CN104214911B - Control method of compound PLC (programmable logic controller) air conditioning automatic control system in textile mill - Google Patents
Control method of compound PLC (programmable logic controller) air conditioning automatic control system in textile mill Download PDFInfo
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- CN104214911B CN104214911B CN201410465112.4A CN201410465112A CN104214911B CN 104214911 B CN104214911 B CN 104214911B CN 201410465112 A CN201410465112 A CN 201410465112A CN 104214911 B CN104214911 B CN 104214911B
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Abstract
The invention discloses a control method of a compound PLC (programmable logic controller) air conditioning automatic control system in a textile mill. The method is based on the compound PLC air conditioning automatic system in the textile mill; adjustment is performed by taking the humidity of shop air as a primary object according to a principle of humidity priority; according to a principle of 'increasing low and reducing high' adjustment is performed by sequentially increasing the frequency of equipment with low power consumption to meet production requirements when the humidity of the shop air is lower than a set standard, and adjustment is performed by sequentially reducing the frequency of equipment with high consumption to meet the production requirements when the shop humidity is higher than a set standard. The control method of the compound PLC air conditioning automatic control system in the textile mill further reduces the operation energy consumption of an air conditioning system on the basis that temperature and humidity requirements of a production shop are met, solves the problems of hysteresis quality and high energy consumption of the existing control method, guarantees production technological requirements of the shop, greatly reduces the operation energy consumption of the air conditioning system, and achieves the purposes of high efficiency and energy conservation.
Description
Technical field
The invention belongs to air for air conditioning in textile factories control method field is and in particular to a kind of textile mills combined type PLC air-conditioning is automatic
The control method of control system.
Background technology
Current textile mills' PLC automatic control system of air conditioner can only in limited scope according to actual production conditions to wind
Unit frequency and water pump frequency make corresponding adjustment, but this adjustment haves the characteristics that certain hysteresis quality and high energy consumption, so,
Existing textile mills PLC automatic control system of air conditioner is extremely difficult to energy-efficient purpose.
Content of the invention
It is an object of the invention to provide a kind of control method of textile mills combined type PLC automatic control system of air conditioner, solution
There is hysteresis quality and high energy consumption in existing control method of having determined.
The technical solution adopted in the present invention is：The control method of textile mills' combined type PLC automatic control system of air conditioner, base
In textile mills' combined type PLC automatic control system of air conditioner, according to " humidity priority " principle, using the humidity of workshop air as primary
Object is adjusted；According to " increasing little subtracting greatly " principle, when the humidity of workshop air is less than the standard setting, by increasing successively
Power consumption is adjusted meeting Production requirement compared with the frequency of skinny device, when workshop humidity be higher than set standard when, by according to
The secondary frequency reducing the larger equipment of power consumption is adjusted meeting Production requirement.
The feature of the present invention also resides in,
Textile mills' combined type PLC automatic control system of air conditioner is set as that three kinds of different operating modes carry out there is pin to air conditioning system
Regulation to property：
(1) during summer condition, spray chamber is processed to air using two-stage spray, and the first order is water circulating pump, and second
Level adopts chilled water pump；According to " humidity priority " principle using the humidity in workshop as the primary control object of control loop, work as car
Between actual humidity when being less than setting value, adjust the ascending equipment of operation energy consumption successively, first increase water capacity in wind mixed chamber
The air quantity of larger wind, the frequency increasing water circulating pump frequency again, finally increasing breeze fan；Conversely, working as workshop actual humidity
More than adjusting operation energy consumption descending equipment during setting value successively, that is, it is sequentially reduced breeze fan frequency, recirculated water pumping frequency
The air quantity of the larger wind of water capacity in rate and wind mixed chamber；
Secondly, for the control of workshop temperature, control the temperature in workshop by controlling chilled water pump, when workshop temperature is low
When the temperature setting, then chilled water pump is out of service, allows workshop temperature naturally be warmed up to setting value, new as necessary by adjusting
Air regulator volume damper and return wind transom volume damper are adjusting the ratio of the resh air requirement in wind mixed chamber and return air amount；When workshop temperature
When degree is higher than the temperature setting, then chilled water pump is opened, and when workshop temperature reaches design temperature, chilled water pump stops fortune
OK；
(2) during transition season operating mode, control route with reference to summer condition, close the inlet valve of chilled water pump, using following
Ring water pump and chilled water pump spray process air；Control for humidity：When workshop actual humidity is less than and sets humidity, successively
Increase the larger frequency of the air quantity of wind, increase water circulating pump and chilled water pump of mixing wind water capacity in wind mixed chamber, increase air-supply
