CN1525094A

CN1525094A - Valve actuating mechanism with self-diagnostic function and intelligent valve actuating mechanism

Info

Publication number: CN1525094A
Application number: CNA2003101237694A
Authority: CN
Inventors: 森正和; 谷直树
Original assignee: Seibu Electric and Machinery Co Ltd
Current assignee: Seibu Electric and Machinery Co Ltd
Priority date: 2003-02-24
Filing date: 2003-12-17
Publication date: 2004-09-01
Anticipated expiration: 2023-12-17
Also published as: TW200416363A; CN100354782C; KR20040076194A; KR100957952B1; TWI223042B

Abstract

A valve actuator in accordance with the present invention can be constructed as self-diagnosis valve actuator, which operates a valve to control the opening and closing state of a passage based on the status data from various sensors, for diagnosing deterioration of the device itself, and predicting the replacement time of female screw, seal and the like and estimating operating state so as to realize maintenance on self-diagnosis. This valve actuator may also be constructed as an intelligent valve actuator, which operates the valve to self-control the opening and closing state of a passage based on the status data from various sensors, for diagnosing deterioration of the device itself and predicting the replacement time of female screw, seal and the like and estimating operating state so as to realize operation and maintenance.

Description

Valve actuating mechanism and intelligent valve actuating mechanism with self-diagnosing function

Technical field

The present invention relates to the valve actuating mechanism that a kind of valve that makes (being referred to as " valve ") such as the sluice that for example is provided with for the open and close stream, door body, gate, valve bodies moves up and down, particularly can monitor the valve actuating mechanism with self-diagnosing function of the drive system state of the running state of the position probing, torque detection etc. of valve, the state of wear of internal thread etc.; And according to various detection information, the oneself is controlled to be the intelligent valve actuating mechanism of appropriate state by drive unit.

Background technique

The present invention relates to the valve actuating mechanism (valve actuator) that a kind of valve that makes (being referred to as " valve ") such as the sluice that for example is provided with for the open and close stream, door body, gate, valve bodies moves up and down, particularly can monitor drive system state, valve actuating mechanism and the intelligent valve actuating mechanism of the running state of the position probing, torque detection etc. of valve, the state of wear of internal thread etc. with self-diagnosing function.

All the time, all be provided with on the path that fluids such as water route, water purification plant, power station, river flow through and be used for the open and close stream and the valve of the gate of control flow rate, sluice, door body, valve body etc., adopt the valve actuating mechanism in order to make this load body action.As everyone knows, the valve actuating mechanism that is used for actuating valve develops towards the CIS direction with controller control, simultaneously, be provided with the controller (reference example such as spy open flat 11-107254 communique) that in the open and close control of valve, can carry out simple parts control.

, drive with the thread abrasion amount detecting device in the actuating device as valve, be to detect and be made as standard thread and the gap of the screw thread that uses all the time, detects the wear extent of internal thread thus.Perhaps, as the thread abrasion amount detecting device, detect the load-torque curve of screw thread, the wear extent of internal thread is calculated and is obtained in the variation of the moment of torsion that causes according to the increase along with thread pitch.This internal thread wear extent detection device is made of following parts: be rotatably installed in the axle sleeve on the housing; Spline is entrenched in the interior threaded part on this axle sleeve; Have and this internal thread engagement and axially displaceable externally threaded main shaft; The model internal thread, this model internal thread rotates integratedly being rotatably installed under the state of the load of not bearing this main shaft on the aforementioned main shaft and with aforementioned interior threaded part, simultaneously by can moving to axial below with corresponding the moving axially of wear extent of aforementioned interior threaded part; Moving block, this moving block are equipped with the bearing that is embedded in the annular slot that forms on this model internal thread periphery, and are fixed on the pilot pin guiding on the aforementioned housing and corresponding to the moving axially of aforementioned model internal thread, only can move vertically; The amount of movement sensor constitutes (the fair strictly according to the facts 8-9603 communique of reference example) by the differential transformer that detects with the displacement distance of the corresponding aforementioned moving block of internal thread wear extent of aforementioned interior threaded part.

The abnormity diagnosis, the deterioration prediction unit that are located on the known control valve unit are used to hold unusual sign in service and definite out-of-the way position, determine to repair the position, and the scope of repair that limits mortor operated valve is also judged unusual sign.This abnormity diagnosis; worsen prediction unit; be that the driving force sensor that will be located at drive portion is connected with diagnosis apparatus; suppose on control valve unit, to be equipped with the energy sensor of detection to the energize of drive portion supply; and the vibration transducer of the vibration of detection control valve unit; to be converted to specified signal from the testing signal of these sensor outputs at Date Conversion Unit; maintenance record according to permitted value that comprises each checkup item and diagnostic result; each checkup item is carried out the parsing diagnostic process of diagnostic data information; judge normally still unusually, and then worsen prediction (reference example such as spy open the 2002-130531 communique).

But, abnormity diagnosis such as existing thread abrasion amount detecting device and worsen prediction unit and all have problems, for example, device with benchmark screw thread detector gap mode, must highi degree of accuracy make the benchmark screw thread, for this benchmark screw thread of packing into must have complicated structure, there is the problem of cost up simultaneously.Moreover, detect the load-torque curve of screw thread, the thread abrasion amount detecting device of the wear extent of internal thread is calculated in the variation that increases the moment of torsion that causes according to the gap of screw thread, when analyzing the wearing and tearing of internal thread with torque waveform, and the difference between the torque waveform just often is difficult to distinguish, and existence can not detect the wear problems of internal thread accurately.

In addition, existing thread abrasion amount detecting device, also be provided with the deputy thread of giving tension force by spring in addition at the main screw thread that drives, detect and the main distance that drives between the screw thread, detect the wear extent of screw thread, but it is very difficult to measure the main distance that drives between screw thread and the deputy thread, and complex structure on the mechanical type, each part requirement high manufacturing accuracy, in addition according to inspection thread abrasion apart from detection, the dust of thread abrasion enters between the parts, causes negative effect easily, has the not high problem of testing precision credibility.

In addition, wear extent according to the internal thread of stem sleeve (stem bush) in the existing control valve unit is come the device of the amount of detector gap, infer and calculate the idle running amount in gap according to torque curve, output speed is supposed, therefore can not detect correct thread abrasion amount, and torque sensor (range sensor, strainometer) is the structure of gear-box inside of packing into, can not pack into simply, be difficult to transform at the scene operation.

In addition, existing mortor operated valve actuating mechanism is to adopt the mechanical transmission mechanism of pack into gear, cam etc. to realize that the limit of position limit, torque limit etc. detects at present, perhaps adopts the aperture meter and the gear transmission mechanism of the position of expression valve stream.Thus, existing mortor operated valve actuating mechanism is owing to adopt switch elements such as limit switch, torque switch, therefore the parts that are used to constitute the transfer part of switch element, the transfer part of valve opening etc. increase, and exist owing to the number of components problems that cause rate of fault to rise more.

In addition, the adjustment of these switch elements needs special technique, and adjustment component will be opened outer cover, easy accident and the fault that association takes place.And, because the aperture meter of valve will be converted to for example 0 °～270 ° action with total revolution (360 ° * n commentaries on classics) of hollow shaft.Therefore, the combination of reduction gear will have several, is difficult to behind the valve actuating mechanism of packing into change.

In addition, abnormity diagnosis such as existing thread abrasion amount detecting device and worsen prediction unit and all have problems, for example, device with benchmark screw thread detector gap mode, must highi degree of accuracy make the benchmark screw thread, for this benchmark screw thread of packing into complicated structure, cost up must be arranged simultaneously.Moreover, detect the load-torque curve of screw thread, calculate the thread abrasion amount detecting device of the wear extent of internal thread according to the variation that increases the moment of torsion that causes with the gap of screw thread, when analyzing the wearing and tearing of internal thread with torque waveform, and the difference between the torque waveform just often is difficult to distinguish, and existence can not detect the wear problems of internal thread accurately.

Summary of the invention

The object of the present invention is to provide a kind of valve actuating mechanism with self-diagnosing function; this valve actuating mechanism can drive by stem sleeve with moving up and down and handle sluice; the door body; valve body; the main shaft of valves such as gate; but this valve actuating mechanism electronic detection is also monitored for example position limit of valve; the limit of torque limit etc. detects; the temperature and humidity of enclosure interior detects; the wear extent of the internal thread of stem sleeve detects; status data according to motor and electronic unit worsens prediction; the wearing and tearing of drive component etc. worsen; the status data of the driving current of motor etc.; and carry out On-Board Diagnostics; simultaneously; can be corresponding and self carry out normalization and handle installing with controller with these information, perhaps corresponding and supervise the replacing processing etc. of parts with above-mentioned information.

Another object of the present invention is to provide a kind of intelligent valve actuating mechanism; in electronic detection and monitoring state data etc.; when carrying out On-Board Diagnostics; corresponding with these information and self carry out normalization and handle installing, perhaps corresponding and carry out the demonstration of part replacement, alarm etc. with above-mentioned information with built-in control circuit.

The invention provides a kind of valve actuating mechanism with self-diagnosing function, comprise main shaft, stem sleeve, transfer unit, wherein aforementioned main shaft is equipped with the valve that is used for the open and close stream, and this main shaft is in order to carry out the action of the aforementioned stream of open and close by aforementioned valve and can be supported on up or down on the housing; Aforementioned stem sleeve has and is located at the internal thread of the external thread spiro fastening on this main shaft, and rotatably is supported on the aforementioned housing; Aforementioned transfer unit has worm gear and worm screw, and aforementioned worm gear is in order to drive the rotation of this stem sleeve and to make aforementioned main shaft move up and down and be fixed on the aforementioned stem sleeve, and transmission comes the rotation of automatic drive device to aforementioned worm screw with the engagement of this worm gear, wherein,

This valve actuating mechanism also has: setting device, the setting value of the regulation that is determined in advance of set condition data; Various sensors detect the measured load of aforesaid state data respectively; First control circuit, comparison of aforementioned measured load and aforementioned setting value also judge, the information that aforementioned measured load is departed from from aforementioned setting value is made and being replied, and sends replacing, repairs processing instructions such as parts, warning; First display unit, the aforementioned measured load of demonstration sensor as aforementioned shows the aforementioned processing instruction of sending from aforementioned first control circuit simultaneously; First control panel has the communication unit that is connected with aforementioned setting device, aforementioned first display unit and aforementioned first control circuit; First controller shows aforementioned measured load by the aforementioned communication unit, simultaneously corresponding aforementioned information and by aforementioned first control circuit, make aforementioned drive unit action.

The various sensor as aforementioned that detects the aforesaid state data comprises: first tachometer generator, have encoder, and this encoder detects the aperture of the aforementioned stream of aforementioned valve for the position of detecting valve, detect the revolution of aforementioned main shaft, and aforementioned revolution simultaneously adds up; Torque sensor detects the moment of torsion of load on the aforementioned main shaft; Temperature transducer detects the temperature as the zone of the motor of aforementioned drive unit and aforementioned first control panel; Humidity transducer detects the humidity inside of aforementioned valve actuating mechanism; Vibration transducer detects the vibration of aforementioned valve actuating mechanism; The internal thread wear sensor utilizes aforementioned first tachometer generator and aforementioned torque sensor, detects the wearing and tearing of the aforementioned internal thread of aforementioned stem sleeve; Current sensor, detection drives the inrush current of aforementioned motor and detects the running number of times.

Aforementioned first control circuit is made the measured load of each measured load of aforementioned first tachometer generator, aforementioned torque sensor, aforementioned temperature sensor, aforementioned humidity transducer, aforementioned vibration transducer and aforementioned internal thread wear sensor and aforementioned currents sensor and being replied, with respect to abnormal information and the output abnormality signal, simultaneously by the aforementioned communication unit and with the aforementioned first controller exchange message, according to instruction, make aforementioned drive unit action by aforementioned first control circuit from aforementioned first controller.

Aforementioned internal thread wear sensor, the torque curve that obtains based on axial internal clearance according to aforementioned worm screw, determine the gap value between aforementioned outside thread and the aforementioned internal thread, simultaneously, detect revolution corresponding to the aforementioned stem sleeve of determined aforementioned gap amount, the aforementioned revolution of aforementioned stem sleeve be multiply by the pitch of aforementioned internal thread and carries out computing, thereby detect the wear extent of aforementioned internal thread.

Aforementioned first display unit is show to measure the aforementioned setting value that is determined in advance of the aforementioned measured load of aforesaid state data, aforesaid state data, and the liquid crystal display (LCD) of the fault data of parts and unusual various information.

Aforementioned first controller is user control, computer and Digiplex.In addition, aforementioned first controller is according to the aforementioned measured load of aforementioned temperature sensor, based on the deterioration of predetermined data prediction control as parts such as the motor of aforementioned drive unit, electronic components.Aforementioned controller is installed immersion situation in fault, the lid according to the aforementioned measured load of aforementioned humidity transducer based on distribution fault, the lid of the measurable control heater of predetermined data.

This valve actuating mechanism is owing to adopt said structure, therefore can be according to the data of various sensor inputs, carry out Stateful Inspection, for example, detect measurable slide member, be located at working life of the Sealing on the each several part according to the number of starts, detect the state that can monitor valve and actuating mechanism according to moment of torsion, can prevent owing to the motor that temperature regime causes, the deterioration of electronic unit according to temperature detection, detect according to the measurable distribution fault of humidity detecting, lid moment of torsion fault, water intrusion, combined encoder and torque sensor can detect the wearing and tearing of the internal thread of stem sleeve.Based on the data that show to monitor by self-diagnosing function, by user's controller can easily carry out for Stateful Inspection save from damage, be countermeasure drive controlling, change parts etc.And this valve actuating mechanism is mounted with first control panel, can with PERCOM peripheral communication, action control, Stateful Inspection can be controlled a plurality of valve actuating mechanisms with one first controller.This valve actuating mechanism can easily monitor operating state, set condition, fault demonstration of valve etc. by first display unit.

This has the valve actuating mechanism of self-diagnosing function owing to adopted said structure, therefore can detect in advance, show abnormality and working life, can prevent the fault of actuating mechanism, prevent that the accident that fault causes from taking place, and, change wearout parts and can only change unusual parts, the number of times of periodical repair can be reduced, operating cost can be reduced, and, can confirm the opportunity of maintenance by self-diagnosing function, the various settings of machines such as each sensor can be easily made, various status datas can be positively set, and, but, thereby reduce the expense of management with the state of user's controller drive control valve.

The present invention also provides a kind of intelligent valve actuating mechanism, comprises main shaft, stem sleeve, transfer unit, and wherein aforementioned main shaft is equipped with the valve that is used for the open and close stream, and can be supported on up or down on the housing; Aforementioned stem sleeve has and is located at the internal thread of the external thread spiro fastening on this main shaft, and rotatably is supported on the aforementioned housing; Aforementioned transfer unit has worm gear and worm screw, aforementioned worm gear is in order to drive this stem sleeve rotation and to make aforementioned main shaft move up and down and be fixed on the aforementioned stem sleeve, the engagement of aforementioned worm screw and aforementioned worm gear and the rotation of transmitting automatic drive device, wherein, this valve actuating mechanism also is provided with: reversible device is arranged on the motor that constitutes aforementioned drive unit; Setting device preestablishes the suitable setting value of status data; Various sensors detect the measured load of aforesaid state data respectively; Second control circuit, the aforementioned measured load of sensor as aforementioned made reply row operation and comparison of aforementioned measured load and aforementioned setting value are gone forward side by side, the information that aforementioned measured load is departed from from aforementioned setting value is made and being replied, make aforementioned drive unit action, the executive routine action, suitably oneself's control is according to the open and-shut mode of the aforementioned stream of aforementioned valve; Second display unit shows aforementioned measured load, and the aforementioned information that aforementioned second control circuit is sent is made and being replied simultaneously, shows to change, repair processing such as parts, warning; Second control panel has the communication unit that is connected with aforementioned setting device, aforementioned second display unit and aforementioned second control circuit; Second controller, by the aforementioned communication unit, input changes the demonstration and the aforementioned setting value of aforementioned measured load, aforementioned information, handles aforementioned drive unit simultaneously, suitably controls the open and-shut mode according to the aforementioned stream of aforementioned valve.

The various sensor as aforementioned that detect the aforesaid state data comprise: second tachometer generator, has absolute encoder, this absolute encoder detects the aperture of the aforementioned stream of aforementioned valve for the position of detecting valve, detect the revolution of aforementioned main shaft, and aforementioned revolution simultaneously adds up; Torque sensor detects the moment of torsion of load on the aforementioned main shaft; Temperature transducer; Detection is as the temperature in the zone of the motor of aforementioned drive unit and aforementioned second control panel; Humidity transducer detects the humidity inside of aforementioned valve actuating mechanism; Vibration transducer detects the vibration of aforementioned valve actuating mechanism; The internal thread wear sensor utilizes aforementioned second tachometer generator and aforementioned torque sensor, detects the wear extent of the internal thread of aforementioned stem sleeve; Current sensor, detection drives the inrush current of aforementioned motor and detects the running number of times.

Aforementioned internal thread wear sensor, the torque curve that in aforementioned second control circuit, draws based on the axial internal clearance of the aforementioned worm screw of measuring according to aforementioned torque sensor, determine the gap value between aforementioned outside thread and the aforementioned internal thread, aforementioned second tachometer generator detects the revolution corresponding to the aforementioned stem sleeve of aforementioned gap amount, and the aforementioned revolution of aforementioned stem sleeve be multiply by the pitch of aforementioned internal thread and carry out computing, detect the wear extent of aforementioned internal thread.

Aforementioned second controller is controlled the aforementioned second control circuit that is located at aforementioned second control panel on a plurality of aforementioned valve actuating mechanisms respectively respectively.Aforementioned second controller is computer and Digiplex.Aforementioned second display unit is the set condition that shows aforesaid state data, various aforementioned setting values, and the liquid crystal display (LCD) of the fault data of parts and unusual various information.

Aforementioned second controller is according to the aforementioned measured load of aforementioned tachometer generator, based on the aforesaid state data that are determined in advance, and the slide part of predictive control parts, and the various information in working life of each Sealing.In addition, aforementioned second controller is according to the aforementioned measured load of aforementioned temperature sensor, and based on the aforesaid state data that are determined in advance, predictive control is as the various information of the deterioration of parts such as the motor of aforementioned drive unit, electronic component.In addition, aforementioned second controller is according to the aforementioned measured load of aforementioned humidity transducer, and based on the aforesaid state data that are determined in advance, the distribution fault of predictive control heater, lid are installed the various information of immersion situation in fault, the lid.

This intelligent valve actuating mechanism as mentioned above, by loading absolute encoder, no matter have or not the control power supply, can both detect the position of valve, owing to do not use the aperture meter of existing mechanical transfer unit, therefore can reduce number of components, reduce cost and rate of fault, and, can detect the position of valve with various sensors, the electric current that has the motor of reversible device, moment of torsion, temperature, humidity, vibrations etc. are in control circuit, corresponding with the measured load information that detects and move according to preset program, driver, the oneself is controlled to be suitable state, but safety, set the scheduled setting value of various status datas easily and positively, by the self-diagnosing function monitored state, the saving from damage of implement device.

And, this intelligent valve actuating mechanism is owing to adopt said structure, therefore, can come the executive routine action by the second control circuit that is built in second control panel, utilize self-diagnosing function can confirm that Stateful Inspection saves from damage, promptly confirm maintenance opportunity, thereby can easily, positively set the various settings of machines such as each sensor.

And, this valve actuating mechanism is provided with absolute encoder and reversible device, when can reducing number of components, reducing cost, also can reduce rate of fault, and needn't open outer cover etc., and can easily adjust position limit and torque limit from the outside, can form the structure that outer cover need not to connect, thereby can prevent the water intrusion switch part, reduce rate of fault.

And, existing valve actuating mechanism is because the limit switch transfer part, the gear transmission by machinery constitutes to the transfer part of aperture meter by pointer, number of components is many, adjust each limit, be that setting value needs special technique, necessary periodical repair, confirm to have no abnormal, but, this valve actuating mechanism need not above-mentioned parts and operation, and existing aperture has been counted the action that total revolution of hollow shaft is transformed to 0 °～270 °, the Gear combination complexity of speed reducer, but therefore the present invention can need not the such gearing of prior art owing to adopt digital lcd to show.

Description of drawings

Fig. 1 is the roughly block diagram of expression as an embodiment's of the valve actuating mechanism of the present invention valve actuating mechanism with self-diagnosing function;

Fig. 2 is the block diagram of expression as the major component of the control circuit of the drive system of this valve actuating mechanism of Fig. 1;

Fig. 3 is the schematic representation of outward appearance of this valve actuating mechanism of presentation graphs 1;

Fig. 4 is the schematic representation of the valve actuating mechanism of the expression drive system with the manual handle of horizontal type of the present invention;

Fig. 5 is the schematic representation of the valve actuating mechanism of the expression drive system with the manual handle of longitudinal type of the present invention;

Fig. 6 is the sectional view that expression is located at an example of the torque sensor on this valve actuating mechanism;

Fig. 7 is the schematic representation of expression as another embodiment's of valve actuating mechanism of the present invention intelligent valve actuating mechanism;

Fig. 8 is the block diagram of major component of control circuit of the drive system of expression valve actuating mechanism shown in Figure 7;

Fig. 9 is the schematic representation of expression valve actuating mechanism shown in Figure 7.

Embodiment

Below, with reference to description of drawings valve actuating mechanism of the present invention.

At first, with reference to Fig. 1～Fig. 6, the valve actuating mechanism with self-diagnosing function as first embodiment of valve actuating mechanism of the present invention is described.

As shown in figures 1 and 3, this valve actuating mechanism is made of following parts: flow channel tube 16, be fixed on housing 3 that for example stream such as water route, water purification plant is connected on; Main shaft 1 is equipped with the stream 4 that is used for open and close flow channel tube 16 and the valve 5 as load bodies such as gate, sluice, door body, valve bodies that is provided with, and can be supported on the housing 3 up or down; Stem sleeve 2, have with main shaft 1 on the internal thread 11 that screws togather of the outside thread 10 that is provided with, and rotatably be supported on the housing 3; Transfer unit 24 by in order to drive internal thread 11 rotation main shaft 1 being moved up and down, and will pass to the formations such as

gear

24A, 24B, gear, speed reducer, clutch 27 of main shaft 1 from the rotation as the motor 12 of drive unit by stem sleeve 2.Gear in the transfer unit 24 has: worm gear 8, and be used to drive internal thread 11 rotation and main shaft 1 is moved up and down, be fixed on the stem sleeve 2; Worm screw 9 is with worm gear 8 engagements, the rotation of transmitting automatic drive device.

Housing 3 is made of a plurality of housing parts, is used to hold the drive system of valve 5, for example is provided with the flange part 25 of sutaining valve rod sleeve 2 rotatably and supporting section portion 26 etc.Flange part 25 and supporting section portion 26 at housing 3 across bearings such as thrust-bearing 21, rotatably are provided with axle sleeve 20 on the housing 3 by bearing 21.Stem sleeve 2 with internal thread 11 is by spline or key and be fixed on the embedding part 19 of axle sleeve 20.And the worm gear 8 that constitutes gear is fixed on the peripheral part of axle sleeve 20 by spline, key, mode such as be pressed into.Thus, under the effect of the worm screw 9 of rotating by transfer unit 24 from drive unit, the worm gear 8 of this valve actuating mechanism, axle sleeve 20 and stem sleeve 2 are with the structure rotation of one.In order on housing 3, to seal, make the water or other fluid of stream 4 can not invade in transfer unit 24 and the internal thread 11, main shaft 1 is inserted the supporting section portion 23 that logical ring-type gland packing 15 is located at housing 3, and gland packing 15 is fixed on the housing 3 by compacting part 22.This valve actuating mechanism adopts said structure, corresponding to the rotation of stem sleeve 2, and internal thread 11 rotations, along with the rotation of internal thread 11, outside thread 10 moves up and down along internal thread 11, thus main shaft 1 moves up and down.Be formed with the valve Embedded Division 18 of chimeric valve 5 on the flow channel tube 16, valve 5 is entrenched in the valve Embedded Division 18 and closes closed channel 4, and perhaps as shown in Figure 3, valve 5 is in lifting position and stream 4 is open state.

Shown in Fig. 1～3, this valve actuating mechanism has various sensors for the detected state data, that is, have: tachometer generator 7 has for the position of detecting valve the encoder of the revolution that adds up in the revolution that detects main shaft 1; Torque sensor 28, the moment of torsion of load on the detection main shaft 1;

Temperature transducer

33,34 constitutes by detecting as the thermistor of the temperature in the motor 12 of drive unit and control panel 30 zones etc.; Humidity transducer 36 detects valve actuating mechanism humidity inside; The valve opening sensor, the aperture of the stream 4 of detection valve 5; Vibration transducer 37 detects the vibration of valve actuating mechanism; The internal thread wear sensor detects the wearing and tearing of the internal thread 11 of stem sleeve 2; Current sensor 32 detects the inrush current of drive motor 12 and detects the running number of times.

This valve actuating mechanism has self-diagnosing function, as shown in Figure 1, has control circuit 6 and display unit 17 on the control panel 30.Herein, so-called self-diagnosing function is not meant to have the function that himself makes the actuating mechanism action, but according to the information that obtains by self-diagnosing function, by being located at transducer among the user control 40C and reversible device etc., according to operator's indication control actuating mechanism action.

Each checkout value that this valve actuating mechanism goes out above-mentioned various sensor, be measured load input control circuit 6, handle by control circuit 6, and with display unit 17 demonstrations.Each the aforementioned measured load of control circuit 6 usefulness comparators 60 more above-mentioned status datas and the limiting value of predefined each setting value 61 are also calculated, the information that measured load is departed from from setting value 61 is made and being replied, and sends processing instructions such as part replacement repairing, alarm.As shown in Figure 1, the controller 40C that becomes user control makes the measured load of above-mentioned various sensors and replying, and drives the motor 12 as drive unit, the open and-shut mode of the stream 4 that change valve 5 causes.And this valve actuating mechanism is made the measured load of above-mentioned various sensors and being replied, and drives motor 12 as drive unit according to the instruction of controller 40C, changes the open and-shut mode of the stream 4 that valve 5 causes.Each measured load of control circuit 6 more above-mentioned status data in comparator 60 and the limiting value of predefined each setting value 61 are also calculated, the information of measured load in the scope of setting value 61 made reply, show that processing is kept in the action under the running state of former state.

The controller 40C that becomes user control can send and proceed the measured load of various sensors made the action of replying, drive the next one action of the open and-shut mode that changes the stream 4 that is caused by valve 5 as the motor 12 of drive unit and keep processing instruction, and controls.Controller 40 also comprises computer monitor and control unit 65 and/or radio remote controller (remote controller, radio monitor) 64 except the control gear 40C of family.That is, this valve actuating mechanism can or be adjusted various status datas by controller 40 and user control 40C setting, or makes the drive unit action.Controller 40 is connected with control panel 30 in being located at a plurality of valve actuating mechanisms respectively, can monitor the running state of each valve actuating mechanism respectively, and set control.That is a plurality of valve actuating mechanisms of controller 40 may command.And display unit 17 can show set condition, and the unit failure data of valve actuating mechanism of the status data of valve actuating mechanism, various setting values.And controller 40 can be made by the 38 pairs of measured loads of communication unit that are connected with control circuit 6 and being replied, and monitors to adjust setting value 61.Motor 12, each sensor and control circuit 6 be according to customer controller 40C or be located at on-the-spot switch, from power supply by terminal equipment 45 (Fig. 4, Fig. 5) supply of electrical energy and drive.

In this valve actuating mechanism, for example 6 pairs of control circuits come the tachometer generators 7 of free encoder formation, torque sensor 28, detect the temperature transducer 33 of the temperature of motor 12, detect the temperature transducer 34 of the temperature of control panel 30, detection is as the humidity transducer 36 of the humidity in the electronic unit zone of the control panel 30 of the inside of the housing 3 that constitutes the valve actuating mechanism, detect the valve opening sensor of the aperture of valve 5 flow path 4, the vibration transducer 37 of the vibration of the drive system of detection valve actuating mechanism, the internal thread wear sensor of the wearing and tearing of the internal thread 11 of the stem sleeve 2 of outside thread 10 engagements of detection and main shaft 1, and each measured load after data 31 inputs during certain of the current sensor 32 of drive motor 12 is made and being replied, on the display unit 17 of LCD, show measured load by display switching mechanism 62, and, carry out information exchange with controller 40 by the communication unit 38 that is connected with control circuit 6.Thereby controller 40 can be confirmed the diagnosis content of valve actuating mechanism by communication unit 38, suitably set or adjust by remote controller 64 and computer 65 etc. simultaneously, also can confirm diagnosis content, drive motor 12, the open and-shut mode of operation control valve 5 by customer controller 40C.

The set positions of valve 5 can be set like this, promptly by the encoder that constitutes tachometer generator 7 by being located at the spiral gear 68 on the worm shaft 29, detect the revolution of main shaft 1, thereby detect the position of valve 5, from correctly and easily detecting the switching limit that causes by valve 5 of flow 4.Encoder adopts incremental encoder, by detecting hollow shaft, be the rotation in the worm shaft 29, such shown in symbol 41 as state output 35 and at random of the position of valve 5 can be exported, is shown.

Current sensor 32 can detect motor current, measures the number of starts, can set trigger value arbitrarily as inrush current, the inrush current that produces during the counting motor starting, and with count value as the number of starts.At this moment, inrush current is than common electric current height.Life forecast is when surpassing the predefined number of starts, gives the alarm in state output 35.Common current value is preserved management as data, beyond the scope of these data, become time dependent reference value, for example, be set at 1A, change and the current value increase in time, when for example increasing to 1.7A, common current value exceeds predetermined predetermined range, arrived the working life that is judged as Sealing, sends the output shown in symbol 41 in control circuit 6 (CPU), as the output of reporting to the police.

In addition, utilize by pack into torque sensor 28 in the worm shaft 29 of torque spring 67, can be correctly and easily detect moment of torsion output and set.As shown in Figure 6, torque sensor 28 is converted to electrical signal with the amount of movement of worm screw 9 and detects, but linearity test goes out valve 5, promptly loads on moment of torsion on the main shaft 1.That is, moment of torsion detects and detects the amount of movement of worm screw 9 by straight line type (or rotary-type) electromotive force 9 (Port テ Application シヨ), and is converted into torque value.When the measured load that opens and closes the moment of torsion of direction loads at valve 5 surpasses predefined torque value, send the alarm of state output 35.(input is deposited) stored, managed to the moment of torsion data, if beyond these data areas, reasons such as variation in time cause under the situation of moment of torsion increase having been arrived its working life that is judged as Sealing, thereby carry out the alarm output of state output 35.

And then the temperature transducer of motor 12 33 often detects the temperature of motor coils, and it is unusual and prevent to burn out etc. to detect motor.Temperature transducer 33 is to measure the parts of motor coil temperature by being attached to thermistor on the motor coil.When the measured load of temperature transducer 33 surpassed the motor coil temperature of predefined regulation, it was unusual then to be judged as moment of torsion/motor, carries out the alarm output of state output 35.

Controller 40 is according to the measured load of humidity transducer 36, can be based on predetermined data, predictive control be located at the heater on the valve actuating mechanism the distribution fault, constitute housing 3 bad, the lid of the installation of lid in the immersion situation.Humidity detecting is at housing 3, is that humidity transducer 36 is installed in the actuating mechanism machine, detects the humidity in the machine.Surpass predetermined specified humidity, for example 70% when above, then be judged as immersion in the machine, sealing gasket lost efficacy, carry out the alarm of state output 35 and export.

Display unit 17 by as the LCD of digital display, be that liquid crystal display constitutes, can show the various setting values and the running state of relevant valve actuating mechanism.The valve actuating mechanism is provided with the aperture meter 52 of band pointer, shows the aperture (Fig. 5) of valve 5 by the switch element 66 that has torque switch 50 and limit switch 51.In the display unit 17 the switching moment of torsion, the motor 12 that show the number of run of valve 5, valve 5 open and close streams 4 and be located at the temperature in the electronic unit zone on the control panel 30 and the state of wear of humidity, internal thread 11 in, also can show the setting value 61 of their upper lower limit value.And 17 pairs of data 31 from each measured load of current sensor 32, temperature transducer 33, tachometer generator 7 and torque sensor 28 of display unit are sampled, and these data 31 are shown on LCD by display switching mechanism 62.The measured load of tachometer generator 7 is sampled to data 31 by the transducer 63 of pulse/V.

The internal thread wear sensor, for example as described later, the torque curve that draws based on axial internal clearance according to worm screw 9, determine the gap value between outside thread 10 and the internal thread 11, simultaneously, detection is corresponding to the revolution of the stem sleeve 2 of determined gap value, carries out the computing that the revolution of stem sleeve 2 multiply by the pitch of internal thread, can detect the wear extent of internal thread 11.That is, when internal thread 11 when valve cuts out the open direction operation of side direction valve, the order change in torque according to the idle running portion of bump, internal thread 11, later actual loading by detecting the time of this variation, can detect the wear extent of internal thread 11.At this moment,, operating point more accurately can be detected, the mensuration precision can be improved by obtaining the count value of encoder.When the wearing and tearing more than internal thread 11 regulations of stem sleeve 2, the alarm of output state output 35 is supervised and is changed internal thread 11.Because if internal thread 11 produces inordinate wears, valve body then can occur, be that main shaft 1 falls, close the such hazardous condition of closed channel 4.

Controller 40 is according to the measured load of tachometer generator 7, based on predetermined data, the parts slide part of measurable control valve actuating mechanism and the working life of each Sealing.And controller 40 is according to the measured load of the

temperature transducer

33,34 that is made of thermistor etc., and based on predetermined data, measurable control is as the motor 12 of drive unit, the deterioration of electronic unit.Valve actuating mechanism with this self-diagnosing function can be according to the instruction of controller 40, sets desired temperature, and the humidity set point of humidity transducer 36 of wear extent setting value,

temperature transducer

33,34 of internal thread 11 of torque setting value, the internal thread wear sensor of amperometric determination value, the torque sensor 28 of current sensors 32 by setting device 39.State shows and storage data (input store data) output in the controller 40 by communication unit 38.

Below as the specific embodiment of this valve actuating mechanism, describe at the valve actuating mechanism of horizontal type handle shown in Figure 4 or Fig. 5, longitudinal type handle shown in Figure 6.The valve actuating mechanism of horizontal type or longitudinal type handle can move up and down main shaft 1 by manual handle 44.This has the valve actuating mechanism of self-diagnosing function, specifically, limit switch 51 can be changed to the tachometer generator 7 that is made of the encoder as electronic unit, and torque switch 50 can be changed to torque sensor 28.Transfer unit 24 with valve actuating mechanism of the manual handle 44 of longitudinal type includes transmission from the speed reducer of motor 12 or the manually rotation of the drive unit of handle 44, gear etc., by internal thread 11 rotations of transfer unit 24 actuate valve stem sleeves 2, thereby the main shaft 1 that has the outside thread 10 that screws togather with internal thread 11 is moved up and down.

Under the situation of the manual handle 44 of horizontal type of employing Fig. 4, when the manual handle 44 of manual rotation, be located at handle wheel hub 46 rotations on the manual handle 44, the rotation of handle wheel hub 46 is by clutch 27, pass to axle sleeve 48 by spline, the rotation of axle sleeve 48 makes internal thread 11 rotations of stem sleeve 2, thus, the main shaft 1 that has the outside thread 10 that screws togather with internal thread 11 moves up and down, and is fixed on the valve 5 open and close streams 4 on the main shaft 1.And under the situation of the manual handle (not shown) of longitudinal type of employing Fig. 5, when manual handle is rotated, be located at handle wheel hub 46 rotations on the manual handle, the rotation of handle wheel hub 46 makes internal thread 11 rotations of axle sleeve 20, thus, the main shaft 1 that has the outside thread 10 that screws togather with internal thread 11 moves up and down, and is fixed on the valve 5 open and close streams 4 on the main shaft 1.

This valve actuating mechanism by motor 12 control valve 5 switchings automatically, perhaps, can pass through the manually manual handle 44 of rotation according to the instruction of controller at the scene, and by above-mentioned delivery system, manually open and close valve 5.In this valve actuating mechanism, motor 12 is installed in by gear transmission system on the end of the worm shaft 29 that is provided with worm screw 9, is installed on the other end of worm shaft 29 as the linear potentiometer 49 (Fig. 6) of the position transducer of the amount of movement that detects worm screw 9.The valve actuating mechanism is handled the situation of stream 4, the various information such as open and-shut mode of valve 5 by control unit, detect the moment of torsion of the main shaft 1 that valve 5 is housed with torque switch 50, with the open and-shut mode of limit switch 51 detection valves 5, and, with the aperture of aperture meter 52 demonstration valves 5.

" the thread abrasion amount detecting device " of 2002-309679 number application of the applicant's application discloses the internal thread wear sensor of this valve actuating mechanism in detail, so here repeat no more.Much less, the internal thread wear sensor also can be suitable for the sensor of other type in addition.Below with reference to Fig. 5 and Fig. 6, the above-mentioned thread abrasion amount detecting device of simple declaration, i.e. internal thread wear sensor.

The applicable for example following sensor of internal thread wear sensor.The torque curve that the thread abrasion quantity sensor particularly draws based on the axial internal clearance according to worm screw 9, determine the gap value between outside thread 10 and the internal thread 11, detect revolution simultaneously with the corresponding stem sleeve 2 of determined gap value, the calculation of using the revolution of stem sleeve 2 to multiply by the pitch of internal thread 11 detects the wear extent of internal thread 11.And the available turn-sensitive devices such as rotating coder that are installed on stem sleeve 2 peripheries detect the revolution of stem sleeve 2.Sliding contact 13 on can making potentiometric detection terminal 14 and being fixed on stem sleeve 2 is relative, simply turn-sensitive device is installed on the stem sleeve 2 thus.And then, detect electrical signal by linear potentiometer 49 according to the axial internal clearance of worm screw 9 as position transducer shown in Figure 6.If it is represent foregoing, then as follows with formula.If the thread abrasion amount is made as Δ A, the pitch of internal thread 11 is made as P, and, then become following formula owing to internal thread 11 and the pairing revolution that is fixed with the stem sleeve 2 of internal thread 11 of the gap value between the outside thread 10 that the wearing and tearing of internal thread 11 cause are represented with angle of rotation α.That is Δ A=P * (α/360).

As shown in Figure 6, the linear potentiometer 49 as position transducer is contained in outer cover 53 that is fixed on the housing 3 and the lid 54 that is fixed on the outer cover 53.Linear potentiometer 49 is being supported by lid 54 and the plate 55 that is fixed on the outer cover 53, and joint 56 is housed on its end.The rotor shaft 58 that is rotatably being supported by the bearing 57 that is located on the joint 56 contacts with the end face of the worm shaft 29 of worm screw 9.Thereby, but the amount of movement of worm screw 9 passes to the detection terminal 59 of linear potentiometer 49 by rotor shaft 58 and joint 56 that load is installed with slidably.The amount of movement of the detection terminal 59 of linear potentiometer 49 is exported as electrical signal, and in the amount of movement information input controller as worm screw 9.

This valve actuating mechanism has display unit 17, this valve actuating mechanism will be input to from the measured load information of

various sensors

7,28,32,33,34,36,37 in the control circuit 6, in control circuit 6, handle these information, and carry out the numeral demonstration with the regulation number of words by display unit 17.And in this valve actuating mechanism, do not pack in main body transducer and reversible device, but they are located among the customer controller 40C are judged measured load that each detects, and can carry out the control of valve 5 according to the indication of the controller of customer controller 40C.

The following describes the establishing method of machine of the self-diagnosing function of relevant this valve actuating mechanism.This valve actuating mechanism power-on switch.Confirm the normal demonstration of the display unit 17 of valve actuating mechanism.In the set positions pattern of the position of setting valve 5, the upper lower limit value of the position of valve 5 is set as setting value 61.With the CLV ceiling limit value with respect to stream 4 of valve 5, promptly open threshold limit value (opening limit value) and set as setting value 61, simultaneously with the lower limit with respect to stream 4 of valve 5, promptly close threshold limit value (closing limit value) and set as setting value 61.Use the tachometer generator 7 that constitutes by encoder and potentiometer to detect the setting value 61 that these are opened limit value and close limit value.Tachometer generator 7 adds up, the revolution of the main shaft 1 that promptly adds up, and detects the revolution of valve actuating mechanism, as the status data in the working life of predicting slide part and each Sealing.And will be located at the CLV ceiling limit value of the moment of torsion that the valve 5 on the main shaft 1 bears and lower limit sets as the setting value 61 of the value of regulation.The CLV ceiling limit value of the torque value the when torque value the when valve that the transfer unit 24 that the main shaft 1 of valve 5 is housed is born is open is closed with valve and lower limit are set as the setting value 61 of the value of stipulating.And the CLV ceiling limit value of the temperature in the temperature of motor 12 and control panel 30 zones and lower limit are set as the setting value 61 of the value of regulation.In order to prevent since environment temperature burn motor 12 or, CLV ceiling limit value and lower limit set as setting value 61 in the temperature range of regulation because the temperature of electronic unit causes negative effects such as misoperation.In this valve actuating mechanism, when set positions, torque setting and temperature are set, for example, upper limit set value is deducted 100 pulses control, make lower limit set value be no more than upper limit set value as the upper limit of lower limit set value.In this valve actuating mechanism, normally show, and when becoming the setting value 61 of regulation, determine these settings, make display unit 17 get back to normal demonstration if confirm display unit 17.

In this valve actuating mechanism, but display unit 17 display abnormalities show.For example, when moment of torsion taking place when unusual, under the state of the on-off action of the aperture of the stream 4 that continues to show that valve 5 causes and stop valve 5, light unusual LED, unusual output relay is opened, and can send the unusual alarm of moment of torsion thus, during unusual the elimination, unusual LED extinguishes, and unusual output relay is closed.When motor 12 or electronic unit occurrence temperature are unusual, the situation unusual with moment of torsion is the same, under the state of the on-off action of aperture that continue to show the stream 4 that valve 5 causes and stop valve 5, light unusual LED, unusual output relay is opened, and the alarm that can send temperature anomaly thus is when eliminating unusually, unusual LED extinguishes, and unusual output relay is closed.This valve actuating mechanism except that above-mentioned other open mutually unusual, power voltage insufficient, thread abrasion display abnormality, battery is unusual and encoder unusual, communication abnormality also is same.

Below with reference to Fig. 7, Fig. 8 and Fig. 9, the intelligent valve actuating mechanism of second embodiment of the invention is described.

Second embodiment is with respect to first embodiment's the type with self-diagnosing function, be characterised in that constitute intelligent.Herein, so-called intelligent valve actuating mechanism is the valve actuating mechanism that further develops first embodiment, adopt the motor 12 that has as the reversible device 43 of reversible electromagnetic contactor as drive unit, reply information from various sensors, carry out the input change of setting value, while drive motor 12, the open and-shut mode of the stream 4 that suitable control valve 5 causes.Promptly, second embodiment be mounted with the motor 12 that possesses the tachometer generator 7A that constitutes by absolute encoder and reversible device 43, by control circuit 6 can oneself's control intelligent valve actuating mechanism, it is characterized in that when reaching self-diagnosing function, also the measured load that detects various status datas can be compared, judged with the setting value of setting with predetermined setting device 39, and drive motor 12, the executive routine action.

Parts that have identical function with first embodiment among second embodiment etc. are represented with same-sign, do not repeat them here.

Among second embodiment, main shaft 1, stem sleeve 2, internal thread 11 and transfer unit 24 are identical with first embodiment, but have reversible device 43 as the motor 12 of the drive unit of stem sleeve 2.

And, among second embodiment, be used to detect as the data 31A of the status data of valve actuating mechanism and the various sensors that are provided with, at torque sensor 28,

temperature transducer

33,34, humidity transducer 36, valve opening sensor, vibration transducer 37 and internal thread wear sensor, current sensor 32, use in the same manner with first embodiment, but tachometer generator 7A has the absolute encoder of the revolution that adds up.

As shown in Figure 7, this valve actuating mechanism has control circuit 6A and display unit 17A on control panel 30A, each checkout value that above-mentioned various sensor are gone out, be measured load input control circuit 6A, in control circuit 6A, handle, and show with display unit 17A.Second embodiment is owing to have the tachometer generator 7A that is made of absolute encoder, therefore original such mechanical switch unit that is made of limit switch and torque switch needn't be set, no matter have or not the control power supply, can detect the position of valve 5, and need not open lid and housing 71, the adjustment of the desired location limit and torque limit easily from the outside.And then, the set positions of valve 5 can be set like this, promptly detects the revolution of main shaft 1 with the absolute encoder that constitutes tachometer generator 7A, detects the position of valve 5, can be accurately and easily detect the switching limit that causes by valve 5 of stream 4, and in the input setting device 39.And, even, can reduce cost total obtain also can easily adjusting under the situation of revolution that the client operator of valve actuating mechanism changed expression valve 5 positions.Since be provided with in the motor 12 as operating switch be the reversible device 43 of magnetic switch, so cover on the housing 71 of switch part 72 and can not have through hole, thereby can prevent water intrusion switch part 72.

Control circuit 6A is with the limiting value of each aforementioned measured loads of comparator 60 more above-mentioned status datas and predetermined each setting value 61 and calculate, the information that measured load is departed from from setting value 61 is made and being replied, send and change processing instructions such as repairing parts, warning, simultaneously according to program behavior, by reversible device 43 as drive unit, drive motor 12, thereby the suitable open and-shut mode of the stream 4 that causes of control valve 5.And, control circuit 6A can also carry out such oneself's control, promptly, in the limiting value of each measured loads of comparator 60 more above-mentioned status datas and predetermined each setting value 61 and calculate, information in the scope of setting value 61 that measured load is in is made and being replied, and sends the action of the running state of keeping former state and keeps processing instruction.

