JP7106378B2 - Valve operating characteristic information management device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a valve operation characteristic information management device that collects and manages operation characteristic information obtained with opening and closing operations of an operation target valve.

Many manually operated sluice and butterfly valves are incorporated into the water supply network. These valves play an important role for maintenance of the pipeline network or for emergency disaster response. Each valve has unique information such as valve control number, product name, type, nominal diameter, opening/closing direction, shut-off rotation speed, shut-off torque, etc. These unique information are made of acrylic resin material, aluminum material or laminated tag. and installed where it can be seen from the ground.

Manual sluice valves are generally used in a fully closed or fully open state, so they generally do not have an opening scale. The number of cases equipped with an opening meter is also increasing.

When an operator opens and closes a sluice valve or butterfly valve buried underground for the purpose of water distribution management or inspection, the opening scale of each valve and the information written on the tag can be visually checked from the operation opening of the manhole above ground. Although it is necessary to check, it may be difficult to see inside the manhole through the operation port if the opening scale or tag is dirty with mud or the interior is dark. If the opening/closing direction is misjudged, there is a risk of an erroneous operation such as actually operating in the closing direction while intending to open the plug.

In addition, these valves must be tightened with the required shut-off torque in order to generate the specified seal surface pressure in the fully closed state. In the case of a small-diameter valve, excessive torque acts and damages the valve.

In Patent Document 1, a tool or system is constructed to support confirmation work by a human system, reduce the burden on the operator, prevent nonconformity due to erroneous valve open/close judgments, and improve the efficiency and reliability of regular inspection work. A valve opening/closing monitoring device is disclosed for the purpose of

The valve opening/closing monitoring device includes torque detection means for detecting a torque value generated by tightening a handle of the manual valve, open/close determination means for determining the open/close state of the manual valve based on the torque value detected by the torque detection means, A display means for displaying the open/close determination result obtained by the open/close determination means and an operation instruction to the operator based on the open/close determination result is provided.

More specifically, the manual valve displays a code table for valve identification, and is equipped with an adapter for connecting a torque wrench, which is a portable valve opening/closing monitoring device. A portable terminal that is configured to open and close a manual valve by inserting a torque wrench into an adapter installed on the top of the valve stem, and that can display the tightening torque value of the manual valve to be operated in advance by reading the code from the code table. is used. A tightening torque value at the time of operation output from the torque wrench is read by the portable terminal, and compared with a predetermined torque determination value, it is possible to determine fully open or fully closed. A code table with two-dimensional code information such as a QR code (registered trademark) can be preferably used as the code table.

Patent Literature 2 discloses a valve operating device having an opening degree detection function in which an RFID (Radio Frequency-Identification) tag is placed on a valve, and information can be easily added or changed along with opening and closing operations of the valve.

The valve operating device is an operating device that opens and closes a valve with an RFID tag that can read and write information without contact, and has a boss on one end of the shaft that fits the operation cap of the valve stem An operation handle is provided on the other end of the shaft, an antenna arranged close to the RFID tag is provided on the boss, and a main unit for reading and writing information through the antenna is provided on the other end of the shaft. .

For example, an RFID tag is placed in the vicinity of the valve stem of a valve buried underground, and the RFID tag contains the valve opening degree, opening and closing direction (opening and closing direction of the valve stem required for operation), rotation speed, Information such as cut-off torque, information on pipelines before and after, information on surrounding buried objects, past work history, etc. are recorded as data.

When the boss of the actuator inserted from the ground toward the valve is fitted into the operation cap of the valve stem, the information recorded on the RFID tag is read to the main unit through the antenna, and the valve opening, opening/closing direction, and rotation are read out. Information such as the number and cut-off torque is displayed on the display section of the main unit, and the operator can visually confirm the information displayed on the display section.

The operator makes an appropriate judgment based on the information displayed on the display unit and turns the operation handle to rotate the valve stem to open and close the valve. After the operation, new valve opening data is recorded on the RFID tag from the main unit through the antenna, and the operation is completed by pulling out the operating device.

JP-A-10-299941 JP-A-2003-35380

According to the conventional technology described above, it is possible to accurately grasp the number of rotations of the valve shaft required for the opening and closing operation and the specification value of the shut-off torque.
However, even inexperienced operators cannot grasp the know-how peculiar to experts in opening and closing operations, such as the appropriate rotational speed and operation torque corresponding to the degree of opening of the valve in the process of opening and closing operations. There is room for further improvement from the viewpoint of enabling opening and closing operations.

In addition, for example, if the operator wants to perform the same operation as the previous inspection from the viewpoint of avoiding the occurrence of red water, an inexperienced operator cannot understand the specific operation procedure and operating conditions, so he has to deal with it each time. I didn't get it.

Furthermore, if the operating torque has changed since the previous operation, there is concern about sticking of the valve stem and wear of the threads. There was also the problem of not being able to notice it.

Therefore, there is a demand for a support device that allows even an inexperienced operator to appropriately open and close the valve.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a valve operating characteristic information management apparatus that allows even an inexperienced operator to appropriately open and close a valve.

In order to achieve the above object, the first characteristic configuration of the valve operation characteristic information management device according to the present invention is to collect and manage the operation characteristic information obtained along with the opening and closing operations of the valve to be operated. A characteristics information management device, which is provided in an operation tool for opening and closing the operation target valve, and operates the operation target valve including the rotation direction, rotation speed, and operation torque of a valve shaft operated via the operation tool. An operation characteristics measurement processing unit that measures characteristics in time series using a sensor, and an operation characteristics information input processing unit that inputs and processes the operation characteristics information measured by the operation characteristics measurement processing unit via a data input unit. an attribute information input processing unit for inputting and processing attribute information including identification information for individually identifying the operation target valve and operation details; and a rotation direction, rotation speed and operation of the valve shaft operated via the operation tool. Based on the operation characteristic information including torque, time-series operation characteristic trend information that associates the valve opening degree and rotational speed or operation torque of the operation target valve is generated, and the operation characteristic trend information is generated for the operation target valve. The present invention is provided with a history information generation processing unit that generates history information associated with characteristic trend information, and a recording processing unit that records the history information generated by the history information generation processing unit.

