Autorotation swirler for oil well pump

Abstract

The utility model relates to the technical field of oil-well pumps of oil and gas fields, in particular to an autorotation cyclone for an oil-well pump, which comprises an upper connecting piece, a dustproof sealing ring and a lower connecting piece, the upper end of the upper connecting piece is in threaded connection with an upper plunger assembly, the lower end of the lower connecting piece is in threaded connection with a lower plunger assembly, and the lower end of the upper connecting piece is inserted into the lower connecting piece. And a certain inclination angle is designed at the uppermost end of the lower connecting piece. When the oil well pump is used, the upper connecting piece, the sealing nut, the dustproof sealing ring, the lower connecting piece, the first one-way bearing, the second one-way bearing, the force bearing support, the meshing type rotator and the rotating guide rail structure are used in cooperation, so that a sealing environment is conveniently formed, and crude oil is lifted to an upper plunger assembly of the oil well pump from the lower connecting piece through the autorotation cyclone; impurities such as gravels in crude oil cannot enter a gap between the meshing type rotator and the rotating guide rail, pump blocking of the swirler is avoided, and the pump inspection period and the service life of the oil well pump are prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to oil and gas field oil well pump technical field, concretely is a kind of self-rotating cyclone for oil well pump. BACKGROUND

[0002] Oil well pump is the device for providing power to oil lifting to ground, and straight pumping type oil well pump occupies dominant position due to the advantages of simple design, easy processing and convenient use, and plays this important role in oil production process. Oilfield exploitation enters middle and later period, and the increase of sand, tube rod corrosion debris and other sundries such as solid sand agent after chemical sand control operation in crude oil makes exploitation difficult, which leads to the frequent occurrence of situations such as plunger sticking, fixed valve blocking and fixed valve ball seat being punctured of the currently used straight pumping type oil well pump. Therefore, using reasonable and scientific oil extraction tool can effectively control the occurrence of situations such as plunger sticking and fixed valve ball seat being punctured. And most of the existing oil and gas wells are directional wells, and a large amount of sand and other impurities are easy to enter the gap between plunger and pump cylinder during working process, which can cause eccentric wear and damage, reduce the pumping capacity of oil well pump, and shorten the service life of pump. Aiming at the above two problems, a self-rotating cyclone for oil well pump is developed, which has the advantages of universality, low cost and high stability. The design idea is changed from "sand prevention" and "sand setting" to "sand discharge", so that the cyclone can better solve the problems of pump sticking and eccentric wear in pump. Therefore, the self-rotating cyclone for oil well pump is provided to solve the above problems. SUMMARY

[0003] The utility model aims at providing a kind of self-rotating cyclone for oil well pump to solve the problems raised in the above background.

[0004] To achieve the above object, the utility model provides the following technical scheme:

[0005] A kind of self-rotating cyclone for oil well pump, including upper connecting piece, dustproof sealing ring and lower connecting piece, the upper end of the upper connecting piece is connected with upper plunger assembly by screw thread, lower connecting piece lower end is connected with lower plunger assembly by screw thread, upper connecting piece lower end is inserted in lower connecting piece, and the uppermost end of lower connecting piece is designed with a certain angle of inclination, dustproof sealing ring is arranged on the inner wall of the upper part of lower connecting piece, and second one-way bearing and load support are sequentially connected by screw thread from top to bottom on the lower side of dustproof sealing ring, sealing nut is connected by screw thread on the inner wall of the middle part of upper connecting piece, and rotating guide rail is arranged on the lower side of sealing nut, meshing type rotator is engaged on rotating guide rail, first one-way bearing is arranged on the outer wall of meshing type rotator, and the outer wall of first one-way bearing is fixedly connected with the inner wall of upper connecting piece.

[0006] As a further scheme of the utility model, the inner wall of the middle part of the upper connecting piece is provided with internal threads corresponding to the sealing nut, and the upper part of the sealing nut is provided with a settling space.

[0007] As a further scheme of the utility model, the outer wall of the lower part of the upper connecting piece is provided with a large-diameter protrusion corresponding to the load-bearing support, which can bear the load through the buffering contact of the load-bearing support.

[0008] As a further scheme of the utility model, the dustproof sealing ring is in the shape of a conical cylinder and is made of high-temperature-resistant and corrosion-resistant rubber material.

[0009] As a further scheme of the utility model, the inner wall of the middle part of the lower connecting piece is provided with threaded holes corresponding to the rotating guide rail, and the inner wall of the middle part of the lower connecting piece is threadedly connected with the rotating guide rail.

[0010] As a further scheme of the utility model, a sealing space is formed between the upper connecting piece and the lower connecting piece, and high-temperature-resistant grease is filled in the sealing space.

[0011] As a further scheme of the utility model, the rotating guide rail and the meshing type rotator are provided with a protective layer on the surface, and the protective layer is a nickel spraying layer, a carburizing layer or a hard chromium plating layer.

[0012] Compared with the prior art, the utility model has the advantages that:

[0013] 1. When the utility model is used, the upper connecting piece, the sealing nut, the dustproof sealing ring, the lower connecting piece, the first one-way bearing, the second one-way bearing, the load-bearing support, the meshing type rotator and the rotating guide rail structure are used in cooperation to form a sealed environment, so that the crude oil is lifted to the upper piston assembly of the oil pump through the self-rotating cyclone from the lower connecting piece, the sand and other impurities in the crude oil cannot enter the gap between the meshing type rotator and the rotating guide rail, the pump is prevented from being stuck, and the pump inspection period and the service life of the oil pump are prolonged.

[0014] 2. When the utility model is used, the upper piston assembly of the oil pump drives the upper connecting piece of the self-rotating cyclone, the first one-way bearing and the meshing type rotator to move upward relative to the rotating guide rail, and then moves to the top dead point of the oil pumping machine at a common speed to complete the upstroke process. After the upstroke process is completed, the upper connecting piece drives the first one-way bearing and the meshing type rotator to move downward relative to the rotating guide rail, the first one-way bearing and the second one-way bearing work, and the lower connecting piece drives the lower piston assembly of the oil pump to move in a circumferential direction during the downstroke, thereby relieving the eccentric wear problem between the piston in the pump and the pump barrel, prolonging the pump inspection period of the oil pump, changing the flow state of the crude oil to cyclone, and improving the circumferential speed of the sand and other impurities in the crude oil, thereby preventing the sand and other impurities from settling and gathering in the pump, reducing the pump sticking and pump blocking accidents.

[0015] 3、The self-rotating cyclone device for oil pumping pump has the advantages that the sedimentation space in the cyclone device can sediment and gather the sand, the corrosion debris of the pipe rod and the solid sand agent after the chemical sand prevention operation in the crude oil, and the pump inspection period and the service life of the oil pumping pump can be further prolonged.

[0016] 4、The self-rotating cyclone device for oil pumping pump has the advantages that the self-rotating cyclone device has simple structure and low manufacturing cost, and can be applied to most oil pumping pumps and has strong universality and stability. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 It is a whole structure schematic view of a self-rotating cyclone device for oil pumping pump.

[0018] Fig. 2 It is a structure schematic view of an upper connecting piece in a self-rotating cyclone device for oil pumping pump.

[0019] Fig. 3 It is a structure schematic view of a lower connecting piece in a self-rotating cyclone device for oil pumping pump.

[0020] Fig. 4 It is a structure schematic view of a rotating guide rail in a self-rotating cyclone device for oil pumping pump.

[0021] Fig. 5 It is a structure schematic view of a meshing type rotating device in a self-rotating cyclone device for oil pumping pump.

[0022] Fig. 6 It is a structure schematic view of a self-rotating cyclone device for oil pumping pump.

[0023] In the drawing: 1, upper connecting piece; 2, sealing nut; 3, dustproof sealing ring; 4, lower connecting piece; 5, first one-way bearing; 6, second one-way bearing; 7, force bearing support; 8, meshing type rotating device; 9, rotating guide rail; 10, sealing space; 11, sedimentation space; 12, upper plunger assembly; 13, lower plunger assembly. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the person skilled in the art without creative labor belong to the protection range of the utility model.

[0025] In the present utility model, the word "exemplary" is used to mean "serving as an example, instance, or illustration". Any embodiment described as "exemplary" in the present utility model is not necessarily to be construed as preferred or advantageous over other embodiments. The following description is presented to enable any person skilled in the art to make and use the present utility model. In the following description, for the purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the present utility model. It will be apparent, however, to one skilled in the art that the present utility model can be practiced without using these specific details. In other instances, well-known structures and processes are not elaborated as not to obscure the description of the present utility model with unnecessary details. Thus, the present utility model is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles and features disclosed herein.

[0026] Embodiment

[0027] Please refer to Figs. 1-6 In the embodiment of the present utility model, a self-rotating cyclone for a pumping unit comprises an upper connecting piece 1, a dustproof sealing ring 3 and a lower connecting piece 4, the upper end of the upper connecting piece 1 is threadedly connected with an upper plunger assembly 12, the lower end of the lower connecting piece 4 is threadedly connected with a lower plunger assembly 13, the lower end of the upper connecting piece 1 is inserted into the lower connecting piece 4, and the uppermost end of the lower connecting piece 4 is designed with an inclination, the inner wall of the upper part of the lower connecting piece 4 is provided with the dustproof sealing ring 3, the lower side of the dustproof sealing ring 3 is threadedly connected with a second one-way bearing 6 and a force bearing support 7 from top to bottom in sequence, the inner wall of the middle part of the upper connecting piece 1 is threadedly connected with a sealing nut 2, the lower side of the sealing nut 2 is provided with a rotating guide rail 9, the rotating guide rail 9 is engaged with an engagement type rotator 8, the outer wall of the engagement type rotator 8 is provided with a first one-way bearing 5, and the outer wall of the first one-way bearing 5 is fixedly connected with the inner wall of the upper connecting piece 1.

[0028] The inner wall of the middle part of the upper connecting piece 1 is provided with internal threads corresponding to the sealing nut 2, and the upper part of the sealing nut 2 is provided with a settling space 11, and the inner wall of the lower connecting piece 4 is provided with internal threads corresponding to the second one-way bearing 6 and the force bearing support 7.

[0029] The sealing space 10 is formed between the upper connecting piece 1 and the lower connecting piece 4, and high-temperature-resistant grease is filled in the sealing space 10.

[0030] The outer wall of the lower part of the upper connecting piece 1 is provided with a large-diameter protrusion corresponding to the force bearing support 7, and the force bearing support 7 can be used to buffer contact and bear stress.

[0031] The dustproof sealing ring 3 is in the shape of a conical cylinder and is made of high-temperature-resistant and corrosion-resistant rubber material.

[0032] The inner wall of the middle part of the lower connecting piece 4 is provided with a threaded hole corresponding to the rotating guide rail 9, and the inner wall of the middle part of the lower connecting piece 4 is threadedly connected with the rotating guide rail 9.

[0033] The surface of the rotating guide rail 9 and the meshing rotator 8 is provided with a protective layer, which is a nickel spraying layer, a carburizing layer or a hard chromium plating layer.

[0034] The working principle of the utility model is:

[0035] In use, the upper connecting piece 1, the sealing nut 2, the dustproof sealing ring 3, the lower connecting piece 4, the first one-way bearing 5, the second one-way bearing 6, the force bearing support 7, the meshing rotator 8 and the rotating guide rail 9 are used in cooperation, so that a sealed environment is formed, crude oil is lifted to the upper plunger assembly 12 of the oil pump by the self-rotating cyclone through the lower connecting piece 4, and sand and gravel impurities in the crude oil cannot enter the gap between the meshing rotator 8 and the rotating guide rail 9, so that the cyclone is prevented from being stuck in the pump, the pump inspection period and the service life of the oil pump are prolonged, the upper plunger assembly 12 of the oil pump drives the upper connecting piece 1, the first one-way bearing 5 and the meshing rotator 8 of the self-rotating cyclone to move upward relative to the rotating guide rail 9, and then moves to the top dead point of the oil pumping machine at a common speed, so that the upstroke process is completed; after the upstroke process is completed, the upper connecting piece 1 drives the first one-way bearing 5 and the meshing rotator 8 to move downward relative to the rotating guide rail 9, the first one-way bearing 5 and the second one-way bearing 6 work, and the lower connecting piece 4 drives the lower plunger assembly 13 of the oil pump to move in a circumferential direction during the downstroke, so that the eccentric wear problem between the plunger and the pump barrel in the pump is alleviated, the pump inspection period of the oil pump is prolonged, the flow state of the crude oil is changed to cyclone, the circumferential speed of sand and gravel impurities in the crude oil is improved, and the sand and gravel impurities are prevented from settling and gathering in the pump, so that the pump sticking and blocking accidents are reduced.

[0036] The above is only a preferred specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model.

Claims

1. A self-rotating cyclone for a sucker rod pump, comprising an upper connector (1), a dust seal ring (3) and a lower connector (4), characterized in that, The upper end of the upper connecting piece (1) is threadedly connected with the upper plunger assembly (12), the lower end of the lower connecting piece (4) is threadedly connected with the lower plunger assembly (13), the lower end of the upper connecting piece (1) is inserted into the lower connecting piece (4), and the uppermost end of the lower connecting piece (4) is designed with a certain inclination, the inner wall of the upper part of the lower connecting piece (4) is provided with a dustproof sealing ring (3), the lower side of the dustproof sealing ring (3) is threadedly connected with a second one-way bearing (6) and a force bearing support (7) from top to bottom, the inner wall of the middle part of the upper connecting piece (1) is threadedly connected with a sealing nut (2), the lower side of the sealing nut (2) is provided with a rotating guide rail (9), the rotating guide rail (9) is engaged with an engagement type rotator (8), the outer wall of the engagement type rotator (8) is provided with a first one-way bearing (5), and the outer wall of the first one-way bearing (5) is fixedly connected with the inner wall of the upper connecting piece (1).

2. A self-whirling cyclone for use in a sucker rod pump as defined in claim 1, wherein The inner wall of the middle part of the upper connecting piece (1) is provided with an inner thread corresponding to the sealing nut (2), and the upper part of the sealing nut (2) is provided with a subsiding space (11), and the inner wall of the lower connecting piece (4) is provided with an inner thread corresponding to the second one-way bearing (6) and the force bearing support (7).

3. A self-whirling cyclone for use in a sucker rod pump as defined in claim 1, wherein The upper connecting piece (1) and the lower connecting piece (4) form a sealed space (10), and the sealed space (10) is filled with high-temperature-resistant grease.

4. A self-whirling cyclone for use in a sucker rod pump as defined in claim 1, wherein The dustproof sealing ring (3) is in the shape of a conical cylinder and is made of high-temperature-resistant and corrosion-resistant rubber material.

5. A self-whirling cyclone for use in a sucker rod pump as defined in claim 1, wherein, The outer wall of the lower part of the upper connecting piece (1) is provided with a large-diameter protrusion corresponding to the force bearing support (7).

6. A self-whirling cyclone for use in a sucker rod pump as defined in claim 1, wherein The surface layers of the rotating guide rail (9) and the engagement type rotator (8) are provided with protective layers.

7. A self-whirling cyclone for use in a sucker rod pump as defined in claim 1, wherein The inner wall of the middle part of the lower connecting piece (4) is provided with a threaded hole corresponding to the rotating guide rail (9), and the inner wall of the middle part of the lower connecting piece (4) is threadedly connected with the rotating guide rail (9).

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