Pressure reduction monitoring system
Technical field
This utility model is related to monitoring system technical field, particularly to a kind of pressure reduction monitoring system.
Background technology
With social continuous development, the quality control to spaces such as dust free room, sterilizing room, operating room, laboratorys for the people
Require increasingly stricter, not only its temperature and humidity is required very high, and also very high to its differential pressure requirements.In these spaces
It is designed with for controlling the air conditioning unit of pressure reduction, the certain malleation of some space requirements, some spaces then need certain negative pressure.
Once and the pressure reduction in these spaces occurs extremely, being just easy to contamination accident, thus provide a kind of pressure reduction monitoring system
Particularly necessary.
Content of the invention
Based on this, this utility model is to overcome the defect of prior art, provides a kind of pressure reduction monitoring system, reduces pollution
The probability that accident occurs is it is ensured that safety.
Its technical scheme is as follows:
A kind of pressure reduction monitoring system, including first pressure detection means, second pressure detection means, preset value memorizer,
Display device, alarm device and controller, described first pressure detection means is used for detecting the air pressure of interior to be monitored, described the
Two pressure-detecting devices are used for detecting the air pressure of outdoor to be monitored, described display device is used for showing pressure difference, described first pressure
Force checking device, second pressure detection means, preset value memorizer, display device, alarm device are electrically connected with controller respectively
Connect.
Wherein in an embodiment, described pressure reduction monitoring system also includes air conditioning unit parameter acquisition devices, described sky
Unit parameter harvester is adjusted to be electrically connected with controller.
Wherein in an embodiment, described air conditioning unit parameter acquisition devices include fan parameter harvester, humidifier
Parameter acquisition unit, heater parameter harvester, water valve parameter acquisition unit and air-valve parameter acquisition unit, described fan parameter collection
Device, humidifier parameter acquisition unit, heater parameter harvester, water valve parameter acquisition unit, air-valve parameter acquisition unit respectively with control
Device is electrically connected with.
Wherein in an embodiment, described first pressure detection means is arranged on interior to be monitored, described second pressure
Detection means is arranged on outdoor to be monitored.
Wherein in an embodiment, described first pressure detection means, second pressure detection means are pressure sensing
Device.
Wherein in an embodiment, described first pressure detection means, second pressure detection means are that same pressure reduction passes
Sensor.
Wherein in an embodiment, described alarm device is alarm lamp and/or emergency alarm bell.
Wherein in an embodiment, described display device is LED display.
Wherein in an embodiment, described controller is PLC.
Below the advantage or principle of preceding solution is illustrated:
Above-mentioned pressure reduction monitoring system, is detected respectively with second pressure detection means using first pressure detection means and waits to supervise
Survey outdoor air pressure indoor and to be monitored, and show the pressure difference of indoor and outdoor to be monitored by display device, so that staff
It is visually known pressure reduction situation.When the pressure reduction of indoor and outdoor to be monitored exceeds preset value, controller can control alarm device to send out
Go out alarm signal, remind staff's investigation fault rootstock it is ensured that safety.
Brief description
Fig. 1 is the structural representation of the pressure reduction monitoring system described in this utility model embodiment.
Description of reference numerals:
1st, room to be monitored, 2, first pressure detection means, 3, second pressure detection means, 4, preset value memorizer, 5, aobvious
Showing device, 6, alarm device, 7, controller, 8, air conditioning unit parameter acquisition devices, 80, fan parameter harvester, 81, humidifier
Parameter acquisition unit, 82, heater parameter harvester, 83, water valve parameter acquisition unit, 84, air-valve parameter acquisition unit.
Specific embodiment
Below embodiment of the present utility model is described in detail:
As shown in figure 1, the pressure reduction monitoring system described in the present embodiment, including first pressure detection means 2, second pressure inspection
Survey device 3, preset value memorizer 4, display device 5, alarm device 6 and controller 7, described first pressure detection means 2 is used for
Detect the air pressure in room 1 to be monitored, described second pressure detection means 3 is used for detecting the air pressure outside room 1 to be monitored, described display
Device 5 is used for showing pressure difference, described first pressure detection means 2, second pressure detection means 3, preset value memorizer 4, aobvious
Showing device 5, alarm device 6 are electrically connected with controller 7 respectively.Above-mentioned pressure reduction monitoring system, using first pressure detection means 2
Detect the air pressure in room 1 to be monitored and outside room 1 to be monitored respectively with second pressure detection means 3, and shown by display device 5
Show the pressure difference inside and outside room 1 to be monitored, so that staff is visually known pressure reduction situation.Pressure inside and outside room 1 to be monitored
When difference is beyond preset value, controller 7 can control alarm device 6 to send alarm signal, remind staff's investigation fault rootstock, protect
Card safety.It should be noted that the room to be monitored 1 described in the present embodiment can be dust free room, sterilizing room, operating room, laboratory
Need to control the space of pressure reduction Deng toilet or other.
In the present embodiment, described pressure reduction monitoring system also includes air conditioning unit parameter acquisition devices 8, described air conditioning unit
Parameter acquisition devices 8 are electrically connected with controller 7.Air conditioning unit parameter acquisition devices 8 collect air conditioning unit operational factor,
Staff can recognize air conditioning unit operation conditions by display device 5.Air conditioning unit parameter described in the present embodiment
Harvester 8 includes fan parameter harvester 80, humidifier parameter acquisition unit 81, heater parameter harvester 82, water valve parameter
Harvester 83 and air-valve parameter acquisition unit 84, described fan parameter harvester 80, humidifier parameter acquisition unit 81, heater parameter
Harvester 82, water valve parameter acquisition unit 83, air-valve parameter acquisition unit 84 are electrically connected with controller 7 respectively.When blower fan, humidification
When the operational factor of device, heater, water valve or air-valve exceeds preset value, controller 7 can control alarm device 6 to send alarm signal
Number, remind staff to carry out malfunction elimination and maintenance to related equipment.
Preferably, described first pressure detection means 2 is arranged in room 1 to be monitored, and described second pressure detection means 3 sets
Put the actual value that can reflect room 1 to be monitored inner and outer air pressure outside room 1 to be monitored exactly.It is to be appreciated that first pressure inspection
Surveying device 2 can also be by, in pipeline communication room to be monitored 1, second pressure detection means 3 can also be waited to supervise by pipeline communication
Survey outside room 1 it is also possible to reach the purpose detecting room 1 to be monitored inner and outer air pressure.
In the present embodiment, described first pressure detection means 2, second pressure detection means 3 are pressure transducer.?
In other embodiments, it would however also be possible to employ same differential pressure pickup is as first pressure detection means 2 and second pressure detection means
3.Alarm device 6 described in the present embodiment is emergency alarm bell, in other embodiments can also be using alarm lamp as alarm device
6.Described display device 5 is LED display, has the advantages that brightness is high, energy consumption is little, life-span length.Described controller 7 is controlled for PLC
Device processed, have low price, multiple functional, application flexible the features such as.Wherein it is possible to be deposited using the data of PLC
Reservoir is as preset value memorizer 4 it is also possible to by the use of other independent memorizeies as preset value memorizer 4.
Each technical characteristic of embodiment described above can arbitrarily be combined, for making description succinct, not to above-mentioned reality
The all possible combination of each technical characteristic applied in example is all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all it is considered to be the scope of this specification record.
Embodiment described above only have expressed several embodiments of the present utility model, and its description is more concrete and detailed,
But therefore can not be interpreted as the restriction to utility model patent scope.It should be pointed out that the common skill for this area
For art personnel, without departing from the concept of the premise utility, some deformation can also be made and improve, these broadly fall into
Protection domain of the present utility model.Therefore, the protection domain of this utility model patent should be defined by claims.