When the valve to be operated is opened and closed using the operating tool, the operation of the valve to be operated including the rotational direction of the valve shaft (opening/closing direction of the valve), the rotational speed, and the operating torque is performed by the operation characteristic measurement processing unit provided in the operating tool. The characteristics are measured in time series, and the measured operation characteristic information is input through the data input unit and processed by the operation characteristic information input processing unit. Attribute information including identification information for individually identifying the operation target valve and operation details is input by the attribute information input processing unit. Based on the operation characteristic information, the history information generation processing unit generates time-series operation characteristic trend information that associates the valve opening and the rotation speed or operation torque of the valve to be operated, and also generates the operation characteristic trend information. History information associated with the attribute information is generated, and the history information generated by the history information generation processing unit is recorded by the recording processing unit. The history information recorded in this way can be effectively used as teaching data when an operator with a low skill level opens and closes the valve.

In addition to the above-described first characteristic configuration, the second characteristic configuration can compare the operation characteristic trend information with the reference characteristic information, which is the expert's operation characteristic trend information stored in the recording processing unit. The characteristic information comparison part is provided for displaying the

By operating the operation tool based on the comparison result displayed by the characteristic information comparison unit, even an operator with little skill can open and close the valve with the operation characteristic corresponding to the reference characteristic information. .

In addition to the above-described second characteristic configuration, the third characteristic configuration is that the characteristic information comparison unit determines whether or not the operation characteristic information is maintained within a predetermined allowable range based on the reference characteristic information. is monitored, and when the operation characteristic information deviates from the allowable range, notification processing is executed to notify the operator of the fact in a recognizable manner.

When the operation characteristic information deviates from the allowable range, a notification process is executed to notify the operator to that effect, and when the operator recognizes it, the degree of opening and closing operation of the valve using the operation tool can be adjusted in real time. Become.

The fourth characteristic configuration is, in addition to any one of the above -described first to third characteristic configurations, the operation characteristic information input processing unit, from the operation characteristic information, The point is that it is configured to perform a filtering process that removes information at the time of operation.

The rotation direction, rotation speed and operation torque of the valve shaft are preferably used as the operation characteristic information. Normally, it is difficult for the operator to continuously rotate the valve shaft via the operating tool. In such a case, the filter processing executed by the operation characteristic information input processing unit removes information during non-operations associated with intermittent operation of the operation tool as noise from the operation characteristic information.

In the fifth feature configuration, in addition to the above -mentioned fourth feature configuration, the operation characteristic information input processing unit is configured to interpolate the information missing due to the filtering process based on the preceding and succeeding operation characteristic information. in that it is

Continuous data is obtained by interpolating the missing information by the filtering process based on the preceding and succeeding operation characteristic information.

In the sixth characteristic configuration, in addition to the fifth characteristic configuration described above , the operation characteristic information input processing section interpolates the missing information due to the filtering process using an interpolation method or a moving average. in that it is configured.

High-precision interpolated data can be obtained by interpolating using an interpolation method or a moving average.

The seventh characteristic configuration, in addition to any one of the first to sixth characteristic configurations, specifies the operator of the operation target valve in the attribute information input and processed by the attribute information input processing unit. The point is that the operator information is included.

If the attribute information includes operator information specifying the operator of the valve to be operated, the reliability of the operation characteristic trend information can be evaluated based on the operator information. For example, if the operation characteristic trend information is operated by a highly skilled operator, it can be evaluated as having high reliability as teacher data.

The eighth characteristic configuration is that, in addition to any one of the first to seventh characteristic configurations, operation purpose information is included in the attribute information input and processed by the attribute information input processing section.

Even if the valve to be operated is the same, the operation procedure differs if the operation purpose such as inspection or water distribution management is different. will be different. Even in such a case, appropriate operation characteristic information can be selected based on the operation purpose information included in the attribute information.

The ninth characteristic configuration is, in addition to any one of the first to eighth characteristic configurations, the recording processing unit stores the history information in a database server for managing operation characteristics information via a wireless communication interface. There is a point to do.

Since the history information is stored in the database server for operation characteristics information management via the wireless communication interface, the history information for the operation target valve operated on site can be stored in the database server on the spot. , workability is improved.

The tenth characteristic configuration is that, in addition to the above -described ninth characteristic configuration, the database server is a database server that constitutes a pipe network mapping system.

The database provided in the pipe network mapping system manages installation positions, unique identification information, installation time, and specification values of pipe network components such as pipes and valve plugs. Since the reference property information and the operation property information stored as history information at the time of past operation can be used as the reference property information, the valve can be efficiently managed.

As described above, according to the present invention, it is possible to provide a valve operation characteristic information management apparatus that allows even an unskilled operator to appropriately perform opening and closing operations of the valve.

Explanatory drawing of valve operation characteristic information management device and operation guidance device (a) and (b) are explanatory diagrams of the valves to be operated Functional block configuration diagram of valve operation characteristic information management device and operation guidance device (a), (b), and (c) are explanatory diagrams of a valve operation guide device. (a) is an explanatory diagram of the operation characteristics of a valve operated by an expert when there is an in-pipe flow, and (b) is an explanatory diagram of the operation characteristics of a valve operated by an expert when there is no in-pipe flow. (a) is an explanatory diagram of the operation characteristics of a valve operated by an inexperienced operator, and (b) is an explanatory diagram of the operation characteristics of a valve operated by a skilled operator. Explanatory diagram of valve attribute data and history information of operation characteristics Explanatory diagram of filter processing and interpolation processing flowchart

Below, a manual valve provided in a water supply network facility is taken as an example, and a valve operation characteristics information management device and a valve operation guidance device using the operation characteristics information management device, which are examples of the present invention, are incorporated. A valve operation support system will be described.

