CN202007642U - Wellhead sealing device for oil pumping unit - Google Patents

Wellhead sealing device for oil pumping unit Download PDF

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Publication number
CN202007642U
CN202007642U CN2011201319567U CN201120131956U CN202007642U CN 202007642 U CN202007642 U CN 202007642U CN 2011201319567 U CN2011201319567 U CN 2011201319567U CN 201120131956 U CN201120131956 U CN 201120131956U CN 202007642 U CN202007642 U CN 202007642U
Authority
CN
China
Prior art keywords
main
locking cap
hanging head
polished rod
rubber tube
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
Application number
CN2011201319567U
Other languages
Chinese (zh)
Inventor
陶桂林
Original Assignee
陶桂林
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 陶桂林 filed Critical 陶桂林
Priority to CN2011201319567U priority Critical patent/CN202007642U/en
Application granted granted Critical
Publication of CN202007642U publication Critical patent/CN202007642U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a wellhead sealing device for an oil pumping unit, which mainly solves the problems of big friction resistance and poor sealing effect of the existing wellhead sealing device. The wellhead sealing device is characterized in that an upper hanging head (2) is connected in a hoop short joint (1), and a rubber sleeve (3) is cured and connected outside the lower end of the upper hanging head (2); and a lower polished rod of the upper hanging head (2) is fixedly connected with a lower hanging head, the lower hanging head comprises a main body (5) and a locking cap (6), the outside of the upper part of the main body (5) takes a cone shape, at least one nick (7) is axially formed outside the upper part of the main body (5), the main body (5) is fixedly connected on a polished rod through a jack screw (8), the upper end of the locking cap (6) is provided with a cone hole, the locking cap (6) is sleeved on the polished rod, the lower end of the rubber sleeve (3) passes through the locking cap (6) to be arranged in a hole at the upper part of the main body (5), the locking cap (6) is fixedly connected with the upper end of the main body (5) through a screw thread, the rubber sleeve (3) takes a bellows shape, and machine oil is filled in the rubber sleeve (3). The wellhead sealing device for the oil pumping unit has the characteristics of small friction resistance and good sealing effect.

Description

The rod-pumped well mouth sealing device
Technical field:
The utility model relates to the used sealing device of oil pumper well head, especially rod-pumped well mouth sealing device in the oil recovery field, oil field.
Background technology:
In oil recovery field, oil field, the oil well pump that is used for artificial lift to have bar, bar and the well head sealing packing movable sealing modes that adopt more.This movable sealing mode influences oil recovery efficiency and cost because reasons in structure exists frictional resistance to reach the problem of sealing effectiveness difference greatly.
The utility model content:
In order to solve the problem that existing well mouth sealing device frictional resistance reaches the sealing effectiveness difference greatly.The utility model provides a kind of rod-pumped well mouth sealing device.This rod-pumped well mouth sealing device has the characteristics of the little and good sealing effect of frictional resistance.
The technical solution of the utility model is: this rod-pumped well mouth sealing device comprises the clip short circuit that the little four-way of well head upper end connects.The clip short circuit is interior goes up hanging head by being threaded, and solidifies on the stage outside the last hanging head lower end to be connected with rubber tube, and adds intrinsic insurance card at it; Be fixedly connected with down hanging head on the polished rod under the last hanging head, following hanging head comprises main body and locking cap, is taper outside the main body top, and axially has 1 gap at least, main body is enclosed within on the polished rod, and be fixedly connected on the polished rod by jackscrew, the locking cap upper end has bellmouth, locking cap to be enclosed within on the polished rod, the rubber tube lower end is passed locking cap and is placed in the main body upper hole, locking cap is fixedlyed connected with the main body upper end by screw thread, and rubber tube is a bellow-shaped, is marked with machine oil in the rubber tube.
The utlity model has following beneficial effect: this rod-pumped well mouth sealing device is owing to adopt in the clip short circuit by the upward hanging head that has been threaded, solidify on the stage outside the last hanging head lower end and be connected with rubber tube, be fixedly connected with down hanging head on the polished rod under the last hanging head, the rubber tube lower end is fixed on down on the hanging head, rubber tube is a bellow-shaped, is marked with the structure of machine oil in the rubber tube.Utilize the bellow-shaped rubber tube to be fixedly connected in the clip short circuit and polished rod on, in moving up and down process, polished rod do not have frictional resistance, eliminated friction, changed the movable sealing of conventional well head packing box root into static sealing, fundamentally solved the influence of well head sealing the oil pumper additional load.Because of utilizing the bellow-shaped rubber tube to stretch, well liquid is isolated in the well head again, and then improves good sealing effect with the polished rod motion; and simple in structure, with low cost, long service life; reduce the downtime of rod-pumped well, protected environment, improved the oil recovery well yield.This rod-pumped well mouth sealing device has the characteristics of the little and good sealing effect of frictional resistance thus.
Description of drawings:
Accompanying drawing 1 is a structural representation of the present utility model.
1-clip short circuit among the figure, the last hanging head of 2-, 3-rubber tube, 4-insurance card, 5-main body, 6-locking cap, 7-gap, 8-jackscrew.
The specific embodiment:
The utility model is described in further detail below in conjunction with accompanying drawing:
By shown in Figure 1, this rod-pumped well mouth sealing device comprises the clip short circuit 1 that the little four-way of well head upper end connects.Clip short circuit 1 is interior by the upward hanging head 2 that has been threaded, and solidifies on the stage outside last hanging head 2 lower ends to be connected with rubber tube 3, and adds intrinsic insurance card 4 at it, and rubber tube 3 is hollow, strengthens the bonding strength of rubber tube 3 and last hanging head 2; Be fixedly connected with down hanging head on 2 times polished rods of last hanging head, following hanging head comprises main body 5 and locking cap 6, be taper outside main body 5 tops, and axially has 1 gap 7 at least, can produce to internal strain by taper and gap 7, clamp rubber tube 3 and polished rod, main body 5 is enclosed within on the polished rod, and be fixedly connected on the polished rod by jackscrew 8, make by jackscrew 8 and to fixedly connected reinforcement between main body 5 and polished rod, there is bellmouth locking cap 6 upper ends, by the taper outside bellmouth extruding main body 5 tops, main body 5 tapers and gap 7 can be produced to internal strain, make rubber tube 3 be clamped in polished rod.Locking cap 6 is enclosed within on the polished rod, rubber tube 3 lower ends are passed locking cap 6 and are placed in main body 5 upper holes, locking cap 6 is fixedlyed connected with main body 5 upper ends by screw thread, rubber tube 3 is that bellow-shaped is scalable, be marked with machine oil in the rubber tube 3, machine oil is used for balanced seal tube force-bearing situation, prolongs the application life of rubber tube 3.

Claims (1)

1. rod-pumped well mouth sealing device, comprise the clip short circuit (1) that the little four-way of well head upper end connects, it is characterized in that: the interior hanging head (2) of going up by being threaded of clip short circuit (1), solidify on the stage outside last hanging head (2) lower end and be connected with rubber tube (3), and add intrinsic insurance card (4) at it; Last hanging head (2) is fixedly connected with down hanging head on the polished rod down, following hanging head comprises main body (5) and locking cap (6), be taper outside main body (5) top, and axially has 1 gap (7) at least, main body (5) is enclosed within on the polished rod, and be fixedly connected on the polished rod by jackscrew (8), there is bellmouth locking cap (6) upper end, locking cap (6) is enclosed within on the polished rod, rubber tube (3) lower end is passed locking cap (6) and is placed in main body (5) upper hole, locking cap (6) is fixedlyed connected with main body (5) upper end by screw thread, and rubber tube (3) is a bellow-shaped, and rubber tube is marked with machine oil in (3).
CN2011201319567U 2011-04-28 2011-04-28 Wellhead sealing device for oil pumping unit Expired - Fee Related CN202007642U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011201319567U CN202007642U (en) 2011-04-28 2011-04-28 Wellhead sealing device for oil pumping unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011201319567U CN202007642U (en) 2011-04-28 2011-04-28 Wellhead sealing device for oil pumping unit

Publications (1)

Publication Number Publication Date
CN202007642U true CN202007642U (en) 2011-10-12

Family

ID=44749300

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011201319567U Expired - Fee Related CN202007642U (en) 2011-04-28 2011-04-28 Wellhead sealing device for oil pumping unit

Country Status (1)

Country Link
CN (1) CN202007642U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104179471A (en) * 2013-05-22 2014-12-03 西安海枫机电科技有限公司 Flexible leak-free supercharged wellhead device
CN104454477A (en) * 2014-12-04 2015-03-25 中国石油天然气股份有限公司 Sealing device for electric submersible reciprocating pump oil-production system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104179471A (en) * 2013-05-22 2014-12-03 西安海枫机电科技有限公司 Flexible leak-free supercharged wellhead device
CN104454477A (en) * 2014-12-04 2015-03-25 中国石油天然气股份有限公司 Sealing device for electric submersible reciprocating pump oil-production system

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20111012

Termination date: 20120428