Coal mine optical fiber temperature measuring device

Abstract

The application relates to the technical field of optical fiber temperature measuring devices, in particular to a coal mine optical fiber temperature measuring device which comprises a cable, the outer surface of the cable is provided with a plurality of temperature sensing optical fibers, and the outer side of the cable is provided with a first connecting frame and a second connecting frame. The application can place each temperature sensing optical fiber on the two sides of the cable, then install the first connecting frame and the corresponding second connecting frame, in the process, the first connecting frame and the second connecting frame clamp the cable and preliminarily limit the temperature sensing optical fibers on the two sides of the cable, at the moment, rotating the rotating wheel drives the corresponding screw rod to rotate, at the moment, the screw rod moves horizontally towards the cable along the corresponding first connecting rod and second connecting rod, and drives the corresponding clamping plate to clamp the temperature sensing optical fiber, thereby achieving the effect that the device can increase the redundancy of the optical fiber sensing line through the fixation of two temperature sensing optical fibers.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of optical fiber temperature measuring devices, in particular to a coal mine optical fiber temperature measuring device. BACKGROUND

[0002] Coal mine refers to a place rich in coal resources, which is generally divided into underground coal mine and open-pit coal mine. When the coal seam is far from the ground surface, a roadway is generally excavated underground to mine coal, which is an underground coal mine. When the coal seam is very close to the ground surface, the ground surface soil layer is directly stripped to excavate coal, which is an open-pit coal mine. The distributed optical fiber temperature measuring system is also called optical fiber temperature measurement, which realizes temperature monitoring according to the light time domain reflection principle and the sensitive effect of Raman scattering on temperature.

[0003] Through retrieval, the patent application No. CN221685704U discloses a novel coal mine underground distributed optical fiber temperature measuring device, which comprises a cable, the cable is located on the inner side of the clamping frame a, the clamping frame a is rotationally connected with the clamping frame b through the rotating rod, the clamping frame b is fixedly connected with the elastic sheet, the elastic sheet is fixedly connected with the clamping block on the outer side, the clamping block is snap-connected with the clamping groove, the clamping groove is arranged on the right side of the clamping frame a, the clamping frame b is located on the outer side of the temperature sensing optical fiber, the temperature sensing optical fiber comprises a protective layer, a mesh cloth, a winding sheet, a steel bar, a reinforcing layer, an inner layer and an optical fiber, the winding sheet is bonded with the mesh cloth on the outer surface, the winding sheet is fixedly connected with the steel bar, and the steel bar is located on the outer side of the reinforcing layer. The clamping frame a and the clamping frame b can fix the temperature sensing optical fiber on the cable, and are convenient to disassemble and assemble. The mesh cloth, the winding sheet and the reinforcing layer can improve the strength and toughness of the temperature sensing optical fiber as a whole, and avoid damage after being gnawed by mice.

[0004] For the related technology in the above, the inventors find that the following defects exist: the above-mentioned scheme can fix the temperature sensing optical fiber on the cable through the clamping frame a and the clamping frame b, and is convenient to disassemble and assemble; the mesh cloth, the winding sheet and the reinforcing layer can improve the strength and toughness of the temperature sensing optical fiber as a whole, and avoid damage after being gnawed by mice. However, the device cannot increase the redundancy of the optical fiber sensing line. In the process of temperature measurement of the cable, a double optical fiber backup system is adopted. When one of the optical fibers fails, the other optical fiber can still work normally to ensure the continuity of temperature monitoring. If the redundancy of the optical fiber sensing line cannot be increased, the temperature measuring optical fiber is easily damaged, which may cause inaccurate results. CONTENT OF THE UTILITY MODEL

[0005] In order to increase the redundancy of the optical fiber sensing line, the application provides a coal mine optical fiber temperature measuring device.

[0006] The coal mine optical fiber temperature measuring device provided by the application adopts the technical scheme that: a cable is provided with a plurality of temperature sensing optical fibers on the outer surface thereof, a first connecting frame and a second connecting frame are arranged on the outer side of the cable, two screw rods are threadedly connected to the inner walls of the first connecting frame and the second connecting frame, a clamping plate is rotatably connected to the end of each of the two screw rods that are close to each other, the outer surface of each clamping plate is slidably connected to the corresponding first connecting frame and second connecting frame, a rotating wheel is fixedly connected to the end of each of the two screw rods that are away from each other, and the outer surface of each clamping plate is clamped with the corresponding temperature sensing optical fiber.

[0007] Optionally, two clamping grooves are formed in the outer surface of the first connecting frame, and two elastic clamping plates are fixedly connected to the outer surface of the second connecting frame, and the outer surface of each elastic clamping plate is clamped with the corresponding clamping groove.

[0008] Optionally, a heat shrink tube is arranged on the outer surface of the cable, and the inner wall of the heat shrink tube is wrapped around the cable.

[0009] Optionally, four fixing grooves are formed in the side of the first connecting frame and the second connecting frame that are close to each other, and a connecting rod is slidably connected to the inner wall of each fixing groove in the second connecting frame.

[0010] Optionally, a spring is sleeved on the outer surface of each connecting rod, one end of each spring close to the first connecting frame is fixedly connected to the corresponding connecting rod, and the other end is fixedly connected to the corresponding second connecting frame.

[0011] Optionally, a mesh cloth layer is fixedly connected to the outer surface of each temperature sensing optical fiber, and a corrosion-resistant layer is fixedly connected to the outer surface of the mesh cloth layer.

[0012] Optionally, a wear-resistant layer is fixedly connected to the outer side of each corrosion-resistant layer, and the outer surface of each wear-resistant layer is fixedly connected to the corresponding heat shrink tube.

[0013] In summary, the application has the following beneficial technical effects:

[0014] 1. The utility model discloses a cable, temperature sensing optical fiber, first connecting frame, second connecting frame, screw rod, clamping plate, rotating wheel and other components are arranged, each temperature sensing optical fiber is placed on the both sides of the cable, then the first connecting frame is installed with the corresponding second connecting frame, in this process, the first connecting frame and the second connecting frame can clamp the cable, and can preliminarily limit the temperature sensing optical fiber on the both sides of the cable, at this time, rotating the rotating wheel, the rotating wheel can drive the corresponding screw rod to rotate, at this time, the screw rod can move along the corresponding first connecting rod and second connecting rod horizontally towards the direction of the cable, and the corresponding clamping plate is pushed to clamp the temperature sensing optical fiber, thereby achieving the effect that the device can increase the redundancy of the optical fiber sensing line through the fixation of two temperature sensing optical fibers.

[0015] 2. The utility model discloses through set up heat shrink tube, mesh cloth layer, wear -resisting layer, corrosion -resistant layer etc. component, through the setting of heat shrink tube can be wrapped to cable and two temperature sensing optical fiber, by this can carry out the preliminary protection to cable and temperature sensing optical fiber, then through the setting of mesh cloth layer and wear -resisting layer can be more solid, sealed to temperature sensing optical fiber to optical fiber sensing part Package, the setting of corrosion -resistant layer can reduce the corrosion that temperature sensing optical fiber receives, and further reaches the device can through heat shrink tube, mesh cloth layer, wear -resisting layer, corrosion -resistant layer etc. to temperature sensing optical fiber more solid, sealed package and the protection effect of protection. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is cable structure schematic diagram in the embodiment of the application;

[0017] Figure 2 It is whole structure schematic diagram in the embodiment of the application;

[0018] Figure 3 It is second connecting frame structure schematic diagram in the embodiment of the application;

[0019] Figure 4 It is temperature sensing optical fiber structure schematic diagram in the embodiment of the application.

[0020] Reference signs: 1, cable;2, temperature sensing optical fiber;3, mesh cloth layer;4, corrosion -resistant layer;5, wear -resisting layer;6, heat shrink tube;7, first connecting frame;8, second connecting frame;9, screw rod;10, runner;11, clamping plate;12, elastic card board;13, card slot;14, connecting rod;15, fixed groove;16, spring. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings Figures 1-4 The application is further explained.

[0022] The embodiment of the application discloses a coal mine optical fiber temperature measuring device. As shown in Figure 1 , Figure 2 The outer surface of the cable 1 is provided with a heat shrink tube 6, the inner wall of the heat shrink tube 6 is wrapped and fixedly connected with the cable 1, the heat shrink tube 6 is sleeved on the cable 1, and then a hot air gun is used for heating, so that the heat shrink tube 6 shrinks to wrap the cable 1, so that the cable 1 can be protected by the wrapping of the heat shrink tube 6 to prevent the cable 1 from being damaged due to friction.

[0023] Please refer to Figure 4The outer surface of the cable 1 is provided with a plurality of temperature sensing optical fibers 2, the outer surface of each temperature sensing optical fiber 2 is fixedly connected with a mesh cloth layer 3, the outer surface of the mesh cloth layer 3 is fixedly connected with a corrosion-resistant layer 4, the temperature sensing optical fiber 2 is provided in multiple sections and is arranged on the left and right sides of the cable 1, the structure of the mesh cloth can be customized according to the purpose, and most mesh cloths use chemical fibers such as polyester as raw materials, so the mesh cloth has high elasticity and excellent moisture absorption performance.

[0024] Please refer to Figure 4 The outer side of each corrosion-resistant layer 4 is fixedly connected with a wear-resistant layer 5, the outer surface of each wear-resistant layer 5 is fixedly connected with a corresponding heat shrink tube 6, the corrosion-resistant layer 4 is a type of optical cable specially designed for harsh environments, and its main feature is that it can resist various chemical substances, salt spray, acid and alkali, and other corrosive environments, and is suitable for special scenes such as chemical plants, oceans, underground, and mines.

[0025] Please refer to Figure 1 , Figure 2 , Figure 3 The outer side of the cable 1 is provided with a first connecting frame 7 and a second connecting frame 8, the first connecting frame 7 and the second connecting frame 8 are arranged between two adjacent temperature sensing optical fibers 2 on the same side, the inner walls of the first connecting frame 7 and the second connecting frame 8 are both threadedly connected with two screw rods 9, the ends of the two screw rods 9 that are close to each other are both rotationally connected with a clamping plate 11, by rotating the screw rod 9, the screw rod 9 will move horizontally along the corresponding first connecting frame 7 and second connecting frame 8, at this time, by rotating the screw rod 9, the corresponding clamping plate 11 will be pushed to move horizontally towards the corresponding temperature sensing optical fiber 2, so that the clamping plate 11 can quickly clamp the temperature sensing optical fiber 2.

[0026] Please refer to Figure 1 , Figure 3 The outer surface of the first connecting frame 7 is provided with two clamping grooves 13, the outer surface of the second connecting frame 8 is fixedly connected with two elastic clamping plates 12, the outer surface of each elastic clamping plate 12 is clamped with a corresponding clamping groove 13, through the clamping of the elastic clamping plate 12 and the corresponding clamping groove 13, the first connecting frame 7 and the second connecting frame 8 can be quickly fixed during installation, and in this process, the elastic clamping plate 12 will first be stretched and then reset under the action of its elastic force, and through the insertion of the elastic clamping plate 12 and the corresponding clamping groove 13, the first connecting frame 7 and the second connecting frame 8 can be quickly fixed, and through the first connecting frame 7 and the second connecting frame 8, the cable 1 and the two temperature sensing optical fibers 2 can be quickly fixed.

[0027] Please refer to Figure 1 , Figure 3The outer surface of each clamping plate 11 is in sliding connection with the corresponding first connecting frame 7 and second connecting frame 8, the side of the first connecting frame 7 and the second connecting frame 8 close to each other is provided with four fixing grooves 15, and the two clamping plates 11 can slide horizontally along the corresponding first connecting frame 7 and second connecting frame 8.

[0028] Please refer to Figure 3 The inner wall of the fixing groove 15 in each second connecting frame 8 is in sliding connection with a connecting rod 14, the outer surface of each connecting rod 14 is sleeved with a spring 16, one end of each spring 16 close to the first connecting frame 7 is fixedly connected with the corresponding connecting rod 14, and the other end is fixedly connected with the corresponding second connecting frame 8, and each connecting rod 14 can slide horizontally along the corresponding fixing groove 15, in the process of installing the first connecting frame 7 and the second connecting frame 8, the connecting rod 14 is inserted into the fixing groove 15 of the first connecting frame 7, in this process, the first connecting frame 7 extrudes the connecting rod 14, at this time, the spring 16 is compressed, when the first connecting frame 7 and the second connecting frame 8 are disassembled, the spring 16 pushes them to separate quickly under the action of the elastic force.

[0029] Please refer to Figure 1 、 Figure 3 The end of the two screw rods 9 away from each other is fixedly connected with a rotating wheel 10, the outer surface of each clamping plate 11 is clamped with the corresponding temperature sensing optical fiber 2, the corresponding screw rod 9 is rotated by rotating the rotating wheel 10, the clamping plate 11 moves horizontally towards the corresponding temperature sensing optical fiber 2, and the clamping plate 11 is clamped and fixed with the corresponding temperature sensing optical fiber 2.

[0030] The implementation principle of the coal mine optical fiber temperature measuring device provided in the embodiments of the present application is as follows: first, the first connecting frame 7 and the second connecting frame 8 are installed together, in the process, the elastic clamping plate 12 is clamped with the corresponding clamping groove 13, the elastic clamping plate 12 is first opened, and is reset under the action of the elastic force, and the first connecting frame 7 and the second connecting frame 8 can be quickly fixed through the insertion between the elastic clamping plate 12 and the corresponding clamping groove 13, at this time, the connecting rod 14 is inserted into the fixed groove 15 in the first connecting frame 7, then the first connecting frame 7 extrudes the connecting rod 14, at this time, the spring 16 is compressed, when the first connecting frame 7 and the second connecting frame 8 are disassembled, the spring 16 pushes them to quickly separate under the action of the elastic force, then the two temperature sensing optical fibers 2 are inserted into the gap in the first connecting frame 7 and the second connecting frame 8, then the rotating wheel 10 is rotated, the rotating wheel 10 drives the corresponding screw rod 9 to rotate, at this time, the screw rod 9 moves horizontally along the corresponding first connecting frame 7 and the second connecting frame 8, and pushes the corresponding clamping plate 11 to move horizontally towards the corresponding temperature sensing optical fiber 2 and clamps the temperature sensing optical fiber 2, finally, the heat shrink tube 6 is sleeved, and a hot air gun is used to heat it to wrap the cable 1 and the temperature sensing optical fiber 2.

[0031] The above are preferred embodiments of the present application, and do not limit the protection scope of the present application, therefore: all equivalent changes made according to the structure, shape, principle of the present application should be covered in the protection scope of the present application.

Claims

1. A coal mine optical fibre temperature measuring device comprising a cable (1) characterised in that: The outer surface of the cable (1) is provided with several temperature sensing optical fibers (2), the outer side of the cable (1) is provided with a first connecting frame (7) and a second connecting frame (8), the inner wall of the first connecting frame (7) and the second connecting frame (8) is threadedly connected with two screw rods (9), the end of the two screw rods (9) close to each other is rotatably connected with a clamping plate (11), the outer surface of each clamping plate (11) is slidably connected with the corresponding first connecting frame (7) and second connecting frame (8), and the end of the two screw rods (9) away from each other is fixedly connected with a rotating wheel (10). The outer surface of each clamping plate (11) is clamped with the corresponding temperature sensing optical fiber (2).

2. The coal mine optical fiber temperature measuring device according to claim 1, characterized in that: The outer surface of the first connecting frame (7) is provided with two clamping grooves (13), and the outer surface of the second connecting frame (8) is fixedly connected with two elastic clamping plates (12). The outer surface of each elastic clamping plate (12) is clamped with the corresponding clamping groove (13).

3. The coal mine fiber temperature measuring device according to claim 1, characterized in that: The outer surface of the cable (1) is provided with a heat shrink tube (6), and the inner wall of the heat shrink tube (6) is wrapped with the cable (1) fixedly connected.

4. The coal mine fiber temperature measuring device according to claim 2, characterized in that: The side close to each other of the first connecting frame (7) and the second connecting frame (8) is provided with four fixed grooves (15), and the inner wall of each fixed groove (15) in the second connecting frame (8) is slidably connected with a connecting rod (14).

5. The coal mine optical fiber temperature measuring device according to claim 4, characterized in that: The outer surface of each connecting rod (14) is sleeved with a spring (16), one end of each spring (16) close to the first connecting frame (7) is fixedly connected with the corresponding connecting rod (14), and the other end is fixedly connected with the corresponding second connecting frame (8).

6. The coal mine fiber temperature measuring device according to claim 1, characterized in that: The outer surface of each temperature sensing optical fiber (2) is fixedly connected with a mesh cloth layer (3), and the outer surface of the mesh cloth layer (3) is fixedly connected with a corrosion-resistant layer (4).

7. The coal mine optical fiber temperature measuring device according to claim 6, characterized in that: The outer side of each corrosion-resistant layer (4) is fixedly connected with a wear-resistant layer (5), and the outer surface of each wear-resistant layer (5) is fixedly connected with the corresponding heat shrink tube (6).

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