CN214506545U - Two-in-one lightning protection device with large-current integrated power control system - Google Patents
Two-in-one lightning protection device with large-current integrated power control system Download PDFInfo
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- CN214506545U CN214506545U CN202121118692.1U CN202121118692U CN214506545U CN 214506545 U CN214506545 U CN 214506545U CN 202121118692 U CN202121118692 U CN 202121118692U CN 214506545 U CN214506545 U CN 214506545U
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Abstract
The utility model discloses a two unification lightning protection devices with big through-flow integrated power control system, this two unification lightning protection devices include the shell and locate the circuit board in the shell, be provided with the lightning protection circuit on the circuit board, the lightning protection circuit has power input end, power output end, control signal input and control signal output end, power input end's live wire end L, ground wire end PE, zero line end N and power output end's live wire end L, ground wire end PE, zero line end N correspond interconnect, the lightning protection circuit still includes big through-flow power supply circuit and differential mode two-stage protection circuit. The utility model discloses two unification lightning protection devices of big through-flow integrated power control is the special lightning protection device of making according to the lightning protection requirement in IEC, the GB standard specification and infrared alarm system's concrete characteristics. The lightning protection device is integrated with a power source lightning protection device and a control signal circuit lightning protection device, each part adopts a multi-stage movable structural design, and the lightning protection device has a multi-stage protection function.
Description
Technical Field
The utility model relates to a lightning protection device, specific saying so relates to a two unification lightning protection devices with big through-flow integrated power control system.
Background
At present, security and protection become a key focus of science and technology industry, and the development status can be said to be day-to-day. In a common definition, a security system consists of five major parts: perimeter alarm systems, video surveillance systems, visual intercom systems, user alarm systems, and electronic patrol systems. The perimeter alarm system is an important component of the security system and is also the key point of the security system, and the product scale accounts for 15% of the security industry.
The work in this aspect of China starts late, and due to the large technical difficulty, the investment is large, the demand is not large, so that the manufacturers and the input manpower are not large. With the development of society and the progress of science and technology, a large amount of social wealth, military importance, important facilities, power stations, inflammable and explosive material warehouses and the like need to be effectively prevented by a perimeter alarm system, and the safety of the facilities, the power stations, the inflammable and explosive material warehouses and the like is ensured. Therefore, the perimeter alarm system is receiving more and more attention in various aspects.
The infrared alarm system has mature technical development and relatively low product price, so the infrared alarm system is dominant in the perimeter alarm system. Infrared alarm systems are more commonly used on the outdoor side of outdoor enclosure fences or building windows. The positions are relatively independent and higher, so that the probability and the amplitude of lightning stroke of the infrared alarm system are increased. The existing monitoring system in the market uses the power control two-in-one lightning protection device, the maximum lightning surge current that the power part can bear is 10kA (8/20 mus), the maximum lightning surge current that the control signal part can bear is 5kA (8/20 mus), 10kV/5kA (1.2/50 mus &8/20 mus combined wave), this kind of endurance can't meet the requirement of outdoor infrared alarm system to the lightning protection level.
SUMMERY OF THE UTILITY MODEL
To the not enough among the prior art, the to-be-solved technical problem of the utility model lies in providing a two unification lightning protection devices with big through-flow integrated power control system, the purpose of designing this two unification lightning protection devices is the lightning protection performance that improves the lightning protection device.
In order to solve the technical problem, the utility model discloses a following scheme realizes: the utility model discloses a two unification lightning protection devices with big through-flow integrated power control system, this two unification lightning protection devices include the shell and locate the circuit board in the shell, be provided with the lightning protection circuit on the circuit board, the lightning protection circuit has power input end, power output end, control signal input end and control signal output end, power input end's live wire end L, ground wire end PE, zero line end N and power output end's live wire end L, ground wire end PE, zero line end N correspond interconnect, the lightning protection circuit still includes:
the high-current power supply circuit comprises a plurality of first series circuits, a plurality of second series circuits and a third series circuit, wherein the first series circuits, the second series circuits and the third series circuits are all formed by serially connecting temperature fuses and piezoresistors, two ends of each first series circuit are respectively connected between the live wire end L and the ground wire end PE, one end of each temperature fuse on each first series circuit is connected to the live wire end L, two ends of each second series circuit are respectively connected between the PE ground wire end N and the zero line end N, one end of each temperature fuse on each second series circuit is connected to the ground wire end PE, and two ends of each third series circuit are respectively connected between the live wire end L and the zero line end N;
a differential mode two-stage protection circuit, which comprises a gas discharge tube GDT1, a resistor R1, a resistor R2, a transient voltage suppression diode TVS1, a transient voltage suppression diode TVS2 and a transient voltage suppression diode TVS3, wherein the transient voltage suppression diode TVS1 and the transient voltage suppression diode TVS2 are connected in series, two ends of the transient voltage suppression diode TVS2 after being connected in series are respectively connected with the resistor R1 and the resistor R2, the transient voltage suppression diode TVS1 and the transient voltage suppression diode TVS2 are connected in series and then form a parallel circuit with the transient voltage suppression diode TVS3, two ends of the transient voltage suppression diode TVS3 are also respectively connected to a pin 1 of a control signal output terminal H2 and a pin 2 of a control signal output terminal H2, and the other ends of the resistor R1 and the resistor 2 are respectively connected to a pin 1 of a control signal input terminal H1 and a pin 2 of a control signal input terminal H1; the gas discharge tube GDT1 has three ports, two of which are respectively connected to pin 1 of the win control signal input terminal H1 and pin 2 of the control signal input terminal H1, the third port of which is connected to the ground terminal PE, and the circuit node between the TVS1 and TVS2 is connected to the third port of the gas discharge tube GDT 1.
Furthermore, each piezoresistor is configured with different piezovoltage values, so that the maximum continuous operation voltage of the lightning protection device is expanded.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses two unification lightning protection devices of big through-flow integrated power control is the special lightning protection device of making according to the lightning protection requirement in IEC, the GB standard specification and infrared alarm system's concrete characteristics. The lightning protection device is integrated with a power source lightning protection device and a control signal circuit lightning protection device, each part adopts a multi-stage movable structural design, and the lightning protection device has a multi-stage protection function. The maximum lightning surge current which can be borne by the power supply part is 30kA (8/20 mu s), the maximum lightning surge current which can be borne by the control signal part is 10kA (8/20 mu s), 20kV/10kA (1.2/50 mu s &8/20 mu s combined wave) and 2kA (D1 type high energy 10/350 mu s), and the lightning protection requirement of the outdoor infrared alarm system is met.
The utility model discloses there are following several advantages on saving production resource and improving customer use comfort:
1. scalability of maximum continuous operation voltage (power supply part): the maximum continuous operation voltage range of 12V-505V DC and 220V-385V AC is supported, and the universality is strong.
2. Scalability of current capacity (power supply part): the maximum impact current range is supported to be 0-30kA (8/20 mu s), and the requirement of a customer on large current capacity is met.
3. Scalability of current capacity (control signal part): the maximum impact current range is supported to be 0-10kA (8/20 mu s), 20kV/10kA (1.2/50 mu s &8/20 mu s combined wave) and 2kA (D1 type high energy 10/350 mu s), and the requirement of a client on large flow capacity is met.
4. Residual low (control signal part): and when the common mode and the differential mode are impacted by a combined wave of 1.2/50 mu s &8/20 mu s and 10kV/5kA, the residual voltage is not more than 270V.
5. The safety is high: the front end of each piezoresistor is connected with a temperature fuse in series, and the piezoresistor is disconnected with the main loop in time when the piezoresistor is degraded and abnormal; the inner space is large, and the piezoresistor or the gas discharge tube is prevented from discharging to the outer shell in the process of leakage current.
Drawings
Fig. 1 is the lightning protection circuit diagram of the present invention.
Fig. 2 is a circuit diagram of the differential mode two-stage protection circuit of the present invention.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making more clear and definite definitions of the protection scope of the present invention. It is obvious that the described embodiments of the invention are only some of the embodiments of the invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the two elements may be directly connected or indirectly connected through an intermediate medium, or may be communicated with each other inside the two elements, or may be wirelessly connected or wired connected. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.
Example 1: the utility model discloses a concrete structure as follows:
please refer to fig. 1-2, the utility model discloses a two unification lightning protection devices with big through-flow integrated power control system, this two unification lightning protection devices include the shell and locate the circuit board in the shell, be provided with lightning protection circuit on the circuit board, lightning protection circuit has power input end, power output end, control signal input end and control signal output end, power input end's live wire end L, ground wire end PE, zero line end N and power output end's live wire end L, ground wire end PE, zero line end N correspond each other and connect, lightning protection circuit still includes:
the high-current power supply circuit comprises a plurality of first series circuits, a plurality of second series circuits and a third series circuit, wherein the first series circuits, the second series circuits and the third series circuits are all formed by serially connecting temperature fuses and piezoresistors, two ends of each first series circuit are respectively connected between the live wire end L and the ground wire end PE, one end of each temperature fuse on each first series circuit is connected to the live wire end L, two ends of each second series circuit are respectively connected between the PE ground wire end N and the zero line end N, one end of each temperature fuse on each second series circuit is connected to the ground wire end PE, and two ends of each third series circuit are respectively connected between the live wire end L and the zero line end N;
a differential mode two-stage protection circuit, which comprises a gas discharge tube GDT1, a resistor R1, a resistor R2, a transient voltage suppression diode TVS1, a transient voltage suppression diode TVS2 and a transient voltage suppression diode TVS3, wherein the transient voltage suppression diode TVS1 and the transient voltage suppression diode TVS2 are connected in series, two ends of the transient voltage suppression diode TVS2 after being connected in series are respectively connected with the resistor R1 and the resistor R2, the transient voltage suppression diode TVS1 and the transient voltage suppression diode TVS2 are connected in series and then form a parallel circuit with the transient voltage suppression diode TVS3, two ends of the transient voltage suppression diode TVS3 are also respectively connected to a pin 1 of a control signal output terminal H2 and a pin 2 of a control signal output terminal H2, and the other ends of the resistor R1 and the resistor 2 are respectively connected to a pin 1 of a control signal input terminal H1 and a pin 2 of a control signal input terminal H1; the gas discharge tube GDT1 has three ports, two of which are respectively connected to pin 1 of the win control signal input terminal H1 and pin 2 of the control signal input terminal H1, the third port of which is connected to the ground terminal PE, and the circuit node between the TVS1 and TVS2 is connected to the third port of the gas discharge tube GDT 1.
A preferred technical solution of this embodiment: each piezoresistor is configured with different piezovoltage values, so that the maximum continuous operation voltage of the lightning protection device is expanded.
Example 2:
the following is the principle of the lightning protection device of the utility model:
the first series circuit and the second series circuit are provided with five groups, and the third series circuit is provided with one group.
The traditional power control two-in-one lightning protection device is limited by the small size of a universal shell mould, and only can use small volume, namely voltage-sensitive voltage (U)1mA) The maximum continuous operation voltage of the small piezoresistor with small maximum continuous operation voltage can only reach 350V direct current and 220V alternating current. Limited by the volume of the housing and the small size of the terminal holesOnly small terminals can be used, and the rated voltage value can only reach 300V. The utility model discloses big through-flow integrated power control two-in-one lightning protection device, the shell independently opens the mould, has increased the inside volume of lightning protection device, makes the lightning protection device can use the piezoresistor of bigger volume; the hole site of the wiring terminal at the shell baffle is increased, so that the lightning protection device can use a medium-sized wiring terminal, and the rated voltage can reach 600V. The power part of the large-current integrated power control two-in-one lightning arrester is composed of varistors MOV 1-MOV 11 (as shown in a schematic diagram of a circuit of the large-current integrated power control two-in-one lightning arrester), and different voltage-sensitive voltages (U) are configured1mA) The voltage dependent resistors MOV 1-MOV 11 can expand the maximum continuous operation voltage of the lightning arrester and support the maximum continuous operation voltage range of 12V-505V DC and 220V-385V AC.
The traditional power control two-in-one lightning protection device is limited by the small size of a universal shell die, the low impact tolerance value of a wiring terminal and the thin copper foil of a circuit board, the through-current capacity of a power supply part can only reach 10kA (8/20 mu s), and the power supply part cannot bear multiple maximum impact currents. The utility model discloses big through-flow integrated power control two-in-one lightning protection device, the shell independently opens the mould, has increased the internal volume of lightning protection device, can put into the piezoresistor that the volume is bigger, the discharge capacity is higher; the hole sites of the wiring terminals at the shell baffle are increased, and the wiring terminals which can bear 30kA at most can be used; the thickness and the width of the copper foil of the PCB are increased, the thickness is 2 ounces, and the width is 4mm, so that the through-current capacity of the circuit of the PCB is greatly improved. Through the improvement, the varistors MOV 1-MOV 11 with different current capacities are configured, so that the current capacity of the lightning arrester can be expanded to 30kA (8/20 mu s) at most.
The utility model discloses two unification lightning protection devices of big through-flow integrated power control, the control signal part common mode, differential mode adopts two-stage safeguard measure, gas discharge tube GDT1 is as first order protection promptly, transient suppression diode TVS1, TVS2, TVS2 is as the second grade protection, the centre is with resistor R1, R2 is as the decoupling component, greatly reduced lightning protection device residual voltage, when 1.2/50 mus &8/20 mus combined wave strikes 10kV/5kA, the residual voltage all is not greater than 270V.
The traditional power control two-in-one lightning protection device is limited by the small size of a universal shell die, a temperature fuse is not arranged or only arranged on an L line, and only a small distance exists between a piezoresistor and a metal shell, so that the piezoresistor is very easy to break down to discharge to the shell when lightning current impacts, and potential safety hazards are increased; the utility model discloses two unification lightning protection devices of big through-flow integrated power control, the independent die sinking of shell have increased the inside volume of lightning protection device, and temperature fuse F1 ~ F11 is all established ties to each piezoresistor front end. When the varistor deteriorates or becomes abnormal, the temperature of the varistor rises more seriously to break down the short circuit. The rated current of the temperature fuses F1-F11 is 10A, the rated action temperature is 104 ℃, and when the temperature of the piezoresistors MOV 1-MOV 11 rises, the temperature fuses can be timely disconnected with a main loop to prevent the piezoresistors from firing; when the working current of the line is overlarge, the line can be timely disconnected with the main circuit, and the breakdown short circuit of the piezoresistor is prevented. Enough distance is left between the varistors MOV 1-MOV 11 and the gas discharge tube GDT1 and the metal casing, and the hidden trouble that the varistors or the gas discharge tubes discharge to the casing when lightning current impacts is avoided.
The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent flow changes made by the contents of the specification and the drawings, or directly or indirectly applied to other related technical fields, are included in the same way in the protection scope of the present invention.
Claims (2)
1. The utility model provides a two unification lightning protection devices with big through-flow integrated power control system, this two unification lightning protection devices include the shell and locate the circuit board in the shell, be provided with lightning protection circuit on the circuit board, lightning protection circuit has power input end, power output end, control signal input end and control signal output end, power input end's live wire end L, ground wire end PE, zero line end N and power output end's live wire end L, ground wire end PE, zero line end N correspond interconnect, its characterized in that, lightning protection circuit still includes:
the high-current power supply circuit comprises a plurality of first series circuits, a plurality of second series circuits and a third series circuit, wherein the first series circuits, the second series circuits and the third series circuits are all formed by serially connecting temperature fuses and piezoresistors, two ends of each first series circuit are respectively connected between the live wire end L and the ground wire end PE, one end of each temperature fuse on each first series circuit is connected to the live wire end L, two ends of each second series circuit are respectively connected between the PE ground wire end and the zero line end N, one end of each temperature fuse on each second series circuit is connected to the ground wire end PE, and two ends of each third series circuit are respectively connected between the live wire end L and the zero line end N;
a differential mode two-stage protection circuit, which comprises a gas discharge tube GDT1, a resistor R1, a resistor R2, a transient voltage suppression diode TVS1, a transient voltage suppression diode TVS2 and a transient voltage suppression diode TVS3, wherein the transient voltage suppression diode TVS1 and the transient voltage suppression diode TVS2 are connected in series, two ends of the transient voltage suppression diode TVS2 after being connected in series are respectively connected with the resistor R1 and the resistor R2, the transient voltage suppression diode TVS1 and the transient voltage suppression diode TVS2 are connected in series and then form a parallel circuit with the transient voltage suppression diode TVS3, two ends of the transient voltage suppression diode TVS3 are also respectively connected to a pin 1 of a control signal output terminal H2 and a pin 2 of a control signal output terminal H2, and the other ends of the resistor R1 and the resistor 2 are respectively connected to a pin 1 of a control signal input terminal H1 and a pin 2 of a control signal input terminal H1; the gas discharge tube GDT1 has three ports, two of which are respectively connected to pin 1 of the win control signal input terminal H1 and pin 2 of the control signal input terminal H1, the third port of which is connected to the ground terminal PE, and the circuit node between the TVS1 and TVS2 is connected to the third port of the gas discharge tube GDT 1.
2. The two-in-one lightning protection device with a large-current integrated power control system as claimed in claim 1, wherein each varistor is configured with different varistor voltage values, so as to extend the maximum continuous operation voltage of the lightning protection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121118692.1U CN214506545U (en) | 2021-05-24 | 2021-05-24 | Two-in-one lightning protection device with large-current integrated power control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121118692.1U CN214506545U (en) | 2021-05-24 | 2021-05-24 | Two-in-one lightning protection device with large-current integrated power control system |
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| Publication Number | Publication Date |
|---|---|
| CN214506545U true CN214506545U (en) | 2021-10-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121118692.1U Expired - Fee Related CN214506545U (en) | 2021-05-24 | 2021-05-24 | Two-in-one lightning protection device with large-current integrated power control system |
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|---|---|
| CN (1) | CN214506545U (en) |
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2021
- 2021-05-24 CN CN202121118692.1U patent/CN214506545U/en not_active Expired - Fee Related
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Granted publication date: 20211026 |