JP2020172783A - Sluice gate opening/closing system - Google Patents

Abstract

To provide a sluice gate opening/closing system capable of suppressing operation cost even in a sluice gate facility comprising a plurality of sluice gate doors.SOLUTION: A sluice gate opening/closing system 1 comprises: a secondary battery 122; a motor 8 driven by electric power supplied from the secondary battery 122; a door body 3 opening/closing by driving force of the motor 8; a brake 7 holding the door body 3; and a control device 123 controlling electric power supplied to the motor 8 and the brake 7 and charging the secondary battery 122 with regenerative electric power generated by the motor 8 in accordance with closing operation of the door body 3.SELECTED DRAWING: Figure 3

Description

The present invention relates to a floodgate opening / closing system.

Water gate facilities installed in rivers, waterway weirs, dams, etc. need to be operated reliably even in an emergency such as a flood due to heavy rain such as a typhoon or a tsunami due to an earthquake. In such an emergency, the probability of a power outage increases. Therefore, in the past, by providing a generator driven by a diesel engine or the like as an emergency generator, power transmission from the electric power company was cut off. However, it is often configured to supply power to the water gate equipment.

For example, Patent Document 1 discloses a water gate facility configured to be able to switch between a power system to which power is supplied from an electric power company and a power system from a generator that generates power in the event of a power failure. The prior art disclosed in Patent Document 1 is configured to connect a first electric circuit that is always energized and a second electric circuit that is not energized except when necessary, and thus consumes the power. Power is suppressed as much as possible.

Japanese Unexamined Patent Publication No. 2016-108763

However, in addition to requiring a relatively large amount of electric power to control the opening and closing of the water gate, the amount of electric power required for the water gate equipment having a plurality of water gates increases, so that the electric power cost may increase. .. In particular, if the required amount of electric power is 50 kW or more, a high-voltage contract will be signed with the electric power company, and a chief electrical engineer will have to be assigned to the floodgate equipment, which will increase operating costs. There is a risk of causing an increase.

The present invention has been made in view of such a situation, and an object of the present invention is to provide a floodgate opening / closing system capable of suppressing operating costs even in a floodgate facility having a plurality of floodgates. To do.

<First aspect of the present invention>
A first aspect of the present invention includes a secondary battery, an electric motor driven by the electric power supplied from the secondary battery, a door body that opens and closes by the power of the electric motor, and a brake that holds the door body. A water gate opening / closing system including a control device that controls the electric power supplied to the electric motor and the brake, and charges the secondary battery with the rechargeable electric power generated by the electric motor in accordance with the closing operation of the door body. ..

The water gate opening / closing system includes, for example, a secondary battery charged with electric power supplied from a commercial power source or the like, and is configured to be able to supply electric power required for opening / closing control of the door body from the secondary battery. That is, since the water gate opening / closing system can gradually charge the secondary battery with the amount of electric power required for opening the door body until the opening operation is performed, for example, the supplied commercial power supply can be used. The low-voltage power of less than 50 kW can be used, and the power cost related to the operation can be reduced.

In addition, since the floodgate opening / closing system can be operated with low-voltage power, it is not necessary to assign a chief electrical engineer to the floodgate equipment, and labor costs related to operation can be reduced. Further, since the water gate opening / closing system can regenerate electric power as the door body is closed, only the loss of the electric power required for the opening / closing control of the door body needs to be received, and the amount of electric power used can be reduced. Therefore, according to the first aspect of the present invention, it is possible to provide a floodgate opening / closing system capable of suppressing operating costs even in a floodgate facility provided with a plurality of floodgates.

<Second aspect of the present invention>
A second aspect of the present invention is the water gate opening / closing system in which the control device adjusts the charge amount of the secondary battery according to the open / closed state of the door body in the first aspect of the present invention described above.

