Temperature measurement early warning device of distributed optical fiber sensor

Abstract

The utility model relates to the technical field of optical fiber sensors, and discloses a temperature measurement early warning device of a distributed optical fiber sensor, which comprises a shell, an optical fiber sensor main body, a positioning sleeve, a sensing optical fiber and a moving mechanism. Wherein the optical fiber sensor main body is fixedly embedded in the shell, and the shell is provided with a storage groove for cooperatively placing the sensing optical fiber, so that the sensing optical fiber is stored and protected from being damaged and lost; the positioning sleeve is arranged in the groove wall of the storage groove in a sliding manner, and the sensing optical fiber can be fixedly arranged in the positioning sleeve in a penetrating manner, so that the sensing optical fiber is positioned; the moving mechanism is arranged between the positioning sleeve and the shell and used for moving the positioning sleeve so that part of the sensing optical fibers can stretch out of the storage groove, the sensing optical fibers can be rapidly taken out of the storage groove, the operation difficulty can be reduced, and the temperature measurement efficiency can be improved.

Description

Technical Field

[0001] This utility model relates to the field of fiber optic sensor technology, and in particular to a temperature measurement and early warning device using a distributed fiber optic sensor. Background Technology

[0002] Currently, fiber optic sensing technology, using optical fiber as the sensing medium, boasts numerous advantages such as strong resistance to electromagnetic interference, intrinsic safety, convenient installation, good concealment, and the ability to operate in harsh environments. It has been widely applied in various fields including industry, municipal transportation, aerospace, and the military. Meanwhile, distributed fiber optic sensors employ unique distributed fiber optic detection technology to measure or monitor the spatial distribution and constantly changing information along the fiber optic transmission path. By arranging the sensing fibers along the field, it can simultaneously obtain the spatial distribution and constantly changing information of the measured field, making it highly attractive for many industrial applications.

[0003] In related technologies, Chinese utility model patent CN218895866U discloses a temperature measurement device using a distributed optical fiber sensor. In use, the sensing optical fiber is inserted into a first rubber retaining ring on the upper surface of a hollow plate and a second rubber retaining ring on the upper surface of a telescopic plate. The connector at the end of the sensing optical fiber is inserted into a connection port on the optical fiber sensor body, thereby fixing the sensing optical fiber and preventing it from bending or being damaged. The temperature of the object being measured is then measured through the optical fiber sensor body and the sensing optical fiber. After the temperature measurement is completed, the sensing optical fiber is removed from inside the first and second rubber retaining rings. A lever is used to move the telescopic plate into the hollow plate, simultaneously moving the second rubber retaining ring into a notch. Rotating the hollow plate allows one end of the telescopic plate to be inserted into a slot, thus fixing the hollow plate and the telescopic plate in place.

[0004] Regarding the aforementioned technologies, certain problems still exist in actual operation: after the temperature measurement is completed, the sensing fiber is removed from the inside of the first and second rubber retainers and left idle on the outside for later testing and use, which can easily lead to damage or loss of the sensing fiber. Utility Model Content

[0005] The purpose of this invention is to provide a temperature measurement and early warning device for a distributed optical fiber sensor, which can store and protect the sensing optical fiber from damage and loss, and can quickly pick up and put away the sensing optical fiber, reducing the difficulty of operation and improving the temperature measurement efficiency.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A temperature monitoring and early warning device based on distributed fiber optic sensors includes:

[0008] The housing has a storage slot.

[0009] The fiber optic sensor body is fixedly embedded in the housing;

[0010] A positioning sleeve, which is slidably disposed within the wall of the storage slot;

[0011] The sensing optical fiber is fixedly inserted into the positioning sleeve and placed in the storage slot.

[0012] A moving mechanism is disposed between the positioning sleeve and the housing, for moving the positioning sleeve to allow a portion of the sensing optical fiber to extend out from the storage slot.

[0013] As an optional technical solution for the temperature measurement and early warning device of the distributed optical fiber sensor, a sliding hole communicating with the storage slot is provided on one side of the housing. The moving mechanism includes a moving slider and a connecting block. The moving slider is slidably disposed on the outer side wall of the housing, and the connecting block is slidably disposed in the sliding hole. The two ends of the connecting block are respectively fixedly connected to the moving slider and the positioning sleeve.

[0014] As an optional technical solution for the temperature measurement and early warning device of the distributed optical fiber sensor, the temperature measurement and early warning device of the distributed optical fiber sensor further includes a limiting component, which includes a limiting post and a limiting block. The limiting post is rotatably disposed on the outer side wall of the housing, and one end of the limiting block is fixedly disposed on the limiting post. A limiting groove is formed on the top of the movable slider, and the other end of the limiting block can be placed in the limiting groove.

[0015] As an optional technical solution for temperature measurement and early warning devices using distributed optical fiber sensors, a reset spring is provided between the bottom wall of the sliding hole and the connecting block.

[0016] As an optional technical solution for temperature measurement and early warning devices using distributed optical fiber sensors, a movable groove is provided on the side of the movable slider away from the connecting block, and several anti-slip particles are provided in the groove wall of the movable groove.

[0017] As an optional technical solution for temperature measurement and early warning devices using distributed optical fiber sensors, the inner wall of the positioning sleeve is provided with several damping rings, which can be clamped to the sensing optical fiber.

[0018] As an optional technical solution for temperature measurement and early warning devices using distributed optical fiber sensors, the bottom of the storage tank is provided with a protective sleeve, and the sensing head of the sensing optical fiber can be placed in the protective sleeve.

[0019] As an optional technical solution for the temperature measurement and early warning device of the distributed optical fiber sensor, the temperature measurement and early warning device of the distributed optical fiber sensor includes an optical fiber tube, which is placed in the storage slot. A plurality of the sensing optical fibers are placed inside the optical fiber tube, and the optical fiber tube is fixedly inserted into the positioning sleeve.

[0020] As an optional technical solution for temperature measurement and early warning devices using distributed optical fiber sensors, the bottom of the optical fiber tube is provided with several protective sleeves, and the sensing heads of the sensing optical fibers can be placed one by one in the protective sleeves.

[0021] As an optional technical solution for the temperature measurement and early warning device of the distributed optical fiber sensor, the top of the storage tank is provided with a sealing cover, and the sealing cover is sealed to the housing.

[0022] The beneficial effects of this utility model are:

[0023] This utility model provides a distributed fiber optic sensor temperature measurement and early warning device, comprising a housing, a fiber optic sensor body, a positioning sleeve, a sensing fiber, and a moving mechanism. The fiber optic sensor body is fixedly embedded within the housing. A storage slot is provided in the housing to store and protect the sensing fiber from damage or loss. The positioning sleeve is slidably disposed within the wall of the storage slot, allowing the sensing fiber to be fixedly inserted through it. The moving mechanism is located between the positioning sleeve and the housing, used to move the positioning sleeve to allow part of the sensing fiber to extend from the storage slot, enabling rapid removal of the sensing fiber from the storage slot, reducing operational difficulty, and improving temperature measurement efficiency. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of the temperature measurement and early warning device of the distributed optical fiber sensor provided in a specific embodiment of this utility model;

[0025] Figure 2 This is a partial cross-sectional view of the temperature measurement and early warning device of the distributed optical fiber sensor provided in a specific embodiment of this utility model;

[0026] Figure 3 This is a partial side view of the temperature measurement and early warning device of the distributed optical fiber sensor provided in a specific embodiment of this utility model.

[0027] In the picture:

[0028] 1. Housing; 11. Storage slot; 12. Sliding hole; 13. Protective sleeve;

[0029] 2. Fiber optic sensor body; 3. Sensing fiber; 4. Positioning sleeve; 41. Damping collar;

[0030] 5. Moving slider; 51. Moving groove; 52. Anti-slip particles; 53. Limiting groove;

[0031] 6. Connecting block; 7. Limiting post; 71. Limiting block; 8. Return spring; 9. Sealing cover. Detailed Implementation

[0032] 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 it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0033] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction 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.