FIG. 1 shows a schematic configuration of a valve operation support system 1, and FIG. 3 shows a functional block configuration of the valve operation support system 1. As shown in FIG. The operation support system 1 includes an operation characteristic information input device 10 , an operation guidance device 20 , and a water supply pipe network mapping system 100 . The operation guidance device 20 is composed of a portable information terminal device such as a smart phone or a tablet.

The operation characteristic information input device 10 and the operation guidance device 20 are connected so as to be able to communicate via a short-range wireless communication interface (IEEE 802.15.1 standard) such as Bluetooth (registered trademark). The network mapping system 100 is configured to be connectable to the Internet via a wireless communication interface (IEEE 802.11 standard) such as a mobile phone network or Wi-Fi (registered trademark). Note that these communication standards are merely examples, and are not limited to these communication standards as long as they are configured to be able to communicate with each other.

The operation characteristic information input device 10 is attached to a rod-shaped operation tool 16 for opening and closing an operation target valve 40 incorporated in a water distribution pipe 50 of water supply equipment. The operated valve 40 is a manual valve such as a sluice valve or a butterfly valve arranged in a manhole, and is configured to be opened and closed by inserting an operating tool 16 into the manhole from the ground.

FIG. 2(a) shows a soft seal valve 40A, which is an example of a gate valve. The soft seal valve 40A has an open state in which the valve body 42A housed in the valve box 41A is raised and lowered by rotation of a valve stem 43A having a threaded portion around the periphery thereof, and an open state in which the valve body 42A moves upward. It is a valve that switches to a closed state moved downward, and the valve body 42A is made of EPDM with excellent chlorine resistance, and is a valve that can obtain a high water stopping effect. A substantially rectangular parallelepiped cap 45A is arranged on the upper end side of the valve stem 43A extending upward through the bush 44A. A metal seal valve in which the valve body 42A is made of metal may be used as the gate valve in addition to the soft seal valve 40A.

FIG. 2(b) shows the butterfly valve 40B. The butterfly valve 40B rotates the valve body 42B housed in the valve body 41B by rotating the valve stem 43, thereby opening the valve body 42B in a parallel posture with respect to the water flow, and opening the valve body 42B in a posture perpendicular to the water flow. It is a valve that switches between a closed state and a closed state, and is a valve that can adjust the flow rate by adjusting the crossing angle with respect to the water flow. A substantially rectangular parallelepiped cap 45B is arranged on the upper end side of the valve stem 43B extending upward through the bush 44B. A reduction gear mechanism may be interposed on the upper end side of the valve stem 43B extending upward through the bush 44B, and the cap 45B may be arranged on the input shaft side of the reduction gear mechanism. The valve stems 43A and 43B serve as valve shafts for both valves.

Returning to FIG. 1, the description continues. A boss portion 17 fitted to the cap 45 (45A, 45B) of the valve 40 (40A, 40B) to be operated is provided at the lower end portion of the rod-shaped operating tool 16, and a handle portion 18 for opening and closing operation is provided at the upper end portion. is provided. A position sensor 11 and a torque sensor 12 are attached directly below the handle portion 18, and a signal processing portion 14 is locked in the vicinity thereof. The boss portion 17 is formed with a cavity having a rectangular cross section with an inner diameter slightly larger than the outer diameter of the cap 45 (45A, 45B).

As the position sensor 11, a gyro sensor or encoder that outputs an electric signal corresponding to the rotation speed and rotation angle of the operation tool 16 is used, and as the torque sensor 12, a strain gauge that converts the amount of twist corresponding to the torque of the operation tool 16 into a voltage. is used.

The boss portion 17 is fitted to the cap 45 (45A, 45B) of the operation target valve 40, and the operation target valve 40 is opened and closed by gripping the handle portion 18 and rotating the operating tool 16 around its axis. At that time, the torque sensor 12 measures the torque of the valve shaft, and the position sensor 11 measures the rotation operation speed of the valve shaft.

As shown in FIG. 3, the operation characteristic information input device 10 is incorporated in the operation tool 16 (see FIG. 1) and includes the position sensor 11 and torque sensor 12, the signal processing section 14, and the communication interface 15 described above. A signal indicating the operation characteristics of the valve detected by the position sensor 11 and the torque sensor 12 is input to the signal processing unit 14, and the signal processing unit 14 performs signal amplification processing, A/D conversion processing, and numerical calculation processing as necessary. is performed to generate the operating characteristic information, which is stored in the internal memory. The operation characteristic information stored in the internal memory is transmitted to the operation guidance device 20 at predetermined intervals via the communication interface 15 for short-range wireless communication.

The operation guidance device 20 includes a computing unit 21 composed of a CPU, a storage unit 22 having a flash ROM in which an operating system, application programs, various data, etc. are stored, a RAM used as a working area, and a touch panel display. A notification unit 24 having a sound module and a vibrator (vibrator), a first communication interface 25 used for communication with the operation characteristics information input device 10, and a second communication used for communication with the pipe network mapping system 100. An interface 26 and the like are provided.

The application program stored in the storage unit 22 and used to assist the operation of the valve is executed by the CPU, thereby implementing the calculation unit 21 having various functional blocks. That is, the calculation unit 21 includes an operation characteristic information input processing unit 21A, an attribute information input processing unit 21B, a history information generation processing unit 21C, a reference information storage processing unit 21D, a characteristic information comparison unit (display processing unit) 21E, and a data output unit. Various functional blocks of the processing unit 21F are included. Details of these functional blocks will be described later.

