Solid oxide fuel cell (SOFC) tail gas recycling device

Abstract

The utility model relates to the technical field of solid oxide fuel cells, and discloses an SOFC (solid oxide fuel cell) tail gas recycling device which comprises a treatment box body, a cyclone separator is fixedly mounted in the treatment box body, a filter box is fixedly connected in the treatment box body, a fixed block is fixedly connected to the front side surface of the treatment box body, and the fixed block is fixedly connected to the rear side surface of the treatment box body. The interior of the fixing block is hollow, through openings are formed in the surfaces of the front side and the rear side of the fixing block correspondingly, a connecting block is fixedly connected to the upper surface of the fixing block, and through cooperation of a bidirectional threaded rod, a sealing ring, a first bevel gear, a second bevel gear, a first rotating shaft, a second rotating shaft, a threaded rod, a sealing block and other structures, the connecting block is fixedly connected to the upper surface of the fixing block; the situation that external dust can enter the fixing block is effectively avoided, after an external pipeline is in butt joint with the fixing block, sealing of the sealing block to the through opening is automatically canceled in the process that a gap is subjected to secondary sealing through the sealing ring, and the operation steps of workers are reduced while the sealing performance is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to solid oxide fuel cell technical field, concretely is a SOFC tail gas recycling device. BACKGROUND

[0002] Solid oxide fuel cell (SOFC) is a kind of efficient, clean power generation device, it passes through electrochemical reaction and converts the chemical energy of fuel into electric energy directly.In the SOFC operation process, a certain amount of tail gas will be produced, and the tail gas contains unreacted fuel (such as hydrogen, carbon monoxide etc.), water vapor and carbon dioxide etc.

[0003] But some SOFC tail gas treatment device of existing tail gas treatment mode is relatively simple, usually is directly discharged in atmosphere, but this kind of processing mode not only causes the waste of energy, also possibly has certain influence to environment, in actual use process, it has certain limitation, is inconvenient to recycle the tail gas of SOFC, practicality is poor, in view of this, we propose a kind of SOFC tail gas recycling device to solve the above problems. UTILITY MODEL CONTENT

[0004] In view of the deficiencies of prior art, the utility model provides a kind of SOFC tail gas recycling device to solve the problems in the background art.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of SOFC tail gas recycling device, including processing box body, the inside fixed mounting of processing box body has cyclone separator, the inside fixedly connected of processing box body has filter box, the front side surface of processing box body is fixedly connected with fixed block, the inside of fixed block is hollow, the front and rear two side surfaces of fixed block are all set with pass, the upper surface of fixed block is fixedly connected with connecting block, the front side surface of connecting block is set with guide slot, the inside rotationally connected of guide slot has bidirectional screw rod, the right end of bidirectional screw rod rotationally penetrates the inside of connecting block, the opposite screw thread of bidirectional screw rod is all screw set with L-shaped fixed rod, L-shaped fixed rod is slidably connected in the inside of guide slot, the end of two L-shaped fixed rods is all fixedly connected with sealing ring, the inside of fixed block is provided with sealing block, the inside of fixed block is provided with connecting assembly.

[0006] Preferably, the connecting assembly includes a support plate, the support plate is fixedly connected with the top wall of the inner chamber of the fixed block, a threaded rod is rotatably sleeved in the inner portion of the support plate, the sealing block is threadedly sleeved on the outer portion of the threaded rod, and a first rotating shaft is rotatably sleeved in the inner portion of the fixed block.

[0007] Preferably, the lower end of the first rotating shaft is rotatably penetrated into the interior of the fixed block, the upper end of the first rotating shaft is rotatably penetrated out of the exterior of the fixed block, and the lower end of the first rotating shaft and the right end of the threaded rod are fixedly connected with first bevel gears, and the two first bevel gears are meshedly connected.

[0008] Preferably, the upper surface of the fixed block is fixedly connected with a support block, the interior of the support block is rotatably sleeved with a second rotating shaft, and the left end of the second rotating shaft is rotatably penetrated into the interior of the guide groove.

[0009] Preferably, the outer surface of the bidirectional threaded rod, the two ends of the second rotating shaft and the upper end of the first rotating shaft are fixedly sleeved with second bevel gears, and the two second bevel gears on the two sides are respectively meshedly connected.

[0010] Preferably, the two lower side inner walls of the interior cavity of the fixed block are both provided with limiting grooves, the interiors of the two limiting grooves are both fixedly connected with limiting rods, and the sealing block is slidingly connected in the interiors of the two limiting grooves and slidingly sleeved on the exteriors of the two limiting rods.

[0011] Preferably, the interior of the filter box is provided with an activated carbon plate, the upper end of the activated carbon plate is sequentially slidingly penetrated out of the interiors of the filter box and the treatment box, the interior of the top plate of the activated carbon plate is provided with two telescopic grooves extending out of the two side surfaces, the interiors of the two telescopic grooves are both slidingly connected with trapezoidal blocks, the upper surface of the treatment box is fixedly connected with two mounting blocks, the opposite side surfaces of the two mounting blocks are both provided with mounting grooves, and the trapezoidal blocks and the mounting grooves are matched.

[0012] Preferably, the top walls of the two telescopic grooves are both provided with through grooves extending out of the upper surface of the activated carbon plate, the interiors of the through grooves are slidingly connected with driving plates, the driving plates and the trapezoidal blocks are fixedly connected, and the trapezoidal blocks and the inner walls of the telescopic grooves are fixedly connected with springs.

[0013] Compared with the prior art, the SOFC tail gas recycling device has the following beneficial effects:

[0014] 1. The SOFC tail gas recycling device cooperates the structures of the bidirectional threaded rod, the sealing ring, the first bevel gear, the second bevel gear, the first rotating shaft, the second rotating shaft, the threaded rod and the sealing block, effectively avoids the case that external dust enters the interior of the fixed block, enables the sealing block to automatically cancel the sealing of the through opening in the secondary sealing process of the gap after the external pipeline and the fixed block are butt-jointed, guarantees the sealing property, reduces the operation steps of the staff, facilitates the recycling of the SOFC tail gas, improves the overall energy utilization rate and reduces the dependence on external energy.

[0015] 2. The SOFC tail gas recycling device, through the cooperation of the trapezoidal block, the mounting block, the spring and the like, greatly facilitates the replacement of the activated carbon plate by the staff, the dismounting mode is simple, the installation efficiency is relatively high, thereby improving the practicability of the device as a whole, and ensuring the processing efficiency and processing effect of the activated carbon plate on the gas. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 Figure 1 is a structural schematic view of the SOFC tail gas recycling device of the present application;

[0017] Figure 2 Figure 4 is a structural schematic view of the fixed block of the present application;

[0018] Figure 3 Figure 5 is a sectional view of the fixed block of the present application;

[0019] Figure 4 Figure 6 is a sectional view of the activated carbon plate of the present application;

[0020] Figure 5 Figure 7 is an enlarged view of A in Figure 1. Figure 4

[0021] In the figure: 1, processing box; 2, cyclone separator; 3, filter box; 4, fixed block; 5, through port; 6, connecting block; 7, guide groove; 8, two-way threaded rod; 9, L-shaped fixed rod; 10, sealing ring; 11, sealing block; 12, support plate; 13, threaded rod; 14, first rotating shaft; 15, first bevel gear; 16, support block; 17, second rotating shaft; 18, second bevel gear; 19, activated carbon plate; 20, telescopic groove; 21, trapezoidal block; 22, mounting block; 23, mounting groove; 24, through groove; 25, driving plate; 26, spring; 27, limiting groove; 28, limiting rod. DETAILED DESCRIPTION

[0022] 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. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0023] Please refer to Figures 1-5 ​The utility model provides a technical scheme: a SOFC tail gas recycling device, including processing box body 1, the inside fixed mounting of processing box body 1 has cyclone separator 2, the inside fixed connection of processing box body 1 has filter box 3, the front side surface fixed connection of processing box body 1 has fixed block 4, the inside of fixed block 4 is hollow, and the front and rear both sides surfaces of fixed block 4 are all set up and have the mouth 5 of passing, the upper surface fixed connection of fixed block 4 has the connecting block 6, and the front side surface of connecting block 6 is set up and has guide slot 7, and the inside rotation is connected with the two-way screw rod 8 of guide slot 7, and the right end rotation of two-way screw rod 8 is threaded and is passed out the inside of connecting block 6, and the opposite screw thread of two-way screw rod 8 is threaded and is set up with L shape fixed link 9, and L shape fixed link 9 is slidably connected in the inside of guide slot 7, and the end of two L shape fixed links 9 is all fixedly connected with sealing ring 10, and the inside of fixed block 4 is provided with sealing block 11, and the inside of fixed block 4 is provided with connecting assembly.

[0024] Wherein, fixed block 4, cyclone separator 2 and filter box 3 are connected by pipeline, so as to facilitate the delivery of SOFC tail gas, and the material of the pipeline is selected from high-temperature-resistant and corrosion-resistant alloy materials to adapt to the high-temperature and high-corrosion environment of SOFC tail gas.

[0025] Wherein, the cyclone separator 2 is of the existing structure, and its main purpose is to remove impurities and harmful substances such as dust and sulfides in the tail gas, so that the tail gas passes through the cyclone separator 2 and the dust with large particles is separated out by the action of centrifugal force.

[0026] In the above embodiment, a plurality of temperature, pressure and flow sensors can be selected on the collection pipeline to monitor the temperature, pressure and flow of the tail gas in real time, providing data support for subsequent processing.

[0027] The connecting assembly includes a support plate 12, which is fixedly connected to the top wall of the inner chamber of the fixed block 4, a threaded rod 13 rotatably sleeved in the inner portion of the support plate 12, the sealing block 11 threaded on the outer portion of the threaded rod 13, and a first rotating shaft 14 rotatably sleeved in the inner portion of the fixed block 4.

[0028] The lower end of the first rotating shaft 14 rotatably penetrates into the inner portion of the fixed block 4, the upper end of the first rotating shaft 14 rotatably penetrates out of the outer portion of the fixed block 4, the lower end of the first rotating shaft 14 and the right end of the threaded rod 13 are both fixedly connected with a first bevel gear 15, and the two first bevel gears 15 are meshingly connected.

[0029] The upper surface of the fixed block 4 is fixedly connected with a support block 16, the inner portion of the support block 16 is rotatably sleeved with a second rotating shaft 17, and the left end of the second rotating shaft 17 rotatably penetrates into the inner portion of the guide slot 7.

[0030] The outer surface of the bidirectional threaded rod 8, both ends of the second rotating shaft 17 and the upper end of the first rotating shaft 14 are fixedly sleeved with second bevel gears 18, and the two second bevel gears 18 on both sides are respectively meshed and connected.

[0031] The two lower inner walls of the inner chamber of the fixed block 4 are both provided with limiting grooves 27, the interiors of the two limiting grooves 27 are both fixedly connected with limiting rods 28, and the sealing block 11 is slidingly connected in the interiors of the two limiting grooves 27 and slidingly sleeved outside the two limiting rods 28.

[0032] The inside of the filter box 3 is provided with an activated carbon plate 19, the upper end of the activated carbon plate 19 slidingly penetrates the inside of the filter box 3 and the treatment box body 1 in sequence, the inside of the top plate of the activated carbon plate 19 is provided with two extension grooves 20 extending out of the two side surfaces, the interiors of the two extension grooves 20 are both slidingly connected with trapezoidal blocks 21, the upper surface of the treatment box body 1 is fixedly connected with two mounting blocks 22, the opposite side surfaces of the two mounting blocks 22 are both provided with mounting grooves 23, and the trapezoidal blocks 21 and the mounting grooves 23 are matched.

[0033] The top walls of the two extension grooves 20 are both provided with through grooves 24 extending out of the upper surface of the activated carbon plate 19, the interiors of the through grooves 24 are slidingly connected with driving plates 25, the driving plates 25 and the trapezoidal blocks 21 are fixedly connected, and the trapezoidal blocks 21 and the inner walls of the extension grooves 20 are fixedly connected with springs 26.

[0034] Working principle:

[0035] When the SOFC tail gas recycling device is in use, the staff inserts the pipeline at the exhaust port of the SOFC battery stack into the inside of the through opening 5, so as to facilitate the subsequent collection of the tail gas generated by the SOFC, and then rotates the bidirectional threaded rod 8, at this time, the rotation of the bidirectional threaded rod 8 can drive the movement of the L-shaped fixed rod 9, and the movement of the L-shaped fixed rod 9 can drive the movement of the sealing ring 10, so as to realize the sealing of the gap between the pipeline and the through opening 5 by the sealing ring 10.

[0036] At the same time, when the bidirectional threaded rod 8 rotates, the rotation of the bidirectional threaded rod 8 can drive the rotation of the first rotating shaft 14 through the transmission of the second bevel gear 18 and the second rotating shaft 17, the rotation of the first rotating shaft 14 can realize the rotation of the threaded rod 13 through the transmission of the first bevel gear 15, and the rotation of the threaded rod 13 can drive the movement of the sealing block 11, so as to finally realize the sealing of the through opening 5 by the sealing block 11, thereby realizing the circulation of the SOFC tail gas.

[0037] The subsequent SOFC tail gas to be treated enters the interior of the cyclone separator 2, dust with larger particles in the SOFC tail gas is separated out by the action of centrifugal force, and is collected through a hopper, the tail gas treated by the cyclone separator 2 subsequently enters the interior of the filter box 3, relies on the rich microporous structure of the activated carbon plate 19 to effectively adsorb harmful gases such as sulfides in the tail gas, realizes secondary treatment of the SOFC tail gas, so as to facilitate subsequent utilization of the SOFC tail gas, so that a part of the tail gas can be directly sent back to the SOFC cell stack as fuel, providing a continuous energy supply for the cell stack, another part of the tail gas can be used for other industrial processes, such as for synthesizing chemicals, participating in metallurgical processes, etc., realizing diversified utilization of the tail gas, and further improving the comprehensive utilization rate of energy.

[0038] When the activated carbon plate 19 needs to be replaced or cleaned, the two drive plates 25 are extruded towards the middle, the movement of the drive plates 25 in turn drives the movement of the trapezoidal blocks 21, at this time the spring 26 will be deformed, the subsequent trapezoidal blocks 21 will be separated from the interior of the installation groove 23, and finally the activated carbon plate 19 is disassembled, when installing, only need to make the activated carbon plate 19 inserted into the interior of the treatment box body 1 and the filter box 3, then the inclined surface of the trapezoidal block 21 will contact with the installation block 22, after the trapezoidal block 21 moves to the outside of the installation groove 23, the spring 26 will make the trapezoidal block 21 clamped into the interior of the installation groove 23 by the elastic force of itself, and finally the activated carbon plate 19 is installed.

[0039] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and modifications can be made to these embodiments without departing from the principles and spirits of the present application, the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A SOFC exhaust gas recycling device, comprising a treatment chamber (1), characterized in that: A cyclone separator (2) is fixedly installed inside the processing box (1). A filter box (3) is fixedly connected inside the processing box (1). A fixing block (4) is fixedly connected to the front surface of the processing box (1). The interior of the fixing block (4) is hollow. Openings (5) are provided on both the front and rear surfaces of the fixing block (4). A connecting block (6) is fixedly connected to the upper surface of the fixing block (4). A guide groove (7) is provided on the front surface of the connecting block (6). The internal rotating connection is a bidirectional threaded rod (8), the right end of which rotates through the interior of the connecting block (6). The two opposite threads of the bidirectional threaded rod (8) are threaded with L-shaped fixing rods (9). The L-shaped fixing rods (9) are slidably connected inside the guide groove (7). The ends of the two L-shaped fixing rods (9) are fixedly connected with sealing rings (10). The interior of the fixing block (4) is provided with a sealing block (11). The interior of the fixing block (4) is provided with a connecting component.

2. The SOFC exhaust gas recycling device according to claim 1, characterized in that: The connecting assembly includes a support plate (12), which is fixedly connected to the top wall of the internal cavity of the fixing block (4). A threaded rod (13) is rotatably sleeved inside the support plate (12), and the sealing block (11) is threadedly sleeved outside the threaded rod (13). A first rotating shaft (14) is rotatably sleeved inside the fixing block (4).

3. The SOFC exhaust gas recycling device according to claim 2, characterized in that: The lower end of the first rotating shaft (14) rotates through into the interior of the fixed block (4), and the upper end of the first rotating shaft (14) rotates through out of the outside of the fixed block (4). The lower end of the first rotating shaft (14) and the right end of the threaded rod (13) are both fixedly connected to the first bevel gear (15), and the two first bevel gears (15) mesh with each other.

4. The SOFC exhaust gas recycling device according to claim 3, characterized in that: The upper surface of the fixed block (4) is fixedly connected to a support block (16), and the support block (16) is rotatably fitted with a second rotating shaft (17), the left end of the second rotating shaft (17) rotatably penetrating into the interior of the guide groove (7).

5. The SOFC exhaust gas recycling device according to claim 4, characterized in that: The outer surface of the bidirectional threaded rod (8), both ends of the second rotating shaft (17) and the upper end of the first rotating shaft (14) are all fixedly fitted with second bevel gears (18), and the two second bevel gears (18) on both sides are meshed and connected respectively.

6. The SOFC exhaust gas recycling device according to claim 4, characterized in that: The inner walls of the two lower sides of the inner cavity of the fixed block (4) are provided with limiting grooves (27), and the two limiting grooves (27) are fixedly connected to the inside of the two limiting rods (28). The sealing block (11) is slidably connected inside the two limiting grooves (27) and slidably sleeved on the outside of the two limiting rods (28).

7. The SOFC exhaust gas recycling device according to claim 1, characterized in that: The filter box (3) is equipped with an activated carbon plate (19). The upper end of the activated carbon plate (19) slides through the filter box (3) and the processing box (1) in sequence. The top plate of the activated carbon plate (19) has two telescopic grooves (20) extending to the two side surfaces. Trapezoidal blocks (21) are slidably connected inside the two telescopic grooves (20). Two mounting blocks (22) are fixedly connected to the upper surface of the processing box (1). Mounting grooves (23) are opened on the opposite side surface of the two mounting blocks (22). The trapezoidal blocks (21) and the mounting grooves (23) are compatible.

8. The SOFC exhaust gas recycling device according to claim 7, characterized in that: The top walls of both of the telescopic grooves (20) are provided with through grooves (24) extending out of the upper surface of the activated carbon plate (19). A drive plate (25) is slidably connected inside the through groove (24). The drive plate (25) and the trapezoidal block (21) are fixedly connected. A spring (26) is fixedly connected between the trapezoidal block (21) and the inner wall of the telescopic groove (20).

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