CN-224216666-U - Online detection device for gas purity of electrolytic hydrogen production equipment

CN224216666UCN 224216666 UCN224216666 UCN 224216666UCN-224216666-U

Abstract

The utility model discloses a gas purity online detection device of electrolytic hydrogen production equipment, which comprises a gas-liquid sampling tube, a gas-liquid separator, a gas sampling tube, a gas analyzer and a liquid return tube, wherein the gas-liquid separator comprises a tank body and a cooling sleeve, an interlayer cooling cavity is formed between the cooling sleeve and the tank body, one end of the gas-liquid sampling tube is communicated with an electrolytic tank, the other end of the gas-liquid sampling tube is communicated with the tank body, one end of the gas sampling tube is communicated with the top of the tank body, the other end of the gas sampling tube is communicated with the gas analyzer, one end of the liquid return tube is communicated with the tank body, and the other end of the liquid return tube is communicated with the electrolytic tank. The utility model can continuously monitor the gas purity of a single electrolytic tank in real time, improves the accuracy of gas purity detection data, avoids the problems that the detection period is long and the gas purity change cannot be reflected in time in the traditional detection mode, and greatly improves the controllability and the stability of the electrolytic hydrogen production equipment during production.

Inventors

LV GUOAI
CHEN YOUXIAO
LIU XIAOHAN
WU XINGBING
YAN MI

Assignees

中集集电(广东)科技发展有限公司
中集海洋工程有限公司

Dates

Publication Date: 20260508
Application Date: 20250410

Claims (10)

1. The utility model provides an online detection device of gas purity of electrolysis hydrogen plant, its characterized in that includes gas-liquid sampling tube, gas-liquid separator, gas sampling tube, gas analyzer and liquid back flow, gas-liquid separator includes jar body and cooling jacket, the cooling jacket with form the intermediate layer cooling chamber between the jar body, the intermediate layer cooling chamber is used for holding coolant liquid, the one end and the electrolysis trough intercommunication of gas-liquid sampling tube, the other end of gas-liquid sampling tube with jar body intercommunication, the one end of gas sampling tube with the top intercommunication of jar body, the other end of gas sampling tube with gas analyzer intercommunication, the one end of liquid back flow with jar body intercommunication, the other end and the electrolysis trough intercommunication of liquid back flow.
2. The online gas purity detection device for electrolytic hydrogen production equipment according to claim 1, wherein the cooling jacket is provided with a cooling water inlet and a cooling water outlet, the cooling water inlet is connected with a cooling water inlet pipe, and the cooling water outlet is connected with a water drain pipe.
3. An on-line detection apparatus for gas purity of an electrolytic hydrogen plant according to claim 2, wherein the cooling water inlet is provided below a side portion of the cooling jacket, and the cooling water outlet is provided above the side portion of the cooling jacket.
4. The online gas purity detection device of the electrolytic hydrogen production equipment according to claim 1, wherein a spiral buffer tube is connected between the gas-liquid sampling tube and the tank body, the spiral buffer tube is arranged in the interlayer cooling cavity, the top end of the spiral buffer tube penetrates through the bottom of the tank body, and the bottom end of the spiral buffer tube penetrates through the bottom of the cooling sleeve and is connected with the gas-liquid sampling tube.
5. An on-line detection apparatus for gas purity of an electrolytic hydrogen production plant according to claim 4, wherein a reversing elbow is further connected to the top end of the spiral buffer tube, and the reversing elbow is disposed in the tank.
6. An on-line detection apparatus for gas purity of an electrolytic hydrogen production plant according to claim 5, wherein the reversing elbow is arranged in an inverted J-shape.
7. The online gas purity detection device for electrolytic hydrogen production equipment according to claim 1, wherein a wire mesh demister is arranged in the tank body and is positioned at the top of the inner cavity of the tank body.
8. The online gas purity detection device for electrolytic hydrogen production equipment according to claim 1, wherein one side of the tank body is communicated with a pure water supplementing pipe.
9. An apparatus for on-line detection of gas purity of an electrolytic hydrogen plant according to claim 1, wherein said liquid return conduit is connected to a side portion of said tank.
10. The online gas purity detection device for the electrolytic hydrogen production equipment according to claim 9, wherein a liquid level switch is further arranged on one side of the tank body, and the height of the liquid level switch is higher than that of the joint of the liquid return pipe and the tank body.

Description

Online detection device for gas purity of electrolytic hydrogen production equipment Technical Field The utility model relates to the technical field of detection equipment, in particular to a gas purity online detection device of electrolytic hydrogen production equipment. Background The hydrogen energy is widely applied to the fields of traffic, steelmaking, chemical industry, electric power, heat supply and the like, the hydrogen production is the root of various hydrogen energy application approaches, and the water electrolysis hydrogen production technology is the most important mode for constructing an electric hydrogen energy structure power-assisted new energy to realize large-scale conversion and utilization. Among them, the alkaline electrolysis technology is the most mature technology in the field of electrolytic water at present. The basic principle of hydrogen production is that under the action of current, water is decomposed into hydrogen and oxygen through electrochemical reaction, and then the hydrogen and the oxygen are separated out at the cathode and the anode of an electrolytic cell respectively. Because the hydrogen production requirement and scale of the electrolytic tank are continuously enlarged, the purity of the hydrogen and the oxygen generated by the electrolytic water is required to be timely detected. The existing gas purity detection device in the electrolytic water hydrogen production system is generally arranged in a hydrogen production frame, and particularly after oxygen-side gas-water separation and before product oxygen collection, the gas sampling flow of the existing gas purity detection device is longer, and the measured gas purity is delayed from the gas purity produced by an electrolytic tank and cannot quickly respond to the change and fluctuation of the electrolytic tank. In addition, in the large-scale water electrolysis hydrogen production project, in order to save investment cost, a set of post-treatment system is often used for a plurality of electrolytic tanks, at this time, the purity displayed by a set of gas purity analyzer in the hydrogen production frame is the gas purity after the plurality of electrolytic tanks share the separation frame and are mixed, and when the analysis instrument displays that the gas purity does not reach the standard, the gas purity of the electrolytic tank or electrolytic tanks cannot be judged. Disclosure of utility model In order to overcome the defects of the prior art, the utility model provides the online gas purity detection device for the electrolytic hydrogen production equipment, which can continuously monitor the gas purity of a single electrolytic tank in real time, improves the accuracy of gas purity detection data, avoids the problems that the detection period of the traditional detection mode is long and the gas purity change cannot be reflected in time, and greatly improves the controllability and the stability of the electrolytic hydrogen production equipment during production. The technical scheme adopted for solving the technical problems is as follows: The utility model provides a gaseous purity on-line measuring device of electrolysis hydrogen plant, includes gas-liquid sampling tube, gas-liquid separator, gas sampling tube, gas analyzer and liquid back flow, gas-liquid separator includes a jar body and cooling jacket, the cooling jacket with form the intermediate layer cooling chamber between the jar body, the intermediate layer cooling chamber is used for holding coolant liquid, the one end and the electrolysis trough intercommunication of gas-liquid sampling tube, the other end of gas-liquid sampling tube with jar body intercommunication, the one end of gas sampling tube with the top intercommunication of jar body, the other end of gas sampling tube with gas analyzer intercommunication, the one end of liquid back flow with jar body intercommunication, the other end and the electrolysis trough intercommunication of liquid back flow. As a further improvement of the technical scheme, the cooling sleeve is provided with a cooling water inlet and a cooling water outlet, the cooling water inlet is connected with a cooling water inlet pipe, and the cooling water outlet is connected with a water drain pipe. As a further improvement of the above technical solution, the cooling water inlet is provided below the side portion of the cooling jacket, and the cooling water outlet is provided above the side portion of the cooling jacket. As a further improvement of the technical scheme, a spiral buffer tube is connected between the gas-liquid sampling tube and the tank body, the spiral buffer tube is arranged in the interlayer cooling cavity, the top end of the spiral buffer tube penetrates through the bottom of the tank body, and the bottom end of the spiral buffer tube penetrates through the bottom of the cooling sleeve and is connected with the gas-liquid sampling tube. As a further improvement of the technical schem