CN115015711A - EMUs high tension apparatus testing arrangement that discharges - Google Patents
EMUs high tension apparatus testing arrangement that discharges Download PDFInfo
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- CN115015711A CN115015711A CN202210639021.2A CN202210639021A CN115015711A CN 115015711 A CN115015711 A CN 115015711A CN 202210639021 A CN202210639021 A CN 202210639021A CN 115015711 A CN115015711 A CN 115015711A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/005—Testing of electric installations on transport means
- G01R31/008—Testing of electric installations on transport means on air- or spacecraft, railway rolling stock or sea-going vessels
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/003—Environmental or reliability tests
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1218—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing using optical methods; using charged particle, e.g. electron, beams or X-rays
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Abstract
The embodiment of the application discloses EMUs high-voltage equipment testing arrangement that discharges. The device comprises: the system comprises a pressurizing assembly, a motor train unit environment simulation assembly, a test cavity, an ultraviolet imaging assembly and computing equipment; the pressurizing assembly comprises an upper electrode and a lower electrode, the upper electrode and the lower electrode are arranged in the test cavity, and a high-voltage equipment test article of the motor train unit is placed between the upper electrode and the lower electrode; the motor train unit environment simulation assembly is arranged in the test cavity and used for adjusting environmental parameter values in the test cavity; the ultraviolet imaging assembly is connected with the test cavity through the first through hole; monitoring the discharge position and the discharge time of the high-voltage equipment test article of the motor train unit; one end of the lower electrode is connected with a grounding current sensor and is used for measuring the discharge current value of high-voltage equipment of the motor train unit; the computing equipment is used for receiving the discharge data corresponding to the high-voltage equipment test products of the motor train unit and analyzing and displaying the discharge data under different experimental conditions.
Description
Technical Field
The application relates to the technical field of high-voltage experiments, in particular to a discharge testing device for high-voltage equipment of a motor train unit.
Background
When the motor train unit runs in a high-altitude area, the lower air pressure, humidity, temperature and higher ultraviolet irradiation intensity can have adverse effects on devices of each part of the high-voltage system. The low gas pressure causes an increase in the free volume of gas insulation, resulting in a decrease in the insulation discharge voltage of the high voltage system. The discharge voltage of a high-voltage system of the motor train unit is reduced due to ice coating on the surface of the device at low temperature, and the insulation of the high-voltage system is damaged due to high ultraviolet radiation, so that the high-voltage equipment of the motor train unit is easily damaged due to discharge of various environmental factors.
At present, research on the discharge characteristics of high-voltage equipment mainly aims at simulating a single factor which has a large influence on the insulation of a high-voltage system, the discharge characteristic quantity in a discharge test is relatively single, and the research on the comprehensive discharge characteristics of multiple important influence factors in a high-altitude environment of a motor train unit is lacked, so that the discharge data of a relatively accurate motor train unit high-voltage equipment test sample is difficult to obtain.
Disclosure of Invention
The embodiment of the application provides a discharge testing device for high-voltage equipment of a motor train unit, and the discharge testing device is used for solving the following technical problems: the prior art is difficult to obtain more accurate discharge data of the high-voltage equipment test article of the motor train unit.
The embodiment of the application adopts the following technical scheme:
the embodiment of the application provides a EMUs high-tension apparatus testing arrangement that discharges, its characterized in that, the device includes: the system comprises a pressurizing assembly, a motor train unit environment simulation assembly, a test cavity, an ultraviolet imaging assembly and computing equipment; the pressurizing assembly comprises an upper electrode and a lower electrode, the upper electrode and the lower electrode are arranged in the test cavity, and a high-voltage equipment test article of the motor train unit is placed between the upper electrode and the lower electrode; the upper electrode and the lower electrode are used for adjusting the voltage value of the environment where the motor train unit high-voltage equipment test article is located; the motor train unit environment simulation assembly is arranged in the test cavity and used for adjusting environmental parameter values in the test cavity; the environmental parameter value comprises at least a temperature; the ultraviolet imaging assembly is connected with the test cavity through a first through hole; when a thermal radiation heating component in the motor train unit environment simulation assembly dynamically rotates, monitoring the discharge position and the discharge time of a motor train unit high-voltage equipment sample in the cavity in real time; the first through hole is formed in the side wall of the test cavity; one end of the lower electrode is connected with a grounding current sensor, and the grounding current sensor is used for measuring the discharge current value of the high-voltage equipment test article of the motor train unit; the computing equipment is used for receiving discharge data corresponding to the high-voltage equipment test article of the motor train unit and analyzing and displaying the discharge data under different experimental conditions; the discharge data at least comprises any one or more of a voltage value uploaded by the pressurizing assembly, an environment simulation condition in a test cavity uploaded by the motor train unit environment simulation assembly, a discharge position and discharge time uploaded by the ultraviolet imaging assembly and a discharge current value uploaded by the grounding current sensor.
According to the embodiment of the application, the motor train unit high-voltage equipment test is subjected to pressurization adjustment through the pressurization assembly, and the air pressure value, the temperature value, the humidity value and the ultraviolet irradiation intensity value corresponding to the motor train unit high-voltage equipment test are respectively adjusted through the motor train unit running environment simulation assembly. The comprehensive research of various different environmental factors can be carried out, so that the environmental data of the simulated discharge experiment is more accurate. Secondly, the discharge path of the high-voltage equipment test piece of the motor train unit is monitored in real time through the ultraviolet imaging assembly, the discharge process of the test piece can be uploaded to the computing equipment in real time to analyze the discharge process, and long-term safe operation of the motor train is ensured through the obtained analyzed data.
In one implementation manner of the application, the thermal radiation heating member spirally surrounds the high-voltage equipment test article of the motor train unit, and the thermal radiation heating member is not in contact with the high-voltage equipment test article of the motor train unit; a rotatable storage rack is arranged below the thermal radiation heating component, and the thermal radiation heating component is driven to rotate around the high-voltage equipment test article of the motor train unit under the condition that the rotatable storage rack rotates; the thermal radiation heating component is used for raising the temperature of the test cavity so that the temperature in the test cavity reaches the preset temperature of the current discharge test.
In one implementation manner of the application, the upper electrode and the lower electrode are both flat plate electrodes, the thickness of the high-voltage equipment test article of the motor train unit is smaller than 1mm, and the surface area of the high-voltage equipment test article of the motor train unit is larger than the surface area of the upper electrode and larger than the surface area of the lower electrode.
In an implementation manner of the application, when both the upper electrode and the lower electrode are finger electrodes, the diameter of the high-voltage equipment test sample of the motor train unit is greater than or equal to 50 mm.
In an implementation manner of the application, under the condition that the upper electrode and the lower electrode are both rod-plate electrodes, the high-voltage equipment test sample of the motor train unit is a gas insulation test sample.
The discharge testing device for the high-voltage equipment of the motor train unit can test various high-voltage equipment of the motor train unit by selecting the electrodes according to requirements, and the discharge characteristics of the high-voltage equipment of the motor train unit are analyzed by processing multiple discharge characteristic quantities. Meanwhile, the air pressure, the humidity, the high temperature and the low temperature and the ultraviolet irradiation intensity are accurately and conveniently adjusted, and the real use condition of the high-voltage equipment of the motor train unit in actual operation can be reduced to the maximum extent.
In one implementation manner of the application, the motor train unit environment simulation assembly further comprises a liquid nitrogen storage tank; the liquid nitrogen storage tank is placed outside the test cavity and is communicated with the test cavity through a preset second through hole, and liquid nitrogen in the liquid nitrogen storage tank enters the test cavity through the second through hole so as to cool the temperature in the test cavity; wherein, the second through hole is arranged on the side wall of the test cavity.
In one implementation manner of the application, the motor train unit environment simulation assembly further comprises a vacuum pump and an air pressure display meter; the vacuum pump is arranged outside the test cavity and is communicated with the test cavity through a preset third through hole; the preset third through hole is formed in the side wall of the test cavity; the vacuum pump is used for extracting gas molecules in the test cavity so as to adjust the air pressure in the test cavity to an air pressure value preset in a current discharge experiment; the air pressure display meter is connected with the vacuum pump and used for displaying the air pressure value of the test cavity in real time.
In one implementation manner of the application, the motor train unit environment simulation assembly further comprises a spray tower and a humidity controller; the spraying tower is arranged on the inner wall of the bottom of the test cavity, and the humidity controller is arranged outside the test cavity; the humidity controller is used for controlling the water vapor spraying amount of the spraying tower so as to adjust the humidity in the test cavity through the water vapor sprayed by the spraying tower.
In one implementation manner of the present application, the motor train unit environment simulation assembly further includes a plurality of ultraviolet radiation lamps; the ultraviolet radiation lamps are evenly arranged on the inner wall of the top of the test cavity at intervals and are used for adjusting the ultraviolet radiation intensity in the test cavity.
In one implementation of the present application, the pressurizing assembly further includes a voltage dividing resistor and a digital display; the voltage dividing resistor is arranged outside the test cavity and used for adjusting the voltage value of the upper electrode and the voltage value of the lower electrode; the digital display is connected with the divider resistor and displays the voltage value of the environment where the high-voltage equipment test of the motor train unit is located when the high-voltage equipment test of the motor train unit discharges.
The embodiment of the application adopts at least one technical scheme which can achieve the following beneficial effects: according to the embodiment of the application, the motor train unit high-voltage equipment test is subjected to pressurization adjustment through the pressurization assembly, and the air pressure value, the temperature value, the humidity value and the ultraviolet irradiation intensity value corresponding to the motor train unit high-voltage equipment test are respectively adjusted through the motor train unit running environment simulation assembly. The comprehensive research of various different environmental factors can be carried out, so that the environmental data of the simulated discharge experiment is more accurate. Secondly, the discharge path of the high-voltage equipment test piece of the motor train unit is monitored in real time through the ultraviolet imaging assembly, the discharge process of the test piece can be uploaded to a computer in real time to analyze the discharge process, and long-term safe operation of the motor train unit is ensured through the obtained analyzed data.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without any creative effort. In the drawings:
FIG. 1 is a diagram of a discharge test device for high-voltage equipment of a motor train unit provided by an embodiment of the application.
Wherein, the first and the second end of the pipe are connected with each other,
the device comprises a voltage source 1, a transformer 2, a protective resistor 3, a divider resistor 4, a digital display 5, an ultraviolet imager 6, an upper electrode 7, a lower electrode 8, a test cavity 9, a thermal radiation heating component 10, a computing device 11, a liquid nitrogen storage tank 12, an air pressure display 13, a vacuum pump 14, a spray tower 15, a humidity controller 16, a grounding current sensor 17 and an ultraviolet radiation lamp 18.
Detailed Description
The embodiment of the application provides a discharge test device for high-voltage equipment of a motor train unit.
In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any inventive step based on the embodiments of the present disclosure, shall fall within the scope of protection of the present application.
In addition, in the description of the present invention, it is to be understood that the terms "upper", "lower", "top", "inner", "outer", "axial", "radial", and the like, indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, are only used for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integral; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. In the description herein, references to the description of the terms "embodiment," "example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Referring to fig. 1, the embodiment of the application provides a discharge testing device for high-voltage equipment of a motor train unit, which includes a pressurizing assembly, a motor train unit environment simulation assembly, a test cavity 9, an ultraviolet imaging assembly and a computing device 11. The pressurizing assembly comprises an upper electrode 7 and a lower electrode 8, the upper electrode 7 and the lower electrode 8 are arranged in a test cavity 9, and a high-voltage equipment test article of the motor train unit is placed between the upper electrode 7 and the lower electrode 8. The upper electrode 7 and the lower electrode 8 are used for adjusting the voltage value of the environment where the motor train unit high-voltage equipment test article is located.
Further, the motor train unit environment simulation assembly is arranged inside the test cavity 9 and used for adjusting environmental parameter values in the test cavity. For example, the environmental simulation assembly of the motor train unit can adjust the temperature, the humidity, the atmospheric pressure, the ultraviolet irradiation intensity and the like in the test cavity 9.
Further, the ultraviolet imaging assembly is connected with the test cavity 9 through a preset first through hole, so that the discharge position and the discharge time of the high-voltage equipment test article of the motor train unit are monitored in real time when the thermal radiation heating member 10 in the motor train unit environment simulation assembly rotates dynamically.
Further, one end of the lower electrode 8 is connected with a grounding current sensor 17, and the grounding current sensor is used for measuring the discharge current value of the high-voltage equipment test article of the motor train unit. When the test article is discharged, the test article discharge current is acquired through the grounding current sensor 17 and is uploaded to the computing device 11. And recording and arranging the current change curve along with time through the computing equipment 11 to obtain the discharge current and the discharge amount of the test article.
Further, the computing device 11 is used for receiving discharge data corresponding to the high-voltage equipment test products of the motor train unit, and analyzing and displaying the discharge data under different experimental conditions. The discharge data at least comprises any one or more of a voltage value uploaded by the pressurizing assembly, an environment simulation condition in the test cavity uploaded by the motor train unit environment simulation assembly, a discharge position and discharge time uploaded by the ultraviolet imaging assembly, and a discharge current value uploaded by the grounding current sensor 17.
Specifically, when a discharge experiment is performed on a high-voltage device test article of the motor train unit, the test article is fixed between an upper electrode 7 and a lower electrode 8 system in a test cavity 9. And secondly, adjusting the test air pressure through a vacuum pump 14 in the motor train unit environment simulation assembly, and reading the air pressure in the test cavity 9 through a vacuum gauge. And thirdly, opening the computing equipment 11, and respectively adjusting the humidity control assembly and the temperature control assembly through the computing equipment 11, so that the humidity in the test cavity 9 is kept between 10% Rh and 90% Rh, and the temperature in the test cavity is kept between-100 ℃ and +100 ℃. And fourthly, turning on an ultraviolet radiation lamp 18 in the motor train unit environment simulation assembly, and setting ultraviolet radiation intensity through the computing equipment 11 to simulate a strong ultraviolet environment in a high-altitude area. And fifthly, after the test cavity 9 reaches the required temperature, opening the ultraviolet imager 6 to prepare for monitoring the discharge phenomenon and the discharge path of the test article. And sixthly, turning on a power supply, adjusting the voltage of the upper electrode 7 and the voltage of the lower electrode 8 by adjusting the voltage-dividing resistor 4, recording the voltage reading of the digital display 5 at the moment when the test article is discharged, recording and arranging the current time-varying curve of the computing device 11, and obtaining the discharge current and the discharge capacity. And seventhly, after the discharge is finished, arranging a discharge path in the ultraviolet imaging system, and analyzing by combining the voltage reading of the digital display 5 and the discharge current and the discharge amount of the computing device 11.
As an embodiment, referring to fig. 1, the thermal radiation heating member 10 spirally surrounds the high voltage equipment sample of the motor train unit, and the thermal radiation heating member 10 is not in contact with the high voltage equipment sample of the motor train unit. A rotatable rack (not shown in the figure) is arranged below the thermal radiation heating member 10, and the rotatable rack drives the thermal radiation heating member 10 to rotate around the high-voltage equipment test of the motor train unit under the condition of rotation. The thermal radiation heating component 10 is used for raising the temperature of the test cavity so that the temperature in the test cavity reaches the preset temperature of the current discharge test.
Specifically, a rotatable rack is placed at the bottom of the test chamber 9, and a rotatable disk is provided above the rotatable rack, and the heat radiation heating member 10 is fixedly placed on the rotatable disk. Under the condition that the rotatable disc rotates, the thermal radiation heating component 10 can be driven to rotate, and at the moment, the thermal radiation heating component 10 rotates around the motor train unit high-voltage equipment test sample, so that the motor train unit high-voltage equipment test sample can be uniformly heated. The heat radiation heating component 10 is arranged in a hollow mode, spirally surrounds the high-voltage equipment test article of the motor train unit, and cannot be in direct contact with the test article. Because the vacuum state lacks the medium, and the heat transfer is difficult to realize, consequently can let the ambient temperature in the experimental cavity 9 reach experimental temperature through heat radiation heating element, through ambient temperature to the sample intensification.
Further, since the thermal radiation heating member 10 spirally surrounds the high-voltage equipment test sample of the motor train unit, the high-voltage equipment test sample of the motor train unit may be shielded to some extent. When the ultraviolet imaging component carries out discharge monitoring on a motor train unit high-voltage equipment test article, the discharge condition of the shielded part cannot be recorded. Therefore, the heat radiation heating component 10 is rotated, and the ultraviolet imaging component can shoot different parts of the high-voltage equipment test article of the motor train unit respectively in the rotating process, so that the problem that the high-voltage equipment test article of the motor train unit is difficult to completely monitor and shoot due to the fact that a certain part is always shielded is solved.
As an embodiment, referring to fig. 1, the environmental simulation assembly of the motor train unit further includes a liquid nitrogen storage tank 12. The liquid nitrogen storage tank 12 is placed outside the test cavity 9 and is communicated with the test cavity 9 through a preset second through hole, and liquid nitrogen in the liquid nitrogen storage tank 12 enters the test cavity 9 through the second through hole so as to cool the temperature in the test cavity 9. Wherein, the second through hole is arranged on the side wall of the test cavity 9.
Specifically, when the temperature inside the test chamber 9 is adjusted, it may be subjected to a temperature raising process by the heat radiation heating member 10 provided inside the test chamber 9, and a temperature lowering process by nitrogen gas in the liquid nitrogen storage tank 12 provided outside the test chamber 9. A temperature sensor (not shown in the figure) arranged in the test cavity 9 uploads the temperature of the test cavity 9 to the computing device 11 in real time, the computing device 11 compares the obtained temperature with the temperature corresponding to the current experiment requirement, and when the current temperature is lower than the experiment temperature, a start command is sent to the heat radiation heating member 10 to start heating so as to heat the temperature in the test cavity 9. If the current temperature is higher than the experimental temperature, a starting command is sent to the switch valve of the liquid nitrogen storage tank 12 through the computing equipment 11, the switch valve is opened, and the nitrogen in the liquid nitrogen storage tank 12 flows to the test cavity 9 through the switch valve. The liquid nitrogen storage tank 12 is connected with the test cavity 9 through a second through hole, a switch valve of the liquid nitrogen storage tank 12 is connected with a guide pipe, the guide pipe enters the test cavity 9 through the second through hole, and nitrogen passes through the guide pipe to perform the test cavity 9. It should be noted that the conduit wall is sealed against the second bore wall.
In one embodiment, as shown in fig. 1, each of the upper electrode 7 and the lower electrode 8 may be any one of a rod plate electrode, a flat plate electrode, and a finger electrode. The appropriate electrode can be selected according to different requirements to meet the test requirements.
As an embodiment, referring to fig. 1, the upper electrode 7 and the lower electrode 8 are both flat plate electrodes, the thickness of the high-voltage equipment sample of the motor train unit is less than 1mm, and the surface area of the high-voltage equipment sample of the motor train unit is greater than the surface area of the upper electrode and greater than the surface area of the lower electrode.
In one embodiment, referring to fig. 1, when the upper electrode 7 and the lower electrode 8 are both finger-shaped electrodes, the diameter of the high-voltage equipment sample of the motor train unit is greater than or equal to 50 mm.
In one embodiment, referring to fig. 1, when the upper electrode 7 and the lower electrode 8 are both rod-plate electrodes, the high-voltage equipment sample of the motor train unit is a gas insulation sample.
Specifically, the plate electrode sample: the area of the insulating material film sample is required to be larger than that of the upper electrode and the lower electrode, and the thickness of the insulating material film sample is required to be smaller than 1mm (the sample with larger thickness is equivalent to introducing more defects, and the calculated breakdown field strength is lower-the breakdown field strength is from the breakdown voltage/the thickness of the sample, although the breakdown voltage of the thicker sample is higher, the field strength after the breakdown field strength is divided by the larger thickness is not high). Finger electrode sample: the area diameter d of the insulating material film sample is more than or equal to 50 mm. At this time, the discharge does not penetrate the sample, and the current flows from the surface. Rod plate electrode sample: GND means ground, and HV is the high voltage terminal. The gas insulation discharge can be performed, and the discharge detection can be performed by inserting a partition plate in the middle.
As an embodiment, referring to fig. 1, the motor train unit environment simulation assembly further includes a vacuum pump 14 and a barometer 13. The vacuum pump 14 is arranged outside the test cavity 9, and the vacuum pump 14 is communicated with the test cavity 9 through a preset third through hole, wherein the preset third through hole is arranged on the side wall of the test cavity 9. The vacuum pump 14 is used for extracting gas molecules in the test chamber 9, so as to adjust the air pressure in the test chamber 9 to an air pressure value preset in the current discharge experiment. The air pressure display meter 13 is used for displaying the air pressure value of the test cavity 9 in real time.
Specifically, in order to adjust the air pressure value in the test chamber 9 to the air pressure value required in the current experiment, that is, to the air pressure value in accordance with the high altitude environment area, it is necessary to perform a gas extraction process on the test chamber 9. Vacuum pump 14 in this application embodiment sets up in experimental cavity 9's outside, and vacuum pump 14 is connected with the pipe, is provided with the third through-hole on experimental cavity 9's the lateral wall, and this pipe is in experimental cavity 9 through the third through-hole entering, is in under the state that starts at vacuum pump 14, extracts the gas in experimental cavity 9. Meanwhile, an air pressure display meter 13 is arranged outside the test cavity 9 and used for displaying the air pressure value in the test cavity 9 in real time. In addition, the computing device 11 receives the air pressure value in the test cavity 9 in real time, and compares the obtained air pressure value with the air pressure value required by the current experiment, so as to perform on-off control on the vacuum pump 14.
As an embodiment, referring to fig. 1, the motor train unit environment simulation assembly further includes a spray tower 15 and a humidity controller 16. The spraying tower 15 is arranged on the inner wall of the bottom of the test cavity 9, and the humidity controller 16 is arranged outside the test cavity 9. The humidity controller 16 is used for controlling the spraying amount of the water vapor of the spraying tower 15 so as to adjust the humidity in the test chamber 9 by the water vapor sprayed by the spraying tower 15.
Specifically, in order to adjust the humidity in the test cavity 9, the humidity adjustment required by the current experiment is met, that is, the humidity value corresponding to the high altitude environment area is provided with the spray tower 15 in the test cavity 9, water is stored in the spray tower 15 in advance, and when the humidity value in the test cavity 9 does not meet the requirement, the spray tower 15 sprays the pre-stored water, so that the humidity value in the test cavity 9 is improved. The experiment cavity is internally provided with a humidity sensor (not shown in the figure) for transmitting the humidity value in the experiment cavity 9 to the computing equipment 11 and the humidity controller 16 in real time, the computing equipment 11 compares the received humidity value with the preset humidity value, and sends out the information that the humidity value is not in accordance with the humidity value to the humidity controller 16 under the condition that the experiment requirement is not met. At this time, the humidity controller 16 sends a start command to the spray tower 15, and the spray tower 15 starts spraying water vapor to increase the humidity value in the test chamber 9.
As an embodiment, referring to fig. 1, the motor train unit driving environment simulation assembly further includes a plurality of ultraviolet radiation lamps 18. The ultraviolet radiation lamps 18 are evenly arranged on the inner wall of the top of the test cavity 9 at intervals, and the ultraviolet radiation lamps 18 are used for adjusting the ultraviolet radiation intensity in the test cavity 9.
Specifically, a plurality of ultraviolet radiation lamps 18 are installed on the top of the test chamber 9, and the plurality of ultraviolet radiation lamps 18 are arranged in a single row at equal intervals. After the calculation device 11 obtains the ultraviolet irradiation intensity in the test cavity 9, the ultraviolet irradiation intensity is compared with the ultraviolet irradiation intensity required by the current experiment, and a switching command is sent to the ultraviolet radiation lamp 18 according to the comparison result.
As an embodiment, referring to fig. 1, the pressurizing assembly further includes a voltage dividing resistor 4 and a digital display 5. The divider resistor 4 is disposed outside the test chamber 9, and the divider resistor 4 is used to adjust the voltage value of the upper electrode 7 and the voltage value of the lower electrode 8. The digital display 5 is connected with the divider resistor 4 and displays the voltage value of the environment where the high-voltage equipment test of the motor train unit is located when the high-voltage equipment test of the motor train unit discharges.
As an embodiment, referring to fig. 1, the voltage applying assembly further includes a voltage source 1, a transformer 2, and a protection resistor 3. One end of the transformer 2 is connected with the voltage source 1, the other end of the transformer 2 is connected with the protection resistor 3, the transformer 2 is used for converting the voltage value of the voltage source 1 into a voltage value meeting the current discharge experiment condition, and the protection resistor 3 is used for performing current-limiting protection on a circuit corresponding to the pressurizing assembly.
Specifically, after the power supply is turned on, the voltage of the upper electrode 7 and the lower electrode 8 is adjusted by adjusting the voltage dividing resistor 4. And the transformer 2 is connected with the voltage source 1 and is used for adjusting the voltage of the current voltage source 1 to a voltage value meeting the current experimental requirement so as to protect the voltage-increasing circuit. Then, the voltage-dividing resistor 4 is adjusted to adjust the resistance of the circuit, and the voltage value in the circuit is adjusted by the change of the resistance value, so that the voltage value of the environment where the test article is located is adjusted.
The embodiments in the present application are described in a progressive manner, and the same and similar parts among the embodiments can be referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the embodiments of the apparatus, the device, and the nonvolatile computer storage medium, since they are substantially similar to the embodiments of the method, the description is simple, and for the relevant points, reference may be made to the partial description of the embodiments of the method.
The foregoing description of specific embodiments of the present application has been presented. Other embodiments are within the scope of the following claims. In some cases, the actions or steps recited in the claims can be performed in a different order than in the embodiments and still achieve desirable results. In addition, the processes depicted in the accompanying figures do not necessarily require the particular order shown, or sequential order, to achieve desirable results. In some embodiments, multitasking and parallel processing may also be possible or may be advantageous.
The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art to which the embodiments of the present application pertain. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the embodiments of the present application should be included in the scope of the claims of the present application.
Claims (10)
1. The utility model provides a EMUs high-voltage equipment testing arrangement that discharges which characterized in that, the device includes: the system comprises a pressurizing assembly, a motor train unit environment simulation assembly, a test cavity, an ultraviolet imaging assembly and computing equipment;
the pressurizing assembly comprises an upper electrode and a lower electrode, the upper electrode and the lower electrode are arranged in the test cavity, and a high-voltage equipment test article of the motor train unit is placed between the upper electrode and the lower electrode; the upper electrode and the lower electrode are used for adjusting the voltage value of the environment where the motor train unit high-voltage equipment test article is located;
the motor train unit environment simulation assembly is arranged in the test cavity and used for adjusting environmental parameter values in the test cavity; the environmental parameter value comprises at least a temperature;
the ultraviolet imaging assembly is connected with the test cavity through the first through hole so as to monitor the discharge position and the discharge time of the high-voltage equipment test article of the motor train unit in real time when the thermal radiation heating member in the motor train unit environment simulation assembly rotates dynamically;
one end of the lower electrode is connected with a current sensor, and the current sensor is used for measuring the discharge current value of the high-voltage equipment test article of the motor train unit;
the computing equipment is used for receiving discharge data corresponding to the high-voltage equipment test article of the motor train unit and analyzing and displaying the discharge data under different experimental conditions; the discharge data at least comprises any one or more of a voltage value uploaded by the pressurizing assembly, an environment simulation condition in a test cavity uploaded by the motor train unit environment simulation assembly, a discharge position and discharge time uploaded by the ultraviolet imaging assembly, and a discharge current value uploaded by the current sensor.
2. The discharge testing device for the high-voltage equipment of the motor train unit according to claim 1, wherein the thermal radiation heating member spirally surrounds the high-voltage equipment test article of the motor train unit; the heat radiation heating component is not in contact with the high-voltage equipment test article of the motor train unit;
a rotatable storage rack is arranged below the thermal radiation heating component, and the thermal radiation heating component is driven to rotate around the high-voltage equipment test article of the motor train unit under the condition that the rotatable storage rack rotates; the thermal radiation heating component is used for raising the temperature of the test cavity so that the temperature in the test cavity reaches the preset temperature of the current discharge test.
3. The discharge test device for the high-voltage equipment of the motor train unit according to claim 1, wherein the upper electrode and the lower electrode are both flat plate electrodes, the thickness of the high-voltage equipment test sample of the motor train unit is smaller than 1mm, and the surface area of the high-voltage equipment test sample of the motor train unit is larger than the surface area of the upper electrode and larger than the surface area of the lower electrode.
4. The discharge test device for the high-voltage equipment of the motor train unit according to claim 1, wherein the diameter of the high-voltage equipment test sample of the motor train unit is greater than or equal to 50mm under the condition that the upper electrode and the lower electrode are both finger-shaped electrodes.
5. The discharge test device for the high-voltage equipment of the motor train unit according to claim 1, wherein the high-voltage equipment test sample of the motor train unit is a gas insulation test sample under the condition that the upper electrode and the lower electrode are both rod-plate electrodes.
6. The discharge testing device for the high-voltage equipment of the motor train unit according to claim 1, wherein the motor train unit environment simulation assembly further comprises a liquid nitrogen storage tank;
the liquid nitrogen storage tank is placed outside the test cavity and is communicated with the test cavity through a preset second through hole, and liquid nitrogen in the liquid nitrogen storage tank enters the test cavity through the second through hole so as to cool the temperature in the test cavity; wherein, the second through hole is arranged on the side wall of the test cavity.
7. The discharge testing device for the high-voltage equipment of the motor train unit according to claim 1, wherein the motor train unit environment simulation assembly further comprises a vacuum pump and an air pressure display meter;
the vacuum pump is arranged outside the test cavity and is communicated with the test cavity through a preset third through hole; the preset third through hole is formed in the side wall of the test cavity;
the vacuum pump is used for extracting gas molecules in the test cavity so as to adjust the air pressure in the test cavity to an air pressure value preset in a current discharge experiment;
the air pressure display meter is connected with the vacuum pump and used for displaying the air pressure value of the test cavity in real time.
8. The discharge testing device for the high-voltage equipment of the motor train unit according to claim 1, wherein the motor train unit environment simulation assembly further comprises a spray tower and a humidity controller;
the spraying tower is arranged on the inner wall of the bottom of the test cavity, and the humidity controller is arranged outside the test cavity;
the humidity controller is used for controlling the water vapor spraying amount of the spraying tower so as to adjust the humidity in the test cavity through the water vapor sprayed by the spraying tower.
9. The discharge test device for the high-voltage equipment of the motor train unit according to claim 1, wherein the motor train unit environment simulation assembly further comprises a plurality of ultraviolet radiation lamps;
the ultraviolet radiation lamps are evenly arranged on the inner wall of the top of the test cavity at intervals and are used for adjusting the ultraviolet radiation intensity in the test cavity.
10. The discharge testing device for the high-voltage equipment of the motor train unit according to claim 1, wherein the pressurizing assembly further comprises a voltage dividing resistor and a digital display;
the divider resistor is arranged outside the test cavity and used for adjusting the voltage value of the upper electrode and the voltage value of the lower electrode;
the digital display is connected with the divider resistor and displays the voltage value of the environment where the high-voltage equipment test of the motor train unit is located when the high-voltage equipment test of the motor train unit discharges.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210639021.2A CN115015711A (en) | 2022-06-08 | 2022-06-08 | EMUs high tension apparatus testing arrangement that discharges |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210639021.2A CN115015711A (en) | 2022-06-08 | 2022-06-08 | EMUs high tension apparatus testing arrangement that discharges |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115015711A true CN115015711A (en) | 2022-09-06 |
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ID=83072677
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210639021.2A Pending CN115015711A (en) | 2022-06-08 | 2022-06-08 | EMUs high tension apparatus testing arrangement that discharges |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115015711A (en) |
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2022
- 2022-06-08 CN CN202210639021.2A patent/CN115015711A/en active Pending
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