Expansion bending flange measuring instrument and measuring system

Abstract

The invention relates to the technical field of ocean engineering, in particular to an expansion bending flange measuring instrument and a measuring system, and aims to solve the problem that an existing flange measuring instrument is deformed due to traction, so that the measuring precision is insufficient. The expansion bending flange measuring instrument provided by the invention comprises a fixed disc, a first measuring semi-ring and a second measuring semi-ring, one end of the measuring rope is fixed at the circle center of the first measuring semi-ring, and the other end passes through the first measuring semi-ring and the second measuring semi-ring along the radial direction; and the measuring rope is used for driving the first measuring semi-ring and the second measuring semi-ring to swing and can swing along the circumferential directions of the first measuring semi-ring and the second measuring semi-ring. The pointer is replaced by the measuring rope in a mode that the measuring rope penetrates through the measuring semi-ring, so that the pointer is prevented from being pulled and deformed when the measuring rope is connected with the pointer, the measuring precision is ensured, the measuring angle range is enlarged, the measuring data precision is improved, and the expansion bend mounting success rate is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ocean engineering, and in particular to an expansion bend flange measuring instrument and measuring system. BACKGROUND

[0002] In offshore oil and gas development platforms and single point mooring for loading and unloading of offshore oil and gas, oil and gas is transported through submarine pipelines, and the platform riser, submarine pipeline and underwater manifold of single point mooring are connected to the submarine pipeline through expansion bends, and the flanges at both ends of the expansion bend are connected to the riser, manifold and submarine pipeline. When prefabricating the expansion bend, the relative position and angle information of the flanges of the pipelines, riser and manifold installed at both ends need to be accurately measured to ensure that the expansion bend can be successfully installed after prefabrication. With the development trend of large-diameter submarine pipelines, the measurement accuracy is required to be higher, and the accuracy of flange measurement determines the accuracy during installation. Deviation in angle and length may result in the need to re-prefabricate the expansion bend, thereby causing a large amount of standby of the ship group, greatly increasing the installation cost and prolonging the installation time.

[0003] The existing flange measuring instruments measure the flanges by installing them on the upper part or one side of the flanges, connecting the flange measuring instruments on both sides by using a steel wire rope or a steel wire as a medium, reading the angle and then measuring the length, so as to determine the relative length and angle between the flanges. The measurement accuracy is the lifeline of the flange measuring instrument. The existing flange measuring instruments are deformed due to direct pulling of the steel wire rope, thereby causing the problem of insufficient measurement accuracy and resulting in failure of installation of the expansion bend. SUMMARY

[0004] The purpose of the present application is to provide an expansion bend flange measuring instrument and measuring system to solve the problem of insufficient measurement accuracy caused by deformation of the existing flange measuring instrument due to pulling.

[0005] To solve the above technical problems, the technical solution provided by the present application is as follows:

[0006] An expansion bend flange measuring instrument, comprising a fixed disc, a first measuring half ring and a second measuring half ring.

[0007] The fixed disc is installed on the first pipeline and coaxially arranged with the first pipeline.

[0008] The first measuring half ring and the second measuring half ring are hinged to the fixed disc, the hinged axis of the first measuring half ring and the fixed disc is the first swing axis, and the hinged axis of the second measuring half ring and the fixed disc is the second swing axis.

[0009] The centers of the first measuring half ring and the second measuring half ring coincide, and the first swing axis and the second swing axis are perpendicular and intersect.

[0010] One end of the measuring rope is fixed to the center of the first measuring semicircle, and the other end passes through the first measuring semicircle and the second measuring semicircle in the radial direction;

[0011] The measuring rope is used to drive the first measuring semicircle and the second measuring semicircle to swing and can swing along the circumferential direction of the first measuring semicircle and the second measuring semicircle.

[0012] Further, the first measuring semicircle and the second measuring semicircle are provided with a through-hole penetrating in the radial direction, and the measuring rope passes through the through-hole and can swing along the circumferential direction of the first measuring semicircle and the second measuring semicircle in the through-hole.

[0013] Further, the through-hole extends along the circumferential direction of the first measuring semicircle and the second measuring semicircle.

[0014] Further, the measuring rope is provided as a steel strand or a steel wire rope.

[0015] Further, the expansion bend flange measuring instrument further comprises a correction sleeve connected with the fixed disc;

[0016] The fixed disc is provided with a threading hole, and the correction sleeve is coaxial with the threading hole;

[0017] The measuring rope passes through the threading hole and the correction sleeve and then passes through the through-hole.

