Qijia classroom: How to estimate the amount of water pipes for hydropower reform?

Water pipes are an indispensable part of hydropower renovation and building materials. Then do you know how to estimate the amount of decoration pipes? Let's learn about the method of estimating water pipes.

White Butterfly

1. Confirm the location and specification of the entrance pipe

The main riser is usually installed in the tube well next to the air ducts in the bathroom and kitchen. There are also some well-mounted risers usually located in the corner of the room. The horizontal pipe is usually connected to the water meter and used as a plastic pipe for the horizontal pipe. Outer diameter specifications can be used dn20dn25dn32 several different specifications.

2. Confirm the specification, location and quantity of water points

The dwelling water point (faucet) of a general residence has a diameter of dn16 or dn20. The transition between the end branch pipe and the general horizontal pipe or the horizontal pipe branch pipe needs to be carried out using pipe fittings (three links, reduced diameter tee or elbow), and they are connected to different ones. Water point at the end.

3. Confirm the installation distance from the water point to the ground

The dishwashing pond is usually 450mm from the ground, and the washing machine is 800mm-1200mm from the ground, depending on the washing machine model.

After taking into account the above factors, the amount of water pipes used can be estimated more accurately. That is, the total amount of water pipes used = total household level pipe + pipe fittings (reduced diameter tee and elbow) + terminal water pipe.

Precautions

1. Household level pipe: The main pipe behind the water meter.

2, the end of the branch: connect the water taps.

3. Different types of houses and different numbers of water points will result in different estimation results, depending on the circumstances.

For example, residential buildings without municipal hot water, household water pipes dn25, bathroom with 6m2, one washing machine, one wash basin, one mop pool, one toilet, one bathtub, one water heater, use PE-RTII water pipes, the basic usage is estimated as follows :

Water meter: d25 inner silk plastic copper 1

Connected with tap water: d25-16-25 three-way five, d25-16 diameter one, d25 elbow 2, d16 elbow, 16-1/2 nozzle joint 6

Water heater: d20-16-16 three-way one, d16 elbow 1, 16-1/2 nozzle joint 2, 20-1/2 nozzle joint 1, water pipe: d25 tube 3 meters, d20 tube 6 meters, d16 tube 3 meters (Note: The water pipe specification is 3 meters/root)

Hydroelectricity renovation plumbing experience in tap faucet residential room decoration

Chemical Industry Mass Flow Meter

Sealand is a professional supplier of Chemical Mass Flow Meter, Chemical Mass Flowmeter, Chemical Flowmeter, Chemical Flow Meter, Chemical Coriolis Meter, ATEX, IECEx & CE approved.

The meter can work with a pulse receiver(Count). The connection is as follows. The resistance value is up to the cable length & the max. input pulse frequency of receiver. Current 10mA is suitable for most receivers; however, you can reduce the resistance value when the cable is long. The max. current could be 50mA. Please use the fixed frequency output function to check if the cable length & resistance value is suitable.

Please check following items before operation, and operate according to relevant rules. a) If the meter is damaged during shipment and installation;
b) If the voltage is same as marked on nameplate;
c) If the fuse is correct;

d) If the meter is grounded properly.
e) If the Meter SN on the nameplate of sensor and transmitter are the same.
If everything is fine, please open all valves, make the pipeline full of liquid and then power on the meter for warm-up for 20min before operation. Finally, conduct zero calibration after first start, and shall do it again if the meter is moved to another site.
Preparation for zero calibration:
a) Power on the meter for approximately 20min for warm-up;
b) Run the process fluid through the sensor until the sensor temperature reaches the normal process operating temperature.
c) Close the shutoff valve downstream from the sensor.
d) Ensure that the sensor is filled with fluid and the process flow has completely stopped.

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Zhejiang Sealand Technology Co., Ltd. , https://www.sealandflowmeters.com