CN104596586A - Ventilation and air conditioning system performance detection method through prefabricated measuring nodes - Google Patents
Ventilation and air conditioning system performance detection method through prefabricated measuring nodes Download PDFInfo
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- CN104596586A CN104596586A CN201510039033.1A CN201510039033A CN104596586A CN 104596586 A CN104596586 A CN 104596586A CN 201510039033 A CN201510039033 A CN 201510039033A CN 104596586 A CN104596586 A CN 104596586A
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Abstract
The invention discloses a ventilation and air conditioning system performance detection method through prefabricated measuring nodes. The ventilation and air conditioning system performance detection method through the prefabricated measuring nodes is characterized by comprising the following steps of 1 determining a measuring section; 2 prefabricating the measuring nodes; 3 installing the measuring nodes; 4 testing a system, wherein detection points of the measuring node which is installed at a rectangular large section air pipe are arranged through a Tchebycheff point arrangement method and the measuring node which is installed at detection points of a round or oval spiral air pipe are arranged in a homalographic point arrangement method. The ventilation and air conditioning system performance detection method through the prefabricated measuring nodes has the advantages that 1 the detection point positions are accurate and the measuring accuracy is high; the structural design of the measuring nodes and an arrangement method of the measuring points are scientific and reasonable; 3 pollution to ventilating air conditioning system mediums and damage to air pipes are avoided; 4 the testing period and detection costs are obviously reduced; 5 conditions promoting civilized construction and safe production are created.
Description
Technical field
The present invention relates to a kind of method detecting heating ventilation and air-conditioning system performance, be specifically related to a kind of method adopting prefabricated measurement joint detection heating ventilation and air-conditioning system performance, belong to air grid optimization technical field of construction.
Background technology
GB50243 " code for acceptance of construction quality of conditioning works ", GB50738 " air grid optimization job specifications " and GB50591 " toilet's construction and acceptance specification " mandatory provision, heating ventilation and air-conditioning system will carry out comprehensive effectiveness mensuration and adjustment will carry out system debug, completion before completion of works after, whether reaches re-set target with check system.
At present, the method measuring heating ventilation and air-conditioning system air parameter conventional has " airduct method " and " air port method ", because " air port method " cannot statistical system leak out in actual applications, thus in actual debugging detection multiplex " airduct method ".
In recent years, heating ventilation and air-conditioning system " "four news" (new ideas " technology continues to bring out, air duct structure and material be science and variation more, except traditional metal foil airduct, the compound substance airducts such as the nonmetal airduct such as FRIM, U-PVC and aluminium foil polyurethane also obtain widespread use with its exclusive characteristic.For meeting the requirement of energy saving building, these airduct surfaces cover heat insulating construction mostly.
Therefore, when ventilation, air-conditioning system air-quantity measuring, as still adopted in current industry conventional on-the-spot reconnaissance, offering the method for measured hole, cannot avoid in Tapping procedures damage heat insulation layer, perforate chip flies in pipe, airduct local strength is reduced and reinforcement difficulty and a series of construction Difficulties such as perforate efficiency is low, security risk is high in the many places perforate of same cross section.
Summary of the invention
For overcoming the defect that conventional detection routines and technique produce, the object of the present invention is to provide a kind of method for detecting heating ventilation and air-conditioning system performance, high, the easy construction of the method measuring accuracy, cost be low, it is little to pollute, and can be good at adapting to the related request of the development of novel wind tube material, green building and building energy conservation.
In order to realize above-mentioned target, the present invention adopts following technical scheme:
Adopt the prefabricated method measuring joint detection heating ventilation and air-conditioning system performance, it is characterized in that, comprise the following steps:
(1), determine Measure section: in the system Deepen Design stage, the new wind section of air-conditioner set, primary retirn air section, secondary return air section, exhaustion section, air supply section and air-line system main pipe, arm pre-determine the position of Measure section;
(2), prefabricated measurement is saved: measure the shape of abridged edition body and the shape of specification and adjacent airduct and specification and be consistent, the sidewall of body is formed with some measured holes, and measured hole place is provided with measured hole seat, and measured hole seat carries out shutoff by measured hole plug;
(3), joint is installed and measured: in the Pipe installing stage of heating ventilation and air-conditioning system, according to the position of predetermined Measure section, in Pipe installing, synchronously install and measure joint;
(4), system testing: detecting instrument is arranged on via measured hole seat and measures on joint, and carry out dielectric sample selective examination by the detect aperture measured on joint;
For the measurement joint being arranged on airduct place, rectangle heavy in section, Qie Beiqiefu method of layouting is taked to arrange check point;
For the measurement joint being arranged on circle or elliptical spiral airduct place, homalographic method of layouting is taked to arrange check point.
Aforesaid employing is prefabricated measures the method that joint detects heating ventilation and air-conditioning system performance, it is characterized in that, in step (1), comprehensively arranges on the position that may affect the adjacent special pipeline measuring joint installation and checkout.
Aforesaid employing is prefabricated measures the method that joint detects heating ventilation and air-conditioning system performance, it is characterized in that, in step (1), aforementioned Measure section is not less than five times of calibers apart from the distance of front shock resistance parts, and the distance apart from rear shock resistance parts is not less than twice caliber.
Aforesaid employing is prefabricated measures the method that joint detects heating ventilation and air-conditioning system performance, it is characterized in that, in step (2), the material of aforementioned measurement joint is identical with the material of system airduct.
Aforesaid employing is prefabricated measures the method that joint detects heating ventilation and air-conditioning system performance, it is characterized in that, in step (2),
For nonmetal air-line system and compound substance air-line system, aforementioned measurement joint adopts galvanized steel plain sheet to make.
Aforesaid employing is prefabricated measures the method that joint detects heating ventilation and air-conditioning system performance, it is characterized in that, for the system of conveying containing acid, alkali, oil, Korrosionsmedium, the inside surface of the measurement joint adopting galvanized steel plain sheet to make is coated with composite protection layer.
Aforesaid employing is prefabricated measures the method that joint detects heating ventilation and air-conditioning system performance, and it is characterized in that, in step (2), the outer setting measuring joint has thermal insulation material.
Aforesaid employing is prefabricated measures the method that joint detects heating ventilation and air-conditioning system performance, it is characterized in that, in step (3),
For nonmetal air-line system, aforementioned measurement joint adopts angle steel flange to be connected with air duct flange.
Aforesaid employing is prefabricated measures the method that joint detects heating ventilation and air-conditioning system performance, it is characterized in that, in step (3), for compound substance air-line system, aforementioned measurement joint takes the socket connection of work shape with adjacent airduct, and aforementioned measure joint measured hole seat under reach inside composite plate, measured hole seat inside composite plate with larger flange, said flange one week chamfering.
Aforesaid employing is prefabricated measures the method that joint detects heating ventilation and air-conditioning system performance, it is characterized in that, in step (3), for compound substance air-line system, the aforementioned measured hole seat arranged outside measuring joint has compensation ring, and aforementioned compensation ring is fixed to outside composite plate by round nut.
Usefulness of the present invention is:
(1), check point position is accurate, and measuring accuracy is high
Start with from the engineering Deepen Design stage, the Specification requirement detected according to heating ventilation and air-conditioning system performance, pre-determines the prefabricated installation site saved in heating ventilation and air-conditioning system pipeline of measuring, avoids the on-the-spot randomness selected.
(2) structural design and the point layout method of, measuring joint are more scientific and reasonable
For the measurement joint being arranged on airduct place, rectangle heavy in section, Qie Beiqiefu method of layouting is taked to arrange check point; For the measurement joint being arranged on circle or elliptical spiral airduct place, homalographic method of layouting is taked to arrange check point.
According to analysis and engineering practice, Qie Beiqiefu method of layouting makes testing result closer to medium actual performance under the condition reducing the number of openings, especially detects elliptical spiral airduct dielectric behavior parameter and provides referential on-the-spot test method.
(3) pollution to ventilation and air conditioning system medium and the damage to airduct, is avoided
The chip produced when measuring joint perforate is very easily cleaned out in a pre-installation, effectively prevent metal in high level clean room and measure the metal flying chip of joint perforate generation to the damage of high efficiency particulate air filter, and the compound substance such as the nonmetal airduct such as fiberglass and U-PVC and glass, glass magnesium, phenolic aldehyde aluminium foil measures joint because of the on-the-spot perforate of intensity low not easily employing electric tool, even if reluctantly perforate also can because of chip, the dust pollution system produced, the defect such as even can cause sheet material breakage, premature aging, leak out.
(4), test duration and testing cost obviously reduce
Measure joint Deepen Design synchronous with airduct, making, installation, directly can test, eliminate the operations such as on-the-spot reconnaissance, perforate, repairing insulation, the perforate facility caused due to cross pipe-line operation after effectively overcoming airduct installation are difficult to the defect of constructing; Significantly reduce and detect cooperation personnel, effectively reduce Cooling and Heat Source and support equipment energy consumption in debug process.
(5), for promotion civilized construction, safety in production create condition
The on-the-spot Tapping procedures high and medium operation that adopted this engineering method to evade, mechanical wounding, noise and dust pollution and multi-specialized crossed construction equivalent risk factor; Contribute to improving finished product protection and impression quality; Be convenient to demolition and maintenance.
Accompanying drawing explanation
Fig. 1 is the layout schematic diagram of heating ventilation and air-conditioning systematic survey section in engineering method of the present invention;
Fig. 2 is the structure diagram measuring joint in metal bellows system;
Fig. 3 is the structure diagram measuring joint in non-metal bellows system;
Fig. 4 is the structure diagram measuring joint in compound substance air-line system;
Fig. 5 is the layout schematic diagram measuring check point in joint.
The implication of Reference numeral in figure: 1-wind regime, 2-bend muffler, 3-main, 4-skew T, 5-arm, the threeway of 6-Y type, 7-air port, 8-metal bellows tube coupling, 9-measures abridged edition body, and 10-is plate flange altogether, 11-spring clamp, 12-measured hole seat, 13-measured hole plug, 14-self-tapping screw, 15-jackscrew card, 16-angle steel flange, the nonmetal airduct tube coupling of 17-, 18-compound substance airduct tube coupling, 19-measured hole, 20-compensation ring, 21-round nut, d
1, d
2represent caliber, arrow represents that medium flows to.
Embodiment
Method of the present invention, its technological principle is as follows:
Determine the prefabricated installation site saved in heating ventilation and air-conditioning system pipeline of measuring in the engineering Deepen Design stage, under batch production condition, Prefabrication measures joint, synchronously installs and measures joint in the Pipe installing stage of heating ventilation and air-conditioning system.For the measurement joint being arranged on airduct place, rectangle heavy in section, preferred Qie Beiqiefu method of layouting arranges check point; For the measurement joint being arranged on circle or elliptical spiral airduct place, preferred homalographic method of layouting arranges check point.
Method of the present invention, under the prerequisite ensureing measuring accuracy, overcomes the shortcomings such as the traditional handicraft construction that on-the-spot perforate brings on finished product airduct is difficult, work efficiency is low, cost is high, pollution is large, point layout method is single, finished product is caused to damage, security risk is high.
Below in conjunction with the drawings and specific embodiments, concrete introduction is done to method of the present invention.
One, Measure section is determined
In the system Deepen Design stage, according to the determination principle of Measure section, the new wind section of air-conditioner set, primary retirn air section, secondary return air section, exhaustion section, air supply section and air-line system main pipe, arm pre-determine the position of Measure section.And comprehensively arrange in the position that may affect the adjacent special pipeline measuring joint installation and checkout.
The determination principle of Measure section is: Measure section is not less than five times of calibers apart from the distance of front shock resistance parts, and the distance apart from rear shock resistance parts is not less than twice caliber.This, by reducing the impact of medium turbulent flow on accuracy in detection in pipe, provides an equal DC fields to reeve formula instrument as far as possible.
