Gas-liquid separator and hydrogen production equipment

Abstract

The utility model provides a gas-liquid separator and hydrogen production equipment. The gas-liquid separator comprises a shell assembly and a guide pipe, a containing cavity is formed in the shell assembly, a gas inlet and a gas outlet are formed in the side wall of the shell assembly and communicate with the containing cavity, at least part of the guide pipe is located in the containing cavity, and the guide pipe communicates with the gas inlet and the containing cavity. The part, located in the containing cavity, of the guide pipe inclines in the direction away from the air outlet. According to the gas-liquid separator, the gas inlet of the shell assembly is connected with the guide pipe, and the guide pipe inclines towards the direction away from the gas outlet, namely, the guide pipe inclines towards the bottom of the gas-liquid separator, so that a mixture of high-pressure and high-speed hydrogen and liquid water can be buffered to a certain extent in the guide pipe when entering the gas-liquid separator through the gas inlet; and the gas obliquely flows into the bottom of the gas-liquid separator along the guide pipe, so that the impact on the liquid level in the accommodating cavity is relieved, and the use safety and reliability of the gas-liquid separator are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hydrogen production, in particular to a gas-liquid separator and a hydrogen production device. BACKGROUND

[0002] Water electrolysis hydrogen production is a clean and efficient hydrogen production method, and a mixture of high-pressure hydrogen and liquid water is generated in the process. In order to ensure the purity of hydrogen and the safety of subsequent use, a gas-liquid separator is needed to effectively separate these mixtures, and the working state inside the separator needs to be monitored in real time. However, when gas-liquid separation is performed, the high-pressure and high-speed mixture of hydrogen and liquid water may cause serious splashing of liquid droplets when passing through the gas inlet into the gas-liquid separator due to high flow rate and pressure, which affects the detection of the liquid level in the gas-liquid separator, thereby affecting the safety and reliability of the gas-liquid separator. CONTENT OF THE UTILITY MODEL

[0003] Embodiments of the present application provide a gas-liquid separator and a hydrogen production device, which can improve the problem of poor safety and stability of the gas-liquid separator during use.

[0004] In a first aspect, embodiments of the present application provide a gas-liquid separator, comprising:

[0005] A housing assembly is formed with a receiving cavity, and a gas inlet and a gas outlet are arranged on the side wall of the housing assembly, and the gas inlet and the gas outlet are respectively communicated with the receiving cavity;

[0006] A guide pipe is at least partially located in the receiving cavity, and the guide pipe is communicated with the gas inlet and the receiving cavity, and the part of the guide pipe located in the receiving cavity is inclined away from the gas outlet.

[0007] In an embodiment, the gas-liquid separator comprises a first filter, which is located in the receiving cavity, and the first filter is connected with the guide pipe, and the first filter is formed with a filter channel, and the filter channel is communicated with the guide pipe and the receiving cavity.

[0008] In an embodiment, a plurality of through holes are arranged on the outer circumferential surface of the first filter, and the plurality of through holes form the filter channel.

[0009] In an embodiment, the guide pipe comprises an elbow pipe.

[0010] In an embodiment, a first interface is arranged on the side wall of the housing assembly, the first interface is communicated with the receiving cavity, and the first interface is used for connecting with a first liquid level sensor; and in the axial direction of the housing assembly, the intersection of the flow direction corresponding to the outlet of the guide pipe and the side wall of the housing assembly is located on the side of the first interface away from the gas outlet.

[0011] In an embodiment, a second interface is further formed on the side wall of the shell assembly, the second interface being in communication with the accommodating cavity, and the second interface being configured to be connected with a second liquid level sensor; and the second interface is located on a side of the first interface away from the gas outlet in the axial direction of the shell assembly.

[0012] In an embodiment, a line extending from the flow direction corresponding to the outlet of the guide pipe intersects the side wall of the shell assembly between the first interface and the second interface in the axial direction of the shell assembly.

[0013] In an embodiment, the shell assembly comprises a first shell, a second shell and a third shell arranged in sequence in the axial direction of the shell assembly, a liquid discharge port is arranged on the side wall of the first shell, the gas inlet is arranged on the side wall of the second shell, and the gas outlet is arranged on the side wall of the third shell.

[0014] In an embodiment, the shell assembly further comprises a first connecting member connected between the first shell and the second shell; wherein,

[0015] a first mounting groove is formed on a side of the first shell facing the first connecting member, and the first connecting member is embedded in the first mounting groove; and / or,

[0016] a second mounting groove is formed on a side of the second shell facing the first connecting member, and the first connecting member is embedded in the second mounting groove.

[0017] In an embodiment, the shell assembly further comprises a second connecting member connected between the second shell and the third shell; wherein,

[0018] a third mounting groove is formed on a side of the second shell facing the second connecting member, and the second connecting member is embedded in the third mounting groove; and / or,

[0019] a fourth mounting groove is formed on a side of the third shell facing the second connecting member, and the second connecting member is embedded in the fourth mounting groove.

[0020] In a second aspect, embodiments of the present application provide a hydrogen production device, comprising the gas-liquid separator described in any one of the above embodiments.

[0021] The embodiments of the present application have the following beneficial effects:

[0022] In embodiments of this application, the gas-liquid separator includes a housing assembly and a guide tube. The housing assembly forms a receiving cavity, and an inlet and an outlet are provided on the side wall of the housing assembly. The inlet and outlet are respectively connected to the receiving cavity. The guide tube is at least partially located within the receiving cavity, connecting the inlet and the receiving cavity. The portion of the guide tube within the receiving cavity is inclined away from the outlet. By connecting the guide tube to the inlet of the housing assembly and inclining the guide tube away from the outlet (i.e., inclined towards the bottom of the gas-liquid separator), this application allows the high-pressure, high-speed mixture of hydrogen and liquid water to be buffered within the guide tube when entering the gas-liquid separator through the inlet, and then flows inclinedly towards the bottom of the gas-liquid separator along the guide tube. This mitigates the impact on the liquid surface within the receiving cavity, thereby improving the safety and reliability of the gas-liquid separator. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a three-dimensional structural schematic diagram of a gas-liquid separator provided in an embodiment of this application;

[0025] Figure 2 This is a cross-sectional structural schematic diagram of a gas-liquid separator provided in an embodiment of this application;

[0026] Figure 3 This is provided by the embodiments of this application. Figure 2 Enlarged structural diagram of region A in the middle;

[0027] Figure 4 This is provided by the embodiments of this application. Figure 2 A magnified structural diagram of region B in the middle;

[0028] Figure 5 This is provided by the embodiments of this application. Figure 2 A magnified structural diagram of region C in the middle.

[0029] Explanation of reference numerals in the attached figures:

[0030] 10, gas-liquid separator; 11, housing assembly; 111, first housing; 1111, second interface; 1112, liquid outlet; 1113, first mounting groove; 112, second housing; 1121, gas inlet; 1122, first interface; 1123, second mounting groove; 1124, third mounting groove; 113, third housing; 1131, gas outlet; 1132, fourth mounting groove; 1133, third interface; 114, first connecting piece; 115, second connecting piece; 116, accommodating cavity; 12, guide pipe; 13, first filter piece; 131, filter channel; 132, through hole; 14, second filter piece; 15, third filter piece. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application. In addition, it should be understood that the specific embodiments described herein are only used to illustrate and explain the present application, and are not used to limit the present application. In the present application, the orientation words such as "upper" and "lower" generally refer to the upper and lower in the actual use or working state of the device, and specifically refer to the direction of the drawing surface in the drawings; and "inner" and "outer" refer to the contour of the device.

[0032] The present application provides a kind of gas-liquid separator 10, as shown in Figure 1 And Figure 2 As shown, the gas-liquid separator 10 includes a housing assembly 11, the housing assembly 11 is formed with an accommodating cavity 116, the sidewall of the housing assembly 11 is provided with a gas inlet 1121 and a gas outlet 1131, the gas inlet 1121 and the gas outlet 1131 are communicated with the accommodating cavity 116 respectively. In the process of electrolytic water hydrogen production, the mixture of high pressure and high speed hydrogen and liquid water enters the accommodating cavity 116 through the gas inlet 1121 on the housing assembly 11, after gas-liquid separation in the accommodating cavity 116, the liquid water is deposited in the bottom area of the accommodating cavity 116, and the hydrogen is output to the hydrogen end equipment through the gas outlet 1131.

