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CN-122025260-A - Fireproof cable with lateral end monitoring guide cover

CN122025260ACN 122025260 ACN122025260 ACN 122025260ACN-122025260-A

Abstract

The invention relates to the technical field of fireproof cables, in particular to a fireproof cable with a lateral end monitoring guide cover, which comprises a fireproof cable body, wherein the fireproof cable body consists of a copper stranded core wire, a core wire insulating layer, a core wire shielding layer, a filling layer, a cabling layer, a metal spiral corrugated pipe and a halogen-free flame-retardant polyolefin outer sheath from inside to outside, a transverse return pipe is arranged between the filling layer and the cabling layer, and lateral monitoring rings for connecting the metal spiral corrugated pipe with a medium in the transverse return pipe in series are arranged at two ends of the fireproof cable body. According to the fireproof cable with the lateral end monitoring guide cover, the lateral monitoring rings for serially connecting the metal spiral corrugated pipe and the medium in the transverse return pipe are arranged at the two ends, the magnetic control reciprocating type one-way flow guide valve in the lateral monitoring rings is used for controlling the heat exchange medium to flow in one direction between the metal spiral corrugated pipe and the transverse return pipe, the design of an annular motor is omitted, the occupation of the external structure is greatly reduced, and the structural integrity is improved.

Inventors

  • Zhang Yuou
  • CHEN XINGWU
  • BIAN BO

Assignees

  • 远东电缆有限公司
  • 新远东电缆有限公司
  • 远东复合技术有限公司

Dates

Publication Date
20260512
Application Date
20260414

Claims (10)

  1. 1. The fireproof cable with the lateral end monitoring guide cover comprises a fireproof cable body and is characterized in that the fireproof cable body is composed of a copper stranded core wire (1), a core wire insulating layer (2), a core wire shielding layer (3), a filling layer (4), a cabling layer (5), a metal spiral corrugated pipe (6) and a halogen-free flame-retardant polyolefin outer sheath (7) from inside to outside, a transverse return pipe (8) is arranged between the filling layer (4) and the cabling layer (5), and lateral monitoring rings (9) used for connecting the metal spiral corrugated pipe (6) and internal media of the transverse return pipe (8) in series are arranged at two ends of the fireproof cable body.
  2. 2. A fire protection cable with a lateral end monitoring dome according to claim 1, characterized in that the assembly surface of the lateral monitoring ring (9) is provided with a first communication duct (10) communicating with the metal helical bellows (6) and a second communication duct (11) communicating with the transverse return duct (8).
  3. 3. The fireproof cable with the lateral end monitoring dome according to claim 2, wherein an internal monitoring flow passage (12) connected in series with the first communication conduit (10) and the second communication conduit (11) is formed in the lateral monitoring ring (9).
  4. 4. A fire protection cable with a lateral end monitoring air guide sleeve as claimed in claim 3, wherein the lateral monitoring ring (9) comprises an arc-shaped first mounting sleeve (91), an arc-shaped second mounting sleeve (92) and a magnetic control reciprocating type one-way air guide valve (93), and the arc-shaped first mounting sleeve (91) and the arc-shaped second mounting sleeve (92) are fixedly assembled through lateral bolts.
  5. 5. A fire protection cable with a lateral end monitoring pod according to claim 4, wherein the magnetically controlled reciprocating one-way diverter valve (93) comprises an end electromagnet (931) mounted within the internal monitoring flow channel (12), a compression spring (932), a reciprocating adjustment block (933) and a one-way valve (934) mounted within the reciprocating adjustment block (933).
  6. 6. The fire protection cable with the lateral end monitoring dome according to claim 5, wherein the inner monitoring flow channel (12) comprises a first arc-shaped flow guiding channel (121) connected in series with the first communication conduit (10), a second arc-shaped flow guiding channel (122) connected in series with the second communication conduit (11) and a middle flow guiding channel (123), and the end electromagnet (931) is fixedly arranged on one side of the end of the middle flow guiding channel (123).
  7. 7. The fire protection cable with the lateral end monitoring air guide sleeve according to claim 2, wherein the end parts of the first communication duct (10) and the second communication duct (11) are respectively provided with a pressure sensing monitoring unit (13).
  8. 8. The fire protection cable with the lateral end monitoring pod of claim 5, wherein the temperature sensor module (14) is fixedly mounted on the mounting surface of the check valve (934) inside the reciprocating adjustment block (933).
  9. 9. The fire protection cable with the lateral end monitoring air guide sleeve as claimed in claim 5, wherein embedded LED status lamps (15) are installed on the outer arc surfaces of the arc-shaped first installation cover (91) and the arc-shaped second installation cover (92).
  10. 10. The fire protection cable with a lateral end monitoring dome as set forth in claim 6, wherein the first communication conduit (10) is fixedly mounted on the first arcuate mounting dome (91) and is in communication with the first arcuate flow channel (121), and the second communication conduit (11) is fixedly mounted on the second arcuate mounting dome (92) and is in communication with the second arcuate flow channel (122).

