JP5358650B2 - Intake gate control system and intake volume control unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a simple structured, low cost intake gate control system for controlling an intake gate installed in a water intake channel of a hydraulic power plant. <P>SOLUTION: An intake gate control system for controlling an intake gate 4 installed in a water intake channel 2 of a hydraulic power plant includes: a drive mechanism 3 which opens/closes the intake gate 4 on the basis of a driving signal; dangerous water level detecting means 5 which is provided downstream of the intake gate 4 to detect an intake gate fully-closing water level A; control water level detecting means 6 which detects an intake gate opening water level C and an intake gate closing water level B; and a control part 7 which sends a driving signal for operating the drive mechanism 3 on the basis of detection signals sent from the control water level detecting means 6 and the dangerous water level detecting means 5. When the intake gate fully-closing water level A is detected, the intake gate control system makes the intake gate 4 close fully, and when the intake gate opening water level C or the intake gate closing water level B is detected, it makes the intake gate 4 open or close by a desired amount. <P>COPYRIGHT: (C)2013,JPO&amp;INPIT

Description

  The present invention relates to an intake gate control system for controlling an intake gate provided in an intake passage of a hydroelectric power plant, and an intake amount control unit for automatically controlling an intake amount by the intake gate provided in the intake passage of the hydroelectric power plant. About.

Conventionally, there has been a case where small-scale hydroelectric power generation is performed by, for example, taking water used for power generation in a hydroelectric power plant into a water intake channel again.
Such a small-scale hydropower intake channel is equipped with a control mechanism that automatically closes the intake gate when the water level reaches the critical water level. In some cases, a mechanism for automatically controlling the amount of water intake is not provided in terms of cost effectiveness.
Therefore, in small-scale hydropower plants, the opening of the intake gate is fixed low so that the permitted water volume is not exceeded and the dangerous water level is not reached, and it is difficult to perform detailed control in real time, and use is permitted. There was a problem that it was difficult to use all the water. As a result, there has been a problem that it is difficult to improve the power generation efficiency when performing small-scale hydropower generation.
For this reason, it has been desired to develop a water intake gate control system that can efficiently and automatically control the amount of water taken from the water intake channel with a simple configuration and is inexpensive in construction cost.
Prior art documents having the same technical contents as the present invention have not been found at present, but the following are known as prior arts in related technical fields.

Patent Document 1 has a name of “an intake gate opening and closing control device and an intake gate opening and closing control method”, and an apparatus for controlling opening and closing of an intake gate installed in a water conduit through which water taken from a water flow flows. An invention relating to the control method is disclosed.
The application according to Patent Document 1 is based on the same applicant as the present application, and the intake gate opening and closing control device according to the present invention is an intake gate installed in a water conduit through which water taken from a water flow flows. An opening / closing control device for a water intake gate that controls opening and closing, and an intrusion prevention member that prevents a floating substance floating in the water flow from entering the water flow channel at an entrance from the water flow to the water flow channel And monitoring means for monitoring the presence or absence of a difference in water level between the water level of the water flow and the water level downstream of the water introduction channel with respect to the intrusion prevention member, and the occurrence of a water level difference in the monitoring means And a gate closing means for closing the intake gate, and a gate opening means for opening the intake gate after a lapse of a certain time after the intake gate is closed by the closing means. .
According to the invention disclosed in Patent Document 1 as described above, a certain amount of water can be taken without causing a drop in the amount of water intake or breakage of the intrusion prevention member.

Patent Document 2 discloses a device related to a control device for a water intake gate in water intake equipment such as a hydroelectric power plant under the name of “water intake control device”.
The water intake control device, which is a device disclosed in Patent Document 2, will be described using the reference numerals used in the document as they are. Water quality such as a water level meter 14, a mass meter 15, and a turbidimeter 16 near the water intake of the reservoir. A sensor is provided, and the water intake stop / resumption unit 12 of the control unit 11 using a microcomputer determines whether to stop water intake or resume water intake based on information from the water level meter and the water quality sensors 15 and 16. The switchgear 4 is actuated.
According to the device disclosed in Patent Document 2 as described above, it is possible to automate the stoppage and resumption of water intake, which has been dependent on manpower, and labor saving becomes possible. Since it is possible to judge whether to stop or restart water intake based on quantitative data related to water intake, it is possible to eliminate the premature stop of water intake or the delay in resuming water intake and extend the water intake time. At the power plant, the power generation time can be extended and the amount of generated power can be increased.

Patent Document 3 discloses an invention relating to an automatic control system for sluices (including sluices) provided in a waterway at a confluence of small and medium rivers flowing into a large river under the name of “automatic control system for sluices”.
The automatic sluice control system disclosed in Patent Document 3 will be described using the reference numerals described in the document as they are. Closed operation upper limit outside water level sensor 4, closed operation outside water level sensor 5 and opening operation outside water level sensor 6 are provided for detecting the operation upper limit water level, the closing operation water level and the opening operation water level, respectively, and the door body 1 is fully opened, fully closed and slightly opened. The door body opening degree sensor 7 for detecting the degree of water and the inside / outside water level difference detecting device 2 provided with the sensor 23 for detecting the inside / outside water level difference are provided in the door body 1, and the information from the inside / outside water level difference detecting device 2 and each sensor is used. A control device 8 for controlling the automatic opening / closing of the door 1 is provided.
A detection device that detects the difference between the internal and external water levels can be attached to the door body to obtain information on the difference between the internal and external water levels with a simple structure and at a low cost. It is also possible to deal with the situation of obstruction due to external factors of the water channel and the water channel.

Patent Document 4 discloses an invention relating to a water level control system on the upstream side of a dam in an automatic gate control device of an estuary weir under the name of “a water level control system of an estuary weir”.
The invention disclosed in Patent Document 4 is an estuary weir gate automatic control device that measures the water level inside the weir and the water level outside the weir and opens the gate when the difference exceeds a predetermined value. When the water level is lower than the reference water level, gate opening / closing control is performed so that the water level in the weir becomes the specified water level, the water level outside the weir is higher than the reference water level, and the value obtained by adding the set water level to the water level outside the weir is When the water level is lower than the weir level, gate opening / closing control is performed so that the water level in the weir becomes the value obtained by adding the set water level to the water level outside the weir, and the value obtained by adding the set water level to the water level outside the weir If it exceeds, the gate is fully closed.
According to the above-described configuration, the water level in the weir can be made to follow the water level outside the weir correctly. As a result, the discharge operation of the water level in the weir can be performed efficiently, and the salt water can be prevented from going up.

JP 2007-77624 A Japanese Utility Model Publication No. 6-67534 JP 2000-226842 A JP 52-121932 A

In the inventions disclosed in the above-mentioned Patent Documents 1 and 2, the opening and closing of the intake gate is only controlled, and the technique for adjusting the opening of the intake gate in order to make the amount of water intake during hydropower generation appropriate. Absent.
Therefore, in the inventions disclosed in Patent Documents 1 and 2, the intake gate cannot be controlled so as to continue to efficiently acquire the intake amount permitted for hydroelectric power generation.

