EP2836629B1 - Device for producing synthetic fibres - Google Patents

Description

The invention relates to a device for producing synthetic threads according to the preamble of claim 1.

A generic device for producing synthetic threads is for example from the DE 103 15 873 A1 known.

In the known device for producing synthetic threads, an air conditioning device is used to cool the devices and aggregates of the device itself in addition to the cooling of the freshly extruded threads. For this purpose, the devices of the device are arranged in climatic chambers, wherein in particular the drives and power electronics to be cooled are integrated in the climatic chambers. Such devices require a relatively high energy consumption in order to perform sufficient cooling of the drives and control units.

Therefore, it is also known in the art to separately cool the drives and controllers to be cooled within the device by individual refrigeration units. For example, the control units can be integrated into coolable control cabinets, such as those from the DE 101 45 311 A1 evident. In this case, the heat emitted by the electronic components is discharged through a plurality of heat exchangers into a cooling shaft filled with cooling air. The cooling shaft is preferably coupled with an air conditioning device.

For cooling the drives, in particular the godet drives, solutions are also known in which a cooling jacket cooled with a cooling fluid is used in order to cool the drive of the godet. The cooling jacket is for this purpose connected to a cooling fluid circuit having a heat exchanger. Such a cooling device is for example from the WO 99/61692 known.

The known in the prior art solutions for cooling the drives and control devices in a device for the production of filaments therefore require a high expenditure on equipment to integrate the different cooling systems.

It is therefore an object of the invention to develop a device for producing synthetic threads of the generic type such that the drives and control devices of the devices are independent of an air conditioning coolable.

Another object of the invention is to carry out the generic device for the production of synthetic threads with an energy-efficient cooling device for the drives and control units.

It is also an object of the invention to carry out the generic device for the production of synthetic filaments with a substantially independent of the site cooling device.

This object is achieved in that the drives and the control devices of the facilities are jointly cooled by a central water cooling device.

Advantageous developments of the invention are defined by the features and feature combinations of the subclaims.

The invention has the particular advantage that the heat losses incurred within the entire device can be dissipated together. An interface to the air conditioning, usually the cooling air for cooling the filaments provides is completely avoided. At each of the cooled within the device drives or control units, the heat loss is absorbed by an integrated water cooling and transported away.

In order to comply with the necessary properties for a cooling water, such as to limit the corrosion intensity, the development of the invention is particularly advantageous in which the water cooling device has a main heat exchanger, which cooperates with a closed machine water circuit and an inlet port and a return port for a has external cooling water circuit. This makes it possible to carry out the heat transfer within the device with a high-quality cooling water, which rotates exclusively in the closed machine water cycle. The loss of heat loss can be dissipated centrally via the main heat exchanger to an external cooling water circuit. It has been found that, in particular, the cold water circuits already used in a polymerization plant can be used to advantage.

In the event that the drives and control units of the spinning device, the godet device or the take-up device require cooling water of different temperatures, the development of the invention is preferably carried out, in which the water-cooling device has a plurality of main heat exchangers. The main heat exchangers are coupled with separate machine water circuits, which are independently connected to drives and / or control devices of the facilities. Each of the main heat exchangers has an inlet connection and a return connection, which are connected to an external cooling water circuit or to several separate cooling water circuits. The main heat exchangers can be controlled independently of each other to obtain a desired for the cooling drives and control units cooling water temperature of the guided in the machine circuits cooling water. A regulation of the pH value is particularly important when using cooling water, in particular to keep corrosion reactions low. It has shown, that the cooling water contained in a closed machine water circuit should have a pH in the range between 6 and 9, preferably between 7 and 8.5.

In a godet or winding device usually many drives and the associated control units are needed, so that the cooling of such control devices, the development of the invention is preferably used, in which arranged several of the control devices of the facilities in a central cabinet and / or distributed in multiple cabinets and that the water cooling device for each of the control cabinets has one of a plurality of secondary heat exchangers. Thus, the control units and the associated power electronics and other coolable electronic components can be cooled in one unit.

For this purpose, the secondary heat exchangers assigned to the control cabinets are preferably connected in parallel to the machine circuit, so that an identical cooling water supply is ensured at each of the secondary heat exchangers.

In order to absorb the heat loss occurring within the refrigerator, the secondary heat exchanger are designed as so-called air-water exchanger. For this purpose, the secondary heat exchanger cooperate with a fan, which is preferably integrated within the control cabinet.

Thus, the spatially separated devices of the device can be integrated in one or more closed machine water circuits, the machine water circuit is preferably formed by a line system that is connected directly to the coolable drives and / or with multiple secondary heat exchangers. Thus, even larger distances between two floors can be bridged.

The production of the synthetic threads is usually done with devices having a plurality of processing stations that form a machine longitudinal side within a building. In order to integrate the plurality of drives and control devices of the godet device and / or the winding device in the machine water circuit, the development of the invention has proven particularly useful in which the line system is formed by at least two main tubes with a plurality of side connections and a plurality of hose lines, wherein the hose assemblies are connected by releasable connectors to the side ports of the main pipes. In the case of several main heat exchangers, two main tubes are preferably used per heat exchanger for distributing the cooling water to the processing stations.

It has been shown that in complex galette devices with a multiplicity of godets, the cooling water supply of the godet drives can be improved by having the line system a cooling water distributor per processing station, the cooling water distributor being coupled to the coolable drives or secondary heat exchangers via a plurality of hose lines. In particular, very short hose lines can be realized in the line system.

Since it is common within the device to turn off individual processing stations due to maintenance or process interruptions independently of adjacent processing stations, a monitoring of the cooling water supply is provided. For this purpose, the development of the invention is used, in which the cooling water manifolds in the processing stations each one of a plurality of pressure sensors are assigned and that the pressure sensors are connected to a central control device. In this way, activation of the drives can be linked directly with the cooling water supply to cool the drives.

The energy efficiency can be further improved by the one of the processing stations associated control units are arranged together in a cabinet and that the associated cabinet associated secondary heat exchanger are releasably connected to the machine water cycle. So it is common that the winding turret of the take-up device are kept interchangeable in the processing station, so that an integrated at the turret cabinet with secondary heat exchanger can be separated quickly and easily from the machine water cycle.

In order to ensure the function of the water cooling device in operation, the development of the invention is particularly advantageous, in which the main heat exchanger is assigned a monitoring device with a plurality of sensors and in which the monitoring device is connected to the control device and / or an alarm device. For example, the water temperature, the flow of cooling water or the PH value can be continuously monitored. As soon as an impermissible deviation of the monitored parameter is registered, an alarm signal can be generated via the control device or directly via the monitoring device. In the case of several main heat exchangers, the monitoring device is formed by a plurality of monitoring units which are distributed to the individual main heat exchangers.

The invention will be explained in more detail with reference to some embodiments with reference to the accompanying figures.

Fig. 1

eine schematische Ansicht eines ersten Ausführungsbeispiels der erfindungsgemäßen Vorrichtung zur Herstellung synthetischer Fäden

Fig. 2

eine schematische Teilansicht des Ausführungsbeispiels aus Fig. 1

Fig. 3

eine schematische Ansicht eines weiteren Ausführungsbeispiels der erfindungsgemäßen Vorrichtung zur Herstellung synthetischer Fäden

Fig. 4

eine schematische Ansicht eines weiteren Ausführungsbeispiels der erfindungsgemäßen Vorrichtung zur Herstellung synthetischer Fäden

Fig. 5

eine schematische Teilansicht des Ausführungsbeispiels aus Fig. 4

They show:

Fig. 1

a schematic view of a first embodiment of the inventive device for producing synthetic threads

Fig. 2

a schematic partial view of the embodiment of Fig. 1

Fig. 3

a schematic view of another embodiment of the inventive device for producing synthetic threads

Fig. 4

a schematic view of another embodiment of the inventive device for producing synthetic threads

Fig. 5

a schematic partial view of the embodiment of Fig. 4

In the Fig. 1 and 2 a first embodiment of the inventive device for the production of synthetic threads is shown schematically. In Fig. 1 is shown schematically an overall view of the embodiment and in Fig. 2 a partial view of the processing station I. Unless expressly made to one of the figures, the following description applies to both figures.

