Skid-mounted liquid flow energy storage power station

Abstract

The utility model belongs to the technical field of liquid flow energy storage, and particularly relates to a skid-mounted liquid flow energy storage power station which comprises a tank body and a liquid accumulation part, and a frame is provided with a containing space; a hollow area is arranged at the bottom of the frame and is communicated with the accommodating space; the tank body is arranged in the accommodating space; the liquid accumulating part is arranged in the hollow area and is connected with the frame; a liquid accumulation groove with an opening in the top is formed in the liquid accumulation piece; wherein the orthographic projection, on the bottom of the frame, of the tank body is located in the liquid accumulation groove, and the liquid accumulation groove is used for collecting liquid leaked from the tank body. The liquid accumulation piece is arranged at the bottom of the tank body and used for collecting the liquid leaked from the tank body, and the problems of environmental pollution and personal injury caused by liquid leakage are reduced or avoided.

Description

Technical Field

[0001] The present disclosure belongs to the technical field of liquid flow energy storage, and in particular relates to a skid-mounted liquid flow energy storage power station. Background Art

[0002] As new energy sources (such as wind and solar energy) gradually develop, the impact of volatility and intermittency on the power grid will become increasingly significant. At the current stage, energy storage systems only need to smooth out intraday / hourly fluctuations, while future energy storage systems will need to consider intraday / seasonal fluctuations in new energy sources, which also means that long-term energy storage will be a massive market (trillions of dollars). The key element of long-term energy storage is to have independent capacity units and power units. Like pumped hydro and compressed air storage, flow batteries decouple capacity from power and have advantages such as high safety, flexible duration, easy expansion, high resource self-sufficiency, and long cycle life, attracting widespread attention. As a promising large-scale energy storage technology, flow batteries face a series of technical challenges in their development and commercialization.

[0003] Among them, the current liquid flow energy storage power station has the problem of environmental pollution and personal injury to workers due to the leakage of liquid in the tank. Utility Model Content

[0004] The purpose of this application is to provide a skid-mounted liquid flow energy storage power station, which reduces or avoids the risk of liquid splashing in the tank by arranging a liquid accumulation part at the bottom of the tank, thereby reducing or avoiding environmental pollution caused by liquid leakage and personal injury.

[0005] The present disclosure provides a skid-mounted liquid flow energy storage power station, comprising:

[0006] A frame having an accommodating space; a hollow area is provided at the bottom of the frame, the hollow area being in communication with the accommodating space;

[0007] a tank body, which is disposed in the accommodating space;

[0008] A liquid accumulation member is provided in the hollow area and connected to the frame; the liquid accumulation member is provided with a liquid accumulation groove with an open top;

[0009] The orthographic projection of the tank body on the bottom of the frame is located in the liquid collection groove, and the liquid collection groove is used to collect liquid leaked from the tank body.

[0010] In an exemplary embodiment of the present disclosure, the orthographic projection of the liquid collection groove on the bottom of the frame coincides with the hollow area.

[0011] In an exemplary embodiment of the present disclosure, the skid-mounted liquid flow energy storage power station includes at least one liquid drain pipe, which is located at the bottom of the liquid accumulation member and communicates with the liquid accumulation tank to drain the liquid in the liquid accumulation tank.

[0012] In an exemplary embodiment of the present disclosure, the liquid accumulation part includes a bottom wall, which is provided with at least one drainage hole, the drainage holes correspond one-to-one to the drainage pipes, and the drainage pipes are connected to the liquid accumulation tank through the drainage holes; the bottom wall is inclined from top to bottom along the periphery toward the center.

[0013] In an exemplary embodiment of the present disclosure, the skid-mounted liquid flow energy storage power station includes a plurality of frames stacked in a vertical direction; each frame is provided with a corresponding tank body and a liquid accumulation member; and between two adjacent frames, the upper frame and the lower frame are detachably connected;

[0014] The skid-mounted liquid flow energy storage power station includes a connecting pipe connecting the liquid storage tanks corresponding to any two adjacent frames, and the connecting pipe is at least arranged in the frame located below;

[0015] The bottom end of the communicating pipe extends into the liquid accumulation tank corresponding to the frame located below.

[0016] In an exemplary embodiment of the present disclosure, the skid-mounted liquid flow energy storage power station includes a tilt sensor provided on the outer periphery of at least one frame, so as to detect the degree of tilt between a plurality of the frames stacked in a vertical direction.

[0017] In an exemplary embodiment of the present disclosure, the frame includes two end frames arranged in parallel and spaced apart from each other, and a bottom longitudinal beam connecting the bottoms of the two end frames;

[0018] The top of the end frame is provided with a top corner piece, and the bottom is provided with a bottom corner piece. The top of the top corner piece is provided with a first connecting hole, and the bottom of the bottom corner piece is provided with a second connecting hole.

[0019] The skid-mounted liquid flow energy storage power station includes a connection structure, which passes through the first opening and the second opening on two upper and lower adjacent frames to achieve upper and lower connection between the two adjacent frames.

[0020] In an exemplary embodiment of the present disclosure, the tank body is made of steel, and an anti-corrosion layer is provided on the inner side of the tank body.

[0021] In an exemplary embodiment of the present disclosure, the skid-mounted liquid flow energy storage power station includes a heat transfer pipe, which is attached to the outer surface of the tank body; a heat exchange medium is introduced into the heat transfer pipe to achieve cooling and heating of the liquid in the tank body.

[0022] In an exemplary embodiment of the present disclosure, a ratio of a contact area between the heat transfer tube and the outer surface of the tank body to an area of ​​the outer surface of the tank body is at least 1:10.

[0023] In an exemplary embodiment of the present disclosure, the top of the heat transfer pipe is lower than the rated filling level of the tank body.

[0024] This application has the following beneficial effects:

[0025] The skid-mounted liquid flow energy storage power station disclosed herein includes a frame, a tank body, and a liquid collection member. The tank body is located within the storage space formed by the frame. The liquid collection member is located in a hollow area at the bottom of the frame. The liquid collection member is connected to the frame and is provided with a liquid collection trough with an open top. The hollow area is connected to the storage space, and the orthographic projection of the tank body on the bottom of the frame is located within the liquid collection trough. In the event of liquid leakage from the tank body, the liquid collection trough located below the tank body can be used to collect the leaked liquid, thereby reducing or avoiding environmental pollution and personal injury caused by the liquid leakage.

[0026] Other features and advantages of the present application will become apparent from the following detailed description, or may be learned in part by practice of the present application.

[0027] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings are incorporated into and constitute a part of the specification, illustrate embodiments consistent with the present disclosure, and together with the specification, serve to explain the principles of the present disclosure. Obviously, the drawings described below are only some embodiments of the present disclosure, and it is clear that those skilled in the art can derive other drawings based on these drawings without inventive effort.

[0029] Figure 1 This is a schematic front view of the structure of a cylindrical vertical tank body provided in a skid-mounted liquid flow energy storage power station in an embodiment of the present disclosure.

[0030] Figure 2 Schematic diagram of the three-dimensional structure of the frame in the embodiment of the present disclosure.

[0031] Figure 3 for Figure 1 Schematic diagram of the top view structure.

[0032] Figure 4 This is a schematic top view of the structure of a square-circular vertical tank body set in a skid-mounted liquid flow energy storage power station in an embodiment of the present disclosure.

[0033] Figure 5 for Figure 1 Schematic diagram of the side structure.

[0034] Figure 6 This is a front view structural schematic diagram of a horizontal tank body provided in a skid-mounted liquid flow energy storage power station in an embodiment of the present disclosure.

[0035] Figure 7 for Figure 6 Schematic diagram of the top view structure.

[0036] Figure 8 for Figure 6 Schematic diagram of the side structure.

[0037] Figure 9 Schematic diagram of the three-dimensional structure of the liquid accumulation part in the embodiment of the present disclosure.

[0038] Figure 10 Schematic diagram of the three-dimensional structure when the liquid accumulation part is located in the hollow area in the embodiment of the present disclosure.

[0039] Figure 11 It is a schematic front view of the structure of multiple frames stacked in the vertical direction in an embodiment of the present disclosure.

[0040] Description of reference numerals:

[0041] 1. Skid-mounted liquid flow energy storage power station;

[0042] 2. Frame; 21. End frame; 211. End upper beam; 212. End lower beam; 213. Column; 22. Bottom longitudinal beam; 23. Top longitudinal beam; 24. Top corner fitting; 25. Bottom corner fitting; 26. First connecting hole; 27. Second connecting hole;

[0043] 3. Tank; 301. Battery stack; 302. Liquid outlet pipe; 303. Liquid inlet pipe; 304. Liquid suction pump; 305. Liquid inlet; 306. Nitrogen filling port; 307. Liquid level gauge; 308. Safety valve port; 309. Battery monitoring system; 310. Manhole inspection port;

[0044] 4. Liquid accumulation part; 41. Bottom wall; 411. Drain hole; 42. Side wall;

[0045] 5. Drainage pipe;

[0046] 6. Connection structure;

[0047] 7. Connecting pipe;

[0048] 8. Alarm device;

[0049] 9. Heat transfer tube;

[0050] Z, vertical direction. DETAILED DESCRIPTION

[0051] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concepts of the example embodiments to those skilled in the art.

