Frost crack-prevention water meter structure

Abstract

The invention discloses a frost crack-prevention water meter structure. The frost crack-prevention water meter structure comprises a water meter shell, a water volume metering device and a frost crack-prevention issue, wherein the water meter shell and the water volume metering device can form a complete conventional water meter having no frost crack resistance. The frost crack-prevention water meter structure is characterized in that the frost crack-prevention issue is provided with at least three layers of flexible deformation materials capable of compensating the influence of volume expansion caused by water freezing, wherein the flexible deformation materials include a main flexible deformation layer material, flexible glue or membrane or coating and a smooth outer layer laminating membrane or rubber sheet or coating layer, the flexible glue or the membrane or the coating is capable of changing the surface adsorption force of the water meter shell, and the smooth outer layer laminating membrane or the rubber sheet or the coating layer is capable of improving the liquidity of water flow; and the frost crack-prevention issue is in tight connection with the water meter shell. According to the frost crack-prevention water meter structure, the water flow is smooth, and the resistance is small; by virtue of thermal insulation, the undercooling freezing speed is decreased, and the formation sequence and the structural mode of a frozen ice body are improved; the abnormal expansion caused by water freezing can be automatically compensated in real time, the fracture dissolving of ice can be accelerated, and the damage of the flexible deformation materials caused by the repeated extrusion of an ice body structure can be avoided; and the frost crack-prevention water meter structure is convenient to form and produce and low in cost and can be produced by virtue of a primary production line.

Description

technical field [0001] The invention relates to the field of water meters, in particular to an anti-freezing and cracking water meter structure. Background technique [0002] When the existing water meters are used in winter, they are sometimes damaged by freezing due to the cold weather. Especially in northern my country, the water meters installed and used outdoors often cause the glass cover of the water meter to freeze and crack, making the water meter unable to use normally. The main reason for the freezing damage of the above-mentioned water meter is that after the water meter is frozen at a cold temperature, when the water in the meter changes from a liquid state to a solid state, its volume will increase and a certain expansion force will be generated, so that the weakest point of the water meter— —The glass cover of the water meter is broken, and even other components inside the meter are damaged, thereby affecting the normal operation of the water meter. How to pr...

AI Technical Summary

Problems solved by technology

[0002] When the existing water meters are used in winter, the situation of freezing due to the cold weather occurs from time to time, especially in the north of my country, the water meters installed and used outdoors often cause the glass cover of the water meter to freeze and crack, making the water meter unable to use normally

The main reason for the freezing damage of the above-mentioned water meter is that after the water meter is frozen at a cold temperature, when the water in the meter changes from a liquid state to a solid state, its volume will increase and a certain expansion force will be generated, so that the weakest point of the water meter— —The glass cover of the water meter is broken, and even damages other components inside the meter, thereby affecting the normal operation of the water meter

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