CN114924125A - Insulation resistance testing device and insulation resistance testing method - Google Patents
Insulation resistance testing device and insulation resistance testing method Download PDFInfo
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- CN114924125A CN114924125A CN202210546221.3A CN202210546221A CN114924125A CN 114924125 A CN114924125 A CN 114924125A CN 202210546221 A CN202210546221 A CN 202210546221A CN 114924125 A CN114924125 A CN 114924125A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/025—Measuring very high resistances, e.g. isolation resistances, i.e. megohm-meters
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D27/00—Simultaneous control of variables covered by two or more of main groups G05D1/00 - G05D25/00
- G05D27/02—Simultaneous control of variables covered by two or more of main groups G05D1/00 - G05D25/00 characterised by the use of electric means
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Abstract
The invention relates to the technical field of insulation electronic detection, in particular to an insulation resistance testing device and an insulation resistance testing method. The invention can accurately detect the resistance value of the insulation resistor with special use when the insulation resistor is used in the environment with special temperature and special humidity by placing the insulation resistor in the environment with special humidity and special temperature for detection, and judges whether the detected insulation resistor works in the environment with special temperature and special humidity by simulating the temperature and the humidity in the environment where the insulation resistor is used, so that the detection result is more fit for the actual use condition.
Description
Technical Field
The invention relates to the technical field of insulation electronic detection, in particular to an insulation resistance testing device and an insulation resistance testing method.
Background
Insulation resistance is the most basic insulation index for electrical equipment and electrical lines. For the handover test of low-voltage electrical devices, the insulation resistance of motors, distribution equipment and distribution lines should not be lower than 0.5M Ω at normal temperature (for equipment and lines in operation, the insulation resistance should not be lower than 1M Ω/kV). The insulation resistance of the low-voltage electrical apparatus, the connecting cable and the secondary loop thereof is generally not lower than 1M omega; should not be less than 0.5M Ω in a relatively humid environment; the insulation resistance of the small bus of the secondary circuit should not be lower than 10M omega. The insulation resistance of a class I hand held power tool should not be below 2M omega.
The resistance of insulation resistance receives temperature and humidity to influence greatly, when the PCB at insulation resistance place was in the operation under special temperature and humidity, whether PCB can normal stable operation, except that other electronic components can the stable performance function, whether insulation resistance can provide normal resistance also be the key point that PCB can normal operating, consequently detect whether insulation resistance can provide normal stable resistance under specific temperature and humidity and become the problem that needs to solve urgently.
Disclosure of Invention
The present invention is directed to an insulation resistance testing apparatus and an insulation resistance testing method, so as to solve the problems in the background art. In order to achieve the purpose, the invention provides the following technical scheme: an insulation resistance testing device comprises a detection mechanism, a temperature control mechanism and a humidity control mechanism, wherein the detection mechanism, the temperature control mechanism and the humidity control mechanism are all fixedly arranged at the top of a base, and the temperature control mechanism and the humidity control mechanism are all communicated with the detection mechanism;
the detection mechanism comprises a detection box, two identical bayonets are symmetrically formed in the center positions of two sides of the detection box, and a sealing cover is clamped and mounted at the top of the detection box;
the temperature detection mechanism comprises a temperature control box, a partition plate is fixedly installed on the inner wall of the temperature control box, the partition plate divides the interior of the semiconductor refrigeration sheet into two mutually closed spaces, a plurality of semiconductor refrigeration sheets are embedded and installed on the partition plate, the partition plate penetrates through the semiconductor refrigeration sheets, the refrigeration end of the partition plate is located in the space, close to the detection box, in the temperature control box, and the heating interruption of the partition plate is located in the space, far away from the detection box, in the temperature control box;
the humidity control mechanism comprises a water tank, an electric heating sheet is fixedly mounted at the lower end of the inner wall of the water tank, a water filling port is mounted at the top end of the water tank in a communicated mode, a water filling valve is mounted on the water filling port in a communicated mode, a pressure relief pipe is mounted at the top of the water tank in a communicated mode, and a pressure relief valve is mounted on the pressure relief pipe in a communicated mode.
Preferably, the inner wall of the detection box is provided with a temperature and humidity sensor, the temperature and humidity sensor is electrically connected with a temperature and humidity controller, the temperature and humidity controller is fixedly installed on the outer wall of the detection box, and an auxiliary electric heating pipe is arranged inside the detection box.
Preferably, the top ends of two sides of the detection box are provided with first clamping parts, two sides of the lower end of the sealing cover are provided with second clamping parts matched with the first clamping parts, and the other side of the sealing cover is provided with a limiting part.
Preferably, the temperature control box sets up with heating pipe and detection case intercommunication through the refrigeration pipe, the lateral wall that the detection case is close to at the temperature control box is set up to the refrigeration pipe, the lateral wall of detection case is kept away from at the temperature control box to the heating pipe setting, be provided with the refrigeration valve on the refrigeration pipe, be provided with the heating valve on the heating pipe, the refrigeration pipe with the pipeline fan is all being installed in the inside of arranging the temperature control box in to the heating pipe intercommunication, the pipeline fan passes through frame fixed mounting at the inner wall of temperature control box.
Preferably, a refrigeration circulating pipe is installed in the temperature control box and is communicated with the top of the space close to the detection box, a refrigeration circulating valve is arranged on the refrigeration circulating pipe, a heating circulating pipe is installed in the temperature control box and is communicated with the top of the space far away from the detection box, and a heating circulating valve is arranged on the heating circulating pipe.
Preferably, the water tank is communicated with the detection box through a steam inlet pipe, the steam inlet pipe is arranged at the top of the water tank, and a steam inlet valve is arranged on the steam inlet pipe.
Preferably, the side wall of the water tank is communicated with and provided with a liquid level device.
Preferably, the temperature and humidity controller is electrically connected with the semiconductor refrigeration sheet, the refrigeration valve, the heating valve, the pipeline fan refrigeration circulating valve, the heating circulating valve electric heating sheet and the steam inlet valve.
Preferably, the insulation resistance testing method of the insulation resistance testing device includes the following steps:
s1, placing a resistor to be tested, firstly, sliding and opening a sealing cover to display two bayonets, then, respectively placing two wiring terminals of the insulation resistor in the two bayonets, and then, pushing the sealing cover to close a detection box;
s2, temperature regulation, namely controlling the semiconductor refrigerating sheet through a temperature and humidity controller to realize temperature rise and temperature reduction, wherein the temperature regulation step is as follows;
a. heating, controlling a pipeline fan on a refrigerating pipe to work through a temperature and humidity controller, sucking air in a detection box into a temperature control box through the pipeline fan on the refrigerating pipe, controlling a refrigerating valve and a refrigerating circulating valve to open a refrigerating valve and a refrigerating circulating valve to discharge the air in a space close to one side of the detection box in the temperature control box through the refrigerating circulating pipe, controlling a heating valve and a heating circulating valve to open through the temperature and humidity controller, opening a heating pipe, blowing gas in a space far away from the detection box in the temperature control box into the detection box through the pipeline fan on the heating pipe, controlling a semiconductor refrigerating sheet to work through the temperature and humidity controller, enabling a refrigerating end of the semiconductor refrigerating sheet to be close to the detection box, enabling a heating end of the semiconductor refrigerating sheet to be far away from the detection box, reducing the temperature of the space close to one side of the detection box in the semiconductor refrigerating sheet, and increasing the temperature of the space far away from one side of the detection box, the pipeline fan on the heating pipe blows hot air into the detection box to realize temperature rise, gas with overhigh temperature in the detection box enters a space, close to the detection box, in the semiconductor refrigeration sheet and is exhausted through the refrigeration circulation pipe, the temperature and humidity sensor senses the temperature in the detection box, when the temperature in the detection box reaches a set value of the temperature and humidity controller, the temperature and humidity sensor converts a temperature signal into an electric signal and transmits the electric signal to the temperature and humidity controller, the temperature and humidity controller receives the electric signal of the temperature and humidity sensor and then controls all the electronic components involved in temperature rise to stop working, when the temperature in the detection box is smaller than the set value of the temperature and humidity controller, the temperature and humidity sensor converts the temperature signal into an electric signal and transmits the electric signal to the temperature and humidity controller, and the temperature and humidity controller receives the electric signal of the temperature and humidity sensor and then controls all the electronic components involved in temperature rise to start working;
b. cooling, controlling a refrigerating valve, a heating valve, a refrigerating circulating valve and a heating circulating valve to open through a temperature and humidity controller, controlling a pipeline fan on a heating pipe to suck air in a detection box into a space far away from one side of the detection box in the temperature control box through the temperature and humidity controller, increasing the air pressure of the space at the moment, discharging redundant air through a heating circulating pipe, controlling the pipeline fan on the refrigerating pipe to work through the temperature and humidity controller, guiding the air in the space close to one side of the detection box in the temperature control box into the detection box, reducing the air pressure in the space close to one side of the detection box in the temperature control box at the moment, introducing external air through the refrigerating circulating pipe to realize air pressure balance, starting a semiconductor refrigerating sheet to work through the temperature and humidity controller, reducing the gas temperature in the space close to one side of the detection box in the temperature control box by a refrigerating end of the semiconductor refrigerating sheet, and introducing low-temperature gas into the detection box, b, reducing the temperature in the detection box, and controlling the temperature balance in the detection box by a temperature and humidity sensor and a temperature and humidity controller according to the principle of the step b;
s3, humidity adjustment, namely, the semiconductor refrigerating sheet, the electric heating sheet and the auxiliary electric heating pipe are controlled by a temperature and humidity controller to realize humidification and dehumidification, wherein the humidity adjustment comprises the following steps;
c. humidifying, controlling the steam inlet valve to be opened through a temperature and humidity controller, controlling the refrigeration valve, the heating valve, the refrigeration circulating valve and the heating circulating valve to be closed through the temperature and humidity controller, opening the water injection valve, water is injected into the water tank through the water injection port, the water level in the water tank is observed through the liquid level device, the electric heating sheet is started to work through the temperature and humidity controller, the water is heated to a boiling state by the electric heating sheet, the air pressure is increased after steam is generated in the water tank, the water vapor enters the detection box through the steam inlet pipe, the humidity signal is converted into an electric signal after the temperature and humidity sensor detects the humidity change in the temperature and humidity sensor, and the electric signal is transmitted to the temperature and humidity controller, when the humidity in the detection box reaches a set value, the temperature and humidity controller controls the electric heating sheet to stop working, meanwhile, the steam inlet valve is closed, otherwise, the electric heating sheet continues to work, and the steam inlet valve is kept in an open state;
further, when the air pressure in the water tank is too high, the redundant air is discharged through the pressure relief pipe.
d. Dehumidifying, opening a sealing cover, starting an auxiliary electric heating pipe to work through a temperature and humidity controller, starting the auxiliary electric heating pipe to heat the space in the detection box, heating the air in the detection box, then rising, discharging the vapor along with the airflow, detecting the temperature and the humidity in the detection box by a temperature and humidity sensor, controlling the auxiliary electric heating pipe to stop working by the temperature and humidity controller when the humidity reaches a set value, and cooling the space in the detection box by the temperature and humidity sensor when the temperature in the detection box is detected to be overhigh until the set temperature is reached;
and S4, testing, namely after the temperature in the detection box is adjusted to be the test temperature and the test humidity in the steps S and S, connecting two wiring terminals for detecting the insulation resistance by using the detection end of the ohmmeter, and detecting the resistance value of the insulation resistance at a specific temperature and humidity so as to judge whether the detected insulation resistance meets the use condition.
Compared with the prior art, the invention has the beneficial effects that:
the invention can accurately detect the resistance value of the insulation resistor with special use when the insulation resistor is used in the environment with special temperature and special humidity by placing the insulation resistor in the environment with special humidity and special temperature for detection, and judges whether the detected insulation resistor works in the environment with special temperature and special humidity by simulating the temperature and the humidity in the environment where the insulation resistor is used, so that the detection result is more fit for the actual use condition.
The gas testing device is small in size, and high-temperature or low-temperature gas can be counteracted by the self circulation function of the device in the using process, so that the influence on the testing environment is minimized, and the influence of other tests on the exhausted high-temperature or low-temperature gas is prevented.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the internal structure of the water tank, temperature controller and detection box of the present invention;
FIG. 3 is a schematic view of the sealing cap of the present invention;
FIG. 4 is an enlarged view of a portion of the structure shown in FIG. 2.
In the figure: 1. a base; 2. a detection box; 201. a first engaging portion; 3. a temperature and humidity sensor; 4. an auxiliary electric heating tube; 5. a bayonet; 6. a sealing cover; 601. a second card and section; 602. a limiting part; 7. a temperature and humidity controller; 8. a temperature control box; 9. a partition plate; 10. a semiconductor refrigerating sheet; 11. a refrigeration pipe; 12. a refrigeration valve; 13. heating a pipe; 14. a heating valve; 15. a pipeline fan; 16. a frame; 17. a refrigeration circulating pipe; 18. a refrigeration circulation valve; 19. a heating circulation pipe; 20. a heating circulating valve; 21. a water tank; 22. an electrical heating sheet; 23. a water injection port; 24. a water injection valve; 25. a pressure relief pipe; 26. a pressure relief valve; 27. a steam inlet pipe; 28. a steam inlet valve; 29. a liquid level gauge; 30. and (4) insulation resistance.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Referring to fig. 1 to 4, the present invention provides a technical solution: the utility model provides an insulation resistance testing arrangement, includes detection mechanism, temperature control mechanism and humidity control mechanism, its characterized in that: the detection mechanism, the temperature control mechanism and the humidity control mechanism are all fixedly arranged at the top of the base 1, and the temperature control mechanism and the humidity control mechanism are all communicated with the detection mechanism;
the detection mechanism comprises a detection box 2, two identical bayonets 5 are symmetrically formed in the center positions of two sides of the detection box 2, and a sealing cover 6 is clamped and mounted at the top of the detection box 2;
the temperature detection mechanism comprises a temperature control box 8, a partition plate 9 is fixedly installed on the inner wall of the temperature control box 8, the partition plate 9 divides the interior of a semiconductor refrigerating sheet 10 into two mutually closed spaces, a plurality of semiconductor refrigerating sheets 10 are embedded and installed on the partition plate 9, the partition plate 9 penetrates through the semiconductor refrigerating sheet 10, the refrigerating end of the partition plate 9 is located in the space, close to the detection box 2, in the temperature control box 8, and the heating end of the partition plate 9 is located in the space, far away from the detection box 2, in the temperature control box 8;
the humidity control mechanism comprises a water tank 21, an electric heating sheet 22 is fixedly mounted at the lower end of the inner wall of the water tank 21, a water filling port 23 is mounted at the top end of the water tank 21 in a communicated mode, a water filling valve 24 is mounted on the water filling port 23 in a communicated mode, a pressure relief pipe 25 is mounted at the top of the water tank 21 in a communicated mode, and a pressure relief valve 26 is mounted on the pressure relief pipe 25 in a communicated mode.
In this embodiment, the inner wall of detection case 2 is provided with temperature and humidity sensor 3, and temperature and humidity sensor 3 electric connection temperature and humidity controller 7, and temperature and humidity controller 7 fixed mounting is at the outer wall of detection case 2, and the inside of detection case 2 is provided with supplementary electric heating pipe 4.
In this embodiment, the top ends of the two sides of the detection box 2 are provided with first engaging portions 201, the two sides of the lower end of the sealing cover 6 are provided with second engaging portions 601 matched with the first engaging portions 201, and the other side of the sealing cover 6 is provided with a limiting portion 602.
In this embodiment, temperature control box 8 is through the cooling pipe 11 with heat the setting of pipe 13 and 2 intercommunications of detection box, cooling pipe 11 sets up the lateral wall that is close to detection box 2 at temperature control box 8, heat pipe 13 and set up the lateral wall of keeping away from detection box 2 at temperature control box 8, be provided with refrigerating valve 12 on the cooling pipe 11, it heats valve 14 to heat to be provided with on the pipe 13, the inside of cooling pipe 11 with heating pipe 13 arranging temperature control box 8 in all communicates installs pipeline fan 15, pipeline fan 15 passes through frame 16 fixed mounting at temperature control box 8's inner wall.
In this embodiment, a refrigeration circulating pipe 17 is installed in the temperature control box 8 in a communicating manner at the top of the space close to the detection box 2, a refrigeration circulating valve 18 is arranged on the refrigeration circulating pipe 17, a heating circulating pipe 19 is installed in the temperature control box 8 in a communicating manner at the top of the space far from the detection box 2, and a heating circulating valve 20 is arranged on the heating circulating pipe 19.
In this embodiment, the water tank 21 is provided in communication with the detection tank 2 through a steam inlet pipe 27, the steam inlet pipe 27 is provided at the top of the water tank 21, and the steam inlet pipe 27 is provided with a steam inlet valve 28.
In this embodiment, a liquid level gauge 29 is installed on the sidewall of the water tank 21.
In this embodiment, the temperature and humidity controller 7 is electrically connected to the semiconductor cooling plate 10, the cooling valve 12, the heating valve 14, the pipeline fan 15, the cooling circulation valve 18, the heating circulation valve 20, the electric heating plate 22, and the steam inlet valve 28.
The present embodiment further provides an insulation resistance testing method to detect an actual resistance value of an insulation resistance at a specific temperature and humidity, the insulation resistance testing method includes the following steps:
s1, placing a resistor to be tested, firstly, sliding to open the sealing cover 6 to display two bayonets 5, then, respectively placing two wiring terminals of the insulation resistor 30 in the two bayonets 5, and then, pushing the sealing cover 6 to close the detection box 2;
s2, temperature regulation, namely controlling the semiconductor refrigerating sheet 10 through the temperature and humidity controller 7 to realize temperature rise and temperature drop, wherein the temperature regulation step is as follows;
a. heating, controlling a pipeline fan 15 on a refrigerating pipe 11 to work through a temperature and humidity controller 7, sucking air in a detection box 2 into a temperature control box 8 through the pipeline fan 15 on the refrigerating pipe 11, controlling a refrigerating valve 12 and a refrigerating circulating valve 18 to open air in a space close to one side of the detection box 2 in the temperature control box 8 through the temperature and humidity controller 7 at the moment, discharging the air in the space close to one side of the detection box 2 in the temperature control box 8 through a refrigerating circulating pipe 17, controlling a heating valve 14 and a heating circulating valve 20 to open through the temperature and humidity controller 7, and opening a heating pipe 13, blowing gas in the space far away from the detection box 2 in the temperature control box 8 into the detection box 2 through the pipeline fan 15 on the heating pipe 13, controlling a semiconductor refrigerating sheet 10 to work through the temperature and humidity controller 7 at the moment, enabling a refrigerating end of the semiconductor refrigerating sheet 10 to be close to the detection box 2, enabling a heating end of the semiconductor refrigerating sheet 10 to be far away from the detection box 2, and causing the temperature of the space close to be reduced at one side of the detection box 2 in the semiconductor refrigerating sheet 10, the temperature of the space far away from one side of the detection box 2 rises, the pipeline fan 15 on the heating pipe 13 blows hot air into the detection box 2 to realize temperature rise, gas with overhigh temperature in the detection box 2 enters the space close to the detection box 2 in the semiconductor refrigeration sheet 10 and is discharged through the refrigeration circulating pipe 17, the temperature and humidity sensor 3 senses the temperature in the detection box 2, when the temperature in the detection box 2 reaches the set value of the temperature and humidity controller 7, the temperature and humidity sensor 3 converts the temperature signal into an electric signal to be transmitted to the temperature and humidity controller 7, the temperature and humidity controller 7 controls all the participating temperature rise electronic components to stop working after receiving the electric signal of the temperature and humidity sensor 3, when the temperature in the detection box 2 is smaller than the set value of the temperature and humidity controller 7, the temperature and humidity sensor 3 converts the temperature signal into an electric signal to be transmitted to the temperature and humidity controller 7, and the temperature and humidity controller 7 controls all the participating temperature rise electronic components to start working after receiving the electric signal of the temperature and humidity sensor 3 (ii) a
b. Cooling, controlling a refrigeration valve 12, a heating valve 14, a refrigeration circulating valve 18 and a heating circulating valve 20 to be opened through a temperature and humidity controller 7, controlling a pipeline fan 15 on a heating pipe 13 to suck air in the detection box 2 into a space on one side, far away from the detection box 2, of the temperature control box 8 through the temperature and humidity controller 7, increasing the air pressure of the space at the moment, discharging redundant air through a heating circulating pipe 19, controlling the pipeline fan 15 on the refrigeration pipe 11 to work through the temperature and humidity controller 7, guiding the air in the space on one side, close to the detection box 2, of the temperature control box 8 into the detection box 2, reducing the air pressure of the space on one side, close to the detection box 2, of the temperature control box 8 at the moment, allowing external air to enter through a refrigeration circulating pipe 17 to realize air pressure balance, starting the semiconductor refrigeration sheet 10 to work through the temperature and humidity controller 7, and reducing the air temperature of the space on one side, close to the detection box 2, of the semiconductor refrigeration end of the semiconductor refrigeration sheet 10, b, after the low-temperature gas enters the detection box 2, reducing the temperature in the detection box 2, and controlling the temperature balance in the detection box 2 by the temperature and humidity sensor 3 and the temperature and humidity controller 7 according to the principle of the step b;
s3, humidity regulation, wherein the semiconductor refrigeration piece 10, the electric heating piece 22 and the auxiliary electric heating tube 4 are controlled by the temperature and humidity controller 7 to realize humidification and dehumidification, and the humidity regulation steps are as follows;
c. humidifying, controlling the steam inlet valve 28 to be opened through the temperature and humidity controller 7, controlling the refrigeration valve 12, the heating valve 14, the refrigeration circulating valve 18 and the heating circulating valve 20 to be closed through the temperature and humidity controller 7, opening the water injection valve 24, injecting water into the water tank 21 through the water injection port 23, observing the water level in the water tank 21 through the liquid level device 29, starting the electric heating sheet 22 to work through the temperature and humidity controller 7, heating the water to a boiling state through the electric heating sheet 22, generating steam in the water tank 21, increasing the air pressure, introducing the steam into the detection box 2 through the steam inlet pipe 27, converting a humidity signal into an electric signal after the temperature and humidity sensor 3 detects the humidity change in the temperature and humidity sensor 3, transmitting the electric signal to the temperature and humidity controller 7, when the humidity in the detection box 2 reaches a set value, controlling the electric heating sheet 22 to stop working through the temperature and humidity controller 7, and closing the steam inlet valve 28 at the same time, on the contrary, the electric heating plate 22 continues to work, and the steam inlet valve 28 keeps an open state;
further, when the air pressure in the water tank 21 is excessively high, the surplus air is discharged through the pressure relief pipe 25.