The pipe network mapping system 100 includes a pipe network mapping management server 110 that manages pipe map information of water supply facilities and a pipe network mapping database 120 .

The pipe network mapping database 120 stores a plurality of pipe map information in which installation routes of various underground water distribution pipes, water supply pipes, etc. are divided and drawn for each region, and constitutes a pipe map. It stores component information that specifies components such as each water pipe, water supply pipe, valve, and plug. In the piping map information, each installation route is subdivided for each part and associated with corresponding part information. Information on these parts is automatically input via a scanner that reads code information such as a QR code (registered trademark) attached to each part at the time of installation.

The part information is tabulated for each type of pipe, valve, plug, or the like, a serial number is assigned to each part, and installation position, installation date, and attribute information are managed. Attribute information includes nominal diameter, model, pipe type, manufacturing number, date of manufacture, and manufacturing plant for pipes, and nominal diameter, model, valve type, manufacturing number, and manufacturing date for valves. Date, manufacturing plant, and in the case of a manual valve, the number of rotations of the valve stem from fully closed to fully opened, opening and closing direction, etc. are included.

When accessing the pipe network mapping management server 110 using the operation guide device 20 to search for a specific part, for example, a specific position on the installation route, for example, the position of the corresponding part on the route, is specified. Pipes and valves can be extracted. For example, by searching with specific data such as the serial number, installation position, and manufacturing number of the part, the corresponding pipe, valve, plug, and other part information can be extracted.

In addition, among the component information, regarding functional components for adjusting the water distribution state, such as valves that need to be opened and closed for water distribution control and valves that require inspection, the date of operation, purpose of operation, Operation information including an operation state and an operator is added, and operation characteristic information, which will be described in detail later, is stored as history information associated with the operation information.

FIG. 7 shows the configuration of valve attribute information and the configuration of valve operation characteristic information (history information) stored in the pipe network mapping database 120 . A valve is uniquely identified based on attribute information such as a serial number, manufacturing number, or burial position that is uniquely identified by the pipe network mapping information.

In the operation information, operation purpose, operation state, operator, environmental data, and operation characteristic information link data are set for each operation date. In the case of a manual valve, the operating state includes fully open, fully closed, or valve opening, and the operating purpose includes regular inspection work, water stoppage adjustment work accompanying construction work, water distribution adjustment work, and pipe cleaning work.

Therefore, the latest state of the valve can be grasped from the operation state corresponding to the latest operation date included in the operation history. Note that skill level information may be provided in place of the operator or in addition to the operator. For example, five levels of skill level information from beginner 1 to expert 5 can be set. The environmental data includes pipe flow velocity, years of operation, and so on.

Further, the pipe network mapping database 120 stores operation characteristic information at the time of operation for each operation date as history information, and is configured so that desired operation characteristic information can be specified based on the operation history information link data. there is

When operating the above-described manual valve according to the purpose of operation, the valve operation guide device 20 is provided so that even an inexperienced operator can operate the valve to the same extent as a highly skilled operator. Built. That is, the valve operation guidance device 20 is a device that presents operation guidance information to an operator who opens and closes the operation target valve 40 using the operation tool 16 described above. It is configured to present operation guidance information.

As shown in FIG. 3, the operation guidance device 20 receives the operation characteristic information measured by the sensors 11 and 12 provided on the operation tool 16 and subjected to signal processing by the signal processing unit 14 to a short-range wireless communication device functioning as a data input unit. An operation characteristic information input processing unit 21A that performs input processing via the first communication interface 25 for communication, a reference information storage processing unit 21D that stores and processes reference characteristic information to be compared with the operation characteristic information in the storage unit 22, and an operation tool. and a characteristic information comparison section 21E capable of comparing the reference characteristic information and the operational characteristic information based on the operational characteristic information input from the data input section 25 in time series according to the operation of 16 . The characteristic information comparing section 21E is provided with a display processing section that generates a trend graph of the operation characteristic information that can be compared with the reference characteristic information and displays the generated trend graph on the display section 23 .

The support procedure of the valve operation support system will be described below with reference to the flowchart shown in FIG.
When the operator touches the touch panel type display unit 23 of the operation guidance device 20 to start an application program for supporting the operation of the valve, the attribute information input processing unit 21B is activated and measurement preparation processing is started. is executed (step S1).

First, communication is performed with the operating characteristics information input device 10 via the first communication interface 25, and the sensors 11 and 12 provided in the operating characteristics information input device 10 are selected via the sensor selection screen displayed on the display unit 23. manipulated. In this state, it becomes possible to communicate with the signal processing unit 14 via the communication interface 15 (step S2).

Subsequently, a screen for inputting the date of operation, which is the work date, and an ID information input screen for identifying the operator are displayed. When these inputs are completed, a screen for specifying the valve to be operated is displayed. Any one of the following modes is adopted as a mode for designating the valve to be operated.

A configuration in which a valve to be operated is specified by photographing a two-dimensional bar code 42 arranged on the valve 40 as shown in FIG.
Information including valve identification information written in an RFID tag (an RFID tag as described in Patent Document 2) previously installed in the valve 40 is sent to the signal processing unit via an antenna provided in the operation tool 16. 14 reads and transmits to the operation guide device 20 to specify the valve to be operated.
The position information detected by the GPS receiver incorporated in the operation guidance device 20 is transmitted to the pipe network mapping system 100 via the second communication interface 26, and the pipe network mapping system 100 finds the position closest to the position information. In this mode, the valve to be operated is specified by specifying the installed valve as the valve to be operated 40 and transmitting the information to the operation guidance device 20 .

