Oil-gas multiphase pump

Abstract

The utility model relates to the technical field of delivery pumps, and provides an oil-gas multiphase pump which comprises a packing box, a plunger and a sealing packing, and the plunger is arranged in the packing box in a sliding mode. The sealing packing is filled between the packing box and the plunger; one end of the suction pipeline is embedded in the sealing packing, and the other end of the suction pipeline penetrates through the packing box; one end of the oil injection pipeline is embedded in the sealing packing, the other end of the oil injection pipeline penetrates through the packing box, and the two sides of the oil injection pipeline are each provided with one oil injection pipeline. By arranging the suction pipeline and the oil injection pipeline, the sealing effect can be improved by injecting lubricating oil through the oil injection pipeline, meanwhile, the interior of the sealing packing can be sucked through the suction pipeline so as to remove the lubricating oil, a conveying medium overflowing into the sealing packing can be discharged, and residues in the sealing packing can be reduced as much as possible; and the oil injection pipeline and the suction pipeline can operate synchronously, so that a conveyed medium can be prevented from overflowing into the sealing packing in the suction process.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of conveying pump machine, especially to an oil gas mixed conveying pump. BACKGROUND

[0002] In the exploitation process of the oil field, according to the medium composition of the oil field, a large amount of hydrogen sulfide is usually contained, which contains a strong poison, so the sealing when the exploitation equipment is running is particularly important. At present, the conveying work of the exploitation medium is carried out through the circulating pump, in order to avoid the overflow of the medium between the sealing packing and the plunger, certain sealing measures need to be set.

[0003] The utility model discloses a reciprocating oil gas mixed conveying pump, including power end assembly and liquid force end assembly, the liquid force end assembly includes pump head body, and the inside of pump head body is equipped with installation cavity, installs the valve assembly in installation cavity, and the valve assembly one side is equipped with piston cylinder sleeve assembly or plunger packing box assembly, the valve assembly includes valve seat, and the inside of valve seat is equipped with the parallel arrangement of suction valve and discharge valve, and the number of suction valve and discharge valve can be multiple, the pump head body is equipped with the medium import and medium export with its installation cavity intercommunication, and the medium import is connected with the suction pipe junction, and the medium export is connected with the discharge pipe junction.

[0004] As in the above technical scheme, the packing box is provided with a sealing packing, which seals the movement gap of the plunger, so as to avoid the leakage of the medium. But because the mixed conveying pump usually works in a high pressure environment, the conveying medium is easy to mix with lubricating oil and overflow through the packing, which will pollute the environment and threaten the safety of the workers, so a new sealing measure is needed. Utility model content

[0005] Therefore, the utility model provides an oil gas mixed conveying pump with good sealing effect and difficult-to-leak conveying medium, thereby solving the problem of easy leakage of the conveying medium due to high pressure in the existing mixed conveying pump.

[0006] The technical scheme of the utility model is realized as follows: the utility model provides an oil gas mixed conveying pump, which comprises a packing box, a plunger and a sealing packing, wherein,

[0007] The plunger is slidably arranged in the packing box;

[0008] The sealing packing is filled between the packing box and the plunger;

[0009] The utility model further comprises a suction pipeline and an oil injection pipeline, wherein,

[0010] One end of the suction pipeline is embedded in the sealing packing, and the other end penetrates the packing box;

[0011] One end of the oil injection pipeline is embedded in the sealing packing, the other end penetrates the packing box, and the oil injection pipeline is provided with one on each side of the suction pipeline.

[0012] On the basis of the above technical scheme, preferably, the suction pipeline is connected with a suction pump.

[0013] On the basis of the above technical scheme, preferably, the sealing ring is arranged between the packing box and the plunger, and the sealing ring is located on one side of the sealing packing.

[0014] On the basis of the above technical scheme, preferably, the sealing ring comprises an elastic ring and a reinforcing ring, wherein,

[0015] The elastic ring is sleeved on the plunger, the inner ring of the elastic ring is attached to the plunger, and the outer ring is attached to the packing box;

[0016] The reinforcing ring is made of metal, and the reinforcing ring is embedded in the elastic ring.

[0017] On the basis of the above technical scheme, preferably, the sealing ring further comprises a reinforcing column, the reinforcing column is connected with the reinforcing ring and is inserted into the elastic ring.

