CN210626599U - Discharging trolley for direct-current high-voltage test - Google Patents

Abstract

The utility model discloses a direct current high voltage test is with dolly that discharges, it includes one end articulated together under bracing seat and last supporting seat, erects first supporting axle on the under bracing seat, erects on support second back shaft, rotatable setting that do be in first epaxial lower guide roller of supporting, rotatable setting are in on the second back shaft and with the last guide roller that lower guide roller corresponds, go up guide roller with the guide roller middle part is formed with the chamber of accomodating that supplies the track guide to pass down. The utility model discloses simple structure, ann tears the convenience open when experimental, and for realizing that automatic climbing provides the basis, has improved the on-the-spot security of direct current high voltage test.

Description

Discharging trolley for direct-current high-voltage test

[ technical field ] A method for producing a semiconductor device

The utility model belongs to the technical field of direct current high voltage test device, especially, relate to a direct current high voltage test is with dolly that discharges.

[ background of the invention ]

The existing direct-current high-voltage submarine cable has the advantages of low line cost, small loss, long transmission distance, high system stability and the like, is fully applied to high-capacity, long-distance and multi-endpoint power transmission projects, and is widely applied to renewable energy source grid connection, distributed power generation grid connection and island power supply.

In order to guarantee that the direct-current high-voltage test of the cable before operation also puts forward corresponding technical requirements, the direct-current cable for long-distance power transmission has large capacitance to ground (a few micro-methods to dozens of micro-methods), after the direct-current withstand voltage test is finished, higher requirements are put forward for the discharge test of the residual charge of the cable, and due to the fact that the residual charge is large and the residual voltage is high (500kV or more), an over-explosion phenomenon, various different potential safety hazards of secondary discharge and the like appear in the early discharge process.

When the submarine cable is subjected to a direct-current high-voltage test, a field test wiring diagram is shown in fig. 1, and the field direct-current high-voltage test device comprises a high-voltage output unit 1a, a current-limiting resistor 2a connected with the high-voltage output unit 1a, a test standard part 3a connected with the current-limiting resistor 2a, a tested submarine cable 4a connected with the test standard part 3a and a discharge resistor 5 a; when the voltage withstand test is carried out, the high-voltage output unit 1a carries out direct-current voltage withstand test on the tested submarine cable 4a through the current-limiting resistor 2a, the test standard component 3a is high-voltage of the tested submarine cable 4a to the ground, and after the voltage withstand test is finished, the discharging resistor 5a carries out residual charge discharging on the tested submarine cable 4a through a discharging trolley climbing mode.

Because the high-voltage test is very dangerous, a discharging trolley is needed to be designed to conveniently and automatically climb to complete the discharging of the residual charges of the tested object.

[ Utility model ] content

An object of the utility model is to provide a direct current high voltage test is with dolly that discharges, ann tears the convenience open when experimental, and for realizing climbing automatically and providing the basis, has improved the on-the-spot security of direct current high voltage test.

The utility model discloses a following technical scheme realizes above-mentioned purpose: the utility model provides a direct current high voltage test is with dolly that discharges, its includes that one end articulates together bottom suspension seat and last supporting seat, erects first supporting axle on the bottom suspension seat, erects second supporting axle, rotatable setting that last support was done are in epaxial lower guide roller, the rotatable setting of first supporting are in on the second supporting axle and with the last guide roller that lower guide roller corresponds, go up guide roller with guide roller middle part is formed with the chamber of accomodating that supplies the track guide to pass down.

Furthermore, the lower supporting seat and the upper supporting seat are connected with a hinged connecting piece at the same side.

Further, the hinge connecting piece is a stainless steel hinge.

Furthermore, hinge joint spare round pin axle perforation structure.

Furthermore, the opposite side of lower carriage is rotatable to be provided with a couple board, it is provided with the confession to go up the same one side of supporting seat the bakelite that the couple board was hung revolves the hand to screw up the realization through the rotation of bakelite revolves the hand the fixing of couple board.

Furthermore, an installation seat is arranged at one end of the upper surface of the upper support seat, and a discharge tip is installed on the installation seat.

Furthermore, the first supporting shaft and the second supporting shaft are provided with two supporting shafts, and the lower guide roller on the first supporting shaft and the upper guide roller on the second supporting shaft are respectively provided with a pair.

Compared with the prior art, the utility model relates to a direct current high voltage test lies in with dolly that discharges's beneficial effect: the device has a simple structure, is convenient to mount and dismount during testing, provides a foundation for realizing automatic climbing, and improves the safety of a direct-current high-voltage test site.

[ description of the drawings ]

FIG. 1 is a schematic diagram of a field DC high voltage test wiring structure;

fig. 2 is a schematic structural view of the lower support seat and the upper support seat when they are folded according to the embodiment of the present invention;

fig. 3 is a schematic structural view of the lower support seat and the upper support seat according to the embodiment of the present invention when they are opened;

the figures in the drawings represent:

the discharge trolley is used for a 100-DC high-voltage test; 101 a rail guide;

1, a lower supporting seat; 2, an upper supporting seat; 3a first support shaft; 4a second support shaft; 5, lower guide rollers; 6, guiding rollers; 7 a receiving cavity; 8, a hinged connecting piece; 9, a hook plate; 10 rotating the hands with bakelite; 11 a mounting seat; 12 discharge the tip.

[ detailed description ] embodiments

Example (b):

referring to fig. 2 to 3, the discharge cart 100 for the dc high voltage test in this embodiment includes a lower support base 1 and an upper support base 2, a first support shaft 3 erected on the lower support base 1, a second support shaft 4 erected on the upper support base 2, a lower guide roller 5 rotatably disposed on the first support shaft 3, an upper guide roller 6 rotatably disposed on the second support shaft 4 and corresponding to the lower guide roller 5, and a storage cavity 7 for the rail guide 101 to pass through is formed in the middle of the upper guide roller 6 and the lower guide roller 5.

The lower supporting seat 1 and the upper supporting seat 2 are connected with a hinged connecting piece 8 at the same side, and the hinged connecting piece 8 can be a stainless steel hinge or a pin shaft perforation structure to realize the hinging of the lower supporting seat 1 and the upper supporting seat 2. The other side of the lower supporting seat 1 is rotatably provided with a hook plate 9, and the same side of the upper supporting seat 2 is provided with a bakelite handle 10 for the hook plate 9 to be hooked.

One end of the upper surface of the upper supporting seat 2 is provided with a mounting seat 11, and a discharge tip 12 is mounted on the mounting seat 11.

In this embodiment, the first support shaft 3 and the second support shaft 4 are both provided with two, and the lower guide roller 5 on the first support shaft 3 and the upper guide roller 6 on the second support shaft 4 are respectively provided with a pair, so that the overall stability and the balance during the climbing of the discharging trolley are guaranteed.

During testing, the lower supporting seat 1 and the upper supporting seat 2 are opened, then the discharging trolley is clamped on the track guide part 101, and the track guide part 101 penetrates through the accommodating cavity 7; then the lower supporting seat 1 and the upper supporting seat 2 are folded and hung on a bakelite rotating hand 10 through a hook plate 9 to be locked and fixed; so that the discharge car can slide on the rail guide 101.

When the device is used, the end part of the discharging trolley can be fixed on a traction rope, automatic climbing of the discharging trolley is achieved through the traction effect of the traction rope, and then the discharging point on the discharging trolley touches a test standard component to achieve residual charge discharging.

Tetrafluoroethylene gaskets can be sleeved on the first supporting shaft 3 and the second supporting shaft 4, then the guiding roller is sleeved, and then the tetrafluoroethylene gaskets are sleeved, so that the friction force on two sides of the guiding roller can be reduced, and the sliding fit state of the guiding roller hole and the supporting shaft is achieved; then the two ends of the supporting shaft penetrate through hole positions of side plates on the two sides of the supporting seat, and the end part of the supporting shaft is fixed by a positioning pin through a threaded hole of the side plate to achieve a state of fixing the supporting shaft; then, the upper and lower laminate plates of the supporting seat are arranged on the side plates and fixed by hexagon socket screws; then the upper and lower left side plates are fixed by stainless steel hinges 8, and the upper plate and the lower plate can be opened by a certain angle; the lower right side plate is provided with the hook plate 9, the lower end of the hook plate 9 is fixed by a screw, and a point gap is reserved between the screw and the hook plate 9, so that the hook plate 9 can rotate; the upper right side plate is locked by a bakelite handle 10 to complete the assembly of the main body of the discharge trolley 100.

The discharging trolley 100 for the direct-current high-voltage test has a simple structure, is convenient to mount and dismount during the test, provides a foundation for realizing automatic climbing, and improves the safety of the direct-current high-voltage test site.

What has been described above are only some embodiments of the invention. For those skilled in the art, without departing from the inventive concept, several modifications and improvements can be made, which are within the scope of the invention.

Claims (7)

1. The utility model provides a direct current high voltage test is with dolly that discharges which characterized in that: it includes articulated lower carriage and the last supporting seat that is in the same place of one end, erects first supporting shaft on the lower carriage, erects second back shaft, rotatable setting that go up to support and do are in epaxial lower guide roller, the rotatable setting of first supporting are in on the second back shaft and with the last guide roller that lower guide roller corresponds, go up guide roller with the guide roller middle part is formed with the chamber of accomodating that supplies the track guide to pass down.

2. The discharge trolley for the direct current high voltage test as claimed in claim 1, wherein: the lower supporting seat and the upper supporting seat are connected with a hinged connecting piece at the same side.

3. The discharge trolley for the direct current high voltage test as claimed in claim 2, wherein: the hinged connecting piece is a stainless steel hinge.

4. The discharge trolley for the direct current high voltage test as claimed in claim 2, wherein: the hinge connecting piece pin shaft is of a perforated structure.

5. The discharge trolley for the direct current high voltage test as claimed in claim 1, wherein: the opposite side of lower carriage is rotatable to be provided with a couple board, go up the supporting seat be provided with the confession with one side the bakelite that the couple board was hung revolves the hand to screw up the realization through the rotation of bakelite revolves the fixing of couple board.

6. The discharge trolley for the direct current high voltage test as claimed in claim 1, wherein: the upper support seat is characterized in that one end of the upper surface of the upper support seat is provided with a mounting seat, and a discharging tip is mounted on the mounting seat.

7. The discharge trolley for the direct current high voltage test as claimed in claim 1, wherein: the first supporting shaft and the second supporting shaft are provided with two supporting shafts, and the lower guide rollers on the first supporting shaft and the upper guide rollers on the second supporting shaft are respectively provided with a pair.

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