CN1816739B - Microwave resonator, textile machine comprising a resonator of this type, and a dielectric for this resonator - Google Patents
Microwave resonator, textile machine comprising a resonator of this type, and a dielectric for this resonator Download PDFInfo
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- CN1816739B CN1816739B CN2004800189592A CN200480018959A CN1816739B CN 1816739 B CN1816739 B CN 1816739B CN 2004800189592 A CN2004800189592 A CN 2004800189592A CN 200480018959 A CN200480018959 A CN 200480018959A CN 1816739 B CN1816739 B CN 1816739B
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- 239000004753 textile Substances 0.000 title claims abstract description 13
- 239000002657 fibrous material Substances 0.000 claims abstract description 56
- 238000013461 design Methods 0.000 claims abstract description 6
- 239000012212 insulator Substances 0.000 claims description 102
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 21
- 238000005259 measurement Methods 0.000 claims description 16
- 239000000835 fiber Substances 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 12
- 239000004033 plastic Substances 0.000 claims description 11
- 229920003023 plastic Polymers 0.000 claims description 11
- 238000005498 polishing Methods 0.000 claims description 11
- 238000009413 insulation Methods 0.000 claims description 9
- 238000009960 carding Methods 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 6
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 5
- 239000000919 ceramic Substances 0.000 claims description 5
- 230000008676 import Effects 0.000 claims description 5
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 5
- 229920000515 polycarbonate Polymers 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 239000000565 sealant Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 239000004417 polycarbonate Substances 0.000 claims description 2
- 238000010276 construction Methods 0.000 claims 3
- 239000000463 material Substances 0.000 description 27
- 239000010410 layer Substances 0.000 description 13
- 239000011248 coating agent Substances 0.000 description 9
- 238000000576 coating method Methods 0.000 description 9
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 8
- 240000002853 Nelumbo nucifera Species 0.000 description 8
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- 239000011810 insulating material Substances 0.000 description 4
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
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- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
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- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
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Images
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
- D01G31/00—Warning or safety devices, e.g. automatic fault detectors, stop motions
- D01G31/006—On-line measurement and recording of process and product parameters
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H13/00—Other common constructional features, details or accessories
- D01H13/32—Counting, measuring, recording or registering devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N22/00—Investigating or analysing materials by the use of microwaves or radio waves, i.e. electromagnetic waves with a wavelength of one millimetre or more
- G01N22/04—Investigating moisture content
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/36—Textiles
- G01N33/365—Filiform textiles, e.g. yarns
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Pathology (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Biochemistry (AREA)
- Analytical Chemistry (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Constitution Of High-Frequency Heating (AREA)
- Treatment Of Fiber Materials (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
- Preliminary Treatment Of Fibers (AREA)
Abstract
The invention relates to a microwave resonator for or on a textile machine for connecting to a measuring device serving to measure the weight and/or moisture of fibrous material (FB) continuously conveyed through the resonator space (31; 331; 431; 531). The aim of the invention is to design the resonator in order to improve the measuring accuracy. To this end, the invention provides different advantageous embodiments of at least one electrically non-conductive dielectric (60; 160, 161; 303, 307; 403, 407; 503; 603, 607) for placement in the resonator space (31; 331; 431; 531).
Description
Invention field
The present invention relates to be connected to the microwave resonator that is used to measure mass of fibre material and/or moisture instrument, wherein fiber passes through the conveying of resonator chamber continuously and relates to the textile machine that comprises the type microwave resonator.
Background technology
In textile industry, the measurement of fibre property is a necessary precondition for high-quality textile production.For example, the quality of measuring converted top is necessary, in particular for regulating and control purpose and compensate one or more and prepare to get into the variation in the spinning preliminary machine converted top.Equally, for the quality control purpose material of machine output is carried out the measurement of same-type.Beyond above said quality control, also can adopt the converted top quality (sectional area of converted top, or generally be also referred to as the thickness of sliver; These nouns are appreciated that to equating in the context of this instructions) measurement so that (explanation can not obtain high-quality product) shutdown when the quality of the measurement overshoot of output material or thickness limit.
In the past, adopt mechanically actuated formula sensor to determine the quality or the thickness of converted top at large.The measurement by capacitance sensor also is well-known.On the contrary, adopt the microwave technology representative to measure the new method of converted top quality.In the method, result from the microwave in the microwave generator, its frequency can change under computer control within the specific limits, is connected to the resonator chamber of microwave resonator, and the fibrous material that requires to measure is continuously through this resonator.According to moisture in the fiber, moisture standards in the quality of sliver and the sliver on certain characteristic microwave frequency, resonance signal takes place, and this frequency can be used for estimating the quality and the moisture of sliver through computing machine after drawing chamber.The method of type can supply others to use like this, for example once in EP 0468023B1, describes, and its disclosure is quoted from this expressly.Specifically, utilize the advantage of the measuring process of microwave to be and highly precisely to carry out untouchable measurement like this for fibrous material.Can avoid the mechanical disturbance of sliver, and avoid because the measurement inexactness that mechanical measurement element inertia causes.
Have been found that with resonator with therein through the relevant variety of issue of fibrous material interaction.Problem occurs in the selection of converted top institute contact material especially, when perhaps converted top guiding is through the hollow resonator the part of process; These problems cause measuring out of true with unstable and make the measurement drift.
Summary of the invention
The present invention seeks to improve the microwave resonator that is used for measuring fibrous material thickness, quality and/or moisture through wherein.
This purpose is the microwave resonator that is used in when beginning type of describing, and characteristic through independent claims 1,10,11,12 and 14 obtains.In addition, this purpose can satisfy its requirement with the textile machine that comprises such type resonator.The characteristic that also has is that task of the present invention provides the dielectric that is used for such resonator.
According to first characteristic of the present invention, resonator has one or more parts of a dielectric (nonconducting volume in other words)-have-and be constructed to and prevent to absorb moisture at least.This is because find, owing to absorb the result of moisture, particularly in that the moisture in the resonator element on the barrier between the fibrous material that passing through and other part of hollow resonator is provided, can not obtain sufficiently stable measurement.Specifically, according to the moisture that insulating part absorbed of those barrier elements or element or guiding converted top, observed the drift of resonance signal.This is because the following fact; Because with respect to fibrous material (for the ε=2-3); Glassware for drinking water has higher dielectric constant (ε=80), even absorb very small amount of moisture, for example in 0.05% scope; Also can produce 40 times of errors, i.e. 2% scope up to amplitude in the measuring accuracy (80/2).But, for example in check drawing frame, measuring accuracy requires the scope 0.1%.
According to this discovery, and, in the zone that fibrous material passes through, construct an insulator at least by this way, promptly prevent to absorb moisture in fact fully according to the present invention.Such design keeps accurately resonance signal and provides about sliver quality, its thickness and/or about the significant information of textile material moisture, even in the long term.
Have been found that effective especially, if polishing or the polishing in the cross section that contacting with fibrous material at least of the rarest insulator.Such technology can prevent that fibrous material from absorbing moisture, especially through the minute crack in the insulating material.The moisture that also can prevent significance degree in the surrounding environment gets into.Therefore, the preferably whole exposed surface polishing or the polishing of insulating material.
A kind of favourable material is that its surface can be polished or polish, and segmentation is carried out at least, and wherein pottery is a representative materials.Have been found that such processing can reduce absorption of water, and therefore cause more accurately with reliably measuring.
The another kind of material of a minimum insulating part can be cloned (Makrolon
) by mould and provided.This synthetic polymer also has been found that in the present invention as a kind of suitable barrier and the induction element of insulator.The mould clone also has relatively economic advantage.On the other hand, the mould clone can not resist wearing and tearing on institute's extend of hope, and therefore suggestion applies (seeing below) with pottery or analog material.
The another kind of method of a minimum insulating part is to use the plastic hybrid manufacturing, and this potpourri can provide desired utmost point low degree or not absorb the character of moisture.
In a kind of particularly advantageous embodiment of the present invention, at least two electrical insulation parts form according to insulating part of the present invention with the interlayer arranged in form jointly.Through guiding fibrous material with contacting of this two-layer at least part combination one side.The interlayer of form is arranged and is had the following advantages like this: towards the cell mesh beyond the fibrous material; Therefore advantageously towards the resonator chamber that seals; Can (for example for example have preferable insulating property (properties); When in the gigahertz frequencies scope, operating, it can have in 10 ℃ to 100 ℃ scopes temperature independent substantially dielectric constant and insulation loss factor), and can guarantee to prevent to absorb moisture towards the cell mesh of fibrous material according to the present invention.Therefore needn't seek separately to provide and satisfy the insulating material best in quality that each side requires.
From such viewpoint advantageous embodiment, to form by plastics towards the cell mesh that fiber is outside, its top is provided with a covering towards fiber.Alternately, should can use pottery manufacturing, also place covering in the above towards the outside cell mesh of fibrous material.Capping unit all advantageously generates most the moisture seal layer under two kinds of situation, advantageously processes with plastics or pottery.This one deck also can polish or polish.According to preferable embodiment, the suitable material of ceramic layer can be mainly by aluminium oxide (Al
2O
3) constitute, its degree is more than 95%, and preferably is 98%.According to another preferable embodiment, principal ingredient can be a silicon nitride, and preferably is Si
3N
4-Y
2O
3In the situation of plastic layer, can adopt polycarbonate to process.
The sealant that prevents moisture can form thin layer or sheet, this means in the situation of a kind of minimum insulator in back to be formed by two cover porcelain plates that are arranged as interlayer.According to above said, can take also mainly to comprise that towards the cell mesh of fibrous material the waterproof aluminium oxide maybe possibly be the sheet form of silicon nitride.
Even when not having to adopt at least two sandwich-like layout, insulator (wherein having at least) still can mainly be made up of aluminium oxide or silicon nitride.
According to second characteristic of the present invention, in the hollow resonator of microwave remote sensor, the dielectric constant of a minimum insulator and/or insulation loss factor are essentially constant in measurement range, in kilo-mega cycles per second (GHz) scope of frequency spectrum.If an insulator is set up in the combination of the part of the such type of some, for example adopt above-described sandwich structure, its combined insulation constant, or its insulation loss factor are essentially constant in above-mentioned scope.It is suitable that said frequency range typically is the 1-10 kilo-mega cycles per second for the resonance signal measurement of fibrous material.Because can change frequency in suitable frequency range so that measure its resonant frequency, if therefore insulating property (properties) is in this frequency range, special on the waveband width of measurement range, it is favourable remaining unchanged basically.
In addition, have been found that it is crucial that a minimum insulator is out of shape indistinctively in temperature variation according to the 3rd characteristic of the present invention.In other words, the material coefficient of thermal expansion coefficient of a minimum insulator should be as much as possible little.This is will cause resonant frequency to measure out of true because have been found that distortion.Preferably thermal expansivity in 10 ℃ to 100 ℃ scopes approximately less than 10; Better less than 5.
