CN203201666U - Overspeed controlling and alarm device for electronic speed regulator of drilling diesel generator - Google Patents
Overspeed controlling and alarm device for electronic speed regulator of drilling diesel generator Download PDFInfo
- Publication number
- CN203201666U CN203201666U CN 201220712618 CN201220712618U CN203201666U CN 203201666 U CN203201666 U CN 203201666U CN 201220712618 CN201220712618 CN 201220712618 CN 201220712618 U CN201220712618 U CN 201220712618U CN 203201666 U CN203201666 U CN 203201666U
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- testing circuit
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- speed regulator
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
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Abstract
The utility model discloses an overspeed controlling and alarm device for an electronic speed regulator of a drilling diesel generator, and the device comprises a power supply circuit, an alarm circuit, a detection circuit, a relay, and a revolution speed transducer. The overspeed controlling and alarm device for the electronic speed regulator of the drilling diesel generator is characterized in that a coil of the relay is connected between an output of the power supply circuit and an output of the detection circuit, a normally-closed contact of the relay is connected between the electronic speed regulator of the diesel generator and an actuator, and power is supplied to the alarm circuit by the power supply circuit via a normally-open contact of the relay. The revolution speed transducer detects the revolution speed of a flywheel of a diesel engine, converts a revolution speed signal to an electric signal, and then outputs the electric signal to the detection circuit and the electronic speed regulator. The detection circuit receives the electric signal outputted from the revolution speed transducer, and compares a frequency of the electric signal with a central frequency of an oscillator in the detection circuit. If the frequency of the electric signal outputted from the revolution speed transducer is higher than the central frequency of the oscillator in the detection circuit, the normally-closed contact of the relay breaks, and the actuator stops working.
Description
Technical field
The utility model relates to control gear, is specifically related to the control of drilling well diesel generator electronic speed regulator hypervelocity and warning device.
Background technique
The drilling well diesel generator is easy to cause diesel engine speed out of hand because of the electronic speed regulator fault, surpasses the highest use rotating speed phenomenon of regulation.When the overspeed fault occurring, only depend on the mechanical device of diesel engine intake passage to block air inlet, force to make diesel engine to be shut down; When diesel engine used the mechanical device of gas-entered passageway to lose efficacy, the substantial equipment fault that overspeed damages diesel engine will appear.
The model utility content
Technical problem to be solved in the utility model is to provide the control of drilling well diesel generator electronic speed regulator hypervelocity and warning device.
In order to address the above problem, the technical solution of the utility model is, the control of drilling well diesel generator electronic speed regulator hypervelocity and warning device, comprise power circuit, alarm circuit, testing circuit, relay and speed probe, it is characterized in that: the coil of described relay is connected between the output of described power circuit output and described testing circuit, the normally-closed contact of described relay is connected between diesel generator electronic speed regulator and the final controlling element, and described power circuit is the alarm circuit power supply by the normally opened contact of described relay; Described speed probe detects the rotating speed of diesel engine flywheel, converts tach signal to electrical signal and outputs to described testing circuit and electronic speed regulator; Described testing circuit receives the electrical signal of described speed probe output, compare with the CF center frequency of testing circuit internal oscillator, when the frequency of the electrical signal of described speed probe output is lower than the CF center frequency of described testing circuit internal oscillator, described testing circuit output high level, the coil losing electricity of control relay; When the frequency of the electrical signal of described speed probe output is higher than the CF center frequency of described testing circuit internal oscillator, the coil of described testing circuit output low level control relay gets, the relay normally open contact adhesive, alarm circuit is reported to the police, the relay normally-closed contact disconnects, and final controlling element quits work.
According to the preferred version of drilling well diesel generator electronic speed regulator hypervelocity described in the utility model control with warning device, described speed probe is selected magnetoelectric tachometric transducer, radially be arranged on the diesel engine flywheel casing, the spacing of speed probe end face and diesel engine flywheel teeth end face is 0.5-0.8mm.
Drilling well diesel generator electronic speed regulator hypervelocity described in the utility model control with the beneficial effect of warning device is: the throttle actuator power supply that the utility model can in time be reported to the police and cut off Digital Governor for Diesel Engine when the drilling diesel engine over speed of rotation, prevent that because of the electronic speed regulator fault hypervelocity causes the generation of drilling diesel engine damage accident; The utility model is simple in structure, the reliability height, and precise control can be widely used in the diesel generator.
Description of drawings
Fig. 1 is the circuit theory diagrams of drilling well diesel generator electronic speed regulator hypervelocity described in the utility model control and warning device.
Embodiment
Referring to Fig. 1, the control of drilling well diesel generator electronic speed regulator hypervelocity and warning device, constituted by power circuit, alarm circuit 2, testing circuit 4, tachometer 5, relay and speed probe 7, wherein: the coil J of described relay is connected between the output of described power circuit output and described testing circuit 4, the normally-closed contact J2 of described relay is connected between diesel generator electronic speed regulator 8 and the final controlling element 13, and described power circuit is alarm circuit 2 power supplies by the normally opened contact J1 of described relay; Described speed probe 7 detects the rotating speed of diesel engine flywheel 6, converts tach signal to electrical signal and outputs to described testing circuit 4 and tachometer 5 and electronic speed regulator 8; Described speed probe 7 is selected magnetoelectric tachometric transducer, radially is arranged on diesel engine flywheel 6 shells, and the spacing of speed probe 7 end faces and diesel engine flywheel 6 Toplands is 0.5-0.8mm; Described testing circuit 4 receives the electrical signal of described speed probe 7 outputs, compare with the CF center frequency of testing circuit 4 internal oscillators, when the frequency of the electrical signal of described speed probe 7 outputs is lower than the CF center frequency of described testing circuit 4 internal oscillators, described testing circuit 4 output high level, the coil J dead electricity of control relay; When the frequency of the electrical signal of described speed probe 7 outputs is higher than the CF center frequency of described testing circuit 4 internal oscillators, the coil J of described testing circuit 4 output low level control relays gets, relay normally open contact J1 adhesive, alarm circuit 2 is reported to the police, relay normally-closed contact J2 disconnects, and final controlling element 13 quits work.
In specific embodiment, power circuit is made of power supply decompression rectifier filter circuit 1 and mu balanced circuit 3; Control circuit 4 is made up of IC 2, resistor R2, potentiometer RP, capacitor C3-C6 and diode D1; IC 2 is LM567;
The working principle of this model utility is: the teeth when speed probe 7 rotates by diesel engine flywheel 6 on the flywheel convert magnetic signal to sine wave signal, the rotating speed of the frequency response diesel engine of sine wave signal.Its formula is as follows:
Tooth number Z/60 of pulse frequency f (Hz)=rotation speed n (1/min) x diesel engine flywheel
F: pulse frequency
N: diesel engine speed
Z: the number of teeth of diesel engine flywheel
For example: n=1000, z=183
f=1000x183/60=3050Hz
The diesel generator speed feedback signal adds to 3 pin of intergrated circuit LM567 through capacitor C 3, when if the frequency of the 3 pin input signals of intergrated circuit LM567 drops near its internal voltage controlled oscillator CF center frequency fo, logic output terminal 8 pin of intergrated circuit LM567 will become low level by former high level, export a negative impulse.Change potentiometer RP and can change the frequency-selecting frequency.During concrete the use, timing resistor R2, the potentiometer RP that 5,6 pin of intergrated circuit LM567 are external and capacitor C 4 determine the CF center frequency fo of internal voltage controlled oscillator.The number of teeth that with the rated speed is 10OOr/min, diesel engine flywheel is that 183 diesel generator is example, when the overspeed alarming rotating speed being set being 11OOr/min, and the electrical signal frequency of speed probe 7 outputs:
f=1100x183/60=3355Hz；
Be 0.1uf if choose C, according to:
Fo=3355Hz=1/1.1RC, result of calculation: R=2.71k
R=R2+RP can choose R2=2K, RP=1K
Adjust RP, make fo=3355Hz
When the diesel generator rotating speed was 10OOr/min, the electrical signal frequency of speed probe 7 outputs was 305OHz, is lower than the CF center frequency 3355Hz of IC 2 internal oscillators, the 8 pin output high level of lC2, relay coil J dead electricity; Alarm is not worked, and the control signal of electronic speed regulator output normally moves final controlling element by the normally-closed contact of relay.