[0018] On the basis of the above technical scheme, preferably, an inclined chamfer is arranged between the side of the elastic ring close to the sealing packing and the circumferential surface of the packing box.

[0019] On the basis of the above technical scheme, preferably, the inner ring surface of the elastic ring is provided with a conical structure.

[0020] On the basis of the above technical scheme, preferably, the sealing ring further comprises a gasket, the gasket is arranged on the inner ring surface of the elastic ring, and the gasket and the elastic ring are arranged in an integrated structure.

[0021] On the basis of the above technical scheme, preferably, the drive shaft is connected with the plunger and extends to the outside of the packing box.

[0022] On the basis of the above technical scheme, preferably, the sealing ring is arranged on one side of the sealing packing close to the drive shaft, or the sealing ring is arranged on one side of the sealing packing away from the drive shaft.

[0023] The oil and gas mixed transport pump of the utility model has the following beneficial effects compared with the prior art:

[0024] (1) by setting the suction line and oil line, and the end of the suction line and oil line buried in the sealing packing, so as to improve the sealing effect by injecting lubricating oil through the oil line, while also through the suction line to the inside of the sealing packing to remove the lubricating oil, which will be transported to the sealing packing medium to minimize the residue in the sealing packing; and the oil line and suction line can be operated synchronously, so as to avoid the transport of the medium in the process of the sealing packing; and the suction line can be used as a passive evacuation pipe to discharge the gas overflowing into the sealing packing;

[0025] (2) by setting a sealing ring between the packing and the plunger, which can further improve the sealing effect to reduce the leakage of the transported medium;

[0026] (3) the sealing ring comprises two parts of the elastic ring and the reinforcing ring, so that after the elastic ring is assembled on the plunger, the reinforcing ring is sleeved and connected with the elastic ring, which can improve the convenience of the sealing ring installation and facilitate to ensure the structural strength of the sealing ring. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative labor on the basis of these drawings.

[0028] Figure 1 is a sectional view of the oil and gas mixed transport pump of the present application;

[0029] Figure 2 is the present application Figure 1 is an enlarged view of point A structure in the present application;

[0030] Figure 3 is an exploded view of the sealing ring of the oil and gas mixed transport pump of the present application;

[0031] In the figure: 1, packing box; 2, plunger; 3, sealing packing; 4, suction line; 5, oil line; 6, sealing ring; 61, elastic ring; 62, reinforcing ring; 63, reinforcing column; 64, gasket; 601, bevel; 602, inner ring surface; 7, drive shaft. DETAILED DESCRIPTION

[0032] The technical scheme in the embodiments of the utility model will be clearly and completely described below in combination with 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 of the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0033] As shown in Figures 1 to 3 The oil and gas mixed delivery pump of the utility model, comprising a packing box 1, a plunger 2, a sealing packing 3, a suction pipeline 4, an oil injection pipeline 5, a sealing ring 6 and a driving shaft 7.

[0034] As shown in Figure 1 The plunger 2 is slidably arranged in the packing box 1; the sealing packing 3 is filled between the packing box 1 and the plunger 2.

[0035] As the above structure, the plunger 2 is a moving component, one end of which is connected with a driving member composed of a motor and a connecting rod and the like to realize the reciprocating motion of the plunger 2, and the other end of the plunger 2 is used for connecting a valve rod to drive the valve core of the pump set to move.

[0036] The packing box 1 is used for limiting the plunger 2 to support the reciprocating motion of the plunger 2, and the sealing packing 3 is used for sealing the gap between the packing box 1 and the plunger 2.

[0037] As shown in Figure 1 One end of the suction pipeline 4 is embedded in the sealing packing 3, and the other end penetrates through the packing box 1; one end of the oil injection pipeline 5 is embedded in the sealing packing 3, and the other end penetrates through the packing box 1, and one oil injection pipeline 5 is arranged on each side of the suction pipeline 4.

[0038] As the above structure, the suction pipeline 4 and the oil injection pipeline 5 are arranged, and the end portions of the suction pipeline 4 and the oil injection pipeline 5 are embedded in the sealing packing 3, so that the sealing effect can be improved by injecting lubricating oil through the oil injection pipeline 5, and the inside of the sealing packing 3 can be suctioned to remove the lubricating oil, which can discharge the conveying medium overflowing into the sealing packing 3 to minimize the residues in the sealing packing 3.

[0039] When the sealing packing 3 is suctioned and cleaned, the oil injection pipeline 5 is synchronously operated to fill the gap of the sealing packing 3, so that the conveying medium overflowing into the sealing packing 3 during the suction process can be avoided.

[0040] In some embodiments, the suction pipeline 4 is connected with a pressure relief valve and a gas treatment device to discharge the gas overflowing into the sealing packing 3 due to high pressure, and passive treatment is realized.

[0041] Further, the suction pipeline 4 is connected with a suction pump; thus, the inside of the sealing packing 3 can be sucked through the suction pump cooperating with the suction pipeline 4.

[0042] As shown in Figure 1 The sealing ring 6 is arranged between the packing box 1 and the plunger 2, and the sealing ring 6 is located at one side of the sealing packing 3.

[0043] As the above structure, the sealing ring 6 is arranged between the packing box 1 and the plunger 2, which can avoid the overflow of the conveying medium to the driving end of the plunger 2, thereby preventing the damage of the driving assembly.

[0044] As shown in Figure 2 and Figure 3 The sealing ring 6 comprises an elastic ring 61 and a reinforcing ring 62, wherein the elastic ring 61 is sleeved on the plunger 2, the inner ring of the elastic ring 61 is attached to the plunger 2, and the outer ring is attached to the packing box 1; the reinforcing ring 62 is made of metal, and the reinforcing ring 62 is embedded in the elastic ring 61;

[0045] As the above structure, the sealing ring 6 comprises the elastic ring 61 and the reinforcing ring 62, when applied, the peripheral surface of the plunger 2 is provided with a groove for accommodating the sealing ring 6;

[0046] The elastic ring 61 can be conveniently sleeved on the plunger 2 and clamped into the groove in the peripheral surface of the plunger 2 by relying on elasticity, and has the advantage of convenient assembly;

[0047] In order to ensure the structural strength of the elastic ring 61 and achieve good sealing effect, the reinforcing ring 62 is sleeved on the plunger 2, and then embedded with the elastic ring 61, so as to ensure the stable posture of the elastic ring 61; then the plunger 2 is inserted into the packing box 1.

[0048] As shown in Figure 2 and Figure 3 The sealing ring 6 further comprises a reinforcing column 63, which is connected with the reinforcing ring 62 and inserted into the elastic ring 61;

[0049] As the above structure, the sealing ring 6 further comprises the reinforcing column 63, in order to ensure the strength of the sealing ring 6, the thickness of the elastic ring 61 can be set larger, and the reinforcing column 63 is inserted to realize the structural reinforcement of the elastic ring 61.

[0050] As shown in Figure 2 and Figure 3 The side of the elastic ring 61 close to the sealing packing 3 is provided with an inclined chamfer 601 between the peripheral surface attached to the packing box 1;

[0051] As the above structure, the inclined chamfer 601 is arranged on the elastic ring 61, so that the plunger 2 after assembling the elastic ring 61 is inserted into the packing box 1,

[0052] AsFigure 2 and Figure 3 As shown in the figure, the inner ring surface 602 of the elastic ring 61 is set as a tapered structure;

[0053] As shown in the figure, the inner ring surface 602 of the elastic ring 61 is set as a tapered structure;

[0054] As shown in the figure, the inner ring surface 602 of the elastic ring 61 is set as a tapered structure; Figure 2 and Figure 3 As shown in the figure, the gasket 64 is arranged on the inner ring surface 602 of the elastic ring 61, and the gasket 64 and the elastic ring 61 are arranged in an integrated structure;

[0055] As shown in the figure, the gasket 64 is arranged on the inner ring surface 602 of the elastic ring 61, and the gasket 64 and the elastic ring 61 are arranged in an integrated structure;

[0056] As shown in the figure, the gasket 64 is arranged on the inner ring surface 602 of the elastic ring 61, and the gasket 64 and the elastic ring 61 are arranged in an integrated structure; Figure 1 As shown in the figure, the gasket 64 is arranged on the inner ring surface 602 of the elastic ring 61, and the gasket 64 and the elastic ring 61 are arranged in an integrated structure;

[0057] As shown in the figure, the gasket 64 is arranged on the inner ring surface 602 of the elastic ring 61, and the gasket 64 and the elastic ring 61 are arranged in an integrated structure;

[0058] As shown in the figure, the gasket 64 is arranged on the inner ring surface 602 of the elastic ring 61, and the gasket 64 and the elastic ring 61 are arranged in an integrated structure; Figure 1 As shown in the figure, the gasket 64 is arranged on the inner ring surface 602 of the elastic ring 61, and the gasket 64 and the elastic ring 61 are arranged in an integrated structure;

[0059] As shown in the figure, the gasket 64 is arranged on the inner ring surface 602 of the elastic ring 61, and the gasket 64 and the elastic ring 61 are arranged in an integrated structure;

[0060] In some embodiments, one gasket 6 is arranged on each side of the sealing packing 3.

[0061] Specific implementation steps:

[0062] As shown in the figure, the gasket 64 is arranged on the inner ring surface 602 of the elastic ring 61, and the gasket 64 and the elastic ring 61 are arranged in an integrated structure;

[0063] As shown in the figure, the gasket 64 is arranged on the inner ring surface 602 of the elastic ring 61, and the gasket 64 and the elastic ring 61 are arranged in an integrated structure;

[0064] After stopping pumping, the oil injection pipeline 5 stops, the pumping pipeline 4 can be kept in an open state to realize passive discharge work in a high pressure state, and the oil injection pipeline 5 supplements lubricating oil in a proper opportunity;

[0065] The pumping pipeline 4 is connected with a gas-liquid separation treatment device, thereby realizing harmless treatment.

[0066] The above merely describes preferred embodiments of the present application, and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An oil-gas mixed-transfer pump, comprising a packing box (1), a plunger (2), and a sealing packing (3), wherein, The plunger (2) is slidably disposed within the packing box (1); The sealing packing (3) is filled between the packing box (1) and the plunger (2); Its features include: a suction pipe (4) and an oil injection pipe (5), wherein, One end of the suction pipe (4) is embedded in the sealing packing (3), and the other end passes through the packing box (1); One end of the oil injection line (5) is embedded in the sealing packing (3), and the other end passes through the packing box (1). The oil injection line (5) is provided on both sides of the suction line (4).

2. The oil-gas mixed transport pump as described in claim 1, characterized in that: The suction pipeline (4) is connected to a suction pump.

3. The oil-gas mixed transport pump as described in claim 1 or 2, characterized in that: It also includes a sealing ring (6), which is disposed between the packing box (1) and the plunger (2), and the sealing ring (6) is located on one side of the sealing packing (3).

4. The oil-gas mixed transport pump as described in claim 3, characterized in that: The sealing ring (6) includes an elastic ring (61) and a reinforcing ring (62), wherein, The elastic ring (61) is sleeved on the plunger (2), with the inner ring of the elastic ring (61) fitting the plunger (2) and the outer ring fitting the packing box (1); The reinforcing ring (62) is made of metal and is fitted inside the elastic ring (61).

5. The oil-gas mixed transport pump as described in claim 4, characterized in that: The sealing ring (6) also includes a reinforcing post (63), which is connected to the reinforcing ring (62) and inserted into the elastic ring (61).

6. The oil-gas mixed transport pump as described in claim 4, characterized in that: The elastic ring (61) has a chamfer (601) between the side of the sealing packing (3) and the circumferential surface of the packing box (1).

7. The oil-gas mixed transport pump as described in claim 6, characterized in that: The inner ring surface (602) of the elastic ring (61) has a tapered cross-section.

8. The oil-gas mixed transport pump as described in claim 7, characterized in that: The sealing ring (6) also includes a washer (64), which is disposed on the inner ring surface (602) of the elastic ring (61), and the washer (64) and the elastic ring (61) are configured as an integral structure.

9. The oil-gas mixed transport pump as described in claim 3, characterized in that: It also includes a drive shaft (7) connected to the plunger (2) and extending to the outside of the packing box (1).

10. The oil-gas mixed transport pump as described in claim 9, characterized in that: The sealing ring (6) is disposed on the side of the sealing packing (3) close to the drive shaft (7), or the sealing ring (6) is disposed on the side of the sealing packing (3) away from the drive shaft (7).

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