CN107403937B - Electrolyte suction device and electrolyte storage tank comprising same - Google Patents
Electrolyte suction device and electrolyte storage tank comprising same Download PDFInfo
- Publication number
- CN107403937B CN107403937B CN201710714231.2A CN201710714231A CN107403937B CN 107403937 B CN107403937 B CN 107403937B CN 201710714231 A CN201710714231 A CN 201710714231A CN 107403937 B CN107403937 B CN 107403937B
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- Prior art keywords
- electrolyte
- pipe
- storage tank
- suction device
- tank
- Prior art date
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- 239000003792 electrolyte Substances 0.000 title claims abstract description 105
- 230000005484 gravity Effects 0.000 abstract description 6
- 239000012530 fluid Substances 0.000 abstract description 3
- 238000004146 energy storage Methods 0.000 description 8
- 229910052720 vanadium Inorganic materials 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 4
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 4
- 239000013543 active substance Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910001456 vanadium ion Inorganic materials 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 238000003411 electrode reaction Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04276—Arrangements for managing the electrolyte stream, e.g. heat exchange
- H01M8/04283—Supply means of electrolyte to or in matrix-fuel cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04186—Arrangements for control of reactant parameters, e.g. pressure or concentration of liquid-charged or electrolyte-charged reactants
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/18—Regenerative fuel cells, e.g. redox flow batteries or secondary fuel cells
- H01M8/184—Regeneration by electrochemical means
- H01M8/188—Regeneration by electrochemical means by recharging of redox couples containing fluids; Redox flow type batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Hybrid Cells (AREA)
- Fuel Cell (AREA)
Abstract
The invention discloses an electrolyte suction device and an electrolyte storage tank comprising the same. The electrolyte suction device includes: a header pipe; a plurality of branch pipes which are vertically connected with the main pipe and communicated with the main pipe, the surfaces of the plurality of branch pipes opposite to the main pipe are provided with a plurality of suction holes. The electrolyte suction device can suck the electrolyte at the bottom of the storage tank through the plurality of suction holes in the branched pipe, the electrolyte at the upper layer moves to the bottom layer of the storage tank under the action of gravity, the mobility of the electrolyte in the storage tank in the gravity direction is improved, meanwhile, the electrolyte enters the branched pipe through the plurality of suction holes, certain fluid disturbance is formed at the periphery of the suction holes, and the mobility of the electrolyte in the storage tank in the horizontal direction is enhanced. The electrolyte storage tank adopts the electrolyte suction device, and the fluidity of the electrolyte in the electrolyte storage tank is enhanced.
Description
Technical Field
The invention relates to an electrolyte suction device and an electrolyte storage tank comprising the same.
Background
The all-vanadium redox flow battery is a novel green energy storage battery with younger technology, and the redox reaction of vanadium ion pairs with different valence states is utilized to realize the mutual conversion of electric energy and chemical energy, so that the all-vanadium redox flow battery is particularly suitable for occasions with large-capacity energy storage. The vanadium battery energy storage system mainly comprises a pile system, a power supply load system and an electrolyte conveying system. Vanadium ions with different valence states in electrolyte are used as positive and negative active substances, the positive and negative active substances are respectively arranged in 2 electrolyte storage tanks, and are respectively sent into positive and negative reaction areas of a pile through an external conveying pump, and after electrochemical reaction occurs in the pile, the positive and negative active substances flow back to the corresponding storage tanks. The cycle is continuously performed to complete the conversion of electric energy and chemical energy. The power of the vanadium battery energy storage system depends on the number of single cells and the electrode reaction area, and the capacity depends on the volume and concentration of electrolyte, so the power and the capacity of the system can be designed separately and independently, the system has great flexibility, and the system power can be changed by adjusting the number of series (parallel) connected stacks or the system capacity can be adjusted by changing the storage amount of the electrolyte so as to meet different requirements.
The scale of the vanadium battery energy storage system can be characterized by two parameters, namely power (kW) and capacity (kWh), and the ratio of the capacity to the power is the energy storage (release) time (h) under the design working condition of the system. For applications requiring long-time energy storage, a large amount of electrolyte is needed to store electric energy, and the volume of the electrolyte storage tank is large at this time, but in the prior art, a main pipe of an external pump is generally directly inserted into an area, close to the bottom surface, inside the liquid storage tank to serve as an electrolyte suction inlet.
The main pipe of a single external pump is inserted into the electrolyte storage tank to serve as an electrolyte suction inlet, when the volume of the storage tank exceeds a certain volume, the full circulation of the electrolyte in the tank cannot be ensured, even a flowing dead zone exists, and the following two adverse effects are caused at the moment, so that the economy and the reliability of the system are affected.
Firstly, when the system is in operation, electrolyte in the flowing dead zone in the tank circulates in the storage tank and is not timely conveyed to the galvanic pile to participate in the reaction, namely the electrolyte in the flowing dead zone is not (fully) utilized, so that the utilization rate of the electrolyte is reduced;
secondly, the electrolyte in the storage tank has poor fluidity and uneven mixing, and the detection point of the state of charge (SOC) of the electrolyte is not representative, so that the accurate judgment of the charging (discharging) degree of the system is affected.
Disclosure of Invention
The invention aims to overcome the defect that an electrolyte flowing dead zone exists in a storage tank in the prior art, and provides an electrolyte suction device capable of effectively improving the fluidity of electrolyte and improving the utilization rate of the electrolyte and the electrolyte storage tank comprising the same.
The invention is realized by the following technology the technical problems are solved by the scheme:
an electrolyte inhalation device, comprising:
a header pipe;
the multiple branch pipes are vertically connected to the main pipe and communicated with the main pipe, and the surfaces of the multiple branch pipes, which are opposite to the main pipe, are provided with multiple suction holes.
Preferably, the electrolyte suction device further includes a connection pipe vertically connected to and communicating with the manifold, and the plurality of branch pipes are connected to and communicate with the connection pipe.
Preferably, a plurality of branch pipes are provided at both sides of the connection pipe.
Preferably, one end of the branch pipe is connected to the connecting pipe, and the other end of the branch pipe is closed.
Preferably, a surface of the connection pipe opposite to the manifold is provided with a plurality of suction holes.
Preferably, the manifold is connected to the center of the connecting tube, and both ends of the connecting tube are closed.
Preferably, the branch pipe is welded to the connecting pipe, and the connecting pipe is welded to the main pipe.
The electrolyte storage tank comprises a tank body, an external pump main pipe and the electrolyte suction device, wherein the electrolyte suction device is arranged in the tank body, and the main pipe is communicated with the external pump main pipe.
Preferably, the electrolyte sucking means is spaced 100-200 mm from the inner bottom surface of the can body and 100 mm from the inner side surface of the can body.
Preferably, the planar shape formed by the branched pipe is adapted to the cross-sectional shape of the tank.
Preferably, a bracket is further arranged in the electrolyte storage tank, and the bracket is arranged on the inner bottom surface of the electrolyte storage tank and is supported by the electrolyte suction device.
The invention has the positive progress effects that: the electrolyte suction device can suck the electrolyte at the bottom of the storage tank through the plurality of suction holes in the branched pipe, the electrolyte at the upper layer moves to the bottom layer of the storage tank under the action of gravity, the mobility of the electrolyte in the storage tank in the gravity direction is improved, meanwhile, the electrolyte enters the branched pipe through the plurality of suction holes, certain fluid disturbance is formed at the periphery of the suction holes, and the mobility of the electrolyte in the storage tank in the horizontal direction is enhanced. The electrolyte storage tank adopts the electrolyte suction device, and the fluidity of the electrolyte in the electrolyte storage tank is enhanced.
Drawings
Fig. 1 is a schematic perspective view of a preferred embodiment according to the present invention.
Reference numerals illustrate:
10. electrolyte suction device
20. Manifold pipe
30. Connecting pipe
40. Separate pipe
41. Suction hole
Detailed Description
The invention will be further illustrated by way of example with reference to the accompanying drawings, without thereby limiting the scope of the invention to the examples described.
As shown in fig. 1, the electrolyte suction device 10 includes: a main pipe 20, a connecting pipe 30 and a plurality of branch pipes 40.
The manifold 20 is adapted to be connected to an external pump main of an electrolyte tank, which will be described below.
