Derailing prevention device for feedback steel wire rope of water turbine governor

Abstract

The utility model discloses a hydraulic turbine governor feedback steel wire rope anti-derailing device which comprises an oil hydraulic cylinder, the oil hydraulic cylinder is fixedly installed through an oil cylinder base, a piston rod is arranged in the oil hydraulic cylinder and can move in a reciprocating mode, and a governor push-pull rod is fixedly connected with one end of the piston rod. The sleeve is arranged on the speed regulator push-pull rod in a sleeving mode and fixed through the fixing nut. One end of the feedback steel wire rope is connected with the hoop, the other end of the feedback steel wire rope is connected with the potentiometer, one end of the limiting rod is connected with the hoop through the limiting angle steel, the other end of the limiting rod is connected with the position sensor, and the locking oil cylinder is installed on the top of the oil cylinder base. By arranging the limiting rod and the hoop, double limiting is conducted on the feedback steel wire rope in the transverse direction and the vertical direction, the feedback steel wire rope is effectively prevented from derailing, stable transmission of feedback signals is guaranteed, the working reliability of a water turbine governor is improved, and it is guaranteed that a water turbine can operate safely and stably.

Description

Technical Field

[0001] This utility model relates to the technical field of turbine governors, and in particular to a turbine governor feedback wire rope anti-derailment device. Background Technology

[0002] In a hydroelectric turbine governor system, the feedback wire rope plays a crucial role, transmitting the governor's feedback signal to the control system to precisely regulate the turbine's operating status. However, in actual operation, due to the complex working environment of the turbine, including vibration and impact, the feedback wire rope is prone to derailment. Once derailed, the feedback signal becomes abnormal, affecting the normal operation of the governor and, in severe cases, threatening the safe and stable operation of the turbine. Currently, existing anti-derailment measures are not ideal and cannot effectively solve the problem of wire rope derailment under complex operating conditions, posing a threat to the safe operation of hydroelectric power stations. Utility Model Content

[0003] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a feedback wire rope anti-derailment device for a water turbine governor.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A device for preventing derailment of a feedback wire rope in a turbine governor includes a hydraulic cylinder, a piston rod, a governor push-pull rod, a sleeve, a feedback wire rope, a limit rod, a clamp, a position sensor, a locking cylinder, and a potentiometer. The hydraulic cylinder is fixedly installed via a cylinder seat. The piston rod is disposed inside the hydraulic cylinder and is reciprocating. One end of the governor push-pull rod is fixedly connected to the piston rod. The sleeve is fitted onto the governor push-pull rod and secured with a fixing nut. A clamp is provided on the sleeve. One end of the feedback wire rope is connected to the clamp, and the other end is connected to the potentiometer. One end of the limit rod is connected to the clamp via a limit angle steel, and the other end is connected to the position sensor. The locking cylinder is installed on top of the cylinder seat.

[0006] The clamp has fixing ears on both sides, and the clamp is fixed to the sleeve by fixing ears and bolts. The clamp is provided with a lead rod and a limiting angle steel. The feedback wire rope is connected to the lead rod and is fixed by tightening nuts. Both ends of the limiting rod are provided with threads. The end of the limiting rod passes through the through hole on the limiting angle steel and is fixed by limiting nuts. The limiting angle steel is fixed to the fixing ears by bolts.

[0007] The limiting rod is set parallel to the feed wire rope.

[0008] The potentiometer is mounted on the top of the hydraulic cylinder via a support frame. The feedback steel wire rope passes through the support frame and is mounted on the potentiometer. The position sensor is fixed to the cylinder seat via a connecting frame. A relay is provided on the position sensor. The limit rod is connected to the relay via a fixed bracket. The end of the limit rod passes through the fixed bracket and is fixed to the fixed bracket with a nut.

[0009] The hydraulic cylinder is fixedly installed on the foundation structure of the turbine governor by a cylinder seat. The hydraulic cylinder has a piston rod inside, which can reciprocate within the hydraulic cylinder. Its movement is controlled by the hydraulic pressure of the governor system. The extension and retraction of the piston rod pushes the governor push rod, thereby realizing the adjustment of the turbine guide vane opening and other parameters.

[0010] Feedback wire ropes are used to transmit position information of the governor push-pull rod, so as to realize feedback control of the turbine's operating status.

[0011] The limit rod is set parallel to the feedback wire rope to limit the horizontal movement of the feedback wire rope and prevent it from deviating too much in the horizontal direction, which would cause the feedback wire rope to break. The length of the limit rod is designed according to the range of motion of the feedback wire rope.

[0012] The position sensor is used to monitor and provide feedback on the position information of the wire rope in real time, and transmits this information to the speed controller's control system so that the control system can adjust the speed controller's actions in a timely manner based on the feedback signal.

[0013] The locking cylinder is installed on the hydraulic cylinder of the turbine governor. Its function is to lock the piston rod in the current position by the action of the locking cylinder when the turbine needs to be stopped in an emergency or when an abnormal situation occurs, so as to prevent it from moving further and ensure the safety of the turbine.

[0014] The potentiometer is connected to the feedback wire rope, converting the displacement signal of the feedback wire rope into an electrical signal, providing accurate feedback data to the speed controller's control system for more precise control.

[0015] The beneficial effects of this utility model are as follows: By setting limit rods and clamps, the feedback wire rope is doubly limited in both the horizontal and vertical directions, effectively preventing it from derailing, ensuring stable transmission of the feedback signal, improving the working reliability of the turbine governor, and ensuring the safe and stable operation of the turbine. At the same time, the inclusion of position sensors, locking cylinders, and potentiometers further enhances the governor's control functions, improving the system's automation level and control accuracy. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is the front view of the present invention;

[0018] In the diagram: 1. Hydraulic cylinder; 11. Cylinder seat; 2. Piston rod; 3. Speed ​​controller push-pull rod; 4. Sleeve; 41. Fixing nut; 5. Feedback wire rope; 6. Limit rod; 61. Limiting nut; 7. Clamp; 71. Lead screw; 72. Compression nut; 73. Fixing lug; 74. Limiting angle steel; 75. Bolt; 8. Position sensor; 81. Relay device; 82. Connecting frame; 83. Fixing bracket; 9. Locking cylinder; 10. Potentiometer; 101. Support frame. Detailed Implementation

[0019] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0020] Example 1

[0021] like Figure 1-2 As shown, this utility model provides a device for preventing the feedback wire rope of a turbine governor from derailing. Its structure includes a hydraulic cylinder 1, a piston rod 2, a governor push-pull rod 3, a sleeve 4, a feedback wire rope 5, a limit rod 6, a clamp 7, a position sensor 8, a locking cylinder 9, and a potentiometer 10. The hydraulic cylinder 1 is fixedly installed via a cylinder seat 11. The piston rod 2 is located inside the hydraulic cylinder 1 and can reciprocate. The governor push-pull rod 3 is fixedly connected to one end of the piston rod 2. The sleeve 4 is fitted onto the governor push-pull rod 3 and fixed by a fixing nut 41. A clamp 7 is provided on the sleeve 4. One end of the feedback wire rope 5 is connected to the clamp 7, and the other end is connected to the potentiometer 10. One end of the limit rod 6 is connected to the clamp 7 via a limit angle steel 74, and the other end is connected to the position sensor 8. The locking cylinder 9 is installed on the top of the cylinder seat 11.

[0022] The clamp 7 has fixing ears 73 on both sides. The clamp 7 is fixed to the sleeve 4 by fixing ears 73 and bolts 75. The clamp 7 is equipped with a screw rod 71 and a limiting angle steel 74. The feedback wire rope 5 is connected to the screw rod 71 and is fixed by pressing it up and down by clamping nut 72. Both ends of the limiting rod 6 are threaded. The end of the limiting rod 6 passes through the through hole on the limiting angle steel 74 and is fixed by limiting nut 61. The limiting angle steel 74 is fixed to the fixing ears 73 by bolts 75.

