An adjustable experimental nozzle

Abstract

This utility model relates to an adjustable experimental nozzle, mainly used for flow experiments inside a pipeline. An adjustable experimental nozzle includes a pipe section connected to an experimental pipeline at both ends; the pipe section includes an outer pipe and an inner pipe fitted together; characterized in that a nozzle is provided inside the inner pipe, the front section of the nozzle is fixed by a front positioning device, and the rear section of the nozzle is fixed by a rear positioning device, with a flexible seal between the nozzle and the rear positioning device; the nozzle moves radially and circumferentially between the front and rear positioning devices; at the front section of the nozzle, a radial adjustment assembly is provided from the outside of the outer pipe to the inside of the inner pipe; at the rear section of the nozzle, a circumferential adjustment assembly is provided from the outside of the outer pipe to the inside of the inner pipe; both the radial and circumferential adjustment assemblies are tangent to the nozzle. This utility model allows adjustment of the nozzle jet angle by pushing the radial and circumferential adjustment assemblies, thus enabling the simulation of different operating conditions with a single nozzle, making it highly practical.

Description

Technical Field

[0001] This utility model relates to an adjustable experimental nozzle, mainly used for flow experiments inside pipes. Background Technology

[0002] During oilfield development, horizontal wells can effectively utilize blocks that are difficult to access with conventional wells, resulting in better initial development outcomes compared to conventional vertical wells. Consequently, the number of horizontal wells is gradually increasing, along with the demand for sand flushing and well workover. However, the floating and migration of sand particles in horizontal sections has always been a challenge and a major obstacle in horizontal well sand flushing operations.

[0003] The best way to study and optimize the parameters of sand flushing in horizontal wells is to simulate the flow process of the working fluid in the well in the laboratory. Therefore, it is necessary to develop an adjustable experimental nozzle. Summary of the Invention

[0004] The technical problem to be solved by this utility model is that in optimizing the sand flushing process of horizontal wells, it is necessary to compare the working effects of different sand flushing tools. Therefore, an adjustable nozzle is needed to simulate the working effects of different sand flushing tools.

[0005] The technical solution of this utility model is as follows:

[0006] An adjustable experimental nozzle includes a pipe section connected to an experimental pipeline at both ends; the pipe section includes an outer pipe and an inner pipe sleeved together; characterized in that a nozzle is provided inside the inner pipe, the front section of the nozzle is fixed by a front positioning device, the rear section of the nozzle is fixed by a rear positioning device, and there is a flexible seal between the nozzle and the rear positioning device; the nozzle moves radially and circumferentially between the front positioning device and the rear positioning device; at the front section of the nozzle, a radial adjustment assembly is provided from the outside of the outer pipe to the inside of the inner pipe; at the rear section of the nozzle, a circumferential adjustment assembly is provided from the outside of the outer pipe to the inside of the inner pipe; both the radial adjustment assembly and the circumferential adjustment assembly are tangent to the nozzle.

[0007] The front positioning device is a universal joint; the rear positioning device is a ring; one end of the universal joint is fixed to the inner tube, and the other end is connected to the nozzle; an elastic structure is fixed to the inner circumference of the ring; the front section of the nozzle is fixed to the inner tube through the universal joint; the rear section of the nozzle extends into the inner circumference of the ring and is connected to the elastic structure; and the nozzle 1 and the ring 13 are flexibly sealed.

[0008] The radial adjustment assembly includes a first outer slider located outside the outer tube, a first telescopic connecting rod located between the outer tube and the inner tube, and a radial adjustment slider located inside the inner tube. One end of the first telescopic connecting rod is connected to the radial adjustment slider, and the other end extends out of the outer tube and is fixed by a first fixing knob. The side of the radial adjustment slider that contacts the nozzle is arc-shaped, and the side that contacts the inner tube is wedge-shaped.

[0009] The circumferential adjustment assembly includes a second outer slider located outside the outer tube, a second telescopic connecting rod located between the outer tube and the inner tube, and a circumferential adjustment slider located inside the inner tube; one end of the second telescopic connecting rod is connected to the circumferential adjustment slider, and the other end extends out of the outer tube and is fixed by a second fixing knob. The circumferential adjustment slider is a wedge-shaped block.

[0010] It also includes a sealing plate, which is located inside the outer tube and tangent to the inner wall of the outer tube; the sealing plate has holes for the nozzle to pass through.

[0011] The sealing plate is provided with a number of holes evenly distributed, and the number of holes is the same as the number of nozzles.

[0012] A flexible material sealing layer is also provided between the nozzle and the sealing plate.

[0013] The upper connector is connected to the experimental pipeline, and the lower connector is connected to the experimental pump pipeline.

[0014] The technical solution of this utility model is as follows:

[0015] This invention can adjust the angle of the nozzle jet by pushing the radial adjustment assembly and the circumferential adjustment assembly, so that the working conditions under different parameters can be simulated with a single nozzle, which is highly practical. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the adjustable experimental nozzle of this utility model.

[0017] Figure 2 This is a schematic diagram of the sealing plate.

[0018] Figure 3 This is a schematic diagram of the radial adjustment slider.

[0019] Figure 4 This is a schematic diagram of the circumferential adjustment slider.

[0020] Figure 5 This is a schematic diagram of the post-positioning structure.

[0021] Reference numerals: 1. Nozzle; 2. Upper connector; 3. Sealing plate; 4. Universal joint; 5. Inner tube; 6. Radial adjusting slider; 7. First telescopic link; 8. First outer slider; 9. First fixing knob; 10. Circumferential adjusting slider; 11. Second outer slider; 12. Second fixing knob; 13. Ring; 14. Lower connector; 15. Outer tube; 16. Second telescopic link; 17. Flexible seal. Detailed Implementation

[0022] Example 1

[0023] An adjustable experimental nozzle includes a pipe section connected to an experimental pipeline at both ends; the pipe section includes an outer pipe 15 and an inner pipe 5 sleeved together; characterized in that a nozzle 1 is provided inside the inner pipe 5, the front section of the nozzle 1 is fixed by a front positioning device, the rear section of the nozzle 1 is fixed by a rear positioning device, and a flexible seal 17 is formed between the nozzle 1 and the rear positioning device; the nozzle 1 moves radially and circumferentially between the front positioning device and the rear positioning device; at the front section of the nozzle 1, a radial adjustment assembly is provided from the outside of the outer pipe 15 to the inside of the inner pipe 5; at the rear section of the nozzle 1, a circumferential adjustment assembly is provided from the outside of the outer pipe 15 to the inside of the inner pipe 5; both the radial adjustment assembly and the circumferential adjustment assembly are tangent to the nozzle 1.

[0024] The specific implementation process of this embodiment is as follows:

[0025] Initially, under the action of the front positioning device and the rear positioning device, the nozzle 1 is parallel to the outer tube 15; the radial adjustment assembly is pushed along the extension direction of the outer tube 15, thereby causing the nozzle 1 to rotate radially within the inner tube 5; the circumferential adjustment assembly is pushed along the extension direction of the outer tube 15, thereby causing the nozzle 1 to rotate tangentially along the circumference within the inner tube 5.

[0026] Example 2

[0027] Based on Example 1, it also includes:

[0028] The front positioning device is a universal joint 4; the rear positioning device is a ring 13; one end of the universal joint 4 is fixed to the inner tube 5, and the other end is connected to the nozzle 1; the inner circumference of the ring 13 is fixed with an elastic structure, the front section of the nozzle 1 is fixed to the inner tube 5 through the universal joint 4, the rear section of the nozzle 1 extends into the inner circumference of the ring 13 and is connected to the elastic structure, and there is a flexible seal 17 between the nozzle 1 and the ring 13.

[0029] Example 3

[0030] Based on Example 2, it also includes:

[0031] The radial adjustment assembly includes a first outer slider 8 located outside the outer tube 15, a first telescopic connecting rod 7 located between the outer tube 15 and the inner tube 5, and a radial adjustment slider 6 located inside the inner tube 5. One end of the first telescopic connecting rod 7 is connected to the radial adjustment slider 6, and the other end extends out of the outer tube 15 and is fixed by a first fixing knob 9. The side of the radial adjustment slider 6 that contacts the nozzle 1 is arc-shaped, and the side that contacts the inner tube 5 is wedge-shaped.

[0032] The circumferential adjustment assembly includes a second outer slider 11 located outside the outer tube 15, a second telescopic connecting rod 16 located between the outer tube 15 and the inner tube 5, and a circumferential adjustment slider 10 located inside the inner tube 5; one end of the second telescopic connecting rod 16 is connected to the circumferential adjustment slider 10, and the other end extends out of the outer tube 15 and is fixed by a second fixing knob 12. The circumferential adjustment slider 10 is a wedge-shaped block.

[0033] Example 4

[0034] Based on embodiment 3, a sealing plate 3 is also included. The sealing plate 3 is located inside the outer tube 15 and is tangent to the inner wall of the outer tube 15. The sealing plate 3 has holes for the nozzle 1 to pass through. The sealing plate 3 has a plurality of holes evenly distributed, and the number of holes is the same as the number of nozzles 1. A flexible material sealing layer is also provided between the nozzle 1 and the sealing plate 3. The upper connector 2 is connected to the experimental pipeline, and the lower connector 14 is connected to the experimental pump pipeline.

[0035] The specific implementation process of this embodiment is as follows:

[0036] Before adjustment, multiple nozzles 1 are evenly distributed inside the sealing plate 3. Under the action of the universal joint 4 and the ring 13, the nozzles 1 are parallel to the outer tube 15. The first outer slider 8 is pushed to move back and forth along the extension direction of the outer tube 15, which drives the radial adjustment slider 6 to move back and forth, thereby causing the nozzles 1 to rotate radially inside the inner tube 5. The second outer slider 11 is pushed to move back and forth along the extension direction of the outer tube 15, which drives the circumferential adjustment slider 10 to move back and forth, thereby causing the nozzles 1 to rotate tangentially around the circumference inside the inner tube 5.

Claims

1. An adjustable experimental nozzle, comprising a pipe section connected to an experimental pipeline at both ends; said pipe section comprising a sleeved outer pipe (15) and an inner pipe (5); characterized in that, The inner tube (5) is provided with a nozzle (1). The front section of the nozzle (1) is fixed by a front positioning device, and the rear section of the nozzle (1) is fixed by a rear positioning device. The nozzle (1) and the rear positioning device are flexibly sealed (17). The nozzle (1) moves radially and circumferentially between the front positioning device and the rear positioning device. At the front section of the nozzle (1), a radial adjustment assembly is provided from the outside of the outer tube (15) to the inside of the inner tube (5). At the rear section of the nozzle (1), a circumferential adjustment assembly is provided from the outside of the outer tube (15) to the inside of the inner tube (5). Both the radial adjustment assembly and the circumferential adjustment assembly are tangent to the nozzle (1).

2. The adjustable experimental nozzle according to claim 1, characterized in that, The front positioning device is a universal joint (4); the rear positioning device is a ring (13); one end of the universal joint (4) is fixed to the inner tube (5), and the other end is connected to the nozzle (1); the inner circumference of the ring (13) is fixed with an elastic structure, the front section of the nozzle (1) is fixed to the inner tube (5) through the universal joint (4), the rear section of the nozzle (1) extends into the inner circumference of the ring (13) and is connected to the elastic structure, and the nozzle (1) and the ring (13) are flexibly sealed (17).

3. The adjustable experimental nozzle according to claim 1, characterized in that, The radial adjustment assembly includes a first outer slider (8) located outside the outer tube (15), a first telescopic connecting rod (7) located between the outer tube (15) and the inner tube (5), and a radial adjustment slider (6) located inside the inner tube (5); one end of the first telescopic connecting rod (7) is connected to the radial adjustment slider (6), and the other end extends out of the outer tube (15) and is fixed by a first fixing knob (9).

4. The adjustable experimental nozzle according to claim 3, characterized in that, The radial adjustment slider (6) is arc-shaped on the side that contacts the nozzle (1) and wedge-shaped on the side that contacts the inner tube (5).

5. The adjustable experimental nozzle according to claim 1, characterized in that, The circumferential adjustment assembly includes a second outer slider (11) located outside the outer tube (15), a second telescopic connecting rod (16) located between the outer tube (15) and the inner tube (5), and a circumferential adjustment slider (10) located inside the inner tube (5); one end of the second telescopic connecting rod (16) is connected to the circumferential adjustment slider (10), and the other end extends out of the outer tube (15) and is fixed by a second fixing knob (12).

6. The adjustable experimental nozzle according to claim 5, characterized in that, The circumferential adjustment slider (10) is a wedge-shaped block.

7. The adjustable experimental nozzle according to claim 1, characterized in that, It also includes a sealing plate (3), which is located inside the outer tube (15) and tangent to the inner wall of the outer tube (15); the sealing plate (3) is provided with a hole through which the spray pipe (1) passes.

8. The adjustable experimental nozzle according to claim 7, characterized in that, The sealing plate (3) is provided with a number of holes evenly distributed, and the number of holes is the same as the number of nozzles (1).

9. The adjustable experimental nozzle according to claim 8, characterized in that, A flexible material sealing layer is also provided between the nozzle (1) and the sealing plate (3).

10. The adjustable experimental nozzle according to claim 1, characterized in that, The upper connector (2) is connected to the experimental pipeline, and the lower connector (14) is connected to the experimental pump pipeline.

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