CN103914061A - Automatic detecting and power off device of actuator inner failure - Google Patents
Automatic detecting and power off device of actuator inner failure Download PDFInfo
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- CN103914061A CN103914061A CN201410109540.3A CN201410109540A CN103914061A CN 103914061 A CN103914061 A CN 103914061A CN 201410109540 A CN201410109540 A CN 201410109540A CN 103914061 A CN103914061 A CN 103914061A
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Abstract
The invention relates to the technical field of actuators, in particular to an automatic detecting and power off device of actuator inner failure. The device is composed of a detecting circuit, a logic judging circuit, a power off control circuit and a contact device which are connected to an actuator through a signal line in sequence, the contact device is connected between a manual detecting switch and the actuator, the detecting circuit is composed of a control signal detecting circuit and a position feedback signal detecting circuit, the control signal detecting circuit is composed of a separating device, a sampling resistor, a voltage divider, and a comparator which are connected to the actuator through a control signal line, and the power off control circuit is composed of a switch circuit and a time relay. The automatic detecting and power off device of actuator inner failure has the advantages that an actuator power source can be powered off automatically, so that the failed actuator is separated from production. When the power source is powered off, opening of various valves and dampers arranged on the actuator can be controlled manually. Serious harm to production caused by actuator failure can be avoided.
Description
Technical field
The present invention relates to actuation technologies field, particularly a kind of automatic detection and shearing device of actuator internal fault.
Background technology
Due to actuator internal fault, for example, because actuator internal component quality does not pass a test, program error appears in aging or intelligent actuator in program operation process, there will be the not generation of controlled situation of actuator.
Under this fault, there will be control motor in actuator not to be subject to input signal control, and there is uncontrolled complete shut-down in the situation of rotating to a direction, after short stay, can set back and put again.This,, in some is produced, can make production target fluctuation, has a strong impact on equipment and personal safety, as in power plant produces, can cause air door, the water valve that actuator is controlled to close, and makes the urgent blowing out of boiler.The fluctuation of actuator control motor, can cause the serious accidents such as furnace puff, boiler tube explosion, high temperature furnace fire-fighting go out to hurt sb.'s feelings.
Occur for fear of this class accident, the method that production unit adopts is:
1, actuator is regularly replaced; 2, Purchasing Quality has the large factory product of certain guarantee.But these all can not fundamentally stop the generation of this class accident.
Occur this class actuator because of internal cause cause damage fault after, it is not all right only relying on the actuator more renewing, because, after fault, fault actuator produces very serious destruction sometimes not according to the swing of instruction, the major accident that can cause personal injury or production equipment to damage.
But after present each actuator manufacturer does not damage for this actuator, not according to this special circumstances of instruction action, technology solution is proposed.
Summary of the invention
The object of the invention is to propose a kind of automatic detection and shearing device of actuator internal fault, can detect actuator internal fault and automatically cut off actuator power supply, prevent that perseveration from appearring in fault actuator.
The object of the invention is to be achieved through the following technical solutions:
Automatic detection and the shearing device of actuator internal fault of the present invention, it is characterized in that by the testing circuit being connected with actuator by signal wire, the logic judging circuit that testing circuit is connected therewith, the cutting-off controlling circuit that logic judging circuit is connected therewith and the contactor that cutting-off controlling circuit is connected therewith form, this contactor is connected to manually between detector switch and actuator
Described testing circuit is made up of control signal testing circuit and position feed back signal testing circuit,
Described control signal testing circuit is by the control signal isolator being connected with actuator by control signal wire, the control signal sample resistance that control signal isolator is connected therewith, the control signal bleeder circuit of control signal isolator and the parallel connection of control signal sample resistance therewith, form with described control signal sample resistance, the control signal comparer that control signal bleeder circuit is connected, described control signal bleeder circuit is composed in series by 5v power supply-the first control signal divider resistance-the second control signal divider resistance
Described position feed back signal testing circuit is by the position feed back signal isolator being connected with actuator by position feed back signal line, the position feed back signal sample resistance that position feed back signal isolator is connected therewith, the position feed back signal bleeder circuit of position feed back signal isolator and the parallel connection of position feed back signal sample resistance therewith, with described position feed back signal sample resistance, the position feed back signal comparer that position feed back signal bleeder circuit is connected forms, described position feed back signal bleeder circuit is made up of 5v power supply-primary importance feedback signal divider resistance-second place feedback signal divider resistance,
Described control signal comparer, position feed back signal comparer are connected with described logic judging circuit,
Described cutting-off controlling circuit is made up of the on-off circuit being connected with described logic judging circuit and on-off circuit is connected therewith the time relay, and this time relay is connected with actuator.
The signal that described control signal isolator takes out is 4-20mA standard current signal, and the signal that described position feed back signal isolator takes out is 4-20mA standard current signal.
The output of described control signal bleeder circuit and described position feed back signal bleeder circuit are output as 1v reference voltage signal.
Method of the present invention is divided by testing circuit, logic judging circuit and three parts of cutting-off controlling circuit and is formed.Circuit can be integrated into actuator inside, also can make independently device and be installed near actuator equipment.Actuator power supply is linked into the contactor power end of this circuit or device, and then is drawn out to actuator power end from contactor output terminal, and the fault automatic detection circuit that this contactor break-make is made up of testing circuit, logic judging circuit is controlled.
Testing circuit part, adopts signal isolation circuit, takes out respectively control signal and position feed back signal.The standard current signal that two-way is taken out is processed, two-way current signal becomes respectively with two reference voltage signals that set of voltage signal by resistance and compares respectively by two voltage comparator circuits, output digit signals, two digital signals of output are carried out digital operation by logical circuit again, make to be finally output as 1 under failure condition, the conducting of gauge tap circuit, after on-off circuit conducting, control timing relay, according to the actuator travel set of time timing relay time, avoid misoperation, cut-offfing of power contactor controlled in the connection of timing relay.After contactor disconnects, can there is not swing situation in fault actuator again.Realize fault detect and automatic cut-off power function.
Advantage of the present invention is:
1, increase the self-diagnostic function of actuator.
2, automatically disconnect actuator power supply, fault actuator is departed from and produce.
3, after power supply disconnects, can manually control actuator with all kinds of valves, the aperture of air door.
4, can avoid actuator failures to cause the serious harm to producing.
Accompanying drawing explanation
Fig. 1 is work schematic diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
As shown in Figure 1, automatic detection and the shearing device of actuator internal fault of the present invention, it is characterized in that by the testing circuit being connected with actuator by signal wire, the logic judging circuit 13 that testing circuit is connected therewith, the cutting-off controlling circuit that logic judging circuit 13 is connected therewith and the contactor 17 that cutting-off controlling circuit is connected therewith form, this contactor 17 is connected to manually between detector switch 16 and actuator 18
Described testing circuit is made up of control signal testing circuit and position feed back signal testing circuit,
Described control signal testing circuit is by the control signal isolator 6 being connected with actuator 18 by control signal wire 2, the control signal sample resistance 5 that control signal isolator 6 is connected therewith, the control signal bleeder circuit of control signal isolator 6 and 5 parallel connections of control signal sample resistance therewith, form with described control signal sample resistance 5, the control signal comparer 7 that control signal bleeder circuit is connected, described control signal bleeder circuit is composed in series by 5v power supply-the first control signal divider resistance 4-the second control signal divider resistance 3
Described position feed back signal testing circuit is by the position feed back signal isolator 11 being connected with actuator 18 by position feed back signal line 1, the position feed back signal sample resistance 10 that position feed back signal isolator 11 is connected therewith, the position feed back signal bleeder circuit of position feed back signal isolator 11 and 10 parallel connections of position feed back signal sample resistance therewith, with described position feed back signal sample resistance 10, the position feed back signal comparer 12 that position feed back signal bleeder circuit is connected forms, described position feed back signal bleeder circuit is made up of 5v power supply-primary importance feedback signal divider resistance 9-second place feedback signal divider resistance 8,
Described control signal comparer 7, position feed back signal comparer 12 are connected with described logic judging circuit 13,
Described cutting-off controlling circuit is made up of the on-off circuit 14 being connected with described logic judging circuit 13 and on-off circuit 14 is connected therewith the time relay 15, and this time relay 15 is connected with actuator 18.
The signal that described control signal isolator 6 takes out is 4-20mA standard current signal, and the signal that described position feed back signal isolator 11 takes out is 4-20mA standard current signal.
The output of described control signal bleeder circuit and described position feed back signal bleeder circuit are output as 1v reference voltage signal.
The manual detector switch of label 16 in figure for being connected with contactor 17; 19 for example, for using the equipment of actuator 18, valve, air door; The electrical source of power of label 20 for being connected with manual detector switch 16.
Testing circuit part of the present invention adopts signal isolator, takes out respectively control signal and position feed back signal.The standard current signal that two-way is taken out is processed, two-way 4-20mA current signal becomes respectively with two reference voltages that set of voltage signal (1v) signal by resistance and compares respectively by the integrated circuit (IC) chip of two voltage comparators, output digit signals, two digital signals (totally 4 groups of combinations) of output are carried out digital operation by the chip of logical circuit again, make to be finally output as 1 under failure condition, the conducting of gauge tap circuit, after on-off circuit conducting, control timing relay, according to the actuator travel set of time timing relay time, avoid misoperation, cut-offfing of power contactor controlled in the connection of timing relay.After contactor disconnects, can there is not swing situation in fault actuator again.Realize fault detect and automatic cut-off power function.
