Mixed flow overpressure power generation device for industrial circulating water system

Abstract

The utility model discloses industrial circulating water system mixed flow type overpressure power generation device, including pipeline subassembly, be provided with control valve subassembly and power generation device on the pipeline subassembly, the pipeline subassembly includes power generation branch and bypass branch, and power generation branch and bypass branch intercommunication. Industrial circulating water system mixed flow type overpressure power generation device, the utility model discloses an integrated generator shaft and water machine axle, adopts generator shaft direct coupling runner, simplifies the structure, avoids the complicated and the installation error of the shafting centering, improves unit stability and security, and generator is inverted in the motor support inside, has reduced the basic size again, can avoid the influence that the rainy and snowy weather brings, especially suitable for the circulating water system and city water treatment system with multiple branch pipes of the installation space limited.

Description

Technical Field

[0001] This utility model belongs to the technical field of circulating water energy recovery equipment, and relates to a mixed-flow residual pressure power generation device for industrial circulating water systems. Background Technology

[0002] Large-scale circulating cooling water systems or pressurized water supply networks are prevalent in industrial production (such as chemical, metallurgical, and pharmaceutical industries) and urban water treatment systems. After flowing through these networks, the water still carries a significant amount of excess water energy and residual pressure, resulting in substantial energy waste. Currently, most industries utilize residual pressure power generation devices to convert this water energy into electrical energy, achieving economic benefits while recovering energy. Traditional residual pressure power generation involves installing a horizontal mixed-flow power generation device on a bypass pipe of a branch pipe, cutting off the original water flow and guiding the water into the power generation device to achieve the power generation goal. However, this approach has the following problems: the horizontal mixed-flow turbine has a low overall layout, while the root valves on the branch pipes are generally placed higher. After the water inlet pipe is introduced from the rear end of the root valve, the pipe layout becomes complex and costly; due to the layout, the radial force distribution of the horizontal mixed-flow turbine is uneven, which easily generates noise and vibration, while increasing pipe resistance and reducing power generation efficiency; the horizontal mixed-flow turbine occupies a large area, and the circulating water system generally has a complex and dense underground pipe network, which restricts installation and increases civil engineering costs; the generator is directly exposed to the air, and water ingress into the bearings can easily affect operation during heavy rain or storms, requiring the installation of a rain shelter or an increase in the protection level of the power generation device, which increases costs and affects heat dissipation; substandard rain shelter materials can easily cause fires and losses, and the rain shelter can also affect the heat dissipation channel of the cooling tower.

[0003] In summary, existing technologies suffer from the problem that traditional power generation devices are unsuitable for space-constrained applications due to structural limitations. Utility Model Content

[0004] The purpose of this invention is to provide a mixed-flow residual pressure power generation device for industrial circulating water systems, which solves the problem that traditional power generation devices in the prior art cannot be applied to space-limited occasions due to structural limitations.

[0005] The technical solution adopted by this utility model is a mixed-flow residual pressure power generation device for industrial circulating water system, including a pipeline assembly, a control valve assembly and a power generation device installed on the pipeline assembly; the pipeline assembly includes a power generation branch and a bypass branch, which are connected.

[0006] The features of this utility model also include: The bypass branch includes a branch pipe, which is equipped with a branch pipe root valve and a bypass electric valve.

[0007] The power generation device is installed on the power generation branch. One end of the power generation branch is connected to the side wall of the branch pipe near the root valve of the bypass electric valve, and the other end of the power generation branch is connected to the side wall of the branch pipe away from the root valve of the bypass electric valve.

[0008] The power generation branch includes an inlet pipe, one end of which is connected to the branch pipe, and the other end of which is connected to the inlet of the power generation device.

[0009] The power generation branch includes a water outlet pipe, one end of which is connected to the branch pipe, and the other end of which is connected to the outlet of the power generation device.

[0010] The inlet pipe is connected to the generator via an inlet electric valve, and the generator is connected to the outlet pipe via an expansion joint and an outlet manual valve.

[0011] The power generation device includes a motor bracket, one end of which is connected to a volute, and a generator is installed inside the motor bracket near the volute.

