A distributed optical fiber temperature measuring device for petroleum and petrochemical storage tanks

Abstract

This utility model relates to the field of fiber optic temperature measurement device technology. It provides a distributed fiber optic temperature measurement device for oil and petrochemical storage tanks, including a body with a movable opening on its side wall. A battery is installed inside the body. The device also includes an optical matching load, a horizontal plate, an optical fiber body, a rotating mechanism, and a cleaning mechanism. The optical matching load is mounted on the top side wall of the body and has a display screen. The horizontal plate is fixedly mounted on the body, and a drive column is rotatably mounted through the horizontal plate. A winding drum is fixedly mounted at the bottom of the drive column, and positioning plates are fixedly mounted at both ends of the winding drum. A laser generator is installed inside the winding drum. A conductive slip ring is fixedly mounted on the top side wall of the drive column. This technical solution addresses the technical problem in the prior art where the detection accuracy of optical fibers is easily affected by the adhesion of impurities during the detection process.

Description

Technical Field

[0001] This utility model relates to the field of fiber optic temperature measurement device technology, specifically to a distributed fiber optic temperature measurement device for petroleum and petrochemical storage tanks. Background Technology

[0002] A distributed fiber optic temperature measurement device is a temperature monitoring system based on fiber optic sensing technology. It is primarily used to monitor the temperature distribution in storage tanks in real time to ensure their safe operation. Its working principle is based on the optical time domain reflectometer (OTDR) principle and the backscattering Raman temperature effect of optical fiber. A laser source injects a pulse signal into the optical fiber. The light attenuates as it propagates through the fiber, and some of the scattered light propagates in the opposite direction to the incident light. The Raman signal carries temperature field information. Using the OTDR principle, the spatially distributed location of the temperature field inside the oil tank can be achieved, determining the fiber loss and the location of temperature measurement points. After processing the Raman signal by the digital signal processing system, the temperature distribution map along the entire optical fiber can be obtained.

[0003] However, after the inspection of oil and petrochemical storage tanks is completed, the optical fiber is usually protected by winding it up with a take-up roller inside the machine. However, during the inspection process, certain impurities are easily attached to the surface of the optical fiber. The attachment of these impurities can affect the inspection accuracy of the optical fiber, and thus affect the subsequent temperature measurement effect. Utility Model Content

[0004] To overcome the above-mentioned defects, this utility model provides a distributed optical fiber temperature measurement device for petroleum and petrochemical storage tanks, which solves the technical problem that the detection accuracy of optical fibers is easily affected by the adhesion of impurities during the detection process in the prior art.

[0005] According to one aspect, at least one embodiment of the present invention provides a distributed optical fiber temperature measurement device for oil and petrochemical storage tanks, comprising a body, a movable opening on the side wall of the body, a battery installed inside the body, and further comprising an optical matching load, a horizontal plate, an optical fiber body, a rotating mechanism, and a cleaning mechanism. The optical matching load is mounted on the top side wall of the body, and a display screen is mounted on the optical matching load. The horizontal plate is fixedly disposed on the body, and a drive column is rotatably disposed through the horizontal plate. A winding drum is fixedly disposed at the bottom end of the drive column, and positioning plates are fixedly disposed at both ends of the winding drum. A laser generator is installed inside the take-up drum. A conductive slip ring is fixedly installed on the top side wall of the drive column. The two ends of the conductive slip ring are electrically connected to the battery and the laser generator, respectively. The optical fiber body is wound on the take-up drum. One end of the optical fiber body passes through the side wall of the take-up drum and is fixedly connected to the laser generator. The other end of the optical fiber body passes through the moving port and is electrically connected to the optical matching load. The rotating mechanism is installed on the horizontal plate to control the rotation of the drive column. The cleaning mechanism is installed inside the machine body to clean the optical fiber body.

[0006] Preferably, the rotating mechanism includes a first gear ring, a first gear, and a first motor. The first gear ring is fixedly disposed on the side wall of the drive column, the first gear is rotatably disposed on the horizontal plate, the first gear meshes with the first gear ring, and the first motor is mounted on the horizontal plate, with the output end of the first motor fixedly connected to the first gear.

