CN2198602Y - Measuring instrument for wind pipe leakage - Google Patents
Measuring instrument for wind pipe leakage Download PDFInfo
- Publication number
- CN2198602Y CN2198602Y CN 94212704 CN94212704U CN2198602Y CN 2198602 Y CN2198602 Y CN 2198602Y CN 94212704 CN94212704 CN 94212704 CN 94212704 U CN94212704 U CN 94212704U CN 2198602 Y CN2198602 Y CN 2198602Y
- Authority
- CN
- China
- Prior art keywords
- air
- utility
- model
- blower fan
- airduct
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model relates to a testing instrument for wind pipe leakage. In the utility model, a speed regulation device of a motor of a blower is a variable frequency governor which is connected with a power supply and the motor of a blower; the outlet of the blower is communicated with a tested wind pipe by a hose. Air flow rate meters are two air flow rate manometers, one end of each of which is respectively communicated with the atmosphere, wherein one end of a U-shaped manometer is connected with the tested wind pipe by the hose, and the lower end of an inclined manometer is communicated with a blower inlet flow rate tube. The utility model has the advantages of high measuring precision, simple equipment, portability and convenient detection in construction sites, and the utility model can be used for the air leakage measurement of ventilation and air conditioning system wind pipes, air processors, new blowers, fire protection valves, smoke extractors, etc.
Description
The utility model belongs to a kind of testing tool that detects airduct construction tightness quality.
In ventilation, air conditioning wind pipe construction, the tightness (yet being inleakage) of airduct construction is not often measured, make the airduct engineering construction be difficult to reach high-quality; Require to do leak out the test the purification air-conditioning engineering in, existing method of testing is to utilize a bigger blower fan, doing a flow-through orifice or flow nozzle is placed on blower fan and connects between the tested airduct, in order to regulate the pressure of tested airduct, between blower fan outlet and flow-through orifice or flow nozzle, add one and diffuse valve.Such device must be on-the-spot the loose mail assembling, bulky, use inconvenience, and flow-through orifice or flow nozzle processing is difficult to reach standard-required, test error is also bad to be determined.
The purpose of this utility model provides a kind of measuring accuracy height, equipment is terse, volume is little, in light weight, be convenient to the airduct Leak Off Test (LOT) instrument that the working-yard is detected, to guarantee construction quality.
Airduct Leak Off Test (LOT) instrument of the present utility model comprises blower fan, fan electromotor arrangements for speed regulation and air-flow measurement meter, it is characterized in that: also comprise a shell;
The fan electromotor arrangements for speed regulation are variable-frequence governors, and it links to each other with fan electromotor with power supply;
The outlet of blower fan is communicated with tested airduct by flexible pipe, and the axle side of blower fan is connected with the inlet flow rate pipe;
The air-flow measurement meter is the air mass flow pressure gauge that two one ends communicate with atmosphere, and wherein the manometric end of U-shaped is linked to each other with tested airduct by flexible pipe, and the manometric lower end of tilting communicates with blower fan inlet flow rate pipe.
Above-mentioned blower fan is a centrifugal fan.
Principle of work of the present utility model is to inject the air quantity that test instrument produces quantitative in the finite volume of tested airduct and keep the air of certain pressure, this part air will be by airduct slit flow to extraneous airspace (promptly leaking out), when the air pressure in the airduct kept stablizing, this injection air mass flow was the leakage rate of tested airduct under this steady pressure.
The method of testing of this test instrument: with the whole air ports shutoff of tested airduct, pick out a flexible pipe that outlet is connected with the test instrument blower fan and be connected the flexible pipe of measuring tested air duct pressure device with one, adjust the fan electromotor arrangements for speed regulation, rotation speed of fan is improved gradually, when the airduct internal pressure reaches required pressure, and when stable, no longer improve rotation speed of fan, at this moment make in the negative pressure of blower fan induction pipe and reflect its numerical value on the tilting pressure gauge, just can draw and enter blower fan flow p.s. as long as search the flowtube pressure that provided and discharge relation table, also be the inleakage of air-line system when this test pressure.
Motor speed of the present utility model is 0～10200 rev/min; Test pressure: 0～2000Pa; The scope of leaking hunting: 3～89 * 10
-3m
3/ S; Overall volume: 420 * 325 * 620; Weight: 25kg.Have the measuring accuracy height, equipment is terse, volume is little, in light weight, be convenient to the advantage that construction quality was detected, guaranteed in the working-yard.Can be used for ventilating, the inleakage of air-conditioning system airduct, air processing machine, new blower fan, fire resisting damper, smoke evacuation instrument etc. measures.
Below in conjunction with drawings and Examples the utility model is described in detail:
Fig. 1 is a structural representation of the present utility model.
As shown in the figure, the utility model is packed loose mail in the shell 4, and the fan electromotor arrangements for speed regulation are variable-frequence governors 5, and it links to each other with fan electromotor 6 with power supply; Blower fan adopts centrifugal blower 7, and its outlet is communicated with tested airduct 1 by flexible pipe 10, and the axle side of blower fan 7 is connected with inlet flow rate pipe 8; The air-flow measurement meter is the air mass flow pressure gauge that two one ends communicate with atmosphere, and wherein an end of U-shaped pressure gauge 2 is linked to each other with tested airduct 1 by flexible pipe 9, and the lower end of tilting pressure gauge 3 communicates with the inlet flow rate pipe 8 of blower fan 7.
Claims (2)
1, a kind of airduct Leak Off Test (LOT) instrument comprises blower fan, fan electromotor arrangements for speed regulation and air-flow measurement meter, it is characterized in that: also comprise a shell;
The fan electromotor arrangements for speed regulation are variable-frequence governors, and it links to each other with fan electromotor with power supply;
The outlet of blower fan is communicated with tested airduct by flexible pipe, and the axle side of blower fan is connected with the inlet flow rate pipe;
The air-flow measurement meter is the air mass flow pressure gauge that two one ends communicate with atmosphere, and wherein the manometric end of U-shaped is linked to each other with tested airduct by flexible pipe, and the manometric lower end of tilting communicates with blower fan inlet flow rate pipe.
2, airduct Leak Off Test (LOT) instrument according to claim 1, it is characterized in that: described blower fan is a centrifugal fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94212704 CN2198602Y (en) | 1994-05-27 | 1994-05-27 | Measuring instrument for wind pipe leakage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94212704 CN2198602Y (en) | 1994-05-27 | 1994-05-27 | Measuring instrument for wind pipe leakage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2198602Y true CN2198602Y (en) | 1995-05-24 |
Family
ID=33829479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94212704 Expired - Lifetime CN2198602Y (en) | 1994-05-27 | 1994-05-27 | Measuring instrument for wind pipe leakage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2198602Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100346112C (en) * | 2002-11-19 | 2007-10-31 | 松下电器产业株式会社 | Tester for air conditioner |
| CN101532901B (en) * | 2009-04-13 | 2012-05-30 | 苏州工业设备安装集团有限公司 | Air leakage amount testing device of clean air conditioning 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 |
| CN109115419A (en) * | 2018-08-31 | 2019-01-01 | 上海华力微电子有限公司 | Boiler tube exhaust system and its leak hunting method |
| 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 |
| CN111059588A (en) * | 2018-10-17 | 2020-04-24 | 宁波方太厨具有限公司 | Central flue system and sealing state detection method thereof |
-
1994
- 1994-05-27 CN CN 94212704 patent/CN2198602Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100346112C (en) * | 2002-11-19 | 2007-10-31 | 松下电器产业株式会社 | Tester for air conditioner |
| CN101532901B (en) * | 2009-04-13 | 2012-05-30 | 苏州工业设备安装集团有限公司 | Air leakage amount testing device of clean air conditioning 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 |
| CN109115419A (en) * | 2018-08-31 | 2019-01-01 | 上海华力微电子有限公司 | Boiler tube exhaust system and its leak hunting method |
| CN111059588A (en) * | 2018-10-17 | 2020-04-24 | 宁波方太厨具有限公司 | Central flue system and sealing state detection method thereof |
| CN111059588B (en) * | 2018-10-17 | 2021-10-01 | 宁波方太厨具有限公司 | Central flue system and sealing state detection method thereof |
| 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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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: PATENTEE; FROM: BEIJING CITY MUNICIPAL CONSTRUCTION ENGINEERING MOUNTING CO. TO: BEIJING CITY CONSTRUCTION GROUP CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 100081 No. 62 South College Road, Beijing, Haidian District Patentee after: Beijing City Building Group Co., Ltd. Address before: 100045 Beijing city Xicheng District nanlishi Road No. seven headlines Patentee before: Beijing Municipal Construction Engineering & Installation Co. |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |