CN201918787U - Backup power circuit used for logging tool while drilling - Google Patents
Backup power circuit used for logging tool while drilling Download PDFInfo
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- CN201918787U CN201918787U CN2010206258194U CN201020625819U CN201918787U CN 201918787 U CN201918787 U CN 201918787U CN 2010206258194 U CN2010206258194 U CN 2010206258194U CN 201020625819 U CN201020625819 U CN 201020625819U CN 201918787 U CN201918787 U CN 201918787U
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- circuit
- control circuit
- drilling
- voltage stabilizing
- power
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Abstract
The utility model provides a backup power circuit used for a logging tool while drilling. The circuit comprises a voltage stabilizing circuit, a trigger circuit, a switching circuit and a control circuit, wherein the input end of the voltage stabilizing circuit is connected with a power supply and the trigger circuit, and the output end of the voltage stabilizing circuit is respectively connected with the switching circuit and the control circuit; the control circuit is connected with the switching circuit to form a loop; and the output end of the trigger circuit is connected with the control circuit. The backup power circuit can supply power for the logging tool while drilling in the limited time, ensures the intact storing of the monitoring data or control parameters of the logging tool while drilling and prevents data loss owing to unexpected power failure; moreover, the backup power circuit has few devices, simple structure and strong practicability.
Description
Technical field
The utility model relates to a kind of supply unit that is used for drilling equipment, the power backup circuit when being specifically related to a kind of measurement while drilling or the termination of pumping of well logging during instrument work.
Background technology
At present, have in the measurement while drilling or well logging during instrument of generator, promote the instrument generator amature by mud and rotate, mechanical energy is converted to electric energy, power to instrument in design.This instrument has saved a large amount of High Temperature Lithium Cell, has both reduced the pollution to environment, more avoided owing to battery uses the blast injury accident of slipping up and causing.
Directed drilling is a very complicated field construction operation, has the big characteristics of the excessive risk of input, therefore needs measurement while drilling or well logging during instrument and removes the down-hole with drilling tool one, realizes the purpose of measuring while creeping into.Measurement While Drilling Data can instruct shaft mouth operation at any time, adjusts construction plan, misses the target and drilling tool damage equivalent risk with minimizing, has also improved the construction timeliness on the other hand.
In some other wellbore construction operating process such as interpolation drilling rod, usually need flowing of Halfway Stopping well mud.At this moment, the instrument generator does not have power supply output, and some data of instrument will be lost.This itself is very disadvantageous to measurement while drilling/well logging during construction.
The utility model content
The utility model provides a kind of and is used for the power backup circuit of boring instrument, simple in structure, circuit is reliable, practical, guarantee with boring complete storage measurement of instrument and control data.
For achieving the above object, the technical solution of the utility model is as follows: a kind of being used for is characterized in that with the power backup circuit of boring instrument this circuit comprises voltage stabilizing circuit, circuits for triggering, switching circuit and control circuit;
The input of above-mentioned voltage stabilizing circuit connects power supply and circuits for triggering, and the output of this voltage stabilizing circuit is connected with control circuit with said switching circuit respectively;
Above-mentioned control circuit and switching circuit connect into the loop;
The output of above-mentioned circuits for triggering is connected with control circuit.
Also be connected with big capacity reserve electric capacity between above-mentioned voltage stabilizing circuit and the switching circuit.
Also be connected with backup battery in the loop between above-mentioned control circuit and the switching circuit; This backup battery is arranged on the input of control circuit.
During operate as normal, the voltage stabilizing circuit out-put supply is to switching circuit and control circuit, and the trigger switch circuit makes conducting between control circuit and the power supply, and control circuit is in normal operating conditions.
Undesired when machine operation, when power supply output reduced, circuits for triggering sent triggering signal, make control circuit in time preserve operational data; After operational data was preserved and finished, the control circuit output signal made the circuit of switching circuit switched conductive, allows control circuit enter the power saving idling conditions.
The utility model is used for the power backup circuit of boring instrument, compare with prior art, its advantage is, the utility model is provided with backup battery, can be to powering in finite time with boring instrument, assurance is with boring instrument with Monitoring Data or the complete preservation of Control Parameter, can be because of sudden power obliterated data;
It is more faster than the decrease speed of control circuit input end supply voltage that the circuits for triggering of the utility model power backup circuit detect the speed that supply voltage descends, and can in time detect the generation of termination of pumping incident in early days, and trigger control circuit is carried out data and preserved;
Power backup circuit components and parts of the present utility model are few, and are simple in structure and practical.
