Water conveying pipe connecting piece for pumped storage unit and pumped storage unit

Abstract

The utility model provides a water conveying pipe connecting piece for a pumped storage unit and the pumped storage unit, and belongs to the technical field of pumped storage devices. The water conveying pipe connecting piece for the pumped storage unit comprises two flange plates fixedly connected to the outer ends of the adjacent water conveying pipes correspondingly and mounting mechanisms used for fixedly connecting the two flange plates, each mounting mechanism comprises a rubber protection part and a fixing part, and the multiple mounting mechanisms are annularly and evenly distributed on the two flange plates; mounting openings corresponding to the mounting mechanisms are formed in the flange plates, the rubber protection parts are embedded into the mounting openings and are connected into the rubber protection parts in a penetrating mode through fixing parts, and the rubber protection parts and the two flange plates are fixedly connected at the same time. The connecting stability and the sealing performance between the adjacent water conveying pipes can be effectively improved, vibration and damage caused by water flow impact are reduced, and the service life of equipment is prolonged.

Description

Technical Field

[0001] The present application relates to the technical field of pumped storage devices, and in particular to a water pipe connector for a pumped storage unit and a pumped storage unit. Background Art

[0002] Pumped-storage hydropower units, as highly efficient energy storage and regulation devices, are widely used in power systems. They utilize excess electricity during periods of low power load to pump water from a lower reservoir to a higher reservoir for storage. During peak power periods, water from the higher reservoir is released to drive turbines for power generation, thereby meeting power demand, balancing grid loads, and improving the efficiency and stability of power systems.

[0003] In pumped-storage hydropower units, the water pipeline is a key component connecting the reservoir and the turbine. The reliability and sealing of its connection directly impact the unit's operational safety and efficiency. Prior art typically uses flanges and bolts to directly connect adjacent water pipelines. However, due to the high-speed flow of water within the pipeline, the impact and vibration generated are significant. Long-term operation can cause repeated impact and vibration at the flange and bolt connections, which can easily cause wear, loosening, or even damage to the connecting components, affecting the tightness and sealing performance of the connection, and ultimately, the normal operation and service life of the unit.

[0004] In response to the above problems, existing connection methods are unable to effectively mitigate damage to the connecting components caused by water flow impact and vibration. Therefore, how to provide a water pipe connector that can buffer vibration, protect the connecting components, and improve the stability of the connection has become a technical problem that needs to be solved urgently by those skilled in the art. Utility Model Content

[0005] The present application provides a water pipe connector for a pumped storage unit and a pumped storage unit, aiming to solve the problem of damage to connecting components caused by water flow impact and vibration in the prior art.

[0006] In the first aspect, the present application provides a water pipe connector for a pumped storage unit, comprising two flanges for fixing adjacent water pipes and a mounting mechanism for fixing the two flanges, the two flanges being fixedly connected to the outside of one end of two adjacent water pipes close to each other, the mounting mechanism comprising a rubber protective member and a fixing member, the number of the mounting mechanisms being multiple and being circumferentially evenly connected to the two flanges, the flanges being circumferentially evenly provided with multiple mounting openings arranged one-to-one corresponding to the mounting mechanisms, the mounting openings on the two flanges corresponding one-to-one and the rubber protective member being nested inside the mounting openings, the two ends of the rubber protective member being respectively connected to the two flanges, the fixing member being connected through the rubber protective member and capable of fixing the rubber protective member and the two flanges at the same time.

[0007] In another feasible embodiment, the rubber protective member includes a rubber sleeve and two mounting rings;

[0008] The rubber sleeve is inserted into the mounting opening, and the mounting rings are provided at both ends of the rubber sleeve. One end of the rubber sleeve is fixedly connected to one of the mounting rings, and the other end of the rubber sleeve is movably and detachably connected to the other mounting ring. When the rubber protector is connected to the flange, the two mounting rings abut against the flange. The rubber sleeve is provided with a through hole in the axial direction, and the rubber sleeve is connected to the fixing member through the through hole.

[0009] In another feasible embodiment, a plurality of limiting grooves are provided on the inner wall of the rubber sleeve, and the fixing member includes a connecting rod, and a limiting protrusion that matches the limiting grooves is provided on the outer wall of the connecting rod.

