EP0128208B1 - Chambre de chauffe pour fils continus - Google Patents

Chambre de chauffe pour fils continus Download PDF

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Publication number
EP0128208B1
EP0128208B1 EP84900279A EP84900279A EP0128208B1 EP 0128208 B1 EP0128208 B1 EP 0128208B1 EP 84900279 A EP84900279 A EP 84900279A EP 84900279 A EP84900279 A EP 84900279A EP 0128208 B1 EP0128208 B1 EP 0128208B1
Authority
EP
European Patent Office
Prior art keywords
thread
heating chamber
insert
saturated steam
chamber according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP84900279A
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German (de)
English (en)
Other versions
EP0128208A1 (fr
Inventor
Walter Runkel
Erich Lenk
Karl Bauer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Oerlikon Barmag AG
Original Assignee
Barmag AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE19833308251 external-priority patent/DE3308251A1/de
Application filed by Barmag AG filed Critical Barmag AG
Publication of EP0128208A1 publication Critical patent/EP0128208A1/fr
Application granted granted Critical
Publication of EP0128208B1 publication Critical patent/EP0128208B1/fr
Expired legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
    • D02J13/00—Heating or cooling the yarn, thread, cord, rope, or the like, not specific to any one of the processes provided for in this subclass
    • D02J13/001—Heating or cooling the yarn, thread, cord, rope, or the like, not specific to any one of the processes provided for in this subclass in a tube or vessel
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
    • D02J13/00—Heating or cooling the yarn, thread, cord, rope, or the like, not specific to any one of the processes provided for in this subclass
    • D02J13/005—Heating or cooling the yarn, thread, cord, rope, or the like, not specific to any one of the processes provided for in this subclass by contact with at least one rotating roll

