Multi-loop power conversion and stable power supply device for loom

Abstract

The invention discloses a multi-loop power supply conversion and stable power supply device for a loom, relates to the technical field of textile, improves electric energy quality, eliminates voltage fluctuation, guarantees stable operation of a loom production line, especially stable operation of a spinning process, and greatly reduces the probability of defective product production and damage of the loom. The power supply can be quickly cut off in an emergency or when voltage fluctuation occurs, so that the safety of personnel and the loom is protected. The scheme is characterized in that the power supply unit is composed of a three-phase power output module, a first control module and a second control module; the electromagnetic device power supply unit is composed of a third control module, a first voltage transformation module, a rectification module and a filtering module. The electromagnetic device power supply unit is used for converting alternating-current three-phase power into a direct-current stabilized power supply; the controller power supply unit is composed of a second voltage transformation module, an emergency stop control module and a power supply conversion module. The controller power supply unit is used for converting AC three-phase power into a DC emergency stop power supply. The power supply device is used for loom power supply.

Description

Technical Field

[0001] The invention relates to the field of textile technology, and in particular to a multi-circuit power conversion and stable power supply device for a loom. Background Art

[0002] As a traditional pillar of the national economy and an important livelihood industry, the textile industry occupies a pivotal position in the globalized economic system. Its production process has extremely high requirements for the stability of power supply. Various subsystems in the production process, especially those involving automatic control, use a large number of nonlinear devices such as frequency converters and AC contactors. They are extremely sensitive to grid voltage and frequency fluctuations, have extremely stringent requirements on the continuity of power supply, and have very high requirements on the power quality of the power supply system.

[0003] Voltage fluctuation events, especially voltage sags, can cause the frequency conversion motor production equipment to shut down, forcing the product production process to stop, resulting in a large number of product scraps and equipment damage. For the entire textile process, the spinning process is the primary production link and the most important production link. The spinning process and the weaving process are two independent process flows. When a voltage sag occurs, if the weaving process is affected, it will generally only cause the loss of woven products in the production line, and the yarn products in the textile process will be basically unaffected; however, once the spinning process is affected, it will affect the yarn products and then affect the woven products. Therefore, the research on sensitive equipment in the textile industry is particularly important.

[0004] The existing loom production equipment uses AC380V alternating current as the power supply for the load. There is a voltage fluctuation of -10% to 10% in the domestic range, which does not affect the operation of the production line. However, when the existing looms are exported to foreign countries, especially Africa, the voltage fluctuation range becomes larger, which seriously affects the normal operation of the production line. Summary of the invention

[0005] The present invention provides a multi-circuit power conversion and stable power supply device for a loom, which can convert an AC380V AC power supply into a DC stabilized power supply and a DC 24V emergency-stop power supply, and use the DC stabilized power supply to power the loom electromagnet, thereby improving the quality of electric energy, eliminating voltage fluctuations, and ensuring the stable operation of the loom production line, especially the stable operation of the spinning process, thereby greatly reducing the probability of producing defective products and the probability of damage to the loom; using the 24V emergency-stop power supply to power the loom controller can quickly cut off the power supply of the loom electromagnet in an emergency or when a voltage fluctuation occurs, thereby protecting the safety of personnel and the loom.

[0006] In order to achieve the above object, the present invention adopts the following technical scheme:

[0007] The present invention provides a multi-circuit power conversion and stable power supply device for a loom, comprising: a power supply unit, the power supply unit is composed of a three-phase power output module, a first control module and a second control module; the first control module is composed of three circuit breakers, the three circuit breakers are connected to the three lines output by the three-phase power output module in a one-to-one correspondence, and each of the circuit breakers in the first control module is connected in series to each of the lines output by the three-phase power output module; the second control module is composed of two fuses, the two fuses are connected to two of the three lines output by the three-phase power output module in a one-to-one correspondence, and each of the fuses in the second control module is connected in series to the circuit breaker in the first control module, and also includes: an electromagnetic power supply unit and a controller power supply unit.

[0008] The electromagnetic power supply unit is connected in series with the power supply unit; the electromagnetic power supply unit is composed of a third control module, a first transformer module, a rectifier module and a filter module; the electromagnetic power supply unit is used to convert the AC three-phase electricity output by the three-phase electricity output module into a DC regulated power supply so as to power the electromagnetic of the loom.

[0009] The controller power supply unit is connected in series with the power supply unit, and the controller power supply unit is connected in parallel with the electromagnetic device power supply unit; the controller power supply unit is composed of a second transformer module, an emergency stop control module and a power conversion module, and the controller power supply unit is used to convert the AC three-phase power output by the three-phase power output module into a DC 24V emergency stop power supply, so as to power the controller of the loom;

[0010] The power supply start sequence of the electromagnetic power supply unit and the controller power supply unit is to start simultaneously. During the normal operation of the loom, the electromagnetic power supply unit and the controller power supply unit will continue to supply power to the corresponding components unless the power supply unit fails or the emergency stop control module is triggered to start;

[0011] When the emergency stop control module is triggered, the controller power supply unit stops outputting a DC 24V emergency stop power supply to the controller, and the electromagnetic device power supply unit continues to provide a DC regulated power supply to the electromagnetic device;

[0012] The transformation ratio of the first transformation module and the second transformation module is determined according to the input voltage of the three-phase electrical output module and the working voltage required by the electromagnetic device and the controller.

[0013] Furthermore, in the multi-circuit power conversion and stable power supply device for a loom, the third control module comprises:

[0014] The third control module is composed of three intermediate relays, which are connected one-to-one with the three lines output by the three-phase power output module. Each intermediate relay in the third control module is connected in series with each fuse.

[0015] Furthermore, in the multi-circuit power conversion and stable power supply device for a loom, the first transformer module comprises:

[0016] The first transformer module is composed of a first transformer, and the first transformer is connected in series with the third control module.

[0017] Furthermore, in the multi-circuit power conversion and stable power supply device for a loom, the first transformer comprises:

[0018] The model of the first transformer is SG-3KVA.

[0019] Furthermore, in the multi-circuit power conversion and stable power supply device for a loom, the rectifier module comprises:

[0020] The rectifier module is composed of three rectifiers, and the three rectifiers are connected to the three groups of lines output by the first transformer in a one-to-one correspondence. Each rectifier in the rectifier module is connected in series in each line output by the first transformer.

[0021] Furthermore, the multi-circuit power conversion and stable power supply device for the loom, the rectifier includes: the rectifier model is MDS200A / 1600V.

[0022] Furthermore, in the multi-circuit power conversion and stable power supply device for a loom, the filtering module comprises:

[0023] The filtering module is composed of a filtering capacitor, the model of the filtering capacitor is VC1-3, and the filtering capacitor is connected in series with the two groups of rectifiers.

[0024] Furthermore, in the multi-circuit power conversion and stable power supply device for a loom, the second transformer module comprises:

[0025] The second transformer module is composed of a second transformer, the model of the second transformer is BK-100VA, and the second transformer is connected in series to two of the three lines output by the three-phase power output module.

[0026] Furthermore, the multi-circuit power conversion and stable power supply device for a loom, the emergency stop control module includes:

[0027] The emergency stop control module comprises a contactor coil and an emergency stop button; the contactor coil is connected in series with the emergency stop button, and the emergency stop control module is connected in series with the second transformer module.

[0028] Furthermore, the multi-circuit power conversion and stable power supply device for a loom, the power conversion module includes:

[0029] The power conversion module is composed of a 24V power converter, the 24V power converter is connected in series with the second voltage transformation module, and the power conversion module is connected in parallel with the emergency stop control module.

[0030] The present invention provides a multi-circuit power conversion and stable power supply device for a loom, comprising: a power supply unit, the power supply unit is composed of a three-phase power output module, a first control module and a second control module; an electromagnetic power supply unit is composed of a third control module, a first transformer module, a rectifier module and a filter module; the electromagnetic power supply unit is used to convert the AC three-phase power output by the three-phase power output module into a DC regulated power supply, so as to power the electromagnetic of the loom; a controller power supply unit is composed of a second transformer module, an emergency stop control module and a power conversion module, and the controller power supply unit is used to convert the AC three-phase power output by the three-phase power output module into a DC 24V The power supply can be emergency stopped to power the controller of the loom. Compared with the prior art, the present invention can convert the AC380V AC power supply into a DC regulated power supply and a DC 24V emergency stop power supply, and use the DC regulated power supply to power the loom electromagnet, which improves the power quality, eliminates voltage fluctuations, and ensures the stable operation of the loom production line, especially the stable operation of the spinning process, thereby greatly reducing the probability of defective product production and the probability of loom damage; using a 24V emergency stop power supply to power the loom controller can quickly cut off the power supply of the loom electromagnet in an emergency or when a voltage fluctuation occurs, thereby protecting the safety of personnel and the loom. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. The drawings are only used to illustrate the implementation methods and are not to be considered as limitations of the present invention.

[0032] Figure 1 It is a schematic diagram of the structure of a multi-circuit power conversion and stable power supply device for a loom in an embodiment of the present invention;

[0033] Figure 2 The present invention is a schematic diagram of the structure of another multi-circuit power conversion and stable power supply device for a loom in an embodiment of the present invention. DETAILED DESCRIPTION

[0034] The technical scheme in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment of the present invention. Obviously, the described embodiment is only a part of the embodiment of the present invention, not all of the embodiments. Based on the embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] Unless otherwise defined, all technical and scientific terms used in the present invention have the same meaning as commonly understood by technicians in the field of the present invention; the terms used in the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the terms "including" and "having" and any variations thereof in the specification and claims of the present invention and the above-mentioned drawings, and are intended to cover non-exclusive inclusions.

[0036] In the description of the embodiments of the present invention, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present invention, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0037] In the description of the embodiments of the present invention, the term "and / or" is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0038] In the description of the embodiments of the present invention, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0039] In the description of the embodiments of the present invention, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the embodiments of the present invention.

[0040] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to the specific circumstances.

[0041] Embodiment 1

[0042] The embodiment of the present invention provides a multi-circuit power conversion and stable power supply device for a loom, such as Figure 1 As shown, it includes: a power supply unit 11, the power supply unit 11 is composed of a three-phase power output module 111, a first control module 112 and a second control module 113; the first control module 112 is composed of three circuit breakers, the three circuit breakers are connected to the three lines output by the three-phase power output module 111 in a one-to-one correspondence, and each circuit breaker in the first control module 112 is connected in series to each line output by the three-phase power output module 111; the second control module 113 is composed of two fuses, the two fuses are connected to two of the three lines output by the three-phase power output module 111 in a one-to-one correspondence, and each fuse in the second control module 113 is connected in series to the circuit breaker in the first control module 112, and also includes: an electromagnetic power supply unit 12 and a controller power supply unit 13.

[0043] Among them, the three-phase power output module 111 in the power supply unit 11 is a three-phase power supply. The three-phase power supply is a power system consisting of three phases, and the voltage and current phase angles of each phase differ by 120 degrees. The three-phase power supply is very common in industrial and commercial power supply because it can provide more stable and efficient power.

[0044] The first control module 112 is composed of three circuit breakers. The circuit breaker is an important device for protecting the safe operation of the power system. It can quickly cut off the current when a circuit fault occurs, and play a role in preventing overload and short circuit. Its working principle is: based on the principle of thermal magnetic tripping, when the current in the circuit exceeds the set value, the thermal element inside the circuit breaker will heat up and bend, pushing the tripping mechanism to operate, so that the circuit breaker disconnects the circuit; at the same time, the circuit breaker is also equipped with a magnetic tripper. When the short-circuit current in the circuit reaches the set value, the magnetic tripper will quickly operate to cut off the circuit. Common circuit breakers include: air circuit breakers, vacuum circuit breakers, SF6 circuit breakers, gas circuit breakers, solid circuit breakers and intelligent circuit breakers, etc. When implementing the present invention, the implementer can choose according to actual needs or their own conditions.

[0045] The second control module 113 is composed of two fuses. The fuse is a circuit protection device. Its working principle is to use the thermal effect of a metal conductor (melt) to cut off the circuit. Specifically, the fuse is connected in series in the protected circuit. When the circuit operating current is less than or equal to its rated normal load current, the temperature of the melt in the fuse is low and remains in a solid state. When the protected circuit is overloaded or short-circuited, the current exceeds the normal value and the melt temperature gradually increases. When the current reaches or exceeds a certain value, the melt temperature rises to the melting point, causing the molten metal to liquefy or even vaporize. Under the action of gravity or electromagnetic force, the melt breaks, causing the current to be disconnected, thereby playing a protective role.

[0046] The electromagnetic power supply unit 12 is connected in series with the power supply unit 11; the electromagnetic power supply unit 12 is composed of a third control module 121, a first transformer module 122, a rectifier module 123 and a filter module 124; the electromagnetic power supply unit 12 is used to convert the AC three-phase power output by the three-phase power output module 111 into a DC regulated power supply to power the electromagnetic device of the loom.

[0047] Among them, the loom solenoid is a key component in the loom and one of the key technologies to achieve precise control of the loom. It uses the electromagnetic principle to achieve rapid start, operation and stop of the loom, which is of great significance to improving weaving efficiency and quality. Therefore, providing it with a stable working voltage is a key factor to ensure its normal operation.

[0048] The controller power supply unit 13 is connected in series with the power supply unit 11, and the controller power supply unit 13 is connected in parallel with the electromagnetic power supply unit 12; the controller power supply unit 13 is composed of a second transformer module 131, an emergency stop control module 132 and a power conversion module 133, and the controller power supply unit 13 is used to convert the AC three-phase power output by the three-phase power output module 111 into a DC 24V emergency stop power supply to power the controller of the loom.

[0049] The loom controller is a key component used in the modern textile industry to control and manage the operation of the loom, which ensures the efficient and stable operation of the loom and improves the production quality. The controller power supply unit 13 converts the AC three-phase power output by the three-phase power output module 111 into a DC 24V emergency stop power supply.

[0050] The emergency stop control module plays a vital role in the controller power supply unit of the loom. It is an emergency mechanism. When an emergency occurs during the operation of the loom, such as when the operator finds a situation that may threaten personal safety (such as people accidentally getting involved in the loom, abnormal large-scale shaking of loom parts, or other mechanical failures that may cause serious injuries), or detects an electrical fault that may damage the equipment (such as short circuit, overload, overvoltage, etc. that may damage the controller and other related equipment), the emergency stop control module can quickly intervene to avoid further expansion of the dangerous situation.

[0051] When the emergency stop control module is triggered, its most direct action is to stop outputting the DC 24V emergency stop power supply to the loom controller. The controller is the core control component of the loom, responsible for coordinating and controlling various operations of the loom, including the operation of the motor, the weaving process control of the fabric, tension adjustment and many other functions. Stopping the power supply to the controller will cause the controller to stop working immediately, thereby stopping various operations of the loom, including the rotation of the motor, the movement of mechanical parts, etc., to avoid the dangerous situation from further deteriorating during the operation of the equipment.

[0052] When the emergency stop control module is triggered, the electromagnetic power supply unit continues to provide a DC regulated power supply to the electromagnetic. This is because in an emergency, the electromagnetic needs to be kept in a certain state to avoid unexpected movement of the mechanical structure or other uncontrollable mechanical movements caused by sudden power loss of the electromagnetic. For example, some electromagnetics may be used to control the braking device in a loom. In the event of an emergency stop, maintaining the power supply of the electromagnetic can ensure that the braking device is in a locked state to prevent the loom from continuing to move under the action of inertia, avoiding further damage or safety hazards caused by mechanical inertia. Such a design can ensure that in an emergency, the loom can stop in a relatively safe and stable state, preventing the mechanical structure from losing control due to the cessation of the controller, while ensuring that the key electromagnetic brake and other electromagnetic control functions can continue to function normally, minimizing possible losses.

[0053] The controller usually requires a stable DC 24V power supply to ensure its normal operation. This relatively low DC voltage is a common requirement for most electronic control devices because it can provide a suitable operating voltage for various electronic components such as microprocessors, logic circuits, sensors, etc. in the controller, ensuring that they can stably process signals and execute control instructions. However, the electromagnetic device may require different voltages when working. For example, depending on the specifications and functions of the electromagnetic device, it may require a higher DC voltage and have specific requirements for voltage stability and current size. Therefore, a separate power supply unit (electromagnetic device power supply unit) is required to convert the three-phase AC power into a DC regulated power supply that meets the requirements of the electromagnetic device through operations such as transformation, rectification and filtering, so as to meet the requirements of the electromagnetic force generation and maintenance of the electromagnetic device.

[0054] The controller mainly processes control signals, and its power demand is relatively small. The focus is on accurate signal processing and transmission, and generally does not require the support of large currents. When the electromagnetic device is working, in order to generate sufficient electromagnetic force, a large current is often required, which means that the power supply unit of the electromagnetic device needs to be able to provide a large current to ensure that the electromagnetic device can work normally and achieve actions such as attraction and release. Therefore, the power supply of the two can be designed independently according to their respective power characteristics to avoid mutual interference.

[0055] If the controller and the electromagnet use the same power supply line, once the power supply line or power supply unit fails, such as short circuit, overload, etc., it will affect the controller and the electromagnet at the same time, which may cause the loom to stop working completely, and may even cause safety problems due to the inability to control and brake normally. If they are powered separately, when one of the power supply units fails, the other power supply unit can still work normally, which can avoid the spread of the fault. For example, when the controller power supply unit fails, the electromagnet power supply unit can still work normally, so that the electromagnet remains in a certain state, and may maintain some key braking or mechanical locking functions, and vice versa, which improves the reliability of the entire loom system.

[0056] When the electromagnetic device is working, due to the on-off of its current and the electromagnetic induction phenomenon, certain electromagnetic interference will be generated. These electromagnetic interferences may affect the normal operation of the controller, causing the controller to malfunction or signal transmission errors. Because the circuit in the controller is sensitive to electromagnetic interference, its precise control signal may be affected by electromagnetic interference and deviate. By supplying power separately and adopting appropriate electromagnetic shielding and circuit design, the electromagnetic interference of the electromagnetic device on the controller can be reduced, ensuring the precise control of the controller on the loom.

[0057] The separate power supply design allows maintenance of the power supply system of the controller or the electromagnetic machine by operating one of the power supply units separately, without the need to inspect and repair the entire power supply system at the same time. For example, if there is a problem with the controller power supply unit, the controller power supply unit can be repaired, replaced or upgraded without affecting the normal operation of the electromagnetic machine, reducing the complexity of maintenance and the impact on the overall operation of the loom, and improving maintenance efficiency.

[0058] Different power supply units can be upgraded and optimized independently according to the development of technology and the needs in actual use. For example, as the controller technology advances, a higher quality DC 24V power supply may be required. The controller power supply unit can be improved separately without affecting the electromagnetic power supply unit. Similarly, for the electromagnetic power supply unit, if the performance of the electromagnetic is improved and the demand for power supply changes, its power supply unit can also be upgraded separately, which improves the scalability and flexibility of the system.

[0059] The embodiment of the present invention provides a multi-circuit power conversion and stable power supply device for a loom, comprising: a power supply unit, the power supply unit is composed of a three-phase power output module, a first control module and a second control module; an electromagnetic power supply unit is composed of a third control module, a first transformer module, a rectifier module and a filter module; the electromagnetic power supply unit is used to convert the AC three-phase power output by the three-phase power output module into a DC regulated power supply to power the electromagnetic device of the loom; a controller power supply unit is composed of a second transformer module, an emergency stop control module and a power conversion module, and the controller power supply unit is used to convert the AC three-phase power output by the three-phase power output module into a DC 24V The power supply can be emergency-stopped to power the controller of the loom. Compared with the prior art, the embodiment of the present invention can convert the AC380V AC power supply into a DC regulated power supply and a DC 24V emergency-stop power supply, and use the DC regulated power supply to power the loom electromagnet, thereby improving the power quality, eliminating voltage fluctuations, and ensuring the stable operation of the loom production line, especially the stable operation of the spinning process, thereby greatly reducing the probability of defective product production and the probability of loom damage; using a 24V emergency-stop power supply to power the loom controller can quickly cut off the power supply of the loom electromagnet in an emergency or when a voltage fluctuation occurs, thereby protecting the safety of personnel and the loom.

[0060] Embodiment 2

[0061] The embodiment of the present invention provides a multi-circuit power conversion and stable power supply device for a loom, such as Figure 2As shown, it includes: a power supply unit 21, the power supply unit 21 is composed of a three-phase power output module 211, a first control module 212 and a second control module 213; the first control module 212 is composed of three circuit breakers, the three circuit breakers are connected one-to-one with the three lines output by the three-phase power output module, and each circuit breaker in the first control module 212 is connected in series in each line output by the three-phase power output module 211; the second control module 213 is composed of two fuses, the two fuses are connected one-to-one with two of the three lines output by the three-phase power output module 211, and each fuse in the second control module 213 is connected in series with the circuit breaker in the first control module 212, and also includes: an electromagnetic power supply unit 22 and a controller power supply unit 23.

[0062] The electromagnetic power supply unit 22 is connected in series with the power supply unit 21; the electromagnetic power supply unit 22 is composed of a third control module 221, a first transformer module 222, a rectifier module 223 and a filter module 224; the electromagnetic power supply unit 22 is used to convert the AC three-phase power output by the three-phase power output module 211 into a DC regulated power supply to power the electromagnetic device of the loom.

[0063] The controller power supply unit 23 is connected in series with the power supply unit 21, and the controller power supply unit 23 is connected in parallel with the electromagnetic power supply unit 22; the controller power supply unit 23 is composed of a second transformer module 231, an emergency stop control module 232 and a power conversion module 233, and the controller power supply unit 23 is used to convert the AC three-phase power output by the three-phase power output module 211 into a DC 24V emergency stop power supply to power the controller of the loom.

[0064] Preferably, the multi-circuit power conversion and stable power supply device for a loom, the third control module 221 comprises:

[0065] The third control module 221 is composed of three intermediate relays, which are connected to the three lines output by the three-phase power output module in a one-to-one correspondence. Each of the intermediate relays in the third control module 221 is connected in series with the fuse.

[0066] Among them, the intermediate relay is an electrical device, and its working principle is based on electromagnetic induction and switching principle. When the coil is energized, the magnetic field generated will attract the iron core, causing the contacts to close or open, thereby realizing the control and switching of the circuit. When the coil is de-energized, the iron core is reset by the action of the spring, and the contacts return to their initial state.

[0067] Preferably, in the multi-circuit power conversion and stable power supply device for a loom, the first transformer module 222 comprises:

[0068] The first voltage transformation module 222 is composed of a first transformer, and the first transformer is connected in series with the third control module 221 .

[0069] Furthermore, the first transformer includes: the model of the first transformer is SG-3KVA.

[0070] The first transformer is an E-type transformer, whose specific model is SG-3KVA, which can convert the input 380V three-phase power supply into a 12.5V power supply or a 17V power supply. Specifically, the SG-3KVA transformer uses the principle of electromagnetic induction to change the size of the AC voltage through the input (primary) and output (secondary) windings wound on the magnetic core.

[0071] Preferably, the multi-circuit power conversion and stable power supply device for the loom, the rectifier module 223 includes:

[0072] The rectifier module 223 is composed of three rectifiers, and the three rectifiers are connected to the three groups of lines output by the first transformer in a one-to-one correspondence. Each rectifier in the rectifier module is connected in series to each line output by the first transformer.

[0073] Furthermore, the rectifier includes: the rectifier model is MDS200A / 1600V.

[0074] Among them, the rectifier is an electronic device that converts AC power into DC power. Specifically, its working principle is: based on the conductive properties and electric field effect of semiconductor materials, it mainly utilizes the unidirectional conductivity of the diode to allow current to pass only in one direction, thereby realizing the conversion of AC into DC. The rectifier model of this embodiment is MDS200A / 1600V. As the name suggests, the rectifier MDS200A / 1600V is a three-phase rectifier bridge module with a rated current of 200 amperes and a rated voltage of 1600 volts, which is suitable for high-power rectification needs.

[0075] Preferably, the multi-circuit power conversion and stable power supply device for the loom, the filter module 224 includes:

[0076] The filter module 224 is composed of a filter capacitor, the model of the filter capacitor is VC1-3, and the filter capacitor is connected in series with the two groups of rectifier output lines.

[0077] Among them, the filter capacitor is an electronic component used to smooth the voltage fluctuations in the power supply line and reduce noise. Specifically, the working principle of the filter capacitor is that when the rectified voltage is higher than the voltage of the filter capacitor, the capacitor is charged; when the rectified voltage is lower than the voltage of the capacitor, the capacitor is discharged. Through the charging and discharging process, the output voltage is basically stable, the fluctuation amplitude of the original voltage is reduced, and the output voltage tends to be smooth. The model of the filter capacitor in this embodiment is VC1-3, and its rated voltage is usually 1600V.

[0078] The high-frequency alternating current converted by the first transformer is rectified by a rectifier to obtain a direct current voltage, and then the high-frequency pulsating component is removed by a filter capacitor to obtain a stable output voltage.

[0079] Preferably, the multi-circuit power conversion and stable power supply device for a loom, the second transformer module 231 comprises:

[0080] The second transformer module 231 is composed of a second transformer, the model of the second transformer is BK-100VA, and the second transformer is connected in series to two of the three lines output by the three-phase power output module 211.

[0081] Among them, the second transformer model is BK-100VA, which is a transformer commonly used in electrical control systems. Its input voltage is 380V, output voltage is 220V, capacity is 100VA, input rated current is 0.26A, and output rated current is 0.45A.

[0082] Preferably, the multi-circuit power conversion and stable power supply device for the loom, the emergency stop control module 232 includes:

[0083] The emergency stop control module 232 includes a contactor coil and an emergency stop button; the contactor coil is connected in series with the emergency stop button, and the emergency stop control module is connected in series with the line output by the second transformer module 231 .

[0084] Specifically, the working principle of the contactor coil is as follows: the contactor coil generates a magnetic field when energized, and this magnetic field attracts the iron core (armature), causing the contactor's contacts to close, thereby connecting or disconnecting the circuit. The magnetic force generated by the coil overcomes the reaction force of the spring, attracts the armature, and then drives the action of the contact system. This causes the normally open contact to close and the normally closed contact to disconnect, thus achieving circuit control. When the coil is de-energized, the magnetic field disappears, the armature is released under the action of the spring, and the contacts return to their original state.

[0085] The emergency stop button, also known as the emergency stop button or E-Stop, is a safety device used to quickly cut off power in an emergency to protect the safety of personnel and equipment.

[0086] Preferably, the multi-circuit power conversion and stable power supply device for the loom, the power conversion module 233 includes:

[0087] The power conversion module 233 is composed of a 24V power converter, the 24V power converter is connected in series with the output line of the second transformer module 231 , and the power conversion module 233 is connected in parallel with the emergency stop control module 232 .

[0088] Among them, the 24V power converter is a device that converts AC power into 24V DC power. Specifically, its working principle is: the input AC power is first converted into DC power through a rectifier bridge, and then the pulsating component is removed by a filter capacitor to obtain a smooth and stable DC voltage. Powering the loom controller and the electromagnetic device separately is to meet different electrical needs, improve the reliability and stability of the system, and facilitate subsequent maintenance and upgrades. It is a design solution that comprehensively considers safety, functionality and maintainability.

[0089] It should be noted here that the detailed description of each component of this embodiment can refer to other embodiments and will not be repeated here.

[0090] The embodiment of the present invention provides a multi-circuit power conversion and stable power supply device for a loom, comprising: a power supply unit, the power supply unit is composed of a three-phase power output module, a first control module and a second control module; an electromagnetic power supply unit is composed of a third control module, a first transformer module, a rectifier module and a filter module; the electromagnetic power supply unit is used to convert the AC three-phase power output by the three-phase power output module into a DC regulated power supply to power the electromagnetic device of the loom; a controller power supply unit is composed of a second transformer module, an emergency stop control module and a power conversion module, and the controller power supply unit is used to convert the AC three-phase power output by the three-phase power output module into a DC 24V The power supply can be emergency-stopped to power the controller of the loom. Compared with the prior art, the embodiment of the present invention can convert the AC380V AC power supply into a DC regulated power supply and a DC 24V emergency-stop power supply, and use the DC regulated power supply to power the loom electromagnet, thereby improving the power quality, eliminating voltage fluctuations, and ensuring the stable operation of the loom production line, especially the stable operation of the spinning process, thereby greatly reducing the probability of defective product production and the probability of loom damage; using a 24V emergency-stop power supply to power the loom controller can quickly cut off the power supply of the loom electromagnet in an emergency or when a voltage fluctuation occurs, thereby protecting the safety of personnel and the loom.

[0091] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, not to limit them; although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention. In particular, as long as there is no structural conflict, the various technical features mentioned in each embodiment can be combined in any way. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A multi-circuit power conversion and stable power supply device for a loom, comprising: A power supply unit, the power supply unit is composed of a three-phase power output module, a first control module and a second control module; the first control module is composed of three circuit breakers, the three circuit breakers are connected to the three lines output by the three-phase power output module in a one-to-one correspondence, and each of the circuit breakers in the first control module is connected in series to each of the lines output by the three-phase power output module; The second control module is composed of two fuses, the two fuses are connected one-to-one with two of the three lines output by the three-phase power output module, and each fuse in the second control module is connected in series with the circuit breaker in the first control module, characterized in that it also includes: Electromagnet power supply unit and controller power supply unit; The electromagnetic power supply unit is connected in series with the power supply unit; the electromagnetic power supply unit is composed of a third control module, a first transformer module, a rectifier module and a filter module; the electromagnetic power supply unit is used to convert the AC three-phase power output by the three-phase power output module into a DC regulated power supply to power the electromagnetic of the loom; The controller power supply unit is connected in series with the power supply unit, and the controller power supply unit is connected in parallel with the electromagnetic device power supply unit; the controller power supply unit is composed of a second transformer module, an emergency stop control module and a power conversion module, and the controller power supply unit is used to convert the AC three-phase power output by the three-phase power output module into a DC 24V emergency stop power supply, so as to power the controller of the loom; The power supply start sequence of the electromagnetic power supply unit and the controller power supply unit is to start simultaneously. During the normal operation of the loom, the electromagnetic power supply unit and the controller power supply unit will continue to supply power to the corresponding components unless the power supply unit fails or the emergency stop control module is triggered to start; When the emergency stop control module is triggered, the controller power supply unit stops outputting a DC 24V emergency stop power supply to the controller, and the electromagnetic device power supply unit continues to provide a DC regulated power supply to the electromagnetic device; The transformation ratio of the first transformation module and the second transformation module is determined according to the input voltage of the three-phase electrical output module and the working voltage required by the electromagnetic device and the controller.

2. The multi-circuit power conversion and stable power supply device for a loom according to claim 1, characterized in that: The third control module comprises: The third control module is composed of three intermediate relays, which are connected one-to-one with the three lines output by the three-phase power output module. Each intermediate relay in the third control module is connected in series with each fuse.

3. The multi-circuit power conversion and stable power supply device for a loom according to claim 1, characterized in that: The first transformer module comprises: The first transformer module is composed of a first transformer, and the first transformer is connected in series with the third control module.

4. The multi-circuit power conversion and stable power supply device for a loom according to claim 3, characterized in that: The first transformer comprises: The model of the first transformer is SG-3KVA.

5. The multi-circuit power conversion and stable power supply device for a loom according to claim 1, characterized in that: The rectifier module comprises: The rectifier module is composed of three rectifiers, and the three rectifiers are connected to the three groups of lines output by the first transformer in a one-to-one correspondence. Each rectifier in the rectifier module is connected in series in each line output by the first transformer.

6. The multi-circuit power conversion and stable power supply device for a loom according to claim 5, characterized in that: The rectifier comprises: The rectifier model is MDS200A / 1600V.

7. The multi-circuit power conversion and stable power supply device for a loom according to claim 1, characterized in that: The filtering module comprises: The filter module is composed of a filter capacitor, the model of the filter capacitor is VC1-3, and the filter capacitor is connected in series with the two groups of rectifier output lines.

8. The multi-circuit power conversion and stable power supply device for a loom according to claim 1, characterized in that: The second transformer module comprises: The second transformer module is composed of a second transformer, the model of the second transformer is BK-100VA, and the second transformer is connected in series to two of the three lines output by the three-phase power output module.

9. The multi-circuit power conversion and stable power supply device for a loom according to claim 1, characterized in that: The emergency stop control module comprises: The emergency stop control module includes a contactor coil and an emergency stop button; the contactor coil is connected in series with the emergency stop button, and the emergency stop control module is connected in series with the second transformer module.

10. The multi-circuit power conversion and stable power supply device for a loom according to claim 1, characterized in that: The power conversion module comprises: The power conversion module is composed of a 24V power converter, the 24V power converter is connected in series with the output line of the second transformer module, and the power conversion module is connected in parallel with the emergency stop control module.

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