Next, a selection screen for the operation purpose for the operation target valve 40 is displayed. Options such as periodic inspection work, water stopping adjustment work associated with construction work, water distribution adjustment work, and pipe cleaning work are displayed, and the operation purpose is set by touching any of them (step S3).

Next, the reference information storage processing unit 21D operates, and the operation criteria for the operation target valve 40 stored in the pipe network mapping database 120 via the pipe network mapping management server 110 connected via the second communication interface 26 are calculated. Characteristic information or operation characteristic information stored as history information at the time of past operations is downloaded as reference characteristic information and stored in the storage unit 22 (step S4).

When the above processing is finished, the operation of the operation target valve 40 is shifted to a measurable state. When the signal processing unit 14 receives a measurement start command from the operation guidance device 20 via the communication interface 15, the signal is detected by the position sensor 11 and the torque sensor 12 at predetermined time intervals (for example, intervals of several tens of milliseconds). A signal is input, and the signal value is stored in a built-in storage unit together with time information. Then, operation characteristic information is calculated from the time information and the signal value stored in the storage unit (step S5).

From the signal value and time information from the position sensor 11, time-series information of the rotation speed of the operation tool 16 by the operation of the handle portion 18 by the operator, that is, the rotation operation speed of the valve stem is obtained. Time series information of the rotational position of the shaft is obtained. By associating the signal value from the torque sensor 12 with the signal value from the position sensor 11 via time information, time-series information of the torque of the operating tool 16 corresponding to the rotational position of the valve shaft, that is, the torque of the valve shaft can be obtained. The time-series information is stored in the storage unit of the signal processing unit 14 , and the time-series information stored in the storage unit is transmitted to the operation guidance device 20 via the communication interface 15 .

The operation characteristic information input processing unit 21A calculates the valve opening from the cumulative value of the rotational position information included in the time-series information input via the first communication interface 25, and calculates the valve opening as the operation characteristic information. Obtain the associated rotation speed and torque. That is, the number of revolutions included in the attribute information of the valve described above with reference to FIG. Based on the number of revolutions, the valve opening degree at that time between 0% (fully closed) and 100% (fully opened) is obtained (step S6).

FIGS. 5(a) and 5(b) show the torque characteristic corresponding to the valve opening, which is one of the operation characteristic information processed by the operation characteristic information input processing section 21A. FIG. 5(a) shows the characteristics when a highly skilled operator operates the operation tool 16 when the flow velocity in the pipe is 2.0 m/s (when there is flow), and FIG. This is the characteristic when a highly skilled operator operates the operating tool 16 when the flow velocity is 0.0 m/s (no flow).

In the figure, the left end is the fully open position and the right end is the fully closed position. The characteristic indicated by the solid line is the torque characteristic corresponding to the valve opening when closing from the fully open position to the fully closed position, and the characteristic indicated by the dashed line is the torque characteristic corresponding to the valve opening when the valve is opened from the fully closed position to the fully open position. Corresponding torque characteristics are shown.

From FIGS. 5A and 5B, it can be seen that the torque characteristic pulsates in response to the operation of the handle portion 18 by the operator. The torque becomes zero when the operation of the handle portion 18 is stopped, and the torque is detected during the operation. Since the torque value is positive in the closing operation and negative in the opening operation, the operation direction of the valve and the operation timing of the handle portion 18 can be discriminated by the positive/negative sign. Further, it is understood that the force applied to the valve body is different between when water is flowing in the pipe and when there is no water flow, and the torque acting on the valve shaft is also different.

In this example, the maximum allowable torque (shutoff torque) at the time of full closing and full opening is set to about 100 N-m at maximum. Therefore, there is a risk that the valve will be damaged if it is tightened with a greater operating torque than that. Also, if the operating torque is much lower than 100 N-m, leakage may occur. By operating the operating tool 16 while the operator visually observes such torque characteristics, it becomes possible to tighten with an appropriate torque.

FIGS. 6A and 6B similarly show torque characteristics corresponding to the valve opening, which is one piece of operation characteristic information processed by the operation characteristic information input processing section 21A. FIG. 6A shows the characteristics when an inexperienced operator operates the operating tool 16, and FIG. 6B shows the characteristics when a highly skilled operator operates the operating tool 16. FIG.

In FIG. 6(b), the operating torque when fully closed and fully opened is adjusted to approximately 100 N-m, and the operating torque stabilizes at about 20 to 30 N-m at the valve opening degree between fully closed and fully open. It can be seen that it is operated by

On the other hand, in FIG. 6(a), the operating torque when fully closed is much lower than 100 N-m, and there is a risk of leakage, and the operating torque when fully open exceeds 100 N-m, resulting in damage. It can be seen that there is a risk of causing Furthermore, it can be seen that the operation torque fluctuates greatly at an intermediate valve opening degree between fully closed and fully opened, indicating that the valve is operated in an unstable manner. It is desired that the valve be operated with a stable constant operation torque without being operated with a large operation torque at an intermediate opening degree excluding the vicinity of the fully closed position and the vicinity of the fully open position.

As operation characteristic information, not only the torque characteristic corresponding to the valve opening degree but also the operation speed characteristic corresponding to the valve opening degree and the like are important. When the valve opening is near the fully closed position or near the fully open position, it is necessary to reduce the operation speed and operate the valve to the fully open or fully closed position so that the target operation torque is achieved. When opening, it should also be operated gently to avoid the formation of red water. Further, at intermediate openings except near the fully closed position and near the fully open position, the operation time can be shortened by performing rapid operation at a high operating speed while maintaining a stable and constant torque.

4A, 4B, and 4C show trend graphs of the operation characteristic information displayed on the display unit 23 by the display processing unit provided in the characteristic information comparison unit 21E. The trend graph shows the valve opening-torque characteristic and the valve opening-operation speed characteristic, in which the reference characteristic information is indicated by a broken line and the operation characteristic information by the operator is indicated by a solid line. From the trend graph, it is possible to grasp the tendency of the torque characteristic and the operation speed characteristic with respect to the valve opening that changes in time series.

An operator who sees the trend graph showing the rotation speed against the valve opening degree operates the operation tool 16 so that the operation characteristic information follows the reference characteristic information. It becomes possible to adjust the rotational speed in the intermediate region. In addition, an operator who visually observes the trend graph showing the operation torque with respect to the valve opening can operate the operation tool 16 with an appropriate operation torque according to the opening. It becomes possible to tighten with an appropriate cut-off torque to generate.

In summary, the operation characteristics of the valve 40 detected by the sensors 11 and 12 provided in the operation tool 16 in the process of opening and closing the valve 40 using the operation tool 16 by the operator are used as the operation characteristic information via the data input unit 25 . are sequentially input to the operation guidance device 20, and input processing is performed by the operation characteristic information input processing unit 21A.

In the storage unit 22 provided in the operation guidance device 20, reference characteristic information to be compared with the operation characteristic information is stored in advance by the reference information storage processing unit 21D. A trend graph that can be compared with the reference characteristic information is generated by the display processing unit (characteristic information comparing unit 21E) based on the operation characteristic information input from the data input unit 25 in time series, and the trend graph is displayed on the display unit 23. is displayed (step S6).

For example, if the operation tool 16 is operated while checking the trend graph displayed on the display unit so that the operation characteristic information has the same value as the reference characteristic information, even an unskilled operator can obtain the reference characteristic. The valve can be opened and closed with operation characteristics corresponding to the information. The reference characteristic information functions as teacher data.

When the reference information storage processing unit 21D downloads the operation characteristic information (history information) for the operation target valve 40 stored in the pipe network mapping database 120 via the pipe network mapping management server 110 as the reference characteristic information, the history Based on the skill level information included in the information, history information of operations by a highly skilled operator is configured to be acquired as the reference characteristic information. Therefore, as the reference characteristic information, preset operation reference characteristic information such as a specification value for the valve to be operated, or operation characteristic information by a past expert can be preferably used.

The display processing unit (characteristic information comparison unit 21E) monitors whether or not the operation characteristic information is maintained within a preset allowable range based on the reference characteristic information. By executing notification processing for recognizably notifying the operator, the operator can recognize the operation status and adjust the degree of opening and closing operation of the valve 40 using the operation tool 16 in real time. (steps S8, S9, S10).

The notification process refers to a process of making the operator perceive using one or more of acoustic information, vibration information, and display color information. For example, the mode of notification processing can be changed depending on whether the operating characteristic information is within the allowable range, slightly deviates from it, or greatly deviates from it.

It is possible to adopt a form of acoustic information in which there is no sound when the operation characteristic information is within the allowable range, intermittent sound when it deviates slightly, and continuous sound when it deviates greatly, and the operation characteristic information is acceptable. It is possible to adopt a form of vibration information such as no vibration when it is within the range, intermittent vibration when it deviates slightly, and continuous vibration when it deviates greatly. It is possible to employ a mode of display colors such that green is displayed on the display unit 23 when there is a deviation, yellow is displayed when there is a slight deviation, and red is displayed when there is a large deviation.

In addition, acoustic information can adopt a mode in which timbre, volume, etc. are varied, and vibration information can adopt a mode in which vibration amplitude is varied, and each mode can be combined.

In FIG. 4(a), both the valve opening-torque characteristic and the valve opening-operation speed characteristic are within the allowable range, and the notification process displayed on the display unit 23 is displayed in green (inside the black circle in the figure). (indicated by symbol G).

In FIG. 4(b), the valve opening-torque characteristic slightly deviates from the allowable range (the part surrounded by the dashed circle in the figure), and the notification process displayed on the display unit 23 is displayed in yellow. (indicated by symbol Y inside the black circle in the figure).

In FIG. 4(c), the valve opening-torque characteristic deviates greatly from the allowable range (the part surrounded by the dashed circle in the figure), and the notification process displayed on the display unit 23 is displayed in red ( In the figure, it is switched to R) inside the black circle.

In this manner, when the operation target valve 40 is opened and closed, if the displayed operation characteristic information does not conform to the reference characteristic information no matter how the operation tool 16 is operated, the valve is opened and closed. An abnormality is diagnosed (step S11), and preset abnormal state processing is executed (step S12).

For example, even though the valve opening-operation speed characteristics are appropriate, the valve opening-torque characteristics deviate greatly from the reference characteristics information, or the cut-off torque does not match the cut-off torque of the reference characteristics information. When a preset abnormality condition is satisfied, such as when the notification does not arrive, the notification processing unit determines that there is an abnormality, and the display unit 23 displays a message to that effect. When the operator confirms the display, the operator notifies the administrator of the fact, and returns the valve to the initial state of the opening/closing operation as an emergency measure.

The operation characteristic information input processing unit 21A is configured to perform filtering for removing information during non-operation associated with intermittent operation of the operation tool 16 from the operation characteristic information as shown in FIGS. The missing information is interpolated based on the preceding and succeeding operation characteristic information. Therefore, the valve opening-torque characteristics shown in FIGS. 4A to 4C differ from the pulsation characteristics of the valve opening-torque characteristics described with reference to FIGS.

Normally, it is difficult for the operator to continuously rotate the valve shaft via the operating tool 16. For example, when changing the grip of the handle portion 18 of the operating tool 16, the rotating operation is temporarily stopped. In such a case, filter processing removes information during non-operation associated with intermittent operation of the operation tool 16 as noise from the operation characteristic information, and the missing information due to filter processing is interpolated based on the preceding and succeeding operation characteristic information. be.

As the filter processing, differential filter processing can be adopted that removes data whose differential value of time-series data deviates from a predetermined threshold. A linear interpolation method or the like that interpolates using a moving average of data before and after the data obtained can be preferably used.

In the upper part of FIG. 8, operation characteristic information (indicated by a solid line) obtained by performing differential filter processing to remove information during non-operation from the operation characteristic information (indicated by a broken line), which is time-series data. is exemplified, and the lower part of FIG. 8 illustrates the operation characteristic information (indicated by the solid line) after the operation characteristic information missing by the filtering process is complemented by the interpolation process.

The reference information storage processing unit 21D will be supplemented.
The reference information storage processing unit 21D stores the operation reference characteristic information of the valve to be operated 40 and the operation characteristic information by the past expert in the pipe network mapping database 120 connected via the communication network in order to adopt the operation characteristic information as the reference characteristic information. An example of downloading the corresponding operation characteristic information from the stored operation characteristic information (history information) of the valve has been described, but as shown in FIG. Any operational characteristic information can be downloaded.

Even if the valve to be operated is the same, the operation procedure differs if the operation purpose such as inspection or water distribution management is different. will be different. Even in such a case, it is possible to select appropriate operation characteristics information based on the operation purpose information (regular inspection work, water stoppage adjustment work accompanying construction work, water distribution adjustment work, pipe cleaning work, etc.) included in the attribute information. become able to.

It is configured to acquire, as reference characteristic information, operation characteristic information stored as history information at the time of past operation or operation reference characteristic information for the operation target valve of the same valve type, and to store it in the storage unit 22. , the operation reference characteristic information or the operation characteristic information at the time of past operation for the operation target valve of the same type as the operation target valve stored in the database 120 can be preferably used as the reference characteristic information.

For example, even if a plurality of pieces of operation characteristic information included in the history information of the operation target valve includes operation characteristic information for a desired operation purpose, if there is no operation characteristic information for a desired pipe flow velocity, the operation target valve and the model When there is operation characteristic information of a desired in-pipe flow velocity for a desired operation purpose in the operation characteristic information of the same operation target valve, the operation characteristic information can be utilized as reference characteristic information.

The reference information storage processing unit 21D is configured to acquire the history information of the same environmental information as the current time as reference characteristic information based on the environmental information (pipe flow velocity, years of operation, etc.) included in the history information. By using the same environmental information history information as this time as the reference characteristic information, it is possible to appropriately open and close the appropriate operation target valve.

It is preferable that the reference information storage processing unit 21D is configured to preferentially acquire the history information of the environment information close to the current environment information as the reference characteristic information based on the environment information included in the history information. Even if the same environmental information history information as this time does not exist, by prioritizing the environmental information history information close to the current environment information and using it as the reference characteristic information, it is possible to appropriately open and close the appropriate operation target valve. become able to.

In other words, the reference information storage processing unit 21D stores the current opening/closing operation of the valve in the operation characteristic information of the operation target valve among the operation characteristic information (history information) of the plurality of valves stored in the pipe network mapping database 120. If there is no operation characteristic information that can be used as training data for the conditions for the current opening and closing operation of the valve, the operation characteristic information of other valves is selected. Among them, it is configured to preferentially select the operation characteristic information of the condition closest to the condition for the current opening/closing operation of the valve.

The operation guidance device 20 further includes a data output processing unit that uploads the operation characteristic information input and processed by the operation characteristic information input processing unit 21A as the operation characteristic history information to the pipe network mapping database 120 connected via the communication network. It has 21F.

By uploading the operation characteristic information input and processed by the operation characteristic information input processing unit 21A as the operation characteristic history information to the pipe network mapping database 120 by the data output processing unit 21F, it can be used as reference attribute information for the next opening/closing operation. (Step S13).

Note that a dedicated operation characteristics history information database may be constructed instead of the pipe network mapping database 120 . Also in this case. The attribute information as shown in FIG. 7 may be used for management.

A valve operation characteristic information management device that collects and manages operation characteristic information obtained with opening and closing operations of the operation target valve 40 will be described below in detail. The operation characteristics information management device is incorporated in the valve operation support system 1 and is composed of part of the functional blocks of the operation characteristics information input device 10 and the operation guidance device 20 described above.

Specifically, the operation characteristic information management device is provided in the operation tool 16 for opening and closing the operation target valve 40, and is an operation target including the rotation direction, rotation speed, and operation torque of the valve shaft operated via the operation tool 16. an operation characteristic measurement processing unit 14 that measures the operation characteristics of the valve 40; an operation characteristic information input processing unit 21A that inputs and processes the operation characteristic information measured by the operation characteristic measurement processing unit 14 via a data input unit 25; An attribute information input processing unit 21B for inputting and processing attribute information including identification information and operation details for individually identifying the operation target valve 40; Based on the operation characteristic information including, the operation characteristic trend information that associates the valve opening degree and the rotation speed or the operation torque of the operation target valve 40 is generated, and the history that associates the operation characteristic trend information with the operation target valve 40 It includes a history information generation processing unit 21C that generates information, and a data output processing unit 21F as a recording processing unit that records the history information generated by the history information generation processing unit 21C.

As already explained, in the attribute information input processing section 21B, attribute information relating to valve operation such as identification information of the operation target valve 40, date of operation, ID information for specifying the operator, and purpose of operation is input.

Further, the signal processing unit 14 incorporated in the operation characteristic information input device 10 constitutes an operation characteristic measurement processing unit.

