Cable joint protection box

A technology for cable joints and protection boxes, which is applied in cable joints, fire rescue, etc., and can solve problems such as explosion-prone, fire-proof and poor ventilation effects
CN112018714AInactive Publication Date: 2020-12-01LUYANG ENERGY SAVING MATERIALS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
LUYANG ENERGY SAVING MATERIALS CO LTD
Publication Date
2020-12-01
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a cable joint protection box. The cable joint protection box includes a shell, the shell comprises a protection cavity which is used for protecting a cable joint, and the protection cavity is provided with a penetrating opening which penetrates through the inside and the outside and is used for penetrating a cable; and the shell is provided with a heat dissipation hole penetrating into the protection cavity from the outer side. A heating expansion plug is fixed in the heat dissipation hole; and the heating expansion plug is provided with a ventilation hole penetrating through the interior and the exterior. The heating expansion plug can expand to seal the ventilation hole to seal the heat dissipation hole when the environment temperature reaches a first preset temperature value, and the heating expansion plug can be separated from the heat dissipation hole in the pressure difference direction when the internal pressure is increased until the internal and external pressure difference reaches a preset pressure difference. The heating expansion plug is closed when the internal temperature is too high, fire spreading is effectively prevented, the heating expansion plug can be bounced off under high pressure, and shell explosion is prevented through pressure relief, so the service life is effectively prolonged, and a better fireproof ventilation effect is achieved.
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Description

technical field

[0001] The invention relates to the technical field of cable connection, and more specifically, to a cable joint protection box. Background technique

[0002] With the development planning of the city, the use of cable tunnels is becoming more and more extensive. The cables in the cable tunnel are densely packed, and the consequences of fire are serious. About 70% of the tunnel cable fires were caused by the explosion of cable joints. Therefore, the fire and explosion protection of cable joints in cable tunnels is particularly important. Fire and explosion-proof boxes are often installed at cable joints. However, the current fire and explosion-proof boxes are difficult to provide good fire and explosion protection, and the ventilation effect is not good, which may easily cause the temperature inside the box to rise and increase the risk of fire.

[0003] To sum up, how to effectively solve the problem that the current cable joint protection box has poor f...

Claims

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