Plunger pump plunger surface anti-corrosion device

Abstract

The utility model relates to the technical field of corrosion prevention of plunger pumps for oil fields, in particular to a plunger pump plunger surface corrosion prevention device. According to the technical scheme, a plunger rotating fixing body is installed on one side of an inner cavity of a main box body, a plunger supporting body is installed on the other side of the inner cavity of the main box body, the plunger supporting body is matched with the plunger rotating fixing body to drive a plunger to rotate, and a plasma surfacing gun is installed above the end of the plunger. The plasma surfacing gun is connected to the outer side of the mounting disc through the surfacing gun connecting bolt, the powder feeder is mounted on one side of the plasma surfacing gun, the mounting disc is mounted at the outer end of the surfacing gun transverse supporting rod, the inner end of the surfacing gun transverse supporting rod is movably connected with the longitudinal supporting rod, and the upper end of the longitudinal supporting rod is in sliding fit with the sliding rail. The utility model has the beneficial effects that not only can the abraded plunger be effectively repaired, but also a firm protective layer can be formed on the surface of the plunger, so that the corrosion of corrosive substances is resisted, and the service life of the plunger is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of anti-corrosion of plunger pumps for oil fields, in particular to an anti-corrosion device for the surface of a plunger of a plunger pump. Background Art

[0002] In today's oil industry, oilfield water injection technology has become an important means to improve oil recovery and maintain stable production in oil fields. During the water injection process, the plunger, as the core component of the water injection pump, is subjected to the impact of high-pressure and high-flow water injection, and at the same time has to deal with complex and changeable water quality environments. Since the injection water may contain various corrosive substances and solid particles, these substances form deposits on the surface of the plunger, which not only increases the wear rate of the plunger, but also may cause corrosion problems, seriously affecting the service life of the plunger and the water injection efficiency. Utility Model Content

[0003] The purpose of the utility model is to address the above-mentioned defects in the prior art and to provide a plunger pump plunger surface anti-corrosion device. By performing plasma surfacing on the outer surface of the plunger, not only can the worn plunger be effectively repaired, but also a solid protective layer can be formed on the surface of the plunger to resist erosion by corrosive substances and extend the service life of the plunger.

[0004] The utility model discloses a plunger pump plunger surface anti-corrosion device, the technical scheme of which is: comprising a main box (1), a sliding door (2), a lower box (3), a plunger rotating fixed body (4), a plunger support body (5), a plasma cladding gun (6), a cladding gun transverse support rod (7), a longitudinal support rod (8), a slide rail (9), a cladding gun connecting bolt (10), a plunger (12), a mounting plate (13) and a powder feeder (14), wherein the main box (1) is mounted on the upper side of the lower box (3), one or more sliding doors (2) are mounted on the outer side of the main box (1), the plunger rotating fixed body (4) is mounted on one side of the inner cavity of the main box (1), and the plunger supporting body (5) is mounted on the inner side of the main box (1). A plunger support body (5) is installed on the other side, and the plunger support body (5) cooperates with the plunger rotation fixing body (4) to drive the plunger (12) to rotate. A plasma cladding gun (6) is installed above the end of the plunger (12). The plasma cladding gun (6) is connected to the outside of the mounting plate (13) through a cladding gun connecting bolt (10), and a powder feeder (14) is installed on one side of the plasma cladding gun (6). The mounting plate (13) is installed on the outer end of a cladding gun transverse support rod (7). The inner end of the cladding gun transverse support rod (7) is movably connected to a longitudinal support rod (8), and the upper end of the longitudinal support rod (8) is slidably matched with a slide rail (9).

[0005] Preferably, at least one perspective window (11) is provided in the middle of the sliding door (2), and the lens of the perspective window (11) is a welding filter lens.

[0006] Preferably, the plasma cladding gun (6) comprises a gas shield (6.1), a copper nozzle locking ring (6.2), a copper nozzle (6.3), a centering ring (6.4), a cladding gun body (6.5), a tungsten electrode (6.6), a tungsten electrode clamp (6.7), and a gun cap (6.8); the tungsten electrode (6.6) is installed on the cladding gun body (6.5), the tungsten electrode clamp (6.7) is installed in the middle of the tungsten electrode (6.6), and the gun cap (6.8) is installed on the top of the tungsten electrode (6.6); the copper nozzle (6.3) is installed on the lower side of the cladding gun body (6.5) through the centering ring (6.4), and the lower side of the copper nozzle (6.3) is installed through the copper nozzle locking ring (6.2).