When the rotating speed of diesel generator is increased to 1100r/min, f=1100x183/60=3355Hz, the sensor output signal frequency is 3355Hz, identical with the CF center frequency of IC 2 internal oscillators, 8 pin output low levels of IC 2, the coil J of relay gets, relay normally open contact J1 adhesive, relay normally-closed contact J2 disconnects, and alarm circuit 2 is reported to the police, and informs staff's diesel engine generation high speed operation fault; Because electronic speed regulator 8 is connected with final controlling element 13 by the normally-closed contact J2 of cable 9 and relay, final controlling element 13 connects high pressure oil pump 12 by rocking arm 10, connecting rod 11; Relay normally-closed contact J2 disconnects, and final controlling element 13 is quit work, and has cut off the oil supply loop of diesel engine, forces diesel engine to be shut down.
During circuit debugging, at high-precision signal generator of 2 liang of terminations of resistance R, signal output frequency is transferred to 3355Hz, the voltage peak-to-peak value is 5V, adjusts the resistance of RP then, makes relay just till the adhesive.
Claims (2)
1. drilling well diesel generator electronic speed regulator hypervelocity is controlled and warning device, comprise power circuit, alarm circuit (2), testing circuit (4), relay and speed probe (7), it is characterized in that: the coil of described relay (J) is connected between the output of described power circuit output and described testing circuit (4), the normally-closed contact of described relay (J2) is connected between diesel generator electronic speed regulator (8) and the final controlling element (13), and described power circuit is alarm circuit (2) power supply by the normally opened contact (J1) of described relay; Described speed probe (7) detects the rotating speed of diesel engine flywheel (6), converts tach signal to electrical signal and outputs to described testing circuit (4) and electronic speed regulator (8); Described testing circuit (4) receives the electrical signal of described speed probe (7) output, compare with the CF center frequency of testing circuit (4) internal oscillator, when the frequency of the electrical signal of described speed probe (7) output is lower than the CF center frequency of described testing circuit (4) internal oscillator, described testing circuit (4) output high level, the coil of control relay (J) dead electricity; When the frequency of the electrical signal of described speed probe (7) output is higher than the CF center frequency of described testing circuit (4) internal oscillator, the coil (J) of described testing circuit (4) output low level control relay, relay normally open contact (J1) adhesive, alarm circuit (2) is reported to the police, relay normally-closed contact (J2) disconnects, and final controlling element (13) quits work.
2. drilling well diesel generator electronic speed regulator hypervelocity according to claim 1 is controlled and warning device, it is characterized in that: described speed probe (7) is selected magnetoelectric tachometric transducer, radially be arranged on diesel engine flywheel (6) shell, the spacing of speed probe (7) end face and diesel engine flywheel (6) Topland is 0.5-0.8mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220712618 CN203201666U (en) | 2012-12-21 | 2012-12-21 | Overspeed controlling and alarm device for electronic speed regulator of drilling diesel generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220712618 CN203201666U (en) | 2012-12-21 | 2012-12-21 | Overspeed controlling and alarm device for electronic speed regulator of drilling diesel generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203201666U true CN203201666U (en) | 2013-09-18 |
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ID=49145780
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220712618 Expired - Fee Related CN203201666U (en) | 2012-12-21 | 2012-12-21 | Overspeed controlling and alarm device for electronic speed regulator of drilling diesel generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203201666U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117129859A (en) * | 2023-08-25 | 2023-11-28 | 华能山东石岛湾核电有限公司 | Static starting device for simulating high-temperature gas cooled reactor emergency diesel generator |
-
2012
- 2012-12-21 CN CN 201220712618 patent/CN203201666U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117129859A (en) * | 2023-08-25 | 2023-11-28 | 华能山东石岛湾核电有限公司 | Static starting device for simulating high-temperature gas cooled reactor emergency diesel generator |
| CN117129859B (en) * | 2023-08-25 | 2024-05-24 | 华能山东石岛湾核电有限公司 | Static starting device for simulating high-temperature gas cooled reactor emergency diesel generator |
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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: 20130918 Termination date: 20151221 |
|
| EXPY | Termination of patent right or utility model |