橋架防火封堵規(guī)范到底怎么做呢？山東電纜橋架廠家認為，我們先來看防火封堵材料都有哪些？防火封堵材料應具有耐火及熱膨脹等基本性能，我們再結合工程實際應用情況，總結如下：

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:

·有機防火堵料

·Organic fireproof blocking material

包括：防火泥、防火密封膠，可塑性好，適用于不規(guī)則形狀處、貫穿物考慮更換的場合。

Including: fireproof mud and fireproof sealant, with good plasticity, suitable for occasions where irregular shapes and penetrations are considered for replacement.

·無機防火堵料

·Inorganic fireproof blocking material

又稱防火灰泥，能夠快速固化，適用于封堵后貫穿物基本不變的場合。

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，適用于較大孔洞、貫穿物考慮更換的場合。

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、防火噴涂礦棉板，機械強度高，適用于較大孔洞、兼顧承載功能。

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

內部填充阻燃膨脹材料的金屬卡箍，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

能夠形成耐火隔熱保護層，可涂刷在電纜及構筑物表面

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，還有防火模塊、防火泡沫等。

In addition, there are fireproof modules, fireproof foam, etc.

這些材料往往不是單一、而是通過兩種或多種的靈活組合，共同完成管道系統(tǒng)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.

下面我們就基于當前工程實際應用情況，看一看機電工程中各處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.

電纜橋架貫穿樓層孔洞：

Cable tray penetrates floor holes:

1.橋架貫穿樓層時，應注意電纜與橋架之間要用防火堵料隔開，確保電纜與橋架之間形成1cm距離。

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.電纜橋架應與墻體保持不小于5cm的間距，小于5cm的應擴大5cm以上，內部、外部同時封堵形成一體，橋架外部封堵厚度可與樓板一致，橋架內部應保證不小于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，橋架下端用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電纜橋架

① Fireproof board ③ fire retardant sealing package ⑤ cable tray

②固定螺絲④電纜

② Fixed screw ④ cable

電纜橋架穿墻孔洞：

Cable tray through wall hole:

1.電纜橋架穿墻的封堵方法與1-1-1相同，如果電纜直徑大于2cm時，在封堵前應在封堵部位向雙方向涂刷各1.5延長米的電纜涂料，然后再進行封堵。

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.防火板內沿應與橋架保持1cm距離。

2. The inner edge of the fireproof board should be kept 1cm away from the bridge.

①防火板②電纜橋架③阻火密封包

① Fireproof board ② cable tray ③ fire retardant sealing package

④電纜⑤固定螺絲

④ Cable ⑤ fixing screw

配電室進出電纜封堵：

Sealing of incoming and outgoing cables in the distribution room:

1．如圖1-5-1的封堵方法外，配電柜出入電纜的分線處和連接處也要進行封堵，封堵體積的周邊四周，與電纜的相隔距離不得小于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.

一般情況下應采取停電施工，如需帶電作業(yè)，應確保施工距離，現(xiàn)場必須設有電工人員進行監(jiān)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配電盤②電纜③阻火密封包

① Distribution panel ② Cable ③ Flame retardant sealing package

電纜槽盒穿墻孔洞：

Cable tray through wall holes:

1.電纜槽盒的封堵是防火封堵中非常重要的一個環(huán)節(jié)，在封堵時，應特別注意槽盒內的封堵質量。

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.封堵部位的墻體厚度相同，內部應確保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電纜②防火板③阻火密封包

① Cable ② Fire resistant board ③ Fire resistant sealing package

④電纜槽盒⑤固定螺絲

④ Cable tray ⑤ fixing screws

電纜貫穿樓層槽盒內封堵：

Sealing of cables passing through floor slots and boxes:

1.槽盒貫穿樓層的封堵，應槽盒內鋼吊架的安裝方法，具體安裝見圖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.槽盒內封堵厚度不得小于24cm，遇槽盒電纜較多的情況，須在電纜縫隙之間適當填入非硬化堵料，使之更加嚴密。

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防火板封蓋。

3. Cover the outer lower end of the slot box with a 5-8mm fireproof board.

①電纜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固定螺絲

⑤ Fixing screws

橋架防火封堵規(guī)范就從以上內容中可以了解到，還有什么疑惑或者需求，就來我們網站http://m.ymmgjx.net看看吧！

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 http://m.ymmgjx.net Take a look!