Grating fiber temperature measuring device

Abstract

The utility model relates to the technical field of temperature detection equipment, in particular to grating fiber temperature measurement equipment, which comprises a bottom plate, a hinge rod is connected onto the bottom plate, a cover plate is connected onto the hinge rod, a semicircular lower cavity is arranged between the bottom plate and the cover plate, and a fiber is arranged on the lower cavity. The side wall of the lower cavity of the cover plate is fixedly provided with two buckles which are symmetrical left and right, the lower cavity of the bottom plate is provided with two sets of clamping grooves which are symmetrical left and right, the clamping grooves correspond to the buckles up and down, the middle end of the optical fiber is engraved with gratings which are evenly distributed, and the upper end of the bottom plate is connected with two top covers which are symmetrical left and right. The top covers are installed at the left end and the right end of the bottom plate in advance, the bottom plate, the top covers and the cover plate are prevented from freely sliding on the optical fiber, the stability of the bottom plate is improved, then the buckles are clamped with the clamping grooves and the clamping blocks are clamped with the clamping cavities at the cover plate, the buckles limit left-right sliding of the optical fiber, the position stability of the optical fiber at the grating is improved, and the cover plate can be opened. And damage detection on the grating is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of temperature detection equipment, in particular to a grating optical fiber temperature measurement equipment. Background Art

[0002] A temperature sensor is a sensor that can sense temperature and convert it into a usable output signal. There are many types of temperature sensors, and fiber Bragg grating temperature sensors are one of them. Temperature sensors based on fiber Bragg grating technology use wavelength coding technology to eliminate the influence of light source power fluctuations and system losses, and are suitable for long-term monitoring.

[0003] Fiber Bragg Grating temperature sensors need to be packaged during use. The main function of packaging technology is to protect and enhance the sensitivity of fiber Bragg Grating to temperature. Currently, the commonly used packaging methods include substrate type, tube type and polymer packaging methods. Taking substrate type as an example, the existing temperature sensor of this type includes substrate and optical fiber. Bragg gratings are engraved on the packaging part of the optical fiber. The substrate is provided with a mounting groove, and the optical fiber is installed in the mounting groove. The existing installation method easily causes the optical fiber to loosen, resulting in inaccurate measurement results of the fiber Bragg Grating temperature sensor, and the sealed installation makes it difficult to detect damage to the grating. Utility Model Content

[0004] The purpose of the utility model is to provide a grating optical fiber temperature measuring device to overcome the above-mentioned defects in the prior art.

[0005] According to the utility model, a grating optical fiber temperature measurement device comprises a base plate, the base plate is connected with a hinged rod, the hinged rod is located at the middle end of the base plate, the hinged rod is connected with a cover plate, a semicircular lower cavity is opened between the base plate and the cover plate, an optical fiber is arranged on the lower cavity, two left-right symmetrical buckles are fixed on the side wall of the lower cavity on the cover plate, two groups of left-right symmetrical grooves are opened on the lower cavity on the base plate, the grooves correspond to the buckles up and down, and the middle end of the optical fiber is engraved with The gratings are evenly distributed, the upper end of the bottom plate is connected with two left-right symmetrical top covers, the left and right ends of the cover plate are fixed with card blocks, the upper ends of the two top covers are provided with card cavities, the card cavities correspond to the card blocks up and down, the bottom plate and the top covers are connected with a threaded groove with an opening facing upward and symmetrically arranged front and back, each of the threaded grooves is threadedly connected with a threaded member, the lower end of the top cover is provided with an upper cavity, and an anti-slip pad is provided between the upper cavity and the lower cavity corresponding to each other up and down, and the anti-slip pad is in close contact with the optical fiber.

[0006] The beneficial effects of the utility model are:

[0007] By pre-installing the top cover at the left and right ends of the bottom plate, the anti-skid pads on the bottom plate and the top cover are in close contact with the circumference of the optical fiber, thereby preventing the bottom plate, the top cover and the cover plate from sliding freely on the optical fiber, thereby improving the stability of the bottom plate. Subsequently, the cover plate is connected with the card slot by the buckle, and the card block is connected with the card cavity. The buckle limits the left and right sliding of the optical fiber, thereby improving the position stability at the grating, thereby reducing the detection error caused by the random movement of the grating during the detection process, and the cover plate can be opened to facilitate the damage detection of the grating. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a schematic diagram of the appearance of the utility model;

[0009] Figure 2 This utility model Figure 1 A schematic diagram of a top view structure;

[0010] Figure 3 This utility model Figure 1 A schematic diagram of the front view structure of

[0011] Figure 4 This utility model Figure 1 A side view schematic diagram of the structure;

[0012] Figure 5 This utility model Figure 1 A local enlarged schematic diagram of the middle grating;

[0013] Figure 6 This utility model Figure 3 Schematic cross-sectional view of AA in the figure;

[0014] In the figure:

[0015] 10. Bottom plate; 11. Top cover; 12. Threaded part; 13. Optical fiber; 14. Cover plate; 15. Grating; 16. Card slot; 17. Buckle; 18. Card cavity; 19. Card block; 20. Articulated rod; 21. Upper cavity; 22. Threaded groove; 23. Lower cavity; 24. Anti-slip pad. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] It should be noted that when an element is said to be "fixed to" another element, it can be directly on the other element or there can be an intermediate element. When an element is said to be "connected to" another element, it can be directly connected to the other element or there can be an intermediate element at the same time:

[0018] Embodiment 1:

[0019] Reference Figure 1-Figure 6 According to an embodiment of the utility model, a grating optical fiber temperature measuring device includes a base plate 10, a hinge rod 20 is connected to the base plate 10, the hinge rod 20 is located at the middle end of the base plate 10, a cover plate 14 is connected to the hinge rod 20, a semicircular lower cavity 23 is opened between the base plate 10 and the cover plate 14, an optical fiber 13 is arranged on the lower cavity 23, two left-right symmetrical buckles 17 are fixed on the side wall of the lower cavity 23 on the cover plate 14, two groups of left-right symmetrical card grooves 16 are opened on the lower cavity 23 on the base plate 10, the card grooves 16 correspond to the buckles 17 up and down, and the middle end of the optical fiber 13 is provided. The grating 15 is evenly distributed, and two symmetrical top covers 11 are connected to the upper end of the bottom plate 10. Blocks 19 are fixed to the left and right ends of the cover plate 14. A card cavity 18 is opened at the upper end of the two top covers 11. The card cavity 18 corresponds to the block 19 up and down. A thread groove 22 with an opening upward and symmetrically arranged front and back is opened between the bottom plate 10 and the top cover 11. A threaded member 12 is threadedly connected to each thread groove 22. An upper cavity 21 is opened at the lower end of the top cover 11. An anti-skid pad 24 is arranged between the upper cavity 21 and the lower cavity 23 corresponding to each other up and down. The anti-skid pad 24 is in close contact with the optical fiber 13.

[0020] The bottom plate 10 is placed at the lower end of the optical fiber 13, so that the side wall of the lower cavity 23 opened on the bottom plate 10 abuts against the outer periphery of the optical fiber 13, the bottom plate 10 is extended left and right, the screw members 12 are respectively connected to the screw grooves 22 at the left and right ends of the bottom plate 10, and the top cover 11 is placed on the upper end of the bottom plate 10, the screw member 12 passes through the top cover 11 and is threadedly connected to the screw groove 22 at the bottom plate 10, and the two top covers 11 are fixedly set on the bottom plate 10, and the anti-skid pad 24 is set between the bottom plate 10 and the top cover 11, so that the anti-skid pad 24 is closely attached to the peripheral surface of the optical fiber 13 to prevent the displacement of the bottom plate 10, and then at the grating 15, as shown in Figure 5 As shown, the cover plate 14 is pushed downward to rotate downward with the hinge rod 20 as the rotation axis, and abuts against the card slot 16 through the buckle 17. The buckle 17 is frictionally engaged in the card slot 16 and abuts against the left and right parts of the optical fiber 13. The card block 19 cooperates with the card cavity 18 up and down, and the card block 19 is clamped on the card cavity 18, thereby completing the fixation of the cover plate 14.

[0021] It is clear to those skilled in the art that various modifications to the above embodiments can be made without departing from the overall spirit and concept of the present invention. All of them fall within the protection scope of the present invention. The protection scheme of the present invention shall be subject to the claims attached to the present invention.

Claims

1. A grating optical fiber temperature measurement device, comprising a base plate (10), characterized in that: The bottom plate (10) is connected with a hinge rod (20), and the hinge rod (20) is connected with a cover plate (14). A semicircular lower cavity (23) is provided between the bottom plate (10) and the cover plate (14), and an optical fiber (13) is provided on the lower cavity (23). Two left-right symmetrical buckles (17) are fixedly provided on the side wall of the lower cavity (23) on the cover plate (14). Two groups of left-right symmetrical grooves (16) are provided on the lower cavity (23) on the bottom plate (10), and the grooves (16) correspond to the buckles (17) in upper and lower directions. The middle end of the optical fiber (13) is engraved with a uniformly distributed grating (15), and the upper end of the bottom plate (10) is connected with two left-right symmetrical top covers (11).

2. A grating optical fiber temperature measurement device according to claim 1, characterized in that: The left and right ends of the cover plate (14) are both fixedly provided with a clamping block (19), and the upper ends of the two top covers (11) are both provided with a clamping cavity (18), and the clamping cavity (18) corresponds to the clamping block (19) in upper and lower directions.

3. A grating optical fiber temperature measurement device according to claim 2, characterized in that: An upper cavity (21) is provided at the lower end of the top cover (11), and an anti-skid pad (24) is provided between the upper cavity (21) and the lower cavity (23) corresponding to each other, and the anti-skid pad (24) is in close contact with the optical fiber (13).

4. A grating optical fiber temperature measurement device according to claim 3, characterized in that: The bottom plate (10) and the top cover (11) are connected to each other with a thread groove (22) opening upward and arranged symmetrically in front and back, and each thread groove (22) is threadedly connected with a threaded member (12).

5. A grating optical fiber temperature measurement device according to claim 4, characterized in that: The hinge rod (20) is located at the middle end of the base plate (10).

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