CN201885845U - Negative pressure self-locking vertical pipe pressure sensor for petroleum drilling machine - Google Patents
Negative pressure self-locking vertical pipe pressure sensor for petroleum drilling machine Download PDFInfo
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- CN201885845U CN201885845U CN 201020630531 CN201020630531U CN201885845U CN 201885845 U CN201885845 U CN 201885845U CN 201020630531 CN201020630531 CN 201020630531 CN 201020630531 U CN201020630531 U CN 201020630531U CN 201885845 U CN201885845 U CN 201885845U
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- negative pressure
- top cover
- piston body
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Abstract
The utility model relates to the technical field of a ground high-pressure manifold pressure detection device of drilling fluid of petroleum drilling machine, which is a negative pressure self-locking vertical pipe pressure sensor for a petroleum drilling machine; the sensor comprises a cylinder body, a top cover and a piston body; the top cover is fixedly arranged on the upper end of the cylinder body; a through hole communicated with the inner cavity of the cylinder body is arranged on the top cover; a piston body capable of moving up and down along the inner wall of the cylinder body is arranged in the inner cavity of the cylinder body; a hydraulic oil passage in the horizontal direction is arranged on the cylinder wall below the inner cavity of the cylinder body; a connecting passage in the horizontal direction respectively communicated with the inner cavity of the cylinder body and the hydraulic oil passage is arranged on the bottom wall of the inner cavity of the cylinder body; and an annular lug boss is arranged on the bottom wall of the outer side of the connecting passage. The sensor is reasonable and compact in structure and convenient to use, can ensure that the drilling liquid at the top surface of the piston body does not enter a cavity and a pipeline at one end of hydraulic oil, thereby preventing the drilling liquid from damaging or corroding various types of devices at the hydraulic end, and eliminating cleaning and maintaining work of the hydraulic cavity and the pipeline caused by the invasion of drilling liquid.
Description
Technical field
The utility model relates to oil-well rig drilling fluid ground high pressure pipe joint pressure-detecting device technical field, is a kind of oil-well rig negative pressure self-locking standpipe pressure sensor.
Background technology
At present, drilling fluid pipe internal pressure pick-up unit in usefulness mainly contains two kinds, a kind of is " plastic cup-type pressure transducer ", this sensor is because the material of glue cup is a rubber, and rubber is in heatproof, there is significant limitation withstand voltage aspect, particularly very limited to the tolerance of pressure surge, the problem that in the middle of using, has failure rate height and poor reliability, particularly scurry into the hydraulic pressure end at drilling fluid after the breakage of glue cup, can be to hydraulic line, all kinds of high-voltage quick joints, tensimeter and piezo-electric conversion Sensitive Apparatus cause damage, it is big not only to repair workload, length consuming time, and safety drilling caused a hidden trouble.Another kind is " a piston type standpipe pressure sensor ", as accompanying drawing 1, shown in 2: the main improvements of this sensor are to change the media isolated body into piston by original glue cup, piston has overcome the part shortcoming of glue cup, under normal circumstances (be meant the sufficient and no leak condition of hydraulic oil) and can satisfy request for utilization, but the principal character of drilling well work moves about exactly, the dismounting of equipment and various pipelines and installation are very frequent, in use be difficult to avoid fully the leakage of hydraulic oil, in use (drilling fluid pipeline band pressure condition) hydraulic oil is in case leakage, the consequence that causes is the same with the consequence that the breakage of glue cup is caused, and that is to say that piston type sensor can not satisfy full operating mode request for utilization.
Summary of the invention
The utility model provides a kind of oil-well rig negative pressure self-locking standpipe pressure sensor, has overcome the deficiency of above-mentioned prior art, and it can effectively solve there is potential safety hazard in existing drilling fluid pipe internal pressure pick-up unit because of failure rate height and poor reliability problem.
The technical solution of the utility model realizes by following measure: a kind of oil-well rig negative pressure self-locking standpipe pressure sensor comprises cylindrical shell, top cover and piston body; Top cover is fixedly mounted on the upper end of cylindrical shell, the through hole that communicates with cylinder lumen is arranged on top cover, the piston body that can move up and down along cylinder inboard wall is installed in cylinder lumen, the hydraulic oil channel that left and right directions is arranged on the barrel below the cylinder lumen, the interface channel that above-below direction is arranged on the diapire of cylinder lumen and communicate with cylinder lumen and hydraulic oil channel respectively, on the diapire in the interface channel outside, annular boss is arranged, on the diapire in the annular boss outside, annular groove is arranged, the O RunddichtringO is installed in annular groove, have and the corresponding groove of annular boss in the bottom of piston body, the diameter of groove is greater than the external diameter of annular boss.
Be further optimization and/or improvements below to above-mentioned utility model technical scheme:
Can there be at least one seal groove in the outside of above-mentioned piston body, and packoff is installed in seal groove.
The outside of above-mentioned piston body can be intervally distributed with seal groove and lower seal groove cavity from top to bottom.
Above-mentioned going up in the seal groove can be equipped with the one-way sealing cage ring.
In the above-mentioned lower seal groove cavity O RunddichtringO can be installed.
Can there be mounting groove the upper end of above-mentioned cylindrical shell, and top cover is fixedly mounted in the mounting groove by screw thread.
The utility model reasonable and compact in structure; easy to use; it can guarantee that the drilling fluid of piston body end face can not enter the chamber and the pipeline of hydraulic oil one end; thereby eliminate erosion and the infringement of drilling fluid, eliminated the cleaning maintenance work that produces because of scurrying into of drilling fluid hydraulic chamber and pipeline to hydraulic pressure end various device.
Description of drawings
Accompanying drawing 1 is looked the sectional structure synoptic diagram for the master of existing known piston type standpipe pressure sensor.
Accompanying drawing 2 is the vertical view of accompanying drawing 1.
Accompanying drawing 3 is looked the sectional structure synoptic diagram for the master of the utility model most preferred embodiment when operate as normal.
Accompanying drawing 4 is looked the sectional structure synoptic diagram for the master of the utility model most preferred embodiment when hydraulic oil is missed state.
Coding in the accompanying drawing is respectively: 1 is cylindrical shell, and 2 is top cover, and 3 is piston body, and 4 is cylinder lumen, and 5 is through hole, 6 is hydraulic oil channel, and 7 is interface channel, and 8 is annular boss, and 9 is annular groove, and 10 is the O RunddichtringO, 11 is groove, and 12 is last seal groove, and 13 is lower seal groove cavity, and 14 is the space.
Embodiment
The utility model is not subjected to the restriction of following embodiment, can determine concrete embodiment according to the technical solution of the utility model and actual conditions.
In the utility model, for convenience of description, the description of the relative position relation of each parts all is that the Butut mode according to Figure of description is described, as: the position relation of upper and lower, left and right etc. is what to determine according to the Butut direction of Figure of description.
Below in conjunction with embodiment and accompanying drawing the utility model is further described:
Shown in accompanying drawing 3,4, this oil-well rig negative pressure self-locking standpipe pressure sensor comprises cylindrical shell 1, top cover 2 and piston body 3; Top cover 2 is fixedly mounted on the upper end of cylindrical shell 1, the through hole 5 that communicates with cylinder lumen 4 is arranged on top cover 2, the piston body 3 that can move up and down along cylinder inboard wall is installed in cylinder lumen 4, the hydraulic oil channel 6 that left and right directions is arranged on the barrel below the cylinder lumen 4, the interface channel 7 that above-below direction is arranged on the diapire of cylinder lumen 4 and communicate with cylinder lumen 4 and hydraulic oil channel 6 respectively, annular boss 8 is arranged on the diapire in interface channel 7 outsides, annular groove 9 is arranged on the diapire in annular boss 8 outsides, O RunddichtringO 10 is installed in annular groove 9, have and annular boss 8 corresponding grooves 11 in the bottom of piston body 3, the diameter of groove 11 is greater than the external diameter of annular boss 8.
Can according to actual needs above-mentioned oil-well rig negative pressure self-locking standpipe pressure sensor be made further optimization and/or improvements:
Shown in accompanying drawing 3,4, there is at least one seal groove in the outside of piston body 3, and packoff is installed in seal groove.
Shown in accompanying drawing 3,4, the outside of piston body 3 is intervally distributed with seal groove 12 and lower seal groove cavity 13 from top to bottom.
Shown in accompanying drawing 3,4, in the last seal groove 12 the one-way sealing cage ring is installed.
Shown in accompanying drawing 3,4,13 are equipped with the O RunddichtringO in the lower seal groove cavity.
Shown in accompanying drawing 3,4, there is mounting groove the upper end of cylindrical shell 1, and top cover 2 is fixedly mounted in the mounting groove by screw thread.
Above technical characterictic has constituted most preferred embodiment of the present utility model, and it has stronger adaptability and best implementation result, can increase and decrease non-essential technical characterictic according to actual needs, satisfies the demand of different situations.
The use of the utility model most preferred embodiment: when the time in normal operating conditions, this moment, piston body 3 was in the position at cylinder lumen 4 middle parts, it above the piston body 3 drilling fluid (mud), be hydraulic oil below, piston body 3 remains static in normal operation substantially, packoffs in last seal groove 12 and the lower seal groove cavity 13 also are in pressure balance, in effective isolation also stablely in drilling fluid and the hydraulic oil transmitting pressure signal to each sensor and instrument; When abnormal operating state, this moment is owing to hydraulic oil emptying, piston body 3 is in the bottom of cylinder lumen 4, the groove 11 of piston body 3 bottoms is corresponding with annular boss 8, because the tolerance clearance of surface of contact is very little, (hydraulic oil on one side) is close on three metal coverings on the O RunddichtringO 10 back pressure directions, there is not deformation space, and in the one side of top surface to drilling fluid, leave a part of space 14 between cylindrical shell 1 and the piston body 3, its effect is to take a part of hydraulic oil between the O RunddichtringO in 13 in O RunddichtringO 10 and lower seal groove cavity, under the pressure of piston body 3, can produce certain plastic yield at O RunddichtringO 10 under the situation of hydraulic oil channel 6 emptying to space 14, this distortion can promote hydraulic oil and flow to the drilling hydraulic force direction, that is to say, under the effect of drilling liquid pressure, the hydraulic oil that the space is 14 li can produce the reversed flow trend to the drilling hydraulic force direction, the pressure that this trend produced acts in one-way sealing cage ring in the seal groove 12 and the lower seal groove cavity on 13 the O RunddichtringO, the pressure of drilling fluid direction is big more, O RunddichtringO 10 is also big more to the deformation tendency of drilling hydraulic direction, the buffer brake in space 14 is also just big more, it is the relation that increases synchronously and reduce, consequently act in one-way sealing cage ring in the seal groove 12 and the lower seal groove cavity 13 O RunddichtringO both sides and go up one-way sealing cage ring in the seal groove 12 and lower seal groove cavity in pressure between 13 the O RunddichtringO be in equilibrium state all the time, drilling fluid just can not enter in one-way sealing cage ring in the seal groove 12 and the lower seal groove cavity between 13 the O RunddichtringO like this, also with regard to the more impossible space 14 that enters, thereby reach big more, the result that sealing effectiveness is good more at the uniaxial pressure of drilling fluid direction.
Claims (7)
1. an oil-well rig negative pressure self-locking standpipe pressure sensor is characterized in that comprising cylindrical shell, top cover and piston body; Top cover is fixedly mounted on the upper end of cylindrical shell, the through hole that communicates with cylinder lumen is arranged on top cover, the piston body that can move up and down along cylinder inboard wall is installed in cylinder lumen, the hydraulic oil channel that left and right directions is arranged on the barrel below the cylinder lumen, the interface channel that above-below direction is arranged on the diapire of cylinder lumen and communicate with cylinder lumen and hydraulic oil channel respectively, on the diapire in the interface channel outside, annular boss is arranged, on the diapire in the annular boss outside, annular groove is arranged, the O RunddichtringO is installed in annular groove, have and the corresponding groove of annular boss in the bottom of piston body, the diameter of groove is greater than the external diameter of annular boss.
2. oil-well rig negative pressure self-locking standpipe pressure sensor according to claim 1 is characterized in that there is at least one seal groove in the outside of piston body, and packoff is installed in seal groove.
3. oil-well rig negative pressure self-locking standpipe pressure sensor according to claim 2 is characterized in that the outside of piston body is intervally distributed with seal groove and lower seal groove cavity from top to bottom.
4. oil-well rig negative pressure self-locking standpipe pressure sensor according to claim 3 is characterized in that being equipped with in the seal groove one-way sealing cage ring.
5. according to claim 3 or 4 described oil-well rig negative pressure self-locking standpipe pressure sensors, it is characterized in that being equipped with in the lower seal groove cavity O RunddichtringO.
6. according to claim 1 or 2 or 3 or 4 described oil-well rig negative pressure self-locking standpipe pressure sensors, it is characterized in that there is mounting groove the upper end of cylindrical shell, top cover is fixedly mounted in the mounting groove by screw thread.
7. oil-well rig negative pressure self-locking standpipe pressure sensor according to claim 5 is characterized in that there is mounting groove the upper end of cylindrical shell, and top cover is fixedly mounted in the mounting groove by screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020630531 CN201885845U (en) | 2010-11-29 | 2010-11-29 | Negative pressure self-locking vertical pipe pressure sensor for petroleum drilling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020630531 CN201885845U (en) | 2010-11-29 | 2010-11-29 | Negative pressure self-locking vertical pipe pressure sensor for petroleum drilling machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201885845U true CN201885845U (en) | 2011-06-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201020630531 Expired - Fee Related CN201885845U (en) | 2010-11-29 | 2010-11-29 | Negative pressure self-locking vertical pipe pressure sensor for petroleum drilling machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201885845U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105083142A (en) * | 2014-05-20 | 2015-11-25 | 福特全球技术公司 | Fastening and sensing apparatus |
-
2010
- 2010-11-29 CN CN 201020630531 patent/CN201885845U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105083142A (en) * | 2014-05-20 | 2015-11-25 | 福特全球技术公司 | Fastening and sensing apparatus |
| CN105083142B (en) * | 2014-05-20 | 2019-07-23 | 福特全球技术公司 | Fastening and sensing device |
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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: 20110629 Termination date: 20161129 |