Welcome to the official website of Chengde longzhida Intelligent Instrument Technology Co., Ltd!

  Chengde longzhida Intelligent Instrument Technology Co., Ltd

HOME  |  中文版

  Chengde longzhida Intelligent Instrument Technology Co., Ltd
  Chengde longzhida Intelligent Instrument Technology Co., Ltd

Consultation hotline

15930084101

After-sale service

Contact

ContactHotline:
 
ContactAfter-sales installation:
 
ContactProduct inquiry purchase:
 
ContactAfter-sales maintenance:
 
ContactAdd:
No.3, longzhida Road, electronic industrial park, high tech Industrial Development Zone, Chengde City, Hebei Province
/
-
What to do if the water meter reading is not allowed to rotate

常见问题详情

What to do if the water meter reading is not allowed to rotate

  • Categories: 常见问题
  • Time of issue: 2020-12-31 14:57:13
  • Views: 0

Description:

Answer:

The water meter rotation may have one or several of the following reasons

 

1. The user's indoor pipeline or water appliance leaks. It is easy to find leaks in the taps of general users. However, due to the large-scale application of concealed projects in modern buildings, the water supply pipelines of many buildings are buried underground or in walls. It is difficult to detect the leakage of the pipelines laid by this method. At this time, the user is actually Water is used, but the water flows slowly in the pipe.

 

2. Water users illegally use water. In daily life water, individual users, especially users in areas with low water pressure, in order to use water appliances (mostly shower appliances) in their homes, install pumps directly on the tap water pipes in their homes. When the water pump or valve is started or stopped, water hammer often occurs, impacting the water meter impeller to make the water meter rotate.

 

3. The pipeline water pressure fluctuates. As a kind of liquid, water has compressibility when the pressure of water supply pipeline is high. Pressure fluctuations in the water pipeline are inevitable. When the pressure in the main network increases, the volume of water in the pipeline after the meter decreases due to the increase in pressure. At this time, a small amount of water passes through the water meter to produce a positive rotation. turn. Since the resistance of the internal gear of the water meter is greater than the resistance during the forward rotation, even if the water intake at both ends of the water meter is the same, the readings reflected on the water meter will be different, and the overall performance is forward rotation.

 

4. Dissolved gas in water overflows. A large amount of gas will be dissolved in the production process of tap water, and gas will accumulate in the pipeline during pipeline construction. If the home does not use water for a long time or the pipeline design is unreasonable, the highest point or protruding point of the pipeline will generate air bags. Due to the strong compressibility of gas, if there are pressure fluctuations in the pipeline at this time, the space in the pipeline behind the meter will expand and contract, so the water meter will produce a greater amount of rotation. At present, most users' water meters rotate due to the existence of air bags in the pipes behind the meters.

 

5. Improper design and construction of water supply pipeline facilities. When installing the water meter, the necessary straight pipe sections or equivalent water flow rectifiers should be installed upstream and downstream of the water meter (upstream straight pipe length ≥ 10D, downstream straight pipe length ≥ 5D, and the water rotation caused by the bent pipe and the water pump must be Install the rectifier device before the straight pipe section) so as not to affect the accuracy of water meter measurement. However, in actual construction, due to limited space in the pipeline gallery, or poor management, the workers did not operate as required, and the water meter installation was not standardized.

 

Take appropriate control methods according to different reasons:

 

1. Replace all the pipes in the home that have been in disrepair for a long time, and check the water appliances such as toilets and concealed pipes one by one to reduce unnecessary water expenses.

 

2. Once someone is found to use water in violation of regulations, they should immediately report to the water supply company to eliminate the phenomenon of illegal water usage.

 

3. Water compression due to pipeline pressure fluctuation is one of the reasons for the rotation of the water meter. Consider installing a check valve to prevent the water from flowing back. To facilitate installation, a water meter with a built-in check valve can be selected. Due to the high frequency of residential water use and the small fluctuations in pipeline pressure, the quality and sensitivity of the check valve should be paid attention to when selecting check valves or water meters.

 

4. In order to effectively remove the gas in the pipeline and avoid the occurrence of airbags, attention should be paid to: rationally arrange the exhaust valve when designing the pipeline; reduce pipe bends and bending points when installing the pipeline at home, and design the highest point of the pipeline at the frequently used faucet; The valve should be opened slowly when the new pipeline passes water for the first time, and the gas in the pipeline should be emptied as much as possible; the dead water pipe section that appears during the household meter reformation is easy to produce airbags, so try to remove or modify it; when the water meter is designed and installed, ensure that the straight pipe section meets the installation requirements of measuring instruments.

 

Water meter rotation is a problem caused by comprehensive factors. Users are requested to check the reasons for inaccurate water meter readings. Existing methods can significantly reduce the phenomenon of rotation. At the same time, users are reminded to purchase high-quality, guaranteed after-sales water meter manufacturers' products.

Previous article: How to use water mixer

Next article: None

Contact

 

Add:No.3, longzhida Road, electronic industrial park, high tech Industrial Development Zone, Chengde City, Hebei Province

Hotline: 15930084101
After-sales installation: 0314-7018122 18603149003
Product inquiry purchase: 15930084101
After-sales maintenance: 18603149003

E-mail:310540860@qq.com
Website: www.cdlong.com

  Chengde longzhida Intelligent Instrument Technology Co., Ltd

Enter mobile website

Copyright© Chengde longzhida Intelligent Instrument Technology Co., Ltd

Chengde longzhida Intelligent Instrument Technology Co., Ltd