CN207080345U - A sealed energy-saving oil production pump - Google Patents

Abstract

It the utility model is related to a kind of packing formula energy saving oil extraction pump, including pump barrel, hollow plunger and packer；The bottom of pump barrel is provided with fixed check valve；Packer is arranged in pump barrel and is fixedly connected with pump barrel；Hollow plunger fixes the bottom for being set in hollow rod；Hollow rod is inserted in packer and is slidably connected with packer；Hollow plunger is inserted in pump barrel and is slidably connected with pump barrel；Travelling check valve is provided with hollow rod.At work, hollow rod is lifted up and drives the synchronous motion upwards of hollow plunger by oil pumper, production fluid is sucked in the working chamber between hollow plunger and fixed check valve, oil pumper only needs to provide the power pulled required for hollow plunger and hollow rod, the power required for suction production fluid need not be provided, which saves a big chunk energy；Then only the production fluid in working chamber can be sent into oil pipe by the through hole in hollow plunger, hollow rod by the gravity of sucker rod.

Description

A sealed energy-saving oil production pump

technical field

The utility model relates to the technical field of oil pumping, in particular to a sealed energy-saving oil recovery pump.

Background technique

Traditional rod-type oil extraction pumps are generally used in oil extraction operations at the present stage. This pump has the characteristics of simple structure, convenient installation, and long service life.

The traditional rod type oil production pump does work when it goes up, but does not do work when it goes down. That is, when the plunger goes up, the plunger directly sends the production fluid to the ground. For the work stroke, the force it has to overcome is the sum of the pressure of the production fluid on the plunger and the gravity of the sucker rod. The power of the pumping unit that needs to be equipped is relatively large Large; when the plunger goes down, the production fluid is sent to the tubing, and the traditional rod well pump does not have the energy-saving function because of the non-working stroke.

Utility model content

The technical problem to be solved by the utility model is to provide an oil extraction pump with energy-saving function when extracting the same amount of oil.

The technical solution of the utility model for solving the above-mentioned technical problems is as follows: a sealed energy-saving oil production pump, including a pump barrel, a hollow plunger, a hollow sucker rod and a packer; the bottom end of the pump barrel is provided with a fixed one-way The top end of the pump barrel is connected to the oil pipe; the packer is set in the pump barrel and fixedly connected with the pump barrel or the packer is set in the oil pipe and fixedly connected with the oil pipe The hollow plunger is fixedly sleeved at the bottom end of the hollow sucker rod; the hollow sucker rod is inserted into the packer and is slidably connected with the packer; the hollow plunger is inserted into the In the pump barrel and slidingly connected with the pump barrel; a floating check valve is arranged in the hollow sucker rod, and a liquid discharge port is arranged at the top of the hollow sucker rod.

The beneficial effect of the utility model is: when working, the pumping unit lifts up the hollow sucker rod and drives the hollow plunger to move upward synchronously, sucking the produced liquid into the working chamber between the hollow plunger and the fixed one-way valve , since the compression cavity formed between the packer and the hollow plunger blocks the force of the produced fluid on the hollow plunger, the pumping unit only needs to provide the pulling sucker rod (the hollow sucker rod and the The power required by the solid sucker rod at the top of the rod) does not require the power required to lift the produced fluid, which saves a large part of energy; and then the hollow sucker rod, hollow plunger The production fluid in the working chamber can be sent into the oil pipe through the through hole in the hollow plunger and the hollow sucker rod by moving downward. On the basis of the above technical solutions, the utility model can also be improved as follows.

Further, a breathing hole is also included, and the breathing hole is arranged on the pump barrel to communicate with the outside world and the cavity between the packer and the hollow plunger in the pump barrel.

The beneficial effect of adopting the above further scheme is that when the hollow plunger and the hollow sucker rod move upward, the air between the packer and the hollow plunger will be compressed, and a breathing hole is provided to reduce the resistance caused by the compressed air. This reduces the lifting power of the pumping unit.

Further, it also includes a lower anti-shock and shock-absorbing sleeve, the lower anti-shock and shock-absorbing sleeve is arranged in the pump barrel, is sleeved on the hollow sucker rod, and is in close contact with the upper surface of the hollow plunger.

Further, it also includes an upper anti-shock and shock-absorbing sleeve, the upper anti-shock and shock-absorbing sleeve is arranged in the pump barrel, is sleeved on the hollow sucker rod, and is in close contact with the upper surface of the packer.

Description of drawings

Fig. 1 is a structural schematic diagram of an enclosed energy-saving oil production pump of the present invention.

In the accompanying drawings, the list of parts represented by each label is as follows:

1. Pump barrel, 2. Hollow plunger, 3. Hollow sucker rod, 4. Packer, 5. Fixed check valve, 6. Swimming check valve, 7. Breathing hole, 8. Lower shock resistance Shock sleeve, 9, upper shock-resistant and shock-absorbing sleeve, 10, working chamber, 11, compression chamber, 12, pump barrel oil pipe coupling, 13, drain port, 14, oil pipe.

Detailed ways

The principles and features of the present utility model are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the utility model, and are not used to limit the scope of the utility model.

As shown in Figure 1, a pack-type energy-saving oil production pump includes a pump barrel 1, a hollow plunger 2, a hollow sucker rod 3 and a packer 4. The pump barrel 1 is a cylindrical structure and is vertically arranged. The bottom end is provided with a fixed one-way valve 5, and the top end of the pump cylinder 1 is connected with an oil pipe 14.

The hollow plunger 2 is cylindrical and has a through hole along its central axis; the hollow plunger 2 is arranged in the pump barrel 1 and is slidably connected with the pump barrel 1 (the hollow plunger 2 can slide up and down in the pump barrel 1 ). The length of the hollow plunger 2 is much shorter than the length of the pump cylinder 1 (the lengths here all refer to the length in the axial direction).

The hollow sucker rod 3 is also cylindrical, and a through hole is arranged along its central axis; the bottom end of the hollow sucker rod 3 is inserted into the through hole of the hollow plunger 2 and fixedly connected with the hollow plunger 2, and the hollow sucker rod 3 When moving up and down, the hollow plunger 2 can be driven to move up and down synchronously. In the through hole in the hollow sucker rod 3 and near the bottom end of the hollow sucker rod 3 , a floating check valve 6 is arranged. The top end of the hollow sucker rod 3 is provided with a drain port 13 . (the sum of the length of the hollow sucker rod 3 and the length of the hollow plunger 2 is longer than the length of the pump barrel 1, and the length here all refers to the length in the axial direction).

A working chamber 10 is formed between the stationary non-return valve 5 and the hollow plunger 2 .

The shape of the packer 4 is the same as that of the hollow plunger 2, and the packer 4 is set on the top end of the pump barrel 1 and is fixedly connected with the pump barrel 1, or the packer 4 can also be set in the tubing 14 and fixed with the tubing 14 connect.

The hollow sucker rod 3 passes through the through hole on the packer 4, and can slide up and down in this through hole.

A compression chamber 11 is formed between the packer 4 and the hollow plunger 2 .

The material of the packer 4 is wear-resistant and sealing material. It can be tin bronze, polyurethane, etc.

The pump barrel oil pipe coupling 12 is also a cylindrical structure, which is provided with internal threads; and the top of the pump barrel 1 is provided with external threads that are compatible with this internal thread, and the pump barrel is connected by the engagement of the internal thread and the external thread. The oil pipe collar 12 is connected to the top of the pump cylinder 1 .

When working, the pumping unit lifts up the hollow sucker rod 3 and drives the hollow plunger 2 to move upward synchronously, sucking the produced fluid into the working chamber 10 between the hollow plunger 2 and the fixed one-way valve 5, and pumping oil. The engine only needs to provide the power required to pull the sucker rod, and does not need the power required to lift the produced fluid, which saves a large part of energy; then the hollow sucker rod and hollow plunger The downward movement can send the production fluid in the working chamber 10 into the oil pipe through the through hole in the hollow sucker rod 3 .

The enclosed type energy-saving oil production pump disclosed by the utility model has no pressure effect on the hollow plunger when the output fluid is moving upwards. At this time, the suspension point load of the ground pumping unit is the weight of the sucker rod, which saves the impact of the pumping unit on the production. The work done by the liquid weight, and the energy-saving effect should be determined according to the specific working conditions. Commonly used pump specifications are: 32, 38, 44, 57, 70 pumps. Commonly used sucker rod specifications are: 16, 19, 22, 25. The energy saving calculation formula is as follows:

Among them, S1 represents the cross-sectional area of the oil production pump, unit: square meter. S2 represents the cross-sectional area of the sucker rod, unit: square meter. H means the depth of hanging pump, unit: meter. d represents the specific gravity of the produced fluid, unit: 1000Kg/m3. V represents the running speed of the plunger, unit: m/s. 75 is the power conversion factor. 0.735 is the horsepower and kilowatt conversion factor. V=Q/24×3600×S1, where Q represents the daily displacement, unit: cubic meter/day. KW means energy-saving power, unit: kilowatt.

For ease of calculation and intuitive energy-saving effect, it is assumed that the depth of the pump is 1000 meters, the daily output is 50 cubic meters, the diameter of the sucker rod is 22 mm, and the specific gravity of the output fluid is 1000Kg/cubic meter. The energy saving of oil production pumps of five specifications is as follows:

The energy saving of installed power is the theoretical energy saving. For example, the depth of 32 pumps is 1000 meters, the daily output is 50 cubic meters, the diameter of the sucker rod is 22 mm, the counterweight of the pumping unit is 5:4, and the original equipment installed power is 15KW. After using the enclosed type energy-saving oil production pump disclosed in the utility model instead, the installed power can be reduced by 6.3KW from the original installed power, and the power of 10KW can be equipped in consideration of the frictional resistance factor. For example, the depth of the 70 pump is 1000 meters, the daily output is 50 cubic meters, the diameter of the sucker rod is 22 mm, the counterweight of the pumping unit is 5:4, and the original installed power is 12KW. After using the enclosed type energy-saving oil production pump disclosed by the utility model instead, the installed power can be reduced by 10KW from the original installed power, and the power of 3KW can be equipped in consideration of the frictional resistance factor.

In another embodiment, a breathing hole 7 is also included, and the breathing hole 7 is provided on the pump cylinder 1 to communicate with the cavity between the packer 4 and the hollow plunger 2 in the pump cylinder 1 body and the outside world.

The cavity between the packer 4 in the pump cylinder 1 and the hollow plunger 2 is the compression chamber 11, and the breathing hole 7 is a through hole provided on the pump cylinder 1, communicating the compression chamber 11 with the outside world. Breathing hole 7 can be a through hole, also can be made up of a plurality of through holes.

Further, it also includes a lower anti-shock and shock-absorbing sleeve, the lower anti-shock and shock-absorbing sleeve is arranged in the pump barrel, is sleeved on the hollow sucker rod, and is in close contact with the upper surface of the hollow plunger.

Further, it also includes an upper shock-resistant and shock-absorbing sleeve, the upper shock-resistant and shock-absorbing sleeve is arranged in the pump barrel, is sleeved on the hollow sucker rod, and is in close contact with the upper surface of the packer 4 .

The lower shock-resistant and shock-absorbing sleeve 8 and the upper shock-resistant and shock-absorbing sleeve 9 are made of elastic material, such as rubber.

In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial" The orientation or positional relationship indicated by , "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying the referred device Or elements must have a specific orientation, be constructed and operate in a specific orientation, and thus should not be construed as limiting the invention.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

In this utility model, unless otherwise specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrated; may be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediary, and may be an internal communication between two elements or an interactive relationship between two elements, unless otherwise stated Clearly defined. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model according to specific situations.

In the present invention, unless otherwise clearly specified and limited, the first feature may be in direct contact with the first feature or the first feature and the second feature through an intermediary if the first feature is "on" or "under" the second feature indirect contact. Moreover, "above", "above" and "above" the first feature on the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. "Below", "beneath" and "beneath" the first feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is less horizontally than the second feature.

In the description of this specification, descriptions with reference to the terms "one embodiment", "some embodiments", "example", "specific examples", or "some examples" mean that specific features described in connection with the embodiment or example , structures, materials or features are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the described specific features, structures, materials or characteristics may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples and features of different embodiments or examples described in this specification without conflicting with each other.

Although the embodiments of the present invention have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and should not be construed as limitations of the present invention, and those skilled in the art are within the scope of the present invention. Variations, modifications, substitutions and variations can be made to the above-described embodiments.

Claims (4)

1. A kind of 1. packing formula energy saving oil extraction pump, it is characterised in that including pump barrel (1), hollow plunger (2), hollow rod (3) and Packer (4),

   The bottom of the pump barrel (1) is provided with fixed check valve (5), the top connected pipes (14) of the pump barrel (1)；

   The packer (4) is arranged in the pump barrel (1) and is fixedly connected with the pump barrel (1) or the packer (4) is set Put in the oil pipe (14) and be fixedly connected with the oil pipe (14)；

   The fixed bottom for being set in the hollow rod (3) of the hollow plunger (2)；

   The hollow rod (3) is inserted in the packer (4) and is slidably connected with the packer (4)；

   The hollow plunger (2) is inserted in the pump barrel (1) and is slidably connected with the pump barrel (1)；

   Travelling check valve (6) is provided with the hollow rod (3), the top of the hollow rod (3) is provided with discharge opeing Mouth (13).
2. 2. a kind of packing formula energy saving oil extraction pump according to claim 1, it is characterised in that described to exhale also including spiracle (7) Sucker (7), which is arranged on the pump barrel (1), connects the packer (4) and the hollow plunger in the extraneous and pump barrel (1) (2) cavity between.
3. 3. a kind of packing formula energy saving oil extraction pump according to claim 1 or claim 2, it is characterised in that also including lower Anti-impact shock-absorbing Cover (8), the lower Anti-impact shock-absorbing set (8) is arranged in the pump barrel (1) and is set on the hollow rod (3) simultaneously tight Paste the upper surface of the hollow plunger (2).
4. 4. a kind of packing formula energy saving oil extraction pump according to claim 1 or claim 2, it is characterised in that also including upper Anti-impact shock-absorbing Cover (9), the upper Anti-impact shock-absorbing set (9) is arranged in the pump barrel (1) and is set on the hollow rod (3) simultaneously tight Paste the upper surface of the packer (4).