CN205536362U - Reduce air inlet system of hot pressing effect - Google Patents
Reduce air inlet system of hot pressing effect Download PDFInfo
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- CN205536362U CN205536362U CN201620228398.9U CN201620228398U CN205536362U CN 205536362 U CN205536362 U CN 205536362U CN 201620228398 U CN201620228398 U CN 201620228398U CN 205536362 U CN205536362 U CN 205536362U
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Abstract
The utility model relates to a reduce air inlet system of hot pressing effect, contain the power plant main building, upper portion is the operation layer in it, in being in the middle of the operation layer and interface, in establish plural hot blast blowpipe apparatus with interface top lateral wall, this hot blast blowpipe apparatus contains the tuber pipe that runs through the lateral wall, the inside air inlet machine of establishing of tuber pipe, set the type of the opening and close blast gate of the airtight effect of utensil on it, the air inlet elbow is connected to the tuber pipe outer end, the inner air intake of connecting, its efflux air intake that is adjustable speed and direction, this plural number hot blast blowpipe apparatus is in the lateral wall list, the horizontal evenly distributed of two or three -layer, still contain the steam turbine room in the main building and contain between the oxygen -eliminating device, its indoor lateral wall or roof are equipped with hot blast blowpipe apparatus, through the installation of different positions in main building hot blast blowpipe apparatus, outdoor cold air passes through hot blast blowpipe apparatus and gets into indoorly, effective room air temperature that reduces after mixing and hot pressing effect height, reduction boiler room in winter bottom is by the indoor a large amount of cold airs of door and window gap department's entering, the temperature of its indoor bottom can keep at normal within range.
Description
Technical field
This utility model is about the ventilating system of a kind of thermal power plant, a kind of air inlet system that can reduce thermal power plant's hot pressing function.
Background technology
The main building in thermal power plant is the use room installing the capital equipment such as steam turbine generator, boiler and relevant auxiliary equipment, and main building is large span, large spacing factory building.Current large and medium-sized thermal power plant, the height of steam turbine building is typically more than 30 meters, and the height of boiler room is generally about 70～95 meters.
As shown in Figure 1, severe cold, the summer ventilation of conventional power plant steam turbine building of cold district all use natural air inlet, the draft type of natural (or machinery) air draft, outdoor air enters indoor through the exterior window opened being located at the air-inlet window bottom steam turbine building and intermediate layer, process equipment and pipeline etc. distribute in absorption chamber waste heat and remaining wet after, the roof ventilator (or roof ventilator) being located on steam turbine building and oxygen-eliminating device roofing drain into outdoor.
And such structure, the shortcoming of heating and summer ventilation is as follows in the winter time.
1) main building space is tall and big, indoor equipment heat dissipation capacity is big, cause the biggest indoor pressure differential and temperature difference, it it is negative pressuren zone bottom indoor, substantial amounts of cold air under the effect of negative pressure from door, window, carry substantial amounts of cold at the imprecise gap such as hole and enter indoor, indoor top is zone of positive pressure, substantial amounts of room air under the effect of malleation from the window at top, roof ventilator, carry substantial amounts of heat at the imprecise gap such as roof ventilator and be discharged outdoor, produce extremely strong hot pressing function, building enclosure heat-insulating property and heat storage performance are poor, Winter heat supply load is big.
2) hot pressing function causes indoor plane temperature field uneven, and middle part temperature is high, and at outer wall, temperature is low, is minimum with temperature at each maintenance gate, and temperature also differs relatively big, icing, dew condensation phenomenon preferably occurs.
3) hot pressing function causes indoor temperature field up and down uneven, and upper temp is too high, and temperature of lower is too low, and Vertical Temperature Gradient is big, and at door, window and all kinds of gap, Air Infiltration is big.
4) the required ventiduct roadbed of Summer Indoor cooling is big.
Therefore, in the winter time due to the impact of the factor such as change of hot pressing function and thermograde, wanting to keep the temperature constant of main building operating layer and layers below within the scope of certain temperature, the cold air utilizing merely the heating systems such as radiator to heat infiltration as early as possible indoor is relatively difficult.In severe cold and the winter of cold district, the most effectively reduce air carry at the imprecise gaps such as door, window, hole under the effect of negative pressure substantial amounts of cold enter indoor, reduce indoor hot pressing effect, solve main building and reduce indoor heat consumption winter, prevent that indoor near-bottom temperature is too low, prevent indoor water frost crack pipe, while carrying out Winter protection, reduction heat supply in winter energy consumption, meet the needs of summer ventilation, be current problem demanding prompt solution.
Utility model content
This utility model is solved the technical problem that to be to provide a kind of air inlet system that can reduce thermal power plant's hot pressing function.
The technological means that this utility model is used is as described below.
A kind of air inlet system reducing hot pressing function, comprise main power house of power plant, this main building internal upper part is operating layer, for neutralizing interface in the middle of operating layer, neutralizing interface upper side wall and arrange plural number air-intake device, this air-intake device comprises the airduct running through sidewall, is provided with air inlet fan inside this airduct, described airduct outer end connects air inlet elbow, inner connection air inlet.
Described plural number air-intake device is in sidewall monolayer or double-deck or three levels distribution, and every layer of some air-intake device are uniformly distributed.
Described air inlet is the jet air inlet in adjustable speed and direction.
The keying type air-valve having airtight effect is arranged on described air inlet fan.
Maintenance pavement is set by described every layer of air-intake device.
Also comprising steam turbine building in main building, this steam turbine building sidewall or roof set air-intake device, set maintenance pavement by this air-intake device.
Also comprising between oxygen-eliminating device in main building, between this oxygen-eliminating device, sidewall or roof set air-intake device, set maintenance pavement by air-intake device.
The beneficial effects of the utility model are as follows.
1, the air-intake device of plural layer it is provided above at neutralization interface, outdoor cold air enters in boiler room by air-intake device, mix with the high-temperature hot air near air inlet, in making boiler room, mixed temperature reduces, i.e. indoor air temperature and hot pressing function height reduction, indoor, boiler room hot pressing function reduces so that is entered indoor cold air by door and window gap bottom boiler room winter and reduces in a large number, in the range of the temperature bottom its indoor can be maintained at normally.
2, near steam turbine building crane girder, between oxygen-eliminating device at the C row or at steam turbine building B row near plural number air-intake device is set, outdoor cold air enters indoor from air-intake device, mix with the high-temperature hot air near indoor air inlet, reduce the temperature of room air near air-intake device, temperature and the reduction of hot pressing function height because of room air, the hot pressing function minimizing that steam turbine building is indoor, make to be entered indoor cold air by gaps such as door, window, holes bottom steam turbine building in winter to reduce in a large number, in the range of the temperature bottom its indoor can be maintained at normally.Air-intake device is set between steam turbine building and oxygen-eliminating device, can play in donkey boiler room and the effect of air-intake device above interface, thus the effect reducing hot pressing function is reached optimal.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the summer ventilation of existing Power Plant Main House.
Fig. 2 is the structure chart of Power Plant Main House of the present utility model.
Fig. 3 is the amplification assumption diagram of air-intake device of the present utility model.
Detailed description of the invention
As in figure 2 it is shown, comprise main power house of power plant 1, top sets air grid 41.Main power house of power plant 1 is internal is bottom 3 and operating layer 4 from bottom to top, therebetween for operating layer platform, at this operating layer platform to the 1/2 of roof, is defined as the neutralization interface of perfect condition.And above-mentioned operating layer 4 and neutralize interface, the concept being known to the skilled person.
This utility model lays special stress on protecting a kind of air inlet system reducing hot pressing function, and it comprises at least one air-intake device 2 of the sidewall being arranged in main power house of power plant 1 and above interface.The amplification assumption diagram of air-intake device as shown in Figure 3, this air-intake device 2 comprises the airduct 21 running through sidewall, and this airduct 21 is internal is provided with air inlet fan 22, and this air inlet fan 22 can arrange the keying type air-valve having airtight effect.The outer end of airduct 21 connects air inlet elbow 23, and inner connection air inlet 24, this air inlet 24 can use the jet air inlet in adjustable speed and direction.
Several air-intake devices 2 above-mentioned can monolayer or double-deck or three levels distribution, every layer of number determining air-intake device according to actual needs, and the plural air-intake device of every layer be uniformly distributed setting.Or design distribution situation according to the situation of actual power factory.In most preferred embodiment shown in Fig. 2, neutralizing interface and be provided above upper and lower 2 layers of air-intake device, the air-intake device of lower floor preferably near neutralizing interface layout, can arrange maintenance pavement 5, in order to the maintenance of air-intake device and maintenance simultaneously at the position arranging air inlet system.But the setting of the above-mentioned air-intake device number of plies is no more than three layers, in order to avoid affecting attractive in appearance, the cost of increase building external envelope structure and operation, the maintenance cost of architectural appearance.
Be generally divided between steam turbine building, oxygen-eliminating device in Power Plant Main House 1 as shown in Figure 2, bunker bay and boiler room, between steam turbine building and oxygen-eliminating device, sidewall or roof can be provided with the air-intake device 2 of said structure.
The top of steam turbine building is provided with the steam turbine building roof ventilator 61 of air draft, steam turbine building is internally disposed steam turbine 62, top sets crane girder 63, and the most preferably place of installing of the air-intake device 2 arranged in steam turbine building is near crane girder 63, can arrange according to the situation horizontal homogeneous of crane girder 63.
Roof between oxygen-eliminating device installs roof ventilator 71 between the oxygen-eliminating device of air draft, can set one or a plurality of air-intake device 2 near oxygen-eliminating device internal between oxygen-eliminating device.
Above-mentioned Power Plant Main House is when actually used, and boiler room operating layer above boiler closed seal, more than neutralization interface, suitable position arranges air-intake device 2, and this device is closed summer.And (the outdoor calculating temperature of heating, the heat dissipation capacity of indoor equipment and the size etc. of hot pressing function) selects quantity and the ventilation of separate unit air inlet fan of air-intake device in winter according to the actual requirements, the keying type air-valve identical with blower fan open/close states is joined, in order to reduce the impact on boiler room bottom indoor temperature of the boiler room hot pressing function on air inlet fan.
Shown in Fig. 2, if neutralize the pressure head that interface above air inlet fan produces be P3 and P3 ', the hot pressing of indoor be P4 and P4 '.Now, the pressure head P3 and P3 ' that air inlet fan produces should be greater than hot pressing P4 and P4 ' indoor at air inlet system.Outdoor cold air enters in boiler room under the effect of air inlet fan pressure head P3 and P3 ', mix with the high-temperature hot air near air inlet, the temperature above neutralization interface is made to reduce after mixing, thus reduce indoor, boiler room hot pressing function, make to be entered indoor cold air by door and window gap bottom boiler room in winter to reduce in a large number, in the range of the temperature bottom its indoor can be maintained at normally.
In like manner, openable air-intake device in winter (summer is closed) is set near steam turbine building crane girder.And (outdoor heating calculates temperature, the heat dissipation capacity of indoor equipment and the size etc. of hot pressing function) selects quantity and the separate unit ventilation of air inlet system in winter according to the actual requirements.Winter arranges elongated being evenly arranged with air-intake device with steam turbine building A indicated along Fig. 2 and is preferred.Maintenance pavement is preferably set at the position arranging air-intake device, in order to the maintenance of air inlet fan, maintenance simultaneously.
If the pressure head that the air inlet fan arranged near steam turbine building crane girder produces is P7, the hot pressing of indoor is P8.The pressure head P7 that now air-intake device produces should be greater than at air inlet fan indoor hot pressing P8, and preferably have and certain go out wind velocity.Outdoor cold air enters in steam turbine building under the effect of air-intake device pressure head P7, mix with the high-temperature hot air near air inlet, reduce the temperature of room air near steam turbine building air inlet, hot pressing function in steam turbine building reduces, make to be entered indoor cold air by gaps such as door, window, holes bottom steam turbine building in winter to reduce in a large number, in the range of the temperature bottom its indoor can be maintained at normally.The most effectively above in donkey boiler room and interface, air-intake device plays common effect, thus the effect reducing hot pressing function is reached optimal.
In like manner, between the oxygen-eliminating device shown in Fig. 2, at (high-order when between oxygen-eliminating device arrange, when being arranged in C row with the partition wall of boiler room between oxygen-eliminating device) or steam turbine building B row, near (when the partition wall of steam turbine building and boiler room is arranged in B row), it is set openable air-intake device in winter (summer is closed) at the C row.And (outdoor heating calculates temperature, the heat dissipation capacity of indoor equipment and the size etc. of hot pressing function) selects quantity and the separate unit ventilation of air-intake device in winter according to the actual requirements.Winter is evenly arranged with the row of C along between oxygen-eliminating device (or B row) with air-intake device and is preferred.
If the pressure head that between oxygen-eliminating device, at C row or at steam turbine building B row, the neighbouring air-intake device arranged produces is P9, the hot pressing of indoor is P10.The pressure head P9 that now air-intake device produces should be greater than at air inlet fan indoor hot pressing P10, and preferably have and certain go out wind velocity.Outdoor cold air enters in oxygen-eliminating device under the effect of air-intake device pressure head P9, mix with the high-temperature hot air near indoor air inlet, reduce between oxygen-eliminating device the temperature of room air near air inlet, the hot pressing function minimizing that steam turbine building is indoor, make to be entered indoor cold air by door and window gap bottom steam turbine building in winter to reduce in a large number, in the range of the temperature bottom its indoor can be maintained at normally.The most effectively above in donkey boiler room and interface, air-intake device plays common effect, thus the effect reducing hot pressing function is reached optimal.
On the basis of said system framework, for reducing the setting of large bay buildings or structures as far as possible, to large bay buildings or structures necessary to process system, on the premise of meeting process system safe operation, be divided into several region the most as far as possible, with reduce architectural exterior-protecting construction heat loss and because of hot pressing function caused ± 0.00m layer temperature is on the low side, heating system is the hugest problem.As at cold district, boiler bottom is separated with air induction room etc. as far as possible；Boiler and side bunker bay are separated by offside coal bunker formula main building as far as possible.
Boiler room to severe cold area closed seal, when primary air fan or air induction room merge layout with boiler room, preferably at First air machine room or air induction room, segmentation wall is set with separated place, boiler room, it is contemplated that arrange (summer can open, winter can close) the vent window area meeting boiler room ventilation in summer needs.To cold or the boiler room of severe cold area closed seal, when boiler room, operating layer platform does not carry out tight closing, and when using the arrangement of side bunker bay, the preferably boundary at side bunker bay Yu boiler room arranges segmentation wall.Boiler room in summer, (summer can open, winter can close) vent window area of side bunker bay ventilation needs is met it is contemplated that arrange.Cold or severe cold area are supplied steam power plant, when thermal power plant unit be located at steam turbine building A row outer and merge with steam turbine building arrange time, thermal power plant unit and steam turbine building intersection preferably arrange segmentation wall, it is contemplated that arrange (summer can open, winter can close) the vent window area meeting steam turbine building ventilation in summer needs.
Main building (steam turbine building, boiler room) operating layer platform is carried out tight closing (being designed to open ventilation, closable temporary plugging in winter summer, such as reprint door, soft cover plate etc.) in winter；Main building (especially boiler room) is made to be formed with the layer that operates for more than the operating layer of boundary and operating layer following two subregion in the winter time, to reduce the height of main building hot pressing function, to reduce the hot pressing function that main building is indoor.Or the layer platform that operated boiler room carries out permanent tight closure so that it is formed more than with operating layer for the operating layer of boundary and operating layer following two ventilation subregion, to reduce the height of boiler room hot pressing function, to reduce the hot pressing function that boiler room is indoor.It is i.e. a ventilation subregion below boiler room operating layer platform, use natural air inlet, the draft type of natural exhaust, high side ventilation window under boiler room bottom air inlet window and operating layer platform is set, enters summer, ventilation window all opens ventilation, enter ventilation window winter and be turned off insulation, antifreeze.More than boiler room operating layer platform it is another ventilation subregion, natural air inlet, air draft and the coefficient draft type of air inlet system of the present utility model can be used, boiler room operating layer platform upper air-inlet window and boiler room roof ventilator are set, summer air-inlet window, roof ventilator all open ventilation, winter air-inlet window, roof ventilator be turned off insulation, antifreeze.
It addition, the main building external door that traffic volume is bigger should be arranged door socket, at the appropriate to the occasion warm air curtain that sets in door socket of having ready conditions to reduce the impact entering indoor cold air to indoor temperature.The main building external door (the less external door of traffic volume in winter) that open area is bigger is preferably taked seal approach winter, enters the cold air inside impact on indoor temperature to reduce.The main heat sink equipment indoor to main building and pipeline should carry out the insulation of outer surface.The temperature of the insulation construction outer surface after its insulation preferably controls between 40 DEG C～45 DEG C, in place with good conditionsi, and the temperature of heat dissipation equipment and heat insulation structure outer surface preferably less than 40 DEG C after insulation.One energy consumption that can reduce generating set, also can reduce main heat sink equipment and the heat dissipation capacity of heat dissipation of pipeline indoor in main building simultaneously, reduce the impact that hot pressing function is indoor on main building.
Claims (7)
1. the air inlet system reducing hot pressing function, comprise main power house of power plant (1), this main building (1) internal upper part is operating layer (4), for neutralizing interface in the middle of operating layer (4), it is characterised in that neutralize interface upper side wall and arrange plural number air-intake device (2), this air-intake device (2) comprises the airduct (21) running through sidewall, this airduct (21) is internal is provided with air inlet fan (22), and described airduct (21) outer end connects air inlet elbow (23), inner connection air inlet (24).
2. the air inlet system reducing hot pressing function as claimed in claim 1, it is characterised in that described plural number air-intake device (2) is in sidewall monolayer or double-deck or three levels distribution, and every layer of some air-intake device (2) is uniformly distributed.
3. the air inlet system reducing hot pressing function as claimed in claim 1, it is characterised in that described air inlet (24) is the jet air inlet in adjustable speed and direction.
4. the air inlet system reducing hot pressing function as claimed in claim 1, it is characterised in that described air inlet fan (22) is upper arranges the keying type air-valve having airtight effect.
5. the air inlet system reducing hot pressing function as claimed in claim 2, it is characterised in that described every layer of air-intake device (2) is other sets maintenance pavement (5).
6. the air inlet system reducing hot pressing function as claimed in claim 5, it is characterised in that main building also comprises steam turbine building in (1), and this steam turbine building sidewall or roof set air-intake device (2), this air-intake device (2) is other sets maintenance pavement (5).
7. the air inlet system reducing hot pressing function as claimed in claim 5, it is characterised in that main building also comprises between oxygen-eliminating device in (1), and between this oxygen-eliminating device, sidewall or roof set air-intake device (2), air-intake device (2) is other sets maintenance pavement (5).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620228398.9U CN205536362U (en) | 2016-03-23 | 2016-03-23 | Reduce air inlet system of hot pressing effect |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620228398.9U CN205536362U (en) | 2016-03-23 | 2016-03-23 | Reduce air inlet system of hot pressing effect |
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| CN205536362U true CN205536362U (en) | 2016-08-31 |
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| CN201620228398.9U Active CN205536362U (en) | 2016-03-23 | 2016-03-23 | Reduce air inlet system of hot pressing effect |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110563066A (en) * | 2019-09-06 | 2019-12-13 | 山东舜业压力容器有限公司 | Oxygen remover without head |
-
2016
- 2016-03-23 CN CN201620228398.9U patent/CN205536362U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110563066A (en) * | 2019-09-06 | 2019-12-13 | 山东舜业压力容器有限公司 | Oxygen remover without head |
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