CN2726193Y - Valve torque limiting electric apparatus - Google Patents
Valve torque limiting electric apparatus Download PDFInfo
- Publication number
- CN2726193Y CN2726193Y CN 200420079757 CN200420079757U CN2726193Y CN 2726193 Y CN2726193 Y CN 2726193Y CN 200420079757 CN200420079757 CN 200420079757 CN 200420079757 U CN200420079757 U CN 200420079757U CN 2726193 Y CN2726193 Y CN 2726193Y
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- CN
- China
- Prior art keywords
- torque limit
- electric device
- controlled motion
- establish
- cam
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- Expired - Fee Related
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- Electrically Driven Valve-Operating Means (AREA)
Abstract
The utility model discloses an electric valve apparatus comprising an electric control mechanism (1), a finger control mechanism (2), a switching mechanism of manual electric control (3) and an output mechanism of controlled motion (4). A torque limiting mechanism (13) is arranged in the output mechanism of controlled motion (4). By adopting this method, the loading of the motor and the abrasion of the machine member are decreased when overloading to improve the safety of the electric system. The overload protection of the electric valve apparatus can be reliably realized, and the electric valve apparatus is easy to return to normal to use.
Description
Technical field
The utility model relates to a kind of valve torque limit electric device, specifically, relates to its controlled motion output mechanism.
Background technology
Electric device for valve is to utilize the manual or electronic how rotating mode of operation of carrying out, and drives the opening and closing of valve.Operating personnel promptly may carry out centralized control to valve at a distance, also need to carry out at the scene manual operation.But, in the process of the opening and closing of valve, cause and block spool,, particularly carry out electronic control operation if at this moment electric device carries out control operation by force owing to some are unexpected, very likely cause the damage of valve or electric device, even have an accident.At present; generally all be that overload protecting mechanism is set in electric device for valve; its specific practice is; the one, the mode that adopts electrical overloads to protect; promptly when overload appearred in electric operating control, the output shaft of electric device for valve blocked and does not change, and current of electric rises; cut off motor circuit by electric control system, make the motor stall.Its shortcoming is the damage that the electric current rising might cause electric wiring, brings difficulty for inspection and reparation.The 2nd, the mode of employing machine overload protection promptly is provided with friction clutch on the output shaft of electric device for valve, and friction clutch skids when overload appears in electric operating control, and drive path interrupts, the realization overload protection.Its shortcoming is in the process of overload protection, and the friction plate wearing and tearing of skidding can cause clutch to lose efficacy, and in the process of skidding, motor moves under big load condition all the time, causes damage to motor, and the operation of motor brings difficulty to failure judgment.Also having a kind of method is shear pin cut-out carrying out overload protection, then repairs more trouble.
Require in the higher occasion of control precision in industrial departments such as present petrochemical industry, water power, metallurgy, nuclear energy, the overload protection mode of above-described electric device for valve obviously can not meet the demands.
The utility model content
Problem to be solved in the utility model provides a kind of valve torque limit electric device, its objective is to realize torque limit and overload protection reliably in the valve control procedure.
To achieve these goals, valve torque limit electric device provided by the utility model, comprise electric control mechanism, manual control mechanism, manual and electric control switching mechanism and controlled motion output mechanism, in the described controlled motion output mechanism, torque limit mechanism is set.
The technical scheme of torque limit mechanism is the end of the worm shaft of controlled motion output mechanism, the dish-shaped reed that suit one is formed configuration, and the one end contacts with the shoulder of worm shaft, and the other end contacts with casing.
Establish annular rack on the worm shaft of described controlled motion output mechanism, establish a gear that is meshed with it and be bearing on the casing.
It is fastening with axle to establish a cam on the above-mentioned gear shaft, and the contact of the micro limit switch in cam outline and the electrical control gear is connected.
The technical scheme of torque limit mechanism can also be for establishing a cannelure on the worm shaft of described controlled motion output mechanism, on casing, establish a rotating shaft, axis is vertical with worm axis, and an axis short pin parallel with shaft axis established in its end, inserts in the cannelure.
The other end of rotating shaft, it is fastening with axle to establish a cam, and the contact of the micro limit switch in cam outline and the electrical control gear is connected.
Adopt said method, motor load and machine members when having reduced overload, the fail safe that has improved electrical system has realized the overload protection of electric device for valve reliably, and is easy to recover normal use.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Fig. 1 is the simplified schematic diagram of the valve torque limit electric device of employing gear type.
Fig. 2 is annular rack and gear structure schematic diagram.
Fig. 3 is gear and cam structure schematic diagram.
Fig. 4 is the schematic diagram of cannelure and short pin formula valve torque limit electric device.
Fig. 5 is cannelure and short latch structure schematic diagram.
Number in the figure is: 1, electric control mechanism, 2, manual control mechanism, 3, manual and electric control switching mechanism, 4, controlled motion output mechanism, 5, worm shaft, 6, dish-shaped reed, 7, casing, 8, annular rack, 9, gear, 10, cam, 11, worm gear, 12, micro limit switch, 13, torque limit mechanism, 14, cannelure, 15, rotating shaft, 16, short pin, 17, cam.
Embodiment
Shown in the gear and cam structure schematic diagram of the annular rack of the schematic diagram of Fig. 1 electric device for valve, Fig. 2 and gear structure schematic diagram and Fig. 3, electric device for valve provided by the utility model comprises electric control mechanism 1, manual control mechanism 2, manual and electric control switching mechanism 3 and controlled motion output mechanism 4.The utility model, the overload protection during at electronic control and designing.The end of the worm shaft 5 of controlled motion output mechanism, the dish-shaped reed 6 that suit one is formed configuration, the one end contacts with the shoulder of worm shaft 5, and the other end contacts with casing 7.The axial of worm shaft 5 is floating support, and when overload occurring, the shoulder of worm shaft 5 is oppressed dish-shaped reed 6, makes it produce compression, and worm shaft 5 generations move axially.Establish annular rack 8 on the worm shaft 5 of controlled motion output mechanism 4, establish a gear that is meshed with it 9 and be bearing on the casing 7.On the axle other end of above-mentioned gear 9, establish cam 10, the contact of the sensitive switch 12 in the outline of cam 10 and the electrical control gear contacts.Because the minute movement that produces during worm shaft 5 overloads; make annular rack 8 driven gears 9 rotate; cam 10 on 9 of the gears rotates micro limit switch 12 actions that make in the electrical control gear, and the motor stall of electric device for valve has realized the effect of overload protection.
Shown in the cannelure and short latch structure schematic diagram of the schematic diagram of the cannelure of Fig. 4 and short pin formula valve torque limit electric device and Fig. 5, its embodiment is: establish a cannelure 14 on the worm shaft 5 of described controlled motion output mechanism 4, on casing 7, establish a rotating shaft 15, axis and worm shaft 5 axis normal, the short pin 16 that an axis and rotating shaft 15 parallel axes are established in its end inserts in the cannelure 14.The other end of rotating shaft 15, it is fastening with axle to establish a cam 17, and the contact of the micro limit switch 12 in cam 17 outlines and the electrical control gear is connected.When overload occurring, the shoulder of worm shaft 5 is oppressed dish-shaped reed 6, makes it produce compression, and worm shaft 5 produces and moves axially.Establish cannelure 16 on the worm shaft 5 of controlled motion output mechanism 4; drive short pin 16 and rotate, drive cam 17 by rotating shaft 15 and rotate, cam 17 rotates micro limit switch 12 actions that make in the electrical control gear; the motor stall of electric device for valve has realized the effect of overload protection.
Claims (6)
1, a kind of valve torque limit electric device, comprise electric control mechanism (1), manual control mechanism (2), manual and electric control switching mechanism (3) and controlled motion output mechanism (4), it is characterized in that: in the described controlled motion output mechanism (4), torque limit mechanism (13) is set.
2, according to the described valve torque limit of claim 1 electric device, it is characterized in that: described torque limit mechanism (13) is the end at the worm shaft (5) of controlled motion output mechanism (4), the dish-shaped reed (6) that suit one is formed configuration, the one end contacts with the shoulder of worm shaft (5), and the other end contacts with casing (7).
3, according to the described valve torque limit of claim 2 electric device, it is characterized in that: establish annular rack (8) on the worm shaft (5) of described controlled motion output mechanism (4), establish a gear that is meshed with it (9) and be bearing on the casing (7).
4, according to the described valve torque limit of claim 3 electric device, it is characterized in that: it is fastening with axle to establish a cam (10) on the axle of described gear (9), and the contact of the micro limit switch (12) in cam (10) outline and the electrical control gear is connected.
5, according to the described valve torque limit of claim 2 electric device, it is characterized in that: described torque limit mechanism (13) establishes a cannelure (14) on the worm shaft (5) of controlled motion output mechanism (4), on casing (7), establish a rotating shaft (15), axis and worm shaft (5) axis normal, an axis and rotating shaft (15) parallel axes and eccentric short pin (16) are established in its end, insert in the cannelure (14).
6, according to the described valve torque limit of claim 5 electric device, it is characterized in that: the other end of rotating shaft (15), it is fastening with axle to establish a cam (17), and the contact of the micro limit switch (12) in cam (17) outline and the electrical control gear is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420079757 CN2726193Y (en) | 2004-09-20 | 2004-09-20 | Valve torque limiting electric apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420079757 CN2726193Y (en) | 2004-09-20 | 2004-09-20 | Valve torque limiting electric apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2726193Y true CN2726193Y (en) | 2005-09-14 |
Family
ID=35040897
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420079757 Expired - Fee Related CN2726193Y (en) | 2004-09-20 | 2004-09-20 | Valve torque limiting electric apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2726193Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101776169A (en) * | 2010-03-22 | 2010-07-14 | 特福隆集团有限公司 | Nuclear grade valve electric device |
| CN101553679B (en) * | 2006-05-04 | 2011-04-13 | 芙罗服务管理公司 | Handwheel torque limitor |
| CN106764032A (en) * | 2017-01-12 | 2017-05-31 | 温州力米托克智能科技有限公司 | A kind of electric device for valve with moment of torsion inductor |
-
2004
- 2004-09-20 CN CN 200420079757 patent/CN2726193Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101553679B (en) * | 2006-05-04 | 2011-04-13 | 芙罗服务管理公司 | Handwheel torque limitor |
| CN101776169A (en) * | 2010-03-22 | 2010-07-14 | 特福隆集团有限公司 | Nuclear grade valve electric device |
| CN101776169B (en) * | 2010-03-22 | 2014-11-05 | 特福隆集团有限公司 | Nuclear grade valve electric device |
| CN106764032A (en) * | 2017-01-12 | 2017-05-31 | 温州力米托克智能科技有限公司 | A kind of electric device for valve with moment of torsion inductor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050914 Termination date: 20091020 |