Description of drawings
Fig. 1 is used for circuit diagram with the power backup circuit of boring instrument for the utility model;
Fig. 2 is used for circuit diagram with the switching circuit of the power backup circuit of boring instrument for the utility model.
Embodiment
Below in conjunction with description of drawings embodiment of the present utility model.
As shown in Figure 1, the utility model has illustrated a kind of being used for the power backup circuit of boring instrument.This power backup circuit comprises voltage stabilizing circuit 1, circuits for triggering 2, switching circuit 3 and control circuit 4.
The inlet circuit of voltage stabilizing circuit 1 connects power supply RAW-DC, and this power supply RAW-DC is the power supply after handling through the front end rectifying and voltage-stabilizing with the generator output of boring instrument.
The input of voltage stabilizing circuit 1 also connects circuits for triggering 2.These circuits for triggering 2 comprise series resistance R1 and the schmitt inverter U1 that resistance is 30K ohm, and also being parallel with the appearance value between resistance R 1 and schmitt inverter U1 is the capacitor C 1 of 0.1 microfarad and the voltage-stabiliser tube Z1 that nominal value is 3.3V.The other end ground connection of this capacitor C 1 and voltage-stabiliser tube Z1.The output of schmitt inverter U1 connects control circuit 4, sends triggering signal to control circuit 4.
The output of voltage stabilizing circuit 1 be connected in series successively diode D1 and diode D2, the model of diode D1 and diode D2 is IN4007.The negative pole of diode D2 connects the power end F-PWR of control circuit 4.It is 5.1 ohm resistance R 2 that the negative pole of diode D1 also connects resistance, the other end of resistance R 2 connects big capacity reserve electric capacity BC, big capacity reserve electric capacity BC is composed in parallel by the electric capacity of 5 6800 microfarads, and total capacity is 34000 microfarads, the other end ground connection of this big capacity reserve electric capacity BC.Big capacity reserve electric capacity BC provides of short duration power supply for constantly control circuit 4 in the drilling mud pump termination of pumping.
The power end F-PWR of control circuit 4 also is serially connected with diode D3 and backup battery BB, backup battery BB is that output voltage is 3.6 volts a High Temperature Lithium Cell, the minus earth of this backup battery BB, backup battery BB is used in the occasion that can not use big capacity reserve electric capacity BC, gives control circuit 4 power supplies constantly in termination of pumping.
As shown in Figure 1, the pin G1 of U2 is connected between resistance R 2 and the electric capacity BC, pin S2 connects the negative pole of backup battery BB, pin G2 connects the backup battery BB control end BB-CTRL of control circuit 4, pin D2 connects the ground end F-GND of control circuit 4, pin S1 connects the negative pole of backup battery BB, and pin D1 connects the ground end F-GND of control circuit 4.
The utility model is used for the operation workflow of the power backup circuit of boring instrument as follows:
When the drilling mud proper flow, behind the generator process front end rectifying and voltage-stabilizing, the power supply RAW-DC of output is between 16 ~ 40 volts.Power supply RAW-DC is passed to voltage stabilizing circuit 1, and the DC power supply of one+5V of this voltage stabilizing circuit 1 output is reduced to about 4.4 volts behind the DC power supply process diode D1 of+5V, and is divided into two-way.Lead up to and reduce to about 3.8 volts again behind the diode D2, be carried in the power end F-PWR of control circuit 4.Big capacity reserve electric capacity BC charging is given by resistance R 2 in another road.After the positive terminal of big capacity reserve electric capacity BC reaches certain amplitude, i.e. the G1 pin of trigger switch circuit 3, conducting between D1 and the S1 makes the ground end F-GND of control circuit 4 and power supply ground connect the control circuit operate as normal.Simultaneously, because RAW-DC is a high level, the schmitt inverter U1 of circuits for triggering 2 is output as the low level door.Then power backup pond BB is because under the effect of diode D2 and diode D3, its output is blocked when the generator operate as normal, and no electric energy is exported.
