CN206144776U - Oil pump preventing gas - Google Patents

Abstract

The utility model belongs to the technical field of the oil production equipment, concretely relates to oil pump preventing gas. Including last pump barrel, lower pump barrel and long column stopper, the long column is equipped with circular cavity beyond the great wall, and the circular cavity top is fixed with the relief pressure valve, and the relief pressure valve includes that the disc valve body is stifled with the decompression rubber seal, is equipped with on the disc valve body to seal up stifled guiding hole, exhaust ring cavity and exhaust hole, and the decompression rubber seal is blocked up and is lain in sealed stifled guiding hole, is equipped with six separation blades of circumference equipartition in the exhaust ring cavity, the long column on exhaust hole top be equipped with the air guide hole beyond the great wall, air guide hole top is equipped with the cushion chamber, is equipped with four exhaust inclined holes of equipartition around the cushion chamber, be equipped with four inclined holes that admit air of equipartition on the circular cavity wall of relief pressure valve below, the exhaust inclined hole is the downward sloping with the inclined hole that admits air, and inclination is 45 degrees. The utility model has the advantages of simple structure, reasonable in design, safe and reliable raises the efficiency, and reduce cost can prevent the airlock.

Description

A gas-proof oil well pump

Technical field:

The utility model belongs to the technical field of oil production equipment, in particular to an air-proof oil well pump.

Background technique:

With the increase of oil field development time, the energy of the formation is continuously consumed, making the effect of natural energy to extract crude oil worse and worse, and it is necessary to artificially increase the formation energy to extract crude oil. Among them, the traditional nitrogen injection, carbon dioxide injection and recent developments The heavy oil air injection catalytic oxidation oil recovery technology has a relatively ideal application effect in the oil production field, which makes its application scope more and more extensive. However, its negative effect is also becoming more and more obvious, especially with the continuous increase of gas (steam) injection, the influence of gas (steam) on the oil pumping efficiency of the oil well pump is increasing. The phenomenon of air lock often occurs. Due to the existence of gas in the pump barrel, the floating valve at the lower part of the oil well pump will open with a delay during the downstroke, which seriously affects the working efficiency of the oil well pump. In addition, due to the large amount of oil produced by the oil well pump, the shock load acting on the sucker rod is relatively large when the oil well pump is switched between the bottom dead center and the top dead point during operation, making the sucker rod easy to break off. As a result, the daily maintenance workload in crude oil production increases, and the unit crude oil cost continues to increase. Therefore, it is very necessary to design a kind of anti-air pump.

Utility model content:

The utility model makes up for and improves the deficiencies of the above-mentioned prior art, and provides an anti-air oil pump with simple structure, reasonable design, safety and reliability, improved efficiency, reduced cost, and can prevent air lock, which can be used on a large scale promotion and use.

The technical solution adopted by the utility model is: an air-proof oil well pump, including an upper pump barrel, a lower pump barrel and a long plunger, a round cavity is arranged on the long plunger, a pressure reducing valve is fixed on the top of the circular cavity, and the pressure reducing valve It includes a disc valve body and a decompression rubber sealing plug. The disc valve body is provided with a sealing plug guide hole, an exhaust ring cavity and an exhaust hole. The decompression rubber seal plug is located in the seal plug guide hole and the exhaust ring cavity There are six baffles evenly distributed on the circumference; the long plunger at the top of the exhaust hole is provided with an air guide hole, the top of the air guide hole is provided with a buffer cavity, and four exhaust slopes are evenly distributed around the buffer cavity. Holes; four air intake oblique holes are evenly distributed on the wall of the circular cavity below the pressure reducing valve.

The sealing disc at the top of the decompression rubber sealing plug is located in the exhaust ring chamber below the baffle.

Both the exhaust slant hole and the air intake slant hole are inclined downward, and the inclination angle is 45 degrees.

The position of the upper circular chamber of the long plunger is in the pump chamber of the upper pump barrel.

The utility model has the beneficial effects of simple structure, reasonable design, safety and reliability, improved efficiency, reduced cost, can prevent air lock, and is easy to popularize and use on a large scale. When the long plunger repeatedly completes the up and down strokes, the air pressure in the pump chamber will gradually rise. When pumping oil on the up stroke, if the air pressure in the pump chamber is too high, the decompression rubber sealing plug will move upward, and the gas will pass through the sealing plug. The guide hole, the exhaust ring cavity, the gap between the baffles and the exhaust hole enter the air guide pipe, and then discharge through the exhaust inclined pipe to realize decompression; if the air pressure in the pump chamber is too low, the decompression rubber sealing plug will go down Move and lean against the end wall of the exhaust ring chamber to play a role of sealing.

Description of drawings:

Fig. 1 is a structural representation of the utility model.

Fig. 2 is a structural schematic diagram of the pressure reducing valve in the utility model.

Fig. 3 is a schematic diagram of the design position of the pressure reducing valve in the utility model.

detailed description:

Referring to the figures, a gas-proof oil well pump includes an upper pump barrel 9, a lower pump barrel 10 and a long plunger 2. The long plunger 2 is provided with a round cavity 6, and a pressure relief valve 1 is fixed on the top of the round cavity 6. The pressure reducing valve 1 comprises a disc valve body 102 and a decompression rubber sealing plug 105. The disc valve body 102 is provided with a sealing plug guide hole 106, an exhaust ring chamber 101 and an exhaust hole 104. The decompression rubber sealing plug 105 is located at In the sealing plug guide hole 106, six baffles 103 uniformly distributed on the circumference are arranged in the exhaust ring cavity 101; There is a buffer chamber 4, and four uniform exhaust oblique holes 5 are arranged around the buffer chamber 4; four air inlet oblique holes 7 are uniformly distributed on the wall of the round chamber 6 below the pressure reducing valve 1; The sealing disc at the top of the decompression rubber sealing plug 105 is located in the exhaust ring cavity 10 below the baffle 103; the exhaust inclined hole 5 and the intake inclined hole 7 are both inclined downward, and the inclination angle is 45 degrees; the position of the upper circular cavity 6 of the long plunger 2 is in the pump cavity 8 of the upper pump barrel 9 .

When the long plunger 2 repeatedly completes the up and down strokes, the air pressure in the pump chamber 8 will gradually rise. When pumping oil in the up stroke, if the air pressure in the pump chamber 8 is too high, the decompression rubber sealing plug 105 will move upwards. The gas enters the air guide pipe 3 through the gap between the sealing plug guide hole 106, the exhaust ring chamber 101, the baffle 103, and the exhaust hole 104, and then is discharged through the exhaust inclined pipe 5 to realize decompression; if the air pressure in the pump chamber 8 If it is too low, the decompression rubber sealing plug 105 will move downward and lean against the end wall of the exhaust ring chamber 101 to play a sealing role. The utility model is simple in structure, reasonable in design, safe and reliable, improves efficiency, reduces cost, can prevent air lock, and is easy to popularize and use on a large scale.

Claims (4)

1. An air-proof oil pump, comprising an upper pump barrel (9), a lower pump barrel (10) and a long plunger (2), characterized in that: the long plunger (2) is provided with a round cavity (6), A pressure reducing valve (1) is fixed on the top of the round cavity (6). The pressure reducing valve (1) includes a disc valve body (102) and a pressure reducing rubber sealing plug (105). The disc valve body (102) is provided with a seal Plugging guide hole (106), exhaust ring cavity (101) and exhaust hole (104), decompression rubber sealing plug (105) is located in the sealing plug guide hole (106), and exhaust ring cavity (101) is equipped with Six baffles (103) evenly distributed on the circumference; the long plunger (2) at the top of the exhaust hole (104) is provided with an air guide hole (3), and the top of the air guide hole (3) is provided with a buffer cavity (4 ), the buffer cavity (4) is equipped with four evenly distributed oblique exhaust holes (5); Oblique hole (7). 2. The air-proof oil well pump according to claim 1, characterized in that: the sealing disk at the top of the decompression rubber sealing plug (105) is located in the exhaust ring cavity (101) below the baffle (103) Inside. 3. An anti-air oil well pump according to claim 1, characterized in that: the exhaust slant hole (5) and the air intake slant hole (7) are both inclined downward, and the inclination angle is 45 degrees . 4. The anti-air oil well pump according to claim 1, characterized in that: the position of the upper round cavity (6) of the long plunger (2) is located in the pump cavity (8) of the upper pump cylinder (9) Inside.