The invention disclosed in Patent Document 3 is not a technique for appropriately adjusting the opening degree of the intake gate (door body 1) in order to obtain a desired amount of water. For this reason, the opening of the intake gate (door body 1) can be automatically adjusted so that the target amount of water can be obtained even if it can cope with the situation of the flood level and the obstruction caused by external factors of the water channel. I couldn't control it.
Further, in the invention disclosed in Patent Document 3, when a specific water level is detected by the water level sensor, it is immediately reflected in the opening / closing operation of the water intake gate (door body 1). It is expected that the intake gate (door body 1) will be opened and closed even when it is temporary (instantaneous) such as by a wave.
Therefore, in the intake gate (door body 1), there is a possibility that actually unnecessary opening and closing operations may be performed. When the invention disclosed in Patent Document 3 is provided in the intake channel in hydroelectric power generation, This was not preferable because it caused vertical movement (hunting).

  According to the invention disclosed in Patent Document 4, each water control gate can be opened and closed stepwise depending on the water level deviation, but in that case, each time based on the measured values of the water level in the dam and the water level outside the dam. It was necessary to calculate the gate opening by performing arithmetic processing. For this reason, the control mechanism itself becomes complicated, and the introduction and maintenance of the equipment is costly. Therefore, it is difficult to introduce the control mechanism into the intake gate of the intake passage for small-scale hydroelectric power generation.

  The present invention has been made in response to such a conventional situation, and an object thereof is to efficiently and automatically adjust the intake gate for making the amount of water taken in a desired amount in the intake channel of the hydroelectric power plant. In this case, it is not necessary to perform complicated arithmetic processing to control the opening of the intake gate, and the intake gate control system and intake volume control unit with a simple configuration and high cost performance are provided. There is to do.

In order to achieve the above object, a water intake gate control system according to claim 1 is a water intake gate control system for controlling a water intake gate provided in a water intake passage of a hydroelectric power plant, wherein the water intake gate is controlled based on a drive signal. A drive mechanism that opens and closes, a dangerous water level detection means that detects the closed water level of the intake gate, which is provided downstream of the intake gate, and an intake gate opening water level and intake gate closing operation that are provided downstream of the intake gate. A control water level detecting means for detecting the water level; and a control section for transmitting a drive signal for operating the drive mechanism based on detection signals transmitted from the control water level detection means and the dangerous water level detection means. When the water intake gate fully closed water level is detected by the dangerous water level detecting means, a first drive signal for fully closing the water intake gate is transmitted and the control water level detecting means is When the intake gate opening water level or the intake gate closing water level is detected, a second drive signal for opening or closing the intake gate by a desired amount is transmitted, and the first drive signal is the second drive signal. It is characterized by being given priority over the drive signal.
In the invention of the above configuration, the drive mechanism has an action of opening and closing the intake gate based on the first drive signal and the second drive signal which are drive signals transmitted from the control unit.
The dangerous water level detection means is provided on the downstream side of the intake gate, detects the intake gate fully closed water level, which is a high water level that may damage the hydroelectric power plant, and sends the detection signal to the control unit. Has the effect of sending.
Further, the control water level detection means is provided on the downstream side of the intake gate, and when the water level there is lower than the water level (intake gate opening water level) necessary for obtaining the target water amount, or downstream of the intake gate. When the water level on the side is higher than the water level necessary to obtain the target amount of water (water intake gate closed water level), this condition is detected and a detection signal is sent to the control unit .
And a control part receives the detection signal from a dangerous water level detection means, and while sending the 1st drive signal which fully closes a water intake gate with respect to a drive mechanism, it receives the detection signal from a control water level detection means. The drive mechanism has an effect of transmitting a second drive signal for opening or closing the intake gate by a desired amount.
Furthermore, by adopting a configuration in which the first drive signal is prioritized over the second drive signal, when the water level on the downstream side of the intake gate reaches a critical water level, the intake gate is activated by transmitting the second drive signal. Instead of gradually closing, the intake gate is quickly fully closed by the first drive signal.

The intake gate control system according to claim 2 is the intake gate control system according to claim 1, wherein the intake gate fully closed water level detected by the dangerous water level detecting means is the first intake gate fully closed water level, The second intake gate fully closed water level is lower than the first intake gate fully closed water level, and the control unit detects the first intake fully closed water level without setting a timer. While the drive signal is transmitted immediately, when the second intake gate fully closed water level is detected, a timer is set and the first intake only when the second intake gate fully closed water level is detected for a desired period of time. A drive signal is transmitted.
In addition to the same configuration as that of the first aspect of the present invention, the dangerous water level detection means divides the dangerous water level into two stages (first intake gate fully closed water level and second intake gate fully closed water level). Configured to be monitored.
In the invention according to claim 2, in addition to the same operation as that of the invention according to claim 1, when the control unit receives a detection signal of the first intake gate fully closed water level from the dangerous water level detection means, In the case where the first drive signal is immediately transmitted to the drive mechanism without setting a timer in the control unit, while the second intake gate fully closed water level detection signal is received from the dangerous water level detection means, A timer is set in the control unit, and the first drive signal is transmitted only when the second intake gate fully closed water level continues for a desired time.
Thus, in the invention according to claim 2, when the first intake gate fully closed water level is detected, the intake gate is fully closed quickly, while the second intake gate fully closed water level is detected. In some cases, the intake gate is fully closed only when the water level is continuous.

The intake gate control system according to claim 3 is the intake gate control system according to claim 1 or claim 2, wherein the control unit sets a timer and the intake water gate opening water level is set by the control water level detection means. When the intake gate closed water level is detected, the second drive signal is transmitted only when the intake gate open water level or the intake gate closed water level is detected continuously for a desired time. .
In addition to the same operation as that of the invention described in claim 1 or claim 2, the invention described in claim 3 has a timer set in the control unit, and the intake water gate opening water level or intake gate closing water level is set in the control water level detection means. Only when it is detected continuously for a desired time, the second drive signal is transmitted from the control unit.
In the invention according to claim 3, when the intake gate opening water level or the intake gate closing water level is detected, the intake gate is not immediately opened or closed, but the water level or the intake gate closing water level is not Only when it is persistent, it has the effect of performing the opening or closing operation of the intake gate.

A water intake control unit according to claim 4 is provided in a water intake passage of a hydroelectric power plant and is opened and closed by a drive mechanism, and a drive mechanism that opens and closes the water intake gate based on a drive signal; A dangerous water level detection means provided downstream of the intake gate for detecting the intake gate fully closed water level, and a first drive signal for fully closing the intake gate based on a detection signal transmitted from the dangerous water level detection means A water intake control unit provided in a water intake gate control system having a first control unit for transmitting water, and for automatically controlling the water intake from the water intake channel, the water intake control unit comprising a water intake gate The control water level detecting means for detecting the intake water level of the intake gate and the closed water level of the intake gate, and the detection signal transmitted from the control water level detection means connected to the first control unit. And a second control unit for transmitting a second drive signal for operating the drive mechanism, and the second drive signal is detected by the control water level detecting means at the intake gate opening water level or the intake gate closing water level. Is detected and the intake gate is opened or closed by a desired amount, and the first drive signal has priority over the second drive signal. is there.
The invention according to claim 4 is a water intake amount control unit in which the control water level detection means in the intake gate control system according to claim 1 and the functions of the control unit related thereto are extracted. Therefore, the control water level detection means in the invention described in claim 4 has the same action as the control water level detection means in the invention described in claim 1.
Further, the second control unit in the invention according to claim 4 is connected to the first control unit, receives the detection signal of the intake gate opening water level from the control water level detection means, and requests the intake gate for the drive mechanism. The second drive signal for opening or closing by the amount is transmitted. That is, the second control unit in the invention described in claim 4 is the same as the operation when the control unit in the invention described in claim 1 receives the detection signal from the control water level detection means.

