Micro-flow metering aid valve used in water meter

A small flow, water meter technology, applied in safety valves, balance valves, valve devices, etc., can solve problems such as inaccurate charging, difficulty in metering and management, waste of fresh water resources, etc.

Inactive Publication Date: 2006-12-20
郑国清
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the low sensitivity of this water meter, it cannot charge accurately
Drips that cause small flows are common, causing waste to the increasingly scarce fresh water resources; it also brings certain difficulties to measurement and management

Method used

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  • Micro-flow metering aid valve used in water meter

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0011] 1. In order to make the device work reliably in various environments with high and low water pressure. Get diaphragm [7] effective stress area to be 17 times of valve port [16] area. To adapt to a certain range of water pressure. The reference diameter is 75-80mm, and additional specification devices are added for the excess part.

[0012] 2. Taking the 15mm caliber domestic water meter as an example, the reference diameter of the valve port [16] located between the inlet and outlet chambers is 18mm

[0013] 3. The elastic force of the spring [2] is greater than the valve port [16] area * maximum water supply pressure. The reference value is greater than 160 cattle. And has good anti-fatigue properties.

[0014] 4. When the area of ​​the diaphragm [7] meets the minimum water supply pressure, it is necessary to provide the pressure of the reliable compression spring for reference calculation. The diaphragm needs to be made of rubber sheet with good elasticity and ag...

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Abstract

The invention relates to an assistant valve for matching the rotor or screw water meter to measure the small drop that can not be measure by traditional method, wherein it drops the small flux into the outlet chamber to be accumulated to form high pressure difference with the inlet chamber; the pressure of outlet chamber is decreased, the elastic force of spring will push the membrane and valve rod, to open the flaps at the valve opening between two chambers; and the tap water of inlet chamber will enter into the outlet chamber with the flux larger then the minimum meter value, to increase the internal pressure and push membrane to compress the spring, to drive the valve rod and valve flap to close the valve opening; if going on dropping, repeating the process.

Description

technical field [0001] The invention is an auxiliary valve device for small flow measurement in cooperation with screw-wing and rotary-wing water meters. Background technique [0002] Rotary-wing and screw-wing water meters have been commonly used for a long time. It has many advantages such as strong water quality adaptability, long life, and low price. But its outstanding shortcoming is that the initial sensitivity is low. In the case of small flow dripping (15mm caliber water meter as an example, the minimum measurement value is 0.06m 3 / h or more) water meters cannot measure, and the larger diameter water meters are more serious; because these water meters rely on the flow of water to drive the metering and display mechanism, the existence of mechanical resistance in them makes it difficult to improve their sensitivity. A variety of high-sensitivity water meters have been designed. Such as: positive displacement, electromagnetic flowmeter, etc. But volumetric water m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K17/00
Inventor 郑国清
Owner 郑国清
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