Rock pyrolysis split-flow detection device and method

Abstract

The invention provides a rock pyrolysis split-flow detection device and method.The device comprises a sample injection mechanism, a split-flow mechanism and a reverse diffusion prevention mechanism, the sample injection mechanism comprises a heat preservation furnace, a sample injection rod and a crucible, the lower end of the heat preservation furnace is connected with the crucible, and the lower end of the crucible is connected with the sample injection rod; the crucible is used for bearing a rock sample; the shunting mechanism is connected with the sampling mechanism and is arranged at the upper part of the sampling mechanism; the flow dividing mechanism comprises a lower flow dividing pipe, a middle flow dividing pipe and an upper flow dividing pipe which are sequentially communicated from bottom to top, the lower flow dividing pipe is communicated with a first sample carrier gas outlet pipe, the middle flow dividing pipe is communicated with a hydrogen inlet pipe, and the top of the upper flow dividing pipe is communicated with a second sample carrier gas outlet; the reverse diffusion preventing mechanism is arranged in the lower flow dividing pipe and comprises a vertical partition plate and a transverse partition plate. The vertical partition plate is fixedly connected with the transverse partition plate. By designing the special high-temperature split-flow detection device and method, more accurate rock pyrolysis detection is realized.

Description

Technical Field

[0001] The present invention relates to the field of petroleum exploration and development, in particular to a core parameter measurement technology, and in particular to a rock pyrolysis diversion detection device and method. Background Art

[0002] Rock pyrolyzers are essential instruments used in petroleum geochemical research and oil and gas exploration. They typically utilize a three-way pipe with a suction pump and flowmeter for quantitative gas diversion. Hydrocarbons and carbon compounds (CO and CO2) are then quantitatively detected using a flame ionization detector (FID) and infrared spectrometer (IR). Conventional FIDs require a constant flow of hydrogen (H2) and air to generate an electrical signal. However, at low carrier gas flows, particularly during the switching process between the pyrolysis furnace and the oxidation furnace, hydrogen (H2) can be easily diverted by the suction pump and carried into the IR detector. Furthermore, the absorption wavelength of carbon monoxide (CO) detected by the IR spectrometer is typically around 4.6 microns, while that of hydrogen (H2) is typically around 2.3 microns. These characteristic wavelengths are relatively close, so relatively high concentrations of hydrogen (H2) can distort the CO detection data and affect the detection of carbon compounds.

[0003] Patent application with publication number CN105651912A discloses a rock pyrolysis analyzer and pyrolysis analysis method, the pyrolysis process of which is as follows: (1) Sample pyrolysis detection (a) The pyrolysis furnace heats the sample entering the interior from room temperature to 800°C, causing the hydrocarbons contained in the sample A (source rock) to evaporate and crack, and enter the FID detector I along the gas pipeline I, thereby detecting the S0, S1, S2 contents and the maximum cracking temperature Tmax value contained in the sample A (source rock); (b) The pyrolysis furnace heats the sample entering the interior from room temperature to 800°C, causing the hydrocarbons contained in the sample A (source rock) to evaporate and crack, and enter the FID detector I along the gas pipeline I, thereby detecting the S0, S1, S2 contents and the maximum cracking temperature Tmax value contained in the sample A (source rock); Heating to 800℃, the hydrocarbons contained in B (reservoir rock) in the sample are evaporated and cracked, and enter the FID detector I along the gas pipeline I, thereby detecting the content of hydrocarbons S0, S11, S21, S22, and S23 contained in B (reservoir rock) in the sample; (2) Pyrolysis gas detection (a) When the pyrolysis furnace heats the sample inside to 800℃, the vacuum pump I is activated, and the gas containing hydrocarbon information is sent to the carbon monoxide infrared detector through the steady flow valve I and the vacuum pump I, thereby detecting the CO content in the sample at 300℃-500℃; (b ) When the pyrolysis furnace is heating the sample inside to 800℃, the vacuum pump II is operated at the same time, and the gas containing hydrocarbon information is sent to the carbon dioxide infrared detector through the steady flow valve II and the vacuum pump II, and then the CO2 content of 300℃-400℃ in the sample is detected; (c) When the pyrolysis furnace is heating the sample inside to 300℃, the vacuum pump III is operated, and the gas containing hydrocarbon information is sent to the multi-way valve I through the steady flow valve III and the vacuum pump III, and is adsorbed in the quantitative tube I. When the sample temperature is heated to 300℃, the multi-way valve I is actuated to seal the collected gas in the quantitative tube I. After the sample heating is completed, the multi-way valve I is actuated again to send the gas containing hydrocarbon information stored in the quantitative tube I into the capillary chromatographic column I. The carrier gas (nitrogen) enters the capillary chromatographic column I through the pressure-stabilizing valve I and the pressure gauge I at the front end of the capillary chromatographic column I. The gas containing hydrocarbons entering the capillary chromatographic column I from the quantitative tube I flows out from the rear end of the capillary chromatographic column I and is carried by the tail gas (nitrogen) from the flow-stabilizing valve V into the FID detector II, thereby detecting the thermally evaporated hydrocarbon (S0+S1) components contained in the sample;(d) When the pyrolysis furnace is heating the sample inside from 300°C to 600°C, the vacuum pump IV is activated, and the gas containing hydrocarbon information is sent to the multi-way valve II through the flow regulating valve IV and the vacuum pump IV, and is adsorbed in the quantitative tube II. When the sample temperature is heated to 600°C, the multi-way valve II is activated, and the collected gas is sealed in the quantitative tube II. After the sample heating is completed, the multi-way valve II is activated again, and the gas containing hydrocarbon information stored in the quantitative tube II is sent to the capillary chromatographic column II. The carrier gas (nitrogen) enters the capillary chromatographic column II through the pressure regulating valve II and the pressure gauge II at the front end of the capillary chromatographic column II, and carries the gas containing hydrocarbons entering the capillary chromatographic column II from the quantitative tube II to the back end of the capillary chromatographic column II. The sample is carried out through the tail gas (nitrogen) from the capillary column II of the steady flow valve into the FID detector III, thereby detecting the components of the pyrolysis hydrocarbons (S2) contained in the sample; (3) Residual sample detection When the pyrolysis furnace is heated, the residual sample is removed from the pyrolysis furnace and sent to the oxidation furnace. The sample is heated to 600°C by the oxidation furnace, and oxygen is sent from the oxygen delivery pipeline at the bottom of the oxidation furnace to oxidize the residual hydrocarbons in the sample. The oxidized gas (including CO2) enters the capture well and is adsorbed at low temperature (55°C-65°C) in the capture well. When the oxidation process is completed, the capture well is heated to 260°C, so that the adsorbed CO2 gas enters the infrared detector, thereby detecting the content of residual carbon (S4 value) in the sample. This method uses a vacuum pump to pump hydrocarbon-containing gas through a temperature flow valve into an infrared detector (IR). It is a commonly used method in the industry. However, in actual application, when switching furnaces, the mixing of hydrogen (H2) can easily lead to an overestimation of carbon monoxide (CO) detection results.

