Oil leakage monitoring device for water surface sampling

Abstract

A water surface sampling oil leakage monitoring device provided by the present invention comprises a floating monitoring body and an accompanying cable connected with the floating monitoring body, the floating monitoring body comprises a buoy cavity, a shading cavity, a light processor and a water pump, the shading cavity is located below the buoy cavity, the light processor is arranged in the shading cavity, and the accompanying cable is connected with the water pump. A plurality of water inlets are formed in the circumferential side wall of the shading cavity at intervals, the positions of the water inlets are higher than the light processor, the water pump is arranged below the shading cavity, the water inlet end of the water pump is connected with a water outlet in the bottom of the shading cavity, and the drainage end of the water pump is used for discharging to-be-detected liquid entering the shading cavity from the water inlets. The invention can reduce the attachment of sediments on the surface of the optical processor and reduce the interference of the sediments on petroleum detection.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of oil monitoring, in particular to a water-surface-sampling leaked oil monitoring device. BACKGROUND

[0002] In the process of oil monitoring, the water in the monitoring hole has almost no flowability, and the leaked oil components appear to be layered in the water. In the prior art, the oil fluorescence sensor is generally fixed below the water surface, which makes it difficult to contact the oil components. At the same time, the water surface line in the monitoring hole is affected by the underground water level and will fluctuate to some extent, and the oil components enriched on the water surface will also change in height. These factors make it difficult for the oil fluorescence sensor with a fixed position to obtain true measurement results.

[0003] In addition, in the water body lacking flowability in the field, biological and mineral deposits are easily produced with the increase of time. The deposits gathered on the optical window of the oil fluorescence sensor will greatly affect the measurement effect. At present, some sensors are equipped with electric cleaning brushes to wipe the optical window of the oil fluorescence sensor to alleviate the aggregation or adhesion of impurities. Since the cleaning brush needs to exert a large pressure and torque on the optical window of the oil fluorescence sensor, the driving shaft of the cleaning brush needs to pass through the sensor shell, which is difficult to achieve water and electricity isolation, and is very unfavorable to the improvement of the sealing performance and water pressure resistance of the sensor. Secondly, the monitoring position of the deep leaked oil in the monitoring hole is usually more than 100m underwater, and the sensor with the electric cleaning brush is difficult to meet the water pressure resistance requirement.

[0004] In summary, there is an urgent need for a water-surface-sampling leaked oil monitoring device to solve the problems existing in the prior art. SUMMARY

[0005] The present application aims to provide a water-surface-sampling leaked oil monitoring device, which aims to solve the problem that the optical window of the existing oil fluorescence sensor is easily affected by the deposits, resulting in the inability to obtain true measurement results. The specific technical solution is as follows:

[0006] A water-surface-sampling leaked oil monitoring device, comprising a floating monitoring body and a trailing cable connected to the floating monitoring body, the floating monitoring body comprising a float chamber, a light shielding chamber, a light processor and a water pump, the light shielding chamber being located below the float chamber, the light processor being arranged in the light shielding chamber, a plurality of water inlets being arranged on the circumferential side wall of the light shielding chamber at intervals and the position of the water inlet being higher than that of the light processor, the water pump being arranged below the light shielding chamber and its water inlet end being connected to the water outlet at the bottom of the light shielding chamber, and the water outlet end of the water pump being used to discharge the measured liquid entering the light shielding chamber through the water inlet.

[0007] Preferably, the floating monitoring body further comprises a water pump mounting cavity below the light shielding cavity, and the water pump is arranged in the water pump mounting cavity, and a water outlet of the water pump is connected with a water outlet opening in a wall of the water pump mounting cavity.

[0008] Preferably, an upper end of the trailing cable is connected with a positioning clamp at an opening of the monitoring hole, and a lower end of the trailing cable is connected with an inside of the floating monitoring body from a center position of a bottom of the floating monitoring body.

[0009] Preferably, when the floating monitoring body floats in the liquid to be measured, the water pump mounting cavity, the light shielding cavity, a part of the buoyancy tube cavity and a part of the trailing cable are all below a water line.

[0010] Preferably, an inside of the light shielding cavity is divided into a water inlet cavity and a detection cavity by a water passing partition, a middle part of the water passing partition is provided with a water passing hole for realizing mutual communication between the water inlet cavity and the detection cavity, a plurality of water inlet openings are arranged at intervals in a circumferential side wall of the water inlet cavity, the light processor is arranged in the detection cavity, and the water pump is arranged below the detection cavity and has a water inlet end connected with a water outlet opening in a bottom of the detection cavity.

[0011] Preferably, a hook is arranged at a top of the floating monitoring body.

[0012] Preferably, a replaceable float or a counterweight is arranged at a bottom of the floating monitoring body.

[0013] Preferably, the light processor comprises a light detector, LED light sources, a quartz glass sheet, a light shielding strip and a filter, the plurality of LED light sources are arranged at intervals along a circumference of the light detector, the quartz glass sheet is arranged below the light detector and the LED light sources, the filter is embedded at a position of the quartz glass sheet below the light detector, and the light shielding strip is arranged between the filter and the quartz glass sheet.

[0014] Preferably, the light processor further comprises an AD converter, a microprocessor, a controlled constant current source and a bus driver, the AD converter is arranged between the light detector and the microprocessor and is used for converting a light intensity signal of the light detector into a digital signal and transmitting the digital signal to the microprocessor, the controlled constant current source is arranged between the microprocessor and the LED light sources and is used for driving the LED light sources to generate excitation light according to an instruction of the microprocessor, and the bus driver is connected with the microprocessor to realize communication with an upper computer.

[0015] Preferably, a relative position between the light detector and the LED light sources satisfies that excitation light emitted by the LED light sources will not enter the light detector after being reflected by the quartz glass sheet.

[0016] By applying the technical scheme of the present application, the following beneficial effects are achieved:

[0017] In the oil leakage monitoring device of the present invention, the light-shielding cavity is divided into a water inlet cavity and a detection cavity by a water-passing baffle, wherein a plurality of water inlets are arranged at intervals on the circumferential side walls of the water inlet cavity, and the optical processor is arranged in the detection cavity. The suction action of the water pump causes the liquid to be tested to flow into the water inlet cavity from the plurality of water inlets. Since the water-passing baffle is provided with only one water-passing hole in the middle, the flow rate of the liquid to be tested entering the detection cavity is increased to form a forced convection effect; the optical processor is immersed in the detection cavity, and the higher flow rate of the liquid to be tested can reduce the adhesion of sediments on the surface of the optical processor, thereby reducing the interference of sediments on oil detection and reducing the frequency of cleaning the optical processor.

[0018] In the oil leakage monitoring device of the present invention, the lower end of the accompanying cable is connected to the interior of the floating monitoring body from the bottom center of the floating monitoring body. The direction of the gravity exerted by the accompanying cable on the floating monitoring body remains coincident with the axis of the floating monitoring body. The water pump and optical processor are both arranged on the lower side of the floating monitoring body to lower the overall center of gravity. Multiple measures enable the floating monitoring body of the present invention to float stably on the surface of the liquid to be tested, preventing the floating monitoring body from tilting on the water surface, and ensuring that the liquid to be tested can smoothly enter the water inlet chamber. At the same time, arranging both the water pump and optical processor on the lower side of the floating monitoring body can effectively form a forced convection effect, has the advantages of compact structure and small size, and reduces the power requirements of the water pump.

[0019] The oil leakage monitoring device of the present invention has the advantage of high sensitivity for oil detection. In order to solve the problem that the single LED sensor in the prior art has low sensitivity for oil detection, the present invention uses LEDs in the UV-B excitation light band that have a strong reaction to oil, and increases the intensity of the excitation light by increasing the number of LED lamps, thereby compensating for the problem of insufficient luminous intensity of the UV-B band LED. The excitation light not only meets the luminous intensity requirements, but also has strong fluorescence emission for oil, thereby improving the sensitivity for oil detection.

[0020] The oil leakage monitoring device of the present invention offers a higher cost-performance advantage. Conventional sensors require UV-B or even shorter wavelengths to achieve high sensitivity to oil, and typically use xenon lamps as light sources. This requirement is significantly constrained by factors such as product size, structural complexity, and cost. The present invention utilizes multiple LED light sources for excitation light output. The LEDs are smaller, resulting in a smaller product size and simpler structure. This makes the device less expensive than existing sensors of the same sensitivity and offers a higher cost-performance ratio.