The controller 40A that is made of computer (computer monitor) 65 and/or radio remote controller (remote controller, wireless monitor) 64 is connected with the control panel 30A on being located at a plurality of valve actuating mechanisms respectively, can control the running state of each valve actuating mechanism respectively.That is, a controller 40A can distinguish and controls a plurality of valve actuating mechanisms independently.And display unit 17A can show set condition, and the fault data of the parts of valve actuating mechanism of the status data of valve actuating mechanism, various setting values.Controller 40A can send and proceed the measured load of various sensors made the motor 12 replying, drive as drive unit, change the action of next one action of the open and-shut mode of the stream 4 that valve 5 causes and keep processing instruction, and controls.And the communication unit 38 of controller 40A by being connected with control circuit 6A made measured load and to be replied and control setting value 61, simultaneously also can be corresponding with measured load and the control subsequent action.By controller 40A or be located at on-the-spot switch, electric energy from power supply supply motor 12, each sensor and control circuit 6A, and is driven them by terminal unit 45 (Fig. 9).

Among second embodiment, for example control circuit 6A is to coming the tachometer generator 7A of free absolute encoder formation, torque sensor 28, detect the temperature transducer 33 of the temperature of motor 12, detect the temperature transducer 34 of the temperature of control panel 30A, detection is as the humidity transducer 36 of the humidity in the electronic unit zone of the control panel 30A of housing 71 inside that constitute the valve actuating mechanism, detect the valve opening sensor with respect to the aperture of stream 4 of valve 5, the vibration transducer 37 of the vibration of the drive system of detection valve actuating mechanism, the internal thread wear sensor of the wearing and tearing of the internal thread 11 of the stem sleeve 2 of outside thread 10 engagements of detection and main shaft 1, and each measured load after the data 31A input during certain of the current sensor 32 of drive motor 12 is made and being replied, on the display unit 17 of LCD, show each measured load by display switching mechanism 62, and, carry out information exchange with controller 40A by the communication unit 38 that is connected with control circuit 6A.And control circuit 6A can make the command value that controller 40A sends and reply the drive control valve actuating mechanism.Thereby controller 40A can pass through communication unit 38, confirms the diagnosis content of valve actuating mechanism, by remote controller 64 and computer 65 etc., suitably set the various status datas to control circuit 6A, or drive motor 12 turns round simultaneously.

And controller 40A is the same with controller 40, can be according to the measured load of humidity transducer 36, and based on predetermined data 31A, predictive control is located at the distribution fault of the heater on the valve actuating mechanism, the lid of

formation housing

3,71 is installed bad, the interior immersion situation of lid.

And, display unit 17A be by as the LCD of digital display, be that liquid crystal display constitutes, can confirm the various setting values and the running state of relevant valve actuating mechanism.Second embodiment is owing to there is an electronics aperture meter, therefore do not need original such according to the gear-driven aperture meter that has pointer.In the state of wear of the switching moment of torsion of the switching stream 4 that particularly shows the running number of times of valve 5, valve 5, the temperature that is located at the electronic unit zone on motor 12 and the control panel 30A and humidity, internal thread 11, also can show the setting value 61 of their high-low limit value among the display unit 17A.And display unit 17A samples to the data 31A from each measured load of current sensor 32, temperature transducer 33, tachometer generator 7A and torque sensor 28, and these data 31A shows on LCD by display switching mechanism 62.The measured load of tachometer generator 7A is by the transducer 63 of pulse/V, and 31A samples to data.

And controller 40A can be according to the measured load of tachometer generator 7A, based on predetermined data 31A, and the slide part of the parts of predictive control valve actuating mechanism and the working life of each Sealing.And, controller 40A can be according to sending indication to control circuit 6A, control circuit 6A self is according to the measured load of the

temperature transducer

33,34 that is made of thermoelectric equity, and based on predetermined data 31A, prediction is as the deterioration of the motor 12 of drive unit, electronic unit and carry out oneself and control.

Among second embodiment, the wear extent of the internal thread 11 that obtains by current sensor 32, torque sensor 28, internal thread wear sensor, the desired temperature that obtains by

temperature transducer

33,34, and the humidity set point that obtains by humidity transducer 36, at motor 12 or manually under the effect of handle 44, by transfer unit 24, identical with first embodiment with the power-transmission system of valve 5 open and close streams 4.

Among second embodiment, according to oneself's control of the indication of controller 40A or control circuit 6A, have the motor 12 of reversible device 43 by driving, automatically open and close control valve 5, and, manually rotate with manual handle 44 at the scene, manually open and close valve 5.

And among second embodiment, the internal thread wear sensor is identical with first embodiment, still, uses by spiral gear 68 and is installed in the revolution that tachometer generator 7A that the absolute encoder on stem sleeve 2 peripheries constitutes detects stem sleeve 2.The sliding contact 13 that is fixed on the stem sleeve 2 is relative with potentiometric detection terminal 14, tachometer generator 7A can be installed on the stem sleeve 2 simply thus.

Has display unit 17A among second embodiment, will be from

various sensor

7A, 28,32,33,34,36, among 37 the measured load information input control circuit 6A, in control circuit 6A, handle these information, and carry out numeral by display unit 17A with the regulation number of words and show, though it is not shown, but, also comprise the power switch that makes power supply unit with transducer, the improper stop switch that the valve actuating mechanism stops suddenly, be used for the distant place communication switch of CCU exchange message etc., also comprise the reversible device 43 that is located at by on the motor 12 of threephase AC action.The information that second embodiment obtains according to self-diagnosing function, the action by being located at transducer in the main body and reversible device 43 control actuating mechanisms also has the battery 69 that is used for data backup, the battery 70 that is used to show etc. in housing 71.

Because the establishing method of the equipment of relevant self-diagnosing function roughly is basically the same as those in the first embodiment among second embodiment, therefore repeat no more.

Among second embodiment, use the tachometer generator 7A that constitutes by absolute encoder to detect the setting value 61 opening limit value and close limit value of valve 5 with respect to stream 4.Tachometer generator 7A adds up, the revolution of the main shaft 1 that adds up, and detects the revolution of main shaft 1, becomes the status data in the working life of prediction slide part and each Sealing.Among second embodiment, set the sense of rotation make main shaft 1, be the direction rotation of valve 5 open streams 4, perhaps, then, set the LS pattern to the direction rotation of closing closed channel 4.And then, set telecommunication in a second embodiment, carry out aforesaid operations, after the setting processing of various status datas finished, display unit 17 was got back to normal demonstration.

Claims

1, a kind of valve actuating mechanism with self-diagnosing function, comprise main shaft, stem sleeve, transfer unit, wherein aforementioned main shaft is equipped with the valve that is used for the open and close stream, and this main shaft is in order to carry out the action of the aforementioned stream of open and close by aforementioned valve and can be supported on up or down on the housing; Aforementioned stem sleeve has and is located at the internal thread of the external thread spiro fastening on this main shaft, and rotatably is supported on the aforementioned housing; Aforementioned transfer unit has worm gear and worm screw, and aforementioned worm gear is in order to drive the rotation of this stem sleeve and to make aforementioned main shaft move up and down and be fixed on the aforementioned stem sleeve, and transmission comes the rotation of automatic drive device to aforementioned worm screw with the engagement of this worm gear, it is characterized in that,

2, the valve actuating mechanism with self-diagnosing function as claimed in claim 1, it is characterized in that, the sensor as aforementioned that detects the aforesaid state data comprises: first tachometer generator, has encoder, this encoder detects the aperture of the aforementioned stream of aforementioned valve for the position of detecting valve, detect the revolution of aforementioned main shaft, aforementioned revolution simultaneously adds up; Torque sensor detects the moment of torsion of load on the aforementioned main shaft; Temperature transducer detects the temperature as the zone of the motor of aforementioned drive unit and aforementioned first control panel; Humidity transducer detects the humidity inside of aforementioned valve actuating mechanism; Vibration transducer detects the vibration of aforementioned valve actuating mechanism; The internal thread wear sensor utilizes aforementioned first tachometer generator and aforementioned torque sensor, detects the wearing and tearing of the aforementioned internal thread of aforementioned stem sleeve; Current sensor, detection drives the inrush current of aforementioned motor and detects the running number of times.

3, valve actuating mechanism with self-diagnosing function as claimed in claim 2, it is characterized in that, aforementioned first control circuit comparison of aforementioned first tachometer generator, aforementioned torque sensor, the aforementioned temperature sensor, aforementioned humidity transducer, aforementioned vibration transducer, the aforementioned measured load of aforementioned internal thread wear sensor and aforementioned currents sensor and aforementioned setting value are also judged, with respect to abnormal information and the output abnormality signal, simultaneously by the aforementioned communication unit and with the aforementioned first controller exchange message, according to instruction, make aforementioned drive unit action by aforementioned first control circuit from aforementioned first controller.

4, valve actuating mechanism with self-diagnosing function as claimed in claim 2, it is characterized in that, aforementioned internal thread wear sensor, the torque curve that obtains based on the axial internal clearance of the aforementioned worm screw of in aforementioned first control circuit, measuring according to aforementioned torque sensor, determine the gap value between aforementioned outside thread and the aforementioned internal thread, simultaneously, detect the revolution of measuring by aforementioned first tachometer generator corresponding to the aforementioned stem sleeve of aforementioned gap amount, the aforementioned revolution of aforementioned stem sleeve be multiply by the pitch of aforementioned internal thread and carries out computing, thereby detect the wear extent of aforementioned internal thread.

5, the valve actuating mechanism with self-diagnosing function as claimed in claim 1, it is characterized in that aforementioned first display unit is show to measure the aforementioned setting value that is determined in advance of the aforementioned measured load of aforesaid state data, aforesaid state data, and the liquid crystal display of the fault data of parts and unusual various information.

6, the valve actuating mechanism with self-diagnosing function as claimed in claim 2 is characterized in that, aforementioned first controller is user control, computer and Digiplex.

7, the valve actuating mechanism with self-diagnosing function as claimed in claim 6, it is characterized in that, aforementioned first controller is according to the aforementioned measured load of aforementioned temperature sensor, based on the aforesaid state data that are determined in advance, predictive control is as the various information of the deterioration of parts such as the motor of aforementioned drive unit, electronic component.

8, the valve actuating mechanism with self-diagnosing function as claimed in claim 6, it is characterized in that, aforementioned first controller is according to the aforementioned measured load of aforementioned humidity transducer, based on the aforesaid state data that are determined in advance, the distribution fault of predictive control heater, lid are installed the various information of immersion in fault, the lid.

9, a kind of intelligent valve actuating mechanism comprises main shaft, stem sleeve, transfer unit, and wherein aforementioned main shaft is equipped with the valve that is used for the open and close stream, and can be supported on up or down on the housing; Aforementioned stem sleeve has and is located at the internal thread of the external thread spiro fastening on this main shaft, and rotatably is supported on the aforementioned housing; Aforementioned transfer unit has worm gear and worm screw, and aforementioned worm gear is in order to drive the rotation of this stem sleeve and to make aforementioned main shaft move up and down and be fixed on the aforementioned stem sleeve, and transmission comes the rotation of automatic drive device to aforementioned worm screw with the engagement of aforementioned worm gear, it is characterized in that,

This valve actuating mechanism also is provided with: reversible device is arranged on the motor that constitutes aforementioned drive unit; Setting device preestablishes the suitable setting value of status data; Various sensors detect the measured load of aforesaid state data respectively; Second control circuit, the aforementioned measured load of sensor as aforementioned made reply row operation and comparison of aforementioned measured load and aforementioned setting value are gone forward side by side, the information that aforementioned measured load is departed from from aforementioned setting value is made and being replied, make aforementioned drive unit action, the executive routine action, suitably oneself's control is according to the open and-shut mode of the aforementioned stream of aforementioned valve; Second display unit shows aforementioned measured load, and the aforementioned information that aforementioned second control circuit is sent is made and being replied simultaneously, shows to change, repair processing such as parts, warning; Second control panel has the communication unit that is connected with aforementioned setting device, aforementioned second display unit and aforementioned second control circuit; Second controller, by the aforementioned communication unit, input changes the demonstration and the aforementioned setting value of aforementioned measured load, aforementioned information, handles aforementioned drive unit simultaneously, suitably controls the open and-shut mode according to the aforementioned stream of aforementioned valve.

10, intelligent valve actuating mechanism as claimed in claim 9, it is characterized in that, the sensor as aforementioned that detects the aforesaid state data comprises: second tachometer generator, has absolute encoder, thereby this absolute encoder detects the aperture of the aforementioned stream of aforementioned valve for the position of detecting valve, and detecting the revolution of aforementioned main shaft, aforementioned revolution simultaneously adds up; Torque sensor detects the moment of torsion of load on the aforementioned main shaft; Temperature transducer; Detection is as the temperature in the zone of the motor of aforementioned drive unit and aforementioned second control panel; Humidity transducer detects the humidity inside of aforementioned valve actuating mechanism; Vibration transducer detects the vibration of aforementioned valve actuating mechanism; The internal thread wear sensor utilizes aforementioned second tachometer generator and aforementioned torque sensor, detects the wear extent of the internal thread of aforementioned stem sleeve; Current sensor, detection drives the inrush current of aforementioned motor and detects the running number of times.

11, intelligent valve actuating mechanism as claimed in claim 10, it is characterized in that, aforementioned internal thread wear sensor, the torque curve that in aforementioned second control circuit, draws based on the axial internal clearance of the aforementioned worm screw of measuring according to aforementioned torque sensor, determine the gap value between aforementioned outside thread and the aforementioned internal thread, aforementioned second tachometer generator detects the revolution corresponding to the aforementioned stem sleeve of aforementioned gap amount, and the aforementioned revolution of aforementioned stem sleeve be multiply by the pitch of aforementioned internal thread and carry out computing, detect the wear extent of aforementioned internal thread.

12, intelligent valve actuating mechanism as claimed in claim 9 is characterized in that, aforementioned second controller is controlled the aforementioned second control circuit that is located at aforementioned second control panel on a plurality of aforementioned valve actuating mechanisms respectively respectively.

13, intelligent valve actuating mechanism as claimed in claim 9 is characterized in that, aforementioned second controller is computer and Digiplex.

14, intelligent valve actuating mechanism as claimed in claim 9 is characterized in that, aforementioned second display unit is the set condition that shows aforesaid state data, various aforementioned setting values, and the liquid crystal display of the fault data of parts and unusual various information.

15, intelligent valve actuating mechanism as claimed in claim 10, it is characterized in that, aforementioned second controller is according to the aforementioned measured load of aforementioned tachometer generator, based on the aforesaid state data that are determined in advance, and the slide part of predictive control parts, and the various information in working life of each Sealing.

16, intelligent valve actuating mechanism as claimed in claim 10, it is characterized in that, aforementioned second controller is according to the aforementioned measured load of aforementioned temperature sensor, based on the aforesaid state data that are determined in advance, predictive control is as the various information of the deterioration of parts such as the motor of aforementioned drive unit, electronic component.

17, intelligent valve actuating mechanism as claimed in claim 10, it is characterized in that, aforementioned second controller is according to the aforementioned measured load of aforementioned humidity transducer, based on the aforesaid state data that are determined in advance, the distribution fault of predictive control heater, lid are installed the various information of immersion situation in fault, the lid.