CN201607311U - Air pipe air leakage testing device - Google Patents

Air pipe air leakage testing device Download PDF

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Publication number
CN201607311U
CN201607311U CN2010200228157U CN201020022815U CN201607311U CN 201607311 U CN201607311 U CN 201607311U CN 2010200228157 U CN2010200228157 U CN 2010200228157U CN 201020022815 U CN201020022815 U CN 201020022815U CN 201607311 U CN201607311 U CN 201607311U
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CN
China
Prior art keywords
airduct
tested
air
shrouding
air pipe
Prior art date
Application number
CN2010200228157U
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Chinese (zh)
Inventor
李晓燕
周冬兴
马恒晞
Original Assignee
江苏省建筑工程集团有限公司
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Application filed by 江苏省建筑工程集团有限公司 filed Critical 江苏省建筑工程集团有限公司
Priority to CN2010200228157U priority Critical patent/CN201607311U/en
Application granted granted Critical
Publication of CN201607311U publication Critical patent/CN201607311U/en

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Abstract

An air pipe air leakage testing device is characterized in that the device mainly comprises a blower (1), a static pressure tank (2), a flow rate sensor (3) and a pressure sensor (4), wherein the blower (1) is connected with the input end of the static pressure tank (2) through an air pipe, the output end of the static pressure tank (2) is connected with a soft tube (B), the soft tube (B) is connected with a hard tube (A), the hard tube (A) is mounted on a closing plate (5), the closing plate (5) is mounted at the air inlet end of a tested-air pipe (6), the hard tube (A) is communicated with the tested-air pipe (6) through a through hole formed on the closing plate (5), the flow rate sensor (3) is mounted on the outlet side of the static pressure tank (2), the pressure sensor (4) is mounted in the tested-air pipe (6), and the flow rate sensor (3), the pressure sensor (4) and the blower (1) are all electrically connected with a control device (7). The utility model has the advantages of simple structure, visual measurement result, and convenient and fast calculation.

Description

The airduct air leakage amount testing device

Technical field

The utility model relates to a kind of building machinery, especially a kind of ventilation airduct inleakage calibrating installation, specifically a kind of airduct air leakage amount testing device.

Background technology

As everyone knows, along with the ventilation airduct can't blue interconnection technique in the widespread use of China, the shortcoming that its inleakage is big is outstanding all the more, the country in code for acceptance of construction quality of conditioning works energy-conservation as the master control object, the size of inleakage directly has influence on energy-saving effect, for this reason, the inleakage of ventilation airduct must be controlled in the scope of standard code, therefore before installing, the ventilation airduct must detect its inleakage, and present airduct air leakage amount testing device is mainly by blower fan, flow controller, the pressure measurement instrument, equipment such as honeycomb screen are formed, and the air leakage rate testing result need calculate through complicated formula.Weak point mainly is: the airduct surface area must be greater than 100 square metres; Inleakage is determined the computing formula complexity, and correction factor is more; Test result is not directly perceived; The inleakage that calculates has certain error, and error rate, precision be can not determine.

Summary of the invention

The purpose of this utility model is need pass through repeated calculation at existing air leakage amount testing device, and measurement result is directly perceived, the problem of low precision, design a kind of simply, airduct air leakage amount testing device intuitively.

The technical solution of the utility model is:

A kind of airduct air leakage amount testing device, it is characterized in that it is mainly by fan blower 1, plenum chamber 2, flow sensor 3 and pressure transducer 4 are formed, fan blower 1 links to each other by the input end of airduct with plenum chamber 2, the output terminal of plenum chamber 2 links to each other with flexible pipe B, flexible pipe B links to each other with hard tube A, hard tube A is installed on the shrouding 5, shrouding 5 is installed on the air intake of tested airduct 6, hard tube A communicates with tested airduct 6 by the through hole of being opened on the shrouding 5, described flow sensor 3 is installed in plenum chamber 2 outlet sides, pressure transducer 4 is installed in the tested airduct 6, flow sensor 3, pressure transducer 4 and fan blower 1 all are electrically connected with control device 7.

The installation site of described pressure transducer 3 is about 2 meters apart from the distance of shrouding 5.

The air outlet of described fan blower 1 is equipped with filtrator 8.

The beneficial effects of the utility model:

The utility model is simple in structure; Detection method is more directly perceived; The formula that calculates inleakage is easy; The precision height, relatively stable; Schooling to the testing staff is less demanding, just can grasp testing process through simple training; Simultaneously whole device mobility is good, in time detects after can installing the airduct made and parts, pinpoints the problems early, can in time be corrected.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Embodiment

Below in conjunction with drawings and Examples the utility model is further described.

As shown in Figure 1.

A kind of airduct air leakage amount testing device, it is mainly by fan blower 1, plenum chamber 2, flow sensor 3 and pressure transducer 4 are formed, fan blower 1 links to each other by the input end of airduct with plenum chamber 2, can add fixed filter 8 at the endpiece of fan blower 1 in case of necessity, to prevent that on-the-spot dust from influencing the measuring accuracy and the life-span of velocimeter, the output terminal of plenum chamber 2 links to each other with flexible pipe B (can adopt the aluminium foil heat-preserving hose of liner steel wire), flexible pipe B and hard tube A (can adopt length is galvanized iron conduit or coating steel pipe about 20 centimetres) link to each other, hard tube A is installed on the shrouding 5, shrouding 5 is installed on the air intake of tested airduct 6, the other end of tested airduct 6 also should block, shrouding 5 with can adopt slip plugging structure at present commonly used being connected of tested airduct, advance with threaded screw rod, universal flexible connection is adopted in screw mandrel and shutoff, hard tube A communicates with tested airduct 6 by the through hole of being opened on the shrouding 5, described flow sensor 3 is installed in plenum chamber 2 outlet sides, can be installed in the junction of flexible pipe B and plenum chamber 2, also can be installed among the flexible pipe B, pressure transducer 4 is installed in the tested airduct 6, can make a call to a diameter earlier at distance shrouding 5 about 2 meters and be 10 millimeters hole stretches into pressure transducer 4 in the tested airduct from the hole of being beaten, flow sensor 3, pressure transducer 4 and fan blower 1 all are electrically connected with control device 7 (whole electrical control is comparatively simple, and those skilled in the art all can adopt prior art to be realized).

Using method of the present utility model is as follows:

One, test is prepared

1, all system airducts that need carry out air leakage rate testing are responsible for and arm installs, and airduct is modulated on request smooth, and fixed support is provided with by code requirement.Detect test by light leak simultaneously, testing result is qualified.

2, adopt the test environment under the positive pressure to carry out system test.In the air leakage rate testing process, the fan pressure of device should be selected the specified testing pressure greater than determined system or equipment, and air quantity should allow 1.2 times of inleakage greater than maximum.

3, air velocity transducer, pressure transducer all should adopt the surveying instrument through being up to the standards.

4, the opening with all airducts in the tested system tightly seals.

5, select airduct one end that to test as air intake, do a blind plate, on blind plate, open a hole, meet the circular short tube A that galvanized steel plain sheet that a segment length is about 200mm is made then.Short tube A is connected the aluminium foil heat-preserving hose B with the liner steel wire with leak out testing tool and blower fan outlet section, make a call to φ 10 holes apart from the about 2m of A place on tested pipeline section, and pressure transducer is inserted 1/2 place in the tested airduct 6, sealing.

3, tested airduct is coupled together with pneumatic hose with blower fan and plenum chamber, note the sealing of interface.Then blower fan power line and the sensor line respective element with switch board is correctly connected.See Fig. 1.

Two. the air leakage rate testing process

1, opens testing apparatus, the force value of observing the pressure gauge indication.Regulate air quantity and blast by adjusting rotation speed of fan, make manometric force value reach the pressure (air-line system working pressure) of required test, when reaching the test pressure value, read velocimeter indicating graduation value, and perform record.

If the data of surveying exceed the airduct tightness when requiring, open testing apparatus, check the airduct place (can put cigarette) of leaking out one by one at seam crossing, locate to mark leaking out.Close blower fan and the instrument that leaks out after, handle leaking out and to take to mend again measures such as glue or brush ring epoxy resins.Treat mending-leakage manage everywhere finish after, restart testing apparatus this pipeline tested again, this process according to the test effect may repeat by needs, till the airduct inleakage reaches qualified requirement.

2, tested airduct allows maximum inleakage:

Q S=Q*S 0[m3/h] (S 0-tested airduct surface area)

3, allow the maximum wind speed that leaks out

V S=Q S/ S Survey[m/s] (S Survey-testing tube sectional area)

Because of pressure transducer inserts 1/2 place in the tested airduct, so the mean wind speed V=ξ * V of airduct Survey(ξ is an experience factor value 0.8~0.9).

4, test result:

As the mean wind speed V≤permission maximum of the test section airduct wind speed V that leaks out SThe time, air leakage rate testing is qualified.When the pressure gauge that is provided does not reach desired test pressure value, can reduce test pressure according to the requirement of standard, convert by formula, draw the inleakage under the regulation test pressure.Reduction formulaization is as follows:

Q=Q 0* (P/P 0) 0.65(P 0Be test pressure; Q 0Be the unit area inleakage (m under the test pressure 3/ m 2* h); P is the airduct working pressure; Q is the inleakage (m under the working pressure 3/ m 2* h).

The utility model does not relate to the part prior art that maybe can adopt all same as the prior art to be realized.

Claims (3)

1. airduct air leakage amount testing device, it is characterized in that it is mainly by fan blower (1), plenum chamber (2), flow sensor (3) and pressure transducer (4) are formed, fan blower (1) links to each other by the input end of airduct with plenum chamber (2), the output terminal of plenum chamber (2) links to each other with flexible pipe (B), flexible pipe (B) links to each other with hard tube (A), hard tube (A) is installed on the shrouding (5), shrouding (5) is installed on the air intake of tested airduct (6), hard tube (A) communicates with tested airduct (6) by the through hole of being opened on the shrouding (5), described flow sensor (3) is installed in plenum chamber (2) outlet side, pressure transducer (4) is installed in the tested airduct (6), flow sensor (3), pressure transducer (4) and fan blower (1) all are electrically connected with control device (7).
2. airduct air leakage amount testing device according to claim 1, the installation site that it is characterized in that described pressure transducer (3) is about 2 meters apart from the distance of shrouding (5).
3. airduct air leakage amount testing device according to claim 1 is characterized in that the air outlet of described fan blower (1) is equipped with filtrator (8).
CN2010200228157U 2010-01-06 2010-01-06 Air pipe air leakage testing device CN201607311U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010200228157U CN201607311U (en) 2010-01-06 2010-01-06 Air pipe air leakage testing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010200228157U CN201607311U (en) 2010-01-06 2010-01-06 Air pipe air leakage testing device

Publications (1)

Publication Number Publication Date
CN201607311U true CN201607311U (en) 2010-10-13

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Application Number Title Priority Date Filing Date
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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102519690A (en) * 2011-12-01 2012-06-27 安徽江淮松芝空调有限公司 Detection mechanism for detecting flowing condition in core body of heat exchanger
CN103134563A (en) * 2011-11-29 2013-06-05 北汽福田汽车股份有限公司 Air distribution detecting device, air outlet tool and air distribution detecting method thereof
CN103389190A (en) * 2013-07-29 2013-11-13 中国五冶集团有限公司 Wind-pressure smoke detection and leakproofness testing method of air pipe and wind-pressure smoke detection testing system of air pipe
CN103411742A (en) * 2013-07-29 2013-11-27 中国五冶集团有限公司 Method and system for testing tightness of air pressure of air pipe
CN104458155A (en) * 2014-12-04 2015-03-25 天津津贝尔建筑工程试验检测技术有限公司 Relative component leakproofness detecting equipment in building field
CN104792506A (en) * 2015-04-11 2015-07-22 成都陵川特种工业有限责任公司 Exhaust manifold quality detector
CN104949717A (en) * 2015-06-29 2015-09-30 南京博沃科技发展有限公司 Primary air flow measuring system for entrance of coal mill
CN105547613A (en) * 2016-01-05 2016-05-04 中国海洋石油总公司 Airduct leakage detection method of drilling platform
CN105675214A (en) * 2016-03-22 2016-06-15 北京中建建筑科学研究院有限公司 Positioning method and system of building inner air pipe leakage point
CN106368728A (en) * 2016-11-30 2017-02-01 四川有色金砂选矿药剂有限公司 Air supply device for mines
CN108061623A (en) * 2017-12-06 2018-05-22 中船黄埔文冲船舶有限公司 A kind of air pipeline leak testing process
CN109632209A (en) * 2018-12-12 2019-04-16 雄安万科绿色研发有限公司 Exhaust duct air-tightness detection method and detection device
US10684188B2 (en) 2015-11-18 2020-06-16 Carrier Corporation System and method for determining duct leakage in a HVAC system

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103134563A (en) * 2011-11-29 2013-06-05 北汽福田汽车股份有限公司 Air distribution detecting device, air outlet tool and air distribution detecting method thereof
CN102519690A (en) * 2011-12-01 2012-06-27 安徽江淮松芝空调有限公司 Detection mechanism for detecting flowing condition in core body of heat exchanger
CN103389190A (en) * 2013-07-29 2013-11-13 中国五冶集团有限公司 Wind-pressure smoke detection and leakproofness testing method of air pipe and wind-pressure smoke detection testing system of air pipe
CN103411742A (en) * 2013-07-29 2013-11-27 中国五冶集团有限公司 Method and system for testing tightness of air pressure of air pipe
CN103411742B (en) * 2013-07-29 2016-04-13 中国五冶集团有限公司 Airduct blast tightness method of testing
CN104458155A (en) * 2014-12-04 2015-03-25 天津津贝尔建筑工程试验检测技术有限公司 Relative component leakproofness detecting equipment in building field
CN104792506A (en) * 2015-04-11 2015-07-22 成都陵川特种工业有限责任公司 Exhaust manifold quality detector
CN104949717A (en) * 2015-06-29 2015-09-30 南京博沃科技发展有限公司 Primary air flow measuring system for entrance of coal mill
US10684188B2 (en) 2015-11-18 2020-06-16 Carrier Corporation System and method for determining duct leakage in a HVAC system
CN105547613A (en) * 2016-01-05 2016-05-04 中国海洋石油总公司 Airduct leakage detection method of drilling platform
CN105675214A (en) * 2016-03-22 2016-06-15 北京中建建筑科学研究院有限公司 Positioning method and system of building inner air pipe leakage point
CN106368728A (en) * 2016-11-30 2017-02-01 四川有色金砂选矿药剂有限公司 Air supply device for mines
CN108061623A (en) * 2017-12-06 2018-05-22 中船黄埔文冲船舶有限公司 A kind of air pipeline leak testing process
CN109632209A (en) * 2018-12-12 2019-04-16 雄安万科绿色研发有限公司 Exhaust duct air-tightness detection method and detection device

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Granted publication date: 20101013

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