[0034] 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.

[0035] In the description of this embodiment, the terms "upper," "lower," "right," and "left," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not 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. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0036] like Figure 1 and Figure 2As shown, this utility model discloses a temperature measurement and early warning device based on a distributed optical fiber sensor, including a housing 1, an optical fiber sensor body 2, a positioning sleeve 4, a sensing optical fiber 3, and a moving mechanism. The optical fiber sensor body 2 is fixedly embedded within the housing 1. A storage slot 11 is provided in the housing 1 to accommodate and protect the sensing optical fiber 3 from damage or loss. The positioning sleeve 4 is slidably disposed within the wall of the storage slot 11, allowing the sensing optical fiber 3 to be fixedly inserted through the positioning sleeve 4 for positioning. The moving mechanism is disposed between the positioning sleeve 4 and the housing 1, used to move the positioning sleeve 4 to allow part of the sensing optical fiber 3 to extend out of the storage slot 11, enabling quick removal of the sensing optical fiber 3 from the storage slot 11, reducing operational difficulty, and improving temperature measurement efficiency. Exemplarily, the optical fiber sensor body 2 can be detachably installed inside the housing 1.

[0037] Specifically, a protective sleeve 13 is installed at the bottom of the storage slot 11. This protective sleeve 13 cooperates with the sensing head of the sensing fiber 3. When the sensing fiber 3 is placed into the storage slot 11, the sensing head of the sensing fiber 3 can be inserted into the protective sleeve 13, so that the protective sleeve 13 effectively protects the sensing head of the sensing fiber 3. For example, the protective sleeve 13 is made of rubber.

[0038] Optionally, the temperature monitoring and early warning device of the distributed optical fiber sensor includes an optical fiber tube, which is placed in a storage slot 11. Several sensing optical fibers 3 are placed inside the optical fiber tube, and the optical fiber tube is fixedly inserted into a positioning sleeve 4. Multiple sensing optical fibers 3 can be stored in the temperature monitoring and early warning device of the distributed optical fiber sensor, serving as replacements for losses during the temperature measurement process, in case of unforeseen circumstances. Correspondingly, several protective sleeves 13 are provided at the bottom of the optical fiber tube, and the sensing heads of the sensing optical fibers 3 can be placed one by one inside the protective sleeve 13.

[0039] When it is necessary to measure the temperature of the object being tested, the sensing fiber 3 is taken out from the storage slot 11, and the connector of the sensing fiber 3 is inserted into the connection port of the fiber optic sensor body 2. The temperature of the object being tested is then measured through the fiber optic sensor body 2 and the sensing fiber 3.

[0040] In this embodiment, the positioning sleeve 4 is slidably installed within the wall of the storage slot 11, and the positioning sleeve 4 cooperates with the sensing optical fiber 3. Specifically, a plurality of damping rings 41 are also installed on the inner side wall of the positioning sleeve 4. These damping rings 41 can be locked together with the sensing optical fiber 3, so that the sensing optical fiber 3 can be stably installed within the positioning sleeve 4, thereby effectively stabilizing and protecting the sensing optical fiber 3. For example, the damping rings 41 can be made of flexible or elastic material, specifically rubber rings.

[0041] Additionally, refer to Figure 1 and Figure 2In this embodiment, the moving mechanism is located between the positioning sleeve 4 and the housing 1. The moving mechanism can drive the positioning sleeve 4 to move up and down, so as to move the connector of the sensing fiber 3 out of the storage slot 11, thereby making it easier for the testing personnel to quickly take out the sensing fiber 3 from the positioning sleeve 4.

