CN216788316U

CN216788316U - Anticorrosion spray-welding polish rod bushing for oil pumping equipment

Info

Publication number: CN216788316U
Application number: CN202123083950.XU
Authority: CN
Inventors: 高环; 侯西康; 李羚; 高佃生
Original assignee: Zibo Hongyang Petroleum Equipment Group Co ltd; ZIBO HONGYANG WEATHERFORD OILFIELD EQUIPMENT CO LTD
Current assignee: Zibo Hongyang Petroleum Equipment Group Co ltd; ZIBO HONGYANG WEATHERFORD OILFIELD EQUIPMENT CO LTD
Priority date: 2021-12-09
Filing date: 2021-12-09
Publication date: 2022-06-21
Anticipated expiration: 2031-12-09

Abstract

The utility model discloses an anti-corrosion spray-welding polish rod bushing for oil pumping equipment, which relates to the field of oil pumping equipment and comprises a spray-welding bushing, wherein a nickel-based alloy powder spray-welding layer is spray-welded on the outer surface of the spray-welding bushing; the inner diameter of the spray welding lining is sprayed with antirust paint; the spray welding device is characterized by also comprising a liner head and a connector, wherein the liner head is provided with an internal thread matched with the liner thread of the spray welding liner, the spray welding liner is arranged in the liner head, and the tail end of the liner head is fixedly welded with the spray welding liner; the bushing head is installed in the connector in a threaded mode. The outer surface of the spray-welded bushing is a coarse sand surface, the nickel-based alloy powder spray-welding layer is spray-welded on the outer surface of the spray-welded bushing, and the nickel-based alloy powder is spray-welded on the surface of the spray-welded bushing, so that the corrosion resistance is improved, the service life is prolonged, and the oil extraction cost is reduced; the inner diameter of the spray-welded lining is sprayed with antirust paint; the spray welding lining has corrosion resistance and long service life, and is suitable for oil extraction systems of oil wells with corrosion.

Description

Anticorrosion spray-welding polish rod bushing for oil pumping equipment

Technical Field

The utility model relates to the field of pumping equipment, in particular to an anti-corrosion spray-welded polish rod bushing for pumping equipment.

Background

The pumping unit system has a history of more than 100 years, and with the rapid development of the petroleum industry, the pumping unit has been developed into a multifunctional pumping unit from a conventional beam-pumping unit, and can meet the pumping requirements of different fields. The current oil extraction technology comprises a sucker-rod pump, an electric submersible pump, a hydraulic pump, a gas lift and the like. The pumping process of the sucker-rod pump is the earliest and most widely applied manual lifting method, the pumping equipment of the sucker-rod pump is continuously perfected along with the continuous development of the technology, and the sucker-rod pump still occupies the leading position in various manual lifting oil extraction methods. On land, there are about 14 ten thousand oil wells in China, and more than 75% of oil wells use a sucker-rod pump oil production mode. Oil fields around the world are millions of wells, and except for the self-blowing well in the middle east, the oil field mostly adopts a sucker rod pump oil production technology. In recent years, the scale of the application of the oil pumping equipment matched with the oil pumping system in the oil pumping well is continuously enlarged.

The polish rod bushing is a tubular member installed inside the polish rod and the stuffing box in the rod-pumped well and sealed by means of a seal inside the polish rod and the stuffing box. In an oil extraction system, a deep and corroded oil well is often encountered, and the existing polished rod bushing does not meet the requirement of a high-corrosion oil well in oil extraction.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an anti-corrosion spray-welded polish rod bushing for oil pumping equipment, which solves the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme:

an anti-corrosion spray-welding polish rod bushing for oil pumping equipment comprises a spray-welding bushing, wherein a nickel-based alloy powder spray-welding layer is spray-welded on the outer surface of the spray-welding bushing; the inner diameter of the spray welding lining is sprayed with antirust paint; the spray welding device is characterized by also comprising a liner head and a connector, wherein the liner head is provided with an internal thread matched with the liner thread of the spray welding liner, the spray welding liner thread is arranged in the liner head, and the tail end of the liner head is fixedly welded with the spray welding liner; the bushing head is installed in the connector in a threaded mode.

As a still further scheme of the utility model: the outer surface of the spray welding lining is a coarse sand surface.

As a still further scheme of the utility model: the nickel-based alloy powder spray welding layer is an induction remelting layer.

As a still further scheme of the utility model: the outer surface of the nickel-based alloy powder spray welding layer is a polished surface.

As a still further scheme of the utility model: and the end part of the spray welding bush is processed with bush threads.

As a still further scheme of the utility model: the connector is embedded to be equipped with bush head complex rubber circle.

As a still further scheme of the utility model: the connecting head is provided with a threaded hole which penetrates through the connecting head, and a fastening bolt is connected in the threaded hole in a threaded manner.

As a still further scheme of the utility model: the screw hole is provided with two and two screw hole vertical distribution.

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

1. the outer surface of the spray welding bush is a coarse sand surface, the nickel-based alloy powder spray welding layer is spray welded on the outer surface of the spray welding bush, and the nickel-based alloy powder is spray welded on the surface of the spray welding bush, so that the corrosion resistance is improved, the service life is prolonged, and the oil extraction cost is reduced;

2. the inner diameter of the spray-welded lining is sprayed with antirust paint; the spray welding lining has corrosion resistance and long service life, and is suitable for oil extraction systems of oil wells with corrosion;

3. the spray welding lining is installed in the lining head in a threaded mode, the tail end of the lining head is fixedly welded with the spray welding lining, and the connection strength is guaranteed through a threaded connection mode and a welding mode;

4. the sealing performance of the connection between the bushing head and the connector is ensured by arranging the rubber ring;

5. set up the screw hole that runs through the setting on the connector, screw hole female connection has fastening bolt, and it can be fixed with the member to screw up fastening bolt behind the member insertion connector, and simple to operate is swift.

Drawings

Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention.

Fig. 2 is a schematic structural diagram at a in embodiment 1 of the present invention.

Fig. 3 is a schematic structural diagram of embodiment 2 of the present invention.

Notations for reference numerals: 1-spray welding of a lining, 11-lining threads, 12-nickel base alloy powder spray welding layers, 13-antirust paint, 2-lining heads, 3-rubber rings, 4-connectors, 5-threaded holes and 6-fastening bolts.

Detailed Description

The present invention will be described in detail with reference to the following embodiments, wherein like or similar elements are designated by the same reference numerals, and wherein, in practice, the shape, thickness or height of the various elements may be increased or decreased. The examples are given only for illustrating the present invention and are not intended to limit the scope of the present invention. Any obvious modifications or variations can be made to the present invention without departing from the spirit or scope of the present invention.

Example 1

Referring to fig. 1-2, in an embodiment of the present invention, an anti-corrosion spray-welded polish rod bushing for oil pumping equipment includes a spray-welded bushing 1, wherein the spray-welded bushing 1 is made of high-quality carbon structural steel 1020; a liner thread 11 is processed at the end part of the spray welding liner 1; the outer surface of the spray welding bush 1 is a coarse sand surface, the nickel-based alloy powder spray welding layer 12 is spray welded on the outer surface of the spray welding bush 1, and the nickel-based alloy powder is spray welded on the surface of the spray welding bush 1, so that the corrosion resistance is improved, the service life is prolonged, and the oil extraction cost is reduced; the nickel-based alloy powder spray welding layer 12 is an induction remelting layer, and the outer surface of the nickel-based alloy powder spray welding layer 12 is a polished surface; before spray welding, firstly, performing coarse sanding on the outer surface of the spray welding bush 1 to improve the adhesive force of the nickel-based alloy powder spray welding layer 12, performing spray welding after the coarse sanding is completed, performing induction remelting after the spray welding, and finally performing abrasive belt grinding and polishing on the nickel-based alloy powder spray welding layer 12; the inner diameter of the spray welding bush 1 is sprayed with antirust paint 13; the spray welding bush 1 has corrosion resistance and long service life, and is suitable for oil extraction systems of oil wells with corrosion.

Example 2

Referring to fig. 3, on the basis of embodiment 1, the welding device further includes a liner head 2 and a connector 4, the liner head 2 is provided with an internal thread matched with a liner thread 11 of the spray welding liner 1, the spray welding liner 1 is installed in the liner head 2 in a threaded manner, the tail end of the liner head 2 is welded and fixed with the spray welding liner 1, and the connection strength is ensured in a threaded connection and welding dual mode;

the bushing head 2 is arranged in the connector 4 in a threaded manner, and the rubber ring 3 matched with the bushing head 2 is embedded in the connector 4, so that the sealing property of the connection between the bushing head 2 and the connector 4 is ensured; the connector 4 is provided with a threaded hole 5 which penetrates through the connector, the threaded hole 5 is internally threaded with a fastening bolt 6, when the connector 4 is connected with a rod piece, the rod piece is inserted into the connector 4 and then the fastening bolt 6 is screwed down, so that the rod piece can be fixed, and the installation is convenient and rapid; preferably, the threaded holes 5 are provided with two and two threaded holes 5 vertically distributed, so as to further ensure the connection reliability of the fastening bolts 6.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. An anti-corrosion spray-welding polish rod bushing for oil pumping equipment comprises a spray-welding bushing (1) and is characterized in that a nickel-based alloy powder spray-welding layer (12) is sprayed and welded on the outer surface of the spray-welding bushing (1); the inner diameter of the spray welding bush (1) is sprayed with antirust paint (13);

the spray welding device is characterized by further comprising a liner head (2) and a connector (4), wherein the liner head (2) is provided with an internal thread matched with a liner thread (11) of the spray welding liner (1), the spray welding liner (1) is installed in the liner head (2) in a threaded manner, and the tail end of the liner head (2) is fixedly welded with the spray welding liner (1); the bushing head (2) is arranged in the connector (4) in a threaded manner.

2. The corrosion-resistant spray-welded polish rod bushing for an oil pumping device according to claim 1, wherein the outer surface of the spray-welded bushing (1) is a coarse sand surface.

3. The corrosion-resistant spray-welded polish rod bushing for an oil pumping device according to claim 2, wherein the nickel-based alloy powder spray-welded layer (12) is an induction-remelted layer.

4. The corrosion-resistant spray-welded polish rod bushing for oil pumping equipment according to claim 3, wherein the outer surface of the nickel-based alloy powder spray-welding layer (12) is a polished surface.

5. The corrosion-proof spray-welded polish rod bushing for oil pumping equipment according to claim 1, wherein the end of the spray-welded bushing (1) is machined with a bushing thread (11).

6. The corrosion-proof spray-welded polish rod bushing for the oil pumping equipment according to any one of claims 1 to 5, wherein a rubber ring (3) matched with the bushing head (2) is embedded in the connecting head (4).

7. The corrosion-resistant spray-welded polish rod bushing for the oil pumping equipment according to claim 6, wherein a threaded hole (5) is formed in the connector (4) in a penetrating manner, and a fastening bolt (6) is connected to an internal thread of the threaded hole (5).

8. The corrosion-resistant spray-welded polish rod bushing for oil well equipment according to claim 7, wherein the threaded hole (5) is provided with two and two threaded holes (5) vertically distributed.