Anti-freeze water meter
A water meter and water pressure technology, applied in the direction of preventing volumetric instrument damage, etc., can solve problems such as economic loss, water meter damage, water meter bursting, etc., and achieve the effect of ensuring measurement accuracy and preventing bursting
Inactive Publication Date: 2016-10-26
NINGBO WATER METER
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Problems solved by technology
[0002] Water meters have been widely used in people's lives, but in winter, due to the rapid drop in temperature and the specific gravity of ice is less than that of water, when the water in the water meter freezes, the ice cubes in the water meter will expand outwards. The damage caused by the water meter will cause the water meter to burst in severe cases, which will bring great inconvenience to people's lives and also bring unnecessary economic losses. water meter that won't burst
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[0014] The present invention will be described in further detail below in conjunction with specific embodiments: A kind of antifreeze water meter, comprises the water meter housing 1 that has cavity 1a and the water meter assembly that is arranged in described water meter housing 1, is characterized in that: described cavity 1a Connected with a cavity 2, the cavity 2 is arranged at the bottom of the water meter housing 1, and the cavity 2 has a closed space 3 whose volume can be compressed. In this embodiment, the closed space 3 is an air bag , the airbag is placed in the cavity 2 .
[0015] There is compressed gas in the airbag so that the air pressure in the airbag is greater than or equal to the water pressure in the water meter casing 1, so that the volume of the airbag will not change due to changes in water pressure after the airbag is installed in the water meter.
[0016] An airbag box 4 is arranged in the cavity 2, and the shape of the airbag box 4 matches the shape o...
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The invention discloses an anti-freeze water meter which includes a water meter housing having a cavity body and a water meter assembly which is arranged inside the water meter housing. The water meter is characterized in that the cavity body is in communication with a cavity which has an enclosed space therein. The enclosed space has a compressible volume. Compared with prior art, when the water meter is in usage, and when water inside the water meter freezes and expands outwardly, since icing is a slow process, an ice cube extrudes the enclosed space, the volume of the extruded enclosed space shrinks, which release sufficient space for the expanded ice cube, so that explosion of the housing of the water meter is avoided. In addition, according to the invention, the enclosed space does not change the shape and size of the original cavity body of the water meter, and the water meter does not need to re-measure or correct the features of water flow of the water meter, and the water meter can guarantee measuring precision of the water meter.
Description
technical field [0001] The invention relates to the field of water meters, in particular to a water meter which can prevent the water meter from bursting when tap water in the water meter freezes. Background technique [0002] Water meters have been widely used in people's lives, but in winter, due to the rapid drop in temperature and the specific gravity of ice is less than that of water, when the water in the water meter freezes, the ice cubes in the water meter will expand outward. The damage caused by the water meter will cause the water meter to burst in serious cases, which will bring great inconvenience to people's lives and also bring unnecessary economic losses. Therefore, it is necessary to develop a shell when the water in the water meter freezes. A water meter that will not burst. Contents of the invention [0003] The invention aims at the deficiencies in the prior art and provides an antifreeze water meter which can prevent the water meter from bursting when...
Claims
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IPC IPC(8): G01F15/10
CPCG01F15/10
Inventor 赵绍满郑家珍
Owner NINGBO WATER METER