CN201374558Y - Novel surge protective device - Google Patents
Novel surge protective device Download PDFInfo
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- CN201374558Y CN201374558Y CN200920095453U CN200920095453U CN201374558Y CN 201374558 Y CN201374558 Y CN 201374558Y CN 200920095453 U CN200920095453 U CN 200920095453U CN 200920095453 U CN200920095453 U CN 200920095453U CN 201374558 Y CN201374558 Y CN 201374558Y
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- 230000001681 protective effect Effects 0.000 title claims abstract description 75
- 238000004891 communication Methods 0.000 claims abstract description 5
- 238000005259 measurement Methods 0.000 claims description 42
- 230000004224 protection Effects 0.000 claims description 39
- 230000001012 protector Effects 0.000 claims description 19
- 230000009471 action Effects 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 6
- 238000012544 monitoring process Methods 0.000 claims description 5
- 230000005672 electromagnetic field Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 2
- 230000015556 catabolic process Effects 0.000 abstract 1
- 238000006731 degradation reaction Methods 0.000 abstract 1
- 238000011897 real-time detection Methods 0.000 abstract 1
- 230000006866 deterioration Effects 0.000 description 8
- 230000008054 signal transmission Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 229910001092 metal group alloy Inorganic materials 0.000 description 3
- 230000005684 electric field Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 230000009429 distress Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000009131 signaling function Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model relates to a novel surge protective device which essentially consists of a surge protective device unit (1), a sensor unit (2), a measure and control unit (3) and a relay unit (4), wherein the relay unit (4) is taken as a standby protective device and serially connected with the surge protective device unit (1) in a surge protective loop; the measure and control unit (3) judges whether the surge protective device is short-circuit or degraded and damaged according to the current of the sensor unit (2) to the surge protective device unit (1) or the real-time detection data of other physical quantity; when the surge protective device occurs short circuit or degradation and damage, the relay unit (4) is controlled so that the surge protective device unit (1) can be separated from a line in time, and a communication unit is alternatively added or a communication function can be increased in the measure and control unit (3), thus transferring one or a plurality of information among closing or disconnection information of a relay, status information of the surge protective device and appeared surge current information to display locally or remotely.
Description
Technical field
The present invention relates to a kind of novel surge protective device, belong to the surge guard technology field of electronic electric equipment.
Technical background
The line surge that the line surge of thunder and lightning and initiation thereof and other reason cause is to cause the major reason that electric/electronic device is aging and damage.The installation Surge Protector is one of important measures of lightning protection on the metallic circuits such as the power line of electronic equipment, holding wire and control line being connected in.In this technical field, a major issue that exists is at present: Surge Protector is in protection equipment, deterioration can take place gradually until thorough damage in the device of himself, or directly damages under excessive surge impact, or proximity switch type surge protective device produces afterflow; For power source surge protector, its damage or the phenomenon that causes damage have short circuit (comprise afterflow, below omit) and leakage current increase to cause to generate heat two kinds; For the signal Surge Protector, the phenomenon of its damage is generally Surge Protector to two kinds of the impedance increasing of signal transmission and surge protective device short circuits.Which kind of situation no matter occurs, all must in time surge protective device be spun off from circuit, otherwise phenomenons such as burning, switch trip power failure, signal transmission fault will occur.
Addressing the above problem existing technical method at present has two kinds, and the one, thermal release device is set, the 2nd, series connection circuit breaker or fuse on surge protective device.What is called is provided with thermal release device, generally take the metal alloy that but welding low temperature melts on surge protective device at present, and connection spring mechanism, the electric current increase causes adstante febre on surge protective device, the low-temperature metal alloy melts, the spring mechanism action spins off surge protective device from circuit.So-called series connection circuit breaker or fuse are to expect when short circuit appears in surge protective device, circuit breaker or fuse tripping or fusing, thus surge protective device is spun off from circuit.
