The specifications of the heat collector mainly refer to the data information about diameter and area. The knowledge of these sections is also the key knowledge that everyone will inevitably encounter in actual use, and they can also help It serves as a reference. For example, when faced with a wide range of products on the market, we can use this information for learning reference and help determine suitable products and solutions. In addition, installation operations also need to be studied in accordance with comprehensive standards and specifications to avoid unnecessary trouble.
1. Specifications of heat collecting cover
Rectangular and circular specifications say that the area of ??the heat collecting plate should not be less than 1200mm2, and the smallest side should not be less than 200mm and the flange should be 20mm.
For details, please check the Code?of?design?for?sprinkler?systems
GB?50084-2001 (2005? Edition).
The fire sprinkler heat collecting cover is a special accessory product designed for sprinkler heads. It is divided into two types: rectangular and round. The upward spray nozzle and the downward spray nozzle use circular heat collectors. Cover, side spray nozzle uses rectangular heat collecting cover. According to the relevant regulations of the "Design Code for Automatic Sprinkler Systems" GB50084-2005, the area of ??the fire sprinkler collector cover should not be less than 1200mm?, and the smallest side should not be less than 200mm and the flange should be 20mm. The diameter of the fire sprinkler heat collecting cover is available in three sizes: DN200, DN300 and DN400. The outer diameter of the DN200 heat collecting cover is 19cm, the outer diameter of the DN300 heat collecting cover is 29cm, and the outer diameter of the DN400 heat collecting cover is 37cm. . The size of the side spray nozzle heat collecting cover is 150cm*200cm.
2. Installation specifications for fire sprinkler heat collecting covers
1. When the distance between the installation position of the fire sprinkler head and the roof is greater than 30CM, a heat collecting cover should be installed;
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2. Fire sprinkler heat collecting covers are divided into upward spray type, downward spray type and side spray type. The heat collecting cover is selected according to the installation situation of on-site sprinkler. The area of ??the heat collecting cover should not be less than 1200mm?.
3. In order to facilitate heat collection, the periphery of the heat collecting water baffle is required to be bent downward, and the height of the bent edge must be flush with the nozzle splash plate.
4. If there are holes or gaps above the nozzles in the shelves, a heat collecting cover should be installed above the nozzles.
According to the relevant national fire protection design codes, the installation specifications for fire sprinkler collector covers are as follows:
1. Based on the "Design Code for Automatic Sprinkler Fire Extinguishing Systems" GB50084-2005 stipulates that when there are holes or gaps above the fire sprinkler head, in order to prevent the sprinkler head from being unable to start because the hot air flow does not stay or the upper sprinkler head is sprayed with water to cool down, it is stipulated that a heat collecting cover should be installed above the sprinkler head.
2. According to the "Fire Protection Design Code for Garages, Repair Garages, and Parking Lots" GB50067-97, mechanical three-dimensional garages and duplex garages are arranged in layers according to the position of the parking pallet. The nozzle should be equipped with a heat collecting cover above it
The above introduction to the specifications of the heat collecting cover includes the appearance of the product and the knowledge of the diameter plate, such as the nozzle heat collecting cover that has reference value for consumers. The size aspect is information worth helping you determine the appropriate solution during the selection and purchase process. In addition, it is not enough to just know the size of the nozzle heat collecting cover. What is more specific is the content of the installation specifications section. The last information mentioned above is related to this knowledge and is also information worthy of reference by professionals. .