10). By switching the excitation to the electromagnetic solenoid SOL2 of the valve 30, the flow rate is limited by the flow rate adjusting valve 57 in the oil path to limit the descending / raising speed of the movable partition wall. Here, the check valves 53 and 54 and the check valves 58 and 60 prevent the backflow from the hydraulic cylinders 11 and 21 to the hydraulic pump 51.

When the elevating / lowering rod decelerates and the movable bulkhead 10 (or 20) does not reach the lower limit, both the solenoids of the valves 30 and 35 are turned off, and the electromagnetic solenoid SOL2 of the valve 36 (or 37) is excited to hydraulically When oil is supplied from the hydraulic pump 51 to the upper part of the cylinder 11 (or 21) via the check valve 59 (or 61), the electromagnetic solenoid SOL1 of the valve 31 (or 32) is excited at the same time, The same amount is discharged from the lower part to the oil tank 50.
In order to ensure the upper limit position of the other movable partition wall 20 (or 10), the electromagnetic solenoid SOL2 of the valve 32 (or 31) is excited, and a flow rate adjusting valve with a check valve is provided in the lower part of the hydraulic cylinder 21 (or 11). When the oil is supplied through 56 (or 55), the electromagnetic solenoid SOL of the valve 39 (or 38) and the electromagnetic solenoid SOL1 of the valve 37 (or 36) are excited simultaneously, and the same amount is supplied from the upper part in the cylinder. Discharge into the oil tank 50.
The moving speed of the movable partition can be controlled quickly when the electromagnetic solenoid SOL of the valve 33 (or 34) is energized, and at a low speed that restricts the flow rate with the non-excited flow rate adjusting valve 55 (or 56). . Thus, the movement to the minimum and the upper limit of the movable partition walls 10 and 20 can be ensured.

  The upper limit of the movable partition walls 10 and 20 is set by increasing or decreasing the amount of oil in the hydraulic cylinders 11 and 12. Accordingly, the upper and lower limit movement strokes of the movable partition can be arbitrarily set within the movable range of the rod of the hydraulic cylinder.

FIG. 3 to FIG. 6 sequentially show the structure of the first embodiment of the hydroelectric generator according to the present invention and the state return for explaining the operation. 3 to 6, the opening and closing control of the water distribution doors 102 a and 102 b of the upper water storage tank 110 is performed, so that the water distribution ports 101 a at the upper part of the hoistway 100 a and the hoistway 120 a and 120 b from the water distribution port 101 b at the upper part of the hoistway 100 b are respectively provided. Can supply water. The hoisting rods 120a and 120b are connected to the upper ends of the hoisting rods 120a and 120b, respectively, and have upper and lower intake ports that can control the opening and closing of the drainage ports at the upper part. Continue to move up and down alternately.
In addition, the side surfaces of the movable partition walls 10 and 20 and the inner wall of the hoistway are hermetically sealed, and when the opening / closing opening that can be controlled for opening and closing is closed, the water storage under the movable partition wall is stored in the hoistway. Does not easily drain into.

  The movable bulkhead support structure according to claim 1 is provided in the lower portions of the hoistways 100a and 100b. The movable partition walls 10 and 20 have opening / closing ports that can be controlled to open and close, the movable partition wall 10 is supported by hydraulic cylinders 11a and 11b, and the movable partition wall 20 is supported by hydraulic cylinders 21a and 21b. The large diameter pipe 40 communicates with the valve 30.

Valves 141a to 141d that have lower reservoirs 111a and 111b below the movable partition walls 10 and 20, and that can be controlled to open and close in a serial path from the lower reservoir to the upper reservoir 110 by conduits 131a to 131d, and the lower reservoir Communication is made via check valves 142a to 142d which prevent backflow into the valve. The total volume of the water guide pipes 131a and 131b and 131c and 131d is set to an amount corresponding to the accommodation of the lifting / lowering rod.
By the water conduits 132a and 132b and the water conduits 133a and 133b, the amount of water supplied from the upper water storage tank 110 to above or below the movable partition wall can be adjusted via valves 143a to 143c that can be controlled to open and close in series. Further, the water in the lower water storage tank can be drained to the outside of the apparatus through the water conduits 134a and 134b and the valves 144a and 144b that can be controlled to open and close in series.