The water intake amount control unit according to claim 5 is the water intake amount control unit according to claim 4, wherein the second control unit sets a timer and the intake water gate opening water level or When the intake gate closed water level is detected, the second drive signal is transmitted only when the intake gate open water level or the intake gate closed water level is detected continuously for a desired time. .
In the fifth aspect of the invention, in addition to the same operation as that of the fourth aspect of the invention, a timer is set in the second control unit, and the intake water gate opening water level or the intake gate closing water level is a desired time in the control water level detection means. Only when it is detected continuously, it has the effect of transmitting the second drive signal from the control unit.
In the invention described in claim 5, when the intake gate opening water level or the intake gate closing water level is detected, the intake gate opening operation level or intake operation is not performed immediately but the intake gate opening operation level or intake operation is not executed. Only when the gate closing water level is continuous, the intake gate is opened or closed.

A water intake amount control unit according to claim 6 is the water intake amount control unit according to claim 4 or claim 5, wherein the second control unit provides a plurality of transmission time data of the second drive signal. A storage unit for storing types is provided integrally or separately.
According to the sixth aspect of the invention, in addition to the same operation as that of the fourth or fifth aspect of the invention, the storage unit is provided integrally with or separately from the second control unit to provide the second drive. It has the effect of storing a plurality of types of signal transmission time data.
The control method of setting the drive time of the drive mechanism when the second drive signal is transmitted as the desired time as the control method of setting the opening or closing amount of the intake gate to a desired amount only. The drive time of the drive mechanism for optimizing the amount of opening or closing of the water intake gate when the second drive signal is transmitted differs for each installation target to install the water intake control unit. Conceivable.
In this case, it is troublesome to set the drive time of the optimum drive mechanism in the second control unit for each installation target to install the water intake amount control unit according to claim 6.
Therefore, in the invention described in claim 6, a storage unit is provided integrally or separately in the second control unit, and transmission time data of a plurality of types of second drive signals are stored in advance in this storage unit. Thus, when setting the optimum drive time of the drive mechanism, the setting work relating to the transmission time of the second drive signal from the second control unit is facilitated.

The intake gate control system according to claim 7 is an intake gate control system for controlling an intake gate provided in an intake passage of a hydroelectric power plant, and is provided in the intake passage of the hydroelectric power plant and is opened and closed by a drive mechanism. An intake gate that is operated, a drive mechanism that opens and closes the intake gate based on a drive signal, a dangerous water level detection means that is provided downstream of the intake gate and detects the fully closed water level of the intake gate, and this dangerous water level detection The intake control according to any one of claims 4 to 6, wherein the first control unit transmits a first drive signal for fully closing the intake gate based on a detection signal transmitted from the means. And a unit.
The invention according to claim 7 includes the intake gate, the drive mechanism, the dangerous water level detection means, and the first control unit, so that when the dangerous water level is detected downstream of the intake gate, the intake gate is automatically set. Has the effect of fully closing. That is, the combination of the intake gate, the drive mechanism, the dangerous water level detection means, and the first control unit corresponds to an intake gate control system that cannot automatically control the existing intake amount.
Moreover, the effect | action of the water intake control unit of any one of Claims 4 thru | or 6 is as above-mentioned.
Accordingly, the invention described in claim 7 is obtained by adding the intake amount control unit described in any one of claims 4 to 6 to an intake gate control system that cannot automatically control an existing intake amount. When the water level on the downstream side of the intake gate reaches the critical water level, the intake gate is fully closed immediately and the opening of the intake gate is automatically controlled so that the water level on the downstream side of the intake gate is within the desired range. It has the action.

According to the first aspect of the present invention, it is possible to detect whether or not the water level taken in from the intake gate in the intake channel is a dangerous water level that may damage the hydroelectric power station. The control water level detection means can monitor whether or not the water level on the downstream side of the intake gate is appropriate while performing by the means. That is, the monitoring of the dangerous water level and the monitoring of the appropriate water level can be performed in parallel. Furthermore, in the invention described in claim 1, since the monitoring result related to the dangerous water level is prioritized over the monitoring result related to the appropriate water level, the safety when the water level suddenly rises on the downstream side of the intake gate is also provided. Can be secured.
In the invention described in claim 1, when the water level on the downstream side of the intake gate is lower than the critical water level and the intake gate is open or closed, the water level on the downstream side of the intake gate is Regardless of the amount of change, it is configured to open or close the intake gate by a desired amount (small amount), so there is a possibility that the opening of the intake gate cannot be optimized by one operation. However, it is possible to perform complicated calculation processing by simply repeating the detection of the water level downstream of the intake gate and opening or closing the intake gate by the desired amount each time as necessary. In addition, the water level downstream of the intake gate can be maintained within a desired range.
As a result, the amount of water allowed for hydroelectric power generation can be efficiently obtained from the water intake gate, and as a result, the power generation efficiency of the hydroelectric power plant can be increased.
In the first aspect of the invention, the operation of the intake gate for maintaining the water level in the desired range on the downstream side of the intake gate is only the repeated opening or closing operation of a desired amount. There is no need for complicated arithmetic processing for control or installation of large-scale equipment. For this reason, since the structure of invention of Claim 1 can be made very simple, the intake gate control system with high cost performance can be provided.

According to the invention described in claim 2, in addition to the same effect as that of the invention described in claim 1, in the case where a temporary low rise of water occurs at the downstream side of the intake gate, the intake water is unnecessarily increased. It is possible to prevent the gate from being fully closed.
That is, in the invention according to the second aspect, it is possible to more carefully determine whether or not the water intake gate is at a water level that should be fully closed.
As a result, since the frequency at which the intake gate is unnecessarily fully closed in the intake channel of the hydroelectric power plant can be reduced, it is possible to suppress a decrease in power generation efficiency when performing hydroelectric power generation.

According to the third aspect of the present invention, it is possible to make a judgment more carefully when the control unit transmits the second drive signal.
According to the invention described in claim 3, in addition to the same effect as that of the invention described in claim 1 or 2, the water intake is performed only when the water level detected by the control water level detection means is continuous. An opening or closing operation of the gate can be performed.
Thereby, when the rise or fall of the water level downstream of the intake gate is transient for a short time, it is possible to prevent the intake gate from being unnecessarily opened or closed. As a result, the water level can be prevented from unnecessarily moving up and down (hunting) on the downstream side of the intake gate, so that the increase or decrease in the amount of water supplied to the hydroelectric power plant can be reduced to increase the power generation efficiency.

The water intake control unit according to claim 4 is added to a water intake gate control system that cannot automatically control an existing water intake, so that the water intake gate control system can automatically control the water intake. Can be converted into a system.
In this case, the existing intake gate control system that cannot automatically control the intake water volume can be used as it is, and it can be used as an intake gate control system that can automatically control the intake water volume without carrying out extensive construction work. it can.
As a result, it is possible to install a water intake gate control system capable of automatically controlling the amount of water intake without investing a great amount of water in a water channel with a small amount of water.

According to the invention described in claim 5, in addition to the same effect as that of the invention described in claim 4, when the water level detected by the control water level detection means is not transient but continuous. Only the intake gate can be opened or closed.
That is, according to the fifth aspect of the invention, it is possible to make a more careful determination when transmitting the second drive signal.
As a result, when the rise or fall of the water level downstream of the intake gate is temporary, the frequency with which the intake gate is opened or closed unnecessarily can be reduced. Thereby, it is possible to prevent unnecessary hunting of the water level on the downstream side of the intake gate. Therefore, when the hydroelectric power generation facility is provided on the downstream side of the intake gate, the increase or decrease in the amount of water supplied thereto is reduced, so that the power generation efficiency can be increased.

  According to invention of Claim 6, while reducing the load of the setting operation | work at the time of attaching the water intake control unit of Claim 6 to the intake gate control system which cannot control the existing water intake automatically, Claim 6 of Claim 6 The versatility of the invention can be enhanced.

According to the seventh aspect of the present invention, it is possible to provide an intake gate control system capable of automatically controlling the intake amount by using an intake gate control system that cannot automatically control the existing intake amount.
As a result, even in intake channels with a small amount of water, it is possible to efficiently acquire a desired amount of water by automatic control without making a large capital investment. It can be carried out.
Therefore, according to the seventh aspect of the invention, it is possible to efficiently use the water in the intake channel with a small flow rate for hydroelectric power generation, so that the location of the hydroelectric power plant can be further facilitated.

It is a system configuration figure of the intake gate control system concerning Example 1 of the present invention. It is a sequence diagram which shows the operation | movement procedure of the intake gate control system which concerns on Example 1 of this invention. It is a system block diagram of the intake gate control system which concerns on the modification of Example 1. FIG. It is a sequence diagram which shows the operation | movement procedure of the intake gate control system which concerns on the modification of Example 1. It is a system configuration | structure figure of the intake gate control system provided with the intake amount control unit which concerns on Example 2 of this invention. It is a sequence diagram which shows the flow of an action | operation of the intake gate control system provided with the intake amount control unit which concerns on Example 2 of this invention. It is a system block diagram of the intake gate control system which concerns on a prior art example.

  A water intake gate control system and a water intake amount control unit according to an embodiment of the present invention will be described in detail with reference to Example 1 and Example 2.

First, a water intake gate control system according to a conventional example will be described with reference to FIG. FIG. 7 is a system configuration diagram of a water intake gate control system according to a conventional example.
The intake gate control system 14 according to the conventional example opens and closes the intake gate 4 provided in the intake passage 2 of the hydroelectric power station to acquire water used for the hydroelectric power generation, and also downstream of the intake passage 2 (paper surface in FIG. 7). When the water level on the left side reaches the critical water level, the critical water level detection means 5 detects the water level and automatically closes the intake gate 4 automatically.
In such a conventional intake gate control system 14, when the dangerous water level A is detected by the dangerous water level detection means 5, a detection signal is transmitted to the first control unit 15, and this detection signal is received. The control unit 15 sends a drive signal for closing the intake gate 4 to the drive mechanism 3 to fully close the intake gate 4. Moreover, in the intake gate control system 14 shown in FIG. 7, the limit switch 10 is provided and it is comprised so that the action | operation of the drive mechanism 3 may be stopped when the intake gate 4 is fully closed.
Moreover, in the intake gate control system 14 according to such a conventional example, since the operation unit 9 is provided in the drive mechanism 3, the intake gate 4 can be opened and closed manually.

When water used for hydropower generation is taken in by the water intake gate control system 14 according to the conventional example as shown in FIG. 7, the operator manually adjusts the opening of the water intake gate 4 using the operation unit 9.
In this case, in order to appropriately maintain the water intake amount from the intake gate control system 14 according to the conventional example, that is, to appropriately maintain the water level on the downstream side of the intake gate 4, personnel are always provided in the vicinity of the operation unit 9. It is desirable to arrange and adjust the opening of the intake gate 4 in real time. However, since it is difficult to always arrange personnel, the opening of the intake gate 4 is kept small and flows into the intake gate 4 by any chance. Even when the amount of water increased, consideration was given so that the amount of water allowed for hydropower generation would not be exceeded.
In this case, it is difficult to improve the power generation efficiency when a hydroelectric power generation facility is provided on the downstream side of the intake gate 4 because it is not possible to take in all the water intake permitted for hydroelectric power generation. .
In addition, the intake channel 2 for small-scale hydroelectric power generation facilities is particularly narrow and it is difficult to secure a space for installing large-scale facilities for automatically controlling the intake gate 4, and from the viewpoint of cost effectiveness, It has been difficult to provide an intake gate control system capable of automatically controlling the amount of intake in the intake channel 2 for small-scale hydropower generation.
Therefore, it has been desired to develop an intake gate control system with high cost performance that can be installed at low cost without requiring large-scale equipment and can automatically control the intake gate in order to adjust the intake amount to a desired amount.

A water intake gate control system according to a first embodiment of the present invention will be described with reference to FIGS. 1 and 2.
FIG. 1 is a system configuration diagram of the intake gate control system according to the first embodiment of the present invention, and FIG. 2 is a sequence diagram showing an operation procedure of the intake gate control system according to the first embodiment of the present invention. The same parts as those described in FIG. 7 are denoted by the same reference numerals, and description of the configuration is omitted.
As shown in FIG. 1, a water intake gate control system 1A according to the first embodiment is provided in a water intake passage 2 of a hydroelectric power plant, and a water intake gate 4 capable of changing a water intake amount by adjusting its opening degree, and a water intake Provided on the downstream side of the gate 4, a dangerous water level detection means 5 for transmitting a detection signal to the control unit 7 when the critical water level A (water intake gate fully closed water level) is reached, and on the downstream side of the water intake gate 4 A control water level detection means 6 for transmitting a detection signal to the control unit 7 when the intake gate closed water level B or the intake gate open water level C is detected; and a detection signal from the dangerous water level detection means 5 The first drive signal for fully closing the intake gate 4 is transmitted to the drive mechanism 3, and the intake gate 4 is opened to the drive mechanism 3 by a desired amount in response to the detection signal from the control water level detection means 6. Second to operate or close A control unit 7 for transmitting a driving signal, and a first, second driving mechanism 3 for actually opening operation or closing operation of intake gate 4 receives a driving signal transmitted from the control unit 7.
In addition, in the intake gate control system 1A according to the first embodiment, the opening amount or the closing amount of the intake gate 4 when the second control signal is transmitted from the control unit 7 is set as a desired amount. The amount is very small like 0.5cm or 1cm in the vertical direction.

Next, a procedure for controlling the intake amount from the intake gate 4 by the intake gate control system 1A as shown in FIG. 1 will be described with reference to FIG.
In addition, when performing automatic control of water intake by the water intake gate control system 1A as shown in FIG. 1, the drive mechanism 3 is manually operated by the operation unit 9, for example, the water level downstream of the water intake gate 4 at the start time. For example, the water level may be adjusted within a desired range, that is, higher than the intake gate opening water level C and lower than the intake gate closing water level B.
As shown in FIG. 2, when the water level on the downstream side of the intake gate 4 is adjusted within a desired range and automatic control is selected in the intake gate control system 1A according to the first embodiment, the danger by the dangerous water level detection means 5 Monitoring of the water level A and monitoring of the appropriate water level by the control water level detection means 6 are performed simultaneously.
Specifically, the dangerous water level detection means 5 monitors whether or not the water level downstream of the intake gate 4 has reached the dangerous water level A (the intake gate fully closed water level) (step S01). When a state where the water level on the downstream side of the intake gate 4 has reached the dangerous water level A (water intake gate fully closed level) is detected, a detection signal is transmitted to the control unit 7 (step S02). On the other hand, if the state that reached the dangerous water level A (water intake gate fully closed water level) is not detected in the previous step S01, the process returns to the start and the automatic control of the water intake gate 4 is continued.

Further, the control water level detection means 6 monitors whether or not the water level downstream of the intake gate 4 has reached the control water level.
Specifically, when the control water level detection means 6 detects that the water level downstream of the intake gate 4 has reached or exceeded the intake gate closed water level (control water level), that is, downstream of the intake gate 4. Is detected (step S03), a detection signal is transmitted to the control unit 7 (step S04).
Further, when it is detected in the control water level detection means 6 that the water level downstream of the intake gate 4 reaches or falls below the intake gate open water level (control water level), that is, the water level downstream of the intake gate 4 is desired. When a state where the lower limit value C of the range is reached or below is detected (step S05), the detection signal is transmitted to the control unit 7 (step S06).
In addition, when the state where the water level on the downstream side of the intake gate 4 has reached the control water level is not detected in the previous steps S03 and S05, the process returns to the start and the automatic control of the intake gate 4 is continued.

Next, when the detection signal from the dangerous water level detection means 5 and the control water level detection means 6 is received in the control unit 7, first, whether the detection signal is a detection of the dangerous water level or the control water level is detected. When the detection signal is based on the detection of the dangerous water level, a first drive signal for fully closing the intake gate 4 is transmitted to the drive mechanism 3. (Step S08).
If the detection signal is based on detection of the control water level in the previous step S07, a second drive signal for closing or opening the intake gate 4 by a desired amount is transmitted to the drive mechanism 3. Is done. This point will be described in more detail. For example, when it is determined in step S07 that the detection signal is based on the detection of the control water level, the detection signal is subsequently a detection signal of the intake gate closing water level. It is determined whether or not there is (step S09), and if it is determined that the detection signal is based on the detection of the intake gate closing water level, a second drive signal for closing the intake gate 4 by a desired amount is driven. It is transmitted to the mechanism 3 (step S10). If not, that is, if it is determined in step S09 that the detection signal is based on the detection of the intake gate opening water level, the intake gate 4 is opened by a desired amount. A second drive signal is transmitted to the drive mechanism 3 (step S11).

When the drive mechanism 3 receives the first drive signal, the intake gate 4 is continuously closed and the automatic control of the intake gate 4 ends when the intake gate 4 is fully closed. Explaining this point in more detail, for example, when the first drive signal is received by the drive mechanism 3, the closing operation of the intake gate 4 is started (step S12), and the limit is set when the intake gate 4 is fully closed. The switch 10 stops the closing operation of the drive mechanism 3 (step S13), and the automatic control of the water intake gate 4 ends.
On the other hand, when the second drive signal for closing or opening the intake gate 4 by a desired amount in the drive mechanism 3 is received, after the intake gate 4 is closed or opened by the desired amount by the drive mechanism 3 ( Step S14 or step S15), returning to the start, the automatic control of the intake gate 4 is continued.

Here, a method of closing or opening the intake gate 4 by a desired amount in Step S14 and Step S15 will be described.
In the intake gate control system 1A according to the first embodiment, when the second drive signal is transmitted, it is transmitted at a time of 1 second. In this case, the amount of opening or closing of the intake gate 4 corresponds to a constant value (including a substantially constant concept) of 0.5 cm. Of course, the transmission time of the second drive signal may be set to 2 seconds, and the opening or closing amount of the intake gate 4 may be set to 1.0 cm.
As a method of closing or opening the intake gate by a desired amount in this way, the transmission time of the second drive signal is determined, and the drive mechanism 3 is operated during the time during which the second drive signal is received. And the merit that the control mechanism of the intake gate control system 1A according to the first embodiment can be simplified by adopting a method in which the gate closing operation and the opening operation are stopped when the transmission time ends, that is, when the time is up. There is.
In addition to this, the second drive signal includes information for closing or opening the drive mechanism 3 for a desired time, and the drive mechanism 3 receives the information to operate the desired mechanism for the desired time. Alternatively, the opening amount may be set to a desired amount.

According to the intake gate control system 1A according to Example 1 as described above, while the water level on the downstream side of the intake gate 4 changes within the desired range, the opening degree of the intake gate 4 is maintained as it is. When the water level on the downstream side of the intake gate 4 exceeds a desired range, that is, when the intake gate closed water level B or the intake gate open water level C is detected on the downstream side of the intake gate 4, the intake gate is mechanically Is closed (step S14) or opened (step S15) by a desired amount. Then, the closing operation (step S14) or the opening operation (step S15) of the intake gate 4 is repeated until the water level on the downstream side of the intake gate 4 falls within the desired range, so that the downstream side of the intake gate 4 is finally obtained. Can be maintained within a desired range.
In addition, the intake gate control system 1A according to the first embodiment includes the dangerous water level detection unit 5 so that the opening degree of the intake gate 4 based on the second drive signal is being adjusted. When the dangerous water level A is detected on the downstream side of the intake gate 4, the first drive signal is transmitted and the intake water is preferentially sent without waiting for the adjustment of the opening degree of the intake gate 4 based on the second drive signal. The gate 4 can be fully closed quickly.
Therefore, according to the intake gate control system 1A according to the first embodiment, when the water level on the downstream side of the intake gate 4 reaches the critical water level while maintaining the intake amount from the intake gate 4 within an appropriate range. Since the intake gate 4 can be fully closed promptly, the safety of the hydroelectric power generation facility installed downstream of the intake gate 4 can also be ensured.

In the case of the intake gate control system 1A according to the first embodiment as described above, there is no need to perform complicated arithmetic processing in order to keep the water level of water taken in from the intake gate 4 within a desired range. In addition, there is no need to provide a large facility for accurately adjusting the opening of the intake gate 4.
In other words, the intake gate control system 14 according to the conventional example as shown in FIG. 7 is simply added with a part of the functions of the control water level detection means 6 and the control unit 15. Thus, it is possible to provide a water intake gate control system 1A that can automatically control the amount of water intake from 4.
That is, in the intake gate control system 1A according to the first embodiment, the mechanism for automatically controlling the intake amount from the intake gate 4 is very simple, so the cost for installation is very low. Therefore, according to the intake gate control system 1A according to the first embodiment, an intake gate control system with high cost performance can be provided.
In the intake gate control system 1A according to the first embodiment, the drive mechanism 3 is operated for a predetermined time in the above-described steps S14 and S14 so that the intake gate 4 can be closed or opened by a predetermined desired amount. Although configured, the means for closing or opening the intake gate 4 by a desired amount is not necessarily limited to the above-described means. For example, by providing a sensor for detecting the amount of closing or opening of the intake gate 4 to provide a configuration that automatically stops the operation when the intake gate 4 is closed or opened by a desired amount, The intake gate 4 may be closed or opened by a desired amount.

If the intake gate 4 is controlled in accordance with the procedure shown in FIG. 2, the intake gate 4 is fully closed immediately when the dangerous water level detection means 5 detects the dangerous water level A (intake gate fully closed level).
However, just because the water level on the downstream side of the intake gate 4 for a very short time has reached the critical water level A, there is no immediate problem with the hydroelectric power generation facility on the further downstream side. If this continues, the actual situation is that the risk of malfunctions in hydroelectric power generation facilities increases.
Accordingly, in practice, when the dangerous water level A is detected by the dangerous water level detection means 5, it is less necessary to immediately close the intake gate 4. However, if the dangerous water level A continues, the intake gate 4 is still opened. It can be said that it must be fully closed.

Here, a modified example of the intake gate control system according to the first embodiment will be described with reference to FIGS.
FIG. 3 is a system configuration diagram of a water intake gate control system according to a modification of the first embodiment, and FIG. 4 is a sequence diagram showing an operation procedure thereof. In addition, the same code | symbol is attached | subjected about the same part as what was described in FIG.1, 2,7, and the description about the structure is abbreviate | omitted.
In view of the circumstances as described above, in the intake gate control system 1B according to the modification of the first embodiment, as shown in FIG. 3, the dangerous water level A in the intake gate control system according to the first embodiment is immediately closed. The water level A ₁ and the intake gate fully closed water level A ₂ are set in two stages. In addition to monitoring the control water level, the intake gate immediately closed water level A ₁ and the intake gate fully closed water level A ₂ that are dangerous water levels are set. It is configured to perform monitoring in parallel.
More specifically, the intake gate control system 1B according to a modification of, when the water intake gate immediately all閉水position A ₁ in dangerous water level detection unit 5 is detected first embodiment, the drive mechanism 3 from the controller 7 first drive signal while being immediately originating, when the dangerous water level detecting means 5 intake gate full閉水position a ₂ is detected, set the timer in the control unit 7 with respect to the continuation desired time is intake gate full閉水position a ₂ constitutes so fully closed only by transmitting the first drive signal to the drive mechanism 3 from the controller 7 the water intake gate 4 when it is detected.

The above changes will be described in detail with reference to FIG. In addition, only the change with respect to the sequence diagram of the intake gate control system 1A which concerns on Example 1 shown in previous FIG. 2 here is demonstrated.
As shown in FIG. 4, in the intake gate control system 1 </ b> B according to the modification of the first embodiment, when automatic control of the intake gate 4 is selected, the intake water gate immediately closed water level A <b> ₁ When detected (step S20), the detection signal is transmitted to the control unit 7 (step S02).
Further, when the intake water gate fully closed water level A ₂ is detected by the dangerous water level detection means 5 (step S01), a timer is set in the control unit 7, and the state where the intake water gate fully closed water level A ₂ is reached or exceeded is determined. Only when the desired time (for example, 1 minute or 3 minutes) is continued, the detection signal is transmitted to the control unit 7 (step S02).
Note that the previous step S20, in step S01, intake gate immediately all閉水position A _1, if the water intake gate full閉水position A ₂ is not detected, the automatic control of the water intake gate 4 is continued back to the start.

According to the water intake gate control system 1B according to a modification of the first embodiment as described above, the risk level A in the water intake gate control system 1A of Example 1, a water intake gate immediately all閉水position A _1, intake gate fully closed by setting in two stages of the water level a _2, can determine whether to closing the water intake gate 4 total more carefully.
In this case, although the water level on the downstream side of the intake gate 4 has reached the dangerous water level, the frequency at which the intake gate 4 is unnecessarily fully closed can be reduced when the water level is not sustainable and the danger level is low. As a result, the frequency of stopping the supply of water to the hydroelectric power generation facility is reduced, so that the power generation efficiency in the hydroelectric power generation facility can be improved.

Further, in the intake gate control system 1A according to the first embodiment as shown in FIG. 2, although the water level downstream of the intake gate 4 has reached the control water level (intake gate closed water level or intake gate open water level). Even when the intake gate 4 is not required to be immediately controlled, the closing operation or the opening operation of the intake gate 4 is executed.
In this case, hunting in which the water level on the downstream side of the intake gate 4 moves up and down unnecessarily occurs, and the power generation efficiency at the time of hydroelectric power generation is not preferable. In view of such circumstances, the following improvements may be added to the intake gate control system 1A according to the first embodiment.
That is, as shown in FIG. 4, in step S03 and step S05, a state in which the intake gate closed water level B (the upper limit value of the desired range water level) or the intake gate open water level C (the lower limit value of the desired range water level) has been detected. When the control unit 7 sets a timer and the state continues for a desired time (for example, 1 minute or 3 minutes) (step S031, step S051), a detection signal is sent to the control unit 7. You may comprise so that it may transmit (step S04, step S06).
In this case, the frequency at which the intake gate 4 is unnecessarily closed or opened when the water level downstream of the intake gate 4 rises or falls without the need to control the intake gate 4 for a very short time. Can be reduced. In this case, hunting of the water level taken in from the intake channel 2 can be suppressed. Therefore, the power generation efficiency in the hydroelectric power generation facility can be improved.

In the intake gate control system 1A according to the first embodiment and the intake gate control system 1B according to the modification of the first embodiment, a float switch may be used as the dangerous water level detection means 5 and the control water level detection means 6. .
In this case, as shown in FIGS. 1 and 3, by accommodating the float switch which is the dangerous water level detection means 5 or the control water level detection means 6 in the breakwater tube 8, the influence of waves or the like generated in the intake channel 2 can be prevented. The water level downstream of the intake gate 4 can be monitored while being reduced.
Further, since the float switch is small and compact, the space required for installing the dangerous water level detection means 5 and the control water level detection means 6 in the intake channel 2 can be reduced.
As a result, it is possible to easily install the intake gate control system 1A according to the first embodiment and the intake gate control system 1B according to the modification of the first embodiment to the narrow intake passage 2 for small-scale hydropower generation. .
In this case, since the amount of water permitted to be used can be obtained from the narrow intake channel 2 for small-scale hydropower generation, the power generation efficiency of the power generation facility can be improved.
1 and 3, the case where the dangerous water level detection means 5 and the control water level detection means 6 are separately provided is described as an example. However, the dangerous water level detection means 5 and the control water level detection means 6 also serve as 1. One water level detection means may be used.
In particular, when a float switch is used as the dangerous water level detection means 5 or the control water level detection means 6, the dangerous water level detection means 5 and the control water level detection means 6 may be arranged and used in series. In this case, the space required for installing the dangerous water level detection means 5 and the control water level detection means 6 can be further reduced.

A water intake amount control unit according to Embodiment 2 of the present invention will be described with reference to FIGS. FIG. 5 is a system configuration diagram of a water intake gate control system including a water intake amount control unit according to the second embodiment of the present invention. The same parts as those described in FIGS. 1 to 4 and 7 are denoted by the same reference numerals, and description of the configuration is omitted.
As described above, the difference between the intake gate control system 14 according to the conventional example as shown in FIG. 7 and the intake gate control system 1A according to the first embodiment is that the control water level detection means 6 and the control water level Only a part of the control function of the control unit 7 relating to the transmission of the second drive signal transmitted to the drive mechanism 3 based on the detection signal from the detection means 6 is shown.
This means that the amount of water taken from the water intake gate 4 can be reduced by only adding a part of the functions of the control water level detection means 6 and the control unit 7 to the water intake gate control system 14 according to the conventional example as shown in FIG. This means that the intake gate control system 14 that cannot be automatically controlled can be easily changed to the intake gate control system 1A that can automatically control the intake amount.
And it is necessary to change the intake gate control system that cannot automatically control the intake amount according to the conventional example into an intake gate control system that can automatically control the intake amount with only minor construction while using the equipment as it is after installation. The water intake amount control unit 100 according to the second embodiment is obtained by extracting the constituent elements and capturing it as an independent invention.

As shown in FIG. 5, the intake amount control unit 100 according to the second embodiment is added to the existing intake gate control system 14 that cannot automatically control the intake gate 4, and the intake gate control system 14 is removed from the intake channel. This is a retrofit unit for automatically controlling the intake amount of water, and its configuration is roughly installed downstream of the intake gate 4 and detects the intake gate closed water level B and intake gate open water level C. The control water level detection means 6 is connected to the control section 15 (first control section) of the existing intake gate control system 14 and receives a detection signal from the control water level detection means 6 to generate a second drive signal. 2 control units 12.
The intake gate control system 14 that cannot automatically control the intake gate 4 includes, for example, the intake gate 4 that is provided in the intake passage 2 of the hydroelectric power plant and that is opened and closed by the drive mechanism 3, and the intake gate based on the drive signal. Drive mechanism 3 that opens and closes 4, dangerous water level detection means 5 that is provided downstream of the water gate 4 and detects the water intake gate fully closed water level (dangerous water level A), and detection transmitted from the dangerous water level detection means 5 It consists of the control part 15 (1st control part) which transmits the 1st drive signal which fully closes the intake gate 4 based on a signal. Of course, the dangerous water level detection means 5 in the intake gate control system 14 has the dangerous water level in two stages of the intake gate immediately closed water level A ₁ and the intake gate fully closed water level A ₂ as shown in FIG. It may be set separately.
Further, a water intake gate control system 1C according to the second embodiment is obtained by adding a water intake amount control unit 100 according to the second embodiment to an existing water intake gate control system 14 that cannot automatically control the water intake gate 4.

Since the water intake amount control unit 100 according to the second embodiment as described above and the control water level detection means 6 in the intake gate control system 1C are the same as the control water level detection means 6 in the intake gate control system 1A according to the first embodiment, The action and effect are the same.
In addition, the water intake control unit 100 according to the second embodiment and the second control unit 12 of the intake gate control system 1C are supplied from the control water level detection means 6 in the control unit 7 of the intake gate control system 1A according to the first embodiment. It has a function corresponding to the function of receiving the detection signal and transmitting the second drive signal. That is, when the second control unit 12 of the water intake amount control unit 100 according to the second embodiment and the control unit 15 (first control unit) of the existing water intake gate control system 14 are combined, the water intake according to the first embodiment is combined. It becomes the control part 7 of the gate control system 1A.

Here, a procedure for automatically controlling the water intake amount from the water intake gate 4 by the water intake gate control system 1C according to the second embodiment will be described with reference to FIG. FIG. 6 is a sequence diagram showing an operation flow of the intake gate control system including the intake amount control unit according to the second embodiment of the present invention. The same parts as those described in FIGS. 1 to 5 and 7 are denoted by the same reference numerals, and description of the configuration is omitted.
Moreover, since the function of the intake gate control system 1C according to the second embodiment is substantially the same as that of the intake gate control system 1A according to the first embodiment, here, it is different from the sequence diagram shown in FIG. Only explained.
As shown in FIG. 6, the detection signal transmitted from the dangerous water level detection means 5 in step S02 is received by the control unit 15 and transmitted to the second control unit 12 (step S30). Further, the detection signal transmitted from the control water level detection means 6 is directly transmitted to the second control unit 12.
This is because the existing intake gate control system 14 does not have a reception facility for the detection signal transmitted from the control water level detection means 6, and naturally the detection signal from the dangerous water level detection means 5 and the control water level detection are detected. This is because there is no means for determining the detection signal from the means 6.
For this reason, in the intake gate control system 1C according to the second embodiment, the second control unit 12 is retrofitted with the determination relating to the transmission of the first drive signal and the second drive signal and the transmission of the second drive signal. On the other hand, from the viewpoint of effectively utilizing the existing control unit 15, the first drive signal is directly transmitted by the control unit 15 of the existing intake gate control system 14.

Returning to the description of FIG. 6 again, when the detection signal transmitted from the control unit 15 and the detection signal from the control water level detection means 6 are received by the second control unit 12, first, the detection signal is converted into the dangerous water level. Is detected or whether the braking water level is detected (step S07), and when the detection signal is based on the detection of the dangerous water level, the control unit 15 applies to the drive mechanism 3. A first drive signal for fully closing the intake gate 4 is transmitted (step S08).
If it is determined in the previous step S07 that the detection signal is based on the detection of the control water level, it is subsequently determined whether or not the detection signal is a detection signal for the water intake gate closing water level. When it is determined (step S09) that the detection signal is based on the detection of the intake gate closing water level, the second control unit 12 causes the drive mechanism 3 to close the intake gate 4 by a desired amount. A second drive signal is transmitted (step S10).
Further, when it is determined in step S09 that the detection signal is based on detection of the intake gate opening water level, the second control unit 12 causes the drive mechanism 3 to open the intake gate 4 by a desired amount. 2 is transmitted (step S11).
As described above, in the intake gate control system 1C according to the first embodiment, the determination of the detection signal and the transmission of the second drive signal from the dangerous water level detection means 5 and the control water level detection means 6 are performed in the second control unit 12. On the other hand, the transmission of the first drive signal is performed by the existing control unit 15.
In addition, it is possible to employ | adopt the method similar to Example 1 about the method of closing or opening the intake gate 4 only by desired amount.

Therefore, the intake gate control system 1A according to the first embodiment can be obtained simply by attaching the intake amount control unit 100 according to the second embodiment to the existing intake gate control system 14 that cannot automatically control the intake amount taken in from the intake gate 4. It is possible to provide a water intake gate control system having a function equivalent to the above.
In this case, since it is very easy to attach the water intake amount control unit 100 according to the second embodiment to the existing water intake gate control system 14, the existing water intake gate control system 14 is used as it is, and the previous embodiment 1 is used. The cost for changing to a water intake gate control system having a function equivalent to that of the water intake gate control system 1A can be made extremely low.
That is, according to the water intake amount control unit 100 according to the second embodiment, when the water level on the downstream side of the water intake gate 4 reaches the dangerous water level A (water intake gate fully closed level), the water intake gate 4 can be fully closed automatically. A function of maintaining the water level on the downstream side of the intake gate 4 within a desired range can be added to the existing intake gate control system 14 later.

The intake gate control system 1C according to the second embodiment, which includes the existing intake gate control system 14 and the intake amount control unit 100 according to the second embodiment, has a detection signal from the dangerous water level detection means 5 as the second control. Although the point transmitted to the unit 12 is different from the intake gate control system 1A according to the first embodiment, as described above, the control unit 15 of the intake gate control system 1C according to the second embodiment (first The combination of the second control unit 12 and the second control unit 12 has the same function as the control unit 7 of the intake gate control system 1A according to the first embodiment, and therefore the intake gate control system 1C according to the second embodiment. The actions and effects of are substantially the same as the actions and effects of the intake gate control system 1A according to the first embodiment.
In addition, according to the intake gate control system 1C according to the second embodiment, the intake gate control that can automatically control the intake amount of the intake gate 4 by using the existing intake gate control system 14 as it is and with only a small capital investment. It has the merit that a system can be provided.
Further, according to the intake gate control system 1C according to the second embodiment, the intake gate control system 14 that cannot automatically control the existing intake amount can be diverted as an intake gate control system that can automatically control the intake amount. Can be used for hydropower generation with a small capital investment, and the power generation efficiency at that time can be increased. As a result, hydroelectric power generation can be further spread.

In addition, you may use a float switch as the control water level detection means 6 in the intake amount control unit 100 and the intake gate control system 1C which concern on Example 2. FIG. In this case, the space required for the installation of the control water level detection means 6 can be significantly reduced, so that the water intake amount control unit 100 and the water intake gate control system 1C according to the second embodiment can be made more compact.
Although not particularly shown, as a modification of the intake gate control system 1C according to the second embodiment, the control unit 15 according to the existing intake gate control system 14 is completely removed, and the intake gate control system 1A according to the first embodiment is removed. The control unit 7 may be installed and a detection signal from the dangerous water level detection unit 5 and the control water level detection unit 6 may be transmitted to the control unit 7.
In this case, the action and effect obtained by combining the action and effect of the intake gate control system 1A according to the first embodiment and the action and effect of the intake gate control system 1C according to the second embodiment are exhibited.

The second control unit when the intake gate closed water level B or the intake gate open water level C is detected by the control water level detection means 6 in the intake water amount control unit 100 and the intake gate control system 1C according to the second embodiment. You may comprise the procedure at the time of transmitting a 2nd drive signal from 12 similarly to the case of the intake gate control system 1B (refer previous FIG. 4) which concerns on the modification of previous Example 1. FIG. More specifically, when the intake water gate closing water level B or the intake water gate opening water level C is detected by the control water level detection means 6, the second control unit 12 sets a timer, and the intake water gate closing water level B or You may comprise so that a 2nd drive signal may be transmitted with respect to the drive mechanism 3 from the control part 15 only when the intake gate opening water level C continues for desired time.
In this case, since the judgment when transmitting the second drive signal can be made more carefully, the frequency at which the intake gate 4 is unnecessarily opened or closed can be reduced. As a result, the occurrence of water level hunting downstream of the intake gate 4 can be suppressed, and the power generation efficiency of the hydroelectric power plant can be improved.

Further, as a unique problem when the water intake control unit 100 according to the second embodiment is attached to the existing water intake gate control system 14, a second is obtained according to the scale of the water intake gate 4 of the water intake gate control system 14 to be installed. There is a point that the desired amount which is the amount of opening or closing of the intake gate 4 when the driving signal is transmitted is different.
In this case, it is necessary to change the transmission time of the second drive signal transmitted from the control unit 15 for each intake gate control system 14 to be installed so that the amount of opening or closing of the intake gate 4 is appropriate. However, this operation is complicated and the water intake control unit 100 is made to order each time, and it is difficult to improve the production efficiency of the water intake control unit 100.

In view of such circumstances, the storage unit 13 that stores a plurality of types of transmission time data of the second drive signal in advance in the second control unit 12 of the water intake amount control unit 100 according to the second embodiment is integrated or Prepared separately and configured so that the transmission time of the second drive signal can be freely changed according to the scale of the intake gate control system 14 to be installed, so that the amount of opening or closing of the intake gate 4 can be changed. It may be freely adjustable.
By providing the storage unit 13 as described above, the intake amount control unit 100 according to the second embodiment can easily change the opening amount or the closing amount of the intake gate 4 when the second drive signal is transmitted. As a result, the versatility of the water intake amount control unit 100 according to the second embodiment can be enhanced.
That is, even when the scale of the intake gate control system 14 to be attached is different, only one type of intake amount control unit 100 according to the second embodiment can be used.
A setting unit may be provided instead of the storage unit 13. The setting unit can set the transmission time of the second drive signal as desired. It is good to set according to the scale of the intake gate control system 14 without storing in advance. Thereby, the same operation and effect as the storage unit 13 are exhibited.

  As described above, the present invention provides a water intake gate control system that controls a water intake gate provided in a water intake passage of a hydroelectric power plant, and a water intake amount in the water intake gate provided in the water intake passage of a hydroelectric power plant. It can be used not only in the field of hydroelectric power generation but also in the fields of agriculture and civil engineering.

  DESCRIPTION OF SYMBOLS 1A-1C ... Intake gate control system 2 ... Intake channel 3 ... Drive mechanism 4 ... Intake gate 5 ... Danger water level detection means (float switch) 6 ... Control water level detection means (float switch) 7 ... Control part 8 ... Wavebreaker 9 Operation unit 10 Limit switch 11 First control unit 12 Second control unit 13 Storage unit 14 Water intake gate control system 15 Control unit 100 Water intake control unit

Claims (7)

An intake gate control system for controlling an intake gate provided in an intake channel of a hydroelectric power plant,
A drive mechanism for opening and closing the intake gate based on a drive signal;
A dangerous water level detecting means provided on the downstream side of the intake gate for detecting the fully closed water level of the intake gate;
Control water level detection means provided on the downstream side of the intake gate for detecting the intake gate open water level and the intake gate closed water level;
A control unit for transmitting a drive signal for operating the drive mechanism based on a detection signal transmitted from the control water level detection unit and the dangerous water level detection unit;
The control unit transmits a first drive signal for fully closing the intake gate when the intake water gate fully closed water level is detected by the dangerous water level detecting means, and the intake water gate is controlled by the control water level detecting means. A second drive signal for opening or closing the intake gate by a desired amount when an open water level or a water intake gate closed water level is detected;
The intake gate control system, wherein the first drive signal is prioritized over the second drive signal. The intake gate fully closed water level detected by the dangerous water level detection means is a first intake gate fully closed water level and a second intake gate fully closed water level lower than the first intake gate fully closed water level,
When the control unit detects the first intake water fully closed level, the controller immediately transmits the first drive signal without setting a timer, while detecting the second intake gate fully closed water level. 2. The intake gate according to claim 1, wherein a timer is set to transmit the first drive signal only when the second intake gate fully closed water level is detected continuously for a desired time. Control system.   The control unit sets a timer and detects the intake gate opening water level or the intake gate closing water level by the control water level detecting means, and continuously continues the desired intake gate opening water level or intake gate closing time when the intake gate opening water level or intake gate closing water level is detected. The intake gate control system according to claim 1 or 2, wherein the second drive signal is transmitted only when a water level is detected. An intake gate provided in the intake channel of the hydroelectric power plant and opened / closed by the drive mechanism, the drive mechanism for opening / closing the intake gate based on a drive signal, and provided downstream of the intake gate, A dangerous water level detecting means for detecting the fully closed water level of the gate, and a first controller for transmitting a first drive signal for fully closing the intake gate based on a detection signal transmitted from the dangerous water level detecting means. A water intake control unit provided in a water intake gate control system, for automatically controlling the water intake from the water intake channel,
The intake amount control unit is provided on the downstream side of the intake gate, and includes a control water level detection means for detecting the intake gate opening water level and the intake gate closing water level,
A second control unit connected to the first control unit and transmitting a second drive signal for operating the drive mechanism based on a detection signal transmitted from the control water level detection means;
The second drive signal is transmitted when the control water level detecting means detects an intake gate opening water level or an intake gate closing water level, and opens or closes the intake gate by a desired amount. Yes,
The water intake control unit is characterized in that the first drive signal is prioritized over the second drive signal.   When the second control unit sets a timer and detects the intake gate opening water level or the intake gate closing water level by the control water level detection means, the intake gate opening water level or intake water is continuously continued for a desired time. The water intake amount control unit according to claim 4, wherein the second drive signal is transmitted only when a gate closed water level is detected.   The amount of water intake according to claim 4 or 5, wherein the second control unit includes a storage unit that stores a plurality of types of transmission time data of the second drive signal, either integrally or separately. Controller unit. An intake gate control system for controlling an intake gate provided in an intake channel of a hydroelectric power plant,
An intake gate provided in the intake channel of the hydroelectric power plant and opened and closed by a drive mechanism;
The drive mechanism for opening and closing the intake gate based on a drive signal;
A dangerous water level detecting means provided on the downstream side of the intake gate for detecting the fully closed water level of the intake gate;
A first control unit for transmitting a first drive signal for fully closing the intake gate based on a detection signal transmitted from the dangerous water level detection means;
A water intake gate control system comprising the water intake amount control unit according to any one of claims 4 to 6.

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