CN201281161Y

CN201281161Y - Electric actuating unit for rotary motion valve

Info

Publication number: CN201281161Y
Application number: CNU2008200422874U
Authority: CN
Inventors: 徐洁; 葛润平; 张毅
Original assignee: POWER STATION AUXILIARY MACHINERY GENERAL PLANT CO Ltd CHANGZHOU
Current assignee: POWER STATION AUXILIARY MACHINERY GENERAL PLANT CO Ltd CHANGZHOU
Priority date: 2008-08-04
Filing date: 2008-08-04
Publication date: 2009-07-29
Anticipated expiration: 2018-08-04

Abstract

The utility model relates to an electric execution device of an angle stroke valve, which comprises a motor, a speed reducing mechanism and an output main shaft. The output main shaft is connected with the angle stroke valve, a center groove is arranged at the upper end of the output main shaft, a planet speed reducer is arranged in the center groove, and a plurality of planet wheels of the planet speed reducer are meshed with internal teeth at the inner wall of the center groove; a long shaft which is connected with the output main shaft is linked with a stroke controller by a planet input gear, the stroke controller comprises an opening-direction stroke cam and a closing-direction stroke cam which are arranged at the upper end of a short shaft, and an opening-direction micro switch and a closing-direction micro switch are correspondingly matched with the two stroke cams; and the short shaft is meshed and linked with the stroke input gear of the long shaft by the stroke output gear at the lower end of the short shaft. The electric execution device can reliably control the opening of angle strokes such as valves, air doors and the like in an exact manner; and the electric execution device has the characteristics of light weight, small volume, high controlling precision, easy debugging and long service life.

Description

The angular travel valve electric performance device

Technical field

The utility model relates to a kind of angular travel valve electric performance device that drives angular travel valve.

Background technique

For the power station desulphurization system; sewage treatment; fields such as pipe ventilated; often use butterfly valve; ball valve; 90 ° of angular travel valves such as air door; and part-turn electric actuator is as a kind of control and driving mechanism of valve; requirement can be accurate; these valves of opening and closing reliably; has valve angle stroke limit; protective function; the function of the manual operated valve of energy during power down mode; and existing part-turn electric actuator; not only volume is bigger; and function is comprehensive inadequately; be unfavorable for protection, be unfavorable for on-the-spot installation simultaneously the user to valve; debugging and maintenance.

Summary of the invention

The purpose of this utility model provides a kind of angular travel valve electric performance device, and it had force moment protection, the Stroke Control protective function, can be accurately, reliably, opening and closing angular travel valve easily.

Angle of the present utility model stroke electric performance device contains angle stroke electric performance device, the output line shaft that contains motor, reducing gear and angle of attachment motion valve, said reducing gear comprises reduction gear and planetary reducer, said output line shaft upper end is provided with central channel, planetary reducer is positioned at this central channel, the central gear of planetary reducer is connected with screw with reduction gear, and a plurality of planet wheels of planetary reducer are with being meshed with the internal tooth of this central channel inwall; The major axis that has a lower end to be connected with the output line shaft, this major axis upper end is by a stroke input gear and journey controller interlock, said journey controller contains and is installed in opening to the stroke cam and closing to the stroke cam of minor axis upper end, and two stroke cams are furnished with and corresponding open to sensitive switch and close to sensitive switch; Said minor axis is by the stroke input gear engagement interlock of the stroke output gear and the major axis of its lower end.

Further improvement of the utility model is:

Output line shaft lower end is provided with central channel, is connected with the valve rod of angular travel valve by the spline housing in this lower end central channel.

Said journey controller is provided with electrical control module, potentiometer, and the input end of potentiometer is connected by connecting plate with minor axis, and the signal output part of potentiometer is connected with the control signal input end of electrical control module.

Also be provided with torque controller, comprise torque-rod, worm gear, worm screw, tooth axle, moment sensitive switch.The inner of torque-rod links to each other with worm screw is coaxial, and torque-rod is by tooth bar and the engagement of tooth axle, and the tooth axle is provided with the movement arm that cooperates with the moment sensitive switch; Worm gear has inside and outside tooth, external tooth and worm meshing, the first half engagement of internal tooth and planet wheel.

Handwheel is equipped with in said torque-rod outer end, can carry out manually-operable during power failure.

Major axis is equipped with the aperture indicator panel, is used to indicate the aperture of the angular travel valve that is performed.

The side of output shaft is provided with striker, and it forms position-limit mechanism with two planes on the output shaft.

Motor adopts three-phase 220V or 380V brake motor, can accurately brake immediately when dead electricity, and is safe and reliable.

The utility model device is converted into the unlatching and closure that electrical signal is controlled motor by the angle journey controller with valve angle stroke, realizes the stroke limit protection of valve angle; Torque Control mechanism has crosses the moment protective function when electronic, and utilizes unlatching that switching value controls motor with closed, adopt simultaneously above-mentioned two mechanisms to motoring condition down the valve of work realized two-way safeguarding function.Directly rotate handwheel when needs are manual, can drive the output shaft rotation; When being in motoring condition, also be unlikely generation handwheel hitter phenomenon even rotate handwheel.

And the utility model has adopted planetary gear speed-reduction, compact structure, and volume is little, and is in light weight; The output line shaft adopts spline housing to match with valve, spline housing can take out and turn over a minute angle to adjust valve complete shut-down position, can use the shaft shoulder on Cock screw or the valve to locate, and is easy for installation, be convenient to install, debug and the maintenance valve, simple, convenient, reliable.

Description of drawings

Fig. 1 is this angle stroke electric performance device structural representation;

Fig. 2 is the plan structure schematic representation of electric performance device.

In the accompanying drawing: 1, motor; 2, casing; 3, case lid; 4, gear; The planet wheel of the central gear of 5-1, planetary gear speed reducing mechanism, 5-2, planetary gear speed reducing mechanism; 6, worm gear; 7, output line shaft; 8, major axis; 9, indicator panel; 10, stroke input gear; 11, stroke output gear; 12, minor axis; 13, open to the stroke cam; 14, close to the stroke cam; 15, open to sensitive switch; 16, close to sensitive switch; 17, potentiometer; 18, spline housing; 19, torque-rod; 20, worm screw; 21, tooth axle; 22, moment sensitive switch; 23, handwheel; 24, striker; 25, electric box parts; 26, button; 27, tutorial light; 28, journey controller; 29, torque controller.

Embodiment

Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.

As Fig. 1 and Fig. 2, the utility model angle stroke electric performance device contains motor 1, casing 2, case lid 3, reducing gear, output line shaft 7, journey controller 28, torque controller 29, aperture indicator panel 9, mechanical stop limiter, electric box parts 25.In the casing side electric box parts are installed, in electrical control module is housed, and can have functions such as phase sequence discriminating, aperture LED indication, and the case lid of electrical control module is provided with " scene ", " opening ", " pass " three buttons and Huang, red, green three tutorial light, be convenient to on-the-spot direct control valve, described casing and case lid adopt the lighter pack alloy of weight, and it has corrosion resistance preferably, motor 1 employing three-phase 220V or 380V brake motor.

Reducing gear is made up of gear 4 and NGWN type planetary reducer, and planetary reducer comprises central gear 5-1 and a plurality of planet wheel 5-2 that is engaged with, and central gear 5-1 and reduction gear 4 are connected with screw.Planetary reducer is positioned at the central channel of output line shaft 7 upper ends, and a plurality of planet wheel 5-2 are with being meshed with the internal tooth of this central channel inwall.Major axis 8 lower ends are connected with output line shaft 7, the central shaft hole of central gear 5-1 is passed in the upper end, by a stroke input gear 10 and journey controller 28 interlocks, journey controller contains and is installed in opening to stroke cam 13 and closing to stroke cam 4, two stroke cams and be furnished with and corresponding open to sensitive switch 15 and close to sensitive switch 16 of minor axis 12 upper ends; Minor axis 12 is by the stroke input gear 10 engagement interlocks of stroke output gear 11 with the major axis 8 of its lower end.The upper end of major axis 8 is connected with aperture indicator panel 9.

Angular travel valve is to be connected with output line shaft 7 by the spline housing 18 in the central channel of output line shaft 7 lower ends.The external tooth of spline housing 18 is provided with electrical control module, potentiometer 17 with the journey controller 28 that is meshed, and the input end of potentiometer 17 links to each other with the internal tooth engagement of line shaft 7 central channels.Spline housing 18 delocalization in output shaft 7, the user can use the shaft shoulder on Cock screw or the valve to locate, and spline housing 18 can take out and turn over a minute angle to adjust valve complete shut-down position.

Output line shaft 7 rotates by the reducing gear deceleration under motor 1 driving, drives the valve rod rotation of valve simultaneously by spline housing 18, i.e. the opening and closing valve.The angle of rotating shows by aperture indicator panel 9.

Minor axis 12 connects by connecting plate, and the signal output part of potentiometer 17 is connected with the control signal input end of electrical control module.

Journey controller 28 is installed in the side of output shaft 7, by adjusting cam mechanism, when valve arrives desired location, one of them cam of cam mechanism will accurately touch sensitive switch, sensitive switch becomes normally open from normally off, cut off motor power, potentiometer 17 converts the angular displacement of output shaft 7 to electrical signal and passes to control room aperture table and use.Play the effect of protection motor.

Torque controller 29 comprises torque-rod 19, worm gear 6, worm screw 20, tooth axle 21, moment sensitive switch 22.The inner of torque-

rod

19 and 20 coaxial linking to each other of worm screw, torque-rod 19 is by tooth bar and 21 engagements of tooth axle.Worm gear 6 is by 30 location of the baffle plate on the casing 1; Worm gear 6 has inside and outside tooth, external tooth and worm screw 20 engagements, the first half engagement (see figure 1) of internal tooth and planet wheel 5-2.During the operation of this device; as certain mechanical failure appears; when causing maximum axial moment that output torque can bear greater than worm screw 20; worm screw 20 will produce axial float; tooth bar is subjected to displacement and drives 21 rotations of tooth axle, and the movement arm compressing moment sensitive switch 22 of tooth axle 21 makes moment sensitive switch 22 become normally open from normally off; thereby the cut-out motor power played the moment protective action.

Handwheel 23 is equipped with in the outer end of torque-rod 19, when need are manual, can directly rotate handwheel 23, then drives worm screw 20, worm gear 6, planet wheel 5-2, and output line shaft 7 is rotated.

Mechanical stop limiter comprises two planes on striker 24 and the output shaft 7; striker 24 is fixedly installed on the side of output shaft 7, by adjusting the position of striker 24, when valve forwards the relevant position to; striker 24 promptly bumps against on the one on 7 liang of planes of output shaft, can play protection and accurate positioning action to valve.

Electric box parts 25 are installed in the side of casing 2, in control module is housed, have functions such as phase sequence discriminating, aperture LED indication, and cover at electric control box and to be provided with " scene ", " opening ", " pass " three buttons and Huang, red, green three tutorial light, be convenient to on-the-spot direct control valve.

Claims

1, angular travel valve electric performance device, the output line shaft (7) that contains motor (1), reducing gear and angle of attachment motion valve, it is characterized in that said reducing gear comprises reduction gear (4) and planetary reducer, said output line shaft (7) upper end is provided with central channel, planetary reducer is positioned at this central channel, the central gear of planetary reducer (5-1) is connected with screw with reduction gear (4), and a plurality of planet wheels (5-2) of planetary reducer are with being meshed with the internal tooth of this central channel inwall; The major axis (8) that has a lower end to be connected with the output line shaft, this major axis (8) upper end is by a stroke input gear (10) and journey controller (28) interlock, said journey controller (28) contains and is installed in opening to stroke cam (13) and closing to stroke cam (14) of a minor axis (12) upper end, and two stroke cams are furnished with corresponding opening to sensitive switch (15) and pass to sensitive switch (16); Said minor axis (12) is by stroke input gear (10) the engagement interlock of stroke output gear (11) with the major axis (8) of its lower end.

2. angular travel valve electric performance device according to claim 1 is characterized in that exporting line shaft (7) lower end and is provided with central channel, is connected with the valve rod of angular travel valve by the spline housing (18) in this lower end central channel.

3. angular travel valve electric performance device according to claim 1, it is characterized in that said journey controller (28) is provided with electrical control module, potentiometer (17), the input end of described potentiometer (17) is connected by connecting plate with minor axis (12), and the signal output part of potentiometer (17) is connected with the control signal input end of electrical control module.

4. angular travel valve electric performance device according to claim 1 is characterized in that also being provided with torque controller (29), comprises torque-rod (19), worm gear (6), worm screw (20), tooth axle (21), moment sensitive switch (22); Tooth axle (21) is provided with the movement arm that cooperates with moment sensitive switch (22); The inner of torque-rod (19) and coaxial linking to each other of worm screw (20), torque-rod (19) is by tooth bar and tooth axle (21) engagement, and worm gear (6) has inside and outside tooth, external tooth and worm screw (20) engagement, the first half engagement of internal tooth and planet wheel (5-2).

5. angular travel valve electric performance device according to claim 4 is characterized in that said torque-rod outer end is equipped with handwheel (23).

6. angular travel valve electric performance device according to claim 5 is characterized in that major axis (8) is equipped with aperture indicator panel (9).

7, according to claim 1 or 2 or 3 or 4 or 5 or 6 described angular travel valve electric performance devices, it is characterized in that the side of output shaft (7) is provided with striker (24), position-limit mechanism is formed on two planes on it and the output shaft (7).

8, angular travel valve electric performance device according to claim 7 is characterized in that motor (1) adopts three-phase 220V or 380V brake motor.