CN114720404A - Soil crude oil pollutant detection device - Google Patents

Abstract

The invention provides a soil crude oil pollutant detection device, comprising: a casing, the casing is provided with a transparent optical window, the soil crude oil pollutant detection device is inserted into the soil to be measured, and the soil to be measured is shielded outside the optical window; a laser collimating lens , the laser collimating lens is connected with the infrared laser and can emit laser light; the laser receiving lens, the laser receiving lens is connected with the optical analysis instrument, and can receive the reflected laser light, and the laser light emitted by the laser collimating lens is irradiated to the object to be measured through the optical window On the soil, and under the effect of the diffuse reflection of the soil to be tested, the laser is again injected into the laser receiving lens through the optical window. The invention solves the problems of complicated, time-consuming and labor-intensive detection process of crude oil pollutants in soil in the prior art.

Description

Soil Crude Oil Pollutant Detection Device

technical field

The invention relates to the technical field of safety and environmental protection, in particular to a soil crude oil pollutant detection device.

Background technique

Crude oil is one of the main energy sources for the survival and development of human society. However, due to complex reasons such as environmental corrosion, natural disasters and human factors, the leakage of crude oil pipelines produces oil and gas pollutants, resulting in environmental pollution and hidden dangers such as fire and explosion. The near-field of crude oil leaked from buried oil pipelines is the soil medium. When petroleum pollutants enter the soil environment, the damage degree exceeds the speed of the self-purification of the soil. The long-term accumulation process will lead to the imbalance of the normal function of the soil environment and the decline of soil quality. and ultimately affect human health through the food chain.

At present, there is no perfect environmental quality detection method system for crude oil and related pollutants in soil, which causes a lot of inconvenience to the environmental hazard analysis of oily soil. Most of the existing methods that can quickly and on-site detect crude oil pollutants in soil adopt the sampling analysis method. When detecting and analyzing crude oil pollutants in soil, the oil components in the soil samples need to be extracted and then extracted and concentrated. , cleaning, saponification, filtration, chromatography and a series of complex pretreatment steps, which consume a lot of detection time and cost.

At present, there is a lack of devices that can realize in-situ and rapid detection of soil crude oil pollutants, and petroleum organic pollutants in soil are a kind of pollution problem that can seriously threaten human survival and sustainable social development. The emphasis on research and development is also increasing.

SUMMARY OF THE INVENTION

The main purpose of the present invention is to provide a device for detecting crude oil pollutants in soil, so as to solve the problems in the prior art that the detection process of crude oil pollutants in soil is complicated, time-consuming and labor-intensive.

In order to achieve the above purpose, the present invention provides a soil crude oil contaminant detection device, comprising: a casing, the casing is provided with a transparent optical window, the soil crude oil pollution detection device is inserted into the soil to be measured, and the soil to be measured is shielded outside the optical window ; Laser collimating lens, the laser collimating lens is connected with the infrared laser, and can emit laser light; the laser receiving lens, the laser receiving lens is connected with the optical analysis instrument, and can receive the reflected laser light, and the laser light emitted by the laser collimating lens passes through the optical The window is irradiated on the soil to be tested, and under the action of the diffuse reflection of the soil to be tested, the laser is injected into the laser receiving lens through the optical window again.

Further, the device for detecting soil crude oil pollutants further includes a focusing lens, the focusing lens is fixedly arranged in the housing, and the laser collimating lens is installed at the center of the focusing lens, and at least part of the laser light reflected by the diffuse reflection of the soil to be tested is focused. The light is irradiated on the laser receiving lens under the converging action of the lens.

Further, the inner wall of the casing is provided with a fixing slot, and the outer edge of the focusing lens is fixed on the fixing slot.

Further, the device for detecting soil and crude oil pollutants further includes a notch filter for filtering particle scattering and stray radiation, and the notch filter is arranged between the focusing lens and the laser receiving lens.

Further, the housing has a partition, the partition divides the housing into a first cavity and a second cavity, and the first cavity is sealed and arranged, the laser collimating lens is arranged in the first cavity, and the optical window is opened in the first cavity. On the side wall, the laser receiving lens is penetrated at the center of the partition.

