CN103133759B - Electropneumatic valve positioner based on two-position-type limit switch - Google Patents
Electropneumatic valve positioner based on two-position-type limit switch Download PDFInfo
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- CN103133759B CN103133759B CN201310089278.6A CN201310089278A CN103133759B CN 103133759 B CN103133759 B CN 103133759B CN 201310089278 A CN201310089278 A CN 201310089278A CN 103133759 B CN103133759 B CN 103133759B
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Abstract
The invention relates to an electropneumatic valve positioner based on a two-position-type limit switch. The electropneumatic valve positioner comprises a machine shell, a displacement receiving part, a displacement output part and a feedback part. The feedback part comprises a first cam, a second cam, a third cam, a second trigger switch, a third trigger switch, a second indicator light and a third indicator light, wherein the second cam and the third cam are coaxial with the first cam and are arranged in parallel, the second trigger switch and the third trigger switch respectively correspond to the second cam and the third cam, the second indicator light is in electric connection with the second trigger switch, and the third indicator light is in electric connection with the third trigger switch. When a regulating valve is opened completely, the third cam is abutted against the third trigger switch, the third trigger switch is switched on, and the third indicator light is glowed; when the regulating valve is closed completely, the second cam is abutted against the second trigger switch, the second trigger switch is switched on, and the second indicator light is glowed. According to the second indicator light and the third indicator light, the states of valve switch can be reported in real time and in direct viewing.
Description
Technical field
the present invention relates to a kind of electropneumatic valve positioner based on two formula limit switches.
Background technique
electropneumatic valve positioner is the main accessories of modulating valve, common and pneumatic control valve supports the use, it accepts the output signal of regulator, then remove to control pneumatic control valve with its output signal, when after modulating valve action, the displacement of valve feeds back to valve positioner by mechanical device again, and valve position situation is passed to Upper system by electrical signal, by repeatedly feeding back and make valve position reach specified position.But existing electropneumatic valve positioner valve bit position cannot reflect intuitively on electropneumatic valve positioner, operator also cannot learn that whether valve is opened completely or close completely, has brought certain inconvenience to production operation.
Summary of the invention
the object of this invention is to provide a kind of electropneumatic valve positioner based on two formula limit switches.
for achieving the above object, the technical solution used in the present invention is: a kind of electropneumatic valve positioner based on two formula limit switches, it is for converting electrical signals to aerodynamic force and producing displacement by the valve of air cylinder driven modulating valve, it comprises casing, be arranged in described casing and for accepting the circuit board of processing and output displacement signal, the displacement acceptance division being electrically connected with described circuit board, the displacement carry-out part being in transmission connection mutually with described displacement acceptance division and the feedback section being in transmission connection mutually with described displacement acceptance division, described feedback section comprises the external feedback spring that one end is connected with described displacement acceptance division, the reaction lever that one end is connected with the described external feedback spring the other end, the first cam offseting with the other end of described reaction lever, be connected and be parallel to the resetting shaft of the first described cam face and the cylinder being in transmission connection mutually with described resetting shaft with the first described cam coaxial, described feedback section also comprises with the first described cam same axis and parallels the second cam and the 3rd cam of setting, second trigger switch and three trigger switch corresponding with described the second cam and described the 3rd cam respectively, the second tutorial light being electrically connected with the second described trigger switch and the 3rd tutorial light being electrically connected with the 3rd described trigger switch, in the time that modulating valve is opened completely, the 3rd cam and the 3rd trigger switch offset, the 3rd described trigger switch is connected, the 3rd described tutorial light lights, in the time that modulating valve cuts out completely, the second cam and the second trigger switch offset, the second described trigger switch is connected, the second described tutorial light lights.
optimize, described displacement acceptance division comprises equalizer bar that one end is connected with described external feedback spring, be fixed on the torquer coil of the described equalizer bar the other end, be arranged in magnet steel in described torquer coil, be fixed on the support in described casing, described equalizer bar is rotationally connected with on described support and its rotating shaft parallels with the rotating shaft of the first cam, and described magnet steel is fixed on described support.
further, described displacement carry-out part comprises the girder of one end hinge in described casing, the internal feedback spring that one end is connected with the middle part of girder and the other end is connected with described equalizer bar, be fixed in casing and diaphragm cylinder that free end is connected with the middle part of described girder, the other end of described girder is connected with the valve of described modulating valve, described internal feedback spring and described external feedback spring are connected to same one end of described equalizer bar and are positioned at the both sides of described equalizer bar, described internal feedback spring and described torquer coil are positioned at the same side of described equalizer bar.
further, offer multiplely for regulating the attachment hole of inside and outside feedback spring and its link position on described equalizer bar, the equal hasp of connecting end of described inside and outside feedback spring and equalizer bar is in described attachment hole.
further, described displacement carry-out part also comprises being connected with described diaphragm cylinder and arranges and for detection of the whether nozzle of balance of the moment on equalizer bar, the oral area of described nozzle is attached on equalizer bar.
further, described displacement carry-out part also comprises the zeroing nut that is arranged on diaphragm cylinder and is positioned at the end that diaphragm cylinder is connected with girder.
optimize, described circuit board is provided with Electric signal processing module, and the output terminal of described circuit signal puocessing module is connected with the input end of described torquer coil.
because technique scheme is used, the present invention compared with prior art has following advantages: the present invention is also provided with second and third cam to control respectively second and third tutorial light below the first cam, and second and third tutorial light is corresponding to reflect intuitively in real time the state of valve switch with the position of valve respectively.
Brief description of the drawings
the internal structure plan view that accompanying drawing 1 is electropneumatic valve positioner of the present invention;
the schematic diagram that accompanying drawing 2 is electropneumatic valve positioner of the present invention;
accompanying drawing 3 is the linkage structure schematic diagram of second and third cam and second and third trigger switch;
in accompanying drawing: 1, torquer coil; 2, magnet steel; 3, equalizer bar; 4, external feedback spring; 5, resetting shaft; 6, the first cam; 7, reaction lever; 8; Nozzle; 9, diaphragm cylinder; 10, girder; 11, valve; 12, feedback cylinder; 13, internal feedback spring; 15, zeroing nut; 16, circuit board; 17, support; 21, modulating valve; 22, casing; 23, displacement acceptance division; 24, feedback section; 25, displacement carry-out part; 31, attachment hole; 61, the second cam; 62, the 3rd cam; 63, the second trigger switch; 64, the 3rd trigger switch; 65, the second tutorial light; 66, the 3rd tutorial light.
Embodiment
below in conjunction with embodiment shown in the drawings, the invention will be further described.
as shown in Figure 1, this electropneumatic valve positioner based on two formula limit switches, it is for converting electrical signals to aerodynamic force and producing displacement by the valve 11 of air cylinder driven modulating valve 21, and it comprises casing 22, be arranged in casing 22 and for accepting to process the displacement acceptance division 23 that is electrically connected with the circuit board 16 of output displacement signal, with circuit board 16, and the displacement carry-out part 25 that is in transmission connection mutually of displacement acceptance division 23 and the feedback section 24 being in transmission connection mutually with displacement acceptance division 23.
as shown in Figure 2, the feedback cylinder 12 that feedback section 24 comprises the external feedback spring 4 that one end is connected with displacement acceptance division 23, the reaction lever 7 that one end is connected with external feedback spring 4 the other ends, the first cam 6 offseting with the other end of reaction lever 7, is coaxially connected and is parallel to the resetting shaft 5 of the first cam 6 end faces, is in transmission connection mutually with resetting shaft 5 with the first cam 6.
displacement carry-out part 25 comprises the girder 10 of one end hinge in casing 22, the internal feedback spring 13 that one end is connected with the middle part of girder 10 and the other end is connected with equalizer bar 3, be fixed on the diaphragm cylinder 9 that casing 22 is interior and free end is connected with the middle part of girder 10, be arranged on diaphragm cylinder 9 and be positioned at the zeroing nut 15 of the end that diaphragm cylinder 9 is connected with girder 10, be connected with diaphragm cylinder 9 and arrange and for detection of the whether nozzle 8 of balance of the moment on equalizer bar 3, the oral area of nozzle 8 is attached on equalizer bar 3, the other end of girder 10 is connected with the valve 11 of modulating valve 21, internal feedback spring 13 is connected to same one end of equalizer bar 3 with external feedback spring 4 and is positioned at the both sides of equalizer bar 3, internal feedback spring 13 and torquer coil 1 are positioned at the same side of equalizer bar 3, according to feedback cylinder 12 air chamber volume differences, in, external feedback spring 13, 4 is also different from the link position of equalizer bar 3, therefore on equalizer bar 3, offer five in regulating, external feedback spring 13, 4 with the attachment hole 31 of its link position, in, external feedback spring 13, 4 with the equal hasp of connecting end of equalizer bar 3 in attachment hole 31.
input signal is input on torquer coil 1 after signal processing module, and torquer coil 1 makes magnet steel 2 move the shift value corresponding with input signal, is sent on valve 11 by displacement carry-out part 25, makes valve open to desired location.
because the electropneumatic valve positioner valve bit position of said structure cannot reflect intuitively on electropneumatic valve positioner, operator also cannot learn whether valve is opened completely or closed completely therefore, feedback section 24 also comprise with the first cam 6 same axis and parallel the second cam 61 of setting and the 3rd cam 62, respectively with the second cam 61 and corresponding the second trigger switch 63 of the 3rd cam 62 and the 3rd trigger switch 64, the second tutorial light 65 being electrically connected with the second trigger switch 63 and the 3rd tutorial light 66 being electrically connected with the 3rd trigger switch 64.Because the second tutorial light 65 and the 3rd tutorial light 66 are in the time that modulating valve 21 is opened completely, the 3rd cam 62 and the 3rd trigger switch 64 offset, the 3rd trigger switch 64 is connected, the 3rd tutorial light 66 lights, in the time that modulating valve cuts out completely, the second cam 61 and the second trigger switch 63 offset, the second trigger switch 63 is connected, the second tutorial light 65 lights, and the operator on product line just can judge by the on/off electricity situation of the second tutorial light 65 on electropneumatic valve positioner and the 3rd tutorial light 66 open/closed state of valve.
above-described embodiment is only explanation technical conceive of the present invention and feature, and its object is to allow person skilled in the art can understand content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalences that Spirit Essence is done according to the present invention change or modify, within all should being encompassed in protection scope of the present invention.
Claims (5)
1. the electropneumatic valve positioner based on two formula limit switches, it is for converting electrical signals to aerodynamic force and producing displacement by the valve (11) of air cylinder driven modulating valve (21), it comprises casing (22), be arranged in described casing (22) and for accepting the circuit board (16) of processing and output displacement signal, the displacement acceptance division (23) being electrically connected with described circuit board (16), the displacement carry-out part (25) being in transmission connection mutually with described displacement acceptance division (23) and the feedback section (24) being in transmission connection mutually with described displacement acceptance division (23), described feedback section (24) comprises the feedback cylinder (12) being connected with described modulating valve (21), the external feedback spring (4) that one end is connected with described displacement acceptance division (23), the reaction lever (7) that one end is connected with described external feedback spring (4) the other end, the first cam (6) offseting with the other end of described reaction lever (7), coaxially be connected and be parallel to the resetting shaft (5) of described the first cam (6) end face with described the first cam (6), described feedback cylinder (12) is in transmission connection mutually with described resetting shaft (5), it is characterized in that: described feedback section (24) also comprises with described the first cam (6) same axis and parallels the second cam (61) and the 3rd cam (62) of setting, second trigger switch (63) and three trigger switch (64) corresponding with described the second cam (61) and described the 3rd cam (62) respectively, the second tutorial light (65) being electrically connected with described the second trigger switch (63) and the 3rd tutorial light (66) being electrically connected with the 3rd described trigger switch (64), in the time that modulating valve (21) is opened completely, the 3rd described cam (62) offsets with the 3rd described trigger switch (64), the 3rd described trigger switch (64) is connected, the 3rd described tutorial light (66) lights, in the time that modulating valve cuts out completely, described the second cam (61) offsets with described the second trigger switch (63), described the second trigger switch (63) is connected, described the second tutorial light (65) lights, described displacement acceptance division (23) comprises the equalizer bar (3) that one end is connected with described external feedback spring (4), be fixed on the torquer coil (1) of described equalizer bar (3) the other end, be arranged in the magnet steel (2) in described torquer coil (1), be fixed on the support (17) in described casing (22), described equalizer bar (3) is rotationally connected with described support (17) above and its rotating shaft parallels with the rotating shaft of the first cam (6), described magnet steel (2) is fixed on described support (17), described displacement carry-out part (25) comprises the girder (10) of one end hinge in described casing (22), the internal feedback spring (13) that one end is connected with the middle part of girder (10) and the other end is connected with described equalizer bar (3), be fixed in casing (22) and diaphragm cylinder (9) that free end is connected with the middle part of described girder (10), described diaphragm cylinder (9) drives the valve (11) of modulating valve (21) to produce displacement by girder (10), the other end of described girder (10) is connected with the valve (11) of described modulating valve (21), described internal feedback spring (13) is connected to same one end of described equalizer bar (3) with described external feedback spring (4) and is positioned at the both sides of described equalizer bar (3), the same side of equalizer bar (3) described in described internal feedback spring (13) is positioned at described torquer coil (1).
2. the electropneumatic valve positioner based on two formula limit switches according to claim 1, it is characterized in that: on described equalizer bar (3), offer multiple for regulating the attachment hole (31) of inside and outside feedback spring (13,4) and its link position, described inside and outside feedback spring (13,4) with the equal hasp of connecting end of equalizer bar (3) in described attachment hole (31).
3. the electropneumatic valve positioner based on two formula limit switches according to claim 1, it is characterized in that: described displacement carry-out part (25) also comprises being connected with described diaphragm cylinder (9) and arranges and for detection of the whether nozzle (8) of balance of the moment on equalizer bar (3), the oral area of described nozzle (8) is attached on equalizer bar (3).
4. the electropneumatic valve positioner based on two formula limit switches according to claim 1, is characterized in that: described displacement carry-out part (25) also comprises that to be arranged on diaphragm cylinder (9) upper and be positioned at the zeroing nut (15) of the end that diaphragm cylinder (9) is connected with girder (10).
5. the electropneumatic valve positioner based on two formula limit switches according to claim 1, it is characterized in that: described circuit board (16) is provided with circuit signal puocessing module, the output terminal of described circuit signal puocessing module is connected with the input end of described torquer coil (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310089278.6A CN103133759B (en) | 2013-03-20 | 2013-03-20 | Electropneumatic valve positioner based on two-position-type limit switch |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310089278.6A CN103133759B (en) | 2013-03-20 | 2013-03-20 | Electropneumatic valve positioner based on two-position-type limit switch |
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| Publication Number | Publication Date |
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| CN103133759A CN103133759A (en) | 2013-06-05 |
| CN103133759B true CN103133759B (en) | 2014-07-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310089278.6A Active CN103133759B (en) | 2013-03-20 | 2013-03-20 | Electropneumatic valve positioner based on two-position-type limit switch |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103363183A (en) * | 2013-07-26 | 2013-10-23 | 常熟市华夏仪表有限公司 | Feedback device of valve positioner |
| CN104613230B (en) * | 2015-02-06 | 2017-07-18 | 常熟市华夏仪表有限公司 | A kind of explosion-proof type intelligent electric valve positioner |
| CN106090386A (en) * | 2016-06-27 | 2016-11-09 | 常熟市维特隆自动化仪表厂 | Electropneumatic valve positioner |
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| US4483367A (en) * | 1984-01-20 | 1984-11-20 | Rochester Gauges, Inc. | Stop fill valve |
| CN2101151U (en) * | 1991-07-24 | 1992-04-08 | 瑞安市化工机械制造厂 | Pnematic valve positioning deivce |
| CN2279499Y (en) * | 1996-08-22 | 1998-04-22 | 黄正方 | Electric vavle locator, electric converter explosion isolating structure |
| CN2527512Y (en) * | 2001-09-13 | 2002-12-25 | 张家口市联通烟机技术服务有限公司 | New type cigarette packaging machine fixed point reject device |
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|---|---|---|---|---|
| JPH11311356A (en) * | 1998-04-24 | 1999-11-09 | Asahi Organic Chem Ind Co Ltd | Plastic made electric valve |
| JP2000170953A (en) * | 1998-12-02 | 2000-06-23 | Kubota Corp | Opening display device of valve |
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|---|---|---|---|---|
| US4483367A (en) * | 1984-01-20 | 1984-11-20 | Rochester Gauges, Inc. | Stop fill valve |
| CN2101151U (en) * | 1991-07-24 | 1992-04-08 | 瑞安市化工机械制造厂 | Pnematic valve positioning deivce |
| CN2279499Y (en) * | 1996-08-22 | 1998-04-22 | 黄正方 | Electric vavle locator, electric converter explosion isolating structure |
| CN2527512Y (en) * | 2001-09-13 | 2002-12-25 | 张家口市联通烟机技术服务有限公司 | New type cigarette packaging machine fixed point reject device |
| CN1791735A (en) * | 2003-03-18 | 2006-06-21 | 通用汽车公司 | Engine valve actuator assembly |
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| JP特开平11-311356A 1999.11.09 |
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