Conveying device and energy storage system

Abstract

The invention relates to the technical field of energy storage, and provides a conveying device and an energy storage system. The conveying device comprises a conveying pipe and a sleeve assembly. The conveying pipe is used for conveying cooling liquid, and at least part of the length of the conveying pipe in the conveying direction is an electrically-insulating first isolation section. The sleeve assembly is provided with a containing cavity and a second isolation section with electrical insulation performance, the conveying pipe is arranged in the containing cavity in a penetrating mode so that the first isolation section can be located in the containing cavity, the second isolation section is arranged on the peripheral side of the first isolation section in a surrounding mode, and the second isolation section and the first isolation section are arranged at intervals. The sleeve assembly can protect the outer wall of the conveying pipe, so that the outer wall of the whole conveying pipe is isolated from the outside, and the outer wall of the conveying pipe is prevented from making contact with the external environment. The second isolation section is arranged on the peripheral side of the first isolation section in a surrounding mode, and the second isolation section and the first isolation section are arranged in a spaced mode, so that the conveying pipe and the sleeve assembly can achieve the insulation effect.

Description

Technical Field

[0001] This application relates to the field of energy storage technology, and in particular to a transmission device and an energy storage system. Background Technology

[0002] In related technologies, energy storage systems combine multiple modular energy storage units to form a scalable, reliable, and efficient system, with water channels connecting each unit. In high-voltage energy storage scenarios, the insulation design of energy storage systems with water channels is a significant challenge, and the impact of the external environment on insulation performance must also be considered in the design. Summary of the Invention

[0003] In view of this, embodiments of this application aim to provide a conveying device and an energy storage system that can ensure the electrical clearance and creepage distance between energy storage units even when the energy storage system is placed in an environment with large temperature differences.

[0004] A first aspect of this application provides a conveying device, comprising:

[0005] A delivery pipe for conveying coolant, wherein at least a portion of the length of the delivery pipe along the delivery direction is an electrically insulating first isolation section;

[0006] A sleeve assembly having a receiving cavity and an electrically insulating second isolation section, wherein the delivery tube passes through the receiving cavity such that the first isolation section is located within the receiving cavity, and the second isolation section surrounds the periphery of the first isolation section and is spaced apart from the first isolation section.

[0007] The conveying device provided in this application embodiment has a sleeve assembly that protects the outer wall of the conveying pipe, isolating the entire outer wall of the conveying pipe from the outside environment and preventing it from contacting the external environment. A second isolation section is provided around the first isolation section and spaced apart from it, enabling the conveying pipe and the sleeve assembly to provide electrical insulation. This prevents condensation from forming continuously on the first and second isolation sections after the outer periphery of the sleeve assembly comes into contact with the external environment, thus ensuring the conveying pipe and the sleeve assembly can function as insulation.

[0008] In some embodiments, the sleeve assembly includes:

[0009] A sleeve, through which the delivery pipe passes, the sleeve forming the second isolation section;

[0010] The first flange assembly is connected to one end of the sleeve and one end of the delivery pipe, respectively;

[0011] The second flange assembly is connected to the other end of the sleeve and the delivery pipe, respectively, and the first flange assembly, the second flange assembly and the sleeve surround to form the receiving cavity.

[0012] The first flange assembly and the second flange assembly facilitate connection to external pipelines and other structures.

[0013] In some embodiments, one end of the delivery pipe has a first convex ring, and the first flange assembly includes:

[0014] The first mounting flange is fitted onto one end of the sleeve and is sealed to the sleeve.

[0015] The first clamping flange is sleeved on one end of the conveying pipe and is located inside the first convex ring along the conveying direction;

[0016] The first end face flange is sleeved on one end of the conveying pipe and located outside the first convex ring along the conveying direction. The first end face flange is fastened to the first clamping flange and the first mounting flange respectively, so that the first end face flange is sealed to the first convex ring and the first mounting flange respectively.

[0017] In this way, the first flange assembly, the delivery pipe, and the sleeve can be securely connected. Furthermore, the first end flange is sealed to both the first convex ring and the first mounting flange, preventing leakage of dry gas from the containment cavity.

[0018] In some embodiments, the first flange assembly includes:

[0019] The first sealing element is provided between the first end face flange and the first convex ring, and between the first end face flange and the first mounting flange, so that the first end face flange and the first convex ring are sealed together, and the first end face flange and the first mounting flange are sealed together.

[0020] By setting the first sealing element, the sealing effect between the first flange assembly and the delivery pipe can be improved, thereby enhancing the sealing effect on the receiving cavity and preventing the leakage of dry gas inside the receiving cavity.

[0021] In some embodiments, the first seal includes:

[0022] The first sealing gasket is disposed between the first end face flange and the first convex ring;

[0023] The first sealing ring is disposed between the first end face flange and the first mounting flange.

[0024] In some embodiments, the other end of the delivery pipe has a second convex ring, and the second flange assembly includes:

[0025] The second mounting flange is fitted onto the other end of the sleeve and is sealed to the sleeve.

[0026] The second clamping flange is fitted onto the other end of the conveying pipe and is located inside the second convex ring along the conveying direction;

[0027] The transition bushing has a first shoulder, a second shoulder, and a third shoulder with successively decreasing outer diameters. The transition bushing is sleeved on the other end of the conveying pipe, located outside the second convex ring along the conveying direction. The first shoulder fits against the inner wall of the sleeve. The transition bushing is fastened to the second clamping flange so that the transition bushing is sealed to the second convex ring.

[0028] A transition flange is fitted onto the second shoulder and fastened to the second mounting flange to ensure a sealing connection between the transition flange and the second mounting flange.

[0029] The second end face flange is fitted onto the third shoulder, and the second end face flange is fastened to the transition flange so that the second end face flange and the transition flange are sealed together.

[0030] The transition bushing has a first shoulder, a second shoulder, and a third shoulder with successively decreasing outer diameters. This allows the first shoulder to fit snugly against the inner wall of the sleeve, the second shoulder to be fitted onto the delivery pipe, and the third shoulder to facilitate connection of the liquid inlet to the outside. This prevents the second mounting flange from exceeding the length of the delivery pipe along the delivery direction due to manufacturing errors, which would affect the connection between the liquid inlet and the external structure.

[0031] In some embodiments, the second flange assembly includes:

[0032] The second sealing element is provided between the transition bushing and the second convex ring, between the transition flange and the second end face flange, between the transition flange and the second mounting flange, and between the second shoulder and the transition flange, so that the transition bushing and the second convex ring are sealed together, the transition flange and the second end face flange are sealed together, the transition flange and the second mounting flange are sealed together, and the second shoulder and the transition flange are sealed together.

[0033] By incorporating a second seal, the sealing effect between the second flange assembly and the delivery pipe can be improved, enhancing the sealing effect on the receiving cavity and preventing leakage of dry gas within the cavity. This also improves the sealing effect between the transition sleeve and the second convex ring, between the transition flange and the second end face flange, between the transition flange and the second mounting flange, and between the second shoulder and the transition flange. This reduces the possibility of gas leaking into the external environment through the second convex ring and the transition sleeve, from between the transition flange and the second mounting flange; or through the second convex ring, the transition sleeve, and the transition flange, from between the second end face flange and the third shoulder, or between the second end face flange and the transition flange.

[0034] In some embodiments, the second seal includes:

[0035] The second sealing gasket is disposed between the transition bushing and the second convex ring;

[0036] A third sealing gasket is disposed between the transition flange and the second end face flange;

[0037] A second sealing ring is disposed between the transition flange and the second mounting flange;

[0038] The third sealing ring is disposed between the second shoulder and the transition flange.

[0039] In some embodiments, the first clamping flange and the second clamping flange are both spaced apart from the conveying pipe, and the first clamping flange and the second clamping flange are both fitted to the sleeve.

[0040] The inner walls of the first and second clamping flanges have gaps with the conveying pipe, facilitating the installation of the first and second clamping flanges by fitting them onto the outer wall of the conveying pipe. The outer walls of the first and second clamping flanges fit snugly against the inner wall of the sleeve, and after installation, the inner wall of the sleeve can limit the movement of the first and second clamping flanges.

[0041] In some embodiments, the first convex ring is spaced apart from the sleeve to avoid fasteners connecting the first convex ring and the first end face flange; the second convex ring is spaced apart from the sleeve to avoid fasteners connecting the second convex ring and the transition bushing.

[0042] This avoids damage to the first and / or second convex rings by the fasteners during installation.

[0043] In some embodiments, the first mounting flange, the second mounting flange, the first clamping flange, the second clamping flange, the transition bushing, the transition flange, the first end face flange, and the second end face flange are all made of metal.

[0044] Metallic materials have high tensile strength, can withstand large tensile forces, provide reliable mechanical connections, and prevent the connection parts from coming apart under high pressure or vibration.

[0045] In some embodiments, the first flange assembly and the second flange assembly have the same structure.

[0046] This simplifies the structure and facilitates production.

[0047] In some embodiments, both ends of the conveying pipe are bent, and the bent ends have a first flange. Both the first flange assembly and the second flange assembly include:

[0048] The third mounting flange is fitted onto one end of the sleeve and is sealed to the sleeve.

[0049] A retaining ring sleeve has a second flange and is fitted onto one end of the conveying pipe, wherein the second flange is sealed to the first flange;

[0050] A third end face flange is disposed at one end of the conveying pipe and is fastened to the retaining ring sleeve and the third mounting flange respectively, so that the third end face flange is sealed to the third mounting flange, the retaining ring sleeve and the conveying pipe respectively, and the retaining ring sleeve is sealed to the conveying pipe.

[0051] The third end face flange and the third mounting flange are fastened together, and the third end face flange and the retaining ring sleeve are fastened together, which can securely connect the retaining ring sleeve, the third end face flange, and the delivery pipe. The third mounting flange and the sleeve, the second flange and the first flange are sealed together, and the third end face flange is sealed together with the third mounting flange, the retaining ring sleeve, and the delivery pipe respectively. The retaining ring sleeve is sealed together with the delivery pipe, which can prevent the leakage of dry gas in the containment cavity.

[0052] In some embodiments, the third end face flange has a first fastening hole for fastening connection, the third mounting flange has a second fastening hole for fastening connection, and the retaining ring sleeve has a third fastening hole for fastening connection, wherein the diameter of the first fastening hole is larger than the diameter of the second fastening hole and the third fastening hole, respectively.

[0053] Understandably, due to potential errors in manufacturing or installation processes, the delivery pipe may deviate from its designed position, causing the first and second fastening holes, and the first and third fastening holes, to not be perfectly aligned. The diameter of the first fastening hole is larger than the diameters of the second and third fastening holes, respectively, which reduces the possibility that errors may prevent fasteners from passing through the first and second fastening holes, and the first and third fastening holes, for secure fastening.

[0054] In some embodiments, both the first flange assembly and the second flange assembly include:

[0055] The third sealing element is provided between the third end face flange and the end face of the conveying pipe, between the third end face flange and the third mounting flange, between the retaining ring sleeve and the third end face flange, and between the first flange and the second flange, so as to seal the connection between the third end face flange and the conveying pipe. The third end face flange is sealed to the third mounting flange and the retaining ring sleeve respectively, and the retaining ring sleeve is sealed to the conveying pipe.

[0056] By incorporating a third sealing element, the sealing effect between the first flange assembly, the second flange assembly, and the delivery pipe is improved, enhancing the sealing effect on the receiving cavity and preventing leakage of dry gas within the cavity. This enhances the sealing effect between the end faces of the third end flange and the delivery pipe, between the third end flange and the third mounting flange, between the retaining ring and the third end flange, and between the first flange and the second flange. This prevents gas from flowing into the external environment through the space between the first and second flanges, or through the space between the retaining ring and the third flange's third convex ring, and from the space between the delivery pipe and the third end flange, or from the first fastening hole corresponding to the retaining ring; or from flowing into the external environment through the space between the third mounting flange and the third end flange, and from the first fastening hole corresponding to the third mounting flange.

[0057] In some embodiments, the third seal includes:

[0058] A fourth sealing gasket is disposed between the third end face flange and the end face of the conveying pipe;

[0059] The fourth sealing ring is provided between the third end face flange and the third mounting flange, between the retaining ring sleeve and the third end face flange, and between the first flange and the second flange.

[0060] In some embodiments, the third mounting flange, the retaining ring sleeve, and the third end face flange are all made of metal.

[0061] Metallic materials have high tensile strength, can withstand large tensile forces, provide reliable mechanical connections, and prevent the connection parts from coming apart under high pressure or vibration.

[0062] In some embodiments, the sleeve is made of electrically insulating ceramic.

[0063] Ceramics have very high dielectric strength, can maintain their insulation properties under high voltage conditions, are not easily affected by environmental factors and age, and can maintain stable performance.

[0064] In some embodiments, the outer periphery of the sleeve is formed as an umbrella skirt structure.

[0065] This increases the path length along the insulation surface, thus increasing the creepage distance. Increasing the creepage distance helps prevent flashover in harsh environments such as high humidity and pollution, improving the reliability of the connected structure. It also enhances the mechanical strength of the bushing assembly, improving structural stability.

[0066] In some embodiments, the sleeve includes:

[0067] The core sleeve has electrical insulation properties;

[0068] The umbrella skirt component is electrically insulating and is fitted around the outer periphery of the core sleeve, fitting snugly against the core sleeve.

[0069] The core sleeve, the first flange assembly, and the second flange assembly form an enclosure to create a receiving cavity. The umbrella skirt can provide a certain degree of protection and reduce the impact of external mechanical damage on the core sleeve.

[0070] In some embodiments, the core sleeve is made of epoxy resin.

[0071] Epoxy resin possesses excellent electrical insulation properties, as well as high tensile, compressive, and shear strength. It can be formulated into composite materials with good toughness, capable of withstanding impacts and vibrations without easily breaking. Simultaneously, epoxy resin exhibits good adhesive properties, facilitating tight bonding with umbrella skirt components.

[0072] In some embodiments, the umbrella skirt is made of silicone.

[0073] Silicone has good electrical insulation properties, as well as good softness and elasticity. It can maintain its shape after bending and stretching, so that the umbrella skirt can be stretched and deformed during installation to fit tightly onto the core sleeve.

[0074] In some embodiments, the core sleeve is press-fitted to both the first flange assembly and the second flange assembly.

[0075] This improves the connection strength between the core sleeve and the first flange assembly and the second flange assembly, and enhances the sealing performance within the cavity.

[0076] In some embodiments, the umbrella skirt is bonded to the core sleeve.

[0077] This improves the fit between the umbrella skirt and the core sleeve, reducing the possibility that the relative displacement between the umbrella skirt and the core sleeve could cause gaps between them, leading to contact between the surface of the core sleeve and the external environment, condensation on the outer wall of the core sleeve, and the core sleeve failing to provide insulation.

[0078] In some embodiments, both the first flange assembly and the second flange assembly have vent ports that communicate with the receiving cavity for conveying dry gas.

[0079] The vent is located on the sleeve, such as the core sleeve, and the vent interface is connected to the vent. The vent interface can be connected to the external structure.

[0080] In some embodiments, the number of vent ports on the first flange assembly and the second flange assembly are one, two, or more, respectively.

[0081] The number of venting ports on the first flange assembly and the second flange assembly is unlimited and can be adaptively designed according to the connection requirements of the connected structure and the planning of the venting route.

[0082] In some embodiments, the delivery pipe is made of an electrically insulating polymer, and the delivery pipe forms the first isolation section.

[0083] This makes the conveying pipe insulating, enabling it to maintain good performance and stability under high load and high pressure conditions.

[0084] In some embodiments, the polymer is PVDF or PA.

[0085] The conveying pipe is made of PVDF, which provides excellent electrical insulation, high mechanical strength and toughness, and the ability to withstand significant stress and impact loads. It can be easily processed using injection molding, extrusion, blow molding, and other methods. Alternatively, the conveying pipe can be made of PA, which also provides excellent electrical insulation, high tensile strength and impact resistance, and maintains structural integrity under significant stress. It can also be easily processed using injection molding, extrusion, blow molding, and other methods.

[0086] A second aspect of this application provides an energy storage system, including:

[0087] The conveying device described in any of the above claims;

[0088] At least two energy storage units are provided, with at least two or more energy storage units spaced apart from each other, and the cooling pipes in two adjacent energy storage units are connected by the conveying device so that the cooling pipes are in communication with the conveying pipes.

[0089] In some embodiments, the liquid supply pipe on the foundation is connected to the cooling pipe in the adjacent energy storage unit via the conveying device, so that the liquid supply pipe is connected to the cooling pipe in the adjacent energy storage unit via the conveying pipe of the conveying device.

[0090] Because the delivery pipe has a first insulating section and the bushing assembly has a second insulating section, the cooling pipes in adjacent energy storage units can have different potentials. It is understood that the energy storage units can be arranged vertically or horizontally. When the energy storage units are arranged vertically, the bottom layer refers to the energy storage units closest to the foundation, i.e., those connected to the foundation; when the energy storage units are arranged horizontally, the bottom layer refers to those connected to the foundation.

[0091] In some embodiments, the energy storage unit further includes a vent pipe for conveying fire-fighting gas, and vent pipes in adjacent energy storage units are connected through the conveying device to communicate with the receiving cavity.

[0092] In some embodiments, the gas supply pipe on the foundation is connected to the vent pipe in the adjacent energy storage unit via the conveying device, so that the gas supply pipe is in communication with the vent pipe in the adjacent energy storage unit through the receiving cavity of the conveying device.

[0093] Because the delivery pipe has a first insulating section and the bushing assembly has a second insulating section, the vent pipes in adjacent energy storage units can have different potentials.

[0094] In some embodiments, multiple energy storage units are spaced apart vertically, the conveying device is connected between adjacent energy storage units, and the second isolation section is arranged vertically.

[0095] The energy storage units are arranged vertically. In both indoor and outdoor environments, the transmission devices between adjacent energy storage units ensure safe electrical clearances and creepage distances between them.

[0096] In some embodiments, the energy storage system further includes a protective cover fitted over the conveying device.

[0097] When the energy storage system is located outdoors, the protective cover protects the delivery device, enabling it to function as an insulator. Preventing rain or condensation on the outside of the bushing assembly, which could reduce electrical clearances, is also important.

[0098] The energy storage system provided in this application embodiment has the same beneficial effects as the above-described transmission device. Attached Figure Description

[0099] Figure 1 This is a structural schematic diagram of the conveying device in one embodiment of this application from a first perspective.

[0100] Figure 2 for Figure 1 A schematic diagram of the AA cross-sectional structure of the conveying device shown;

[0101] Figure 3 for Figure 2 Enlarged view of point B;

[0102] Figure 4 for Figure 2 Enlarged view of point C;

[0103] Figure 5 for Figure 1 A structural schematic diagram of the conveying device from a second perspective;

[0104] Figure 6 for Figure 1 A structural schematic diagram of the conveying device from a third perspective;

[0105] Figure 7 This is a schematic diagram of the conveying device in the second embodiment of this application;

[0106] Figure 8 This is a structural schematic diagram of the conveying device in the third embodiment of this application from a first perspective.

[0107] Figure 9 for Figure 8 A structural schematic diagram of the conveying device from a second perspective;

[0108] Figure 10 for Figure 9 A schematic diagram of the DD cross-sectional structure of the conveying device shown;

[0109] Figure 11 for Figure 10 Enlarged view of point E;

[0110] Figure 12 This is a schematic diagram of the energy storage system in one embodiment of this application.

[0111] Explanation of reference numerals in the attached figures

[0112] Conveying device 100; Conveying pipe 10; Liquid inlet 10a; First isolation section 101; First convex ring 11; Second convex ring 12; First flange 13; Sleeve assembly 20; Receiving cavity 20a; Vent interface 20b; Air inlet pipe 20b1; First mounting plate 20b2; Vent 20c; Clearance opening 20d; Second isolation section 201; Sleeve 21; Core sleeve 211; Umbrella skirt 212; First flange assembly 22; First mounting flange 221; Second mounting plate 2211; Flange body 2212; First clamping flange 222; First end face flange 223; First sealing element 224; First sealing gasket 2241; First sealing ring 2242; Second flange assembly 23; Second mounting flange 231; Second Compression flange 232; transition bushing 233; first shoulder 2331; second shoulder 2332; third shoulder 2333; transition flange 234; second end face flange 235; second seal 236; second gasket 2361; third gasket 2362; second sealing ring 2363; third sealing ring 2364; third mounting flange 24; second fastening hole 24a; retaining ring sleeve 25; third fastening hole 25a; second flange 251; third end face flange 26; first fastening hole 26a; third convex ring 261; third seal 27; fourth gasket 271; fourth sealing ring 272; energy storage system 1000; energy storage unit 200; cooling pipe 210; vent pipe 220; insulator 300. Detailed Implementation

[0113] The embodiments of this application will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this application, but should not be used to limit the scope of this application.

[0114] In the description of the embodiments of this application, it should be noted that the terms "conveyor direction," "up," "down," "front," "rear," "left," "right," "vertical," "horizontal," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0115] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral 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. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0116] In the embodiments of this application, unless otherwise expressly specified and limited, the first feature "on" the second feature may be in direct contact with the first feature and the second feature, or indirect contact between the first feature and the second feature through an intermediate medium.

[0117] In the description of this specification, references to terms such as "some embodiments," "exemplary," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the embodiments of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine the different embodiments or examples described in this application, as well as the features of those different embodiments or examples.

[0118] In related technologies, energy storage systems combine multiple energy storage units. Since these units have different potentials, direct water connection is not possible; insulating components are required, and specific electrical clearances and creepage distances must be maintained. When the water pipe wall temperature is lower than the ambient temperature, condensation will form on the pipe wall, compromising the safe electrical clearances and creepage distances between the energy storage units. Electrical clearance refers to the shortest spatial distance measured between two conductive components or between a conductive component and the protective interface of the equipment. In other words, it is the shortest distance that allows for insulation through air while ensuring stable and safe electrical performance. Increasing creepage distance helps prevent flashover in harsh environments such as high humidity and pollution, improving the reliability of the connected structure. Creepage distance refers to the charged area between two conductive components measured along the insulating surface, where the insulating material around the conductor becomes electrically charged under different operating conditions. Increasing creepage distance can reduce the failure rate due to insulation failure and improve operational reliability.

[0119] In view of this, please refer to Figures 1-7 This application provides a conveying device 100, which can be used in an energy storage system to enable adjacent energy storage units in the energy storage system to have different potentials. The conveying device 100 includes a conveying pipe 10 and a sleeve assembly 20. The conveying pipe 10 is used to convey coolant, and at least a portion of the length of the conveying pipe 10 along the conveying direction is an electrically insulating first isolation section 101; the sleeve assembly 20 has a receiving cavity 20a and an electrically insulating second isolation section 201, the conveying pipe 10 passing through the receiving cavity 20a such that the first isolation section 101 is located in the receiving cavity 20a, and the second isolation section 201 surrounds the periphery of the first isolation section 101 and is spaced apart from the first isolation section 101.

[0120] The delivery pipe 10 is used to deliver coolant. To ensure that adjacent energy storage units in the energy storage system have different potentials, the coolant is a non-conductive liquid with insulating properties, such as deionized water, transformer oil, or fluorinated liquid. The delivery pipe 10 has at least two inlets 10a, at least one as an inlet and at least one as an outlet. For example, please refer to... Figures 2-4 The conveying pipe 10 has two liquid inlets 10a located at both ends, one as an inlet and the other as an outlet.

[0121] The extension direction of the delivery pipe 10 is not limited and can be adapted to the structural requirements of the connection. The position of the liquid inlet 10a can also be reasonably arranged according to the connection requirements. For example, please refer to... Figure 2 The delivery pipe 10 can be laid in a straight line; or please refer to Figures 8-10 The delivery pipe 10 can be C-shaped.

[0122] It is understood that the first isolation segment 101 can be any segment of the conveying pipe 10. For example, the entire length of the conveying pipe 10 is electrically insulated, or a segment of the conveying pipe 10 located in the middle is electrically insulated. For example, the conveying pipe 10 can be a separate assembly or a one-piece molding.

[0123] The conveying pipe 10 can be selected from a material that has insulating properties and exhibits good performance and stability under high load and high pressure conditions. For example, the conveying pipe 10 is made of an electrically insulating polymer, forming a first isolation section 101. For instance, the polymer is PVDF (Polyvinylidene fluoride) or PA (Polyamide). Using PVDF as the material for the conveying pipe 10 provides good electrical insulation properties, high mechanical strength and toughness, and the ability to withstand large stress and impact loads. It can be processed through various methods such as injection molding, extrusion, and blow molding, making it easy to form. Using PA as the material for the conveying pipe 10 provides good electrical insulation properties, high tensile strength and impact resistance, and the ability to maintain structural integrity under high stress. It can also be processed through various methods such as injection molding, extrusion, and blow molding, making it easy to form.

