山东电缆桥架：电缆桥架的选择

来源：http://www.sdhangfeng.com 发布于：2024/05/07

　　电缆桥架的选择

　　Selection of cable tray

　　1.1 结构类型选择：

　　1.1 Structural Type Selection:

　　1.1.1 槽式桥架：槽式桥架是一种全封闭型桥架。它适用于规划计算机电缆、通讯电缆、热电偶电缆及其他高灵敏体系的操控电缆等。它对操控电缆的屏蔽搅扰和重腐蚀中环境电缆的防护都有较好的效果。

　　1.1.1 Slot type cable tray: Slot type cable tray is a fully enclosed type of cable tray. It is most suitable for planning control cables for computer cables, communication cables, thermocouple cables, and other highly sensitive systems. It has good effects on shielding and protecting cables from interference and heavy corrosion in the environment.

　　1.1.2 梯级式桥架：一般适用于直径较大电缆的敷设，特别适用于高、低压动力电缆的敷设。具有重量轻、成本低、造型别具、安装方便、散热、透气性好等有等优点。

　　1.1.2 Cascade cable tray: generally suitable for laying cables with larger diameters, especially for laying high and low voltage power cables. It has advantages such as light weight, low cost, unique design, convenient installation, good heat dissipation, and breathability.

　　1.1.3 托盘式桥架：由带散热孔的底板和与底板为一个整体的侧板组成或由带散热孔的底板与底板连接的侧板组成的槽形组件，优势在于载荷大和散热好，主要就是用于铺设截面大但是数量比较小的电力电缆，托盘式桥架由于开了散热孔，托盘式桥架板材的厚度建议要更厚些。

　　1.1.3 Tray type cable tray: A trough component composed of a bottom plate with heat dissipation holes and a side plate integrated with the bottom plate, or a side plate connected to the bottom plate with heat dissipation holes. Its advantages are large load and good heat dissipation. It is mainly used for laying power cables with large cross-sections but small quantities. Due to the opening of heat dissipation holes, the thickness of the tray type cable tray plate is recommended to be thicker.

　　1.1.4 组合式电缆桥架：是一种新型桥架，是电缆桥架系列中的第二代产品。它适用各项工程、各种单位、各种电缆的敷设，它具有结构简单、配置灵活、安装方便、形式新颖等特点。

　　1.1.4 Combination cable tray: It is a new type of cable tray and the second generation product in the cable tray series. It is suitable for laying various projects, units, and cables. It has the characteristics of simple structure, flexible configuration, convenient installation, and novel form.

　　1.2 材料选择

　　1.2 Material selection

　　1.2.1 钢质电缆桥架：具有出色的强度和耐久性，能够承受重量和各种环境条件的影响。可以在长期使用和恶劣环境中保持稳定的结构；能够承受大量电缆的重量，包括较大直径和重型电缆。能够提供稳固的支撑和保护，确保电缆不会下垂或受到损坏；钢材具有较高的耐火性能，可以提供较高的火灾性；具有良好的电磁屏蔽性能，可以减少或阻止电磁干扰对电缆的影响。这对于需要保护敏感电子设备或信号传输的应用非常重要。

　　1.2.1 Steel cable tray: It has excellent strength and durability, and can withstand the influence of weight and various environmental conditions. Can maintain stable structure in long-term use and harsh environments; Capable of withstanding a large amount of cable weight, including larger diameter and heavy-duty cables. Can provide stable support and protection to ensure that cables do not sag or be damaged; Steel has high fire resistance and can provide high fire safety; Having good electromagnetic shielding performance, it can reduce or prevent the impact of electromagnetic interference on cables. This is crucial for applications that require the protection of sensitive electronic devices or signal transmission.

　　1.2.2 铝合金电缆桥架：铝合金电缆桥架由铝合金挤压成型，尺寸精度高、强度好、重量轻、承载能力大（其中）大跨距盘式直通可以满足6米的承载力、结构简单、安装方便、外形美观、式样独特，铝合金电缆桥架表面喷砂氧化生成一层天然的氧化保护膜，对大气和化学介质具有很强的耐腐蚀能力。

　　1.2.2 Aluminum alloy cable tray: Aluminum alloy cable tray is extruded from aluminum alloy, with high dimensional accuracy, good strength, light weight, and large bearing capacity. The large-span disc type straight through can meet a bearing capacity of 6 meters, has a simple structure, convenient installation, beautiful appearance, and unique style. The surface of aluminum alloy cable tray is sandblasted and oxidized to form a natural oxide protective film, which has strong corrosion resistance to atmospheric and chemical media.

　　1.2.3 玻璃钢电缆桥架：主要材质是玻璃纤维、增强塑料和阻燃剂；自重比较轻，承载能力，使用寿命比较长，但是钢制电缆桥架的3倍。玻璃钢电缆桥架重要的特点就是在安装的时不需使用火，使得玻璃钢电缆桥架在爆炸危险环境中的应用特别大。玻璃钢电缆桥架常被用于维修起来比较麻烦的地方，比如在容易受到大气腐蚀的室外建筑上、化工厂、海边、隧道等。

　　1.2.3 Fiberglass cable tray: The main materials are fiberglass, reinforced plastic, and flame retardant; It has a relatively light weight, strong load-bearing capacity, and a relatively long service life, but its price is three times that of steel cable trays. The most important feature of fiberglass cable trays is that they do not require the use of fire during installation, making them particularly suitable for use in explosive hazardous environments. Fiberglass cable trays are often used in places where maintenance is difficult, such as outdoor buildings that are prone to atmospheric corrosion, chemical plants, beaches, tunnels, etc.

　　1.2.4 不锈钢电缆桥架：采用的是304不锈钢材质经过裁剪、折弯制作而成的一种桥架，不锈钢电缆桥架具有非常耐腐蚀、耐冲击、不易锈蚀的特点。

　　1.2.4 Stainless steel cable tray: It is a type of tray made of 304 stainless steel material that has been cut and bent. Stainless steel cable trays have the characteristics of being very corrosion-resistant, impact resistant, and not easily corroded.

　　1.3 表面防腐层类别选择

　　1.3 Selection of types of surface anti-corrosion coatings

　　1.3.1 热浸锌电缆桥架：将钢构件侵入600°C左右高温融化的锌液中，使得桥架表面附着厚厚的锌层。适用于室外重腐蚀环境，造价高

　　1.3.1 Hot dip galvanized cable tray: Immerse steel components into a molten zinc solution at around 600 ° C, causing a thick zinc layer to adhere to the surface of the tray. Suitable for outdoor heavily corrosive environments with high cost

　　1.3.2 冷浸锌电缆桥架：利用电解反应将锌离子析出,镀覆在钢材基体表面,形成较薄的锌镀层。抗腐蚀性能较弱,仅适用于轻度腐蚀环境，造价一般。

　　1.3.2 Cold dip zinc cable tray: Using electrolytic reaction to precipitate zinc ions, coating them on the surface of the steel substrate, forming a relatively thin zinc coating. Weak corrosion resistance, only suitable for mild corrosive environments, with average cost.

　　1.3.3 喷塑桥架：经过表面加工一层静电粉末喷塑而成，使得桥架表面光滑亦可根据环境选择搭配颜色，有抗腐蚀、耐磨、防水等性能。安装适用于室内常温干燥环境，一般。

　　1.3.3 Spray coated cable tray: It is made by surface processing with a layer of electrostatic powder spray coating, making the surface of the cable tray smooth. It can also be matched with colors according to the environment, and has anti-corrosion, wear-resistant, waterproof and other properties. The installation is suitable for indoor normal temperature and dry environments, and the price is average.

　　1.4 防火等级选择

　　1.4 Fire protection level selection

　　电缆桥架在有防火要求的区段内，可在电缆梯架、托盘内添加具有耐火或难燃性能的板、网等材料构成封闭或半封闭式结构，并采取在桥架及其支吊架表面涂刷防火涂层等措施，其整体耐火性能应满足有关规范或标准的要求。

　　In sections with fire protection requirements, cable trays can be enclosed or semi enclosed by adding fire-resistant or flame-retardant materials such as boards and nets to cable ladders and trays. Measures such as applying fire-resistant coatings on the surface of the cable tray and its supports and hangers should be taken, and its overall fire resistance performance should meet the requirements of relevant national regulations or standards.

　　在工程防火要求较高的场所，不宜采用铝合金电缆桥架。

　　Aluminum alloy cable trays should not be used in places with high requirements for fire prevention in engineering.

　　1.5 规格尺寸选择

　　1.5 Specification and Size Selection

　　电缆桥架规格选择主要考虑以下几个方面:

　　The selection of cable tray specifications mainly considers the following aspects:

　　1.5.1 电缆填充率：电缆总截面积与托盘内横断面积的比值，电力电缆不应大于40%；控制电缆不应大于50%。

　　1.5.1 Cable filling rate: The ratio of the total cross-sectional area of the cable to the cross-sectional area inside the tray, for power cables, should not exceed 40%; Control cables should not exceed 50%.

　　1.5.2 承载能力: 所选电缆桥架的工作载荷应满足工作载荷要求。

　　1.5.2 Bearing capacity: The safe working load of the selected cable tray should meet the working load requirements.

　　根据《T 10216-2013 电控配电用电缆桥架》、《T/CECS 31-2017 钢制电缆桥架工程技术规程》规定：

　　According to T 10216-2013 Electrical Control Distribution Cable Tray and T/CECS 31-2017 Steel Cable Tray Engineering Technical Regulations:

　　实际跨距下的允许工作载荷计算:

　　Calculation of allowable working load under actual span:

　　qG ≤ qE*(L/LG)2

　　QG ≤ qE * (L/LG) 2

　　其中：qG - 允许工作载荷(N/m)

　　Among them: qG - allowable working load (N/m)

　　qE - 产品工作载荷(N/m)

　　QE - Product Safety Working Load (N/m)