Further, the laser collimating lens is connected with the infrared laser through the transmitting fiber, and the partition is provided with a via hole for the transmitting fiber to pass through, and the laser receiving lens is connected with the optical analysis instrument through the receiving fiber.

Further, the soil and crude oil pollutant detection device also includes a prismatic reflector, the prismatic reflector is arranged in the casing and has a reflecting slope, the optical window is opened on the side of the casing, and the laser light emitted by the laser collimating lens is irradiated on the reflecting slope, and After being reflected by the reflective slope, it is irradiated on the soil to be tested outside the optical window. The diffusely reflected laser light of the soil to be tested is irradiated on the reflective slope, and reflected on the reflective slope and then irradiated on the laser receiving lens.

Further, the surface of the reflective slope is coated with a silicon dioxide protective layer gold film.

Further, the housing has a movably arranged baffle, a side surface of the housing is provided with an accommodating slot, the baffle is movably arranged in the accommodating slot, and can extend out of the accommodating slot to close the optical window or retract the accommodating slot to open the optical window.

Further, one end of the baffle protruding from the accommodating groove has an obliquely arranged knife-edge cut surface, and the surface of the baffle facing the optical window has soil-stained wiping cotton for wiping the optical window.

Further, the optical window is an optical glass piece, the outer side of the optical window is coated with a wear-resistant layer, and the inner side of the optical window is coated with an infrared antireflection film.

Further, the soil crude oil pollutant detection device also includes: an electric motor box, the electric motor box is arranged at one end of the outer casing extending into the soil to be tested, and a motor is arranged in the electric motor box; the pushing drill bit is arranged on the electric motor box, and is electrically connected with the motor. connect.

Further, the end of the casing away from the soil to be tested has a connecting portion, and the soil crude oil pollutant detection device further includes a connecting rod, and the connecting rod is detachably connected to the connecting portion.

By applying the technical scheme of the present invention, through the provided laser collimating lens and laser receiving lens, when in use, the soil crude oil pollutant detection device is inserted into the soil to be measured, and the laser collimating lens collimates and expands the laser light of the infrared laser. beam, so that the detection area expands with the increase of the laser spot area. The laser collimator lens emits the laser light, and the emitted laser light passes through the transparent optical window and irradiates the soil to be tested on the outside. The crude oil pollutant molecules in the soil surface will absorb the infrared laser energy, and the laser energy will be attenuated. Due to the large roughness of the soil surface, the laser will undergo diffuse reflection, and part of the laser near the vertical optical window will reverse again under the diffuse reflection. It is injected into the casing through the optical window, received by the laser receiving lens, and transmitted to optical analysis instruments such as micro-grating spectrometers or photodetectors for corresponding analysis. The detected oily soil absorption spectrum signal is compared and analyzed with the established oily soil absorption spectrum map database with different concentrations. The obtained absorption spectrum peak is substituted into the calibration fitting equation to realize the detection of the concentration of crude oil pollutants in the soil to be measured. The above setting method uses laser absorption spectroscopy technology to detect oily soil and transmit it to the data analysis system to obtain the concentration information of crude oil pollutants in the soil in the reflected light, which does not require complex sample processing, and can be fast, non-destructive and accurate. The in-situ detection of soil crude oil pollutants can provide the feature identification and concentration detection functions of crude oil pollutants for the pollution detection of petrochemical and oil and gas storage and transportation sites and the later soil remediation quality evaluation.

Description of drawings

The accompanying drawings forming a part of the present application are used to provide further understanding of the present invention, and the exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the attached image:

Fig. 1 shows the structural schematic diagram of the soil crude oil pollutant detection device of the present invention;

FIG. 2 shows a cross-sectional view of the soil crude oil contaminant detection device in FIG. 1 .

Wherein, the above-mentioned drawings include the following reference signs:

10, housing; 11, optical window; 12, partition; 13, baffle; 14, accommodating groove; 20, laser collimating lens; 30, laser receiving lens; 40, focusing lens; 50, transmitting fiber; 60, receiving fiber ; 70, prism mirror; 80, motor box; 90, advancing drill; 100, connecting part.