Under the out-of-work situation of slush pump, the output of power supply RAW-DC reduces gradually.Voltage between resistance R 1 and voltage-stabiliser tube Z1 is lower than the low level threshold value of schmitt inverter U1, and the output of schmitt inverter U1 is promptly jumped and is high level, instrument parameter when trigger control circuit 4 is preserved engineer operation at once and measurement result.Wherein, the low level threshold value that schmitt inverter U1 negative sense triggers has direct relation with the amplitude of its power supply, changes numerical value=F_PWR*0.67+0.7(volt in the termination of pumping process with supply voltage F_PWR).Because the decrease speed of the power supply RAW-DC voltage of schmitt inverter U1 input is more a lot of soon than the decrease speed of control circuit 4 power end F-PWR, so can in time send triggering signal in early days what power supply RAW-DC voltage descended to control circuit 4, trigger control circuit 4 is preserved data, guarantees that data can complete preservation.
When generator was not worked, voltage that back-up source output is about 2.7 volts and 10 milliamperes operating current were kept system's operate as normal, and after detecting the termination of pumping generator and not working, control circuit 4 has two seconds time to finish the storage protection work of field data.
Do not needing to keep for a long time under the situation of power supply with boring instrument, control circuit 4 is made as height with the BB-CTRL end after having preserved data message, connect the G2 switch of 3 times U2 of switching circuit, and conducting between S2 and the D2 is powered to control circuit.Microcontroller is after switching to battery saving mode with hardware circuit, and oneself promptly enters resting state.
Although content of the present utility model has been done detailed introduction by above preferred embodiment, will be appreciated that above-mentioned description should not be considered to restriction of the present utility model.After those skilled in the art have read foregoing, for multiple modification of the present utility model with to substitute all will be conspicuous.Therefore, protection range of the present utility model should be limited to the appended claims.
Claims (3)
1. one kind is used for it is characterized in that with the power backup circuit of boring instrument this circuit comprises voltage stabilizing circuit (1), circuits for triggering (2), switching circuit (3) and control circuit (4);
The input of described voltage stabilizing circuit (1) connects power supply RAW-DC and circuits for triggering (2), and the output of this voltage stabilizing circuit (1) is connected with control circuit (4) with described switching circuit (3) respectively;
Described control circuit (4) connects into the loop with described switching circuit (3);
The output of described circuits for triggering (2) is connected with described control circuit (4).
2. as claimed in claim 1 being used for is characterized in that with the power backup circuit of boring instrument, also is connected with big capacity reserve electric capacity between described voltage stabilizing circuit (1) and the switching circuit (3).
3. as claimed in claim 1 being used for is characterized in that with the power backup circuit of boring instrument, also is connected with backup battery in the loop between described control circuit (4) and the described switching circuit (3); Described backup battery is arranged on the input of described control circuit (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206258194U CN201918787U (en) | 2010-11-26 | 2010-11-26 | Backup power circuit used for logging tool while drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206258194U CN201918787U (en) | 2010-11-26 | 2010-11-26 | Backup power circuit used for logging tool while drilling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201918787U true CN201918787U (en) | 2011-08-03 |
Family
ID=44418576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206258194U Expired - Fee Related CN201918787U (en) | 2010-11-26 | 2010-11-26 | Backup power circuit used for logging tool while drilling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201918787U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102005809A (en) * | 2010-11-26 | 2011-04-06 | 上海神开石油化工装备股份有限公司 | Backup power supply circuit of logging-while-drilling instrument |
| CN107579663A (en) * | 2017-10-26 | 2018-01-12 | 中国石油集团渤海钻探工程有限公司 | It is a kind of to rise 60V power supplys with 36V with brill high-speed pulse device |
-
2010
- 2010-11-26 CN CN2010206258194U patent/CN201918787U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102005809A (en) * | 2010-11-26 | 2011-04-06 | 上海神开石油化工装备股份有限公司 | Backup power supply circuit of logging-while-drilling instrument |
| CN102005809B (en) * | 2010-11-26 | 2012-11-07 | 上海神开石油化工装备股份有限公司 | Backup power supply circuit of logging-while-drilling instrument |
| CN107579663A (en) * | 2017-10-26 | 2018-01-12 | 中国石油集团渤海钻探工程有限公司 | It is a kind of to rise 60V power supplys with 36V with brill high-speed pulse device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110803 Termination date: 20131126 |