Hydrogen mixer

Abstract

The utility model discloses a hydrogen mixer which comprises a shell, the shell is connected with a mixing piece used for mixing hydrogen, and the mixing piece comprises a pressure release valve arranged at the top of the shell and used for performing pressure release treatment on the interior of the shell; the first gas inlet pipe is obliquely arranged on the right side of the shell and used for introducing dry and cold hydrogen; the second gas inlet pipe is obliquely arranged on the left side of the shell and used for introducing wet and hot hydrogen; and the separation piece is arranged at the bottom of the shell and is used for steam-water separation. According to the hydrogen mixer, dry and cold hydrogen and humid and hot hydrogen are guided into the shell through the first gas inlet pipe and the second gas inlet pipe respectively, the humid and hot hydrogen and the dry and cold hydrogen are subjected to convection and fully mixed, water vapor in part of the humid and hot hydrogen is liquefied when cooled, and water drops and cooling water in the mixed hydrogen are intercepted through the drainage hole plate; and then the water falls into the bottom of the separation shell through the drainage holes in the drainage hole plate, so that the wet and hot hydrogen and the dry and cold hydrogen are mixed in advance.

Description

Technical Field

[0001] This utility model relates to the field of hydrogen mixer technology, specifically a hydrogen mixer. Background Technology

[0002] In the domestic petroleum refining and chemical industry, hydrogen mixers are required. Referring to the patented invention CN213032313U, a hydrogen mixer includes a channel pipe with a hydrogen port at the top and a flange interface at the bottom. A feed inlet is connected to the top side of the channel pipe. Hydrogen and reactants entering from different directions drive a rotating shaft, rotating blades to improve mixing efficiency. However, as described in the patent, when existing hydrogen mixers are used, the hydrogen flow rate is high at medium to high power levels. The water vapor carried by the hydrogen outlet is difficult for the vapor separator to completely separate. The wet hydrogen after passing through the vapor separator is further pressurized and heated by a circulating pump. When mixed with dry hydrogen from an external hydrogen cylinder, a large amount of condensate occurs, causing flooding of the hydrogen manifold and distribution channels. Furthermore, uneven hydrogen temperature can affect the inconsistent reaction of the bipolar plates in the fuel cell stack. Utility Model Content

[0003] To address the shortcomings of existing technologies, this invention provides a hydrogen mixer that solves problems such as uneven hydrogen temperature and excessive moisture content in the feed gas.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a hydrogen mixer, comprising a housing, wherein the housing is connected to a mixing component for hydrogen mixing, the mixing component comprising:

[0005] Pressure relief valve, located at the top of the housing, is used for pressure relief inside the housing;

[0006] The first air inlet pipe is inclined and set on the right side of the housing for the introduction of dry and cold hydrogen gas;

[0007] The second air inlet pipe is inclined and set on the left side of the housing for the introduction of humid hydrogen gas.

[0008] A separator is installed at the bottom of the housing for gas-water separation. The separator includes a separator shell installed at the bottom of the housing. The inner side of the separator shell is provided with a drain plate for intercepting large water droplets. The lower rear end of the separator shell is provided with an exhaust pipe for discharging mixed hydrogen gas.

[0009] A drain valve, installed at the bottom of the housing, is used to drain retained water.

[0010] Preferably, the lower edge of the housing is threaded with an array of first bolts for fixing the separation shell, the mating end of the housing and the separation shell is provided with a sealing washer, and the edge of the separation shell is provided with a first threaded hole for threaded connection with the first bolts.

[0011] Preferably, the bottom edge of the separation shell is threaded with an array of second bolts for fixing the drain valve, and the edge of the drain valve is provided with an array of second threaded holes corresponding to the second bolts.

[0012] Preferably, the separating component further includes a retaining ring installed inside the separating shell for limiting the position of the drain hole plate. The drain hole plate is inclinedly disposed on the retaining ring and has a plurality of drain holes for drainage on its upper surface. A set of extension rods is respectively installed on the front and rear middle parts of the drain hole plate. The tops of the two sets of extension rods are flush and both are fixedly connected to pull rings. A liquid level sensor for detecting the level of stagnant water is provided on the lower left end inside the separating shell.

[0013] Preferably, the inner wall of the separation shell is fitted to the edge of the pull ring, the drainage hole plate is made of stainless steel, and the retaining ring is made of magnetic material to attract the drainage hole plate.

[0014] Preferably, the exhaust pipe is connected to an external fuel cell stack, the pressure relief valve has a pressure relief port on the right side for high-pressure hydrogen emission, and the interior of the housing is connected to the first intake pipe and the second intake pipe respectively.

[0015] This invention provides a hydrogen mixer. Compared with the prior art, it has the following advantages:

[0016] (1) The hydrogen mixer, by setting a separator in the device, introduces dry and cold hydrogen and wet and hot hydrogen into the shell through the first inlet pipe and the second inlet pipe respectively. The wet and hot hydrogen and dry and cold hydrogen are fully mixed by convection. Some of the water vapor in the wet and hot hydrogen liquefies when it is cooled. The drain plate intercepts water droplets and cooling water in the mixed hydrogen. Then the water falls into the bottom of the separation shell through the drain hole on the drain plate. This setting allows the wet and hot hydrogen and dry and cold hydrogen to mix in advance, avoiding uneven hydrogen intake caused by simultaneous entry into the stack. When the drain plate needs to be replaced, the first bolt is removed to separate the shell from the separation shell. The drain plate is pulled out by the pull ring and extension rod. The drain plate is replaced and its bottom is made to fit with the retaining ring. The retaining ring has the function of limiting and adsorbing the drain plate, which makes it easy for the user to quickly replace the drain plate.

[0017] (2) The hydrogen mixer is equipped with a drain valve. During the hydrogen mixing process, the liquid level sensor detects the liquid level at the bottom of the separation shell. After the bottom of the separation shell reaches a suitable liquid level, the drain valve is opened to discharge the stagnant water, thus preventing the direct water from overflowing from the exhaust pipe. This setting avoids excessive water precipitation during the mixing of wet and hot hydrogen and dry and cold hydrogen, which would cause water to flood the hydrogen inlet. Attached Figure Description

[0018] Figure 1 This is a perspective view of the present utility model;

[0019] Figure 2 This is a front sectional view of the present invention;

[0020] Figure 3 This is a front view of the present invention;

[0021] Figure 4 This is a side sectional view of the present invention;

[0022] Figure 5 This is a side view of the present invention.

[0023] In the diagram: 1. Housing; 2. Pressure relief valve; 3. First air inlet pipe; 4. Second air inlet pipe; 5. Separator; 51. Separator shell; 52. Drain plate; 53. Exhaust pipe; 54. Liquid level sensor; 55. Retaining ring; 56. Extension rod; 57. Pull ring; 6. Drain valve; 7. First bolt; 8. Second bolt. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] refer to Figure 1-5 This utility model provides the following two technical solutions:

[0026] First embodiment: A hydrogen mixer includes a housing 1, the housing 1 being connected to a mixing component for hydrogen mixing, the mixing component including: a pressure relief valve 2, disposed at the top of the housing 1 for internal pressure relief; a first inlet pipe 3, obliquely disposed on the right side of the housing 1 for introducing dry and cold hydrogen; a second inlet pipe 4, obliquely disposed on the left side of the housing 1 for introducing humid and hot hydrogen; and a separator 5, installed at the bottom of the housing 1 for gas-water separation, the separator 5 including a separator shell 51 installed at the bottom of the housing 1, the inner side of the separator shell 51 being provided with a drain plate 52 for intercepting large water droplets, and the lower rear end of the separator shell 51 being provided with an exhaust pipe 53 for discharging mixed hydrogen.

[0027] A drain valve 6 is installed at the bottom of the housing 1 for draining stagnant water; an array of first bolts 7 for fixing the separation shell 51 are threadedly connected to the lower edge of the housing 1; a sealing gasket is provided at the mating end of the housing 1 and the separation shell 51; a first threaded hole for threaded connection with the first bolts 7 is provided at the edge of the separation shell 51; the separation component 5 also includes a retaining ring 55 installed inside the separation shell 51 for limiting the drain hole plate 52; the drain hole plate 52 is inclinedly arranged on the retaining ring 55 and has a number of drain holes for draining on its upper surface; a set of extension rods 56 are respectively installed on the front and rear middle parts of the drain hole plate 52; the tops of the two sets of extension rods 56 are flush and both are fixedly connected to pull rings 57; a liquid level sensor 54 for detecting the liquid level of stagnant water is provided at the lower left end inside the separation shell 51;

[0028] The inner wall of the separation shell 51 is fitted to the edge of the pull ring 57. The drain plate 52 is made of stainless steel, and the retaining ring 55 is made of magnet to attract the drain plate 52. The exhaust pipe 53 is connected to the external fuel cell stack. The pressure relief valve 2 has a pressure relief port on the right side for high-pressure hydrogen discharge. The inside of the shell 1 is connected to the first intake pipe 3 and the second intake pipe 4 respectively. Dry and cold hydrogen and wet and hot hydrogen are introduced into the shell 1 through the first intake pipe 3 and the second intake pipe 4 respectively. The wet and hot hydrogen and dry and cold hydrogen are fully mixed by convection. Water vapor in some of the hot and humid hydrogen gas liquefies upon cooling, while the drain plate 52 intercepts water droplets and cooling water in the mixed hydrogen gas. The water then falls into the bottom of the separation shell 51 through the drain holes on the drain plate 52. When the drain plate 52 needs to be replaced, the first bolt 7 is removed to separate the shell 1 from the separation shell 51. The drain plate 52 is then pulled out through the pull ring 57 and the extension rod 56. The drain plate 52 is replaced and its bottom is made to fit against the retaining ring 55. The retaining ring 55 serves to limit and adsorb the drain plate 52.

[0029] The main difference between the second implementation method and the first implementation method is that:

[0030] The bottom edge of the separation shell 51 is threaded with an array of second bolts 8 for fixing the drain valve 6. The edge of the drain valve 6 is provided with an array of second threaded holes corresponding to the second bolts 8. The liquid level sensor 54 detects the liquid level at the bottom of the separation shell 51. After the bottom of the separation shell 51 reaches a suitable liquid level, the drain valve 6 is opened to discharge the stagnant water and prevent direct water from overflowing from the exhaust pipe 53.

[0031] Furthermore, all content not described in detail in this specification is existing technology known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited; conventional equipment can be used.

[0032] In use, the user connects the first intake pipe 3 to the dry-cold hydrogen inlet and the second intake pipe 4 to the wet-hot hydrogen inlet. The pressure relief valve 2's exhaust end is connected to the hydrogen recovery end. Dry-cold hydrogen is introduced into the housing 1 through the first intake pipe 3, and wet-hot hydrogen is introduced into the housing 1 through the second intake pipe 4. The wet-hot hydrogen and dry-cold hydrogen inside the housing 1 are thoroughly mixed via convection. Some of the water vapor in the wet-hot hydrogen liquefies upon cooling. The drain plate 52 intercepts water droplets and cooling water in the mixed hydrogen. The water then falls through the drain holes on the drain plate 52 into the bottom of the separation shell 51. Finally, the mixed hydrogen is discharged through the exhaust pipe 5. 3. When the hydrogen flow rate inside the housing 1 is too high, the pressure relief valve 2 relieves the pressure inside the housing 1. The liquid level sensor 54 detects the liquid level at the bottom of the separation shell 51. After the liquid level at the bottom of the separation shell 51 reaches a suitable level, the drain valve 6 is opened to drain the stagnant water. When the drain plate 52 needs to be replaced, the first bolt 7 is removed to separate the housing 1 from the separation shell 51. The drain plate 52 is pulled out through the pull ring 57 and the extension rod 56. The drain plate 52 is replaced and its bottom is made to fit against the retaining ring 55. Since the retaining ring 55 is made of magnetic material, the drain plate 52 can be attracted to the retaining ring 55.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hydrogen gas mixer comprising a housing (1), characterized in that: The shell (1) is connected with a mixing element for hydrogen gas mixing, the mixing element comprises: A pressure relief valve (2) is arranged at the top of the shell (1) for pressure relief treatment inside the shell (1); A first air inlet pipe (3) is arranged obliquely at the right side of the shell (1) for dry hydrogen gas introduction; A second air inlet pipe (4) is arranged obliquely at the left side of the shell (1) for wet hydrogen gas introduction; A separation element (5) is installed at the bottom of the shell (1) for steam-water separation, the separation element (5) comprises a separation shell (51) installed at the bottom of the shell (1), a drain hole plate (52) for intercepting large water droplets is arranged inside the separation shell (51), and a gas exhaust pipe (53) for mixed hydrogen gas exhaust is arranged at the lower end of the rear side of the separation shell (51); A drain valve (6) is installed at the bottom of the shell (1) for retained water discharge.

2. A hydrogen gas mixer according to claim 1, wherein: A plurality of first bolts (7) for fixing the separation shell (51) are threadedly connected to the lower edge of the shell (1), the shell (1) and the separation shell (51) are provided with sealing washers at the abutting ends, and the edge of the separation shell (51) is provided with a plurality of first screw holes threadedly connected with the first bolts (7).

3. The hydrogen gas mixer of claim 1, wherein: A plurality of second bolts (8) for fixing the drain valve (6) are threadedly connected to the bottom edge of the separation shell (51), and the edge of the drain valve (6) is provided with a plurality of second screw holes corresponding to the second bolts (8).

4. The hydrogen gas mixer of claim 1, wherein: The separation element (5) further comprises a retaining ring (55) installed in the separation shell (51) for limiting the drain hole plate (52), the drain hole plate (52) is arranged obliquely on the retaining ring (55) and is provided with a plurality of drain holes on the upper surface for water drainage, a group of elongated rods (56) are respectively installed on the front side and the middle part of the rear side of the drain hole plate (52), the top parts of the two groups of elongated rods (56) are flush and are fixedly connected with a pull ring (57), and a liquid level sensor (54) for detecting the liquid level of the retained water is arranged at the lower left end of the inside of the separation shell (51).

5. A hydrogen gas mixer according to claim 4, wherein: The inner wall of the separation shell (51) is attached to the edge of the pull ring (57), the drain hole plate (52) is made of stainless steel material, and the retaining ring (55) is made of magnet material for adsorbing the drain hole plate (52).

6. The hydrogen gas mixer of claim 1, wherein: The gas exhaust pipe (53) is connected with the outside fuel cell, the right side of the pressure relief valve (2) is provided with a pressure relief port for high-pressure hydrogen gas discharge, and the inside of the shell (1) is respectively communicated with the first air inlet pipe (3) and the second air inlet pipe (4).

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