[0124] The sleeve assembly 20 protects the outer wall of the delivery pipe 10, isolating the entire outer wall of the delivery pipe 10 from the outside environment. This prevents condensation from forming on the outer wall of the delivery pipe 10 after it comes into contact with the external environment, thus preventing the delivery pipe 10 from losing its insulation performance. The form of the sleeve assembly 20 is not limited, as long as it can meet the isolation requirements of the outer wall of the delivery pipe 10. For example, the sleeve assembly 20 is a one-piece molded part that wraps around the delivery pipe 10, isolating the entire outer wall of the delivery pipe 10 from the outside environment, leaving only the two end liquid inlets 10a open to communicate with the outside environment for the delivery of coolant.

[0125] For example, in order to allow the liquid in the delivery pipe 10 to communicate with the outside, the sleeve assembly 20 is provided with a clearance port 20d communicating with the liquid inlet 10a, and the number of clearance ports 20d is the same as the number of liquid inlets 10a. The sleeve assembly 20 can be adaptively designed according to the structural requirements of the connected structure. For example, the sleeve assembly 20 has a first flange assembly 22 and a second flange assembly 23, both of which have clearance ports 20d.

[0126] The receiving cavity 20a forms a receiving space for the delivery pipe 10. The receiving cavity 20a can contain dry gas, such as air or fire-fighting gas. The dry gas can be sealed within the receiving cavity 20a or can flow through it. The fire-fighting gas, for example, is an inert gas used for fire suppression in the energy storage system. The bushing assembly 20 can be provided with an interface for communication between the dry gas and the outside environment, such as a vent interface 20b. The number of vent interfaces 20b can be two or more.

[0127] The extension direction of the sleeve assembly 20 is not limited and can be adapted to the structural requirements of the connected structure. The position of the vent interface 20b can also be reasonably arranged according to the connection requirements. For example, please refer to... Figure 6 The sleeve assembly 20 is arranged in a straight line, and there are two vent ports 20b, one as an air inlet and the other as an air outlet; or please refer to Figure 7 There are four vent ports 20b, two of which are used as air inlets and two as air outlets.

[0128] The location of the vent connection 20b is not limited and can be arranged reasonably according to connection requirements. It can be located circumferentially or on the end face of the sleeve assembly 20. For example, please refer to... Figure 6 There are two vent ports 20b, located on the same side of the conveying direction; please refer to [link / reference]. Figure 7 There are four ventilation ports 20b, two of which are located on the same side of the conveying direction, and the other two are located on the opposite side of the conveying direction. Here, X represents the conveying direction.

[0129] The second isolation segment 201 can be any segment of the bushing assembly 20. For example, the entire length of the bushing assembly 20 is electrically insulating, or a segment of the bushing assembly 20 located in the middle is electrically insulating.

[0130] The conveying device 100 provided in this application embodiment has a sleeve assembly 20 that protects the outer wall of the conveying pipe 10, isolating the entire outer wall of the conveying pipe 10 from the outside world and preventing the outer wall of the conveying pipe 10 from contacting the external environment. A second isolation section 201 is provided around the periphery of the first isolation section 101 and spaced apart from the first isolation section 101, so that the conveying pipe 10 and the sleeve assembly 20 can play an electrical insulating role, so as to prevent the outer periphery of the sleeve assembly 20 from contacting the external environment and condensing continuously on the first isolation section 101 and the second isolation section 201, which would prevent the conveying pipe 10 and the sleeve assembly 20 from failing to play an insulating role.

[0131] For example, the outer periphery of the bushing assembly 20 is formed as an umbrella skirt structure, which increases the path length along the insulating surface and increases the creepage distance. Increasing the creepage distance helps prevent flashover under harsh environmental conditions such as high humidity and pollution, improving the reliability of the connected structure. At the same time, it can enhance the mechanical strength of the bushing assembly 20 and improve structural stability.

[0132] In some embodiments, please refer to Figures 2-4 The sleeve assembly 20 includes a sleeve 21, a first flange assembly 22, and a second flange assembly 23. The delivery pipe 10 passes through the sleeve 21, and the sleeve 21 forms a second isolation section 201. The first flange assembly 22 is connected to one end of the sleeve 21 and the delivery pipe 10, respectively. The second flange assembly 23 is connected to the other end of the sleeve 21 and the delivery pipe 10, respectively. The first flange assembly 22, the second flange assembly 23, and the sleeve 21 form a receiving cavity 20a.

[0133] The first flange assembly 22 and the second flange assembly 23 facilitate connection to external pipelines and other structures. It is understood that the structures of the first flange assembly 22 and the second flange assembly 23 may be the same or different. Specifically, the design can be adapted to the connection requirements of the structure to be connected. For example, please refer to... Figure 10 The first flange assembly 22 and the second flange assembly 23 have the same structure, which simplifies the structure and facilitates production. Please refer to [link / reference]. Figure 2 The first flange assembly 22 and the second flange assembly 23 have different structures so that after the first flange assembly 22 is installed with the conveying pipe 10, the second flange assembly 23 can be installed from the outside, so as to avoid the second flange assembly 23 being unable to be installed due to structural interference.

[0134] Exemplarily, the sleeve 21 can be a one-piece molded part, with its outer periphery formed into an umbrella-shaped structure. In other embodiments, the sleeve 21 can be manufactured in parts. For example, please refer to... Figure 2 The sleeve 21 includes a core sleeve 211 and a skirt member 212. The core sleeve 211 is electrically insulating; the skirt member 212 is electrically insulating and is fitted around the outer periphery of the core sleeve 211, fitting snugly against it. The core sleeve 211, the first flange assembly 22, and the second flange assembly 23 form an enclosure cavity 20a. The skirt member 212 provides a certain degree of protection, reducing the impact of external mechanical damage on the core sleeve 211.

[0135] In some embodiments, the sleeve 21 is made of electrically insulating ceramic. Ceramic has very high dielectric strength, maintains its insulating properties under high voltage conditions, is not easily affected by environmental factors and ages, and maintains stable performance. It is understood that ceramic is relatively brittle; when ceramic is selected as the material for the sleeve 21, its impact resistance can be improved through processing techniques. Exemplarily, the sleeve 21 can be a one-piece molded part made of ceramic.

[0136] In some embodiments, the core sleeve 211 is made of epoxy resin. Epoxy resin has good electrical insulation properties and high tensile strength, compressive strength, and shear strength, and can be made into a composite material with good toughness, which can withstand impact and vibration without easily breaking. At the same time, epoxy resin has good adhesive properties, which facilitates a tight fit with the umbrella skirt 212.

[0137] In some embodiments, the umbrella skirt 212 is made of silicone. Silicone has good electrical insulation properties, as well as good softness and elasticity, and can maintain its shape after bending and stretching, so that the umbrella skirt 212 can be stretched and deformed during installation to fit tightly onto the core sleeve 211.

[0138] In some embodiments, the core sleeve 211 is press-fitted to the first flange assembly 22 and the second flange assembly 23, respectively. This improves the connection strength between the core sleeve 211 and the first flange assembly 22 and the second flange assembly 23, thereby enhancing the sealing performance within the receiving cavity 20a.

[0139] In some embodiments, the umbrella skirt 212 is bonded to the core sleeve 211. This improves the fit between the umbrella skirt 212 and the core sleeve 211, reducing the possibility that gaps may form between them due to relative displacement, causing the surface of the core sleeve 211 to come into contact with the external environment and condensate on its outer wall, thus preventing the core sleeve 211 from fulfilling its insulating function.

[0140] In some embodiments, please refer to Figure 2 and Figure 3 Both the first flange assembly 22 and the second flange assembly 23 have vent ports 20b, which are connected to the receiving cavity 20a and are used to deliver dry gas, such as fire-fighting gas. A vent port 20c is located on the sleeve 21, such as the core sleeve 211, and the vent ports 20b are connected to the vent port 20c. The vent ports 20b can be connected to external structures.

[0141] For example, the vent 20b includes a vent pipe 20b1 and a first mounting plate 20b2. The first mounting plate 20b2 increases the contact area with the external structure, improving the sealing effect. It is understood that, to increase electrical clearance, the vent 20b is positioned as close to both ends as possible, increasing the length of the second insulation section. To avoid the possibility of interference between the first mounting plate 20b2 and the first end face flange 223, the vent pipe 20b1 is given a certain length.

[0142] For example, please refer to Figure 3 The first flange assembly 22 includes a first mounting flange 221, which has a second mounting plate 2211 and a flange body 2212. An air inlet pipe 20b1 is formed on the flange body 2212, and the flange body 2212 is fitted onto a sleeve 21, such as a core sleeve 211. A clearance groove is formed between the second mounting plate 2211 and the air inlet pipe 20b1. When the first end face flange 223 and the second mounting plate 2211 are fastened together by fasteners, the clearance groove prevents interference between the air inlet pipe 20b1 and the fasteners.

