CN204140054U - A kind of array acoustic transducer - Google Patents
A kind of array acoustic transducer Download PDFInfo
- Publication number
- CN204140054U CN204140054U CN201420388422.6U CN201420388422U CN204140054U CN 204140054 U CN204140054 U CN 204140054U CN 201420388422 U CN201420388422 U CN 201420388422U CN 204140054 U CN204140054 U CN 204140054U
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- transducer
- installing rack
- array
- receiving
- array acoustic
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Abstract
The utility model relates to a kind of array acoustic transducer, comprise: transducer installing rack, housing, seal and receiving transducer assembly, described housing is coated on outside transducer installing rack, described seal is compacted between housing and transducer installing rack, thus the chamber of described enclosure interior is sealed by elastic deformation, described receiving transducer assembly is mounted to described transducer installing rack in the form of an array, and described receiving transducer assembly comprises: for receiving sound wave and sound wave being converted to the transducer wafer of the signal of telecommunication; And the coating to be made up of macromolecular material, described coating is coated described transducer wafer fully.
Description
Technical field
The utility model relates to acoustic logging, espespecially a kind of array acoustic transducer for logger.
Background technology
When sound wave is propagated in different medium, the acoustic characteristics such as the change of speed, amplitude and frequency are not identical yet.Acoustic logging is exactly utilize these acoustic properties of rock to study the geological section of drilling well, judges a kind of logging method of cementing quality.Array acoustic instrument can measure compressional wave, shear wave, the Stoneley wave on stratum, just the Mintrop wave propagation time of these ripples can be extracted by certain mathematic calculation, calculate Dispersion, thus analyze the acoustic characteristic of rock, the parameters such as stratum elasticity mechanics parameter, mechanical property parameter, mud parameter, in-place permeability can be calculated in conjunction with curves such as density, shale content, degree of porosity again, and anisotropy size and the orientation of anisotropic formation can be calculated.Due to these features, current array sonic log is widely used.Especially solving complicated geological problem, being oilfield stimulation, synergy service aspect, serving very important effect.
Acoustic logging instrument mainly comprises transmitting transducer, receiving transducer, acoustic isolater and electrical part and to grade parts.Electric part is used to provide the signal of telecommunication; Trigger transmitting transducer and launch sound wave; Receiving transducer receives the acoustic signals returned, and converts thereof into the signal of telecommunication.Conventional electroacoustic transducer is mainly piezoelectric transducer.Piezoelectric transducer make use of the piezo-electric effect of some monocrystal material and the electrostriction effect of some polycrystalline material.Under the effect of the signal of telecommunication, transmitting transducer produces acoustic vibration with the back wash effect of its piezo-electric effect, launches sound wave; Under the effect of acoustic signals, receiving transducer receives sound wave with the positive-effect of its piezo-electric effect, forms the signal of telecommunication, and the signal of telecommunication after amplifying is delivered to ground instrument record through cable.Because the sound wave after reflection often presents variform from multiple directions, therefore need the multiple receiving transducer towards all directions, these receiving transducers are combined as array acoustic transducer.Acoustic isolater isolation transmitting transducer and receiving transducer, increases the order of reflection of sound wave by prolongation sound wave trajectory, and the sound wave launched to prevent transmitting transducer reaches through instrument component the interference that receiving transducer causes formation to measure.
For receiving stable acoustic signals; array acoustic transducer is immersed among fluid; and because the wafer fragility used in transducer is large, intensity is low; therefore existing array acoustic transducer uses the coated receiving transducer of rubbery human body and arranges rubber sheet gasket at wafer periphery, in order to receiving transducer and on wafer protect.Meanwhile, these rubber components also play abatement acoustic signals and propagate between receiving transducer, namely improve the effect of the acoustic resistance between receiving transducer.
Fig. 1 shows the phantom of the array acoustic transducer assemblies of prior art.As shown in Figure 1, existing receiving transducer assembly comprises transducer installing rack 11, transducer wafer 12, rubber sheet gasket 13, rubber bandage 14 and rubbery human body 15.On the one hand the environment of rubbery human body 15 pairs of filled with oil seals, and the elasticity of leather bag can the pressure of absorbing external on the other hand, thus protect the transducer of its inside.Fig. 2 shows the phantom drawing of one group of receiving transducer in the array acoustic transducer of prior art.As more clearly shown in Fig. 2, producing internal stress to make transducer wafer 12 when reducing installation and preventing from being impacted and causing damage when using, in prior art, mainly utilizing rubber sheet gasket 13 and rubber bandage 14 to carry out damping and buffering.The soffit of transducer wafer 12 reclines on rubber sheet gasket 13, and the upper surface of transducer wafer 12 is pushed down by rubber bandage 14, and the size of this pressure regulates by changing different flexible rubber bandage.The upper and lower surface of such transducer wafer 12 is all near having flexible rubber parts; ensure that its not with hard metal pieces into contact; simultaneously because rubber parts is very little to the pressure of transducer wafer; wafer can not be made to produce internal stress; thus not only secure wafer, also protection and shockproof effect are served to wafer.
But because high temperature resistant, the erosion-resisting performance of rubber is poor compared with other metal parts, it is the weak link of whole array energy transducer always.When running into high temperature and hydrogen sulfide, often running into the situation of rubbery human body breakage, directly affecting the use of instrument.Although there is various specific rubber nominal can meet high temperature and decay resistance both at home and abroad, price is all very expensive.
Summary of the invention
In order to solve the problems of the technologies described above, the purpose of this utility model is to provide a kind of array acoustic transducer, can eliminate the use of rubber part, with the use tolerance of lifting means, application life and reliability.
In order to reach the utility model object, the utility model discloses a kind of array acoustic transducer.This array acoustic transducer comprises: transducer installing rack, housing, seal and receiving transducer assembly, described housing is coated on outside transducer installing rack, described seal is compacted between housing and transducer installing rack, thus the chamber of described enclosure interior is sealed by elastic deformation, described receiving transducer assembly is mounted to described transducer installing rack in the form of an array.Described receiving transducer assembly comprises: for receiving sound wave and sound wave being converted to the transducer wafer of the signal of telecommunication; And the coating to be made up of macromolecular material, described coating is coated described transducer wafer fully.
In numerous embodiments, described coating comprises the connection features for described receiving transducer assembly being connected to described transducer installing rack, and described connection features is formed on coating.
In numerous embodiments, described macromolecular material is polyether-ether-ketone.
In numerous embodiments, described connection features is multiple through hole.In numerous embodiments, described connection features is multiple contact pin.
In numerous embodiments, described multiple receiving transducer assembly comprises different types of transducer.
In numerous embodiments, described array format is: at the circumferencial direction of described transducer installing rack towards four sides arrangement four described receiving transducer assemblies, and the unit that described four receiving transducer assemblies are formed is the array that formed in the axial repeated arrangement of described transducer installing rack.In numerous embodiments, described array comprises eight described unit.
In numerous embodiments, transducer installing rack comprises multiple sound insulation groove.In numerous embodiments, the inner surface of described transducer installing rack and external surface are all formed with described sound insulation groove.
Compared with prior art, the transducer wafer in array acoustic transducer of the present utility model is fully coated by the coating of macromolecular material institute.This structure serves protection and the cushioning effect of rubber sheet gasket of the prior art, rubber bandage and rubbery human body, namely eliminates the use of these rubber parts, and this improves the use tolerance of equipment, application life and reliability greatly.
Accompanying drawing explanation
Fig. 1 is the phantom of the array acoustic transducer of prior art.
Fig. 2 is the phantom drawing of one group of receiving transducer in the array acoustic transducer of prior art.
Fig. 3 is the sectional view of array acoustic transducer of the present utility model.
Fig. 4 is the front view of the transducer installing rack in Fig. 3.
Fig. 5 a is the phantom drawing of the receiving transducer assembly of array acoustic transducer of the present utility model.
Fig. 5 b is the sectional perspective view of the receiving transducer assembly in Fig. 5 a.
Detailed description of the invention
Fig. 3 shows the sectional view of array acoustic transducer of the present utility model.As shown in Figure 3, according to a kind of embodiment of the present utility model, array acoustic transducer 100 comprises transducer installing rack 110, multiple receiving transducer assembly 120, seal 130 and housing (be clear display installing rack structure, eliminate housing in figure).
