CN2553347Y - Damping constant-current device for measuring pulsating airflow - Google Patents
Damping constant-current device for measuring pulsating airflow Download PDFInfo
- Publication number
- CN2553347Y CN2553347Y CN 02274491 CN02274491U CN2553347Y CN 2553347 Y CN2553347 Y CN 2553347Y CN 02274491 CN02274491 CN 02274491 CN 02274491 U CN02274491 U CN 02274491U CN 2553347 Y CN2553347 Y CN 2553347Y
- Authority
- CN
- China
- Prior art keywords
- pressurizer tank
- damping constant
- volume
- measure
- current stabilizer
- 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 - Fee Related
Links
Images
Abstract
The utility model relates to a flow stabilizer, in particular to a damped flow stabilizer used for measuring the flow rate of airflow, to solve the problem of the measurement precision of the flow rate of pulsation airflow. The utility model has the key technical points that the device comprises a hollow cylinder shaped pressure-stabilizing case with the volume far larger than the volume of the measured pulsation air source, an air inlet pipe (6) and an air outlet pipe (7) are arranged at the two ends of the pressure-stabilizing case, a partition board (4) is also fixedly arranged in the middle inside the pressure-stabilizing case to partition the case into two cavity bodies, and the two cavity bodies are mutually communicated through a damping tube (5) penetrating the partition board (4).
Description
Technical field
The utility model relates to a kind of constant-current stabilizer, particularly designs a kind of pulse pneumatic flow measurement damping constant-current stabilizer.
Background technology
In a lot of fields, people wish to obtain satisfied result to the measurement of pulsating flow.Especially in engine test, making ins all sorts of ways gets the flow of pulsed gas in engine charge or the gas outlet with instrument, but all is difficult to obtain gratifying result.
The name of the game is that many flowmeters are directly stable gas to be measured, and it is steady flow even, single-phase, Newtonian fluid that its measuring accuracy is based on tested gas.When measuring engine inlet and outlet flow, between engine and flowmeter, place a volume case usually at present,, form steady flow to suppress pulsation.This big volume empty van formula stable-pressure device is not only bulky, and still undesirable to the voltage regulation result of single cylinder engine.Someone once made from 150 to 500 times of pressurizer tank volumes significantly and changed in the scope of displacement, with the comparative experiments precision.Discovery is better to high speed multicylinder engine voltage regulation result, though and to the low speed single-barrel engine amplitude that can reduce significantly to flow, measuring error is still very big, even adopt 1000 times to displacement, also is difficult to measuring error is controlled at below 3%.
Summary of the invention
The damping constant-current stabilizer that provides a kind of improved measurement pulse pneumatic flow of the utility model purpose can solve the above-mentioned shortcoming that the existing measuring technique in this field exists effectively.
The utility model is used to measure the damping constant-current stabilizer of pulse pneumatic flow, comprise the empty tubular pressurizer tank of a volume much larger than tested pulsation source of the gas volume, two ends at pressurizer tank are provided with air inlet and exhaust piper, be characterized in: the middle part in pressurizer tank also sets firmly a dividing plate and is divided into two cavitys, and this two cavity is connected by the damper tube that is set on the dividing plate.
The pressurizer tank diameter is 22.5: 1 with the best ratio of damper tube diameter.
The using method of this device and the pressurizer tank of above-mentioned prior art are identical, do not give unnecessary details at this.
The utility model has disclosed voltage regulation result significantly owing to designed above-mentioned damper tube structure.Promptly be used in single-barrel engine and measure, its precision also can be controlled in 3%, thereby has improved the measuring accuracy to the pulse pneumatic flow; Owing to the prompting significantly of voltage regulation result, can reduce the volume of pressurizer tank effectively.
Description of drawings
Fig. 1 is the utility model structural representation.
Embodiment
Embodiment below in conjunction with accompanying drawing provides describes in further detail the utility model structure.
With reference to Fig. 1, be used to measure the damping constant-current stabilizer of pulse pneumatic flow, had the tubular pressurizer tank, its two ends are provided with air inlet and exhaust piper (6), (7), this pressurizer tank inserts half (1), (3) that are connected by middle female tube (2) and two ends and is formed, half (1), (3) can be prolonged female tube (2) and slided and stretch, contract, to adjust the volume of whole pressurizer tank; Set firmly a compartment (4) at the middle part of pressurizer tank and be divided into two cavitys, this two cavity is connected by the damper tube (5) that is set on the dividing plate (4).
Damper tube (5) is in the below of pressurizer tank air inlet and exhaust piper (6), (7) axis.
Draw by a large amount of experiments:
1. pressurizer tank diameter and damper tube (5) diameter ratio is 22.5: 1 o'clock, voltage regulation result the best;
2. the pressurizer tank volume is that the techno-economic effect more than 290 times of tested pulsation source of the gas volume is good.
As manufacture the damping constant-current stabilizer that the test job volume is a pulsed gas flow in the 0.815L single-barrel engine gas outlet, can make by following parameters of structural dimension:
Pressurizer tank length is 1600mm
The pressurizer tank diameter is 450mm
Damper tube (5) length is 600mm
Damper tube (5) diameter is 20mm
Air inlet and exhaust piper (6), (7) diameter are 60mm
Claims (4)
1. damping constant-current stabilizer that is used to measure the pulse pneumatic flow, comprise the empty tubular pressurizer tank of a volume much larger than tested pulsation source of the gas volume, be provided with air inlet-outlet pipe (6), (7) at the two ends of pressurizer tank, it is characterized in that middle part in pressurizer tank also sets firmly a dividing plate (4) and is divided into two cavitys, this two cavity is connected by the damper tube (5) that is set on the dividing plate (4).
2. a kind of damping constant-current stabilizer that is used to measure the pulse pneumatic flow according to claim 1 is characterized in that the best ratio of pressurizer tank diameter and damper tube (5) diameter is 22.5: 1.
3. a kind of damping constant-current stabilizer that is used to measure the pulse pneumatic flow according to claim 1 is characterized in that described damper tube (5) is in the below of pressurizer tank air inlet and exhaust piper (6), (7) axis.
4. a kind of damping constant-current stabilizer that is used to measure the pulse pneumatic flow according to claim 1, it is characterized in that described pressurizer tank inserts half (1), (3) that are connected by middle mother's tube (2) and two ends and formed, the volume that whole pressurizer tank is adjusted in female tube (2) slip can be prolonged in half (1), (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02274491 CN2553347Y (en) | 2002-07-30 | 2002-07-30 | Damping constant-current device for measuring pulsating airflow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02274491 CN2553347Y (en) | 2002-07-30 | 2002-07-30 | Damping constant-current device for measuring pulsating airflow |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2553347Y true CN2553347Y (en) | 2003-05-28 |
Family
ID=33738748
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02274491 Expired - Fee Related CN2553347Y (en) | 2002-07-30 | 2002-07-30 | Damping constant-current device for measuring pulsating airflow |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2553347Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106704832A (en) * | 2016-12-21 | 2017-05-24 | 中国北方发动机研究所(天津) | Pressure and flow stabilizing device of pipeline gas |
| CN107367390A (en) * | 2017-08-14 | 2017-11-21 | 广西玉柴机器股份有限公司 | Engine pedestal air inlet voltage-stabilizing system |
-
2002
- 2002-07-30 CN CN 02274491 patent/CN2553347Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106704832A (en) * | 2016-12-21 | 2017-05-24 | 中国北方发动机研究所(天津) | Pressure and flow stabilizing device of pipeline gas |
| CN106704832B (en) * | 2016-12-21 | 2019-02-01 | 中国北方发动机研究所(天津) | A kind of pipeline gas voltage stabilization and current stabilization device |
| CN107367390A (en) * | 2017-08-14 | 2017-11-21 | 广西玉柴机器股份有限公司 | Engine pedestal air inlet voltage-stabilizing system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101354273B (en) | Method and device for measuring compound type gas flow | |
| CN106482794B (en) | Venturi flowmeter of EGR engine | |
| CN101514940B (en) | Flow characteristics tester for intake and exhaust system of small gasoline engine and exhaust control method | |
| CN2553347Y (en) | Damping constant-current device for measuring pulsating airflow | |
| CN2367251Y (en) | Digital-display type electronic pneumanometer | |
| CN200982882Y (en) | Check device of motorcar air traffic meter | |
| Xinyu et al. | Turbulent flows in smooth-wall open channels with different slope | |
| CN1967159A (en) | Method for measuring flux and volume air rate of gas-liquid two-phase bubble flow | |
| CN101393043A (en) | High frequency response flowmeter and measurement method thereof | |
| CN204202674U (en) | Constant-current stabilizer and flowmeter | |
| CN205301358U (en) | Take fixing device's pin type pitot tube | |
| CN1309284A (en) | Design method and equipment of built-in dual-venturi fluid measurer | |
| Hao et al. | Influence of the hole chamfer on the characteristics of a multi-hole orifice flowmeter | |
| CN210165914U (en) | Porous pneumatic measuring instrument inner diameter measuring head and pneumatic measuring instrument | |
| CN200986450Y (en) | Differential pressure vortex quality and flux measurement signal processing equipment | |
| CN209729212U (en) | The on-way resistance experiment instrument of multistable | |
| CN209783694U (en) | Differential pressure type liquid level transmitter | |
| CN209727472U (en) | A kind of adjustable testing stand for automotive muffler performance test | |
| CN209040823U (en) | The measuring equipment of equal flows branch path metering oil gas water well yield | |
| CN206627170U (en) | Use for laboratory gas flowmeter | |
| CN209802440U (en) | Adjustable fixing device for installing externally-clamped sensor | |
| CN210401015U (en) | Multi-angle erosion corrosion experimental apparatus based on guide plate | |
| CN206990216U (en) | Engine pedestal air inlet voltage-stabilizing system | |
| CN107976236B (en) | Steady flow structure and steady flow method of sonic nozzle gas flow standard device | |
| CN213812508U (en) | Measuring device for accurately calibrating flow |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |