Device for filtering sand-containing viscous liquid

A filter device and viscous liquid technology, applied in the components of pumping devices for elastic fluids, gravity filters, liquid fuel engines, etc., can solve the problems of pump wear, heavy crude oil obstruction, etc., and achieve the function of maintaining blocking Effect

Inactive Publication Date: 2010-03-03
WUHAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the filter holes of ordinary filter devices are generally circular (processed holes) and rectangular (woven holes) with similar length and width, and these holes are all straight cylindrical holes. The filter holes of this shape are useful for the passage of heavy crude oil. Greater resistance, that is, viscous crude oil is not

Method used

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  • Device for filtering sand-containing viscous liquid
  • Device for filtering sand-containing viscous liquid
  • Device for filtering sand-containing viscous liquid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A filter device for viscous liquids containing sand. The structure of the device is as figure 1 , figure 2 As shown, it consists of an upper joint 1, an inner filter cartridge 4, an outer filter cartridge 2 and a lower sleeve 3. The upper end and the lower end of the lower sleeve 3 are fixedly equipped with a middle joint 5 and a lower joint 6 respectively, and the ratio of the length K of the lower sleeve 3 to the length L of the inner filter cartridge 4 and the outer filter cartridge 2 is 1: (1.5~2) ; The lower joint 6 such as image 3 As shown, there are 41 small holes evenly arranged on the circular plane, and the middle joint is as follows figure 2 and Figure 4 Shown, be evenly provided with a circle of 20 apertures on the raised garden ring.

[0018] Such as figure 2 As shown, the two ends of the inner filter cartridge 4 are fixedly installed on the inner surface of the raised part of the upper joint 1 and the middle joint 5 respectively, and the two end...

Embodiment 2

[0022] A filter device for viscous liquids containing sand. The ratio of the length K of the lower sleeve 3 of the device to the length L of the inner filter cartridge 4 and the outer filter cartridge 2 is 1: (2.5 to 3), and 10 to 40 small holes are evenly arranged on the circular plane of the lower joint 6. Holes, a circle of 10 to 20 small holes is evenly arranged on the raised ring of the middle joint. The filter holes of the inner filter cartridge 4 and the outer filter cartridge 2 are grid-shaped holes with an aspect ratio of (50-200): 1, and the installation gap between the inner filter cartridge 4 and the outer filter cartridge 2 is 5-35mm, and the outer filter cartridge The filter hole width of 2 is 5-8mm, the filter hole width of the inner filter cartridge 4 is 0.75-2mm; the diameter of the small holes on the lower joint 6 and the middle joint 5 is 5-8mm.

[0023] Other parts of this embodiment are the same as Embodiment 1.

Embodiment 3

[0025] A filter device for viscous liquids containing sand. The ratio of the length K of the lower sleeve 3 of the device to the length L of the inner filter cartridge 4 and the outer filter cartridge 2 is 1: (2 to 2.5), and 41 to 100 small holes are evenly arranged on the circular plane of the lower joint 6. Holes, a circle of 21 to 50 small holes is evenly arranged on the raised ring of the middle joint. The filter holes of the inner filter cartridge 4 and the outer filter cartridge 2 are grid-shaped holes with an aspect ratio of (200-700): 1, and the installation gap between the inner filter cartridge 4 and the outer filter cartridge 2 is 75-105mm, and the outer filter cartridge The filter hole width of 2 is 8-10mm, the filter hole width of inner filter cartridge 4 is 2-3mm; the small hole diameter on the lower joint 6 and the middle joint 5 is 3-4mm.

[0026] Other parts of this embodiment are the same as Embodiment 1.

[0027] This specific embodiment utilizes the essen...

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Abstract

The invention relates to a device for filtering sand-containing viscous liquid. The invention adopts a technical scheme that a medium connector (5) and a lower connector (6) are fixed on the upper endand the lower end of a lower sleeve (3) respectively; a round plane of the lower connector (6) is provided with 10 to 100 pores; a raised ring of the medium connector is provided with a circle of 10to 50 pores; a proportion of the length K of the lower sleeve (3) and the length L of an inner cartridge filter (4) and an outer cartridge filter (2) is 1:(1.5-3); two ends of the inner cartridge filter (4) and the outer cartridge filter (2) are respectively fixed on the inner surface and the outer surface of raised parts of an upper connector (1) and the medium connector (5) with a mounting clearance of between 5 and 105mm; filter pores of the inner cartridge filter (4) and the outer cartridge filter (2) are grid-shaped pores with length-width ratio of (10-700):1; the shape of the cross section of the grid-shaped pore is in a flaring shape, wherein the larger end of the flaring shape is outward. The device can obviously reduce blocking effect of the filter pores on the viscous liquid, inparticular to crude oil, enables the viscous liquid to pass through the filter pores easily so as to achieve an oil-well pump, and simultaneously maintains the blockage effect on sands.

Description

technical field [0001] The invention belongs to a filtering device. Specifically relates to a filtering device for viscous liquid containing sand. Background technique [0002] Petroleum is divided into light crude oil, conventional crude oil and heavy crude oil. The extraction of heavy crude oil requires more pretreatment processes and greater energy, and the use of screw pumps is a better way to extract heavy crude oil. Heavy crude oil in many places contains a lot of grit. The grit contained in the heavy crude oil causes the screw pump to be subject to abrasive wear and seriously affects the pumping efficiency and working life of the screw pump. [0003] To solve this problem, installing a filter device at the oil suction end of the screw pump to prevent sand and gravel from entering the inside of the screw pump can reduce the wear of the pump. However, the filter holes of ordinary filter devices are generally circular (processed holes) and rectangular (woven holes) w...

Claims

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Application Information

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IPC IPC(8): F04B53/20B01D29/31
Inventor 谢剑刚李其祥姜繁智柏红学许宁
Owner WUHAN UNIV OF SCI & TECH
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