Oil replenishing alarm device for oil dilution station of fan

Abstract

The utility model provides a kind of oil replenishing alarm device for fan with thin oil station, including: shell, bottom is provided with the connecting structure for being fixed with thin oil station;Suspension in the top end of shell interior sensing drive module, sensing drive module includes S-shaped tension sensor, motor and by motor driven winding wheel;The utility model discloses through the connection of hanging rope and float ball, so that float ball can be not restricted freely floating on liquid surface.By real-time monitoring the tension of hanging rope and controlling motor instantaneously winding and unwinding hanging rope, make the position of float ball strictly by real liquid surface determine.Therefore, the position of the sign block rigidly connected with hanging rope can accurately reproduce the real liquid level in thin oil station without lag and distortion.Fundamentally avoids the problem of sliding jam caused by impurities and oil stains in oil.

Description

Technical Field

[0001] This utility model relates to the field of liquid level monitoring technology, specifically to an alarm device for replenishing oil in a thin oil station for a fan. Background Technology

[0002] In wind turbine equipment, the thin oil station is a common lubrication supply device, and its real-time monitoring and alarm function for oil level status is crucial to ensuring the stable operation of the system.

[0003] Currently, the commonly used oil level monitoring devices in thin oil stations mainly include two types: float-type and sensor-type. Among them, the float-type monitoring device uses the characteristic of the float changing with the liquid level to detect the oil level. However, in actual application, because the oil may contain impurities, the sliding rod connected to the float is prone to slippage and jamming due to the accumulation of scale or oil, leading to monitoring failure or false alarms, affecting the reliability and safety of the equipment.

[0004] To overcome the aforementioned defects in the existing technology, this utility model proposes a thin oil station replenishment alarm device for wind turbines, aiming to effectively solve the problem of insufficient reliability caused by structural jamming in float-type monitoring devices. Utility Model Content

[0005] To overcome the aforementioned technical problems, the purpose of this utility model is to provide an oil replenishment alarm device for a thin oil station used in wind turbines. This purpose can be achieved through the following technical solution: An oil replenishment alarm device for a thin oil station used in wind turbines, comprising: The outer casing has a connection structure at its bottom for fixing to the thin oil station; The sensing and driving module, which is suspended at the top of the housing, includes an S-shaped tension sensor, a motor, and a winding reel driven by the motor; a suspension rope, one end of which is wound around the winding reel and the other end of which extends out of the housing and is connected to a float; and a controller, which is electrically connected to the S-shaped tension sensor and the motor. The marker block is fixedly installed on the hoisting rope inside the housing and descends synchronously as the hoisting rope is released. The S-shaped tension sensor is used to detect the tension value of the hoisting rope in real time. The controller is used to receive the tension value signal and determine whether the tension value is greater than 0. When the tension value is greater than 0, the controller controls the motor to rotate to release the hoisting rope.

[0006] Beneficial effects: This invention connects a float to a suspended rope, allowing the float to float freely on the liquid surface without restraint. By monitoring the tension of the suspended rope in real time and controlling the motor to extend and retract the rope accordingly, the position of the float is strictly determined by the actual liquid level. Therefore, the position of the marker block rigidly connected to the suspended rope can accurately reproduce the actual liquid level height inside the thin oil station without lag or distortion. This fundamentally avoids the problem of sliding and jamming of the slide rod caused by impurities and oil deposits in the oil in existing liquid level detection mechanisms. Attached Figure Description

[0007] Figure 1 This is a schematic diagram of the structure of this utility model.

[0008] Figure 2 This is a schematic diagram of the controller connection structure of an embodiment of the thin oil station replenishment alarm device for wind turbines according to this utility model.

[0009] Figure 3 This is a schematic diagram of the observation tube structure of this utility model.

[0010] Figure 4 This is a three-dimensional structural diagram of the present invention. Detailed Implementation

[0011] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0012] Example 1 Please see Figures 1 to 4 This embodiment provides a thin oil station replenishment alarm device for a fan, which is fixedly installed at the top opening of the thin oil station 1 by bolts 11. It includes a cylindrical outer shell 3, the top of which is closed, and the bottom has an integrally formed annular connecting ring 12. The connecting ring 12 has multiple through holes, and is detachably fixed to the flange at the top of the thin oil station 1 by bolts 11 passing through these through holes. The outer shell 3 is preferably made of a transparent material to facilitate observation of the interior.

[0013] Inside the top of the housing 3, an S-shaped tension sensor 2 is fixedly mounted with screws at its first end (upper end). The range of the S-shaped tension sensor 2 can be selected according to the weight of the float 14 and the expected force, for example, 5 kg or 10 kg. The second end (lower end) of the S-shaped tension sensor 2 is fixedly connected to a motor 9 via a mounting plate. The motor 9 is preferably a servo motor. The output shaft of the motor 9 is fixedly mounted with a winding reel 4 via a key connection. The winding reel 4 is wound with a suspension rope 13. The other end of the suspension rope 13 extends vertically downward into the interior of the thin oil station 1 and is connected to a float 14. The float 14 can always float on the surface of the oil in the thin oil station 1 without any other external force. A conspicuous marker block 7 is fixedly connected to the section of the suspension rope 13 located inside the housing 3. The marker block 7 can be a colored plastic block or a metal block.

