A pressure measuring device used for measuring pressure during an arcing fault test in a switch cabinet
A pressure measuring device and fault test technology, applied in the field of switchgear, can solve problems such as cost waste
Pending Publication Date: 2020-07-07
XIAMEN HUADIAN SWITCHGEAR
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Problems solved by technology
[0004] The purpose of the present invention is to provide a pressure measuring device for measuring the pressure during the internal arcing fault test of the switchgear, to provide data basis for manufacturers to design the strength of the switchgear products, and to solve the current problems of various manufacturers for passing the internal inspection. Arcing fault test, blindly strengthen the design, resulting in various over-design, resulting in a huge waste of cost
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[0018] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0019] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Orientation indicated by rear, left, right, vertical, horizontal, top, bottom, inside, outside, clockwise, counterclockwise, etc. The positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must hav...
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The invention relates to the technical field of switch cabinets, in particular to a pressure measuring device for measuring pressure in an arcing fault test in a switch cabinet, and a mounting hole isformed in a test compartment of the switch cabinet; the pressure measuring device for measuring the pressure during the arcing fault test in the switch cabinet comprises a piston cylinder, a piston assembly and a pressure measuring assembly; the piston cylinder is hermetically connected with the test compartment; an inner cavity of the piston cylinder is communicated with the interior of the testcompartment through the mounting hole; the piston assembly is arranged in the piston cylinder in a sliding mode, can move along the piston cylinder and is connected with the inner wall of the pistoncylinder in a sealed mode. The pressure measuring assembly is fixedly connected with the piston assembly so as to measure the pressure borne by the piston assembly; the pressure measuring assembly islocated on the outer side of the piston cylinder. According to the pressure measuring device, the maximum atmospheric pressure in an arcing fault test in the test compartment can be collected, data reference and basis are provided for a manufacturer to carry out product design, various over-designs are further effectively prevented, and cost waste is avoided.
Description
technical field [0001] The invention relates to the technical field of switch cabinets, in particular to a pressure measuring device for measuring pressure during an arcing fault test inside a switch cabinet. Background technique [0002] The internal arcing fault test is a test to verify the protection of personnel from hazardous electrical effects. When the metal-enclosed switch and control equipment is in the normal operating position and an internal arcing event occurs, it provides a tested level of protection for personnel near normal operating equipment. The impact and degree of damage caused by internal arcing faults are related to the size of the switchgear shell, arc voltage, arc duration, and short-circuit current. It is characterized by short time, but large energy and strong destructive power. When the strength of the switchgear is not strong enough to resist the destructive force of the internal arcing fault, the door and cover of the switchgear will be separate...
Claims
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Login to View More IPC IPC(8): G01L7/16
CPCG01L7/16
Inventor 李英联张兴朗郑闽生
Owner XIAMEN HUADIAN SWITCHGEAR