CN117839443A - Leak detection method and system of ultrafiltration concentration device - Google Patents
Leak detection method and system of ultrafiltration concentration device Download PDFInfo
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- CN117839443A CN117839443A CN202410119835.2A CN202410119835A CN117839443A CN 117839443 A CN117839443 A CN 117839443A CN 202410119835 A CN202410119835 A CN 202410119835A CN 117839443 A CN117839443 A CN 117839443A
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- ultrafiltration membrane
- pipe
- ultrafiltration
- membrane element
- detection
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- 238000000108 ultra-filtration Methods 0.000 title claims abstract description 98
- 238000001514 detection method Methods 0.000 title claims abstract description 92
- 239000012528 membrane Substances 0.000 claims abstract description 73
- 239000007788 liquid Substances 0.000 claims description 33
- 239000012295 chemical reaction liquid Substances 0.000 claims description 12
- 239000012495 reaction gas Substances 0.000 claims description 12
- KJFMBFZCATUALV-UHFFFAOYSA-N phenolphthalein Chemical compound C1=CC(O)=CC=C1C1(C=2C=CC(O)=CC=2)C2=CC=CC=C2C(=O)O1 KJFMBFZCATUALV-UHFFFAOYSA-N 0.000 claims description 10
- 239000007789 gas Substances 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 8
- 235000010585 Ammi visnaga Nutrition 0.000 claims description 3
- 244000153158 Ammi visnaga Species 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 6
- 238000005259 measurement Methods 0.000 description 3
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012510 hollow fiber Substances 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000005374 membrane filtration Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a leak detection method and a leak detection system of an ultrafiltration concentration device, relates to the technical field of ultrafiltration membrane leak detection, and solves the technical problems that the detection efficiency of an ultrafiltration membrane element is low and the specific leak position is difficult to accurately judge; including detecting case, multiunit milipore filter element and being located the feed liquor pipe on milipore filter element top, a plurality of driving disks are installed at the top of detecting the case, install the end cover that is used for sealed milipore filter element bottom on the driving disk, and the top of detecting the case is equipped with the intake pipe, and the bottom intercommunication of intake pipe has a plurality of plugs that extend to the feed liquor intraductal, and milipore filter element top is equipped with the barometer of installing in the intake pipe, all installs first solenoid valve in the intake pipe between two adjacent barometers. The invention is convenient for carrying out leakage detection on a plurality of ultrafiltration membrane elements at one time, greatly improves the leakage detection efficiency, and not only is convenient for quickly judging whether the ultrafiltration membrane elements are damaged and leaked, but also is convenient for accurately judging the specific leakage position.
Description
Technical Field
The invention relates to the technical field of ultrafiltration membrane leakage detection, in particular to a leakage detection method and a leakage detection system of an ultrafiltration concentration device.
Background
Ultrafiltration and concentration devices are devices for separating and concentrating liquids, which are mainly implemented using ultrafiltration technology. The ultrafiltration technology is to separate out impurities, particles, colloid and other substances in the liquid by taking pressure as driving force and adopting an ultrafiltration membrane filtration mode, and simultaneously realize the concentration of the liquid.
The ultrafiltration membrane element is of a cylindrical structure formed by closely arranging a plurality of membrane wires (hollow fiber tubes), the upper end face and the lower end face are encapsulated by PU resin, produced water is discharged from a central hole, and a produced water pipe and the central hole are sealed by double O-rings. The ultrafiltration membrane element is damaged by leakage, so that the concentration effect is affected, and the damage of the ultrafiltration membrane element is mainly represented by the leakage caused by the breakage of membrane wires, so that the ultrafiltration membrane element in the ultrafiltration concentration device needs to be subjected to periodical leakage detection after the ultrafiltration concentration device is used for a period of time.
The existing preferred leak detection method is that detection liquid is uniformly coated on the outer side wall of an ultrafiltration membrane element, then gas is introduced into the ultrafiltration membrane element, when a leak point exists in a membrane wire, bubbles appear in the detection liquid at the corresponding position, so that the leak position is determined, but the bubbles are easy to break in the swelling process, on the other hand, when more bubbles emerge, the specific position is difficult to accurately judge, in addition, the leak detection method needs to detect the ultrafiltration membrane element one by one, and a plurality of ultrafiltration membrane elements are usually arranged in an ultrafiltration concentration device, so that the detection efficiency is greatly influenced one by one detection.
Disclosure of Invention
The invention aims to provide a leak detection method and a leak detection system of an ultrafiltration concentration device, which solve the problems that the detection efficiency of an ultrafiltration membrane element is low and the specific leak position is difficult to accurately judge.
The aim of the invention can be achieved by the following technical scheme:
the utility model provides a leak hunting system of ultrafiltration enrichment facility, includes detection case, multiunit milipore filter element and is located the feed liquor pipe on milipore filter element top, a plurality of driving disks are installed at the top of detection case, install the end cover that is used for sealed milipore filter element bottom on the driving disk, the top of detection case is equipped with the intake pipe, the bottom intercommunication of intake pipe has a plurality of plugs that extend to the feed liquor intraductal, milipore filter element top is equipped with installs the barometer in the intake pipe, adjacent two all install first solenoid valve in the intake pipe between the barometer, the outside cover of detection case is equipped with the drain pan, be equipped with the cylinder that is used for driving the detection case to go up and down in the drain pan, every group two the symmetry is provided with hollow structure's arc between the milipore filter element, install liquid feed mechanism between detection case and the arc.
As a further scheme of the invention: the liquid supply mechanism comprises a double-cavity plate arranged between every two ultrafiltration membrane elements, the double-cavity plate is fixedly arranged at the top of the detection box, a pump body is arranged in the detection box, the output end of the pump body is communicated with a transverse pipe through a conveying pipe, two ends of the transverse pipe are connected with the inner wall of the detection box, the side wall of the double-cavity plate, which is close to the bottom, is symmetrically communicated with a branch pipe, a second electromagnetic valve is arranged on the branch pipe, an electric push rod is arranged between the arc-shaped plate and the double-cavity plate, and a corrugated pipe is communicated between the arc-shaped plate and the double-cavity plate.
As a further scheme of the invention: the bottom of the detection box is provided with an inner groove, and a piston rod of the air cylinder is connected with the bottom of the inner groove.
As a further scheme of the invention: the plug is of a truncated cone-shaped structure, the diameter of the top end of the plug is larger than that of the bottom end of the plug, and the outer side of the plug is sleeved with a matched sealing sleeve.
As a further scheme of the invention: the middle position inside the double-cavity plate is provided with a longitudinal baffle plate, and the inner cavity of the double-cavity plate is equally divided into two symmetrical cavities by the longitudinal baffle plate.
As a further scheme of the invention: the ultrafiltration membrane device is characterized in that a matched liquid suction pad is arranged on one side of the arc-shaped plate, which is close to the ultrafiltration membrane element, and a plurality of liquid outlet holes which are uniformly distributed are formed on one side of the arc-shaped plate, which is close to the liquid suction pad.
A leak detection method of a leak detection system of an ultrafiltration concentration device, comprising the following steps:
s1: the liquid inlet pipe of the ultrafiltration membrane element is upward, and the bottom end of the liquid inlet pipe is inserted into an end cover on the driving disc;
s2: starting the air cylinder to drive the detection box to ascend, so that the plug at the bottom end of the air inlet pipe is in sealing connection with the liquid inlet pipe at the top end of the ultrafiltration membrane element;
s3: starting all the first electromagnetic valves, continuously conveying reaction gas by using an air inlet pipe, enabling the reaction gas to enter an ultrafiltration membrane element through a plurality of plugs respectively, and closing all the first electromagnetic valves after the reaction gas is conveyed for a set time;
s4: observing whether the numerical values of the barometers fluctuate, if the numerical values of the barometers are reduced, the corresponding ultrafiltration membrane element has leakage phenomenon, and carrying out subsequent detection, if the barometer is kept stable, no leakage occurs, and the subsequent detection is not needed;
s5: for the ultrafiltration membrane element with leakage phenomenon, starting a corresponding electric push rod to drive an arc plate to be partially attached to the side wall of the ultrafiltration membrane element, simultaneously opening a corresponding second electromagnetic valve, starting a pump body to convey reaction liquid in a detection box into a cavity of a corresponding double-cavity plate through a transverse pipe and a corresponding branch pipe, finally enabling the reaction liquid to enter the arc plate through a corrugated pipe to flow to the side wall of the ultrafiltration membrane element, and simultaneously enabling the reaction liquid to be uniformly coated on the outer side of the ultrafiltration membrane element by rotating a driving disc;
s6: observing the color development condition of the outer side of the ultrafiltration membrane element, and marking by using a toothpick inserted into the color development position, wherein the color development position is the specific position of the leakage of the ultrafiltration membrane element.
As a further scheme of the invention: the reaction liquid in the detection box is colorless phenolphthalein solution, and the reaction gas conveyed by the air inlet pipe is alkaline gas.
The invention has the beneficial effects that:
1. according to the invention, the bottom ends of the ultrafiltration membrane elements are conveniently sealed and loaded through the end covers, the detection box is driven to ascend by the air cylinder, the liquid inlet pipe at the top end of the ultrafiltration membrane elements is conveniently sealed and butted with the plug at the bottom of the air inlet pipe, air is conveniently introduced into each ultrafiltration membrane element by the air inlet pipe, the air inlet pipe is conveniently blocked in a multi-section way by matching with the electromagnetic valves, whether the numerical value of each barometer obviously fluctuates or not is observed, so that whether the ultrafiltration membrane elements leak or not can be conveniently determined, and the leakage detection efficiency is facilitated to be improved.
2. According to the invention, the colorless phenolphthalein solution in the detection box is conveniently conveyed into the transverse tube by controlling the arc plate to be close to the leaked ultrafiltration membrane element, the corresponding second electromagnetic valve is opened, the colorless phenolphthalein solution is conveniently conveyed into the cavity of the corresponding double-cavity plate by matching with the branch tube, finally, the colorless phenolphthalein solution is guided into the arc plate by the corrugated tube, the colorless phenolphthalein solution is conveniently and uniformly coated on the outer surface of the ultrafiltration membrane element by matching with the rotation of the driving disc, alkaline gas is conveyed into the ultrafiltration membrane element by using the air inlet tube, and the alkaline gas flows out from the leakage position to react with the colorless phenolphthalein solution for color development, so that the specific leakage position can be conveniently and accurately judged.
Drawings
The invention is further described below with reference to the accompanying drawings.
FIG. 1 is a schematic diagram of a leak detection system of an ultrafiltration concentration device of the present invention;
FIG. 2 is a perspective view of the connection between an arcuate plate and a dual chamber plate in a leak detection system of an ultrafiltration and concentration device of the present invention;
FIG. 3 is a cross-sectional view of a dual chamber plate in a leak detection system of an ultrafiltration concentration device of the present invention;
FIG. 4 is a perspective view of a plug in a leak detection system of an ultrafiltration concentration device of the present invention;
fig. 5 is an enlarged view of a portion a in fig. 1.
In the figure: 1. a detection box; 2. an ultrafiltration membrane element; 3. a liquid inlet pipe; 4. a drive plate; 5. an end cap; 6. an air inlet pipe; 7. a plug; 8. an air pressure gauge; 9. a first electromagnetic valve; 10. a bottom case; 11. a cylinder; 12. an arc-shaped plate; 13. a dual-cavity plate; 14. a pump body; 15. a transverse tube; 16. a branch pipe; 17. a second electromagnetic valve; 18. an electric push rod; 19. a bellows; 20. an inner groove; 21. sealing sleeve; 22. a longitudinal separator; 23. a liquid absorbing pad.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-5, the invention discloses a leak detection system of an ultrafiltration concentration device, which comprises a detection box 1, a plurality of groups of ultrafiltration membrane elements 2 and a liquid inlet pipe 3 positioned at the top end of the ultrafiltration membrane elements 2, wherein a plurality of driving disks 4 are arranged at the top of the detection box 1, an end cover 5 for sealing the bottom end of the ultrafiltration membrane elements 2 is arranged on the driving disks 4, a bottom shell 10 is sleeved outside the detection box 1, an air cylinder 11 for driving the detection box 1 to lift is arranged in the bottom shell 10, an inner groove 20 is arranged at the bottom of the detection box 1, and a piston rod of the air cylinder 11 is connected with the bottom of the inner groove 20, so that the lifting of the detection box 1 is conveniently controlled.
The top of detecting case 1 is equipped with intake pipe 6, intake pipe 6's bottom intercommunication has a plurality of end caps 7 that extend to in the feed liquor pipe 3, end cap 7 is round platform shape structure, end cap 7's top diameter is greater than its bottom diameter, and end cap 7's outside cover is equipped with assorted seal cover 21, improve the leakproofness that end cap 7 pegged graft with feed liquor pipe 3, milipore filter element 2 top is equipped with the barometer 8 of installing on intake pipe 6, whether the fluctuation takes place for the convenience to detect atmospheric pressure, in this embodiment, with a plurality of barometers 8 and data acquisition ware electric connection, the numerical variation of a plurality of barometers 8 of being convenient for automatic recording, all install first solenoid valve 9 on intake pipe 6 between two adjacent barometers 8, the multistage of being convenient for carrying out corresponding quantity to intake pipe 6 according to the quantity of sealed milipore filter element 2 is kept apart.
An arc-shaped plate 12 with a hollow structure is symmetrically arranged between each group of two ultrafiltration membrane elements 2, a liquid supply mechanism is arranged between the detection box 1 and the arc-shaped plate 12, the liquid supply mechanism comprises a double-cavity plate 13 arranged between each group of two ultrafiltration membrane elements 2, a longitudinal baffle 22 is arranged at the middle position inside the double-cavity plate 13, the inner cavity of the double-cavity plate 13 is equally divided into two symmetrical cavities by the longitudinal baffle 22, and the double-cavity plate 13 is fixedly arranged at the top of the detection box 1;
the detection box 1 is internally provided with a pump body 14, the output end of the pump body 14 is communicated with a transverse pipe 15 through a conveying pipe, two ends of the transverse pipe 15 are connected with the inner wall of the detection box 1, side walls of the double-cavity plate 13 close to the bottom end are symmetrically communicated with branch pipes 16, the branch pipes 16 are provided with second electromagnetic valves 17, an electric push rod 18 is arranged between the arc plate 12 and the double-cavity plate 13, a corrugated pipe 19 is communicated between the arc plate 12 and the double-cavity plate 13, the arc plate 12 is conveniently controlled to horizontally move by the electric push rod 18, a matched liquid suction pad 23 is arranged on one side of the arc plate 12 close to the ultrafiltration membrane element 2, and a plurality of evenly distributed liquid outlet holes are formed in one side of the arc plate 12 close to the liquid suction pad 23.
A leak detection method of a leak detection system of an ultrafiltration concentration device, comprising the following steps:
s1: the liquid inlet pipe 3 of the ultrafiltration membrane element 2 faces upwards, and the bottom end of the liquid inlet pipe is inserted into the end cover 5 on the driving disc 4;
s2: the starting cylinder 11 drives the detection box 1 to ascend, so that the plug 7 at the bottom end of the air inlet pipe 6 is in sealing connection with the liquid inlet pipe 3 at the top end of the ultrafiltration membrane element 2;
s3: all the first electromagnetic valves 9 are opened, the air inlet pipe 6 is utilized to continuously convey the reaction gas, the reaction gas enters the ultrafiltration membrane element 2 through the plugs 7 respectively, and after the reaction gas is conveyed for a set time, all the first electromagnetic valves 9 are closed;
s4: observing whether the numerical values of the barometers 8 fluctuate, if the pressure drops, the corresponding ultrafiltration membrane element 2 has leakage phenomenon, and carrying out subsequent detection, if the pressure is kept stable, no leakage occurs, and the subsequent detection is not needed;
s5: for the ultrafiltration membrane element 2 with leakage phenomenon, starting a corresponding electric push rod 18 to drive an arc plate 12 to be attached to the side wall part of the ultrafiltration membrane element 2, simultaneously opening a corresponding second electromagnetic valve 17, starting a pump body 14 to convey reaction liquid in the detection box 1 into a cavity of a corresponding double-cavity plate 13 through a transverse pipe 15 and a corresponding branch pipe 16, finally enabling the reaction liquid to enter the arc plate 12 through a corrugated pipe 19 to flow to the side wall of the ultrafiltration membrane element 2, and simultaneously enabling the reaction liquid to be uniformly coated on the outer side of the ultrafiltration membrane element 2 by rotating a driving disc 4;
s6: the color development condition of the outer side of the ultrafiltration membrane element 2 is observed, and a toothpick is inserted into the color development position for marking, namely the specific position of the leakage of the ultrafiltration membrane element 2.
The reaction liquid in the detection box 1 is colorless phenolphthalein solution, the reaction gas conveyed by the air inlet pipe 6 is alkaline gas, in this embodiment, the alkaline gas is specifically ammonia gas, and the ammonia gas has alkalinity and can react with phenolic hydroxyl groups in the phenolphthalein solution, so that the solution presents red color.
The working principle of the invention is as follows: the method comprises the steps of respectively inserting the bottom ends of a plurality of ultrafiltration membrane elements 2 to be detected into end covers 5 on a driving disc 4, starting an air cylinder 11 to drive a detection box 1 to ascend, enabling a plurality of plugs 7 at the bottom end of an air inlet pipe 6 to be respectively in sealing connection with liquid inlet pipes 3 at the top ends of the plurality of ultrafiltration membrane elements 2, starting all first electromagnetic valves 9, continuously conveying ammonia by the air inlet pipe 6, enabling the ammonia to respectively enter the ultrafiltration membrane elements 2 through the plurality of plugs 7, closing all the first electromagnetic valves 9 after conveying for a proper time, waiting for a proper time, if the air pressure gauge 8 has obvious numerical fluctuation, damaging the ultrafiltration membrane elements 2 corresponding to the air pressure gauge 8, and carrying out subsequent detection, otherwise, if the air pressure gauge 8 does not have obvious numerical fluctuation, enabling the ultrafiltration membrane elements 2 corresponding to be intact, without carrying out subsequent detection, starting a corresponding electric push rod 18 and a second electromagnetic valve 17 for the ultrafiltration membrane elements 2 with the leakage phenomenon, driving an arc plate 12 to be in contact with side wall parts of the ultrafiltration membrane elements 2, starting a pump body 14 to convey colorless phenolphthalein solution in the detection box 1 into a transverse pipe 15, and after the proper time, after waiting for the proper time, if the air pressure gauge 8 has obvious numerical fluctuation, enabling the air pressure gauge 8 to have obvious numerical fluctuation, and if the corresponding to have obvious numerical fluctuation, and if the air pressure gauge 8 does not have obvious numerical fluctuation, and finally, carrying out subsequent detection on the corresponding to have a proper numerical fluctuation, and carrying out a proper numerical fluctuation, and judging on the actual condition, and carrying out a proper measurement on the actual condition, and carrying out a proper measurement, and a proper quality, and a proper measurement.
The foregoing describes one embodiment of the present invention in detail, but the description is only a preferred embodiment of the present invention and should not be construed as limiting the scope of the invention. All equivalent changes and modifications within the scope of the present invention are intended to be covered by the present invention.
Claims (8)
1. The utility model provides a leak hunting system of ultrafiltration enrichment facility, includes detection case (1), multiunit milipore filter element (2) and is located feed liquor pipe (3) on milipore filter element (2) top, a serial communication port, a plurality of driving disks (4) are installed at the top of detection case (1), install on driving disks (4) and be used for sealed end cover (5) of milipore filter element (2) bottom, the top of detection case (1) is equipped with intake pipe (6), the bottom intercommunication of intake pipe (6) has a plurality of end caps (7) that extend to in feed liquor pipe (3), milipore filter element (2) top is equipped with barometer (8) of installing on intake pipe (6), adjacent two all install first solenoid valve (9) on intake pipe (6) between barometer (8), the outside cover of detection case (1) is equipped with drain pan (10), be equipped with in drain pan (10) and be used for driving cylinder (11) that detect case (1) goes up and down, every group two between milipore filter element (2) symmetry is provided with end cap (12), install arc between detection case (12) and the arc.
2. The leak detection system of an ultrafiltration concentration device according to claim 1, wherein the liquid supply mechanism comprises a double-cavity plate (13) arranged between every two ultrafiltration membrane elements (2), the double-cavity plate (13) is fixedly arranged at the top of the detection box (1), a pump body (14) is arranged in the detection box (1), the output end of the pump body (14) is communicated with a transverse pipe (15) through a conveying pipe, two ends of the transverse pipe (15) are connected with the inner wall of the detection box (1), branch pipes (16) are symmetrically communicated at the side wall of the double-cavity plate (13) close to the bottom, a second electromagnetic valve (17) is arranged on each branch pipe (16), an electric push rod (18) is arranged between the arc plate (12) and the double-cavity plate (13), and a corrugated pipe (19) is communicated between the arc plate (12) and the double-cavity plate (13).
3. The leak detection system of the ultrafiltration concentration device according to claim 1, wherein the bottom of the detection box (1) is provided with an inner groove (20), and a piston rod of the air cylinder (11) is connected with the bottom of the inner groove (20).
4. The leak detection system of the ultrafiltration concentration device according to claim 1, wherein the plug (7) has a truncated cone-shaped structure, the top end diameter of the plug (7) is larger than the bottom end diameter of the plug, and a matched sealing sleeve (21) is sleeved outside the plug (7).
5. The leak detection system of the ultrafiltration concentration device according to claim 2, wherein a longitudinal baffle plate (22) is arranged at the middle position inside the double-cavity plate (13), and the longitudinal baffle plate (22) equally divides the inner cavity of the double-cavity plate (13) into two symmetrical cavities.
6. The leak detection system of the ultrafiltration concentration device according to claim 1, wherein a matched liquid suction pad (23) is arranged on one side of the arc-shaped plate (12) close to the ultrafiltration membrane element (2), and a plurality of evenly distributed liquid outlet holes are formed on one side of the arc-shaped plate (12) close to the liquid suction pad (23).
7. A method of leak detection for a leak detection system of an ultrafiltration concentration apparatus according to any one of claims 1 to 6 comprising the steps of:
s1: the liquid inlet pipe (3) of the ultrafiltration membrane element (2) is upwards, and the bottom end of the liquid inlet pipe is inserted into the end cover (5) on the driving disc (4);
s2: the cylinder (11) is started to drive the detection box (1) to ascend, so that the plug (7) at the bottom end of the air inlet pipe (6) is in sealing connection with the liquid inlet pipe (3) at the top end of the ultrafiltration membrane element (2);
s3: all the first electromagnetic valves (9) are opened, the reaction gas is continuously conveyed by utilizing the air inlet pipe (6), the reaction gas enters the ultrafiltration membrane element (2) through the plugs (7), and after the reaction gas is conveyed for a set time, all the first electromagnetic valves (9) are closed;
s4: observing whether the numerical values of the barometers (8) fluctuate, if the pressure drops, the corresponding ultrafiltration membrane element (2) has leakage phenomenon, and carrying out subsequent detection, if the pressure is kept stable, no leakage occurs, and the subsequent detection is not needed;
s5: for the ultrafiltration membrane element (2) with leakage phenomenon, starting a corresponding electric push rod (18) to drive an arc plate (12) to be attached to the side wall part of the ultrafiltration membrane element (2), simultaneously opening a corresponding second electromagnetic valve (17), starting a pump body (14) to convey reaction liquid in a detection box (1) into a cavity of a corresponding double-cavity plate (13) through a transverse pipe (15) and a corresponding branch pipe (16), finally enabling the reaction liquid to enter the arc plate (12) through a corrugated pipe (19) to flow to the side wall of the ultrafiltration membrane element (2), and simultaneously, driving a disc (4) to rotate to enable the reaction liquid to be uniformly coated on the outer side of the ultrafiltration membrane element (2);
s6: observing the color development condition of the outer side of the ultrafiltration membrane element (2), and marking by using a toothpick inserted into the color development position, wherein the color development position is the specific position of the leakage of the ultrafiltration membrane element (2).
8. The leak detection method of a leak detection system of an ultrafiltration concentration apparatus according to claim 7, wherein the reaction liquid in the detection tank (1) is colorless phenolphthalein solution, and the reaction gas conveyed by the gas inlet pipe (6) is alkaline gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410119835.2A CN117839443A (en) | 2024-01-29 | 2024-01-29 | Leak detection method and system of ultrafiltration concentration device |
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| CN202410119835.2A CN117839443A (en) | 2024-01-29 | 2024-01-29 | Leak detection method and system of ultrafiltration concentration device |
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| CN117839443A true CN117839443A (en) | 2024-04-09 |
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| CN202410119835.2A Pending CN117839443A (en) | 2024-01-29 | 2024-01-29 | Leak detection method and system of ultrafiltration concentration device |
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