[0033] The gas-liquid separator 10 comprises a guide pipe 12 which is at least partially located in the accommodating cavity 116, the guide pipe 12 is communicated between the gas inlet 1121 and the accommodating cavity 116, and the part of the guide pipe 12 located in the accommodating cavity 116 is inclined away from the gas outlet 1131. That is, the guide pipe 12 extends into the accommodating cavity 116 and is inclined toward the bottom of the gas-liquid separator 10. When the mixture of high-pressure and high-speed hydrogen and liquid water enters the gas-liquid separator 10 through the gas inlet 1121, a certain buffering can be performed in the guide pipe 12, and the mixture flows into the bottom of the gas-liquid separator 10 along the guide pipe 12, thereby relieving the impact on the liquid surface in the accommodating cavity 116 of the gas-liquid separator 10, and improving the safety and reliability of the gas-liquid separator 10.

[0034] In some embodiments, as shown in Figure 3 The gas-liquid separator 10 comprises a first filter 13 located in the accommodating cavity 116, the first filter 13 is connected with the guide pipe 12, and the first filter 13 forms a filter channel 131 communicated between the guide pipe 12 and the accommodating cavity 116. That is, the mixture of hydrogen and liquid water needs to pass through the first filter 13 before entering the accommodating cavity 116 through the guide pipe 12, and the filter channel 131 of the first filter 13 can perform a first filtering and separation on the liquid water, so as to reduce the content of liquid water in the mixture. At the same time, the arrangement of the first filter 13 can bring a certain resistance to the flow of the mixture, thereby playing a certain speed reduction effect, so that the speed of the mixture entering the accommodating cavity 116 is reduced, thereby helping to relieve the impact on the liquid surface in the accommodating cavity 116 of the gas-liquid separator 10.

[0035] The first filter 13 can be connected at the end of the guide pipe 12, or can be arranged inside the guide pipe 12, and the specific arrangement mode can be selected and adjusted according to actual design requirements, which is not specially limited here.

[0036] In some embodiments, a plurality of through holes 132 are formed in the outer circumferential surface of the first filter 13, and the plurality of through holes 132 form the filter channel 131 to communicate between the guide pipe 12 and the accommodating cavity 116. That is, the side surface and the end surface of the first filter 13 are provided with the through holes, and when the mixture of hydrogen and liquid water enters the accommodating cavity 116 through the guide pipe 12, the first filter 13 can reduce the flow rate of the mixture through atomization, so as to relieve the impact on the liquid surface in the accommodating cavity 116 of the gas-liquid separator 10.

[0037] In some embodiments, the guide pipe 12 comprises a bend pipe, that is, the guide pipe 12 can directly adopt a bend pipe structure, so that the guide pipe 12 can be bent to different angles according to actual needs, so as to facilitate the inclined design of the guide pipe 12. In addition, the use of the bend pipe structure also helps to simplify the connection mode of the guide pipe 12 with the shell assembly 11 and the first filter 13.

[0038] In some embodiments, a first interface 1122 is formed on the side wall of the shell assembly 11, the first interface 1122 is in communication with the accommodating cavity 116, and the first interface 1122 is used to connect with a first liquid level sensor, which is used to detect the height of the liquid water in the accommodating cavity 116 and timely discharge the liquid water.

[0039] In the axial direction of the shell assembly 11, the intersection of the extension line of the flow direction corresponding to the outlet of the guide pipe 12 and the side wall of the shell assembly 11 is located on the side away from the air outlet 1131 of the first interface 1122. That is, when the mixture flows into the accommodating cavity 116 of the shell assembly 11 along the guide pipe 12, if the mixture directly impacts the inner wall of the shell assembly 11, the impact point of the mixture impacting the inner wall of the shell assembly 11 is located below the first interface 1122, so as to avoid the mixture directly impacting the first liquid level sensor arranged at the first interface 1122, reduce the risk of detection distortion of the first liquid level sensor, and thus improve the detection accuracy and service life of the first liquid level sensor.

[0040] It should be noted that the flow direction corresponding to the outlet of the guide pipe 12 refers to the flow direction of the mixture flowing out of the guide pipe 12 when the mixture flows into the accommodating cavity 116 through the guide pipe 12.

[0041] In other embodiments, a second interface 1111 is also formed on the side wall of the shell assembly 11, the second interface 1111 is in communication with the accommodating cavity 116, and the second interface 1111 is used to connect with a second liquid level sensor, which is located on the side away from the air outlet 1131 of the first interface 1122 in the axial direction of the shell assembly 11. That is, the first liquid level sensor is a high liquid level sensor, and the second liquid level sensor is a low liquid level sensor. By arranging two liquid level sensors on the shell assembly 11, double detection of the height of the liquid water in the accommodating cavity 116 can be realized, so that when one of the liquid level sensors fails, the other liquid level sensor can continue to work, thereby reducing the risk of safety hazards of the gas-liquid separator 10 in use.

