CN204204566U - A kind of substation transformer chamber ventilation heat abstractor - Google Patents
A kind of substation transformer chamber ventilation heat abstractor Download PDFInfo
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- CN204204566U CN204204566U CN201420745626.0U CN201420745626U CN204204566U CN 204204566 U CN204204566 U CN 204204566U CN 201420745626 U CN201420745626 U CN 201420745626U CN 204204566 U CN204204566 U CN 204204566U
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Abstract
The utility model discloses a kind of substation transformer chamber ventilation heat abstractor in power transmission and distribution field, comprise air channel and axial flow blower, described transformer chamber is communicated with outdoor by described air channel, and described axial flow blower is fixed on the indoor end in described air channel, and the draught area in described air channel is 2.5m
2, described air channel is fixed by the wall of air channel support and transformer chamber, and described air channel is built with along described air channel axially-aligned, fixing with described air channel inwall, the dissipative muffler of annular; Described axial flow blower is provided with an automatic control end and a Non-follow control end, described axial flow blower is fixed on the indoor end in described air channel by fan supporter, be provided with the rubber blanket that 20mm is thick between described fan supporter and described axial flow blower, the air inlet of described axial flow blower is also equipped with steel plate grid.Its technique effect is: it can lowered the temperature to the transformer chamber of transformer station, while the main transformer in guarantee transformer chamber normally works, reduces noise to the impact of surrounding environment.
Description
Technical field
The utility model relates to a kind of substation transformer chamber ventilation heat abstractor in power transmission and distribution field.
Background technology
Along with Chinese national economy development, city size constantly expand, the part past suburb, around uninhabited transformer station develop into city gradually, around newly have the transformer substation in city of house, thus new requirement is proposed to the technical measures such as heat radiation, noise reduction of original transformer station.Transformer substation in city main transformer is positioned in transformer chamber and often causes ventilation not smooth, and radiating effect is poor, causes the temperature of transformer chamber raise and affect equipment stable operation.And forced heat radiation is carried out to transformer chamber, to make the temperature in transformer chamber reduce, easily cause noise pollution again.
Cause the reason of the problems referred to above to be: the first, ventilation quantity amount during transformer chamber's ventilation and heat is on the low side, this is because the main source of heat comprises following four in transformer chamber: the heat that main transformer reactive loss transforms; Caloric value under all insulation copper pipe bus operating current; To the heat transfer of transformer chamber under outside air temperature and comprehensive function at sunshine; The caloric value of main transformer indoor illumination light fitting.In above four caloric values, Section 1 caloric value is maximum, therefore only focuses on this caloric value during aeration radiation system in the past, and ignores rear three indoor airflow, cause transformer chamber to calculate heat less than normal, thus designs ventilation quantity also corresponding reduction.But in transformer chamber's actual motion, the heat of above four all may exist to some extent, makes main transformer indoor temperature inevitably higher than desired temperature, affects the safe operation of equipment.
The second, the mechanism produced from axial flow blower generation noise and unit are analyzed to extraradial noise, mainly produce following several dissimilar noise during blower fan running: the solid borne noise that the vibration caused due to axial flow blower running causes; Axial flow blower running columella on opportunity holds the machinery noise that joint etc. sends; Due to the pneumatic noise that air-flow causes by pressure change occurs during import and export that axial flow blower size is inconsistent causing air pulsing.In above-mentioned noise, wherein occupy an leading position with pneumatic noise.But at present for the control still suitable difficulty for those skilled in the art of pneumatic noise.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, a kind of substation transformer chamber ventilation heat abstractor is provided, it can lowered the temperature to the transformer chamber of transformer station, while the main transformer in guarantee transformer chamber normally works, reduces noise to the impact of surrounding environment.
A kind of technical scheme realizing above-mentioned purpose is: a kind of substation transformer chamber ventilation heat abstractor, comprises air channel and axial flow blower, and described transformer chamber is communicated with outdoor by described air channel, and described axial flow blower is fixed on the indoor end in described air channel,
The draught area in described air channel is 2.5m
2, described air channel is fixed by the wall of air channel support and transformer chamber, and described air channel is built with along described air channel axially-aligned, fixing with described air channel inwall, the dissipative muffler of annular; Described axial flow blower is provided with an automatic control end and a Non-follow control end, described axial flow blower is fixed on the indoor end in described air channel by fan supporter, be provided with the rubber blanket that 20mm is thick between described fan supporter and described axial flow blower, the air inlet of described axial flow blower is also equipped with steel plate grid.
Further, described substation transformer chamber ventilation heat abstractor also comprises a start and stop equipment, described start and stop equipment comprises temperature sensor, thermorelay, hand switch and A.C. contactor, described temperature sensor connects described thermorelay, described thermorelay connects the automatic control end of described axial flow blower, described hand switch connects the Non-follow control end of described axial flow blower, and described A.C. contactor is connected between the automatic control end of described axial flow blower and Non-follow control end.
Further, described A.C. contactor is provided with a remote communication interface.
Further, described dissipative muffler is made up of the super glass wool encapsulant layer of thickness 10mm and the perforated plate mask steel plate be wrapped in outside described super glass wool encapsulant layer, the thickness of described perforated plate mask steel plate is 1mm, and punching rate is 25%, and aperture is 6mm.
Further, described air channel is fixed on the wall of transformer chamber by air channel support, and the position one_to_one corresponding of the dissipative muffler in the position of described air channel support and described air channel, is provided with the rubber blanket that 20mm is thick between the outer wall in described air channel support and described air channel.
Have employed the technical scheme of a kind of substation transformer chamber ventilation heat abstractor of the present utility model, comprise air channel and axial flow blower, transformer chamber is communicated with outdoor by air channel, and its draught area increases to 2.5m
2, air channel is fixed by the wall of air channel support and transformer chamber, be provided with along described air channel axially-aligned in air channel simultaneously, fixing with described air channel inwall, the dissipative muffler of annular; Axial flow blower is positioned at indoor, air channel, and axial flow blower is provided with an automatic control end and a Non-follow control end, is provided with the thick rubber blanket of 20mm between axial flow blower and the fan supporter for fixing described axial flow blower.Its technique effect is: it can lowered the temperature to the transformer chamber of transformer station, while the main transformer in guarantee transformer chamber normally works, reduces noise to the impact of surrounding environment.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of a kind of substation transformer chamber ventilation heat abstractor of the present utility model.
Fig. 2 is the schematic diagram of start and stop equipment in a kind of substation transformer chamber ventilation heat abstractor of the present utility model.
Fig. 3 is the schematic diagram of dissipative muffler in a kind of substation transformer chamber ventilation heat abstractor of the present utility model.
Embodiment
Refer to Fig. 1, inventor of the present utility model, in order to understand the technical solution of the utility model better, below by embodiment particularly, and is described in detail by reference to the accompanying drawings:
A kind of substation transformer chamber ventilation heat abstractor of the present utility model, comprises the axial flow blower 2 that air channel 1 and correspondence are positioned at air channel 1.Air channel 1 is for being communicated with transformer chamber 100 with outdoor.The draught area in air channel 1 is about 2.5m
2.Air channel 1 is fixed on the wall of transformer chamber 100.The outdoor end in air channel 1, i.e. exhaust outlet, by outside downward for the hot-air in transformer chamber 100 discharge chamber.Axial flow blower 2 is placed in the air inlet in air channel 1, i.e. indoor end, to be introduced in air channel 1 by the hot-air in transformer chamber 100, lowers the temperature to transformer chamber 100.The air inlet of axial flow blower 2 adds cartridge plate grid 21, crashes in transformer chamber 100 to prevent part etc.
