CN209990481U - Petroleum screen pipe convenient to clean - Google Patents

Abstract

The utility model discloses an oil screen pipe convenient to clean, which comprises an outer screen pipe and an inner screen pipe, wherein the outer screen pipe is sleeved outside the inner screen pipe, and the inner screen pipe is rotationally connected with the outer screen pipe through a bearing; the outer side wall of the inner sieve tube is provided with a spiral scraper, a brush roller is arranged in the inner sieve tube, a polished rod part at the lower end of the brush roller penetrates out of the mounting hole and is provided with a fixed rod, two ends of the fixed rod are connected with the inner side wall of the outer sieve tube, a connecting shaft is arranged at the central axis of the top of the inner sieve tube and is connected with the inner sieve tube through a supporting rod, and the connecting shaft extends out of the inner sieve tube; the utility model discloses simple structure, convenient to use, reasonable in design uses in a flexible way, improves work efficiency and cleaning performance.

Description

An easy-to-clean oil screen

technical field

The utility model relates to the technical field of oil exploitation, in particular to an oil screen pipe which is convenient for cleaning.

Background technique

The screen is a special pipe installed at the lower end of the oil well to separate the extracted oil from the sand and gravel in the formation. The structure of the current oil screen is too simple, and the strip or hole screen is generally processed on the surface of the pipe, and some screens are made of stainless steel wire wound after punching. After the oil screen has been used for a period of time, due to the blockage caused by the deposition of impurities, the screen usually needs to be replaced or cleaned. At present, when the screen is replaced and cleaned on the market, the oil pipeline needs to be cut off and closed, and then the screen is removed. The size is long, some as long as 10 meters to 13 meters, and the cleaning is difficult, especially the cleaning of the inner surface of the screen tube is very inconvenient. At present, only manual cleaning can be used in China, which has low efficiency and poor cleaning effect.

Utility model content

The purpose of this utility model is to provide a kind of oil screen pipe which is convenient for cleaning, aiming at the above-mentioned deficiencies of the prior art.

In order to solve the above-mentioned problems, the technical scheme adopted by the present utility model is:

An easy-to-clean oil screen tube includes an outer screen tube and an inner screen tube, the outer screen tube is sleeved outside the inner screen tube, and the inner screen tube and the outer screen tube are rotatably connected through a bearing; The outer side wall of the inner screen tube is provided with a spiral scraper, and the outer edge of the spiral scraper is in contact with the inner wall of the outer screen tube. The inner screen tube is a pipe body with an open upper end and a closed lower end. A mounting hole is opened on the bottom wall of the inner screen tube, and a brush roller is arranged in the inner screen tube. The end is connected with the inner side wall of the outer screen tube, the central axis of the top of the inner screen tube is provided with a connecting shaft, and the connecting shaft is connected with the inner screen tube through a support rod, and one end of the support rod is connected to the inner screen tube. The connecting shaft is connected, the other end of the support rod is connected with the inner side wall of the inner screen tube, and the connecting shaft extends out of the inner screen tube.

Further, a sealing ring is arranged between the outer screen tube and the inner screen tube, the sealing ring is located on the upper part of the outer screen tube and the inner screen tube, and the bearing is embedded in the inner screen of the sealing ring. On the ring wall, the bearing is sleeved on the outer side wall of the inner screen tube, and the inner screen tube is rotatably connected with the outer screen tube through the bearing.

Further, a fixing groove adapted to the fixing rod is provided on the inner side wall of the lower end of the outer screen tube, and both ends of the fixing rod are embedded in the fixing groove.

Further, sieve holes are evenly distributed on the tube walls of the outer sieve tube and the inner sieve tube, and the sieve hole diameter on the side wall of the inner sieve tube is smaller than the sieve hole diameter on the side wall of the outer sieve tube.

Further, threads are provided on the outer side walls of the upper end and the lower end of the outer screen tube.

The beneficial effects produced by the above technical solutions are:

In the utility model, the inner sieve tube is rotatably connected with the outer sieve tube through the bearing, the spiral scraper is arranged on the outer side wall of the inner sieve tube, and the brush roller is arranged in the inner sieve tube. The screen tube is removed and erected on the cleaning frame. The end of the screen tube with the connecting shaft is connected to the output shaft of the motor through a coupling. When the motor drives the inner screen tube to rotate through the connecting shaft, the outer screen tube and the brush roller do not move. , During the rotation of the inner screen tube, the spiral scraper can scrape the blockage on the inner wall of the outer screen tube, and the brush roller can clean the inner wall of the inner screen tube, and only need to use high-pressure water to clean the outer wall of the screen tube manually; The utility model has the advantages of simple structure, convenient use, reasonable design, flexible application, and improved work efficiency and cleaning effect.

Description of drawings

Fig. 1 is the perspective view of the present utility model;

Fig. 2 is the sectional view of the present utility model;

3 is a schematic diagram of the structure of the domestic and foreign screen tubes of the present utility model;

Fig. 4 is the structural representation of inner screen pipe in the utility model;

Fig. 5 is another angle structure schematic diagram of inner screen tube in the present utility model;

Figure 6 is a schematic diagram of the structure of the brush roller in the present invention.

In the figure: 1. Outer screen tube; 2. Inner screen tube; 3. Bearing; 4. Spiral scraper; 5. Brush roller; 6. Fixed rod; 7. Connecting shaft; 8. Support rod; ; 10. Fixed groove; 11. Thread.

Detailed ways

The embodiments of the present utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

As shown in Figures 1-6, it is a specific embodiment of the present utility model, an oil screen pipe that is easy to clean, comprising an outer screen pipe 1 and an inner screen pipe 2, and the outer screen pipe 1 is sleeved on the Outside the inner screen tube 2, a sealing ring 9 is fixed between the outer screen tube 1 and the inner screen tube 2, and the sealing ring 9 is located in the upper part of the outer screen tube 1 and the inner screen tube 2 without sieve holes. The position of the sealing ring 9 can be embedded on the inner side wall of the outer screen tube 1, the bearing 3 is embedded on the inner ring wall of the sealing ring 9, and the bearing 3 is sleeved on the outer side of the inner screen tube 2 On the wall, the inner screen tube 2 is rotatably connected with the outer screen tube 1 through the bearing 3; the outer side wall of the inner screen tube 2 is provided with a spiral scraper 4, and the outer edge of the spiral scraper 4 In contact with the inner side wall of the outer screen tube 1, when the inner screen tube 2 rotates, the spiral scraper 4 can scrape the inner wall of the outer screen tube 1, and the inner screen tube 2 is a tube body with an open upper end and a closed lower end, The screen tube 2 can be composed of a pipe body and a bottom cover threaded connection or snap connection, the bottom wall of the inner screen tube 2 is provided with a mounting hole, and the inner screen tube 2 is provided with a brush roller 5. After the polished rod part of the lower end of the brush roller 5 passes through the installation hole, a fixing rod 6 is provided. The fixing rod 6 can be fixedly connected with the polished rod part of the lower end of the brush roller 5 through screws. Inward sliding or rotation, the two ends of the fixed rod 6 are connected with the inner side wall of the outer screen pipe 1, and the inner side wall of the lower end of the outer screen pipe 1 is provided with two matching with the fixed rod 6. Fixing groove 10, the two ends of the fixing rod 6 are embedded in the fixing groove 10 and fixed; the central axis of the top of the inner screen tube 2 is provided with a connecting shaft 7, and the connecting shaft 7 passes through three evenly distributed The support rod 8 is connected with the inner screen pipe 2, one end of each of the support rods 8 is connected with the connecting shaft 7, and the other end of the support rod 8 is connected with the inner side wall of the inner screen pipe 2, so the The connecting shaft 7 extends out of the inner screen tube 2 .

Further, the wall of the outer screen tube 1 and the inner screen tube 2 is evenly distributed with sieve holes, and the sieve hole aperture on the side wall of the inner screen tube 2 is smaller than the sieve hole on the side wall of the outer screen tube 1. Aperture.

Further, threads 11 are provided on the outer side walls of the upper end and the lower end of the outer screen tube 1 . During installation, the upper end of the outer screen 1 is connected to the oil pump through a flange with internal threads, oil pipes, etc., and the lower end of the outer screen 1 is connected to the grit chamber through a flange with internal threads.

The use method of the utility model: when the screen tube needs to be replaced and cleaned, it is only necessary to remove the screen tube and set it up on the cleaning rack. When the inner screen tube 2 is driven by the connecting shaft 7 to rotate, the outer screen tube 1 and the brush roller 5 do not move. During the rotation of the inner screen tube 2, the spiral scraper 4 can scrape the blockage and sediment on the inner side wall of the outer screen tube 1. At the same time, the brush roller 5 can clean the inner side wall of the inner screen tube 2, and the worker only needs to use high-pressure water to clean the outer wall of the screen tube, which is easy to operate, has high cleaning efficiency and good cleaning effect.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, but not to limit them; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements to some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions in the embodiments of the present invention. .

Claims (5)

1. An easy-to-clean oil screen, characterized in that it comprises an outer screen (1) and an inner screen (2), the outer screen (1) being sleeved outside the inner screen (2) , the inner screen tube (2) and the outer screen tube (1) are rotatably connected through a bearing (3); a spiral scraper (4) is arranged on the outer side wall of the inner screen tube (2), and the spiral The outer edge of the scraper (4) is in contact with the inner side wall of the outer screen tube (1), the inner screen tube (2) is a pipe body with an open upper end and a closed lower end, and the bottom of the inner screen tube (2) A mounting hole is opened on the wall, a brush roller (5) is arranged in the inner screen tube (2), and a fixed rod (6) is arranged after the polished rod part of the lower end of the brush roller (5) passes through the mounting hole. ), the two ends of the fixing rod (6) are connected with the inner side wall of the outer screen tube (1), and the central axis of the top of the inner screen tube (2) is provided with a connecting shaft (7), the connecting shaft (7) is connected with the inner screen pipe (2) through a support rod (8), one end of the support rod (8) is connected with the connecting shaft (7), and the other end of the support rod (8) is connected with the connecting shaft (7). The inner side walls of the inner screen tube (2) are connected, and the connecting shaft (7) extends out of the inner screen tube (2). 2. The easy-to-clean oil screen according to claim 1, characterized in that a sealing ring (9) is arranged between the outer screen (1) and the inner screen (2), so The sealing ring (9) is located on the upper part of the outer screen tube (1) and the inner screen tube (2), the bearing (3) is embedded on the inner ring wall of the sealing ring (9), and the bearing (3) is sleeved on the outer side wall of the inner screen tube (2), and the inner screen tube (2) is rotatably connected to the outer screen tube (1) through the bearing (3). 3. The easy-to-clean oil screen according to claim 1, characterized in that, a fixing rod (6) is provided on the inner side wall of the lower end of the outer screen (1) A groove (10), both ends of the fixing rod (6) are embedded in the fixing groove (10). 4. The easy-to-clean oil screen according to claim 1, characterized in that sieve holes are evenly distributed on the pipe walls of the outer screen (1) and the inner screen (2), and the inner The sieve hole diameter on the side wall of the sieve tube (2) is smaller than the sieve hole diameter on the side wall of the outer sieve tube (1). 5 . The easy-to-clean oil screen according to claim 1 , wherein threads ( 11 ) are provided on the outer side walls of the upper and lower ends of the outer screen ( 1 ). 6 .

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