CN201021907Y - Torque measurement device for valve executor - Google Patents
Torque measurement device for valve executor Download PDFInfo
- Publication number
- CN201021907Y CN201021907Y CNU2006201250306U CN200620125030U CN201021907Y CN 201021907 Y CN201021907 Y CN 201021907Y CN U2006201250306 U CNU2006201250306 U CN U2006201250306U CN 200620125030 U CN200620125030 U CN 200620125030U CN 201021907 Y CN201021907 Y CN 201021907Y
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- torque
- valve
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Abstract
The utility model discloses a torque measuring device applied in electric valve actuators, which comprises a worm gear, a worm and a torque sensing device. The utility model is characterized in that the torque sensing device comprises a sensing iron core, a sensing coil and a sensing and measuring circuit, wherein the sensing iron core is arranged in the sensing coil and is fixedly connected with the worm. When the utility model is working, the worm is driven by the counteracting force of the worm gear to generate a micro axial shift or deformation to drive the iron core to move and make the signal voltage generated by the sensing coil change accordingly. The signal voltage passes an electronic circuit for demodulation, shaping and magnification and then is sent to the electronic control unit of a master control board as the output signal of the torque sensing device to realize the measurement and control of the torque of a valve. The measuring device with a variable-inductance torque sensing device can accurately measure the instantaneous torque value of the valve in work, the measuring range is wide, and the utility model is high in sensibility and reliable in work.
Description
Affiliated technical field
The utility model relates to a kind of torque measuring device, relates in particular to a kind of torque measuring device that is used for valve actuator.
Background technology
Usually said valve actuator comprises the handwheel that is used for manually opened valve, and by motor-driven electric valve actuator.Wherein, electric valve actuator is used very extensive as valve actuator in fields such as oil, chemical industry, water treatments.Common valve actuator does not have the force moment protection function, occurs easily in the work that valve is killed, the situation of moment overrate, causes the damage of valve.A crucial function of electric valve actuator is to have the force moment protection function, by the moment in the valve operation process is carried out necessary qualification, to prevent that valve is because of excessive damage of twisting resistance distance.
Utility model patent " valve computer electric device " (patent publication No.: CN87214208U) disclose a kind of device that the electrically operated valve torsional moment is detected and controls, its torque master is made of butterfly spring assembly, counting chi, torque master, adopts the method for mechanical pulsing counting to change apart from measuring.Though this torque measuring device is simple in structure, because its detected torque value is a discrete magnitude, measuring accuracy and control accuracy are lower, and the moment that therefore can not be advantageously applied to valve actuator is measured and control.
The degree of accuracy of valve torgue measurement is one of valve actuator key factor of fully realizing the moment defencive function, thereby, how to carry out accurate valve torgue measurement, be to be badly in need of the technical problem underlying that solves in the valve actuator technical development process always.
The utility model content
Technical problem to be solved in the utility model provides a kind of torque measuring device of the instantaneous moment values can accurately measure valve working the time.
For solving above technical matters, the utility model has adopted following technical scheme:
A kind of torque measuring device that is used for electric valve actuator comprises worm gear, worm screw, moment sensor; Described moment sensing device is made up of inductive iron core, inductive coil and measurement of inductance circuit; Inductive iron core places in the inductive coil, and connects with worm screw; Inductive coil is made of two windings, and one of them is the benchmark winding, produces alternating voltage, produces magnetic field around coil; Another produces signal voltage for the induction winding; Two windings of inductive coil are connected with the measurement of inductance circuit respectively.
When the opening and closing valve, driven by motor worm screw, worm gear rotate, thereby drive the valve that links with it by worm-wheel shaft.The loading moment that is applied on the valve acts on the worm gear, acts on reacting force on the worm screw by worm gear, and worm screw will produce the axial displacement of trace; The iron core of the inductive coil inside that is fixedly connected with worm screw produces axial displacement synchronously with worm screw; The mobile signal voltage that causes inductive coil to produce of iron core changes thereupon; This signal voltage by metering circuit detection, shaping and amplification after, deliver to the ECU (Electrical Control Unit) of electrically operated valve master control board as the output signal of torque sensor.
Because the utility model has adopted variable inductance formula moment sensor, measure the work moment that acts on worm-wheel shaft indirectly by the axial displacement of measuring worm screw, the instantaneous moment values in the time of therefore can accurately measuring valve working, measurement range is wide, highly sensitive, reliable operation.When valve working moment surpassed setting value, control system made the actuator cease operation, and valve and actuator are protected, and can avoid the mistake moment of valve and actuator to damage effectively.In addition, the utility model physical construction is simple, is easy to process and assemble, low cost of manufacture.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is a structural principle synoptic diagram of the present utility model;
Fig. 2 is a metering circuit schematic diagram of the present utility model;
Fig. 3 is valve position of the present utility model and torgue measurement-control principle figure.
1. body, 2. bearing, 3. worm screw, 4. inductive coil, 5. iron core, 6. shaft coupling, 7. motor, 8. worm gear.
Embodiment
As shown in Figure 1, torque measuring device described in the utility model mainly is made up of body 1, bearing 2, worm screw 3, inductive coil 4, iron core 5, motor 7, shaft coupling 6, worm gear 8 and metering circuit (as shown in Figure 2).Illustrating all parts all is assemblied in the body 1, wherein: worm screw 3 adopts the two end supports mode to be installed in the body 1; Drive motor 7 is connected with worm screw 3 by shaft coupling 6, and shaft coupling 6 can adopt flexible clutch, to reduce the right alignment requirement when assembling of motor shaft and worm shaft; Iron core 5 is assemblied on the motor link of worm shaft and places in the inductive coil 4.
As shown in Figure 2, the inductive coil 4 in the metering circuit described in the utility model constitutes by induction winding L 1 with as 2 two windings of winding L that benchmark is used.Induction winding L 1 links to each other with metering circuit, produces signal voltage.The various parameters of benchmark winding L 2 such as physical dimension, material, line footpath, the number of turn etc. are equal to induction winding L 1.Induction winding L 1, benchmark winding L 2 and resistance R 1 and resistance R 2 are formed alternating current bridge, and the bridge rectifier circuit of forming by diode V1, diode V2, diode V3, diode V4 and diode V5, diode V6, diode V7, diode V8, make electric bridge output terminals A, 2 position direct currents of B, and the LC wave filter elimination higher hamonic wave of forming through inductance L 3, capacitor C 3, inductance L 4, capacitor C 4.Output has reflected inductance value poor of 2 liang of telefaults of induction winding L 1 and induction winding L, that is has reflected tested moment values.
In actual use; for actuator in the course of work and valve are carried out overload protection; promptly when the work moment of actuator surpasses initial set value Ni or rated moment; actuator is quit work, and the operator can set by the remote computer on on-the-spot input equipment (as on-site computer or hand-held infrared input device) or the Control Network and limit moment Ti.When the opening and closing valve, motor 7 (manually time adopt handwheel) drives worm screw 3, worm gear 8 rotates, and drives the valve that links with it by worm-wheel shaft.During valve actuator work; the real-time torque signals that torque measuring device described in the utility model will record by metering circuit detection, shaping and amplification after; output signal T as the moment sensing device is sent to corresponding valve control system; the feedback signal T of qualification torque signals Ti that valve control system will be imported in advance and the output of moment sensing device compares; if T 〉=Ti; then valve control system sends instruction; valve actuator quits work, thereby valve actuator and valve are protected.Meanwhile, but information such as the storer real time record valve operation time in the valve control system, moment values, so that the timely analyzing and processing problem of engineering technical personnel.
Claims (1)
1. a torque measuring device that is used for electric valve actuator comprises worm gear, worm screw, moment sensor; It is characterized in that: described moment sensing device is made up of inductive iron core, inductive coil and measurement of inductance circuit; Inductive iron core places in the inductive coil, and is fixedly connected with worm screw; Inductive coil is made of two windings, and one of them is the benchmark winding, produces alternating voltage, produces magnetic field around coil; Another produces signal voltage for the induction winding; Two windings of inductive coil are connected with the measurement of inductance circuit respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201250306U CN201021907Y (en) | 2006-11-10 | 2006-11-10 | Torque measurement device for valve executor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201250306U CN201021907Y (en) | 2006-11-10 | 2006-11-10 | Torque measurement device for valve executor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201021907Y true CN201021907Y (en) | 2008-02-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006201250306U Expired - Fee Related CN201021907Y (en) | 2006-11-10 | 2006-11-10 | Torque measurement device for valve executor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201021907Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102012291A (en) * | 2010-12-15 | 2011-04-13 | 天津埃柯特阀门控制设备有限公司 | High-torque valve torque monitoring system |
| CN102109397A (en) * | 2010-12-15 | 2011-06-29 | 天津埃柯特阀门控制设备有限公司 | Dynamic detecting device of torque of electric actuating mechanism |
| CN103471749A (en) * | 2013-08-29 | 2013-12-25 | 北京宇航系统工程研究所 | Method for measuring looseness of valve assembling moment |
| CN104156031A (en) * | 2014-07-07 | 2014-11-19 | 中原工学院 | Handwheel mechanism for valve actuator |
| CN104316240A (en) * | 2014-11-18 | 2015-01-28 | 天津市津达执行器有限公司 | Method for acquiring moment of electric actuator |
| CN115979488A (en) * | 2023-03-21 | 2023-04-18 | 苏州成科自控设备有限公司 | Detection device, system and method for output torque of actuator |
-
2006
- 2006-11-10 CN CNU2006201250306U patent/CN201021907Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102012291A (en) * | 2010-12-15 | 2011-04-13 | 天津埃柯特阀门控制设备有限公司 | High-torque valve torque monitoring system |
| CN102109397A (en) * | 2010-12-15 | 2011-06-29 | 天津埃柯特阀门控制设备有限公司 | Dynamic detecting device of torque of electric actuating mechanism |
| CN103471749A (en) * | 2013-08-29 | 2013-12-25 | 北京宇航系统工程研究所 | Method for measuring looseness of valve assembling moment |
| CN103471749B (en) * | 2013-08-29 | 2015-08-19 | 北京宇航系统工程研究所 | A kind of method measured valve assembling moment and relax |
| CN104156031A (en) * | 2014-07-07 | 2014-11-19 | 中原工学院 | Handwheel mechanism for valve actuator |
| CN104156031B (en) * | 2014-07-07 | 2016-07-27 | 中原工学院 | Valve actuator handwheel |
| CN104316240A (en) * | 2014-11-18 | 2015-01-28 | 天津市津达执行器有限公司 | Method for acquiring moment of electric actuator |
| CN115979488A (en) * | 2023-03-21 | 2023-04-18 | 苏州成科自控设备有限公司 | Detection device, system and method for output torque of actuator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |