Composite tank for flow battery

Abstract

The utility model provides a composite tank for a flow battery, and relates to the technical field of flow batteries, a tank body comprises an inner container layer and a shell layer, the inner container layer is in contact with electrolyte and adopts a plastic cloth-coated plate, the shell layer adopts an FRP (Fiber Reinforced Plastic) composite material, and a resin connecting layer bonded with the inner container layer and the shell layer is arranged between the inner container layer and the shell layer. And a resin protective layer is arranged on the outer surface of the shell layer.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid flow batteries, in particular to a composite tank for liquid flow batteries. Background Art

[0002] In the development of the new energy industry, energy storage equipment products play an important role, and their stability and safety have attracted much attention. At present, the tanks for storing electrolytes are generally made of plastic, which has the defects of low support strength and low safety. Utility Model Content

[0003] The utility model aims to provide a composite tank for a liquid flow battery, so as to solve the problems of poor supporting strength and low safety performance of the current electrolyte storage tank.

[0004] In order to solve the above problems, the utility model first provides a composite tank for a liquid flow battery. The tank body includes an inner liner layer and an outer shell layer. The inner liner layer is in contact with the electrolyte and adopts a plastic cloth covering plate. The outer shell layer adopts an FRP composite material. A resin connecting layer bonded to the inner liner layer and the outer shell layer is provided between the inner liner layer and the outer shell layer, and a resin protective layer is provided on the outer surface of the outer shell layer.

[0005] In this way, the tank body is designed with inner and outer layers. The inner liner layer in contact with the electrolyte is made of plastic cloth-covered board material, which has good insulation and corrosion resistance. The outer shell layer is FRP composite material with high mechanical strength. The two are bonded to each other through a resin connecting layer to ensure the adhesion between the two. The tank body combines the advantages of PP and FRP materials, and has both safety and supporting strength, which effectively solves the defects of existing liquid storage tanks. A resin protective layer is provided on the outer surface of the outer shell layer, which further enhances the protective performance of the outer shell layer, prevents the outer shell layer from aging, and increases its service life.

[0006] Furthermore, a plurality of inner support rings are evenly arranged from top to bottom inside the side wall of the inner liner layer.

[0007] Furthermore, a ladder fence is connected to the outer side of the outer shell layer, and a tank top platform is connected to the top of the ladder fence, and the tank top platform is located above the tank body.

[0008] Furthermore, the upper and lower ends of the tank body are respectively provided with an electrolyte inlet and an electrolyte outlet, the top of the tank body is provided with a top wall inlet, a nitrogen inlet, an exhaust port, a breathing valve port, a pressure gauge port and a spare port, the lower part of the tank body is provided with a side wall inlet, a balance port and a thermometer port, and the side wall of the tank body is provided with a liquid level gauge port.

[0009] Furthermore, a ground anchor is provided at the bottom of the tank body, which can be fixedly connected to the installation ground, and the ground anchor is made of insulating material.

[0010] Furthermore, the bottom of the tank body is provided with reinforcing ribs.

[0011] Furthermore, a plurality of groups of heat-insulating nails are evenly distributed along the axial direction on the side wall of the tank body.

[0012] Furthermore, a lifting lug is provided on the outside of the tank body, and the lifting lug can be connected to a lifting device.

[0013] Furthermore, the tank body is configured to operate at a voltage of 1000V without insulation breakdown, damage and leakage, and the insulation value of the 1000V insulation resistance meter measurement system is greater than 10MΩ. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0015] Figure 1 A schematic diagram of the structure of a composite tank for a flow battery provided in an embodiment of the utility model;

[0016] Figure 2 A cross-sectional view of a composite tank for a liquid flow battery provided in an embodiment of the utility model.

[0017] Description of reference numerals:

[0018] 100-tank body; 101-electrolyte inlet; 102-electrolyte outlet; 103-top wall inlet; 104-nitrogen inlet; 105-exhaust port; 106-breathing valve port; 107-pressure gauge port; 108-spare port; 110-ladder fence; 120-tank top platform; 130-inner support ring; 141-side wall inlet; 142-balance port; 143-thermometer port; 144-liquid level gauge port; 150-insulation nails; 160-reinforcement ribs; 170-lifting ears. DETAILED DESCRIPTION

[0019] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific embodiments of the utility model are described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0020] The present embodiment provides a composite tank for a liquid flow battery, which adopts an inner and outer two-layer structural design, including an inner liner layer and an outer shell layer, a resin connecting layer is provided between the two, preferably A400-972 material, which can be adhered to the inner and outer layers, the inner liner layer adopts a PPHSK cloth-covered plate, the outer shell layer adopts an FRP composite material, and the outer surface of the outer shell layer is provided with a resin protective layer, preferably an anti-aging resin containing UV-9, to further enhance the protective performance of the outer shell layer; the inner and outer layers combine the advantages of PP and FRP materials, and have both safety and supporting strength, wherein the weld interfaces on the inner liner layer must meet the electric spark detection standards, the overall structure of the tank body 100 needs to be subjected to electrical insulation testing, and the insulation level must meet the requirements of long-term operation at a voltage of 1000V without insulation breakdown, damage and leakage, and the insulation value of the 1000V insulation resistance meter measurement system is greater than 10MΩ.

[0021] Preferably, a plurality of inner support rings 130 are evenly arranged from top to bottom inside the side wall of the inner liner layer to further enhance the support strength.

[0022] like Figure 1 and 2 As shown, a ladder fence 110 is connected to the outside of the tank body 100, and a tank top platform 120 is connected to the top of the ladder fence 110. The tank top platform 120 is located above the tank body 100. An electrolyte inlet 101 and an electrolyte outlet 102 are respectively provided at the upper and lower ends of the tank body 100. A top wall inlet 103, a nitrogen inlet 104, an exhaust gas port 105, a breathing valve port 106, a pressure gauge port 107 and a spare port 108 are also provided at the top. A side wall inlet 141, a balance port 142 and a thermometer port 143 are provided at the lower part, and a liquid level gauge port 144 is provided on the side wall of the tank body 100.

[0023] The side wall of the tank body 100 is evenly provided with multiple groups of insulation nails 150 along the axial direction, and a ground anchor is provided at the bottom, which can be fixedly connected to the installation ground. The ground anchor is made of insulating material to enhance the stability of the tank body 100. Preferably, reinforcing ribs 160 can be provided at the bottom of the tank body 100 to further enhance the supporting strength of the tank body 100.

[0024] Preferably, in order to facilitate the installation and transportation of the tank body 100, a lifting lug 170 is provided on the outside of the tank body 100, and the lifting lug 170 can be connected to a lifting device.

[0025] Although the utility model is disclosed as above, the utility model is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the utility model. Therefore, the protection scope of the utility model shall be subject to the scope defined by the claims.

[0026] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0027] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0028] 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 composite tank for a flow battery, characterized in that: The tank body (100) comprises an inner layer and an outer shell, wherein the inner layer is in contact with the electrolyte and is made of a plastic cloth-covered plate, and the outer shell is made of an FRP composite material. A resin connecting layer is provided between the inner layer and the outer shell to bond the two layers, and a resin protective layer is provided on the outer surface of the outer shell.

2. The composite tank for a flow battery according to claim 1, characterized in that: A plurality of inner support rings (130) are evenly arranged from top to bottom inside the side wall of the inner liner layer.

3. The composite tank for a flow battery according to claim 2, characterized in that: The outer side of the outer shell layer is connected to a ladder fence (110), the top of the ladder fence (110) is connected to a tank top platform (120), and the tank top platform (120) is located above the tank body (100).

4. The composite tank for a flow battery according to claim 3, characterized in that: The upper and lower ends of the tank body (100) are respectively provided with an electrolyte inlet (101) and an electrolyte outlet (102); the top of the tank body (100) is provided with a top wall inlet (103), a nitrogen inlet (104), an exhaust port (105), a breathing valve port (106), a pressure gauge port (107) and a spare port (108); the lower part of the tank body (100) is provided with a side wall inlet (141), a balance port (142) and a thermometer port (143); and the side wall of the tank body (100) is provided with a liquid level gauge port (144).

5. The composite tank for a flow battery according to claim 1, characterized in that: A ground anchor is provided at the bottom of the tank body (100) and can be fixedly connected to the installation ground; the ground anchor is made of insulating material.

6. The composite tank for a flow battery according to claim 1, characterized in that: The bottom of the tank body (100) is provided with reinforcing ribs (160).

7. The composite tank for a flow battery according to claim 1, characterized in that: The side wall of the tank body (100) is evenly provided with a plurality of groups of heat-insulating nails (150) along the axial direction.

8. The composite tank for a flow battery according to claim 1, characterized in that: A lifting lug (170) is provided on the outside of the tank body (100), and the lifting lug (170) can be connected to a lifting device.

9. The composite tank for a flow battery according to claim 1, characterized in that: The tank body (100) is configured to operate at a voltage of 1000V without insulation breakdown, damage or leakage, and the insulation value of a 1000V insulation resistance meter measurement system is greater than 10MΩ.

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