CN201748019U - Self check type intelligent valve electric actuator - Google Patents
Self check type intelligent valve electric actuator Download PDFInfo
- Publication number
- CN201748019U CN201748019U CN2010205180703U CN201020518070U CN201748019U CN 201748019 U CN201748019 U CN 201748019U CN 2010205180703 U CN2010205180703 U CN 2010205180703U CN 201020518070 U CN201020518070 U CN 201020518070U CN 201748019 U CN201748019 U CN 201748019U
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- valve
- electric actuator
- motor
- central processing
- torsion
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Abstract
The utility model relates to a valve electric actuator, particularly to a self check type intelligent valve electric actuator having self check functions. A speed and position detection unit and a torsion detection unit are arranged in a control circuit, self check signals can be send at regular time for conducting self check under the control of a central processing unit, a valve is driven by an actuator drive unit to act, and the load torsion of a motor output shaft is detected by the torsion detection unit when the valve is started. When the load torsion of the motor output shaft is bigger than a certain value, the valve is considered to be clamped dead, a display device displays failure information, and the failure information is reported to a monitoring center by a remote data communication interface to inform a repair worker to repair or exchange the valve. Manual check is avoided, work intensity is reduced, the electric actuator and the valve are ensured to be always in a normal state, and safe production is ensured.
Description
Technical field
The utility model relates to a kind of valve electric actuator, particularly has the self-checking type self-checking type self-inspection type intelligent electric actuator for valve of self-checking function.
Background technique
Electric actuator is a power with the electric energy, accepts the standard signal (analog amount and data volume) of regulator.The common valve electric actuator of electric actuator, comprise casing, motor, handwheel, live axle, torch moving releasing mechanism, worm gear and the worm screw adaptive with worm gear, the output shaft interlock of worm screw and motor, one end of live axle is the control end that directly cooperates with valve, the other end is provided with above-mentioned handwheel, but both are only fixing in the vertical, can each autokinesis on the circumference, worm gear set be located on the live axle and worm gear and live axle between be provided with the gap.Become corresponding mechanical displacement (corner, straight line or change) by the standard signal that regulator is come more and change performance variable (modulating valve, air door, baffle opening etc.) automatically, to reach the purpose that controlled variable (temperature, pressure, flow, liquid level etc.) is automatically adjusted, production process is undertaken by pre-provisioning request.So electric actuator all has a significant impact the quality of safe operation, reliability and the regulation quality of automatic regulating system.Electric actuator also is widely used in the conveyance conduits such as PetroChina Company Limited. of petroleum chemical enterprise, rock gas, and these pipeline major parts are in the field, unmanned, and also the frequency of its opening and closing is very low.This working method of being failure to actuate for a long time causes valve and final controlling element normally not to open and close probably, promptly block easily after valve is in unlatching or closed condition for a long time, and this fault may be brought immeasurable loss.Take place for fear of this situation, enterprise need arrange personnel's periodical inspection usually, but this mode labor intensity is big, and the function operation environment is abominable, and efficient is low.Therefore, needed a kind of self-inspection type intelligent electric actuator for valve badly, can regular self-examinations, guarantee that electric actuator and valve are in normal state constantly, ensure safety in production.
Summary of the invention
The purpose of this utility model is to provide in order to overcome the deficiencies in the prior art the self-inspection type intelligent electric actuator for valve that need not to arrange personnel's periodical inspection.
For achieving the above object, the utility model discloses a kind of self-inspection type intelligent electric actuator for valve, comprise casing, motor, handwheel, live axle, torch moves releasing mechanism, worm gear and worm screw and the control circuit adaptive with worm gear, the output shaft interlock of described worm screw and motor, described handwheel is located at live axle one end, described worm gear set be located on the live axle and worm gear and live axle between be provided with the gap, described control circuit comprises central processing unit, actuator's driver element and display unit, it is characterized in that: described control circuit also comprises speed and position detection unit and torque detecting unit, described speed and position detection unit are used to detect motor speed and revolution, and testing result is delivered to central processing unit; Described torque detecting unit is used to detect the moment of torsion of load suffered on the motor output shaft, and testing result is delivered to central processing unit; Described central processing unit comprises timer, data processing system, the torque threshold storage, valve location storage and comparator, described timer is used to produce the time cardinal sum timing of various periodicity actions, described torque threshold storage is used to store the maximum value of load torque suffered on the motor output shaft, just think that as surpassing this value valve is stuck, described valve location storage is used to store the position when early gate, described comparator is used for the size of more real-time detected load torque and torque threshold storage numerical value, and described control circuit also is provided with remote data communication mouth and/or infrared data communication port.
