Maintenance telephone system that meets the needs of domestic nuclear power plants

Abstract

The invention belongs to the technical field of nuclear power plant communication, and in particular relates to a maintenance telephone system that meets the use requirements of domestic nuclear power plants. Including inspection of telephone system host, emergency transfer box, wall-mounted telephone socket, portable telephone terminal, cable distribution box; inspection of all subscriber lines of telephone system host and emergency circuit lines of emergency transfer box connected to the distribution bar, Then connect the user lines and emergency return lines to the cable distribution box through the user cables. Each pair of user lines in the cable distribution box is respectively connected to the normal mode jacks of the wall-mounted telephone sockets in a star-shaped manner through telephone lines. The emergency loop line in the junction box connects the emergency mode jacks of all the wall-mounted telephone sockets in this emergency loop through the bus through the telephone line; the portable maintenance telephone terminal is connected to the wall-mounted socket according to the working mode, including normal mode / emergency mode. The normal mode jack / emergency mode jack corresponding to the call socket can complete the connection and make a call.

Description

technical field [0001] The invention belongs to the technical field of nuclear power plant communication, and in particular relates to a maintenance telephone system that meets the use requirements of domestic nuclear power plants. Background technique [0002] At present, there are few special-purpose products that meet domestic nuclear power plant maintenance telephones, which are generally replaced by acoustic telephones or ordinary telephones, which are difficult to meet the actual needs of nuclear power plant on-site maintenance. Although the voice phone can be used without a host and passive source, it can only be used in a small area, such as ships, small workshops, etc., due to the limitation of the call distance and call function, and cannot realize point-to-point calls; although ordinary phones have a call distance It is far away, generally up to 5-6Km, but ordinary telephones must rely on telephone switches or other host equipment for use, and additional power dis...

AI Technical Summary

Problems solved by technology

Although the voice phone can be used without a host and passive source, it can only be used in a small area, such as ships, small workshops, etc., due to the limitation of the call distance and call function, and it cannot realize point-to-point calls; although ordinary phones have a call distance It is far away, usually up to 5-6Km, but ordinary telephones must rely on telephone switches or other host equipment for use, and additional power distribution is required. Once the power supply is lost or the telephone exchange host equipment is paralyzed due to various reasons, ordinary telephones cannot be used.

Images