CN202788903U - Ventilation system applied to tunnel construction - Google Patents
Ventilation system applied to tunnel construction Download PDFInfo
- Publication number
- CN202788903U CN202788903U CN 201220359593 CN201220359593U CN202788903U CN 202788903 U CN202788903 U CN 202788903U CN 201220359593 CN201220359593 CN 201220359593 CN 201220359593 U CN201220359593 U CN 201220359593U CN 202788903 U CN202788903 U CN 202788903U
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- tunnel
- jet blower
- gas analyzer
- air
- ventilation system
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Abstract
The utility model discloses a ventilation system applied to tunnel construction. The ventilation system comprises a ventilation mechanism; the ventilation mechanism comprises an air supply device and an air exhaust device, the air exhaust device comprises jet fans (2) provided with gas analyzers (1), and the jet fans (2) are positioned in a tunnel; the air exhaust device further comprises a control system connected with the gas analyzers (1) and the jet fans (2), the control system comprises a central controller and an index controller which are connected with each other, and the central controller is connected onto the jet fans (2); and the index controller is connected with the gas analyzers (1). The ventilation system is reasonable in design, the pollution level of air in the tunnel can be accurately and directly measured, intelligent control for ventilation in the tunnel is realized, and purposes of energy conservation and emission reduction are achieved.
Description
Technical field
The utility model relates to the constructing tunnel field, specifically, is the ventilation system that is applied to constructing tunnel.
Background technology
For construction of tunnel, have and build underground or under water and place an iron railway for the current passage of locomotive motor vehicle, also be useful on the tunnel of power station diversion, and all has the effect of cut-offfing, in work progress, the ventilation scheme in tunnel can determine according to tunnel topographic features of living in, determines that ventilation installation is set wherein has more operability, and more economical.
In the engineering of, hole line length large at edpth of tunnel, space complicated layout, adopt worked in coordination with ventilation scheme more, comprise some periods such as beforehand research in early stage, adjustment in mid-term and later stage adjustment, and so-called collaborative ventilation scheme is exactly to take full advantage of the space resources of each trunk, adopt axial flow blower by airduct fresh air to be passed to face (that is: the work plane in the open excavation), then adopt the collaborative foul atmosphere of discharging of jet blower, as shown in Figure 1.Take the diversion tunnel of Jinping hydropower station as example, the hole line length is 16.67km, adopts collaborative ventilation scheme, every 240m arranges a SDS-180 type 75KW/37KW jet blower in its barrel section, is used for auxiliary blowdown.In order to ensure the normal ventilation in the tunnel, in the construction operation peak period all jet blowers are opened maximum wind velocity, at the operation low peak period all jet blowers are opened less wind speed, and just closing all blower fans under the suspended state fully.This shows that this Fan Regulation mode exists that efficient is low, energy consumption is high, easy hysteresis, the shortcoming such as uneconomical.Therefore, be necessary to seek a kind ofly can control in real time, energy consumption is less, the ventilation intelligent control method of economy.
The utility model content
The purpose of this utility model is to provide the ventilation system that is applied to constructing tunnel, and it detects the concentration of pernicious gas in the tunnel by gas analyzer, and with this control that realizes jet blower is opened number of units and frequency, has the purpose of energy-conserving and environment-protective.
The utility model is achieved through the following technical solutions: the ventilation system that is applied to constructing tunnel, comprise the ventilating mechanisms that is formed by air-supply arrangement and air exhausting device, air exhausting device described in the utility model comprises the jet blower that is provided with gas analyzer, described jet blower is positioned at the tunnel, in actual application, gas analyzer can be according to the index control jet blower fan of air quality in the tunnel, and the ventilation system in the reasonable arrangement tunnel, reaches the purpose of energy-saving and emission-reduction.
For better realizing the utility model, described air exhausting device also comprises the control system that connects gas analyzer and jet blower, described control system comprises interconnective central controller and directive controller, and described central controller is connected on the jet blower; Described directive controller then is connected with gas analyzer, can control jet blower and open number of units and frequency, and gas analyzer wherein then can detect the air quality the tunnel in, as: CO or SO in the air in the detection tunnel
2Content.
Described gas analyzer is positioned at air outlet one side of jet blower, buried depth is large because the utility model is mainly used in, in the construction of tunnel of hole line length, space complicated layout, therefore, the quantity of described jet blower is more than two, and vertically is equally spaced in the tunnel.
For better measuring air quality in the tunnel, the described quantity of being located at the gas analyzer on every jet blower is more than one, in measuring process, get the average of numerical value that every gas analyzer is surveyed and be the actual air index of this jet blower air outlet, and by being attached thereto the control system that connects, judgement and realization guarantee constructor's normal operation to the adjusting of jet blower frequency.
For better realizing above-mentioned detection, the described quantity of being located at the gas analyzer on every jet blower is three, and equidistant vertically distribution.
Air-supply arrangement described in the utility model comprises the axial flow blower that is provided with airduct, described axial flow blower is located at tunnel portal, the air outlet of described airduct then is positioned at the face in tunnel, face is the work plane in the open excavation, in the construction operation of reality, because the pernicious gas that explosion or internal combustion engine produce, be difficult to guarantee constructing tunnel personnel's safety, therefore, adopt axial flow blower, then the fresh air outside the hole can be sent into face, and by the auxiliary air draft of jet blower the foul atmosphere of face be discharged, guarantee carrying out smoothly of duration.
Gas analyzer described in the utility model is the C600 infrared ray gas analyzer, can continuous measurement CO, CO
2, CH
4, SO
2, NO
2, the gas such as NO concentration, also can measure simultaneously one or more gas componant.
The utility model compared with prior art has the following advantages and beneficial effect:
(1) the utility model is equipped with the C600 infrared ray gas analyzer at the air outlet place of every jet blower, can accurately, directly measure the degree of contamination of air in the tunnel, in actual application, but continuous measurement CO, CO
2, CH
4, SO
2, NO
2, the gas such as NO concentration, also can measure simultaneously one or more gas componant, and can satisfy the requirement of tunnel Detection of Air Quality.
(2) the utility model passes through control system, can realize the intellectuality control of tunnel ventilation, its Main Function exists: the numerical value of the harmful gas concentration that records according to gas analyzer, obtain directly control index, and unlatching number of units and the class of the control index control jet blower fan by gained, and then control air quantity and the wind speed of whole ventilation system.
(3) the utility model is equipped with three gas analyzers at every jet blower, get the average that three gas analyzers record numerical value, be the control index of every jet blower, can reduce the error of detection, improve ventilation system to the filth-discharging effect of foul atmosphere.
(4) the utility model is simple in structure, reasonable in design, can guarantee on the one hand the normal ventilation of tunnel, can also automatically regulate fan delivery size and blower fan number of units according to the different ventilation requirement of tunnel on the other hand, finally reach the targets such as real-time control, high-efficient ventilation, energy-saving and emission-reduction.
Description of drawings
Fig. 1 is the structural representation of ventilation system in the prior art.
Fig. 2 is the structural representation of the utility model air exhausting device.
Fig. 3 is theory diagram of the present utility model.
Fig. 4 is that the utility model is for detection of CO, SO
2The time control chart.
1-gas analyzer wherein, 2-jet blower, 3-airduct, 4-axial flow blower, 5-face.
The specific embodiment
Below in conjunction with embodiment the utility model is described in further detail, but embodiment of the present utility model is not limited to this.
Embodiment:
Be applied to the ventilation system of constructing tunnel, comprise the ventilating mechanisms that is formed by air-supply arrangement and air exhausting device, in the prior art, air exhausting device comprises the jet blower 2 that is positioned at the tunnel, its role is to the foul atmosphere in the collaborative air-supply arrangement discharge tunnel, for guaranteeing the normal ventilation in the tunnel, the distance of common every interval 200～300m namely arranges a jet blower 2, as shown in Figure 1.In the construction operation peak period all jet blowers 2 are opened maximum wind velocity, then all jet blowers 2 are opened less wind speed at the operation low peak period, just closing all jet blowers 2 under the suspended state fully, and in its actual application process, above-mentioned jet blower 2 regulative modes exist also that efficient is low, energy consumption is high, easy hysteresis, the shortcoming such as uneconomical.For reducing its energy consumption, the utility model adopts structure as shown in Figure 2, that is: air exhausting device comprises the jet blower 2 that is provided with gas analyzer 1, comes the ventilation system in the reasonable arrangement tunnel, and reaches the purpose of energy-saving and emission-reduction.
For realizing the intellectuality control of jet blower 2, air exhausting device also comprises the control system that connects gas analyzer 1 and jet blower 2, control system is comprised of interconnective central controller and directive controller, as shown in Figure 3, its annexation is as follows: central controller is connected on the jet motor 2; Directive controller then is connected with gas analyzer 1.
Such as Fig. 2, shown in Figure 3, the principle that realizes jet blower 2 intelligent controls can be summarized as follows: gas analyzer 1 is for detecting the checkout gear of the air quality in the tunnel, when carrying out the construction in tunnel, the numerical value of gas analyzer 1 detectable harmful gas concentration, and be sent to directive controller, simultaneously, by the control of central controller realization to jet blower 2, and then realization is to the adjusting of air quantity and the wind speed of whole ventilation system.The utility model can accurately, directly be measured the degree of contamination of air in the tunnel, and in actual application, gas analyzer 1 can adopt the C600 infrared ray gas analyzer, but continuous measurement CO, CO
2, CH
4, SO
2, NO
2, the gas such as NO concentration, also can measure simultaneously one or more gas componant, can satisfy the requirement of tunnel Detection of Air Quality, air quality grade in the tunnel then can be divided into four grades, be: requisite quality, pollute more serious, seriously polluted and pollute extremely serious, wherein, each grade has all been set the content limit of controlled gas in the air quality, and corresponding with air quantity and the wind speed of jet blower 2, jet blower 2 then is divided into four gears by the large I of its air quantity and wind speed, that is: I shelves, II shelves, III shelves and IV shelves.
For better measuring the concentration index of pernicious gas in the tunnel, as shown in Figure 2, gas analyzer 1 should be positioned at air outlet one side of jet blower 2, the quantity of jet blower 2 is more than two, and vertically be equally spaced in the tunnel, and for gas analyzer 1, the quantity of being located at the gas analyzer 1 on every jet blower 2 is more than one, in testing process, get the average of numerical value that every gas analyzer 1 is surveyed and be the actual air index of these jet blower 2 air outlets, and by being attached thereto the control system that connects, judgement and realization guarantee constructor's normal operation to the adjusting of jet blower 2 frequencies.
In the utility model, the quantity of being located at the gas analyzer 1 on every jet blower 2 is three, and equidistant vertically distribution, because it is large that the utility model is mainly used in buried depth, the hole line length, in the construction of tunnel of space complicated layout, in the practice of construction operation, can be according to actual hole line length and space deployment scenarios, the spacing distance of jet blower 2 is set, take the diversion tunnel of Jinping hydropower station as example, the diversion system in this power station adopts four holes, eight machine arrangement forms, average hole line length from water inlet to the upstream surge-chamber is about 16.67km, center to center distance 60m, and main shaft azimuth, hole is N58 ° of W, the Diversion Tunnel group goes up the general buried depth 1500～2000m of overlying strata body along the line, maximum buried depth is about 2525m, and it is large to have a buried depth, the hole line length, the large characteristics in footpath, hole are worldwide largest hydraulic tunnel engineering.In its work progress, adopt collaborative ventilation scheme, every 240m arranges a SDS-180 type 75KW/37KW jet blower 2 in its barrel section, be used for auxiliary blowdown, every jet blower 2 and three C600 infrared ray gas analyzers consist of a combination, are distributed on air-out one side of jet blower 2, the concentration index of the pernicious gas that the C600 infrared ray gas analyzer obtains, get one group three gained indexs average as control index, control jet blower fan 2 switches and gear.
Air-supply arrangement described in the utility model is the same with prior art, comprise the axial flow blower 4 that is provided with airduct 3, as shown in Figure 1, axial flow blower 4 is located at tunnel portal, the air outlet of airduct 3 then is positioned at the face 5 in tunnel, face 5 is the work plane in the open excavation, in the construction operation of reality, owing to the pernicious gas of explosion or internal combustion engine generation, be difficult to guarantee constructing tunnel personnel's safety, therefore, adopt axial flow blower 4, then the fresh air outside the hole can be sent into face 5, and by the auxiliary air draft of jet blower 2 foul atmosphere of face 5 be discharged, guarantee carrying out smoothly of duration.
Fig. 4 is that the utility model is for detection of CO, SO
2The time control chart, as shown in Figure 4, the jet blower 2 in the tunnel is according to being 1#, 2#, 3# by the hole to the direction number consecutively in the hole ... n# utilizes control system that the volume of blower fan is opened and controls.The method of its control is: start at from 1#, if m(≤5 are arranged) platform jet blower 2 is in " low speed " running status continuously, then closes less (m-1) platform jet blower 2 of numbering, keep to open a larger jet blower 2 of numbering; M is 5 to the maximum, and multipotency is closed 4 continuous jet blowers 2; When running into, the centre jet blower 2 states are arranged when " low speed ", then from next from new calculating.This shows, all good when tunnel Air quality, when all jet blowers 2 all are in " low speed " state, be numbered 5k#(k=1,2 ...) blower fan is " low speed ", all the other are closed.
The utility model is reasonable in design, can accurately, directly measure the degree of contamination of air in the tunnel, and realizes the intellectuality control of ventilation in the tunnel, reaches the purpose of energy-saving and emission-reduction.
The above; it only is preferred embodiment of the present utility model; be not that the utility model is done any pro forma restriction, every foundation technical spirit of the present utility model all falls within the protection domain of the present utility model any simple modification, equivalent variations that above embodiment does.
Claims (7)
1. be applied to the ventilation system of constructing tunnel, comprise the ventilating mechanisms that is formed by air-supply arrangement and air exhausting device, it is characterized in that: described air exhausting device comprises the jet blower (2) that is provided with gas analyzer (1), and described jet blower (2) is positioned at the tunnel.
2. the ventilation system that is applied to constructing tunnel according to claim 1, it is characterized in that: described air exhausting device also comprises the control system that connects gas analyzer (1) and jet blower (2), described control system comprises interconnective central controller and directive controller, and described central controller is connected on the jet blower (2); Described directive controller then is connected with gas analyzer (1).
3. the ventilation system that is applied to constructing tunnel according to claim 2, it is characterized in that: described gas analyzer (1) is positioned at air outlet one side of jet blower (2); The quantity of described jet blower (2) is more than two, and vertically is equally spaced in the tunnel.
4. the ventilation system that is applied to constructing tunnel according to claim 3, it is characterized in that: the described quantity of being located at the gas analyzer (1) on every jet blower (2) is more than one.
5. the ventilation system that is applied to constructing tunnel according to claim 4, it is characterized in that: the described quantity of being located at the gas analyzer (1) on every jet blower (2) is three, and equidistantly vertically distributes.
6. the ventilation system that is applied to constructing tunnel according to claim 5, it is characterized in that: described air-supply arrangement comprises the axial flow blower (4) that is provided with airduct (3), described axial flow blower (4) is located at tunnel portal, and the air outlet of described airduct (3) then is positioned at the face (5) in tunnel.
7. the ventilation system that is applied to constructing tunnel according to claim 6, it is characterized in that: described gas analyzer (1) is the C600 infrared ray gas analyzer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220359593 CN202788903U (en) | 2012-07-24 | 2012-07-24 | Ventilation system applied to tunnel construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220359593 CN202788903U (en) | 2012-07-24 | 2012-07-24 | Ventilation system applied to tunnel construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202788903U true CN202788903U (en) | 2013-03-13 |
Family
ID=47816178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220359593 Expired - Fee Related CN202788903U (en) | 2012-07-24 | 2012-07-24 | Ventilation system applied to tunnel construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202788903U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104612739A (en) * | 2014-11-28 | 2015-05-13 | 中铁二十三局集团有限公司 | Small-section tunnel single-head long-distance ventilation construction method |
| CN106837401A (en) * | 2017-03-23 | 2017-06-13 | 中铁五局集团成都工程有限责任公司 | Narrow tunnel isolates aeration structure |
| CN108414700A (en) * | 2018-05-24 | 2018-08-17 | 上海公路桥梁（集团）有限公司 | Pipeline construction detecting system |
| CN108868859A (en) * | 2018-06-20 | 2018-11-23 | 中钢集团马鞍山矿山研究院有限公司 | A kind of mine skip shaft outgoing airflow shuts off partitioning system |
| CN110207307A (en) * | 2019-07-01 | 2019-09-06 | 兰州大学 | A kind of indoor intelligent ventilating system |
| CN111810212A (en) * | 2020-06-01 | 2020-10-23 | 上海市政工程设计研究总院（集团）有限公司 | Long-distance ventilation section of comprehensive pipe gallery and ventilation method thereof |
| CN111894885A (en) * | 2020-08-01 | 2020-11-06 | 中国水利水电第七工程局有限公司 | Tunnel fan intelligent control system and control method |
| CN112049675A (en) * | 2020-07-14 | 2020-12-08 | 中电建路桥集团有限公司 | Tunnel ventilation method |
-
2012
- 2012-07-24 CN CN 201220359593 patent/CN202788903U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104612739A (en) * | 2014-11-28 | 2015-05-13 | 中铁二十三局集团有限公司 | Small-section tunnel single-head long-distance ventilation construction method |
| CN106837401A (en) * | 2017-03-23 | 2017-06-13 | 中铁五局集团成都工程有限责任公司 | Narrow tunnel isolates aeration structure |
| CN108414700A (en) * | 2018-05-24 | 2018-08-17 | 上海公路桥梁（集团）有限公司 | Pipeline construction detecting system |
| CN108868859A (en) * | 2018-06-20 | 2018-11-23 | 中钢集团马鞍山矿山研究院有限公司 | A kind of mine skip shaft outgoing airflow shuts off partitioning system |
| CN110207307A (en) * | 2019-07-01 | 2019-09-06 | 兰州大学 | A kind of indoor intelligent ventilating system |
| CN111810212A (en) * | 2020-06-01 | 2020-10-23 | 上海市政工程设计研究总院（集团）有限公司 | Long-distance ventilation section of comprehensive pipe gallery and ventilation method thereof |
| CN112049675A (en) * | 2020-07-14 | 2020-12-08 | 中电建路桥集团有限公司 | Tunnel ventilation method |
| CN111894885A (en) * | 2020-08-01 | 2020-11-06 | 中国水利水电第七工程局有限公司 | Tunnel fan intelligent control system and control method |
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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: 20130313 Termination date: 20150724 |
|
| EXPY | Termination of patent right or utility model |