Compared with prior art, the self-inspection type intelligent electric actuator for valve of said structure, under the control of central processing unit, can regularly send self-test signal, drive valve event by actuator's driver element, and in starting the valve process, detect suffered load torque on the motor output shaft by torque detecting unit, if load torque suffered on the motor output shaft is greater than the numerical value in the described torque threshold storage, just think that valve is stuck, display unit shows fault message, and fault message reported to Surveillance center by the remote data communication mouth, notify the maintenance man come maintenance or change.
Below in conjunction with the accompanying drawings and the specific embodiments the utility model is further described.
Description of drawings
Fig. 1 is the utility model embodiment electric appliance control box STRUCTURE DECOMPOSITION schematic representation.
Fig. 2 is the moving releasing mechanism structure sectional view of the utility model torch.
Fig. 3 is Fig. 2 A-A direction structure sectional view.
Fig. 4 is the transversal internal structure schematic representation of Fig. 1.
Fig. 5 is the enlarged view of I portion among Fig. 1.
Fig. 6 is the utility model pressure disk example structure schematic representation.
Fig. 7 is Fig. 6 A-A direction structure sectional view.
Fig. 8 is the utility model embodiment schematic block circuit diagram.
Fig. 9 is the utility model embodiment circuit theory sketch.
Embodiment
Self-inspection type intelligent electric actuator for valve comprises mechanical part and electronic section.Wherein mechanical part such as Fig. 1-shown in Figure 5, comprise casing 1, motor 2, handwheel 3, live axle 4, torch moves releasing mechanism, worm gear 5 and the worm screw 6 adaptive with worm gear 5, the output shaft interlock of described worm screw 6 and motor 2, described handwheel 3 is located at live axle 4 one ends, described worm gear 5 be sheathed on the live axle 4 and worm gear 5 and live axle 4 between be provided with the gap, this electric actuator also comprises analytical equipment and display unit, described display unit comprises automatically controlled mainboard 7 and the liquid crystal display panel 71 that is connected with automatically controlled mainboard 7, the electronic section element is installed on the automatically controlled mainboard 7, and described motor 2 is controlled by the control circuit on the automatically controlled mainboard 7.
As shown in Figure 1 and Figure 2, in the present embodiment, also be provided with driving gear 41, driven gear 411, gear shaft 4111 and incremental encoder 72, described driving gear 41 sheathed with live axle 4 on, described driven gear 411 and driving gear 41 interlocks, described gear shaft 4,111 one ends and driven gear 411 interlocks, the other end is inserted in the incremental encoder 72, and described incremental encoder 72 combines with control circuit and is used to detect live axle 4 rotating speeds and revolution.
In the present embodiment, driving gear 41, driven gear 411, gear shaft 4111 and incremental encoder 72 and display unit are located in the electric appliance control box 8, described electric appliance control box 8 is connected with casing 1, described motor power plate 21 is located in the electric appliance control box 8, one end and casing 1 are fixing, the other end and automatically controlled mainboard 7 are fixing by pin 22, described incremental encoder 72 is located at electric appliance control box 8 the inners and is placed the side of motor power plate 21, and described automatically controlled mainboard 7 is located at the outer end of electric appliance control box 8 and is electrically connected with motor power plate 21.Certainly, we also can not be provided with electric appliance control box 8, each parts can be arranged in the casing 1 originally, and each position component concerns and the volume of casing 1 but will readjust.
As Fig. 2, shown in Figure 3, in the present embodiment, mechanical part also includes the moving releasing mechanism of torch, the moving releasing mechanism of torch comprises handwheel axle sleeve 31, clutch cover 42 and clutch cover operating device 9, described handwheel axle sleeve 31 1 ends and handwheel 3 are fixing, the other end is sheathed on the live axle 4, described clutch cover 42 fixed covers are located on the live axle 4, described clutch cover 42 upper ends can cooperate with handwheel axle sleeve 31 to realize the interlock of handwheel 3 and live axle 4, and the lower end can cooperate with worm gear 5 to realize the interlock of motor 2 and live axle 4.
In the present embodiment, clutch cover operating device 9 comprises switching handle 91, volute spring 92, shifting block 93, the supporting releasing mechanism, cam cover 94 and Returnning spring 95, described volute spring 92 is fixed on the casing 1, one side connects switches handle 91, opposite side connects shifting block 93, be provided with reseting cavity 951 between described handwheel axle sleeve 31 and the described clutch cover 42, described Returnning spring 95 is located in the reseting cavity 951, one end is conflicted with the spring seat 952 that is located on the live axle 4, one end and clutch cover 42 are conflicted, described cam cover 94 is sheathed on the clutch cover 42, and clutch cover 42 is provided with flange 421 and conflicts with cam cover 94, described casing 1 is provided with cam cover supporting parts, this cam cover supporting parts is a safety pin 941 of fixing with casing 1, cam cover 94 is provided with the cavity 942 adaptive with safety pin 941, described shifting block 93 can be conflicted and support cam cover 94 realizes that the interlock of clutch covers 42 and handwheel axle sleeve 31, described supporting releasing mechanism control shifting block 93 conflict or break away from the interlock that cam cover 94 is realized the interlock of clutch covers 42 and handwheel axle sleeve 31 or clutch cover 42 and worm gear 5.
In the present embodiment, the supporting releasing mechanism comprises anchor plate 96 and pressure spring 97, described shifting block 93 is hinged with casing 1, described worm gear 5 is provided with short slot 51 near the marginal surface of clutch cover 42 1 sides, described short slot 51 is crescent shape, described anchor plate 96 is fixed with shifting block 93 and an end is conflicted on the working ends that shifting block 93 and cam cover 94 are conflicted, the other end is conflicted with short slot 51 and is separated cooperation, described pressure spring 97 1 ends are conflicted with the other end of shifting block 93 relative working ends, and the other end and anchor plate 96 are conflicted.Certainly, we shifting block 93 also can be set is slippage up and down.
In the present embodiment, clutch cover 42 is arranged with projection 422 near the end face of handwheel axle sleeve 31, the described handwheel axle sleeve 31 corresponding fixture blocks 311 that are arranged with, described projection 422 can place fixture block 311 sides and link to realize the interlock of clutch cover 42 and handwheel axle sleeve 31 with fixture block 311, clutch cover 42 is arranged with finger 423 near the end face of worm gear 5, described worm gear 5 corresponding being arranged with are stirred pin 52, described finger 423 can place stir pin 52 sides and with stir pin 52 interlock to realize the interlock of clutch cover 42 and worm gear 5.Certainly, we also can adopt the cooperation that the cooperation of all adopting the projection fixture block or finger stir pin or the cooperation of fixture block draw-in groove to realize both interlock settings.
Electronic section is shown in Fig. 8,9 in the present embodiment, comprise central processing unit, actuator's driver element and display unit, speed and position detection unit and torque detecting unit, described speed and position detection unit are used to detect motor speed and revolution, in this specific embodiment, select incremental encoder 72 for use, and by driving gear 41, driven gear 411 and live axle 4 formation interlocks, rotating speed is proportional, and the output of incremental encoder 72 is connected to central processing unit.Central processing unit comprises timer, data processing system, torque threshold storage, valve location storage and comparator, described timer is used to produce the time cardinal sum timing of various periodicity actions, as the number of turns of regularly changeing from the cycle of patrolling and examining or unit time motor etc., the maximum value that described torque threshold storage is used to store load torque suffered on the motor output shaft is as the foundation of judging that valve is whether stuck.In starting the valve process, detect suffered load torque on the motor output shaft by torque detecting unit, if load torque suffered on the motor output shaft compares greater than the numerical value in the described torque threshold storage through comparator, just think that valve is stuck, display unit shows fault message.Described valve location storage is used to store the position when early gate, rotates the number of turns and directions by record live axle 4, can obtain valve location information in conjunction with the stroke of every circle valve.Data processing system is made up of microprocessor and peripheral cell thereof, microprocessor selects for use the SOC single-chip as core in the present embodiment, SOC (System-on-a-chip), it is system level chip, integrated digital circuit on a chip, analog circut, RF, multiple circuit such as storage and interface circuit, to realize image processing, speech processing, multiple function such as communication function and data processing, so function is very powerful, level of integration is very high, its powerful system intergration function be embodied in fully product function extensively on, less use electronic component and complicated electronics line, guarantee that final controlling element has the electronic control reliability of height.Timer, data processing system, torque threshold storage, valve location storage are made of SOC single-chip internal storage, and timer is realized by internal processes.The moment of torsion of motor can obtain by measuring motor working current, but this mode error is big, and speed of response is slow, is difficult to adapt to this occasion.In this specific embodiment, described torque detecting unit comprises moment of torsion Detecting element and moment of torsion testing circuit, described moment of torsion Detecting element is made of the pressure disk 10 that the center is provided with circular hole, as shown in Figure 3, described pressure disk 10 fixedly installs, described worm screw 6 passes from pressure disk 10 center holes, worm screw 6 is provided with worm screw axle sleeve 11 and bearing, pressure disk 10 is provided with foil gauge 12, described worm screw axle sleeve 11 and bearing are clamped the inner edge of pressure disk 10, described foil gauge is as the resistance bridge brachium pontis, and described resistance bridge and amplifier are formed described moment of torsion testing circuit.Shown in Fig. 7,8, in order to improve detection sensitivity, the structure of pressure disk 10 is preferably integral body in the form of a ring, be provided with the tongue piece 101 at sensing center on the inner ring symmetrically, foil gauge 12 is arranged on each tongue piece 101 symmetrically, all tongue piece front ends surround circular hole and pass for worm screw 6, and described axle sleeve and bearing are clamped the end tongue of pressure disk 10.In the moment that starts valve, worm screw 4 will have small axial motion like this, make tongue piece 101 that deformation take place, and foil gauge sends corresponding electrical signal, records moment of torsion thus.It is fast that this mode has speed of response, good linearity, advantage accurately.
In order better to realize centralized control and to adapt with automation control system, and will patrol and examine the result certainly and be sent to Surveillance center, and Surveillance center's telecontrol electric actuator, the telecommunication mouth that also is provided with bussing technique in this control circuit has solved this problem, when electric actuator and the control of upper-position unit real-world bus, can adopt traditional many cables control mode again.Intelligent electric activator adopts standard interface (RS485, RS232) to carry out communication, and signal and processor circuit photoelectricity are isolated, and has guaranteed the safe operation of electric actuator.Electric actuator realizes that bus control makes things convenient for the user to utilize computer, configuration software and I/O module to make up the control system of economical and efficient.
In this final controlling element, also adopted advanced infrared remote sensing technology, be provided with the infrared signal receiving port, therefore can just can carry out human-computer dialogue by dialog box need not to open under the situation of final controlling element case lid.The setting device of this machine is in various operating mode occasions, even dangerous situation, also can be like a cork to final controlling element carry out that moment is set, switch is spacing, the adjustment of control and Presentation Function sets.
Claims (3)
1. self-inspection type intelligent electric actuator for valve, comprise casing, motor, handwheel, live axle, torch moves releasing mechanism, worm gear and worm screw and the control circuit adaptive with worm gear, the output shaft interlock of described worm screw and motor, described handwheel is located at live axle one end, described worm gear set be located on the live axle and worm gear and live axle between be provided with the gap, described control circuit comprises central processing unit, actuator's driver element and display unit, it is characterized in that: described control circuit also comprises speed and position detection unit and torque detecting unit, described speed and position detection unit are used to detect motor speed and revolution, and testing result is delivered to central processing unit; Described torque detecting unit is used to detect the moment of torsion of load suffered on the motor output shaft, and testing result is delivered to central processing unit; Described central processing unit comprises timer, data processing system, the torque threshold storage, valve location storage and comparator, described timer is used to produce the time cardinal sum timing of various periodicity actions, described torque threshold storage is used to store the maximum value of load torque suffered on the motor output shaft, just think that as surpassing this value valve is stuck, described valve location storage is used to store the position when early gate, described comparator is used for the size of more real-time detected load torque and torque threshold storage numerical value, and described control circuit also is provided with remote data communication mouth and/or infrared data communication port.
2. self-inspection type intelligent electric actuator for valve according to claim 1, it is characterized in that: described central processing unit is made up of microprocessor and peripheral cell thereof, Detecting element in described speed and the position detection unit is selected incremental encoder for use, the incremental encoder rotating speed is directly proportional with motor speed, and the output of incremental encoder is connected with central processing unit; Described torque detecting unit comprises moment of torsion Detecting element and moment of torsion testing circuit, described moment of torsion Detecting element is made of the pressure disk that the center is provided with circular hole, described pressure disk fixedly installs, described worm screw passes from the pressure disk center hole, pressure disk is provided with foil gauge, the inner edge both sides of described pressure disk are by clamping to the member of fixedlying connected with worm shaft, and described foil gauge is as the resistance bridge brachium pontis, and described resistance bridge and amplifier are formed described moment of torsion testing circuit.
3. self-inspection type intelligent electric actuator for valve according to claim 1 and 2, it is characterized in that: also be provided with the motor overheating detection unit, described motor overheating detection unit comprises a bimetallic strip and is subjected to the electric contact of described bimetallic strip control, described bimetallic strip is arranged on the position that can sense motor temperature, and described electric contact output is connected with central processing unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205180703U CN201748019U (en) | 2010-09-06 | 2010-09-06 | Self check type intelligent valve electric actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205180703U CN201748019U (en) | 2010-09-06 | 2010-09-06 | Self check type intelligent valve electric actuator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201748019U true CN201748019U (en) | 2011-02-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205180703U Expired - Lifetime CN201748019U (en) | 2010-09-06 | 2010-09-06 | Self check type intelligent valve electric actuator |
Country Status (1)
| Country | Link |
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| CN (1) | CN201748019U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101907195A (en) * | 2010-09-06 | 2010-12-08 | 特福隆集团有限公司 | Self-inspection type intelligent electric actuator for valve |
| CN106015719A (en) * | 2016-06-06 | 2016-10-12 | 淮南市宜留机械科技有限公司 | High-pressure fluid splashing based safety protection device for back-pressure valve |
| CN106715904A (en) * | 2014-09-22 | 2017-05-24 | 惠而浦股份有限公司 | Improper opening detection method of multiple suction reciprocating compressor suction valve |
-
2010
- 2010-09-06 CN CN2010205180703U patent/CN201748019U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101907195A (en) * | 2010-09-06 | 2010-12-08 | 特福隆集团有限公司 | Self-inspection type intelligent electric actuator for valve |
| CN106715904A (en) * | 2014-09-22 | 2017-05-24 | 惠而浦股份有限公司 | Improper opening detection method of multiple suction reciprocating compressor suction valve |
| CN106715904B (en) * | 2014-09-22 | 2020-01-03 | 恩布拉科压缩机工业和制冷解决方案有限公司 | Method for detecting incorrect opening of suction valve of multi-suction reciprocating compressor |
| CN106015719A (en) * | 2016-06-06 | 2016-10-12 | 淮南市宜留机械科技有限公司 | High-pressure fluid splashing based safety protection device for back-pressure valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110216 Effective date of abandoning: 20120404 |