The operation characteristic trend information generated by the history information generation processing unit 21C is information indicated by solid lines in the valve opening-torque characteristics and the valve opening-operation speed characteristics in FIGS. , which is substantially the operation characteristic information that has been input by the operation characteristic information input processing unit 21A and has been filtered and interpolated.

The history information generation processing unit 21C identifies history information in which operation characteristic trend information (operation characteristic information) is associated with the operation target valve 40, specifically, identification information, operation date, and operator of the operation target valve 40. History information is generated in which attribute information related to valve operation such as ID information and operation purpose is associated with operation characteristic trend information.

Then, the history information generated by the history information generation processing unit 21C is stored in the network mapping database 120 via the second communication interface 26 by the data output processing unit 21F.

The history information recorded in this manner is read by the reference information storage processing section 21D and effectively used as teaching data when an operator with a low skill level opens and closes the valve.

Although an example in which the recording processing unit is configured by the data output processing unit 21F has been described, the storage processing unit may be configured to store the history information in the storage unit 22 of the operation guidance device 20, or the storage processing unit may comprise a data output processing unit that transmits historical information to a database dedicated to valve management.

Another embodiment will be described below.
As the position sensor 11 incorporated in the operation tool 16, any sensor capable of detecting the rotation speed or rotation angle of the operation tool 16, such as a Hall element, can be used in addition to the gyro sensor and the encoder.

A water flow meter is installed in the valve to detect the water flow in the pipe, the output of the water flow meter is configured to be input to the signal processing unit 14 of the operation characteristic information input device 10, and the flow velocity in the pipe when fully open is calculated. It can be configured to capture as environmental data. An ultrasonic water flow meter can be preferably used as the water flow meter.

In the above-described embodiment, the operating tool 16 for opening and closing the valve is a rod-shaped operating tool. However, the shape of the operating tool 16 is not limited to a rod-like one. I wish I had.

In the above-described embodiment, an example in which the operation characteristic information input processing section 21A is incorporated in the operation guidance device 20 has been described, but the operation characteristic information input processing section 21A may be incorporated in the operation information input processing apparatus 10. Also, the signal processing unit 14 incorporated in the operation information input processing device 10 may be incorporated in the operation guidance device 20 .

It goes without saying that the specific configuration of each functional block of the operation information input processing device 10 and the operation guidance device 20 can be appropriately changed and designed within the scope of the effects of the present invention.

1: Valve Operation Support System 10: Operation Characteristics Information Input Device 11: Position Sensor 12: Torque Sensor 14: Signal Processing Unit (Operation Characteristics Information Measurement Processing Unit)
15: Communication interface 20: Operation guidance device 21: Calculation unit 21A: Operation characteristic information input processing unit 21B: Attribute information input processing unit 21C: History information generation processing unit 21D: Reference information storage processing unit 21E: Characteristics information comparison unit (display processing unit)
21F: Data output processing unit 22: Storage unit 23: Display unit 24: Notification unit 40: Operated valve 40A: Soft seal valve 45A: Cap 40B: Butterfly valve 45B: Cap 50: Water pipe 100: Pipe network mapping system 110: Pipe network mapping management server 120: Pipe network mapping database

Claims (10)

A valve operation characteristics information management device for collecting and managing operation characteristics information obtained with opening and closing operations of an operation target valve,
The operation characteristics of the operation target valve, including the rotation direction, rotation speed, and operation torque of a valve shaft that is provided in an operation tool that opens and closes the operation target valve, are measured using a sensor. an operation characteristic measurement processing unit that measures serially;
an operation characteristic information input processing unit that inputs and processes the operation characteristic information measured by the operation characteristic measurement processing unit via a data input unit;
an attribute information input processing unit for inputting and processing attribute information including identification information for individually identifying the valve to be operated and operation details;
When the degree of valve opening and the rotational speed or the operational torque of the valve to be operated are associated with each other based on the operational characteristic information including the rotational direction, rotational speed and operational torque of the valve shaft operated through the operational tool. a history information generation processing unit that generates sequential operation characteristic trend information and generates history information that associates the operation characteristic trend information with the operation target valve;
a recording processing unit that records the history information generated by the history information generation processing unit;
valve operating characteristic information management device. 2. The valve operation according to claim 1, further comprising a characteristic information comparison unit for displaying the operation characteristic trend information and reference characteristic information, which is the operation characteristic trend information of an expert stored in the recording processing unit, so as to be compared. Characteristic information management device. The characteristic information comparison unit monitors whether or not the operation characteristic information is maintained within an allowable range set in advance based on the reference characteristic information. 3. The valve operating characteristics information management device according to claim 2, wherein notification processing is executed to notify the operator in a recognizable manner. 4. The operation characteristic information input processing unit according to any one of claims 1 to 3 , wherein the operation characteristic information is configured to perform filter processing for removing information during non-operation associated with intermittent operation of the operation tool from the operation characteristic information. The valve operating characteristic information management device according to 1. 5. The valve operating characteristic information management device according to claim 4 , wherein the operating characteristic information input processing unit is configured to interpolate the missing information due to the filtering process based on the preceding and succeeding operating characteristic information. 6. The valve operating characteristic information management device according to claim 5 , wherein the operating characteristic information input processing section is configured to interpolate the missing information due to the filtering process using an interpolation method or a moving average. 7. The valve operation characteristics information management device according to claim 1, wherein the attribute information input and processed by the attribute information input processing unit includes operator information specifying an operator of the valve to be operated. 8. The valve operating characteristics information management device according to claim 1 , wherein operation purpose information is included in the attribute information input and processed by the attribute information input processing unit. 9. The valve operating characteristics information management device according to claim 1, wherein the record processing unit stores the history information in a database server for operating characteristics information management via a wireless communication interface.
10. The valve operating characteristic information management device according to claim 9 , wherein the database server is a database server constituting a pipe network mapping system.

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