CN205901253U - Oil logging instrument circuit protection device based on singlechip - Google Patents
Oil logging instrument circuit protection device based on singlechip Download PDFInfo
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- CN205901253U CN205901253U CN201620783675.2U CN201620783675U CN205901253U CN 205901253 U CN205901253 U CN 205901253U CN 201620783675 U CN201620783675 U CN 201620783675U CN 205901253 U CN205901253 U CN 205901253U
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- joint
- logging instrument
- current
- detection module
- protection device
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Abstract
The utility model discloses an oil logging instrument circuit protection device based on singlechip, including the circuit board, be provided with current detection module, singlechip and MOS switch module on the circuit board, wherein, current detection module is used for oil logging instrument's power supply interface's under the measuring well output current, the singlechip is connected with current detection module and MOS switch module respectively. Through the utility model discloses an overcurrent protect device, oil logging instrument in drilling process in the pit, when system's operating current increases suddenly, timely open circuit, protection oil logging instrument, when current recovery just often, the singlechip will recover to switch on by automatic control relay, makes circuit the normal power supply, does not need artificially to change the fuse, when having saved the manpower and materials cost, has greatly improved oil well logging efficiency.
Description
Technical field
This utility model is related to petroleum exploration well logging field, and more particularly, to SCM Based oil well logging instrument circuit is protected
Protection unit.
Background technology
Petroleum industry well logging lwd (logging while drilling) generally refers to measurement during drilling well
Formation rock physical parameter, and with data telemetry system, measurement result is delivered in real time ground and processed.Due to current data
The restriction of transmission technology, substantial amounts of data storage, in the memorizer of downhole instrument, plays back after trip-out.Measurement while drilling mwd
(measurement while drilling) generally refers to drilling engineering parameter measurement, as hole deviation, orientation and tool-face etc.
Measurement.Sometimes, mwd refers to all of underground survey during drilling well.
Due to well logging obtain formation parameter be just to have bored the formation parameter opened, it closest to the initial condition on stratum,
For more favourable than general wireline logging to the oil-containing of bad ground, gas evaluation.Connector for logging while drilling is placed in drill collar, except measurement
Outside the conventional loggings such as resistivity, the velocity of sound, neutron porosity, density and some imaging loggings, also measurement the pressure of the drill, moment of torsion, rotating speed, ring
Pneumatics power, temperature, the drilling parameter such as chemical composition.Bad environments in drill bit drilling process, temperature is very high, and pressure greatly, vibrates
Strongly, downhole temperature often reaches more than 150 DEG C, and therefore, the requirement to the high temperature resistant property of downhole petroleum logger is higher.
Common downhole petroleum logger includes: magnetic compass list, multishot instrument, steering tool, no
Line directional tool, EMI, photograph list, multiple spot gyrolevel, electronic gyroscope inclinometer etc..
Oil well logging instrument is during downhole drill, if running into harder rock or the short-circuit feelings of circuit appearance
Condition, system operating current can increase suddenly, can burn out electronic circuit when serious, affects construction speed.At present conventional method be
System power supply end seals in an electric fuse, and if there is over-current phenomenon avoidance, electric fuse fuses automatically, protects electronic circuit.But this
Kind of electric fuse is only capable of protection once, has blown and has needed to change, and when changing electric fuse, needs to interrupt construction, and by whole string instrument from
Well head is brought up, and wastes time and energy.The operating temperature range of most of on the market resettable fuses is between -40 DEG C to 85 at present
DEG C, also cannot meet and be actually needed.
Utility model content
In order to solve above-mentioned technical problem, provide one kind can be more than or equal to 150 DEG C of work in high temperature environments, possess
Stream protection and the automatic device recovering, this utility model provides a kind of SCM Based oil well logging instrument circuit protection dress
Put, including circuit board, described circuit board is provided with current detection module, single-chip microcomputer and mos switch module, described current detecting
Module is connected with the power supply interface of downhole petroleum logger, for measuring the output of the power supply interface of downhole petroleum logger
Electric current；
Described mos switch module is connected in the power supply output circuit of downhole petroleum logger；
Described single-chip microcomputer is connected with described current detection module and mos switch module respectively, for receiving current detecting mould
The current information of block measurement；Described single-chip microcomputer controls described mos switch module when described electric current is more than default overloading threshold
Cut-off, and control described mos switch module conducting after the scheduled time, receive the electric current letter of current detection module measurement again
Breath, and judge whether the electric current receiving again is less than described overloading threshold, if so, then control described mos switch module conducting, if
No, then control described mos switch module 43 to end.
Further, shell and cover plate are also included, described inside the shell offers the groove for accommodating described circuit board, institute
State circuit board to be arranged in described groove.