d. Dehumidifying, opening a sealing cover 6, starting an auxiliary electric heating pipe 4 to work through a temperature and humidity controller 7, starting the auxiliary electric heating pipe 4 to heat the space in a detection box 2, heating the air in the detection box 2, then rising, discharging the water vapor along with the air flow, detecting the temperature and the humidity in the detection box 2 by a temperature and humidity sensor 3, when the humidity reaches a set value, controlling the auxiliary electric heating pipe 4 to stop working by the temperature and humidity controller 7, and when the temperature and humidity sensor 3 detects that the temperature in the detection box 2 is overhigh, cooling the space in the detection box 2 in the same step b until the set temperature is reached;
and S4, testing, namely, after the temperature in the detection box 2 is adjusted to be the test temperature and the test humidity by the steps S2 and S3, connecting two wiring terminals of the insulation resistor 30 by using a detection end of an ohmmeter, and detecting the resistance value of the insulation resistor 30 under the specific temperature and humidity, thereby judging whether the detected insulation resistor 30 meets the use condition.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. The utility model provides an insulation resistance testing arrangement, includes detection mechanism, temperature control mechanism and humidity control mechanism, its characterized in that: the detection mechanism, the temperature control mechanism and the humidity control mechanism are all fixedly arranged at the top of the base (1), and the temperature control mechanism and the humidity control mechanism are all communicated with the detection mechanism;
the detection mechanism comprises a detection box (2), two identical bayonets (5) are symmetrically formed in the centers of two sides of the detection box (2), and a sealing cover (6) is clamped and mounted at the top of the detection box (2);
the temperature detection mechanism comprises a temperature control box (8), a partition plate (9) is fixedly mounted on the inner wall of the temperature control box (8), the partition plate (9) divides the interior of a semiconductor refrigerating sheet (10) into two mutually closed spaces, a plurality of semiconductor refrigerating sheets (10) are embedded in the partition plate (9), the partition plate (9) penetrates through the semiconductor refrigerating sheets (10), the refrigerating end of the partition plate (9) is located in the space, close to the detection box (2), in the temperature control box (8), and the heating end of the partition plate (9) is located in the space, far away from the detection box (2), in the temperature control box (8);
humidity control mechanism includes water tank (21), the inner wall low side fixed mounting of water tank (21) has electric heating plate (22), water filling port (23) are installed in the top intercommunication of water tank (21), water injection valve (24) are installed in the intercommunication on water filling port (23), pressure release pipe (25) are installed in the top intercommunication of water tank (21), pressure release valve (26) are installed in the intercommunication on pressure release pipe (25).
2. The insulation resistance testing apparatus according to claim 1, characterized in that: the temperature and humidity sensor (3) is arranged on the inner wall of the detection box (2), the temperature and humidity sensor (3) is electrically connected with a temperature and humidity controller (7), the temperature and humidity controller (7) is fixedly installed on the outer wall of the detection box (2), and an auxiliary electric heating pipe (4) is arranged inside the detection box (2).
3. The insulation resistance testing apparatus according to claim 1, characterized in that: the top ends of two sides of the detection box (2) are provided with first clamping parts (201), two sides of the lower end of the sealing cover (6) are provided with second clamping parts (601) matched with the first clamping parts (201), and the other side of the sealing cover (6) is provided with a limiting part (602).
4. The insulation resistance testing apparatus according to claim 1, characterized in that: temperature control box (8) set up through refrigeration pipe (11) and heating pipe (13) and detection case (2) intercommunication, refrigeration pipe (11) set up the lateral wall that is close to detection case (2) in temperature control box (8), heating pipe (13) set up the lateral wall of keeping away from detection case (2) in temperature control box (8), be provided with refrigeration valve (12) on refrigeration pipe (11), be provided with heating valve (14) on heating pipe (13), refrigeration pipe (11) with pipeline fan (15) are all installed in the inside of arranging temperature control box (8) in to heating pipe (13) intercommunication, pipeline fan (15) are through the inner wall of frame (16) fixed mounting in temperature control box (8).
5. The insulation resistance testing device according to claim 1, characterized in that: the utility model discloses a temperature control box, including temperature control box (8), space top intercommunication near detection case (2) is installed refrigeration circulating pipe (17), be provided with refrigeration circulating valve (18) on refrigeration circulating pipe (17), keep away from the space top intercommunication of detection case (2) in temperature control box (8) and install heating circulating pipe (19), be provided with heating circulating valve (20) on heating circulating pipe (19).
6. The insulation resistance testing device according to claim 1, characterized in that: the water tank (21) is communicated with the detection box (2) through a steam inlet pipe (27), the steam inlet pipe (27) is arranged at the top of the water tank (21), and a steam inlet valve (28) is arranged on the steam inlet pipe (27).
7. The insulation resistance testing apparatus according to claim 1, characterized in that: the side wall of the water tank (21) is communicated with a liquid level device (29).
8. The insulation resistance testing apparatus according to claim 2, characterized in that: the temperature and humidity controller (7) is electrically connected with the semiconductor refrigeration piece (10), the refrigeration valve (12), the heating valve (14), the pipeline fan (15), the refrigeration circulating valve (18), the heating circulating valve (20), the electric heating piece (22) and the steam inlet valve (28).
9. An insulation resistance test method for the insulation resistance test apparatus according to any one of claims 1 to 8, characterized in that: the insulation resistance testing method comprises the following steps:
s1, placing a resistor to be tested, firstly, sliding and opening a sealing cover (6) to display two bayonets (5), then, respectively placing two wiring terminals of an insulation resistor (30) in the two bayonets (5), and then, pushing the sealing cover (6) to close a detection box (2);
s2, temperature regulation, namely controlling the semiconductor refrigeration piece (10) through a temperature and humidity controller (7) to realize temperature rise and temperature reduction, wherein the temperature regulation step is as follows;
a. heating, controlling a pipeline fan (15) on a refrigerating pipe (11) to work through a temperature and humidity controller (7), pumping air in a detection box (2) into a temperature control box (8) through the pipeline fan (15) on the refrigerating pipe (11), controlling a refrigerating valve (12) and a refrigerating circulating valve (18) to open a space, close to one side of the detection box (2), in the temperature control box (8) to discharge the air through a refrigerating circulating pipe (17) through the temperature and humidity controller (7), controlling a heating valve (14) and a heating circulating valve (20) to open through the temperature and humidity controller (7), opening a heating pipe (13), blowing gas in a space, far away from the detection box (2), in the temperature control box (8) into the detection box (2) through the pipeline fan (15) on the heating pipe (13), and controlling a semiconductor refrigerating sheet (10) to work through the temperature and humidity controller (7), the refrigerating end of the semiconductor refrigerating piece (10) is close to the detection box (2), the heating end of the semiconductor refrigerating piece (10) is far away from the detection box (2), so that the temperature of a space, close to one side of the detection box (2), in the semiconductor refrigerating piece (10) is reduced, the temperature of the space, far away from one side of the detection box (2), is increased, a pipeline fan (15) on a heating pipe (13) blows hot air into the detection box (2) to be heated, gas with overhigh temperature in the detection box (2) enters the space, close to the detection box (2), in the semiconductor refrigerating piece (10) and is discharged through a refrigerating circulating pipe (17), a temperature and humidity sensor (3) senses the temperature in the detection box (2), when the temperature in the detection box (2) reaches a set value of a temperature and humidity controller (7), the temperature and humidity sensor (3) converts a temperature signal into an electric signal and transmits the electric signal to the temperature and humidity controller (7), the temperature and humidity controller (7) receives electric signals of the temperature and humidity sensor (3) and then controls all the electronic components involved in temperature rise to stop working, when the temperature in the detection box (2) is smaller than a set value of the temperature and humidity controller (7), the temperature and humidity sensor (3) converts temperature signals into electric signals and transmits the electric signals to the temperature and humidity controller (7), and the temperature and humidity controller (7) receives the electric signals of the temperature and humidity sensor (3) and then controls all the electronic components involved in temperature rise to start working;
b. cooling, wherein a temperature and humidity controller (7) is used for controlling a refrigerating valve (12), a heating valve (14), a refrigerating circulating valve (18) and a heating circulating valve (20) to be opened, a pipeline fan (15) on a heating pipe (13) is controlled by the temperature and humidity controller (7) to suck air in a detection box (2) into a space, far away from one side of the detection box (2), in the temperature and humidity controller (8), the air pressure of the space is increased, redundant air is discharged through a heating circulating pipe (19), the pipeline fan (15) on a refrigerating pipe (11) is controlled by the temperature and humidity controller (7) to work, air in the space, close to one side of the detection box (2), in the temperature and temperature control box (8) is guided into the detection box (2), the air pressure of the space, close to one side of the detection box (2), in the temperature and temperature control box (8) is reduced, external air enters through a refrigerating circulating pipe (17), and air pressure balance is realized, b, starting a semiconductor refrigerating sheet (10) to work through a temperature and humidity controller (7), reducing the temperature of gas in a space, close to one side of the detection box (2), in the temperature control box (8) by a refrigerating end of the semiconductor refrigerating sheet (10), reducing the temperature in the detection box (2) after low-temperature gas enters the detection box (2), and controlling the temperature balance in the detection box (2) by the temperature and humidity sensor (3) and the temperature and humidity controller (7) according to the principle of the step b;
s3, humidity adjustment, wherein the semiconductor refrigeration sheet (10), the electric heating sheet (22) and the auxiliary electric heating pipe (4) are controlled by a temperature and humidity controller (7) to realize humidification and dehumidification, and the humidity adjustment comprises the following steps;
c. humidifying, wherein a steam inlet valve (28) is controlled to be opened through a temperature and humidity controller (7), a refrigeration valve (12), a heating valve (14), a refrigeration circulating valve (18) and a heating circulating valve (20) are controlled to be closed through the temperature and humidity controller (7), a water injection valve (24) is opened, water is injected into a water tank (21) through a water injection port (23), the water level in the water tank (21) is observed through a liquid level device (29), an electric heating sheet (22) is opened to work through the temperature and humidity controller (7), the water is heated to a boiling state through the electric heating sheet (22), after steam is generated in the water tank (21), air pressure is increased, the water vapor enters a detection box (2) through a steam inlet pipe (27), after the temperature and humidity sensor (3) detects the humidity change in the temperature and humidity sensor (3), a humidity signal is converted into an electric signal and is transmitted to the temperature and humidity controller (7), when the humidity in the detection box (2) reaches a set value, the temperature and humidity controller (7) controls the electric heating piece (22) to stop working and simultaneously closes the steam inlet valve (28), otherwise, the electric heating piece (22) continues to work, and the steam inlet valve (28) keeps an open state;
d. dehumidifying, opening a sealing cover (6), starting an auxiliary electric heating pipe (4) to work through a temperature and humidity controller (7), starting the auxiliary electric heating pipe (4) to heat the space in a detection box (2), heating the air in the detection box (2) and then rising, discharging water vapor along with air flow, detecting the temperature and the humidity in the detection box (2) by a temperature and humidity sensor (3), controlling the auxiliary electric heating pipe (4) to stop working when the humidity reaches a set value, and cooling the space in the detection box (2) in the same step b when the temperature and humidity sensor (3) detects that the temperature in the detection box (2) is overhigh until the set temperature is reached;
and S4, testing, namely after the temperature in the detection box (2) is adjusted to the test temperature and the test humidity in the steps S2 and S3, connecting two connecting terminals for detecting the insulation resistor (30) by using the detection end of an ohmmeter, and detecting the resistance value of the insulation resistor (30) at a specific temperature and humidity so as to judge whether the detected insulation resistor (30) meets the use condition.
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| CN202210546221.3A CN114924125A (en) | 2022-05-20 | 2022-05-20 | Insulation resistance testing device and insulation resistance testing method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115791442A (en) * | 2023-02-09 | 2023-03-14 | 北京神导科技股份有限公司 | Component detection device for navigation product |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115791442A (en) * | 2023-02-09 | 2023-03-14 | 北京神导科技股份有限公司 | Component detection device for navigation product |
| CN115791442B (en) * | 2023-02-09 | 2023-04-14 | 北京神导科技股份有限公司 | Component detection device for navigation product |
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