CN206503615U - Tunnel ventilation effect simulation detecting system based on natural ventilator - Google Patents
Tunnel ventilation effect simulation detecting system based on natural ventilator Download PDFInfo
- Publication number
- CN206503615U CN206503615U CN201621328901.4U CN201621328901U CN206503615U CN 206503615 U CN206503615 U CN 206503615U CN 201621328901 U CN201621328901 U CN 201621328901U CN 206503615 U CN206503615 U CN 206503615U
- Authority
- CN
- China
- Prior art keywords
- tunnel
- model
- blower fan
- plenum chamber
- natural
- 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
Abstract
A kind of tunnel ventilation effect simulation detecting system based on natural ventilator, including model tunnel (1), natural ventilator supply air system (2), pressure test device (3), wind speed detection device (4), search gas air supply system (5) and trace gas detection system (6)；Natural ventilator supply air system includes plenum chamber (21) and blower fan (22), the port of model length of tunnel direction one end is passed through in plenum chamber, the air outlet of the blower fan is connected with plenum chamber and the shaft center line and tunnel central axis of blower fan are misaligned, so that the air outlet of blower fan is not relative with tunnel portal, blower fan provides tunnel the uniform air-flow for natural wind in simulation tunnel by plenum chamber；The natural wind simulating that the utility model is obtained is uniform and close to virtual condition, and the scattered each trace gas concentration instrument for discharging and being used to detect search gas of search gas is dispersed placement, and the pollutant concentration data of detection are reliably accurate.
Description
Technical field
The utility model is related to tunnel operating mode apparatus for demonstrating, particularly, is related to a kind of tunnel ventilation effect simulation detection system
System.
Background technology
With continuing to develop for China Transportation Industry, tunnel plays an important role in urban road, due in tunnel
Vehicle be in one closing environment in, the waste gas and pollutant that vehicle is discharged in tunnel can not spread in time, therefore tunnel
The ventilation effect in road plays vital effect to the diffusion of pollutant in tunnel and the safety of occupant, and car in tunnel
Flow is usually non-constant, pollutant kind is more and discharge capacity is also non-constant, in addition, the wind speed of extraneous natural wind is also not
Determine, therefore hardly result in and more accurately detect data, naturally also can not accurately calculate the ventilation effect in tunnel, therefore,
A kind of scheme is needed to improve this problem.
Utility model content
The utility model purpose is to provide a kind of tunnel ventilation effect simulation detecting system, to solve to carry in background technology
The problem of going out.
To achieve the above object, the utility model is provided
A kind of tunnel ventilation effect simulation detecting system based on natural ventilator, including model tunnel 1, natural ventilator
Supply air system 2, pressure test device 3, wind speed detection device 4, search gas air supply system 5 and trace gas detection system 6；
The natural ventilator supply air system includes plenum chamber 21 and blower fan 22, the port of model length of tunnel direction one end
It is passed through in plenum chamber, the air outlet of the blower fan is connected with plenum chamber and the shaft center line of blower fan is not weighed with tunnel central axis
Close also not parallel so that the air outlet of blower fan is not relative with model tunnel ventilation entrance, and blower fan is by plenum chamber to model tunnel
The uniform air-flow for being used to simulate natural wind in actual tunnel is provided, the blower fan is connected with arrangements for speed regulation, and arrangements for speed regulation are used for
Control rotation speed of fan and different wind speed are provided for model tunnel；
The pressure test device includes the micro-pressure sensor for being separately positioned on model length of tunnel direction two ends port
A31 and micro-pressure sensor B32, the air pressure that two micro-pressure sensors are used between real-time detection model tunnel two-port is so as in time
The pressure difference between model tunnel two-port is obtained, model tunnel inner wall is provided with along some of model length of tunnel direction spacing distribution
The individual wind speed detection device 4；
Model length of tunnel direction is provided with aeration tube 12 in the middle of model tunnel inner bottom part, aeration tube is provided with spacing point
Several solarization air caps of cloth, it is ensured that search gas is uniformly quickly full of in tunnel, and the search gas air supply system is with exposing
Tracheae connects and is aeration tube supply, the trace gas detection system include being arranged in the middle of model tunnel inner bottom part along mould
Several trace gas concentration instrument A61 of type length of tunnel direction spacing distribution, the trace gas detection system also includes setting
Put several trace gas concentration instrument B62 being distributed along model tunnel height direction spacing in model tunnel.
Further, model tunnel-side offers several maintenance windows along model length of tunnel direction equidistant arrangement
13, each maintenance window is equipped with retractable hermatic door, opens hermatic door, you can to the trace gas concentration in model tunnel
Instrument, aeration tube and other devices are adjusted.
Plenum chamber side wall is provided with the blind window for static pressure difference between the two-port of Controlling model length of tunnel direction
211。
Plenum chamber side wall is provided with transparent window 212.
The aeration tube 12 is provided with the extension in the section at model tunnel 1 and the communicating position of plenum chamber 2
121。
The tunnel ventilation effect simulation detecting system also includes being arranged on top in model the tunnel outside and is located at length direction
The vertical shaft 7 of middle position, silo bottom is connected with model tunnel, and shaft top is provided with Unpowered ventilation device 8；It is unpowered logical
Wind device is used to combine the tunnel ventilation effect under the natural wind simulating of blower fan 22 and Unpowered ventilation device collective effect.
The utility model, provided with vertical shaft and Unpowered ventilation device, can combine blower fan natural wind simulating in model tunnel top
With the tunnel ventilation effect under Unpowered ventilation device collective effect, only a kind of spike gas in model tunnel of the present utility model
Body, search gas disperses discharge and the stable production of discharge capacity is adjustable, in addition, each trace gas concentration instrument for detecting search gas
It is dispersed placement, the pollutant concentration data of detection are more reliable, and obtained ventilation effect data are also more accurate.
In addition to objects, features and advantages described above, the utility model also has other purposes, feature and excellent
Point.Below with reference to figure, the utility model is described in further detail.
Brief description of the drawings
The accompanying drawing for constituting the part of the application is used for providing further understanding to of the present utility model, of the present utility model
Schematic description and description is used to explain the utility model, does not constitute to improper restriction of the present utility model.In accompanying drawing
In：
Fig. 1 is the overall structure diagram of the utility model preferred embodiment.
In figure：1- models tunnel, 11- wind speed survey mouth, 12- aeration tubes, 121- extensions, 13- maintenance windows, 14- layer frames,
2- natural ventilator supply air systems, 21- plenum chambers, 211- blind windows, 212- transparent windows, 22- blower fans, 3- pressure differential detections dress
Put, 31- micro-pressure sensors A, 32- micro-pressure sensor B, 4- wind speed detection device, 5- search gas air supply systems, 6- search gas
Detecting system, 61- trace gas concentration instrument A, 62- trace gas concentration instrument B, 7- vertical shafts, 8- Unpowered ventilation devices, 9- flows are adjusted
Save valve.
Embodiment
Embodiment of the present utility model is described in detail below in conjunction with accompanying drawing, but the utility model can be according to power
Profit requires to limit and the multitude of different ways of covering is implemented.
Referring to a kind of Fig. 1 tunnel ventilation effect simulation detecting system, including model tunnel 1, natural ventilator air-supply system
System 2, pressure test device 3, wind speed detection device 4, search gas air supply system 5 and trace gas detection system 6.The present embodiment
In, model tunnel presses 1：15 model scale simulates the actual tunnel of 300m length, and model tunnel overall length 20m is divided into every section of 2m, altogether
10 sections；Plenum chamber is 2.5m*1.5m prismatic shape, in the present embodiment, replaces dirty in tunnel as search gas from CO
Contaminate thing.
Natural ventilator supply air system includes plenum chamber 21 and blower fan 22, and the port of model length of tunnel direction one end is passed through
In plenum chamber, the air outlet of blower fan connected with plenum chamber and blower fan shaft center line and tunnel central axis upright, blower fan connects
Arrangements for speed regulation are connected to, arrangements for speed regulation are used to control rotation speed of fan and provide different wind speed for model tunnel.In the present embodiment, adjust
Speed variator connects the variable-frequency motor of control using frequency converter and by frequency converter, and blower fan is connected with variable-frequency motor.
Pressure test device include being separately positioned on the micro-pressure sensor A31 of model length of tunnel direction two ends port with
Micro-pressure sensor B32, the air pressure that two micro-pressure sensors are used between real-time detection model tunnel two-port so as to obtain in time
Pressure difference between model tunnel two-port, model tunnel inner wall is provided with several wind being equally spaced along model length of tunnel direction
Speed surveys mouth 11, and it is 0.5~2.5m, wind speed detection device that two neighboring wind speed, which is surveyed between mouth along the spacing in model length of tunnel direction,
4, which are arranged on wind speed, surveys at mouth, and each wind speed surveys mouth and is both provided with a wind speed detection device.
Model tunnel inner bottom surface middle is provided with aeration tube 12 along model length of tunnel direction, and aeration tube is provided with equidistant
Several solarization air caps of distribution, it is ensured that search gas is uniformly quickly full of in tunnel, and search gas air supply system is with being aerated
Pipe is connected and is aeration tube supply, and the flow of regulation trace gas fluxes is connected between search gas air supply system and aeration tube
Regulating valve 9, trace gas detection system include being arranged on model tunnel inner bottom surface middle along model length of tunnel direction etc.
In several trace gas concentrations instrument A61 away from distribution, the present embodiment, each trace gas concentration instrument A61 is located at same straight line
On, distance of the two neighboring trace gas concentration instrument along model length of tunnel direction is 0.5~2.5m.
Trace gas detection system also include be arranged in model tunnel along model tunnel height direction spacing be distributed
In several trace gas concentrations instrument B62, the present embodiment, layer frame 14 is provided with model tunnel, layer frame 14 is provided with some plates layer by layer,
Along the distance in model tunnel height direction be 100~150mm between adjacent two layers plate, per plate from level to level on be provided with spike gas
Bulk concentration instrument B62.
In the present embodiment, model tunnel-side offers several access panels along model length of tunnel direction equidistant arrangement
Mouth 13, each maintenance window is equipped with retractable hermatic door, opens hermatic door, can be to the trace gas concentration in model tunnel
Instrument, aeration tube and other devices are adjusted.
In the present embodiment, plenum chamber side wall is provided with for static pressure difference between the two-port of Controlling model length of tunnel direction
Blind window 211, the pressure into the gas in model tunnel is adjusted by adjusting the aperture of blind window hinge.
In the present embodiment, plenum chamber side wall is provided with transparent window 212, is easy to detect plenum chamber inner case.
Aeration tube 12 is provided with the extension 121 in the section at model tunnel 1 and the communicating position of plenum chamber 2.
Meta is hit exactly at the top of tunnel ventilation effect simulation detecting system is additionally arranged at outside model tunnel and positioned at length direction
The vertical shaft 7 put, the present embodiment, vertical shaft internal diameter is 160mm, and silo bottom is connected with model tunnel, and shaft top is provided with without dynamic
Power ventilator 8；Unpowered ventilation device is used to combine the tunnel under the natural wind simulating of blower fan 22 and Unpowered ventilation device collective effect
Ventilation effect.
Detection process of the present utility model approximately as：
Vertical shaft required airflow is set according to actual tunnel, by adjusting air-blower control natural wind speed so that natural ventilator is sent
Wind system exhaust air rate reaches the required airflow requirement of setting.Adjust model tunnel face blower fan wind speed so that model tunnel port wind speed
Respectively 1m/s, 2m/s, 3m/s, 4m/s, 5m/s, according to actual tunnel CO discharge capacitys, are passed through mutually on year-on-year basis to model tunnel internal
The CO of example (1/15), according to operating condition of test, CO concentration in rating model tunnel contrasts no vertical shaft and Unpowered ventilation device situation
Under, CO concentration experiments result in model tunnel, so as to draw the ventilation effect of actual tunnel, and it is appropriate according to this and rationally take increasing
The measure of strong actual tunnel ventilation effect, while ventilation effect is ensured, reduces equipment cost.
Preferred embodiment of the present utility model is these are only, the utility model is not limited to, for this area
Technical staff for, the utility model can have various modifications and variations.It is all it is of the present utility model spirit and principle within,
Any modification, equivalent substitution and improvements made etc., should be included within protection domain of the present utility model.