The connection pipe 30 is vertically connected to the manifold 20 and communicates with the manifold 20, and the plurality of branch pipes 40 are connected to the connection pipe 30 and communicate with the connection pipe 30 and are arranged on a plane perpendicular to the manifold 20.
Alternatively, the connection pipe 30 may not be provided, and the plurality of branch pipes 40 may be directly and vertically connected to the manifold 20 and communicate with the manifold 20.
A plurality of branch pipes 40 are arranged and both sides of the connection pipe 30. One end of the branch pipe 40 is connected to the connection pipe 30, and the other end of the branch pipe 40 is closed.
The manifold 20 is connected to the center of the connection pipe 30, and both ends of the connection pipe 30 are closed.
In the present embodiment, the surfaces of the plurality of branch pipes 40 opposite to the manifold 20 are provided with a plurality of suction holes 41, and the surfaces of the connecting pipes 30 opposite to the manifold 20 are also provided with a plurality of suction holes 41. Electrolyte may enter from these suction holes 41.
Alternatively, the suction hole 41 may not be provided in the connection pipe 30.
The connecting tube 30 has a diameter larger than that of the branch tubes 40 so as to fix the plurality of branch tubes 40. Both ends of the connection pipe 30 are closed so that the electrolyte is not preferentially sucked from both ends of the connection pipe 30 when sucked, resulting in insufficient fluidity of the electrolyte caused by the fact that the electrolyte under the branch pipe 40 is not sucked.
The electrolyte suction device 10 is preferably made of pp material. Of course, other suitable materials may be selected as desired.
The branch pipe 40 is welded to the connection pipe 30, the connection pipe 30 is welded to the manifold 20. The reliability of connection can be ensured by directly adopting welding connection for each pipeline.
Alternatively, the branch pipe 40, the connecting pipe 30 and the main pipe 20 may be connected by screw connection or clamping connection, etc. as required.
The electrolyte suction device 10 is applied to an electrolyte tank. The electrolyte tank generally comprises a tank body, an external pump main pipe and an electrolyte suction device 10. The electrolyte suction device 10 is arranged in the tank body, and the main pipe 20 is communicated with an external pump main pipe. The external pump main pipe is connected with an external pump, and the external pump pumps electrolyte from the electrolyte storage tank.
The electrolyte suction device 10 is preferably 100-200 mm from the inner bottom surface of the can body and is preferably about 100 mm from the inner side surface of the can body.
The planar shape formed by the branched pipe 40 is adapted to the cross-sectional shape of the tank. As shown in fig. 1, the branched pipe 40 is formed in a circular planar shape, which is adapted to a tank having a circular cross-sectional shape, to ensure that the electrolyte of substantially the entire bottom surface area of the tank can be sucked without touching the side wall of the tank. When the cross-sectional shape of the tank is square or other shape, the length of the branch pipe 40 can be adjusted so that the suction hole coverage area of the branch pipe is matched with the cross-sectional shape of the tank, so that the suction hole 41 on the branch pipe 40 can suck the electrolyte in the substantially whole bottom surface area of the tank.
Alternatively, a bracket may be provided on the inner bottom surface of the tank to support the electrolyte suction device 10.
The respective dimensions of the manifold 20, the connecting tube 30 and the branch tube 40 may be set according to the selected electrolyte tank. Taking a 200kW/400kWh vanadium battery energy storage system as an example, the electrolyte storage tank is a vertical cylindrical PP storage tank, the inner diameter of the storage tank is 2m, and the height is 4.5m. The suction device is made of PP, and all parts of the device are connected through welding. The nominal outer diameter of the main pipe 20 is 90mm, the mounting height is 540mm, the nominal outer diameter of the connecting pipe 30 is 160mm, the length is 1.8m, and the two sides of the connecting pipe 30 are symmetrically distributed with the branch pipes 40, and 18 branch pipes 40 are totally arranged. The nominal outer diameter of the branch pipe 40 is 63mm, and the lengths of one side are respectively as follows: 330mm, 590mm, 730mm, 800mm, 820mm, 800mm, 730mm, 590mm, 330mm, to form a circular planar shape. The diameter of the suction hole 41 is 6mm, and the number of holes is 266 in total. Tests prove that the system runs for a long time and the electrolyte has good fluidity.
The electrolyte suction device 10 can suck the electrolyte at the bottom of the storage tank through the plurality of suction holes 41 on the branch pipe 40, the electrolyte at the upper layer moves to the bottom layer of the storage tank under the action of gravity, the mobility of the electrolyte in the storage tank in the gravity direction is improved, meanwhile, in the process that the electrolyte enters the branch pipe 40 through the plurality of suction holes 41, certain fluid disturbance is formed at the periphery of the suction holes 41, and the mobility of the electrolyte in the storage tank in the horizontal direction is enhanced. The electrolyte tank employs the electrolyte suction device 10, and the fluidity of the electrolyte therein is enhanced.
In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the principles and spirit of the invention, but such changes and modifications fall within the scope of the invention.
Claims (9)
1. An electrolyte inhalation device, characterized in that it comprises:
the connecting pipes are vertically connected with the main pipe; the branch pipes are arranged on two sides of the connecting pipe; the plane where the connecting pipe and the main pipe are positioned is intersected with the plane formed by the connecting pipe and any branch pipe;
a plurality of branch pipes are vertically connected with the main pipe and are communicated with the main pipe;
the surface of the branch pipe opposite to the main pipe is provided with a plurality of suction holes.
2. The electrolyte suction device as claimed in claim 1, wherein one end of the sub-tube is connected to the connection tube, and the other end of the sub-tube is closed.
3. The electrolyte suction device as claimed in claim 1, wherein a surface of the connection pipe opposite to the manifold is provided with a plurality of suction holes.
4. The electrolyte suction device as claimed in claim 1, wherein the manifold is connected to a center of the connection pipe, and both ends of the connection pipe are closed.
5. The electrolyte suction device of claim 1 wherein the branch pipe is welded to the connection pipe and the connection pipe is welded to the manifold.
6. An electrolyte storage tank, which is characterized by comprising a tank body, an external pump main pipe and the electrolyte suction device as claimed in any one of claims 1-5, wherein the electrolyte suction device is arranged in the tank body, and the main pipe is communicated with the external pump main pipe.
7. The electrolyte tank of claim 6, wherein said electrolyte suction means is 100-200 mm from an inner bottom surface of said tank body and 100 mm from an inner side surface of said tank body.
8. The electrolyte tank of claim 6, wherein the planar shape formed by the branched tubes is adapted to the cross-sectional shape of the tank.
9. The electrolyte tank of claim 6, wherein a bracket is further provided inside the electrolyte tank, and the bracket is provided on an inner bottom surface of the electrolyte tank and supported by the electrolyte suction device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710714231.2A CN107403937B (en) | 2017-08-18 | 2017-08-18 | Electrolyte suction device and electrolyte storage tank comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710714231.2A CN107403937B (en) | 2017-08-18 | 2017-08-18 | Electrolyte suction device and electrolyte storage tank comprising same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107403937A CN107403937A (en) | 2017-11-28 |
| CN107403937B true CN107403937B (en) | 2024-02-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710714231.2A Active CN107403937B (en) | 2017-08-18 | 2017-08-18 | Electrolyte suction device and electrolyte storage tank comprising same |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111668518A (en) * | 2020-06-09 | 2020-09-15 | 上海电气集团股份有限公司 | Homogeneous phase distributor, electrolyte storage tank and all-vanadium redox flow battery energy storage system |
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| CN107403937A (en) | 2017-11-28 |
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Inventor after: Yang Linlin Inventor after: Lin Youbin Inventor after: Zhou Yu Inventor after: Wang Baoguo Inventor after: Wang Shaopeng Inventor after: Liao Wenjun Inventor before: Yang Linlin |
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Effective date of registration: 20231208 Address after: No. 8 Qianchuan Road, Chaohu Economic Development Zone, Hefei City, Anhui Province, 238014 Applicant after: Shanghai Electric (Anhui) energy storage technology Co.,Ltd. Address before: 30th Floor, No. 8 Xingyi Road, Changning District, Shanghai, 2003 Applicant before: Shanghai Electric Group Co.,Ltd. |
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