A rock crushing device and method for light hydrocarbon sample determination

Abstract

The present invention discloses a rock crushing device and method that can be used for light hydrocarbon sample determination. The device comprises: a housing, wherein a rock sample chamber, a cutting chamber, and a crushing chamber are disposed within the housing; a housing cover is mounted on the top of the rock sample chamber; a through slot is formed at the bottom of the rock sample chamber, and a guide plate is mounted within the through slot; a cutting assembly is mounted within the cutting chamber; a vacuum system is connected to the crushing chamber; a liquid nitrogen tank is connected to the crushing chamber; a crushing mechanism is mounted within the crushing chamber; a filter assembly is disposed below the crushing mechanism; a conveying assembly is mounted on the bottom of the housing; a packaging assembly is mounted on the through port; weighing modules are mounted on the guide plate and the conveying assembly, respectively; and a thermometer and a barometer are mounted within the crushing chamber. The present invention utilizes low-temperature crushing technology to effectively avoid gas leakage during the crushing process of light hydrocarbon samples, thereby ensuring the integrity and accuracy of sample composition.

Description

Technical Field

[0001] The present invention relates to the technical field of oil and gas exploration and development, and in particular to a rock crushing device and method that can be used for light hydrocarbon sample determination. Background Art

[0002] In the field of oil and gas exploration and research, light hydrocarbon components are crucial for evaluating oil and gas genesis and resource potential, especially for the rapid identification and analysis of hydrocarbon components in gas hydrate decomposition gases and sediments in hydrate-bearing areas. The analysis and study of light hydrocarbon components is crucial for tracing the genesis of gas hydrates and clarifying their spatial and temporal distribution.

[0003] The current rock crushing device has the following technical problems:

[0004] 1) Rock crushing is a complex process, typically requiring multiple coordinated steps. Large rock samples are initially crushed with hammers, and then further ground into smaller pieces using a mortar. The entire process is cumbersome, time-consuming, and inefficient, requiring multiple instruments and wasting manpower. Furthermore, the lengthy sample crushing process makes it difficult to meet the demands of efficient, immediate operations in shipboard laboratories or at field drilling sites, severely limiting its application scenarios.

[0005] 2) The sample crushing process often occurs in an open system. Light hydrocarbon molecules, due to their simpler structure, relatively small size, shorter carbon chains, and weaker intermolecular van der Waals forces, are more easily released from solid or liquid sample systems than heavier hydrocarbons with longer carbon chains. During rock sample processing, operations such as cutting and crushing disrupt the rock's original structure, opening up more porous channels and creating favorable conditions for the escape of light hydrocarbons. If not effectively controlled, these light hydrocarbons will be lost in large quantities, compromising the integrity of the sample composition, reducing the accuracy of analytical results, and interfering with subsequent scientific research and analytical interpretation of the rock samples.

[0006] 3) The crushed powder sample is kept open before proceeding to the next step. Changes in ambient temperature can exacerbate the escape of light hydrocarbons, especially at higher temperatures, where light hydrocarbon molecules become more active and more likely to escape from the sample. At the same time, pollutants such as dust, impurities, and microorganisms in the air can easily enter the sample, contaminating it. This not only alters the sample's physical composition but also introduces new chemicals, significantly interfering with subsequent analytical results and making it impossible to truly restore the original properties of the rock sample.

[0007] 4) Existing rock crushing methods lack effective quantitative control mechanisms, making it impossible to accurately crush rocks to meet predetermined quality or particle size requirements. In practice, excessive sample crushing often results in wasted samples, or insufficient sample crushing to meet subsequent experimental or research needs. This not only increases experimental costs but also delays scientific research and production progress, severely limiting the quality and efficiency of related research and analytical testing.

[0008] Based on the above technical problems, the present invention provides a rock crushing device and method that can be used for light hydrocarbon sample determination. Summary of the Invention

[0009] The purpose of the present invention is to provide a rock crushing device and method that can be used for light hydrocarbon sample determination, so as to solve the problems existing in the prior art.

[0010] To achieve the above-mentioned object, the present invention provides the following solution: The present invention provides a rock crushing device that can be used for light hydrocarbon sample determination, comprising:

[0011] A box body is provided with a rock sample chamber, a cutting chamber and a crushing chamber. A box cover is installed on the top of the rock sample chamber. A through slot is opened at the bottom of the rock sample chamber, the through slot is connected to the crushing chamber, and a guide plate is installed in the through slot;

[0012] a cutting assembly, the cutting assembly being installed in the cutting chamber, the cutting chamber being in communication with the rock sample chamber;

[0013] a vacuum system, the vacuum system being in communication with the crushing chamber;

[0014] a liquid nitrogen tank, the liquid nitrogen tank being in communication with the crushing bin;

[0015] A crushing mechanism, the crushing mechanism being installed in the crushing bin and arranged corresponding to the through slot;

[0016] A filter assembly, the filter assembly being arranged below the pulverizing mechanism;

[0017] A conveying assembly is mounted on the bottom of the box body. A through opening is provided on the side of the box body. One end of the conveying assembly extends out of the box body through the through opening. A container is placed on the conveying assembly and is arranged corresponding to the filter assembly.

[0018] a packaging component mounted on the through port;

[0019] Wherein, weighing modules are respectively installed on the guide plate and the conveying assembly, and a thermometer and a barometer are installed in the crushing bin.

[0020] According to the rock crushing device for light hydrocarbon sample determination provided by the present invention, a horizontal partition is fixedly connected to the box body, and the horizontal partition divides the box body into two upper and lower compartments. A vertical partition is fixedly connected to the top surface of the horizontal partition, and the vertical partition divides the upper compartment into the rock sample compartment and the cutting compartment. The crushing compartment is located below the horizontal partition.

[0021] The through slot is provided on the horizontal partition, and a clearance slot is provided on the vertical partition. The clearance slot is arranged corresponding to the cutting assembly.

[0022] According to the rock crushing device that can be used for light hydrocarbon sample determination provided by the present invention, the cutting assembly includes a linear motor, which is installed in the cutting chamber. A saw blade cutter is installed on the linear motor, and the saw blade cutter enters the rock sample chamber through the clearance groove.

[0023] According to the rock crushing device provided by the present invention and which can be used for the determination of light hydrocarbon samples, the vacuum system includes a vacuum pump, which is installed on the outer wall of the box body, one end of the vacuum pump is connected to the crushing chamber, and the other end of the vacuum pump is fixedly connected to a sampling tube, which is located outside the box body.

[0024] According to the rock crushing device provided by the present invention and which can be used for the determination of light hydrocarbon samples, the crushing mechanism includes a double-roll crusher and a grinder, both of which are installed in the crushing bin, and the feed port of the double-roll crusher is arranged corresponding to the through slot, and the grinder is located below the double-roll crusher; and the input end of the grinder is arranged corresponding to the output end of the double-roll crusher, a baffle is installed on the output port of the grinder, and the output port of the grinder is arranged corresponding to the filter assembly.

[0025] According to the rock crushing device for light hydrocarbon sample determination provided by the present invention, the filtering component includes a funnel, the funnel is fixed in the box, a filter screen is installed on the top of the funnel, and a vibrator is installed on the funnel.

[0026] According to the rock crushing device for light hydrocarbon sample determination provided by the present invention, the conveying assembly includes a conveyor belt, which is installed at the bottom of the box body, and one end of the conveyor belt extends out of the box body through the through opening.

[0027] According to the rock crushing device that can be used for light hydrocarbon sample determination provided by the present invention, the packaging component includes a capping device, which is installed on the through opening and is arranged corresponding to the containing vessel.

[0028] A rock crushing method for light hydrocarbon sample determination comprises the following steps:

[0029] Step 1: Place the rock sample into the rock sample chamber and close the cover;

[0030] Step 2: Open the liquid nitrogen tank and stop when the temperature inside the box reaches -50°C. Open the vacuum system and observe the barometer. When the pressure inside the box is close to vacuum, turn off the vacuum pump.

[0031] Step 3: Open the cutting assembly to perform preliminary cutting on the rock sample. The cut gravel enters the crushing mechanism through the guide plate, and the crushing mechanism crushes and grinds the sample;

[0032] Step 4: Filter the ground sample through the filter assembly, and the filtered sample enters the container;

[0033] Step 5: The container is transported by the transport component. When the container reaches the opening, the opening is opened. The container is packaged by the packaging component and finally output to the box.

[0034] The present invention discloses the following technical effects:

[0035] 1. The present invention adopts low-temperature crushing technology, which effectively avoids the gas escape problem of light hydrocarbon samples during the crushing process, so that the gas remains in the sample to the greatest extent, ensuring the integrity and accuracy of the sample components.

[0036] 2. The rock samples are processed by cooperating with the cutting assembly and the crushing mechanism, which realizes efficient crushing of the samples, improves work efficiency and shortens processing time.

[0037] 3. The setting of two sets of weighing modules can accurately control the sample output and avoid sample waste.

[0038] 4. The packaging component can be set up to automatically seal the sample after it is taken out, avoiding the problem of contamination by broken samples and facilitating the storage and transportation of samples.

[0039] 5. The setting of the vacuum system can collect and detect the gas collected during the sample crushing process, which is helpful for comprehensive analysis and evaluation of the characteristics of the sample and improves the reliability and scientificity of the experimental data. 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. Obviously, the drawings described below are only 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 1This is a schematic structural diagram of a rock crushing device that can be used for light hydrocarbon sample determination according to the present invention;

[0042] Figure 2 Flowchart of the rock crushing method of the present invention.

[0043] Among them, 1. Box body; 2. Rock sample chamber; 3. Cutting chamber; 4. Crushing chamber; 5. Box cover; 6. Guide plate; 7. Liquid nitrogen tank; 8. Container; 9. Weighing module; 10. Thermometer; 11. Barometer; 12. Saw blade cutter; 13. Vacuum pump; 14. Sampling tube; 15. Double-roll crusher; 16. Grinder; 17. Baffle; 18. Funnel; 19. Filter; 20. Vibrator; 21. Conveyor belt; 22. Capping machine. DETAILED DESCRIPTION

[0044] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0045] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0046] Reference Figure 1 The present invention provides a rock crushing device that can be used for light hydrocarbon sample determination, comprising:

[0047] Box body 1, which is provided with a rock sample chamber 2, a cutting chamber 3 and a crushing chamber 4. A box cover 5 is installed on the top of the rock sample chamber 2. A through slot is opened at the bottom of the rock sample chamber 2, which is connected to the crushing chamber 4. A guide plate 6 is installed in the through slot;

[0048] The cutting assembly is installed in the cutting chamber 3, and the cutting chamber 3 is connected to the rock sample chamber 2;

[0049] A vacuum system, the vacuum system is connected to the crushing chamber 4;

[0050] Liquid nitrogen tank 7, liquid nitrogen tank 7 is connected to crushing bin 4;

[0051] The crushing mechanism is installed in the crushing chamber 4 and is arranged corresponding to the through slot;

[0052] A filter assembly is provided below the crushing mechanism;

[0053] The conveying assembly is installed at the bottom of the box body 1. A through opening is opened on the side of the box body 1. One end of the conveying assembly extends out of the box body 1 through the through opening. The container 8 is placed on the conveying assembly and is arranged corresponding to the filtering assembly.

[0054] A packaging component is mounted on the through port;

[0055] The guide plate 6 and the conveying assembly are respectively provided with weighing modules 9, and the crushing bin 4 is provided with a thermometer 10 and a barometer 11. The weighing module 9 adopts the existing technology.

[0056] A further optimized solution is that a horizontal partition is fixedly connected to the box body 1, which divides the box body 1 into two upper and lower compartments. A vertical partition is fixedly connected to the top surface of the horizontal partition, which divides the upper compartment into a rock sample compartment 2 and a cutting compartment 3. The crushing compartment 4 is located below the horizontal partition.

[0057] In this embodiment, a sealing lock is provided between the box body 1 and the box cover 5. The sealing lock adopts the existing technology. The specific type is selected according to actual needs and is not specifically limited in this embodiment.

[0058] The guide plate 6 is electrically controlled to ensure its angle is adjustable. Specifically, the guide plate 6 is mounted on a shaft, which is rotated by a motor to adjust the angle of the guide plate 6, thereby enabling the sample flow direction to be controlled. The guide plate is opened during liquid nitrogen perfusion to ensure temperature balance among the three chambers.

[0059] A through slot is provided on the horizontal partition, and a clearance slot is provided on the vertical partition, and the clearance slot is arranged corresponding to the cutting assembly.

[0060] In a further optimized solution, the cutting assembly includes a linear motor installed in the cutting chamber 3. A saw blade cutter 12 is installed on the linear motor. The saw blade cutter 12 enters the rock sample chamber 2 through a clearance slot. The linear motor and the saw blade cutter 12 can cut the rock sample while feeding linearly.

[0061] To further optimize the solution, the vacuum system includes a vacuum pump 13, which is installed on the outer wall of the box body 1. One end of the vacuum pump 13 is connected to the crushing bin 4, and the other end of the vacuum pump 13 is fixedly connected to a sampling tube 14, which is located outside the box body 1.

[0062] A further optimized solution is provided, in which the crushing mechanism includes a double-roll crusher 15 and a grinder 16. Both the double-roll crusher 15 and the grinder 16 are installed in the crushing bin 4, and the feed port of the double-roll crusher is arranged corresponding to the through slot, and the grinder 16 is located below the double-roll crusher 15; and the input end of the grinder 16 is arranged corresponding to the output end of the double-roll crusher 15, and a baffle 17 is installed on the output port of the grinder 16, and the output port of the grinder 16 is arranged corresponding to the filter component.

[0063] According to a further optimized solution, the filter assembly includes a funnel 18 , which is fixed in the box body 1 , a filter screen 19 is installed on the top of the funnel 18 , and a vibrator 20 is installed on the funnel 18 .

[0064] According to a further optimized solution, the conveying assembly includes a conveyor belt 21 , which is installed at the bottom of the box body 1 , and one end of the conveyor belt 21 extends out of the box body 1 through a through opening.

[0065] According to a further optimized solution, the packaging assembly includes a capping device 22 , which is installed on the through opening and is arranged corresponding to the container 8 .

[0066] In this embodiment, a channel is provided at the opening portion, and the channel size is set according to the size of the container 8. Electrically or hydraulically controlled closed doors are respectively provided at both ends of the channel. The capping device 22 is installed at the top of the channel. After the container 8 reaches the first closed door of the channel, the first closed door is opened, and the conveyor belt 21 works to drive the container 8 into the channel. Then the closed door is closed. After the capping is completed, another closed door is opened and the container flows out. At the same time, in order to ensure the sealing of the device, the conveyor belt 21 can be set to a two-section type. The first set of closed doors is located between the two sections of the conveyor belt 21, and a vertical control method (such as a gate) is used to drive the closed door to open and close.

[0067] A rock crushing method for light hydrocarbon sample determination comprises the following steps:

[0068] Step 1: Place the rock sample into the rock sample chamber 2 and close the chamber cover 5;

[0069] Step 2: Open the liquid nitrogen tank 7 and stop when the temperature inside the box 1 reaches -50°C. Open the vacuum system and observe the barometer 11. When the pressure inside the box 1 is close to vacuum, turn off the vacuum pump 13.

[0070] Step 3: Open the cutting assembly to perform preliminary cutting on the rock sample. The cut gravel enters the crushing mechanism through the guide plate 6, and the crushing mechanism crushes and grinds the sample;

[0071] Step 4: Filter the ground sample through the filter assembly, and the filtered sample enters the container 8;

[0072] Step five: transport the container 8 through the transport component. When the container 8 reaches the opening, the opening is opened. The container 8 is packaged through the packaging component and finally output from the box body 1.

[0073] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0074] The embodiments described above are merely descriptions of preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by persons skilled in the art should fall within the scope of protection defined by the claims of the present invention.

Claims

1. A rock crushing device that can be used for light hydrocarbon sample determination, characterized in that: include: A box body (1), wherein a rock sample chamber (2), a cutting chamber (3) and a crushing chamber (4) are provided in the box body (1); a box cover (5) is installed on the top of the rock sample chamber (2); a through slot is opened at the bottom of the rock sample chamber (2); the through slot is connected to the crushing chamber (4); a guide plate (6) is installed in the through slot; A cutting assembly, the cutting assembly being installed in the cutting chamber (3), the cutting chamber (3) being in communication with the rock sample chamber (2); A vacuum system, the vacuum system being in communication with the crushing chamber (4); A liquid nitrogen tank (7), the liquid nitrogen tank (7) being in communication with the crushing bin (4); A crushing mechanism, the crushing mechanism being installed in the crushing bin (4) and arranged corresponding to the through slot; A filter assembly, the filter assembly being arranged below the pulverizing mechanism; A conveying assembly, the conveying assembly being mounted on the bottom of the box body (1), a through opening being provided on the side of the box body (1), one end of the conveying assembly extending out of the box body (1) through the through opening, a container (8) being placed on the conveying assembly and being arranged corresponding to the filtering assembly; a packaging component mounted on the through port; Wherein, weighing modules (9) are respectively installed on the guide plate (6) and the conveying assembly, and a thermometer (10) and a barometer (11) are installed in the crushing bin (4); A horizontal partition is fixedly connected to the box body (1), and the horizontal partition divides the box body (1) into two upper and lower sections. A vertical partition is fixedly connected to the top surface of the horizontal partition, and the vertical partition divides the upper section into the rock sample chamber (2) and the cutting chamber (3). The crushing chamber (4) is located below the horizontal partition. The horizontal partition is provided with the through slot, and the vertical partition is provided with a clearance slot, and the clearance slot is arranged corresponding to the cutting assembly; the packaging assembly includes a capping device (22), and the capping device (22) is installed on the through port, and the capping device (22) is arranged corresponding to the containing container (8).

2. A rock crushing device for light hydrocarbon sample determination according to claim 1, characterized in that: The cutting assembly comprises a linear motor, which is installed in the cutting chamber (3). A saw blade cutter (12) is installed on the linear motor, and the saw blade cutter (12) enters the rock sample chamber (2) through the clearance groove.

3. The rock crushing device for light hydrocarbon sample determination according to claim 1, characterized in that: The pulverizing mechanism comprises a double-roll crusher (15) and a grinder (16), wherein the double-roll crusher (15) and the grinder (16) are both installed in the pulverizing bin (4), and the feed port of the double-roll crusher is arranged correspondingly to the through slot, and the grinder (16) is located below the double-roll crusher (15); and the input end of the grinder (16) is arranged correspondingly to the output end of the double-roll crusher (15), a baffle (17) is installed on the output port of the grinder (16), and the output port of the grinder (16) is arranged correspondingly to the filter assembly.

4. The rock crushing device for light hydrocarbon sample determination according to claim 1, characterized in that: The vacuum system comprises a vacuum pump (13), which is mounted on the outer wall of the box (1), one end of the vacuum pump (13) is connected to the crushing chamber (4), and the other end of the vacuum pump (13) is fixedly connected to a sampling tube (14), which is located outside the box (1).

5. The rock crushing device for light hydrocarbon sample determination according to claim 1, characterized in that: The filter assembly comprises a funnel (18), the funnel (18) is fixed in the box (1), a filter screen (19) is installed on the top of the funnel (18), and a vibrator (20) is installed on the funnel (18).

6. The rock crushing device for light hydrocarbon sample determination according to claim 1, characterized in that: The conveying assembly comprises a conveying belt (21), the conveying belt (21) being installed at the bottom of the box body (1), and one end of the conveying belt (21) extending out of the box body (1) through the through opening.

7. A rock crushing method for light hydrocarbon sample determination, based on the rock crushing device for light hydrocarbon sample determination according to any one of claims 1 to 6, characterized in that: The steps include: Step 1: Place the rock sample into the rock sample chamber (2) and close the chamber cover (5). Step 2: Open the liquid nitrogen tank (7) and stop when the temperature inside the box (1) reaches -50°C, open the vacuum system, observe the barometer (11), and when the pressure inside the box (1) is close to vacuum, turn off the vacuum pump (13); Step 3: Open the cutting assembly to perform preliminary cutting on the rock sample. The cut gravel enters the crushing mechanism through the guide plate (6), and the crushing mechanism crushes and grinds the sample; Step 4: filtering the ground sample through the filter assembly, and the filtered sample enters the container (8); Step five: transporting the container (8) through the transport component. When the container (8) reaches the opening, the opening is opened. The container (8) is packaged through the packaging component and finally outputted from the box body (1).

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