CN104156031B - Valve actuator handwheel - Google Patents
Valve actuator handwheel Download PDFInfo
- Publication number
- CN104156031B CN104156031B CN201410317551.0A CN201410317551A CN104156031B CN 104156031 B CN104156031 B CN 104156031B CN 201410317551 A CN201410317551 A CN 201410317551A CN 104156031 B CN104156031 B CN 104156031B
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- worm shaft
- axial force
- ring
- mounting seat
- force transducer
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Abstract
The invention discloses a kind of valve actuator handwheel, including hand wheel shaft assembly and the dynamometry assembly that is connected with hand wheel shaft assembly, described dynamometry assembly includes the worm shaft mounting seat (18) being arranged on main casing (17), in worm shaft mounting seat (18), it is provided with worm shaft (15), between worm shaft (15) and worm shaft mounting seat (18), is provided with measurement sensing mechanism and snail lever fixing apparatus.The present invention substitutes original mechanical force measurer by utilizing axial force transducer, it is possible to accurately measuring the size of axial force suffered by worm shaft, certainty of measurement is not influenced by temperature, and realizes the partial installation of handwheel simultaneously, improves efficiency of assembling.
Description
Technical field
The present invention relates to handwheel, especially valve actuator handwheel.
Background technology
Valve actuator field handwheel uses when being typically all manual operation under powering-off state, utilizes worm screw to drive worm gear to rotate, then passes through main shaft and export.When electric motor operation, in order to prevent electromotor overload, it is necessary to the size of axial force suffered by worm screw is judged, if axial force is excessive, then central processing unit will make electric motor circuit breaking, quits work.
At present in valve actuator field, it is generally adopted the method for machinery to judge the size of axial force, it is the size that the deflection after the disc spring being contained on worm shaft by measurement is subject to axial force calculates axial force, the axial force size inaccuracy measured in this way, because when several disc springs are stitched together, their deflection and the size of suffered axial force linearly do not change；Additionally disc spring is installed in main casing, the inside is full of lubricating oil, when executor works, the temperature of lubricating oil is the highest can reach 80 ° of C, and the temperature sometimes started working the northern area of China executor is minimum-30 ° of C, the impact of the coefficient of elasticity of disc spring is very big by temperature, and the axial force that so also can make this measurement device is inaccurate, and this mechanism is more complicated, installing extremely difficult, functional reliability is poor.
Summary of the invention
The technical problem to be solved in the present invention be valve actuator of the prior art adopt be machinery method to judge the size of axial force, and the axial force size inaccuracy that this method is measured, it is easy to temperature influence, and mechanism is complicated, installing extremely difficult, functional reliability is poor.
For solving above-mentioned technical problem, technical scheme provided by the invention is as follows:
Valve actuator handwheel of the present invention, including hand wheel shaft assembly and the dynamometry assembly that is connected with hand wheel shaft assembly, described dynamometry assembly includes the worm shaft mounting seat arranged on a main housing, in worm shaft mounting seat, it is provided with worm screw, between worm screw and worm shaft mounting seat, is provided with measurement sensing mechanism and snail lever fixing apparatus.By arranging measurement sensing mechanism between worm screw and worm shaft mounting seat, when worm screw is subject to axial force, it is possible to induce the size of axial force by measuring sensing mechanism.
As the preferred version of the present invention, measure sensing mechanism and include being positioned at the end sensing device of worm shaft front end and be positioned at the middle part sense measuring device matched with end sensing device in the middle part of worm screw.When worm screw is subject to axial force, it is possible to by being positioned at the end sensing device of worm shaft front end and being positioned at the middle part sense measuring device in the middle part of worm screw and induce the size of axial force.
As the preferred version of the present invention, middle part sense measuring device includes the axial force transducer being nested with in the middle part of worm screw, is respectively arranged with the first detecting means and the second detecting means in the axial force transducer left and right sides.Axial force suffered by worm screw, senses on axial force transducer by the first detecting means or the second detecting means, induces a resistance after axial force transducer stress, and resistance size can be transferred to central processing unit, thus inducing the size of axial force.
Preferred version as the present invention, first detecting means includes the first needle thrust bearing, the first disc spring and the first back-up ring that are nested with on worm screw, first needle thrust bearing is positioned on the left of axial force transducer, and the first back-up ring is pressed on the first needle thrust bearing by the first disc spring from left side.First disc spring is to reduce impact.When worm shaft be subject to axial force to the right time, worm shaft has the trend moved right, worm shaft end back-up ring passes through external splines set, the first disc spring, the first disc spring back-up ring, the first needle thrust bearing axial force transmission to the inner ring of axial force transducer, the outer ring of axial force transducer is fixed by worm shaft mounting seat, the Internal and external cycle making axial force transducer has the trend compressed, thus inducing the size of axial force.
Preferred version as the present invention, second detecting means includes the second needle thrust bearing, the second disc spring and the second back-up ring that are nested with on worm screw, second needle thrust bearing is positioned on the right side of axial force transducer, and the second back-up ring is pressed on the second needle thrust bearing by the second disc spring from right side.Second disc spring is to reduce impact.When worm shaft is subject to axial force to the left, worm shaft has the trend being moved to the left, its shaft shoulder will be pressed onto the second disc spring on worm shaft, second disc spring can give axial force transducer by the second back-up ring, the second needle thrust bearing axial force transmission, the outer ring of axial force transducer is fixed by sensor gland, the Internal and external cycle making axial force transducer has the trend compressed, a resistance is induced after axial force transducer stress, resistance size is judged by central processing unit, thus drawing the size of axial force.
As the preferred version of the present invention, also including sensor gland, sensor gland is arranged on worm shaft mounting seat front end, is fixed in worm shaft mounting seat by axial force transducer from left side.The outer ring of axial force transducer is fixed by sensor gland so that the Internal and external cycle of axial force transducer has the trend compressed, thus inducing the size of axial force.
Preferred version as the present invention, end sensing device includes external splines, the fixing screw of worm shaft end, worm shaft end back-up ring, the first flat key and inner spline housing, first flat key is arranged in the keyway that worm shaft is anterior, external splines is arranged on outside the first flat key, worm shaft end back-up ring is fixed on worm shaft front end through worm shaft by the fixing screw of worm shaft end, and worm shaft end back-up ring is pressed on external splines.When worm shaft is subject to axial force to the right, worm shaft has the trend moved right, worm shaft end back-up ring by external splines pass to the first disc spring finally axial force transmission to axial force transducer.
As the preferred version of the present invention, snail lever fixing apparatus includes the oil sealing, lining and the circlip that are successively set on worm shaft from front to back.Oil sealing is used for sealing the lubricating oil of main casing, in case lubricating oil flows into the cavity equipped with axial force transducer.The periphery of lining and worm shaft mounting seat are interference fits, and inner headed face is matched in clearance with worm shaft, mainly supporting role.The left surface of back-up ring and lining fit, it is prevented that lining slides axially.
Preferred version as the present invention, hand wheel shaft assembly includes handwheel, handwheel end is connected with hand wheel shaft housing, the second lining it is provided with in hand wheel shaft housing, second lining and hand wheel shaft housing are linked together by interference fits, and hand wheel shaft front end is fixedly connected with the hand wheel through the second lining, end is connected with inner spline housing by straight pin.Hand wheel shaft assembly mainly passes to worm shaft the torque suffered by handwheel.People is applied to the torque of handwheel and passes to hand wheel shaft by the second flat key being connected with handwheel, by straight pin, hand wheel shaft says that torque is delivered on inner spline housing, inner spline housing passes to the external splines being meshed with it again, and external splines set is ultimately transferred to worm shaft again through the second flat key being attached thereto.
The installation method of valve actuator handwheel of the present invention is as follows:
A, oil sealing, lining and circlip are sequentially loaded into from front to back worm shaft mounting seat rear portion；
B, worm shaft is penetrated worm shaft mounting seat；
C, the first disc spring, the first back-up ring and the first needle thrust bearing being nested with successively on worm shaft from the inside to the outside, the first needle thrust bearing contacts with on the left of axial force transducer；
D, the second back-up ring, the second disc spring, the second needle thrust bearing and axial force transducer are nested with in the middle part of worm shaft from the inside to the outside successively；
E, covering sensor gland, sensor gland is pushed down axial force transducer and is fixed in worm shaft mounting seat from left side；
F, by first flat key load worm shaft keyway in, outside the first flat key, be nested with installation external splines；
Worm shaft back-up ring is fixed on worm shaft end by the fixing screw of g, worm shaft end；
H, finally worm shaft mounting seat is loaded main casing by bolt, realize the partial installation of described mechanism.
Valve actuator handwheel of the present invention utilizes axial force transducer to substitute original mechanical force measurer, can accurately measure the size of axial force suffered by worm shaft, certainty of measurement is not influenced by temperature, and realizes the partial installation of handwheel simultaneously, improves efficiency of assembling.
Accompanying drawing explanation
Fig. 1 is the sectional view of valve actuator handwheel of the present invention.
Fig. 2 is valve actuator handwheel A portion of the present invention enlarged drawing.
Detailed description of the invention
As shown in Figure 1, 2, valve actuator handwheel of the present invention, including hand wheel shaft assembly and the dynamometry assembly that is connected with hand wheel shaft assembly.
Hand wheel shaft assembly includes hands 3, handwheel 3 end is connected with hand wheel shaft housing 5, is provided with the second lining 4 in hand wheel shaft housing 5, and the second lining 4 is linked together by interference fits with hand wheel shaft housing 5, then block with the second circlip 6, it is prevented that lining 4 moves axially.Hand wheel shaft 7 links together with handwheel 3 through lining 4 by being positioned at the two the second flat keys 25 of hand wheel shaft 7 front portion, and hand wheel shaft 7 top is fixed on handwheel 3 outer end by second fixing 2 handwheel terminal block circles 1 of screw, to prevent handwheel 3 from moving axially.Hand wheel shaft 7 end is fixed together by straight pin 24 and inner spline housing 12, is then connected with external splines 8 again, external splines 8 and can sliding axially both inner spline housing 12.
Dynamometry assembly includes the worm shaft mounting seat 18 being arranged on main casing 17, is provided with worm shaft 15 in worm shaft mounting seat 18, is provided with measurement sensing mechanism and snail lever fixing apparatus between worm shaft 15 and worm shaft mounting seat 18.
Snail lever fixing apparatus includes the oil sealing 13, lining 16 and the circlip 14 that are successively set on worm shaft 15 from front to back.
Measure sensing mechanism include being positioned at the end sensing device of worm shaft 15 front end and be positioned at the middle part sense measuring device matched with end induction device in the middle part of worm shaft 15.
End sensing device includes external splines 8, the fixing screw 9 of worm shaft end, worm shaft end back-up ring the 10, first flat key 11 and inner spline housing 12, first flat key 11 is arranged in the keyway of worm shaft 15 front portion, external splines 8 is nested with outside the first flat key 11, worm shaft end back-up ring 10 is fixed on worm shaft 15 front end by the fixing screw 9 of worm shaft end, and worm shaft end back-up ring 10 is pressed on external splines 8.When worm shaft 15 is subject to axial force to the right, worm shaft 15 has the trend moved right, worm shaft end back-up ring 10 by external splines 8 pass to the first back-up ring 23 finally axial force transmission to axial force transducer 19.
Middle part sense measuring device includes the axial force transducer 19 being nested with in the middle part of worm shaft 15, is respectively arranged with the first detecting means and the second detecting means in axial force transducer 19 left and right sides.
First detecting means includes the first needle thrust bearing the 22, first disc spring 21 and the first back-up ring 23 being nested with on worm shaft 15, first needle thrust bearing 22 is positioned on the left of axial force transducer 19, and the first back-up ring 23 is pressed on the first needle thrust bearing 22 by the first disc spring 21 from left side.First disc spring 21 is to reduce impact.Worm shaft mounting seat 18 front end is provided with sensor gland 20, and axial force transducer 19 is fixed in worm shaft mounting seat 18 by sensor gland 20 from left side.Owing to the outer ring of axial force transducer 19 is fixed by sensor gland 20 so that the Internal and external cycle of axial force transducer 19 has the trend compressed, thus inducing the size of axial force.Second detecting means includes the second needle thrust bearing the 26, second disc spring 28 and the second back-up ring 27 being nested with on worm shaft 15, second needle thrust bearing 26 is positioned on the right side of axial force transducer 19, and the second back-up ring 27 is pressed on the second needle thrust bearing 26 by the second disc spring 28 from right side.Second disc spring 28 is to reduce impact.
The operation principle of valve actuator handwheel of the present invention is:
When worm shaft 15 is subject to axial force to the left, worm shaft 15 has the trend to left movement, its shaft shoulder will be pressed onto the second disc spring 28 on worm shaft 15, second disc spring 28 can by second back-up ring 26 axial force transmission of the 27, second needle thrust bearing to axial force transducer 19 inner ring, the outer ring of axial force transducer 19 is fixed by sensor gland 20, the Internal and external cycle making axial force transducer 19 has the trend compressed, a resistance is induced after axial force transducer 19 stress, resistance size is judged by central processing unit, thus drawing the size of axial force.
When worm shaft 15 be subject to axial force to the right time, worm shaft 15 has the trend moved right, worm shaft end back-up ring 10 passes through external splines the 8, first disc spring the 21, first back-up ring 22 axial force transmission of the 23, first needle thrust bearing to the inner ring of axial force transducer 19, the outer ring of axial force transducer 19 is fixed by worm shaft mounting seat 18, the Internal and external cycle making axial force transducer 19 has the trend compressed, thus inducing the size of axial force.
Hand wheel shaft assembly mainly passes to worm shaft 15 the torque suffered by handwheel 3.People is applied to the torque of handwheel 3 and passes to hand wheel shaft 7 by the second flat key 25 being connected with handwheel 3, hand wheel shaft 7 transmits torque on inner spline housing 12 by straight pin 24, inner spline housing 12 passes to the external splines 8 being meshed with it again, and external splines 8 is ultimately transferred to worm shaft 15 again through the first flat key 11 being attached thereto.
The installation method of valve actuator handwheel of the present invention is as follows:
A, oil sealing 13, lining 16 and circlip 14 are sequentially loaded into worm shaft mounting seat 18 rear portion from front to back；
B, worm shaft 15 is penetrated worm shaft mounting seat 18；
C, by the first disc spring 21, the first back-up ring 23 and the first needle thrust bearing 22 are nested with from the inside to the outside successively on worm shaft 15, and the first needle thrust bearing 22 contacts with on the left of axial force transducer；
D, second back-up ring the 27, second disc spring the 28, second needle thrust bearing 26 and axial force transducer 19 are nested with from the inside to the outside successively in the middle part of worm shaft 15；
E, covering sensor gland 20, sensor gland 20 is pushed down axial force transducer 19 and is fixed in worm shaft mounting seat 18 from left side；
F, the first flat key 11 is loaded in the keyway of worm shaft 15, outside the first flat key, be nested with installation external splines 8；
Worm shaft back-up ring 10 is fixed on worm shaft 15 end by the fixing screw 9 of g, worm shaft end；
H, finally worm shaft mounting seat 18 is loaded main casing 17 by bolt, realize the partial installation of described mechanism.
Above in association with accompanying drawing, the preferred embodiment of the present invention is elaborated, but the present invention is not limited to above-mentioned embodiment, in the ken that skilled artisan possesses, it is also possible to make various change under the premise without departing from present inventive concept.
Claims (5)
1. a valve actuator handwheel, it is characterized in that: include hand wheel shaft assembly and the dynamometry assembly being connected with hand wheel shaft assembly, described dynamometry assembly includes the worm shaft mounting seat (18) being arranged on main casing (17), in worm shaft mounting seat (18), it is provided with worm shaft (15), between worm shaft (15) and worm shaft mounting seat (18), is provided with measurement sensing mechanism and snail lever fixing apparatus；Described measurement sensing mechanism includes the end sensing device being positioned at worm shaft (15) front end and is positioned at the middle part sense measuring device matched with end sensing device in worm shaft (15) middle part；Described middle part sense measuring device includes being nested with the axial force transducer (19) at worm shaft (15) middle part, is respectively arranged with the first detecting means and the second detecting means in axial force transducer (19) left and right sides；Described first detecting means includes the first needle thrust bearing (22), the first back-up ring (23) and the first disc spring (21) that are nested with on worm shaft (15), first needle thrust bearing (22) is positioned at axial force transducer (19) left side, and the first back-up ring (23) is pressed on the first needle thrust bearing (22) by the first disc spring (21) from left side；
Described end sensing device includes inner spline housing (12), the fixing screw (9) of worm shaft end, worm shaft end back-up ring (10), the first flat key (11) and external splines (8), first flat key (11) is arranged in the keyway that worm shaft (15) is anterior, external splines (8) is arranged on outside flat key, worm shaft end is fixed screw (9), through external splines (8), worm shaft end back-up ring (10) is fixed on worm shaft (15) front end, and worm shaft end back-up ring (10) is pressed on external splines (8).
2. valve actuator handwheel according to claim 1, it is characterized in that: described second detecting means includes the second needle thrust bearing (26), the second back-up ring (27) second disc spring (28) that are nested with on worm shaft, second needle thrust bearing (26) is positioned at axial force transducer (19) right side, and the second back-up ring (27) is pressed on the second needle thrust bearing (26) by the second disc spring (28) from right side.