[0010] In another feasible embodiment, both ends of the connecting rod are threadedly connected with fastening caps, and the fastening caps abut against the mounting ring to fix the rubber protective member and the flange.

[0011] In another feasible embodiment, the flange is provided with a plurality of connecting grooves evenly distributed in an circumferential direction around the outer periphery of the mounting opening, and a limiting rod arranged corresponding to the connecting groove is fixedly connected to the side of the mounting ring close to the flange, and the limiting rod is inserted into the connecting groove on the flange.

[0012] In another feasible implementation manner, one end of the limiting rod close to the flange is fixedly connected to a limiting head, and a fixing groove for clamping the limiting head is provided at the inner bottom of the connecting groove.

[0013] In another feasible embodiment, the rubber sleeve is provided with a clamping ring at one end which is detachably connected to the mounting ring and is clamped with the mounting ring at this end through the clamping ring, and the mounting ring clamped with the rubber sleeve is provided with a ring groove for clamping the clamping ring.

[0014] In another feasible embodiment, the limiting head is an umbrella-shaped structure with elastic deformation capability, and the limiting head is made of rubber material.

[0015] On the other hand, the present application provides a pumped storage unit, including an electric generator, a turbine is provided at the lower part of the electric generator, the electric generator is transmission-connected to the turbine, water pipes are provided on both sides of the left and right sides of the turbine, and the water pipes are further connected to adjacent water pipes through the water pipe connector provided in the present application as mentioned above to achieve the extension of the water pipes.

[0016] Compared with the prior art, this application has the following beneficial effects:

[0017] 1. The water pipe connector for a pumped-storage unit provided herein utilizes a rubber protector positioned between two flanges, leveraging the elasticity and shock-absorbing properties of the rubber material to effectively absorb and mitigate vibrations caused by water flow impact. Furthermore, each end of the rubber protector is connected to the flanges, forming a flexible connection that reduces the direct effects of vibration on the flanges and mountings, significantly reducing wear and damage to the connecting components and extending the service life of the equipment.

[0018] 2. The installation mechanism used in this application includes multiple circumferentially evenly distributed rubber protective parts and fixing parts, which are circumferentially evenly connected on two flanges. This layout ensures the uniformity of force on the connecting parts, avoids loosening or deformation of the connection due to uneven force, thereby improving the stability and sealing of the water pipeline connection, and thus ensuring the safe operation of the unit.

[0019] 3. In this application, the rubber protective part is nested inside the mounting hole on the flange, and the fixing part is passed through the rubber protective part, which can fix the rubber protective part and the two flanges at the same time. This connection method has a simple structure and is easy to install and disassemble, which can reduce the workload of installation and maintenance, thereby improving construction and maintenance efficiency and reducing operating costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0021] Figure 1 A schematic diagram of the overall structure of a water pipe connector for a pumped storage unit provided in one embodiment of the present application;

[0022] Figure 2 A disassembled schematic diagram of a water pipe connector for a pumped storage unit provided in one embodiment of the present application;

[0023] Figure 3 It is a schematic diagram of the partial three-dimensional structure of the flange and the mounting mechanism;

[0024] Figure 4 for Figure 2 A in the middle is an enlarged schematic diagram of the three-dimensional structure;

[0025] Figure 5 A schematic structural diagram of an installation mechanism provided in one embodiment of the present application;

[0026] Figure 6 A schematic structural diagram of a rubber sleeve provided in one embodiment of the present application;

[0027] Figure 7 A schematic diagram of the overall structure of a pumped storage unit provided in one embodiment of the present application.

[0028] Legend:

[0029] 1. Electric generator; 2. Turbine; 3. Water pipe; 4. Flange; 41. Connecting groove; 411. Fixing groove; 42. Mounting port; 5. Rubber protective part; 51. Rubber sleeve; 511. Snap ring; 512. Limiting groove; 52. Mounting ring; 521. Ring groove; 53. Limiting rod; 531. Limiting head; 6. Fixing part; 61. Connecting rod; 611. Limiting protrusion; 62. Fastening cap. DETAILED DESCRIPTION

[0030] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application are clearly and completely described below. Obviously, the described embodiments are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts also fall within the scope of protection of this application.

[0031] In order to more clearly illustrate the purpose, technical solutions and advantages of the embodiments of the present application, the technical solutions in the embodiments of the present application are described in detail below. It should be noted that the described embodiments are only part of the examples of the present application and are not the entire content. Based on the embodiments of the present application, any other implementation methods obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0032] In the description of this application, it should be understood that the orientation or position relationship represented by terms such as "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. is based on the orientation or position relationship shown in the accompanying drawings, and is only used to facilitate the description of this application and simplify the explanation, and does not imply that the device or element must have a specific orientation, structure or operation mode, and therefore should not be regarded as a limitation on this application.

[0033] The terms "first," "second," and so on are used solely to distinguish different technical features and do not indicate the relative importance of such features or a specific number of such features. Therefore, a feature described as "first" or "second" may refer to one or more of such features. In this application, unless otherwise specified, "plurality" generally refers to two or more.

[0034] In the description of this application, it should be noted that, unless expressly specified or otherwise limited, the terms "mounted," "connected," and "connected" should be interpreted broadly. For example, they may refer to fixed connections, detachable connections, or integrated connections. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0035] First, let’s explain the terms involved in this application:

[0036] Pumped-storage hydroelectric generators are devices that store and release electrical energy. During periods of low power load, they convert electrical energy into mechanical energy, pumping water from a lower reservoir to a higher reservoir. During peak power periods, the water from the higher reservoir is released to drive turbines, generating electricity. This energy storage and conversion method can regulate grid load, balance power supply and demand, and improve the efficiency and stability of the power system.

[0037] Motor generator: A device that can act as a generator to convert mechanical energy into electrical energy, and as a motor to convert electrical energy into mechanical energy. In pumped storage units, motor generators are usually used in two working modes: when pumping water, they act as a motor to drive the turbine; when generating electricity, they act as a generator to convert the mechanical energy of the turbine into electrical energy.

[0038] Water turbine: It is the main equipment in the hydroelectric power generation system, used to convert the potential energy and kinetic energy of water into mechanical energy to drive the electric generator. In the pumped storage system, the water turbine can operate in both directions, converting the kinetic energy of the water flow into mechanical energy in the power generation mode and converting the mechanical energy into the kinetic energy of the water flow in the pumping mode.

[0039] Water pipe: The water pipe is a piping system used to connect high-level reservoirs, low-level reservoirs, and turbines, responsible for water transportation. It is an important component of the pumped storage unit. Its structural design and connection quality directly affect the system's water transportation efficiency and operational safety.

[0040] Flange: A connection device used to securely connect adjacent water pipes together to ensure the stability and tightness of the pipes.

[0041] See also Figure 1-Figure 7 , Figure 1 A schematic diagram of the overall structure of a water pipe connector for a pumped storage unit provided in one embodiment of the present application; Figure 2 A disassembled schematic diagram of a water pipe connector for a pumped storage unit provided in one embodiment of the present application; Figure 3 It is a schematic diagram of the partial three-dimensional structure of the flange and the mounting mechanism; Figure 4 for Figure 2 A in the middle is an enlarged schematic diagram of the three-dimensional structure; Figure 5A schematic structural diagram of an installation mechanism provided in one embodiment of the present application; Figure 6 A schematic structural diagram of a rubber sleeve provided in one embodiment of the present application; Figure 7 This is a schematic diagram of the overall structure of a pumped storage unit provided in one embodiment of the present application. Figure 1 and Figure 2 As shown, an embodiment of the present application provides a water pipe connector for a pumped storage unit, comprising two flanges 4 for fixing adjacent water pipes 3 and a mounting mechanism for fixing the two flanges 4 together.

[0042] The two flanges 4 are respectively fixedly connected to the outside of one end of two adjacent water pipes 3 that are close to each other. The mounting mechanism includes a rubber protective member 5 and a fixing member 6. There are multiple mounting mechanisms and they are evenly connected to the two flanges 4 in a circumferential direction. The flanges 4 are evenly provided with multiple mounting openings 42 arranged one-to-one corresponding to the mounting mechanisms in a circumferential direction. The mounting openings 42 on the two flanges 4 correspond one-to-one and the rubber protective member 5 is nested inside the mounting openings 42. The two ends of the rubber protective member 5 are respectively connected to the two flanges 4. The fixing member 6 is connected to the rubber protective member 5 and can fix the rubber protective member 5 and the two flanges 4 at the same time.

[0043] The water pipe connector for a pumped storage unit provided in the embodiment of the present application is evenly distributed circumferentially on the outside of two adjacent water pipes 3 by combining two flanges 4 with a mounting mechanism. This structural layout ensures uniform force at the connection, effectively avoiding loose connection or structural deformation caused by single-point force, and improving the stability of the connection.

[0044] At the same time, the rubber protective part 5 included in the installation mechanism is nested inside the installation port 42 of the flange 4, and is connected to the flange 4 at both ends and fixed by the fixing part 6. This rubber protective part design not only provides a good sealing effect, but also can absorb the vibration generated by the impact of water flow, reduce the damage of vibration to the flange and bolts, and thus extend the service life of the equipment.

[0045] In addition, in this embodiment, the way in which the fixing part 6 is combined with the rubber protective part 5 is simple and easy to operate, and does not require complicated installation tools and processes. The fixing part 6 is passed through the rubber protective part 5 and the two flanges 4 are fixed at the same time, making connection and disassembly more convenient, effectively improving the installation efficiency and convenience of subsequent maintenance.

[0046] As an optional solution of the embodiment of the present application, Figure 2 and Figure 3 As shown, the rubber protection member 5 includes a rubber sleeve 51 and two mounting rings 52 .

[0047] The rubber sleeve 51 is inserted into the mounting opening 42. Mounting rings 52 are provided at both ends of the rubber sleeve 51. One end of the rubber sleeve 51 is fixedly connected to one of the mounting rings 52, and the other end of the rubber sleeve 51 is movably and detachably connected to the other mounting ring 52. When the rubber protector 5 is connected to the flange 4, the two mounting rings 52 abut against the flange 4. A through hole is opened in the axial direction of the rubber sleeve 51, and the rubber sleeve 51 is connected to the fixing member 6 through the through hole.

[0048] In this embodiment, the rubber protector 5 is a combination of a rubber sleeve 51 and two mounting rings 52. One end of the rubber sleeve 51 is fixedly connected to one mounting ring 52, while the other end is detachably connected to the other mounting ring 52. This facilitates connection of the component to the flange 4 via the rubber protector 5 and facilitates removal of the rubber protector 5 from the flange 4. This design not only ensures the stability of the water pipe connector during installation, but also allows for easy removal. For maintenance or replacement, there is no need to disassemble the entire structure, reducing maintenance difficulty and time.

[0049] At the same time, the axially defined through-holes in the rubber sleeve 51 mate with the fixing member 6, creating a stable connection between the inner wall of the rubber sleeve 51 and the fixing member 6. This enhances the structure's resistance to impact and wear, further increasing the service life of the water pipe connector. Furthermore, the mounting rings 52 at each end of the rubber sleeve 51, when in contact with the flange 4, effectively enhance the sealing performance of the connection, reducing potential leakage during water delivery, thereby ensuring the safe and efficient operation of the unit.

[0050] In another embodiment of the present application, Figure 3 As shown, the inner wall of the rubber sleeve 51 is provided with a plurality of limiting grooves 512, and the fixing member 6 includes a connecting rod 61. Figure 3 and Figure 5 As shown, the outer wall of the connecting rod 61 is provided with a limiting protrusion 611 that matches the limiting groove 512.

[0051] In this embodiment, the limiting groove 512 formed on the inner wall of the rubber sleeve 51 cooperates with the limiting protrusion 611 on the connecting rod 61 to restrict the movement of the connecting rod 61 within the rubber sleeve 51. This prevents the connecting rod 61 from moving or rotating unnecessarily within the rubber sleeve 51 when the connector is subjected to force or vibration, particularly when subjected to water impact or significant vibration. This ensures a precise and secure connection position and prevents frequent friction and collision between the connecting rod 61 and the inner wall of the rubber sleeve 51, reducing local wear of the rubber sleeve. Furthermore, the matching design of the limiting groove 512 and the limiting protrusion 611 disperses the stress generated by external vibrations transmitted to the rubber sleeve 51 across multiple contact points. This eliminates single-point stress concentration on the surface of the rubber sleeve 51, thereby reducing the localized destructive effects of stress concentration on the rubber material, slowing wear and material aging, and further improving the durability of the rubber protective member 5, thereby extending the service life of the water pipe connector. Furthermore, the cooperation between the limiting groove 512 and the limiting protrusion 611 in this embodiment provides a good anti-slip function, effectively preventing the connection parts from loosening or displacement in the working state, and ensuring the safe operation of the unit.

[0052] In some embodiments, as Figure 2 and Figure 6 As shown, both ends of the connecting rod 61 are threadedly connected with a fastening cap 62, as shown in FIG. Figure 3 As shown, the fastening cap 62 abuts against the mounting ring 52 to fix the rubber protector 5 and the flange 4 .

[0053] To further enhance the fastening performance of the fixing member 6 when securing the rubber protective member 5 and the two flanges 4, this embodiment utilizes the threaded design at both ends of the connecting rod 61 in conjunction with the fastening cap 62 to achieve efficient fastening of the rubber protective member 5 and the flanges 4. This not only enhances the secure installation, but also allows the fastening force of the fixing member 6 to be flexibly adjusted by adjusting the tightening degree of the fastening cap 62. Furthermore, the design of the fastening cap 62 abutting against the mounting ring 52 evenly distributes the fastening force between the rubber sleeve 51 and the flanges 4, reducing the risk of structural deformation due to localized stress and effectively enhancing the stability and durability of the overall structure. Furthermore, the use of the fastening cap 62 facilitates installation and removal operations while ensuring that the fixing member 6 is not easily loosened during long-term use, thereby enhancing the safety and reliability of the equipment.

[0054] Alternatively, as Figure 2-Figure 4 As shown, the flange 4 is provided with a plurality of connection grooves 41 evenly distributed in an circumferential direction around the outer periphery of the mounting opening 42 , and a limiting rod 53 arranged corresponding to the connection groove 41 is fixedly connected to the side of the mounting ring 52 close to the flange 4 , and the limiting rod 53 is inserted into the connection groove 41 on the flange 4 .

[0055] In this embodiment, the multiple connecting grooves 41 designed around the mounting opening 42 of the flange 4 cooperate with the limiting rods 53 on the mounting ring 52 to achieve multi-point fixed fixation, effectively enhancing the stability and vibration resistance of the water pipe connector under complex working conditions. Furthermore, the corresponding arrangement of the limiting rods 53 and the connecting grooves 41 ensures that the mounting ring 52 and the flange 4 are accurately aligned during installation, avoiding problems such as reduced sealing performance and structural instability caused by misalignment or improper installation. Furthermore, the even distribution of the connecting grooves 41 around the circumference ensures uniform force between the limiting rods 53 and the flange 4, further enhancing the stability and durability of the water pipe connector during operation.

[0056] As an option in the embodiment of the present application, the end of the limiting rod 53 close to the flange 4 is fixedly connected to the limiting head 531, and a fixing groove 411 for clamping the limiting head 531 is opened at the inner bottom of the connecting groove 41.

[0057] In this embodiment, the clamping design of the limit head 531 and the fixing groove 411 can firmly fix the limit rod 53 on the flange 4 through the clamping force after the limit rod 53 is inserted into the connecting groove 41, effectively preventing the limit rod 53 from loosening or falling off under the impact and vibration of water flow, thereby ensuring the overall stability of the water pipe connector.

[0058] Moreover, the precise fit between the limit head 531 and the fixing groove 411 provides a good positioning effect, so that the limit rod 53 can always remain in the correct position. This structure can effectively resist the impact force and vibration force generated by the water flow, avoid axial or radial displacement of the limit rod 53, and ensure the reliability of the connection.

[0059] In addition, the clamping structure design of the limit head 531 and the fixing groove 411 can quickly and firmly fix the limit rod 53 and the flange 4 during the installation process, simplifying the installation operation steps, improving the installation efficiency, and also facilitating disassembly and replacement during later maintenance.

[0060] In some embodiments, as Figure 2 、 Figure 5 and Figure 6 As shown, the rubber sleeve 51 is provided with a snap ring 511 at one end of the detachable mounting ring 52 and is snap-connected to the mounting ring 52 at the end through the snap ring 511. Figure 2 and Figure 5 As shown, the mounting ring 52 that is engaged with the rubber sleeve 51 is provided with a ring groove 521 for engaging the clamping ring 511 .

[0061] During use, the snap ring 511 provided at the detachable connection of the rubber sleeve 51 cooperates with the ring groove 521 on the mounting ring 52, which can achieve flexible disassembly and assembly while maintaining a stable connection, effectively improving the ease of use and adaptability of the water pipe connector.

[0062] In some embodiments, as Figure 6 As shown, the limiting head 531 is an umbrella-shaped structure with elastic deformation capability, and the limiting head 531 is made of rubber material.

[0063] In this embodiment, the stopper 531 utilizes an elastically deformable, umbrella-shaped structure. This elastic deformation allows it to absorb impact energy when subjected to significant external forces, preventing damage to the stopper structure caused by excessive force. The stopper 531 is made of rubber, a material whose elasticity and toughness effectively enhance its impact and wear resistance, extending the overall service life of the water pipe connector.

[0064] At the same time, the umbrella-shaped limit head 531 not only provides a good limiting effect, but also facilitates operation during installation and disassembly, and has excellent anti-deformation ability when subjected to vibration or impact. This multifunctional combination improves the practicality and reliability of the connector.

[0065] like Figure 7As shown, the embodiment of the present application also provides a pumped storage unit, including an electric generator 1, a turbine 2 is provided at the bottom of the electric generator 1, the electric generator 1 is connected to the turbine 2 in a transmission manner, and water pipes 3 are provided on both sides of the turbine 2. The water pipes 3 are further connected to adjacent water pipes 3 through the water pipe connector provided in the above embodiment of the present application to extend the water pipes. When in use, two adjacent water pipes 3 are docked together, and the flanges 4 on the water pipes 3 are docked together, with the mounting openings 42 on the flanges 4 corresponding to each other. Then, a rubber sleeve 51 is passed through the mounting opening 42 of the flange 4 on one side until it is snapped into the mounting opening 42 of the flange 4 on the other side. Then, a mounting ring 52 with an annular groove 521 is fixed through the annular groove 521 and the snap ring 511 on the rubber sleeve 51, thereby completing the installation between the rubber protective member 5 and the two flanges 4. When installing the rubber protective member 5, the limiting rod 53 on the mounting ring 52 is inserted into the connecting groove 41 on the flange 4 until the limiting head 531 on the limiting rod 53 is snapped into the fixing groove 411 on the flange 4, thereby fixing the two mounting rings 52 to the two flanges 4. After the rubber protective member 5 is installed, the connecting rod 61 is inserted into the rubber sleeve 51, so that the multiple limiting protrusions 611 on the connecting rod 61 are snapped into the limiting grooves 512 in the rubber sleeve 51 one by one. Then, the two fastening caps 62 are tightened on both sides of the connecting rod 61, so that the fastening caps 62 press the two mounting rings 52 against the flange 4, and the installation is completed. The water pipe 3 in the pumped storage unit of this embodiment is further connected to the adjacent water pipes 3 through the water pipe connector provided by the embodiment of the application. In actual application, the water pipe can be flexibly extended, and the layout and length of the water pipe can be adjusted according to different working conditions, thereby enhancing adaptability.

[0066] Moreover, by using the water pipe connector of the embodiment of the present application, each adjacent water pipe 3 can maintain the stability and good sealing performance of the connection when extended. The combined structure of the rubber protective member 5 and the flange 4 can effectively absorb the vibration and stress changes caused by the impact of the water flow, prevent the connection from loosening or leaking, and ensure the safety and reliability of the water pipeline under different operating conditions. Moreover, the unit uses the water pipe connector of the embodiment of the present application, which can not only effectively extend the length of the water pipe, but also reduce the damage caused by impact and vibration at the connection through reasonable structural design such as the rubber protective member 5, the limit rod 53, the limit groove 512, etc., reducing the frequency and difficulty of maintenance. Moreover, the convenience during installation and removal makes the configuration and adjustment of the water pipe more flexible, thereby improving the operating efficiency of the entire pumped storage unit.

[0067] To sum up, the water pipe connector for the pumped storage unit provided in the embodiments of the present application has unique innovations in structural design and layout. Through the ingenious combination of rubber protective parts, flanges, limiting structures, clamping rings and other components, it can achieve the purpose of improving the stability and vibration resistance of the water pipe connection in a complex water flow impact environment. This multifunctional composite structure significantly improves the actual application effect and practical value.

[0068] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some or all of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A water pipe connector for a pumped storage unit, characterized in that: The invention comprises two flanges (4) for fixing adjacent water pipes (3) and a mounting mechanism for fixing the two flanges (4). The two flanges (4) are respectively fixedly connected to the outside of one end of two adjacent water pipes (3) close to each other. The mounting mechanism comprises a rubber protective member (5) and a fixing member (6). The number of the mounting mechanisms is multiple and they are evenly connected to the two flanges (4) in an annular direction. The flanges (4) are evenly provided with multiple mounting openings (42) arranged one-to-one corresponding to the mounting mechanisms in an annular direction. The mounting openings (42) on the two flanges (4) correspond one-to-one and the rubber protective member (5) is nested inside the mounting openings (42). The two ends of the rubber protective member (5) are respectively connected to the two flanges (4). The fixing member (6) is connected to the rubber protective member (5) and can fix the rubber protective member (5) and the two flanges (4) at the same time.

2. The water pipe connector for a pumped storage unit according to claim 1, characterized in that: The rubber protective member (5) comprises a rubber sleeve (51) and two mounting rings (52); The rubber sleeve (51) is inserted into the mounting opening (42), and the mounting rings (52) are provided at both ends of the rubber sleeve (51). One end of the rubber sleeve (51) is fixedly connected to one of the mounting rings (52), and the other end of the rubber sleeve (51) is movably and detachably connected to the other mounting ring (52). When the rubber protective member (5) is connected to the flange (4), the two mounting rings (52) abut against the flange (4). The rubber sleeve (51) is provided with a through hole in the axial direction, and the rubber sleeve (51) is connected to the fixing member (6) through the through hole.

3. The water pipe connector for a pumped storage unit according to claim 2, characterized in that: The inner wall of the rubber sleeve (51) is provided with a plurality of limiting grooves (512), the fixing member (6) comprises a connecting rod (61), and the outer wall of the connecting rod (61) is provided with limiting protrusions (611) that match the limiting grooves (512).

4. The water pipe connector for a pumped storage unit according to claim 3, characterized in that: Both ends of the connecting rod (61) are threadedly connected with fastening caps (62), and the fastening caps (62) are in contact with the mounting ring (52) and are used to fix the rubber protective member (5) and the flange (4).

5. The water pipe connector for a pumped storage unit according to any one of claims 2 to 4, characterized in that: The flange (4) is provided with a plurality of connection grooves (41) uniformly arranged in a circumferential direction on the periphery of the mounting opening (42); a limiting rod (53) arranged corresponding to the connection groove (41) is fixedly connected to a side of the mounting ring (52) close to the flange (4); and the limiting rod (53) is inserted into the connection groove (41) on the flange (4).

6. The water pipe connector for a pumped storage unit according to claim 5, characterized in that: One end of the limiting rod (53) close to the flange (4) is fixedly connected to the limiting head (531), and a fixing groove (411) for clamping the limiting head (531) is provided at the inner groove bottom of the connecting groove (41).

7. The water pipe connector for a pumped storage unit according to claim 5, characterized in that: The rubber sleeve (51) is provided with a snap ring (511) at one end detachably connected to the mounting ring (52) and is snap-connected to the mounting ring (52) at the end via the snap ring (511); the mounting ring (52) snap-connected to the rubber sleeve (51) is provided with a ring groove (521) for snapping the snap ring (511).

8. The water pipe connector for a pumped storage unit according to claim 6, characterized in that: The limiting head (531) is an umbrella-shaped structure with elastic deformation capability, and the limiting head (531) is made of rubber material.

9. A pumped storage unit, characterized in that: The invention comprises an electric generator (1), a water turbine (2) is provided at the lower part of the electric generator (1), the electric generator (1) is connected to the water turbine (2) in a transmission manner, and water pipes (3) are provided on both the left and right sides of the water turbine (2), and the water pipes (3) are further connected to adjacent water pipes (3) through the water pipe connector according to any one of claims 1 to 8 to achieve the extension of the water pipes.

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