CN2701036Y

CN2701036Y - Dual screening high-voltage signal control cable

Info

Publication number: CN2701036Y
Application number: CNU2004200458280U
Authority: CN
Inventors: 李明斌
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-05-18
Filing date: 2004-05-18
Publication date: 2005-05-18
Anticipated expiration: 2014-05-18

Abstract

The utility model relates to a dual screening high-voltage signal control cable, comprising a signal wire, a foil shielding layer, a metal wire braid shielding layer and an insulation serving. The signal wire is a heat-resistant FEP poly perfluoroethylene insulated wire, and the insulation layer is a thin type structure. The wire conductor is a tin-coated copper wire which is used to transmit control signals. The material of the foil shielding layer is an aluminum foil which wraps a certain quantity of the signal wires to form a first shielding layer. The material of the metal wire woven shield is a tin-coated copper wire which winds the aluminum foil shielding layer to form a second shielding layer. The material of the insulation serving is the PVC plastic or the PU plastic, and the insulation serving is tightly coated by the second shielding layer. The signal control cable of the utility model has favorable electromagnetic interference resistance, and the heat resistance is improved.

Description

A kind of dual shield high-voltage signal control cable

Technical field:

The utility model relates to a kind of dual shield high-voltage signal control cable, especially is used as the communication network high-pressure type control signal stube cable of various signal generators, satellite received signal device, air material etc.

Background technology:

Be used in the high-voltage signal control cable of various communication networks at present, its metal screen layer is an individual layer, and the capability of electromagnetic shielding of cable is not strong, under more powerful control signal operating state, causes to some extent and extraneous mutual interference mutually; In addition, what the insulating barrier of described signal controlling cable signal electric wire adopted is the lower plastics of thermal endurance, and for reaching the dielectric voltage withstand effect, the thickness of insulating barrier is thicker, makes the limited amount of the signal wires that described cable comprises.

Summary of the invention:

Problem according to above-mentioned existence, the purpose of this utility model is to improve above-mentioned control cable not strong shortcoming of capability of electromagnetic shielding under more high-power control signal operating state, and, make the shortcoming of the limited amount of signal wires that described cable comprises because the thickness of insulating layer of signal wires is thicker.

For achieving the above object, the utility model provides a kind of dual shield high-voltage signal control cable, comprising: signal wires also comprises dual metal screen layer, the insulation serving;

Described signal wires conductor is a tinned wird; In order to transmission of control signals, the insulating layer material of electric wire adopts the higher plastics of thermal endurance, thereby, but the thickness attenuate of insulating barrier, so that the utility model control cable can comprise the described signal wires of greater number; Described dual metal screen layer, its first heavy screen is the metal forming screen, and it holds the described signal wires of some, and the second heavy screen is the metal wire knitted screen, and it is closely compiled around described ground floor screen; Described insulation serving is the lining second heavy screen closely, and its material is the cost meter, still adopts common plastics, more than just constitute the utility model.

As a kind of improvement of the present utility model, be that single-layer metal shielding construction with existing high-voltage signal control cable in the above-mentioned specific field of employment changes dual metallic shield structure into, to strengthen the capability of electromagnetic shielding of described signal controlling cable under more powerful control signal operating state, prevent and the mutual electromagnetic interference of outside generation;

As another kind of improvement the of the present utility model, particularly change under the prerequisite of dual metallic shield structure at described signal controlling cable, change the insulating barrier of signal wires into heat-resisting thin isolation layer structure, can make the described signal wires that can comprise greater number in the improvement structure of the present utility model.

Description of drawings:

Fig. 1 is the structural diagrams of the utility model signal controlling cable;

Fig. 2 is the structural diagrams of signal wires in the utility model signal controlling cable

The accompanying drawing sign:

Signal wires 1, metal forming screen 2, metal wire knitted screen 3, insulation serving 4; Signal wires insulating barrier 11, signal wires conductor 12;

Embodiment:

In order to further specify above-mentioned purpose of the present utility model, structure and effect, embodiment of the present utility model is described below in conjunction with accompanying drawing:

Fig. 1 is the structural diagrams of the utility model signal controlling cable, and Fig. 2 is the structural diagrams of signal wires in the utility model signal controlling cable,

Described signal controlling cable comprises: signal wires 1, tinsel screen 2, metal wire knitted screen 3, insulation serving 4;

The insulating barrier 11 of described signal wires 1 is the insulation of FEP polyfluorinated ethylene, its conductor 12 is a tinned wird, in order to transmission of control signals, because FEP perfluoroethylene alkene plastics thermal endurance height, can make the insulating barrier of signal wires 1 change thin type structure into, so that described signal controlling cable can comprise the described signal wires 1 of greater number, described metal forming screen 2, material adopts aluminium foil, and it holds 3 described signal wires 1, forms the first heavy screen, described metal wire knitted screen 3, material adopts tinned wird, and it is closely compiled around described foil shielding layer 2, forms the second heavy screen, described insulation serving, material adopts PVU or PU plastics, and its second heavy screen that closely is covered just constitutes the utility model signal controlling cable.

As an embodiment of the present utility model, its finished product electric wire withstand voltage test can be passed through: the test of the withstand voltage 2500V of normality (AC)/5min, operating temperature range :-60 ℃-+200 ℃;

The utility model signal controlling cable, anti-electromagnetic interference is strong, and has improved thermal endurance, is more suitable for being used for the high-voltage signal control connecting line of various communication networks.

Claims

1, a kind of dual shield high-voltage signal control cable comprises: signal wires is characterized in that the insulating barrier of described signal wires is the high thin isolation layer of thermal endurance; Also comprise: dual metal screen layer, insulation serving; The first heavy screen of described dual metal screen layer is the metal forming screen, and it holds the described signal wires of the thin isolation layer structure of some, and the second heavy screen is the metal wire knitted screen, and it is closely compiled around described ground floor screen; Described insulation serving is the lining second heavy screen closely.

According to claims 1 described a kind of dual shield high-voltage signal control cable, it is characterized in that 2, the first heavy polymeric barrier layer materials of described dual metal screen layer adopts aluminium foil, the second heavy polymeric barrier layer materials adopts the tinned wird braiding.

3, according to claims 1 described a kind of dual shield high-voltage signal control cable, it is characterized in that the quantity of the described signal wires that described dual metal screen layer held can be 3 to 20.

According to claims 1,2 and 3 described a kind of dual shield high-voltage signal control cable, it is characterized in that 4, the insulating layer material of the described signal wires of thin isolation layer structure adopts FEP perfluoroethylene alkene plastics.

According to claims 1,2 or 3 described a kind of dual shield high-voltage signal control cable, it is characterized in that 5, described insulation serving material adopts PVC or PU plastics.