CN202994951U - Diesel-engine fuel-cut-off solenoid valve coil break line detection apparatus - Google Patents
Diesel-engine fuel-cut-off solenoid valve coil break line detection apparatus Download PDFInfo
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- CN202994951U CN202994951U CN 201220657714 CN201220657714U CN202994951U CN 202994951 U CN202994951 U CN 202994951U CN 201220657714 CN201220657714 CN 201220657714 CN 201220657714 U CN201220657714 U CN 201220657714U CN 202994951 U CN202994951 U CN 202994951U
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- solenoid
- stops
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- solenoid valve
- cut
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Abstract
The utility model discloses a diesel-engine fuel-cut-off solenoid valve coil break line detection apparatus. The apparatus comprises a remote button, a sensor contact, diodes and a fuel-cut-off solenoid valve, a resistor and a break line detection module, wherein the remote button, the sensor contact, the diodes and the fuel-cut-off solenoid valve are connected in series to a direct current control loop. The resistor is connected in parallel with two ends of the remote button or the sensor contact. The two diodes are connected in series to a rear end of the fuel-cut-off solenoid valve coil. A voltage comparator of the break line detection module monitors a voltage to earth of the diodes in a fuel-cut-off solenoid valve loop. When the voltage is lower than a setting reference voltage, the voltage comparator outputs a signal and a triode is conducted so as to drive an inching relay in the break line detection module to act and output a break line fault. The voltage to earth of the diodes in the fuel-cut-off solenoid valve loop can be used to determine whether the fuel-cut-off solenoid valve acts correctly. The apparatus of the utility model is used in a diesel engine safety protection system and is used to monitor a cable connection condition of the fuel-cut-off solenoid valve control loop of an emergency shutdown and safe shutdown execution mechanism.
Description
Technical field
The utility model relates to pick-up unit, and particularly a kind of diesel engine stops solenoid coil breakage pick-up unit.
Background technology
In the diesel engine safety system, stop solenoid and can guarantee diesel engine emergency in urgent and significant trouble situation.When controlling contact (especially long-range contact) and stopping circuit between solenoid when being connected faults such as loose contact or broken string occur, the uncontrollable solenoid that stops will appear, and make diesel engine safety can not get guarantee.Whether be the execution guarantee that diesel engine safety is shut down, need to break and detect stopping the solenoid loop, existing detection method, trouble is installed, cost is high and operation inconvenience if mostly adopting comparatively complicated circuit to realize.
Summary of the invention
Technical problem to be solved in the utility model is: provide a kind of diesel engine to stop solenoid coil breakage pick-up unit, the problem that exists to overcome prior art.But this device real-time measure and control circuit is due to broken string, cable splice is loosening and the reason such as damaged by rats causes line fault, and output alarm.
The technical scheme that its technical matters of solving the utility model adopts is: comprise the remote button, the sensor contact that are connected in DC control circuit, stop solenoid and two diodes, also comprise resistance and burn out detection module, wherein, resistance is connected in parallel on remote button or sensor contact two ends; Two diodes are connected on the coil rear end of stopping solenoid; The burn out detection module is provided with voltage comparator, and the variation of this voltage comparator by the monitor diode voltage-to-ground, judgement stop the solenoid loop and broken string whether occurs; In addition, also can stop whether definitely action of solenoid by monitoring this voltage-to-ground variation judgement.
When described resistance can disconnect for: remote button or sensor contact, resistance was connected with stopping the solenoid coil, and because the dividing potential drop current limliting of resistance makes the electromagnetic force of stopping the solenoid coil very little, solenoid valve is failure to actuate.
The described static resistance that stops the coil of solenoid can be 20～50 ohm.
The resistance of described resistance can be 10～20k Ω.
In the utility model circuit, closed when remote button or sensor contact, during the resistance short circuit, the electric current that stops the solenoid coil of flowing through is enough to drive and stops the solenoid action, and this moment, the diode pair ground voltage was 1.67～1.8V; When resistance not during short circuit, the electric current that stops the solenoid coil of flowing through can not drive and stop the solenoid action, and this moment, the diode pair ground voltage was 1.25V.
The utility model compared with prior art mainly contains that cost is low, reliability is high and the advantages such as simple are installed.
Description of drawings
Fig. 1 stops the solenoid coil breakage to detect schematic diagram.
Fig. 2 is burn out detection module principle figure.
Embodiment
The utility model is described in further detail below in conjunction with embodiment and accompanying drawing.
The diesel engine that the utility model provides stops solenoid coil breakage pick-up unit, to stopping in emergency and safe shutdown topworks stops solenoid and carries out real-time burn out detection.When using the control circuit of this device to occur by broken string, cable splice is loosening and the reason such as damaged by rats causes line fault, export corresponding warning.
The diesel engine that the utility model provides stops solenoid coil breakage pick-up unit, its structure as depicted in figs. 1 and 2, comprise remote button SB, sensor contact S1, two diode D1 and the D2 that are connected in DC control circuit and stop solenoid, also comprising resistance R and burn out detection module.Wherein: described resistance is connected in parallel on remote button or sensor contact two ends; Described two diodes are connected on and stop solenoid coil rear end; The monitoring of the voltage comparator of described burn out detection module stops diode pair ground voltage U in the solenoid loop
in, when it lower than setting reference voltage U
rThe time, voltage comparator A output signal, triode T conducting drives microrelay K action in the burn out detection module, the output disconnection fault; Whether the described voltage-to-ground that stops diode in the solenoid loop also can be used to judgement and stops solenoid and move.
When remote button or sensor contact disconnected, resistance was connected with stopping the solenoid coil, and because the dividing potential drop current limliting of resistance makes the electromagnetic force of stopping the solenoid coil very little, solenoid valve is failure to actuate.The resistance of resistance is chosen as 10～20k Ω, perhaps decides according to actual conditions.
The described solenoid that stops, its static resistance are 20～50 ohm, can select different resistance R or diode model according to stopping the solenoid static resistance, thereby the size of current when changing circuit resistance in series R and short circuit resistance R makes diode place's voltage-to-ground variation.
Stop in the solenoid loop, when remote button or sensor contact were closed, resistance was by short circuit, and the electric current that stops the solenoid coil of flowing through enough drives and stops solenoid and move, if adopt 10k Ω resistance, stopping solenoid rear end diode pair ground voltage is 1.67～1.8V; When remote button or sensor contact disconnected, 10k Ω resistance was during short circuit, and the electric current that stops the solenoid coil of flowing through can not drive and stop the solenoid action, and stopping solenoid rear end diode pair ground voltage is 1.25V.
Described burn out detection module is by detecting U
inWhether judge whether broken string lower than reference voltage, by the detection module output circuit, status information is flowed to external alert equipment.
As shown in Figure 2, the burn out detection module adopts voltage comparator to detect input voltage, compares with reference voltage (being made as 0.8V).When input voltage value during lower than 0.8V, think that stopping the solenoid loop broken string occurs, voltage comparator output high level, the triode conducting makes the actuating of relay, the output disconnection fault; When input voltage value during higher than 0.8V, think that to stop the solenoid loop normal.While diesel engine safety system microcontroller gathers this voltage-to-ground, closed when remote button or sensor contact, if this magnitude of voltage during lower than 1.4V, judgement stops solenoid and does not move, can remind managerial personnel to stop fuel tap to the engine local control manual-operated emergent, guarantee diesel engine safety; During higher than 1.5V, judgement stops the solenoid regular event when this magnitude of voltage.
The course of work of the present utility model is: when stopping solenoid loop appearance broken string, and voltage comparator output high level in the burn out detection module, the triode conducting makes the actuating of relay, and the output disconnection fault is reported to the police, prompting managerial personnel Inspection and maintenance; When remote button or sensor contact are closed, do not move and stop solenoid, send solenoid valve failure by diesel engine safety system microcontroller and report to the police, remind managerial personnel to stop fuel tap to the engine local control manual-operated emergent, guarantee diesel engine safety.
Diesel engine of the present utility model stops solenoid coil breakage pick-up unit, has reduced testing cost, can detect in real time the line fault of diesel engine safety system actuator, and the execution that the effective guarantee diesel engine safety is shut down has good practicality.
Claims (5)
1. a diesel engine stops solenoid coil breakage pick-up unit, it is characterized in that comprising the remote button, the sensor contact that are connected in DC control circuit, stop solenoid and two diodes, also comprise resistance and burn out detection module, wherein: resistance is connected in parallel on remote button or sensor contact two ends; Two diodes are connected on the coil rear end of stopping solenoid; The burn out detection module is provided with voltage comparator, and the variation of this voltage comparator by the monitor diode voltage-to-ground, judgement stop the solenoid loop and broken string whether occurs; Also judged by this voltage-to-ground of computer monitoring and stop whether definitely action of solenoid.
2. diesel engine according to claim 1 stops solenoid coil breakage pick-up unit, it is characterized in that described resistance is: when remote button or sensor contact disconnect, resistance is connected with the coil that stops solenoid, because the dividing potential drop current limliting of resistance makes the electromagnetic force of stopping the solenoid coil very little, solenoid valve is failure to actuate.
3. diesel engine according to claim 2 stops solenoid coil breakage pick-up unit, it is characterized in that: the described static resistance that stops the solenoid coil is 20～50 ohm.
4. diesel engine according to claim 2 stops solenoid coil breakage pick-up unit, it is characterized in that described resistance is 10～20k Ω.
5. diesel engine according to claim 4 stops solenoid coil breakage pick-up unit, it is characterized in that: when remote button or sensor contact closure, resistance is during by short circuit, the electric current that stops the solenoid coil of flowing through enough drives and stops the solenoid action, and this moment, the diode pair ground voltage was 1.67～1.8V; When resistance not during short circuit, the electric current that stops the solenoid coil of flowing through can not drive and stop the solenoid action, and this moment, the diode pair ground voltage was 1.25V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220657714 CN202994951U (en) | 2012-12-04 | 2012-12-04 | Diesel-engine fuel-cut-off solenoid valve coil break line detection apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220657714 CN202994951U (en) | 2012-12-04 | 2012-12-04 | Diesel-engine fuel-cut-off solenoid valve coil break line detection apparatus |
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| CN202994951U true CN202994951U (en) | 2013-06-12 |
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|---|---|---|---|
| CN 201220657714 Expired - Fee Related CN202994951U (en) | 2012-12-04 | 2012-12-04 | Diesel-engine fuel-cut-off solenoid valve coil break line detection apparatus |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103822010A (en) * | 2014-03-17 | 2014-05-28 | 北京四方继保自动化股份有限公司 | On-line detection device and method for faults of electro-hydraulic servo valve driving coil of heat-engine plant steam turbine |
| CN104062538A (en) * | 2014-07-03 | 2014-09-24 | 郑州日产汽车有限公司 | Method for monitoring short circuit and circuit break of vehicle-mounted relay or contactor coil |
| CN104793096A (en) * | 2015-04-07 | 2015-07-22 | 上海新时达电气股份有限公司 | Working state detection circuit of electronic device |
| CN106026054A (en) * | 2016-08-08 | 2016-10-12 | 许继集团有限公司 | Digital output self-inspection circuit |
| CN107884659A (en) * | 2016-09-30 | 2018-04-06 | 纳博特斯克有限公司 | Broken thread detector |
| CN108730598A (en) * | 2017-04-17 | 2018-11-02 | 江苏核电有限公司 | A kind of nuclear power station radgas sampling solenoid valve remote control apparatus and method |
| CN109188171A (en) * | 2018-09-12 | 2019-01-11 | 苏州东安岩芯能源科技股份有限公司 | Relay coil open-circuit fault detection circuit |
| CN113359670A (en) * | 2021-06-15 | 2021-09-07 | 宁波静合科技有限公司 | Marine diesel engine fault diagnosis method based on data driving |
| CN113482986A (en) * | 2021-06-23 | 2021-10-08 | 河北津西钢板桩型钢科技有限公司 | Fault detection circuit and equipment of hydraulic control valve |
-
2012
- 2012-12-04 CN CN 201220657714 patent/CN202994951U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103822010A (en) * | 2014-03-17 | 2014-05-28 | 北京四方继保自动化股份有限公司 | On-line detection device and method for faults of electro-hydraulic servo valve driving coil of heat-engine plant steam turbine |
| CN104062538A (en) * | 2014-07-03 | 2014-09-24 | 郑州日产汽车有限公司 | Method for monitoring short circuit and circuit break of vehicle-mounted relay or contactor coil |
| CN104793096A (en) * | 2015-04-07 | 2015-07-22 | 上海新时达电气股份有限公司 | Working state detection circuit of electronic device |
| CN106026054A (en) * | 2016-08-08 | 2016-10-12 | 许继集团有限公司 | Digital output self-inspection circuit |
| CN106026054B (en) * | 2016-08-08 | 2019-02-05 | 许继集团有限公司 | One kind outputing self-checking circuit |
| CN107884659A (en) * | 2016-09-30 | 2018-04-06 | 纳博特斯克有限公司 | Broken thread detector |
| CN108730598A (en) * | 2017-04-17 | 2018-11-02 | 江苏核电有限公司 | A kind of nuclear power station radgas sampling solenoid valve remote control apparatus and method |
| CN109188171A (en) * | 2018-09-12 | 2019-01-11 | 苏州东安岩芯能源科技股份有限公司 | Relay coil open-circuit fault detection circuit |
| CN109188171B (en) * | 2018-09-12 | 2021-01-15 | 苏州东安岩芯能源科技股份有限公司 | Relay coil open-circuit fault detection circuit |
| CN113359670A (en) * | 2021-06-15 | 2021-09-07 | 宁波静合科技有限公司 | Marine diesel engine fault diagnosis method based on data driving |
| CN113482986A (en) * | 2021-06-23 | 2021-10-08 | 河北津西钢板桩型钢科技有限公司 | Fault detection circuit and equipment of hydraulic control valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130612 Termination date: 20141204 |
|
| EXPY | Termination of patent right or utility model |