CN209088535U

CN209088535U - A kind of photovoltaic lightning protection Surge Protector

Info

Publication number: CN209088535U
Application number: CN201821469531.5U
Authority: CN
Inventors: 史亚忠; 姚志国
Original assignee: NANJING PUTIAN HONGYAN ELECTRICAL APPLIANCE TECHNOLOGY Co Ltd
Current assignee: NANJING PUTIAN HONGYAN ELECTRICAL APPLIANCE TECHNOLOGY Co Ltd
Priority date: 2018-09-10
Filing date: 2018-09-10
Publication date: 2019-07-09
Anticipated expiration: 2028-09-10

Abstract

The utility model discloses a kind of photovoltaic lightning protection Surge Protectors, belong to technical field of electric power, connecting terminal P1 is alerted including three protection locations and remote signalling, protection location includes overcurrent protection module (15) and switch module (16), overcurrent protection module (15) includes the rotating mechanism of overcurrent protection seat (1) and setting on overcurrent protection seat (1), switch module (16) includes the microswitch (13) of switch base (17) and setting on switch base (17), it further include varistor, microswitch and rake, it solves and high current and overvoltage is released and absorbed well, guarantee the technical issues of photovoltaic generating system and back electrical equipment work normally；The utility model can not only prevent damage of the inductive lightning electric current to protected object, and simple, convenient for configuration and bulk production.

Description

A kind of photovoltaic lightning protection Surge Protector

Technical field

The utility model belongs to technical field of electric power more particularly to a kind of photovoltaic lightning protection Surge Protector.

Background technique

In the prior art, the side that varistor and discharge tube carry out common mode to power supply and differential mode is protected jointly is generallyd use Formula protects the normal work of power supply system.In thundery sky or unstable power supply system, it may appear that high current intrusion or voltage are big The dynamic phenomenon of amplitude wave, to there is certain probability damage electrical appliance.Therefore, how photovoltaic generating system at work, prevent from feeling Lightning current or overvoltage and voltage big ups and downs are answered, protecting the normal work of photovoltaic generating system is that this field is urgently to be solved One technical problem.

Utility model content

The purpose of the utility model is to provide a kind of photovoltaic lightning protection Surge Protectors, solve by high current and excessively electric Pressure is released and is absorbed well, guarantees the technical issues of photovoltaic generating system and back electrical equipment work normally.

To achieve the above objectives, the present invention adopts the following technical solutions:

A kind of photovoltaic lightning protection Surge Protector, including three protection locations and remote signalling alert connecting terminal P1, protection Unit includes overcurrent protection module and switch module, and overcurrent protection module includes overcurrent protection seat, is installed in overcurrent protection seat Contact pin and the rotating mechanism being arranged on overcurrent protection seat, switch module include that switch base and the fine motion being arranged on switch base are opened It closes, the rotating mechanism includes by pin shaft and the hinged substrate of overcurrent protection seat, spring and fusible link, and substrate connects equipped with spring Socket part, the first protrusion and the second protrusion, fusible link one end are that the fixing end being fixed on overcurrent protection seat, the other end pass through Soldering tin block is fixedly connected with contact pin, and spring coupling part, the other end of spring one end connecting substrate connect the fixing end of fusible link, work as base When first protrusion of plate is against fusible link side, the microswitch of the second protrusion push switch module of substrate；

Setting the microswitch in three protection locations is respectively microswitch S1, microswitch S2 and microswitch S3, Rake in three protection locations is respectively rake K1, rake K2 and rake K3, is also distinguished in three protection locations Equipped with varistor Rn1, varistor Rn2 and varistor Rn3；

Rake K1 and varistor Rn1 the first protection circuit in series, rake K2 connect structure with varistor Rn2 At the second protection circuit, rake K3 and varistor Rn3 third in series protect circuit, and the first protection circuit and second protect It connects again with third protection circuit after protection circuit is in parallel；

The anode of rake K1 connection DC power-supply system in first protection circuit, second protects the rake in circuit The cathode of K2 connection DC power-supply system, third protect the varistor Rn2 ground connection in circuit；

1 foot of 1 foot of microswitch S1,1 foot of microswitch S2 and microswitch S3 alerts connecting terminal with remote signalling 1 foot of P1 connects, and 2 feet of 2 feet of microswitch S1,2 feet of microswitch S2 and microswitch S3 alert wiring with remote signalling 2 feet of terminals P 1 connect, and 3 feet of 3 feet of microswitch S1,3 feet of microswitch S2 and microswitch S3 are alerted with remote signalling 3 feet of connecting terminal P1 connect.

Preferably, the second protrusion is rotated around pin shaft and is separated with microswitch.

Preferably, overcurrent protection seat is detachably connected with switch base, and two cuttings, the end of cutting are installed on overcurrent protection seat Portion is equipped with the hook part being located at outside overcurrent protection seat, and two slots are arranged in the hook part of corresponding two cuttings on switch base, two cuttings Hook part is inserted into respectively in two slots.

The contact pin is one of metal electrode pin of varistor.

Preferably, one end of the rake K1 in the first protection circuit is positive input terminal, other end connection varistor Rn1 One end, varistor Rn1 the other end connection third protection circuit in rake K3 one end, the other end of rake K3 with One end of varistor Rn3 connects, and the other end of varistor Rn3 is ground terminal, the rake K2's in the second protection circuit One end is one end of negative input end, other end connection varistor Rn2, the other end connection third protection electricity of varistor Rn2 One end connection of rake K3, the other end of rake K3 are connect with one end of varistor Rn3 in road；The positive input terminal connects Connect the anode of DC power-supply system, the cathode of the negative input end connection DC power-supply system, the ground terminal ground connection.

A kind of photovoltaic lightning protection Surge Protector described in the utility model, solves high current and overvoltage is fine Release and absorb, guarantee the technical issues of photovoltaic generating system and back electrical equipment work normally；The utility model is not only Damage of the inductive lightning electric current to protected object can be prevented, and overall structure is simple, convenient for configuration and bulk production；This reality The quick Y type composite structure of total pressure is used with novel, there is differential mode protection to protect two kinds of protected modes with common mode, to realize to power supply The full guard of system；While ensure that product electric property, shortens product and release the big through-flow response time, and significantly Reduce the cost of product；But not the service life for shortening product, will not influence the normal work of power supply system.Each module It is equipped with module status indication window, readily identified judgement, but also there is long-range remote signalling to alert miscellaneous function.

Detailed description of the invention

Fig. 1 is the circuit diagram of the utility model；

Fig. 2 is the structural schematic diagram of overcurrent protection module under normal condition；

Fig. 3 is structural schematic diagram when the second protrusion of substrate pushes down microswitch；

Fig. 4 is structural schematic diagram when the second protrusion of substrate separates with microswitch, no longer pushes down microswitch；

Fig. 5 is the structural schematic diagram that contact pin connects fusible link by soldering tin block；

In figure: overcurrent protection seat 1, cutting 3, hook part 4, the second protrusion 5, pin shaft 6, the first protrusion 7, inclines at substrate 2 Inclined portion 8, fixed part 9, fusible link 10, spring eye 11, spring 12, microswitch 13, spring coupling part 14, overcurrent protection module 15, switch module 16, switch base 17, slot 18, soldering tin block 19, contact pin 20, varistor 21.

Specific embodiment

By a kind of Fig. 1-photovoltaic lightning protection Surge Protector shown in fig. 5, including three protection locations and remote signalling alarm Connecting terminal P1, protection location include overcurrent protection module 15 and switch module 16, and overcurrent protection module 15 includes overcurrent protection Seat 1, the rotating mechanism for being installed in the contact pin of overcurrent protection seat 1 and being arranged on overcurrent protection seat 1, switch module 16 include switch Seat 17 and the microswitch 13 being arranged on switch base 17；

Rotating mechanism is set to the front side of overcurrent protection seat, and the rotating mechanism includes being cut with scissors by pin shaft 6 and overcurrent protection seat 1 Substrate 2, spring 12 and the fusible link 10 connect, substrate 2 are equipped with spring coupling part 14, the first protrusion 7 and the second protrusion 5, pin The extending direction of axis 6 is anterior-posterior horizontal extension, and substrate 2 and overcurrent protection seat 1 are vertically arranged, and the lower part of substrate 2 passes through pin The articulated connection of axis 6 is successively inserted through substrate 2 and overcurrent protection seat 1 in 1 front side of overcurrent protection seat, pin shaft 6, and overcurrent protection seat 1 is solid Fixed motionless, substrate 2 can be swung clockwise or counter-clockwise around pin shaft 6, the spring coupling part 14, the first protrusion 7 and the Along setting is successively spaced around pin shaft 6 clockwise, spring coupling part 14 is located at the top of substrate 2 and is located at pin shaft 6 two protrusions 5 Top, spring coupling part 14 be equipped with circular spring eye 11, the first protrusion 7 is between spring coupling part 14 and pin shaft 6 Right edge, the second protrusion 5 be located at the downside of pin shaft 6 and be set to substrate 2 bottom end；Fusible link 10 is that entirety is pressed from both sides in obtuse angle The bar shape of angle bending-like, by vertical fixed part 9 and from left to right, inclined rake 8 is constituted fusible link 10 obliquely, Gu Determine 9 bottom end of portion to be connected with 8 top of rake, fixed part 9 is an integral structure with rake 8, and the fixed part 9 of fusible link 10 is fixed On overcurrent protection seat 1, on the fixedly embedded overcurrent protection seat 1 of fixed part 9 of fusible link 10,10 top of fusible link is to be fixed on Fixing end, bottom end on stream protecting seat are fixedly connected with contact pin 20 by soldering tin block 19, and the contact pin 20 is the one of varistor 21 A metal electrode pin, specifically, varistor 21 are set to the rear side of overcurrent protection seat 1, and the corresponding contact pin 20 of overcurrent protection seat 1 is set Through-hole is set, the through-hole on the metal electrode pin insertion overcurrent protection seat 1 of varistor 21, the top of fixed part 9 is The fixing end of fusible link, 8 bottom end of rake are fixedly connected with contact pin, 10 bottom end of fusible link (i.e. 8 bottom end of rake) by soldering tin block The soldering tin block is formed when welding contact pin；The laterally setting of spring 12 or so, the spring connection of 12 one end connecting substrate 2 of spring Portion 14, other end connection fusible link 10 fixing end, in the present embodiment, the fixing end (i.e. the top of fixed part 9) of fusible link 10 Spring eye 11 is set, and the crotch of 12 left end of spring is hooked on the spring eye 11 of 2 spring coupling part 14 of substrate, right end crotch hooks On the spring eye 11 of 10 fixed part 9 of fusible link, in this way, the spring coupling part 14 of 12 left end connecting substrate 2 of spring, right end connect The fixing end of fusible link 10.

Overcurrent protection seat 1 is detachably connected with switch base 17, and left and right compartment of terrain is installed with two cuttings 3 on overcurrent protection seat 1, In the fixedly embedded overcurrent protection seat 1 in the top of cutting 3, the bottom end of cutting 3 is extended downwardly outside overcurrent protection seat 1, the bottom end of cutting 3 It is bent upwards and is formed crotch, i.e. the bottom end of cutting 3 is equipped with the hook part 4 being located at outside overcurrent protection seat 1, right on switch base 17 Answer the hook part 4 of two cuttings 3 that two slots 18 are set, two hook parts 4 of two cuttings 3 are inserted into respectively in two slots 18, and hook part 4 is inserted Enter after associated socket 18 by the extruding of 18 side wall of slot and left and right width narrows.

Under normal condition, the first protrusion 7 of substrate 2 is against the side of fusible link 10, when the first protrusion 7 of substrate 2 When being against the side of rake 8 of fusible link 10, the microswitch 13 of the second protrusion push switch module 16 of substrate 2, tool In the present embodiment, the first protrusion 7 of substrate 2 protrudes body to the right, and the second protrusion 5 is downwardly projecting, under normal condition, First protrusion 7 of substrate 2 is against the side of the rake 8 of fusible link 10, at this point, 5 push switch of the second protrusion of substrate 2 The microswitch 13 of module 16, and spring 12 is the tensional state of left and right horizontal, and the spring coupling part 14 of substrate 2 is by spring 12 12 pulling force of spring to the right, therefore, spring coupling part 14 have the tendency that rotating clockwise to the right around pin shaft 6, Entire substrate 2 has the tendency that rotating clockwise around pin shaft 6, the second protrusion 5 have one around pin shaft to rotating on 6 Trend, but due to the both ends of fusible link 10 at this time be it is fixed, entire fusible link 10 is fixed, rake 8 is also fixed, and rake 8 keeps off the side in the first protrusion 7 of substrate 2, turn for stopping substrate 2 to generate by spring 12 Dynamic, substrate 2 is stationary, at this point, the second protrusion 5 of substrate 2 is located at the bottom end of substrate 2, the second protrusion 5 of substrate 2 is pressed Push down the microswitch 13 on the downside of it；When varistor ageing failure, resistance value is gradually reduced, and leakage current gradually increases module over the ground Greatly, that is, it flows through 10 electric current of fusible link to become larger, 10 overcurrent and heat of fusible link, contact pin and soldering tin block make because of the excessive fracture separation of electric current Although the no longer connecting contact pin of fusible link 10, i.e. 8 bottom end of rake are also connected with soldering tin block, but since soldering tin block is separated with contact pin, So that rake 8 is separated with contact pin, fusible link 10 is separated with contact pin, and the bottom end (i.e. the bottom end of rake) of fusible link becomes freely End, rake 8 cannot keep off the side in 2 first protrusion 7 of substrate again, and spring 12 pulls to the right spring coupling part 14, substrate 2 because Pulling force by spring 12 is rotated clockwise around pin shaft 6, and the second protrusion 5 is rotated up around pin shaft 6 and and microswitch 13 separation, microswitch 13 no longer presses microswitch 13, i.e., when fusible link 10 is separated with contact pin, contact pin and soldering tin block point From substrate is rotated around pin shaft 6, and the second protrusion 5 is rotated up around pin shaft 6 under spring drive and divides with microswitch 13 From the second protrusion 5 no longer presses microswitch 13.

One end of rake K1 in first protection circuit is one end of positive input terminal, other end connection varistor Rn1, One end of rake K3, the other end of rake K3 and pressure-sensitive electricity in the other end connection third protection circuit of varistor Rn1 One end connection of Rn3 is hindered, the other end of varistor Rn3 is ground terminal, and one end of the rake K2 in the second protection circuit is One end of negative input end, other end connection varistor Rn2, the other end connection third of varistor Rn2 is protected inclines in circuit One end of inclined portion K3 connects, and the other end of rake K3 is connect with one end of varistor Rn3；The positive input terminal connects direct current The anode of power supply system, the cathode of the negative input end connection DC power-supply system, the ground terminal ground connection.

When microswitch 13 is no longer pressed by the second protrusion 5, connecting terminal P1 output report can be alerted by remote signalling Alert signal, such as microswitch S1: when microswitch S1 is no longer pressed by the second protrusion 5,1 foot of microswitch S1 and 2 Foot is detached from, and is connect with 3 feet, at this point, 1 foot and 3 feet of remote signalling alarm connecting terminal P1 are connected, to realize defeated to external equipment Alarm signal out, similarly, principle of the microswitch S2 as microswitch S3.

Rake 8 is fusible link or fuse.

The utility model uses Y type circuit structure, after varistor Rn1 and Rn2 series connection, is connected across the anode+and bears Between pole-, realizes and the differential mode of circuit is protected；

After varistor Rn1 and Rn3 series connection, it is connected across the anode+ground wire PE between, is realized to the common mode of circuit guarantor Shield；

It after varistor Rn2 and Rn3 series connection, is connected across between the cathode-and ground wire PE, realizes the common mode to circuit Protection.

Photovoltaic lightning protection protector in the utility model is varistor Rn1, varistor Rn2 and varistor Rn3, wherein varistor Rn1 and varistor Rn2 forms one group of protective module in a series arrangement and is connected across DC power-supply system Anode+and cathode-between, realize between positive electrode and negative electrode differential mode protect；Wherein press varistor Rn1 and varistor Rn3 forms one group of protective module in a series arrangement, is connected across between anode+and ground connection PE, realizes to being total between anode and ground wire Mould protection, varistor Rn2 and varistor Rn3 form one group of protective module in a series arrangement, are connected across cathode-and ground connection Between PE, realizes and the common mode between cathode and ground wire is protected.

The photovoltaic lightning protection protector of the utility model can play omnibearing protection when high current or overvoltage invade The effect of circuit.Since general electric power incoming line end equipment impact resistance voltage is IV class impact resistance voltage rating Uw:6kV, it is more than This voltage apparatus will be can be good at limiting voltage control by voltage breakdown, photovoltaic lightning protection protector in 4kV hereinafter, Ensure that 20% safety margin, thus protection power source point of incoming cables or its nearby abut the electrical equipment before consumer unit, including By electrical equipments such as charging electric meters in the power supply into line box of power supply department management.Meanwhile the photovoltaic lightning protection protection Device carries out the anode+and cathode-of DC power-supply system, anode+between ground wire PE and cathode-and ground wire PE comprehensive Common protection.Have the characteristics that normal use that is easy for installation and not influencing circuit arrangement while having replacement convenient.

Claims

1. a kind of photovoltaic lightning protection Surge Protector, it is characterised in that: alert terminals including three protection locations and remote signalling Sub- P1, protection location include overcurrent protection module (15) and switch module (16), and overcurrent protection module (15) includes overcurrent protection Seat (1), the contact pin (20) for being installed in overcurrent protection seat (1) and the rotating mechanism being arranged on overcurrent protection seat (1), switch module (16) microswitch (13) for including switch base (17) and being arranged on switch base (17), the rotating mechanism include passing through pin shaft (6) with overcurrent protection seat (1) hinged substrate (2), spring (12) and fusible link (10), substrate (2) is equipped with spring coupling part (14), the first protrusion (7) and the second protrusion (5), fusible link (10) one end be the fixing end being fixed on overcurrent protection seat, The other end is the spring coupling part (14) of spring (12) one end connecting substrate (2), another by soldering tin block (19) connecting contact pin (20) The fixing end of end connection fusible link (10), when the first protrusion (7) of substrate (2) is against fusible link (10) side, substrate (2) The second protrusion (5) push switch module (16) microswitch (13)；

Setting the microswitch (13) in three protection locations is respectively microswitch S1, microswitch S2 and microswitch S3, Rake (8) in three protection locations is respectively rake K1, rake K2 and rake K3, is also divided in three protection locations It She You not varistor Rn1, varistor Rn2 and varistor Rn3；

Rake K1 and varistor Rn1 the first protection circuit in series, rake K2 and varistor Rn2 in series the Two protection circuits, rake K3 and varistor Rn3 third in series protect circuit, the first protection circuit and the second protection electricity It connects again with third protection circuit after road is in parallel；

The anode of rake K1 connection DC power-supply system in first protection circuit, second protects the rake K2 in circuit to connect The cathode of DC power-supply system is connect, third protects the varistor Rn2 ground connection in circuit；

1 foot of 1 foot of microswitch S1,1 foot of microswitch S2 and microswitch S3 alerts the 1 of connecting terminal P1 with remote signalling Foot connection, 2 feet of 2 feet of microswitch S1,2 feet of microswitch S2 and microswitch S3 alert connecting terminal P1 with remote signalling 2 feet connection, 3 feet of 3 feet of microswitch S1,3 feet of microswitch S2 and microswitch S3 with remote signalling alert terminals 3 feet of sub- P1 connect.

2. a kind of photovoltaic lightning protection Surge Protector as described in claim 1, it is characterised in that: when fusible link (10) and insert When needle separates, the second protrusion (5) is rotated around pin shaft (6) and is separated with microswitch (13).

3. a kind of photovoltaic lightning protection Surge Protector as described in claim 1, it is characterised in that: overcurrent protection seat (1) with Switch base (17) is detachably connected, and is installed on overcurrent protection seat (1) two cuttings (3), and the end of cutting (3), which is equipped with, is located at overcurrent The hook part (4) of protecting seat (1) outside, two slots (18) are arranged in the hook part (4) of corresponding two cuttings (3) on switch base (17), and two The hook part (4) of cutting (3) is inserted into respectively in two slots (18).

4. a kind of photovoltaic lightning protection Surge Protector as described in claim 1, it is characterised in that: in the first protection circuit One end of rake K1 is one end of positive input terminal, other end connection varistor Rn1, the other end connection of varistor Rn1 Third protects one end of rake K3 in circuit, and the other end of rake K3 is connect with one end of varistor Rn3, varistor The other end of Rn3 is ground terminal, and one end of the rake K2 in the second protection circuit is negative input end, the pressure-sensitive electricity of other end connection One end of Rn2 is hindered, one end connection of rake K3, rake K3 in the other end connection third protection circuit of varistor Rn2 The other end connect with one end of varistor Rn3；The anode of the positive input terminal connection DC power-supply system, the negative input The cathode of end connection DC power-supply system, the ground terminal ground connection.

5. a kind of photovoltaic lightning protection Surge Protector as described in claim 1, it is characterised in that: the contact pin is pressure-sensitive electricity One of metal electrode pin of resistance.