In the second aspect of the present invention, when the door body is in the closed state, the control device makes adjustments to secure the charge amount expected to be consumed in the opening control of the door body in the secondary battery. Further, when the door body is in the open state, the control device adjusts the charge amount of the secondary battery so that the regenerative power that is expected to be recovered in the closing control of the door body can be charged. Thereby, according to the second aspect of the present invention, the secondary battery can reduce the possibility that the electric power obtained by the regeneration is not wasted and the electric power consumed by the power running is insufficient.

<Third aspect of the present invention>
In the third aspect of the present invention, in the first or second aspect of the present invention described above, the control device sets the charge / discharge control device for controlling the charge / discharge of the secondary battery and the open / closed state of the door body. The water gate control device includes a water gate control device to be managed, the water gate control device is supplied with electric power via a first uninterruptible power supply, and the brake is supplied with power via a second uninterruptible power supply. It is a water gate opening and closing system.

In the third aspect of the present invention, the water gate control device is supplied with electric power from the first uninterruptible power supply for a predetermined period even in the event of a power failure, and is supplied with electric power independently of the secondary battery. Therefore, even if a problem occurs in the secondary battery, the state of the water gate can be continuously managed. In addition, even in the event of a power failure, the brake is supplied with power from the second uninterruptible power supply for a predetermined period of time, and power is supplied independently of the secondary battery. Even if a problem occurs in the battery, the braking control can be released, so that the door body can be lowered by its own weight to close the operation when a tsunami or high tide occurs.

<Fourth aspect of the present invention>
A fourth aspect of the present invention is, in any one of the first to third aspects of the present invention described above, the secondary battery is a floodgate opening / closing system in which electric power is supplied from a photovoltaic power generation device.

According to the fourth aspect of the present invention, since the water gate opening / closing system can supply the electric power required for operation by the photovoltaic power generation device, for example, it is provided in a mountainous area where it is difficult to draw in commercial power. Can be operated independently.

According to the present invention, it is possible to provide a floodgate opening / closing system capable of suppressing operating costs even in a floodgate facility provided with a plurality of floodgates.

It is an overall view which shows typically the floodgate opening and closing system which concerns on this invention. It is a block diagram of the water gate opening and closing machine in the water gate opening and closing system which concerns on this invention. It is a block diagram of the power supply system which concerns on 1st Embodiment of this invention. It is a block diagram of the power supply system which concerns on 2nd Embodiment of this invention. It is a block diagram of the power supply system which concerns on 3rd Embodiment of this invention. It is a block diagram of the power supply system which concerns on 4th Embodiment of this invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The present invention is not limited to the contents described below, and can be arbitrarily modified and implemented without changing the gist thereof. In addition, the drawings used for explaining the embodiments are all schematically showing the constituent members, and are partially emphasized, enlarged, reduced, or omitted in order to deepen the understanding of the constituent members. It may not accurately represent the scale or shape.

<First Embodiment>
FIG. 1 is an overall view schematically showing a floodgate opening / closing system 1 according to the present invention. The floodgate opening / closing system 1 is a floodgate facility for opening or closing a channel as needed by being installed in a channel in a river, a weir, a dam, or the like. In the present embodiment, the sluice gate opening / closing system 1 is provided at the mouth of a river, for example, and is a sluice gate facility for suppressing a disaster by closing the sluice gate when a tsunami or a storm surge occurs. The water gate opening / closing system 1 according to the first embodiment of the present invention includes a water gate structure 2, a door body 3, a water gate opening / closing device 4, and a first power supply system 10 as an overall configuration.

The floodgate structure 2 is a structure arranged so as to straddle the flow path of the river. The door body 3 is provided so as to be able to move up and down to open or close the flow path of the river. The water gate opening / closing machine 4 suspends the door body 3 via the wire rope W, and as will be described in detail later, the wire rope W is wound up by the drum 5 provided inside to pull up the door body 3 and open the flow path. Then, by rotating the drum 5 in the direction opposite to the winding direction, the door body 3 is lowered and the flow path is closed.

The first power supply system 10 manages the electric power supplied to the various electric devices provided in the floodgate facility and the floodgate switch 4 as described in detail later. Here, the first power supply system 10 may be partially or wholly arranged outside the floodgate structure 2.

The water gate opening / closing system 1 may have a plurality of water gate structures 2 and door bodies 3, and the number of water gate opening / closing machines 4 and drums 5 for one door body 3 is not limited to this. Various changes are possible.

FIG. 2 is a configuration diagram of a floodgate switch 4 in the floodgate opening / closing system 1 according to the present invention. More specifically, the floodgate switch 4 according to the present embodiment includes a drum 5, a speed reducer 6, a brake 7, an electric motor 8, and an auxiliary brake 9, and is configured so that they can rotate in conjunction with each other. ..

More specifically, the water gate opening / closing device 4 transmits the rotational power of the electric motor 8 to the reduction gear 6 via the brake 7 in the de-braking state, and the reduction gear 6 decelerates the rotational power and outputs the rotational power to the drum 5. This is a so-called wire rope winch type gate opening / closing machine in which the drum 5 winds up the wire rope W to open the door body 3. Further, the floodgate opening / closing machine 4 stops the rotation of the drum 5 by operating the braking machine 7 in a state where the wire rope W is wound up, and holds the door body 3 in the open state. Further, the water gate opening / closing machine 4 recovers electric power while lowering the door body 3 at a speed corresponding to the regenerative torque of the electric motor 8 by rotating the electric motor 8 in the reverse direction while releasing the braking by the brake 7. When it is necessary to control the closing of the door body 3 in an emergency when the water gate opening / closing machine 4 loses the supplied electric power, the door body 3 can be lowered by its own weight by releasing the braking by the braking machine 7.

Here, the auxiliary brake 9 is an emergency braking device provided in the electric motor 8 as needed, and normally, the braking operation is executed and released at the same timing as the brake 7, for example, the brake 7 fails. If this happens, the rotation of the drum 5 is stopped independently. Further, each component of the floodgate switch 4 can be variously changed in relative arrangement, and may have a power transmission structure via another mechanism including a rack & pinion type and a spindle type. ..

Next, the first power supply system 10 included in the floodgate opening / closing system 1 will be described in more detail. FIG. 3 is a block diagram of the first power supply system 10 according to the first embodiment of the present invention. The first power supply system 10 includes a low-voltage opening / closing board 11, a power supply board 12, and a peripheral power system 13.

The low-voltage switchboard 11 is a lead-in switchboard that receives low-voltage power of less than 50 kW used in the water gate opening / closing system 1 from an electric power company, and includes a watt-hour meter (not shown).

The power supply panel 12 includes a charger 121, a secondary battery 122, and a control device 123, stores low-voltage power received via the low-voltage switchboard 11, and is necessary for the operation of the water gate switch 4 and its control. Output power. More specifically, the charger 121 charges the secondary battery 122 by converting the AC power supplied through the low-voltage opening / closing panel 11 into DC power and outputting it to the secondary battery 122. Further, the secondary battery 122 supplies electric power to each of the electric motor 8 and the brake 7 via the control device 123. Here, as the secondary battery 122, for example, a lithium ion battery can be adopted, but other types of storage batteries may be used.

Then, in the present embodiment, the control device 123 manages the electric power of the water gate opening / closing system 1 by adjusting and monitoring the charge amount (SOC: State Of Charge) of the secondary battery 122, and also manages the electric power 8 and the brake. The opening and closing of the water gate of the water gate opening and closing system 1 is controlled in an integrated manner, such as by monitoring the operation status of 7. More specifically, the control device 123 controls to supply electric power from the secondary battery 122 to the electric motor 8 when the door body 3 is opened. Further, when the door body 3 is closed, the control device 123 releases the brake 7 by energizing the brake 7 from the secondary battery 122, the door body 3 is closed, and the door body 3 is closed. The secondary battery 122 is charged with the regenerative power generated by the electric motor 8 as the door closes.

