Pressure buffer device of hydrogen purification equipment
By installing a hydrogen buffer between the hydrogen purification unit and the electrolytic gas-liquid processor, the problem of upstream pressure fluctuation of the self-regulating pressure regulating valve was solved, thus achieving stable operation of the hydrogen purification unit and reducing compressor energy consumption.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-22
- Publication Date
- 2026-03-27
AI Technical Summary
In existing hydrogen purification equipment, the small volume upstream of the self-regulating pressure regulating valve leads to increased pressure fluctuations, affecting the stable operation of the electrolyzer and increasing compressor energy consumption.
A hydrogen buffer is installed between the hydrogen purification unit and the electrolysis gas-liquid processor. Hydrogen is first introduced into the buffer through a gas guide pipe and a three-way valve and then delivered to the hydrogen purification unit to stabilize pressure fluctuations and increase the inlet pressure of the hydrogen compressor.
This resulted in more stable pressure in the hydrogen purification unit, stable operation of the electrolytic gas-liquid processor, and reduced energy consumption of the compressor.
Smart Images
Figure CN224050163U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to hydrogen purification technical field mainly relates to a kind of pressure buffer device of hydrogen purification equipment. BACKGROUND
[0002] The inlet pipeline of the existing hydrogen purification equipment is directly connected with the electrolytic gas-liquid processor.
[0003] However, since the hydrogen purification device uses a self-operated pressure regulating valve at the outlet to control the pressure in the hydrogen purification device, the performance characteristics of the self-operated pressure regulating valve determine its volatility in controlling pressure, and the volatility is related to the volume of the upstream and downstream. The direct connection between the electrolytic gas-liquid processor and the hydrogen purification equipment makes the volume of the upstream of the self-operated pressure regulating valve too small, resulting in an increase in the pressure fluctuation of the upstream of the self-operated pressure regulating valve. In order to ensure the stable operation of the electrolytic gas-liquid processor, the pressure at the downstream (the inlet of the compressor) of the self-operated pressure regulating valve needs to be controlled to be relatively low, which increases the technical problem of energy consumption of the compressor. SUMMARY
[0004] The utility model provides a kind of pressure buffer device of hydrogen purification equipment, to solve the technical problem raised in the background art.
[0005] To solve the above problems, the utility model adopts the technical scheme for solving the above technical problems: a kind of pressure buffer device of hydrogen purification equipment, including electrolytic gas-liquid processor, hydrogen purification device and hydrogen pressure section, electrolytic liquid processor side detachable connection guide pipe, the guide pipe is equipped with pneumatic regulating valve, and the guide pipe one end is equipped with three-way valve, the three-way valve is connected with hydrogen buffer through branch pipe, the other side of the hydrogen buffer is equipped with second guide pipe, the second guide pipe is detachable connection hydrogen purification device, the third guide pipe is detachable connection in the hydrogen purification device, the third guide pipe is equipped with self-operated pressure regulating valve, and the third guide pipe one end is equipped with second three-way valve, the second three-way valve is detachable connection fourth guide pipe, the fourth guide pipe is detachable connection hydrogen pressure section.
[0006] Preferably, the three-way valve and the second three-way valve are connected to the vent pipe, and the vent pipe is provided with a manual ball valve.
[0007] Preferably, the hydrogen buffer is a hydrogen buffer tank, the branch pipe is connected below the side of the hydrogen buffer, and the second guide pipe is connected above the other side of the hydrogen buffer.
[0008] Preferably, the branch pipe and the fourth guide pipe are hydrogen outlet pipes, and each is provided with a second manual ball valve.
[0009] Compared with the prior art, the utility model has the beneficial effects that:
[0010] The utility model discloses a hydrogen buffer is arranged between hydrogen purification device and electrolytic gas liquid treater, and the hydrogen of electrolytic gas liquid treater is first entered into the hydrogen buffer, and then is transported to the hydrogen purification device, which makes the pressure between electrolytic gas liquid treater export and hydrogen purification device self -operated pressure regulating valve more stable. BRIEF DESCRIPTION OF DRAWINGS
[0011] Figure 1 It is the structural schematic diagram of the utility model.
[0012] In the drawing: 1, electrolytic gas liquid treater, 2, hydrogen purification device, 21, third gas pipe, 22, self -operated pressure regulating valve, 23, second three -way valve, 24, fourth gas pipe, 3, hydrogen pressure section, 4, gas pipe, 41, pneumatic regulating valve, 42, three -way valve, 5, branch pipe, 6, hydrogen buffer, 7, second gas pipe, 8, vent pipe, 81, manual ball valve, 9, second manual ball valve. DETAILED DESCRIPTION
[0013] In order to facilitate understanding the utility model, below will be described more comprehensively to the utility model with reference to relevant drawings, the drawings give several embodiments of the utility model, but the utility model can be realized by different forms, and is not limited to the embodiment described in the text, on the contrary, provide these embodiments are for making the content disclosed by the utility model more thorough and comprehensive.
[0014] It should be noted that when an element is referred to as "fixed to" another element, it can be directly on another element or there can be a middle element, and when an element is referred to as "connected to" another element, it can be directly connected to another element or there can be a middle element, the terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.