Being controlled on the spot by start and stop equipment 3 of axial flow blower 2, start and stop equipment 3 comprises temperature sensor 31, thermorelay 32, hand switch 33 and A.C. contactor 34.Wherein temperature sensor 31 connects thermorelay 32, the automatic control end of thermorelay 32 connecting axle flow fan 2.The Non-follow control end of hand switch 33 connecting axle flow fan 2.A.C. contactor 34 is connected between the automatic control end of axial flow blower 2 and Non-follow control end, for the automatic control end of switching shaft flow fan 2 and the open and-shut mode of Non-follow control end, under making axial flow blower 2 be in automatic control mode or MANUAL CONTROL mode.Under axial flow blower 2 is in automatic operation mode, namely automatic control end open and Non-follow control end close time, if temperature sensor 31 detects temperature in transformer chamber 100 exceed upper limit threshold, such as 45 DEG C time, temperature sensor 31 opens axial flow blower 2 by thermorelay 32, if temperature sensor 31 to detect in transformer chamber 100 temperature lower than lower threshold, such as 40 DEG C time, temperature sensor 31 is by thermorelay 32 closing axle flow fan 2.Under axial flow blower 2 is in manual work pattern, namely automatically control end close and Non-follow control end is opened time, the manually opening and closing of switch 33 Control Shaft flow fan 2.A.C. contactor 34 also has a remote communication interface, first axial flow blower 2 is switched to MANUAL CONTROL mode after A.C. contactor 34 receives remote control signal under and after temperature sensor 31 cuts out, again the opening and closing of axial flow blower 2 is controlled, also the automatic control end of axial flow blower and Non-follow control end all can be closed.Axial flow blower 2 is also provided with the communicator be connected with fire-fighting system simultaneously.
At present, in transformer chamber 100, the caloric value of main transformer is about 0.30 ~ 0.37% of main transformer rated capacity.The ventilation quantity computing formula of main transformer indoor radiating is:
In formula: Q is the heat (kW) in transformer chamber 100, is 70kW; Tn is the upper limit threshold of temperature in transformer chamber 100, is set to 45 DEG C; Tw is the temperature outside transformer chamber 100, is set to 33.7 DEG C; Cp is the specific heat at constant pressure of air, and ρ is the density of air, and V is the ventilation quantity of heat radiation in transformer chamber 100.Requiring to calculate according to the accident air drafts of 10 times per hour the ventilation quantity that in transformer chamber 100, every platform main transformer 100 needs is 5.33m
3/ s.Ventilation quantity V calculating formula is V=v × S2, in formula: v is wind speed; S2 is draught area.
Generally be equipped with along air channel 1 axially-aligned in air channel 1, fixing with the inwall in air channel 1, some dissipative mufflers 11 of annular, to cut down the noise produced when air-flow flows through in air channel 1, can have a significant effect to air pertormance simultaneously.The air velocity that air-flow flows through from dissipative muffler 11, namely wind speed general control is at about 8m/s.Available ventilation area can be calculated thus.Under the state using axial flow blower 2, the available ventilation area in air channel 1 all must reach 0.7m
2above.
Axial flow blower 2 is fixed on the indoor end in air channel 1 by fan supporter 22 simultaneously, therefore in order to reduce vibrational energy transmission, reducing the noise produced because axial flow blower 2 runs, before air channel 1 is installed, just taking quarantine measures.Vibration isolation measure should be taked to fan supporter 22 in a pre-installation in air channel 1.The thick rubber blanket of 20mm 4 will be installed between axial flow blower 2 and fan supporter 22, make axial flow blower 2 and fan supporter 22 without rigid contact, to cut down the amplitude of axial flow blower 2, thus reach the object of abatement solid borne noise.
The super glass wool encapsulant layer 112 be filled with in dissipative muffler 11 in the present embodiment.Super glass wool is nonflammable, and unit weight is little, heat insulation, heat-resisting and corrosion-resistant, and has good sound absorption characteristics.Unit weight is selected to be 15kgm in the present embodiment
3super glass wool, the thickness of super glass wool encapsulant layer 112 is 10cm, and outside super glass wool encapsulant layer 112, install perforated plate mask steel plate 111 additional.The thickness of perforated plate mask steel plate 111 is 1mm, and punching rate is 25%, and aperture is 6mm.
Meanwhile, air channel 1 is fixed on the wall of transformer chamber 100 by air channel support 12.The position of air channel support 12 be with the position of dissipative muffler 11 in air channel 1 one to one, between air channel support 12 and the outer wall in air channel 1, the thick rubber blanket of 20mm 4 is also installed simultaneously, noise when axial flow blower 2 runs can be cut down so further.
A kind of substation transformer chamber ventilation heat abstractor of the present utility model, effectively can control the temperature in substation transformer chamber 100, when axial flow blower 2 is often opened, summer, the temperature of substation transformer chamber 100 can control within 40 DEG C, and the noise in running also can control within 40 decibels, obvious noise effect can not be produced to surrounding environment.
Those of ordinary skill in the art will be appreciated that, above embodiment is only used to the utility model is described, and be not used as restriction of the present utility model, as long as in spirit of the present utility model, all will drop in Claims scope of the present utility model the change of the above embodiment, modification.
Claims (5)
1. a substation transformer chamber ventilation heat abstractor, comprises air channel and axial flow blower, and described transformer chamber is communicated with outdoor by described air channel, and described axial flow blower is fixed on the indoor end in described air channel, it is characterized in that:
The draught area in described air channel is 2.5m
2, described air channel is fixed by the wall of air channel support and transformer chamber, and described air channel is built with along described air channel axially-aligned, fixing with described air channel inwall, the dissipative muffler of annular; Described axial flow blower is provided with an automatic control end and a Non-follow control end, described axial flow blower is fixed on the indoor end in described air channel by fan supporter, be provided with the rubber blanket that 20mm is thick between described fan supporter and described axial flow blower, the air inlet of described axial flow blower is also equipped with steel plate grid.
2. a kind of substation transformer chamber ventilation heat abstractor according to claim 1, it is characterized in that: it also comprises a start and stop equipment, described start and stop equipment comprises temperature sensor, thermorelay, hand switch and A.C. contactor, described temperature sensor connects described thermorelay, described thermorelay connects the automatic control end of described axial flow blower, described hand switch connects the Non-follow control end of described axial flow blower, and described A.C. contactor is connected between the automatic control end of described axial flow blower and Non-follow control end.
3. a kind of substation transformer chamber ventilation heat abstractor according to claim 2, is characterized in that: described A.C. contactor is provided with a remote communication interface.
4. a kind of substation transformer chamber ventilation heat abstractor according to claim 1, it is characterized in that: described dissipative muffler is made up of the super glass wool encapsulant layer of thickness 10mm and the perforated plate mask steel plate be wrapped in outside described super glass wool encapsulant layer, the thickness of described perforated plate mask steel plate is 1mm, punching rate is 25%, and aperture is 6mm.
5. a kind of substation transformer chamber ventilation heat abstractor according to claim 1, it is characterized in that: described air channel is fixed on the wall of transformer chamber by air channel support, the position one_to_one corresponding of the dissipative muffler in the position of described air channel support and described air channel, is provided with the rubber blanket that 20mm is thick between the outer wall in described air channel support and described air channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420745626.0U CN204204566U (en) | 2014-12-02 | 2014-12-02 | A kind of substation transformer chamber ventilation heat abstractor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420745626.0U CN204204566U (en) | 2014-12-02 | 2014-12-02 | A kind of substation transformer chamber ventilation heat abstractor |
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| CN204204566U true CN204204566U (en) | 2015-03-11 |
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| CN201420745626.0U Active CN204204566U (en) | 2014-12-02 | 2014-12-02 | A kind of substation transformer chamber ventilation heat abstractor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104376976A (en) * | 2014-12-02 | 2015-02-25 | 国网上海市电力公司 | Ventilation and heat dissipation device of main transformer chamber of transformer substation |
| CN105742998A (en) * | 2016-04-08 | 2016-07-06 | 国网天津市电力公司 | Main transformer chamber ventilation device capable of noise reduction |
-
2014
- 2014-12-02 CN CN201420745626.0U patent/CN204204566U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104376976A (en) * | 2014-12-02 | 2015-02-25 | 国网上海市电力公司 | Ventilation and heat dissipation device of main transformer chamber of transformer substation |
| CN105742998A (en) * | 2016-04-08 | 2016-07-06 | 国网天津市电力公司 | Main transformer chamber ventilation device capable of noise reduction |
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