A multiphase flow meter for crude oil single well

Abstract

This invention discloses a multiphase flow meter for a single crude oil well, relating to the field of flow meter technology. It includes a flow pipe with connecting pipes at both ends; an analytical detector is installed on the outside of the flow pipe, and a pulse unit and an ultrasonic detector are installed inside the analytical detector; a rotating shaft is rotatably installed inside the flow pipe, with a turbine slidingly fitted on the shaft; a drive mechanism is installed at both ends of the shaft to drive the pipe and control the turbine's movement; scraping mechanisms are installed at both ends of the turbine; a fixing mechanism is installed inside the turbine; a fixing hole is opened on the rotating shaft, and the fixing mechanism cooperates with the fixing hole to fix the turbine; this invention can remove internally accumulated particulate matter during crude oil flow detection, eliminating the need for manual maintenance.

Description

Technical Field

[0001] This invention relates to the field of flow meter technology, and in particular to a multiphase flow meter for a single crude oil well. Background Technology

[0002] Crude oil flow meters are mainly used to monitor and measure the flow rate of crude oil in pipelines or storage tanks, and are commonly used in industries such as oil production, oil transportation, and oil-gas separation. Due to the high viscosity and complex composition of crude oil, selecting a suitable flow meter is crucial for accurate measurement. Currently, there are various types of flow meters, including turbine flow meters and ultrasonic flow meters. During use, regular internal maintenance is required, as large particles in the crude oil can cause inaccurate flow detection. However, existing flow meters have limited functionality and do not offer effective maintenance solutions. Therefore, this invention proposes a flow meter that can remove internally accumulated particulate matter during crude oil flow measurement, eliminating the need for manual maintenance. Summary of the Invention

[0003] To address the aforementioned technical problems, this invention can remove internally accumulated particulate matter during crude oil flow detection, eliminating the need for manual maintenance.

[0004] The present invention is used as follows: a multiphase flow meter for crude oil single well includes a flow pipe with pipes connected to both ends; an analytical detector is provided on the outside of the flow pipe, and a pulse unit and an ultrasonic detector are provided inside the analytical detector; a rotating shaft is rotatably provided inside the flow pipe, and a turbine is slidably fitted on the rotating shaft; a drive mechanism is provided at both ends of the rotating shaft to drive the pipe and control the movement of the turbine; a scraping mechanism is provided at both ends of the turbine; a fixing mechanism is provided inside the turbine; a fixing hole is provided on the rotating shaft, and the fixing mechanism cooperates with the fixing hole to fix the turbine.

[0005] Furthermore, the analytical detector is equipped with an instrument for displaying medium flow information. When the turbine rotates, the turbine blades pass through the pulse unit to generate a pulse signal, which in turn outputs feedback of the turbine's rotational speed, i.e., detects and analyzes the medium flow information. The ultrasonic detector is used to emit ultrasonic signals to detect the medium flow information.

[0006] Furthermore, a support is provided inside the flow tube, and a rotating shaft is rotatably mounted on the support; a drive mechanism is mounted on the support.

[0007] Furthermore, the push drive mechanism includes a mounting cylinder mounted on a bracket, a push cylinder inside the mounting cylinder, and a push ring on the telescopic rod of the push cylinder; in the two push drive mechanisms, one of the mounting cylinders is equipped with a drive motor, an electromagnetic clamp is mounted on the output shaft of the drive motor, and an electromagnetic clamp is mounted on the electromagnetic clamp to drive the rotating shaft.

[0008] Furthermore, a drive shaft is provided at the end of the rotating shaft. The drive shaft is located inside the electromagnetic clamp, and the electromagnetic clamp holds and fixes the drive shaft to drive the rotating shaft.

[0009] Furthermore, the fixing mechanism includes a control ring rotatably installed inside the turbine, a push rod on the control ring, a telescopic contact plate telescopically installed inside the turbine, a fixed shaft on the telescopic contact plate, a spring connecting the telescopic contact plate and the turbine interior, and the push rod contacting the telescopic contact plate. The push rod pushes the telescopic contact plate to move, and the fixed shaft engages with a fixed hole to achieve fixing.

[0010] Furthermore, the fixing mechanism also includes a magnetic suction part disposed on the control ring, and two magnetic suction control parts are disposed inside the turbine for magnetically controlling the magnetic suction part to control the rotation stroke of the control ring.

[0011] Furthermore, the scraping mechanism includes electromagnetic push rings disposed at both ends inside the turbine, and an electromagnetic push rod disposed inside the turbine. The electromagnetic push rod is used to control the movement of the electromagnetic push rings. A pushing part is disposed on the electromagnetic push rings. A telescopic support rod is telescopically disposed on the turbine. A scraping part is disposed at the end of the telescopic support rod facing the wall of the flow pipe. A spring is connected between the end of the telescopic support rod facing the turbine and the turbine. A contact part is disposed on the telescopic support rod. The contact part contacts the pushing part, and the pushing part pushes the contact part and the telescopic support rod to move.

[0012] The beneficial effects of this invention compared with the prior art are: (1) During operation, the medium flow rate can be detected simultaneously by the pulse section and the ultrasonic detector. For the pulse section, when the medium drives the turbine to rotate, the turbine blades pass through the pulse section to generate a pulse signal, and then output feedback of the turbine speed, that is, to detect and analyze the medium flow rate information; at the same time, the ultrasonic detector is used to emit ultrasonic signals to detect the medium flow rate information, and realize synchronous detection; (2) The push ring pushes the turbine; further, the electromagnetic push rod controls the electromagnetic push ring to move, the push section pushes the contact section, that is, the telescopic support rod moves in and out, and the scraping section can contact the inner wall of the flow pipe, which can scrape off the attached particulate matter. The accumulation of large particulate matter has an impact on the medium flow rate. Through the scraping operation, the impact caused by the accumulation can be eliminated; (3) During scraping, the turbine is pushed to move on the rotating shaft, that is, in the flow detection area in the flow pipe, the mobile scraping is performed. During scraping, the flow rate is detected by the ultrasonic detector, that is, the change in flow rate before and after scraping is detected. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0014] Figure 2 This is a schematic diagram of the flow tube structure of the present invention.

[0015] Figure 3 This is a schematic diagram of the internal structure of the flow tube of the present invention.

[0016] Figure 4 This is a schematic diagram of the shaft mounting structure of the present invention.

[0017] Figure 5 This is a schematic diagram of a partial structure of the rotating shaft of the present invention.

[0018] Figure 6 This is a schematic diagram of the turbine structure of the present invention.

[0019] Figure 7 This is a cross-sectional view of the turbine in the present invention.

[0020] Figure 8 This is a schematic diagram of the scraping mechanism of the present invention.

[0021] Figure 9 For the present invention Figure 8 A schematic diagram of the structure at the A mark in the middle.

[0022] Figure 10 This is a schematic diagram of the fixing mechanism of the present invention.

[0023] Reference numerals: 1-Pipe; 2-Flow tube; 3-Analytical detector; 4-Instrument; 5-Pulse section; 6-Ultrasonic detector; 7-Bracket; 8-Mounting cylinder; 9-Rotating shaft; 901-Fixing hole; 10-Turbine; 11-Push cylinder; 12-Push ring; 13-Drive shaft; 14-Drive motor; 15-Electromagnetic clamp; 16-Telescopic support rod; 17-Scraping section; 18-Electromagnetic push ring; 19-Electromagnetic push rod; 20-Push section; 21-Contact section; 22-Spring 1; 23-Control ring; 24-Magnetic attraction section; 25-Magnetic attraction control section; 26-Push rod; 27-Telescopic contact plate; 28-Fixing shaft; 29-Spring 2. Detailed Implementation

[0024] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0025] Example: Figures 1 to 10As shown, a multiphase flow meter for a single crude oil well includes a flow pipe 2, with pipes 1 connected to both ends of the flow pipe 2; an analysis detector 3 is installed on the outside of the flow pipe 2, and a pulse unit 5 and an ultrasonic detector 6 are installed inside the analysis detector 3; a rotating shaft 9 is rotatably installed inside the flow pipe 2, and a turbine 10 is slidably fitted on the rotating shaft 9; a drive mechanism is installed at both ends of the rotating shaft 9 to drive the pipe and control the movement of the turbine 10; a scraping mechanism is installed at both ends of the turbine 10, and a fixing mechanism is installed inside the turbine 10; a fixing hole 901 is opened on the rotating shaft 9, and the fixing mechanism cooperates with the fixing hole 901 to fix the turbine 10.

[0026] The analyzer 3 is equipped with an instrument 4 for displaying medium flow information. When the turbine 10 rotates, the blades of the turbine 10 pass through the pulse unit 5 to generate a pulse signal, which in turn outputs feedback of the rotational speed of the turbine 10, that is, to detect and analyze the medium flow information. The ultrasonic detector 6 is used to emit ultrasonic signals to detect the medium flow information.

[0027] A support 7 is provided inside the flow tube 2, and a rotating shaft 9 is rotatably mounted on the support 7. A push drive mechanism is mounted on the support 7. The push drive mechanism includes a mounting cylinder 8 set on the support 7, a push cylinder 11 is provided inside the mounting cylinder 8, and a push ring 12 is provided on the telescopic rod of the push cylinder 11. In the two push drive mechanisms, a drive motor 14 is provided on one of the mounting cylinders 8, an electromagnetic clamp 15 is provided on the output shaft of the drive motor 14, and an electromagnetic clamp plate is provided on the electromagnetic clamp 15 to drive the rotating shaft 9. A drive shaft 13 is provided at the end of the rotating shaft 9. The drive shaft 13 is located inside the electromagnetic clamp 15, and the electromagnetic clamp plate clamps and fixes the drive shaft 13 to drive the rotating shaft 9.

[0028] The fixing mechanism includes a control ring 23 rotatably mounted inside the turbine 10, a push rod 26 on the control ring 23, a telescopic contact plate 27 telescopically mounted inside the turbine 10, a fixed shaft 28 on the telescopic contact plate 27, a spring 29 connecting the telescopic contact plate 27 and the inside of the turbine 10, and the push rod 26 contacts the telescopic contact plate 27. The push rod 26 pushes the telescopic contact plate 27 to move, and the fixed shaft 28 cooperates with the fixed hole 901 to achieve fixing. The fixing mechanism also includes a magnetic suction part 24 on the control ring 23, and two magnetic suction control parts 25 are provided inside the turbine 10 for magnetically controlling the magnetic suction part 24 to control the rotation stroke of the control ring 23.

[0029] The scraping mechanism includes electromagnetic push rings 18 disposed at both ends inside the turbine 10, and an electromagnetic push rod 19 disposed inside the turbine 10. The electromagnetic push rod 19 is used to control the movement of the electromagnetic push rings 18. A push part 20 is disposed on the electromagnetic push rings 18. A telescopic support rod 16 is telescopically disposed on the turbine 10. A scraping part 17 is disposed at one end of the telescopic support rod 16 facing the wall of the flow pipe 2. A spring 22 is connected between the end of the telescopic support rod 16 facing the turbine 10 and the turbine 10. A contact part 21 is disposed on the telescopic support rod 16. The contact part 21 contacts the push part 20. The push part 20 pushes the contact part 21 and the telescopic support rod 16 to move.

[0030] Operating principle: During operation, the medium flow rate can be simultaneously detected by the pulse unit 5 and the ultrasonic detector 6. For the pulse unit 5, when the medium drives the turbine 10 to rotate, the blades of the turbine 10 pass through the pulse unit 5 to generate a pulse signal, and then output feedback of the rotational speed of the turbine 10, that is, to detect and analyze the medium flow rate information; at the same time, the ultrasonic detector 6 is used to emit ultrasonic signals to detect the medium flow rate information.

[0031] Subsequent periodic maintenance of the flow pipe 2 is performed to ensure accurate flow detection. Specifically, the magnetic suction control unit 25 magnetically controls the magnetic suction unit 24. Even when the control ring 23 rotates, the push rod 26 releases the push on the telescopic contact plate 27. The telescopic contact plate 27 moves under the elastic force of the spring 29, that is, the fixed shaft 28 disengages from the fixed hole 901, allowing the turbine 10 to move on the rotating shaft 9. That is, the push cylinder 11 controls the movement of the push ring 12, and the push ring 12 pushes the turbine 10. Furthermore, the electromagnetic push rod 19 controls the movement of the electromagnetic push ring 18, and the push unit 20 pushes the contact unit 21, that is, the telescopic support rod 16 moves telescopically. The scraping part 17 can contact the inner wall of the flow pipe 2 to scrape off the attached particulate matter and remove large particulate matter. Accumulation affects the flow rate of the medium. The effect caused by accumulation can be eliminated by scraping. Specifically, during scraping, the turbine 10 is moved on the rotating shaft 9, that is, in the flow detection area in the flow pipe 2, the scraping is performed by moving. During scraping, the flow rate is detected by the ultrasonic detector 6, that is, the change in flow rate before and after scraping is detected. Further, the drive shaft 13 is clamped and fixed by the electromagnetic clamp plate on the electromagnetic clamp 15. The drive motor 14 works to drive the rotating shaft 9 to rotate, thereby enabling the turbine 10 to rotate actively to realize the scraping operation. After the operation is completed, the turbine 10 is placed in the detection position. By controlling the extension and retraction of the fixed shaft 28, the fixed shaft 28 is engaged with the fixed hole 901 to realize fixation, so that the detection operation can continue.

Claims

1. A single-well multiphase flow meter for crude oil, comprising a flow pipe (2), with pipes (1) connected to both ends of the flow pipe (2); an analysis detector (3) is disposed on the outside of the flow pipe (2), and a pulse unit (5) and an ultrasonic detector (6) are disposed inside the analysis detector (3); characterized in that: The flow tube (2) is equipped with a rotating shaft (9) inside, and a turbine (10) is slidably fitted on the rotating shaft (9). A push drive mechanism is provided at both ends of the rotating shaft (9) to push the tube to control the movement of the turbine (10). A scraping mechanism is provided at both ends of the turbine (10), and a fixing mechanism is provided inside the turbine (10). A fixing hole (901) is provided on the rotating shaft (9). The fixing mechanism cooperates with the fixing hole (901) to fix the turbine (10). The fixing mechanism includes a control ring (23) rotatably installed inside the turbine (10), a push rod (26) is provided on the control ring (23), a telescopic contact plate (27) is telescopically provided inside the turbine (10), a fixed shaft (28) is provided on the telescopic contact plate (27), a spring (29) is connected between the telescopic contact plate (27) and the inside of the turbine (10), and the push rod (26) contacts the telescopic contact plate (27). The push rod (26) pushes the telescopic contact plate (27) to move, and the fixed shaft (28) cooperates with the fixed hole (901) to achieve fixing. The fixing mechanism also includes a magnetic suction part (24) provided on the control ring (23), and two magnetic suction control parts (25) are provided inside the turbine (10) for magnetic suction control of the magnetic suction part (24) to control the rotation stroke of the control ring (23); The scraping mechanism includes electromagnetic push rings (18) at both ends inside the turbine (10), and electromagnetic push rods (19) are provided inside the turbine (10). The electromagnetic push rods (19) are used to control the movement of the electromagnetic push rings (18). A push part (20) is provided on the electromagnetic push rings (18). A telescopic support rod (16) is telescopically provided on the turbine (10). A scraping part (17) is provided at one end of the telescopic support rod (16) facing the wall of the flow pipe (2). A spring (22) is connected between the end of the telescopic support rod (16) facing the turbine (10) and the turbine (10). A contact part (21) is provided on the telescopic support rod (16). The contact part (21) contacts the push part (20). The push part (20) pushes the contact part (21) and the telescopic support rod (16) to move.

2. The crude oil single-well multiphase flow meter according to claim 1, characterized in that: The analytical detector (3) is equipped with an instrument (4) for displaying medium flow information. When the turbine (10) rotates, the blades of the turbine (10) pass through the pulse unit (5) to generate a pulse signal, and then output feedback of the rotation speed of the turbine (10), that is, to detect and analyze the medium flow information. The ultrasonic detector (6) is used to emit ultrasonic signals to detect the medium flow information.

3. The crude oil single-well multiphase flow meter according to claim 1, characterized in that: The flow tube (2) is equipped with a bracket (7), and the rotating shaft (9) is rotatably mounted on the bracket (7); the drive mechanism is mounted on the bracket (7).

4. The crude oil single-well multiphase flow meter according to claim 3, characterized in that: The push drive mechanism includes an installation cylinder (8) set on the bracket (7), a push cylinder (11) is set inside the installation cylinder (8), and a push ring (12) is set on the telescopic rod of the push cylinder (11); in the two push drive mechanisms, a drive motor (14) is set on one of the installation cylinders (8), an electromagnetic clamp (15) is set on the output shaft of the drive motor (14), and an electromagnetic clamp plate is set on the electromagnetic clamp (15) to drive the rotating shaft (9).

5. A multiphase flow meter for a single crude oil well according to claim 4, characterized in that: The end of the rotating shaft (9) is provided with a drive shaft (13), which is located inside the electromagnetic clamp (15). The electromagnetic clamp holds and fixes the drive shaft (13) to drive the rotating shaft (9).

Images