Textile machinery

Abstract

To provide a textile machine having a particularly high fail-safe property.SOLUTION: A textile machine 1 comprises: a plurality of work units 2 having at least one electrical load, especially an electrical drive; and an energy supply system having a plurality of power supply units 4 that supplies electrical energy to at least one electrical load, in which the power supply units are alternatively and independently configured to supply electrical energy to at least a portion of the working unit, and are connected in parallel at an output end to coordinately supply power to the electrical load. In order to provide a textile machine having a particularly high-level fail-safe property, the power supply unit is configured to detect its own power data and / or operating temperature and transmit information to a control unit 6.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention provides a plurality of working units each having at least one electric load, in particular an electric drive; an energy supply system having a plurality of power supply units for supplying electrical energy to at least one electrical load; In a textile machine comprising: each power supply unit configured to supply electrical energy to at least a part of the working units independently of one another, and connected in parallel at their output ends to cooperatively power an electrical load. [Background technology]

[0002] Textile machines of the type mentioned at the outset are known in various configurations from the prior art. For example, German Patent Application No. DE 10 2015 014 177 A1 already discloses a textile machine with several adjacently arranged working units, each of which has several electrical loads, such as electrical drives for the winding shaft, the yarn traverse and the sensors.

[0003] To supply energy to the electrical loads of the individual operational units, the textile machine has an energy supply system with multiple power supply units, the output terminals of which are connected in parallel to cooperatively supply electrical energy to the electrical loads of the operational units. The energy supply system, whose input terminals are connected to a power supply network, allows the magnitude or frequency of the voltage or current provided by the power supply network to be adjusted as needed. Thus, the electrical loads in the various operational units can be operated with the required supply voltage. The multiple power supply units of the energy supply system, whose output terminals are connected in parallel, allow the electrical loads of the individual operational units to be powered as needed, and this parallel connection also makes it possible to distribute energy returned by one or more electrical loads of one operational unit to the electrical loads of other operational units. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] German Patent Application Publication No. 102015014177 Summary of the Invention [Problem to be solved by the invention]

[0005] However, known textile machines of the type mentioned at the beginning have the disadvantage that the energy supply systems for powering the individual work units are insufficiently monitored, so that in the event of a defect in one or more power supply units, the textile machine fails completely and production comes to a halt.Based on this, it is an object of the present invention to provide a textile machine with particularly high fail-safe properties. [Means for solving the problem]

[0006] The present invention solves the above-mentioned problem by a textile machine having the features of claim 1. Advantageous developments of the invention are set out in the dependent claims.

[0007] A feature of the textile machine according to the invention is that the power supply units of the energy supply system are configured to detect and transmit their own power data and / or operating temperature to the control unit, where power data is understood in particular to mean the power consumption of the individual power supply units, which power data are detected either at intervals or continuously and transmitted to the control unit.

[0008] The possibility of detecting the power data and operating temperatures of the individual power supply units allows the operation of the textile machine to be adjusted via the control unit when the permissible power or temperature of the power supply units is exceeded, so that the load on the power supply units is reduced and a shutdown of the textile machine as a result of a failure in the energy supply system can be prevented. Here, detection of the power data and / or operating temperatures of the power supply units makes it possible to take appropriate measures via the control unit before an imminent failure occurs, thereby maintaining stable operation of the textile machine, possibly at reduced power. This effectively prevents a complete production shutdown of the textile machine. Since the power data and / or operating temperatures of the power supply units are here reliable indicators of the continued availability of the power supply units, a particularly reliable monitoring of the energy supply of the working units of the textile machine as a whole is possible.

[0009] The processing of the power data and / or operating temperatures of the power supply units of the energy supply system by the control unit can basically be carried out in any manner, whereby the control commands of the control unit resulting from the respective power data and / or operating temperatures can also basically be freely selected. However, in a particularly advantageous configuration of the invention, the control unit is configured in such a way that, when the operating temperature and / or power consumption of one or more power supply units exceed a predetermined first threshold value, the control unit reduces the energy consumption of one or more operating units by changing the operating parameters of the operating units.

[0010] In this configuration of the invention, the control unit stores first threshold values ​​for power consumption and / or operating temperature. When one or more power supply units exceed this first threshold value, the control unit changes the operating parameters of one or more operational units to reduce the energy consumption of the operational units, thereby reducing the load on the energy supply system, in order to avoid interruptions in the energy supply of the operational units. The control unit can then match the power consumption of the electrical loads to the power provided by the power supply units, thereby effectively avoiding operating states that would damage the power supply units of the energy supply system and cause a breakdown of the textile machine. By freely selecting the number of operational units whose energy consumption is reduced by changing their operating parameters, it is possible to reliably ensure that damaging operating states are avoided. The first threshold value may be, for example, a predetermined operating temperature or power consumption of each power supply unit that should not be exceeded (temperature) and / or should not be exceeded for a predetermined time (power consumption).

[0011] In a further configuration of the invention, the control unit is configured to switch off the supply of electrical energy to a percentage of the operating units if the operating temperature and / or power consumption of one or more power supply units exceeds a second predetermined threshold. This configuration of the invention particularly reliably ensures that by completely switching off the supply of electrical energy to a percentage of the operating units, the overall power consumption of the energy supply system is effectively reduced, thereby improving the operating conditions of the power supply units of the energy supply system and thus avoiding operating conditions that are damaging to the power supply units.

[0012] The control unit according to this development of the invention is preferably provided in addition to the preferred configuration of the control unit, where the control unit changes the operating parameters of one or more operational units in order to reduce the energy consumption of the operational units when a first threshold is exceeded. In this preferred configuration, the control unit therefore has a two-stage safety system for ensuring the operation of the textile machine. When the first threshold is exceeded, the energy consumption of several operational units is first reduced, thereby reducing the power data and / or operating temperature below the first threshold. If, in some cases, further changes in the operating parameters of the operational units do not produce the desired results, this development of the invention further reduces the load on the energy supply system in a second stage by switching off the energy supply of the operational units in proportions stored in the control unit, thereby reducing the power data and / or operating temperature below the first threshold provided for reliable operation. This configuration of the invention particularly advantageously prevents a complete breakdown of the textile machine as a result of a defect in the energy supply system.

[0013] The increase in the energy consumption of the operational units due to the operating temperature and / or power consumption falling below a first threshold after a previous reduction in energy consumption can essentially be initiated in any manner, for example by an operator, but in an advantageous configuration of the invention the control unit is configured in such a way that, if the operating temperature and / or power consumption fall below a third predetermined threshold after the operating temperature and / or power consumption exceed a first predetermined threshold, the control unit increases the energy consumption of the one or more operational units whose energy consumption has been reduced by changing the operating parameters.

[0014] In such a configuration of the invention, the control unit is configured to automatically increase the energy supply of the working units whose energy supply was previously reduced because they fell below the first threshold, so that the textile machine operates again with a higher power. Since the third threshold is below the first threshold, the change in the operating parameters of one or more working units to reduce the energy consumption and the restoration of the operating parameters to the values ​​that existed before the reduction in energy consumption are carried out in a hysteretic manner, which effectively prevents the continuous switching state that would occur if there was only one first threshold.

[0015] In a further configuration of the invention, the control unit is configured to supply electrical energy to a proportion of the switched-off working units if, after the operating temperature and / or the power consumption exceeds a second predetermined threshold, the operating temperature and / or the power consumption falls below a fourth predetermined threshold.

[0016] In this configuration of the invention, the control unit automatically re-energizes the operating unit that has been disconnected from the energy supply due to exceeding the second threshold value after the fourth threshold value has fallen below, which is located below the second threshold value that is important for switching off the energy supply in order to ensure a hysteresis function. The configuration of the control unit in this development of the invention ensures that, in particular, after the operating state of the energy supply system that is critical for operation has fallen below, the control unit automatically operates the textile machine again in the state that was set before the power reduction, so that the textile machine is only operated at reduced power in the event of an imminent failure of the energy supply system.

[0017] The threshold values ​​can be selected in any manner, but preferably the operating parameters set by the manufacturer for fault-free operation of the power supply unit are used as the basic conditions. Preferably, the operating temperature should be below the operating temperature set by the manufacturer for switching off the power supply unit for the first and second threshold values. Regarding the power data to be used as the threshold values, monitoring of the power consumption over a predetermined time period is particularly suitable. Therefore, if the power consumption exceeds a predetermined power consumption for a longer period than set, the control unit can take measures to reduce the power consumption and temperature of the power supply unit of the energy supply system. In a particularly advantageous embodiment of the invention, the proportion of working units to which energy is not supplied when the threshold value and / or the second threshold value are exceeded can be adjusted. This embodiment of the invention allows the operator of the textile machine to appropriately adapt the threshold values ​​to the operating conditions in order to ensure optimal operation of the textile machine.

[0018] The proportion of operational units that should be switched off when the second threshold is exceeded can basically be freely selected, whereby the energy supply to a significant proportion of operational units should be stopped when the second threshold is exceeded in order to avoid a complete breakdown of the energy supply system, which would result in a complete shutdown of the textile machine. In a particularly advantageous embodiment of the invention, the proportion of operational units that should be switched off when the second threshold is exceeded is 5 to 25%, preferably 10 to 20%, and particularly preferably 15%. Such a proportion of operational units that should be switched off is particularly advantageous as it ensures that loads that would damage the energy supply system are prevented.

[0019] An embodiment of the present invention will be described below with reference to the drawings. [Brief explanation of the drawings]

[0020] [Figure 1] 1 is a diagram showing a first embodiment of a textile machine; [Figure 2]FIG. 10 is a diagram showing a second embodiment of a textile machine. DETAILED DESCRIPTION OF THE INVENTION

[0021] FIG. 1 shows a schematic diagram of a textile machine 1 according to the invention. The textile machine 1 comprises a number of operational units 2 arranged adjacent to one another. The operational units 2 may be configured in a manner known per se, for example as winding units. FIG. 1 exemplarily shows only one electrical load 3 for each operational unit 2. The electrical load 3 is advantageously configured as an electrical drive. The textile machine 1 has a DC voltage bar 9 extending over the length of the machine. The DC voltage bar 9 is connected to the electrical load 3 and possibly further electrical loads of the operational units 2, not shown, for supplying them with electrical energy.

[0022] A number of power supply units 4, three in this example, are distributed over the length of the textile machine 1 and together form the energy supply system of the textile machine 1. In the example shown, the power supply units 4 are configured as rectifiers with a downstream DC voltage intermediate circuit. The inputs 4.1 of the power supply units 4 are each connected to an AC voltage network 8. The outputs 4.2 of the power supply units 4 are each connected to a DC voltage bar 9. The power supply units 4 are therefore connected in parallel at their outputs 4.2 and together supply the electrical loads 3 of the working units 2.

[0023] The textile machine 1 has a central control unit 6 which is connected via a data bus 5 to the working unit controls of the working units 2 and to the power supply unit 4, not shown.

[0024] The operational unit controller allows the individual operation of the operational units 2. Various operating temperatures can be set for each operational unit 2 via the central control unit 6. Furthermore, each power supply unit 4 is connected to each other and to the central control unit 6 via a data bus 5. Thus, each power supply unit 4 continuously transmits its own power data and operating temperature to the control unit 6.

[0025] If the load on the power supply unit 4 is excessively high, this can be identified by exceeding a first threshold stored in the control unit 6, for example an operating temperature of 85°C or excessively high power consumption, for example above 7.5 kW for more than 20 seconds, and via the control unit 6, the operating parameters of several pre-defined operating units 2 are changed so that the power consumption and therefore the load on the power supply unit 4 is reduced.

[0026] If the power was previously reduced due to exceeding the first threshold, after falling below the third threshold, the power consumption can be increased again via the control unit 6. For this purpose, the operating parameters of those operational units 2 whose power consumption was previously reduced are adjusted accordingly.

[0027] Via the data bus 5, information is transmitted to the control unit 6 regarding the effectiveness of the change in the operating parameters. If the change in the operating parameters does not result in the desired load reduction of the energy supply, via the control unit 6, a number of the operating units, for example 15%, are switched off, i.e. disconnected from the energy supply, when a second threshold value above the first threshold value is exceeded.

[0028] Similarly, when the power data and / or operating temperature of the power supply unit 4 falls below a fourth threshold value that is located below the second threshold value, the control unit 6 switches on again the working unit 2 that was previously switched off because it exceeded the second threshold value.

[0029] As a result, a temperature of 85° C. and a power consumption of the power supply unit 4 above 7.5 kW for more than 20 seconds can be used as a second threshold for switching off a percentage of the working units 2. As a fourth threshold for resulting in switching on the switched-off working units again, a power supply unit temperature of 75° C. and / or a power consumption below 6.5 kW for more than 40 seconds can be used here, for example.

[0030] These threshold values ​​are freely selectable by the operator via the control unit 6 .

[0031] Figure 2 shows a second embodiment of a textile machine 1 which for the most part corresponds to the textile machine 1 of figure 1. The only difference is that the power supply units 4 are not distributed over the textile machine 1 but are housed in a common switch cabinet 7 at the end of the textile machine 1. [Explanation of symbols]

[0032] 1. Textile machinery 2 Unit of Work 3. Load 4 Power Supply Unit 4.1 Input terminal 4.2 Output terminal 5 Data Bus 6. Control Unit 7 Switch Cabinet 8 AC voltage grid 9 DC voltage bar

Claims

1. a plurality of working units (2) having at least one electric load (3), in particular an electric drive; an energy supply system having a plurality of power supply units (4) for supplying electrical energy to the at least one electrical load (3); A textile machine (1) comprising: The power supply units (4) are configured to supply electrical energy to at least some of the working units (2) independently of one another, and are connected in parallel at their output ends to cooperatively supply power to the electrical loads (3), in a textile machine (1), The power supply unit (4) is configured to detect its own power data and / or operating temperature and transmit them to the control unit (6); the control unit (6) is configured to reduce the energy consumption of one or more operational units (2) through modification of operational parameters of the operational units (2) when the operating temperature and / or power consumption of one or more power supply units (4) exceeds a predetermined first threshold; the control unit (6) is configured to switch off the supply of electrical energy to a proportion of the working units (2) when the operating temperature and / or the power consumption of one or more power supply units (4) exceeds a predetermined second threshold value; A textile machine (1) characterized by:

2. 2. The textile machine (1) according to claim 1, wherein the control unit (6) is configured to increase the energy consumption of the one or more working units (2) whose energy consumption has been reduced through a change in the operating parameters when the operating temperature and / or the power consumption exceeds the predetermined first threshold and then falls below a predetermined third threshold.

3. 3. The textile machine (1) according to claim 1 or 2, wherein the control unit (6) is configured to supply electrical energy to a proportion of the working units (2) that have been switched off if, after the operating temperature and / or the power consumption exceed the second predetermined threshold, the operating temperature and / or the power consumption fall below a fourth predetermined threshold.

4. 4. The textile machine (1) according to claim 1, wherein the first predetermined threshold and / or the second predetermined threshold and / or the proportion of the working units (2) to which energy is not supplied when the second predetermined threshold is exceeded are adjustable.

5. 5. The textile machine (1) according to claim 1, wherein the proportion of the working units (2) that should be switched off when the predetermined second threshold is exceeded is between 5 and 25%, preferably between 10 and 20%, particularly preferably 15%.

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