At this time, when the door body 3 is in the closed state, the control device 123 adjusts the secondary battery 122 to secure a necessary charge amount so that the electric power expected to be consumed in the opening control of the door body 3 can be discharged. Do. Further, when the door body 3 is in the open state, the control device 123 adjusts the charge amount of the secondary battery 122 so that the regenerative power that is expected to be recovered in the closing control of the door body 3 can be charged. As a result, the control device 123 adjusts the charge amount of the secondary battery 122 according to the open / closed state of the door body 3, so that the electric power obtained by regeneration is not wasted and the electric power consumed by power running is insufficient. It is possible to reduce the risk of this.

The peripheral power system 13 is peripheral equipment of the water gate opening / closing system 1 that requires electric power other than the opening / closing control of the door body 3, and includes a distribution board 131 and peripheral equipment 132. The distribution board 131 distributes a part of the electric power received from the electric power company to the peripheral devices 132 as needed. Here, the peripheral device 132 is, for example, an illumination that illuminates the water gate and its surroundings, a siren or a rotating light that notifies the surroundings of the opening / closing operation of the door body 3, an electric bulletin board that presents various information to the surroundings, and a water gate facility. It may include various devices that require power, such as surveillance cameras that monitor themselves.

In this embodiment, the commercial power source of the electric power company is illustrated as an external power source. However, by providing an external power generation device using renewable energy such as a solar power generation device (not shown), the commercial power source is provided. It may be used as a power source for charging the secondary battery 122 instead of the above.

As described above, the water gate opening / closing system 1 according to the first embodiment of the present invention gradually charges the secondary battery 122 with the low-voltage power supplied from the electric power company during the period when the door body 3 is not opened. , The necessary power is supplied from the secondary battery 122 to the electric motor 8 at the timing when the door body 3 is opened. Therefore, according to the water gate opening / closing system 1 according to the first embodiment of the present invention, even when a relatively large-scale electric power is required, such as the scale of the door body 3 or the inclusion of a plurality of door bodies 3. There is no need for a high-voltage contract of 50 kW or more with the electric power company, and there is no need to assign a chief electrical engineer to the water gate facility.

Further, since the water gate opening / closing system 1 according to the first embodiment of the present invention can regenerate electric power as the door body 3 is closed, only the loss of the electric power required for opening / closing control of the door body 3 is received from the electric power company. It suffices to receive power, and the power cost itself can be reduced.

Further, according to the water gate opening / closing system 1 according to the first embodiment of the present invention, even when the supply of commercial power is cut off due to a power failure, the power can be supplied from the secondary battery 122. There is no need to separately install a conventional UPS (uninterruptible power supply).

Then, according to the water gate opening / closing system 1 according to the first embodiment of the present invention, the control device 123 controls the charging / discharging of the secondary battery 122 and supplies electric power to the electric motor 8 and the brake 7. The power required for controlling the opening and closing of the gate can be centrally managed by the control device 123.

Here, in the conventional floodgate equipment, an emergency power source including a diesel engine or the like may be provided in case of a power failure. On the other hand, the water gate opening / closing system 1 according to the first embodiment of the present invention can take measures against power failure by the secondary battery 122, and does not need to be provided with the above-mentioned emergency power supply. As a result, according to the floodgate opening / closing system 1 according to the first embodiment of the present invention, regular maintenance such as refueling of an emergency power source and an oil barrier that prevents the spread of damage in the unlikely event of fuel leakage. In addition to eliminating the need for construction, it is possible to reduce the environmental load by eliminating carbon dioxide emissions and noise.

Therefore, according to the sluice gate opening / closing system 1 according to the first embodiment of the present invention, the operating cost can be suppressed even in the sluice gate equipment provided with a plurality of sluice gates.

<Second Embodiment>
Subsequently, the second embodiment of the present invention will be described. The water gate opening / closing system 1 according to the second embodiment has a part of the configuration of the first power supply system 10 of the first embodiment different from that of the first embodiment. Hereinafter, the parts different from those of the first embodiment will be described, and the components common to the first embodiment are designated by the same reference numerals and detailed description thereof will be omitted.

FIG. 4 is a block diagram of the second power supply system 20 according to the second embodiment of the present invention. The second power supply system 20 of the second embodiment includes the charge / discharge control device 124 in place of the control device 123 in the power supply panel 12 of the first power supply system 10 described above, and also from the power supply panel 12 via the machine side operation panel 14. The electric motor 8 and the brake 7 are controlled.

In the present embodiment, the charge / discharge control device 124 manages the electric power of the water gate opening / closing system 1 by adjusting and monitoring the charge amount of the secondary battery 122.

The machine-side operation panel 14 includes a motor control unit 141, a brake control unit 142, and a floodgate control device 143, and outputs electric power supplied from the power supply panel 12 to each of the electric motor 8 and the brake 7.

The electric motor control unit 141 comprises a bidirectional inverter, and converts the electric power output from the secondary battery 122 via the charge / discharge control device 124 into a voltage suitable for the operation of the electric motor 8 to supply the electric motor 8. It is driven (power running control) to open the door body 3. Further, the electric motor control unit 141 charges the secondary battery 122 via the charge / discharge control device 124 with the electric power generated by the electric motor 8 in the closing operation of lowering the door body 3 (regenerative control).

The brake control unit 142 is interposed between the secondary battery 122 and the brake 7, and during the period for holding the door body 3, the brake operation is performed by stopping the energization of the brake 7, and the door body is held. During the period of opening and closing 3, the braking operation is released by energizing the brake 7.

The floodgate control device 143 controls the motor control unit 141 and the brake control unit 142, respectively, and monitors the operating status of the electric motor 8 and the brake 7 to grasp the overall operation status of the floodgate opening / closing system 1. While controlling comprehensively. Here, the floodgate control device 143 constitutes a "control device" together with the charge / discharge control device 124 in the present embodiment.

As described above, the second power supply system 20 according to the second embodiment of the present invention has a configuration in which the electric motor 8 and the braker 7 are controlled via the machine side operation panel 14 like the conventional floodgate equipment, and thus is already installed. The above power supply panel 12 can be added to the floodgate to construct it. As a result, according to the floodgate opening / closing system 1 including the second power supply system 20 according to the second embodiment of the present invention, the same operation and effect as those of the above first embodiment can be obtained while leaving the configuration of the existing floodgate. it can.

<Third Embodiment>
Next, a third embodiment of the present invention will be described. In the floodgate opening / closing system 1 according to the third embodiment, a part of the configuration of the second power supply system 20 of the second embodiment is different from that of the second embodiment. Hereinafter, the parts different from those of the second embodiment will be described, and the components common to the second embodiment are designated by the same reference numerals and detailed description thereof will be omitted.

FIG. 5 is a block diagram of the third power supply system 30 according to the third embodiment of the present invention. The third power supply system 30 of the third embodiment includes UPS 15 for a floodgate control device as a "first uninterruptible power supply" and UPS 16 for a brake as a "second uninterruptible power supply". The electric power output from the low-pressure switch 11 is supplied to the floodgate control device 143 via the floodgate control device UPS15, and is also supplied to the brake control unit 142 via the brake UPS16.

Here, the UPS 15 for the water gate control device can operate the water gate control device 143 for a predetermined period even when the electric power from the low-voltage opening / closing panel 11 is cut off at the time of a power failure, and also for the water gate control. The power system to the device 143 is independent of the secondary battery 122. As a result, according to the floodgate opening / closing system 1 provided with the third power supply system 30 according to the third embodiment of the present invention, the floodgate control device 143 can be operated even if the secondary battery 122 should have a problem. Therefore, it is possible to grasp the overall operation status of the floodgate opening / closing system 1.