According to the 4th characteristic of test, the position of at least one insulator relies on the wall of resonator, and that the thermal expansivity of two elements has basically is onesize.Such layout means, in the situation of thermal expansion, (does not hope), and the shear stress of generation is owing to the high shear strength between each layer is suppressed.
According to the 5th characteristic of the present invention; The thickness of a minimum insulator; Perhaps in the situation that some insulators are worked together, be total thickness in the zone that fibrous material passes through; Should select with mode like this, make the spatial resolution of microwave resonance signal (also by the frequency of operation decision) not be worse than about 1-2 centimetre.The resonator of operation utilizes hollow chamber in about 2-3 kilo-mega cycles per second (GHz) frequency range, might obtain to have the focusing that is approximately 1 centimetre of spatial resolution microwave field by means of one or more insulators with above-mentioned thickness.To produce poorer significantly spatial resolution if can not realize the characteristic (physical size, running frequency) of such focusing resonator.
In the situation about on common machine, running into, the dielectric constant of a minimum insulator is advantageously less than 20, and preferably less than 10; In addition, preferably temperature independent.Less dielectric constant is favourable, though material is selected through careful, the variation of temperature and frequency is still influential for dielectric constant.In such cases, little dielectric constant only causes less deviation in resonance signal, and the result makes resonance signal still have desired precision.
In the preferable embodiment of above said the present invention, a minimum insulator comprises the resonator chamber, is in particular the chamber that prevents dust or this hollow of loose fibres infiltration, wherein possibly change the resonant frequency interference measurement results.
Propose as above, a minimum insulator can preferably design and locate and fibrous material is guided through the resonator chamber passively.According to above said, at least a portion of a minimum insulator forms induction element.Like this, might if remaining resonator chamber is suitably closed,, and on the other hand, fibrous material accurately be guided through the resonator chamber on the one hand so that prevent loose fibres and dust.In addition, suitably select material (seeing above) can obtain the focusing of microwave field, so that space orientation is 1-2 centimetre precision.
A preferably minimum insulator is along the transportation route location of fibrous material through resonator.For example, in this sample loading mode, can make material cover the space between the resonator both sides, extend to outlet from the resonator import with the form of bridge or net.
Utilize in the specific embodiments of this characteristic in the present invention, microwave resonator mainly is made up of hollow, parallel semicolumn, and a space is wherein arranged, and fibrous material is in the horizontal direction transportation of cylinder axis between this.At this, resonance wall portion is become by the dish of the shaped form on the semicolumn edge, and the semicolumn stop surface that faces one another (preferably for straight) is formed by the parallel dielectric that faces one another, and a space is wherein arranged, and between them, pass through fibrous material.
The embodiment of the type is characterised in that a minimum insulator is one or more rectangle pipes, its both ends open.
Export at drawing frame especially, form smooth, hollow circuit cylinder that the resonator chamber can be taked, its edge laterally is (opposite with above-mentioned two semicolumns) of sealing for the converted top transporting direction.In this embodiment, fibrous material passes through the hollow cylindrical chamber in the longitudinal axis direction.Correspondingly, a minimum insulator also extends along the transporting direction of fibrous material, and preferably forms independent or a plurality of cylindrical tubes, its both ends open.The inlet openings that extension can be arranged here preferably is taper.In this situation, fibrous material can give compression to a certain degree, prepares to get into a pair of calender roller subsequently.The embodiment of form possibly be favourable like this, for example, if having only independent converted top, because the round section of pipe can be regulated by the cross section of converted top through resonator.But, in the dimensional measurement scope, pipe section preferably has cylindrical form.
The resonator of more than describing can, for example, be used in the outlet of drawing frame or carding machine is accepted independent sliver from the front drawing frame import.
Because pipe preferably is designed to and can exchanges, and is possible, for example, select to have the pipe that changes internal diameter according to the thickness of sliver.Estimation picks out to regulate and cooperates in use that the microwave signal of pipe is suitable.But, to readjust be unnecessary to the software for calculation of type like this, if in the microwave overlay area, select the quality of different pipes, makes it very approaching.This requires suitably to select the geometric configuration of pipe.
The embodiment of more than describing relates to a kind of situation, wherein has only a pipe through the resonator chamber, this means that the external diameter of relevant pipe is identical, even its internal diameter is changing.In another embodiment, two tubes is set at least, wherein interior pipe is among the outer tube, contacts or does not contact, and for example is pushed into wherein.Fibrous material is through interior pipe.In this situation, the interior pipe exchange ground that also possibly have a different inner diameters uses in the outer tube of same external diameter preferably.Other part cleaning of pipe and maintenance resonator preferably was arranged in the resonator bump pad of the outside, edge that for example is draped by rights in outer tube mainly was used as and accepts.In this embodiment, also can be for the resonance signal computational accuracy of pipe in different perhaps through readjusting software for calculation and/or in the microwave overlay area, arranging interior pipe with same quality.
According to the 6th characteristic of the present invention, one or more insulators preferably are stupalith, charge into the resonator chamber basically.The insulator outside is surrounded by conductive layer or wall, so that microwave field is developed in the inner space.Replace air because the resonator chamber comprises pottery or other suitable material now, might improve spatial resolution or set up very compact resonator.According to the embodiment of utilizing this method, resonator comprises two half-cylindrical insulators, between them, passes through fibrous material.
In addition, be noted that insulator preferably can be resisted wearing and tearing according to an independent feature of the present invention, at least in one side, so that opposing is because the wearing and tearing that produce with fiber friction towards fibrous material.This can be favourable through selecting suitable material to obtain, the pottery that for example mainly is made up of aluminium oxide.
The present invention is relevant for textile machine equally, the carding machine, drawing frame or the combing machine that one of particularly have at least once in the microwave resonator of discussing.Equally, the present invention also comprises the insulator that specifically is used for these microwave resonators.Other machine and the apparatus that also can be used in addition, relevant weaving department according to microwave resonator of the present invention.
The Characteristics of Development that the present invention also has will be described in Rights attached thereto require.
Description of drawings
Below, the present invention will make an explanation by means of accompanying drawing in more detail:
Fig. 1 is the microwave resonator according to first embodiment, according to the sectional view of I-I line among Fig. 2;
Fig. 2 a, 2b, 2c are side-looking, longitudinal profile and the top view of microwave resonator pipe;
Fig. 3 is the reduced scale view (fine hair guiding nozzle is removed) of microwave resonator among Fig. 1;
Fig. 4 is according to the microwave resonator of second embodiment (like the same view of Fig. 1);
Fig. 5 is the microwave resonator top view according to the 3rd embodiment;
Fig. 6 is microwave resonator side cutaway view among Fig. 5 (along a converted top FB transporting direction vertically the vertical section through resonator);
Fig. 6 a is the insulator sectional view of sandwich structure;
Fig. 7 is according to the rear view of Fig. 5 and 6 microwave resonators (along the section of I-I line among Fig. 5);
Fig. 8 is according to the microwave resonator of the 4th embodiment (like the same view of Fig. 5);
Fig. 9 is the exploded view according to the 5th embodiment microwave resonator;
Figure 10 is the microwave resonator according to the 6th embodiment.
Embodiment
The sectional view and the top view that show first example of microwave resonator 30 embodiments at Fig. 1 and Fig. 3.Resonator 30 is arranged in plate shape carrier module 21.For this purpose, in the embodiment of being illustrated, carrier module 21 has central recess 32, as visible among Fig. 3, takes cylindrical shape.At the top of recess 32 dividing element 46 is set; In the embodiment of being illustrated, it takes smooth cylindrical plate shape, and has bolt hole 36a at its edge, and they are aimed at hole 36b corresponding on carrier module 21.As shown in Figure 3, hexagon head bolt 36 can screw in these holes 36a, 36b, and they respectively have internal thread, (in Fig. 1, does not show bolt) so that dividing element 46 is fixed on the carrier module 21.In an alternative scheme (not illustrating with figure), dividing element 46 can be engaged in the carrier module 21, and parallel with the end face of carrier module 21.
The dividing element 46 that is placed on recess 32 tops is set up resonator chamber 31 for microwave resonator 30, closes element 58 microwaves by means of lotus root and injects in this chamber, can from the chamber, penetrate and close element 59 by means of lotus root, sees Fig. 3.These lotus roots close element all can, for example, take the form of rod-shaped elements 58,59, through respective aperture in dividing element 46 from outside outstanding the entering in the resonator chamber.Inside lotus root is closed element 58 and is connected to microwave generator 56 (schematically showing) through cable 57, and its frequency can change by means of the control module (not shown), and this unit preferably is a microprocessor.Outside lotus root is closed element 59 and is connected in the computing unit (not shown) through cable 55 successively.Outwards lotus root is closed element 59 and is received in the microwave signal that takes place in the resonator chamber 31, and with its transmit computing unit in case the decision resonant frequency with in the relevant deration of signal in the time in succession subsequently.On the basis of this information, can determine the quality or the thickness of sliver, perhaps pass through resonator chamber 31 sliver moisture constantly.
Take to be essentially hollow cylindrical and insert in the resonator chambers 31 by the insulator 60 that non-conducting material is processed the conduit form.Insulator 60 is presented among Fig. 2 a-2c more accurately, has jut at its each end, and it is positioned in the opening of dividing element 446 together with this jut on one side, and is in the opening of carrier module 21 at another side.Converted top FB only is schematically depicted as the arrow form, and is straight through resonator chamber 31, then through having the sliver funnel 26 of nozzle form end part, directly gets into two calender roller 11, the compression slots between 12 subsequently.Sliver funnel 26 is by the annular ring clamping in carrier module 21, and has annular groove for this reason.
Conduit or insulator 60 are processed by dielectric constant in the frequency spectrum kilo-mega cycles per second zone in measurement range or all constant basically material of insulation loss factor.In addition, dielectric constant or insulation loss factor remain unchanged in the temperature range (typically between 20 ℃ and 70 ℃) that runs on the common machine basically.This means when resonator 30 is idle, i.e. insertion from the end of sliver output to new converted top, though interval time length, resonant frequency seldom changes, and therefore microwave remote sensor need not implemented to recalibrate.
According to a characteristic of the present invention, insulator 60 is so constructed, and makes its distortion indistinctively under influence of temperature variation, promptly has low thermal coefficient of expansion.In addition, the material of insulator 60 preferably is wear-resisting type.
According to the characteristic that the present invention also has, insulator 60 is constructed to and can prevents to absorb moisture.Can adopt various technology to reach this purpose.In a kind of technology, towards insulator 60 surface finish or the polishing of inside so that prevent from environment or converted top FB in absorb moisture through crack small in the material.Have been found that and have aluminium oxide (Al
2O
3) be the suitable material that reaches this purpose as the stupalith of principal ingredient.
If correctly select, also can adopt material undressed, anti-moisture.Has aluminium oxide (Al
2O
3) can unprocessedly use as the stupalith of principal ingredient.Also possibly adopt in some cases such as silicon nitride Si
3N
4-Y
2O
3Pottery.
