Container correction device based on rock core test
By using a combination of pressure tank and bleed valve components in core testing, the problem of poor sealing of the container is solved, precise control of core testing is achieved, and the accuracy and practicality of the test is improved.
Patent Information
- Application Number
- CN202420599225.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-26
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-03-26
AI Technical Summary
The poor sealing of existing core test containers leads to poor accuracy and practicality of test data, which cannot effectively ensure the accuracy of core tests.
A container correction device based on core testing is designed, including a pressure tank, a bleed valve assembly and a pressure gauge. The gas is released into the container through the bleed valve assembly and the gas volume is measured by the pressure gauge to ensure that the sealing of the container meets the test requirements. The vent valve assembly consists of a fixed pipe, valve stem, spring, permanent magnet, solenoid and adjustment structure, which can accurately control the gas release amount and simulate the generation of analytical gas.
By accurately controlling the gas release amount, ensuring the sealing of the container, improving the accuracy and practicality of core tests, and meeting the testing requirements.
Smart Images
Figure CN222280628U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of core test auxiliary equipment, and in particular relates to a container calibration device based on core testing. Background Art
[0002] In the process of core research, the core is usually tested. In this process, the analytical gas calculation of the core is involved, and the process is carried out in a sealed container (analysis tank).
[0003] In the prior art, since the core to be analyzed needs to be placed inside the container, the corresponding container also needs to be set to an openable and closable structure, and at the same time, the sealing of the container needs to be ensured, for example, the container body and the top plate are connected by a flange to avoid the overflow of analyzed gas during the core test. In theory, the amount of gas analyzed by the core is equal to the amount of gas overflowed from the container (which usually contains saturated salt water). However, due to the poor sealing of the container, direct core testing will cause the accuracy of the test data to deteriorate and the practicality is poor. Therefore, it is necessary to calibrate the experimental container through an auxiliary device before the core test to ensure that the experimental container meets the test requirements. Utility Model Content
[0004] The embodiment of the utility model provides a container calibration device based on core testing, aiming to calibrate the experimental container before core testing.
[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: to provide a container calibration device based on core testing, comprising a pressure tank with a tank cavity, a venting valve assembly arranged on the pressure tank and connected to the tank cavity, and a pressure gauge arranged on the pressure tank;
[0006] The pressure tank is used to release gas into the container to be tested through the air release valve assembly after being placed in the container to be tested, and the amount of released gas is measured by the change in the value of the pressure gauge.
[0007] In a possible implementation, the deflation valve assembly includes a fixed tube, a valve stem, a spring, a permanent magnet, an electromagnet, and a matching controller;
[0008] The fixed tube is fixed on the pressure tank and communicated with the tank cavity. A top plate is provided at the end of the fixed tube away from the pressure tank. An annular plate is fixed in the tube cavity of the fixed tube. The fixed tube is connected with an inlet and outlet air pipe; the valve stem is slidably arranged in the tube cavity of the fixed tube. One end of the valve stem extends outward through the top plate, and the other end of the valve stem passes through the annular plate. A blocking plate corresponding to the annular plate is provided at the end of the valve stem extending into the tank cavity. An abutment plate is provided on the valve stem, and the abutment plate is located between the top plate and the annular plate; the spring Located between the annular plate and the top plate, and sleeved on the valve stem, one end of the spring abuts against the annular plate, and the other end abuts against the abutting plate, and the spring is used to bounce the valve stem so that the valve stem maintains a tendency to move toward the top plate; the permanent magnet is arranged on the end of the valve stem extending out of the top plate; the electromagnet is fixed on the top plate and arranged corresponding to the permanent magnet, the electromagnet is electrically connected to a power supply, and the electromagnet is used to attract the permanent magnet to move the valve stem toward the tank cavity to release the seal of the sealing plate on the annular plate.
[0009] In a possible implementation, a duckbill valve is detachably connected to the protruding ends of the inlet and outlet air pipes.
[0010] In a possible implementation manner, the electromagnet is provided with a through hole for the valve stem to pass through.
[0011] In a possible implementation, a sliding hole for the valve stem to pass through is provided on the top plate, and a sealing ring sealingly and slidingly connected to the valve stem is provided on the inner wall of the sliding hole.
[0012] In a possible implementation, the deflation valve assembly further includes an adjustment structure, and the adjustment structure includes a screw rod, a limit plate, and an adjustment member;
[0013] There are multiple screw rods, each of which is arranged along the axial direction of the fixed tube, and each of the screw rods is arranged at an annular interval around the axis of the fixed tube on the outside of the fixed tube; the limit plate is arranged between the electromagnet and the permanent magnet, and the limit plate is provided with multiple through holes for each of the screw rods to pass through one by one; there are multiple adjusting members, each of which is arranged corresponding to each of the screw rods, and each of the adjusting members includes two adjusting nuts that are respectively located on both sides of the limit plate and threadedly connected to the corresponding screw rod.
[0014] In a possible implementation, the pressure tank is a cylindrical structure.
[0015] In this implementation, the combination of the pressure tank, the air release valve assembly and the pressure gauge can ensure accurate control of the amount of released gas to simulate the generation of analytical gas, thereby ensuring the calibration of the sealing of the container, ensuring that the container meets the test requirements, and ensuring the accuracy of the core test, which is highly practical. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 A schematic diagram of the use process of the core test container calibration device provided by the embodiment of the utility model; (the dotted line represents the container to be tested)
[0017] Figure 2 for Figure 1 A schematic diagram of the enlarged structure of the A position of the container calibration device for core testing provided in the embodiment;
[0018] Description of reference numerals:
[0019] 10. Pressure tank;
[0020] 20. Air release valve assembly; 21. Fixed tube; 211. Top plate; 212. Ring plate; 22. Valve stem; 221. Sealing plate; 222. Abutment plate; 23. Spring; 24. Permanent magnet; 25. Electromagnet; 26. Inlet and outlet pipes; 27. Duckbill valve; 28. Adjustment structure; 281. Screw; 282. Limit plate; 283. Adjustment member; 30. Pressure gauge. DETAILED DESCRIPTION
[0021] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.
[0022] Please also read Figure 1 and Figure 2 The core testing container calibration device provided by the utility model is now described. The core testing container calibration device comprises a pressure tank 10 having a tank cavity, a venting valve assembly 20 disposed on the pressure tank 10 and connected to the tank cavity, and a pressure gauge 30 disposed on the pressure tank 10. After the pressure tank 10 is placed in the container to be tested, gas is released into the container to be tested through the venting valve assembly 20, and the amount of released gas is measured by the value change of the pressure gauge 30.
[0023] The container calibration device for core testing provided in this embodiment has the following operating principle: first, gas, which may be nitrogen or other inert gas, is filled into the tank cavity through the air vent assembly 20, and the indication of the pressure gauge 30 is observed after the inflation is completed. The pressure tank 10 is then placed in the container, and the ventilation is sealed, and the interior of the container can be filled with saturated brine. The gas pipeline on the container is connected to the gas collection module (which may be a gas collection bottle, using the drainage method). By controlling the abandonment valve assembly, the gas is released inside the container, and at the same time, the gas is led out of the container to the gas collection module. Finally, the gas output is calculated (PV=nRT) by the changes in the front and back indications of the pressure gauge 30, and compared with the amount of gas collected in the gas collection module. If the two are equal, the sealing of the container is good and the container can meet the test requirements.
[0024] Compared with the prior art, the core test container calibration device provided in this embodiment, the combination of the pressure tank 10, the air release valve assembly 20 and the pressure gauge 30 can ensure the precise control of the amount of released gas to simulate the generation of analytical gas, and then ensure the calibration of the sealing of the container, ensure that the container can meet the test requirements, and ensure the accuracy of the core test, and has strong practicality.
[0025] In some embodiments, the above-mentioned deflation valve assembly 20 can be used as follows Figure 2 See the structure shown. Figure 2 The air release valve assembly 20 includes a fixed tube 21, a valve stem 22, a spring 23, a permanent magnet 24, an electromagnet 25 and a matching controller.
[0026] The fixed tube 21 is fixed on the pressure tank 10 and communicated with the tank cavity. A top plate 211 is provided at the end of the fixed tube 21 away from the pressure tank 10. An annular plate 212 is fixed in the tube cavity of the fixed tube 21. The fixed tube 21 is connected to the inlet and outlet air pipes 26. The valve stem 22 is slidably arranged in the tube cavity of the fixed tube 21. One end of the valve stem 22 passes through the top plate 211 and extends outward. The other end of the valve stem 22 passes through the annular plate 212. A blocking plate 221 corresponding to the annular plate 212 is provided at the end of the valve stem 22 extending into the tank cavity. An abutment plate 222 is provided on the valve stem 22. The abutment plate 222 is located between the top plate 211 and the annular plate 212. The spring 23 is located between the annular plate 212 and the top plate 211, and is sleeved on the valve stem 22. One end of the spring 23 abuts against the annular plate 212, and the other end abuts against the abutment plate 222. The spring 23 can bounce the valve stem 22 so that the valve stem 22 maintains a tendency to move toward the top plate 211. The permanent magnet 24 is arranged at the end of the valve stem 22 extending out of the top plate 211. The electromagnet 25 is fixed on the top plate 211 and is arranged corresponding to the permanent magnet 24. The electromagnet 25 is electrically connected to a power source. The electromagnet 25 can attract the permanent magnet 24 to move the valve stem 22 toward the tank cavity to release the seal of the sealing plate 221 on the annular plate 212.
[0027] The fixed tube 21, the valve stem 22 and the spring 23 are combined to form a one-way conduction structure, which can ensure the inflation process of the pressure tank 10, and the gas entering the tank cavity can be blocked, so as to avoid leakage of the gas in the tank cavity, and can better block the gas in the tank cavity. The permanent magnet 24 corresponds to the electromagnet 25, which can ensure that after the electromagnet 25 is energized, the permanent magnet 24 is attracted, and then the valve stem 22 is driven to move toward the tank cavity, and the sealing plate 221 is released from the annular plate 212, so that the gas in the tank cavity can be released through the fixed tube 21 and the inlet and outlet pipes 26.
[0028] The controller may include a power supply and a control module. Specifically, because the controller needs to be located inside the container, a remote controller may be provided to facilitate the staff to control the controller outside the container, mainly controlling the passage and disconnection of the electromagnet 25.
[0029] In addition, the air inlet and outlet pipes 26 may be located between the top plate 211 and the annular plate 212 .
[0030] It should also be noted that a sealing gasket may be provided on the abutting surface between the annular plate 212 and the sealing plate 221 to ensure airtightness after sealing.
[0031] In this embodiment, regarding the inflation process, the gas supply connector can be directly connected to the end of the inlet and outlet pipes 26 , and inflation is performed through the inlet and outlet pipes 26 .
[0032] In some embodiments, the above-mentioned deflation valve assembly 20 can be used as follows Figure 2 See the structure shown. Figure 2 The extended end of the inlet and outlet air pipe 26 is detachably connected with a duckbill valve 27. The duckbill valve 27 can ensure that after the liquid in the container is in the liquid, the liquid in the container is prevented from flowing into the inlet and outlet air pipe 26, thereby preventing the liquid in the container from entering the pressure tank 10, and the structure is simple and practical.
[0033] The connection between the duckbill valve 27 and the air inlet and outlet pipes 26 may be a threaded connection.
[0034] In some embodiments, the electromagnet 25 can be used as follows: Figure 2 See the structure shown. Figure 2 The electromagnet 25 is provided with a through hole for the valve stem 22 to pass through. The provision of the through hole can avoid interference between the valve stem 22 and the electromagnet 25, thereby ensuring that the electromagnet 25 can drive the valve stem 22 to move into the tank cavity during the process of attracting the permanent magnet 24, so as to open the blockage of the annular plate 212 and realize the process of deflation.
[0035] In some embodiments, the top plate 211 may be formed as follows: Figure 2 See the structure shown. Figure 2 The top plate 211 is provided with a sliding hole for the valve stem 22 to pass through, and the inner wall of the sliding hole is provided with a sealing ring that is sealed and slidably connected with the valve stem 22. This structure can ensure the sliding of the valve stem 22, and at the same time can prevent the liquid in the container from leaking in the sliding hole and prevent the liquid from entering the fixed tube 21, and the sealing effect is good.
[0036] In some embodiments, the above-mentioned deflation valve assembly 20 can be used as follows Figure 2 See the structure shown. Figure 2 The deflation valve assembly 20 further includes an adjusting structure 28 , and the adjusting structure 28 includes a screw 281 , a limiting plate 282 and an adjusting member 283 .
[0037] There are multiple screw rods 281, each screw rod 281 is arranged along the axis direction of the fixed tube 21, and each screw rod 281 is arranged at annular intervals around the axis of the fixed tube 21 on the outside of the fixed tube 21. The limit plate 282 is arranged between the electromagnet 25 and the permanent magnet 24, and the limit plate 282 is provided with multiple through holes for each screw rod 281 to pass through. There are multiple adjusting members 283, each adjusting member 283 is arranged in a one-to-one correspondence with each screw rod 281, and each adjusting member 283 includes two adjusting nuts respectively located on both sides of the limit plate 282 and threadedly connected to the corresponding screw rod 281.
[0038] The liquid inside the container is in a full load state, so the release of gas by the vent valve assembly 20 should avoid releasing too quickly to be closer to the simulation of the core desorption process. Therefore, the limit plate 282 can be adjusted by the cooperation of the adjustment member 283 and the screw 281. Because the limit plate 282 is located between the electromagnet 25 and the permanent magnet 24, the limit position of the permanent magnet 24 can be adjusted in the process of the permanent magnet 24 moving close to the electromagnet 25, which can ensure that the distance between the sealing plate 221 and the annular plate 212 is adjusted. By adjusting the opening of the air flow channel, the flow rate of the released gas can be controlled. It has a simple structure, is easy to operate, and is highly practical.
[0039] The limiting plate 282 is provided with a circular hole for the valve stem 22 to pass through.
[0040] In some embodiments, the pressure tank 10 may be Figure 1 See the structure shown. Figure 1 The pressure tank 10 is a cylindrical structure with a simple structure, good pressure resistance and easy manufacturing.
[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A container calibration device based on core testing, characterized in that: It comprises a pressure tank having a tank cavity, a deflation valve assembly arranged on the pressure tank and in communication with the tank cavity, and a pressure gauge arranged on the pressure tank; The pressure tank is used to release gas into the container to be tested through the air release valve assembly after being placed in the container to be tested, and the amount of released gas is measured by the change in the value of the pressure gauge; Wherein, the air release valve assembly includes a fixed tube, a valve stem, a spring, a permanent magnet, an electromagnet and a matching controller; the fixed tube is fixedly mounted on the pressure tank and is connected to the tank cavity, a top plate is provided at the end of the fixed tube away from the pressure tank, an annular plate is fixedly arranged in the tube cavity of the fixed tube, and the fixed tube is connected to an air inlet and outlet pipe; the valve stem is slidably arranged in the tube cavity of the fixed tube, one end of the valve stem passes through the top plate to extend outward, the other end of the valve stem passes through the annular plate, a blocking plate corresponding to the annular plate is provided at the end of the valve stem extending into the tank cavity, and an abutment plate is provided on the valve stem. Located between the top plate and the annular plate; the spring is located between the annular plate and the top plate, and is sleeved on the valve stem, one end of the spring abuts against the annular plate, and the other end abuts against the abutting plate, and the spring is used to bounce the valve stem so that the valve stem maintains a tendency to move toward the top plate; the permanent magnet is arranged at the end of the valve stem extending out of the top plate; the electromagnet is fixed on the top plate and arranged corresponding to the permanent magnet, the electromagnet is electrically connected to a power supply, and the electromagnet is used to attract the permanent magnet to move the valve stem toward the tank cavity to release the seal of the sealing plate on the annular plate.
2. The container calibration device for core testing according to claim 1, characterized in that: A duckbill valve is detachably connected to the extended ends of the inlet and outlet air pipes.
3. The core testing container calibration device according to claim 1, characterized in that: The electromagnet is provided with a through hole for the valve stem to pass through.
4. The core testing container calibration device according to claim 1, characterized in that: The top plate is provided with a sliding hole for the valve stem to pass through, and the inner wall of the sliding hole is provided with a sealing ring which is sealingly and slidably connected with the valve stem.
5. The core testing container calibration device according to claim 1, characterized in that: The air release valve assembly further comprises an adjusting structure, which comprises a screw, a limiting plate and an adjusting member; There are multiple screw rods, each of which is arranged along the axial direction of the fixed tube, and each of the screw rods is arranged at an annular interval around the axis of the fixed tube on the outside of the fixed tube; the limit plate is arranged between the electromagnet and the permanent magnet, and the limit plate is provided with multiple through holes for each of the screw rods to pass through one by one; there are multiple adjusting members, each of which is arranged corresponding to each of the screw rods, and each of the adjusting members includes two adjusting nuts that are respectively located on both sides of the limit plate and threadedly connected to the corresponding screw rod.
6. The core testing container calibration device according to any one of claims 1 to 5, characterized in that: The pressure tank is a cylindrical structure.