CN210182489U

CN210182489U - Closed-pore enhanced treatment system for graphite polar plate of fuel cell

Info

Publication number: CN210182489U
Application number: CN201921071221.2U
Authority: CN
Inventors: Shiyang Hua; 花仕洋; Xiao Fang; 方晓; Xin Jin; 金鑫; Hui Zeng; 曾辉; Engao Peng; 彭恩高
Original assignee: Wuhan Institute of Marine Electric Propulsion China Shipbuilding Industry Corp No 712 Institute CSIC
Current assignee: Wuhan Institute of Marine Electric Propulsion China Shipbuilding Industry Corp No 712 Institute CSIC
Priority date: 2019-07-09
Filing date: 2019-07-09
Publication date: 2020-03-24
Anticipated expiration: 2029-07-09

Abstract

The utility model provides a obturator reinforcing processing system for fuel cell graphite polar plate, it includes polar plate hoist and mount loading attachment, a drying device for carrying out drying with heat to the graphite polar plate, an injecting glue device for carrying out the injecting glue to the graphite polar plate, washing device and solidification equipment, hoist and mount loading attachment is including the hanging flower basket that is used for loading the graphite polar plate and the transport mechanism who is used for transporting the hanging flower basket, drying device includes inside drying cabinet that has dry cavity and carries out the heating mechanism of heat supply to dry cavity, the injecting glue device is including inside the injecting glue jar that has the injecting glue cavity, a decompression mechanism for carrying out the pressurization to the injecting glue cavity and being used for carrying out the decompression to the injecting glue cavity, washing device is used for washing residual glue on the graphite polar plate, solidification equipment is used for the glue in the inside hole of solidification graphite polar plate. The mechanism can realize the closed reinforcing process of the graphite polar plate of the fuel cell by automatic continuous processing, and greatly improves the production efficiency.

Description

Closed-pore enhanced treatment system for graphite polar plate of fuel cell

Technical Field

The utility model discloses fuel cell technical field, concretely relates to obturator reinforcing processing system for fuel cell graphite polar plate.

Background

The fuel cell generates electricity by electrochemical reaction of chemical energy of hydrogen and oxygen, the hydrogen is dissociated into hydrogen ions at the anode, and the hydrogen ions pass through the proton exchange membrane and react with the oxygen at the cathode to generate water, and electrons pass through an external circuit from the anode to the cathode to form a current loop on the external circuit. The mode is not limited by Carnot cycle, and the energy conversion rate is 40-60%, and the method has the characteristics of cleanness, no pollution, no noise, no infrared and the like, is considered as a preferred high-efficiency and clean power generation technology in the 21 st century, is an ideal mobile power supply technology, and can be widely applied to various fields of automobile traffic, military standby power supplies, underwater vehicles and the like.

The cell plates, one of the key components of a fuel cell, account for 80% of the weight and 45% of the cost of a fuel cell stack, and serve the main functions of distributing reactant gases, transporting reactant products, collecting and conducting electrical current, supporting the membrane electrodes, transferring excess heat, and the like. Therefore, the electrode plate is required to have good mechanical strength and excellent airtightness.

The current electrode plate materials for fuel cells mainly include four types: the expanded graphite polar plate is formed by pressing natural crystalline flake graphite after oxidation intercalation and high-temperature expansion, belongs to a graphite polar plate, has excellent electrical conductivity, thermal conductivity, corrosion resistance and the like, and has wide potential in the application of fuel cell polar plates. The literature data shows that various micropores still exist in the microcosmic layered structure of the flexible graphite polar plate after compression molding, and the air tightness of the graphite polar plate is still directly influenced by the micropores; in addition, the bending strength of the structure is hard to bear only by the mutual engagement between the vermicular graphite, the whole mechanical strength of the polar plate is low, cracks, tearing and destructive damage are easy to cause, and the assembly and use requirements of the fuel cell are difficult to directly meet. Therefore, batch closed pore strengthening treatment is required to be carried out on the formed expanded graphite electrode plate to improve the air tightness and mechanical strength of the electrode plate and the consistency of products.

SUMMERY OF THE UTILITY MODEL

The utility model provides a obturator reinforcing processing system for fuel cell graphite polar plate for solve among the prior art graphite polar plate gas tightness poor, technical problem that mechanical strength is low.

The utility model provides a scheme as follows of above-mentioned technical problem: a closed-pore strengthening treatment system for a graphite polar plate of a fuel cell comprises a polar plate hoisting and feeding device, a drying device for heating and drying the graphite polar plate, an adhesive injection device for injecting adhesive into the graphite polar plate, a washing device and a curing device, the hoisting and feeding device comprises a hanging basket for loading the graphite pole plates and a transferring mechanism for transferring the hanging basket, the drying device comprises a drying box with a drying cavity inside and a heating mechanism for heating the drying cavity, the glue injection device comprises a glue injection tank with a glue injection cavity inside, a pressurizing mechanism for pressurizing the glue injection cavity and a pressure reducing mechanism for reducing the pressure of the glue injection cavity, the washing device is used for washing residual glue on the graphite pole plate, and the curing device is used for curing the glue in the inner hole of the graphite pole plate.

The utility model provides a pair of obturator reinforcing processing system for fuel cell graphite polar plate, it transports the hanging flower basket that has the graphite polar plate to drying device in proper order through transport mechanism, the injecting glue device, after washing device and solidification equipment and accomplished corresponding process, the glue of solidification has promptly been had in the inner wall hole of graphite polar plate, the gas tightness and the mechanical strength of graphite polar plate have been promoted greatly, because the graphite polar plate adopts the hanging flower basket to load, in the in-service use, can load according to the production demand in batches, can realize graphite polar plate injecting glue serialization, batch processing, be favorable to guaranteeing the quality uniformity of graphite polar plate preparation process with batch product, and the production efficiency is improved, and the treatment cost is reduced.

The above description is only an overview of the technical solution of the present invention, and in order to make the technical means of the present invention clearer and can be implemented according to the content of the description, the following detailed description is made with reference to the preferred embodiments of the present invention and accompanying drawings. The detailed description of the present invention is given by the following examples and the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without undue limitation to the invention. In the drawings:

fig. 1 is a schematic structural diagram of a closed-cell reinforcement processing system for a graphite electrode plate of a fuel cell according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a drying device in an embodiment of the present invention;

fig. 3 is a schematic structural view of a lifting assembly in an embodiment of the present invention;

fig. 4 is a schematic structural view of a glue injection tank in the glue injection device in the embodiment of the present invention;

FIG. 5 is a schematic view of a glue reservoir in the glue injection apparatus according to the embodiment of the present invention;

FIG. 6 is a schematic structural view of a rinsing apparatus according to an embodiment of the present invention;

fig. 7 is a schematic structural view of an ultrasonic cleaning apparatus according to an embodiment of the present invention;

FIG. 8 is a schematic structural view of a water bath curing device according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of a vacuum drying apparatus according to an embodiment of the present invention.

Detailed Description

The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention. The invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become more fully apparent from the following description and appended claims. It should be noted that the drawings are in simplified form and are not to precise scale, and are provided for convenience and clarity in order to facilitate the description of the embodiments of the present invention.

As shown in fig. 1 to 9, the utility model provides a obturator reinforcing treatment system for graphite polar plate of fuel cell, including polar plate hoist and mount loading attachment 1, be used for carrying out drying by heating drying device 2, be used for carrying out the injecting glue device 3, washing device 4 and solidification equipment 5 of injecting glue to the graphite polar plate, hoist and mount loading attachment 1 includes hanging flower basket 11 and the transport mechanism 12 that is used for transporting the hanging flower basket that are used for loading the graphite polar plate, drying device 2 includes the inside drying cabinet 21 that has dry cavity 2a and to the heating mechanism 22 that heats dry cavity 21a, injecting glue device 3 includes the inside injecting glue jar 31 that has injecting glue cavity 31a, is used for to the pressurization mechanism that injects glue cavity 3a carries out the pressurization and is used for carrying out the decompression mechanism that decompresses injecting glue cavity 3a, washing device 4 is used for washing residual glue on the graphite polar plate, the curing device 5 is used for curing glue in the inner pores of the graphite polar plate.

Specifically, the transfer mechanism 12 includes a hook 121 connected to the basket 11, a locking member 122 for locking the hook 121, a lifting assembly 123 for driving the basket 11 to ascend and descend, and a translation assembly 124 for driving the basket 11 to translate.

The lifting assembly 123 comprises a lifting motor 1231, a transmission gear 1232, a transmission chain 1233 and a vertical beam 1234, the transmission gear 1232 is driven by the lifting motor 1231 to drive the transmission chain 1233 to transmit, and a hanging basket 11 mounted on the transmission chain 1233 slides on the vertical beam 1234, so that the vertical movement of the hanging basket 11 is realized; the translation subassembly is including striding the crossbeam of locating drying device, injecting glue device, washing device and solidification equipment top, crossbeam cooperation gliding pulley, the rack of unanimous installation with crossbeam length direction and with rack cooperation driven gear, the rotatable one end of keeping away from the hanging flower basket of installing in the couple of this gear, rotate through motor drive gear and can realize the translation of hanging flower basket to satisfy the purpose that the hanging flower basket reachd drying device, injecting glue device, washing device and solidification equipment in proper order.

It will be appreciated that the embodiment of the lifting assembly and the translation assembly described above is only a preferred embodiment of the present invention, and in other embodiments, the skilled person can also achieve lifting and translation of the basket in other ways.

Specifically, in this embodiment, the drying device 2 further includes a gas circulation mechanism 23, the heating mechanism 22 is a gas heater, the gas heater is used for heating gas, and the gas circulation mechanism 23 is communicated with the drying box 21 and is used for introducing the heated gas into the drying box 21; drying cabinet 21 includes box 211, box apron 212 and first locking structure 213, the box is bilayer structure, it include the heat preservation and wrap up in the outside coating of heat preservation, box apron 212 passes through first locking structure 213 lock solid in the upper end opening part of box.

The gas circulation mechanism 23 is a blower, and in order to ensure that the graphite electrode plates in the box body are heated uniformly in the drying process, the blower ensures that the heating gas is always in a circulation state; in order to avoid secondary cracking caused by uneven heating of the graphite electrode plate in the drying box 21, a high-temperature water jacket 34 is arranged on the periphery of the drying box 21, and hot water is added into the high-temperature water jacket 34 to ensure that the graphite electrode plate and the interior are uniformly heated; the drying box 21 is provided with an air vent 25 for discharging the water of the graphite electrode plate heated and evaporated; the bottom of the drying box 21 is provided with a drain pipe 26 for discharging solid wastes which may contain dust impurities inside the graphite pole plate; meanwhile, an observation port 27 is reserved at the top of the drying box 21, and the drying condition of the graphite pole plates in the drying box 21 is observed regularly, wherein the drying time and the drying temperature can be determined according to the number of the hanging basket pole plates, and the drying time is generally selected to be 1.5-2h, and the drying temperature is 105-150 ℃.

The glue injection tank 31 comprises a tank body 311, a tank cover 312, a second locking mechanism 313 and a plurality of liquid level sensors (not shown in the figure), wherein the tank cover 312 is fixedly locked at an opening at the upper end of the tank body 311 through the second locking mechanism 313, and the plurality of liquid level sensors are arranged in the tank body 31 and used for detecting the liquid level in the glue injection cavity.

Preferably, the tank cover 312 is provided with an observation window 3121 through which the glue injection condition in the tank body 311 can be observed at any time; wherein, the pressure reducing mechanism is a vacuum pump 32, and two vacuum pumps are generally provided during the actual production, one for working and the other for standby; the pressurizing mechanism is an air compressor 33; in order to monitor the vacuum pressure in the glue injection cavity in real time, a vacuum pressure gauge can be arranged at the position adjacent to the glue injection tank; in order to prevent the volatile gas in the glue solution from entering the vacuum pump 32 during the vacuum pumping, the vacuum pump 32 is provided with an isolation pipe, so that the service life of the vacuum pump is effectively prolonged. During glue injection, the temperature of the glue needs to be ensured within a set range, and a cooling water jacket 36 and an insulating layer 35 are arranged on the outer side of the tank body 311 to insulate the tank body; wherein, a glue transmission control valve is arranged at the position of the tank cover 312 and is used for controlling the flowing direction of the glue in the liquid storage tank and the glue injection tank; preferably, the liquid level sensors are respectively arranged at the upper part, the middle part and the lower part of the glue injection cavity and are used for detecting the liquid level of the glue during glue injection; in order to prevent liquid drops when the cover is opened, a baffle plate is arranged at the bottom of the cover and used for dropping liquid drops of the mobile phone; install the air knife of dry air supply around the cover simultaneously, wet gas in the environment takes place the condensation and dilutes glue when preventing that the cover from opening in meeting cold.

Injecting glue device 3 still includes glue liquid storage tank 34 and wriggling benefit gluey pump 35, glue liquid storage tank 34 with the glue injection jar 31 sets up through glue compensation pipe 36 intercommunication, and wriggling benefit gluey pump 35 is arranged in adding glue in glue liquid storage tank 34 to glue injection jar 31, be equipped with observation window 341 and ventilation hole on the glue liquid storage tank 34, be connected with air pipe on the ventilation hole, air pipe is through a ventilation valve control, it is used for detecting to be provided with a plurality of level sensor in the glue liquid storage tank 34 the glue liquid level in the glue liquid storage tank.

Wherein, the glue liquid storage tank 34 is made of 5mm SUS316 stainless steel, the outside of which is provided with a heat insulation layer made of SUS304 stainless steel, the glue liquid storage tank carries out pressure control through a ventilation valve, in order to ensure safety, a safety relief valve is also arranged in some embodiments, the glue liquid storage tank 34 provides a refrigeration or cooling water system through an independent refrigeration system to ensure uninterrupted cooling, a liquid level sensor in the glue liquid storage tank 34 is connected with a control system to ensure that the system automatically stops glue transmission when the glue liquid level is too low; to ensure continuous production, the glue reservoir 34 is connected to a glue supply line, wherein the glue reservoir is connected to a vacuum pump 32 for degassing and defoaming the glue. A sampling valve is arranged for daily glue sample inspection, and a glue supplementing pipeline is arranged for supplementing consumed glue, so that a continuous production mode can be met.

Preferably, the first locking mechanism and the second locking mechanism are pneumatically locked, and the corresponding box body is opened or closed through the expansion of the air cylinder.

Wherein, the washing device 4 comprises a rinsing device 41 and an ultrasonic cleaning device 42.

Specifically, the rinsing device 41 includes a rinsing cylinder 411, a first electric heating mechanism 412, a first circulation mechanism 413, a surfactant dosing pump 414, an active agent storage tank 415, and a first surging platform 416, where the first electric heating mechanism 412 is configured to heat the rinsing liquid in the rinsing cylinder 411, the first circulation mechanism 413 is configured to circulate the rinsing liquid in the rinsing cylinder 411, the active agent storage tank 415 is configured to communicate with the rinsing cylinder 411 through the surfactant dosing pump 414 and is configured to quantitatively input a surfactant into the rinsing cylinder 411, and the first surging platform 416 is installed in the rinsing cylinder 411 and is configured to drive the graphite plate to surge up and down.

Wherein, in order to keep the temperature of the rinsing liquid within a certain range, the outer side wall of the rinsing cylinder 411 is wrapped with a rinsing heat-insulating layer 417; a floating ball switch is designed in the rinsing cylinder to prevent the first heating mechanism from being burnt in a water draining process, and an active agent proportioning pump and an active agent liquid storage tank can automatically and accurately proportion and add the surfactant according to the water replenishing quantity.

The ultrasonic cleaning device 42 comprises a cleaning cylinder 421, an ultrasonic oscillator 422, a second electric heating mechanism 423, a second circulating mechanism 424 and a second surge platform 425, wherein the ultrasonic oscillator 422 is used for emitting ultrasonic waves to cleaning liquid in the cleaning cylinder 421, the second electric heating mechanism 423 is used for heating the cleaning liquid, the second circulating mechanism 424 is used for enabling the cleaning liquid to flow circularly, and the second surge platform 425 is installed in the cleaning cylinder 421 and is used for driving the graphite electrode plate to surge up and down.

The cleaning solution in the cleaning cylinder is deionized water, the side wall of the cleaning cylinder is wrapped with a cleaning heat-insulating layer 426, so that the temperature of the cleaning solution is controlled within a certain range, preferably, the first circulating mechanism and the second circulating mechanism are both preferably circulating water pumps, and the front end of each circulating water pump is provided with a stainless steel filter screen for filtering impurities in large particles in the rinsing solution or the cleaning solution; the stroke end points of the first surge platform and the second surge platform are set to enable the graphite pole plates to be completely immersed into and separated from the liquid level.

Wherein, the upper peripheries of the rinsing cylinder 411 and the cleaning cylinder 421 are provided with a spraying mechanism 43 for preventing pollution caused by splashing of rinsing and cleaning foams.

Wherein, the curing device 5 comprises a water bath curing device 51 and a vacuum drying device 52.

Specifically, the water bath curing device 51 comprises a water bath 511, a pneumatic switch cylinder cover 512, a pneumatic lifting platform 513, a third electric heating mechanism 514, a temperature controller 515 and a third circulating mechanism 516, wherein the pneumatic lifting platform 513 is installed in the water bath 511 for lifting the graphite pole plate, the pneumatic switch cylinder cover 512 and the pneumatic lifting platform 513 are installed in a linkage manner, and more specifically, when the pneumatic switch cylinder cover 512 is opened, the pneumatic lifting platform 513 is lifted; when the cylinder cover 512 of the pneumatic switch is closed, the pneumatic lifting platform 513 descends; the third electric heating mechanism 514 is used for heating the solidifying liquid in the water bath 511, the temperature controller 515 is used for monitoring the temperature of the solidifying liquid in the water bath 511 in real time, and the third circulating mechanism 516 is used for circulating the solidifying liquid.

Wherein the third electric heating mechanism is an electric heating rod which is pre-installed in the bathtub, the outside of the bathtub is provided with an insulating layer to ensure the internal temperature thereof to be controlled within a certain range, and the bathtub is also internally provided with a filtering device for removing large-particle impurities in the bathtub,

Preferably, a high-temperature water tank reservoir is arranged beside the water bath solidification device, so that timely replacement and continuous operation production of the solidification liquid are guaranteed.

The vacuum drying device 52 comprises a drying cylinder 521, a heating and blowing mechanism 522 and a vacuum pump 32, wherein the drying cylinder 521 and the heating and blowing mechanism 522 form a circulating drying loop through a pipeline, and the vacuum pump 32 is used for vacuumizing the inside of the drying cylinder 521.

The vacuum drying device is used for drying the wet graphite pole plate and completely curing the glue injected into the inner pores of the graphite pole plate.

Preferably, in order to save the use of a vacuum pump and the production cost, the vacuum pump for evacuating the glue injection tank 31 and the vacuum pump for evacuating the drying cylinder 521 in the embodiment are the same vacuum extraction device, and in other embodiments, different vacuum pumps may be selected to respectively operate according to actual needs.

In order to control the humidity environment condition of the whole closed hole enhancement processing system area, the area is isolated from other environments through a barrier framework and a plastic plate in actual production, the humidity of the glue injection area is controlled below 50% after isolation, and the problem that the glue injection defect of a graphite polar plate occurs due to the fact that the humidity of the area environment is too large is avoided.

The practical use of the closed-cell reinforcement treatment system for graphite plates for fuel cells is described in detail below:

firstly, pre-formed graphite electrode plates are stacked in the hanging baskets 11 in a single-piece mode, hundreds to one thousand electrode plates can be stacked in each hanging basket 11 according to actual needs, the hanging baskets 11 are transported to the vicinity of the transfer mechanism 12, the hooks are locked on the hanging baskets 11 by using the locking pieces 122, the hanging baskets are lifted by using the lifting assembly 123, and the hanging baskets 11 are transported to the drying device 2 by using the translation assembly.

After the hanging basket 11 is placed in the drying cavity 21a of the drying box 21, the locking piece 122 is loosened, the box body cover plate 212 is closed, one hanging basket or two hanging baskets can be used for drying each time, the batch size is arranged according to the actual output requirement, the box body is sealed through the first locking mechanism 213, the gas heater and the air blower are started, the heating gas is sent into the drying cavity 21a to dry the graphite pole plate, the heating gas is always in a circulating state, and the drying process of the graphite pole plate in the box body 211 is guaranteed to be heated uniformly; meanwhile, hot water is added into the high-temperature water jacket, so that the graphite electrode plate and the interior are uniformly heated, and secondary cracking caused by nonuniform heating of the graphite electrode plate is avoided; discharging moisture on the heated graphite electrode plate through the vent, and discharging solid wastes possibly containing dust impurities in the graphite electrode plate through a discharge pipe in the drying process; the drying condition of the inner polar plate is observed at regular time through an observation port, the drying time and the drying temperature can be determined according to the number of the hanging basket polar plates, the drying time is generally selected to be 1.5-2h, and the drying temperature is about 45-50 ℃.

After drying is finished, before glue injection operation, cooling water is introduced into the cooling water jacket to ensure that the temperature of the glue injection tank is controlled within a set range; after the glue is transferred into the glue injection cavity 31a through the transfer mechanism 12, the cover 312 is closed, the tank body 311 is sealed through the second locking mechanism 314, and at the moment, the inside of the glue injection tank is in a glue-free state; connecting the glue injection tank 31 with a vacuum pump, performing vacuum extraction, controlling the vacuum degree in the glue injection tank 31 to be about 50kPa, disconnecting the vacuum pump, connecting the glue liquid storage tank 34 with the glue injection tank 31, pressing glue into the glue injection tank 31 by utilizing the negative pressure action until the height of the glue liquid level is about 10cm higher than the height of the pole plate in the hanging basket, disconnecting the pipeline of the glue liquid storage tank 34, reconnecting the vacuum pump, performing secondary vacuum extraction on the glue injection tank 31, controlling the vacuum degree to be about 200pa, starting a first negative pressure glue injection process, and recovering the atmospheric pressure after stabilizing for about 30 min; then starting an air compressor, communicating the air compressor with the glue injection tank 321, carrying out forward pressurization to about 800-900kPa, carrying out a positive pressure glue injection process, and recovering the atmospheric pressure again after maintaining stability for 2-3 h; connecting the vacuum pump again for vacuum pumping, and performing a second negative-pressure glue injection process, wherein the process and the first negative-pressure glue injection process keep the same technological parameters, and the atmospheric pressure is recovered after 10 min; the graphite pole plate finishes the three-time glue injection process, and the glue solution is filled in the inner pores of the graphite pole plate by fully utilizing the vacuum and positive pressure infiltration capillary action principle.

After the glue injection is finished, the air compressor is connected again to ensure that the internal pressure is about 60kpa, the glue in the glue injection tank 31 is pressed back to the glue storage tank 34 again by using the pressure difference, and the glue injection tank is restored to the atmospheric pressure. The hanging basket is kept to be statically dropped in the glue injection tank 31 for about 15min, the tank cover 312 is opened, air knife switches around the glue injection tank 31 are opened simultaneously, external moisture gas is prevented from being condensed and diluting glue in the tank when meeting cold, the hanging basket is quickly hung out by the transfer mechanism 12, and the glue injection tank cover 304 is closed to wait for the next glue injection task.

Wherein, glue level sensor is chain with control system, if the liquid level too low stops automatic system to start, will mend gluey peristaltic pump and open, carry out the glue through mending gluey water pipe and supply, connect the vacuum pump with glue liquid storage pot 34 simultaneously and carry out glue degasification defoaming processing. In order to ensure the glue injection quality and the stability of the glue injection process, a glue inspection material taking port is designed in the glue injection tank 31 for sampling inspection. In consideration of the deterioration and solidification of the glue at high temperature, a glue temperature sensor is arranged in the glue storage tank 34 to monitor the temperature condition of the glue in real time.

Then, the hanging basket 11 is transferred to a rinsing cylinder 411 and fixed on a hanging basket support frame of the rinsing cylinder for rinsing, the liquid level is about 10cm higher than that of the hanging basket 11, the first electric heating mechanism 412 is started to control the temperature of the rinsing cylinder 502 to be about 25 ℃, the surfactant is injected into the rinsing cylinder 411 through the surfactant metering pump 414 to be fully mixed with the rinsing liquid, meanwhile, the circulating water pump is started to ensure that the rinsing liquid fully flows, and meanwhile, impurity components in water are filtered and removed. And then the first surge platform is started to lift the hanging basket 11 up and down in a reciprocating manner to perform surging movement, the surface is rinsed by utilizing the scouring action generated by the contact of the rinsing liquid and the polar plate every time, and the spraying mechanism 43 is started to remove foams generated by the surfactant in the rinsing process. The rinsing time can be adjusted correspondingly according to the basket loading amount of the polar plate, and is generally controlled to be about 5-10 min.

Then, the plate basket is suspended into the cleaning cylinder 421, the basket is fixed on the basket support of the cleaning cylinder, the second surging platform 425 is opened to start surging cleaning, and the cleaning action is similar to the rinsing action. Meanwhile, the temperature of cleaning water is controlled through a heating device and an insulating layer 703, so that the stability of the cleaning process is ensured; through the air duct and the circulating water pump at the bottom of the cleaning cylinder, the cleaning liquid is promoted to flow in a circulating way in the water tank, and large-particle impurities are filtered. In addition, the ultrasonic oscillator 704 is started in the cleaning process, so that the cleaning speed of the surface of the graphite polar plate is accelerated, and the cleaning efficiency is improved; at the end of the lift surge cleaning cycle, the second surge platform 425 holds the basket 11 in a fully clear position and activates the spray mechanism 43 to remove foam generated by the surfactant during the cleaning process.

The water bath solidification is to solidify the injected glue in the graphite pole plate to achieve the effect of closed hole reinforcement, the cleaned pole plate is hoisted into the water bath tub, the heating rod is opened in advance, the water temperature of the water bath is controlled to be about 95 ℃, the hanging basket 11 is immersed, the pneumatic switch cylinder cover 512 is closed to prevent the wet steam from diffusing to the atmospheric environment to influence the environmental humidity condition, and the solidification time of the pole plate in the water bath tub is about 1 h.

And finally, transferring the hanging basket into a drying cylinder, starting a vacuum pump 55 for vacuumizing and drying, starting a heating and blowing mechanism 522 to ensure the flowing circulation of the gas, controlling the temperature of the drying cylinder 521 to be about 45 ℃, and maintaining for 1h-2 h.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way; the present invention can be smoothly implemented by those skilled in the art according to the drawings and the above description; however, those skilled in the art should understand that changes, modifications and variations made by the above-described technology can be made without departing from the scope of the present invention, and all such changes, modifications and variations are equivalent embodiments of the present invention; meanwhile, any changes, modifications, evolutions, etc. of the above embodiments, which are equivalent to the actual techniques of the present invention, still belong to the protection scope of the technical solution of the present invention.

Claims

1. A closed-pore strengthening treatment system for a graphite polar plate of a fuel cell is characterized by comprising a polar plate hoisting and feeding device, a drying device for heating and drying the graphite polar plate, an adhesive injection device for injecting adhesive into the graphite polar plate, a washing device and a curing device, the hoisting and feeding device comprises a hanging basket for loading the graphite pole plates and a transferring mechanism for transferring the hanging basket, the drying device comprises a drying box with a drying cavity inside and a heating mechanism for heating the drying cavity, the glue injection device comprises a glue injection tank with a glue injection cavity inside, a pressurizing mechanism for pressurizing the glue injection cavity and a pressure reducing mechanism for reducing the pressure of the glue injection cavity, the washing device is used for washing residual glue on the graphite pole plate, and the curing device is used for curing the glue in the inner hole of the graphite pole plate.

2. The closed-cell reinforcement system for graphite electrode plates of fuel cells of claim 1, wherein the transfer mechanism comprises a hook connected to the basket, a locking member for locking the hook, a lifting assembly for driving the basket to lift, and a translation assembly for driving the basket to translate.

3. The closed-cell reinforcement processing system for graphite electrode plates of fuel cells of claim 1, wherein the drying device further comprises a gas circulation mechanism, the heating mechanism is a gas heater, the gas heater is used for heating gas, and the gas circulation mechanism is communicated with the drying box and is used for introducing the heated gas into the drying box; the drying cabinet includes box, box apron and first locking structure, the box is bilayer structure, it include the heat preservation and wrap up in the outside coating of heat preservation, the box apron pass through first locking mechanism lock solid in the upper end opening part of box.

4. The closed-pore enhancement processing system for the graphite polar plate of the fuel cell as claimed in claim 1, wherein the glue injection tank comprises a tank body, a tank cover, a second locking mechanism and a plurality of liquid level sensors, the tank cover is locked at an opening at the upper end of the tank body through the second locking mechanism, and the plurality of liquid level sensors are arranged in the tank body and used for detecting the liquid level in the glue injection cavity.

5. The closed hole enhancement processing system for the graphite polar plate of the fuel cell as claimed in claim 1, wherein the glue injection device further comprises a glue storage tank, the glue storage tank and the glue injection tank are communicated with each other, an observation window and a ventilation hole are arranged on the glue storage tank, a ventilation pipeline is connected to the ventilation hole and controlled by a ventilation valve, and a plurality of liquid level sensors are arranged in the glue storage tank and used for detecting the liquid level in the glue storage tank.

6. The closed-cell enhanced treatment system for the graphite pole plate of the fuel cell as claimed in claim 1, wherein the washing device comprises a rinsing device and an ultrasonic cleaning device, the rinsing device comprises a rinsing cylinder, a first electric heating mechanism, a first circulating mechanism, a surfactant dosing pump, an active agent liquid storage tank and a first surge platform, the first electric heating mechanism is used for heating rinsing liquid in the rinsing cylinder, the first circulating mechanism is used for enabling the rinsing liquid in the rinsing cylinder to flow circularly, the active agent liquid storage tank is communicated with the rinsing cylinder through the surfactant dosing pump and used for quantitatively inputting the surfactant into the rinsing cylinder, and the first surge platform is installed in the rinsing cylinder and used for driving the graphite pole plate to surge up and down.

7. The closed-cell enhanced treatment system for the graphite electrode plate of the fuel cell as claimed in claim 6, wherein the ultrasonic cleaning device comprises a cleaning cylinder, an ultrasonic oscillator, a second electric heating mechanism, a second circulating mechanism and a second surging platform, wherein the ultrasonic oscillator is used for emitting ultrasonic waves to cleaning liquid in the cleaning cylinder, the second electric heating mechanism is used for heating the cleaning liquid, the second circulating mechanism is used for circulating the cleaning liquid, and the second surging platform is installed in the cleaning cylinder and used for driving the graphite electrode plate to surge up and down.

8. The closed-cell, enhanced treatment system for fuel cell graphite plates of claim 7, wherein the upper peripheries of said rinsing cylinder and said cleaning cylinder are fitted with spray mechanisms.

9. The closed-cell reinforcement processing system for graphite electrode plates of fuel cells of claim 1, wherein the curing device comprises a water bath curing device and a vacuum drying device, the water bath curing device comprises a water bath tub, a pneumatic switch cylinder cover, a pneumatic lifting platform, a third electric heating mechanism, a temperature controller and a third circulating mechanism, the pneumatic lifting platform is mounted in the water bath tub and used for lifting the graphite electrode plates, the pneumatic switch cylinder cover and the pneumatic lifting platform are mounted in a linkage manner, and when the pneumatic switch cylinder cover is opened, the pneumatic lifting platform is lifted; when the cylinder cover of the pneumatic switch is closed, the pneumatic lifting platform descends; the third electric heating mechanism is used for heating the curing liquid in the water bath, the temperature controller is used for monitoring the temperature of the curing liquid in the water bath in real time, and the third circulating mechanism is used for enabling the curing liquid to flow circularly.

10. The closed-cell reinforcement processing system for graphite electrode plates of fuel cells of claim 9, wherein the vacuum drying device comprises a drying cylinder, a heating blower mechanism and a vacuum pump, the drying cylinder and the heating blower mechanism forming a circulating drying loop through a pipe, the vacuum pump being used for evacuating the inside of the drying cylinder.