Hydrogenerator technical water supply system

Abstract

The utility model relates to water turbine generator technology water supply technical field, more specifically, relate to a water turbine generator technology water supply system, including main water supply pipeline and at least one spare water supply pipeline, and the water inlet end of main water supply pipeline and spare water supply pipeline all communicate technical water supply, and the water outlet end of main water supply pipeline and spare water supply pipeline all communicate with the water inlet end of unit each water unit, wherein, main water supply pipeline and spare water supply pipeline all are provided with Y type filter unit, and Y type filter unit is located in the upstream of main pump / spare pump in corresponding pipeline, the parallel design of main water supply pipeline and spare water supply pipeline can ensure the continuity of technical water supply, and Y type filter unit on spare water supply pipeline sets up in the upstream of spare pump, can intercept the foreign matter in water in advance, prevents these foreign matters from entering spare pump, guarantees the normal operation of spare pump, and Y type filter unit also provides greater sewage capacity, and then reduces the cleaning frequency.

Description

Technical Field

[0001] This utility model relates to the field of water supply technology using hydro-generator technology, and more specifically, to a water supply system using hydro-generator technology. Background Technology

[0002] The technical water supply system in a hydro-generator unit is a crucial auxiliary system ensuring the safe and stable operation of the unit. Its core function is to provide necessary water support for the unit and auxiliary equipment. Hydro-generator units inevitably generate significant heat during operation, and the main function of the technical water supply system is to cool the generator, bearings, and transformers. Existing technical water supply systems mainly employ gravity-flow, pump-driven, and mixed-flow methods. All three methods carry the risk of foreign object blockage in the technical water supply pipelines. This can lead to reduced pressure and flow, affecting cooling efficiency, or even, in severe cases, interruption of cooling water supply. The generator or bearings may be damaged by high temperatures within minutes, resulting in emergency shutdowns or even accidents.

[0003] Currently, most hydropower stations primarily use large-aperture trash racks before the pumps to intercept large foreign objects, and water filters after the pumps to intercept small foreign objects. This greatly reduces the likelihood of foreign objects clogging the technical water supply system. However, the trash racks before the pumps are ineffective at blocking long objects and fish, often causing foreign objects to jam the pump impeller, resulting in frequent pump failures, shutdowns of the technical water supply system, and seriously affecting the safe and stable operation of the hydropower station units. Utility Model Content

[0004] The purpose of this utility model is to provide a water supply system based on hydro-generator technology to solve the technical problems pointed out in the background art.

[0005] This utility model is achieved through the following technical solution: a water supply system for a hydro-generator, comprising a main water supply pipeline and at least one backup water supply pipeline, wherein the inlet ends of the main water supply pipeline and the backup water supply pipeline are both connected to the water supply system, and the outlet ends of the main water supply pipeline and the backup water supply pipeline are both connected to the inlet ends of each water-using unit of the generator set, wherein a Y-type filter unit is configured on both the main water supply pipeline and the backup water supply pipeline, and the Y-type filter unit is located upstream of the main pump / backup pump in the corresponding pipeline.

[0006] According to a preferred embodiment, the main water supply pipeline is provided with a first ball valve, a Y-type filter unit, a main pump, a first check valve, a first electric butterfly valve and a first automatic water filter in sequence from upstream to downstream.

[0007] According to a preferred embodiment, the backup water supply pipeline is provided with a second ball valve, a Y-type filter unit, a backup pump, a second check valve, a second electric butterfly valve and a second automatic water filter in sequence from upstream to downstream.

[0008] According to a preferred embodiment, both the Y-type filter unit and the Y-type filter unit are box-shaped structures. The upper first side of the box-shaped structure is provided with a first connecting flange, which is connected to the technical water supply. The upper second side of the box-shaped structure is provided with a second connecting flange, which is connected to the water inlet of the main pump / standby pump. The lower first side of the box-shaped structure is provided with a third connecting flange, which is connected to the water inlet of the drain ball valve.

[0009] According to a preferred embodiment, the drain ball valve is an electric drain ball valve.

[0010] According to a preferred embodiment, a pressure gauge and a flow meter are configured downstream of the standby pump. The signal output terminals of the pressure gauge and the flow meter are both connected to the signal input terminal of the controller. The signal output terminal of the controller is connected to the signal input terminal of the electric sewage ball valve.

[0011] According to a preferred embodiment, a fourth connecting flange is provided on the lower third side of the box structure, and an observation window is provided on the fourth connecting flange. The lower third side is adjacent to the lower first side.

[0012] According to a preferred embodiment, the box body is provided with a grid inside, the grid is arranged at an angle, wherein the lower end of the grid is connected to the lower end of the first connecting flange, and the upper end of the grid is connected to the inner top wall of the box body structure.

[0013] The technical solution of the water supply system for a hydro-generator provided by this utility model has at least the following advantages and beneficial effects: (1) The parallel design of the main water supply pipeline and the backup water supply pipeline can realize the switching of the main and backup water supply circuits. When the main water supply pipeline fails, the backup water supply pipeline can be put into use immediately to ensure the continuity of the technical water supply and avoid the interruption of unit cooling due to a single pipeline failure, thereby improving the reliability and stability of the hydro-generator technical water supply system; the Y-type filter unit on the backup water supply pipeline is set upstream of the backup pump, which can intercept long objects, fish and large particles in the water in advance, prevent these foreign objects from entering the backup pump, avoid foreign objects from jamming the backup pump impeller, reduce the frequency of backup pump failure, and ensure the normal operation of the backup pump, thereby ensuring that the entire water supply system can reliably operate when the main pump fails. Switch to the backup circuit; the Y-type filter unit also provides a larger storage capacity for dirt, thereby reducing the frequency of cleaning; (2) The setting of the observation window allows for direct observation of the foreign matter accumulation in the Y-type filter unit and the operating status of the grid. The staff can understand its internal condition in a timely manner without disassembling the Y-type filter unit, making it easier to determine whether it needs to be drained or cleaned, thus improving the convenience and timeliness of maintenance, and avoiding the blockage of the Y-type filter unit due to excessive foreign matter accumulation, which affects the normal operation of the backup water supply pipeline; (3) The setting of the electric drain ball valve enables the automatic draining of the Y-type filter unit without manual intervention, ensuring the timeliness of draining, and avoiding the blockage of the Y-type filter unit due to untimely manual inspection, which affects the normal operation of the backup water supply pipeline, thus improving the automation level and reliability of the system. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the water supply system for the hydro-generator technology provided in Embodiment 1 of this utility model; Figure 2 This is a schematic diagram of the structure of the Y-type filter unit provided in Embodiment 2 of this utility model; Figure 3 This is a structural block diagram of the electric sewage ball valve control provided in Embodiment 2 of this utility model; Reference numerals: 100-Main water supply pipeline, 110-First ball valve, 120-Main pump, 130-First check valve, 140-First electric butterfly valve, 150-First automatic water filter, 200-Backup water supply pipeline, 210-Second ball valve, 220-Y-type filter unit, 221-First connecting flange, 222-Second connecting flange, 223-Third connecting flange, 224-Sewage ball valve, 225-Fourth connecting flange, 226-Observation window, 227-Grate, 230-Backup pump, 240-Second check valve, 250-Second electric butterfly valve, 260-Second automatic water filter, 300-Technical water supply. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0016] Example 1 This embodiment provides a water supply system based on hydro-generator technology. Figure 1 See the schematic diagram of the water supply system for this hydro-generator technology. Figure 1 As shown, the water supply system for the hydro-generator technology includes a main water supply pipeline 100 and at least one backup water supply pipeline 200.

[0017] The inlet ends of the main water supply pipeline 100 and the backup water supply pipeline 200 are both connected to the technical water supply 300, and the outlet ends of the main water supply pipeline 100 and the backup water supply pipeline 200 are both connected to the inlet ends of each water-using unit, such as generators, bearings and transformers.

[0018] Specifically, the parallel design of the main water supply pipeline 100 and the backup water supply pipeline 200 enables the switching between the main and backup water supply circuits. When the main water supply pipeline 100 fails, the backup water supply pipeline 200 can be put into use immediately, ensuring the continuity of the technical water supply 300 and avoiding the interruption of unit cooling due to a single pipeline failure. This improves the reliability and stability of the turbine generator technical water supply system. The Y-type filter unit 220 is located upstream of the main pump 120 / backup pump 230. It can pre-intercept long objects, fish, and larger particulate impurities in the water, preventing these foreign objects from entering the main pump 120 / backup pump 230 and avoiding foreign objects from jamming the impeller of the backup pump 230. This reduces the frequency of failures of the main pump 120 / backup pump 230 and ensures the normal operation of the main pump 120 / backup pump 230. This ensures that the entire water supply system can reliably switch to another water supply pipeline when the main pump 120 / backup pump 230 fails.

[0019] In some embodiments of this example, the main water supply pipeline 100 is provided with a first ball valve 110, a Y-type filter unit 220, a main pump 120, a first check valve 130, a first electric butterfly valve 140, and a first automatic water filter 150 sequentially from upstream to downstream. The functions of each device are explained below: The first ball valve 110 can be used to cut off or connect the water source of the main water supply pipeline 100, facilitating the inspection and maintenance of the main water supply pipeline 100; the main pump 120 provides power to the technical water supply 300, ensuring that the water supply pressure and flow meet the needs of each water-using unit of the unit; the first check valve 130 can prevent backflow of water in the main water supply pipeline 100, avoiding damage to the main pump 120 when it stops; the first electric butterfly valve 140 can realize remote control and automatic adjustment of the main water supply pipeline 100, improving the automation level of the system; the first automatic water filter 150 can further filter out fine impurities in the water, ensuring water quality and improving the cooling effect of the unit.

[0020] The backup water supply pipeline 200 is equipped with a Y-type filter unit 220, which is located upstream of the backup pump 230 in the backup water supply pipeline 200. Specifically, the backup water supply pipeline 200 is provided with a second ball valve 210, a Y-type filter unit 220, a backup pump 230, a second check valve 240, a second electric butterfly valve 250, and a second automatic water filter 260 in sequence from upstream to downstream. It should be noted that the structural composition of the backup water supply pipeline 200 in this embodiment is the same as that of the main water supply pipeline 100, and the technical effects are the same, so it will not be repeated here.

[0021] Example 2 This embodiment, based on the technical solution provided in Embodiment 1, further explains the structure of the Y-type filter unit 220: In this embodiment, see Figure 2 As shown, the Y-type filter unit 220 has a box structure. A first connecting flange 221 is located on the upper first side of the box structure, connecting to the technical water supply 300, allowing water to flow into the box structure. A second connecting flange 222 is located on the upper second side of the box structure, connecting to the inlet of the main pump 120 / standby pump 230. Water filtered by the Y-type filter unit 220 enters the main pump 120 / standby pump 230 through the second connecting flange 222, protecting the main pump 120 / standby pump 230. A third connecting flange 223 is located on the lower first side of the box structure, connecting to the inlet of the drain ball valve 224, facilitating the discharge of accumulated foreign matter inside the box structure. This box structure allows for thorough filtration of water within the box, intercepting foreign matter and facilitating drainage, enabling timely removal of accumulated foreign matter and ensuring the filtration efficiency of the Y-type filter unit 220.

[0022] Furthermore, the drain ball valve 224 is an electric drain ball valve 224 to achieve automatic draining. Specifically, a pressure gauge and a flow meter are configured downstream of the standby pump 230, see [link to relevant documentation]. Figure 3 As shown, the signal output terminals of the pressure gauge and flow meter are both connected to the signal input terminal of the controller, and the signal output terminal of the controller is connected to the signal input terminal of the electric drain ball valve 224. The pressure gauge and flow meter downstream of the standby pump 230 monitor the pressure and flow rate of the standby water supply pipeline 200 in real time and transmit the signals to the controller. When the pressure and flow rate are lower than the set values, the controller determines that there may be a large amount of foreign matter accumulated in the Y-type filter unit and automatically controls the electric drain ball valve 224 to open for drainage. This control method enables automatic drainage of the Y-type filter unit without manual intervention, ensuring timely drainage and preventing blockage of the Y-type filter unit due to untimely manual inspection, which could affect the normal operation of the main and standby water supply pipelines 200, thus improving the automation level and reliability of the system.

