Deflection measuring system and method of semi-submersible barge and semi-submersible barge

Abstract

The invention relates to the technical field of ship deflection measurement, in particular to a deflection measurement system and method for a semi-submersible barge and the semi-submersible barge, the deflection measurement system is long in service life and more stable in structure by adopting steel cylindrical measurement cylinders, meanwhile, the liquid level value of each measurement cylinder is detected in real time by adopting a magnetostrictive liquid level sensor, and the measurement accuracy is improved. The precision of the sensor is high, so that the measurement precision of the deflection measurement system is further improved; according to the deflection measurement method, liquid level parameters are measured, the method is more sensitive than pressure difference data measurement, and the measurement precision and sensitivity can be further improved; the semi-submersible barge adopts the deflection measuring system and the deflection measuring method, the service life is longer, the measuring precision and the sensitivity are higher, the measuring cylinder is limited to be arranged at the position close to the strong frame, the longitudinal bulkhead and / or the transverse bulkhead, the measuring cylinder is not prone to being influenced by deformation of the barge, the measuring precision is higher, and the measuring accuracy is higher. And the deflection deformation of the semi-submersible barge in the shipping process can be accurately obtained.

Description

Technical Field

[0001] The present invention relates to the technical field of ship deflection measurement, and in particular to a deflection measurement system and a measurement method of a semi-submersible barge and the semi-submersible barge. Background Art

[0002] When using semi-submersible barges to transport submerged tubes, the hull will produce deflection. However, the stiffness of the submerged tubes is different from that of the semi-submersible barges. The deflection of the submerged tubes must be controlled within the range of cracking of the submerged tubes. In order to control the deflection of the hull, prevent the deformation from exceeding the control range, and ensure the safety of the ship and the load, deflection monitoring is required during the transportation process to determine whether the deformation of the hull is within the safe design range.

[0003] The existing deflection measurement methods mainly include the micrometer method, the level method, the global positioning system method, the laser method and the semi-closed connecting pipe method. Among them, the connecting pipe method generally adopts a distributed riser connected by a connecting pipe. Based on the connecting pipe principle, the pressure difference change between the highest liquid level in the riser and the sensor is monitored, and the pressure difference signal before and after deformation is collected to obtain the deflection deformation result.

[0004] However, the risers of the existing connecting pipe method deflection measurement system are generally arranged on both sides of the main deck along the longitudinal direction, and the connecting pipes are fixed on the main deck. Although the deformation of the main deck can be obtained, the main deck itself will be deformed during use due to temperature, service life, etc., which will affect the measurement accuracy of the deflection measurement system, resulting in the need to improve the measurement accuracy of the existing connecting pipe method deflection measurement system. Summary of the invention

[0005] The purpose of the present invention is to overcome the shortcoming that the measurement accuracy of the deflection measurement system of the connecting pipe method in the prior art needs to be improved, and to provide a deflection measurement system, a measurement method and a semi-submersible barge.

[0006] In a first aspect, the present invention provides a deflection measurement system for a semi-submersible barge, comprising a measuring tube; The measuring cylinder is a steel cylindrical structural member, and the measuring cylinder contains liquid; A plurality of the measuring cylinders are arranged in a longitudinal arrangement, and adjacent measuring cylinders are connected via a connecting pipe; The side wall of the measuring cylinder above the liquid level is provided with a ventilating elbow opening downward; The top of the measuring cylinder is detachably connected to a magnetostrictive liquid level sensor, the magnetostrictive liquid level sensor extends into the measuring cylinder, the magnetostrictive liquid level sensor is communicatively connected to a liquid level measurement system, and the liquid level measurement system uses a deflection calculation model based on a liquid level signal to calculate and display the deflection.

[0007] The deflection measuring system of a semi-submersible barge of the present invention has a long service life and a more stable structure by adopting a measuring tube made of a steel cylinder. At the same time, the measuring tubes arranged in a longitudinal direction constitute a deflection measuring system based on a connecting pipe method. Adjacent measuring tubes are connected along the arrangement direction, which can match the shape of the semi-submersible barge, realize deflection monitoring of a single longitudinal area, and have higher measurement accuracy. A magnetostrictive liquid level sensor is adopted to detect the liquid level value of each measuring tube in real time. The magnetostrictive liquid level sensor realizes liquid level detection based on an internal float, can rise and fall with the rise and fall of the liquid surface, is not affected by the density of the liquid medium, has high sensor accuracy, and has high liquid level detection sensitivity, so that the measurement accuracy and measurement sensitivity of the deflection measuring system can be further improved. In addition, the liquid level data of each measuring tube is obtained through a remotely connected liquid level measurement system, and then calculated and displayed through a deflection calculation model. Compared with the existing connecting pipe method pressure difference signal collection, the liquid level data is easier to collect and has higher accuracy, so that the measurement accuracy and measurement sensitivity of the semi-submersible barge can be further improved.

