CN217210728U - Thin liquid film thickness measuring device - Google Patents
Thin liquid film thickness measuring device Download PDFInfo
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- CN217210728U CN217210728U CN202220767062.5U CN202220767062U CN217210728U CN 217210728 U CN217210728 U CN 217210728U CN 202220767062 U CN202220767062 U CN 202220767062U CN 217210728 U CN217210728 U CN 217210728U
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- liquid film
- thin liquid
- tank
- probe
- film thickness
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- 239000007788 liquid Substances 0.000 title claims abstract description 57
- 239000000523 sample Substances 0.000 claims abstract description 48
- 239000011521 glass Substances 0.000 claims abstract description 11
- 238000005259 measurement Methods 0.000 claims description 10
- 230000003028 elevating effect Effects 0.000 claims description 3
- 238000012546 transfer Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 description 7
- 230000009286 beneficial effect Effects 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 238000001704 evaporation Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000006399 behavior Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000002848 electrochemical method Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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Abstract
The utility model discloses a thin liquid film thickness measuring device, which comprises a tank with an opening at the upper end, wherein a glass plate covers the opening of the tank, a horizontal electrode plate is arranged in the tank, a vertical probe is arranged above the electrode plate, a dodging hole is arranged on the glass plate, the probe penetrates out of the dodging hole and is fixedly arranged on the dodging hole, a spiral micrometer head is fixedly arranged on a lifting device, the probe and the electrode plate are respectively connected with the positive electrode and the negative electrode of a power supply through leads, and an ammeter is arranged on the leads; the scheme has simple structure and convenient operation, and can accurately measure the thickness of the thin liquid film through the matching of the probe and the electrode plate; meanwhile, the temperature and the humidity in the measuring environment are controllable, and the influence on the thickness of the thin liquid film due to the change of the temperature and the humidity is eliminated.
Description
Technical Field
The utility model relates to a liquid film thickness measurement technical field, concretely relates to thin liquid film thickness measurement device.
Background
Under the action of evaporation, condensation, dewing, capillary action, adsorption and chemical condensation caused by temperature and climate change of metal materials in an atmospheric environment, a thin liquid film is condensed on the metal surface and formed, the thickness and the dispersion degree of the thin liquid film can be influenced by day and night and weather conditions, the thickness of the common thin liquid film is hundreds of micrometers, the qualitative influence of the thickness of the thin liquid film on the atmospheric corrosion speed is provided in the early 40 s and is successively proved in experiments, but the basic law of atmospheric corrosion needs to be researched, the metal corrosion behaviors under the thin liquid films with different thicknesses need to be researched, and no matter which electrochemical method is adopted for researching the metal corrosion behavior under the thin liquid film, the thickness of the thin liquid film needs to be accurately measured firstly, so that a measuring device capable of accurately measuring the thickness of the thin liquid film is urgently needed.
SUMMERY OF THE UTILITY MODEL
The above-mentioned not enough to prior art, the utility model provides a thin liquid film thickness measurement device can the thickness of the thin liquid film of accurate measurement.
In order to achieve the above object, the utility model adopts the following technical scheme:
the utility model provides a thin liquid film thickness measurement device, it includes upper end open-ended cell box, and the opening part of cell box covers there is the glass board, is provided with horizontally plate electrode in the cell box, and the top of plate electrode is provided with vertical probe, is provided with on the glass board and dodges the hole, and the probe is worn out and fixed the setting at last from dodging the hole, and the spiral micrometer head is fixed to be set up on elevating gear, and probe and plate electrode pass through the wire and are connected with the positive negative pole of power respectively, and are provided with the ampere meter on the wire.
The beneficial effects of adopting the above technical scheme are: the method comprises the steps of arranging a thin liquid film with the thickness to be measured on the upper surface of a horizontal electrode plate, driving a probe to gradually descend, enabling an ammeter to have a certain reading when the probe just contacts with the upper surface of the thin liquid film, recording the reading A of a spiral micrometer head at the moment, driving the probe to continuously descend through a knob on the spiral micrometer head until the reading of the ammeter is suddenly increased, indicating that the probe is in contact with the upper surface of the electrode plate, recording the reading B of the spiral micrometer head at the moment, and enabling the thickness of the thin liquid film to be a difference value between the reading A and the reading B.
Furthermore, four upright posts which are arranged in a rectangular shape are arranged in the tank box, the electrode plate is movably sleeved on the four upright posts, external threads are arranged on the upright posts, and nuts for fixing the electrode plate are arranged on the upright posts at the upper end and the lower end of the electrode plate.
The beneficial effects of adopting the above technical scheme are: the height of the electrode plate can be adjusted through the upright posts, and the electrode plate is fixed through the nuts; meanwhile, the electrode plate can be in a horizontal state through fine adjustment of the nut, and uneven thickness of a thin liquid film on the electrode plate due to inclination of the electrode plate is prevented.
Furthermore, the lifting device comprises a hydraulic telescopic device and an oil tank, the hydraulic telescopic device comprises an oil cylinder and a piston rod, the micrometer screw head is connected with the piston rod through a support rod, an oil inlet pipeline and an oil return pipeline are arranged between the oil cylinder and the oil tank, an oil transfer pump is arranged on the oil inlet pipeline, and a switch valve is arranged on the oil return pipeline.
The beneficial effects of adopting the above technical scheme are: oil in the oil tank is injected into the oil cylinder through the oil delivery pump, and the piston rod is driven to rise, so that the probe rises; when the probe needs to descend, a switch valve on the oil return pipeline is opened, the probe and the piston rod can automatically descend under the action of self gravity, and oil pressure in the oil cylinder returns to the oil tank, so that no external load exists in the descending process of the probe, the measuring safety is improved, if the probe is forcibly driven to descend in a hydraulic mode, the probe is also forcibly driven to descend after being contacted with the electrode plate, and the probe is extremely easy to damage under the action of the forced load when the probe is forcibly driven to descend.
Furthermore, the oil inlet pipeline and the oil return pipeline are both provided with one-way valves.
Furthermore, the upper end of the piston rod is provided with a balancing weight, and the balancing weight increases the weight of the piston rod, so that the piston rod is favorable for driving the probe to automatically descend.
Furthermore, the bottom of one side of the tank is provided with a wet air inlet, the upper end of the other side of the tank is provided with a wet air outlet, and the tank is provided with a humidity detector.
The beneficial effects of adopting the above technical scheme are: the wet air inlet and the wet air outlet are arranged, so that the wet air is continuously injected into the tank, the humidity in the tank is monitored in real time by the humidity detector, and the thin liquid film is prevented from evaporating due to the fact that the humidity in the tank is too low, and the thickness of the thin liquid film is prevented from being greatly changed; and meanwhile, the wet air inlet is arranged at the bottom of one side of the tank box, so that the fluctuation of the thickness of the thin liquid film caused by the fact that wet air is directly blown to the upper surface of the electrode plate is prevented.
Furthermore, the bottom of the tank is provided with a controllable electric blanket, and the tank is provided with a thermometer, so that the temperature in the tank can be controlled and monitored, and the influence on the uniform formation of the thickness of the thin liquid film due to the temperature is prevented.
Furthermore, the spiral micrometer head is a rotary electronic differential head, and manual scale reading is replaced by electronic reading, so that errors caused by manual scale reading are avoided, and the accuracy of measurement is improved.
The utility model has the advantages that: the scheme has simple structure and convenient operation, and can accurately measure the thickness of the thin liquid film through the matching of the probe and the electrode plate; meanwhile, the temperature and the humidity in the measuring environment are controllable, and the influence on the thickness of the thin liquid film due to the change of the temperature and the humidity is eliminated.
Drawings
Fig. 1 is a schematic structural view of a thin liquid film thickness measuring apparatus.
The device comprises a tank 1, a tank 2, a glass plate 3, an electrode plate 4, a probe 5, an avoidance hole 6, a lead 7, a power supply 8, an ammeter 9, a column 10, a nut 11, an oil tank 12, an oil cylinder 13, a piston rod 14, a support rod 15, an oil delivery pump 16, a switch valve 17, a one-way valve 18, a balancing weight 19, a wet air inlet 20, a wet air outlet 21, a humidity detector 22, a controllable electric blanket 23, a thermometer 24, an electronic differential head 25 and a thin liquid film.
Detailed Description
The following description of the embodiments of the present invention is provided to facilitate the understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and various changes may be made apparent to those skilled in the art within the spirit and scope of the present invention as defined and defined by the appended claims.
As shown in fig. 1, the thin liquid film thickness measuring device of this scheme includes upper end open-ended tank 1, the opening part of tank 1 covers has glass board 2, glass board 2 can regard as the visual window of tank 1, be provided with horizontally plate electrode 3 in the tank 1, the thin liquid film 25 of thickness of awaiting measuring sets up the upper surface at plate electrode 3, the top of plate electrode 3 is provided with vertical probe 4, be provided with dodging hole 5 on the glass board 2, probe 4 wears out and fixes setting on electron differential head 24 from dodging hole 5, electron differential head 24 is fixed to be set up on elevating gear, probe 4 and plate electrode 3 pass through wire 6 and are connected with the positive negative pole of power 7 respectively, and be provided with ampere meter 8 on the wire 6 between plate electrode 3 and the power 7.
Specifically, four upright posts 9 which are arranged in a rectangular shape are arranged in the preferable tank 1, the electrode plate 3 is movably sleeved on the four upright posts 9, external threads are arranged on the upright posts 9, and nuts 10 for fixing the electrode plate 3 are arranged on the upright posts 9 at the upper end and the lower end of the electrode plate 3; the height of the electrode plate 3 can be adjusted through the upright posts 9, the electrode plate 3 is fixed through the nuts 10, and meanwhile, the electrode plate 3 can be in a horizontal state through fine adjustment of the nuts 10, so that the thickness unevenness of the thin liquid film 25 on the electrode plate 3 caused by the inclination of the electrode plate 3 is prevented.
The lifting device comprises a hydraulic telescopic device and an oil tank 11, the hydraulic telescopic device comprises an oil cylinder 12 and a piston rod 13, an electronic differential head 24 is connected with the piston rod 13 through a support rod 14, the upper end of the piston rod 13 is provided with a counterweight block 18, an oil inlet pipeline and an oil return pipeline are arranged between the oil cylinder 12 and the oil tank 11, the oil inlet pipeline is provided with an oil delivery pump 15 and a one-way valve 17, and the oil return pipeline is provided with a switch valve 16 and a one-way valve 17; the oil in the oil tank 11 is injected into the oil cylinder 12 through the oil delivery pump 15, and the piston rod 13 is driven to ascend, so that the probe 4 ascends; when the probe 4 needs to descend, the switch valve 16 on the oil return pipeline is opened, the probe 4 and the piston rod 13 can automatically descend under the action of the self gravity and the pressure of the counterweight block 18, and the oil pressure in the oil cylinder 12 returns to the oil tank 11.
The bottom of one side of the tank 1 is provided with a wet air inlet 19, the upper end of the other side of the tank 1 is provided with a wet air outlet 20, the tank 1 is provided with a humidity detector 21, the wet air inlet 19 and the wet air outlet 20 are arranged, so that the wet air is continuously injected into the tank 1, the humidity in the tank 1 is monitored in real time by the humidity detector 21, and the thin liquid film 25 is prevented from evaporating due to the fact that the humidity in the tank 1 is too low, so that the thickness of the thin liquid film 25 is greatly changed; and the wet air inlet 19 is provided at the bottom of one side of the tank 1 to prevent the thickness of the thin liquid film 25 from being fluctuated by the wet air directly blowing to the upper surface of the electrode plate 3.
The bottom of the tank 1 is provided with a controllable electric blanket 22, and the tank 1 is provided with a thermometer 23, so that the temperature in the tank 1 can be controlled and monitored, and the influence on the uniform formation of the thickness of the thin liquid film 25 due to the temperature is prevented.
The specific measurement process of the thin liquid film thickness measurement device in the scheme is as follows: firstly, adjusting the height of the electrode plate 3 to a proper position, horizontally fixing the electrode plate 3 through a nut 10 on an upright post 9, and measuring through a level gauge to ensure that the electrode plate 3 is in a horizontal state; the humidity in the tank 1 is controlled within a proper range by introducing humid air into the tank 1 and monitoring the humidity by a humidity detector 21 in real time; the temperature in the tank box 1 is controlled in a proper range through a controllable electric blanket 22 and a thermometer 23; arranging a thin liquid film 25 with the thickness to be measured on the upper surface of the electrode plate 3, covering the glass plate 2, opening the switch valve 16 on the oil return pipeline to enable the probe 4 to gradually descend until the bottom of the probe 4 is close to the thin liquid film 25, the probe 4 is driven by the knob on the electronic differential head 24 to continue descending, until the ammeter 8 changes from zero to a certain reading, stopping immediately, wherein the ammeter 8 shows a reading indicating that the probe 4 just contacts the upper surface of the thin liquid film 25, the circuit is switched on, the reading A of the electronic differential head 24 at the moment is recorded, and then, the probe 4 is driven to continuously descend by a knob on the electronic differential head 24 until the reading of the ammeter 8 is suddenly increased, which indicates that the probe 4 is already in contact with the upper surface of the electrode plate 3, the resistance of the connected circuit is reduced, the reading of the ammeter 8 is suddenly increased, the reading B of the electronic differential head 24 at the moment is recorded, and the thickness of the thin liquid film 25 is the difference value between the reading A and the reading B.
Particularly, the probe 4 has no external load in the descending process, so that the safety of measurement is improved, if the probe 4 is forcibly driven to descend in a hydraulic mode, when the probe 4 is in contact with the electrode plate 3 and is also in misoperation of forcibly driving the probe 4 to descend, the probe 4 is easily damaged under the action of the forced load; meanwhile, according to the testing principle of the thickness of the thin liquid film 25, the thickness of the thin liquid film 25 can be measured in the upward moving process and the downward moving process of the probe 4, and due to the action of the surface tension of the thin liquid film 25, the measured value of the thickness of the thin liquid film 25 is larger when the probe 4 moves upward than when the probe moves downward, so that the measured value of the probe 4 moves upward is larger than the actual value, therefore, the measured value of the probe 4 moves downward is adopted in the scheme when the thickness is measured, and the measuring accuracy is improved by a method of measuring for multiple times and obtaining an average value.
In conclusion, the thin liquid film thickness measuring device is simple in structure and convenient to operate, and the thickness of the thin liquid film 25 can be accurately measured through the matching of the probe 4 and the electrode plate 3; meanwhile, the temperature and the humidity in the measuring environment are controllable, and the influence on the thickness of the thin liquid film 25 caused by the change of the temperature and the humidity is eliminated.
Claims (8)
1. The utility model provides a thin liquid film thickness measurement device, its characterized in that, includes upper end open-ended groove case (1), the opening part of groove case (1) covers has glass board (2), be provided with horizontally plate electrode (3) in groove case (1), the top of plate electrode (3) is provided with vertical probe (4), be provided with on glass board (2) and dodge hole (5), probe (4) are worn out and fixed the setting on the spiral micrometer head from dodging hole (5), the spiral micrometer head is fixed to be set up on elevating gear, probe (4) and plate electrode (3) are connected with the positive negative pole of power (7) respectively through wire (6), and are provided with ampere meter (8) on wire (6).
2. The thin liquid film thickness measuring device according to claim 1, wherein four upright posts (9) are arranged in a rectangular shape in the tank (1), the electrode plate (3) is sleeved on the four upright posts (9) at the same time, the upright posts (9) are provided with external threads, and nuts (10) for fixing the electrode plate (3) are arranged on the upright posts (9) at the upper end and the lower end of the electrode plate (3).
3. The thin liquid film thickness measuring device according to claim 1, wherein the lifting device comprises a hydraulic telescopic device and an oil tank (11), the hydraulic telescopic device comprises an oil cylinder (12) and a piston rod (13), the micrometer screw head is connected with the piston rod (13) through a support rod (14), an oil inlet pipeline and an oil return pipeline are arranged between the oil cylinder (12) and the oil tank (11), an oil transfer pump (15) is arranged on the oil inlet pipeline, and a switch valve (16) is arranged on the oil return pipeline.
4. The thin liquid film thickness measuring device according to claim 3, wherein a check valve (17) is arranged on each of the oil inlet pipeline and the oil return pipeline.
5. The thin liquid film thickness measuring device according to claim 3, wherein the upper end of the piston rod (13) is provided with a weight block (18).
6. The thin liquid film thickness measuring device according to claim 1, wherein a wet air inlet (19) is provided at a bottom of one side of the tank (1), a wet air outlet (20) is provided at an upper end of the other side of the tank (1), and a humidity detector (21) is provided on the tank (1).
7. The thin liquid film thickness measuring device according to claim 1, wherein a controllable electric blanket (22) is provided at the bottom of the tank (1), and a thermometer (23) is provided on the tank (1).
8. The thin liquid film thickness measuring device according to claim 1, wherein the micrometer screw head is a rotary electronic micrometer head (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220767062.5U CN217210728U (en) | 2022-03-31 | 2022-03-31 | Thin liquid film thickness measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220767062.5U CN217210728U (en) | 2022-03-31 | 2022-03-31 | Thin liquid film thickness measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217210728U true CN217210728U (en) | 2022-08-16 |
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ID=82759653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220767062.5U Expired - Fee Related CN217210728U (en) | 2022-03-31 | 2022-03-31 | Thin liquid film thickness measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217210728U (en) |
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2022
- 2022-03-31 CN CN202220767062.5U patent/CN217210728U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220816 |
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| CF01 | Termination of patent right due to non-payment of annual fee |