CN202300379U - Extending-out position detecting device of backup device - Google Patents
Extending-out position detecting device of backup device Download PDFInfo
- Publication number
- CN202300379U CN202300379U CN2011203147118U CN201120314711U CN202300379U CN 202300379 U CN202300379 U CN 202300379U CN 2011203147118 U CN2011203147118 U CN 2011203147118U CN 201120314711 U CN201120314711 U CN 201120314711U CN 202300379 U CN202300379 U CN 202300379U
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- sensing element
- extending
- hole
- backup device
- bull stick
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Abstract
The utility model discloses an extending-out position detecting device of a backup device, which overcomes the technical defect that the position of the backup device can not be indirectly judged in the prior art. The detecting device is characterized in that the backup device is arranged on a drill collar base body by a hydraulic system and comprises an anti-rotation rod; the detecting device also comprises a first sensing element, a hole, a second sensing element and a calculator, wherein the first sensing element is arranged at the bottom end of the anti-rotation rod; the hole is positioned on the drill collar base body and can contain the anti-rotation rod for extending in and out; the second sensing element is arranged at the bottom part of the hole; and the calculator is used for calculating the extending-out position of the backup device according to electric signals generated by the first sensing element or the second sensing element. According to the extending-out position detecting device disclosed by the embodiment of the invention, a Hall sensor is used for directly feedbacking the position of the backup device, and the position of the backup device can be directly judged, so that the misjudgment generated by influence of a hydraulic system is avoided, and the test success ratio is increased.
Description
Technical field
The utility model relates to the formation testing instrument, relates in particular to a kind of telescoping ram extended position checkout gear.
Background technology
In the existing formation testing instrument, stretch out and the retrieving position of telescoping ram all are to carry out indirect judgement through the variation of hydraulic system pressure.Run into hydraulic circuit and break down etc. as crossing, erroneous judgement then very easily to occur and make test crash even damage instrument.
Therefore, prior art utilizes hydraulic system to judge the telescoping ram position indirectly, and judged result receives the hydraulic system influence easily, is necessary to improve.
The utility model content
The utility model technical problem to be solved is to overcome the technological deficiency that can not directly judge the telescoping ram position in the prior art.
In order to solve the problems of the technologies described above, the utility model provides a kind of telescoping ram extended position checkout gear, and this telescoping ram is installed on the drill collar matrix through hydraulic system, comprises anti-bull stick, and this checkout gear comprises:
Be installed in first sensing element of said anti-bull stick bottom; Be positioned at said drill collar matrix and can hold said anti-bull stick and stretch into the hole of stretching out, second sensing element that is provided with in the bottom in said hole; The signal of telecommunication that is produced according to said first sensing element or second sensing element calculates the calculator of the position that said telescoping ram stretches out.
Preferably, said first sensing element and second sensing element, one of them comprises magnet, another comprises Hall element.
Preferably, said calculator calculates the position that said telescoping ram stretches out according to the magnitude of voltage that said Hall element produces.
Preferably, the degree of depth in said hole is greater than the length of said anti-bull stick.
Compared with prior art, the telescoping ram position can directly be judged in the position that the embodiment of the utility model utilizes Hall element directly to feed back telescoping ram, avoids receiving the influence of hydraulic system and produces erroneous judgement, has improved the test success rate.The embodiment of the utility model is because measuring cell is durable reliable, so equipment life is long, and is safe and reliable.The example structure of the utility model is simple, is easy to realize, and is with low cost.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment.
The specific embodiment
For the purpose, technical scheme and the advantage that make the utility model is clearer, hereinafter will combine accompanying drawing that the embodiment of the utility model is elaborated.Need to prove that under the situation of not conflicting, embodiment among the application and the characteristic among the embodiment be combination in any each other.
