CN110718802B - Lightning stroke protection device of remote centralized meter reading device - Google Patents
Lightning stroke protection device of remote centralized meter reading device Download PDFInfo
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- CN110718802B CN110718802B CN201911123987.5A CN201911123987A CN110718802B CN 110718802 B CN110718802 B CN 110718802B CN 201911123987 A CN201911123987 A CN 201911123987A CN 110718802 B CN110718802 B CN 110718802B
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- 230000004224 protection Effects 0.000 title claims abstract description 72
- 208000025274 Lightning injury Diseases 0.000 title claims abstract description 16
- 230000001012 protector Effects 0.000 claims abstract description 32
- 238000004891 communication Methods 0.000 claims abstract description 31
- 239000004065 semiconductor Substances 0.000 claims description 8
- 101100314406 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) TPS1 gene Proteins 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000001419 dependent effect Effects 0.000 claims 6
- 238000000034 method Methods 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 3
- 238000009434 installation Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/46—Bases; Cases
- H01R13/502—Bases; Cases composed of different pieces
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
- H01R13/621—Bolt, set screw or screw clamp
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
- H01R13/627—Snap or like fastening
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
- H01R13/629—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/005—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection avoiding undesired transient conditions
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
- H02H9/045—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage adapted to a particular application and not provided for elsewhere
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
- H02H9/06—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage using spark-gap arresters
Landscapes
- Emergency Protection Circuit Devices (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The invention provides a lightning stroke protection device of a remote centralized meter reading device, which comprises a meter box, a positioning baffle, a mounting plate, a quick-plug collecting terminal, an antenna system, a protection circuit breaker, a data line connector and a communication protector, wherein the communication protector is electrically connected with the data line connector and is fixed on the mounting plate as an integral structure; the lightning stroke protection device not only maintains the normal operation of the centralized meter reading device under various lightning stroke conditions, but also can solve the problem of convenient connection under the condition of no tool bar in the field, and simultaneously prevents the disconnection of the data line plug and the data line connector, thereby ensuring the connection stability in the working process.
Description
Technical Field
The invention relates to the technical field of lightning protection devices, in particular to a lightning stroke protection device for an outdoor wireless or wired remote meter reading device.
Background
The prior art meter is generally installed outdoors through a simple installation box body, for a meter installed outdoors, the structure of the existing installation box body is too simple, the meter cannot be protected in all directions, such as damage of lightning surge to a circuit of the meter, joint failure and the like, when meter reading is performed, joint rust often exists, connection is difficult, data connection cannot be effectively performed, and the cable connection of the joint is complex, and a special tool bar is needed for operation, so that the working efficiency of a meter reader is low; in addition, the lightning protection function of the prior art meter is generally realized by connecting the lightning protection device in series on the joint, the installation reliability of the lightning protection device is insufficient, the meter is positioned in a field environment with severe environment, and the lightning protection function is invalid due to easy looseness.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides a lightning stroke protection device of a remote meter reading device, which is provided with a data line connector convenient to connect, is convenient for technicians to operate, and is provided with a lightning protection device integrated with the connector, so that the reliability of the meter reading device and the installation of each element can be ensured.