The water stored in the lower water tank 111a including the equivalent of the buffer stroke under the movable partition 10 is equivalent to the buffer stroke when the movable partition is pressed and lowered to the water conduits 130a to 130j via the valves 140a to 140j that can be controlled to open and close. To store water. Similarly, when the movable partition 20 is pressed and lowered from the conduits 130k to 130t through the valves 140k to 140t that can be controlled to open and close, water corresponding to the buffer stroke below the movable partition is stored.
The pressure adjusting chambers 112a and 112b are sealed with air or the like enclosed, and when the portion corresponding to the buffer stroke is accommodated in the water conduit, the pressure adjusting chambers 112a and 112b are pressurized. Assist.

From FIG. 3, the lifting rod 120a and the movable partition 10 are at the upper limit, and the movable partition 20 and the lifting rod 120b containing water inside are at the lower limit position. A portion corresponding to the buffer stroke when the movable partition 20 is pressed in the previous cycle is accommodated in the water conduits 130k to 130t. At this time, the respective valves 140a to 140t are closed, and the pressure in the pressure adjusting chamber 112b is compressed and increased. Here, since the valve 30 is closed, the movable partition walls 10 and 20 maintain the same state.
The valves 141a to 141d in the water conduits 131a and 131b and 131c and 131d communicating with the upper water tank 110 are normally open. The inside of the water conduit is always filled with an amount accommodated in the lifting / lowering rod, and similarly, the bottom surface is always subjected to a pressure proportional to the height.

As shown in FIG. 4, when the elevating rod 120a containing water is lowered and reaches the movable partition wall 10, and immediately before this, when the valve 30 is opened, the movable partition wall 10 starts to descend from the holding state, and the corresponding movable plate The partition wall 20 rises as oil flows from the hydraulic cylinders 11a and 11b through the pipe 40 into the hydraulic cylinders 21a and 21b. Here, the water storage on the movable partition wall intervenes to lower the movable partition wall in advance to avoid a direct collision.
When the opening / closing opening on the upper and lower sides of the lifting / lowering rod is opened before the ascending / descending rod 120b rises, the stored water remains on the movable partition wall 20 and rises.

As shown in FIG. 5, the movable partition 10 is pressed by the descending elevating rod 120a, the rods of the supporting hydraulic cylinders 11a and 11b are lowered by the buffer stroke, and the opposing movable partition 20 is moved by the same stroke by the supporting hydraulic cylinders 21a and 21b. It is rising. With the passage of time when the movable partition wall 10 descends, the descent speed is reduced by sequentially closing the valves 140a to 140j when accommodating the buffer strokes in the water conduits 130a to 130j. When the corresponding movable partition 20 rises and the portion accommodated in the water conduits 130k to 130t is allocated below the movable partition, the movable partition is opened and the valves 140a to 140t are all closed. "To.
As the movable partition wall 10 descends thereafter, the valves 141 a and 141 b are sequentially “closed”, so that the portion corresponding to the accommodation in the lifting / lowering rod is pumped to the upper water storage tank 110.

As shown in FIG. 6, the movable partition 10 and the lifting rod 120a containing water therein are at the lower limit, and the lifting rod 120b and the movable partition 20 are at the upper limit position. In the water conduits 130a to 130j, a portion corresponding to a buffer stroke when the movable partition wall 10 is pressed first is accommodated, and a medium such as air is compressed in the pressure adjusting chamber 112a to increase the pressure. In the next cycle, the water stored in the conduit is drained to assist under the movable partition.
Under the movable partition 20, the side surface of the movable partition and the inner wall of the hoistway are tightly sealed. Therefore, after the corresponding portion accommodated in the water conduits 130 k to 130 t is applied, the opening and closing opening in the movable partition is opened. The portion corresponding to the portion opened and accommodated in the lifting rod 120b is further applied.
When the movable partition does not reach the lower limit due to deceleration, oil not shown is supplied together with supplying oil from the hydraulic pump (not shown) to the hydraulic cylinder supporting the movable partition. It is possible to force the movement to the lower limit by discharging to the tank. When there is no such control structure, the only way to discharge the remaining amount of water that cannot be pumped up after the supply / drainage to the lifting / lowering rod is to the outside of the device. Can be minimized.

