A buoy for improving the precision of a fiber grating static level

Abstract

The utility model discloses a kind of buoy for improving the precision of fiber grating static level gauge, it is related to level gauge technical field, including instrument main body, instrument base, buoy mechanism, connecting screw, optical fiber line, the bottom of instrument base is fixedly installed in instrument main body. The utility model, when static level gauge is detected, the inside of buoy mechanism is provided with bottom ring disc and towline two, the bottom of buoy mechanism is added weight, and the gravity center of three-section buoy mechanism is synthesized one total gravity center, can guarantee the gravity center of three-section buoy mechanism on same horizontal line, make the movement direction of multiple buoy mechanism be constrained, difficult to deviate alone, according to the setting of towline one and sleeve line cylinder to the top of tension line is fixed, reduce the gravity center position between tension line and buoy, greatly improve the stability of buoy mechanism, can prevent buoy from occurring inclination when measuring, make buoy keep vertical when measuring.

Description

Technical Field

[0001] This utility model relates to the field of leveling technology, specifically to a float for improving the accuracy of a fiber optic grating hydrostatic level. Background Technology

[0002] A fiber optic grating hydrostatic level is a high-precision displacement monitoring device. Based on fiber optic grating sensing technology, it achieves real-time monitoring of structural settlement or displacement by sensing changes in liquid level between the measured point and a reference point. Utilizing the characteristic that the grating wavelength changes with liquid level (pressure), it converts physical displacement into changes in optical signals. It boasts advantages such as resistance to electromagnetic interference, corrosion resistance, and high measurement accuracy (down to the micrometer level). It is widely used in deformation monitoring of large structures such as bridges, dams, and high-rise buildings, providing data support for engineering safety assessments and stability analyses.

[0003] The existing reference is Chinese Utility Model Patent CN221259867U, which discloses a fiber optic grating static level. This fiber optic grating static level includes a base with protective cylinders fixedly connected to both ends of its upper surface. A level housing is inserted inside the protective cylinders, and a displacement indicator is connected to one end of the level housing. A measuring rod is connected to one end of the displacement indicator. Hinges are provided on both sides of the base, and pull rods are hinged to the surfaces of the hinges. The pull rods are located on one side of the protective cylinders, and a handle is provided at one end of the pull rod. A combined structure is provided on one side of the pull rod and connected to one side of the level housing. The handle structure includes a crossbar and a rotating shaft, with the rotating shaft connected to both ends of the crossbar. This allows for combined installation and positioning, facilitating testing and use. Furthermore, the pull rod on the side connects the handle structure and the combined structure, aiding in positioning and facilitating lifting. Alternatively, they can be positioned separately to avoid interference, ensuring stability and ease of adjustment.

[0004] Currently, the floats used to improve the accuracy of fiber optic hydrostatic levels still have the following problems:

[0005] Because the verticality of traditional pontoons is difficult to guarantee, they are prone to tilting during long-term use due to factors such as water flow disturbance, installation errors, or changes in ambient temperature. This causes the correlation between buoyancy and displacement to deviate from linearity, resulting in significant errors in measurement results. This is especially true in complex conditions, such as water level monitoring in large-scale water conservancy projects, where pontoon tilting can distort monitoring data. Furthermore, the balance control between buoyancy and gravity is not precise enough. Since liquid density and measurement range requirements vary in different measurement scenarios, traditional pontoons cannot flexibly adjust the buoyancy according to actual working conditions. If the buoyancy is too high, it will exceed the tensile strength that the fiber optic grating can withstand, causing sensor damage; if the buoyancy is too low, it will not meet the measurement sensitivity requirements, leading to a decrease in measurement accuracy. Utility Model Content

[0006] The purpose of this invention is to provide a float that improves the accuracy of a fiber optic grating hydrostatic level, thereby solving the problems of vertical fixation of the level and gravity control of the float mentioned in the background art.

[0007] To achieve the above-mentioned objectives, the present invention adopts the following technical solution:

[0008] This utility model provides a float for improving the accuracy of a fiber Bragg grating hydrostatic level, comprising an instrument body, an instrument base, a float mechanism, a connecting screw, and an optical fiber. The instrument base is fixedly installed at the bottom of the instrument body, and a settlement measurement float mechanism is connected to the middle of the instrument body. A connecting screw is installed at the midpoint of the top of the instrument body, and the top of the connecting screw is connected to the optical fiber.

[0009] The float mechanism includes internally inserted tension lines, with a sleeve attached to the top of the tension lines. A float top cover with the tension lines inserted is fixedly installed on the top of the float mechanism, and the float top cover is fixedly connected to a mounting ring via a first traction line connected above. The mounting ring is located above and in the middle of the tension lines. A bottom ring plate is installed at the bottom of the float mechanism, and the bottom ring plate is fixedly connected to the tension lines via a second traction line connected above.

[0010] Preferably, the tension wires are respectively inserted inside the instrument body and the float mechanism and connected to the optical fiber wires, and the tension wires are fixedly connected to the instrument body through the bottom ring.

[0011] Preferably, the mounting ring is located in the middle and lower part of the tension line, and the bottom ring plate is fixedly connected to the side of the tension line through the second traction line and the mounting ring, and the sleeve is connected to the inner top of the instrument body.

[0012] Preferably, the float mechanism is a three-section structure, with connecting screws on both sides of the middle float mechanism, and insert rings installed on the opposite side of the connecting screws. The tension line inside the float mechanism has a threaded edge, and the float mechanism is spliced ​​together by connecting screws and insert rings.

[0013] Preferably, a conical gravity device is installed inside the upper part of the instrument base, and the gravity device is fixedly connected to the bottom end of the instrument base through a pressure column connected to the bottom. Equipment screws are installed on both sides of the instrument base.

[0014] Preferably, the main body of the instrument is transparent, and the float mechanism is made of stainless steel.

[0015] Preferably, the interior of the float mechanism is hollow, and weights can be installed to increase the weight of the float mechanism through the threads on the edge of the tension line.

[0016] Compared with existing technologies, one or more of the above technical solutions have the following beneficial effects:

[0017] 1. When the hydrostatic level is being tested, the float mechanism is spliced ​​together by connecting screw discs and insert rings. Weights can be added inside the float mechanism through the threads on the edge of the tension line, so that the weight inside the float mechanism matches the density and range requirements of the measured liquid, thereby improving the accuracy of liquid measurement. This design not only allows for flexible adjustment of the buoyancy of the float mechanism, enabling it to be adjusted according to the tension of the fiber optic grating and the liquid density, but also controls the balance between the float mechanism and gravity, assisting in the balance control of the float mechanism during measurement, preventing the float from shaking during measurement, and improving the accuracy of the measurement results.

[0018] 2. When the static level is being tested, the float mechanism is equipped with a bottom ring plate and a second traction line, which adds weight to the bottom of the float mechanism. The centers of gravity of the three sections of the float mechanism are combined into a single center of gravity, ensuring that the centers of gravity of the three sections of the float mechanism are on the same horizontal line. This constrains the movement direction of multiple float mechanisms, making it difficult for them to deviate individually. Furthermore, the top of the tension line is fixed according to the setting of the first traction line and the sleeve, which lowers the center of gravity between the tension line and the float, greatly improving the stability of the float mechanism. This prevents the float from tilting during measurement and keeps the float vertical during measurement. Attached Figure Description

[0019] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0020] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the float mechanism structure of this utility model;

[0023] Figure 3 This is a schematic diagram of the internal structure of the float mechanism of this utility model;

[0024] Figure 4 This is a schematic diagram of the internal structure of the instrument base of this utility model;

[0025] In the picture:

[0026] 1. Instrument body; 2. Instrument base; 21. Gravity device; 22. Pressure column; 23. Equipment screw; 3. Float mechanism; 31. Tension line; 32. Sleeve; 33. Mounting ring; 34. Traction line one; 35. Float top cover; 36. Traction line two; 37. Bottom ring plate; 38. Connecting screw plate; 39. Insertion ring; 4. Connecting screw; 5. Fiber optic cable. Detailed Implementation

[0027] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0028] Please see Figures 1-4 A float for improving the accuracy of a fiber optic grating hydrostatic level includes an instrument body 1, an instrument base 2, a float mechanism 3, a connecting screw 4, and an optical fiber 5. The instrument base 2 is fixedly installed at the bottom of the instrument body 1. A conical gravity device 21 is installed inside the upper part of the instrument base 2, and the gravity device 21 is fixedly connected to the bottom end of the instrument base 2 through a pressure column 22 connected to the bottom. Equipment screws 23 are installed on both sides of the instrument base 2.

[0029] The float of this utility model for improving the accuracy of a fiber Bragg grating hydrostatic level, the conical gravity device 21 and the pressure column 22 can increase the weight of the bottom of the instrument base 2, and the bottom weight of the instrument base 2 is at a low position. When the fiber Bragg grating is pulled out, the instrument base 2 can prevent the entire device from shaking and keep the internal liquid stable.

[0030] For details, please refer to the following: Figure 2 and Figure 3 As shown, a settling measurement float mechanism 3 is connected in the middle of the instrument body 1. The float mechanism 3 includes a tension line 31 inserted inside. A sleeve 32 is sleeved on the top of the tension line 31. A float top cover 35 with the tension line 31 inserted inside is fixedly installed on the top of the float mechanism 3. The float top cover 35 is fixedly connected to the upper traction line 34 and the mounting ring 33. The mounting ring 33 is located in the middle and upper part of the tension line 31. A bottom ring plate 37 is installed at the bottom of the float mechanism 3. The bottom ring plate 37 is fixedly connected to the tension line 31 through the upper traction line 36.

[0031] In this embodiment, the tension wire 31 is inserted into the interior of the instrument body 1 and the float mechanism 3 and connected to the optical fiber 5. The tension wire 31 is fixedly connected to the instrument body 1 through the bottom ring. The mounting ring 33 is located in the middle and lower part of the tension wire 31. The bottom ring plate 37 is fixedly connected to the side of the tension wire 31 through the second traction wire 36 and the mounting ring 33. The sleeve 32 is connected to the top of the interior of the instrument body 1. The float mechanism 3 has a three-section structure. The middle float mechanism 3 is connected to the two sides of the connecting screw plate 38. The opposite side of the connecting screw plate 38 is equipped with the insertion plate ring 39. The edge of the tension wire 31 inside the float mechanism 3 is threaded. The float mechanism 3 is spliced ​​by the connecting screw plate 38 and the insertion plate ring 39. The instrument body 1 is transparent. The float mechanism 3 is made of stainless steel. The interior of the float mechanism 3 is hollow. Weights can be installed through the threads on the edge of the tension wire 31 to increase the weight of the float mechanism 3.

[0032] For details, please refer to the following: Figure 1 As shown, a connecting screw 4 is installed at the top midpoint of the instrument body 1, and the top of the connecting screw 4 is connected to the optical fiber line 5.

[0033] This invention relates to a float mechanism for improving the accuracy of a fiber optic grating hydrostatic level. The tension line 31, with its edge threaded, holds weights, increasing the overall weight of the float mechanism 3. This makes the float mechanism 3 proportional to the density of the liquid, improving the accuracy of liquid measurements. The connecting screw 38 facilitates disassembly of the float mechanism 3 for internal weight adjustment. Simultaneously, the float mechanism 3 is connected to the tension line 31 via a second traction line 36 at its bottom, a mounting ring 33, and the internal tension line 31, further weighting the bottom of the float mechanism 3 and preventing it from swaying or tilting due to liquid movement. Furthermore, the float mechanism 3 has a three-section structure, ensuring that the centers of gravity of multiple float mechanisms 3 are aligned, preventing overall equipment center of gravity shift caused by the deviation of a single float mechanism 3. The tension line 31 is connected to the instrument body 1 via a sleeve 32, extending its center of gravity and lowering the distance between the tension line 31 and the float mechanism 3, thus reducing the center of gravity height and ensuring stability during float measurements.

[0034] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A float for improving the accuracy of a fiber optic hydrostatic level, comprising an instrument body (1), an instrument base (2), a float mechanism (3), a connecting screw (4), and an optical fiber (5), characterized in that: The instrument base (2) is fixedly installed at the bottom of the instrument body (1), and a sinking measurement float mechanism (3) is connected in the middle of the instrument body (1). A connecting screw (4) is installed at the top midpoint of the instrument body (1), and the top of the connecting screw (4) is connected to the optical fiber (5). The float mechanism (3) includes a tension line (31) inserted inside. A sleeve (32) is sleeved on the top of the tension line (31). A float top cover (35) through which the tension line (31) is inserted is fixedly installed on the top of the float mechanism (3). The float top cover (35) is fixedly connected to the upper traction line (34) and the mounting ring (33). The mounting ring (33) is located in the middle and upper part of the tension line (31). A bottom ring plate (37) is installed at the bottom of the float mechanism (3). The bottom ring plate (37) is fixedly connected to the upper traction line (36) and the tension line (31).

2. The float for improving the accuracy of a fiber optic grating hydrostatic level according to claim 1, characterized in that: The tension line (31) is inserted into the instrument body (1) and the float mechanism (3) respectively and connected to the optical fiber line (5), and the tension line (31) is fixedly connected to the instrument body (1) through the bottom ring.

3. The float for improving the accuracy of a fiber optic grating hydrostatic level according to claim 1, characterized in that: The mounting ring (33) is located at the middle and lower part of the tension line (31), and the bottom ring plate (37) is fixedly connected to the side of the tension line (31) through the second traction line (36) and the mounting ring (33). The sleeve (32) is connected to the top inside of the instrument body (1).

4. The float for improving the accuracy of a fiber optic grating hydrostatic level according to claim 1, characterized in that: The float mechanism (3) is a three-section structure, and the middle float mechanism (3) is connected to the two sides by connecting screws (38), and the opposite side of the connecting screws (38) is equipped with a plug ring (39). The tension line (31) inside the float mechanism (3) has a threaded edge. The float mechanism (3) is spliced ​​by connecting screws (38) and plug ring (39).

5. The float for improving the accuracy of a fiber optic grating hydrostatic level according to claim 1, characterized in that: A conical gravity device (21) is installed inside the upper part of the instrument base (2), and the gravity device (21) is fixedly connected to the bottom end of the instrument base (2) through a pressure column (22) connected to the bottom. Equipment screws (23) are installed on both sides of the instrument base (2).

6. The float for improving the accuracy of a fiber optic grating hydrostatic level according to claim 1, characterized in that: The main body (1) of the instrument is transparent, and the float mechanism (3) is made of stainless steel.

7. The float for improving the accuracy of a fiber optic grating hydrostatic level according to claim 1, characterized in that: The interior of the float mechanism (3) is hollow, and the weight can be installed through the thread on the edge of the tension line (31) to increase the weight of the float mechanism (3).

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