Mining flame-retardant armored optical cable MGTS33-36B

Mining flame-retardant armored optical cable MGTS33-36B

Types and uses of mining fiber optic cables: Mining fiber optic cables are called flame-retardant communication fiber optic cables for coal mines or flame-retardant communication fiber optic cables for coal mines, abbreviated as mining fiber optic cables, coal mine fiber optic cables or coal fiber optic cables, with the model MGTSV. Mining optical cable MGTSV is a special application of fiber optic cable in communication, used for communication in the coal mining industry. It is an optical cable used in mining occasions such as coal mines, gold mines, and iron mines.

The mining optical cable MGTSV not only has all the performance of fiber optic cables, but also adds many special properties due to the special requirements of the coal mining industry. The main added properties are flame retardant and rodent proof (in the special environment of mines). As coal mines, gold mines, iron mines and other mines are prone to accidents, especially coal mines, in order to ensure smooth communication and reduce losses in the event of accidents, the Production Supervision and Administration Bureau (National Coal Mine Safety Supervision Bureau) requires safety certification for all products used in coal mines, including communication optical cables, namely: mining product safety mark certification. There are no corresponding standards for gold mines, iron mines, etc. Due to the comprehensive performance of coal mine optical cables being the standard for mining and also requiring high standards in the industry, other mines generally design and produce according to coal mine optical cables.

The structure of the four mine flame-retardant optical cable is to embed single-mode or multi-mode optical fibers into a loose tube made of high modulus plastic, and fill the tube with a water-resistant compound. The center of the cable core is a phosphorized steel wire or a steel wire rope extruded with polyethylene. A loose sleeve (or filling rope and signal wire) is twisted around the center to strengthen the core and form a compact and circular cable core. The gaps inside the cable core are filled with water-resistant filling material and bonded with a steel polyethylene inner sheath. The sheath is a flame-retardant sheath (blue).

Mining flame-retardant armored optical cable MGTS33-36B

Flame retardant comprehensive optical cable MGTS33 (steel wire reinforced type) for coal mine shafts

Product Description: How to Translate

The structure of the flame retardant composite optical cable MGTS33 for standard coal mine shafts is to insert single-mode or multi-mode optical fibers into a loose sleeve made of high modulus plastic, and fill the sleeve with a water-resistant compound. The center of the cable core is a phosphorized steel wire or a phosphorized steel wire extruded with polyethylene. 5-12 loose tubes (or filling ropes and signal lines) are twisted around the center to strengthen the core and form a compact and circular cable core. The gaps inside the cable core are filled with water-resistant filling material, and the steel strip is longitudinally wrapped with an inner sheath. After the steel wires are twisted and armored, the blue flame-retardant outer sheath is used to form the cable.

Product Features:

Accurate control of the remaining length of the optical fiber ensures that the cable has good tensile performance and temperature characteristics

The loose tube material itself has good hydrolysis resistance and high strength. The tube is filled with special grease to provide critical protection for the optical fiber

• Good compression resistance and flexibility

Adopt the following measures to ensure the waterproof performance of the optical cable

Single steel wire center reinforcement

Fill special fiber paste inside the loose tube

Cable core filling

Good waterproof materials prevent longitudinal water seepage of optical cables

Technical parameters:

Number of optical cable cores, diameter of optical cable, weight of optical cable, allowable tensile force, allowable flattening force

(mm) (kg/km) Long term/short-term (N) Long term/short-term (N/10cm)

2-30 cores 15.2 475 4000/10000 1000/3000

Operating temperature: -40 ℃ to+60 ℃

Bending radius: Static 12.5 times the outer diameter of the optical cable

Dynamic 25 times the outer diameter of the optical cable

Applicable: Vertical shaft (shaft)

Loose tube identification chromatography number 123456789101112 Color red green optical fiber identification chromatography number 123456789101112 Color blue orange green brown gray white red black yellow purple pink blue-green optical fiber color is generally used in the order of blue, orange, green, brown, gray, white (this), red, black, yellow, purple, pink, blue-green. When it does not affect identification, natural color should be used first instead of white. When there is no natural color in the fiber bundle tube, natural color can be used instead of the next fiber color. The specific number of cores and colors are as follows:

2-core: Blue, Ben;

4-core: Blue, Orange, Green, Ben;

6-core: Blue, Orange, Green, Brown, Gray, Ben;

8-core: Blue, Orange, Green, Brown, Grey, Ben, Red, Black;

10 cores: Blue, Orange, Green, Brown, Grey, Ben, Red, Black, Yellow, Purple;

12 cores: Blue, Orange, Green, Brown, Grey, Ben, Red, Black, Yellow, Purple, Pink, Green.

Precautions for Optical Cable Installation

(1) Optical cables can be laid in the same way as general mining cables, but attention should be paid not to exceed the allowable tensile force, flattening force, and bending radius of the optical cable, otherwise it may cause sexual damage to the optical cable, and in severe cases, it may result in the cable being scrapped. The allowable tensile force of the optical cable during laying shall not exceed 10000N, and the tensile force of the optical cable during operation shall not exceed 4000N (which can be increased according to user requirements); The flattening force of the optical cable during laying is 3000N/100mm, and the flattening force during operation is 1000N/100mm; The allowable bending radius of the optical cable during laying is 25D, and the bending radius during operation is 12.5D.

(2) The ambient temperature during the installation and laying of optical cables should not be lower than -10 ℃.

(3) Typical values of effective group refractive index of optical fiber:

B1 光纤 1310nm 1.466 1550nm 1.467

(4) After the laying is completed, personnel should complete the connection of the optical cable. During the process of connecting the optical cable, electric sparks will be generated. Therefore, a gas safety officer should be equipped before the connection to conduct gas detection within a certain range of the connection site. When the gas concentration does not meet the safety requirements, the mine should be ventilated to reduce the gas concentration to a safe range before the optical cable can be connected.