[0143] The number of vent ports 20b on the first flange assembly 22 and the second flange assembly 23 is unlimited and can be adaptively designed according to the connection requirements of the connected structures and the planning of the ventilation routes. For example, the number of vent ports 20b on the first flange assembly 22 and the second flange assembly 23 may be one, two, or more, respectively. The number of vent ports 20b is the same as the number of vent outlets 20c. For example, please refer to... Figure 6 There are two vent ports 20b, located on the same side of the conveying direction; please refer to [link / reference]. Figure 7 There are four ventilation ports 20b, two of which are located on the same side of the conveying direction, and the other two are located on the opposite side of the conveying direction. Here, X represents the conveying direction.

[0144] In some embodiments, please refer to Figure 3 One end of the conveying pipe 10 has a first convex ring 11. The first flange assembly 22 includes a first mounting flange 221, a first clamping flange 222, and a first end face flange 223. The first mounting flange 221 is fitted onto one end of the sleeve 21 and is sealed to the sleeve 21. The first clamping flange 222 is fitted onto one end of the conveying pipe 10 and is located inside the first convex ring 11 along the conveying direction. The first end face flange 223 is fitted onto one end of the conveying pipe 10 and is located outside the first convex ring 11 along the conveying direction. The first end face flange 223 is fastened to the first clamping flange 222 and the first mounting flange 221 respectively, so that the first end face flange 223 is sealed to the first convex ring 11 and the first mounting flange 221 respectively.

[0145] The first convex ring 11 is used to position the first clamping flange 222 and the first end face flange 223, which are respectively positioned on both sides of the first convex ring 11 along the conveying direction. The first end face flange 223 and the first clamping flange 222 are fastened together, and the first end face flange 223 and the first mounting flange 221 are fastened together, thereby securing the first flange assembly 22 to the conveying pipe 10. In this way, the first flange assembly 22, the conveying pipe 10, and the sleeve 21 can be securely connected. Furthermore, the first end face flange 223 is sealed to both the first convex ring 11 and the first mounting flange 221, preventing leakage of dry gas from the receiving cavity 20a. Exemplarily, the first end face flange 223 and the first clamping flange 222 can be fastened together using fasteners such as bolts; the first end face flange 223 and the first mounting flange 221 can also be fastened together using fasteners such as bolts. For example, the first mounting flange 221, the first clamping flange 222, and the first end face flange 223 all have mounting holes for mounting fasteners. The mounting hole on the first end face flange 223 for fixing and mounting to the first clamping flange 222 is a blind hole, the mounting hole on the first clamping flange 222 for fixing and mounting to the first end face flange 223 is a through hole, and the mounting holes on the first end face flange 223 and the first mounting flange 221 for fixing and mounting to the first end face flange 223 are both through holes.

[0146] It is understandable that the fastening connection can be achieved by fasteners, or by either having a bayonet and the other having a buckle, with the buckle engaging the bayonet to achieve the fastening connection.

[0147] It is understandable that a sealed connection can achieve a tight fit between structures, for example, through precision machining, or by setting a sealing element between the structures.

[0148] In some embodiments, please refer to Figure 3 The first flange assembly 22 includes a first seal 224. The first seal 224 is provided between the first end face flange 223 and the first convex ring 11, and between the first end face flange 223 and the first mounting flange 221, so that the first end face flange 223 and the first convex ring 11 are sealed together, and the first end face flange 223 and the first mounting flange 221 are sealed together.

[0149] By setting the first sealing element 224, the sealing effect between the first flange assembly 22 and the delivery pipe 10 is improved, the sealing effect on the receiving cavity 20a is enhanced, and the leakage of dry gas in the receiving cavity 20a is prevented.

[0150] This improves the sealing effect between the first end face flange 223 and the first convex ring 11, and between the first end face flange 223 and the first mounting flange 221, thereby reducing the possibility of gas flowing out into the external environment through the space between the first convex ring 11 and the first end face flange 223 and between the first end face flange 223 and the first mounting flange 221.

[0151] The first seal 224 can be a gasket or a sealing ring. Specifically, it can be selected based on the connection relationship and the suitability for sealing performance. For example, please refer to... Figure 3 The first sealing element 224 includes a first sealing gasket 2241 and a first sealing ring 2242. The first sealing gasket 2241 is disposed between the first end face flange 223 and the first convex ring 11; the first sealing ring 2242 is disposed between the first end face flange 223 and the first mounting flange 221. Alternatively, the first sealing element includes a first sealing gasket and a first sealing ring, with the first sealing ring disposed between the first end face flange and the first convex ring; or the first sealing element is disposed between the first end face flange and the first mounting flange.

[0152] In some embodiments, please refer to Figure 4 The other end of the conveying pipe 10 has a second convex ring 12. The second flange assembly 23 includes a second mounting flange 231, a second clamping flange 232, a transition sleeve 233, a transition flange 234, and a second end face flange 235. The second mounting flange 231 is fitted onto the other end of the sleeve 21 and is sealed to the sleeve 21. The second clamping flange 232 is fitted onto the other end of the conveying pipe 10 and is located inside the second convex ring 12 along the conveying direction. The transition sleeve 233 has a first shoulder 2331, a second shoulder 2332, and a third shoulder 2333 with successively decreasing outer diameters. The transition sleeve 233 is fitted onto the other end of the conveying pipe 10 and is located outside the second convex ring 12 along the conveying direction. The first shoulder 2331 fits against the inner wall of the sleeve 21. The transition sleeve 233 is fastened to the second clamping flange 232 so that the transition sleeve 233 is sealed to the second convex ring 12; the transition flange 234 is sleeved on the second shoulder 2332 and fastened to the second mounting flange 231 so that the transition flange 234 is sealed to the second mounting flange 231; the second end face flange 235 is sleeved on the third shoulder 2333 and fastened to the transition flange 234 so that the second end face flange 235 is sealed to the transition flange 234.

[0153] The transition bushing 233 has a first shoulder 2331, a second shoulder 2332, and a third shoulder 2333 with successively decreasing outer diameters. This allows the first shoulder 2331 to fit against the inner wall of the sleeve 21, the second shoulder to be fitted onto the conveying pipe 10, and the third shoulder 2333 to facilitate connection to the liquid inlet 10a and external communication. This prevents the second mounting flange 231 from exceeding the length of the conveying pipe 10 along the conveying direction due to manufacturing errors, which would affect the connection between the liquid inlet 10a and the external structure.

[0154] Understandably, please refer to Figures 2-4 The conveying pipe 10 is arranged in a straight line, and the first flange assembly 22 and the second flange assembly 23 are located at both ends of the conveying pipe 10. When installing the conveying device 100, the first flange assembly 22 is installed first. After installation, the fasteners for fixing the second end face flange 235 can only be installed from the outside. When the thickness of the second clamping flange 232 is small, if the second end face flange 235 is connected to the second clamping flange 232, the thickness of the second clamping flange 232 needs to be increased to avoid insufficient structural strength and damage by the fasteners during installation. In this application, the second end face flange 235 is fastened to the transition flange 234, which allows for the installation of fasteners from the outside. Fastening the second end face flange 235 to the transition flange 234 facilitates installation and eliminates the need to design an increase in the thickness of the second clamping flange 232.

[0155] For example, the second mounting flange 231, the second clamping flange 232, the second end face flange 235, the transition flange 234, and the first shoulder 2331 all have mounting holes for fasteners. Specifically, the mounting hole on the transition flange 234 for fixing to the second end face flange 235 is a blind hole; the mounting hole on the second end face flange 235 for fixing to the transition flange 234 is a through hole; the mounting holes on the second mounting flange 231 and the transition flange 234 for fixing are both through holes; and the mounting holes on the first shoulder 2331 and the second clamping flange 232 for fixing are both through holes.

[0156] The second convex ring 12 is used to position the second clamping flange 232 and the transition sleeve 233, which are respectively positioned on both sides of the second convex ring 12 along the conveying direction. The transition sleeve 233 is fastened to the second clamping flange 232, the second end face flange 235 is fastened to the transition flange 234, and the transition flange 234 is fastened to the second mounting flange 231, thereby securing the second flange assembly 23 to the conveying pipe 10. In this way, the second flange assembly 23, the conveying pipe 10, and the sleeve 21 can be securely connected. Furthermore, the sealing connection between the transition sleeve 233 and the second convex ring 12, the sealing connection between the transition flange 234 and the second mounting flange 231, and the sealing connection between the second end face flange 235 and the transition flange 234 prevents leakage of dry gas from the receiving cavity 20a. For example, the second end face flange 235 and the transition flange 234 can be fastened together by fasteners such as bolts; the transition flange 234 and the second mounting flange 231 can be fastened together by fasteners such as bolts.

[0157] In some embodiments, please refer to Figure 4 The second flange assembly 23 includes a second seal 236. The second seal 236 is provided between the transition sleeve 233 and the second convex ring 12, between the transition flange 234 and the second end face flange 235, between the transition flange 234 and the second mounting flange 231, and between the second shoulder 2332 and the transition flange 234, so that the transition sleeve 233 and the second convex ring 12 are sealed together, the transition flange 234 and the second end face flange 235 are sealed together, the transition flange 234 and the second mounting flange 231 are sealed together, and the second shoulder 2332 and the transition flange 234 are sealed together.

[0158] By setting the second seal 236, the sealing effect between the second flange assembly 23 and the delivery pipe 10 can be improved, the sealing effect on the receiving cavity 20a can be improved, and the leakage of dry gas in the receiving cavity 20a can be prevented.

[0159] This improves the sealing effect between the transition sleeve 233 and the second convex ring 12, between the transition flange 234 and the second end face flange 235, between the transition flange 234 and the second mounting flange 231, and between the second shoulder 2332 and the transition flange 234. This reduces the possibility of gas flowing out to the external environment through the second convex ring 12 and the transition sleeve 233, from between the transition flange 234 and the second mounting flange 231; or through the second convex ring 12, the transition sleeve 233 and the transition flange 234, from between the second end face flange 235 and the third shoulder 2333 or between the second end face flange 235 and the transition flange 234.

[0160] The second seal 236 can be a gasket or a sealing ring. Specifically, it can be selected based on the connection relationship and suitability for sealing performance. For example, please refer to... Figure 4 The second sealing element 236 includes a second sealing gasket 2361, a third sealing gasket 2362, a second sealing ring 2363, and a third sealing ring 2364. The second sealing gasket 2361 is disposed between the transition sleeve 233 and the second convex ring 12; the third sealing gasket 2362 is disposed between the transition flange 234 and the second end face flange 235; the second sealing ring 2363 is disposed between the transition flange 234 and the second mounting flange 231; and the third sealing ring 2364 is disposed between the second shoulder 2332 and the transition flange 234. Alternatively, the second sealing element includes a second sealing gasket, a third sealing gasket, a second sealing ring, and a third sealing ring. The second sealing ring is disposed between the transition sleeve and the second convex ring; the third sealing ring is disposed between the transition flange and the second end face flange; the second sealing gasket is disposed between the transition flange and the second mounting flange; and the third sealing gasket is disposed between the second shoulder and the transition flange.

[0161] In some embodiments, please refer to Figure 3 and Figure 4 The first clamping flange 222 and the second clamping flange 232 are both spaced apart from the conveying pipe 10, and the first clamping flange 222 and the second clamping flange 232 are both fitted to the sleeve 21.

[0162] The inner walls of the outer walls of the first clamping flange 222 and the second clamping flange 232 have gaps with the conveying pipe 10, facilitating the fitting of the first clamping flange 222 and the second clamping flange 232 onto the outer wall of the conveying pipe 10 during installation. The outer walls of the first clamping flange 222 and the second clamping flange 232 fit against the inner wall of the sleeve 21, and after installation, the inner wall of the sleeve 21 can limit the movement of the first clamping flange 222 and the second clamping flange 232.

[0163] In some embodiments, please refer to Figure 3 and Figure 4 The first convex ring 11 is spaced apart from the sleeve 21 to avoid the fasteners connecting the first convex ring 11 and the first end face flange 223; the second convex ring 12 is spaced apart from the sleeve 21 to avoid the fasteners connecting the second convex ring 12 and the transition bushing 233.

[0164] This avoids damage to the first protruding ring 11 and / or the second protruding ring 12 by the fasteners during installation.

[0165] For example, please refer to Figures 2-4The first convex ring 11 and the second convex ring 12 are at the same distance from both ends of the conveying pipe 10. The gap between the second convex ring 12 and the inner wall of the sleeve 21 is the same as the gap between the first convex ring 11 and the inner wall of the conveying pipe 10. Thus, when the first flange assembly 22 and the second flange assembly 23 are different, either end can be installed with the first flange assembly 22 and the other end with the second flange assembly 23 during installation, so as to avoid repeated work caused by installation errors.

[0166] The first mounting flange 221, second mounting flange 231, first clamping flange 222, second clamping flange 232, transition sleeve 233, transition flange 234, first end face flange 223, and second end face flange 235 can be selected from materials with good rigidity and strength, while meeting sealing requirements. For example, the first mounting flange 221, second mounting flange 231, first clamping flange 222, second clamping flange 232, transition sleeve 233, transition flange 234, first end face flange 223, and second end face flange 235 are all made of metal. Metal materials have high tensile strength, can withstand large tensile forces, provide reliable mechanical connections, and prevent the connection from detaching under high pressure or vibration. Furthermore, using metal materials allows for use with seals to provide good sealing performance and prevent coolant or fire-fighting gas leakage. Simultaneously, using metal materials allows for fastening connections with fasteners such as bolts, resulting in high connection strength, easy disassembly and reinstallation, and convenient maintenance and inspection. For example, the metal material can be stainless steel, carbon steel, or alloy steel.

[0167] In some embodiments, please refer to Figures 8-11 Both ends of the conveying pipe 10 are bent, and the bent ends have a first flange 13. The first flange assembly 22 and the second flange assembly 23 both include a third mounting flange 24, a retaining ring sleeve 25, and a third end face flange 26. The third mounting flange 24 is fitted onto one end of the sleeve 21 and is sealed to the sleeve 21. The retaining ring sleeve 25 has a second flange 251 and is fitted onto one end of the conveying pipe 10. The second flange 251 is sealed to the first flange 13. The third end face flange 26 is located at one end of the conveying pipe 10 and is fastened to the retaining ring sleeve 25 and the third mounting flange 24 respectively, so that the third end face flange 26 is sealed to the third mounting flange 24, the retaining ring sleeve 25, and the conveying pipe 10 respectively, and the retaining ring sleeve 25 is sealed to the conveying pipe 10.

[0168] The third end flange 26 and the third mounting flange 24 are fastened together, and the third end flange 26 and the retaining ring sleeve 25 are fastened together, which can fasten the retaining ring sleeve 25, the third end flange 26 and the delivery pipe 10 together. The third mounting flange 24 is sealed to the sleeve 21, the second flange 251 is sealed to the first flange 13, and the third end flange 26 is sealed to the third mounting flange 24, the retaining ring sleeve 25 and the delivery pipe 10 respectively. The retaining ring sleeve 25 is sealed to the delivery pipe 10, which can prevent the dry gas in the receiving cavity 20a from leaking.

[0169] At least a portion of the third end flange 26 and the retaining ring sleeve 25 are engaged between the sleeve 21 and the delivery pipe 10 to close the receiving cavity 20a. For example, please refer to... Figure 11 The third end flange 26 has a third protruding ring 261 formed in the receiving cavity 20a. The inner wall of the third protruding ring 261 fits against the outer wall of the retaining ring sleeve 25. The outer wall of the third protruding ring 261 has a gap with the inner wall of the third mounting flange 24. When the third end flange 26 is installed after the conveying pipe 10 is installed, if there is a manufacturing or installation error in the length of the conveying pipe 10, the third end flange 26 can have space to adjust its position so that the third protruding ring 261 is aligned with the second protruding ring 12 of the conveying pipe 10, so as to facilitate the fastening of the third mounting flange 24 and the second protruding ring.

[0170] In some embodiments, please refer to Figure 11 The third end flange 26 has a first fastening hole 26a for fastening connection, the third mounting flange 24 has a second fastening hole 24a for fastening connection, and the retaining ring sleeve 25 has a third fastening hole 25a for fastening connection. The diameter of the first fastening hole 26a is larger than the diameters of the second fastening hole 24a and the third fastening hole 25a, respectively.

[0171] Understandably, due to potential errors in manufacturing or installation processes, the delivery pipe 10 may deviate from its designed preset position, causing the first fastening hole 26a and the second fastening hole 24a, and the first fastening hole 26a and the third fastening hole 25a, to not be perfectly aligned. The diameter of the first fastening hole 26a is larger than the diameters of the second fastening hole 24a and the third fastening hole 25a, respectively, which reduces the possibility that errors may prevent fasteners from passing through the first fastening hole 26a and the second fastening hole 24a, and the first fastening hole 26a and the third fastening hole 25a for fastening.

