CN214121970U - Micrometer displacement vertical adjusting device for microcosmic experiment with adjusting range of 3 micrometers - Google Patents
Micrometer displacement vertical adjusting device for microcosmic experiment with adjusting range of 3 micrometers Download PDFInfo
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- CN214121970U CN214121970U CN202022901855.5U CN202022901855U CN214121970U CN 214121970 U CN214121970 U CN 214121970U CN 202022901855 U CN202022901855 U CN 202022901855U CN 214121970 U CN214121970 U CN 214121970U
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Abstract
The utility model provides a vertical adjusting device of micron displacement for the microcosmic experiment that adjustment range is 3 microns, adjustment range includes for the microcosmic experiment that adjustment range is 3 microns the vertical adjusting device of micron displacement: the device comprises a bottom glass plate, a top glass plate, a piezoelectric ceramic nano positioner arranged between the bottom glass plate and the top glass plate, and a direct current voltage regulator electrically connected with the piezoelectric ceramic nano positioner; the thickness of the bottom glass plate and the top glass plate is 1mm and are parallel to each other; the piezoelectric ceramic nanometer positioner is adhered between the bottom glass plate and the top glass plate, the input voltage of the direct current voltage regulator is alternating current 220V, and the highest output voltage is 100V. The thickness of the utility model is only 7mm, the area is matched with the glass model, and the requirement of narrow available space in the autoclave is completely met; the control precision is high, and the adjusting precision is +/-20 nm; the application is simple, and the operation and the control are easy.
Description
Technical Field
The utility model relates to a microcosmic visual experiment field, concretely relates to vertical adjusting device of micron displacement for microcosmic experiment that adjustment range is 3 microns.
Background
The microscopic visualization experiment is a key project in the oil reservoir development experiment technology. By utilizing the transparent characteristic of the glass visual model, the flowing phenomenon of the fluid in the etched pore canal can be observed, and a foundation is laid for scientific analysis.
The microscopic visualization level develops towards the direction of micro pores and high pressure and high temperature, and simultaneously, challenges are provided for the observation technology. The prior art encounters the problem that the micron-sized pore structure is difficult to break through when observed: how to finely adjust the focal length to image the micron-sized aperture clearly? The adjustment method is limited by the viewing space.
In order to realize the observation of the micron-sized structure under the high pressure condition, the effective space in the autoclave of the microscopic experiment is very narrow, and the autoclave comprises a glass model, an objective table, a regulation and control platform, a fluid/electric signal device and the like, as shown in fig. 1. Since the light space cannot be blocked, the available space is further reduced. The glass model is placed on the objective table, the three-dimensional movement of the glass model is adjusted by the adjusting platform, and the vertical Z direction is mainly imaging focusing micro-movement. For micron-sized objects, the fine focusing distance is 0-100 μm within the range. The prior art mainly has two types, one type is a mechanical fine distance adjusting mode, the controllable precision of the mechanical fine distance adjusting mode meets the requirement of more than 100 mu m, the size of an adjusting platform can be controlled within the range of 10cm multiplied by 10cm, and the mechanical fine distance adjusting mode can be installed in a high-pressure kettle space. If the mechanical control precision is improved, the size of the adjusting platform is greatly increased and exceeds the available space. The other is a nano-scale piezoelectric ceramic fine distance adjusting mode, the controllable precision can meet the requirement of nm level, but the volume of a finished product platform is larger than 5cm multiplied by 2cm, and a controller and a circuit are complicated. Two typical products are shown in figure 1, and the platform must be placed on an adjusting platform for use, and is limited by space. And because the whole body is a solid body, the light rays are blocked from passing through, and the observation condition of the glass model is not satisfied.
In summary, the following problems exist in the prior art: in the microscopic visualization experiment, the device is limited by a narrow space inside the autoclave, and the adjustment of the glass model is inconvenient.
SUMMERY OF THE UTILITY MODEL
The utility model provides a vertical adjusting device of micron displacement for the microcosmic experiment that the control range is 3 microns to in solving microcosmic visual experiment, be subject to the inside narrow and small space of autoclave, the inconvenient problem of adjustment of glass model.
Therefore, the utility model provides a vertical adjusting device of micron displacement for the microcosmic experiment that adjustment range is 3 microns, vertical adjusting device of micron displacement for the microcosmic experiment that adjustment range is 3 microns includes:
the device comprises a bottom glass plate, a top glass plate, a piezoelectric ceramic nano positioner arranged between the bottom glass plate and the top glass plate, and a direct current voltage regulator electrically connected with the piezoelectric ceramic nano positioner;
the thickness of the bottom glass plate and the top glass plate is 1mm and are parallel to each other;
the piezoelectric ceramic nanometer positioner is adhered between the bottom glass plate and the top glass plate, and the length multiplied by the width multiplied by the height of the piezoelectric ceramic nanometer positioner is as follows: the piezoelectric ceramic piece with the thickness of 1.5mm multiplied by 5mm has the maximum displacement of 3.7 mu m under the voltage of 90V;
the input voltage of the direct current voltage regulator is alternating current 220V, and the highest output voltage is 100V.
Furthermore, the number of the piezoelectric ceramic nanometer positioners is four, and the four piezoelectric ceramic nanometer positioners are respectively positioned at four corner points of the rectangle. Thus, the operation is stable.
Furthermore, a glass model for microscopic visual experiments is arranged on the top glass plate, and the bottom glass plate, the top glass plate and the glass model are all arranged in the autoclave.
Further, the bottom glass plate is arranged on an objective table, the objective table is provided with a light-transmitting through hole, and the light-transmitting through hole is opposite to the observation position of the glass model.
Further, the stage is located within an autoclave.
Further, the direct current voltage regulator is positioned outside the autoclave.
Further, an objective lens is arranged above the glass model for the microscopic visualization experiment, and the objective lens extends into the autoclave from the outside of the autoclave.
Furthermore, the objective table is arranged on the vertical guide rail through screw threads and can move up and down along the vertical guide rail, the screw threads are connected with the stepping motor, and the stepping motor is connected with the adjusting button.
Further, the adjusting button is arranged outside the autoclave, and the vertical guide rail is positioned in the autoclave.
Further, the bottom glass plate and the top glass plate are both rectangular.
The utility model discloses utilize piezoceramics's nanometer/micron order roll adjustment ability, researched and developed the vertical adjusting device of micron displacement who is applicable to microcosmic experiment, broken through prior art's restriction. The thickness of the utility model is only 7mm, the area is matched with the glass model, and the requirement of narrow available space in the autoclave is completely met; the control precision is high, and the adjusting precision is +/-20 nm; the application is simple, and the operation and the control are easy.
Drawings
FIG. 1 is a schematic structural diagram of an adjusting device for microscopic visualization experiments in the prior art;
fig. 2 is a schematic structural diagram of the vertical adjustment device for micro displacement for micro experiments with an adjustment range of 3 microns according to the present invention;
fig. 3 is a schematic structural diagram of the overlooking direction of the micro displacement vertical adjusting device for the micro experiment with the adjustment range of 3 micrometers according to the present invention; wherein, the direct current voltage regulator is removed;
fig. 4 is a working principle diagram of the micro-displacement vertical adjusting device for the micro-experiment with the adjustment range of 3 microns.
The reference numbers illustrate:
1. a bottom glass plate; 2. a piezoelectric ceramic nano positioner; 3. a top glass plate; 4. a direct current voltage regulator; 24. an electric wire;
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, the present invention will now be described.
1. Principle of method
The piezoelectric ceramic can generate micro displacement in the polarization direction under the action of voltage. The micrometer displacement vertical adjusting device is manufactured by utilizing the principle.
The piezoelectric stack is formed by stacking a plurality of piezoelectric ceramic plates, and the circuits of the adjacent ceramic plates work in a parallel connection mode. The piezoelectric ceramic plate has the characteristic of low-voltage driving in parallel connection electrically and is connected in series mechanically, and the output force and the displacement are linear superposition of the displacement of each piezoelectric ceramic plate. The piezoelectric stack is input with driving voltage, the input electric energy is converted through the inverse piezoelectric effect and is output in the form of mechanical energy, and displacement is generated in the axial direction.
The piezoelectric stack only outputs displacement and does not output force under the action of no pretightening force, and simultaneously outputs displacement and force under the action of the pretightening force. The piezoelectric stack is polarized along the z direction (vertical direction), and then a displacement formula is output:
ΔL＝Ld33 E
where Δ L is the output displacement, L is the total length, d33The piezoelectric constant is one of the most common important parameters for characterizing the performance of piezoelectric materials, and generally, the higher the piezoelectric constant of ceramics is, the better the piezoelectric performance is. In the subscripts: the first number refers to the direction of the electric field, the second number to the direction of the stress or strain, and the whole subscript "33" indicates that the polarization direction is the same as the direction of the applied force at the time of measurement.
The output force formula is as follows: fb＝k1·ΔL
In the formula, FbFor maximum output force, k1 is stiffness.
2. Structure of the product
The utility model discloses an adjustment range is the vertical adjusting device of micron displacement for the microcosmic experiment of 3 microns, also calls the vertical adjusting device of micron displacement who is applicable to the microcosmic experiment, as shown in figure 2, figure 3 is shown, including glass board, micro-control displacer (piezoceramics nanometer locator 2) and direct current voltage regulator 4.
Micro-control displacer (piezoelectric ceramic nanometer localizer)
The micro-control shifter (the piezoelectric ceramic nano positioner 2) is a piezoelectric stack, a multilayer piezoelectric ceramic piece of the piezoelectric stack is adopted, a piezoelectric ceramic piece with the thickness of 1.5mm multiplied by 5mm is adopted according to the requirements of a microscopic experiment, the maximum displacement is 3.7 mu m under the voltage of 90V, and the maximum output is 500N. The micro-control displacer (piezo-ceramic nanopositioner 2) is commercially available, for example, using a P-733.2XY piezo-ceramic nanopositioner, a P11 series nanopositioning stage.
② glass plate
The glass plate includes: the glass plate size is designed according to the specific size of an objective table and a glass model, UV glue is used for respectively bonding the micro-control displacers at four corners of the rectangular glass plate, and the top glass plate and the bottom glass plate are bonded to form a whole. The thickness of the glass plate is preferably 1mm, namely the whole thickness is 7mm, so that certain strength is ensured, and the space is saved.
③ DC voltage regulator
The input voltage of the direct current voltage regulator 4 is alternating current 220V, the highest output voltage is 100V, and safety guarantee is provided for the experimental process. The direct current voltage regulator is divided into a coarse gear and a fine gear, and is convenient for implementation of quick and accurate regulation and control. The positive and negative poles of the 4 micro-control shifters are connected with the positive and negative poles (parallel) of the direct current voltage regulator 4 through wires 24.
(2) Working process
The following example of adjusting the imaging focal length of the glass model in the microscopic experiment illustrates the application of the present invention.
The manufacturing and adjusting device comprises 4 micro-control displacers, namely when the displacement is 0, the integral output reaches 2000N, which is equivalent to an object capable of bearing 200g of mass. The glass model or the like generally used for microscopic experiments is placed on the stage so that the total mass of the device is not more than 100g, and thus the design meets the requirements.
As shown in fig. 4, ignoring the peripheral devices of the microscopic experiment, only the focus adjustment process is described below:
firstly, the whole displacement device is placed on an objective table, a glass model is placed on the displacement device, and a light through hole of the objective table is aligned with the observation position of the glass model.
And secondly, starting an image observation system, adjusting the position of the objective table slowly by adjusting a motor through a fine adjusting part (such as an adjusting button), and vertically moving the objective table up and down along the vertical guide rail until the image is clear. The precision of the fitting is 100 μm, and is controlled by a stepping motor and a precision screw thread. When the objective lens is more than 50 times, the images at the minimum interval still show jumpiness, and usually miss the clearest position, influenced by the step size of the stepping motor, the thread pitch and the like. Objective X100(100 times), pore diameter 2 μm.
And starting the micron displacement vertical adjusting device. Slowly and coarsely adjusting the increased voltage, adjusting the voltage between 0V and 90V, and continuously outputting micrometer displacement within the range of 0-3.7 μm. Observing and judging the clearest state of the image, and then slowly and finely adjusting and changing the voltage to make the image clearest.
And fourthly, carrying out relevant experimental research.
And fifthly, after the experiment is finished, restoring the zero position of the direct current voltage regulator. After that, the experimental work was carried out.
The utility model has the advantages of it is following:
1. the utility model realizes the continuous adjustment of the vertical displacement within the range of 0-3 μm;
2. the thickness of the device is only 7mm, the area of the device is matched with that of a glass model, and the requirement that the available space of the high-pressure kettle is narrow is completely met; the maximum output can reach 2000N, and the supporting force required by the glass model is completely met.
3. The device has high control precision, and the adjusting precision is +/-20 nm;
4. the device is simple to apply and easy to control.
The above description is only exemplary of the present invention, and is not intended to limit the scope of the present invention. For the utility model discloses a each component can make up each other under the condition of conflict not, and any technical personnel in the field do not deviate from the utility model discloses an equal change and the modification made under the prerequisite of the design and principle all should belong to the scope of protection of the utility model.
Claims (10)
1. The utility model provides a vertical adjusting device of micron displacement for microcosmic experiments that adjustment range is 3 microns which characterized in that, the vertical adjusting device of micron displacement for microcosmic experiments that adjustment range is 3 microns includes:
the device comprises a bottom glass plate, a top glass plate, a piezoelectric ceramic nano positioner arranged between the bottom glass plate and the top glass plate, and a direct current voltage regulator electrically connected with the piezoelectric ceramic nano positioner;
the thickness of the bottom glass plate and the top glass plate is 1mm and are parallel to each other;
the piezoelectric ceramic nanometer positioner is adhered between the bottom glass plate and the top glass plate, and the length multiplied by the width multiplied by the height of the piezoelectric ceramic nanometer positioner is as follows: the piezoelectric ceramic piece with the thickness of 1.5mm multiplied by 5mm has the maximum displacement of 3.7 mu m under the voltage of 90V;
the input voltage of the direct current voltage regulator is alternating current 220V, and the highest output voltage is 100V.
2. The micro-displacement vertical adjustment device for micro-experiments with an adjustment range of 3 μm as claimed in claim 1, wherein the number of the piezo-ceramic nano-locators is four, and the four piezo-ceramic nano-locators are respectively located at four corner points of the rectangle.
3. The micro-experimental vertical adjustment device for micro-experiments with an adjustment range of 3 μm according to claim 1, wherein the top glass plate is provided with a glass model for micro-visualization experiments, and the bottom glass plate, the top glass plate and the glass model are all arranged in the autoclave.
4. The micro-displacement vertical adjustment device for micro-experiments with an adjustment range of 3 μm according to claim 1, wherein the bottom glass plate is disposed on an object stage, and the object stage is provided with a light-transmitting through hole, and the light-transmitting through hole is opposite to the observation position of the glass model.
5. The micro-scale experimental vertical adjustment device with adjustment range of 3 μm according to claim 4, wherein the stage is located in an autoclave.
6. The micro-scale experimental vertical adjustment device with adjustment range of 3 μm according to claim 4, wherein the DC voltage regulator is located outside the autoclave.
7. The micro-displacement vertical adjustment device for micro-experiments with an adjustment range of 3 μm according to claim 4, wherein an objective lens is disposed above the glass mold for micro-visualization experiments, and the objective lens extends from the outside of the autoclave to the inside of the autoclave.
8. The micro-displacement vertical adjustment device for micro-experiments with an adjustment range of 3 μm according to claim 4, wherein the stage is disposed on the vertical guide rail by a screw thread and can move up and down along the vertical guide rail, and the screw thread is connected to a stepping motor connected to the adjustment knob.
9. The micrometer displacement vertical adjustment device for microscopic experiments with an adjustment range of 3 micrometers as claimed in claim 8, wherein the adjustment knob is disposed outside the autoclave, and the vertical guide rail is disposed inside the autoclave.
10. The micro-scale experimental vertical adjustment device of claim 1, wherein the bottom glass plate and the top glass plate are rectangular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022901855.5U CN214121970U (en) | 2020-12-04 | 2020-12-04 | Micrometer displacement vertical adjusting device for microcosmic experiment with adjusting range of 3 micrometers |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022901855.5U CN214121970U (en) | 2020-12-04 | 2020-12-04 | Micrometer displacement vertical adjusting device for microcosmic experiment with adjusting range of 3 micrometers |
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| CN214121970U true CN214121970U (en) | 2021-09-03 |
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