Intelligent power recovery system

Abstract

The utility model belongs to the technical field of closing devices, and particularly relates to an intelligent power recovery system, which comprises a 220V alternating-current power supply, an air switch, a first intermediate relay and a second intermediate relay, the positive output end of the 220V alternating-current power supply is electrically connected with the air switch, and the air switch is electrically connected with a coil of the first intermediate relay. A coil of the first intermediate relay is electrically connected to the negative output end of the 220V alternating current power supply, the air switch is electrically connected with a normally open contact of the first intermediate relay, and the normally open contact of the first intermediate relay is electrically connected with a normally closed contact of the first intermediate relay. A normally closed contact of the first intermediate relay is electrically connected with a coil of the second intermediate relay. According to the utility model, the technical problems that the normal production order is influenced or economic loss is caused due to overlong power failure and shutdown time of facility equipment or production accidents are caused due to overlong shutdown time and the like are solved.

Description

Technical Field

[0001] This utility model belongs to the technical field of closing devices, specifically relating to an intelligent power restoration system. Background Technology

[0002] Air compressors are crucial air supply equipment in the electrolytic aluminum production process, playing vital roles in feeding, shelling, unloading, and tank cooling. A shutdown of the air supply system will severely impact normal electrolytic aluminum production. The air compressor circulating water distribution room is the sole power supply system for the air compressor's cooling water pumps. A power outage in the distribution room will cause the water pumps to stop, and without cooling water, the air compressors will immediately shut down, resulting in an immediate interruption of air supply. Even if the power supplier restores power immediately, it takes approximately ten minutes for personnel to reach the distribution room and manually restart the compressor after the power switch trips. Adding the air compressor startup preparation time, this process typically takes seventeen to eighteen minutes, impacting the economical operation of the electrolytic cells. Utility Model Content

[0003] To address the technical problem of power outages affecting air compressor shutdown and airflow interruption, this utility model provides a highly safe, easy-to-use, and efficient intelligent power restoration system.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0005] An intelligent power restoration system includes a 220V AC power supply, an air switch, a first intermediate relay, and a second intermediate relay. The positive output terminal of the 220V AC power supply is electrically connected to the air switch. The air switch is electrically connected to the coil of the first intermediate relay. The coil of the first intermediate relay is electrically connected to the negative output terminal of the 220V AC power supply. The air switch is electrically connected to the normally open contact of the first intermediate relay. The normally open contact of the first intermediate relay is electrically connected to the normally closed contact of the first intermediate relay. The normally closed contact of the first intermediate relay is electrically connected to the coil of the second intermediate relay. The coil of the second intermediate relay is electrically connected to the negative output terminal of the 220V AC power supply.

[0006] It also includes a first push-button switch, a second push-button switch, and an AC contactor. The air switch is electrically connected to the first push-button switch, the first push-button switch is electrically connected to the second push-button switch, and the second push-button switch is electrically connected to the coil of the AC contactor.

[0007] The first push-button switch is connected in parallel to the normally open contact of an AC contactor, and the normally open contact of the AC contactor is connected in parallel to the normally open contact of a second intermediate relay.

[0008] The normally closed contact of the first intermediate relay is a time-delay contact.

[0009] The first push-button switch has a normally open push-button switch contact, and the second push-button switch has a normally closed push-button switch contact.

[0010] It also includes a universal circuit breaker, which is electrically connected between the positive output terminal of the 220V AC power supply and the air switch.

[0011] Compared with the prior art, the advantages of this utility model are:

[0012] This invention does not affect the normal start-up and stop operation of the circuit breaker, nor does it involve the various protective functions of the circuit breaker. It simply provides a start signal for the instant power is restored after a power outage, and the circuit breaker resumes normal operation after 2 seconds. This invention is mainly applied to facilities and equipment such as unattended power distribution rooms, fans, and water pumps that urgently need to restore power for production in a short time. It solves the technical problem of not being able to restore power in a timely manner after a power outage, which can affect normal production order, cause economic losses, or lead to production accidents due to prolonged power outages. Attached Figure Description

[0013] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0014] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0015] Figure 1 This is the circuit diagram of this utility model.