[0018] Further, the expansion bend flange measuring instrument further comprises a fixed pulley installed on the side of the fixed disc away from the first measuring semicircle and the second measuring semicircle, and the measuring rope passes through the through-hole after winding around the fixed pulley.

[0019] Further, the expansion bend flange measuring instrument further comprises a connecting bolt and a positioning sleeve;

[0020] The connecting bolt is inserted into the fixed disc and the first pipeline, and the positioning sleeve is sleeved on the connecting bolt and arranged between the fixed disc and the first pipeline.

[0021] Another aspect of the present application provides an expansion bend flange measuring system, which comprises the above-mentioned expansion bend flange measuring instrument and further comprises a fixed plate installed on the second pipeline;

[0022] One end of the measuring rope is fixed to the center of the first measuring semicircle, and the other end passes through the first measuring semicircle and the second measuring semicircle in the radial direction and is fixed to the fixed plate and located on the axis of the second pipeline.

[0023] Further, the expansion bend flange measuring system further comprises a winch, and the measuring rope is wound around the winch, and the winch is installed on the first pipeline.

[0024] Further, the fixing plate is arranged as a circular plate, and the fixing plate is arranged coaxially with the second pipeline;

[0025] The end of the measuring rope is released from the winch and fixedly connected to the center of the fixing plate after passing through the expansion bend flange measuring instrument.

[0026] In combination with the above technical solutions, the technical effects that can be achieved by the present application are as follows:

[0027] The expansion bend flange measuring instrument provided by the present application comprises a fixing disc, a first measuring half ring and a second measuring half ring. The fixing disc is installed on the first pipeline and arranged coaxially with the first pipeline. The first measuring half ring and the second measuring half ring are hinged to the fixing disc. The hinging axis of the first measuring half ring and the fixing disc is the first swinging axis, and the hinging axis of the second measuring half ring and the fixing disc is the second swinging axis. The centers of the first measuring half ring and the second measuring half ring coincide, and the first swinging axis and the second swinging axis are perpendicular and intersected. One end of the measuring rope is fixed to the center of the first measuring half ring, and the other end passes through the first measuring half ring and the second measuring half ring in the radial direction. The measuring rope is used to drive the first measuring half ring and the second measuring half ring to swing and can swing along the circumferential direction of the first measuring half ring and the second measuring half ring.

[0028] The expansion bend flange measuring instrument provided by the present application replaces the pointer with the measuring rope by the way of passing the measuring rope through the measuring half ring, avoids the pulling of the pointer when the measuring rope is connected to the pointer, and thus avoids the deformation of the pointer and the measuring half ring, ensures the measurement accuracy, increases the angle range of measurement and improves the measurement data accuracy, improves the installation success rate of the expansion bend, significantly reduces the installation cost and shortens the installation time. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed in the following specific embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0030] Figure 1 The structural schematic diagram of the expansion bend flange measuring instrument provided by the embodiment of the present application is shown in the figure.

[0031] Figure 2 Another structural schematic diagram of the expansion bend flange measuring instrument provided by the embodiment of the present application is shown in the figure.

[0032] Figure 3 The structural schematic diagram of the first measuring half ring is shown in the figure.

[0033] Figure 4 A structural schematic diagram of the expansion bend flange measurement system provided by the embodiment of the present application is provided.

[0034] Figure 5 A front view of the expansion bend flange measurement system provided by the embodiment of the present application is provided.

[0035] Icon: 100-fixed disc; 200-first measurement half ring; 300-second measurement half ring; 400-correction sleeve; 500-fixed pulley; 600-connection bolt; 700-positioning sleeve; 110-threading hole; 210-threading hole; 10-first pipeline; 20-measurement rope; 101-pipeline body; 102-connection flange. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0037] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative labor are within the scope of protection of the present application.

[0038] Some embodiments of the present application will be described in detail below in combination with the drawings. The following embodiments and features in the embodiments can be combined with each other without conflict.

[0039] The existing several flange measurement instruments measure the flange by installing on the upper part or one side of the flange, connecting the two flange measurement instruments by steel wire or steel wire as medium, measuring the length after reading the angle, and thus determining the relative length and angle between the flanges. The measurement accuracy is the lifeline of the flange measurement instrument. The existing flange measurement instrument is deformed due to direct pulling of the steel wire, which further causes the problem of insufficient measurement accuracy leading to failure of expansion bend installation.

[0040] In view of the above, the present application provides an expanded bend flange measuring instrument, comprising a fixed disc 100, a first measuring half ring 200, a second measuring half ring 300; the fixed disc 100 is installed on the first pipeline 10 and coaxially arranged with the first pipeline 10; the first measuring half ring 200 and the second measuring half ring 300 are hinged to the fixed disc 100, the hinged axis of the first measuring half ring 200 and the fixed disc 100 is the first swing axis, and the hinged axis of the second measuring half ring 300 and the fixed disc 100 is the second swing axis; the centers of the first measuring half ring 200 and the second measuring half ring 300 coincide, and the first swing axis and the second swing axis are perpendicular to each other; one end of the measuring rope 20 is fixed to the center of the first measuring half ring 200, and the other end passes through the first measuring half ring 200 and the second measuring half ring 300 in the radial direction; the measuring rope 20 is used to drive the first measuring half ring 200 and the second measuring half ring 300 to swing and can swing along the circumference of the first measuring half ring 200 and the second measuring half ring 300.

[0041] The expanded bend flange measuring instrument provided by the present application realizes the replacement of the pointer by the measuring rope 20 in the form of passing through the measuring half ring, avoids the pulling of the pointer when the measuring rope 20 is connected with the pointer, avoids the deformation of the pointer and the measuring half ring, ensures the measurement accuracy, increases the angle range of the measurement and improves the measurement data accuracy, improves the installation success rate of the expanded bend, significantly reduces the installation cost and shortens the installation time.

[0042] The following will be described in detail Figures 1-5 The structure and shape of the expanded bend flange measuring instrument provided by the present embodiment will be described in detail:

[0043] In an optional scheme of the present embodiment, the fixed disc 100 and the first measuring half ring 200 and the second measuring half ring 300 are connected by a hinge to realize the hinging, and a hinged shaft can also be used for the connection. Among them, the first measuring half ring 200 and the second measuring half ring 300 are the same in structure, and only the inner diameter of the first measuring half ring 200 is larger than the outer diameter of the second measuring half ring 300 to ensure that they do not interfere with each other during swinging. In addition, the plane where the first swing axis and the second swing axis are located is perpendicular to the axis of the fixed disc 100.

[0044] In the present embodiment, the first measuring half ring 200 and the second measuring half ring 300 are both provided with a through hole 210 penetrating in the radial direction, and the measuring rope 20 passes through the through hole 210 and can swing along the circumference of the first measuring half ring 200 and the second measuring half ring 300 in the through hole 210. Specifically, the through hole 210 extends along the circumference of the first measuring half ring 200 and the second measuring half ring 300, as shown in Figure 3 Further, the width of the through hole 210 is equal to the diameter of the measuring rope 20 to ensure the measurement accuracy.

[0045] In the embodiment, the first measuring half ring 200 and the second measuring half ring 300 are made of double-layer light aluminum alloy plates. The double-layer aluminum alloy plates are hollow to form the wire passing hole 210, i.e. the swing space of the measuring rope 20.

[0046] In an optional solution of the embodiment, the expansion bend flange measuring instrument further comprises a correction sleeve 400 connected with the fixed disc 100. The fixed disc 100 is provided with a wire passing hole 110 extending along the axial direction of the fixed disc 100. The correction sleeve 400 is coaxially arranged with the wire passing hole 110. After the measuring rope 20 passes through the wire passing hole 110 and the correction sleeve 400, the measuring rope 20 passes through the wire passing hole 210 of the second measuring half ring 300 and the first measuring half ring 200, so as to ensure that the measuring rope 20 swings around the center of the first measuring half ring 200, which is equivalent to fixing the measuring rope 20 at the center of the first measuring half ring 200. That is, the end of the correction sleeve 400 away from the fixed disc 100 is the center of the first measuring half ring 200 and the second measuring half ring 300.

[0047] In the embodiment, the expansion bend flange measuring instrument further comprises a fixed pulley 500, a connecting bolt 600 and a positioning sleeve 700. The fixed pulley 500 is installed on the side of the fixed disc 100 away from the first measuring half ring 200 and the second measuring half ring 300, and the measuring rope 20 passes through the wire passing hole 210 after winding around the fixed pulley 500. The connecting bolt 600 is inserted into the connecting holes of the fixed disc 100 and the first pipeline 10 and locked by a nut. In actual use, the measuring rope 20 is wound on a fixed tension winch to control the tension of the measuring rope 20 and ensure constant tension. Specifically, the fixed tension winch is fixed to the first pipeline 10, one end of the measuring rope 20 is connected to the fixed tension winch, and the other end is turned after winding around the fixed pulley 500, and then passes through the wire passing hole 110, the correction sleeve 400 and the wire passing hole 210 in sequence and is connected to the second pipeline. The first pipeline 10 comprises a pipeline body 101 and a connecting flange 102. The pipeline body 101 is connected with the connecting flange 102. The connecting flange 102 is used for connecting with the fixed disc 100. The connecting bolt 600 is simultaneously inserted into the fixed disc 100 and the connecting flange 102.

[0048] Specifically, two fixed pulleys 500 are arranged in the embodiment. One fixed pulley 500 is located at the outer edge of the fixed disc 100, and the other fixed pulley 500 is located at the center position of the fixed disc 100, which is used to guide the measuring rope 20 from the outside into the wire passing hole 110. In order to ensure the wire passing space of the measuring rope 20 and the arrangement space of the fixed pulley 500, the positioning sleeve 700 is sleeved on the connecting bolt 600 and arranged between the fixed disc 100 and the connecting flange 102, so as to leave a space between the fixed disc 100 and the first pipeline 10 and ensure that the fixed disc 100 is parallel to the connecting flange 102, as shown in Figure 5 Specifically, the positioning sleeve 700 can be a nut, which is used by stacking multiple nuts to leave appropriate space, as shown inFigure 2 as shown.

[0049] In this embodiment, the measuring rope 20 can be provided as a steel strand or a steel wire rope.

[0050] Based on the expansion bend flange measuring instrument proposed in this embodiment, an expansion bend flange measuring system is proposed, which comprises the expansion bend flange measuring instrument described above, and further comprises a fixing plate and a winch. The winch is provided as a constant tension winch, the measuring rope 20 is wound on the winch, and the winch is installed on the first pipeline 10; the fixing plate is provided as a circular plate and is coaxially arranged with the second pipeline.

[0051] Specifically, the fixing plate is installed on the second pipeline, the measuring rope 20 is fixed to the center of the first measuring half ring 200 through the correction sleeve 400 to form a fixed end, and the other end of the measuring rope 20 is fixed to the fixing plate after passing through the first measuring half ring 200 and the second measuring half ring 300 in the radial direction and located on the axis of the second pipeline.

[0052] In actual use, the end of the measuring rope 20 is released from the winch and fixedly connected to the center of the fixing plate after passing through the expansion bend flange measuring instrument.

[0053] The working process of the expansion bend flange measuring system provided in this embodiment is as follows:

[0054] Three to four connecting bolts 600 are installed underwater to fix the expansion bend flange measuring instrument and the fixing plate on the connecting flange 102 of the first pipeline 10 and the second pipeline respectively, the constant tension winch is fixed to the first pipeline 10, one end of the measuring rope is connected to the constant tension winch, the other end is reversed by passing through the fixed pulley 500 and sequentially passes through the threading hole 110, the correction sleeve 400, the wire passing hole 210 of the second measuring half ring 300 and the wire passing hole 210 of the first measuring half ring 200 and is connected to the fixing plate. The constant tension winch is set to a predetermined tension and is marked to obtain length data; at the same time, the first measuring half ring 200 and the second measuring half ring 300 are read and photographed to obtain relative angle data.

[0055] Finally, the tension is read on the deck to read the length and angle parameters of the steel strand to guide the prefabrication of the expansion bend, so as to ensure that the expansion bend can accurately connect the first pipeline 10 and the second pipeline.

[0056] The expansion bend flange measuring system provided in this embodiment can accurately measure the angle and distance between the flanges of the connected pipelines, eliminates the influence of tension, avoids the change of the gap, displacement and deformation of the pointer and related parts caused by the pulling of the measuring rope 20, and ensures the measurement accuracy.

[0057] The expansion bend flange measuring instrument provided by the embodiment can greatly increase the size of the measuring half ring, thereby improving the data reading accuracy and improving the measurement accuracy to the order of 0.1 degrees to accurately measure the relative angle between the flanges, providing accuracy guarantee for the installation of the large-diameter pipeline expansion bend, reducing the probability of rework and the preset internal stress of the expansion bend. If the size of the existing measuring instrument is increased, a longer cantilever structure and a decrease in its own stiffness will be caused, which will affect the measurement accuracy. When in use, the measuring half ring moves with the rope in the area where the measuring rope 20 has a large stiffness, and the self stiffness has little effect on the measurement result, and the angle of the measuring rope 20 can be truly fed back.

[0058] The connection stiffness and stability of the force state between the flange measuring instrument and the connecting flange 102 and the local deformation can cause deviation of the measurement result. The embodiment avoids the cantilever mounting mode of the existing flange measuring instrument by connecting the fixed disc 100 with the measured pipeline, which not only ensures the connection strength and stability, but also avoids the measurement error caused by the stress deformation of the cantilever structure, thereby ensuring the stability of the measurement process and the accuracy of the measurement.

[0059] The embodiment adopts the constant tension distance measurement method, and the constant tension winch is used to ensure that the state of the measuring rope 20 is consistent during measurement and reading, so as to eliminate the length change of the measuring rope 20 caused by the change of the tension, and ensure the accuracy of the length data. The existing measurement method is affected by the marine environment, and when the tension of the measuring rope 20 is not enough, the deflection will be caused, thereby affecting the length measurement, and when the tension is too large, the elastic deformation of the flange measuring instrument will be caused, thereby affecting the measurement result.

[0060] The expansion bend flange measuring system provided by the embodiment can greatly improve the one-time success rate of the installation of the expansion bend, and avoid the waste of time and cost caused by multiple installations.

[0061] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An expansion bend flange measuring instrument, characterized in that, It includes a fixed plate (100), a first measuring half-ring (200), and a second measuring half-ring (300); The fixed plate (100) is installed on the first pipe (10) and is coaxially arranged with the first pipe (10); The first measuring half-ring (200) and the second measuring half-ring (300) are hinged to the fixed disk (100), with the hinge axis between the first measuring half-ring (200) and the fixed disk (100) as the first swing axis, and the hinge axis between the second measuring half-ring (300) and the fixed disk (100) as the second swing axis. The centers of the first measuring half-ring (200) and the second measuring half-ring (300) coincide, and the first swing axis intersects the second swing axis perpendicularly; One end of the measuring rope (20) is fixed to the center of the first measuring half-ring (200), and the other end passes through the first measuring half-ring (200) and the second measuring half-ring (300) in the radial direction; The measuring rope (20) is used to drive the first measuring half-ring (200) and the second measuring half-ring (300) to swing and can swing around the circumference of the first measuring half-ring (200) and the second measuring half-ring (300).

2. The expansion bend flange measuring instrument according to claim 1, characterized in that, Both the first measuring half-ring (200) and the second measuring half-ring (300) are provided with a radially penetrating wire hole (210). The measuring rope (20) passes through the wire hole (210) and can swing around the first measuring half-ring (200) and the second measuring half-ring (300) circumferentially within the wire hole (210).

3. The expansion bend flange measuring instrument according to claim 2, characterized in that, The wire hole (210) extends circumferentially along the first measuring half-ring (200) and the second measuring half-ring (300).

4. The expansion bend flange measuring instrument according to claim 1, characterized in that, The measuring rope (20) is set as a steel strand or steel wire rope.

5. The expansion bend flange measuring instrument according to claim 2, characterized in that, It also includes a calibration sleeve (400) connected to the fixed plate (100); The fixed plate (100) is provided with a threading hole (110), and the correction sleeve (400) is coaxial with the threading hole (110); The measuring rope (20) passes through the threading hole (110) and the calibration sleeve (400) and then through the wire passage hole (210).

6. The expansion bend flange measuring instrument according to claim 5, characterized in that, It also includes a fixed pulley (500), which is installed on the side of the fixed plate (100) away from the first measuring half ring (200) and the second measuring half ring (300), and the measuring rope (20) passes through the wire hole (210) after passing around the fixed pulley (500).

7. The expansion bend flange measuring instrument according to claim 6, characterized in that, It also includes connecting bolts (600) and positioning sleeves (700); The connecting bolt (600) is inserted into the fixing plate (100) and the first pipe (10), and the positioning sleeve (700) is fitted onto the connecting bolt (600) and positioned between the fixing plate (100) and the first pipe (10).

8. A measurement system for expansion bend flanges, characterized in that, The expansion bend flange measuring instrument as described in any one of claims 1-7 further includes a fixing plate, the fixing plate being mounted on the second pipe; One end of the measuring rope (20) is fixed to the center of the first measuring half-ring (200), and the other end passes through the first measuring half-ring (200) and the second measuring half-ring (300) in the radial direction and is then fixed to the fixing plate and located on the axis of the second pipe.

9. The expansion bend flange measuring system according to claim 8, characterized in that, It also includes a winch, on which the measuring rope (20) is wound, and the winch is installed in the first pipe (10).

10. The expansion bend flange measuring system according to claim 9, characterized in that, The fixing plate is a circular plate, and the fixing plate is coaxially arranged with the second pipe; The end of the measuring rope (20) is released from the winch and fixed to the center of the fixed plate after passing through the expansion bend flange measuring instrument.

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