WO2013058225A1 - 一軸偏心ねじポンプの遠隔モニタリングシステム - Google Patents

一軸偏心ねじポンプの遠隔モニタリングシステム Download PDF

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Publication number
WO2013058225A1
WO2013058225A1 PCT/JP2012/076661 JP2012076661W WO2013058225A1 WO 2013058225 A1 WO2013058225 A1 WO 2013058225A1 JP 2012076661 W JP2012076661 W JP 2012076661W WO 2013058225 A1 WO2013058225 A1 WO 2013058225A1
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WO
WIPO (PCT)
Prior art keywords
eccentric screw
screw pump
uniaxial eccentric
monitoring system
remote monitoring
Prior art date
Application number
PCT/JP2012/076661
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
小野　純夫
Original Assignee
兵神装備株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 兵神装備株式会社 filed Critical 兵神装備株式会社
Priority to EP12841195.6A priority Critical patent/EP2781749A1/en
Priority to CN201280060870.7A priority patent/CN103987967B/zh
Priority to KR1020147012916A priority patent/KR20140079472A/ko
Priority to US14/352,405 priority patent/US20140327554A1/en
Publication of WO2013058225A1 publication Critical patent/WO2013058225A1/ja

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
    • F04C14/28—Safety arrangements; Monitoring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B51/00—Testing machines, pumps, or pumping installations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/082—Details specially related to intermeshing engagement type machines or pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
    • F04C2/107—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2230/00—Manufacture
    • F04C2230/80—Repairing methods
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2270/00—Control; Monitoring or safety arrangements
    • F04C2270/80—Diagnostics
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2270/00—Control; Monitoring or safety arrangements
    • F04C2270/86—Detection
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2270/00—Control; Monitoring or safety arrangements
    • F04C2270/90—Remote control, e.g. wireless, via LAN, by radio, or by a wired connection from a central computer

Definitions

  • the present invention relates to a remote monitoring system capable of remotely monitoring the operation status of a plurality of uniaxial eccentric screw pumps installed by using a wireless intercommunication network.
  • Patent Document 1 Conventionally, in the manhole pump station management system disclosed in Patent Document 1 below, measures have been taken to detect pump abnormalities.
  • the management system according to the following Patent Document 1 is for easily predicting a failure of a manhole pump station and reducing the burden on a maintenance manager.
  • the pump when the average daily operation time of the pump provided at the manhole pumping station is more than a predetermined multiple of the average daily operation time in the predetermined period at the time of installation, the pump is Judging that there is a high possibility of failure, inspection is encouraged.
  • Patent Document 1 merely predicts a failure of the pump at the place where the pump is installed, and cannot monitor the operation state of the pump in a remote place.
  • a plurality of pumps such as a single-shaft eccentric screw pump are often installed in a single installation area, and therefore, it is required to provide a system that can monitor each pump in an integrated manner.
  • Patent Document 1 does not disclose or suggest any such problems and measures for solving the problems.
  • each pump or a sensor provided on the pump and a monitoring unit are provided. It is possible to consider one-to-one information communication between the two.
  • information communication lines corresponding to the number of pumps are required, and there is a problem that a complicated information communication network must be constructed. Further, there is a problem that the initial cost for laying information communication lines for the number of pumps and the running cost for performing information communication for detecting an abnormality of the pump are high.
  • the present invention makes it possible to monitor the operation status of a plurality of single-shaft eccentric screw pumps installed in a predetermined area by monitoring means installed at a remote location, while minimizing the initial cost and running cost required for monitoring.
  • the purpose was to provide a remote monitoring system for a uniaxial eccentric screw pump that can be controlled.
  • the present invention provided to solve the above-described problem is a uniaxial shaft for monitoring the operation state of a plurality of single-shaft eccentric screw pumps installed in a predetermined area by a monitoring means outside the predetermined area connected to the Internet network.
  • This is a remote monitoring system for an eccentric screw pump.
  • the remote monitoring system detects wireless intercommunication means that can communicate with each other wirelessly, Internet connection means that can be connected to the Internet network, and the operational status of the single-shaft eccentric screw pump, and outputs the operational status detection information. Possible operation status detection means.
  • the wireless mutual communication means is provided for each of the uniaxial eccentric screw pumps, and a communication network capable of transmitting and receiving the operation status detection information by mutual communication by the wireless mutual communication means is constructed.
  • the operation status detection information transmitted and received in the communication network is aggregated in an information aggregating unit configured by one of the wireless intercommunication units, transmitted to the Internet network through the Internet connection unit, and the monitoring It is characterized by being able to monitor in the means.
  • a unique communication network is constructed by wireless mutual communication means provided in each uniaxial eccentric screw pump, and the operation status of the uniaxial eccentric screw pump is monitored via this communication network. It is possible to transmit / receive the operation status detection information shown.
  • One of the plurality of wireless intercommunication means functions as an information aggregating means, and the operation status detection information transmitted and received in the communication network described above can be aggregated. Further, the operation status detection information aggregated in the information aggregating unit is transmitted via the Internet connection unit, and the monitoring unit can be monitored.
  • the remote monitoring system of the present invention it is possible to monitor the operation state of each uniaxial eccentric screw pump by the monitoring unit without providing an internet communication unit for each of the plurality of uniaxial eccentric screw pumps. Therefore, the remote monitoring system of the present invention can minimize the installation cost and communication cost of the Internet communication means.
  • the remote monitoring system of the present invention should be used not only for detecting that the uniaxial eccentric screw pump is in an abnormal state, but also for detecting a decrease in the output of the uniaxial eccentric screw pump and performing maintenance such as replacement of parts. It can also be used for purposes such as informing whether or not. In this way, by making it possible to notify in advance whether maintenance is necessary or not, the period during which the uniaxial eccentric screw pump must be stopped can be minimized, and the factory line, etc. must be stopped. Can be prevented.
  • a driving machine capable of generating rotational power
  • a male screw type rotor that rotates eccentrically by the rotational power transmitted from the driving machine side
  • a remote monitoring system for a uniaxial eccentric screw pump according to the present invention includes an operation status detection means capable of detecting an operation status of the uniaxial eccentric screw pump as operation status detection information, and a plurality of uniaxial eccentric screw pumps installed in a predetermined region.
  • the internet which is provided in part or in whole and which can transmit and receive the operation status detection information by wireless communication, and a local network constructed using each of the wireless communication means as nodes is connected to the Internet Connecting means.
  • at least one of the wireless intercommunication means functions as an information aggregating means for aggregating the operation status detection information transmitted and received in the local network.
  • the operation status detection information aggregated in the wireless intercommunication means functioning as the information aggregation means is transmitted to the Internet network via the Internet connection means. Thereby, the operating state of the uniaxial eccentric screw pump can be monitored by the monitoring means outside the predetermined area connected to the Internet network.
  • the operation status of the uniaxial eccentric screw pump installed in the predetermined area can be detected by the operation status detection means and output as the operation status detection information.
  • the operation status detection information output from the operation status detection means is transmitted and received in a local network constructed with each wireless communication device as a node, and wireless communication that functions as an information aggregation device Centralized in the means.
  • the operation status detection information collected by the predetermined wireless intercommunication means is transmitted via the Internet connection means, so that the monitoring means can be monitored.
  • the monitoring means grasps the detection result of the operation status of each uniaxial eccentric screw pump without providing Internet communication means for each of the plurality of uniaxial eccentric screw pumps provided. Is possible. Therefore, the remote monitoring system of the present invention can minimize the installation cost and communication cost of the Internet communication means.
  • the remote monitoring system of the present invention not only detects that the uniaxial eccentric screw pump is in an abnormal state, but also detects the behavior of the output of the uniaxial eccentric screw pump, etc., and requires maintenance such as component replacement. It is also possible to use it for judgment or notification of refusal. In this way, by determining whether maintenance is necessary or notifying in advance, it is possible to minimize the stop period of the uniaxial eccentric screw pump and to stop the factory line, etc. Can be prevented.
  • the wireless intercommunication means stands by in the energized stop state and enters the energized state when performing transmission / reception of the detection information of the operation status detecting means. It is desirable.
  • the uniaxial eccentric screw pump to be monitored in the remote monitoring system of the present invention feeds fluid by rotating a male screw type rotor inserted into a female screw type stator. Therefore, it is possible to monitor the operating status of the single-shaft eccentric screw pump by detecting the driving status of the driving machine that rotates the rotor, specifically, the rotational torque, rotational frequency, or rotational speed of the driving machine.
  • the remote monitoring system for a single-shaft eccentric screw pump of the present invention provided on the basis of the above-described knowledge is characterized in that the operation state detecting means is configured to determine a rotational torque, a rotational frequency, and a rotational speed of a driving machine that drives the single-shaft eccentric screw pump. Any one or more of them can be detected.
  • the uniaxial eccentric screw pump pumps the fluid as the rotor inserted through the stator rotates, it is assumed that the stator or the rotor is worn when used over a long period of time. Further, it is assumed that the rotational torque, rotational frequency, or rotational speed of the driving machine required for rotating the rotor varies due to the influence of the wear of the stator or the rotor. For this reason, in the single-shaft eccentric screw pump, the appropriate value of the rotational torque, rotational frequency, or rotational speed of the drive unit also varies depending on the operating conditions.
  • the threshold set for abnormality determination is increased or decreased according to the accumulated operation time, etc. Monitoring accuracy can be further improved by performing abnormality determination after taking measures so that the driving situation can be taken into account.
  • the operation state detecting means may be capable of detecting information relating to a fluid flowing into and out of the uniaxial eccentric screw pump. Specifically, the operation state detecting means detects one or more pieces of information on the fluid such as discharge pressure, inflow pressure, physical properties of the fluid to be pumped, flow rate of the fluid, etc. in the uniaxial eccentric screw pump. It may be possible.
  • the operation state detecting means can determine whether or not the operation state of the uniaxial eccentric screw pump is abnormal, and the determination result is as follows. It is preferable that the operation status detection information is transmitted and received.
  • the remote monitoring system of the present invention instead of transmitting and receiving the detection data indicating the operation state of each uniaxial eccentric screw pump as it is, after determining the operation state of the uniaxial eccentric screw pump in each operation state detection means, The determination result is transmitted. Therefore, in the remote monitoring system of the present invention, the communication data capacity in the local network can be minimized, and the occurrence of communication failure or the like can be prevented.
  • a part of a plurality of uniaxial eccentric screw pumps does not have a wireless intercommunication means but includes the internet connection means, and the internet connection means.
  • the operation status detection information transmitted / received in the local network via the network may be transmitted to the Internet network.
  • the Internet connection means provided in the uniaxial eccentric screw pump not provided with the wireless intercommunication means is used to transmit the operation status detection information transmitted / received in the local network constructed by the wireless intercommunication means to the Internet network. It can be utilized as a means for transmitting to Further, it is not necessary to newly provide wireless mutual communication means in a uniaxial eccentric screw pump not provided with wireless mutual communication means. Therefore, according to the structure mentioned above, the structure of the remote monitoring system of a uniaxial eccentric screw pump can be simplified, and installation cost can be suppressed to the minimum.
  • the Internet connection means is capable of information communication through a mobile communication system.
  • a local communication network (LAN: Local Area Network) or an intranet communication network that is installed separately from the remote monitoring system of the present invention is used in the area where the uniaxial eccentric screw pump is installed. Without detection, the detection information related to the operation state of the single-shaft eccentric screw pump can be transmitted by the Internet connection means. Therefore, the remote monitoring system of the present invention can be installed without considering connection with a separately provided local area communication network or the like.
  • the present invention it is possible to monitor the operation status of a plurality of single-shaft eccentric screw pumps installed in a predetermined area by a monitoring means installed at a remote location, while minimizing the initial cost and running cost required for monitoring. It is possible to provide a remote monitoring system for a controllable single-shaft eccentric screw pump.
  • FIG. 1 It is a system conceptual diagram of the remote monitoring system of the uniaxial eccentric screw pump concerning one embodiment of the present invention. It is sectional drawing of a uniaxial eccentric screw pump.
  • A is an apparatus block diagram of the computer connected with respect to the uniaxial eccentric screw pump
  • b is an apparatus block diagram of the cell computer connected with respect to the uniaxial eccentric screw pump.
  • A)-(d) is an image figure which shows an example of the pictogram displayed when abnormality of a uniaxial eccentric screw pump is detected in the monitoring means, respectively.
  • (A) is an image diagram showing a display method of the location of the uniaxial eccentric screw pump in which an abnormality has occurred
  • (b) is an image diagram showing the operation behavior of the uniaxial eccentric screw pump in an abnormal state
  • (c) to (e) These are image figures which show an example of the pictogram for showing the abnormal location and abnormal mode of a uniaxial eccentric screw pump.
  • remote monitoring system 1 (hereinafter also simply referred to as “remote monitoring system 1”) of a single-shaft eccentric screw pump according to an embodiment of the present invention will be described in detail with reference to the drawings.
  • remote monitoring system 1 the outline of the structure of the uniaxial eccentric screw pump 100 that is the monitoring target of the remote monitoring system 1 will be described prior to the details of the remote monitoring system 1.
  • the uniaxial eccentric screw pump 100 is a so-called rotary displacement pump configured with a uniaxial eccentric screw pump mechanism 110 as a main part.
  • the uniaxial eccentric screw pump 110 is configured such that a stator 166, a rotor 172, a power transmission mechanism 178, and the like are accommodated in a casing 152.
  • the casing 152 is a metallic cylindrical member, and a first opening 154 is provided on one end side in the longitudinal direction.
  • a second opening 164 is provided on the outer peripheral portion of the casing 152. The second opening 164 communicates with the internal space of the casing 152 at the intermediate portion 160 located at the intermediate portion in the longitudinal direction of the casing 152.
  • the first opening 154 and the second opening 164 are portions that function as a suction port and a discharge port of the pump mechanism 110, respectively.
  • the uniaxial eccentric screw pump 100 can cause the first opening 154 to function as a discharge port and the second opening 164 as a suction port by rotating the rotor 172 in the forward direction. Further, by rotating the rotor 172 in the reverse direction, the first opening 154 can function as a suction port and the second opening 164 as a discharge port.
  • the stator 166 is a member having a substantially cylindrical outer shape formed of an elastic body such as rubber or resin.
  • the inner peripheral wall 170 of the stator 166 has a single-stage or multi-stage female screw shape with n strips.
  • the stator 166 has a multistage female screw shape with two threads.
  • the through-hole 168 of the stator 166 is formed so that its cross-sectional shape (opening shape) is substantially oval when viewed in cross section at any position in the longitudinal direction of the stator 166.
  • the rotor 172 is a metal shaft, and has a single-stage or multi-stage female screw shape with n-1 strips.
  • the rotor 172 has a male screw shape that is eccentric with a single thread.
  • the rotor 172 is formed so that its cross-sectional shape is substantially a true circle when viewed in cross section at any position in the longitudinal direction.
  • the rotor 172 is inserted through the through hole 168 formed in the stator 166 described above, and can be eccentrically rotated freely inside the through hole 168.
