Optical fiber probe for water leakage monitoring

Abstract

The utility model relates to the technical field of optical fiber probes, and discloses an optical fiber probe for water leakage monitoring, which comprises a probe main body for wrapping an optical fiber, the front end of the probe main body is provided with a water permeable section of which the radial size is reduced in the radial direction, and the water permeable section is provided with a counterweight body and a floating plate. The counterweight body is fixed at the free end of the permeable section and is used for enabling the gravity center of the probe main body to be located at the front end, the floating plate is slidably arranged on the permeable section in a sleeving manner and is located between the probe main body and the counterweight body, the floating plate is slidably limited through the probe main body and the counterweight body, and a permeable hole is formed in the permeable section; the water permeable hole is located in the sliding area of the floating plate, is close to the counterweight body and is communicated to the area where the optical fiber of the inner cavity of the probe main body is located. The water-permeable and dust-proof functions are achieved, the defects of an existing optical fiber probe are overcome, and the actual requirements of optical fiber water leakage detection equipment are met.

Description

Technical Field

[0001] The utility model relates to the technical field of optical fiber probes, in particular to an optical fiber probe for water leakage monitoring. Background Art

[0002] Fiber optic probes are key signal-receiving components in fiber optic sensors. They are responsible for capturing and transmitting information about the state of the object being measured. This information is transmitted in the form of optical signals, which are ultimately converted into electrical signals for analysis and processing. Existing fiber optic probes vary depending on the state information they capture.

[0003] Water leak detection equipment requires probes that can detect water leaks in a space and have basic dustproof and water-permeable functions. However, existing fiber optic probes do not have both dustproof and water-permeable functions, and also have disadvantages such as inconvenient cleaning, high cost, and difficulty in replacement. Utility Model Content

[0004] The utility model provides an optical fiber probe for water leakage monitoring, which realizes the water-permeable and dust-proof functions, makes up for the shortcomings of existing optical fiber probes, and meets the actual needs of optical fiber water leakage detection equipment; it solves the technical problem that existing optical fiber probes cannot adapt to the use requirements of water leakage detection equipment.

[0005] According to one aspect of the utility model, there is provided an optical fiber probe for water leakage monitoring, comprising a probe body for wrapping an optical fiber, the front end of the probe body having a water-permeable section with a radially reduced radial dimension, a counterweight body and a floating plate being provided on the water-permeable section, the counterweight body being fixed to the free end of the water-permeable section and being used to place the center of gravity of the probe body at the front end, the floating plate being slidably mounted on the water-permeable section and being located between the probe body and the counterweight body, the floating plate being slidingly limited by the probe body and the counterweight body, a water-permeable hole being provided on the water-permeable section, the water-permeable hole being located in the sliding area of the floating plate and being arranged close to the counterweight body, the water-permeable hole being connected to the area where the optical fiber is located in the inner cavity of the probe body.

[0006] Furthermore, the floating plate includes a bottom plate slidably arranged on the permeable section and four side plates extending from the edges of the bottom plate toward the probe body. The four side plates slide in conjunction with the outer side walls of the probe body. The floating plate, the permeable section and the probe body enclose a regulating cavity.

[0007] Furthermore, the counterweight body is detachably connected to the free end of the water-permeable section via threads.

[0008] Furthermore, the tail end of the probe body has a storage cavity arranged in a ring shape, and the storage cavity is communicated with the area where the optical fiber is located.

[0009] Furthermore, a sealing device and a tail clip are provided at the tail end of the probe body. The sealing device is sealed and covered on the tail end of the probe body and is enclosed with the probe body to form a storage cavity. The tail clip is sleeved outside the sealing device and the probe body and is threadedly connected to the outer wall surface of the probe body. The sealing device is pressed and sealed on the probe body through the tail clip.

[0010] Furthermore, a sealing ring is provided in the cavity formed by the sealing device, the tail clip and the probe body.

[0011] Furthermore, the sealing device includes a sealing body, an outer wall of the sealing body is provided with a convex ring for cooperating with the tail clip, and an end of the sealing body facing the storage cavity is provided with an annular sliding sleeve for slidingly cooperating with the outer wall surface of the storage cavity. A gap is left between the inner wall surface of the annular sliding sleeve and the inner wall surface of the storage cavity, and between the inner bottom surface of the annular sliding sleeve and the end wall surface of the storage cavity, so that the storage cavity is connected with the area where the optical fiber is located.

[0012] Furthermore, the counterweight, the floating plate, the water-permeable section, the probe body, the sealing device and the tail clip are coaxially arranged.

[0013] Furthermore, a through hole for the optical fiber to pass through is opened on the central axis of the sealing device.

[0014] Furthermore, the outer end of the sealing device is provided with a magnetic clamp which is sleeved outside the optical fiber and is used to protect the protruding optical fiber and seal the perforated portion.

[0015] According to another aspect of the present invention, a water leakage detection device is provided, which includes the above-mentioned optical fiber probe for water leakage monitoring.

[0016] The utility model has the following beneficial effects:

[0017] The fiber optic probe for water leakage monitoring of the present invention is provided with a counterweight, water permeability and water control functions on the basis of the existing fiber optic probe; the front end of the probe body is set as a water permeable section with a reduced radial size. Since the radial size of the water permeable section is relatively small, the water permeable part, the water control part and the counterweight part are arranged on the water permeable section without affecting the use of the fiber optic probe; a counterweight body is arranged at the front end of the water permeable section so that the front end of the fiber optic probe is kept facing downward due to the action of gravity when it moves; at the same time, the water permeable part and the water control part are both arranged on the water permeable section between the counterweight body and the probe body. Specifically, a cleaning liquid is stored in the inner cavity of the probe body. A water-permeable hole and a floating plate are provided in the water-permeable section between the counterweight and the probe body, with the hole positioned close to the counterweight. When the front end is facing downward, the floating plate closes the hole due to gravity. External force (for example, when the fiber optic probe enters the liquid and the buoyancy generated by the floating plate) can push the floating plate to open the water-permeable hole, thereby achieving water permeability and control. This facilitates opening the water-permeable hole as needed to connect it to the inner cavity of the probe body, thereby encouraging cleaning fluid in the inner cavity to flow toward the water-permeable hole to clean the optical fiber within the probe body, and closing the water permeability to prevent contamination of the optical fiber. This achieves water-permeable and dust-proof functions, addresses the shortcomings of existing fiber optic probes, and meets the practical needs of fiber optic water leak detection equipment.

[0018] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which constitute part of the present invention, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0020] Figure 1 This is a schematic cross-sectional view of an optical fiber probe for water leakage monitoring according to a preferred embodiment of the present invention;

[0021] Figure 2 The figure is a schematic diagram of the appearance and structure of an optical fiber probe for water leakage monitoring according to a preferred embodiment of the present utility model.

[0022] Legend:

[0023] 100. Probe body; 101. Water-permeable section; 102. Water-permeable hole; 200. Counterweight; 300. Floating plate; 301. Bottom plate; 302. Side plates; 400. Adjustment chamber; 500. Storage chamber; 600. Sealing device; 601. Sealing body; 602. Raised ring; 603. Annular sliding sleeve; 604. Perforation; 700. Tail clip; 800. Magnetic clip. DETAILED DESCRIPTION

[0024] The embodiments of the present invention are described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in a variety of different ways as defined and covered below.

[0025] Figure 1 This is a schematic cross-sectional view of an optical fiber probe for water leakage monitoring according to a preferred embodiment of the present invention; Figure 2 The figure is a schematic diagram of the appearance and structure of an optical fiber probe for water leakage monitoring according to a preferred embodiment of the present utility model.

