CN202926312U - Shield assembly used for logging device connector base - Google Patents
Shield assembly used for logging device connector base Download PDFInfo
- Publication number
- CN202926312U CN202926312U CN 201220516471 CN201220516471U CN202926312U CN 202926312 U CN202926312 U CN 202926312U CN 201220516471 CN201220516471 CN 201220516471 CN 201220516471 U CN201220516471 U CN 201220516471U CN 202926312 U CN202926312 U CN 202926312U
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- China
- Prior art keywords
- cushion block
- shield assembly
- plinth
- described cushion
- screw
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a shield assembly used for a logging device connector base. The shield assembly comprises a connector base (11), a spacer block (12), and a shield cover (14), wherein the spacer block (12) is arranged inside the connector base (11), a settling slot is formed in the spacer block (12), and the shield cover (14) cooperates with the spacer block (12) to seal up the settling slot.
Description
Technical field
The utility model relates to well logging field, more specifically, relates to a kind of shield assembly for the logging instrument plinth.
Background technology
At well logging field, the electronic circuit of logger part is often used the high pressure components and parts such as high-voltage power module.According to Maxwell's Theory of Electromagnetic Field, the electric charge of motion produces magnetic field in the space, and by the law of electromagnetic induction as can be known, peripheral magnetic field changes and can produce potential change in closed circuit, thereby forms induced-current.Hence one can see that, the high-intensity magnetic field that the high pressure components and parts produce can on around other circuit produce larger impact, thereby test result is had considerable influence.
Magnetic screen utilizes the ferromagnetic material of high magnetic permeability to make radome with armoured magnetic field.The principle of magnetic screen can illustrate with the concept of magnetic circuit.As ferromagnetic material being made the cross section closed path, in the magnetic field that forms, most magnetic field concentration are in ferromagnetic circuit.Air in ferromagnetic material and cavity can be analyzed as parallel circuits.Because the magnetic conductivity of ferromagnetic material is than large several thousand times of the magnetic conductivity of air, so the magnetic resistance of the magneto resistive ratio ferromagnetic material of cavity is much bigger, the overwhelming majority of the line of magnetic induction will be passed through in the ferromagnetic material wall, and it is few to pass the magnetic flux of cavity.Like this, the cavity that is shielded by ferromagnetic material just there is no that outward magnetic field sends, thereby reaches the purpose of magnetic shielding.The magnetic conductivity of material is higher, and barrel is thicker, and shield effectiveness just significantly.The ferromagnetic material that cause magnetic conductivity commonly used is high such as soft iron, silicon steel, permalloy are done screen layer, therefore magnetic shielding is named again ferro-magnetic shield.
Plinth is the connector that is applied between logger and multi-pin connector, is thin footpath hollow structure, has the line that runs through that quantity does not wait to pass herein according to the difference of instrument kind and demand.In general logger, if there is no special matching requirements, except crossing the line function, in plinth, most of space is in idle state, is not fully used.
Therefore, a kind of shield assembly for the logging instrument plinth of desired design, independently be positioned in the plinth of far-end producing the device that disturbs, away from the electric wire highway section of instrument, and use the bonding structure to encapsulate, reduce the interference of its generation, simultaneously, can take full advantage of the remaining space in plinth, reduce the quantity of electric wire highway section components and parts, the device that is conducive in electronic circuit is arranged.
The utility model content
According to an aspect of the present utility model, a kind of shield assembly for the logging instrument plinth is provided, it comprises plinth, cushion block, screening cover, described cushion block is positioned at described plinth, it is characterized in that, described cushion block has deep gouge, and described screening cover matches and described deep gouge is closed with described cushion block.
Preferably, described shield assembly also comprises high-pressure modular, and described high-pressure modular is placed in the deep gouge of described cushion block.
Preferably, the shape of cross section of described cushion block is T shape, and the both sides of this T shape have trough, connects trough thereby form between the inwall of described cushion block and described plinth.
Preferably, described cushion block and described plinth are connected to form ground connection.
Preferably, a side of described cushion block has line outlet groove.
Preferably, at least one in described cushion block and described screening cover made by high-permeability material.
Preferably, described cushion block and described screening cover utilize screw and screw and link together.
Preferably, described cushion block and described plinth utilize screw and screw and link together.
Preferably, described cushion block and described high-pressure modular utilize screw and screw and link together.
Preferably, described shield assembly is away from the electric wire highway section of logger.
According to the utility model, can realize the magnetic screen to the high pressure components and parts of the circuit part of logger, reduce the interference to other device of circuit part, also reduced the impact on measurement result simultaneously.In addition, according to the utility model, take full advantage of the remaining space in plinth, make the high pressure components and parts away from circuit part, be conducive to optimize arranging of interior each components and parts of electronic circuit, shorten tool length, and the line that runs through in the docking headstock has carried out operative constraint.
Description of drawings
In the detailed description of the embodiment that only provides by example referring to accompanying drawing, will know further feature, advantage and details.
Fig. 1 is the stereogram for an exemplary embodiment of the shield assembly of logging instrument plinth.
