CN203101016U - Tunnel ventilation physical model data acquisition system - Google Patents
Tunnel ventilation physical model data acquisition system Download PDFInfo
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- CN203101016U CN203101016U CN 201320065076 CN201320065076U CN203101016U CN 203101016 U CN203101016 U CN 203101016U CN 201320065076 CN201320065076 CN 201320065076 CN 201320065076 U CN201320065076 U CN 201320065076U CN 203101016 U CN203101016 U CN 203101016U
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Abstract
The utility model discloses a tunnel ventilation physical model data acquisition system. The system comprises a model, a piezoelectric conversion adapter, a pressure testing element, a wind speed testing element and acquisition software, wherein the model is composed of a tunnel and an air channel; the piezoelectric conversion adapter is composed of a piezoelectric converter and an adapter; the piezoelectric converter is fixed at the top of the model and is connected to the adapter via a shielded wire; the pressure testing element adopts a 361-type micro differential pressure sensor of the AI(Alpha Instruments) company and is used for testing the pressure in the air channel of the tunnel ventilation physical model and the pressure outside the model and converting pressure signals into corresponding direct current signals via the piezoelectric conversion adapter; the wind speed testing element is used for testing the wind speed in the tunnel ventilation physical model; and the acquisition software is used for implementing the functions of the piezoelectric conversion adapter, the pressure testing element and the wind speed testing element. The tunnel ventilation physical model data acquisition system provided by the utility model is stable in running and can accurately and rapidly acquire data and well meet test requirements; and the occurrence of defective conditions such as fires can be effectively sensed.
Description
Technical field
The utility model belongs to the highway tunnel ventilation field, relates in particular to a kind of tunnel ventilation physical model data acquisition system.
Background technology
Highway tunnel ventilation is thought low speed flow from the aerodynamics angle, and the tunnel ventilation physical experiments is the part of test fluid mechanics.To a complex flow phenomenon research experiment, variable factor is a lot of in the test, the condition restriction that is put to the test in addition, and majority can not carry out on material object.Tunnel ventilation is like this equally, and especially for complicated ventilating system, Theoretical Calculation and on-the-spot test are difficult to realize one by one, and many calculating parameter dependences are strong, need carry out the model test of system, provide theoretical analysis required underlying parameter, reliability and correctness that proof theory is analyzed.The tunnel ventilation physical model experiment need design the tunnel ventilation model, selection, installation.By calculating, select suitable blower fan and frequency conversion equipment as power system, Design and Machining blast, wind speed testing element, equipment such as piezoelectric transducer, blast transmitter are chosen in design.On original industrial general basis of software, develop the tunnel ventilation data acquisition monitoring system software that can show in real time with the real time record record.Getting more and more of China's tunnel construction, more and more longer, this just needs a kind of tunnel ventilation physical model data acquisition system of precision to go auxiliary people's design construction tunnel construction scheme.
The utility model content
At the problems referred to above, the utility model provides a kind of tunnel ventilation physical model data acquisition system.
The utility model is achieved in that a kind of tunnel ventilation physical model data acquisition system, comprising:
Model is made up of tunnel and air channel;
The piezoelectricity conversion adapter is made of piezoelectric transducer and adapter, and piezoelectric transducer is fixed on the top of model, by shielding line piezoelectric transducer is connected to adapter;
The pressure test element, adopt the 361 serial little differential pressure sensors of Alpha Instruments (Alpha's instrument), inner and the model external pressure in testing tunnel ventilation physical model air channel is converted to corresponding dc signal by the piezoelectricity conversion adapter with pressure signal;
The wind speed testing element, the inner wind speed of testing tunnel ventilation physical model.
Further, described tunnel ventilation physical model data acquisition system is provided with a plurality of measuring points in each test section, lays respectively at tunnel vault and abutment wall place, and pressure and wind speed testing element also are installed in the air channel.