Definitions

  • the invention relates to a heating chamber for running threads.
  • This heating chamber is suitable for the treatment of a thread with saturated water vapor (saturated steam) under increased pressure.
  • the advantage of heat treatment of a running thread, especially multifilament chemical thread with saturated steam instead of strongly overheated steam or hot air, is that the saturated steam has a large latent heat content (heat of vaporization). Because of the very high heat transfer coefficients in the case of condensation - in contrast to convection, radiation or direct heat conduction - strong heating of the thread at high thread speeds and short dwell times is made possible. Saturated steam treatment also results in a uniform temperature distribution and good temperature stability over the entire length of the treatment section.
  • the treatment path can also be specified as desired by connecting several treatment chambers in series, since the required uniformity and constancy of the treatment temperature for several treatment chambers can be ensured by adjusting the pressure and by pressure equalization between the treatment chambers - with simultaneous removal of inert components.
  • the losses at the entrance and exit of the treatment section can be kept low and lower than with comparable air heating sections if the thread entry and thread exit locks are designed accordingly.
  • the thread is cooled at the thread outlet by evaporating the previously condensed water. If necessary, the thread can also be moistened in the area of the thread outlet.
  • heating chambers with saturated steam treatment are particularly suitable for those thread treatments in which a large amount of heat is transferred to the thread at high thread speed within a relatively short dwell time and then has to be immediately removed again, as z. B. in the case of synthetic fibers in spinning processes, spin-stretching processes, spin-texturing or spin-stretch texturing processes and stretch-texturing, draw-twist, stretch-winding and other stretching processes is the case.
  • labyrinth seals and gap seals at the thread inlet and thread outlet are already known. While labyrinth seals have generally proven to be unsuitable, since the need for undisturbed thread running cannot be reconciled with the need to provide a tortuous outlet path to avoid loss of heating medium. Gap seals are indeed suitable. With them, a large gap length causes a sufficiently large reduction in losses. However, with increasing gap length and small gap width, threading, especially pneumatic threading, becomes an insurmountable problem.
  • the present invention is based on a heating chamber, as described in the parallel European patent application No. 83 11 25 64.6 (EP-A-114 298).
  • the thread channel of the heating chamber is formed here between two parts which are easy to manufacture in terms of production technology and which lie on one another with their surfaces in their operating position and are movable relative to one another between the operating position and a threading position.
  • the surfaces are matched to one another in such a way that the saturated steam does not escape through the narrow joint formed between them (closing surfaces).
  • the gap used to guide the thread is formed by the fact that each surface has a recess, groove, step or similar warp (surface deformation) perpendicular or transverse to the direction of movement, which extend along the thread path and are straight or curved, but have a geometric shape cover up.
  • warps of the surfaces form a wide gap suitable for inserting the thread and also for pneumatic threading or an insertion slot (threading position) in the one relative position of the surfaces and a narrow thread guide gap in the other relative position, which is narrow enough especially in the thread inlet and thread exit is to avoid impermissible pressure losses in the heating chamber, which is shaped in such a way that a targeted pressure reduction occurs along the gap (operating position).
  • the thread channel that arises in the operating position has a gap width of, for example, at the thread input and / or thread output. B. 0.2 to 0.5 mm width, so that although a running thread can be guided undisturbed, the losses of the heating medium are low.
  • the gap width in particular in the thread outlet area, can vary over the gap length.
  • Relaxation chambers or vacuum chambers can also be connected to the gap in order to obtain a specific pressure relaxation gradient along the course of the thread. In the The dimensioning of the gap width takes into account the diameter and the number of threads guided in a thread channel within certain limits.
  • the thread channel In the threading position, in which the heating chamber is out of operation and not under pressure, the thread channel is expanded in an embodiment of the heating chamber, in which each of the closing surfaces has a groove or a step, so that pneumatic threading of the thread is readily possible is.
  • the thread channel In another embodiment of the heating chamber, the thread channel is opened in the threading position on one long side, so that an insertion gap is created through which a running thread - transverse to its direction of movement - can be inserted into the thread channel from the side.
  • the heating chamber can be provided with recesses in the central region of its gap length, so that the clear width of the thread channel widens here. This can be useful to allow some ballooning of the thread and / or to avoid or reduce wall friction of the thread.
  • the surfaces can be flat or slightly curved in the thread running direction and / or curved transversely to the thread running direction.
  • the surfaces of a body do not necessarily have to lie in one plane. They can also lie on two levels that intersect in the area of the fault and form a step.
  • the gap width of the thread channel is about 0.2 to 0.3 mm, which means a thread of 167 dtex without harmful wall friction with only minor losses and a gap length of only 60 mm at temperatures of 220 ° C, corresponding to a pressure of 24 bar can be treated with saturated steam.
  • this solution has the advantage that it becomes possible to apply sufficient contact forces between the closing surfaces in order to avoid impermissible losses of the saturated steam or inadmissible drop in the saturated steam pressure.
  • the decisive advantage lies in the fact that at least one of the bodies on its front and back is exposed to the heating medium in a defined surface area opposite the thread channel, so that in addition to the pressure, there is also heating from the back and thus an equalization of the temperature results. It has been found that the thread channel, because of its small width, has only such a small surface area that the amount of heat required to heat the heating chamber and to compensate for the heat losses cannot be transferred through this surface.
