Mechanical normal-pressure gas-water separator applied to water electrolysis hydrogen production system

Abstract

The utility model relates to the technical field of chemical industry, in particular to a mechanical normal-pressure gas-water separator applied to a water electrolysis hydrogen production system, which comprises a stainless steel tank body, the stainless steel tank body consists of a tank body, an upper end cover and a lower end cover, a gas outlet joint is fixedly mounted on the upper end cover, a one-way valve is fixedly mounted on the lower end cover, and the gas outlet joint is connected with the one-way valve. A mixed gas-liquid inlet connector is fixedly installed at the position, close to the upper end cover, of the high position of the side face of the tank body, and a metal floating ball is arranged in the middle of an inner cavity of the tank body. The mechanical floating ball drain valve used in the scheme not only can ensure the liquid level sealing of the gas-water separator, but also saves a liquid level sensor and a drain valve, does not need to make a control strategy, simplifies the control complexity of the whole system, and has very advantages in economy.

Description

Technical Field

[0001] The utility model belongs to the technical field of chemical engineering, and particularly relates to a mechanical atmospheric gas-water separator applied to an electrolytic water hydrogen production system. Background Technique

[0002] The hydrogen energy industry is developing vigorously, and electrolytic water hydrogen production is an indispensable field in the upstream of the hydrogen energy industry. Various technical routes of electrolytic water hydrogen production are booming in their respective tracks, and they all require an important component - a gas-water separator.

[0003] At present, whether it is a high-pressure or low-pressure hydrogen production system, the gas-water separation module usually consists of components such as a gas-water separator tank body, a liquid level control sensor, and a control valve to achieve automatic control of liquid discharge and ensure that the gas-liquid channel will not be penetrated; and the entire hydrogen production system usually contains multiple gas-water separation modules under different pressure conditions, and the liquid level control cost and complexity of the gas-water separator are relatively high. Therefore, simplifying the gas-water separation module is an important way to optimize and reduce costs in the hydrogen production system. Summary of the Utility Model

[0004] Aiming at the deficiencies of the existing technology, the purpose of the utility model is to provide a mechanical atmospheric gas-water separator applied to an electrolytic water hydrogen production system. The gas-water separator realizes the automatic drainage function after reaching a certain liquid level through a mechanical metal float structure, and there is always a liquid-phase water seal inside the gas-water separator to avoid the mutual penetration of gas and water mediums. The gas-water separator can integrate the functions of the separator tank body, the liquid level control sensor, and the control drain valve in the existing conventional gas-water separation scheme, simplify the system integration and control scheme, and reduce the BOP cost.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: A mechanical atmospheric gas-water separator applied to an electrolytic water hydrogen production system, including a stainless-steel tank body, the stainless-steel tank body is composed of a tank body, an upper end cover, and a lower end cover. A gas outlet joint is fixedly installed on the upper end cover, a check valve is fixedly installed on the lower end cover, a mixed gas-liquid inlet joint is fixedly installed on the side of the tank body at a high position and close to the upper end cover, a metal float is arranged in the middle of the inner cavity of the tank body, a connecting piece is sleeved at the opening of the check valve, a core body is movably connected inside the check valve, a connecting rod is fixedly installed at the top of the core body, and the top end of the connecting rod is fixedly connected to the bottom of the metal float.

[0006] Preferably, both the upper end cover and the lower end cover are detachably installed on the top and bottom of the tank body through bolts.

[0007] Preferably, the connecting rod is slidably connected inside the connecting piece, and the top end of the connecting rod sequentially penetrates the inner cavity of the check valve and the inner cavity of the connecting piece and extends to the top of the connecting piece to be fixedly connected to the metal float.

[0008] Preferably, an opening is provided on the valve body of the top end of the one-way valve that penetrates and extends into the inner cavity of the tank body, and a drain hole is provided at the bottom end of the one-way valve.

[0009] Compared with the prior art, the beneficial effects of the present utility model are as follows: Most of the gas-liquid separation systems in the existing electrolytic water hydrogen production systems are composed of a water separator tank body, a liquid level control sensor, and a control drain valve, and a high and low liquid level control strategy needs to be made. However, the mechanical float drain valve used in this solution can not only ensure the liquid level seal of the gas-water separator, but also save the liquid level sensor and the drain valve. At the same time, no control strategy is required, which simplifies the control complexity of the entire system and has great advantages in terms of economy. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the internal structure of the gas-water separator tank body of the present utility model;

[0011] Figure 2 It is a schematic diagram of the external structure of the gas-water separator of the present utility model;

[0012] Figure 3 It is a schematic diagram of the external structure of the gas-water separator of the present utility model;

[0013] Figure 4 It is a schematic diagram of the connection structure between the metal float ball and the one-way valve of the present utility model.

[0014] In the figure: 1, tank body; 2, upper end cover; 3, lower end cover; 4, one-way valve; 5, gas outlet joint; 6, mixed gas-liquid inlet joint; 7, metal float ball; 8, connecting piece; 9, core body; 10, connecting rod; 11, opening; 12, drain hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the following further details the present utility model through embodiments and in conjunction with the drawings. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0016] The following refers to Figures 1 - 4 to describe a mechanical atmospheric pressure gas-water separator applied to an electrolytic water hydrogen production system provided by an embodiment of the present application.

[0017] A mechanical atmospheric gas-water separator applied to an electrolytic water hydrogen production system, comprising a stainless steel tank body, which is composed of a tank body 1, an upper end cover 2 and a lower end cover 3. A gas outlet joint 5 is fixedly installed on the upper end cover 2, a check valve 4 is fixedly installed on the lower end cover 3, a mixed gas-liquid inlet joint 6 is fixedly installed at a high position on the side of the tank body 1 and close to the upper end cover 2, a metal floating ball 7 is arranged in the middle of the inner cavity of the tank body 1, a connecting piece 8 is sleeved at the opening of the check valve 4, a core body 9 is movably connected inside the check valve 4, a connecting rod 10 is fixedly installed at the top of the core body 9, and the top end of the connecting rod 10 is fixedly connected to the bottom of the metal floating ball 7.

[0018] Further, both the upper end cover 2 and the lower end cover 3 are detachably installed on the top and bottom of the tank body 1 through bolts, which is convenient for maintenance, disassembly and assembly.

[0019] Further, the connecting rod 10 is slidably connected to the inside of the connecting piece 8, and the top end of the connecting rod 10 sequentially passes through the inner cavity of the check valve 4 and the inner cavity of the connecting piece 8 and extends to the top of the connecting piece 8 to be fixedly connected to the metal floating ball 7.

[0020] In a further embodiment, an opening 11 is provided on the valve body of the top end of the check valve 4 that penetrates and extends into the inner cavity of the tank body 1, and a drain hole 12 is provided at the bottom end of the check valve 4.

[0021] Combined with the above embodiments, the working principle and specific working process of a mechanical atmospheric gas-water separator applied to an electrolytic water hydrogen production system of the present application are described: The gas on the hydrogen side / oxygen side of the electrolytic water hydrogen production system usually contains liquid water after electrolysis. The mixed medium enters the separator through the mixed gas-liquid inlet joint 6. Under the action of gravity, the liquid water will gather at the bottom of the separator, and the gas will be discharged outwards through the top gas outlet joint 5. When the liquid level is low, the buoyancy of the water is lower than the gravity of the metal floating ball 7, and the gravity of the metal floating ball 7 and the connecting rod 10 will press the core body 9 inside the check valve 4 to ensure sealing, and the separator does not drain water; when the liquid level gradually rises and the buoyancy reaches the gravity of the metal floating ball 7, the metal floating ball 7 floats up and drives the core body 9 inside the check valve 4 to lift, and the sealing of the check valve 4 fails. The water inside the gas-water separator passes through the opening 11 on the check valve 4 and is discharged outwards through the drain hole 12.

[0022] Specifically, when implementing, if the buoyancy of the floating ball is set as F, the gravity of the floating ball is set as G, and the drainage volume of the floating ball is set as V;

[0023] It can be known that when the liquid level of the gas-water separator reaches or exceeds a certain level, the buoyancy is equal to the gravity of the floating ball, and the floating ball lifts, so that the gas-water separator starts to drain water. After draining water for a period of time, the buoyancy is less than the gravity of the floating ball, and the floating ball falls, and the gas-water separator stops draining water. The liquid level height when the entire gas-water separator starts to drain water is related to the gravity of the floating ball, and floating balls with different gravities can be selected according to the drainage requirements, with strong applicability.

[0024] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0025] The above-described embodiments only represent several implementation manners of the present utility model. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the patent of the present utility model should be subject to the appended claims.

Claims

1. A mechanical atmospheric gas-water separator applied to an electrolyzed water hydrogen production system, comprising a stainless steel tank body, characterized in that: The stainless steel tank body is composed of a tank body (1), an upper end cover (2) and a lower end cover (3). A gas outlet joint (5) is fixedly installed on the upper end cover (2), a check valve (4) is fixedly installed on the lower end cover (3), a mixed gas-liquid inlet joint (6) is fixedly installed at a high position on the side of the tank body (1) and close to the upper end cover (2), a metal floating ball (7) is arranged in the middle of the inner cavity of the tank body (1), a connecting piece (8) is sleeved at the opening of the check valve (4), a core body (9) is movably connected inside the check valve (4), a connecting rod (10) is fixedly installed at the top of the core body (9), and the top end of the connecting rod (10) is fixedly connected to the bottom of the metal floating ball (7).

2. The mechanical atmospheric gas-water separator applied to the electrolytic water hydrogen production system according to claim 1, wherein: Both the upper end cover (2) and the lower end cover (3) are detachably installed on the top and bottom of the tank body (1) by bolts.

3. The mechanical atmospheric gas-water separator applied to the electrolytic water hydrogen production system according to claim 1, wherein: The connecting rod (10) is slidably connected inside the connecting piece (8). The top end of the connecting rod (10) sequentially penetrates through the inner cavity of the check valve (4) and the inner cavity of the connecting piece (8) and extends to the top of the connecting piece (8) to be fixedly connected to the metal floating ball (7).

4. The mechanical atmospheric gas-water separator applied to the electrolytic water hydrogen production system according to claim 1, wherein: An opening (11) is arranged on the valve body of the top end of the check valve (4) that penetrates and extends into the inner cavity of the tank body (1), and a drain hole (12) is opened at the bottom end of the check valve (4).

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