CN101993194A - System and method for finely adjusting both-end temperature of bushing - Google Patents

System and method for finely adjusting both-end temperature of bushing Download PDF

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Publication number
CN101993194A
CN101993194A CN2009101637302A CN200910163730A CN101993194A CN 101993194 A CN101993194 A CN 101993194A CN 2009101637302 A CN2009101637302 A CN 2009101637302A CN 200910163730 A CN200910163730 A CN 200910163730A CN 101993194 A CN101993194 A CN 101993194A
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China
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bushing
scr
control signal
pha
temperature
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CN2009101637302A
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黄军
林春华
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Kingboard Chemical Holdings Ltd
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Kingboard Chemical Holdings Ltd
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00Technologies relating to the processing of minerals
    • Y02P40/50Glass production, e.g. reusing waste heat during processing or shaping
    • Y02P40/57Improving the yield, e-g- reduction of reject rates

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Abstract

The invention provides a system and a method for finely adjusting both-end temperature of a bushing. The system comprises a control device, a pressure-adjusting device and a phase-adjusting device, wherein the control device is used for collecting a temperature signal of the bushing and outputting a control signal, the pressure-adjusting device is used for respectively adjusting the output voltage of an SCR (Semiconductor Control Rectifier) corresponding to each region of the bushing according to the control signal, and the phase-adjusting device is used for adjusting the phase of the output current of the SCR corresponding to each region of the bushing according to the control signal. The embodiment of the invention can save time and labor originally consumed in the prior art without influencing the production.

Description

A kind of system and method for finely tuning bushing two ends temperature
Technical field
The present invention relates to data processing field, particularly relate to a kind of system and method for finely tuning bushing two ends temperature.
Background technology
At present, in the glass manufacturing, the heating of bushing is all heated by separate unit silicon-controlled voltage regulation device SCR control, promptly reach heated constant temperature by the output voltage of regulating SCR.The constant constant temperature that just can keep bushing of output voltage that keeps SCR in theory, but because the influence of external environment, for example: the variation of the fluctuation of SCR input voltage, the influence of envrionment temperature, wire drawing passage air-flow all can cause the bushing variation of temperature, so need Controlling System constantly to regulate.
Three bushings are different with common bushing, and the quantity of leting slip a remark when length increases has also increased.Because three bushing length increase, because being installed, reason of discrepancies can cause bushing two ends electric current distribution inequality, cause the on the low side or higher consequence of two ends temperature, in addition, the temperature of kiln path both sides is original just low than the centre in actual applications, so for three bushings, the temperature in each district of its body is difficult to be consistent, the scope that differs is between 1-50 degree centigrade.Differ because bushing is the temperature in each district of unit with the tube, will cause the weight of the fiberglass spinning cake of each to differ, have a strong impact on the quality of glass fibre, more serious meeting causes the bushing cross flow, and wire drawing is disconnected easily to fly, and production is affected greatly.
Therefore, in the prior art, a kind of treatment process of regulating the bushing two ends temperature difference is arranged, its principle and implementation procedure are as follows: in the SCR of bushing, electrode holder contacts many more with electrode, the heat of being taken away by the electrode holder water coolant is just many, simultaneously because the contact position of this electrode holder and electrode will influence the distribution of current density of bushing, therefore with electrode holder timing up, the temperature of this end will reduce; The realization of concrete adjustment mode can be after bushing has a power failure, and regulates the contact position of electrode holder and electrode with the way of fine adjustment screw, so just can reach the purpose of adjustment temperature by the distance that the adjustment electrode clips to bushing electrode root.
In the prior art, from said process as can be seen, must carry out the power operation of bushing during this method operation, this just promptly expends time in and manpower to a certain extent, also can impact production, the regulation range of this method is limited in addition, and present distance range size is 6mm, because adjustable temperature range is below 20 degrees centigrade.Simultaneously also can't guarantee once just to adjust to optimum regime.
In a word, need the urgent technical problem that solves of those skilled in the art to be exactly at present: how can propose a kind of under the situation that does not need to cut off the power supply the method for the conveniently adjusted bushing two ends temperature difference, promptly expend time in to a certain extent and manpower in order to solve in the prior art, and the problem that can impact production.
Summary of the invention
Technical problem to be solved by this invention provides a kind of system and method for finely tuning bushing two ends temperature, promptly expends time in to a certain extent and manpower in order to solve in the prior art, and the problem that can impact production.
For solving the problems of the technologies described above, the embodiment of the invention provides a kind of system that finely tunes bushing two ends temperature, comprising:
Control device, the temperature signal and the output control signal that are used to gather bushing;
Regulator is used for regulating the size that bushing is respectively distinguished pairing silicon-controlled voltage regulation device SCR output voltage respectively according to described control signal;
Phase adjusting apparatus is used for regulating the phase place that bushing is respectively distinguished pairing SCR outward current according to described control signal.
Preferably, described control device specifically is used to gather the temperature signal of bushing, exports control signal after the PID computing.
Preferably, described regulator specifically comprises: the first silicon-controlled voltage regulation device SCR, the 2nd SCR and Three S's CR, and described the 2nd SCR links to each other with residing tube position, bushing two ends subregion respectively with Three S's CR, and a described SCR links to each other with main electrode.
Preferably, described the 2nd SCR and Three S's CR are respectively applied for according to control signal and regulate the sectional input voltage size in residing tube position, bushing two ends.
Preferably, described phase adjusting apparatus specifically comprises: the first phase converter PHA and the 2nd PHA, a described PHA links to each other with the input terminus of the pairing first transformer TM in bushing two ends, the 2nd TM respectively with the 2nd PHA.
Preferably, a described PHA and the 2nd PHA specifically are used for respectively distinguishing pairing SCR outward current phase place according to control signal adjusting bushing.
The embodiment of the invention also provides a kind of method of regulating the bushing two ends temperature difference, comprising:
Control device is according to the temperature level at bushing two ends, and the collecting temperature signal is also exported control signal;
Regulator is regulated the output voltage size at bushing two ends respectively according to described control signal;
Phase adjusting apparatus is regulated the phase place of SCR outward current according to described control signal.
Preferably, described control device is according to the temperature level at bushing two ends, and collecting temperature signal and output control signal specifically comprise:
Described control device is regulated the sectional temperature signal in residing tube position, bushing two ends according to control signal, and proportion of utilization integral differential PID calculates and obtains the control signal that residing tube position, two ends section post needs.
Preferably, described regulator specifically comprises: the first silicon-controlled voltage regulation device SCR, the 2nd SCR and Three S's CR, and described the 2nd SCR links to each other with residing tube position, bushing two ends subregion respectively with Three S's CR; A described SCR links to each other with the bushing main electrode, and the output voltage size that described regulator is regulated the bushing two ends respectively according to described control signal specifically comprises:
Described the 2nd SCR and Three S's CR regulate the SCR input voltage size of residing tube position, bushing two ends subregion correspondence respectively according to control signal.
Preferably, described adjustment phase device specifically comprises: the first phase converter PHA and the 2nd PHA, and a described PHA links to each other with residing tube position, bushing two ends subregion respectively with the 2nd PHA; Then adjust the phase place that phase device is regulated the received current at bushing two ends according to described control signal, specifically comprise:
A described PHA and the 2nd PHA regulate the outward current phase place of the SCR of residing tube position, bushing two ends subregion correspondence according to control signal.
Compared with prior art, the present invention has the following advantages:
In the present embodiment, provide a kind of system and method for finely tuning bushing two ends temperature, described system comprises: control device, the temperature signal and the output control signal that are used to gather bushing; Regulator is used for regulating the size that bushing is respectively distinguished pairing SCR output voltage respectively according to described control signal; Phase adjusting apparatus is used for regulating the phase place that bushing is respectively distinguished pairing SCR outward current according to described control signal; The embodiment of the invention can be saved script consumed time and manpower in the prior art, also can not impact production.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is a kind of structural representation of regulating the system embodiment 1 of the bushing two ends temperature difference of the present invention;
Fig. 2 is a kind of structural representation of regulating the system embodiment 2 of the bushing two ends temperature difference of the present invention;
Fig. 3 is system embodiment 2 an of the present invention structure control block diagram in practice;
Fig. 4 is a kind of schema of regulating the method embodiment of the bushing two ends temperature difference of the present invention.
Embodiment
For above-mentioned purpose of the present invention, feature and advantage can be become apparent more, the present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.
With reference to figure 1, show a kind of schema of regulating the system embodiment 1 of the bushing two ends temperature difference of the present invention, can comprise with lower device:
Control device 101, the temperature signal and the output control signal that are used to gather bushing; Bushing described in the embodiment of the invention is three bushings, and these three bushings to be divided into according to the tube position be three districts, corresponding district, each position, for example, the corresponding proparea of placket is distinguished in the middle tube correspondence, the corresponding back zone of tube, back; The expression of the temperature difference at described bushing two ends size is when the temperature of distinguishing in the bushing satisfies drawing process when requiring, and the temperature of proparea or back zone can not satisfy the drawing process requirement, phenomenon higher or on the low side occurs.In the present embodiment, can come three bushing power supplies by transformer, concrete, can adopt three transformers, be connected to three subregions of described three bushings respectively;
Described control device also comprises software control part in practice, can be according to the temperature level at bushing two ends, computer obtains the temperature signal of T1 in the bushing, T2 and T3 thermopair, export control signal respectively after adopting proportion integration differentiation (PID) computing generally speaking, this control signal specifically can be the current controling signal of 4-20mA; Described control signal is used for controlling the output voltage size of the silicon-controlled voltage regulation device SCR that links to each other with two districts;
Regulator 102 is used for regulating the size that bushing is respectively distinguished pairing SCR output voltage respectively according to described control signal; Described regulator 102 links to each other with described control device 101, and links to each other with the sectional transformer in each position, is used to receive the control signal of described control device output, and according to control signal the size of the input voltage at bushing two ends is regulated; For example, when the temperature drift of proparea, change existing temperature by turning down voltage.Principle to the adjustment of the back zone of bushing and aforementioned introduction is consistent;
Phase adjusting apparatus 103 is used for respectively distinguishing according to described control signal the phase place of pairing SCR outward current.
In the present embodiment, phase adjusting apparatus also links to each other with control device, is used for regulating according to the output signal of control device the current phhase of flow through proparea and back zone; For example: when the temperature drift of proparea, and the output voltage of pairing SCR2 has been zero at this moment, in the time of can't turning down its pairing temperature by reduction voltage, promptly need to change electric current I 2 phase places in this district that flows through, make itself and I1 anti-phase, reduce this district's distribution of current density, thereby reach the purpose of cooling.
Wherein, described regulator can adopt silicon-controlled voltage regulation device SCR to realize, described phase adjusting apparatus can adopt phase converter PHA to realize, when described control device obtains temperature from the bushing main body, can realize according to the thermopair (temperature sensor) that is integrated on the bushing main body, wherein, the thermopair that the bushing main body connects can be corresponding one by one with the tube position subregion on the bushing main body, promptly is the corresponding thermopair of a subregion.
When adopting the embodiment of the invention that the temperature at bushing two ends is adjusted, need not bushing is carried out power operation, and for three bushings, can make all corresponding SCR of each position subregion, the SCR in district just can directly power to whole bushing like this, and the SCR that the proparea is connected with the back zone just can be according to control signal by regulating the input voltage of bushing proparea and back zone, and by adjusting phase device realizes keeping bushing to the adjustment of current phhase constant temperature, thereby saved script consumed time and manpower in the prior art, also can not impact production.
With reference to figure 2, show a kind of structural representation of regulating the system embodiment 2 of the bushing two ends temperature difference of the present invention, present embodiment can comprise with lower device:
In the present embodiment, simultaneously with reference to figure 3, be present embodiment control chart in actual applications, bushing can be divided into main electrode and sub-electrode, the main electrode two ends are powered by first transformer (TM1), the secondary low voltage that is output as 0-5V of TM1, and corresponding electric current I 1 reaches as high as 3000 amperes, TM1 is to the power supply of monoblock bushing, and power reaches 30KVA. Simultaneously, for second transformer (TM2) that the proparea links to each other, its secondary output remains the low voltage of 0-5V, and TM2 powers to the proparea, is mainly used to finely tune the temperature in this district, and TM3 powers to the back zone, also is the temperature that is used for finely tuning this district.
Described control device 201 specifically is used for three sectional temperature level in tube position according to bushing, exports control signal after the computing of employing proportion integration differentiation (PID);
The content of described control device adopts the PID computing module to realize, promptly is the temperature that is input as each district of bushing, and described control signal is used to control the output voltage of follow-up regulator; Described control signal is specifically as follows 4~20 milliamperes electric current;
In the present embodiment, described regulator can comprise silicon-controlled voltage regulation device the one SCR (SCR1), the 2nd SCR (SCR2) and Three S's CR (SCR3), and the described second voltate regulator SCR2 links to each other with residing tube position, bushing two ends subregion respectively with Three S's CR3; Described control signal has three in the present embodiment, is respectively the control signal in each district of bushing, and inputs to each voltate regulator respectively; Wherein, the control signal of the electric current that any SCR correspondence is 4~20 milliamperes, scope that can regulating voltage is 0~380 volt;
Wherein, the two ends main electrode of described SCR1 and bushing directly links to each other, and a described SCR can be called main SCR, and its output voltage can satisfy the required temperature value of bushing wire drawing substantially; Wherein, the concrete partitioned mode of three bushings can be as follows: if bushing has 1200 to let slip a remark, the zones that are exactly preceding 400 correspondences of leting slip a remark so are exactly placket subregion (proparea), middle 400 corresponding zones of leting slip a remark are exactly middle tube subregion (middle district), and last 400 corresponding zones of leting slip a remark are exactly tube back zone (back zone), back;
Because in actual applications, proparea and back zone substantially can be not identical with middle district on temperature, but it is not can difference too big yet, therefore in this case, can be according to the needs of production technique, the voltage that voltate regulator SCR2 and voltate regulator SCR3 are regulated under the effect of control signal is separately exported, thereby reaches the temperature of fine setting proparea and back zone;
Described the 2nd SCR202 and Three S's CR203 can be respectively applied for according to control signal and regulate the sectional input voltage size in residing tube position, bushing two ends.
In the present embodiment, suppose that bushing has 1200 to let slip a remark, let slip a remark with regard to corresponding preceding 400 in the proparea so, and by that analogy, let slip a remark in middle district and back zone also 400 of while correspondences; According to the production technique needs, make the 2nd SCR, the adjusting of Three S's CR under the effect of control signal voltage output separately, thus then can be by the different temperature of finely tuning these two districts of voltage of input proparea and back zone;
Described phase adjusting apparatus specifically comprises: the first phase converter PHA204 and the 2nd PHA205, and a described PHA links to each other with residing tube position, bushing two ends subregion respectively with the 2nd PHA;
In the present embodiment, a described PHA promptly directly links to each other with proparea, tube position, and described the 2nd PHA then directly links to each other with back zone, tube position; An aforesaid SCR then directly and distinguish in the tube position and link to each other, described the 2nd SCR passes through a described PHA and links to each other with the proparea, described Three S's CR passes through described the 2nd PHA and links to each other with the back zone;
A described PHA and the 2nd PHA specifically are used for regulating the sectional received current phase place in residing tube position, bushing two ends according to control signal.Promptly be in the present embodiment, can according to temperature whether needs raise or transfer down to control the phase place of the outward current of PHA1 or PHA2, can easily control the temperature difference at three bushing two ends of platinum rhodium like this.
Adopt the described system of present embodiment, can be from the sectional input voltage in each position, and two aspects of the phase place of received current, control the temperature difference at bushing two ends easily, keep the constant temperature of bushing, thereby improved the production efficiency of glass industry.
Need to prove that those skilled in the art also should know, the embodiment described in the specification sheets all belongs to preferred embodiment, and related action and module might not be that the present invention is necessary.
With reference to figure 4, show a kind of schema of regulating the method embodiment of the bushing two ends temperature difference of the present invention, can may further comprise the steps:
Step 401: control device is exported control signal according to the temperature level at bushing two ends after the PID computing;
In actual applications, this step specifically can comprise:
Described control device is gathered the sectional temperature signal in each position of bushing, and the required control signal of SCR is respectively distinguished in output after the PID computing.
Step 402: regulator is regulated the input voltage size at bushing two ends respectively according to described control signal;
In actual applications, described regulator specifically can comprise: the first silicon-controlled voltage regulation device SCR, the 2nd SCR and Three S's CR, and described the 2nd SCR links to each other with residing tube position, bushing two ends subregion respectively with Three S's CR; Then this step specifically can comprise:
Described the 2nd SCR and Three S's CR regulate the sectional input voltage size in residing tube position, bushing two ends according to control signal respectively.
Step 403: phase adjusting apparatus is regulated the phase place of the received current at bushing two ends according to described control signal.
Described phase adjusting apparatus specifically comprises: the first phase converter PHA and the 2nd PHA, and a described PHA links to each other with residing tube position, bushing two ends subregion respectively with the 2nd PHA; Then this step specifically comprises:
A described PHA and the 2nd PHA regulate the sectional received current phase place in residing tube position, bushing two ends according to control signal.
Adopt the described method of present embodiment, can be from the sectional input voltage in each position, and two aspects of the phase place of received current, control the temperature difference at bushing two ends easily, keep the constant temperature of bushing, thereby improved the production efficiency of glass industry.
Need to prove that each embodiment in this specification sheets all adopts the mode of going forward one by one to describe, what each embodiment stressed all is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.For device class embodiment, because it is similar substantially to method embodiment, so description is fairly simple, relevant part gets final product referring to the part explanation of method embodiment.
Need to prove, in this article, relational terms such as first and second grades only is used for an entity or operation are made a distinction with another entity or operation, and not necessarily requires or hint and have the relation of any this reality or in proper order between these entities or the operation.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thereby make and comprise that process, method, article or the equipment of a series of key elements not only comprise those key elements, but also comprise other key elements of clearly not listing, or also be included as this process, method, article or equipment institute inherent key element.Do not having under the situation of more restrictions, the key element that limits by statement " comprising ... ", and be not precluded within process, method, article or the equipment that comprises described key element and also have other identical element.
More than a kind of device of finely tuning bushing two ends method of temperature and regulating bushing two ends temperature provided by the present invention is described in detail, used specific case herein principle of the present invention and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.

Claims (10)

1. a system that finely tunes bushing two ends temperature is characterized in that, comprising:
Control device, the temperature signal and the output control signal that are used to gather bushing;
Regulator is used for regulating the size that bushing is respectively distinguished pairing silicon-controlled voltage regulation device SCR output voltage respectively according to described control signal;
Phase adjusting apparatus is used for regulating the phase place that bushing is respectively distinguished pairing SCR outward current according to described control signal.
2. the system as claimed in claim 1 is characterized in that, described control device specifically is used to gather the temperature signal of bushing, exports control signal after the PID computing.
3. the system as claimed in claim 1, it is characterized in that, described regulator specifically comprises: the first silicon-controlled voltage regulation device SCR, the 2nd SCR and Three S's CR, and described the 2nd SCR links to each other with residing tube position, bushing two ends subregion respectively with Three S's CR, and a described SCR links to each other with main electrode.
4. system as claimed in claim 3 is characterized in that, described the 2nd SCR and Three S's CR are respectively applied for according to control signal and regulate the sectional input voltage size in residing tube position, bushing two ends.
5. the system as claimed in claim 1, it is characterized in that, described phase adjusting apparatus specifically comprises: the first phase converter PHA and the 2nd PHA, a described PHA links to each other with the input terminus of the pairing first transformer TM in bushing two ends, the 2nd TM respectively with the 2nd PHA.
6. system as claimed in claim 5 is characterized in that, a described PHA and the 2nd PHA specifically are used for regulating bushing according to control signal and respectively distinguish pairing SCR outward current phase place.
7. a fine setting bushing two ends method of temperature is characterized in that, comprising:
Control device is according to the temperature level at bushing two ends, and the collecting temperature signal is also exported control signal;
Regulator is regulated the output voltage size at bushing two ends respectively according to described control signal;
Phase adjusting apparatus is regulated the phase place of SCR outward current according to described control signal.
8. method as claimed in claim 7 is characterized in that, described control device is according to the temperature level at bushing two ends, and collecting temperature signal and output control signal specifically comprise:
Described control device is regulated the sectional β temperature signal in residing tube position, bushing two ends according to control signal, and proportion of utilization integral differential PID calculates and obtains the control signal that residing tube position, two ends section post needs.
9. method as claimed in claim 7 is characterized in that, described regulator specifically comprises: the first silicon-controlled voltage regulation device SCR, the 2nd SCR and Three S's CR, and described the 2nd SCR links to each other with residing tube position, bushing two ends subregion respectively with Three S's CR; A described SCR links to each other with the bushing main electrode, and the output voltage size that described regulator is regulated the bushing two ends respectively according to described control signal specifically comprises:
Described the 2nd SCR and Three S's CR regulate the SCR input voltage size of residing tube position, bushing two ends subregion correspondence respectively according to control signal.
10. method as claimed in claim 7 is characterized in that, described adjustment phase device specifically comprises: the first phase converter PHA and the 2nd PHA, and a described PHA links to each other with residing tube position, bushing two ends subregion respectively with the 2nd PHA; Then adjust the phase place that phase device is regulated the received current at bushing two ends according to described control signal, specifically comprise:
A described PHA and the 2nd PHA regulate the outward current phase place of the SCR of residing tube position, bushing two ends subregion correspondence according to control signal.
CN2009101637302A 2009-08-14 2009-08-14 System and method for finely adjusting both-end temperature of bushing Pending CN101993194A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102351416A (en) * 2011-08-25 2012-02-15 巨石集团有限公司 Bushing emergency system, DCS (Distributed Control System) and bushing emergency method
CN102515508A (en) * 2011-11-18 2012-06-27 巨石集团有限公司 Method and device for adjusting linear density of glass fiber through correcting bushing temperature in real-time manner
CN105541107A (en) * 2015-12-23 2016-05-04 巨石攀登电子基材有限公司 A temperature compensating control device for a bushing plate subregion and a control method thereof
CN106094714A (en) * 2016-08-10 2016-11-09 桐乡华锐自控技术装备有限公司 A kind of yarn group's count automatic regulating system and method thereof
CN110357414A (en) * 2019-06-10 2019-10-22 张正周 Bushing used in a kind of production of micro-fiber glass wool
CN110727197A (en) * 2019-11-06 2020-01-24 桐乡华锐自控技术装备有限公司 Online control method for yarn group number

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102351416A (en) * 2011-08-25 2012-02-15 巨石集团有限公司 Bushing emergency system, DCS (Distributed Control System) and bushing emergency method
CN102351416B (en) * 2011-08-25 2013-08-14 巨石集团有限公司 Bushing emergency system, DCS (Distributed Control System) and bushing emergency method
CN102515508A (en) * 2011-11-18 2012-06-27 巨石集团有限公司 Method and device for adjusting linear density of glass fiber through correcting bushing temperature in real-time manner
CN105541107A (en) * 2015-12-23 2016-05-04 巨石攀登电子基材有限公司 A temperature compensating control device for a bushing plate subregion and a control method thereof
CN106094714A (en) * 2016-08-10 2016-11-09 桐乡华锐自控技术装备有限公司 A kind of yarn group's count automatic regulating system and method thereof
CN110357414A (en) * 2019-06-10 2019-10-22 张正周 Bushing used in a kind of production of micro-fiber glass wool
CN110727197A (en) * 2019-11-06 2020-01-24 桐乡华锐自控技术装备有限公司 Online control method for yarn group number
CN110727197B (en) * 2019-11-06 2022-08-02 桐乡华锐自控技术装备有限公司 Online control method for yarn group number

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Application publication date: 20110330