CN211178893U - Air pipe tightness testing device - Google Patents
Air pipe tightness testing device Download PDFInfo
- Publication number
- CN211178893U CN211178893U CN201922464822.6U CN201922464822U CN211178893U CN 211178893 U CN211178893 U CN 211178893U CN 201922464822 U CN201922464822 U CN 201922464822U CN 211178893 U CN211178893 U CN 211178893U
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- air pipe
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- pipe
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- 238000012360 testing method Methods 0.000 title claims abstract description 18
- 238000006243 chemical reaction Methods 0.000 claims abstract description 3
- 239000000523 sample Substances 0.000 claims description 11
- 238000001514 detection method Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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Abstract
The utility model provides a tuber pipe tightness test equipment of general type, it includes quick-witted case, frequency conversion fan, venturi variable air volume valve, differential pressure table, gets gas portion. The variable frequency fan is arranged in the case, the tail part of the case is provided with a Venturi variable air volume valve, and the air pipe to be tested is connected with the Venturi variable air volume valve; a pressure difference meter is arranged at the rear part of the variable frequency fan in the case, and the outside of the pressure difference meter is connected with a gas taking part leading to the air pipe to be measured; the filter and the flow equalizing plate are sequentially arranged in the case between the variable frequency fan and the differential pressure gauge; the case is provided with a control panel. The device is adopted to supply air in the closed air pipe, and air quantity is measured through the Venturi variable air volume valve, so that the tightness of the air pipe is tested, and the device has the advantages of convenience in transportation and disassembly and assembly.
Description
Technical Field
The utility model relates to ventilation system tightness test technical field involves an tuber pipe tightness test equipment particularly.
Background
With the deepening of national energy-saving and emission-reducing guidelines, the construction requirements of enterprises on the purification pipeline are gradually improved. According to the practical use experience, the tightness of the ventilating duct is improved, and the air leakage rate is controlled, so that the energy-saving effect is obvious.
The traditional tightness test of the low-pressure air pipe mostly adopts a light leakage method for detection, a light source is arranged on the inner side or the outer side of the air pipe, the opposite side is in a dark environment, then the light source is detected to slowly move along the detected part and a seam, and meanwhile, the other side is observed. But this method cannot be used for accurately testing a relatively small gap. At present, according to GB50243-2016, the tightness inspection of a low-pressure air pipe does not allow a light leakage method to be adopted for detection any more, and the light leakage method cannot be used as a basis for judging the qualified tightness performance of the air pipe, so that novel air pipe tightness detection equipment needs to be developed.
Disclosure of Invention
The utility model provides an tuber pipe tightness test equipment of general type, it adopts equipment to supply air in inclosed tuber pipe to thereby carry out the air quantity through venturi change blast valve and measure and reach the test to the tuber pipe tightness, have the advantage of being convenient for transportation and dismouting.
The utility model discloses realize above-mentioned purpose and adopt following technical scheme:
the utility model provides an air pipe tightness test equipment, it includes quick-witted case, frequency conversion fan, venturi variable air volume valve, differential pressure meter, gets gas portion.
The variable frequency fan is arranged in the case, the tail part of the case is provided with a Venturi variable air volume valve, and the air pipe to be tested is connected with the Venturi variable air volume valve; a pressure difference meter is arranged at the rear part of the variable frequency fan in the case, and the outside of the pressure difference meter is connected with a gas taking part leading to the air pipe to be measured; the filter and the flow equalizing plate are sequentially arranged in the case between the variable frequency fan and the differential pressure gauge; the case is provided with a control panel.
The gas taking part comprises a gas taking probe and a gas pipe; the air taking probe is inserted into an air pipe to be measured, and the rear part of the air taking probe is connected to the differential pressure gauge through the air pipe.
The filter is an ultra-thin type filter.
The utility model adopts the above technical scheme following beneficial effect has:
the device has the advantages of simple overall structure, high accuracy, portability and the like, and provides a universal tool for the tightness detection of a low-pressure air pipe system; the tightness test of the air pipes with different specifications can be dealt with, and the air pipe tightness test device can be directly used on site, and is relatively simple and convenient to operate.
Drawings
Fig. 1 is a schematic view of the present invention.
Detailed Description
The invention and the embodiments are further explained below with reference to the drawings
The air duct tightness testing device shown in fig. 1 comprises a case 1, a variable frequency fan 2, a venturi variable air volume valve 3, a differential pressure gauge 4 and an air intake part 5.
The variable frequency fan 2 is arranged in the case 1, the tail part of the case 1 is provided with a Venturi variable air volume valve 3, and the air pipe 0 to be tested is connected with the Venturi variable air volume valve 3; a differential pressure gauge 4 is arranged at the rear part of the variable frequency fan 2 in the case 1, and the outside of the differential pressure gauge 4 is connected with a gas taking part 5 leading to the air pipe 0 to be measured; the machine case 1 is also internally provided with a filter 6 and a flow equalizing plate 7, and the filter 6 and the flow equalizing plate 7 are sequentially arranged in the machine case 1 between the variable frequency fan 2 and the differential pressure gauge 4; the case 1 is provided with a control panel 8.
The gas taking part 5 comprises a gas taking probe 9 and a gas pipe 10; the air taking probe 9 is inserted into the air pipe 0 to be measured, and the rear part of the air taking probe 9 is connected to the differential pressure gauge 4 through an air pipe 10.
The filter 6 is an ultra-thin type filter.
Examples
In the practical use process, the variable frequency fan selects the air quantity of 3000m3The outlet static pressure is 2000 Pa; the ultra-thin primary filter is a plate filter, and the filtration grade is G4 (90% Arr); the flow equalizing plate is a galvanized perforated plate, the thickness of the flow equalizing plate is 2mm, and the aperture of the flow equalizing plate is phi 10; the differential pressure gauge is high-precision type, the measuring range is 0-2000 Pa,the precision is 1 Pa; the control range of the Venturi variable air volume valve is from 10m3H to 3000m3H, adjusting precision (+/-5 per mill); the number of air pipes to be measured is not less than 3, and the total surface area is not less than 15m2。
The tail end of an air pipe to be tested is plugged by a blind plate, a testing end is connected with a Venturi variable air volume valve of detection equipment by a flange and a sealing gasket, then an air volume measuring hole is formed in the air pipe to be tested, an air taking probe is installed on the air volume measuring hole, and the air taking probe is connected with a pressure difference meter by an air pipe. The detection equipment is started, the control panel is set with test pressure (the same as the working pressure of the air pipe), the control system automatically starts the variable frequency fan to supply air, the frequency of the variable frequency fan is gradually adjusted according to the value measured by the pressure difference meter, when the pressure of the system of the detected air pipe reaches a preset value (such as 600 Pa), the frequency of the variable frequency fan is kept stable, the venturi variable air volume valve automatically finely adjusts air volume along with the air pressure, and at the moment, the air volume fed back by the venturi variable air volume valve on the control panel is the air leakage volume of the detected air pipe under the pressure.
The principle of the equipment lies in that when the pressure in the air pipe reaches the required working pressure, the air supply quantity of the Venturi variable air volume valve is adjusted and detected, the pressure in the air pipe is kept constant, and the air volume fed back by the Venturi variable air volume valve is the air leakage volume of the air pipe to be detected under the pressure.
Claims (3)
1. The utility model provides an tuber pipe tightness test equipment, it includes quick-witted case, frequency conversion fan, venturi variable air volume valve, differential pressure table, gets gas portion, its characterized in that: the variable frequency fan is arranged in the case, the tail part of the case is provided with a Venturi variable air volume valve, and the air pipe to be tested is connected with the Venturi variable air volume valve; a pressure difference meter is arranged at the rear part of the variable frequency fan in the case, and the outside of the pressure difference meter is connected with a gas taking part leading to the air pipe to be measured; the filter and the flow equalizing plate are sequentially arranged in the case between the variable frequency fan and the differential pressure gauge; the case is provided with a control panel.
2. An air duct tightness testing device according to claim 1, characterized in that: the gas taking part comprises a gas taking probe and a gas pipe; the air taking probe is inserted into an air pipe to be measured, and the rear part of the air taking probe is connected to the differential pressure gauge through the air pipe.
3. An air duct tightness testing device according to claim 2, characterized in that: the filter is an ultra-thin type filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922464822.6U CN211178893U (en) | 2019-12-31 | 2019-12-31 | Air pipe tightness testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922464822.6U CN211178893U (en) | 2019-12-31 | 2019-12-31 | Air pipe tightness testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211178893U true CN211178893U (en) | 2020-08-04 |
Family
ID=71808821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922464822.6U Expired - Fee Related CN211178893U (en) | 2019-12-31 | 2019-12-31 | Air pipe tightness testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211178893U (en) |
-
2019
- 2019-12-31 CN CN201922464822.6U patent/CN211178893U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200804 |
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| CF01 | Termination of patent right due to non-payment of annual fee |