Skid-mounted liquid flow energy storage power station

Abstract

The invention 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 invention 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] With the gradual development of new energy (wind energy and solar energy, etc.), the impact of volatility and intermittency on the power grid will become more and more obvious. At this stage, the energy storage system only needs to smooth the intraday / hourly fluctuations, while the future energy storage system needs to consider the new energy fluctuations between days / seasons. Therefore, long-term energy storage is a rigid market, which also means that long-term energy storage is a huge-scale market (trillion-level). The key element of long-term energy storage is to have independent capacity units and power units. Like pumped storage and compressed air, liquid flow batteries decouple capacity from power, have the advantages of high safety, flexible duration, convenient expansion, high resource self-sufficiency, and long cycle life, and have attracted widespread attention. As a potential large-scale energy storage technology, liquid 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. Summary of the invention

[0004] The purpose of the present 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 piece 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 a containing space; a hollow area is provided at the bottom of the frame, and the hollow area is communicated with the containing space;

[0007] A tank body, which is arranged in the accommodating space;

[0008] A liquid accumulation member, which is arranged in the hollow area and connected to the frame; the liquid accumulation member is provided with a liquid accumulation groove with a top opening;

[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 discharge the liquid in the liquid accumulation tank.

[0012] In an exemplary embodiment of the present disclosure, the liquid accumulation part includes a bottom wall, the bottom wall 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 with the liquid accumulation groove 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 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;

[0014] The skid-mounted liquid flow energy storage power station comprises 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 connecting pipe extends into the liquid storage 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 disposed on the outer peripheral side of at least one frame, so as to detect the tilt degree between a plurality of the frames stacked in the 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 end frame is provided with a top corner piece at the top and a bottom corner piece at the bottom, 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 comprises a connection structure, and the connection structure penetrates the first opening and the second opening on two upper and lower adjacent frames to achieve upper and lower connection of 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, 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.

[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 scheme has the following beneficial effects:

[0025] The skid-mounted liquid flow energy storage power station disclosed in the present invention includes a frame, a tank body and a liquid accumulation part. The tank body is located in the accommodation space formed by the frame, and the liquid accumulation part is located in the hollow area at the bottom of the frame. The liquid accumulation part is connected to the frame, and a liquid accumulation groove with a top opening is provided on the liquid accumulation part. The hollow area is connected to the accommodation space, and the orthographic projection of the tank body on the bottom of the frame is located in the liquid accumulation groove. When liquid leaks out of the tank body, the liquid accumulation groove located below the tank body can be used to collect the leaked liquid, thereby reducing or avoiding environmental pollution caused by liquid leakage and personal injury.

[0026] Other features and advantages of the present application will become apparent from the following detailed description, or may be learned in part by the 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 herein are incorporated into and constitute a part of the specification, illustrate embodiments consistent with the present disclosure, and are used together with the specification to explain the principles of the present disclosure. Obviously, the accompanying drawings described below are only some embodiments of the present disclosure, and for ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work.

[0029] Figure 1 It is a front view structural schematic diagram 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 It is a 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 It is a schematic diagram of the top view of the structure of a square-circular vertical tank body arranged 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 It 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] Fig. 9 It is a schematic diagram of the three-dimensional structure of the liquid accumulation part in the embodiment of the present disclosure.

[0038] Fig.10 It is a 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] Fig.11 It is a schematic diagram of the front view 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 piece; 25. Bottom corner piece; 26. First connecting hole; 27. Second connecting hole;

[0043] 3. Tank body; 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. drainage 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 a variety of 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 more comprehensive and complete and will fully convey the concept of the example embodiments to those skilled in the art.

[0052] In addition, the described features, structures or characteristics may be combined in one or more embodiments in any suitable manner. 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 may be practiced without one or more of the specific details, or other methods, components, devices, steps, etc. may be adopted. In other cases, known methods, devices, implementations or operations are not shown or described in detail to avoid blurring the various aspects of the present disclosure.

[0053] The present disclosure is further described in detail 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 be used to explain the present disclosure, and should not be understood 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 a containing space, and a hollow area is provided at the bottom of the frame 2, and the hollow area is communicated with the containing space.

[0056] Specifically, Figure 2 As shown, the frame 2 in 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 two end frames 21. The two end frames 21 and the bottom longitudinal beam 22 are jointly arranged to form an accommodating space. The area between the two bottom longitudinal beams 22 is the hollow area.

[0057] Further, the end frame 21 may include an upper end beam 211, a lower end beam 212, and two columns 213, wherein the upper end beam 211 and the lower end beam 212 are arranged opposite to each other, and the upper end beam 211 is located vertically above the lower end beam 212, and the lower end beam 212 is located at the bottom of the frame 2. The column 213 is arranged between the upper end beam 211 and the lower end beam 212, and is 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 jointly 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 further include a top longitudinal beam 23 , which is connected to the tops of the two end frames 21 . The present disclosure utilizes the top longitudinal beam 23 and the bottom longitudinal beam 22 to achieve the connection of the two end frames 21 , thereby improving the stability and compression resistance of the overall structure of the frame 2 .

[0060] The tank body 3 is disposed in the accommodating space, and liquid such as electrolyte can be filled into the tank body 3. Figure 1 , Figures 3 to 8 As shown, in the embodiment of the present disclosure, the tank body 3 can be a vertical tank body with an axis extending in the vertical direction, or a horizontal tank body with an axis extending in the horizontal direction. The shape of the tank body 3 can be cylindrical, square, round, etc., which can be determined according to actual conditions. Among them, the vertical direction refers to the vertical direction Z, and the horizontal direction is perpendicular to the vertical direction Z.

[0061] The present disclosure arranges the tank body 3 in the accommodation space formed by the frame 2, so as to facilitate the transportation of the skid-mounted liquid flow energy storage power station 1 and realize the road-rail-sea multimodal transportation of the skid-mounted liquid flow energy storage power station 1. The tank body 3 is located in the accommodation space formed by the frame 2, and the frame 2 protects the tank body 3, thereby reducing or avoiding the risk of damage to the tank body 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, stainless steel. Steel has a relatively high hardness. The use of 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, it is not necessary to extract the liquid in the tank body 3 for transportation, 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 lined on 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 (that is, a steel-lined plastic tank body). The present disclosure sets a plastic layer on the inner side of the tank body 3 to resist the corrosion of 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 and the tank body 3 form a whole, which can strengthen the structural strength of the tank body 3, thereby improving the 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 on the inner side of the tank body 3, such as epoxy resin, polyurethane and other materials, and the corrosion-resistant coating and the tank body 3 form a whole (i.e., a steel inner coating tank body). The corrosion-resistant coating can effectively isolate the tank body 3 from the liquid inside it to reduce or avoid the risk of corrosion of the tank body 3. At the same time, the surface of the corrosion-resistant coating is smooth and not easy to adhere to dirt and residue, so that the tank body 3 can be easily cleaned and maintained.

[0066] In addition, the present disclosure can also set a vacuum jacket structure outside the tank body 3, and form 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 groove. Therefore, when the liquid in the tank body 3 leaks, the liquid can be collected in the liquid collection groove, thereby avoiding liquid leakage to cause environmental pollution 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 of 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 may be provided in the frame 2, and the two tanks 3 may store positive electrode electrolyte and negative electrode electrolyte respectively. At the same time, a battery stack 301 may be provided between the two tanks 3 in the frame 2, and the battery stack 301 is connected to the two tanks 3 respectively, so that the liquid in the two tanks 3 can be transmitted to the battery stack 301 for reaction.

[0072] Furthermore, the cell stack 301 may be connected to a liquid outlet pipe 302 and a liquid inlet pipe 303, both of which are connected to the tank body 3, and a liquid suction pump 304 on the liquid outlet pipe 302 sucks liquid from the tank body 3, and the liquid is transferred to the cell stack 301 through the liquid outlet pipe 302 to react and generate a potential difference to generate electrical energy. The liquid inlet pipe 303 is used to transport the liquid in the cell stack 301 that has completed the reaction to the tank body 3.

[0073] It should be noted that a liquid inlet 305 may be provided on the tank body 3 in the present disclosure, and the liquid inlet pipe 303 is connected to the inside of the tank body 3 through the liquid inlet 305. The number of the liquid inlet 305 on the tank body 3 may be one, but is not limited thereto, and the number of the liquid inlet 305 may also be multiple, for example, two, three, four, etc., depending on the actual situation. By providing multiple liquid inlets 305, the liquid that has been reacted in the battery 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 may also be provided on the tank body 3. During the process of transporting the liquid in the battery stack 301 to the tank body 3, nitrogen may 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] A liquid level gauge 307 and a safety valve 308 may be provided on the tank body 3. The liquid level gauge 307 can facilitate real-time observation of the liquid level inside the tank body 3 to prevent material waste and personal injury caused by liquid leakage. The safety valve 308 can prevent the tank body 3 from being damaged 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, the tank 3 may be connected to a battery monitoring system 309, which is connected to the battery stack 301. When the skid-mounted liquid flow energy storage power station 1 is working, 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 work efficiently and safely. The battery monitoring system 309 may include a battery management system (BMS) and an energy management system (EMS) to achieve 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 part 4 refers to the part of the liquid accumulation part 4 away from the tank body 3. The drainage pipe 5 connected to the liquid accumulation tank can be located outside the accommodating space as a whole. The present disclosure can set multiple drainage pipes 5 that are the same as the liquid accumulation tank to increase the discharge rate of the liquid in 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 discharge hole 411 is provided on the bottom wall 41 .

[0081] Among them, the bottom wall 41 can be inclined 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 where a large amount of liquid accumulates 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, the skid-mounted liquid flow energy storage power station 1 includes a plurality of frames 2 stacked in a vertical direction Z, each frame 2 being provided with a corresponding tank 3 and a liquid accumulation member 4. The upper frame 2 and the lower frame 2 of two adjacent frames 2 are detachably connected. The number of frames 2 can be set according to the energy storage requirements of the skid-mounted liquid flow energy storage power station 1.

[0084] like Fig.11 As shown, the top of the end frame 21 in the present disclosure may be provided with a top corner piece 24, and the bottom may be provided with a bottom corner piece 25. Specifically, the top corner piece 24 may be provided on the end upper beam 211, or on the top of the column 213. The bottom corner piece 25 may be provided on the end lower 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 passes through the first connection hole 26 and the second connection hole 27 on the two upper and lower adjacent frames 2, thereby realizing 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 may be a bridge lock to improve the safety and stability of the connection between the frames 2. However, it is not limited thereto, and other structures other than the bridge lock as the connection structure 6 to achieve the connection between the two upper and lower adjacent frames 2 through the first opening and the second opening can all be 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 a plurality of 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 set only in the first frame 2 and the second frame 2 below. The first frame 2 can be fixed to the ground through a base lock, and the connecting pipe 7 in the first frame 2 is used to connect the liquid sump corresponding to the second frame 2 with the liquid sump corresponding to the first frame 2, so as to drain the liquid in the liquid sump corresponding to the second frame 2 into the liquid sump corresponding to the first frame 2, and the liquid in the liquid sump corresponding to the first frame 2 can be discharged to the outer cofferdam through the drain pipe 5. Correspondingly, the connecting pipe 7 in the second frame 2 is used to connect the liquid sump corresponding to the third frame 2 with the liquid sump corresponding to the second frame 2, so as to drain the liquid in the liquid sump corresponding to the third frame 2 into the liquid sump corresponding to the second frame 2. No other frames 2 are stacked above the third frame, so the connecting pipe 7 may not be set in the third frame 2, thereby saving the manufacturing cost of the skid-mounted liquid flow energy storage power station 1.

[0090] However, it is not limited to this, and the present disclosure can also set a connecting pipe 7 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 the top of all frames 2, the liquid storage tank corresponding to the newly added frame 2 can also be connected with 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 invention 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 is 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 is 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] In addition, it should be noted that the embodiment of the present disclosure can directly connect the liquid collection grooves corresponding to any two adjacent frames 2 through the connecting pipe 7. However, it is not limited to this. The present disclosure can also connect the connecting pipe 7 located in the lower frame 2 with the drain pipe 5 connected to the liquid collection groove corresponding to the upper frame 2, thereby realizing the connection of the liquid collection grooves corresponding to the two adjacent frames 2.

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

[0095] For example, the present disclosure may set a tilt sensor on the outer circumference of the lowest frame 2, so as to monitor the tilt degree of any other frame 2 located above in real time. The tilt sensor in the present disclosure may adopt an optical sensor, an ultrasonic sensor or the like. However, it is not limited thereto, and the present disclosure may also set a tilt sensor on the outer circumference of the lowest frame 2, or on the outer circumference of any frame 2 located in the middle. The tilt sensor in the present disclosure may also adopt other sensors besides optical sensors and ultrasonic sensors, which may be determined according to actual conditions.

[0096] In addition, the skid-mounted liquid flow energy storage power station 1 may also include an alarm device 8, which is arranged in the liquid storage tank to warn after detecting liquid leakage in the tank body 3. The staff can timely inspect and repair the tank body 3 according to the warning to reduce the loss of liquid. Among them, the alarm device 8 can use a contact sensor such as a humidity sensitive element, a circuit trigger, etc., but is not limited to this. The alarm device 8 can also use a non-contact sensor such as an optical sensor, an ultrasonic sensor, or a float switch, which can be determined according to actual conditions.

[0097] In the disclosed embodiment, the skid-mounted liquid flow energy storage power station 1 may further include a heat transfer pipe 9, which is attached to the outer surface of the tank body 3. By introducing a heat exchange medium into the heat transfer pipe 9, the liquid in the tank body 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 it is not limited thereto, and 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, and the heat exchange medium may also be water, steam, or other medium that can achieve temperature increase and temperature decrease of the tank body 3. When the heat exchange medium is water, the heat transfer pipe 9 may be connected in series with a hose to extract groundwater or water from a reservoir, thereby achieving temperature control of the liquid inside the tank body 3.

[0100] The present disclosure sets a heat transfer conduit on the surface of the tank body 3, and introduces a heat exchange medium into the heat transfer conduit according to the heat absorption and heat release of the liquid in the tank body 3, thereby controlling the liquid in the tank body 3 at an optimal working temperature, so as to improve the production efficiency and safety of the liquid flow energy storage power station, and extend the service life of the liquid flow energy storage power station. At the same time, the present disclosure uses the heat transfer pipe 9 to achieve temperature control of the liquid inside the tank body 3, reducing or avoiding the problem of huge energy consumption when using air conditioning to achieve temperature control, thereby reducing the use cost of the liquid flow energy storage power station.

[0101] In the disclosed embodiment, the heat transfer conduit may be in a spiral shape to surround the outer circumference of the tank body 3. However, the invention is not limited thereto, and the heat transfer conduit may also be in a straight tube shape or an arc shape 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 may 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 may be composed of a plurality of straight tubes and a plurality of arc-shaped connections, 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 close to the bottom of the frame 2.

[0103] In order to ensure that the heat transfer pipe can effectively heat up and cool down the liquid inside the tank body 3, the ratio of the contact area between the heat transfer pipe 9 and the outer surface of the tank body 3 to the area of ​​the outer surface of the tank body 3 in the embodiment of the present disclosure is at least 1:10. When the contact area between the heat transfer pipe 9 and the outer surface of the tank body 3 increases, the heat exchange area between the heat transfer pipe 9 and the tank body 3 also increases, thereby improving the heat exchange rate of the liquid inside the tank body 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, the maximum volume of liquid that can be filled into the tank body 3 in the present disclosure 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, it is not limited to this, and the maximum volume of liquid that can be filled into the tank body 3 can also be 70%, 90%, etc. of the volume of the tank body 3, which can be determined according to actual conditions.

[0107] The present disclosure makes the top of the heat transfer tube 9 lower than the rated filling level of the tank body 3, thereby reducing or avoiding the top of the tank body 3 (that is, the part of the tank body 3 away from the bottom of the frame 2) being in an empty-burning state for a long time, thereby improving the heating efficiency of the heat transfer tube 9 and extending the service life of the tank body 3.

[0108] In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first", "second", and "third" may explicitly or implicitly include one or more of the feature. In the description of the present disclosure, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0109] It should be noted that "upper", "lower" and the like are only used to distinguish for the convenience of description, and do not impose any directional restrictions on the embodiments of the present invention. For example, the "upper" may actually be the "lower" orientation. In the present disclosure, unless otherwise clearly specified and limited, the terms "assembly", "connection" and the like should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral whole; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium; it may 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 description with reference to the terms "some embodiments", "exemplarily", etc. means 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 may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0111] Although the embodiments of the present disclosure have been shown and described above, it is to be understood that the above embodiments are exemplary and cannot be construed 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 specification of the present disclosure shall fall within the scope covered by the patent of the present disclosure.

Claims

1. A skid-mounted liquid flow energy storage power station, characterized in that: include: A frame having a containing space; a hollow area is provided at the bottom of the frame, and the hollow area is communicated with the containing space; A tank body, which is arranged in the accommodating space; A liquid accumulation member, which is arranged in the hollow area and connected to the frame; the liquid accumulation member is provided with a liquid accumulation groove with a top opening; 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 discharge 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, and at least one liquid drainage hole is provided on the bottom wall. The liquid drainage holes correspond to the liquid drainage pipes one by one, and the liquid drainage pipes are connected with the liquid accumulation groove through the liquid 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 comprises 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 connecting pipe extends into the liquid storage 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 arranged on the outer peripheral side of at least one frame, so as to detect the tilt degree between a plurality of the frames stacked in the 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 at intervals and a bottom longitudinal beam connecting the bottoms of the two end frames; The end frame is provided with a top corner piece at the top and a bottom corner piece at the bottom, 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 comprises a connection structure, and the connection structure penetrates the first connection hole and the second connection hole on 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 material of the tank body is 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 comprises 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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