A circulating water pump power supply system and an aluminum oxide production system

Abstract

The application provides a circulating water pump power supply system and an aluminum oxide production system. It relates to the technical field of compressor circulating water pump power supply. The circulating water pump power supply system comprises a first power supply, a second power supply, a power supply switch and a power supply starting switch. The first power supply is electrically connected with the first end of the power supply switch. The first power supply is used for supplying power to the circulating water pump when the first end is in a conduction state. The second power supply is electrically connected with the second end of the power supply switch through the power supply starting switch. The second power supply is used for supplying power to the circulating water pump when the second end and the power supply starting switch are both in a conduction state. The power supply switch is used for making the second end conductive when the first end is disconnected. The continuity and stability of the circulating water pump power supply are ensured. The risk of overheating damage of the compressor due to lack of cooling water is avoided, which seriously affects the production continuity and the service life of the equipment. The operation and maintenance cost and the loss caused by shutdown are avoided.

Description

Technical Field

[0001] This utility model relates to the field of power supply technology for compressor circulating water pumps, and more specifically, to a power supply system for circulating water pumps and an alumina production system. Background Technology

[0002] In industrial production, circulating water pumps play a crucial role. For example, in the alumina production process, circulating water pumps provide cooling water to the compressor, ensuring its normal operation and thus guaranteeing the stability of the entire production process. However, if the single power supply fails and goes out, the circulating water pump will stop, causing the compressor to malfunction, severely impacting production efficiency and product quality, and potentially even damaging the equipment.

[0003] Therefore, a new technical solution is urgently needed to solve the above-mentioned technical problems. Utility Model Content

[0004] The utility model description section introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. This utility model description section is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0005] In a first aspect, this utility model proposes a circulating water pump power supply system, comprising:

[0006] The system includes a first power supply, a second power supply, a power switching switch, and a power start switch.

[0007] The first power supply is electrically connected to the first terminal of the power switching switch. The first power supply is used to supply power to the circulating water pump when the first terminal is in the conducting state.

[0008] The second power supply is electrically connected to the second terminal of the power switching switch via the power start switch. The second power supply is used to supply power to the circulating water pump when both the second terminal and the power start switch are in the on state. The power switching switch is used to turn on the second terminal when the first terminal is off.

[0009] In some embodiments, the power start switch includes a first switch, which is electrically connected to a power switching switch, and the on or off state of the first switch is asynchronous with the on or off state of the first terminal of the power switching switch.

[0010] In some implementations, it also includes:

[0011] The first power supply detection unit is used to detect the on or off state of the second terminal of the power switching switch in order to generate a power supply signal.

[0012] The power start switch includes a second switch, which is electrically connected to the first power supply detection unit. The second switch is used to receive a power supply signal so as to turn on when the power supply signal indicates that the second terminal of the power switching switch is in the on state.

[0013] In some implementations, it also includes:

[0014] The second power supply detection unit is electrically connected to the power start switch and is used to detect whether the power start switch is conducting.

[0015] In some implementations, it also includes:

[0016] An alarm unit is electrically connected to the power switching switch. The alarm unit is used to sound an alarm when the first terminal of the power switching switch is in the off state.

[0017] In some implementations, the second switch is a manually operated switch.

[0018] In some implementations, it also includes:

[0019] The third power supply detection unit is electrically connected to the second power supply. The third power supply detection unit is used to detect the electrical signal supplied by the second power supply to the circulating water pump when both the second terminal of the power switching switch and the power start switch are in the on state.

[0020] In some implementations, the power switching switch is a dual power switching switch.

[0021] In some implementations, the first power supply and the second power supply are located in different power distribution rooms.

[0022] Secondly, an alumina production system is also provided, comprising:

[0023] The compressor, the circulating water pump, and the circulating water pump power supply system as described above are provided. The circulating water pump is electrically connected to the circulating water pump power supply system. The circulating water pump is used to provide cooling water to the compressor under the power supply of the circulating water pump power supply system. The compressor is used to provide compressed air in the alumina production process.

[0024] According to the above technical solution, the circulating water pump power supply system includes: a first power supply, a second power supply, a power switching switch, and a power start switch. The first power supply is electrically connected to the first terminal of the power switching switch, and is used to supply power to the circulating water pump when the first terminal is in a conducting state. The second power supply is electrically connected to the second terminal of the power switching switch via the power start switch, and is used to supply power to the circulating water pump when both the second terminal and the power start switch are in a conducting state. The power switching switch is used to ensure that the second terminal is conducting when the first terminal is disconnected. This ensures the continuity and stability of the circulating water pump's power supply, avoiding problems such as compressor overheating and damage due to lack of cooling water caused by pump shutdowns, which could severely impact production continuity and equipment lifespan. It also avoids increased maintenance costs and production downtime losses.

[0025] The circulating water pump power supply system of this utility model, other advantages, objectives and features of this utility model will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this utility model. Attached Figure Description

[0026] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit this specification. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0027] Figure 1 A schematic structural block diagram of a circulating water pump power supply system provided in the embodiments of this application;

[0028] Figure 2 A schematic circuit diagram of a power supply system provided for embodiments of this application;

[0029] Figure 3 This is a schematic block diagram of an alumina production system provided in an embodiment of this application. Detailed Implementation

[0030] The terms "first," "second," "third," "fourth," etc. (if present) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments described herein can be implemented in a sequence other than that illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus. The technical solutions of the embodiments of this application will now be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them.

[0031] According to the first aspect of this application, a circulating water pump power supply system is proposed. Figure 1 This is a schematic structural block diagram of a circulating water pump power supply system provided for embodiments of this application. For example, as shown... Figure 1 As shown, the power system 100 may include: a first power supply 110, a second power supply 120, a power switching switch 130, and a power start switch 140. The first power supply 110 is electrically connected to the first terminal a of the power switching switch 130, and the first power supply 110 supplies power to the circulating water pump 200 when the first terminal a is in a conducting state. The second power supply 120 is electrically connected to the second terminal b of the power switching switch 130 via the power start switch 140, and the second power supply 120 supplies power to the circulating water pump 200 when both the second terminal b and the power start switch 140 are in a conducting state. The power switching switch 130 is configured to turn on the second terminal b when the first terminal a is off.

[0032] For example, the first power supply is electrically connected to the first terminal of the power switching switch. In the first operating condition, when the first terminal is in a conducting state, the first power supply can stably supply power to the circulating water pump, driving its operation. For example, the first operating condition can be considered the normal operating condition. Correspondingly, the first power supply, as the main power supply, is electrically connected to the first terminal of the power switching switch. This connection relies on adapter cables and standard connectors to ensure low-impedance, high-stability power transmission, delivering power to the circulating water pump to maintain its normal operation and meet the routine power needs of production processes (such as providing cooling water to the compressor in alumina production). For example, during normal factory production periods, the mains power supply serves as the first power supply, driving the circulating water pump to operate stably at rated voltage and frequency via the first terminal of the power switching switch.

[0033] For example, once the first terminal of the power transfer switch is disconnected due to a fault, power outage, or other reason, it will automatically switch to the second terminal's conducting state. Only when both the second terminal of the power transfer switch and the power start switch are in the conducting state can the second power supply power the circulating water pump. In some embodiments, the power transfer switch is a dual-power transfer switch. The dual-power transfer switch has an intelligent switching function; once the first terminal is disconnected, it can automatically turn on the second terminal, seamlessly connecting the power supply and avoiding power outages in the circulating water pump due to power switching, thus preventing pump shutdown. The dual-power transfer switch has advantages such as simple mechanical structure, reliable operation, rapid switching, and resistance to high current surges. It has undergone multiple industrial scenario verifications and can complete power switching in milliseconds, meeting the stringent requirements of industrial production for continuous power supply. For example, when a sudden power outage or line maintenance interrupts the first power supply, the power transfer switch quickly activates, preparing the circuit for the backup power supply (second power supply), i.e., the second terminal of the power transfer switch immediately turns on. When the power start switch is also in the conducting state, the second power supply begins to power the circulating water pump.

[0034] According to the above technical solution, the circulating water pump power supply system includes: a first power supply, a second power supply, a power switching switch, and a power start switch. The first power supply is electrically connected to the first terminal of the power switching switch, and is used to supply power to the circulating water pump when the first terminal is in a conducting state. The second power supply is electrically connected to the second terminal of the power switching switch via the power start switch, and is used to supply power to the circulating water pump when both the second terminal and the power start switch are in a conducting state. The power switching switch is used to ensure that the second terminal is conducting when the first terminal is disconnected. This ensures the continuity and stability of the circulating water pump's power supply, avoiding problems such as compressor overheating and damage due to lack of cooling water caused by pump shutdowns, which could severely impact production continuity and equipment lifespan. It also avoids increased maintenance costs and production downtime losses.

[0035] For example, the first power supply and the second power supply are located in different distribution rooms. From the perspective of physical isolation, the risk of common-mode failure is reduced, and the failure of one distribution room is prevented from affecting the entire power supply system. Even if the main distribution room is paralyzed due to extreme conditions such as fire or flooding, the remote independent backup distribution room can still support the power supply and ensure the continuous power supply to the circulating water pump.

[0036] In some embodiments, the power start switch includes a first switch, which is electrically connected to a power switching switch, and the on or off state of the first switch is asynchronous with the on or off state of the first terminal of the power switching switch.

[0037] For example, the first switch is electrically connected to the power switching switch, and its on / off state is asynchronous with the on / off state of the first terminal of the power switching switch; that is, when the first terminal of the power switching switch is on, the first switch is off. Conversely, when the first terminal of the power switching switch is off, the first switch is on. Figure 2 This is a schematic circuit diagram of a power supply system provided for an embodiment of this application. For example,... Figure 2 As shown, the first switch may include QS and QF. Taking one side as an example, the first power supply is electrically connected to the first terminal a of the power switching switch, and the first terminal a is also electrically connected to the circulating water pump A. When the first terminal a is in the conducting state, the first power supply supplies power to the circulating water pump A. B can be a different circulating water pump from A, and its power supply switching method is the same as A, which will not be described again here. When the first terminal a is in the open state, the first switches QS and QF1 immediately switch to the conducting state. QS can be the main switch of the second power supply, and QF1 and QF2 can be the sub-switches corresponding to each circulating water pump.

[0038] This allows for a rapid response from the first switch, enabling quick switching of the backup power supply.

[0039] For example, such as Figure 2 As shown, the power supply system may further include: a first power supply detection unit. The first power supply detection unit can be any existing device for switch position detection, used to detect the on or off state of the second terminal b of the power switching switch HS to generate a power supply signal. Taking one side as an example, for instance, when the second terminal b of the power switching switch HS1 is detected to be in the on state, i.e., the switch at the second terminal b is closed, a power supply signal "1" can be generated; when the second terminal b of the power switching switch HS1 is detected to be in the off state, i.e., the switch at the second terminal b is open, a power supply signal "0" can be generated. The power start switch includes a second switch KM1, which is electrically connected to the first power supply detection unit. The second switch KM1 is used to receive the power supply signal and closes when the power supply signal is "1", indicating that the second terminal b of the power switching switch is in the on state. When the second switch KM1 and the first switches QS and QF1 are both closed, the second power supply is connected to provide power to the circulating water pump.

[0040] Therefore, the state of the second switch can be automatically controlled by detecting electrical signals, reducing the time difference caused by manual operation and avoiding prolonged power outages of the circulating water pump that would affect normal production.

[0041] In some implementations, the second switch is a manually operated switch. It can be a knife switch, push button, or electrical switch, etc., operated manually by on-site maintenance personnel. This serves as a backup solution for the aforementioned automatic switch that detects electrical signals. When interference prevents the second switch from automatically switching, manual operation can be used to switch to backup power. This provides a backup method for manual intervention on top of automatic control, addressing special and complex operating conditions.

[0042] In some embodiments, it further includes: a second power supply detection unit, electrically connected to the power start switch, the second power supply detection unit being used to detect whether the power start switch is on.

[0043] For example, the second power supply detection unit can detect whether the power start switch is on in real time, allowing maintenance personnel to promptly grasp the on / off status of the power supply line. The second power supply detection unit can be implemented using any reasonable electrical signal detection device.

[0044] In some embodiments, an alarm unit is also included, electrically connected to the power switching switch, the alarm unit being used to issue an alarm when the first terminal of the power switching switch is in the off state.

[0045] For example, the alarm unit can utilize devices such as buzzers and flashing lights to implement the alarm function. The alarm unit is connected to a power switch; when the first terminal of the power switch is in the off state, an audible and visual alarm will be triggered immediately to remind staff to pay attention to the power abnormality so that the fault can be quickly investigated and dealt with.

[0046] In some embodiments, it further includes: a third power supply detection unit, which is electrically connected to the second power supply, and the third power supply detection unit is used to detect the electrical signal provided by the second power supply to the circulating water pump when both the second terminal of the power switching switch and the power start switch are in the on state.

[0047] like Figure 2 As shown, taking one side as an example, the third power supply detection unit KH1 is connected to the second power supply. When the second terminal b of the power switching switch and the power start switches QS and QF1 are both turned on and the second power supply is supplying power, the unit detects the output electrical signal, including the detection of parameters such as voltage, current and frequency, to ensure that the power supply quality meets the standards and that the circulating water pump operates stably.

[0048] In a second aspect of this application, an alumina production system is also provided. Figure 3 This is a schematic block diagram of an alumina production system provided in an embodiment of this application. Examples include... Figure 3As shown, the alumina production system 300 may include: a compressor 310, a circulating water pump 320, and a circulating water pump power supply system 100 as described above. The circulating water pump 320 is electrically connected to the circulating water pump power supply system 100. The circulating water pump 320 is used to provide cooling water to the compressor 310 under the power supply of the circulating water pump power supply system 100, and the compressor 310 is used to provide compressed air during the alumina production process.

[0049] For example, the circulating water pump is mainly used to cool the intake and exhaust air of the compressed air fan, ensuring the compressor can operate normally. The compressor in the seeding and separating tank system primarily functions as a material transfer mechanism. Its principle is that high-pressure compressed air enters the bottom of the tank, and the pressure difference between the high-pressure air and the relatively low-pressure slurry achieves material transfer. Specifically, the air duct is placed parallel to the transfer pipe, about 1 meter above it. The air pressure is generally maintained at 0.56-0.57 MPa to ensure that the air pressure is higher than the material pressure at the bottom of the tank, thus maintaining a certain pressure difference. This forces the material from the bottom of the tank into the transfer pipe and then into the chute to enter the next seeding and separating tank. This makes the compressor crucial in the seeding and separating system. If the compressor stops, the material in the seeding and separating tank cannot be transferred, leading to material accumulation and eventually overflowing from the tank, causing production losses and environmental risks. The circulating water pump is the most important auxiliary equipment of the compressor. Its main function is to provide cooling water to cool the first stage, second stage and oil cooling of the centrifugal compressor, so as to reduce the thermal stress generated by the high temperature gas on the compressor impeller, bearings, seals and other components, and extend the service life of the equipment.

[0050] Because alumina production is continuous, uninterrupted, difficult to resume after interruptions, and cannot tolerate prolonged power outages, centrifugal compressors play a particularly significant role in the seeding and separation process, while circulating water pumps, as key auxiliary equipment, are crucial. Prolonged power outages of the circulating water pumps can lead to excessively high intake and outlet temperatures in the compressor, causing a protective shutdown. When the compressor stops and the compressed air supply ceases, the seeding and separation tanks cannot effectively transfer materials, disrupting the entire Bayer process, causing material overflow, impacting production, and posing environmental risks. Power outages often lack clear warning signs, making preventative maintenance impossible, resulting in frequent and widespread shutdowns. Given the inability to change the external environment, to reduce or even avoid production losses caused by power outages, it was decided to improve the power supply to the circulating water pumps to enhance their operational stability and that of the centrifugal compressors.

[0051] For ease of description, the term "connection" may be used herein to describe the relationship between one or more elements or features shown in the figure and other elements or features. It should be understood that "connection" may include direct connections or indirect connections via other elements or features, and this document is intended to encompass all such cases.

[0052] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, parts, components, and / or combinations thereof.

[0053] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0054] This utility model has been described through the above embodiments. However, it should be understood that the above embodiments are for illustrative purposes only and are not intended to limit the utility model to the described embodiments. Furthermore, those skilled in the art will understand that this utility model is not limited to the above embodiments, and many more variations and modifications can be made based on the teachings of this utility model, all of which fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A circulating water pump power supply system, characterized in that, include: The system includes a first power supply, a second power supply, a power switching switch, and a power start switch. The first power supply is electrically connected to the first terminal of the power switching switch, and the first power supply is used to supply power to the circulating water pump when the first terminal is in the conducting state. The second power supply is electrically connected to the second terminal of the power switching switch via the power start switch. The second power supply is used to supply power to the circulating water pump when both the second terminal and the power start switch are in the on state. The power switching switch is used to turn on the second terminal when the first terminal is off. The power start switch includes a first switch, which is electrically connected to the power switching switch. The on or off state of the first switch is asynchronous with the on or off state of the first terminal of the power switching switch. The first power supply detection unit is used to detect the on or off state of the second terminal of the power switching switch in order to generate a power supply signal. The power start switch includes a second switch, which is electrically connected to the first power supply detection unit. The second switch is used to receive the power supply signal and to turn on the power supply when the power supply signal indicates that the second terminal of the power switching switch is in a conducting state.

2. The circulating water pump power supply system as described in claim 1, characterized in that, Also includes: The second power supply detection unit is electrically connected to the power start switch, and the second power supply detection unit is used to detect whether the power start switch is conducting.

3. The circulating water pump power supply system as described in claim 1, characterized in that, Also includes: An alarm unit is electrically connected to the power switching switch, and the alarm unit is used to issue an alarm when the first terminal of the power switching switch is in the off state.

4. The circulating water pump power supply system as described in claim 1, characterized in that, The second switch is a manually operated switch.

5. The circulating water pump power supply system as described in claim 1, characterized in that, Also includes: The third power supply detection unit is electrically connected to the second power supply. The third power supply detection unit is used to detect the electrical signal provided by the second power supply to the circulating water pump when both the second terminal of the power switching switch and the power start switch are in the on state.

6. The circulating water pump power supply system as described in claim 1, characterized in that, The power switching switch is a dual power switching switch.

7. The circulating water pump power supply system as described in claim 1, characterized in that, The first power supply and the second power supply are located in different power distribution rooms.

8. An alumina production system, characterized in that, include: The compressor, the circulating water pump, and the circulating water pump power supply system as described in any one of claims 1 to 7, wherein the circulating water pump is electrically connected to the circulating water pump power supply system, the circulating water pump is used to provide cooling water to the compressor under the power supply of the circulating water pump power supply system, and the compressor is used to provide compressed air during the alumina production process.

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