Container cofferdam applied to all-vanadium redox flow battery energy storage system
By designing a container cofferdam and using a structure combining polypropylene plate and a multi-layer square tube frame, the problems of electrolyte leakage and corrosion of all vanadium flow battery system are solved, and the structural strength improvement and electrolyte recovery are achieved.
Patent Information
- Application Number
- CN202421135675.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-23
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-05-23
AI Technical Summary
The container design of the existing all-vanadium flow battery system fails to effectively prevent the leakage of electrolyte, causing the electrolyte to corrode the metal box and cause environmental pollution.
A container cofferdam was designed, using a structure that combines polypropylene plates and multi-layer square tube frames. The cofferdam fence is connected by edge cofferdam columns and first square tubes. The polypropylene plate is arranged outside the cofferdam structure to prevent electrolyte. Leak and a bottom polypropylene plate is provided at the bottom to achieve the recovery of the electrolyte.
It effectively improves the structural strength of the container cofferdam, prevents the leakage of electrolyte, avoids corrosion and environmental pollution of the support column by electrolyte, and realizes the recovery of electrolyte.
Smart Images
Figure CN222457031U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of container cofferdams, and in particular to a container cofferdam applied to an all-vanadium liquid flow battery energy storage system. Background Art
[0002] The operating environment of all-vanadium liquid flow battery energy storage systems is mostly in relatively sparsely populated areas such as wind power generation, photovoltaic power generation and some thermal power plants, so there are higher requirements for the outer shell container system that provides external protection.
[0003] In the past, the design of the container bottom plate of the all-vanadium liquid flow battery system was relatively simple, partially closed or only using simple alloy steel plates to seal the battery system. Although this treatment method can play a certain protective role, it does not take into account the electrolyte leakage caused by emergencies encountered during the operation of the all-vanadium liquid flow battery. In addition, since the container body and the bottom of the container are mainly composed of alloy materials, and the electrolyte is highly corrosive to metals, if the electrolyte leaks out of the external natural environment through the container body, it will cause great environmental damage and safety hazards. In view of this situation, it is considered to design a container cofferdam for the all-vanadium liquid flow battery energy storage system. Utility Model Content
[0004] In order to solve the above problems, the utility model provides a container cofferdam applied to an all-vanadium liquid flow battery energy storage system.
[0005] In the first aspect, the present application provides a container cofferdam applied to an all-vanadium liquid flow battery energy storage system, which adopts the following technical solution:
[0006] A container cofferdam for an all-vanadium liquid flow battery energy storage system, comprising a cofferdam fence and a polypropylene plate.
[0007] The cofferdam fence comprises a plurality of edge cofferdam columns and a plurality of first square tubes, the first square tubes are arranged on the inner side and the outer side of the edge cofferdam columns, and the edge cofferdam columns are connected by the first square tubes;
[0008] The polypropylene plate includes a first edge polypropylene plate, a second edge polypropylene plate and a bottom polypropylene plate. The first edge polypropylene plate is arranged on the inner side of the edge cofferdam column through a first square tube located on the inner side of the edge cofferdam column. The second edge polypropylene plate is arranged on the first square tube on the outer side of the edge cofferdam column. The second edge polypropylene plate is welded to the first edge polypropylene plate. The bottom polypropylene plate is located in the cofferdam fence and is welded to the first edge polypropylene plate.
[0009] Furthermore, it also includes a central cofferdam column, a multi-layer square tube frame, a first central polypropylene plate and a second central polypropylene plate, the central cofferdam column is located inside the cofferdam fence, the multi-layer square tube frame is sleeved outside the central cofferdam column, the first central polypropylene plate is arranged on four sides of the central cofferdam column through the multi-layer square tube frame, the second central polypropylene plate is arranged on the multi-layer square tube frame, the second central polypropylene plate is welded to the top of the first central polypropylene plate, and the bottom of the first central polypropylene plate is welded to the bottom polypropylene plate.
[0010] Furthermore, the square tube frame is arranged in three layers, each layer of the square tube frame comprises four second square tubes connected end to end in sequence, the distance between the square tube frames in each layer is the same, the square tube frames are welded to each other, and the second square tubes are welded to the middle cofferdam columns.
[0011] Furthermore, the edge cofferdam columns and the middle cofferdam columns are connected to the transport vehicle via fasteners.
[0012] Furthermore, three first square tubes are vertically arranged at equal intervals on the inner side of the edge cofferdam column.
[0013] Furthermore, the height between the second edge polypropylene plate and the bottom edge polypropylene plate is 0.2-0.71 meters.
[0014] In summary, the utility model includes the following beneficial technical effects:
[0015] 1. The connection between the first square tube and the edge cofferdam column effectively improves the structural strength of the container cofferdam, and the anti-corrosion polypropylene plate arranged on the outside of the fence structure can prevent the leaked electrolyte from flowing out of the container, thereby improving the structural strength of the container cofferdam and avoiding the corrosion of the supporting column and the pollution of the environment caused by the leakage of the electrolyte.
[0016] 2. The bottom polypropylene plate is set at the bottom of the container cofferdam to also realize the recovery of electrolyte. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 A side view of an edge cofferdam column connected to a first square tube provided by the utility model.
[0018] Figure 2 A front view of an edge cofferdam column connected to a first square tube provided by the utility model.
[0019] Figure 3 A schematic diagram of the connection between a cofferdam fence and a polypropylene board provided by the utility model.
[0020] Figure 4The utility model is a schematic diagram of a middle cofferdam column provided by the utility model.
[0021] Figure 5 A bottom schematic diagram of a cofferdam fence provided by the utility model.
[0022] Figure 6 The utility model is a bottom schematic diagram of a container cofferdam provided by the utility model.
[0023] The following are the descriptions of the reference numerals:
[0024] 1-cofferdam fence, 101-edge cofferdam column, 102-middle cofferdam column, 2-polypropylene plate, 201-first edge polypropylene plate, 202-second edge polypropylene plate, 203-bottom polypropylene plate, 204-first middle polypropylene plate, 205-second middle polypropylene plate, 3-first square tube, 4-multi-layer square tube frame, 401-second square tube, 5-fasteners. DETAILED DESCRIPTION
[0025] The following is combined with Figure 1 To Attachment Figure 6 This application is described in further detail.
[0026] After reading this specification, those skilled in the art may make non-creative modifications to this embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of this application.
[0027] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.
[0028] In addition, in the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are 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 cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.
[0029] The corrosion of all-vanadium liquid flow batteries has been studied. It is found that the corrosion mainly comes from the electrolyte, and the electrolyte is mainly composed of a mixture of vanadium ions, hydrogen ions and sulfate ions in different valence states. In view of its chemical properties, a polypropylene plate 2 that is not easily corroded by the electrolyte is used to surround and protect the supporting column. At the same time, the corrosive damage to the metal box when the electrolyte leaks is taken into consideration. In order to prevent it from further leaking out of the natural environment through the box, the utility model provides a container cofferdam of an all-vanadium liquid flow battery energy storage system, which can prevent the electrolyte from penetrating into the external environment through the four sides of the box. The cofferdam system together with the bottom plate can concentrate all the electrolyte inside the container when the electrolyte leaks, thereby avoiding damage to the environment caused by electrolyte leakage.
[0030] Example 1: Figure 1-Figure 6 As shown, the utility model is a container cofferdam used in an all-vanadium liquid flow battery energy storage system, comprising a cofferdam fence 1 and a polypropylene plate 2. The cofferdam fence 1 comprises a plurality of edge cofferdam columns 101 and a plurality of first square tubes 3. The edge cofferdam columns 101 are connected to the first square tubes 3 by welding. Welding can prevent the first square tubes 3 from falling off during long-term use. In the embodiment of the present application, the first square tubes 3 and the edge cofferdam columns 101 are made of steel, which can play a rigid supporting role to prevent the polypropylene plate 2 from deforming. Three first square tubes 3 are vertically welded at equal intervals on the inner side of the edge cofferdam columns 101. The three first square tubes 3 are evenly arranged on the inner side of the edge cofferdam columns 101 to ensure that they can evenly play a supporting role. A first square tube 3 is welded on the outer side of the edge cofferdam columns 101. The edge cofferdam columns 101 and the edge cofferdam columns 101 are connected by the first square tubes 3, as shown in FIG. Figure 1As shown in FIG. 1 , it is a side view of the connection between an edge cofferdam column 101 and a first square tube 3 provided in an embodiment of the present application. Figure 2 As shown, it is a front view of an edge cofferdam column 101 connected to a first square tube 3. In the embodiment of the present application, the width of the three first square tubes 3 connected to the inner side of the edge cofferdam column 101 is 0.12 meters, and the height is 0.06 meters; the width of a first square tube 3 connected to the outer side of the edge cofferdam column 101 is 0.08 meters, and the height is 0.04 meters. It can be understood that compared with the round tube, the first square tube 3 has a larger contact area with the polypropylene plate 2 and a larger bearing area, which can avoid the pressure of the leaked electrolyte on the polypropylene plate 2 causing the polypropylene plate 2 to deform, so the first square tube 3 is selected as the support of the polypropylene plate 2. Furthermore, all the cofferdam fences 1 can form a container cofferdam frame after being connected.
[0031] The polypropylene plate 2 includes a first edge polypropylene plate 201, a second edge polypropylene plate 202 and a plurality of bottom polypropylene plates 203. The first edge polypropylene plate 201 is arranged on the inner side of the edge cofferdam column 101 through three first square tubes 3 located on the inner side of the edge cofferdam column 101. The second edge polypropylene plate 202 is arranged on the first square tube 3 outside the edge cofferdam column 101. The second edge polypropylene plate 202 is connected to the first edge polypropylene plate 201 by welding. The bottom polypropylene plate 203 is located in the cofferdam fence 1 and is connected to the bottom of the first edge polypropylene plate 201 by welding. Figure 3 As shown, it is a schematic diagram of the connection between a cofferdam fence 1 and a polypropylene plate 2 provided in an embodiment of the present application. In the embodiment of the present application, in combination with the size of the actual transport vehicle, a bottom polypropylene plate 203 with a width of 2 meters, a length of 9 meters, and a thickness of 0.01 meters is selected. By selecting the bottom polypropylene plate 203 of a suitable size, it is possible to avoid being too large to be transported, thereby improving the convenience of transportation. Furthermore, in the embodiment of the present application, the height of the cofferdam fence 1 (i.e., the second edge polypropylene plate 202 and the bottom polypropylene plate 203) is 0.71 meters. It can be understood that when the liquid storage tank of a single all-vanadium liquid flow battery is completely leaked, the volume of the electrolyte is 31.25m 3 , bottom area of cofferdam fence 1 = 18m*9m = 162m 2 Setting a height of 0.71 meters can not only prevent the electrolyte from leaking out, but also act as a rat barrier to prevent the container from being bitten by rodents.
[0032] The utility model also includes a middle cofferdam column 102, a multi-layer square tube frame 4, a plurality of first middle polypropylene plates 204 and a plurality of second middle polypropylene plates 205, the middle cofferdam column 102 is located in the cofferdam fence 1, the middle cofferdam column 102 is located in the multi-layer square tube frame 4, the middle cofferdam column 102 is connected to the multi-layer square tube frame 4 by welding, wherein the square tube frame has 3 layers, the distance between each layer of square tube frames is the same, each layer of square tube frames includes four second square tubes 401 connected end to end in sequence, the second square tubes 401 are connected to each other by welding, and the second square tube welds 401 are welded to the middle cofferdam column 102. Four first middle polypropylene plates 204 and four second middle polypropylene plates 205 are also provided. The four first middle polypropylene plates 204 are all provided on the four sides of the multi-layer square tube frame 4. The second middle polypropylene plates 205 are all provided on the multi-layer square tube frame 4. The second middle polypropylene plates 205 are welded to the top of the first middle polypropylene plates 204. The bottom of the first middle polypropylene plates 204 are all connected to the bottom polypropylene plates 203 by welding. Figure 4 , which is a schematic diagram of a middle cofferdam column 102 provided in an embodiment of the present application.
[0033] The edge cofferdam columns 101 and the middle cofferdam columns 102 are connected to the transport vehicle via fasteners 5. Figure 5 As shown, it is a bottom schematic diagram of the cofferdam fence 1, and the square frame is the fastener 5.
[0034] The bottom of the container cofferdam is composed of nine bottom polypropylene plates 203, and the bottom polypropylene plates 203 are connected by fusion welding. The bottom of the container cofferdam is tilted so that the electrolyte can be concentrated at the lower end of the bottom of the container cofferdam after leakage, which is convenient for recovering the electrolyte; Figure 6 The figure shows a bottom schematic diagram of a container cofferdam provided by an embodiment of the present application. Furthermore, the connection between the first edge polypropylene plate 201 and the second edge polypropylene plate 202, the connection between the first edge polypropylene plate 201 and the bottom polypropylene plate 203, the connection between the first middle polypropylene plate 204 and the second middle polypropylene plate 205, the connection between the first middle polypropylene plate 204 and the first middle polypropylene plate 204, the connection between the second middle polypropylene plate 205 and the second middle polypropylene plate 205, and the connection between the first middle polypropylene plate 204 and the bottom polypropylene plate 203 are all provided with silicone sealing strips (not shown in the drawings), and the provision of silicone sealing strips can prevent the electrolyte from leaking out from the connection.
[0035] The beneficial effects of the utility model are as follows: the connection between the first square tube 3 and the edge cofferdam column 101 effectively improves the structural strength of the container cofferdam, and the polypropylene plate 2 with corrosion resistance is arranged on the outside of the fence structure to prevent the leaked electrolyte from flowing out of the container, thereby improving the structural strength of the container cofferdam and avoiding the corrosion of the supporting column and the pollution of the environment caused by the leakage of the electrolyte.
[0036] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A container cofferdam applied to an all-vanadium liquid flow battery energy storage system, characterized in that: Includes cofferdam fence and polypropylene panels, The cofferdam fence comprises a plurality of edge cofferdam columns and a plurality of first square tubes, the first square tubes are arranged on the inner side and the outer side of the edge cofferdam columns, and the edge cofferdam columns are connected by the first square tubes; The polypropylene plate includes a first edge polypropylene plate, a second edge polypropylene plate and a bottom polypropylene plate. The first edge polypropylene plate is arranged on the inner side of the edge cofferdam column through a first square tube located on the inner side of the edge cofferdam column. The second edge polypropylene plate is arranged on the first square tube on the outer side of the edge cofferdam column. The second edge polypropylene plate is welded to the first edge polypropylene plate. The bottom polypropylene plate is located in the cofferdam fence and is welded to the first edge polypropylene plate.
2. The container cofferdam used in the all-vanadium liquid flow battery energy storage system according to claim 1 is characterized in that: It also includes a central cofferdam column, a multi-layer square tube frame, a first central polypropylene plate and a second central polypropylene plate. The central cofferdam column is located inside the cofferdam fence, the multi-layer square tube frame is sleeved outside the central cofferdam column, the first central polypropylene plate is arranged on the four sides of the central cofferdam column through the multi-layer square tube frame, the second central polypropylene plate is arranged on the multi-layer square tube frame, the second central polypropylene plate is welded to the top of the first central polypropylene plate, and the bottom of the first central polypropylene plate is welded to the bottom polypropylene plate.
3. The container cofferdam applied to the all-vanadium liquid flow battery energy storage system according to claim 2 is characterized in that: The square tube frame is arranged in three layers, each layer of the square tube frame comprises four second square tubes connected end to end in sequence, the distance between the square tube frames in each layer is the same, and the square tube frame is welded to the middle cofferdam column.
4. The container cofferdam applied to the all-vanadium liquid flow battery energy storage system according to claim 2 is characterized in that: The edge cofferdam columns and the middle cofferdam columns are both connected to the transport vehicle via fasteners.
5. The container cofferdam used in the all-vanadium liquid flow battery energy storage system according to claim 1, characterized in that: Three first square tubes are vertically arranged at equal intervals on the inner side of the edge cofferdam column.
6. The container cofferdam used in the all-vanadium liquid flow battery energy storage system according to claim 1, characterized in that: The height of the second edge polypropylene plate from the bottom edge polypropylene plate is 0.2-0.71 meters.