A novel dense grating belt temperature measurement system temperature rising experiment device

Abstract

The utility model relates to a novel dense grating optical cable temperature rising experimental device belongs to coal mine safety experimental equipment technical field. Including the pipe body of both ends setting the plugging, set up the optical cable perforation for making the optical cable pass through on the plugging, the pipe body and the plugging are opened one side along the axial section and form the opening, integrally set wide edge sealing strip at the opening, set up the sealing strip at the inside face of wide edge sealing strip, open the water injection hole for filling water on the opening, cover and set up the heat preservation layer on the outside surface of pipe body. The utility model is dense grating optical cable temperature rising experimental device, can carry out the heating, positioning experiment to the downhole fiber grating optical cable, the water storage capacity of temperature rising experimental device is big, and the heat maintaining capacity is strong, and the optical cable is put in simple and convenient.

Description

Technical Field

[0001] This utility model relates to a novel temperature measurement system for dense grating belts, which belongs to the technical field of coal mine safety experimental equipment. Background Technology

[0002] Coal mine fires are one of the five major hazards in mines. Given the current reliance on manual monitoring of fires in mine roadways, the development of real-time, accurate, and stable automatic temperature monitoring and alarm systems for roadways is urgently needed to ensure safe production. Currently, some systems utilize dense fiber optic grating array temperature monitoring and early warning equipment to monitor roadway temperature in real time, providing timely warnings and alarms for potential safety hazards. This improves the accuracy of operational fault prevention, avoids serious accidents, and ensures safe equipment operation and mine safety.

[0003] A "dense fiber Bragg grating array" refers to a dense array of special fiber Bragg gratings with extremely low reflectivity formed within a single optical fiber, typically with a peak reflectivity below -20 dB. Due to its very low reflectivity, fiber Bragg gratings with the same period can penetrate each other. Based on time-division multiplexing technology, multiple fiber Bragg grating sensing units can be multiplexed on the same optical fiber. Fiber Bragg grating arrays combine the sensing advantages of gratings with the positioning advantages of optical time-domain technology, enabling real-time monitoring of long-distance engineering projects.

[0004] The adoption of new technologies for monitoring ambient temperature requires the location and area of ​​the monitoring points to be marked, and the accuracy of temperature measurement and temperature rise to be calibrated and tested. Due to the special environmental requirements of underground coal mines, conventional electric heating and open flame heating methods are not feasible. Utility Model Content

[0005] The purpose of this invention is to provide a novel device for conducting optical cable heating experiments using safe hot water as a heat source.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A novel dense grating belt temperature measurement system heating experimental device includes a tube body with plugs at both ends, and optical cable perforations for optical cables to pass through the plugs; the tube body and plugs are axially cut open on one side to form an opening; a wide-edge seal is integrally installed at the opening; a sealing strip is installed on the inner side of the wide-edge seal; a water injection hole is opened at the opening for adding water; and a heat insulation layer is installed on the outer surface of the tube body.

[0007] A further improvement to the technical solution of this utility model is that the optical cable perforation on the seal is located at the center of the seal.

[0008] A further improvement to the technical solution of this utility model is that the water injection hole is a round hole or a square hole.

[0009] A further improvement to the technical solution of this utility model is that several reinforcing strips are provided on the outer side of the wide-edge seal.

[0010] A further improvement to the technical solution of this utility model is that a reinforcing strip is provided on the other side of the wide-edge seal corresponding to the radial direction.

[0011] Due to the adoption of the above technical solution, the technical effects achieved by this utility model are as follows: This invention relates to a heating experimental device for dense fiber optic grating cables. It can perform heating and positioning experiments on fiber optic grating cables underground. The device has a large water storage capacity, strong heat retention capacity, and the cable insertion is simple and convenient. By utilizing commonly used plastic tubes for structural design, the experimental device is easy to manufacture and use. Attached Figure Description

[0012] Figure 1 This is the front view of this utility model; Figure 2 This is an internal sectional view of the present invention; Figure 3 This is a top view of the present invention; Figure 4 This is a schematic diagram of the wide-edge sealing strip and sealing strip of this utility model; The components include: 1. Pipe body; 2. Optical cable perforation; 3. Opening; 4. Wide edge seal; 5. Sealing strip; 6. Water injection hole; 7. Reinforcing strip. Detailed Implementation

[0013] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0014] In the description of this utility model, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, 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.

[0015] This invention relates to a novel temperature-measuring experimental device for a dense grating belt temperature measurement system, used for temperature measurement experiments on temperature-measuring optical cables.

[0016] like Figure 1 , Figure 2 , Figure 3 , Figure 4As shown, the device includes a tube body 1, with plugs at both ends to allow the tube body to hold liquid water. The tube body 1 is typically made of PVC pipe. Through-holes are provided in the plugs as optical fiber perforations, allowing the optical fiber to pass through these perforations and enter the interior of the tube body 1 during heating experiments. In specific implementations, preferably, the optical fiber perforation 2 on the plug is located at the center of the plug.

[0017] An insulation layer is usually installed on the outer surface of the tube body 1 to improve its insulation performance, which can maintain the temperature for a longer period of time after hot water for the experiment is injected.

[0018] The assembly formed by the tube body 1 and the sealing is cut open along the axial direction from one side to form an opening 3. This opening 3 is mainly used to insert the temperature measuring optical cable.

[0019] Furthermore, a wide-edge seal 4 is integrally formed at the opening 3, extending outward from the opening 3 to form the wide-edge seal 4. Even further, a sealing strip 5 is provided on the inner side of the wide-edge seal 4. A water injection hole 6 is provided on the opening 3, through which water can be injected into the interior of the pipe body 1. In specific implementations, the water injection hole 6 is either round or square.

[0020] In use, first insert the temperature-measuring optical cable into the tube 1 through opening 3, ensuring both ends of the cable are positioned within the cable perforations. Then, bring the wide-edge sealing strip 4 at opening 3 close to seal it. The clamp can then be used to tighten the opening 3, forming a seal.

[0021] In specific implementation, further and preferentially, several reinforcing strips 7 are provided on the outer side of the wide-edge seal 4. As shown in the figure, two reinforcing strips 7 are provided on the outer side of each of the two wide-edge seals 4.

[0022] Furthermore, a reinforcing strip 7 is also provided on the other side of the wide edge seal 4 in the radial direction, and the reinforcing strip 7 provided corresponds to the reinforcing strip 7 on the wide edge seal 4.

[0023] The fiber optic cable is inserted into the device through the opening, the device opening is closed, and it is tightened with a clamp. Hot water at 80-100℃ is added from the top opening. The hot water is maintained at 50-60℃ for 10 minutes, which meets the requirements for positioning and temperature rise experiments of dense fiber optic cables in coal mines.

[0024] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A novel temperature-raising experimental device for a dense grating belt temperature measurement system, characterized in that: The tube (1) is sealed at both ends, and a fiber optic cable through hole (2) is provided on the seal for the fiber optic cable to pass through. The tube (1) and the seal are cut open along one side along the axial direction to form an opening (3). A wide-edge seal (4) is integrally provided at the opening (3). A sealing strip (5) is provided on the inner side of the wide-edge seal (4). A water injection hole (6) is opened on the opening (3) for adding water. An insulation layer is provided on the outer surface of the tube (1).

2. The novel dense grating belt temperature measurement system heating experimental device according to claim 1, characterized in that: The optical cable perforation (2) on the blockage is located at the center of the blockage.

3. The novel dense grating belt temperature measurement system heating experimental device according to claim 1, characterized in that: The water injection hole (6) is either round or square.

4. The novel dense grating belt temperature measurement system heating experimental device according to claim 1, characterized in that: Several reinforcing strips (7) are provided on the outer side of the wide-edge seal (4).

5. The novel dense grating belt temperature measurement system heating experimental device according to claim 4, characterized in that: A reinforcing strip (7) is provided on the other side of the wide-edge seal (4) in the radial direction.

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