  • the outer peripheral wall 174 of the rotor 172 and the inner peripheral wall 170 of the stator 166 are in close contact with each other at the tangent line therebetween, and the inner peripheral wall 170 of the stator 166 and the outer peripheral wall of the rotor 172 are in contact with each other.
  • a fluid conveyance path 176 (cavity) is formed therebetween.
  • the fluid conveyance path 176 extends spirally in the longitudinal direction of the stator 166 and the rotor 172.
  • the fluid conveyance path 176 advances in the longitudinal direction of the stator 166 while rotating in the stator 166. Therefore, when the rotor 172 is rotated, fluid is sucked into the fluid conveyance path 176 from one end side of the stator 166 and transferred to the other end side of the stator 166 in a state of being confined in the fluid conveyance path 176. It is possible to discharge at the other end side of the stator 166.
  • the pump mechanism 110 according to the present embodiment is used by rotating the rotor 172 in the forward direction, and can pump the viscous liquid sucked from the second opening 164 and discharge it from the first opening 154. Yes.
  • the power transmission mechanism 178 is for transmitting power from the driving machine 196 to the rotor 172 described above.
  • the power transmission mechanism 178 includes a power transmission unit 180 and an eccentric rotation unit 182.
  • the power transmission unit 180 is provided on one end side of the casing 152 in the longitudinal direction.
  • the eccentric rotating part 182 is provided in an intermediate part 160 formed between the power transmission part 180 and the stator mounting part 156.
  • the eccentric rotating part 182 is a part that connects the power transmission part 180 and the rotor 172 so that power can be transmitted.
  • the eccentric rotating part 182 includes a connecting shaft 188 constituted by a conventionally known coupling rod, screw rod, or the like. Therefore, the eccentric rotating unit 182 can transmit the rotational power generated by operating the driving machine 196 to the rotor 172 and rotate the rotor 172 eccentrically.
  • a controller 200 for operation control is connected to the uniaxial eccentric screw pump 100.
  • the controller 200 includes an inverter circuit 202 and a PLC 204 (Programmable Logistic Controller).
  • a controller 200 (hereinafter also referred to as “controller 200a”) equipped with a computer 210 described in detail later is used for one of the uniaxial eccentric screw pumps 100 provided as a plurality of monitoring targets by the remote monitoring system 1. It has been.
  • a controller 200 (hereinafter also referred to as “controller 200b”) on which a cell computer 220, which will be described in detail later, is used in place of the computer 210 is used in the other uniaxial eccentric screw pump 100.
  • the remote monitoring system 1 is configured such that, for example, a manufacturer or a maintenance / inspector of a single-shaft eccentric screw pump 100 has a plurality of single-shaft eccentric screw pumps 100 installed in a factory site of a user of the single-shaft eccentric screw pump 100 as a customer at a remote location. It is used in usage forms such as monitoring.
  • the remote monitoring system 1 allows a manufacturer or a maintenance / inspector of the single-shaft eccentric screw pump 100 to sequentially grasp the operating status of the single-shaft eccentric screw pump 100 used by the customer, and to perform an appropriate maintenance period. It can be used for purposes such as making suggestions or responding quickly to problems.
  • the remote monitoring system 1 is configured to monitor the operation status of a plurality of uniaxial eccentric screw pumps 100 installed in a predetermined area such as a factory or a work place by a monitoring unit 50 installed in a remote place. It is a system for monitoring.
  • the remote monitoring system 1 is roughly divided into a wireless intercommunication means 10 installed on the uniaxial eccentric screw pump 100 side, an operation status detection means 20, an Internet connection means 30, and a monitoring means 50 installed at a remote place.
  • the wireless intercommunication means 10 is a terminal installed for each uniaxial eccentric screw pump 100 installed in the local area, and has a unique multi-hop network (hereinafter also referred to as “communication network N”) in the local area. Functions as a node to build The wireless intercommunication means 10 can be configured by a node terminal that constructs a wireless PAN (Personal Area Network). In the present embodiment, ZigBee (registered trademark) is adopted as a standard for the wireless PAN built in the local area.
  • the communication network N is a communication network uniquely constructed for remote monitoring of the uniaxial eccentric screw pump 100. An existing local area network (LAN) or the like in a factory where the uniaxial eccentric screw pump 100 is installed. Independent of the network.
  • the remote monitoring system 1 is used by a manufacturer or maintenance / inspector of the uniaxial eccentric screw pump 100 to monitor the uniaxial eccentric screw pump 100 installed in a factory site on the customer (user) side.
  • a communication network N is constructed as a communication network to be used for monitoring data communication, separately from a local area network (LAN) laid on the premises by a customer. Therefore, data used for monitoring of the single-shaft eccentric screw pump 100 is communicated without using an information infrastructure such as a local area network (LAN) on the customer side in principle.
  • LAN local area network
  • the wireless intercommunication means 10 attached to each uniaxial eccentric screw pump 100 is roughly classified into a coordinator 10a (information aggregating means), a router 10b, and an end device 10c according to the function.
  • the wireless intercommunication means 10 (hereinafter simply referred to as “coordinator 10a”) classified as the coordinator 10a has an information aggregating function for aggregating information transmitted and received in the communication network N.
  • the wireless intercommunication means 10 (hereinafter simply referred to as “router 10b”) classified as the router 10b exhibits a relay function in the communication network N.
  • the wireless intercommunication means 10 classified as the end device 10c (hereinafter, also simply referred to as “end device 10c”) is a terminal in the communication network N and is different from the router 10b in that it does not perform a relay function. To do.
  • the coordinator 10a can start the communication network N and exhibit a router function, and can manage the operations of all the wireless intercommunication means 10 functioning as nodes in the communication network N.
  • the router 10b cannot start the communication network N, but can perform the operation of the wireless intercommunication means 10 that functions as a child node while exhibiting the router function.
  • the end device 10c can manage its own operation, the end device 10c cannot start up the communication network N and cannot perform the router function.
  • the wireless intercommunication means 10 other than the coordinator 10a always stands by in a power-off state, and is in a power-on state only when information is transmitted / received.
  • the operation status detection means 20 is for detecting the operation status of the uniaxial eccentric screw pump 100 and outputting it as operation status detection information, and is provided so as to correspond to each uniaxial eccentric screw pump 100.
  • the operation state detection means 20 is roughly divided into a detection unit 22 configured by various sensors and the like, and an abnormality determination unit 24 for performing abnormality determination based on detection data of the detection unit 22.
  • the detection unit 22 can be configured by a device that can detect the rotational torque, rotational frequency, or rotational speed of the drive unit 196 of the uniaxial eccentric screw pump 100. Specifically, the detection unit 22 can detect rotational torque, rotational frequency, or rotational speed based on data acquired from an inverter that performs drive control of the driving machine 196. Moreover, the detection part 22 can detect the information regarding fluid, such as the discharge pressure in the uniaxial eccentric screw pump 100, inflow pressure, the physical property (temperature, viscosity, ph, etc.) of the fluid which is a pumping object, and the flow volume of a fluid. It can be constituted by a sensor.
  • the abnormality determination unit 24 is for determining whether or not the operation state of the uniaxial eccentric screw pump 100 is abnormal based on the data acquired by the detection unit 22. Specifically, the abnormality determination unit 24 operates the uniaxial eccentric screw pump 100 when data indicating the driving state of the driving machine 196 (rotational torque, rotational frequency, rotational speed, or the like) is outside a predetermined allowable range. It can be determined that the situation is abnormal. In addition, the abnormality determination unit 24 operates the uniaxial eccentric screw pump 100 when information (discharge pressure, inflow pressure, physical properties, flow rate, etc.) regarding the fluid flowing into and out of the uniaxial eccentric screw pump 100 is outside a predetermined allowable range. It can be determined that the situation is abnormal.
  • the operation status detection means 20 can output either or both of the detection data acquired by the detection unit 22 and the data derived by processing the detection data as the operation status detection information.
  • the data derived based on the detection data for example, data indicating the abnormality determination result derived in the abnormality determination unit 24 (hereinafter also referred to as “abnormality determination data”) corresponds.
  • the abnormality determination data derived by the abnormality determination unit 24 is output from the operation state detection unit 20 as operation state detection information.
  • the above-described wireless intercommunication means 10 and the abnormality determination unit 24 of the operation state detection means 20 are provided for each uniaxial eccentric screw pump 100 in a unitized state as a cell computer 220 together with an external I / O connector and the like.
  • the detection unit 22 of the operation status detection unit 20 is electrically connected to the cell computer 220.
  • the cell computer 220 is connected to a power source such as a battery provided separately.
  • the Internet connection means 30 has a function as a gateway 32 that connects the communication network N and the Internet network, and a function as a communication terminal 34 that enables information communication via the Internet network by a mobile communication system.
  • the Internet connection means 30 may be configured by a computer 210 provided in a controller 200 of one of the uniaxial eccentric screw pumps 100 provided as a monitoring target (hereinafter also referred to as an external uniaxial eccentric screw pump 101). it can.
  • the computer 210 includes Internet communication means 30 instead of the wireless intercommunication means 10 provided in the computer 220. Therefore, the communication network N cannot be established between the external uniaxial eccentric screw pump 101 and the other uniaxial eccentric screw pumps 100 other than the external uniaxial eccentric screw pump 101.
  • the gateway 32 provided in the Internet communication unit 30 can receive the operation status detection information that is aggregated and output by the wireless intercommunication unit 10 that functions as the coordinator 10 a in the communication network N.
  • the motion detection means 20 is provided in the computer 210 for the external uniaxial eccentric screw pump 100. Therefore, the Internet communication means 30 can transmit the operation status detection information received at the gateway 32 to the Internet network via the communication terminal 34 together with the operation status detection information about the external uniaxial eccentric screw pump 101. .
  • the monitoring means 50 is a terminal constituted by a server or a personal computer connected to the Internet network.
  • the monitoring means 50 is configured such that a client terminal 50b (client computer) formed of a personal computer is connected to the server 50a by wire or wireless so that data communication is possible.
  • client terminal 50b client computer
  • the operation status detection information transmitted to the Internet network via the communication terminal 34 described above is received by the server 50a, and the operation status of each uniaxial eccentric screw pump 100 is displayed on the client terminal 50b using a predetermined viewer or the like. Can be used for monitoring.
  • the display form of the operation status related to each uniaxial eccentric screw pump 100 in the monitoring means 50 for example, it is possible to display using a so-called pictogram or the like in addition to displaying using characters or graphs.
  • the uniaxial eccentric screw pump 100 to be monitored may be displayed as a pictogram, and the pictogram corresponding to the uniaxial eccentric screw pump 100 in which an abnormality has been detected may be displayed in a different display form.
  • a pictogram corresponding to the uniaxial eccentric screw pump 100 in which an abnormality has been detected may be displayed in a color different from that of the others, or may be blinked.
  • warning display by pictogram warning display by other forms using characters or graphs, or warning by sound or the like may be used in combination.
  • FIGS. 4 (a) to (d) when an abnormality is detected in the uniaxial eccentric screw pump 100, it is also possible to display and notify a pictogram as shown in FIGS. 4 (a) to (d). Specifically, when biting occurs at the suction port (second opening 164) of the uniaxial eccentric screw pump 100, the rotational torque of the driving machine 196 increases beyond the allowable range. In this case, as shown in FIG. 4 (a), by displaying the pictogram of the suction port (second opening 164) on the monitoring means 50, the biting of the fluid has occurred. Can be reported in an intuitively understandable state.
  • the uniaxial eccentricity in which the abnormality has occurred as shown in FIG.
  • a location where an abnormality has occurred may be displayed in a display form different from other locations.
  • the uniaxial eccentric screw pump 100 is classified finely and the location where the occurrence of abnormality is suspected is displayed using the pictogram, so that the operator who is monitoring the location where the abnormality has occurred is intuitive and It can be accurately grasped.
  • an abnormal location is obtained as shown in FIG. 4B by selecting the pictogram indicating the uniaxial eccentric screw pump 100 by clicking or the like.
  • a pictogram for indicating may be displayed.
  • the operation status detection information about each uniaxial eccentric screw pump 100 is transmitted / received in the communication network N constructed by the wireless mutual communication means 10, and is sent to the coordinator 10a. Can be aggregated. Further, in the remote monitoring system 1, the monitoring status 50 can be monitored by transmitting the operation status detection information collected in the coordinator 10 a via the Internet connection means 30. Therefore, according to the remote monitoring system 1, it is possible to grasp the operation status of each uniaxial eccentric screw pump 100 in the monitoring unit 50 without providing communication means by the Internet for each of the uniaxial eccentric screw pumps 100 provided in plurality. It is. Therefore, the remote monitoring system 1 of the present embodiment can minimize the installation cost and communication cost of the Internet communication means.
  • the wireless intercommunication means 10 stands by in an energized stop state, and enters an energized state when performing transmission / reception of detection information of the operation status detecting means 20. Therefore, according to the remote monitoring system 1, the power consumption in the radio
  • the battery is used as the power source of the cell computer 220.
  • the present invention is not limited to this.
  • the power source connected to the drive unit 196 of the uniaxial eccentric screw pump 100 Or the like can be used for the cell computer 220.
  • this invention is not limited to this and is always in an energization state. It may be one that waits.
  • the detection unit 22 of the operation state detection unit 20 can detect the rotational torque, the rotational frequency, or the rotational speed of the drive unit 196 of the uniaxial eccentric screw pump 100, the uniaxial eccentricity is performed.
  • the operating state of the screw pump 100 can be appropriately monitored.
  • the detection unit 22 can detect information on the fluid flowing into and out of the uniaxial eccentric screw pump 100, specifically, the discharge pressure, the inflow pressure, the physical properties of the fluid to be pumped, the flow rate of the fluid, and the like. Even in this case, the operation state of the single-shaft eccentric screw pump 100 can be appropriately monitored.
  • the detection unit 22 of the operation state detection unit 20 can detect the rotational torque, the rotational frequency, or the rotational speed of the drive unit 196 of the uniaxial eccentric screw pump 100.
  • the uniaxial eccentricity is performed.
  • the operating state of the screw pump 100 can be appropriately monitored.
  • the detection unit 22 can detect information on the fluid flowing into and out of the uniaxial eccentric screw pump 100, specifically, the discharge pressure,
  • the data such as rotational torque, rotational frequency, or rotational speed detected for the driving machine 196 may be a single type, but the monitoring accuracy can be further improved by acquiring a plurality of types of data.
  • the information about the fluid flowing into and out of the uniaxial eccentric screw pump 100 may be of a single type, but it is possible to improve monitoring accuracy by acquiring a plurality of types of information.
  • only one of the information about the driving machine 196 such as the rotational torque and the information related to the fluid such as the flow rate of the fluid may be detected by the detection unit 22. By acquiring this, it becomes possible to examine the operation status of the uniaxial eccentric screw pump 100 from various perspectives, and further improvement in monitoring accuracy can be expected.
  • the abnormality determination part 24 is provided in the operation condition detection means 20, and the operation condition of the uniaxial eccentric screw pump 100 is abnormal based on the detection data acquired in the detection part 22. It is possible to determine whether or not. Moreover, in the remote monitoring system 1, the determination result by the abnormality determination part 24 is transmitted / received by the wireless mutual communication means 10 as operation condition detection information. Therefore, in the remote monitoring system 1, the communication data capacity in the communication network N can be suppressed to the minimum, and the occurrence of a communication failure or the like can be prevented.
  • the abnormality determination unit 24 is provided in the cell computer 220 provided for each uniaxial eccentric screw pump 100 and the determination result derived in the abnormality determination unit 24 is transmitted and received. It is not limited to this. Specifically, the abnormality determination unit 24 may be provided on the monitoring unit 50 side that is located away from the communication network N, and the abnormality determination of the uniaxial eccentric screw pump 100 may be performed on the monitoring unit 50 side. In this case, it is possible to monitor whether or not the operating state of the uniaxial eccentric screw pump 100 is abnormal by sequentially transmitting detection information from the detection unit 22 to the monitoring means 50 side via the communication network N and the Internet network. It becomes possible.
  • the abnormality determining unit 24 detects that the uniaxial eccentric screw pump 100 is in an abnormal state and can be confirmed by the monitoring unit 50, but the present invention is limited to this. Is not to be done. Specifically, based on detection data such as rotational torque of the driving machine 196 or detection data such as discharge pressure in the uniaxial eccentric screw pump 100, a decrease in the output of the uniaxial eccentric screw pump 100 is detected, and the uniaxial eccentric screw pump 100 is detected.
  • the monitoring means 50 may be configured to notify the necessity of maintenance before the operation state becomes an abnormal state. In this way, by making it possible to notify in advance of the necessity of maintenance, the stop period of the single-shaft eccentric screw pump 100 is minimized, and the situation where the factory line or the like must be stopped is prevented. it can.
  • the reference (threshold value) used when the abnormality determination unit 24 performs abnormality determination may be single or plural.
  • a plurality of standards (threshold values) are provided, for example, a standard for detecting that the operation state of the uniaxial eccentric screw pump 100 is completely abnormal, and a standard for urging maintenance of the uniaxial eccentric screw pump 100. As described above, it may be set for each application.
  • one of the plurality of single-shaft eccentric screw pumps 100 (external single-shaft eccentric screw pump 101) installed in a predetermined area such as a factory premises serves as a wireless intercommunication means 10.
  • the computer 210 is equipped with the Internet communication means 30 instead of the installed cell computer 220, and the computer 210 is used as a device for transmitting and receiving the operation status detection information via the Internet network. . Therefore, the remote monitoring system 1 does not need to separately provide a configuration necessary for communication using the Internet network such as the gateway 32, and the installation cost can be minimized.
  • the external uniaxial eccentric screw pump 101 including the computer 210 equipped with the Internet communication means 30 is provided outside the communication network N, and the Internet connection means 30 provided in the computer 210 is used for Internet connection.
  • the present invention is not limited to this.
  • a configuration corresponding to the gateway 32 and the communication terminal 34 forming the Internet communication means 30 may be separately provided.
  • the cell computer 220 for each uniaxial eccentric screw pump 100 all the uniaxial eccentric screw pumps 100 can be arranged in the communication network N.
  • the operation status detection information transmitted / received in the communication network N can be collected in the wireless intercommunication means 10 functioning as the coordinator 10a and transmitted / received via the gateway 32 and the communication terminal 34.
  • the Internet connection means 30 employs a communication system capable of information communication by a mobile communication system, and therefore, an existing local area network (LAN), an intranet, or the like is used. It is possible to transmit / receive the operation status detection information via the Internet network without using the communication network. Therefore, the remote monitoring system 1 of the present embodiment can be installed without considering connection with a separately provided local area communication network or the like.
  • the Internet connection means 30 employs information that can be communicated by a mobile communication system, but the present invention is not limited to this. That is, for example, when an existing local area communication network can be used to connect to the Internet network, and the information can be connected to the Internet network without performing information communication by the mobile communication system, the mobile communication system is There is no need to use it.
  • the wireless intercommunication means 10 only needs to be capable of wireless mutual communication, and may be configured by a wireless LAN terminal or the like instead of a wireless communication terminal by ZigBee (registered trademark).
  • the computer 210,220 illustrated the structure comprised as a part of controller 200a, 200b, this invention is not limited to this,
  • the computer 210,220 is the controller 200a, 200.
  • the structure provided separately from 200b may be sufficient (refer FIG. 5).
  • the wireless intercommunication unit 10 is mounted on the cell computer 220 in the present embodiment, but the wireless intercommunication unit 10 is not necessarily mounted on the cell computer 220.
  • the wireless intercommunication means 10 may be configured as independent from the cell computer 220 and the controllers 200a and 200b.
  • the wireless intercommunication means 10 may be mounted on the controllers 200a and 200b as a component different from the cell computer 220.
  • the monitoring means 50 side receives data such as rotational torque of the drive unit 196 of each uniaxial eccentric screw pump 100 from a predetermined region side such as a factory, and diagnoses the operating state of each uniaxial eccentric screw pump 100.
  • a predetermined region side such as a factory
  • the administrator of the remote monitoring system 1 can view the results, the present invention is not limited to this.
  • a mobile phone, a PDA (Personal Digital Assistant) terminal, a smartphone, or the like owned by the user of the single-shaft eccentric screw pump 100 or the operator who performs maintenance is used as the client terminal 50b.
  • the server 50a may be appropriately accessed using an ID number or a password, and the user or a maintenance worker may be able to grasp the operation status of each uniaxial eccentric screw pump 100.
  • notification data for notifying the occurrence of the abnormality is owned by a user of the uniaxial eccentric screw pump 100 registered in advance or an operator who performs maintenance and the like. You may make it transmit to the client terminal 50b.
  • the abnormality determination part 24 provided in the computers 210 and 220 performs abnormality determination of the uniaxial eccentric screw pump 100 on a predetermined area side such as a factory, and transmits the result to the monitoring means 50 side.
  • the server 50a is assumed to have a function corresponding to the abnormality determination unit 24, and data indicating the operation status of the uniaxial eccentric screw pump 100 is collected on the server 50a side of the monitoring unit 50 to perform abnormality determination. It is good also as a structure which can browse the determination result in the client terminal 50b.
  • the above-described abnormality notification method by pictogram display is merely an example of the present invention, and it is possible to notify abnormality in various other forms using a pictogram.
  • a mark indicating the location of the installation area on the map as shown in FIG. is displayed on the monitor of the client terminal 50b.
  • the display form is changed, for example, the position indicator indicating the location is blinked or the display color of the position indicator is changed. At this time, it may be notified by voice or the like that the uniaxial eccentric screw pump 100 in an abnormal state exists.
  • the location of the uniaxial eccentric screw pump 100 is displayed as a map as shown in FIG. 6A, by selecting (clicking) a position indicator indicating the occurrence of abnormality on the monitoring means 50 side, for example, FIG. It is good also as a structure which can confirm the data which show the operation behavior of the uniaxial eccentric screw pump 100 which is in an abnormal state like a numerical value or a graph.
  • the abnormality confirmation button displayed in FIG. 6B any of the uniaxial eccentric screw pump 100 can be selected using, for example, pictograms such as those shown in FIGS. 6C and 6D. It is good also as displaying so that what kind of abnormality has occurred in this part can be grasped intuitively.
  • FIG. DRY "display) when the supply of the fluid is stagnant and the uniaxial eccentric screw pump 100 is in the idle operation state, as shown in FIG. DRY "display) can be displayed for notification.
  • FIG. DRY "display” when fluid clogging occurs near the discharge port, it is possible to intuitively notify the abnormal location and the abnormal mode by displaying a mark indicating that clogging has occurred near the discharge port. Is possible.
  • FIGS. 6C to 6E it is preferable to appropriately change the pictogram showing the uniaxial eccentric screw pump 100 according to the apparatus configuration. That is, the uniaxial eccentric screw pump 100 that does not include a fluid supply hopper or the like is shown in FIG. 6C, and a fluid supply hopper as shown in FIG. 6D. As shown in FIG. Furthermore, when a screw is provided in the intermediate portion 160 of the uniaxial eccentric screw pump 100, it may be displayed by a pictogram as shown in FIG. Thus, by making the pictogram different according to the device configuration of the uniaxial eccentric screw pump 100, for example, when a problem occurs in the screw, an error display is displayed at the location of the screw. Can be notified.
  • the remote monitoring system of the present invention can be used for maintenance work of a single-shaft eccentric screw pump by monitoring the operation status of a plurality of single-shaft eccentric screw pumps installed in a predetermined area by a monitoring means installed in a remote place. It can be used effectively.
  • a manufacturer or a maintenance / inspection company of a single-shaft eccentric screw pump provides an indication of the maintenance time of a single-shaft eccentric screw pump installed in the customer's factory premises. Or, it can be used for monitoring in a remote place for the purpose of promptly responding to defects. Further, in the remote monitoring system of the present invention, since a communication network for use in monitoring data communication is constructed by the wireless mutual communication means, an information infrastructure laid on the customer site or the like is used. Remote monitoring of a uniaxial eccentric screw pump can be performed without this.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
PCT/JP2012/076661 2011-10-17 2012-10-16 一軸偏心ねじポンプの遠隔モニタリングシステム WO2013058225A1 (ja)

Priority Applications (4)

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EP12841195.6A EP2781749A1 (en) 2011-10-17 2012-10-16 Remote monitoring system of uniaxial eccentric screw pump
CN201280060870.7A CN103987967B (zh) 2011-10-17 2012-10-16 单轴偏心螺杆泵的远程监控系统
KR1020147012916A KR20140079472A (ko) 2011-10-17 2012-10-16 1축 편심 나사 펌프의 원격 모니터링 시스템
US14/352,405 US20140327554A1 (en) 2011-10-17 2012-10-16 Remote monitoring system of uniaxial eccentric screw pump

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JP2011-227551 2011-10-17
JP2011227551A JP6040399B2 (ja) 2011-10-17 2011-10-17 一軸偏心ねじポンプの遠隔モニタリングシステム

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CN103987967A (zh) 2014-08-13
US20140327554A1 (en) 2014-11-06
JP2013087665A (ja) 2013-05-13
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EP2781749A1 (en) 2014-09-24
CN103987967B (zh) 2017-06-06
KR20140079472A (ko) 2014-06-26

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