CN215675617U - Automatic air monitoring and adjusting system in closed construction space - Google Patents
Automatic air monitoring and adjusting system in closed construction space Download PDFInfo
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- CN215675617U CN215675617U CN202120985890.1U CN202120985890U CN215675617U CN 215675617 U CN215675617 U CN 215675617U CN 202120985890 U CN202120985890 U CN 202120985890U CN 215675617 U CN215675617 U CN 215675617U
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Abstract
The utility model discloses an automatic air monitoring and adjusting system in a closed construction space, which comprises an air monitoring system, an air adjusting system and a background monitoring system, wherein the air monitoring system is connected with the air adjusting system through a pipeline; the air monitoring system comprises a plurality of air monitoring devices distributed in the closed construction space; the air conditioning system comprises an air supply system and an air exhaust system; the background monitoring system comprises a data processing module, an alarm display module and a regulation and control module which are connected with each other through electric signals. The utility model has the beneficial effects that: the air data in the closed construction space is acquired in real time by arranging the plurality of air monitoring devices in the closed construction space, the background monitoring system sends a corresponding control instruction to the air conditioning system according to the air data in the closed construction space, the air conditioning system realizes the exchange of air inside and outside the closed construction space through air exhausting and conveying so as to improve the air quality, the construction safety of the closed construction space is ensured, and the air monitoring system is not influenced by construction and can be used in a circulating way.
Description
Technical Field
The utility model relates to the technical field of air purification in building construction, in particular to an automatic air monitoring and adjusting system in a closed construction space.
Background
Underground works reverse construction usually sets up round foundation ditch supporting construction in the foundation ditch periphery, and after basement outer wall construction, the horizontal bearing structure that parallels with the basement floor is located between basement outer wall and the foundation ditch supporting construction, forms airtight construction space between basement outer wall and the foundation ditch supporting construction. In the engineering construction process, safety accidents caused by construction operation in the closed construction space are endless, and because the air components and the air content are difficult to judge by naked eyes, how to monitor the air components in the closed construction space and dynamically regulate and control the air quality to ensure the construction safety of the closed construction space is always a main problem which troubles the construction safety of the underground engineering. At present, the conventional treatment mode is that an axial flow fan is directly adopted to exchange air inside and outside a closed construction space, but actually, along with the progress of engineering construction, the air composition and content in the closed construction space also change, and the conventional axial flow fan is adopted to supply air, so that the potential safety hazard is difficult to effectively eliminate.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the problem that the air in the closed construction space is inconvenient to automatically monitor and regulate, and provides an automatic air monitoring and regulating system in the closed construction space, which comprises an air monitoring system, an air regulating system and a background monitoring system;
the air monitoring system comprises a plurality of air monitoring devices which are distributed in the closed construction space in a discrete mode; the air monitoring device comprises an oxygen content detector and a toxic and harmful gas detector;
the air conditioning system comprises an air supply system and an air exhaust system; the air supply system comprises an air supply fan and an air supply pipe; an air outlet of the air supply fan is communicated with one end of the air supply pipe, and the other end of the air supply pipe is arranged in the closed construction space; the exhaust system comprises an exhaust fan and an exhaust pipe; an air inlet of the exhaust fan is communicated with one end of the exhaust pipe, and the other end of the exhaust pipe is arranged in the closed construction space; the air inlet of the air supply fan and the air outlet of the air exhaust fan are both positioned outside the closed construction space;
the background monitoring system comprises a data processing module, an alarm display module and a regulation and control module which are connected with each other through electric signals; the data processing module is in electrical signal connection with the oxygen content detector and the toxic and harmful gas detector; the regulation and control module is connected with the exhaust fan and the air supply fan through electric signals.
Furthermore, the air inlet of the air supply fan and the air inlet of the air exhaust fan are respectively provided with a filter screen. The filter screen can prevent foreign matters such as leaves, mice and the like from entering the air conditioning system.
Furthermore, an air filter is arranged at an air inlet of the air supply fan. The air filter can ensure that the air sent into the closed construction space by the air supply fan is clean air, and the internal air exchange quality is improved.
Further, an umbrella-shaped cover is arranged at one end of the air supply pipe, which is far away from the air supply fan; and the distance between the lower end of the umbrella-shaped cover and the bottom of the closed construction space is less than or equal to 1.5 meters. The umbrella-shaped cover can limit the flow direction of the air flow at the outlet of the blast pipe, avoid the influence of the air flow on construction, reduce dust emission and ensure the monitoring accuracy of a construction environment and an air monitoring system.
Furthermore, the air supply pipe and the exhaust pipe are respectively provided with a plurality of pipes.
Furthermore, the number of the toxic and harmful gas detectors and the number of the oxygen content detectors in the same closed construction space are at least three, and the detectors are all located at different heights. The plurality of toxic and harmful gas detectors and the oxygen content detector which are arranged at different heights can further improve the accuracy of monitoring data, and avoid that different gases affect the monitoring result due to different distribution heights.
Further, the closed construction space is a space between the foundation pit supporting structure and the basement outer wall; the toxic and harmful gas detector and the oxygen content detector are arranged on the foundation pit supporting structure and the opposite wall of the basement outer wall.
Furthermore, one end of the air supply pipe, which is far away from the air supply fan, and one end of the exhaust pipe, which is far away from the exhaust fan, are respectively positioned at the oblique opposite angles in the closed construction space. The air exchange efficiency in the closed construction space can be improved by arranging the oblique opposite angles.
The utility model has the beneficial effects that: the air data in the closed construction space is acquired in real time by arranging the plurality of air monitoring devices in the closed construction space, the background monitoring system sends a corresponding control instruction to the air conditioning system according to the air data in the closed construction space, the air conditioning system realizes the exchange of air inside and outside the closed construction space through air exhausting and conveying so as to improve the air quality, the construction safety of the closed construction space is ensured, and the air monitoring system is not influenced by construction and can be used in a circulating way.
Drawings
Fig. 1 is a schematic structural view of the automatic air monitoring and adjusting system in the closed construction space according to the present invention.
Fig. 2 is a side view of the structure of fig. 1.
In the figure, 1-a closed construction space; 2, a foundation pit supporting structure; 3-basement exterior wall; 4-a horizontal support structure; 5-basement floor slab; 6-an air monitoring device; 7-an air filter; 8-air supply fan; 9-blast pipe; 10-umbrella-shaped cover; 11-an exhaust fan; 12-an exhaust pipe; 13-a filter screen.
Detailed Description
The utility model is described in further detail below with reference to the figures and specific embodiments.
As shown in fig. 1 and 2, an automatic air monitoring and adjusting system in a closed construction space includes an air monitoring system, an air adjusting system and a background monitoring system; the closed construction space 1 in this embodiment is a space between the foundation pit supporting structure 2 and the basement outer wall 3, and of course, the closed construction space 1 includes, but is not limited to, the space between the foundation pit supporting structure 2 and the basement outer wall 3, and may also be a fully closed or semi-closed space in other construction projects.
The air monitoring system comprises a plurality of air monitoring devices 6 which are discretely distributed in the closed construction space 1; the air monitoring device 6 comprises an oxygen content detector and a toxic and harmful gas detector.
The air conditioning system comprises an air supply system and an air exhaust system; the air supply system comprises an air supply fan 8 and an air supply pipe 9; an air outlet of the air supply fan 8 is communicated with one end of an air supply pipe 9, and the other end of the air supply pipe 9 is arranged in the closed construction space 1; the exhaust system comprises an exhaust fan 11 and an exhaust pipe 12; an air inlet of the exhaust fan 11 is communicated with one end of an exhaust pipe 12, and the other end of the exhaust pipe 12 is arranged in the closed construction space 1; the air inlet of the air supply fan 8 and the air outlet of the air exhaust fan 11 are both positioned outside the closed construction space 1.
The background monitoring system comprises a data processing module, an alarm display module and a regulation and control module which are connected with each other through electric signals; the data processing module is in electrical signal connection with the oxygen content detector and the toxic and harmful gas detector; the regulation and control module is connected with the electric signals of the exhaust fan 11 and the air supply fan 8.
In order to prevent foreign matters such as leaves and mice from entering the air conditioning system, the air inlet of the air supply fan 8 and the air inlet of the air exhaust fan 11 are respectively provided with a filter screen 13. The air inlet of the air supply fan 8 can be also provided with an air filter 7 to ensure that the air entering the closed construction space 1 is high-quality pollution-free air, so that the toxic and harmful gases in the closed construction space 1 can be diluted, and the percentage of the toxic and harmful gases in the closed construction space 1 can be quickly reduced. The oxygen content detector, the toxic and harmful gas detector, the air filter 7, the exhaust fan 11 and the air supply fan 8 in the embodiment can be finished products in the existing market.
As shown in fig. 1, an umbrella-shaped cover 10 is arranged at one end of the blast pipe 9 far away from the blast fan 8; the distance between the lower end of the umbrella-shaped cover 10 and the bottom of the closed construction space 1 is less than or equal to 1.5 m. A horizontal breathable sponge plate can be arranged in the umbrella-shaped cover 10 to slow down the flow velocity of air flow and prevent the dust in the closed construction space 1 from reversely flowing into the air supply pipe 9.
The air supply pipes 9 and the exhaust pipes 12 may be respectively provided in plural according to the size of the enclosed construction space 1, the lengths of the air supply pipes 9 and the exhaust pipes 12 may be adjusted, and the air supply pipes 9 and the exhaust pipes 12 are preferably corrugated hoses with adjustable lengths. In order to achieve better gas exchange efficiency in the enclosed construction space 1, as shown in fig. 1, one end of the blast pipe 9 away from the blast fan 8 and one end of the exhaust pipe 12 away from the exhaust fan 11 are respectively located at diagonal angles in the enclosed construction space 1.
The number of the toxic and harmful gas detectors and the number of the oxygen content detectors in the same closed construction space 1 are at least three, and the detectors are all located at different heights. The poisonous and harmful gas detector and the oxygen content detector in the embodiment are arranged on the opposite walls of the foundation pit supporting structure 2 and the basement outer wall 3. Of course, the toxic and harmful gas detector and the oxygen content detector can also be directly arranged in different areas and different heights in the closed construction space 1 through the bracket.
During specific construction, the establishment of the air monitoring system can comprise the following steps:
The establishment of the air conditioning system mainly comprises the selection of the type of the air supply fan 8 and the air exhaust fan 11, and the arrangement of the air supply pipe and the air exhaust pipe, wherein the air supply pipe and the air exhaust pipe can be respectively provided with a plurality of pipes which are connected through a bent pipe so as to improve the circulation efficiency of the air in the closed construction space 1. The number of the air supply fans 8 and the number of the air exhaust fans 11 can be respectively multiple, and in the embodiment, the air volume of each air supply fan 8 or each air exhaust fan 11 is 20000m3/h。
The background monitoring system comprises a data processing module, an alarm display module and a regulation and control module which are connected with each other through electric signals; the data processing module is in electrical signal connection with the oxygen content detector and the toxic and harmful gas detector; the regulation and control module is connected with the electric signals of the exhaust fan 11 and the air supply fan 8.
The background monitoring system actually comprises a hardware configuration and a software system; the hardware configuration mainly includes a database server (i.e., a data processing module), a client computer and a switch which are connected by a network.
The database server is in electric signal connection with the oxygen content detector and the toxic and harmful gas detector and is used for acquiring air quality data (oxygen content data detected by the oxygen content detector and toxic and harmful gas content data detected by the toxic and harmful gas detector) in real time. Specifically, the database server includes: the system comprises a processor, a CPU bracket, a register type low-voltage memory, an intelligent array controller, a network adapter and a large-memory-capacity data hard disk.
The built-in software system of the database server comprises a basic information base and a monitoring database.
Basic information base: the method comprises the steps of spatial distribution position information of an air monitoring device 6 in the closed construction space 1, the name attribute of instrument equipment (comprising the air monitoring device 6, an air supply fan 8 and an air exhaust fan 11), and a handling method of an emergency (adopting the conventional handling method).
Monitoring a database: including real-time data and historical data detected by each air monitoring device 6, and is associated with the corresponding position information of the air monitoring device 6, so as to facilitate the query and tracing of the data.
The client computer comprises a display, a host and an operation panel (or a keyboard and a mouse); specifically, the method comprises the following steps: at least 4GB independent video memory, 640G hard disk, DVD recording, gigabit network card and 1G DDR5 video memory configuration, win7 and above operating system. The software system of the client computer comprises an alarm data system and an air quality evaluation model.
An alarm data system: setting an early warning threshold value and recording an alarm record according to the environment background and relevant standards. The specific early warning threshold value can be correspondingly processed according to the occupational contact limit value of the factor to be monitored during the operation of the underground closed construction space 1.
Air quality evaluation model: and (3) scientifically calculating and evaluating the air quality according to the air quality data uploaded by the database server in real time and by combining occupational contact limit values of all factors (oxygen and toxic and harmful gases).
The alarm display module and the regulation and control module are formed by combining hardware configuration of a client computer and a built-in software system thereof. And the alarm display module displays the air quality result evaluated by the air quality evaluation model in real time through a display. For example, when the content of each factor is far from the early warning threshold, the name corresponding to each factor on the display is displayed as green; when the content of a certain factor is about to reach an early warning threshold value, the name of the factor on the display is displayed as yellow; when the content of a certain factor exceeds the early warning threshold value, the name of the factor on the display is displayed in red.
And meanwhile, the regulation and control module sends a regulation and control instruction to the air conditioning system according to the air quality result evaluated by the air quality evaluation model. For example, when the oxygen content exceeds the early warning threshold (that is, the oxygen content does not reach the standard), the name of "oxygen" on the display is displayed in red, meanwhile, the regulation and control module controls the air supply fan 8 to start, fresh air outside the closed construction space 1 is sent into the closed construction space 1, so that the oxygen content reaches the standard, and when the oxygen content reaches the standard and the name of "oxygen" on the display is displayed in green, the regulation and control module controls the air supply fan 8 to stop. For another example, when the content of hydrogen sulfide exceeds the early warning threshold (i.e., the content of hydrogen sulfide exceeds the standard), the name of hydrogen sulfide is red, the regulation and control module controls the air supply fan 8 and the air exhaust fan 11 to be started, fresh air outside the closed construction space 1 is sent into the closed construction space 1, air with the content of hydrogen sulfide exceeding the standard in the closed construction space 1 is exhausted outside the closed construction space 1, the air exchange between the inside and the outside of the closed construction space 1 is realized, and when the content of hydrogen sulfide reaches the standard, the name of hydrogen sulfide on the display is green, and the regulation and control module controls the air supply fan 8 and the air exhaust fan 11 to stop.
The switch: the switching capacity is larger than or equal to 165G, the forwarding performance is larger than or equal to 65Mpps, dual-power input is supported, the number of expandable slots is larger than or equal to 2, the number of gigabit interfaces is larger than or equal to 2, a KMAC address table is larger than or equal to 16, VLAN based on ports is supported, VLAN based on MAC is supported, 802.1qVlan encapsulation is supported, the maximum number of Vlan is larger than or equal to 4000, QinQ, GVRP and Voice VLAN are supported, and a network access certificate of a department of trust is provided.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the utility model may be made by those skilled in the art without departing from the principle of the utility model.
Claims (8)
1. The utility model provides an air automatic monitoring governing system in airtight construction space which characterized in that: the system comprises an air monitoring system, an air conditioning system and a background monitoring system;
the air monitoring system comprises a plurality of air monitoring devices which are distributed in the closed construction space in a discrete mode; the air monitoring device comprises an oxygen content detector and a toxic and harmful gas detector;
the air conditioning system comprises an air supply system and an air exhaust system; the air supply system comprises an air supply fan and an air supply pipe; an air outlet of the air supply fan is communicated with one end of the air supply pipe, and the other end of the air supply pipe is arranged in the closed construction space; the exhaust system comprises an exhaust fan and an exhaust pipe; an air inlet of the exhaust fan is communicated with one end of the exhaust pipe, and the other end of the exhaust pipe is arranged in the closed construction space; the air inlet of the air supply fan and the air outlet of the air exhaust fan are both positioned outside the closed construction space;
the background monitoring system comprises a data processing module, an alarm display module and a regulation and control module which are connected with each other through electric signals; the data processing module is in electrical signal connection with the oxygen content detector and the toxic and harmful gas detector; the regulation and control module is connected with the exhaust fan and the air supply fan through electric signals.
2. The automatic air monitoring and adjusting system in the closed construction space as claimed in claim 1, wherein: and the air inlet of the air supply fan and the air inlet of the air exhaust fan are respectively provided with a filter screen.
3. The automatic air monitoring and adjusting system in the closed construction space as claimed in claim 2, wherein: and an air filter is also arranged at the air inlet of the air supply fan.
4. The automatic air monitoring and adjusting system in the closed construction space as claimed in claim 1, wherein: an umbrella-shaped cover is arranged at one end of the air supply pipe, which is far away from the air supply fan; and the distance between the lower end of the umbrella-shaped cover and the bottom of the closed construction space is less than or equal to 1.5 meters.
5. The automatic air monitoring and adjusting system in the closed construction space as claimed in claim 1, wherein: the air supply pipe and the exhaust pipe are respectively provided with a plurality of pipes.
6. The automatic air monitoring and adjusting system in the closed construction space as claimed in claim 1, wherein: the toxic and harmful gas detector and the oxygen content detector in the same closed construction space are respectively provided with at least three detectors which are positioned at different heights.
7. The automatic air monitoring and adjusting system in the closed construction space as claimed in claim 6, wherein: the closed construction space is a space between the foundation pit supporting structure and the basement outer wall; the toxic and harmful gas detector and the oxygen content detector are arranged on the foundation pit supporting structure and the opposite wall of the basement outer wall.
8. The automatic air monitoring and adjusting system in the closed construction space as claimed in claim 1, wherein: and one end of the air supply pipe, which is far away from the air supply fan, and one end of the exhaust pipe, which is far away from the exhaust fan, are respectively positioned at the oblique opposite angles in the closed construction space.
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| CN202120985890.1U CN215675617U (en) | 2021-05-10 | 2021-05-10 | Automatic air monitoring and adjusting system in closed construction space |
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| CN202120985890.1U CN215675617U (en) | 2021-05-10 | 2021-05-10 | Automatic air monitoring and adjusting system in closed construction space |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114985107A (en) * | 2022-05-23 | 2022-09-02 | 西安西矿环保科技有限公司 | Heat preservation box purging device, purging method thereof and electric dust collector |
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2021
- 2021-05-10 CN CN202120985890.1U patent/CN215675617U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114985107A (en) * | 2022-05-23 | 2022-09-02 | 西安西矿环保科技有限公司 | Heat preservation box purging device, purging method thereof and electric dust collector |
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