Deslagging tank for compressed air energy storage

Abstract

The utility model provides a slag removal tank for compressed air energy storage. The slag removal tank at least comprises a tank body, a controller, an electric flexible flow guide body arranged at the position close to an inlet of the tank body and an electrostatic adsorber arranged at the bottom of the tank body. Wherein the electric flexible flow guide body comprises a flow guide body main body structure made of flexible rubber; an electrostrictive grafting elastomer is embedded in the flow guide body main body structure; and the controller is electrically connected with the electrostrictive grafting elastomer. According to the slag removal tank based on the structure, the controller can be used for adjusting the current of the electrostrictive grafting elastomer, so that the electrostrictive grafting elastomer stretches or shrinks, and the main body structure of the flow guide body is driven to deform; furthermore, the flowing direction of the gas in the tank body can be correspondingly adjusted through the electric flexible flow guide body so as to adapt to diversified working condition scenes.

Description

Technical Field

[0001] The present specification relates to the technical field of compressed air energy storage, and in particular to a slag removal tank for compressed air energy storage. Background Art

[0002] Compressed air energy storage is an important energy storage method. It has attracted more and more attention due to its advantages such as large storage energy, high power density, low operating cost and long service life.

[0003] Salt cavern compressed air energy storage is a type of compressed air energy storage. Specifically, it refers to the use of electric energy to compress air and store it in underground salt caverns during the low load period of the power grid. During the peak load period of the power grid, the compressed air in the underground salt cavern is released through expansion energy release to drive the air turbine to generate electricity and obtain corresponding electricity. In the power generation stage of the above-mentioned salt cavern compressed air energy storage, high-pressure gas will flow from the underground salt cavern through a pipeline at high speed into the ground power station. However, due to the complex structure of the salt cavern cavity, there are sediments of different particle sizes (for example, salt residue) that will enter the pipe with the high-pressure and high-speed gas under the action of the vortex at the pipe mouth, which will cause wear and damage to the equipment of the ground power station, affecting the safety and stability of the power station.

[0004] In order to solve the above-mentioned problem of air carrying slag, a slag removal tank is usually introduced and set up. After the gas enters the slag removal tank, the flow rate will be significantly reduced. Correspondingly, the slag carrying capacity of the gas will also be significantly reduced. At this time, sediments such as salt slag will fall under the action of gravity, thereby effectively reducing the amount of sediment carried by the gas.

[0005] In the existing slag removal tank, rigid fan blades are mostly used to adjust the flow direction of the gas in the slag removal tank. However, the rotating devices matched with the fan blades are mostly rolling bearings. The sediment in the slag removal tank can easily fall into the rolling bearings, causing bearing wear and jamming. In addition, the sediment in the gas will also cause wear on the fan blades, affecting the service life of the fan blades. As a result, it is often impossible to continuously and efficiently adjust the flow direction of the gas in the slag removal tank, affecting the normal operation of the slag removal tank. Especially when the operation time of the slag removal tank is long, the above problems are more serious.

[0006] The existing slag removal tank cannot effectively solve the above problems. Utility Model Content

[0007] The purpose of the embodiment of the present application is to provide a slag removal tank for compressed air energy storage, which can use a controller to adjust the current of the electrostrictive grafted elastomer so that the electrostrictive grafted elastomer stretches or contracts, thereby driving the main structure of the flow guide body to deform; and then the flow direction of the gas in the tank body can be adjusted accordingly through the electric flexible flow guide body to meet a variety of working scenarios.

[0008] This specification provides a slag removal tank for compressed air energy storage, which at least includes: a tank body, a controller, an electric flexible fluid guide disposed adjacent to the inlet of the tank body, and an electrostatic adsorber disposed at the bottom of the tank body; wherein,

[0009] The electric flexible fluid guide includes a fluid guide main body structure made of flexible rubber; and an electrostrictive graft elastomer is embedded in the fluid guide main body structure;

[0010] The controller is electrically connected to the electrostrictive graft elastomer.

[0011] In one embodiment, the electric flexible fluid guide further includes: a first fixing structure and a second fixing structure;

[0012] Wherein, the first fixing structure is disposed on the left side wall of the tank body, and the second fixing structure is disposed on the right side wall of the tank body; the left and right ends of the fluid guide main body structure are respectively fixed to the first fixing structure and the second fixing structure.

[0013] In one embodiment, the fluid guide main body structure is a long plate-shaped structure.

[0014] In one embodiment, the fluid guide main body structure is a spindle-shaped structure.

[0015] In one embodiment, an electrostrictive graft elastomer is embedded in the upper surface and / or the lower surface of the fluid guide main body structure; and the extending direction of the electrostrictive graft elastomer matches the gas flow direction in the tank body.

[0016] In one embodiment, a plurality of electrostrictive graft elastomers are embedded in the upper surface of the fluid guide main body structure; and a plurality of electrostrictive graft elastomers are embedded in the lower surface of the fluid guide main body structure.

[0017] In one embodiment, the electric flexible fluid guide includes a plurality of electric flexible fluid guides;

[0018] Wherein, the included angles between the fluid guide main body structures of different electric flexible fluid guides and the horizontal direction are different.

[0019] In one embodiment, the slag removal tank further includes: a gas flow rate detector; wherein, the air flow rate detector is connected to the controller.

[0020] In one embodiment, the gas flow rate detector is disposed at the inlet position of the tank body.

[0021] In one embodiment, an auxiliary flexible fluid guide is further disposed adjacent to the outlet of the tank body.

[0022] Based on the slag removal tank for compressed air energy storage provided in this specification, it at least includes: a tank body, a controller, an electric flexible fluid guide disposed adjacent to the inlet of the tank body, and an electrostatic adsorber disposed at the bottom of the tank body; wherein, the electric flexible fluid guide includes a fluid guide main structure made of flexible rubber; and an electrostrictive graft elastomer is embedded in the fluid guide main structure; the controller is electrically connected to the electrostrictive graft elastomer. Based on the slag removal tank with the above structure, the controller can adjust the current of the electrostrictive graft elastomer, causing the electrostrictive graft elastomer to stretch or contract, driving the deformation of the fluid guide main structure; furthermore, the flow direction of the gas in the tank can be correspondingly adjusted through the electric flexible fluid guide to adapt to diverse working condition scenarios. Specifically, by introducing and using an electric flexible fluid guide in the slag removal tank to replace the fan blades that conventionally need to be equipped with rolling bearings, the wear and damage of the fluid guide by sediment such as salt slag carried by the gas in the tank can be effectively avoided, so that the effective adjustment of the gas flow direction in the tank can be continuously and efficiently achieved, ensuring the long-term normal operation of the slag removal tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments recorded in the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0024] Figure 1 Fig. shows a schematic structural composition diagram of a slag removal tank for compressed air energy storage provided in this specification;

[0025] Figure 2 Fig. shows a top view structural schematic diagram of the electric flexible fluid guide of a slag removal tank for compressed air energy storage provided in this specification;

[0026] Figure 3 Fig. shows a front view structural schematic diagram of the electric flexible fluid guide of a slag removal tank for compressed air energy storage provided in this specification;

[0027] Figure 4 Fig. shows a side view structural schematic diagram of the electric flexible fluid guide of a slag removal tank for compressed air energy storage provided in this specification;

[0028] Figure 5 Fig. shows a schematic diagram of a scenario where the electric flexible fluid guide of the slag removal tank for compressed air energy storage provided in this specification adjusts the gas flow direction in a working condition scenario;

[0029] Figure 6 Figure 1 shows a schematic diagram of a scenario where the electric flexible fluid guide of the slag removal tank for compressed air energy storage provided in this specification adjusts the gas flow direction in another working condition scenario;

[0030] Figure 7 Figure 2 shows a schematic diagram of the structural composition of another slag removal tank for compressed air energy storage provided in this specification. Detailed implementation manners

[0031] In order to enable those skilled in the art to better understand the technical solutions in this application, the following will clearly and completely describe the technical solutions in the embodiments of this application in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of this application.

[0032] Refer to Figure 1 As shown in Figure 3, this specification provides a slag removal tank for compressed air energy storage, which may at least include: a tank body, a controller, an electric flexible fluid guide disposed adjacent to the inlet of the tank body, and an electrostatic adsorber disposed at the bottom of the tank body, etc.; wherein,

[0033] The electric flexible fluid guide includes a guide fluid main structure made of flexible rubber; and an electrostrictive graft elastomer is embedded in the guide fluid main structure;

[0034] The controller is electrically connected to the electrostrictive graft elastomer.

[0035] Specifically, refer to Figure 1 As shown in Figure 4, the above-mentioned position adjacent to the inlet specifically may be a position within a range where the distance from the inlet of the tank body is less than a preset distance threshold.

[0036] The above-mentioned electric flexible fluid guide at least includes a guide fluid main structure. Among them, the above-mentioned electric flexible fluid guide is used to adjust and change the direction of air flow in the tank body to adapt to various working condition scenarios.

[0037] The above-mentioned guide fluid main structure is mainly made of flexible rubber, so that the guide fluid main structure has good deformation force and toughness. An electrostrictive graft elastomer is also embedded inside the guide fluid main structure.

[0038] The above electrostrictive grafted elastomer (ESGE) specifically refers to an elastomer composed of an elastic polymer backbone and grafted crystalline polar groups. Among them, the elastic polymer backbone forms a three-dimensional network structure, which is physically cross-linked by the crystalline polar groups. The crystalline polar groups respond to the electric field and deform, so that the ESGE exhibits electromechanical properties.

[0039] In specific implementation, an elastomer made of other electroactive polymer materials can also be used to replace the above electrostrictive grafted elastomer. Among them, the above electroactive polymer materials will have different stretching performances under the action of different charges.

[0040] The above electrostrictive grafted elastomer can be electrically connected to the controller in a wired or wireless manner.

[0041] The above controller can change the current fed into the electrostrictive grafted elastomer through electrical connection, so that the electrostrictive grafted elastomer embedded in the main structure of the fluid guide body undergoes stretching or contraction movements, and then drives the main structure of the fluid guide supported by the flexible rubber to bend upward or downward. In this way, the above electric flexible fluid guide can be used to replace the fan blade that usually needs to be equipped with rolling bearings to realize the corresponding adjustment of the flow direction of the gas filled into the tank through the inlet.

[0042] Specifically, by making the main structure of the fluid guide body bend upward through the controller, the electric flexible fluid guide can enter the small angle of attack condition. At this time, the vertical velocity component of the gas can be reduced, and the flow direction of the gas is close to horizontal, or even upwardly inclined.

[0043] Specifically, by making the main structure of the fluid guide body bend downward through the controller, the electric flexible fluid guide can enter the large angle of attack condition. At this time, the vertical velocity component of the gas can be increased, and the flow direction of the gas is downwardly inclined, or even the gas blows towards the bottom of the tank to blow out the sediment at the bottom (for example, during the slag discharge stage).

[0044] In addition, in specific implementation, the controller can also control the current value of the current fed into the electrostrictive grafted elastomer to adjust the inclination degree of the gas tilting upward or downward.

[0045] The gas with the adjusted flow direction can carry the sediment to the outlet of the tank in a relatively reasonable manner. During the flow process, the sediment carried by the gas will continuously fall due to gravity and be adsorbed by the electrostatic adsorber at the bottom. In this way, the sediment content carried by the gas flowing out of the outlet of the slag removal tank can be effectively reduced, and it can effectively avoid the sediment entering the pipe under the action of the outlet vortex with the high-pressure and high-speed gas, causing wear and damage to the ground equipment and affecting the power generation safety and stability.

[0046] Since the above-mentioned electric flexible fluid guide does not need to rely on a rotating structure that is vulnerable to wear and influence by sediment such as salt slag, it can better ensure that the gas velocity is relatively evenly distributed in the vertical direction of the slag removal tank. Therefore, based on the above-mentioned structure of the slag removal tank, it can effectively reduce the damage and influence of the sediment carried by the gas during the compressed air energy storage process, and can continuously and efficiently adjust the gas flow direction in the tank, ensuring that the slag removal tank can operate normally for a long time.

[0047] In some embodiments, referring to Figure 2 as shown, the electric flexible fluid guide may further include: a first fixing structure and a second fixing structure;

[0048] Wherein, the first fixing structure is arranged on the left side wall of the tank body, and the second fixing structure is arranged on the right side wall of the tank body; the left and right ends of the electric flexible fluid guide are respectively fixed to the first fixing structure and the second fixing structure.

[0049] Specifically, referring to Figure 2 and Figure 3 as shown, the above-mentioned first fixing structure can be fixed to the inner wall of the right side wall at a position adjacent to the tank body inlet by screws. Similarly, the above-mentioned second fixing structure can be fixed to the inner wall of the left side wall at a position adjacent to the tank body inlet by screws.

[0050] The left end of the above-mentioned fluid guide main structure is fixedly arranged at the first fixing structure; the right end of the above-mentioned fluid guide main structure is fixedly arranged at the second fixing structure.

[0051] Based on the above structure, the above-mentioned electric flexible fluid guide can be relatively firmly arranged at a position adjacent to the inlet of the tank body.

[0052] In some embodiments, the above-mentioned electric flexible fluid guide may also only include one fixing structure. Correspondingly, this fixing structure is arranged on the left side wall or the left side wall of the tank body, and one of the left end and the right end of the above-mentioned fluid guide main structure is fixed to this fixing structure. Thus, the electric flexible fluid guide can be fixed to the inner wall of the tank body at a relatively low cost.

[0053] In some embodiments, the above-mentioned fluid guide main structure may be fixed to the first fixing structure and the second fixing structure at a certain angle with the horizontal plane. Among them, the above-mentioned angle can be determined according to the specific working conditions, as well as the air flow velocity and direction.

[0054] Based on the above structure, since the fluid guide main structure forms a certain angle with the horizontal plane, the fluid guide main structure can more specifically adjust the gas flow direction and obtain a better adjustment effect.

[0055] In some embodiments, a protective film may be provided on the outer side of the above-mentioned fluid guiding body structure. Specifically, the protective film may be made of a smooth and wear-resistant material. In this way, the protective film can be used to protect the fluid guiding body structure, effectively reducing the wear on the fluid guiding body structure, and at the same time having no impact on other flows.

[0056] In some embodiments, the above-mentioned fluid guiding body structure may specifically be a long plate-shaped structure.

[0057] In some embodiments, the above-mentioned fluid guiding body structure may specifically also be a spindle-shaped structure.

[0058] Specifically, referring to Figure 3 As shown, when looking from right to left, the above-mentioned fluid guiding body structure is a spindle-shaped structure with a thickness in the middle greater than that at both sides (for example, thick in the middle and thin at both ends).

[0059] The above-mentioned spindle-shaped structure can effectively reduce the resistance to the air flow in the tank compared with other shapes, and can adjust the air flow direction with little impact on the air flow rate, obtaining a better adjustment effect for the air flow direction.

[0060] In some embodiments, in addition to the long plate-shaped structure and the spindle-shaped structure, according to specific circumstances, the above-mentioned fluid guiding body structure may also include other types of structures such as an ellipsoidal structure and a triangular plate-shaped structure.

[0061] In some embodiments, specifically, the above-mentioned electrostrictive graft elastomer may be embedded in the upper surface and / or the lower surface of the fluid guiding body structure; and the extending direction of the electrostrictive graft elastomer matches the gas flow direction in the tank.

[0062] Among them, the extending direction of the above-mentioned electrostrictive graft elastomer matching the gas flow direction in the tank can be specifically understood as: the extending direction of the electrostrictive graft elastomer can be parallel to the main direction of the gas flow direction (parallel to the horizontal plane and pointing from the inlet of the tank to the outlet).

[0063] Specifically, one or more electrostrictive graft elastomers may be embedded only in the upper surface of the fluid guiding body structure; or one or more electrostrictive graft elastomers may be embedded only in the lower surface of the fluid guiding body structure; or one or more electrostrictive graft elastomers may be embedded in the upper surface and the lower surface of the fluid guiding body structure respectively at the same time.

[0064] During specific implementation, one or more electrostrictive graft elastomers may be embedded in the fluid guiding body structure in a suitable manner according to specific circumstances and processing requirements.

[0065] In some embodiments, reference may be made to Figure 2 、Figure 3 , Figure 4 As shown, a plurality of electrostrictive graft elastomers can be embedded in the upper surface of the fluid guiding body structure; and, a plurality of electrostrictive graft elastomers can be embedded in the lower surface of the fluid guiding body structure.

[0066] Specifically, referring to Figure 4 As shown, a plurality of electrostrictive graft elastomers can be symmetrically embedded at equal intervals on the upper surface and the lower surface of the main fluid guiding structure. Among them, the extending direction of each electrostrictive graft elastomer is parallel to the main direction of the gas flow direction.

[0067] Specifically, 6 electrostrictive graft elastomers can be embedded at equal intervals on the upper surface of the main fluid guiding structure. 6 electrostrictive graft elastomers are embedded at equal intervals at corresponding positions on the lower surface of the fluid guiding body structure.

[0068] Based on the above structure, the deformation of the fluid guiding body structure can be adjusted relatively more effectively through the controller to obtain a relatively better gas flow direction adjustment effect.

[0069] During specific implementation, referring to Figure 5 As shown, when the gas flow rate in the current tank is small, for example, less than the first flow rate threshold, belonging to the small flow rate working condition, or when it is in the slag discharging stage of compressed air energy storage, the controller can be used to control the current value of the electrostrictive graft elastomer fed to the upper surface of the fluid guiding body structure to be less than that of the electrostrictive graft elastomer on the lower surface, so that the electrostrictive graft elastomer on the upper surface is relatively in an extended state (or a stretched state), and at the same time, the electrostrictive graft elastomer on the lower surface is relatively in a contracted state, thereby driving the fluid guiding body structure to bend downward, enabling the electric flexible fluid guide to enter the large angle of attack working condition, and making the air flow downward. At this time, the vertical velocity component of the gas can be increased, so that the gas flow direction is inclined downward, and even the gas blows towards the bottom of the tank to blow out the sediment at the bottom.

[0070] During specific implementation, referring to Figure 6 As shown, when the gas flow rate in the current tank is large, for example, greater than the second flow rate threshold, belonging to the large flow rate working condition, the controller can be used to control the current value of the electrostrictive graft elastomer fed to the upper surface of the fluid guiding body structure to be greater than that of the electrostrictive graft elastomer on the lower surface, so that the electrostrictive graft elastomer on the upper surface is relatively in a contracted state, and at the same time, the electrostrictive graft elastomer on the lower surface is relatively in an extended state, thereby driving the fluid guiding body structure to bend upward, enabling the electric flexible fluid guide to enter the small angle of attack working condition, and making the air flow upward. At this time, the vertical velocity component of the gas can be reduced, so that the gas flow direction is close to horizontal or even inclined upward.

[0071] In some embodiments, the electric flexible fluid guide may specifically include a plurality of electric flexible fluid guides; wherein, the included angles between the fluid guide main body structures of different electric flexible fluid guides and the horizontal direction are different.

[0072] Among them, the included angle between the fluid guide main body structure of the above-mentioned electric flexible fluid guide and the horizontal direction can be specifically determined according to the number of electric flexible fluid guides and the gas radiation angle at the tank inlet.

[0073] During specific implementation, the control modes for different electric flexible fluid guides by the controller can be the same or different.

[0074] In this way, by combining and using a plurality of different electric flexible fluid guides, the adjustment of the flow direction of relatively complex gases can be completed more efficiently and accurately.

[0075] Specifically, for example, as shown in Figure 7 the above-mentioned plurality of electric flexible fluid guides may include 2 electric flexible fluid guides, which are respectively denoted as: electric flexible fluid guide 1 and electric flexible fluid guide 2. And, the above-mentioned electric flexible fluid guide 1 and electric flexible fluid guide 2 are respectively arranged at positions adjacent to the inlet. The gas radiation angle a at the tank inlet is 120 degrees.

[0076] Then, the degree of the included angle b between the extension direction of the fluid guide main body structure of the electric flexible fluid guide 1 and the horizontal direction can be determined according to the following formula: [120 / (2 + 1)] * 1 = 40 degrees; the degree of the included angle c between the extension direction of the fluid guide main body structure of the electric flexible fluid guide 2 and the horizontal direction can be determined as: [120 / (2 + 1)] * 2 = 80 degrees.

[0077] Furthermore, the electric flexible fluid guide 1 and the electric flexible fluid guide 2 can be adjusted according to the included angle b and the included angle c respectively, so that a relatively better gas flow direction adjustment effect can be obtained when the above-mentioned electric flexible fluid guide 1 and electric flexible fluid guide 2 are combined and used.

[0078] In some embodiments, as shown in Figure 1 the slag removal tank may further include: a gas flow rate detector; wherein, the air flow rate detector is connected to the controller.

[0079] In some embodiments, the gas flow rate detector is arranged at the inlet position of the tank.

[0080] In this way, the above-mentioned gas flow rate detector can be used to collect and display to the user in a timely manner the gas flow rate at the inlet of the tank. Furthermore, the user can use the gas flow rate as one of the reference bases and more accurately control the electric flexible fluid guide to adjust the gas flow direction through the controller.

[0081] In some embodiments, the slag removal tank may specifically further include a processor. The processor is connected to the gas flow rate detector and the controller.

[0082] Correspondingly, in specific implementation, the processor may send a matching control instruction to the controller according to the gas flow rate collected by the gas flow rate detector, so as to automatically use the controller to control the electric flexible fluid guide to efficiently and timely complete the adjustment of the gas flow direction in the tank.

[0083] In some embodiments, a gas flow detector may also be provided at the inlet of the slag removal tank. The gas flow detector can be used to collect and display the gas flow rate at the tank inlet in real time. Correspondingly, the user can use the gas flow rate as one of the reference bases to more precisely control the electric flexible fluid guide to adjust the gas flow direction through the controller.

[0084] In some embodiments, an auxiliary flexible fluid guide is also provided at a position adjacent to the outlet of the tank.

[0085] The auxiliary flexible fluid guide may specifically also be an electric flexible fluid guide. The auxiliary flexible fluid guide can be electrically connected to the controller.

[0086] In specific implementation, the controller can be used to jointly control the electric flexible fluid guide at a position adjacent to the inlet and the auxiliary flexible fluid guide at a position adjacent to the outlet to cooperate with each other to more finely adjust the gas flow direction in the tank and obtain a relatively better adjustment effect.

[0087] In some embodiments, a gas flow direction detector is also provided at the outlet position of the tank; the gas flow direction detector is connected to the controller.

[0088] Correspondingly, in specific implementation, it can be determined whether the gas flow direction adjusted by the electric flexible fluid guide adjacent to the outlet detected by the gas flow direction detector provided at the outlet position meets the preset requirements. If it is determined that the preset requirements are not met, the electric flexible fluid guide can be further adjusted through the controller so that the gas flow direction in the tank meets the preset requirements.

[0089] In addition, in the case where an auxiliary flexible fluid guide is provided, the gas flow direction adjusted by the electric flexible fluid guide can be further adjusted through the auxiliary flexible fluid guide so that the gas flow direction finally passing through the tank outlet meets the preset requirements.

[0090] The deslagging tank for compressed air energy storage based on the above structure at least includes: a tank body, a controller, an electric flexible flow guide arranged at a position adjacent to the inlet of the tank body, and an electrostatic adsorber arranged at the bottom of the tank body; wherein the electric flexible flow guide includes a flow guide body structure made of flexible rubber; and an electrostrictive grafted elastomer is embedded in the flow guide body structure; the controller is electrically connected to the electrostrictive grafted elastomer. Based on the deslagging tank of the above structure, the current of the electrostrictive grafted elastomer can be adjusted by the controller, so that the electrostrictive grafted elastomer stretches or contracts, driving the flow guide body structure to deform; and then the flow direction of the gas in the tank body can be adjusted accordingly by the electric flexible flow guide to adapt to a variety of working conditions. Specifically, by introducing and using an electric flexible flow guide in the deslagging tank instead of the conventional fan blades that need to be equipped with rolling bearings, the wear and influence of the flow guide body such as salt slag carried by the gas in the tank body can be effectively avoided, so that the effective adjustment of the gas flow direction in the tank body can be achieved continuously and efficiently, ensuring that the deslagging tank can operate normally for a long time.

[0091] In a specific scenario example, the deslagging tank for compressed air energy storage provided in this specification can be used to design an electric flexible flow guide device (i.e., an electric flexible flow guide body) for a compressed air energy storage deslagging tank in an actual application scenario of compressed air energy storage.

[0092] In this scenario example, salt cave compressed air energy storage is a compressed air energy storage technology, which specifically refers to the use of electrical energy to compress air and store it in underground salt caverns during the low load period of the power grid, and release the compressed air in the underground salt caverns to drive air turbines to generate electricity during the peak load period of the power grid. Under the power generation condition, this energy storage method causes high-pressure gas to flow from the underground salt caverns through pipelines to the ground power station at high speed. Due to the complex structure of the salt cavern cavity and the presence of sediments of different particle sizes, the sediments enter the pipe with the high-pressure and high-speed gas under the action of the vortex at the pipe mouth, causing wear and damage to the ground equipment, affecting the safety and stability of power generation.

[0093] In order to solve the problem of air slag entrainment, an expansion tank (or slag removal tank) is usually set up. The air flow rate in the expansion tank is greatly reduced, and its slag entrainment capacity is reduced accordingly. The salt slag falls under the action of gravity, and the electrostatic adsorption device at the bottom of the slag tank adsorbs the slag and discharges it from the slag discharge port during slag discharge. The adjustable blades inside the slag tank control the uniformity of air flow. However, the rotating device of the rigid blade is a rolling bearing. If the salt slag falls into the bearing, it will cause the bearing to wear and get stuck, affecting the normal use of the slag tank.

[0094] Aiming at the problems of low slag removal efficiency, easy wear of mechanical blades, and poor adaptability to different flow rates of the slag removal tank for compressed air energy storage in salt caverns, an electric flexible flow guiding device for the slag removal tank of compressed air energy storage is proposed. Among them, the flow guiding device adopts an electric flexible composite material, and adjusts the angle of the electric flexible flow guiding device according to the air flow velocity and working conditions requirements. It realizes the adjustment of the working conditions of the slag settling tank on the premise of keeping the relative movement between the connecting part of the flow guiding device and the slag settling tank body unchanged. For details, please refer to Figure 1 as shown.

[0095] Specifically, the flow guiding device can be installed near the inlet inside the slag removal tank (for example, adjacent to the inlet position), where there is a fixed mechanism (for example, a fixed structure) of the electric flexible flow guiding device without rotating parts. A flow velocity meter (for example, a flow velocity detector) is also installed at the inlet position. During operation, the gas enters the slag settling tank from the inlet, the flow velocity meter returns the flow velocity data to the controller, and the controller calculates according to the flow velocity and adjusts the angle of the electric flexible flow guiding device to ensure the uniform distribution of the gas velocity in the vertical direction of the slag settling tank.

[0096] Compared with the traditional flow guiding device for the slag removal tank of compressed air energy storage, the flow guiding plate rotates around a bearing, and the bearing is installed near the inlet position. It is easy for slag to enter at the bearing rotation part, affecting the operation of the device. For the electric flexible flow guiding device for the slag removal tank of compressed air energy storage, there is no need to install and rely on a rotating mechanism at this position.

[0097] For details, please refer to Figure 1 as shown. The device is fixed to the inner wall of the slag settling tank by a fixing device (for example, a fixed structure); the main body of the electric flexible flow guiding device (for example, the main body structure of the flow guiding body) is made of flexible rubber, and an electrostrictive grafted elastomer (ESGE) is embedded inside. Among them, the electrostrictive grafted elastomer (ESGE) is distributed on both sides (for example, the upper surface and the lower surface) of the flow guiding plate, and its length changes under the influence of the charge amount.

[0098] During specific implementation, as Figure 5 shown, under small flow rate or slag discharge conditions, the upper elastomer relaxes and the lower elastomer contracts, and the rubber flow guiding plate enters the large angle of attack condition, the air flow is downward, and the vertical component of the velocity increases. The air flow blows towards the bottom plate, blowing out the sediment. As Figure 6 shown, under large flow rate conditions, the upper elastomer contracts and the lower elastomer relaxes, and the rubber flow guiding plate enters the small angle of attack condition, the air flow is upward and close to horizontal, and the vertical component of the velocity decreases.

[0099] Through the above scenario examples, it is verified that the slag removal tank for compressed air energy storage provided in this specification can reduce the wear and faults of the slag removal device on the basis of the existing compressed air energy storage slag removal device; moreover, since a composite material combining electrostrictive graft elastomer and flexible rubber is used as the main material of the deflector, it is also possible to achieve shape adjustment on the premise of keeping the surface of the deflector smooth; in addition, due to the combination of a flow meter + a controller + an electrostrictive graft elastomer, continuous control and real-time control of the device working conditions are realized. Also, based on the above slag removal tank, the deformation control of the deflector of the compressed air energy storage slag removal tank is realized by utilizing the expansion and contraction characteristics of electroactive polymers under different charges; the deflector is fixed in a non-rotating manner to avoid jamming and wear of the bearing clearance, and improve the service life of the device; the flow rate is measured by a flow meter, and the inclination angle of the deflector is calculated, so as to realize that the slag removal tank adjusts the working conditions according to the flow rate in real time, and ensure the uniformity of the velocity distribution of the air flow in the cavity.

[0100] Each embodiment in this specification is described in a progressive manner. For the same or similar parts among the embodiments, reference can be made to each other. Each embodiment focuses on the differences from other embodiments. In particular, for the system embodiment, since it is basically similar to the related embodiment, the description is relatively simple, and the relevant parts can refer to the partial description of the related embodiment. In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of this specification. In this specification, the schematic expressions 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 a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0101] The above is only the embodiment of the embodiments of this specification and is not used to limit the embodiments of this specification. For those skilled in the art, various changes and modifications can be made to the embodiments of this specification. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the embodiments of this specification shall be included within the scope of the claims of the embodiments of this specification.

Claims

1. A slag removal tank for compressed air energy storage, characterized in that, At least including: A tank body, a controller, an electric flexible fluid guide disposed adjacent to the inlet of the tank body, and an electrostatic adsorber disposed at the bottom of the tank body; wherein, The electric flexible fluid guide includes a fluid guide main structure made of flexible rubber; and electrostrictive graft elastomers are embedded in the fluid guide main structure; The controller is electrically connected to the electrostrictive graft elastomers.

2. The slag removal tank according to claim 1, wherein, The electric flexible fluid guide further includes: a first fixing structure and a second fixing structure; Wherein, the first fixing structure is disposed on the left side wall of the tank body, and the second fixing structure is disposed on the right side wall of the tank body; the left and right ends of the fluid guide main structure are respectively fixed to the first fixing structure and the second fixing structure.

3. The slag removal tank according to claim 1, characterized in that, The fluid guide main structure is a long plate-shaped structure.

4. The slag removal tank according to claim 1, characterized in that, The fluid guide main structure is a spindle-shaped structure.

5. The slag removal tank according to claim 3 or 4, characterized in that, Electrostrictive graft elastomers are embedded in the upper surface and / or the lower surface of the fluid guide main structure; and the extending direction of the electrostrictive graft elastomers matches the gas flow direction in the tank body.

6. The slag removal tank according to claim 5, characterized in that, A plurality of electrostrictive graft elastomers are embedded in the upper surface of the fluid guide main structure; and a plurality of electrostrictive graft elastomers are embedded in the lower surface of the fluid guide main structure.

7. The slag removal tank according to claim 1, characterized in that, The electric flexible fluid guide includes a plurality of electric flexible fluid guides; Wherein, the angles between the fluid guide main structures of different electric flexible fluid guides and the horizontal direction are different.

8. The slag removal tank according to claim 1, characterized in that, The slag removal tank further includes: a gas flow rate detector; wherein, the air flow rate detector is connected to the controller.

9. The slag removal tank according to claim 8, characterized in that, The gas flow rate detector is disposed at the inlet position of the tank body.

10. The slag removal tank according to claim 1, characterized in that, An auxiliary flexible fluid guide is further disposed adjacent to the outlet of the tank body.

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