CN115637401A - Water-electricity switching device for plasma spraying and monitoring method thereof - Google Patents
Water-electricity switching device for plasma spraying and monitoring method thereof Download PDFInfo
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- 238000007750 plasma spraying Methods 0.000 title claims abstract description 60
- 238000012544 monitoring process Methods 0.000 title claims abstract description 42
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- 238000012806 monitoring device Methods 0.000 claims abstract description 23
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- 239000008367 deionised water Substances 0.000 description 5
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- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
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Abstract
The invention provides a plasma spraying water-electricity switching device and a monitoring method thereof, relates to the technical field of plasma spraying, and is designed for solving the problem that a coil interferes various electronic elements. The plasma spraying water-electricity switching device comprises a high-frequency arc starting unit with an induction coil internally provided with a magnetic core, a conductivity sensor for monitoring the conductivity of cooling water, a process gas pressure/flow sensor for monitoring the pressure/flow of process gas, temperature sensors for the temperature of the cooling water at a water inlet end and a water return end, pressure sensors for measuring the pressure of the cooling water at the water inlet end and the water return end, a flow sensor for measuring the flow of the cooling water at the water inlet end or the water return end, a voltage sensor for measuring the voltage between a cathode and an anode of a plasma spray gun, and a monitoring device electrically connected with the sensors. The hydroelectric switching device for plasma spraying can convert high-frequency signals into heat energy of the magnetic core, and avoids influence and damage to other electronic components and circuits.
Description
Technical Field
The invention relates to the technical field of plasma spraying, in particular to a water-electricity switching device for plasma spraying and a monitoring method thereof.
Background
The plasma spraying technology originates from the last 60 years, and forms a plurality of types through the development of nearly 60 years, such as atmospheric plasma spraying, controllable atmosphere plasma spraying, liquid material plasma spraying, inner hole plasma spraying, rotary plasma spraying, water-stable plasma spraying and the like, wherein the principle of the technology is that process gas generally being argon is punctured by depending on the positive and negative electrodes at high frequency, high voltage and instantaneous voltage (generally about 9 kV), continuous plasma is generated, and the temperature and the speed of the plasma are improved by stably depending on the mechanical compression and electromagnetic compression coupling action, so that the aim of spraying is fulfilled. The plasma spraying technology is applied to different industrial fields, and can realize the preparation of low-melting-point metal to ultrahigh-temperature ceramic coatings.
Plasma spraying apparatus generally comprises: the water, electric connection and transmission among the plasma power supply, the plasma spray gun, the spray room or the atmosphere cabin are cables which simultaneously transmit cooling water media and high-power electric energy and are called water cables, and the water cables are connected by means of related switching devices to form the water and electricity switching device.
The water and electricity switching device is an important component of plasma spraying equipment, collects cooling water and the positive end of a plasma power supply and then is connected to the positive end of a plasma spray gun through a water and electricity cable, the cooling water passes through the plasma spray gun body and then is connected to a negative water and electricity separation unit through a water and electricity cable from a cathode, the cooling water flows out from a water return end, the negative end is connected to the negative electrode of the plasma power supply, and meanwhile, a high-frequency arc starting unit in the water and electricity switching device controls the arc starting of the plasma spray gun. Parameters such as cooling water parameters (temperature, pressure, flow, conductivity and the like), voltage between a spray gun cathode and an anode, process gas pressure/flow after the process and the like have great influence on the working state and the service life of the plasma spray gun, and in actual production, factors such as process parameter change, equipment failure, manual misoperation and the like often cause premature damage of a cathode-anode wearing part of the spray gun or burning loss of the spray gun; in addition, the faults can also be caused by factors such as sudden faults of the auxiliary cooling water chiller, misoperation of a water/gas valve, attenuation of gas supply pressure and the like, so that parameters of a water path and a gas path which obviously affect the plasma spraying stability and the working safety of a spray gun are improved, and the monitoring and protection of a system are required.
Because the hydroelectric switching device comprises the high-frequency arc starting unit, when the hydroelectric switching device works, on one hand, high-frequency and high-voltage signals are easy to be connected into an electric circuit in series, and the normal work of other electric equipment is influenced; on the other hand, the high-frequency high-voltage signals easily interfere with signals of various sensors in the hydroelectric junction box. The conventional water and electricity switching device can only realize the functions of collecting/separating cooling water and a power supply and starting an arc at high frequency, does not have the functions of monitoring relevant parameters (temperature, pressure, flow and conductivity) of the cooling water, relevant parameters (cathode and anode voltage, process gas flow/pressure) of a plasma spray gun and the like, and does not have the function of effectively protecting the plasma spray gun; the induction coil in the high-frequency arc starting unit usually adopts a hollow induction coil, so that high-frequency high-voltage signals are easily connected into other electric circuits in series during high-frequency arc starting, and interference to various sensors is easily caused.
Disclosure of Invention
The invention aims to provide a water-electricity switching device for plasma spraying, which aims to solve the technical problem that the existing coil generates interference on various electronic elements.
The invention provides a water and electricity switching device for plasma spraying, which comprises a high-frequency arc starting unit, wherein the high-frequency arc starting unit comprises an induction coil, and a magnetic core is arranged in the induction coil.
The hydroelectric switching device for plasma spraying has the advantages that:
through set up the magnetic core in induction coil inside, produce the magnetic field of alternation in the magnetic core, can reduce the influence of induction coil instantaneous superhigh pressure when high frequency ignition, turn into the heat energy of magnetic core with high frequency signal, avoid causing influence and harm to other electronic component and circuit.
In a preferred technical scheme, the cooling water system further comprises a conductivity sensor, and the conductivity sensor is used for monitoring the conductivity of the cooling water.
In a preferred technical scheme, the device further comprises a pressure sensor, wherein the process gas pressure sensor is used for monitoring the pressure of the process gas.
In a preferred technical scheme, the device further comprises a process gas flow sensor, wherein the process gas flow sensor is used for monitoring the flow of the process gas.
In a preferred technical scheme, the device further comprises a monitoring device, a temperature sensor, a pressure sensor, a flow sensor and a voltage sensor, wherein the temperature sensor, the pressure sensor, the flow sensor and the voltage sensor are electrically connected with the monitoring device; the temperature sensor is used for measuring the temperature of cooling water at the water inlet end and the water return end; the pressure sensor is used for measuring the pressure of cooling water at a water inlet end and a water return end; the flow sensor is used for measuring the flow of cooling water at the water inlet end and the water return end; the voltage sensor is used for measuring the voltage value between the cathode and the anode of the plasma spray gun.
The second objective of the present invention is to provide a monitoring method for a plasma spraying water-electricity switching device, so as to solve the technical problem in the prior art that a plasma arc is suddenly interrupted due to gas exhaustion to cause gun burnout or damage.
The invention provides a monitoring method of a water-electricity switching device for plasma spraying, which is used for monitoring the water-electricity switching device for plasma spraying, and the monitoring method comprises the following steps: when the plasma spray gun works normally, the monitoring device obtains signals of the process gas flow sensor and the process gas pressure sensor, and if the signals of the process gas flow sensor and the process gas pressure sensor exceed a preset range, an alarm signal is output and/or an interrupt signal is output.
The monitoring method of the hydroelectric switching device for plasma spraying has the following beneficial effects:
the flow and the pressure of the process gas are monitored when the plasma spray gun works normally, and when the pressure and/or the flow exceed the preset range, the output of an alarm signal or an interrupt signal is controlled, so that the phenomenon that the spray gun is burnt or damaged due to the sudden interruption of the plasma arc caused by the exhaustion of the gas can be reduced.
In a preferred technical scheme, before the plasma spraying water-electricity switching device is electrified and a plasma spray gun works normally, the monitoring device obtains the conductivity of the cooling water, and if the conductivity exceeds a preset range, an alarm signal is output and/or an interrupt signal is output.
In a preferred technical scheme, before the plasma spray coating water-electricity switching device is electrified and a plasma spray gun finishes normal work, the monitoring device obtains signals of the temperature sensor, the pressure sensor, the flow sensor and the voltage sensor, and if the temperature of the cooling water, the pressure of the cooling water, the flow of the cooling water and the voltage value between the cathode and the anode of the plasma spray gun exceed preset ranges, an interrupt signal is output and/or an alarm signal is output.
In a preferred technical scheme, after the plasma spraying water-electricity switching device is connected with the plasma spray gun, the plasma spraying water-electricity switching device sequentially connects cooling water, process gas and a plasma power supply to the plasma spray gun.
In a preferred embodiment, the outputting the interrupt signal includes cutting off an output of the plasma power supply and an input of the process gas.
By arranging the plasma spraying hydroelectric switching device in the monitoring method of the plasma spraying hydroelectric switching device, correspondingly, the monitoring method of the plasma spraying hydroelectric switching device has all the advantages of the plasma spraying hydroelectric switching device, and the details are not repeated.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments or the background art of the present invention, the drawings needed to be used in the description of the embodiments or the background art will be briefly introduced below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a water-electricity switching device for plasma spraying according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a monitoring device of a water-electricity switching device for plasma spraying according to an embodiment of the present invention connected to various sensors;
fig. 3 is a schematic flow chart of a monitoring method of a water-electricity switching apparatus for plasma spraying according to a second embodiment of the present invention.
Description of the reference numerals:
10-a case body; 20-a positive hydropower collection unit; 30-a negative hydro-electric separation unit; 40-a high-frequency arc starting unit; 401-high voltage transformer; 402-high voltage reactor; 403-capacitance; 404-an induction coil; 405-a capacitive gap discharger; 406-a magnetic core; 501-a first temperature sensor; 502-a second temperature sensor; 601-a first pressure sensor; 602-a second pressure sensor; 70-a flow sensor; 80-a voltage sensor; 90-a monitoring device; 1001-conductivity sensor; 1002-process gas pressure/flow sensor.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The first embodiment is as follows:
fig. 1 is a schematic structural diagram of a water-electricity switching device for plasma spraying according to an embodiment of the present invention. As shown in fig. 1, a hydroelectric power switching apparatus for plasma spraying according to an embodiment of the present invention includes a high-frequency arc starting unit 40, where the high-frequency arc starting unit 40 includes an induction coil 404, and a magnetic core 406 is disposed inside the induction coil 404.
In this embodiment, the plasma spraying hydroelectric switching device comprises a machine box body 10, a positive electrode hydroelectric collecting unit 20, a negative electrode hydroelectric separating unit 30 and the high-frequency arc starting unit 40, wherein the machine box body 10 provides a mounting base for the positive electrode hydroelectric collecting unit 20, the negative electrode hydroelectric separating unit 30, the high-frequency arc starting unit 40 and the parts; the positive electrode water and electricity collecting unit 20 is used for collecting the cooling water at the water inlet end and the positive electrode wiring end of the power supply together and then is connected with the positive electrode end of the plasma spray gun through a water cable; and the negative electrode water and electricity separation unit 30 is used for separating cooling water in the water cable connected with the cathode end of the plasma spray gun from the cable, outputting the cooling water to a water return end, and connecting the cable with the negative electrode wiring end of the power supply.
Specifically, the high-frequency arc starting unit 40 includes a high-voltage transformer 401, a high-voltage reactor, a capacitor 403, an induction coil 404 and a capacitor gap discharger 405, wherein a magnetic core 406 is arranged inside the induction coil 404, and the magnetic core 406 is prepared by processing and preparing nano ferrite powder through a powder metallurgy technology.
By arranging the magnetic core 406 inside the induction coil 404, an alternating magnetic field is generated in the magnetic core 406, so that the influence of instantaneous extra high voltage of the induction coil 404 can be reduced during high-frequency ignition, a high-frequency signal is converted into heat energy of the magnetic core 406, and the influence and damage to other electronic components and circuits are avoided.
Fig. 2 is a schematic structural diagram of a monitoring device of a water-electricity switching device for plasma spraying according to an embodiment of the present invention, which is connected to various sensors; as shown in fig. 2, it is preferable that a conductivity sensor 1001 is further included, and the conductivity sensor 1001 is used to monitor the conductivity of the cooling water. Specifically, the conductivity sensor 1001 may be provided on an additionally provided water tank (not shown) connected to the plasma spray hydro-electric relay device to detect the conductivity of the cooling water in the water tank.
By arranging the conductivity sensor 1001, the quality of the deionized water as cooling water can be monitored, the normal condition is small, the conductivity is less than or equal to 5 muS/cm, and if the conductivity is greater than the value, the ions which are possibly scaled in the deionized water are excessive. The system will automatic alarm and suggestion washing refrigeration plant water tank and change deionized water to reduce the deposit of incrustation scale at the inside cooling water course of spray gun, reduce the cooling water course conductance area and reduce and take place the risk of blockking up.
As shown in fig. 1 and 2, it is preferable to further include a process gas pressure sensor (not shown) for monitoring the pressure of the process gas. Wherein a process gas pressure sensor may be provided on an additionally provided gas pipe for supplying gas to the plasma torch to monitor the pressure of the supplied process gas.
The specific pressure lower limit value of the process gas can be determined according to specific process parameters, and the process gas is not limited in a unified manner.
The pressure of the process gas is monitored by the process gas pressure sensor, the pressure of the process gas can be collected during working, and an alarm is given when the pressure of the process gas is too low, so that the phenomenon that the plasma arc is suddenly interrupted due to gas exhaustion to cause gun burnout or damage during high-power working is avoided.
As shown in fig. 1 and 2, it is preferable to further include a process gas flow sensor (not shown) for monitoring the flow of the process gas. Wherein, a process gas flow sensor may be provided on an additionally configured gas pipe for supplying gas to the plasma torch to monitor the flow rate of the supplied process gas.
The flow lower limit value of the specific process gas can be determined according to specific process parameters, and the flow lower limit value is not limited in the application.
The process gas flow sensor is arranged to monitor the flow of the process gas, the flow of the process gas can be collected during working, and an alarm is given when the flow of the process gas is too low, so that the phenomenon that the plasma arc is suddenly interrupted due to gas exhaustion to cause gun burnout or damage during high-power working is avoided.
As shown in fig. 1 and 2, it is preferable that a monitoring device 90, a temperature sensor, a pressure sensor, a flow sensor 70 and a voltage sensor 80 are further included, and the temperature sensor, the pressure sensor, the flow sensor 70 and the voltage sensor 80 are electrically connected to the monitoring device 90; the temperature sensor is used for measuring the temperature of cooling water at the water inlet end and the water return end; the pressure sensor is used for measuring the pressure of cooling water at the water inlet end and the water return end; the flow sensor 70 is used for measuring the flow of cooling water at the water inlet end and the water return end; the voltage sensor 80 is used for measuring a voltage value between the cathode and the anode of the plasma torch.
The monitoring device 90 may be a controller or a processor, and more specifically, an industrial PLC (programmable logic controller). The temperature sensors comprise a first temperature sensor 501 and a second temperature sensor 502, the first temperature sensor 501 is arranged at the water inlet end of the cooling water and used for monitoring the water temperature at the water inlet end of the cooling water, and the second temperature sensor 502 is arranged at the water return end of the cooling water and used for monitoring the water temperature at the water return end of the cooling water; the pressure sensor comprises a first pressure sensor 601 and a second pressure sensor 602, the first pressure sensor 601 is arranged at the water inlet end of the cooling water and used for monitoring the water pressure at the water inlet end of the cooling water, and the second pressure sensor 602 is arranged at the water return end of the cooling water and used for monitoring the water pressure at the water return end of the cooling water; the flow sensor 70 may be installed at a water inlet end or a water return end of the cooling water to monitor the flow of the cooling water; and a voltage sensor 80 may be connected between the cathode and the anode of the plasma torch to monitor the voltage of both.
The monitoring device 90 is connected with the sensors for monitoring various parameters, so that corresponding parameters can be obtained, and when the plasma spray gun works, if the pressure, the flow and the temperature of cooling water and the voltage between the cathode and the anode of the plasma spray gun are abnormal, the parameters can be fed back to the monitoring device 90, so that interruption can be timely carried out, and the problem of product processing quality caused by plasma spraying under inaccurate process parameters can be avoided.
The operation principle of the embodiment is as follows:
when the water-electricity switching device for plasma spraying works, the positive ends of cooling water and a plasma power supply pass through the positive water-electricity collecting unit 20 and then are connected to the anode of a plasma spray gun through a water-electricity cable; after passing through a plasma spray gun, the cathode is connected into a cathode water-electricity separation unit 30 through a water cable, cooling water flows out from a water return end, and the cathode end is connected with the cathode of a plasma power supply; when the plasma spray gun starts arc, under the action of the high-frequency arc starting unit 40, an electric arc is generated between the cathode and the anode of the plasma spray gun, and the current of the positive end of the plasma power supply flows back to the negative end of the plasma power supply after passing through the positive water and electricity collecting unit 20, the plasma spray gun and the negative water and electricity separating unit 30.
For how the monitoring device 90 monitors various parameters, reference may be made to the description of the second embodiment, which is not described herein again. It should be noted that, from top to bottom, the first dotted rectangle in the right column in fig. 2 represents the sensor disposed at the water inlet end of the cooling water, the second dotted rectangle represents the sensor disposed at the water return end of the cooling water, and the fourth dotted rectangle represents the sensor connected to the relevant interface of the plasma torch, wherein the process gas flow sensor and the process gas pressure sensor are collectively represented as a process gas pressure/flow sensor 1001.
The second embodiment:
fig. 3 is a schematic flow chart of a monitoring method of a water-electricity switching apparatus for plasma spraying according to a second embodiment of the present invention. As shown in fig. 3, a second embodiment provides a monitoring method for a plasma spraying hydroelectric power adaptor, which is used for monitoring the plasma spraying hydroelectric power adaptor, and the monitoring method includes: when the plasma torch is working normally, the monitoring device 90 obtains the signals of the process gas flow sensor and the process gas pressure sensor, and outputs an alarm signal and/or an interrupt signal if the signals of the process gas flow sensor and the process gas pressure sensor exceed a preset range.
The flow and the pressure of the process gas are monitored when the plasma spray gun works normally, and when the pressure and/or the flow exceed the preset range, the output of an alarm signal or an interrupt signal is controlled, so that the burning or damage of the spray gun caused by the sudden interruption of the plasma arc due to the gas exhaustion can be reduced.
Preferably, the monitoring device 90 obtains the conductivity of the cooling water before the plasma spray gun works normally after the power-on of the water-electricity switching device for plasma spraying is started, and outputs an alarm signal and/or an interrupt signal if the conductivity exceeds a preset range.
And monitoring the conductivity, and if the conductivity is larger than the preset range, indicating that the amount of ions which can form scales in the deionized water is too large. The system will automatic alarm and suggestion washing refrigeration plant water tank and change deionized water to reduce the deposit of incrustation scale at the inside cooling water course of spray gun, reduce the cooling water course conductance area and reduce and take place the risk of blockking up.
Preferably, the monitoring device 90 obtains signals of the temperature sensor, the pressure sensor, the flow sensor 70 and the voltage sensor 80 before the plasma spray coating water-electricity switching device is powered on until the plasma spray gun finishes normal operation, and outputs an interrupt signal and/or an alarm signal if the temperature of the cooling water, the pressure of the cooling water, the flow of the cooling water and the voltage value between the cathode and the anode of the plasma spray gun exceed a preset range.
By monitoring the parameters, the running state of cooling water can be ensured to be normal before the plasma spray gun works and in the working process of the spray gun, and the phenomenon that the plasma spray gun and the plasma spraying water-electricity switching device are overheated to cause damage in the working process is avoided.
Preferably, after the water-electricity switching device for plasma spraying is connected to the plasma spray gun, the water-electricity switching device for plasma spraying sequentially connects the cooling water, the process gas and the plasma power source to the plasma spray gun.
Cooling water is firstly introduced, so that the water-electricity switching device for plasma spraying and the plasma spray gun can be ensured to be in a state of being cooled, and the safety of system operation is improved; and then the process gas is connected, so that the corresponding space can be filled with the process gas, and finally the plasma power supply is connected, so that larger power can be generated on the basis that the space is filled with the gas and the cooling water flows smoothly, and the plasma spray gun is prevented from being burnt.
Preferably, outputting the interrupt signal comprises switching off the plasma power supply output and the process gas input.
When the interrupt signal is output, the plasma power supply is cut off, so that the safety of the system can be ensured, and the unnecessary consumption of the process gas can be reduced and the utilization rate of the gas can be improved by cutting off the input of the process gas. As for the cooling water, the cooling water is not cut off after the interruption signal is output, so that the plasma spray gun is cooled to a suitable temperature range for maintenance personnel to overhaul.
Specifically, the monitoring method of the plasma spraying water-electricity switching device comprises the following steps according to time sequence:
1) Initializing the system after the system is powered on, and carrying out self-checking;
2) Detecting whether signals of sensors such as a cooling water temperature sensor, a cooling water pressure sensor, a cooling water flow and the like are normal or not, if the signals are abnormal, outputting interruption and alarm signals, and checking and troubleshooting the corresponding sensors or circuits;
3) Setting or confirming the working parameters of the spray gun according to the model of the selected plasma spray gun;
4) Detecting whether the electric conductivity of the cooling water is within a set range (less than or equal to 5 mu S/cm), and if the electric conductivity of the cooling water is beyond the set range, outputting an interruption and alarm signal, wherein the cooling water needs to be replaced;
5) Cooling water is introduced into the plasma spray gun to form a circulating cooling loop;
6) Sequentially detecting the temperature, flow and pressure of the water inlet end and the water return end of the cooling water, outputting an interruption or alarm signal if the temperature, flow and pressure of the water inlet end and the water return end of the cooling water exceed the range, and revising parameters or checking and troubleshooting equipment such as a cooling water channel, a water cooler and the like;
7) Introducing process gas into the plasma spray gun;
8) Detecting whether the pressure/flow of the process gas is within a set range, if the pressure/flow of the process gas is beyond the set range, outputting an interruption or alarm signal, and resetting process gas input parameters or detecting faults of a gas circuit and the like;
9) Connecting a power supply to the plasma spray gun, and starting arc at high frequency;
10 Detecting whether the voltage between the cathode and the anode of the spray gun is in a set range, if the voltage exceeds the set range, outputting an interruption or alarm signal, and needing to adjust the process gas components or check the output characteristics of a power supply and other faults;
11 ) the plasma torch enters a normal operating state;
12 In the working process of the plasma spray gun, the monitoring device 90 periodically and sequentially detects parameters of cooling water, such as water inlet end temperature, water return end temperature, flow, water inlet end pressure, water return end pressure and the like, and whether process gas pressure/flow parameters and spray gun inter-cathode-anode voltage parameters are in a set range, if the process gas pressure/flow parameters and spray gun inter-anode voltage parameters are out of the set range, an interrupt signal/an alarm signal is output, plasma power supply output and secondary process gas input are cut off, and an operator is prompted to perform relevant operations such as checking, stopping and the like.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.
In the above embodiments, the descriptions of the orientations such as "up", "down", and the like are based on the drawings.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention.
Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The hydroelectric switching device for plasma spraying is characterized by comprising a high-frequency arc starting unit (40), wherein the high-frequency arc starting unit (40) comprises an induction coil (404), and a magnetic core (406) is arranged inside the induction coil (404).
2. The marine electrical relay device for plasma spraying according to claim 1, further comprising a conductivity sensor (1001), the conductivity sensor (1001) being configured to monitor the conductivity of the cooling water.
3. The hydro-electric adapter for plasma spray coating according to claim 2 further comprising a process gas pressure sensor for monitoring a pressure of a process gas.
4. The hydro-electric relay device for plasma spray coating according to claim 2, further comprising a process gas flow sensor for monitoring a flow of a process gas.
5. The water-electricity switching device for plasma spraying according to any one of claims 1 to 4, further comprising a monitoring device (90), a temperature sensor, a pressure sensor, a flow sensor (70), and a voltage sensor (80), wherein the temperature sensor, the pressure sensor, the flow sensor (70), and the voltage sensor (80) are electrically connected to the monitoring device (90); the temperature sensor is used for measuring the temperature of the cooling water at the water inlet end and the water return end; the pressure sensor is used for measuring the pressure of the cooling water at the water inlet end and the water return end; the flow sensor (70) is used for measuring the flow of the cooling water at the water inlet end or the water return end; the voltage sensor (80) is used for measuring a voltage value between a cathode and an anode of the plasma torch.
6. A method of monitoring a plasma spray hydro-electric relay device, for monitoring the plasma spray hydro-electric relay device according to any one of claims 2 to 5, the monitoring method comprising: when the plasma spray gun normally works, a monitoring device (90) obtains signals of the process gas flow sensor and the process gas pressure sensor, and if the signals of the process gas flow sensor and the process gas pressure sensor exceed a preset range, an alarm signal is output and/or an interrupt signal is output.
7. The monitoring method of a plasma spraying water-electricity switching device according to claim 6, wherein the monitoring device (90) obtains the conductivity of the cooling water before the plasma spraying water-electricity switching device is powered on and a plasma spray gun is normally operated, and outputs an alarm signal and/or an interrupt signal if the conductivity exceeds a preset range.
8. The monitoring method of a plasma spraying water-electricity switching apparatus according to claim 6, wherein the monitoring apparatus (90) obtains signals of the temperature sensor, the pressure sensor, the flow sensor (70) and the voltage sensor (80) before the plasma spray gun is powered on and finishes normal operation, and outputs an interrupt signal and/or outputs an alarm signal if the temperature of the cooling water, the pressure of the cooling water, the flow of the cooling water and the voltage value between the cathode and the anode of the plasma spray gun are out of a preset range.
9. The method for monitoring the plasma spraying water-electricity switching device according to claim 6, wherein after the plasma spraying water-electricity switching device is connected to the plasma torch, the plasma spraying water-electricity switching device sequentially connects cooling water, process gas, and a plasma power source to the plasma torch.
10. The method of claim 6, wherein the output interrupt signal comprises cutting off the plasma power output and the process gas input.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211173981.0A CN115637401A (en) | 2022-09-26 | 2022-09-26 | Water-electricity switching device for plasma spraying and monitoring method thereof |
Applications Claiming Priority (1)
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| CN202211173981.0A CN115637401A (en) | 2022-09-26 | 2022-09-26 | Water-electricity switching device for plasma spraying and monitoring method thereof |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009028190A1 (en) * | 2009-08-03 | 2011-02-10 | Leibniz-Institut für Plasmaforschung und Technologie e.V. | Cold plasma beam producing device i.e. plasma hand-held device, for microplasma treatment of materials for e.g. cosmetic purpose, has high frequency-generator, coil, body and high voltage-electrode integrally arranged in metal housing |
| CN204455266U (en) * | 2015-03-03 | 2015-07-08 | 贵州黎阳装备科技发展有限公司 | Plasma spraying equipment water power switch |
| CN204455265U (en) * | 2015-03-03 | 2015-07-08 | 贵州黎阳装备科技发展有限公司 | Plasma spraying equipment high-frequency high-voltage arc striking |
| CN110213873A (en) * | 2019-05-29 | 2019-09-06 | 中国航天空气动力技术研究院 | A kind of water power coupling arrangement for arc plasma generator |
-
2022
- 2022-09-26 CN CN202211173981.0A patent/CN115637401A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009028190A1 (en) * | 2009-08-03 | 2011-02-10 | Leibniz-Institut für Plasmaforschung und Technologie e.V. | Cold plasma beam producing device i.e. plasma hand-held device, for microplasma treatment of materials for e.g. cosmetic purpose, has high frequency-generator, coil, body and high voltage-electrode integrally arranged in metal housing |
| CN204455266U (en) * | 2015-03-03 | 2015-07-08 | 贵州黎阳装备科技发展有限公司 | Plasma spraying equipment water power switch |
| CN204455265U (en) * | 2015-03-03 | 2015-07-08 | 贵州黎阳装备科技发展有限公司 | Plasma spraying equipment high-frequency high-voltage arc striking |
| CN110213873A (en) * | 2019-05-29 | 2019-09-06 | 中国航天空气动力技术研究院 | A kind of water power coupling arrangement for arc plasma generator |
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| 张发 主编: "《纳米结构热喷涂涂层制备、表征及其应用》", vol. 1, 哈尔滨工业大学出版社, pages: 237 - 13 * |
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Application publication date: 20230124 |