The invention is realized by the following technical scheme:
The utility model provides a lightning stroke protection device of long-range centralized meter reading ware, a meter box for installing centralized meter reading ware can form airtight space, the location baffle of location centralized meter reading ware, be fixed in the mounting panel of meter box below, a quick-connect line terminal for centralized meter reading ware and each cable connection, an antenna system for centralized meter reading ware long-range interaction, the protection circuit breaker of being connected with centralized meter reading ware power supply cable, the data line joint of grafting with outside data line plug in order to transmit data and the communication protector of being located data line joint rear end quick-connect line terminal front end, communication protector and data line joint electric connection, and fix as an organic whole structure and install on the mounting panel, quick-connect line terminal and protection circuit breaker all are fixed in the mounting panel, antenna system, protection circuit breaker and communication protector all are through quick-connect line terminal and centralized meter reading ware electric connection, wherein, communication protector includes the piezoresistor protection circuit and TVS tube protection circuit that concatenates in proper order, and the common mode inductance of connecting piezoresistor protection circuit and TVS tube protection circuit;
The data line connector is connected with an external data line plug pin, the data line connector comprises a connector body, a fixing sleeve and a positioning sleeve, the fixing sleeve and the positioning sleeve are connected with the connector body in a buckled mode, the end portion of the data line plug is limited between the two semicircular cylinders, one end of the positioning sleeve is a positioning end portion with a protruding step, the free end of the fixing sleeve is a fixing end portion with a protruding step, the positioning end portion and the fixing end portion are provided with fan-shaped slots and fan-shaped protruding blocks which are distributed in an annular mode, the fan-shaped protruding blocks of the positioning end portion are matched with the fan-shaped slots of the fixing end portion, a positioning groove connected with the fixing end portion is further formed in the fixing sleeve, an annular elastic piece is arranged in the positioning groove, the fan-shaped protruding blocks of the positioning end portion are inserted into the fan-shaped slots of the fixing end portion, the positioning end portion is rotated, and the elastic piece elastically compresses the end face of the positioning end portion to enable the fan-shaped protruding blocks of the positioning end portion to be seated on the fan-shaped protruding blocks of the fixing end portion.
Preferably, the varistor protection circuit comprises a first-stage varistor MOV1, the first-stage varistor MOV1 is bridged between two poles of the data communication end, the TVS tube protection circuit is bridged between two poles of the communication power supply end, the varistor protection circuit comprises a second-stage first varistor MOV2, a semiconductor discharge tube TSS1 and a second-stage second varistor MOV3 which are connected in series, and the two poles of the data communication end are also connected with the TVS tube protection circuit.
Preferably, the first-stage piezoresistor MOV1 is a 20D221K type piezoresistor, the second-stage first piezoresistor MOV2 and the second-stage second piezoresistor MOV3 are 10D221 type piezoresistors, and the semiconductor discharge tube TSS1 is a P3500SA type discharge tube.
Preferably, the fixing sleeve comprises a sleeve nut sleeved on the connector body in a pressing mode and a connecting sleeve connected with the sleeve nut in a threaded mode, and the positioning groove and the fixing end portion are located on the connecting sleeve.
Preferably, an antenna hole and an antenna slot extending from the lower end of the fast-inserting collecting terminal to the antenna hole are arranged in the meter box, an antenna of the antenna system is led out of the meter box from the antenna hole after being connected into the antenna protector, the antenna protector is fixed on the mounting plate, and the antenna protector comprises a plurality of GDT and ESD connected 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 the upper port of the cable sheath, which is 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 invention has the beneficial effects that:
the data line connector and the communication protector of the lightning stroke protection device are fixedly combined into a module and then connected into a circuit, the module is fixed on the mounting plate, the connection stability is good, the communication protector can meet the surge protection requirements of the centralized meter reading device under various lightning stroke conditions, the positioning sleeve and the fixing sleeve are arranged on the data line connector, the connection of the positioning sleeve and the data line plug and the connection of the positioning sleeve and the fixing sleeve can be finished by bare hands, the problem of convenient connection under the condition of no outdoor tool bar is solved, the disconnection of the data line plug and the data line connector is prevented, and the connection stability of the working process is ensured.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.
FIG. 1 is a schematic view of the overall structure of a lightning strike protection device of the invention;
FIG. 2 is a schematic view 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 diagram of a communication protector;
Fig. 5 is a circuit configuration diagram of an antenna protector;
In the figure: 1. the meter box, 11, the perspective window, 12, the positioning baffle, 13, the mounting plate, 2, the quick-plug line collecting terminal, 3, the antenna system, 31, the antenna protector, 4, the communication protector, 5, the data line connector, 51, the connector body, 511, the contact pin, 52, the sleeve nut, 53, the connecting sleeve, 531, the positioning groove, 5311, the pressing plane, 532, the fixed end, 5321, the fan-shaped protruding block, 5322, the fan-shaped inserting groove, 533, the inserting hole, 54, the positioning sleeve, 541, the positioning end, 542, the buckling structure, 543, the handheld part, 55, the elastic sheet, 6, the connector protecting sleeve, 7, the protecting circuit breaker, 8, the cable protecting sleeve, 9 and the data line plug.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in figures 1-5, the lightning stroke protection device of the remote meter-collecting device provided by the invention is characterized in that all electric components and parts are arranged in the lightning stroke protection device to isolate corrosion and damage of severe environment, the lightning stroke protection device comprises a meter box 1 which is used for installing the meter-collecting device and can form a closed space, a perspective window 11 which is used for observing a data window of the meter-collecting device in the meter box 1, a positioning baffle 12 which is used for positioning the meter-collecting device, a mounting plate 13 which is fixed at the inner lower part of the meter box 1, a quick-plugging wire end 2 which is used for connecting the meter-collecting device with each cable, an antenna system 3 which is used for remote interaction of the meter-collecting device, a protection breaker 7 which is connected with a power supply cable of the meter-collecting device, a data wire connector 5 which is plugged with an external data wire plug 9 to transmit data, and a communication protector 4 which is positioned at the front end of the quick-plugging wire end 2 at the rear end of the data wire connector 5, wherein the communication protector 4 is electrically connected with the data wire connector 5, after the integrated structure is assembled through the connecting plate on the data line connector 5, or the integrated structure is formed through any other modularized connecting mode, the integrated circuit is connected to the mounting plate 13 and fixed on the mounting plate 13, the fast-inserting integrated line terminal 2 and the protection circuit breaker 7 are both fixed on the mounting plate 13, the antenna system 3, the protection circuit breaker 7 and the communication protector 4 are electrically connected with the integrated meter through the fast-inserting integrated line terminal 2, the fast-inserting integrated line terminal 2 uses the commercially available STTB.5 fast-inserting end, wherein the communication protector 4 comprises a piezoresistor protection circuit and a TVS tube protection circuit which are sequentially connected in series, and a common mode inductor which is connected with the piezoresistor protection circuit and the TVS tube protection circuit, the piezoresistor protection circuit can absorb most of energy, the TVS tube protection circuit can absorb residual surge energy, and multiple protections can prevent damage of lightning high voltage to a subsequent circuit;
After the data line connector 5 is connected with the pin 511 of the external data line plug 9, a certain degree of stress capability is required to be provided at the connector to prevent the data line from being disconnected by external force, the data line connector 5 comprises a connector body 51, a fixing sleeve and a positioning sleeve 54 connected with the connector body 51, the positioning sleeve 54 is two semicircular cylinders buckled and connected through a buckling structure 542, the buckling structure 542 of the positioning sleeve 54 is a hard plastic product, the buckling structure 542 of the positioning sleeve 54 can be a bump and a groove matched with each other on the buckling section, as shown in fig. 2, the extending end is inserted into a slot, the extending end and the slot section are provided with a bulge and a groove, the end part 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 an outer circular surface protruding step, the free end of the fixing sleeve is a fixing end 532 with an inner hole protruding step, the positioning end 541 and the fixing end 532 are provided with a fan-shaped slot 5322 and a fan-shaped convex block 5321 which are distributed in a ring shape, the fan-shaped convex block 5322 of the positioning end 541 is matched with the fan-shaped slot 5322 of the fixing end 532, the positioning sleeve is further provided with a positioning groove 531 positioned at the rear end of the buckling section, the positioning sleeve 531 is provided with a positioning groove 531 positioned at the end of the fixing end, the positioning end of the fixing end is inserted into the fan-shaped convex block 5355, the positioning sleeve is pressed into the fan-shaped end 541 by the positioning sleeve 541 by the fixing end 541, and the positioning sleeve is held by the positioning sleeve 541, and the positioning end 541 is prevented from being inserted into the fan-shaped end 541 by the elastic end portion of the positioning sleeve.
The data line connector 5 and the communication protector 4 of the lightning stroke protection device are fixedly combined into a module and then connected into a circuit, the module is fixed on the mounting plate 13, the connection stability is good, the piezoresistor protection circuit and the TVS tube protection circuit of the communication protector 4 have triple protection, the capability of protecting common-mode voltage and the capability of protecting differential mode voltage, the conduction disturbance caused by a power supply can be restrained, the safety reliability of the centralized meter-reading device is greatly enhanced, the surge protection requirements of the centralized meter-reading device under various lightning stroke conditions can be met, the positioning sleeve 54 and the fixing sleeve arranged on the data line connector 5 can be connected with the data line plug 9 by bare hands, the connection of the positioning sleeve 54 and the data line plug 9 and the connection of the positioning sleeve 54 and the fixing sleeve are realized, the convenient connection under the condition of a field tool bar is solved, the disconnection of the data line plug 9 and the data line connector 5 is prevented, and the connection stability of 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, the first-stage varistor MOV1 is bridged between two poles of a data communication end, two stages of a communication power supply end are connected through the varistor protection circuit, the TVS tube protection circuit is bridged between two poles of the communication power supply end, the varistor protection circuit comprises a second-stage first varistor MOV2, a semiconductor discharge tube TSS1 and a second-stage second varistor MOV3 which are connected in series, the 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 respectively bridged with a common-mode inductor L in parallel, the varistor protection circuit and the TVS tube protection circuit protect the TX end and the RX end of the data communication end, and belongs to a full duplex mode, the common-mode inductor L is positioned between the varistor protection circuit and the semiconductor discharge tube protection circuit to play a delay role, so that the varistor protection circuit can be started preferentially, and conduction disturbance energy can be reduced simultaneously; according to the instrument parameters of the meter reading device, the first-stage piezoresistor MOV1 is a 20D221K type piezoresistor, the second-stage first piezoresistor MOV2 and the second-stage second piezoresistor MOV3 are 10D221 type piezoresistors, and the semiconductor discharge tube TSS1 is a P3500SA type discharge tube.
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-sleeved 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, and 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, so that the reliability and stability of the plugging can be improved.
As a further technical scheme, an antenna hole and an antenna slot extending from the lower end of the fast-insertion collector terminal 2 to the antenna hole are arranged in the meter box 1, an antenna of the antenna system 3 is connected with the antenna protector 31 and then led out of the meter box 1 from the antenna hole, the antenna protector 31 is fixed on the mounting plate 13, as shown in fig. 5, the antenna protector 31 is connected with the antenna by a plurality of GDTs and ESD in parallel, wherein the GDT is selected from SPA090F type, the ESD is selected from TUSD FB type, when the interelectrode voltage is sufficiently large, the interelectrode gap breaks down the discharge, the response time is generally less than 10ms, the antenna protector 31 is converted into a conductive condition from the original insulation condition, similar to short circuit, the high voltage is conducted with the ground, and the voltage kept between the north and south under the conductive condition is very low, usually 20-50V, so that a subsequent circuit can be protected.
As a further technical scheme, be fixed with L shape cable sheath 8 on the outer wall surface of table case 1 lower extreme through flange joint, the last port that cable sheath 8 and table case 1 are connected is equipped with sealed the pad for protection cable entry does not take place the damage, simultaneously, guarantees the confined 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, is convenient for in each cable access box.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (4)
1. A lightning stroke protection device of a remote centralized meter reading device is characterized in that: the meter box is used for installing the meter box, a positioning baffle plate is used for positioning the meter box, a mounting plate is fixed below the meter box, a quick-plug collecting terminal is used for connecting the meter box with each cable, an antenna system is used for remotely interacting with the meter box, a protection circuit breaker is connected with a power supply cable of the meter box, a data line connector is spliced with an external data line plug to transmit data, and a communication protector is positioned at the front end of the quick-plug collecting terminal at the rear end of the data line connector, the communication protector is electrically connected with the data line connector and is assembled into an integral structure and is mounted on the mounting plate, the quick-plug collecting terminal and the protection circuit breaker are all fixed on the mounting plate, the antenna system, the protection circuit breaker and the communication protector are electrically connected with the meter box through the quick-plug collecting terminal, and the communication protector comprise a piezoresistor protection circuit and a TVS tube protection circuit which are sequentially cascaded, and a common mode inductor which is connected with the piezoresistor protection circuit and the TVS tube protection circuit;
The data line connector is connected with an external data line plug pin and comprises a connector body, a fixing sleeve and a positioning sleeve, wherein the fixing sleeve and the positioning sleeve are connected with the connector body in a buckled mode, the positioning sleeve is two semicircular cylinders which are connected with each other 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 step protrusion, the free end of the fixing sleeve is a fixing end part with a step protrusion in an inner hole, the positioning end part and the fixing end part are provided with fan-shaped slots and fan-shaped protruding blocks which are annularly distributed, the fan-shaped protruding blocks of the positioning end part are matched with the fan-shaped slots of the fixing end part, a positioning groove connected with the fixing end part is further formed in the fixing sleeve, an annular elastic piece is arranged in the positioning groove, the fan-shaped protruding blocks of the positioning end part are inserted into the fan-shaped slots of the fixing end part, and the elastic piece elastically compresses the end surface of the positioning end part to enable the fan-shaped protruding blocks of the positioning end part to be seated on the fan-shaped protruding blocks of the fixing end part;
The voltage dependent resistor protection circuit comprises a first voltage dependent resistor MOV1, wherein the first voltage dependent resistor MOV1 is connected between two poles of a data communication end in a bridging manner, the TVS tube protection circuit is connected between two poles of a communication power supply end in a bridging manner, the voltage dependent resistor protection circuit comprises a second first voltage dependent resistor MOV2, a semiconductor discharge tube TSS1 and a second voltage dependent resistor MOV3 which are connected in series, and two poles of the data communication end are also connected with the TVS tube protection circuit;
the fixed sleeve comprises a sleeve nut sleeved on the connector body in a pressing mode and a connecting sleeve connected with the sleeve nut in a threaded mode, and the positioning groove and the fixed end portion are located on the connecting sleeve.
2. The lightning strike protection device of a remote meter reading machine according to claim 1, wherein: the first-stage piezoresistor MOV1 is a 20D221K piezoresistor, the second-stage first piezoresistor MOV2 and the second-stage second piezoresistor MOV3 are 10D221 piezoresistors, and the semiconductor discharge tube TSS1 is a P3500SA discharge tube.
3. The lightning strike protection device of a remote meter reading machine according to claim 1, wherein: the meter box is internally provided with an antenna hole and an antenna groove extending to the antenna hole from the lower end of the fast-inserting collecting terminal, an antenna of the antenna system is led out of the meter box from the antenna hole after being connected into the antenna protector, the antenna protector is fixed on the mounting plate, and the antenna protector comprises a plurality of GDT and ESD connected in parallel.
4. A lightning strike protection device for a remote meter reading machine according to claim 3, wherein: 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 the upper port of the cable sheath, which is connected with the meter box, and a plurality of cross holes for penetrating cables are formed in the sealing gasket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911123987.5A CN110718802B (en) | 2019-11-15 | 2019-11-15 | Lightning stroke protection device of remote centralized meter reading device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911123987.5A CN110718802B (en) | 2019-11-15 | 2019-11-15 | Lightning stroke protection device of remote centralized meter reading device |
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| CN110718802A CN110718802A (en) | 2020-01-21 |
| CN110718802B true CN110718802B (en) | 2024-08-27 |
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| CN201911123987.5A Active CN110718802B (en) | 2019-11-15 | 2019-11-15 | Lightning stroke protection device of remote centralized meter reading device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN210985039U (en) * | 2019-11-15 | 2020-07-10 | 天津华春智慧能源科技发展有限公司 | Lightning stroke protection device of remote centralized meter reading device |
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| CN202586322U (en) * | 2012-05-10 | 2012-12-05 | 深圳茂硕电源科技股份有限公司 | Tripping type lightning protection circuit |
| CN106783431B (en) * | 2012-11-12 | 2018-09-07 | 上海电科电器科技有限公司 | Surge protector with short circuit current defencive function |
| CN104253426A (en) * | 2014-09-03 | 2014-12-31 | 烽火通信科技股份有限公司 | Lightning protection circuit and lightning protection method for direct-current power supply port of communication equipment |
| CN207801031U (en) * | 2018-02-06 | 2018-08-31 | 宁夏中科天际防雷研究院有限公司 | A kind of heritage buildings surface waterproofing Thunder preventing socket |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN210985039U (en) * | 2019-11-15 | 2020-07-10 | 天津华春智慧能源科技发展有限公司 | Lightning stroke protection device of remote centralized meter reading device |
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