A closed type power frequency and impulse combined test system

Abstract

The utility model relates to the technical field of power equipment test, concretely is a closed type power frequency and impact combined test system, include; the armored shell, the armored shell upside is fixedly arranged with first electric control switch and second electric control switch, and first electric control switch and second electric control switch all are electrically connected through the power connection line, and one end of power connection line is electrically connected with test product, and the one side of first electric control switch is inserted with impact voltage generator, and the one side of second electric control switch is fixedly arranged with test power supply, and first electric control switch is used to cut off the electric connection between impact voltage generator and product, and second electric control switch is used to cut off the electric connection between test power supply and impact voltage generator, and impact voltage generator and test power supply all are located in the inside of armored shell. Gas insulates impact voltage generator and test power supply, and the gas can be SF6, so not only can improve the insulation performance, but also can reduce the required air volume, can further reduce the use area of the use equipment.

Description

Technical Field

[0001] This utility model relates to a closed-loop power frequency and impact combined test system, belonging to the field of power equipment testing technology. Background Technology

[0002] Both factory tests and field tests of power equipment require lightning impulse withstand voltage tests and power frequency withstand voltage tests, and impulse voltage is usually generated by an impulse voltage generator.

[0003] Currently, the most commonly used impulse voltage generators are open-type impulse voltage generators, which use air as the insulating medium. These open-type impulse generators are limited by the low dielectric strength of air, resulting in a large size and increasing the space required in the laboratory.

[0004] Therefore, it is urgent to improve the closed-loop power frequency and impact combined test system to solve the above-mentioned problems. Utility Model Content

[0005] The purpose of this invention is to provide a closed-loop power frequency and impulse combined test system. The gas used is SF6 to insulate the impulse voltage generator and the test power supply. This not only improves the insulation performance but also reduces the required air volume, thereby further reducing the area required for the equipment.

[0006] To achieve the above objectives, the main technical solution adopted by this utility model includes: a closed power frequency and impact combined test system, comprising: an armored shell, wherein a first electronic control switch and a second electronic control switch are fixedly disposed on the upper side of the armored shell, the first electronic control switch and the second electronic control switch are electrically connected through a power connection line, and one end of the power connection line is electrically connected to the test product; An impulse voltage generator is plugged into one side of the first electronic control switch, and a test power supply is fixedly installed on one side of the second electronic control switch. The first electronic control switch is used to disconnect the electrical connection between the impulse voltage generator and the product, and the second electronic control switch is used to disconnect the electrical connection between the test power supply and the impulse voltage generator. Both the impulse voltage generator and the test power supply are located inside the armored housing, and the armored housing is filled with gas.

[0007] Preferably, the test power supply and the impulse voltage generator are electrically connected via the power connection line, and the impulse voltage generator is electrically connected to the product via the power connection line.

[0008] Preferably, a support base is fixedly provided at the bottom of the impulse voltage generator, and the impulse voltage generator is placed inside the armored shell through the support base, which is used to support the impulse voltage generator.

[0009] Preferably, the upper half of the impulse voltage generator is fitted with a limiting collar, and support rods are fixedly provided on both sides of the limiting collar. One end of the support rod is fixedly connected to the inner wall of the armor shell, and the limiting collar is used to limit the position of the impulse voltage generator.

[0010] Preferably, the limiting collar is composed of two semicircles, and a connecting shaft is rotatably provided at one end of each semicircle. The limiting collar is opened by rotating through the connecting shaft. A rotating plate is rotatably provided on the side of the limiting collar away from the connecting shaft. A locking rod is fixedly provided on one side of the limiting collar. The rotating plate is slidably connected to the locking rod through a groove.

[0011] Preferably, the limiting collar has sliding grooves on both sides, and the limiting collar is slidably connected to one end of the support rod through the sliding grooves.

[0012] Preferably, a gas filling valve is fixedly provided on one side of the armor shell, and the gas filling valve is used for filling gas.

[0013] Preferably, a grounding grid is fixedly provided at the lower end of the armor shell.

[0014] This utility model has at least the following beneficial effects: The armored housing can enclose the impulse voltage generator and the test power supply, and then use gas to insulate the impulse voltage generator and the test power supply. The gas can be SF6. This not only improves the insulation performance, but also reduces the required air volume, thereby further reducing the area of ​​the equipment used. A grounding grid is fixedly installed at the lower end of the armor shell. The grounding grid ensures that the surface of the armor shell is not electrified, effectively preventing operators from being electrocuted due to accidental contact. Attached Figure Description

[0015] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1 This is a schematic diagram of the overall three-dimensional structure of a closed power frequency and impact combined test system according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the interior of the armored shell of a closed power frequency and impact combined test system according to an embodiment of this utility model; Figure 3 This is a schematic diagram showing the separation of the impulse voltage generator and test power supply from the armored shell in an embodiment of the present invention for a closed power frequency and impulse combined test system. Figure 4 This is a schematic diagram of the three-dimensional structure of the limiting collar of a closed power frequency and impact combined test system according to an embodiment of the present invention. Figure 5 This is a schematic diagram of the back of the armored shell of a closed power frequency and impact combined test system according to an embodiment of the present invention.

[0016] In the diagram, 1. Armored shell; 2. Grounding grid; 3. First electric control switch; 4. Second electric control switch; 5. Power connection line; 6. Impulse voltage generator; 7. Limiting collar; 8. Support rod; 9. Support base; 10. Test power supply; 11. Rotating plate; 12. Clamping rod; 13. Slide groove; 14. Connecting shaft; 15. Gas valve. Detailed Implementation

[0017] The following will describe in detail the implementation of this application with reference to the accompanying drawings and embodiments, so that the implementation process of how this application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0018] Examples, such as Figures 1-5 As shown, a closed-type power frequency and impulse combined testing system includes: an armored housing 1, with a first electrical control switch 3 and a second electrical control switch 4 fixedly mounted on the upper side of the armored housing 1. Both the first electrical control switch 3 and the second electrical control switch 4 are electrically connected via a power connection cable 5. One end of the power connection cable 5 is electrically connected to the test product. An impulse voltage generator 6 is plugged into one side of the first electrical control switch 3, and a test power supply 10 is fixedly mounted on one side of the second electrical control switch 4. The first electrical control switch 3 is used to disconnect the electrical connection between the impulse voltage generator 6 and the product, and the second electrical control switch 4 is used to disconnect the electrical connection between the test power supply 10 and the impulse voltage generator 6. The test power supply 10 and the impulse voltage generator 6 are connected via the power connection cable... 5. Electrical Connection: The impulse voltage generator 6 is electrically connected to the product via the power connection cable 5. After the power connection cable 5 is electrically connected to the product to be tested, the impulse voltage generator 6 can be used to test the product. At the same time, the operator can also use the first electrical control switch 3 to disconnect the electrical connection between the impulse voltage generator 6 and the product, so that the impulse voltage generator 6 will no longer act on the product. Meanwhile, the test power supply 10 can provide power to the impulse voltage generator 6, so that the impulse voltage generator 6 can be powered on and used normally. Similarly, the second electrical control switch 4 can also disconnect the electrical connection between the test power supply 10 and the impulse voltage generator 6, so that the device is completely disconnected. This structure can be used in emergency situations.

[0019] Both the impulse voltage generator 6 and the test power supply 10 are located inside the armored housing 1, which is filled with gas. The armored housing 1 can enclose the impulse voltage generator 6 and the test power supply 10, and then use gas to insulate the impulse voltage generator 6 and the test power supply 10. The gas can be SF6, which can not only improve the insulation performance, but also reduce the required air volume, thereby further reducing the area of ​​the equipment. A grounding grid 2 is fixedly installed at the lower end of the armored housing 1. The installation of the grounding grid 2 can prevent the surface of the armored housing 1 from being charged, effectively preventing the operator from being shocked due to accidental contact.

[0020] Furthermore, a support base 9 is fixedly installed at the bottom of the impulse voltage generator 6. The impulse voltage generator 6 is placed inside the armored shell 1 through the support base 9, which supports the impulse voltage generator 6. A limiting collar 7 is sleeved on the upper half of the impulse voltage generator 6. Support rods 8 are fixedly installed on both sides of the limiting collar 7. One end of the support rod 8 is fixedly connected to the inner wall of the armored shell 1. The limiting collar 7 is used to limit the position of the impulse voltage generator 6. When the impulse voltage generator 6 is placed inside the armored shell 1, it can be stably placed inside the armored shell 1 through the support base 9, so that the impulse voltage generator 6 can be used normally. In order to further improve the stability of the impulse voltage generator 6, a limiting collar 7 is sleeved on the upper half of the impulse voltage generator 6, and then the limiting collar 7 can be fixed to the inner wall of the armored shell 1 through the support rods 8, thereby further stabilizing the impulse voltage generator 6.

[0021] Furthermore, the limiting collar 7 is composed of two semicircles, each with a connecting shaft 14 rotatably mounted at one end. The limiting collar 7 opens by rotating the connecting shaft 14. A rotating plate 11 is rotatably mounted on the side of the limiting collar 7 away from the connecting shaft 14, and a locking rod 12 is fixedly mounted on one side of the limiting collar 7. The rotating plate 11 is slidably connected to the locking rod 12 via a sliding groove. Sliding grooves 13 are provided on both opposite sides of the limiting collar 7, and the limiting collar 7 is slidably connected to one end of the support rod 8 via the sliding grooves 13. To facilitate the connection between the impulse voltage generator 6 and the limiting collar 7... The limiting collar 7 can be opened by rotation, so that the limiting collar 7 will not limit the impulse voltage generator 6. At the same time, in order to lock the opening on one side of the limiting collar 7, after the limiting collar 7 is fitted with the impulse voltage generator 6, the operator can manually rotate the rotating plate 11 so that one side of the rotating plate 11 can slide with the locking rod 12 through the sliding groove. In this way, the opening of the limiting collar 7 can be locked by the rotating plate 11 and the locking rod 12, so that the limiting collar 7 can not fail to limit the impulse voltage generator 6 during use. In order to prevent the support rod 8 from affecting the separation when the limiting collar 7 separates from the impact voltage generator 6, sliding grooves 13 are opened on opposite sides of the limiting collar 7. The support rod 8 can slide and connect with the limiting collar 7 through the sliding grooves 13. Thus, when the limiting collar 7 is pried open, the support rod 8 can interact with the limiting collar 7 by sliding, so that the support rod 8 will not affect the opening of the limiting collar 7. It should be noted that the reference Figure 4 Both support rods 8 are equipped with pivots at their corners, which means that the two support rods 8 can rotate through the pivots, thus further preventing the support rods 8 from obstructing the opening of the limiting collar 7.

[0022] Furthermore, a gas filling valve 15 is fixedly installed on one side of the armor shell 1. The gas filling valve 15 is used for gas filling. When the gas inside the armor shell 1 is insufficient, the operator can fill the armor shell 1 with gas through the gas filling valve 15.

[0023] In this embodiment, as Figures 1-5 As shown in the figure, the principle of the closed-loop power frequency and impact combined test system provided in this embodiment is as follows: After the power supply cable 5 is electrically connected to the product to be tested, the impulse voltage generator 6 can be used to test the product. At the same time, the operator can also use the first electrical control switch 3 to disconnect the electrical connection between the impulse voltage generator 6 and the product, so that the impulse voltage generator 6 will no longer act on the product. Meanwhile, the test power supply 10 can provide power to the impulse voltage generator 6, so that the impulse voltage generator 6 can be powered on and used normally. Similarly, the second electrical control switch 4 can also disconnect the electrical connection between the test power supply 10 and the impulse voltage generator 6, so that the device is fundamentally disconnected. The armored housing 1 can enclose the impulse voltage generator 6 and the test power supply 10. Then, the impulse voltage generator 6 and the test power supply 10 are insulated by gas, which can be SF6. This not only improves the insulation performance, but also reduces the required air volume, thereby further reducing the area of ​​the equipment. A grounding grid 2 is fixedly installed at the lower end of the armored housing 1. The installation of the grounding grid 2 can prevent the surface of the armored housing 1 from being charged, effectively preventing accidental contact by the operator.

[0024] If certain terms are used in the specification and claims to refer to specific components, those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" throughout the specification and claims is an open-ended term and should be interpreted as "comprising but not limited to." "Approximately" means that within an acceptable margin of error, those skilled in the art can solve the technical problem and substantially achieve the technical effect within a certain margin of error.

[0025] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a product or system comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a product or system. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the product or system that includes that element.

[0026] The foregoing description illustrates and describes several preferred embodiments of the present invention. However, as previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. A closed-loop power frequency and impact combined testing system, characterized in that, include: The armor shell (1) has a first electric control switch (3) and a second electric control switch (4) fixedly installed on its upper side. The first electric control switch (3) and the second electric control switch (4) are electrically connected through a power connection line (5). One end of the power connection line (5) is electrically connected to the test product. An impulse voltage generator (6) is plugged into one side of the first electronic control switch (3), and a test power supply (10) is fixedly installed on one side of the second electronic control switch (4). The first electronic control switch (3) is used to disconnect the electrical connection between the impulse voltage generator (6) and the product, and the second electronic control switch (4) is used to disconnect the electrical connection between the test power supply (10) and the impulse voltage generator (6). The impulse voltage generator (6) and the test power supply (10) are both located inside the armored shell (1), and the armored shell (1) is filled with gas.

2. The closed-loop power frequency and impact combined test system according to claim 1, characterized in that: The test power supply (10) and the impulse voltage generator (6) are electrically connected through the power connection line (5), and the impulse voltage generator (6) is electrically connected to the product through the power connection line (5).

3. The closed-loop power frequency and impact combined test system according to claim 1, characterized in that: The impulse voltage generator (6) is fixedly provided with a support base (9) at its bottom. The impulse voltage generator (6) is placed inside the armor shell (1) through the support base (9). The support base (9) is used to support the impulse voltage generator (6).

4. The closed-loop power frequency and impact combined test system according to claim 1, characterized in that: The upper half of the impulse voltage generator (6) is fitted with a limiting collar (7). Support rods (8) are fixedly provided on both sides of the limiting collar (7). One end of the support rod (8) is fixedly connected to the inner wall of the armor shell (1). The limiting collar (7) is used to limit the position of the impulse voltage generator (6).

5. A closed-loop power frequency and impact combined test system according to claim 4, characterized in that: The limiting collar (7) is composed of two semicircles, and a connecting shaft (14) is rotatably provided at one end of each semicircle. The limiting collar (7) is opened by rotating through the connecting shaft (14). A rotating plate (11) is rotatably provided on the side of the limiting collar (7) away from the connecting shaft (14). A locking rod (12) is fixedly provided on one side of the limiting collar (7). The rotating plate (11) is slidably connected to the locking rod (12) through a sliding groove.

6. The closed-loop power frequency and impact combined test system according to claim 5, characterized in that: The limiting collar (7) has sliding grooves (13) on both sides, and the limiting collar (7) is slidably connected to one end of the support rod (8) through the sliding grooves (13).

7. The closed-loop power frequency and impact combined test system according to claim 1, characterized in that: A gas filling valve (15) is fixedly installed on one side of the armor shell (1), and the gas filling valve (15) is used for gas filling.

8. The closed-loop power frequency and impact combined test system according to claim 1, characterized in that: A grounding grid (2) is fixedly installed at the lower end of the armor shell (1).

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