Further, the first joint and the second joint are also included, described first joint and the second joint are separately positioned on institute
State the two ends of shell, and described first joint and the second joint are all connected with described circuit board.
Further, also include collar, described collar is arranged on outside described second joint, described collar and described shell
It is flexibly connected.
Further, described current detection module includes the current detecting chip for detecting size of current.
Further, described current detection module also includes current amplifier, and described current amplifier is used for measurement well
The output current of the power supply interface of lower oil well logging instrument is amplified.
Further, described shell is cylinder.
Further, described first joint is three needle adapters, and described second joint is ten needle adapters, and described second joint
It is connected with described collar.
Further, when the operating current of described downhole petroleum logger is 1a-1.5a, described overloading threshold is 3a.
Further, when the operating current of described downhole petroleum logger is 200ma-1a, described overloading threshold is 2a.
Device of the present utility model is provided with current detection module, single-chip microcomputer and mos switch module, by current detecting mould
Block measures the output current of the power supply interface of downhole petroleum logger, receives the electricity of current detection module measurement by single-chip microcomputer
Stream information, and control described mos switch module cut-off when described electric current is more than default overloading threshold, and after the scheduled time
Control described mos switch module conducting, receive the current information of current detection module measurement again, and judge the electricity receiving again
Whether stream is less than described overloading threshold, if so, then controls described mos switch module conducting, if it is not, then controlling described mos switch
Module is ended.Foregoing circuit functional module can in high temperature environments (more than or equal to 150 DEG C) work and possess overcurrent protection and from
Dynamic recovery function.
In addition, this utility model is also provided with shell and two interfaces, circuit board is arranged on inside the shell, makes the steady of device
Qualitative higher, versatility more preferably, is convenient for changing.
By overcurrent protective device of the present utility model, oil well logging instrument, during downhole drill, works in system
When electric current increases suddenly, can disconnecting circuit in time, protect oil well logging instrument, when electric current recovers normal, single-chip microcomputer meeting again
Automatically control mos switch module and recover conducting, make circuit normal power supply it is not necessary to artificially change electric fuse, save manpower thing
While power cost, drastically increase oil well logging efficiency.
Brief description
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art and advantage, below will be right
In embodiment or description of the prior art the accompanying drawing of required use be briefly described it should be apparent that, below describe in attached
Figure is only some embodiments of the present utility model, for those of ordinary skill in the art, is not paying creative work
On the premise of, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the exploded pictorial of the SCM Based oil well logging instrument circuit protection device that this utility model provides
Figure；
Fig. 2 is the structured flowchart of circuit board of the present utility model.
In figure: 1- shell, 2- first joint, 3- second joint, 4- circuit board, 41- current detection module, 42- single-chip microcomputer,
43-mos switch module, 44- current detecting chip, 45- current amplifier, 5- cover plate, 6- collar, 7- groove, 8- downhole petroleum
Logger, 81- power supply interface.
Specific embodiment
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out
Clearly and completely description is it is clear that described embodiment is only a part of embodiment of this utility model rather than whole
Embodiment.Based on the embodiment in this utility model, those of ordinary skill in the art are not making the premise of creative work
Lower obtained every other embodiment, broadly falls into the scope of this utility model protection.
Embodiment one:
Refer to Fig. 1, Fig. 2, this utility model provides a kind of SCM Based oil well logging instrument circuit protection dress
Put, including circuit board 4, described circuit board is provided with current detection module 41, single-chip microcomputer 42 and mos switch module 43, described
Current detection module 41 is connected with the power supply interface 81 of downhole petroleum logger 8, for measuring downhole petroleum logger 8
The output current of power supply interface 81；
Described mos switch module 43 is connected in the power supply output circuit of downhole petroleum logger 8；
Described single-chip microcomputer 42 is connected with described current detection module 41 and mos switch module 43 respectively, for receiving electric current
The current information of detection module 41 measurement；Described single-chip microcomputer 42 controls described when described electric current is more than default overloading threshold
Mos switch module 43 ends, and controls described mos switch module 43 to turn on after the scheduled time, receives current detecting mould again
The current information of block 41 measurement, and judge whether the electric current receiving again is less than described overloading threshold, if so, then control described
Mos switch module 43 turns on, if it is not, then controlling described mos switch module 43 to end.
It should be noted that in the specific application scenarios of this utility model, described single-chip microcomputer 42 is receiving electric current again
The current information of detection module 41 measurement, and judge that the electric current receiving again is higher than described overloading threshold, control described mos switch
It is possible to determine that circuit breaks down after module 43 cut-off, need to overhaul instrument.
Further, also include shell 1 and cover plate 5, offer for accommodating the recessed of described circuit board 4 in described shell 1
Groove 7, described circuit board 4 is arranged in described groove 7.
Further, the first joint 2 and the second joint 3 are also included, described first joint 2 and the second joint 3 are respectively provided with
At the two ends of described shell 1, and described first joint 2 and the second joint 3 are all connected with described circuit board 4.
Further, also include collar 6, described collar 6 is arranged on outside described second joint 3, described collar 6 with described
Shell 1 is flexibly connected.
Further, described current detection module 41 includes the current detecting chip 44 for detecting size of current.
Further, described current detection module 41 also includes current amplifier 45, and it is right that described current amplifier 45 is used for
The output current of the power supply interface 81 of measurement downhole petroleum logger 8 is amplified.
Further, described shell 1 is cylinder.
Further, described first joint 2 is three needle adapters, and described second joint 3 is ten needle adapters, and described second connects
3 are connected with described collar 6.
Further, when the operating current of described downhole petroleum logger 8 is 1a-1.5a, described overloading threshold is 3a.
Device of the present utility model is provided with current detection module, single-chip microcomputer and mos switch module, by current detecting mould
Block measures the output current of the power supply interface of downhole petroleum logger, receives the electricity of current detection module measurement by single-chip microcomputer
Stream information, and control described mos switch module cut-off when described electric current is more than default overloading threshold, and after the scheduled time
Control described mos switch module conducting, receive the current information of current detection module measurement again, and judge the electricity receiving again
Whether stream is less than described overloading threshold, if so, then controls described mos switch module conducting, if it is not, then controlling described mos switch
Module is ended.Foregoing circuit functional module can in high temperature environments (more than or equal to 150 DEG C) work and possess overcurrent protection and from
Dynamic recovery function.
In addition, this utility model is also provided with shell and two interfaces, circuit board is arranged on inside the shell, makes the steady of device
Qualitative higher, versatility more preferably, is convenient for changing.
By overcurrent protective device of the present utility model, oil well logging instrument, during downhole drill, works in system
When electric current increases suddenly, can disconnecting circuit in time, protect oil well logging instrument, when electric current recovers normal, single-chip microcomputer meeting again
Automatically control mos switch module and recover conducting, make circuit normal power supply it is not necessary to artificially change electric fuse, save manpower thing
While power cost, drastically increase oil well logging efficiency.
Embodiment two:
Refer to Fig. 1, Fig. 2, this utility model provides a kind of SCM Based oil well logging instrument circuit protection dress
Put, including circuit board 4, described circuit board is provided with current detection module 41, single-chip microcomputer 42 and mos switch module 43, described
Current detection module 41 is connected with the power supply interface 81 of downhole petroleum logger 8, for measuring downhole petroleum logger 8
The output current of power supply interface 81；
Described mos switch module 43 is connected in the power supply output circuit of downhole petroleum logger 8；
Described single-chip microcomputer 42 is connected with described current detection module 41 and mos switch module 43 respectively, for receiving electric current
The current information of detection module 41 measurement；Described single-chip microcomputer 42 controls described when described electric current is more than default overloading threshold
Mos switch module 43 ends, and controls described mos switch module 43 to turn on after the scheduled time, receives current detecting mould again
The current information of block 41 measurement, and judge whether the electric current receiving again is less than described overloading threshold, if so, then control described
Mos switch module 43 turns on, if it is not, then controlling described mos switch module 43 to end.
It should be noted that in the specific application scenarios of this utility model, described single-chip microcomputer 42 after the scheduled time again
The secondary current information receiving current detection module 41 measurement, and judge that the electric current receiving again is higher than described overloading threshold, control
After the cut-off of described mos switch module 43, whether the electric current that can continue after the scheduled time in testing circuit again recovers normal,
When electric current until detecting is less than overloading threshold, mos switch module 43 is controlled to turn on, so that whole circuit turn-on.
Further, also include shell 1 and cover plate 5, offer for accommodating the recessed of described circuit board 4 in described shell 1
Groove 7, described circuit board 4 is arranged in described groove 7.
Further, the first joint 2 and the second joint 3 are also included, described first joint 2 and the second joint 3 are respectively provided with
At the two ends of described shell 1, and described first joint 2 and the second joint 3 are all connected with described circuit board 4.
Further, also include collar 6, described collar 6 is arranged on outside described second joint 3, described collar 6 with described
Shell 1 is flexibly connected.
Further, described current detection module 41 includes the current detecting chip 44 for detecting size of current.
Further, described current detection module 41 also includes current amplifier 45, and it is right that described current amplifier 45 is used for
The output current of the power supply interface 81 of measurement downhole petroleum logger 8 is amplified.
Further, described shell 1 is cylinder.
Further, described first joint 2 is three needle adapters, and described second joint 3 is ten needle adapters, and described second connects
3 are connected with described collar 6.
Further, when the operating current of described downhole petroleum logger 8 is 200ma-1a, described overloading threshold is
2a.
Device of the present utility model is provided with current detection module, single-chip microcomputer and mos switch module, by current detecting mould
Block measures the output current of the power supply interface of downhole petroleum logger, receives the electricity of current detection module measurement by single-chip microcomputer
Stream information, and control described mos switch module cut-off when described electric current is more than default overloading threshold, and after the scheduled time
Control described mos switch module conducting, receive the current information of current detection module measurement again, and judge the electricity receiving again
Whether stream is less than described overloading threshold, if so, then controls described mos switch module conducting, if it is not, then controlling described mos switch
Module is ended.Foregoing circuit functional module can in high temperature environments (more than or equal to 150 DEG C) work and possess overcurrent protection and from
Dynamic recovery function.
In addition, this utility model is also provided with shell and two interfaces, circuit board is arranged on inside the shell, makes the steady of device
Qualitative higher, versatility more preferably, is convenient for changing.
By overcurrent protective device of the present utility model, oil well logging instrument, during downhole drill, works in system
When electric current increases suddenly, can disconnecting circuit in time, protect oil well logging instrument, when electric current recovers normal, single-chip microcomputer meeting again
Automatically control mos switch module and recover conducting, make circuit normal power supply it is not necessary to artificially change electric fuse, save manpower thing
While power cost, drastically increase oil well logging efficiency.
The above is preferred implementation of the present utility model it is noted that ordinary skill for the art
For personnel, on the premise of without departing from this utility model principle, some improvements and modifications can also be made, these improve and moisten
Decorations are also considered as protection domain of the present utility model.
Claims (8)
1. SCM Based oil well logging instrument circuit protection device is it is characterised in that include circuit board (4), described circuit
Current detection module (41), single-chip microcomputer (42) and mos switch module (43) be provided with plate, described current detection module (41) with
The power supply interface (81) of downhole petroleum logger (8) connects；
Described mos switch module (43) is connected in the power supply output circuit of downhole petroleum logger (8)；
Described single-chip microcomputer (42) is connected with described current detection module (41) and mos switch module (43) respectively.
2. SCM Based oil well logging instrument circuit protection device according to claim 1 is it is characterised in that also wrap
Include shell (1) and cover plate (5), in described shell (1), offer the groove (7) for accommodating described circuit board (4), described circuit
Plate (4) is arranged in described groove (7).
3. SCM Based oil well logging instrument circuit protection device according to claim 2 is it is characterised in that also wrap
Include the first joint (2) and the second joint (3), described first joint (2) and the second joint (3) are separately positioned on described shell (1)
Two ends, and described first joint (2) and the second joint (3) be all connected with described circuit board (4).
4. SCM Based oil well logging instrument circuit protection device according to claim 3 is it is characterised in that also wrap
Include collar (6), described collar (6) is arranged on outside described second joint (3), described collar (6) is with described shell (1) activity even
Connect.
5. SCM Based oil well logging instrument circuit protection device according to claim 3 is it is characterised in that described
Current detection module (41) includes the current detecting chip (44) for detecting size of current.
6. SCM Based oil well logging instrument circuit protection device according to claim 5 is it is characterised in that described
Current detection module (41) also includes current amplifier (45).
7. SCM Based oil well logging instrument circuit protection device according to claim 2 is it is characterised in that described
Shell (1) is cylinder.
8. SCM Based oil well logging instrument circuit protection device according to claim 4 is it is characterised in that described
First joint (2) is three needle adapters, and described second joint (3) is ten needle adapters, and described second joint (3) and described collar
(6) connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620783675.2U CN205901253U (en) | 2016-07-25 | 2016-07-25 | Oil logging instrument circuit protection device based on singlechip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620783675.2U CN205901253U (en) | 2016-07-25 | 2016-07-25 | Oil logging instrument circuit protection device based on singlechip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205901253U true CN205901253U (en) | 2017-01-18 |
Family
ID=57784885
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620783675.2U Expired - Fee Related CN205901253U (en) | 2016-07-25 | 2016-07-25 | Oil logging instrument circuit protection device based on singlechip |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205901253U (en) |
-
2016
- 2016-07-25 CN CN201620783675.2U patent/CN205901253U/en not_active Expired - Fee Related
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170118 Termination date: 20210725 |