CN201935775U - Pressure sensor for oil log wireless transmission - Google Patents
Pressure sensor for oil log wireless transmission Download PDFInfo
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- CN201935775U CN201935775U CN2010206008150U CN201020600815U CN201935775U CN 201935775 U CN201935775 U CN 201935775U CN 2010206008150 U CN2010206008150 U CN 2010206008150U CN 201020600815 U CN201020600815 U CN 201020600815U CN 201935775 U CN201935775 U CN 201935775U
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- pressure sensor
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- magnetic
- magnetic induction
- output line
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- Measuring Fluid Pressure (AREA)
Abstract
The utility model discloses a pressure sensor for oil log wireless transmission, which consists of a shell, a piezoelectric body, a piezoelectric membrane and a signal output line. The piezoelectric body, the piezoelectric membrane and the signal output line are mounted in the shell, the piezoelectric membrane is disposed outside the piezoelectric body, the signal output line is connected to a magnetic induction coil on a magnetic inductor, an output end of the magnetic induction coil is connected with a signal processing chip, the lower side of the piezoelectric body tightly contacts with the piezoelectric membrane, the magnetic inductor is connected to a 6V direct-current power source, and the volume of the pressure sensor is greatly reduced. By the aid of the magnetic inductor, a strengthened magnetic signal is generated after signals are coupled. The strength of the magnetic signal is proportional to that of an electric signal. The sensor realizes low-voltage operation by means of acquiring the magnetic signal, and power consumption of the sensor is reduced. Work voltage of the pressure sensor is 6V, during operation of the pressure sensor, static current of the pressure sensor is 13mA, and dynamic current of the pressure sensor is 24mA. Power consumption is greatly reduced. The 6V non-standard power source can sufficiently meet the requirement on electric power of the pressure sensor.
Description
Technical field
The utility model relates to the sensing probe in the wireless operation of a kind of petroleum engineering well logging, relates in particular to the pressure transducer in the operation of a kind of petroleum engineering well logging wireless transmission.
Background technology
Petroleum engineering well logging technology is the most basic technology in the oil-gas exploration and development activity, is to find hydrocarbon-bearing pool, estimate timely, the most direct means of hydrocarbon-bearing pool, has that the subsurface information of obtaining is timely, various, analysis interpretation characteristics efficiently.At present, utilize pressure transducer that pressure parameter is carried out sample collection in the petroleum engineering well logging technology, when adopting the piezoelectrics pressurized, produce electric potential difference.A voltage signal output is arranged on lead-in wire.Change with pressure, electric potential difference is linear growth.Be about to pressure signal and convert electric signal output to.
General pressure transducer all designs by general-purpose industrial reference power supply 24V now, and the power consumption during work increases.Current drain during work is 50mA.Be that the defective that prior art exists is: one, owing to use 24V industrial standard power supply, cause the sensor overall volume bigger than normal, and need to use numerous inductive probes in petroleum engineering well logging technology, this has just brought inconvenience for the well logging operation.Two, the pressure transducer power consumption of prior art is higher, is not suitable for the requirement that the small and exquisite nonstandard power supply of low-voltage of volume is powered in the operation of well logging wireless transmission.
Summary of the invention
The utility model is at the deficiencies in the prior art, provides a kind of and adopt that the nonstandard power supply of low-voltage is powered, overall volume is small and exquisite, makes things convenient for the pressure transducer of the wireless operation of petroleum engineering well logging.
The utility model is realized by following technical scheme, oil log wireless transmission pressure transducer, by housing and be installed on piezoelectrics in the housing, outer piezoelectric film and the output line of piezoelectrics formed, it is characterized in that, magnetic induction coil on described output line connection magnetic induction body, the output termination signal processing chip of magnetic induction coil, piezoelectrics closely contact down piezoelectric film, and the magnetic induction body connects the 6V direct supply.
The beneficial effects of the utility model are: volume reduces greatly.By the magnetic induction body, after the signal coupling, produce the magnetic signal of an enhancing.The strong and weak proportional relation of the power of magnetic signal and electric signal.Be implemented in sensor by the collection magnetic signal and under low-voltage, work, reduce the power consumption of sensor.Operating voltage 6V of the present utility model, the quiescent current during work are 13mA, and dynamic current is 24mA.Power consumption reduces greatly.The nonstandard power supply of 6V can fully satisfy its electricity needs.
