CN210985039U

CN210985039U - Lightning stroke protection device of remote centralized meter reading device

Info

Publication number: CN210985039U
Application number: CN201921971380.8U
Authority: CN
Inventors: 王晟; 赵义; 李泽青; 夏兆福
Original assignee: Tianjin Huachun Smart Energy Technology Development Co ltd
Current assignee: Tianjin Huachun Smart Energy Technology Development Co ltd
Priority date: 2019-11-15
Filing date: 2019-11-15
Publication date: 2020-07-10
Anticipated expiration: 2029-11-15

Abstract

The utility model provides a long-range collection ware of copying thunderbolt protection device, including table case, positioning baffle, mounting panel, insert the line concentration end soon, antenna system, protection circuit breaker, data line joint and communication protector, communication protector and data line joint electric connection to fixed as an organic whole structure and install on the mounting panel, communication protector includes piezo-resistor protection circuit and TVS pipe protection circuit that cascade in proper order and the common mode inductance who connects piezo-resistor protection circuit and TVS pipe protection circuit, the data line joint includes the joint body, fixed cover and the position sleeve of being connected with the joint body; this thunderbolt protection device not only maintains the collection and copies the ware and normally work under various thunderbolt conditions, and the convenient connection of the structure of data line joint under the field no tool bar condition can be solved, prevents simultaneously that data line plug and data line joint from breaking away from the connection, guarantees the connection stability of working process.

Description

Lightning stroke protection device of remote centralized meter reading device

Technical Field

The utility model relates to a lightning protection device technical field especially relates to a thunderbolt protection device that is used for outdoor wireless or wired long-range collection to copy ware.

Background

The meter in the prior art is generally installed outdoors through a simple installing box body, for a meter installed outdoors, the existing installing box body is too simple in structure and cannot protect the meter in all directions, for example, the damage of lightning surge to a meter circuit, the failure of a connector and the like exist, the connector is difficult to connect due to rusting of the connector during meter reading, the data connection cannot be effectively carried out, the cable connection of the connector is complex, the operation can be carried out only by a special tool bar, and the working efficiency of a meter reader is low; in addition, the realization of prior art's strapping table lightning protection function generally concatenates the lightning protection device in order to realize the lightning protection function on connecting, and lightning protection device installation reliability is not enough, is located the abominable field environment of environment, takes place easily not hard up to lead to the lightning protection function to become invalid.

SUMMERY OF THE UTILITY MODEL

For prior art's not enough more than solving, the utility model provides a lightning protection device of ware is copied to long-range collection, it has the data line joint of convenient plugging into, and the technical staff of being convenient for operates, and on it with the lightning protection device that connects the integral structure and set up, can guarantee the collection and copy the reliability of ware and each component installation, and the device can be used to multiple metering tables such as smart electric meter, intelligent water gauge, heat supply, air conditioning unit and the use of ware is copied to the collection.

The utility model discloses a realize through following technical scheme:

a lightning stroke protection device of a remote meter reading device comprises a meter box which is used for installing the meter reading device and can form a closed space, a positioning baffle plate of the positioning meter reading device, a mounting plate which is fixed on the lower portion in the meter box, a quick-plug wire collecting end which is used for connecting the meter reading device with each cable, an antenna system which is used for remotely interacting the meter reading device, a protection circuit breaker which is connected with a power supply cable of the meter reading device, a data line connector which is plugged with an external data line plug to transmit data and a communication protector which is positioned at the front end of the quick-plug wire collecting end at the rear end of the data line connector, wherein the communication protector is electrically connected with the data line connector and is installed on the mounting plate in an integrated structure, the quick-plug wire collecting end and the protection circuit breaker are fixed on the mounting plate, and the antenna system, the protection circuit breaker and the communication protector are electrically connected with the meter reading device through the quick-plug wire collecting end, wherein the communication protector comprises a, The common mode inductor is connected with the piezoresistor protection circuit and the TVS tube protection circuit;

the data line joint is connected with an external data line plug pin, which comprises a joint body, a fixed sleeve and a positioning sleeve, wherein the fixed sleeve and the positioning sleeve are connected with the joint body, the positioning sleeve is two semicircular cylinders which are buckled and connected through a buckling structure, the end part of the data line plug is limited between the two semicircular cylinders, one end of the positioning sleeve is a positioning end part with a convex step, the free end of the fixed sleeve is a fixed end part with a convex step in an inner hole, the positioning end part and the fixed end part are provided with a fan-shaped slot and a fan-shaped lug which are distributed annularly, the fan-shaped lug of the positioning end part is matched with the fan-shaped slot of the fixed end part, the fixed sleeve is also provided with a positioning groove connected with the fixed end part, an annular elastic sheet, the positioning end part is rotated, the elastic sheet elastically compresses the end surface of the positioning end part, so that the fan-shaped convex block of the positioning end part is seated on the fan-shaped convex block of the fixing end part.

Preferably, the voltage dependent resistor protection circuit comprises a first voltage dependent resistor MOV1, the first voltage dependent resistor MOV1 is connected across the two poles of the data communication terminal, the TVS tube protection circuit is connected across the two poles of the communication power supply terminal and comprises a second voltage dependent resistor MOV2, a semiconductor discharge tube TSS1 and a second voltage dependent resistor MOV3 which are connected in series, and the two poles of the data communication terminal are also connected with the TVS tube protection circuit.

Preferably, the first-stage varistor MOV1 is a 20D221K varistor, the second-stage first varistor MOV2 and the second-stage second varistor MOV3MOV3 are 10D221 varistors, and the semiconductor discharge tube TSS1 is a P3500SA discharge tube.

Preferably, the fixing sleeve comprises a sleeve nut pressed on the joint body and a connecting sleeve in threaded connection with the sleeve nut, and the positioning groove and the fixing end part are positioned on the connecting sleeve.

Preferably, be equipped with the antenna hole in the table case and by inserting the antenna groove that line concentration end lower extreme extended to the antenna hole soon, outside antenna system's antenna and insert antenna protector back and draw forth the table case by the antenna hole, on antenna protector was fixed in the mounting panel, antenna protector included a plurality of GDT and ESD that connect in parallel.

Preferably, an L-shaped cable sheath is fixed on the outer wall surface of the lower end of the meter box through a flange joint, a sealing gasket is arranged at an upper port of the cable sheath connected with the meter box, and a plurality of cross holes for penetrating cables are formed in the sealing gasket.

Compared with the prior art, the beneficial effects of the utility model are that:

this thunderbolt protection device's data line connects and inserts the circuit after becoming the module through fixed combination with communication protector, and be fixed in the module on the mounting panel, its connection stability is better, communication protector can satisfy the collection and copy the surge protection requirement of ware under various thunderbolt conditions, and the position sleeve and the fixed cover that the data line connects the setting, can bare-handedly accomplish the position sleeve and be connected with fixed cover with the position sleeve of being connected of data line plug, the convenient connection under the field no tool bar condition of having solved is refuted, prevent simultaneously that data line plug and data line from connecting the disconnection, guarantee the connection stability of working process.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

FIG. 1 is a schematic view of the overall structure of the lightning protection device of the present invention;

FIG. 2 is a schematic view of the structure of the joint of FIG. 1;

FIG. 3 is a schematic view of the structure of the fixed end of FIG. 2;

fig. 4 is a circuit configuration diagram of the communication protector;

FIG. 5 is a circuit block diagram of the antenna protector;

in the figure: 1. meter box, 11, perspective window, 12, location baffle, 13, the mounting panel, 2, the concentrated terminal of fast inserting, 3, antenna system, 31, antenna protector, 4, communication protector, 5, the data line connects, 51, the joint body, 511, the contact pin, 52, the sleeve nut, 53, the adapter sleeve, 531, the constant head tank, 5311, compress tightly the plane, 532, fixed tip, 5321, fan-shaped lug, 5322, fan-shaped slot, 533, the jack, 54, the position sleeve, 541, the location tip, 542, the lock structure, 543, handheld portion, 55, the shell fragment, 6, connect the protective sheath, 7, the protection circuit breaker, 8, the cable sheath, 9, the data line plug.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

As shown in FIGS. 1-5, the utility model provides a lightning protection device of remote meter reading device, all electrical components and parts are installed inside it to isolate the erosion and destruction of the harsh environment, it includes meter box 1 which can form the airtight space for installing the meter reading device, perspective window 11 for observing the meter reading device data window in the meter box 1, positioning baffle 12 of the positioning meter reading device, mounting plate 13 fixed on the lower part in the meter box 1, fast plug line concentration end 2 for connecting the meter reading device with each cable, antenna system 3 for remote interaction of the meter reading device, protection breaker 7 connected with the power supply cable of the meter reading device, data line connector 5 inserted with the external data line plug 9 for data transmission and communication protector 4 located at the front end of the fast plug line concentration end 2 at the rear end of the data line connector 5, the communication protector 4 is electrically connected with the data line connector 5, after the integrated structure is assembled by connecting plates on a data line connector 5, or the integrated structure is formed by any other modularized connecting modes, the integrated circuit is connected to a circuit and is fixed on a mounting plate 13, a quick plug wire collecting end 2 and a protection circuit breaker 7 are both fixed on the mounting plate 13, an antenna system 3, the protection circuit breaker 7 and a communication protector 4 are electrically connected with a meter reading device through the quick plug wire collecting end 2, and the quick plug wire collecting end 2 uses a commercially available STTB2.5 quick plug end, wherein the communication protector 4 comprises a piezoresistor protection circuit and a TVS tube protection circuit which are sequentially cascaded, and a common-mode inductor which connects the piezoresistor protection circuit and the TVS tube protection circuit, the piezoresistor protection circuit can absorb most of lightning strike energy, the TVS tube protection circuit can absorb residual lightning strike energy, and the damage of lightning strike high voltage to a rear-stage circuit can be prevented through multi-protection;

after the data line connector 5 is connected with the pin 511 of the external data line plug 9, the connector is required to have a certain degree of stress capability to prevent the external force of the data line from disconnecting, the data line connector 5 comprises a connector body 51, a fixed sleeve connected with the connector body 51 and a positioning sleeve 54, the positioning sleeve 54 is two semicircular cylinders connected by a buckling structure 542 in a buckling manner, the positioning sleeve 54 is a rigid plastic product, the buckling structure 542 can be mutually matched convex points and concave grooves on a buckling section, or as shown in fig. 2, an extending end is inserted into a slot, the extending end and the slot section are provided with a convex point and a concave groove, the end of the data line plug 9 is limited between the two semicircular cylinders, referring to fig. 2 again, one end of the positioning sleeve 54 is a positioning end 541 with a step protruding on an outer circular surface, the free end of the fixed sleeve is a fixed end 532 with a step protruding in an inner hole, the positioning end 541 and the fixed end 532 are provided with a fan-shaped slot 5322 and, the fan-shaped convex block of the positioning end portion 541 is matched with the fan-shaped slot 5322 of the fixing end portion 532, the fixing sleeve is further provided with a positioning groove 531 positioned at the rear end of the fixing end portion 532, an annular elastic sheet 55 is arranged in the positioning groove 531, the handheld portion 543 on the handheld positioning sleeve 54 pulls the data line plug 9 to penetrate into the fixing sleeve and insert the data line connector 5, finally, the fan-shaped convex block of the positioning end portion 541 of the positioning sleeve 54 is inserted into the fan-shaped slot 5322 of the fixing end portion 532, the positioning end portion 541 is rotated, the elastic sheet 55 elastically compresses the end face of the positioning end portion 541, and the fan-shaped convex block of the positioning end portion 541 is located on the fan-shaped convex block 53.

The data line joint 5 and the communication protector 4 of the lightning strike protection device are fixedly combined into a module and then connected into a circuit, the module is fixed on the mounting plate 13, the connecting stability is good, the voltage dependent resistor protection circuit and the TVS tube protection circuit of the communication protector 4 have triple protection, not only have the capability of protecting common mode voltage, but also have the capability of protecting differential mode voltage, can also inhibit the conduction disturbance brought by a power supply, greatly enhances the safety and reliability of the meter reading device, can meet the surge protection requirement of the meter reading device under various lightning stroke conditions, and the positioning sleeve 54 and the fixing sleeve arranged on the data line joint 5, the connection between the positioning sleeve 54 and the data line plug 9 and the connection between the positioning sleeve 54 and the fixed sleeve can be completed by bare hands, the convenient connection under the condition of no tool bars in the field is solved, meanwhile, the data line plug 9 is prevented from being disconnected from the data line connector 5, and the connection stability in the working process is ensured.

As a further technical scheme, as shown in FIG. 4, the varistor protection circuit comprises a first-stage varistor MOV1, a first-stage varistor MOV1 is connected across two poles of a data communication end, two stages of the communication power supply end are connected through a varistor protection circuit, a TVS tube protection circuit is connected across two poles of a communication power supply end and comprises a second-stage first varistor MOV2, a semiconductor discharge tube TSS1 and a second-stage second varistor MOV3 which are connected in series, two poles of the data communication end are also connected with the TVS tube protection circuit, the first-stage varistor MOV1 and the semiconductor discharge tube TSS1 are connected in parallel and connected across a common-mode inductor L respectively, the varistor protection circuit and the TVS tube protection circuit protect the TX end and the RX end of the data communication end, the common-mode is a full-duplex mode, the common-mode inductor L is located between the varistor protection circuit and the semiconductor protection circuit to play a delay role, the varistor protection circuit can be guaranteed to be started preferentially, energy is reduced simultaneously, and the first-stage varistor 221, the second-stage varistor 221 is connected with a second-stage varistor GCV 633, a second-stage varistor 7342, a second-type MOV3, a second-stage varistor 3, a second varistor, a third-stage varistor, a third-.

As a further technical solution, in order to prevent the data line plug 9 from loosening during use, the fixing sleeve includes a sleeve nut 52 press-fitted on the connector body 51 and a connecting sleeve 53 in threaded connection with the sleeve nut 52, the positioning groove 531 and the fixing end 532 are located on the connecting sleeve 53, by rotating the sleeve nut 52, the depth of the positioning sleeve 54 in the connecting sleeve 53 is adjusted, and a certain pressure is applied to the end of the data line plug 9, thereby improving the reliability and stability of plugging.

As a further technical scheme, an antenna hole and an antenna groove extending from the lower end of a fast plug collecting terminal 2 to the antenna hole are arranged in a meter box 1, an antenna of an antenna system 3 is connected into an antenna protector 31 and then led out of the meter box 1 through the antenna hole, the antenna protector 31 is fixed on a mounting plate 13, as shown in FIG. 5, the antenna protector 31 is connected onto the antenna through a plurality of GDTs and ESD which are connected in parallel, wherein the GDT is SPA090F type, the ESD is TUSD03FB type, when the interpolar voltage is large enough, the interpolar gap is subjected to discharge breakdown, the response time is generally less than 10ms, the antenna protector 31 is converted from the original insulation state into a conductive state, similar to a short circuit, the high voltage is conducted with the ground, and the voltage kept between the north and the south under the conductive state is low and is generally 20-50V, so that.

As further technical scheme, be fixed with the cable sheath 8 of L shape through flange joint on the outer wall of table case 1 lower extreme, the last port that cable sheath 8 and table case 1 are connected is equipped with sealed the pad for the protection cable entry does not take place the damage, simultaneously, guarantees the airtight environment in the table case 1, has a plurality of cross holes that are used for wearing to establish the cable on the sealed pad, and each cable of being convenient for inserts in the box.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a thunderbolt protection device of long-range collection ware of copying which characterized in that: the meter box comprises a meter box which is used for installing a meter reading device and can form a closed space, a positioning baffle plate for positioning the meter reading device, a mounting plate fixed below the meter box, a quick-plug line collecting end used for connecting the meter reading device with each cable, an antenna system used for remotely interacting the meter reading device, a protection circuit breaker connected with a power supply cable of the meter reading device, a data line connector inserted with an external data line plug to transmit data and a communication protector positioned at the front end of the quick-plug line collecting end at the rear end of the data line connector, wherein the communication protector is electrically connected with the data line connector and is assembled into an integral structure to be installed on the mounting plate, the quick-plug line collecting end and the protection circuit breaker are fixed on the mounting plate, and the antenna system, the protection circuit breaker and the communication protector are electrically connected with the meter reading device through the quick-plug line collecting end, wherein the communication protector comprises a piezoresistor protection circuit and a TVS tube protection, The common mode inductor is connected with the piezoresistor protection circuit and the TVS tube protection circuit;

2. The lightning strike protection device of a remote centralized meter reader according to claim 1, characterized in that: the voltage dependent resistor protection circuit comprises a first-stage voltage dependent resistor MOV1, wherein the first-stage voltage dependent resistor MOV1 is connected between two poles of a data communication end in a bridging mode, the TVS tube protection circuit is connected between two poles of a communication power supply end in a bridging mode and comprises a second-stage first voltage dependent resistor MOV2, a semiconductor discharge tube TSS1 and a second-stage second voltage dependent resistor MOV3 which are connected in series, and two poles of the data communication end are further connected with the TVS tube protection circuit.

3. The lightning strike protection device of a remote centralized meter reader according to claim 2, characterized in that: the first-stage piezoresistor MOV1 is a 20D221K type piezoresistor, the second-stage first piezoresistor MOV2 and the second-stage second piezoresistor MOV3MOV3 are 10D221 type piezoresistors, and the semiconductor discharge tube TSS1 is a P3500SA type discharge tube.

4. The lightning strike protection device of a remote centralized meter reader according to claim 1, characterized in that: the fixed sleeve comprises a sleeve nut which is sleeved on the joint body in a pressing mode and a connecting sleeve which is in threaded connection with the sleeve nut, and the positioning groove and the fixed end portion are located on the connecting sleeve.

5. The lightning strike protection device of a remote centralized meter reader according to claim 4, characterized in that: the table incasement is equipped with the antenna hole and by inserting the antenna groove that line concentration end lower extreme extended to the antenna hole soon, outside the table case was drawn forth by the antenna hole behind antenna system's the antenna and the access antenna protector, on the antenna protector was fixed in the mounting panel, antenna protector included a plurality of GDT and ESD that connect in parallel.

6. The lightning protection device of the remote meter reading device is characterized in that an L-shaped cable sheath is fixed on the outer wall surface of the lower end of the meter box through a flange joint, a sealing pad is arranged at the upper port of the cable sheath, which is connected with the meter box, and a plurality of cross holes for the cables to penetrate through are formed in the sealing pad.