Anti-settling fuel cell slurry storage tank

Abstract

The utility model discloses an anti-settling fuel cell slurry storage tank which ensures reliable and stable storage of fuel cell slurry. The device comprises a tank body which is a double-layer hollow tank body, the tank body comprises an outer wall, an inner wall and a hollow cavity, and a slurry containing cavity is formed in the inner wall; the tank cover comprises a cover ring part and a top cover plate; the stirring assembly comprises a stirring motor, a stirring shaft and a stirring paddle; at least one cooling water inlet and at least one cooling water outlet are formed in the position, corresponding to the outer wall, of the hollow cavity, cooling water flows into the hollow cavity along the cooling water inlet, and the cooling water flows out of the hollow cavity along the cooling water outlet; a laterally convex storage tank discharging opening is formed in the bottom, corresponding to the circumference of the tank body, of the slurry containing cavity, the slurry in the slurry containing cavity is released to the outside through the storage tank discharging opening, and a switching mechanism is integrated on the storage tank discharging opening.

Description

Technical Field

[0001] The utility model relates to the technical field of battery slurry storage, and particularly relates to a sedimentation-proof fuel cell slurry storage tank. Background Art

[0002] Fuel cell slurry needs to experience several days or even months from preparation to complete use. During this period, the fuel cell slurry will undergo microscopic changes under the influence of the environment and time. For example, catalyst particles agglomerate, solids settle, the rheological properties of the fuel cell slurry change, affecting the coating state, appearance and performance in many aspects. In addition, it will also cause poor product consistency and low yield.

[0003] There is no existing technology for a long-term storage device for fuel cell slurry, so it is urgent to develop a storage device that can be used to store fuel cell slurry. Content of the Utility Model

[0004] In view of the above problems, the utility model provides a sedimentation-proof fuel cell slurry storage tank, which enables the particle size of the fuel cell slurry stored therein to have no obvious change and the performance of the membrane electrode made therefrom to have no attenuation, ensuring the reliable and stable storage of the fuel cell slurry.

[0005] A sedimentation-proof fuel cell slurry storage tank, characterized in that it comprises:

[0006] A tank body, which is a double-layer hollow tank body. The tank body includes an outer wall, an inner wall, and a hollow cavity. A slurry placement cavity is formed inside the inner wall;

[0007] A tank cover, which includes a cover ring part and a top cover plate;

[0008] And a stirring assembly, which includes a stirring motor, a stirring shaft, and stirring paddles;

[0009] At least one cooling water inlet and at least one cooling water outlet are provided at positions corresponding to the outer wall of the hollow cavity. Cooling water flows into the hollow cavity along the cooling water inlet and flows out of the hollow cavity along the cooling water outlet;

[0010] A storage tank discharge port protruding laterally is provided at the bottom corresponding to the circumferential direction of the tank body of the slurry placement cavity. The storage tank discharge port releases the slurry in the slurry placement cavity to the outside, and a switching mechanism is integrated on the storage tank discharge port;

[0011] A protective gas inlet and outlet is provided on the top cover plate. After the tank cover is installed on the tank body, the protective gas inlet and outlet is communicated with the slurry placement cavity. The stirring motor is supported on the top cover plate. The output shaft of the stirring motor protrudes downward from the top cover plate and is fixedly connected to the stirring shaft. The stirring paddles are fixedly sleeved on the stirring shaft.

[0012] It is further characterized in that:

[0013] The paddle blades of the stirring paddle are arranged in the height direction, and the height of the paddle blades covers at least two-thirds of the height area of the slurry placement cavity, ensuring sufficient and reliable stirring operation for the slurry;

[0014] At least one thermocouple is externally connected to the slurry placement cavity. The channels through which the thermocouple communicates with the slurry placement cavity penetrate the outer wall and the inner wall on both sides of the hollow cavity and are sealed later. The thermocouple is used to reliably measure the storage temperature of the slurry, and thus reliably control the input and output amounts of cooling water;

[0015] A pressure gauge is also fixedly installed on the top cover plate. The lower measuring point of the pressure gauge penetrates the top cover plate and then communicates with the slurry placement cavity. Protective gas is injected into the slurry placement cavity through the protective gas inlet and outlet, and the protective gas pressure in the slurry placement cavity is detected by the pressure gauge, so as to ensure that the protective gas in the slurry placement cavity is always within the stable protective gas pressure range;

[0016] The upper ring part of the inner wall protrudes upward to form an inner ring stop mechanism of the cover ring part, ensuring that the tank cover is reliably installed on the tank body;

[0017] A cooling water inlet is arranged at the bottom area of the annular area of the outer wall corresponding to the hollow cavity, and a cooling water outlet is arranged at the upper area of the annular area of the outer wall corresponding to the hollow cavity, which ensures that the cooling water can fill most of the hollow cavity;

[0018] The stirring paddle includes a sleeved part and a number of paddle blades arranged in a ring. Each group of paddle blades includes a radial connecting part and a stirring blade end. The stirring blade end is arranged vertically. The sleeved part is fixedly sleeved on the bottom of the stirring shaft. The inner ends of a number of radial connecting parts are circumferentially arranged on the outer periphery of the sleeved part, and the outer ends of each radial connecting part are respectively provided with a vertically arranged stirring blade end, which ensures sufficient and reliable stirring of the stirring paddle for the slurry.

[0019] After adopting the structure of the present utility model, when it is necessary to place the slurry, since the tank cover integrated with the stirring paddle is inside the tank body, the tank cover can only be lifted vertically to prevent collision. After opening the tank cover, the slurry is put into the slurry placement cavity of the tank body; when storing in a large capacity, a lifting platform is configured to drive the lifting of the tank cover, and when storing in a small capacity (<10L), the tank cover can be lifted by hand, and then the tank cover is closed; cooling water is injected into the hollow cavity to control the storage temperature of the slurry at 5-20°C. Nitrogen with a certain pressure is injected into the slurry placement cavity through the protective gas inlet and outlet. The particle size of the slurry stored for a long time according to the set conditions has no obvious change, the solid content at the upper, middle and lower liquid levels of the slurry stored for a long time has no obvious high or low fluctuation, and the performance of the membrane electrode made of the slurry stored for a long time has no attenuation; ensuring reliable and stable storage of the fuel cell slurry. Description of the Drawings

[0020] Figure 1 Schematic diagram of the three-dimensional structure of the present utility model;

[0021] Figure 2 Exploded three-dimensional schematic diagram of the tank body and the tank cover of the present utility model;

[0022] Figure 3 Schematic sectional view of the present utility model;

[0023] The names corresponding to the serial numbers in the figure are as follows:

[0024] Tank body 10, outer wall 11, inner wall 12, inner ring stop mechanism 121, hollow cavity 13, slurry placement cavity 14, cooling water inlet 15, cooling water outlet 16, storage tank discharge port 17, faucet mechanism 18, channel 19, tank cover 20, cover ring part 21, top cover plate 22, protective gas inlet and outlet 23, stirring assembly 30, stirring motor 40, stirring shaft 50, stirring paddle 60, sleeve part 61, paddle blade 62, radial connecting part 621, stirring blade end 622, thermocouple 70, pressure gauge 80. Specific embodiments

[0025] It should be noted that, without conflict, the embodiments and features in the embodiments of the present utility model can be combined with each other.

[0026] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0027] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0028] The present utility model will be described in detail below with reference to the drawings and in conjunction with the embodiments.

[0029] An anti-settlement fuel cell slurry storage tank, see Figures 1 - 3 , which includes a tank body 10, a tank cover 20, and a stirring assembly 30;

[0030] The tank body 10 is a double-layer hollow tank body, which includes an outer wall 11, an inner wall 12, and a hollow cavity 13. A slurry placement cavity 14 is formed inside the inner wall 12;

[0031] The tank cover 20 includes a cover ring part 21 and a top cover plate 22;

[0032] The stirring assembly 30 includes a stirring motor 40, a stirring shaft 50, and stirring paddles 60.

[0033] In a specific embodiment, a cooling water inlet 15 is provided at the bottom area of the annular area of the outer wall 11 corresponding to the hollow cavity 13, and a cooling water outlet 16 is provided at the upper area of the annular area of the outer wall 11 corresponding to the hollow cavity 13. The cooling water flows into the hollow cavity 11 along the cooling water inlet 15, and the cooling water flows out of the hollow cavity 11 along the cooling water outlet 16, which ensures that the cooling water can fill most of the hollow cavity 11;

[0034] A side-convex storage tank discharge port 17 is provided at the bottom of the slurry placement cavity 14 corresponding to the circumference of the tank body 10. The storage tank discharge port 17 releases the slurry in the slurry placement cavity to the outside, and a faucet mechanism 18 is integrated on the storage tank discharge port 17;

[0035] A protective gas inlet / outlet port 23 is provided on the top cover plate 22. After the tank cover 20 is installed on the tank body 10, the protective gas inlet / outlet port 23 is communicated with the slurry placement cavity 14. The stirring motor 40 is fixedly installed at the center position of the top cover plate 22 and protrudes upward. The output shaft of the stirring motor 40 protrudes downward from the top cover plate 22 and is fixedly connected to the stirring shaft 50. Stirring paddles 60 are fixedly sleeved on the stirring shaft 50.

[0036] The blades 61 of the stirring paddles 60 are arranged along the height direction of the tank body 10, and the height of the blades 61 covers at least two-thirds of the height area of the slurry placement cavity 14, ensuring sufficient and reliable stirring operation for the slurry;

[0037] The slurry placement cavity 14 is also externally connected with a thermocouple 70. The channel 19 through which the thermocouple 70 communicates with the slurry placement cavity 14 penetrates through the outer wall 11 and the inner wall 12 on both sides of the hollow cavity and is sealed later. The channel 19 is located at one-third of the height position of the slurry placement cavity 14. The thermocouple 70 is used to reliably measure the storage temperature of the slurry, and thus reliably control the input and output amounts of the cooling water;

[0038] An air pressure gauge 80 is also fixedly installed on the top cover plate 22. The lower measuring point of the air pressure gauge 80 penetrates through the top cover plate 22 and then communicates with the slurry placement cavity 14. A protective gas is injected into the slurry placement cavity 14 through the protective gas inlet and outlet 23, and the air pressure of the protective gas in the slurry placement cavity 14 is detected by the pressure gauge 80, so as to ensure that the protective gas in the slurry placement cavity 14 is always within the stable protective air pressure range;

[0039] The upper ring part of the inner wall 12 protrudes upward to form the inner ring stop mechanism 121 of the cover ring part, ensuring that the tank cover 20 is reliably installed on the tank body 10;

[0040] The stirring paddle 60 includes a sleeved part 61 and three groups of blades 62 arranged in a ring. Each group of blades 62 includes a radial connecting part 621 and a stirring blade end 622. The stirring blade ends 622 are arranged vertically. The sleeved part 61 is fixedly sleeved on the bottom of the stirring shaft 50. The inner ends of three radial connecting parts 621 are arranged in a ring on the outer circumference of the sleeved part 61. The outer ends of each radial connecting part 621 are respectively provided with vertically arranged stirring blade ends 622, which ensures the full and reliable stirring of the slurry by the stirring paddle.

[0041] Its working process is as follows: When it is necessary to place the slurry, since the tank cover integrates the stirring paddle inside the tank body, the tank cover can only be lifted vertically to prevent collision when it is opened. After the tank cover is opened, the slurry is put into the slurry placement cavity of the tank body; When storing in large quantities, a lifting platform is configured to drive the tank cover to lift and lower. When storing in small quantities (<10L), the tank cover can be lifted by hand. Then the tank cover is closed; Cooling water is injected into the hollow cavity, and the temperature of the stored slurry is controlled at 5-20°C and monitored by the thermocouple at all times. The cooling water operation is carried out according to the temperature displayed by the thermocouple, and the excess cooling water is discharged through the cooling water outlet; Nitrogen with a certain pressure is injected into the slurry placement cavity through the protective gas inlet and outlet, so that the pressure shown on the pressure gauge is 10Kpa±1Kpa. At the same time, the stirring motor is started, so that the stirring paddle stirs the slurry at a speed of 50rpm / min. According to the above set conditions, the particle size of the slurry stored for a long time has no obvious change, the solid content at the upper, middle and lower liquid levels of the slurry stored for a long time has no obvious high or low fluctuation, and the performance of the membrane electrode made of the slurry stored for a long time has no attenuation; It ensures the reliable and stable storage of the fuel cell slurry.

[0042] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0043] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment contains only an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An anti-settling fuel cell slurry storage tank, characterized in that It includes: A tank body, which is a double-layer hollow tank body. The tank body includes an outer wall, an inner wall, and a hollow cavity. A slurry placement cavity is formed inside the inner wall; A tank cover, which includes a cover ring part and a top cover plate; And a stirring assembly, which includes a stirring motor, a stirring shaft, and stirring paddles; At least one cooling water inlet and at least one cooling water outlet are provided at positions corresponding to the outer wall of the hollow cavity. Cooling water flows into the hollow cavity along the cooling water inlet, and cooling water flows out of the hollow cavity along the cooling water outlet; A side-convex storage tank discharge port is provided at the bottom corresponding to the circumferential direction of the tank body in the slurry placement cavity. The storage tank discharge port releases the slurry in the slurry placement cavity to the outside, and a switching mechanism is integrated on the storage tank discharge port; A protective gas inlet and outlet is provided on the top cover plate. After the tank cover is installed on the tank body, the protective gas inlet and outlet is communicated with the slurry placement cavity. The stirring motor is supported on the top cover plate. The output shaft of the stirring motor protrudes downward from the top cover plate and is fixedly connected to the stirring shaft. The stirring paddles are fixedly sleeved on the stirring shaft.

2. The anti-settling fuel cell slurry storage tank according to claim 1, wherein: The paddle blades of the stirring paddle are arranged in the height direction, and the height of the paddle blades covers at least two-thirds of the height area of the slurry placement cavity.

3. A sedimentation-proof fuel cell slurry storage tank according to claim 1, characterized in that: At least one thermocouple is externally connected to the slurry placement cavity. The channels through which the thermocouple communicates with the slurry placement cavity penetrate the outer wall and the inner wall on both sides of the hollow cavity and are sealed later. The thermocouple is used to reliably measure the storage temperature of the slurry, and thus reliably control the input and output amounts of the cooling water.

4. A sedimentation-proof fuel cell slurry storage tank according to claim 1, characterized in that: A pressure gauge is also fixedly provided on the top cover plate. The lower measuring point of the pressure gauge penetrates the top cover plate and is communicated with the slurry placement cavity. Protective gas is injected into the slurry placement cavity through the protective gas inlet and outlet, and the pressure of the protective gas in the slurry placement cavity is detected by the pressure gauge.

5. A fuel cell slurry storage tank for preventing settlement according to claim 1, characterized in that: The upper ring part of the inner wall protrudes upward to form an inner ring stop mechanism of the cover ring part.

6. The anti-settlement fuel cell slurry storage tank according to claim 1, characterized in that: One cooling water inlet is provided at the bottom area of the annular area corresponding to the outer wall of the hollow cavity, and one cooling water outlet is provided at the upper area of the annular area corresponding to the outer wall of the hollow cavity.

7. A settlement-proof fuel cell slurry storage tank according to claim 1 or 2, characterized in that: The stirring paddle includes a sleeved part and a number of circumferentially distributed paddle blades. Each group of paddle blades includes a radial connecting part and a stirring blade end. The stirring blade ends are arranged vertically. The sleeved part is fixedly sleeved on the bottom of the stirring shaft. The inner ends of a number of radial connecting parts are circumferentially distributed on the outer periphery of the sleeved part, and the outer ends of each radial connecting part are respectively provided with vertically arranged stirring blade ends.

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