CN201934024U - Single cylinder difunctional hydraulic drilling jar - Google Patents
Single cylinder difunctional hydraulic drilling jar Download PDFInfo
- Publication number
- CN201934024U CN201934024U CN2011200357190U CN201120035719U CN201934024U CN 201934024 U CN201934024 U CN 201934024U CN 2011200357190 U CN2011200357190 U CN 2011200357190U CN 201120035719 U CN201120035719 U CN 201120035719U CN 201934024 U CN201934024 U CN 201934024U
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- China
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- valve
- spline
- urceolus
- spindle
- outer barrel
- Prior art date
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Abstract
The utility model relates to a single cylinder difunctional hydraulic drilling jar, and comprises a spline spindle, wherein the spline spindle is sleeved with a spline outer barrel, a valve spindle is provided with a drilling fluid channel along the central axis, the spline spindle is connected with the valve spindle through a spindle collar. The spline outer barrel is connected with a float outer barrel, the float outer barrel is connected with a valve outer barrel, the valve outer barrel is connected with a lower joint, one end of the valve spindle which is closer to the spindle collar is sleeved with a float, a metering valve and a sealing ring are fixed in the middle of the valve spindle through limit nuts, and the external circumference of the metering valve is provided with an oil draining groove. An inner cavity with a diameter longer than the diameter of the valve spindle is arranged inside the valve outer barrel, and the middle of the inner cavity of the valve outer barrel is provided with annular protrusions which are matched with the external diameter of the metering valve. The single cylinder difunctional hydraulic drilling jar adopts a hydraulic cylinder with an upper cavity and a lower cavity, therefore one hydraulic cylinder is equivalent to two common cylinders, and shocks of two directions are generated by the movement of the metering valve between the two cavities. The two-cavity structure simplifies the structure of two hydraulic cylinders, enables the shocks to be more reliable, prolongs the service life of the cylinder body, is convenient in mounting and dismounting, and is low in maintenance cost.
Description
Technical field
The utility model relates to the all-hydraulic drilling jar of a kind of single-cylinder dual-action, be a kind of be that drilling rig is arranged, be the device that equally is used for drilling rod.
Background technology
The all-hydraulic drilling jar of present stage double acting in all over the world application more and more widely, main what adopt is two cylinder structure, hits action on promptly and hits action down and carry out in other oil cylinder of branch, and overall structure is long, on hit action and hit down the harmony of action relatively poor, be easy to generate and creep.Install and make and keep in repair a lot of inconvenience are all arranged.This just needs a kind of advantage that had both had the all-hydraulic drilling jar of twin-tub structure of development, can overcome the drilling jar of the shortcoming of this twin-tub structure again, so develop the all-hydraulic drilling jar of single fluid cylinder double acting.
Summary of the invention
In order to overcome prior art problems, the utility model proposes the all-hydraulic drilling jar of a kind of single-cylinder dual-action.Described bumper jar produces two-way jarring with single hydraulic cylinder, has both had the advantage of the all-hydraulic drilling jar of twin-tub structure, can overcome again this twin-tub structural compatibility relatively poor, be easy to generate the shortcoming of creeping.
The purpose of this utility model is achieved in that the all-hydraulic drilling jar of a kind of single-cylinder dual-action, comprise: the external surface that is provided with the drilling fluid passage along central axis has the columniform spline mandrel of spline, the spline urceolus that the spline of described multiple key core outer shaft sleeve and spline mandrel matches, described spline mandrel is connected with the poppet shaft that is provided with the drilling fluid passage along central axis by the mandrel box cupling, described spline urceolus is threaded with the float urceolus, described float urceolus is threaded with the valve urceolus, the lower contact of described valve urceolus is threaded, described poppet shaft is with float at an end of described mandrel box cupling, the described poppet shaft middle part metering valve and the joint ring of stop nut stationary annular, described metering valve excircle is provided with many drain pans, be provided with the inner chamber of diameter in the described valve urceolus greater than poppet shaft, be full of hydraulic oil in the described inner chamber, the middle part of tube inner chamber is provided with the annular projection that matches with described metering valve external diameter outside described valve, and described annular projection is divided into epicoele and cavity of resorption with the outer tube inner chamber of valve.
Further, described metering valve excircle is provided with two drain pans.
Further, described valve urceolus and lower contact, poppet shaft and valve urceolus, the contact site of poppet shaft and lower contact seals with seal.
The beneficial effect that the utility model produces is: the hydraulic cylinder of the upper and lower cavity that the utility model adopts, a cylinder is equivalent to two cylinders, utilizes the motion of metering valve between two chambeies, produces the jarring of both direction.The structure in two chambeies has been simplified the structure of two hydraulic cylinders greatly, makes jarring more reliable, and the life-span of cylinder body is longer.Owing to have only a cylinder, installation and removal are convenient, and maintenance cost is low.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is embodiment one a described bumper jar structural principle schematic diagram of the present utility model;
Fig. 2 is the enlarged drawing at the metering valve place of embodiment one described bumper jar of the present utility model, is the enlarged drawing at A place among Fig. 1.
The specific embodiment
Embodiment one:
Present embodiment is the all-hydraulic drilling jar of a kind of single-cylinder dual-action, as shown in Figure 1.Present embodiment comprises: the external surface that is provided with the drilling fluid passage along central axis has the columniform spline mandrel 1 of spline, the spline urceolus 2 that the spline of described multiple key core outer shaft sleeve and spline mandrel matches, described spline mandrel is connected with the poppet shaft 4 that is provided with the drilling fluid passage along central axis by mandrel box cupling 3, described spline urceolus is threaded with float urceolus 5, described float urceolus is threaded with valve urceolus 10, described valve urceolus is threaded with lower contact 11, described poppet shaft is with float 4 at an end of described mandrel box cupling, the described poppet shaft middle part metering valve 9 and the joint ring 8 of stop nut 7 stationary annular, described metering valve excircle is provided with many drain pans, be provided with the inner chamber of diameter in the described valve urceolus greater than poppet shaft, be full of hydraulic oil in the described inner chamber, the middle part of the outer tube inner chamber of described valve is provided with the annular projection 102 that matches with described metering valve external diameter, and described annular projection is divided into epicoele 101 and cavity of resorption 103 with the outer tube inner chamber of valve.
The described bumper jar of present embodiment is mounted on the drilling rod, is connected with drilling rod up and down, forms the part of drilling rod.The described bumper jar of present embodiment is provided with the drilling fluid passage that communicates with drilling rod along central axis, can make drilling fluid flow through the described bumper jar of present embodiment smoothly.
The described spline of present embodiment is used to transmit the moment of torsion of drilling well, Lower Half drilling rod and spline mandrel that spline urceolus, float urceolus, valve urceolus, lower contact and lower contact are connected, and the first half drilling rod of splined shaft connection can have the jarring space of relative displacement.
The key of present embodiment is the annular projection that matches with the metering valve external diameter on metering valve and the inner chamber, and both have produced the effect of jarring by the effect of hydraulic oil.What of drain pan on the excircle of the described metering valve of present embodiment by the size of oil cylinder, produce the size of jarring and determine.Usually can be provided with two, three, four, decide with concrete condition.
The principle of present embodiment is:
On hit when action, splined mandrel pulling poppet shaft moves upward with respect to the valve urceolus, the external cylindrical surface of metering valve closely contacts with the annular projection of valve urceolus, because metering valve moves up, hydraulic oil in the extruding epicoele, make the top of metering valve form a high pressure chest, hydraulic oil can only slowly be let out to cavity of resorption from the drain pan of metering valve outer circumference surface.Metering valve slowly moves up, and the pressure in the epicoele is increasing, and when metering valve moves up when crossing annular projection, pressure release suddenly produces jarring.
Under hit when action, splined mandrel promotes poppet shaft and moves downward with respect to the valve urceolus, the external cylindrical surface of metering valve closely contacts with the annular projection of valve urceolus, because metering valve moves down, the hydraulic oil in the extruding cavity of resorption forms a high pressure chest like this below metering valve, hydraulic oil can only slowly be let out to epicoele in the drain pan of metering valve excircle, metering valve slowly moves down, and when metering valve moves down when crossing annular projection, pressure release suddenly produces jarring.
Embodiment two:
Present embodiment is the improvement of embodiment one, is that embodiment one is about the metering valve refinement.The excircle of the described metering valve of present embodiment is provided with two drain pans.
Embodiment three:
Present embodiment is the improvement of the foregoing description, is the refinement that the foregoing description is provided with about seal.Described valve urceolus of present embodiment and lower contact, poppet shaft and valve urceolus, the contact site of poppet shaft and lower contact seals with seal.
It should be noted that at last, below only unrestricted in order to the explanation the technical solution of the utility model, although the utility model is had been described in detail with reference to the preferred arrangement scheme, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement the technical solution of the utility model (such as the connected mode of whole device, each annexation etc.), and not break away from the spirit and scope of technical solutions of the utility model.
Claims (3)
1. all-hydraulic drilling jar of single-cylinder dual-action, comprise: the external surface that is provided with the drilling fluid passage along central axis has the columniform spline mandrel of spline, the spline urceolus that the spline of described multiple key core outer shaft sleeve and spline mandrel matches, described spline mandrel is connected with the poppet shaft that is provided with the drilling fluid passage along central axis by the mandrel box cupling, described spline urceolus is threaded with the float urceolus, described float urceolus is threaded with the valve urceolus, the lower contact of described valve urceolus is threaded, described poppet shaft is with float at an end of described mandrel box cupling, it is characterized in that, the described poppet shaft middle part metering valve and the joint ring of stop nut stationary annular, described metering valve excircle is provided with many drain pans, be provided with the inner chamber of diameter in the described valve urceolus greater than poppet shaft, be full of hydraulic oil in the described inner chamber, the middle part of tube inner chamber is provided with the annular projection that matches with described metering valve external diameter outside described valve, and described annular projection is divided into epicoele and cavity of resorption with the outer tube inner chamber of valve.
2. bumper jar according to claim 1 is characterized in that, the excircle of described metering valve is provided with two drain pans.
3. bumper jar according to claim 1 is characterized in that, described valve urceolus and lower contact, and poppet shaft and valve urceolus, the contact site of poppet shaft and lower contact seals with seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200357190U CN201934024U (en) | 2011-02-10 | 2011-02-10 | Single cylinder difunctional hydraulic drilling jar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200357190U CN201934024U (en) | 2011-02-10 | 2011-02-10 | Single cylinder difunctional hydraulic drilling jar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201934024U true CN201934024U (en) | 2011-08-17 |
Family
ID=44445546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200357190U Expired - Fee Related CN201934024U (en) | 2011-02-10 | 2011-02-10 | Single cylinder difunctional hydraulic drilling jar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201934024U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110359870A (en) * | 2018-04-03 | 2019-10-22 | 西南石油大学 | A kind of all-hydraulic bumper jar |
-
2011
- 2011-02-10 CN CN2011200357190U patent/CN201934024U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110359870A (en) * | 2018-04-03 | 2019-10-22 | 西南石油大学 | A kind of all-hydraulic bumper jar |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20170727 Granted publication date: 20110817 |
|
| PD01 | Discharge of preservation of patent | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20200727 Granted publication date: 20110817 |
|
| 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: 20110817 Termination date: 20180210 |