[0015] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the utility model belongs, the terms used in the specification of the utility model are for the purpose of describing specific embodiments, and are not intended to limit the utility model, the term "and / or" used herein includes any and all combinations of one or more related listed items.
[0016] Please refer to the attached 1, a pressure buffer device of a hydrogen purification device, comprising an electrolytic gas-liquid processor 1, a hydrogen purification device 2 and a hydrogen pressure section 3, one side of the electrolytic gas-liquid processor 1 is detachably connected with a gas guide pipe 4, the gas guide pipe 4 is provided with a pneumatic regulating valve 41, and one end of the gas guide pipe 4 is provided with a three-way valve 42, the three-way valve 42 is connected with a hydrogen buffer 6 through a branch pipe 5, the other side of the hydrogen buffer 6 is provided with a second gas guide pipe 7, the second gas guide pipe 7 is detachably connected with the hydrogen purification device 2, the hydrogen purification device 2 is detachably connected with a third gas guide pipe 21, the third gas guide pipe 21 is provided with a self-operated pressure regulating valve 22, and one end of the third gas guide pipe 21 is provided with a second three-way valve 23, the second three-way valve 23 is detachably connected with a fourth gas guide pipe 24, and the fourth gas guide pipe 24 is detachably connected with the hydrogen pressure section 3.
[0017] The three-way valve 42 and the second three-way valve 23 are both connected with a vent pipe 8, and the vent pipe 8 is provided with a manual ball valve 81; the hydrogen buffer 6 is a hydrogen buffer tank. In the initial period of starting the electrolytic tank, the hydrogen purity is unqualified, this vent pipe 8 is used for venting the unqualified hydrogen, and when the downstream hydrogen purification device 2 does not have the gas inlet condition or has a fault and needs to temporarily stop the hydrogen inlet, the vent pipe is also used for short-term venting.
[0018] The branch pipe 5 is connected below the side of the hydrogen buffer 6, and the second gas guide pipe 7 is connected above the other side of the hydrogen buffer 6.
[0019] The branch pipe 5 and the fourth gas guide pipe 24 are both hydrogen outlet pipes, and are both provided with a second manual ball valve 9.
[0020] The operation principle is as follows: the electrolytic gas-liquid processor 1 generates hydrogen by electrolysis, the unqualified hydrogen in the gas guide pipe 4 is discharged through the vent pipe, then the hydrogen generated by the electrolytic gas-liquid processor 1 is transported to the three-way valve 42 through the gas guide pipe 4, is transported to the branch pipe 5 through the three-way valve 42, and is transported to the hydrogen buffer 6 through the branch pipe 5.
[0021] Since the branch pipe 5 is connected below the hydrogen buffer 6 and the second gas guide pipe 7 is located above the side of the hydrogen buffer 6, the hydrogen moves upward after entering due to the low relative molecular mass, so that the front end gas pressure of the hydrogen purification device 2 is more stable; at the same time, since the hydrogen buffer 6 is added, the pressure fluctuation of the electrolytic liquid processor 1 is smaller, and the operation is more stable.
[0022] The above describes the present application by way of example with reference to the drawings, and obviously the specific implementation of the present application is not limited to the above manner, as long as the method concept and technical solution of the present application are adopted for such non-essential improvement or the concept and technical solution of the present application are directly applied to other occasions without improvement, which are all within the protection scope of the present application.
Claims
1. A pressure buffer device of a hydrogen purification plant, comprising an electrolysis gas-liquid processor (1), a hydrogen purification device (2) and a hydrogen pressure work section (3), characterized in that: The electrolytic gas-liquid processor (1) is detachably connected with a gas guide pipe (4) on one side, the gas guide pipe (4) is provided with a pneumatic regulating valve (41), and the gas guide pipe (4) is provided with a three-way valve (42) at one end, the three-way valve (42) is connected with a hydrogen buffer (6) through a branch pipe (5), the hydrogen buffer (6) is provided with a second gas guide pipe (7) on the other side, the second gas guide pipe (7) is detachably connected with a hydrogen purification device (2), the hydrogen purification device (2) is detachably connected with a third gas guide pipe (21) inside, the third gas guide pipe (21) is provided with a self-operated pressure regulating valve (22), and the third gas guide pipe (21) is provided with a second three-way valve (23) at one end, the second three-way valve (23) is detachably connected with a fourth gas guide pipe (24), and the fourth gas guide pipe (24) is detachably connected with a hydrogen pressure section (3).
2. A pressure surge device for a hydrogen purification plant according to claim 1, characterized in that: The three-way valve (42) and the second three-way valve (23) are connected with a vent pipe (8), and the vent pipe (8) is provided with a manual ball valve (81).
3. A pressure surge device for a hydrogen purification apparatus according to claim 1, characterized by: The hydrogen buffer (6) is a hydrogen buffer tank.
4. A pressure surge device for a hydrogen purification plant according to claim 3, characterized in that: The branch pipe (5) is connected below the hydrogen buffer (6) on one side, and the second gas guide pipe (7) is connected above the hydrogen buffer (6) on the other side.
5. A pressure surge device for a hydrogen purification apparatus according to claim 3, characterized by: The branch pipe (5) and the fourth gas guide pipe (24) are hydrogen outlet pipes, and are both provided with a second manual ball valve (9).