Blower fan frequency, makes workshop humidity be increased up the scope setting；When workshop humidity is higher than setting value, it is sequentially reduced breeze fan frequency
In the frequency of rate, water circulating pump and chilled water pump, reduction wind mixed chamber, the air quantity of the larger wind of mixing wind water capacity, makes workshop humidity
Reach setting value；
On the basis of meeting humidity requirement, then temperature is adjusted：When workshop temperature is higher than design temperature, then open
New greatly air regulator volume damper makes fresh-air volume be gradually increased, and turning down return wind transom volume damper makes return air air quantity gradually decrease,
Till reaching workshop design temperature, but if new air regulator volume damper is opened to maximum still can not meet wanting
Ask, then increase frequency, the frequency of breeze fan of water circulating pump and chilled water pump successively, until temperature reaches requirement；Work as workshop
When temperature is less than design temperature, then turning down new air regulator volume damper makes fresh-air volume gradually decrease, and opens big return wind transom air quantity and adjusts
Section valve makes return air air quantity be gradually increased, till reaching workshop design temperature, but if opening in return wind transom volume damper
Degree increases to 90%, and the aperture of new air regulator volume damper still can not meet requirement in the case of being decreased to 10%, then reduce successively
The frequency of the frequency of breeze fan, reduction water circulating pump and chilled water pump, until temperature reaches requirement；
(3) during winter condition, close the freezing penstock of chilled water pump, processed using water circulating pump and chilled water pump empty
Gas；For the control of workshop moisture temperature, according to the principle of " humidity priority " and " increasing little subtracting greatly "：When in workshop, humidity is less than setting
During value, first increase the air quantity of the larger wind of water capacity in wind mixed chamber, increase the recirculated water of spray chamber if can not meeting requirement
The frequency of pump, until water circulating pump frequency reaches maximum rating, if being not met by requiring, is increased by breeze fan frequency straight
Reach requirement to workshop humidity；When workshop humidity is higher than setting value, just reduce the frequency of breeze fan and water circulating pump successively,
Maximally utilize the regulation to resh air requirement in wind mixed chamber and return air amount ratio；For temperature control also in humidity regulation
On the basis of carry out, when workshop temperature is less than setting value, in addition to increasing the air quantity of return air in wind mixed chamber, be also usually used
The mode of auxiliary heating heats to wind mixed chamber's air, thus raising workshop temperature；It is higher than design temperature for workshop temperature
When operating mode, disregard.
Textile mills' combined type PLC automatic air conditionning includes return airway, and return airway connects return air by return air fan
Room, return air chamber connects wind mixed chamber, is provided with return wind transom between return air chamber and wind mixed chamber, and wind mixed chamber side connects new air compartment, another
Side connects spray chamber, and new air compartment is provided with new air regulator, and spray chamber connects plenum chamber, and plenum chamber connects air-supply wind by breeze fan
Road, return air fan, return wind transom, spray chamber, new air regulator, breeze fan are all connected with PLC.
Return airway is connected with workshop respectively with supply air duct, is provided with workshop humidity tester and workshop temperature in workshop
Tester, workshop humidity tester is all connected with PLC with workshop temperature tester.
It is provided between wind mixed chamber and spray chamber and mix wind defecator.
It is provided between mixing wind defecator and spray chamber and mixes wind humidity tester and mixing air temperature tester, mix
Close wind humidity tester to be all connected with PLC with mixing air temperature tester.
New air compartment is additionally provided with fresh air humidity tester and fresh air temperature measuring device, fresh air humidity tester and new air temperature
The uniform PLC of tester is connected.
Spray chamber is connected to water circulating pump and chilled water pump, and water circulating pump passes through water circulating pump converter to be controlled with PLC
Device processed is connected, and chilled water pump is connected with PLC by chilled water pump converter.
It is provided with setting between return air fan converter, return wind transom and PLC between return air fan and PLC
Have between return wind transom volume damper, new air regulator and PLC and be provided with new air regulator volume damper, breeze fan and PLC
It is provided with breeze fan converter between controller.
The invention has the beneficial effects as follows：The control method of textile mills of the present invention combined type PLC automatic control system of air conditioner, one
Aspect is directed to textile mills workshop in Various Seasonal to air conditioning system demand difference, and arranges multi-state and run control route to meet
In actual production process, efficient control requires；On the other hand " humidity priority " principle and the control of " increasing little subtracting greatly " principle are used
Mode, on the basis of the temperature and humidity meeting workshop requires, reduces the energy consumption that air conditioning system is run further, solves
There is hysteresis quality and high energy consumption it is ensured that the manufacturing technique requirent in workshop in existing control method, greatly reduce sky
The energy consumption that adjusting system runs, reaches energy-efficient purpose.
Brief description
The structural representation of Tu1Shi textile mills combined type PLC automatic control system of air conditioner；
The summer control flow chart of the control method of Tu2Shi textile mills of the present invention combined type PLC automatic control system of air conditioner；
The excessive season controlling stream of the control method of Tu3Shi textile mills of the present invention combined type PLC automatic control system of air conditioner
Cheng Tu；
The winter control flow chart of the control method of Tu4Shi textile mills of the present invention combined type PLC automatic control system of air conditioner.
In figure, 1. return air chamber, 2. return air fan, 3. return airway, 4. new air compartment, 5. wind mixed chamber, 6. plenum chamber, 7. blow
Blower fan, 8. supply air duct, 9. water circulating pump, 10. chilled water pump, 11. return wind transom volume dampers, 12. new air regulator air quantity are adjusted
Valve, 13. water circulating pump converters, 14. chilled water pump converters, 15. new air regulators, 16. return wind transoms, 17. mixing wind defecators,
18. breeze fan converters, 19. return air fan converters, 20. fresh air temperature measuring devices, 21. fresh air humidity testers, 22. mix
Close air temperature tester, 23. mixing wind humidity testers, 24. workshop temperature testers, 25. workshop humidity testers, 26. sprays
Drench room, 27.PLC controller.
Specific embodiment
The present invention is described in detail with reference to the accompanying drawings and detailed description.
The control method of textile mills of the present invention combined type PLC automatic control system of air conditioner, empty based on textile mills' combined type PLC
Adjust automatic control system, as shown in figure 1, including return airway 3, return airway 3 connects return air chamber 1, return air by return air fan 2
Room 1 connects wind mixed chamber 5, is provided with return wind transom 16 between return air chamber 1 and wind mixed chamber 5, and wind mixed chamber 5 side connects new air compartment 4, another
Side connects spray chamber 26, is provided with and mix wind defecator 17 between wind mixed chamber 5 and spray chamber 26, mixing wind defecator 17 and
It is provided with mixing wind humidity tester 23 and mixing air temperature tester 22 between spray chamber 26, mix wind humidity tester 23 He
Mixing air temperature tester 22 is all connected with PLC 27, and new air compartment 4 is provided with new air regulator 15, and spray chamber 26 connects air-supply
Room 6, plenum chamber 6 connects supply air duct 8 by breeze fan 7, return air fan 2, return wind transom 16, spray chamber 26, new air regulator 15, send
Wind blower fan 7 is all connected with PLC 27；Return airway 3 is connected with workshop respectively with supply air duct 8, is provided with car in workshop
Between humidity tester 25 and workshop temperature tester 24, workshop humidity tester 25 and workshop temperature tester 24 are all controlled with PLC
Device 27 processed is connected；
New air compartment 4 is additionally provided with fresh air humidity tester 21 and fresh air temperature measuring device 20, fresh air humidity tester 21 He
The uniform PLC 27 of fresh air temperature measuring device 20 is connected；
Spray chamber 26 is connected to water circulating pump 9 and chilled water pump 10, and water circulating pump 9 passes through water circulating pump converter 13
It is connected with PLC 27, chilled water pump 10 is connected with PLC 27 by chilled water pump converter 14；
It is provided with return air fan converter 19, return wind transom 16 and PLC between return air fan 2 and PLC 27
It is provided between 27 between return wind transom volume damper 11, new air regulator 15 and PLC 27 and be provided with new air regulator air quantity regulation
It is provided with breeze fan converter 18 between valve 12, breeze fan 7 and PLC 27.
The control method of textile mills' combined type PLC automatic control system of air conditioner, according to " humidity priority " principle, workshop is empty
Gas water capacity is adjusted as primary object；According to " increasing little subtracting greatly " principle, when the humidity of workshop air is less than the mark setting
On time, it is adjusted meeting Production requirement compared with the frequency of skinny device by increasing power consumption successively, when workshop humidity is higher than to set
During fixed standard, it is adjusted meeting Production requirement by the frequency being sequentially reduced the larger equipment of power consumption.
PLC automatic control system of air conditioner is set as that three kinds of different operating modes are targetedly adjusted to air conditioning system：
The concrete number of the temperature and humidity meeting workshop difference duty requirements air is set in PLC 27
Value, fresh air temperature measuring device 20 and fresh air humidity tester 21 measure the temperature and humidity of outdoor fresh air respectively；Mixing air temperature
Tester 22 and mixing wind humidity tester 23 measure fresh air and the temperature and humidity mixing wind of return air composition；Workshop temperature is surveyed
Try instrument 24 and workshop humidity tester 25 measures humidity and the temperature of workshop respectively；The instant data collected is changed into
Result, by input interface, is transformed into executable signal through PLC 27 and passes through to adjust fresh air by fiduciary level signal
Window volume damper 12 controls the aperture of new air regulator 15, regulation return wind transom volume damper 11 to control the aperture of return wind transom 16, tune
Section breeze fan converter 18 controls the frequency of breeze fan 7, adjusts the frequency that return air fan converter 19 controls return air fan 2
Rate, the frequency adjusting water circulating pump converter 13 control water circulating pump 9, regulation chilled water pump converter 14 control chilled water pump 10
Frequency.
(1) as shown in Fig. 2 during summer condition, spray chamber 26 is processed to air using two-stage spray, the first order is to follow
Ring water pump 9, the second level adopts chilled water pump 10.Will be primary as control loop for the humidity in workshop according to " humidity priority " principle
Control object, controls the mode of workshop humidity to have three kinds, adjusts fresh air and return air in wind mixed chamber 5 respectively by PLC 27
Ratio, adjust the frequency of water circulating pump 9 frequency and breeze fan 7；Control circuit deviates according to workshop actual humidity and sets
Determine direction and the degree of humidity, control route can be divided into two kinds：A kind of is that the actual humidity that workshop humidity tester 25 measures is little
In setting value；Another is that the actual humidity that workshop humidity tester 25 measures is more than setting value.Former in conjunction with " increasing little subtracting greatly "
Then, when workshop actual humidity is less than setting value, in order to increase the humidity in workshop, need water capacity in increase wind mixed chamber 5 larger
The air quantity of wind, increase the frequency of water circulating pump 9, increase the frequency of breeze fan 7, need to adjust successively operation energy consumption by little to
Big equipment, first increases the air quantity of the larger wind of water capacity in wind mixed chamber 5, increases water circulating pump 9 frequency again, finally increases and send
The frequency of wind blower fan 7；Conversely, adjusting the descending equipment of operation energy consumption successively when workshop actual humidity is more than setting value,
Be sequentially reduced breeze fan 7 frequency, water circulating pump 9 frequency, in wind mixed chamber 5 the larger wind of water capacity air quantity；
Secondly, for the control of workshop temperature, due to the coupled relation of temperature and humidity, so the regulation to temperature will be tied
The regulation closing humidity is carried out, and when adjusting workshop humidity, workshop temperature also can increase with humidity and reduce, and humidity reduces and rises
Height, thus when humidity meets Production requirement then needs workshop is carried out etc. wet heat up or lower the temperature, water circulating pump 9 is used for humidifying
Air, chilled water pump 10 carries out dehumidifying and cooling to air.It is than workshop air in summer outdoor fresh air enthalpy in most time
Enthalpy is big.The regulative mode being therefore mainly responsible for control workshop temperature in summer is the operation work by controlling chilled water pump 10
Condition controlling the temperature in workshop, when the workshop temperature that workshop temperature tester 24 measures is less than the temperature setting, then chilled water
Pump 10 is out of service, allows workshop temperature naturally be warmed up to setting value, as necessary by adjusting new air regulator volume damper 12 and return
Air regulator volume damper 11 is adjusting the ratio of the resh air requirement in wind mixed chamber 5 and return air amount；When workshop temperature tester 24 measures
Workshop temperature be higher than set temperature when, then chilled water pump 10 is opened, in the state of frequency is for 25Hz run, until workshop
When temperature reaches design temperature, chilled water pump 10 is out of service；
(2) as shown in figure 3, during spring and autumn transition season operating mode, controlling route with reference to summer condition, close chilled water pump 10
Chilled water inlet valve, using water circulating pump 9 and chilled water pump 10 spray process air.First, humidity is controlled：When
The workshop actual humidity of workshop humidity tester 25 mensure is less than when setting humidity, increases successively and mixes wind in wind mixed chamber 5 containing wet
Measure the frequency of the larger air quantity of wind, increase water circulating pump 9 and chilled water pump 10, increase breeze fan 7 frequency, make workshop humidity
It is increased up the scope setting；When the workshop humidity that workshop humidity tester 25 measures is higher than setting value, it is sequentially reduced air-supply
The wind of the larger wind of mixing wind water capacity in the frequency of blower fan 7 frequency, water circulating pump 9 and chilled water pump 10, reduction wind mixed chamber 5
Amount, makes workshop humidity reach setting value；
On the basis of meeting humidity requirement, then temperature is adjusted：The temperature measuring when workshop temperature tester 24
During higher than design temperature, then opening new greatly air regulator volume damper 12 makes fresh-air volume be gradually increased, and turns down return wind transom air quantity and adjusts
Valve 11 makes return air air quantity gradually decrease, till reaching workshop design temperature, but if new air regulator volume damper 12 open to
Requirement still can not be met in the case of maximum, then increase the frequency of water circulating pump 9 and chilled water pump 10, breeze fan 7 successively
Frequency, until temperature reaches requirement；When the temperature that workshop temperature tester 24 measures is less than design temperature, then turn down new air regulator
Volume damper 12 makes fresh-air volume gradually decrease, and opening big return wind transom volume damper 11 makes return air air quantity be gradually increased, until
Till reaching workshop design temperature, but if the aperture in return wind transom volume damper 11 increases to 90%, new air regulator air quantity is adjusted
The aperture of valve 12 still can not meet requirement in the case of being decreased to 10%, then reduce the frequency of breeze fan 7 successively, reduce circulation
Water pump 9 and the frequency of chilled water pump 10, until temperature reaches requirement；
(3) as shown in figure 4, during winter condition, closing the freezing penstock of chilled water pump 10, using water circulating pump 9 and cold
Freeze water pump 10 and process air.For the control of workshop moisture temperature, according to the principle of " humidity priority " and " increasing little subtracting greatly "：Work as workshop
When the workshop humidity that humidity tester 25 measures is less than setting value, first increase the air quantity of the larger wind of water capacity in wind mixed chamber 5, such as
Fruit can not meet requirement and just increase the water circulating pump 9 of spray chamber 26 and the frequency of chilled water pump 10, until water circulating pump 9 and freezing
Water pump 10 frequency reaches maximum rating, if being not met by requiring, being increased by breeze fan 7 frequency and reaching until workshop humidity
Require；When the workshop humidity that workshop humidity tester 25 measures is higher than setting value, just reduce breeze fan 7, recirculated water successively
Pump 9 and the frequency of chilled water pump 10, maximally utilize the regulation to resh air requirement in wind mixed chamber 5 and return air amount ratio；For temperature
Control, also carry out on the basis of humidity regulation；Outdoor temperature is lower than workshop temperature in the winter time, so, work as car
Between temperature measuring device 24 measure workshop temperature be less than design temperature when, except increase wind mixed chamber 5 in return air air quantity in addition to, also logical
Often wind mixed chamber 5 air is heated, thus raising workshop temperature using the mode of auxiliary heating；For workshop temperature tester
The workshop temperature of 24 mensure is higher than operating mode during design temperature, disregards.
Embodiment
Select certain Workshop air conditioner system the control and regulation of workshop air humiture are described in detail.
Selected workshop actual humidity is less than this operating mode of setting value.First, set workshop relative humidity as 55%, actual wet
Spend and beIt is divided into four humidity ranges, it controls route to be respectively：(1) I.e. workshop is relatively wet
When degree is differed less than 1% with setting value, then air-conditioning equipment of lower a moment keeps original working condition.(2)When relative humidity differs 1%～3% than setting value, then new air regulator 15 every five seconds for example is closed
10%, simultaneously return wind transom 16 every five seconds for example open 10%, in order to ensure a certain amount of resh air requirement, until new air regulator 15 aperture be 10%
Aperture with return wind transom 16 is 90%.During this period, the actual humidity in workshop all can collect one group of data, relative when workshop
Humidity reaches setting value and fluctuates as in the range of 1%, then new air regulator 15 and return wind transom 16 no longer change, and keep eve
Aperture.If return wind transom 16 reaches relative humidity between maximum opening rear car and still can not meet requirement, start water circulating pump 9 and cold
Freeze water pump 10, the low-limit frequency that water circulating pump 9 and chilled water pump 10 are opened is 25Hz, increase 5Hz within every 20 seconds, with new air regulator 15,
Return wind transom 16 adjusts equally, and when the relative humidity satisfaction in workshop requires, the frequency of water circulating pump 9 no longer changes.Work as recirculated water
When the frequency of pump 9 and chilled water pump 10 reaches maximum, the relative humidity in workshop is still unsatisfactory for requiring, then every 20 seconds of breeze fan 7
Increase 5Hz, if relative humidity meets requiring, breeze fan 7 frequency then no longer changes, if requirement can not be met, breeze fan 7
Reach peak frequency.(3)When relative humidity within the range, new air regulator 15 aperture is directly closed
10%, return wind transom 16 reaches maximum, and water circulating pump 9 and chilled water pump 10 increase 5Hz, directly in every 20 seconds on the basis of original simultaneously
Frequency to water circulating pump 9 and chilled water pump 10 is 50Hz, if the actual humidity in workshop still can not meet requirement, wind of blowing
The frequency of machine 7 also increases 5Hz, if the relative humidity in workshop can meet requirement, breeze fan 7 in every 20 seconds on the basis of original
Frequency no longer changes, if requirement can not be met, breeze fan 7 reaches peak frequency.(4)Workshop relative humidity
If in this range section, new air regulator 15 aperture directly closes 10%, and return wind transom 16 reaches maximum, water circulating pump 9 and chilled water pump 10
Frequency is 50Hz, and breeze fan 7 increases 5Hz in every 20 seconds on the basis of original, if the relative humidity in workshop can meet requirement,
Breeze fan 7 frequency keeps constant, if requirement can not be met, till breeze fan 7 reaches the frequency meeting condition.
Control for temperature is carried out on the basis of meeting humid control, and workshop temperature setting value is 28 DEG C, real
Border workshop temperature is t, and the control route of four temperature ranges is：(1) 24 DEG C of ＜ t≤28 DEG C, first can be using regulation wind mixed chamber 5
The ratio of middle resh air requirement and return air amount is adjusting workshop temperature.I.e. workshop temperature be less than outdoor temperature when, mixing wind in temperature relatively
High wind ratio increases gradually, if requirement can not be met, in spray chamber, 26 sections are carried out to mixing wind using ancillary heating equipment
Heat treated.(2) 28 DEG C of ＜ t≤32 DEG C, if workshop temperature reaches this scope, first using change wind mixed chamber 5 fresh air and
The ratio of return air is adjusting workshop temperature.When adjusting fresh air and return air ratio can not meet Production requirement, if outdoor temperature
During higher than workshop temperature, using chilled water pump 10.For chilled water pump 10, if being off state in eve chilled water pump 10,
Then chilled water pump 10 remains in that stopping；If the frequency of eve chilled water pump 10 operating is 25Hz, chilled water pump 10 is direct
Stop, if being greater than 25Hz, reducing 1Hz within every 20 seconds, directly stopping when the frequency of chilled water pump 10 is 25Hz.Work as outdoor
When temperature is less than workshop temperature, close the freezing penstock of chilled water pump 10, use water circulating pump 9 instead and chilled water pump 10 two-stage is followed
Ring Water spray section is used for humidifying processed air, and ruuning situation is with reference to chilled water pump.Workshop temperature is worked as in (3) 32 DEG C of ＜ t≤35 DEG C
When reaching this scope, if what eve chilled water pump 10 was off, start chilled water pump 10 directly to arrive frequency is 25Hz, and
Increase 1Hz within every 20 seconds；If chilled water pump 10 is to run in eve, but frequency is less than 50Hz, then increase 1Hz, directly within every 20 seconds
Meeting requirement or chilled water pump 10 frequency to workshop temperature is 50Hz；If eve chilled water pump 10 running frequency is
50Hz, then the holding of chilled water pump 10 running status is constant, till temperature meets demand.(4) 35 DEG C of t ＞, workshop temperature reaches
During to this scope, no matter whether chilled water pump 10 operates in eve, will start and gradually rise to 50Hz.If still not
Can meet and require, then increase breeze fan 7 frequency further, until meeting temperature requirement.
Compared with the control method of existing textile mills PLC Air-conditioning system, the invention has the beneficial effects as follows：
(1) the control method process for producing workshop condition of textile mills' PLC automatic control system of air conditioner of relatively existing use
The feature of response lag, the different duty requirements to Various Seasonal for the present invention, carry out control specific, that specific aim is stronger and think
Road, can quickly respond to workshop change；
(2) control method of textile mills' PLC automatic control system of air conditioner of more existing use, process for producing workshop ring are compared
Border operation energy consumption is too high, and the present invention, using the control thinking of " humidity priority " and " increasing little subtracting greatly ", can substantially reduce air-conditioning system
The energy consumption that system runs.
Claims (8)
1. the control method of textile mills' combined type PLC automatic control system of air conditioner is it is characterised in that be based on textile mills' combined type
PLC automatic control system of air conditioner, according to " humidity priority " principle, is adjusted the humidity of workshop air as primary object；
According to " increasing little subtracting greatly " principle, when the humidity of workshop air is less than the standard setting, by increasing successively, power consumption is less to be set
Standby frequency is adjusted meeting Production requirement, when workshop humidity is higher than the standard setting, by being sequentially reduced power consumption
The frequency of larger equipment is adjusted meeting Production requirement；
Textile mills' combined type PLC automatic control system of air conditioner is set as that three kinds of different operating modes are carried out targetedly to air conditioning system
Regulation：
(1) during summer condition, spray chamber (26) is processed to air using two-stage spray, and the first order is water circulating pump (9), the
Two grades adopt chilled water pump (10)；According to " humidity priority " principle, the humidity in workshop is right as the primary control of control loop
As when workshop actual humidity is less than setting value, adjusting the ascending equipment of operation energy consumption successively, first increasing wind mixed chamber
(5) the larger air quantity of water capacity, the frequency increasing water circulating pump (9) frequency again, finally increasing breeze fan (7) in；Conversely, working as
Workshop actual humidity adjusts operation energy consumption descending equipment when being more than setting value successively, that is, be sequentially reduced breeze fan (7)
The larger air quantity of water capacity in frequency, water circulating pump (9) frequency and wind mixed chamber (5)；
Secondly, for workshop temperature control, to control workshop temperature by controlling chilled water pump (10), to set when workshop temperature is less than
When constant temperature is spent, then chilled water pump (10) is out of service, allows workshop temperature naturally be warmed up to setting value, as necessary by regulation fresh air
Window volume damper (12) and return wind transom volume damper (11) are adjusting the ratio of resh air requirement and return air amount in wind mixed chamber (5)；
When workshop temperature is higher than the temperature setting, then chilled water pump (10) is opened, when workshop temperature reaches design temperature, freezing
Water pump (10) is out of service；
(2) during transition season operating mode, control route with reference to summer condition, close the inlet valve of chilled water pump (10), using following
Ring water pump (9) and chilled water pump (10) spray process air；Control for humidity：Set humidity when workshop actual humidity is less than
When, increase the larger air quantity of wind of mixing wind water capacity in wind mixed chamber (5) successively, increase water circulating pump (9) and chilled water pump
(10) frequency, increase breeze fan (7) frequency, make workshop humidity increase to set point；When workshop humidity is higher than setting value,
It is sequentially reduced the frequency of breeze fan (7) frequency, water circulating pump (9) and chilled water pump (10), reduce mixing wind in wind mixed chamber (5)
The larger air quantity of water capacity, makes workshop humidity reach setting value；
On the basis of meeting humidity requirement, then temperature is adjusted：When workshop temperature is higher than design temperature, then open new greatly
Air regulator volume damper (12) makes resh air requirement be gradually increased, and turning down return wind transom volume damper (11) makes return air air quantity gradually subtract
Few, till reaching workshop design temperature, but if new air regulator volume damper (12) is opened still can not to maximum
Meet and require, then increase water circulating pump (9) and the frequency of chilled water pump (10), the frequency of breeze fan (7) successively, until temperature
Reach requirement；When workshop temperature is less than design temperature, then turning down new air regulator volume damper (12) makes fresh-air volume gradually subtract
Few, opening big return wind transom volume damper (11) makes return air air quantity be gradually increased, till reaching workshop design temperature, but if
Increase to 90% in the aperture of return wind transom volume damper (11), the aperture of new air regulator volume damper (12) is decreased to 10% feelings
Requirement still can not be met under condition, then reduce the frequency of breeze fan (7) successively, reduce water circulating pump (9) and chilled water pump (10)
Frequency, until temperature reaches requirement；
(3) during winter condition, close the freezing penstock of chilled water pump (10), using water circulating pump (9) and chilled water pump (10)
Process air；For the control of workshop moisture temperature, according to the principle of " humidity priority " and " increasing little subtracting greatly "：When in workshop, humidity is low
When setting value, first increase the larger air quantity of water capacity in wind mixed chamber (5), increase spray chamber (26) if can not meeting requirement
Water circulating pump (9) frequency, until water circulating pump (9) frequency reaches maximum rating, if be not met by require, be increased by
Breeze fan (7) frequency reaches requirement until workshop humidity；When workshop humidity is higher than setting value, just reduce breeze fan successively
(7) and water circulating pump (9) frequency, maximally utilize the regulation to resh air requirement and return air amount ratio in wind mixed chamber (5)；For temperature
The control of degree is also carried out on the basis of humidity regulation, when workshop temperature is less than setting value, except increasing mixed wind
Outside return air air quantity in room (5), the mode that auxiliary heating is also usually used heats to wind mixed chamber (5) air, thus raising car
Between temperature；It is higher than operating mode during design temperature for workshop temperature, disregard.
2. textile mills as claimed in claim 1 combined type PLC automatic control system of air conditioner control method it is characterised in that
Described textile mills combined type PLC automatic control system of air conditioner includes return airway (3), and described return airway (3) passes through return air wind
Machine (2) connects return air chamber (1), and described return air chamber (1) connects wind mixed chamber (5), described return air chamber (1) and described wind mixed chamber (5) it
Between be provided with return wind transom (16), described wind mixed chamber (5) side connects new air compartment (4), opposite side connects spray chamber (26), described new
Air compartment (4) is provided with new air regulator (15), and described spray chamber (26) connects plenum chamber (6), and described plenum chamber (6) passes through breeze fan
(7) supply air duct (8), described return air fan (2), return wind transom (16), spray chamber (26), new air regulator (15), breeze fan are connected
(7) all it is connected with PLC (27).
3. textile mills as claimed in claim 2 combined type PLC automatic control system of air conditioner control method it is characterised in that
Described return airway (3) is connected with workshop respectively with supply air duct (8), is provided with workshop humidity tester (25) and car in workshop
Between temperature measuring device (24), described workshop humidity tester (25) and workshop temperature tester (24) all with PLC (27)
It is connected.
4. textile mills as claimed in claim 2 combined type PLC automatic control system of air conditioner control method it is characterised in that
It is provided between described wind mixed chamber (5) and described spray chamber (26) and mix wind defecator (17).
5. textile mills as claimed in claim 4 combined type PLC automatic control system of air conditioner control method it is characterised in that
It is provided between described mixing wind defecator (17) and described spray chamber (26) and mix wind humidity tester (23) and mixing wind
Temperature measuring device (22), described mixing wind humidity tester (23) and mixing air temperature tester (22) be equal and PLC
(27) it is connected.
6. textile mills as claimed in claim 2 combined type PLC automatic control system of air conditioner control method it is characterised in that
Described new air compartment (4) is additionally provided with fresh air humidity tester (21) and fresh air temperature measuring device (20), described fresh air humidity measurement
Uniformly PLC (27) is connected instrument (21) with fresh air temperature measuring device (20).
7. textile mills as claimed in claim 2 combined type PLC automatic control system of air conditioner control method it is characterised in that
Described spray chamber (26) is connected to water circulating pump (9) and chilled water pump (10), and described water circulating pump (9) passes through water circulating pump
Converter (13) is connected with PLC (27), and chilled water pump (10) passes through chilled water pump converter (14) and PLC
(27) it is connected.
8. textile mills as claimed in claim 2 combined type PLC automatic control system of air conditioner control method it is characterised in that
It is provided with return air fan converter (19), return wind transom (16) and PLC between described return air fan (2) and PLC (27) to control
It is provided between device (27) processed between return wind transom volume damper (11), new air regulator (15) and PLC (27) and be provided with newly
It is provided with breeze fan converter (18) between air regulator volume damper (12), breeze fan (7) and PLC (27).
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| CN201410465112.4A CN104214911B (en) | 2014-09-12 | 2014-09-12 | Control method of compound PLC (programmable logic controller) air conditioning automatic control system in textile mill |
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| CN201410465112.4A CN104214911B (en) | 2014-09-12 | 2014-09-12 | Control method of compound PLC (programmable logic controller) air conditioning automatic control system in textile mill |
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| CN104214911B true CN104214911B (en) | 2017-02-15 |
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Families Citing this family (9)
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| CN106322598A (en) * | 2016-08-26 | 2017-01-11 | 张家港市金陵纺织有限公司 | Air-conditioning system for weaving workshop and control method of air-conditioning system |
| CN106765684A (en) * | 2016-11-15 | 2017-05-31 | 河南华东工控技术有限公司 | Spinning air-conditioning system and its regulation and control method |
| CN106545937A (en) * | 2016-11-15 | 2017-03-29 | 河南华东工控技术有限公司 | Air conditioning system and control method between spinning |
| CN107152738A (en) * | 2017-06-28 | 2017-09-12 | 孙家驹 | The reverse-flow weaving special air conditioner washing chamber of fluid dynamic |
| CN109883005B (en) * | 2019-03-26 | 2021-04-30 | 广州远正智能科技股份有限公司 | Intelligent control system, method, medium and equipment for terminal air-conditioning equipment of terminal station building |
| CN110131842A (en) * | 2019-04-02 | 2019-08-16 | 西安工程大学 | A kind of spinning and weaving workshop air-conditioning system PLC autocontrol method |
| CN110260431B (en) * | 2019-05-21 | 2022-09-13 | 江苏精亚环境科技有限公司 | Control method of air conditioning system of textile workshop |
| CN113362568B (en) * | 2021-07-15 | 2022-07-19 | 青岛海尔空调器有限总公司 | Anti-fatigue control method based on parking air conditioner |
| CN114838460A (en) * | 2022-06-06 | 2022-08-02 | 西安工程大学 | Textile enterprise air conditioning system control method based on dynamic adjustment algorithm |
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