Description of drawings
Fig. 1 is oil log wireless transmission pressure sensor structure synoptic diagram.
Fig. 2 is oil log wireless transmission pressure sensor structure, principle schematic.
Among the figure, 1. housing, 2. magnetic induction body, 3. magnetic induction coil, 4. piezoelectrics, 5. piezoelectric film, 6. output line.
Embodiment
Oil log wireless transmission pressure transducer, form by housing (1) and the piezoelectrics (4), outer piezoelectric film (5) and the output line (6) of piezoelectrics (4) that are installed in the housing (1), magnetic induction coil (3) on described output line (6) connection magnetic induction body (2), the output termination signal processing chip of magnetic induction coil (3), piezoelectrics (4) closely contact down piezoelectric film (5), and the required power supply of magnetic induction body (2) is the nonstandard power supply of 6V.When piezoelectric film (5) is subjected to when the ambient pressure source influences deformation taking place, because pressure membrane (5) closely contacts with piezoelectrics (4), can break inner charge balance behind piezoelectrics (4) pressurized, produce electric potential difference.Show as faint voltage signal by lead-in wire output, pressure is big more, and the electric signal of generation is relatively just strong more, with the linear variation of pressure.When 6V voltage was powered to sensor, the signal on the lead-in wire was very faint.At this moment after by magnetic induction body (2) signal being coupled, produce the magnetic signal of an enhancing.The strong and weak proportional relation of the power of magnetic signal and electric signal.Be implemented in sensor by the collection magnetic signal and under low-voltage, work, reduce the power consumption of sensor.
Claims (1)
1. oil log wireless transmission pressure transducer, by housing and be installed on piezoelectrics in the housing, outer piezoelectric film and the output line of piezoelectrics formed, it is characterized in that, magnetic induction coil on described output line connection magnetic induction body, the output termination signal processing chip of magnetic induction coil, piezoelectrics closely contact down piezoelectric film, and the magnetic induction body connects the 6V direct supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206008150U CN201935775U (en) | 2010-11-11 | 2010-11-11 | Pressure sensor for oil log wireless transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206008150U CN201935775U (en) | 2010-11-11 | 2010-11-11 | Pressure sensor for oil log wireless transmission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201935775U true CN201935775U (en) | 2011-08-17 |
Family
ID=44447293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206008150U Expired - Fee Related CN201935775U (en) | 2010-11-11 | 2010-11-11 | Pressure sensor for oil log wireless transmission |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201935775U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108955996A (en) * | 2018-08-15 | 2018-12-07 | 中国地质大学（武汉） | A kind of piezoelectric type wellbore annulus pressure sensor |
| CN109209348A (en) * | 2018-08-15 | 2019-01-15 | 中国地质大学（武汉） | A kind of wellbore annulus pressure sensor based on variable displacement mechanism |
-
2010
- 2010-11-11 CN CN2010206008150U patent/CN201935775U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108955996A (en) * | 2018-08-15 | 2018-12-07 | 中国地质大学（武汉） | A kind of piezoelectric type wellbore annulus pressure sensor |
| CN109209348A (en) * | 2018-08-15 | 2019-01-15 | 中国地质大学（武汉） | A kind of wellbore annulus pressure sensor based on variable displacement mechanism |
| CN109209348B (en) * | 2018-08-15 | 2020-07-07 | 中国地质大学（武汉） | Shaft annulus pressure sensor based on variable displacement mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: ZU YUANFU ZU JI Free format text: FORMER OWNER: ZU YUANFU Effective date: 20140404 Owner name: BAODING WEIHUA OPTOELECTRONICS CO., LTD. Free format text: FORMER OWNER: BAODING WELL OPTOELECTRONICS CO., LTD. Effective date: 20140404 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20140404 Address after: Baoding City, Hebei province 071000 woodland Street No. 723, science and Technology Industrial Park B block factory 402 Patentee after: Baoding Weihua Electronic Technology Co., Ltd. Patentee after: Zu Yuanfu Patentee after: Zu Ji Address before: Baoding City, Hebei province 071000 woodland Street No. 723, science and Technology Industrial Park B block, 409 factory 402 Patentee before: Baoding Well Optoelectronics Co., Ltd. Patentee before: Zu Yuanfu |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110817 Termination date: 20161111 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |