Borehole Pump Sealing and Anchoring for Easy Replacement
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Solution Overview
Problem
Existing borehole pumps require complex deinstallation processes, making maintenance and replacement cumbersome, especially when anchored in riser pipes.
Innovation Solution
A borehole pump design featuring an eccentric screw pump with a stator and rotor housed in a special receiving housing, utilizing multiple sealing areas and anchoring elements for secure and detachable connections, allowing for easy installation and replacement without removing the riser pipe.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the progressive cavity pump is anchored in the riser pipe using a clamping mechanism, then the pump is securely held in position, but the deinstallation process becomes complex and time-consuming
Solution Approach 1:
The pump assembly is divided into separable components: the progressive cavity pump unit and the receiving housing with anchoring elements. The anchoring elements can be independently engaged or disengaged from the riser pipe, allowing the pump to be securely held during operation but easily removed when needed by simply disengaging the anchoring elements without complex deassembly procedures.
2Stability of the object's composition
If the pump is firmly anchored in the riser pipe, then stable operation is achieved, but maintenance requires complete removal of the pump system
Solution Approach 1:
The anchoring connection is designed to be dynamically changeable between two states: engaged for stable operation and disengaged for maintenance. The anchoring elements can be quickly transitioned between these states, providing operational stability when needed and easy maintenance accessibility when required, without requiring complete system removal.
3Device complexity
If a single sealing area is used in the receiving housing, then the structure is simple, but the pump cannot accommodate different stator lengths and materials
Solution Approach 1:
The receiving housing is designed with multiple sealing areas at different positions, making it universally adaptable to progressive cavity pumps with different stator lengths and materials. Each sealing area can accommodate different stator configurations, allowing the same receiving housing to serve multiple pump variants without modification, thereby increasing versatility while maintaining relatively simple structure.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables straightforward maintenance and replacement of borehole pumps by providing a secure yet detachable connection system, reducing the complexity of the deinstallation process and allowing for the use of different stator lengths and materials based on operational needs.
Implementation Method 1
The at least one rotor of the progressive cavity pump is mounted in an eccentric rotational position within the at least one stator of the progressive cavity pump
Implementation Method 2
When the one or more rotors are rotated eccentrically, pumping chambers are formed between the one or more rotors and the lining. These chambers move along the progressive cavity pump and move the respective medium
Implementation Method 3
The progressive cavity pump is arranged in the receiving housing such that the lower sealing arrangement of the progressive cavity pump is positively connected to the lower sealing area of the receiving housing; and that the upper sealing arrangement of the progressive cavity pump is positively connected to exactly one of the at least two upper sealing areas of the receiving housing
Data Source
Figure 1~1(E)
Figure 2~4
Figure 5~7
AI summary
The invention relates to a borehole pump (1) comprising an eccentric screw pump (2) with at least one stator (3) and at least one rotor (4). The eccentric screw pump (2) has, in its upper end region (5), in each case an upper sealing arrangement (6) and, in its lower end region (7), in each case a lower sealing arrangement (8). The borehole pump (1) comprises a receiving housing (10) having a lower sealing region (11) and at least two upper sealing regions (12-1, 12-2), wherein the eccentric screw pump (2) is arranged in the receiving housing (10) such that the lower sealing arrangement (8) of the eccentric screw pump (2) is assigned in a form- and/or force-fitting manner to the lower sealing region (11) of the receiving housing (10) and such that the upper sealing arrangement (6) of the eccentric screw pump (2) is assigned in a form- and/or force-fitting manner to one of the at least two upper sealing regions (12-1, 12-2) of the receiving housing (10). An installation procedure for installation at a lower end of a riser pipe and a replacement procedure for replacing a borehole pump arranged at a lower end of a riser pipe are also disclosed.