JP2018176997A - Valve control system for marine vessel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a valve control system to solve a specific problem of a marine vessel.SOLUTION: A valve control system is provided with: a radio system operation terminal (23) and an autonomously drivable independent driving unit (22) arranged on each of valves, the driving unit (22) configuring a unit comprising: a DC power source(22B) provided with a lithium-ion battery (25) charged through rectified direct current power from a control power source (8) of power sources of a vessel; a driving section (22A) provided with a DC motor (24) for opening and closing valves, driven with supplied power from the DC power source; and a controller (22C) to control the supplied power, and the controller (22C) being provided with a radio transmitting and receiving unit (26) operated through radio instructions from the operation terminal (23), wherein the DC power source (22B) is provided with a discharge controller (30) which controls a charged amount of the battery (25) between 30% or more and 80% or less in a full charged amount 100% through a charging means (35) as well as repeats charging and discharging.SELECTED DRAWING: Figure 4

Description

The present invention relates to a system for remotely controlling the opening and closing of valves on a ship.

The ship is equipped with an electric motor for valve opening and closing for each valve, for example, of a large number of valves arranged in a ballast line, a bilge line, a fuel line, a fire extinguishing line, etc. The valve drive unit is provided to enable remote control.

The prior art related to this point will be described with reference to the drawings. As shown in FIG. 1, a large number of valves 1 which are required to be opened and closed in an emergency or emergency are provided with a drive unit 3 provided with a motor 2 for each valve. There is. The electric motor 2 of the drive unit 3 is remotely controlled by operating the control panel 5 which receives the power supply from the starting board 4 and controls the power supply of the starting board 4.

The electric motor 2 of the drive unit 3 and the start board 4 and the control board 5 use the AC power supply 6 supplied from the ship generator as a power source. There are two types of rated AC voltage of the ship power supply 6, AC440V and AC115V, 440V is used as the power supply 7, and 115V is used as the control power supply 8.

For this reason, the motor 2 of the drive unit 3 is an AC motor. At this time, the power supply of the drive unit 3 must use the power supply 7 among the in-shipment power supplies 6. The reason is that a large voltage drop occurs when starting current of 5 to 7 times the rated current flows when starting up the AC motor 2. Therefore, when using the control power supply 8, to the control device connected to the same system The supply voltage of the power supply may decrease, which may affect the operation of the control device.

As shown in FIG. 2, the drive unit 3 is configured to open and close the valve 1 via the reduction gear 9 by driving the AC motor 2, and a limit switch for stopping the AC motor 2 when the valve is fully opened and fully closed. 10 is provided, and a manual operation mechanism 11 capable of driving the reduction gear 9 manually is provided.

The start-up board 4 receives 440 V of the power supply 7 for the above-mentioned reason, but since the AC motor 2 of the drive unit 3 has a rated voltage of 115 V, a transformer 12 is provided for setting AC 440 V / 115 V. The power output from the transformer 12 is input to the magnet switch 14 via the ON / OFF of the machine side operation switch 13. The magnet switch 14 supplies power to the AC motor 2 of the drive unit 3 to command normal rotation and reverse rotation, and stops the power supply when abnormal current is detected, thereby preventing burnout of the AC motor 2 Do. As an auxiliary function, an open / close lamp 15 for displaying the open / close state of the valve 1 is provided.

A remote control switch 17 is provided on the control panel 5 via the changeover switch 16 separately from the machine-side operation switch 13 of the startup panel 4. The changeover switch 16 is always in the OFF state, and the magnet switch 14 is turned ON / OFF by using the machine side switch 13 preferentially, but if the changeover switch 16 is turned ON, the remote control panel 5 is remote By using the operation switch 17, the magnet switch 14 can be turned ON / OFF.

With the above configuration, the drive unit 3 provided in each valve 1 can be remotely controlled by the remote control switch 17 of the control panel 5 in addition to the machine side operation switch 13 of the start panel 4. However, since the ship is in the state of power unavailable (blackout) at the time of bombardment and equipment trouble, as described above, each drive unit 3 is provided with the manual operation mechanism 11, and the valve 1 is opened and closed manually. Being able to do that.

Patent No. 2614128 gazette

According to the prior art, when the power supply from the ship power supply 6 is normal, the valve 1 can be quickly opened and closed by remote control, and when the ship power supply 6 is in an unusable blackout state, manual operation is performed. Because there is an operating mechanism 9, it has excellent functions that can minimize the damage to ships.

However, in view of the demand for downsizing of equipment to be placed on ships, and the demand for labor-related issues where the declining birthrate accelerates and the number of crew members is reduced, or the recruitment of women is required, etc. There is.

With regard to the demand for compactness, since the inside of the ship is full of many devices, for example, as the devices are disposed to the side of the bed of the crew, the demand for compactness of each device is extremely high. In this regard, in the case of the prior art, since the starting board 4 disposed around the drive unit 3 is a contact type of electrical components used, the valve 1 and the drive unit 3 may include the wiring between the devices. The present situation is that the size is larger than the combination of, which is a limitation of the compactification. For example, in the case of the nominal diameter 100A, the starting board 4 requires 3.2 times the volume of the combination of the drive unit 3 and the valve 1.

With regard to labor-related requirements, in the case of the prior art, it is difficult to operate a large number of drive units 3 by the machine-side operation switch 13 of the start-up board 4 by a small number of crew members. If a blackout state of the ship power supply 6 occurs in an emergency, the large number of valves 1 must be opened and closed by the manual operation mechanism 11 of the drive unit 3, which will make the problem more serious. At this time, since the operation of the manual operation mechanism 11 requires heavy labor, it is awkward to have a female passenger perform this operation.

The present invention solves the above-mentioned problems, and provides a valve control system for ships capable of meeting the demands for compactness and labor-related matters.

Therefore, in the place where the present invention is configured as means, regarding a ship equipped with an in-ship power supply equipped with an AC power supply and a control power supply, a large number of valve drive units provided with a motor for opening and closing a valve for each valve In the valve control system for ships, which is configured to remotely control the motor, the control unit is configured of a wireless operation terminal and an autonomously drivable independent drive unit provided for each valve. Type drive unit includes a DC power supply unit provided with a battery charged by DC power rectified from the control power supply in the ship power supply, and a DC motor for opening and closing a valve driven by power supply from the DC power supply unit And a control unit for controlling the power supply, the control unit comprising: Lies in comprising a wireless transceiver unit is activated by a radio command from.

The wireless transmitting / receiving unit opens the valve by causing the direct current motor to rotate forward when receiving a normal rotation command from the operation terminal, and transmits an open indication signal to the operation terminal, and receives a reverse rotation instruction from the operation terminal When reversing the direct current motor, it is preferable that the valve be closed and that a close indication signal be sent to the operation terminal.

In a preferred embodiment of the present invention, the DC power supply unit comprises the battery comprising a lithium ion battery, a converter for rectifying alternating current power input from a control power supply to direct current power, and charging means for charging the battery by the direct current power. The charge controller controls the charge amount of the battery by the charge unit to 30% or more and 80% or less with respect to the full charge amount of the battery to 100%, and the charge and discharge are performed. It is configured to repeat.

According to the present invention, the independent drive unit 22 autonomously driven by the battery 25 is provided for each valve, and the operating terminal 23 is configured to enable the opening and closing of the valve 21. Even in the event of an emergency, it is possible to easily open and close a large number of valves 21 installed at remote locations.

At this time, the independent drive unit 22 that can be driven autonomously is configured to drive the DC motor 24 by the battery 25 and the required power supply is for the purpose of only charging the battery. It is possible to use the control power supply 8 among the power supply 7 (AC 440 V) and the control power supply 8 (AC 115 V) in 6, so that a large starting board including a transformer as in the prior art is not required, The whole can be configured to be compact, and it is possible to preferably meet the demand for downsizing of equipment required for ships. In addition, since the operation terminal 23 can use a versatile tablet terminal, it can be easily implemented only by creating relatively simple software.

The battery 25 uses a lithium ion battery, and is controlled by the charge controller 30 so that the charge amount is always 30% or more and 80% or less with respect to the full charge amount 100%. During the period from the occurrence of an emergency to the recovery of the ship's power supply, a sufficient period of storage of the necessary power is given, and during this period, the valve can be opened and closed even in the blackout state. Can provide an excellent ship valve control system.

It is the schematic which shows the whole conventional valve control system for ships. It is the schematic which shows the relationship between the power supply in a ship, a starting board, a control board, and a valve drive unit in the conventional valve control system for ships. It is the schematic which shows the whole valve control system for ships of this invention. It is the schematic which shows the relationship between the ship internal power supply in the valve control system for ships according to one Embodiment of this invention, an independent type drive unit, and an operation terminal. They are an external view showing the above-mentioned operation terminal, and a sectional view showing an internal structure of an independent type drive unit. Regarding the lithium ion battery constituting the battery of the present invention, (A) shows an undesirable overcharge state, (B) shows an undesirable overdischarge state, and (C) shows an unfavorable fixed charge state. The figure which shows, (D) is a figure which shows the charge condition by a preferable charge and discharge repetition type. (A) shows the effect when blackout occurs when the state of charge is 80%, and (B) shows the state when the state of charge is 55% for the period from battery charging to the next charging start FIG. 6C is a view showing an action when out occurs, and FIG. 6C is a view showing an action when blackout occurs when the charge state is 30%. An example of a charge controller is shown, (A) is a block diagram which shows a structure of a charge controller, (B) is a flowchart which shows the method of charge control.

Hereinafter, preferred embodiments of the present invention will be described in detail based on the drawings.

As shown in FIGS. 3 and 4, the valve control system for a ship according to the present invention is an autonomously drivable autonomous type provided for each valve with respect to a large number of valves 21 which are required to be opened and closed in an emergency or emergency. It is comprised by the drive unit 22 and the operation terminal 23 of a wireless system.

The independent drive unit 22 (hereinafter simply referred to as "drive unit 22") comprises a drive unit 22A provided with a direct current motor 24 for opening and closing the valve 21, a DC power supply unit 22B provided with a battery 25, and The control unit 22 </ b> C includes a wireless transmission / reception unit 26 remotely operated by the operation terminal 23.

The main feature of the drive unit 22 is that it is compact without the need for a large control panel as in the prior art, so that the above-described compactization problem can be solved, and operation from the operation terminal 23 even in an emergency situation where blackout occurs Because it is an independent type that can be driven autonomously, it can solve the above-mentioned labor-related problems, and further, since a general-purpose tablet terminal can be used as the operation terminal 23, relatively simple software can be used. It can be easily implemented only by creating it.

In order to provide such an autonomously drivable stand-alone drive unit 22, the battery 25 preferably uses a lithium ion battery. Lithium ion batteries have been provided for automobiles, portable terminals and personal computers from around 1997, and are currently mass-produced, so they can be procured inexpensively. In particular, (1) the self-discharge is extremely small (the discharge amount per month is about 2 to 8% of the total charge amount), (2) small and light, energy density is large, (3) memory effect is small There is an advantage. Therefore, it is suitable for the use form of the ship. That is, the valve drive of the ship is 1 to 2 times a month, which is less frequently used. In addition, the drive of the motor for opening and closing the valve is a short time such as 15 seconds or less, and the power consumption is small. Therefore, according to the lithium ion battery with a small self-discharge, if charging approximately six times a year, the system Can function properly.

As shown in FIG. 4, the drive unit 22A of the drive unit 22 is configured to open and close the valve 21 via the reduction gear 27 by driving the DC motor 24, and when the valve is fully open and fully closed, the DC motor 24 is It has a limit switch 28 for stopping. At this time, since the drive unit 22 is an independent type that can be driven autonomously, there is no need to provide a manual operation mechanism as in the prior art, and in this respect as well, the demand for compactness can be met.

The DC power supply unit 22B uses the control power supply 8 as a power supply among the AC power supply 7 (AC 440 V) and the control power supply 8 (AC 115 V) in the ship internal power supply 6 described in the prior art. Since the DC motor 24 of the drive unit 22A is driven by the battery 25 of the DC power supply unit 22B, there is no influence on the power supply in the ship due to the voltage drop at the start as in the AC motor of the prior art. The purpose of the power supply 22B is to charge the battery 25 only, and it is not necessary to use the power supply 7 as in the prior art, and the control power supply 8 can be used.

