CN201562516U - Wearproof pulser electric magnet - Google Patents
Wearproof pulser electric magnet Download PDFInfo
- Publication number
- CN201562516U CN201562516U CN2009202141723U CN200920214172U CN201562516U CN 201562516 U CN201562516 U CN 201562516U CN 2009202141723 U CN2009202141723 U CN 2009202141723U CN 200920214172 U CN200920214172 U CN 200920214172U CN 201562516 U CN201562516 U CN 201562516U
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- China
- Prior art keywords
- armature
- coil
- nested
- pulser
- electromagnet
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Abstract
The utility model relates to a wearproof pulser electric magnet. The electric magnet comprises a coil cylinder, a coil, an iron core and an armature, wherein the coil is fixed in the side hole of the coil cylinder, the iron core and the armature are inserted into the coil, and all components are coaxial. The utility model is characterized in that the electric magnet also comprises a nested sleeve, the nested sleeve is fixed in the side hole of the coil cylinder, and the armature penetrates through the nested sleeve and the coil and is absorbed with the iron core. When the armature lies in any position in the design stroke, the radial clearance of the nested sleeve with the armature is smaller than the radial clearance of the coil cylinder with the armature, and the radial clearance of the coil with the armature is smaller than the radial clearance of the coil cylinder with the armature. The utility model has the advantages that the clearance between the nested sleeve and the armature is reduced, the coaxiality of the armature central line with the coil cylinder central hole during work is improved, the magnetic field force at the clearance parts is more uniformly distributed in the periphery, and contact pressure and friction are reduced, so wear losses are reduced.
Description
Technical field
The utility model relates to a kind of pulser electromagnet, and what be specifically related to is a kind of anti abrasive pulser electromagnet.
Background technology
In Process of Oil Well Drilling, often need utilize wireless drilling inclinometers to measure the hole deviation data.Pulse generator wherein is the key instrument that information is sent to ground from the down-hole, and pulse generator generally adopts the solenoid type solenoid actuated, the therefore high performance pulser electromagnet assurance that is the instrument operate as normal.
As shown in Figure 2, Fig. 2 is the structural representation of prior art pulser electromagnet.Prior art pulser electromagnet comprises coil tube 1, is fixed in the coil 3 in coil tube 1 side opening, the iron core 5 in armature 4 and the insertion coil 3.Softer materials such as coil tube 1, armature 4 and iron core 5 general employing electrical pure irons are made.When not switching on, electromagnet armature 4 can move freely in coil tube 1; During energising, armature 4 and iron core 5 adhesives, magnetic circuit closure.But because there are radial clearance in armature 4 and 1 of coil tube, will form powerful magnetic field at gap location, magnetic field force can make armature 4 off-center, contact coil tube 1, and at contact position generation pressure, thereby form the frictional force that armature 4 moves.Frictional force herein will cause pulser work of electromagnet instability, and produce serious wearing and tearing in the contact position, and will be particularly serious under worst hot case.
The utility model content
The purpose of this utility model provides a kind of anti abrasive pulser electromagnet, to reduce the frictional force of armature movement, reduces the wear extent of armature, improves the performance of electromagnet, prolongs the useful life of electromagnet, improves reliability.
In order to achieve the above object, the utility model provides a kind of anti abrasive pulser electromagnet, comprises coil tube, is fixed in the coil in the coil tube side opening, and the iron core in armature and the insertion coil is characterized in, also comprises nested;
In the above-mentioned nested side opening that is fixed in coil tube;
Described armature passes nested and coil and iron core adhesive.
Above-mentioned anti abrasive pulser electromagnet, wherein, coil tube, coil, armature, iron core and nested all coaxial setting.
Above-mentioned anti abrasive pulser electromagnet, wherein, the relative position of iron core and coil is constant.
Above-mentioned anti abrasive pulser electromagnet, wherein, nested and fixed form coil tube is that interference fit is fixed, or glueds joint and fix, or welding is fixing.
Above-mentioned anti abrasive pulser electromagnet, wherein, nested employing non-magnet material is made, and comprises tin bronze, perhaps polytetrafluoroethylene.
Above-mentioned anti abrasive pulser electromagnet, wherein, coil tube, armature and iron core adopt high magnetic conductive metal material to make, and comprise electrical pure iron.
Above-mentioned anti abrasive pulser electromagnet, wherein, armature with nested between dynamic friction factor less than the dynamic friction factor between armature and the coil tube.
Above-mentioned anti abrasive pulser electromagnet, wherein, when armature was in optional position in its stroke, the radial clearance of nested and armature was less than the radial clearance of coil tube and armature, and the radial clearance of coil and armature is less than the radial clearance of coil tube and armature.
The utility model compared with prior art, its advantage is:
1. because the utility model has adopted anti abrasive structure, thereby nested and gap armature residual gap are reduced, armature center line when making work and coil tube centre bore axiality improve, the magnetic field force that helps gap location distributes average on circumference, thereby reduce contact pressure, thereby reduce friction;
2. owing to the material of nested employing high abrasion, low friction factor, help reducing friction, and reduce wear.
Description of drawings
Fig. 1 is the structural representation of a kind of anti abrasive pulser electromagnet that provides of the utility model;
Fig. 2 is the structural representation of prior art pulser electromagnet.
Embodiment
Below in conjunction with Fig. 1, describe a preferred embodiment of the present utility model in detail.
As shown in Figure 1, Fig. 1 is the structural representation of a kind of anti abrasive pulser electromagnet that provides of the utility model.A kind of anti abrasive pulser electromagnet comprises coil tube 1, is fixed in the coil 3 in coil tube 1 side opening, and the iron core 5 in armature 4 and the insertion coil 3 also comprises nested 2.Iron core 5 is constant with the relative position of coil 3, and nested 2 are fixed in the side opening of coil tube 1, nested 2 with the fixed form of coil tube 1 be thread connection, glued joint fixing.When armature was in optional position in its stroke, the radial clearance Δ d1 of nested and armature was less than the radial clearance Δ d2 of coil tube and armature, and the radial clearance Δ d3 of coil and armature is less than the radial clearance Δ d2 of coil tube and armature.Armature 4 passes nested 2 and coil 3 and iron core 5 adhesives.
Nested 2 adopt the tin bronze manufacturing.Coil tube 1, armature 4 adopt electrical pure iron with iron core 3.
Principle of the present utility model is: when electromagnet was not switched on, electromagnet armature 4 can move freely on its axis; During energising, armature 4 and iron core 5 adhesives, magnetic circuit closure.On coil tube, add one nested 2, and nested 2 center bores are less than coil tube 1 center bore, make armature 4 directly not contact with coil tube 1, and only contact with nested 2, because nested 2 is less with the gap of 4 in armature, armature 4 center lines when making work and the raising of coil tube 1 centre bore axiality, the magnetic field force that helps gap location distributes average on circumference, thereby reduce contact pressure, thereby reduce friction.In addition, because the material of nested 2 employing high abrasions, low friction factor helps reducing friction, and reduces wear.
Although content of the present utility model has been done detailed introduction by above preferred embodiment, will be appreciated that above-mentioned description should not be considered to restriction of the present utility model.After those skilled in the art have read foregoing, for multiple modification of the present utility model with to substitute all will be conspicuous.Therefore, protection range of the present utility model should be limited to the appended claims.
Claims (8)
1. an anti abrasive pulser electromagnet comprises coil tube (1), is fixed in the coil (3) in coil tube (1) side opening, and the iron core (5) in armature (4) and the insertion coil (3) is characterized in that, also comprises nested (2);
Described nested (2) are fixed in the side opening of coil tube (1);
Described armature (4) passes nested (2) and coil (3) and iron core (5) adhesive.
2. anti abrasive pulser electromagnet as claimed in claim 1 is characterized in that, described coil tube (1), coil (3), armature (4), iron core (5) and nested (2) all coaxial setting.
3. anti abrasive pulser electromagnet as claimed in claim 1 is characterized in that, described iron core (5) is constant with the relative position of coil (3).
4. anti abrasive pulser electromagnet as claimed in claim 1 is characterized in that, described nested (2) are that interference fit is fixed with the fixed form of coil tube (1), or glued joint and fix, or welding is fixing.
5. anti abrasive pulser electromagnet as claimed in claim 1 is characterized in that, described nested (2) adopt non-magnet material to make, and comprise tin bronze, perhaps polytetrafluoroethylene.
6. anti abrasive pulser electromagnet as claimed in claim 1 is characterized in that, described coil tube (1), armature (4) adopt high magnetic conductive metal material to make with iron core (5), comprise electrical pure iron.
7. anti abrasive pulser electromagnet as claimed in claim 1 is characterized in that, the dynamic friction factor between described armature (4) and nested (2) is less than the dynamic friction factor between armature (4) and the coil tube (1).
8. anti abrasive pulser electromagnet as claimed in claim 1, it is characterized in that, when described armature (4) is in optional position in its stroke, the radial clearance of nested (2) and armature (4) is less than the radial clearance of coil tube (1) with armature (4), and the radial clearance of coil (3) and armature (4) is less than the radial clearance of coil tube (1) with armature (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202141723U CN201562516U (en) | 2009-11-26 | 2009-11-26 | Wearproof pulser electric magnet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202141723U CN201562516U (en) | 2009-11-26 | 2009-11-26 | Wearproof pulser electric magnet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201562516U true CN201562516U (en) | 2010-08-25 |
Family
ID=42627667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202141723U Expired - Fee Related CN201562516U (en) | 2009-11-26 | 2009-11-26 | Wearproof pulser electric magnet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201562516U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102022110A (en) * | 2010-11-26 | 2011-04-20 | 上海神开石油化工装备股份有限公司 | Exciting tension assembly test device for pulser |
-
2009
- 2009-11-26 CN CN2009202141723U patent/CN201562516U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102022110A (en) * | 2010-11-26 | 2011-04-20 | 上海神开石油化工装备股份有限公司 | Exciting tension assembly test device for pulser |
| CN102022110B (en) * | 2010-11-26 | 2013-03-20 | 上海神开石油化工装备股份有限公司 | Exciting tension assembly test device for pulser |
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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: 20100825 Termination date: 20171126 |