JP2015034513A - Abnormality detection device, polluted water transfer pump device and monitoring device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an abnormality detection device capable of accurately judging presence or non-presence of occurrence of abnormality at a pump and a pump system, polluted water transfer pump device and a monitoring device.SOLUTION: This invention relates to an abnormality detection device 30 for a polluted water transfer pump device 10 comprising a water storage part 12 for storing polluted water flowed from an inflow pipe 11; a plurality of pumps 14, 16 for discharging polluted water stored in the water storage part 12 into an outflow pipe 13; water level gauges 18, 19 for measuring a water level of polluted water stored in the water storage part 12; and a control part 21 for energizing a certain pump when the measured water level reaches up to a pump energizing water level and executing the polluted water transfer control to stop the corresponding pump when the water level reaches up to a pump stopping water level. This abnormality detection device comprises a storage part 22 for storing characteristic values at the time of operation of each of the pumps 14, 16; and an abnormality judging part 23 for calculating an average characteristic value per prescribed number of times of energizing in reference to the characteristic values stored in the storage part 22 and judging a presence or non-presence of abnormality of each of the pumps on the basis of a result of comparison of the average characteristic values of each of the pumps.

Description

  The present invention relates to an abnormality detection device, a sewage transport pump device, and a monitoring device, and in particular, a water storage unit that stores sewage flowing in from an inflow pipe, and a plurality of pumps that drain sewage stored in the water storage unit to an outflow pipe; , A water level meter that measures the level of sewage stored in the water reservoir, and when the water level measured by the water level meter reaches the pump activation level, either pump is activated to drain the sewage into the outflow pipe, and the water level is pumped The present invention relates to an abnormality detection device for a sewage transfer pump device including a control unit that executes sewage transfer control for stopping the pump when a stop water level is reached.

  A manhole pump device, which is an example of a sewage transport pump device, is usually provided with two pumps, and these pump devices are operated alternately every time sewage transport control is performed.

  Conventionally, even if an abnormality such as a blockage occurs in any of a plurality of pumps and the drainage capacity is changed, the fact cannot be grasped. There has been a problem that the operation time of a pump that causes an overflow from a manhole or an abnormality such as a blockage becomes abnormally longer than the operation time of other pumps, and the life of both pumps becomes unbalanced.

  In Patent Document 1, in order to solve such a problem, a value obtained by dividing an integrated inflow amount per predetermined time to be discharged by a plurality of pumps in a pumping station by an operation time within the predetermined time of each pump. Means for managing the average drainage capacity of the pump with time series data, means for determining whether the average drainage capacity of each pump managed as the time series data exceeds a preset drainage capacity range, and A pumping station monitoring system has been proposed that includes means for issuing an alarm when the average drainage capacity of each of the plurality of pumps exceeds a set drainage capacity range.

  In such a monitoring system, the average drainage capacity of each of the plurality of pumps provided at the pumping station is managed as time series data, and the average drainage capacity of each pump in the event of an abnormal situation such as clogging inside the pump. Changes and exceeds the preset drainage capacity range, it is determined as abnormal.

JP 2001-34338 A

  However, in the above-described conventional abnormality determination device, when there is a problem such as blockage in the sewage transfer pipe itself such as the outflow pipe drained from either of the two pumps, or a certain amount is unknown in the manhole When water flows in, even if the pump is not clogged, if the average drainage capacity exceeds a preset drainage capacity range, it is determined that the pump is abnormal.

  In view of the above-described problems, an object of the present invention is to provide an abnormality detection device, a sewage transport pump device, and a monitoring device that can accurately determine the presence or absence of an abnormality in a unique system or common system of pumps.

  In order to achieve the above-mentioned object, the first characteristic configuration of the abnormality detection device according to the present invention is as described in claim 1 of the present invention, and includes a water storage section for storing sewage flowing from an inflow pipe, and the water storage A plurality of pumps for draining the sewage stored in the drain to the outflow pipe, a water level meter for measuring the level of the sewage stored in the water storage unit, and the water level measured by the water level meter reaches the pump start water level Detecting an abnormality in a sewage transport pump device including a control unit that activates one of the pumps to drain sewage into the outflow pipe and stops the pump when the water level reaches the pump stop water level A storage unit for storing characteristic values during operation of each pump, and calculating an average characteristic value per predetermined number of activations from the characteristic values stored in the storage unit, and calculating the average characteristic value of each pump Based on the comparison results The presence or absence of abnormality of the perforated lines or a common system in that it includes an abnormality determination unit for determining.

  The abnormality determining unit calculates an average characteristic value per predetermined number of start times of the characteristic value during operation of each pump stored in the storage unit with time, and compares the average characteristic value of each pump. For example, if the average characteristic value of each pump is greatly different, it is determined that there is an abnormality in one of the pumps. If the average characteristic value of each pump is almost the same, there is an abnormality in the system unique to each pump. If the value is larger than the reference value, it is determined that the abnormality is caused by other factors.

  In the second feature configuration, as described in claim 2, in addition to the first feature configuration described above, the abnormality determination unit is configured such that the difference between the average characteristic values of the pumps exceeds a predetermined difference threshold value. In addition, it is determined that an abnormality has occurred in the pump-specific system having a large average characteristic value.

  When the difference between the average characteristic values of the pumps exceeds a predetermined difference threshold, the abnormality determination unit determines that an abnormality has occurred in any pump-specific system, and the pump has a large average characteristic value. It is determined that the system is clogged or leaked.

  In the third feature configuration, as described in claim 3, in addition to the second feature configuration described above, the abnormality determination unit determines that an abnormality has occurred in any of the pump-specific systems. Then, the abnormality determination information is output to the control unit.

  Based on the abnormality determination information output from the abnormality determination unit to the control unit, the system unique to the pump determined to have an abnormality is determined. As a result, the control unit can appropriately perform sewage transfer control even in an abnormal state. For example, if sewage transfer control is performed using a pump other than a pump that has been determined to have an abnormality in a system unique to the pump, an overflow accident from the water storage unit is avoided in advance.

  In the fourth feature configuration, as described in claim 4, in addition to any of the first to third feature configurations described above, the abnormality determination unit is configured so that the average characteristic values of each pump are all predetermined. When the average characteristic threshold is exceeded, it is determined that an abnormality has occurred in the system common to each pump.

  When all the average characteristic values of the pumps exceed a predetermined average characteristic threshold value, the abnormality determination unit determines that there is no abnormality in the system unique to each pump and that the abnormality is due to other factors. For example, it is possible to determine that there is a possibility of leakage of the sewage transfer pipe common to each pump or a certain amount of unknown water flowing into the water storage part, making it easy to identify the cause of the abnormality and take countermeasures Become.

  As described in the fifth aspect, the fifth characteristic configuration includes a water storage section that stores sewage flowing in from the inflow pipe, and a plurality of pumps that drain the sewage stored in the water storage section to the outflow pipe, A water level meter that measures the level of sewage stored in the water storage unit, and when the water level measured by the water level meter reaches the pump start level, any pump is activated to drain the sewage into the outflow pipe, And a control unit that executes sewage transfer control to stop the pump when the pump stop water level is reached, and is an abnormality detection device for a plurality of sewage transfer pump devices installed from upstream to downstream of a common sewage transfer pipe. A storage unit for storing the characteristic value during operation of each pump, and an average characteristic value per predetermined number of activations from the characteristic value stored in the storage unit, and each installed in a different sewage transport pump device Comparison of average pump characteristics In that it includes an abnormality determination unit determining presence of abnormality in the specific line or a common line of the pump between different sewage transport pump apparatus based on.

  When multiple sewage transport pump devices are installed from upstream to downstream of the common sewage transport pipe, for example, installed along a single sewage transport pipe upstream from the junction where the multiple sewage transport pipes merge In a plurality of sewage transport pump devices installed and a plurality of sewage transport pump devices installed along one sewage transport pipe downstream from the confluence, the amount of sewage transported from each sewage transport pump device It is assumed that there are no major fluctuations.

  Under such conditions, by comparing the average characteristic values of the pumps installed in different sewage transfer pump devices, for example, the average characteristic values of the pumps may be greatly different, as in the first characteristic configuration. If the average characteristic value of each pump is almost equal, there is no abnormality in the system unique to each pump, and the value is larger than the reference value. Therefore, it is determined that the abnormality is caused by other factors.

  In the sixth feature configuration, as described in claim 6, in addition to the fifth feature configuration described above, the abnormality determination unit is configured such that a difference in average characteristic value of each pump is different between different sewage transfer pump devices. In the case where a predetermined difference threshold value is exceeded, it is determined that an abnormality has occurred in the pump-specific system having a large average characteristic value.

  Similarly to the second feature configuration, when the difference between the average characteristic values of the pumps between the different sewage transfer pump devices exceeds a predetermined difference threshold, the abnormality determination unit assigns the system to any pump-specific system. It is determined that an abnormality has occurred, and it is determined that clogging or leakage has occurred in a pump-specific system having a large average characteristic value.

  In the seventh feature configuration, in addition to the sixth feature configuration described above, the abnormality determination unit determines that an abnormality has occurred in any of the pump-specific systems. Then, it is in the point which outputs the said abnormality determination information to the control part of the sewage conveyance pump apparatus by which abnormality determination was carried out.

  Similar to the third feature configuration, the system specific to the pump of the sewage transfer pump apparatus determined to be abnormal is determined by the abnormality determination information output from the abnormality determination unit to the control unit. . As a result, the control unit can appropriately perform sewage transfer control even in an abnormal state. For example, if sewage transfer control is performed using another pump in the same sewage transfer pump device as the pump determined to have an abnormality in the inherent system, an overflow accident from the water storage unit is avoided in advance. The

  In the eighth feature configuration, as described in claim 8, in addition to any of the fifth to seventh feature configurations described above, the abnormality determination unit is configured so that the average characteristic values of each pump are all predetermined. When the average characteristic threshold is exceeded, it is determined that an abnormality has occurred in the system common to each pump.

  When all of the average characteristic values of each pump exceed a predetermined average characteristic threshold value, the abnormality determination unit determines that there is no abnormality in the system unique to each pump, and abnormality due to other factors. For example, it is possible to determine that there is a possibility of leakage of the sewage transfer pipe common to each pump or a certain amount of unknown water flowing into the water storage part, making it easy to identify the cause of the abnormality and take countermeasures Become. For example, when two pumps are installed in two sewage transfer pump devices, the case where all of the four pump devices exceed a predetermined average characteristic threshold value is applicable.

  In the ninth feature configuration, as described in claim 9, in addition to any of the fifth to eighth feature configurations described above, the abnormality determination unit is configured so that each pump of one sewage transport pump device has When the average characteristic values are all less than the predetermined average characteristic threshold value, and the average characteristic values of the respective pumps of the sewage transfer pump device on the downstream side or the upstream side of one sewage transfer pump device exceed all the predetermined average characteristic threshold values, The point is that it is determined that an abnormality has occurred in some common system from the start point of the upstream common pump system to the end point of the downstream common pump system.

  For example, when the average characteristic value of each pump of the upstream sewage transfer pump device is less than a predetermined average characteristic threshold value, and the average characteristic value of each pump of the downstream sewage transfer pump device exceeds all the predetermined average characteristic threshold value It can be determined that unknown water is flowing somewhere between the two sewage transfer pump devices, or that there is an abnormality such as leakage or blockage in the common system of each downstream pump. When the average characteristic value of each pump of the transfer pump device is less than the predetermined average characteristic threshold value, and the average characteristic value of each pump of the upstream sewage transfer pump device exceeds all the predetermined average characteristic threshold value, the upstream side It can be determined that an abnormality such as water leakage or blockage has occurred in the system common to each pump of the sewage transport pump device.

  According to the tenth feature configuration, in addition to any one of the first to ninth feature configurations described above, the characteristic value is a pump operation time or a pump drive current. is there.

  As the characteristic value used for determining whether there is an abnormality, the pump operation time or the pump drive current is preferably used. Only one of the characteristic values may be used, or both characteristic values may be used. For example, when the pump is clogged, the amount of drainage decreases and the pump operation time becomes longer than that of a normal pump even if the amount of drainage is the same. In addition, the load increases and the pump drive current increases. With these characteristic values, it is possible to appropriately determine the abnormality of the unique system or common system of the pump.

  The characteristic configuration of the sewage transfer pump device according to the present invention is that, as described in claim 11, the abnormality detection device having any one of the first to fourth characteristic configurations described above is incorporated.

  When the abnormality detection device is incorporated in the sewage transport pump device, it is possible to appropriately determine whether there is an abnormality in each sewage transport pump device.

  The characteristic configuration of the monitoring device according to the present invention is, as described in claim 12, a water storage section for storing sewage flowing in from an inflow pipe, and a plurality of pumps for draining the sewage stored in the water storage section to an outflow pipe And a water level meter that measures the level of sewage stored in the water reservoir, and when the water level measured by the water level reaches the pump activation level, any pump is activated to drain the sewage into the outflow pipe. A control unit that executes sewage transfer control to stop the pump when the water level reaches the pump stop water level, and a sewage transfer pump device that includes a transmission unit that transmits control information by the control unit to the outside, A monitoring device that includes a receiving unit that receives control information transmitted from a transmitting unit, and that monitors the sewage transfer pump device based on the control information received by the receiving unit, wherein any one of the first to tenth above-mentioned Characteristic configuration Comprising abnormality detecting device is incorporated, in that the characteristic value during operation of the pump included in the control information received by the receiving portion is configured to be stored in the storage unit.

  Based on the control information transmitted from a plurality of sewage transport pump devices scattered in the area, if an abnormality detection device is incorporated in the monitoring device that can centrally manage the operation status of each sewage transport pump device, each sewage transport pump device Even if an abnormality detection device is not incorporated, based on the characteristic value at the time of operation of each pump included in the control information, the monitoring device side collectively collects a unique system or a common system of pumps of a plurality of sewage transfer pump devices. Abnormalities and the like can be determined accurately and appropriately.

  As described above, according to the present invention, it is possible to provide an abnormality detection device, a sewage transfer pump device, and a monitoring device that can accurately determine the presence or absence of an abnormality in an inherent system or common system of pumps. became.

Schematic diagram of sewage transport path Schematic of the first embodiment of the anomaly detection device according to the present invention The block diagram of 1st Embodiment of the abnormality detection apparatus by this invention A graph showing the relationship between the operating time and the water level of a normal pump and an abnormal pump Flowchart of abnormality determination process of abnormality detection device according to the present invention Flow chart of drainage control in a manhole pump device equipped with an abnormality detection device according to the present invention Schematic of the second embodiment of the abnormality detection device according to the present invention The block diagram of 2nd Embodiment of the abnormality detection apparatus by this invention Schematic of the third embodiment of the abnormality detection device according to the present invention

  Below, the 1st Embodiment of the abnormality detection apparatus by this invention is described taking the manhole pump apparatus as a sewage conveyance pump apparatus as an example. 1st Embodiment is an aspect with which the abnormality detection apparatus was integrated in the sewage conveyance pump apparatus.

  In FIG. 1, the sewage transport pipes 110 to 112 buried in the ground in an inclined posture that inclines downward toward the downstream side, and a plurality of manhole pump devices 101 to 107 scattered along the sewage transport pipes 110 to 112. A naturally flowing sewage transfer system 100 is shown.

  FIG. 1 shows a case where two systems of sewage transport pipes 110 and 111 are merged by a manhole pump device 105 and then transported to a sewage treatment plant or the like by one system of sewage transport pipes 112.

  The manhole pump apparatus 10 similar to each manhole pump apparatus 101-107 is shown by FIG. The manhole pump device 10 includes two manholes 12 serving as a water storage section for storing sewage flowing from the upstream sewage inflow pipe 11 and two pumps for pumping the sewage stored in the manhole 12 to the sewage outflow pipe 13 on the downstream side. 14 and 16 and water level gauges 18 and 19 for measuring the level of sewage stored in the manhole 12.

  A first pumped pipe 15b, a first bent pipe 15c, and a first horizontal pipe 15d are flange-connected to the discharge bent pipe 15a of the first pump 14, and the first horizontal pipe 15d is connected to the sewage outflow pipe via the header pipe 13a. 13 is flange-connected. Reference numeral 15e is a check valve for preventing the backflow of sewage.

  A second pumped pipe 17b and a second bent pipe 17c are flange-connected to the discharge bent pipe 17a of the second pump 16, and the second bent pipe 17c is flange-connected to the sewage outflow pipe 13 via the header pipe 13a. Yes. Reference numeral 17e is a check valve for preventing the backflow of sewage.

  The first pump 14, the discharge curved pipe 15a, the first pumping pipe 15b, the first curved pipe 15c, and the first horizontal pipe 15d serve as a water supply system (hereinafter simply referred to as “system”) unique to the first pump 14. The second pump 16, the discharge bent pipe 17a, the second pumped water pipe 17b, and the second bent pipe 17c become a system unique to the second pump 16, and the header pipe 13a and the sewage outflow pipe 13 excluding the above-mentioned unique system. The system including the sewage transport pipe from the sewage inflow pipe 11 to the downstream side, and the manhole 12 serve as a common system for the first pump 14 and the second pump 16.

  An injection pressure type or bubble type water level gauge 18 is installed at the bottom of the manhole 12. The water level gauge 18 continuously detects the level of sewage stored in the manhole 12. Further, a float type water level gauge 19 is installed as a backup water level gauge for detecting an abnormally high water level HHWL.

  In the vicinity of the manhole 12, a control panel device in which a control panel 20 including a control unit 21 that controls the pumps 14, 16 and performs sewage transfer control for pumping the sewage collected in the manhole 12 to the sewage outflow pipe 13 is accommodated. 200 is installed.

  As shown in FIG. 3, the control panel 20 is provided with a control unit 21, a storage unit 22, an abnormality determination unit 23, and a communication unit 24. A semiconductor memory (storage element) is incorporated in the storage unit 22, control information from the control unit 21 (operation information including characteristic values described later), water level information from the water level gauges 18 and 19, and abnormality from the abnormality determination unit 23. Determination information and the like are stored in a semiconductor memory (storage element). The communication unit 24 includes a transmission unit that transmits various information stored in the storage unit 22 to the remote monitoring device 40 and a reception unit that receives a control command from the monitoring device 40. The storage unit 22 and the abnormality determination unit 23 constitute the abnormality detection device 30 of the present invention.

  The monitoring device 40 includes a facsimile, a mobile phone, a smartphone, a tablet computer, a personal computer, and the like, and is configured to be able to transmit and receive information in a mode that matches each. Accordingly, the communication mode between the communication unit 24 and the monitoring device 40 is not particularly limited, and may be either a wired line or a wireless line, or may be a dedicated line or a public line. For example, it may be sent and received as electronic mail via the Internet.

  The control panel 20 and the pumps 14 and 16 are connected by AC power supply lines L1 and L2, and the control panel 20 and the water level gauges 18 and 19 are connected by a signal line S.

  When the control unit 21 detects that the water level measured by the water level gauge 18 has reached a predetermined pump start water level HWL, the power supply control is performed from the power supply line L1 to start one of the pumps 14 and 16. Then, when it is detected that the water level has reached the pump stop water level LWL lower than the pump start water level HWL, the power supply is stopped and the one pump 14 is stopped.

  When the control unit 21 detects that the water level has reached the pump start water level HWL again, the control unit 21 performs power supply control from the power supply line L2 to start the other pump 16, and supplies power when detecting that the pump stop water level LWL has been reached. Stop and stop the pump 16. That is, the control unit 21 controls the operation of the pumps 14 and 16 alternately.

  Further, the control unit 21 detects that the pump activation water level HWL cannot be detected due to a failure of the water level gauge 18 or the like, or a large amount of rainwater exceeding the drainage capacity of one pump due to concentrated heavy rain flows into the manhole 12 to cause an abnormally high water level. When it is detected that the water level gauge 19 has reached HHWL, the two pumps 14 and 16 are operated simultaneously.

  The control unit 21 stores, for example, the water level information detected by the water level gauges 18 and 19 at intervals of 1 minute in the storage unit 22 and the number of operations of each pump 14 and 16 per hour and the operation time of one time. The operation information is stored in the storage unit 22.

  The abnormality determination unit 23 includes pump load information indicating the occurrence / recovery of the overload state of the pumps 14 and 16, abnormal high water level information indicating the occurrence / recovery of the abnormal high water level detected by the water level meter 19, and the water level meters 18 and 19. Code data indicating sensor failure information indicating the occurrence / recovery of this failure is stored in the storage unit 22 as event information.

  For example, in the case of the pumps 14 and 16 provided with safety switches that detect an overheat state and automatically shut off the power supply, the abnormality determination unit 23 is in spite of the operation signal being output from the control unit 21. When it is detected that AC is not flowing through the power supply line, it is determined to be in an overload state.

  For example, when a temperature sensor that detects an overheat state is incorporated in the pumps 14 and 16, the abnormality determination unit 23 detects measurement information of the temperature sensor and detects that the value is higher than the abnormality determination threshold temperature. It is comprised so that it may determine with it being a load state.

  For example, the abnormality determination unit 23 is configured to determine that the water level gauge 18 has failed when the measurement information of the water level gauge 18 does not change continuously for a predetermined time.

  When such an abnormality determination unit 23 is provided, a pump blockage abnormality indicating the occurrence / recovery of suction blockage that is longer than the set time after the pump is started until the start water level becomes lower than the set water level, or a pump operation that is longer than the set time It is also possible to detect an airlock abnormality indicating the occurrence / recovery of an airlock in which the time is long and the water level is maintained above the starting water level.

  When the abnormality determination unit 23 determines the occurrence or resolution of such an abnormality, the abnormality determination unit 23 stores the corresponding abnormality information in the storage unit 22 and transmits the abnormality information to the remote monitoring device 40 via the communication unit 24. It is configured.

  Therefore, the administrator who has received the abnormality method with the monitoring device 40 can prepare for the necessary maintenance and deal with it quickly.

  However, if the abnormality determining unit 23 determines a pump blockage abnormality or an air lock abnormality for each of the individual pumps 14 and 16, there is a possibility that the accuracy is lacking. For example, the pump is not clogged when a problem occurs in the sewage outflow pipe 13 itself, which is a common system of the first pump 14 and the second pump 16, or when a certain amount of unknown water flows into the manhole. However, if the average drainage capacity exceeds a preset drainage capacity range, it is determined that the pump is abnormal.

  Therefore, the abnormality determination unit 23 provided in the abnormality detection device 30 according to the present invention calculates an average characteristic value per predetermined number of activations from the characteristic values during operation of the pumps 14 and 16 stored in the storage unit 22, A function is provided for determining whether or not there is an abnormality in the unique system or common system of the pumps based on the comparison result of the average characteristic values of the pumps 14 and 16.

  As the characteristic values during operation of the pumps 14 and 16, pump operation time or pump drive current is preferably used. This is because the pump operation time is an index representing the pump capacity, and the pump drive current is an index representing the load state of the pump. Below, the example which used pump drive time for the characteristic value is demonstrated.

  FIG. 4 shows the time transition of the water level detected by the control unit 21 via the water level gauge 18 and the operation states of the pumps 14 and 16 controlled by the control unit 21 in accordance therewith.

  When the pump start water level HWL is reached at time t1, the first pump 14 is started and the sewage stored in the manhole 12 is sent downstream, and when the pump stop water level LWL is reached, the first pump 14 is stopped.

  When the pump start water level HWL is reached at time t2, the second pump 16 is started and the sewage stored in the manhole 12 is sent downstream, and when the pump stop water level LWL is reached, the second pump 16 is stopped.

  When both pumps 14 and 16 are normal and there is no inflow of unknown water, the pump operation time from the pump start water level HWL to the pump stop water level LWL is substantially the time corresponding to the amount of sewage transport water at the time of planning or steady operation. .

  However, if such alternate operation is repeated and a pump blockage abnormality occurs in the second pump 16 that is started when the pump start water level HWL is reached at time t4, the pump stop water level LWL is reached and the second pump 16 is started. The time until the two pumps 16 are stopped is significantly longer than the time corresponding to the amount of sewage transport water during planning or steady operation.

  Even if the pump blockage abnormality does not occur in the second pump 16, cracks may occur in the discharge bent pipe 17a, the second pumped-up pipe 17b, the second bent pipe 17c, etc., which are unique to the second pump 16, and water leaks. The same phenomenon occurs when such a phenomenon occurs.

  Furthermore, even if the system unique to the second pump 16 including the second pump 16 is normal, a crack enters the sewage transport pipe that is a system common to the first pump 14 and the second pump 16 such as the header pipe 13a, The same phenomenon may occur when water leaks into the manhole 12 or when the sewage transport pipe is blocked, or when unknown amount of water flows into the manhole 12.

  Even in such a case, if the abnormality determining unit 23 determines that a pump blockage abnormality has occurred in the second pump 16, there is a risk of hindering appropriate maintenance. Similarly, the abnormality determination unit 23 may determine that a pump blockage abnormality has occurred in the first pump 14.

  Therefore, the abnormality determination unit 23 is configured to perform an abnormality determination process by calculating an average operation time from the most recent predetermined number of operation times of the pumps 14 and 16 and comparing the two.

  Specifically, the abnormality determination unit 23 calculates the difference between the average operation times of the four most recent operation times of the pumps 14 and 16, and when the absolute value of the difference exceeds a predetermined difference threshold Tth, It is determined that an abnormality has occurred in the pump-specific system having a long average operation time. Inherent system abnormalities include not only deterioration of water supply performance due to pump blockage and aging, but also abnormalities such as water leakage and blockage due to corrosion and cracks in pipes constituting the inherent system. Here, the pump-specific system means an inflow / outflow pipe or valve connected to only the pump including the pump body, and the common system is a water tank or the like commonly used by each pump. , Pipes and valves used for inflow and outflow.

  The number of times to calculate the most recent average operation time is not limited to four, but is a value that is appropriately set according to the amount of sewage transported by each manhole pump device and the generation time of sewage. It is set at the average number of times the pump is started during In this embodiment, since the pump is started about 8 times in 3 to 4 hours, it is set to 4 times per unit.

  On the other hand, if the absolute value of the difference between the average operation times of the two is equal to or less than a predetermined difference threshold, the abnormality determination unit 23 determines that no abnormality has occurred in the system unique to each pump, and each pump 14, When the average operation time of 16 is compared with a predetermined average operation time threshold value AVTth and the average operation time of each pump 14, 16 exceeds the predetermined average operation time threshold value, a system common to each pump 14, 16 is used. It is determined that an abnormality has occurred.

  The abnormalities in the common system include not only abnormalities such as water leakage and blockage due to corrosion and cracking of the pipes constituting the common system, but also abnormalities of inflow of unknown water into the manhole 12 through some route.

  In this embodiment, the probability of occurrence of an abnormality in which the two pumps 14 and 16 are simultaneously closed is extremely low, and determination is made on the assumption that at least one unit is operating normally. When the same abnormality occurs in both of the systems, these may be included in the common system abnormality.

  The value of the predetermined difference threshold Tth described above is not particularly limited and can be set as appropriate. For example, 1.0 times the time T corresponding to the amount of sewage transport water at the time of planning or steady operation To 2.0 times the value.

  The value of the average operation time threshold value AVTth is not particularly limited, and can be set as appropriate. For example, the average operation time threshold value AVTth can be set as appropriate. The value can be set to 0 times.

  Although the difference process has been described as the comparison process of both average operation times, the ratio process is included in the difference process in a broad sense. That is, the ratio between the average operation times of both may be calculated, and the abnormality may be determined based on whether the value exceeds a predetermined threshold value Tth.

  The abnormality determination unit 23 is configured to compare the average operation time of both pumps 14 and 16 only when the pumps 14 and 16 are alternately operated. The abnormal high water level HHWL is detected and both the pumps 14 and 16 are detected. It is not covered when driving at the same time.

  In this way, abnormality information indicating whether there is an abnormality in a system unique to one of the pumps or an abnormality in a system common to both pumps is transmitted to the remote monitoring device 40 via the communication unit 24. Makes it possible to prepare for proper maintenance.

  Also, the abnormality information determined by the abnormality determination unit 23, that is, abnormality information indicating whether there is an abnormality in one of the pump-specific systems or an abnormality in the system common to both pumps is controlled via the storage unit 22. Is output to the unit 21.

  When recognizing that an abnormality has occurred in one of the pump-specific systems, the controller 21 stops the alternating operation of the pumps 14 and 16 and performs sewage transfer control with only one normal pump. Thus, an overflow accident from the manhole 12 is avoided in advance.

  However, even in such a case, when the control unit 21 detects that the abnormal high water level HHWL is measured by the water level gauge 19, the control unit 21 is configured to perform simultaneous operation control including the pumps determined to be abnormal.

  FIG. 5 shows a procedure of abnormality determination processing executed by the abnormality determination unit 23. The abnormality determination unit 23 determines the operation state of the pump (S1), and if the operation of the pump is completed (S1, Y), the average operation of the last four operation times of the pumps 14 and 16 is the last. Times t14 and t16 are calculated (S2), and a difference td between the average operation times t14 and t16 is calculated (S3).

  When the absolute value of the difference td exceeds the predetermined difference threshold (S4, Y) and t14 is greater than t16 (S5, Y), it is determined that an abnormality has occurred in the system unique to the pump 14 (S7a). . Conversely, when t16 is greater than t14 (S5, N), it is determined that an abnormality has occurred in the system unique to the pump 16 (S7b).

  Further, when the absolute value of the difference td is equal to or smaller than the predetermined difference threshold value (S4, N), and both t14 and t16 exceed the predetermined average time threshold value (S6, Y), each pump 14 and 16 has its own characteristic. It is determined that an abnormality has occurred in a portion other than the system (S7c). If at least one of t14 and t16 is equal to or less than the predetermined average time threshold value (S6, N), it is determined that no abnormality has occurred in the manhole pump device 10 (S7d).

  The determination result is stored in the storage unit 22, notified to the remote monitoring device 40 via the communication unit 24, and output to the control unit 21 (S8). The abnormality determination process is executed every time the operation of the pump 14 or 16 is completed, and the abnormality of the pumps 14 and 16 can be accurately determined.

  FIG. 6 shows a procedure of sewage transfer processing executed by the control unit 21. When the water level reaches HWL (S11, Y), the control unit 21 determines whether or not the pumps 14 and 16 are normal (S12), and when one of the pumps is abnormal (S12, Y). A normal pump is started (S13a). If it is determined in step S12 that no abnormality has occurred in both pumps (S12, N), the pump that was not started last time is started (S13b). And the timer which measures the driving | operation time of the said pump is actuated simultaneously with starting a pump (S14).

  Thereafter, when the water level reaches LWL (S15, Y), the pump being operated is stopped (S16), the operation time measured by the timer is stored in the storage unit 22 (S17), and then the timer is reset (S18). Return to step S11.

  As described above, if there is no pump determined to be abnormal, the pumps 14 and 16 are operated alternately. If any pump is determined to be abnormal, only the normal pump is operated to execute the sewage transfer control.

  Next, a second embodiment of the abnormality detection device according to the present invention will be described. In the second embodiment, the above-described abnormality detection device 30 is incorporated in a remote monitoring device 40.

  As shown in FIG. 7, in the vicinity of the manhole 12, there is a control panel 20 including a control unit 21 that controls the pumps 14, 16 and performs sewage transfer control for pumping the sewage accumulated in the manhole 12 to the sewage outflow pipe 13. The accommodated control panel device 200 is installed. The configuration of the manhole pump device 10 is the same as that in FIG. 2, and the same reference numerals are given to components that realize the same function.

  As shown in FIG. 8, the control panel 20 is provided with a control unit 21, a storage unit 22, and a communication unit 24. The remote monitoring device 40 is composed of a general-purpose personal computer and includes functional blocks of a communication unit 41, a storage unit 42, a monitoring unit 43, and an abnormality determination unit 44.

  The control information of each manhole device 10 is transmitted from the communication unit 24 to the communication unit 41 provided in the monitoring device 40 and stored in the storage unit 42. The communication unit 41 also includes a transmission unit and a reception unit, and is configured to be capable of bidirectional communication with each manhole apparatus 10.

  The monitoring unit 43 is a calculation block that analyzes the operating state of each manhole device 10 based on the control information received from each manhole device 10, and is connected to a server that notifies the plurality of managers of the operating state. . Each administrator is configured to access the server and check the operating state of the manhole pump device under management.

  The abnormality determination unit 44 is a calculation block that determines various types of abnormality based on various types of control information stored in the storage unit 42, and the abnormality information is configured to be output to the server via the monitoring unit 43. .

  For example, the abnormality determination unit 44 includes pump load information indicating the occurrence / recovery of the overload state of the pumps 14, 16, abnormal high water level information indicating the occurrence / recovery of the abnormal high water level detected by the water level meter 19, and the water level meter 18. , 19 is recognized based on the code data indicating the sensor failure information indicating the occurrence / recovery of the failure, and the abnormality information is output to the server.

  The abnormality determination unit 44 calculates an average operation time from the most recent predetermined operation time of each of the pumps 14 and 16 for each manhole pump device 10, and performs an abnormality determination process by comparing the two. It is configured.

  Also in this embodiment, the abnormality determination unit 44 calculates the difference between the average operation times of the four most recent operation times of the pumps 14 and 16, and the average value of the difference exceeds the predetermined difference threshold Tth. It is determined that an abnormality has occurred in the system unique to the pump having a long operation time.

  On the other hand, if the absolute value of the difference between the average operation times of the two is equal to or less than the predetermined difference threshold, the abnormality determination unit 44 determines that no abnormality has occurred in the system unique to each pump, and each pump 14, When the average operation time of 16 is compared with a predetermined average operation time threshold value AVTth and the average operation time of each pump 14, 16 exceeds the predetermined average operation time threshold value, a system common to each pump 14, 16 is used. It is determined that an abnormality has occurred.

  That is, the storage unit 42 and the abnormality determination unit 44 constitute an abnormality detection device. Thus, according to this embodiment, since it is not necessary to individually incorporate an abnormality detection device in each manhole pump device 10, each manhole pump device 10 can be configured at low cost, and a plurality of manholes can be configured by the remote monitoring device 40. An abnormality of the pump device 10 can be detected.

  Next, a third embodiment of the abnormality detection apparatus according to the present invention will be described. The third embodiment is an abnormality detection device for a plurality of sewage transfer pump devices installed from the upstream to the downstream of a common sewage transfer pipe, and an average per predetermined number of activations from the characteristic values during operation of each pump. Calculate characteristic values and determine whether there is an abnormality in the unique system or common system of pumps between different sewage transfer pump devices based on the comparison result of the average characteristic values of pumps installed in different sewage transfer pump devices It is the aspect provided with the abnormality determination part to perform.

  A plurality of sewage transport pump apparatuses installed from upstream to downstream of a common sewage transport pipe refers to the manhole pump apparatuses 101 and 102 installed along the sewage transport pipe 110 shown in FIG. The manhole pump devices 103 and 104 installed along the sewage and the manhole pump devices 105, 106 and 107 installed along the sewage transport pipe 112. That is, a path in which the amount of transported sewage is basically constant in the sewage transport path is a common sewage transport pipe. In addition, when the amount of sewage transported is substantially constant, the water storage tank, pump, and piping are substantially the same, so the average characteristic values are also substantially the same, and comparison is possible.

  As shown in FIG. 9, a control panel device 2001 in which control panels 201 and 202 including control units 211 and 212 are accommodated in the vicinity of the manholes 101 and 102 from upstream to downstream of the common sewage transport pipe 110. 2002 is installed. The configuration of the manhole pump devices 101 and 102 is the same as that of the manhole pump device 10 shown in FIG. 2 or FIG. 7, and the same reference numerals are given to the components that realize the same function.

  The control panels 201 and 202 are provided with control units 21a and 21b, storage units 22a and 22b, and communication units 24a and 24b, respectively. Similar to FIG. 8, the remote monitoring device 40 is configured by a general-purpose personal computer and includes functional blocks of a communication unit 41, a storage unit 42, a monitoring unit 43, and an abnormality determination unit 44. The configuration of the monitoring device 40 is the same as that described with reference to FIG.

  The control information of each manhole device 101, 102 is transmitted from the communication units 24a, 24b to the communication unit 41 provided in the monitoring device 40 and stored in the storage unit 42. The communication unit 41 also includes a transmission unit and a reception unit, and is configured to be capable of bidirectional communication with the manhole devices 101 and 102.

  The abnormality determination unit 44 calculates the average operation time from the most recent predetermined operation time of each of the pumps 14a, 16a, 14b, and 16b for each of the manhole pump devices 101 and 102, and compares both to determine the abnormality. In addition to performing a determination process, based on the comparison result of the average characteristic values of the pumps installed in the different manhole pump devices 101 and 102, the abnormality of the inherent system or common system of the pumps between the different manhole pump devices 101 and 102 Determine presence or absence.

  Specifically, the abnormality determination unit 44 calculates a difference between the average operation times of the latest four operation times of the pumps 14a and 16a or the pumps 14b and 16b, and the absolute value of the difference exceeds a predetermined difference threshold Tth. If it is, it is determined that an abnormality has occurred in the system unique to the pump having a long average operation time.

  And if the absolute value of the difference of both average operation time is below a predetermined | prescribed difference threshold value, the abnormality determination part 44 will determine that abnormality has not generate | occur | produced in the system | strain peculiar to each pump, and also each pump 14a, When the average operation time of 16a or pumps 14b and 16b is compared with a predetermined average operation time threshold AVTth, and the average operation time of each pump 14a, 16a or pump 14b or 16b exceeds a predetermined average operation time threshold Determines that an abnormality has occurred in the system common to the pumps 14a, 16a or the pumps 14b, 16b.

  In addition, the abnormality determination unit 44 calculates a difference between the average operation times of the four most recent operation times of the pumps 14a and 16b and / or the pumps 14b and 16a, and the absolute value of the difference exceeds a predetermined difference threshold Tth. If it is, it is determined that an abnormality has occurred in the system unique to the pump having a long average operation time.

  Further, the abnormality determination unit 44 calculates the difference between the average operation times of the four most recent operation times of the pumps 14a and 16b and / or the pumps 14b and 16a, and the average operation time of each pump is a predetermined average operation time. When the threshold value AVTth is exceeded, it is determined that an abnormality has occurred in a portion other than the pump-specific system of at least one sewage transfer pump device, that is, a common system.

  Furthermore, the abnormality determination unit 44 has an average operation time of each pump of the upstream or downstream manhole pump devices 101 and 102 that is less than a predetermined average operation time threshold AVTth, and the downstream or upstream manhole pump device. When the average operation time of each of the pumps 101 and 102 exceeds a predetermined average operation time threshold AVTth, the pump common system downstream from the start point (inlet piping to the water storage section) of the upstream pump common system It is determined that an abnormality has occurred in some common system up to the end point (outflow piping common to pumps).

  For example, the average operation time of each pump 14a, 16a of the upstream manhole pump device 101 is less than a predetermined average operation time threshold, and the average characteristic values of each pump 14b, 16b of the downstream manhole pump device 102 are both predetermined. If the average characteristic threshold is exceeded, unknown water is flowing somewhere between the two manhole pump devices 101, 102, or an abnormality such as water leakage or blockage has occurred in the system common to each pump on the downstream side. Can be determined.

  For example, the average operation times of the pumps 14b and 16b of the downstream manhole pump device 102 are both less than a predetermined average operation time threshold, and the average operation times of the pumps 14a and 16a of the upstream manhole pump device 101 are both predetermined. If the average operating time threshold is exceeded, it can be determined that an abnormality such as water leakage or blockage has occurred in the common system of the pumps 14a and 16a of the upstream manhole pump device 101.

  In this example, the average operation time of each of the two pumps in each manhole pump device is compared with the average operation time threshold. However, the average operation time of one pump in each manhole pump device is calculated as the average operation time threshold. May be compared. However, the accuracy of determination is improved by comparing both.

  As mentioned above, although the aspect which compares the average operation time of the pump installed in the two manhole pump apparatuses 101 and 102 installed along the common sewage conveyance pipe | tube 110 was demonstrated, it installed in three or more manhole pump apparatuses. The average operation time of the pumps may be compared with each other. For example, the abnormality determination may be performed by comparing the average operation times of the pumps installed in the three manhole pump devices 105, 106, and 107 installed along the common sewage transport pipe 112.

  For example, when there is no abnormality in the average operation time of both the upstream and downstream manhole pump devices 105 and 107, and the average operation time of both the intermediate manhole pump devices 106 is longer than the average operation time threshold Therefore, it can be determined that an abnormality has occurred in the common system of each pump of the intermediate manhole pump device 106. In this case, there is an abnormality in the pipeline of the common system, not the inflow of unknown water. Can be identified as occurring.

  For example, when there is no abnormality in the average operation time of both pumps of the upstream manhole pump device 105 and the average operation time of both pumps of the downstream manhole pump devices 106 and 107 is longer than the average operation time threshold. It is also possible to determine that unknown water is flowing between the manhole pump device 105 on the upstream side and the manhole pump device 106 on the downstream side.

Hereinafter, other embodiments of the present invention will be described.
In the above-described embodiment, each time the pump is operated once, the abnormality determination processing is executed based on the most recent predetermined number of average operation times. However, every time the pump is operated twice or more, the average of the most recent predetermined number of times. The abnormality determination process may be executed based on the operation time, or the abnormality determination process may be executed based on the most recent average operation time for each predetermined time period regardless of the operation of the pump. Furthermore, the manager of the manhole pump device can be set to execute at an arbitrary timing.

  In the above-described embodiment, both comparisons of pumps between different manhole pump devices and between the same manhole pump devices are performed, but the determination accuracy may be lowered, but the determination may be performed only by comparison between different manhole pump devices.

  In the embodiment described above, abnormality determination is performed using the latest four average operation times at the time of abnormality determination, but the latest average operation time of 5 times or less or 3 times or less is used according to the operation frequency of the pump or the like. May be. Further, as described above, the abnormality determination unit may compare the average operation time based on the ratio of the average operation time in addition to the difference in the average operation time. Furthermore, when comparing the differences, the absolute value may not be used, but may be compared with a threshold having a width of ±.

  As a characteristic value used for determining whether there is an abnormality, for example, a pump driving current can be used in addition to the pump operation time used in the above-described embodiment. In the case of a pump blockage, the load increases and the pump drive current increases. In the case of an air lock of the pump, the load is reduced and the pump drive current is reduced. Therefore, it is possible to appropriately determine the abnormality of the inherent system or common system of the pump. When measuring the pump drive current, in order to exclude the data at the time of pump startup when the current value is not stable, the current value measurement starts after a predetermined time has elapsed from the start of the pump until the pump is stopped. Sampling the values and taking the average as the characteristic value.

  Further, determination based on a plurality of types of characteristic values may be used in combination instead of determination based on only one type of characteristic value. For example, when the pump operation time and the pump drive current are used together, the pump operation time becomes longer due to clogging of the pump, inflow of unknown water, and water leakage due to pipe dredging, but the pump drive current is increased. Since it is only clogged, it is easier to identify the cause when an abnormality occurs than when judging only with one type of characteristic value.

  In addition, since the above-described abnormality determination process is to perform abnormality determination based on the time until the pump stop water level is reached after the pump is started, in preparation for the occurrence of an abnormality that does not reach the pump stop water level after the pump is started, An upper limit is set for the pump operation time per time, and when the pump stop water level LWL is not reached by the lapse of the upper limit time, it is determined that the air lock is abnormal, and the above abnormality determination process is interrupted. May be.

  In this case, it is preferable that the control unit is configured to stop the operation pump and switch to the standby pump, or to simultaneously operate with two pumps including the standby pump.

  In any of the above-described embodiments, the abnormality detection device of the present invention is installed in a manhole pump device provided with two pumps. For example, a sewage transport pump device in which three or more pumps are installed, such as a relay pump station. Also, the abnormality detection device of the present invention can be applied.

  Although the above-mentioned 1st-3rd embodiment was demonstrated separately, respectively, it can also implement in combination.

  Each of the above-described embodiments is an example of the present invention, and the technical scope of the present invention is not limited by the description. For the specific configuration of each part including a pump and a water level gauge, abnormality determination It goes without saying that the threshold value and the like to be set can be appropriately changed and designed within the range where the operational effects of the present invention are exhibited.

10: Sewage transport pump device (manhole pump device)
11: Inflow pipe 12: Reservoir (manhole)
13: Outflow pipe 14, 16: Pump 18, 19: Water level gauge 21: Control unit 22: Storage unit 23: Abnormality determination unit 24: Transmission unit (communication unit)
30: Abnormality detection device 40: Monitoring device 41: Reception unit (communication unit)
42: Storage unit 43: Monitoring unit 44: Abnormality determination unit

Claims (12)

A water storage section for storing sewage flowing in from the inflow pipe, a plurality of pumps for draining the sewage stored in the water storage section to the outflow pipe, a water level meter for measuring the level of sewage stored in the water storage section, When the water level measured by the water level gauge reaches the pump start water level, one of the pumps is started to drain the sewage into the outflow pipe, and when the water level reaches the pump stop water level, the sewage transfer control is executed to stop the pump. An abnormality detection device for a sewage transport pump device comprising a control unit,
Based on the comparison results of the average characteristic values of the respective pumps, the storage unit storing characteristic values during operation of each pump, and the average characteristic value per predetermined number of activations is calculated from the characteristic values stored in the storage unit. An abnormality detection device comprising: an abnormality determination unit that determines whether there is an abnormality in an inherent system or common system of pumps.   The abnormality detection according to claim 1, wherein the abnormality determination unit determines that an abnormality has occurred in a pump-specific system having a large average characteristic value when a difference between average characteristic values of the pumps exceeds a predetermined difference threshold. apparatus.   The abnormality detection device according to claim 2, wherein the abnormality determination unit outputs the abnormality determination information to the control unit when determining that an abnormality has occurred in any pump-specific system.   The abnormality determination unit according to any one of claims 1 to 3, wherein the abnormality determination unit determines that an abnormality has occurred in a system common to each pump when all of the average characteristic values of the pumps exceed a predetermined average characteristic threshold value. Anomaly detection device. A water storage section for storing sewage flowing in from the inflow pipe, a plurality of pumps for draining the sewage stored in the water storage section to the outflow pipe, a water level meter for measuring the level of sewage stored in the water storage section, When the water level measured by the water level gauge reaches the pump start water level, one of the pumps is started to drain the sewage into the outflow pipe, and when the water level reaches the pump stop water level, the sewage transfer control is executed to stop the pump. An abnormality detection device for a sewage transfer pump device installed in a plurality from the upstream to the downstream of a common sewage transfer pipe,
A storage unit that stores characteristic values during operation of each pump, and an average characteristic value per predetermined number of activations are calculated from the characteristic values stored in the storage unit, and each pump installed in a different sewage transport pump device An abnormality detection device comprising an abnormality determination unit that determines whether there is an abnormality in a unique system or a common system of pumps between different sewage transfer pump devices based on a comparison result of average characteristic values.   The abnormality determination unit determines that an abnormality has occurred in a pump-specific system having a large average characteristic value when the difference between the average characteristic values of the pumps between different sewage transfer pump devices exceeds a predetermined difference threshold value. The abnormality detection device according to claim 5.   The abnormality detection according to claim 6, wherein when the abnormality determination unit determines that an abnormality has occurred in any of the pump-specific systems, the abnormality detection information is output to the control unit of the sewage transfer pump device that has been determined to be abnormal. apparatus.   The abnormality determination unit according to any one of claims 5 to 7, wherein the abnormality determination unit determines that an abnormality has occurred in a system common to each pump when all of the average characteristic values of the pumps exceed a predetermined average characteristic threshold. Anomaly detection device.   The abnormality determining unit is configured such that the average characteristic value of each pump of one sewage transport pump apparatus is less than a predetermined average characteristic threshold value, and each pump of the sewage transport pump apparatus downstream or upstream of the one sewage transport pump apparatus When the average characteristic values of all exceed the predetermined average characteristic threshold, an abnormality has occurred in some common system from the start point of the common pump system on the upstream side to the end point of the common system line on the downstream side. The abnormality detection device according to claim 5, wherein the abnormality detection device is determined.   The abnormality detection device according to claim 1, wherein the characteristic value is a pump operation time or a pump drive current.   A sewage transfer pump device in which the abnormality detection device according to claim 1 is incorporated. A water storage section for storing sewage flowing in from the inflow pipe, a plurality of pumps for draining the sewage stored in the water storage section to the outflow pipe, a water level meter for measuring the level of sewage stored in the water storage section, When the water level measured by the water level gauge reaches the pump start water level, one of the pumps is started to drain the sewage into the outflow pipe, and when the water level reaches the pump stop water level, the sewage transfer control is executed to stop the pump. A sewage transport pump device including a control unit that performs control and a transmission unit that transmits control information from the control unit to the outside, and a reception unit that receives control information transmitted from the transmission unit. A monitoring device for monitoring the sewage transfer pump device based on the control information received at
The abnormality detection device according to any one of claims 1 to 10, wherein the characteristic value during operation of each pump included in the control information received by the reception unit is stored in the storage unit. Monitoring equipment.

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