[0021] The oil leakage monitoring device of the present invention has higher measurement accuracy. A light-isolating strip is arranged between the quartz glass plate and the filter, effectively preventing reflection, transmission, and scattering of incident light in the quartz glass plate from interfering with the light detector. The quartz glass plate itself has good light transmittance and low light loss, which can effectively reduce the loss of excitation light in the process of reaching the oil surface, ensuring that the excitation light intensity can generate emitted light of sufficient intensity. The relative position of the light detector and the LED light source ensures that the excitation light emitted by the LED light source will not enter the light detector after being reflected by the quartz glass plate, preventing the reflected light from interfering with the measurement results. The present invention, through multiple measures, can better ensure the effectiveness of the process in which the excitation light irradiates the detection object to generate emitted fluorescence and is detected by the light detector, thereby achieving higher measurement accuracy.

[0022] In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0024] Figure 1 Schematic diagram of the working state of the oil leakage monitoring device of the present invention;

[0025] Figure 2 yes Figure 1 Cross-sectional view of the mid-floating monitoring body;

[0026] Figure 3 yes Figure 1 Control system diagram of Zhongguang processor;

[0027] Figure 4 yes Figure 1 Schematic diagram of the light propagation path of the Zhongguang processor;

[0028] Figure 5 yes Figure 1 Schematic diagram of the structure of the Zhongguang processor;

[0029] Among them, 1. Monitoring hole, 2. Hook, 3. Float cavity, 4. Light-shielding cavity, 4.1. Water inlet cavity, 4.2. Detection cavity, 4.3. Water-passing baffle, 4.4. Water inlet, 4.5. Water-passing hole, 4.6. Water outlet, 5. Optical processor, 5.1. Optical detector, 5.2. AD converter, 5.3. Microprocessor, 5.4. Controlled constant current source, 5.5. LED light source, 5.6. Bus driver, 5.7. Quartz glass sheet, 5.8. Light-isolating strip, 5.9. Filter, 6. Water pump, 6.1. Water inlet end, 6.2. Drain end, 7. Water pump installation cavity, 7.1. Drain outlet, 8. Traveling cable, 9. First baffle, 10. Second baffle, 11. Detection object. DETAILED DESCRIPTION

[0030] To facilitate understanding of the present invention, the present invention will be described more fully below, along with preferred embodiments thereof. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the disclosure of the present invention.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in this specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0032] Example:

[0033] like Figure 1-Figure 5 As shown, this embodiment provides a water surface sampling oil leakage monitoring device, including a floating monitoring body and an accompanying cable 8 connected to the floating monitoring body, the floating monitoring body including a float cavity 3, a light shielding cavity 4, a light processor 5 and a water pump 6, the light shielding cavity 4 is located below the float cavity 3, the light processor 5 is arranged in the light shielding cavity 4, a plurality of water inlets 4.4 are spaced apart on the circumferential side wall of the light shielding cavity 4, and the position of the water inlet 4.4 is higher than the light processor 5, the water pump 6 is arranged below the light shielding cavity 4 and its water inlet end 6.2 is connected to the water outlet 4.6 at the bottom of the light shielding cavity 4, and the discharge end 6.2 of the water pump 6 is used to discharge the liquid to be tested that enters the light shielding cavity 4 through the water inlet 4.4.

[0034] Specifically, the accompanying cable 8 is used to power the water pump 6 and transmit data information from the optical processor 5. During monitoring, the light-shielding cavity needs to be located below the water surface. The water pump 6 is used to draw the liquid to be measured into the light-shielding cavity through the water inlet 4.4. The position of the water inlet 4.4 is higher than that of the optical processor 5 to ensure that the optical processor can be immersed in the liquid to be measured, thereby achieving the purpose of obtaining accurate measurement data.

[0035] like Figure 1 and Figure 2 As shown, the floating monitoring body in this embodiment further includes a water pump installation cavity 7 located below the light-shielding cavity 4. The water pump 6 is disposed in the water pump installation cavity 7, with a discharge end 6.2 of the water pump 6 connected to a drain port 7.1 on the wall of the water pump installation cavity 7 (the wall herein refers to the housing constituting the water pump installation cavity). Preferably, in this embodiment, a first partition 9 and a second partition 10 are provided in the floating monitoring body, thereby separating the interior of the floating monitoring body into the buoy cavity 3, the light-shielding cavity 4, and the water pump installation cavity 7.

[0036] Preferably, the upper end of the accompanying cable 8 is connected to the positioning fixture at the opening of the monitoring hole 1. The positioning fixture can bear most of the weight of the accompanying cable, reducing the impact of the cable weight on the floating state of the floating monitoring body. The lower end of the accompanying cable 8 is connected to the interior of the floating monitoring body from the bottom center of the floating monitoring body. The lower end of the accompanying cable is divided into a U-shaped structure and is located below the water surface line. It is connected to the interior of the floating monitoring body from the bottom center of the floating monitoring body. This arrangement can ensure that the gravity of the lower cable acting on the floating monitoring body is basically consistent with the axis of the floating monitoring body, so that the floating monitoring body can float in a vertical state in the liquid to be measured. At the same time, the cable of the U-shaped structure itself will also be affected by buoyancy, so this part of the cable will not generate excessive gravity on the floating monitoring body.

[0037] like Figure 2 As shown, the interior of the light-shielding chamber 4 is divided into a water inlet chamber 4.1 and a detection chamber 4.2 by a water baffle 4.3. A water hole 4.5 is provided in the middle of the water baffle 4.3 to connect the water inlet chamber 4.1 and the detection chamber 4.2. A plurality of water inlets 4.4 are spaced apart on the circumferential sidewalls of the water inlet chamber 4.1, and the plurality of water inlets are evenly distributed along the circumference. The optical processor 5 is disposed in the detection chamber 4.2, and the water pump 6 is disposed below the detection chamber 4.2 (i.e., the water pump installation chamber is disposed below the detection chamber), and its water inlet end 6.2 is connected to the water outlet 4.6 at the bottom of the detection chamber 4.2. In this embodiment, the structural arrangement of the water inlet chamber 4.1, the water baffle 4.3, and the detection chamber 4.2 creates forced convection of the liquid to be tested. The flow rate of the liquid to be tested entering the detection chamber 4.2 is high, which reduces the adhesion of sediments on the surface of the optical processor and reduces the interference of sediments with oil detection.

[0038] like Figure 1 As shown, a hook 2 is provided on the top of the floating monitoring body, and the hook 2 can be used to drop the floating monitoring body onto the water surface of the liquid to be tested. For example, a thin wire is used to connect the hook 2, and the thin wire is slowly released to drop the floating monitoring body and the accompanying cable 8 onto the surface of the liquid to be tested.

[0039] Preferably, when the floating monitoring body floats in the liquid to be tested, the water pump installation cavity 7, the light shielding cavity 4, part of the float cavity 3 and part of the accompanying cable 8 are all located below the water surface line. Furthermore, a replaceable float or counterweight is provided at the bottom of the floating monitoring body, and the buoyancy of the floating monitoring body in the liquid to be tested and the volume of the floating monitoring body can be adjusted by the float or counterweight, so as to finally achieve the floating state required by the floating monitoring body during monitoring; when the floating monitoring body requires a larger cross-section (volume) to meet the required floating state, a float can be added to the bottom of the floating monitoring body to reduce the cross-section (volume) of the floating monitoring body to ensure that the floating monitoring body can be smoothly placed in the monitoring hole 1; when the buoyancy of the floating monitoring body itself is too large, resulting in the float cavity being unable to be partially located below the water surface line, a counterweight can be added to the bottom of the floating monitoring body to meet the monitoring needs.

[0040] Furthermore, in this embodiment, when the floating monitoring body is controlled to float in the liquid to be tested, the water surface line is located at 1 / 2 of the float cavity height H (that is, the water surface line is located in the middle position of the float cavity height). In this embodiment, the float cavity height H is taken as 1.1 times the maximum water suction height h above it by the water pump in the monitoring hole.

[0041] like Figure 3-Figure 5 As shown, the light processor 5 includes a light detector 5.1, an LED light source 5.5, a quartz glass plate 5.7, a light-isolating strip 5.8, and a filter 5.9. The multiple LED light sources 5.5 are evenly distributed along the circumference of the light detector 5.1. The quartz glass plate 5.7 is arranged below the light detector 5.1 and the LED light source 5.5. The quartz glass plate 5.7 is embedded with a filter 5.9 at a position below the light detector 5.1, and a light-isolating strip 5.8 is provided between the filter 5.9 and the quartz glass plate 5.7.

[0042] Furthermore, the relative position of the light detector 5.1 and the LED light source 5.5 must satisfy the following requirement: the excitation light emitted by the LED light source 5.5 will not enter the light detector 5.1 after being reflected by the quartz glass plate 5.7. Preferably, the axis direction of the light detector forms an angle of 40° with the direction of emission of the excitation light from the LED light source.

[0043] In this embodiment, four LED light sources are provided. These four LED light sources emit UV-B band excitation light. Part of the excitation light is reflected from the surface of the quartz glass plate 5.7, but this reflected light does not enter the light detector 5.1. Some of the excitation light undergoes a series of scattered, reflected, and transmitted phenomena within the quartz glass plate 5.7. Due to the influence of the light-isolating strips 5.8, this scattered, reflected, and transmitted light also cannot enter the light detector 5.1. The remaining excitation light passes through the quartz glass plate 5.7 and enters the light collection range (i.e., the detection area). After the excitation light impinges on the detection object 11 (i.e., the liquid to be detected) within the light collection range, the surface of the detection object 11 emits light in all directions. The light that enters the filter 5.9 is filtered, and only the light emitted from the petroleum product 5.9 is allowed to pass through the filter 5.9 and enter the light detector 5.1.

[0044] The optical processor 5 also includes an AD converter 5.2, a microprocessor 5.3, a controlled constant current source 5.4 and a bus driver 5.6; the AD converter 5.2 is arranged between the light detector 5.1 and the microprocessor 5.3, and is used to convert the light intensity signal of the light detector 5.1 into a digital signal and transmit it to the microprocessor 5.3; the controlled constant current source 5.4 is arranged between the microprocessor 5.3 and the LED light source 5.5, and is used to drive the LED light source 5.5 to generate excitation light according to the instructions of the microprocessor 5.3; the bus driver 5.6 is connected to the microprocessor 5.3 and communicates with an external host computer through an accompanying cable.

[0045] The principle of oil monitoring by the floating monitoring body of this embodiment is as follows:

[0046] The floating monitoring body is powered on for preheating preparation, and the water pump 6 is operated to suck the liquid to be tested from the water inlet 4.4 into the water inlet chamber 4.1 and the detection chamber 4.2 in sequence and then discharged from the drain port 7.1;

[0047] When LED light source 5.5 is turned off, light detector 5.1 measures the background light intensity of the liquid to be tested. A / D converter 5.2 converts this background light intensity into a corresponding digital signal, which is stored in microprocessor 5.3. When LED light source 5.5 is turned on, excitation light passes through quartz glass plate 5.7 and strikes the object to be tested (i.e., the liquid to be tested), generating emission light that propagates to filter 5.9. Filter 5.9 filters out light outside the emission light spectrum to be measured, while the remaining emission light in the measurement spectrum passes through filter 5.9 to the light detector. The light detector measures the emission light intensity at this time, which is converted into a corresponding digital signal by A / D converter 5.2. This signal is stored in the microprocessor and subtracted from the background light digital signal. If the difference between this digital signal and the digital signal when no excitation light is emitted is not zero, the detection result indicates the presence of oil. If the difference between this digital signal and the digital signal when no excitation light is emitted is zero, the detection result indicates the absence of oil.

[0048] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A water surface sampling oil leakage monitoring device, characterized in that: The invention comprises a floating monitoring body and an accompanying cable (8) connected to the floating monitoring body, wherein the floating monitoring body comprises a float chamber (3), a light shielding chamber (4), a light processor (5) and a water pump (6); the light shielding chamber (4) is located below the float chamber (3); the light processor (5) is arranged in the light shielding chamber (4); a plurality of water inlets (4.4) are arranged at intervals on the circumferential side wall of the light shielding chamber (4); and the positions of the water inlets (4.4) are higher than the light processor (5); the water pump (6) is arranged below the light shielding chamber (4) and its water inlet end (6.2) is connected to the water outlet (4.6) at the bottom of the light shielding chamber (4); and the water discharge end (6.2) of the water pump (6) is used to discharge the liquid to be measured that enters the light shielding chamber (4) through the water inlet (4.4).

2. The oil leakage monitoring device for water surface sampling according to claim 1 is characterized in that: The floating monitoring body further comprises a water pump installation cavity (7) located below the light shielding cavity (4); the water pump (6) is arranged in the water pump installation cavity (7); and the drainage end (6.2) of the water pump (6) is connected to a drainage port (7.1) on the wall of the water pump installation cavity (7).

3. The oil leakage monitoring device for water surface sampling according to claim 2, characterized in that: The upper end of the accompanying cable (8) is connected to a positioning fixture at the opening of the monitoring hole (1), and the lower end thereof is connected to the interior of the floating monitoring body from the bottom center position of the floating monitoring body.

4. The device for monitoring oil leakage by sampling water surface according to claim 3, characterized in that: When the floating monitoring body floats in the liquid to be measured, the water pump installation cavity (7), the light shielding cavity (4), part of the float cavity (3) and part of the accompanying cable (8) are all located below the water surface line.

5. The oil leakage monitoring device for water surface sampling according to claim 1, characterized in that: The interior of the light-shielding cavity (4) is divided into a water inlet cavity (4.1) and a detection cavity (4.2) by a water-passing baffle (4.3); a water-passing hole (4.5) is provided in the middle of the water-passing baffle (4.3) for enabling the water inlet cavity (4.1) and the detection cavity (4.2) to communicate with each other; a plurality of water inlets (4.4) are provided at intervals on the circumferential sidewall of the water inlet cavity (4.1); the light processor (5) is provided in the detection cavity (4.2); the water pump (6) is provided below the detection cavity (4.2), and its water inlet end (6.2) is connected to the water outlet (4.6) at the bottom of the detection cavity (4.2).

6. The oil leakage monitoring device for water surface sampling according to claim 1, characterized in that: A hook (2) is provided on the top of the floating monitoring body.

7. The oil leakage monitoring device for water surface sampling according to claim 1, characterized in that: A replaceable float or counterweight is provided at the bottom of the floating monitoring body.

8. The device for monitoring oil leakage by sampling water surface according to any one of claims 1 to 7, characterized in that: The light processor (5) comprises a light detector (5.1), an LED light source (5.5), a quartz glass sheet (5.7), a light-isolating strip (5.8) and a filter (5.9); a plurality of LED light sources (5.5) are evenly distributed along the circumference of the light detector (5.1); the quartz glass sheet (5.7) is arranged below the light detector (5.1) and the LED light source (5.5); the quartz glass sheet (5.7) is embedded with a filter (5.9) at a position below the light detector (5.1); and a light-isolating strip (5.8) is provided between the filter (5.9) and the quartz glass sheet (5.7).

9. The oil leakage monitoring device for water surface sampling according to claim 8, characterized in that: The light processor (5) further comprises an AD converter (5.2), a microprocessor (5.3), a controlled constant current source (5.4) and a bus driver (5.6); the AD converter (5.2) is arranged between the light detector (5.1) and the microprocessor (5.3), and is used to convert the light intensity signal of the light detector (5.1) into a digital signal and transmit it to the microprocessor (5.3); the controlled constant current source (5.4) is arranged between the microprocessor (5.3) and the LED light source (5.5), and is used to drive the LED light source (5.5) to generate excitation light according to instructions from the microprocessor (5.3); and the bus driver (5.6) is connected to the microprocessor (5.3) to achieve communication with an external host computer.

10. The oil leakage monitoring device for water surface sampling according to claim 8, characterized in that: The relative position of the light detector (5.1) and the LED light source (5.5) must satisfy the following requirement: the excitation light emitted by the LED light source (5.5) will not enter the light detector (5.1) after being reflected by the quartz glass sheet (5.7).

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