Fig. 4 is the front view of the transducer installing rack in Fig. 3.Shown in composition graphs 3 and Fig. 4, transducer installing rack 110 comprises mounting groove 111, for installing receiving transducer assembly 120.In general, the shape of mounting groove 111 is designed to adapt with the shape of receiving transducer assembly 120.For preventing sound wave from propagating in instrument and disturbing logging effect, transducer installing rack 110 also comprises multiple sound insulation groove 112.Sound insulation groove 112 is arranged on the surfaces externally and internally of transducer installing rack 110, this set makes the surface of transducer installing rack 110 all not exceed the flat surface of certain length, thus increase sound wave instrument internal propagation path, increase order of reflection, and then decrease signal disturbing.Transducer installing rack 110 also comprises seal groove 113, for installing seal 130.
The housing of array acoustic transducer 100 is used conventional fastening means to be assemblied in transducer installing rack 110 outside, and by seal 130 by the cavity seal of inside.Seal 130 is arranged in seal groove 113.In the present embodiment, seal 130 is O-ring seals.In other embodiments, seal 130 can for being suitable for any seal of the shape of transducer installing rack 110, size and working environment.Due to the coat structure that hereafter will describe, transducer wafer is no longer directly exposed under extraneous pressure, and therefore housing of the present utility model can be made up of metal material, and the structure using rubbery human body to carry out equilibrium pressure in this and prior art has a great difference.The omission of rubbery human body is significantly improved to the reliability of equipment.
As can be seen from Figure 3, multiple receiving transducer assembly 120 is connected to transducer installing rack 110 in the mode of array, for receiving the acoustic signals of reflection.Multiple receiving transducer assembly 120 can be different types of receiving transducer, and the advantage done like this is to receive different waveforms, thus is familiar with and evaluates each attribute of bad ground from different perspectives.According to a kind of embodiment of the present utility model, array acoustic transducer 100 can form array in the following manner: have four receiving transducer assemblies 120 towards four sides arrangement (namely substantially at 90 degrees to each other angle) at the circumferencial direction of transducer installing rack 110, the unit that these four receiving transducer assemblies 120 are formed transducer installing rack 110 axial repeated arrangement and form array.According to a kind of embodiment of the present utility model, array acoustic transducer 100 can comprise eight these unit, i.e. totally three ten two receiving transducer assemblies 120.Wherein, the interval between each unit can be consistent.According to other embodiments of the present utility model, array acoustic transducer 100 can comprise with more and less receiving transducer assembly 120 of arbitrary form arrangement.
With reference to the phantom drawing that figure 5a and Fig. 5 b, Fig. 5 a is the receiving transducer assembly of array acoustic transducer of the present utility model, Fig. 5 b is the sectional perspective view of the receiving transducer assembly in Fig. 5 a.As shown in figure 5 a and 5b, transducer wafer 121 and coating 122 is comprised according to receiving transducer assembly 120 of the present utility model.
Transducer wafer 121 is for Received signal strength and signal is converted to the other forms of abilities such as electric energy, and it can be piezoelectric, includes but not limited to natural quartz (SiO
2) wafer, artificial single crystal material is as lithium sulfate (Li
2sO
4), lithium niobate (LiNbO
3) and piezoelectric ceramics, as lead zirconate titanate (PZT), barium titanate (BaTiO
3), lead niobate (PbNb
2o
3) etc.
Coating 122 is coated transducer wafer 121 fully, and defines connection features 122.Coating 122 can be the macromolecule polymer material be applicable to arbitrarily, is preferably polyether-ether-ketone (PEEK).Polyether-ether-ketone (PEEK) has the physical and chemical performances such as high temperature resistant, chemical resistance corrosion, and has good entrant sound.Like this, coating 122 reduces the risk that transducer wafer 121 is damaged in the environment for use of HTHP, ensure that its functional performance simultaneously.
In a preferred embodiment, coating 122 comprises connection features 1221, to be connected in the mounting groove 111 of transducer installing rack 110 by receiving transducer assembly 120.Connection features 1221 is integrally formed in coating 122 in the manufacture process of coating 122, this considerably reduces the number of components of receiving transducer assembly, and simplifies manufacture and installation process.Connection features 1221 can be multiple through hole, the securing member fixed reception transducer assemblies 120 such as screw easy to use.These through holes extend along the thickness direction being contained in the transducer wafer 121 in coating 122, and are positioned at position not overlapping with transducer wafer 121 on coating 122.Connection features can also be the connection features that screwed hole, contact pin etc. are applicable to arbitrarily.In the embodiment using contact pin as connection features 1221, the mounting groove 111 of transducer installing rack 110 comprises corresponding pin holes.
By transducer wafer being coated on completely the structure in macromolecule coating, instead of rubber sheet gasket of the prior art, rubber bandage and rubbery human body, array acoustic transducer 100 of the present utility model completely eliminates the use of rubber part, and can realize better result of use, this improves the use tolerance of equipment, application life and reliability greatly.
Although mention the utility model above to may be used for petroleum well logging technology, application of the present utility model also comprises naval vessels, submarine, marine charting, Ultrasonic NDT etc.The structure of this manual and example are exemplary, and scope of the present utility model is only defined by the claims.
Claims (10)
1. an array acoustic transducer, it is characterized in that, comprise: transducer installing rack, housing, seal and receiving transducer assembly, described housing is coated on outside transducer installing rack, described seal is compacted between housing and transducer installing rack, thus the chamber of described enclosure interior is sealed by elastic deformation, described receiving transducer assembly is mounted to described transducer installing rack in the form of an array, and described receiving transducer assembly comprises:
For receiving sound wave and sound wave being converted to the transducer wafer of the signal of telecommunication; And
The coating be made up of macromolecular material, described coating is coated described transducer wafer fully.
2. array acoustic transducer as claimed in claim 1, is characterized in that: described coating comprises the connection features for described receiving transducer assembly being connected to described transducer installing rack, and described connection features is formed on coating.
3. array acoustic transducer as claimed in claim 1, is characterized in that: described macromolecular material is polyether-ether-ketone.
4. array acoustic transducer as claimed in claim 2, is characterized in that: described connection features is multiple through hole.
5. array acoustic transducer as claimed in claim 2, is characterized in that: described connection features is multiple contact pin.
6. array acoustic transducer as claimed in claim 1, is characterized in that: described multiple receiving transducer assembly comprises different types of transducer.
7. array acoustic transducer as claimed in claim 1, it is characterized in that: described array format is: at the circumferencial direction of described transducer installing rack towards four sides arrangement four described receiving transducer assemblies, the unit that described four receiving transducer assemblies are formed is the array that formed in the axial repeated arrangement of described transducer installing rack.
8. array acoustic transducer as claimed in claim 7, is characterized in that: it comprises eight described unit.
9. array acoustic transducer as claimed in claim 1, is characterized in that: transducer installing rack comprises multiple sound insulation groove.
10. array acoustic transducer as claimed in claim 9, is characterized in that: the inner surface of described transducer installing rack and external surface are all formed with described sound insulation groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420388422.6U CN204140054U (en) | 2014-07-14 | 2014-07-14 | A kind of array acoustic transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420388422.6U CN204140054U (en) | 2014-07-14 | 2014-07-14 | A kind of array acoustic transducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204140054U true CN204140054U (en) | 2015-02-04 |
Family
ID=52416747
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420388422.6U Expired - Fee Related CN204140054U (en) | 2014-07-14 | 2014-07-14 | A kind of array acoustic transducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204140054U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105888655A (en) * | 2016-05-05 | 2016-08-24 | 中国海洋石油总公司 | While-drilling acoustic wave insulating structure |
| CN111742243A (en) * | 2018-02-08 | 2020-10-02 | 斯伦贝谢技术有限公司 | Ultrasonic transducer for measuring formation velocity |
-
2014
- 2014-07-14 CN CN201420388422.6U patent/CN204140054U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105888655A (en) * | 2016-05-05 | 2016-08-24 | 中国海洋石油总公司 | While-drilling acoustic wave insulating structure |
| CN111742243A (en) * | 2018-02-08 | 2020-10-02 | 斯伦贝谢技术有限公司 | Ultrasonic transducer for measuring formation velocity |
| CN111742243B (en) * | 2018-02-08 | 2024-06-04 | 斯伦贝谢技术有限公司 | Ultrasonic transducer for measuring formation velocity |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100010 Chaoyangmen North Street, Dongcheng District, Dongcheng District, Beijing Co-patentee after: CHINA OILFIELD SERVICES Ltd. Patentee after: CHINA NATIONAL OFFSHORE OIL Corp. Address before: 100010 Chaoyangmen North Street, Dongcheng District, Dongcheng District, Beijing Co-patentee before: CHINA OILFIELD SERVICES Ltd. Patentee before: CHINA NATIONAL OFFSHORE OIL Corp. |
|
| 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: 20150204 |