High-precision damping type multi-channel metering pry for offshore platform

Abstract

The application relates to the technical field of metering pry damping technology, in particular to a high-precision damping multi-channel metering pry for a marine platform, which is provided with a composite damping design, a marine current force active offsetting and mechanical buffering double-protection system are constructed, the pry frame can be flexibly displaced along the universal groove under the impact of the marine current, cooperates with the hydraulic cylinder and the spring assembly in the rotating shell, the marine current thrust trigger threshold can be accurately adjusted, when the marine current pressure exceeds the preset value, the communication air bag collects the marine current force through the positioning pipe and pushes the communication block to slide, drives the pry frame to generate reverse displacement, actively offsets the marine current vibration energy, guarantees the accuracy of oil and gas production statistics, adjusts the hydraulic bag contraction threshold as required, realizes accurate pressure control under different working conditions, and through the rotation cooperation of the first stop ring and the second stop ring, vibration noise generated by fluid impact is reduced, and the service life of the sensor cable and the pipeline interface is prolonged.

Description

Technical Field

[0001] This application relates to the field of metering skid vibration reduction technology, and in particular to a high-precision vibration-reducing multi-channel metering skid for offshore platforms. Background Technology

[0002] The metering skid on an offshore platform is a key piece of equipment integrated into the platform, primarily used for the precise metering and processing of fluid media such as crude oil, natural gas, and seawater. Its core function is to monitor fluid parameters such as flow rate, density, and composition in real time using built-in high-precision flow meters (such as turbine flow meters and Coriolis flow meters) and pressure / temperature sensors. This provides data support for oil and gas resource production statistics, trade transactions, and production process control. The equipment typically integrates multi-channel metering modules, valve groups, control systems, and vibration damping structures into a steel skid, enabling simultaneous processing of multiple fluid media (such as the three-phase flow of oil, gas, and water separated during crude oil extraction).

[0003] In actual use, existing metering skids can cause multiple functional and safety issues due to vibration factors in the marine environment. First, the platform is affected by waves, sea winds and equipment operation, and continuous vibration will be directly transmitted to the metering equipment. For example, the turbine of the turbine flow meter will become eccentric due to vibration, resulting in deviation in speed measurement. The vibration tube amplitude of the Coriolis flow meter will be disordered, causing the flow calculation error to rise sharply from the standard ±0.5% to more than ±2%, which seriously affects the accuracy of oil and gas production statistics and trade transactions.

[0004] Secondly, without vibration damping measures, the rigid connection between pipelines and equipment will suffer fatigue damage due to vibration. For example, frequent shaking of flanges at pipeline interfaces may lead to seal failure and media leakage, posing a safety hazard in flammable and explosive marine environments. Sensor cables are prone to breakage due to long-term vibration and friction, causing metering signal interruption or data drift. In addition, if the skid frame is not optimized for vibration resistance, it may resonate with environmental vibrations, amplifying the amplitude and exacerbating the wear of internal components. To address these issues, we propose a high-precision vibration-damping multi-channel metering skid for offshore platforms. Utility Model Content

[0005] To address the problems mentioned in the background section, this application provides a high-precision vibration-damping multi-channel metering skid for offshore platforms.

[0006] This application provides a high-precision vibration-damping multi-channel metering skid for an offshore platform, which adopts the following technical solution: it includes a working platform, a skid frame is fixedly installed on the top of the working platform, and a metering device is installed inside the skid frame, the metering device including a detection pipe;

[0007] The top of the work platform is fixedly connected to a protective frame. There are four protective frames arranged symmetrically in pairs. The bottom of the protective frame is connected to a protective tube. The inside of the protective tube is rotatably connected to a positioning tube. The outside of the protective tube is fixedly connected to a leak-proof ring. The inside of the protective frame is rotatably connected to a rotating shell. The inside of the rotating shell is slidably connected to a connecting block. The inside of the connecting block is rotatably connected to a drive rod. The top of the drive rod is fixedly connected to the bottom of the pry bar.

[0008] A buffer tube is fixedly connected inside the detection pipe, and a first retaining ring is fixedly connected inside the buffer tube. A second retaining ring is rotatably connected to the top of the first retaining ring.

[0009] Optionally, the bottom of the pry bar is fixedly connected to four sliding plates, all four sliding plates are slidably connected to the top of adjacent protective frames, the top of the protective frame is provided with several universal grooves, the several universal grooves are arranged in a circle, and universal balls are rotatably connected inside the several universal grooves, and the four sliding plates are slidably connected to the top of adjacent universal balls.

[0010] Optionally, the top of the protective frame is provided with a rotating groove, the rotating shell is rotatably connected inside the rotating groove, the top of the rotating shell is provided with a sliding groove, the top of the sliding groove is fixedly connected with a connecting shell, the output end of the connecting shell is connected to a connecting airbag, one end of the connecting airbag is fixedly connected with a connecting plate, one side of the connecting plate abuts against one side of the connecting block, the connecting block is slidably connected inside the sliding groove, the top of the connecting shell is provided with a stabilizing groove, and the driving rod is slidably connected to the top of the stabilizing groove.

[0011] Optionally, a hydraulic cylinder is fixedly installed on the inner wall of the rotating shell, and a spring is fixedly connected to the output end of the hydraulic cylinder. One end of the spring is fixedly connected to one side of the connecting block.

[0012] Optionally, the top of the positioning tube is connected to the bottom of the communicating shell, the input end of the positioning tube is connected to a wide tube, and a directional wing is fixedly connected to one side of the positioning tube.

[0013] Optionally, the detection pipe is internally fixedly connected to an installation ring, the bottom of the installation ring is fixedly connected to a hydraulic bladder, the top of the installation ring is fixedly connected to a hydraulic rod, the hydraulic rod is connected to the hydraulic bladder, the top of the hydraulic rod is fixedly connected to a helical rack, and the top of the second retaining ring is provided with ring teeth, the helical rack meshing with the ring teeth.

[0014] Optionally, a first connecting plate is fixedly connected to the top of the hydraulic rod, and a tension spring is fixedly connected to the bottom of the first connecting plate. The bottom of the tension spring is fixedly connected to the top of the mounting ring.

[0015] Optionally, a second connecting plate is fixedly connected to the top of the hydraulic rod, a vacuum rod is fixedly connected to the top of the mounting ring, the top of the vacuum rod is fixedly connected to the bottom of the second connecting plate, a vacuum tube is connected to one side of the vacuum rod, the vacuum tube extends to the outside of the detection pipe, and a vacuum pump is fixedly installed at one end of the vacuum tube.

[0016] In summary, this application includes the following beneficial technical effects:

[0017] 1. This utility model constructs a dual protection system of active counteracting of ocean current force and mechanical buffering through a composite vibration reduction design. A universal ball sliding mechanism is set between the protective frame on the top of the working platform and the skid, allowing the skid to move flexibly along the universal groove under the impact of ocean current. In conjunction with the hydraulic cylinder and spring assembly in the rotating shell, the trigger threshold of ocean current thrust can be precisely adjusted. When the ocean current pressure exceeds the preset value, the connecting airbag collects the ocean current force through the positioning tube and pushes the connecting block to slide, driving the drive rod to make the skid move in the opposite direction, actively counteracting the vibration energy of the ocean current. At the same time, this design transforms traditional passive vibration reduction into active force balance, fundamentally avoiding problems such as eccentricity of metering elements and amplitude disorder caused by vibration, and ensuring the accuracy of oil and gas production statistics.

[0018] 2. This utility model forms an adaptive pressure regulation closed loop through a hydraulic bladder-rack linkage mechanism inside the detection pipeline. When the fluid pressure fluctuates, the hydraulic bladder is compressed, driving the hydraulic rod to extend and retract. Through the meshing of the rack and ring teeth, the second retaining ring rotates, adjusting the flow cross-sectional area in real time to stabilize the flow velocity. With the reset action of the tension spring, the retaining ring position can be quickly restored when the pressure drops sharply. At the same time, the negative pressure control system composed of the vacuum rod and vacuum pump can adjust the hydraulic bladder contraction threshold as needed to achieve precise pressure control under different working conditions. Furthermore, the rotational cooperation between the first and second retaining rings reduces the vibration noise generated by fluid impact and extends the service life of the sensor cable and pipeline interface. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of an embodiment of this application;

[0020] Figure 2 yes Figure 1 A magnified structural diagram of part A;

[0021] Figure 3 This is a three-dimensional structural diagram of the omnidirectional ball part in the embodiments of this application;

[0022] Figure 4 This is a three-dimensional structural diagram of the connected shell portion in an embodiment of this application;

[0023] Figure 5 This is a three-dimensional structural diagram of the detection pipe in an embodiment of this application;

[0024] Figure 6 This is a three-dimensional structural diagram of the hydraulic rod portion in an embodiment of this application.

[0025] Reference numerals: 1. Working platform; 2. Skid; 3. Measuring equipment; 4. Testing pipe; 5. Sliding plate; 6. Protective frame; 7. Protective pipe; 8. Positioning pipe; 9. Wide pipe; 10. Directional wing; 11. Leak-proof ring; 12. Rotating groove; 13. Rotating shell; 14. Sliding groove; 15. Connecting shell; 16. Connecting airbag; 17. Connecting plate; 18. Connecting block; 19. Drive rod; 20. Stabilizing groove; 21. Spring; 22. Hydraulic cylinder; 23. Universal groove; 24. Universal ball; 25. Buffer pipe; 26. Mounting ring; 27. Hydraulic bladder; 28. First retaining ring; 29. ​​Second retaining ring; 30. Hydraulic rod; 31. Helical rack; 32. Ring tooth; 33. First connecting plate; 34. Tension spring; 35. Vacuum rod; 36. Second connecting plate; 37. Vacuum tube; 38. Vacuum pump. Detailed Implementation

[0026] The following is in conjunction with the appendix Figures 1-6 This application will be described in further detail.

[0027] This application discloses a high-precision vibration-damping multi-channel metering skid for offshore platforms. For example... Figure 1 As shown, it includes a work platform 1, a pry bar 2 is fixedly installed on the top of the work platform 1, a metering device 3 is installed inside the pry bar 2, and the metering device 3 includes a detection pipe 4.

[0028] Please see Figure 4 and Figure 5 A buffer tube 25 is fixedly connected inside the detection pipe 4. A first retaining ring 28 is fixedly connected inside the buffer tube 25. A second retaining ring 29 is rotatably connected to the top of the first retaining ring 28. The rotation of the second retaining ring 29 in conjunction with the first retaining ring 28 can reduce the flow rate in the detection pipe 4, thereby reducing the pressure inside the detection pipe 4. An installation ring 26 is fixedly connected inside the detection pipe 4. A hydraulic bladder 27 is fixedly connected to the bottom of the installation ring 26. A hydraulic rod 30 is fixedly connected to the top of the installation ring 26. The hydraulic rod 30 is connected to the hydraulic bladder 27. A helical rack 31 is fixedly connected to the top of the hydraulic rod 30. A ring tooth 32 is opened on the top of the second retaining ring 29. The helical rack 31 meshes with the ring tooth 32. The movement of the helical rack 31 is controlled by the pressure inside the detection pipe 4, thereby driving the second retaining ring 29.

[0029] The top of the hydraulic rod 30 is fixedly connected to a first connecting plate 33, and the bottom of the first connecting plate 33 is fixedly connected to a tension spring 34. The bottom of the tension spring 34 is fixedly connected to the top of the mounting ring 26. When the pressure inside the detection pipe 4 decreases, the tension spring 34 drives the second retaining ring 29 to return to its original position, thereby controlling the pressure inside the detection pipe 4.

[0030] A second connecting plate 36 is fixedly connected to the top of the hydraulic rod 30, and a vacuum rod 35 is fixedly connected to the top of the mounting ring 26. The top of the vacuum rod 35 is fixedly connected to the bottom of the second connecting plate 36. A vacuum tube 37 is connected to one side of the vacuum rod 35. The vacuum tube 37 extends to the outside of the detection pipe 4. A vacuum pump 38 is fixedly installed at one end of the vacuum tube 37. The pressure of the detection pipe 4 is indirectly controlled by controlling the contraction pressure of the hydraulic bladder 27 through the vacuum rod 35, so as to stabilize it.

[0031] Please see Figure 2 and Figure 3 The top of the working platform 1 is fixedly connected to a protective frame 6. There are four protective frames 6 arranged symmetrically in pairs. The bottom of the protective frame 6 is connected to a protective pipe 7. The inside of the protective pipe 7 is rotatably connected to a positioning pipe 8. The input end of the positioning pipe 8 is connected to a wide pipe 9. A directional wing 10 is fixedly connected to one side of the positioning pipe 8. The wide pipe 9 is aligned with the direction of the ocean current through the directional wing 10, so that the ocean current force can be collected and used.

[0032] The protective tube 7 is externally fixedly connected with a leak-proof ring 11, which improves the service life of the protective tube 7 and the positioning tube 8. The protective frame 6 is internally rotatably connected with a rotating shell 13. The rotating shell 13 is internally slidably connected with a connecting block 18. The connecting block 18 is internally rotatably connected with a drive rod 19. The top of the drive rod 19 is fixedly connected to the bottom of the pry bar 2. The movement of the drive rod 19 indirectly drives the movement of the pry bar 2. The four drive rods 19 can position the pry bar 2.

[0033] Please see Figure 3 The bottom of the pry bar 2 is fixedly connected to four sliding plates 5. The four sliding plates 5 are all slidably connected to the top of the adjacent protective frame 6. The top of the protective frame 6 is provided with several universal grooves 23. The universal grooves 23 are arranged in a circle. The interior of each universal groove 23 is rotatably connected to a universal ball 24. The four sliding plates 5 are all slidably connected to the top of the adjacent universal ball 24. The universal grooves 23, universal balls 24 and sliding plates 5 improve the smoothness of the movement of the pry bar 2.

[0034] Please see Figure 3 and Figure 4The top of the protective frame 6 is provided with a rotating groove 12, and the rotating shell 13 is rotatably connected to the inside of the rotating groove 12. The top of the rotating shell 13 is provided with a sliding groove 14, and the top of the sliding groove 14 is fixedly connected with a connecting shell 15. The output end of the connecting shell 15 is connected to a connecting airbag 16, and one end of the connecting airbag 16 is fixedly connected with a connecting plate 17. One side of the connecting plate 17 abuts against one side of the connecting block 18. The connecting block 18 is slidably connected inside the sliding groove 14. The top of the connecting shell 15 is provided with a stabilizing groove 20, and the drive rod 19 is slidably connected to the top of the stabilizing groove 20. The top of the positioning tube 8 is connected to the bottom of the connecting shell 15. The connecting airbag 16 is extended by the ocean current and indirectly drives the skid 2 to move.

[0035] Please see Figure 3 A hydraulic cylinder 22 is fixedly installed on the inner wall of the rotating shell 13. A spring 21 is fixedly connected to the output end of the hydraulic cylinder 22. One end of the spring 21 is fixedly connected to one side of the connecting block 18. The hydraulic cylinder 22 and the spring 21 can control the pressure under which the connecting airbag 16 extends, and indirectly control the movement of the skid 2 when the ocean current reaches the adjustment force, so as to effectively reduce vibration.

[0036] The implementation principle of a high-precision vibration-damping multi-channel metering skid for an offshore platform according to an embodiment of this application is as follows: When the metering device 3 is detecting, the ocean current flows from the bottom of the working platform 1 and controls the movement of the directional wing 10. The movement of the directional wing 10 causes the positioning tube 8 to rotate inside the protective tube 7. The rotation of the protective tube 7 causes the connecting shell 15 to rotate. The rotation of the connecting shell 15 causes the rotating shell 13 to rotate. The rotation of the rotating shell 13 causes the connecting block 18 to rotate outside the drive rod 19, so that the pushing direction of the connecting airbag 16 is opposite to the flow method of the ocean current.

[0037] At the same time, the directional wing 10 moves to align the input of the wide tube 9 with the ocean current. At this time, the thrust of the ocean current enters the interior of the connecting shell 15 through the positioning tube 8. The pressure inside the connecting shell 15 increases and pushes the connecting airbag 16 to extend. The extension of the connecting airbag 16 drives the connecting plate 17 to move. The movement of the connecting plate 17 drives the connecting block 18 to slide inside the sliding groove 14. The sliding of the connecting block 18 drives the drive rod 19 to move, which indirectly drives the skid 2 to move, thereby preventing the skid 2 from being pushed by the ocean current, avoiding the skid 2 from shaking, and improving the detection accuracy of the metering device 3.

[0038] When it is necessary to determine the thrust of the ocean current driving the skid 2 to trigger the movement of the skid 2, the hydraulic cylinder 22 is activated and the spring 21 is compressed, so that the thrust of the ocean current driving the skid 2 can be adjusted to avoid unnecessary shaking of the skid 2 due to the ocean current.

[0039] When the pressure inside the detection pipe 4 fluctuates due to the ocean current, the pressure change causes the hydraulic bladder 27 to contract. The contraction of the hydraulic bladder 27 causes the hydraulic rod 30 connected to it to extend and retract. The extension of the hydraulic rod 30 causes the second connecting plate 36 to move. The movement of the second connecting plate 36 causes the second retaining ring 29 to rotate, thereby adjusting the flow rate inside the detection pipe 4 and indirectly adjusting the pressure inside the detection pipe 4, thus ensuring the detection accuracy of the detection pipe 4. When the pressure inside the detection pipe 4 decreases, the tension spring 34 retracts, causing the helical rack 31 to return to its original position.

[0040] When it is necessary to trigger and adjust the pressure holding device inside the detection pipeline 4, the vacuum pump 38 is started to change the vacuum pressure inside the vacuum rod 35, thereby adjusting the contraction pressure of the hydraulic bladder 27.

[0041] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A high-precision vibration-damping multi-channel metering skid for an offshore platform, comprising a working platform (1), characterized in that: A pry bar (2) is fixedly installed on the top of the work platform (1), and a metering device (3) is installed inside the pry bar (2). The metering device (3) includes a detection pipe (4). The top of the work platform (1) is fixedly connected to a protective frame (6). There are four protective frames (6) arranged symmetrically in pairs. The bottom of the protective frame (6) is connected to a protective pipe (7). The inside of the protective pipe (7) is rotatably connected to a positioning pipe (8). The outside of the protective pipe (7) is fixedly connected to a leak-proof ring (11). The inside of the protective frame (6) is rotatably connected to a rotating shell (13). The inside of the rotating shell (13) is slidably connected to a connecting block (18). The inside of the connecting block (18) is rotatably connected to a drive rod (19). The top of the drive rod (19) is fixedly connected to the bottom of the pry bar (2). The detection pipe (4) is fixedly connected to a buffer pipe (25), and the buffer pipe (25) is fixedly connected to a first retaining ring (28). The top of the first retaining ring (28) is rotatably connected to a second retaining ring (29).

2. The high-precision vibration-damping multi-channel metering skid for offshore platforms according to claim 1, characterized in that: The bottom of the pry bar (2) is fixedly connected to four sliding plates (5), and the four sliding plates (5) are all slidably connected to the top of the adjacent protective frame (6). The top of the protective frame (6) is provided with several universal grooves (23), which are arranged in a circle. The interior of each of the several universal grooves (23) is rotatably connected to a universal ball (24), and the four sliding plates (5) are all slidably connected to the top of the adjacent universal ball (24).

3. The high-precision vibration-damping multi-channel metering skid for offshore platforms according to claim 1, characterized in that: The top of the protective frame (6) is provided with a rotating groove (12), the rotating shell (13) is rotatably connected to the inside of the rotating groove (12), the top of the rotating shell (13) is provided with a sliding groove (14), the top of the sliding groove (14) is fixedly connected with a connecting shell (15), the output end of the connecting shell (15) is connected to a connecting airbag (16), one end of the connecting airbag (16) is fixedly connected with a connecting plate (17), one side of the connecting plate (17) abuts against one side of the connecting block (18), the connecting block (18) is slidably connected inside the sliding groove (14), the top of the connecting shell (15) is provided with a stabilizing groove (20), and the driving rod (19) is slidably connected to the top of the stabilizing groove (20).

4. The high-precision vibration-damping multi-channel metering skid for offshore platforms according to claim 3, characterized in that: A hydraulic cylinder (22) is fixedly installed on the inner wall of the rotating shell (13). A spring (21) is fixedly connected to the output end of the hydraulic cylinder (22). One end of the spring (21) is fixedly connected to one side of the connecting block (18).

5. The high-precision vibration-damping multi-channel metering skid for offshore platforms according to claim 4, characterized in that: The top of the positioning tube (8) is connected to the bottom of the connecting shell (15), the input end of the positioning tube (8) is connected to a wide tube (9), and a directional wing (10) is fixedly connected to one side of the positioning tube (8).

6. The high-precision vibration-damping multi-channel metering skid for offshore platforms according to claim 1, characterized in that: An installation ring (26) is fixedly connected inside the detection pipe (4). A hydraulic bladder (27) is fixedly connected to the bottom of the installation ring (26). A hydraulic rod (30) is fixedly connected to the top of the installation ring (26). The hydraulic rod (30) is connected to the hydraulic bladder (27). A helical rack (31) is fixedly connected to the top of the hydraulic rod (30). A ring tooth (32) is opened on the top of the second retaining ring (29). The helical rack (31) meshes with the ring tooth (32).

7. A high-precision vibration-damping multi-channel metering skid for offshore platforms according to claim 6, characterized in that: The top of the hydraulic rod (30) is fixedly connected to a first connecting plate (33), and the bottom of the first connecting plate (33) is fixedly connected to a tension spring (34). The bottom of the tension spring (34) is fixedly connected to the top of the mounting ring (26).

8. The high-precision vibration-damping multi-channel metering skid for offshore platforms according to claim 7, characterized in that: The top of the hydraulic rod (30) is fixedly connected to a second connecting plate (36), the top of the mounting ring (26) is fixedly connected to a vacuum rod (35), the top of the vacuum rod (35) is fixedly connected to the bottom of the second connecting plate (36), a vacuum tube (37) is connected to one side of the vacuum rod (35), the vacuum tube (37) extends to the outside of the detection pipe (4), and a vacuum pump (38) is fixedly installed at one end of the vacuum tube (37).

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