Constant pressure valve and constant pressure device

Abstract

The invention discloses a constant pressure valve. The constant pressure valve comprises a pipe body, a spring, a piston and a positioning piece, wherein the spring, the piston and the positioning piece are all arranged in the pipe body; a limiting base with a pressure relief opening is arranged on the inner wall of the pipe body; the spring is clamped between the positioning piece and the piston; the piston is switched between a sealing position and a pressure relief position; when the piston is located at the sealing position, the piston abuts against the limiting base and blocks the pressure relief opening of the limiting base; and when the piston is located at the pressure relief position, the piston opens the pressure relief opening of the limiting base. The invention further relates to a constant pressure device. The constant pressure device comprises the constant pressure valve and a pressure bearing bin with a cavity. The constant pressure valve and the constant pressure device can provide a constant-pressure environment, realize continuous preparation of hydrogen-rich water with super-saturated concentration, can greatly reduce the cost of hydrogen-rich water preparation, and belongs to the technical field of hydrogen-rich water preparation devices.

Description

technical field [0001] The invention relates to the technical field of hydrogen-rich water preparation devices, in particular to a constant pressure valve and a constant pressure device. Background technique [0002] At present, there are mainly the following methods for mixing hydrogen and water: 1. Pressureless mixing: After filling the open container with water, hydrogen is supplied into the water through a hydrogen production device, and then it is naturally dissolved in water under normal pressure for mixing. 2. Pressurized mixing method: After filling the airtight container with water, the hydrogen is supplied into the water through the hydrogen production device, and then dissolved into the water under a certain pressure for mixing. 3. Venturi tube and jet mixing method: while supplying water to the Venturi tube, hydrogen is supplied by bypass to dissolve hydrogen. 4. Combining the hollow fiber membrane hydrogen dissolution method: supply water and hydrogen to the ho...

AI Technical Summary

Problems solved by technology

The above-mentioned preparation method technology has the following disadvantages: 1. Since the saturated hydrogen dissolved in water under normal pressure is 1.6ppm, the supersaturated effect cannot be achieved

2. The pressurized mixing method can produce a supersaturation effect after pressurized, but it will be accompanied by risks due to excessive pressure, and the requirements for the mixing container are high, and only a certain amount of water can be taken each time, and continuous water cannot be achieved.

3. Venturi tubes and jet flow methods are inefficient in hydrogen dissolution, and a large amount of gas is wasted in the process of hydrogen dissolution. To achieve the saturation effect, large-scale hydrogen production equipment is required to supply gas, and the cost is relatively high

4. The hydrogen dissolution method of the hollow fiber membrane cannot reach the hydrogen dissolution content of this technology, and the cost of the gas supply equipment is relatively high, and the hollow fiber membrane is a consumable and needs to be replaced regularly

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