[0042] It should be noted that the shell assembly 11 is further provided with a liquid outlet 1112. The liquid outlet 1112 can be connected to an electromagnetic valve, a first liquid level sensor and a second liquid level sensor outside through a pipeline, and the first liquid level sensor and the second liquid level sensor are connected to a control system to output a control signal to the control system. When the second liquid level sensor (low liquid level sensor) detects that the height of the liquid water reaches the first interface 1122, the control system can control the electromagnetic valve to open, so as to drain or backflow the liquid water to the hydrogen production device for reuse, so as to avoid the accumulation of liquid water in the gas-liquid separator 10. When the second liquid level sensor fails, the first liquid level sensor can serve as a second guarantee. When the height of the liquid water reaches the second interface 1111, the second sensor can send an alarm signal to stop the inflow of the mixture, so as to ensure the safety and stability of the use of the gas-liquid separator 10.

[0043] In some embodiments, in the axial direction of the shell assembly 11, the intersection of the extension line of the flow direction corresponding to the outlet of the guide pipe 12 and the side wall of the shell assembly 11 is located between the first interface 1122 and the second interface 1111. That is, when the mixture flows into the containing cavity 116 of the shell assembly 11 along the guide pipe 12, if the mixture directly impacts the inner wall of the shell assembly 11, the impact point of the mixture impacting the inner wall of the shell assembly 11 is located between the first interface 1122 and the second interface 1111, so as to avoid the mixture directly impacting the first liquid level sensor and the second liquid level sensor arranged at the first interface 1122 and the second interface 1111, reduce the risk of detection distortion of the first liquid level sensor and the second liquid level sensor, and thus improve the detection accuracy and service life of the first liquid level sensor and the second liquid level sensor.

[0044] It should be noted that the angle between the flow direction corresponding to the outlet of the guide pipe 12 and the axial direction of the shell assembly 11 in the embodiment of the present application can be set to 45°, so that the high-pressure and high-speed hydrogen gas and the liquid water mixture can be effectively slowed down after passing through the guide pipe 12. If the angle between the flow direction corresponding to the outlet of the guide pipe 12 and the axial direction of the shell assembly 11 is too large or too small, the speed of the high-pressure and high-speed hydrogen gas and the liquid water mixture entering the containing cavity 116 of the shell assembly 11 through the guide pipe 12 will be too large, so that the liquid level sensor probe will be directly impacted by the splashing liquid droplets, the liquid level sensor will be distorted, and the safety and stability of the use of the gas-liquid separator 10 will be affected.

[0045] In some embodiments, the shell assembly 11 at least includes a first shell 111, a second shell 112 and a third shell 113 arranged in sequence along the axial direction of the shell assembly 11, the side wall of the first shell 111 is provided with a liquid outlet 1112, the side wall of the second shell 112 is provided with an air inlet 1121, and the side wall of the third shell 113 is provided with an air outlet 1131. That is, the mixture of hydrogen and liquid water enters the containing cavity 116 from the side wall of the second shell 112, after gas-liquid separation in the containing cavity 116, the liquid water is discharged from the side wall of the first shell 111, and the hydrogen is discharged from the side wall of the third shell 113. By arranging the air inlet 1121, the air outlet 1131 and the liquid outlet 1112 on different shell segments of the shell assembly 11 respectively, it is helpful to overhaul and maintain the gas-liquid separator 10, and when one of the shell segments has a problem, it is also convenient to replace the shell segment alone. In addition, arranging the shell assembly 11 into multiple segments also facilitates the assembly of each segment and the internal structure.

[0046] The side wall of the third shell 113 is further provided with a third interface 1133, which is located on the side of the air outlet 1131 facing the air inlet 1121 along the axial direction of the shell assembly 11, that is, the third interface 1133 is located below the air outlet 1131 along the axial direction of the shell assembly 11. The third interface 1133 is used to connect with a pressure sensor, and the pressure sensor is used to detect the gas pressure in the containing cavity 116. The pressure sensor is connected with a control system to timely discharge the gas in the containing cavity 116 according to the detection result, so as to avoid safety accidents such as explosion in the containing cavity 116 due to excessive pressure, thereby ensuring the use safety and stability of the gas-liquid separator 10.