[0042] Specifically, a sliding hole 12 communicating with the storage groove 11 is provided on one side of the housing 1. The moving mechanism includes a sliding slider 5 and a connecting block 6. The sliding slider 5 is slidably installed on the outer side wall of the housing 1, and the connecting block 6 is slidably disposed in the sliding hole 12. One side of the connecting block 6 is fixedly connected to one side of the sliding slider 5, and the other side of the connecting block 6 is fixedly connected to the outer side wall of the positioning sleeve 4.

[0043] When the sliding slider 5 is moved, the sliding slider 5 drives the connecting block 6 to move up and down in the sliding hole 12, which in turn drives the positioning sleeve 4 to move up and down. This causes the positioning sleeve 4 to drive the sensing fiber 3 to move up and down in the storage slot 11, making it easier to move the sensing fiber 3 out of the top of the storage slot 11 so that the inspection personnel can take away the sensing fiber 3; or it makes it easier to move the sensing fiber 3 into the interior of the storage slot 11 so as to store and protect the sensing fiber 3.

[0044] In addition, specifically as follows Figure 3 As shown, a movable groove 51 is provided on the surface of the movable slider 5 away from the connecting block 6. This movable groove 51 fits into the fingers of the inspector, so that the inspector can easily push the movable slider 5. Furthermore, several anti-slip particles 52 are installed inside the groove wall of the movable groove 51, which can effectively prevent slippage.

[0045] Better, such as Figure 2 and Figure 3 As shown, a return spring 8 is installed between the bottom wall of the sliding hole 12 and the connecting block 6. The return spring 8 has good elasticity. When an upward pushing force is applied to the moving slider 5, the moving slider 5 drives the connecting block 6 and the positioning sleeve 4 to move upward, so that the connecting block 6 stretches the return spring 8. When the pushing force applied to the moving slider 5 is removed, the return spring 8 will elastically reset, so as to drive the connecting block 6 and the positioning sleeve 4 to move downward, thereby enabling the moving slider 5 to automatically reset.

[0046] At the same time, the elastic action of the return spring 8 can effectively limit the connection block 6 and the positioning sleeve 4; and can also effectively buffer the connection block 6 and the positioning sleeve 4.

[0047] Specifically, the temperature monitoring and early warning device of the distributed optical fiber sensor also includes a limiting component, which includes a limiting post 7 and a limiting block 71. The limiting post 7 is rotatably mounted on the outer wall of the housing 1 and is perpendicular to the housing 1. One end of the limiting block 71 is fixedly mounted on the limiting post 7, and a limiting groove 53 is formed on the top of the movable slider 5. The limiting groove 53 cooperates with the limiting block 71. When the limiting post 7 rotates, the other end of the limiting block 71 is placed in the limiting groove 53. The limiting block 71 and the limiting groove 53 engage, locking the movable slider 5, thereby effectively limiting the movable slider 5, and allowing the positioning sleeve 4 to stably store the sensing optical fiber 3 in the storage slot 11.

[0048] Preferably, refer to Figure 2 and Figure 3 In this embodiment, a sealing cover 9 is installed on the top of the storage slot 11. The sealing cover 9 is sealed to the housing 1, thus sealing the top of the storage slot 11. This not only provides a sealing protection for the sensing optical fiber 3 but also prevents external dust from entering the storage slot 11. The sealing cover 9, positioning sleeve 4, and protective sleeve 13 work together at the top, middle, and bottom to provide comprehensive and effective storage protection for the sensing optical fiber 3, further reducing the possibility of damage or loss of the sensing optical fiber 3.

[0049] The implementation principle of the temperature measurement and early warning device of the distributed optical fiber sensor in this application embodiment is as follows: when it is necessary to store and protect the sensing optical fiber 3, open the sealing cover 9, insert the sensing optical fiber 3 into the positioning sleeve 4 along the storage groove 11, so that the sensing end of the sensing optical fiber 3 cooperates with the protective sleeve 13, thereby storing the entire sensing optical fiber 3 into the inside of the storage groove 11, and finally close the sealing cover 9 to seal the top of the storage groove 11.

[0050] When it is necessary to remove the sensing fiber 3 from the storage slot 11, open the sealing cover 9, and then rotate the limiting block 71 to move the limiting block 71 out of the limiting slot 53 to unlock the moving slider 5. Then, apply force to push the moving slider 5 upward. The moving slider 5 drives the connecting block 6 to move upward in the sliding hole 12, so that the connecting block 6 drives the positioning sleeve 4 to move upward, thereby causing the positioning sleeve 4 to drive the sensing fiber 3 to move upward, so that the connector at the end of the sensing fiber 3 extends out of the top of the storage slot 11, which makes it easy for the inspection personnel to remove the sensing fiber 3.

[0051] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A temperature monitoring and early warning device using a distributed optical fiber sensor, characterized in that, include: The housing (1) has a storage slot (11); The fiber optic sensor body (2) is fixedly embedded in the housing (1); Positioning sleeve (4), which is slidably disposed within the wall of the storage slot (11); The sensing fiber (3) is fixedly inserted into the positioning sleeve (4) and placed in the storage slot (11). A moving mechanism is disposed between the positioning sleeve (4) and the housing (1) for moving the positioning sleeve (4) to allow a portion of the sensing optical fiber (3) to extend out from the storage slot (11).

2. The temperature monitoring and early warning device for distributed optical fiber sensors according to claim 1, characterized in that, The housing (1) has a sliding hole (12) on one side that communicates with the storage slot (11). The moving mechanism includes a sliding slider (5) and a connecting block (6). The sliding slider (5) is slidably disposed on the outer side wall of the housing (1). The connecting block (6) is slidably disposed in the sliding hole (12). The two ends of the connecting block (6) are respectively fixedly connected to the sliding slider (5) and the positioning sleeve (4).

3. The temperature monitoring and early warning device for distributed optical fiber sensors according to claim 2, characterized in that, The temperature measurement and early warning device of the distributed optical fiber sensor also includes a limiting component, which includes a limiting post (7) and a limiting block (71). The limiting post (7) is rotatably disposed on the outer side wall of the housing (1), and one end of the limiting block (71) is fixedly disposed on the limiting post (7). A limiting groove (53) is opened on the top of the movable slider (5), and the other end of the limiting block (71) can be placed in the limiting groove (53).

4. The temperature monitoring and early warning device for distributed optical fiber sensors according to claim 2, characterized in that, A return spring (8) is provided between the bottom wall of the sliding hole (12) and the connecting block (6).

5. The temperature monitoring and early warning device for distributed optical fiber sensors according to claim 2, characterized in that, The movable slider (5) has a movable groove (51) on the side away from the connecting block (6), and a plurality of anti-slip particles (52) are provided in the groove wall of the movable groove (51).

6. The temperature monitoring and early warning device for a distributed optical fiber sensor according to claim 1, characterized in that, The inner wall of the positioning sleeve (4) is provided with a plurality of damping rings (41), which can be locked with the sensing optical fiber (3).

7. The temperature monitoring and early warning device for a distributed optical fiber sensor according to claim 1, characterized in that, The bottom of the storage slot (11) is provided with a protective sleeve (13), and the sensing head of the sensing fiber (3) can be placed in the protective sleeve (13).

8. The temperature monitoring and early warning device for a distributed optical fiber sensor according to claim 1, characterized in that, The temperature measurement and early warning device of the distributed optical fiber sensor includes an optical fiber tube, which is placed in the storage slot (11). Several sensing optical fibers (3) are placed inside the optical fiber tube, and the optical fiber tube is fixedly inserted into the positioning sleeve (4).

9. The temperature monitoring and early warning device for a distributed optical fiber sensor according to claim 8, characterized in that, The bottom of the optical fiber tube is provided with several protective sleeves (13), and the sensing head of the sensing optical fiber (3) can be placed in the protective sleeves (13) one by one.

10. The temperature monitoring and early warning device of the distributed optical fiber sensor according to any one of claims 1-9, characterized in that, The top of the storage tank (11) is provided with a sealing cover (9), which is sealed to the housing (1).

Images