The DC power supply unit 22B is provided with a converter 29 for rectifying the AC power of the control power supply 8 inputted thereto into DC power, and a charge controller 30 for charging the battery 25 comprising the lithium ion battery with the rectified DC power. It is done.

The controller 22C is provided with a non-contact relay 31 for driving the DC motor 24 by the DC power of the battery 25, and is configured to operate the non-contact relay 31 by the wireless transmission / reception unit 26.

Therefore, when a command signal is transmitted from the operation terminal 23, the wireless transmitting / receiving unit 26 receiving this operates the non-contact relay 31 and rotates the DC motor 24 forward or reverse to open or close the valve 21. At this time, detection means for detecting the operating state of the limit switch 28 which is turned ON / OFF by full opening or closing of the valve is provided, and the detection signal is directed from the wireless transmission / reception unit 26 to the operation terminal 23 as an open / close indication signal. It is preferable to be configured to transmit and display the open state or the closed state on the operation terminal 23.

As shown in FIG. 5, the drive unit 22 is assembled to the valve 21 by mounting a housing on the shaft of the valve 21, and a DC motor 24 is mounted inside the housing via the reduction gear 27 and the DC By mounting the converter 29, the charge controller 30, the battery 25 and the non-contact relay 31 and the wireless transmission / reception unit 26 in parallel with the motor 24, a very compact unit is configured.

FIG. 6 shows the charging state of the battery 25. The battery becomes shorter in the overcharged state shown in FIG. 6A and the overdischarged state shown in FIG. 6B. Therefore, it is preferable to control so as to maintain a charge amount of several tens of percent with respect to the full capacity (full charge amount), and as a charge method for that purpose, the fixed type shown in FIG. The charge / discharge repeat type shown in 2.) is known, but in view of the peculiarity of the present invention for providing a valve control system for ships, it is preferable to adopt the charge / discharge repeat type which extends the battery life. In the case of the fixed type, maintaining the charge amount of 80% as shown in FIG. 6C is not preferable because there is a problem of temperature rise of the battery. On the other hand, in the case of the charge / discharge repetition type, there is no problem of the temperature rise of the battery, and the battery life can be maintained for a long time. Furthermore, in this case, as shown in FIG. 6D, by setting the upper limit value of the charge amount to 80% and setting the lower limit value of the charge amount by discharge to 30%, the charge and discharge are repeated. If it is configured, the temperature rise can be avoided by setting the charging time to 24 hours for a relatively long time, and a long period of 2 months will be given between the previous charging and the next charging start. During this period, sufficient electric power for driving the DC motor 24 of the drive unit 22A is secured, and an optimum result as a charging system for the ship valve control system is obtained.

As shown in FIG. 7, in order to drive the DC motor 24 of the drive unit 22A as a battery condition for a ship valve control system, it is necessary to always secure at least a 15% charge amount. On the other hand, as shown in FIG. 7A, when blackout occurs at a charge amount of 80%, a long period of 2.5 months is given until the charge amount decreases to 15% by discharge. Further, as shown in FIG. 7B, when blackout occurs when the charge amount is 55%, a period of 1.5 months is given until the charge amount decreases to 15% due to the discharge. Furthermore, as a worst case, even if blackout occurs when the charge amount immediately before the start of the next charge is 30%, a 0.5 month period is given until the charge amount decreases to 15% due to discharge. Be Therefore, a period of up to 2.5 months and a minimum of 0.5 months is given from the blackout occurrence to the recovery of the ship's power supply, and during that period, the valve can be opened and closed even if the blackout condition is maintained. The situation is secured.

FIG. 8 shows the configuration of the charge controller 30 for controlling the charge amount of the battery as described above to 30% or more and 80% or less and its operation.

As shown in FIG. 8A, the charge controller 30 measures the charge amount by comparing the measured value with the threshold value, and the charge amount measurement means 32 for measuring the charge amount based on the voltage of the battery 25. Charging instruction unit 34 that issues a charging instruction based on the determination result of the charging amount determination unit 33, and charging that charges the battery 25 by receiving instructions from the charging instruction unit 34. Means 35 are provided. In the present invention, in the charge amount determination means 33, a value of 30% or more and 80% or less of the charge amount is set as a threshold value.

During operation, as shown in FIG. 8B, the charge controller 30 starts measuring the charge amount based on the voltage of the battery 25 by the charge amount measurement means 32 (step S1). The measurement value of the charge measurement means 32 is determined by the charge amount determination means 33 whether the charge amount is 30% or more (step S2). When it is determined that the ratio is less than 30% (ie, NO), the battery 25 is charged by the charging unit 35 through the charging command unit 34. When it is determined that the charge amount is 30% or more (that is, YES), it is continuously determined by the charge amount determination unit 33 whether the charge amount is 80% or more (step S3). When it is determined that the ratio is less than 80% (ie, NO), the battery 25 is charged by the charging unit 35 through the charging command unit 34. If it is determined that the value is 80% or more (that is, YES), the charging by the charging unit 35 is stopped via the charging command unit 34, and the measurement is ended (step S4).

By repeating the above, the battery 25 always maintains the state in which the upper limit value of the charge amount is 80% and the lower limit value is 30%, and when the charge amount is less than 30% due to discharge etc., the next charge is immediately performed. Can be started. Therefore, since the necessary power is always secured while protecting the life of the battery 25 from being shortened, the operation terminal 23 drives the drive unit 22 at any time when a blackout emergency occurs. And allow the valve 21 to open and close.

Under the present circumstances, if it is comprised so that the monitoring result of the battery 25 by the charge controller 30 may be transmitted to the operation terminal 23 from the wireless transmission / reception unit 26, the change of the storage capacity of the battery 25 will be monitored and confirmation of replacement | exchange time etc. Becomes possible, and maintenance becomes easier. Alternatively, for example, when the discharge time in which the charge amount of the battery 25 decreases from 80% to 30% is shortened from two months to one month in a normal state, an alarm indicating that the replacement time has come is issued. It is good.

6 power supply 7 power supply 8 control power supply 21 control power supply 21 valve 22 independent drive unit 22A drive unit 22B DC power supply unit 22C control unit 23 operation terminal 24 DC motor 25 battery 26 wireless transmission / reception unit 27 reduction gear 28 limit switch 29 converter 30 charge controller 31 contactless relay 32 charge amount measuring means 33 charge amount determination means 34 charge command means 35 charge means

Claims (3)

A ship equipped with an in-house power supply equipped with an AC power supply and a control power supply, a large number of valve drive units provided with a motor for opening and closing a valve for each valve are arranged in the ship, and the ship is configured to remotely control the motor Valve control system for
It is composed of a wireless operation terminal (23) and an autonomously drivable independent drive unit (22) provided for each valve,
The independent drive unit (22) includes a DC power supply unit (22B) including a battery (25) charged by DC power rectified from the control power supply (8) among the ship power supplies, and the DC power supply unit A drive unit (22A) including a DC motor (24) for opening and closing a valve driven by power supply from the control unit, and a control unit (22C) for controlling the power supply;
The valve control system for a ship according to claim 1, wherein the control unit (22C) includes a wireless transmission / reception unit (26) operated by a wireless command from the operation terminal (23). The wireless transmission / reception unit (26) opens the valve (21) by causing the direct current motor (24) to rotate normally when receiving a normal rotation command from the operation terminal (23), and an open display signal toward the operation terminal And, when receiving a reverse rotation command from the operation terminal (23), reverses the DC motor (24) to close the valve (21) and transmits a closing indication signal to the operation terminal. The valve control system for a ship according to claim 1, characterized in that: The DC power supply unit (22B) includes the battery (25) made of a lithium ion battery, a converter (29) for rectifying AC power input from a control power supply into DC power, and charging for charging the battery by the DC power. A charge controller (30) provided with means (35),
The charge controller (30) controls the charge amount of the battery by the charge means (35) to 30% or more and 80% or less with respect to 100% of the full charge amount of the battery (25), and repeats charge and discharge. The ship valve control system according to claim 1 or 2, which is configured to return.

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