CN2419368Y - Self locked composite packing casing - Google Patents
Self locked composite packing casing Download PDFInfo
- Publication number
- CN2419368Y CN2419368Y CN 00211379 CN00211379U CN2419368Y CN 2419368 Y CN2419368 Y CN 2419368Y CN 00211379 CN00211379 CN 00211379 CN 00211379 U CN00211379 U CN 00211379U CN 2419368 Y CN2419368 Y CN 2419368Y
- Authority
- CN
- China
- Prior art keywords
- ball
- sucker rod
- packing
- ball seat
- spring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Sealing Devices (AREA)
Abstract
The utility model relates to a self locked composite packing device. The utility model is characterized in that a sucker rod is provided with a ball seat at the point close to a well mouth, and the ball seat is in accord with a rotary ball; the rotary ball is connected with a packing lower box which is sheathed on the sucker rod; a sleeve is arranged in a cavity of the rotary ball; a press cover matches with the ball seat to press the bulb part of the rotary between the ball seat and the press cover; the upper part of the rotary ball is provided with a spring supporting seat, and a compression spring is arranged at the upper end of the spring supporting seat; a plurality of clamping teeth are arranged at the upper end of the compression spring to form a clamping ring which is clamped at the outer wall of a press rod, and the press rod is connected with an upper cover of the spring supporting seat and the outer wall of the clamping ring; a nut on the press rod is tightly butted at the upper end of a stopping cover; the press rod is respectively connected with the clamping ring and a stopping cap, and the lower end of the press rod is provided with a screw plug. The utility model has the advantages of simple structure and good sealing effect.
Description
The utility model belongs to the oil-field oil pumper well mouth sealing device.
At present, oilfield pumping well is general to be adopted by well head pumping to the sucker rod of down-hole, drive shaft bottom pump oil pumping, when oil flows to the well head place, oil in the pit shaft is because sealing is not good, oil in the pit shaft just overflows well head along with sucker rod pumps in the process, contaminated environment has been wasted a large amount of crude oil simultaneously, the sealing of oil-field oil pumper wellhead polish rod, correction is grease proofing key issue of overflowing, existing sealing device is varied, yet in use packing box is owing to be subjected to its structural limitations for said apparatus, and existence interpolation packing difficulty is big, problems such as packing is short application life, and sealing effectiveness is not good.
It is a kind of simple in structure, easy for installation that the purpose of this utility model is to provide, the combined type of the card certainly packing box of good sealing effect.
In order to achieve the above object, the technical solution adopted in the utility model is: close well head place is provided with and changes the ball seat that ball matches on sucker rod, box links to each other under the packing on changeing ball and being sleeved on sucker rod, sleeve is placed in to be changeed in the ball cavity, being sleeved on gland on the sucker rod matches with ball seat commentaries on classics ball bulb is pressed between ball seat and the gland, change ball top and be provided with the spring fastening that is sleeved on the sucker rod, the compression spring places the spring fastening upper end, several rectangular toothed latches place compression spring upper end to constitute snap ring and are connected on the depression bar outer wall that is sleeved on the sucker rod, be with hollow on the sucker rod and spin the shape stop lid that hangs down, be connected on the spring fastening and spin the shape snap ring outer wall that hangs down and match, depression bar respectively with snap ring, the stop cap is connected, and the depression bar lower end is provided with the screw plug that is nested with sucker rod.
The utility model has the advantages that:
Simple in structure, easy for installation, the utility model remains long bolt and moves downward packing in the compacting packing box, changed since the packing wearing and tearing when tailing off phenomenon such as seal failure leakage of oil produce, reduced pollution to environment, the utility model packing capacity increases, consolidation effect is good, and the packing single extended to more than 1 year by average about 30 days in the past application life, thereby improved the oil pumping rate of oil well, increased crude output.
Description of drawings:
Fig. 1 is the utility model structural representation.
Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.
As shown in Figure 1, the utility model is that close well head place is provided with and changes the ball seat 13 that ball 10 matches on sucker rod 14, box 4 links to each other under the packing on changeing ball 10 and being sleeved on sucker rod 14, sleeve 9 is placed in to be changeed in ball 10 cavitys, being sleeved on gland 11 on the sucker rod 14 matches with ball seat 13 commentaries on classics ball 10 bulbs is pressed between ball seat 13 and the gland 11, change ball 13 tops and be provided with the spring fastening 7 that is sleeved on the sucker rod 14, compression spring 5 places spring fastening 7 upper ends, several rectangular toothed latches 3 place compression spring 5 upper ends to constitute snap ring and are connected on depression bar 1 outer wall that is sleeved on the sucker rod 14, be with hollow on the sucker rod 14 and spin the shape stop lid 6 that hangs down, be connected spring fastening 7 loam cakes and spin the shape snap ring outer wall that hangs down and match, depression bar 1 respectively with snap ring, stop cap 2 is connected, and depression bar 1 lower end is provided with the screw plug 8 that is nested with sucker rod 14.
Be provided with sealing ring 12 between described ball seat 13 and the commentaries on classics ball 10.
Described sealing ring 12 middle parts have groove.
Operating principle of the present utility model:
This device is mainly used from lock construction element and is formed by revolving member, interpolation packing member, packing compacting, package unit has adopted three grades of hermetically-sealed constructions, the utility model is by the wear resistant nylon sealing ring between the ball seat of revolving member and the commentaries on classics ball, effect is that inner oil gas leaks outside when preventing the rotation of spline ball, secondary seal is the core, refers to be filled in the packing box and the packing between the sucker rod, prevents to be with when sucker rod from pumping oil, three grades of sealings are to adopt the hard connection of GB tubing products awl button, leakproof.
