CN203103937U - Multifunctional solid decoupler - Google Patents

Multifunctional solid decoupler Download PDF

Info

Publication number
CN203103937U
CN203103937U CN 201220281136 CN201220281136U CN203103937U CN 203103937 U CN203103937 U CN 203103937U CN 201220281136 CN201220281136 CN 201220281136 CN 201220281136 U CN201220281136 U CN 201220281136U CN 203103937 U CN203103937 U CN 203103937U
Authority
CN
China
Prior art keywords
current
thyristor
unit
pipeline
multifunctional solid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN 201220281136
Other languages
Chinese (zh)
Inventor
戴碧辉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nanjing Lingling Electric Co., Ltd.
Original Assignee
SHAANXI LINELY ELECTRIC CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SHAANXI LINELY ELECTRIC CO Ltd filed Critical SHAANXI LINELY ELECTRIC CO Ltd
Priority to CN 201220281136 priority Critical patent/CN203103937U/en
Application granted granted Critical
Publication of CN203103937U publication Critical patent/CN203103937U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

The utility model relates to a multifunctional solid decoupler. In order to reach objects mentioned above, the multifunctional solid decoupler adopts the following technical scheme that the multifunctional solid decoupler is composed of an AC/DC clamping unit, a failure current control unit and a control trigger unit; the AC/DC clamping unit is connected with the failure current control unit in parallel and then is connected with the control trigger unit; the failure current control unit is connected with the control trigger unit; the AC/DC clamping unit is composed of two ways of thyristors; the failure current control unit is composed of one way of the thyristor, and the control trigger unit can control the on-off of the thyristors; and a spark gap and a surge protective device (SPD) form a two-staged lightning protection system. The beneficial effects of the multifunctional solid decoupler are that the multifunctional solid decoupler has clamping voltage lower than that of the SPD; the multifunctional solid decoupler has a function of protecting a pipeline from AC/DC interference and AC/DC corrosion; the multifunctional solid decoupler has a heavy-current drainage function of preventing a pipeline from being hit by direct lightning strike; and the multifunctional solid decoupler has an electric drainage function of preventing resistive coupling, capacitive coupling and inductive coupling of thunder and electromagnetic interference.

