CN204830359U - Pressure differential control system of positive control room - Google Patents
Pressure differential control system of positive control room Download PDFInfo
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- CN204830359U CN204830359U CN201520606826.2U CN201520606826U CN204830359U CN 204830359 U CN204830359 U CN 204830359U CN 201520606826 U CN201520606826 U CN 201520606826U CN 204830359 U CN204830359 U CN 204830359U
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Abstract
The utility model discloses a pressure differential control system of positive control room, this system include the air -conditioning box, the case of airing exhaust, supply -air outlet, first exhaust pipe, second exhaust pipe and blast pipe, this system still includes controller, sensor, first amount of wind control valve and second amount of wind control valve, the controller is connected with the case of airing exhaust, air -conditioning box, sensor, first amount of wind control valve and second amount of wind control valve electricity respectively, sensor settings is indoor at the positive control, first amount of wind control valve sets up on first exhaust pipe, second amount of wind control valve sets up on the second exhaust pipe. The aperture of first amount of wind control valve and second amount of wind control valve is controlled to this scheme copy control ware through the monitoring value of obtaining the sensor to realize the indoor pressure differential of the positive control effect of invariant all the time. Solve current positive control room internal -external differential pressure unstability, low, the easy influenced technical problem of test result of cleanliness factor well.
Description
Technical field
The utility model relates to draught head control system field, particularly relates to a kind of pressure reduction control system for positive control room.
Background technology
As shown in Figure 1, positive control room 100 is used to do positive control test and laboratory that some add bacterium test or detect, and operating personnel need to carry out control experiment at contrast in-house operation Biohazard Safety Equipment 200.Therefore, the pressure reduction of contrast indoor and outdoor must be constant, to ensure the humiture and the cleanliness factor that contrast indoor, room.But because the Area comparison of existing contrast room is little, based on the consideration of cost, the contrast exhaust duct of room and the exhaust duct of Biohazard Safety Equipment 200 all share an air exhaust box 310, by the unified waste gas taking the inside away of air exhaust box 310, make to maintain the circulation of air in positive control room 100 and Biohazard Safety Equipment 200.When Biohazard Safety Equipment 200 starts or stops; pressure on exhaust duct is corresponding can be increased or reduce; because Biohazard Safety Equipment 200 is only just opened when work; do not work and just close; so the frequent start-stop of Biohazard Safety Equipment 200 can cause the instability of the indoor pressure reduction in contrast room, thus the impact contrast cleanliness factor of room and the result of test.
Therefore, the existing pressure reduction control system technology for positive control room requires further improvement and perfect.
Utility model content
The utility model the purpose of this utility model is, in order to overcome, existing positive control indoor and outdoor pressure reduction is unstable, cleanliness factor is low, the easy affected technical problem of result of the test, a kind of pressure reduction control system of positive control room is provided, this pressure reduction control system has and automatically regulates pressure reduction, make indoor and outdoor pressure reduction constant, the feature of high-cleanness, high in holding chamber.
The purpose of this utility model can reach by the following technical solutions:
A pressure reduction control system for positive control room, comprises air-conditioning box, air exhaust box, air outlet, first row airduct, second row airduct and ajutage; Wherein, described pressure reduction control system also comprises controller, sensor, the first volume control damper and the second volume control damper; Described controller is electrically connected with air exhaust box, air-conditioning box, sensor, the first volume control damper and the second volume control damper respectively; Described sensor setting is indoor at positive control, and described first volume control damper is arranged on first row airduct, and described second volume control damper is arranged on second row airduct.
The pressure reduction control system of described positive control room, wherein, described air exhaust box is by first row airduct and positive control room pipeline communication; Described air exhaust box is by second row airduct and Biohazard Safety Equipment pipeline communication; Described air-conditioning box is by ajutage and air outlet pipeline communication.
The pressure reduction control system of described positive control room, wherein, described controller is set to PLC.
The pressure reduction control system of described positive control room, wherein, described first volume control damper and the second volume control damper are all set to proportional integral volume control damper.
The pressure reduction control system of described positive control room, wherein, described sensor setting is differential pressure pickup.
Compared with present technology, the utility model has the advantage of: the utility model adds pressure reduction control system in the original air-supply air draft in the positive control room circulatory system, controller controls the aperture of the first volume control damper and the second volume control damper by the monitor value obtaining sensor, thus realizes the indoor pressure reduction of positive control effect constant all the time.Solve that existing positive control indoor and outdoor pressure reduction is unstable, cleanliness factor is low, the easy affected technical problem of result of the test well.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the air circulation system of existing positive control room;
Fig. 2 is the structural representation of the utility model pressure reduction control system.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Shown in composition graphs 1 and Fig. 2, the utility model discloses a kind of pressure reduction control system of positive control room, this control system is used for the draught head of constant contrast indoor and outdoor, maintain the circulation of air, when making Biohazard Safety Equipment 200 frequent start-stop, contrast is indoor can also keep constant humiture and cleanliness factor, provides favourable help for operating personnel carry out testing.
Concrete, as shown in Figure 2, described pressure reduction control system comprises air-conditioning box 320, air exhaust box 310, air outlet 330, first row airduct 311, second row airduct 312 and ajutage 331.This positive control room 100 is by first row airduct 311 and air exhaust box 310 pipeline communication.This Biohazard Safety Equipment 200 is by second row airduct 312 and air exhaust box 310 pipeline communication.Described air-conditioning box 320 is by ajutage 331 and air outlet 330 pipeline communication.
The air circulation process of positive control room 100 is: air-supply circulation, and what first air filtered through air-conditioning box 320 becomes clean air, then arrives air outlet 330 by ajutage 331, enters in positive control room 100 finally by air outlet 330; Air draft circulates, and positive control room 100 room air arrives air exhaust box 310 by first row airduct 311 and discharges, and the air of Biohazard Safety Equipment 200 arrives air exhaust box 310 by second row airduct 312 and discharges.
Important, as shown in Figure 2, described pressure reduction control system also comprise controller 340, sensor 350, for controlling the first volume control damper 360 of positive control room 100 exhaust air rate and the second volume control damper 370 for controlling Biohazard Safety Equipment 200 exhaust air rate.Described controller 340 is electrically connected with air exhaust box 310, air-conditioning box 320, sensor 350, first volume control damper 360 and the second volume control damper 370 respectively.Described sensor 350 is arranged in positive control room 100, feeds back to controller 340 for the pressure reduction in Control Room.Described first volume control damper 360 is arranged on first row airduct 311, for the aperture of the signal control and regulation valve according to controller 340, thus regulates the exhaust air rate of this pipeline.Described second volume control damper 370 is arranged on second row airduct 312, for the aperture of the Signal Regulation valve according to controller 340, thus regulates the exhaust air rate of this pipeline.
The operation principle of described pressure reduction control system is that first controller 340 obtains the measured value of sensor 350, judges the differential pressure conditions in positive control room 100 with this; Then controller 340 regulates the exhaust air rate of first row airduct 311 by controlling the first volume control damper 360, thus regulates the pressure reduction in positive control room 100; Finally, when Biohazard Safety Equipment 200 is opened or is stopped, the pressure reduction that sensor 350 monitors in positive control room 100 has fluctuation, controller 340 is fed back to by the signal of telecommunication, controller 340 controls the first volume control damper 360 and the second volume control damper 370 simultaneously, regulate the air quantity of first row airduct 311 and second row airduct 312, make the pressure reduction of positive control room 100 return to original level, air-supply circulation and air draft circulation are in the state of dynamic equilibrium.
, strong interference immunity high based on PLC reliability, the advantage that easy to maintenance, volume is little and energy consumption is low, after being applied to positive control room 100 pressure reduction control system, there is good effect, therefore, described controller 340 is preferably set to PLC by the present embodiment.
Preferably, because proportional integral volume damper has easy for installation, little, the long service life of taking up room and the low advantage of operating noise, therefore, described first volume control damper 360 and the second volume control damper 370 are all set to proportional integral volume control damper by the present embodiment.
Preferably, described sensor 350 is preferably set to differential pressure pickup by the present embodiment, and this differential pressure pickup has that reliability is high, working stability, certainty of measurement are high and the advantage such as temperature influence is little.
Because efficient air distributor has the low advantage of highly versatile, installation and removal convenience, compact conformation and cost, therefore, described air outlet 330 is preferably set to efficient air distributor by the present embodiment.
Preferably, because the Area comparison of positive control room 100 is little, therefore in order to save the interior space, reduce the area taken, described first ajutage 331 accesses a section of positive control room 100 and is set to air draft post 313, described air draft post 313 is arranged in positive control room 100, and the bottom of described air draft post 314 is provided with exhaust outlet 314.
In sum, the utility model adds pressure reduction control system in the original air-supply air draft in positive control room 100 circulatory system, controller 340 controls the aperture of the first volume control damper 360 and the second volume control damper 370 by the monitor value obtaining sensor 350, thus realizes the effect that in positive control room 100, pressure reduction is constant all the time.Solve that existing positive control room 100 inside and outside differential pressure is unstable, cleanliness factor is low, the easy affected technical problem of result of the test well.
Above disclosedly be only a kind of preferred embodiment of the utility model, certainly can not limit the interest field of the utility model with this, therefore according to the equivalent variations that the utility model claim is done, still belong to the scope that the utility model is contained.
Claims (6)
1. a pressure reduction control system for positive control room, comprises air-conditioning box, air exhaust box, air outlet, first row airduct, second row airduct and ajutage; It is characterized in that, described pressure reduction control system also comprises controller, sensor, the first volume control damper and the second volume control damper; Described controller is electrically connected with air exhaust box, air-conditioning box, sensor, the first volume control damper and the second volume control damper respectively; Described sensor setting is indoor at positive control, and described first volume control damper is arranged on first row airduct, and described second volume control damper is arranged on second row airduct.
2. the pressure reduction control system of positive control room according to claim 1, is characterized in that, described air exhaust box is by first row airduct and positive control room pipeline communication; Described air exhaust box is by second row airduct and Biohazard Safety Equipment pipeline communication; Described air-conditioning box is by ajutage and air outlet pipeline communication.
3. the pressure reduction control system of positive control room according to claim 2, is characterized in that, described controller is set to PLC.
4. the pressure reduction control system of positive control room according to claim 3, is characterized in that, described first volume control damper and the second volume control damper are all set to proportional integral volume control damper.
5. the pressure reduction control system of positive control room according to claim 4, is characterized in that, described sensor setting is differential pressure pickup.
6. the pressure reduction control system of positive control room according to claim 5, is characterized in that, described air outlet is set to efficient air distributor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520606826.2U CN204830359U (en) | 2015-08-12 | 2015-08-12 | Pressure differential control system of positive control room |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520606826.2U CN204830359U (en) | 2015-08-12 | 2015-08-12 | Pressure differential control system of positive control room |
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| CN204830359U true CN204830359U (en) | 2015-12-02 |
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| CN201520606826.2U Active CN204830359U (en) | 2015-08-12 | 2015-08-12 | Pressure differential control system of positive control room |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105509223A (en) * | 2015-12-17 | 2016-04-20 | 安徽华盛科技控股股份有限公司 | CIT pressure adjustable ventilation and purification system |
| CN106909179A (en) * | 2017-03-13 | 2017-06-30 | 深圳市昶檀实业有限公司 | A kind of large-sized dust free room pressure difference monitoring and method of adjustment |
| CN109654602A (en) * | 2018-12-13 | 2019-04-19 | 湖南普信工程技术有限公司 | A kind of pressure difference control system of toilet |
| CN112611094A (en) * | 2021-01-05 | 2021-04-06 | 辽宁友信德建筑工程有限公司 | Pressure balancing device of laboratory air conditioner circulating system |
-
2015
- 2015-08-12 CN CN201520606826.2U patent/CN204830359U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105509223A (en) * | 2015-12-17 | 2016-04-20 | 安徽华盛科技控股股份有限公司 | CIT pressure adjustable ventilation and purification system |
| CN106909179A (en) * | 2017-03-13 | 2017-06-30 | 深圳市昶檀实业有限公司 | A kind of large-sized dust free room pressure difference monitoring and method of adjustment |
| CN109654602A (en) * | 2018-12-13 | 2019-04-19 | 湖南普信工程技术有限公司 | A kind of pressure difference control system of toilet |
| CN112611094A (en) * | 2021-01-05 | 2021-04-06 | 辽宁友信德建筑工程有限公司 | Pressure balancing device of laboratory air conditioner circulating system |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder |
Address after: 510000 self compiled C02 No. four of C building, No. 2, Guangzhou Road, Guangzhou hi tech Industrial Development Zone, Guangzhou, China Patentee after: GUANGZHOU AOSHENG CLEANING TECHNOLOGY CO., LTD. Address before: 510000 room 401-405, Productivity Promotion Center, 12 research road, Science City, Guangzhou, Guangdong Patentee before: GUANGZHOU AOSHENG CLEANING TECHNOLOGY CO., LTD. |
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| CP02 | Change in the address of a patent holder |