[0004] Patent application number CN114487078A discloses an air flow stabilization device for a portable FID detector, comprising an air block, a pump, a sensor, and a controller. The air block is used to limit the gas flow rate; the pump is an air pump for delivering gas to the FID detector; the sensor is used to detect the pressure difference across the air block; the controller adjusts the output pump voltage and controls the speed of the pump motor based on the pressure difference detected by the sensor; the gas passes through the air block and is delivered to the FID detector by the pump; the sensor and controller form a feedback loop. In actual high-temperature pyrolysis, conventional suction pumps are difficult to meet the high-temperature operating environment (typically 300°C);

[0005] Patent application publication number CN116336500A discloses an FID detector ignition device, which includes a device body, which includes a mounting shell, a gas flame combustion nozzle, a signal line, a temperature sensor, an ignition device, a hydrogen inlet, and an air inlet. The mounting shell is located at the bottom of the device body, and a line inlet is provided on the right side of the mounting shell. The signal line is installed inside the mounting shell through the line inlet. The temperature sensor and the ignition device are installed on the right side of the mounting shell. The gas flame combustion nozzle device is installed inside the mounting shell. The hydrogen inlet and the air inlet are symmetrically mounted vertically at the bottom of the mounting shell, and a ceramic seat is added. Although the combustion efficiency problem is solved, the problem of hydrogen diffusion is difficult to avoid during actual application. Summary of the Invention

[0006] The rock pyrolysis shunt detection device and method provided by the embodiments of the present invention are intended to address the above-mentioned technical problems by designing a special high-temperature shunt detection device and method to achieve the technical purpose of more accurate detection data. Furthermore, the present invention adds a small hole isolation plate in the furnace body to accelerate the carrier gas locally in the small hole. The small hole itself is equivalent to a gas block. Due to the pressure difference of the carrier gas stroke on both sides of the gas block, the reverse diffusion of H2 is effectively avoided. When the gas controllers of each channel are turned on, the carrier gas (He) carries the sample gas heated by the sample and enters the FID, IR, and UV detectors respectively through the shunt design, thereby improving the detection efficiency of the carrier gas sample and greatly improving the authenticity of the detection results.

[0007] In one aspect, an embodiment of the present invention provides a rock pyrolysis diversion detection device, comprising:

[0008] Injection mechanism, diversion mechanism and back diffusion prevention mechanism, wherein:

[0009] The sample feeding mechanism includes a heat preservation furnace, a sample feeding rod and a crucible. The lower end of the heat preservation furnace is connected to the crucible, and the lower end of the crucible is connected to the sample feeding rod. The crucible is used to carry rock samples.

[0010] The diverter mechanism is connected to the sample injection mechanism and is arranged on the upper part of the sample injection mechanism; the diverter mechanism includes: a lower diverter pipe, a middle diverter pipe and an upper diverter pipe connected in sequence from bottom to top, the lower diverter pipe is connected to the first sample carrier gas outlet pipe, the middle diverter pipe is connected to the hydrogen inlet pipe, and the top of the upper diverter pipe is connected to the second sample carrier gas outlet;

[0011] The anti-backward diffusion mechanism is arranged inside the lower diversion pipe, and includes: a vertical baffle and a transverse baffle; the vertical baffle is fixedly connected to the transverse baffle; the transverse baffle is provided with a funnel-shaped air inlet hole, and the larger opening of the funnel-shaped air inlet hole faces downward; the vertical baffle has an inclined surface relative to the vertical direction, and the inclined surface is relative to the hydrogen inlet pipe.

[0012] In some embodiments of the present invention, a rock pyrolysis diversion detection device further includes:

[0013] The temperature measuring device is arranged on the side wall of the injection rod.

[0014] In some embodiments of the present invention, a rock pyrolysis diversion detection device further includes:

[0015] The carrier gas inlet pipe is arranged at the lower part of the sample injection mechanism and is communicated with the sample injection mechanism.

[0016] In some embodiments of the present invention, a first flow controller is provided at the inlet of the carrier gas inlet pipe.

[0017] In some embodiments of the present invention, the first sample carrier gas outlet is provided with a second flow controller.

[0018] In some embodiments of the present invention, the upper diversion pipe is transversely connected to the air inlet pipe, and the air inlet pipe is provided with a third flow controller.

[0019] In some embodiments of the present invention, a fourth flow controller is provided on the hydrogen inlet pipe.

[0020] In some embodiments of the present invention, the lower portion of the lower shunt pipe is transversely connected to the first sample carrier gas outlet pipe; the upper portion of the lower shunt pipe is transversely connected to the hydrogen inlet pipe.

[0021] In another aspect, an embodiment of the present invention provides a rock pyrolysis diversion detection method, the method comprising:

[0022] Heating a rock sample in a crucible to generate gas;

[0023] opening the first flow controller to allow the helium to carry away the gas and enter the diversion mechanism;

[0024] Open the second flow controller to release hydrogen into the middle diverter pipe;

[0025] The third flow controller is turned on to oxidize the gas.

[0026] In some embodiments of the present invention, a rock pyrolysis diversion detection method further includes:

[0027] Calculate the organic carbon content of the gas at the outlet of the second sample carrier gas.

[0028] Third, an embodiment of the present invention provides a rock pyrolysis diversion detection system, which includes:

[0029] a gas generation module, used for heating a rock sample in a crucible to generate gas;

[0030] a first controller opening module, configured to open the first flow controller so that the helium takes away the gas and enters the diversion mechanism;

[0031] A second controller opening module is used to open the second flow controller to release hydrogen into the middle diverter pipe;

[0032] The third controller starting module is used to start the third flow controller to oxidize the gas.

[0033] In some embodiments of the present invention, a rock pyrolysis diversion detection system further includes:

[0034] The organic carbon content calculation module is used to calculate the organic carbon content of the gas at the second sample carrier gas outlet.

[0035] In a fourth aspect, the present invention provides an electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the rock pyrolysis diversion detection method when executing the program.

[0036] In a fifth aspect, the present invention provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the rock pyrolysis diversion detection method.

[0037] From the above description, it can be seen that an embodiment of the present invention provides a rock pyrolysis shunt detection device and method, which includes: an injection mechanism, a shunt mechanism and an anti-backward diffusion mechanism, wherein: the injection mechanism includes an insulation furnace, an injection rod and a crucible, the lower end of the insulation furnace is connected to the crucible, and the lower end of the crucible is connected to the injection rod; the crucible is used to carry rock samples; the shunt mechanism is connected to the injection mechanism and is arranged on the upper part of the injection mechanism; the shunt mechanism includes: a lower shunt tube, a middle shunt tube and an upper shunt tube connected in sequence from bottom to top, the lower shunt tube is connected to the first sample carrier gas outlet pipe, the middle shunt tube is connected to the hydrogen inlet pipe, and the top of the upper shunt tube is connected to the second sample carrier gas outlet; the anti-backward diffusion mechanism is arranged inside the lower shunt tube, including: a vertical partition and a horizontal partition; the vertical partition is fixedly connected to the horizontal partition; the horizontal partition is provided with a funnel-shaped air inlet hole, and the larger opening of the funnel-shaped air inlet hole faces downward; the vertical partition has an inclined surface relative to the vertical direction, and the inclined surface is relative to the hydrogen inlet pipe.

[0038] The corresponding rock pyrolysis diversion detection method applied to the rock pyrolysis diversion detection device includes: first, heating the rock sample in the crucible to generate gas; then, turning on the first flow controller to allow the helium to carry away the gas and enter the diversion mechanism; turning on the second flow controller to release hydrogen into the middle diversion tube; finally, turning on the third flow controller to oxidize the gas.

[0039] The rock pyrolysis diversion detection device provided in an embodiment of the present invention adds a small hole isolation plate in the furnace body to accelerate the carrier gas locally in the small hole, effectively avoiding the reverse diffusion of H2. The sample gas heated by the carrier gas carries the sample and passes through the diversion pipeline to enter the FID, IR, and UV detectors respectively, thereby improving the detection efficiency of the carrier gas sample and greatly enhancing the authenticity of the detection results. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0041] Figure 1 A schematic flow chart of a rock pyrolysis diversion detection method provided in an embodiment of the present invention;

[0042] Figure 2 Another schematic flow chart of the rock pyrolysis diversion detection method provided in an embodiment of the present invention;

[0043] Figure 3 It is a structural schematic diagram of the flow dividing mechanism and the sample injection mechanism in a specific application example of the present invention;

[0044] Figure 4 It is a cross-sectional view of the overall structure of the detection platform in a specific application example of the present invention;

[0045] Figure 5 A structural diagram of the diversion mechanism in a specific application example of the present invention

[0046] Figure 6 Schematic diagram of the structure of the anti-backward diffusion mechanism in a specific application example of the present invention

[0047] Figure 7 This is a schematic diagram of the working principle of a rock pyrolysis diversion detection device in a specific application example of the present invention;

[0048] Figure 8 It is a side view of a rock pyrolysis diversion detection device in a specific application example of the present invention;

[0049] Figure 9 Schematic diagram of the process of the sample feeding mechanism moving to the holding furnace in a specific application example of the present invention;

[0050] Figure 10 Schematic diagram of the process of rock pyrolysis diversion detection method in a specific application example of the present invention;

[0051] Figure 11This is a flow diagram of the carrier gas in the pyrolysis split flow detection device in a specific application example of the present invention;

[0052] Figure 12 is a block diagram of a rock pyrolysis diversion detection system according to an embodiment of the present invention;

[0053] Figure 13 Schematic diagram of the structure of an electronic device in an embodiment of the present invention.

[0054] Reference numerals:

[0055] 1: Detection platform;

[0056] 2: Sample injection mechanism;

[0057] 3: diversion agency;

[0058] 4: carrier gas inlet pipe;

[0059] 5: Holding furnace;

[0060] 6: injection rod;

[0061] 7: Crucible;

[0062] 8: Temperature measuring device;

[0063] 9: Shunt seat;

[0064] 10: lower shunt pipe;

[0065] 11: middle shunt tube;

[0066] 12: Upper shunt pipe;

[0067] 13: carrier gas outlet pipe;

[0068] 14: Hydrogen inlet pipe;

[0069] 15: Air inlet pipe;

[0070] 16: Second sample carrier gas outlet;

[0071] 17: Anti-backward diffusion mechanism;

[0072] 18: vertical partition;

[0073] 19: horizontal partition;

[0074] 20: air intake;

[0075] 21: upper air inlet;

[0076] 22: air inlet at the lower end;

[0077] 23: first flow controller;

[0078] 24: second flow controller;

[0079] 25: the third flow controller;

[0080] 26: Shangcaokou;

[0081] 27: middle notch;

[0082] 28: lower notch;

[0083] 29: Mobile base;

[0084] 30: sliding rod;

[0085] 31: first sample carrier gas outlet;

[0086] 32: The fourth flow controller. DETAILED DESCRIPTION

[0087] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0088] It will be understood by those skilled in the art that embodiments of the present invention may be provided as methods, systems, or computer program products. Thus, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware. Furthermore, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0089] It should be noted that the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or are inherent to these processes, methods, products or devices. The embodiments in this application and the features described in the embodiments may be combined with each other unless there is a conflict. The present application will be described in detail below with reference to the drawings and in conjunction with the embodiments.

[0090] The acquisition, storage, use, and processing of data in the technical solution of this application comply with relevant laws and regulations.

[0091] Example 1:

[0092] Based on the above reasons, an embodiment of the present invention provides a specific implementation of a rock pyrolysis diversion detection device, which specifically includes the following contents:

[0093] Injection mechanism, diversion mechanism and back diffusion prevention mechanism, wherein:

[0094] The sample feeding mechanism includes a heat preservation furnace, a sample feeding rod and a crucible. The lower end of the heat preservation furnace is connected to the crucible, and the lower end of the crucible is connected to the sample feeding rod. The crucible is used to carry rock samples.

[0095] The diverter mechanism is connected to the sample injection mechanism and is arranged on the upper part of the sample injection mechanism; the diverter mechanism includes: a lower diverter pipe, a middle diverter pipe and an upper diverter pipe connected in sequence from bottom to top, the lower diverter pipe is connected to the first sample carrier gas outlet pipe, the middle diverter pipe is connected to the hydrogen inlet pipe, and the top of the upper diverter pipe is connected to the second sample carrier gas outlet;

[0096] The anti-backward diffusion mechanism is arranged inside the lower diversion pipe, and includes: a vertical baffle and a transverse baffle; the vertical baffle is fixedly connected to the transverse baffle; the transverse baffle is provided with a funnel-shaped air inlet hole, and the larger opening of the funnel-shaped air inlet hole faces downward; the vertical baffle has an inclined surface relative to the vertical direction, and the inclined surface is relative to the hydrogen inlet pipe.

[0097] Also, see Figure 1 The embodiment of the present invention further provides a specific implementation of a rock pyrolysis diversion detection method, which includes the following steps:

[0098] Step 100: heating a rock sample in a crucible to generate gas;

[0099] Step 200: Turn on the first flow controller to allow the helium to carry away the gas and enter the diversion mechanism;

[0100] Step 300: Open the second flow controller to release hydrogen into the middle diverter pipe;

[0101] Step 400: Turn on the third flow controller to oxidize the gas.

[0102] From the above description, it can be seen that an embodiment of the present invention provides a rock pyrolysis shunt detection device and method, which includes: an injection mechanism, a shunt mechanism and an anti-backward diffusion mechanism, wherein: the injection mechanism includes an insulation furnace, an injection rod and a crucible, the lower end of the insulation furnace is connected to the crucible, and the lower end of the crucible is connected to the injection rod; the crucible is used to carry rock samples; the shunt mechanism is connected to the injection mechanism and is arranged on the upper part of the injection mechanism; the shunt mechanism includes: a lower shunt tube, a middle shunt tube and an upper shunt tube connected in sequence from bottom to top, the lower shunt tube is connected to the first sample carrier gas outlet pipe, the middle shunt tube is connected to the hydrogen inlet pipe, and the top of the upper shunt tube is connected to the second sample carrier gas outlet; the anti-backward diffusion mechanism is arranged inside the lower shunt tube, including: a vertical partition and a horizontal partition; the vertical partition is fixedly connected to the horizontal partition; the horizontal partition is provided with a funnel-shaped air inlet hole, and the larger opening of the funnel-shaped air inlet hole faces downward; the vertical partition has an inclined surface relative to the vertical direction, and the inclined surface is relative to the hydrogen inlet pipe.

[0103] The corresponding rock pyrolysis diversion detection method applied to the rock pyrolysis diversion detection device includes: first, heating the rock sample in the crucible to generate gas; then, turning on the first flow controller to allow the helium to carry away the gas and enter the diversion mechanism; turning on the second flow controller to release hydrogen into the middle diversion tube; finally, turning on the third flow controller to oxidize the gas.

[0104] The rock pyrolysis diversion detection device provided in an embodiment of the present invention adds a small hole isolation plate in the furnace body to accelerate the carrier gas locally in the small hole, effectively avoiding the reverse diffusion of H2. The sample gas heated by the carrier gas carries the sample and passes through the diversion pipeline to enter the FID, IR, and UV detectors respectively, thereby improving the detection efficiency of the carrier gas sample and greatly enhancing the authenticity of the detection results.

[0105] The present invention establishes identification models of different lithologies by analyzing the logging response laws and differences of different lithologies, thereby improving the accuracy of lithology identification.

[0106] Example 2:

[0107] In some embodiments of the present invention, rock pyrolysis is an important method for studying the abundance, type, maturity, and oil and gas generation potential of organic matter during oil and gas field exploration experiments. Rock samples are typically subjected to laboratory pyrolysis analysis to simulate the maturation process under high-temperature and high-pressure underground conditions and to evaluate their oil and gas production potential. Preferably, rock pyrolysis includes the following:

[0108] Rock pyrolysis analysis:

[0109] S1 peak: measures the free hydrocarbons (i.e. crude oil) already present in the sample, which are light hydrocarbons that can be volatilized without heating.

[0110] S2 peak: Heating the sample, usually to around 500°C, simulates pyrolysis in geological processes and measures the amount of oil and gas generated by pyrolyzing organic matter (kerogen).

[0111] S3 peak: Measures the released CO2 to assess the carbon oxidized content in the sample, which is usually related to the type of organic matter.

[0112] Tmax: The maximum temperature at which hydrocarbons are released from the S2 peak, used to assess the thermal maturity of organic matter.

[0113] Organic carbon content: An assessment of the amount of organic matter in a rock, usually expressed as a weight percentage.

[0114] Pyrolysis-Gas Chromatography: Rock samples are heated and decomposed in a pyrolysis apparatus. The hydrocarbons and other compounds produced are then separated and identified using a gas chromatograph.

[0115] Pyrolysis-GC-MS analysis: Combining pyrolysis, gas chromatography, and mass spectrometry allows for detailed identification and quantitative analysis of organic compounds produced by pyrolysis.

[0116] Vitrinite reflectance analysis: The maturity of organic matter is assessed by measuring the light reflectance of a specific organic matter particle (vitrinite).

[0117] It can be understood that through the above experiments and analysis, the type, content, maturity of organic matter in sedimentary rocks and its potential to produce oil and gas can be evaluated, thereby predicting potential oil and gas resources and guiding the exploration and development of oil and gas fields.

[0118] In some embodiments of the present invention, a rock pyrolysis diversion detection device further includes:

[0119] The temperature measuring device is arranged on the side wall of the injection rod.

[0120] In some embodiments of the present invention, a rock pyrolysis diversion detection device further includes:

[0121] The carrier gas inlet pipe is arranged at the lower part of the sample injection mechanism and is communicated with the sample injection mechanism.

[0122] In some embodiments of the present invention, a first flow controller is provided at the inlet of the carrier gas inlet pipe.

[0123] A flow controller is a device used to regulate the flow of a fluid (liquid or gas). Flow controllers can be divided into several types based on how they control the flow:

[0124] Mechanical flow controllers: These contain an adjustable valve and a flow meter. An operator manually adjusts the valve to control the amount of fluid flowing through.

[0125] Electronic Flow Controllers: These devices utilize electronics to precisely control fluid flow. They have a sensor that measures the mass of fluid flowing through the flowmeter and a control loop that adjusts a control valve to maintain the set flow rate.

[0126] Mass flow controller: used to control the mass flow rate of a fluid, rather than the volume flow rate.

[0127] Thermal flow controllers: These types of controllers measure and control fluid flow based on heat transfer. They heat a small portion of the fluid and measure the heat exchange between the heating element and the fluid to calculate the flow rate.

[0128] Differential Pressure Flow Controllers: These controllers calculate flow by measuring the pressure difference of a fluid flowing through an obstruction such as an orifice plate, venturi, or flow nozzle.

[0129] Preferably, the selection of a flow controller is generally based on the type of fluid (liquid or gas), flow range, operating pressure, temperature range, accuracy and repeatability requirements, whether remote control or monitoring is required, and compatibility (material compatibility, electrical interface, etc.).

[0130] In some embodiments of the present invention, the first sample carrier gas outlet is provided with a second flow controller.

[0131] In some embodiments of the present invention, the upper diversion pipe is transversely connected to the air inlet pipe, and the air inlet pipe is provided with a third flow controller.

[0132] In some embodiments of the present invention, a fourth flow controller is provided on the hydrogen inlet pipe.

[0133] In some embodiments of the present invention, the lower portion of the lower shunt pipe is transversely connected to the first sample carrier gas outlet pipe; the upper portion of the lower shunt pipe is transversely connected to the hydrogen inlet pipe.

[0134] In some embodiments of the present invention, a rock pyrolysis diversion detection device includes three main parts: a sampling mechanism, a diversion mechanism, and a detection platform.

[0135] A diversion mechanism is provided at the upper end of the sampling mechanism, and a carrier gas inlet pipe is provided at the lower end of the sampling mechanism. The carrier gas inlet pipe is connected to the sampling mechanism. The sampling mechanism is arranged on the base of the detection platform. The sampling mechanism includes a heat preservation furnace, a sampling rod and a crucible. The lower end of the heat preservation furnace is connected to the crucible, and the lower end of the crucible is connected to the sampling rod. A temperature measuring device is provided in the sampling rod, and the temperature measuring device is arranged on the side wall of the sampling rod near the crucible.

[0136] The diversion mechanism includes a diversion seat, a lower diversion tube, a middle diversion tube and an upper diversion tube. The lower diversion tube, the middle diversion tube and the upper diversion tube are respectively connected to the diversion seat. The lower end of the lower diversion tube is horizontally connected to the first sample carrier gas outlet pipe, the upper end of the lower diversion tube is connected to the hydrogen inlet pipe, the upper diversion tube is connected to the air inlet pipe, and the upper end of the upper diversion tube is connected to the second sample carrier gas outlet. An anti-backward diffusion device is provided in the lower diversion tube. The anti-backward diffusion device includes a vertical partition and a horizontal partition. The vertical partition and the horizontal partition are fixedly connected and arranged parallel to the lower diversion tube. The horizontal partition is arranged perpendicular to the lower diversion tube and is provided with an air inlet. The air inlet is arranged at the center of the horizontal partition. The air inlet includes an upper air inlet and a lower air inlet. The diameter of the upper air inlet is smaller than the diameter of the lower air inlet.

[0137] A first flow controller is provided at the inlet of the carrier gas inlet pipe, a second flow controller is provided at the first sample carrier gas outlet, a third flow controller is provided on the air inlet pipe, and a fourth flow controller is provided on the hydrogen inlet pipe. The upper end of the diverter seat is connected to the second sample carrier gas outlet, and an upper slot, a middle slot and a lower slot are provided on one side of the diverter seat respectively. The upper slot is connected to the air inlet pipe, the middle slot is connected to the hydrogen inlet pipe, and the lower slot is connected to the first sample carrier gas outlet. The anti-backward diffusion device is provided in the lower diverter pipe between the middle slot and the lower slot. The upper end of the lower diverter pipe is semicircular and connected to the middle diverter pipe, and the lower end of the upper diverter pipe is in an inverted funnel shape and connected to the middle diverter pipe. The temperature measuring device includes a thermocouple, which is provided at the lower end of the crucible in the injection rod. The lower end of the injection rod is provided with a movable base, which is slidably provided on the sliding rod, and the sliding rod is connected to the detection platform. In addition, the rock sample is placed inside the crucible.

[0138] In some embodiments of the present invention, for steps 100 to 400, during the detection process, the injection rod in the injection device moves upward through the movable base, and during the movement, the crucible on it is driven to enter the interior of the insulation furnace. During this process, the heating furnace in the injection rod is heated, so that the material in the crucible is heated and releases gas. During the release process, the first flow controller is turned on to drive the helium to move upward, and the helium takes away the heated and released gas and enters the diversion device; the diversion is carried out through the lower diversion pipe in the diversion device, and a part enters the first sample carrier gas outlet to extract the initial sample for detection, and the other part continues to move upward through the anti-back diffusion device to enter the upper part of the upper diversion pipe. At this time, the second flow controller releases hydrogen and moves upward into the middle diversion pipe.

[0139] During this process, since hydrogen enters the upper end of the lower diversion tube, the hydrogen is prevented from flowing back into the first sample carrier gas pipeline during the upward movement. Vertical and horizontal partitions of the anti-backward diffusion device are set to ensure the upward movement of hydrogen. During this process, air is oxidized through the air inlet pipe in the upper diversion tube to form a second sample carrier gas outlet gas, which is detected by the second sample carrier gas and the organic carbon content is finally calculated.

[0140] In some embodiments of the present invention, see Figure 2 , a rock pyrolysis diversion detection method also includes:

[0141] Step 500: Calculate the organic carbon content of the gas at the outlet of the second sample carrier gas.

[0142] Preferably, the organic carbon content is expressed as a volume ratio (such as ppm or ppb). By measuring the concentration of each organic compound, the total organic carbon content can be estimated by the following formula:

[0143]

[0144] Where f(Ci) is the carbon content function of the i-th organic compound, which can be calculated based on the molecular formula of the compound.

[0145] From the above description, it can be seen that an embodiment of the present invention provides a rock pyrolysis shunt detection device and method, which includes: an injection mechanism, a shunt mechanism and an anti-backward diffusion mechanism, wherein: the injection mechanism includes an insulation furnace, an injection rod and a crucible, the lower end of the insulation furnace is connected to the crucible, and the lower end of the crucible is connected to the injection rod; the crucible is used to carry rock samples; the shunt mechanism is connected to the injection mechanism and is arranged on the upper part of the injection mechanism; the shunt mechanism includes: a lower shunt tube, a middle shunt tube and an upper shunt tube connected in sequence from bottom to top, the lower shunt tube is connected to the first sample carrier gas outlet pipe, the middle shunt tube is connected to the hydrogen inlet pipe, and the top of the upper shunt tube is connected to the second sample carrier gas outlet; the anti-backward diffusion mechanism is arranged inside the lower shunt tube, including: a vertical partition and a horizontal partition; the vertical partition is fixedly connected to the horizontal partition; the horizontal partition is provided with a funnel-shaped air inlet hole, and the larger opening of the funnel-shaped air inlet hole faces downward; the vertical partition has an inclined surface relative to the vertical direction, and the inclined surface is relative to the hydrogen inlet pipe.

[0146] The corresponding rock pyrolysis diversion detection method applied to the rock pyrolysis diversion detection device includes: first, heating the rock sample in the crucible to generate gas; then, turning on the first flow controller to allow the helium to carry away the gas and enter the diversion mechanism; turning on the second flow controller to release hydrogen into the middle diversion tube; finally, turning on the third flow controller to oxidize the gas.

[0147] The rock pyrolysis diversion detection device provided in an embodiment of the present invention adds a small hole isolation plate in the furnace body to accelerate the carrier gas locally in the small hole, effectively avoiding the reverse diffusion of H2. The sample gas heated by the carrier gas carries the sample and passes through the diversion pipeline to enter the FID, IR, and UV detectors respectively, thereby improving the detection efficiency of the carrier gas sample and greatly enhancing the authenticity of the detection results.

[0148] Example 3:

[0149] To further illustrate this solution, the present invention also provides a specific application example of a rock pyrolysis diversion detection device and method.

[0150] See also Figure 3 A high-temperature rock pyrolysis diversion detection device includes a detection platform 1, a sampling mechanism 2 is provided on the detection platform 1, and a diversion mechanism 3 is provided on the upper end of the sampling mechanism 2.

[0151] A carrier gas inlet pipe 4 is provided at the lower end of the sampling mechanism 2, and the carrier gas inlet pipe 4 is connected to the sampling mechanism 2. The sampling mechanism 2 is installed on the base of the detection platform 1. The sampling mechanism 2 includes a heat preservation furnace 5, a sampling rod 6 and a crucible 7. The lower end of the heat preservation furnace 5 is connected to the crucible 7, and the lower end of the crucible 7 is connected to the sampling rod 6. A temperature measuring device 8 is provided in the sampling rod 6, and the temperature measuring device 8 is installed on the side wall of the sampling rod 6 near the crucible 7.

[0152] The diversion mechanism 3 includes a diversion seat 9, a lower diversion pipe 10, a middle diversion pipe 11 and an upper diversion pipe 12. The lower diversion pipe 10, the middle diversion pipe 11 and the upper diversion pipe 12 are respectively connected to the diversion seat 9. Figure 4 The lower end of the lower diversion tube 10 is horizontally connected to the first sample carrier gas outlet pipe 13, the upper end of the lower diversion tube 10 is connected to the hydrogen inlet pipe 14, the upper diversion tube 12 is connected to the air inlet pipe 15, and the upper end of the upper diversion tube 12 is connected to the second sample carrier gas outlet 16.

[0153] Next, see Figure 5 as well as Figure 6 The lower shunt pipe 10 is provided with an anti-backward diffusion mechanism 17, which includes a vertical baffle 18 and a horizontal baffle 19. The vertical baffle 18 and the horizontal baffle 19 are fixedly connected. The vertical baffle 18 is arranged parallel to the lower shunt pipe 10, and the horizontal baffle 19 is arranged perpendicular to the lower shunt pipe 10. Figure 5 The transverse partition 19 is provided with an air inlet 20 , and the air inlet 20 is provided at the center position of the transverse partition 19 .

[0154] See also Figure 5 The air inlet hole 20 includes an upper air inlet hole 21 and a lower air inlet hole 22 , and the diameter of the upper air inlet hole 21 is smaller than the diameter of the lower air inlet hole 22 .

[0155] See also Figure 7 as well as Figure 8 A first flow controller 23 is provided at the inlet of the carrier gas inlet pipe 4, a second flow controller 24 is provided at the first sample carrier gas outlet 31, a third flow controller 25 is provided on the air inlet pipe 15, and a fourth flow controller 32 is provided on the hydrogen inlet pipe 14.

[0156] See also Figure 3 The upper end of the diverter seat 9 is connected to the second sample carrier gas outlet 16, and an upper slot 26, a middle slot 27 and a lower slot 28 are respectively provided on one side of the diverter seat 9. The upper slot 26 is connected to the air inlet pipe 15, the middle slot 27 is connected to the hydrogen inlet pipe 14, and the lower slot 28 is connected to the first sample carrier gas outlet pipe 16.

[0157] See also Figure 9 The anti-backward diffusion mechanism 17 is arranged in the lower diverter pipe 10 between the middle groove port 27 and the lower groove port 28 .

[0158] Continue to see Figure 9 The upper end of the lower diversion pipe 10 is semicircular and connected to the middle diversion pipe 11 , and the lower end of the upper diversion pipe 12 is in an inverted funnel shape and connected to the middle diversion pipe 11 .

[0159] See also Figure 3 The temperature measuring device 8 includes a thermocouple, which is arranged at the lower end of the crucible 7 in the injection rod 6. The lower end of the injection rod 6 is provided with a movable base 29, which is slidably mounted on a sliding rod 30, and the sliding rod 30 is connected to the detection platform 1.

[0160] A thermocouple is a temperature measurement and temperature control device based on the Seebeck effect. The thermocouple joins two different conductive materials together in a closed loop formed at the joint. If the two joints are at different temperatures, a voltage difference will be generated. This voltage difference is proportional to the temperature difference between the two joints.

[0161] Specifically, a thermocouple consists of two different metal or alloy wires welded together to form a hot junction at one end and a cold junction at the other. The hot junction is at the temperature being measured, while the cold junction is maintained at a known reference temperature, typically the temperature of an ice-water mixture (0°C). Alternatively, the cold junction temperature can be measured and compensated using a temperature sensor.

[0162] See also Figure 10 Based on the above-mentioned high-temperature rock pyrolysis diversion detection device, the present invention also provides a specific application example of a rock pyrolysis diversion detection device and method.

[0163] S1: Heat the crucible to release the gas.

[0164] During the detection process, the sample injection rod 6 in the sample injection mechanism 2 moves upward through the movable base 29, and during the movement, the crucible 7 on it is driven to enter the interior of the heat preservation furnace 5. During this process, the heating furnace in the sample injection rod 6 is heated, causing the material in the crucible 7 to heat and release gas. During the release process, the first flow controller 23 is turned on to drive the helium upward, and the helium carries away the heated and released gas and enters the diversion mechanism;

[0165] S2: The gas is diverted through a diversion mechanism.

[0166] In the diversion mechanism 3, the flow is diverted through the lower diversion pipe 10. A portion of the flow enters the first sample carrier gas outlet 31 to extract the initial sample for detection, and the other portion continues to move upward through the anti-backward diffusion mechanism 17 and enters the upper part of the upper diversion pipe 12. At this time, the second flow controller 24 releases hydrogen and then moves upward into the middle diversion pipe.

[0167] S3: Calculate the organic carbon content.

[0168] During this process, since hydrogen enters the upper end of the lower diversion tube 10, the hydrogen is prevented from flowing back into the first sample carrier gas outlet 31 pipe during the upward movement. The vertical baffle 18 and the horizontal baffle 19 of the anti-backward diffusion mechanism 17 are set to ensure the upward movement of hydrogen. In this process, the air is oxidized through the air inlet pipe in the upper diversion tube 12 to form the second sample carrier gas outlet 16 gas. The second sample carrier gas is used for detection to calculate the organic carbon content.

[0169] See also Figure 11 In step S1 to step S3, during the detection process, the sampling rod in the sampling mechanism 2 moves upward through the movable base 29, and during the movement, the crucible 7 on it is driven to enter the interior of the insulation furnace 6. During this process, the heating furnace in the sampling rod 6 is heated, so that the material in the crucible 7 is heated to release gas. During the release process, the first flow controller 23 is turned on to drive the helium to move upward, and the helium takes away the heated and released gas and enters the diversion mechanism 3; the diversion mechanism 3 is diverted through the lower diversion pipe 10, and a part enters the first sample carrier gas outlet 31 to extract the initial sample for detection, and the other part continues to move upward. It moves through the anti-back diffusion device 17 and enters the upper part of the upper diversion pipe 12. At this time, the second flow controller 24 releases hydrogen and enters the middle diversion pipe 11 upward; in this process, since the hydrogen enters the upper end of the lower diversion pipe 10, the hydrogen is prevented from flowing back into the first sample carrier gas pipeline during the upward movement. The vertical baffle 18 and the horizontal baffle 19 of the anti-back diffusion device 17 are set to ensure the upward movement of hydrogen. In this process, the air is oxidized through the air inlet pipe in the upper diversion pipe 12 to form the second sample carrier gas outlet 16 gas. The organic carbon content is calculated by detecting the gas at the second sample carrier gas outlet 16.

[0170] From the above description, it can be seen that an embodiment of the present invention provides a rock pyrolysis shunt detection device and method, which includes: a detection platform, a sampling mechanism is provided on the detection platform, a shunt mechanism is provided at the upper end of the sampling mechanism, a carrier gas inlet pipe is provided at the lower end of the sampling mechanism, the carrier gas inlet pipe is connected to the sampling mechanism, and the sampling mechanism is installed on the base of the detection platform. The sampling mechanism includes a heat preservation furnace, a sampling rod and a crucible. The lower end of the heat preservation furnace is connected to the crucible, and the lower end of the crucible is connected to the sampling rod. The sampling rod is provided with a temperature measuring device, and the temperature measuring device is installed on the side wall of the sampling rod near the crucible. The shunt mechanism includes a lower shunt pipe, a middle shunt pipe and an upper shunt pipe. The crucible on it is driven by the sampling rod to enter the interior of the heat preservation furnace together. The gas controllers of each channel are turned on, and the carrier gas (He) carries the sample gas heated by the sample. Through the shunt design, the detection efficiency of the carrier gas sample is improved, and the authenticity of the detection result is greatly improved.

[0171] Example 4:

[0172] Based on the same inventive concept, the embodiments of the present application also provide a rock pyrolysis shunt detection system, which can be used to implement the method described in the above embodiments, such as the following embodiments. Since the principle of solving the problem by the rock pyrolysis shunt detection system is similar to that of the rock pyrolysis shunt detection method, the implementation of the rock pyrolysis shunt detection system can refer to the implementation of the rock pyrolysis shunt detection method, and the repeated parts will not be repeated. As used below, the term "unit" or "module" can be a combination of software and / or hardware that implements a predetermined function. Although the system described in the following embodiments is preferably implemented in software, implementation in hardware, or a combination of software and hardware, is also possible and conceived.

[0173] The embodiment of the present invention provides a specific implementation of a rock pyrolysis diversion detection system capable of implementing a rock pyrolysis diversion detection method, see Figure 12 , a rock pyrolysis diversion detection system includes:

[0174] A gas generating module 10 is used to heat the rock sample in the crucible to generate gas;

[0175] A first controller opening module 20 is used to open the first flow controller to allow the helium to take away the gas and enter the diversion mechanism;

[0176] The second controller opening module 30 is used to open the second flow controller to release hydrogen into the middle diverter pipe;

[0177] The third controller starting module 40 is used to start the third flow controller to oxidize the gas.

[0178] In some embodiments of the present invention, a rock pyrolysis diversion detection system further includes:

[0179] The organic carbon content calculation module is used to calculate the organic carbon content of the gas at the second sample carrier gas outlet.

[0180] From the above description, it can be seen that an embodiment of the present invention provides a rock pyrolysis diversion detection system, including: a gas generation module, used to heat the rock sample in the crucible to generate gas; a first controller opening module, used to open the first flow controller to allow helium to take away the gas and enter the diversion mechanism; a second controller opening module, used to open the second flow controller to release hydrogen into the middle diversion pipe; a third controller opening module, used to open the third flow controller to oxidize the gas.

[0181] The rock pyrolysis diversion detection system provided by the embodiment of the present invention adds a small hole isolation plate in the furnace body to accelerate the carrier gas locally in the small hole, effectively avoiding the reverse diffusion of H2. The sample gas heated by the carrier gas carries the sample and passes through the diversion pipeline to enter the FID, IR, and UV detectors respectively, thereby improving the detection efficiency of the carrier gas sample and greatly enhancing the authenticity of the detection results.

[0182] Embodiment 5:

[0183] The embodiments of the present application also provide a specific implementation of an electronic device capable of implementing all steps of a rock pyrolysis diversion detection method in the above embodiment, see Figure 13 , electronic equipment specifically includes the following:

[0184] Processor 1201, memory 1202, communications interface 1203, and bus 1204;

[0185] The processor 1201, the memory 1202, and the communication interface 1203 communicate with each other via the bus 1204; the communication interface 1203 is used to implement information transmission between the server device and the client device and other related devices;

[0186] The processor 1201 is used to call the computer program in the memory 1202. When the processor executes the computer program, all steps of the rock pyrolysis diversion detection method in the above embodiment are implemented. For example, when the processor executes the computer program, the following steps are implemented:

[0187] Heating a rock sample in a crucible to generate gas;

[0188] opening the first flow controller to allow the helium to carry away the gas and enter the diversion mechanism;

[0189] Open the second flow controller to release hydrogen into the middle diverter pipe;

[0190] The third flow controller is turned on to oxidize the gas.

[0191] The rock pyrolysis diversion detection method is applied to the following rock pyrolysis diversion device, which includes: a sampling mechanism, a diversion mechanism, and an anti-backward diffusion mechanism, wherein:

[0192] The sample feeding mechanism includes a heat preservation furnace, a sample feeding rod and a crucible. The lower end of the heat preservation furnace is connected to the crucible, and the lower end of the crucible is connected to the sample feeding rod. The crucible is used to carry rock samples.

[0193] The diverter mechanism is connected to the sample injection mechanism and is arranged on the upper part of the sample injection mechanism; the diverter mechanism includes: a lower diverter pipe, a middle diverter pipe and an upper diverter pipe connected in sequence from bottom to top, the lower diverter pipe is connected to the first sample carrier gas outlet pipe, the middle diverter pipe is connected to the hydrogen inlet pipe, and the top of the upper diverter pipe is connected to the second sample carrier gas outlet;

[0194] The anti-backward diffusion mechanism is arranged inside the lower diversion pipe, and includes: a vertical baffle and a transverse baffle; the vertical baffle is fixedly connected to the transverse baffle; the transverse baffle is provided with a funnel-shaped air inlet hole, and the larger opening of the funnel-shaped air inlet hole faces downward; the vertical baffle has an inclined surface relative to the vertical direction, and the inclined surface is relative to the hydrogen inlet pipe.

[0195] In some embodiments of the present invention, a rock pyrolysis diversion detection device further includes:

[0196] The temperature measuring device is arranged on the side wall of the injection rod.

[0197] In some embodiments of the present invention, a rock pyrolysis diversion detection device further includes:

[0198] The carrier gas inlet pipe is arranged at the lower part of the sample injection mechanism and is communicated with the sample injection mechanism.

[0199] In some embodiments of the present invention, a first flow controller is provided at the inlet of the carrier gas inlet pipe.

[0200] In some embodiments of the present invention, the first sample carrier gas outlet is provided with a second flow controller.

[0201] In some embodiments of the present invention, the upper diversion pipe is transversely connected to the air inlet pipe, and the air inlet pipe is provided with a third flow controller.

[0202] In some embodiments of the present invention, a fourth flow controller is provided on the hydrogen inlet pipe.

[0203] In some embodiments of the present invention, the lower portion of the lower shunt pipe is transversely connected to the first sample carrier gas outlet pipe; the upper portion of the lower shunt pipe is transversely connected to the hydrogen inlet pipe.

[0204] Example 6:

[0205] The embodiments of the present application also provide a computer-readable storage medium capable of implementing all steps of the rock pyrolysis diversion detection method in the above-mentioned embodiment. The computer-readable storage medium stores a computer program. When the computer program is executed by a processor, all steps of the rock pyrolysis diversion detection method in the above-mentioned embodiment are implemented. For example, when the processor executes the computer program, the following steps are implemented:

[0206] Heating a rock sample in a crucible to generate gas;

[0207] opening the first flow controller to allow the helium to carry away the gas and enter the diversion mechanism;

[0208] Open the second flow controller to release hydrogen into the middle diverter pipe;

[0209] The third flow controller is turned on to oxidize the gas.

[0210] The rock pyrolysis diversion detection method is applied to the following rock pyrolysis diversion device, which includes: a sampling mechanism, a diversion mechanism, and an anti-backward diffusion mechanism, wherein:

[0211] The sample feeding mechanism includes a heat preservation furnace, a sample feeding rod and a crucible. The lower end of the heat preservation furnace is connected to the crucible, and the lower end of the crucible is connected to the sample feeding rod. The crucible is used to carry rock samples.

[0212] The diverter mechanism is connected to the sample injection mechanism and is arranged on the upper part of the sample injection mechanism; the diverter mechanism includes: a lower diverter pipe, a middle diverter pipe and an upper diverter pipe connected in sequence from bottom to top, the lower diverter pipe is connected to the first sample carrier gas outlet pipe, the middle diverter pipe is connected to the hydrogen inlet pipe, and the top of the upper diverter pipe is connected to the second sample carrier gas outlet;

[0213] The anti-backward diffusion mechanism is arranged inside the lower diversion pipe, and includes: a vertical baffle and a transverse baffle; the vertical baffle is fixedly connected to the transverse baffle; the transverse baffle is provided with a funnel-shaped air inlet hole, and the larger opening of the funnel-shaped air inlet hole faces downward; the vertical baffle has an inclined surface relative to the vertical direction, and the inclined surface is relative to the hydrogen inlet pipe.

[0214] In some embodiments of the present invention, a rock pyrolysis diversion detection device further includes:

[0215] The temperature measuring device is arranged on the side wall of the injection rod.

[0216] In some embodiments of the present invention, a rock pyrolysis diversion detection device further includes:

[0217] The carrier gas inlet pipe is arranged at the lower part of the sample injection mechanism and is communicated with the sample injection mechanism.

[0218] In some embodiments of the present invention, a first flow controller is provided at the inlet of the carrier gas inlet pipe.

[0219] In some embodiments of the present invention, the first sample carrier gas outlet is provided with a second flow controller.

[0220] In some embodiments of the present invention, the upper diversion pipe is transversely connected to the air inlet pipe, and the air inlet pipe is provided with a third flow controller.

[0221] In some embodiments of the present invention, a fourth flow controller is provided on the hydrogen inlet pipe.

[0222] In some embodiments of the present invention, the lower portion of the lower shunt pipe is transversely connected to the first sample carrier gas outlet pipe; the upper portion of the lower shunt pipe is transversely connected to the hydrogen inlet pipe.

[0223] The various embodiments in this specification are described in a progressive manner. Similar portions between the various embodiments can be referenced to each other. Each embodiment focuses on the differences between the other embodiments. In particular, the hardware + program embodiments are generally similar to the method embodiments, so their description is relatively simple. For relevant portions, refer to the description of the method embodiments.

[0224] The foregoing description of this specification describes specific embodiments. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recited in the claims can be performed in an order different from that described in the embodiments and still achieve the desired results. Furthermore, the processes depicted in the accompanying drawings do not necessarily require the specific order shown or the sequential order to achieve the desired results. In certain embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0225] Although the present application provides method operation steps such as embodiments or flowcharts, more or fewer operation steps may be included based on conventional or non-creative work. The order of steps listed in the embodiments is only one way of executing the steps among many steps and does not represent the only execution order. When an actual device or client product is executed, it can be executed in the order shown in the embodiments or the drawings or in parallel (for example, in a parallel processor or multi-threaded processing environment).

[0226] For the convenience of description, the above devices are described in terms of functions divided into various modules. Of course, when implementing the embodiments of this specification, the functions of each module can be implemented in the same or multiple software and / or hardware, or the modules that implement the same function can be implemented by a combination of multiple sub-modules or sub-units, etc. The device embodiments described above are merely schematic. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0227] Those skilled in the art will also appreciate that, in addition to implementing the controller in pure computer-readable program code, it is entirely possible to implement the same functionality by logically programming the method steps in the form of logic gates, switches, application-specific integrated circuits, programmable logic controllers, embedded microcontrollers, and the like. Therefore, such a controller can be considered a hardware component, and the devices included therein for implementing various functions can also be considered structures within the hardware component. Alternatively, the devices for implementing various functions can be considered both software modules implementing the method and structures within the hardware component.

[0228] In a typical configuration, a computing device includes one or more processors (CPUs), input / output interfaces, network interfaces, and memory.

[0229] Memory may include non-permanent storage in a computer-readable medium, random access memory (RAM) and / or non-volatile memory in the form of read-only memory (ROM) or flash RAM. Memory is an example of a computer-readable medium.

[0230] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between the various embodiments can be referenced across them. Each embodiment focuses on the differences from the other embodiments. In particular, since the system embodiments are generally similar to the method embodiments, their description is relatively simple. For relevant parts, reference can be made to the description of the method embodiments. Throughout this specification, reference to the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the embodiments in this specification. In this specification, the schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, those skilled in the art may combine and integrate the different embodiments or examples, and features of different embodiments or examples, described in this specification, without conflict.

[0231] The above description is merely an example of the embodiments of this specification and is not intended to limit the embodiments of this specification. For those skilled in the art, various modifications and variations of the embodiments of this specification are possible. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of this specification shall be included within the scope of the claims of the embodiments of this specification.

Claims

1. A rock pyrolysis diversion detection device, characterized in that: include: Injection mechanism, diversion mechanism and back diffusion prevention mechanism, wherein: The sample feeding mechanism includes a heat preservation furnace, a sample feeding rod and a crucible. The lower end of the heat preservation furnace is connected to the crucible, and the lower end of the crucible is connected to the sample feeding rod. The crucible is used to carry rock samples. The diverter mechanism is connected to the sample injection mechanism and is arranged on the upper part of the sample injection mechanism; the diverter mechanism includes: a lower diverter pipe, a middle diverter pipe and an upper diverter pipe connected in sequence from bottom to top, the lower diverter pipe is connected to the first sample carrier gas outlet pipe, the middle diverter pipe is connected to the hydrogen inlet pipe, and the top of the upper diverter pipe is connected to the second sample carrier gas outlet; The anti-backward diffusion mechanism is arranged inside the lower diversion pipe, and includes: a vertical baffle and a transverse baffle; the vertical baffle is fixedly connected to the transverse baffle; the transverse baffle is provided with a funnel-shaped air inlet hole, and the larger opening of the funnel-shaped air inlet hole faces downward; the vertical baffle has an inclined surface relative to the vertical direction, and the inclined surface is relative to the hydrogen inlet pipe.

2. The rock pyrolysis diversion detection device according to claim 1 is characterized in that: Also includes: The temperature measuring device is arranged on the side wall of the injection rod.

3. The rock pyrolysis diversion detection device according to claim 1, characterized in that: Also includes: The carrier gas inlet pipe is arranged at the lower part of the sample injection mechanism and is communicated with the sample injection mechanism.

4. The rock pyrolysis diversion detection device according to claim 3 is characterized in that: A first flow controller is provided at the inlet of the carrier gas inlet pipe.

5. The rock pyrolysis diversion detection device according to claim 1, characterized in that: The first sample carrier gas outlet is provided with a second flow controller.

6. The rock pyrolysis diversion detection device according to claim 1, characterized in that: The upper diversion pipe is laterally connected to the air inlet pipe, and the air inlet pipe is provided with a third flow controller.

7. The rock pyrolysis diversion detection device according to claim 1, characterized in that: The hydrogen inlet pipe is provided with a fourth flow controller.

8. The rock pyrolysis diversion detection device according to claim 1, characterized in that: The lower portion of the lower diverter pipe is laterally connected to the first sample carrier gas outlet pipe; The upper portion of the lower diverter pipe is horizontally connected to the hydrogen inlet pipe.

9. A rock pyrolysis diversion detection method applied to the rock pyrolysis diversion detection device according to claim 1, characterized in that: include: Heating a rock sample in a crucible to generate gas; opening the first flow controller to allow the helium to carry away the gas and enter the diversion mechanism; Open the second flow controller to release hydrogen into the middle diverter pipe; The third flow controller is turned on to oxidize the gas.

10. The rock pyrolysis diversion detection method according to claim 9, characterized in that: Also includes: Calculate the organic carbon content of the gas at the outlet of the second sample carrier gas.

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