CN204706477U - A kind of low voltage isolation switch and water-tight device thereof - Google Patents
A kind of low voltage isolation switch and water-tight device thereof Download PDFInfo
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- CN204706477U CN204706477U CN201520415962.3U CN201520415962U CN204706477U CN 204706477 U CN204706477 U CN 204706477U CN 201520415962 U CN201520415962 U CN 201520415962U CN 204706477 U CN204706477 U CN 204706477U
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- bucker
- low voltage
- isolation switch
- voltage isolation
- water
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- 238000002955 isolation Methods 0.000 title claims abstract description 40
- 230000005540 biological transmission Effects 0.000 claims abstract description 33
- 230000002209 hydrophobic effect Effects 0.000 claims description 8
- 239000003292 glue Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 15
- 230000007547 defect Effects 0.000 abstract description 7
- 238000007789 sealing Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 description 5
- 238000009795 derivation Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model discloses a kind of water-tight device for low voltage isolation switch, for the waterproof of the auxiliary contact in mechanism case, comprise the bucker being fixedly connected on power transmission shaft periphery and the drainage arrangement be arranged at below bucker, drainage arrangement to be positioned at above auxiliary contact and to be provided with the discharge outlet being communicated in mechanism case outside, and bucker and drainage arrangement are all positioned at mechanism case inside.Bucker from the inside being transferred to mechanism's casing between power transmission shaft and mechanism's casing downwards, is fixedly connected with power transmission shaft by this programme by the waterproof position of equipment, avoids the impact of sliding friction on sealing effectiveness.During use, outside water flows down along power transmission shaft, guides in the drainage arrangement flowing to below, finally by discharge outlet output mechanism case through bucker.Reduce the failure rate that rainy season, low voltage isolation switch manual-operating mechanism auxiliary contact made moist, avoid the DC system grounding defect caused because rainwater infiltrates disconnecting link auxiliary contact.The invention also discloses a kind of low voltage isolation switch.
Description
Technical field
The utility model relates to electrical equipment technical field, particularly relates to a kind of low voltage isolation switch and water-tight device thereof.
Background technology
Often there is DC earthing defect when rainy season in transformer station, causes the abnormal running of direct current system.Maintainer is when processing DC earthing defect, and necessary cut-off signal power supply, checks one by one and confirm fault point, and change.By such environmental effects, most of DC ground fault can involution in short-term, can not confirm position of failure point in time, forms system risk.Find that when analyzing the type defect cause over the years 7% is because secondary line damages, because secondary component fault when 13%, the reason of 80% is made moist, and finds out thus, and in low voltage isolation switch mechanism case, electrical secondary system is made moist is transformer station's the very crux that rainy season, DC earthing took place frequently.Find that its waterproof method is unreasonable when analysis institution's box structure, seal by the bearing fit between mechanism case and power transmission shaft.Concrete, power transmission shaft vertically upward through mechanism's casing, and is connected to mechanism's casing rotationally by the bearing be set on power transmission shaft, and original hermetically-sealed construction is then realized by closely cooperating of this bearing.Therefore, bearing directly has influence on the water resistance of this low voltage isolation switch with the tightness that coordinates between power transmission shaft and casing.But because gap in the hard seal rotary of mechanism case is comparatively large, and sliding friction can cause gap to become large further, and rainwater can infiltrate in mechanism case by power transmission shaft, causes auxiliary contact to make moist, and DC earthing accident occurs.
Therefore, how avoiding the auxiliary contact in low voltage isolation switch mechanism case to make moist, is the current technical issues that need to address of those skilled in the art.
Utility model content
In view of this, the utility model provides a kind of water-tight device for low voltage isolation switch, and this water-tight device can effectively avoid auxiliary contact to make moist, and reduces DC earthing ratio of defects.
In order to solve the problem, the utility model provides a kind of water-tight device for low voltage isolation switch, for the waterproof of the auxiliary contact in mechanism case, comprise the bucker being fixedly connected on power transmission shaft periphery and the drainage arrangement be arranged at below described bucker, described drainage arrangement to be positioned at above described auxiliary contact and to be provided with the discharge outlet being communicated in described mechanism case outside, and it is inner that described bucker and described drainage arrangement are all positioned at described mechanism case.
