CN214536677U - Toxin filtering and ventilation monitoring system - Google Patents
Toxin filtering and ventilation monitoring system Download PDFInfo
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- CN214536677U CN214536677U CN202120329775.9U CN202120329775U CN214536677U CN 214536677 U CN214536677 U CN 214536677U CN 202120329775 U CN202120329775 U CN 202120329775U CN 214536677 U CN214536677 U CN 214536677U
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Abstract
The utility model belongs to the technical field of the people's air defense ventilation and specifically relates to a strain poison ventilation monitored control system is related to, and it includes control module, amount of wind measuring device and first electrical control valve, control module is used for connecting with air supply module electricity, control module with the amount of wind measuring device electricity is connected, control module with first electrical control valve electricity is connected, first electrical control valve with amount of wind measuring device is used for installing on the second pipeline, amount of wind measuring device is located one side that first electrical control valve is close to air supply module, and amount of wind measuring device is used for detecting the amount of wind of second pipeline, control module is used for receiving amount of wind measuring device's measured data in order to adjust first electrical control valve's aperture and air supply module's air supply volume. The method and the device have the effects of improving the automation degree of the system and reducing the dependence degree on workers.
Description
Technical Field
The application relates to the field of civil air defense ventilation, in particular to a toxicity filtering ventilation monitoring system.
Background
The civil air defense engineering is a public safety building constructed for coping with special environments such as wartime, disaster and the like, the system is complex and has a strict structure, and the special environments in wartime and disaster need to be fully considered during design and construction, so that a special ventilation system is required.
According to the specification, the toxin filtering ventilation has the lowest air intake standard, and the cultivation is carried out at 2 m/h by taking the masking of second-class personnel as an example. But the actual air intake of the filtered poison must not exceed the rated air volume of the filter absorber, otherwise the outdoor poison gas will permeate into the room through the filter absorber. For example, in a second-class personnel shelter, 1000 people are sheltered, 3 filtration absorbers are adopted, the rated air volume of the filtration absorbers is 1000m for cultivation/h, and the filtration ventilation volume of the filtration absorbers needs to be controlled within the range of 2000-3000 m for cultivation/h.
Referring to fig. 1, a toxicity filtering ventilation system in the related art generally includes a toxicity filtering module and an air supply module, the toxicity filtering module includes at least one filter absorber 1, the toxicity filtering module is installed in a toxicity filtering chamber (i.e., a toxicity contaminated area), air in a diffusion chamber enters the toxicity filtering chamber through a first pipeline 2 and is filtered by an oil screen dust filter 4 to remove coarse particles, then the toxicity is filtered through the filter absorber 1, the air is conveyed to an indoor (i.e., a clean area) through an air supply module after passing through a second pipeline 3, in the related art, a manual regulating valve 5 and an air quantity measuring device 6 are often installed on the second pipeline 3, an air quantity of the toxicity filtering ventilation system is measured through the air quantity measuring device 6 during initial debugging, and then the opening of the manual regulating valve 5 is regulated, so that the air quantity of the toxicity filtering ventilation system meets the lowest air quantity and does not exceed the rated air quantity of the filter absorber 1.
With respect to the related art in the above, the inventors consider that: after the initial debugging of the toxicity filtering and ventilating system is finished, the toxicity filtering and ventilating system is put into use for a period of time, along with the increase of dust accumulation, the resistance of an oil screen dust filter is larger and larger, the resistance of a filter absorber is also larger and larger, so that the air intake of the toxicity filter is smaller and smaller, the requirement of minimum toxicity filtering air volume is ensured, the toxicity infiltration phenomenon is avoided, the operation requirement on workers is higher, the workload is large, the equipment is difficult to prepare in wartime, and the improvement is needed.
SUMMERY OF THE UTILITY MODEL
In order to improve system degree of automation, reduce the degree of dependence to the staff, this application provides a toxicity filtering ventilation monitored control system.
The application provides a strain toxin ventilation monitored control system adopts following technical scheme:
the utility model provides a strain poison ventilation monitored control system, includes control module, amount of wind measuring device and first electrical control valve, control module is used for connecting with air supply module electricity, control module with amount of wind measuring device electricity is connected, control module with first electrical control valve electricity is connected, first electrical control valve with amount of wind measuring device is used for installing on the second pipeline, amount of wind measuring device is located one side that first electrical control valve is close to air supply module, and amount of wind measuring device is used for detecting the amount of wind of second pipeline, control module is used for receiving amount of wind measuring device's measured data in order to adjust the aperture of first electrical control valve and the amount of wind of air supply module.
By adopting the technical scheme, the air quantity measuring device detects the air quantity in the second pipeline in real time, namely the air intake of the filtered toxin, and when the air quantity measuring device detects that the air intake of the filtered toxin in the second pipeline is greater than the rated maximum air intake of the filtered toxin, the control module reduces the opening of the first electric regulating valve and reduces the air output of the air supply module; when the air volume measuring device detects that the air intake volume for filtering the poison in the second pipeline is less than the rated minimum air intake volume for filtering the poison, the control module opens the opening of the first electric regulating valve and simultaneously increases the air supply volume of the air supply module; therefore, the automation degree of the system is improved, and the dependence degree on workers is reduced.
Optionally, the air quantity measuring device further comprises an air return pipe, one end of the air return pipe is used for being connected with a second pipeline, the other end of the air return pipe is used for being communicated with the indoor space, the air return pipe is located at the position where the second pipeline is connected with one side, close to the air supply module, of the air quantity measuring device, a second electric adjusting valve is arranged on the air return pipe, the control module is electrically connected with the second electric adjusting valve, and the control module is used for controlling the opening degree of the first electric adjusting valve.
By adopting the technical scheme, during initial debugging, the opening degrees of the first electric regulating valve and the second electric regulating valve are adjusted to be maximum, when the air volume measuring device measures that the air intake volume of the filtered air in the second pipeline is smaller than the rated minimum air intake volume of the filtered air, the control module automatically closes the opening degree of the second electric regulating valve, the air which is conveyed to the room again by the air supply module through the return air pipe is reduced, the pressure in the second pipeline is increased, the extraction rate is increased, and the air intake volume of the filtered air is increased; when the air volume measuring device detects that the air intake of the filtered air in the second pipeline is larger than the rated maximum air intake of the filtered air, the control module automatically closes the opening of the first electric regulating valve until the air intake of the filtered air in the second pipeline is not larger than the rated maximum air intake of the filtered air, the pressure in the return air pipe is increased, and the air which is delivered to the room again by the air supply module through the return air pipe is increased; in the use process, the resistance of the oil screen dust filter is increasingly larger, the resistance of the filter absorber is also increasingly larger, the control module controls the opening of the second electric regulating valve to be smaller and the opening of the first electric regulating valve to be larger, so that the air inlet volume for filtering the poison in the second pipeline can be continuously kept between the rated minimum air inlet volume for filtering the poison and the rated maximum air inlet volume for filtering the poison, and meanwhile, the arrangement ensures that the air supply volume of the air supply module can be kept constant.
Optionally, still include poison detector and first airtight valve, poison detector and first airtight valve are used for setting up on the second pipeline, the poison detector is located between toxin filtering module and the first electrical control valve, poison detector, first airtight valve with the control module electricity is connected, first airtight valve is used for control the second pipeline is opened and close.
Through adopting above-mentioned technical scheme, the poison gas content in the second pipeline of poison agent detector real-time detection, when poison gas content exceeds standard, control module control first airtight valve is closed to prevent that the air that poison gas content exceeds standard is carried to indoor by the fan.
Optionally, the first airtight valve is arranged on one side of the toxin agent detector close to the first electric control valve.
Through adopting above-mentioned technical scheme, first airtight valve setting is close to one side of first electrical control valve at the poison agent detector, and when the poison agent detector detected the poison gas content in the second pipeline and exceeded standard, control module controlled first airtight valve immediately and closed to can avoid the air diffusion that the less part poison gas content exceeds standard to first electrical control valve department.
Optionally, the filter absorber further comprises a first differential pressure sensor, the first differential pressure sensor is used for detecting the air pressure difference between two ends of the filter absorber, and the first differential pressure sensor is electrically connected with the control module.
Through adopting above-mentioned technical scheme, the atmospheric pressure difference at first differential pressure sensor real-time detection filter absorber both ends, when detecting that pressure differential reaches filter absorber's final resistance, control module sends alarm information and controls all airtight valves and fan and close.
Optionally, the oil screen dust filter further comprises a second differential pressure sensor, the second differential pressure sensor is used for detecting the air pressure difference between two ends of the oil screen dust filter, and the second differential pressure sensor is electrically connected with the control module.
By adopting the technical scheme, the second differential pressure sensor detects the air pressure difference at the two ends of the filter absorber in real time, and when the detected pressure difference reaches the final resistance of the oil screen dust filter, the control module sends alarm information and controls all the closed valves and the fans to be closed.
Optionally, the device further comprises a second airtight valve, and the second airtight valve is arranged between the oil screen dust filter and the toxicity filtering module.
By adopting the technical scheme, whether the second sealed valve is opened or closed to communicate the toxin filtering module with the outside is realized, and the tightness of the toxin filtering ventilation system is enhanced when the toxin filtering ventilation system is closed.
Optionally, when the filter absorber is provided in plurality, the first differential pressure sensors are provided in plurality, and the plurality of first differential pressure sensors detect the air pressure difference at two ends of the plurality of filter absorbers in a one-to-one correspondence manner.
Through adopting above-mentioned technical scheme, when the absorber filter sets up to a plurality of, can appear between a plurality of absorbers because of the unbalanced condition that leads to the amount of wind difference and the resistance is different between a plurality of absorbers of water conservancy, consequently set up a plurality of first differential pressure sensor and detect a plurality of absorbers with the one-to-one, can detect out the pressure differential at single absorber filter both ends in real time to improve and detect the precision, avoid the too high condition emergence of control module unresponsive at the pressure differential at single absorber filter both ends.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the air quantity measuring device detects the air quantity in the second pipeline in real time, namely the air inlet quantity of the filtered air, and when the air quantity measuring device detects that the air inlet quantity of the filtered air in the second pipeline is larger than the rated maximum air inlet quantity of the filtered air, the control module reduces the opening of the first electric regulating valve and reduces the air supply quantity of the air supply module; when the air volume measuring device detects that the air intake volume for filtering the poison in the second pipeline is less than the rated minimum air intake volume for filtering the poison, the control module opens the opening of the first electric regulating valve and simultaneously increases the air supply volume of the air supply module; therefore, the automation degree of the system is improved, and the dependence degree on workers is reduced;
2. when the air quantity measuring device measures that the air inlet quantity of the filtered air in the second pipeline is smaller than the rated minimum air inlet quantity of the filtered air, the control module automatically closes the opening of the second electric regulating valve, the air that indoor clean air is conveyed to the indoor again through the return air pipe by the air supply module is reduced, the pressure in the second pipeline is increased, the extraction speed is increased, and the air inlet quantity of the filtered air is increased; when the air volume measuring device detects that the air intake of the filtered air in the second pipeline is larger than the rated maximum air intake of the filtered air, the control module automatically closes the opening of the first electric regulating valve until the air intake of the filtered air in the second pipeline is not larger than the rated maximum air intake of the filtered air, the pressure in the return air pipe is increased, and the air which is delivered to the room again by the air supply module through the return air pipe is increased; in the using process, the resistance of the oil screen dust filter is increasingly larger, the resistance of the filter absorber is also increasingly larger, the control module controls the opening of the second electric regulating valve to be smaller and the opening of the first electric regulating valve to be larger, so that the air inlet volume for filtering the poison in the second pipeline can be continuously kept between the rated minimum air inlet volume for filtering the poison and the rated maximum air inlet volume for filtering the poison, and meanwhile, the arrangement ensures that the air supply volume of the air supply module can be kept constant;
3. the poison detector detects the poison gas content in the second pipeline in real time, and when the poison gas content exceeds the standard, the control module controls the first airtight valve to be closed, so that air with the poison gas content exceeding the standard is prevented from being conveyed to the indoor space by the fan.
Drawings
Fig. 1 is a schematic view of a construction of a poison-filtering ventilation system in the related art.
FIG. 2 is a schematic view of an installation structure of the canister ventilation system according to the embodiment of the present application.
Description of reference numerals: 1. a filtration absorber; 2. a first conduit; 3. a second conduit; 4. an oil screen dust filter; 5. a manual regulating valve; 6. an air volume measuring device; 7. a control module; 9. a return air duct; 10. a toxic agent detector; 11. a first electric control valve; 12. a second electric control valve; 13. a first differential pressure sensor; 14. a second differential pressure sensor; 15. a first airtight valve; 16. a second airtight valve; 17. a ventilation plug; 18. a first connecting pipe; 19. a second connecting pipe; 20. a fan.
Detailed Description
The present application is described in further detail below with reference to figures 1-2.
The embodiment of the application discloses a poison filtering ventilation monitoring system, referring to fig. 2, the poison filtering ventilation monitoring system is arranged in a poison filtering ventilation system, toxin filtering ventilation monitoring system includes control module 7, amount of wind measuring device 6, return air pipe 9, toxin agent detector 10, first electrical control valve 11, second electrical control valve 12, first differential pressure sensor 13, second differential pressure sensor 14, first airtight valve 15, second airtight valve 16, control module 7 is the controller, control module 7 and wind measuring device 6, return air pipe 9, toxin agent detector 10, first electrical control valve 11, second electrical control valve 12, first differential pressure sensor 13, second differential pressure sensor 14, first airtight valve 15, the equal electricity of second airtight valve 16 is connected, it is concrete, the electricity here is connected can be through the connection of electric lines, or adopt RS485 communication mode etc. to realize wireless communication and connect.
The poison filtering and ventilating system comprises a poison filtering module and an air supply module, when in actual installation, the poison filtering module is installed in a poison filtering chamber (namely a poison pollution area), the air supply module is installed indoors (namely a clean area) or in an air inlet machine chamber, the poison filtering module comprises at least one filtering absorber 1, an air inlet end of the filtering absorber 1 is communicated with a diffusion chamber through a first pipeline 2, the diffusion chamber is communicated with an air inlet vertical shaft, an explosion-proof valve is installed between the diffusion chamber and the air inlet vertical shaft, the air inlet vertical shaft is communicated with the outside, an oil mesh dust filter 4 is installed on the first pipeline 2, the oil mesh dust filter 4 is used for filtering coarse particles of air entering the poison filtering module, two pressure interfaces of a second differential pressure sensor 14 are respectively connected to the first pipelines 2 at two ends of the oil mesh dust filter 4, so as to realize real-time detection of the air pressure difference at two ends of the filtering absorber 1, when the second differential pressure sensor 14 detects that the pressure difference at two ends of the oil mesh dust filter 4 reaches the final resistance of the oil mesh dust filter 4, the control module 7 sends out alarm information and controls all the closed valves and the fan 20 to be closed, wherein the final resistance refers to the resistance when the filter is scrapped; the second airtight valve 16 is installed on the first pipeline 2, the second airtight valve 16 is located on one side, close to the filtering absorber 1, of the oil screen dust filter 4, and the control module 7 controls the opening and closing of the second airtight valve 16 to achieve whether the toxin filtering module is communicated with the outside or not. In addition, the first pipeline 2 is provided with a ventilation plug 17, the ventilation plug 17 is positioned between the second airtight valve 16 and the filter absorber 1, the ventilation plug 17 is opened and closed to realize the communication between the first pipeline 2 and the toxicity filtering chamber, and after the filter absorber 1 is replaced, the ventilation plug 17 is opened, so that the toxicity filtering of the air in the toxicity filtering chamber can be realized.
The air outlet end of the filter absorber 1 is communicated with the air supply module through a second pipeline 3, and two pressure interfaces of a first differential pressure sensor 13 are respectively connected to a first pipeline 2 and a second pipeline 3 at two ends of the filter absorber 1 so as to detect the air pressure difference at two ends of the filter absorber 1 in real time; when the filter absorber 1 sets up to more than two, the air inlet end of a plurality of filter absorber 1 all links to each other through first connecting pipe 18 and first pipeline 2, the air-out end links to each other through all connecting pipe 19 and second pipeline 3, the quantity that first differential pressure sensor 13 corresponds filter absorber 1 sets up to a plurality of, two pressure interface of a first differential pressure sensor 13 connect respectively on first connecting pipe 18 and the second connecting pipe 19 at a filter absorber 1 both ends, thereby realize that a plurality of first differential pressure sensor 13 one-to-one detects a plurality of filter absorber 1. The air supply module comprises a fan 20, the fan 20 is electrically connected with the control module 7, the fan 20 is installed indoors or installed indoors on the air inlet machine 20, the air inlet end of the fan 20 is communicated with the air outlet end of the second pipeline 3, and the air outlet end of the fan 20 is communicated with the indoor.
The toxin agent detector 10, the first airtight valve 15, the first electric control valve 11, the second electric control valve 12, the air volume measuring device 6, and the air return pipe 9 are all installed on the second pipeline 3, in this embodiment, the installation positions of the toxin agent detector 10, the first airtight valve 15, the first electric control valve 11, the air volume measuring device 6, and the air return pipe 9 on the second pipeline 3 are sequentially from the filter absorber 1 toward the fan 20: the device comprises a toxin agent detector 10, a first closed valve 15, a first electric regulating valve 11, an air quantity measuring device 6 and a return air pipe 9, wherein one end of the return air pipe 9 is used for being connected with a second pipeline 3, the other end of the return air pipe is used for being communicated with the indoor space, the second electric regulating valve 12 is installed on the return air pipe 9, a control module 7 controls the opening and closing of the first closed valve 15 to control the opening and closing of the second pipeline 3, the toxin agent detector 10 detects the content of toxic gas in the second pipeline 3 in real time, and when the content of the toxic gas exceeds the standard, the control module 7 controls the first closed valve 15 to be closed, so that air with the content of the toxic gas exceeding the standard is prevented from being conveyed to the indoor space by a fan 20; the air quantity measuring device 6 detects the air quantity of the second pipeline 3 in real time, the control module 7 controls the flow of the second pipeline 3 by controlling the opening degree of the first electric regulating valve 11, and controls the flow of the return air pipe 9 by controlling the opening degree of the second electric regulating valve 12.
The implementation principle of the toxicity filtering and ventilation monitoring system in the embodiment of the application is as follows: during initial debugging, the opening degrees of the first electric regulating valve 11 and the second electric regulating valve 12 are adjusted to be the maximum, when the air volume measuring device 6 measures that the air intake volume of the filtered air in the second pipeline 3 is smaller than the rated minimum air intake volume of the filtered air, the control module 7 automatically closes the opening degree of the second electric regulating valve 12, the air which is conveyed to the room again by the air supply module through the return air pipe 9 is reduced, the pressure in the second pipeline 3 is increased, the extraction rate is increased, and the air intake volume of the filtered air is increased; when the air volume measuring device 6 measures that the air volume of the filtered air in the second pipeline 3 is larger than the rated maximum air volume of the filtered air, the control module 7 automatically closes the opening of the first electric regulating valve 11 until the air volume of the filtered air in the second pipeline 3 is not larger than the rated maximum air volume of the filtered air, at the moment, the pressure in the return air pipe 9 is increased, and then the indoor clean air is re-conveyed to the indoor space by the air supply module through the return air pipe 9 to increase. In the using process, the resistance of the oil screen dust filter 4 is increasingly larger, the resistance of the filter absorber 1 is increasingly larger, the control module 7 controls the opening of the second electric regulating valve 12 to be smaller and the opening of the first electric regulating valve 11 to be larger, so that the air inlet amount of the filtered air in the second pipeline 3 can be continuously kept between the rated minimum air inlet amount of the filtered air and the rated maximum air inlet amount of the filtered air, the air supply amount of the air supply module can be kept constant, meanwhile, the toxic gas detector 10 detects the toxic gas content in the second pipeline 3 in real time, when the toxic gas content exceeds the standard, the control module 7 controls all the closed valves and the fan 20 to be closed, so that the air with the toxic gas content exceeding the standard is prevented from being conveyed to the indoor by the fan 20, the first pressure difference sensor 13 and the second pressure difference sensor 14 can detect the pressure difference between the two ends of the filter absorber 1 and the oil screen dust filter 4 in real time, and when the final resistance is reached, the control module 7 sends alarm information and controls all the closed valves and the fan 20 to be closed.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. A toxin filtering and ventilation monitoring system is characterized by comprising a control module (7), an air quantity measuring device (6) and a first electric regulating valve (11), the control module (7) is electrically connected with the air supply module, the control module (7) is electrically connected with the air volume measuring device (6), the control module (7) is electrically connected with the first electric regulating valve (11), the first electric regulating valve (11) and the air volume measuring device (6) are used for being arranged on a second pipeline (3), the air volume measuring device (6) is positioned on one side of the first electric regulating valve (11) close to the air supply module, the air volume measuring device (6) is used for detecting the air volume of the second pipeline (3), the control module (7) is used for receiving the measurement data of the air volume measuring device (6) so as to adjust the opening of the first electric adjusting valve (11) and the air volume of the air supply module.
2. The toxicity-filtering ventilation monitoring system according to claim 1, further comprising a return air pipe (9), wherein one end of the return air pipe (9) is used for being connected with the second pipeline (3), the other end of the return air pipe is used for being communicated with the indoor space, a joint of the return air pipe (9) and the second pipeline (3) is located on one side, close to the air supply module, of the air volume measuring device (6), a second electric regulating valve (12) is arranged on the return air pipe (9), the control module (7) is electrically connected with the second electric regulating valve (12), and the control module (7) is used for controlling the opening degree of the first electric regulating valve (11).
3. The toxin filtering ventilation monitoring system according to claim 1, further comprising a toxin agent detector (10) and a first airtight valve (15), wherein the toxin agent detector (10) and the first airtight valve (15) are arranged on the second pipeline (3), the toxin agent detector (10) is located between the toxin filtering module and the first electric control valve (11), the toxin agent detector (10), the first airtight valve (15) and the control module (7) are electrically connected, and the first airtight valve (15) is used for controlling the second pipeline (3) to be opened and closed.
4. A toxin filtering ventilation monitoring system according to claim 3 wherein said first airtight valve (15) is disposed on a side of said toxin agent detector (10) adjacent to said first electrokinetic regulating valve (11).
5. A canister ventilation monitoring system according to claim 1, further comprising a first differential pressure sensor (13), said first differential pressure sensor (13) being adapted to detect the air pressure difference across the filter absorber (1), said first differential pressure sensor (13) being electrically connected to said control module (7).
6. A canister ventilation monitoring system according to claim 1, further comprising a second differential pressure sensor (14), said second differential pressure sensor (14) being adapted to detect the air pressure difference across the oil screen filter (4), said second differential pressure sensor (14) being electrically connected to said control module (7).
7. A detoxification ventilation monitoring system according to claim 1, further comprising a second airtight valve (16), said second airtight valve (16) being arranged between the oil screen dust filter (4) and the detoxification module.
8. A canister draft monitoring system according to claim 5, wherein when said filter absorber (1) is provided in plurality, said first pressure difference sensor (13) is provided in plurality, and said plurality of first pressure difference sensors (13) detect the pressure difference between both ends of said plurality of filter absorbers (1) in one-to-one correspondence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120329775.9U CN214536677U (en) | 2021-02-04 | 2021-02-04 | Toxin filtering and ventilation monitoring system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120329775.9U CN214536677U (en) | 2021-02-04 | 2021-02-04 | Toxin filtering and ventilation monitoring system |
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| Publication Number | Publication Date |
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| CN214536677U true CN214536677U (en) | 2021-10-29 |
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| CN202120329775.9U Active CN214536677U (en) | 2021-02-04 | 2021-02-04 | Toxin filtering and ventilation monitoring system |
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2021
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