CN202101853U - Constant pressure difference and flow-stabilizing air channel testing device - Google Patents
Constant pressure difference and flow-stabilizing air channel testing device Download PDFInfo
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- CN202101853U CN202101853U CN2011200554108U CN201120055410U CN202101853U CN 202101853 U CN202101853 U CN 202101853U CN 2011200554108 U CN2011200554108 U CN 2011200554108U CN 201120055410 U CN201120055410 U CN 201120055410U CN 202101853 U CN202101853 U CN 202101853U
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- 238000012360 testing method Methods 0.000 title claims abstract description 40
- 238000009423 ventilation Methods 0.000 claims description 3
- 238000002485 combustion reaction Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 11
- 238000007664 blowing Methods 0.000 description 6
- 238000002474 experimental method Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The utility model belongs to the field of internal combustion engines, and particularly relates to a constant pressure difference and flow-stabilizing air channel testing device. The constant pressure difference and flow-stabilizing air channel testing device comprises a pressure-regulating box and a fan, wherein the pressure-regulating box is provided with measuring points, a first pipeline is arranged between an air inlet of the fan and the pressure-regulating box, a second pipeline is arranged between an air outlet of the fan and the outside atmosphere, a branch pipeline and a switch element are arranged between the first pipeline and the second pipeline and are matched with the first pipeline and the second pipeline to form an air inlet and outlet pipeline capable of conducting two-way air exchange, the testing device further comprises a flowmeter which is arranged on the first pipeline or the second pipeline. The constant pressure difference and flow-stabilizing air channel testing device is compact in structure, and easy and convenient to operate, can effectively improve testing efficiency and meet the repeatability requirement needed by testing.
Description
Technical field
The utility model belongs to field of internal combustion engine, is specifically related to a kind of level pressure difference steady flow air flue test device.
Background technology
With the stable-state flow experimental method detect, coefficient of flow, the swirl ratio in the inlet and outlet road of experiment internal combustion engine, to roll flow characteristics parameters such as stream compares be extensively to adopt both at home and abroad and efficient ways.Dynamic property, economy and emission behavior to guaranteeing internal combustion engine play crucial effects.What traditional method all adopted when carrying out the current stabilization experiment at present is level pressure difference experimental method, and when promptly current stabilization was tested under carrying out the different air valve lift, constantly the pressure before and after the adjustment air flue made this air flue front and back pressure differential be maintained certain value.Because existing level pressure difference experimental provision exists mechanism complicated; Defectives such as integrated degree is low; When carrying out the test in inlet and outlet road, often will adopt and overlap independently pipeline mechanism more, thereby make the total system complicated operation, working control is extremely inconvenient; Not only reduce the efficient of test, also taken limited inner space, laboratory simultaneously in a large number.
Summary of the invention
The purpose of the utility model provides a kind of compact conformation and level pressure difference steady flow air flue test device easy and simple to handle, can effectively improve testing efficiency, has satisfied simultaneously and has tested required repeated requirement.
For realizing above-mentioned purpose; The utility model provides following proposal: a kind of level pressure difference steady flow air flue test device, comprise pressurizer tank and blower fan, and said pressurizer tank is provided with measuring point; Be provided with first pipeline between fan air inlet and the pressurizer tank; Be provided with second pipeline between said blower fan gas outlet and outside atmosphere, be provided with branch line and on-off element between first pipeline and second pipeline, said branch line and on-off element cooperate with first pipeline and second pipeline constitute can two-way ventilation the intake and exhaust pipeline; Said experimental provision also comprises flowmeter, and said flowmeter is arranged on first pipeline or second pipeline.
After adopting said structure, the utility model can carry out engine air flue on a table apparatus air-breathing with the simple of blow mode and switch fast and test, and integrated degree is high, has improved testing efficiency greatly, has also satisfied simultaneously and has tested required repeated requirement.
Description of drawings
Fig. 1 is the pipeline and the components and parts arrangenent diagram of the utility model;
Fig. 2 is each measuring point distribution schematic diagram of pressurizer tank;
Fig. 3 is a Frequency Converter Control rotation speed of fan schematic diagram;
Fig. 4 is the air-breathing big flow rate test synoptic diagram of the utility model;
Fig. 5 is the air-breathing low discharge test synoptic diagram of the utility model;
Fig. 6 is the big flow rate test synoptic diagram of the air blowing of the utility model;
Fig. 7 is the big flow rate test synoptic diagram of the air blowing of the utility model.
Embodiment
A kind of level pressure difference steady flow air flue test device; Said experimental provision comprises pressurizer tank 10 and blower fan 20, and said pressurizer tank 10 is provided with measuring point 11, is provided with first pipeline 30 between described blower fan 20 air intake openings and the pressurizer tank 10; Be provided with second pipeline 40 between said blower fan 20 gas outlets and outside atmosphere; First pipeline 30 and 40 of second pipelines are provided with branch line and on-off element 60, said branch line and on-off element 60 cooperate with first pipeline 30 and second pipeline 40 constitute can two-way ventilation the intake and exhaust pipeline, said experimental provision also comprises flowmeter 50; Said flowmeter 50 is arranged on first pipeline 30 or second pipeline 40, like Fig. 1 and shown in Figure 3.
As the further preferred version of the utility model: as shown in Figure 1; Branch line is two; Said branch line is communicated with first pipeline 30 and second pipeline 40; Independently of one another and arranged crosswise between branch line, said on-off element 60 are arranged at branch line and are communicated with between formed each node with first pipeline 30 and second pipeline 40.
For more specifically realizing such scheme; As shown in Figure 1; Said branch line comprises first branch line 70 and second branch line 80; Said second branch line 80 and first pipeline 30 be communicated with the place in being communicated with between place and the pressurizer tank 10 of first branch line 70 and first pipeline 30, described second branch line 80 and second pipeline 40 be communicated with place's being communicated with between place and blower fan 20 gas outlets, simultaneously at first branch line 70 and second pipeline 40; The installation testing position of considering flowmeter 50 is near pressurizer tank 10; Its measured data are just accurate, and described flowmeter 50 is arranged on being communicated with between place and the pressurizer tank 10 of second branch line 80 and first pipeline 30
For the measurement data accuracy that makes the utility model higher; This device has also been realized measuring two kinds of metering systems for the air-flow high flow capacity of engine air flue and low discharge simultaneously; The practical implementation measure is that first pipeline 30 is punished into twice arm 30a in second branch line 80 and the connection of first pipeline 30,30b is communicated with pressurizer tank 10; Described flowmeter 50 be two and be separately positioned on twice arm 30a, 30b is last; Described flowmeter 50 comprises wide range flowmeter 51 and a small amount of range of flow meter 52, described twice arm 30a, the last on-off element 60 that is provided with of 30b.
Further, for ease of experimenter's control and operation, described on-off element 60 uses solenoid valve, and on-off element 60 is connected outside frequency converter 90 with 20 of blower fans.Simultaneously, as shown in Figure 3, described measuring point 11 is for being provided with three, respectively in order to coefficient of flow, the swirl ratio of test engine air flue, roll the stream ratio.
In the practical operation; As shown in Figure 2; The rotating speed that native system is controlled blower fan 20 through the frequency of data handling system 100 control of conversion devices 90 and the unlatching of each way switch element 60, close; Thereby control the flow and the flow direction of gas in each pipeline, and then realize the reliable switching between the air-breathing big flow rate mode of the utility model, air-breathing low discharge pattern, the big flow rate mode of blowing, four kinds of patterns of air blowing low discharge pattern.Set forth the conversion that how reaches each test pattern of the utility model with regard to above-mentioned four kinds of different modes below through the open and close of adjusting each way switch element 60.
As shown in Figure 1; Synoptic diagram for air-breathing big flow rate test; Be specially through data handling system 100 closing of CS element 62,63,65 and realize that air flow direction is seen figure, can be used for test engine inlet duct flow coefficient of discharge, air intake duct strength of vortex, air intake duct to roll intensity of flow; As shown in Figure 2; Synoptic diagram for air-breathing low discharge test; Realize that through data handling system 100 closing of CS element 62,63,66 air flow direction is seen figure, can be used for test engine inlet duct flow coefficient of discharge, air intake duct strength of vortex, air intake duct to roll intensity of flow; The synoptic diagram that is the big flow rate test of blowing as shown in Figure 3 realizes that through data handling system 100 closing of CS element 61,64,65 air flow direction is seen figure, can be used for test engine exhaust duct coefficient of flow; As shown in Figure 4 realize through data handling system 100 closing of CS element 61,64,66 that for the big flow rate test synoptic diagram of blowing concrete air flow direction is seen figure, can be used for test engine exhaust duct coefficient of flow.
Claims (7)
1. level pressure difference steady flow air flue test device; Said test unit comprises pressurizer tank (10) and blower fan (20); Said pressurizer tank (10) is provided with measuring point (11); Be provided with first pipeline (30) between described blower fan (20) air intake opening and the pressurizer tank (10); Be provided with second pipeline (40) between said blower fan (20) gas outlet and outside atmosphere, it is characterized in that: be provided with branch line and on-off element (60) between described first pipeline (30) and second pipeline (40), said branch line and on-off element (60) cooperate with first pipeline (30) and second pipeline (40) constitute can two-way ventilation the intake and exhaust pipeline; Said experimental provision also comprises flowmeter (50), and said flowmeter (50) is arranged on first pipeline (30) or second pipeline (40).
2. test unit according to claim 1; It is characterized in that: said branch line is two; Said branch line is communicated with first pipeline (30) and second pipeline (40); Independently of one another and arranged crosswise between branch line, said on-off element (60) are arranged at branch line and are communicated with between formed each node with first pipeline (30) and second pipeline (40).
3. test unit according to claim 1 and 2; It is characterized in that: said branch line comprises first branch line (70) and second branch line (80); Said second branch line (80) and the place of connection of first pipeline (30) are positioned at being communicated with between place and the pressurizer tank (10) of first branch line (70) and first pipeline (30); Described second branch line (80) and the place of connection of second pipeline (40) are positioned at being communicated with between place and blower fan (20) gas outlet of first branch line (70) and second pipeline (40), and described flowmeter (50) is arranged on being communicated with between place and the pressurizer tank (10) of second branch line (80) and first pipeline (30).
4. test unit according to claim 3; It is characterized in that: said first pipeline (30) is punished into twice arm (30a, 30b) in second branch line (80) and the connection of first pipeline (30) and is communicated with pressurizer tank (10); Described flowmeter (50) is two and is separately positioned on the twice arm (30a, 30b); Described flowmeter (50) comprises wide range flowmeter (51) and a small amount of range of flow meter (52), is provided with on-off element (60) on the described twice arm (30a, 30b).
5. test unit according to claim 1 is characterized in that: described on-off element (60) is a solenoid valve.
6. test unit according to claim 1 is characterized in that: described on-off element (60) all is connected outside frequency converter (90) with blower fan (20).
7. test unit according to claim 1 is characterized in that: described measuring point (11) is three.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200554108U CN202101853U (en) | 2011-03-04 | 2011-03-04 | Constant pressure difference and flow-stabilizing air channel testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200554108U CN202101853U (en) | 2011-03-04 | 2011-03-04 | Constant pressure difference and flow-stabilizing air channel testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202101853U true CN202101853U (en) | 2012-01-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200554108U Expired - Fee Related CN202101853U (en) | 2011-03-04 | 2011-03-04 | Constant pressure difference and flow-stabilizing air channel testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202101853U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105067272A (en) * | 2015-08-06 | 2015-11-18 | 中国北方发动机研究所(天津) | Engine airway test device |
| CN106441901A (en) * | 2016-09-12 | 2017-02-22 | 奇瑞汽车股份有限公司 | Air passage control system adapted to engine airway detection devices |
-
2011
- 2011-03-04 CN CN2011200554108U patent/CN202101853U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105067272A (en) * | 2015-08-06 | 2015-11-18 | 中国北方发动机研究所(天津) | Engine airway test device |
| CN105067272B (en) * | 2015-08-06 | 2017-06-16 | 中国北方发动机研究所(天津) | A kind of engine air flue experimental rig |
| CN106441901A (en) * | 2016-09-12 | 2017-02-22 | 奇瑞汽车股份有限公司 | Air passage control system adapted to engine airway detection devices |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120104 Termination date: 20150304 |
|
| EXPY | Termination of patent right or utility model |