Test device and test system

Abstract

The utility model discloses a test device and a test system, and relates to the technical field of simulation test, the test device is used for an oil pressure sealing test of a fuse, the test device comprises an oil tank, a pressure control module, a temperature control module and a current control module, the oil tank is configured to be communicated with a gas source, and the oil tank is used for accommodating at least part of the fuse; the pressure control module is arranged between the air source and the oil tank and used for controlling the pressure in the oil tank. The temperature control module is arranged in the oil tank and used for controlling the temperature of insulating oil in the oil tank; the current control module is configured to be electrically connected with the power supply and form a current loop with the fuse to control the current passing through the fuse. According to the technical scheme, the pressure control module, the temperature control module and the current control module are arranged to correspondingly control the pressure, temperature and current conditions required in the oil pressure sealing test so as to meet the environment requirements of the oil pressure sealing test of the fuse, and therefore the use working conditions of the fuse under the national standard requirements are simulated.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of simulation test, in particular to a test device and a test system. BACKGROUND

[0002] Fuse is a main circuit protection element, which is usually arranged in the oil tank of a transformer to protect the transformer and low-voltage power distribution equipment. The fuse needs to be subjected to oil pressure sealing test under the working condition required by the national standard. CONTENT OF THE INVENTION

[0003] The main purpose of the present application is to provide a test device and a test system, which are used for oil pressure sealing test of a fuse.

[0004] To achieve the above purpose, the test device provided by the present application is used for oil pressure sealing test of a fuse, and comprises:

[0005] An oil tank configured to communicate with a gas source, the oil tank being used for accommodating at least part of the fuse;

[0006] A pressure control module arranged between the gas source and the oil tank and used for controlling the pressure inside the oil tank;

[0007] A temperature control module arranged in the oil tank and used for controlling the temperature of insulating oil inside the oil tank;

[0008] A current control module configured to be electrically connected with a power source and form a current loop with the fuse to control the current passing through the fuse.

[0009] In an embodiment, the pressure control module comprises a pressure regulating valve arranged on a gas path between the gas source and the oil tank, and a pressure sensor arranged in the oil tank and electrically connected with the pressure regulating valve.

[0010] In an embodiment, the pressure control module further comprises a one-way valve arranged on a gas path between the pressure regulating valve and the gas source, the one-way valve allowing the gas source to be unidirectionally conducted to the pressure regulating valve.

[0011] In an embodiment, the current control module comprises a variable resistor and an ammeter, the variable resistor and the ammeter being arranged outside the oil tank and used for being connected in series with the fuse.

[0012] In an embodiment, the temperature control module comprises a heater used for heating the insulating oil inside the oil tank, and a temperature sensor electrically connected with the heater and used for detecting the temperature of the insulating oil.

[0013] In an embodiment, the oil tank has a first side surface, the first side surface is provided with a first mounting seat and an oil receiving tray, the oil receiving tray is arranged below the first mounting seat, and the first mounting seat is used for mounting the fuse.

[0014] In an embodiment, the first side surface is further provided with an oil injection valve and an oil discharge valve, the oil injection valve is arranged above the first mounting seat, and the oil discharge valve is arranged below the first mounting seat.

[0015] In an embodiment, the first side surface is further provided with a liquid level meter, and the liquid level meter is arranged between the oil injection valve and the first mounting seat.

[0016] In an embodiment, the test device further comprises a circulating pump, and an inlet and an outlet of the circulating pump are in communication with the inside of the oil tank.

[0017] In an embodiment, the top of the oil tank is provided with a plurality of wire passing holes.

[0018] In an embodiment, the bottom of the oil tank is provided with a plurality of rolling wheels.

[0019] The application also provides a test system, comprising a gas source, a power source and the test device.

[0020] In an embodiment, the gas source is configured as an air compressor.

[0021] In an embodiment, the power source is configured as a stabilized AC power source.

[0022] The technical scheme of the application meets the requirements of the environment for the oil pressure sealing test of the fuse by setting the pressure control module, the temperature control module and the current control module to correspondingly control the pressure, the temperature and the current conditions required in the oil pressure sealing test, so as to simulate the use conditions of the fuse under the requirements of the national standard. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical scheme in the embodiments of the application or the prior art, the drawings needed in the embodiment or prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the drawings shown.

[0024] Figure 1 The principle diagram of an embodiment of the test system provided by the application is shown in the figure;

[0025] Figure 2 The structural schematic diagram of an embodiment of the test system provided by the application is shown in the figure;

[0026] Figure 3 As Figure 2 Structure diagram of the pilot test system from another perspective;

[0027] Figure 4 As Figure 2 Structure diagram of an embodiment of the oil tank;

[0028] Figure 5 As Figure 2 Structure diagram of the oil tank from another perspective.

[0029] Brief Description of the Drawings:

[0030] 10, test device; 20, gas source; 30, power supply; 40, fuse; 100, oil tank; 200, pressure control module; 300, temperature control module; 400, current control module; 500, circulating pump; 101, first side; 102, second side; 103, third side; 104, fourth side; 111, first mounting seat; 112, second mounting seat; 113, third mounting seat; 114, fourth mounting seat; 115, fifth mounting seat; 116, sixth mounting seat; 117, seventh mounting seat; 120, oil receiving tray; 130, oil filling valve; 140, oil drain valve; 150, liquid level meter; 160, wire hole; 170, rolling wheel; 210, pressure regulating valve; 220, pressure sensor; 230, check valve; 310, heater; 320, temperature sensor; 410, variable resistor; 420, ammeter.

[0031] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0032] 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. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0033] It should be noted that if the present application involves directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between the components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0034] In addition, if the description of "first", "second" and the like is involved in the embodiments of the present application, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one of the features. In addition, if "and / or" or "and / or" appears throughout the text, it means that the three parallel schemes are included, for example, "A and / or B" includes A scheme, or B scheme, or A and B scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of the ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor in the protection scope required by the present application.

[0035] The present application provides a test device 10.

[0036] Please refer to Figures 1 to 3 In an embodiment of the present application, the test device 10 is used for oil pressure sealing test of the fuse 40, and the test device 10 comprises an oil tank 100, a pressure control module 200, a temperature control module 300 and a current control module 400. The oil tank 100 is configured to communicate with the gas source 20, and the oil tank 100 is used to accommodate at least part of the fuse 40. The pressure control module 200 is arranged between the gas source 20 and the oil tank 100, and is used to control the pressure inside the oil tank 100. The temperature control module 300 is arranged in the oil tank 100, and is used to control the temperature of the insulating oil inside the oil tank 100. The current control module 400 is configured to be electrically connected with the power supply 30, and forms a current loop with the fuse 40, so as to control the current passing through the fuse 40.

[0037] When the fuse 40 is subjected to the oil pressure sealing test, according to the national standard GB / T15166.2, the fuse 40 needs to be immersed in the insulating oil with a pressure of 7x10 4 N / m 2 The temperature of the insulating oil should be raised to between 75℃ and 85℃ and maintained for 2h, and the fuse 40 should pass through the maximum allowed continuous current at 80℃ for 2h. After the end of the multiple cycle test, the fuse 40 is taken out of the insulating oil, the outside of the fuse 40 is wiped clean and opened to observe the arc extinguishing medium, and it is judged whether the insulating oil enters.

[0038] Specifically, the oil tank 100 is a tank body simulating the working condition of the fuse 40 under the requirement of the national standard, and when the test device 10 is subjected to the oil pressure sealing test of the fuse 40, the oil tank 100 is filled with insulating oil.

