CN102903466B - A kind of high-capacity resistor ventilation heat abstractor - Google Patents
A kind of high-capacity resistor ventilation heat abstractor Download PDFInfo
- Publication number
- CN102903466B CN102903466B CN201210438549.XA CN201210438549A CN102903466B CN 102903466 B CN102903466 B CN 102903466B CN 201210438549 A CN201210438549 A CN 201210438549A CN 102903466 B CN102903466 B CN 102903466B
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- Prior art keywords
- resistor
- heating panel
- heat abstractor
- ventilation heat
- transformer
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- 238000009423 ventilation Methods 0.000 title claims abstract description 22
- 238000010438 heat treatment Methods 0.000 claims abstract description 43
- 239000010410 layer Substances 0.000 claims description 7
- 239000012774 insulation material Substances 0.000 claims description 3
- 238000002955 isolation Methods 0.000 claims description 3
- 230000002159 abnormal effect Effects 0.000 claims description 2
- 239000011229 interlayer Substances 0.000 claims description 2
- 230000007935 neutral effect Effects 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 2
- 230000005855 radiation Effects 0.000 description 5
- 235000014653 Carica parviflora Nutrition 0.000 description 3
- 241000243321 Cnidaria Species 0.000 description 3
- 241000238631 Hexapoda Species 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000002687 intercalation Effects 0.000 description 1
- 238000009830 intercalation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Abstract
The present invention relates to a kind of high-capacity resistor ventilation heat abstractor, comprise; Resistor casing: fresh air inlet is offered in bottom, the top of side sets out air holes, and interior side box wall is provided with the holddown groove of fixing heating panel; Heating panel: on the holddown groove that horizontal stacking is established in resistor casing, heating panel offers louvre; Resistor: be arranged between the top of the superiors' heating panel, the bottom of orlop heating panel and each heating panel, connect successively through connecting line between resistor.Compared with prior art, the present invention is applied on transformer neutral point resistance, effectively can improve the fault through-current capability of transformer neutral point resistance, limiting transformer single-phase fault electric current, the damage of protection main transformer.Neutral resistor also has the effect suppressing D.C. magnetic biasing in addition, and vibration strengthens, noise increases, loss increases because magnetic bias causes to prevent transformer.
Description
Technical field
The present invention relates to power system transformer, especially relate to a kind of high-capacity resistor ventilation heat abstractor.
Background technology
Facts have proved that transformer neutral point seals in Large Copacity resistance, effectively can suppress the impact of D.C. magnetic biasing, vibration strengthens, noise increases, loss increases because magnetic bias causes to prevent transformer.But the making of high-capacity resistor is the difficult point in this field always, key is the heat radiation and the sparkover problem that solve high-capacity resistor.In view of this, seek the design of a kind of high-capacity resistor ventilation and heat and become pursuing a goal of these those skilled in the art.
Summary of the invention
Object of the present invention be exactly in order to overcome above-mentioned prior art exist defect and a kind of high-capacity resistor ventilation heat abstractor is provided; the sparkover produced when big current flows through resistance effectively can be cut off at resistor Intercalation reaction ventilation and heat plate; and resistor radiating requirements can be met when normal operation; improve the ability that resistor bears fault current; limit transformer single-phase fault electric current; protect the safety of main equipment; improve power system operation reliability, resistor itself also can be made to avoid the scaling loss of fault current.
Object of the present invention can be achieved through the following technical solutions;
A kind of high-capacity resistor ventilation heat abstractor, comprising:
Resistor casing: the central authorities of bottom offer fresh air inlet, the top of side sets out air holes, and interior side box wall is provided with the holddown groove of fixing heating panel;
Heating panel: on the holddown groove that horizontal stacking is established in resistor casing, heating panel offers louvre;
Resistor: be arranged between the top of the superiors' heating panel, the bottom of orlop heating panel and each heating panel, connect successively through connecting line between resistor.
Described fresh air inlet place adopts silk screen as filter screen, can prevent toy and insect from entering.
Described exhaust vent adopts hurdle coral structure, side by side many rows, and rainproof baffle plate is equipped with on upper edge.
Described heating panel adopts high temperature insulating material to make and obtains, and when transformer single-phase earthing fault, can bear the abnormal high temperature that fault big current sends, and the sparkover of energy isolation resistance interlayer.
Described high-temperature insulation material is potsherd or other performance roughly the same material.
Described louvre is distributed on heating panel, and quantity is determined according to resistance heating amount situation.
The longitudinal section of described louvre is ladder structure of right angle.
Described resistor is sent out heat thermogenetic and is upwards dispelled the heat by ventilation hole on heating panel, and heating panel through between resistive layer, the exhaust vent finally along body side top sheds.
Compared with prior art, the present invention has the following advantages:
(1) design of high-capacity resistor ventilation and heat is adopted, effectively can improve resistor and bear transformer single-phase fault electric current, promote the insulation level between resistor layer, resist the risk that dielectric intensity under high temperature reduces, make resistor safe and reliable operation, protect the safety of main equipment;
(2) set up insulating radiation plate in the resistors, the ability resisting fault current of resistor can have been improved, inhibit transformer monophase current fault current, prevent the damage of transformer;
(3) pass through at the bottom of resistance box and the design of tank wall ventilation, the caloric value that can effectively leave in resistance box, maintain resistor to run at a certain temperature, both can prevent from making moist in resistance, the ability of resistance carrying fault current can be improved again, the design of ventilation hole can prevent entering of toy and insect, and side vents has rainwater-proof to enter baffle plate.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of heating panel;
Fig. 3 is the schematic diagram of inner ventilation of the present invention.
In figure, 1 is resistance inlet wire, and 2 is resistance casing, and 3 is resistor, and 4 is heating panel, and 5 is holddown groove, and 6 is resistance outlet, and 7 is fresh air inlet, and 8 is that exhaust vent, 9 is for louvre.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment
A kind of high-capacity resistor ventilation heat abstractor, its structure as shown in Figure 1, is made up of resistance casing 2, resistance 3, heating panel 4, holddown groove 5, fresh air inlet 7 and exhaust vent 8.
Wherein, resistance 3, heating panel 4, heating panel holder 5 are all arranged in resistance casing 2.Resistance casing 2 has fresh air inlet 7 and exhaust vent 8; Another casing also has entrance hole and wire hole, for contact resistance inlet wire 1 and resistance outlet 6.Fresh air inlet 7 adopts silk screen as filter screen, to prevent entering of toy and insect; Exhaust vent 8 adopts hurdle coral, and rainproof baffle plate is equipped with on upper edge, enters to prevent rainwater.
Row's holddown groove 5 is respectively installed in resistance casing 2 both sides, insertion for heating panel 4 is fixed, heating panel 4 inserts between two resistive layers, for layer insulation, and the louvre 9 that heating panel 4 is offered is for the heat radiation of resistor 3, as shown in Figure 2, louvre 9 is by L-type bend lower airway, and on heating panel 4, the quantity of louvre 9 is determined by resistor 3 caloric value for its structure.
In resistance box, ventilating path is shown in schematic diagram 3, cold wind enters from the fresh air inlet 7 bottom resistance casing 2, last resistive layer is upwards entered into by the louvre 9 that heating panel 4 is offered along tank wall and resistor 3, according to cold-hot air convection rule, the heat sent of resistor 3 passes through louvre, flow upward to upper strata, the exhaust vent 8 along both sides, case top outwards sheds, and finally reaches the heat balance in resistance box.
In actual use, the heating panel 4 in the present invention adopts press ceramic die sinking to make, and heating panel 4 inserts holddown groove internal fixtion between resistive layer.Bottom air inlet hole 7 adopts silk screen air intake, and fresh air inlet 7 aperture is determined according to resistance heating amount.Exhaust vent 8 adopts hurdle coral type, side by side many rows, and rain cover is equipped with on upper edge.
Transformer neutral point resistor ventilates and adopts this invention design, can effectively improve resistor and bear fault current capability, the sparkover that isolated fault electric current produces, and suppresses transformer fault electric current, and protection main equipment safety, ensures equipment reliability service.In addition, cooling requirements can be met when resistor normally runs and resistor can be maintained and run at a certain temperature, play effect on moisture extraction, improve equipment reliability of operation.
Heating panel 4 in the present invention can with other performance roughly the same material make, ensure the high temperature resistant and insulation property of material roughly the same.The size and dimension of the louvre 9 of heating panel 4 can change, and in the present embodiment, the longitudinal section of louvre 9 is ladder structure of right angle, resistive dissipation when guaranteeing isolation sparkover and can meet normal operation.The aperture of fresh air inlet 7 and exhaust vent 8 and shape also alterable, requires as long as meet resistor heat radiation, waterproof and protection against the tide.
In summary; the invention provides the design of a kind of high-capacity resistor ventilation and heat; it solve electric discharge flashover problem when fault current flows through resistance; and resistor heat radiation and moistureproof demand can be met when normal operation; improve the ability that resistor bears fault current, limit transformer single-phase fault electric current, protect the safety of main equipment; improve power system operation reliability, resistor also can be made to avoid the scaling loss of fault current.
Certainly, those skilled in the art in the art will be appreciated that, above-described embodiment is only used to the present invention is described, and be not used as limitation of the invention, as long as in spirit of the present invention, the change, modification etc. of above-described embodiment all will be dropped in the scope of the claims in the present invention.
Claims (6)
1. a high-capacity resistor ventilation heat abstractor, is characterized in that, comprising:
Resistor casing: the central authorities of bottom offer fresh air inlet, the top of side sets out air holes, and interior side box wall is provided with the holddown groove of fixing heating panel;
Heating panel: on the holddown groove that horizontal stacking is established in resistor casing, heating panel offers louvre;
Resistor: be arranged between the top of the superiors' heating panel, the bottom of orlop heating panel and each heating panel, connect successively through connecting line between resistor;
Described heating panel adopts high-temperature insulation material to make and obtains, and when transformer single-phase earthing fault, can bear the abnormal high temperature that fault big current sends, and the sparkover of energy isolation resistance interlayer;
Described resistor is sent out heat thermogenetic and is upwards dispelled the heat by ventilation hole on heating panel, and heating panel through between resistive layer, the exhaust vent finally along body side top sheds.
2. a kind of high-capacity resistor ventilation heat abstractor according to claim 1, is characterized in that, described fresh air inlet place adopts silk screen as filter screen.
3. a kind of high-capacity resistor ventilation heat abstractor according to claim 1, is characterized in that, described exhaust vent adopts grid fence structure, side by side many rows, and rainproof baffle plate is equipped with on upper edge.
4. a kind of high-capacity resistor ventilation heat abstractor according to claim 1, is characterized in that, described high-temperature insulation material is pottery.
5. a kind of high-capacity resistor ventilation heat abstractor according to claim 1, it is characterized in that, described louvre is distributed on heating panel, and quantity is determined according to resistance heating amount situation.
6. a kind of high-capacity resistor ventilation heat abstractor according to claim 1 or 5, it is characterized in that, the longitudinal section of described louvre is ladder structure of right angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210438549.XA CN102903466B (en) | 2012-11-06 | 2012-11-06 | A kind of high-capacity resistor ventilation heat abstractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210438549.XA CN102903466B (en) | 2012-11-06 | 2012-11-06 | A kind of high-capacity resistor ventilation heat abstractor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102903466A CN102903466A (en) | 2013-01-30 |
| CN102903466B true CN102903466B (en) | 2016-02-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210438549.XA Active CN102903466B (en) | 2012-11-06 | 2012-11-06 | A kind of high-capacity resistor ventilation heat abstractor |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105047367B (en) * | 2015-05-09 | 2017-03-15 | 陈学福 | It is removably connected with the transformer radiator of inner fin |
| CN108231302A (en) * | 2018-02-05 | 2018-06-29 | 南京海传燕兰轨道交通科技有限公司 | A kind of rail traffic braking resistor box |
| CN111627626A (en) * | 2020-06-15 | 2020-09-04 | 广州高铁计量检测股份有限公司 | Super high resistance box |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09129401A (en) * | 1995-10-27 | 1997-05-16 | Aichi Electric Co Ltd | Neutral point grounding resistor system |
| CN2386518Y (en) * | 1999-09-03 | 2000-07-05 | 岳建民 | High power nonlinear resistor |
| CN201387773Y (en) * | 2009-01-22 | 2010-01-20 | 唐永毅 | Hatchway type natural air-lift resistor cabinet |
| CN202434279U (en) * | 2011-12-28 | 2012-09-12 | 上海克拉电子有限公司 | Resistance box adopting aluminum shell resistance as resistance body |
-
2012
- 2012-11-06 CN CN201210438549.XA patent/CN102903466B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09129401A (en) * | 1995-10-27 | 1997-05-16 | Aichi Electric Co Ltd | Neutral point grounding resistor system |
| CN2386518Y (en) * | 1999-09-03 | 2000-07-05 | 岳建民 | High power nonlinear resistor |
| CN201387773Y (en) * | 2009-01-22 | 2010-01-20 | 唐永毅 | Hatchway type natural air-lift resistor cabinet |
| CN202434279U (en) * | 2011-12-28 | 2012-09-12 | 上海克拉电子有限公司 | Resistance box adopting aluminum shell resistance as resistance body |
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| Publication number | Publication date |
|---|---|
| CN102903466A (en) | 2013-01-30 |
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