CN111948112A - Penetrating fluid constant-pressure quantitative supply method and device - Google Patents
Penetrating fluid constant-pressure quantitative supply method and device Download PDFInfo
- Publication number
- CN111948112A CN111948112A CN202010797207.1A CN202010797207A CN111948112A CN 111948112 A CN111948112 A CN 111948112A CN 202010797207 A CN202010797207 A CN 202010797207A CN 111948112 A CN111948112 A CN 111948112A
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- 230000000149 penetrating effect Effects 0.000 title claims abstract description 45
- 239000012530 fluid Substances 0.000 title claims abstract description 42
- 238000000034 method Methods 0.000 title claims abstract description 12
- 239000007788 liquid Substances 0.000 claims abstract description 117
- 239000007921 spray Substances 0.000 claims abstract description 25
- 238000005507 spraying Methods 0.000 claims abstract description 7
- 239000012466 permeate Substances 0.000 claims description 12
- 238000005260 corrosion Methods 0.000 claims description 6
- 230000007797 corrosion Effects 0.000 claims description 6
- 230000006837 decompression Effects 0.000 claims description 3
- 239000007769 metal material Substances 0.000 claims description 3
- 230000002572 peristaltic effect Effects 0.000 claims description 3
- 238000012360 testing method Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 2
- 230000035515 penetration Effects 0.000 abstract description 2
- 230000006641 stabilisation Effects 0.000 abstract description 2
- 238000011105 stabilization Methods 0.000 abstract description 2
- 230000035699 permeability Effects 0.000 description 3
- 239000013589 supplement Substances 0.000 description 3
- 239000002253 acid Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/0806—Details, e.g. sample holders, mounting samples for testing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/082—Investigating permeability by forcing a fluid through a sample
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- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
Abstract
The invention relates to the technical field of penetration test equipment, and particularly discloses a constant-pressure quantitative supply method and a constant-pressure quantitative supply device for penetrating fluid. Comprises a liquid storage tank, a liquid supply pump, a metering tank, a liquid supply tank, a spray rod and a nozzle; the measuring tank is internally provided with the liquid level meter, a certain amount of penetrating fluid is measured in the measuring tank by the liquid level meter, the measured penetrating fluid is transferred into the conveying tank, the penetrating fluid is conveyed into the spray rod by compressed air after pressure stabilization treatment and is sprayed out by the nozzle, and the pressure of the penetrating fluid in the spray rod is also kept stable due to the stable air pressure of the compressed air, and the spraying effect from the nozzle is uniform and continuous, so that the invention can realize accurate control on flow and pressure.
Description
Technical Field
The invention relates to the technical field of penetration test equipment, in particular to a constant-pressure quantitative supply method and a constant-pressure quantitative supply device for penetrating fluid.
Background
A permeability test is needed for testing permeability of a novel ceramic fiber pipe barrel, permeation liquid is injected into the pipe barrel, then the aim that the permeation liquid is evenly paved on the inner wall of the pipe barrel is achieved by rotating the pipe barrel, and the permeation liquid completes permeation under the action of centrifugal force and negative pressure outside the pipe barrel.
Generally, a pump is adopted to directly convey liquid, in the permeability test, penetrating liquid needs to be uniformly sprayed on the inner wall of a pipe barrel, so that a liquid supply system needs to ensure that the pressure in a liquid supply pipeline is constant, the required pressure is higher because the penetrating liquid is sprayed out from a nozzle on a spray pipe, and the flow and the lift of the pump are a pile of variables which are mutually restricted, so that the flow stability can be controlled under the condition of ensuring high pressure difficultly.
Disclosure of Invention
The invention solves the problems that: the prior art adopts a pump to directly supply, and the flow rate and the pressure cannot be stably controlled at the same time, thereby providing a constant-pressure quantitative supply method and a supply device.
The invention is realized by the following technical scheme, and the constant-pressure quantitative supply method comprises the following steps:
s1, opening a fourth valve at the bottom of the liquid storage tank, conveying penetrating fluid to the metering tank by the liquid supply pump, stopping the liquid supply pump when the liquid level in the metering tank reaches a set high value, closing the third valve, and obtaining quantitative penetrating fluid by the metering tank;
s2, opening the first valve, enabling penetrating fluid in the metering tank to flow into the liquid supply tank, and opening an emptying valve on the liquid supply tank during the period to facilitate air discharge and penetrating fluid supplement;
s3, opening the second valve, communicating the constant pressure air source with the liquid supply tank, opening the third valve at the bottom of the liquid supply tank, and allowing the penetrating fluid to flow into the spray rod from the bottom hose and be sprayed out from the nozzle on the spray rod to realize constant pressure spraying.
Further, step S2 includes:
s201, detecting the liquid level height in the metering tank by the liquid level meter, entering the next working cycle when the liquid level in the metering tank reaches a set low value, and repeating the step S1 to enable the metering tank to obtain the quantitative penetrating fluid again.
Further, step S3 includes:
s301, the connected gas source needs to be filtered and decompressed through a gas source dual part, and then is connected with a liquid supply tank through a decompression valve.
In another aspect of the invention, a constant-pressure quantitative supply device for penetrating fluid is provided, which comprises a liquid storage tank, a liquid supply pump, a metering tank, a liquid supply tank, a spray rod and a nozzle;
a fourth valve is arranged at the bottom of the liquid storage tank, and penetrating fluid is conveyed to the metering tank through a pipeline by a liquid supply pump;
the liquid level meter is arranged on the metering tank, a high level and a low level are set on the liquid level meter, and an emptying valve is arranged at the bottom of the metering tank;
the metering tank is connected with the liquid supply tank through a pipeline, and a first valve is arranged on the pipeline;
an emptying valve is arranged on the liquid supply tank and is connected with the atmosphere;
the power of the liquid supply tank is provided by compressed air, and an air source is connected with the liquid supply tank through an air source duplex piece, a pressure reducing valve and a second valve;
the bottom of the liquid supply tank is connected with a spray rod through a pipeline, the pipeline is controlled to be opened and closed by a third valve, and a nozzle is arranged on the spray rod.
Furthermore, the liquid level meter comprises a support, a floating ball, a connecting rod, a proximity switch baffle, a high proximity switch and a low proximity switch, wherein the floating ball is connected with the connecting rod and slides up and down under the limit of the support, the proximity switch baffle is arranged on the connecting rod, the high proximity switch and the low proximity switch are arranged on the support, and when the liquid level in the metering tank is at the high level and the low level, the proximity switch baffle just shields the high proximity switch and the low proximity switch.
Further, the liquid supply pump is a peristaltic pump or a diaphragm pump.
Further, the fourth valve is a ball valve, the first valve and the third valve are both pneumatic angle seat valves, the opening and closing of the first valve and the third valve are controlled by a first electromagnetic valve and a second electromagnetic valve respectively, the first electromagnetic valve and the second electromagnetic valve are connected with an air source through pipelines, and the second valve is an electromagnetic valve.
Further, a stirrer and a heater are further arranged in the liquid storage tank.
Furthermore, the liquid storage tank, the metering tank and the liquid supply tank are made of corrosion-resistant metal materials or lined with corrosion-resistant liners.
Further, the pipeline from the second valve to the spray rod is a PEFE transparent hose.
The invention has the beneficial effects that:
the invention adopts the metering tank to measure a fixed amount of penetrating fluid, can ensure the total amount of the penetrating fluid in advance, then transfers the measured penetrating fluid into the conveying tank, conveys the penetrating fluid into the spray rod through the compressed air after pressure stabilization treatment, and sprays the penetrating fluid out from the nozzle.
Drawings
FIG. 1 is a schematic structural view of a constant pressure and constant flow device for permeate according to the present invention.
In the figure:
1. a liquid storage tank; 101. a stirrer; 102. a heater; 103. a fourth valve;
2. a liquid supply pump;
3. a metering tank; 301. a first valve; 302. a first solenoid valve; 303. an atmospheric valve;
4. a liquid level meter; 401. a support; 402. a floating ball; 403. a connecting rod; 404. a proximity switch baffle; 405. a high proximity switch; 406. a low proximity switch;
5. a liquid supply tank; 501. a second valve; 502. a second solenoid valve; 503. an evacuation valve; 504. a gas source duplicate; 505. a pressure reducing valve; 506. a third valve;
6. a spray bar;
7. and (4) a nozzle.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in figure 1, a constant pressure and quantitative penetrating fluid supply device comprises a liquid storage tank 1, a liquid supply pump 2, a metering tank 3, a liquid supply tank 5, a spray rod and a nozzle 7;
the bottom of the liquid storage tank 1 is provided with a fourth valve 103, and penetrating fluid is conveyed to the metering tank 3 by the liquid supply pump 2 through a pipeline;
the liquid level meter 4 is arranged on the metering tank 3, the liquid level meter 4 is set to be high and low, the liquid level meter 4 controls the supplement or discharge of seepage liquid in the metering tank 3, the bottom of the metering tank 3 is provided with an emptying valve 303, the device needs to be cleaned after being stopped, and after being cleaned, residual liquid in the metering tank needs to be emptied through the emptying valve 303;
the metering tank 3 is connected with the liquid supply tank 5 through a pipeline, and a first valve 301 is arranged on the pipeline;
an emptying valve 503 is arranged on the liquid supply tank 5 and is connected with the atmosphere, and when the metered penetrating fluid enters the liquid supply tank 5, the emptying valve 503 needs to be opened to enable the tank to be communicated with the atmosphere;
the power of the liquid supply tank 5 is provided by compressed air, an air source is connected with the liquid supply tank 5 through an air source duplex piece 504, a pressure reducing valve 505 and a second valve 501, the compressed air connected with the liquid supply tank 5 has good pressure stability, and penetrating liquid can be stably discharged from the bottom of the liquid supply tank 5 at a constant speed;
the bottom of the liquid supply tank 5 is connected with a spray rod through a pipeline, the opening and closing of the pipeline are controlled by a third valve 506, and a nozzle 7 is arranged on the spray rod.
In practical application, the liquid level meter 4 includes a bracket 401, a floating ball 402, a connecting rod 403, a proximity switch baffle 404, a high-level proximity switch 405, and a low-level proximity switch 406, the floating ball 402 is connected with the connecting rod 403, and slides up and down under the limit of the bracket 401, the proximity switch baffle 404 is disposed on the connecting rod 403, the high-level proximity switch 405 and the low-level proximity switch 406 are disposed on the bracket 401, and when the liquid level in the measuring tank 3 is at the high level and the low level, the proximity switch baffle 404 just shields the high-level proximity switch 405 and the low-level proximity switch 406.
In practical application, the liquid supply pump 2 is a peristaltic pump or a diaphragm pump, and has the advantages of stability and high precision.
Further, the fourth valve 103 is a ball valve, the first valve 301 and the third valve 506 are both pneumatic angle seat valves, and are controlled to open and close by the first electromagnetic valve 302 and the second electromagnetic valve 502 respectively, the pneumatic angle seat valves are of a pilot type and have the advantage of small flow resistance, the first electromagnetic valve 302 and the second electromagnetic valve 502 are connected with an air source through pipelines, and the second valve 501 is an electromagnetic valve.
In practical application, the liquid storage tank 1 is also provided with a stirrer 101 and a heater 102, the stirrer 101 is used for keeping the penetrating fluid to be uniformly mixed, and the heater 102 can prevent the penetrating fluid from being supercooled and solidified after the temperature is reduced, so that the spraying effect is influenced.
In practical application, the penetrating fluid is an acidic liquid, and the liquid storage tank 1, the metering tank 3 and the liquid supply tank 5 are made of corrosion-resistant metal materials, such as 316L, 304 and the like, or are lined with corrosion-resistant liners.
In practical application, the pipe from the second valve 502 to the spray rod 6 is a PEFE transparent hose, which is acid-resistant and can observe the flow of permeate in the pipe.
In another aspect of the present invention, there is provided a constant pressure quantitative supply method of permeate, comprising the steps of:
s1, opening the fourth valve 103 at the bottom of the liquid storage tank 1, conveying the penetrating fluid to the metering tank 3 by the liquid supply pump 2, stopping the liquid supply pump 2 when the liquid level in the metering tank 3 reaches a set high value, closing the third valve 506, and obtaining quantitative penetrating fluid by the metering tank 3;
s2, opening the first valve 301, enabling the penetrating fluid in the metering tank 3 to flow into the liquid supply tank 5, and opening the emptying valve 503 on the liquid supply tank 5 during the period to facilitate air discharge and penetrating fluid supplement, wherein when the liquid level in the metering tank 3 reaches a set low value, the first valve 301 is closed, and the emptying valve 503 is closed;
s3, opening the second valve 501, communicating the constant pressure air source with the liquid supply tank 5, opening the third valve 506 at the bottom of the liquid supply tank 5, leading the penetrating fluid to flow into the spray rod 6 from the bottom hose, and spraying out from the nozzle 7 on the spray rod 6, thus realizing constant pressure spraying.
In practical applications, step S2 further includes:
s201, detecting the liquid level height in the metering tank 3 by the liquid level meter 4, entering the next working cycle when the liquid level in the metering tank 3 reaches a set low value, and repeating the step S1 to enable the metering tank 3 to obtain quantitative penetrating fluid again.
In practical applications, step S3 further includes:
s301, the connected gas source is filtered and decompressed by the gas source duplex piece 504, and then is connected with the liquid supply tank 5 after passing through the decompression valve 505.
In summary, the supply device of the constant-pressure and constant-quantity supply method of the penetrating fluid can realize accurate control of flow and pressure.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the foregoing embodiments are merely illustrative of the technical spirit and features of the present invention, and the present invention is not limited thereto but may be implemented by those skilled in the art.
Claims (10)
1. A constant-pressure quantitative supply method of penetrating fluid is characterized in that: the method comprises the following steps:
s1, opening a fourth valve (103) at the bottom of the liquid storage tank (1), conveying the penetrating fluid to the metering tank (3) by the liquid supply pump (2), stopping the liquid supply pump (2) when the liquid level in the metering tank (3) reaches a set high value, closing the third valve (506), and obtaining quantitative penetrating fluid by the metering tank (3);
s2, opening the first valve (301), enabling penetrating fluid in the metering tank (3) to flow into the liquid supply tank (5), and opening an exhaust valve (503) on the liquid supply tank (5) during the period to facilitate air exhaust and filling of the penetrating fluid, wherein when the liquid level in the metering tank (3) reaches a set low value, the first valve (301) is closed, and the exhaust valve (503) is closed;
s3, opening a second valve (501), communicating a constant pressure air source with a liquid supply tank (5), opening a third valve (506) at the bottom of the liquid supply tank (5), enabling penetrating fluid to flow into a spray rod (6) from a bottom hose, and spraying out from a nozzle (7) on the spray rod (6) to realize constant pressure spraying.
2. A constant pressure and constant flow method of permeate according to claim 1, wherein: wherein step S2 further includes:
s201, detecting the liquid level height in the metering tank (3) by the liquid level meter (4), entering the next working cycle when the liquid level in the metering tank (3) reaches a set low value, and repeating the step S1 to enable the metering tank (3) to obtain the quantitative penetrating fluid again.
3. A constant pressure supply method of permeate according to claim 1 or 2, characterized in that: wherein step S3 further includes:
s301, the connected gas source is filtered and decompressed by a gas source duplex piece (504), and is connected with a liquid supply tank (5) after passing through a decompression valve (505).
4. The apparatus for constant-pressure quantitative supply of permeate according to any one of claims 1 to 3, wherein: comprises a liquid storage tank (1), a liquid supply pump (2), a metering tank (3), a liquid supply tank (5), a spray rod and a nozzle (7);
the bottom of the liquid storage tank (1) is provided with a fourth valve (103), and the penetrating fluid is conveyed to the metering tank (3) by the liquid supply pump (2) through a pipeline;
a liquid level meter (4) is arranged on the metering tank (3), a high level and a low level are set in the liquid level meter (4), and an emptying valve (303) is arranged at the bottom of the metering tank (3);
the metering tank (3) is connected with the liquid supply tank (5) through a pipeline, and a first valve (301) is arranged on the pipeline;
an emptying valve (503) is arranged on the liquid supply tank (5) and is connected with the atmosphere;
the power of the liquid supply tank (5) is provided by compressed air, and an air source is connected with the liquid supply tank (5) through an air source duplex piece (504), a pressure reducing valve (505) and a second valve (501);
the bottom of the liquid supply tank (5) is connected with a spray rod through a pipeline, the pipeline is controlled to be opened and closed by a third valve (506), and a nozzle (7) is arranged on the spray rod.
5. The constant pressure permeate constant volume supply device according to claim 4, wherein: the liquid level meter (4) comprises a support (401), a floating ball (402), a connecting rod (403), a proximity switch baffle (404), a high-position proximity switch (405) and a low-position proximity switch (406), wherein the floating ball (402) is connected with the connecting rod (403) and slides up and down under the limit of the support (401), the proximity switch baffle (404) is arranged on the connecting rod (403), the high-position proximity switch (405) and the low-position proximity switch (406) are arranged on the support (401), and when the liquid level is at the high position and the low position in the metering tank (3), the proximity switch baffle (404) just shields the high-position proximity switch (405) and the low-position proximity switch (406).
6. A constant pressure permeate dosing device according to claim 4 or 5 wherein: the liquid supply pump (2) is a peristaltic pump or a diaphragm pump.
7. A constant pressure permeate dosing device according to claim 4 or 5 wherein: the fourth valve (103) is a ball valve, the first valve (301) and the third valve (506) are both pneumatic angle seat valves, the opening and the closing of the pneumatic angle seat valves are controlled by a first electromagnetic valve (302) and a second electromagnetic valve (502), the first electromagnetic valve (302) and the second electromagnetic valve (502) are respectively connected with an air source through pipelines, and the second valve (501) is an electromagnetic valve.
8. A constant pressure permeate dosing device according to claim 4 or 5 wherein: a stirrer (101) and a heater (102) are also arranged in the liquid storage tank (1).
9. A constant pressure permeate dosing device according to claim 4 or 5 wherein: the liquid storage tank (1), the metering tank (3) and the liquid supply tank (5) are made of corrosion-resistant metal materials or lined with corrosion-resistant liners.
10. A constant pressure permeate dosing device according to claim 4 or 5 wherein: the pipeline from the second valve (502) to the spray rod (6) is a PEFE transparent hose.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010797207.1A CN111948112A (en) | 2020-08-10 | 2020-08-10 | Penetrating fluid constant-pressure quantitative supply method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010797207.1A CN111948112A (en) | 2020-08-10 | 2020-08-10 | Penetrating fluid constant-pressure quantitative supply method and device |
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| Publication Number | Publication Date |
|---|---|
| CN111948112A true CN111948112A (en) | 2020-11-17 |
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| CN202010797207.1A Pending CN111948112A (en) | 2020-08-10 | 2020-08-10 | Penetrating fluid constant-pressure quantitative supply method and device |
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| CN (1) | CN111948112A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113155681A (en) * | 2021-05-13 | 2021-07-23 | 西安石油大学 | Device for simulating action of seepage force on rock by using centrifugal force and experimental method |
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