CN204827230U - Permanent magnetism nipple joint - Google Patents
Permanent magnetism nipple joint Download PDFInfo
- Publication number
- CN204827230U CN204827230U CN201520637093.9U CN201520637093U CN204827230U CN 204827230 U CN204827230 U CN 204827230U CN 201520637093 U CN201520637093 U CN 201520637093U CN 204827230 U CN204827230 U CN 204827230U
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- China
- Prior art keywords
- permanent magnet
- joint
- permanent
- permanent magnetism
- groove
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Abstract
The utility model provides a permanent magnetism nipple joint, it includes the body of cylinder, the one end of body is equipped with the male joint, and the other end is equipped with the female joint, it has the recess of a plurality of notches for rectangular shape to open on the outer wall of body, set a permanent magnet in every recess, the permanent magnet includes permanent magnet body and arch, the shape of permanent magnet body is the cylindricality, and the cross sectional shape of permanent magnet body is oblate, the arch is established on the top end of permanent magnet body, the arch is cylindrical, bellied diameter is less than the thickness of permanent magnet body, when the permanent magnet is set in the recess, have bellied one end outwards. This permanent magnetism nipple joint simple structure, the cost is lower, and inside inlaid permanent magnet itself is difficult to damage moreover.
Description
Technical field:
The utility model relates to underground magnetic navigation technical field, is specifically a kind of for providing the permanent magnetism short joint of continuously magnetic signal in underground magnetic navigation.
Background technology:
Underground magnetic navigation method is that one is used in underground, by a kind of method controlling the direction of motion of drill bit that magnetic field monitoring technology realizes, it can be widely used in coal gas production technique field, mainly be used in and be communicated with between straight well, its method is as follows: first permanent magnetism short joint is arranged on drill bit, again drill bit and inserting tube are put into two mouthfuls of straight wells respectively, and the center making the center of drill bit and inserting tube point-blank, the normal trace of Here it is directed drilling.In the process that drill bit creeps into, permanent magnetism short joint is with bit, launch stable magnetic signal, sensor collects by after the magnetic signal of the transmitting of permanent magnetism short joint, ground computer is given by cable transmission, measuring system in computer utilizes the magnetic signal collected, calculate and determine the position of drill bit in well, if a certain moment drill bit has deflected, then corresponding positional information (is comprised distance, azimuth, hole angle and depart from the direction of normal trace) be transferred to centralizing system, drill bit is made to get back on normal track gradually, final navigation drill bit hits target area, reach the object that two wells are communicated with.
In underground magnetic navigation system, permanent magnetism short joint is for generation of magnetic signal, and the quality of its performance directly determines the distance of magnetic signal propagation and then the ultimate range that the system that determines can be measured.Permanent magnetism short joint of the prior art is embedded with cuboid and cylindrical permanent magnet, and permanent magnet is average and be symmetrically distributed in the both sides of the body of permanent magnetism short joint, and the direction of magnetization of inlaying permanent magnet is mutually vertical with the direction that permanent magnetism short joint advances.Permanent magnet is inlaid into after in body, and its external surface is covered by permanent magnetism body surface.Adopt the permanent magnetism short joint of said structure, its interior permanent magnet is larger with the contact area of body surface, and permanent magnetism short joint weares and teares than comparatively fast in the course of the work, be easy to damage permanent magnet itself, and its permanent magnet inlayed has two types, complicated structure, cost compare is high.
Utility model content:
The technical problem that the utility model solves overcomes existing technological deficiency, provides a kind of structure simple, and the permanent magnet itself that inside is inlayed is not easy to damage, and lower-cost permanent magnetism short joint.
The technical scheme that the utility model provides is: the utility model provides a kind of permanent magnetism short joint, it comprises columnar body, one end of described body is provided with male joint, the other end is provided with female joint, the outer wall of described body has the groove that multiple notch is strip, a permanent magnet is set in described each groove, described permanent magnet comprises permanent magnet body and projection, the shape of described permanent magnet body is cylindricality, the cross sectional shape of permanent magnet body is oblate, described projection is located on the top end face of permanent magnet body, described projection is cylindrical, the diameter of described projection is less than the thickness of permanent magnet body, when described permanent magnet is set in a groove, with projection one end outwardly.
After adopting said structure, the utility model has the following advantages: in the utility model, permanent magnet being designed to cross section is oblate cylinder, through verification experimental verification, its magnetic is larger than columniform permanent magnet magnetic, so can also be provided with a columniform projection on permanent magnet body, when setting in a groove, projection outwardly, permanent magnet is less with the appearance contact area of permanent magnetism short joint, even if the appearance wearing and tearing of permanent magnetism short joint, the impact caused permanent magnet is also smaller, and does not need the appearance of permanent magnetism short joint to close, structure is simple, and cost is lower.
Described male joint is the external thread section be located on body, and described female joint is the internal thread segment being located at body interior.This male joint is adopted to be connected with female joint more firm.Be specially adapted to the drill bit that rotary speed is very fast, vibrations are more violent.
Described groove has 12.Groove has 12, and permanent magnet also has 12, is embedded in respectively in these 12 grooves.Structure is simple, and effect is better.
Accompanying drawing illustrates:
Accompanying drawing 1 is structural representation of the present utility model;
The structural representation of accompanying drawing 2 permanent magnet;
Accompanying drawing 3 is the schematic cross-section of permanent magnet body.
As shown in the figure: 1, body, 2, male joint, 3, female joint, 4, groove, 5, permanent magnet, 5.1, permanent magnet body, 5.2, protruding.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is elaborated:
As Fig. 1, Fig. 2, shown in Fig. 3: the technical scheme that the utility model provides is: the utility model provides a kind of permanent magnetism short joint, it comprises columnar body 1, one end of described body 1 is provided with male joint 2, the other end is provided with female joint 3, the outer wall of described body 1 has the groove 4 that multiple notch is strip, a permanent magnet 5 is set in described each groove 4, described permanent magnet 5 comprises permanent magnet body 5.1 and protruding 5.2, the shape of described permanent magnet body 5.1 is cylindricality, the cross sectional shape of permanent magnet body 5.1 is oblate, described protruding 5.2 are located on the top end face of permanent magnet body 5.1, described protruding 5.2 is cylindrical, the described diameter of protruding 5.2 is less than the thickness of permanent magnet body 5.1, when described permanent magnet 5 is embedded in groove 4, one end with protruding 5.2 outwardly.The shape of permanent magnetism short joint body is cylindrical shape, is the shape of pipe, and its inner hollow, object is for can pass through drilling fluid from intermediate gaps.The cross sectional shape of described permanent magnet body 5.1 is oblate, and described oblateness refers to that middle is rectangle, and two ends are the shape of semicircle composition.
After adopting said structure, the utility model has the following advantages: in the utility model, permanent magnet being designed to cross section is oblate cylinder, through verification experimental verification, its magnetic is larger than columniform permanent magnet magnetic, so can also be provided with a columniform projection on permanent magnet body, when setting in a groove, projection outwardly, permanent magnet is less with the appearance contact area of permanent magnetism short joint, even if the appearance wearing and tearing of permanent magnetism short joint, the impact caused permanent magnet is also smaller, and does not need the appearance of permanent magnetism short joint to close, structure is simple, and cost is lower.
Described male joint 2 is for being located at the external thread section on body 1, and described female joint 3 is for being located at the internal thread segment of body 1 inside.This male joint is adopted to be connected with female joint more firm.Be specially adapted to the more violent drill bit that moves.
Described groove 4 has 12.Groove 4 has 12, and permanent magnet 5 also has 12, is embedded in respectively in these 12 grooves.Structure is simple, and effect is better.
Claims (3)
1. a permanent magnetism short joint, it comprises columnar body, one end of described body is provided with male joint, the other end is provided with female joint, it is characterized in that: the outer wall of described body has the groove that multiple notch is strip, a permanent magnet is set in described each groove, described permanent magnet comprises permanent magnet body and projection, the shape of described permanent magnet body is cylindricality, the cross sectional shape of permanent magnet body is oblate, described projection is located on the top end face of permanent magnet body, described projection is cylindrical, the diameter of described projection is less than the thickness of permanent magnet body, when described permanent magnet is set in a groove, with projection one end outwardly.
2. permanent magnetism short joint according to claim 1, is characterized in that: described male joint is the external thread section be located on body, and described female joint is the internal thread segment being located at body interior.
3. permanent magnetism short joint according to claim 1, is characterized in that: described groove has 12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520637093.9U CN204827230U (en) | 2015-08-21 | 2015-08-21 | Permanent magnetism nipple joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520637093.9U CN204827230U (en) | 2015-08-21 | 2015-08-21 | Permanent magnetism nipple joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204827230U true CN204827230U (en) | 2015-12-02 |
Family
ID=54684841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520637093.9U Expired - Fee Related CN204827230U (en) | 2015-08-21 | 2015-08-21 | Permanent magnetism nipple joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204827230U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105113988A (en) * | 2015-08-21 | 2015-12-02 | 于润桥 | Permanent magnet nipple |
-
2015
- 2015-08-21 CN CN201520637093.9U patent/CN204827230U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105113988A (en) * | 2015-08-21 | 2015-12-02 | 于润桥 | Permanent magnet nipple |
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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: 20151202 Termination date: 20180821 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |