Calibration device of ultrasonic generator

Abstract

The invention discloses a calibration device of an ultrasonic generator, and relates to the technical field of ultrasonic calibration, the calibration device comprises a stable bottom plate, fixing frame rods are mounted on the two sides of the top end of the stable bottom plate, a transmission mechanism is included, and a calibration mounting frame is arranged at the top end of the stable bottom plate; a voltage calibration unit, a current calibration unit, a waveform display unit, a frequency calibration unit and a noise measurement unit are mounted in the calibration mounting frame, a generator mounting frame is arranged at the upper end of the calibration mounting frame, an ultrasonic generator is mounted in the generator mounting frame, and a connecting wire is mounted at the bottom end of the generator mounting frame. And the bottom end of the connecting wire is electrically connected with the top end of the generator mounting frame. By calibrating parameters such as the output frequency, the frequency stability, the current value, the current stability, the output power and the noise sound pressure level of the ultrasonic generator, the magnitude accuracy and the working quality of the ultrasonic generator can be effectively ensured.

Description

Technical Field

[0001] This invention relates to the field of ultrasonic calibration technology, specifically to a calibration device for an ultrasonic generator. Background Technology

[0002] Currently, an ultrasonic generator is a device that converts electrical signals into mechanical vibration signals. After the power supply is turned on, the ultrasonic generator generates a high-frequency AC signal, which is input to the transducer matched with the ultrasonic generator. The specific frequency output by the ultrasonic generator is the operating frequency of the transducer, and the frequency range is usually (20~100) kHz. After the transducer obtains the signal, it is driven to work. Through impedance matching by a power amplifier, the transducer is driven to convert the electrical signal into a mechanical vibration signal.

[0003] Existing ultrasonic generators cannot comprehensively calibrate parameters such as output frequency, frequency stability, current value, current stability, output power, and noise sound pressure level during the calibration process, and the calibration is not comprehensive or reliable enough. Summary of the Invention

[0004] The purpose of this invention is to provide a calibration device for an ultrasonic generator to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a calibration device for an ultrasonic generator, comprising a stabilizing base plate, wherein fixed support rods are mounted on both sides of the top of the stabilizing base plate, and a transmission mechanism is included.

[0006] The top of the stable base plate is provided with a calibration mounting frame, and the calibration mounting frame is equipped with a voltage calibration unit, a current calibration unit, a waveform display unit, a frequency calibration unit and a noise measurement unit. The upper end of the calibration mounting frame is provided with a generator mounting frame, and an ultrasonic generator is installed inside the generator mounting frame. The bottom end of the generator mounting frame is equipped with a connecting wire, and the bottom end of the connecting wire is electrically connected to the top end of the generator mounting frame.

[0007] A fixed horizontal plate is installed between the top ends of the fixed frame rods on both sides, and a fixed frame is installed at the top end of the fixed horizontal plate. A sliding groove is opened on the opposite side of each of the fixed frame rods on both sides, and a transmission mechanism is installed at the top end of the fixed horizontal plate.

[0008] Preferably, a movable slider is slidably installed at both the top and bottom of the inner cavity of the movable slide groove. The end of the movable slider at the top, away from the movable slide groove, is connected to the generator mounting frame, and the end of the movable slider at the bottom, away from the movable slide groove, is connected to the calibration mounting frame.

[0009] Preferably, connecting screw sleeves are installed at the front end of the movable slider at the top left and the bottom end of the movable slider at the bottom right. A first rotating screw is installed on the front side of the inner cavity of the movable slide groove on the left through a bearing, and a second rotating screw is installed on the rear side of the inner cavity of the movable slide groove on the right through a bearing.

[0010] Preferably, both the first rotating screw and the second rotating screw pass through the interior of the connecting screw sleeve, the top of the inner cavity of the movable slide groove is provided with a rotating circular opening, and stabilizing support plates are installed on both sides of the stabilizing base plate.

[0011] Preferably, the transmission mechanism includes a first rotating wheel, a first transmission belt, a second transmission belt, and a second rotating wheel. The top ends of the first rotating screw and the second rotating screw are each fitted with a rotating rod through a rotating opening. The top end of the rotating rod on the left is fitted with the first rotating wheel, and the top end of the rotating rod on the right is fitted with the second rotating wheel. The first transmission belt is fitted onto the outside of the first rotating wheel, and the second transmission belt is fitted onto the outside of the second rotating wheel.

[0012] Preferably, the transmission mechanism further includes a double-headed wheel, a rotating rod, and a single-phase motor. The single-phase motor is installed at the top of the inner cavity of the fixed frame, and the rotating rod is installed on the output shaft at the bottom of the single-phase motor. The bottom of the rotating rod is connected to the top of the fixed horizontal plate through a bearing. The double-headed wheel is installed in the middle of the rotating rod. The end of the first transmission belt away from the first wheel is fitted with the top of the double-headed wheel, and the end of the second transmission belt away from the second wheel is fitted with the bottom of the double-headed wheel.

[0013] Preferably, the transmission mechanism further includes a rotating block, a rotating slot, a mounting slot, and a working electromagnetic block, and the top of the rotating rod is provided with a rotating slot, the inner cavity of the rotating slot is movably installed with a rotating mechanism, the top of the rotating blocks on both sides are respectively connected to the bottom ends of a first rotating wheel and a second rotating wheel, the bottom end of the rotating block is provided with a mounting slot, and the inner cavity of the mounting slot is installed with a working electromagnetic block.

[0014] Preferably, a working magnetic plate is installed at the bottom of the inner cavity of the rotating slot, and a control panel is installed on the right side of the fixed frame rod. The single-phase motor and the working electromagnetic block are electrically connected to the control panel.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] This invention calibrates parameters such as the output frequency, frequency stability, current value, current stability, output power, and noise sound pressure level of an ultrasonic generator. This effectively ensures the accuracy of the ultrasonic generator's measurements and its working quality. In practical work, calibration items can be reasonably selected according to the needs of the ultrasonic generator to ensure the accuracy and reliability of its various output values, meet the process requirements of rust removal, descaling, and precision cleaning of the tested samples, and thus ensure the product quality of weapons, equipment, and scientific research and production. Attached Figure Description

[0017] Figure 1 A schematic diagram of the overall structure is provided for embodiments of the present invention;

[0018] Figure 2 This is a horizontal sectional view of the fixing frame and fixing bracket provided in an embodiment of the present invention;

[0019] Figure 3 Provided for embodiments of the present invention Figure 2 Enlarged structural diagram at point A in the middle;

[0020] Figure 4 This is a three-dimensional structural diagram of the stable base plate and stable support plate provided in an embodiment of the present invention.

[0021] In the diagram: 1. Stabilizing base plate; 2. Fixed support rod; 3. Generator mounting frame; 4. Connecting wire; 5. Calibration mounting frame; 6. Moving slide; 7. Fixed cross plate; 8. Fixed frame; 9. First rotating screw; 10. Moving slider; 11. Connecting screw sleeve; 12. Transmission mechanism; 1201. First rotating wheel; 1202. First transmission belt; 1203. Double-headed rotating wheel; 1204. Second transmission belt; 1205. Second rotating wheel; 1206. Rotating rod; 1207. Single-phase motor; 1208. Rotating block; 1209. Rotating slot; 1210. Mounting slot; 1211. Working electromagnetic block; 13. Stabilizing support plate; 14. Second rotating screw. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Please see Figure 1-4 The present invention provides a technical solution: a calibration device for an ultrasonic generator, comprising a stabilizing base plate 1, wherein fixed support rods 2 are installed on both sides of the top of the stabilizing base plate 1, and a transmission mechanism 12 is included.

[0024] The top of the stable base plate 1 is provided with a calibration mounting frame 5. The calibration mounting frame 5 is equipped with a voltage calibration unit, a current calibration unit, a waveform display unit, a frequency calibration unit and a noise measurement unit. The upper end of the calibration mounting frame 5 is provided with a generator mounting frame 3. An ultrasonic generator is installed inside the generator mounting frame 3. A connecting line 4 is installed at the bottom of the generator mounting frame 3. The bottom end of the connecting line 4 is electrically connected to the top end of the generator mounting frame 3.

[0025] The output frequency calibration is as follows:

[0026] By using the frequency calibration unit in calibration mounting frame 5, and after the output frequency of the ultrasonic generator stabilizes during operation, connect the corresponding terminals of the ultrasonic generator and calibration mounting frame 5, measure and record the output frequency of the ultrasonic generator, and record the displayed value of the calibrated ultrasonic generator. The displayed value of the frequency calibration unit of the calibration device The frequency error of the calibrated ultrasonic generator is... for;

[0027] ;

[0028] The frequency stability calibration is as follows:

[0029] To ensure a continuous and constant frequency output from the ultrasonic generator, it is necessary to measure the fluctuation of the ultrasonic generator's output frequency, i.e., frequency stability, in order to evaluate the working quality of the ultrasonic generator. Frequency stability is measured by the change in output within a specified time interval while other conditions remain constant.

[0030] After the ultrasonic generator output stabilizes, record the frequency measurements at specific intervals using the calibration end within the time intervals specified in the instruction manual of the ultrasonic generator being calibrated. and from all the measured Select the maximum value from the middle and minimum value The frequency stability of the calibrated ultrasonic generator. for

[0031] (2)

[0032] In the formula: —The output frequency value of the ultrasonic generator being calibrated, in Hz;

[0033] The current value is calibrated as follows:

[0034] Ultrasonic generators produce high-frequency current during operation to drive the transducer. If the current cannot rise properly or rises insufficiently, it will affect the normal use of the ultrasonic generator. Therefore, it is necessary to calibrate the current value to ensure its accuracy.

[0035] Since the ultrasonic generator outputs a high-frequency current, a conventional ammeter cannot meet the calibration requirements. Using the current calibration unit within the ultrasonic generator calibration device, the output current of the ultrasonic generator is measured directly after the output stabilizes during operation, and the displayed values ​​of the ultrasonic generator being calibrated are recorded. The displayed value of the current calibration unit of the calibration device The error of the calibrated ultrasonic generator for;

[0036] ;

[0037] The calibration of current stability is as follows:

[0038] Similar to frequency stability measurement, current stability calibration is required to ensure the continuous and stable operation of the ultrasonic generator. After the ultrasonic generator output stabilizes, the current calibration unit in the calibration device records the measured current values ​​at regular intervals within the time intervals specified in the instruction manual of the ultrasonic generator being calibrated. and from all the measured Select the maximum value from the middle and minimum value The current stability of the ultrasonic generator under test for;

[0039] (4)

[0040] In the formula: — Output current value of the ultrasonic generator being calibrated, in A;

[0041] Output power calibration includes the following:

[0042] Ultrasonic generators typically operate at 220V. To assess the output power of an ultrasonic generator when the input power supply voltage changes (usually by ±10%), the output power needs to be calibrated. The calibration method is as follows:

[0043] (1) Adjust the power supply voltage to 220V, adjust the frequency of the ultrasonic generator so that the ammeter reading on the device is at its maximum, and read the product of the current calibration unit and the voltage calibration unit in the calibration device at this time, which is the output power of the ultrasonic generator.

[0044] (2) Adjust the power supply voltage to 198V, repeat step 1), read the product of the current calibration unit and the voltage calibration unit in the calibration device at this time, and calculate the output power;

[0045] (3) Adjust the power supply voltage to 242V and repeat step 2).

[0046] (4) When the power supply voltage changes by ±10%, the output power of the ultrasonic generator should not be less than the technical specifications required in the instruction manual.

[0047] The calibration of noise sound pressure level includes the following:

[0048] When the ultrasonic generator is working normally, within the specified operating frequency range, the noise sound pressure level of the ultrasonic generator is measured using the noise measurement unit in the calibration device at a distance of 1m from the ultrasonic generator and a height of 1.5m above the ground. The maximum sound pressure level of the ultrasonic generator's output noise is recorded. The maximum permissible value specified in the technical specifications of the ultrasonic generator. A comparison is made; if the maximum allowed value is exceeded... The on-site testing environment should be protected by sound isolation devices or noise reduction devices;

[0049] A fixed horizontal plate 7 is installed between the top ends of the fixed frame rods 2 on both sides. A fixed frame 8 is installed at the top end of the fixed horizontal plate 7. A movable sliding groove 6 is opened on the opposite side of each of the fixed frame rods 2 on both sides. A transmission mechanism 12 is installed at the top end of the fixed horizontal plate 7.

[0050] The top and bottom of the inner cavity of the movable slide groove 6 are slidably mounted with movable sliders 10. The top end of the movable slider 10 away from the movable slide groove 6 is connected to the generator mounting frame 3, and the bottom end of the movable slider 10 away from the movable slide groove 6 is connected to the calibration mounting frame 5.

[0051] Connecting screw sleeves 11 are installed at the front end of the movable slider 10 at the top left and the bottom end of the movable slider 10 at the bottom right. A first rotating screw 9 is installed on the front side of the inner cavity of the movable slide groove 6 on the left through a bearing, and a second rotating screw is installed on the rear side of the inner cavity of the movable slide groove 6 on the right through a bearing.

[0052] The first rotating screw 9 and the second rotating screw 14 both pass through the interior of the connecting screw sleeve 11. The top of the inner cavity of the movable slide groove 6 is provided with a rotating round opening. Stable support plates 13 are installed on both sides of the stable base plate 1. The stability of the whole system during use is increased by the stable base plate 1.

[0053] The transmission mechanism 12 includes a first rotating wheel 1201, a first transmission belt 1202, a second transmission belt 1205, and a second rotating wheel 1205. The top ends of the first rotating screw 9 and the second rotating screw 14 are both installed with rotating rods through rotating openings. The top end of the rotating rod on the left is installed with the first rotating wheel 1201, and the top end of the rotating rod on the right is installed with the second rotating wheel 1205. The first transmission belt 1202 is fitted onto the outside of the first rotating wheel 1201, and the second transmission belt 1204 is fitted onto the outside of the second rotating wheel 1205.

[0054] The transmission mechanism 12 also includes a double-headed wheel 1203, a rotating rod 1206, and a single-phase motor 1207. The single-phase motor 1207 is installed at the top of the inner cavity of the fixed frame 8. The rotating rod 1206 is installed on the output shaft at the bottom of the single-phase motor 1207. The bottom of the rotating rod 1206 is connected to the top of the fixed horizontal plate 7 through a bearing. The double-headed wheel 1203 is installed in the middle of the rotating rod 1206. The end of the first transmission belt 1202 away from the first wheel 1201 is sleeved and connected to the top of the double-headed wheel 1203. The end of the second transmission belt 1204 away from the second wheel 1205 is sleeved and connected to the bottom of the double-headed wheel 1203.

[0055] The transmission mechanism 12 further includes a rotating block 1208, a rotating slot 1209, a mounting slot 1210, and a working electromagnetic block 1211. The top of the rotating rod is provided with a rotating slot 1209, and the rotating block 1208 is movably installed in the inner cavity of the rotating slot 1209. The top of the rotating blocks 1208 on both sides is respectively connected to the bottom of a first rotating wheel 1201 and a second rotating wheel 1205. The bottom of the rotating block 1208 is provided with a mounting slot 1210, and the working electromagnetic block 1211 is installed in the inner cavity of the mounting slot 1210.

[0056] A working magnetic plate is installed at the bottom of the inner cavity of the rotating slot 1209. A control panel is installed on the right side of the fixed frame rod 2. The control terminals inside the single-phase motor 1207, the working electromagnetic block 1211, the ultrasonic generator, and the calibration mounting frame 5 are electrically connected to the control panel.

[0057] The specific implementation method is as follows: When adjusting the position of the generator mounting frame 3 and its distance from the calibration mounting frame 5, the working electromagnetic block 1211 on the left side is activated by the control panel to generate magnetism, which attracts the working magnetic plate. Then, the single-phase motor 1207 is activated to drive the rotating rod 1206 to rotate, which in turn drives the double-headed rotating wheel 1203 to rotate, which in turn drives the first transmission belt 1202 to rotate, which in turn drives the first rotating wheel 1201 to rotate, which in turn drives the rotating rod on the left side to rotate. The rotating rod on the left side drives the first rotating screw 9 to rotate, and through its cooperation with the connecting screw sleeve 11, it drives the top moving slider 10 to move inside the moving slide groove 6, which in turn drives the generator mounting frame 3 to move, thereby realizing the movement of the generator mounting frame 3 and the adjustment of its distance from the calibration mounting frame 5. When adjusting the position of the calibration mounting frame 5, the above actions are repeated in reverse.

[0058] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0059] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A calibration device of an ultrasonic generator, comprising a stable base plate (1), both sides of the top end of the stable base plate (1) are provided with a fixed frame rod (2), characterized in that: Including the transmission mechanism (12): The top of the stable base plate (1) is provided with a calibration mounting frame (5). The calibration mounting frame (5) is equipped with a voltage calibration unit, a current calibration unit, a waveform display unit, a frequency calibration unit and a noise measurement unit. The upper end of the calibration mounting frame (5) is provided with a generator mounting frame (3). The generator mounting frame (3) is equipped with an ultrasonic generator. The bottom end of the generator mounting frame (3) is equipped with a connecting line (4). The bottom end of the connecting line (4) is electrically connected to the top end of the generator mounting frame (3). A fixed horizontal plate (7) is installed between the top ends of the fixed frame rods (2) on both sides. A fixed frame (8) is installed at the top end of the fixed horizontal plate (7). A sliding groove (6) is opened on the opposite side of the fixed frame rods (2) on both sides. A transmission mechanism (12) is installed at the top end of the fixed horizontal plate (7).

2. A calibration apparatus for an ultrasonic generator according to claim 1, characterized in that: The top and bottom of the inner cavity of the movable slide groove (6) are both slidably mounted with movable sliders (10). The end of the movable slider (10) at the top that is away from the movable slide groove (6) is connected to the generator mounting frame (3), and the end of the movable slider (10) at the bottom that is away from the movable slide groove (6) is connected to the calibration mounting frame (5).

3. A calibration apparatus for an ultrasonic generator according to claim 2, characterized in that: Connecting screw sleeves (11) are installed at the front end of the movable slider (10) at the top left and at the bottom end of the movable slider (10) at the bottom right. A first rotating screw (9) is installed on the front side of the inner cavity of the movable slide groove (6) on the left through a bearing, and a second rotating screw (14) is installed on the rear side of the inner cavity of the movable slide groove (6) on the right through a bearing.

4. A calibration apparatus for an ultrasonic generator according to claim 3, characterized in that: The first rotating screw (9) and the second rotating screw (14) both pass through the inside of the connecting screw sleeve (11), and the top of the inner cavity of the moving slide (6) is provided with a rotating round opening. Stable support plates (13) are installed on both sides of the stable base plate (1).

5. A calibration apparatus for an ultrasonic generator according to claim 4, characterized in that: The transmission mechanism (12) includes a first rotating wheel (1201), a first transmission belt (1202), a second transmission belt (1205), and a second rotating wheel (1205). The top ends of the first rotating screw (9) and the second rotating screw (14) are both fitted with rotating rods through rotating openings. The top end of the rotating rod on the left is fitted with the first rotating wheel (1201), and the top end of the rotating rod on the right is fitted with the second rotating wheel (1205). The first rotating wheel (1201) is fitted with the first transmission belt (1202), and the second rotating wheel (1205) is fitted with the second transmission belt (1204).

6. A calibration apparatus for an ultrasonic generator according to claim 5, characterized in that: The transmission mechanism (12) further includes a double-head rotating wheel (1203), a rotating rod (1206) and a single-phase motor (1207), the single-phase motor (1207) is installed at the top end of the inner cavity of the fixed frame (8), an output shaft at the bottom end of the single-phase motor (1207) is installed with the rotating rod (1206), the bottom end of the rotating rod (1206) is connected with the top end of the fixed horizontal plate (7) through a bearing, the middle part of the rotating rod (1206) is installed with the double-head rotating wheel (1203), one end of the first transmission belt (1202) away from the first rotating wheel (1201) is connected with the top end of the double-head rotating wheel (1203) in a sleeved manner, and one end of the second transmission belt (1204) away from the second rotating wheel (1205) is connected with the bottom end of the double-head rotating wheel (1203) in a sleeved manner.

7. A calibration apparatus for an ultrasonic generator according to claim 6, characterized in that: The transmission mechanism (12) further includes a rotating block (1208), a rotating notch (1209), a mounting notch (1210) and a working electromagnetic block (1211), the top end of the rotating rod is provided with the rotating notch (1209), the rotating block (1208) is movably installed in the inner cavity of the rotating notch (1209), the top end of the rotating block (1208) on the left side is connected with the bottom end of the first rotating wheel (1201), and the top end of the rotating block (1208) on the right side is connected with the bottom end of the second rotating wheel (1205), the bottom end of the rotating block (1208) is provided with the mounting notch (1210), and the working electromagnetic block (1211) is installed in the inner cavity of the mounting notch (1210).

8. A calibration apparatus for an ultrasonic generator according to claim 7, characterized in that: The inner cavity of the rotating notch (1209) is installed with a working magnetic plate, the right side of the fixed frame rod (2) is installed with a control panel, and the single-phase motor (1207) and the working electromagnetic block (1211) are electrically connected with the control panel.

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