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CN-224213157-U - Fire-proof structure of air clamp observation window

CN224213157UCN 224213157 UCN224213157 UCN 224213157UCN-224213157-U

Abstract

The utility model provides a fire prevention structure of observation window is pressed from both sides to gas, relates to bridge cable facility technical field, and the gas presss from both sides to be cylindric, including last gas clamp and lower gas clamp, upward be provided with the opening on gas clamp and/or the lower gas clamp, the opening part is provided with the observation window, the observation window includes observation window clamp plate and observation window glass, is provided with the fire prevention lid outside the observation window clamp plate. The observation window has good fireproof performance, and when a fire disaster occurs, the fireproof cover can bear high temperature, so that the common curved glass is prevented from being broken due to thermal shock, the integrity of the observation window is maintained, and effective protection is provided for the main cable.

Inventors

  • YAO XUAN
  • GUO YOUYI
  • YAO CHAO
  • ZHANG JIANWEI
  • WANG GUOJUN
  • DUAN ZHIQIANG
  • WU WEIBO

Assignees

  • 杭州科兰德除湿设备有限公司

Dates

Publication Date
20260508
Application Date
20250514

Claims (9)

  1. 1. The fireproof structure of the gas clamp observation window is characterized in that an opening is formed in the upper gas clamp and/or the lower gas clamp, and an observation window is arranged at the opening; the observation window comprises an observation window pressing plate and an observation window glass (23), and a fireproof cover (31) is arranged outside the observation window pressing plate.
  2. 2. The fireproof structure of the air clamp observation window is characterized in that a fireproof layer is arranged on the outer surface of the fireproof cover (31), an epoxy fireproof paint layer and a fluorocarbon paint layer (35) are sequentially arranged from inside to outside, the fireproof layer is arranged on the inner surface of the fireproof cover (31), and a silicone structural adhesive layer (36) and an aerogel layer (37) are sequentially arranged from inside to outside.
  3. 3. A fire protection structure for an air jig viewing window according to claim 2, wherein the epoxy fire protection paint layer comprises a first epoxy fire protection paint layer (32) and a second epoxy fire protection paint layer (34), and a reinforced high temperature fiber net (33) is arranged between the first epoxy fire protection paint layer (32) and the second epoxy fire protection paint layer (34).
  4. 4. A fire prevention structure of an air clamp observation window according to claim 3, wherein the aerogel layer (37) is made of quartz nano aerogel, and the reinforced high temperature fiber net (33) is made of ceramic fiber or high silica fiber.
  5. 5. A fire-proof structure of air-holder observation window according to claim 2, wherein the surface of the aerogel layer (37) is provided with a structural reinforcing net (38), and the structural reinforcing net (38) is made of stainless steel wires.
  6. 6. A fire protection structure for a gas holder observation window according to any one of claims 2 to 5, wherein the outer surface and the inner surface of the gas holder (11) are provided with the same fire protection layer as the fire protection cover (31).
  7. 7. The fire prevention structure of an air clamp observation window according to claim 1, wherein the observation window pressing plate is in a plate shape and comprises an observation window bottom plate (21) and an observation window cover plate (22), the observation window bottom plate (21) and the observation window cover plate (22) are fixed through a certain number of bolt and nut gasket assemblies (24), and the observation window glass (23) is in a plate shape and is laminated glass.
  8. 8. A fire protection structure for an air-entrained window according to claim 7, wherein the window glass (23) is PVB laminated glass.
  9. 9. A fire protection structure for a gas holder window according to claim 7, wherein the fire protection cover (31) is connected with the window pressing plate by means of screw threads or a buckle.

Description

Fire-proof structure of air clamp observation window Technical Field The utility model relates to the technical field of bridge cable facilities, in particular to a fireproof structure of an air clamp observation window. Background The main cable is the main load-bearing member of the suspension bridge, which is mainly subjected to tensile forces, and is generally made of steel materials (steel wires, steel cables, etc.) with high tensile strength. Because the main cable cannot be replaced, maintenance of the main cable is very important, and at present, the establishment of a dehumidification system is one of common main cable protection technologies, namely, dry air is sent into a main cable gap to take away moisture in the main cable. The air clamp is an important component in the dehumidification system, and an observation window is generally arranged on the air clamp. With the increase of vehicles and traffic, fire accidents caused by traffic accidents frequently happen to the cable system bridge. The cable is used as a key stress member, and although the cable has good mechanical property and weather resistance, the cable has poor fire resistance, and the main cable bearing structure can be directly damaged by burning high-temperature radiation through the air clamp, so that the whole bridge bearing system structure can be damaged, and the bridge safety is seriously threatened. The utility model provides an existing observation window, for example, grant bulletin number is "CN203878482U", the name is "a bridge cable is with gas clamp convenient to admit air exhaust and maintenance", the structure includes two semicircle arc shells (1), two semicircle arc shells (1) dock into the cylinder, all open arc observation window (2) on two semicircle arc shells (1), arc observation window (2) department has inlayed the arc transparent glass that links to each other with semicircle arc shells (1). The glass fire-proof system has the advantages that 1, the observation window is exposed and has no fire-proof function, the fire-proof system belongs to a weak link in the whole main cable fire-proof system, once a fire disaster occurs, high-temperature radiation of flame acts on the observation window, glass is easy to break, and the high temperature causes fatal damage to an internal main cable, 2, the observation window is of a curved surface/arc-shaped structure, and because the curvature of the curved surface glass is required to be accurately matched with the curved surface of the air clamp, the universality among the curved surface glass with different curvatures is poor, and once the specification of the air clamp is changed, the original curved surface glass can not be used any more and needs to be manufactured again. In addition, the sealing plate for fixing the curved glass is required to be specially customized according to the curvature, so that the universality is limited, 3, when the curved glass is installed, if the curvature of the curved glass is not matched with that of an air clamp curved surface, or the curvature of the sealing plate is inconsistent with that of the curved glass, the sealing performance is affected, uneven stress on the glass is easily caused, under the action of internal pressure or external impact of the air clamp, the glass is likely to crack or even break, hidden danger is caused to the protection function of the air clamp, and hidden danger is also caused to operators and surrounding environment, 4, the impact resistance and penetration resistance of common glass are poor, sharp fragments are likely to be formed after breaking, the damage to passing vehicles and personnel is likely to be caused, the safety is insufficient, and in addition, the heat insulation performance, ultraviolet blocking performance, sound insulation performance and the like of the common glass are poor. Disclosure of utility model The utility model aims to solve the defects in the prior art, and provides a fireproof structure of an air clamp observation window, which has good fireproof performance, and when a fire disaster occurs, a fireproof cover can bear high temperature, so that common curved glass is prevented from being broken due to thermal shock, the integrity of the observation window is maintained, and effective protection is provided for a main cable. In order to achieve the above purpose, the utility model adopts the following technical scheme: The utility model provides a fire prevention structure of gas holder observation window, the gas holder is cylindricly, including last gas holder and lower gas holder, upward be provided with the opening on gas holder and/or the lower gas holder, the opening part is provided with the observation window, the observation window includes observation window clamp plate and observation window glass, is provided with the fire prevention lid outward by the observation window clamp plate. The upper air clamp and the lower air clamp are semi-cylindrical, and