CN108242374A - A kind of band fixes the combined type DC fuse of fracture - Google Patents
A kind of band fixes the combined type DC fuse of fracture Download PDFInfo
- Publication number
- CN108242374A CN108242374A CN201810107453.2A CN201810107453A CN108242374A CN 108242374 A CN108242374 A CN 108242374A CN 201810107453 A CN201810107453 A CN 201810107453A CN 108242374 A CN108242374 A CN 108242374A
- Authority
- CN
- China
- Prior art keywords
- fuse
- fracture
- melt
- combined type
- current
- 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.)
- Pending
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/0241—Structural association of a fuse and another component or apparatus
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
- H01H85/05—Component parts thereof
- H01H85/18—Casing fillings, e.g. powder
Abstract
The invention discloses the combined type DC fuses that a kind of band fixes fracture, including fixed rupture portion and DC fuse part phase and even the parallel branch of formation, the wherein inductance coil of DC fuse part can take additional inductance coil and melt to turn to two kinds of realization methods of inductance coil；Beneficial effects of the present invention：When the electric line or electrical equipment that fuse is protected are when by lightning impulse current in short-term, damage of the lightning current to DC fuse melt can be avoided；So that when DC fuse is by short circuit or overload fault electric current, fuse can reliably cut-off fault current, realize the protection to electricity system equipment.Solve the problems, such as that existing fuse technologies can not avoid lightning current and fuse, it is ensured that fuse normally cut-offs overload current and short circuit current without being influenced by lightning current；The present invention can improve the safe and reliable property of straight-flow system electrical equipment.
Description
Technical field
The present invention relates to electric system fuse technologies field, the combined type direct current that more particularly to a kind of band fixes fracture melts
Disconnected device.
Background technology
Fuse be it is a kind of when electric current be more than specified value for a period of time after, Melt molten is made with the heat that its own is generated,
So as to the device for switching for disconnecting circuit, it is widely used in high and low voltage electric distribution system and control system and electrical equipment, makees
It is using one of most common protection device for short circuit and the protector of overcurrent fault.
The fixed intermetallic clearance for insulation of fracture has certain dielectric strength, influence its dielectric strength factor include between
Stand-off distance from, dielectric, fracture material etc., only after fixed fracture adds the voltage of some strength, fixed fracture is
With breakdown, it is able to the conducting electric current as conductor.
Lightning impulse current is big with amplitude, action time short feature.But the I of lightning impulse current2T is quite big, thunder and lightning
When dash current is by DC fuse melt, the fuel factor generated causes the melt of fuse to be damaged even fusing, influences
Fuse protects the short circuit of electrical equipment and overcurrent fault, reduces the safety and reliability of electricity system.Such as large size
Data storage center can resist the invasion of lightning current in short-term, but data storage center power supply system is frequently resulted in during lightning current arrival
The DC fuse malfunction of system, causes data center's power failure, is largely lost so as to cause data, brought about great losses.
Thus it is badly in need of being resistant to the significantly dc circuit breaker of dash current in short-term such as lightning current, reduces the loss in production.
Inductance coil leads to direct current, hinders the characteristic of exchange so that inductance coil does not influence loop current in DC power-supply system
Size.When the great dash current of current-rising-rate arrives, huge induced voltage, sensing can be generated at inductance coil both ends
Voltage swing is directly proportional to current changing rate, and inductance coil can hinder passing through for dash current.
Invention content
In order to overcome the above-mentioned problems of the prior art, the purpose of the present invention is to provide a kind of bands to fix answering for fracture
Box-like DC fuse, can effectively avoid destruction of the lightning impulse current for DC fuse melt, and function mainly exists
In DC fuse melt is caused not to be damaged when in face of lightning impulse current, so as to improve the power supply reliability of electric power system and
Ensure DC fuse should have the protective value unaffected.
In order to achieve the above object, the present invention adopts the following technical scheme that：
A kind of band fixes the combined type DC fuse of fracture, including fixed rupture portion 1 and DC fuse part phase
And the parallel branch even formed, two terminations of parallel branch need the electricity system protected.
The DC fuse part is independent DC fuse 2 and inductance coil 3 is in series to be formed or melt direct current
The melt of disconnected device 2 turns to inductance coil and forms the branch with identical function.
It is described straight when the DC fuse part is independent DC fuse 2 and inductance coil 3 is in series to be formed
Flow fuse 2 includes insulation shell 16, is fixed on the melt 14 in 16 center of insulation shell, is filled in insulation shell 16 and melt 14
Between DC fuse packing material 15.
When the DC fuse part is that the melt of DC fuse 2 is turned to inductance coil and formed to have identical work(
During the branch of energy, the DC fuse part includes insulation shell 16, is fixed on the melt coiling electricity in 16 center of insulation shell
Feel coil 26, the DC fuse packing material 15 being filled between insulation shell 16 and melt coiling inductance coil 26.
The DC fuse packing material 15 is quartz sand.
The fixed rupture portion 1 includes insulation crust 11, is fixed on the fixation fracture 13 in 11 center of insulation crust, fixed
Fracture 13 is metal ball gap, and keeps preset clearance for insulation, is dielectric 12 in clearance for insulation, dielectric 12 is solid
One or more combinations in body, liquids and gases；The quantity of the fixed fracture 13 is one or several fixed fractures
Parallel connection, to improve separation capacity and breakdown reliability.
The gas-insulated medium of preset pressure is filled in insulation crust 11 to improve breakdown reliability.
The makeup that becomes one of the fixed rupture portion 1 and DC fuse part is put, and is packaged together, and is formed whole
Body.
Compared with prior art, the invention has the advantages that：
By adding in inductance coil and fixed fracture so that during lightning current invasion electric power system, fixed fracture is breakdown logical
Stream, achievees the effect that parallel shunt, reduces the lightning current by DC fuse, melt is avoided to be damaged, and improves DC fuse
Functional reliability and electric power system power supply reliability.
When the electrical equipment that fuse is protected is when by lightning impulse current in short-term, lightning current can be reduced to direct current
The damage of fused mass of fuse；So that when DC fuse is by short circuit or overload fault electric current, fuse can reliably cut-off event
Hinder electric current, realize the protection to electricity system equipment.Lightning current can not be avoided by fuse blows by solving the prior art, thus
Influence the problem of fuse after being struck by lightning cut-offs the performance of overload current and short circuit current；The present invention can avoid fuse from melting
Body is influenced by lightning current, and then improves the safe and reliable property of electric power system electrical equipment.
Description of the drawings
Fig. 1 is the first structural representation of the DC fuse part of combined type DC fuse of the present invention with fixed fracture
Figure.
Fig. 2 is that the first structure of the DC fuse part of combined type DC fuse of the present invention with fixed fracture is detailed
Schematic diagram.
Fig. 3 is that second of the DC fuse part structure of combined type DC fuse of the present invention with fixed fracture is detailed
Schematic diagram.
Fig. 4 is equivalent circuit diagram when combined type DC fuse of the present invention with fixed fracture passes through system power.
Fig. 5 is equivalent circuit diagram when combined type DC fuse of the present invention with fixed fracture passes through lightning current.
Specific embodiment
Below in conjunction with drawings and the specific embodiments, the present invention is described in further detail.
A kind of band of the present invention fixes the combined type DC fuse of fracture, including fixed rupture portion 1 and DC fuse
Mutually and even the parallel branch of formation, two terminations of parallel branch need the electricity system protected for part.
The DC fuse part is independent DC fuse 2 and inductance coil 3 is in series to be formed (as shown in Figure 1)
Or the melt of DC fuse 2 is turned into inductance coil and forms the branch with identical function.
As shown in Fig. 2, a kind of band of the present embodiment fixes the combined type DC fuse of fracture, including：DC fuse is consolidated
Determine rupture portion and inductance coil 3.DC fuse includes melt 14, DC fuse packing material 15 (quartz sand) and insulation
Housing 16；Fixed rupture portion includes insulation crust 11, dielectric 12, fixed fracture 13；Inductance coil 3 and DC fuse
Melt 14 connect, and with branch circuit parallel connection where fixed fracture.
As shown in figure 3, a kind of band of the present embodiment fixes the combined type DC fuse another embodiment of fracture, packet
It includes：DC fuse part and fixed rupture portion.DC fuse part includes melt coiling inductance coil 26, direct current fusing
Device packing material 15 (quartz sand) and insulation shell 16；Fixed rupture portion includes insulation crust 11, dielectric 12, fixed disconnected
Mouth 13.26 place branch of melt coiling inductance coil and 13 place branch circuit parallel connection of fixed fracture.
Illustrate that a kind of band provided in this embodiment fixes the normal work of the combined type DC fuse of fracture in detail below
State.When circuit is in normal operating conditions, electric current passes through the melt 14 of DC fuse or melt coiling inductance coil 26
Place branch, fixed fracture 13 are equivalent to the switch disconnected.DC fuse realize in the loop to the overload of electrical equipment and
Short trouble is protected.Equivalent circuit diagram is as shown in figure 4, arrow direction is direction of current flow.
Illustrate that a kind of band provided in this embodiment fixes the combined type DC fuse of fracture in extraneous thunder and lightning in detail below
Working condition when electric current arrives.Lightning current current-rising-rate is very big, will be on inductance coil 3 or melt coiling inductance coil 26
High induction voltage is generated, this induced voltage is added in fixed 13 both ends of fracture, leads to the 13 clearance for insulation breakdown of fixed fracture, at this time
Fixed fracture 13 is equivalent to the switch being closed, and most of lightning current is greatly reduced by the fixation fracture 13 after breakdown by straight
The melt 14 of flow fuse or the electric current of melt coiling inductance coil 26, as shown in Figure 5.So as to which lightning current be avoided to fuse direct current
The damage of the melt 14 or melt coiling inductance coil 26 of device.
Claims (8)
1. a kind of band fixes the combined type DC fuse of fracture, it is characterised in that：Including fixed rupture portion and direct current fusing
Device part phase and the parallel branch even formed, two terminations of parallel branch need the electricity system protected.
2. a kind of band according to claim 1 fixes the combined type DC fuse of fracture, it is characterised in that：The direct current
Fuse part, which is independent DC fuse (2), and inductance coil (3) is in series to form or the melt by DC fuse (2)
It turns to inductance coil and forms the branch with identical function.
3. a kind of band according to claim 2 fixes the combined type DC fuse of fracture, it is characterised in that：When described straight
Flow fuse part is independent DC fuse (2) and when inductance coil (3) is in series to be formed, the DC fuse (2)
Including insulation shell (16), the melt (14) in insulation shell (16) center is fixed on, is filled in insulation shell (16) and melt
(14) the DC fuse packing material (15) between.
4. a kind of band according to claim 2 fixes the combined type DC fuse of fracture, it is characterised in that：When described straight
Flow fuse part is institute when the melt of DC fuse (2) being turned to inductance coil to form the branch with identical function
It states DC fuse part and includes insulation shell (16), be fixed on the melt coiling inductance coil in insulation shell (16) center
(26), the DC fuse packing material (15) being filled between insulation shell (16) and melt coiling inductance coil (26).
5. a kind of band according to claim 3 or 4 fixes the combined type DC fuse of fracture, it is characterised in that：It is described
DC fuse packing material (15) is quartz sand.
6. a kind of band according to claim 1 fixes the combined type DC fuse of fracture, it is characterised in that：The fixation
Rupture portion (1) includes insulation crust (11), is fixed on the fixation fracture (13) in insulation crust (11) center, fixed fracture (13)
For metal ball gap, and preset clearance for insulation is kept, be dielectric (12) in clearance for insulation, dielectric (12) is solid,
One or more combinations in liquids and gases；The quantity of the fixed fracture (13) for one or several fixed fractures and
Connection, to improve separation capacity and breakdown reliability.
7. a kind of band according to claim 6 fixes the combined type DC fuse of fracture, it is characterised in that：It is hit to improve
Wear the gas-insulated medium that reliability fills preset pressure in insulation crust (11).
8. a kind of band according to claim 1 fixes the combined type DC fuse of fracture, it is characterised in that：The fixation
The makeup that becomes one of rupture portion (1) and DC fuse part is put, and is packaged together, and is formed whole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810107453.2A CN108242374A (en) | 2018-02-02 | 2018-02-02 | A kind of band fixes the combined type DC fuse of fracture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810107453.2A CN108242374A (en) | 2018-02-02 | 2018-02-02 | A kind of band fixes the combined type DC fuse of fracture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108242374A true CN108242374A (en) | 2018-07-03 |
Family
ID=62698760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810107453.2A Pending CN108242374A (en) | 2018-02-02 | 2018-02-02 | A kind of band fixes the combined type DC fuse of fracture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108242374A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109361204A (en) * | 2018-09-16 | 2019-02-19 | 王雪燕 | A kind of arc-extinction device and method can be used for power grid AC and DC breaker |
| CN111211543A (en) * | 2020-01-19 | 2020-05-29 | 国网江苏省电力有限公司电力科学研究院 | Fusing type direct current breaker and control method thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2406332Y (en) * | 1999-12-23 | 2000-11-15 | 西安西北电力电器制造公司 | High-voltage current-limitted fuse for protection of voltage mutual-inductor |
| CN2485786Y (en) * | 2001-04-23 | 2002-04-10 | 南京鼎泰电器有限公司 | Fuse against current surge |
| CN201118213Y (en) * | 2007-11-23 | 2008-09-17 | 华中科技大学 | Energy-storage capacitor group protector |
| CN102110562A (en) * | 2011-02-15 | 2011-06-29 | 苏州名阳真空电器有限公司 | High voltage discharge tube |
| CN102254760A (en) * | 2010-05-17 | 2011-11-23 | 保险丝公司 | Double wound fusible element and associated fuse |
| CN102891057A (en) * | 2012-09-10 | 2013-01-23 | 爱普科斯电子(孝感)有限公司 | Gas discharging tube with low impact puncture voltage |
| CN106208025A (en) * | 2016-08-31 | 2016-12-07 | 庹先宏 | Short-wave antenna lightning protection circuit |
| CN108335956A (en) * | 2017-12-28 | 2018-07-27 | 广州邦讯信息***有限公司 | Novel gas discharge tube |
-
2018
- 2018-02-02 CN CN201810107453.2A patent/CN108242374A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2406332Y (en) * | 1999-12-23 | 2000-11-15 | 西安西北电力电器制造公司 | High-voltage current-limitted fuse for protection of voltage mutual-inductor |
| CN2485786Y (en) * | 2001-04-23 | 2002-04-10 | 南京鼎泰电器有限公司 | Fuse against current surge |
| CN201118213Y (en) * | 2007-11-23 | 2008-09-17 | 华中科技大学 | Energy-storage capacitor group protector |
| CN102254760A (en) * | 2010-05-17 | 2011-11-23 | 保险丝公司 | Double wound fusible element and associated fuse |
| CN102110562A (en) * | 2011-02-15 | 2011-06-29 | 苏州名阳真空电器有限公司 | High voltage discharge tube |
| CN102891057A (en) * | 2012-09-10 | 2013-01-23 | 爱普科斯电子(孝感)有限公司 | Gas discharging tube with low impact puncture voltage |
| CN106208025A (en) * | 2016-08-31 | 2016-12-07 | 庹先宏 | Short-wave antenna lightning protection circuit |
| CN108335956A (en) * | 2017-12-28 | 2018-07-27 | 广州邦讯信息***有限公司 | Novel gas discharge tube |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109361204A (en) * | 2018-09-16 | 2019-02-19 | 王雪燕 | A kind of arc-extinction device and method can be used for power grid AC and DC breaker |
| CN111211543A (en) * | 2020-01-19 | 2020-05-29 | 国网江苏省电力有限公司电力科学研究院 | Fusing type direct current breaker and control method thereof |
| CN111211543B (en) * | 2020-01-19 | 2022-06-17 | 国网江苏省电力有限公司电力科学研究院 | Fusing type direct current breaker and control method thereof |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180703 |