CN211603435U - Detection device for liquid discharge characteristics - Google Patents
Detection device for liquid discharge characteristics Download PDFInfo
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- CN211603435U CN211603435U CN201921775112.9U CN201921775112U CN211603435U CN 211603435 U CN211603435 U CN 211603435U CN 201921775112 U CN201921775112 U CN 201921775112U CN 211603435 U CN211603435 U CN 211603435U
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Abstract
The utility model discloses a detection apparatus for liquid discharge characteristic, include: the device comprises a power supply, a step-up transformer, a full-wave rectifier, an energy storage capacitor, an air switch, an experiment box body, an experiment upper electrode, an experiment lower electrode, an upper surface plate, a voltage measuring device, a current measuring device, a hydrophone and an oscilloscope; the power supply is connected with the full-wave rectifier through the step-up transformer, the full-wave rectifier is connected with the experimental upper electrode through the air switch, the full-wave rectifier is also connected with the experimental lower electrode through the current measuring device, and two ends of the energy storage capacitor are respectively connected with the output end of the full-wave rectifier; the first end of the voltage measuring device is connected with the first output end of the full-wave rectifier, the second end of the voltage measuring device is connected with the oscilloscope, the third end of the voltage measuring device is connected with the second output end of the full-wave rectifier, the oscilloscope is further connected with the hydrophone and the current measuring device, the upper surface plate is arranged on the experimental box body, and the hydrophone is arranged on one side of the experimental upper electrode through the upper surface plate. The problem of liquid discharge's detection operation complicacy is solved.
Description
Technical Field
The utility model relates to a liquid discharge technical field especially relates to a liquid discharge characteristic's detection device.
Background
The liquid electricity effect is a general term for physical effects such as heat, light, force, sound, etc. accompanied by high-speed capability conversion in the case of high-voltage and large-current pulse discharge in a liquid medium. The liquid electric effect is widely applied to industries such as machining and manufacturing, electric pulse cleaning, extracorporeal lithotripsy, underwater sonar equipment manufacturing and the like. Because the liquid electricity effect generated by using the liquid (such as water) discharge technology has the advantages of environment friendliness, high efficiency, low cost and the like.
The liquid discharge process is a complex physical and chemical process. The discharge characteristics of each liquid are different, and factors influencing liquid discharge are many, mainly including charge voltage, liquid conductivity, electrode gap distance, and impact wave pressure attenuation amplitude and distance generated by discharge, so that the detection operation of liquid discharge is complex.
Disclosure of Invention
The embodiment of the utility model provides a detection device of liquid discharge characteristic can effectively solve the problem that prior art liquid discharge's detection operation is complicated.
In order to achieve the above object, an embodiment of the present invention provides a detection apparatus for liquid discharge characteristics, including: the device comprises a power supply, a step-up transformer, a full-wave rectifier, an energy storage capacitor, an air switch, an experiment box body for containing liquid, an experiment upper electrode, an experiment lower electrode, a voltage measuring device for measuring the voltage of the energy storage capacitor, a current measuring device for measuring the current when the energy storage capacitor discharges, a hydrophone for measuring the discharge shock wave in the liquid in the experiment box body, an upper surface plate for fixing the position of the hydrophone, and an oscilloscope for receiving a measuring signal of the voltage measuring device, a measuring signal of the current measuring device and a measuring signal of the hydrophone;
the input end of the boosting transformer is connected with the power supply, the output end of the boosting transformer is connected with the input end of the full-wave rectifier, and the first output end of the full-wave rectifier is connected with the experimental upper electrode through the air switch; the second output end of the full-wave rectifier is connected with the experimental lower electrode, and the experimental upper electrode and the experimental lower electrode are arranged oppositely;
the first end of the energy storage capacitor is connected between the first output end of the full-wave rectifier and the air switch, and the second end of the energy storage capacitor is connected between the second output end of the full-wave rectifier and the experimental lower electrode;
the upper surface plate is arranged at an opening of the experiment box body, the hydrophone is arranged on one side of the experiment upper electrode through the upper surface plate, and the measuring end of the current measuring device is connected between the second end of the energy storage capacitor and the experiment lower electrode; a first end of the voltage measuring device is connected with a first output end of the full-wave rectifier, and a measuring end of the voltage measuring device is connected between a second output end of the full-wave rectifier and a second end of the energy storage capacitor;
the oscilloscope is respectively connected with the output end of the current measuring device, the output end of the voltage measuring device and the output end of the hydrophone.