[0172] For example, the first fastening hole 26a is a smooth hole, and the second fastening hole 24a and the third fastening hole 25a are both threaded holes, so that fasteners such as bolts can pass through the first fastening hole 26a and be threadedly connected to the second fastening hole 24a and the third fastening hole 25a respectively.

[0173] In some embodiments, please refer to Figure 11Both the first flange assembly 22 and the second flange assembly 23 include a third seal 27. The third seal 27 is provided between the end face flange 26 and the end face of the conveying pipe 10, between the third end face flange 26 and the third mounting flange 24, between the retaining ring sleeve 25 and the third end face flange 26, and between the first flange 13 and the second flange 251, so that the third end face flange 26 and the conveying pipe 10 are sealed together. The third end face flange 26 is sealed together with the third mounting flange 24 and the retaining ring sleeve 25 respectively. The retaining ring sleeve 25 is sealed together with the conveying pipe 10.

[0174] By setting the third seal 27, the sealing effect between the first flange assembly 22, the second flange assembly 23 and the delivery pipe 10 is improved, the sealing effect on the receiving cavity 20a is enhanced, and the leakage of dry gas in the receiving cavity 20a is prevented.

[0175] This improves the sealing effect between the end faces of the third end flange 26 and the delivery pipe 10, between the third end flange 26 and the third mounting flange 24, between the retaining ring sleeve 25 and the third end flange 26, and between the first flange 13 and the second flange 251. This prevents gas from flowing out into the external environment through the first flange 13 and the second flange 251, or through the retaining ring sleeve 25 and the third flange of the third end flange 26, from the delivery pipe 10 and the third end flange 26, or from the first fastening hole 26a corresponding to the retaining ring sleeve 25; or through the third mounting flange 24 and the third end flange 26, from the first fastening hole 26a corresponding to the third mounting flange 24.

[0176] The third seal 27 can be a gasket or a sealing ring. Specifically, it can be selected based on the connection relationship and suitability for sealing performance. For example, please refer to... Figure 11 The third sealing element 27 includes a fourth sealing gasket 271 and a fourth sealing ring 272. The fourth sealing gasket 271 is disposed between the end face flange 26 and the end face of the delivery pipe 10; the fourth sealing ring 272 is disposed between the third end face flange 26 and the third mounting flange 24, between the retaining ring sleeve 25 and the third end face flange 26, and between the first flange 13 and the second flange 251. In other embodiments, the third sealing element includes a fourth sealing gasket and a fourth sealing ring. The fourth sealing ring is disposed between the end face flange and the end face of the delivery pipe; the fourth sealing gasket is disposed between the third end face flange and the third mounting flange, between the retaining ring sleeve and the third end face flange, and between the first flange and the second flange.

[0177] The third mounting flange 24, retaining ring sleeve 25, and third end face flange 26 can be selected from materials with good rigidity and strength that meet sealing requirements. For example, the third mounting flange 24, retaining ring sleeve 25, and third end face flange 26 are all made of metal. Metal materials have high tensile strength, can withstand large tensile forces, provide reliable mechanical connections, and prevent the connection from detaching under high pressure or vibration. Furthermore, using metal materials allows for the use of seals to provide good sealing performance and prevent coolant or fire-fighting gas leakage. At the same time, using metal materials allows for fastening connections with fasteners such as bolts, resulting in high connection strength, easy disassembly and reinstallation, and convenient maintenance and inspection. For example, stainless steel, carbon steel, or alloy steel can be selected as the metal material.

[0178] Please see Figures 2-4 The installation process of the conveying device 100 will be described below using a specific embodiment of this application as an example:

[0179] The first mounting flange 221 and the second mounting flange 231 are pressed onto the sleeve 21; the first sealing ring 2242 is fitted onto the sleeve 21; the second sealing ring 2363 is fitted onto the sleeve 21; the third sealing gasket 2362 is fitted onto the third shoulder 2333; and the third sealing ring 2364 is fitted onto the second shoulder 2332.

[0180] The first clamping flange 222 and the second clamping flange 232 are fitted onto the conveying pipe 10. Specifically, both the first clamping flange 222 and the second clamping flange 232 can be semi-ring spliced ​​flanges. The first sealing gasket 2241 is fitted onto the conveying pipe 10. The second sealing gasket 2361 is fitted onto the second shoulder 2332. The first end face flange 223 and the transition bushing 233 are fitted onto the conveying pipe 10. The first sealing ring 2242 is located between the first mounting flange 221 and the first end face flange 223, and the second sealing gasket 2361 is located on the second convex ring 11. Between the first shoulder 2331 and the first clamping flange 222 and the first end face flange 223 are installed on both sides of the first convex ring 11, the first sealing gasket 2241 is located between the first end face flange 223 and the first clamping flange 222, the second clamping flange 232 and the transition bushing 233 are installed on both sides of the second convex ring 12; fasteners are sequentially inserted into the corresponding mounting holes of the first clamping flange 222 and the first end face flange 223 to fasten them together; fasteners are inserted into the corresponding mounting holes of the second clamping flange 232 and the transition bushing 233 to fasten them together.

[0181] The assembled first mounting flange 221, second mounting flange 231 and sleeve 21 are fitted onto the conveying pipe 10 from one end of the second convex ring 11, so that the first mounting flange 221 and the first end face flange 223 are mated.

[0182] The transition flange 234 is fitted onto the second shoulder 2332. The third sealing gasket 2362 is located between the second shoulder 2332 and the second end face flange 235. The second sealing ring 2363 is located between the second mounting flange 231 and the transition flange 234. The third sealing ring 2364 is located between the transition flange 234 and the second shoulder 2332. The second end face flange 235 is fitted onto the third shoulder 2333. Fasteners are sequentially inserted into the corresponding mounting holes of the first end face flange 223 and the first mounting flange 221 to fasten them together. Fasteners are sequentially inserted into the corresponding mounting holes of the transition flange 234 and the second mounting flange 231 to fasten them together. Fasteners are sequentially inserted into the corresponding mounting holes of the second end face flange 235 and the transition flange 234 to fasten them together.

[0183] In this way, the conveying pipe 10 and the sleeve assembly 20 can be fixedly connected, which can seal the receiving cavity 20a and the conveying pipe 10, and enable the conveying device 100 to play a good insulating role.

[0184] A second aspect of this application provides an energy storage system 1000. Please refer to [link to relevant documentation]. Figure 12 The energy storage system 1000 includes at least two energy storage units 200 and a conveying device 100 as described in any one of the embodiments of this application. The at least two energy storage units 200 are spaced apart from each other, and the cooling pipes 210 in adjacent energy storage units 200 are connected by the conveying device 100 so that the cooling pipes 210 are in communication with the conveying pipe 10. Exemplarily, the energy storage system 1000 can be a high-voltage direct-connected energy storage system.

[0185] It is understood that "at least two" in this application refers to a quantity range of two or more, and "at least two" appearing in different descriptive positions does not necessarily indicate the same specific quantity. The total number of all energy storage units 200 in the energy storage system 1000 is N1, N1≥2, among which multiple energy storage units 200 are spaced apart from each other, and the number of spaced-apart energy storage units 200 is N2, N2≥2, where N1≥N2. That is to say, among all the energy storage units 200 in the energy storage system 1000, some energy storage units 200 may be spaced apart from each other, or all energy storage units 200 may be spaced apart from each other.

[0186] In some embodiments, the liquid supply pipe on the foundation is connected to the cooling pipe 210 in the adjacent energy storage unit 200 via the conveying device 100, so that the liquid supply pipe is connected to the cooling pipe 210 in the adjacent energy storage unit 200 via the conveying pipe 10 of the conveying device 100.

[0187] Because the delivery pipe 10 has a first insulating section and the bushing assembly 20 has a second insulating section, the cooling pipes 210 in adjacent energy storage units 200 can have different potentials. It is understood that the energy storage units 200 can be arranged vertically or horizontally. When the energy storage units 200 are arranged vertically, the bottom layer of energy storage units refers to those closest to the foundation, i.e., those connected to the foundation; when the energy storage units 200 are arranged horizontally, the bottom layer of energy storage units refers to those connected to the foundation.

[0188] In some embodiments, the energy storage unit 200 further includes a vent pipe 220 for conveying fire-fighting gas, and the vent pipes 220 in adjacent energy storage units 200 are connected by a conveying device 100 so that the vent pipe 220 is in communication with the receiving cavity 20a.

