桥架防火封堵规范到底怎么做呢？
山东电缆桥架厂家认为，我们先来看防火封堵材料都有哪些？防火封堵材料应具有耐火及热膨胀等基本性能，我们再结合工程实际应用情况，总结如下：
What are the standards for fire prevention and sealing of cable trays? The manufacturer of cable tray in Shandong thinks that we should first look at the fireproof sealing materials? Fireproof sealing materials should have basic properties such as fire resistance and thermal expansion. Based on practical engineering applications, we summarize as follows:
·有机防火堵料
·Organic fireproof blocking material
包括：防火泥、防火密封胶，可塑性好，适用于不规则形状处、贯穿物考虑更换的场合。
Including: fireproof mud and fireproof sealant, with good plasticity, suitable for occasions where irregular shapes and penetrations are considered for replacement.
·无机防火堵料
·Inorganic fireproof blocking material
又称防火灰泥，能够快速固化，适用于封堵后贯穿物基本不变的场合。
Also known as fireproof plaster, it can quickly solidify and is suitable for situations where the penetration remains basically unchanged after sealing.
·阻火包
·Flame retardant package
施工便捷，适用于较大孔洞、贯穿物考虑更换的场合。
Convenient construction, suitable for situations where large holes and penetrations are considered for replacement.
·防火板
·Fireproof board
包括：防火隔板、防火喷涂矿棉板，机械强度高，适用于较大孔洞、兼顾承载功能。
Including: fireproof partition board, fireproof spray mineral wool board, with high mechanical strength, suitable for large holes and bearing functions.
·阻火圈
·Flame retardant ring
内部填充阻燃膨胀材料的金属卡箍，可固定在塑料管道外壁。
A metal clamp filled with flame retardant expansion material can be fixed on the outer wall of plastic pipes.
·防火涂料
·Fireproof coating
能够形成耐火隔热保护层，可涂刷在电缆及构筑物表面
Capable of forming a fire-resistant and thermal insulation protective layer, which can be applied to the surface of cables and structures
除此之外，还有防火模块、防火泡沫等。
In addition, there are fireproof modules, fireproof foam, etc.
这些材料往往不是单一、而是通过两种或多种的灵活组合，共同完成管道系统的防火封堵。
These materials are often not single, but through two or more flexible combinations to jointly complete the fire sealing of pipeline systems.
下面我们就基于当前工程实际应用情况，看一看机电工程中各处防火封堵施工的典型做法。
Let's take a look at the typical methods of fire prevention and sealing construction in various parts of mechanical and electrical engineering based on the current practical application situation.
电缆桥架贯穿楼层孔洞：
Cable tray penetrates floor holes:
1.桥架贯穿楼层时，应注意电缆与桥架之间要用防火堵料隔开，确保电缆与桥架之间形成1cm距离。
When the cable tray runs through the floor, attention should be paid to using fireproof blocking materials to separate the cables from the tray, ensuring a distance of 1cm between the cables and the tray.
2.电缆桥架应与墙体保持不小于5cm的间距，小于5cm的应扩大至5cm以上，内部、外部同时封堵形成一体，桥架外部封堵厚度可与楼板一致，桥架内部应保证不小于24cm。
2. The distance between the cable tray and the wall shall be no less than 5cm. The distance between the cable tray and the wall shall be no less than 5cm. The distance between the cable tray and the wall shall be expanded to more than 5cm. The internal and external plugging shall be integrated. The thickness of the external plugging of the cable tray can be the same as that of the floor. The internal plugging of the cable tray shall be no less than 24cm.
3.封堵完成后，桥架下端用5-8mm防火板封口。
After the sealing is completed, the lower end of the bridge should be sealed with a 5-8mm fireproof board.
①防火板③阻火密封包⑤电缆桥架
① Fireproof board ③ fire retardant sealing package ⑤ cable tray
②固定螺丝④电缆
② Fixed screw ④ cable
电缆桥架穿墙孔洞：
Cable tray through wall hole:
1.电缆桥架穿墙的封堵方法与1-1-1相同，如果电缆直径大于2cm时，在封堵前应在封堵部位向双方向涂刷各1.5延长米的电缆涂料，然后再进行封堵。
1. The plugging method of cable tray through the wall is the same as 1-1-1. If the cable diameter is greater than 2cm, the plugging part shall be coated with 1.5 linear meters of cable coating in both directions before plugging.
2.防火板内沿应与桥架保持1cm距离。
2. The inner edge of the fireproof board should be kept 1cm away from the bridge.
①防火板②电缆桥架③阻火密封包
① Fireproof board ② cable tray ③ fire retardant sealing package
④电缆⑤固定螺丝
④ Cable ⑤ fixing screw
配电室进出电缆封堵：
Sealing of incoming and outgoing cables in the distribution room:
1．如图1-5-1的封堵方法外，配电柜出入电缆的分线处和连接处也要进行封堵，封堵体积的周边四周，与电缆的相隔距离不得小于24cm。
In addition to the sealing method shown in Figure 1-5-1, the branching and connecting points of the incoming and outgoing cables of the distribution cabinet should also be sealed. The surrounding area of the sealing volume should not be less than 24cm away from the cables.
一般情况下应采取停电施工，如需带电作业，应确保安全施工距离，现场必须设有电工人员进行安全监理。
In general, power outage construction should be adopted. If live working is required, a safe construction distance should be ensured, and professional electricians must be present on site for safety supervision.
①配电盘②电缆③阻火密封包
① Distribution panel ② Cable ③ Flame retardant sealing package
电缆槽盒穿墙孔洞：
Cable tray through wall holes:
1.电缆槽盒的封堵是防火封堵中非常重要的一个环节，在封堵时，应特别注意槽盒内的封堵质量。
1. The sealing of cable trays is a very important part of fire prevention sealing, and special attention should be paid to the sealing quality inside the trays during sealing.
2.封堵部位的墙体厚度相同，内部应确保24cm以上(含24cm)。
2. The wall thickness of the sealing area should be the same, and the interior should be ensured to be over 24cm (including 24cm).
①电缆②防火板③阻火密封包
① Cable ② Fire resistant board ③ Fire resistant sealing package
④电缆槽盒⑤固定螺丝
④ Cable tray ⑤ fixing screws
电缆贯穿楼层槽盒内封堵：
Sealing of cables passing through floor slots and boxes:
1.槽盒贯穿楼层的封堵，应重点槽盒内钢吊架的安装方法，具体安装见图1-3-4。
1. The sealing of the trough box penetrating the floor should focus on the installation method of the steel hanger inside the trough box, as shown in Figure 1-3-4 for specific installation.
2.槽盒内封堵厚度不得小于24cm，遇槽盒电缆较多的情况，须在电缆缝隙之间适当填入非硬化堵料，使之更加严密。
2. The sealing thickness inside the slot box shall not be less than 24cm. In case of a large number of cables in the slot box, non hardening sealing materials must be appropriately filled between the cable gaps to make them more tight.
3.槽盒外部下端用5-8mm防火板封盖。
3. Cover the outer lower end of the slot box with a 5-8mm fireproof board.
①电缆②防火板③阻火密封包④槽盒
① Cable ② Fire resistant board ③ Fire resistant sealing package ④ Slot box
⑤固定螺丝
⑤ Fixing screws
From the above content, we can understand the specifications for fire prevention and sealing of bridge structures. If you have any doubts or needs, please come to our website //www.comprepyme.com Take a look!
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槽式电缆桥架安装高度为什么有标准？