Claims (3)
1. automatic detection and the shearing device of an actuator internal fault, it is characterized in that by the testing circuit being connected with actuator by signal wire, the logic judging circuit that testing circuit is connected therewith, the cutting-off controlling circuit that logic judging circuit is connected therewith and the contactor that cutting-off controlling circuit is connected therewith form, this contactor is connected to manually between detector switch and actuator
Described testing circuit is made up of control signal testing circuit and position feed back signal testing circuit, described control signal testing circuit is by the control signal isolator being connected with actuator by control signal wire, the control signal sample resistance that control signal isolator is connected therewith, the control signal bleeder circuit of control signal isolator and the parallel connection of control signal sample resistance therewith, with described control signal sample resistance, the control signal comparer that control signal bleeder circuit is connected forms, described control signal bleeder circuit is composed in series by 5v power supply-the first control signal divider resistance-the second control signal divider resistance,
Described position feed back signal testing circuit is by the position feed back signal isolator being connected with actuator by position feed back signal line, the position feed back signal sample resistance that position feed back signal isolator is connected therewith, the position feed back signal bleeder circuit of position feed back signal isolator and the parallel connection of position feed back signal sample resistance therewith, with described position feed back signal sample resistance, the position feed back signal comparer that position feed back signal bleeder circuit is connected forms, described position feed back signal bleeder circuit is made up of 5v power supply-primary importance feedback signal divider resistance-second place feedback signal divider resistance,
Described control signal comparer, position feed back signal comparer are connected with described logic judging circuit,
Described cutting-off controlling circuit is made up of the on-off circuit being connected with described logic judging circuit and on-off circuit is connected therewith the time relay, and this time relay is connected with actuator.
2. automatic detection and the shearing device of actuator internal fault according to claim 1, it is characterized in that the signal that described control signal isolator takes out is 4-20mA standard current signal, the signal that described position feed back signal isolator takes out is 4-20mA standard current signal.
3. automatic detection and the shearing device of actuator internal fault according to claim 1, is characterized in that the output of described control signal bleeder circuit and described position feed back signal bleeder circuit are output as 1v reference voltage signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410109540.3A CN103914061B (en) | 2014-03-21 | 2014-03-21 | The automatic detection of performer internal fault and shut-off device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410109540.3A CN103914061B (en) | 2014-03-21 | 2014-03-21 | The automatic detection of performer internal fault and shut-off device |
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| CN103914061A true CN103914061A (en) | 2014-07-09 |
| CN103914061B CN103914061B (en) | 2016-06-01 |
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| CN201410109540.3A Active CN103914061B (en) | 2014-03-21 | 2014-03-21 | The automatic detection of performer internal fault and shut-off device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108345244A (en) * | 2018-01-29 | 2018-07-31 | 中国第汽车股份有限公司 | Control the self diagnosis driving method and circuit of internal combustion engines electricmagnetic actuator |
| CN109505795A (en) * | 2019-01-11 | 2019-03-22 | 华电国际电力股份有限公司邹县发电厂 | Controlled blade of forced-draft-fan circuit breaking protective system and its method |
| CN110130967A (en) * | 2019-03-26 | 2019-08-16 | 淮北矿业股份有限公司 | A kind of booster safeguards technique prevents gas exceeding limit device and method |
| CN111338329A (en) * | 2020-05-20 | 2020-06-26 | 季华实验室 | Robot servo system, fault debugging method and device thereof, and electronic equipment |
| CN112904225A (en) * | 2021-01-05 | 2021-06-04 | 珠海格力电器股份有限公司 | Fault detection system of actuator |
| CN113298328A (en) * | 2020-02-19 | 2021-08-24 | 北京国电智深控制技术有限公司 | Method and device for detecting state of actuating mechanism |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108345244A (en) * | 2018-01-29 | 2018-07-31 | 中国第汽车股份有限公司 | Control the self diagnosis driving method and circuit of internal combustion engines electricmagnetic actuator |
| CN109505795A (en) * | 2019-01-11 | 2019-03-22 | 华电国际电力股份有限公司邹县发电厂 | Controlled blade of forced-draft-fan circuit breaking protective system and its method |
| CN110130967A (en) * | 2019-03-26 | 2019-08-16 | 淮北矿业股份有限公司 | A kind of booster safeguards technique prevents gas exceeding limit device and method |
| CN113298328A (en) * | 2020-02-19 | 2021-08-24 | 北京国电智深控制技术有限公司 | Method and device for detecting state of actuating mechanism |
| CN113298328B (en) * | 2020-02-19 | 2024-02-06 | 北京国电智深控制技术有限公司 | Method and device for detecting state of actuating mechanism |
| CN111338329A (en) * | 2020-05-20 | 2020-06-26 | 季华实验室 | Robot servo system, fault debugging method and device thereof, and electronic equipment |
| CN111338329B (en) * | 2020-05-20 | 2020-08-25 | 季华实验室 | Robot servo system, fault debugging method and device thereof, and electronic equipment |
| CN112904225A (en) * | 2021-01-05 | 2021-06-04 | 珠海格力电器股份有限公司 | Fault detection system of actuator |
| CN112904225B (en) * | 2021-01-05 | 2021-12-03 | 珠海格力电器股份有限公司 | Fault detection system of actuator |
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| CN103914061B (en) | 2016-06-01 |
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Address after: 114001 Anshan District, Liaoning, No. 219 Road, No. 39, Tiedong Patentee after: Anshan Iron and Steel Group Mining Co., Ltd. Address before: 114001 Anshan District, Liaoning, No. 219 Road, No. 39, Tiedong Patentee before: Anshan Iron & Steel Group Mining Co., Ltd. |