Claims (6)
1. a kind of tunnel ventilation effect simulation detecting system based on natural ventilator, it is characterised in that including model tunnel
(1), natural ventilator supply air system (2), pressure test device (3), wind speed detection device (4), search gas air supply system (5)
And trace gas detection system (6)；
The natural ventilator supply air system includes plenum chamber (21) and blower fan (22), the port of model length of tunnel direction one end
It is passed through in plenum chamber, the air outlet of the blower fan is connected with plenum chamber and the shaft center line of blower fan is not weighed with tunnel central axis
Close also not parallel so that the air outlet of blower fan is not relative with model tunnel ventilation entrance, and blower fan is by plenum chamber to model tunnel
The uniform air-flow for being used to simulate natural wind in actual tunnel is provided, the blower fan is connected with arrangements for speed regulation, and arrangements for speed regulation are used for
Control rotation speed of fan and different wind speed are provided for model tunnel；
The pressure test device includes the micro-pressure sensor A (31) for being separately positioned on model length of tunnel direction two ends port
With micro-pressure sensor B (32), the air pressure that two micro-pressure sensors are used between real-time detection model tunnel two-port is so as in time
The pressure difference between model tunnel two-port is obtained, model tunnel inner wall is provided with along some of model length of tunnel direction spacing distribution
The individual wind speed detection device (4)；
Model length of tunnel direction is provided with aeration tube (12) in the middle of model tunnel inner bottom part, aeration tube is distributed provided with spacing
Several solarization air caps, the search gas air supply system is connected with aeration tube and is aeration tube supply, search gas inspection
Examining system includes being arranged on several spike gas being distributed along model length of tunnel direction spacing in the middle of model tunnel inner bottom part
Bulk concentration instrument A (61), the trace gas detection system also include being arranged in model tunnel along model tunnel height direction
Several trace gas concentration instrument B (62) of spacing distribution.
2. a kind of tunnel ventilation effect simulation detecting system based on natural ventilator according to claim 1, its feature
It is, model tunnel-side offers several maintenance windows (13), Mei Gejian along model length of tunnel direction equidistant arrangement
Repair window and be equipped with retractable hermatic door, open hermatic door, you can to trace gas concentration instrument, the aeration tube in model tunnel
And other devices are adjusted.
3. a kind of tunnel ventilation effect simulation detecting system based on natural ventilator according to claim 1, its feature
It is, plenum chamber side wall is provided with the blind window for static pressure difference between the two-port of Controlling model length of tunnel direction
(211)。
4. a kind of tunnel ventilation effect simulation detecting system based on natural ventilator according to claim 1, its feature
It is, plenum chamber side wall is provided with transparent window (212).
5. a kind of tunnel ventilation effect simulation detecting system based on natural ventilator according to claim 1, its feature
It is, the aeration tube (12) is provided with the extension in the section at model tunnel (1) and plenum chamber (21) communicating position
Manage (121).
6. a kind of tunnel ventilation effect simulation inspection based on natural ventilator according to any one in Claims 1 to 5
Examining system, it is characterised in that the tunnel ventilation effect simulation detecting system also includes being arranged on top and position outside model tunnel
Vertical shaft (7) in length direction middle position, silo bottom is connected with model tunnel, and shaft top is provided with Unpowered ventilation
Device (8)；The tunnel that Unpowered ventilation device is used to combine under blower fan (22) natural wind simulating and Unpowered ventilation device collective effect leads to
Wind effect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621328901.4U CN206503615U (en) | 2016-12-06 | 2016-12-06 | Tunnel ventilation effect simulation detecting system based on natural ventilator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621328901.4U CN206503615U (en) | 2016-12-06 | 2016-12-06 | Tunnel ventilation effect simulation detecting system based on natural ventilator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206503615U true CN206503615U (en) | 2017-09-19 |
Family
ID=59843096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621328901.4U Expired - Fee Related CN206503615U (en) | 2016-12-06 | 2016-12-06 | Tunnel ventilation effect simulation detecting system based on natural ventilator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206503615U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109139083A (en) * | 2018-09-12 | 2019-01-04 | 中国矿业大学 | Shield-tunneling construction tunnel ventilation dilutes the experimental system for simulating for pouring in methane gas |
| CN109282962A (en) * | 2018-09-17 | 2019-01-29 | 淮北辰威科技有限公司 | A kind of buildings model room ventilation test device and its application method |
| CN109611139A (en) * | 2018-10-29 | 2019-04-12 | 同济大学 | A kind of gravity-flow ventilation tunnel ventilation mechanism pilot system |
| CN111456795A (en) * | 2020-04-14 | 2020-07-28 | 中国计量大学 | Ventilation test device for proximity continuous tunnel group and manufacturing method |
| CN111980741A (en) * | 2020-08-12 | 2020-11-24 | 河南高建工程管理有限公司 | Tunnel ventilation system and evaluation method |
-
2016
- 2016-12-06 CN CN201621328901.4U patent/CN206503615U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109139083A (en) * | 2018-09-12 | 2019-01-04 | 中国矿业大学 | Shield-tunneling construction tunnel ventilation dilutes the experimental system for simulating for pouring in methane gas |
| CN109282962A (en) * | 2018-09-17 | 2019-01-29 | 淮北辰威科技有限公司 | A kind of buildings model room ventilation test device and its application method |
| CN109611139A (en) * | 2018-10-29 | 2019-04-12 | 同济大学 | A kind of gravity-flow ventilation tunnel ventilation mechanism pilot system |
| CN111456795A (en) * | 2020-04-14 | 2020-07-28 | 中国计量大学 | Ventilation test device for proximity continuous tunnel group and manufacturing method |
| CN111456795B (en) * | 2020-04-14 | 2021-10-19 | 中国计量大学 | Ventilation test device for proximity continuous tunnel group and manufacturing method |
| CN111980741A (en) * | 2020-08-12 | 2020-11-24 | 河南高建工程管理有限公司 | Tunnel ventilation system and evaluation method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206503615U (en) | Tunnel ventilation effect simulation detecting system based on natural ventilator | |
| CN206223618U (en) | A kind of daily protective mask test system | |
| Chu et al. | An experimental study of wind-driven cross ventilation in partitioned buildings | |
| CN102141482B (en) | Air conditioning ventilation combination test bench | |
| Zaki et al. | Analysis of airflow inside a two-sided wind catcher building | |
| CN104198344A (en) | Airflow-fog drop-dust three-phase medium coupling sedimentation experimental device and method | |
| CN104061964B (en) | A kind of test system and its method of testing of house kitchen central exhaust gas extraction system | |
| CN206762902U (en) | A kind of high-low temperature test chamber of uniformity of temperature profile | |
| CN105550467A (en) | Building method of wall surface flowing model of high-speed wind tunnel inclined hole wall | |
| CN102818691A (en) | Super large cooling tower simulation test device and feature test method | |
| CN205317638U (en) | Sand -and -dust test chamber | |
| CN104500124B (en) | A kind of city tunnel ventilation testing device and making method thereof | |
| CN205826264U (en) | A kind of dust atmosphere analogue measurement system | |
| CN206653889U (en) | A kind of automobile-used purifier | |
| Song et al. | Research on a push-pull industrial trough-side exhaust hood based on CFD simulation and experiment | |
| CN204329208U (en) | A kind of air filtering system for pig house | |
| CN106968700B (en) | A kind of mine ventilation system and its control method | |
| CN103940581B (en) | A kind of experimental technique of monitoring trace gas concentration value measurement jet entrainment amount | |
| CN201047814Y (en) | Dust generator for dust instrument checking device | |
| CN206132136U (en) | Subway station table screen covers an air leakage detecting system | |
| CN105333908B (en) | IVC system cage box environment measuring equipment and its scaling method | |
| CN206974857U (en) | The permeability test research device of light source under a kind of haze environment | |
| CN208171620U (en) | Vehicle air purifier device for detecting performance | |
| CN208270407U (en) | Remote vehicle emissions detection zone minute yardstick pollutant inhibits disperser | |
| CN207350689U (en) | A kind of climatic chamber incubator equivalent at the uniform velocity air-returning device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170919 Termination date: 20181206 |