Fireproof watertightness type pre-branched magnesium oxide cable and installation method thereof

A pre-branched, magnesium oxide technology, used in cable installation, cable joints, cable accessories, etc., can solve the problems of non-refractory service life, difficult sealing, difficult connection, etc., to achieve good firmness, good fire resistance, Good water tightness effect

Pending Publication Date: 2017-11-03
上海胜华电气股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, there is no fire-proof and water-tight pre-branched magnesium oxide cable (also known as mineral insulated cable, model BTTZ) at home and abroad. The market products have the following disadvantages: all branches use branch boxes for "T" connection and "ten" connection, with Defects such as water tightness, fire resistance and short service life
It can be seen that due to the thermal expansion of copper materials, in order to achieve qualified fire protection and water tightness indicators, it is difficult to seal in assembly.
In addition, due to the high hardness of the cable, it is very difficult to connect in a relatively short length

Method used

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  • Fireproof watertightness type pre-branched magnesium oxide cable and installation method thereof
  • Fireproof watertightness type pre-branched magnesium oxide cable and installation method thereof
  • Fireproof watertightness type pre-branched magnesium oxide cable and installation method thereof

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Embodiment Construction

[0023] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0024] figure 1 It is a structural schematic diagram of a fire-proof water-tight type pre-branched magnesium oxide cable of the present invention; figure 2 It is a structural schematic diagram of the inner conductor connector of the fireproof and watertight type pre-branched magnesium oxide cable of the present invention.

[0025] See figure 1 and figure 2 , The fireproof watertight type pre-branched magnesium oxide cable provided by the present invention is composed of a conductor connector 1 and a sheath connecting body 8 . The conductor connector 1 is shaped by casting the blank material of copper material. One end forms the main cable inlet 2, and the other end forms the main cable outlet 3 and the branch cable 4. The three insertion ports are The head is externally threaded, and one or more press-fit sheets 5 are arranged between the inner si...

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PUM

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Abstract

The invention discloses a fireproof watertightness type pre-branched magnesium oxide cable and an installation method thereof. The pre-branched magnesium oxide cable comprises a conductor connector and a protective jacket connector, wherein a main cable ingoing and inserting port is at one end of the conductor connector; a main cable outgoing and inserting port and a branch cable inserting port are at the other end of the conductor connector; the conductor connector is arranged in the protective jacket connector; a drum press fitting sheet and a compression nut are arranged at the main cable ingoing end of the protective jacket connector; a rear cover is arranged at the cable outgoing end of the protective jacket connector; a main cable outgoing end and a branch cable outgoing end are arranged on the rear cover; and both the main cable outgoing end and the branch cable outgoing end are provided with the drum press fitting sheet and the compression nut. The fireproof watertightness type pre-branched magnesium oxide cable and the installation method thereof provided by the invention have the characteristics of being good in watertightness, firmness and fireproofing, simple in structure and easy to install and use and the like; and the service life is over 100 years.

Description

technical field [0001] The invention relates to a magnesium oxide cable and an installation method thereof, in particular to a fireproof and watertight pre-branched magnesium oxide cable and an installation method thereof. Background technique [0002] At present, there is no fire-proof and water-tight pre-branched magnesium oxide cable (also known as mineral insulated cable, model BTTZ) at home and abroad. The market products have the following disadvantages: all branches use branch boxes for "T" connection and "ten" connection, with Defects such as water tightness, fire resistance and short service life. It can be seen that due to the thermal expansion of copper materials, in order to achieve qualified fire protection and water tightness indicators, it is difficult to seal in assembly. In addition, due to the high rigidity of the cable, it is very difficult to connect in a relatively short length. Contents of the invention [0003] The technical problem to be solved by...

Claims

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Application Information

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IPC IPC(8): H02G15/18
CPCH02G15/1806Y02A30/14
Inventor 王建中戴伟国
Owner 上海胜华电气股份有限公司
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