Description

Fireproof cable with lateral end monitoring guide cover Technical Field The invention relates to the technical field of fireproof cables, in particular to a fireproof cable with a lateral end monitoring guide cover. Background The fireproof cable is a special cable specially designed for maintaining the continuity of power or signal transmission under fire conditions, and has the core function of maintaining the circuit integrity and the electrical function in a specified period of time in a high-temperature even flame direct burning environment, thereby providing guarantee for the operation of critical emergency circuits such as emergency lighting, fire alarm, smoke discharging systems, escape equipment and the like, and further supporting the evacuation of personnel, fire suppression and important data preservation to the greatest extent. The insulation and sheathing of fire-resistant cables typically uses special silicone rubber or polymers that form a hard, ceramic protective layer at high temperatures, or a tightly wrapped mica tape over the conductor. Mica is a natural inorganic mineral that not only does not burn at high temperatures, but also maintains excellent insulating properties. Secondly, a common flexible fireproof cable adopts copper strips to longitudinally wrap and weld to form a continuous sealed metal sheath as an outer protective layer. The structure can effectively isolate flame and oxygen, prevent the internal conductor from overheating, and maintain the circuit to be unobstructed through the heat absorption and insulation properties of the mineral materials when the internal conductor is in fire. The fireproof cable has outstanding fireproof performance, adopts a halogen-free low-smoke sheath design, generates little toxic smoke and corrosive halogen acid gas when being burnt or heated, and avoids secondary injury to personnel and precision equipment. However, the current fireproof cable still can only passively prevent fire, along with the progress of science and technology, some fireproof cables with end diversion mechanisms appear, and the flow rate inside can be automatically regulated according to the use scene, so that the internal temperature is quickly taken outwards, the local high temperature of the cable is reduced, but the diversion mechanisms all adopt the design of an annular motor, the occupied space is huge, the installation is very inconvenient, and the intelligent degree is not high. Disclosure of Invention The invention aims to solve the technical problems that the current diversion mechanisms of the active fireproof cable are designed by adopting annular motors, so that the occupied space is huge, the installation is very inconvenient, and the intelligent degree is low. The fireproof cable with the lateral end monitoring guide cover comprises a fireproof cable body, wherein the fireproof cable body consists of a copper stranded core wire, a core wire insulating layer, a core wire shielding layer, a filling layer, a cabling layer, a metal spiral corrugated pipe and a halogen-free flame-retardant polyolefin outer sheath from inside to outside, a transverse return pipe is arranged between the filling layer and the cabling layer, and lateral monitoring rings for connecting the metal spiral corrugated pipe and a medium in the transverse return pipe in series are arranged at two ends of the fireproof cable body. The assembly surface of the lateral monitoring ring is provided with a first communication conduit communicated with the metal spiral corrugated pipe and a second communication conduit communicated with the transverse return pipe. An internal monitoring flow passage connected with the first communication conduit and the second communication conduit in series is formed in the lateral monitoring ring. The lateral monitoring ring comprises an arc-shaped first mounting cover, an arc-shaped second mounting cover and a magnetic control reciprocating type one-way flow guide valve, and the arc-shaped first mounting cover and the arc-shaped second mounting cover are fixedly assembled through lateral bolts. The magnetic control reciprocating type one-way flow guide valve comprises an end electromagnet, an extrusion spring, a reciprocating type adjusting block and a one-way valve arranged in the reciprocating type adjusting block, wherein the end electromagnet is arranged in the internal monitoring flow channel. The internal monitoring flow channel comprises a first arc-shaped flow guide channel connected with the first communication guide pipe in series, a second arc-shaped flow guide channel connected with the second communication guide pipe in series and a middle-arranged flow guide channel, and the end electromagnet is fixedly arranged on one side of the end part of the middle-arranged flow guide channel. The pressure sensing monitoring units are arranged at the end parts of the first communication conduit and the second communication conduit. And a temperature sensor