[0023] The limit rod 6 is set parallel to the feed wire rope 5.

[0024] Potentiometer 10 is mounted on top of hydraulic cylinder 1 via support frame 101. Feedback wire rope 5 passes through support frame 101 and is mounted on potentiometer. Position sensor 8 is fixed to cylinder seat 11 via connecting frame 82. Position sensor 8 is equipped with relay 81. Limiting rod 6 is connected to relay 81 via fixed bracket 83. End of limiting rod 6 passes through fixed bracket 83 and is fixed to fixed bracket 83 with nut.

[0025] Working Principle: When the turbine governor is working, the oil pressure change in the hydraulic cylinder 1 pushes the piston rod 2 to extend and retract. The piston rod 2 drives the governor push-pull rod 3 to move, and the movement of the governor push-pull rod 3 causes the feedback wire rope 5 to displace. During the movement of the feedback wire rope 5, the limit rod 6 restricts its lateral displacement, and the clamp 7 restricts its vertical displacement, ensuring that the feedback wire rope 5 always runs on the normal track. The position sensor 8 monitors the position information of the feedback wire rope 5 in real time and transmits it to the control system. The potentiometer 10 converts the displacement signal into an electrical signal, providing accurate data for the control system to adjust the governor's action according to the feedback signal. When an emergency occurs in the turbine, the locking cylinder 9 activates, locking the piston rod 2 in the current position to ensure the safety of the turbine.

Claims

1. A device for preventing derailment of a feedback wire rope in a turbine governor, characterized in that: The device includes a hydraulic cylinder (1), a piston rod (2), a speed regulator push-pull rod (3), a sleeve (4), a feedback wire rope (5), a limit rod (6), a clamp (7), a position sensor (8), a locking cylinder (9), and a potentiometer (10). The hydraulic cylinder (1) is fixedly installed by a cylinder seat (11). The piston rod (2) is located inside the hydraulic cylinder (1) and can reciprocate. The speed regulator push-pull rod (3) is fixedly connected to one end of the piston rod (2). The sleeve (4) is sleeved on the speed regulator push-pull rod (3) and fixed by a fixing nut (41). A clamp (7) is provided on the sleeve (4). One end of the feedback wire rope (5) is connected to the clamp (7), and the other end is connected to the potentiometer (10). One end of the limit rod (6) is connected to the clamp (7) by a limit angle steel (74), and the other end is connected to the position sensor (8). The locking cylinder (9) is installed on the top of the cylinder seat (11).

2. The anti-derailing device for feedback wire rope of a water turbine governor according to claim 1, characterized in that: The clamp (7) is provided with fixing ears (73) on both sides. The clamp (7) is fixed to the sleeve (4) by fixing ears (73) and bolts (75). The clamp (7) is provided with a screw rod (71) and a limiting angle steel (74). The feedback wire rope (5) is connected to the screw rod (71) and is fixed by pressing the clamping nut (72) up and down. The limiting rod (6) is provided with threads at both ends. The end of the limiting rod (6) passes through the through hole on the limiting angle steel (74) and is fixed by limiting nut (61). The limiting angle steel (74) is fixed to the fixing ears (73) by bolts (75).

3. The anti-derailing device for feedback wire rope of a water turbine governor according to claim 1, characterized in that: The limiting rod (6) is set parallel to the feed wire rope (5).

4. The anti-derailing device for feedback wire rope of a water turbine governor according to claim 1, characterized in that: The potentiometer (10) is mounted on the top of the hydraulic cylinder (1) via a support frame (101). The feedback wire rope (5) passes through the support frame (101) and is mounted on the potentiometer. The position sensor (8) is fixed on the cylinder seat (11) via a connecting frame (82). A relay (81) is provided on the position sensor (8). The limit rod (6) is connected to the relay (81) via a fixed bracket (83). The end of the limit rod (6) passes through the fixed bracket (83) and is fixed to the fixed bracket (83) with a nut.

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