A device and method for detecting the tightness of a subsea pipeline clamp

Abstract

The application discloses a sealing detection device and method for a submarine pipeline clamp, and relates to the technical field of submarine pipelines.The device comprises a base, a linear driving mechanism, a sliding block, an electronic cabin, a detection mechanism, two pressure sensing mechanisms and two fixed supports.In use, the base is installed on the mounting rack of the submarine pipeline clamp;the inner cover plate, the outer cover plate and the two side plates form a rectangular structure with an open lower end to form a measurement area;the ultrasonic generator is turned on, and the time interval data obtained by the ultrasonic generator is observed;the flow of the measurement area is calculated according to the data on the PC, and it is determined whether the measurement area leaks;after a period of measurement, the linear driving mechanism drives the sliding block to move to the other fixed support, and then the sealing of multiple sections of the submarine pipeline clamp is sequentially detected.The device and method can quickly and conveniently detect the sealing condition of the submarine pipeline clamp after the submarine pipeline clamp is laid, and lay a good foundation for the subsequent work.

Description

Technical Field

[0001] This invention relates to the field of subsea pipeline technology, and in particular to a device and method for testing the sealing performance of subsea pipeline clamps. Background Technology

[0002] With the nationwide construction of subsea pipelines, monitoring and repair work on these pipelines is constantly underway. This has led to the development of various devices specifically designed for subsea pipelines. Subsea pipeline clamps are one such device developed for this purpose, used for subsea pipeline inspection and repair. After deployment, the area around the subsea pipeline can be sealed. Subsequently, in conjunction with tools such as water pumps, the internal components of the clamps can be dewatered, enabling the completion of some difficult underwater operations. Before the pumps begin pumping, it is often necessary to verify the sealing of the subsea pipeline clamps. Sealing of subsea pipeline clamps is typically achieved using safety rubber strips. Traditionally, sealing tests often required repeated pumping tests, which is crucial for equipment safety and for achieving quick and effective underwater sealing checks. However, currently, there is no specific device or method for testing the sealing of subsea pipeline clamps. Summary of the Invention

[0003] To address the above technical problems, this invention provides a sealing detection device and method for submarine pipeline clamps, which can quickly and conveniently detect the sealing status of submarine pipeline clamps after deployment, laying a good foundation for subsequent work.

[0004] To achieve the above objectives, the present invention provides the following solution:

[0005] This invention provides a sealing performance testing device for a subsea pipeline clamp, comprising a base, a linear drive mechanism, a slider, an electronic compartment, a testing mechanism, two pressure sensing mechanisms, and two fixed supports. The two fixed supports are respectively disposed at the left and right ends of the upper part of the base, and the slider is disposed between the two fixed supports. The linear drive mechanism drives the slider to reciprocate along the length direction of the base. The two pressure sensing mechanisms are respectively disposed on the left and right sides of the slider. The testing mechanism includes an inner cover plate, an outer cover plate, a first rotary drive mechanism, two second rotary drive mechanisms, two side plates, and multiple ultrasonic generators. The inner cover plate is disposed on the slider. On the front side, the first rotary drive mechanism is located at the top of the front side of the slider. The first rotary drive mechanism is used to drive the outer cover plate to rotate. Two second rotary drive mechanisms are respectively located on the left and right sides of the slider. Each second rotary drive mechanism is used to drive one of the side plates to rotate. The inner cover plate, the outer cover plate, and the two side plates can form a rectangular structure with an open bottom. The inner side of the inner cover plate, the outer cover plate, and the side plates are all provided with ultrasonic generators. The ultrasonic generators, the pressure sensing mechanism, the linear drive mechanism, the first rotary drive mechanism, and the second rotary drive mechanism are all connected to the electronic compartment.

[0006] Preferably, the linear drive mechanism includes a lead screw motor, a lead screw, a lead screw nut, and two fixed rods. The two ends of the lead screw are rotatably mounted on the two fixed supports, and one end of the lead screw passes through one of the fixed supports and is connected to the power output shaft of the lead screw motor. The lead screw motor is connected to the electronic compartment. The lead screw nut is mounted on the lead screw. The slider is fixedly sleeved on the outside of the lead screw nut. The two fixed rods are respectively arranged on both sides of the lead screw, and the two ends of each fixed rod are fixed to the two fixed supports. The slider is slidably sleeved on the fixed rod.

[0007] Preferably, the linear drive mechanism further includes a motor support, and the lead screw motor is fixed on the motor support.

[0008] Preferably, the pressure sensing mechanism includes a mounting base, a rubber strip, and multiple pressure sensors. The mounting base is disposed on one side of the slider, and an arc-shaped groove is provided on the side of the mounting base away from the slider. A strip-shaped groove is provided in the middle of the arc-shaped groove. Multiple pressure sensors are sequentially disposed in the strip-shaped groove. The rubber strip is fixed in the arc-shaped groove, and the pressure sensors are connected to the electronic compartment.

[0009] Preferably, a horizontal support base is provided at the top of the front side of the slider. The first rotary drive mechanism includes a first motor, a first support, a first rotating rod, a first rotating sleeve, and two first support sleeves. The two first support sleeves are respectively fixed to the left and right ends of the upper part of the horizontal support base. The two ends of the first rotating rod are respectively rotatably installed in the two first support sleeves. One end of the first rotating rod passes through one of the first support sleeves and is connected to the power output shaft of the first motor. The first motor is connected to the electronic compartment. The first rotating sleeve is fixedly sleeved on the middle part of the first rotating rod. The front end of the first rotating sleeve is fixedly connected to one end of the outer cover plate.

[0010] Preferably, the first rotary drive mechanism further includes a first support, which is fixed to one side of the upper part of the horizontal support, and the first motor is fixed to the first support.

[0011] Preferably, the outer cover plate includes a first cover plate, a second cover plate, and a positioning hinge. One end of the first cover plate is fixedly connected to the front end of the first rotating sleeve, and the other end of the first cover plate is connected to the second cover plate through the positioning hinge.

[0012] Preferably, the second rotary drive mechanism includes a second motor, a second support, a second rotating rod, a second rotating sleeve, and a second supporting sleeve. The second supporting sleeve is fixed to the upper part of one side of the slider. The upper part of the second rotating rod is rotatably installed in the second supporting sleeve. The top end of the second rotating rod is connected to the power output shaft of the second motor. The second motor is connected to the electronic compartment. The second rotating sleeve is fixedly sleeved on the lower part of the second rotating rod. The front end of the second rotating sleeve is fixedly connected to one end of the side plate.

[0013] Preferably, the second rotary drive mechanism further includes a second support, which is fixed to the top of one side of the slider, and the second motor is fixed to the second support.

[0014] This invention also provides a method for sealing performance testing based on a sealing performance testing device for subsea pipeline clamps, comprising the following steps:

[0015] Step 1: Install the base onto the mounting platform of the subsea pipeline clamp, and move it to the designated underwater depth with the subsea pipeline clamp;

[0016] Step 2: Control the linear drive mechanism to move the slider to one side of the fixed support. At this time, the reading of the pressure sensing mechanism on the slider near the fixed support on the other side is 0.

[0017] Step 3: Control the first rotary drive mechanism and the second rotary drive mechanism to drive the outer cover plate and the side plate to rotate, so that the inner cover plate, the outer cover plate and the two side plates form a rectangular structure with an open lower end, forming a measurement area;

[0018] Step 4: Control the ultrasonic generator to turn on, observe the time interval data transmitted by the ultrasonic generator, calculate the flow rate of the measurement area on the PC based on the data, and determine whether there is a leak in the measurement area based on the flow rate of the measurement area.

[0019] Step 5: After measuring for a period of time, control the linear drive mechanism to move the slider to the fixed support on the other side, and at the same time observe the reading of the pressure sensing mechanism on the slider near the fixed support on the other side.

[0020] Step six, and repeat steps four to five until the reading of the pressure sensing mechanism on the fixed support near the other side of the slider is not 0.

[0021] The present invention achieves the following technical effects compared to the prior art:

[0022] The present invention relates to a sealing performance testing device and method for subsea pipeline clamps, comprising a base, a linear drive mechanism, a slider, an electronic compartment, a testing mechanism, two pressure sensing mechanisms, and two fixed supports. The linear drive mechanism drives the slider to reciprocate along the length of the base, and the two pressure sensing mechanisms are respectively located on the left and right sides of the slider. In use, the base is installed on the mounting platform of the subsea pipeline clamp and moves with the clamp to a specified underwater depth. The first and second rotary drive mechanisms are controlled to rotate the outer cover plate and side plates, so that the inner cover plate, outer cover plate, and two side plates form a rectangular structure with an open lower end, forming a measurement area. An ultrasonic generator is activated, and the time interval data transmitted by the ultrasonic generator is observed. The flow rate in the measurement area is calculated on a PC based on the data, and the presence of leakage in the measurement area is determined based on the flow rate. After a period of measurement, the linear drive mechanism is controlled to move the slider to the fixed support on the other side, thereby sequentially performing sealing performance testing on multiple sections of the subsea pipeline clamp. This device and method can quickly and conveniently detect the sealing condition of the subsea pipeline clamp after its deployment, laying a good foundation for subsequent work. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 A schematic diagram of the sealing performance testing device for submarine pipeline clamps provided by the present invention;

[0025] Figure 2 A first three-dimensional structural diagram of the detection mechanism in the sealing detection device for submarine pipeline clamps provided by the present invention;

[0026] Figure 3 This is a second three-dimensional structural diagram of the detection mechanism in the sealing detection device for submarine pipeline clamps provided by the present invention;

[0027] Figure 4 A schematic diagram of the pressure sensing mechanism in the sealing detection device for the submarine pipeline clamp provided by the present invention;

[0028] Figure 5 A schematic diagram of the installation of the pressure sensor in the sealing detection device for the subsea pipeline clamp provided by the present invention;

[0029] Figure 6 A schematic diagram of the structure of the sealing detection device for the submarine pipeline clamp provided by the present invention when forming the measurement area;

[0030] Figure 7 This is a schematic diagram showing the installation of the sealing performance testing device for the submarine pipeline clamp provided by the present invention.

[0031] Explanation of reference numerals in the attached drawings: 100. Sealing test device for subsea pipeline clamps; 1. Base; 2. Fixed support; 3. Motor support; 4. Screw motor; 5. Screw; 6. Fixed rod; 7. Slider; 8. Electronic compartment; 9. Mounting seat; 91. Arc groove; 92. Strip groove; 10. Pressure sensor; 11. Rubber strip; 12. Watertight connector; 13. Inner cover plate; 14. Outer cover plate; 141. First cover plate; 142. Second cover plate; 1 43. Positioning hinge; 15. Side plate; 16. Ultrasonic generator; 17. Horizontal support base; 18. First support; 19. First motor; 20. First rotating rod; 21. First rotating sleeve; 22. First support sleeve; 23. Second support base; 24. Second motor; 25. Second rotating rod; 26. Second rotating sleeve; 27. Second support sleeve; 200. Submarine pipeline; 300. Submarine pipeline clamp; 400. Mounting platform. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] The purpose of this invention is to provide a sealing test device and method for submarine pipeline clamps, which can quickly and conveniently test the sealing status of submarine pipeline clamps after deployment, laying a good foundation for subsequent work.

[0034] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0035] like Figures 1-7 As shown, this embodiment provides a sealing performance testing device 100 for a subsea pipeline clamp, including a base 1, a linear drive mechanism, a slider 7, an electronic compartment 8, a testing mechanism, two pressure sensing mechanisms, and two fixed supports 2. The base 1 is used to install on the mounting frame 400 of the subsea pipeline clamp 300. The two fixed supports 2 are respectively located at the left and right ends of the upper part of the base 1. The slider 7 is located between the two fixed supports 2. The linear drive mechanism is used to drive the slider 7 to reciprocate along the length direction of the base 1. The two pressure sensing mechanisms are respectively located on the left and right sides of the slider 7. The testing mechanism includes an inner cover plate 13, an outer cover plate 14, a first rotary drive mechanism, two second rotary drive mechanisms, two side plates 15, and multiple ultrasonic generators 16. The inner cover plate 13 is located on the front side of the slider 7 and is vertically arranged. The first rotary drive mechanism is located on the top of the front side of the slider 7. The first rotary drive mechanism is used to drive the outer cover plate 14 to rotate. In this embodiment, the outer cover plate 14 can form an L-shaped structure. Two second rotary drive mechanisms are respectively set on the left and right sides of the slider 7. Each second rotary drive mechanism is used to drive a side plate 15 to rotate. The inner cover plate 13, the outer cover plate 14 and the two side plates 15 can form a rectangular structure with an open lower end. The open lower end is used to align with the detection point of the submarine pipeline clamp 300. The linear drive mechanism drives the slider 7 and the detection mechanism to move along the length direction of the base 1, thereby sequentially detecting multiple detection points of the submarine pipeline clamp 300. The inner sides of the inner cover plate 13, the outer cover plate 14 and the side plates 15 are all provided with ultrasonic generators 16. The ultrasonic generators 16, the pressure sensing mechanism, the linear drive mechanism, the first rotary drive mechanism and the second rotary drive mechanism are all connected to the electronic compartment 8. The electronic compartment 8 is used to connect to the PC.

[0036] During operation, the time interval data transmitted by the ultrasonic generator 16 is observed, and the flow rate of the measurement area is calculated on the PC based on the data. In this embodiment, the ultrasonic generators 16 are installed at a certain interval and in a certain number on the inner cover plate 13, outer cover plate 14 and side plate 15, that is, the ultrasonic generators 16 are installed in an array, thereby improving the accuracy of flow measurement.

[0037] The linear drive mechanism includes a lead screw motor 4, a lead screw 5, a lead screw nut, and two fixed rods 6. Both ends of the lead screw 5 are rotatably mounted on two fixed supports 2, and one end of the lead screw 5 passes through one of the fixed supports 2 and is connected to the power output shaft of the lead screw motor 4. Specifically, the lead screw 5 is rotatably mounted in the fixed support 2 via bearings, and one end of the lead screw 5 is connected to the power output shaft of the lead screw motor 4 via a coupling. The lead screw motor 4 is connected to the electronic compartment 8 and is used to mount on the mounting frame 400 of the subsea pipeline clamp 300. The lead screw nut is mounted on the lead screw 5, and the slider 7 is fixedly sleeved on the outside of the lead screw nut. The two fixed rods 6 are respectively located on both sides of the lead screw 5, and both ends of each fixed rod 6 are fixed to the two fixed supports 2. The slider 7 is slidably sleeved on the fixed rod 6. During operation, the lead screw motor 4 is activated by the electronic compartment 8, and the lead screw 5 drives the lead screw nut, the slider 7, and the detection mechanism on the slider 7 to move along the length of the base 1.

[0038] The linear drive mechanism also includes a motor support 3, on which a lead screw motor 4 is fixed. The motor support 3 is used to mount the subsea pipeline clamp 300 onto the mounting frame 400. It should be noted that the motor support 3 and the base 1 can also be configured as an integrated structure.

[0039] like Figure 4 and Figure 5 As shown, the pressure sensing mechanism includes a mounting base 9, a rubber strip 11, and multiple pressure sensors 10. The mounting base 9 is located on one side of the slider 7. An arc-shaped groove 91 is provided on the side of the mounting base 9 away from the slider 7. A strip-shaped groove 92 is provided in the middle of the arc-shaped groove 91. In this embodiment, both the arc-shaped groove 91 and the strip-shaped groove 92 are arranged in the horizontal direction. Multiple pressure sensors 10 are sequentially arranged in the strip-shaped groove 92. The rubber strip 11 is fixed in the arc-shaped groove 91. In this embodiment, the rubber strip 11 is glued to the arc-shaped groove 91, and one side of the rubber strip 11 is provided with an arc-shaped protrusion that matches the structure of the arc-shaped groove 91. The pressure sensors 10 are connected to the electronic compartment 8.

[0040] After installation, the rubber strip 11 can touch but not squeeze the pressure sensor 10 in the initial state. When the rubber strip 11 is squeezed by the fixed support 2, it squeezes the pressure sensor 10, causing the pressure sensor 10 reading to no longer be 0. At this point, it can be determined that the slider 7 has moved to the fixed support 2. In this embodiment, the pressure sensors 10 are arranged on the mounting base 9 at certain intervals, that is, the pressure sensors 10 are installed in an array, thereby improving the accuracy of determining that the slider 7 has reached the fixed support 2.

[0041] like Figure 2As shown, a horizontal support base 17 is provided on the top of the front side of the slider 7. The first rotary drive mechanism includes a first motor 19, a first support 18, a first rotating rod 20, a first rotating sleeve 21, and two first support sleeves 22. The two first support sleeves 22 are respectively fixed to the left and right ends of the upper part of the horizontal support base 17. The two ends of the first rotating rod 20 are respectively rotatably installed in the two first support sleeves 22. One end of the first rotating rod 20 passes through a first support sleeve 22 and is connected to the power output shaft of the first motor 19. The first motor 19 is fixed on the horizontal support base 17. In this embodiment, one end of the first rotating rod 20 is connected to the power output shaft of the first motor 19 through a coupling. The first motor 19 is connected to the electronic compartment 8. The first rotating sleeve 21 is fixedly sleeved in the middle of the first rotating rod 20. The front end of the first rotating sleeve 21 is fixedly connected to one end of the outer cover plate 14, so that when the first rotating rod 20 rotates, it can drive the first rotating sleeve 21 and the outer cover plate 14 to rotate.

[0042] The first rotary drive mechanism also includes a first support 18, which is fixed to one side of the upper part of the horizontal support 17, and a first motor 19 is fixed to the first support 18.

[0043] The outer cover plate 14 includes a first cover plate 141, a second cover plate 142, and a positioning hinge 143. One end of the first cover plate 141 is fixedly connected to the front end of the first rotating sleeve 21, and the other end of the first cover plate 141 is connected to the second cover plate 142 through the positioning hinge 143. By setting the positioning hinge 143, the second cover plate 142 and the first cover plate 141 can be adjusted to any angle.

[0044] like Figure 3 As shown, the second rotary drive mechanism includes a second motor 24, a second support 23, a second rotating rod 25, a second rotating sleeve 26, and a second support sleeve 27. The second support sleeve 27 is fixed to the upper part of one side of the slider 7. The upper part of the second rotating rod 25 is rotatably installed in the second support sleeve 27. The top end of the second rotating rod 25 is connected to the power output shaft of the second motor 24. The second motor 24 is fixed on the slider 7. In this embodiment, the top end of the second rotating rod 25 is connected to the power output shaft of the second motor 24 through a coupling. The second motor 24 is connected to the electronic compartment 8. The second rotating sleeve 26 is fixedly sleeved on the lower part of the second rotating rod 25. The front end of the second rotating sleeve 26 is fixedly connected to one end of the side plate 15, so that when the second rotating rod 25 rotates, it can drive the second rotating sleeve 26 and the side plate 15 to rotate.

[0045] The second rotary drive mechanism also includes a second support 23, which is fixed to the top of one side of the slider 7, and the second motor 24 is fixed to the second support 23.

[0046] Specifically, the electronic compartment 8 is located on the upper part of the slider 7. In this embodiment, the electronic compartment 8 includes a microcontroller. The ultrasonic generator 16 is equipped with a data transmission line and is connected to the microcontroller of the electronic compartment 8 via a cable. The pressure sensor 10 is also equipped with a data transmission line and is connected to the microcontroller of the electronic compartment 8 via a cable. This embodiment also includes a battery compartment, which is located on the upper part of the slider 7 and connected to a PC. The lead screw motor 4, the first motor 19, and the second motor 24 are all equipped with power interfaces and speed controllers. The power interfaces and speed controllers are respectively connected to the microcontroller of the battery compartment and the electronic compartment 8 via cables. In this embodiment, the electronic compartment 8 can control the lead screw motor 4, the first motor 19, the second motor 24, and the ultrasonic generator 16, and can acquire data returned by the pressure sensor 10 and the ultrasonic generator 16.

[0047] In this specific embodiment, watertight connectors 12 are provided on the lead screw motor 4, the first motor 19, the second motor 24, the electronics compartment 8, and the battery compartment. The function of the watertight connectors 12 is to make the cable and the equipment with the watertight connectors 12 more securely connected and prevent seawater from entering at the connection point; the watertight connectors 12 are provided with a threaded wire and a sealing ring at the rear, and are tightened onto the equipment through the threaded hole of the equipment.

[0048] This embodiment also provides a sealing test method based on a sealing test device 100 for submarine pipeline clamps, comprising the following steps:

[0049] Step 1: Rotate the second cover plate 142 so that it is perpendicular to the first cover plate 141, so that the outer cover plate 14 forms an L-shaped structure. Install the base 1 and the motor support 3 on the mounting frame 400 of the subsea pipeline clamp 300, and move them to the designated underwater depth with the subsea pipeline clamp 300. After reaching the designated depth, the outer cover plate 14 and the side plate 15 are in an immovable state and no measurement area is formed, and the ultrasonic generator 16 is in the off state.

