CN202158876U - Air leakage rate detecting device of ventilating air-conditioning system - Google Patents
Air leakage rate detecting device of ventilating air-conditioning system Download PDFInfo
- Publication number
- CN202158876U CN202158876U CN2011202616537U CN201120261653U CN202158876U CN 202158876 U CN202158876 U CN 202158876U CN 2011202616537 U CN2011202616537 U CN 2011202616537U CN 201120261653 U CN201120261653 U CN 201120261653U CN 202158876 U CN202158876 U CN 202158876U
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- China
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- inleakage
- leakage rate
- air
- air leakage
- conditioning system
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Abstract
The utility model relates to an air leakage rate detecting device of a ventilating air-conditioning system of an air pipe detecting device, which aims at solving the technical problem that the existing air leakage rate detecting device is inconvenient in operation and comprises a fan, a frequency changer, a flexible pipe, a detecting pipe, an air leakage rate detecting element, a reversing valve and a micro differential pressure gauge. The frequency changer is connected with the fan, an air outlet of the fan is connected with one end of the detecting pipe, the middle of the detecting pipe is connected with the air leakage rate detecting element, the air leakage rate detecting element comprises a hole plate and measuring ports, the measuring ports are arranged at two ends of the hole plate, and the other end of the detecting pipe is connected with an air pipe to be detected through a pipe. The air leakage rate detecting device is characterized in that the measuring ports in the air leakage rate detecting element are connected with the reversing valve which is connected with the micro differential pressure gauge. The reversing valve is connected with the micro differential pressure gauge, so that fast conversion of measured objects can be achieved. The air leakage rate detecting device is convenient in operation, and applicable to detection of air leakage rate of the ventilating air-conditioning system or structural improvement of like products.
Description
Technical field
The utility model relates to the airduct pick-up unit, is a kind of ventilation and air conditioning system inleakage pick-up unit.
Background technology
Inleakage is in the air-line system, under working pressure, and through airduct body construction and interface thereof, the volume of air amount that gushes in the unit interval or infiltrate.Country in code for acceptance of construction quality of conditioning works energy-conservation as the master control object, require the detection of air-line system inleakage, and present airduct air leakage amount testing device mainly is made up of equipment such as blower fan, flow controller, pressure measurement instruments.The prior art checkout equipment is general to adopt two measurement mechanisms to measure tested pipe pressure and flow respectively; Granted publication CN201348557Y like Chinese patent document publication; On November 18 2009 Granted publication day, the utility model name is called " a kind of air-conditioning equipment inleakage on-site testing device ", and this patent promptly discloses a kind of employing gas flow sensor and two kinds of measurement mechanisms of gas pressure sensor; Though can measure inleakage, price comparison is high.Also there is design to adopt a measurement mechanism; Granted publication CN201607253U like Chinese patent document publication; On October 13 2010 Granted publication day, the utility model name is called " airduct pressure-bearing inleakage and tube wall are withstand voltage deflection proving installation ", and the design feature of this scheme is: blower fan connects the inner inleakage measuring section that orifice flowmeter is installed through first flexible pipe; The inleakage measuring section connects airduct through second flexible pipe, and airduct connects the inclined microbarograph.Its principle of work is: at first through regulating blower fan, make the static pressure in the airduct to be measured meet the requirements of experiment work pressure, again through the pressure difference before and after the tilting micromanometer measuring diaphragm flowmeter.According to this pressure difference (△ P).Utilize the pressure reduction (△ P) and inleakage (Q) relation curve of calibrating in advance, can find the value that leaks out (Q).Original technical pattern is complicated though above-mentioned patent has overcome, the cost problem of higher, and comparatively inconvenience of its operation needs earlier minute-pressure instrumentation high-pressure side to be placed on tested airduct end; And low pressure termination atmospheric pressure to measure the static pressure in the airduct, is received the orifice plate front with the survey high-pressure side of microbarograph again; Low pressure termination orifice plate back; Survey orifice flowmeter fore-and-aft survey pressure difference, this process need interface of microbarograph of manually transferring is so have much room for improvement.
Summary of the invention
For overcoming above-mentioned deficiency, the purpose of the utility model is to this area a kind of ventilation and air conditioning system inleakage pick-up unit to be provided, and makes it solve the existing unhandy technical matters of inleakage pick-up unit.Its objective is and realize through following technical scheme.
A kind of ventilation and air conditioning system inleakage pick-up unit; This device comprises blower fan, frequency converter, flexible pipe, detector tube, inleakage measuring sensor, reversal valve, pressure difference meter, and frequency converter connects blower fan, fan outlet joint detection Guan Yiduan; The inleakage measuring sensor is equipped with at the detector tube middle part; This inleakage measuring sensor comprises orifice plate, measures interface, measures interface and is arranged at the orifice plate two ends, and the detector tube other end connects tested airduct through flexible pipe.Its structural feature is that the measurement interface in the said inleakage measuring sensor connects reversal valve, and reversal valve connects pressure difference meter.Through reversal valve is set, removed the loaded down with trivial details of manual switch pressure difference meter interface from, only need to regulate the measuring object that reversal valve can change pressure difference meter, comparatively convenient.And slewing rate is fast, has both improved testing efficient, has avoided tested air duct pressure to change and the accuracy of influence detection data again.
Said reversal valve is a two-position four-way valve, controls two measurement states, is respectively pressure difference meter and measures the static pressure in the airduct, the front and back pressure difference of pressure difference meter measuring diaphragm flowmeter.
According to the principle of work of above-mentioned reversal valve, said reversal valve also can be set to hand-operated direction valve, and is simple in structure, and cost is low.
The utility model connects pressure difference meter through reversal valve, realizes the quick conversion of measuring object, and it is comparatively convenient to operate, and is fit to be applied to the detection of ventilation and air conditioning system inleakage, or the architecture advances of like product.
Description of drawings
Fig. 1 is the structural representation that the utility model pressure difference meter is measured the airduct static pressure.
Fig. 2 is the structural representation of pressure difference before and after the utility model pressure difference meter measuring diaphragm flowmeter.
Embodiment
Combine accompanying drawing at present, the utility model is further described.The name of sequence number is called among the figure: blower fan 1, frequency converter 2, detector tube 3, inleakage measuring sensor 4, reversal valve 5, pressure difference meter 6, airduct 7.
Like Fig. 1, shown in Figure 2; This ventilation and air conditioning system inleakage measurement mechanism comprises blower fan 1, frequency converter 2, detector tube 3, inleakage measuring sensor 4, reversal valve 5, pressure difference meter 6, airduct 7; The power supply of blower fan connects frequency converter, fan outlet joint detection Guan Yiduan, and the inleakage measuring sensor is equipped with at the detector tube middle part; The inleakage measuring sensor is by orifice plate and place the measurement interface at orifice plate two ends to constitute; Measure interface for two and connect reversal valve, reversal valve is manual two-position four way change valve, and reversal valve connects pressure difference meter.Concrete principle of work is: the detector tube tested airduct that is tightly connected, at first reversal valve is adjusted to loop shown in Figure 1, and start blower fan, observe the reading of pressure difference meter, regulate frequency converter, in airduct, reach required static pressure.Be adjusted to shown in Figure 2 loop with reversal valve this moment, the pressure difference of measuring diaphragm flowmeter rear and front end, and pressure difference reads from pressure difference meter, and through tabling look-up or calculating the inleakage of tested airduct, test process is comparatively simple, convenient at last.
Claims (3)
1. ventilation and air conditioning system inleakage pick-up unit; This device comprises blower fan (1), frequency converter (2), flexible pipe, detector tube (3), inleakage measuring sensor (4), reversal valve (5), pressure difference meter (6); Frequency converter connects blower fan; Fan outlet joint detection Guan Yiduan, the inleakage measuring sensor is equipped with at the detector tube middle part, and this inleakage measuring sensor comprises orifice plate, measures interface; Measure interface and be arranged at the orifice plate two ends, the detector tube other end connects tested airduct (7) through flexible pipe; It is characterized in that the measurement interface in the said inleakage measuring sensor (4) connects reversal valve (5), reversal valve connects pressure difference meter (6).
2. according to the said ventilation and air conditioning system inleakage of claim 1 pick-up unit, it is characterized in that said reversal valve (5) is a two-position four-way valve.
3. according to the said ventilation and air conditioning system inleakage of claim 1 pick-up unit, it is characterized in that said reversal valve (5) is a hand-operated direction valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202616537U CN202158876U (en) | 2011-07-22 | 2011-07-22 | Air leakage rate detecting device of ventilating air-conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202616537U CN202158876U (en) | 2011-07-22 | 2011-07-22 | Air leakage rate detecting device of ventilating air-conditioning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202158876U true CN202158876U (en) | 2012-03-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202616537U Expired - Fee Related CN202158876U (en) | 2011-07-22 | 2011-07-22 | Air leakage rate detecting device of ventilating air-conditioning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202158876U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104596586A (en) * | 2015-01-26 | 2015-05-06 | 陕西建工安装集团有限公司 | Ventilation and air conditioning system performance detection method through prefabricated measuring nodes |
| CN104772497A (en) * | 2015-04-23 | 2015-07-15 | 陕西建工安装集团有限公司 | Hole-opening method for measuring holes for testing performances of ventilation and air conditioning system |
| CN109443455A (en) * | 2018-11-06 | 2019-03-08 | 中国农业大学 | Blower ventilation amount test device and its test method |
| US10684188B2 (en) | 2015-11-18 | 2020-06-16 | Carrier Corporation | System and method for determining duct leakage in a HVAC system |
-
2011
- 2011-07-22 CN CN2011202616537U patent/CN202158876U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104596586A (en) * | 2015-01-26 | 2015-05-06 | 陕西建工安装集团有限公司 | Ventilation and air conditioning system performance detection method through prefabricated measuring nodes |
| CN104772497A (en) * | 2015-04-23 | 2015-07-15 | 陕西建工安装集团有限公司 | Hole-opening method for measuring holes for testing performances of ventilation and air conditioning system |
| US10684188B2 (en) | 2015-11-18 | 2020-06-16 | Carrier Corporation | System and method for determining duct leakage in a HVAC system |
| CN109443455A (en) * | 2018-11-06 | 2019-03-08 | 中国农业大学 | Blower ventilation amount test device and its test method |
| CN109443455B (en) * | 2018-11-06 | 2024-03-05 | 中国农业大学 | Fan ventilation quantity testing device and testing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170116 Address after: Jiangdong District 315040 Zhejiang city of Ningbo Province Ning Chuan Road No. 538 Patentee after: NINGBO JIANGONG ENGINEERING GROUP CO., LTD. Address before: 315040 Zhejiang Province, Ningbo City Jiangdong District Xingning Road No. 46 Patentee before: Ningbo Construction Co., Ltd. |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170216 Address after: Jiangdong District 315040 Zhejiang city of Ningbo Province Ning Chuan Road No. 538 Patentee after: NINGBO JIANGONG ENGINEERING GROUP CO., LTD. Address before: 315040 Zhejiang Province, Ningbo City Jiangdong District Xingning Road No. 46 Patentee before: Ningbo Construction Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120307 Termination date: 20180722 |