CN104737923A - Winter fresh air system applicable to large-scale hog house in severe cold and cold regions - Google Patents
Winter fresh air system applicable to large-scale hog house in severe cold and cold regions Download PDFInfo
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- CN104737923A CN104737923A CN201510157421.XA CN201510157421A CN104737923A CN 104737923 A CN104737923 A CN 104737923A CN 201510157421 A CN201510157421 A CN 201510157421A CN 104737923 A CN104737923 A CN 104737923A
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- 241000287127 Passeridae Species 0.000 claims description 4
- 230000002265 prevention Effects 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 abstract description 10
- 238000009423 ventilation Methods 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 3
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 238000004321 preservation Methods 0.000 abstract 1
- 241000282898 Sus scrofa Species 0.000 description 61
- 238000010276 construction Methods 0.000 description 5
- 238000009413 insulation Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 3
- 230000009931 harmful effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 244000025254 Cannabis sativa Species 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- 206010059410 Faecaluria Diseases 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 206010035664 Pneumonia Diseases 0.000 description 1
- 241000283984 Rodentia Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 241000282887 Suidae Species 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 206010006451 bronchitis Diseases 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 208000023504 respiratory system disease Diseases 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Abstract
The invention relates to a winter fresh air system applicable to a large-scale hog house in severe cold and cold regions; the system is capable of effectively solving the problems of air ventilation of the hog house and heat preservation in winter; the technical scheme is as follows: the system comprises the hog house; the hog house is of a hollow structure which is composed of two longitudinal walls which are arranged at an interval along the long-axis direction of the hog house, transverse walls which are symmetrically arranged at two ends of the longitudinal walls along the short-axis direction of the hog house, and a roof at the top of the horizontal walls and the transverse walls; fresh air pipelines are arranged at the upper part of the inside of the hog house along the long-axis direction of the hog house and is of a rectangular hollow structure with openings at two ends; the openings at two ends serve as air inlets; two air inlet ends are mounted at the upper parts of the transverse walls at the corresponding sides and communicated with the outside of the hog house via penetrating holes in the transverse walls; a plurality of air delivery holes are formed on the front and rear sides of the fresh air pipeline; and blowers are respectively arranged on two longitudinal walls. The winter fresh air system is capable of reducing heating consumption of northern hog houses in winter; stable and uniform speed field and temperature field are formed in the hog house; the cost is reduced, and better heating and heat insulating effects can be obtained by using less energy consumption and material consumption.
Description
Technical field
The present invention relates to VMC, particularly a kind of severe cold and cold district scale pig house VMC in winter.
Background technology
Along with pig industry is intensive, the improving constantly of large-scale degree, the health in pig house and air pleasant degree require also to improve constantly.Especially the scale pig house of severe cold and cold district, winter temperature decline can make the growth performance of pig reduce, and affects economic benefit, needs to carry out heating and insulation to pig house.Meanwhile, in order to reduce winter heating energy consumption, usually adopt the way closing door and window.Because fecaluria is piled up, the factors such as the fermentation of feed pad grass, corrupt decomposition, can make to mix the toxic and harmfuls such as a large amount of ammonias, hydrogen sulphide in airtight pig house.Pig can be caused when harmful gas concentration is too high and produce the respiratory disease such as bronchitis, pneumonia, cause heavy economic losses to Swine Production.Therefore, must feed new wind to pig house in the winter time, to reduce harmful gas concentration, be up to state standards the health level required to make air quality in pig house (with CO2 concentration for mark).
At present, Chinese large-sized is raised pigs especially state-owned enterprise of enterprise, mostly adopts the supporting technology of the north america such as the U.S., Canada in the construction operation of scale pig house.The air vent mode of pig house building is: do not establish fresh air pipeline in house, and air-introduced machine installed by side exterior wall, and new wind entrance is open cornice, adopts wind pushing form under furred ceiling air port.The problem that this winter ventilation mode is brought is: (1) needs larger building floor height to install furred ceiling, utilizes the space above cornice and furred ceiling to form the air intake passage of new wind in winter.Due to the difference of domestic and international price of steel product, furred ceiling is installed the building cost of China's pig house is significantly increased.(2) because cornice is completely unlimited, the Insulation of roofing lost efficacy, and needed to be incubated furred ceiling, not only increased construction cost, also significantly reduce the seal of pig house, heating energy consumption is increased, and operating cost improves.(3) for ease of construction, air port is evenly equidistantly distribution on furred ceiling.Because blower fan is positioned at side wall, from each air port apart from different, cause each air outlet air quantity uneven, comparatively large near blower fan place resh air requirement, and in the middle part of pig house and close offside exterior wall place resh air requirement is less.This new wind distribution is unfavorable for forming temperature field in stable, uniform house, thus affects the growth performance of pig.
The new wind pattern in winter of existing furred ceiling+cornice air-supply reduces the seal of pig house, and cause heating energy consumption to increase, operating cost strengthens; She Neixin wind skewness, and produce uneven temperature field thus, local temperature is too low; Arrange band to open wide the furred ceiling of cornice to be applicable to summer in southern temperature district higher heat insulation, be unfavorable for Winter protection, add construction investment simultaneously.Therefore, its improvement and bring new ideas is imperative.
Summary of the invention
For above-mentioned situation, for overcoming the defect of prior art, the object of the present invention is just to provide a kind of severe cold and cold district scale pig house VMC in winter, effectively can solve the problem of pig house ventilation and Winter protection.
The technical scheme that the present invention solves is, comprise pig house, pig house is by the two stifled vertical walls along the alternate layout of pig house long axis direction, be symmetricly set on the cross wall (also known as gable) at vertical wall two ends along pig house short-axis direction and be arranged on vertical wall, the hollow structure that the roof (ceiling) at cross wall top is formed, in pig house, top is provided with fresh air pipeline along pig house long axis direction, fresh air pipeline is the rectangular hollow structure of both ends open, the opening at two ends is as air inlet, two air inlet end-rack are located at the cross wall top of respective side and the perforation on cross wall is connected with the outside of pig house, the two sides, front and back of fresh air pipeline have multiple wind pushing hole, two stifled vertical walls are respectively arranged with blower fan.
Novel structure of the present invention is unique, and advantages of simple, easily produces, and cost is low, increases the seal of pig house, reduces the winter heating heat consumption of northern pig house; Velocity field and the temperature field of stable and uniform is formed in pig house; Reducing costs, reach better heating, heat insulation effect with less energy resource consumption and material consumption, is the innovation on pig house ventilation warming system.
Accompanying drawing explanation
Fig. 1 is cross sectional plan view of the present invention.
Fig. 2 is that the A-A of Fig. 1 of the present invention is to cutaway view.
Fig. 3 is the front view (cavity length of pig house is L>20m) of fresh air pipeline of the present invention.
Fig. 4 is the partial enlarged drawing of Fig. 4 of the present invention.
Fig. 5 is that the C-C of Fig. 4 of the present invention is to cutaway view.
Fig. 6 is the end view of fresh air pipeline of the present invention.
The observed temperature data of Fig. 7 furred ceiling air supply mode test.
The observed temperature data of Fig. 8 VMC air supply mode test of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
Provided by Fig. 1-6, the present invention includes pig house, pig house is by the two stifled vertical walls 6 along the alternate layout of pig house long axis direction, be symmetricly set on the cross wall (also known as gable) 5 at vertical wall two ends along pig house short-axis direction and be arranged on vertical wall 6, the hollow structure that the roof (ceiling) at cross wall 5 top is formed, it is characterized in that, in pig house, top is provided with fresh air pipeline 4 along pig house long axis direction, fresh air pipeline 4 is the rectangular hollow structure of both ends open, the opening at two ends is as air inlet, two air inlet end-rack are located at the cross wall top of respective side and the perforation on cross wall is connected with the outside of pig house, the two sides, front and back of fresh air pipeline 4 have multiple wind pushing hole 2, two stifled vertical walls 6 are respectively arranged with blower fan 1.
For ensureing result of use, the air inlet at described fresh air pipeline 4 two ends is provided with sparrow prevention net 3;
Blower fan 1 on described often stifled vertical wall all has two, the layout that is centrosymmetric, is separately positioned on 1/4 place and 3/4 place of vertical wall, its centre-to-centre spacing ground 0.5-1m that blows;
Described fresh air pipeline has two groups that are centrosymmetric, its long 1/4 place and 3/4 place being separately positioned on cross wall to center line, and its bottom surface is far from ground >=2m;
Described fresh air pipeline 4 is square tubular structures that the PVC board being 25mm by thickness encloses the both ends open made;
Described wind pushing hole 2 is arranged on the first half of fresh air pipeline 4 short transverse; When described fresh air pipeline 4 is installed, base plate need keep the gradient of 2-4 ‰, slope aspect either side opening, is convenient to rainwater and discharges;
The cavity length of described pig house is that (unit is m) to L, and width is that (unit is m) to B, and ground is that (unit is m) to H, and the nominal air delivery of blower fan is that (unit is m to Q to the height of roof peak
3/ s, given data existing when blower fan dispatches from the factory),
Then the length of the fresh air pipeline in air channel is l >=L,
The length a in the cross section of fresh air pipeline (unit be m), width b (unit m) is respectively:
(unit is m to air channel cross-sectional area S
2) be:
S＝a×b (3)
The long l of wind pushing hole
1(unit be m), wide l
2(unit m) is respectively:
Fresh air pipeline every Lateral supply hole the number of openings n is:
In formula (6), A is wind pushing hole perforated area, and unit is m
2, design wind pushing hole wind speed v=1.5 ~ 1.8m/s; According to measured data, recommend wind speed 1.65m/s;
When the cavity length of pig house is L≤20m;
The layout of wind pushing hole is centrosymmetric along fresh air pipeline, increasing progressively from fresh air pipeline either end to the spacing in the direction at center, the length di of i-th wind pushing hole from end and the non-perforate part of air channel side wall surface between (i+1) individual (i+1≤N) wind pushing hole (unit is:
When the cavity length of pig house is L>20m;
The layout of wind pushing hole is centrosymmetric along fresh air pipeline, from fresh air pipeline either end to fresh air pipeline central party, the length of i-th non-perforate part of air channel side wall surface between wind pushing hole and (i+1) individual wind pushing hole be di (unit is:
In formula (7) and (8), d
0the longitudinal edge of the wind pushing hole wind pushing hole of first wind pushing hole and end (on the whole air channel) being fresh air pipeline two ends near end, air channel and fresh air pipeline end distance, d
0=0.5 ~ 1m, determines (can have the deviation within 5%) according to swinery position, and N is the perforate number from one end, air channel to center, for:
Arrange below in conjunction with the concrete size in specific embodiment and the specific embodiment of the present invention be described in further detail:
Embodiment 1
Pig house length L=7.5m; Pig house width B=3.5m; Ground is H=2.7m to the height of roof peak, and the nominal air delivery of blower fan is Q=0.097m
3/ s;
The length l=7.5m of the fresh air pipeline in air channel;
The length a=0.1m in the cross section of fresh air pipeline; , width b=0.07m;
The long l of wind pushing hole
1=0.12m; Wide l
2=0.01m;
Fresh air pipeline every Lateral supply hole the number of openings n=14; , wind pushing hole wind speed v=1.65m/s; d
0=0.5m;
The layout of wind pushing hole is centrosymmetric along fresh air pipeline, increasing progressively from fresh air pipeline either end to the spacing in the direction at center, the length of the non-perforate part of air channel side wall surface between the 1st wind pushing hole to N+1=8 wind pushing hole from end is respectively: 0.175m, 0.350m, 0.525m, 0.700m, 0.875m, 1.050m, 2.450m.
Embodiment 2
Pig house length L=18m; Pig house width B=6.5m; Ground is H=3.0m to the height of roof peak, and the nominal air delivery of blower fan is Q=0.433m
3/ s;
The length l=18m of the fresh air pipeline in air channel;
The length a=0.22m in the cross section of fresh air pipeline; , width b=0.14m;
The long l of wind pushing hole
1=0.24m; Wide l
2=0.02m;
Fresh air pipeline every Lateral supply hole the number of openings n=15; Wind pushing hole wind speed v=1.5m/s; d
0=0.5m;
The layout of wind pushing hole is centrosymmetric along fresh air pipeline, increasing progressively from fresh air pipeline either end to the spacing in the direction at center, the length of the non-perforate part of air channel side wall surface between the 1st wind pushing hole to N+1=8 wind pushing hole from end is respectively: 0.478m, 0.957m, 1.435m, 1.913m, 2.391m, 2.870m, 3.348m, 3.826m.
Embodiment 3
Pig house length L=27m; Pig house width B=9.5m; Ground is H=3.3m to the height of roof peak, and the nominal air delivery of blower fan is Q=0.95m
3/ s;
The length l=27m of the fresh air pipeline in air channel;
The length a=0.33m in the cross section of fresh air pipeline; , width b=0.21m;
The long l of wind pushing hole
1=0.36m; Wide l
2=0.03m;
Fresh air pipeline every Lateral supply hole the number of openings n=13; Wind pushing hole wind speed v=1.8m/s; d
0=0.5m;
The layout of wind pushing hole is centrosymmetric along fresh air pipeline, increasing progressively from fresh air pipeline either end to the spacing in the direction at center, the length of the non-perforate part of air channel side wall surface between the 1st wind pushing hole to N+1=7 wind pushing hole from end is respectively: 1.781m, 1.781m, 5.342m, 5.342m, 8.904m, 8.904m.
During practice of construction, each size is accurate to centimetre.
Applicant it is to be noted; it is above-mentioned that what point out is only a kind of embodiment; be not meant to limit the protection domain of the application, every use be equal to or be equal to alternative means make the protection domain that the technical scheme identical in essence with technical scheme all belong to the application.
When the present invention uses, open blower fan 1, new wind enters in the body of fresh air pipeline from the two ends of fresh air pipeline, then enters inside pig house from wind pushing hole, and compared with prior art, the present invention has the following advantages:
1. in pig house, install fresh air pipeline, airduct is arranged in indoor roof (ceiling) below, and adopt the thick PVC board of 25mm, light weight is inexpensive, and be easy to buying, transport, rectangular duct is easy to manufacture, assemble, and separately need not establish furred ceiling, reduces building height and cost;
2. the size in airduct sidewall air supply hole and spacing obtain according to applicant's repetition test, thus reach pig house Air Quantity Required and wind speed, adopt Central Symmetry mode, reach the object of balanced ventilation;
3. airduct two ends are air inlet, wind pushing hole is positioned at top position, airduct two sides, compared with blowing with under furred ceiling side, the peripheral structure of pig house not only can be made to keep good seal, better mixing can be had with Indoor Thermal air new wind in winter (outdoor cold wind) before arrival pig house bottom simultaneously, avoid cold wind and directly blow to pig zone of action;
4. for preventing rain, snow intrusion airduct, certain gradient need be had towards air inlet when airduct base plate is installed, and entering with protection against rodents, sparrow in two ends air inlet installation sparrow prevention net.
The present invention is through repetition test, all obtain identical or akin result, test and respectively monitoring point is arranged in 0.5 meter of and air inlet upright position 0.5 meter of, inside 1m ground on the ground to center, the inside 1m in air outlet (fan) upright position in pig house, by the result of data that collects as shown in Figure 7,8, can clearly be found out by result of the test:
Under identical building size condition, the pig house that initial temperature is identical, after 20-30 minute, temperature reaches stable, air supply mode of the present invention not only to be blown high 2-3 DEG C than furred ceiling in the temperature of pig fowl behaviour area, the more important thing is that animal house diverse location can obtain more uniform temperature distribution, the present invention increases the seal of pig house, reduces the winter heating heat consumption of northern pig house; Velocity field and the temperature field of stable and uniform is formed in pig house; Reduce costs, reach better heating, heat insulation effect with less energy resource consumption and material consumption, easy to use, effective, there is good Social and economic benef@.
Claims (7)
1. a severe cold and cold district scale pig house VMC in winter, comprise pig house, pig house is by the two stifled vertical walls (6) along the alternate layout of pig house long axis direction, be symmetricly set on the cross wall (5) at vertical wall two ends along pig house short-axis direction and be arranged on vertical wall (6), the hollow structure of the roof formation at cross wall (5) top, it is characterized in that, in pig house, top is provided with fresh air pipeline (4) along pig house long axis direction, the rectangular hollow structure that fresh air pipeline (4) is both ends open, the opening at two ends is as air inlet, two air inlet end-rack are located at the cross wall top of respective side and the perforation on cross wall is connected with the outside of pig house, the two sides, front and back of fresh air pipeline (4) have multiple wind pushing hole (2), two stifled vertical walls (6) are respectively arranged with blower fan (1).
2. severe cold according to claim 1 and cold district scale pig house VMC in winter, is characterized in that, the air inlet at described fresh air pipeline (4) two ends is provided with sparrow prevention net (3).
3. severe cold according to claim 1 and cold district scale pig house VMC in winter; it is characterized in that; blower fan (1) on described often stifled vertical wall all has two; the layout that is centrosymmetric; be separately positioned on 1/4 place and 3/4 place of vertical wall, its centre-to-centre spacing ground 0.5-1m that blows.
4. severe cold according to claim 1 and cold district scale pig house VMC in winter; it is characterized in that; described fresh air pipeline has two groups that are centrosymmetric, and its long 1/4 place and 3/4 place being separately positioned on cross wall to center line, its bottom surface is far from ground >=2m.
5. severe cold according to claim 1 and cold district scale pig house VMC in winter, is characterized in that, described fresh air pipeline (4) is the square tubular structure that the PVC board being 25mm by thickness encloses the both ends open made.
6. severe cold according to claim 1 and cold district scale pig house VMC in winter, is characterized in that, described wind pushing hole (2) is arranged on the first half of fresh air pipeline (4) short transverse.
7. severe cold according to claim 1 and cold district scale pig house VMC in winter, is characterized in that, the cavity length of described pig house is L, and width is B, and ground is H to the height of roof peak, and the nominal air delivery of blower fan is Q,
Then the length of the fresh air pipeline in air channel is l >=L,
Length a, the width b in the cross section of fresh air pipeline are respectively:
Air channel cross-sectional area S is:
S＝a×b
(3)
The long l of wind pushing hole
1, wide l
2be respectively:
Fresh air pipeline every Lateral supply hole the number of openings n is:
In formula (6), A is wind pushing hole perforated area, unit m
2, design wind pushing hole wind speed v=1.5 ~ 1.8m/s;
When the cavity length of pig house is L≤20m;
The layout of wind pushing hole is centrosymmetric along fresh air pipeline, is increasing progressively from fresh air pipeline either end to the spacing in the direction at center, and the length di of i-th from end the non-perforate part of air channel side wall surface between wind pushing hole and (i+1) individual wind pushing hole is:
When the cavity length of pig house is >20m, the layout of wind pushing hole is centrosymmetric along fresh air pipeline, from fresh air pipeline end, to in fresh air pipeline central party, to be di be the length of i-th non-perforate part of air channel side wall surface between wind pushing hole and (i+1) individual wind pushing hole:
In formula (7) and (8), d
0the longitudinal edge of the wind pushing hole wind pushing hole of first wind pushing hole and end (on the whole air channel) being fresh air pipeline two ends near end, air channel and fresh air pipeline end distance, d
0=0.5 ~ 1m, determine according to swinery position, N is the perforate number from one end, air channel to center, for:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510157421.XA CN104737923B (en) | 2015-04-03 | 2015-04-03 | Severe cold and cold district scale pig house VMC (Ventilation Mechanical Control System) in winter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510157421.XA CN104737923B (en) | 2015-04-03 | 2015-04-03 | Severe cold and cold district scale pig house VMC (Ventilation Mechanical Control System) in winter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104737923A true CN104737923A (en) | 2015-07-01 |
| CN104737923B CN104737923B (en) | 2016-11-30 |
Family
ID=53578648
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510157421.XA Expired - Fee Related CN104737923B (en) | 2015-04-03 | 2015-04-03 | Severe cold and cold district scale pig house VMC (Ventilation Mechanical Control System) in winter |
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Cited By (4)
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| CN106386518A (en) * | 2016-11-28 | 2017-02-15 | 北京天福昌运制冷设备安装股份有限公司 | Environment-friendly heating, ventilation and heat exchange system for cultivation house and cultivation house |
| CN107242141A (en) * | 2017-08-16 | 2017-10-13 | 青岛大牧人机械股份有限公司 | A kind of northern large-scale cultivation pig house |
| CN107624663A (en) * | 2017-09-08 | 2018-01-26 | 青岛大牧人机械股份有限公司 | A kind of southern large-scale cultivation pig house |
| CN109963441A (en) * | 2019-03-06 | 2019-07-02 | 北京达佳互联信息技术有限公司 | A kind of cooling system of computer room |
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| CN109963441A (en) * | 2019-03-06 | 2019-07-02 | 北京达佳互联信息技术有限公司 | A kind of cooling system of computer room |
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| CN104737923B (en) | 2016-11-30 |
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