Fireproof blanket and production method thereof

Abstract

The invention discloses a fireproof blanket and a production method of the fireproof blanket. The fireproof blanket comprises a first bendable cover sheet, a second bendable cover sheet and an inorganic heat-absorbing material located between the first bendable cover sheet and the second bendable cover sheet. The inorganic heat-absorbing material is an inorganic material absorbing heat when heatedand releasing water vapor. At least one recessed through hole is formed in the first bendable cover sheet from the outside to the inner side, and the second bendable cover sheet is in the form of a flat sheet. When the fireproof blanket is applied to a covering cable joint, the first bendable cover sheet of the fireproof blanket is arranged on the cable joint as the inner side in a covering manner, then the recessed through holes are formed between the cable joint and the fireproof blanket, the recessed through holes can be used for ventilation and heat dissipation, and part of the heat generated by the operation of a cable conductor is taken away, so that a cable can maintain a lower temperature under normal operating conditions. When the outside temperature is high, the fireproof blanket absorbs heat by the inorganic heat-absorbing material and releases the water vapor to cool down and cooperates with a ceramic shell formed by crusting of the fireproof blanket in the high temperature environment to achieve the purpose of fire prevention.

Description

Technical field [0001] The invention relates to a fire blanket and a production method thereof. Background technique [0002] Current power cables and intermediate joints only have specific requirements for waterproofing. Therefore, the current intermediate head protection is mainly for waterproofing and certain mechanical protection, and basically has no fireproof function. The reality is that there are multiple cables in each cable tunnel. When an accident occurs to a cable of a loop, an open flame will often occur, which will damage the cables next to it, and the damage will be great. Summary of the invention [0003] The main purpose of the present invention is to overcome the shortcomings of the prior art and provide a fire blanket and its production method. [0004] In order to achieve the above objective, the present invention provides a fire blanket, which includes a first bendable cover sheet, a second bendable cover sheet, and an inorganic material located between the fir...

AI Technical Summary

Problems solved by technology

[0002] The current power cables and intermediate joints only have specific requirements for waterproofing. Therefore, the current intermediate head protection is mainly aimed at waterproofing and certain mechanical protection, and basically has no fireproof function. However, the reality is that there are multiple cables in each cable tunnel. For the cables in the loop, when an accident occurs at one joint, an open flame will often be generated, which will damage the nearby cables, and the damage will be great

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