CN2464927Y

CN2464927Y - Rotary joint releaser

Info

Publication number: CN2464927Y
Application number: CN 00248101
Authority: CN
Inventors: 周亚鸿
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-08-11
Filing date: 2000-08-11
Publication date: 2001-12-12
Anticipated expiration: 2010-08-11

Abstract

The utility model relates to a connecting and disconnecting device which is used for connecting and disconnecting an oil pumping rod and a piston when the diameter of the piston is larger than that of an oil pipe in an oil pumping well of an oil field. The utility model is composed of an upper body and a lower body, wherein, the upper body is composed of an upper connecting head, and a spiral sleeve, and the lower body is composed of a central rod, a track sleeve, a key block, a spacer, a spring, and a lower connecting head. When contacted with each other, the upper and the lower bodies can oppositely rotate 90 DEG automatically to realize butt joint, and after forming integration through the butt joint, the upper and the lower bodies move upwards to a pump port and then automatically rotate 90 DEG to realize disconnection. The utility model is characterized in that half circular arcs at the upper parts of ellipsoids which are provided the half circular arcs and are arranged at both ends of the head of the central rod are provided with rails, so that the successful butt joint of the utility model and the regular production of oil wells are guaranteed.

Description

Rotary on-off connector

Sucker rod and piston connected and separatory on-off connector when the utility model related to a kind of oil-field oil pumper well operations.

Oil well by the oil well pump pumping, during pipe aperture, need piston through on when piston is straight greater than pump with pump barrel G.I.H, lower sucker rod then, after the on-off connector upper and lower body butt joint that is connected on sucker rod bottom and piston top respectively, piston and sucker rod are joined together could pump.During well workover, also need piston just to trip out instrument in the well with after sucker rod separates.Finishing this process is exactly that the on-off connector upper and lower body separates.The on-off connector of prior art comes with some shortcomings at present, and as the patent No. 98212493.7 rotation type on-off connectors, its center-pole head is difficult to be introduced in the slotted eye, and it is unsuccessful to cause the upper body to dock with lower body, the problem that oil well can not be produced occurs.

The purpose of this utility model is to avoid existing rotation type on-off connector to dock unsuccessful deficiency, provides a kind of use reliable, the on-off connector that is easy to dock.

The purpose of this utility model is achieved in that it is made up of upper body and lower body.The upper body is made up of top connection, screw-casing; Lower body is made up of center-pole, track cover, key piece, pad, spring, lower contact.Lower body is connected on the piston of oil well pump, and with pump elder generation G.I.H, the upper body is connected on the sucker rod lower end, and with the sucker rod G.I.H, when upper and lower body contacted, sucker rod and piston just can join together realized oil pumping.When instrument trips out in well workover need be with well, at first sucker rod will be separated with piston, just need on-off connector upper and lower body uncoupling, the method for uncoupling is to carry sucker rod on the ground, after mentioning pumping hole on the on-off connector, and the upper and lower body uncoupling.

The inside of top connection has processed the slotted eye that there is semi arch at two ends, and there is the circular hole of a diameter greater than the slotted eye lateral length slotted eye upper end, and track is arranged at the bottom of top connection, and the effect of track is that the head of center-pole is introduced in the slotted eye.On the top connection lower tracks screw thread is arranged, this screw thread connects with screw-casing, and the screw-casing bottom has processed spiral rail groove, and this spiral rail groove cooperates with the spiral track key that the track of lower body puts realizes on-off connector butt joint and uncoupling.

The center-pole head of lower body be processed into the upper body in the ellipsoid of the two ends band semi arch that matches of the slotted eye of top connection, at the semi arch place on ellipsoid top processing track, this track cooperates with the track of top connection bottom to be introduced the head of center-pole in the slotted eye, screw thread is arranged at the center-pole bottom, this screw thread connects with the lower contact internal thread, processed keyway on the center-pole screw thread, a shoulder is arranged at keyway top.Track has put the spiral track key, and keyway is arranged in the hole.The key piece is installed in the keyway of center-pole and track cover, and the track cover is installed on the center-pole, and spring housing is on center-pole and by lower contact screw thread pretension.Between spring and the track cover pad, key piece are arranged, key piece, track cover, pad relative fixed under the initial tension of spring effect is integral, making track be enclosed within the center-pole surface can only upper and lowerly slide, and can not rotate, and the upward beginning position of slip is spacing by the shoulder on the center-pole.

Lower body is connected on the oil well pump piston, and with pump elder generation G.I.H, the upper body is connected on the sucker rod lower end, and the back is with the sucker rod G.I.H.During the upper and lower body contact, the center-pole head himself track and the upper body in be introduced in the slotted eye under the rail effect of lower contact bottom, this moment center-pole and top connection can only upper and lower relative motion, can not relatively rotate, when continue when descending the upper body, the spiral track key contacts of the spiral rail groove of screw-casing and track cover, and tabling.The upper body is continued descending, promotes track cover compression spring, makes spring energy-storage.Its space of living in allowed center-pole head rotation after the center-pole head put in place, at this moment, spring releases energy, and to promote the track cover up, under the spiral rail groove effect of spiral track key that track puts, screw-casing bottom, produce moment of torsion, make the automatic relative half-twist of center-pole and top connection, thereby the two ends that make the center-pole head have the ellipsoid of semi arch to become 90 ° with the slotted eye of top connection, have realized the butt joint of on-off connector upper and lower body this moment.

When instrument trips out in well workover need be with well, at first sucker rod and piston to be thrown off, just need on-off connector upper and lower body uncoupling.The method of uncoupling is to carry sucker rod on the ground, when mentioning pumping hole on the on-off connector, because the pumping hole internal diameter is less than the cover of the track on on-off connector external diameter, the track cover is blocked, at the spiral rail groove of screw-casing, under the spiral track key and the effect of key piece of track cover, the automatic half-twist of top connection and center-pole, the ellipsoid of center-pole head is alignd with the slotted eye of top connection, realize the on-off connector uncoupling.

The utility model is simple to operate, only need transfer, on carry that sucker rod just can achieve a butt joint, the purpose of uncoupling, there is track at the semi arch place on the ellipsoid top of center-pole head two ends band semi arch, the assurance on-off connector docks successfully and the oil well ordinary production, thereby the reliable operation of going into the well, the success rate height.

Accompanying drawing 1 is partly cuing open and local complete section figure of the utility model butt joint back general assembly drawing.

Accompanying drawing 2 is upper body of the present utility model assembly drawings.

Accompanying drawing 3 is lower body assembly drawings of the present utility model.

Accompanying drawing 4 is from the A-A sectional view in the accompanying drawing 1.

Details are as follows to embodiment of the present utility model in conjunction with the accompanying drawings: each component code name in the accompanying drawing, the 1st, top connection, the 2nd, screw-casing, the 3rd, center-pole, the 4th, track cover, the 5th, key piece, the 6th, pad, the 7th, spring, the 8th, lower contact.Can see the general structure of the utility model when docking and the assembly relation of each parts clearly from accompanying drawing 1.Become two parts behind the utility model uncoupling: upper body, lower body, shown in the accompanying drawing 2,3.

(Fig. 2) is connected on the rod string bottom in the upper body.Upper body (Fig. 2) is made up of top connection 1, screw-casing 2.Lower body (Fig. 3) is made up of center-pole 3, track cover 4, key piece 5, pad 6, spring 7, lower contact 8.Lower body (Fig. 3) is connected on the piston of oil well pump, with pump elder generation G.I.H.Upper body (Fig. 2) is connected on the sucker rod lower end, and with the sucker rod G.I.H, when upper body (Fig. 2), lower body (Fig. 3) contact, sucker rod and piston just can join together realizes oil pumping.When instrument trips out in well workover need be with well, at first sucker rod will be separated with piston, just need on-off connector upper body (Fig. 2), lower body (Fig. 3) uncoupling, the method for uncoupling is to carry sucker rod on the ground, after mentioning pumping hole on the on-off connector, upper body (Fig. 2), lower body (Fig. 3) uncoupling.

The inside of top connection 1 has processed the slotted eye C that there is semi arch at two ends, and there is the circular hole B of a diameter greater than the slotted eye lateral length slotted eye C upper end, and track is arranged at the bottom of lower contact 1, and the effect of track is that the head F with center-pole 3 introduces in the slotted eye C.On top connection 1 lower tracks screw thread is arranged, this screw thread connects with screw-casing 2, and screw-casing 2 bottoms have processed spiral rail groove D, and spiral rail groove D cooperates butt joint of realization on-off connector and uncoupling with the spiral track key G that the track of lower body (Fig. 3) overlaps on 4.

Center-pole 3 heads of lower body (Fig. 3) be processed into upper body (Fig. 2) in the ellipsoid F of the two ends band semi arch that matches of slotted eye C, at the semi arch place on ellipsoid F top processing track E, track E cooperates with the track of top connection 1 bottom, the head F of center-pole 3 is introduced in the slotted eye C, screw thread is arranged at center-pole 3 bottoms, this screw thread connects with lower contact 8 internal threads, has processed keyway on center-pole 3 screw threads, and a shoulder is arranged at keyway top.On the track cover 4 spiral track key G is arranged, keyway is arranged in the hole.Key piece 5 is installed in the keyway of center-pole 3 and track cover 4, and track cover 4 is installed on the center-pole 3, and spring 7 is enclosed within on the center-pole 3 and by lower contact 8 screw thread pretensions.Between spring 7 and the track cover 4 pad 6, key piece 5 are arranged, key piece 5, track cover 4, pad 6 relative fixed under spring 7 pretightning force effects are integral, track cover 4 can only upper and lowerly be slided on center-pole 3 surfaces, can not rotate, slip to go up the beginning position spacing by the shoulder on the center-pole 3.

Lower body (Fig. 3) is connected on the oil well pump piston, and with pump elder generation G.I.H, upper body (Fig. 2) is connected on the sucker rod lower end, and the back is with the sucker rod G.I.H.When upper body (Fig. 2), lower body (Fig. 3) contact, center-pole 3 head F himself track E and the rail effect of top connection 1 bottom under be introduced in the slotted eye C, at this moment, center-pole 3 and top connection 1 can only upper and lower relative motions, can not relatively rotate, when upper body (Fig. 2) continues when descending, the spiral rail groove D of screw-casing 2 contacts with the spiral track key G of track cover 4, and tabling.Upper body (Fig. 2) is continued descending, promotes track cover 4 compression springs 7, makes spring 7 energy storage.Its space of living in allowed the head F of center-pole 3 to rotate after center-pole 3 head F put in place, at this moment, spring 7 releases energy and promotes track and overlap 4 up, under the spiral rail groove D effect of the spiral track key G on the track cover 4, screw-casing 2 bottoms, produce moment of torsion, make center-pole 3 and top connection 1 automatic relative half-twist, thereby the two ends that make center-pole 3 heads have the ellipsoid F of semi arch to become 90 ° with the slotted eye C of top connection 1, reach the state of accompanying drawing 4, realized the butt joint of on-off connector upper and lower body this moment, as shown in Figure 1, sucker rod just can drive the piston motion oil pumping.

When instrument trips out in well workover need be with well, at first sucker rod and piston to be thrown off, just need on-off connector upper body (Fig. 2), lower body (Fig. 3) uncoupling.The method of uncoupling is to carry sucker rod on the ground, when mentioning pumping hole on the on-off connector, because the pumping hole internal diameter is less than the external diameter of the cover of the track on the on-off connector 4, track cover 4 is blocked, at the spiral rail groove D of screw-casing 2, under the spiral track key G of track cover 4 and the effect of key piece 5, top connection 1 and center-pole 3 automatic half-twists, the ellipsoid F of center-pole 3 heads is alignd with the slotted eye C of top connection 1, realize the on-off connector uncoupling.

Claims

1, a kind ofly realizes that sucker rod connects, throws off the rotary on-off connector of usefulness with piston when being used for oil-well pump of oil well piston diameter that oil-field oil pumper produces greater than pipe aperture, it divides upper body and lower body, the upper body is made up of top connection (1), screw-casing (2), on top connection (1) lower tracks screw thread is arranged, this screw thread connects with screw-casing (2); Lower body is made up of center-pole (3), track cover (4), key piece (5), pad (6), spring (7), lower contact (8), track cover (4) is installed on the center-pole (3), spring (7) is enclosed within on the center-pole (3), pad (6), key piece (5) are arranged between spring (7) and the track cover (4), and its special card is: there is track E at the semi arch place on the ellipsoid top of center-pole (3) head two ends band semi arch.