3. valve actuator handwheel according to claim 2, it is characterized in that: also include sensor gland (20), sensor gland (20) is arranged on worm shaft mounting seat (18) front end, is fixed in worm shaft mounting seat (18) by axial force transducer (19) from left side.
4. valve actuator handwheel according to claim 1, it is characterized in that: described snail lever fixing apparatus includes the oil sealing (13), lining (16) and the circlip (14) that are successively set on worm shaft (15) from front to back, circlip (14) outer ring is stuck in worm shaft mounting seat (18), and inner ring is pressed on lining (16).
5. the installation method of valve actuator handwheel according to claim 1, it is characterised in that comprise the steps of
A, oil sealing (13), lining (16) and circlip (14) are sequentially loaded into worm shaft mounting seat (18) rear portion from front to back；
B, worm shaft (15) is penetrated worm shaft mounting seat (18)；
C, being nested with from the inside to the outside successively on worm shaft (15) by the first disc spring (21), the first back-up ring (23) and the first needle thrust bearing (22), the first needle thrust bearing (22) contacts with on the left of axial force transducer；
D, the second back-up ring (27), the second disc spring (28), the second needle thrust bearing (26) and axial force transducer (19) are nested with from the inside to the outside successively worm shaft (15) middle part；
E, covering sensor gland (20), sensor gland (20) is pushed down axial force transducer (19) and is fixed in worm shaft mounting seat (18) from left side；
F, by the first flat key (11) load worm shaft (15) keyway in, be nested with outside the first flat key installation external splines (8)；
G, worm shaft end are fixed screw (9) and worm shaft back-up ring (10) are fixed on worm shaft (15) end；
H, finally worm shaft mounting seat (18) is loaded main casing (17) by bolt, realize the partial installation of described mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410317551.0A CN104156031B (en) | 2014-07-07 | 2014-07-07 | Valve actuator handwheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410317551.0A CN104156031B (en) | 2014-07-07 | 2014-07-07 | Valve actuator handwheel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104156031A CN104156031A (en) | 2014-11-19 |
| CN104156031B true CN104156031B (en) | 2016-07-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410317551.0A Expired - Fee Related CN104156031B (en) | 2014-07-07 | 2014-07-07 | Valve actuator handwheel |
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| Country | Link |
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| CN (1) | CN104156031B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4034624A (en) * | 1975-03-27 | 1977-07-12 | Nuovo Pignone, S.P.A. | Valve actuating device |
| US4111070A (en) * | 1977-04-04 | 1978-09-05 | Dresser Industries, Inc. | Valve actuator and spring biasing cartridge |
| US5503045A (en) * | 1992-11-27 | 1996-04-02 | Werner Riester Gmbh & Co. Kg Armaturen- Und Maschinenantriebe | Drive assembly for controlling a powered device |
| CN201021907Y (en) * | 2006-11-10 | 2008-02-13 | 南京财经大学 | Torque measurement device for valve executor |
| CN201177541Y (en) * | 2008-04-25 | 2009-01-07 | 中国北车集团大同电力机车有限责任公司 | Force-measuring device |
| 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 |
| CN204229283U (en) * | 2014-07-07 | 2015-03-25 | 中原工学院 | Valve actuator handwheel |
-
2014
- 2014-07-07 CN CN201410317551.0A patent/CN104156031B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4034624A (en) * | 1975-03-27 | 1977-07-12 | Nuovo Pignone, S.P.A. | Valve actuating device |
| US4111070A (en) * | 1977-04-04 | 1978-09-05 | Dresser Industries, Inc. | Valve actuator and spring biasing cartridge |
| US5503045A (en) * | 1992-11-27 | 1996-04-02 | Werner Riester Gmbh & Co. Kg Armaturen- Und Maschinenantriebe | Drive assembly for controlling a powered device |
| CN201021907Y (en) * | 2006-11-10 | 2008-02-13 | 南京财经大学 | Torque measurement device for valve executor |
| CN201177541Y (en) * | 2008-04-25 | 2009-01-07 | 中国北车集团大同电力机车有限责任公司 | Force-measuring device |
| 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 |
| CN204229283U (en) * | 2014-07-07 | 2015-03-25 | 中原工学院 | Valve actuator handwheel |
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| CN104156031A (en) | 2014-11-19 |
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