Detailed ways

It should be noted that the embodiments in the present application and the features of the embodiments may be combined with each other in the case of no conflict. The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

In the present invention, unless otherwise stated, the directional words used such as "upper, lower, top, bottom" are usually for the directions shown in the drawings, or for the components themselves in vertical, In terms of vertical or gravitational direction; similarly, for the convenience of understanding and description, "inner and outer" refers to the inner and outer relative to the contour of each component itself, but the above-mentioned orientation words are not used to limit the present invention.

In order to solve the problems in the prior art that the detection process of crude oil pollutants in soil is complex, time-consuming and labor-intensive, the present invention provides a soil crude oil pollutant detection device.

As shown in Figures 1 and 2, a soil and crude oil pollutant detection device includes a casing 10, a laser collimating lens 20 and a laser receiving lens 30. The casing 10 is provided with a transparent optical window 11, and the soil crude oil pollutant detection device is inserted into In the soil to be tested, the soil to be tested is shielded from the outside of the optical window 11; the laser collimating lens 20 is connected to the infrared laser and can emit laser light; the laser receiving lens 30 is connected to the optical analysis instrument, and can receive the reflected laser light, and the laser is collimated. The laser light emitted by the straight lens 20 is irradiated onto the soil to be tested through the optical window 11 , and is again injected into the laser receiving lens 30 through the optical window 11 under the effect of the diffuse reflection of the soil to be tested.

In this embodiment, the laser collimating lens 20 and the laser receiving lens 30 are provided. When in use, the soil crude oil pollutant detection device is inserted into the soil to be tested, and the laser collimating lens 20 collimates and expands the laser beam of the infrared laser. , so that the detection area expands with the increase of the laser spot area. The laser collimating lens 20 emits the laser light, and the emitted laser light passes through the transparent optical window 11 and irradiates the soil to be tested outside. The crude oil pollutant molecules on the soil surface will absorb the infrared laser energy, and the laser energy will be attenuated. Due to the large roughness of the soil surface, the laser will have a diffuse reflection effect, and part of the laser light that is approximately vertical to the optical window 11 will reflect under the effect of diffuse reflection. The laser beam enters the housing 10 through the optical window 11 again, is received by the laser receiving lens 30, and is transmitted to an optical analysis instrument such as a micro-grating spectrometer or a photodetector for corresponding analysis. The detected oily soil absorption spectrum signal is compared and analyzed with the established oily soil absorption spectrum map database with different concentrations. The obtained absorption spectrum peak is substituted into the calibration fitting equation to realize the detection of the concentration of crude oil pollutants in the soil to be measured. The above setting method uses laser absorption spectroscopy technology to detect oily soil and transmit it to the data analysis system to obtain the concentration information of crude oil pollutants in the soil in the reflected light, which does not require complex sample processing, and can be fast, non-destructive and accurate. The in-situ detection of soil crude oil pollutants can provide the feature identification and concentration detection functions of crude oil pollutants for the pollution detection of petrochemical and oil and gas storage and transportation sites and the later soil remediation quality evaluation.

In this embodiment, the soil and crude oil pollutant detection device further includes a focusing lens 40, the focusing lens 40 is fixedly arranged in the housing 10, and the laser collimating lens 20 is installed at the center of the focusing lens 40, so that the laser collimating lens 20 The emitted laser light can be accurately irradiated at a predetermined position, and at least part of the laser light reflected by the diffuse reflection of the soil to be tested will pass through the focusing lens 40, and irradiate on the laser receiving lens 30 under the converging action of the focusing lens 40, thereby The amount of laser light received by the laser light receiving lens 30 is increased, which is beneficial to subsequent data analysis and processing.

Optionally, in this embodiment, four fixing slots are fixed on the inner wall of the housing 10 , the fixing slots are arranged along the circumference of the inner wall of the housing 10 , and the outer edge of the focusing lens 40 is fixed on the fixing slots, thereby The installation of the focusing lens 40 and the laser collimating lens 20 thereon is completed.

Optionally, the soil and crude oil pollutant detection device further includes a notch filter, the notch filter is arranged between the focusing lens 40 and the laser receiving lens 30, and the notch filter is used to filter particle scattering and stray light. radiation, thereby ensuring the reliability and accuracy of the test results.