[0026] like Figure 1 and Figure 2As shown, the optical fiber probe for water leakage monitoring of this embodiment includes a probe body 100 for wrapping an optical fiber. The front end of the probe body 100 has a water-permeable section 101 with a radially reduced radial size. A counterweight body 200 and a floating plate 300 are provided on the water-permeable section 101. The counterweight body 200 is fixed to the free end of the water-permeable section 101 and is used to make the center of gravity of the probe body 100 at the front end. The floating plate 300 is slidably mounted on the water-permeable section 101 and is located between the probe body 100 and the counterweight body 200. The floating plate 300 is slidingly limited by the probe body 100 and the counterweight body 200. A water-permeable hole 102 is opened on the water-permeable section 101. The water-permeable hole 102 is located in the sliding area of the floating plate 300 and is arranged close to the counterweight body 200. The water-permeable hole 102 is connected to the area where the optical fiber is located in the inner cavity of the probe body 100. The optical fiber probe for water leakage monitoring of the present invention is provided with a counterweight, water permeability and water control functions on the basis of the existing optical fiber probe; the front end of the probe body 100 is set as a water permeable section 101 with a reduced radial size. Since the radial size of the water permeable section 101 is relatively small, the water permeable part, the water control part and the counterweight part are arranged on the water permeable section 101 without affecting the use of the optical fiber probe; a counterweight body 200 is arranged at the front end of the water permeable section 101 so that the optical fiber probe can keep its front end facing downward due to the action of gravity when it moves; at the same time, the water permeable part and the water control part are both arranged on the water permeable section 101 between the counterweight body 200 and the probe body 100. Specifically, a cleaning liquid is stored in the inner cavity of the probe body 100, and a cleaning liquid is stored between the counterweight body 200 and the probe body 1 00, a water-permeable hole 102 is formed in the water-permeable section 101 between the probe body and the counterweight 200, and a floating plate 300 is positioned adjacent to the counterweight 200. This allows the floating plate 300 to close the water-permeable hole 102 due to gravity when the front end is facing downward. Furthermore, external forces (for example, the buoyancy generated by the floating plate 300 upon entry into the liquid) can push the floating plate 300 to open the water-permeable hole 102, thereby enabling water permeation and control. This facilitates opening the water-permeable hole 102 as needed to communicate with the inner cavity of the probe body 100, thereby encouraging cleaning fluid in the inner cavity to flow toward the water-permeable hole 102 to clean the optical fiber within the probe body 100, and closing the water-permeable hole 102 to prevent contamination of the optical fiber. This achieves water-permeable and dust-proof functionality, addressing the shortcomings of existing fiber optic probes and meeting the practical needs of fiber optic water leak detection equipment. Optionally, the cleaning fluid stored in the inner cavity of the probe body 100 is an alcohol-based cleaning fluid.

[0027] like Figure 1 and Figure 2As shown, in this embodiment, the floating plate 300 includes a bottom plate 301 slidably arranged on the permeable section 101 and surrounding side plates 302 extending from the edges of the bottom plate 301 toward the probe body 100. The surrounding side plates 302 slide together with the outer side walls of the probe body 100. The floating plate 300, the permeable section 101 and the probe body 100 enclose a regulating chamber 400. The float plate 300 slides with the outer wall of the water permeable section 101 and the outer wall of the probe body 100 through the bottom plate 301 and the surrounding side plates 302, forming a double sliding fit, realizing the sliding limit of the float plate 300 and achieving a stable sliding relationship to control the opening and closing of the water permeable hole 102; the adjustment cavity 400 enclosed by the float plate 300, the water permeable section 101 and the probe body 100 provides space for the sliding of the float plate 300; the existence of the adjustment cavity 400 provides a free sliding space for the float plate 300, so that the float plate 300 can slide freely without external interference, more specifically, it can slide freely under the action of liquid buoyancy, thereby more effectively controlling the water permeable hole 102; due to the gravity of the float plate 300, when the optical fiber probe When the front end is facing downward, the float 300 will naturally close the water permeable hole 102 to prevent external contaminants from entering the inner cavity of the probe body 100; when the optical fiber needs to be cleaned, the float 300 can be pushed by external force to open the water permeable hole 102, and the inner cavity of the probe body 100 is connected to the water permeable hole 102 and the cleaning liquid is allowed to flow, thereby achieving the purpose of cleaning the optical fiber; this design enables the water permeable part, the water control part and the counterweight part to be compactly arranged on the water permeable section 101 without affecting the overall structure and use of the optical fiber probe, thereby maintaining the compactness and functionality of the optical fiber probe; through the design of the sliding limit and the adjustment cavity 400, precise control of the water permeable hole 102 of the optical fiber probe is achieved, while ensuring the compactness and functionality of the optical fiber probe, meeting the actual needs of water leakage monitoring equipment.

[0028] like Figure 1 and Figure 2 As shown, in this embodiment, the counterweight 200 is detachably connected to the free end of the permeable section 101 via threads. This design allows the user to easily install, replace, or remove the counterweight 200 as needed, allowing for arbitrary changes in the weight of the counterweight. The threaded connection provides a secure connection and also facilitates routine maintenance and repairs.

[0029] like Figure 1 and Figure 2As shown, in this embodiment, the rear end of the probe body 100 has a ring-shaped storage cavity 500, which is connected to the area where the optical fiber is located. Storage cavity 500 stores cleaning fluid and also provides a certain degree of protection for the optical fiber, reducing damage to the optical fiber from external impact or pressure, thereby improving the durability and reliability of the optical fiber probe. The ring-shaped storage cavity 500 can increase the structural stability of the probe body 100, especially when subjected to external environmental changes (such as temperature and pressure changes). The design of storage cavity 500 provides additional support and reduces structural problems caused by material expansion or contraction. Storage cavity 500 can be used to adjust the position of the optical fiber to adapt to different monitoring environments or requirements. Storage cavity 500 provides a relatively isolated environment for the optical fiber, reducing the impact of external contaminants or moisture on the optical fiber, thereby improving the stability and accuracy of the optical fiber probe.

[0030] like Figure 1 and Figure 2 As shown, in this embodiment, a sealing device 600 and a tail clip 700 are provided at the tail end of the probe body 100. The sealing device 600 is sealed and covered on the tail end of the probe body 100 and enclosed with the probe body 100 to form a storage cavity 500. The tail clip 700 is sleeved on the outside of the sealing device 600 and the probe body 100 and is threadedly connected to the outer wall surface of the probe body 100. The sealing device 600 is pressed and sealed on the probe body 100 through the tail clip 700. The design of the sealing device 600 and the tail clip 700 can ensure that the tail end of the probe body 100 is isolated from the external environment, preventing moisture, dust or other contaminants from entering the storage cavity 500 and the area where the optical fiber is located, thereby protecting the internal structure of the optical fiber probe and improving its reliability and durability; the tail clip 700 is connected to the outer wall surface of the probe body 100 by a thread, making the structure of the probe body 100 more stable and firm, and also convenient for detachable maintenance and replacement of the sealing device 600. When maintenance or replacement of the sealing device 600 is required, it can be easily disassembled and installed, simplifying maintenance work; the design of the tail clip 700 allows the tightening force of the sealing device 600 on the probe body 100 to be adjusted by adjusting the tightness of the thread, thereby adapting to different working environments and requirements; the threaded connection provides a reliable mechanical connection method, ensuring that the sealing device 600 can maintain a sealed state under various environmental conditions, preventing potential safety risks caused by poor sealing.

[0031] In this embodiment, a sealing ring is provided in the cavity enclosed by the sealing device 600 , the tail clip 700 and the probe body 100 . The primary function of a sealing ring is to form a seal between connectors, preventing the leakage of liquid or gas. By placing a sealing ring within the sealed cavity enclosed by the sealing device 600, the tail clip 700, and the probe body 100, it effectively prevents the external environment (such as moisture and dust) from affecting the probe interior, protecting the internal structure of the fiber optic probe and improving its reliability and durability. It also prevents leakage of cleaning fluid from the inner cavity of the probe body 100. During operation, the sealing ring is subject to both internal and external pressures. Proper design of its structure and dimensions ensures a good seal under varying pressures, a key aspect of its working principle. The sealing ring reduces friction and wear between components, extending the life of the probe. It is easy to disassemble and replace, simplifying maintenance and ensuring long-term stable operation of the probe. Due to its elastic deformation and the properties of its material, the sealing ring can return to its original shape after compression. This elastic deformation helps fill in minor irregularities on the contact surface, thereby improving the sealing effect. The design of the sealing ring is crucial to the sealing performance of a fiber optic probe. It not only improves the probe's protection but also enhances its adaptability to various environmental conditions and eases maintenance.

[0032] like Figure 1 As shown, in this embodiment, the sealing device 600 includes a sealing body 601. A protruding ring 602 for mating with the tail clip 700 is provided on the outer wall of the sealing body 601. An annular sliding sleeve 603 for slidingly mating with the outer wall of the storage cavity 500 is provided at one end of the sealing body 601 facing the storage cavity 500. Gaps are left between the inner wall of the annular sliding sleeve 603 and the inner wall of the storage cavity 500, as well as between the inner bottom of the annular sliding sleeve 603 and the end wall of the storage cavity 500, so that the storage cavity 500 is connected to the area where the optical fiber is located. The sealing body 601 cooperates with the tail clip 700, and the connection limit is achieved through the convex ring 602. Combined with the threaded connection method, it can ensure that the sealing device 600 is firmly fixed to the tail end of the probe body 100, preventing the external environment (such as moisture, dust, etc.) from entering the probe, thereby protecting the internal structure of the optical fiber probe; the design of the convex ring 602 allows the sealing device 600 to be easily installed and removed through the tail clip 700, facilitating maintenance and repair work; the annular sliding sleeve 603 adopts a sliding fit with the outer wall of the storage cavity 500, reducing friction and wear during relative movement and extending the service life of the probe.

[0033] like Figure 1 and Figure 2As shown, in this embodiment, the counterweight 200 , the floating plate 300 , the water-permeable section 101 , the probe body 100 , the sealing device 600 and the tail clip 700 are coaxially arranged. The coaxial arrangement helps maintain the structural symmetry of the entire fiber optic probe, which helps maintain the probe's stability and balance in water or other media. The coaxially arranged components can share loads, enhancing the mechanical stability of the entire probe and reducing deformation or damage caused by changes in the external environment. The coaxial design simplifies the probe's manufacturing and assembly process because all components are arranged along the same axis, making alignment and fixing easier. The coaxial arrangement of the counterweight 200 and the float 300 provides a more consistent and predictable response of the probe in water, which is important for accurate water leak detection. The coaxial arrangement optimizes the probe's hydrodynamic performance in water, reducing water resistance on the probe and making the probe more stable during underwater movement. The coaxial arrangement of the seal 600 and tail clip 700 helps ensure a more reliable seal between the tail end of the probe body 100 and the external environment, preventing the intrusion of moisture and contaminants. From an aesthetic perspective, the coaxially arranged components provide a neat and orderly appearance, which not only enhances the overall aesthetics of the product but also has a positive impact on the user's operating experience.

[0034] like Figure 1 As shown, in this embodiment, a perforation 604 is provided on the central axis of the sealing device 600 for the passage of an optical fiber. Perforation 604 provides a passage for the optical fiber to pass through the sealing device 600. This allows the optical fiber to extend from the probe body 100 while maintaining sealing performance, facilitating the connection of the optical fiber with other devices (such as sensors, monitoring equipment, etc.) and simplifying installation and wiring. The design of perforation 604 on the central axis of the sealing device 600 means that the sealing performance of the sealing device 600 will not be affected, or the impact will be negligible and insignificant when the optical fiber passes through. This design ensures the sealing integrity of the entire probe and prevents the sealing performance from being degraded due to the passage of the optical fiber.

[0035] like Figure 1 and Figure 2As shown, in this embodiment, the outer end of the sealing device 600 is provided with a magnetic clamp 800 that is sleeved over the optical fiber to protect the protruding optical fiber and seal the perforation 604. The magnetic clamp 800 is sleeved over the optical fiber to provide physical protection for the protruding optical fiber and prevent the optical fiber from being damaged or contaminated during transportation or use; the magnetic clamp 800 seals the perforation 604 to prevent moisture, dust or other contaminants from entering the probe through the perforation; the design of the magnetic clamp 800 allows the user to easily install and remove the sealing device 600, facilitating maintenance and repair work; through magnetic attraction, the magnetic clamp 800 can provide a stable sealing effect because it can fit tightly on the outer wall of the probe body 100, thereby ensuring no leakage; the design of the magnetic clamp 800 can adapt to different working environments and conditions, and can maintain good sealing performance whether in a dry environment or in a humid environment.

[0036] The water leakage detection device of this embodiment includes the above-mentioned optical fiber probe for water leakage monitoring.

[0037] During implementation, a dust-proof and water-permeable optical fiber probe is provided, which blocks the water inlet by the gravity of the floating plate 300, and floats up to open the water inlet after water leakage, so as to achieve the dust-proof and water-permeable function; it includes a magnetic clamp 800, a tail clamp 700, a sealing device 600, a probe body 100, a floating plate 300, and a counterweight to protect the optical fiber from breaking. A water-permeable hole 102 is provided at the lower end; in addition, it is equipped with an alcohol cleaning liquid supply device for coordinated use.

[0038] The counterweight is a metal block that helps the probe maintain a vertical state and supports the floating plate 300 when there is no water leakage.

[0039] The floating plate 300 is a lightweight object that is independent of the probe body 100 and can move up and down. When there is no water, the floating plate 300 falls down to cover the water inlet to achieve a dust-proof effect. When there is a water leak, the floating plate 300 floats up due to the buoyancy to achieve a water-permeable effect.

[0040] The probe body 100 has two functions: one is to wrap the optical fiber to prevent it from breaking; the other is to hold alcohol cleaning liquid. When the bare fiber needs to be cleaned, the cleaning liquid is pressurized by external force to flush the bare fiber through the water permeable hole 102. While cleaning, it also achieves a dust-proof effect to a certain extent.

[0041] The sealing device 600 is an iron metal part, which is assembled with the upper opening of the probe body 100 by putting a sealing ring on the metal part to seal the cleaning liquid.

[0042] The tail clip 700 has threads that match the threads of the probe body 100. After the two are assembled, the sealing device 600 is completely sealed.

[0043] The magnetic clamp 800 is a metal iron block and a magnet. The iron block is welded to the sealing device 600. When the optical fiber is connected to the probe body 100, it is fixed to the iron block with the magnet.

[0044] Example 1

[0045] A fiber optic probe for water leak monitoring includes a probe body 100, a floating plate 300, a counterweight 200, a tail clip 700, a sealing device 600, and a magnetic clamp 800. The probe body 100 has an opening at its rear end, which is sealed by the sealing device 600. The tail clip 700 further reinforces the sealing device 600, ensuring a complete seal and preventing any leakage or intrusion of foreign matter. The magnetic clamp 800, connected to the sealing device 600, secures the optical fiber, providing additional stability and convenient installation and removal. The floating plate 300 is mounted at the front end of the probe body 100 and precisely fixed to a predetermined position on the probe body 100. Finally, the counterweight 200, threadedly connected to the probe body 100, secures the entire structure, ensuring the floating plate 300 remains securely in place. The probe body 100 should be placed vertically with the counterweight 200 facing downward.

[0046] Example 2

[0047] The shape of the floating plate 300 does not necessarily need to be fixed. It must meet two requirements: when there's no water, the floating plate 300 descends to cover the water hole 102, effectively preventing dust; when there's a leak, the floating plate 300 rises due to buoyancy, ensuring water permeability. Therefore, a lightweight material should be used, with aerogel blocks currently being the most ideal. The shape can vary depending on the situation, but it must meet two requirements: when descending, its thickness should be sufficient to cover the water inlet, ensuring the probe's dust-proof function; and it should have sufficient surface area to receive the appropriate buoyancy required to float in the event of a leak.

[0048] The utility model discloses a dustproof and water-permeable optical fiber probe, which realizes the water-permeable and dust-proof functions, makes up for the shortcomings of existing optical fiber probes, and meets the actual needs of optical fiber water leakage detection equipment; it adopts a replaceable design, which solves the problems of inconvenient cleaning and difficult replacement in the existing technology.

[0049] Matters not covered in this utility model are known technologies.

[0050] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0051] The above-described embodiments merely represent several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the spirit of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

[0052] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An optical fiber probe for water leakage monitoring, characterized in that: The probe body (100) comprises a probe body (100) for wrapping an optical fiber, wherein the front end of the probe body (100) comprises a water-permeable section (101) with a radially reduced radial dimension. A counterweight (200) and a floating plate (300) are provided on the water permeable section (101). The counterweight (200) is fixed to the free end of the water permeable section (101) and is used to place the center of gravity of the probe body (100) at the front end. The floating plate (300) is slidably sleeved on the water permeable section (101) and is located between the probe body (100) and the counterweight (200). The floating plate (300) is slidably limited by the probe body (100) and the counterweight (200). A water permeable hole (102) is provided on the water permeable section (101). The water permeable hole (102) is located in the sliding area of the floating plate (300) and is arranged close to the counterweight body (200). The water permeable hole (102) is connected to the area where the optical fiber is located in the inner cavity of the probe body (100).

2. The optical fiber probe for water leakage monitoring according to claim 1, characterized in that: The floating plate (300) comprises a bottom plate (301) slidably arranged on the water-permeable section (101) and four side plates (302) extending from the edges of the bottom plate (301) toward the probe body (100). The surrounding side plates (302) are in sliding engagement with the outer side walls of the probe body (100). The floating plate (300), the water-permeable section (101) and the probe body (100) enclose and form an adjustment chamber (400).

3. The optical fiber probe for water leakage monitoring according to claim 2, characterized in that: The counterweight body (200) is detachably connected to the free end of the water-permeable section (101) via threads.

4. The optical fiber probe for water leakage monitoring according to any one of claims 1 to 3, characterized in that: The tail end of the probe body (100) has a storage cavity (500) arranged in a ring shape. The storage cavity (500) is in communication with the area where the optical fiber is located.

5. The optical fiber probe for water leakage monitoring according to claim 4, characterized in that: The tail end of the probe body (100) is provided with a sealing device (600) and a tail clip (700). The sealing device (600) is sealed and covered at the rear end of the probe body (100) and encloses the probe body (100) to form a storage cavity (500). The tail clip (700) is sleeved on the outside of the sealing device (600) and the probe body (100) and is threadedly connected to the outer wall surface of the probe body (100). The sealing device (600) is pressed and sealed on the probe body (100) through the tail clip (700).

6. The optical fiber probe for water leakage monitoring according to claim 5, characterized in that: A sealing ring is provided in the cavity enclosed by the sealing device (600), the tail clip (700) and the probe body (100).

7. The optical fiber probe for water leakage monitoring according to claim 5, characterized in that: The sealing device (600) comprises a sealing body (601), A convex ring (602) for cooperating with the tail clip (700) is provided on the outer wall of the sealing body (601), and an annular sliding sleeve (603) for slidingly cooperating with the outer wall of the storage cavity (500) is provided on one end of the sealing body (601) facing the storage cavity (500). Gaps are left between the inner wall surface of the annular sliding sleeve (603) and the inner wall surface of the storage cavity (500), and between the inner bottom surface of the annular sliding sleeve (603) and the end wall surface of the storage cavity (500), so that the storage cavity (500) is connected to the area where the optical fiber is located.

8. The optical fiber probe for water leakage monitoring according to any one of claims 5 to 7, characterized in that: The counterweight body (200), the floating plate (300), the water-permeable section (101), the probe body (100), the sealing device (600), and the tail clip (700) are coaxially arranged.

9. The optical fiber probe for water leakage monitoring according to any one of claims 5 to 7, characterized in that: A through hole (604) for the optical fiber to pass through is provided on the central axis of the sealing device (600); The outer end of the sealing device (600) is provided with a magnetic clamp (800) which is sleeved outside the optical fiber and is used to protect the protruding optical fiber and seal the perforation (604).

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