Mining optical fiber roof separation layer sensor convenient to connect

Abstract

The utility model belongs to the field of separation layer sensors, and relates to a mining optical fiber roof separation layer sensor convenient to connect, a sensor body is provided with an optical fiber convenient connecting mechanism, the optical fiber convenient connecting mechanism comprises a pair of optical fiber connecting through holes arranged on the sensor body, and optical fiber connecting adapters are installed in the optical fiber connecting through holes. The end, located in the sensor body, of the optical fiber connection adapter is connected with one end of the sensor optical fiber, the other end of the sensor optical fiber is connected to the optical fiber sensing module in the sensor body, and the monitoring host with the far end located on the ground is connected with the optical cable. The end, away from the monitoring host, of the optical cable is connected with the end, located outside the sensor body, of the optical fiber connection adapter. The optical fiber connection adapter makes the second optical fiber end face of the optical cable in contact connection with the first optical fiber end face of the sensor optical fiber. According to the utility model, the optical fibers can be directly connected through the optical fiber connection adapter, so that the time for carrying out optical fiber fusion splicing underground is effectively saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of separation sensors, and in particular relates to a conveniently connected optical fiber roof separation sensor for mining. Background Art

[0002] The optical fiber roof separation sensor for mining can monitor whether the roof of the underground tunnel of the mine has changed in displacement. Its monitoring principle is to achieve sensor monitoring by measuring the change of optical signals. When the external displacement changes, the wavelength of the grating inside the sensor changes, and the displacement distance is calculated by analyzing the change of wavelength through the demodulation system. The existing optical fiber roof separation sensors for mining are reserved with optical fiber pigtails on the sensor. Each optical fiber pigtail is connected to the optical fiber of the corresponding monitoring channel of the monitoring host by fusion splicing. In this process, the optical fiber pigtails of all sensors and each connection point of the optical fiber of the monitoring host need to be fused, which cannot achieve quick connection and reuse of the optical fiber roof separation sensor. At the same time, during the use of the optical fiber roof separation sensor, once the optical fiber roof separation sensor fails, it is inconvenient to repair and replace it.

[0003] At present, mine underground safety monitoring requires the installation of multiple fiber optic roof separation sensors. A fiber optic roof separation sensor needs to be installed at a certain distance underground in the mine. Too many monitoring points are required, and this fiber optic roof separation sensor is installed on the top of the mine tunnel. Connecting them one by one requires a large amount of high-altitude fiber optic fusion splicing work in the mine, and more fusion splicing equipment and fiber optic cutting and stripping tools need to be carried out on site for fusion splicing. In addition, fiber optic fusion splicing takes a long time and requires a large investment in manpower and material resources. The installation and connection cost of the fiber optic roof separation sensor is high. At the same time, long-term work underground in mines also has corresponding safety hazards. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a conveniently connected optical fiber roof separation sensor for mining. The technical solution adopted by the utility model is as follows:

[0005] A conveniently connected optical fiber roof abscission sensor for use in mines, comprising a sensor body and an anchor claw assembly mounted on the sensor body, wherein an optical fiber convenient connection mechanism is arranged on the sensor body, the optical fiber convenient connection mechanism comprising a pair of optical fiber connection through holes arranged on the sensor body, an optical fiber connection adapter is fixedly mounted in the optical fiber connection through holes, one end of the optical fiber connection adapter located inside the sensor body is connected to one end of the sensor optical fiber, the end of the one end of the sensor optical fiber is a first optical fiber end face, the other end of the sensor optical fiber is connected to an optical fiber sensing module located inside the sensor body, a monitoring host located at a far end above the well is connected to an optical cable, the optical cable is laid to an underground mine tunnel, one end of the optical cable away from the monitoring host is connected to one end of the optical fiber connection adapter located outside the sensor body, the end of the optical cable away from the monitoring host is a second optical fiber end face, the second optical fiber end face at the end of the optical cable is in contact and connected with the first optical fiber end face of the sensor optical fiber through the optical fiber connection adapter, and the first optical fiber end face and the second optical fiber end face use the same type of optical fiber end faces.

[0006] Preferably, both the first optical fiber end face and the second optical fiber end face are SC-APC optical fiber end faces.

[0007] Preferably, a sealing plug is provided at one end of the optical fiber connection adapter located outside the sensor body.

[0008] Beneficial effects of the utility model:

[0009] The utility model can directly connect optical fibers through the optical fiber connection adapter, effectively saving the time spent on optical fiber fusion splicing underground, and more quickly deploying and maintaining the optical fiber roof separation sensor underground in the mine, greatly reducing the labor intensity of the installers, improving the construction conditions, and providing more efficient protection for safe production monitoring in coal mines. The pluggable optical fiber connection adapter has the advantages of high reliability, low connection loss, and convenient and fast access. The optical fiber roof separation sensor with a fast optical fiber connection adapter can be easily installed in different underground locations for repeated use. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0011] Figure 1 It is a structural schematic diagram of a mining optical fiber roof separation sensor according to an embodiment of the utility model;

[0012] In the figure, 1 is the optical fiber connection through hole, 2 is the sensor body, and 3 is the anchor claw assembly. DETAILED DESCRIPTION

[0013] The technical solution of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all of the embodiments.

[0014] like Figure 1 As shown, a conveniently connected optical fiber roof abscission sensor for mining includes a sensor body 2 and an anchor claw assembly 3 installed on the sensor body 2. An optical fiber convenient connection mechanism is arranged on the sensor body 2, and the optical fiber convenient connection mechanism includes a pair of optical fiber connection through holes 1 with a diameter of 3 cm arranged on the sensor body, and an optical fiber connection adapter is fixedly installed in the optical fiber connection through hole 1. One end of the optical fiber connection adapter located inside the sensor body 2 is connected to one end of the sensor optical fiber, and the end of one end of the sensor optical fiber is a first SC-APC optical fiber end face, and the other end of the sensor optical fiber is connected to the optical fiber sensing module located inside the sensor body 2. The monitoring host located at the far end above the well is connected to the optical cable, and the optical cable is laid to the underground mine lane. The end of the optical cable away from the monitoring host is connected to the end of the optical fiber connection adapter located outside the sensor body 2, and the end of the optical cable away from the monitoring host is a second SC-APC optical fiber end face. The optical fiber connection adapter makes the second SC-APC optical fiber end face of the optical cable end contact and connect with the first SC-APC optical fiber end face of the sensor optical fiber for optical signal coupling, so that the optical fiber sensing module of the sensor body 2 can be quickly plugged into the corresponding channels of the monitoring host. The optical fiber connection adapter makes the second SC-APC optical fiber end face of the optical cable end and the first SC-APC optical fiber end face of the sensor optical fiber closely contact and reliably connect together, thereby improving the signal transmission quality. A sealing plug is provided at one end of the optical fiber connection adapter located outside the sensor body. Before the monitoring host optical cable is connected, the sealing plug is used to seal the opening of the end of the optical fiber connection adapter located outside the sensor body 2, so that the sensor body 2 remains sealed.

[0015] The optical fiber convenient connection mechanism designed in the embodiment of the utility model mainly uses the optical signal to enter the optical fiber convenient connection mechanism from one end of the sensor optical fiber. After the end of the optical cable is connected to the optical fiber convenient connection mechanism, the optical fiber connection through hole 1 and the optical fiber connection adapter become a sealed structure, and the light energy output by the transmitting optical fiber can be coupled to the receiving optical fiber to the maximum extent, so that the optical signal can be transmitted from one optical fiber to another. Designing such an optical fiber convenient connection mechanism that connects the optical fibers on both sides on the optical fiber roof abscission sensor can make the connection between the optical cable connected to the monitoring host on the well and the optical fiber of the optical fiber roof abscission sensor underground in the mine more convenient. The jumper of the optical fiber sensing module inside the sensor body 2 is transferred to the sensor optical fiber located at the inner end of the optical fiber connection adapter in advance, and the end of the optical cable connected to the monitoring host is inserted into the other end of the optical fiber connection adapter. The monitoring host can read the monitoring data of the optical fiber roof abscission sensor without doing too much optical fiber fusion connection work underground in the mine. The embodiment of the utility model designs an access method of a convenient optical fiber connection mechanism, which can quickly receive the incident light signal emitted by the monitoring host, and then transmit the light signal transmitted via the optical fiber connection adapter to the receiving end of the sensor, thereby realizing fast optical fiber connection and top plate displacement monitoring data reading.

[0016] In the embodiment of the utility model, compared with the welding loss caused by welding optical fibers, the use of a convenient optical fiber connection mechanism can provide a more stable and reliable connection, and the optical signal transmission speed is faster; at the same time, the optical signal loss can be better reduced to ensure the quality of the signal; subsequent monitoring also becomes more flexible, and the monitoring channel of the monitoring host can be easily replaced; the installation process is convenient, and there is no need to carry a complete set of optical fiber welding equipment and other special tools, and the monitoring host and the mine optical fiber roof abscission sensor can be conveniently connected, thereby improving the safety of production monitoring underground in coal mines.

[0017] In the embodiment of the utility model, the specific technical scheme of the sensor body 2 and the anchor claw assembly 3 can be found in the Chinese utility model patent "A fiber optic roof abscission sensor" with the publication (announcement) number CN219977335U. The fiber optic grating central wavelength value is transmitted to the remote monitoring host by using the optical cable network through the optical fiber sensing module. The embodiment of the utility model is an original fiber optic roof abscission sensor designed with a fiber optic convenient connection mechanism for rapid access in engineering applications. The monitoring host and the optical cable are connected in advance on the well. The end of the optical cable away from the monitoring host is the second SC-APC optical fiber end face. The optical cable connected to the monitoring host is then laid underground. Finally, the end of the optical cable is connected to the fiber optic convenient connection mechanism on the fiber optic roof abscission sensor. Since this type of fiber optic roof separation sensor needs to be installed on the top of a mine tunnel, the prior art requires a lift or ladder to perform fiber optic welding at a high place. The embodiment of the utility model adopts a convenient fiber optic connection mechanism, which can save the tedious steps of high-altitude operations in the mine, so that the fiber optic roof separation sensor can be quickly connected to the monitoring host, and the fiber optic roof separation sensor can be moved and reused at any time, thereby reducing costs and increasing efficiency for user units, bringing considerable economic benefits.

[0018] In the embodiments of the utility model, the technical features not described in detail are all existing technologies or conventional technical means and will not be described in detail here.

[0019] Finally, it should be noted that the above embodiments are only specific implementation methods of the present utility model, which are used to illustrate the technical solution of the present utility model, rather than to limit it, and the protection scope of the present utility model is not limited thereto. Those skilled in the art should understand that any technician familiar with the technical field can modify the technical solution recorded in the above embodiments within the technical scope disclosed by the present utility model, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solution deviate from the spirit and scope of the technical solution of the embodiment of the present utility model, and should be covered within the protection scope of the present utility model.

Claims

1. A conveniently connected optical fiber roof separation sensor for mining, comprising a sensor body and an anchor claw assembly mounted on the sensor body, characterized in that: A convenient optical fiber connection mechanism is arranged on the sensor body, and the convenient optical fiber connection mechanism includes a pair of optical fiber connection through holes arranged on the sensor body, and an optical fiber connection adapter is fixedly installed in the optical fiber connection through holes. One end of the optical fiber connection adapter located inside the sensor body is connected to one end of the sensor optical fiber, and the end of one end of the sensor optical fiber is a first optical fiber end face. The other end of the sensor optical fiber is connected to the optical fiber sensing module located inside the sensor body. The monitoring host located at the far end above the well is connected to the optical cable, and the optical cable is laid to the underground mine tunnel. The end of the optical cable away from the monitoring host is connected to the end of the optical fiber connection adapter located outside the sensor body, and the end of the optical cable away from the monitoring host is a second optical fiber end face. The second optical fiber end face at the end of the optical cable is contacted and connected with the first optical fiber end face of the sensor optical fiber through the optical fiber connection adapter, and the first optical fiber end face and the second optical fiber end face adopt the same type of optical fiber end face.

2. The optical fiber roof separation sensor for mines with convenient connection according to claim 1 is characterized in that: The first optical fiber end face and the second optical fiber end face both adopt SC-APC optical fiber end faces.

3. A conveniently connected optical fiber roof separation sensor for mining according to claim 1 or 2, characterized in that: A sealing plug is provided at one end of the optical fiber connection adapter located outside the sensor body.

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