[0012] One end of the volute is connected to the bypass branch through the inlet pipe, and the other end of the volute is connected to the inside of the outlet cone pipe. The outlet cone pipe is connected to the bypass branch through the outlet pipe.

[0013] The volute contains a rotor, which is connected to one end of a shaft, and the other end of the shaft is connected to a generator. The volute also contains guide vanes, which are configured to work in conjunction with the rotor.

[0014] A sealing device and a water-throwing ring are installed inside the volute near the motor bracket. The sealing device and the water-throwing ring are located between the volute and the generator. An overflow pipe is installed between the volute and the generator.

[0015] The beneficial effects of this utility model are as follows: By integrating the generator shaft and the water turbine shaft into one unit and adopting a direct-drive rotor for the generator shaft, this utility model simplifies the structure, avoids the complexity of shaft alignment and installation errors, and improves the stability and safety of the unit. At the same time, the generator is installed upside down inside the motor bracket, which reduces the foundation size and avoids the impact of rain and snow. It is especially suitable for circulating water systems and urban water treatment systems with multiple branch pipes where installation space is limited. Attached Figure Description

[0016] Figure 1 This is a layout diagram of the mixed-flow residual pressure power generation device for an industrial circulating water system according to this utility model; Figure 2 This is a schematic diagram of the power generation device in this utility model; In the diagram, 1. Branch pipe; 2. Branch pipe root valve; 3. Inlet pipe; 4. Inlet electric valve; 5. Generator; 501. Outlet cone; 502. Volute; 503. Sealing device; 504. Shaft; 505. Water-throwing ring; 506. Generator; 507. Motor bracket; 508. Guide vane; 509. Runner; 510. Overflow pipe; 6. Expansion joint; 7. Outlet manual valve; 8. Outlet pipe; 9. Bypass electric valve. Detailed Implementation

[0017] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0018] Industrial circulating water system mixed-flow residual pressure power generation device, such as Figure 1 As shown, it includes a pipeline assembly, on which a control valve assembly and a power generation device 5 are installed; the pipeline assembly includes a power generation branch and a bypass branch, which are connected.

[0019] The bypass branch includes a branch pipe 1, on which a branch pipe root valve 2 and a bypass electric valve 9 are installed. The generator 5 is installed on the generator branch, with one end connected to the side wall of branch pipe 1 near the branch pipe root valve 2 (the side of the bypass electric valve 9), and the other end connected to the side wall of branch pipe 1 away from the branch pipe root valve 2 (the side of the bypass electric valve 9). The generator branch includes an inlet pipe 3, one end of which is connected to branch pipe 1, and the other end of which is connected to the inlet of the generator 5. The generator branch also includes an outlet pipe 8, one end of which is connected to branch pipe 1, and the other end of which is connected to the outlet of the generator 5. The inlet pipe 3 and the generator 5 are connected via an inlet electric valve 4, and an expansion joint 6 and an outlet manual valve 7 are sequentially connected between the generator 5 and the outlet pipe 8.

[0020] Combination Figure 2 As shown, the power generation device 5 includes a motor bracket 507, one end of which is connected to a volute 502. A generator 506 is installed inside the motor bracket 507 near the end of the volute 502. One end of the volute 502 is connected to a bypass branch via an inlet pipe 3, and the other end is connected to the inside of an outlet cone pipe 501. The outlet cone pipe 501 is connected to the bypass branch via an outlet pipe 8. A rotor 509 is installed inside the volute 502, connected to one end of a shaft 504. The other end of the shaft 504 is connected to the generator 506. A guide vane 508 is also installed inside the volute 502, and the guide vane 508 is configured to cooperate with the rotor 509. A sealing device 503 and a water-slinging ring 505 are provided inside the volute 502 near the motor bracket 507. The sealing device 503 and the water-slinging ring 505 are located between the volute 502 and the generator 506. An overflow pipe 510 is provided between the volute 502 and the generator 506.

[0021] This utility model uses the branch pipe 1 of the original pipeline system as the basic carrier to build a complete system including the power generation branch and the bypass branch. The core consists of three main parts: pipeline components, control valve components and power generation device 5. Each component is connected in sequence according to functional requirements to form a stable water flow circulation and energy recovery loop.

[0022] The piping system is the core channel for water flow transmission. Branch pipe 1, as the basic pipeline, is directly connected to inlet pipe 3 via a saddle hole, allowing water to flow from the main pipeline to the power generation branch. The other end of inlet pipe 3 connects to power generation unit 5, delivering water to the core power generation component. The outlet end of power generation unit 5 is first connected to expansion joint 6, which compensates for displacement deviations during installation and operation through its flexible connection. Then, it is connected to outlet manual valve 7, which is then fixed to outlet pipe 8. Outlet pipe 8 finally reconnects to branch pipe 1, completing the closed-loop water flow of the power generation branch. Meanwhile, branch pipe 1 between inlet pipe 3 and outlet pipe 8 serves as a bypass branch, specifically equipped with bypass electric valve 9 to switch between the power generation branch and the bypass branch.

[0023] The control valve assembly is responsible for regulating the water flow state and branch switching. The inlet electric valve 4 on the inlet pipe 3 and the bypass electric valve 9 on the bypass branch form a linkage control. The two open and close at the same time, which can reasonably distribute the pressure of the pipeline system, avoid strong pressure fluctuations when the water flow is switched, and ensure the stability of the pipeline system. The outlet manual valve 7 is used to manually control the opening and closing of the generator branch outlet, and works with the expansion joint 6 to realize pipeline isolation during the maintenance and repair of the generator 5.

[0024] The power generation device 5 is the core unit for energy conversion, consisting of an outlet cone pipe 501, a volute 502, a sealing device 503, a shaft 504, a water-throwing ring 505, a generator 506, a motor bracket 507, a guide vane 508, a rotor 509, and an overflow pipe 510. The motor bracket 507 serves as the core support, with its lower part firmly connected to the foundation and its upper part fixed to the volute 502 at one end and the generator 506 suspended and fixed at the other end, ensuring the structural stability of the entire power generation device. The volute 502 serves as a water flow guiding component, used to guide the water flow to form a stable circulation. One end is connected to the inlet pipe 3, and the other end is connected to the outlet cone pipe 501. Inside, there is a guide vane 508, which is used to adjust the direction and opening of the water inlet to ensure that the water flow enters the impeller at the optimal angle. The shaft 504 of the generator 506 extends out and passes through the volute 502, adopting a single-shaft direct connection structure. The top of the shaft 504 is directly connected to the impeller 509. After the water flow is guided by the guide vane 508, it impacts the impeller 509 and rotates, thereby driving the generator 506 to operate and generate electricity. In the section of shaft 504 located between volute 502 and generator 506, sealing device 503 and water-throwing ring 505 are installed in sequence to form double protection to prevent water in volute 502 from entering generator 506. At the same time, overflow pipe 510 is set at the connection cavity between volute 502 and motor bracket 507 to drain water with minor leakage. The amount of water leakage can be used to visually indicate the damage to the seal, ensuring that generator 506 is not submerged in water. Meanwhile, generator 506 is placed inside motor bracket to protect it from rain and snow. Multiple protections ensure safe and stable operation.

[0025] This utility model uses the branch pipe 1 of the original pipeline system as the basic carrier to construct a complete circulation system including a power generation branch and a bypass branch. The core consists of pipeline components, control valve components, and a power generation device 5 working together to realize the recovery and power generation of surplus water energy. From the overall layout, the branch pipe 1 serves as the basic pipeline, and the branch pipe root valve 2 installed on it is used to control the opening and closing of the main pipeline. The bypass electric valve 9 is responsible for switching the water flow in the bypass branch. The two ends of the power generation branch are respectively connected to the side walls of the branch pipe 1 on both sides of the bypass electric valve 9, forming an energy recovery channel parallel to the bypass branch. From the perspective of local component collaboration, in the pipeline assembly, one end of the inlet pipe 3 is connected through the saddle hole on the branch pipe 1, and the other end is connected to the inlet of the generator unit 5 via the inlet electric valve 4, introducing the high-pressure water flow in the branch pipe 1 into the generator core. The outlet end of the generator unit 5 is first connected to the expansion joint 6, which compensates for displacement deviations during installation and operation through its flexible connection, and then connected to the outlet pipe 8 via the outlet manual valve 7. Finally, the water flow generated by power generation is returned to the branch pipe 1 through the outlet pipe 8, completing the water flow closed loop of the generator branch. The control valve assembly forms a linkage mechanism, with the inlet electric valve 4 and the bypass electric valve 9 opening and closing one to reasonably distribute the pipeline system pressure and avoid pressure fluctuations during water flow switching. The outlet manual valve 7 can achieve pipeline isolation during maintenance and repair. The energy conversion process inside the generator unit 5 is the core link: the motor bracket 507 serves as a support structure, with the lower part fixed to the foundation, one end connected to the volute 502, and the other end suspended upside down to fix the generator 506, ensuring the overall structural stability. Water flows into the volute 502 through the inlet pipe 3, forming a stable circulation. Guided by the internal guide vanes 508, the water impacts the impeller 509 with the designed flow direction and opening, causing the impeller 509 to rotate at high speed. The impeller 509 is directly connected to the generator 506 via a single shaft 504. The rotation of the shaft 504 directly drives the generator 506, realizing the conversion of water energy into electrical energy. Simultaneously, the sealing device 503 and the water-throwing ring 505 between the volute 502 and the generator 506 provide double protection, preventing water from entering the generator 506. A small amount of leaked water is discharged through the overflow pipe 510. The water generated after power generation is discharged through the outlet cone pipe 501 connected to the other end of the volute 502 and enters the subsequent pipeline to complete the circulation. When maintenance is required on the power generation branch, the system can automatically switch to the bypass branch, closing the inlet electric valve 4 and opening the bypass electric valve 9, ensuring that the stable operation of the original pipeline system is not affected.

[0026] From the perspective of overall system design, this utility model uses the branch pipe 1 of the original pipeline system as the basic carrier to construct a structure in parallel with the power generation branch and the bypass branch. The core technical effect is to achieve the dual guarantee of "energy recovery and system stability" - it does not damage the integrity of the original industrial circulating water or urban water treatment system pipeline, and can efficiently capture the excess pressure of the water flow in the branch pipe 1, avoiding the risk of system shutdown caused by the traditional device cutting off the original pipeline water flow, and making the energy recovery process fully compatible with the operation of the original system. It is especially suitable for industrial scenarios with multiple branch pipes and high stability requirements.

[0027] From the perspective of the local design of the pipeline components, the synergy of each component further enhances the practicality and durability of the system. The inlet pipe 3 is directly connected through the saddle hole on the branch pipe 1, eliminating the need for significant modifications to the branch pipe 1, reducing pipeline construction costs and downtime of the original system, while ensuring the sealing and stability of the water flow introduction; the outlet pipe 8 smoothly returns the water after power generation to the branch pipe 1, forming a complete water circulation and avoiding local water accumulation or pressure loss; and the expansion joint 6 between the power generation device 5 and the outlet pipe 8 can effectively compensate for displacement caused by thermal expansion and contraction or installation deviations during equipment operation, preventing pipeline cracking due to stress concentration, significantly improving the service life of the pipeline components, and reducing later maintenance costs.

[0028] The linkage design of the control valve assembly provides key technical support for the system's safe and flexible operation. The imported electric valve 4 and the bypass electric valve 9 adopt a "one open, one close" linkage logic, which can accurately distribute the water pressure in the branch pipe 1 during switching, completely solving the problem of pipeline vibration or equipment impact caused by excessive pressure fluctuations during switching of traditional devices, and ensuring the stable operation of both the original system and the power generation branch. The outlet manual valve 7 can quickly cut off the water flow when the power generation device 5 needs maintenance, realizing the independent isolation of the power generation branch without shutting down the entire branch pipe 1 system, greatly improving the convenience of maintenance, reducing the energy recovery interruption time caused by equipment maintenance, and indirectly improving the overall energy recovery efficiency.

[0029] As the core energy conversion unit, the design of the internal components of the power generation device 5 directly determines the device's power generation efficiency, environmental adaptability, and operational safety. The motor support 507 adopts a structure of "fixed foundation at the bottom, inverted generator 506 on top." This design keeps the generator 506 away from damp ground conditions and rain / snow, eliminating the need for an additional rain shelter. This saves on the purchase and installation costs of rain shelters and avoids the risk of fire caused by poor heat dissipation or substandard materials in traditional rain shelters. Furthermore, it reduces the foundation size of the unit, greatly improving the flexibility of unit layout and minimizing the need to avoid complex underground pipe networks. The stable support structure also reduces vibration during unit operation, improving equipment stability. The shaft 504 uses a single-shaft direct-drive design connecting the impeller 509 and the generator 506, eliminating the complex shaft connection components of traditional devices. This completely avoids unit failures caused by complex shaft alignment and large installation errors, while also reducing energy loss during shaft transmission. This allows the rotational kinetic energy of the impeller 509 to be converted into electrical energy in the generator 506 more efficiently, improving energy conversion efficiency. The cooperation between the volute 502 and the internal guide vanes 508 guides the water flow to form a stable circulation, ensuring that the water flow impacts the impeller 509 in the optimal direction and opening under design conditions. This avoids turbulent water flow causing the impeller 509 to idle or operate inefficiently, further improving power generation efficiency. The sealing device 503 and the water-throwing ring 505 between the volute 502 and the generator 506 provide double protection, effectively preventing water from the volute 502 from intruding into the generator 506. Any leaked water is promptly discharged through the overflow pipe 510, completely solving the problem of traditional exposed generators getting damp, extending the service life of the generator 506, and reducing equipment maintenance frequency and costs. Simultaneously, the vertical arrangement of the unit's rotor ensures that the rotor's gravity and axial force are in the same direction, effectively avoiding uneven radial force on the bearings caused by rotor gravity.

[0030] In addition, the design of the outlet cone pipe 501 can guide the water flow after power generation and recover kinetic energy, avoid the local eddies formed when the water flow is directly discharged, reduce the kinetic energy loss of the water flow at the pipe outlet, ensure that the water flow returned to the branch pipe 1 is stable and does not interfere with the normal water circulation of the original system, further enhance the compatibility between the device and the original system, and make the entire energy recovery process both efficient and safe.

[0031] Example 1 This embodiment proposes a mixed-flow residual pressure power generation device for an industrial circulating water system, including a pipeline assembly, a control valve assembly and a power generation device 5; the pipeline assembly includes a power generation branch and a bypass branch, which are connected.

[0032] Example 2 This embodiment proposes a mixed-flow residual pressure power generation device for an industrial circulating water system, including a pipeline assembly, a control valve assembly and a power generation device 5; the pipeline assembly includes a power generation branch and a bypass branch, which are connected.

[0033] The bypass branch includes a branch pipe 1, on which a branch pipe root valve 2 and a bypass electric valve 9 are installed. The generator 5 is installed on the generator branch, with one end of the generator branch connected to the side wall of the branch pipe 1 near the branch pipe root valve 2, and the other end of the generator branch connected to the side wall of the branch pipe 1 away from the branch pipe root valve 2.

[0034] Example 3 This embodiment proposes a mixed-flow residual pressure power generation device for an industrial circulating water system, including a pipeline assembly, a control valve assembly and a power generation device 5; the pipeline assembly includes a power generation branch and a bypass branch, which are connected.

[0035] The bypass branch includes a branch pipe 1, on which a branch pipe root valve 2 and a bypass electric valve 9 are installed. The generator 5 is installed on the generator branch, with one end connected to the side wall of the branch pipe 1 near the branch pipe root valve 2 (the end of the bypass electric valve 9), and the other end connected to the side wall of the branch pipe 1 away from the branch pipe root valve 2 (the end of the bypass electric valve 9). The generator branch includes an inlet pipe 3, one end of which is connected to the branch pipe 1, and the other end of which is connected to the inlet of the generator 5. The generator branch also includes an outlet pipe 8, one end of which is connected to the branch pipe 1, and the other end of which is connected to the outlet of the generator 5.

[0036] Example 4 This embodiment proposes a mixed-flow residual pressure power generation device for an industrial circulating water system, including a pipeline assembly, a control valve assembly, and a power generation device 5. The pipeline assembly includes a power generation branch and a bypass branch, which are connected. The bypass branch includes a branch pipe 1, on which a branch pipe root valve 2 and a bypass electric valve 9 are installed. The power generation device 5 is installed on the power generation branch, with one end connected to the side wall of the branch pipe 1 near the branch pipe root valve 2, and the other end connected to the side wall of the branch pipe 1 away from the branch pipe root valve 2. The power generation branch includes an inlet pipe 3, with one end connected to the branch pipe 1 and the other end connected to the inlet of the power generation device 5. The power generation branch also includes an outlet pipe 8, with one end connected to the branch pipe 1 and the other end connected to the outlet of the power generation device 5. The inlet pipe 3 is connected to the generator 5 via an inlet electric valve 4, and the generator 5 is connected to the outlet pipe 8 via an expansion joint 6 and an outlet manual valve 7.

[0037] Example 5 This embodiment proposes a mixed-flow residual pressure power generation device for an industrial circulating water system, including a pipeline assembly, a control valve assembly, and a power generation device 5. The pipeline assembly includes a power generation branch and a bypass branch, which are connected. The power generation device 5 includes a motor bracket 507, one end of which is connected to a volute 502. A generator 506 is installed inside the motor bracket 507 near the end of the volute 502. One end of the volute 502 is connected to the bypass branch through an inlet pipe 3, and the other end of the volute 502 is connected to the inside of an outlet cone pipe 501. The outlet cone pipe 501 is connected to the bypass branch through an outlet pipe 8.

[0038] Example 6 This embodiment proposes a mixed-flow residual pressure power generation device for an industrial circulating water system, including a pipeline assembly, a control valve assembly, and a power generation device 5. The pipeline assembly includes a power generation branch and a bypass branch, which are connected. The power generation device 5 includes a motor bracket 507, one end of which is connected to a volute 502. A generator 506 is installed inside the motor bracket 507 near the end of the volute 502. One end of the volute 502 is connected to the bypass branch via an inlet pipe 3, and the other end of the volute 502 is connected to the inside of an outlet cone pipe 501. The outlet cone pipe 501 is connected to the bypass branch via an outlet pipe 8. A rotor 509 is installed inside the volute 502, connected to one end of a shaft 504. The other end of the shaft 504 is connected to the generator 506. A guide vane 508 is also installed inside the volute 502, which is configured to cooperate with the rotor 509. A sealing device 503 and a water-slinging ring 505 are provided inside the volute 502 near the motor bracket 507. The sealing device 503 and the water-slinging ring 505 are located between the volute 502 and the generator 506. An overflow pipe 510 is provided between the volute 502 and the generator 506.

[0039] In one embodiment of this utility model, a branch pipe 1 of the original pipeline system is included. The branch pipe 1 has an inlet pipe 3 and an outlet pipe 8. An inlet electric valve 4 is installed on the inlet pipe 3, with the other end connected to a power generation device 5. An expansion joint 6 is installed at the outlet of the power generation device 5, connecting to an outlet manual valve 7. The other end of the outlet manual valve 7 is connected to the outlet pipe 8. A bypass electric valve 9 is installed on the branch pipe 1 of the original pipeline system between the inlet pipe 3 and the outlet pipe 8. A saddle hole is opened in the branch pipe 1 of the original pipeline system to introduce water flow into the power generation device 5. The pipeline system of the power generation device 5 serves as a bypass pipeline for the original pipeline system, recovering excess energy without affecting the stability and safety of the original pipeline system. Simultaneously, the branch pipe 1 between the inlet pipe 3 and the outlet pipe 8 of the original branch pipe 1 serves as a bypass pipeline for the power generation device 5, automatically switching with the power generation device 5 without affecting the stability and safety of the pipeline system, so as to timely and effectively maintain and service the power generation pipeline system.

[0040] This utility model uses the generator 5 as its main body; therefore, the bypass pipeline mentioned below refers to the pipeline between the inlet pipe 3 and the outlet pipe 8 on the branch pipe 1. A bypass electric valve 9 is installed on the bypass pipe to control the water flow into the bypass pipe. The bypass electric valve 9 and the inlet electric valve 4 at the generator 5 can be automatically coordinated, with one opening and the other closing, to rationally distribute the pressure of the pipeline system and automatically switch between the generator system state and the bypass system state without affecting the stability and safety of the pipeline system. In this utility model, the generator 5 adopts a single-shaft structure. The bottom of the shaft 504 is connected to the generator 506, and the top of the shaft 504 is connected to the rotor 519. The rotating component of the shaft system, i.e., the rotor 509, is located inside the volute 502. A sealing device 503 and a water-throwing ring 505 are provided between the volute 502 and the generator 506. The upper part of the motor bracket 507 is connected to the volute 502 and the generator 506 is also fixedly connected. The lower part of the motor bracket 507 is connected to the foundation to ensure the stability of the unit. After the water flows into the power generation device 5, it is guided by the volute 502 to form a circulation, and then flows through the guide vane 508. It enters the impeller 509 with the water flow direction and opening under the design working conditions, causing the impeller 509 to rotate, driving the generator to operate, and realizing the power generation function.

Claims

1. A mixed-flow residual pressure power generation device for industrial circulating water systems, characterized in that, It includes a pipeline assembly, on which a control valve assembly and a power generation device (5) are provided; the pipeline assembly includes a power generation branch and a bypass branch, which are connected.

2. The mixed-flow residual pressure power generation device for industrial circulating water systems according to claim 1, characterized in that, The bypass branch includes a branch pipe (1), and the branch pipe (1) is equipped with a branch pipe root valve (2) and a bypass electric valve (9).

3. The mixed-flow residual pressure power generation device for industrial circulating water systems according to claim 2, characterized in that, The power generation device (5) is installed on the power generation branch. One end of the power generation branch is connected to the side wall of the branch pipe (1) near the branch root valve (2) of the bypass electric valve (9), and the other end of the power generation branch is connected to the side wall of the branch pipe (1) away from the branch root valve (2) of the bypass electric valve (9).

4. The mixed-flow residual pressure power generation device for industrial circulating water systems according to claim 3, characterized in that, The power generation branch includes a water inlet pipe (3), one end of which is connected to the branch pipe (1), and the other end of which is connected to the inlet of the power generation device (5).

5. The mixed-flow residual pressure power generation device for industrial circulating water systems according to claim 4, characterized in that, The power generation branch includes a water outlet pipe (8), one end of which is connected to the branch pipe (1), and the other end of which is connected to the outlet of the power generation device (5).

6. The mixed-flow residual pressure power generation device for industrial circulating water systems according to claim 5, characterized in that, The inlet pipe (3) is connected to the power generation device (5) via an inlet electric valve (4), and the power generation device (5) is connected to the outlet pipe (8) via an expansion joint (6) and an outlet manual valve (7).

7. The mixed-flow residual pressure power generation device for industrial circulating water systems according to claim 1, characterized in that, The power generation device (5) includes a motor bracket (507), one end of which is connected to a volute (502), and a generator (506) is provided inside the motor bracket (507) near the volute (502).

8. The mixed-flow residual pressure power generation device for industrial circulating water systems according to claim 7, characterized in that, One end of the volute (502) is connected to the bypass branch through the inlet pipe (3), and the other end of the volute (502) is connected to the inside of the outlet cone pipe (501). The outlet cone pipe (501) is connected to the bypass branch through the outlet pipe (8).

9. The mixed-flow residual pressure power generation device for industrial circulating water systems according to claim 8, characterized in that, The volute (502) is provided with a rotating wheel (509), which is connected to one end of a shaft (504). The other end of the shaft (504) is connected to a generator (506). The volute (502) is also provided with a guide vane (508), which is configured to cooperate with the rotating wheel (509).

10. The mixed-flow residual pressure power generation device for industrial circulating water systems according to claim 9, characterized in that, A sealing device (503) and a water-slinging ring (505) are provided inside the volute (502) near the motor bracket (507). The sealing device (503) and the water-slinging ring (505) are located between the volute (502) and the generator (506). An overflow pipe (510) is provided between the volute (502) and the generator (506).

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