  • the provision of an additional heating surface from the rear with the same heating medium and the same heating pressure, i. H. with the same temperature not only causes additional compensation for heat losses, but also makes the temperature more uniform over the cross-section of the heating chamber.
  • the heating chamber consists of an outer, rigid body, which encloses an inner body in the form of a jacket.
  • It can be z. B. act as a rigid outer tube that surrounds an inner cylinder as a jacket.
  • it can also be a - in cross-section - U-shaped rigid housing, between the parallel flanks of which one or more plates are stacked, the thread channel being formed between the plates and / or between a plate and an inner wall of the housing.
  • the pressure zone to which saturated steam is applied also serves to heat the housing.
  • the measure according to the invention also makes it possible to manufacture the inner body and outer body with greater tolerances.
  • the heat transfer takes place on the one hand through metallic contact between the inner body and the outer body, but on the other hand in the areas in which a metallic contact does not take place due to play, through condensation of the saturated steam on the walls of the inner body on the one hand and the outer body on the other.
  • This ensures that the inner body and outer body are heated to the same temperature without any special regulation being necessary for this. Due to the improvements in stability achieved, the theory could be established that any local condensate formation, e.g. B in the form of drops, which is noticeable when the heating and the heating chamber are in operation due to significant temperature jumps.
  • excessive heating leads to the saturated steam being heated above the boiling point of the water at the specified pressure becomes.
  • the area of the pressure zone that is effective for the contact pressure is made as large as the area parallel to it in the heating area of the thread channel.
  • the pressure forces exerted on the body in the heating area and in the pressing zone are balanced, so that the body floats between the heating area and the pressing zone.
  • the area of the pressure zone which is effective for the pressing pressure is larger than the area of the heating area, so that the closing surfaces which enclose the thread channel do not have to be pressed against one another by an additional force.
  • the heating chamber according to the invention can be formed between two plates, each of which is provided with an identical step, the thread channel being enclosed by the steps. In this case, the saturated steam also exerts a force perpendicular to the steps during operation. Therefore, the pressing force caused by the pressing zone should produce a frictional force that is greater than these opening forces.
  • the two bodies forming the heating chamber have an essentially identical, high temperature in the region of the thread channel.
  • the heat transfer on the front of one body is not limited to the narrow thread channel.
  • sealing lips are arranged on both sides and along the thread channel, which are spaced apart and define a sealing area.
  • the sealing lips are preferably inserted in grooves, the upper edge of which they protrude slightly in the area of their elasticity in such a way that, by pressing on the closing surfaces with the intended contact pressure, the closing surfaces essentially receive surface contact or form a close joint, into which saturated steam penetrates and both closing surfaces heat up evenly .
  • a defined heating zone is created on both sides of the thread channel in this parting line.
  • the success of this measure has shown that the surface of the thread channel is not large enough to transmit the heat required to heat the heating chamber.
  • the heating zone material surrounding the thread channel can be heated by the heating zone surrounding the thread channel. This happens because saturated steam can penetrate into the parting line between the closing surfaces, which condenses out there and in the process gives off its heat of condensation via the closing surfaces enclosed by the sealing strips to the two bodies delimiting the thread channel.
  • a defined heating of the interfaces is effected on the front and on the back of at least one of the bodies. This is particularly advantageous if one body surrounds the other in the form of a jacket and the inner body contains the thread groove and the heating zone on one side and the pressure zone on the other side.
  • the outer body is also heated at two points.
  • further heating areas can be present in one or both bodies.
  • the task of keeping the temperature gradient within the heating device small, in particular during heating, is also served in that at least one of the two bodies, preferably the non-moving body, is given a preheating channel - also referred to in the context of this application as a "detour channel" - which is preferred extends along the heating chamber and which is also fed with saturated steam.
  • the heating chamber can be connected to a saturated steam generator in such a way that the saturated steam first reaches the preheating duct and from there the thread duct on the one hand and the pressure zone on the other hand.
  • a valve can be provided between the preheating duct and the heating chamber.
  • it will be useful to pressurize the counter surface after opening and closing the heating chamber before the valve to the heating chamber is opened again and saturated steam is let into the heating chamber.
  • the preheating duct is charged in its upper region, it being added that the preheating duct is preferably arranged obliquely or vertically.
  • the discharge between the preheating duct and the heating chamber is also in the upper area of the preheating duct. This creates a sack below the inlet and outlet, in which condensates and non-condensable vapors and air collect. These accumulations prevent the lower region of the preheating duct from heating up to the condensation temperature of the saturated steam at a given pressure.
  • the lower part of the preheating channel is equipped with a drain, a sluice, aperture, gap opening or valve device for draining condensed water, air, inert gases, etc.
  • the outlet is preferably connected to a condensate collector.
  • a condensate collector there is a disadvantage of diaphragms and narrow gaps that they not only hinder the passage of steam, but also the passage of gases, so that the non-condensable gases, in particular air, may not be present in the necessary amount with which Gases occur, can also be removed.
  • saturated steam also escapes through these diaphragms or gaps or the like. The task of letting only liquid and inert gases escape, but not saturated steam, can be achieved by using a temperature-dependent con densatabscheider is used.
  • saturated steam now flows out of the preheating channel via the connecting channel to the separation chamber, it has such a high exit velocity that there is a lower static pressure on the top of the plate than on its underside, which is spaced from the bottom of the separation chamber by suitable spacers. This pressure difference pushes the plate against the two openings and closes them. If condensates or inert gases are now collected in the lower area of the preheating duct, the temperature in the lower region of the preheating duct and thus also the separating chamber drops slightly, so that the static pressure in the separating chamber becomes lower than the static pressure in the preheating duct. As a result, the plate opens the openings under the force of gravity.
  • Outflowing condensates have such a low flow rate that the static pressure on the top of the plate is not affected. Outflowing gases also have a high flow rate, but due to their lower temperature the pressure in the separation chamber will remain lower than the static pressure in the preheating channel.
  • preheating channels are that they increase the contact area necessary for the heat transfer from the saturated steam to the heating chamber.
  • the heat transfer to the heating chamber is further promoted in that the surface distortion forming the thread channel, such as. B. thread guide groove, is formed in an insert which is inserted into an insert groove of a body forming the heating chamber.
  • This insert can then be charged with saturated steam on its back.
  • the sealing area of the back is preferably larger in area than the sealing area on the closing surface of the insert, so that the insert is pressed against the shooting surface of the other body.
  • the sealing areas on the front and back of the insert are of the same size.
  • the inserts also have the advantage that they can be made of particularly wear-resistant material and that they are easily replaceable when worn or to change to another thread titer.
  • the embodiment of a heating chamber according to FIGS. 1 to 3 has the inner body 6, which is fixedly connected to the flange 3, and the outer body 4 with a handle 13 rotatably arranged around it.
  • the inner body 6 has the thread guide groove 10 over its entire length .
  • This thread guide groove is expanded in the central region 19 in the circumferential direction and in depth, so that there is an expanded thread channel in which the thread can move, swing or balloon without touching the walls.
  • Longitudinal seals 25 are provided on both sides of the thread guide groove 10 on the inner body 6, which seal the thread channel in the circumferential direction.
  • transverse seals 34 are also provided at the thread inlet and thread outlet.
  • These cross seals can be 0-shaped sealing strips that extend from one longitudinal seal to another. However, it can also be an O-ring which surrounds the entire inner part 6.
  • Longitudinal and transverse seals are inserted in the grooves of the inner body. The depth of the grooves is less than the thickness of the sealing strips. Due to the pressing force exerted by the rigid outer body, the sealing strips are pressed together in such a way that they separate the joint between the outer and the inner body in a manner surrounding the thread channel Seal surface area (heating zone).
  • the inner body 6 has a central bore 27 which is closed at the top and communicates downwards with the connecting pipe 28. Through the connecting pipe 28, the bore 27 is charged with pressurized saturated steam.
  • the bore 27 communicates with the thread guide groove 10, in particular the central region 19 thereof, through holes 29. The water vapor can escape through the holes 29 into the enlarged central region 19 of the thread guide groove 10.
  • the cylindrical inner part 6 is surrounded by a cylindrical outer part 4, which has an insertion gap 32 for the thread.
  • the outer part 4 can instead have a groove which is introduced into the inner jacket and the flanks of which gently run from the bottom of the groove onto the inner jacket.
  • the outer part 4 is covered by bandages 33 to increase the strength.
  • the outer part 4 can be rotated by means of a handle 13. In the position shown in FIG.
  • the insertion slot 32 opens radially on the thread guide groove 10. It should be mentioned that the insertion slot can also be directed secantially to tangentially.
  • the jacket is rotated so that the thread guide groove 10 is covered by the inner circumference of the jacket 4.
  • the thread guide groove 10 is limited by the inner wall of the outer body 4 to a very narrow thread channel, which prevents uneconomically large amounts of the pressure medium from escaping.
  • the gap width of the thread channel in the end regions of the heating chamber is of the order of less than 0.5 mm and is adapted to the number and thickness (denier) of the threads treated in the thread channel.
  • the inner part has on its rear side the longitudinal seals 35 shown in FIGS. 2 and 3 as well as transverse seals which are not visible here (corresponding to the transverse seal 34 on the front) at the thread entrance and thread exit.
  • the area between these longitudinal seals 35 and their transverse seals is fed with the saturated steam from tube 27 via line 36. Since the secantial distance between the longitudinal seals 35 on the back of the inner part 6 is greater than the secantial distance of the sealing strips 25 on the front of the inner part 6, in the operating position according to FIG. 3 the vapor pressure presses the movable outer part 4 against the longitudinal seals 25 on the Front in the direction of the arrow 37.
  • a saturated steam cushion is thus created on the back of the inner part 6 in the joint between the inner part and the outer part in a surface area (pressure zone) which is larger than the heating zone.
  • This has the advantage that, on the one hand, a well-dosed contact pressure of the outer part on the inner part arises in the area of the thread channel and the sealing strips and, on the other hand, the rear of the inner part and in particular the outer part is directly heated by saturated steam.
  • the saturated steam is at the operating pressure, so that the heating temperature of the pressure zone is equal to the heating temperature of the heating zone.
  • the cylindrical inner part 6 is in turn firmly attached to the flange 3.
  • the outer part 4 is in turn designed as a rotatable jacket 4 provided with an insertion gap 32.
  • the insertion gap 32 opens into the thread guide groove 10 in one rotational position (not shown). In the other rotational position shown in FIGS. 5 and 6, the jacket 4 covers the thread guide groove.
  • a groove 38 (insert groove) running through from top to bottom is made in the inner part 6 and preferably has the same width and depth over its entire length.
  • Insert pieces 39 and 40 are inserted into the insert groove 38.
  • the inserts 39 form the thread input part and thread output part and have a narrow thread guide groove 10, as shown in FIGS. 4, 5.
  • the insert 40 in the central region 19 of the heating chamber has - as shown in FIG. 4 and the cross section on plane XI according to FIG. 5 - a thread guide groove with an enlarged cross section.
  • the inserts 39 and 40 are sealed along their entire length by longitudinal seals 25 on both sides of the groove.
  • the inserts 39 - as already described for the exemplary embodiment according to FIG. 1 - have the transverse seals 34.
  • the flanks of the insert pieces are sealed on both sides by sealing strips 41 with respect to the insert groove 38. In order to achieve a certain sealing mobility, the flanks of the insert groove and the insert parts are aligned parallel to one another.
  • the insert 40 of the central region 19 has on its rear side a longitudinal groove 42 which is penetrated by the holes 29 through which the thread guide groove 10 of the central region 19 is connected to the bore 27 for steam supply. Since the secantial distance of the sealing strips 25 on the thread guide groove side of the insert parts 40 is smaller than the secantial distance of the sealing strips 41, the insert piece 40 is pressed against the inner circumference of the casing by the vapor pressure.
  • the insert pieces 39 at the thread inlet and thread outlet can, but need not, be provided with a longitudinal groove 43 (dashed in cross-section on plane XII according to FIG. 6) acted upon by steam pressure. Likewise, it is not absolutely necessary to provide a separate steam duct for steaming the longitudinal groove 43. Rather, the vapor pressure from the longitudinal groove 42 of the insert 40 will provide sufficient vapor pressure also on the back of the insert 39.
  • the static vapor pressure forming behind the insert 39 is sufficient to ensure a sufficient expression of the sealing lips 25 on the inner circumference of the jacket 4. It should be taken into account that in the area of the thread inlet and thread outlet, a flow occurs in the thread channel in accordance with the pressure drop, so that the static pressure on the back of the inserts 39 is greater than the static pressure on its front. Otherwise, the sealing strips 41 also ensure that the rear side is sealed in a steam-tight manner in the case of the insert pieces 39. As can be seen from FIG. 4, the end faces of the inner part 6 are sealed by the sealing plates 44 which are firmly fitted and sealed in the inner circumference of the jacket 4.
  • the thread inlet part and the thread outlet part of the heating chamber are formed by relatively thin insert pieces 45.
  • the inner part 6, as is also shown in FIGS. 4 and 7, has an insert groove 38.
  • the flanks of this insert groove 38, as can be seen in FIG. 8, are shaped so convergingly that they provide a hold on both sides of a sealing lip 25 .
  • the heating chamber can also consist of an insert 40 in its central region. It can be seen that this insert 40 is also missing or can be replaced by individual shorter inserts.
  • the inserts 45 and 40 have flanks which are also adapted to the sealing lips 25. As a result, the inserts can be clamped between the sealing lips 25. Since there is a distance between the sealing lips, a static pressure will be established below the sealing lips, while a flow will arise above the sealing lips with a corresponding reduction in the static pressure. As a result, the sealing lips in this exemplary embodiment are also pressed forward against the inner circumference of the jacket 4, although the heating zone on the top and the pressing zone on the back of the inserts are the same size.
  • the insert parts can consist of particularly wear-resistant materials in the exemplary embodiments according to FIGS. B. ceramic, in particular sintered ceramic or sintered metal.
  • the inserts can be easily removed when the thread titer to be machined or changed. Furthermore, the inserts are easy to manufacture in bulk, while the production of a wide groove in the inner part 6 requires less manufacturing effort than the production of a very fine thread guide groove. In addition, however, due to their steam-heated back, the inserts ensure that the material area of the heating chamber surrounding the thread channel is heated to a temperature which essentially corresponds to the operating temperature in the thread channel. This effect is further improved by the heating zone formed on the front of the inserts between the sealing strips 25, since heat is also transferred to the jacket 4 in this heating zone.
  • the exemplary embodiments according to FIGS. 9, 10 are characterized in that the pressing zone is formed by metal inserts 46.
  • the insert pieces 46 are inserted into an insert groove 47 on the back of the inner part 6.
  • This insert groove 47 is pressurized from the bore 27 via bore 48 with steam pressure.
  • the longitudinal seals 49 are provided, which seal the back of the insert 46 against the groove flanks. It should be mentioned. that there are also corresponding transverse seals, which however cannot be represented in the given views.
  • the insert pieces 46 can be more or less extend less great length of the inner part 6.
  • the insert extends over a partial length and has a feather-shaped cross section.
  • an annular O-ring can be used as a longitudinal and transverse seal.
  • the insert groove 47 with the insert 46 is cylindrical.
  • the outer jacket is heated by metallic contact between the insert 46 and the outer jacket on a large contact area which is larger than the heating zone on the front of the inner body.
  • the heating chamber shown in longitudinal section in FIG. 11 consists of the tubular inner body 6 and the jacket 4 rotatable around it.
  • FIGS. 1 to 10 On the back of the inner body 6 facing away from the thread channel there is a groove 43 which is in any case as long as the central region 19 in which the thread channel 10 is widened.
  • the groove is connected at the top via bore 36 to the preheating duct 27.
  • the condensate can run out of the groove 43 back into the preheating duct 27 through the bore 50.
  • the groove 43 defines a pressure zone which is larger than the heating zone defined in the area of the thread channel.
  • the preheating channel 27 formed in the interior of the inner tube 6 is charged with steam at its upper end via steam line 28.
  • the condensates, in particular the condensed water and the inert gases, have a temperature which is below the temperature of the saturated steam.
  • the preheating duct has an opening 106 at the bottom, which opens into a separation chamber 107.
  • Another opening 110 of the separation chamber 107 leads to the outside or to a condensate collector, which is not shown here.
  • the opening 106 and the opening 110 both lie in a common plane.
  • the plate has spacers 112 on its underside, which have the effect that the static pressure of the separation chamber 107 also acts on the underside of the plate.
  • the plate first opens the opening 106, as a result of which the plate tilts in relation to the opening 110.
  • the pressure in the separation chamber 107 drops and the plate 111 falls to the bottom, so that the condensate or the inert gases can now escape completely.
  • the plate is vertically movable against its gravity. It is also possible to guide the plate horizontally or pivotably and / or the effect of gravity by z. B. replace spring force.
  • the steam is supplied to the preheating duct 27 via the connecting line 28 and the 3-way valve 116.
  • the preheating duct 27 is optionally supplied with steam or relieved of pressure by this valve. Due to the relief, the pressure zone on the back of the inner part 6 is also relieved, so that the outer part 4 can be easily rotated relative to the inner part 6 into the threading position.
  • a heating chamber is shown in cross section, which consists of two flat plates 51 and 52.
  • This plate pack is enclosed in a solid housing 104, which is screwed together from the plates 64, 65, 66 and is stable enough to absorb the pressures arising in the interior of the thread channel and the forces caused thereby.
  • These plates can be displaced relative to one another parallel to their surface by cylinder-piston unit 69-71.
  • the front edge 105 of the plate 51 recedes behind the thread guide groove 10, so that an opening is created in which the thread can be inserted.
  • the thread guide groove is closed.
  • the thread guide duct 10 is fed with saturated steam via bore 29 by opening a valve (not shown here) via steam feed line 27 (preheating duct).
  • the back of plate 52 is also charged with steam through bore 36.
  • the plate 52 which is sealed off from the housing 104 by circumferential seals 41, is pressed against the other plate 51, so that these plates, at least with their seals 25, lie on one another in a vapor-tight manner. It is particularly important that the surface area circumscribed by the circumferential seals 41 is greater than the surface area formed by the longitudinal seals 25 and the associated transverse seals.
  • Fig. 13 shows a similar embodiment, which differs from that in Fig. 12 in principle only in that the front of the plate 51 is provided with a step 108.
  • the embodiment according to FIG. 14 is also essentially similar. Its main difference from the embodiments according to FIGS. 12 and 13 is that the plate 51 does not release a threading slot above the thread guide groove in one end position, but rather has an enlarged longitudinal groove 109 which in the Position shown (threading position), in which the heating chamber is out of operation, is aligned with the thread guide groove 10 and forms an extended threading gap through which the thread can be easily threaded pneumatically or by means of bristles.
  • the threading groove 109 is provided with a bevel on one side, so that the thread moves from the bevel when the plate 51 is moved into its operating position shown in dashed lines is pressed into the thread guide groove 10.
  • the housing 104 which surrounds the plates 51, 52 forming the heating chamber on at least two opposite sides in the case of the exemplary embodiment according to FIG. 14, is designed to be stable and rigid enough to withstand the steam forces Record and ensure even when loaded with the steam pressure that the plates are close to each other in their contact surfaces and with their longitudinal and transverse seals.
  • 15a, 15b, 15c show cross and longitudinal sections of a further embodiment of a heating chamber in the operating position (FIGS. 15a, 15c) and in the threading position (FIG. 15b).
  • the plate 52 is movable in the direction of the arrow.
  • the plate 51 has two planes 73 and 74 which are plane-parallel to one another and are connected to one another by a step 54.
  • the displaceable plate 52 also has plane-parallel planes which are connected to one another by the steps 55.
  • the steps 54 and 55 of the plates 51, 52 are each straight and of the same size. In the exemplary embodiment it is shown that the step form a plane. However, a different level training is also possible. In particular, it is possible to make the steps concave - in the cross section shown.
  • the plate 52 is slidably guided with its plane-parallel planes between the mutually facing planes of the plates 51 and 53. In the position shown in FIG.
  • a longitudinal slit is created in the area of the steps 55 of the plate 53 on the front face of the plates 51 and 52, since this step 55 slightly projects above the front face of the plates 51.
  • a thread running parallel to the longitudinal slots can be inserted transversely to its running direction into the gap between the plates 51 and 52.
  • the plate 52 is then slid back to a position shown in Fig. 15b. In this position, a narrow thread channel 10 is created.
  • the thread channel is formed by the plane 74 and the step 54 of the plate 51 and by the plane 73 and the step 55 of the plate 52.
  • the thread duct 10 is fed with saturated water vapor.
  • a recess 77 is machined into the plane 74 and the step 54 of the plates 51. This recess causes the thread channel to widen over part of its length in the central region, so that the narrow gap only remains in the inlet and outlet region of the thread.
  • a pressure zone is provided between the rear of the plate 52 and the plate 53 of the housing 104.
  • a further line 75 branches off from the first preheating duct 58 to the third preheating duct 76 with the bore 79.
  • the joint between the plate 53 and the plate 52 is laterally sealed by a sealing strip 41 in each case.
  • the area circumscribed by the sealing strips 41 forms the surface Pressure zone and is larger than the saturated steam-heated surface, which in this case is also defined by sealing strips 25 in the planes 73 and 74 of the plate 51.
  • the preheating ducts 58, 27, 76 extend essentially over the entire length of the thread duct 10, but in particular over the central region thereof.
  • the pipe system. that connects the preheating channels for the purpose of supplying steam is preferably in an upper level.
  • the preheating ducts have condensate drains, which either lead outside via a condensate separator or to a common condensate collector.
  • the steam supply line takes place via a 3-way valve 116, which in the operating position according to FIG. 15a releases the steam supply and simultaneously releases the preheating ducts 58, 27, 76 from the heating chamber before retracting into the threading position according to FIG. 15b.
  • the pressure zone which is defined by the sealing lips on the rear side of the plate 52, must be so large that, given the vapor pressure, the frictional force generated between the plates 51 and 52 is greater than that on the steam force acting at level 55. This prevents the plate 52 from moving in the opening direction as a result of the vapor pressure or that additional mechanical means must be provided by which the plate 52 is held in its operating position.
  • the step of one or the other plate, but in particular the stationary plate 51 can also be formed in that the one and / or other plate is designed as a flat plate and an intermediate plate is then placed on such a plate which corresponds to the step of the other plate in its thickness.
  • Such an intermediate plate 78 is shown in FIGS. 15a and 15b.
  • the stage 54 of the plate 51 is produced by it.
  • the intermediate plate 78 is on the plate 51 z. B. fixed by screwing.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Treatment Of Fiber Materials (AREA)

