Fault arc limiting device and its triggering device for gas insulated switchgear
A technology of gas insulated switch and fault arc, which is applied in the setting of switchgear, switchgear, electrical components, etc., can solve the problems of high cost and long response time, and achieve the effect of high cost, long response time and low cost
Active Publication Date: 2017-01-11
XUJI GRP +3
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Problems solved by technology
[0004] The purpose of the present invention is to provide a gas-insulated switchgear fault arc limiting device to solve the problems of high cost and long response time of the existing fault arc limiting device
Method used
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Embodiment Construction
[0022] Embodiments of triggering devices for arc-fault limiting devices for gas-insulated switchgear, such as Figure 1-5 As shown, it includes a cylinder block 1, a cylinder head 7, a piston 6 and a gas connection valve 3.
[0023] One end of the cylinder body 1 is open and the other end is a closed structure. The piston 6 is assembled in the cylinder body, and a push rod is arranged on the side close to the open end of the cylinder body 1, so that the inner chamber of the cylinder body 1 is located near the top of the piston 6. The part on one side of the rod forms a rod cavity 1-1, and the part on the other side of the piston forms a rodless cavity 1-2. In this embodiment, the ejector rod adopts a stepped shaft structure and is integrated with the piston 6, which includes a large-diameter section near one end of the piston and a small-diameter section 6-4 at the other end. In this embodiment, the ejector rod One end of the large-diameter section close to the small-diameter...
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The invention relates to the high-pressure electrical field, in particular to a gas-insulated switch cabinet fault electric arc limit device and a trigger device thereof. The gas-insulated switch cabinet fault electric arc limit device comprises the trigger device; the trigger device comprises a cylinder and a piston which is assembled inside the cylinder; one end of the piston is provided with an ejection rod; a portion of an internal chamber of the cylinder, which is arranged on the piston side which is close to the ejection rod, forms into a rod chamber; a portion on the other side of the piston forms into a rod-free chamber; the rod-free chamber is connected with a gas connecting valve; the gas connecting valve and the cylinder are in seal fit; one end of the cylinder, which is close to the ejection rod, is provided with an anchoring force limit mechanism which is matched with the ejection rod in a limit mode to release limit of the ejection rod when the piston is under the preset sized pressure of the rod-free chamber. The gas-insulated switch cabinet fault electric arc limit device solves the problem that the existing fault electric arc limit device is high in cost and long in response time.
Description
technical field [0001] The invention relates to the high-voltage electrical field, in particular to a gas-insulated switchgear fault arc limiting device and a triggering device thereof. Background technique [0002] Gas-insulated switchgear has been more and more widely used in the high-voltage electrical field due to its advantages of small size, modularization and intelligence. In the process of operation, the gas insulated switchgear will inevitably produce fault arc due to faults and other reasons. Of course, when this situation occurs, it is necessary to quickly close the grounding switch to limit the continuous discharge of the fault arc of the switchgear and cause accidents. . The closing of the earthing switch is realized through the fault arc limiting device. [0003] The existing switchgear fault arc limiting device uses a pressure or temperature sensor to collect the signal that the temperature and pressure of the gas inside the switchgear rise instantaneously d...
Claims
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IPC IPC(8): H02B13/025H02B13/035
CPCH02B13/025H02B13/035
Inventor 吴小钊万仁刚师军伟曹志民郑晓果周行宋晓生
Owner XUJI GRP