Rock crushing device and method for determining light hydrocarbon sample

Abstract

The invention discloses a rock crushing device and method for light hydrocarbon sample determination. The rock crushing device comprises a box body, a rock sample bin, a cutting bin and a crushing bin are arranged in the box body, a box cover is installed at the top of the rock sample bin, a through groove is formed in the bottom of the rock sample bin, and a flow guide plate is installed in the through groove; the cutting assembly is mounted in the cutting bin; the vacuum system is communicated with the crushing bin; the liquid nitrogen tank is communicated with the crushing bin; the crushing mechanism is mounted in the crushing bin; the filtering assembly is arranged below the crushing mechanism; the conveying assembly is mounted at the bottom of the box body; the packaging assembly is mounted on the through hole; weighing modules are respectively mounted on the guide plate and the conveying assembly; and a thermometer and a barometer are mounted in the crushing bin. By adopting a low-temperature crushing technology, the problem of gas dissipation of the light hydrocarbon sample in the crushing process is effectively avoided, and the integrity and accuracy of sample components are ensured.

Description

Technical Field

[0001] The 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 the origin and resource potential of oil and gas, especially for the rapid identification, analysis and research of hydrocarbon components in gas hydrate decomposition gas and sediments in hydrate storage areas. The analysis and research of light hydrocarbon components are of great significance for tracing the origin of gas hydrates and clarifying their temporal and spatial distribution.

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

[0004] 1) The rock crushing process is complicated and usually requires multiple steps to be completed in coordination. First, a hammer is used to initially knock and crush large rock samples, and then the initially crushed small samples are further ground and refined with the help of a mortar. The whole process is cumbersome, time-consuming, inefficient, and requires the cooperation of multiple instruments, which wastes manpower. In addition, due to the long sample crushing time, it is difficult to meet the needs of shipboard laboratories or field drilling sites for efficient and immediate operations, which seriously limits its application scenarios.

[0005] 2) The sample crushing process is mostly in an open system. Light hydrocarbon molecules are simple in structure, relatively small in size, have short carbon chains, and weak intermolecular van der Waals forces. Compared with heavy hydrocarbons with long carbon chains, they are easier to separate from solid or liquid sample systems. In the process of rock sample processing, operations such as cutting and crushing will destroy the original structure of the rock, open up more pore channels, and create favorable conditions for the escape of light hydrocarbons. If not effectively controlled, light hydrocarbons will be lost in large quantities, which will affect the integrity of the sample components, reduce the accuracy of the analysis results, and interfere with subsequent scientific research and analytical judgment of rock samples.

[0006] 3) The crushed powder sample is kept in an open state before being transferred to the next step. Changes in ambient temperature will intensify the escape of light hydrocarbons, especially in a high temperature environment, where the activity of light hydrocarbon molecules is enhanced and it is easier to escape from the sample. At the same time, pollutants such as dust, impurities, and microorganisms in the air can easily mix into the sample, causing the sample to be contaminated. This not only changes the physical composition of the sample, but may also introduce new chemicals, greatly interfering with the subsequent analysis and test results, resulting in the inability to truly restore the original characteristics of the rock sample.

[0007] 4) Existing rock crushing methods lack an effective quantitative control mechanism and cannot accurately crush rocks according to the predetermined quality or particle size requirements. In actual operation, there is often too much sample waste due to excessive sample crushing, or insufficient sample crushing to meet the needs of subsequent experiments or research. This not only increases the cost of the experiment, but also delays the scientific research process and production progress, seriously restricting 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 which can be used for light hydrocarbon sample determination, so as to solve the problems existing in the prior art.

[0010] To achieve the above 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, wherein a rock sample chamber, a cutting chamber and a crushing chamber are arranged in the box body, 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 with the crushing chamber, and a guide plate is installed in the through slot;

[0012] A cutting assembly, wherein the cutting assembly is installed in the cutting chamber, and the cutting chamber is communicated with the rock sample chamber;

[0013] A vacuum system, the vacuum system being in communication with the crushing bin;

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

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

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

[0017] A conveying assembly, wherein the conveying assembly is mounted at 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 filtering assembly;

[0018] A packaging component, the packaging component is 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 sections. A vertical partition is vertically fixedly connected to the top surface of the horizontal partition, and the vertical partition divides the upper section into the rock sample chamber and the cutting chamber. The crushing chamber is located below the horizontal partition.

[0021] The through groove is formed on the horizontal partition plate, and a clearance groove is formed on the vertical partition plate, and the clearance groove 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, and the linear motor 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 that can be used for light hydrocarbon sample determination provided by the present invention, 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 bin, 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 that can be used for light hydrocarbon sample determination provided by the present invention, the crushing mechanism includes a double-roll crusher and a grinder, the double-roll crusher and the grinder are both installed in the crushing bin, and the feed port of the double-roll crusher is arranged corresponding to the through groove, 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 component.

[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, the capping device is installed on the through opening, and the capping device is arranged corresponding to the containing container.

[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, observe the barometer, and 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, and the cut gravel enters the crushing mechanism through the guide plate, and the sample is crushed and ground by the crushing mechanism;

[0032] Step 4: filtering the ground sample through a filtering component, and the filtered sample enters a container;

[0033] Step five, the container is transported by the conveying component, and when the container reaches the through-port portion, the through-port is opened, and the container is packaged by the packaging component, and finally output from 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 is still retained in the sample to the greatest extent, ensuring the integrity and accuracy of the sample components.

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

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

[0038] 4. Through the setting of the packaging component, the sample can be automatically sealed after sampling, avoiding the problem of broken sample contamination, and facilitating the storage and transportation of the sample.

[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 drawings required for use in the embodiments will be briefly introduced below. 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 creative work.

[0041] Figure 1It is a schematic diagram of the structure of the rock crushing device of the present invention that can be used for light hydrocarbon sample determination;

[0042] Figure 2 The figure is a flow chart 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 be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in 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. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work 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] A box body 1 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, and the through slot is connected with the crushing chamber 4. A guide plate 6 is installed in the through slot;

[0048] A cutting assembly, which 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 bin 4;

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

[0051] A crushing mechanism, which is installed in the crushing bin 4 and is arranged corresponding to the through slot;

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

[0053] The conveying assembly is installed at the bottom of the box body 1. A through hole 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 hole. The container 8 is placed on the conveying assembly and is arranged corresponding to the filtering assembly.

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

[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] Further optimization scheme, a horizontal partition is fixedly connected in the box body 1, and the horizontal partition is divided into two upper and lower sections in the box body 1. A vertical partition is vertically fixedly connected to the top surface of the horizontal partition, and the vertical partition divides the upper section into a rock sample chamber 2 and a cutting chamber 3. The crushing chamber 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 that its angle is adjustable. Specifically, the guide plate 6 can be installed by a rotating shaft, and the rotation of the rotating shaft is controlled by a motor to adjust the angle of the guide plate 6, so that the sample flow direction can be controlled. The guide plate is opened during the liquid nitrogen perfusion process to ensure that the temperature of the three chambers is balanced.

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

[0060] In a further optimized solution, the cutting assembly includes 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 a clearance groove. The linear motor cooperates with the saw blade cutter 12 to cut the rock sample while feeding linearly.

[0061] A further optimized solution is that 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 that the pulverizing mechanism includes a double-roll crusher 15 and a grinder 16, both of which are installed in the pulverizing 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, 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 filtering assembly includes a funnel 18 , the funnel 18 is fixed in the housing 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 conveying belt 21, which is installed at the bottom of the box body 1, and one end of the conveying 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 containing 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, and 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-stage type. The first group 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 in 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;

[0070] Step 3: Open the cutting assembly to perform preliminary cutting on the rock sample, and the cut gravel enters the crushing mechanism through the guide plate 6, and the sample is crushed and ground by the crushing mechanism;

[0071] Step 4, filtering the ground sample through the filtering component, and the filtered sample enters the container 8;

[0072] Step five, the container 8 is transported by the transport component. When the container 8 reaches the through opening, the through opening is opened. The container 8 is packaged by 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", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0074] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined 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 arranged in the box body (1), a box cover (5) is installed on the top of the rock sample chamber (2), a through groove is opened at the bottom of the rock sample chamber (2), the through groove is connected with the crushing chamber (4), and a guide plate (6) is installed in the through groove; 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 bin (4); A liquid nitrogen tank (7), wherein the liquid nitrogen tank (7) is 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, wherein the filter assembly is arranged below the pulverizing mechanism; A conveying assembly, the conveying assembly being mounted at 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, the packaging component is 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).

2. A rock crushing device for light hydrocarbon sample determination according to claim 1, characterized in that: A horizontal partition is fixedly connected inside the box (1), the horizontal partition divides the box (1) into two upper and lower sections, a vertical partition is vertically fixedly connected to the top surface of the horizontal partition, the vertical partition divides the upper section into the rock sample chamber (2) and the cutting chamber (3), and the crushing chamber (4) is located below the horizontal partition; The through groove is provided on the horizontal partition plate, and the make way groove is provided on the vertical partition plate, and the make way groove is arranged corresponding to the cutting assembly.

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

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

5. A 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); the double-roll crusher (15) and the grinder (16) are both installed in the pulverizing bin (4); the feed port of the double-roll crusher is arranged corresponding to the through slot; the grinder (16) is located below the double-roll crusher (15); the input end of the grinder (16) is arranged corresponding 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 corresponding to the filter assembly.

6. A 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).

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

8. A rock crushing device for light hydrocarbon sample determination according to claim 1, characterized in that: The packaging assembly comprises a capping device (22), the capping device (22) is installed on the through opening, and the capping device (22) is arranged corresponding to the containing container (8).

9. 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 8, 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, opening 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 sample is crushed and ground by the crushing mechanism; Step 4, filtering the ground sample through a filtering component, and the filtered sample enters a container (8); Step five, the container (8) is transported by the transport component, the opening is opened when the container (8) reaches the opening, the container (8) is packaged by the packaging component, and finally outputted from the box body (1).

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