Description

A kind of multifunctional solid decoupling device
Technical field:
The utility model relates to a kind of pipeline cathode protection system, relates in particular to a kind of multifunctional solid decoupling device.
Background technology:
Along with modern industry and science and technology development, corrosion science and antiseptic project technology shared status in national economy is more and more important.Cathodic protection has become the important branch technology in the antiseptic project technology; the cathodic protection effect reaches under the condition of electric insulation in protected structure; possess the highest protection efficient and the most balanced protection effect; that is to say that all protected metal structures are stopped to occur being electrically connected with the external metallization structural environment.The utility model multifunctional solid decoupling device can be when providing interchange ground connection, and isolated DC channel is to protect the normal operation of cloudy insurance system.
At present, domestic a lot of decoupling device products are used is that diode is connected and regulated threshold voltage ranges, because the conducting voltage of diode has scope, so can not control threshold voltage accurately; Just by the gas discharge tube lightning current of releasing, because there is the afterflow phenomenon in gas discharge tube, the lightning current of can not effectively releasing in the short time causes the pipeline current potential to raise to existing decoupling device, is unfavorable for the protection of pipeline; Existing decoupling device does not possess the ability of the fault current of releasing.
Existing decoupling device does not possess anticorrosion, moistureproof, explosion-proof function, and they can not directly be installed on the face of land or underground, must install by processing corresponding housing, causes construction complicated, and cost increases.
The utility model content:
Utility model purpose:, have the protection pipeline and avoid the function that alternating current-direct current disturbs and alternating current-direct current corrodes for a kind of low clamp voltage that has is provided; Has the big electric current current drainage function that the protection direct lightning strike hits pipeline; A kind of multifunctional solid decoupling device of current drainage function with resistive coupling, capacitive couplings, inductive couplings of protection thunder and lightning electromagnetic interference.
In order to reach as above purpose, the utility model is taked following technical scheme: be made up of alternating current-direct current clamper unit, fault current control unit and control trigger element, be connected with the control trigger element after alternating current-direct current clamper unit and the parallel connection of fault current control unit, the fault current control unit is connected with the control trigger element, and alternating current-direct current clamper unit constitutes for the two-way thyristor; The fault current control unit is made of one road thyristor, and the control trigger element can be controlled cut-offfing of thyristor; Wherein fault current control unit and control trigger element are made of Hall element, Hall element control thyristor; Spark gap and surge protector are formed the two-stage lightning-protection system.
The further technical scheme of the utility model is: described alternating current-direct current clamper unit constitutes for the two-way thyristor, inverse parallel is between pipeline and ground, in order to the clamp voltage of control pipeline with ground, judge whether to trigger the conducting of thyristor by the control module collection pipeline and the voltage on ground, by regulating the trigger angle of thyristor, can regulate the angle of flow of thyristor accurately, make the current potential of pipeline and the earth maintain normal current potential accurately.
The further technical scheme of the utility model is: the described fault current control unit conducting lasting electric current of releasing, constitute by one road thyristor, its function is as follows, trigger the conducting of thyristor by the size of gathering ground line current, the size of current of gathering on the earth connection by Hall element triggers cut-offfing of this road thyristor, make its moment conducting with pipeline and big ground short circuit, with the big electric current of releasing.
The further technical scheme of the utility model is: described control trigger element function is as follows, can set a current value, when the pipeline electric current sharply increases and above the current value of setting, the control trigger element makes pipeline rapidly reach the big electric current of releasing with the earth connection rapidly with the thyristor triggering and conducting.
The further technical scheme of the utility model is: also comprise the two-stage lightning protection unit, be connected between the earth and the pipeline.
The further technical scheme of the utility model is: between the described two-stage lightning protection unit instantaneous switch unit is arranged.
The further technical scheme of the utility model is: described two-stage lightning protection unit is made up of spark gap and surge protector, controls the sequence of movement of spark gap and surge protector, release thunder and lightning transient state overcurrent and over-voltage by two decouplers.
Adopt as above the utility model of technical scheme, have following beneficial effect: have the clamp voltage lower than SPD; Have the protection pipeline and avoid the function that alternating current-direct current disturbs and alternating current-direct current corrodes; Has the big electric current current drainage function that the protection direct lightning strike hits pipeline; Have resistive coupling, the capacitive couplings of protection thunder and lightning electromagnetic interference, the current drainage function of inductive couplings.
The utility model can satisfy the requirement of pipe protection fully; can realize the protection of threshold voltage clamper, lightning surge current protection, AC steady-state current and AC fault current; it is the solid-state decoupling device of a kind of novel multifunctional; be a kind of design of novel concept, well solved more existing solid-state decoupling device technical elements and the deficiency of installing and using the aspect from principle and practicality aspect.
Description of drawings:
In order to further specify the utility model, further describe below in conjunction with accompanying drawing:
Accompanying drawing is the structural representation of utility model:
Embodiment:
Below in conjunction with accompanying drawing embodiment of the present utility model is described, embodiment does not constitute restriction of the present utility model:
Spark gap and surge protector are formed two-stage lightning-protection system, effectively release thunder and lightning transient state overcurrent and over-voltage.
Alternating current-direct current clamper unit constitutes for the two-way thyristor, inverse parallel is between pipeline and ground, judge whether to trigger the conducting of thyristor by the control module Hall element collection pipeline and the voltage on ground, because the trigger angle of thyristor is adjustable, so control module can be regulated the angle of flow of thyristor accurately, make the current potential of pipeline and the earth maintain normal current potential accurately; The fault current control unit is made of one road thyristor, and the size of current of gathering on the earth connection by Hall element triggers cut-offfing of this road thyristor, makes its moment conducting with pipeline and big ground short circuit, to reach the purpose of the big electric current of releasing; Spark gap and surge protector are formed the two-stage lightning-protection system, control the sequence of movement of spark gap and surge protector by two decouplers, and effectively release thunder and lightning transient state overcurrent and over-voltage have solved the harm to pipeline of thunder and lightning and high-tension line.
The two-way lightning protection unit, by the two-stage lightning protection unit, the lightning current of can demoting rapidly is to the harm of pipeline, and its most important advantage is, the residual voltage that lightning current produces can be dropped to minimumly by the two-stage lightning-protection system, and the protection pipeline is avoided the harm of thunder and lightning.
More than show and described basic principle of the present utility model, principal character and advantage of the present utility model.Those skilled in the art should understand the utility model and not be restricted to the described embodiments; that describes in the foregoing description and the specification just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in the claimed scope.

Claims (7)

1. multifunctional solid decoupling device, it is characterized in that: form by alternating current-direct current clamper unit, fault current control unit and control trigger element, be connected with the control trigger element after alternating current-direct current clamper unit and the parallel connection of fault current control unit, the fault current control unit is connected with the control trigger element, and alternating current-direct current clamper unit constitutes for the two-way thyristor; The fault current control unit is made of one road thyristor, and the control trigger element can be controlled cut-offfing of thyristor; Wherein fault current control unit and control trigger element are made of Hall element, Hall element control thyristor; Spark gap and surge protector are formed the two-stage lightning-protection system.
2. a kind of multifunctional solid decoupling device as claimed in claim 1, it is characterized in that: described alternating current-direct current clamper unit constitutes for the two-way thyristor, inverse parallel is between pipeline and ground, in order to the clamp voltage of control pipeline with ground, judge whether to trigger the conducting of thyristor by the control module collection pipeline and the voltage on ground, by regulating the trigger angle of thyristor, can regulate the angle of flow of thyristor accurately, make the current potential of pipeline and the earth maintain normal current potential accurately.
3. a kind of multifunctional solid decoupling device as claimed in claim 1, it is characterized in that: the described fault current control unit conducting lasting electric current of releasing, constitute by one road thyristor, its function is as follows, trigger the conducting of thyristor by the size of gathering ground line current, the size of current of gathering on the earth connection by Hall element triggers cut-offfing of this road thyristor, makes its moment conducting with pipeline and big ground short circuit, with the big electric current of releasing.
4. a kind of multifunctional solid decoupling device as claimed in claim 1, it is characterized in that: described control trigger element function is as follows, can set a current value, when the pipeline electric current sharply increases and above the current value of setting, the control trigger element makes pipeline rapidly reach the big electric current of releasing with the earth connection rapidly with the thyristor triggering and conducting.
5. a kind of multifunctional solid decoupling device as claimed in claim 1 is characterized in that: also comprise the two-stage lightning protection unit, be connected between the earth and the pipeline.
6. a kind of multifunctional solid decoupling device as claimed in claim 5 is characterized in that: between the described two-stage lightning protection unit instantaneous switch unit is arranged.
7. a kind of multifunctional solid decoupling device as claimed in claim 5; it is characterized in that: described two-stage lightning protection unit is made up of spark gap and surge protector; control the sequence of movement of spark gap and surge protector, release thunder and lightning transient state overcurrent and over-voltage by two decouplers.
CN 201220281136 2012-06-14 2012-06-14 Multifunctional solid decoupler Expired - Fee Related CN203103937U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220281136 CN203103937U (en) 2012-06-14 2012-06-14 Multifunctional solid decoupler

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220281136 CN203103937U (en) 2012-06-14 2012-06-14 Multifunctional solid decoupler

Publications (1)

Publication Number Publication Date
CN203103937U true CN203103937U (en) 2013-07-31

Family

ID=48855314

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220281136 Expired - Fee Related CN203103937U (en) 2012-06-14 2012-06-14 Multifunctional solid decoupler

Country Status (1)

Country Link
CN (1) CN203103937U (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104852349A (en) * 2015-04-20 2015-08-19 南方电网科学研究院有限责任公司 Overvoltage protective device used for natural gas pipeline system
CN105932441A (en) * 2016-06-22 2016-09-07 苏州热工研究院有限公司 Device for preventing galvanic corrosion of dissimilar metal equipment/part
CN106526303A (en) * 2016-10-27 2017-03-22 中国西电电气股份有限公司 Volt-ampere characteristic test device and method of solid-state decoupling device
CN107863767A (en) * 2016-09-22 2018-03-30 中国石油天然气股份有限公司 Oil-gas pipeline valve chamber earth protective device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104852349A (en) * 2015-04-20 2015-08-19 南方电网科学研究院有限责任公司 Overvoltage protective device used for natural gas pipeline system
CN105932441A (en) * 2016-06-22 2016-09-07 苏州热工研究院有限公司 Device for preventing galvanic corrosion of dissimilar metal equipment/part
CN107863767A (en) * 2016-09-22 2018-03-30 中国石油天然气股份有限公司 Oil-gas pipeline valve chamber earth protective device
CN107863767B (en) * 2016-09-22 2019-05-07 中国石油天然气股份有限公司 Oil-gas pipeline valve chamber earth protective device
CN106526303A (en) * 2016-10-27 2017-03-22 中国西电电气股份有限公司 Volt-ampere characteristic test device and method of solid-state decoupling device
CN106526303B (en) * 2016-10-27 2019-11-01 中国西电电气股份有限公司 A kind of the C-V characteristic test device and method of solid decoupling device

Similar Documents

Publication Publication Date Title
CN201636674U (en) Lightning protection led street lamp
CN203103937U (en) Multifunctional solid decoupler
CN204190381U (en) A kind of antisurge interference prevention device based on power meter reading system
CN203415971U (en) Anti-overvoltage surge protection control circuit designed based on field-effect transistor
CN201975773U (en) Over-voltage protection circuit of switching power-supply power-frequency filter capacitor
CN203617704U (en) Equipotential cutoff anti-thunder multifunctional power-source-protecting circuit
CN204012686U (en) A kind of serial interface circuit with lightning protection function
CN202997329U (en) Lightning-protection power distribution cabinet
CN102931592A (en) Lightning-protection power distribution cabinet
CN203367747U (en) High-efficient safe lightning protection system
CN204668931U (en) A kind of solid decoupling device and circuit
CN201766357U (en) Lightning protection device of electric-heating deicing system of aircraft pitot tube
CN202872329U (en) Circuit breaker with overvoltage protection function
CN206226006U (en) A kind of photovoltaic lightningproof circuit
CN202340113U (en) Lightning protection device for transformer
CN103762577A (en) Communication line thunder prevention device
CN201048288Y (en) Simple earthing 220V 2-port 3-module power supply surge protector
CN204030510U (en) A kind of novel 10kV wired foil zinc oxide arrester
CN201075680Y (en) Apparatus for overvoltage protection
CN206432708U (en) Surge Protector wiring construction in photovoltaic system
CN203562771U (en) Inductive thunder prevention device used for long distance pipeline valve chamber equipment
CN204760158U (en) Lightnig protector
CN205901280U (en) Explosion -proof type power surge protector
CN205335834U (en) Circuit is hit in power lightning protection
CN204732245U (en) A kind of lightning arrester

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
DD01 Delivery of document by public notice

Addressee: Dai Bihui

Document name: Notification of Passing Examination on Formalities

DD01 Delivery of document by public notice
TR01 Transfer of patent right

Effective date of registration: 20181218

Address after: 211215 No. 368 zhe Ning Road, zhe Tang Town, Lishui District, Nanjing, Jiangsu

Patentee after: Nanjing Lingling Electric Co., Ltd.

Address before: 710075 Room 301, Instrument Building 81 Jinye Road, Xi'an High-tech Zone, Shaanxi Province

Patentee before: Shaanxi Linely Electric Co., Ltd.

TR01 Transfer of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130731

Termination date: 20200614

CF01 Termination of patent right due to non-payment of annual fee