As shown in Figure 1, namely between A and B, arbitrary section all can be used as the Measure section of main 3, and between C and D, arbitrary section all can be used as the Measure section of arm 5.The concrete position of Measure section is preferably arranged in each special pipeline relative loose, be convenient to the position measured.
After the position of Measure section is determined, the overall length of forward and backward pipeline can be saved by computation and measurement, and according to pipeline material specification determination airduct tube coupling length and tube coupling quantity.
Two, prefabricated measurement joint
When joint is measured in design, main consideration institute detection system pipe material, pumped (conveying) medium, section configuration, size and connected mode etc.
1, the shape of joint is measured
Measure the shape of abridged edition body and the shape of specification and adjacent airduct and specification to be consistent.
With reference to Fig. 2 and Fig. 3, the sidewall of measurement abridged edition body 9 is formed with some measured holes, and measured hole place is provided with measured hole seat 12, and measured hole seat 12 carries out shutoff by measured hole plug 13.
The structural shape of measured hole seat and plug, adopts the structural shape and size recommended in national building standard design atlas 06K131 " airduct measured hole and inspection door ".
2, the material of joint is measured
For metal bellows system, the material measuring joint is identical with the material of system airduct.
For nonmetal air-line system and compound substance air-line system, the material measuring joint both can be identical with the material of system airduct, again can be not identical with the material of system airduct, such as: adopt galvanized steel plain sheet to make and measure joint.
When measuring joint material selection galvanized steel plain sheet, consider the some lost offering sheet material rigidity after detect aperture, so thickness of slab can be chosen to be 1.2 millimeters.For the system of conveying containing acid, alkali, oil, Korrosionsmedium, the inside surface measuring joint should spray composite protection layer.
The outer setting measuring joint has thermal insulation material.The selection and operation of thermal insulation material, should meet GB50738 " air grid optimization job specifications " 13.4 clause regulations, should note the construction quality at flange position especially.
3, type of attachment
For metal bellows system, as shown in Fig. 2 (A) and Fig. 2 (B), measuring joint adopts plate flange 10 or angle steel flange 16 to be altogether connected with adjacent air duct flange, when employing is total to plate flange 10, as shown in Fig. 2 (A), plate flange 10 is connected with adopting spring clamp 11 or jackscrew card 15 between air duct flange altogether.Measure joint flange specification identical with air duct flange specification, and meet relevant criterion requirement.
For nonmetal air-line system, as shown in Figure 3, measure joint and adopt angle steel flange 16 to be connected with air duct flange, angle steel flange is identical with air duct flange specification, and meets relevant criterion requirement, as shown in Figure 3.
For compound substance air-line system, as shown in Figure 4, measure joint and take the socket connection of work shape with adjacent airduct.
Because within one week, being furnished with multiple measured hole at measurement joint, particularly heavy in section, large-sized compound substance are measured to joint and offered measured hole continuously and make composite plate strength reduction, so the measured hole seat 12 measuring joint is designed to down reach inside composite plate, and measured hole seat 12 is also with larger flange, to combine with the compensation ring 20 outside measured hole seat 12 and to play encapsulating measured hole and strengthening action, compensation ring 20 is fixed by round nut 21, simultaneously in flange one week chamfering of measured hole seat 12, to reduce the disturbance of measured hole seat 12 to medium in pipe.
When adopting the prefabricated measurement of this engineering method to save, at measurement abridged edition body, particularly can measure position joint spreading materials accurately being determined each measured hole in circle, and process measured hole by line location, then complete bending or the volume sired results sequence of measurement joint.Because measured hole position is accurate, make measurement result closer to actual parameter.
Three, joint is installed and measured
In the Pipe installing stage of heating ventilation and air-conditioning system, according to the position of predetermined Measure section, in Pipe installing, synchronously install and measure joint.
Measure joint installation and should meet GB50738-2011 " air grid optimization job specifications " relevant regulations.
Four, system testing
After measuring joint installation, treat that the trial run of system unit is qualified and namely possess test condition.
Specification and the suitable detecting instrument of precision is selected for the system performance parameter that will test, being arranged on via measured hole seat by detecting instrument measures on joint, and carry out dielectric sample selective examination by the detect aperture measured on joint, air parameter can be carried out (as gas velocity by check point, temperature, relative humidity etc.) mensuration, the position of check point and quantity, fully should reflect the velocity of medium distribution in pipeline, should not select too much again, otherwise increase the difficulty implemented, according to the way of recommendation of standard GB/T 50243 and international standard ISO3966, in conjunction with test practice for many years, be described below by rectangular tube and pipe:
(1), for the measurement joint being arranged on airduct place, rectangle heavy in section, Qie Beiqiefu method of layouting is taked to arrange check point.
For reducing the impact high on indoor net layer, rectangular air duct mostly is Gao Xiang little, wide to large Flat air pipe, therefore the shape measuring joint is also Gao Xiang little, wide to large flat, consistent with the form trait of airduct.
Now, according to traditional equal-area method, the cross section measuring joint is divided into several equal≤200 × 200mm small bores, because its depth-width ratio difference is comparatively large, accuracy in detection can be reduced because the check point of short transverse is not enough.
" Qie Beiqiefu layout method " that recommend due to international standard ISO3966 takes weighting, so it is more reasonable to make rectangle measure the measuring points placement of joint.
The measuring points placement that rectangle measures joint is shown in Fig. 5 (A).
(2), for the measurement joint being arranged on circle or elliptical spiral airduct place, homalographic method of layouting is taked to arrange check point.
In recent years, along with the development of circular duct forming technique, round screw thread airduct is elliptical spiral airduct particularly, because it takes into account the impact little and circular duct medium flow resistance little advantage of rectangular air duct on building floor height simultaneously, obtains a wide range of applications.
Take homalographic method of layouting to arrange check point for the measurement joint being arranged on circle or elliptical spiral airduct place, domestic and international relevant criterion and document are all without specification and report, and it is blank that the scheme that the present invention proposes has filled up industry.
Because elliptical spiral airduct two lateral section is similar to semicircle, respectively to measure-alike, homalographic method of layouting is adopted to arrange that check point can reach the uniform effect of check point preferably.
Meanwhile, the center section of elliptical spiral airduct, also close to square, is also be applicable to adopting homalographic method of layouting to arrange the prerequisite of check point.
The oval measuring points placement measuring joint refers to Fig. 5 (B).
After dielectric sample selective examination terminates, testing result is inserted record sheet card, and carry out data processing and obtain net result after calculating, again by testing result and judgment criteria comparison, if testing result and expected design differ by more than permissible variation, undertaken adjusting until reach designing requirement by system fading margin valve, thus air-conditioner set is in operation reach economy and practical purpose.
Engineering method of the present invention is applicable to the adjustment and measurement of air grid optimization system air parameter.
Through practical proof, obtain in the multinomial engineering that method of the present invention is undertaken the construction of in this group and apply and improve raising, achieve obvious Social benefit and economic benefit, there is good application value.
It should be noted that, above-described embodiment does not limit the present invention in any form, the technical scheme that the mode that all employings are equal to replacement or equivalent transformation obtains, and all drops in protection scope of the present invention.
Claims (10)
1. adopt the prefabricated method measuring joint detection heating ventilation and air-conditioning system performance, it is characterized in that, comprise the following steps:
(1), determine Measure section: in the system Deepen Design stage, the new wind section of air-conditioner set, primary retirn air section, secondary return air section, exhaustion section, air supply section and air-line system main pipe, arm pre-determine the position of Measure section;
(2), prefabricated measurement is saved: measure the shape of abridged edition body and the shape of specification and adjacent airduct and specification and be consistent, the sidewall of body is formed with some measured holes, and measured hole place is provided with measured hole seat, and measured hole seat carries out shutoff by measured hole plug;
(3), joint is installed and measured: in the Pipe installing stage of heating ventilation and air-conditioning system, according to the position of predetermined Measure section, in Pipe installing, synchronously install and measure joint;
(4), system testing: detecting instrument is arranged on via measured hole seat and measures on joint, and carry out dielectric sample selective examination by the detect aperture measured on joint;
For the measurement joint being arranged on airduct place, rectangle heavy in section, Qie Beiqiefu method of layouting is taked to arrange check point;
For the measurement joint being arranged on circle or elliptical spiral airduct place, homalographic method of layouting is taked to arrange check point.
2. employing according to claim 1 is prefabricated measures the method that joint detects heating ventilation and air-conditioning system performance, it is characterized in that, in step (1), comprehensively arranges on the position that may affect the adjacent special pipeline measuring joint installation and checkout.
3. employing according to claim 1 and 2 is prefabricated measures the method that joint detects heating ventilation and air-conditioning system performance, it is characterized in that, in step (1), described Measure section is not less than five times of calibers apart from the distance of front shock resistance parts, and the distance apart from rear shock resistance parts is not less than twice caliber.
4. employing according to claim 1 is prefabricated measures the method that joint detects heating ventilation and air-conditioning system performance, it is characterized in that, in step (2), the material of described measurement joint is identical with the material of system airduct.
5. employing according to claim 1 is prefabricated measures the method that joint detects heating ventilation and air-conditioning system performance, it is characterized in that, in step (2),
For nonmetal air-line system and compound substance air-line system, described measurement joint adopts galvanized steel plain sheet to make.
6. employing according to claim 5 is prefabricated measures the method that joint detects heating ventilation and air-conditioning system performance; it is characterized in that; for the system of conveying containing acid, alkali, oil, Korrosionsmedium, the inside surface of the measurement joint adopting galvanized steel plain sheet to make is coated with composite protection layer.
7. employing according to claim 1 is prefabricated measures the method that joint detects heating ventilation and air-conditioning system performance, and it is characterized in that, in step (2), the outer setting measuring joint has thermal insulation material.
8. employing according to claim 1 is prefabricated measures the method that joint detects heating ventilation and air-conditioning system performance, it is characterized in that, in step (3),
For nonmetal air-line system, described measurement joint adopts angle steel flange to be connected with air duct flange.
9. employing according to claim 1 is prefabricated measures the method that joint detects heating ventilation and air-conditioning system performance, it is characterized in that, in step (3), for compound substance air-line system, described measurement joint takes the socket connection of work shape with adjacent airduct, and described measure joint measured hole seat under reach inside composite plate, measured hole seat inside composite plate with larger flange, described flange one week chamfering.
10. employing according to claim 9 is prefabricated measures the construction method that joint detects heating ventilation and air-conditioning system performance, it is characterized in that, in step (3), for compound substance air-line system, the described measured hole seat arranged outside measuring joint has compensation ring, and described compensation ring is fixed to outside composite plate by round nut.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510039033.1A CN104596586B (en) | 2015-01-26 | 2015-01-26 | Ventilation and air conditioning system performance detection method through prefabricated measuring nodes |
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| CN201510039033.1A CN104596586B (en) | 2015-01-26 | 2015-01-26 | Ventilation and air conditioning system performance detection method through prefabricated measuring nodes |
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2015
- 2015-01-26 CN CN201510039033.1A patent/CN104596586B/en not_active Expired - Fee Related
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| EP1508787A1 (en) * | 2003-08-21 | 2005-02-23 | Eldridge Products, Inc. | Flow averaging tube and method of using same |
| CN202158876U (en) * | 2011-07-22 | 2012-03-07 | 宁波建工股份有限公司 | Air leakage rate detecting device of ventilating air-conditioning system |
| CN202770606U (en) * | 2012-09-12 | 2013-03-06 | 广东省建筑科学研究院 | Ventilation air-conditioning system air leakage automatic testing device |
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