Sewage blocking device for plunger of reinjection pump for gas field

Abstract

The utility model relates to the technical field of gas production process matching parts, in particular to a gas field reinjection pump plunger sewage blocking device which comprises a partition plate assembly, and the partition plate assembly comprises a first blocking plate and a second blocking plate which are arranged in a stacked mode. The first blocking plate is provided with a first clamping groove matched with a pull rod, the second blocking plate is provided with a second clamping groove matched with the pull rod, and the first blocking plate and the second blocking plate are connected through a first limiting piece. A limiting boss is arranged on the first barrier plate and / or the second barrier plate, and a second limiting piece used for abutting against a pull rod is arranged on the limiting boss; and when the first blocking plate and the second blocking plate are connected, the first clamping groove and the second clamping groove are staggered with each other. Through the first limiting piece and the second limiting piece, dual connection and fixation of the blocking device are achieved, the blocking device can be effectively prevented from falling off from the pull rod, and the influence of sewage splashing on the crankcase is effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of gas production process supporting parts and components, in particular to a plunger sewage blocking device for a reinjection pump used in a gas field. Background Art

[0002] During the high-sulfur gas production process, the sulfur-containing wastewater produced in the gas production area is treated and then pumped to a special well station for reinjection. A plunger reinjection pump is generally used for the reinjection operation. Specifically, in the plunger reinjection pump, the power motor pulls the plunger through the pull rod on the crankcase, and the pull rod reciprocates between the crankcase and the plunger cavity. The pull rod includes a first section that can completely enter the plunger cavity and a second section that can completely enter the crankcase. There is a third section between the first section and the second section. When the pull rod reciprocates, the third section is always between the crankcase and the plunger cavity.

[0003] During the reinjection process of the plunger reinjection pump, the movement of the plunger transforms the low-pressure water in the pump head into high-pressure water. During the reciprocating motion of the pull rod, some of the high-pressure sewage in the plunger cavity will splash out from the connection between the first section and the plunger cavity, and some of the splashed sewage will splash to the second section. When the seal between the crankcase and the second section ages to a certain extent, the sewage adhered to the second section enters the crankcase through the second section, emulsifying the engine oil in the crankcase, thereby damaging various accessories in the crankcase and affecting the normal operation of the parts in the crankcase.

[0004] Chinese utility model patent CN210484025U, a plunger baffle of a reinjection pump for a gas field and a reinjection system with a baffle, discloses that a bowl-shaped baffle formed by two left and right pieces is arranged at the third section, and is designed to be detachable, so that it can be easily installed, disassembled and replaced. However, it is found in use that the pull rod will cause mechanical vibration during the reciprocating motion, which can easily cause the connecting parts of the bowl-shaped baffle to fall off, resulting in the baffle falling off. Since the falling off of the baffle has no effect on the reinjection process, the operator generally cannot find it immediately, resulting in the sewage splashing to the second section after it falls off, gradually affecting the parts in the crankcase. Utility Model Content

[0005] The utility model aims to overcome the technical problem in the prior art that a plunger baffle of a gas field reinjection pump is easily affected by vibration and falls off, causing sewage to affect parts in a crankcase, and provides a plunger sewage barrier device for a gas field reinjection pump.

[0006] In order to achieve the above-mentioned utility model purpose, the utility model provides the following technical solutions:

[0007] A plunger sewage barrier device for a reinjection pump for a gas field comprises a baffle assembly, wherein the baffle assembly comprises a first baffle plate and a second baffle plate which are stacked; the first baffle plate is provided with a first slot which is adapted to a pull rod, the second baffle plate is provided with a second slot which is adapted to the pull rod, and the first baffle plate and the second baffle plate are connected via a first limiting member; a limiting boss is provided on the first baffle plate and / or the second baffle plate, and a second limiting member for abutting against the pull rod is provided on the limiting boss; when the first baffle plate and the second baffle plate are connected, the first slot and the second slot are offset from each other.

[0008] The utility model discloses a plunger sewage barrier device for a reinjection pump for a gas field, which respectively clamps a pull rod through a first barrier plate and a second barrier plate, so that the first barrier plate and the second barrier plate cooperate with each other to block the sewage from flowing along the pull rod. The structure is simple and the installation is convenient. At the same time, the first limit member and the second limit member are used to realize double connection and fixation of the barrier device, which can effectively prevent the barrier device from falling off the pull rod and effectively prevent the influence of the crankcase caused by sewage splashing.

[0009] As a preferred solution of the utility model, the first blocking plate and the second blocking plate are provided with a plurality of first limiting holes, and the first limiting member is adapted to the first limiting holes. The first blocking plate and the second blocking plate can be relatively rotated according to actual conditions, which facilitates the installation of the blocking device, and the connection position and connection quantity of the first connecting member can be adjusted according to actual conditions to improve the installation stability of the blocking device.

[0010] As a preferred solution of the present utility model, the first limiting member is threadedly connected to the first limiting hole.

[0011] As a preferred solution of the utility model, the limiting boss is provided with a plurality of second limiting holes, and the second limiting member is adapted to the second limiting hole. According to actual conditions, the second limiting member can be adjusted to cooperate with different second limiting holes to achieve the fixing of the blocking device on the pull rod, and the number of the second connecting members can be adjusted according to actual conditions to further improve the installation stability of the blocking device.

[0012] As a preferred solution of the present utility model, the second limiting member is threadedly connected to the second limiting hole.

[0013] As a preferred solution of the utility model, the first baffle plate and the second baffle plate are both circular plates, a through hole is arranged at the center of the circular plate, and the first clamping groove and the second clamping groove are radially connected to the through hole respectively.

[0014] As a preferred solution of the utility model, a plurality of annular grooves are arranged in the through hole, and sealing members are embedded in the annular grooves to effectively prevent sewage from flowing along the pull rod and to prevent the sewage from affecting the crankcase.

[0015] As a preferred solution of the utility model, the limiting boss is in the shape of an arc strip, and a plurality of the limiting bosses are arranged at intervals around the through hole.

[0016] As a preferred solution of the utility model, a plurality of liquid collecting grooves are arranged on the side surface of the first baffle plate and / or the second baffle plate which are away from each other, so that the sewage flows onto the baffle assembly and is collected by the liquid collecting grooves, thereby avoiding pollution caused by sewage splashing.

[0017] As a preferred solution of the utility model, the side surface where the first baffle plate and the second baffle plate are close to each other is set as a plane, and the side surface where the first baffle plate and the second baffle plate are far away from each other is provided with a plurality of stiffening ribs, and the plurality of stiffening ribs are radially distributed around the through hole. The stiffening ribs are used to improve the overall strength of the baffle assembly, and the stiffening ribs are used to further block the splashing of sewage to avoid pollution.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] 1. The first baffle plate and the second baffle plate respectively clamp the pull rod, so that the first baffle plate and the second baffle plate cooperate with each other to block the sewage from flowing along the pull rod, with a simple structure and easy installation;

[0020] 2. The first limit piece and the second limit piece are used to realize double connection and fixation of the barrier device, which can effectively prevent the barrier device from falling off the pull rod and effectively prevent the impact of sewage splashing on the crankcase. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a usage state diagram of a gas field reinjection pump plunger sewage barrier device of the utility model;

[0022] Figure 2 It is a cross-sectional view of a gas field reinjection pump plunger sewage barrier device in use state of the utility model;

[0023] Figure 3 is a schematic structural diagram of the first baffle plate in Example 1;

[0024] Figure 4 yes Figure 3 Schematic diagram of the structure of the AA section;

[0025] Figure 5 is a schematic structural diagram of the second baffle plate in Example 1;

[0026] Figure 6 is a schematic structural diagram of the first baffle plate in Example 3;

[0027] Markings in the figure: 1-first baffle plate, 11-first slot, 12-first limiting hole, 13-through hole, 14-annular groove, 2-second baffle plate, 21-second slot, 3-first limiting member, 4-limiting boss, 41-second limiting hole, 5-second limiting member, 6-sealing member, 7-liquid collecting trough, 8-stiffening rib. DETAILED DESCRIPTION

[0028] The present invention is further described in detail below in combination with test examples and specific implementation methods. However, this should not be understood as the scope of the above subject matter of the present invention being limited to the following embodiments, and all technologies realized based on the content of the present invention belong to the scope of the present invention.

[0029] In the description of the specific embodiments of the present invention, unless otherwise specified, the terms indicating the orientation or position relationship such as "upper", "lower", "left", "right", "center", "inside", "outside", etc. are all expressions based on the orientation or position relationship shown in the drawings, or the orientation or position relationship of the product / equipment / device of the utility model when it is usually used. These terms of orientation or position relationship are only for the convenience of describing the scheme of the utility model or simplifying the description in the specific embodiments, so that technicians can quickly understand the scheme, rather than indicating or implying that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific position relationship, and therefore cannot be understood as a limitation on the present invention.

[0030] In addition, if the terms "horizontal", "vertical", "overhanging", "parallel" and the like appear, it does not mean that the corresponding devices / components / elements are required to be absolutely horizontal or vertical or overhanging or parallel, but may be slightly tilted or have deviations. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but may be slightly tilted. Alternatively, it can be simplified to mean that the corresponding devices / components / elements are set in directions such as "horizontal", "vertical", "overhanging", "parallel", etc., and can have an error / deviation of ±10% relative to the corresponding direction setting, more preferably an error / deviation within ±8%, more preferably an error / deviation within ±6%, more preferably an error / deviation within ±5%, and more preferably an error / deviation within ±4%. As long as the corresponding devices / components / elements are within the error / deviation range, they can still achieve their functions in the solution of the utility model.

[0031] In addition, the expressions “first”, “second”, “third”, etc. that appear in the terms are merely descriptions used to distinguish the same or similar components and should not be understood as emphasizing or implying the relative importance of specific components.

[0032] In addition, in the description of the embodiments of the present invention, "several", "multiple" and "a number" represent at least 2. It can be any number such as 2, 3, 4, 5, 6, 7, 8, 9, and even more than 9.

[0033] In addition, in the description of the technical solution of the utility model, unless otherwise clearly specified / defined / restricted, the terms "set", "install", "connect", "connected", "provided with", "laid", and "arranged" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, and can be welding, riveting, bolting, threading, and other commonly used connection means in the field. This connection can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the internal communication of two components.

[0034] Example 1

[0035] like Figure 1-Figure 5 As shown, a plunger sewage barrier device of a reinjection pump for a gas field in this embodiment includes a baffle assembly, and the baffle assembly includes a first baffle plate 1 and a second baffle plate 2 which are stacked. The first baffle plate 1 and the second baffle plate 2 are both circular plates, and a through hole 13 adapted to the third section of the pull rod is arranged at the center of the circular plate. At the same time, the first baffle plate 1 is provided with a first groove 11 adapted to the pull rod, and the second baffle plate 2 is provided with a second groove 21 adapted to the pull rod. The first groove 11 and the second groove 21 are connected with the through hole 13 along the radial direction of the circular plate, and a limiting boss 4 is arranged on the first baffle plate 1 and / or the second baffle plate 2.

[0036] The present embodiment is a plunger sewage barrier device for a reinjection pump for a gas field. When in use, the first barrier plate 1 is clamped on the pull rod by the first clamping groove 11, and the second barrier plate 2 is clamped on the pull rod by the second clamping groove 21. After the first barrier plate 1 and the second barrier plate 2 are stacked, the first barrier plate 1 and the second barrier plate 2 are relatively rotated around the pull rod to dislocate the first clamping groove 11 and the second clamping groove 21, and then connected by a first limit member 3 arranged along the axial direction of the pull rod, and the limit boss 4 abuts against the pull rod through the second limit member 5 along the radial direction of the pull rod, so that the partition assembly is doubly fixed by the first limit member 3 and the second limit member 5, which can effectively prevent the barrier device from falling off the pull rod and effectively prevent the impact of the crankcase caused by sewage splashing.

[0037] Preferably, the first baffle plate 1 and the second baffle plate 2 are respectively provided with a plurality of first limiting holes 12, and the first limiting holes 12 are preferably through holes 13, or the first limiting holes 12 on the first baffle plate 1 are through holes 13, and the first limiting holes 12 on the second baffle plate 2 are blind holes, so that the first baffle plate 1 and the second baffle plate 2 can be connected by inserting the first limiting parts 3 into the first limiting holes 12.

[0038] Preferably, the first limiting member 3 may be a rivet or a nut and bolt assembly.

[0039] Preferably, the first limiting hole 12 is a threaded hole, and the first limiting member 3 is a bolt.

[0040] Preferably, the number of the first limiting holes 12 and their positions can be adjusted according to actual conditions to satisfy the connection between the first baffle plate 1 and the second baffle plate 2 and the misalignment of the first slot 11 and the second slot 21. Preferably, after the first baffle plate 1 and the second baffle plate 2 are connected, the opening directions of the first slot 11 and the second slot 21 are 180° opposite.

[0041] Preferably, the limiting boss 4 is provided with a plurality of second limiting holes 41, the second limiting holes 41 are preferably threaded holes, the second limiting members 5 are preferably bolts, and the second limiting members 5 can abut against the pull rod after passing through the second limiting holes 41, thereby fixing the position of the partition assembly on the railing.

[0042] Preferably, a plurality of second limiting holes 41 are arranged around the through hole 13, so that the number of the second connecting members can be adjusted according to actual conditions, further improving the installation stability of the barrier device.

[0043] Preferably, the limiting boss 4 is in an arc-shaped strip shape, and a plurality of the limiting bosses 4 are arranged at intervals around the through hole 13. Preferably, after the partition assembly is installed, the limiting boss 4 can be arranged in contact with the pull rod to prevent sewage from flowing along the pull rod.

[0044] Example 2

[0045] like Figure 4 , Figure 6 As shown, a plunger sewage barrier device for a reinjection pump for a gas field in this embodiment is based on the embodiment 1, and a plurality of annular grooves 14 are arranged in the through hole 13, and a sealing member 6 is embedded in the annular groove 14.

[0046] The plunger sewage barrier device of a reinjection pump for a gas field in this embodiment has a seal 6 embedded in the through hole 13, preferably a rubber seal 6. When in use, the rubber seal 6 can fill the gap between the through hole 13 and the pull rod, and can effectively prevent sewage from flowing along the pull rod, avoid the impact of sewage on the crankcase, and increase the friction between the partition assembly and the pull rod, further preventing the partition assembly from moving along the pull rod, and reducing the probability of the partition assembly falling off due to vibration.

[0047] Example 3

[0048] like Figure 6As shown, a gas field reinjection pump plunger sewage barrier device of this embodiment is based on Example 1 or Example 2, and a plurality of liquid collecting tanks 7 are arranged on the side surface away from each other of the first barrier plate 1 and / or the second barrier plate 2.

[0049] In the present embodiment, a plunger sewage barrier device for a reinjection pump for a gas field is provided, wherein the liquid collecting tank 7 is a groove structure arranged on a side surface away from the first baffle plate 1 and the second baffle plate 2, preferably a plurality of arcuate grooves, preferably the plurality of arcuate grooves are arranged at intervals along the radial direction of the through hole 13, so that the sewage flows onto the baffle assembly and is collected by the liquid collecting tank 7, thereby avoiding pollution caused by sewage splashing.

[0050] It should be noted that the liquid collecting tank 7 may be arranged only on the first baffle plate 1 or the second baffle plate 2 close to the sewage splashing side.

[0051] Example 4

[0052] like Figure 1-Figure 6 As shown, a gas field reinjection pump plunger sewage barrier device of this embodiment is based on Example 1 or Example 2 or Example 3, wherein the side surface where the first baffle plate 1 and the second baffle plate 2 are close to each other is set as a plane, and the side surface where the first baffle plate 1 and the second baffle plate 2 are away from each other is set with a plurality of stiffening ribs 8, and the plurality of stiffening ribs 8 are arranged around the through hole 13.

[0053] The plunger sewage barrier device of a reinjection pump for a gas field in this embodiment improves the overall strength of the partition assembly through the stiffening ribs 8, and further blocks sewage splashing through the stiffening ribs 8 to avoid pollution.

[0054] It should be noted that the stiffening ribs 8 may be provided only on the first baffle plate 1 or the second baffle plate 2 close to the sewage splashing side.

Claims

1. A gas field reinjection pump plunger sewage barrier device, characterized in that: The invention comprises a baffle assembly, wherein the baffle assembly comprises a first baffle plate (1) and a second baffle plate (2) which are stacked; the first baffle plate (1) is provided with a first slot (11) adapted to a pull rod, the second baffle plate (2) is provided with a second slot (21) adapted to the pull rod, and the first baffle plate (1) and the second baffle plate (2) are connected via a first limiting member (3); a limiting boss (4) is provided on the first baffle plate (1) and / or the second baffle plate (2), and a second limiting member (5) for abutting against the pull rod is provided on the limiting boss (4); when the first baffle plate (1) and the second baffle plate (2) are connected, the first slot (11) and the second slot (21) are offset from each other.

2. A gas field reinjection pump plunger sewage barrier device as claimed in claim 1, characterized in that: The first blocking plate (1) and the second blocking plate (2) are provided with a plurality of first limiting holes (12), and the first limiting member (3) is adapted to fit the first limiting holes (12).

3. A gas field reinjection pump plunger sewage barrier device as claimed in claim 2, characterized in that: The first limiting member (3) is threadedly connected to the first limiting hole (12).

4. A gas field reinjection pump plunger sewage barrier device as claimed in claim 1, characterized in that: The limiting boss (4) is provided with a plurality of second limiting holes (41), and the second limiting member (5) is adapted to fit the second limiting holes (41).

5. A gas field reinjection pump plunger sewage barrier device as claimed in claim 4, characterized in that: The second limiting member (5) is threadedly connected to the second limiting hole (41).

6. A gas field reinjection pump plunger sewage barrier device as described in any one of claims 1 to 5, characterized in that: The first blocking plate (1) and the second blocking plate (2) are both circular plates, a through hole (13) is provided at the center of the circular plate, and the first clamping groove (11) and the second clamping groove (21) are respectively radially connected to the through hole (13).

7. A gas field reinjection pump plunger sewage barrier device as claimed in claim 6, characterized in that: A plurality of annular grooves (14) are arranged in the through hole (13), and a sealing member (6) is embedded in the annular groove (14).

8. A gas field reinjection pump plunger sewage barrier device as claimed in claim 7, characterized in that: The limiting boss (4) is in the shape of an arc strip, and a plurality of the limiting bosses (4) are arranged at intervals around the through hole (13).

9. A gas field reinjection pump plunger sewage barrier device as claimed in claim 7, characterized in that: A plurality of liquid collecting grooves (7) are arranged on one side of the first baffle plate (1) and / or the second baffle plate (2) that is away from each other.

10. A gas field reinjection pump plunger sewage barrier device as claimed in claim 7, characterized in that: A side surface of the first baffle plate (1) and the second baffle plate (2) that are close to each other is arranged as a plane, and a side surface of the first baffle plate (1) and the second baffle plate (2) that are far away from each other is arranged with a plurality of stiffening ribs (8), and the plurality of stiffening ribs (8) are radially distributed around the through hole (13).

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