CN108589125A - The intelligent electric-controlled trapping method of steam baking tube and device - Google Patents
The intelligent electric-controlled trapping method of steam baking tube and device Download PDFInfo
- Publication number
- CN108589125A CN108589125A CN201810574813.XA CN201810574813A CN108589125A CN 108589125 A CN108589125 A CN 108589125A CN 201810574813 A CN201810574813 A CN 201810574813A CN 108589125 A CN108589125 A CN 108589125A
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- Prior art keywords
- steam
- temperature
- baking tube
- range
- drain pipe
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Links
- 238000001926 trapping method Methods 0.000 title claims abstract description 18
- 230000002209 hydrophobic effect Effects 0.000 claims abstract description 43
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims description 15
- 238000001035 drying Methods 0.000 description 14
- 239000004744 fabric Substances 0.000 description 11
- 238000010025 steaming Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000004043 dyeing Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
- D06B15/00—Removing liquids, gases or vapours from textile materials in association with treatment of the materials by liquids, gases or vapours
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Drying Of Solid Materials (AREA)
- Treatment Of Fiber Materials (AREA)
Abstract
The invention discloses a kind of intelligent electric-controlled trapping method of steam baking tube and devices, the trapping method is by inputting in steam baking tube steam through main steam range, it pushes and is arranged outside the condensed water in steam baking tube, when the temperature in drain pipe pipeline is true plus return difference temperature △ T equal to vapor (steam) temperature in main steam range and the product of temperature coefficient K, control valve is closed, and is stopped hydrophobic；When the temperature in drain pipe pipeline is true equal to vapor (steam) temperature in main steam range and the product of temperature coefficient K, control valve is opened, and hydrophobic, 0 DEG C of T≤6 DEG C ＜ △, 0.6≤K≤0.9 are carried out.The steam trap connection includes steam baking tube, drain pipe, the first temperature sensor, control valve and electric controller and main steam range, and steam trap connection further includes being mounted on main steam range pipeline for detecting the second temperature sensor or steam pressure sensor of vapor (steam) temperature or pressure in main steam range.The present invention can accurately carry out it is hydrophobic and stop it is hydrophobic, improve the thermal efficiency, significantly reduce steam consumption.
Description
Technical field
The present invention relates to a kind of automatically controlled trapping method of steam baking tube and steam trap connections, belong to weave dyeing and finishing technique and equipment skill
Art field.
Background technology
Textile printing and dyeing enterprises largely use steam baking tube drying belt water fabric, and the condensed water in steam baking tube influences heat and hands over
Efficiency is changed, needs to discharge it the thermal efficiency that could improve steam baking tube in time, to save steam, reduces energy consumption.
The existing automatically controlled steam trap connection of steam baking tube, including steam baking tube, rotary joint, the drain port by rotary joint
The drain pipe that is connected with steam baking tube inner cavity, the temperature on drain pipe pipeline and for detecting temperature in drain pipe pipeline
Degree transmitter, the control valve on drain pipe pipeline and for being turned on and off drain pipe and electric controller and steam
Manifold, the temperature transmitter, control valve are electrically connected with electric controller respectively, and steam is through main steam range and passes through rotary joint
Steam inlet enters in steam baking tube.
When steam baking tube equipment starts, electric controller opens control valve, steaming of the steam through main steam range and rotary joint
Vapor inlet enters in steam baking tube, and condensed water is pushed to be discharged by drain pipe, control valve, in hydrophobic process, electric control
Device receives the temperature data in the drain pipe pipeline that detects of temperature transmitter, is set in electric controller when vapor (steam) temperature reaches
When hydrophobic end temp, electric controller closing control valve, drain pipe stops hydrophobic.
The temperature data in drain pipe pipeline that the online real-time reception temperature transmitter of electric controller detects, when steam temperature
When degree reaches the drain temperature set in electric controller, it is hydrophobic that electric controller opens control valve progress.