In this embodiment, the housing 10 has a partition 12, and the partition 12 divides the cavity in the housing 10 into a first cavity and a second cavity, and the first cavity is sealed and provided, and the second cavity can be sealed or sealed as required. It is not airtight, the laser collimating lens 20 is arranged in the first cavity, the optical window 11 is opened on the side wall of the first cavity, and the laser receiving lens 30 is penetrated in the center of the partition 12 and protrudes into the first cavity.

The laser collimating lens 20 in this embodiment is connected to the infrared laser through the transmitting optical fiber 50 , and the partition 12 is provided with a via hole for the transmitting optical fiber 50 to pass through. Similarly, the laser receiving lens 30 is connected to the optical analysis instrument through the receiving optical fiber 60 . Both the transmitting optical fiber 50 and the receiving optical fiber 60 are single-mode single-core optical fibers with FC interface.

In this embodiment, the casing 10 is cylindrical, the laser collimating lens 20 and the laser receiving lens 30 are both arranged along the axis of the casing 10, the laser emitted by the laser collimating lens 20 and the laser received by the laser receiving lens 30 are the same as the The axes of the housing 10 are parallel, and the optical window 11 is arranged on the circumferential sidewall of the housing 10 , so that the laser light emitted by the laser collimating lens 20 needs to be turned to be able to irradiate the optical window 11 . Based on this, the soil and crude oil contaminant detection device in this embodiment further includes a prismatic reflector 70 . This embodiment uses a right-angle prismatic reflector. The prismatic reflector 70 is arranged in the casing 10 , and its right-angle surface is bonded to the casing 10 by means of bonding or the like. The inner wall is connected, and its slope is used as a reflection slope. When the laser is irradiated on the reflection slope, the direction will be changed under the action of the reflection slope. Specifically, the laser light emitted by the laser collimating lens 20 is irradiated on the reflective slope along the axis of the housing 10, and after being reflected by the reflective slope, it is turned 90 degrees and irradiated on the soil to be tested outside the optical window 11. Since the reflected laser light is approximately vertical to the optical window 11, it is irradiated on the reflective slope, and after being reflected by the reflective slope, it is reversed by 90 degrees, irradiated on the focusing lens 40, and converged to the laser receiving lens 30 under the action of the focusing lens 40. superior. And since the laser collimating lens 20 is installed at the center of the focusing lens 40 , it can be ensured that the laser light is irradiated at the center of the reflection slope of the prism mirror 70 .

Optionally, in order to ensure a good reflection effect, in this embodiment, a silicon dioxide protective layer gold film is plated on the surface of the reflection slope.

In this embodiment, the housing 10 has a movably arranged baffle 13, a side surface of the housing 10 is provided with a accommodating groove 14, the baffle 13 is movably arranged in the accommodating groove 14, and can extend out of the accommodating groove 14 to close the optical window 11 or The accommodating groove 14 is retracted to open the optical window 11 , thereby realizing the closed storage and normal use of the soil crude oil pollutant detection device. In this embodiment, the baffle 13 is electrically connected to a control element such as a single-chip microcomputer, and the action of the baffle 13 is controlled by the control element.

Optionally, one end of the baffle plate 13 extending out of the receiving groove 14 has an inclined knife-edge cut surface. Cleaning function.

In this embodiment, the optical window 11 is an optical glass piece, the outer side of the optical window 11 is coated with a wear-resistant layer to reduce the abrasion of the surface of the optical window 11 by soil particles, and the inner side of the optical window 11 is coated with an infrared anti-reflection film to improve the Transmittance of laser light.

In this embodiment, the soil and crude oil pollutant detection device further includes a motor box 80 and a propulsion drill bit 90. The motor box 80 is arranged at the end of the outer casing 10 that extends into the soil to be tested. The motor box 80 is provided with a motor, and is laid with a shock absorber. pads to reduce vibration damage and positional displacement to other optical devices; the propulsion drill bit 90 is arranged on the motor box 80 and is electrically connected to the motor, and the propulsion drill bit 90 has 304 stainless steel helical blades, which improves the performance of the soil crude oil contaminant detection device. Detection rate in soil layers.

Optionally, the end of the casing 10 away from the soil to be tested has a protruding cylindrical connecting portion 100. The soil crude oil pollutant detection device also includes a connecting rod that can be held by the operator. The connecting rod can be provided with There are multiple, and they are of different lengths, and a retractable connecting rod can also be provided, and the connecting rod can be detachably connected to the connecting part 100, so that the soil crude oil pollutant detection device can be extended into the soil to be tested at different depths as required, Therefore, the detection of soil crude oil pollutants in different depth ranges is realized, and the detectable range is improved.

The use process of the soil crude oil pollutant detection device of the present embodiment is as follows:

During the measurement, the infrared laser is turned on. The wavelength of the infrared laser is 2.4 μm. The laser is transmitted to the laser collimating lens 20 through the transmitting fiber 50 to complete the collimation and beam expansion of the laser. The detection area expands with the increase of the laser spot area. The vertical laser beam is refracted into the optical window 11 by the reflection effect of the reflection slope of the prism mirror 70 . The soil to be tested is attached to the outside of the optical window 11, and under the action of laser irradiation, the crude oil pollutant molecules in the surface of the soil to be tested will absorb the infrared laser energy, and the laser energy will be attenuated. Since the surface roughness of the soil to be tested is relatively large, the laser echo signal passes through the optical window 11 again in the form of diffuse reflection to reach the prismatic reflector 70, and the prismatic reflector 70 reflects the echo light approximately perpendicular to the optical window 11 to the focusing lens 40, The echoed light is received by the laser receiving lens 30 through the convergence effect, and the echoed light is transmitted to the micro-grating spectrometer or photodetector through the receiving optical fiber 60 .

The detected oily soil absorption spectrum signal is compared with the established database of oily soil absorption spectrum of different concentrations. According to the proportional relationship between the absorption spectrum peak and the soil oil concentration, a calibration fitting equation is established. Using the spectral information processing system, the detected absorption spectrum peaks are substituted into the calibration fitting equation to realize the detection of the concentration of crude oil pollutants in the soil.

When the detection is finished or the detection position is changed, the baffle 13 is controlled by the single chip to lower, so as to realize the closing of the optical window 11 and reduce the loss of soil particles to the optical window 11 .

It should be noted that a plurality in the above-mentioned embodiments refers to at least two.

From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects:

1. Solve the problems in the prior art that the detection process of crude oil pollutants in soil is complex, time-consuming and labor-intensive;

2. The use of laser absorption spectroscopy to detect oily soil does not require complex sample processing, and can quickly, non-damage and accurately detect soil crude oil pollutants in situ;

3. It can provide feature identification and concentration detection functions of crude oil pollutants for pollution detection of petrochemical and oil and gas storage and transportation sites and later soil remediation quality evaluation;

4. The overall structure is simple, easy to use, and the detection results are accurate and reliable.

Obviously, the above-described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

It should be noted that the terminology used herein is for the purpose of describing specific embodiments only, and is not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural as well, furthermore, it is to be understood that when the terms "comprising" and/or "including" are used in this specification, it indicates that There are features, steps, acts, devices, components, and/or combinations thereof.

It should be noted that the terms "first", "second", etc. in the description and claims of the present application and the above drawings are used to distinguish similar objects, and are not necessarily used to describe a specific sequence or sequence. It is to be understood that data so used may be interchanged under appropriate circumstances so that the embodiments of the application described herein can be practiced in sequences other than those illustrated or described herein.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims (13)

1. a soil crude oil pollutant detection device, is characterized in that, comprises: A casing (10), the casing (10) is provided with a transparent optical window (11), the soil crude oil pollutant detection device is inserted into the soil to be tested, and the soil to be tested is shielded outside the optical window (11) ; a laser collimating lens (20), the laser collimating lens (20) is connected with an infrared laser and capable of emitting laser light; A laser receiving lens (30), the laser receiving lens (30) is connected with an optical analysis instrument and can receive the reflected laser light, and the laser light emitted by the laser collimating lens (20) is irradiated through the optical window (11) onto the soil to be tested, and again enter the laser receiving lens (30) through the optical window (11) under the action of the diffuse reflection of the soil to be tested. 2. The device for detecting soil and crude oil pollutants according to claim 1, wherein the device for detecting soil and crude oil pollutants further comprises a focusing lens (40), and the focusing lens (40) is fixedly arranged on the housing ( 10), and the laser collimating lens (20) is installed at the center of the focusing lens (40), and at least part of the laser light reflected back by the diffuse reflection of the soil to be tested passes through the focusing lens (40) The laser beam is irradiated on the laser receiving lens (30) under the converging action of the laser beam. 3 . The soil and crude oil pollutant detection device according to claim 2 , wherein the inner wall of the casing ( 10 ) has a fixing card groove, and the outer edge of the focusing lens ( 40 ) is fixed on the fixing card. 4 . on the slot. 4 . The soil crude oil pollutant detection device according to claim 2 , wherein the soil crude oil pollutant detection device further comprises a notch filter for filtering particle scattering and stray radiation. A wave filter is arranged between the focusing lens (40) and the laser receiving lens (30). 5 . The soil crude oil pollutant detection device according to claim 1 , wherein the casing ( 10 ) has a partition ( 12 ), and the partition ( 12 ) divides the casing ( 10 ) into a first cavity. 6 . body and a second cavity, and the first cavity is sealed and arranged, the laser collimating lens (20) is arranged in the first cavity, and the optical window (11) is opened in the first cavity The side wall of the partition, the laser receiving lens (30) is penetrated at the center of the partition (12). 6 . The soil crude oil pollutant detection device according to claim 5 , wherein the laser collimating lens ( 20 ) is connected to the infrared laser through an emission optical fiber ( 50 ), and the partition ( 12 ) is provided with 6 . A via hole for the transmitting optical fiber (50) to pass through, and the laser receiving lens (30) is connected with the optical analysis instrument through the receiving optical fiber (60). 7. The device for detecting soil and crude oil pollutants according to claim 1, wherein the device for detecting soil and crude oil pollutants further comprises a prismatic reflector (70), wherein the prismatic reflector (70) is disposed on the housing (10), and has a reflective slope, the optical window (11) is opened on the side of the casing (10), the laser light emitted by the laser collimating lens (20) is irradiated on the reflective slope, and is passed through the reflective slope. After being reflected by the reflective slope, the soil to be tested is irradiated outside the optical window (11), and the diffusely reflected laser light of the soil to be tested is irradiated on the reflective slope, and then irradiated after being reflected by the reflective slope. onto the laser receiving lens (30). 8 . The soil crude oil pollutant detection device according to claim 7 , wherein the surface of the reflective slope is coated with a silicon dioxide protective layer gold film. 9 . 9 . The soil and crude oil pollutant detection device according to claim 1 , wherein the casing ( 10 ) has a movable baffle plate ( 13 ), and a side surface of the casing ( 10 ) is provided with an accommodating groove ( 14 ). 10 . ), the baffle (13) is movably arranged in the accommodating groove (14), and can extend out of the accommodating groove (14) to close the optical window (11) or retract the accommodating groove (14) ) to open the optical window (11). 10. The soil and crude oil pollutant detection device according to claim 9, characterized in that, one end of the baffle plate (13) protruding from the accommodating groove (14) has an inclined knife-edge cut surface, and the baffle plate (13) 13) The surface facing the optical window (11) is provided with soil-stained wiping cotton for wiping the optical window (11). 11 . The soil and crude oil pollutant detection device according to claim 1 , wherein the optical window ( 11 ) is an optical glass piece, the outer side of the optical window ( 11 ) is coated with a wear-resistant layer, and the optical window ( 11 ) is plated with a wear-resistant layer. 12 . The inner side of the window (11) is coated with an infrared anti-reflection film. 12. The soil crude oil pollutant detection device according to claim 1, wherein the soil crude oil pollutant detection device further comprises: an electric motor box (80), the electric motor box (80) is arranged at one end of the outer casing (10) extending into the soil to be tested, and an electric motor is arranged in the electric motor box (80); A push drill bit (90) is provided on the electric motor box (80) and is electrically connected with the electric motor. 13. The device for detecting soil crude oil pollutants according to claim 1, characterized in that, one end of the casing (10) away from the end extending into the soil to be tested has a connecting portion (100), and the soil crude oil pollutant detection device has a connecting portion (100). The device further includes a connecting rod, and the connecting rod is detachably connected with the connecting part (100).

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