[0039] The pressure control module 200 is arranged between the gas source 20 and the oil tank 100, and the amount of gas entering the inside of the oil tank 100 is adjusted through the pressure control module 200, so as to control the pressure level inside the oil tank 100, so that the pressure inside the oil tank 100 meets the requirements of the test, so as to ensure that the pressure condition during the test is as close as possible to the working condition of the fuse 40 under the national standard requirement. The temperature control module 300 is arranged on the oil tank 100, and the temperature of the insulating oil in the oil tank 100 is controlled through the temperature control module 300, so that the temperature of the insulating oil inside the oil tank 100 meets the requirements of the test, so as to ensure that the temperature of the insulating oil during the test is as close as possible to the working condition of the fuse 40 under the national standard requirement. The current control module 400 is electrically connected with the power supply 30, and the current control module 400, the power supply 30 and the fuse 40 form a current loop. The current control module 400 can accurately control the current flowing through the fuse 40, so that the fuse 40 meets the condition of passing through the maximum allowed continuous current during the test process. By setting the pressure control module 200, the temperature control module 300 and the current control module 400 to correspond to the pressure, temperature and current conditions in the working condition under the national standard requirement, the sealing performance of the fuse 40 can be more accurately detected and the performance of the fuse 40 in actual operation can be predicted, so as to improve the reliability and safety of the product.

[0040] The technical scheme of the present application sets the pressure control module 200, the temperature control module 300 and the current control module 400 to correspond to the pressure, temperature and current conditions required in the oil pressure sealing test, so as to meet the requirements of the environment of the fuse 40 oil pressure sealing test, thereby simulating the working condition of the fuse 40 under the national standard requirement.

[0041] In an embodiment, please refer to Figures 1 to 3 The pressure control module 200 includes a pressure regulating valve 210 and a pressure sensor 220, the pressure regulating valve 210 is arranged on the gas path between the gas source 20 and the oil tank 100, and the pressure sensor 220 is arranged in the oil tank 100 and electrically connected with the pressure regulating valve 210.

[0042] The pressure regulating valve 210 is installed on the gas path between the gas source 20 and the oil tank 100. The pressure regulating valve 210 can adjust the amount of gas entering the oil tank 100 as needed, thereby changing the pressure inside the oil tank 100. The pressure sensor 220 is directly installed on the oil tank 100. The pressure sensor 220 can accurately measure the pressure change in the oil tank 100, and is used to monitor the pressure level in the oil tank 100 in real time, and feed back the data to the pressure regulating valve 210 or the control system. Based on the real-time feedback of the pressure data in the oil tank 100, the control system can make corresponding adjustments to maintain or change the pressure state in the oil tank 100. When the pressure sensor 220 detects that the pressure in the oil tank 100 is lower than the set value, the pressure regulating valve 210 will open to allow more gas to enter the oil tank 100 until the pressure reaches the predetermined standard; on the contrary, if the pressure in the oil tank 100 is too high, it will reduce or stop the gas flow, and sometimes even release part of the gas to reduce the pressure. The pressure regulating valve 210 can be manual or automatic. The pressure regulating valve 210 can be installed on the oil tank 100 or on the pipeline between the gas source 20 and the oil tank 100.

[0043] In other embodiments, the pressure control module 200 includes a pressure switch, a pressure relief valve, and a flow meter for monitoring the flow rate of gas entering or leaving the oil tank 100 to calculate the pressure inside the oil tank 100; the pressure switch is used to automatically open or close the gas path when a certain pressure value is reached. For example, according to the feedback of the flow meter, when the pressure in the oil tank 100 exceeds the set safety upper limit, the pressure switch can trigger an alarm or directly cut off the supply of the gas source 20 to ensure system safety. When the pressure inside the oil tank 100 abnormally rises, the pressure relief valve will automatically open to release excess pressure, preventing equipment damage or dangerous situations.

[0044] In an embodiment, please refer to Figures 1 to 3 The pressure control module 200 further includes a one-way valve 230 installed on the gas path between the pressure regulating valve 210 and the gas source 20. The one-way valve 230 allows the gas source 20 to be one-way conducted to the pressure regulating valve 210.

[0045] The main function of the one-way valve 230 is to prevent gas backflow, i.e. to prevent the gas or insulating oil in the oil tank 100 from flowing back to the gas source 20 side. By preventing gas backflow, the one-way valve 230 can help maintain the stability of the gas path between the gas source 20 and the pressure regulating valve 210, avoiding pressure fluctuations caused by gas backflow, thereby ensuring the stability of the pressure inside the oil tank 100. At the same time, the one-way valve 230 can effectively prevent high-pressure gas from returning to the gas source 20, reducing potential safety risks such as equipment damage or personal injury of the gas source 20.

[0046] In an embodiment, please refer to Figures 1 to 3The current control module 400 includes a rheostat 410 and an ammeter 420, which are located outside the tank 100 and are connected in series with the fuse 40.

[0047] The rheostat 410 can change the current intensity in the circuit by adjusting its resistance value. By adjusting the resistance value of the rheostat 410, the current flowing through the fuse 40 can be controlled to simulate different working conditions or test the performance of the fuse 40 under different current loads. The resistance value of the rheostat 410 can be set to a certain value so that the current flowing through the fuse 40 is the rated value, thereby meeting the requirement that the fuse 40 needs to pass current when performing the oil pressure sealing test. The resistance value of the rheostat 410 can also be changed to gradually increase the current until a predetermined test standard is reached or the fuse 40 is observed to act, thereby being used to determine the fusing characteristics, response time, and reliability of the fuse 40. The ammeter 420 is an instrument used to measure the actual current flowing in the circuit. The rheostat 410 and the ammeter 420 are directly connected in series with the fuse 40 in the circuit, and the ammeter 420 can display the current value flowing through the fuse 40 in real time. The combination of the rheostat 410 and the ammeter 420 allows researchers to finely adjust and monitor the current flowing through the fuse 40 in real time, so as to accurately evaluate the performance of the fuse 40 under the rated current or different current conditions.

[0048] In other embodiments, the current control module 400 includes an electronic load, which is a device capable of simulating various load conditions, through which the current flowing through the circuit can be accurately adjusted within a wide range. This is very useful for testing the performance of the fuse 40 under different load conditions. Or the power supply 30 is configured as a programmable power supply 30, which can set the output voltage and current through a software interface, thereby very accurately controlling the current applied to the fuse 40.

[0049] In an embodiment, referring to Figures 1 to 3 The temperature control module 300 includes a heater 310 for heating the insulating oil inside the tank 100 and a temperature sensor 320 electrically connected to the heater 310, which is used to detect the temperature of the insulating oil.

[0050] The heater 310 directly acts on the insulating oil in the oil tank 100, and raises the temperature of the insulating oil through electric heating or other forms of heating, so that the oil temperature can reach or maintain at a specific test temperature point, to meet the requirements of the oil pressure seal test of the fuse 40 on the temperature of the insulating oil. The temperature sensor 320 is used to monitor the temperature change of the insulating oil in the oil tank 100 in real time, and convert these information into electrical signals to the control system. When the temperature sensor 320 detects that the oil temperature is lower than the set value, the control system will increase the power of the heater 310; on the contrary, if the oil temperature exceeds the set safety upper limit, the system will reduce or stop the work of the heater 310. By continuously monitoring the temperature of the insulating oil, it can be ensured that the oil temperature always remains within the predetermined range, avoiding the situation of overheating or insufficient heating. By precisely controlling the temperature of the insulating oil, the requirements of the oil pressure seal test on the temperature of the insulating oil are met.

[0051] In other embodiments, the temperature control module 300 includes a cooler, which can be used to lower the oil temperature when needed, such as by circulating cold water or other cooling medium to absorb heat from the insulating oil, thereby achieving cooling.

[0052] In an embodiment, please refer to Figures 2 to 4 , the oil tank 100 has a first side 101, which is provided with a first mounting seat 111 and an oil receiving disc 120, the oil receiving disc 120 is arranged below the first mounting seat 111, and the first mounting seat 111 is used to mount the fuse 40.

[0053] The main function of the first mounting seat 111 is to provide a fixed mounting position for the fuse 40, to ensure that part of the fuse 40 can be stably placed inside the oil tank 100, and at the same time to ensure that it forms a good electrical connection with the current control module 400. In order to facilitate the installation and removal of the fuse 40, when the fuse 40 is removed, part of the insulating oil may be attached to the surface of the fuse 40 and taken out of the oil tank 100. By arranging the oil receiving disc 120 below the first mounting seat 111, the oil receiving disc 120 can collect the insulating oil that may leak from the fuse 40 or around the mounting seat, thereby keeping the surface of the oil tank 100 and the ground clean, effectively reducing the risk of accidents such as fire, slipping, etc. caused by insulating oil leakage.

[0054] In an embodiment, please refer to Figures 2 to 4 , the first side 101 is also provided with an oil filling valve 130 and an oil discharge valve 140, the oil filling valve 130 is arranged above the first mounting seat 111, and the oil discharge valve 140 is arranged below the first mounting seat 111.

[0055] When the insulating oil in the oil tank 100 needs to be replenished due to evaporation, leakage or regular replacement, new insulating oil can be conveniently added into the oil tank 100 through the oil filling valve 130. When the insulating oil needs to be replaced or cleaned and maintained, the old oil in the oil tank 100 can be easily drained through the oil draining valve 140. The oil filling valve 130 is arranged above the first mounting seat 111 and close to the top of the oil tank 100. The oil filling valve 130 is arranged at a high position, which is not easy to overflow during oil filling, and ensures that the fuse 40 can be completely immersed in the insulating oil. At the same time, the insulating oil accidentally leaked during oil filling can also be collected into the oil pan 120. The oil draining valve 140 is arranged below the first mounting seat 111, so that the worker can complete the oil draining work without moving the fuse 40 or other components. In addition, due to the action of gravity, any impurities or moisture that may be deposited at the bottom of the oil tank 100 will be concentrated at the lowest point, and these deposits can be more effectively removed through the oil draining valve 140 arranged at a lower position, ensuring the cleanliness of the inside of the oil tank 100.

[0056] In an embodiment, referring to Figures 2 to 4 , the first side surface 101 is further provided with a liquid level meter 150, which is arranged between the oil filling valve 130 and the first mounting seat 111.

[0057] The main function of the liquid level meter 150 is to display the height or volume of the insulating oil inside the oil tank 100 in real time, so that the operator can know the current oil amount at any time. By clearly and intuitively displaying the liquid level, it can help to avoid the problem of overflow caused by excessive oil filling, and also prevent the situation that the test effect is affected due to insufficient oil. The liquid surface of the insulating oil is generally higher than the fuse 40 and lower than the oil filling valve 130. By arranging the liquid level meter 150 between the oil filling valve 130 and the first mounting seat 111, the arrangement of the liquid level meter 150 is more reasonable, and the detection result is more accurate. Moreover, the liquid level meter 150 is arranged at a position slightly above the middle of the oil tank 100, which is usually easy to see, so that the operator can directly check the change of the liquid level when filling the insulating oil, without the need to move the body or use tools.

[0058] In other embodiments, the liquid level meter 150 can also be arranged on other side surfaces of the oil tank 100.

[0059] In an embodiment, referring to Figures 1 to 3 , the test device 10 further comprises a circulating pump 500, the inlet and outlet of which are in communication with the inside of the oil tank 100.

[0060] The inlet and outlet of the circulating pump 500 are in communication with the inside of the oil tank 100. Generally, the inlet of the circulating pump 500 draws the relatively cold insulating oil, and the outlet of the circulating pump 500 re-injects the heated oil into the oil tank 100, promoting the mixing of the oil in the entire oil tank 100. By circulating the insulating oil in the oil tank 100 through the circulating pump 500, the heat generated by the heater 310 can be more evenly distributed in the insulating oil in the oil tank 100, avoiding the problems of local overheating or uneven cooling, thereby providing a more stable test environment.

[0061] In other embodiments, the circulating pump 500 can also be connected to a filter or other purification device to periodically filter and purify the insulating oil in the oil tank 100, remove impurities and water, extend the service life of the oil, and protect the tested device from contamination.

[0062] In an embodiment, referring to Figure 4 , the oil tank 100 also has a second side 102 adjacent to the first side 101, and the second side 102 is provided with a second mounting seat 112, a third mounting seat 113, a fourth mounting seat 114, and a fifth mounting seat 115. The second mounting seat 112 is arranged close to the bottom of the oil tank 100, and the heater 310 is mounted on the oil tank 100 through the second mounting seat 112. Multiple heaters 310 can be arranged to increase the rate of temperature rise of the insulating oil. The temperature sensor 320 is mounted on the oil tank 100 through the third mounting seat 113, and the third mounting seat 113 is arranged close to the first mounting seat 111 in the height direction, so that the temperature sensor 320 can accurately detect the oil temperature near the fuse 40. The pressure regulating valve 210 is mounted on the oil tank 100 through the fourth mounting seat 114, and the pressure sensor 220 is mounted on the oil tank 100 through the fifth mounting seat 115. The fourth mounting seat 114 and the fifth mounting seat 115 are arranged close to the top of the oil tank 100, so that the gas enters the oil tank 100 above the insulating oil surface, avoiding the influence of the rolling of the oil on the test results when the oil is filled with gas; at the same time, the accuracy of the detection results of the pressure sensor 220 is ensured.

[0063] Referring to Figure 3 , the oil tank 100 also has a third side 103 opposite to the second side 102, and the third side 103 is provided with a sixth mounting seat 116. The power supply 30 is mounted on the oil tank 100 through the sixth mounting seat 116. The power supply 30 is separately mounted on the third side 103 of the oil tank 100, avoiding interference and influence between the power supply 30 and other components.

[0064] Referring to Figure 4 and Figure 5The oil tank 100 also has a fourth side 104 opposite to the first side 101, and the fourth side 104 is provided with a seventh mounting seat 117, through which the circulating pump 500 is mounted to the oil tank 100. The inlet and outlet of the circulating pump 500 are arranged in an up-down manner in the height direction, so that the relatively hot insulating oil at the bottom of the oil tank 100 can be circulated to the position close to the insulating oil liquid level, to ensure the temperature balance of the insulating oil in the oil tank 100.

[0065] In an embodiment, reinforcing ribs are arranged on the surface of the oil tank 100 to improve the structural strength of the oil tank 100.

[0066] In an embodiment, referring to Figure 3 and Figure 4 The top of the oil tank 100 is provided with a plurality of wire passing holes 160.

[0067] The wire passing holes 160 are mainly used for the cables connected to the current control module 400 to pass through, so that the current can be introduced from the external power supply 30 to the fuses 40 in the oil tank 100 through the current control module 400 to complete the current loop. At least one of the plurality of wire passing holes 160 is connected to the positive pole of the circuit, and at least one of the plurality of wire passing holes 160 is connected to the negative pole of the circuit. The plurality of wire passing holes 160 can be arranged in different electrical connection modes according to needs, and support multiple fuses 40 to be tested at the same time. The wire passing holes 160 are usually equipped with appropriate sealing elements (such as rubber gaskets or special sealants) to ensure the sealing of the internal environment of the oil tank 100.

[0068] In other embodiments, the wire passing holes 160 can also be arranged on the third side 103 and close to the top of the oil tank 100.

[0069] In an embodiment, referring to Figures 2 to 4 The bottom of the oil tank 100 is provided with a plurality of rolling wheels 170.

[0070] The rolling wheels 170 allow the operator to easily push the oil tank 100 from one position to another without using heavy machinery or consuming a large amount of manpower. The rolling wheels 170 reduce the friction, so that even a relatively heavy oil tank 100 filled with insulating oil can be relatively easily pushed. Compared with directly dragging the oil tank 100, using the rolling wheels 170 can significantly reduce the wear of the ground,

[0071] The application also provides a test system, which comprises the air source 20, the power supply 30 and the test device 10. The specific structure of the test device 10 is referred to the above-mentioned embodiments. Since the test system adopts all the technical solutions of the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here.

[0072] In an embodiment, referring to Figure 2, the air source 20 is configured as an air compressor.

[0073] The air compressor can compress ambient air and deliver it through a pipeline to the pressure regulating valve 210, which adjusts the amount of gas entering the oil tank 100 according to the set value, thereby achieving precise control of the internal pressure of the oil tank 100. Different types of fuses 40 may require testing under different pressure conditions. The air compressor can adjust the output pressure range according to actual needs to meet the requirements of various experimental conditions.

[0074] In other embodiments, the air source 20 can also be configured as an air tank or the like.

[0075] In an embodiment, please refer to Figure 3 The power supply 30 is configured as a stabilized AC power supply 30.

[0076] The stabilized AC power supply 30 can maintain the stability of the output voltage even if the input voltage fluctuates, thereby accurately controlling the current intensity through the fuse 40, avoiding changes in current caused by unstable voltage, which in turn affects the test results. Moreover, the stabilized AC power supply 30 can effectively prevent damage to the fuse 40 or other electrical components caused by excessively high or low voltage, prolonging the service life of the equipment and ensuring the safety of the test. In addition, different types of fuses 40 may require testing under different voltage conditions, and the stabilized AC power supply 30 usually has a wide range of voltage adjustment capabilities and can flexibly set the output voltage value according to specific test requirements.

[0077] The above description is only an exemplary embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structural transformation made by using the contents of the present application specification and drawings, or direct / indirect application in other related technical fields is included in the patent protection scope of the present application.

Claims

1. A test device, characterized in that An oil pressure sealing test device for a fuse, the test device comprising: an oil tank configured to communicate with a gas source, the oil tank being configured to contain at least part of the fuse; a pressure control module disposed between the gas source and the oil tank, the pressure control module being configured to control a pressure inside the oil tank; a temperature control module disposed in the oil tank, the temperature control module being configured to control a temperature of an insulating oil inside the oil tank; a current control module configured to be electrically connected to a power source and to form a current loop with the fuse, the current control module being configured to control a current passing through the fuse.

2. The test device of claim 1, wherein, The pressure control module comprises a pressure regulating valve disposed in a gas path between the gas source and the oil tank, and a pressure sensor disposed in the oil tank and electrically connected to the pressure regulating valve.

3. The test device of claim 2, wherein, The pressure control module further comprises a one-way valve disposed in a gas path between the pressure regulating valve and the gas source, the one-way valve allowing a one-way flow from the gas source to the pressure regulating valve.

4. The test device of claim 1, wherein The current control module comprises a rheostat and an ammeter, the rheostat and the ammeter being disposed outside the oil tank and configured to be connected in series with the fuse.

5. The test device of claim 1, wherein The temperature control module comprises a heater configured to heat the insulating oil inside the oil tank, and a temperature sensor electrically connected to the heater, the temperature sensor being configured to detect a temperature of the insulating oil.

6. The test device of claim 1, wherein The oil tank has a first side surface, the first side surface being provided with a first mounting seat and an oil receiving tray, the oil receiving tray being disposed below the first mounting seat, the first mounting seat being configured to mount the fuse.

7. The test device of claim 6, wherein The first side surface is further provided with an oil filling valve and an oil discharging valve, the oil filling valve being disposed above the first mounting seat, and the oil discharging valve being disposed below the first mounting seat.

8. The test device of claim 7, wherein The first side surface is further provided with a liquid level gauge, the liquid level gauge being disposed between the oil filling valve and the first mounting seat.

9. The test device of claim 1, wherein, The test device further comprises a circulating pump, an inlet and an outlet of the circulating pump being in communication with the inside of the oil tank. The top of the oil tank is provided with a plurality of wire passing holes. The bottom of the oil tank is provided with a plurality of rolling wheels.

10. A test system, characterized by The test device comprises a gas source, a power source, and any one of the test devices according to claims 1 to 9.

11. The test system of claim 10, wherein, The gas source is configured as an air compressor. The power source is configured as a stabilized AC power source.

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