There is the shortcomings that following two aspects during the work time in the automatically controlled trapping method of existing steam baking tube and device：
（1）It, should when vapor (steam) temperature in main steam range or pressure change or artificially change the aperture of main steam range steam valve
Method and device cannot be carried out accurately hydrophobic and accurately stop hydrophobic, cause the thermal efficiency of steam baking tube low, steam leakage
Seriously, mass energy is wasted, steam consumption is added significantly to；（2）It, cannot during steam baking tube drying band water fabric
Solve vapour lock, water accumulation be easy in drying cylinder, drying cylinder dead weight is caused to increase, there is a security risk, hydrophobic efficiency and steam utilization compared with
It is low, increase production operation costs.
Invention content
The technical problem to be solved by the present invention is to overcome the deficiencies in the prior art, provide it is a kind of can accurately carry out it is hydrophobic and accurate
Really stop hydrophobic, improve the thermal efficiency of steam baking tube, prevent steam from leaking, saves the energy, the steaming of steam consumption is greatly reduced
The intelligent electric-controlled trapping method of vapour drying cylinder.
Another of the invention technical problems to be solved be to provide it is a kind of can accurately carry out hydrophobic and accurately stop hydrophobic, carry
The thermal efficiency of high steam baking tube, prevents steam from leaking, and saves the energy, and the steam baking tube that steam consumption is greatly reduced is intelligent electric-controlled
Steam trap connection.
In order to solve the above technical problems, the present invention uses the intelligent electric-controlled trapping method of such a steam baking tube, this method
By by steam through main steam range input steam baking tube in, push steam baking tube in condensed water by drain pipe, control valve to
Outer discharge adds return difference temperature when the temperature in drain pipe pipeline is equal to vapor (steam) temperature and the product of temperature coefficient K in main steam range
When △ T are true, the control valve is closed, and is stopped hydrophobic；When the temperature in drain pipe pipeline is equal to vapor (steam) temperature in main steam range
When product with temperature coefficient K is true, the control valve is opened, and is carried out hydrophobic；Wherein, 0 DEG C of T≤6 DEG C ＜ △, 0.6≤K≤0.9.
As the preferred embodiment of the above method, the value range of the return difference temperature △ T is 2~5 DEG C, the temperature
The value range of COEFFICIENT K is 0.75~0.85.
As the preferred embodiment of the above method, stopping hydrophobic period, the control valve open periodically the several seconds into
Row solution vapour lock.
In the present invention, the period was preferably a period every 20 minutes.
In order to solve the above technical problems, the present invention uses the intelligent electric-controlled steam trap connection of such a steam baking tube, including steam
Vapour drying cylinder, the drain pipe being connected with the steam baking tube inner cavity, on the drain pipe pipeline and for detect it is hydrophobic
First temperature sensor of temperature, the control on the drain pipe pipeline and for being turned on and off drain pipe in pipe pipeline
Valve and electric controller processed and main steam range, first temperature sensor are electrically connected with the electric controller, the control valve
It is controlled by the electric controller, steam is inputted through main steam range in the steam baking tube, the intelligent electric-controlled hydrophobic dress of the steam baking tube
Set further includes being mounted on the main steam range pipeline and for detecting vapor (steam) temperature in main steam range or steam pressure
Two temperature sensors either the steam pressure sensor second temperature sensor or steam pressure sensor with it is described automatically controlled
Device electrical connection processed.
As a kind of preferred embodiment of the present invention, hand stop valve is also equipped on the main steam range pipeline.
In the present invention, the electric controller can be have man-machine interface digitial controller or embedded system or
Person's industrial personal computer.
After above-mentioned trapping method and device, the invention has the advantages that：
The present invention is equal to vapor (steam) temperature and temperature system in main steam range in trapping method, using when the temperature in drain pipe pipeline
When the product of number K plus return difference temperature △ T is true, control valve is closed, and stopping is hydrophobic；When the temperature in drain pipe pipeline is equal to steam
When vapor (steam) temperature and the product of temperature coefficient K are true in manifold, control valve is opened, and is carried out hydrophobic.Correspondingly in steam trap connection, adopt
With on main steam range pipeline setting detection main steam range in vapor (steam) temperature either the second temperature sensor of steam pressure or
Steam pressure sensor, when work, second temperature sensor or steam pressure sensor detect steam in main steam range in real time
Temperature or steam pressure are simultaneously delivered to electric controller, while the first temperature sensor detects the temperature in drain pipe pipeline in real time
And it is delivered to electric controller, electric controller judges after calculating, is steamed when the temperature in drain pipe pipeline is equal in main steam range
When the product of stripping temperature and temperature coefficient K plus return difference temperature △ T are true, closing control valve, stopping is hydrophobic；When in drain pipe pipeline
Temperature when to be equal to the product of vapor (steam) temperature and temperature coefficient K in main steam range be true, opening controlling valve carries out hydrophobic.In this way, working as
When vapor (steam) temperature or pressure change or artificially changes the aperture of main steam range steam valve in main steam range, do not influence
Accurate hydrophobic, the present invention realizes during the work time accurately to be carried out hydrophobic and accurately stops hydrophobic, and steam baking tube is improved
The thermal efficiency effectively prevents steam leakage, and compared with prior art, the present invention significantly reduces steam consumption.
The present invention can quickly be locked from principal solution vapour automatically during steam baking tube drying band water fabric, more conducively accurate to dredge
Water so that hydrophobic Measure Precision higher greatlys improve hydrophobic efficiency, while substantially increasing steam utilization, reaches energy saving
Efficiently.
The present invention adapts to different grammes per square metres, the drying requirement of moisture content fabric, preferably reaches the intelligence electricity of steam baking tube
Control hydrophobic effect.
The of simple structure and strong practicability of steam trap connection of the present invention, it is easy to implement, the reliability of system is enhanced, is reduced
Operation costs preferably meet production requirement.
Description of the drawings
The specific implementation mode of the present invention is described in further detail below in conjunction with attached drawing.
Fig. 1 is a kind of structural schematic diagram of the intelligent electric-controlled steam trap connection of steam baking tube of the present invention.
Fig. 2 is the enlarged diagram at A in Fig. 1.
Fig. 3 be the intelligent electric-controlled steam trap connection of steam baking tube of the present invention in steam baking tube, drain pipe, the first temperature sensor and
A kind of attachment structure schematic diagram of control valve.
Specific implementation mode
Referring to a kind of Fig. 1 to intelligent electric-controlled trapping method of steam baking tube shown in Fig. 3, this method by by steam 7 through steaming
Vapour manifold 6 is inputted in steam baking tube 1, and the condensed water in steam baking tube 1 is pushed to be discharged by drain pipe 2, control valve 4, when
It is true that temperature in 2 pipeline of drain pipe, which is equal to the product of vapor (steam) temperature and temperature coefficient K in main steam range 6 plus return difference temperature △ T,
When, the control valve 4 is closed, and is stopped hydrophobic；When the temperature in 2 pipeline of drain pipe is equal to vapor (steam) temperature and temperature in main steam range 6
When the product for spending COEFFICIENT K is true, the control valve 4 is opened, and is carried out hydrophobic；Wherein, 0 DEG C of T≤6 DEG C ＜ △, 0.6≤K≤0.9.
As the preferred embodiment of the above method, the value range of the return difference temperature △ T is 2~5 DEG C, the temperature
The value range of COEFFICIENT K is 0.75~0.85.
As the preferred embodiment of the above method, stopping hydrophobic period, the control valve 4 open periodically the several seconds into
Row solution vapour lock.In the present invention, the several seconds is preferably 2 or 3 seconds.
As the preferred embodiment of the above method, the period be every 20 minutes be a period, i.e., control valve 4 every
20 minutes opening 2 several seconds of drain pipe carried out solution vapour lock.
Referring to Fig. 1 to a kind of intelligent electric-controlled steam trap connection of steam baking tube using above-mentioned trapping method shown in Fig. 3, including
Steam baking tube 1, the drain pipe 2 being connected with 1 inner cavity of the steam baking tube, on 2 pipeline of the drain pipe and for examining
Survey the first temperature sensor 3 of temperature in 2 pipeline of drain pipe, on 2 pipeline of the drain pipe and for being turned on and off
The control valve 4 and electric controller 5 of drain pipe 2 and main steam range 6, first temperature sensor 3 and the electric controller 5
Electrical connection, the control valve 4 are controlled by the electric controller 5, and in the present invention, the control valve 4 can be electrically operated valve,
Can be gas control valve, when control valve 4 is electrically operated valve, electrically operated valve passes through wirelessly or non-wirelessly electric with the electric controller 5
Connection；When control valve 4 is gas control valve, gas control valve is controlled by the electric controller 5 by relay；Steam 7 is through steam
Manifold 6 is inputted in the steam baking tube 1, and the intelligent electric-controlled steam trap connection of the steam baking tube further includes being mounted on the main steam range 6
Either the second temperature sensor of steam pressure or steam pressure pass on pipeline and for detecting vapor (steam) temperature in main steam range 6
Sensor 8, the second temperature sensor or steam pressure sensor 8 are electrically connected with the electric controller 5.In the present invention,
As shown in Figure 1, the steam baking tube 1 preferably has several, several described steam baking tubes 1 are arranged in a manner of interlocking up and down.
As shown in Figure 2,3, the rotary joint 10 of a routine, the rotary joint 10 are preferably provided in one end of each steam baking tube 1
With drain port 10a and steam inlet 10b, 2 one end of drain pipe is connected by drain port 10a with 1 inner cavity of the steam baking tube,
Main steam range 6 is connected by branch pipe 11 with the steam inlet 10b of rotary joint 10, to input steam 7 in steam baking tube 1.
As shown in Figure 1, 2,2 other end of drain pipe at each steam baking tube 1 is connected with collector pipe 12.In the present invention, steam 7
It can not be inputted steam baking tube 1 in by rotary joint 10 but by other conventional bindiny mechanisms, not shown in figure.
As a kind of preferred embodiment of the present invention, as shown in Figure 1, also being installed on the pipeline of the main steam range 6
It is useful for manually being turned on and off the hand stop valve 9 of main steam range 6.
In the present invention, the electric controller 5 is preferably the digitial controller such as DDC digitial controllers with man-machine interface
Either embedded system or industrial personal computer.
Referring to Fig. 1, the course of work of the invention is as follows：
Hand stop valve 9 in manually opened main steam range 6, second temperature sensor 8 detect steam temperature in main steam range 6 in real time
Electric controller 5 is spent and is delivered to, while the first temperature sensor 3 detects the temperature in 2 pipeline of drain pipe and is delivered to electricity in real time
Controller 5, electric controller 5 judge after calculating, when the temperature in 2 pipeline of drain pipe is equal to vapor (steam) temperature in main steam range 6
When with the product of temperature coefficient K plus return difference temperature △ T being true, closing control valve stops hydrophobic；Temperature in drain pipe pipeline
When product equal to vapor (steam) temperature in main steam range and temperature coefficient K is true, opening controlling valve carries out hydrophobic.In the present invention, may be used
According to the moisture content of dyeing and finishing processing method fabric and to the requirement of dry efficiency, different application parameter △ T and K are selected, when
13 moisture content of fabric, grammes per square metre are higher, and technique requires higher dry efficiency again when, △ T are chosen as 6 DEG C, and K is chosen as 0.85
Or 0.9；Conversely, when 13 moisture content of fabric, grammes per square metre are all smaller, it is appropriate containing damp rate that technique requires drying cropping to retain again, should not
Rapid drying is sought, to mitigate steam consumption, △ T are chosen as 1 DEG C or 2 DEG C at this time, and K is chosen as 0.6；When fabric instances are in above-mentioned
When between the two, △ T are chosen as 3 DEG C or 4 DEG C etc., and K is chosen as 0.7 or 0.75 etc..In 13 mistake of steam baking tube 1 drying band water fabric
Cheng Zhong, electric controller 5 control control valve 4 and open the progress of 2 several seconds of drain pipe every 20 minutes or 30 minutes or other setting times
Solve vapour lock so that the steam being blocked in drain pipe 2 discharges.
In the present invention, steam pressure sensor replacement, work can also be used in the second temperature sensor 8 in the above-mentioned course of work
When, steam pressure sensor detects 6 intraluminal steam of main steam range, 7 pressure in real time, and the real-time steam pressure is delivered to
Electric controller 5, electric controller 5 receive the pressure data and according to saturated-steam temperatures and the pressure table of comparisons, converted calculating, i.e.,
It can be by the real-time steam conversion pressure at real-time steam temperature, to carry out hydrophobic using the above method or stop hydrophobic.
In addition, the steam trap connection of the present invention is in whole work process, electric controller 5 is monitored on-line, refreshes first always
Temperature gap between temperature sensor 3 and second temperature sensor 8, when temperature gap is more than that preset variation range is excellent
When being selected as 10 DEG C, correct drain temperature value, i.e. return difference temperature △ T can more than 6 DEG C, less than or equal to 30 DEG C within the scope of select number
Value, to adapt to the drying requirement of different grammes per square metres, moisture content fabric, preferably reaches the intelligent electric-controlled hydrophobic effect of steam baking tube.
The trapping method and device of the present invention can be carried out accurately hydrophobic and accurately stop hydrophobic, improve steaming by probation
The thermal efficiency of vapour drying cylinder, reduces steam consumption, can better adapt to different grammes per square metres, the drying requirement of moisture content fabric, take
Obtained good effect.
Claims (7)
1. a kind of intelligent electric-controlled trapping method of steam baking tube, this method is by by steam（7）Through main steam range（6）Steam is inputted to dry
Cylinder（1）It is interior, push steam baking tube（1）Interior condensed water passes through drain pipe（2）, control valve（4）It discharges, it is characterised in that：
Work as drain pipe（2）Temperature in pipeline is equal to main steam range（6）Interior vapor (steam) temperature and the product of temperature coefficient K add return difference temperature
When degree △ T are true, the control valve（4）It closes, stops hydrophobic；
Work as drain pipe（2）Temperature in pipeline is equal to main steam range（6）When interior vapor (steam) temperature and the product of temperature coefficient K are true, institute
State control valve（4）It opens, carries out hydrophobic；
Wherein, 0 DEG C of T≤6 DEG C ＜ △, 0.6≤K≤0.9.
2. the intelligent electric-controlled trapping method of steam baking tube according to claim 1, it is characterised in that：The return difference temperature △ T
Value range be 2~5 DEG C, the value range of the temperature coefficient K is 0.75~0.85.
3. the intelligent electric-controlled trapping method of steam baking tube according to claim 1 or 2, it is characterised in that：Stopping the hydrophobic phase
Between, the control valve（4）The unlatching several seconds carries out solution vapour lock periodically.
4. the intelligent electric-controlled trapping method of steam baking tube according to claim 3, it is characterised in that：The period is every 20
Minute is a period.
5. a kind of intelligent electric-controlled steam trap connection of steam baking tube using trapping method described in claim 1, including steam baking tube
（1）And the steam baking tube（1）The drain pipe that inner cavity is connected（2）, be mounted on the drain pipe（2）On pipeline and for examining
Survey drain pipe（2）First temperature sensor of temperature in pipeline（3）, be mounted on the drain pipe（2）On pipeline and for opening
Or close drain pipe（2）Control valve（4）And electric controller（5）And main steam range（6）, first temperature sensor（3）
With the electric controller（5）Electrical connection, the control valve（4）It is controlled by the electric controller（5）, steam（7）Through main steam range
（6）Input the steam baking tube（1）It is interior, it is characterised in that：The intelligent electric-controlled steam trap connection of the steam baking tube further includes being mounted on institute
State main steam range（6）On pipeline and for detecting main steam range（6）Interior vapor (steam) temperature or the second temperature of steam pressure sensing
Device or steam pressure sensor（8）, the second temperature sensor or steam pressure sensor（8）With the electric controller
（5）Electrical connection.
6. the intelligent electric-controlled steam trap connection of steam baking tube according to claim 5, it is characterised in that：In the main steam range
（6）Hand stop valve is also equipped on pipeline（9）.
7. the intelligent electric-controlled steam trap connection of steam baking tube according to claim 5 or 6, it is characterised in that：The electric controller
（5）It is that there is the digitial controller of man-machine interface either embedded system or industrial personal computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810574813.XA CN108589125B (en) | 2018-06-06 | 2018-06-06 | Intelligent electric control drainage method and device for steam drying cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810574813.XA CN108589125B (en) | 2018-06-06 | 2018-06-06 | Intelligent electric control drainage method and device for steam drying cylinder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108589125A true CN108589125A (en) | 2018-09-28 |
| CN108589125B CN108589125B (en) | 2023-11-03 |
Family
ID=63623187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810574813.XA Active CN108589125B (en) | 2018-06-06 | 2018-06-06 | Intelligent electric control drainage method and device for steam drying cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108589125B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109682191A (en) * | 2019-01-29 | 2019-04-26 | 常州宏大智能装备产业发展研究院有限公司 | Steaminess drying cylinder fabric drying control method and device |
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|---|---|---|---|---|
| US20020129605A1 (en) * | 2001-03-16 | 2002-09-19 | Mikhail Levitin | Method of running a condenser for liquidation of steam or vapor |
| CN202786748U (en) * | 2012-09-28 | 2013-03-13 | 黄逸玮 | Drying cylinder steam automatic control device |
| CN105624954A (en) * | 2016-01-25 | 2016-06-01 | 广东溢达纺织有限公司 | System and method for automatically controlling moisture content of fabric |
| CN106440756A (en) * | 2016-10-25 | 2017-02-22 | 顾金华 | Steam cylinder electric control drainage device |
| CN208414845U (en) * | 2018-06-06 | 2019-01-22 | 常州宏大智能装备产业发展研究院有限公司 | The intelligent electric-controlled steam trap connection of steam baking tube |
-
2018
- 2018-06-06 CN CN201810574813.XA patent/CN108589125B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020129605A1 (en) * | 2001-03-16 | 2002-09-19 | Mikhail Levitin | Method of running a condenser for liquidation of steam or vapor |
| CN202786748U (en) * | 2012-09-28 | 2013-03-13 | 黄逸玮 | Drying cylinder steam automatic control device |
| CN105624954A (en) * | 2016-01-25 | 2016-06-01 | 广东溢达纺织有限公司 | System and method for automatically controlling moisture content of fabric |
| CN106440756A (en) * | 2016-10-25 | 2017-02-22 | 顾金华 | Steam cylinder electric control drainage device |
| CN208414845U (en) * | 2018-06-06 | 2019-01-22 | 常州宏大智能装备产业发展研究院有限公司 | The intelligent electric-controlled steam trap connection of steam baking tube |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109682191A (en) * | 2019-01-29 | 2019-04-26 | 常州宏大智能装备产业发展研究院有限公司 | Steaminess drying cylinder fabric drying control method and device |
| CN109682191B (en) * | 2019-01-29 | 2024-07-30 | 常州宏大智能装备产业发展研究院有限公司 | Drying control method for multi-steam drying cylinder fabric |
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| CN108589125B (en) | 2023-11-03 |
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