[0007] Preferably, a gas protection cover (6.1) is installed on the lower side of the copper nozzle locking ring (6.2).

[0008] Preferably, the powder feeder (14) comprises an air inlet (14.1), a powder outlet (14.2), a powder adding hole (14.3), a powder storage chamber (14.4), and a powder feeder body (14.5); a powder storage cylinder (14.4) is installed on the upper part of the powder feeder body (14.5); the powder adding hole (14.3) is installed on the top of the powder storage cylinder (14.4); an air inlet (14.1) is provided on one side of the upper end of the powder feeder body (14.5); and a powder outlet (14.2) is provided on one side of the lower end.

[0009] Preferably, a powder discharge valve (14.7) is installed in the middle of the lower end of the powder feeder body (14.5), and an observation hole (14.6) is provided on the front outer wall of the powder feeder body (14.5).

[0010] The beneficial effect of the utility model is as follows: the utility model installs one end of the plunger on the outside of the plunger rotation fixing body, and the other end is supported and connected to the plunger support body. Under the rotation drive of the plunger rotation fixing body, the plunger is slowly driven to rotate. At this time, the position and height of the plasma cladding gun are adjusted so that the lower copper nozzle of the plasma cladding gun is located above the outer end of the plunger. Then, the plasma cladding gun is turned on to perform cladding on the surface of the plunger in turn. The utility model can not only effectively repair the worn plunger, but also form a solid protective layer on the surface of the plunger to resist the erosion of corrosive substances and extend the service life of the plunger. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the structure of the utility model without the plunger installed;

[0012] Figure 2 This is a schematic diagram of the structure of the utility model after the plunger is installed;

[0013] Figure 3 It is a schematic diagram of the structure of a plasma cladding gun;

[0014] Figure 4 It is a schematic diagram of the structure of the powder feeder;

[0015] In the above figure: main box 1, sliding door 2, lower box 3, plunger rotating fixed body 4, plunger support body 5, plasma cladding gun 6, cladding gun transverse support rod 7, longitudinal support rod 8, slide rail 9, cladding gun connecting bolt 10, perspective window 11, plunger 12, mounting plate 13, powder feeder 14, gas protection cover 6.1, copper nozzle locking ring 6.2, copper nozzle 6.3, centering ring 6.4, cladding gun body 6.5, tungsten electrode 6.6, tungsten electrode clamp 6.7, gun cap 6.8, air inlet 14.1, powder outlet 14.2, powder adding hole 14.3, powder storage chamber 14.4, powder feeder body 14.5, observation hole 14.6, powder discharge valve 14.7. DETAILED DESCRIPTION

[0016] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0017] Example 1, reference Figure 1-Figure 4 The utility model mentions a plunger pump plunger surface anti-corrosion device, comprising a main box 1, a sliding door 2, a lower box 3, a plunger rotating fixed body 4, a plunger support body 5, a plasma cladding gun 6, a cladding gun transverse support rod 7, a longitudinal support rod 8, a slide rail 9, a cladding gun connecting bolt 10, a plunger 12, a mounting plate 13 and a powder feeder 14, wherein the main box 1 is installed on the upper side of the lower box 3, one or more sliding doors 2 are installed on the outer side of the main box 1, a plunger rotating fixed body 4 is installed on one side of the inner cavity of the main box 1, and a plunger rotating fixed body 4 is installed on the other side. The plunger support body 5 cooperates with the plunger rotation fixing body 4 and drives the plunger 12 to rotate. A plasma cladding gun 6 is installed above the end of the plunger 12. The plasma cladding gun 6 is connected to the outer side of the mounting plate 13 through the cladding gun connecting bolt 10, and a powder feeder 14 is installed on one side of the plasma cladding gun 6. The mounting plate 13 is installed on the outer end of the cladding gun transverse support rod 7. The inner end of the cladding gun transverse support rod 7 is movably connected to the longitudinal support rod 8, and the upper end of the longitudinal support rod 8 is slidably matched with the slide rail 9.

[0018] Reference Figure 3 The plasma cladding gun 6 mentioned in the utility model includes a gas protection cover 6.1, a copper nozzle locking ring 6.2, a copper nozzle 6.3, a centering ring 6.4, a cladding gun body 6.5, a tungsten electrode 6.6, a tungsten electrode clamp 6.7, and a gun cap 6.8. The cladding gun body 6.5 is equipped with a tungsten electrode 6.6, a tungsten electrode clamp 6.7 is installed in the middle of the tungsten electrode 6.6, and a gun cap 6.8 is installed on the top of the tungsten electrode 6.6; the copper nozzle 6.3 is installed on the lower side of the cladding gun body 6.5 through the centering ring 6.4, and the lower side of the copper nozzle 6.3 is installed through the copper nozzle locking ring 6.2.

[0019] Wherein, a gas protection cover 6.1 is installed on the lower side of the copper nozzle locking ring 6.2.

[0020] Reference Figure 4 The powder feeder 14 mentioned in the utility model includes an air inlet hole 14.1, a powder outlet hole 14.2, a powder adding hole 14.3, a powder storage chamber 14.4, and a powder feeder body 14.5. The upper part of the powder feeder body 14.5 is installed with a powder storage cylinder 14.4, and the top of the powder storage cylinder 14.4 is installed with the powder adding hole 14.3. The upper end side of the powder feeder body 14.5 is provided with an air inlet hole 14.1, and the lower end side is provided with a powder outlet hole 14.2.

[0021] Among them, a powder discharge valve 14.7 is installed in the middle of the lower end of the above-mentioned powder feeder body 14.5, and an observation hole 14.6 is provided on the front outer wall of the powder feeder body 14.5 to facilitate observation of the powder feeding situation. If there is a fault, the powder discharge valve 14.7 can be removed for cleaning and repair.

[0022] When the utility model is used, one end of the plunger 12 is installed on the outside of the plunger rotating fixed body 4, and the other end is supported and connected to the plunger support body 5. Under the rotation drive of the plunger rotating fixed body 4, the plunger 12 is slowly driven to rotate. At this time, the position and height of the plasma cladding gun 6 are adjusted so that the lower copper nozzle of the plasma cladding gun 6 is located above the outer end of the plunger 12. Then, the plasma cladding gun 6 is turned on, and the surface of the plunger 12 is sequentially cladding. Powder is fed through the powder feeder 14 until the surface of the entire plunger 12 is clad. The perfect combination of the cladding layer and the plunger substrate is ensured, and the overall strength and wear resistance of the plunger are improved. The utility model can effectively repair the worn plunger through the application of plasma cladding technology, and can also form a solid protective layer on the surface of the plunger to resist the erosion of corrosive substances and extend the service life of the plunger.

[0023] Embodiment 2, a plunger pump plunger surface anti-corrosion device mentioned in the utility model, comprises a main box body 1, a sliding door 2, a lower box body 3, a plunger rotating fixed body 4, a plunger support body 5, a plasma cladding gun 6, a cladding gun transverse support rod 7, a longitudinal support rod 8, a slide rail 9, a cladding gun connecting bolt 10, a plunger 12, a mounting plate 13 and a powder feeder 14, wherein the main box body 1 is mounted on the upper side of the lower box body 3, one or more sliding doors 2 are mounted on the outer side of the main box body 1, a plunger rotating fixed body 4 is mounted on one side of the inner cavity of the main box body 1, and a plunger rotating fixed body 4 is mounted on the other side. A plunger support body 5 is installed, and the plunger support body 5 cooperates with the plunger rotation fixing body 4 to drive the plunger 12 to rotate. A plasma cladding gun 6 is installed above the end of the plunger 12. The plasma cladding gun 6 is connected to the outer side of the mounting plate 13 through the cladding gun connecting bolt 10, and a powder feeder 14 is installed on one side of the plasma cladding gun 6. The mounting plate 13 is installed at the outer end of the cladding gun transverse support rod 7, and the inner end of the cladding gun transverse support rod 7 is movably connected to the longitudinal support rod 8, and the upper end of the longitudinal support rod 8 is slidably matched with the slide rail 9.

[0024] The difference from Example 1 is:

[0025] The sliding door 2 of the present invention is provided with one or more perspective windows 11 in the middle, and the lens of the perspective window 11 adopts a welding filter lens, which is convenient for observing the surfacing condition of the plunger, and the welding filter lens can effectively protect the eyes of the observer.

[0026] The above is only a preferred embodiment of the utility model. Any person skilled in the art may modify the utility model by using the above technical solution or modify it into an equivalent technical solution. Therefore, any simple modification or equivalent transformation based on the technical solution of the utility model shall fall within the scope of protection claimed by the utility model.

Claims

1. A plunger pump plunger surface anti-corrosion device, characterized by: The invention comprises a main box (1), a sliding door (2), a lower box (3), a plunger rotating fixed body (4), a plunger supporting body (5), a plasma cladding gun (6), a cladding gun transverse supporting rod (7), a longitudinal supporting rod (8), a slide rail (9), a cladding gun connecting bolt (10), a plunger (12), a mounting plate (13) and a powder feeder (14), wherein the main box (1) is mounted on the upper side of the lower box (3), one or more sliding doors (2) are mounted on the outer side of the main box (1), a plunger rotating fixed body (4) is mounted on one side of the inner cavity of the main box (1), and a plunger supporting body (5) is mounted on the other side, The plunger support body (5) cooperates with the plunger rotation fixing body (4) and drives the plunger (12) to rotate. A plasma cladding gun (6) is installed above the end of the plunger (12). The plasma cladding gun (6) is connected to the outside of the mounting plate (13) through a cladding gun connecting bolt (10), and a powder feeder (14) is installed on one side of the plasma cladding gun (6). The mounting plate (13) is installed on the outer end of a cladding gun transverse support rod (7). The inner end of the cladding gun transverse support rod (7) is movably connected to a longitudinal support rod (8), and the upper end of the longitudinal support rod (8) is slidably matched with a slide rail (9).

2. The plunger pump plunger surface anti-corrosion device according to claim 1 is characterized in that: One or more perspective windows (11) are provided in the middle of the sliding door (2), and the lenses of the perspective windows (11) are welded filter lenses.

3. The plunger pump plunger surface anti-corrosion device according to claim 2, characterized in that: The plasma cladding gun (6) comprises a gas protection cover (6.1), a copper nozzle locking ring (6.2), a copper nozzle (6.3), a centering ring (6.4), a cladding gun body (6.5), a tungsten electrode (6.6), a tungsten electrode clamp (6.7), and a gun cap (6.8); the tungsten electrode (6.6) is installed on the cladding gun body (6.5), the tungsten electrode clamp (6.7) is installed in the middle of the tungsten electrode (6.6), and the gun cap (6.8) is installed on the top of the tungsten electrode (6.6); the copper nozzle (6.3) is installed on the lower side of the cladding gun body (6.5) through the centering ring (6.4), and the lower side of the copper nozzle (6.3) is installed through the copper nozzle locking ring (6.2).

4. The plunger pump plunger surface anti-corrosion device according to claim 3 is characterized in that: A gas protection cover (6.1) is installed on the lower side of the copper nozzle locking ring (6.2).

5. The plunger pump plunger surface anti-corrosion device according to claim 1 is characterized in that: The powder feeder (14) comprises an air inlet (14.1), a powder outlet (14.2), a powder adding hole (14.3), a powder storage chamber (14.4), and a powder feeder body (14.5). A powder storage cylinder is installed on the upper part of the powder feeder body (14.5), and the powder adding hole (14.3) is installed on the top of the powder storage cylinder. An air inlet (14.1) is provided on one side of the upper end of the powder feeder body (14.5), and a powder outlet (14.2) is provided on one side of the lower end.

6. The plunger pump plunger surface anti-corrosion device according to claim 5, characterized in that: A powder discharge valve (14.7) is installed in the middle of the lower end of the powder feeder body (14.5), and an observation hole (14.6) is provided on the front outer wall of the powder feeder body (14.5).

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