Water inlet and exhaust device of water turbine of pumped storage power station

Abstract

The utility model discloses a water inlet and exhaust device for a water turbine of a pumped storage power station, which comprises a water conduit (1), a gas collecting hood (2) arranged in the water conduit (1), an intercepting frame (3) arranged on the front side of the gas collecting hood (2), a baffle (4) arranged on the intercepting frame (3) and capable of moving relative to the intercepting frame (3), a control chamber (5) arranged on the gas collecting hood (2), and a detection switch (6) arranged at the water inlet end of the water conduit (1). A control switch (8) used for controlling the baffle (4) to move is arranged in the water diversion pipe (1), a releasing opening (22) is formed in one side, on the rear side of the baffle (4), of the water diversion pipe (1), and a first control valve (23) is arranged in the releasing opening (22). While exhausting, impurities in water can be cleaned, and the reliability is good.

Description

Technical Field

[0001] The utility model relates to a water inlet and exhaust device for a water turbine, in particular to a water inlet and exhaust device for a water turbine of a pumped storage power station. Background Art

[0002] A water turbine is a device that uses the energy of water flow to perform mechanical work. Its working principle is: the water flow impacts the blades of the water turbine, causing it to rotate, and then this rotational motion is converted into other forms of energy through mechanical devices. Water turbines can be divided into several types according to their working principles and structural characteristics: dynamic pressure water turbine: This type of water turbine mainly relies on the kinetic energy of the water flow to drive the impeller to rotate. For example, the Pelton wheel is a dynamic pressure water turbine; static pressure water turbine: This type of water turbine mainly relies on the static pressure of the water flow to drive the impeller to rotate. For example, the Francis wheel is a static pressure water turbine; hybrid water turbine: This type of water turbine uses both the kinetic energy of the water flow and its static pressure to drive the impeller to rotate. For example, the Kaplan wheel is a hybrid water turbine. Water turbines play a very important role in hydropower generation. They convert the energy of water flow into mechanical energy, and then convert it into electrical energy through generators. In addition, water turbines are also commonly used in various industrial and agricultural production to drive various mechanical equipment.

[0003] The power generation efficiency of the turbine will be affected by the head and flow rate. When the turbine is taking in water, gas is easily carried in the pipe, and these gases will not only affect the efficiency of the turbine, but also easily damage the turbine. Therefore, it is necessary to remove the gas carried by the water inlet in time. In addition, there are often impurities in the incoming water, which will affect the movement of the turbine and cause damage to the turbine. Utility Model Content

[0004] The utility model aims to provide a water inlet and exhaust device for a water turbine of a pumped storage power station, which can clean up debris in the water while exhausting the air and has good reliability.

[0005] The technical solution of the utility model is as follows: a water inlet and exhaust device for a water turbine in a pumped-storage power station comprises a water diversion pipe, an air collecting hood is arranged in the water diversion pipe, an interception frame is arranged in the front side of the air collecting hood, a baffle movable relative to the interception frame is arranged on the interception frame, a control room is arranged on the air collecting hood, a detection switch is arranged at the water inlet end of the water diversion pipe, a control switch for controlling the movement of the baffle is arranged in the water diversion pipe, a discharge port is arranged on one side of the water diversion pipe at the rear side of the baffle, a first control valve is arranged in the discharge port; a driving mechanism is arranged on one side of the baffle, the driving mechanism comprises a vertically arranged screw rod, a screw rod seat connected to the baffle is arranged on the screw rod; a guide block corresponding to the interception frame is arranged on the baffle, and a sealing layer is arranged on the outer side of the baffle and the guide block.

[0006] In the aforementioned pumped-storage power station turbine water inlet and exhaust device, a support plate is provided on the baffle side facing away from the interception frame, a guide plate is provided on one side of the support plate, the guide plate is installed on the baffle through the first drive shaft at the bottom end, and a guide hole corresponding to the position of the support plate is provided on the lower side of the baffle.

[0007] In the aforementioned pumped storage power station turbine water intake and exhaust device, the support plate is an L-shaped support plate in cross section, the support plate is mounted on the baffle plate via the second drive shaft, and a flow groove is provided in the support plate.

[0008] In the aforementioned pumped storage power station turbine water intake and exhaust device, the discharge device includes a discharge pipe connected to the side wall of the control chamber, and a second control valve is provided at the interface between the discharge pipe and the control chamber.

[0009] In the aforementioned water intake and exhaust device for a turbine in a pumped storage power station, a guide groove corresponding to the guide block is provided in the interception frame.

[0010] Compared with the prior art, the utility model has the following advantages:

[0011] 1. The present application sets up a gas collecting hood to collect gas in the water diversion pipe to reduce the damage caused by gas to the turbine, and the interception frame can intercept debris in the water to prevent the accumulation of debris from affecting the flow of water;

[0012] 2. The present application provides a baffle on the interception frame, the height of which can be adjusted according to the water flow rate to achieve flow control, and through the function of the support plate, the debris is guided to the control room and discharged from the discharge device to reduce the accumulation of debris;

[0013] 3. A detection switch is provided at the water inlet end of the water diversion pipe of the present application. If a fish signal is detected, the guide plate can be rotated to guide the fish to the release port to release the fish, thereby avoiding damage to the turbine caused by the fish and reducing damage to the fish. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model;

[0015] Figure 2 It is a structural schematic diagram of the baffle of the utility model.

[0016] The marks in the accompanying drawings are: 1-water diversion pipe, 2-gas collecting hood, 3-interception frame, 4-baffle, 5-control room, 6-detection switch, 7-discharge device, 8-control switch, 9-screw rod, 10-screw rod seat, 11-guide block, 12-sealing layer, 13-support plate, 14-guide plate, 15-second drive shaft, 16-flow groove, 17-discharge pipe, 18-second control valve, 19-guide groove, 20-first drive shaft, 21-diversion hole, 22-release port. DETAILED DESCRIPTION

[0017] The technical solution of the utility model is further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0018] Embodiment. A water inlet and exhaust device for a water turbine of a pumped storage power station, comprising: Figure 1-2 As shown, it includes a water diversion pipe 1, in which an air collecting hood 2 is provided, an interception frame 3 is provided on the front side of the air collecting hood 2, a baffle 4 which can move relative to the interception frame 3 is provided on the interception frame 3, a control room 5 is provided on the air collecting hood 2, a detection switch 6 is provided at the water inlet end of the water diversion pipe 1, a control switch 8 for controlling the movement of the baffle 4 is provided in the water diversion pipe 1, a release port 22 is provided on one side of the water diversion pipe 1 behind the baffle 4, and a first control valve 23 is provided in the release port 22.

[0019] A driving mechanism is provided on one side of the baffle 4 , and the driving mechanism includes a vertically arranged screw rod 9 , on which a screw rod seat 10 connected to the baffle 4 is provided.

[0020] The baffle plate 4 is provided with a guide block 11 corresponding to the interception frame 3 , and a sealing layer 12 is provided on the outer side of the baffle plate 4 and the guide block 11 .

[0021] The baffle plate 4 is provided with a support plate 13 on the side facing away from the interception frame 3, and a guide plate 14 is provided on one side of the support plate 13. The guide plate 14 is installed on the baffle plate 4 through a first drive shaft 20 at the bottom end, and a guide hole 21 corresponding to the position of the support plate 13 is provided on the lower side of the baffle plate 4.

[0022] The support plate 13 is an L-shaped support plate in cross section. The support plate 13 is mounted on the baffle plate 4 via a second drive shaft 15 . A flow channel 16 is provided in the support plate 13 .

[0023] The discharge device 7 comprises a discharge pipe 17 connected to the side wall of the control chamber 5 , and a second control valve 18 is provided at the interface between the discharge pipe 17 and the control chamber 5 .

[0024] The intercepting frame 3 is provided with a guide groove 19 corresponding to the guide block 11 .

[0025] The water will flow along the water pipe 1. The water pipe 1 is provided with a gas collecting hood 2, which can collect the gas in the water pipe 1 and discharge the gas along the control room 5. The water pipe 2 is also provided with an interception frame 3, which can intercept the debris entering the water pipe 1. When the control switch 8 detects that there is a lot of debris accumulation, the baffle moves down, so that the debris can move along the flow channel, enter the support plate, and then flip the support plate and send it out from the discharge pipe of the control room. The water can pass through the flow channel and the guide hole normally. When the amount of water in the water pipe 1 is too large, the baffle 4 is driven to move down by the screw rod 9. There is no guide hole on the upper side of the baffle 4, which can play a role in regulating the water flow and preventing uneven water flow from affecting the movement of the turbine. And when the detection switch 6 receives a fish signal, the guide plate 14 is controlled to rotate around the first drive shaft 20. A driving device, such as a motor, is provided at one end of the first drive shaft 20 and the second drive shaft 15, which is not shown in the figure. At the same time, the release port 22 is opened so that the fish can swim along the guide plate 14 and be released from the release port, thereby protecting the fish.

Claims

1. A water inlet and exhaust device for a turbine of a pumped storage power station, characterized in that: The invention comprises a water diversion pipe (1), wherein the water diversion pipe (1) is provided with an air collecting hood (2), an interception frame (3) is provided on the front side of the air collecting hood (2), a baffle (4) which can move relative to the interception frame (3) is provided on the interception frame (3), a control chamber (5) is provided on the air collecting hood (2), a detection switch (6) is provided at the water inlet end of the water diversion pipe (1), a control switch (8) for controlling the movement of the baffle (4) is provided in the water diversion pipe (1), a release port (22) is provided on one side of the water diversion pipe (1) at the rear side of the baffle (4), a first control valve (23) is provided in the release port (22), and the baffle (4) is provided with a detection switch (6) at the water inlet end of the water diversion pipe (1), a control switch (8) for controlling the movement of the baffle (4) is provided in the water diversion pipe (1), a release port (22) is provided on one side of the water diversion pipe (1) at the rear side of the baffle (4), a first control valve (23) is provided in the release port (22), and a detection switch (6) is provided at the water inlet end of the water diversion pipe (1), a control switch (8) for controlling the movement of the baffle (4) is provided in the water diversion pipe (1 ... a detection switch (6) is provided at the water inlet end of the water diversion pipe (1), a control switch (8) for controlling the movement of the baffle (4) is provided in the water diversion pipe (1), a detection switch (6) is provided at the water inlet end of the water diversion pipe (1), a control switch (8) for controlling the movement of the baffle (4) is provided in the water diversion pipe A driving mechanism is provided on one side of the plate (4), the driving mechanism comprising a vertically arranged screw rod (9), a screw rod seat (10) connected to the baffle plate (4) is provided on the screw rod (9), a guide block (11) corresponding to the interception frame (3) is provided on the baffle plate (4), and a sealing layer (12) is provided on the outer side of the baffle plate (4) and the guide block (11); a discharge device (7) is provided on one side of the control chamber (5), the discharge device (7) comprising a discharge pipe (17) connected to the side wall of the control chamber (5), and a second control valve (18) is provided at the interface between the discharge pipe (17) and the control chamber (5).

2. A water inlet and exhaust device for a water turbine of a pumped storage power station according to claim 1, characterized in that: The baffle (4) is provided with a support plate (13) on the side facing away from the interception frame (3), and a guide plate (14) is provided on one side of the support plate (13). The guide plate (14) is installed on the baffle (4) through a first drive shaft (20) at the bottom end, and a guide hole (21) corresponding to the position of the support plate (13) is provided on the lower side of the baffle (4).

3. A water inlet and exhaust device for a water turbine of a pumped storage power station according to claim 2, characterized in that: The support plate (13) is an L-shaped support plate in cross section. The support plate (13) is mounted on the baffle (4) via a second drive shaft (15). A flow groove (16) is provided in the support plate (13).

4. A water inlet and exhaust device for a water turbine of a pumped storage power station according to claim 1, characterized in that: The intercepting frame (3) is provided with a guide groove (19) corresponding to the guide block (11).

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