Porous medium material permeability measuring device and use method thereof

Abstract

The invention relates to a porous medium material permeability measuring device and a use method thereof.The porous medium material permeability measuring device comprises a plurality of flow cavities and is characterized in that differential pressure sensors used for testing the differential pressure in the flow cavities are arranged above the flow cavities, a pressurizing pipe is arranged on the right side of each flow cavity, and a pressure sensor is arranged on the right side of each pressurizing pipe. The right ends of the multiple pressurizing pipes jointly and fixedly communicate with a transfer cavity, an adjusting structure for adjusting the number of the pressurizing pipes communicating with the transfer cavity is arranged in the transfer cavity, a pressure propeller is arranged on the right side of the transfer cavity, and the transfer cavity communicates with the output end of the pressure propeller through a pressure butt joint pipe. According to the invention, the number of test samples can be adjusted as required, and the permeability of a plurality of porous medium materials can be measured.

Description

Technical Field

[0001] The present invention relates to the field of porous medium materials, in particular to a device for measuring the permeability of a porous medium material and a method for using the same. Background Art

[0002] The structure of the porous liquid storage medium is derived from biological articular cartilage, which can solve the problem of lubrication self-compensation under extreme working conditions. The pore size and porosity of the porous medium material can determine the structure of the porous medium, thereby affecting the permeability. Permeability is a parameter characterizing the seepage ability of a fluid in the connected pores of a porous medium, and is also a parameter characterizing the relationship between the microporous morphological structure, porosity, fluid viscosity coefficient, and seepage velocity. Recent research has shown that the permeability of porous materials is closely related to the mechanical environment and mass transfer conditions of the porous skeleton, and significantly affects the mechanical properties and tribological properties of the porous structure.

[0003] Currently, the existing devices and measurement methods for measuring the permeability of porous medium materials include a flow chamber for placing the porous material, a pressure pusher, a differential pressure sensor, and a host computer control terminal. The pressure pusher and the differential pressure sensor are feedback-controlled through the host computer control terminal to provide two test modes of constant flow rate and constant pressure; however, in the above technology, it is not convenient to measure multiple groups of porous materials, and the measurement quantity cannot be adjusted according to requirements, so improvement is needed. For this reason, we have proposed a device for measuring the permeability of a porous medium material. Summary of the Invention

[0004] The purpose of the present invention is to provide a device for measuring the permeability of a porous medium material and a method for using the same, which can meet the requirement of adjusting the number of test samples according to needs and measuring the permeability of multiple porous medium materials.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A device for measuring the permeability of a porous medium material, including a flow chamber, a plurality of the flow chambers are provided, differential pressure sensors for testing the differential pressure in the flow chambers are arranged above each of the flow chambers, a pressurizing pipe is arranged on the right side of the flow chamber, the right ends of the plurality of pressurizing pipes are fixedly communicated with a transfer chamber together, an adjusting structure for adjusting the number of connections with the pressurizing pipes is arranged in the transfer chamber, a pressure pusher is arranged on the right side of the transfer chamber, and the transfer chamber is communicated with the output end of the pressure pusher through a pressure docking pipe.

[0006] Further, a limiting component is arranged on the top of the differential pressure sensor.

[0007] Further, the limiting component includes a mounting plate and an arc-shaped baffle. The mounting plate is fixedly connected to the upper surface of the flow cavity. An arc-shaped baffle is arranged above the differential pressure sensor. A pull rod is fixedly connected to the rear surface of the arc-shaped baffle. The rear end of the pull rod penetrates through the mounting plate and is slidably connected to the mounting plate. A hand-held block is fixedly connected to the rear end of the pull rod. A first spring is sleeved on the pull rod. Two ends of the first spring are respectively fixedly connected to the hand-held block and the mounting plate.

[0008] Further, the adjusting structure includes a first sealing cylinder and a second sealing cylinder. The left end of the pressure docking pipe is fixedly connected with a T-shaped pipe inside the transfer cavity. The front end and the rear end of the T-shaped pipe are respectively rotatably connected with the first sealing cylinder and the second sealing cylinder through rotating shafts. The outer side walls of the first sealing cylinder and the second sealing cylinder are respectively attached to the inner side wall of the transfer cavity. Two first docking holes and one second docking hole are sequentially formed in the front and rear of the outer side wall of the first sealing cylinder. Two third docking holes and one fourth docking hole are sequentially formed in the front and rear of the outer side wall of the second sealing cylinder.

[0009] Further, rotation components for controlling the rotation of the first sealing cylinder and the second sealing cylinder are arranged on the outer sides of the first sealing cylinder and the second sealing cylinder.

[0010] Further, a front sealing plate and a rear sealing plate are respectively arranged on the front surface and the rear surface of the transfer cavity.

[0011] Further, the rotation components include rotating rods and turntables. The front ends of the first sealing cylinder and the rear ends of the second sealing cylinder are both fixedly connected with rotating rods. The opposite ends of the two rotating rods respectively penetrate through the front sealing plate and the rear sealing plate and are respectively fixedly connected with turntables.

[0012] Further, three positioning holes are respectively formed in the front surface of the front sealing plate and the rear surface of the rear sealing plate. A positioning rod is slidably connected to the top of the turntable. The opposite ends of the two positioning rods are both fixedly connected with pulling blocks. The opposite ends of the two positioning rods are respectively inserted into the positioning holes in the front sealing plate and the rear sealing plate.

[0013] Further, a second spring is sleeved on the outer side wall of the positioning rod. Two ends of the second spring are respectively fixedly connected with the opposite sides of the pulling block and the turntable.

[0014] A usage method of a porous medium material permeability measuring device, characterized in that: the usage method includes:

[0015] Step S1, respectively place a plurality of porous medium materials inside the flow cavity;

[0016] Step S2: Rotate the first sealing cylinder or the second sealing cylinder to control the number of the first docking hole, the second docking hole, the third docking hole and the fourth docking hole that are in butt joint and communication with the four pressure pipes;

[0017] Step S3: Extrude to provide pressure to the transfer cavity through the pressure pusher, and the transfer cavity pressurizes the interiors of different numbers of flow cavities as required;

[0018] Step S4: Detect by using a differential pressure sensor, and transmit the detection result to an external control terminal to realize the measurement of the permeability of the porous medium material.

[0019] Beneficial effects of the present invention: This device forms a device for measuring the permeability of a porous medium material with an external control terminal. During measurement, a plurality of porous medium materials are respectively placed inside a plurality of flow cavities, and then extruded by a pressure pusher, detected by a differential pressure sensor, and the detection result is transmitted to the external control terminal to realize the measurement of the permeability of the porous medium material. This method can measure a plurality of porous medium materials simultaneously;

[0020] The arc-shaped baffle arranged above the differential pressure sensor plays a limiting effect on the installed differential pressure sensor to ensure stable installation and detection. When the differential pressure sensor needs to be disassembled, only hold the holding block and pull the pull rod backward. At this time, the first spring elongates, and the arc-shaped baffle disengages from the top of the differential pressure sensor, and at this time, it is convenient to disassemble the differential pressure sensor;

[0021] By controlling the rotation of the first sealing cylinder or the second sealing cylinder, the number of the first docking hole, the second docking hole, the third docking hole and the fourth docking hole that are in butt joint and communication with the four pressure pipes can be controlled. The first sealing cylinder or the second sealing cylinder after rotation can be positioned by inserting the positioning rod into three different positioning holes, so as to achieve the effect of controlling the measurement quantity. Description of the Drawings

[0022] Figure 1 is the overall structural schematic diagram of the present invention;

[0023] Figure 2 is the internal side view structural schematic diagram of the transfer cavity of the present invention;

[0024] Figure 3 is the side view connection structural schematic diagram of the mounting plate and the arc-shaped baffle of the present invention;

[0025] Figure 4 is the structural schematic diagram of the front sealing plate of the present invention.

[0026] 1. Flow chamber; 2. Differential pressure detection port; 3. Differential pressure sensor; 4. Differential pressure detection head; 5. Pressurizing pipe; 6. Transfer chamber; 7. Pressure docking pipe; 8. Pressure propeller; 9. Mounting plate; 10. Arc-shaped baffle; 11. Pull rod; 12. Hand-held block; 13. First spring; 14. Front sealing plate; 15. Rear sealing plate; 16. Positioning hole; 17. T-shaped pipe; 18. First sealing cylinder; 19. Second sealing cylinder; 20. Second docking hole; 21. Third docking hole; 22. Fourth docking hole; 23. Rotating rod; 24. Turntable; 25. Positioning rod; 26. Pulling block; 27. Second spring; 28. First docking hole. Detailed implementation manners

[0027] The present invention will be further described below with reference to the accompanying drawings.

[0028] Please refer to Figures 1 to 4 , the present invention provides an embodiment: a porous medium material permeability measuring device, including a flow chamber 1, a plurality of the flow chambers 1 are provided, a differential pressure sensor 3 for testing the differential pressure in the flow chamber 1 is provided above each of the flow chambers 1, a pressurizing pipe 5 is provided on the right side of the flow chamber 1, the right ends of the plurality of pressurizing pipes 5 are fixedly communicated with a transfer chamber 6 together, an adjusting structure for adjusting the number of connections with the pressurizing pipe 5 is provided in the transfer chamber 6, a pressure propeller 8 is provided on the right side of the transfer chamber 6, and the transfer chamber 6 is communicated with the output end of the pressure propeller 8 through a pressure docking pipe 7. Wherein, two differential pressure detection ports 2 are integrally formed at the top of the flow chamber 1, two differential pressure detection heads 4 are integrally formed on both sides of the differential pressure sensor 3, and the bottom end of the differential pressure detection head 4 is inserted into the inside of the differential pressure detection port 2; this device forms a porous medium material permeability measuring device with an external control end. During measurement, a plurality of porous medium materials are respectively placed inside the plurality of flow chambers 1, the number of connections between the transfer chamber 6 and the flow chamber 1 is controlled by an adjusting component, and then it is squeezed by the pressure propeller 8, detected by the differential pressure sensor 3, and the detection result is transmitted to the external control end, so as to realize the measurement of the permeability of the porous medium material. This method can measure a plurality of porous medium materials simultaneously and can also achieve the effect of controlling the measurement quantity.

[0029] Please continue to refer to Figures 1 to 4 As shown, in an embodiment of the present invention, a limiting component is provided at the top of the differential pressure sensor 3. The limiting component can play a limiting effect on the installed differential pressure sensor 3 to ensure stable installation and detection

[0030] Please continue to refer to Figure 1 , Figure 3As shown in the figure, in an embodiment of the present invention, the limiting component includes a mounting plate 9 and an arc-shaped baffle 10. The mounting plate 9 is fixedly connected to the upper surface of the flow chamber 1. An arc-shaped baffle 10 is arranged above the differential pressure sensor 3. The rear surface of the arc-shaped baffle 10 is fixedly connected to a pull rod 11. The rear end of the pull rod 11 passes through the mounting plate 9 and is slidably connected to the mounting plate 9. The rear end of the pull rod 11 is fixedly connected to a hand-held block 12. A first spring 13 is sleeved on the pull rod 11. The two ends of the first spring 13 are respectively fixedly connected to the hand-held block 12 and the mounting plate 9. When it is necessary to disassemble the differential pressure sensor 3, just hold the hand-held block 12 and pull the pull rod 11 backward. At this time, the spring elongates, and the arc-shaped baffle 10 disengages from the top of the differential pressure sensor 3. At this time, it is convenient to disassemble the differential pressure sensor 3. When the disassembly is completed, release the hand-held block 12, and the pull rod 11 will drive the arc-shaped baffle 10 to return under the action of the spring tension.

[0031] Please continue to refer to Figure 2 As shown in the figure, in an embodiment of the present invention, the adjustment structure includes a first sealing cylinder 18 and a second sealing cylinder 19. The left end of the pressure connection pipe 7 is fixedly connected to a T-shaped pipe 17 inside the transfer chamber 6. The front end and the rear end of the T-shaped pipe 17 are respectively rotatably connected to the first sealing cylinder 18 and the second sealing cylinder 19 through rotating shafts. The outer side walls of the first sealing cylinder 18 and the second sealing cylinder 19 are both in contact with the inner side wall of the transfer chamber 6. Two first connection holes 28 and one second connection hole 20 are sequentially opened in front of and behind the outer side wall of the first sealing cylinder 18. Two third connection holes 21 and one fourth connection hole 22 are sequentially opened in front of and behind the outer side wall of the second sealing cylinder 19. The first sealing cylinder 18 and the second sealing cylinder 19 are connected. Bearings are arranged inside both the first sealing cylinder 18 and the second sealing cylinder 19. Then the T-shaped pipe 17 is inserted into the inside of the bearings. The above technology is a common means in the existing connection technology and will not be described in detail here. The present invention controls the rotation of the first sealing cylinder 18 or the second sealing cylinder 19 to control the number of connections between the first connection hole 28, the second connection hole 20, the third connection hole 21, and the fourth connection hole 22 and the four pressurizing pipes 5, and can pressurize the inside of different numbers of flow chambers 1 as needed.

[0032] Please continue to refer to Figure 2 As shown in the figure, in an embodiment of the present invention, a rotating component for controlling the rotation of the first sealing cylinder 18 and the second sealing cylinder 19 is arranged on the outer sides of both the first sealing cylinder 18 and the second sealing cylinder 19. The rotating component can drive the rotation of the first sealing cylinder 18 and the second sealing cylinder 19.

[0033] Please continue to refer to Figure 2As shown in the figure, in one embodiment of the present invention, a front sealing plate 14 and a rear sealing plate 15 are respectively arranged on the front surface and the rear surface of the transfer cavity 6.

[0034] Please continue to refer to Figure 2 As shown in the figure, in one embodiment of the present invention, the rotating assembly includes a rotating rod 23 and a rotating disc 24. The front end of the first sealing cylinder 18 and the rear end of the second sealing cylinder 19 are both fixedly connected with a rotating rod 23. The opposite ends of the two rotating rods 23 respectively penetrate through the front sealing plate 14 and the rear sealing plate 15, and are respectively fixedly connected with a rotating disc 24. By rotating the rotating disc 24 on the first sealing cylinder 18 and the rotating disc 24 on the second sealing cylinder 19, the number of the first sealing cylinder 18 and the second sealing cylinder 19 communicating with the pressurizing pipe 5 can be respectively controlled.

[0035] Please continue to refer to Figure 4 As shown in the figure, in one embodiment of the present invention, three positioning holes 16 are respectively opened on the front surface of the front sealing plate 14 and the rear surface of the rear sealing plate 15. A positioning rod 25 is slidably connected to the top of the rotating disc 24. The opposite ends of the two positioning rods 25 are respectively fixedly connected with a pulling block 26. The opposite ends of the two positioning rods 25 are respectively inserted into the positioning holes 16 on the front sealing plate 14 and the rear sealing plate 15. The three positioning holes 16 are arranged at different positions. By inserting the positioning rod 25 into the three positioning holes 16 at different positions, the rotated first sealing cylinder 18 or the second sealing cylinder 19 is positioned, so that the effect of controlling the measurement quantity is better, and the positions of the first sealing cylinder 18 and the second sealing cylinder 19 are ensured to be fixed.

[0036] Please continue to refer to Figure 2 As shown in the figure, in one embodiment of the present invention, a second spring 27 is sleeved on the outer side wall of the positioning rod 25. The two ends of the second spring 27 are respectively fixedly connected with the opposite sides of the pulling block 26 and the rotating disc 24. The second spring 27 can provide an extrusion force to the positioning rod 25 to ensure that the positioning rod 25 will not fall off from the inside of the positioning hole 16.

[0037] Please refer to Figures 1 to 4 , the present invention provides an embodiment: a use method of a porous medium material permeability measuring device, which is characterized in that: the use method includes:

[0038] Step S1, respectively place a plurality of porous medium materials into the inside of the flow cavity 1;

[0039] Step S2, rotate the first sealing cylinder 18 or the second sealing cylinder 19 to control the number of the first docking holes 28, the second docking holes 20, the third docking holes 21 and the fourth docking holes 22 docking and communicating with the four pressurizing pipes 5;

[0040] Step S3: Apply pressure to the transfer chamber 6 by squeezing with the pressure pusher 8, and the transfer chamber 6 pressurizes the interiors of different numbers of flow chambers 1 as required;

[0041] Step S4: Detect using the differential pressure sensor 3, and transmit the detection result to an external control terminal to measure the permeability of the porous medium material.

[0042] The working principle of the present invention is as follows: Place multiple porous medium materials into the interiors of multiple flow chambers respectively. By rotating the first sealing cylinder or the second sealing cylinder, adjust the number of connections between the first docking hole, the second docking hole, the third docking hole, and the fourth docking hole and the four pressure pipes. Then, squeeze with the pressure pusher, detect using the differential pressure sensor, and transmit the detection result to an external control terminal to measure the permeability of the porous medium material.

[0043] The above are only the preferred embodiments of the present invention, and should not be construed as limitations to this application. Any equivalent changes and modifications made according to the scope of the patent application of the present invention shall fall within the scope covered by the present invention.

Claims

1. A porous medium material permeability measurement device, comprising a flow chamber, characterized in that: There are multiple flow chambers, and a pressure difference sensor for testing the pressure difference in the flow chamber is arranged above each of the flow chambers. A pressurized tube is arranged on the right side of the flow chamber, and the right ends of the multiple pressurized tubes are fixedly connected to a transfer chamber. An adjustment structure for adjusting the number of connections with the pressurized tubes is arranged in the transfer chamber. A pressure thruster is arranged on the right side of the transfer chamber, and the transfer chamber is connected to the output end of the pressure thruster through a pressure docking tube.

2. A porous medium material permeability measuring device according to claim 1, characterized in that: A limit assembly is arranged on the top of the differential pressure sensor.

3. A porous medium material permeability measurement device according to claim 2, characterized in that: The limiting assembly includes a mounting plate and an arc-shaped baffle, the mounting plate is fixedly connected to the upper surface of the flow chamber, an arc-shaped baffle is arranged above the pressure difference sensor, a pull rod is fixedly connected to the rear surface of the arc-shaped baffle, the rear end of the pull rod passes through the mounting plate and is slidably connected to the mounting plate, the rear end of the pull rod is fixedly connected to a hand-held block, a first spring is sleeved on the pull rod, and both ends of the first spring are respectively fixedly connected to the hand-held block and the mounting plate.

4. A porous medium material permeability measurement device according to claim 1, characterized in that: The adjustment structure includes a first sealing tube and a second sealing tube. The left end of the pressure docking tube is located inside the transfer chamber and is fixedly connected to a T-shaped tube. The front and rear ends of the T-shaped tube are respectively rotatably connected to the first sealing tube and the second sealing tube through a rotating shaft. The outer wall of the first sealing tube and the outer wall of the second sealing tube are both in contact with the inner wall of the transfer chamber. Two first docking holes and one second docking hole are sequentially provided in front and behind the outer wall of the first sealing tube, and two third docking holes and one fourth docking hole are sequentially provided in front and behind the outer wall of the second sealing tube.

5. A porous medium material permeability measurement device according to claim 4, characterized in that: The outer sides of the first sealing cylinder and the second sealing cylinder are both provided with a rotating assembly for controlling the rotation of the first sealing cylinder and the second sealing cylinder.

6. A porous medium material permeability measurement device according to claim 4, characterized in that: The front surface and the rear surface of the transfer chamber are respectively provided with a front sealing plate and a rear sealing plate.

7. A porous medium material permeability measurement device according to claim 6, characterized in that: The rotating assembly includes a rotating rod and a rotating disk. The front end of the first sealing cylinder and the rear end of the second sealing cylinder are both fixedly connected to the rotating rod. The opposite ends of the two rotating rods respectively penetrate the front sealing plate and the rear sealing plate and are respectively fixedly connected to the rotating disk.

8. A porous medium material permeability measurement device according to claim 7, characterized in that: The front surface of the front sealing plate and the rear surface of the rear sealing plate are each provided with three positioning holes, the top of the turntable is slidably connected with a positioning rod, the opposite ends of the two positioning rods are fixedly connected with pulling blocks, and the opposite ends of the two positioning rods are respectively inserted into the positioning holes located on the front sealing plate and the rear sealing plate.

9. A porous medium material permeability measurement device according to claim 8, characterized in that: The outer wall of the positioning rod is sleeved with a second spring, and two ends of the second spring are respectively fixedly connected to the pulling block and the opposite side of the rotating disk.

10. A method for using the porous medium material permeability measurement device according to claim 4, characterized in that: The method of use includes: Step S1, placing a plurality of porous medium materials into the flow chamber respectively; Step S2, rotating the first sealing cylinder or the second sealing cylinder to control the number of the first docking hole, the second docking hole, the third docking hole and the fourth docking hole connected to the four pressurized pipes; Step S3, providing pressure in the transfer chamber by squeezing with a pressure pusher, and the transfer chamber pressurizes different numbers of flow chambers as needed; Step S4: Detection is performed using a differential pressure sensor, and the detection result is transmitted to an external control terminal to achieve permeability measurement of porous medium materials.

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