Water source circulating pipeline of water turbine

Abstract

The utility model relates to the technical field of industrial circulating cooling water, in particular to a water turbine water source circulating pipeline which comprises a main horizontal pipe. The device further comprises an upper connecting pipe, a water turbine water outlet pipe, a first lower connecting pipe, a first welding pipe, a water blocking pipe, a first electromagnetic valve and a vertical water pipe. Cooling water is discharged into the water blocking pipe through the output end of the water turbine in the cooling tower, at the moment, the H2010B rotating speed sensor and the LDE-TD2F1130 electromagnetic flow sensor in the water turbine transmit detected rotating speed and water flow speed data to the external PLC, and the opening degree of the first electromagnetic valve is controlled through the external PLC with preset parameters. The cooling water in the water blocking pipe flows into the vertical water pipe through the first electromagnetic valve, and the water flows in two flow directions collide with each other at the first time when the cooling water in the water blocking pipe flows into the vertical water pipe, so that the speed of the water flows in the vertical water pipe is reduced, and the function of dynamic flow regulation is realized.

Description

Technical Field

[0001] This utility model relates to the field of industrial circulating cooling water technology, and in particular to water turbine water source circulation pipelines. Background Technology

[0002] In the design of circulating cooling water systems, there is often a margin of safety in the selection of water pumps. This makes replacing electric motors with water turbines and changing from electric drive to water drive the primary solution for cooling tower retrofitting. This retrofitting does not increase the power of the original water pumps, and saves on the power consumption of cooling tower fans while ensuring that the circulating water temperature remains unchanged.

[0003] Common water turbine circulation pipes only function to transport cooling water, enabling circulation but lacking dynamic flow regulation. This prevents the turbine speed from being adjusted to meet actual needs. As a result, cooling water enters the turbine at a constant velocity from the collection tank through the pipes. The water impacts the impeller, generating kinetic energy, and then flows through the drain end into the cooling tower for cooling before returning to the collection tank to complete the circulation. However, because the flow velocity of the cooling water in the pipes remains constant, the thrust exerted on the turbine by the water flow remains constant. This prevents the turbine speed from being adjusted according to demand, thus affecting the turbine's output power.

[0004] Therefore, in response to the lack of dynamic flow regulation function in the aforementioned turbine water source circulation pipeline, which makes it impossible to change the impact force of the turbine input water flow according to load demand, resulting in a constant turbine speed and uncontrollable output power, and affecting the problem that the water flow thrust during circulation cannot be flexibly matched with the speed and power through flow velocity adjustment, it is urgent to design a new type of turbine water source circulation pipeline. Utility Model Content

[0005] To overcome the common problem that water turbine circulation pipes lack dynamic flow regulation, cannot change the impact force of the water flow into the turbine according to load demand, resulting in constant turbine speed and uncontrollable output power, and affecting the problem that the water flow thrust during circulation cannot be flexibly matched with the speed and power through flow velocity adjustment.

[0006] The technical solution of this utility model is as follows: a water turbine water source circulation pipeline, including a main horizontal pipe; it also includes an upper connecting pipe, a water turbine outlet pipe, a first lower connecting pipe, a first welded pipe, a water blocking pipe, a first solenoid valve, and a vertical water pipe. Two upper connecting pipes are symmetrically arranged on the left and right sides above the main horizontal pipe. The top of the upper connecting pipe is connected to the water turbine outlet pipe. Two first lower connecting pipes are symmetrically arranged on the left and right sides below the main horizontal pipe. The bottom of the first lower connecting pipe is connected to the first welded pipe. The bottom of the first welded pipe is connected to the water blocking pipe. The water blocking pipe is equipped with a first solenoid valve. One end of the water blocking pipe is connected to the vertical water pipe.

[0007] Preferably, cooling water is discharged into the water-blocking pipe through the output end of the water turbine inside the cooling tower. At this time, a speed sensor (model H2010B) inside the water turbine detects the turbine's speed, and an electromagnetic flow sensor (model LDE-TD2F1130) detects the water flow velocity. The detected speed and flow velocity data are transmitted to an external PLC controller. The external PLC controller, with pre-set parameters, controls the opening of the first solenoid valve. The cooling water in the water-blocking pipe then flows into the vertical water pipe through the first solenoid valve. Since the cooling water in the vertical water pipe flows from bottom to top, the two flow directions collide immediately upon entering the vertical water pipe, thus... By slowing down the water flow velocity in the vertical water pipe, a dynamic flow regulation function is achieved. This addresses the common problem of water turbine circulation pipes, which only convey cooling water and circulate it through the pipes, but lack dynamic flow regulation. This prevents the turbine speed from being adjusted according to actual needs. For example, cooling water enters the turbine from the collection tank through the pipes at a constant flow rate. After the water flow impacts the impeller and generates kinetic energy, it flows through the drain end into the cooling tower for cooling and finally returns to the collection tank to complete the circulation. However, because the flow velocity of the cooling water entering the pipes remains constant, the thrust on the turbine from the water flow impact remains constant. This makes it impossible to change the turbine speed according to its needs, thus affecting the turbine's output power.

