CN-224216230-U - Valve box oil leak monitoring devices

CN224216230UCN 224216230 UCN224216230 UCN 224216230UCN-224216230-U

Abstract

The utility model relates to the technical field of oil leakage monitoring, in particular to a valve box oil leakage monitoring device. The valve box oil leakage monitoring device comprises an optical emission unit, an optical element, an optical receiving unit, a signal processing unit and a comparison unit, wherein the optical emission unit is used for emitting light beams, the optical element is arranged in a region to be detected and used for receiving the light beams emitted by the optical emission unit and the refracted light beams, the optical receiving unit is used for receiving the light beams refracted by the optical element, and the signal processing unit is connected with the optical receiving unit and used for comparing the light intensity emitted by the optical emission unit with the light intensity received by the optical receiving unit. The valve box oil leakage monitoring device provided by the utility model not only avoids the condition that the existing sensor is damaged due to oil corrosion, but also can detect the leakage condition when a small amount of oil in the valve box leaks.

Inventors

LIU HAIPING
HOU QIANG
CHEN WEI
XU JUN
WANG JUN
LIU QINGLIN

Assignees

国能神东煤炭集团有限责任公司
中国神华能源股份有限公司神东煤炭分公司

Dates

Publication Date: 20260508
Application Date: 20250717

Claims (10)

1. The utility model provides a valve box oil leak monitoring devices which characterized in that includes: an optical emission unit for emitting a light beam; An optical element arranged in the region to be detected for receiving the light beam emitted by the optical emission unit and refracting the light beam; An optical receiving unit for receiving the light beam refracted by the optical element; and the signal processing unit is connected with the optical receiving unit and is used for comparing the intensity of the light rays emitted by the optical emitting unit with the intensity of the light rays received by the optical receiving unit.
2. The valve box leak monitoring device of claim 1, wherein the optical emission unit comprises a laser or LED light source.
3. The valve box leak monitoring device of claim 1, wherein the optical element comprises at least one of an optical prism, an optical mirror, or a grating.
4. A valve box oil leakage monitoring device according to claim 3, wherein the optical prism comprises a triple prism.
5. The valve box oil leakage monitoring device according to claim 4, wherein one plane of the triangular prism is used as an incident plane and a refraction plane of the light beam, and the light beam is transmitted to the optical receiving unit after being refracted twice in the triangular prism.
6. The valve box leak monitoring device of claim 1, wherein the optical receiving unit comprises a photoelectric sensor or a spectrum analyzer.
7. The valve box oil leakage monitoring device according to claim 1, further comprising an alarm unit connected to the signal processing unit, wherein the alarm unit is configured to trigger an alarm signal when the signal processing unit detects that the intensity of light is below a preset threshold.
8. The valve box oil leakage monitoring device according to claim 7, wherein the alarm unit is selected from an audible alarm unit, a light alarm unit or a wireless alarm unit.
9. The valve box oil leakage monitoring device according to any one of claims 1 to 8, further comprising a housing, wherein the optical transmitting unit, the optical receiving unit and the signal processing unit are all located in the housing, and the optical element is located outside the housing.
10. The valve box oil leakage monitoring device of claim 9, wherein the housing is an explosion-proof housing.

Description

Valve box oil leak monitoring devices Technical Field The utility model relates to the technical field of oil leakage monitoring, in particular to a valve box oil leakage monitoring device. Background The valve box is a key component of an industrial system, and the interior of the valve box depends on oil to realize functions of lubrication, sealing and the like, but oil leakage can pollute the environment, damage equipment and even cause fire. In order to solve the problem of oil leakage of the valve box, oil-based oil has corrosive chemical characteristics, and an oil leakage sensor based on corrosiveness is currently provided. The sensor has the working principle that when oil contacts the sensor, the sensor material is contracted or deformed under the corrosion action, and then the conductive material wrapped outside the induction line is extruded to cause short circuit, so as to trigger an alarm, thereby timely monitoring the oil leakage condition of the valve box and providing guarantee for the safe and stable operation of an industrial system. However, based on corrosive oil leakage sensors, on the one hand, the sensor itself may be destroyed during the detection process, affecting its service life. On the other hand, the detection speed is affected by the corrosiveness of the oil product, and may not be detected when oil leaks in a trace amount. Disclosure of utility model The present utility model has been made in view of the above-described problems. The utility model provides a valve box oil leakage monitoring device, which not only avoids the condition that the existing sensor is damaged due to oil corrosion, but also can detect the leakage condition when a small amount of oil in the valve box leaks. According to an aspect of the present utility model, there is provided a valve box oil leakage monitoring device comprising: an optical emission unit for emitting a light beam; An optical element arranged in the region to be detected for receiving the light beam emitted by the optical emission unit and refracting the light beam; An optical receiving unit for receiving the light beam refracted by the optical element; and the signal processing unit is connected with the optical receiving unit and is used for comparing the intensity of the light rays emitted by the optical emitting unit with the intensity of the light rays received by the optical receiving unit. Compared with the prior art, the valve box oil leakage monitoring device provided by the utility model comprises an optical transmitting unit, an optical receiving unit and an optical element arranged in a region to be detected. The optical transmitting unit may be used to transmit the light beam into the optical element in the area to be detected, so that the light beam is refracted in the optical element and then output to the optical receiving unit. In this process, if a small amount of leaked oil occurs in the valve housing, the leaked oil substances may adhere to the surface of the optical element disposed in the area to be detected. At this time, after the light beam emitted by the optical emission unit reaches the optical element, molecules of the oil substances absorb energy consistent with the characteristic frequency of the molecules, namely energy in the light beam, so that the intensity of the light beam refracted by the optical element is attenuated, and the intensity of the light beam entering the optical receiving unit is reduced. At this time, the signal processing unit can determine whether the area to be detected leaks oil or not by comparing the difference value between the intensity of the light beam received by the optical receiving unit and the intensity of the light beam emitted by the optical emitting unit. Even if the trace amount of oil leaks, the absorption of light energy can be induced as long as the oil molecules are attached to the optical element, so that the intensity difference which can be detected is formed, and the problem that the conventional sensor based on corrosiveness is difficult to detect when the trace amount of oil leaks is solved. Meanwhile, the whole detection process is based on the energy absorption and refraction principle of light, so that the optical emission unit, the optical element and the optical receiving unit cannot chemically react with oil substances or be physically damaged. The sensor avoids the condition that the existing sensor is damaged due to oil corrosion, greatly prolongs the service life of the device, and reduces the cost caused by frequent replacement of the sensor. On the basis, the detection speed of the valve box oil leakage monitoring device is not influenced by oil corrosiveness, as long as oil substances exist and absorb light energy with specific frequency, the change of light intensity can be immediately captured by the optical receiving unit, and the signal processing unit can rapidly complete intensity comparison and react. Drawings The above and other objects,