[0052] In addition, the described features, structures or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present disclosure. However, those skilled in the art will appreciate that the technical solutions of the present disclosure can be practiced without one or more of the specific details, or other methods, components, devices, steps, etc. can be adopted. In other cases, well-known methods, devices, implementations or operations are not shown or described in detail to avoid blurring various aspects of the present disclosure.

[0053] The present disclosure is further described below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the technical features involved in the various embodiments of the present disclosure described below can be combined with each other as long as they do not conflict with each other. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present disclosure, and should not be construed as limiting the present disclosure.

[0054] like Figure 1 As shown, an embodiment of the present disclosure provides a skid-mounted liquid flow energy storage power station 1, comprising: a frame 2, a tank body 3 and a liquid accumulation part 4.

[0055] The frame 2 has an accommodating space, and a hollow area is provided at the bottom of the frame 2, which communicates with the accommodating space.

[0056] Specifically, such as Figure 2 As shown, the frame 2 of the present disclosure may include two end frames 21 arranged in parallel and spaced apart, and a bottom longitudinal beam 22 connecting the bottoms of the end frames 21. The end frames 21 and the bottom longitudinal beam 22 together enclose a housing space. The area between the two bottom longitudinal beams 22 is the hollow area.

[0057] Furthermore, the end frame 21 may include an upper end beam 211, a lower end beam 212, and two columns 213. The upper end beam 211 and the lower end beam 212 are arranged opposite each other, and the upper end beam 211 is located vertically above the lower end beam 212. The lower end beam 212 is located at the bottom of the frame 2. The columns 213 are arranged between the upper end beam 211 and the lower end beam 212 and are connected to the upper end beam 211 and the lower end beam 212. The lower end beam 212 and the bottom longitudinal beam 22 are collectively arranged to form a hollow area.

[0058] It should be noted that the bottom of the end frame 21 refers to the portion of the end frame 21 close to the end lower beam 212. The bottom of the frame 2 refers to the portion of the frame 2 close to the end lower beam 212.

[0059] In addition, the frame 2 may also include a top longitudinal beam 23, which is connected to the top of the two end frames 21. The present disclosure uses the top longitudinal beam 23 and the bottom longitudinal beam 22 to connect the two end frames 21, which can improve the stability and pressure resistance of the overall structure of the frame 2.

[0060] The tank body 3 is arranged in the accommodating space, and the tank body 3 can be filled with liquid such as electrolyte. Figure 1 、 Figures 3 to 8 As shown, in the disclosed embodiment, the tank body 3 can be a vertical tank body with an axis extending vertically, or a horizontal tank body with an axis extending horizontally. The shape of the tank body 3 can be cylindrical, square, or round, depending on the actual situation. The vertical direction refers to the vertical direction Z, and the horizontal direction is perpendicular to the vertical direction Z.

[0061] By arranging the tank 3 within the accommodation space formed by the frame 2, the present disclosure facilitates the transport of the skid-mounted liquid flow energy storage power station 1 while also enabling intermodal transport of the skid-mounted liquid flow energy storage power station 1 by road, rail, or sea. The tank 3 is located within the accommodation space formed by the frame 2, which protects the tank 3, thereby reducing or avoiding the risk of damage to the tank 3.

[0062] It should be noted that the material of the tank body 3 in the embodiment of the present disclosure can be steel, such as carbon steel or stainless steel. Steel has great hardness. Using steel to form the tank body 3 can improve the structural strength of the tank body 3.

[0063] An anti-corrosion layer may also be provided on the inner side of the tank body 3. When transporting the skid-mounted liquid flow energy storage power station 1, there is no need to extract the liquid in the tank body 3 before transporting it, thereby simplifying the process of transporting the skid-mounted liquid flow energy storage power station 1 and making the skid-mounted liquid flow energy storage power station 1 easier to transport.

[0064] In the embodiment of the present disclosure, the anti-corrosion layer can be a plastic layer lining the inner side of the tank body 3. The plastic layer can be made of materials such as polyethylene (PE) and polytetrafluoroethylene (PTFE). Through specific processes such as rotational molding, the plastic layer is tightly combined with the inner side of the tank body 3 to form a whole (i.e., a steel-lined plastic tank body). The present disclosure provides a plastic layer on the inner side of the tank body 3 to resist corrosion from the liquid contained in the tank body 3 through the plastic layer, thereby extending the service life of the tank body 3. At the same time, the plastic layer forms a whole with the tank body 3, which can strengthen the structural strength of the tank body 3, thereby improving the load-bearing capacity of the tank body 3.

[0065] However, the anti-corrosion layer in the present disclosure may also be a layer of corrosion-resistant coating applied to the inner side of the tank body 3, such as epoxy resin, polyurethane, or the like, with the corrosion-resistant coating and the tank body 3 forming an integral unit (i.e., a steel inner-coated tank body). The corrosion-resistant coating can effectively isolate the tank body 3 from the liquid inside, thereby reducing or preventing the risk of corrosion of the tank body 3. Furthermore, the corrosion-resistant coating has a smooth surface that is not easily stained or residue-prone, thereby facilitating cleaning and maintenance of the tank body 3.

[0066] In addition, the present invention can also set a vacuum jacket structure on the outside of the tank body 3, forming a closed space between the outer surface of the tank body 3 and the vacuum jacket structure, thereby reducing the leakage of liquid in the tank body 3 and causing environmental pollution and personal injury.

[0067] The liquid accumulation member 4 in the embodiment of the present disclosure is arranged in the hollow area, and the liquid accumulation member 4 is connected to the frame 2. The liquid accumulation member 4 is provided with a liquid accumulation groove with an open top.

[0068] It should be noted that the top of the liquid accumulation member 4 refers to the portion of the liquid accumulation member 4 close to the center of the accommodating space. Therefore, the opening of the liquid accumulation groove on the liquid accumulation member 4 faces the center of the accommodating space.

[0069] Among them, the liquid collection part 4 is used to collect the liquid leaked from the tank body 3. The positive projection of the tank body 3 on the bottom of the frame 2 is located in the liquid collection tank. Therefore, when the liquid in the tank body 3 leaks, the liquid can be collected in the liquid collection tank, thereby avoiding environmental pollution caused by liquid leakage and harm to the staff.

[0070] In the embodiment of the present disclosure, the orthographic projection of the liquid collection groove on the bottom of the frame 2 can be located in the hollow area, but is not limited to this. The orthographic projection of the liquid collection groove on the bottom of the frame 2 can also coincide with the hollow area, thereby increasing the surface area of ​​the liquid collection part 4 for collecting the leaked liquid from the tank body 3, so as to reduce the risk of environmental pollution and personal injury caused by splashing of the leakage.

[0071] In the disclosed embodiment, two tanks 3 can be disposed within the frame 2, each storing a positive electrolyte and a negative electrolyte. Furthermore, a stack 301 can be disposed between the two tanks 3 within the frame 2, with the stack 301 communicating with each of the two tanks 3, allowing the liquids within the two tanks 3 to be transferred to the stack 301 for reaction.

[0072] Furthermore, a liquid outlet pipe 302 and a liquid inlet pipe 303 may be connected to the cell stack 301. Both the liquid outlet pipe 302 and the liquid inlet pipe 303 are connected to the tank 3. A liquid suction pump 304 on the liquid outlet pipe 302 draws liquid from the tank 3. The liquid is then transferred through the liquid outlet pipe 302 to the cell stack 301 for reaction, generating a potential difference to generate electricity. The liquid inlet pipe 303 is used to transport the reacted liquid in the cell stack 301 to the tank 3.

[0073] It should be noted that a liquid inlet 305 can be provided on the tank body 3 in the present disclosure, and the liquid inlet pipe 303 communicates with the interior of the tank body 3 through the liquid inlet 305. The number of liquid inlet 305 on the tank body 3 can be one, but is not limited thereto. The number of liquid inlets 305 can also be multiple, for example, two, three, four, etc., depending on actual conditions. By providing multiple liquid inlets 305, the reacted liquid in the fuel cell stack 301 can be separated, and the liquid enters the tank body 3 evenly through the multiple liquid inlets 305, thereby increasing the rate at which the liquid enters the tank body 3.

[0074] A nitrogen filling port 306 can also be opened on the tank body 3. During the process of transporting the liquid in the battery stack 301 to the tank body 3, nitrogen can be simultaneously filled into the tank body 3 through the nitrogen filling port 306 for protection, so as to maintain the purity and stability of the liquid and improve the safety of the skid-mounted liquid flow energy storage power station 1.

[0075] Tank 3 may be provided with a liquid level gauge 307 and a safety valve 308. The liquid level gauge 307 facilitates real-time monitoring of the liquid level within tank 3, preventing material waste and personal injury from liquid leakage. The safety valve 308 prevents damage to tank 3 due to pressure exceeding a specified value, thereby improving the safety of the skid-mounted liquid flow energy storage power station 1.

[0076] In addition, a battery monitoring system 309 can be connected to the tank 3. The battery monitoring system 309 is connected to the battery stack 301. When the skid-mounted liquid flow energy storage power station 1 is in operation, the battery monitoring system 309 is used to monitor and control the operating status of the battery stack 301 to ensure that the battery can operate efficiently and safely. The battery monitoring system 309 may include a battery management system (BMS) and an energy management system (EMS) to implement functions such as energy management, control, safety monitoring, data acquisition, and communication.

[0077] A manhole inspection port 310 may also be provided on the tank body 3 to facilitate maintenance of the tank body 3 by the staff.

[0078] In the disclosed embodiment, the skid-mounted liquid flow energy storage power station 1 may include at least one drain pipe 5 , which is located at the bottom of the liquid accumulation member 4 and communicates with the liquid accumulation tank to discharge the liquid in the liquid accumulation tank.

[0079] It should be noted that the bottom of the liquid accumulation member 4 refers to the portion of the liquid accumulation member 4 that is away from the tank body 3. The drain pipe 5 connected to the liquid accumulation tank can be located entirely outside the accommodating space. The present disclosure can provide multiple drain pipes 5 that are identical to the liquid accumulation tank to increase the rate of liquid discharge from the liquid accumulation tank.

[0080] Further, such as Figures 9 and 10 As shown, the liquid accumulation member 4 may include a bottom wall 41 , and at least one liquid drainage hole 411 is provided on the bottom wall 41 .

[0081] Among them, the bottom wall 41 can be tilted from top to bottom along the periphery toward the center, so that the bottom wall 41 forms a slope at least at a position close to the drainage hole 411. The liquid in the liquid accumulation groove automatically slides into the drainage hole 411 under the action of the slope, thereby realizing the automatic discharge of the liquid in the liquid accumulation groove, reducing or avoiding the situation of large-scale accumulation of liquid in the liquid accumulation groove.

[0082] It should be noted that the drainage pipe 5 in the present disclosure can correspond one-to-one to the drainage hole 411, that is, when N (N≥1, and N is a positive integer) drainage holes 411 are provided on the bottom wall 41 of the liquid accumulation part 4, N corresponding drainage holes 411 can also be provided in the skid-mounted liquid flow energy storage power station 1.

[0083] In the disclosed embodiment, a skid-mounted liquid flow energy storage power station 1 comprises a plurality of frames 2 stacked in a vertical direction Z. Each frame 2 houses a corresponding tank 3 and a liquid accumulation member 4. Two adjacent frames 2 are detachably connected to each other, with the upper frame 2 being detachably connected to the lower frame 2. The number of frames 2 can be adjusted based on the energy storage requirements of the skid-mounted liquid flow energy storage power station 1.

[0084] like Figure 11 As shown, the top of the end frame 21 of the present disclosure may be provided with a top corner fitting 24, and the bottom may be provided with a bottom corner fitting 25. Specifically, the top corner fitting 24 may be provided on the upper end beam 211 or on the top of the column 213. The bottom corner fitting 25 may be provided on the lower end beam 212 or on the bottom of the column 213.

[0085] The top of the top corner piece 24 may be provided with a first connection hole 26, and the bottom of the bottom corner piece 25 may be provided with a second connection hole 27. The skid-mounted liquid flow energy storage power station 1 includes a connection structure 6, which extends through the first connection hole 26 and the second connection hole 27 on the two upper and lower adjacent frames 2, thereby achieving a detachable connection between the two adjacent frames 2.

[0086] It should be noted that the connection structure 6 in the embodiment of the present disclosure can be a bridge lock to improve the safety and stability of the connection between the frames 2. However, the present disclosure is not limited to this. Structures other than bridge locks as the connection structure 6 to achieve connection between two upper and lower adjacent frames 2 through the first opening and the second opening are also included in the embodiment of the present disclosure.

[0087] The present disclosure reduces the overall footprint of the skid-mounted liquid flow energy storage power station 1 by stacking multiple frames 2 along the vertical direction Z while storing the same amount of electricity, thereby improving the competitiveness of the product.

[0088] It should be noted that when the skid-mounted liquid flow energy storage power station 1 has multiple frames 2 stacked in the vertical direction Z, the skid-mounted liquid flow energy storage power station 1 may also include a connecting pipe 7 connecting the liquid storage tanks corresponding to any two adjacent frames 2, and the connecting pipe 7 is at least arranged in the frame 2 located below.

[0089] For example, when the skid-mounted liquid flow energy storage power station 1 includes a first frame 2, a second frame 2, and a third frame 2 stacked sequentially from bottom to top in the vertical direction Z, the connecting pipe 7 can be located only within the first and second frames 2 at the bottom. The first frame 2 can be secured to the ground via a base lock. The connecting pipe 7 within the first frame 2 is used to connect the liquid trough corresponding to the second frame 2 with the liquid trough corresponding to the first frame 2, thereby draining the liquid in the liquid trough corresponding to the second frame 2 into the liquid trough corresponding to the first frame 2. The liquid in the liquid trough corresponding to the first frame 2 can then be drained to the outer cofferdam via the drain pipe 5. Correspondingly, the connecting pipe 7 within the second frame 2 is used to connect the liquid trough corresponding to the third frame 2 with the liquid trough corresponding to the second frame 2, thereby draining the liquid in the liquid trough corresponding to the third frame 2 into the liquid trough corresponding to the second frame 2. Since no other frames 2 are stacked above the third frame, the connecting pipe 7 can be omitted within the third frame 2, thereby reducing the manufacturing cost of the skid-mounted liquid flow energy storage power station 1.

[0090] However, the present disclosure is not limited to this, and the connecting pipe 7 can also be set in the third frame 2. That is, in the present disclosure, the connecting pipe 7 can be set in all frames 2, so that when the frames 2 in the skid-mounted liquid flow energy storage power station 1 are stacked arbitrarily, the liquid storage tanks corresponding to any two adjacent frames 2 can still be connected. At the same time, when it is necessary to add a frame 2 to the skid-mounted liquid flow energy storage power station 1 and stack the added frame 2 on top of all frames 2, the liquid storage tank corresponding to the newly added frame 2 can also be connected to the liquid storage tank corresponding to the frame 2 below it, thereby improving the flexibility of stacking the frames 2 in the skid-mounted liquid flow energy storage power station 1.

[0091] In order to reduce the problem of liquid splashing due to leakage from the tank body 3, the present disclosure can also extend the bottom end of the connecting pipe 7 into the liquid storage tank corresponding to the frame 2 located below.

[0092] Specifically, the liquid accumulation part 4 in the present disclosure may include a side wall 42 arranged around the bottom wall 41. When the bottom end of the connecting tube 7 extends into the liquid accumulation groove below, the end surface of the bottom end of the connecting tube 7 may be lower than the side of the side wall 42 in the liquid accumulation part 4 corresponding to the lower frame 2 that faces away from the bottom wall 41, or the end surface of the bottom end of the connecting tube 7 may be flush with the side of the side wall 42 in the liquid accumulation part 4 corresponding to the lower frame 2 that faces away from the bottom wall 41, so that the liquid in the liquid accumulation groove corresponding to the upper frame 2 can directly enter the liquid accumulation groove corresponding to the lower frame 2 along the drainage pipe 5.

[0093] Furthermore, it should be noted that the embodiment of the present disclosure can directly connect the corresponding liquid collection grooves of any two adjacent frames 2 via the connecting pipe 7. However, the present disclosure is not limited thereto. The present disclosure can also connect the connecting pipe 7 located in the lower frame 2 with the drainage pipe 5 connected to the corresponding liquid collection groove of the upper frame 2, thereby achieving communication between the corresponding liquid collection grooves of the two adjacent frames 2.

[0094] In some embodiments of the present disclosure, the skid-mounted liquid flow energy storage power station 1 may further include a tilt sensor arranged on the outer periphery of at least one frame 2, so as to detect the degree of tilt between multiple frames 2 stacked in the vertical direction Z in real time, and facilitate the early detection of tilt problems of the frame 2 and the taking of measures.

[0095] For example, the present disclosure may place a tilt sensor on the outer periphery of the bottommost frame 2, thereby enabling real-time monitoring of the tilt of any other frame 2 located above. The tilt sensor in the present disclosure may employ an optical sensor, an ultrasonic sensor, or other similar sensor. However, this is not limiting. The present disclosure may also place a tilt sensor on the outer periphery of the bottommost frame 2, or on the outer periphery of any intermediate frame 2. The tilt sensor in the present disclosure may also employ sensors other than optical and ultrasonic sensors, depending on the actual situation.

[0096] In addition, the skid-mounted liquid flow energy storage power station 1 may also include an alarm device 8, which is installed in the liquid storage tank and is used to issue an early warning after detecting liquid leakage in the tank body 3. Based on the early warning, personnel can promptly perform maintenance on the tank body 3 to reduce liquid loss. The alarm device 8 can be a contact sensor such as a humidity sensor or a circuit trigger, but is not limited to this. The alarm device 8 can also be a non-contact sensor such as an optical sensor, an ultrasonic sensor, or a float switch, depending on the actual situation.

[0097] In the disclosed embodiment, the skid-mounted liquid flow energy storage power station 1 may further include a heat transfer pipe 9 attached to the outer surface of the tank 3. By introducing a heat exchange medium into the heat transfer pipe 9, the liquid in the tank 3 can be cooled or heated.

[0098] It should be noted that in the present disclosure, the heat transfer tube 9 may be made of stainless steel to avoid the risk of corrosion of the heat transfer tube 9 , but is not limited thereto. The heat transfer tube 9 may also be made of other materials besides stainless steel.

[0099] In addition, the heat exchange medium in the present disclosure may be ethylene glycol, but is not limited thereto. The heat exchange medium may also be water, steam, or other medium that can increase or decrease the temperature of the tank body 3. When the heat exchange medium is water, the heat transfer pipe 9 can be connected in series with a hose to extract groundwater or reservoir water, thereby achieving temperature control of the liquid inside the tank body 3.

[0100] The present invention disposes a heat transfer conduit on the surface of the tank 3 to introduce a heat exchange medium into the conduit based on the heat absorption and heat release of the liquid within the tank 3. This controls the liquid within the tank 3 at an optimal operating temperature, thereby improving the efficiency and safety of the liquid flow energy storage power station and extending its service life. Furthermore, the present invention utilizes the heat transfer tube 9 to control the temperature of the liquid within the tank 3, reducing or avoiding the significant energy consumption associated with temperature control using air conditioning, thereby lowering the operating cost of the liquid flow energy storage power station.

[0101] In the embodiment of the present disclosure, the heat transfer conduit may be spirally shaped to surround the outer periphery of the tank body 3. However, the present invention is not limited thereto, and the heat transfer conduit may also be straight or arc-shaped to fit the surface of the tank body 3.

[0102] For example, when the tank body 3 is a vertical tank body 3, the heat transfer conduit can be a spiral conduit arranged around the outer circumference of the tank body 3. When the tank body 3 is a vertical tank body 3, the heat transfer conduit can be composed of multiple straight tubes and multiple arc-shaped interconnected tubes, and the heat transfer conduit is attached to the lower surface of the tank body 3. The lower surface of the tank body 3 refers to the portion of the outer surface of the tank body 3 near the bottom of the frame 2.

[0103] To ensure that the heat transfer conduit can effectively raise and lower the temperature of the liquid inside the tank 3, the ratio of the contact area between the heat transfer tube 9 and the outer surface of the tank 3 to the area of ​​the outer surface of the tank 3 in the disclosed embodiment is at least 1:10. As the contact area between the heat transfer tube 9 and the outer surface of the tank 3 increases, the heat exchange area between the heat transfer tube 9 and the tank 3 also increases, thereby improving the heat exchange rate of the liquid inside the tank 3.

[0104] In the disclosed embodiment, the top of the heat transfer tube 9 should be lower than the rated filling level of the tank body 3 .

[0105] It should be noted that the top of the heat transfer tube 9 refers to the portion of the heat transfer tube 9 away from the bottom of the frame. The rated filling level of the tank body 3 refers to the highest position of the liquid in the tank body 3 when the tank body 3 is filled with the maximum volume of liquid.

[0106] For example, in the present disclosure, the maximum volume of liquid that can be filled into the tank body 3 is 80% of the volume of the tank body 3. When the tank body 3 is filled with liquid that accounts for 80% of its volume, the liquid level in the tank body 3 is the rated filling level of the tank body 3. However, the present invention is not limited thereto. The maximum volume of liquid that can be filled into the tank body 3 may also be 70%, 90%, etc. of the volume of the tank body 3, and the specific volume can be determined according to actual conditions.

[0107] The present disclosure reduces or avoids the top of the tank body 3 (i.e., the portion of the tank body 3 away from the bottom of the frame 2) being in an empty-burning state for a long time by making the top of the heat transfer tube 9 lower than the rated filling level of the tank body 3, thereby improving the heating efficiency of the heat transfer tube 9 and extending the service life of the tank body 3.

[0108] Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the technical features being referred to. Thus, a feature identified as "first," "second," or "third" may explicitly or implicitly include one or more of such features. Throughout the present disclosure, "plurality" means two or more, unless otherwise specifically defined.

[0109] It should be noted that "upper" and "lower" are only used to distinguish for the convenience of description, and do not impose any directional restrictions on the embodiments of the present disclosure. For example, the "upper" may actually be the "lower" orientation. In the present disclosure, unless otherwise clearly specified and limited, the terms "assembly" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to the specific circumstances.

[0110] In the description of this specification, the reference terms "some embodiments", "exemplarily", etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0111] Although the embodiments of the present disclosure have been shown and described above, it is understood that the above embodiments are illustrative and cannot be understood as limitations on the present disclosure. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present disclosure. Therefore, any changes or modifications made in accordance with the claims and description of the present disclosure shall fall within the scope of the patent of the present disclosure.

Claims

1. A skid-mounted liquid flow energy storage power station, characterized in that: include: A frame having an accommodating space; a hollow area is provided at the bottom of the frame, the hollow area being in communication with the accommodating space; a tank body, which is disposed in the accommodating space; A liquid accumulation member is provided in the hollow area and connected to the frame; the liquid accumulation member is provided with a liquid accumulation groove with an open top; The orthographic projection of the tank body on the bottom of the frame is located in the liquid collection groove, and the liquid collection groove is used to collect liquid leaked from the tank body.

2. The skid-mounted liquid flow energy storage power station according to claim 1, characterized in that: The orthographic projection of the liquid collection groove on the bottom of the frame coincides with the hollow area.

3. The skid-mounted liquid flow energy storage power station according to claim 1, characterized in that: The skid-mounted liquid flow energy storage power station includes at least one liquid drain pipe, which is located at the bottom of the liquid accumulation member and communicates with the liquid accumulation tank to drain the liquid in the liquid accumulation tank.

4. The skid-mounted liquid flow energy storage power station according to claim 3, characterized in that: The liquid accumulation part includes a bottom wall, which is provided with at least one drainage hole. The drainage holes correspond to the drainage pipes one by one, and the drainage pipes are connected to the liquid accumulation groove through the drainage holes. The bottom wall is inclined from top to bottom along the periphery toward the center.

5. The skid-mounted liquid flow energy storage power station according to claim 1, characterized in that: The skid-mounted liquid flow energy storage power station comprises a plurality of frames stacked in a vertical direction; each frame is provided with a corresponding tank body and a liquid accumulation member; and the upper frame and the lower frame of two adjacent frames are detachably connected; The skid-mounted liquid flow energy storage power station includes a connecting pipe connecting the liquid storage tanks corresponding to any two adjacent frames, and the connecting pipe is at least arranged in the frame located below; The bottom end of the communicating pipe extends into the liquid accumulation tank corresponding to the frame located below.

6. The skid-mounted liquid flow energy storage power station according to claim 5, characterized in that: The skid-mounted liquid flow energy storage power station includes a tilt sensor provided on the outer periphery of at least one frame, for detecting the tilt degree between a plurality of frames stacked in a vertical direction.

7. The skid-mounted liquid flow energy storage power station according to claim 5, characterized in that: The frame includes two end frames arranged in parallel and spaced apart, and a bottom longitudinal beam connecting the bottoms of the two end frames; The top of the end frame is provided with a top corner piece, and the bottom is provided with a bottom corner piece. The top of the top corner piece is provided with a first connecting hole, and the bottom of the bottom corner piece is provided with a second connecting hole. The skid-mounted liquid flow energy storage power station includes a connection structure, which passes through the first connection hole and the second connection hole on the two upper and lower adjacent frames to achieve upper and lower connection of the two adjacent frames.

8. The skid-mounted liquid flow energy storage power station according to claim 1, characterized in that: The tank body is made of steel, and an anti-corrosion layer is provided on the inner side of the tank body.

9. The skid-mounted liquid flow energy storage power station according to claim 1, characterized in that: The skid-mounted liquid flow energy storage power station includes a heat transfer pipe, which is attached to the outer surface of the tank body. A heat exchange medium is introduced into the heat transfer pipe to achieve cooling and heating of the liquid in the tank body.

10. The skid-mounted liquid flow energy storage power station according to claim 9, characterized in that: The ratio of the contact area between the heat transfer tube and the outer surface of the tank body to the area of ​​the outer surface of the tank body is at least 1:

10.

11. The skid-mounted liquid flow energy storage power station according to claim 9, characterized in that: The top of the heat transfer tube is lower than the rated filling level of the tank body.

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