As an improvement of the scheme, the upper surface plate is provided with a plurality of strip-shaped through holes;
the hydrophone is arranged in any one of the strip-shaped through holes.
As an improvement of the above scheme, the method further comprises the following steps: a movable base;
the experiment lower electrode is detachably connected to the base, and penetrates through the base to be connected with the second output end of the full-wave rectifier.
As an improvement of the above scheme, the method further comprises the following steps: the fixing device of the experimental upper electrode and at least four supporting columns;
the experimental upper electrode is inserted in the fixing device, one end of the supporting column is inserted in the fixing device, and the other end of the supporting column is inserted in the base.
As an improvement of the scheme, the experimental lower electrode is connected to the base in a threaded mode.
As a modification of the above, the full-wave rectifier includes four identical diodes;
the cathode of the first diode is connected with the anode of the second diode, and the anode of the first diode is connected with the anode of the fourth diode;
the cathode of the third diode is connected with the cathode of the second diode, and the anode of the third diode is connected with the cathode of the fourth diode;
a first output end of the boosting transformer is connected between the cathode of the first diode and the anode of the second diode, and a second output end of the boosting transformer is connected between the anode of the third diode and the cathode of the fourth diode;
the experimental upper electrode is connected between the cathode of the third diode and the cathode of the second diode through the air switch; the experimental lower electrode is connected between the anode of the first diode and the anode of the fourth diode.
As an improvement of the above scheme, the method further comprises the following steps: protection resistance and measurement resistance;
the protection resistor is connected between the first output end of the full-wave rectifier and the air switch, and the measuring resistor is connected in parallel to two ends of the energy storage capacitor.
As an improvement of the scheme, the voltage measuring device is a high-voltage probe.
As a modification of the above, the current measuring device is a rogowski coil.
Compared with the prior art, the liquid discharge characteristic detection device disclosed by the utility model has the advantages that the liquid to be detected is put into the experiment box body; after the power supply is started, the boosting transformer boosts and charges the energy storage capacitor through the full-wave rectifier; after the energy storage capacitor reaches a preset capacitor voltage, the air switch is turned on, and the experiment upper electrode and the experiment lower electrode discharge; the measurement data of the voltage measurement device, the measurement data of the current measurement device and the measurement data of the hydrophone are transmitted to the oscilloscope, the oscilloscope displays the discharge waveform of the liquid, so that the discharge characteristic of the liquid to be measured is obtained, and the detection device of the discharge characteristic of the liquid is convenient for replacing the liquid to be measured, so that the discharge characteristics of different liquids can be obtained. Meanwhile, the detection device for the liquid discharge characteristic can simultaneously adjust a plurality of factors (such as charging voltage, liquid conductivity, electrode gap distance, and damping amplitude and distance of shock wave pressure generated by discharge) influencing the liquid discharge effect, so that the detection operation of liquid discharge is simplified.
Drawings
Fig. 1 is a schematic structural diagram of a device for detecting a liquid discharge characteristic according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an upper surface plate in a device for detecting liquid discharge characteristics according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a base and a fixing device in the device for detecting liquid discharge characteristics according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Fig. 1 is a schematic structural diagram of a system for detecting a liquid discharge characteristic according to an embodiment of the present invention.
The embodiment of the utility model provides a detecting system of liquid discharge characteristic, include: the device comprises a power supply 1, a boosting transformer 2, a full-wave rectifier 3, an energy storage capacitor C, an air switch TGS, an experiment box 6 for containing liquid, an experiment upper electrode 7, an experiment lower electrode 8, a voltage measuring device 4 for measuring the voltage of the energy storage capacitor C, a current measuring device 5 for measuring the current when the energy storage capacitor C discharges, a hydrophone 9 for measuring the discharge shock wave in the liquid in the experiment box 6, an upper surface plate for fixing the position of the hydrophone 9, and an oscilloscope 10 for receiving the measuring signal of the voltage measuring device 4 and the measuring signal of the current measuring device 5.
The input end of the boosting transformer 2 is connected with the power supply 1, the output end of the boosting transformer 2 is connected with the input end of the full-wave rectifier 3, and the first output end of the full-wave rectifier 3 is connected with the experimental upper electrode 7 through the air switch TGS; the second output end of the full-wave rectifier 3 is connected with the experiment lower electrode 8, and the experiment upper electrode 7 is arranged opposite to the experiment lower electrode 8.
The first end of the energy storage capacitor C is connected between the first output end of the full-wave rectifier 3 and the air switch TGS, and the second end of the energy storage capacitor C is connected between the second output end of the full-wave rectifier 3 and the experimental lower electrode 8.
The upper surface plate is arranged at an opening of the experiment box body, the hydrophone 9 is arranged on one side of the experiment upper electrode 7 through the upper surface plate, and the measuring end of the current measuring device 5 is connected between the second end of the energy storage capacitor C and the experiment lower electrode 8; a first end of the voltage measuring device 4 is connected to a first output end of the full-wave rectifier 3, and a measuring end of the voltage measuring device 4 is connected between a second output end of the full-wave rectifier 3 and a second end of the energy storage capacitor C.
The oscilloscope 10 is respectively connected with the output end of the current measuring device 5, the output end of the voltage measuring device 4 and the output end of the hydrophone 9.
Referring to fig. 1, in the present embodiment, the voltage measuring device 4 is a high voltage probe, which is TEK-P6015A, has a bandwidth of 75MHZ and a maximum voltage of 40 kV; the current measuring device 5 is a rogowski coil with the model number of PEARSON 4418; the hydrophone 9 is of an RHS-10 model and is suitable for high-frequency measurement above 200 KHz; the oscilloscope 10 is of the model EDS 204-T. The electrode gap distance between the experimental upper electrode 7 and the experimental lower electrode 8 is not limited herein. The liquid is water, and may be other liquids capable of discharging, and is not limited herein.
In summary, the liquid to be tested is put into the experimental box body 6; after the power supply 1 is started, the boosting transformer 2 boosts and charges the energy storage capacitor C through the full-wave rectifier 3; after the energy storage capacitor C reaches a preset capacitor voltage, the air switch TGS is turned on, and the experiment upper electrode 7 and the experiment lower electrode 8 discharge; the measurement data of the voltage measurement device 4, the measurement data of the current measurement device 5 and the measurement data of the hydrophone 9 are transmitted to an oscilloscope 10, the oscilloscope 10 displays a liquid discharge waveform, so that the discharge characteristic of the liquid to be measured is obtained, and the liquid discharge characteristic detection system is convenient for replacing the liquid to be measured, so that the discharge characteristics of different liquids can be obtained. Meanwhile, the detection system of the liquid discharge characteristic can simultaneously adjust a plurality of factors (such as charging voltage, liquid conductivity, electrode gap distance, and damping amplitude and distance of shock wave pressure generated by discharge) influencing the liquid discharge effect, so that the detection operation of liquid discharge is simplified.
Referring to fig. 2, as an improvement of the above scheme, the upper surface plate is provided with a plurality of strip-shaped through holes; the hydrophone is arranged in any one of the strip-shaped through holes. In this embodiment, the upper plate is provided with three elongated through holes, a plurality of small circular holes and a large through hole capable of passing through the experimental upper electrode in the center of the upper plate.
Specifically, the upper surface plate is detachably connected to the experiment box body, and the hydrophone 9 is fixed at different positions of the through holes, so that the horizontal distance between the hydrophone 9 and the center is changed, and the relation between the attenuation amplitude and the distance of the shock wave pressure generated by liquid discharge is obtained. In this embodiment, the position of the hydrophone 9 can be fixed by inserting screws into the elongated through holes.
Referring to fig. 3, as an improvement of the above scheme, the method further includes: a movable base; in this embodiment, the base is a trapezoidal table.
The experiment bottom electrode 8 is detachably connected to the base, and the experiment bottom electrode 8 penetrates through the base to be connected with the second output end of the full-wave rectifier 3.
Specifically, because the base can remove for the base is not in charge of single experiment box 6, is convenient for change the liquid that awaits measuring, conveniently changes the electrode tip simultaneously, is convenient for detect the influence of electrode shape to discharge characteristic. And, because the base is portable, still be convenient for measure the experiment and go up the distance between the electrode and the experiment bottom electrode to detect the influence of electrode gap distance to liquid discharge characteristic. In this embodiment, the base can be placed in the experimental box 6 due to its own weight, and will not easily move with the shock generated by the liquid discharge explosion.
As an improvement of the above scheme, the method further comprises the following steps: the fixing device 11 of the experimental upper electrode 7 and at least four supporting columns; the experimental upper electrode 7 is inserted in the fixing device 11, one end of the supporting column is inserted in the fixing device 11, and the other end of the supporting column is inserted in the base. In this embodiment, four supports are provided, but the number of the support columns is not limited, and the more the support columns are, the more stable the device is; the fixing device 11 is a fixing table, and the shape of the fixing table is not limited in this embodiment.
Specifically, through saying that experiment upper electrode 7 pegs graft in the fixed station, the one end of support column is pegged graft in the fixed station, and the other end of support column is pegged graft in the base, has guaranteed experiment upper electrode 7 and experiment lower electrode 8's stability for the electrode gap can not change along with the vibrations that the liquid discharge explosion produced.
As a modification of the above, the experimental lower electrode 8 is screwed to the base.
Specifically, because experiment bottom electrode 8 threaded connection in the base for experiment bottom electrode 8 is connected more stably with the base, but also can change the distance between experiment bottom electrode 8 and experiment top electrode 7 through threaded connection. Therefore, the influence of the gap distance of the electrode on the discharge characteristic is obtained, and the electro-hydraulic effect achieves a better effect.
As a modification of the above solution, with reference to fig. 1, the full-wave rectifier 3 comprises four identical diodes.
The cathode of the first diode is connected with the anode of the second diode, and the anode of the first diode is connected with the anode of the fourth diode.
The cathode of the third diode is connected with the cathode of the second diode, and the anode of the third diode is connected with the cathode of the fourth diode.
The first output end of the step-up transformer 2 is connected between the cathode of the first diode and the anode of the second diode, and the second output end of the step-up transformer 2 is connected between the anode of the third diode and the cathode of the fourth diode.
The experimental upper electrode 7 is connected between the cathode of the third diode and the cathode of the second diode through the air switch TGS; the experimental lower electrode 8 is connected between the anode of the first diode and the anode of the fourth diode.
Specifically, the current passing through the step-up transformer 2 is rectified by using four identical diodes.
As an improvement of the above scheme, the method further comprises the following steps: a protection resistor R1 and a measurement resistor R2; the protection resistor R1 is connected between the first output terminal of the full-wave rectifier 3 and the air switch TGS, and the measurement resistor R2 is connected in parallel across the energy storage capacitor C.
In this embodiment, an ammeter is also connected in series to the second resistor R2.
The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations are also considered as the protection scope of the present invention.
Claims (9)
1. A device for detecting a discharge characteristic of a liquid, comprising: the device comprises a power supply, a step-up transformer, a full-wave rectifier, an energy storage capacitor, an air switch, an experiment box body for containing liquid, an experiment upper electrode, an experiment lower electrode, a voltage measuring device for measuring the voltage of the energy storage capacitor, a current measuring device for measuring the current when the energy storage capacitor discharges, a hydrophone for measuring the discharge shock wave in the liquid in the experiment box body, an upper surface plate for fixing the position of the hydrophone, and an oscilloscope for receiving a measuring signal of the voltage measuring device, a measuring signal of the current measuring device and a measuring signal of the hydrophone;
the input end of the boosting transformer is connected with the power supply, the output end of the boosting transformer is connected with the input end of the full-wave rectifier, and the first output end of the full-wave rectifier is connected with the experimental upper electrode through the air switch; the second output end of the full-wave rectifier is connected with the experimental lower electrode, and the experimental upper electrode and the experimental lower electrode are arranged oppositely;
the first end of the energy storage capacitor is connected between the first output end of the full-wave rectifier and the air switch, and the second end of the energy storage capacitor is connected between the second output end of the full-wave rectifier and the experimental lower electrode;
the upper surface plate is arranged at an opening of the experiment box body, the hydrophone is arranged on one side of the experiment upper electrode through the upper surface plate, and the measuring end of the current measuring device is connected between the second end of the energy storage capacitor and the experiment lower electrode; a first end of the voltage measuring device is connected with a first output end of the full-wave rectifier, and a measuring end of the voltage measuring device is connected between a second output end of the full-wave rectifier and a second end of the energy storage capacitor;
the oscilloscope is respectively connected with the output end of the current measuring device, the output end of the voltage measuring device and the output end of the hydrophone.
2. The apparatus for detecting the discharge characteristics of a liquid according to claim 1, wherein the upper surface plate is provided with a plurality of elongated through holes;
the hydrophone is arranged in any one of the strip-shaped through holes.
3. The apparatus for detecting a discharge characteristic of a liquid according to claim 1, further comprising: a movable base;
the experiment lower electrode is detachably connected to the base, and penetrates through the base to be connected with the second output end of the full-wave rectifier.
4. The apparatus for detecting a discharge characteristic of a liquid according to claim 3, further comprising: the fixing device of the experimental upper electrode and at least four supporting columns;
the experimental upper electrode is inserted in the fixing device, one end of the supporting column is inserted in the fixing device, and the other end of the supporting column is inserted in the base.
5. The apparatus for detecting the discharge characteristics of a liquid according to claim 3, wherein the experimental lower electrode is screwed to the base.
6. The apparatus for detecting the discharge characteristic of a liquid according to claim 1, wherein the full-wave rectifier includes four identical diodes;
the cathode of the first diode is connected with the anode of the second diode, and the anode of the first diode is connected with the anode of the fourth diode;
the cathode of the third diode is connected with the cathode of the second diode, and the anode of the third diode is connected with the cathode of the fourth diode;
a first output end of the boosting transformer is connected between the cathode of the first diode and the anode of the second diode, and a second output end of the boosting transformer is connected between the anode of the third diode and the cathode of the fourth diode;
the experimental upper electrode is connected between the cathode of the third diode and the cathode of the second diode through the air switch; the experimental lower electrode is connected between the anode of the first diode and the anode of the fourth diode.
7. The apparatus for detecting a discharge characteristic of a liquid according to claim 1, further comprising: protection resistance and measurement resistance;
the protection resistor is connected between the first output end of the full-wave rectifier and the air switch, and the measuring resistor is connected in parallel to two ends of the energy storage capacitor.
8. The apparatus for detecting the discharge characteristics of a liquid according to claim 1, wherein said voltage measuring means is a high voltage probe.
9. The apparatus for detecting the discharge characteristics of a liquid according to claim 1, wherein said current measuring means is a rogowski coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921775112.9U CN211603435U (en) | 2019-10-21 | 2019-10-21 | Detection device for liquid discharge characteristics |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921775112.9U CN211603435U (en) | 2019-10-21 | 2019-10-21 | Detection device for liquid discharge characteristics |
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| CN211603435U true CN211603435U (en) | 2020-09-29 |
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| CN201921775112.9U Active CN211603435U (en) | 2019-10-21 | 2019-10-21 | Detection device for liquid discharge characteristics |
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