Distributed optical fiber temperature measuring device

Abstract

The utility model provides a distributed optical fiber temperature measuring device, and relates to the technical field of optical fiber temperature measurement. Comprising a temperature measuring device body, a temperature sensor body, a mounting plate and a special-shaped plate, a spring is arranged on the outer side of a guide rod, a limiting frame is movably arranged on the outer side of the guide rod, a clamping rod is arranged in a rotating ring in a threaded penetrating mode, and two sets of clamping frames are arranged on the outer side of the special-shaped plate. The special-shaped plate is pressed downwards, the gap between the special-shaped plate and the mounting plate is adjusted, supports with different thicknesses can be conveniently inserted between the mounting plate and the special-shaped plate, a clamping rod in a rotating ring is rotated and moved downwards, the angle of the rotating ring is changed through a bearing, the clamping rod is inserted into a U-shaped clamping frame, then the clamping rod is rotated and moved upwards in the reverse direction, and the clamping rod is clamped in the U-shaped clamping frame. The clamping rod is used for carrying out threaded pulling-up on the clamping frame, positioning installation of the temperature measuring device body can be achieved, the structure is simple and practical, disassembly and installation are easy and convenient, and the installation efficiency of the temperature measuring device body is effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of optical fiber temperature measuring devices, specifically a kind of distributed optical fiber temperature measuring device, belong to optical fiber temperature measuring technical field. BACKGROUND

[0002] Distributed optical fiber temperature measuring device is based on the principle of optical time domain reflectometry (OTDR) and the Raman scattering effect of optical fiber, laser pulse and optical fiber molecule interact, multiple scattering occurs, wherein Raman scattering is due to the thermal vibration of optical fiber molecules, it can produce a light longer than the wavelength of light source-Stokes light and a light shorter than the wavelength of light source-Anti-Stokes light, the Anti-Stokes light intensity in optical fiber changes due to the modulation of external temperature, the ratio of Anti-Stokes and Stokes provides absolute indication of temperature, using this principle to realize distributed measurement along optical fiber temperature field, distributed temperature sensor is applied in power system, petrochemical industry, transportation and building fire protection.

[0003] At present, since the distributed temperature measuring device mounting plate and support are mostly connected by a large number of bolts, when the distributed temperature measuring device is removed from the support, it is necessary to use tools to loosen the bolts one by one, especially in the case of a large number of bolts, this process will be very time-consuming, for the scene that needs to be frequently disassembled and installed, such as equipment maintenance or overhaul, this connection method will seriously affect work efficiency; Therefore, we provide a kind of distributed optical fiber temperature measuring device to solve the above problems. UTILITY MODEL CONTENT

[0004] To solve the above problems, the utility model provides a kind of distributed optical fiber temperature measuring device to solve the above problems, and the specific technical scheme is:

[0005] A kind of distributed optical fiber temperature measuring device, including temperature measuring device main body, temperature sensor main body, mounting plate and special-shaped plate, two groups of mounting plate are fixedly arranged on the outside of temperature measuring device main body, two groups of swing frame are rotatably arranged in the inside of mounting plate, guide rod is arranged in the inside of swing frame, spring is arranged on the outside of guide rod, limit frame is movably arranged on the outside of guide rod, and the inside of limit frame is in contact with the top end of spring, special-shaped plate is movably located below mounting plate, two groups of bearings are arranged on the outside of mounting plate, rotating ring is penetrated and arranged in the inside of bearing, clamping rod is penetrated and arranged in the inside of rotating ring by screw thread, two groups of clamping frames are arranged on the outside of special-shaped plate.

[0006] Preferably, the connecting end of the temperature measuring device main body is provided with a connecting port, and the connecting port is provided with a plurality of groups, and the temperature sensor main body is connected to the connecting port.

[0007] Preferably, one side of the temperature measuring device body is provided with a plurality of threaded barrels, the inside of the threaded barrel is threadedly connected with a connecting barrel, one end of the connecting barrel is provided with a soft rubber head, and the soft rubber head is made of rubber material.

[0008] Preferably, the special-shaped plate is an "L"-shaped plate, and the inner side of the special-shaped plate is provided with a protective pad made of rubber material.

[0009] Preferably, the clamping frame is an "U"-shaped plate, and the clamping rod is movably inserted into the clamping frame.

[0010] Preferably, the inside of the special-shaped plate is provided with two groups of installation grooves, and the limiting frame is arranged in the installation groove.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] 1. In the utility model, the special-shaped plate and the clamping rod are arranged, the gap between the special-shaped plate and the mounting plate is adjusted by pressing the special-shaped plate, different thicknesses of the support can be inserted between the mounting plate and the special-shaped plate, the protective pad made of rubber material can increase the friction between the special-shaped plate and the support, after the special-shaped plate and the mounting plate are clamped on the support, the clamping rod is rotated and moved downward, the rotating ring is rotatably supported by the bearing, the angle of the rotating ring is changed, the clamping rod is inserted into the "U"-shaped clamping frame, then the clamping rod is reversely rotated and moved upward, the clamping frame is threadedly lifted by the clamping rod, the positioning and installation of the temperature measuring device body can be realized, the structure is simple and practical, and the temperature measuring device body can be conveniently disassembled and installed, and the installation efficiency of the temperature measuring device body is improved.

[0013] 2. In the utility model, the connecting barrel and the soft rubber head are arranged, the connecting barrel and the threaded barrel are threadedly connected and assembled, the soft rubber head made of rubber material is arranged outside the connecting port, the unused connecting port is covered and dustproof, and the soft rubber head can be conveniently disassembled and replaced by threadedly disassembling the connecting barrel. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a whole structure schematic view of the utility model;

[0015] Figure 2 It is a whole side structure schematic view of the utility model;

[0016] Figure 3 It is an explosion structure schematic view of the connecting barrel and the soft rubber head of the utility model;

[0017] Figure 4 It is an explosion structure schematic view of the swinging frame and the limiting frame of the utility model.

[0018] BRIEF DESCRIPTION OF DRAWINGS:1, temperature measuring device main body;2, connecting port;3, threaded barrel;4, clamping rod;5, connecting barrel;6, soft rubber head;7, temperature sensor main body;8, mounting plate;9, swing frame;10, guide rod;11, spring;12, special-shaped plate;13, mounting groove;14, limiting frame;15, protective pad;16, clamping frame;17, bearing;18, rotating ring. DETAILED DESCRIPTION

[0019] The utility model makes further explanation in combination with the drawings.

[0020] Please refer to Figure 1 , Figure 2 , Figure 3 And Figure 4 , a kind of distributed optical fiber temperature measuring device;

[0021] It includes temperature measuring device main body 1, temperature sensor main body 7, mounting plate 8 and special-shaped plate 12, two groups of mounting plate 8 are arranged at the outside of temperature measuring device main body 1, the inside of mounting plate 8 is rotatably provided with two groups of swing frame 9, the inside of swing frame 9 is provided with guide rod 10, the outside of guide rod 10 is provided with spring 11, the outside of guide rod 10 movably is provided with limiting frame 14, and the inside of limiting frame 14 is in contact with the top end of spring 11, the outside of mounting plate 8 is provided with two groups of bearing 17, the inside of bearing 17 is penetrated and is provided with rotating ring 18, the inside of rotating ring 18 is screwed and is provided with clamping rod 4, the outside of special-shaped plate 12 is provided with two groups of clamping frame 16, special-shaped plate 12 is movably located below mounting plate 8, the inside of special-shaped plate 12 is provided with protective pad 15, and protective pad 15 adopts rubber material, clamping frame 16 is " U " shaped board, clamping rod 4 is movably inserted into clamping frame 16, the inside of special-shaped plate 12 is penetrated and is provided with two groups of mounting groove 13, limiting frame 14 is arranged in the inside of mounting groove 13.

[0022] Two groups of installation plates 8 are fixedly arranged outside the temperature measuring device main body 1, the swing frame 9 is rotatably arranged inside the installation plate 8 through a shaft body, the swing frame 9 can be adjusted in angle inside the installation plate 8, the installation groove 13 arranged inside the special-shaped plate 12 is arranged in the installation groove 13 through the limiting frame 14, and the limiting frame 14 is movably sleeved outside the guide rod 10 through the limiting frame 14, so that the special-shaped plate 12 of the “L” shaped plate is connected below the installation plate 8, the limiting frame 14 can be moved downwards inside the swing frame 9 and outside the guide rod 10 by pressing the special-shaped plate 12 downwards, the spring 11 outside the guide rod 10 is pressed and deformed, the gap between the special-shaped plate 12 and the installation plate 8 is adjusted, different thicknesses of the bracket are inserted between the installation plate 8 and the special-shaped plate 12, the protection pad 15 made of rubber material can increase the friction between the special-shaped plate 12 and the bracket, when the special-shaped plate 12 and the installation plate 8 are clamped on the bracket, the clamping rod 4 inside the rotating ring 18 is rotated and moved downwards, the rotating ring 18 is rotatably supported by the bearing 17, the angle of the rotating ring 18 is changed, the clamping rod 4 is inserted into the “U” shaped clamping frame 16, then the clamping rod 4 is reversely rotated and moved upwards, the clamping frame 16 is threadedly lifted by the clamping rod 4, the positioning and installation of the temperature measuring device main body 1 can be realized, the structure is simple and practical, the disassembly and installation are relatively simple, and the installation efficiency of the temperature measuring device main body 1 is effectively improved.

[0023] Please refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 4 , a distributed optical fiber temperature measuring device;

[0024] The connecting end of the temperature measuring device main body 1 is provided with a connecting port 2, and the connecting port 2 is provided with a plurality of groups, the temperature sensor main body 7 is connected to the connecting port 2, one side of the temperature measuring device main body 1 is provided with a plurality of threaded cylinders 3, the threaded cylinder 3 is internally threadedly connected with a connecting cylinder 5, one end of the connecting cylinder 5 is provided with a soft rubber head 6, and the soft rubber head 6 is made of rubber material.

[0025] The temperature measuring device main body 1 is a main component of a distributed optical fiber temperature measuring device, and the temperature measuring device main body 1 is based on the optical time domain reflection (OTDR) principle and the Raman scattering effect of the optical fiber. Laser pulses interact with optical fiber molecules, resulting in multiple scattering. Raman scattering is due to the thermal vibration of optical fiber molecules, which produces a longer wavelength light than the light source - Stokes light and a shorter wavelength light than the light source - Anti-Stokes light. The Anti-Stokes light intensity in the optical fiber changes due to the modulation of the external temperature, and the Anti-Stokes to Stokes ratio provides an absolute indication of the temperature. This principle is used to realize distributed measurement of the temperature field along the optical fiber. The temperature sensor main body 7 includes a connector, a wire and an optical fiber probe. The connector is inserted into the connection port 2 of the temperature measuring device main body 1, and the other end of the connector is connected with the wire. The other end of the wire is connected with the optical fiber probe. The temperature sensor main body 7 is used for temperature measurement operation on the required temperature measurement part.

[0026] The threaded barrel 3 is positioned outside the connection port 2 and is assembled with the inner wall of the threaded barrel 3 through the threaded connection of the connecting barrel 5. The soft rubber head 6 made of rubber material can be arranged outside the connection port 2 to cover and prevent dust from entering the unused connection port 2. The soft rubber head 6 can be easily disassembled and replaced by threaded disassembly through the connecting barrel 5. When the temperature sensor main body 7 connector needs to be connected with the connection port 2, the connector can be connected with the connection port 2 by passing through the cross-shaped opening in the soft rubber head 6.

[0027] The electrical equipment in the present application is a common electrical equipment in the prior art, and the type or internal structure thereof will not be described in detail. It can also be replaced by other power sources.

[0028] The technical principle of the utility model is described above in combination with specific embodiments. These descriptions are only for explaining the principle of the utility model, and cannot be interpreted as limiting the protection scope of the utility model in any way. Based on the above explanation, those skilled in the art can easily think of other specific embodiments of the utility model without creative labor, and these embodiments will fall within the protection scope of the claims of the utility model.

Claims

1. A distributed optical fiber temperature measuring device comprising a temperature measuring device main body (1), a temperature sensor main body (7), a mounting plate (8) and a profiled plate (12), characterized in that: Two groups of mounting plates (8) are fixedly arranged outside the temperature measuring device body (1), two groups of swing frames (9) are rotatably arranged inside the mounting plates (8), guide rods (10) are arranged inside the swing frames (9), springs (11) are arranged outside the guide rods (10), limiting frames (14) are movably arranged outside the guide rods (10), the inner side of the limiting frame (14) is in contact with the top end of the spring (11), the special-shaped plate (12) is movably arranged below the mounting plate (8), two groups of bearings (17) are arranged outside the mounting plate (8), rotating rings (18) are arranged inside the bearings (17), clamping rods (4) are screwedly arranged inside the rotating rings (18), and two groups of clamping frames (16) are arranged outside the special-shaped plate (12).

2. The distributed fiber optic temperature sensing device of claim 1, wherein: The connecting end of the temperature measuring device body (1) is provided with a connecting port (2), and the connecting port (2) is provided with a plurality of groups.

3. The distributed fiber optic temperature sensing device of claim 1, wherein: One side of the temperature measuring device body (1) is provided with a plurality of threaded cylinders (3), the threaded cylinders (3) are internally and threadedly connected with connecting cylinders (5), one end of the connecting cylinder (5) is provided with a soft rubber head (6), and the soft rubber head (6) is made of rubber material.

4. The distributed fiber temperature sensing device of claim 1, wherein: The special-shaped plate (12) is an "L" shaped plate, the inner side of the special-shaped plate (12) is provided with a protective pad (15), and the protective pad (15) is made of rubber material.

5. The distributed fiber temperature sensing device of claim 1, wherein: The clamping frame (16) is a "U" shaped plate, and the clamping rod (4) is movably inserted into the clamping frame (16).

6. The distributed fiber temperature sensing device of claim 1, wherein: Two groups of mounting grooves (13) are formed inside the special-shaped plate (12), and the limiting frame (14) is arranged inside the mounting groove (13). Two groups of mounting grooves (13) are formed inside the special-shaped plate (12), and the limiting frame (14) is arranged inside the mounting groove (13).

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