Mid-cabinet directional explosion-proof pressure relief device
Technical field
The utility model relates to a kind of mid-cabinet directional explosion-proof pressure relief device.
Background technology
Present continuous development along with electric power network technique, mid-cabinet uses in a large number, this switch cubicle has more perfect anti mis-closedown function, be provided with independently explosion-proof relief plate, in order to play explosion-proof when the pressure release, the bursting diaphragm material is relatively thin cold-reduced sheet, if when above the switch cubicle maintenance work being arranged, there is potential safety hazard in the thin plate weight capacity.In addition, the bursting diaphragm direction can't be directed, can distortion can not continue to use behind the bursting diaphragm.
The utility model content
The utility model purpose is to provide a kind of mid-cabinet directional explosion-proof pressure relief device, and the device bursting diaphragm starts the direction orientation, can continue to use after pressure release is opened.
To achieve these goals, the utility model adopts following technical scheme: mid-cabinet directional explosion-proof pressure relief device, comprise trapezoidal cabinet and bursting diaphragm, and described casing is a right-angled trapezium, described bursting diaphragm is by on the hinged inclined-plane that is arranged on casing one side of pin.
Described bursting diaphragm is provided with trapezoidal louvre, and the louvre inwall is provided with Chain Link Fence, and described pin is provided with back-moving spring.
Described casing is provided with travel switch, and travel switch comprises that is touched a connecting rod, touches connecting rod and bursting diaphragm and is in transmission connection, and travel switch is connected with the exhaust equipment controller.
Advantage of the present utility model is as follows:
1, simple in structure, can use repeatedly;
2, explosion-protection equipment is a trapezoidal shape, and weight capacity is strong;
3, explosion-protection equipment starts the direction orientation, guarantees personal safety;
4, travel switch is installed in the bursting diaphragm place, can connect ventilating fan rapidly.
Description of drawings
Fig. 1 is a front view of the present utility model;
Fig. 2 is a left view of the present utility model.
Embodiment
Embodiment: mid-cabinet directional explosion-proof pressure relief device, comprise trapezoidal cabinet 1 and bursting diaphragm 2, casing 1 is a right-angled trapezium, bursting diaphragm 2 is by on the hinged inclined-plane that is arranged on casing 1 one sides of pin 3.Bursting diaphragm 2 is provided with trapezoidal louvre 5, and louvre 5 inwalls are provided with Chain Link Fence, and pin 3 is provided with back-moving spring 4.Casing 1 is provided with travel switch 6, and travel switch 6 comprises that is touched a connecting rod, touches connecting rod and bursting diaphragm 2 and is in transmission connection, and travel switch 6 is connected with the exhaust equipment controller.
As shown in Figure 1, the utility model comprises trapezoidal cabinet 1, bursting diaphragm 2 and travel switch 6, and bursting diaphragm 2 is connected by pin 3 with trapezoidal cabinet 1, and pin 3 is provided with back-moving spring 4.
As shown in Figure 2, bursting diaphragm 2 is provided with trapezoidal louvre 5, and the louvre inwall is provided with Chain Link Fence.Mid-cabinet directional explosion-proof pressure relief device is installed in the switch cubicle top, and casing 1 is connected with switch cubicle by bolt, and the heat of equipment distributes by louvre 5 usually.
When switch cubicle equipment is blasted, blast pressure is greater than back-moving spring 4 torsion, bursting diaphragm 2 pressure that is unlocked discharges, when bursting diaphragm 2 was started, travel switch 6 touched connecting rod and upsprings travel switch 6 junction closures simultaneously, connect the hyperbaric chamber ventilating fan, indoor smog is discharged rapidly, and control loop is provided with time-delay relay, and exhaust can continue for some time.Pressure discharges back bursting diaphragm 2 under the effect of back-moving spring 4 closes, and travel switch 6 shake-up connecting rods are pushed back simultaneously, can continue to use.