[0047] It should be noted that the third interface 1133 and the air outlet 1131 on the third shell 113 and the second interface 1111 and the liquid outlet 1112 on the first shell 111 can be symmetrically arranged, that is, the structures of the third shell 113 and the first shell 111 can be designed to be the same, for example, the third shell 113 and the first shell 111 can be designed to be a barrel-shaped shape with an open end, so that the assembly of the shell assembly 11 is more flexible and convenient, which helps to improve the assembly efficiency of the shell assembly 11.

[0048] In some embodiments, as Figure 2 and Figure 4As shown, the shell assembly 11 further comprises a first connecting piece 114 connected between the first shell 111 and the second shell 112, and a first mounting groove 1113 is formed on the side of the first shell 111 facing the first connecting piece 114, and the first connecting piece 114 is embedded in the first mounting groove 1113. That is, the first shell 111 and the second shell 112 are connected through the first connecting piece 114, and by embedding one end of the first connecting piece 114 in the first mounting groove 1113 on the first shell 111, the first connecting piece 114 and the first shell 111 can be connected by socket welding, thereby helping to improve the welding strength of the first connecting piece 114 and the first shell 111; in addition, when the gas pressure in the accommodating cavity 116 is too large and the first connecting piece 114 is extruded, the sidewall of the first mounting groove 1113 can restrict the first connecting piece 114, reducing the risk of fracture between the first connecting piece 114 and the first shell 111 due to excessive gas pressure in the accommodating cavity 116, thereby ensuring the safety and stability of the use of the gas-liquid separator 10.

[0049] In some embodiments, as shown in Figure 2 and Figure 3 As shown, the shell assembly 11 further comprises a first connecting piece 114 connected between the first shell 111 and the second shell 112, and a first mounting groove 1113 is formed on the side of the first shell 111 facing the first connecting piece 114, and the first connecting piece 114 is embedded in the first mounting groove 1113. That is, the first shell 111 and the second shell 112 are connected through the first connecting piece 114, and by embedding one end of the first connecting piece 114 in the first mounting groove 1113 on the first shell 111, the first connecting piece 114 and the first shell 111 can be connected by socket welding, thereby helping to improve the welding strength of the first connecting piece 114 and the first shell 111; in addition, when the gas pressure in the accommodating cavity 116 is too large and the first connecting piece 114 is extruded, the sidewall of the first mounting groove 1113 can restrict the first connecting piece 114, reducing the risk of fracture between the first connecting piece 114 and the first shell 111 due to excessive gas pressure in the accommodating cavity 116, thereby ensuring the safety and stability of the use of the gas-liquid separator 10.

[0050] In some embodiments, the shell assembly 11 further comprises a first connecting piece 114 connected between the first shell 111 and the second shell 112, the first shell 111 is provided with a first mounting groove 1113 on the side facing the first connecting piece 114, and the first connecting piece 114 is embedded in the first mounting groove 1113, and meanwhile, the second shell 112 is provided with a second mounting groove 1123 on the side facing the first connecting piece 114, and the first connecting piece 114 is embedded in the second mounting groove 1123. That is, the two ends of the first connecting piece 114 can be connected with the first shell 111 and the second shell 112 respectively by socket welding, so as to improve the welding strength of the first connecting piece 114 with the first shell 111 and the second shell 112, further reduce the risk of fracture between the first connecting piece 114 and the first shell 111 and the second shell 112 due to excessive gas pressure in the accommodating cavity 116, and ensure the use safety and stability of the gas-liquid separator 10.

[0051] In the first connecting piece 114, a second filter 14 is arranged, which can be a filter screen structure. After the mixture of hydrogen and liquid water enters the accommodating cavity 116 through the guide pipe 12, the liquid water will be deposited downward under the action of gravity and then enter the first shell 111 after being filtered by the second filter 14, and then be discharged from the liquid discharge port 1112 on the first shell 111. The second filter 14 is used for filtering impurities in the liquid water, so that the liquid water discharged from the liquid discharge port 1112 can be recycled in the electrolytic water hydrogen production device.

[0052] It should be noted that the second filter 14 can also be arranged in the first shell 111, as long as it is arranged above the liquid discharge port 1112 to filter impurities in the liquid water so that the liquid water discharged from the liquid discharge port 1112 can be recycled in the electrolytic water hydrogen production device, which is not limited here.

[0053] In some embodiments, as shown in FIG. 6, Figure 2 and Figure 3As shown, the shell assembly 11 further comprises a second connecting piece 115 connected between the second shell 112 and the third shell 113, the second shell 112 is provided with a third mounting groove 1124 on the side facing the second connecting piece 115, and the second connecting piece 115 is embedded in the third mounting groove 1124. That is, the second shell 112 and the third shell 113 are connected through the second connecting piece 115, and by embedding one end of the second connecting piece 115 in the third mounting groove 1124 on the second shell 112, the second connecting piece 115 and the second shell 112 can be connected by socket welding, thereby helping to improve the welding strength of the second connecting piece 115 and the second shell 112; in addition, when the gas pressure in the accommodating cavity 116 is too large and the second connecting piece 115 is extruded, the sidewall of the third mounting groove 1124 can play a restraining role on the second connecting piece 115, reducing the risk of fracture between the second connecting piece 115 and the second shell 112 due to excessive gas pressure in the accommodating cavity 116, thereby ensuring the use safety and stability of the gas-liquid separator 10.

[0054] In some embodiments, as shown in Figure 2 and Figure 5 As shown, the shell assembly 11 further comprises a second connecting piece 115 connected between the second shell 112 and the third shell 113, the second shell 112 is provided with a third mounting groove 1124 on the side facing the second connecting piece 115, and the second connecting piece 115 is embedded in the third mounting groove 1124. That is, the second shell 112 and the third shell 113 are connected through the second connecting piece 115, and by embedding one end of the second connecting piece 115 in the third mounting groove 1124 on the second shell 112, the second connecting piece 115 and the second shell 112 can be connected by socket welding, thereby helping to improve the welding strength of the second connecting piece 115 and the second shell 112; in addition, when the gas pressure in the accommodating cavity 116 is too large and the second connecting piece 115 is extruded, the sidewall of the third mounting groove 1124 can play a restraining role on the second connecting piece 115, reducing the risk of fracture between the second connecting piece 115 and the second shell 112 due to excessive gas pressure in the accommodating cavity 116, thereby ensuring the use safety and stability of the gas-liquid separator 10.

[0055] In some embodiments, the shell assembly 11 further comprises a second connecting piece 115 connected between the second shell 112 and the third shell 113, the second shell 112 is provided with a third mounting groove 1124 on the side facing the second connecting piece 115, and the second connecting piece 115 is embedded in the third mounting groove 1124. Meanwhile, the third shell 113 is provided with a fourth mounting groove 1132 on the side facing the second connecting piece 115, and the second connecting piece 115 is embedded in the fourth mounting groove 1132. That is, the two ends of the second connecting piece 115 can be connected with the second shell 112 and the third shell 113 by socket welding, so as to improve the welding strength of the second connecting piece 115 with the second shell 112 and the third shell 113, further reduce the risk of fracture between the second connecting piece 115 and the second shell 112 and the third shell 113 due to excessive gas pressure in the accommodating cavity 116, and ensure the safety and stability of the gas-liquid separator 10.

[0056] In the second connecting piece 115, a third filter 15 is arranged, which can be a filter screen structure. After the mixture of hydrogen and liquid water enters the accommodating cavity 116 through the guide pipe 12, the hydrogen diffuses upward and enters the third shell 113 after being filtered by the third filter 15, and then is discharged from the gas outlet 1131 on the third shell 113. The third filter 15 is used for secondary filtering and separating the residual liquid water in the hydrogen, so as to obtain dry hydrogen. The dried hydrogen is collected in the third shell 113 and output to the hydrogen-consuming equipment through the gas outlet 1131 for use.

[0057] It should be noted that the third filter screen can also be arranged in the third shell 113, as long as the third filter 15 is arranged below the third interface 1133 to avoid the influence of the residual liquid water in the hydrogen on the probe of the pressure sensor, so that the pressure sensor can monitor the output pressure of the hydrogen in the gas-liquid separator 10 in real time and stably, thereby ensuring the safety and stability of the gas-liquid separator 10.

[0058] The embodiments of the present application also provide a hydrogen production device, which comprises a gas-liquid separator, and the specific structure of the gas-liquid separator is referred to the above-mentioned embodiments. Since the hydrogen production device adopts all the technical solutions of the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here.

[0059] The hydrogen production device comprises a hydrogen production device and a gas-liquid separator 10, wherein the hydrogen production device can adopt water electrolysis to produce hydrogen, an output port of the hydrogen production device is communicated with a gas inlet 1121 of the gas-liquid separator 10, a mixture of hydrogen and liquid water generated in the hydrogen production process of the hydrogen production device enters a guide pipe 12 of the gas-liquid separator 10 through the gas inlet 1121 of the gas-liquid separator 10, and then enters a containing cavity 116 of the gas-liquid separator 10 after being filtered by a first filter 13, and the first filter 13 can reduce the flow rate of the mixture by providing resistance and atomization effect, so as to alleviate the impact on the liquid level in the containing cavity 116 of the gas-liquid separator 10.

[0060] After the mixture enters the containing cavity 116, the liquid water in the mixture will be deposited downward under the action of gravity, and then be filtered by a second filter 14 of the gas-liquid separator 10 to remove impurities in the liquid water, and the filtered liquid water can be discharged through a liquid discharge port 1112 and then be recycled to the hydrogen production device. At this time, the hydrogen in the mixture will diffuse upward, and then the residual liquid water in the hydrogen is filtered and separated by a third filter 15 of the gas-liquid separator 10 to obtain dry hydrogen, and then the dry hydrogen is output to a hydrogen-using device through a gas outlet 1131 of the gas-liquid separator 10 for use.

[0061] The above describes the embodiments of the present application in detail, and the principles and implementation modes of the present application are described by applying specific examples; the above embodiment descriptions are only used to help understand the method of the present application and its core idea; meanwhile, for those skilled in the art, according to the idea of the present application, the specific implementation mode and application range can be changed, and the above description should not be understood as limiting the present application.

Claims

1. A gas-liquid separator characterized by, The gas-liquid separator comprises a shell assembly, a guide pipe and a first filter. The shell assembly is formed with a receiving cavity, and an air inlet and an air outlet are arranged on the side wall of the shell assembly and communicate with the receiving cavity. The guide pipe is at least partially located in the receiving cavity and communicates the air inlet with the receiving cavity.

2. The gas-liquid separator of claim 1, wherein, The portion of the guide pipe located in the receiving cavity is inclined away from the air outlet.

3. The gas-liquid separator of claim 2, wherein, The first filter is located in the receiving cavity and connected with the guide pipe.

4. The gas-liquid separator according to any one of claims 1 to 3, characterized in that The first filter is formed with a filter channel which communicates the guide pipe with the receiving cavity.

5. The gas-liquid separator according to any one of claims 1 to 3, characterized in that, The guide pipe comprises an elbow pipe.

6. The gas-liquid separator of claim 5, wherein, A first interface is arranged on the side wall of the shell assembly and communicates with the receiving cavity.

7. The gas-liquid separator of claim 6, wherein, The first interface is used for connecting with a first liquid level sensor.

8. The gas-liquid separator according to any one of claims 1 to 3, characterized in that The intersection of the extension line of the flow direction corresponding to the outlet of the guide pipe with the side wall of the shell assembly is located on the side of the first interface away from the air outlet.

9. The gas-liquid separator of claim 8, wherein, A second interface is arranged on the side wall of the shell assembly and communicates with the receiving cavity. The second interface is used for connecting with a second liquid level sensor. The intersection of the extension line of the flow direction corresponding to the outlet of the guide pipe with the side wall of the shell assembly is located between the first interface and the second interface.

10. The gas-liquid separator of claim 8, wherein, The shell assembly comprises a first shell, a second shell and a third shell arranged in sequence along the axial direction of the shell assembly. The side wall of the first shell is provided with a liquid discharge port. The side wall of the second shell is provided with the air inlet.

11. A hydrogen production apparatus, characterized by comprising: The side wall of the third shell is provided with the air outlet. The shell assembly further comprises a first connecting member connected between the first shell and the second shell. The side of the first shell facing the first connecting member is provided with a first mounting groove. The first connecting member is embedded in the first mounting groove. The second shell is provided with a second mounting groove facing the first connecting member. The second connecting member is embedded in the second mounting groove. The shell assembly further comprises a second connecting member connected between the second shell and the third shell. The side of the second shell facing the second connecting member is provided with a third mounting groove. The second connecting member is embedded in the third mounting groove. The third shell is provided with a fourth mounting groove facing the second connecting member. The second connecting member is embedded in the fourth mounting groove. The hydrogen production device comprises the gas-liquid separator according to any one of claims 1 to 10.

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