[0189] In some embodiments, the gas supply pipe on the foundation is connected to the vent pipe 220 in the adjacent energy storage unit 200 via the delivery device 100, so that the gas supply pipe is connected to the vent pipe 220 in the adjacent energy storage unit 200 via the receiving cavity 20a of the delivery device 100.

[0190] Because the delivery pipe 10 has a first insulating section and the bushing assembly 20 has a second insulating section, the vent pipes 220 in adjacent energy storage units 200 can have different potentials.

[0191] In some embodiments, please refer to Figure 12 Multiple energy storage units 200 are arranged at intervals in the vertical direction, and a conveying device 100 is connected between adjacent energy storage units 200. The second isolation section 201 is arranged in the vertical direction.

[0192] The energy storage units 200 are arranged vertically. In both indoor and outdoor environments, the transmission devices 100 between adjacent energy storage units 200 can ensure safe electrical clearance and creepage distance between the energy storage units 200.

[0193] For example, adjacent energy storage units 200 are connected by insulators 300, and energy storage units 200 adjacent to the foundation are connected to the foundation by composite insulators 300.

[0194] In other embodiments not shown, multiple energy storage units 200 are spaced apart in the horizontal direction, a conveying device 100 is connected between adjacent energy storage units 200 on the left and right, and a second isolation section 201 is arranged in the horizontal direction.

[0195] In some embodiments, the energy storage system 1000 further includes a protective cover fitted over the conveying device 100. When the energy storage system 1000 is located outdoors, the protective cover protects the conveying device 100, enabling it to function as an insulator. Preventing rain or condensation on the outside of the sleeve assembly 20 reduces electrical clearance. When the energy storage unit 200 includes a cooling pipe 210, the conveying device 100 can electrically isolate the cooling pipes 210 in two adjacent energy storage units 200 with different potentials; when the energy storage unit 200 includes a vent pipe 220, the conveying device 100 can electrically isolate the vent pipes 220 in two adjacent energy storage units 200 with different potentials.

[0196] The above description is merely a preferred embodiment of this application and is not intended to limit the application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A conveying device, characterized in that, include: A delivery pipe for conveying coolant, wherein at least a portion of the length of the delivery pipe along the delivery direction is an electrically insulating first isolation section; A sleeve assembly having a receiving cavity and an electrically insulating second isolation section, wherein the delivery tube passes through the receiving cavity such that the first isolation section is located within the receiving cavity, and the second isolation section surrounds the periphery of the first isolation section and is spaced apart from the first isolation section.

2. The conveying device according to claim 1, characterized in that, The sleeve assembly includes: A sleeve, through which the delivery pipe passes, the sleeve forming the second isolation section; The first flange assembly is connected to one end of the sleeve and one end of the delivery pipe, respectively; The second flange assembly is connected to the other end of the sleeve and the delivery pipe, respectively, and the first flange assembly, the second flange assembly and the sleeve surround to form the receiving cavity.

3. The conveying device according to claim 2, characterized in that, One end of the conveying pipe has a first convex ring, and the first flange assembly includes: The first mounting flange is fitted onto one end of the sleeve and is sealed to the sleeve. The first clamping flange is sleeved on one end of the conveying pipe and is located inside the first convex ring along the conveying direction; The first end face flange is sleeved on one end of the conveying pipe and located outside the first convex ring along the conveying direction. The first end face flange is fastened to the first clamping flange and the first mounting flange respectively, so that the first end face flange is sealed to the first convex ring and the first mounting flange respectively.

4. The conveying device according to claim 3, characterized in that, The other end of the conveying pipe has a second protruding ring, and the second flange assembly includes: The second mounting flange is fitted onto the other end of the sleeve and is sealed to the sleeve. The second clamping flange is fitted onto the other end of the conveying pipe and is located inside the second convex ring along the conveying direction; The transition bushing has a first shoulder, a second shoulder, and a third shoulder with successively decreasing outer diameters. The transition bushing is sleeved on the other end of the conveying pipe, located outside the second convex ring along the conveying direction. The first shoulder fits against the inner wall of the sleeve. The transition bushing is fastened to the second clamping flange so that the transition bushing is sealed to the second convex ring. A transition flange is fitted onto the second shoulder and fastened to the second mounting flange to ensure a sealing connection between the transition flange and the second mounting flange. The second end face flange is fitted onto the third shoulder, and the second end face flange is fastened to the transition flange so that the second end face flange and the transition flange are sealed together.

5. The conveying device according to claim 4, characterized in that, Both the first and second clamping flanges are spaced apart from the conveying pipe, and both are fitted into the sleeve; and / or, The first convex ring is spaced apart from the sleeve to avoid the fasteners connecting the first convex ring and the first end face flange; the second convex ring is spaced apart from the sleeve to avoid the fasteners connecting the second convex ring and the transition bushing.

6. The conveying device according to claim 2, characterized in that, Both ends of the conveying pipe are bent, and the bent ends have a first flange. Both the first flange assembly and the second flange assembly include: The third mounting flange is fitted onto one end of the sleeve and is sealed to the sleeve. A retaining ring sleeve has a second flange and is fitted onto one end of the conveying pipe, wherein the second flange is sealed to the first flange; A third end face flange is disposed at one end of the conveying pipe and is fastened to the retaining ring sleeve and the third mounting flange respectively, so that the third end face flange is sealed to the third mounting flange, the retaining ring sleeve and the conveying pipe respectively, and the retaining ring sleeve is sealed to the conveying pipe.

7. The conveying device according to claim 6, characterized in that, The third end face flange has a first fastening hole for fastening connection, the third mounting flange has a second fastening hole for fastening connection, and the retaining ring sleeve has a third fastening hole for fastening connection. The diameter of the first fastening hole is larger than the diameter of the second fastening hole and the third fastening hole, respectively.

8. The conveying device according to any one of claims 2 to 7, characterized in that, The sleeve is made of electrically insulating ceramic; and / or, the outer periphery of the sleeve is formed as an umbrella skirt structure.

9. The conveying device according to any one of claims 2 to 7, characterized in that, The sleeve includes: The core sleeve is electrically insulating. The umbrella skirt component is electrically insulating and is fitted around the outer periphery of the core sleeve, fitting snugly against the core sleeve.

10. The conveying device according to claim 9, characterized in that, The core sleeve is made of epoxy resin; and / or the skirt is made of silicone.

11. The conveying device according to claim 9, characterized in that, The core sleeve is press-fitted to the first flange assembly and the second flange assembly respectively; and / or, the umbrella skirt is bonded to the core sleeve.

12. The conveying device according to any one of claims 2 to 7, characterized in that, Both the first flange assembly and the second flange assembly have vent ports, which are connected to the receiving cavity and used to deliver dry gas.

13. The conveying device according to claim 12, characterized in that, The number of vent ports on the first flange assembly and the second flange assembly are one, two, or more, respectively.

14. The conveying device according to any one of claims 1 to 7, characterized in that, The conveying pipe is made of an electrically insulating polymer and forms the first isolation section.

15. The conveying device according to claim 14, characterized in that, The polymer is PVDF or PA.

16. An energy storage system, characterized in that, include: The conveying device according to any one of claims 1 to 15; At least two energy storage units are provided, with the at least two energy storage units spaced apart from each other, and the cooling pipes in two adjacent energy storage units are connected by the conveying device so that the cooling pipes are in communication with the conveying pipes.

17. The energy storage system according to claim 16, characterized in that, The liquid supply pipe on the foundation is connected to the cooling pipe in the adjacent energy storage unit through the conveying device, so that the liquid supply pipe is connected to the cooling pipe in the adjacent energy storage unit through the conveying pipe of the conveying device.

18. The energy storage system according to claim 16, characterized in that, The energy storage unit also includes a vent pipe for conveying fire-fighting gas. The vent pipes in adjacent energy storage units are connected through the conveying device so that the vent pipes are in communication with the receiving cavity.

19. The energy storage system according to claim 18, characterized in that, The gas supply pipe on the foundation is connected to the vent pipe in the adjacent energy storage unit through the conveying device, so that the gas supply pipe is connected to the vent pipe in the adjacent energy storage unit through the receiving cavity of the conveying device.

20. The energy storage system according to claim 16, characterized in that, Multiple energy storage units are arranged at intervals along the vertical direction, the conveying device is connected between adjacent energy storage units, and the second isolation section is arranged along the vertical direction.

21. The energy storage system according to claim 16, characterized in that, The energy storage system also includes a protective cover, which is fitted onto the conveying device.

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