What kinds of connecting cables are used in common telecommunication cables?
Structure: inner aluminum Bush and intermediate hot melt adhesive, the surface is hot and contractible plastic, and the difference uses different cards to reach the sealing effect.3: features: solid appearance, good sealing performance.4. Disadvantages: complex operation (heating), limited by weather and operating environment, easy to fail and difficult to find, easy to leak water. Product quality, construction technology, and later stress may cause water inflow, so it is difficult to divide responsibility. It is easy to cause personal injury to the constructors during underground operation. In fact, regardless of imports, domestic water inflow phenomenon.5, scope of application: all kinds of inflatable or non inflatable communications cables.
There are many kinds of communication cable splicing products, mainly due to the different applications, forms and scope of application. Let's briefly introduce the communication cable splicing products. 1, 2, 3 heat shrinkable breathable casing, glass steel sleeve 4, filling casing 5, mechanical casing casing, 1 Principle: change the molecular structure by heating, and hot melt extrusion and contraction between the cable and the heat shrinkable plastic filler to achieve the sealing effect.
Repetitive use: none. Ventilation sleeve 1: Principle: both ends are sealed with rubber ring, and two holes are reserved at the bottom. If there is water entering, it will leak out of the two hole. Two holes can be exchanged with the outside air to avoid internal long-term damp.2, structure: cylindrical structure, divided into more than one out, single into, out of several types.3 features: simple operation, moderate price, can be reused.4, shortcomings: no tightness, the cable is easy to water and polluting gases, and even cable lead to scrap, high barriers.5, scope of application: for overhead 200 pairs of the following non inflatable cable. In mountainous areas and hilly areas, because of easy water inflow during installation, it is easy to be affected by floods and pollution areas.6, reuse: repeated use. Glass steel sleeve 1, intermediate principle: the glass steel material, two with self-adhesive tape shut encapsulation, bottom left seam, can avoid the internal and external exchange of air, long-term moisture.2, structure: made of glass fiber reinforced plastic material bending, low strength3 features: simple operation, low price4. Disadvantages: no tightness, easy to damage, deformation, cable easy to enter water, high obstacle rate.5, scope of application: applicable to aerial units, non inflatable cable. Areas vulnerable to flooding are not recommended.6, reuse: basic can not be reused. Oil filled type combination sleeve 1, principle: use water resistance ointment waterproof, shell by plastic tube made.
