Multifunctional test tool equipment for gas insulated switchgear

Abstract

The utility model discloses multifunctional test tool equipment for gas insulated switchgear, which has a first test form, a second test form and a third test form, and comprises a tool tank body, a first insulation basin, a wire inlet sleeve, a wire outlet sleeve, a speed measurement sensor and a first contact seat, the left end, the upper end and the right end of the tool tank body are sequentially provided with a first connector, a second connector and a third connector. The first test form is used for carrying out a fracture withstand voltage insulation test between the wire inlet sleeve and the wire outlet sleeve; the second test form is used for testing the ground insulation voltage withstanding level of the first insulation basin and the first conductor; and the third test form is used for carrying out a mechanical characteristic test between the movable contact and the first contact seat. The multifunctional test tool equipment provided by the utility model can accelerate the test period in the process of developing new products, improve the production and test efficiency, save the design and production cost, save time and worry, and facilitate the development and test of new products by manufacturers.

Description

Technical Field

[0001] The utility model relates to the technical field of testing of gas-insulated switchgear, and in particular to a multifunctional testing tooling device for gas-insulated switchgear. Background Art

[0002] Gas-insulated switchgear (GIS) is a key piece of equipment in UHV power grid construction. It encloses circuit breakers, disconnectors, earthing switches, current and voltage transformers, lightning arresters, connecting busbars, and various contacts within a metal housing, which houses components such as incoming and outgoing bushings and an insulation basin. When developing new GIS, existing manufacturers typically first test-produce the entire product. They then perform tests on the insulation basin, outgoing and incoming bushings, and other components, such as the insulation basin, outgoing and incoming bushings, to determine whether the selected components meet product requirements. However, the current process for developing new products sometimes requires multiple trials and production of the entire unit to determine the specifications of components such as the insulation basin, outgoing and incoming bushings. This can lead to component waste, high production costs, and low efficiency. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a multifunctional test fixture for gas-insulated switchgear, which can accelerate the test cycle during the development of new products, improve the efficiency of production and testing, save design and production costs, save time and worry, and facilitate manufacturers to develop and test new products.

[0004] According to a multifunctional test fixture of a gas-insulated switchgear according to an embodiment of the present utility model, it has a first test form, a second test form and a third test form, and includes a fixture tank body, a first insulating basin, an incoming bushing, an outgoing bushing, a speed sensor and a first contact seat, the fixture tank body having an inner cavity, a first interface, a second interface and a third interface being provided at the left end, the upper end and the right end of the fixture tank body respectively, the first interface, the second interface and the third interface being connected to the inner cavity, a main contact insulated from the fixture tank body being fixedly installed in the inner cavity, a movable contact being provided on the main contact so as to slide left and right, the movable contact being electrically connected to the main contact, a driving device being provided on the outside of the fixture tank body, the driving device being used to drive the movable contact to move left and right; a first conductor for electrically connecting to the main contact is provided inside the incoming bushing; a second conductor is provided inside the outgoing bushing; the first contact seat is used to electrically connect to the movable contact wherein, in the first test form, the first insulating basin is detachably mounted on the first interface and closes the first interface, the second interface is detachably mounted on the incoming bushing, the third interface is detachably mounted on the outgoing bushing, the first contact holder is detachably mounted on the second conductor, and the first test form is used to perform a fracture withstand voltage insulation test between the movable contact and the outgoing bushing; in the second test form, the first interface of the tooling tank body is detachably mounted on the first insulating basin, and the second interface is detachably mounted on the incoming bushing, and the second test form is used to test the insulation withstand voltage level of the first insulating basin and the first conductor to the ground; in the third test form, the first interface of the tooling tank body is detachably mounted on the speed sensor, the first contact holder is fixed at the third interface, and the third test form is used to perform a mechanical property test between the movable contact and the first contact holder.

[0005] According to a multifunctional testing tooling equipment of a gas-insulated switchgear according to an embodiment of the present invention, at least the following beneficial effects are achieved: the multifunctional testing tooling equipment provided by the present invention, the tooling tank body of which can simulate and replace the metal shell of the gas-insulated switchgear, first completes insulation tests such as grounding and fracture tests on components such as the outgoing bushing and the incoming bushing, and performs mechanical property tests on the tooling tank body, and determines whether the outgoing bushing, the incoming bushing and other components meet the specifications and models required by the product. Therefore, in the process of developing new gas-insulated switchgear, the multifunctional testing tooling equipment provided by the present invention can first be used to complete relevant tests and experiments on components such as the outgoing bushing and the incoming bushing, and determine whether the outgoing bushing, the incoming bushing and other components meet the specifications and models required by the product, and then conduct subsequent test production of the whole machine, which can reduce the waste of components in the subsequent whole machine test process, and the tooling tank body can be used repeatedly, and only the components to be tested need to be installed as needed, thereby speeding up the test cycle, improving the efficiency of production and testing, saving design and production costs, saving time and worry, and being conducive to manufacturers' development and testing of new products.

[0006] According to some embodiments of the present invention, a cover plate is included, and a temperature rise terminal is installed on the cover plate. In the third test form, the cover plate is installed on the second interface of the tooling tank body.

[0007] According to some embodiments of the present invention, the first test mode is switched to the second test mode by removing the outlet bushing, and the second test mode is switched to the third test mode by replacing the first insulating basin and the incoming bushing with the speed sensor and the cover respectively.

[0008] According to some embodiments of the present invention, a fourth interface is provided at the lower end of the tooling tank body, a second insulating basin is detachably installed on the fourth interface, a third conductor is installed on the second insulating basin, the main contact is detachably installed on the third conductor, a second contact seat is installed on the first insulating basin, and the second contact seat is used to electrically connect with the movable contact.

[0009] According to some embodiments of the present invention, a third contact base is included. In the third test form, the third contact base is installed in the second insulating basin and is electrically connected to the third conductor.

[0010] According to some embodiments of the present invention, the main contact is provided with a through hole, the movable contact can be slidably inserted into the through hole, the movable contact is provided with a rack, the driving device includes a transmission rod, the transmission rod can be rotatably inserted into the tooling tank body, the transmission rod is equipped with a gear, and the gear is engaged with the rack for transmission.

[0011] According to some embodiments of the present invention, the main contact is provided with a socket connected to the through hole, the gear is located in the socket, and the third conductor is detachably plugged into the socket.

[0012] According to some embodiments of the present invention, the first interface, the second interface and the third interface are all provided with flange parts. In the first test form, the first insulating basin, the incoming bushing and the outgoing bushing are connected to the corresponding flange parts by bolts.

[0013] According to some embodiments of the present invention, in the third test form, the speed sensor is mounted on a fixing plate, and the fixing plate is connected to the flange portion at the left end by bolts.

[0014] According to some embodiments of the present invention, in the third test form, the first contact holder is detachably mounted on an insulating support plate, and the insulating support plate is connected to the flange portion at the right end by bolts.

[0015] Additional aspects and advantages of the present invention will be given in part in the description below and in part will become apparent from the description below or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0017] Figure 1 This is a schematic diagram of the internal structure of a multifunctional test fixture for a gas-insulated switchgear according to this practical embodiment when it is in a first test state;

[0018] Figure 2 for Figure 1 A schematic diagram of a multifunctional test fixture for a gas-insulated switchgear is shown on section AA;

[0019] Figure 3 This is a schematic diagram of the internal structure of a multifunctional test fixture for a gas-insulated switchgear according to this practical embodiment when it is in a second test mode;

[0020] Figure 4 This is a schematic diagram of the internal structure of a multifunctional test fixture for a gas-insulated switchgear according to this practical embodiment when it is in a third test mode.

[0021] Reference numerals:

[0022] Tooling tank body 100, inner cavity 110, first interface 120, second interface 130, third interface 140, fourth interface 150, fifth interface 160, flange portion 170, mounting plate 180, first insulating basin 200, second contact seat 210, second insulating basin 300, third conductor 310, accommodating groove 311, avoidance groove 312, incoming bushing 410, first conductor 411, outgoing bushing 420, second conductor 421, speed sensor 510, fixing plate 520, main contact 610, through hole 611, socket 612, plug-in portion 613, movable contact 620, rack 621, fourth conductor 630, drive device 700, transmission rod 710, gear 720, knob 730, cover plate 810, temperature rise terminal 820, first contact seat 910, third contact seat 920, insulating support plate 930. DETAILED DESCRIPTION

[0023] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention and are not to be construed as limiting the present invention.

[0024] In the description of this utility, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this utility and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on this utility.

[0025] In the description of this utility model, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is only for the purpose of distinguishing technical features and should not be understood to indicate or imply relative importance, implicitly specify the number of the indicated technical features, or implicitly specify the order of the indicated technical features.

[0026] In the description of this utility, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in this utility based on the specific content of the technical solution.

[0027] Reference Figures 1 to 4According to a multifunctional test fixture of a gas-insulated switchgear according to an embodiment of the present invention, it has a first test form, a second test form and a third test form, which includes a fixture tank body 100, a first insulating basin 200, an incoming bushing 410, an outgoing bushing 420, a speed sensor 510, and a first contact seat 910. The fixture tank body 100 has an inner cavity 110, and the left end, upper end and right end of the fixture tank body 100 are sequentially provided with a first interface 120, a second interface 130, and a third interface 140. The first interface 120, the second interface 130, and the third interface 140 are sequentially provided with a first interface 120, a second interface 130, and a third interface 140. The port 130 and the third port 140 are in communication with the inner cavity 110. A main contact 610 insulated from the tooling tank body 100 is fixedly installed in the inner cavity 110. A movable contact 620 is provided on the main contact 610 so as to slide left and right. The movable contact 620 is electrically connected to the main contact 610. A driving device 700 is provided on the outside of the tooling tank body 100. The driving device 700 is used to drive the movable contact 620 to move left and right. A first conductor 411 for electrically connecting to the main contact 610 is provided inside the inlet bushing 410; a first conductor 411 for electrically connecting to the main contact 610 is provided inside the outlet bushing 420. The first conductor 421; the first contact seat 910 is used to electrically contact the movable contact 620; wherein, in the first test form, the first interface 120 of the tooling tank body 100 is detachably mounted with the first insulating basin 200, the second interface 130 is detachably mounted with the incoming bushing 410, and the third interface 140 is detachably mounted with the outgoing bushing 420, the first contact seat 910 is detachably mounted on the second conductor 421, and the first test form is used to perform a fracture withstand voltage insulation test between the movable contact 620 and the outgoing bushing 420; in the second test form, the tooling tank body 100 is detachably mounted with the first insulating basin 200, the second interface 130 is detachably mounted with the incoming bushing 410, and the third interface 140 is detachably mounted with the outgoing bushing 420. The first interface 120 of the tank body 100 can be detachably installed with the first insulating basin 200, and the second interface 130 can be detachably installed with the incoming line bushing 410. The second test form is used to test the insulation withstand voltage level of the first insulating basin 200 and the first conductor 411 to the ground; in the third test form, the first interface 120 of the tooling tank body 100 can be detachably installed with the speed sensor 510, and the first contact seat 910 is fixed at the third interface 140. The third test form is used to perform mechanical property testing between the movable contact 620 and the first contact seat 910.

[0028] The multifunctional test fixture provided by the present invention can simulate and replace the metal shell of the gas-insulated switchgear, so that the test results obtained by the multifunctional test fixture are equivalent to the test results of the whole machine. Therefore, the insulation test of the outgoing bushing 420, the incoming bushing 410 and other components to the ground, the fracture and the like as well as the mechanical property test can be completed on the fixture tank 100 to determine whether the outgoing bushing 420, the incoming bushing 410 and other components meet the specifications and models required by the product. Therefore, in the process of developing new gas-insulated switchgear, the test results provided by the present invention can be used first. The multifunctional testing tooling equipment completes the relevant tests and experiments on the outlet bushing 420, the incoming bushing 410 and other components, and determines that the outlet bushing 420, the incoming bushing 410 and other components meet the specifications and models required by the product, and then conducts subsequent test production of the whole machine, which can reduce the waste of components in the subsequent whole machine test process, and the tooling tank body 100 can be used repeatedly, and only the components to be tested need to be installed as needed, thereby speeding up the test cycle, improving the efficiency of production and testing, saving design and production costs, saving time and worry, and being beneficial to manufacturers in developing and testing new products.

[0029] Reference Figure 4 According to some embodiments of the present invention, a cover plate 810 is included, and a temperature rise terminal 820 is installed on the cover plate 810. In the third test form, the cover plate 810 is installed on the second interface 130 of the tooling tank body 100. Therefore, the third test form can also be used for temperature rise testing.

[0030] Reference Figures 1 to 4 According to some embodiments of the present invention, the first test mode is switched to the second test mode by removing the outlet bushing 420, and the second test mode is switched to the third test mode by replacing the first insulating basin 200 and the incoming bushing 410 with the speed sensor 510 and the cover 810, respectively. Thus, the multifunctional testing fixture provided by the present invention can sequentially switch between the first, second, and third test modes to sequentially complete the fracture withstand voltage insulation test, the ground insulation withstand voltage level test, the mechanical properties test, and the temperature rise test. Each test can be smoothly connected to improve the overall test speed.

[0031] During the specific implementation process, when the first test form of the multifunctional test tooling equipment is used for testing, a test voltage is applied from the incoming bushing 410, the outgoing bushing 420 is grounded, and the movable contact 620 and the first contact seat 910 on the second conductor 421 are isolated from each other to form a fracture. At this time, the tooling tank body 100 is insulated from the first conductor 411 and the second conductor 421, so that a fracture withstand voltage insulation test can be performed between the movable contact 620 and the outgoing bushing 420. During the test, the insulating gas corresponding to the product can be filled in the tooling tank body 100 as needed.

[0032] During the specific implementation process, when the second test form of the multifunctional test fixture is used for testing, the test voltage is applied from the incoming bushing 410, and the movable contact 620 is disconnected from the first insulating basin 200, and the fixture tank body 100 is grounded, thereby testing the insulation withstand voltage level of the first conductor 411 and the first insulating basin 200 to the ground.

[0033] During the specific implementation process, when the mechanical characteristics test is performed using the third test form of the multifunctional test fixture equipment, the speed measuring rod of the speed sensor 510 is connected to the movable contact 620, the speed sensor 510 is connected to the positive signal line of a test data processing device, and the negative signal line of the test data processing device is connected to the first contact seat 910. Then, the driving device 700 drives the movable contact 620 to move to the right. When the movable contact 620 contacts the first contact seat 910, the test data processing device will obtain the mechanical characteristics information between the movable contact 620 and the first contact seat 910, thereby completing the mechanical characteristics test.

[0034] During the specific implementation process, when the temperature rise test is performed using the third test form of the multifunctional test fixture equipment, the current input line is connected to the main contact 610, and the first contact is short-circuited with the fixture tank body 100, and the movable contact 620 is in contact with the first contact seat 910, and the temperature rise terminal 820 is connected to the test data processing equipment for communication. Thus, current is applied through the current input line, and the main contact 610 or the movable contact 620 is detected by the temperature rise terminal 820 to complete the temperature rise test.

[0035] According to some embodiments of the present invention, a fourth interface 150 is provided at the lower end of the tooling tank 100. A second insulating basin 300 is detachably mounted on the fourth interface 150. A third conductor 310 is mounted on the second insulating basin 300. The main contact 610 is detachably mounted on the third conductor 310. This arrangement allows the main contact 610 to be installed within the tooling tank 100 while ensuring insulation between the main contact 610 and the tooling tank 100, and facilitates installation of the main contact 610. In the second test configuration, the second insulating basin 300 can also be simultaneously tested for its insulation withstand voltage to ground.

[0036] Reference Figure 1 According to some embodiments of the present invention, a second contact holder 210 is mounted on the first insulating container 200. The second contact holder 210 is configured to electrically connect to the movable contact 620. Therefore, in the second test mode, the movable contact 620 can be slidably inserted into the second contact holder 210 to ensure effective contact between the first insulating container 200 and the movable contact 620, thereby ensuring the accuracy of the insulation withstand voltage test of the first insulating container 200.

[0037] Reference Figure 4According to some embodiments of the present invention, a third contact holder 920 is included. In the third test form, the third contact holder 920 is installed on the second insulating basin 300 and is electrically connected to the third conductor 310. The current input line can be conveniently connected through the third contact holder 920 to facilitate temperature rise testing.

[0038] Reference Figures 1 to 4 According to some embodiments of the present invention, the main contact 610 defines a through hole 611, and the movable contact 620 is slidably disposed in the through hole 611. The movable contact 620 is provided with a rack 621. The drive device 700 includes a transmission rod 710, which is rotatably disposed in the tooling tank 100 and is equipped with a gear 720. The gear 720 engages with the rack 621 for transmission. With this arrangement, the transmission rod 710 can be rotated outside the tooling tank 100, thereby driving the movable contact 620 to slide left and right within the through hole 611.

[0039] Among them, reference Figure 2 The outer end of the transmission rod 710 is connected to a knob 730 to facilitate the rotation of the transmission rod 710.

[0040] In a specific production process, the rack 621 and the movable contact 620 may be formed separately and then connected together, or the rack 621 may be directly processed and formed on the movable contact 620 .

[0041] According to some embodiments of the present invention, the main contact 610 is provided with a socket 612 connected to the through hole 611, the gear 720 is located in the socket 612, and the third conductor 310 is detachably plugged into the socket 612. With the above arrangement, only one socket 612 needs to be opened on the main contact 610, which can simultaneously meet the installation requirements between the main contact 610 and the third conductor 310 and the requirements for the mutual cooperation between the gear 720 and the rack 621.

[0042] Reference Figure 1 and Figure 2In a specific implementation process, a fifth interface 160 is provided on the tooling tank body 100, and a mounting plate 180 is detachably mounted on the fifth interface 160. The transmission rod 710 is rotatably penetrated through the mounting plate 180. The socket 612 is provided along the axial direction of the transmission rod 710. An accommodating groove 311 and an avoidance groove 312 are provided at one end of the third conductor 310 facing the main contact 610. The avoidance groove 312 is connected to the accommodating groove 311. The gear 720 is located in the accommodating groove 311. The transmission rod 710 is inserted into the socket 612, the avoidance groove 312, and the accommodating groove 311. During the assembly of the main contact 610 and the drive device 700, the drive device 700 can be first fixed to the tooling tank 100, and then the main contact 610 and the third conductor 310 can be plugged into each other. During this process, the gear 720 and one end of the transmission rod 710 can be simultaneously installed into the accommodating groove 311 and the socket 612. This can make the assembly of the main contact 610 and the drive device 700 simpler and more convenient.

[0043] It is conceivable that in other embodiments, other transmission methods can also be used between the above-mentioned driving device 700 and the movable contact 620. For example, the above-mentioned gear 720 is replaced by a friction wheel, and the friction wheel contacts and squeezes the movable contact 620 to generate a friction force that drives the movable contact 620 to slide.

[0044] Reference Figure 1 According to some embodiments of the present invention, the first interface 120, the second interface 130 and the third interface 140 are all provided with a flange portion 170. In the first test form, the first insulating basin 200, the incoming bushing 410 and the outgoing bushing 420 are connected to the corresponding flange portion 170 by bolts, and the connection is convenient and firm.

[0045] It should be noted that in other embodiments, the first insulating basin 200, the incoming line bushing 410 and other components may also be installed in other ways. For example, a clamping device may be provided at the first interface 120 to clamp and fix the first insulating basin 200.

[0046] Reference Figure 4 According to some embodiments of the present invention, in the third test form, the speed sensor 510 is mounted on the fixing plate 520, and the fixing plate 520 is connected to the flange portion 170 at the left end by bolts.

[0047] Reference Figure 4 According to some embodiments of the present invention, in the third test form, the first contact seat 910 is fixedly installed on the insulating support plate 930, and the insulating support plate 930 is connected to the flange portion 170 located at the right end by bolts, thereby enabling the first contact seat 910 to be fixed to the tooling tank body 100.

[0048] Reference Figure 1According to some embodiments of the present invention, a plug-in portion 613 is provided on the main contact 610. In a first test configuration, if the first conductor 411 is sufficiently long, the first conductor 411 is directly electrically plugged into the plug-in portion 613. Alternatively, if the first conductor 411 is not long enough, the plug-in portion 613 can be first plugged into the fourth conductor 630, which is then plugged into the first conductor 411. This configuration facilitates assembly and disassembly of the inlet bushing 410 and the first conductor 411.

[0049] The multifunctional testing tooling equipment provided by the present invention can perform relevant tests on the first insulating basin 200, the incoming bushing 410, the outgoing bushing 420, the first contact seat 910, the movable contact 620 and other components of the gas-insulated switchgear on the tooling tank body 100. These components can be disassembled and replaced on the tooling tank body 100, and the disassembly and assembly is relatively convenient.

[0050] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0051] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A multifunctional test fixture for gas insulated switchgear, characterized in that: It has a first test form, a second test form and a third test form, which include: A tooling tank body (100) has an inner cavity (110), and a first interface (120), a second interface (130), and a third interface (140) are sequentially provided at the left end, the upper end, and the right end of the tooling tank body (100), wherein the first interface (120), the second interface (130), and the third interface (140) are in communication with the inner cavity (110), and a main contact (610) insulated from the tooling tank body (100) is fixedly installed in the inner cavity (110), and a movable contact (620) is provided on the main contact (610) so as to slide left and right, and the movable contact (620) is electrically connected to the main contact (610), and a driving device (700) is provided on the outside of the tooling tank body (100), and the driving device (700) is used to drive the movable contact (620) to move left and right; a first insulating basin (200); An incoming line bushing (410) is provided with a first conductor (411) therein for being electrically connected to the main contact (610); An outlet bushing (420) having a second conductor (421) disposed therein; Speed ​​sensor (510); A first contact seat (910) for electrically contacting the movable contact (620); Wherein, in the first test form, the first insulating basin (200) is detachably mounted on the first interface (120) and closes the first interface (120), the second interface (130) is detachably mounted on the incoming bushing (410), the third interface (140) is detachably mounted on the outgoing bushing (420), the first contact seat (910) is detachably mounted on the second conductor (421), and the first test form is used to perform a fracture withstand voltage insulation test between the movable contact (620) and the outgoing bushing (420); In the second test form, the first interface (120) of the tooling tank body (100) is detachably mounted on the first insulating basin (200), and the second interface (130) is detachably mounted on the incoming line bushing (410). The second test form is used to test the insulation withstand voltage level of the first insulating basin (200) and the first conductor (411) to ground; In the third test form, the first interface (120) of the tooling tank body (100) is detachably mounted with the speed sensor (510), and the first contact seat (910) is fixed at the third interface (140). The third test form is used to perform a mechanical property test between the movable contact (620) and the first contact seat (910).

2. The multifunctional test fixture for gas-insulated switchgear according to claim 1, characterized in that: The device comprises a cover plate (810), wherein the cover plate (810) is installed with a temperature rise terminal (820). In the third test form, the cover plate (810) is installed on the second interface (130) of the tooling tank body (100).

3. The multifunctional test fixture for gas-insulated switchgear according to claim 2, characterized in that: The first test mode is switched to the second test mode by disassembling the outlet bushing (420), and the second test mode is switched to the third test mode by replacing the first insulating basin (200) and the incoming bushing (410) with the speed sensor (510) and the cover plate (810), respectively.

4. The multifunctional test fixture for gas-insulated switchgear according to claim 2, characterized in that: A fourth interface (150) is provided at the lower end of the tooling tank body (100), and a second insulating basin (300) is detachably mounted on the fourth interface (150), a third conductor (310) is mounted on the second insulating basin (300), and the main contact (610) is detachably mounted on the third conductor (310), and a second contact seat (210) is mounted on the first insulating basin (200), and the second contact seat (210) is used for electrically connecting with the movable contact (620).

5. The multifunctional test fixture for gas-insulated switchgear according to claim 4, characterized in that: It comprises a third contact base (920). In the third test form, the third contact base (920) is installed on the second insulating basin (300) and is electrically connected to the third conductor (310).

6. The multifunctional test fixture for gas-insulated switchgear according to claim 4, characterized in that: The main contact (610) is provided with a through hole (611), the movable contact (620) is slidably inserted into the through hole (611), the movable contact (620) is provided with a rack (621), the driving device (700) includes a transmission rod (710), the transmission rod (710) is rotatably inserted into the tooling tank body (100), the transmission rod (710) is provided with a gear (720), and the gear (720) is meshed with the rack (621) for transmission.

7. The multifunctional test fixture for gas-insulated switchgear according to claim 6, characterized in that: The main contact (610) is provided with a socket (612) communicating with the through hole (611), the gear (720) is located in the socket (612), and the third conductor (310) is detachably plugged into the socket (612).

8. The multifunctional test fixture for gas-insulated switchgear according to claim 1, characterized in that: The first interface (120), the second interface (130), and the third interface (140) are all provided with flange portions (170); in the first test form, the first insulating basin (200), the incoming line bushing (410), and the outgoing line bushing (420) are connected to the corresponding flange portions (170) via bolts.

9. The multifunctional test fixture for gas-insulated switchgear according to claim 8, characterized in that: In the third test form, the speed sensor (510) is mounted on a fixing plate (520), and the fixing plate (520) is connected to the flange portion (170) at the left end via bolts.

10. The multifunctional test fixture for gas-insulated switchgear according to claim 8, characterized in that: In the third test form, the first contact seat (910) is detachably mounted on the insulating support plate (930), and the insulating support plate (930) is connected to the flange portion (170) located at the right end via bolts.

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