Self-heat-setting type anti-freezing and anti-spalling valve

Abstract

The invention discloses a self-heat-setting type anti-freezing and anti-spalling valve, and belongs to the field of valves. According to the self-heat-setting type anti-freezing and anti-spalling valve, a self-heat-setting sleeve is arranged, and after a self-breaking water bag is broken under the action of low temperature in winter, water in the self-breaking water bag is in contact with heat-setting particles through a water guide ball rod. On the one hand, firstly quick lime particles react with the water, so that heat is generated and uniformly gathered on the inner wall of the self-heat-setting sleeve through the action of a soaking net to heat the surface of the valve, then condensation of water passing through the interior of the valve due to low temperature is effectively avoided, meanwhile, the occurrence rate of spalling caused by cold and hot temperature difference is remarkably reduced, and the service life of the valve is effectively prolonged; and on the other hand, after the quick lime is reacted, cement powder in the quick lime leaks out and is hardened after being in contact with the water, so that the overall strength of the self-heat-setting sleeve is effectively improved, the protection effect of the self-heat-setting sleeve on the internal valve body is higher, the force generated on the valve during partial thermal expansion can be counteracted, and the probability that the self-heat-setting sleeve is cracked by expansion is further reduced.

Description

technical field [0001] The invention relates to the field of valves, in particular to a self-condensing heat-resistant anti-freezing and anti-expansion valve. Background technique [0002] Valves are pipeline accessories used to open and close pipelines, control flow direction, adjust and control the parameters (temperature, pressure and flow) of the conveying medium. According to its function, it can be divided into shut-off valve, check valve, regulating valve and so on. [0003] The valve is a control component in the fluid delivery system, which has functions such as cut-off, adjustment, flow diversion, reverse flow prevention, pressure stabilization, flow diversion or overflow pressure relief. Valves used in fluid control systems range from the simplest cut-off valves to various valves used in extremely complex automatic control systems, with a wide variety of varieties and specifications. [0004] Valves can be used to control the flow of various types of fluids such...

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Problems solved by technology

[0005] In the low temperature environment in winter, due to the large temperature difference between day and night, the water in the valve pipe will be frozen and condensed at night, and will melt when the temperature rises at noon, and this process will be repeated many times, under the effect of continuous thermal expansion and cold contraction If the temperature is low, it is very easy to cause damage to the valve, especially the valve that can control hot and cold water at the same time. After thawing, when the hot water is released, it will cause a huge temperature difference and accelerate the damage of the valve. In severe cases, it may even cause the valve to directly expand. crack

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