Combined sensing optical cable heating test device

Abstract

The utility model discloses a combined type sensing optical cable heating testing device which is made of thermal insulation materials and comprises at least one pipe joint, a main body of the pipe joint is of a split structure and is provided with an upper pipe piece and a lower pipe piece, the upper pipe piece and the lower pipe piece are buckled in a concave-convex mode and locked through a bolt I, and flanges are arranged at the two ends of the upper pipe piece and the lower pipe piece. A heating wire extending along the whole length of the lower segment is arranged on the inner side of the lower segment, a digital display type temperature sensor is arranged on the outer side of the upper segment, a probe of the digital display type temperature sensor is arranged on the inner side of the upper segment, flanges between adjacent segment sections are connected through a bolt II, cover plates are connected to the flanges at the two ends of the device, and the cover plates are connected to the outer side of the lower segment. The lower part of the cover plate is provided with an optical cable clamping groove. By adopting a multi-section combined structure, the heating device can be suitable for various heating lengths; by adopting an up-and-down split combined structure, the use is convenient, and the optical cable is not easy to damage. And the heat preservation device is simple in structure, high in repeated utilization rate, safe, reliable and excellent in heat preservation effect.

Description

Technical Field

[0001] The utility model belongs to the technical field of security, and in particular relates to a combined sensor optical cable heating test device. Background Art

[0002] In the field of geotechnical engineering and various structural health and safety monitoring, higher and higher requirements are put forward for the monitoring accuracy, coverage, spatial resolution, intelligent data acquisition and other indicators of temperature, strain, micro-vibration and other signals. In recent years, various types of optical fiber sensing technologies have been paid close attention by researchers and users in the field of monitoring at home and abroad due to their characteristics of shielding electromagnetic interference, radio frequency interference, low transmission attenuation, explosion-proof and high stability.

[0003] Among them, the sensor optical cable can conduct real-time online monitoring of the ambient temperature changes near the optical cable, eliminate fire accidents in the bud, and truly prevent them before they happen. It is widely used in municipal integrated pipe corridors, pipelines, tunnels, cables, petroleum and petrochemicals, coal mines and other industries.

[0004] Before the sensor optical cable is used for temperature monitoring, it is necessary to calibrate the temperature of the installed sensor optical cable in order to calibrate the temperature display and position positioning functions of the sensor optical cable. The existing optical cable heating test uses the method of wrapping the optical cable and the heating rod with thermal insulation cotton, which has the disadvantages of being inconvenient, short heating length, and easy damage to the optical cable. Utility Model Content

[0005] In view of the problems existing in the prior art, the utility model provides a combined sensing optical cable heating test device, which is easy to use, not easy to damage the optical cable, and can be applied to various heating lengths.

[0006] The utility model is implemented as follows: a combined sensing optical cable heating test device, which is made of thermal insulation material and includes at least one pipe segment. The main body of the pipe segment adopts a split structure and is provided with an upper and lower pipe segment. The upper pipe segment and the lower pipe segment are buckled and locked with bolts I, and flanges are provided at both ends. A heating wire extending along the entire length of the lower pipe segment is provided on the inner side of the lower pipe segment, and a digital temperature sensor is provided on the outer side of the upper pipe segment. The probe of the digital temperature sensor is arranged on the inner side of the upper pipe segment. The flanges between adjacent pipe segments are connected by bolts II. Cover plates are connected to the flanges at both ends of the device, and optical cable slots are provided at the lower part of the cover plates.

[0007] A handle is provided on the outer side of the upper tube sheet.

[0008] The utility model has the advantages and technical effects: by adopting a multi-section combined structure, it can be applied to a variety of heating lengths; by adopting an upper and lower split combined structure, it is convenient to use and not easy to damage the optical cable. In addition, the utility model has a simple structure, a high reusability, is safe and reliable, and has a better insulation effect than the current practice. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a structural schematic diagram of the utility model;

[0010] Figure 2 It is a structural schematic diagram of a single pipe segment of the utility model;

[0011] Figure 3 It is a schematic diagram of the lower structure of the utility model;

[0012] Figure 4 This is a schematic diagram of the cover structure of the utility model.

[0013] In the figure, 1 is a handle; 2 is a digital temperature sensor; 3 is a cover plate; 4 is an optical cable slot; 5 is a flange; and 6 is a heating wire. DETAILED DESCRIPTION

[0014] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail in combination with the embodiments below. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not used to limit the utility model.

[0015] See also Figure 1 to Figure 4 A combined sensing optical cable heating test device is made of insulation material and includes at least one pipe segment. The main body of the pipe segment adopts a split structure and is provided with an upper and lower pipe segment. The upper pipe segment and the lower pipe segment are fastened with concave and convex parts and locked with bolts I. Flanges 5 are provided at both ends. A heating wire 6 extending along the entire length of the lower pipe segment is provided on the inner side of the lower pipe segment. A digital temperature sensor 2 is provided on the outer side of the upper pipe segment. The probe of the digital temperature sensor 2 is arranged on the inner side of the upper pipe segment. The flanges between adjacent pipe segments are connected by bolts II. Cover plates 3 are connected to the flanges at both ends of the device, and optical cable slots 4 are provided at the lower part of the cover plate 3.

[0016] In this embodiment, in order to facilitate the movement of the device, a handle 1 is provided on the outer side of the upper pipe segment.

[0017] The method of using the utility model is carried out according to the following steps:

[0018] Step S1, determining the number of pipe sections according to the set heating length.

[0019] Step S2, placing the sensor optical cable to be tested into the lower pipe segment of the pipe section arranged side by side.

[0020] Step S3, buckle and fix the upper pipe segment of the pipe segment to the corresponding lower pipe segment, and complete the connection between adjacent pipe segments.

[0021] Step S4, fixing the cover plate at both ends of the device and clamping it on the sensor optical cable.

[0022] Step S5, the heating wire and the digital temperature sensor are powered on and operated.

[0023] Step S6, reading the internal temperature of the device through a digital temperature sensor, and adjusting the power of the heating wire so that the internal temperature of the device reaches a set value.

[0024] Step S7: After the test is completed, the power supply of the heating wire and the digital temperature sensor is cut off, the device is removed from the optical cable, and the device is moved to another test position. Step S1 and step S6 are repeated.

[0025] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A combined sensor optical cable heating test device, characterized in that: The device is made of heat-insulating material and includes at least one pipe segment. The main body of the pipe segment adopts a split structure and is provided with upper and lower pipe segments. The upper and lower pipe segments are buckled with concave and convex parts and locked with bolts I. Flanges are provided at both ends. A heating wire extending along the entire length of the lower tube segment is provided on the inner side of the lower tube segment, and a digital temperature sensor is provided on the outer side of the upper tube segment, wherein the probe of the digital temperature sensor is provided on the inner side of the upper tube segment. The flanges between adjacent pipe sections are connected by bolts II. The flanges at both ends of the device are connected with cover plates, and the lower part of the cover plates is provided with optical cable clamping grooves.

2. The combined sensing optical cable heating test device according to claim 1 is characterized in that: A handle is provided on the outer side of the upper tube sheet.

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