CN202307399U - Workable precise ceramic pipe-shaped coil insulator - Google Patents
Workable precise ceramic pipe-shaped coil insulator Download PDFInfo
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- CN202307399U CN202307399U CN 201120369439 CN201120369439U CN202307399U CN 202307399 U CN202307399 U CN 202307399U CN 201120369439 CN201120369439 CN 201120369439 CN 201120369439 U CN201120369439 U CN 201120369439U CN 202307399 U CN202307399 U CN 202307399U
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Abstract
The utility model relates to a workable precise ceramic pipe-shaped coil insulator. More specifically, the utility model provides a workable precise ceramic pipe-shaped coil insulator used for an induction coil of a logger. Circumferentially extending grooves at intervals are formed on the external surface of the insulator through turning. The insulator satisfies the requirements for low thermal expansion coefficient and nonmagnetic insulation, and is easy to process. The production cost of the insulator is half that of an alumina ceramic or silicon nitride ceramic product.
Description
Technical field
The utility model relates to a kind of coil insulator, the accurate tubular coil insulator of processable ceramic of the array induction coil that relates more specifically to be used in the oil well logging instrument to be shaped.
Background technology
Array induction logging tool is on the basis of common induction instrument aratus, to grow up, and this instrument has certain radially detectivity.Instrument adopts the coil array of a series of different coil spacings that same stratum is measured, and focuses on through hardware or software then and handles the formation conductivity that obtains different radials depth of investigetion, thereby discern oil-gas Layer effectively.The array induction instrument at first sends electromagnetic field to the stratum, receive by each group pattern coil then, the signal that receives after downhole instrument is handled the spread of the rumours to ground instrument.The key position of the coil array array of whole instrument is that subarray is formed by the three-winding of seven single-sided arrangement, and is operated under a plurality of frequency modes.
The precision of coil array plays a decisive role to certainty of measurement.In the process of design, need to form rational coil array configuration according to the existing processes ability level.Common structural is to use lead to be wound on certain insulating body, thereby and on this matrix cut be shaped some structure limit the space geometry position of coil.Thereby the machining accuracy of this insulator becomes key technology.Insulating material commonly used has high temperature resistant glass fibre reinforced plastic; Shortcoming is that the thermal coefficient of expansion of fiberglass is bigger, and the measuring-signal of coil can occurrence temperature drift about when temperature raises, if drift surpasses tolerance band; Need pull down coil member coiling again, recalibrate instrument.Because the array induction coil is more, the dismounting coil has inconvenience more.And, because high temperature resistant glass fibre reinforced plastic adopts high-temperature resin and glass cloth winding process to realize that belong to composite material, the accuracy class of cut is lower, can not satisfy the required precision of array induction coil array as coil insulator more.
In order to make insulator obtain higher cut precision and higher thermal stability, industry has been introduced the engineering structure pottery as coil insulator.Ceramic material commonly used is generally aluminium oxide ceramics and silicon nitride ceramics, and high temperature sintering is shaped to hollow cylinder, utilizes the little characteristic with no magnetic insulation of its thermal coefficient of expansion.But the engineering structure pottery has hard crisp characteristic, generally adopts grinding, and difficulty of processing is big, and working (machining) efficiency is low, and processing cost is high.Particularly the geomery of fixed array induction coil recesses is many 1/10th millimeters magnitudes, and position dimension is the millimeter magnitude, and mostly its tolerance is 20 micron dimensions, and repeats in a large number to occur, and method for grinding has limited the version and the production efficiency of insulator.Therefore, the cost efficiency of the process of grinding shaping array induction coil insulator is lower.
The utility model content
The purpose of the utility model is to realize a kind of array induction coil insulator of version; Thereby satisfy the little and no magnetic insulation requirement of thermal coefficient of expansion; Make the difficulty of processing of insulator reduce simultaneously, production cost and time ratio adopt the situation of aluminium oxide ceramics or silicon nitride ceramics significantly to reduce.
According to the one side of the utility model, a kind of processable ceramic tubular coil insulator that is used for the induction coil of logger is provided, wherein the groove of turning formation tool circumferential extension at regular intervals on the outer surface of said insulator.Preferably, the surface distributed of insulator has two groups of grooves, thereby constitutes the double reception coil array.
Preferably, the endoporus of said insulator cooperates the formation face of cylinder, two places with elastic part.
Preferably, the both sides of said endoporus are rounded off.
Preferably, on the inner surface of said insulator, pin is installed.
Preferably, said pin is the open circles pin.
Preferably, said groove is a V-shaped groove.
Preferably, on the outer surface of said insulator, be provided with axially extended groove.
Preferably, on the axially extended groove of said insulator, pressing plate is housed and fixes the connecting line between the double reception coil array.
Preferably, said insulator has the matrix of being processed by processable ceramic.
Description of drawings
Through the detailed description below in conjunction with accompanying drawing, these of the utility model will become clearer with other purpose and advantage, in the accompanying drawing:
Fig. 1 is the processable ceramic tubular coil insulator of the utility model and the schematic perspective view of associated components thereof.
Fig. 2 be the utility model processable ceramic tubular coil insulator and associated components thereof dissect the assembling sketch map.
Fig. 3 is the sketch map of the V-type groove on the processable ceramic tubular coil insulator of the utility model.
Embodiment
Through exemplary mode the utility model is done further detailed description below in conjunction with accompanying drawing and specific embodiment.
As shown in Figure 1, the accurate tubular coil insulator 4 of the utility model has adopted processable ceramic as raw material.Processable ceramic this as devitrified glass ceramics, be to be the mica glass ceramic of principal crystalline phase with the synthetic mica, be a kind of can turning the ceramic material of processing, satisfy the electromagnetic performance requirement of array induction coil insulator simultaneously.The machining accuracy grade of said processable ceramic is the IT7 level, can satisfy the accuracy class requirement of insulator.Preferably, said insulator has the matrix of being processed by processable ceramic.
As shown in Figure 1, coil insulator 4 is a tubular structure, and this insulator has endoporus, and said endoporus is a through hole.Wire casing 6 is equipped with in insulator inside, and the wire casing surface has some axial grooves, is used to imbed the lead that connects with the insulator surface coil.As shown in Figure 2; The wire casing surface has annular O RunddichtringO groove; The O RunddichtringO of elastic material is housed, and insulator cooperates with the O RunddichtringO, and O RunddichtringO compression back forms two place's Short Cylinder Surface and supports; Thereby guarantee the axiality of the wire casing 6 in double reception coil and the insulator, and then guarantee that this double reception coil insulator is with being contained in some other axialities with the spline structure coil insulator on the wire casing 6.As shown in Figure 2, with the both ends of the surface cavetto of insulator endoporus, thereby guarantee the smooth and easy installation of insulator.Said insulator preferably is equipped with the rotation that open circles pin 5 (Fig. 1) limits insulator, when the hole of open circles pin is used to take out shank with being connected of other instruments.
The double reception coil groups is assembly independently.Fig. 3 is the zoomed-in view of insulator surface many places groove.It is that the V-shaped groove of P is used for retraining the position of winding wire in the space that the outer surface turning of insulator is formed with spacing.Conductor cross-section is circular, and the V-type groove can accurately be guaranteed the axial and radial dimension of lead.The thermal coefficient of expansion of lead is higher than pottery, is set with certain force of strain during coiling and makes it have certain elastic deformation, also can be attached in the V-shaped groove during high temperature.The end of lead is wrapped on the coil lead 1, is welded on then on the binding post 1.Connecting line between the two group of received coils is imbedded in the lead-in wire groove of coil insulator 4, uses ceramic screw 2 to be connected on the outer surface of coil insulator 4 with fiberglass pressing plate 3 spacing backs.The lead-out wire of double reception coil groups draws from the two ends of coil insulator 4 in the groove of back through the insulator two ends and the insulator that preassembled connecting line welds on the wire casing 6.
The utility model has been realized a kind of array induction coil insulator of version, satisfies the little and no magnetic insulation requirement of thermal coefficient of expansion, and the difficulty of processing of insulator is little, and production cost is the half the of aluminium oxide ceramics or silicon nitride ceramics product.
Though described the utility model, should be appreciated that under the situation of spirit that does not depart from the utility model and scope those skilled in the art can also expect multiple other modification of the utility model with reference to specific embodiment.
Claims (10)
1. a processable ceramic tubular coil insulator that is used for the induction coil of logger is characterized in that: the groove of turning formation tool circumferential extension at regular intervals on the outer surface of said insulator.
2. insulator according to claim 1 is characterized in that: the endoporus of said insulator cooperates the formation face of cylinder, two places with elastic part.
3. insulator according to claim 2 is characterized in that: the both sides of said endoporus are rounded off.
4. insulator according to claim 1 is characterized in that: on the inner surface of said insulator, pin is installed.
5. insulator according to claim 4 is characterized in that: said pin is the open circles pin.
6. insulator according to claim 1 is characterized in that: said groove is a V-shaped groove.
7. insulator according to claim 1 is characterized in that: on the outer surface of said insulator, be provided with axially extended groove.
8. insulator according to claim 7 is characterized in that: the surface distributed of insulator has two groups of grooves, thereby constitutes the double reception coil array.
9. insulator according to claim 8 is characterized in that: fix the connecting line between the said double reception coil array in that pressing plate is housed on the axially extended groove of said insulator.
10. according to each described insulator in the aforementioned claim, it is characterized in that: said insulator has the matrix of being processed by processable ceramic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120369439 CN202307399U (en) | 2011-09-30 | 2011-09-30 | Workable precise ceramic pipe-shaped coil insulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120369439 CN202307399U (en) | 2011-09-30 | 2011-09-30 | Workable precise ceramic pipe-shaped coil insulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202307399U true CN202307399U (en) | 2012-07-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120369439 Expired - Fee Related CN202307399U (en) | 2011-09-30 | 2011-09-30 | Workable precise ceramic pipe-shaped coil insulator |
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| Country | Link |
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| CN (1) | CN202307399U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103573247A (en) * | 2012-07-20 | 2014-02-12 | 中国石油集团长城钻探工程有限公司 | Parallel planar coil for induction logging and induction logging device |
| CN103696754A (en) * | 2012-09-28 | 2014-04-02 | 中国石油集团长城钻探工程有限公司 | Mandrel assembly for induction logging instrument probe nipple and manufacturing method thereof |
| CN106158167A (en) * | 2015-04-02 | 2016-11-23 | 新德隆特种陶瓷（大连）有限公司 | Insulator |
-
2011
- 2011-09-30 CN CN 201120369439 patent/CN202307399U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103573247A (en) * | 2012-07-20 | 2014-02-12 | 中国石油集团长城钻探工程有限公司 | Parallel planar coil for induction logging and induction logging device |
| CN103573247B (en) * | 2012-07-20 | 2019-05-17 | 中国石油集团长城钻探工程有限公司 | Induction logging parallel plane coil and induction logging equipment |
| CN103696754A (en) * | 2012-09-28 | 2014-04-02 | 中国石油集团长城钻探工程有限公司 | Mandrel assembly for induction logging instrument probe nipple and manufacturing method thereof |
| CN103696754B (en) * | 2012-09-28 | 2018-10-23 | 中国石油集团长城钻探工程有限公司 | Mandrel component and its manufacturing method for induction type logger probe nipple |
| CN106158167A (en) * | 2015-04-02 | 2016-11-23 | 新德隆特种陶瓷（大连）有限公司 | Insulator |
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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: 20120704 Termination date: 20140930 |
|
| EXPY | Termination of patent right or utility model |