[0014] To guide and protect the movement of the suspension rope 13 and the marker block 7, and for ease of observation, a transparent observation tube 6 is fixedly installed on the inner wall of the outer casing 3 via a mounting block 5. The suspension rope 13 and the marker block 7 are movably disposed inside the observation tube 6 and can move freely up and down along its axis. On the inner wall of the observation tube 6, at the position corresponding to the minimum safe level of lubricating oil required for replenishment of the thin oil station 1, a micro switch 10 is fixedly installed, with its trigger arm extending into the tube.

[0015] A controller 8, which may be a PLC controller, is installed inside the inner wall of the housing 3 or in the external control box. The input port of the controller 8 is electrically connected to the signal output terminal of the S-shaped tension sensor 2 to receive real-time tension voltage signals. The output port of the controller 8 is electrically connected to the drive circuit of the motor 9 to control the start, stop, and direction of the motor. Simultaneously, the controller 8 is electrically connected to a micro switch 10 via its input port and to an external alarm 15, such as a buzzer and / or warning light, via an output port.

[0016] The working principle of this utility model is as follows: Initially, the float 14 floats freely on the surface of the lubricating oil in the thin oil station 1. At this time, the tension of the suspension rope 13 on the float 14 is 0, and the initial tension value detected by the S-shaped tension sensor 2 is F0.

[0017] As the liquid level in the thin oil station 1 slowly decreases, the float 14, under its own weight and buoyancy, tends to descend synchronously with the liquid level. This tendency translates into a downward pull on the suspension rope 13, causing the real-time pull value F detected by the S-shaped tension sensor 2 to increase. The controller 8 continuously compares the real-time pull value F with the initial pull value F0. When F > F0, the controller 8 determines that the current length of the suspension rope 13 is insufficient. Therefore, the controller 8 immediately sends a command to the motor 9, controlling the motor 9 to drive the winding wheel 4 to rotate in the rope release direction and release a certain length of the suspension rope 13. After the suspension rope 13 is released, the pulling force on the float 14 is released, and the real-time pull value F decreases and returns to the level of F0. At this time, the float 14 can descend unimpeded with the liquid level to a new equilibrium position, and the suspension rope 13 can be kept in a straight line.

[0018] During this process, the marker block 7, fixed to the suspension rope 13, also sinks. Therefore, the new position of the marker block 7 in the observation tube 6 precisely corresponds to the new liquid level height after the drop in the thin oil station 1. The staff can visually read the liquid level through the scale on the outside of the observation tube 6 (not shown in the figure).

[0019] When the liquid level continues to drop to the preset minimum replenishment level, the marker block 7 also drops to that position simultaneously, pressing the trigger arm of the micro switch 10. Once triggered, the micro switch 10 generates a switching signal and sends it to the controller 8. Upon receiving this signal, the controller 8 immediately activates the alarm 15 through its output port, emitting a continuous audible and visual alarm signal to alert the operator to perform a replenishment operation, thereby effectively preventing equipment accidents caused by insufficient oil.

[0020] This invention replaces the existing sliding rod connecting the float 14 with an automatically retractable suspension rope 13, and uses the marker block 7 on the suspension rope 13 to display the liquid level height. This can effectively avoid the problem of sliding rod jamming caused by impurities and oil stains in the existing liquid level detection mechanism.

[0021] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A thin oil station replenishment alarm device for wind turbines, characterized in that, include: The outer shell (3) has a connection structure at its bottom for fixing to the thin oil station (1); The sensing and driving module is suspended at the top of the inside of the housing (3). The sensing and driving module includes an S-shaped tension sensor (2), a motor (9), and a winding wheel (4) driven by the motor (9); a suspension rope (13), one end of which is wound around the winding wheel (4), and the other end extends out of the housing (3) and is connected to a float (14); and a controller (8), which is electrically connected to the S-shaped tension sensor (2) and the motor (9). The marker block (7) is fixedly installed on the hoisting rope (13) inside the outer shell (3) and descends synchronously with the release of the hoisting rope (13); among them, the S-shaped tension sensor (2) is used to detect the tension value of the hoisting rope (13) in real time, and the controller (8) is used to receive the tension value signal and determine whether the tension value is greater than 0. When the tension value is greater than 0, the controller (8) controls the motor (9) to rotate to release the hoisting rope (13).

2. The oil replenishment alarm device for a wind turbine thin oil station as described in claim 1, characterized in that, A transparent observation tube (6) is fixedly installed on the inner wall of the outer shell (3), and the hanging rope (13) and the marker block (7) are housed inside the observation tube (6).

3. The oil replenishment alarm device for a wind turbine thin oil station as described in claim 2, characterized in that, On the inner wall of the observation tube (6), a micro switch (10) is fixedly installed at the position corresponding to the lowest replenishment level. The micro switch (10) is electrically connected to the controller (8). When the liquid level drops to the lowest replenishment level, the marker block (7) descends with the hoisting rope (13) and triggers the micro switch (10). After receiving the trigger signal, the controller (8) controls an alarm (15) to sound an alarm.

4. The oil replenishment alarm device for a thin oil station for a wind turbine as described in claim 1, characterized in that, The connection structure is a connecting ring (12) integrally formed with the bottom of the outer shell (3), and the connecting ring (12) is fixedly connected to the top of the thin oil station (1) by bolts (11).

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