[0023] Furthermore, a fourth connecting flange 225 is provided on the lower third side of the housing structure, and an observation window 226 is provided on the fourth connecting flange 225. The lower third side is adjacent to the lower first side. The observation window 226 allows for direct observation of the accumulation of foreign matter inside the Y-type filter unit 220 and the operating status of the grille 227. Operators can understand the internal condition of the Y-type filter unit 220 without disassembling it, facilitating the determination of whether sewage discharge or cleaning is necessary. This improves the convenience and timeliness of maintenance, preventing the Y-type filter unit 220 from becoming clogged due to excessive accumulation of foreign matter, thus affecting the normal operation of the main and backup water supply pipelines 200.

[0024] The housing is equipped with a grille 227 arranged at an angle. The lower end of the grille 227 is connected to the lower end of the first connecting flange 221, and the upper end of the grille 227 is connected to the inner top wall of the housing structure. This angled design of the grille 227 can reduce the impact of water flow, allowing the water to flow smoothly within the housing and improving the filtration effect. At the same time, the angled grille 227 can guide foreign objects to gather at the bottom of the housing, facilitating the collection and discharge of foreign objects, reducing the accumulation of foreign objects on the grille 227, reducing the risk of clogging the grille 227, improving the dirt storage capacity and filtration efficiency of the Y-type filter unit, and extending its cleaning cycle.

[0025] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A water supply system based on hydro-generator technology, characterized in that, It includes a main water supply pipeline (100) and at least one backup water supply pipeline (200). The inlet ends of the main water supply pipeline (100) and the backup water supply pipeline (200) are both connected to the technical water supply (300). The outlet ends of the main water supply pipeline (100) and the backup water supply pipeline (200) are both connected to the inlet ends of each water-using unit of the unit. The main water supply pipeline (100) and the backup water supply pipeline (200) are each equipped with a Y-type filter unit (220). The Y-type filter unit (220) is located upstream of the main pump (120) / backup pump (230) in the corresponding pipeline.

2. The water supply system based on the hydro-generator technology as described in claim 1, characterized in that, The main water supply pipeline (100) is provided with a first ball valve (110), a Y-type filter unit (220), a main pump (120), a first check valve (130), a first electric butterfly valve (140) and a first automatic water filter (150) from upstream to downstream.

3. The water supply system based on the hydro-generator technology as described in claim 1, characterized in that, The backup water supply pipeline (200) is provided with a second ball valve (210), a Y-type filter unit (220), a backup pump (230), a second check valve (240), a second electric butterfly valve (250) and a second automatic water filter (260) from upstream to downstream.

4. The water supply system based on the hydro-generator technology as described in claim 3, characterized in that, Both the Y-type filter unit (220) and the Y-type filter unit (220) are box-shaped structures. The upper first side of the box-shaped structure is provided with a first connecting flange (221), which is connected to the technical water supply (300). The upper second side of the box-shaped structure is provided with a second connecting flange (222), which is connected to the water inlet of the main pump (120) / standby pump (230). The lower first side of the box-shaped structure is provided with a third connecting flange (223), which is connected to the water inlet of the drain ball valve (224).

5. The water supply system based on the hydro-generator technology as described in claim 4, characterized in that, The drain ball valve (224) is an electric drain ball valve (224).

6. The water supply system based on the hydro-generator technology as described in claim 5, characterized in that, A pressure gauge and a flow meter are configured downstream of the standby pump (230). The signal output terminals of the pressure gauge and the flow meter are connected to the signal input terminal of the controller. The signal output terminal of the controller is connected to the signal input terminal of the electric sewage ball valve (224).

7. The water supply system based on the hydro-generator technology as described in any one of claims 4 to 6, characterized in that, The lower third side of the box structure is provided with a fourth connecting flange (225), and the fourth connecting flange (225) is provided with an observation window (226). The lower third side is the adjacent side of the lower first side.

8. The water supply system based on the hydro-generator technology as described in claim 7, characterized in that, The box body is provided with a grid (227) inside. The grid (227) is arranged at an angle. The lower end of the grid (227) is connected to the lower end of the first connecting flange (221), and the upper end of the grid (227) is connected to the inner top wall of the box body structure.

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