CN204441241U - A kind of fuse-link of photovoltaic system protection fuse - Google Patents
A kind of fuse-link of photovoltaic system protection fuse Download PDFInfo
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- CN204441241U CN204441241U CN201520135895.XU CN201520135895U CN204441241U CN 204441241 U CN204441241 U CN 204441241U CN 201520135895 U CN201520135895 U CN 201520135895U CN 204441241 U CN204441241 U CN 204441241U
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Abstract
The utility model discloses a kind of fuse-link of photovoltaic system protection fuse, belong to power fuse apparatus field, aim to provide a kind of when fuse failure produces high pressure, sealing end cap can not be caused to be separated with fusion tube and to cause the fuse-link of explosion, its technical scheme is as follows, a kind of fuse-link of photovoltaic system protection fuse, comprise fusion tube, be located at the fuse in fusion tube and be sheathed on the sealing end cap at fusion tube two ends respectively, high-silicon quartzite sand is filled with in described fusion tube, described sealing end cap is provided with towards fusion tube internal direction and keeps out electric arc and the pressure relief mechanism carrying out pressure release.
Description
Technical field
The utility model relates to a kind of power fuse apparatus field, and more particularly, it relates to a kind of fuse-link of photovoltaic system protection fuse.
Background technology
Fuse plays great role in the safe operation of circuit, and along with the development of power industry, the requirement its circuit being implemented to protection is also more and more higher.Fuse on market is generally made up of fusion tube, fuse and sealing end cap, along with the sharp increase of people's power consumption, network load is large, due to network configuration and plant issue, often has load accident to occur, often occur that when circuit goes wrong fuse continues electric discharge at short notice, produce instantaneous hard arc, strong electric arc easily punctures sealing end cap, causes fuse to damage, can not reuse, and there is certain potential safety hazard.
Therefore application number be 201320499267.0 Chinese patent disclose a kind of photovoltaic system protection fuse blows body, it comprises fusion tube, be located at the fuse in fusion tube and be located at the sealing end cap at fusion tube two ends respectively, fusion tube two ends are respectively equipped with head protector, head protector is between fusion tube and sealing end cap, head protector is provided with the through hole with fusion tube conducting, the opposite side of through hole correspondence sealing end cap is provided with the insulation board that can puncture, the internal diameter of through hole is less than the internal diameter of head protector, the external diameter of insulation board is greater than the internal diameter of through hole, insulation board is made up of asbestos, quartz sand is provided with in fusion tube.Although this fuse can effectively avoid sealing end cap by arc through, but because the high hot-air formed in fusion tube increases intraductal atmospheric pressure, in fusion tube after insulation board punctures, space is communicated with insulation board and the space sealed between end cap, and the space between insulation board and sealing end cap is a closed space, there is certain air pressure, the air pressure that pressure communication in the air pressure of this part and fusion tube can bear be not enough to release high hot-air increase after air pressure, sealing end cap can be caused to be separated with fusion tube and to cause explosion.
Utility model content
For the deficiency that prior art exists, the purpose of this utility model is to provide a kind of when fuse failure produces high pressure, and sealing end cap can not be caused to be separated with fusion tube and to cause the fuse-link of explosion.
For achieving the above object; the utility model provides following technical scheme: a kind of fuse-link of photovoltaic system protection fuse; comprise fusion tube, be located at the fuse in fusion tube and be sheathed on the sealing end cap at fusion tube two ends respectively; be filled with high-silicon quartzite sand in described fusion tube, described sealing end cap is provided with towards fusion tube internal direction and keeps out electric arc and the pressure relief mechanism carrying out pressure release.
By adopting technique scheme, by the pressure relief mechanism arranged towards fusion tube internal direction at sealing end cap, make fuse produce instantaneous hard arc when fusing and effectively keep out arc extinguishing, the high pressure simultaneously produced in fusion tube carries out pressure release by pressure relief mechanism, makes fuse-link that sealing end cap can not be caused to be separated with fusion tube and to cause explosion.
The utility model is set to further: described pressure relief mechanism comprises relief hole, push pedal and bellows, described push pedal to be arranged in fusion tube and to be tightly connected with fusion tube, described relief hole is arranged on sealing end cap, one end of described bellows is entangled relief hole and is fixedly connected with sealing end cap, and the other end is fixedly connected with push pedal.
By adopting technique scheme, the setting of push pedal can be kept out fuse and produce instantaneous hard arc when fusing, and the high pressure produced when fuse failure can promote push pedal to be moved to relief hole direction, make between push pedal and fuse, to produce certain space, thus in fusion tube, produce more space, the object of pressure release is reached with this.
The utility model is set to further: described sealing end cap is provided with through hole.
By adopting technique scheme, the air between sealing end cap and push pedal can be released when push pedal is moved by the through hole that sealing end cap is arranged from through hole, makes push pedal removable.
The utility model is set to further: the periphery of described push pedal is provided with sealing ring, and described sealing ring is clamped between push pedal and fusion tube inwall.
By adopting technique scheme, the high pressure produced can not be spilt between push pedal and fusion tube, thus make whole pressure act on push pedal, to promote the movement of push pedal timely and effectively, for providing space in fusion tube timely with pressure release during fuse failure.
Accompanying drawing explanation
Fig. 1 is the structural representation before the fuse failure of the fuse-link of the utility model photovoltaic system protection fuse;
Structural representation when Fig. 2 is the fuse failure of the fuse-link of the utility model photovoltaic system protection fuse.
Reference numeral: 1, fusion tube; 2, fuse; 3, end cap is sealed; 4, push pedal; 5, bellows; 6, relief hole; 7, through hole; 8, sealing ring.
Embodiment
Be described further with reference to Fig. 1, Fig. 2 fuse-link embodiment to the utility model photovoltaic system protection fuse.
A kind of fuse-link of photovoltaic system protection fuse; comprise fusion tube 1, be located at the fuse 2 in fusion tube 1 and be sheathed on the sealing end cap 3 at fusion tube 1 two ends respectively; in described fusion tube 1, remainder is filled with high-silicon quartzite sand, and described sealing end cap 3 is provided with towards fusion tube 1 internal direction and keeps out electric arc and the pressure relief mechanism carrying out pressure release.
Described pressure relief mechanism comprises relief hole 6, push pedal 4 and bellows 5, described push pedal 4 to be arranged in fusion tube 1 and to be tightly connected with fusion tube 1, described relief hole 6 is arranged on sealing end cap 3, one end of described bellows 5 is entangled relief hole 6 and is fixedly connected with sealing end cap 3, the other end is fixedly connected with push pedal 4, described bellows 5 is exotic material formation, and described push pedal 4 is that insulating material is formed.
Described sealing end cap 3 is provided with through hole 7.
The periphery of described push pedal 4 is provided with sealing ring 8, and described sealing ring 8 is clamped between push pedal 4 and fusion tube 1 inwall, and described sealing ring 8 is exotic material formation.
Specific implementation process: after the fuse 2 in fusion tube 1 fuses (as shown in Figure of description 2), at this moment just instantaneous hard arc can be produced and Yin Gao hot-air increases intraductal atmospheric pressure, hard arc acts directly in push pedal 4, and can not touch on sealing end cap 3, protect end cap, and high pressure also can act in push pedal 4, and push pedal 4 is pushed away toward sealing end cap 3 direction move, can by bellows 5 compression slowly, and the air between push pedal 4 and sealing end cap 3 just can be discharged in the process of push pedal 4 movement from through hole 7, directly discharge from relief hole 6 in the process that air in bellows 5 compresses at bellows 5, push pedal 4 can be moved to sealing end cap 3 smoothly, due to the movement of push pedal 4, make push pedal 4 directly become space in fusion tube 1 to the space of sealing end cap 3 movement, so just for providing the space of release air pressure in fusion tube 1, thus make fuse-link that sealing end cap 3 can not be caused to be separated with fusion tube 1 and to cause explosion.
The above is only preferred implementation of the present utility model, protection range of the present utility model be not only confined to above-described embodiment, and all technical schemes belonged under the utility model thinking all belong to protection range of the present utility model.It should be pointed out that for those skilled in the art, do not departing from the some improvements and modifications under the utility model principle prerequisite, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (4)
1. the fuse-link of a photovoltaic system protection fuse; comprise fusion tube, be located at the fuse in fusion tube and be sheathed on the sealing end cap at fusion tube two ends respectively; be filled with high-silicon quartzite sand in described fusion tube, it is characterized in that: described sealing end cap is provided with towards fusion tube internal direction and keeps out electric arc and the pressure relief mechanism carrying out pressure release.
2. the fuse-link of a kind of photovoltaic system protection fuse according to claim 1; it is characterized in that: described pressure relief mechanism comprises relief hole, push pedal and bellows; described push pedal to be arranged in fusion tube and to be tightly connected with fusion tube; described relief hole is arranged on sealing end cap; one end of described bellows is entangled relief hole and is fixedly connected with sealing end cap, and the other end is fixedly connected with push pedal.
3. the fuse-link of a kind of photovoltaic system protection fuse according to claim 2, is characterized in that: described sealing end cap is provided with through hole.
4. the fuse-link of a kind of photovoltaic system protection fuse according to claim 3, it is characterized in that: the periphery of described push pedal is provided with sealing ring, described sealing ring is clamped between push pedal and fusion tube inwall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520135895.XU CN204441241U (en) | 2015-03-10 | 2015-03-10 | A kind of fuse-link of photovoltaic system protection fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520135895.XU CN204441241U (en) | 2015-03-10 | 2015-03-10 | A kind of fuse-link of photovoltaic system protection fuse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204441241U true CN204441241U (en) | 2015-07-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520135895.XU Active CN204441241U (en) | 2015-03-10 | 2015-03-10 | A kind of fuse-link of photovoltaic system protection fuse |
Country Status (1)
| Country | Link |
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| CN (1) | CN204441241U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111952134A (en) * | 2020-07-28 | 2020-11-17 | 湖南特诚成套电器有限公司 | Self-alarming injection type high-voltage fuse |
-
2015
- 2015-03-10 CN CN201520135895.XU patent/CN204441241U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111952134A (en) * | 2020-07-28 | 2020-11-17 | 湖南特诚成套电器有限公司 | Self-alarming injection type high-voltage fuse |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |