Online automatic calibration device for multiphase flow meter

Abstract

The utility model discloses a multiphase flowmeter on-line automatic calibration device which comprises a working frame, supporting plates are fixed to the two ends of the bottom of the working frame, an inlet pipe is arranged on the left side of the interior of the working frame, and one end of the inlet pipe extends to the left side of the exterior of the working frame. The other end of the inlet pipe is fixedly connected with the top end in the working frame, the inlet pipe is sleeved with a connector, a left sliding pipe is fixed to the right side end of the inlet pipe, a folding pipe is fixed to the bottom of the left sliding pipe, a connecting box is fixed to the left end of the bottom side of the folding pipe, and the left side of the connecting box is fixedly connected with the inner side of the working frame. A right sliding pipe is arranged on the right side of the left sliding pipe, the right sliding pipe is sleeved with an electric control three-way valve, an outlet pipe is fixed to the right side of the right sliding pipe and extends to the outer right side, calibration is automatically completed through the controller by means of the electric control three-way valve with a return signal, well stopping calibration is not needed, calibration is accurate, and the calibration efficiency is improved. And the automatic calibration flowmeter can be remotely controlled.

Description

Technical Field

[0001] This utility model relates to the field of pipeline flow measurement technology, and in particular to an online automatic calibration device for a multiphase flow meter. Background Technology

[0002] Multiphase flow meters are instruments used to measure fluids containing multiple substances. They can measure and separate the volumetric flow rates of various components in a multiphase fluid. They can be applied in fields such as petroleum, chemical, and environmental protection. Multiphase flow meters can be classified into mechanical, acoustic, and radioactive isotope types.

[0003] In existing technologies, skid-mounted multiphase flow meters for oil fields require calibration for different oil wells or at different times for the same oil well. Manual calibration is not only time-consuming and labor-intensive, but also prone to errors due to improper operation during sampling, which increases calibration error and reduces calibration efficiency. Utility Model Content

[0004] The purpose of this invention is to provide an online automatic calibration device for multiphase flow meters, in order to solve the problems that manual calibration is not only time-consuming and labor-intensive, but also prone to errors due to improper operation during the sampling process, thereby increasing calibration error and reducing calibration efficiency.

[0005] To achieve the above objectives, an online automatic calibration device for a multiphase flow meter is provided, comprising a working frame, with support plates fixed at both ends of the bottom of the working frame, an inlet pipe disposed on the left side inside the working frame, one end of the inlet pipe extending to the left side outside the working frame, the other end of the inlet pipe being fixedly connected to the top of the working frame inside, a connecting gauge sleeved on the outside of the inlet pipe, a left sliding pipe fixed to the right end of the inlet pipe, a folded pipe fixed to the bottom of the left sliding pipe, a connecting box fixed to the left end of the bottom side of the folded pipe, the left side of the connecting box being fixedly connected to the inside of the working frame, a right sliding pipe disposed to the right side of the left sliding pipe, an electrically controlled three-way valve sleeved on the outside of the right sliding pipe, and an outlet pipe fixed to the right side of the right sliding pipe, the outlet pipe extending to the right side outside.

[0006] According to the aforementioned online automatic calibration device for a multiphase flow meter, a first flow meter is fixed to the right side of the bend pipe, a second flow meter is fixed to the left side of the outlet pipe, a flow tube is fixed to the right end of the outlet pipe, and a third flow meter is fixed to the top of the flow tube.

[0007] According to the aforementioned online automatic calibration device for a multiphase flow meter, an inner hollow partition is fixed between the right slide tube and the left slide tube, and the inner hollow partition is circular.

[0008] According to the aforementioned online automatic calibration device for a multiphase flow meter, both the inlet and outlet pipes are fitted with sleeves, and valve bodies are provided on the outside of both sleeves.

[0009] According to the aforementioned online automatic calibration device for a multiphase flow meter, stiffening plates are fixed between the front and rear ends of the working frame, and stiffening ribs are fixed to the top of the two stiffening plates.

[0010] According to the aforementioned online automatic calibration device for a multiphase flow meter, support rods are fixed on both the front and rear sides of the support plates on both sides, and pulleys are rotatably connected to the outside of the multiple support rods.

[0011] According to the aforementioned online automatic calibration device for a multiphase flow meter, the outlet pipe has an inverted conical shape on the outside.

[0012] According to the aforementioned online automatic calibration device for a multiphase flow meter, both the bottom of the inlet pipe and the outlet pipe are fixed with support blocks, and the inner sides of both support blocks are fixedly connected to the outside of the working frame.

[0013] The above scheme has the following advantages: by using an electrically controlled three-way valve with a feedback signal, the calibration is automatically completed through the controller. Not only is it possible to calibrate without stopping the well, but the calibration is also accurate. The flow meter can be remotely controlled for automatic calibration. Furthermore, the design of the first, second, and third flow meters allows for real-time monitoring of flow changes during the production process.

[0014] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0016] Figure 1 This is an overall schematic diagram of an online automatic calibration device for a multiphase flow meter according to the present invention;

[0017] Figure 2 This is a side view of an online automatic calibration device for a multiphase flow meter according to the present invention;

[0018] Figure 3 This is an enlarged schematic diagram of point A of the online automatic calibration device for a multiphase flow meter according to this utility model;

[0019] Figure 4 This is a schematic diagram of the rear side of an online automatic calibration device for a multiphase flow meter according to this utility model.

[0020] Legend:

[0021] 1. Working frame; 2. Support plate; 3. Inlet pipe; 4. Connector; 5. Left slide pipe; 6. Bend pipe; 7. Connecting box; 8. Right slide pipe; 9. Electrically controlled three-way valve; 10. Outlet pipe; 11. First flow meter; 12. Second flow meter; 13. Flow pipe; 14. Third flow meter; 15. Inner cavity partition; 16. Sleeve; 17. Valve body; 18. Rib plate; 19. Rib plate; 20. Support rod; 21. Pulley; 22. Support block. Detailed Implementation

[0022] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0023] Reference Figure 1-4This utility model discloses an online automatic calibration device for a multiphase flow meter, comprising a working frame 1, with support plates 2 fixed at both ends of the bottom of the working frame 1. An inlet pipe 3 is disposed on the left side inside the working frame 1, with one end extending to the left side outside the working frame 1 and the other end fixedly connected to the top inside the working frame 1. A connecting box 4 is sleeved on the outside of the inlet pipe 3. A left sliding pipe 5 is fixed to the right end of the inlet pipe 3, and a folded pipe 6 is fixed to the bottom of the left sliding pipe 5. A connecting box 7 is fixed to the left side of the bottom of the folded pipe 6. The left slide tube 5 is fixedly connected to the inner side of the working frame 1. A right slide tube 8 is provided on the right side of the left slide tube 5. An electrically controlled three-way valve 9 is sleeved on the outside of the right slide tube 8. An outlet pipe 10 is fixed on the right side of the right slide tube 8 and extends to the outside right side. In the prior art, skid-mounted oil-water-gas multiphase flow meters used in oil fields require calibration for different oil wells or different time periods of the same oil well. If manual calibration is used, it is not only time-consuming and labor-intensive, but also prone to errors due to non-standard operation during sampling, thereby increasing the calibration error and reducing the efficiency. To address the issue of low calibration efficiency, the valve body 17 on the inlet pipe 3 can be opened to allow fluid to flow in. The fluid then passes through the connector 4 and flows into the inside of the left slide pipe 5. Part of the fluid then enters the inside of the bend pipe 6, connecting to the first flow meter 11 via the connector box 7 for flow measurement. The fluid then flows into the inside of the right slide pipe 8 and the outlet pipe 10, where the flow is measured again by the second flow meter 12 on the outside of the outlet pipe 10. Finally, the fluid flows into the inside of the flow pipe 13, where the flow is measured by the third flow meter 14 at the top of the flow pipe 13. By combining the measurements from the first, second, and third flow meters 11 and 14, the final flow value can be determined and compared with the flow value under standard conditions to determine the error of the flow meter to be calibrated. This method is suitable for calibrating flow meters within a small range. Furthermore, by using an electrically controlled three-way valve 9 with a feedback signal, the calibration is automatically completed via a controller. This eliminates the need for well shutdown during calibration, ensures accurate calibration, and allows for remote control of the automatic calibration of the flow meter.

[0024] A first flow meter 11 is fixed on the right side of the folded pipe 6, a second flow meter 12 is fixed on the left side of the outlet pipe 10, and a flow tube 13 is fixed at the right end of the outlet pipe 10. A third flow meter 14 is fixed at the top of the flow tube 13, which enables real-time monitoring of flow changes during the production process, thereby helping engineers adjust production parameters.

[0025] An inner hollow partition 15 is fixed between the right slide tube 8 and the left slide tube 5. The inner hollow partition 15 is circular to facilitate a tight fit between the left slide tube 5 and the right slide tube 8, which facilitates fluid inflow. Both the inlet pipe 3 and the outlet pipe 10 are fitted with sleeves 16. Both sides of the sleeves 16 are equipped with valve bodies 17 to facilitate the control of fluid flow. The working frame 1 is fixed between the front and rear ends. The top of the two ribs 18 is fixed with rib plates 19 to maintain the stability of the device.

[0026] Both sides of the support plate 2 are fixed with support rods 20. Multiple support rods 20 are rotatably connected to pulleys 21 on the outside, which facilitates the movement of the whole device. The outside of the outlet pipe 10 is inverted cone shape to improve the efficiency of fluid outflow. Both the bottom of the inlet pipe 3 and the outlet pipe 10 are fixed with support blocks 22. The inner side of the two support blocks 22 is fixedly connected to the outside of the working frame 1, which facilitates the overall stability of the inlet pipe 3 and the outlet pipe 10.

[0027] Working principle: First, the device is moved to the designated position using pulley 21. Then, valve 17 on inlet pipe 3 is opened to allow fluid to flow in. The fluid then flows through connector 4 into the inside of left slide pipe 5. Part of the fluid then enters the inside of bend pipe 6 and connects to the first flow meter 11 via connector 7 for flow measurement. The fluid then flows into the inside of right slide pipe 8 and outlet pipe 10, where the flow is measured again by the second flow meter 12 on the outside of outlet pipe 10. Finally, the fluid flows into the inside of flow pipe 13, where the flow is measured by the third flow meter 14 at the top of flow pipe 13. By combining the values ​​of the first flow meter 11, second flow meter 12, and third flow meter 14, the final flow value is determined and compared with the flow value under standard conditions to determine the error of the flow meter to be calibrated. This method is suitable for calibrating flow meters within a small range. Furthermore, the calibration is automatically completed using an electrically controlled three-way valve 9 with a feedback signal, eliminating the need for well shutdown for calibration. The calibration is accurate and can be remotely controlled for automatic calibration of the flow meter.

[0028] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. An online automatic calibration device for a multiphase flow meter, comprising: The working frame (1) is characterized in that support plates (2) are fixed at both ends of the bottom of the working frame (1), an inlet pipe (3) is provided on the left side inside the working frame (1), one end of the inlet pipe (3) extends to the left side outside the working frame (1), the other end of the inlet pipe (3) is fixedly connected to the top inside the working frame (1), a connecting tube (4) is sleeved on the outside of the inlet pipe (3), a left sliding tube (5) is fixed on the right side of the inlet pipe (3), a folded tube (6) is fixed at the bottom of the left sliding tube (5), a connecting box (7) is fixed on the left side of the bottom of the folded tube (6), the left side of the connecting box (7) is fixedly connected to the inside of the working frame (1), a right sliding tube (8) is provided on the right side of the left sliding tube (5), an electrically controlled three-way valve (9) is sleeved on the outside of the right sliding tube (8), an outlet pipe (10) is fixed on the right side of the right sliding tube (8), and the outlet pipe (10) extends to the right side outside.

2. The online automatic calibration device for a multiphase flow meter according to claim 1, characterized in that, A first flow meter (11) is fixed on the right side of the folded tube (6), a second flow meter (12) is fixed on the left side of the outlet tube (10), and a flow tube (13) is fixed at the right end of the outlet tube (10), and a third flow meter (14) is fixed at the top of the flow tube (13).

3. The online automatic calibration device for a multiphase flow meter according to claim 1, characterized in that, An inner hollow partition (15) is fixed between the right sliding tube (8) and the left sliding tube (5), and the inner hollow partition (15) is circular.

4. The online automatic calibration device for a multiphase flow meter according to claim 1, characterized in that, Both the inlet pipe (3) and the outlet pipe (10) are fitted with sleeves (16), and valve bodies (17) are provided on the outside of the sleeves (16) on both sides.

5. The online automatic calibration device for a multiphase flow meter according to claim 1, characterized in that, The working frame (1) is fixed with stiffening plates (18) at both the front and rear ends, and stiffening plates (19) are fixed at the top of the two stiffening plates (18).

6. The online automatic calibration device for a multiphase flow meter according to claim 1, characterized in that, Both sides of the support plate (2) are fixed with support rods (20) on the front and back sides, and pulleys (21) are rotatably connected to the outside of the multiple support rods (20).

7. The online automatic calibration device for a multiphase flow meter according to claim 1, characterized in that, The outside of the outlet pipe (10) is inverted cone shape.

8. The online automatic calibration device for a multiphase flow meter according to claim 1, characterized in that, Both the inlet pipe (3) and the outlet pipe (10) are fixed with support blocks (22) at their bottoms, and the inner sides of both support blocks (22) are fixedly connected to the outside of the working frame (1).

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