The embodiment comprises a spinning device 1, a Galtteneinrichtung 4 and a winding device 5, which are arranged to produce a plurality of synthetic threads with each other. The godet device 4 and the take-up device 1 are divided into a plurality of processing stations to produce a group of threads parallel to each other per processing station and to wind coils. In Fig. 1 only two example processing stations I and II are shown. The winding device 5 has per processing station I and II each have a winding turret 5.1. The Spulrevolver 5.1 has two overhanging driven Spulspindeln 5.2, which are driven by associated spindle drives 5.3. At the winding spindles 5.2, the threads are alternately wound into coils.

Within the processing station I and II, the spool turrets 5.1 are each assigned a control cabinet 11.2 on a drive side, which contains the control devices and drive electronics assigned to the spindle drives 5.3.

Above the winding device 5, the godet device 4 is arranged. The godet device 4 has several processing stations I and II each Godets 4.1, which form a drafting field for drawing the threads in this embodiment. The godets 4.1 are preferably designed to be heated and driven independently by godet drives 4.2.

As from the illustration in Fig. 2 As can be seen, the godet drives 4.2 of the godets 4.1 within the processing station I or II are assigned a plurality of godet control devices 4.3, which are held in a control cabinet 11.3. The control cabinet 11.3 preferably also contains further electronic components and control devices, for example for controlling the jacket heaters in the godets 4.1.

Above the godet device 4, the spinning device 1 is arranged to produce the synthetic threads. As from the illustration in Fig. 1 shows, the spinning device 1 per processing station I and II to a spinning beam 1.2, which carries a plurality of spinnerets 1.3 on its underside. The spinnerets 1.3 are supplied via a spinning pump 1.4 with a melt produced by a central extruder 1.1. For this purpose, the extruder 1.1 is driven by an extruder drive 1.5 and the spinning pump 1.4 by a pump drive 1.6. The drives 1.5 and 1.6 associated control devices are arranged together in a central control cabinet 11.1. The control cabinet 11.1 additionally contains a control unit for the heater 1.7 of the extruder 1.1.

Each of the spinning beam 1.2 is assigned a blowing device 2 for cooling the freshly extruded filaments and a preparation device 3 in the processing stations I and II, each of which has a metering pump 3.1 and a metering drive 3.2 per processing station. The metering drive 3.2 associated control unit is also integrated in the cabinet 11.1.

The spinning device 1, the godet 4 and the winding device 5 are shown in an operating condition. Thus, a plurality of filament bundles are extruded through the spinneret 1.3 and through the spinning device 1 cooled by the associated blowing 2. After cooling, the filament bundles are wetted by the preparation device 3 and combined to form a thread. The threads produced parallel next to one another in a processing station I or II are then removed from the spinning device via the godets 4.1 of the godet device and drawn with the following godets. After stretching, the threads are separated and wound in several winding positions of the winding turret each to a coil on one of the winding spindles 5.2.

As from the illustrations in Fig. 1 and Fig. 2 shows, a water cooling device 6 is provided to cool the godet drives 4.2 and the control devices of the drives of the devices 1, 3, 4 and 5. For this purpose, the water cooling device 6 has a main heat exchanger 7, which is connected on the machine side to a machine water circuit 8. For exchanging the heat, the main heat exchanger 7 has an inlet connection 9 and a return connection 10 in order to connect an external cooling water circuit.

The main heat exchanger 7 is assigned a monitoring device 23 with at least one sensor 24. The monitoring device 23 is coupled via signal lines to a control device 22 and an alarm device 25.

The machine water circuit 8 of the water cooling device 6 is formed by a closed line system 14. The line system 14 has two main pipes 15.1 and 15.2 which form a cooling water inlet and a cooling water outlet along a machine longitudinal side. At each of the main pipes 15.1 and 15.2 several auxiliary connections 18.1 to 18.4 are arranged per processing station I or II. The secondary connections 18.1 to 18.4 have plug connections 17.1 and 17.4, on which a plurality of hose lines 16.1 to 16.4 are arranged.

As from the illustration in Fig. 1 it is apparent, at the spinner 1 associated control cabinet 11.1 a secondary heat exchanger 12.1 is arranged. The secondary heat exchanger 12.1 is designed as an air-water exchanger and is combined with a fan 13 arranged inside the control cabinet 11.1. The secondary heat exchanger 12.1 is coupled via the hose lines 16.4 and 16.5 with the main pipes 15.1 and 15.2.

As from the illustrations in Fig. 1 and Fig. 2 As can be seen, the godet drives 4.2 of the godets 4.1 are designed to be coolable in the treatment stations I and II. Thus, the godet drives 4.2 could be cooled, for example, by a cooling jacket, which is directly coupled to the water cooling device 6. In order to carry out the distribution of the cooling water, each treatment station I and II is associated with a cooling water distributor 19.1 and 19.2. The cooling water distributor 19.1 of the processing station I is in Fig. 2 shown schematically. The cooling water manifold 19.1 is connected via the hose lines 16.1 and 16.2 to the auxiliary connections 18.1 and 18.2 of the main pipes 15.1 and 15.2 by a respective quick-coupling plug connection 17.1 and 17.2. On an outlet side, the cooling water manifold 19.1 a plurality of hose lines 20, each forming a supply and return to the godet drives 4.2. In addition, the cooling water manifold 19.1 is coupled to a second secondary heat exchanger 12.2, which is integrated on the control cabinet 11.3. Within the control cabinet 11.3 the godet control devices 4.3 are arranged. The representation of the godet controllers 4.3 within the cabinet 11.3 is exemplary. In principle, other electronic components, not shown here, such as, for example, heating plates or other power electronics, may advantageously be integrated in the control cabinet 11.3. To replace the heat, the secondary heat exchanger 12.2 a fan 13 is assigned, so that an exchange of heat between the air and the water takes place within the secondary heat exchanger 12.2.

As from the illustrations in Fig. 1 and Fig. 2 furthermore, each cooling water distributor 19.1 and 19.2 within the treatment stations I and II are each assigned a pressure sensor 21.1 and 21.2. The pressure sensors 21.1 and 21.2 are coupled to the control device 22 via signal lines.

The winder 5 associated electronic components are integrated in the cabinet 11.2, he also has an integrated secondary heat exchanger 12.3. The secondary heat exchanger 12.3 is also designed as a water-air exchanger. In that regard, the function is identical to the aforementioned and explained secondary heat exchangers 12.1 and 12.2.

The secondary heat exchanger 12.3 is coupled within the processing station I or II through the hose lines 16.3 and 16.4 with the side ports 18.3 and 18.4 of the main pipes 15.1 and 15.2. The connection of the hose lines 16.3 and 16.4 also takes place via quick-coupling connectors 17.3 and 17.4. Thus, an exchange of Spulrevolver 5.1 with associated cabinet 11.3 and secondary heat exchanger 12.3 would be possible without major disassembly in the water cooler 6.

In operation, the main heat exchanger 7 is first connected to an external cooling water circuit 26. Since such devices are used directly in connection with polymerization, can be used advantageously used in the polymerization cold water circuits to absorb the dissipated from the closed machine circuit 8 heat and dissipate. The closed machine water circuit 8, which is coupled to the main heat exchanger 7, contains a treated cooling water in order not to burden the connected heat exchangers and cooling units inadmissible. Thus, the relevant for the corrosion intensity PH value is limited to the cooling water within the closed machine water circuit 8 to a value range of 6 to 9. Preferably, an upper pH of 8.5 is not exceeded.

The water properties of the cooling water in the machine water circuit 8 can be advantageously monitored by the monitoring device 23. Thus, in addition to the pH value, the water temperature, the water pressure, the flow rate and the filling quantity can be monitored. In the event that the monitoring device 23 signals an impermissible deviation with respect to the connected control device 22, a control command or an alarm command can be triggered via the control device. At the in Fig. 1 In the illustrated embodiment, the monitoring device 23 is also connected directly to an alarm device 25, so that the signal of the monitoring device 23 can be used directly to activate the alarm device 25. The alarm device 25 can in this case generate a visual or an acoustic signal.

Via the line system 14 of the machine water circuit 8, the water exchange at the connected secondary heat exchangers 12.1, 12.2 and 12.3 and directly to the cooling units of the godet drives 4.2 run. For this purpose, the secondary heat exchanger 12.1, 12.2 and 12.3 are coupled parallel to each other with the main pipes 15.1 and 15.2.

The godet device 4 associated cooling water distribution is carried out by the respective associated cooling water manifold 19.1 and 19.2. The integrated pressure sensors 21.1 and 21.2 on the cooling water distributors 19.1 and 19.2 ensure that the activation of the godets 4.1 within the processing station I or II can only be used when cooling water is present. Only if a sufficient cooling water pressure is measured within the cooling water manifold 19.1 or 19.2, activation of the godets 4.1 or the godet drives 4.2 is allowed. The pressure sensors 21.1 and 21.2 can also be advantageously combined with a valve for controlling the water inlet to the cooling water manifold 19.1 and 19.2. By means of a valve control of the valve, the inflow to the cooling water can be changed.

At the in Fig. 1 and 2 illustrated embodiment of the device according to the invention, the secondary heat exchanger 12.1 to 12.3 adjusted to the particular need. For example, the secondary heat exchanger 12.1 of the central control cabinet 11.1 could be operated with a larger flow rate than the secondary heat exchanger 12.3 of the control cabinet 11.3 arranged on the winding turret 5.1.

This in Fig. 1 illustrated embodiment can be supplemented by a plurality of processing stations. So it is customary to operate such devices with a maximum of 24 processing stations. The structure of the processing stations, in particular the godet systems is exemplary.

In Fig. 3 a further embodiment of a device according to the invention is shown, in which the godet device 4 and the winding device 5 are partially coupled together.

This in Fig. 3 illustrated embodiment is essentially identical to the embodiment of FIG Fig. 1 , so that only the differences will be explained below and otherwise reference is made to the above description.
At the in Fig. 3 illustrated embodiment, the spinning device 1 and the winding device 5 is arranged such that the spinning beam 1.2 of the spinning device 1 extend substantially transverse to the winding spindles 5.2 of Spulrevolver 5.1.

The godet device 4 has per processing station I and II several godets 4.1, which are held at a front end of the winding turret 5.1.

The actuators 5.3 of the winding turret 5.1 and the drives 4.2 of the godets 4.1 associated control devices are arranged together in a the spool turret 5.1 associated control cabinet 11.2. The in the processing station I and II provided cooling water manifold 19.1 and 19.2 is coupled via hose lines 20 directly to the coolable godet drives 4.2 of the godets 4.1.

The structure and function of the water cooling device 6 is also substantially identical to the aforementioned embodiment. Here, one processing station I and II of the secondary heat exchanger 12.2 and the cooling water manifold 19.1 are integrated into the conduit system 14 of the closed machine water circuit 8. The spinner 1 associated control cabinet 11.1 is as already before in the embodiment according to Fig. 1 shown cooled by a secondary heat exchanger 12.1. The function and the embodiment are identical to the aforementioned embodiment.

It should be noted at this point that the number of secondary heat exchangers per processing station and the number of directly coolable drives and the type of directly coolable drives are exemplary. It is essential for the invention that all coolable units and electronic components can be cooled together by a central water cooling device, so that the heat losses occurring can be specifically absorbed and removed.

According to the embodiment Figure 3 the main heat exchanger 7 is also associated with a monitoring device 23, wherein the monitoring device 23 is coupled directly to a control device 22. Within the control device 22, an evaluation of the signals of the monitoring device 23 takes place. In the event that an impermissible deviation between desired and actual values is determined, an alarm device 25 can be activated via the control device 22. This ensures that the closed machine water circuit 8 in the device always remains functional with the required cooling water qualities.

In the Fig. 4 a further embodiment of the device according to the invention for the production of synthetic threads is shown schematically. The

Embodiment comprises a spinning device 1, a godet device 4 and a winding device 5, which in their structure and function identical to the embodiment according to Fig. 1 are. In that regard, reference is made at this point to the above description and explained below only the differences.

For cooling the drives and control devices of the spinning device 1, the godet device 4 and the winding device 5, a central water cooling device 6 is provided. The water cooling device 6 has in this embodiment two separate main heat exchangers 7.1 and 7.2, which are connected on the machine side, each with a machine circuit 8.1 and 8.2. For exchanging the heat, the main heat exchangers 7.1 and 7.2 each have an inlet connection 9.1 and 9.2 and a return connection 10.1 and 10.2 in order to connect an external cooling water circuit 26. The main heat exchangers 7.1 and 7.2 can be connected via the inlet connections 9.1 and 9.2 and the return connections 10.1 and 10.2 both to a common cooling water circuit and to two separate cooling water circuits.
The main heat exchangers 7.1 and 7.2 are each assigned a monitoring unit 23.1 and 23.2, which is coupled via signal lines to a control device 22. The monitoring units 23.1 and 23.2 may each have one or more sensors to perform a cooling water monitoring.

The main water heat exchangers 7.1 and 7.2 associated machine water circuits 8.1 and 8.2 are each formed by a closed line system 14.1 and 14.2. The line system 14.1 has two main pipes 15.1 and 15.2, which form a cooling water inlet and a cooling water outlet along a machine longitudinal side. At each of the main pipes 15.1 and 15.2 several auxiliary connections 18.1 and 18.2 are arranged per processing station I or II. The secondary connections 18.1 and 18.2 have plug connections 17.1 and 17.2, on which a plurality of hose lines 16.1 and 16.2 are arranged. The hose lines 16.1 and 16.2 are within the processing station I with a cooling water manifold 19.1 coupled. The cooling water distributor 19.1 is assigned to the godet device 4 in the processing station I. The cooling water manifold 19.1 has on an outlet side a plurality of hose lines 20, which each form a supply and return to the godet drives 4.2. In addition, the cooling water manifold 19.1 is coupled to a second secondary heat exchanger 12.2, which is integrated on the control cabinet 11.3. Within the control cabinet 11.3 the godet control devices 4.3 are arranged. The representation of the godet controllers 4.3 within the cabinet 11.3 is exemplary. In principle, other electronic components, not shown here, such as, for example, heating plates or other power electronics, may advantageously be integrated in the control cabinet 11.3. To replace the heat, the secondary heat exchanger 12.2 a fan 13 is assigned, so that an exchange of heat between the air and the water takes place within the secondary heat exchanger 12.2.

At the machine circuit 8.1, the cooling stations for cooling the drives and control devices of the godet device 4 are thus connected in the processing stations 1 and 2, respectively. The water cooled in the machine water circuit 8.1 is continuously heated via the associated main heat exchanger 7.1.

The second main heat exchanger 7.2 of the central water cooling device 6 is assigned to a second machine water circuit 8.2. The machine water circuit 8.2 is formed by the line system 14.2, which has two main pipes 15.3 and 15.4. The main pipes 15.1 and 15.2 extend parallel to the main pipes 15.1 and 15.2 along a machine longitudinal side of the device. At each of the main pipes 15.3 and 15.4, several auxiliary connections 18.3 and 18.4 are arranged per treatment station I or II. The secondary connections 18.3 and 18.4 have plug connections 17.3 and 17.4, at which several hose lines 16.2 and 16.4 are arranged. The hose lines 16.3 and 16.4 are with a secondary heat exchanger 12.3 within the processing station I connected. The secondary heat exchanger 12.3 is assigned to the control cabinet 11.2, which contains the electronic components of the take-up device 5. The secondary heat exchanger 12.3 is also designed as a water-air exchanger.

The connection of the hose lines 16.3 and 16.4 to the main pipes 15.3 and 15.4 via fast coupling stretching joints 17.3 and 17.4. Thus, an exchange of Spulrevolver 5.1 with associated cabinet 11.3 and secondary heat exchanger 12.3 would be possible without major disassembly.

As from the illustration in Fig. 4 It can be seen that at the spinner 1 associated control cabinet 11.1 also a secondary heat exchanger 12.1 is arranged. The secondary heat exchanger 12.1 is designed as an air-water exchanger and cooperates with a fan 13 arranged inside the control cabinet 11.1. The secondary heat exchanger 12.1 is coupled via the hose lines 16.4 and 16.5 with the main pipes 15.3 and 15.4 of the machine water circuit 8.2. For this purpose, the main pipes 15.3 and 15.4 have two additional auxiliary connections 18.5 and 18.6.

In operation, the main heat exchangers 7.1 and 7.2 are first connected to an external cooling water circuit 26 or alternatively to two separate external cooling water circuits to receive and dissipate the heat dissipated from the connected machine water circuits 8.1 and 8.2. Each individual main heat exchanger 7.1 and 7.2 with the connected machine water circuits 8.1 and 8.2 can be controlled separately to cool the connected drives and control units. Thus, the cooling of the godet device 4 is made above the machine water circuit 8.1. The water temperatures of the cooling water required for cooling the drives and control devices of the godet device 4 can be advantageously set by the main heat exchanger 7.1. Likewise, the water pressure, the flow rate and the filling quantity as well as the PH value of the cooling water in the machine water circuit can be controlled Adjust 8.1 regardless of the cooling water in the machine circuit 8.2.

The closed machine water circuit 8.2 is provided for cooling the control devices of the spinning device 1 and the winding device 5. Thus, the controllers of the take-up device 5 and the spinning device 1 can be cooled at a different temperature level.

The device according to the invention for the production of synthetic threads is characterized in that all heat losses incurred within the devices can be dissipated by a central water cooling device. In that regard, advantageously external cooling water circuits can be used to continuously dissipate the heat loss produced via a heat exchanger or a plurality of heat exchangers.

In the embodiments of the inventive device according to Fig. 1 . 3 and 4 It is also possible to optionally integrate a demand-oriented cooling water supply. For example, in a supply line, the hose 16.1 could be integrated with a valve which would be controlled via a position control unit for opening or closing the cooling water inlet to the cooling water distributor 19.1. Thus, in particular the electric godet drives and godet control devices can be cooled only when needed.

LIST OF REFERENCE NUMBERS

1

spinner

1.1

extruder

1.2

spinning beam

1.3

spinneret

1.4

spinning pump

1.5

extruder drive

1.6

pump drive

1.7

heater

2

Anblaseinrichtung

3

preparation device

3.1

metering

3.2

metering

4

Galetteneinrichtung

4.1

galettes

4.2

godet

4.3

Galettensteuergerät

5

takeup

5.1

spindle turret

5.2

winding spindle

5.3

spindle drive

6

Water cooler

7,7.1,7.2

Main heat exchanger

8, 8.1, 8.2

Machinery water cycle

9,9.1,9.2

inflow connection

10, 10.1, 10.2

Return connection

11.1, 11.2, 11.3

switch cabinet

12.1, 12.2, 12.3

In addition to heat exchanger

13

fan

14

line system

15.1, 15.2

main pipe

16.1 ... 16.6

hose

17.1 ... 17.2

connector

18.1 ... 18.6

shunts

19.1, 19.2

Cooling water distributor

20

hose

21.1,21.2

pressure sensor

22

control device

23

monitoring device

23.1,23.2

monitoring unit

24

sensor

25

alarm device

26

Cooling water circuit

I, II

processing station

Claims (13)

1. Apparatus for producing synthetic threads, having a spinning device (1), having a godet device (4) and having a winding device (5), wherein the devices (1, 4, 5) have a plurality of drives (1.5, 1.6, 4.2, 5.3) and controllers which are cooled during operation,
   characterized in that
   the drives (4.2) and the controllers of the devices (1, 4, 5) are coolable jointly by way of a central water cooling device (6).
2. Apparatus as claimed in claim 1,
   characterized in that
   the water cooling device (6) has a main heat exchanger (7) which interacts with a closed machine water circuit (8) and which has an inflow connection (9) and a return flow connection (10) for an external cooling water circuit (26).
3. Apparatus as claimed in claim 1,
   characterized in that
   the water cooling device (6) has a plurality of main heat exchangers (7.1, 7.2) which each interact with a closed machine water circuit (8.1, 8.2) and which each have an inflow connection (9.1, 9.2) and a return flow connection (10.1, 10.2) for one or more external cooling water circuits (26).
4. Apparatus as claimed in claim 2 or 3,
   characterized in that
   the closed machine water circuit (8, 8.1, 8.2) contains cooling water with a pH in the range between 6 and 9.
5. Apparatus as claimed in one of claims 1 to 4,
   characterized in that
   a plurality of the controllers of the devices (1, 4, 5) are arranged in a central switch cabinet (11.1) and/or in a distributed manner in a plurality of switch cabinets (11.2, 11.3), and in that the water cooling device (6) has one of a plurality of secondary heat exchangers (12.1, 12.2, 12.3) for each of the switch cabinets (11.1, 11.2, 11.3).
6. Apparatus as claimed in claim 5,
   characterized in that
   the secondary heat exchangers (12.1, 12.2, 12.3) are connected in parallel to the machine water circuit (8, 8.1, 8.2).
7. Apparatus as claimed in claim 5 or 6,
   characterized in that
   the secondary heat exchanger (12.1, 12.2, 12.3) that is assigned to one of the switch cabinets (11.1, 11.2, 11.3) interacts with a fan (13) for the purpose of cooling the controllers.
8. Apparatus as claimed in one of claims 2 to 7,
   characterized in that
   the machine water circuit (8, 8.1, 8.2) is formed by a line system which is connected directly to the coolable drives (4.2) and/or to a plurality of secondary heat exchangers (12.1, 12.2, 12.3).
9. Apparatus as claimed in claim 8,
   characterized in that
   the line system (14) is formed by two main pipes (15.1, 15.2) having a plurality of secondary connections (18.1-18.6) and a plurality of hose lines (16.1-16.6), wherein the hose lines (16.1-16.6) are connected to the secondary connections (18.1-18.6) by detachable plug connectors (17.1-17.6).
10. Apparatus as claimed in one of claims 1 to 9,
    characterized in that
    the godet device (4) and/or the winding device (5) form a plurality of processing stations (I, II), and in that the line system (14) has one cooling water distributor (19.1, 19.2) per processing station (I, II), said cooling water distributor (19.1, 19.2) being coupled to the coolable drives (4.2) and/or secondary heat exchangers (12.2) via a plurality of hose lines (20).
11. Apparatus as claimed in claim 10,
    characterized in that
    the cooling water distributors (19.1, 19.2) in the processing stations (I, II) are each assigned one of a plurality of pressure sensors (21.1, 21.2), and in that the pressure sensors (21.1, 21.2) are connected to a central control device (22).
12. Apparatus as claimed in claim 10 or 11,
    characterized in that
    the controllers assigned to one of the processing stations (I, II) are arranged in one of the switch cabinets (11.1, 11.2. 11.3), and in that the secondary heat exchangers (12.1, 12.2, 12.3) assigned to the switch cabinets (11.1, 11.2, 11.3) in question are connected detachably to the machine water circuit.
13. Apparatus as claimed in one of claims 2 to 12,
    characterized in that
    a monitoring device (23) having a plurality of sensors (24) is assigned to a main heat exchanger, and in that the monitoring device (23) is connected to a control device (22) and/or to an alarm device (25).

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