Ship cargo tank swelling capacity measuring device and measuring method thereof

Abstract

The invention belongs to a ship cargo tank swelling capacity measuring device in the technical field of ships, and further relates to a ship cargo tank swelling capacity measuring method. The upper end of the fixing rod (6) is connected with the lower portion of a deck beam panel (D), the lower end of the fixing rod (6) is provided with a marking scale plate (9), the marking scale plate (9) is provided with a scale (8), the lower end of the fixing rod (6) is connected with a swing rod (4), one end of the swing rod (4) is provided with a swing rod pointer (7), and the other end of the swing rod (4) abuts against the ejector rod seat (A). According to the ship cargo tank swelling capacity measuring device, measurement of the ship cargo tank swelling capacity can be conveniently and reliably achieved, an important basis is provided for research on selection and structural form optimization of steel materials in a high-temperature area, and the steel materials suitable for the ship high-temperature environment can be selected in a targeted mode to manufacture the ship cargo tank.

Description

Technical Field

[0001] The present invention belongs to the technical field of ships, and more specifically, relates to a device for measuring the expansion of a ship cargo tank. The present invention also relates to a method for measuring the expansion of a ship cargo tank. Background Art

[0002] During the actual use of asphalt ships, the cargo tank will expand due to the influence of various external factors, and the simple detection equipment fails to fully consider these factors, resulting in a large deviation in the measurement data. The cargo tank may be affected by external factors such as temperature changes, pressure changes, and ship movement. These factors will cause the expansion of the cargo tank to change, and the simple detection equipment cannot accurately measure and compensate for these changes, thus affecting the accuracy of the measurement results. In summary, the existing technology has obvious technical defects in measuring the expansion of the liquid cargo tank of the asphalt ship.

[0003] In the prior art, there is a technology named "centering measuring device for front and rear flange mounting holes of marine diesel engine expansion joints" and the publication (announcement) number is "CN201535663U". The technology relates to a centering measuring device for front and rear flange mounting holes of marine diesel engine expansion joints. The device is composed of a base, a measuring rod and a movable ruler. An inner groove is opened on the base, and the length of the inner groove is greater than the distance between the flange and the hole on the marine diesel engine expansion joint. The measuring rod is vertically arranged at one end of the inner groove on the base. The measuring rod is a square rod with a scale. The bottom end of the measuring rod is movably fixed in the inner groove. A rectangular hole is arranged in the middle of the movable ruler. The movable ruler is sleeved on the measuring rod through the square hole, and the movable ruler is perpendicular to the measuring rod. The utility model solves the problem of installation misalignment of the front and rear flanges of the expansion joint, can accurately adjust the front and rear flanges of the expansion joint into place, and meets the installation requirements of the expansion joint. It has a simple structure, is easy to use, has strong reliability, and can meet the requirements of using expansion joints of different sizes.

[0004] However, this technology does not involve the technical problems and technical solutions of the present application. Summary of the invention

[0005] The technical problem to be solved by the present invention is: in view of the shortcomings of the prior art, a ship cargo tank expansion measurement device with a simple structure is provided, which can conveniently and reliably realize the measurement of the expansion volume of ship cargo tanks, and provide an important basis for studying the selection of steel materials and the optimization of structural forms in high-temperature areas, so that steel materials suitable for the high-temperature environment of ships can be selected in a targeted manner to manufacture cargo tanks, thereby improving the high-temperature resistance, strength and durability of cargo tanks, being able to better withstand the effects of high temperatures, reducing the risks of deformation and damage, and improving the overall performance and service life of asphalt tankers.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is:

[0007] The present invention discloses a device for measuring the expansion amount of a ship cargo tank, comprising a mandrel seat and a ranging pendulum assembly, wherein the mandrel seat is connected to a top plate of the cargo tank, and the ranging pendulum assembly comprises a fixed rod, wherein the upper end of the fixed rod is connected to the lower part of a deck cross beam panel, a marking scale plate is arranged at the lower end of the fixed rod, a scale is arranged on the marking scale plate, the lower end of the fixed rod is connected to a pendulum, a pendulum pointer is arranged at one end of the pendulum, and the other end of the pendulum abuts against the mandrel seat.

[0008] The push rod seat comprises a seat plate and a push rod, the push rod is perpendicular to the seat plate, the seat plate is connected to the top plate of the cargo tank, and the upper end of the push rod is a spherical structure.

[0009] A plurality of reinforcing plates are arranged between the seat plate and the top rod.

[0010] The swing rod is connected to the fixing rod through a bolt and nut assembly.

[0011] The pendulum pointer of the pendulum is aligned with the scale, the scale is arranged vertically, and the pendulum is arranged horizontally when it is in the initial position.

[0012] The cargo tank top plate is located below the deck beam panel.

[0013] The upper end of the fixing rod is connected to the lower part of the deck beam panel through a fixing piece connecting seat, and the fixing rod is arranged vertically.

[0014] When the ship cargo tank expands, the ship cargo tank is configured to exert force on the push rod seat, drive the push rod seat to move upward, and promote the swing rod of the ranging swing rod assembly to rotate relative to the fixed rod.

[0015] The actual expansion value H of the ship's cargo tank E is not less than the value h calculated by the following formula:

[0016] h = 1.1 × 10 -5 ×K×(temp-20)×Lmm

[0017] Where: h——heat expansion of the frame in mm;

[0018] K——Material coefficient (1 for steel and 0.8 for non-steel);

[0019] temp——operating temperature;

[0020] L - the span of the plate rack, which is taken as the maximum value in the length or width direction of the plate rack during calculation.

[0021] The present invention also relates to a method for measuring the expansion of a ship cargo tank with simple steps, which can conveniently and reliably realize the measurement of the expansion of a ship cargo tank, and provide an important basis for studying the selection of steel materials and the optimization of structural forms in high-temperature areas, so that steel materials suitable for the high-temperature environment of ships can be selected in a targeted manner to manufacture cargo tanks, improve the high-temperature resistance, strength and durability of cargo tanks, better withstand the impact of high temperatures, reduce the risk of deformation and damage, and improve the overall performance and service life of asphalt ships. The measurement steps of the ship cargo tank expansion measurement method are as follows:

[0022] S1. Make a mandrel seat and a ranging swing rod assembly, and respectively set the mandrel seat and the ranging swing rod assembly at multiple measuring points on the top plate of the cargo tank;

[0023] S2. Fix the mandrel seat to the top plate of the cargo tank to be measured, fix the fixed rod of the ranging swing rod assembly to the lower part of the deck beam panel, fasten the swing rod to the fixed rod with the bolt and nut assembly, place one end of the swing rod on the upper end of the mandrel of the mandrel seat, and align the swing rod pointer at the other end of the swing rod with the scale on the marking scale plate;

[0024] S3. Record the initial position data of the pendulum pointer and the ruler at all measuring points;

[0025] S4. When the cargo tank is heated, the mandrel seat moves upward as the cargo tank is heated and expanded, and the mandrel of the mandrel seat pushes the swing rod to rotate relative to the fixed rod; when the cargo tank is heated to the temperature of the maximum expansion, the swing rod swings relative to the fixed rod to the measurement completion position and remains unchanged;

[0026] S5. Stop heating the cargo tank, cool the cargo tank to room temperature, and record the position data of the pendulum pointer and the scale at each measuring point. The position change data of the pendulum pointer and the scale are the expansion amounts of each measuring point of the cargo tank.

[0027] The technical solution of the present invention is adopted, and the working principle and beneficial effects are as follows:

[0028] The device for measuring the expansion of a ship cargo tank described in the present invention is structured by separately making a push rod seat and a ranging pendulum assembly, the push rod seat being connected to a top plate of the cargo tank, and when the ship cargo tank expands, the push rod seat is synchronously displaced along with the position of the top plate of the cargo tank, and the ranging pendulum assembly comprises a fixed rod, the upper end of which is connected to the lower part of a deck cross beam panel, the position of the fixed rod is fixed and will not change, a marking scale plate is provided at the lower end of the fixed rod, a scale is provided on the marking scale plate, the lower end of the fixed rod is connected to a pendulum, and when the pendulum is in an initial state, a pendulum pointer at one end of the pendulum is aligned with the scale, the pendulum pointer and the scale are in the initial position, and the other end of the pendulum is against the push rod seat, and the push rod seat and the ranging pendulum assembly need to cooperate to measure the expansion. Specifically, according to the actual needs of different ship cargo tanks, multiple expansion measurement points can be selected, and different expansion measurement points are respectively arranged with ship cargo tank expansion measurement devices, each ship cargo tank expansion measurement device respectively includes a corresponding top rod seat and a ranging pendulum assembly; the top rod seat needs to be fixed on the top plate of the cargo tank to be measured, the top rod seat and the cargo tank top plate are integrated, the expansion of the ship cargo tank is reflected in the upward movement distance of the top rod seat, the fixed rod of the ranging pendulum assembly is fixed to the lower part of the deck beam panel, the fixed rod structure is fixed, the pendulum is fastened to the fixed rod with a bolt and nut assembly, one end of the pendulum fits against the upper end of the top rod of the top rod seat, and the pendulum pointer at the other end of the pendulum is aligned with the scale on the marking scale plate; the pendulum and the fixed rod are fixed by the bolt and nut assembly, and when the pendulum is not subjected to force, the pendulum and the fixed rod are in the initial position, at this time, the initial position data is displayed between the pendulum pointer and the scale of all measuring points; then the ship cargo tank is heated, and as the ship cargo tank is heated and expanded, the push rod seat moves up synchronously with the heat expansion of the ship cargo tank, and the push rod of the push rod seat pushes the pendulum to rotate relative to the fixed rod; when the ship cargo tank E is heated to the temperature of the maximum expansion, the heating temperature of the asphalt cargo tank is selected between 170℃-190℃, the pendulum swings to the measurement completion position relative to the fixed rod, and the relative state of the pendulum and the scale remains unchanged; the heating of the ship cargo tank is stopped, and the ship cargo tank is cooled to room temperature, and the position data of the pendulum pointer and the scale of each measuring point are recorded, and the change value of the position of the pendulum pointer and the scale relative to the initial position data is the expansion of each measuring point of the ship cargo tank, so that the expansion data of different measuring points of the ship cargo tank can be accurately obtained. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The following is a brief description of the contents and symbols in the drawings of this specification:

[0030] Figure 1 It is a structural schematic diagram of the mandrel seat of the ship cargo tank expansion measurement device of the present invention;

[0031] Figure 2 It is a schematic diagram of the top view of the structure of the mandrel seat of the ship cargo tank expansion measurement device of the present invention;

[0032] Figure 3 It is a structural schematic diagram of the ranging swing rod assembly of the ship cargo tank expansion measurement device according to the present invention;

[0033] Figure 4 This is a schematic diagram of the structure of the ship cargo tank expansion measurement device of the present invention when in use;

[0034] The marks in the attached drawings are respectively: A, top rod seat; B, ranging pendulum assembly; C, cargo tank top plate; D, deck beam panel; E, ship cargo tank; 1, seat plate; 2, reinforcement plate; 3, top rod; 4, pendulum; 5, bolt and nut assembly; 6, fixing rod; 7, pendulum pointer; 8, ruler; 9, marking ruler plate; 10, fixing part connecting seat. DETAILED DESCRIPTION

[0035] The following is a further detailed description of the specific implementation of the present invention, such as the shape, structure, mutual position and connection relationship between the various components involved, the function and working principle of each part, etc., through the description of the embodiments with reference to the accompanying drawings:

[0036] As attached Figure 1 -Attached Figure 4As shown, the present invention is a device for measuring the expansion of a cargo tank on a ship, comprising a mandrel seat A and a ranging swing arm assembly B. The mandrel seat A is connected to the top plate C of the cargo tank. The ranging swing arm assembly B comprises a fixing rod 6, the upper end of which is connected to the lower part of the deck beam panel D, a marking scale plate 9 is arranged at the lower end of the fixing rod 6, a scale 8 is arranged on the marking scale plate 9, the lower end of the fixing rod 6 is connected to a swing arm 4, a swing arm pointer 7 is arranged at one end of the swing arm 4, and the other end of the swing arm 4 abuts against the mandrel seat A. The above structure proposes an improved technical solution to address the deficiencies in the prior art. When setting up the structure, a push rod seat A and a ranging pendulum assembly B are made respectively. The push rod seat A is connected to the cargo tank top plate C. When the ship cargo tank expands, the push rod seat A moves synchronously with the position of the cargo tank top plate C. The ranging pendulum assembly B includes a fixed rod 6. The upper end of the fixed rod 6 is connected to the lower part of the deck beam panel D. The position of the fixed rod 6 is fixed and will not change. A marking scale plate 9 is set at the lower end of the fixed rod 6, and a scale 8 is set on the marking scale plate 9. The lower end of the fixed rod 6 is connected to the pendulum 4. When the pendulum is in the initial state, the pendulum pointer 7 at one end of the pendulum 4 is aligned with the scale 8, the pendulum pointer 7 and the scale 8 are in the initial position, and the other end of the pendulum 4 is against the push rod seat A. When measuring the expansion amount, the push rod seat A and the ranging pendulum assembly B need to cooperate to complete it.Specifically, according to the actual needs of different ship cargo tanks E, multiple expansion measurement points can be selected, and ship cargo tank expansion measurement devices are arranged at different expansion measurement points, each ship cargo tank expansion measurement device includes a corresponding top rod seat A and a ranging pendulum assembly B; the top rod seat A needs to be fixed on the top plate C of the cargo tank to be measured, the top rod seat A and the cargo tank top plate C are integrated, the expansion of the ship cargo tank E is reflected in the upward movement distance of the top rod seat A, the fixing rod 6 of the ranging pendulum assembly B is fixed to the lower part of the deck beam panel D, the fixing rod structure is fixed, and the pendulum 4 is fastened to the fixing rod 6 by the bolt and nut assembly 5, one end of the pendulum 4 is fitted and rested on the upper end of the top rod 3 of the top rod seat A, and the pendulum pointer 7 at the other end of the pendulum 4 is aligned with the scale 8 on the marking scale plate 9; the pendulum and the fixed rod are fixed by the bolt and nut assembly, and when the pendulum 4 is not subjected to force, the pendulum 4 and the fixed rod 6 are in the initial The initial position is displayed between the pendulum pointer 7 and the scale 8 of all measuring points. Then, the ship cargo tank E is heated. As the ship cargo tank E expands due to heat, the push rod seat A moves up synchronously with the expansion of the ship cargo tank E due to heat, and the push rod 3 of the push rod seat A pushes the pendulum rod 4 to rotate relative to the fixed rod 6. When the ship cargo tank E is heated to the temperature of the maximum expansion, the heating temperature of the asphalt cargo tank is selected between 170°C and 190°C, and the pendulum rod 4 swings to the measurement completion position relative to the fixed rod 6, and the relative state of the pendulum rod 4 and the scale 8 remains unchanged. The heating of the ship cargo tank E is stopped, and the ship cargo tank E is cooled to room temperature. The position data of the pendulum pointer 7 and the scale 8 of each measuring point are recorded. The change value of the position of the pendulum pointer 4 and the scale 8 relative to the initial position data is the expansion of each measuring point of the ship cargo tank E. In this way, the expansion data of different measuring points of the ship cargo tank E can be accurately obtained. The device for measuring the expansion of a ship cargo tank described in the present invention has a simple structure and can conveniently and reliably realize the measurement of the expansion of a ship cargo tank, providing an important basis for studying the selection of steel materials and the optimization of structural forms in high-temperature areas, so that steel materials suitable for the high-temperature environment of ships can be selected in a targeted manner to manufacture ship cargo tanks, thereby improving the high-temperature resistance, strength and durability of ship cargo tanks, being able to better withstand the effects of high temperatures, reducing the risks of deformation and damage, and improving the overall performance and service life of asphalt tankers.

[0037] The mandrel seat A comprises a seat plate 1 and a mandrel 3, the mandrel 3 is perpendicular to the seat plate 1, the seat plate 1 is connected to the tank top plate C, and the upper end of the mandrel 3 is a spherical structure. In the above structure, the seat plate 1 is arranged horizontally behind the tank top plate, and the mandrel 3 is vertically, and the upper end of the mandrel 3 is a spherical structure, which ensures that the upper end of the mandrel 3 reliably contacts the swing rod 4 and accurately pushes the swing rod 4 to move.

[0038] Multiple reinforcing plates 2 are arranged between the seat plate 1 and the top rod 3. In the above structure, multiple reinforcing plates 2 are arranged along the top rod 3 at intervals, and are connected to the seat plate 1 at the same time, so as to improve the overall strength and avoid deformation. The swing rod 4 is connected to the fixing rod 6 through the bolt and nut assembly 5. The bolt and nut assembly 5 can reliably realize the connection between the swing rod and the fixing rod, ensuring that the swing rod will not swing relative to the fixing plate when it is not subjected to force, but can swing after being subjected to force, and maintain the state after the external force disappears after the swing.

[0039] The pendulum pointer 7 of the pendulum 4 is aligned with the scale 8, the scale 8 is arranged vertically, and the pendulum 4 is set to a horizontal arrangement structure when it is in the initial position. The cargo tank top plate C is located below the deck beam panel D. The upper end of the fixing rod 6 is connected to the bottom of the deck beam panel D through the fixing member connecting seat 10, and the fixing rod 6 is arranged vertically. In the above structure, the cargo tank top plate C is used to arrange the top rod seat A, and the bottom of the deck beam panel D is used to connect the fixing rod 6. The expansion amount of the ship cargo tank E is measured by the top rod seat A and the ranging pendulum assembly B.

[0040] When the ship cargo tank E expands, the ship cargo tank E is configured to exert force on the mandrel seat A, drive the mandrel seat A to move upward, and push the swing rod 4 of the ranging swing rod assembly B to rotate relative to the fixed rod 6. In the above structure, the expansion amount of the ship cargo tank E is converted into the relative position change amount of the swing rod pointer 7 and the scale 8. The scale 8 is arranged vertically, so that the expansion amount of the ship cargo tank E can be measured intuitively and accurately, and the expansion amount of multiple measuring points can be measured.

[0041] The actual expansion value H of the ship cargo tank E is not less than the value h calculated by the following formula:

[0042] h = 1.1 × 10 -5 ×K×(temp-20)×Lmm

[0043] In the formula: h——heat expansion of the frame in mm;

[0044] K——Material coefficient (1 for steel and 0.8 for non-steel);

[0045] temp——operating temperature,

[0046] As a specific example, for example, the operating temperature of the asphalt ship cargo tank is 180°C.

[0047] The measuring points in other areas are selected according to the actual working temperature, that is, different working temperatures can be selected for different materials;

[0048] L is the span of the plate rack. When calculating, the value is the maximum value in the length or width direction of the plate rack in mm.

[0049] If it is not less than , it means that the expansion volume meets the requirements and the material meets the requirements for ship cargo tank manufacturing. If it is less than , it means that the expansion volume meets the requirements and the material meets the requirements for ship cargo tank manufacturing. In this way, the material for ship cargo tank manufacturing can be judged conveniently, quickly and accurately.

[0050] The present invention also relates to a method for measuring the expansion of a ship cargo tank with simple steps, which can conveniently and reliably realize the measurement of the expansion of a ship cargo tank, and provide an important basis for studying the selection of steel materials and the optimization of structural forms in high-temperature areas, so that steel materials suitable for the high-temperature environment of ships can be selected in a targeted manner to manufacture cargo tanks, improve the high-temperature resistance, strength and durability of cargo tanks, better withstand the impact of high temperatures, reduce the risk of deformation and damage, and improve the overall performance and service life of asphalt ships. The measurement steps of the ship cargo tank expansion measurement method are as follows:

[0051] S1. Make a mandrel seat A and a ranging swing arm assembly B, and respectively set the mandrel seat A and the ranging swing arm assembly B at multiple measuring points on the top plate C of the cargo tank;

[0052] S2. Fix the mandrel seat A to the top plate C of the cargo tank to be measured, fix the fixing rod 6 of the ranging swing rod assembly B to the lower part of the deck beam panel D, fasten the swing rod 4 to the fixing rod 6 with the bolt and nut assembly 5, and place one end of the swing rod 4 on the upper end of the mandrel 3 of the mandrel seat A, and align the swing rod pointer 7 at the other end of the swing rod 4 with the scale 8 on the marking scale plate 9;

[0053] S3 records the initial position data of the pendulum pointer 7 and the scale 8 at all measuring points;

[0054] S4. The ship cargo tank E is heated, and the mandrel seat A moves upward as the ship cargo tank E expands due to heat, and the mandrel 3 of the mandrel seat A pushes the swing rod 4 to rotate relative to the fixed rod 6; the ship cargo tank E is heated to a temperature at which the expansion amount is maximum, and the heating temperature is selected between 170°C and 190°C, and the swing rod 4 swings relative to the fixed rod 6 to a measurement completion position, and the state remains unchanged;

[0055] S5. Stop heating the cargo tank E, cool the cargo tank E to room temperature, and record the position data of the pendulum pointer 7 and the scale 8 at each measuring point. The position change data of the pendulum pointer 4 and the scale 8 are the expansion amounts of the cargo tank E at each measuring point.

[0056] The ship cargo tank expansion measuring device described in the present invention, on the one hand, provides a practical solution for the technical research of key parts of asphalt ships and actual measurement in high temperature areas. Through this solution, the changes in key parts of asphalt ships under different working conditions, especially the actual conditions in high temperature areas, can be understood more accurately. This helps to discover potential problems in a timely manner and provide strong guarantees for the safe operation of ships. On the other hand, it provides an important basis for studying the selection of steel materials and the optimization of structural forms in high temperature areas. After mastering the detailed data of the high temperature area, it is possible to select steel materials that are more suitable for high temperature environments in a targeted manner to improve the high temperature resistance, strength and durability of the steel. At the same time, the structural form is optimized according to the actual measurement results to make the structure more reasonable, better able to withstand the impact of high temperature, and reduce the risk of deformation and damage. This can not only improve the overall performance and service life of asphalt ships, but also provide useful reference and reference for the technical development of related fields. The technical research of key parts of asphalt ships and actual measurement in high temperature areas provide a solution, which provides a basis for studying the selection of steel materials and the optimization of structural forms in high temperature areas.

[0057] The ship cargo tank expansion measuring device described in the present invention can obtain the shape plastic deformation of the cargo tank when it is subjected to thermal stress in the high temperature area by an indirect method, that is, the expansion data of the ship cargo tank is converted into the position change data of the pendulum pointer and the scale. The key points are reflected in the following four aspects: First, accurately measure the shape plastic deformation of the cargo tank when it is subjected to thermal stress in the high temperature area: During the operation of the asphalt ship, the thermal stress of the cargo tank in the high temperature area will cause the shape plastic deformation. Through innovative measurement methods, this deformation can be accurately captured, providing a reliable data basis for subsequent analysis and optimization. Second, the displacement data of the measuring device is converted into the expansion of the cargo tank by an indirect method: The application of the indirect method is one of the core innovations of this application. By cleverly converting the displacement data of the measuring device into the expansion of the cargo tank, the changes of the cargo tank in a high temperature environment can be more accurately reflected. This conversion method needs to be verified by strict mathematical models and algorithms to ensure the accuracy and reliability of the data. Third, overcome the influence of high temperature on the measuring instrument: The high temperature environment poses a huge challenge to the normal operation of the measuring instrument. One of the key points of this application is to develop a measuring instrument that can work stably in a high temperature environment, and overcome the problems of aging of electronic components and decreased accuracy caused by high temperature. This requires the use of high-temperature resistant materials, optimization of instrument structure design, and effective heat dissipation measures to ensure that the measuring instrument can maintain good performance in extreme environments. 4. Ensure that the instrument's measurement data is not affected by later changes in the environment: In order to ensure the long-term validity of the measurement data, this application focuses on ensuring that the instrument's measurement data is no longer affected by later changes in the environment. This means that the measuring instrument must not only be accurate and reliable during the initial measurement, but also remain stable during long-term use, and not be disturbed by factors such as temperature fluctuations, humidity changes, and vibrations. By adopting advanced sensor technology, data processing algorithms and protective measures, the impact of environmental factors on the measurement data can be minimized, providing a continuous and reliable basis for the safe operation and maintenance of asphalt tankers.

[0058] The device for measuring the expansion of a ship cargo tank described in the present invention is structured by separately making a push rod seat A and a ranging pendulum assembly B. The push rod seat A is connected to a cargo tank top plate C. When the ship cargo tank expands, the push rod seat A moves synchronously with the position of the cargo tank top plate C. The ranging pendulum assembly B comprises a fixed rod 6. The upper end of the fixed rod 6 is connected to the lower part of the deck beam panel D. The position of the fixed rod 6 is fixed and will not change. A marking scale plate 9 is provided at the lower end of the fixed rod 6. A scale 8 is provided on the marking scale plate 9. The lower end of the fixed rod 6 is connected to the pendulum 4. When the pendulum is in an initial state, a pendulum pointer 7 at one end of the pendulum 4 is aligned with the scale 8. The pendulum pointer 7 and the scale 8 are in the initial position. The other end of the pendulum 4 is against the push rod seat A. Therefore, the push rod seat A and the ranging pendulum assembly B need to cooperate to complete the expansion measurement. Specifically, according to the actual needs of different ship cargo tanks E, multiple expansion measurement points can be selected, and different expansion measurement points are respectively arranged with ship cargo tank expansion measurement devices, each ship cargo tank expansion measurement device respectively includes a corresponding top rod seat A and a ranging pendulum assembly B; the top rod seat A needs to be fixed on the cargo tank top plate C to be measured, the top rod seat A and the cargo tank top plate C are integrated, the expansion of the ship cargo tank E is reflected in the upward movement distance of the top rod seat A, the fixing rod 6 of the ranging pendulum assembly B is fixed to the lower part of the deck beam panel D, the fixing rod structure is fixed, and the pendulum 4 is fastened to the fixing rod 6 by the bolt and nut assembly 5, one end of the pendulum 4 is fitted and rested on the upper end of the top rod 3 of the top rod seat A, and the pendulum pointer 7 at the other end of the pendulum 4 is aligned with the scale 8 on the marking scale plate 9; the pendulum and the fixed rod are fixed by the bolt and nut assembly, and when the pendulum 4 is not subjected to force, the pendulum 4 and the fixed rod 6 are at At the initial position, the initial position data is displayed between the pendulum pointer 7 and the scale 8 of all measuring points; then the ship cargo tank E is heated, and as the ship cargo tank E expands due to the heat, the push rod seat A moves up synchronously with the heat expansion of the ship cargo tank E, and the push rod 3 of the push rod seat A pushes the pendulum rod 4 to rotate relative to the fixed rod 6; when the ship cargo tank E is heated to the temperature of the maximum expansion, the heating temperature of the asphalt cargo tank is selected between 170℃-190℃, the pendulum rod 4 swings to the measurement completion position relative to the fixed rod 6, and the relative maintenance state of the pendulum rod 4 and the scale 8 remains unchanged; the heating of the ship cargo tank E is stopped, and the ship cargo tank E is cooled to room temperature, and the position data of the pendulum pointer 7 and the scale 8 of each measuring point are recorded, and the change value of the position of the pendulum pointer 4 and the scale 8 relative to the initial position data is the expansion of each measuring point of the ship cargo tank E, and the expansion data of different measuring points of the ship cargo tank E are accurately obtained.

[0059] The present invention is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A device for measuring the expansion of a ship cargo tank, characterized in that: The invention comprises a top rod seat (A) and a ranging swing arm assembly (B). The top rod seat (A) is connected to a cargo tank top plate (C). The ranging swing arm assembly (B) comprises a fixing rod (6). The upper end of the fixing rod (6) is connected to the lower part of a deck beam panel (D). A marking scale plate (9) is arranged at the lower end of the fixing rod (6). A scale (8) is arranged on the marking scale plate (9). The lower end of the fixing rod (6) is connected to a swing arm (4). A swing arm pointer (7) is arranged at one end of the swing arm (4). The other end of the swing arm (4) abuts against the top rod seat (A).

2. The device for measuring the expansion of a ship cargo tank according to claim 1, characterized in that: The push rod seat (A) comprises a seat plate (1) and a push rod (3), wherein the push rod (3) is perpendicular to the seat plate (1), the seat plate (1) is connected to the top plate (C) of the cargo tank, and the upper end of the push rod (3) is a spherical structure.

3. The device for measuring the expansion of a ship cargo tank according to claim 2, characterized in that: A plurality of reinforcing plates (2) are arranged between the seat plate (1) and the top rod (3).

4. The device for measuring the expansion of a ship cargo tank according to claim 1 or 2, characterized in that: The swing rod (4) is connected to the fixing rod (6) via a bolt and nut assembly (5).

5. The device for measuring the expansion of a ship cargo tank according to claim 4, characterized in that: The pendulum pointer (7) of the pendulum (4) is aligned with the scale (8), the scale (8) is arranged vertically, and the pendulum (4) is arranged horizontally when it is in the initial position.

6. The device for measuring the expansion of a ship cargo tank according to claim 1 or 2, characterized in that: The cargo tank top plate (C) is located below the deck beam panel (D).

7. The device for measuring the expansion of a ship cargo tank according to claim 1 or 2, characterized in that: The upper end of the fixing rod (6) is connected to the lower part of the deck beam panel (D) through a fixing member connecting seat (10), and the fixing rod (6) is arranged vertically.

8. The device for measuring the expansion of a ship cargo tank according to claim 1 or 2, characterized in that: When the ship cargo tank (E) expands, the ship cargo tank (E) is configured to be a structure capable of exerting force on the top rod seat (A), driving the top rod seat (A) to move upward, and pushing the swing rod (4) of the ranging swing rod assembly (B) to rotate relative to the fixed rod (6).

9. The device for measuring the expansion of a ship cargo tank according to claim 8, characterized in that: The actual expansion value H of the ship cargo tank (E) is not less than the value h calculated by the following formula: h=1.1×10 -5 ×K×(temp-20)×Lmm Where: h——heat expansion of the frame in mm; K——material coefficient; temp——operating temperature; L - the span of the plate rack, which is taken as the maximum value in the length or width direction of the plate rack during calculation.

10. A method for measuring the expansion of a ship cargo tank, characterized in that: The measurement steps of the method for measuring the expansion of a ship cargo tank are as follows: S1. Make a mandrel seat (A) and a ranging swing arm assembly (B), and respectively set the mandrel seat (A) and the ranging swing arm assembly (B) at multiple measuring points of the tank top plate (C); S2. Fix the mandrel seat (A) on the top plate (C) of the cargo tank to be measured, fix the fixing rod (6) of the ranging swing rod assembly (B) on the lower part of the deck beam panel (D), fasten the swing rod (4) to the fixing rod (6) with the bolt and nut assembly (5), and place one end of the swing rod (4) on the upper end of the mandrel (3) of the mandrel seat (A), and align the swing rod pointer (7) at the other end of the swing rod (4) with the scale (8) on the marking scale plate (9); S3. Record the initial position data of the pendulum pointer (7) and the scale (8) at all measurement points; S4. The ship cargo tank (E) is heated, and the push rod seat (A) moves upward as the ship cargo tank (E) expands due to heat, and the push rod (3) of the push rod seat (A) pushes the swing rod (4) to rotate relative to the fixed rod (6); when the ship cargo tank (E) is heated to a temperature at which the expansion amount is maximum, the swing rod (4) swings relative to the fixed rod (6) to a measurement completion position and maintains the state unchanged; S5. The heating of the ship cargo tank (E) is stopped, and the ship cargo tank (E) is cooled to room temperature. The position data of the pendulum pointer (7) and the scale (8) at each measuring point are recorded. The position change data of the pendulum pointer (4) and the scale (8) are the expansion amounts of each measuring point of the ship cargo tank (E).

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