Hydropower station joint speed regulator with pressure balance structure

Abstract

The utility model discloses a hydropower station joint governor with a pressure balance structure, which comprises a water pipe and a governor body, a connecting ring is fixedly mounted on the outer surface of the water pipe, the governor body is fixedly mounted on the upper surface of the connecting ring, the connecting ring is connected with the pressure balance structure, and the pressure balance structure is connected with the governor body. The pressure balancing structure can balance partial pressure through cooperation of a first partial pressure pipe and a second partial pressure pipe, the pressure balancing structure comprises a water wheel, the lower end of the speed regulator body is in control connection with the water wheel, the front surface of a connecting ring is connected with the first partial pressure pipe in a penetrating mode, and the first partial pressure pipe is installed on the front surface of a balancing pipe in a penetrating mode. The rear surface of the connecting ring is connected with a second partial pressure pipe in a penetrating mode. According to the hydropower station joint governor with the pressure balance structure, the pressure balance structure is arranged, the pressure on the two sides of the water wheel can be adjusted through the balance pipe, the pressure adjusting structure is further arranged, the corrugated pipe can stretch after pressure division, and the pressure adjusting valve is triggered to adjust the water pressure.

Description

Technical Field

[0001] The utility model relates to the technical field of hydroelectric governor, in particular to a combined governor for a hydropower station with a pressure balance structure. Background Technique

[0002] The governor automatically adjusts the opening of the turbine guide vane and the blade angle by sensing the change of the unit speed, so that the unit can maintain a stable speed and output power under different working conditions, and coordinates and controls the actions of the guide vane and the blade according to the preset to achieve the optimal hydraulic performance and power generation efficiency.

[0003] When the governor adjusts the turbine, it will cause the change of the water flow velocity, and the inlet and outlet pressures are unbalanced when changing, which hinders the adjustment of the guide vane opening and the blade angle, resulting in inaccurate control of the unit speed and affecting the adjustment stability. Content of the Utility Model

[0004] The purpose of the utility model is to provide a combined governor for a hydropower station with a pressure balance structure to solve the problem that the change of water pressure caused by the water flow velocity affects the turbine adjustment in the above-mentioned background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: a combined governor for a hydropower station with a pressure balance structure, including a water pipe, on the outer surface of which a connecting ring is fixedly installed, and it is characterized in that: it further includes a governor body, the governor body is fixedly installed on the upper surface of the connecting ring, the connecting ring is connected with a pressure balance structure, the pressure balance structure can balance the partial pressure through the cooperation of a first partial pressure pipe and a second partial pressure pipe, the pressure balance structure includes a water turbine, the lower end of the governor body is controllably connected with the water turbine, the front surface of the connecting ring is through-connected with a first partial pressure pipe, the first partial pressure pipe is through-installed on the front surface of a balance pipe, the rear surface of the connecting ring is through-connected with a second partial pressure pipe, the lower end of the second partial pressure pipe penetrates the rear surface of the balance pipe, the balance pipe is fixedly installed on the upper surface of a bottom plate, and a sliding pipe is fixedly installed inside the balance pipe.

[0006] Preferably, a sliding rod is slidably installed in the center of the sliding pipe, and pressing plates are fixedly installed at both ends of the sliding rod.

[0007] Adopting the above technical solution enables the pressure before and after the adjustment of the water turbine to be balanced.

[0008] Preferably, the water turbine is located inside the water pipe.

[0009] Adopting the above technical solution facilitates the control of the water flow.

[0010] Preferably, the bottom plate is further connected with a pressure regulating structure, and the pressure regulating structure can trigger the opening of a pressure regulating valve through a corrugated pipe.

[0011] With the above technical solution, the water pressure can be further adjusted through the pressure regulating structure.

[0012] Preferably, the pressure regulating structure includes a fixing plate fixedly installed on the upper surface of the bottom plate. A bellows is fixedly connected to the side surface of the fixing plate. The bellows is connected to the side surface of the balance pipe in a penetrating manner. The other end of the bellows is fixedly connected to a sliding block. The sliding block is slidably installed on the upper surface of the bottom plate. A pressure regulating valve is fixedly installed on the outer surface of the water pipe, and an infrared sensor is fixedly installed at the lower end of the pressure regulating valve.

[0013] With the above technical solution, the infrared sensor can be triggered to start adjustment through the bellows.

[0014] Preferably, 2 pressure regulating valves are symmetrically installed.

[0015] With the above technical solution, the water pressure can be adjusted on both the water inlet and outlet sides.

[0016] Preferably, the sliding block is provided with an L-shaped structure.

[0017] With the above technical solution, it is convenient to limit the expansion and contraction of the bellows.

[0018] Compared with the prior art, the beneficial effects of the present utility model are as follows: The hydroelectric turbine governor with a pressure balance structure:

[0019] 1. The hydroelectric turbine governor is provided with a pressure balance structure. During use, when the water turbine adjusts and the flow velocity changes, different water pressures will be formed on both sides of the water turbine. At this time, the water pressure can be shared through the first pressure dividing pipe and the second pressure dividing pipe, so that the water pressure can push the pressing plate to form a balance.

[0020] 2. Further, after the pressure on both sides of the water turbine is balanced, when the water turbine adjusts the impeller during speed regulation, the water flow is more stable, enabling the water turbine to be stably adjusted, avoiding the influence of water flow fluctuations on the adjustment accuracy, and reducing the water pressure on the water turbine.

[0021] 3. Further, a pressure regulating structure is also provided. When the water pressure pushes the pressing plate, the water pressure in the balance pipe will enter the two bellows respectively. The bellows is compressed and stretched, and the infrared sensor will be triggered to further adjust the water pressure through the pressure regulating valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the axonometric surface structure of the present utility model;

[0023] Figure 2 It is a schematic diagram of the cross-sectional structure of the present utility model in a top view;

[0024] Figure 3Schematic diagram of the upward view surface structure of the present utility model;

[0025] Figure 4 Schematic diagram of the axonometric surface structure of the balance pipe of the present utility model;

[0026] Figure 5 Schematic diagram of the side sectional structure of the present utility model;

[0027] Figure 6 Schematic diagram of the axonometric surface structure of the corrugated pipe of the present utility model.

[0028] In the figure: 1, water pipe; 2, connecting ring; 3, governor body; 4, water turbine; 5, pressure dividing pipe one; 6, pressure dividing pipe two; 7, balance pipe; 8, bottom plate; 9, sliding pipe; 10, pressing plate; 11, fixing plate; 12, corrugated pipe; 13, sliding block; 14, pressure regulating valve; 15, infrared sensor. Specific implementation manner

[0029] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0030] Please refer to Figure 1-6 , the present utility model provides a technical solution: a hydropower station combined governor provided with a pressure balance structure, including a water pipe 1, a connecting ring 2, a governor body 3, a water turbine 4, a pressure dividing pipe one 5, a pressure dividing pipe two 6, a balance pipe 7, a bottom plate 8, a sliding pipe 9, a pressing plate 10, a fixing plate 11, a corrugated pipe 12, a sliding block 13, a pressure regulating valve 14, and an infrared sensor 15.

[0031] Embodiment 1: The hydropower station combined governor is provided with a pressure balance structure, and can adjust the water pressure balance before and after the water turbine 4 through the balance pipe 7. Specifically:

[0032] A connecting ring 2 is fixedly installed on the outer surface of the water pipe 1. It further includes a governor body 3 which is fixedly installed on the upper surface of the connecting ring 2. The connecting ring 2 is connected with a pressure balance structure. The pressure balance structure can balance the pressure through the cooperation of the first pressure dividing pipe 5 and the second pressure dividing pipe 6. The pressure balance structure includes a water turbine 4. The lower end of the governor body 3 is controllably connected to the water turbine 4. The front surface of the connecting ring 2 is connected through the first pressure dividing pipe 5. The first pressure dividing pipe 5 is installed through the front surface of the balance pipe 7. The rear surface of the connecting ring 2 is connected through the second pressure dividing pipe 6. The lower end of the second pressure dividing pipe 6 penetrates the rear surface of the balance pipe 7. The balance pipe 7 is fixedly installed on the upper surface of the bottom plate 8. A sliding pipe 9 is fixedly installed inside the balance pipe 7. A sliding rod is slidably installed at the center of the sliding pipe 9. Both ends of the sliding rod are fixedly installed with pressing plates 10. The water turbine 4 is located inside the water pipe 1;

[0033] When the hydroelectric plant combined governor is in use, as Figure 1 shown, the connecting ring 2 fixedly installed on the outer surface of the water pipe 1 is connected with the governor body 3. As Figure 5 shown, through the governor body 3, the water turbine 4 can be controlled for adjustment, thereby controlling the water flow velocity. When the water turbine 4 is adjusted, due to the change in the water flow rate, pressures will be formed on both sides of the water turbine 4, making the adjustment of the water turbine 4 unstable. At this time, the first pressure dividing pipe 5 and the second pressure dividing pipe 6 are respectively connected through the outer surface of the connecting ring 2 on both the inlet and outlet sides of the water turbine 4. At this time, the water pressures formed on both sides of the water turbine 4 will enter the balance pipe 7 through the first pressure dividing pipe 5 and the second pressure dividing pipe 6. As Figure 2 shown, in the balance pipe 7, it is divided into two parts by the sliding pipe 9. At this time, since both ends of the sliding rod slidably installed at the center of the sliding pipe 9 are fixedly installed with pressing plates 10. Therefore, the water pressures entering through the first pressure dividing pipe 5 and the second pressure dividing pipe 6 will push the two pressing plates 10, causing the pressing plates 10 connected to the pressing plates 10 to move, thereby balancing the water pressure inside the balance pipe 7, relieving the water pressure formed on both sides of the water turbine 4, making the water turbine 4 more stable, avoiding the uneven force on the water turbine 4 due to the excessive pressure difference between the front and back, reducing the wear of the water turbine 4 and its related components, extending the service life of the equipment, effectively preventing sudden pressure changes before and after the water turbine 4, and reducing damage caused by pressure shocks.

[0034] Embodiment 2: The hydroelectric plant combined governor is further provided with a pressure regulating structure. After the bellows 12 is pressed, the pressure regulating valve 14 will be triggered to further regulate the water pressure. Specifically:

[0035] The bottom plate 8 is also connected with a pressure regulating structure, which can trigger the opening of the pressure regulating valve 14 through the bellows 12. The pressure regulating structure includes a fixing plate 11, which is fixedly installed on the upper surface of the bottom plate 8. A bellows 12 is fixedly connected to the side surface of the fixing plate 11. The bellows 12 is connected to the side surface of the balance pipe 7 in a through manner. The other end of the bellows 12 is fixedly connected with a sliding block 13. The sliding block 13 is slidably installed on the upper surface of the bottom plate 8. A pressure regulating valve 14 is fixedly installed on the outer surface of the water pipe 1. An infrared sensor 15 is fixedly installed at the lower end of the pressure regulating valve 14. Two pressure regulating valves 14 are symmetrically installed. The sliding block 13 is arranged in an L-shaped structure;

[0036] Further, when the pressure in the balance pipe 7 increases, as Figure 2 shown, bellows 12 are connected to both parts of the balance pipe 7 divided by the sliding pipe 9. At this time, the pressure in the balance pipe 7 will enter the bellows 12. The bellows 12 will expand under pressure. A fixing plate 11 is fixedly installed on one side of the bellows 12, and a sliding block 13 is fixedly connected to the other side. Therefore, when the bellows 12 expands, the sliding block 13 will slide on the upper surface of the bottom plate 8 to limit the expansion of the bellows 12. When the bellows 12 reaches below the pressure regulating valve 14, it will trigger the infrared sensor 15, and the infrared sensor 15 will cause the pressure regulating valve 14 to open. As Figure 1 shown, two pressure regulating valves 14 are installed on the outer surface of the water pipe 1, which can further regulate the pressure before and after the water enters the water turbine 4 respectively, making the water pressure more stable.

[0037] Working principle: When using the hydroelectric governor with a pressure balance structure, there is a pressure balance structure that can adjust the water pressure balance before and after the water turbine 4 through the balance pipe 7 to reduce the pressure on the water turbine 4. There is also a pressure regulating structure. When the bellows 12 is stretched after being pressed, it will trigger the pressure regulating valve 14 to further adjust the water pressure, increasing the overall practicability.

[0038] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hydropower station coordinated speed governor with a pressure balance structure, comprising a water pipe (1), a connecting ring (2) being fixedly mounted on the outer surface of the water pipe (1), characterized in that: The device also comprises a speed regulator body (3), the speed regulator body (3) being fixedly mounted on the upper surface of a connecting ring (2), the connecting ring (2) being connected to a pressure balancing structure, the pressure balancing structure being capable of balancing the pressure by means of a pressure dividing tube 1 (5) and a pressure dividing tube 2 (6), the pressure balancing structure comprising a water wheel (4), the lower end of the speed regulator body (3) being controllably connected to the water wheel (4), the front surface of the connecting ring (2) being through-connected to a pressure dividing tube 1 (5), the pressure dividing tube 1 (5) being through-connected to the front surface of a balancing tube (7), the rear surface of the connecting ring (2) being through-connected to a pressure dividing tube 2 (6), the lower end of the pressure dividing tube 2 (6) being through-connected to the rear surface of the balancing tube (7), the balancing tube (7) being fixedly mounted on the upper surface of a bottom plate (8), the interior of the balancing tube (7) being fixedly mounted with a sliding tube (9).

2. A hydropower station coordinated speed regulator with a pressure balance structure according to claim 1, characterized in that: A sliding rod is slidably mounted at the center of the sliding tube (9), and pressing plates (10) are fixedly mounted at both ends of the sliding rod.

3. A hydropower station coordinated speed governor with a pressure balance structure according to claim 1, characterized in that: The water wheel (4) is located inside the water pipe (1).

4. A hydropower station coordinated speed governor with a pressure balance structure according to claim 1, characterized in that: The bottom plate (8) is also connected to a pressure regulating structure, and the pressure regulating structure can trigger the pressure regulating valve (14) to open via the bellows (12).

5. A hydropower station coordinated speed governor with a pressure balance structure according to claim 4, characterized in that: The pressure regulating structure comprises a fixing plate (11), the fixing plate (11) being fixedly mounted on the upper surface of a bottom plate (8), a bellows (12) being fixedly connected to the side surface of the fixing plate (11), the bellows (12) being through-connected to the side surface of a balancing pipe (7), a sliding block (13) being fixedly connected to the other end of the bellows (12), the sliding block (13) being slidably mounted on the upper surface of the bottom plate (8), a pressure regulating valve (14) being fixedly mounted on the outer surface of the water pipe (1), and an infrared sensor (15) being fixedly mounted on the lower end of the pressure regulating valve (14).

6. A hydropower station coordinated speed governor with a pressure balance structure according to claim 5, characterized in that: Two pressure regulating valves (14) are symmetrically installed.

7. The coordinated speed governor of a hydropower station with a pressure balance structure according to claim 5, characterized in that: The sliding block (13) is configured as an L-shaped structure.

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