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Mechanical switch valve oil-well pump and oil pumping technology thereof

A technology of opening and closing valve and oil pump, which is used in mechanical equipment, liquid variable capacity machinery, pumps, etc., can solve the problems of reducing the fullness of the pump cavity, no sand control groove, and increased development cost, and achieves the effect of avoiding air lock.

Inactive Publication Date: 2013-06-05
严欢
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are two technically controversial issues about oil well pumps: one is whether the whole cylinder type oil well pump is better or the bushing type oil well pump is better; the other is whether it is better to have sand control grooves on the plunger or no sand control grooves
These gases occupy part of the volume of the pump chamber, which will reduce the fullness of the pump chamber, resulting in the lagging of the valve ball of the oil well pump, and even the phenomenon of "air lock"
"Hydraulic shock" also occurs during "air lock", causing vibration of the rod pumping system and accelerating its damage
As a result, pumping wells are frequently operated, shortening the pump inspection cycle, and increasing development costs

Method used

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  • Mechanical switch valve oil-well pump and oil pumping technology thereof

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Embodiment

[0029] The mechanical opening and closing valve oil well pump that the present invention relates to is as figure 1 As shown, it is mainly composed of a pump barrel 18, a valve stem 9 inside the pump barrel 18, and a plunger body provided with the lower end of the valve stem 9. The plunger body divides the inside of the pump barrel 18 into an upper chamber 13 and a lower chamber. Chamber 17.

[0030] The plunger body includes a hard plunger body 15 and a soft plunger body 16 .

[0031] The hard plunger body 15 is arranged on the upper part of the soft plunger body 16 .

[0032] A plunger oil outlet valve 14 is arranged above the plunger body.

[0033] The valve stem 9 is provided with an air release hole 6 .

[0034] The upper end of the valve rod 9 is connected with the oil pushing rod 1 through the disconnector 2 .

[0035] A push block 10 is arranged on the valve stem 9 .

[0036] The working principle of the present invention is: the oil outlet valve on the plunger is ...

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Abstract

The invention discloses a mechanical switch valve oil-well pump which is mainly composed of a pump cylinder (18), a valve rod (9) arranged in the pump cylinder (18), and a plunger arranged at the lower end of the valve rod (9). The plunger partitions the interior of the pump cylinder (18) into an upper cavity chamber (13) and a lower cavity chamber (17). The invention further discloses an oil pumping technology based on the mechanical switch valve oil-well pump. A pushing block and an air-bleed hole are arranged on the valve rod, a plunger delivery valve upper cavity and a plunger delivery valve lower cavity can be communicated when the plunger is close to a bottom dead center and reverses to ascend for a small section of distance, oil gas in the upper cavity chamber is exhausted into an oil tube in advance, and therefore 'airlock' is effectively prevented from happening.

Description

technical field [0001] The invention relates to a mechanical opening and closing valve oil pump and its oil pumping process. Background technique [0002] Before the 20th century, the development of oil well pump technology at home and abroad was slow, and it was not until the middle of the 20th century that the whole barrel oil well pump was studied and produced simultaneously with the bushing type oil well pump. There are two technically controversial issues about oil well pumps: one is whether the whole barrel type oil well pump is better or the bushing type oil well pump is better; the other is whether it is better to have sand control grooves on the plunger or not to have sand control grooves. Until the 1980s, due to the significant improvement of the pump efficiency of the whole barrel pump, it is generally about 10% higher than that of the bushing pump, which prolongs the service life of the plunger pump barrel pair, and can save about 40% of high-quality steel. Inst...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B47/00F04B53/06F04B53/00
Inventor 严欢
Owner 严欢
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