Height-adjustable transverse isolation sphere gap device for direct current superposition impact test

Abstract

The utility model relates to the technical field of electrical test equipment, in particular to a height-adjustable transverse isolation sphere gap device for a direct current superposition impact test. According to the technical scheme, the device comprises a base, supporting platforms, supporting devices and adjusting devices, the two supporting platforms are both arranged on the base, the supporting platforms are both connected with ignition balls through the supporting devices, and the multiple sets of adjusting devices are vertically assembled on the base; the adjusting device comprises a screw rod, a connecting column and a supporting leg; the screw rod is in threaded fit with the supporting platform, the two ends of the screw rod extend to the upper portion and the lower portion of the supporting platform respectively, the connecting column is fixed to the top of the screw rod, and the supporting feet are fixed to the bottom of the screw rod. Through the arrangement of the adjusting device, the height of the base can be adjusted, and wiring in the test is facilitated; and the screw rod is rotated by rotating the connecting column, so that the distance between the supporting leg and the base is adjusted, and wiring in the assembling stage is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of electrical testing equipment technology, and in particular to a horizontally placed isolation ball gap device for DC superimposed impact testing with adjustable height. Background Technology

[0002] A DC superimposed impulse test system is a device used to test the insulation performance and transient overvoltage withstand capability of electrical equipment. It is used to evaluate the insulation performance, withstand capability, and dynamic response characteristics of power equipment (such as high-voltage circuit breakers, transformers, cables, etc.) under the combined action of DC voltage and transient impulse voltage.

[0003] During testing, isolation ball gap devices are usually used. However, current isolation ball gap devices are usually vertical, which takes up a large area and is not conducive to adjusting the spacing between ignition balls. At the same time, the height of the base cannot be adjusted, which is inconvenient for wiring during pre-ignition preparation. The ignition balls are set high, and a lifting platform is required when installing the power supply cable, which is inconvenient to operate. Utility Model Content

[0004] To address the problems existing in the background technology, this utility model proposes a horizontal DC superposition impact test device that facilitates wiring during pre-ignition preparation.

[0005] The technical solution of this utility model is as follows: a height-adjustable horizontal isolation ball gap device for DC superimposed impact testing, comprising a base, a support platform, a support device, and an adjustment device. Two support platforms are provided, both mounted on the base. Each support platform is connected to an ignition ball via the support device. Multiple sets of adjustment devices are provided, and these sets are vertically mounted on the base. Each adjustment device includes a screw, a connecting column, and a support leg. The screw is threaded onto the support platform, with its two ends extending above and below the support platform, respectively. The connecting column is fixed to the top of the screw, and the support leg is fixed to the bottom of the screw.

[0006] Preferably, the support platform includes a fixed platform and a movable platform, and the base is provided with a driving device for driving the movable platform to move in order to adjust the distance between the two ignition balls.

[0007] Preferably, the support device includes a flange seat, a support cylinder, and a transition connector. The flange seat is used to connect with the fixed platform or the movable platform. The support cylinder is installed on the top of the flange seat and is coaxially arranged with the flange seat. The transition connector is installed on the top of the support cylinder and is used to connect with the ignition ball.

[0008] Preferably, the drive device includes a geared motor, a ball screw, and a ball nut. The geared motor is fixed on the base, one end of the ball screw is fixed to the output end of the geared motor through a coupling, the ball nut cooperates with the ball screw, and the ball screw is embedded in the movable platform.

[0009] Preferably, the movable platform is provided with rollers on both sides, and the movable platform can move along the driving direction of the driving device by means of the rollers.

[0010] Preferably, the base is provided with at least one set of guide structures, and when the driving device drives the movable platform to move, the movable platform moves along the guide structures.

[0011] Preferably, the guide structure includes two guide rod fixing seats fixed to the surface of the base, and a guide rod penetrating the movable platform is provided between the two guide rod fixing seats.

[0012] Preferably, the support sleeve includes a first lifting sleeve, a second lifting sleeve, a third lifting sleeve, and a fourth lifting sleeve. The first lifting sleeve, the second lifting sleeve, the third lifting sleeve, and the fourth lifting sleeve are all made of insulating material. The first lifting sleeve, the second lifting sleeve, the third lifting sleeve, and the fourth lifting sleeve are sequentially sleeved together. The first lifting sleeve is installed on the top of the flange seat. A lifting device is installed inside the first lifting sleeve. An installation plate is provided inside the fourth lifting sleeve. The lifting end of the lifting device is connected to the installation plate.

[0013] Preferably, the lifting device is an electric multi-section lifting rod or a multi-section lifting hydraulic rod, and the first lifting sleeve has a corresponding mounting hole on its side wall for the cable routing of the lifting device.

[0014] Compared with the prior art, the present invention has the following beneficial technical effects:

[0015] This utility model allows for adjustment of the base height through the setting of an adjustment device, facilitating wiring during testing. Specifically, the connecting post facilitates compatibility with external rotating tools, the screw engages with a threaded hole pre-set on the base, and the support leg can contact the ground. By rotating the connecting post, the screw can be rotated, thereby adjusting the distance between the support leg and the base, which is beneficial for wiring during the assembly stage.

[0016] The height of the support cylinder can also be adjusted to facilitate the installation of cables for the ignition ball. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2This is a front view of the horizontal DC superimposed impact test device in this embodiment of the present invention;

[0019] Figure 3 This is a top view of the horizontally mounted DC superimposed impact test device in this embodiment of the present invention;

[0020] Figure 4 This is a front view of the base in an embodiment of this utility model;

[0021] Figure 5 for Figure 2 Enlarged view of a portion of point A in the middle;

[0022] Figure 6 This is a sectional view of the support cylinder.

[0023] In the diagram, 1 is the base, 2 is the fixed platform, 3 is the flange seat, 4 is the support cylinder, 41 is the first lifting sleeve, 42 is the second lifting sleeve, 43 is the third lifting sleeve, 44 is the fourth lifting sleeve, 45 is the ignition ball, 5 is the equalizing ring, 6 is the transition connector, 7 is the guide rod, 9 is the ball screw, 10 is the guide rod fixing seat, 11 is the ball screw fixing seat, 12 is the coupling, 13 is the geared motor, 14 is the movable platform, 15 is the roller, 16 is the guide nylon sleeve, 17 is the ball nut, 18 is the moving device, 19 is the adjusting device, 191 is the connecting column, 192 is the screw, and 193 is the bracket. Detailed Implementation

[0024] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0025] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "vertical", "horizontal", "inner", "outer", "front", "back", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] like Figures 1 to 5As shown, the height-adjustable horizontal isolation ball gap device for DC superimposed impact testing proposed in this utility model includes a base 1, a support platform, a support device, and an adjustment device 19. There are two support platforms, both of which are mounted on the base 1. Each support platform is connected to an ignition ball 5 through the support device. There are multiple sets of adjustment devices 19, and the multiple sets of adjustment devices 19 are vertically mounted on the base 1. The adjustment device includes a screw 192, a connecting column 191, and a support leg 193. The screw 192 is threaded onto the support platform and its two ends extend to the top and bottom of the support platform, respectively. The connecting column 191 is fixed to the top of the screw 192, and the support leg 193 is fixed to the bottom of the screw 192.

[0027] The height of the base 1 can be adjusted by setting the adjustment device, which facilitates wiring during the test. Specifically, the connecting post 191 is set to facilitate the adaptation to external rotating tools, the screw 192 is engaged with the threaded hole pre-set on the base 1, and the support leg 193 can contact the ground. By rotating the connecting post 191, the screw 192 can be rotated, thereby adjusting the distance between the support leg 193 and the base 1, which is beneficial for wiring during the assembly stage.

[0028] The support platform includes a fixed platform 2 and a movable platform 14. A drive device is provided on the base to drive the movable platform 14 to move in order to adjust the distance between the two ignition balls 5.

[0029] In this scheme, the movable platform 14 is moved by the drive device, thereby adjusting the distance between the support device and the ignition ball 5, and thus controlling the ignition distance. This makes it easier to test the penetration distance. Compared with the traditional vertical test device, it occupies less space and is easier to control.

[0030] In this embodiment, the support device includes a flange seat 3, a support cylinder 4, and a transition connector 7. The flange seat 3 is used to connect with the fixed platform 2 or the movable platform 14. The support cylinder 4 is installed on the top of the flange seat 3 and is coaxially arranged with the flange seat 3. The transition connector 7 is installed on the top of the support cylinder 4 and is used to connect with the ignition ball 5.

[0031] See Figure 6The support sleeve 4 includes a first lifting sleeve 41, a second lifting sleeve 42, a third lifting sleeve 43, and a fourth lifting sleeve 44. All four sleeves are made of insulating material and are sequentially fitted together. The first lifting sleeve 41 is mounted on the top of the flange seat and contains a lifting device 45. The fourth lifting sleeve 44 contains a mounting plate 46, and the lifting end of the lifting device 45 is connected to the mounting plate 46. The lifting sleeves are conventional components that can be raised together and have a limiting structure. The specific structure is not described in detail. When the fourth lifting sleeve 44 rises to its upper limit under the action of the lifting device 45, it will raise the third lifting sleeve 43, and so on. To lower it, the operation is reversed. When wiring the ignition ball 5 is required, it can be lowered, and raised to the specified position during testing, without the need for a lifting platform, making operation convenient.

[0032] The lifting device 45 is an electric multi-section lifting rod or a multi-section lifting hydraulic rod. The first lifting sleeve 41 has corresponding mounting holes on its side wall for wiring of the lifting device 45. This is conventional technology, and the specific control and wiring details will not be elaborated further.

[0033] First, it should be noted that the fixed platform 2 is fixed to the surface of the base 1 to secure one of the ignition balls 5. The flange seat 3 is fixed to the fixed platform 2 or the movable platform 14 by fasteners, such as nuts. The support cylinder 4 supports the ignition ball 5 and maintains it at a certain height. The transition connector 7 connects the ignition ball 5 and the support cylinder 4. Since the movable platform 14 is movable, the spacing between the ignition balls 5 can be adjusted at a certain height. It should be further noted that an equalizing ring 6 is provided on the ignition ball 5. In high-voltage testing equipment, especially near high-voltage terminals, the concentrated electric field can lead to partial discharge or uneven electric field distribution. The equalizing ring 6 is designed to improve the electric field distribution.

[0034] Furthermore, the drive device includes a geared motor 13, a ball screw 9, and a ball nut 17. The geared motor 13 is fixed on the base 1. One end of the ball screw 9 is fixed to the output end of the geared motor 13 through a coupling 12. A ball screw mounting seat 11 is provided on the base 1. The other end of the ball screw 9 is mounted on the ball screw mounting seat 11. The ball nut 17 cooperates with the ball screw 9, and the ball screw 9 is embedded in the movable platform 14.

[0035] Specifically, the geared motor 13 drives the ball screw 9 to rotate under the action of the coupling 12, thereby cooperating with the ball nut 17 to allow the movable platform 14 to move along the driving direction of the drive device, thus realizing the movement of the movable platform 14 and adjusting the spacing between the ignition balls 5. It should be noted that since the high-voltage breakdown needs to be far away, the control device of the drive device can be set at a remote location, such as in the control room, to ensure the safety of the test.

[0036] Furthermore, rollers 15 are provided on both sides of the movable platform 14, allowing the movable platform 14 to move along the driving direction of the drive device via the rollers 15. Since the movable platform 14 and the base 1 are in a relatively movable state, the movement of the movable platform 14 is smoother and the resistance during movement is reduced when the drive device drives the movable platform 14 to move.

[0037] Furthermore, the base 1 is provided with at least one set of guide structures. When the drive device drives the movable platform 14 to move, the movable platform 14 moves along the guide structures. The guide structures ensure that the movable platform 14 moves along the direction of the guide structures during the movement, making the movement more stable.

[0038] Specifically, the guide structure includes two guide rod fixing seats 10 fixed to the surface of the base 1, and a guide rod 8 passing through the movable platform 14 is provided between the two guide rod fixing seats 10.

[0039] During movement, the movable platform 14 moves along the guide rod 8, bringing the fixed platform 2 and the movable platform 14 closer together. In this embodiment, a guide nylon sleeve 16 is provided inside the movable platform 14, and the guide rod 8 passes through the guide nylon sleeve 16, allowing the movable platform 14 to move through the guide nylon sleeve 16. As an optional embodiment, the bottom of the base 1 is provided with a lockable moving device to facilitate the movement and fixation of the testing device.

[0040] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium. Those skilled in the art will understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0041] The above specific embodiments are merely one or more preferred embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A highly adjustable horizontal standoff-sphere gap device for use in a DC superimposed impulse test, characterized by: The device comprises a base, a support platform, a support device and an adjusting device, the support platform is provided with two and is arranged on the base, and the support platform is connected with the ignition ball through the support device respectively; The adjusting device is provided with multiple groups, and the multiple groups of adjusting devices are vertically assembled on the base; the adjusting device comprises a screw rod, a connecting column and a supporting leg; the screw rod is threadedly connected with the support platform and extends above and below the support platform respectively, the connecting column is fixed to the top of the screw rod, and the supporting leg is fixed to the bottom of the screw rod.

2. The horizontally disposed isolated spherical gap device for high adjustable direct current superimposed impulse test according to claim 1, characterized in that, The support platform comprises a fixed platform and a movable platform, the base is provided with a driving device, the driving device is used for driving the movable platform to move, so as to adjust the distance between the two ignition balls.

3. The horizontally disposed isolated spherical gap device for use in a high-DC superimposed impulse test of claim 2, wherein, The support device comprises a flange seat, a support cylinder and a transition connecting piece, the flange seat is used for connecting with the fixed platform or the movable platform, the support cylinder is installed at the top of the flange seat and is coaxially arranged with the flange seat, and the transition connecting piece is installed at the top of the support cylinder and is used for connecting with the ignition ball.

4. The horizontally disposed isolated spherical gap device for high adjustable DC superimposed impulse test according to claim 2, wherein, The driving device comprises a speed reducer, a ball screw and a ball nut, the speed reducer is fixed to the base, one end of the ball screw is fixed to the output end of the speed reducer through a shaft coupling, the ball nut is matched with the ball screw, and the ball screw is embedded in the movable platform.

5. The horizontally disposed isolated spherical gap device for use in a high-DC superimposed impulse test of claim 4, wherein, The movable platform is provided with rollers on both sides, and the movable platform can walk along the driving direction of the driving device through the rollers.

6. The horizontally disposed isolated spherical gap device for high adjustable DC superimposed impulse test according to claim 4, wherein, The base is provided with at least one set of guide structure, when the driving device drives the movable platform to move, the movable platform moves along the guide structure.

7. The horizontally disposed isolated spherical gap device for use in a high-DC superimposed impulse test of claim 6, wherein, The guide structure comprises two guide rod fixed seats fixed to the surface of the base, and a guide rod is arranged between the two guide rod fixed seats and penetrates the movable platform.

8. The horizontally disposed isolated spherical gap device for use in a high- adjustable direct current superimposed impulse test of claim 3, wherein, The support cylinder comprises a first lifting sleeve, a second lifting sleeve, a third lifting sleeve and a fourth lifting sleeve, the first lifting sleeve, the second lifting sleeve, the third lifting sleeve and the fourth lifting sleeve are all made of insulating material, the first lifting sleeve, the second lifting sleeve, the third lifting sleeve and the fourth lifting sleeve are sequentially sleeved, the first lifting sleeve is installed at the top of the flange seat, a lifting device is installed in the first lifting sleeve, an installation plate is arranged in the fourth lifting sleeve, and the lifting end of the lifting device is connected with the installation plate.

9. The horizontally disposed isolated spherical gap device for use in a high-DC superimposed impulse test of claim 8, wherein, The lifting device is an electric multi-section lifting rod or a multi-section lifting hydraulic rod, and the first lifting sleeve side wall is provided with a mounting hole corresponding to the lifting device wiring.

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