What are the flow adjustment methods for nozzle flow calculation and metering pump?

『Calculation of nozzle flow rate』Related information(clamp on meter|electromagnetic meter|venturi meterrotameter|orifice meter|ultrasonic flow meter|mass flow meter|coriolis mass flow meter|coriolis flow meter|magnetic flow meter|magmeter flow meter|magflow flow meter|mag meter flow meter|electromagnetic flow meter|vortex flow meter|turbine flow meter|thermal mass flow meter|thermal flow meter|rotameter flow meter)

1. Calculation formula for flow rate of fire sprinkler head

Calculation of flow characteristic coefficient: The calculation formula for flow characteristic coefficient K is: \ [K=\ frac {Q} {10P ^ {0.5}} \], where - Q represents the flow rate of the sprinkler head, in liters per minute (L/min); -P represents pressure, measured in megapascals (MPa). Determination of nozzle flow characteristic coefficient: The K value of the nozzle flow characteristic coefficient determined by testing according to the method in Article 5.3 should meet the requirements in Table 3. Requirements for water distribution performance: The nozzle should undergo a water distribution test according to Article 5.4, and the uniformity of its water distribution and dissipation should comply with the provisions of Table 4 of the Sen Tan.

2. What are the flow regulation methods for metering pumps?

3. How to calculate the flow coefficient of the sprinkler head?

1. The flow coefficient of the sprinkler head is represented by k, which can be determined by checking the diameter of the nozzle. Normally, the flow coefficient of a nozzle with a diameter of DN15 is 80, and the flow coefficient of a nozzle with a diameter of DN20 is 115. Hall photography 2. The flow characteristic coefficient K value of the nozzle should meet the standard: for wet nozzles, when the nominal diameter of the nozzle is DN15, the K value is 80 ± 4; For dry nozzles, the K value is 80 ± 6

3. The calculation formula for the flow coefficient K is: K=Q/(√ 10 × √ P), where Q represents flow rate (unit: L/min) and P represents pressure (unit: MPa)

4. When the sprinkler nozzle is marked as K80, it means that the required flow characteristic coef

5. Fire sprinklers currently do not usually use stainless steel or brass nozzles, but use other materials. The nozzle model is usually a water mist nozzle, which is divided into the following types: - Classified by nozzle structure: closed and open. -Classified by heat sensitive components: glass ball and fusible element nozzle. -Classified by installation method and water spray form: upright type, hanging type, ordinary type, side wall type, ceiling type. -Special types of nozzles: dry, automatic opening and closing nozzles

6. The main differences between these nozzles are based on the system requirements and installation methods, and there is no clear distinction between advantages and disadvantages. For example, the difference between closed and open type orange spray nozzles mainly lies in the spray speed and flow rate; The difference between regular and drooping nozzles lies in the direction and proportion of water spraying, which cannot be considered as advantages or disadvantages, but should be selected according to actual needs. Reference: - Baidu Baike - Nozzle - Baidu Baike - Nozzle Flow

4. How to calculate the nozzle flow?

The nozzle flow rate is represented by q, q=K√10P。 P - The working pressure of the water mist nozzle is MPa. K - Flow coefficient of water mist nozzle, provided by the manufacturer. Fire sprinkler pump and fire booster pump shall be determined according to the actual situation of use. The pump type used is similar to that of the fire protection system, but the head and flow rate are different. Fire pumps are mainly divided into vertical fire pumps and horizontal fire pumps. The flow rate of the transported liquid is one of the importan

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