Fig. 1 is the composition sketch map of the utility model embodiment.As shown in Figure 1, in the present embodiment, hydraulic system 2 is fixed on the inside of drill collar matrix 3 through screw thread, can telescoping ram 1 be released drill collar matrix 3 through hydraulic drive.Telescoping ram 1 comprises backup pedestal 4 and anti-bull stick 5, and wherein anti-bull stick 5 mainly plays the effect that prevents 4 rotations of backup pedestal.First sensing element 6 is installed in the bottom of anti-bull stick 5.Include in the drill collar matrix 3 to hold and prevent that bull stick 5 stretches into the hole 7 of stretching out, the degree of depth in hole 7 is greater than the length of anti-bull stick 5.7 bottom is provided with second sensing element 8 in the hole.The distance of second sensing element 8 and first sensing element 6 is not simultaneously; First sensing element 6 and 8 one of them generations and the corresponding signal of telecommunication of this distance of second sensing element, the calculator (not shown) is calculated the position that telescoping ram stretched out according to this signal of telecommunication.
Among the embodiment of the utility model, first sensing element 6 is a magnet, and second sensing element 8 is a Hall element.In other embodiment, first sensing element 6 also can be Hall element, and second sensing element 8 can be magnet.
The embodiment of the utility model in use, along with anti-bull stick 5 along the hole 7 when on short transverse, moving, the effect of the magnet that Hall element is installed on anti-bull stick 5 bottoms is generation voltage down.Wherein magnet is different with the distance of Hall element, and the magnitude of voltage that Hall element produces is corresponding also different.The embodiment of the utility model utilizes calculator to calculate the distance of magnet apart from Hall element through the magnitude of voltage that Hall element produced, and draws the position that telescoping ram 1 is stretched out in view of the above.
Though the embodiment that the utility model disclosed as above, the embodiment that described content just adopts for the ease of understanding the utility model is not in order to limit the utility model.Technician under any the utility model in the technical field; Under the prerequisite of spirit that does not break away from the utility model and disclosed and scope; Can do any modification and variation what implement in form and on the details; But the scope of patent protection of the utility model still must be as the criterion with the scope that appending claims was defined.
Claims (3)
1. telescoping ram extended position checkout gear, this telescoping ram is installed on the drill collar matrix through hydraulic system, comprises anti-bull stick, it is characterized in that, and this checkout gear comprises:
Be installed in first sensing element of said anti-bull stick bottom; Be positioned at said drill collar matrix and can hold said anti-bull stick and stretch into the hole of stretching out, second sensing element that is provided with in the bottom in said hole; The signal of telecommunication that is produced according to said first sensing element or second sensing element calculates the calculator of the position that said telescoping ram stretches out.
2. checkout gear according to claim 1 is characterized in that:
Said first sensing element and second sensing element, one of them comprises magnet, another comprises Hall element.
3. checkout gear according to claim 1 is characterized in that:
The degree of depth in said hole is greater than the length of said anti-bull stick.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203147118U CN202300379U (en) | 2011-08-26 | 2011-08-26 | Extending-out position detecting device of backup device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203147118U CN202300379U (en) | 2011-08-26 | 2011-08-26 | Extending-out position detecting device of backup device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202300379U true CN202300379U (en) | 2012-07-04 |
Family
ID=46369301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203147118U Expired - Lifetime CN202300379U (en) | 2011-08-26 | 2011-08-26 | Extending-out position detecting device of backup device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202300379U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102865070A (en) * | 2012-09-19 | 2013-01-09 | 中国海洋石油总公司 | Positioned backup device |
-
2011
- 2011-08-26 CN CN2011203147118U patent/CN202300379U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102865070A (en) * | 2012-09-19 | 2013-01-09 | 中国海洋石油总公司 | Positioned backup device |
| CN102865070B (en) * | 2012-09-19 | 2016-02-03 | 中国海洋石油总公司 | A kind of locate mode pushing device |
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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 Limited Patentee after: China Offshore Oil Group Co., Ltd. Address before: 100010 Chaoyangmen North Street, Dongcheng District, Dongcheng District, Beijing Co-patentee before: China Oilfield Services Limited Patentee before: China National Offshore Oil Corporation |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120704 |