Fig. 2 is the detailed view of the cushion block in the embodiment of Fig. 1.
The specific embodiment
Following description is only exemplary in itself, and is not in order to limit the utility model, its application or purposes.
With reference to figure 1, Fig. 1 is the stereogram for an exemplary embodiment of the shield assembly of logging instrument plinth.In this embodiment, shield assembly can comprise plinth 11, cushion block 12, screening cover 14.Preferably, cushion block 12 and screening cover 14 can adopt high-permeability material to make, and for example the stainless steel of high magnetic permeability, be conducive to better electromagnetic shielding.In addition, shield assembly can also comprise high-pressure modular 13, M3 screw 15, M2.5 screw 16, M4 screw 17.High-pressure modular 13 can be fixed in cushion block 12 by M2.5 screw 16, and screening cover 14 can be arranged on by M3 screw 15 upper surface of cushion block 12, and cushion block 12 can be installed in plinth 11 by M4 screw 17.Cushion block 12 forms closed cavities with screening cover 14.Cushion block 12 can be connected to form ground connection with plinth 11.
With reference to figure 2, Fig. 2 is the detailed view of the cushion block in the embodiment of Fig. 1.In the figure, the cross section of cushion block is T shape, and trough 21 is left in both sides, thereby can form the perforation trough between the inwall of cushion block 12 and plinth 11, and the line that runs through that is used for instrument passes.Have deep gouge 24 in cushion block, can be used for placing high-pressure modular 13, four angles of deep gouge 24 have high-pressure modular and install with screw hole 25.In addition, can also have the shoulder hole of running through 26 in deep gouge 24, be used for connecting cushion block 12 and plinth 11.The upper surface of cushion block has one group of screening cover and installs with screwed hole 23.Preferably, have line outlet groove 22 in a side of cushion block, be used for the cabling of high-pressure modular 13 grades.
Although with reference to exemplary embodiment, the utility model is described, but those skilled in the art are understood that, in the situation that do not break away from scope of the present utility model, also can make various changes and each element in above-described embodiment is replaced with equivalent.Therefore, the utility model is not subject to disclosed specific embodiment, but the utility model will comprise all embodiment that drop in the application's scope.
Claims (10)
1. shield assembly that is used for the logging instrument plinth, comprise plinth (11), cushion block (12), screening cover (14), described cushion block (12) is positioned at described plinth (11), it is characterized in that, described cushion block (12) has deep gouge (24), and described screening cover (14) matches and described deep gouge (24) is closed with described cushion block (12).
2. shield assembly as claimed in claim 1, is characterized in that, described shield assembly also comprises high-pressure modular (13), and described high-pressure modular (13) is placed in the deep gouge (24) of described cushion block (12).
3. shield assembly as claimed in claim 1, it is characterized in that, the shape of cross section of described cushion block (12) is T shape, and the both sides of this T shape have trough (21), connects trough thereby form between the inwall of described cushion block (12) and described plinth (11).
4. shield assembly as claimed in claim 1, is characterized in that, described cushion block (12) is connected to form ground connection with described plinth (11).
5. shield assembly as claimed in claim 1, is characterized in that, a side of described cushion block (12) has line outlet groove (22).
6. shield assembly as claimed in claim 1, is characterized in that, described cushion block (12) and/or described screening cover (14) are made by high-permeability material.
7. shield assembly as claimed in claim 1, is characterized in that, described cushion block (12) and described screening cover (14) utilize screw and screw and link together.
8. shield assembly as claimed in claim 1, is characterized in that, described cushion block (12) and described plinth (11) utilize screw and screw and link together.
9. shield assembly as claimed in claim 2, is characterized in that, described cushion block (12) and described high-pressure modular (13) utilize screw and screw and link together.
10. according to any one of the preceding claims shield assembly, is characterized in that, described shield assembly is away from the electric wire highway section of logger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220516471 CN202926312U (en) | 2012-10-10 | 2012-10-10 | Shield assembly used for logging device connector base |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220516471 CN202926312U (en) | 2012-10-10 | 2012-10-10 | Shield assembly used for logging device connector base |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202926312U true CN202926312U (en) | 2013-05-08 |
Family
ID=48216285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220516471 Expired - Fee Related CN202926312U (en) | 2012-10-10 | 2012-10-10 | Shield assembly used for logging device connector base |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202926312U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103726828A (en) * | 2012-10-10 | 2014-04-16 | 中国石油集团长城钻探工程有限公司 | Shielding assembly for logger connector base |
-
2012
- 2012-10-10 CN CN 201220516471 patent/CN202926312U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103726828A (en) * | 2012-10-10 | 2014-04-16 | 中国石油集团长城钻探工程有限公司 | Shielding assembly for logger connector base |
| CN103726828B (en) * | 2012-10-10 | 2019-02-19 | 中国石油集团长城钻探工程有限公司 | A kind of shield assembly for logging instrument plinth |
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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: 20130508 Termination date: 20141010 |
|
| EXPY | Termination of patent right or utility model |