Preferably, above-mentioned in the water-tight device of low voltage isolation switch, described bucker is from top to bottom become large pyramidal structure gradually along described power transmission shaft, and described drainage arrangement is be covered in the drain pan above described auxiliary contact, and described discharge outlet is arranged at the outward flange of described drain pan.
Preferably, above-mentioned in the water-tight device of low voltage isolation switch, described bucker is sealedly attached to the periphery of described power transmission shaft by marine glue.
Preferably, above-mentioned in the water-tight device of low voltage isolation switch, described drain pan is provided with the rhone be communicated with described discharge outlet.
Preferably, in the water-tight device of low voltage isolation switch, described discharge outlet is communicated with drainage pipe above-mentioned, and the outlet of described drainage pipe is outside in described mechanism case.
Preferably, above-mentioned in the water-tight device of low voltage isolation switch, described bucker and described drain pan are hydrophobic material.
A kind of water-tight device for low voltage isolation switch that the utility model provides, for the waterproof of the auxiliary contact in mechanism case, comprise the bucker being fixedly connected on power transmission shaft periphery and the drainage arrangement be arranged at below bucker, drainage arrangement to be positioned at above auxiliary contact and to be provided with the discharge outlet being communicated in mechanism case outside, and bucker and drainage arrangement are all positioned at mechanism case inside.Bucker from the inside being transferred to mechanism's casing between power transmission shaft and mechanism's casing downwards, is fixedly connected with power transmission shaft by this programme by the waterproof position of equipment, avoids the impact of sliding friction on sealing effectiveness.During use, outside water flows down along power transmission shaft, guides in the drainage arrangement flowing to below, finally by discharge outlet output mechanism case through bucker.Reduce the failure rate that rainy season, low voltage isolation switch manual-operating mechanism auxiliary contact made moist, avoid the DC system grounding defect caused because rainwater infiltrates disconnecting link auxiliary contact.
The utility model additionally provides a kind of low voltage isolation switch, comprises mechanism case and is arranged at the auxiliary contact of described mechanism case inside, also comprises as above for the water-tight device of low voltage isolation switch.The derivation of the beneficial effect that this low voltage isolation switch produces is similar with the derivation cardinal principle of the above-mentioned beneficial effect brought for the water-tight device of low voltage isolation switch, therefore repeats no more herein.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the mounting structure schematic diagram of the water-tight device for low voltage isolation switch in the utility model specific embodiment scheme.
In Fig. 1:
Bucker-1, drain pan-2, auxiliary contact-3, power transmission shaft-4.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Please refer to Fig. 1, Fig. 1 is the mounting structure schematic diagram of the water-tight device for low voltage isolation switch in the utility model specific embodiment scheme.
In a kind of specific embodiment scheme, the utility model provides a kind of water-tight device for low voltage isolation switch, for the waterproof of the auxiliary contact 3 in mechanism case, comprise the bucker 1 being fixedly connected on power transmission shaft 4 periphery and the drainage arrangement be arranged at below bucker 1, drainage arrangement to be positioned at above auxiliary contact 3 and to be provided with the discharge outlet being communicated in mechanism case outside, and bucker 1 and drainage arrangement are all positioned at mechanism case inside.
Concrete, bucker 1 is for guiding in drainage arrangement from the outside water flowed in mechanism case along power transmission shaft 4 of mechanism case, because mechanism case inner space is narrow and small, and also have other elements, so, in order to avoid the water on bucker 1 splashes other elements, water-tight device is set to bucker 1 and drainage arrangement two parts by this programme.Drainage arrangement is used for the water dripped from bucker 1 being collected and being discharged to mechanism case outside.Carry out drainage works for the ease of drainage arrangement, the drainage arrangement in this programme needs to keep fixing, and namely drainage arrangement does not rotate with power transmission shaft 4, concrete, drainage arrangement can be fixed on auxiliary contact 3.Drainage arrangement is positioned at the top of auxiliary contact 3, and the water that bucker 1 is dripped can not drop on auxiliary contact 3, thus achieves waterproof action.
It should be noted that, the bucker 1 in this programme can be designed as various structures form, such as pyramidal structure, umbrella-shaped structure or hemispherical dome structure etc., as long as rainwater etc. can be guided in drainage arrangement.Accordingly, drainage arrangement also can be designed as the structures such as the plate of disc, box-like, tabular or trough of belt, as long as water can be discharged to the outside and auxiliary contact 3 do not affected below it of mechanism case.Preferably, the bucker 1 in this programme is from top to bottom become large pyramidal structure gradually along power transmission shaft 4, and namely the vertex of a cone of this taper bucker 1 upwards, and such rainwater just can go downstream along taper and then enter in drainage arrangement.Drainage arrangement is specially the drain pan 2 be covered in above auxiliary contact 3, and its discharge outlet is arranged at the outward flange of drain pan 2.
It should be noted that, bucker 1 in this programme can be fixedly connected on power transmission shaft 4 by various ways such as welding, be threaded, glue is bonding or one-body molded, preferably, bucker 1 in this programme is sealedly attached to the periphery of power transmission shaft 4 by marine glue, be so not only convenient to installation, but also ensure that sealing, eliminate gap, can carry out seamless link between waterproof, drainage arrangement and power transmission shaft 4, the equipment that can not affect normally runs, and also can not affect waterproof efficiency.
The water fallen from bucker 1 can collect and discharge along the discharge outlet of specifying by drain pan 2, in order to more be convenient to that overboard carrying out is collected guiding, preferably, this programme is provided with the rhone be communicated with discharge outlet on drain pan 2, water can more fast be discharged by these rhones exactly, thus makes the time of staying of water in mechanism case shorter.
It should be noted that, drainage arrangement in this programme can have various structures mode to be communicated in the outside of mechanism case, such as communicate with discharge outlet by offering hole on the casing of mechanism case, or discharge outlet is communicated with the outside of mechanism case by pipeline, or discharge outlet is communicated etc. with mechanism case outside by drainage pipe.Preferably, this programme is communicated with drainage pipe in discharge outlet, and the outlet of drainage pipe is then communicated in the outside of mechanism case.
In order to quick by water output mechanism case further, preferably, the bucker 1 in this programme and drain pan 2 all adopt hydrophobic material to be made.Concrete, hydrophobic material can select hydrophobic glass, hydrophobic rock cotton board or hydrophobic silicon rubber etc., and those skilled in the art can select the hydrophobic material of different hydrophobicity performance as required.Setting like this, just can make the water that falls rapidly outside output mechanism case, thus ensure that the drying in casing.
Before this water-tight device of use, first bucker 1 and power transmission shaft 4 are connected and sealed with marine glue, ensure that bucker 1 is connected and fixed firm.Then, drain pan 2 is arranged on the top of auxiliary contact 3, after installing, carries out waterproof test.Concrete, waterproof test be by spraying to power transmission shaft 4, trickle, observe and to immerse with or without water that auxiliary contact 3 complete.When after waterproof and drainage arrangement test passes, can use.
During use, outside water flows down along power transmission shaft 4, guides in the drainage arrangement flowing to below, finally by discharge outlet output mechanism case through bucker 1.
The utility model program analysis feature of low voltage isolation switch manual-operating mechanism case, by the power transmission shaft 4 in low voltage isolation switch man-operating mechanism case increases bucker 1 and drainage arrangement, by the waterproof position of equipment from the inside being transferred to mechanism's casing between power transmission shaft 4 and mechanism's casing downwards, bucker 1 is fixedly connected with power transmission shaft 4, avoids the impact of sliding friction on sealing effectiveness.Ensure operating mechanism not by rain erosion, improve the reliability of electrical secondary system.
The beneficial effect of the utility model scheme is: reduce the failure rate that rainy season, low voltage isolation switch manual-operating mechanism auxiliary contact made moist, and avoids the DC system grounding defect caused because rainwater infiltrates disconnecting link auxiliary contact.Meanwhile, for transformer station secondary system is alternate and hidden danger is got rid of in insulation against ground, the reliability of transformer station secondary system is further ensured.
The utility model additionally provides a kind of low voltage isolation switch, comprises mechanism case and is arranged at the auxiliary contact 3 of described mechanism case inside, also comprises as above for the water-tight device of low voltage isolation switch.The derivation of the beneficial effect that this low voltage isolation switch produces is similar with the derivation cardinal principle of the above-mentioned beneficial effect brought for the water-tight device of low voltage isolation switch, therefore repeats no more herein.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the utility model.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein when not departing from spirit or scope of the present utility model, can realize in other embodiments.Therefore, the utility model can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (7)
1. the water-tight device for low voltage isolation switch, for the waterproof of the auxiliary contact (3) in mechanism case, it is characterized in that, comprise the bucker (1) being fixedly connected on power transmission shaft (4) periphery and the drainage arrangement being arranged at described bucker (1) below, described drainage arrangement is positioned at described auxiliary contact (3) top and is provided with the discharge outlet being communicated in described mechanism case outside, and it is inner that described bucker (1) and described drainage arrangement are all positioned at described mechanism case.
2. the water-tight device for low voltage isolation switch according to claim 1, it is characterized in that, described bucker (1) is for from top to bottom to become large pyramidal structure gradually along described power transmission shaft (4), described drainage arrangement is for being covered in the drain pan (2) of described auxiliary contact (3) top, and described discharge outlet is arranged at the outward flange of described drain pan (2).
3. the water-tight device for low voltage isolation switch according to claim 2, is characterized in that, described bucker (1) is sealedly attached to the periphery of described power transmission shaft (4) by marine glue.
4. the water-tight device for low voltage isolation switch according to claim 2, is characterized in that, described drain pan (2) is provided with the rhone be communicated with described discharge outlet.
5. the water-tight device for low voltage isolation switch according to claim 2, is characterized in that, described discharge outlet is communicated with drainage pipe, and the outlet of described drainage pipe is outside in described mechanism case.
6. the water-tight device for low voltage isolation switch according to any one of claim 2 to 5, is characterized in that, described bucker (1) and described drain pan (2) are hydrophobic material.
7. a low voltage isolation switch, comprises mechanism case and is arranged at the auxiliary contact (3) of described mechanism case inside, it is characterized in that, also comprise the water-tight device for low voltage isolation switch as described in any one of claim 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520415962.3U CN204706477U (en) | 2015-06-16 | 2015-06-16 | A kind of low voltage isolation switch and water-tight device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520415962.3U CN204706477U (en) | 2015-06-16 | 2015-06-16 | A kind of low voltage isolation switch and water-tight device thereof |
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| Publication Number | Publication Date |
|---|---|
| CN204706477U true CN204706477U (en) | 2015-10-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520415962.3U Active CN204706477U (en) | 2015-06-16 | 2015-06-16 | A kind of low voltage isolation switch and water-tight device thereof |
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| Country | Link |
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| CN (1) | CN204706477U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105655189A (en) * | 2016-01-12 | 2016-06-08 | 周海兵 | Disconnecting switch with rotation shaft water retaining structure |
| CN107946125A (en) * | 2017-12-06 | 2018-04-20 | 国家电网公司 | A kind of isolator operating mechanism case waterproof connecting device |
-
2015
- 2015-06-16 CN CN201520415962.3U patent/CN204706477U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105655189A (en) * | 2016-01-12 | 2016-06-08 | 周海兵 | Disconnecting switch with rotation shaft water retaining structure |
| CN105655189B (en) * | 2016-01-12 | 2017-10-20 | 周海兵 | Disconnecting switch with rotary shaft water-retaining structure |
| CN107946125A (en) * | 2017-12-06 | 2018-04-20 | 国家电网公司 | A kind of isolator operating mechanism case waterproof connecting device |
| CN107946125B (en) * | 2017-12-06 | 2019-03-22 | 国家电网公司 | A kind of isolator operating mechanism case waterproof connecting device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |