Size testing device for floating disc gap sealing strip

Abstract

The invention relates to the technical field of floating roof and floating disc storage tank gap sealing, and particularly discloses a floating disc gap sealing strip size testing device which comprises a simulation inner wall, the simulation inner wall is used for simulating a floating disc, and the simulation inner wall is provided with an installation base used for being connected with a sealing strip. The mounting base is connected with a simulation outer wall through a telescopic adjusting mechanism, and the simulation outer wall is used for simulating the outer wall of the storage tank to abut against the lower portion of the limiting sealing strip. The device can determine the optimal size of the sealing strip by simulating and adjusting the size of the annular space of the storage tank.

Description

Technical Field

[0001] The invention relates to the technical field of gap sealing of floating roof and floating disk storage tanks, in particular to a device for testing the size of sealing strips of gaps of floating disks. Background Art

[0002] Due to the high content of volatile components in petroleum and its products, the untight sealing of oil storage tanks leads to the unorganized emission of volatile organic compounds (VOCs), which will not only cause a large amount of economic losses and energy waste, but also pollute the atmospheric environment and increase safety risks. The sealing device of the oil storage tank is aged and damaged during long-term use, resulting in large evaporation losses of oil products, increased risks of tank operation, and easy to cause major safety accidents such as oil fires. Therefore, when sealing devices such as sealing strips seal the tank wall and the floating plate, they should have appropriate sealing area height, sealing pressure and fatigue resistance. There is no simulation device that is reasonably designed to simulate the sealing of the sealing strip on the tank wall. It is urgent to develop a simulation device for the inherent safety improvement of the tank seal to ensure the safe operation of the floating roof tank. The "floating plate gap sealing strip size test device" is a device that can adjust the size of the annular space of the tank by simulation and determine the optimal size of the sealing strip, providing a reference for the development of new sealing devices. Summary of the invention

[0003] The object of the present invention is to provide a device for testing the size of a sealing strip of a floating plate gap, which can determine the optimal size of the sealing strip by simulating and adjusting the size of the annular space of a storage tank.

[0004] The purpose of the present invention can be achieved through the following technical solutions:

[0005] A device for testing the size of a floating plate gap sealing strip comprises a simulated inner wall, the simulated inner wall is used to simulate a floating plate, a mounting seat for connecting the sealing strip is arranged on the simulated inner wall, the mounting seat is connected to a simulated outer wall through a telescopic adjustment mechanism, and the simulated outer wall is used to simulate the outer wall of a storage tank to press against the lower part of the limiting sealing strip.

[0006] In a further solution, the mounting method of the mounting seat and the sealing strip is the same as the mounting method of the floating plate and the sealing strip.

[0007] In a further solution, the mounting seat includes a flat steel having a plurality of mounting holes evenly distributed thereon, and the distance from the upper surface of the mounting plate to the upper surface of the simulated inner wall is greater than ten centimeters.

[0008] In a further solution, the telescopic adjustment mechanism includes a threaded rod and an adjustable nut, one end of the threaded rod is connected to the simulated outer wall, and the other end is connected to the simulated inner wall through the adjustable nut.

[0009] In a further solution, the telescopic adjustment mechanism includes an electric telescopic rod, one end of which is connected to the simulated outer wall, and the other end of which is connected to the simulated inner wall.

[0010] In a further solution, the simulated inner wall includes at least two support columns, an inner wall plate, an upper crossbeam and a lower crossbeam, and the upper crossbeam, the lower crossbeam and the two support columns are respectively connected to the upper, lower, left and right ends of the inner wall plate.

[0011] In a further solution, the inner wall plate includes an arc-shaped bent plate, the support column includes a rectangular tube, the upper cross beam includes an upper bent tube, and the lower cross beam includes a lower bent tube.

[0012] In a further embodiment, the simulated outer wall comprises an outer wall panel.

[0013] In a further embodiment, the outer wall panel comprises an arc-shaped bent plate.

[0014] In a further solution, a pressure sensor is connected to the simulated outer wall, and the pressure sensor is used to measure the pressure generated on the simulated outer wall when the sealing strip is bent.

[0015] Beneficial effects of the present invention:

[0016] The present invention simulates the installation of the sealing strip between the existing floating plate and the tank wall by designing the above-mentioned test device, which can be used to measure the contact pressure of the sealing strip during installation, and can also be used for fatigue testing and life strength testing of the sealing strip, so that construction personnel can select high-quality sealing strips according to the size of the floating plate, or select sealing strips with a long service life, which can be used to predict the life of related sealing strips and improve their safety in use.

[0017] By adding an electric push rod, the gap between the inner and outer wall panels can be automatically adjusted. The gap adjustment range is 0cm~30cm, with an accuracy of ±3mm. The annular space of the tank is generally 25cm. This device can more accurately simulate the annular space of the tank after the tank body is deformed due to foundation settlement.

[0018] The device can simulate and produce the installation part at a ratio of 1:1, and can also simulate and produce the partial installation part, and the simulation is more accurate.

[0019] The pressure sensor can be used to measure the point with maximum stress between the sealing strip and the tank wall so as to select the appropriate pre-tightening installation position. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 is a schematic diagram of a device for testing the size of a floating plate gap sealing strip in an embodiment of the present invention;

[0022] Figure 2 Schematic diagram of the sealing strip in sealing state in the embodiment of the present invention;

[0023] Figure 3 It is a front view schematic diagram of a device for testing the size of a sealing strip of a floating plate gap in the present invention;

[0024] Figure 4 This is a schematic diagram of the installation test of the sealing strip in an embodiment of the present invention;

[0025] Figure 5 is a schematic diagram for testing the sealing height of a sealing strip as it changes with the sealing gap in an embodiment of the present invention;

[0026] Figure 6 is a schematic diagram of the change of the contact point pressure of the testing sealing strip with the sealing gap in an embodiment of the present invention;

[0027] In the figure: 0, sealing strip; 1, simulated inner wall; 11, support column; 12, inner wall plate; 13, upper crossbeam; 14, lower crossbeam; 2, mounting seat; 3, retractable adjustment mechanism; 4, simulated outer wall. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] like Figure 1 As shown, a device for testing the size of a floating plate gap sealing strip comprises a simulated inner wall 1, the simulated inner wall 1 is used to simulate a floating plate, a mounting seat 2 for connecting a sealing strip 0 is arranged on the simulated inner wall 1, the mounting seat 2 is connected to a simulated outer wall 4 through a retractable adjustment mechanism 3, and the simulated outer wall 4 is used to simulate the outer wall of a storage tank to press against the lower part of the limiting sealing strip 0.

[0030] Its working principle or implementation method is: the size of the annular space is different, and the contact point and the maximum pressure point of the sealing strip 0 with the simulated outer wall 4 in this space are also different, such as Figure 4 As shown, the shape of the sealing strip 0 is shown in the figure, and an arc-shaped sealing strip is adopted. Generally, the existing sealing strip is also an arc-shaped sealing strip. The height from the contact point of the arc surface with the simulated outer wall 4 to the bottom position of the mounting seat at the initial gap is h1. As the gap decreases, the maximum sealing pressure of the contact point is expected to be located at the simulated outer wall 4 at a distance of h2 from the bottom position of the mounting seat. Then, the actual height of h2 is verified by the above-mentioned device, and then the optimal size of the sealing strip 0 can be determined to save steel and reduce costs. At the same time, it can also provide a reference for the on-site installation of the new sealing strip 0. Compared with the traditional bladder-type soft seal, the results can be obtained fastest to achieve the purpose of energy saving and consumption reduction. Referring to the existing storage tank annular space size of 250mm, it can be concluded that when the sealing strip adopts a liquid-immersion seal, the point with the maximum stress between the sealing strip and the tank wall invades 5cm below the liquid surface. The test principle diagram and experimental data of the optimal size of the sealing strip 0 are attached. Figure 4 , 5 6. The present invention can theoretically simulate an annular space size range of 0mm-300mm, but in actual production, the annular space size of the storage tank is about 250mm. Due to the deformation of the tank body caused by foundation settlement, the size of the annular space will also change, and the width will not change much. In addition, the width is artificially selected for redundancy in the later stage. Based on the existing conditions of the laboratory, the simulated annular space size range can be selected to be 200mm-300mm.

[0031] Those skilled in the art should understand that the optimal size is obtained based on the sealing strip being at the maximum pressure point on the simulated inner wall 1 of the tank, which is reflected by the pressure sensor; when the tank stores oil, the sealing effect is best when the liquid level in the tank is exactly on the same horizontal line as the maximum pressure point of the sealing strip, and the optimal size of the sealing strip is derived from this.

[0032] According to the above working principle, some preferred implementation structures or methods are provided, and the installation method of the mounting seat 2 and the sealing strip 0 is the same as the installation method of the floating plate and the sealing strip 0. In this way, the sealing strip installation can be partially simulated, and the sealing strip installation can also be simulated as a whole, which is convenient for installation and provides safety for the sealing strip test.

[0033] The mounting base 2 includes a flat steel plate, on which a plurality of mounting holes 21 are evenly arranged. The mounting holes 21 are used to adjust the mounting position of the test sealing strip. The distance between the upper surface of the mounting plate and the upper surface of the simulated inner wall 1 is greater than ten centimeters. This ensures that one end of the sealing strip is in full mounting contact with the simulated inner wall 1. It can also provide a reserved installation space for a new sealing strip to be developed.

[0034] The telescopic adjustment mechanism 3 includes a threaded rod and an adjustable nut, one end of the threaded rod is connected to the simulated outer wall 4, and the other end is connected to the simulated inner wall 1 through the adjustable nut. Through thread adjustment, the gap value between the simulated outer wall and the simulated inner wall can be accurately simulated.

[0035] The telescopic adjustment mechanism 3 includes an electric telescopic rod, one end of which is connected to the simulated outer wall 4, and the other end is connected to the simulated inner wall 1. In this way, the gap value between the two can be automatically adjusted. The telescopic adjustment mechanism 3 can also be replaced with a cylinder, which drives the simulated outer wall to oscillate back and forth in a small range, which is used to measure the fatigue strength of the sealing ring.

[0036] The simulated inner wall 1 comprises at least two supporting columns 11, an inner wall plate 12, an upper crossbeam 13 and a lower crossbeam 14. The upper crossbeam 13, the lower crossbeam 14 and the two supporting columns 11 are respectively connected to the upper, lower, left and right ends of the inner wall plate 12. This structure is simple and easy to manufacture.

[0037] The inner wall plate 12 includes an arc-shaped curved plate, the support column 11 includes a rectangular tube, the upper cross beam 13 includes an upper curved tube, and the lower cross beam 14 includes a lower curved tube. This can be similar to the appearance of a storage tank, making the simulation result more accurate.

[0038] The simulated outer wall 4 includes an outer wall plate. The outer wall plate includes an arc-shaped curved plate. The arc-shaped plate structure is simple and easy to manufacture, and the simulated scene is more consistent with the inner wall of the storage tank.

[0039] A pressure sensor is connected to the simulated outer wall 4, and the pressure sensor is used to measure the pressure generated by the sealing strip 0 on the simulated outer wall 4 when it is bent. By measuring the pressure value, the numerical record can be read intuitively.

[0040] The hole on the upper cross beam 13 is used for installing the secondary sealing device accessories. The complete sealing device includes a primary seal and a secondary seal, which can be ignored here.

[0041] like Figure 2 The sealing strip 0 shown is installed on the mounting seat 2 and is sealed between the simulated inner wall 1 and the simulated outer wall 4. The gap between the two and the distance h1 from the lower contact point of the installed sealing strip to the lower edge of the flat steel are recorded. The recorded values ​​are plotted as follows: Figure 5 As shown in the figure, when recording different gap values ​​at the same time, the distance h2 from the contact point at the maximum pressure to the lower edge of the flat steel is plotted according to the recorded values ​​as follows Figure 6 As shown in the figure. Figure 5 As shown in FIG. 1 , when the gap value between the simulated inner wall 1 and the simulated outer wall 4 increases from 200 to 300 mm, the distance h1 from the contact point between the sealing strip 0 and the simulated outer wall 4 to the lower edge increases from 264.5 mm to 300 mm. Figure 5 As shown in the figure, it increases to 503mm, and at the same time, the distance h2 from the maximum pressure point to the lower edge of the flat steel increases from 348mm to Figure 6The figure shown increases to 578mm.

[0042] From the above, we can see that when the gap is too large and the sealing strip is too long, it will bend and waste materials. Figure 4 As shown in the figure, when the contact point of the sealing strip 0 is the maximum pressure point, it should be the sealing strip with the optimal size, refer to Figure 5 When selecting, when the specific gap value is certain, if one of the values ​​of the distance h1 from the contact point of the sealing strip 0 to the lower edge of the flat steel and the distance h2 from the maximum pressure point to the lower edge of the flat steel is not reached, it does not meet the optimal principle and should be abandoned in theory. Those skilled in the art should understand that the values ​​of the distance h1 from the contact point of the sealing strip 0 to the simulated outer wall 4 to the lower edge of the flat steel and the distance h2 from the contact point at the maximum pressure point to the lower edge of the flat steel can be slightly greater. When the tank stores oil products, the sealing effect is best when the liquid level in the tank is on the same horizontal line as the maximum pressure point of the sealing strip. Therefore, the angle of the arc of the sealing strip 0 should also be increased according to the installation position of the sealing strip 0, the size of the tank and the position of the liquid level, so as to select the appropriate and optimal size.

[0043] It should be noted that in the present application, the orientation or position relationship indicated by terms such as "up", "down", "left", "right", "front", "back", "top", "bottom", "inside", "outside", "middle", "vertical", "horizontal", "lateral", and "longitudinal" are based on the orientation or position relationship shown in the accompanying drawings.

[0044] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0045] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A device for testing the size of a floating plate gap sealing strip, characterized in that: The simulated inner wall (1) is used to simulate a floating plate, and a mounting seat (2) for connecting a sealing strip (0) is provided on the simulated inner wall (1). The mounting seat (2) is connected to a simulated outer wall (4) via a telescopic adjustment mechanism (3), and the simulated outer wall (4) is used to simulate the outer wall of a storage tank and press against the lower part of the limit sealing strip (0).

2. A floating plate gap sealing strip size testing device according to claim 1, characterized in that: The installation method of the mounting seat (2) and the sealing strip (0) is the same as the installation method of the floating plate and the sealing strip (0).

3. A floating plate gap sealing strip size testing device according to claim 1, characterized in that: The mounting seat (2) comprises a flat steel, on which a plurality of mounting holes (21) are evenly distributed, and the distance from the upper surface of the mounting plate to the upper surface of the simulated inner wall (1) is greater than ten centimeters.

4. A floating plate gap sealing strip size testing device according to claim 1, characterized in that: The telescopic adjustment mechanism (3) comprises a threaded rod and an adjustable nut; one end of the threaded rod is connected to the simulated outer wall (4), and the other end is connected to the simulated inner wall (1) via the adjustable nut.

5. The device for testing the size of the floating plate gap sealing strip according to claim 1, characterized in that: The telescopic adjustment mechanism (3) comprises an electric telescopic rod, one end of which is connected to the simulated outer wall (4) and the other end of which is connected to the simulated inner wall (1).

6. A floating plate gap sealing strip size testing device according to claim 1, characterized in that: The simulated inner wall (1) comprises at least two support columns (11), an inner wall plate (12), an upper crossbeam (13) and a lower crossbeam (14); the upper crossbeam (13), the lower crossbeam (14) and the two support columns (11) are respectively connected to the upper, lower, left and right ends of the inner wall plate (12).

7. A floating plate gap sealing strip size testing device according to claim 6, characterized in that: The inner wall plate (12) comprises an arc-shaped bent plate, the support column (11) comprises a rectangular tube, the upper cross beam (13) comprises an upper bent tube, and the lower cross beam (14) comprises a lower bent tube.

8. The device for testing the size of the floating plate gap sealing strip according to claim 1, characterized in that: The simulated outer wall (4) comprises an outer wall panel.

9. A floating plate gap sealing strip size testing device according to claim 8, characterized in that: The outer wall plate comprises an arc-shaped bent plate.

10. The device for testing the size of the floating plate gap sealing strip according to claim 1, characterized in that: The simulated outer wall (4) is connected to a pressure sensor, and the pressure sensor is used to measure the pressure generated on the simulated outer wall (4) when the sealing strip (0) is bent.

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