An oil product storage tank floating plate state monitoring device

Abstract

The application discloses an oil product storage tank floating disc state monitoring device, which comprises a signal processor, a transmission optical cable, optical fiber leakage detectors, optical fiber displacement meters and a floating disc. The optical fiber leakage detectors comprise first and second optical fiber leakage detectors, and the optical fiber displacement meters comprise first and second optical fiber displacement meters. The upper side of the optical fiber leakage detectors is provided with the transmission optical cable, the right side of the optical fiber leakage detectors is provided with a first support, the outer side of the first support is provided with a buoy, and the upper side of the buoy is provided with a rubber sealing ring. The oil product storage tank belongs to the explosive hazard area "0" zone, and has higher requirements for the equipment used inside. The optical signal monitoring is adopted, which is intrinsically safe and fully meets the use of the flammable and explosive places. The device has the advantages of simple structure, convenient installation, fast response, high sensitivity, accurate positioning of the failed buoy or floating box, greatly saved maintenance time, vivid monitoring, favorable production safety, stable operation and high reliability.

Description

Technical Field

[0001] This invention belongs to the field of oil monitoring technology, specifically relating to a floating roof status monitoring device for oil storage tanks. Background Technology

[0002] A floating roof moves up and down with changes in the oil level, its main function being to reduce oil evaporation. The buoyancy of the floating roof is provided by several pontoons or buoy boxes, which are sealed, hollow structures made of metal. Manufacturing defects and corrosion from the oil can damage the seals of these pontoons or buoy boxes, allowing oil to enter and reducing or eliminating buoyancy. When multiple pontoons or buoy boxes exhibit this problem, the buoyancy distribution across the entire floating roof becomes uneven, causing structural deformation. Severe deformation can lead to jamming (unstable vertical movement or complete malfunction). Continued use will exacerbate the deformation, eventually causing the seal between the floating roof and the pipeline wall to fail, allowing large amounts of oil to enter the top of the floating roof, rendering it completely ineffective and posing a significant safety hazard to production.

[0003] Currently, there are no effective monitoring methods to detect it. Damage to the floating roof is usually only discovered during scheduled maintenance, leading to significant oil consumption and economic losses during this period of malfunction. Summary of the Invention

[0004] The purpose of this invention is to provide a floating roof status monitoring device for oil storage tanks that minimizes oil loss, economic losses, and safety hazards.

[0005] To achieve the above-mentioned objectives, the present invention adopts the following technical solution:

[0006] A floating roof status monitoring device for oil storage tanks includes a signal processor, a transmission optical cable, an optical fiber leak detector, an optical fiber displacement meter, and a floating roof.

[0007] Based on the above characteristics, the optical fiber leakage detector includes a first optical fiber leakage detector and a second optical fiber leakage detector.

[0008] Based on the above characteristics, the fiber optic displacement meter includes a first fiber optic displacement meter and a second fiber optic displacement meter.

[0009] In some examples, the optical fiber leak detector has an optical cable on its upper middle side, a first bracket on its right side, a float on the outside of the first bracket, and a rubber sealing ring above the float.

[0010] In some examples, the optical fiber leak detector has an optical cable on its upper middle side, a first bracket on its right side, a float box on the outside of the first bracket, and a rubber sealing ring on the top of the float box.

[0011] In some examples, a fixing bolt is installed on the far left of the floating platform, a fiber optic displacement meter is installed on the upper side of the floating platform, a stainless steel wire rope is provided on the left side of the fiber optic displacement meter, and a second bracket is provided on the right side of the fiber optic displacement meter.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] The oil storage tank of this invention belongs to the "Zero" zone, an area of ​​high explosion hazard, and therefore has high requirements for the equipment used inside. It employs optical signal monitoring, which is inherently safe and fully meets the requirements for use in flammable and explosive environments; it has a simple structure and is easy to install; it has a fast response and high sensitivity; it accurately locates failed pontoons or float boxes, greatly saving maintenance time; the monitoring image is realistic and conducive to production safety; and it operates stably and with high reliability. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a floating roof status monitoring device for oil storage tanks according to the present invention.

[0015] Figure 2 This is a schematic diagram of the installation of the fiber optic leak detector and fiber optic displacement meter in this invention.

[0016] Figure 3 This is a schematic diagram of the installation of the fiber optic leak detector and the fiber optic displacement meter in one embodiment of the present invention.

[0017] Figure 4 This is a schematic diagram of the installation of the fiber optic displacement meter of the present invention.

[0018] Figure 5 This is a schematic diagram of the measuring range of the fiber optic displacement meter of the present invention.