Have been found that aluminium oxide (Al
2O
3) wearing and tearing are also had resistibility, and have in addition under common service condition and on the survey frequency in the about 1-10 kilo-mega cycles per second scope less than 10 dielectric constant.At about 20-100 ℃ temperature range internal linear expansion coefficient also less than 10, and at Si
3N
4-Y
2O
3Situation be not more than 3.
Visible in Fig. 1, fine hair guiding nozzle 23 is positioned at dividing element 46 tops, and dividing element has the hole 70 of the fine hair nozzle insert 24 that is provided with through the clamping of centralized positioning pin (not shown).
In the one side towards insulator or conduit 60, the edge of opening of fine hair nozzle 24 is made fillet, so that unlikely damage conduit 60 when guaranteeing that converted top FB inserts.Fine hair guiding nozzle 23 so that so mode is hinged, can pivot it in the double-head arrow direction, at carrier module especially when sliver stops up in nozzle.
Dividing element 46 adheres to first electrical-heating film 80 in the one side towards resonator 30 outsides, and the second heating film 85 is attached to the opposite of carrier module 21, and outside.Two heating films 80,85 are connected to the thermal source that does not show through line 81,82 or 86,87.The power of heating preferably is controlled, so that remain on 70 ℃ (for inlet sensors greatly about 35 ℃) in the sensor of being illustrated outlet.For this purpose, should dispose a temperature measurement unit (not shown); They can be arranged on, and for example, are arranged in one or more holes of carrier module 21 1 sides and extend near the resonator chamber 31.The heat insulation sheath can be set surround, for example, whole carrier module (the suitable opening with fibrous material) so that prevent influence of temperature variation in the environment, also can be avoided heat-energy losses simultaneously.
Can implement through the part that surrounds resonator chamber 31 with the made of low thermal coefficient of expansion as temperature controlled additional or alternative measure; For example; Steel with high proportion of nickel composition; Being preferably the N136 steel, for example is Invar
steel.
The inwall of resonator 30 can have the coating of conduction, and hypoxemia copper for example is because dividing element 46 has relatively low conductance with 21 of carrier modules.There is not such conductive coating that the microwave resonance of enough signal intensities not necessarily can take place.For preventing the corrosion of coating, can lay additional corrosion-resistant finishes at the top, for example be gold or silver.Alternately, can adopt pottery or comprise the pottery compound substance as coating or coverture.
The resonator 30 that has insulator 60 can be advantageously provided after drawing frame.The villus fiber that leaves drawing frame forms sliver FB, inserts resonator 30 then.As replacement scheme, resonator 30 can be arranged between carding machine and the drawing frame, and the fibrous material that in this situation, leaves carding machine just gets into the drafting part in drawing frame without relay storage.
Fig. 4 illustrates another embodiment according to microwave resonator of the present invention, and unique difference of itself and Fig. 1 and Fig. 3 is to adopt two pipes of arranging with one heart as insulator 160,161, promptly in pipe 160 and outer tube 161.In pipe or internal insulator 160 identical with according among Fig. 2 a-2c basically, outer tube or outer insulator 161 are short and be installed on the ladder annular incision 163 in dividing element 46 or the carrier module 21.When internal insulator 160 exchanges, outer insulator 161 can prevent that dust or moisture from infiltrating the non-central zone of resonator chamber 31, and its result can save the corrosion-resistant coating on the resonator inwall.When employing had the internal insulator of different inner diameters, pipe 160 was favourable in the exchange, for example when the fiber of present changes.In such situation, the total quality of inside and outside insulator 160,161 is essentially constant in the microwave coverage in resonator chamber 31, because the resonant frequency in this situation when idle remains unchanged, and does not need to recalibrate.The inwall of outer tube 161 preferably is a water proofing property, for example eliminates small crack and/or through laying water-resistant layer (such as Al through polishing or polishing
2O
3).
Fig. 5-7 illustrates another microwave resonator 100 (not having microwave generator in the demonstration), and its place ahead is provided with funnel 316 and calender roller 335,336, and wherein a pair of calender roller is extracted a converted top FB out at least through funnel 318 and resonator 300.Converted top FB in Fig. 5 and Fig. 6 (wherein having one at least) is only represented by arrow; Converted top FB is expressed as the cross section of a large amount of individual fibers combinations in Fig. 7.If the fiber FB of some carries through resonator 300 their preferably connections mutually.Fig. 7 does not illustrate funnel 318 or calender roller 335,336.Cylinder 335,336 also can be used as the haulage drum of drawing frame, makes them carry out dual-use function (carrying through resonator and traction).
Also possibly not adopt funnel 318 and adopt other sliver induction element, such as vertical and/or horizontally disposed offset arm, the latter also can, for example, have the arcs of recesses guiding surface when getting into resonator so that a minimum converted top FB aims at.In addition, calender roller 335,336 can curve the angle of 90 ° or any other requirement.
Resonator has the semicolumn 301,305 of two sealings, hollow, is separated by slit 310, and wherein the outer wall 302,306 of semicolumn 301,305 is processed for metal.Inner wall structure towards converted top FB is an insulator 303,307 in the present invention.The material of these sheet-like insulator 303,307 preferably by, for example, principal ingredient is that the suitable material of material or other of aluminium oxide constitutes, and is wherein above still effective about the explanation of conduit 60.Microwave resonance takes place in wall portion 302, internal resonance device chamber between 306.The thickness of insulator 303,307 is so selected, and makes the position resolution of microwave resonance signal not be worse than about 1-2 centimetre.Equally also be applicable to design according to the insulator 60,160,161 of embodiment among Fig. 1-4.
Sheet-like insulator 303,307 advantageously is designed to and can exchanges, and easily for example in situation about damaging, changes.For example, if insulator 303,307 is glued at the side of resonance wall 302 or 306, they still can relatively easily be changed later in cleaning bonding agent position.
Fibrous material FB passes through along the fillet 309 of resonance wall 303,307 passively, and further advances along insulator 303,307, sees Fig. 7.Because the interior zone of semicolumn 301,305 seals for surrounding environment, therefore can not let entering such as dust, loose fibres.Lotus root close microwave advance 358 with go out 359 element and infiltrate these interior zones, but in Fig. 6, illustrate for for the purpose of clear.
The direction that airflow 350 is moved in converted top or converted top FB both sides with converted top is passed slit 310; This is expressed as dotted line in Fig. 3 and Fig. 4, and in Fig. 5, is expressed as circle, wherein is painted with cross (direction of airflow is to leave the observer).Airflow or a fluid stream 350, they also have several along the resonator width distribution, can carry out several kinds of functions.On the one hand they guarantee that the Temperature Distribution in slit 310 is even basically, and they can prevent on the other hand, particularly, and in the outlet of resonator 300 and/or to the fiber accumulations of calender roller 335,336 transition positions on insulator 303,307.Such fiber accumulations will be twisted the effect of resonator 300, thereby cause measuring out of true.
As at insulator 60, consider aspect 160 similar, insulator 303,307 can polish or polish, and gets into so that prevent moisture in the one side towards converted top FB at least.It is effective at this equally more than to relate to other explanation of selecting about material.
In addition, also be favourable if insulator 303,307 is processed from the interlayer of some or part, as among Fig. 6 a shown in the enlarged drawing.Accessory constituent towards individual hollow semicolumn 301,305 can have best insulating property (properties) at this, such as in the gigahertz frequencies scope, and constant basically dielectric constant and constant basically insulation loss factor when temperature variation.
Part 307b towards slit 310 specifically can so construct, and can prevent basically because fibrous material absorbs moisture and wearing and tearing through causing.Correspondingly; For example might select (a kind of compound carbonizing hydrogen stupalith such as TMM
; Have very good temperature stability and particularly dielectric constant; Stable especially when temperature variation) pottery or plastics (such as Makrolon
) as towards hollow semicolumn 30l, 305 part 307a; Perhaps select plastic hybrid; And can constitute by pottery towards the part 307b (having interlayer or plate-like shape) of slit 310, its principal ingredient is an aluminium oxide.This pottery also should polish or polish.
The embodiment that is noted that all insulators of illustrating in the drawings can use two-layer or more interlayer to constitute.
(section as in Fig. 6 is represented according to the embodiment of the microwave resonator 400 of Fig. 8; Its forward and backward element all omits) be different from the insulator 403,407 that is that is shown among Fig. 5-7 and extend on the whole delivered length of fiber FB through resonator 400; And on its import and endpiece 409, process fillet, so that avoid fibrous material to turn to suddenly.Resonance wall 402,406 is smooth area supported in this embodiment, in the above can advantageously bonding insulator 403,407.Insulator 403,407 can be used like the same materials of insulator 303,307 and constitute and handle with quadrat method.
Fig. 9 shows the exploded view of microwave resonator 500 embodiments, and this resonator has two resonance walls 502,506 according to the present invention, and is in the insulator 503 between them, preferably is made up of stupalith.Resonator 500 also has two hollow semicolumns 501,505 that separated by insulator 503 thickness, and they form resonator chamber 531 together with insulator 503.Insulator 503 is on the surrounding edge of associated wall portion 502,506, and the latter can connect with bolt by means of the hole that schematically shows.Insulator 503 advantageously has the import and the outlet edge 509 of fillet.Do not show that in Fig. 9 antenna connects.
Figure 10 illustrates half according to another embodiment of microwave resonator 600 of the present invention.This resonator has two insulators 603,607 that are shaped as semicolumn, and preferably constitutes with stupalith, and is through fibrous material FB, the same as the resonator in Fig. 5-9 between them.Curved outer surface at insulator 603,607 is laid conductive layer, for example is made up of copper.In alternative scheme, adopt the metallic walls of rigidity to replace coating.Coating or wall can add etch-proof protective seam on outside surface, such as the copper layer; This coating is not an imperative, because microwave field takes place in resonator 600 inner spaces.Insulator 603,607 comprises antenna junction 608a, 608b, so that lotus root is closed the microwave turnover.(polishing, polishing, coating etc. see above) preferably taked in the measure that prevents the moisture entering in the one side towards fibrous material.
Through surrounding the resonator 600 of two solid insulators 603,607 (each insulator has conductive layer or a wall in its outside), microwave field can fibrous material through with the zone of measuring in focus on several millimeters.Adopt the spatial resolution of the resonator acquisition of such type therefore can be increased to, because of it comprises air rather than solid insulating material above the resolution among Fig. 5-9.In addition, the structure of resonator is because it can be very compact according to design of the present invention.
Relevant with other microwave resonator the explanation about material type and possible surface-treated described above also can be applied to insulator 603,607.Insulator 603,607 therefore can, for example, constitute by the semicolumn of bigger stupalith or solid plastic, its dielectric constant is stable and low as much as possible for temperature and frequency, they be waterproof and mainly be wear-resisting aluminium oxide ceramics layer.
More than all, in the said embodiment, between insulator and resonance wall, have surface in contact, they advantageously are used as, at least a portion, adhesive surface.Preferably adopt bonding agent at this with less absorption moisture tendency.According to a characteristic of the present invention; The thermal expansion of a minimum insulator and a minimum resonance wall has closely similar amplitude, consequently at insulator and the resonance unlikely relative shear stress that causes crack and leakage (thereby make reading incorrect) between the wall.
In addition, if the loss that certainly takes place in a minimum non-conductive insulator according to the present invention with according to each characteristic of the present invention is low as much as possible, be exactly that insulator is as much as possible near desirable insulator.
Have the microwave generator of describing microwave resonator can, for example be applied on the framework of drawing frame with conditioned or non-conditioned.On the drawing frame of conditioned, microwave remote sensor both can be arranged on the drawing frame front also can be in the back.This invention for example, can be used on carding machine or combing machine without restriction.
Claims (30)
1. one kind is used for or is contained in the microwave resonator on the textile machine, is used for connecting the surveying instrument of measuring fibrous material (FB) quality and/or water cut, and this fibrous material is continuously through resonator chamber (31; 331; 431; 531), it is characterized in that, pass through resonator (30 at fibrous material (FB); 300; 400; 500; An insulator (60 is set in the zone 600) at least; 160,161; 303,307; 403,407; 503; 603,607), and with a minimum insulator (60; 160,161; 303,307; 403,407; 503; 603,607) contact with fibrous material (FB) one section is polished or polishes, and they are so constructed so that prevent to absorb moisture.
2. according to the microwave resonator of claim 1, it is characterized in that, have a minimum insulator (60 of polishing or polishing section; 160,161; 303,307; 403,407; 503; 603,607) constitute by stupalith.
3. according to the microwave resonator of claim 1, it is characterized in that a minimum insulator (60; 160,161; 303,307; 403,407; 503; 603,607) process by plastic hybrid.
4. according to the microwave resonator of claim 1, it is characterized in that a minimum insulator (60; 160,161; 303,307; 403,407; 503; 603,607) constitute by at least two non-conductive parts (307a, 307b) that form sandwich construction, and be with guiding contiguously to pass through along one of at least two parts (307a, 307b) at this place's fibrous material (FB).
5. according to the microwave resonator of claim 4, it is characterized in that said sandwich construction comprises that a plastic part (307a) and one are placed on the former top and towards the cap piece (307b) of fibrous material (FB).
6. according to the microwave resonator of claim 4, it is characterized in that said sandwich construction comprises that a ceramic part (307a) and one are placed on the former top and towards the cap piece (307b) of fibrous material (FB).
7. according to the microwave resonator of claim 6, it is characterized in that cap piece (307b) is taked the form of sealant.
8. according to the microwave resonator of claim 7, it is characterized in that sealant is ceramic layer or plastic layer.
9. according to the microwave resonator of claim 8, it is characterized in that ceramic layer mainly is made up of aluminium oxide or silicon nitride, plastic layer comprises polycarbonate.
10. according to the microwave resonator of claim 1, it is characterized in that a minimum insulator (60; 160,161; 303,307; 403,407; 503; 603,607) dielectric constant and/or insulation loss factor are constant in the 1-10GHz measurement range.
11. the microwave resonator according to claim 1 is characterized in that, at least one insulator (60; 160,161; 303,307; 403,407; 503; 603,607) under influence of temperature variation and indistinctively, be out of shape.
12. the microwave resonator according to claim 1 is characterized in that, said insulator (60; 160,161; 303,307; 403,407; 503; 603,607) a contiguous at least resonance wall (21,46; 302,306; 402,406; 502,506), a minimum insulator (60; 160,161; 303,307; 403,407; 503; 603,607) and minimum one resonance wall (21,46; 302,306; 402,406; 502,506) thermal expansivity is same amplitude.
13. the microwave resonator according to claim 1 is characterized in that, at least one insulator (60; 160,161; 303,307; 403,407; 503; 603,607) total thickness is so selected, and makes the spatial resolution of microwave resonance signal not be worse than about 1-2 centimetre.
14., it is characterized in that a minimum insulator (60 according to each microwave resonator in the claim 1,10,12 and 13; 160,161; 303,307; 403,407; 503; 603,607) dielectric constant when when the machine works temperature range is typically between 20 ℃ and 70 ℃ less than 20.
15. the microwave resonator according to claim 14 is characterized in that, a minimum insulator (60; 160,161; 303,307; 403,407; 503; 603,607) dielectric constant is irrelevant with its temperature basically.
16., it is characterized in that a minimum insulator (60 according to each microwave resonator in the claim 1,10,12 and 13; 160,161; 303,307; 403,407; 503; 603,607) dielectric constant when when the machine works temperature range is typically between 20 ℃ and 70 ℃ less than 10.
17. the microwave resonator according to claim 16 is characterized in that, a minimum insulator (60; 160,161; 303,307; 403,407; 503; 603,607) dielectric constant is irrelevant with its temperature basically.
18., it is characterized in that a minimum insulator (60 according to each microwave resonator in the claim 1,10,12 and 13; 160,161; 303,307; 403,407; 503; 603,607) at resonator (30; 300; 400; 500) hollow region of inner sealing.
19., it is characterized in that at least one insulator (60 according to each microwave resonator in the claim 1,10,12 and 13; 160,161; 303,307; 403,407; 503; 603,607) design and be set to guide passively fibrous material (FB) through resonator chamber (31; 331; 431; 531).
20., it is characterized in that a minimum insulator (60 according to each microwave resonator in the claim 1,10,12 and 13; 160,161; 303,307; 403,407; 503; 603,607) the most of extension up to resonator from the resonator import exports.
21., it is characterized in that resonator is mainly by two hollows, parallel semicolumn (301 according to each microwave resonator in the claim 1,10,12 and 13; 305) form; Have the space between them, arrange or arrange more fibers form with one through this space fibrous material (FB) and carry in the direction transverse to cylinder axis, wherein semicolumn (301; 305) pass through said insulator (303,307 in the side that faces one another; 403,407) sealing.
22., it is characterized in that a minimum insulator (303,307 according to each microwave resonator in the claim 1,10,12 and 13; 403,407) take plate-like shape and being arranged on along fibrous material (FB) through resonator chamber (331; 431) on the landline.
23., it is characterized in that a minimum insulator (503) is taked the form of independent or a plurality of rectangle pipes, its both ends open according to each microwave resonator in the claim 1,10,12 and 13.
24. according to each microwave resonator in the claim 1,10,12 and 13; It is characterized in that; Resonator seals the resonator chamber (31) of a cylindrical and border seal basically, wherein in said resonator chamber, can insert a minimum insulator (60 in its longitudinal axis direction; 160,161).
25., it is characterized in that a minimum insulator (60 according to each microwave resonator in the claim 1,10,12 and 13; 160,161) take the form of independent or a plurality of cylindrical tubes, its both ends open.
26. according to each microwave resonator in the claim 1,10,12 and 13; It is characterized in that; A said minimum insulator is set to alternately to insert the different pipes (60 in the resonator chamber (31); 160), wherein these pipes have same external diameter basically, but its internal diameter is different mutually.
27. according to each microwave resonator in the claim 1,10,12 and 13; It is characterized in that; A said minimum insulator is set to insert simultaneously the two tubes (160,161) of resonator chamber (31), and its middle external tube (161) surrounds interior pipe (160).
28. according to each microwave resonator in the claim 1,10,12 and 13; It is characterized in that; Different pipes (60) or pipe combination (160,161) that a said minimum insulator is set to alternately to insert resonator chamber (31) have same basically total quality in the microwave overlay area.
29. a textile machine is characterized in that, has a microwave resonator (30 according to one of above claim at least; 300; 400; 500; 600).
30. the textile machine according to claim 29 is characterized in that, said textile machine is carding machine, drawing frame or combing machine.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10334144.7 | 2003-07-01 | ||
| DE10334144A DE10334144A1 (en) | 2003-07-01 | 2003-07-01 | Microwave resonator, textile machines with such a resonator and room unit for such a resonator |
| PCT/EP2004/051175 WO2005003747A1 (en) | 2003-07-01 | 2004-06-21 | Microwave resonator, textile machine comprising a resonator of this type, and a dielectric for this resonator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1816739A CN1816739A (en) | 2006-08-09 |
| CN1816739B true CN1816739B (en) | 2012-03-21 |
Family
ID=33521418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2004800189592A Expired - Fee Related CN1816739B (en) | 2003-07-01 | 2004-06-21 | Microwave resonator, textile machine comprising a resonator of this type, and a dielectric for this resonator |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN1816739B (en) |
| DE (2) | DE10334144A1 (en) |
| WO (1) | WO2005003747A1 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006046713A1 (en) * | 2006-10-02 | 2008-04-03 | Rieter Ingolstadt Spinnereimaschinenbau Ag | Instrument measuring weight per unit length or moisture of running fibrous strand before e.g. carding, combing or spooling, is based on microwave resonance |
| DE102006062339A1 (en) * | 2006-12-22 | 2008-07-03 | TRüTZSCHLER GMBH & CO. KG | Microwave resonator for or on a textile machine, esp. Carding machine, track, comber o. The like. |
| DE102007039067A1 (en) * | 2007-08-17 | 2009-02-19 | TRüTZSCHLER GMBH & CO. KG | Device on a comber for monitoring Kämmlingsanteils |
| EP2743686A4 (en) * | 2011-08-11 | 2015-04-08 | Oji Holdings Corp | Apparatus for measuring moisture content amount and/or coating amount of coating layer of sheet-shaped base material |
| DE102013100644B4 (en) * | 2013-01-23 | 2020-04-30 | Rieter Ingolstadt Gmbh | Microwave resonator for a textile machine |
| DE102014109651B4 (en) * | 2014-07-10 | 2023-05-11 | Rieter Ingolstadt Gmbh | Microwave cavity resonator and spinning preparation machine equipped therewith |
| TWI817720B (en) * | 2021-10-20 | 2023-10-01 | 桓達科技股份有限公司 | Tuning Fork Coupled Microwave Sensor |
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| US5351120A (en) * | 1993-07-12 | 1994-09-27 | American Air Liquide | Spectroscopic cell design |
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| DE10306217B4 (en) * | 2003-02-13 | 2014-06-26 | Rieter Ingolstadt Gmbh | Microwave resonator, textile machine with such a resonator and room unit for such a resonator |
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- 2003-07-01 DE DE10334144A patent/DE10334144A1/en not_active Withdrawn
-
2004
- 2004-06-21 DE DE112004001115.9T patent/DE112004001115B4/en not_active Expired - Fee Related
- 2004-06-21 CN CN2004800189592A patent/CN1816739B/en not_active Expired - Fee Related
- 2004-06-21 WO PCT/EP2004/051175 patent/WO2005003747A1/en active Application Filing
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Also Published As
| Publication number | Publication date |
|---|---|
| DE112004001115D2 (en) | 2006-05-11 |
| DE10334144A1 (en) | 2005-01-20 |
| WO2005003747A1 (en) | 2005-01-13 |
| DE112004001115B4 (en) | 2017-11-23 |
| CN1816739A (en) | 2006-08-09 |
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