A simple detection device for the leakage between the pump barrel and the plunger and the tightness of the oil well pump

Abstract

The invention provides a simple detection device for leakage and sealing between a pump cylinder of an oil well pump and a plunger, and belongs to the technical field of oil field oil production equipment detection. An existing device is huge in size and high in manufacturing cost. According to the simple detection device, a check valve and a pressure gauge are installed on an oil outlet channel of a pressure testing pump in sequence, the oil outlet channel leads to a test bed, and four supporting columns, four fixing lugs of an upper end cover and four fixing lugs of a lower end cover are connected to form a pump cylinder fixing frame in the test bed; a circular sunken pit is formed in the lower portion of the upper end cover, and an upper clamp fixing hole with internal threads is located in the center of the circular sunken pit; an annular concave pit is formed in the upper portion of the lower end cover; a plunger plugging disk is arranged at the position close to the upper end of a long and thin threaded rod of an upper clamp, and a circular boss is arranged on the lower portion of the plunger plugging disk; a columnar platform is located on the upper portion of a lower clamp, a locating annular groove is formed in the lower portion of the lower clamp, and a through hole which is located in the center of the lower clamp and is provided with internal threads is an upper clamp and lower clamp connecting hole; the upper end of the long and thin threaded rod of the upper clamp is screwed into the upper clamp fixing hole, and the lower end of the long and thin threaded rod of the upper clamp is screwed into the upper clamp and lower clamp connecting hole; the upper portion of a locating sleeve is embedded into the locating annular groove.

Description

technical field [0001] The invention relates to a simple detection device for the leakage between the pump barrel and the plunger and the sealing performance of the oil well pump, which can determine the sealing degree of the oil well pump by measuring the amount of seepage oil and testing the drop of oil pressure, and is suitable for testing in the experimental places of universities and research institutes. The invention relates to the detection of leakage and sealing between the pump barrel and the plunger of the oil well pump. The detection device has the advantages of low cost, easy construction, space saving, accurate detection, etc., and belongs to the technical field of oil production equipment detection in oilfields. Background technique [0002] Mechanical oil recovery, referred to as mechanical recovery, is the main means of increasing production in oil fields, among which the use of rod well pumps is the most widely used mechanical recovery method. However, the e...

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Problems solved by technology

However, the efficiency of the existing oil well pump system is usually less than 30%, and the fluid production of the oil well drops rapidly due to wear and corrosion, and even short-term production shutdown

[0005] However, in the first prior art, the detection test bench is bulky, occupies a large area, and is expensive, and the loading and unloading of the oil well pump needs to be completed by a gantry crane or other large lifting equipment

Although this scheme meets the requirements of the testing standards, the initial design of the oil well pump is often carried out in the experimental sites of universities and research institutes, and the test bench is placed in the oil well pump manufacturer or the oil well pump professional testing organization. Therefore, the university 1. During the research and design process of the oil well pump, the research institute lacked detection devices in this area, and the research and design work could not be carried out normally.

[0006] However, the second prior art has complex structure and cumbersome operation. The use of electronically controlled automation equipment not only increases its cost, but also increases the workload of early stage debugging and post-maintenance.

Therefore, this scheme is not suitable for the detection of leakage and tightness in the early design stage of the oil well pump

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