CN117269258B - Calibrating device of oil water sensor - Google Patents
Calibrating device of oil water sensor Download PDFInfo
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- CN117269258B CN117269258B CN202311532064.1A CN202311532064A CN117269258B CN 117269258 B CN117269258 B CN 117269258B CN 202311532064 A CN202311532064 A CN 202311532064A CN 117269258 B CN117269258 B CN 117269258B
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- 230000007246 mechanism Effects 0.000 claims abstract description 69
- 239000012530 fluid Substances 0.000 claims abstract description 23
- 230000020347 spindle assembly Effects 0.000 claims abstract description 23
- 229920006395 saturated elastomer Polymers 0.000 claims abstract description 7
- 238000004140 cleaning Methods 0.000 claims description 53
- 238000002347 injection Methods 0.000 claims description 46
- 239000007924 injection Substances 0.000 claims description 46
- 238000001035 drying Methods 0.000 claims description 41
- 238000003860 storage Methods 0.000 claims description 37
- 238000005507 spraying Methods 0.000 claims description 14
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- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 2
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- 239000003570 air Substances 0.000 description 1
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- 238000012864 cross contamination Methods 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 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
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/22—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance
- G01N27/223—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance for determining moisture content, e.g. humidity
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- General Health & Medical Sciences (AREA)
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Abstract
The application provides a calibrating device of fluid moisture sensor, including casing, spindle unit and calibrating mechanism. The shell is provided with an assembly port for carrying an oil water sensor; the main shaft assembly is provided with a plurality of assembly positions for carrying the oil water sensors, and is rotatably connected in the shell and used for switching the oil water sensors to be calibrated; the calibration mechanism is positioned below the spindle assembly and is used for providing various calibration liquids with saturated solubility; the main shaft assembly is used for driving the oil liquid moisture sensor to be calibrated to be immersed into the calibration liquid of the calibration mechanism, and the calibration is carried out according to the measured value of the oil liquid moisture sensor. And on the premise that the capacitance values of various calibration liquids are known, comparing the measured value of the oil-liquid water sensor with the known value, and if the comparison between the measured value of the oil-liquid water sensor and the known value is different, correcting the measured value to the known value and writing the corrected value into the oil-liquid water sensor, thereby completing the calibration of the oil-liquid water sensor.
Description
Technical Field
The application belongs to the technical field of moisture sensors, and more particularly relates to a calibrating device of an oil moisture sensor.
Background
The water sensor is a sensor for accurately measuring the water content in a liquid and is widely used in hydraulic systems and other industrial applications. In order to detect the moisture content in the oil so as to ensure the quality and performance of the oil, an oil moisture sensor special for the moisture content of the oil is derived.
The oil water content sensor mainly adopts a capacitance method to measure. The existence of moisture in the oil liquid can change the dielectric constant of the capacitor, so that the capacitance value is changed. By accurately measuring the change in capacitance, we can indirectly measure the moisture content. However, there are some challenges in practical applications.
Because the oil liquid moisture sensor is packaged and shaped when leaving the factory, the oil liquid moisture sensor is possibly influenced by factors such as manufacturing errors, electrode pollution and the like after replacement or use, and the consistency of the measurement precision of each oil liquid moisture sensor is difficult to ensure. Therefore, the calibration work of the oil water sensor is very important.
Unfortunately, calibration equipment specific to oil moisture sensors is currently lacking. Neither the manufacturer of the oil-water sensor nor the oil-water sensor installed in the industrial site has an applicable method or device for calibrating the oil-water sensor. This results in failure to ensure consistency of detection accuracy and detection data of the oil water sensor in each use link.
Disclosure of Invention
An object of the embodiment of the application is to provide a calibrating device of fluid moisture sensor to solve the technical problem that the fluid moisture sensor that exists among the prior art is difficult to calibrate.
In order to achieve the above purpose, the technical scheme adopted in the application is as follows:
provided is a calibration device for an oil water sensor, comprising:
a housing having an assembly port for mounting an oil-water sensor;
the main shaft assembly is provided with a plurality of assembly positions for carrying the oil water sensor, the main shaft assembly is rotatably connected in the shell and used for switching the oil water sensor to be calibrated, the main shaft assembly comprises a main shaft body and a plurality of telescopic pieces, the telescopic pieces are connected with the main shaft body in a telescopic manner, and the oil water sensor is carried on the telescopic pieces;
a calibration mechanism positioned below the spindle assembly, the calibration mechanism being configured to provide a plurality of calibration fluids having saturated solubilities;
the main shaft assembly is used for driving the oil liquid moisture sensor to be calibrated to be immersed into the calibration liquid of the calibration mechanism, and calibrating the capacitance value measured by the oil liquid moisture sensor according to the capacitance value of the calibration liquid.
As a further improvement of the above technical scheme:
optionally, the calibration mechanism comprises a calibration base, a liquid storage vessel and a liquid injection assembly, wherein the calibration base is positioned below the spindle assembly, and the calibration base is provided with a chute arranged along the transverse direction; the liquid storage dishes are in a plurality, and are slidably connected to the sliding grooves; the liquid injection assembly comprises a liquid injection part and a telescopic driving part in driving connection with the liquid injection part, wherein the telescopic driving part is used for driving the liquid injection part to extend into the liquid storage vessel, so that the liquid injection part injects calibration liquid into the liquid storage vessel.
Optionally, the number of the liquid injection components is multiple, each liquid injection component is used for injecting corresponding calibration liquid, and each liquid injection component is slidably connected to the calibration base; the liquid injection assembly further comprises a sliding driving piece, and the sliding driving piece is used for driving each liquid injection assembly to slide on the calibration base.
Optionally, the calibration mechanism further includes a liquid storage dish driving assembly, and the liquid storage dish driving assembly is used for driving the liquid storage dish to move from the first end of the chute to the second end of the chute.
Optionally, the main shaft body includes a movable shaft, a shaft seat and a main shaft driving member, the movable shaft is rotatably connected to the shaft seat, the main shaft driving member is in driving connection with the movable shaft, and each telescopic member is arranged on the movable shaft at intervals around a rotation axis of the movable shaft.
Optionally, the main shaft assembly further includes a conductive member, a first end of the conductive member is disposed on the telescopic member and is electrically connected to the oil water sensor, a second end of the conductive member is disposed on the movable shaft, and the second end of the conductive member has an elastic connection terminal; the shaft seat is provided with a fixed connection terminal; when the movable shaft rotates, the elastic connecting terminal is separated from the fixed connecting terminal; when the oil water sensor is calibrated, the elastic connecting terminal is electrically connected with the fixed connecting terminal.
Optionally, the liquid storage dish includes the veneer piece and has first opening and second opening's liquid storage chamber, first opening is used for the fluid moisture sensor stretches into in the liquid storage chamber, the second opening is used for annotate the liquid subassembly and stab to in the liquid storage chamber, the veneer piece connect in second opening part.
Optionally, the device comprises a cleaning mechanism, wherein the cleaning mechanism is connected to the shell and is used for cleaning the oil water sensor;
the cleaning mechanism comprises a liquid spraying piece, a liquid discharging piece and a cleaning cavity, the cleaning cavity is provided with a first through hole communicated with the shell, and the oil water sensor extends into the cleaning cavity through the first through hole; the liquid spraying piece is used for spraying cleaning liquid towards the oil liquid moisture sensor; the liquid draining piece is used for draining the cleaning liquid in the cleaning cavity.
Optionally, the device comprises a drying mechanism, wherein the drying mechanism is connected to the shell and is used for drying the cleaned oil water sensor;
the drying mechanism comprises an air injection piece, a one-way exhaust piece and a drying cavity, the drying cavity is provided with a second through hole communicated with the shell, and the oil water sensor extends into the drying cavity through the second through hole; the air injection piece is used for injecting dry gas towards the oil water content sensor; the one-way exhaust piece is used for exhausting the gas in the drying cavity.
Optionally, the cleaning mechanism, the drying mechanism and the calibration mechanism are sequentially arranged at intervals around the rotating shaft of the spindle assembly, and the spindle assembly drives the oil water sensor to sequentially pass through the calibration mechanism, the cleaning mechanism and the drying mechanism.
The application provides a calibrating device of fluid moisture sensor's beneficial effect lies in:
the application provides a calibrating device of fluid moisture sensor, including casing, spindle unit and calibrating mechanism. The shell is provided with an assembly port for carrying an oil water sensor; the main shaft assembly is provided with a plurality of assembly positions for carrying the oil water sensors, and is rotatably connected in the shell and used for switching the oil water sensors to be calibrated; the main shaft assembly comprises a main shaft body and a plurality of telescopic members, the telescopic members are connected to the main shaft body in a telescopic manner, and the oil-water sensor is carried on the telescopic members. The main shaft assembly can be provided with one oil-liquid moisture sensor or a plurality of oil-liquid moisture sensors for calibration. The oil water sensor can be switched correspondingly to calibrate by controlling the rotation of the main shaft assembly.
The calibration mechanism is positioned below the spindle assembly and is used for providing various calibration liquids with saturated solubility; the main shaft assembly is used for driving the oil liquid moisture sensor to be calibrated to be immersed into the calibration liquid of the calibration mechanism, and the calibration is carried out according to the measured value of the oil liquid moisture sensor. And on the premise that the capacitance values of various calibration liquids are known, comparing the measured value of the oil-liquid water sensor with the known value, and if the comparison between the measured value of the oil-liquid water sensor and the known value is different, correcting the measured value to the known value and writing the corrected value into the oil-liquid water sensor, thereby completing the calibration of the oil-liquid water sensor.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following description will briefly introduce the drawings that are needed in the embodiments or the description of the prior art, it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic cross-sectional view of a calibration device for an oil water sensor provided in the present application;
FIG. 2 is a schematic diagram of a front view of a calibration device for an oil water sensor according to the present disclosure;
FIG. 3 is a schematic perspective view of a calibration device of an oil water sensor according to the present disclosure;
FIG. 4 is a schematic diagram of a cross-sectional structure of a calibration device for an oil water sensor according to the present disclosure;
FIG. 5 is a schematic diagram III of a cross-sectional structure of a calibration device for an oil water sensor provided by the present application;
FIG. 6 is a schematic diagram of a part of the enlarged structure of FIG. 1;
FIG. 7 is a schematic diagram of a part of the enlarged structure of FIG. 1;
FIG. 8 is a schematic view of a partial enlarged structure of a calibration device of an oil water sensor provided by the present application;
FIG. 9 is a schematic cross-sectional view of a reservoir of the calibration device of the oil moisture sensor provided herein;
fig. 10 is a schematic perspective view of an oil water sensor.
Wherein, each reference sign in the figure:
1. a housing; 11. an assembly port; 12. a buckle cover; 2. a spindle assembly; 21. a main shaft body; 211. a movable shaft; 212. a shaft seat; 213. a spindle drive; 214. fixing the connecting terminal; 215. a vent; 22. a telescoping member; 23. a conductive member; 231. an elastic connection terminal; 3. a calibration mechanism; 31. calibrating the base; 311. a chute; 32. a liquid storage vessel; 321. a veneer sheet; 322. a first opening; 323. a second opening; 324. a liquid storage cavity; 33. a liquid injection assembly; 331. a liquid injection member; 332. a telescopic driving member; 333. a slip driving member; 34. a reservoir drive assembly; 341. a drive belt; 342. a driving wheel; 343. a baffle; 35. collecting a dish; 4. an oil water sensor; 5. a cleaning mechanism; 51. a liquid spraying member; 52. a liquid discharge member; 53. cleaning the cavity; 6. a drying mechanism; 61. an air jet member; 62. a one-way exhaust member; 63. and drying the cavity.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved by the present application more clear, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.
It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present application and simplify description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore should not be construed as limiting the present application.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
The oil water sensor is a sensor which is specially used for detecting the water content in oil. Because the oil liquid moisture sensor is packaged and shaped when leaving the factory, the oil liquid moisture sensor is possibly influenced by factors such as manufacturing errors, electrode pollution and the like after replacement or use, and the consistency of the measurement precision of each oil liquid moisture sensor is difficult to ensure. Therefore, the calibration work of the oil water sensor is very important.
Unfortunately, calibration equipment specific to oil moisture sensors is currently lacking. Neither the manufacturer of the oil-water sensor nor the oil-water sensor installed in the industrial site has an applicable method or device for calibrating the oil-water sensor. This results in failure to ensure consistency of detection accuracy and detection data of the oil water sensor in each use link.
The core of the scheme is that the oil-liquid moisture sensor is respectively used for measuring various calibration liquids with known capacitance values, and the oil-liquid moisture sensor is corrected according to the measured value of the oil-liquid moisture sensor and the standard capacitance value of the calibration liquid, so that the oil-liquid moisture sensor is conveniently and effectively calibrated. Because the calibrating device of this application is based on the change of capacitance value and carries out the calibration to fluid moisture sensor, consequently, the calibrating device of fluid moisture sensor of this application is applicable to the calibration of capacitive fluid moisture sensor. See the following description for detailed description.
As shown in fig. 1 to 3 and fig. 10, the calibrating device for an oil water sensor provided by the invention comprises a shell 1, a spindle assembly 2 and a calibrating mechanism 3. The housing 1 has an assembly port 11 for mounting the oil water sensor 4;
wherein, casing 1 is the shell of main shaft subassembly 2 for the outside environment that insulates, prevent outside moisture and dust etc. from interfering the measurement of fluid moisture sensor 4. In use, the oil moisture sensor 4 is mounted to the spindle assembly 2 through the mounting port 11 in the housing 1. The assembly port 11 is provided with a detachable buckle cover 12, and when the oil water sensor 4 is carried or taken out, the buckle cover 12 is opened, and the assembly port 11 is opened; when the calibration device works, the buckle cover 12 is closed, and the assembly port 11 is closed. The design is convenient for installing and taking out the oil water sensor 4, and ensures that the oil water sensor 4 is not interfered by the outside in the calibration working process.
The main shaft assembly 2 is provided with a plurality of assembly positions for carrying the oil water content sensor 4, and the main shaft assembly 2 is rotatably connected in the shell 1 and is used for switching the oil water content sensor 4 to be calibrated; the main shaft assembly 2 includes a main shaft body 21 and a plurality of telescopic members 22, the telescopic members 22 being telescopically coupled to the main shaft body 21, and the oil-water sensor 4 being mounted on the telescopic members 22.
The spindle assembly 2 can be provided with one oil water sensor 4 or a plurality of oil water sensors 4 for calibration. By controlling the rotation of the spindle assembly 2, the corresponding oil water sensor 4 can be switched for calibration. In order to avoid interference between the oil moisture sensor 4 and the housing 1 when the spindle assembly 2 rotates, the oil moisture sensor 4 is mounted on the telescopic member 22, and when the oil moisture sensor 4 is mounted or taken out, the telescopic member 22 extends out of the spindle body 21, so that the oil moisture sensor 4 can be conveniently mounted on the telescopic member 22 through the assembly port 11, or the oil moisture sensor 4 can be conveniently removed from the telescopic member 22 through the assembly port 11. When the main shaft assembly 2 rotates, the telescopic piece 22 is retracted into the main shaft body 21, so that the oil water sensor 4 is far away from the shell 1, and the oil water sensor 4 is prevented from colliding with the shell 1. This design ensures both proper installation and calibration of the oil moisture sensor 4 and improves the safety and stability of the overall device.
The calibration mechanism 3 is positioned below the spindle assembly 2, and the calibration mechanism 3 is used for providing various calibration liquids with saturated solubility; the spindle assembly 2 is used for driving the oil water sensor 4 to be calibrated to be immersed in the calibration liquid of the calibration mechanism 3, and the calibration is carried out according to the measured value of the oil water sensor 4.
Because the solubility of the solute in the solvent is always constant at a certain temperature, the capacitance value of the calibration solution in a saturated state is also constant, and the capacitance value of the calibration solution in the saturated state can be obtained by a table lookup method and an experimental method; therefore, the capacitance value measured by the oil water content sensor 4 can be calibrated based on the capacitance value of the calibration liquid. The calibration solution is a saturated solution prepared in advance, and has different capacitance values according to different solutes. On the premise that the capacitance values of various calibration liquids are known, comparing the measured value of the oil-liquid moisture sensor 4 with the known value, if the comparison between the measured value of the oil-liquid moisture sensor 4 and the known value is different, correcting the measured value to the known value, and writing the corrected value into the oil-liquid moisture sensor 4, thereby completing the calibration of the oil-liquid moisture sensor 4.
As shown in fig. 1 to 3, in one embodiment of the present application, the calibration mechanism 3 includes a calibration base 31, a reservoir 32 for holding a corresponding calibration fluid, and a fluid injection assembly 33 for injecting the calibration fluid.
The number of the liquid storage dishes 32 is plural, so that the calibration mechanism 3 can provide various calibration liquids to calibrate the oil water sensor 4, and ensure that the oil water sensor 4 can accurately measure in various solutions.
The calibration pedestal 31 is positioned below the spindle assembly 2, and the calibration pedestal 31 is provided with a chute 311 which is arranged along the transverse direction; the liquid storage vessel 32 is slidably connected to the chute 311; by sliding the liquid storage vessel 32 on the sliding groove 311, the liquid storage vessel 32 containing the corresponding calibration liquid can be moved to the position right below the oil water sensor 4, so that the oil water sensor 4 is ready for immersion.
The liquid injection assembly 33 includes a liquid injection part 331 and a telescopic driving part 332 in driving connection with the liquid injection part 331, wherein the telescopic driving part 332 is used for driving the liquid injection part 331 to extend into the liquid storage vessel 32, so that the liquid injection part 331 injects the calibration liquid into the liquid storage vessel 32.
The filling member 331 fills the corresponding liquid storage vessel 32 with the prepared calibration liquid. When the liquid storage container 32 moves on the chute 311, the telescopic driving member 332 drives the liquid storage container 32 to separate from the liquid storage container 32 in order to avoid interference of the liquid storage container 32 by the liquid filling member 331. When the filling member 331 fills the corresponding liquid storage vessel 32 with the calibration liquid, the telescopic driving member 332 drives the filling member 331 to extend into the corresponding liquid storage vessel 32. The specific form of the telescopic drive 332 may be selected according to practical needs, such as a hydraulic/pneumatic cylinder, an electric push rod, a screw nut mechanism, etc. The liquid injection member 331 is specifically a syringe or the like.
As shown in fig. 1 and 4, in one embodiment of the present application, in order to solve the problem that when a plurality of calibration liquids are injected, the calibration liquid is contaminated due to sharing one liquid injection assembly 33, the calibration device of the present application provides a plurality of liquid injection assemblies 33, and each liquid injection assembly 33 is used for injecting the corresponding calibration liquid.
Each of the liquid injection assemblies 33 is slidably connected to the calibration base 31 such that each of the liquid injection assemblies 33 can be precisely moved to its corresponding liquid reservoir 32 and precisely inject the desired calibration liquid into the liquid reservoir 32. The design not only improves the accuracy of injection, but also avoids cross contamination between calibration solutions.
In addition, the pipetting assemblies 33 are further provided with a slide drive 333, the slide drive 333 being used to drive each pipetting assembly 33 to slide on the calibration base 31. The specific form of the slip drive 333 may be selected according to actual needs, such as a hydraulic/pneumatic cylinder, an electric push rod, a screw nut mechanism, etc.
As shown in fig. 1 and 5, in one embodiment of the present application, the calibration mechanism 3 further includes a reservoir driving assembly 34, and the reservoir driving assembly 34 is configured to drive the reservoir 32 to move from the first end of the chute 311 to the second end of the chute 311.
The reservoir driving assembly 34 is configured to drive the corresponding reservoir 32 to move directly under the oil moisture sensor 4 to be calibrated, and move the used reservoir 32 toward the second end of the chute 311. The liquid storage dish driving assembly 34 specifically comprises a driving belt 341, a driving wheel 342 and a baffle 343; wherein the driving wheel 342 is driven by a servo motor or a stepping motor, etc. The driving belt 341 is sleeved on the driving wheel 342, and the driving wheel 342 drives the driving belt 341 to rotate through friction between the driving belt 341 and the driving wheel 342. The flap 343 is connected to the outside of the driving belt 341 so that the driving belt 341 rotates. The driving plate 343 pushes the liquid storage container 32 to drive the liquid storage container 32 to move on the sliding slot 311.
As shown in fig. 2 and 3, in one embodiment of the present application, the second end of chute 311 is provided with a collection dish 35. The liquid storage vessel 32 slides out of the second end of the chute 311 and falls into the collection vessel 35. The collection dish 35 is used to collect the used calibration fluid and the reservoir 32.
As shown in fig. 1, 4 and 8, in one embodiment of the present application, the main shaft body 21 includes a movable shaft 211, a shaft seat 212, and a main shaft driving member 213, the movable shaft 211 being rotatably connected to the shaft seat 212, the main shaft driving member 213 being drivingly connected to the movable shaft 211, the respective telescopic members 22 being disposed on the movable shaft 211 at intervals from each other about the rotation axis of the movable shaft 211.
The spindle driver 213 is specifically a servo motor, a stepping motor, or the like. The main shaft driving piece 213 drives the movable shaft 211 to rotate on the shaft seat 212 so as to switch different oil water sensors 4 for calibration. As shown in fig. 1, the X axis is a rotation axis of the movable shaft 211, two ends of the movable shaft 211 along the Y axis and the Z axis are sequentially and respectively provided with four telescopic members 22, and the spindle assembly 2 can simultaneously carry four oil water sensors 4 for calibration.
As shown in fig. 1, 4 and 8, in one embodiment of the present application, the spindle assembly 2 further includes a conductive member 23, a first end of the conductive member 23 is disposed on the telescopic member 22 and is used for electrically connecting with the oil moisture sensor 4, a second end of the conductive member 23 is disposed on the movable shaft 211, and a second end of the conductive member 23 has an elastic connection terminal 231; the shaft seat 212 is provided with a fixed connection terminal 214; when the movable shaft 211 rotates, the elastic connection terminal 231 is separated from the fixed connection terminal 214; when the oil water sensor 4 is calibrated, the elastic connection terminal 231 is electrically connected to the fixed connection terminal 214.
The conductive member 23 is specifically a wire having a connection terminal. When the oil moisture sensor 4 is inserted onto the telescopic member 22, the first end of the conductive member 23 is electrically connected to the oil moisture sensor 4. Since the movable shaft 211 is relatively moved between the movable shaft 211 and the shaft seat 212 when rotated, the shearing action is generated on the common wire passing through between the movable shaft 211 and the shaft seat 212. It is difficult for a conventional wire to conduct an electrical signal from the first end of the conductive member 23 through the shaft receptacle 212 to the terminal. To solve this problem, the inventor has provided an elastic connection terminal 231 at the second end of the conductive member 23, and the elastic connection terminal 231, that is, the spring pin, is an elastically stretchable and conductive electrical connection terminal. When the movable shaft 211 rotates, the elastic connection terminal 231 may be elastically contracted to avoid being broken by a shearing force; after the movable shaft 211 is in place, the elastic connection terminal 231 may elastically protrude and return to electrical connection with the fixed connection terminal 214. When the movable shaft 211 is rotated to put the oil moisture sensor 4 to be calibrated in place, the elastic connection terminal 231 is electrically connected with the fixed connection terminal 214, thereby achieving communication with the oil moisture sensor 4.
As shown in fig. 1 and 8, in one embodiment of the present application, the expansion member 22 is embodied as a pneumatic piston that is telescopically coupled to a pneumatic cylinder of the movable shaft 211. This design allows the telescoping member 22 to telescope through changes in air pressure, thereby driving the oil moisture sensor 4 to telescope on the spindle assembly 2.
The movable shaft 211 and the shaft seat 212 are respectively provided with an air vent 215, and when the movable shaft 211 rotates to be aligned with the air vents 215 on the shaft seat 212, the telescopic driving of the telescopic piece 22 can be realized by inputting positive pressure/negative pressure air. This way of inputting pressurized gas through the vent 215 allows precise control of the amount of telescoping of the telescoping member 22, thereby ensuring accuracy and stability of calibration.
As shown in fig. 1 and 9, in one embodiment of the present application, the liquid reservoir 32 includes a glue separator 321 and a liquid reservoir chamber 324 having a first opening 322 and a second opening 323, the first opening 322 is used for the oil water sensor 4 to extend into the liquid reservoir chamber 324, the second opening 323 is used for the injection component 33 to penetrate into the liquid reservoir chamber 324, and the glue separator 321 is connected to the second opening 323.
The first opening 322 is located at the top of the liquid storage vessel 32, and the oil water sensor 4 extends from right above the first opening 322 into the liquid storage cavity 324 through the first opening 322; in contrast, the second opening 323 is located at the bottom of the reservoir 32, and the injection assembly 33 pierces into the reservoir 324 from below the second opening 323. The septum 321 is used for stopping the second opening 323 to prevent the calibration fluid in the reservoir 324 from leaking out. Such a septum 321 is a film that can be pierced and can elastically close a wound. The septum 321 is pierced by the injection assembly 33 and calibration fluid is injected into the reservoir 324. After the priming member 33 is withdrawn, the septum 321 resiliently closes the wound, thereby preventing the calibration fluid from leaking out of the reservoir 324. The spacer 321 may be made of rubber, silica gel, or other materials.
Since the oil moisture sensor 4 needs to be immersed in a different calibration fluid. To avoid contamination of one calibration fluid by another calibration fluid adhering to the oil-water sensor 4 and to avoid interference with the measurement of the oil-water sensor 4, the oil-water sensor 4 needs to be cleaned before the oil-water sensor 4 is immersed in the next calibration fluid.
As shown in fig. 1 and 7, in one embodiment of the present application, the calibration device further includes a cleaning mechanism 5, where the cleaning mechanism 5 is connected to the housing 1, and the cleaning mechanism 5 is used for cleaning the oil moisture sensor 4; the cleaning mechanism 5 comprises a liquid spraying piece 51, a liquid discharging piece 52 and a cleaning cavity 53, wherein the cleaning cavity 53 is provided with a first through hole communicated with the shell 1, and the oil water sensor 4 extends into the cleaning cavity 53 through the first through hole; the liquid spraying member 51 is for spraying the cleaning liquid toward the oil-liquid moisture sensor 4; the drain 52 is used for draining the cleaning liquid in the cleaning chamber 53.
The liquid ejecting member 51 is specifically a cleaning liquid nozzle or the like. One end of the liquid spraying piece 51 is connected with a cleaning liquid pump through a liquid conveying pipe, and the other end of the liquid spraying piece 51 faces the oil water content sensor 4 extending into the cleaning cavity 53. When the cleaning liquid pump works, after the cleaning liquid is pressurized, the cleaning liquid pump washes the oil water sensor 4 through the liquid spraying piece 51 so as to thoroughly remove the calibration liquid adhered on the oil water sensor 4. The cleaning liquid is specifically ultrapure water or deionized water, etc. To prevent the cleaning liquid from accumulating in the cleaning chamber 53, the used cleaning liquid is discharged from the cleaning chamber 53 through the liquid discharging member 52, and the liquid discharging member 52 is specifically a liquid discharging nozzle or the like.
In order to avoid contamination of the seed calibration liquid by the cleaning liquid adhered to the oil moisture sensor 4 and to avoid interference with the measurement of the oil moisture sensor 4, it is necessary to dry the oil moisture sensor 4 before the oil moisture sensor 4 is immersed in the calibration liquid.
As shown in fig. 1 and 6, in one embodiment of the present application, the calibration device of the present application further includes a drying mechanism 6, where the drying mechanism 6 is connected to the housing 1, and the drying mechanism 6 is used for drying the cleaned oil moisture sensor 4; the drying mechanism 6 comprises an air injection piece 61, a one-way exhaust piece 62 and a drying cavity 63, the drying cavity 63 is provided with a second through hole communicated with the shell 1, and the oil water sensor 4 extends into the drying cavity 63 through the second through hole; the air jet member 61 is used for jetting the dry air towards the oil water content sensor 4; the one-way exhaust 62 is used to exhaust the gas in the drying chamber 63.
The air jet member 61 is specifically a dry air nozzle or the like. One end of the air injection piece 61 is connected with the high-pressure air pump through an air pipe, and the other end of the air injection piece 61 faces the oil water sensor 4 extending into the drying cavity 63. In operation, the high-pressure air pump pressurizes the clean dry gas and then sprays and dries the oil water sensor 4 through the air spraying piece 61 so as to thoroughly remove the cleaning liquid on the oil water sensor 4. The drying gas can be air, nitrogen, carbon dioxide and the like after filtration and dust removal. To prevent the air pressure in the drying chamber 63 from rising, the air in the drying chamber 63 is discharged out of the drying chamber 63 through the one-way air discharge member 62, and the one-way air discharge member 62 is specifically a one-way air discharge valve mounted on the drying chamber 63.
As shown in fig. 1, in one embodiment of the present application, the cleaning mechanism 5, the drying mechanism 6 and the calibration mechanism 3 are sequentially arranged at intervals around the rotation axis of the spindle assembly 2, and the spindle assembly 2 can drive the oil moisture sensor 4 to sequentially pass through the calibration mechanism 3, the cleaning mechanism 5 and the drying mechanism 6 when rotating.
The layout mode can effectively realize the operations of cleaning, drying, calibrating and the like, and can save space, so that the whole device is more compact and easy to operate; in addition, the working efficiency of the calibrating device can be improved, and the oil water sensor 4 can pass through all operating mechanisms in the calibrating device at one time, so that the operating time is shortened.
The oil liquid moisture sensor calibration device can realize that a plurality of oil liquid moisture sensors 4 calibrate in the same kind of calibration liquid, also can let a plurality of oil liquid moisture sensors 4 calibrate in different kinds of calibration liquid, can also let single oil liquid moisture sensor 4 calibrate in different kinds of calibration liquid. The specific working mode can be selected according to the actual situation.
The calibrating device has high flexibility and convenience, and can meet the requirements of different users. By using the device, the calibration efficiency and the calibration precision of the oil water sensor can be greatly improved, so that the quality and the safety of oil are better ensured. In addition, the device can also adjust the types and the quantity of the calibration liquid according to actual needs so as to adapt to different application scenes and requirements.
In a word, the oil water sensor calibration device has high practical value and wide application prospect, and can provide powerful technical support for development of related fields.
The foregoing description of the preferred embodiments of the present application is not intended to be limiting, but is intended to cover any and all modifications, equivalents, and alternatives falling within the spirit and principles of the present application.
Claims (8)
1. A calibration device for an oil moisture sensor, comprising:
a housing (1) having an assembly port (11) for mounting an oil-water sensor (4);
the main shaft assembly (2) is provided with a plurality of assembling positions for carrying the oil water sensor (4), the main shaft assembly (2) is rotatably connected in the shell (1) and used for switching the oil water sensor (4) to be calibrated, the main shaft assembly (2) comprises a main shaft body (21) and a plurality of telescopic pieces (22), the telescopic pieces (22) are telescopically connected with the main shaft body (21), and the oil water sensor (4) is carried in the telescopic pieces (22);
a calibration mechanism (3) located below the spindle assembly (2), the calibration mechanism (3) being configured to provide a plurality of calibration liquids having saturated solubilities;
the main shaft assembly (2) is used for driving the oil water sensor (4) to be calibrated to be immersed into the calibration liquid of the calibration mechanism (3), and calibrating the capacitance value measured by the oil water sensor (4) according to the capacitance value of the calibration liquid;
the main shaft body (21) comprises a movable shaft (211), a shaft seat (212) and a main shaft driving piece (213), wherein the movable shaft (211) is rotatably connected to the shaft seat (212), the main shaft driving piece (213) is in driving connection with the movable shaft (211), and the telescopic pieces (22) are arranged on the movable shaft (211) at intervals around the rotating shaft of the movable shaft (211);
the main shaft assembly (2) further comprises a conductive piece (23), a first end of the conductive piece (23) is arranged on the telescopic piece (22) and is used for being electrically connected with the oil water sensor (4), a second end of the conductive piece (23) is arranged on the movable shaft (211), and an elastic connecting terminal (231) is arranged at the second end of the conductive piece (23); the shaft seat (212) is provided with a fixed connection terminal (214); when the movable shaft (211) rotates, the elastic connection terminal (231) is separated from the fixed connection terminal (214); when the oil water sensor (4) is calibrated, the elastic connecting terminal (231) is electrically connected with the fixed connecting terminal (214).
2. The calibrating device of the oil water sensor according to claim 1, characterized in that the calibrating mechanism (3) comprises a calibrating base (31), a liquid storage vessel (32) and a liquid injection assembly (33), the calibrating base (31) is positioned below the main shaft assembly (2), and a chute (311) which is arranged along the transverse direction is arranged on the calibrating base (31); the number of the liquid storage dishes (32) is multiple, and the liquid storage dishes (32) are slidably connected to the sliding groove (311); the liquid injection assembly (33) comprises a liquid injection piece (331) and a telescopic driving piece (332) in driving connection with the liquid injection piece (331), wherein the telescopic driving piece (332) is used for driving the liquid injection piece (331) to extend into the liquid storage dish (32), so that the liquid injection piece (331) injects calibration liquid into the liquid storage dish (32).
3. The calibration device of an oil water sensor according to claim 2, wherein the number of the injection assemblies (33) is plural, each injection assembly (33) is used for injecting a corresponding calibration fluid, and each injection assembly (33) is slidably connected to the calibration base (31); the priming assemblies (33) further include a slip drive (333), the slip drive (333) being configured to drive each of the priming assemblies (33) to slip on the calibration base (31).
4. The oil moisture sensor calibration device according to claim 2, wherein the calibration mechanism (3) further comprises a reservoir driving assembly (34), the reservoir driving assembly (34) being configured to drive the reservoir (32) to move from the first end of the chute (311) to the second end of the chute (311).
5. The calibration device of an oil moisture sensor according to claim 2, characterized in that the reservoir (32) comprises a glue separator (321) and a reservoir chamber (324) with a first opening (322) and a second opening (323), the first opening (322) being used for the oil moisture sensor (4) to extend into the reservoir chamber (324), the second opening (323) being used for the injection assembly (33) to penetrate into the reservoir chamber (324), the glue separator (321) being connected at the second opening (323).
6. The calibrating device of an oil water sensor according to claim 1, comprising a cleaning mechanism (5), said cleaning mechanism (5) being connected to said housing (1), said cleaning mechanism (5) being adapted to clean said oil water sensor (4);
the cleaning mechanism (5) comprises a liquid spraying piece (51), a liquid discharging piece (52) and a cleaning cavity (53), the cleaning cavity (53) is provided with a first through hole communicated with the shell (1), and the oil water sensor (4) stretches into the cleaning cavity (53) through the first through hole; the liquid spraying piece (51) is used for spraying cleaning liquid towards the oil water content sensor (4); the liquid draining member (52) is used for draining the cleaning liquid in the cleaning cavity (53).
7. The calibrating device of an oil moisture sensor according to claim 6, characterized by comprising a drying mechanism (6), said drying mechanism (6) being connected to said housing (1), said drying mechanism (6) being used for drying said cleaned oil moisture sensor (4);
the drying mechanism (6) comprises an air injection piece (61), a one-way exhaust piece (62) and a drying cavity (63), the drying cavity (63) is provided with a second through hole communicated with the shell (1), and the oil water sensor (4) stretches into the drying cavity (63) through the second through hole; the air injection piece (61) is used for injecting dry air towards the oil water content sensor (4); the one-way exhaust piece (62) is used for exhausting the gas in the drying cavity (63).
8. The calibrating device for the oil water sensor according to claim 7, wherein the cleaning mechanism (5), the drying mechanism (6) and the calibrating mechanism (3) are sequentially arranged at intervals around the rotating shaft of the spindle assembly (2), and the spindle assembly (2) drives the oil water sensor (4) to sequentially pass through the calibrating mechanism (3), the cleaning mechanism (5) and the drying mechanism (6).
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| JPH10253569A (en) * | 1997-03-11 | 1998-09-25 | Japan Energy Corp | Method and device for calibrating in-oil moisture meter |
| JP2005062199A (en) * | 2004-10-01 | 2005-03-10 | Espec Corp | Calibration method for humidity sensor, and humidity sensor using it |
| CN101936939A (en) * | 2010-08-12 | 2011-01-05 | 重庆大学 | Saturated saline solution method for humidity calibration of humidity sensitive element for measuring micro-water contained in SF6 gas and device thereof |
| CN217738305U (en) * | 2022-07-27 | 2022-11-04 | 上海市计量测试技术研究院 | Batch calibration and detection device for temperature and humidity sensors |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11131569B2 (en) * | 2018-10-31 | 2021-09-28 | Wagner Electronic Products, Inc. | Hand held moisture meter in-field calibration |
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| JPH10253569A (en) * | 1997-03-11 | 1998-09-25 | Japan Energy Corp | Method and device for calibrating in-oil moisture meter |
| JP2005062199A (en) * | 2004-10-01 | 2005-03-10 | Espec Corp | Calibration method for humidity sensor, and humidity sensor using it |
| CN101936939A (en) * | 2010-08-12 | 2011-01-05 | 重庆大学 | Saturated saline solution method for humidity calibration of humidity sensitive element for measuring micro-water contained in SF6 gas and device thereof |
| CN217738305U (en) * | 2022-07-27 | 2022-11-04 | 上海市计量测试技术研究院 | Batch calibration and detection device for temperature and humidity sensors |
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