[0008] Preferably, the top of the vertical water pipe is connected to the water turbine inlet pipe, and the bottom of the vertical water pipe is connected to the first water pump pipe.

[0009] Preferably, a second solenoid valve is installed inside the first water pump pipe, and a second lower connecting pipe is installed in the middle of the lower part of the main horizontal pipe.

[0010] Preferably, the bottom end of the second lower connecting pipe is connected to a second welded pipe.

[0011] Preferably, the bottom end of the second welded pipe is connected to a spray pipe.

[0012] Preferably, one end of the spray pipe is connected to a second water pump pipe, and a third solenoid valve is installed inside the second water pump pipe.

[0013] Preferably, the main horizontal pipe, upper connecting pipe, turbine outlet pipe, first lower connecting pipe, first welded pipe, water blocking pipe, vertical water pipe, turbine inlet pipe, first water pump pipe, second lower connecting pipe, second welded pipe, spray pipe and second water pump pipe are welded together as one unit.

[0014] The beneficial effects of this utility model are:

[0015] 1. During the operation of the cooling tower turbine, cooling water is introduced into the internal cavity of the water-blocking pipe through the turbine output end. At this time, an H2010B type speed sensor installed at the turbine shaft collects the angular velocity parameters of the rotating components in real time. Simultaneously, an LDE-TD2F1130 type electromagnetic flow sensor installed in parallel accurately measures the volumetric flow rate of the cooling water in the pipe. The two sensors transmit the dynamic monitoring data synchronously to the external PLC control system via an industrial bus. Based on the preset program algorithm, the PLC performs PID calculations on the received speed and flow rate parameters to generate... The control signal drives the linear actuator of the first solenoid valve to adjust the valve core opening, thereby changing the cross-sectional area of ​​the flow from the water blocking pipe to the vertical water pipe. The cooling water in the water blocking pipe is injected into the vertically arranged vertical water pipe through the opened first solenoid valve under the action of the pressure gradient. The original water flow direction of the vertical water pipe is from bottom to top. The two fluids with opposite directions form an opposing interface in the middle section of the vertical water pipe. The combined flow velocity is significantly reduced through the fluid momentum cancellation effect, realizing closed-loop dynamic flow regulation based on the principle of energy dissipation, and finally achieving precise matching control of the impact force of the water input to the turbine and the speed. Attached Figure Description

[0016] Figure 1 The diagram shown is a schematic representation of the overall structure of the water turbine water circulation pipeline of this utility model.

[0017] Figure 2 The diagram shown is a schematic representation of the main horizontal pipe structure of the water turbine water circulation pipeline of this utility model.

[0018] Figure 3 The diagram shown is a schematic representation of the water-blocking component of the water turbine water circulation pipeline of this utility model.

[0019] Figure 4 The diagram shown is a schematic diagram of the water turbine water source circulation pipeline spray pipe structure of this utility model.