Still there are the following problems for above-mentioned solution:
Problem is 1.: the damage that thermal release device can not solve the signal Surge Protector is set breaks away from problem, this is because the signal circuit electric current is very little, generally can not cause metal alloy to melt.Problem is 2.: for power source surge protector, circuit breaker or fuse are set connect with surge protective device, exist with the requirement of power distribution protection and conflict.This is because described circuit breaker or fuse should bear identical or bigger surge impact with the surge protective device that is cascaded with it at least, for reaching this point, just must select circuit breaker or fuse than the desired bigger rated current of power distribution protection for use.But after the configuration, in the time the Surge Protector short circuit can occurring again, circuit breaker or fuse that itself is connected do not disconnect like this, and the situation that the upper level circuit breaker disconnects can not satisfy the requirement of the selectivity cooperation of power distribution protection; Otherwise can only strengthen the rated current of circuit breaker layer by layer, cause distribution system owing to preventing SPD the short circuit whole unreasonable and waste that becomes.Problem is 3.: for the signal Surge Protector, if break away from circuit during the surge protective device short circuit fuse or circuit breaker are set, also can occur and 2. described similar situation.Moreover the voltage of signal circuit is low, electric current is very little, requires fuse to disconnect when the surge protective device short circuit, can not disconnect when powerful surge impact, does not still have the product (fuse or circuit breaker) that meets this requirement at present.
Change an angle in fact and say, to the circuit breaker of the above-mentioned use of connecting with surge protective device or the ideal requirement of fuse be: will disconnect at once even very little power current or signal code flow through also, very large surge current then can not disconnect.Obviously, owing to there is not better technical scheme, generally adopting fuse or circuit breaker in the industry of surge protection at present is caving-in bash as the short-circuit protection of Surge Protector.
Summary of the invention
In order effectively to overcome the above problems, the present invention proposes a kind of novel surge protective device.
The purpose of this invention is to provide a kind of novel surge protective device; can detect in real time in physical quantitys such as the temperature that electric current, surge protective device produced, infrared ray, discharge arc light and space electric field or the magnetic field passed through on the surge protective device or these physical quantitys one or more; with judge surge protective device whether short circuit or deterioration damage, thereby be short-circuited or deterioration in time spins off it from circuit when damaging at surge protective device.
The present invention realizes by the following technical solutions: novel surge protective device of the present invention, mainly form by surge protective device unit (1), sensor unit (2), measurement and control unit (3), relay unit (4), the major loop of relay unit (4) is connected with surge protective device unit (1), has constituted the surge protection loop; The control section of relay unit (4), sensor unit (2) are connected with measurement and control unit (3) respectively, have constituted monitoring loop; Sensor unit (2) detects the message transmission of surge protective device unit (1) and gives measurement and control unit (3), measurement and control unit (3) control relay unit (4) action, and relay unit (4) action makes surge protective device unit (1) break away from circuit.
Relay unit (4) adopts the strong relay of tolerance surge impact ability, and series connection is in the line as the short circuit of surge protective device unit (1) and the protective device of inefficacy.Selected relay generally should be vacuum relay, also can select other strong type relay of tolerance surge impact ability for use.Sensor unit (2) is made of one or more transducers, when sensor unit (2) is made of two or more transducer, exports multiple detection information jointly and offers measurement and control unit (3).Transducer is the device or the circuit of one or more physical quantitys in the temperature that can detect the electric current that passes through on the surge protective device, surge protective device, infrared ray, external electromagnetic field, the discharge arc light.Can one or more transducers be set according to the characteristics and the needs of dissimilar surge protective devices.It is a kind of for example for the switching mode Surge Protector current sensor only to be set; and two kinds of current sensor and temperature sensors can be set for the votage limit type Surge Protector; this be because the former generally can not resemble the surge protective device deterioration appears the latter, the leakage current increase causes the situation of heating, protect at short circuit and afterflow so current sensor can only be set.Certainly, also current sensor can only be set, and the deterioration heating problem can be solved by other thermal release device to the votage limit type Surge Protector.A measurement and control unit (3) can carry out observing and controlling to one or more surge protections loop, and can constitute a product with one or more surge protection loops that are made of sensor unit (2), relay unit (4) and Surge Protector unit (1) are common.Surge protective device unit (1), sensor unit (2), measurement and control unit (3), relay unit (4) can be installed in the same housing, the product of becoming one, also can distinguish or aggregate erection in different housings, constitute each functional module product of this product respectively.Can select to be provided with communication unit is connected with measurement and control unit (3); perhaps in measurement and control unit (3), increase communication function, in order to relay closes or disconnection information, Surge Protector state information, the surge current information that is occurred or one or more message transmission to the Local or Remote in them are shown.
The invention has the advantages that: adopt relay unit (4) and telemetry circuit, can effectively purposively control the conducting of surge protection loop and end, can protect Surge Protector short circuit or deterioration distress condition pointedly.By the check and analysis of measurement and control unit (3) to physical parameters such as the electric current of surge protective device unit (1), temperature, infrared ray, discharge arc light, electromagnetic fields, or relatively mutual and confirmation with multiple information, measurement and control unit (3) provides different control signals, thereby relay unit (4) is controlled, realized the through and off of the path that surge protective device is connected with circuit.Like this, with regard to efficiently solve Surge Protector fault noted earlier and short circuit break away from problem that the circuit technology exists at present 1., problem 2. with problem 3..
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is a schematic diagram of the present invention.
Fig. 2 is an embodiment of sensor unit, the schematic diagram of the sensor unit that is made of current sensor and temperature sensor.
Fig. 3 is one embodiment of the present of invention, is the schematic diagram of the novel power supply Surge Protector of a measurement and control unit and four surge protection module compositions.
Among the figure: 1, surge protective device unit, 2, sensor unit, 3, measurement and control unit; 4, relay unit, 5, current sensor, 6, temperature sensor; 7, binding post one, 8, binding post two, 9, signal transmission terminal; 10, power supply binding post; 11, shell, 12, control module, 13, surge protection module one; 14, the surge protection module two; 15, surge protection module three, 16, surge protection module four, 17, connector; 18, plastic casing; 19, vacuum relay, 20, piezo-resistance, 21, lead one; 22, lead two, 23 leads three.
Need to prove that in Fig. 3, surge protection module one (13), surge protection module two (14), surge protection module three (15), surge protection module four (16) are identical, and be too complicated for avoiding accompanying drawing, only identifies a module on the figure.
Embodiment
The concrete scheme of embodiment is as follows:
Novel surge protective device is provided with monitoring loop; monitoring loop is by sensor unit (2); measurement and control unit (3); relay unit (4) is formed by connecting; and be connected with surge protective device unit (1); the electric current of sensor unit (2) to passing through on the surge protective device; the temperature that surge protective device produced; infrared ray; in physical quantity such as discharge arc light and space electric field or magnetic field or these physical quantitys one or more detect in real time; and with detected above-mentioned message transmission to measurement and control unit (3); measurement and control unit (3) is handled detected above-mentioned information; be judged as that surge protective device is short-circuited or deterioration measurement and control unit (3) control relay unit (4) action when damaging; relay unit (4) just transfers off-state to from closure state, and surge protective device unit (1) is spun off from circuit.
As shown in Figure 1; the present invention adopts following measure to realize: surge protective device unit (1), sensor unit (2), measurement and control unit (3), relay unit (4) connect by lead; and be installed in the shell (11), relay unit (4) is connected in the surge protection loop with surge protective device unit (1).The surge protection loop is entered by binding post one (7), through relay unit (4), surge protective device unit (1), by binding post two (8) outputs.Measurement and control unit (3) is connected with signal transmission terminal (9), power supply binding post (10), realizes signal transmission and function of supplying power.
An embodiment of the sensor unit shown in the accompanying drawing 2, sensor unit (2) are made up of current sensor (5) and temperature sensor (6) in the present embodiment.Current sensor (5) is installed in the surge protection loop, and promptly relay unit (4) and surge protective device unit (1) is connected on the lead.Temperature sensor (6) is pressed close to be installed on the surge protective device unit (1).Current sensor (5) utilizes lead to link to each other with measurement and control unit (3) respectively with temperature sensor (6), is respectively measurement and control unit (3) detected electric current and temperature information are provided.
One embodiment of the present of invention shown in Figure 3, in the present embodiment, surge protective device is piezo-resistance (20), relay is vacuum relay (19), with both series connection, between is provided with current sensor (5), temperature sensor (6) is set pressing close to the piezo-resistance place, they with binding post one (7), binding post two (8), be connected lead and plastic casing (18) has constituted surge protection module one (13) jointly; Measurement and control unit (3) and signal transmission terminal (9), power supply binding post (10) and be connected lead and be loaded on and constituted control module (12) in the same shell; Adopt lead one (21) to be connected between vacuum relay (19) and the measurement and control unit (3), adopt lead two (22) to be connected between current sensor (5) and the measurement and control unit (3), be connected with lead three (23) between the control end of vacuum relay (19) and the measurement and control unit (3).
Surge protection module one (13) is when coming into operation; the circuit that will carry out surge protection is connected on the binding post one (7); an other line in ground wire or protected loop is connected to binding post two (8); binding post two (8) is if connect ground wire; surge protection between protected circuit and the ground wire then is provided; binding post two (8) then provides surge protection between two lines of loop if connect an other line in protected loop.
When surge appears in circuit, surge current is along being flow through by binding post one (7), vacuum relay (19), piezo-resistance (20), binding post two (8), current sensor (5) detects surge current and this message transmission is arrived measurement and control unit (3) simultaneously, big, the higher characteristic of frequency of compole short (being generally in the hundreds of microsecond), peak value when measurement and control unit (3) can be according to detected surge current, be judged as surge current, measurement and control unit (3) powers up for vacuum relay (19), relay is failure to actuate, and still keeps on-state.When piezo-resistance (20) fault, when leakage current or short circuit current appear in circuit, longer duration, frequency are power frequency, detected electric current can be judged as leakage current or short circuit current, at this moment measurement and control unit (3) powers up to vacuum relay (19) control end by lead three (21) and powers up, the relay contact action, relay disconnects, and the piezo-resistance (20) that breaks down is spun off from circuit.
Temperature sensor (6) detects the temperature of piezo-resistance (20), makes one of the criterion that whether disconnects vacuum relay (19) or criterion as measurement and control unit (3).For example, deterioration appears in piezo-resistance (20), when leakage current increases, because electric current is less, may have only a few milliampere to tens milliamperes, current sensor (5) may detect inaccurate, and at this moment temperature sensor (6) can detect surge protective device because leakage current increases the long period heating that is caused, measurement and control unit (3) powers up for vacuum relay (19) control end, disconnects relay.
Measurement and control unit is provided with telecommunication circuit in (3), make the piezo-resistance (20) that measurement and control unit (3) can be measured with closed and disconnected information, the current sensor (5) of vacuum relay (19) go up the temperature information that the current information, the temperature sensor that pass through detect piezo-resistance (20), by signal transmission terminal (9), be transferred in the outer monitoring system with bus or non-bus form.
Surge protection module two (14), surge protection module three (15), surge protection module four (16) are almost completely identical with surge protection module one (13); they are also the same with surge protection module one (13) with the connected mode of the measurement and control unit (3) of control module (12); its operation principle is also identical, repeats no more here.
Control module (12), surge protection module one (13), gush protection module two (14), surge protection module three (15), surge protection module four (16) and can use connector (17) to be coupled as one; can adopt riveted joint mode or snap fit, become an integral product instant packed, that transport and use.
Claims (7)
1, a kind of novel surge protective device, mainly form by surge protective device unit (1), sensor unit (2), measurement and control unit (3), relay unit (4), it is characterized in that: the major loop of relay unit (4) is connected with surge protective device unit (1), has constituted the surge protection loop; The control section of relay unit (4), sensor unit (2) are connected with measurement and control unit (3) respectively, constituted monitoring loop, sensor unit (2) detects the message transmission of surge protective device unit (1) and gives measurement and control unit (3), measurement and control unit (3) control relay unit (4) action, relay unit (4) action makes surge protective device unit (1) break away from circuit.
2, novel surge protective device according to claim 1 is characterized in that: relay unit (4) adopts the strong vacuum relay of tolerance surge impact ability.
3, novel surge protective device according to claim 1 is characterized in that: sensor unit (2) is made of at least a transducer, and its output detection information is given measurement and control unit (3).
4, novel surge protective device according to claim 3 is characterized in that: transducer is the device or the circuit of physical quantitys such as the temperature that is used for detecting the electric current that passes through on the surge protective device, surge protective device, infrared ray, external electromagnetic field, discharge arc light.
5, novel surge protective device according to claim 1 is characterized in that: a measurement and control unit (3) connects a plurality of surge protections loop and carries out observing and controlling.
6, novel surge protective device according to claim 1; it is characterized in that: surge protective device unit (1), sensor unit (2), measurement and control unit (3), relay unit (4) are installed in the same housing; the product of becoming one; or be installed in the different housings, be combined into product with modular form.。
7, novel surge protective device according to claim 1; it is characterized in that: measurement and control unit (3) is connected with communication unit, and it shows relay closes or disconnection information, Surge Protector state information, the surge current information that is occurred or one or more message transmission to the Local or Remote in them.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920095453U CN201374558Y (en) | 2009-01-23 | 2009-01-23 | Novel surge protective device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920095453U CN201374558Y (en) | 2009-01-23 | 2009-01-23 | Novel surge protective device |
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| CN201374558Y true CN201374558Y (en) | 2009-12-30 |
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| CN200920095453U Expired - Lifetime CN201374558Y (en) | 2009-01-23 | 2009-01-23 | Novel surge protective device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102437549A (en) * | 2011-12-23 | 2012-05-02 | 北京天源科创风电技术有限责任公司 | Two-bus short-circuit protective isolation device and method |
| CN102570438A (en) * | 2010-12-29 | 2012-07-11 | 孙巍巍 | Surge protector with back-up protection device |
| CN102884696A (en) * | 2010-05-04 | 2013-01-16 | 瑞典爱立信有限公司 | Improved surge protection |
| CN104242238A (en) * | 2014-09-15 | 2014-12-24 | 广州市拓牌倍普电子有限公司 | Monitoring device for surge protective device |
| CN106849046A (en) * | 2017-04-17 | 2017-06-13 | 四川中光防雷科技股份有限公司 | A kind of power source surge protector |
| CN111448625A (en) * | 2018-01-22 | 2020-07-24 | 上海雷迅防雷技术有限公司 | Externally controllable thermal trip device and method suitable for piezoresistor and application |
-
2009
- 2009-01-23 CN CN200920095453U patent/CN201374558Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102884696A (en) * | 2010-05-04 | 2013-01-16 | 瑞典爱立信有限公司 | Improved surge protection |
| CN102570438A (en) * | 2010-12-29 | 2012-07-11 | 孙巍巍 | Surge protector with back-up protection device |
| CN102437549A (en) * | 2011-12-23 | 2012-05-02 | 北京天源科创风电技术有限责任公司 | Two-bus short-circuit protective isolation device and method |
| CN102437549B (en) * | 2011-12-23 | 2017-06-30 | 北京天源科创风电技术有限责任公司 | Two lines bus short-circuit protection isolating device and the method for two lines bus short-circuit protection isolation |
| CN104242238A (en) * | 2014-09-15 | 2014-12-24 | 广州市拓牌倍普电子有限公司 | Monitoring device for surge protective device |
| CN106849046A (en) * | 2017-04-17 | 2017-06-13 | 四川中光防雷科技股份有限公司 | A kind of power source surge protector |
| CN111448625A (en) * | 2018-01-22 | 2020-07-24 | 上海雷迅防雷技术有限公司 | Externally controllable thermal trip device and method suitable for piezoresistor and application |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Shendun Electronic Technology Co. Ltd. force in Tianjin City Assignor: Sun Weiwei Contract record no.: 2011120000220 Denomination of utility model: Novel surge protective device Granted publication date: 20091230 License type: Exclusive License Record date: 20111026 |
|
| ASS | Succession or assignment of patent right |
Owner name: ZHONGLI THUNDER-PREVENTION TECHNOLOGY CO., LTD., T Free format text: FORMER OWNER: SUN WEIWEI Effective date: 20120711 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20120711 Address after: 300384 Tianjin Huayuan Industrial Park Wuhua Avenue No. 8 Kaifa building B block 3 layer Patentee after: Zhongli Thunder-Prevention Technology Co., Ltd., Tianjin City Address before: 300384 Tianjin Huayuan new technology industrial park Wuhua Avenue No. 8 Kaifa building B block three layer Patentee before: Sun Weiwei |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20091230 |