The ball seat of revolving member connects with right-handed thread with gland, changes ball and is installed in the rotating drum of being made up of ball seat and gland, and sealing ring is installed in connecting in the gap of ball seat and commentaries on classics ball.Therefore structure can make packing box freely rotate in the 3-15 degree, reaches the correction purpose of well head and oil pumper.
The sleeve of hermetic unit is installed in to be changeed in the ball lumen, spring fastening connects with right-handed thread with the commentaries on classics ball, the packing of secondary seal is filled in sleeve, change in the packing chamber of ball lumen and spring fastening composition, the depression bar that has a screw plug withstand on packing above, can increase packing with this structure and reach effective reduction length easily, prolong the service time of single packing.
The depression bar that compacting is used connects with right-handed thread with the screw plug of sealing usefulness, spring is installed on the spring fastening, latch is installed in above the spring, spring capping connects spring with right-handed thread with spring fastening, latch is limited in the cavity of being made up of spring capping and spring fastening, this part is the distinctive feature of this packing box design, and spring capping adopts the up-thin-low-thick cone nut of inner chamber, under the situation that is not subjected to external force, the elastic force of dependence spring makes on the latch and moves, bore diminishes, and tightly is stuck on the depression bar of compacting packing, make depression bar can not on scurry, when long pressure screw rod top is stressed, by latch spring is shunk, latch moves down, and it is big that bore becomes, latch separates with long bolt, depression bar moves down the compacting packing, and external force is removed, the spring elongation, the automatic locking depression bar is finished compacting process.The design's advantage is to remain long bolt to move downward the compacting packing, does not have the problem of the seal failure leakage of oil when reducing because packing weares and teares.
When the user received this packing box, it was that each parts has connected the integral body that finishes as shown in Figure 1.Take off and formerly using packing box this moment, loads onto this packing box and get final product.
When adding packing, open stop spiral shell 2 among the figure, this moment depression bar, stop cap can on move, be bundled on the anti-lost card of sucker rod with thin wire or cotton rope.Take out latch 3 and compression spring 4, the supporting packing that has processed is enclosed within on the sucker rod, push away downwards, till in the packing chamber, filling it up with.Be that the packing internal diameter is identical with the sucker rod footpath, otherwise will lose sealing effectiveness, put down spring, take off stop cap and depression bar, latch is placed on above the compression spring, tighten the stop spiral shell, start used for oil extractor half loudspeaker melon and be enclosed within on the sucker rod, when sucker rod during near bottom dead centre, half loudspeaker melon will contact with the polished rod eye that is connected sucker rod be subjected to downward active force, this moment, depression bar was stressed to move down, and promptly finishes the packing compacting process.Need not as existing packing box must take out residue packing when adding packing again next time, all adds again.Need only suitably replenish packing gets final product.
If after rod-pumped well work a period of time, the discovery sucker rod is with oil when upstroke, as long as depression bar also has distance on stop spiral shell top, press with the half melon to get final product.
If after adding packing, find that sucker rod is overheated or difficulty relatively when moving downward, it is real excessively illustrate that packing is pressed, and available pipe wrench prolonged counter clockwise direction and rotated long bolt this moment, can adjust the compacting elasticity of packing, reached the work optimum state.
Claims (3)
1, a kind of from blocking the combined type packing unit, form by sucker rod, it is characterized in that: close well head place is provided with and changes the ball seat (13) that ball (10) matches on sucker rod (14), box (4) links to each other under the packing on changeing ball (10) and being sleeved on sucker rod (14), sleeve (9) is placed in to be changeed in ball (10) cavity, being sleeved on gland (11) on the sucker rod (14) matches with ball seat (13) commentaries on classics ball (10) bulb is pressed between ball seat (13) and the gland (11), change ball (13) top and be provided with the spring fastening (7) that is sleeved on the sucker rod (14), compression spring (5) places spring fastening (7) upper end, several rectangular toothed latches (3) place compression spring (5) upper end to constitute snap ring and are connected on depression bar (1) outer wall that is sleeved on the sucker rod (14), be with hollow on the sucker rod (14) and spin the shape stop lid (6) that hangs down, be connected on the spring fastening (7) and spin the shape snap ring outer wall that hangs down and match, depression bar (1) respectively with snap ring, stop cap (2) is connected, and depression bar (1) lower end is provided with the screw plug (8) that is nested with sucker rod (14).
2, described according to claim 1 from blocking the combined type packing unit, it is characterized in that: be provided with sealing ring (12) between ball seat (13) and the commentaries on classics ball (10).
3, described from blocking the combined type packing unit according to claim 2, it is characterized in that: described sealing ring (12) middle part has groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00211379 CN2419368Y (en) | 2000-04-06 | 2000-04-06 | Self locked composite packing casing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00211379 CN2419368Y (en) | 2000-04-06 | 2000-04-06 | Self locked composite packing casing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2419368Y true CN2419368Y (en) | 2001-02-14 |
Family
ID=33578084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00211379 Expired - Fee Related CN2419368Y (en) | 2000-04-06 | 2000-04-06 | Self locked composite packing casing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2419368Y (en) |
-
2000
- 2000-04-06 CN CN 00211379 patent/CN2419368Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |