Rack structure capable of saving lubricating oil for reciprocating pump

Abstract

The invention discloses a rack structure capable of saving lubricating oil for a reciprocating pump, and relates to the field of petroleum engineering equipment. The structure comprises a crankshaft cavity, a crosshead cavity, a crankshaft cavity bottom surface, a crosshead cavity bottom surface, a water precipitation cavity, a water outlet, an improved crankshaft cavity bottom surface, an improved crosshead cavity bottom surface and the like which are arranged in a rack. The water precipitation cavity of the crosshead cavity in the novel reciprocating pump rack is omitted, 30 liters of unnecessary lubricating oil is saved when a novel reciprocating pump is tested by a manufacturing enterprise and used by a user, the inclination of the improved crankshaft cavity bottom surface and the inclination of the improved crosshead cavity bottom surface in the rack are designed to be 2-3 degrees, and 10 liters of lubricating oil can be reduced by the manufacturing enterprise and the user; and new lubricating oil can be replaced by the novel reciprocating pump user more thoroughly, the service life of parts is prolonged, and the manufacturing cost of the manufacturing enterprise and the operating cost of the user are reduced.

Description

technical field [0001] The invention relates to the field of petroleum engineering equipment, in particular to a frame structure for a reciprocating pump that saves the amount of lubricating oil. Background technique [0002] Now a new type of reciprocating pump has appeared in the field of petroleum engineering equipment, which involves reciprocating pumps and fracturing pumps in the field of petroleum engineering equipment. The bearings between the crosshead pins have been changed from traditional rolling bearings to sliding bearings, which greatly reduces the size and weight of the original rolling bearing reciprocating pump, completely changing the traditional reciprocating pump that cannot work at rated power for a long time and overcoming the traditional reciprocating pump. Short life of parts and other quality improvements. However, due to the low speed and high pressure of this reciprocating pump, strict requirements are put forward for the lubricating oil. The tim...

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Problems solved by technology

However, due to the low speed and high pressure of this reciprocating pump, strict requirements are put forward for the lubricating oil. The time is short; the quality requirements of lubricating oil are very high, and the imported Mobil lubricating oil or Shell lubricating oil is required to have a high viscosity value, so the price is very expensive, and the expensive one costs more than 100 yuan / liter; There is a large amount of waste of lubricating oil. For example, before leaving the factory, a factory test must be carried out in the company. The experiment stipulates that the amount of lubricating oil added is 600 liters. The quantity is much less, at most 50 liters of lubricating oil will be needed, that is, 50 liters of lubricating oil will be consumed in one experiment, which is worth more than 5,000 yuan. It is also required that the number of lubricating oil experiments should not exceed 3 times, which increases the manufacturing cost; in the instruction manual The user is required to use a new reciprocating pump for the first time. The lubricating oil needs to be replaced after 1 month or 100 hours, and it needs to be replaced after 1000 hours or 3 months of normal operation. The amount of lubricating oil added each time is 600 liters, so the user It feels that the operating cost is high, which brings certain resistance to the promotion of this new type of reciprocating pump

[0003] There are many reasons for the large amount of lubricating oil. Among them, the design of the frame structure does not consider the requirement of saving lubricating oil, which makes the frame structure one of the reasons for wasting lubricating oil. Therefore, it is necessary to save the production cost of the reciprocating pump manufacturer and save the reciprocating In order to reduce the operating costs of pump users, it is an urgent problem to develop a frame structure for reciprocating pumps that saves the amount of lubricating oil.

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