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Anchoring device of screw pump

A technology for anchors and screw pumps, applied to pumps, machines/engines, pumps with flexible working elements, etc., can solve the problem of no effective structure and function to prevent the stator barrel of screw pumps from rotating, and reduce pump inspection and maintenance The effect of operation, extended service life and reliable function

Active Publication Date: 2012-10-10
徐伟国 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Both of the above two patents have no anti-rotation structure and function to effectively prevent the rotation of the screw pump stator barrel

Method used

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  • Anchoring device of screw pump
  • Anchoring device of screw pump
  • Anchoring device of screw pump

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0018] The main body 10 is a stepped cylindrical shape with a through hole in the middle, and is assembled on the central tube 17 as an anchor base frame structure.

[0019] There are 2 to 3 track grooves 16 (determined by the size of the anchor) evenly distributed on the outer diameter surface of the central tube 17 .

[0020] Track groove 16 is made up of downhole track groove 16-1, setting sealing track groove 16-2 again, as Figure 5 shown.

[0021] The cross-sections at both ends of the central tube 17 are circular with through holes in the middle, and the cross-section of the middle part is a trilateral cam shape with through holes, and the length of the cam-shaped central tube is 2 to 2.5 times the length of the body 10, such as figure 1 , image 3 shown.

[0022] The upper part of the main body 10 is connected with the brace 5 with the positi...

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PUM

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Abstract

The invention relates to an anchoring device of a screw pump, comprising a clamping sleeve, a slip tooth, a central pipe and a righting block, wherein the central pipe is connected with a cone joint, a body and a lower joint, the righting block is provided with a righting spring, and a sleeve provided with a positioning pin bolt is matched with a track groove on the central pipe. The anchoring device of the screw pump also comprises a rotation preventing device, wherein the rotation preventing device comprises a radial anchoring mechanism and an axial anchoring mechanism. The axial anchoring mechanism is matched with the slip tooth by the cone joint, the radial anchoring mechanism is matched with the central pipe and a sleeve pipe by rotation preventing teeth which are matched with the righting block, uniformly distributed on the body and installed in a horizontal direction and is in interval distribution with the righting spring, and the section of a matching position of the central pipe is in a cam shape of which the middle is provided with a through hole. A rotation preventing function is added, right-angle anchoring linkage force generated by the anchoring device is combined with the torsional force of a sucker rod to enable axial and radial anchoring functions to be more steady, and the invention not only effectively inhibits superposition vibration during the running of a pump, but also has an up-and-down double-clamping safety function, thereby serious accidents caused by pump removal, pipe removal, identical-direction rotation and reverse rotation are fundamentallyeliminated and prohibited, the economic benefit is enhanced, and the construction and the operation are convenient.

Description

technical field [0001] The invention relates to a special equipment in the oil exploration and production industry, in particular to a screw pump anchor used for fixing a whole set of oil pumping devices in a casing. Background technique [0002] Most of the anchors currently used in the construction site still adopt the one-way slip compression type, which causes serious bending of the tubing, resulting in serious radial eccentric wear of the tubing and aggravated vibration. The anchor is not firm, and tripping often occurs. Maintenance Frequent pump inspection operations cannot meet the needs of large-displacement screw pump oil production. At the same time, anchors must be used to fix the stator barrel of the screw pump during the oil recovery process of the downhole screw pump to prevent the stator barrel from co-rotating during the operation of the screw pump. The reverse rotation of the stator barrel during the pump, if the stator barrel rotates at the same time, the s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B23/01F04B47/02
Inventor 徐伟国张春雷
Owner 徐伟国
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