一种PEM电解槽的防冻排水阀

Abstract

本实用新型属于氢能制备与能源存储技术领域，具体涉及一种PEM电解槽的防冻排水阀，包括：用于与PEM电解槽排水口相连通的阀体，阀体上设有用于排出所述PEM电解槽内液态水的通道，以及温变排水阀组，所述温变排水阀组设置在所述通道内，其可通过温度变化而自动转变自身体相以阻、通所述通道。本实用新型通过利用形状记忆合金的（低温相）变特性，使其通过自身的体相转变，来实现排水通道的阻断或连通，成本低，且无需电力或人工干预。

Claims

1. An antifreeze drain valve for a PEM electrolytic cell, characterized in that, include: A valve body (1) for connecting to the drain outlet of the PEM electrolyzer is provided with a channel for draining liquid water in the PEM electrolyzer, and a temperature-changing drain valve group (4) is provided in the channel. It can automatically change its body phase to block or open the channel by temperature change. The channel includes a cavity formed inside the valve body (1), and an upper through hole (2) and a lower through hole (3) formed on the upper and lower end faces of the valve body (1) and communicating with the cavity. The temperature-sensitive drain valve assembly (4) includes a temperature-sensitive elastic element (41) with its starting end connected to the upper through hole (2), and a valve core (42) connected to the end of the temperature-sensitive elastic element (41) for blocking or opening the lower through hole (3); a limiting groove (5) is provided on the periphery of the valve core (42), and the limiting groove (5) extends out of the lower through hole (3) when the valve core (42) blocks the lower through hole (3); The bottom of the valve body (1) is provided with a limiting member (6). The limiting member (6) has a movable end. When the limiting groove (5) extends out of the lower through hole (3), the movable end of the limiting member (6) can be controlled to extend into the limiting groove (5) to restrict the movement of the valve core (42).

2. The freeze protection drain valve for a PEM electrolyzer of claim 1, wherein: The thermo-elastic element (41) is made of shape memory alloy.

3. The antifreeze drain valve for the PEM electrolytic cell according to claim 2, characterized in that: The phase transition temperature of the thermochromic elastic element (41) is 1℃-5℃.

4. The freeze protection drain valve for a PEM electrolyzer of claim 2, wherein: The thermo-elastic element (41) is a two-way SMA spring.

5. The freeze protection drain valve for a PEM electrolyzer of claim 1, wherein: The inner wall of the channel is coated with a hydrophobic coating.

6. The freeze protection drain valve for a PEM electrolyzer of claim 1, wherein: The bottom wall of the cavity is an inclined surface (11) that connects to the lower through hole (3) at its lowest end.

Images