Device for testing withstand voltage of stress cone of GIS (Gas Insulated Switchgear) terminal

Abstract

The utility model discloses a GIS terminal stress cone withstand voltage test device, which is provided with a transversely arranged base, a transversely arranged withstand voltage test bin is arranged on one side of the base, a stress cone inlet is arranged at one end of the withstand voltage test bin, transversely arranged first hydraulic telescopic mechanisms are respectively arranged on the front side and the rear side of the withstand voltage test bin, and second hydraulic telescopic mechanisms are respectively arranged on the front side and the rear side of the withstand voltage test bin. The telescopic ends of the two sets of first hydraulic telescopic mechanisms are jointly connected with a bearing vertical plate, a cable penetrating sleeve is arranged on the outer side face of the bearing vertical plate, and a cable fixing jacket is arranged on the outer side end face of the cable penetrating sleeve. A second hydraulic telescopic mechanism is further arranged on the outer side face of the bearing vertical plate, and the telescopic end of the second hydraulic telescopic mechanism penetrates through the bearing vertical plate and is connected with an elastic telescopic sleeve piece used for containing a cable stress cone. The testing device is completely self-developed equipment, is stable and reliable to use, and can automatically realize accurate compression and alignment of the stress cone component.

Description

TECHNICAL FIELD

[0001] The utility model relates to cable test equipment technical field especially a kind of for GIS terminal stress cone withstand voltage testing device. BACKGROUND

[0002] According to the requirement of relevant national standard of power cable, cable accessory must be made electrical withstand voltage performance test when factory, especially for large high-voltage cable accessory, more is to carry out relevant test, including power frequency withstand voltage and partial discharge test, to ensure that electrical performance reaches standard requirement, and test needs to be applied to GIS terminal stress cone structure.The existing technology is when carrying out withstand voltage test to 110kVGIS terminal stress cone, one is the use, fastening of equipment is very inconvenient, two is the stability and sealing property of stress cone in the process of testing are difficult to guarantee, furthermore, the degree of automation for workpiece testing is not high, difficult to achieve the process of efficient and stable testing. CONTENT OF UTILITY MODEL

[0003] The utility model is just aimed at the above situation, provide a kind of for GIS terminal stress cone withstand voltage testing device, the testing device is a kind of equipment that is completely self-study, stable and reliable, can realize the accurate pressing alignment of stress cone component automatically.

[0004] The specific scheme of the utility model is: a kind of for GIS terminal stress cone withstand voltage testing device, with the bottom of horizontal arrangement, the bottom is located at one side and is provided with the withstand voltage test bin of horizontal arrangement, the one end of withstand voltage test bin is equipped with stress cone entrance, the front and back of withstand voltage test bin is respectively provided with the first hydraulic telescopic mechanism of horizontal arrangement, the telescopic end of two sets of first hydraulic telescopic mechanism is connected with a bearing vertical plate, bearing vertical plate is equipped with through hole in the middle, through hole is opposite with the stress cone entrance arrangement, the outside surface of bearing vertical plate is equipped with cable sleeve, the outside surface of cable sleeve is equipped with cable fixing sleeve;The outside surface of bearing vertical plate is also equipped with second hydraulic telescopic mechanism, the telescopic end of second hydraulic telescopic mechanism passes through bearing vertical plate and is connected with a set of elastic telescopic sleeve for the cable stress cone of being placed, the elastic telescopic sleeve is moved under the driving of second hydraulic telescopic mechanism and is docked with the stress cone entrance on withstand voltage test bin.

[0005] Further, the first hydraulic telescopic mechanism in the utility model includes two horizontal slides arranged in parallel on the bottom, the tail of each horizontal slide is respectively provided with a first telescopic cylinder, the two first telescopic cylinders are arranged on the front and back of the withstand voltage test bin and are arranged symmetrically, the telescopic rod of each first telescopic cylinder is fixed with a sliding block at the front part, the bottom of the sliding block is slidably connected with the corresponding horizontal slide, and the front end of the telescopic rod of the two first telescopic cylinders passes through the corresponding sliding block and is connected on the bearing vertical plate.

[0006] Further, the inner side wall of the stress cone inlet is provided with a conical surface, which corresponds to the stress cone surface on the GIS terminal.

[0007] Further, the second hydraulic telescopic mechanism is composed of two second telescopic oil cylinders, which are arranged in parallel and fixed on the outer side of the bearing vertical plate, and the telescopic rods of the two second telescopic oil cylinders pass through the bearing vertical plate and are connected with the elastic telescopic sleeve.

[0008] Further, the elastic telescopic sleeve comprises a first cable sleeve and a second cable sleeve, wherein the outer wall of the first cable sleeve is connected with the second hydraulic telescopic mechanism through an ear plate, a plurality of annularly distributed telescopic inserting rods are arranged between the first cable sleeve and the second cable sleeve, one end of each telescopic inserting rod is fixed on the end face of the first cable sleeve, the other end of each telescopic inserting rod is slidably inserted into the end face of the second cable sleeve, a pre-tightening spring is sleeved on each telescopic inserting rod, and the two ends of the pre-tightening spring are connected with the end faces of the first cable sleeve and the second cable sleeve respectively.

[0009] Further, the inner diameters of the first cable sleeve and the second cable sleeve are consistent, and the first cable sleeve and the second cable sleeve are coaxially arranged.

[0010] Further, the cable fixing clamp sleeve comprises an upper clamp sleeve and a lower clamp sleeve, wherein the lower clamp sleeve is fixed on the outer side end face of the cable penetrating sleeve, the upper clamp sleeve is combined with the lower clamp sleeve to form clamping of the cable, and the upper clamp sleeve and the lower clamp sleeve are locked through locking bolts.

[0011] Further, the pressure test bin has a pressure bin body, one end of the pressure bin body is sealed, the other end is provided with a stress cone inlet, a pressure monitoring instrument is arranged on the pressure bin body, and nitrogen or sulfur hexafluoride is introduced into the pressure bin body during use.

[0012] Further, the cable penetrating sleeve is in the shape of a box body, a transverse through hole is arranged in the middle of the cable penetrating sleeve, the transverse through hole is used for the cable to pass through, a through hole is arranged in the middle of the bearing vertical plate, and the lower end of the bearing vertical plate is provided in the shape of a narrow body.

[0013] Further, the base is composed of two split bases arranged side by side, and the distance between the two split bases is kept at 40-60 cm.

[0014] The pressure test device with the novel structure can more stably guarantee the pressure test of the GIS terminal stress cone of the high-voltage cable, the operation process is automatically carried out, and the device is efficient, fast, stable, good in effect for testing of the large-size high-voltage cable stress cone, and good in practical application and promotion value. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is the front view direction structure schematic diagram of the utility model;

[0016] Figure 2 is the plan direction structure schematic diagram of the utility model;

[0017] Figure 3 is Figure 1 the structure amplification schematic diagram of K in the middle;

[0018] Figure 4 is the bearing vertical plate structure schematic diagram in the utility model;

[0019] Figure 5 is the state schematic diagram of the utility model application operation.

[0020] In the drawing: 1-second telescopic oil cylinder, 2-locking bolt, 3-upper clamp cover, 4-cable sleeve, 5-lower clamp cover, 6-bearing vertical plate, 7-first cable sleeve, 8-second cable sleeve, 9-sliding block, 10-transverse sliding rail, 11-separate seat, 12-first telescopic oil cylinder, 13-stress cone inlet, 14-pressure-resistant warehouse body, 15-pressure monitoring instrument, 16-pre-tightening spring, 17-telescopic plug rod, 18-high-voltage cable, 19-stress cone. DETAILED DESCRIPTION

[0021] The technical scheme of the utility model will be described clearly and completely below in combination with the drawings of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without making creative efforts belong to the protection scope of the utility model. In the description of the utility model, it needs to be explained that the terms "upper", "lower", "inner", "outer" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, or the orientation or position relationship of the utility model product when it is usually placed, which is only for the convenience of describing the utility model or simplifying the description, and cannot be understood as indicating or implying that the indicated device or element must have a specific orientation, be constructed or operated in a specific orientation, and therefore cannot be understood as limiting the utility model.

[0022] In the description of the utility model, it also needs to be explained that, unless otherwise explicitly specified and limited, the terms "arrange", "install", "connect" should be understood broadly, for example, can be fixedly connected, or can be detachably connected, or integrally connected; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium, or can be the communication inside two elements. For the ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0023] Referring to Figures 1-4 The utility model relates to a kind of GIS terminal stress cone withstand voltage testing device, with transversely arranged base, further, the base in the utility model is by two split seats 11 and constitutes side by side, keep 40~60cm interval between two split seats, withstand voltage testing bin is arranged transversely on the base in one side, one end of withstand voltage testing bin is equipped with stress cone entrance 13, further, the withstand voltage testing bin in the utility model has pressure vessel body 14, one end of pressure vessel body is sealed, and the other end is equipped with stress cone entrance, pressure monitoring instrument is provided on pressure vessel body, nitrogen or sulfur hexafluoride is introduced in pressure vessel body when using, first hydraulic telescopic mechanism is arranged transversely in the front and back sides of withstand voltage testing bin, the telescopic end of two sets of first hydraulic telescopic mechanism is jointly connected with a load vertical plate 6, through hole is equipped in load vertical plate, through hole is arranged opposite with the stress cone entrance, cable sleeve 4 is equipped on the outer side of load vertical plate, cable fixing clamp sleeve is equipped on the outer side end face of cable sleeve, further, the cable fixing clamp sleeve in the embodiment includes upper clamp sleeve 3 and lower clamp sleeve 5, wherein lower clamp sleeve is fixed on the outer side end face of the cable sleeve, upper clamp sleeve and lower clamp sleeve are together to form the clamping of high-voltage cable 18, upper clamp sleeve and lower clamp sleeve are locked by locking bolt 2, when using, upper clamp sleeve is removed after cover, then lock operation is carried out;Second hydraulic telescopic mechanism is also equipped on the outer side of load vertical plate, the telescopic end of second hydraulic telescopic mechanism passes through load vertical plate and is connected with a set of elastic telescopic sleeve for installing cable stress cone, the elastic telescopic sleeve is moved under the drive of second hydraulic telescopic mechanism and is connected with stress cone entrance on withstand voltage testing bin.

[0024] Further, the first hydraulic telescopic mechanism in the embodiment includes two transverse slides 10 arranged in parallel on the base, and each tail of the two transverse slides is respectively provided with a first telescopic cylinder 12, the two first telescopic cylinders are arranged on the front and back sides of the withstand voltage testing bin and are symmetrically arranged, the telescopic rod of each first telescopic cylinder is fixed with a sliding block 9 at the front part, the bottom of the sliding block is slidingly connected with the corresponding transverse slide, and the front ends of the telescopic rods of the two first telescopic cylinders pass through the corresponding sliding blocks and are jointly connected with the load vertical plate. Further, the inner side wall of the stress cone entrance is provided as a conical surface, which corresponds to the conical surface of the stress cone on the GIS terminal. Further, the second hydraulic telescopic mechanism in the utility model is composed of two second telescopic cylinders 1, the two second telescopic cylinders are arranged in parallel and fixed on the outer side of the load vertical plate, and the telescopic rods of the two second telescopic cylinders pass through the load vertical plate and are jointly connected with the elastic telescopic sleeve.

[0025] Furthermore, in this embodiment, the elastic telescopic kit includes a first cable sleeve 7 and a second cable sleeve 8. The outer wall of the first cable sleeve is connected to the second hydraulic telescopic mechanism via an ear plate. A plurality of annularly distributed telescopic rods 17 are installed between the first and second cable sleeves. One end of each telescopic rod is fixed to the end face of the first cable sleeve, and the other end slides into the end face of the second cable sleeve. Each telescopic rod is fitted with a pre-tension spring 16, the two ends of which are respectively connected to the end faces of the first and second cable sleeves. Furthermore, in this invention, the inner diameters of the first and second cable sleeves are identical, and they are coaxially arranged.

[0026] Furthermore, in this utility model, the cable sleeve is box-shaped, with a transverse through hole in the middle for the cable to pass through; the supporting vertical plate has a through hole in the middle, and the lower end of the supporting vertical plate is designed as a narrow structure, see details below. Figure 4 As shown.

[0027] This utility model is a hardware device for withstand voltage testing of stress cones in high-voltage cables. When using it, it also needs to be used with computer equipment and related application software to transmit the relevant test data. The hardware device of this utility model is operated as follows.

[0028] See appendix Figure 5 As shown, the high-voltage cable is first fixed by cable sheathing. The stress cone at the front end extends forward from the second cable sheath. Then, the first telescopic cylinder is activated, moving the entire bearing vertical plate and the high-voltage cable on it, so that the stress cone is inserted into the stress cone inlet 13. Then, the second telescopic cylinder is activated, and its action pushes the second cable sheath against the end face of the stress cone inlet, further making the stress cone tightly adhere to the stress cone inlet. Then, the high-voltage cable and cable sheath are firmly fixed by cable fixing clamp. Finally, nitrogen or sulfur hexafluoride is introduced into the pressure-resistant chamber for insulation. Finally, high-voltage electricity is introduced into the high-voltage cable for breakdown testing, and the breakdown status inside is transmitted through relevant monitoring equipment for verification by operators.

[0029] This utility model is a hardware testing product. After the operator installs the cable product, they can perform remote automated operation to conduct pressure resistance tests on its stress cone components. It is safe, stable and reliable. This product is completely designed and manufactured by ourselves and is quick and convenient to use.

[0030] This invention designs a novel withstand voltage testing device that can more stably ensure the withstand voltage testing of stress cones at GIS terminals of high-voltage cables. The operation is automated, efficient, fast, and stable. It is particularly effective for testing stress cones in large-sized high-voltage cables and has significant practical application and promotion value.

Claims

1. A device for GIS terminal stress cone voltage withstanding test, having a transversely arranged base, characterized in that: The bottom is provided with a transversely arranged pressure-resistant test chamber on one side, one end of the pressure-resistant test chamber is provided with a stress cone inlet, the front and back of the pressure-resistant test chamber are respectively provided with a transversely arranged first hydraulic telescopic mechanism, the telescopic ends of the two sets of first hydraulic telescopic mechanisms are commonly connected with a bearing vertical plate, the bearing vertical plate is provided with a through hole in the middle, the through hole is arranged opposite to the stress cone inlet, the outer side of the bearing vertical plate is provided with a cable penetrating sleeve, the outer side of the cable penetrating sleeve is provided with a cable fixing clamp sleeve; the outer side of the bearing vertical plate is further provided with a second hydraulic telescopic mechanism, the telescopic end of the second hydraulic telescopic mechanism penetrates through the bearing vertical plate and is connected with a set of elastic telescopic sleeve for accommodating the cable stress cone, the elastic telescopic sleeve is moved under the driving of the second hydraulic telescopic mechanism and is butted with the stress cone inlet on the pressure-resistant test chamber.

2. The device for voltage withstanding test of GIS terminal stress cone according to claim 1, characterized in that: The first hydraulic telescopic mechanism comprises two transversely arranged horizontal sliding rails arranged on the top of the base, the tail of each horizontal sliding rail is respectively provided with a first telescopic oil cylinder, the two first telescopic oil cylinders are arranged on the front and back of the pressure-resistant test chamber and are symmetrically arranged, the telescopic rod of each first telescopic oil cylinder is fixed with a sliding block at the front part, the bottom of the sliding block is slidably connected with the corresponding horizontal sliding rail, and the front ends of the telescopic rods of the two first telescopic oil cylinders penetrate through the corresponding sliding blocks and are commonly connected with the bearing vertical plate.

3. The device for voltage withstanding test of GIS terminal stress cone according to claim 1, characterized in that: The inner side wall of the stress cone inlet is provided with a conical surface, which corresponds to the conical surface of the stress cone on the GIS terminal.

4. The device for voltage withstanding test of GIS terminal stress cone according to claim 1, characterized in that: The second hydraulic telescopic mechanism is composed of two second telescopic oil cylinders, the two second telescopic oil cylinders are arranged in parallel and fixed on the outer side of the bearing vertical plate, the telescopic rods of the two second telescopic oil cylinders penetrate through the bearing vertical plate and are commonly connected with the elastic telescopic sleeve.

5. The device for voltage withstanding test of GIS terminal stress cone according to claim 1, characterized in that: The elastic telescopic sleeve comprises a first cable sleeve and a second cable sleeve, the outer wall of the first cable sleeve is connected with the second hydraulic telescopic mechanism through an ear plate, a plurality of annularly distributed telescopic rods are arranged between the first cable sleeve and the second cable sleeve, one end of each telescopic rod is fixed on the end face of the first cable sleeve, the other end of each telescopic rod is slidably inserted into the end face of the second cable sleeve, a pre-tightening spring is sleeved on each telescopic rod, and the two ends of the pre-tightening spring are respectively connected with the end faces of the first cable sleeve and the second cable sleeve.

6. The device for voltage withstanding test of GIS terminal stress cone according to claim 5, characterized in that: The inner diameters of the first cable sleeve and the second cable sleeve are consistent and the two are coaxially arranged.

7. The device for voltage withstanding test of GIS terminal stress cone according to claim 1, characterized in that: The cable fixing clamp sleeve comprises an upper clamp sleeve and a lower clamp sleeve, the lower clamp sleeve is fixed on the outer side of the cable penetrating sleeve, the upper clamp sleeve is combined with the lower clamp sleeve to clamp the cable, and the upper clamp sleeve and the lower clamp sleeve are locked by locking bolts.

8. The device for voltage withstanding test of GIS terminal stress cone according to claim 1, characterized in that: The pressure-resistant test chamber has a pressure-resistant chamber body, one end of the pressure-resistant chamber body is sealed and the other end is provided with a stress cone inlet, the pressure-resistant chamber body is provided with a pressure monitoring instrument, and nitrogen or sulfur hexafluoride is introduced into the pressure-resistant chamber body during use.

9. The device for voltage withstanding test of GIS terminal stress cone according to claim 1, characterized in that: The cable penetrating sleeve is in the shape of a box body, a transversely penetrating hole is arranged in the middle of the cable penetrating sleeve, and the transversely penetrating hole is used for the cable to penetrate; a through hole is arranged in the middle of the bearing vertical plate, and the lower end of the bearing vertical plate is in the shape of a narrow body.

10. The device for voltage withstanding test of GIS terminal stress cone according to claim 1, characterized in that: The base is composed of two split bases arranged side by side, and the distance between the two split bases is kept at 40-60 cm.

Images