一种液位保护装置以及风机

Abstract

本实用新型提供了一种液位保护装置以及风机。本实用新型通过增加第二传感子单元和第二控制执行子单元，提供了更加灵活和多层次的液位监控与保护功能。第二传感子单元被配置在目标箱体内的第二位置，用于检测液位是否达到较高的位置。当检测到液位达到该位置时，第二传感子单元输出第二触发信号，激活控制执行模块，并驱动报警装置发出警报，提示操作人员进行补油或其他必要的维护操作。这种双重监控机制使得液位保护装置在油位过低时可以触发紧急停机保护，防止齿轮干摩擦和设备损坏，而在油位接近预设较高位置时，液位保护装置能够及时发出告警信号并启动补油过程，避免油位过低带来的危害并确保设备运行的稳定性和安全性。

Claims

1. A liquid level protection device, characterized in that include: A sensing module is configured inside the target container and includes at least a first sensing subunit. The first sensing subunit is configured at a first position inside the target container to detect whether target liquid is present at the first position and, if the presence of target liquid is detected, outputs a first trigger signal through its signal output terminal. A control execution module, electrically connected to the sensing module, includes at least a first control execution subunit. The signal input terminal of the first control execution subunit is electrically connected to the signal output terminal of the first sensing subunit. The control execution subunit is configured in the main power supply circuit of the target power device and is configured to disconnect the main power supply circuit of the target power device upon receiving a first trigger signal. The operating state of the target power device is adapted to the liquid level in the target tank.

2. The liquid level protection device according to claim 1, characterized in that The sensing module further includes: A second sensing subunit is configured at a second position inside the target container to detect the presence of target liquid at the second position, and to output a second trigger signal through its signal output terminal when the presence of target liquid is detected; wherein the second position is higher than the first position. The control execution module further includes: The second control execution subunit has its signal input terminal electrically connected to the signal output terminal of the second sensing subunit, and the signal output terminal of the second control execution subunit is at least electrically connected to the alarm device.

3. The liquid level protection device of claim 2, wherein, The liquid level protection device also includes: The liquid replenishment module stores the target liquid internally, and its liquid outlet is connected to the target container for replenishing the target liquid into the target container; wherein, a control valve is configured in the liquid outlet, and the signal input terminal of the control valve is electrically connected to the signal output terminal of the second control execution subunit.

4. The liquid level protection device of claim 3, wherein, The replenishment module is an auxiliary oil bottle with a vent cap on top and a liquid outlet at the bottom. The liquid outlet is connected to the target container via an oil delivery pipe, and an oil dipstick is provided on the side of the oil delivery pipe away from the target container.

5. The liquid level protection device of claim 1, wherein, The first control execution subunit includes: The first relay has its coil connected in series with the signal output terminal of the first sensing subunit; The main AC contactor has its main contacts connected in series in the main power supply circuit of the target power device to control the connection and disconnection of the main power supply circuit; wherein, the contacts of the first relay are normally closed contacts, which are connected in series in the control circuit of the coil of the main AC contactor; when the first sensing subunit outputs the first trigger signal, the coil of the first relay is energized, driving its normally closed contacts to open, causing the coil of the main AC contactor to be de-energized, thereby disconnecting the main power supply circuit of the target power device.

6. The liquid level protection device of claim 3, wherein The second control execution subunit includes: The second relay has its coil connected in series with the signal output terminal of the second sensing subunit, and has a first normally open contact and a second normally open contact; wherein, the first normally open contact is electrically connected to the alarm device, and the second normally open contact is electrically connected to the control valve; wherein, the control valve is a normally closed solenoid valve.

7. A liquid level protection device according to claim 5 or 6, characterised in that The control execution module further includes: The power conversion unit has its power transmission end connected to the main power supply circuit, and its power supply end is electrically connected to the first relay, the first sensing subunit, or the second relay, the second sensing subunit, and the control valve, respectively.

8. The liquid level protection device of claim 7, wherein, The power supply terminal of the power conversion unit is equipped with a fuse protection device.

9. The liquid level protection device according to any one of claims 1-8, characterized in that, The sensing module is a capacitive contact oil level sensor.

10. A fan, characterized by The fan includes a motor for driving a fan gear, the fan gear being disposed within the target housing, the target housing being a gearbox; the fan further includes: a liquid level protection device as described in any one of claims 1-9.

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