CN206099327U - Lightning protection device of power - Google Patents

Abstract

The utility model relates to a power protection technology field, especially a lightning protection device of power. It is concrete including mechanical housing and PCBA assembly printed circuit, the PCBA assembly printed circuit board install on mechanical housing, PCBA assembly printed circuit board includes PCB board and the circuit of printing on the PCB board, the circuit of printing on the PCB board is including inputing supply socket, wire, piezo -resistor, putting magnetron, earth connection, common mode inductance and output supply socket, input supply socket, piezo -resistor and put magnetron and connect gradually through the wire, it connects the earth connection to put magnetron, input supply socket connects gradually common mode inductance and output supply socket through the wire, protective apparatus's effect is played to thunder and lightning and surge release effectively to the realization.

Description

A kind of lightning protection device of power supply

Technical field

The utility model is related to power protection field, particularly a kind of lightning protection device of power supply.

Background technology

With the fast development of electronic product, electronic product has been applied to every field.Many fields have occurred very Many high-tech instruments, these high-tech instruments are different from general industry electromechanics product safety and require standard, and cost is high.Example Such as, when donating blood, certain or certain several specific blood constituents, such as blood plasma, blood platelet, red blood cell etc. are often only needed to.Mesh Front blood collection industry widely uses the related Medical Devices of blood, and such as blood plasma machine harvester, blood component separator, blood is thin Born of the same parents' seperator etc..Meanwhile, need the composition to producing to wash, such as red blood cell processing instrument.Once generation broken by lightning electronics Equipment, will cause very big impact.Accordingly, it would be desirable to be effectively protected to the power supply of electronic equipment, it is to avoid thunderbolt is outer The situation electron equipment of boundary's forceful electric power surge causes to damage.

Utility model content

Goal of the invention of the present utility model is：For above-mentioned problem, there is provided a kind of lightning protection device of power supply.

The technical solution adopted in the utility model is such：A kind of lightning protection device of power supply, specifically includes mechanical cover Printed circuit is assembled with PCBA, the PCBA assemblings printed circuit board (PCB) is arranged on mechanical cover, the PCBA assemblings printing electricity Road plate includes pcb board and prints the circuit on pcb board, and the circuit being printed on pcb board includes input power socket, leads Line, piezo-resistance, discharge tube, ground wire, common mode inductance and out-put supply socket, the input power socket, piezo-resistance and Discharge tube is sequentially connected by wire, and the discharge tube connects ground wire, and the input power socket is sequentially connected by wire Common mode inductance, safety electric capacity and out-put supply socket, the safety capacitance connection ground wire.

Further, the safety electric capacity encourages CARLI 33K275V-X2 types using triumphant.

Further, the PCBA assemblings printed circuit board surface includes Copper Foil, and the Copper Foil width is more than 2mm.

Further, the thickness of the synthetic resin layer of the pcb board is 1.6mm.

Further, the input power socket adopts connector CH29-3.96-5TZD II.

Further, the piezo-resistance adopts 14D471K types.

Further, the discharge tube adopts Burns Bourns2026 serial discharge pipes.

Further, the common mode inductance adopts common CV930160 types.

In sum, as a result of above-mentioned technical proposal, the beneficial effects of the utility model are：Piezo-resistance and put Fulgurite is that whole device effectively discharges to thunder and lightning and surge, while the safety electric capacity for arranging can carry out dual guarantor to high voltage Shield；And specifically with the function of restoring circuit after the device release；Its simple structure, it is economic and practical, can effectively act as protecting The effect of shield equipment.

Description of the drawings

Fig. 1 is the lightning protection device of the utility model power supply.

Reference：Input power socket -1, wire -2, discharge tube -3, common mode inductance -4, wire -5, safety electric capacity -6, Wire -7, out-put supply socket -8, pcb board -9, ground wire -10, ground wire -11, wire -12, piezo-resistance -13, wire - 14, mechanical cover -15.

Specific embodiment

Below in conjunction with the accompanying drawings, the utility model is described in detail.

In order that the purpose of this utility model, technical scheme and advantage become more apparent, below in conjunction with accompanying drawing and enforcement Example, is further elaborated to the utility model.It should be appreciated that specific embodiment described herein is only to explain The utility model, is not used to limit the utility model.

As shown in figure 1, a kind of lightning protection device of power supply, specifically includes mechanical cover 15 and PCBA assembling printed circuits, institute State PCBA assembling printed circuit board (PCB)s to be arranged on mechanical 15 shell, the PCBA assemblings printed circuit board (PCB) includes pcb board 9 and prints Circuit on pcb board 9, the circuit being printed on pcb board 9 includes input power socket 1, wire, piezo-resistance 13, puts Fulgurite 3, ground wire, common mode inductance 4 and out-put supply socket 8, the input power socket 8, piezo-resistance 13 and discharge tube logical 3 Cross wire to be sequentially connected, the discharge tube connects ground wire 11, the input power socket 8 is sequentially connected common mode electricity by wire Sense 4, safety electric capacity 6 and out-put supply socket 8, the safety electric capacity 6 connects ground wire 10.Foregoing circuit process and assemble is in PCB On plate 9, cover a upper mechanical cover 15 and protected, realize protecting the effect of Medical Devices with this.The mechanical cover 15 is adopted With antirust aluminium LF6, true qualities oxidation, Surface Machining grid, thermal diffusivity is good, equally plays effective protective action.

The safety electric capacity 6 encourages CARLI 33K275V-X2 types, rated voltage～275V, rated capacitance using triumphant 0.47uF.One effect of safety electric capacity 6 is to filter out noise current, and another important function is in piezo-resistance 13 or discharge tube High-strength impact electric current of the release higher than～260V in the case of 3 failures, and be discharged into heavy current is impacted by ground wire 10 Device external.The electric current for ensureing stable～220V operating voltages is input to out-put supply socket 8 by wire 7, then is input into and sets The parts such as standby internal transformer.

The input power socket 1 adopts connector CH29-3.96-5TZD II.The socket connector plug is tangent bend Elastic Contact reed, 5 core sockets access the wire after power switch, it is ensured that the live wire of network source importation～220V connects the 1st Pin, zero line connect the 3rd pin, ground wire and connect the 5th pin, and the 2nd pin and the 4th pin are vacant, it is ensured that enough electric clearances.

The surface of the PCBA assemblings printed circuit board (PCB) includes Copper Foil, and the Copper Foil width is more than 2mm；Ensure enough Voltage endurance capability.The synthetic resin layer thickness of the pcb board is 1.6mm, and synthetic resin layer is added with two-sided copper foil plate by printed board Work technique is laminated into type to be made.

The piezo-resistance 13 adopts 14D471K types.Piezo-resistance 13 is using the semi-conducting material oxygen sensitive to high-low pressure Change zinc (ZnO) to make, the resistance device with nonlinear wind vibration, power is 0.4W.Electricity is carried out when circuit bears overvoltage Pressing tongs position, absorbs unnecessary electric current to protect Sensitive Apparatus 13；Its discharge response speed 8A/20 μ S, are faster than gas discharge.

The discharge tube 3 adopts Burns Bourns2026 serial discharge pipes；DC break down voltage is up to DC260V, impulse flashover V/us levels 475V of voltage 100, impulse flashover voltage 1000V/us levels 700V impact horizontal time delay 75ns；Impact release current model Enclose for 1000～40000A, the abrupt release time is 1/100～2/5us.

The common mode inductance 4 adopts common CV930160 types, using the brass wire of 0.8mm as the main former material for winding Material, inductance value scope 15～28mH MIN.

Operation principle of the present utility model is;When the height higher than～470V occur in Lightning strike or input network source surge During strength impact electric current access arrangement, through input power socket 1 and wire 14 and to piezo-resistance 13 this punching can be sensed Electric current is hit, discharge tube 3 is turned under the impact of high voltage heavy current, instantaneously by ground wire 11 impact heavy current is discharged into and is set It is standby outside.Prevent from impacting heavy current by inside the access arrangement of wire 2.After releasing impact heavy current, piezo-resistance 13 senses Less than the high-strength impact electric current higher than～470V, automatic shutoff circuit, now discharge tube 3 be in obstructed electricity condition, keep good Good discharge performance.By wire 2～operating voltage of 220V equally can be affected by high-strength impact electric current, can be adjoint Irregular noise current is to machine delivered inside.By the anti-interference process of common mode inductance 4, such as piezo-resistance 13 or discharge tube In the case of 3 failures, while can realize that high-tension second protects through safety electric capacity 6 again.

Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model Any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in the utility model Protection domain within.

Claims (8)

1. a kind of lightning protection device of power supply, it is characterised in that：Including mechanical cover and PCBA assembling printed circuits, the PCBA dresses It is arranged on mechanical cover with printed circuit board (PCB), the PCBA assemblings printed circuit board (PCB) includes pcb board and prints the electricity on pcb board Road, the circuit being printed on pcb board includes input power socket, wire, piezo-resistance, discharge tube, ground wire, common mode electricity Sense and out-put supply socket, the input power socket, piezo-resistance and discharge tube are sequentially connected by wire, the discharge tube Connection ground wire, the input power socket is sequentially connected common mode inductance, safety electric capacity and out-put supply socket, institute by wire State safety capacitance connection ground wire.

2. the lightning protection device of power supply as claimed in claim 1, it is characterised in that：The safety electric capacity encourages CARLI using triumphant 33K275V-X2 types.

3. the lightning protection device of power supply as claimed in claim 1, it is characterised in that：The PCBA assembles printed circuit board surface bag Copper Foil is included, the Copper Foil width is more than 2mm.

4. the lightning protection device of power supply as claimed in claim 1, it is characterised in that：The thickness of the synthetic resin layer of the pcb board For 1.6mm.

5. the lightning protection device of power supply as claimed in claim 1, it is characterised in that：The input power socket adopts connector CH29-3.96-5TZD II.

6. the lightning protection device of power supply as claimed in claim 1, it is characterised in that：The piezo-resistance adopts 14D471K types.

7. the lightning protection device of power supply as claimed in claim 1, it is characterised in that：The discharge tube adopts Burns Bourns2026 serial discharge pipes.

8. the lightning protection device of power supply as claimed in claim 1, it is characterised in that：The common mode inductance adopts common CV930160 Type.