CN202731811U - Polished rod eccentric wear preventing sealing packing box for oil pumping well - Google Patents
Polished rod eccentric wear preventing sealing packing box for oil pumping well Download PDFInfo
- Publication number
- CN202731811U CN202731811U CN 201220257423 CN201220257423U CN202731811U CN 202731811 U CN202731811 U CN 202731811U CN 201220257423 CN201220257423 CN 201220257423 CN 201220257423 U CN201220257423 U CN 201220257423U CN 202731811 U CN202731811 U CN 202731811U
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- polished rod
- oil
- nylon
- sealing packing
- packing box
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Abstract
A polished rod eccentric wear preventing sealing packing box for an oil pumping well is applied to an oil pumping well mouth of an oil field for oil extraction. The sealing packing box for the oil pumping well polished rod eccentric wear preventing is characterized in that a separating wall is arranged on the middle portion of a cylinder-shaped shell body, and a central hole is arranged in the separating wall. An internal cylinder is arranged in a cylinder-shaped cavity body on the lower portion of the separating wall inside the shell body, and the diameter of the central hole of the upper end bottom of the internal cylinder is 2 mm to 5 mm bigger than the diameter of a polished rod. A secondary sealing packing is arranged in the internal cylinder. Eccentric adjusting screws are symmetrically arranged on the lower wall of the shell body. A first sealing packing is arranged in the cylinder-shaped cavity body on the upper portion of the separating wall inside the shell body, a nylon interlining is arranged on the upper portion of the upper plane of the first sealing packing, a pressing cap is sleeved on the external wall of the nylon interlining, and a gland is arranged on the upper plane of the pressing cap and the nylon interlining. The polished rod eccentric wear preventing sealing packing box for the oil pumping well has the advantages of solving the eccentric wear preventing problem between the oil pumping well polished rod and the packing box by the adjustment of the eccentric adjusting screw, reducing oil gas leakage of a well mouth, reducing environment pollution, and meanwhile reducing output loss caused by stop production of an oil well due to oil gas leakage.
Description
Technical field
The utility model relates to the oil field equipment technical field, and particularly a kind of mouth of pumped oil well polish rod seal packing kit is the anti-eccentric wear sealing packing box of a kind of pumping well polish rod, solves polished rod and packing box pressing cap eccentric wear problem, prolongs polished rod and packing box application life.
Background technology
At present, in the sucker rod pumping mode, the blowout prevention facility of production wellhead is comprised of rubber gate, packing box, packing, packing pressure cap, packing box outer press cover etc., utilizes the press seal of packing and polished rod to reach pumpingh well wellhead sealing in process of production.Packing is elastomeric material, and polished rod is ferrous materials, cooperates the lubrication of lubrication oil, can accomplish good wellhead sealing theoretically.But in actual production, polished rod not only with the packing friction, sometimes also with the packing pressure cap friction, because the two all is ferrous materials, be easy to cause the damage of the outer smooth surface of polished rod, affect the sealing effectiveness of polished rod and packing, cause the well head oil gas leakage, need to change polished rod during the polished rod well damage.Cause the reason of polished rod and packing pressure cap friction that the following aspects is arranged: the one, packing pressure cap causes pressure cap crooked when compressing the packing of quality of rubber materials, and then and polished rod friction; The 2nd, the loose ore deposit that the soil is porous owing to Gobi desert in running for oil pumper, oil pumper shakes, mechanical wear causes etc. causes the displacement of oil-extractor polish-rod polished rod eye, makes polished rod deflection and packing pressure cap friction.The Main Means that solves at present eccentric wear has two: the one, and the fixed adjustment oil pumper keeps polished rod placed in the middle as far as possible; The 2nd, utilize packing box fine setting jackscrew to adjust packing box and make packing pressure cap placed in the middle.From practical application effect, because the stability of oil pumper does not reach ideal, it is always placed in the middle that polished rod is difficult to keep.Because the continuous wearing and tearing of packing cause the continuous movement of packing pressure cap, make packing pressure cap can not keep center condition.Effect is all undesirable in actual applications for above two kinds of methods, so that the polished rod seal surface damage is serious, causes the well head oil gas leakage, causes oil well to stop production, and contaminated environment, the impact safety in production.Polished rod damages and need carry out oil well when serious and bleed off pressure, change polished rod, and labour intensity is large, cost for oil production raises.
The utility model content
The purpose of this utility model is: provide a kind of pumping well polish rod to prevent eccentric wear sealing packing box, solve the polished rod wear problem that causes because of the well head eccentric wear in the sucker rod pumping process.
The technical solution adopted in the utility model is: pumping well polish rod is prevented eccentric wear sealing packing box, comprise gland, connecting cylinder, pressure cap, nylon inner lining, housing, primary seal packing, inner core, tuningout screw and secondary seal packing, it is characterized in that: there is partition wall at the middle part in the tubular housing, partition wall has centre bore, and polished rod can pass from the centre bore of partition wall.In housing and in the circular cylindrical cavity of partition wall bottom an inner core is arranged, there is the end upper end of described inner core, and there is centre bore at the end of inner core upper end, and the center-hole diameter of bottom is greater than polished rod diameter 2～5mm on the inner core; The secondary seal packing is arranged in inner core; Symmetry has screw on the lower housing portion wall, is connected with the tuningout screw in screw, and the inner of tuningout screw withstands on the outer wall of inner core; Regulate the tuningout screw, can make inner core shift position in housing.In housing and in the circular cylindrical cavity on partition wall top, the primary seal packing is arranged; Nylon inner lining is arranged at the top, upper plane at the primary seal packing, and described nylon inner lining is comprised of two and half liners, the cylinder that it is taper that two and half liners consist of an outer wall relatively, and nylon inner lining has centre bore; Outer wall cover at nylon inner lining has a pressure cap, and described pressure cap has conical central hole; On the upper plane of pressure cap and nylon inner lining a gland is arranged, the outer wall of gland has screw thread, and the gland screw thread is fixed on the upper end of connecting cylinder, and gland has centre bore.
The beneficial effects of the utility model: the utility model pumping well polish rod is prevented eccentric wear sealing packing box, utilizes the levelling of tuningout screw, has solved oil-extractor polish-rod and packing box eccentric wear problem.Reduce the well head oil gas leakage, reduced environment pollution, reduced simultaneously the production loss that causes oil well to stop production and cause because of oil and gas leakage.
Description of drawings
Fig. 1 is the anti-eccentric wear sealing packing box structural profile schematic diagram of the utility model pumping well polish rod.
Among the figure, 1-gland, 2-connecting cylinder, 3-pressure cap, 4-nylon inner lining, 5-housing, 6-primary seal packing, 7-inner core, 8-tuningout screw, 9-secondary seal packing, 10-polished rod.
The specific embodiment
Embodiment 1: take the anti-eccentric wear sealing packing box of a pumping well polish rod as example, the utility model is described in further detail.
Consult Fig. 1.The utility model pumping well polish rod is prevented eccentric wear sealing packing box, comprises gland 1, connecting cylinder 2, pressure cap 3, nylon inner lining 4, housing 5, primary seal packing 6, inner core 7, tuningout screw 8 and secondary seal packing 9.
There is partition wall at tubular housing 5 interior middle parts, and it is the centre bore of 32mm that partition wall has diameter, and polished rod can pass from the centre bore of partition wall.In housing 5 and in the circular cylindrical cavity of partition wall bottom an inner core 7 is arranged, there is the end upper end of described inner core 7, and there is centre bore at the end of inner core 7 upper ends, and the center-hole diameter of bottom is greater than polished rod diameter 5mm on the inner core 7.Secondary seal packing 9 is arranged in inner core 7.Symmetry has screw on housing 5 lower part walls, is connected with tuningout screw 8 in screw, and the inner of tuningout screw 8 withstands on the outer wall of inner core 7; In housing 5 and in the circular cylindrical cavity on partition wall top, primary seal packing 6 is arranged.Nylon inner lining 4 is arranged at the top, upper plane at primary seal packing 6, and described nylon inner lining 4 is comprised of two and half liners, the cylinder that it is taper that two and half liners consist of an outer wall relatively, and nylon inner lining 4 has centre bore; Outer wall cover at nylon inner lining 4 has a pressure cap 3, and described pressure cap 3 has conical central hole; The tapering of the conical central hole of pressure cap 3 is identical with the tapering of nylon inner lining 4 outer walls.On the upper plane of pressure cap 3 and nylon inner lining 4 gland 1 is arranged, the outer wall of gland 1 has screw thread, and gland 1 screw thread is fixed on the upper end of connecting cylinder 2, and gland 1 has centre bore.There is screw thread the lower end of housing 5, can be connected with well head.Polished rod 10 passes the centre bore of partition wall, primary seal packing 6, nylon inner lining 4 and gland 1 of upper bottom, the housing 5 of secondary seal packing 9, inner core 7.
Claims (1)
1. a pumping well polish rod is prevented eccentric wear sealing packing box, comprise gland (1), connecting cylinder (2), pressure cap (3), nylon inner lining (4), housing (5), primary seal packing (6), inner core (7), tuningout screw (8) and secondary seal packing (9), it is characterized in that: there is partition wall at the middle part in the tubular housing (5), partition wall has centre bore, and polished rod can pass from the centre bore of partition wall; In housing (5) and in the circular cylindrical cavity of partition wall bottom, an inner core (7) is arranged, there is the end upper end of described inner core (7),, there is centre bore at the end of inner core (7) upper end, and the center-hole diameter of the upper bottom of inner core (7) is greater than polished rod diameter 2～5mm; Secondary seal packing (9) is arranged in inner core (7); Symmetry has screw on housing (5) lower part wall, is connected with tuningout screw (8) in screw, and the inner of tuningout screw (8) withstands on the outer wall of inner core (7); In housing (5) and in the circular cylindrical cavity on partition wall top, primary seal packing (6) is arranged; Nylon inner lining (4) is arranged at the top, upper plane at primary seal packing (6), and described nylon inner lining (4) is comprised of two and half liners, the cylinder that it is taper that two and half liners consist of an outer wall relatively, and nylon inner lining (4) has centre bore; Outer wall cover at nylon inner lining (4) has a pressure cap (3), and described pressure cap (3) has conical central hole; There is a gland (1) on upper plane at pressure cap (3) and nylon inner lining (4), and the outer wall of gland (1) has screw thread, and gland (1) screw thread is fixed on the upper end of connecting cylinder (2), and gland (1) has centre bore.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220257423 CN202731811U (en) | 2012-06-01 | 2012-06-01 | Polished rod eccentric wear preventing sealing packing box for oil pumping well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220257423 CN202731811U (en) | 2012-06-01 | 2012-06-01 | Polished rod eccentric wear preventing sealing packing box for oil pumping well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202731811U true CN202731811U (en) | 2013-02-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220257423 Expired - Fee Related CN202731811U (en) | 2012-06-01 | 2012-06-01 | Polished rod eccentric wear preventing sealing packing box for oil pumping well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202731811U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104963648A (en) * | 2015-08-01 | 2015-10-07 | 侯学林 | Multi-stage packing box for oil pumping unit |
-
2012
- 2012-06-01 CN CN 201220257423 patent/CN202731811U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104963648A (en) * | 2015-08-01 | 2015-10-07 | 侯学林 | Multi-stage packing box for oil pumping unit |
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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 |
Granted publication date: 20130213 Termination date: 20210601 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |