Pinion Rack Oil Pumping Unit for Deep Well Efficiency
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing oil pumping units, such as beam and endless rack pumping units, face challenges with low energy transmission efficiency, complex structures, poor force bearing performance, and the need for a high machine body to achieve long strokes, which increases equipment costs and complicates deep or extra-deep well oil extraction.
Innovation Solution
An oil pumping unit with a pinion reciprocating on a rack, featuring a base, housing, crown block, steel wire rope, motor, reducer, pinion, and rack, where the pinion is engaged with the rack to drive a reciprocating frame and pendulous frame, connected via a steel wire rope and balance-weight box, allowing for efficient and reliable operation with reduced equipment height.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If beam pumping unit is used, then operational reliability is improved, but energy transmission efficiency deteriorates
Solution Approach 1:
The patent replaces the traditional beam mechanical system with a rack and pinion mechanism. The pinion reciprocates along the rack, directly driving the pumping action without the intermediate beam structure. This substitution eliminates the energy losses associated with the beam system while maintaining operational reliability through the direct mechanical engagement of the pinion-rack interface.
2Length of moving object
If endless rack pumping unit with long stroke is used, then stroke length is improved, but machine body height increases
Solution Approach 1:
The patent changes the spatial arrangement from a vertical endless rack system to a horizontal rack with a reciprocating pinion. The rack extends horizontally rather than vertically, allowing the pinion to reciprocate along its length. This dimensional change enables long stroke operation without increasing machine body height, as the stroke is achieved through horizontal pinion movement rather than vertical rack extension.
Solution Approach 2:
The pinion is designed to reciprocate dynamically along the fixed rack, rather than having a fixed mounting position. This dynamic arrangement allows the pinion to move back and forth along the horizontal rack, achieving long stroke lengths while the machine body remains compact in height. The reciprocating motion is guided by the rack's horizontal orientation.
3Device complexity
If chain pumping unit is used, then structure complexity is reduced, but force bearing performance deteriorates
Solution Approach 1:
The patent replaces the chain drive system with a rack and pinion mechanism. The pinion engages directly with the rack teeth, providing positive mechanical engagement that superiorly transmits force compared to chain drives. This substitution maintains structural simplicity while dramatically improving force bearing performance through the direct tooth-to-tooth contact of the gear mechanism.
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
The solution provides a reliable, cost-effective, and efficient means to achieve long strokes, improving productivity and reducing equipment costs by simplifying the structure and enhancing the operational reliability of oil pumping units for deep or extra-deep wells.
Implementation Method 1
an oil pumping unit with pinion reciprocating on rack, comprises a base, a housing, a crown block, a steel wire rope, a motor, a reducer, a pinion and a rack. Wherein, a rack seat is fixed on the inner sides of the front portion of the housing, and the rack is secured on the rack seat, with the upper and lower portions thereof being both semicircular
Implementation Method 2
The steel wire rope passes through the sheaves of the rear portion connects to a balance-weight box arranged outside the housing
Implementation Method 3
Crown block are mounted on the upper portion of the housing, wherein two (2) double-groove sheaves or single-groove sheaves are arranged in the front portion
Implementation Method 4
a motor, a reducer, a pinion and a rack
Implementation Method 5
a motor, a reducer, a pinion and a rack
Implementation Method 6
The steel wire rope passes through the sheaves of the rear portion connects to a balance-weight box arranged outside the housing
Data Source
AI summary
An oil pumping unit with pinion reciprocating on rack has a base, a housing, crown block, a steel wire rope, a motor, a reducer, a pinion, and a rack. Rack seats are fixed on the inner sides of the front portion of the housing and the rack is secured on the rack seats. The two inner sides of the housing are guiding rails for the reciprocating frame. At each of the four corners of the reciprocating frame, a horizontal guiding wheel and a longitudinal guiding wheel are mounted, connecting to a pendulous frame via a hinge. The rear interior portion of the housing has a power cable box mounted, in the middle of which is an opening. Shelves are mounted on the upper portion of the housing. The steel wire rope (5) passes through the shelves.