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High temperature progressive cavity motor or pump component and method of fabrication

A component, screw-driven technology used in pumps, engine components, rotary piston pumps, etc.

Inactive Publication Date: 2013-09-11
PRAD RES & DEV LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As is known to the applicant, no attempt has been made to utilize a high glass transition temperature polymer or mixture of polymers to make the surface on any of these parts to allow the surface to become elastic only at operating temperature

Method used

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  • High temperature progressive cavity motor or pump component and method of fabrication
  • High temperature progressive cavity motor or pump component and method of fabrication
  • High temperature progressive cavity motor or pump component and method of fabrication

Examples

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Embodiment Construction

[0026] figure 1is a perspective view of the high temperature stator 20 of the present invention and shows a cross-sectional view of the stator body 10 showing the high temperature polymer coating providing helical grooves 41 through the longitudinal axis 40 of the body 10 . The stator tube 10 may be formed from a suitable steel pipe or other suitable material known in the screw motor manufacturing industry and cut to provide the final outer diameter and desired length of the stator assembly. Adhesives such as, but not limiting of, Cilbond 12E / 80E, Cilbond 33A / B, Chemosil 211 / , Chemosil 360, Chemosil NL411 with or without 211, Chemosil 512, Chemlok 207 / 6254, Chemlok 205 / 220, Sartomer interlayer TPU The compound is applied to the inner surface 22 of the stator 20 to attach the high temperature polymer or composite to the stator. In other cases, such an adhesive is not necessary because the polymer readily bonds to the surface. For example, epoxy resin bonds easily to steel. T...

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Abstract

The present application discloses a progressive cavity motor or pump component, either stator or rotor, which provides a high glass transition temperature polymeric surface on the component which becomes resilient at or below the expected operating temperature of the motor or pump, but which remains solid at ambient temperatures, along with a method of fabricating either a stator or a rotor with such surface characteristics. Since the surface becomes resilient, the progressive cavity pump operates efficiently at temperatures above the glass transition temperature of the selected polymeric surface.

Description

technical field [0001] The present invention relates to the manufacture and use of high temperature screw motor or pump components, and more particularly, the present invention relates to the provision of polymers having a glass transition temperature between 50°C and 180°C to allow hard polymers to become elastic while in operation. Manufacture and use of motors, or pumps, stators or rotors with polymeric surfaces that remain solid at relatively low temperatures. Background technique [0002] Many attempts have been made to coat the surfaces of screw motor components (stator and rotor) with polymers. As is known to the Applicant, no attempt has been made to make the surface on any of these parts using a high glass transition temperature polymer or mixture of polymers to allow the surface to become elastic only at operating temperatures. The operating efficiency of a screw motor requires that at least one surface of the motor be sufficiently resilient to repeatedly seal aga...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04C2/107
CPCF04C2/1073F04C2/1075F05C2225/00Y10T29/49242
Inventor 侯赛因·阿克巴里朱利恩·瑞梅尔奥利维·辛特
Owner PRAD RES & DEV LTD