[0019] The diagram shows: 1. Floating disc, 1-1. Floating cylinder, 1-2. Floating box, 2. Fiber optic leakage detector, 2-1. Fiber optic cable, 201. First fiber optic leakage detector, 202. Second fiber optic leakage detector, 3. Fiber optic displacement meter, 3-1. Stainless steel wire rope, 3-2. Second bracket, 301. First fiber optic displacement meter, 302. Second fiber optic displacement meter, 4. Rubber sealing ring, 5. First bracket, 6. Fixing bolt. Detailed Implementation

[0020] Embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While embodiments of the invention are shown in the drawings, it should be understood that the invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to make the invention more thorough and complete, and to fully convey the scope of the invention to those skilled in the art. Those skilled in the art can derive alternative technical solutions from the following description without departing from the spirit and scope of the invention.

[0021] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” and similar terms used in this patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, “an” or “a” and similar terms do not necessarily indicate a quantity limitation. Terms such as “comprising” or “including” mean that the element or object preceding the word encompasses the element or object listed following the word and its equivalents, without excluding other elements or objects. Terms such as “connected” or “linked” are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as “upper,” “lower,” “left,” and “right” are used only to indicate relative positional relationships, which may change accordingly when the absolute position of the described object changes.

[0022] The purpose of this invention is to provide a floating roof status monitoring device for oil storage tanks, which overcomes the problems of the prior art and has the following advantages in conjunction with the following description.

[0023] The following will combine Figure 1 The description of an oil storage tank floating roof condition monitoring device according to a first embodiment of the present invention will be further explained.

[0024] Figure 1 This invention illustrates a condition monitoring device for an oil storage tank floating roof according to the present invention. According to a first embodiment of the invention, the device includes a signal processor, a transmission optical cable 2-1, an optical fiber leak detector 2, an optical fiber displacement meter 3, and the floating roof 1. Based on the above features, the optical fiber leak detector 2 includes a first optical fiber leak detector 201 and a second optical fiber leak detector 202. Based on the above features, the optical fiber displacement meter 3 includes a first optical fiber displacement meter 301 and a second optical fiber displacement meter 302.

[0025] In some examples, the optical fiber leakage detector 2 has an optical cable 2-1 on its upper middle side, a first bracket 5 on its right side, a float 1-1 on the outside of the first bracket 5, and a rubber sealing ring 4 above the float 1-1.

[0026] In some examples, the optical fiber leakage detector 2 has an optical cable 2-1 on its upper middle side, a first bracket 5 on its right side, a float box 1-2 on the outside of the first bracket 5, and a rubber sealing ring 4 on the top of the float box 1-2.

[0027] In some examples, a fixing bolt 6 is installed on the far left of the floating plate 1, a fiber optic displacement meter N013 is installed on the upper side of the floating plate 1, a stainless steel wire rope 3-1 is provided on the left side of the fiber optic displacement meter 3, and a second bracket 3-2 is provided on the right side of the fiber optic displacement meter 3.

[0028] Fiber optic leak detectors are installed inside each or critical pontoon or pontoon to monitor the sealing condition inside. When oil leaks into the pontoon or pontoon, the fiber optic leak detector comes into contact with the oil. The oil causes strain on the grating inside the fiber optic leak detector. This strain causes a change in the center wavelength of the grating. By calculating the amount of change in the center wavelength, the deterioration or failure of the sealing of the pontoon or pontoon can be determined.

[0029] Fiber optic displacement gauges are evenly distributed circumferentially on the top of the floating platform to monitor its deformation. When the floating platform deforms, its edges undulate, causing displacement. This displacement in turn causes the fiber optic displacement gauges to shift, resulting in strain on the gratings embedded within the gauges. Consequently, the center wavelength of the gratings changes. By calculating the change in center wavelength, the deformation of the floating platform is monitored. The number of leakage detectors can be consistent with the number of pontoons or floating boxes, and the number of fiber optic displacement gauges can be evenly distributed according to the size of the floating platform.

[0030] The oil storage tank of this invention belongs to the "Zero" zone, an area of ​​high explosion hazard, and therefore has high requirements for the equipment used inside. It employs optical signal monitoring, which is inherently safe and fully meets the requirements for use in flammable and explosive environments; it has a simple structure and is easy to install; it has a fast response and high sensitivity; it accurately locates failed pontoons or float boxes, greatly saving maintenance time; the monitoring image is realistic and conducive to production safety; and it operates stably and with high reliability.

[0031] The fiber optic leak detectors are installed in the pre-set mounting holes on the top of the floats or pontoons. Then, each fiber optic leak detector is individually installed into its corresponding float or pontoon. They are then connected in series or parallel via optical cables to the processor for signal processing and data analysis. The rubber sealing ring 4 seals the openings in the floats or pontoons, and the first bracket 5 secures the fiber optic leak detectors, preventing movement within the floats or pontoons.

[0032] Fiber optic displacement gauges are evenly distributed around the circumference. First, several supports are set up at the center of the floating platform. Then, the fiber optic displacement gauges are mounted on the supports, and steel wires connect the gauges to the edge of the floating platform. When the buoyancy at this point decreases, the platform sinks, causing tension on the steel wires. This tension causes the fiber optic displacement gauges to shift, resulting in a change in their center wavelength. The fiber optic displacement gauges are connected in series or parallel via optical cables and then connected to a processor for signal processing and data analysis.

[0033] The height H of the support frame depends on the range of the fiber optic displacement gauge. Height H is used to increase the offset, ensuring displacement occurs after the floating platform sinks. A larger height H results in a larger displacement, requiring a larger range for the fiber optic displacement gauge. When the floating platform sinks, the dimension L of the fiber optic displacement gauge increases, initially at L1, then increasing to L2, with a change of L3. The coefficient of change in displacement depends on the parameters of the fiber optic displacement gauge, typically ranging from 10 to 50 pm / mm. Here, 20 pm / mm is selected. For example, when the center wavelength changes by 1000 pm, the L3 displacement is 50 mm. The sinking amount of the floating platform is then calculated using angle functions.

[0034] The above description is merely a specific embodiment of this disclosure, but the protection scope of this disclosure is not limited thereto. Any changes, substitutions or combinations that can be easily conceived by those skilled in the art within the technical scope disclosed in this disclosure or under the ideas disclosed in this disclosure should be covered within the protection scope of this disclosure.

Claims

1. A floating roof status monitoring device for oil storage tanks, characterized in that... It includes a signal processor, transmission optical cable, optical fiber leak detector (2), optical fiber displacement meter (3) and floating disk (1); The optical fiber leakage detector (2) has an optical cable (2-1) on its upper middle side, a first bracket (5) on its right side, a float (1-1) on the outside of the first bracket (5), and a rubber sealing ring (4) above the float (1-1). The optical fiber leakage detector (2) has an optical cable (2-1) on its upper middle side, a first bracket (5) on its right side, a float box (1-2) on the outside of the first bracket (5), and a rubber sealing ring (4) on the top of the float box (1-2). Fiber optic leak detectors (2) are installed inside each or key part of the float or pontoon to monitor the sealing status inside the float (1-1) or pontoon (1-2). When oil leaks into the float (1-1) or pontoon (1-2), the fiber optic leak detector (2) comes into contact with the oil. The oil causes strain on the grating inside the fiber optic leak detector (2). This strain causes the center wavelength of the grating to change. By calculating the amount of change in the center wavelength, it can be determined whether the sealing of the float or pontoon has deteriorated or failed. Fiber optic displacement gauges (3) are evenly distributed around the top of the floating disk to monitor the deformation of the floating disk (1). When the floating disk deforms, the edge of the floating disk undulates and displacement occurs, which causes the fiber optic displacement gauges (3) to move, causing the grating inside the fiber optic displacement gauges (3) to strain, which causes the center wavelength of the grating to change. By calculating the change in the center wavelength, the deformation of the floating disk is monitored. Several supports are set up at the center of the floating table, and then the fiber optic displacement meter is installed on the supports. The fiber optic displacement meter is connected to the edge of the floating table with steel wire. The height H of the support depends on the range of the fiber optic displacement meter. The height H is to increase the offset so that there is displacement after the floating table sinks. The larger the height H, the larger the displacement, and the larger the range of the fiber optic displacement meter is required.

2. The oil storage tank floating roof status monitoring device according to claim 1, characterized in that... The fiber optic leak detector (2) includes a first fiber optic leak detector (201) and a second fiber optic leak detector (202).

3. The oil storage tank floating roof status monitoring device according to claim 1, characterized in that... The fiber optic displacement meter (3) includes a first fiber optic displacement meter (301) and a second fiber optic displacement meter (302).

4. The oil storage tank floating roof status monitoring device according to claim 1, characterized in that... A fixing bolt (6) is installed on the leftmost side of the floating plate (1), and a fiber optic displacement meter (3) is installed on the upper side of the floating plate (1). A stainless steel wire rope (3-1) is provided on the left side of the fiber optic displacement meter (3), and a second bracket (3-2) is provided on the right side of the fiber optic displacement meter (3).

Images