Thereafter, by repeating the same control, the lifting / lowering rod can continue to move up and down alternately.
In this way, it is possible to relieve the impact when the lifting rod falls freely and to recycle a part of the water used for the vertical movement of the lifting rod by the impact force of kinetic energy equivalent to potential energy It is. The power generation means can obtain electric power from, for example, a power generation turbine connected to the pulley shaft of the pulley 103b that is mechanically coupled.

FIG. 7 is a diagram illustrating the structure of the hydroelectric generator according to the second embodiment of the present invention.
3 to FIG. 6 in the first embodiment is that the upper water tank 110 is submerged in the hoistway 100a and the inside of the hoistway 100a, and the impurities are removed by the impurity removing device 150 to enter the upper water tank. The intake pipes 131a to 131d do not communicate with the upper water storage tank.
Since water can always be taken into the elevating rods 120a and 120b, it is not necessary to pump water into the upper water tank, and all the water drained by the elevating rods into the lower water tanks 111a and 111b can be discharged into the water outside the apparatus. Others are the same as the first embodiment including the operation.
In such operations, energy loss associated with pumping is reduced, so that improvement in power generation efficiency can be expected.

In a structure having two sets of similar hoistway and hoisting basin and movable partition at the lower part of the hoistway, by applying it to a circulating hydroelectric power generation device provided with the movable partition, to obtain power generation output Is possible.

It is a perspective view of the support structure of the movable partition of a first embodiment concerning the present invention. 1 is a hydraulic circuit diagram of a first embodiment according to the present invention. It is the 1st figure of the state return explaining the structure of the hydroelectric generator of a first embodiment concerning the present invention. It is a 2nd figure of the state return explaining the structure of the hydraulic power unit of 1st embodiment which concerns on this invention. It is a 3rd figure of the state return explaining the structure of the hydraulic power unit of 1st embodiment which concerns on this invention. It is a 4th figure of the state return explaining the structure of the hydraulic power unit of 1st embodiment which concerns on this invention. It is a figure explaining the structure of the hydraulic power unit of 2nd embodiment which concerns on this invention.

10 and 20 Movable partition walls 11 and 21 Hydraulic cylinders 11a to 11d Hydraulic cylinders 12a to 12d Support bases 13 and 23 Opening and closing ports 21a to 21d in the movable partition walls Hydraulic cylinders 22a to 22d Support bases 30 Valves 31 and 32 Valves 33 and 34 Valves 35 Valves 36 to 39 Valve 40 Pipes 41a and 41b Conduit 42a and 42b Conduit 50 Oil tank 51 Hydraulic pump 52 Oil pump drive motor 53 and 54 Check valve 55 and 56 Flow regulating valve 57 with check valve Flow regulating valve 58 to 61 Check Valves 100a and 100b Hoistway 101a and 101b Water distribution port 102a and 102b Water distribution port 103a to 103c Pulley 104 Rope 110 Upper water storage tank 111a and 111b Lower water storage tank 112a and 112b Pressure adjusting chamber 120a and 120b Hoisting rod 130a to 130t 1a from 131d conduit 132a and 132b conduit 133a and 133b conduit 134a and 134b conduit 140a 142d check valve 143a and 143b valves 144a and 144b valve 150 impurity removing device from 141d valve 142a from 140t valve 141a from

Claims (1)

In a structure having two sets of similar hoistway and hoisting rod and a movable partition wall in the lower part of the hoistway and storing water under the movable partition wall, each of the movable partition walls is supported by the upper end of each cylinder. A valve capable of controlling opening / closing to connect a medium path between the upper parts of the cylinders or a medium path between the lower parts, and a valve capable of controlling opening / closing to connect a pump and a tank to the medium paths at the upper and lower parts of the cylinders. When the one of the movable partition walls is pressed by the lowering of one of the elevating rods to raise the other movable partition wall, the valve between the upper part and the lower part of the cylinder is controlled to open. By making the movement free, using the impact force when the lifting / lowering rod descends and the potential energy generated by storing water under the movable partition, it is necessary to allocate the medium from the pump to the cylinder. Support structure, characterized in that the minimizing the movable partition wall energy consumption can forcibly move the upper or lower limit.