Further, described tunnel ventilation physical model data acquisition system also is provided with temperature sensing device, is arranged on tunnel vault and abutment wall place.
The tunnel ventilation physical model data acquisition system that the utility model provides, stable, image data is well positioned to meet testing requirements accurately, fast, and temperature sensing device can effectively be responded to the generation of undesirable conditions such as fire.
Description of drawings
Fig. 1 is the structural representation of the tunnel ventilation physical model system that provides of the utility model.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
Fig. 1 shows the structural representation that the utility model provides.For convenience of explanation, only show the part relevant with the utility model.
Wind speed testing element 3, the inner wind speed of testing tunnel ventilation physical model;
Pressure test element 4, adopt the 361 serial little differential pressure sensors of Alpha Instruments (Alpha's instrument), inner and the model external pressure in testing tunnel ventilation physical model air channel is converted to corresponding dc signal by the piezoelectricity conversion adapter with pressure signal.
The utility model is equipped with commercially available existing acquisition software, is support with general calculation machine hardware and operating system, realizes the function of piezoelectricity conversion adapter, pressure test element, wind speed testing element.
Described tunnel ventilation physical model data acquisition system, the pressure survey front end adopts the wind-guiding piezometric tube, can measure total head, the dynamic pressure of wind speed tester device respectively by piezoelectric transducer.
Described tunnel ventilation physical model data acquisition system is provided with 3 measuring points in each test section, lays respectively at tunnel vault and abutment wall place, and pressure and wind speed testing element also are installed in the air channel.
Described tunnel ventilation physical model data acquisition system also is provided with temperature sensing device 5, is arranged on tunnel vault and abutment wall place.
The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.
Claims (3)
1. a tunnel ventilation physical model data acquisition system is characterized in that, comprising:
Model is made up of tunnel and air channel;
The piezoelectricity conversion adapter is made of piezoelectric transducer and adapter, and piezoelectric transducer is fixed on the top of model, by shielding line piezoelectric transducer is connected to adapter;
The pressure test element, the little differential pressure sensor of employing Alpha instrument, the inner and model external pressure in testing tunnel ventilation physical model air channel is converted to corresponding dc signal by the piezoelectricity conversion adapter with pressure signal;
The wind speed testing element, the inner wind speed of testing tunnel ventilation physical model.
2. tunnel ventilation physical model data acquisition system as claimed in claim 1 is characterized in that, in each test section a plurality of measuring points is set, and lays respectively at tunnel vault and abutment wall place, and pressure and wind speed testing element also are installed in the air channel.
3. tunnel ventilation physical model data acquisition system as claimed in claim 1 is characterized in that, also is provided with temperature sensing device, is arranged on tunnel vault and abutment wall place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320065076 CN203101016U (en) | 2013-02-05 | 2013-02-05 | Tunnel ventilation physical model data acquisition system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320065076 CN203101016U (en) | 2013-02-05 | 2013-02-05 | Tunnel ventilation physical model data acquisition system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203101016U true CN203101016U (en) | 2013-07-31 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320065076 Expired - Fee Related CN203101016U (en) | 2013-02-05 | 2013-02-05 | Tunnel ventilation physical model data acquisition system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203101016U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105571766A (en) * | 2014-10-11 | 2016-05-11 | 中国航空工业集团公司西安飞机设计研究所 | Surface pressure testing device for wind tunnel model |
| CN106157785A (en) * | 2016-09-12 | 2016-11-23 | 武汉科技大学 | A kind of multifunctional railway tunnel fire hazard experiment porch |
-
2013
- 2013-02-05 CN CN 201320065076 patent/CN203101016U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105571766A (en) * | 2014-10-11 | 2016-05-11 | 中国航空工业集团公司西安飞机设计研究所 | Surface pressure testing device for wind tunnel model |
| CN106157785A (en) * | 2016-09-12 | 2016-11-23 | 武汉科技大学 | A kind of multifunctional railway tunnel fire hazard experiment porch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130731 Termination date: 20140205 |