Abstract

Dans une chambre de chauffe, des fils continus sont traités à la vapeur saturée. La chambre de chauffe est formée de deux parties (51, 52) dont les surfaces congruentes sont posées l'une sur l'autre et qui délimitent grâce à une gorge ou palier (54), (55) dans ces surfaces un canal de fil étroit (10). On effectue la fermeture ainsi que le chauffage de la chambre de chauffe en dirigeant de la vapeur saturée sur les parties à partir de l'arrière. La zone superficielle de l'arrière qui est frappée par la vapeur saturée est plus importante que la zone correspondante située entre les deux parties. Les surfaces frappées par la vapeur saturée sont de préférence délimitées par des bandes étanches (25), (41). Les parties peuvent avoir une forme cylindrique ou parallélépipédique.

Claims (14)

1. Chambre de chauffe pour fils en défilement, en particulier pour fils synthétiques, dans laquelle les fils sont traités à la vapeur d'eau saturée (vapeur saturée) se trouvant à une pression supérieure à la pression atmosphérique et qui comporte deux corps (4, 6 ; 51, 52) qui, mobiles l'un par rapport à l'autre, sont soumis à une force de serrage les appliquant l'un contre l'autre à leur position de fonctionnement par des zones de leurs surfaces (surfaces de fermeture) de formes sensiblement congruentes et qui, par une irrégularité (déformation) de la surface du premier corps forment entre eux un étroit canal (10) qui est parcouru par le fil dans le sens longitudinal et qui est alimenté en vapeur saturée, caractérisée par le fait qu'à la position de fonctionnement au moins l'un des corps est soumis sur sa face arrière à l'action de la vapeur saturée dans une zone de serrage (52) et que la surface de la zone de serrage - en projection sur les surfaces de fermeture - est au moins aussi grande, ou de préférence plus grande que les surfaces de fermeture soumises à la pression de la vapeur saturée dans la zone de la déformation de la surface (zone de chauffage).
2. Chambre de chauffe selon la revendication 1, caractérisée par le fait que la zone de serrage sur la face arrière des corps est entourée par des barrettes d'étanchéité (35, 41).
3. Chambre de chauffe selon l'une des revendications 1 à 2, caractérisée par le fait que le canal de fil (10) et la zone de serrage (19) sont raccordés à la même source de vapeur saturée.
4. Chambre de chauffe selon la revendication 3, caractérisée par le fait que le canal de fil (10), d'une part, et la zone de serrage, d'autre part, au niveau du canal d'amenée de vapeur commun (28) sont reliés par un distributeur à trois voies (116) à un raccord de décompression et à un raccord de vapeur.
5. Chambre de chauffe selon l'une des revendications précédentes 3, 4, caractérisée par le fait qu'un canal de préchauffage (27) situé le long de la zone de serrage (19) s'étend sur une grande partie de la longueur du canal de fil (10), que le canal de préchauffage est relié au canal d'amenée de vapeur saturée (28) ainsi que par des conduites de raccordement, au canal de fils et à la zone de serrage et qu'il est prévu des systèmes de valves (116) par lesquels l'amenée de vapeur saturée allant aussi bien au canal de fils qu'à la zone de serrage peut être fermée simultanément.
6. Chambre de chauffe selon l'une des revendications précédentes 1 à 5, caractérisée par le fait que l'un des corps réalisé rigide (corps extérieur 4, 104) entoure l'autre corps (corps intérieur 6, plaque intérieure 52) en venant s'appliquer étroitement sur ses faces avant et arrière et que la déformation de la surface formant le canal de fils (10) est située entre la paire de surfaces de la face avant et que la zone de serrage est située entre la paire de surfaces de la face arrière.
7. Chambre de chauffe selon l'une des revendications 1 à 5, caractérisée par le fait que la déformation de la surface formant le canal de fils (rainure 10) est formée dans une pièce de garniture (39) qui est insérée dans une rainure (38) d'un corps formant la chambre de chauffe et que la pièce de garniture est soumise à l'action de la vapeur saturée sur sa face arrière située du côté opposé à la déformation de la surface.
8. Chambre de chauffe selon la revendication 7, caractérisée par le fait que la pièce de garniture (39) est munie de lèvres d'étanchéité des deux côtés de la déformation de la surface (rainure de fils 10), la zone de la surface ainsi entourée étant plus petite que la zone de serrage sur la face arrière de la pièce de garniture.
9. Chambre de chauffe selon la revendication 7, caractérisée par le fait que les pièces de garniture (39) dans la zone de l'entrée et de la sortie du fil sont dotées d'une étroite rainure de guidage de fils de préférence de 0,2 à 0,5 mm de largeur, que les pièces de garniture sont munies latéralement d'échancrures concaves, que les flancs de la rainure recevant les garnitures comportent des échancrures concaves de sens opposé avec barrettes d'étanchéité encastrées (25) et que les pièces de garniture prennent appui sur les barrettes d'étanchéité par leurs échancrures latérales.
10. Chambre de chauffe selon la revendication 8, caractérisée par le fait que la pièce de garniture est étanchée vis-à-vis de la rainure la recevant par des barrettes d'étanchéité (41) qui circonscrivent une plus grande surface que les barrettes d'étanchéité (25, 34) entourant le canal de fil (10).
11. Chambre de chauffe selon l'une des revendications 7 à 10, caractérisée par le fait que plusieurs pièces de garniture (45) forment le passage du fil.
12. Chambre de garniture selon la revendication 11, caractérisée par le fait que les différentes pièces de garniture sont respectivement situées à distance les unes des autres.
13. Chambre de chauffe selon l'une des revendications 11, 12, caractérisée par le fait que les pièces de garniture (40) de la zone médiane ont une rainure de plus grande largeur que les pièces de garniture (38, 45) des zones d'extrémité.
14. Chambre de chauffe selon l'une des revendications 11 à 13, caractérisée par le fait que les pièces de garniture (39, 45) ne sont disposées qu'au niveau de l'entrée et de la sortie du fil.
EP84900279A 1982-12-18 1983-12-14 Chambre de chauffe pour fils continus Expired EP0128208B1 (fr)

Applications Claiming Priority (18)

Application Number Priority Date Filing Date Title
DE3247040 1982-12-18
DE3247040 1982-12-18
DE3247626 1982-12-23
DE3247626 1982-12-23
DE3304752 1983-02-11
DE3304752 1983-02-11
DE3308251 1983-03-09
DE19833308251 DE3308251A1 (de) 1983-03-09 1983-03-09 Heizkammer fuer laufende faeden
DE3312823 1983-04-09
DE3312823 1983-04-09
DE3318645 1983-05-21
DE3318645 1983-05-21
DE3321202 1983-06-11
DE3321202 1983-06-11
DE3326432 1983-07-22
DE3326432 1983-07-22
DE3336101 1983-10-05
DE3336101 1983-10-05

Publications (2)

Publication Number Publication Date
EP0128208A1 EP0128208A1 (fr) 1984-12-19
EP0128208B1 true EP0128208B1 (fr) 1987-07-29

Family

ID=27575890

Family Applications (3)

Application Number Title Priority Date Filing Date
EP84900046A Expired EP0128176B1 (fr) 1982-12-18 1983-12-14 Chambre de chauffe pour fils continus
EP83112564A Expired EP0114298B1 (fr) 1982-12-18 1983-12-14 Chambre de chauffage pour fils en défilement
EP84900279A Expired EP0128208B1 (fr) 1982-12-18 1983-12-14 Chambre de chauffe pour fils continus

Family Applications Before (2)

Application Number Title Priority Date Filing Date
EP84900046A Expired EP0128176B1 (fr) 1982-12-18 1983-12-14 Chambre de chauffe pour fils continus
EP83112564A Expired EP0114298B1 (fr) 1982-12-18 1983-12-14 Chambre de chauffage pour fils en défilement

Country Status (5)

Country Link
US (4) US4529378A (fr)
EP (3) EP0128176B1 (fr)
JP (2) JPS60500138A (fr)
DE (3) DE3372503D1 (fr)
WO (2) WO1984002359A1 (fr)

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JPH02501395A (ja) * 1987-09-30 1990-05-17 ヴィスコスイス・エスアー 空気流による繊維束の旋回処理装置および方法
JP2525471B2 (ja) * 1987-12-25 1996-08-21 東レ株式会社 糸条の処理装置
US5088264A (en) * 1989-07-13 1992-02-18 Barmag Ag Yarn threading apparatus
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DE59308629D1 (de) * 1992-07-10 1998-07-09 Hoechst Ag Verfahren zum Verstrecken von erhitzten Garnen, damit erhältliche Polyesterfasern sowie deren Verwendung
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Also Published As

Publication number Publication date
JPS60500378A (ja) 1985-03-22
EP0114298A1 (fr) 1984-08-01
DE3372792D1 (en) 1987-09-03
DE3372503D1 (en) 1987-08-20
JPS60500138A (ja) 1985-01-31
EP0128176A1 (fr) 1984-12-19
US4565524A (en) 1986-01-21
DE3372793D1 (en) 1987-09-03
EP0114298B1 (fr) 1987-07-15
EP0128176B1 (fr) 1987-07-29
US4609344A (en) 1986-09-02
WO1984002358A1 (fr) 1984-06-21
US4529378A (en) 1985-07-16
WO1984002359A1 (fr) 1984-06-21
EP0128208A1 (fr) 1984-12-19
US4560347A (en) 1985-12-24

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