CN108628370A - Environment control method and system in the case detected in conjunction with micro-positive pressure and SF6 - Google Patents
Environment control method and system in the case detected in conjunction with micro-positive pressure and SF6 Download PDFInfo
- Publication number
- CN108628370A CN108628370A CN201810585685.9A CN201810585685A CN108628370A CN 108628370 A CN108628370 A CN 108628370A CN 201810585685 A CN201810585685 A CN 201810585685A CN 108628370 A CN108628370 A CN 108628370A
- Authority
- CN
- China
- Prior art keywords
- case
- air pressure
- air
- humidity
- pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000001514 detection method Methods 0.000 claims abstract description 59
- 238000004378 air conditioning Methods 0.000 claims abstract description 19
- 230000001105 regulatory effect Effects 0.000 claims abstract description 8
- 239000007789 gas Substances 0.000 claims description 82
- 238000005273 aeration Methods 0.000 claims description 56
- 230000007613 environmental effect Effects 0.000 claims description 21
- 238000007791 dehumidification Methods 0.000 claims description 11
- 238000009434 installation Methods 0.000 claims description 9
- 229920003023 plastic Polymers 0.000 claims description 6
- 239000004033 plastic Substances 0.000 claims description 6
- 230000008859 change Effects 0.000 claims description 5
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims description 3
- 229910001882 dioxygen Inorganic materials 0.000 claims description 3
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 abstract description 38
- 229910018503 SF6 Inorganic materials 0.000 abstract description 37
- 229960000909 sulfur hexafluoride Drugs 0.000 abstract description 36
- 230000008569 process Effects 0.000 abstract description 8
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 238000012544 monitoring process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000002341 toxic gas Substances 0.000 description 3
- 238000011217 control strategy Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 231100000331 toxic Toxicity 0.000 description 2
- 230000002588 toxic effect Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 231100000045 chemical toxicity Toxicity 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D27/00—Simultaneous control of variables covered by two or more of main groups G05D1/00 - G05D25/00
- G05D27/02—Simultaneous control of variables covered by two or more of main groups G05D1/00 - G05D25/00 characterised by the use of electric means
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Air Conditioning Control Device (AREA)
Abstract
Environment control method and system in a kind of combination micro-positive pressure and the case of SF6 detections, the data that control unit therein passes through baroceptor, gas concentration sensor, temperature sensor and humidity sensor, to detect inner and outer air pressure power, SF6 gas contents, inside and outside case humiture data, integrated treatment is carried out, environment in relevant apparatus regulating box is controlled.The present invention makes full use of case external environment in adjustment process, with safely for target, sulfur hexafluoride gas content is less than safety value in guard box while realizing micro-positive pressure in case.In particular, the present invention in external environment more close to setting value when, can be directly by fresh air system and air exhausting device, by external humiture leading-in box, to save the energy consumption of the equipment such as air-conditioning.The present invention also further differentiates internal and external environment pressure difference trend when maintaining micro-positive pressure in case, more accurate to the adjusting of air pressure in case, disclosure satisfy that demand of the power industry equipment to detection environment.
Description
Technical field
The present invention relates to environment measuring technology more particularly to the control methods and system in a plants case inner ring border.
Background technology
Sulfur hexafluoride (SF6) be used as a kind of incombustible gas, chemical property stablize, be commonly used in electrical equipment for
Insulation or arc extinguishing use.However, since the gas is provided simultaneously with chemical toxicity, it needs to carry out in real time using its babinet
Leak detection, control the temperature inside the box, humidity, and the timely vented exhaust when finding gas leakage.
In addition, existing babinet, is typically necessary maintenance slight positive pressure state.Air draft operation is carried out in case of SF6 alarms to reveal,
Existing babinet is often difficult to meet positive pressure demand because of air draft, or even negative pressure occurs.Under negative pressure state, into the gas of babinet
Not by filtering, hidden danger thus will produce.How to detect abnormal situation in sulfur hexafluoride and gets off to maintain box house environment
It is relative constant, in particular, keeping the state of micro-positive pressure, it has also become urgent problem to be solved at present.
However, currently, the control of micro-positive pressure is substantially is realized using pressure difference switch.Pressure difference switch accuracy of detection is low,
Control can only be realized according to fixed pressure difference.It judges that state only has " meeting pressure difference " and " being unsatisfactory for pressure difference " two states, can not
Reached according to live actual demand and is precisely controlled.
And current micro-positive pressure control is used only in space inside and outside into pressure is kept during changing wind, it will not be micro-
Over-pressure control combines with Temperature and Humidity Control, and external environment humiture is to environment in case in the case of also not accounting for introducing fresh air
Influence.In actual case in environmental Kuznets Curves, complicated internal and external environment how is successfully managed, maintains environment in case constant,
Just become problem to be solved.Controller in the present invention is exactly to be generated to solve these demands.
Invention content
In order to solve the shortcomings of the prior art, the purpose of the present invention is to provide a kind of combination micro-positive pressures and SF6 to examine
Environment control method and system in the case of survey.
First, to achieve the above object, environment control method in a kind of combination micro-positive pressure and the case of SF6 detections, packet are proposed
Include following steps：
The first step, SF6 gas concentrations in detection case are opened when SF6 gas concentrations exceed SF6 concentration preset values in the case
Open air exhausting device；When in the case SF6 gas concentrations without departing from SF6 concentration preset values when close air exhausting device；
Second step, the inside and outside air pressure of detection case, when compared to air pressure outside case to be not up to micro-positive pressure default for air pressure positive pressure in the case
When range, aeration device is opened；When air pressure positive pressure is more than micro-positive pressure preset range compared to air pressure outside case in the case, close new
Wind apparatus；When air pressure positive pressure is in compared to air pressure outside case in micro-positive pressure preset range in the case, further gas in case is judged
Press variable quantity：When air pressure reduces in case, increase aeration device open amount；When air pressure increases in case, reduces aeration device and open
Qi Liang；When air pressure is constant in case, aeration device open amount is maintained；
Third walks, the inside and outside temperature of detection case, the inside and outside humidity of detection case, if box outside temperature or humidity are pre- closer to temperature
If value or humidity preset value, then open air exhausting device and the aeration device；If the temperature inside the box or humidity are closer to temperature
Preset value or humidity preset value, then close air exhausting device；And temperature is accordingly controlled according to the temperature preset value or humidity preset value
Regulating device or humidity control apparatus are spent, adjusts the temperature inside the box or humidity to the temperature preset value or humidity preset value.
Further, in the above method, the inside and outside air pressure of case is detected by baroceptor respectively, and detecting step includes：
The air pressure interface of the baroceptor is connected to the position of stable gas pressure in case by step S1 by plastics respectively
With the position of stable gas pressure outside case, air pressure signal and the outer air pressure signal of case in the case of the baroceptor detection are obtained respectively；
Step S2, air pressure outside air pressure signal and case in the case detected to the baroceptor by two-way RC circuits respectively
Signal is filtered；
Filtered signal is converted in case barometric information outside barometric information and case, detected respectively described by step S3
Barometric information and the outer barometric information of case in case.
Secondly, to achieve the above object, it is also proposed that environmental control system in a kind of combination micro-positive pressure and the case of SF6 detections,
Including gas concentration sensor, baroceptor, air exhausting device, aeration device and control unit, described control unit connects institute
State gas concentration sensor, baroceptor, air exhausting device and aeration device, wherein the gas concentration sensor is for examining
Gas concentration in measuring tank；The baroceptor is used for the inside and outside air pressure of detection case；Described control unit is used for：Read the gas
Concentration sensors detection case in gas concentration, when in the case gas concentration beyond or below gas concentration preset value when open
Open air exhausting device；And the inside and outside air pressure of case of the baroceptor detection is read, when air pressure positive pressure is compared outside case in the case
When air pressure is not up to micro-positive pressure preset range, aeration device is opened；It is more than micro- when air pressure positive pressure compares air pressure outside case in the case
When positive pressure preset range, aeration device is closed；When air pressure positive pressure is in micro-positive pressure preset range compared to air pressure outside case in the case
When interior, further air pressure change amount in case is judged：When air pressure reduces in case, increase aeration device open amount；When air pressure in case
When increase, aeration device open amount is reduced；When air pressure is constant in case, aeration device open amount is maintained.
Further, in above system, the gas concentration sensor includes that SF6 gas concentration sensors or oxygen gas are dense
Spend sensor.
Specifically, in above system, the aeration device quantity is at least three, and/or, the aeration device gear is extremely
Few 3 gear；The aeration device open amount includes the quantity and/or gear that the aeration device is opened.
Specifically, in above system, the baroceptor includes that at least two air pressure interfaces and at least three signal export
End；Described two air pressure interfaces are connected to the position of stable gas pressure outside the position of stable gas pressure and case in case by plastics respectively,
Air pressure signal and the outer air pressure signal of case in the case of the baroceptor detection are obtained respectively；One letter of the baroceptor
Number output end connects common level, and the another two signal output end of the baroceptor is separately connected two RC filter circuits,
Described two RC filter circuits parameters are identical, and the output end of described two RC filter circuits is separately connected described control unit, lead to
It crosses described control unit and the filtered electric signal of RC filter circuits is converted into case barometric information outside barometric information and case, point
Barometric information and the outer barometric information of case in the case are not obtained.
Further, further include temperature sensor, air-conditioning or electric calorifie installation, the temperature sensor, air-conditioning in above system
Or electric calorifie installation is separately connected described control unit；Wherein, the temperature sensor is used for the inside and outside temperature of detection case；The control
Unit processed is additionally operable to：The inside and outside temperature of case for reading the temperature sensor detection, if box outside temperature is default closer to temperature
Value, then open air exhausting device and the aeration device；If the temperature inside the box closes air draft dress closer to temperature preset value
It sets, and, the air-conditioning or electric calorifie installation are controlled according to the temperature preset value, adjust the temperature inside the box to the temperature preset value.
Further, further include humidity sensor and dehumidification device in above system, the humidity sensor and dehumidifying fill
It sets and is separately connected described control unit；Wherein, the humidity sensor is used for the inside and outside humidity of detection case；Described control unit is also
For：Using the inside and outside humidity of humidity sensor detection case, if the outer humidity of case is closer to humidity preset value, the row of unlatching
Wind apparatus and the aeration device；If humidity closes air exhausting device closer to humidity preset value in case, and, according to institute
It states humidity preset value and controls the dehumidification device, humidity is to the humidity preset value in regulating box.
Specifically, in above system, the baroceptor is Model 26PX509；The gas concentration sensor
SF6-1500；The temperature sensor HTG3535；The humidity sensor HTG3535；Described control unit selects microcontroller system
System.
Advantageous effect
The present invention, using control unit by the data of baroceptor and gas concentration sensor, in detecting
Outer air pressure, SF6 gas contents carry out integrated treatment, control environment in relevant apparatus regulating box.The present invention fills in adjustment process
Divide and utilize case external environment, with safely for target, sulfur hexafluoride gas content is low in guard box while realizing micro-positive pressure in case
In safety value.The present invention also further differentiates internal and external environment pressure difference trend, to the tune of air pressure in case when maintaining micro-positive pressure in case
Section is more accurate, disclosure satisfy that demand of the power industry equipment to detection environment.
Further, the baroceptor that the present invention uses can finely detect pressure data, and control accuracy is far above biography
The fixation pressure difference of system pressure difference switch.The present invention can be further from satisfaction, ungratified two states by slight positive pressure state as a result,
It carefully divides multiple states into, realizes and the intelligent decision of the trend of micro-positive pressure in case is controlled, fresh air inlet is subjected to grading control (root
Aeration device open amount is adjusted according to demand, includes the quantity and/or gear of aeration device unlatching).In particular, the present invention also increases
Added with temperature sensor and humidity sensor, the data of humiture and above-mentioned inner and outer air pressure, SF6 gas inside and outside the case that is detected
Body content carries out integrated treatment together.The present invention can be further retaining ring in the case of SF6 sensing detection safety as a result,
Border temperature and humidity stability actively carries out air draft and changes wind, and the outer humiture of leading-in box reduces environment and adjusts required energy consumption.The adjusting
Mode is substantially better than common positive pressure system：Micro-positive pressure and ambient temperature and humidity can be controlled on the basis of keeping positive pressure merely
In conjunction with, by internal-external temperature difference, psychrometric difference calculate target energy consumption, drawn according to the carry out barotropic gas of the selectivity of internal and external environment
Enter.Both the demand for control for having met ambient temperature and humidity, also saves the energy.
In particular, micro-positive pressure control and SF6 gas detections are combined by the present invention, it is different from traditional simple discharge toxic gas
Mode, the present invention is carried out at the same time micro-positive pressure control when toxic gas is discharged, and can effectively avoid that toxic gas is counter to be filled, and reduces
SF6 gas concentrations are better.
Other features and advantages of the present invention will be illustrated in the following description, also, partly becomes from specification
It obtains it is clear that understand through the implementation of the invention.
Description of the drawings
Attached drawing is used to provide further understanding of the present invention, and a part for constitution instruction, and with the present invention's
Embodiment together, for explaining the present invention, is not construed as limiting the invention.In the accompanying drawings：
Fig. 1 is the control process schematic of existing environmental control system；
Fig. 2 is environmental Kuznets Curves process schematic in the case according to the present invention；
Fig. 3 is environmental control system block diagram in the case according to the present invention；
Fig. 4 is the flow chart of micro-positive pressure control aspect in environmental control system in the case according to the present invention；
Fig. 5 is the flow chart of gas concentration control aspect in environmental control system in the case according to the present invention；
Fig. 6 is that environmental control system is required in pressure air draft, case under refrigerated dehumidification demand in the case according to the present invention
Control schematic diagram；
Fig. 7 is the circuit diagram of baroceptor in environmental control system in the case according to the present invention.
Specific implementation mode
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, it should be understood that preferred reality described herein
Apply example only for the purpose of illustrating and explaining the present invention and is not intended to limit the present invention.
Fig. 1 is the control process schematic of existing environmental control system.It can by the method for operation under different mode in figure
To know, existing control mode does not consider the influence of case external environment in control cabinet when environment, meanwhile, also lack to case inner ring
The real time monitoring of border changed condition, the dynamic that cannot achieve between each state of a control redirect.It is micro-positive pressure, gas concentration, temperature, wet
The control of degree is relatively independent：The operation of air exhausting device relies only on the judgement of the gas concentration of single dimension, the operation of aeration device
The judgement of the slight positive pressure state of single dimension is relied only on, the operation of air-conditioning device relies only on sentencing for the temperature inside the box of single dimension
Disconnected, the operation of dehumidification device relies only on the judgement of humidity in the case of single dimension.Once obtaining the state of a control of each dimension, it is being
System ambient condition and then updates in the whole cycle of state of a control in detection case again, will keep running with current control state.
By taking babinet only carries out Temperature and Humidity Control as an example, existing control mode is to judge environment temperature and target environment temperature in case respectively,
Judge ambient humidity and target environment humidity in case, then operation component (air-conditioning or dehumidifier) is controlled.Due to each control
Redirecting between state processed be required to by completely to environment temperature in case and target environment temperature, to ambient humidity in case with
Often there is lag in the comparison process of target environment humidity, therefore, state transition.And which can not utilize external environment
Internal environment is adjusted, efficiency of energy utilization is relatively low, long to the response cycle of environmental change in case, and degree of regulation is insufficient.
Based on the problems of above-mentioned technology, the present invention proposes in the case of combination micro-positive pressure and SF6 detection shown in Fig. 2
Environment control method.It can be corresponded to referring to Fig. 3 using the system of this method.
Specifically, shown in Figure 2, environment control method in the case of combination micro-positive pressure and SF6 detection provided by the invention, packet
Include following the step of can executing side by side：
The first step, SF6 gas concentrations in detection case are opened when SF6 gas concentrations exceed SF6 concentration preset values in the case
Open air exhausting device；When in the case SF6 gas concentrations without departing from SF6 concentration preset values when close air exhausting device；
Second step, the inside and outside air pressure of detection case, when compared to air pressure outside case to be not up to micro-positive pressure default for air pressure positive pressure in the case
When range, aeration device is opened；When air pressure positive pressure is more than micro-positive pressure preset range compared to air pressure outside case in the case, close new
Wind apparatus；When air pressure positive pressure is in compared to air pressure outside case in micro-positive pressure preset range in the case, further gas in case is judged
Press variable quantity：When air pressure reduces in case, increase aeration device open amount；When air pressure increases in case, reduces aeration device and open
Qi Liang；When air pressure is constant in case, aeration device open amount is maintained；Wherein, the micro-positive pressure preset range may be configured as with mesh
Centered on preceding air pressure, the range of positive and negative 10 pa；
Third walks, the inside and outside temperature of detection case, the inside and outside humidity of detection case, if box outside temperature or humidity are pre- closer to temperature
If value or humidity preset value, then open air exhausting device and the aeration device；If the temperature inside the box or humidity are closer to temperature
Preset value or humidity preset value, then close air exhausting device；And temperature is accordingly controlled according to the temperature preset value or humidity preset value
Regulating device or humidity control apparatus are spent, adjusts the temperature inside the box or humidity to the temperature preset value or humidity preset value.
The above method need to depend on system shown in Figure 3 to realize.The system includes：Gas concentration sensor, baroceptor,
Air exhausting device, aeration device and control unit, described control unit connect the gas concentration sensor, baroceptor, row
Wind apparatus and aeration device, wherein the gas concentration sensor includes that at least two in case and outside case (i.e. marks in Fig. 3
C2, C1), for gas concentration in detection case；The baroceptor include in case and case outside at least two air pressure interface (i.e.
P2, P1 are marked in Fig. 3), it is used for the inside and outside air pressure of detection case；Described control unit is used for：Read the gas concentration sensor inspection
Gas concentration in the case of survey, when in the case gas concentration beyond or below gas concentration preset value when open air exhausting device；And
The inside and outside air pressure of case for reading baroceptor detection, when in the case air pressure positive pressure compared to air pressure outside case be not up to it is micro- just
When pressing preset range, aeration device is opened；When air pressure positive pressure is more than micro-positive pressure preset range compared to air pressure outside case in the case,
Close aeration device；When air pressure positive pressure is in compared to air pressure outside case in micro-positive pressure preset range in the case, further judge
Air pressure change amount in case：When air pressure reduces in case, increase aeration device open amount；When air pressure increases in case, fresh air is reduced
Device open amount；When air pressure is constant in case, aeration device open amount is maintained.
In system, the inside and outside air pressure of case is realized by P1, P2 air pressure interface of baroceptor detect respectively, air pressure transmission
The detection of sensor can be achieved by the steps of：
The air pressure interface of the baroceptor is connected to the position of stable gas pressure in case by step S1 by plastics respectively
With the position of stable gas pressure outside case, air pressure signal and the outer air pressure signal of case in the case of the baroceptor detection are obtained respectively；
Step S2, step S2, in the case detected to the baroceptor by two-way RC circuits respectively air pressure signal and
The outer air pressure signal of case is filtered；
Filtered signal is converted in case barometric information outside barometric information and case, detected respectively described by step S3
Barometric information and the outer barometric information of case in case.
Above-mentioned steps are realized by circuit shown in Fig. 7：Baroceptor X509 includes at least two air pressure interfaces, and at least
3 signal output ends, wherein：Described two air pressure interfaces are connected in case by plastics outside the position of stable gas pressure and case respectively
The position of stable gas pressure obtains air pressure signal and the outer air pressure signal of case in the case of the baroceptor detection respectively；The gas
The signal output end connection common level (in the present embodiment publicly especially by 2 mouthfuls of connections) of pressure sensor, the gas
The another two signal output end (1 mouthful and 3 mouthfuls corresponding) of pressure sensor is separately connected two RC filter circuits.RC filter circuits include
One resistance value is the resistance and a capacitance of 1k.One end connection signal output end of resistance, the other end of resistance by capacity earth,
The common end of resistance and capacitance connects control unit as the output end of the RC filter circuits.Described two RC filter circuits
Parameter is identical, and the output end of described two RC filter circuits is separately connected described control unit, by described control unit by RC
The filtered electric signal of filter circuit is converted to barometric information and the outer barometric information of case in case, obtains air pressure number in the case respectively
According to barometric information outside case.
In above system, the gas concentration sensor specifically may include that SF6 gas concentration sensors or oxygen gas are dense
Spend sensor.
To realize Multistage Control, in above system, the aeration device quantity is at least three, and/or, the fresh air dress
It is at least 3 gears to set gear；The aeration device open amount includes the quantity and/or gear that the aeration device is opened.
It is relatively independent, for the control for realizing to the temperature inside the box, in above system, it may also include temperature sensor, air-conditioning
Or electric calorifie installation, the temperature sensor, air-conditioning or electric calorifie installation are separately connected described control unit；Wherein, the temperature passes
Sensor is used for the inside and outside temperature of detection case；Described control unit is additionally operable to：Read the inside and outside temperature of case of the temperature sensor detection
Degree, if box outside temperature opens air exhausting device and the aeration device closer to temperature preset value；If the temperature inside the box more connects
It is bordering on temperature preset value, then closes air exhausting device, and, the air-conditioning or electric calorifie installation are controlled according to the temperature preset value, adjusted
The temperature inside the box is saved to the temperature preset value.
It is similar therewith, to realize control to humidity in case, in above system, it may also include humidity sensor and dehumidifying fill
It sets, the humidity sensor and dehumidification device are separately connected described control unit；Wherein, the humidity sensor is used for detection case
Inside and outside humidity；Described control unit is additionally operable to：Using the inside and outside humidity of humidity sensor detection case, if the outer humidity of case more connects
It is bordering on humidity preset value, then opens air exhausting device and the aeration device；If humidity is closer to humidity preset value in case,
Air exhausting device is closed, and, the dehumidification device is controlled according to the humidity preset value, humidity is default to the humidity in regulating box
Value.
Specifically, in above system, the baroceptor is Model 26PX509；The gas concentration sensor
SF6-1500；The temperature sensor HTG3535；The humidity sensor HTG3535；Described control unit selects microcontroller system
System.
System of the present invention can refer to flow chart shown in Fig. 4 when executing micro-positive pressure control merely as a result,.Area
Not at present in the control of air pressure in case, by the way of pressure difference switch control.The present invention because introduce baroceptor, from
And solve pressure difference switch state and only meet pressure difference and be unsatisfactory for pressure difference two, it has no idea to know outer gas in current box
The problem of variation tendency of the particular state of pressure and related data.In particular, by baroceptor, detected by baroceptor
The data arrived, the present invention are meeting the intermediate state of micro-positive pressure preset range (state for maintaining micro-positive pressure) into fuzzy fresh air
Pattern further calculates pressure difference variation tendency, and the control strategy for being currently directed to micro-positive pressure is determined according to the trend.Due to the present invention
By the comparison to current micro-positive pressure setting and practical micro-positive pressure data, it is additionally arranged fuzzy fresh air pattern.In fuzzy fresh air pattern
Under, in judgement whether carrying out Leads to new breeze, by the analysis to micro-positive pressure barometric information, understands the variation of case inside and outside differential pressure and become
Gesture determines the control strategy of the Leads to new breeze mouth under present Fuzzy fresh air pattern, as a result, the gradable new wind turbine number of control of the invention
Amount or gear, reach and micro-positive pressure be precisely controlled, and avoid aeration device all operation and caused by the wasting of resources.
Specifically, in above-mentioned control, micro-positive pressure preset range refers to the high how many deviation of case internal ratio case external pressure, as wanted in case
It asks higher 100pa than case external pressure, then when case internal ratio case external pressure is less than 100pa- deviations, needs to introduce fresh air, to ensure
Pressure outside case internal ratio case is high, when case internal ratio case external pressure is higher than 100pa+ deviations, then need not introduce fresh air, closes new
Wind turbine.The fresh air introduced at new wind turbine is entered with common extraneous interface by the processed air such as filtration drying dedusting
Fresh air compares, and air muddiness, humidity in case will not be led to problems such as to increase.
On this basis, increase the control to gas concentration.Control flow in system shown in the present invention can be referring specifically to
Shown in Fig. 5.The control in existing control mode to gas concentration is different from there is only pressure air draft and stops two kinds of air draft operation
State can be controlled further with other environmental Kuznets Curves, such as micro-positive pressure in of the invention when SF6 gas concentrations are without departing from preset value
It is combined.In particular, during the control of combination shown in Fig. 5, air draft operation can also integrate internal and external environment factor, more by other
Kind control purpose triggering.For example, in order to meet the purpose of Temperature and Humidity Control in case, gas exchanges are promoted by quick air draft, are drawn
Enter external more suitable humiture state, reduce the load of air-conditioning or dehumidifying, and then meets energy-saving purpose.That is,
The control model passively run is increased in existing control.By taking the temperature inside the box is higher than box outside temperature as an example, passive air draft pattern,
Temperature is reduced using compressor to reduce temperature ratio by introducing fresh air supply way, to energy saving.It is not at this time because interior
The toxic reason of portion's gas, but for the purpose of Temperature and Humidity Control, at this time referred to as passive air draft pattern.
For existing system, operation of air conditioner control usually is carried out by detecting data of the Temperature and Humidity module, and for the present invention,
Air draft process can discharge humiture in case, then realize the control of humiture outside fresh air supply way leading-in box by way of air drawing
System.This is because introducing external fresh air, the control of humiture in case can be impacted, the temperature inside the box is made more to level off to the outer temperature of case
Degree.The present invention rationally utilizes this characteristic, can reduce the opening time of air-conditioning device, to energy saving.
Specifically, by taking environmental control system in case need to realize pressure air draft, refrigerated dehumidification as an example.Each control of the present invention
Dynamic between state redirects situation and can be found in Fig. 6.First by the baroceptor, gas concentration sensor, warm and humid in system
It spends sensor and carries out data monitoring inside and outside case, according to environmental demand in case, to the air pressure difference of the internal and external environment detected, six
Sulfur fluoride gas, oxygen content, the data of humiture carry out pressure difference trend discrimination by combining control logic algorithm inside and outside case,
With safely for target, on the basis of realizing environment micro-positive pressure in case, sulfur hexafluoride gas content be less than safety value in guard box,
Output control signal is controlled by constant temperature and humidity, in communication connectivity or the mode of directly point connection controls air-conditioning, removes
Wet machine, heater, exhaust blower, air inlet fan etc., to realize the control to security context in case and adjusting, to reach humiture in case
Constant demand：
T1：Firstly the need of it is confirmed that air draft operating condition, when SF6 data monitorings are exceeded, it is necessary to force output control
Air draft is run, at this time must enforced opening exhaust blower with the decline of toxic object content in guard box.And when data monitoring meets
When standard, then it can determine closing exhaust blower according to subsequent logic or exhaust blower can be opened, stop air draft mould to enter
Formula or passive air draft pattern.
T2：It determines micro-positive pressure control model, practical micro-positive pressure data and its variation tendency is calculated according to inner and outer air pressure, are judged
The pattern of fresh air operation, as to whether needing to open new wind turbine, and is specifically turned on and off the quantity of new wind turbine, then needs
Wait for the determination of last Temperature and Humidity Control pattern.
T3：Temperature and Humidity Control pattern in case is specified, according to Temperature and Humidity Control pattern above-mentioned, determines Temperature and Humidity Control pattern
Afterwards, it does not directly drive according to common Temperature and Humidity Control pattern and is run with the relevant component of humiture, but enter in next step.
T4：According to data of the Temperature and Humidity module outside the case detected, by being relatively to determine by the data of the Temperature and Humidity module in itself and case
The no humiture by the way of introducing fresh air outside leading-in box, to realize the control to humiture in case.Thus it reduces corresponding
Air-conditioning or heating combined equipment run time, therefore, control technique provided by the present invention is more energy saving.
T5：In summary, current state of a control, driving corresponding component operation are determined.
As a result, when needing to force air draft, and having refrigerated dehumidification demand in case, fresh air pattern is first determined whether, with fuzzy new
For wind pattern.In such a mode, further according to the outer humiture situation judgement of the case detected：When box outside temperature is less than in case
Humidity is less than in case under humidity condition outside temperature and case, and is detected at this time according to micro-positive pressure sensor, judges inside and outside differential pressure trend
It is the case where reduction.Judge to reduce the temperature inside the box and humidity by opening new fan operation as a result, without opening air-conditioning
Refrigerating operaton and dehumidifier dehumidifying operation.The external environment humiture brought due to new wind turbine can humiture be extremely in automatic control stuff box
Close to the state of setting value, system can reduce the operation of air-conditioning equipment or dehumidifier, thus reduce energy consumption, and energy simultaneously
Enough meets the needs of environmental Kuznets Curves in case.When new fan operation leads to that micro-positive pressure pressure difference gradually increases inside and outside case, pass through correlation
The detection of sensor further jumps to the state of exhaust blower operation, air conditioner refrigerating, dehumidifier operation, to maintain current environment.
Redirecting for other states is similar therewith, is not added with repeats herein.
It is mainly reflected in the advantages of technical solution of the present invention as a result,：Environment control in the case detected in conjunction with micro-positive pressure and SF6
System, by control unit by the data of baroceptor, gas concentration sensor, temperature sensor and humidity sensor, to inspection
The inner and outer air pressure power that measures, SF6 gas contents, inside and outside case humiture data, carry out integrated treatment, control relevant apparatus is adjusted
Environment in case.The present invention makes full use of case external environment in adjustment process, with safely for target, micro-positive pressure is same in realization case
When guard box in sulfur hexafluoride gas content be less than safety value.In particular, the present invention in external environment more close to setting value when, can
Directly by fresh air system and air exhausting device, by external humiture leading-in box, to save the energy consumption of the equipment such as air-conditioning.The present invention
When maintaining micro-positive pressure in case, internal and external environment pressure difference trend is also further differentiated, it is more accurate to the adjusting of air pressure in case, it can
Meets the needs of power industry equipment is to detection environment.
One of ordinary skill in the art will appreciate that：The foregoing is only a preferred embodiment of the present invention, and does not have to
In the limitation present invention, although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art
For, still can to foregoing embodiments record technical solution modify, or to which part technical characteristic into
Row equivalent replacement.All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should all include
Within protection scope of the present invention.
Claims (8)
1. environment control method in a kind of combination micro-positive pressure and the case of SF6 detections, which is characterized in that step includes：
The first step, SF6 gas concentrations in detection case open row when SF6 gas concentrations exceed SF6 concentration preset values in the case
Wind apparatus；When in the case SF6 gas concentrations without departing from SF6 concentration preset values when close air exhausting device；
Second step, the inside and outside air pressure of detection case, when air pressure positive pressure is not up to micro-positive pressure preset range compared to air pressure outside case in the case
When, open aeration device；When air pressure positive pressure is more than micro-positive pressure preset range compared to air pressure outside case in the case, fresh air dress is closed
It sets；When air pressure positive pressure is in compared to air pressure outside case in micro-positive pressure preset range in the case, further judge that air pressure becomes in case
Change amount：When air pressure reduces in case, increase aeration device open amount；When air pressure increases in case, aeration device open amount is reduced；
When air pressure is constant in case, aeration device open amount is maintained；
Third walks, the inside and outside temperature of detection case, the inside and outside humidity of detection case, if box outside temperature or humidity are closer to temperature preset value
Or humidity preset value, then open air exhausting device and the aeration device；If the temperature inside the box or humidity are default closer to temperature
Value or humidity preset value, then close air exhausting device；And temperature tune is accordingly controlled according to the temperature preset value or humidity preset value
Regulating device or humidity control apparatus adjust the temperature inside the box or humidity to the temperature preset value or humidity preset value.
2. as described in claim 1 in conjunction with environment control method in micro-positive pressure and the case of SF6 detections, which is characterized in that described
The inside and outside air pressure of case is detected by baroceptor respectively, and detecting step includes：
The air pressure interface of the baroceptor is connected to the position of stable gas pressure and case in case by step S1 by plastics respectively
The position of outer stable gas pressure obtains air pressure signal and the outer air pressure signal of case in the case of the baroceptor detection respectively；
Step S2, air pressure signal outside air pressure signal and case in the case detected to the baroceptor by two-way RC circuits respectively
It is filtered；
Filtered signal is converted in case barometric information outside barometric information and case, detected respectively in the case by step S3
Barometric information and the outer barometric information of case.
3. environmental control system in a kind of combination micro-positive pressure and the case of SF6 detections, including gas concentration sensor, air pressure sensing
Device, air exhausting device, aeration device and control unit, described control unit connect the gas concentration sensor, baroceptor,
Air exhausting device and aeration device, which is characterized in that described control unit is used for：
Read gas concentration in the case of gas concentration sensor detection, when in the case gas concentration beyond or below gas
Air exhausting device is opened when concentration preset value；
The inside and outside air pressure of case for reading the baroceptor detection, when air pressure positive pressure is not up to compared to air pressure outside case in the case
When micro-positive pressure preset range, aeration device is opened；When air pressure positive pressure presets model compared to air pressure outside case more than micro-positive pressure in the case
When enclosing, aeration device is closed；When air pressure positive pressure is in compared to air pressure outside case in micro-positive pressure preset range in the case, further
Judge air pressure change amount in case：When air pressure reduces in case, increase aeration device open amount；When air pressure increases in case, reduce
Aeration device open amount；When air pressure is constant in case, aeration device open amount is maintained.
4. as claimed in claim 3 in conjunction with environmental control system in micro-positive pressure and the case of SF6 detections, which is characterized in that described
Gas concentration sensor includes SF6 gas concentration sensors and/or oxygen gas concentration sensor.
5. as claimed in claim 4 in conjunction with environmental control system in micro-positive pressure and the case of SF6 detections, which is characterized in that described
Aeration device quantity is at least three, and/or, the aeration device gear is at least 3 gears；
The aeration device open amount includes the quantity and/or gear that the aeration device is opened.
6. the combination micro-positive pressure and environmental control system in the case of SF6 detections, feature as described in claim 3 to 5 is any exist
In the baroceptor includes at least two air pressure interfaces and at least three signal output end；
Described two air pressure interfaces are connected to the position of stable gas pressure outside the position of stable gas pressure and case in case by plastics respectively,
Air pressure signal and the outer air pressure signal of case in the case of the baroceptor detection are obtained respectively；
One signal output end of the baroceptor connects common level, the another two signal output of the baroceptor
End is separately connected two RC filter circuits, and described two RC filter circuits parameters are identical, the output of described two RC filter circuits
End is separately connected described control unit, and the filtered electric signal of RC filter circuits is converted to gas in case by described control unit
Data and the outer barometric information of case are pressed, obtain barometric information and the outer barometric information of case in the case respectively.
7. the combination micro-positive pressure as described in claim 3 to 6 and environmental control system in the case of SF6 detections, which is characterized in that also
Including temperature sensor, air-conditioning or electric calorifie installation, it is single that the temperature sensor, air-conditioning or electric calorifie installation are separately connected the control
Member；
Described control unit is additionally operable to：
The inside and outside temperature of case of temperature sensor detection is read, if box outside temperature is closer to temperature preset value, the row of unlatching
Wind apparatus and the aeration device；If the temperature inside the box closes air exhausting device closer to temperature preset value, and, according to institute
It states temperature preset value and controls the air-conditioning or electric calorifie installation, adjust the temperature inside the box to the temperature preset value.
8. as claimed in claim 3 in conjunction with environmental control system in micro-positive pressure and the case of SF6 detections, which is characterized in that also wrap
Humidity sensor and dehumidification device are included, the humidity sensor and dehumidification device are separately connected described control unit；
Described control unit is additionally operable to：
The inside and outside humidity of case of humidity sensor detection is read, if the outer humidity of case is closer to humidity preset value, the row of unlatching
Wind apparatus and the aeration device；If humidity closes air exhausting device closer to humidity preset value in case, and, according to institute
It states humidity preset value and controls the dehumidification device, humidity is to the humidity preset value in regulating box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810585685.9A CN108628370A (en) | 2018-06-08 | 2018-06-08 | Environment control method and system in the case detected in conjunction with micro-positive pressure and SF6 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810585685.9A CN108628370A (en) | 2018-06-08 | 2018-06-08 | Environment control method and system in the case detected in conjunction with micro-positive pressure and SF6 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108628370A true CN108628370A (en) | 2018-10-09 |
Family
ID=63691439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810585685.9A Pending CN108628370A (en) | 2018-06-08 | 2018-06-08 | Environment control method and system in the case detected in conjunction with micro-positive pressure and SF6 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108628370A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110474004A (en) * | 2019-08-19 | 2019-11-19 | 潍坊工程职业学院 | A kind of power accumulator cabinet positive air pressure maintenance system and method |
| CN112835397A (en) * | 2021-01-04 | 2021-05-25 | 中车青岛四方车辆研究所有限公司 | Box body sealing state monitoring and evaluating method and monitoring system |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102679467A (en) * | 2011-03-14 | 2012-09-19 | 石家庄奥祥医药工程有限公司 | Air-conditioner ventilating system for pretreatment workshop for dairy product production |
| CN202709393U (en) * | 2012-08-16 | 2013-01-30 | 温州市创力电子有限公司 | Smart energy-saving air refreshing system for machine room |
| CN104635778A (en) * | 2015-01-12 | 2015-05-20 | 国家电网公司 | Method for maintaining indoor micro-positive pressure control of transformer substation |
| CN204648576U (en) * | 2015-05-15 | 2015-09-16 | 苏州市远帆电器有限公司 | A kind of unattended operation transformer station VMC device |
| CN104993399A (en) * | 2015-04-24 | 2015-10-21 | 新疆华隆油田科技股份有限公司 | Box type switching station |
| US20160069575A1 (en) * | 2014-09-08 | 2016-03-10 | United Maintenance, Inc. | Natatorium dehumidifier |
| WO2016038908A1 (en) * | 2014-09-09 | 2016-03-17 | 株式会社日立製作所 | Gas leak detection device and gas leak inspection method |
| CN206257781U (en) * | 2016-09-26 | 2017-06-16 | 苏州天弘益华机电有限公司 | A kind of laboratory multistage ventilated energy-saving control system |
| CN206506197U (en) * | 2017-02-17 | 2017-09-19 | 国网冀北节能服务有限公司 | A kind of box-type substation for the radiating that is self-regulated |
-
2018
- 2018-06-08 CN CN201810585685.9A patent/CN108628370A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102679467A (en) * | 2011-03-14 | 2012-09-19 | 石家庄奥祥医药工程有限公司 | Air-conditioner ventilating system for pretreatment workshop for dairy product production |
| CN202709393U (en) * | 2012-08-16 | 2013-01-30 | 温州市创力电子有限公司 | Smart energy-saving air refreshing system for machine room |
| US20160069575A1 (en) * | 2014-09-08 | 2016-03-10 | United Maintenance, Inc. | Natatorium dehumidifier |
| WO2016038908A1 (en) * | 2014-09-09 | 2016-03-17 | 株式会社日立製作所 | Gas leak detection device and gas leak inspection method |
| CN104635778A (en) * | 2015-01-12 | 2015-05-20 | 国家电网公司 | Method for maintaining indoor micro-positive pressure control of transformer substation |
| CN104993399A (en) * | 2015-04-24 | 2015-10-21 | 新疆华隆油田科技股份有限公司 | Box type switching station |
| CN204648576U (en) * | 2015-05-15 | 2015-09-16 | 苏州市远帆电器有限公司 | A kind of unattended operation transformer station VMC device |
| CN206257781U (en) * | 2016-09-26 | 2017-06-16 | 苏州天弘益华机电有限公司 | A kind of laboratory multistage ventilated energy-saving control system |
| CN206506197U (en) * | 2017-02-17 | 2017-09-19 | 国网冀北节能服务有限公司 | A kind of box-type substation for the radiating that is self-regulated |
Non-Patent Citations (2)
| Title |
|---|
| 吴相甫等: "气候环境实验室新风系统控制方法研究", 控制工程, vol. 24, no. 0, pages 30 - 35 * |
| 郭盛等: "基于综合环境控制的室内变电站通风方式", 北京交通大学学报, no. 03, pages 23 - 30 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110474004A (en) * | 2019-08-19 | 2019-11-19 | 潍坊工程职业学院 | A kind of power accumulator cabinet positive air pressure maintenance system and method |
| CN112835397A (en) * | 2021-01-04 | 2021-05-25 | 中车青岛四方车辆研究所有限公司 | Box body sealing state monitoring and evaluating method and monitoring system |
| CN112835397B (en) * | 2021-01-04 | 2022-01-28 | 中车青岛四方车辆研究所有限公司 | Box body sealing state monitoring and evaluating method and monitoring system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104896682B (en) | Warm and humid double-cotrolled type multiple on-line system and its control method | |
| CN105091440B (en) | The control method and device of electric expansion valve | |
| CN106989476A (en) | Air quantity control method, device and the central air-conditioning of central air-conditioning | |
| CN107477803A (en) | Air conditioner and its control method, device | |
| CN108628370A (en) | Environment control method and system in the case detected in conjunction with micro-positive pressure and SF6 | |
| CN103398570B (en) | The method that equipment dehumidifies, condensation detection device and equipment | |
| CN106152411A (en) | The temperature/humidity control method of air-conditioner and device | |
| CN106871388A (en) | The energy-saving control method and device of outdoor unit in air-conditioner and air-conditioner | |
| CN109764493A (en) | Air conditioner and its control method and computer readable storage medium | |
| CN107421079A (en) | Air conditioner and its control method, device | |
| CN108302726A (en) | A kind of laboratory multistage ventilated energy-saving control system | |
| CN107461999A (en) | A kind of control method and device of drying plant | |
| CN106322685A (en) | Control method for constant temperature dehumidification of air conditioner and air conditioner | |
| CN113513804A (en) | Air treatment apparatus, control method thereof, and computer-readable storage medium | |
| CN109210875A (en) | A kind of control system for humiture of drying rooms and method using heat pump drying | |
| CN105157187B (en) | A kind of base station thermal source intelligent management energy conserving system | |
| CN106403524A (en) | Energy-saving hot freon drying and dehumidification system and control method thereof | |
| CN111555149B (en) | Block terminal based on intelligent monitoring | |
| CN108445925A (en) | Electric panel room dehumidification system | |
| CN108800464A (en) | Energy-saving control method, device and the air-conditioning of air-conditioning | |
| CN116839185A (en) | Air conditioner temperature regulation and control method and system | |
| CN208061037U (en) | Electric panel room dehumidification system | |
| CN111023337A (en) | Purification control method of fan | |
| CN205161018U (en) | Regulator cubicle temperature humidity control system | |
| CN113513805B (en) | Air treatment apparatus, control method thereof, and computer-readable storage medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| AD01 | Patent right deemed abandoned |
Effective date of abandoning: 20240816 |