[0050] Step 2: After the subsea pipeline clamp 300 clamps the subsea pipeline 200, the battery compartment is powered on and the electronic compartment 8 starts working. The linear drive mechanism is controlled to move the slider 7 to the fixed support 2 on one side. At this time, the reading of the pressure sensing mechanism on the slider 7 near the fixed support 2 on the other side is 0. Specifically, the electronic compartment 8 controls the lead screw motor 4 to work, so that the slider 7 and the detection mechanism move to the fixed support 2 on the right side. At this time, the reading of the pressure sensing mechanism on the right side of the slider 7 is not 0, indicating that the slider 7 has moved to the fixed support 2 on the right side, and the reading of the pressure sensing mechanism on the left side of the slider 7 is 0.

[0051] Step 3, as follows Figure 6As shown, the first and second rotary drive mechanisms are controlled to rotate the outer cover plate 14 and the side plate 15, so that the inner cover plate 13, the outer cover plate 14 and the two side plates 15 form a rectangular structure with an open lower end, forming a measurement area. Specifically, the electronic compartment 8 controls the first motor 19 and the second motor 24 to rotate the outer cover plate 14 and the side plate 15 respectively, so that the first cover plate 141 is set horizontally and the second cover plate 142 is set vertically, and the two side plates 15 are perpendicular to the inner cover plate 13 respectively. At this time, the inner cover plate 13, the outer cover plate 14 and the two side plates 15 form a rectangular structure with an open lower end.

[0052] Step 4: Turn on the ultrasonic generator 16. The ultrasonic generator 16 sends and receives ultrasonic waves. Observe the time interval data transmitted by the ultrasonic generator 16. Calculate the flow rate of the measurement area on the PC based on the data. Determine whether there is a leak in the measurement area based on the flow rate of the measurement area.

[0053] Step 5: After measuring for a period of time, control the linear drive mechanism to move the slider 7 to the fixed support 2 on the other side, and at the same time observe the reading of the pressure sensing mechanism on the slider 7 near the fixed support 2 on the other side; specifically, control the lead screw motor 4 to work through the electronic cabin 8, drive the lead screw 5 to rotate, so that the slider 7 moves a distance to the fixed support 2 on the other side, and then detect the coverage area of ​​the detection mechanism.

[0054] Step Six: Repeat Steps Four and Five until the reading of the pressure sensing mechanism on the slider 7 near the fixed support 2 on the other side is not zero, that is, until the reading of the pressure sensing mechanism on the left side of the slider 7 is not zero, indicating that the slider 7 has moved to the fixed support 2 on the left. Specifically, since the rubber strip 11 will be compressed and deformed after the slider 7 collides with the fixed support 2, the pressure sensor 10 will have a large value change due to the pressure of the rubber strip 11. When this change occurs, it means that the slider 7 has reached the fixed support 2 on the other side. At this time, the lead screw motor 4 is turned off, thus completing the sealing test based on the subsea pipeline clamp 300.

[0055] This specification uses specific examples to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. Furthermore, those skilled in the art will recognize that, based on the ideas of the present invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A sealing performance testing device for a subsea pipeline clamp, characterized in that, The utility model provides a kind of ultrasonic testing device, including base, linear drive mechanism, slider, electronic cabin, detection mechanism, two pressure sensing mechanisms and two fixed supports, two described fixed supports are respectively arranged in the left and right ends of the upper portion of the base, the slider is arranged between two described fixed supports, the linear drive mechanism is used to drive the slider reciprocating along the length direction of the base, two pressure sensing mechanisms are respectively arranged in the left and right sides of the slider;The detection mechanism includes inner cover plate, outer cover plate, first rotary drive mechanism, two second rotary drive mechanisms, two side plates and multiple ultrasonic generators, the inner cover plate is arranged in the front side of the slider, the first rotary drive mechanism is arranged in the top of the front side of the slider, the first rotary drive mechanism is used to drive the outer cover plate to rotate, two second rotary drive mechanisms are respectively arranged in the left and right sides of the slider, each second rotary drive mechanism is used to drive one side plate to rotate, the inner cover plate, the outer cover plate and two side plates can surround the rectangle structure with open lower end, the inner side of the inner cover plate, the outer cover plate and the side plate is provided with the ultrasonic generator, the ultrasonic generator, the pressure sensing mechanism, the linear drive mechanism, the first rotary drive mechanism and the second rotary drive mechanism are connected with the electronic cabin;The top of the front side of the slider is provided with horizontal support base, the first rotary drive mechanism includes first motor, first support, first rotary rod, first rotary sleeve and two first support sleeve, two first support sleeve are respectively fixed in the left and right ends of the upper portion of the horizontal support base, the two ends of the first rotary rod are respectively rotatably installed in two first support sleeve, one end of the first rotary rod passes through one first support sleeve and is connected with the power output shaft of the first motor, the first motor is connected with the electronic cabin, the first rotary sleeve is fixedly sleeved on the middle part of the first rotary rod, and the front end of the first rotary sleeve is fixedly connected with one end of the outer cover plate;The outer cover plate includes first cover plate, second cover plate and positioning hinge, one end of the first cover plate is fixedly connected with the front end of the first rotary sleeve, and the other end of the first cover plate is connected with the second cover plate through the positioning hinge.

2. The apparatus of claim 1, wherein, The linear drive mechanism includes lead screw motor, lead screw, lead screw nut and two fixed rods, the two ends of the lead screw are rotatably installed on two fixed supports respectively, and one end of the lead screw passes through one fixed support and is connected with the power output shaft of the lead screw motor, the lead screw motor is connected with the electronic cabin, the lead screw nut is installed on the lead screw, the slider is fixedly sleeved outside the lead screw nut, two fixed rods are respectively arranged on the two sides of the lead screw, and the two ends of each fixed rod are respectively fixed on two fixed supports, and the slider is slidably sleeved on the fixed rod.

3. The seal integrity detection apparatus of a subsea pipeline clamp of claim 2, wherein, The linear drive mechanism further includes motor support, and the lead screw motor is fixed on the motor support.

4. The apparatus of claim 1, wherein, The pressure sensing mechanism comprises a mounting seat, a rubber strip and a plurality of pressure sensors, the mounting seat is arranged on one side of the slider, an arc-shaped groove is arranged on the side of the mounting seat away from the slider, a strip-shaped groove is arranged in the middle of the arc-shaped groove, a plurality of pressure sensors are arranged in the strip-shaped groove in sequence, the rubber strip is fixed in the arc-shaped groove, and the pressure sensors are connected with the electronic cabin.

5. The apparatus of claim 1, wherein, The first rotary drive mechanism further comprises a first support fixed to one side of the upper part of the horizontal support seat, and the first motor is fixed to the first support.

6. The apparatus of claim 1, wherein, The second rotary drive mechanism comprises a second motor, a second support, a second rotary rod, a second rotary sleeve and a second support sleeve, the second support sleeve is fixed to the upper part of one side of the slider, the upper part of the second rotary rod is rotatably installed in the second support sleeve, the top end of the second rotary rod is connected with the power output shaft of the second motor, the second motor is connected with the electronic cabin, the second rotary sleeve is fixedly sleeved on the lower part of the second rotary rod, and the front end of the second rotary sleeve is fixedly connected with one end of the side plate.

7. The seal integrity detection apparatus of a subsea pipeline clamp of claim 6, wherein, The second rotary drive mechanism further comprises a second support fixed to the top of one side of the slider, and the second motor is fixed to the second support.

8. A method of leak detection based on the leak detection apparatus of any one of claims 1-7, characterized in that, The method comprises the following steps: Step one, install the base on the installation rack of the submarine pipeline clamp, and reach the specified depth under water with the submarine pipeline clamp; Step two, control the linear drive mechanism to move the slider to the fixed support on one side, at this time, the reading of the pressure sensing mechanism on the slider close to the fixed support on the other side is 0; Step three, control the first rotary drive mechanism and the second rotary drive mechanism to drive the outer cover plate and the side plate to rotate, so that the inner cover plate, the outer cover plate and the two side plates form a rectangular structure with an open lower end to form a measurement area; Step four, control the ultrasonic generator to start, observe the time interval data obtained by the ultrasonic generator transmission, calculate the measurement area flow on the PC according to the data, and judge whether there is leakage in the measurement area according to the measurement area flow; Step five, after a period of measurement, control the linear drive mechanism to drive the slider to move to the fixed support on the other side, and observe the reading of the pressure sensing mechanism on the slider close to the fixed support on the other side at the same time; Step six, repeat steps four to five until the reading of the pressure sensing mechanism on the slider close to the fixed support on the other side is not 0.

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