[0020] Explanation of reference numerals in the attached drawings: 1. Main horizontal pipe; 2. Upper connecting pipe; 3. Turbine outlet pipe; 4. First lower connecting pipe; 5. First welded pipe; 6. Water blocking pipe; 7. First solenoid valve; 8. Vertical water pipe; 9. Turbine inlet pipe; 10. First water pump pipe; 11. Second solenoid valve; 12. Second lower connecting pipe; 13. Second welded pipe; 14. Spray discharge pipe; 15. Second water pump pipe; 16. Third solenoid valve. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Please see Figures 1-4This utility model provides an embodiment of a water turbine water source circulation pipeline, including a main horizontal pipe 1; it also includes an upper connecting pipe 2, a water turbine outlet pipe 3, a first lower connecting pipe 4, a first welded pipe 5, a water blocking pipe 6, a first solenoid valve 7, and a vertical water pipe 8. Two upper connecting pipes 2 are symmetrically arranged on the left and right sides above the main horizontal pipe 1, and the top of the upper connecting pipe 2 is connected to the water turbine outlet pipe 3. Two first lower connecting pipes 4 are symmetrically arranged on the left and right sides below the main horizontal pipe 1, and the bottom of the first lower connecting pipe 4 is connected to the first welded pipe 8. Pipe 5, the bottom end of the first welded pipe 5 is connected to a water-blocking pipe 6, and a first solenoid valve 7 is installed inside the water-blocking pipe 6. One end of the water-blocking pipe 6 is connected to a vertical water pipe 8. Cooling water is discharged into the water-blocking pipe 6 through the output end of the water turbine inside the cooling tower. At this time, the speed sensor of model H2010B inside the water turbine detects the speed of the water turbine, and the electromagnetic flow sensor of model LDE-TD2F1130 detects the water flow velocity. The detected speed and water flow velocity data are transmitted to the external PLC controller. The external PLC controller, with pre-set parameters, controls the opening of the first solenoid valve 7. The cooling water in the water-blocking pipe 6 flows into the vertical water pipe 8 through the first solenoid valve 7. At this time, the cooling water in the vertical water pipe 8 flows from bottom to top. The two water flows collide the moment the cooling water in the water-blocking pipe 6 flows into the vertical water pipe 8, which slows down the water flow speed in the vertical water pipe 8 and realizes the function of dynamic flow regulation. This solves the problem of common water turbine water source circulation pipes, which only contain the function of transporting cooling water and can realize the circulation of cooling water through the pipe, but lack the function of dynamic flow regulation. They cannot guarantee the function of adjusting the water turbine speed according to actual needs. It is easy for the cooling water to enter the water turbine from the water collection pool through the pipe at a constant flow rate. After the water flow impacts the impeller and generates kinetic energy, it enters the cooling tower through the drain end for cooling and finally flows back into the water collection pool to complete the circulation. However, the flow rate of the cooling water entering the pipe is consistent, so the thrust of the water turbine impacted by the water flow is always consistent. This makes it impossible to change the water turbine speed according to its needs, thus affecting the water turbine output power.

[0023] Please see Figures 2-4In this embodiment, the top end of the vertical water pipe 8 is connected to the turbine inlet pipe 9, and the bottom end of the vertical water pipe 8 is connected to the first water pump pipe 10. Cooling water moves upward through the first water pump pipe 10 into the interior of the vertical water pipe 8. The cooling water in the vertical water pipe 8 moves upward to the turbine inlet pipe 9, and the cooling water in the turbine inlet pipe 9 is then transported to the turbine. The interior of the first water pump pipe 10 is equipped with a second solenoid valve 11. The middle of the lower part of the main horizontal pipe 1 is equipped with a second lower connecting pipe 12. When the second solenoid valve 11 is closed, the cooling water cannot enter the interior of the first water pump pipe 10. The bottom end of the second lower connecting pipe 12 is connected to a second welded pipe 13. Part of the cooling water that flows back in the main horizontal pipe 1 will enter the interior of the spray pipe 14 through the second welded pipe 13, and then enter the cooling tower along with the water flow in the spray pipe 14.

[0024] Please see Figures 1-4 In this embodiment, the bottom end of the second welded pipe 13 is connected to the spray pipe 14. Cooling water enters the interior of the spray pipe 14 through the second water pump pipe 15, and then is sprayed into the cooling tower through the spray pipe 14. One end of the spray pipe 14 is connected to the second water pump pipe 15. The interior of the second water pump pipe 15 is equipped with a third solenoid valve 16. When the third solenoid valve 16 is closed, cooling water cannot enter the interior of the second water pump pipe 15. The main horizontal pipe 1, the upper connecting pipe 2, the turbine outlet pipe 3, the first lower connecting pipe 4, the first welded pipe 5, the water blocking pipe 6, the vertical water pipe 8, the turbine inlet pipe 9, the first water pump pipe 10, the second lower connecting pipe 12, the second welded pipe 13, the spray pipe 14, and the second water pump pipe 15 are welded together as one unit. All pipes are welded together as one unit, which can improve the strength of the entire pipe.

[0025] During operation, the cooling water in the collection pool is pumped into the first pump pipe 10 and the second pump pipe 15 by the water pumps inside the cooling tower. The cooling water in the second pump pipe 15 moves through the vertical water pipe 8 to the turbine inlet pipe 9, and the cooling water in the turbine inlet pipe 9 is then delivered to the turbine. During the operation of the cooling tower turbine, the cooling water is introduced into the internal cavity of the water blocking pipe 6 through the turbine output end. At this time, the H2010B type speed sensor installed at the turbine shaft collects the angular velocity parameters of the rotating parts in real time, and the LDE-TD2F1130 type electromagnetic flow sensor installed in parallel accurately measures the volumetric flow rate of the cooling water in the pipe. The two sensors transmit the dynamic monitoring data synchronously to the external PLC control system through the industrial bus. Based on the preset program algorithm, the PLC performs PID calculations on the received speed and flow rate parameters and generates control signals to drive the first pump pipe 10 and the second pump pipe 15. The linear actuator of a solenoid valve 7 adjusts the valve core opening, thereby changing the cross-sectional area of ​​the flow from the water blocking pipe 6 to the vertical water pipe 8. The cooling water in the water blocking pipe 6, under the action of the pressure gradient, is injected into the vertically arranged vertical water pipe 8 through the opened first solenoid valve 7. The original water flow direction of the vertical water pipe 8 is from bottom to top. The two fluids with opposite directions form a counteracting interface in the middle section of the vertical water pipe 8. The combined flow velocity is significantly reduced through the fluid momentum cancellation effect, thereby regulating the speed of the water turbine. At the same time, the cooling water overflowing from the water blocking pipe 6 will be sprayed into the cooling tower, while the cooling water in the second water pump pipe 15 will enter the interior of the spray pipe 14 and then be sprayed into the cooling tower through the spray pipe 14. Part of the cooling water returning from the main horizontal pipe 1 will enter the interior of the spray pipe 14 through the second welded pipe 13 and then enter the cooling tower along with the water flow in the spray pipe 14, thus realizing the function of dynamic flow regulation.

[0026] Through the above steps, cooling water is discharged into the water-blocking pipe 6 through the output end of the water turbine inside the cooling tower. At this time, the speed sensor (model H2010B) inside the water turbine detects the speed of the water turbine, and the electromagnetic flow sensor (model LDE-TD2F1130) detects the water flow velocity. The detected speed and water flow velocity data are transmitted to the external PLC controller. The external PLC controller, with pre-set parameters, controls the opening of the first solenoid valve 7. The cooling water in the water-blocking pipe 6 then flows into the vertical water pipe 8 through the first solenoid valve 7. At this time, the flow direction of the cooling water in the vertical water pipe 8 is from bottom to top. The two flow directions of water will collide at the first moment when the cooling water in the water-blocking pipe 6 flows into the vertical water pipe 8. This slows down the water flow in the vertical water pipe 8, achieving dynamic flow regulation. This addresses the common problem of water turbine circulation pipes, which only transport cooling water and circulate it, but lack dynamic flow regulation. This prevents the turbine from adjusting its speed according to actual needs. For example, cooling water enters the turbine from the collection tank via pipes at a constant velocity. After impacting the impeller and generating kinetic energy, the water flows through the drain end into the cooling tower for cooling and finally returns to the collection tank to complete the circulation. However, the constant velocity of the cooling water entering the pipes means the thrust on the turbine remains constant, making it impossible to adjust the turbine's speed according to its needs, thus affecting the turbine's output power.

Claims

1. Water turbine water source circulation pipeline, comprising a total horizontal pipe (1); characterized in that: The utility model also includes upper connecting pipe (2), water turbine outlet pipe (3), first lower connecting pipe (4), first welding pipe (5), water blocking pipe (6), first electromagnetic valve (7) and vertical water pipe (8), the total horizontal pipe (1) is provided with two upper connecting pipes (2) on the two sides of the upper body symmetry, the top of upper connecting pipe (2) is connected with water turbine outlet pipe (3), the total horizontal pipe (1) is provided with two first lower connecting pipes (4) on the two sides of the lower body symmetry, the bottom of first lower connecting pipe (4) is connected with first welding pipe (5), the bottom of first welding pipe (5) is connected with water blocking pipe (6), the inside of water blocking pipe (6) is provided with first electromagnetic valve (7), one end of water blocking pipe (6) is connected with vertical water pipe (8).

2. The hydroelectric turbine water source circulation conduit of claim 1, wherein: The top of vertical water pipe (8) is connected with water turbine inlet pipe (9), and the bottom of vertical water pipe (8) is connected with first water pump pipe (10).

3. The hydroelectric turbine water source circulation conduit of claim 2, wherein: The inside of first water pump pipe (10) is provided with second electromagnetic valve (11), and the middle of the total horizontal pipe (1) is provided with second lower connecting pipe (12) below the body.

4. The hydroelectric turbine water source circulation conduit of claim 3, wherein: The bottom of second lower connecting pipe (12) is connected with second welding pipe (13).

5. The hydroelectric turbine water source circulation conduit of claim 4, wherein: The bottom of second welding pipe (13) is connected with spray pipe (14).

6. The hydroelectric turbine water source circulation conduit of claim 5, wherein: One end of spray pipe (14) is connected with second water pump pipe (15), and the inside of second water pump pipe (15) is provided with third electromagnetic valve (16).

7. The hydroelectric turbine water source circulation conduit of claim 6, wherein: The total horizontal pipe (1), upper connecting pipe (2), water turbine outlet pipe (3), first lower connecting pipe (4), first welding pipe (5), water blocking pipe (6), vertical water pipe (8), water turbine inlet pipe (9), first water pump pipe (10), second lower connecting pipe (12), second welding pipe (13), spray pipe (14) and second water pump pipe (15) are integrated by welding.

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