Further, the UPS 16 for a brake can operate the control unit 142 for a brake for a predetermined period even when the electric power from the low-voltage opening / closing panel 11 is cut off during a power failure, and the brake. The power system to the control unit 142 is independent of the secondary battery 122. As a result, according to the water gate opening / closing system 1 including the third power supply system 30 according to the third embodiment of the present invention, even if a problem occurs in the secondary battery 122, the brake control unit 142 Since the brake 7 can be released via the above, the door body 3 can be dropped by its own weight when a tsunami or a storm surge occurs.

<Fourth Embodiment>
Next, a fourth embodiment of the present invention will be described. In the floodgate opening / closing system 1 according to the fourth embodiment, a part of the configuration of the second power supply system 20 of the second embodiment is different from that of the second embodiment. Hereinafter, the parts different from those of the second embodiment will be described, and the components common to the second embodiment are designated by the same reference numerals and detailed description thereof will be omitted.

FIG. 6 is a block diagram of the fourth power supply system 40 according to the fourth embodiment of the present invention. The fourth power supply system 40 of the fourth embodiment further includes an emergency generator 17 in the second power supply system 20 of the second embodiment described above. The emergency generator 17 is connected so as to be able to supply electric power to at least one of the secondary battery 122, the brake 7, and the floodgate control device 143.

The emergency generator 17 is an emergency power source including, for example, a diesel engine, and can duplicate the power supply source at the time of a power failure together with the secondary battery 122. Here, since the fourth power supply system 40 is designed to be driven by low-voltage power supplied from the electric power company, the emergency generator 17 is introduced as a small-scale device as compared with the conventional emergency power supply. It is possible to suppress the cost associated with this. That is, according to the floodgate opening / closing system 1 provided with the fourth power supply system 40 according to the fourth embodiment of the present invention, safety is achieved by duplicating the power supply source while suppressing an increase in operating cost by operating with low voltage power. Can be improved.

The description of the embodiment of the floodgate opening / closing system 1 according to the present invention is completed above, but the present invention is not limited to the above embodiment. For example, in the above embodiment, the electric power company supplies commercial power to the water gate opening / closing system 1, and an emergency generator 17 is provided as needed. However, renewable energy such as a photovoltaic power generation device is used. A power supply source may be provided separately.

1 Water gate opening / closing system 2 Water gate structure 3 Door body 4 Water gate opening / closing machine 5 Drum 6 Reducer 7 Braking machine 8 Electric motor 9 Auxiliary braking machine 10 to 40 1st power supply system to 4th power supply system 11 Low pressure switchboard 12 Power supply board 121 Charging Device 122 Secondary battery 123 Control device 124 Charge / discharge control device 13 Peripheral power system 131 Distribution board 132 Peripheral equipment 14 Machine side operation panel 141 Electric motor control unit 142 Braker control unit 143 Water gate control device 15 UPS for water gate control device
16 UPS for brakes
17 Emergency generator W wire cable

Claims (4)

With a secondary battery
An electric motor driven by the electric power supplied from the secondary battery and
A door body that opens and closes with the power of the electric motor
A brake that holds the door body and
A water gate opening / closing system including a control device that controls the electric power supplied to the electric motor and the brake, and charges the secondary battery with the regenerative electric power generated by the electric motor in association with the closing operation of the door body. The water gate opening / closing system according to claim 1, wherein the control device adjusts the charge amount of the secondary battery according to the open / closed state of the door body. The control device includes a charge / discharge control device that controls the charge / discharge of the secondary battery and a floodgate control device that manages the open / closed state of the door body.
The water gate control device is supplied with electric power via the first uninterruptible power supply device.
The floodgate opening / closing system according to claim 1 or 2, wherein the brake is supplied with electric power via a second uninterruptible power supply. The water gate opening / closing system according to any one of claims 1 to 3, wherein the secondary battery is supplied with electric power from a photovoltaic power generation device.

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