CN2245679Y

CN2245679Y - Sealing anchor for rod pump

Info

Publication number: CN2245679Y
Application number: CN 95208970
Authority: CN
Inventors: 陈瑞祥; 齐天喜; 姚建设; 蒋理
Original assignee: OIL FIELD TECHNOLOGY INST XINJ
Current assignee: OIL FIELD TECHNOLOGY INST XINJ
Priority date: 1995-04-19
Filing date: 1995-04-19
Publication date: 1997-01-22
Anticipated expiration: 2005-04-19

Abstract

The utility model relates to a sealing anchoring device for a rod type pump used for mechanical oil extraction of an oil field, comprising a supporting mandrel (1), a fixing connecting head (4), an outer working cylinder (5), etc. The outer working cylinder (5) and the supporting mandrel (1) are in tight fit. The upper ends of the outer working cylinder (5) and the supporting mandrel (1) are sealed by adopting conical surfaces, a seal assembly (2) is sheathed between the outer working cylinder (5) and the supporting mandrel (1), and thereby, the seal assembly (2) plays a sealed function. Two end surfaces of a clamping spring (3) are provided with chamfer angles, the clamping spring (3) is sheathed on the supporting mandrel (1) to be corresponding to a clamping spring groove on the middle part of the outer working cylinder (5), thereby, the clamping spring (3) and the clamping spring groove are fixed into an integral body, and further, a pump cylinder which is connected with the sealing anchoring device for a rod type pump used for mechanical oil extraction of an oil field plays an anchoring function.

Description

A kind of sucker rod pump seal anchor

The utility model relates to the sucker rod pump seal anchor that a kind of mechanical producing well is used.

At present, in the oil field machinery oil process, the seal anchor of employed sucker rod pump all relies on the spring detent locking, and its external diameter is big, and foul is arranged in the oil pipe slightly, with regard to method pump is proposed during oil well inspection pump; The sealing device only relies on a conical surface sealing in addition, meets foreign material (such as sand) slightly, can't accomplish that just sealing is reliable.

It is a kind of simple in structure that the purpose of this utility model is to provide, and carries seat easily, the reliable sucker rod pump seal anchor of sealing grappling.

The utility model is by supporting mandrel (1), fixed connector (4) and outer working tube compositions such as (5), it is waited to levy and is that the seal assembly of being made up of metal construction and sealing material (2) is sleeved in the supporting mandrel (1), on the jump ring (3), be processed with chamfering on the excircle of following both ends of the surface, and be sleeved on the bottom of supporting mandrel (1), fixing by fixed connector (4), outer working tube (5) closely cooperates with supporting mandrel (1), both adopt conical surface seal in the upper end, the middle part of outer working tube (5) is provided with and the corresponding jump ring groove of jump ring (3), and is fixed into one by jump ring (3) with supporting mandrel (1).

The utility model has the advantages that the sealing grappling is reliable, it is easy and simple in structure to carry seat.

Accompanying drawing is the utility model erection drawing.

The utility model is further specified as follows below in conjunction with drawings and Examples:

The utility model comprises supporting mandrel (1), fixed connector (4) and outer working tube (5) etc., and the two ends of outer working tube (5) link to each other with oil pipe respectively, and supporting mandrel (1) upper end links to each other with the stem guiding device, and the lower end is adopted with fixed connector (4) and is threaded; The seal assembly of being made up of metal construction or sealing material (2) is sleeved in the supporting mandrel (1), and jump ring (3) is sleeved on the bottom of supporting mandrel (1), and fixing by fixed connector (4), is processed with chamfering on jump ring (3) the upper/lower terminal face excircle; Outer working tube (5) closely cooperates with supporting mandrel (1), and both adopt conical surface seal in the upper end, and the seal assembly (2) in conjunction with the middle part is further strengthened sealability; Outer working tube (5) middle part has and the corresponding jump ring groove of jump ring (3), and the outer rim of this groove is processed with corresponding chamfering, thereby make outer working tube (5) be fixed into one with supporting mandrel (1), and then fixed connector (4) pump barrel that the lower end connected is played the grappling effect by jump ring (3).Optimum chamfering is 20 ° on the excircle of jump ring (3) two ends, and the seal form of seal assembly (2) can adopt leather cup, one group of rubber ring or metal ring etc.

Claims

1. the sucker rod pump sealing locking device used of an oil field machinery oil, comprise supporting mandrel (1), fixedly connected head (4) and outer working tube (5), the lower end of its supporting mandrel (1) is adopted with fixed connector (4) and is threaded, it is characterized in that the seal assembly of being made up of metal construction and sealing material (2) is sleeved in the supporting mandrel (1), on the jump ring (3), be processed with chamfering on the excircle of following both ends of the surface, and be sleeved on the bottom of supporting mandrel (1), fixing by fixed connector (4), outer working tube (5) closely cooperates with supporting mandrel (1), both adopt conical surface seal in the upper end, the middle part of outer working tube (5) is provided with and the corresponding jump ring groove of jump ring (3), and is fixed into one by jump ring (3) with supporting mandrel (1).

2. sucker rod pump seal anchor according to claim 1 is characterized in that the chamfering on jump ring (3) the upper/lower terminal face excircle is 20 °.

3. sucker rod pump seal anchor according to claim 1 and 2, the seal form that it is characterized in that seal assembly (2) are leather cup, one group of rubber ring or metal ring.