JP2010236190A - Controller for submerged pump, manhole pump device, and operation method for the manhole pump device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a controller for a submerged pump, capable of adjusting the average flow rate of water to be fed under pressure by the submerged pump simply. <P>SOLUTION: This controller for the submerged pump includes a water storage tank for storing the water flowing into it through a flow-in pipe, the submerged pump for feeding the water stored in the water storage tank into a flow-out pipe under pressure, and a control unit provided in the submerged pump device having a water level sensor for measuring a level of the water stored in the water storage tank, starting the submerged pump when the level of the water measured with the water level sensor reaches the predetermined level of water for starting the pump, and the stopping operation of the submerged pump when the level of the water reaches the level of water for stopping pump being lower than the level of water for starting the pump. The control unit operates the submerged pump intermittently until the level of water reaches the level of water for stopping pump after starting the submerged pump to adjust average flow rate of water to be fed under pressure per unit time. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a control device for a submersible pump device, a manhole pump device, and a method for operating the manhole pump device.

  A sewage transport facility of a natural flow type that transports sewage to a sewage treatment plant includes a plurality of manhole pump devices constructed at predetermined intervals and a plurality of sewage transport pipes connecting the manhole pump devices.

  The sewage transport pipe is buried in the ground at a downward slope from the upstream manhole pump apparatus toward the downstream manhole pump apparatus, and the sewage flowing into the manhole pump apparatus from the upstream sewage transport pipe is downstream of the sewage transport pipe To be pumped up.

  As shown in FIG. 13, the manhole pump device 90 includes a manhole 92 that stores domestic wastewater, industrial wastewater, and sewage such as rainwater flowing in from the sewage inflow pipe 91a, and sewage stored in the manhole 92 as sewage outflow pipe 91b. A plurality of (usually two) submersible pumps 93a, 93b, a water level sensor 94 for measuring the water level stored in the manhole 92, and a controller 95 for controlling the submersible pumps 93a, 93b. .

  The control device 95 starts one of the submersible pumps 93a and 93b when the water level measured by the water level sensor 94 reaches a predetermined pump activation water level HWL, and stops when the water level reaches a predetermined pump stop water level LWL. Each time the sewage is pumped from the pump start water level HWL to the pump stop water level LWL, the submersible pumps 93a and 93b are alternately operated. When the abnormal water level HHWL higher than the pump start water level HWL is reached, two units are operated simultaneously.

  As shown in FIG. 14, sewage flows into the manhole pump device 90 from one or a plurality of sewage transport pipes 91. A plurality of branch pipes are connected to the sewage transport pipe 91 so that sewage, rainwater, etc. from a nearby residence, factory, or the like flows in. In the figure, sewage flows into the manhole pump device 90a not only from the sewage water sent from the plurality of upstream manhole pump devices 90b and 90d but also from the neighboring dwellings 96a, 96b, and 96c.

  In Patent Document 1, in order to avoid the generation of a strange odor due to septic water being stored in a manhole for a long time, an intermediate water level is set between the pump start water level HWL and the pump stop water level LWL, and the time during which the pump is stopped Has proposed a water level control device that operates a pump when sewage reaches an intermediate water level when the set time exceeds the set time.

JP-A 63-220308

  Usually, such a sewage transfer facility is designed so that the water storage capacity of the downstream manhole pump device and the amount of water supplied by the submersible pump are larger than those of the upstream manhole pump device in the planning stage.

  However, due to various factors such as changes in the city plan and replacement of submersible pumps, the amount of submersible pumps installed in the upstream manhole pump unit is higher than the submerged pump installed in the downstream manhole pump unit. May increase.

  In such a case, if more sewage flows from the upstream manhole pump device than the amount of water pumped by the submersible pump of the downstream manhole pump device, the water level of the downstream manhole pump device becomes an abnormally high water level. There is a risk of overflow.

  When the manhole is at an abnormally high water level, the control device of the manhole pump device notifies the terminal device installed in the management office via the communication line or the terminal device carried by the administrator. Recognized managers have to perform time-consuming work such as stopping the pump of the upstream manhole pump device in order to avoid water overflow from the downstream manhole pump device.

  The objective of this invention is providing the control apparatus which adjusts simply the average pumping flow volume of submersible pumps, such as a manhole pump. Even if the amount of water supplied by the submersible pump installed in the upstream manhole pump device is larger than the amount of water supplied by the submersible pump installed in the downstream manhole pump device, the downstream manhole pump device overflows. It is in the point which provides the control apparatus and operating method of a manhole pump apparatus which can send water appropriately, without doing.

  In order to achieve the above-mentioned object, the first characteristic configuration of the control device of the submersible pump device according to the present invention is the water storage for storing the water flowing in from the inflow pipe as described in claim 1 of the claims. Installed in a submersible pump device equipped with a tank, a submersible pump that pumps the water stored in the reservoir to the outflow pipe, and a water level sensor that measures the water level stored in the reservoir, and measured by the water level sensor A control device for a submersible pump device comprising a controller that starts a submersible pump when the water level reaches a predetermined pump start water level and stops the submersible pump when a pump stop water level lower than the pump start water level is reached. The point is that the average pumping flow rate per unit time is adjusted by intermittently operating the submersible pump until the water level reaches the pump stop water level after the submersible pump is started.

  According to the above configuration, the control unit adjusts the average pumping flow rate per unit time by intermittently operating the submersible pump until the water level reaches the pump stop water level after starting the submersible pump. On the other hand, it can be easily controlled to an appropriate average pumping flow rate per unit time. For example, in the case of a manhole pump device, even if the submersible pump installed in the downstream manhole pump device is insufficient in water supply, or the submersible pump water supply is less than the downstream manhole. Even if it is excessively large, it is possible to prevent the occurrence of overflow in the downstream manhole pump device by adjusting the average pumping flow rate per unit time to be small.

  In the second feature configuration, in addition to the first feature configuration described above, an intermediate stop water level is set between the pump start water level and the pump stop water level. When the water level reaches the intermediate stop water level after reaching the predetermined pump start water level and starting the submersible pump, it is restarted after stopping for a predetermined time.

  According to the above configuration, the submersible pump is started by the control unit, and when the water level reaches the intermediate stop water level from the pump start water level to the pump stop water level, the submersible pump is stopped for a predetermined time. In the case of a pump device, even if the water supply amount of the submersible pump of the downstream manhole pump is insufficient, or the water supply amount of the submersible pump is excessive with respect to the downstream manhole. Even so, the sewage that has been sent so far can be sent further downstream so as not to cause overflow. In addition, even when the water flow from the other upstream manhole pump is simultaneously sent to the downstream manhole pump, even if the amount of inflow water temporarily increases, the water has been sent until then. Sewage can be sent further downstream so as not to cause overflow.

  In the third feature configuration, as described in claim 3, in addition to the second feature configuration described above, a plurality of intermediate stop water levels having different water levels are set between the pump start water level and the pump stop water level, The control unit lies in that after the water level reaches a predetermined pump start water level and the submersible pump is started, each time the water level reaches each intermediate stop water level, the control unit restarts after stopping for a predetermined time.

  According to the above-described configuration, the submersible pump is stopped for a predetermined time each time the water level reaches each intermediate stop water level. For example, in the case of a manhole pump device, the submersible pump is downstream during intermittent driving. The amount of sewage flowing into the manhole on the side can be reduced, so that the sewage that has been sent so far can be sent further downstream, and the possibility of overflowing can be further reduced.

  In the fourth feature configuration, as described in claim 4, in addition to any one of the first to third feature configurations described above, the water tank is a manhole, and a time for setting an intermittent operation time zone A control device for a submersible pump device comprising a belt setting unit, wherein the control unit intermittently operates the submersible pump in the intermittent operation time zone set by the time zone setting unit, and continuously operates the submersible pump in a time zone other than the intermittent operation time zone It is in the point which is a manhole pump apparatus provided with.

  According to the above configuration, the average pumping flow rate per unit time can be adjusted in the intermittent operation time zone set by the time zone setting unit. For example, by setting the time zone for intermittent operation according to the amount of inflow by time zone, such as setting the morning or evening time zone with a lot of domestic wastewater as the intermittent operation time zone, The average pumping flow rate per unit time is adjusted so as not to cause the occurrence of overflow in the time zone when the amount of sewage flowing into the manhole increases.

  In the fifth feature configuration, as described in claim 5, in addition to the second or third feature configuration described above, the water storage tank is a manhole, and a downstream side where sewage is pumped by a submersible pump. A communication unit that acquires the water level of the manhole pump device is provided, and the control unit stops the submersible pump at the intermediate stop water level or the intermediate stop water level based on the water level or water level fluctuation of the downstream manhole pump device acquired by the communication unit. It is the manhole pump device provided with the control device of the submersible pump device that sets the stop time.

  According to the above configuration, the water supply capacity of the downstream manhole device or the amount of inflow of sewage can be grasped from the water level or water level fluctuation of the downstream manhole pump device acquired by the communication unit. Therefore, the control unit sets a stop time for stopping the submersible pump at the intermediate stop water level or the intermediate stop water level based on such water level or water level fluctuation so as not to overload the manhole device on the downstream side. The average pumping flow rate per unit time can be adjusted. For example, even when the water level fluctuates rapidly, such as when rainwater flows in due to sudden rain, an appropriate stop time for stopping the submersible pump at the intermediate stop water level or the intermediate stop water level is set accordingly. By doing so, it becomes possible to control so as not to cause overflow.

  In the seventh feature configuration, as described in claim 7, in addition to the first feature configuration described above, the water storage tank is a manhole, and an intermediate stop water level is provided between the pump start water level and the pump stop water level. Set, and equipped with a communication unit that acquires the water level of the downstream manhole to which water is pumped by the submersible pump, the control unit, when the water level of the downstream manhole acquired by the communication unit is greater than or equal to the first threshold, When the water level reaches the intermediate stop water level after starting the submersible pump, the submersible pump is stopped, and when the water level in the downstream manhole falls below a second threshold value lower than the first threshold value, the submersible pump is restarted. It is a manhole pump device provided with a control device for the submersible pump device to be activated.

  According to the above-described configuration, the control unit drives the submersible pump to supply water until the water level reaches the intermediate stop water level. Therefore, it is possible to avoid the possibility that overflow occurs in the upstream manhole pump device.

  In addition, when the water level of the downstream manhole pump device exceeds the first threshold, the control unit may cause overflow of the downstream manhole pump device due to the water supply. After completing the water supply until the intermediate stop water level is reached, until the water level of the downstream manhole pump device falls below the second threshold and it can be determined that there is no risk of overflow in the downstream manhole pump device You will be able to stop the water supply.

  The first characteristic configuration of the operation method of the manhole pump device according to the present invention is the manhole storing water flowing in from the inflow pipe and the water stored in the manhole being pumped to the outflow pipe as described in claim 8. It is installed in a manhole pump device equipped with a submersible pump and a water level sensor that measures the level of water stored in the manhole. When the water level measured by the water level sensor reaches a predetermined pump activation water level, the submersible pump is activated and the pump An operation method of a manhole pump device that stops the submersible pump when the pump stop water level lower than the start water level is reached, and the average pumping flow rate per unit time until the water level reaches the pump stop water level after starting the submersible pump The point is that the submersible pump is operated intermittently to adjust the pressure.

  In the second feature configuration, in addition to the first feature configuration described above, an intermediate stop water level is set between the pump start water level and the pump stop water level, and the water level is a predetermined pump. After reaching the starting water level and starting the submersible pump, when the water level reaches the intermediate stop water level, it is restarted after stopping for a predetermined time.

  As described in claim 10, the third characteristic configuration is based on the water level of a downstream manhole pump device to which sewage is pumped by a submersible pump in addition to the first or second characteristic configuration described above. The stop time for stopping the submersible pump at the intermediate stop water level or the intermediate stop water level is set, and intermittent operation is performed based on the set intermediate stop water level or stop time.

  As described above, according to the present invention, it is possible to provide a control device for a submersible pump that can easily adjust the average pumping flow rate of the submersible pump. Even if the amount of water supplied by the submersible pump installed in the upstream manhole pump device is larger than the amount of water supplied by the submersible pump installed in the downstream manhole pump device, the downstream manhole pump device overflows. It is now possible to provide a manhole pump device control device and an operation method capable of appropriately supplying water without the need for water.

Schematic of a manhole pump device according to the present invention Block diagram of control device Flow chart of submersible pump start control and intermittent operation Flow chart of submersible pump start control that sets multiple intermediate stop water levels and performs intermittent operation multiple times Flow chart of submersible pump start-up control that switches between intermittent operation and continuous operation according to the time zone Illustration of communication by the communication unit (A) Water level and intermediate stop water level of downstream manhole pump device, (b) Water level of downstream manhole pump device and stop time during intermittent operation, (c) Water level fluctuation and intermediate stop of downstream manhole pump device Water level, (d) is an explanatory diagram of table data showing the correspondence between the water level fluctuation of the downstream side manhole pump device and the stop time during intermittent operation Flow chart of start control of submersible pump that performs intermittent operation based on water level and water level fluctuation of downstream manhole pump device Explanatory drawing of the table data which shows the correspondence of the table data which shows the correspondence of the water level fluctuation | variation of a downstream manhole pump apparatus, and an intermediate stop water level, and a time slot | zone (A) is the water level of the downstream manhole pump device and whether to allow intermittent operation, (b) is an explanatory diagram of table data showing the correspondence between the water level fluctuation of the downstream manhole pump device and whether to allow intermittent operation. Flow chart of start control of submersible pump that switches between intermittent operation and continuous operation based on water level and water level fluctuation of downstream manhole pump device Flow chart of submersible pump start-up control and intermittent operation that controls restart of submersible pump based on the water level of the downstream manhole pump device Illustration of a conventional manhole pump device Illustration of a conventional manhole pump device

  Below, the control apparatus and operation method of the manhole pump apparatus by this invention are demonstrated.

  As shown in FIG. 1, the manhole pump device 10 includes a manhole 12 for storing sewage flowing in from the sewage inflow pipe 11a, and two submersible pumps 13 for pumping the sewage stored in the manhole 12 to the sewage outflow pipe 11b. A water level sensor 14 for measuring the level of sewage stored in the manhole 12 is provided.

  The water level sensor 14 is an injection pressure type or bubble type water level sensor, is installed at the bottom of the manhole 12, and the water level sensor 14 continuously detects the level of sewage stored in the manhole 12. Further, in preparation for failure of the water level sensor 14, a backup float type water level sensor 15 for detecting an abnormally high water level HHWL is installed.

  Each submersible pump 13 is equipped with a rotary blade built in the casing, a main shaft that rotates the rotary blade, and an induction motor that rotates the main shaft, and is connected to the discharge port for discharging sewage sucked from the suction port. The sewage outflow pipe 11b is configured to be pressure-fed through a pressure-feed pipe. The pressure feed pipe is provided with a check valve so that the sewage under pressure does not flow backward.

  A control panel as a control device 20 is installed on the ground near the manhole pump device 10 or inside the manhole pump device 10.

  As shown in FIG. 2, the control device 20 includes a control unit 21 that operates the electromagnetic switch based on the stored water level detected by the water level sensor 14 to drive the submersible pump 13, and the stored water level and the submersible pump device. A communication unit 22 is provided for monitoring the operating state and transmitting the monitoring information to a centralized management apparatus installed in a remote management center.

  The control device 20 is configured to display various control information such as a water level and the amount of current supplied to the submersible pump 13, and various setting information used by the control unit 21 and the communication unit 22. Input operation keys such as numeric keys and buttons for operation and manual operation of the submersible pump 13 are provided.

  When the water level measured by the water level sensor 14 reaches a predetermined pump activation water level HWL, the control unit 21 activates one of the submersible pumps 13 via the electromagnetic switch, and the pump stop water level lower than the pump activation water level HWL. When it reaches LWL, it outputs a stop signal after being driven for a predetermined time by a timer provided therein, and stops the submersible pump that is operating at the stop water level LLWL via the electromagnetic switch. That is, the electric motor incorporated in the submersible pump is controlled to be turned on or off via the electromagnetic switch.

  The control unit 21 alternately operates the submersible pump every time sewage is pumped from the pump start water level HWL to the pump stop water level LWL. When the sewage level reaches an abnormally high water level HHWL, two units are operated simultaneously.

  The control unit 21 generates management data such as the water level detected by the water level sensor at predetermined time intervals, the operating state of the submersible pump, and the presence or absence of abnormality of the submersible pump, and transmits the management data to the centralized management device via the communication unit 22.

  The control unit 21 operates the submersible pump intermittently until the water level reaches the pump stop water level LWL after starting the submersible pump, so that no overflow occurs in the manhole pump device on the downstream side. Adjust the pumping flow rate.

  This will be specifically described below.

  The control unit 21 is used as a working area, a CPU, a ROM that stores various control programs such as start control and stop control of the pump 13 executed by the CPU, various control information used by the control program, and the like. RAM, an input / output circuit for inputting control information such as a water level measured by the water level sensor 14 and a pump failure signal, and outputting a control signal for starting the pump, and a predetermined time set by various control programs A timer that outputs a control signal indicating the passage of the predetermined time is provided later.

  Based on the above-described configuration, after the water level reaches the predetermined pump activation water level HWL and activates the submersible pump 13, the control unit 21 sets the water level to an arbitrary height position between the activation water level HWL and the pump stop water level LWL. When it reaches the set intermediate stop water level NWL, it is configured to restart after stopping for a predetermined stop time. The pump start water level HWL, the intermediate stop water level NWL, the pump stop water level LWL, and the predetermined stop time for stopping the submersible pump 13 are set in advance in the ROM.

  The operation method of the manhole pump device 10 according to this configuration will be described in detail. As shown in FIG. 3, when the water level sensor 14 detects that the water level in the manhole 12 has risen to the activation water level HWL (SA1), the control unit 21 outputs an activation signal and activates the submersible pump 13 (SA2). ), Intermittent operation is started (SA3).

  The control unit 21 starts intermittent operation, and when the water level sensor 14 detects that the water level in the manhole 12 has decreased to the intermediate stop water level NWL (SB1), the operation of the submersible pump 13 is stopped (SB2), The stop time is set and the timer is driven (SB3). When the control unit 21 detects that a control signal is output from the timer after a predetermined stop time has elapsed (SB4), it starts the submersible pump 13 again (SB5) and ends the intermittent operation.

  After the end of the intermittent operation, when the water level sensor 14 detects that the water level in the manhole 12 has decreased to the pump stop water level LWL (SA4), the control unit 21 sets a predetermined time and drives the timer (SA5). When it is detected that a control signal is output from the timer after a predetermined time has elapsed (SA6), the operation of the submersible pump 13 is stopped (SA10). Note that the steps of SA5 and SA6 may be omitted, and the operation of the submersible pump 13 may be stopped at the pump stop water level LWL.

  That is, after starting the submersible pump 13, the control unit 21 can extend the time required for water supply until the water level reaches the pump stop water level LWL from the pump start water level HWL by at least a predetermined time for stopping the submersible pump 13. Therefore, the average pumping flow rate per unit time can be adjusted so that overflow does not occur in the downstream manhole pump device.

  In addition, after the water level reaches the predetermined pump activation water level HWL and the submersible pump 13 is activated, the intermittent operation is repeatedly performed at predetermined time intervals until the water level drops to the pump stop water level LWL. Good. Also in this case, the average pumping flow rate per unit time can be easily adjusted by changing the time interval.

  Further, a plurality of intermediate stop water levels NWL having different water levels are set, and the control unit 21 starts the submersible pump 13 after the water level reaches a predetermined pump start water level HWL and each time the water level reaches each intermediate stop water level NWL. It may be configured to restart after stopping for a predetermined stop time. However, in this case, it is assumed that N intermediate stop water levels NWL having different water levels are set in the ROM in descending order from the highest water level.

  Hereinafter, the operation method of the manhole pump device 10 according to the present configuration will be described in detail with reference to FIG. 4. In the figure, the steps with the same symbols as those shown in FIG. Omitted.

  After executing steps SA1 and SA2, the control unit 21 sequentially acquires each of the N intermediate stop water levels NWL from the ROM, and uses each acquired intermediate stop water level NWL in the determination of step SB1. (SA31, SA32), and intermittent operation (SB1-SB5) is executed (SA34, SA35).

  That is, after the submersible pump 13 is activated, the control unit 21 sets the time required for the water level to flow from the pump activation water level HWL to the pump stop water level LWL, at least every time the water level reaches each intermediate stop water level NWL. Since the pump can be extended by a predetermined time for stopping the pump, the average pumping flow rate per unit time can be adjusted step by step so that overflow does not occur in the downstream manhole pump device.

  Further, in addition to the above-described configuration, as shown by the dotted line part in FIG. 2, the water level setting unit 23 that sets the intermediate stop water level NWL in the control device 20 and the intermediate stop water level NWL set by the water level setting unit 23 You may comprise so that the stop time setting part 24 which sets the stop time which stops the pump 13 may be provided.

  Specifically, the water level setting unit 23 and the stop time setting unit 24 stop the submersible pump 13 at the intermediate stop water level NWL and the intermediate stop water level NWL using the input operation keys provided in the control device 20, respectively. The stop time to be set is set to a predetermined address in the RAM. In accordance with this, the intermediate stop water level NWL and stop time set in the above-described ROM are configured to refer to the intermediate stop water level NWL and stop time set at predetermined addresses in the RAM, respectively.

  That is, since the intermediate stop water level NWL is set by the water level setting unit 23, and the stop time for stopping the submersible pump 13 at the intermediate stop water level NWL set by the water level setting unit 23 can be set by the stop time setting unit 24. For example, the actual water supply amount of the downstream manhole pump device can be checked in advance, and the intermediate stop water level NWL and stop time appropriately adjusted according to the water supply amount can be set.

  In the above-described configuration, the water level setting unit 23 and the stop time setting unit 24 are configured to manually set the intermediate stop water level NWL and the stop time using the input operation keys. It is configured so that the water supply amount of the downstream manhole pump device can be input manually or automatically via the input operation key or via the communication unit 22, and further, the water supply amount of the downstream manhole pump device and the intermediate stop water level NWL Alternatively, an appropriate intermediate stop water level NWL and stop time are automatically set based on the input water supply amount, such as setting table data associated with the stop time so that it can be acquired in advance. You may comprise.

  Further, in addition to the configuration described above, the control unit 21 includes a time zone setting unit 25 that sets an intermittent operation time zone, as shown by a dotted line portion in FIG. 2, and the intermittent operation set by the time zone setting unit 25. The submersible pump 13 may be intermittently operated in a time zone, and the submersible pump 13 may be continuously operated in a time zone other than the intermittent operation time zone. However, in this case, the time zone setting unit 25 is configured to set an intermittent operation time zone using an input operation key provided in the control device 20 and set it to a predetermined address in the RAM. To do.

  Hereinafter, the operation method of the manhole pump apparatus 10 according to the present configuration will be described in detail with reference to FIG. 5. In the figure, the steps with the same symbols as those shown in FIG. Omitted.

  After executing steps SA1 and SA2, the control unit 21 acquires the intermittent operation time zone set in the RAM by the time zone setting unit 25, and when the time being executed is the intermittent operation time zone (SA8; Y) The intermittent operation described above is executed (SA3), and when the time being executed is a time zone other than the intermittent operation time zone (SA8; N), the continuous operation for continuing the operation of the submersible pump 13 is continued. Do.

  The intermittent operation time zone is composed of, for example, two times of a start time and an end time, and in step SA8, the intermittent operation time is determined depending on whether or not the execution time is a time between the start time and the end time. It is determined whether or not it is a belt.

  That is, since the intermittent operation time zone in which the submersible pump 13 is intermittently operated can be set by the time zone setting unit 25, for example, the morning or evening time zone with a lot of domestic wastewater is set as the intermittent operation time zone in advance. It becomes possible to appropriately set the time zone for intermittent operation according to the grasped inflow amount by time zone.

  The time zone setting unit 25 is configured to set a plurality of intermittent operation time zones, and step SA8 is performed when the time during the step execution is included in any of the plurality of intermittent operation time zones set. May be configured to perform intermittent operation and to perform continuous operation when not included in any of a plurality of intermittent operation time zones set.

  In this case, since a plurality of intermittent operation time zones can be set by the time zone setting unit 25, even when the downstream manhole pump device has a large amount of inflow in a plurality of time zones, a plurality of intermittent operation time zones are set. Thus, the average pumping flow rate can be adjusted appropriately.

  Moreover, you may comprise the communication part 22 so that the water level of the downstream manhole pump apparatus to which sewage is pumped by the submersible pump 13 may be acquired.

  Specifically, as shown in FIGS. 2 and 6, the communication unit 22 provided in the control device 20 of the manhole pump device 10 is connected to the upstream manhole pump device 10 and the downstream manhole pump devices 10 a and 10 b. Operation of the submersible pump 13 that is controlled by the control unit 21 such as operation / stop and operation time, occurrence of failure, etc. with the communication unit provided or an external device such as the management center 52 that centrally manages each manhole pump device It is configured to transmit and receive control information such as the situation and the water level and water storage capacity of each manhole pump device.

  The communication unit 22 can be configured by a communication terminal corresponding to a public line network such as a data line network, a mobile phone network, and a general telephone line network, or a local communication medium such as a small area radio.

  In FIG. 6, communication between the manhole pump devices 10, 10a, 10b is performed by a communication terminal for the low-power wireless network 54, and a communication terminal is provided that supervises control information obtained through each communication terminal. A communication device that communicates with an external device is installed in the manhole pump device 10. The communication apparatus is configured by a communication apparatus for the mobile phone network 55 and an example in which communication with the management center 52 is performed via the base station 53 is shown.

  Even if the communication between the manhole pump devices 10, 10a, 10b is not performed by the communication terminal for the low power wireless network 54, each manhole pump device 10, 10a, 10b is provided with a communication device that communicates with an external device. Each of the manhole pump devices 10, 10 a, 10 b may be configured to communicate with the management center 52 via the base station 53.

  The management center 52 centrally manages the operating status of each manhole pump device 10, 10a, 10b and the control information transmitted / received. When an accident such as a failure or overflow is detected, a notification is issued to the nearest management office. Control information such as the water level and water storage capacity of the manhole pump device is received, and the received control information is transmitted to each manhole pump device based on a request from the communication unit of each manhole pump device.

  That is, the communication unit 22 is configured to be able to receive control information such as the water level and water storage capacity of the downstream manhole pump devices 10a and 10b via the base station 53 and the management center 52 or by the low power wireless network 54. ing.

  Based on the above-described configuration, the control unit 21 stops the submersible pump 13 at the intermediate stop water level NWL or the intermediate stop water level NWL based on the water level or the water level fluctuation of the downstream manhole pump device acquired by the communication unit 22. You may comprise so that stop time may be set.

  Hereinafter, the operation method of the manhole pump apparatus 10 according to the present configuration will be described in detail with reference to FIGS. 7 and 8. In the figure, the steps with the same symbols as those shown in FIG. Therefore, explanation is omitted.

  As shown in FIG. 7A, table data for associating the water level of the downstream manhole pump device with the intermediate stop water level NWL is set in advance in the ROM.

  As shown in FIG. 8, after executing steps SA1 and SA2, the control unit 21 acquires the water level of the downstream manhole pump device via the communication unit 22 (SA9), and from the table data set in the ROM, The intermediate stop water level NWL corresponding to the water level is acquired, the intermediate stop water level NWL is set as the intermediate stop water level NWL used in the intermittent operation (SB1 to SB5) (SA10), and the intermittent operation is executed (SA3).

  Similarly, for example, as shown in FIG. 7B, table data that associates the water level of the downstream manhole pump device with the stop time for stopping the submersible pump 13 at a predetermined intermediate stop water level NWL preset in the ROM. May be preset in the ROM.

  However, in this case, in step SA10, the control unit 21 acquires the stop time corresponding to the water level of the downstream manhole pump device acquired in step SA9 from the table data set in the ROM, and uses it in the intermittent operation. It shall be configured to be set as the stop time.

  Further, for example, as shown in FIGS. 7C and 7D, the ROM corresponds to the water level fluctuation of the downstream manhole pump device in advance and the stop time for stopping the submersible pump 13 at the intermediate stop water level NWL or the intermediate stop water level NWL. Table data to be attached may be set.

  However, in this case, in step SA9, the control unit 21 obtains the water level of the downstream side manhole pump device through the communication unit 22 for a predetermined time and calculates the water level fluctuation. In step SA10, the table set in the ROM The intermediate stop water level NWL or stop time corresponding to the water level fluctuation of the downstream manhole pump device calculated in step SA9 is acquired from the data, and is set as the intermediate stop water level NWL or stop time used in the intermittent operation. Shall.

  That is, the control unit 21 sets a stop time for stopping the submersible pump 13 at the intermediate stop water level NWL or the intermediate stop water level NWL based on the water level or the water level fluctuation of the downstream manhole pump device acquired by the communication unit 22. Therefore, for example, even when the water level fluctuates rapidly, such as when rainwater flows in due to sudden rain, the submersible pump is appropriately stopped at the intermediate stop water level NWL or the intermediate stop water level NWL. It becomes possible to set a stop time for stopping 13.

  Moreover, since the value obtained by multiplying the water level fluctuation and the storage capacity can be considered as the amount or amount of inflow of sewage, table data that associates the amount of inflow or amount of inflow with the intermediate stop water level NWL or the stop time during intermittent operation. It may be set in the ROM in advance.

  However, in this case, in step SA9, the control unit 21 obtains the water level of the downstream manhole pump device through the communication unit 22 for a predetermined time to calculate the water level fluctuation, and further acquires the water storage capacity to obtain the water level fluctuation. In step SA10, the intermediate stop water level NWL or stop time corresponding to the water supply amount or inflow amount calculated in step SA9 is obtained from the table data set in the ROM. The intermediate stop water level NWL used in the intermittent operation or the stop time is set.

  Moreover, you may comprise each table data shown in FIG. 7 so that it may differ for every time slot | zone. However, in this case, the control unit 21 is configured to acquire an intermediate stop water level or stop time from the table data of the corresponding time zone after determining in which time the execution time corresponds in step SA10. It goes without saying that there is a need to do.

  For example, in this case, as shown in FIG. 9, the water level or the water level fluctuation of the downstream manhole pump device is slightly increased in the time zone where the amount of domestic wastewater is small and the inflow rate is low on average as in the midnight time zone. Even so, it is determined that the water will not overflow, and the intermediate stop water level NWL can be set low, and water can be fed at an average pumping flow rate per unit time similar to that in the continuous operation.

  On the other hand, there is a risk that the downstream manhole pump device will overflow if the amount of water supplied from the upstream manhole pump device increases in the time zone where there is a lot of domestic wastewater in the morning or evening and the amount of inflow is considered to be large on average. Therefore, the intermediate stop water level NWL is set to a high value and the intermittent operation is executed early, and the water level from the upstream manhole is stopped until the water level of the downstream manhole pump device is lowered to some extent and the fluctuation of the water level stops. Can do.

  Based on the above-described configuration, the control unit 21 is configured to switch between intermittent operation and continuous operation based on the water level or water level fluctuation of the downstream manhole pump device acquired by the communication unit 22. May be.

  Hereinafter, the operation method of the manhole pump device 10 according to the present configuration will be described in detail with reference to FIGS. 10 and 11. In the figure, the steps with the same symbols as those shown in FIGS. 3 and 5 are the same as those described above. Since it is the contents, the description is omitted.

  As shown in FIG. 10A, table data for associating the water level of the downstream manhole pump device with control information indicating whether or not to perform intermittent operation is set in advance in the ROM.

  As shown in FIG. 11, the control unit 21 acquires the water level of the downstream manhole pump device via the communication unit 22 (SA11), and performs intermittent operation corresponding to the water level from the table data set in the ROM. If control information indicating whether or not to execute is set to perform intermittent operation according to the control information (SA12; Y), the intermittent operation is executed (SA3), and the intermittent operation is not executed (SA12; N), the submersible pump 13 is continuously operated without being stopped.

  Similarly, for example, as shown in FIG. 10 (b), table data that associates the water level fluctuation of the downstream manhole pump device with control information indicating whether or not to perform intermittent operation is preset in the ROM. Also good.

  The table data is not limited to the values shown in FIGS. 10A and 10B, and any value can be set.

  However, in this case, in step SA11, the control unit 21 obtains the water level of the downstream side manhole pump device for a predetermined time via the communication unit 22, calculates the water level fluctuation, and in step SA12, the table set in the ROM. Control information indicating whether or not the intermittent operation corresponding to the water level fluctuation of the downstream manhole pump device calculated in step SA9 is acquired from the data, and it is determined whether or not the intermittent operation is executed based on the control information. It shall be comprised as follows.

  That is, since the control unit 21 can switch between intermittent operation and continuous operation based on the water level or water level fluctuation of the downstream manhole pump device acquired by the communication unit 22, for example, due to sudden rain Even in the case where the fluctuation of the water level suddenly increases, such as when rainwater flows in, it is possible to appropriately switch between intermittent operation and continuous operation in response to this.

  Moreover, based on the above-mentioned structure, when the water level of the downstream manhole acquired by the communication part 22 is more than a 1st threshold value, the control part 21 starts the submersible pump 13, and a water level is set to the intermediate stop water level NWL. If it reaches, the submersible pump 13 may be stopped, and the submersible pump 13 may be restarted when the downstream manhole water level falls below a second threshold value lower than the first threshold value.

  However, in this case, the first threshold value and the second threshold value are values set at arbitrary height positions between the pump start water level HWL and the pump stop water level LWL of the downstream manhole device, and are previously stored in the ROM. It shall be set.

  Hereinafter, the operation method of the manhole pump apparatus 10 according to the present configuration will be described in detail with reference to FIG. 12. In the figure, the steps with the same symbols as those shown in FIG. Omitted.

  After starting the submersible pump 13 (SA2), the control unit 21 acquires the water level of the downstream manhole pump device via the communication unit 22, and determines whether the water level is equal to or higher than the first threshold (SA13). .

  When the water level of the downstream manhole pump device is equal to or lower than the first threshold, the control unit 21 may cause overflow of the downstream manhole pump device even if the sewage is pumped to the downstream manhole pump device. The submersible pump 13 is continuously operated (SA13; N).

  When the water level of the downstream manhole pump device is equal to or higher than the first threshold, the control unit 21 starts intermittent operation (SA3), and stops the submersible pump 13 when the water level reaches the intermediate stop water level NWL (SB1, SB2).

  When the submersible pump 13 is stopped, the control unit 21 acquires the water level of the downstream manhole pump device via the communication unit 22 at a predetermined time interval set in advance in the ROM, and the water level falls below the second threshold value. Until it becomes, it waits with the submersible pump 13 stopped (SB6; N).

  When the control unit 21 detects that the water level of the downstream manhole pump device acquired from the communication unit 22 is equal to or lower than the second threshold (SB6; Y), the control unit 21 restarts the pump (SB5).

  That is, since the control unit 21 drives the submersible pump 13 to supply water until the water level reaches the intermediate stop water level NWL, it is possible to avoid the possibility that overflow occurs in the upstream manhole pump device.

  Further, when the control unit 21 supplies water when the water level of the downstream manhole pump device exceeds the first threshold, the water supply may cause overflow of the downstream manhole pump device. After the water supply to reach the intermediate stop water level NWL, the water level of the downstream manhole pump device becomes equal to or lower than the second threshold value, and it can be determined that there is no risk of overflow in the downstream manhole pump device. The water supply can be stopped until the time.

  In the above-described embodiment, the manhole pump device has been described as an example. However, the present invention is not limited to this, and the control device for the submersible pump for other uses that pumps the water stored in the water storage tank. Good.

  Further, the specific configuration of the control device and the operation method of the manhole pump device is not limited to the description of the embodiment, and it is needless to say that the design can be appropriately changed within the scope of the effects of the present invention.

10: Manhole pump devices 10a, 10b: Downstream manhole pump device 11a: Sewage inflow pipe 11b: Sewage outflow pipe 12: Manhole 13: Submersible pump 14: Water level sensor 15: Water level sensor (for backup)
20: Control device 21: Control unit 22: Communication unit 23: Water level setting unit 24: Stop time setting unit 25: Time zone setting unit HWL: Pump start water level LWL: Pump stop water level NWL: Intermediate stop water level

Claims (10)

Submersible pump device comprising a water storage tank for storing water flowing in from the inflow pipe, a submersible pump for pumping water stored in the water storage tank to the outflow pipe, and a water level sensor for measuring the water level stored in the water storage tank The submersible is equipped with a control unit that starts the submersible pump when the water level measured by the water level sensor reaches the predetermined pump start water level and stops the submersible pump when the pump stop water level lower than the pump start water level is reached. A control device for the pump device,
The controller is a controller for the submersible pump device that adjusts the average pumping flow rate per unit time by intermittently operating the submersible pump until the water level reaches the pump stop water level after the submersible pump is started.   An intermediate stop water level is set between the pump start water level and the pump stop water level, and the control unit stops for a predetermined time when the water level reaches the intermediate stop water level after the water level reaches the predetermined pump start water level and starts the submersible pump. The control device for a submersible pump device according to claim 1, which is restarted later.   Multiple intermediate stop water levels with different water levels are set between the pump start water level and the pump stop water level, and after the water level reaches the predetermined pump start water level and starts the submersible pump, the water level reaches each intermediate stop water level. The control device for a submersible pump device according to claim 2, wherein the control device is restarted after stopping for a predetermined time each time. The water tank is a manhole;
Equipped with a time zone setting unit that sets the intermittent operation time zone, the control unit operates the submersible pump intermittently in the intermittent operation time zone set in the time zone setting unit, and continues the submersible pump in the time zone other than the intermittent operation time zone A manhole pump device comprising the control device for a submersible pump device according to any one of claims 1 to 3. The water tank is a manhole;
It has a communication unit that acquires the water level of the downstream manhole to which water is pumped by the submersible pump, and the control unit is based on the water level or water level fluctuation of the downstream manhole acquired by the communication unit. The manhole pump apparatus provided with the control apparatus of the submersible pump apparatus of Claim 2 or 3 which sets the stop time which stops a submersible pump at a water level. The water tank is a manhole;
It has a communication unit that acquires the water level of the downstream manhole to which water is pumped by the submersible pump, and the control unit performs intermittent operation or continuous operation based on the water level or water level fluctuation of the downstream manhole acquired by the communication unit. The manhole pump apparatus provided with the control apparatus of the submersible pump apparatus in any one of Claim 1 to 3 which switches. The water tank is a manhole;
An intermediate stop water level is set between the pump start water level and the pump stop water level, and a communication unit that acquires the water level of the downstream manhole to which water is pumped by the submersible pump is provided.
When the water level of the downstream manhole acquired by the communication unit is equal to or higher than the first threshold, the control unit stops the submersible pump when the water level reaches the intermediate stop water level after starting the submersible pump, and the downstream manhole The manhole pump apparatus provided with the control apparatus of the submersible pump apparatus of Claim 1 which restarts the said submersible pump when the water level of becomes below the 2nd threshold value lower than a 1st threshold value. It is installed in a manhole that has a manhole that stores the water flowing in from the inflow pipe, a submersible pump that pumps the water stored in the manhole to the outflow pipe, and a water level sensor that measures the water level of the water stored in the manhole. The operation method of the manhole pump device that starts the submersible pump when the water level measured by the water level sensor reaches a predetermined pump start water level, and stops the submersible pump when the pump stop water level lower than the pump start water level is reached,
A manhole pump device operating method in which the submersible pump is intermittently operated to adjust the average pumping flow rate per unit time until the water level reaches the pump stop water level after the submersible pump is started.   An intermediate stop water level is set between the pump start water level and the pump stop water level.After the water level reaches the predetermined pump start water level and the submersible pump is started, if the water level reaches the intermediate stop water level, it is stopped for a predetermined time and then restarted. The manhole pump device operating method according to claim 8.   Set the stop time to stop the submersible pump at the intermediate stop water level or the intermediate stop water level based on the water level of the downstream manhole pump device to which the sewage is pumped by the submersible pump, and based on the set intermediate stop water level or stop time The manhole pump device operating method according to claim 8 or 9, wherein intermittent operation is performed.

Images