[0008] Preferably, the connecting pipe is connected to the measuring tube flange, and the connecting pipe is provided with at least one bellows expansion joint. The bellows expansion joint enables the connecting pipes between adjacent measuring tubes to have a certain deformation capacity, thereby avoiding the influence of the hull deflection change on the structure of the measuring system, and having a higher pressure bearing capacity, being more durable, and being adaptable to various working conditions.

[0009] Preferably, the measuring cylinder comprises a lower cylinder section and an upper cylinder section connected by flanges, the height of the lower cylinder section is smaller than the height of the upper cylinder section, and the adjacent lower cylinder sections are connected by the connecting pipe. The connecting pipe is located close to the lower part of the measuring cylinder, which is convenient for installation and maintenance and ensures the normal use of the deflection measurement system structure.

[0010] Preferably, the measuring cylinder is provided with a replenishment and drainage branch pipe, the communication position between the replenishment and drainage branch pipe and the measuring cylinder is located below the connecting pipe, and the replenishment and drainage branch pipe is provided with a first stop valve, so as to realize the measurement range adjustment in the case of severe tilting of the ship.

[0011] Preferably, the measuring cylinder is connected with a visual inspection tube, which is a transparent material structural member, and the visual inspection tube is arranged at the same height as the measuring cylinder, and the connecting position between the visual inspection tube and the measuring cylinder is located below the connecting tube, and a second stop valve is arranged between the visual inspection tube and the measuring cylinder. The liquid level information in the measuring cylinder can be directly observed through the visual inspection tube, which is convenient for the staff to perform the replenishment and drainage operation in time, and ensure the normal use of the deflection measurement system.

[0012] Preferably, a support is provided at the bottom of the measuring tube, so as to improve the installation stability of the measuring tube and ensure the connection between the measuring tube and the semi-submersible barge is stable.

[0013] Preferably, the liquid level measurement system comprises a liquid level measurement box and a loading computer, wherein the liquid level measurement box is arranged on the safety deck, and the loading computer has built-in 3D dynamic posture software and a deflection calculation model, and can display deflection numbers and curves; The deflection calculation model includes: Where: n is the serial number of the measuring cylinders along the arrangement direction; is the relative deflection value of the position of the measuring cylinder with serial number n; is the intermediate variable used to calculate the relative deflection value; is the absolute deflection value of the position of the measuring cylinder with serial number n; is the absolute deflection value of the position where the measuring cylinder with the largest serial number is located; is the trim angle of the ship; The center distance between the measuring cylinder with sequence number 1 and the measuring cylinder with the largest sequence number; is the center distance between the measuring cylinders numbered n and n+1.

[0014] Preferably, a plurality of the measuring cylinders are arranged longitudinally, and at least two rows of the measuring cylinders are respectively connected to the liquid level measurement system, so that a deflection monitoring area is formed between two adjacent rows of the measuring cylinders. By real-time monitoring of the liquid level data at the points where the measuring cylinders are located, the deflection deformation monitoring in a certain area of ​​the semi-submersible barge is realized, which is suitable for use in different areas of the ship.

[0015] In a second aspect, the present invention provides a method for measuring the deflection of a semi-submersible barge, comprising: S1, establishing a deflection measurement system as described above; S2, collecting liquid level data in each measuring cylinder, and transmitting the data to the liquid level measurement system for deflection calculation and display.

[0016] The deflection measurement method of a semi-submersible barge of the present invention can improve the system measurement accuracy and measurement sensitivity in hardware by adopting the structure of the above-mentioned deflection measurement system. At the same time, by adopting a method of measuring liquid level parameters, it is more sensitive than the pressure difference measurement data of the prior art, and can further improve the measurement accuracy and sensitivity.

[0017] In a third aspect, the present invention provides a semi-submersible barge, comprising two tunnels and a deflection measurement system for a semi-submersible barge as described above; a plurality of measuring tubes are arranged longitudinally in the tunnel, and the measuring tubes in two adjacent rows correspond to each other one by one; The measuring tubes are fixed on the ship's strong frame, and a plurality of the measuring tubes are arranged on the bottom plate near the longitudinal bulkhead and / or the transverse bulkhead; the measuring tubes in each row are numbered in sequence, and liquid level signals are collected respectively.

[0018] A semi-submersible barge of the present invention has a longer service life, higher measurement accuracy and sensitivity by adopting the above-mentioned deflection measuring system and deflection measuring method, and limits the measuring tube to be set at a position close to the strong frame, longitudinal bulkhead and / or transverse bulkhead, so that the measuring tube is not easily affected by the deformation of the ship itself, and has high measurement accuracy. The deflection deformation of the semi-submersible barge during transportation can be accurately obtained to ensure the safe transportation of the semi-submersible barge. By arranging the measuring tubes in two pipe lanes, the setting of the deflection measurement system is facilitated, forming a semi-submersible barge with a deflection measurement system having point-surface combination characteristics.

[0019] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention provides a deflection measurement system for a semi-submersible barge, which has a longer service life and a more stable structure by adopting a steel cylindrical measuring tube; 2. The present invention provides a deflection measurement system for a semi-submersible barge. The deflection measurement system based on the connecting tube method is formed by longitudinally arranged measuring tubes. Adjacent measuring tubes are connected along the arrangement direction, which can match the shape of the semi-submersible barge, realize the deflection monitoring of a single longitudinal area, and have higher measurement accuracy. 3. The present invention provides a deflection measurement system for a semi-submersible barge, which uses a magnetostrictive liquid level sensor to detect the liquid level value of each measuring cylinder in real time. The magnetostrictive liquid level sensor realizes liquid level detection based on an internal float and can rise and fall with the liquid level. It is not affected by the density of the liquid medium. The sensor has high accuracy, so that the measurement accuracy of the deflection measurement system can be further improved. 4. The present invention provides a deflection measurement system for a semi-submersible barge, which obtains the liquid level data of each measuring cylinder through a remotely connected liquid level measurement system, and then calculates and displays it through a deflection calculation model. The collection of liquid level data is easier and more accurate than the existing differential pressure signal collection by the connecting pipe method, and can further improve the measurement accuracy of the semi-submersible barge; 5. The present invention provides a method for measuring the deflection of a semi-submersible barge. By adopting the structure of the above-mentioned deflection measurement system, the measurement accuracy of the system can be improved in hardware. 6. The present invention provides a method for measuring the deflection of a semi-submersible barge. By adopting a method for measuring liquid level parameters, the pressure difference data measured in the prior art is more sensitive, and the measurement accuracy and sensitivity can be further improved; 7. The present invention provides a semi-submersible barge, which has a longer service life, higher measurement accuracy and sensitivity by adopting the above-mentioned deflection measurement system and deflection measurement method, and limits the measuring tube to be set on a strong frame, close to the longitudinal bulkhead and / or transverse bulkhead, so that the measuring tube is not easily affected by the deformation of the ship itself, has high measurement accuracy, and can accurately obtain the deflection deformation of the semi-submersible barge during transportation, thereby ensuring the safe transportation of the semi-submersible barge. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 It is a front view of the measuring tube described in Example 1; Figure 2 is a side view of the measuring cylinder described in Example 1; Figure 3 This is a schematic structural diagram of a deflection measurement system for a semi-submersible barge in Example 1; Figure 4 Schematic diagram of the structure of the liquid level measurement system described in Example 1; Figure 5 A schematic diagram of the arrangement of a deflection measurement system of a semi-submersible barge on a semi-submersible barge according to Example 1; Figure 6 This is the modeling calculation diagram of seven measuring tubes before a certain hull deflects; Figure 7 Modeling and calculation of seven measuring tubes after a ship hull deflects Figure 1 ; Figure 8 Modeling and calculation of seven measuring tubes after a ship hull deflects Figure 2 ; Fig. 9 A schematic diagram of a deflection curve obtained by a deflection measurement system of a semi-submersible barge in Example 1; Fig.10 Schematic diagram of the deflection level deviation corresponding to the single-row measuring cylinder in Example 1; Fig.11 Schematic diagram of the deflection level deviation corresponding to the double-row measuring cylinder in Example 1; Markings in the figure: 1-measuring cylinder, 11-lower cylinder section, 12-upper cylinder section, 13-clamp assembly, 2-connecting pipe, 21-corrugated expansion joint, 3-ventilation elbow, 4-magnetostrictive liquid level sensor, 5-liquid replenishment and drainage branch pipe, 51-first stop valve, 6-visual inspection tube, 61-second stop valve, 7-support, 8-liquid level measurement system, 81-liquid level measurement box, 82-loading computer, 9-ship, 91-pipeway, 92-strong frame, 93-longitudinal bulkhead, 94-transverse bulkhead. DETAILED DESCRIPTION

[0021] The present invention is further described in detail below in conjunction with specific embodiments. However, this should not be understood as the scope of the above subject matter of the present invention being limited to the following embodiments, and all technologies realized based on the content of the present invention belong to the scope of the present invention.

[0022] Unless otherwise specified, in the description of the specific embodiments of the present invention, the terms indicating the orientation or position relationship such as "up", "down", "left", "right", "center", "inside", "outside", etc. are all expressions based on the orientation or position relationship shown in the drawings, or are the orientation or position relationship when the invented product / device / system is usually used. These terms of orientation or position relationship are only for the convenience of describing the scheme of the present invention or simplifying the description in the specific embodiments to facilitate the technicians to quickly understand the scheme, rather than indicating or implying that a specific system / component / element must have a specific orientation, or be constructed and operated in a specific position relationship, and therefore cannot be understood as a limitation on the present invention.

[0023] In addition, if the terms "horizontal", "vertical", "overhanging", "parallel" and the like appear, it does not mean that the corresponding system / component / element is required to be absolutely horizontal or vertical or overhanging or parallel, but it can be slightly tilted or have deviations. For example, "horizontal" only means that its direction is more horizontal than "vertical", and it does not mean that the structure must be completely horizontal, but it can be slightly tilted. Alternatively, it can be simplified to mean that the corresponding system / component / element is set in the direction of "horizontal", "vertical", "overhanging", "parallel" and the like, and can have an error / deviation of ±10% relative to the corresponding direction setting, more preferably an error / deviation within ±8%, more preferably an error / deviation within ±6%, more preferably an error / deviation within ±5%, and more preferably an error / deviation within ±4%. As long as the corresponding system / component / element is within the error / deviation range, it can still achieve its role in the scheme of the present invention.

[0024] In addition, the expressions “first”, “second”, “third”, etc., which appear in the terms, are merely used to distinguish the description of the same or similar components and should not be understood as emphasizing or implying the relative importance of specific components.

[0025] In addition, in the description of the embodiments of the present invention, "several", "plurality" and "a number" represent at least 2. It can be any number such as 2, 3, 4, 5, 6, 7, 8, 9, and even more than 9.

[0026] In addition, in the description of the technical solution of the present invention, unless otherwise clearly specified / defined / restricted, the terms "set", "install", "connect", "connected", "provided with", "laid", and "arranged" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, and can be welding, riveting, bolting, threading, and other commonly used connection means in the field. This connection can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the internal connection of two elements.

[0027] Example 1 like Figure 1-Figure 3 As shown, a deflection measurement system for a semi-submersible barge comprises a measuring tube 1, a connecting pipe 2, a support 7 and a liquid level measurement system 8. The measuring tube 1 is a steel cylindrical structural member, and liquid is contained in the measuring tube 1. A plurality of measuring tubes 1 are arranged longitudinally, and adjacent measuring tubes 1 are connected through the connecting pipe 2. A ventilating elbow 3 with an opening downward is provided on the side wall of the measuring tube 1 above the liquid level A. A magnetostrictive liquid level sensor 4 is detachably connected to the top of the measuring tube 1, and the magnetostrictive liquid level sensor 4 extends into the measuring tube 1. The magnetostrictive liquid level sensor 4 is communicatively connected to the liquid level measurement system 8, and the liquid level measurement system 8 uses a deflection calculation model based on a liquid level signal to calculate and display the deflection.

[0028] A deflection measurement system for a semi-submersible barge in this embodiment comprises a plurality of longitudinally arranged measuring tubes 1 which are connected in the arrangement direction via a connecting pipe 2 and are arranged on a longitudinal frame semi-submersible barge. Each measuring tube 1 is connected to atmospheric pressure via a ventilated curved pipe 3. Under air pressure, the liquid levels in each measuring tube 1 are consistent. The arranged combination of measuring tubes 1 can match the shape of the semi-submersible barge to achieve deflection monitoring in a single longitudinal region. When the deflection of the hull changes, the liquid flows between the measuring tubes 1 to change the liquid level in the measuring tubes 1. By collecting the liquid level data in each measuring tube 1 and processing the data, the absolute deflection change value and the relative deflection change value of the hull can be obtained.

[0029] A deflection measurement system for a semi-submersible barge of the present embodiment adopts a measuring tube 1 made of a steel cylinder, so that the service life of the measuring tube 1 is longer and the structure is more stable. At the same time, a magnetostrictive liquid level sensor 4 is used to detect the liquid level value of each measuring tube 1 in real time. The magnetostrictive liquid level sensor 4 realizes liquid level detection based on an internal float, and can rise and fall with the rise and fall of the liquid level, and is not affected by the density of the liquid medium. Compared with the pressure measurement, which needs to consider the influence of the change in the density of the liquid medium, the magnetostrictive liquid level sensor 4 can accurately detect the liquid level information in the measuring tube 1. The sensor has high accuracy and high liquid level detection sensitivity, so that the measurement accuracy and measurement sensitivity of the deflection measurement system can be further improved; in addition, the liquid level data of each measuring tube 1 is obtained through the remotely connected liquid level measurement system 8, and then automatically calculated and displayed through the deflection calculation model. The collection of liquid level data is easier and more accurate than the pressure difference signal collection of the existing connecting pipe 2 method, which can further improve the measurement accuracy and measurement sensitivity of the semi-submersible barge.

[0030] In an optional embodiment, the magnetostrictive liquid level sensor 4 is coaxially and vertically arranged with the measuring tube 1 , and the magnetostrictive liquid level sensor 4 is connected to the top flange of the measuring tube 1 , which facilitates the disassembly and assembly of the magnetostrictive liquid level sensor 4 and facilitates installation and maintenance.

[0031] In an optional embodiment, one end of the air-permeable elbow 3 penetrates the measuring tube 1 radially along the measuring tube 1, and the other end is connected to a 90° elbow, and the opening of the elbow faces downward.

[0032] In one or more embodiments, the connecting pipe 2 and the measuring tube 1 can be connected by flanges, and each connecting pipe 2 is provided with a bellows expansion joint 21. The bellows expansion joint 21 is provided so that the connecting pipes 2 between adjacent measuring tubes 1 have a certain deformation capacity, thereby avoiding the influence of the hull deflection change on the structure of the measuring system, and having a higher pressure bearing capacity, being more durable, and being adaptable to various working conditions.

[0033] In one or several embodiments, a liquid replenishment and drainage branch pipe 5 is provided on the measuring cylinder 1, and the liquid replenishment and drainage branch pipe 5 is used to manually adjust the amount of liquid in the measuring cylinder 1. The liquid replenishment and drainage branch pipe 5 includes a first stop valve 51. A straight pipe joint on one side of the first stop valve 51 is connected to the side wall of the measuring cylinder 1, and a joint on the other side is connected to a curved pipe to facilitate the discharge operation of the liquid in the measuring cylinder 1.

[0034] In an optional embodiment, the connecting position between the liquid replenishment and drainage branch pipe 5 and the measuring cylinder 1 is located below the connecting pipe 2, and all the liquid in the measuring cylinder 1 can be discharged through the liquid replenishment and drainage branch pipe 5. In addition, when the ship 9 is severely tilted, the total amount of liquid in each measuring cylinder 1 can be adjusted so that the measuring cylinder 1 can still be used normally after being tilted, thereby realizing the measurement range adjustment of the deflection measurement system.

[0035] In one or several embodiments, the measuring cylinder 1 is connected to a visual inspection tube 6, which is a transparent material structural component. The visual inspection tube 6 is used to more intuitively observe the liquid level information in the measuring cylinder 1. The visual inspection tube 6 is at the same height as the measuring cylinder 1 and is vertically arranged. The connecting position between the visual inspection tube 6 and the measuring cylinder 1 is located below the connecting tube 2. A second stop valve 61 is provided between the visual inspection tube 6 and the measuring cylinder 1. A straight pipe joint on one side of the second stop valve 61 is connected to the side wall of the measuring cylinder 1, and a 90° elbow joint on the other side is connected to the visual inspection tube 6, which is convenient for the staff to perform replenishment and drainage operations in time to ensure the normal use of the deflection measurement system.

[0036] In one or more embodiments, the measuring cylinder 1 may include a flange-connected lower cylinder section 11 and an upper cylinder section 12, the lower cylinder section 11 is used to install the connecting pipe 2, the replenishing and draining branch pipe 5 and the visual inspection tube 6, and the height of the lower cylinder section 11 is less than the height of the upper cylinder section 12. The connecting pipe 2, the replenishing and draining branch pipe 5 and the visual inspection tube 6 are all arranged close to the lower part of the measuring cylinder 1, which is convenient for installation and maintenance and ensures the normal use of the deflection measurement system structure.

[0037] In an optional implementation manner, the lower cylinder segment 11 and the upper cylinder segment 12 are respectively fixed in position by means of a clamp assembly 13 to further improve the installation stability of the measuring cylinder 1 .

[0038] In one or several embodiments, a support 7 may be provided at the bottom of the measuring tube 1 , and the support 7 is used to support the measuring tube 1 , so that the measuring tube 1 can be installed more stably, and the support 7 can realize a stable connection between the measuring tube 1 and the semi-submersible barge.

[0039] In an optional implementation, the support 7 may be a door-shaped steel plate support with a height of about 200 mm.

[0040] In an optional embodiment, the plane where the support 7 of the gate-shaped steel plate bracket is located is perpendicular to the connecting piece of the clamp assembly that limits and fixes the measuring tube 1, ensuring the stable setting of the measuring tube 1 and preventing the support 7 from becoming unstable due to the deformation of the hull deflection.

[0041] In one or several embodiments, the liquid level measurement system 8 includes a liquid level measurement box 81 and a loading computer 82. The liquid level measurement box 81 is arranged on the safety deck, and is used to collect the liquid level data collected by the magnetostrictive liquid level sensor 4 in each measuring cylinder 1, and transmit it to the loading computer 82. The loading computer 82 has built-in 3D dynamic posture software and deflection calculation model, which is used for digital display of deflection, deflection curve display and 3D dynamic display, so as to realize data processing and display of detection results.

[0042] Specifically, the deflection calculation model includes: Where: n is the serial number of the measuring cylinders along the arrangement direction; is the relative deflection value of the position of the measuring cylinder with serial number n; is the intermediate variable used to calculate the relative deflection value; is the absolute deflection value of the position of the measuring cylinder with serial number n; is the absolute deflection value of the position where the measuring cylinder with the largest serial number is located; is the trim angle of the ship; The center distance between the measuring cylinder with sequence number 1 and the measuring cylinder with the largest sequence number; is the center distance between the measuring cylinders numbered n and n+1.

[0043] In an optional embodiment, the measuring cylinders 1 can be arranged in a single row to form a single longitudinal direction deflection monitoring, such as Figure 6 As shown, seven measuring cylinders 1 are arranged in an array to form a deflection measuring system.

[0044] In an optional embodiment, the measuring cylinders 1 can be arranged in multiple rows, and at least two rows of measuring cylinders 1 are respectively connected to the liquid level measurement system 8, so that a deflection monitoring area is formed between two adjacent rows of measuring cylinders 1. Figure 5 As shown, two rows of 9 measuring cylinders 1 are arranged to form a deflection measurement system, which can monitor the deflection deformation of the area between the measuring cylinders 1 in adjacent rows.

[0045] A deflection measurement system consisting of seven measuring tubes 1 arranged longitudinally along the port and starboard sides of a semi-submersible barge is taken as an example for explanation. The seven measuring tubes 1 are arranged longitudinally at intervals, and the lower parts of adjacent measuring tubes 1 are connected by a connecting pipe 2. The connecting pipe 2 is provided with a bellows expansion joint 21. The seven measuring tubes 1 are numbered in sequence from 1# to 7#. When the deflection of the hull changes, the liquid height in each measuring tube 1 changes, and the number of measuring tubes 1 is adjusted according to actual conditions.

[0046] like Figure 6 As shown in the figure, it is the modeling calculation diagram of seven measuring tubes 1 before a certain hull deflects. Figure 7 As shown in the figure, it is a modeling calculation diagram of a hull with deflection deformation and a certain ship inclination angle. At this time, the deflection deformation baseline is established based on the deflection of both sides of 1# and 7#. Since the hull has a longitudinal inclination angle, the absolute deflection value > ; Combined with the above deflection calculation model: The relative deflection value of point 2# is: in, ; The relative deflection value of point 3# is: in, By analogy, the relative deflection value of point 6# is: in, like Figure 8 As shown in the figure, it is a modeling calculation diagram for the state where the hull is deflected but there is no ship heel angle. At this time, the deflection deformation baseline is established based on the deflection of both sides of 1# and 7#. Since the hull has no longitudinal heel angle, the absolute deflection value = ; The relative deflection value of point 2# is: ; in, ; The relative deflection value of point 3# is: ; in, By analogy, the relative deflection value of point 6# is: ; in, .

[0047] like Fig. 9 As shown, the deflection curves of the two columns of measuring cylinders 1 at each measuring position can be displayed on the loading computer 82 respectively. By combining the deflection curves of the two columns of measuring cylinders 1, the liquid level information and deflection liquid level deviation value of the adjacent columns of measuring cylinders 1 can be obtained, and a 3D dynamic display can be performed, such as Fig.10 , Fig.11 shown.

[0048] Example 2 A method for measuring the deflection of a semi-submersible barge comprises: S1, establishing a deflection measurement system as described in Example 1; S2, collecting liquid level data in each measuring tube 1, and transmitting the data to the liquid level measurement system 8 for deflection calculation and display.

[0049] The deflection measurement method of a semi-submersible barge of the present embodiment, by adopting the structure of the deflection measurement system of Example 1, can improve the system measurement accuracy and measurement sensitivity in hardware. At the same time, by adopting a method of measuring liquid level parameters, it is more sensitive than the pressure difference data measured in the prior art, and can further improve the measurement accuracy and sensitivity, thereby forming a high-precision and sensitive deflection measurement method based on liquid level data testing.

[0050] In an optional embodiment, the measuring cylinder 1 arranged on the loading computer 82 of the liquid level measurement system 8 corresponds to the display of the deflection curve and displays the 3D state deflection liquid level value.

[0051] In an optional embodiment, the deflection curves corresponding to the multiple rows of measuring cylinders 1 are displayed on the loading computer 82 of the liquid level measurement system 8, and the deflection level deviation value of the area between adjacent rows of measuring cylinders 1 in a 3D state is displayed.

[0052] Example 3 A semi-submersible barge comprises two tunnels 91 and a deflection measurement system of a semi-submersible barge according to Example 1; a plurality of measuring tubes 1 are arranged longitudinally in the tunnel 91, and the measuring tubes 1 in two adjacent rows correspond to each other one by one; the measuring tubes 1 are fixed on a ship 9 strong frame 92, and the plurality of measuring tubes 1 are arranged on a bottom plate near a longitudinal bulkhead 93 and / or a transverse bulkhead 94; the measuring tubes 1 in each row are numbered in sequence, and liquid level signals are collected respectively.

[0053] Take a semi-submersible barge as an example. Figure 5 As shown, the ship 9 is of longitudinal frame type, and two rows of nine measuring tubes 1 are arranged near the strong frame 92, the longitudinal bulkhead 93 and the transverse bulkhead 94, and are arranged at equal intervals on the bottom plate of the ship 9. Due to the connection of the strong frame 92, the deck and the bottom plate deform synchronously, so that the deflection measurement system arranged on the bottom plate can monitor the deflection deformation on the deck.

[0054] A semi-submersible barge of the present embodiment has a longer service life, higher measurement accuracy and sensitivity by adopting the above-mentioned deflection measurement system and deflection measurement method, and limits the measuring tube 1 to be set near the strong frame 92, the longitudinal bulkhead 93 and the transverse bulkhead 94, so that the measuring tube 1 is not easily affected by the deformation of the ship 9 itself, and has high measurement accuracy. The deflection deformation of the semi-submersible barge during transportation can be accurately obtained to ensure the safe transportation of the semi-submersible barge, and the arrangement of the deflection measurement system is facilitated by arranging the measuring tubes 1 in the two pipe lanes 91, thereby forming a semi-submersible barge with a deflection measurement system having point-surface combination characteristics.

[0055] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A deflection measurement system for a semi-submersible barge, characterized in that: It comprises a measuring cylinder (1); The measuring cylinder (1) is a steel cylindrical structural member, and the measuring cylinder (1) contains liquid; A plurality of the measuring cylinders (1) are arranged in a longitudinal arrangement, and adjacent measuring cylinders (1) are connected via a connecting pipe (2); The side wall of the measuring cylinder (1) above the liquid level is provided with a ventilating curved pipe (3) opening downward; The top of the measuring tube (1) is detachably connected to a magnetostrictive liquid level sensor (4), the magnetostrictive liquid level sensor (4) extends into the measuring tube (1), the magnetostrictive liquid level sensor (4) is communicatively connected to a liquid level measurement system (8), and the liquid level measurement system (8) uses a deflection calculation model based on a liquid level signal to calculate and display the deflection.

2. A deflection measurement system for a semi-submersible barge according to claim 1, characterized in that: The connecting pipe (2) is flange-connected to the measuring cylinder (1), and the connecting pipe (2) is provided with at least one bellows expansion joint (21).

3. A deflection measurement system for a semi-submersible barge according to claim 2, characterized in that: The measuring cylinder (1) comprises a lower cylinder section (11) and an upper cylinder section (12) connected by flanges, the height of the lower cylinder section (11) is smaller than the height of the upper cylinder section (12), and adjacent lower cylinder sections (11) are connected via the connecting pipe (2).

4. A deflection measurement system for a semi-submersible barge according to claim 1, characterized in that: The measuring cylinder (1) is provided with a replenishment and drainage branch pipe (5), the communication position between the replenishment and drainage branch pipe (5) and the measuring cylinder (1) is located below the connecting pipe (2), and the replenishment and drainage branch pipe (5) is provided with a first stop valve (51).

5. A deflection measurement system for a semi-submersible barge according to claim 4, characterized in that: The measuring cylinder (1) is connected to a visual inspection tube (6), the visual inspection tube (6) is a transparent material structural component, the visual inspection tube (6) and the measuring cylinder (1) are arranged at the same height, the communication position between the visual inspection tube (6) and the measuring cylinder (1) is located below the connecting tube (2), and a second stop valve (61) is provided between the visual inspection tube (6) and the measuring cylinder (1).

6. A deflection measurement system for a semi-submersible barge according to claim 1, characterized in that: A support (7) is provided at the bottom of the measuring cylinder (1).

7. A deflection measurement system for a semi-submersible barge according to any one of claims 1 to 6, characterized in that: The liquid level measurement system (8) comprises a liquid level measurement box (81) and a loading computer (82), wherein the liquid level measurement box (81) is arranged on the safety deck, and the loading computer (82) has built-in 3D dynamic posture software and a deflection calculation model, and is capable of displaying deflection numbers and curves; The deflection calculation model includes: Where: n is the serial number of the measuring cylinders along the arrangement direction; is the relative deflection value of the position of the measuring cylinder with serial number n; is the intermediate variable used to calculate the relative deflection value; is the absolute deflection value of the position of the measuring cylinder with serial number n; is the absolute deflection value of the position where the measuring cylinder with the largest serial number is located; is the trim angle of the ship; The center distance between the measuring cylinder with sequence number 1 and the measuring cylinder with the largest sequence number; is the center distance between the measuring cylinders numbered n and n+1.

8. A deflection measurement system for a semi-submersible barge according to claim 7, characterized in that: A plurality of the measuring cylinders (1) are arranged longitudinally, and at least two rows of the measuring cylinders (1) are respectively connected to the liquid level measurement system (8), so that a deflection monitoring area is formed between two adjacent rows of the measuring cylinders (1).

9. A method for measuring the deflection of a semi-submersible barge, characterized in that: include S1. Establish a deflection measurement system as described in claim 8; S2, collecting the liquid level data in each measuring cylinder (1), and transmitting it to the liquid level measurement system (8) for deflection calculation and display.

10. A semi-submersible barge, characterized in that: A deflection measuring system for a semi-submersible barge comprising two pipes (91) and the deflection measuring system of claim 8; A plurality of the measuring tubes (1) are arranged longitudinally in the tube lane (91), and the measuring tubes (1) in two adjacent rows correspond to each other one by one; The measuring tube (1) is fixed on a strong frame (92) of the ship (9) in a limited manner, and a plurality of the measuring tubes (1) are arranged on a bottom plate at a position close to a longitudinal bulkhead (93) and / or a transverse bulkhead (94); The measuring cylinders (1) in each row are numbered in sequence and liquid level signals are collected respectively.

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