[0007] Furthermore, the cleaning mechanism includes a cleaning housing, cleaning rings, cleaning rods, a first driving mechanism, and a moving mechanism. The cleaning housing is fixedly mounted on a horizontal plate, and a cleaning port is provided on the cleaning housing. The cleaning port communicates with the moving port, and the optical fiber body passes through the cleaning port. The cleaning rings are rotatably mounted on two opposite side walls of the cleaning housing. A plurality of cleaning rods are fixedly mounted between two cleaning rings. The side walls of the cleaning rods are evenly distributed with cleaning bristles, which contact the optical fiber body. The first driving mechanism is located between the cleaning rings and the cleaning housing to drive the cleaning rings to rotate. The moving mechanism is located inside the cleaning housing to drive the optical fiber body to move within the cleaning housing.

[0008] Furthermore, the first driving mechanism includes a first cavity, a driving ring, and a first driving assembly. The first cavity is formed inside the cleaning housing, and a driving port is formed between the first cavity and the inner wall of the cleaning housing. The driving ring is fixedly mounted on one of the cleaning rings and extends into the first cavity through the driving port. The first driving assembly is disposed inside the first cavity and is used to control the rotation of the driving ring.

[0009] Furthermore, the first drive assembly includes a second gear ring, a second gear, and a second motor. The second gear ring is fixedly mounted on the drive ring, the second gear is rotatably mounted in the first cavity, the second gear meshes with the second gear ring, and the second motor is mounted on the machine body. The output end of the second motor is fixedly connected to the second gear.

[0010] Based on the above scheme, the moving mechanism includes a second cavity, a moving roller, and a second driving mechanism. The second cavity is provided on both sides of the cleaning housing. The moving roller is rotatably arranged on both sides of the optical fiber body in the second cavity. The moving roller is in contact with the optical fiber body. The second driving mechanism is arranged in the cleaning housing and is used to drive the moving roller to rotate.

[0011] Based on the above scheme, the second drive mechanism includes a third cavity, a second bevel gear, and a third motor. The third cavity is opened on one side of the second cavity. A first bevel gear is rotatably arranged on the side wall of the third cavity. A connecting rod is fixedly arranged between the first bevel gear and the adjacent moving roller. The second bevel gear is rotatably arranged on the side wall of the third cavity and meshes with the first bevel gear. The third motor is mounted on the machine body, and the output end of the third motor is fixedly connected to the second bevel gear.

[0012] Based on the above scheme, the side wall of the cleaning housing is provided with an exhaust pipe, which is connected to the external environment. A fan is installed on the inner bottom wall of the body. The input end of the fan is connected to the external environment, and the output end of the fan is connected to the cleaning housing. A filter screen is provided at the input end of the fan.

[0013] The beneficial effects of the embodiments of this utility model are as follows:

[0014] 1. In this utility model, by setting up a rotating mechanism, the operation of the first motor can drive the first gear to rotate, and at the same time, the meshing of the first gear with the first gear ring can drive the drive column and the winding drum to rotate, thereby facilitating the winding and protection of the optical fiber body.

[0015] 2. In this utility model, by setting up a cleaning mechanism, during the winding process, the operation of the second motor can drive the second gear to rotate. At the same time, the meshing of the second gear and the second gear ring drives the drive ring and the cleaning ring to rotate, thereby facilitating the cleaning brush bristles on the cleaning rod to clean the optical fiber body. During the cleaning process, impurities can be discharged through the exhaust pipe under the action of the fan, thereby facilitating the cleaning of the optical fiber body and preventing impurities from adhering to the optical fiber body and affecting the subsequent detection effect.

[0016] 3. In this utility model, by setting up a moving mechanism, the operation of the third motor can drive the second bevel gear to rotate. At the same time, the meshing of the second bevel gear and the first bevel gear drives the moving roller to rotate. Thus, the friction between the moving roller and the optical fiber body can be used to tighten the optical fiber body and drive the optical fiber body to move within the cleaning housing, thereby improving the cleaning effect. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this utility model and these drawings without any creative effort.

[0018] Figure 1 This is a schematic diagram of a distributed fiber optic temperature measurement device for petroleum and petrochemical storage tanks in one embodiment of the present invention.

[0019] Figure 2 for Figure 1 A schematic diagram of the cross-sectional structure of the organism in the embodiment;

[0020] Figure 3 for Figure 2 A magnified schematic diagram of the local structure at point A;

[0021] Figure 4 for Figure 1 A cross-sectional view of the cleaning housing in the embodiment;

[0022] Figure 5 for Figure 1 A schematic diagram of the cleaning ring structure in the embodiment.

[0023] In the diagram: 1. Main body; 2. Battery; 3. Optical matching load; 4. Display screen; 5. Horizontal plate; 6. Rewind drum; 7. Laser generator; 8. Conductive slip ring; 9. Fiber optic body; 10. First gear ring; 11. First gear; 12. First motor; 13. Cleaning housing; 14. Cleaning ring; 15. Cleaning rod; 16. First cavity; 17. Drive ring; 18. Second gear ring; 19. Second gear; 20. Second motor; 21. Second cavity; 22. Moving roller; 23. Third cavity; 24. First bevel gear; 25. Second bevel gear; 26. Third motor; 27. Fan. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit its scope.

[0025] To keep the drawings concise, only the parts relevant to the utility model are shown schematically in each drawing; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "a" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0026] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0028] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0030] like Figures 1-5 The diagram illustrates a distributed fiber optic temperature measurement device for oil and petrochemical storage tanks according to an embodiment of the present invention. It includes a body 1 with a movable opening on its side wall, a battery 2 installed inside the body 1, an optical matching load 3, a horizontal plate 5, an optical fiber body 9, a rotating mechanism, and a cleaning mechanism. The optical matching load 3 is mounted on the top side wall of the body 1, and a display screen 4 is mounted on it. The horizontal plate 5 is fixedly mounted on the body 1, and a drive column is rotatably mounted through the horizontal plate 5. A winding drum 6 is fixedly mounted at the bottom end of the drive column, and both ends of the winding drum 6 are fixedly mounted. The device includes a positioning plate and a laser generator 7 installed inside the winding drum 6. A conductive slip ring 8 is fixedly installed on the top side wall of the drive column, with both ends of the conductive slip ring 8 electrically connected to the battery 2 and the laser generator 7, respectively. An optical fiber body 9 is wound on the winding drum 6, with one end of the optical fiber body 9 penetrating the side wall of the winding drum 6 and fixedly connected to the laser generator 7, and the other end of the optical fiber body 9 penetrating the moving port and electrically connected to the optical matching load 3. A rotating mechanism is installed on the horizontal plate 5 to control the rotation of the drive column, and a cleaning mechanism is installed inside the body 1 to clean the optical fiber body 9.

[0031] Reference Figures 2-4 The rotating mechanism includes a first gear ring 10, a first gear 11, and a first motor 12. The first gear ring 10 is fixedly mounted on the side wall of the drive column, and the first gear 11 is rotatably mounted on the horizontal plate 5. The first gear 11 meshes with the first gear ring 10. The first motor 12 is mounted on the horizontal plate 5, and the output end of the first motor 12 is fixedly connected to the first gear 11. Specifically, the operation of the first motor 12 can drive the first gear 11 to rotate. At the same time, the meshing of the first gear 11 with the first gear ring 10 drives the drive column and the winding drum 6 to rotate, thereby facilitating the winding and protection of the optical fiber body 9.

[0032] Reference Figures 2-5The cleaning mechanism includes a cleaning housing 13, cleaning rings 14, cleaning rods 15, a first drive mechanism, and a moving mechanism. The cleaning housing 13 is fixedly mounted on the horizontal plate 5. A cleaning port is provided on the cleaning housing 13, which communicates with the moving port, and the optical fiber body 9 passes through the cleaning port. Cleaning rings 14 are rotatably mounted on two opposite side walls of the cleaning housing 13. Multiple cleaning rods 15 are fixedly mounted between the two cleaning rings 14. Cleaning bristles are evenly distributed on the side walls of the cleaning rods 15, and these bristles contact the optical fiber body 9. The first drive mechanism is located between the cleaning rings 14 and the cleaning housing 13. A first driving mechanism is used to drive the cleaning ring 14 to rotate. A moving mechanism is located within the cleaning housing 13 and is used to drive the fiber optic body 9 to move within the cleaning housing 13. The first driving mechanism includes a first cavity 16, a driving ring 17, and a first driving assembly. The first cavity 16 is located within the cleaning housing 13, and a driving port is formed between the first cavity 16 and the inner wall of the cleaning housing 13. The driving ring 17 is fixedly mounted on one of the cleaning rings 14 and extends through the driving port into the first cavity 16. The first driving assembly is located within the first cavity 16 and is used to control the movement of the driving ring 17. The first drive assembly includes a second gear ring 18, a second gear 19, and a second motor 20. The second gear ring 18 is fixedly mounted on the drive ring 17. The second gear 19 is rotatably mounted in the first cavity 16 and meshes with the second gear ring 18. The second motor 20 is mounted on the body 1, and its output end is fixedly connected to the second gear 19. An exhaust pipe is provided on the side wall of the cleaning housing 13, which is connected to the external environment. A fan 27 is installed on the inner bottom wall of the body 1. The input end of the fan 27 is connected to the external environment, and its output end is connected to the cleaning housing. The body 13 is connected, and a filter screen is provided at the input end of the fan 27. Specifically, during the winding process, the operation of the second motor 20 can drive the second gear 19 to rotate. At the same time, the meshing of the second gear 19 with the second gear ring 18 drives the drive ring 17 and the cleaning ring 14 to rotate, thereby facilitating the cleaning brush bristles on the cleaning rod 15 to clean the optical fiber body 9. During the cleaning process, impurities can be discharged through the exhaust pipe under the action of the fan 27, thereby facilitating the cleaning of the optical fiber body 9 and preventing impurities from adhering to the optical fiber body 9 and affecting the subsequent detection effect.

[0033] Reference Figures 2-4The moving mechanism includes a second cavity 21, a moving roller 22, and a second driving mechanism. The cleaning housing 13 has two second cavities 21 on each side. Moving rollers 22 are rotatably mounted on both sides of the optical fiber body 9 within each second cavity 21, and the moving rollers 22 contact the optical fiber body 9. The second driving mechanism is located within the cleaning housing 13 and is used to drive the moving rollers 22 to rotate. The second driving mechanism includes a third cavity 23, a second bevel gear 25, and a third motor 26. The third cavity 23 is located on one side of the second cavity 21. A first bevel gear 24 is rotatably mounted on the side wall of the third cavity 23, and the first bevel gear 24 is positioned between the first bevel gear 24 and the adjacent moving roller 22. A connecting rod is fixedly installed. The second bevel gear 25 is rotatably mounted on the side wall of the third cavity 23. The second bevel gear 25 meshes with the first bevel gear 24. The third motor 26 is mounted on the body 1. The output end of the third motor 26 is fixedly connected to the second bevel gear 25. Specifically, the operation of the third motor 26 can drive the second bevel gear 25 to rotate. At the same time, the meshing of the second bevel gear 25 with the first bevel gear 24 drives the moving roller 22 to rotate. Thus, the friction between the moving roller 22 and the optical fiber body 9 can be used to tighten the optical fiber body 9 and drive the optical fiber body 9 to move within the cleaning housing 13, thereby improving the cleaning effect.

[0034] In this embodiment, during use, the operator can drive the first gear 11 to rotate via the operation of the first motor 12. Simultaneously, the meshing of the first gear 11 with the first gear ring 10 drives the drive column and the winding drum 6 to rotate, facilitating the winding and protection of the optical fiber body 9. During the winding process, the operation of the second motor 20 can drive the second gear 19 to rotate. Simultaneously, the meshing of the second gear 19 with the second gear ring 18 drives the drive ring 17 and the cleaning ring 14 to rotate, facilitating the cleaning brush bristles on the cleaning rod 15 to clean the optical fiber body 9. During the cleaning process, a fan can be used... Under the action of 27, impurities are discharged through the exhaust pipe, which facilitates the cleaning of the optical fiber body 9 and avoids the adhesion of impurities to the optical fiber body 9, which would affect the subsequent detection effect. During the cleaning process, the operator controls the third motor 26 to work. The operation of the third motor 26 can drive the second bevel gear 25 to rotate. At the same time, the meshing of the second bevel gear 25 and the first bevel gear 24 drives the moving roller 22 to rotate. Thus, the friction between the moving roller 22 and the optical fiber body 9 can be used to tighten the optical fiber body 9 and drive the optical fiber body 9 to move within the cleaning housing 13, thereby improving the cleaning effect.

[0035] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A distributed fiber optic temperature measurement device for petroleum and petrochemical storage tanks, comprising a body (1), wherein a movable opening is provided on the side wall of the body (1), and a storage battery (2) is installed inside the body (1), characterized in that, Also includes: Optical matching load (3), the optical matching load (3) is installed on the top side wall of the body (1), and a display screen (4) is installed on the optical matching load (3). A horizontal plate (5) is fixedly mounted on the machine body (1). A drive column is mounted through and rotatably mounted on the horizontal plate (5). A winding drum (6) is fixedly mounted at the bottom end of the drive column. Positioning plates are fixedly mounted at both ends of the winding drum (6). A laser generator (7) is installed inside the winding drum (6). The top sidewall of the drive column is fixedly provided with a conductive slip ring (8), and the two ends of the conductive slip ring (8) are electrically connected to the battery (2) and the laser generator (7) respectively. The optical fiber body (9) is wound on the winding drum (6). One end of the optical fiber body (9) passes through the side wall of the winding drum (6) and is fixedly connected to the laser generator (7). The other end of the optical fiber body (9) passes through the movable port and is electrically connected to the optical matching load (3). A rotating mechanism is provided on the horizontal plate (5) and is used to control the drive column to rotate. A cleaning mechanism is provided inside the body (1) for cleaning the optical fiber body (9).

2. The distributed fiber temperature measuring device for oil and petrochemical storage tank according to claim 1, characterized in that, The rotating mechanism includes: The first toothed ring (10) is fixedly disposed on the side wall of the drive column; The first gear (11) is rotatably mounted on the horizontal plate (5) and meshes with the first gear ring (10); The first motor (12) is mounted on the horizontal plate (5), and the output end of the first motor (12) is fixedly connected to the first gear (11).

3. The distributed fiber optic temperature sensing device for petroleum and petrochemical storage tanks of claim 2, wherein, The cleaning facility includes: A cleaning housing (13) is fixedly mounted on a horizontal plate (5), and a cleaning port is provided on the cleaning housing (13); The cleaning port is connected to the moving port and the optical fiber body (9) passes through the cleaning port; Cleaning ring (14) is rotatably provided on both opposite side walls of the cleaning housing (13). Cleaning rod (15), a plurality of cleaning rods (15) are fixedly arranged between the two cleaning rings (14), and the sidewalls of the cleaning rods (15) are evenly distributed with cleaning bristles, which are in contact with the optical fiber body (9). A first driving mechanism is disposed between the cleaning ring (14) and the cleaning housing (13) for driving the cleaning ring (14) to rotate; A moving mechanism is disposed within the cleaning housing (13) for driving the optical fiber body (9) to move within the cleaning housing (13).

4. The distributed fiber temperature measuring device for oil and petrochemical storage tank according to claim 3, characterized in that, The first driving mechanism includes: A first cavity (16) is formed inside the cleaning housing (13), and a drive port is formed between the first cavity (16) and the inner wall of the cleaning housing (13). A drive ring (17) is fixedly disposed on one of the cleaning rings (14), and the drive ring (17) extends through the drive port into the first cavity (16); A first drive assembly is disposed within the first cavity (16) and is used to control the rotation of the drive ring (17).

5. The distributed fiber optic temperature sensing device for petroleum and petrochemical storage tanks of claim 4, wherein, The first driving component includes: The second toothed ring (18) is fixedly disposed on the drive ring (17); The second gear (19) is rotatably disposed in the first cavity (16) and meshes with the second gear ring (18); The second motor (20) is mounted on the body (1), and the output end of the second motor (20) is fixedly connected to the second gear (19).

6. The distributed fiber temperature measuring device for oil and petrochemical storage tanks according to claim 5, characterized in that, The mobile mechanism includes: The second cavity (21) is provided on both sides of the cleaning housing (13); The movable roller (22) is rotatably arranged on both sides of the optical fiber body (9) in the second cavity (21), and the movable roller (22) is in contact with the optical fiber body (9). The second drive mechanism is disposed inside the cleaning housing (13) and is used to drive the moving roller (22) to rotate.

7. A distributed fiber optic temperature measurement device for petroleum and petrochemical storage tanks according to claim 6, characterized in that, The second drive mechanism includes: The third cavity (23) is opened on one side of the second cavity (21). The side wall of the third cavity (23) is rotatably provided with a first bevel gear (24). A connecting rod is fixedly provided between the first bevel gear (24) and the adjacent moving roller (22). The second bevel gear (25) is rotatably disposed on the side wall of the third cavity (23), and the second bevel gear (25) meshes with the first bevel gear (24); The third motor (26) is mounted on the body (1), and the output end of the third motor (26) is fixedly connected to the second bevel gear (25).

8. The distributed fiber temperature measuring device for oil and petrochemical storage tanks according to claim 7, characterized in that, The side wall of the cleaning housing (13) is provided with an exhaust pipe, which is connected to the external environment. A fan (27) is installed on the inner bottom wall of the body (1). The input end of the fan (27) is connected to the external environment, and the output end of the fan (27) is connected to the cleaning housing (13). A filter screen is provided at the input end of the fan (27).

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