[0016] Wherein: AC is 220V AC power supply, Q1 is air switch, KA1 is first intermediate relay, KA2 is second intermediate relay, SB1 is first push-button switch, SB2 is second push-button switch, KM is AC contactor, and P is universal circuit breaker. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. These descriptions are only for further illustrating the features and advantages of this utility model, and not for limiting the claims of this utility model. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0018] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0019] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0020] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0021] A smart power restoration system, such as Figure 1As shown, the circuit includes a 220V AC power supply AC, an air switch Q1, a first intermediate relay KA1, a second intermediate relay KA2, a first push-button switch SB1, a second push-button switch SB2, a universal circuit breaker P, and an AC contactor KM1. The positive output terminal of the 220V AC power supply AC is connected to the coil of the first intermediate relay KA1 through the air switch Q1, while the coil of KA1 is connected to the negative output terminal of the 220V AC power supply AC. The positive and negative terminals of the 220V AC power supply AC form a circuit through the air switch Q1 and the coil of the first intermediate relay KA1, respectively. When the power is turned on, the coil of the first intermediate relay KA1 is energized and its normally open contact closes, causing the coil of the AC contactor KM1 to be energized and its main contacts to close, thereby connecting the load circuit. The air switch Q1 is also electrically connected to the first push-button switch SB1, which is connected in series with the second push-button switch SB2. The second push-button switch SB2 is also electrically connected to the coil of the AC contactor KM1. The normally closed contact of the first intermediate relay KA1 is connected to the coil of the second intermediate relay KA2, which is also connected to the negative output terminal of the 220V AC power supply. Therefore, when the first intermediate relay KA1 is energized, the coil of the second intermediate relay KA2 will also be energized, and its normally open contact will close, further ensuring the stable operation of the entire circuit. The universal circuit breaker P is electrically connected between the positive output terminal of the 220V AC power supply and the air switch Q1, providing protection against overload or short circuit.

[0022] Furthermore, preferably, the normally closed contact of the first intermediate relay KA1 is a time-delay contact. The first push-button switch SB1 is a normally open push-button switch contact, and the second push-button switch SB2 is a normally closed push-button switch contact.

[0023] The working process of this utility model is as follows: Air switch Q1 is taken from the upper power supply side of universal circuit breaker P. Air switch Q1 is in the closed state when it is in normal use. Its operation sequence is as follows: when the power supply side experiences a power outage and restores power supply in a short time, air switch Q1 is energized, the coil of the first intermediate relay KA1 is energized and closes, the normally open contact of the first intermediate relay KA1 closes, the coil of KA2 closes, the normally open contact of KA2 closes, the coil of AC contactor KM1 is energized and closes, the moving contact of the circuit breaker closes, the circuit breaker completes the start, the normally closed contact of the first intermediate relay KA1 opens after a delay of 2 seconds when the coil of the first intermediate relay KA1 is energized and closed, the coil of the second intermediate relay KA2 is de-energized and released, the normally open contact of the second intermediate relay KA2 opens, the coil of AC contactor KM1 continues to operate with a self-locking contact (if the AC contactor KM1 is in the inching start mode, the circuit breaker will have a mechanical self-locking mechanism after starting to keep the moving contact of the circuit breaker closed). If the circuit breaker stops due to overcurrent or other protective actions during operation, and is stopped manually, and there is power on the power supply side of the circuit breaker, the coil of the first intermediate relay KA1 will always be energized and engaged, and the normally closed contact of the first intermediate relay KA1 will be in the open state after a delay. The coil of the second intermediate relay KA2 will not be energized, and the normally open contact of the second intermediate relay KA2 will always be in the open state. The coil of the AC contactor KM1 will not be energized and engaged.

[0024] The above description only describes the preferred embodiments of the present utility model. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model, and all such changes should be included within the protection scope of the present utility model.

Claims

1. An intelligent power restoration system, characterized in that: The system includes a 220V AC power supply, an air switch (Q1), a first intermediate relay (KA1), and a second intermediate relay (KA2). The positive output terminal of the 220V AC power supply is electrically connected to the air switch (Q1). The air switch (Q1) is electrically connected to the coil of the first intermediate relay (KA1). The coil of the first intermediate relay (KA1) is electrically connected to the negative output terminal of the 220V AC power supply. The air switch (Q1) is electrically connected to the normally open contact of the first intermediate relay (KA1). The normally open contact of the first intermediate relay (KA1) is electrically connected to the normally closed contact of the first intermediate relay (KA1). The normally closed contact of the first intermediate relay (KA1) is electrically connected to the coil of the second intermediate relay (KA2). The coil of the second intermediate relay (KA2) is electrically connected to the negative output terminal of the 220V AC power supply.

2. The intelligent power restoration system according to claim 1, characterized in that: It also includes a first push-button switch (SB1), a second push-button switch (SB2), and an AC contactor (KM1). The air switch (Q1) is electrically connected to the first push-button switch (SB1), the first push-button switch (SB1) is electrically connected to the second push-button switch (SB2), and the second push-button switch (SB2) is electrically connected to the coil of the AC contactor (KM1).

3. The intelligent power restoration system according to claim 2, characterized in that: The first push-button switch (SB1) is connected in parallel to the normally open contact of an AC contactor (KM1), and the normally open contact of the AC contactor (KM1) is connected in parallel to the normally open contact of a second intermediate relay (KA2).

4. The intelligent power restoration system according to claim 1, characterized in that: The normally closed contact of the first intermediate relay (KA1) is a time-delay contact.

5. The intelligent power restoration system according to claim 3, characterized in that: The first push button switch (SB1) is a normally open push button switch contact, and the second push button switch (SB2) is a normally closed push button switch contact.

6. The intelligent power restoration system according to claim 1, characterized in that: It also includes a universal circuit breaker (P), which is electrically connected between the positive output terminal of the 220V AC power supply and the air switch (Q1).

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