CN103133759A - 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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- CN103133759A CN103133759A CN2013100892786A CN201310089278A CN103133759A CN 103133759 A CN103133759 A CN 103133759A CN 2013100892786 A CN2013100892786 A CN 2013100892786A CN 201310089278 A CN201310089278 A CN 201310089278A CN 103133759 A CN103133759 A CN 103133759A
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- equalizer bar
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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.
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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, after the modulating valve action, the displacement of valve feeds back to valve positioner by mechanical device again, and the valve position situation is passed to Upper system by electrical signal, by repeatedly feeding back and make valve position reach specified position.But the position of existing electropneumatic valve positioner valve position can't reflect intuitively on electropneumatic valve positioner, the operator also can't learn that whether valve is opened fully or close fully, has brought certain inconvenience to production operation.
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Summary of the invention
the purpose 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, its valve generation displacement for converting electrical signals to aerodynamic force and passing through the air cylinder driven modulating valve, it comprises casing, be arranged in described casing and for accepting to process and the circuit board of output displacement signal, the displacement acceptance division be electrically connected with described circuit board, the displacement carry-out part be in transmission connection mutually with described displacement acceptance division and the feedback section be in transmission connection mutually with described displacement acceptance division, described feedback section comprises the external feedback spring that an 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 offseted with the other end of described reaction lever, be connected and be parallel to the resetting shaft of described the first cam face and the cylinder be in transmission connection mutually with described resetting shaft with described the first cam coaxial, described feedback section also comprises with described the first 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 be electrically connected with described the second trigger switch and the 3rd tutorial light be electrically connected with described the 3rd trigger switch, when modulating valve is opened fully, the 3rd cam and the 3rd trigger switch offset, described the 3rd trigger switch is connected, described the 3rd tutorial light lights, when modulating valve cuts out fully, the second cam and the second trigger switch offset, described the second trigger switch is connected, described the second tutorial light lights.
optimize, described displacement acceptance division comprises equalizer bar, the torquer coil that is fixed in the described equalizer bar the other end that an end is connected with described external feedback spring, be arranged in magnet steel in described torquer coil, be fixed in the support in described casing, described balancing pole 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 an end hinge in described casing, one end is connected the internal feedback spring that the other end is connected with described equalizer bar with the middle part of girder, be fixed on the diaphragm cylinder that casing is interior and 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 the same 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, on described equalizer bar, offer a plurality ofly for regulating the attachment hole of inside and outside feedback spring and its link position, 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 nozzle of balance whether 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 the Electric signal processing module, and described signal processing module output terminal 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 also is 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 with the position of valve to reflect intuitively in real time the state of valve switch respectively.
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The accompanying drawing explanation
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;
the linkage structure schematic diagram that accompanying drawing 3 is 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.
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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 valve by air cylinder driven modulating valve 21 11 produces displacements, and it comprises casing 22, be arranged in casing 22 and for accepting to process and the circuit board 16 of output displacement signal, the displacement acceptance division 23 be electrically connected 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 be in transmission connection mutually with displacement acceptance division 23.
as shown in Figure 2, feedback section 24 comprises the external feedback spring 4 that an end is connected with displacement acceptance division 23, the reaction lever 7 that an end is connected with external feedback spring 4 the other ends, the first cam 6 offseted with the other end of reaction lever 7, the feedback cylinder 12 that coaxially is 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 an end hinge in casing 22, one end is connected with the middle part of girder 10 the internal feedback spring 13 that 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 nozzle 8 of balance whether 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 the same 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 offer five in regulating on equalizer bar 3, 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, by displacement carry-out part 25, is sent on valve 11, makes valve open to desired location.
because the position of the electropneumatic valve positioner valve position of said structure can't reflect intuitively on electropneumatic valve positioner, the operator also can't learn whether valve is opened fully or closed fully 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 be electrically connected with the second trigger switch 63 and the 3rd tutorial light 66 be electrically connected with the 3rd trigger switch 64.Due to the second tutorial light 65 and the 3rd tutorial light 66 when modulating valve 21 is opened fully, the 3rd cam 62 and the 3rd trigger switch 64 offset, the 3rd trigger switch 64 is connected, the 3rd tutorial light 66 lights, when modulating valve cuts out fully, 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 that produce on 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 characteristics, and its purpose is to allow the 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 (7)
1. the electropneumatic valve positioner based on two formula limit switches, its valve (11) generation displacement for converting electrical signals to aerodynamic force and passing through air cylinder driven modulating valve (21), it comprises casing (22), be arranged in described casing (22) and for accepting to process and the circuit board (16) of output displacement signal, the displacement acceptance division (23) be electrically connected with described circuit board (16), the displacement carry-out part (25) be in transmission connection mutually with described displacement acceptance division (23) and the feedback section (24) be in transmission connection mutually with described displacement acceptance division (23), described feedback section (24) comprises the feedback cylinder (12) be 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) offseted 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) be electrically connected with described the second trigger switch (63) and the 3rd tutorial light (66) be electrically connected with described the 3rd trigger switch (64), when modulating valve (21) while opening fully, described the 3rd cam (62) offsets with described the 3rd trigger switch (64), described the 3rd trigger switch (64) is connected, described the 3rd tutorial light (66) lights, when modulating valve cuts out fully, 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.
2. the electropneumatic valve positioner based on two formula limit switches according to claim 1, it is characterized in that: described displacement acceptance division (23) comprises the equalizer bar (3) that an end is connected with described external feedback spring (4), be fixed in 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 in the support (17) in described casing (22), described balancing pole (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).
3. the electropneumatic valve positioner based on two formula limit switches according to claim 2, it is characterized in that: described displacement carry-out part (25) comprises the girder (10) of an end hinge in described casing (22), one end is connected with the middle part of girder (10) the internal feedback spring (13) that the other end is connected with described 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 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 the same end of described equalizer bar (3) with described external feedback spring (4) and is positioned at the both sides of described equalizer bar (3), described internal feedback spring (13) and described torquer coil (1) are positioned at the same side of described equalizer bar (3).
4. the electropneumatic valve positioner based on two formula limit switches according to claim 3, it is characterized in that: on described equalizer bar (3), offer a plurality ofly for regulating the attachment hole (31) of inside and outside feedback spring (13,4) and its link position, the equal hasp of connecting end of described inside and outside feedback spring (13,4) and equalizer bar (3) is in described attachment hole (31).
5. the electropneumatic valve positioner based on two formula limit switches according to claim 3, 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 nozzle (8) of balance whether of the moment on equalizer bar (3), the oral area of described nozzle (8) is attached on equalizer bar (3).
6. the electropneumatic valve positioner based on two formula limit switches according to claim 3 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).
7. 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 the circuit signal puocessing module, and described signal processing module output terminal 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 true CN103133759A (en) | 2013-06-05 |
| CN103133759B 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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Cited By (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 |
| CN104613230A (en) * | 2015-02-06 | 2015-05-13 | 常熟市华夏仪表有限公司 | Explosion proof type intelligent electrical 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 |
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| JP2000170953A (en) * | 1998-12-02 | 2000-06-23 | Kubota Corp | Opening display device of valve |
| 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 |
| CN203202388U (en) * | 2013-03-20 | 2013-09-18 | 常熟市华夏仪表有限公司 | Electro-pneumatic valve positioner based on two-position type limit switch |
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2013
- 2013-03-20 CN CN201310089278.6A patent/CN103133759B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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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| CN1791735A (en) * | 2003-03-18 | 2006-06-21 | 通用汽车公司 | Engine valve actuator assembly |
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Cited By (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 |
| CN104613230A (en) * | 2015-02-06 | 2015-05-13 | 常熟市华夏仪表有限公司 | Explosion proof type intelligent electrical 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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| Publication number | Publication date |
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| CN103133759B (en) | 2014-07-09 |
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