Low-cost ATS (automatic transfer system) electrical interlocking removing circuit

Abstract

The utility model discloses a low-cost ATS electrical interlocking removing circuit comprising a main body assembly comprising a controller which is connected with a first resistor; the de-interlocking assembly comprises a triode, a plurality of relays, a power supply voltage and an execution device; and the triode is connected with the first resistor. The problems that when an existing parallel function type product normally operates, electrical linkage is needed to prevent unavoidable safety accidents caused by simultaneous closing of multiple switches, but when the parallel function is needed to take effect, specific switches which cannot be closed at the same time are required to be closed at the same time in a short time; according to the implementation mode of electrical interlocking, a closing loop of each switch is connected with closing and opening indication contacts of other switches in series, so that nodes need to be short-circuited when electrical interlocking is solved, and when a plurality of switches are generally arranged, a plurality of electrical interlocking solving relays need to be arranged for a plurality of switches, so that the cost is high, and the complexity of control logic is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of low-voltage electrical appliances, in particular to a low-cost ATS electrical interlocking circuit. Background Art

[0002] ATS, an automatic transfer switch, is mainly suitable for emergency power supply systems with a rated voltage of no more than 1000V AC or 1500V DC. It interrupts power supply to the load during power supply conversion.

[0003] However, it still has the following disadvantages in actual use:

[0004] In existing large-current integrated ATS switches, the controller is often required to close and open multiple switches according to a predetermined logic. In particular, for products with parallel functions, electrical interlocking is required during normal operation of the product to prevent inevitable safety accidents caused by the simultaneous closing of multiple switches. However, when the parallel function is required to take effect, specific switches that cannot be closed at the same time are required to be closed at the same time for a short time. The implementation method of electrical interlocking is that the closing circuit of each switch is connected in series with the closing and opening indication contacts of other switches, so these nodes need to be short-circuited when releasing the electrical interlocking. Generally, when there are multiple switches, several electrical interlocking relays need to be set for several switches, which is costly and increases the complexity of the control logic. Utility Model Content

[0005] Technical solutions to be solved

[0006] The utility model aims to provide a low-cost ATS de-electrical interlocking circuit, which solves the problem in the existing large-current integrated ATS switch proposed in the above background technology by means of a de-electrical interlocking component, that is, the controller is often required to close and open multiple switches according to a predetermined logic. In particular, for products with parallel functions, electrical interlocking is required during normal operation of the product to prevent inevitable safety accidents caused by simultaneous closing of multiple switches. However, when the parallel function is required to take effect, specific switches that cannot be closed at the same time are required to be closed at the same time for a short time. The electrical interlocking is implemented in that the closing circuit of each switch is connected in series with the closing and opening indication contacts of other switches. Therefore, these nodes need to be short-circuited when de-electrical interlocking is performed. Generally, when there are multiple switches, several de-electrical interlocking relays need to be set for several switches, which is costly and increases the complexity of the control logic.

[0007] Technical Solution

[0008] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0009] The utility model is a low-cost ATS electrical interlocking circuit, comprising:

[0010] The main component includes a controller, and the controller is connected to a first resistor;

[0011] Unlocking components, including transistors, multiple relays, power supply voltage and actuators;

[0012] The transistor is connected to the first resistor.

[0013] Further, the triode is connected to a plurality of relays to form an electrical interlocking loop, each electrical interlocking loop corresponds to a power supply voltage, and the power supply voltage is a switch;

[0014] The relay is connected with an actuator;

[0015] Specifically, each electrical interlocking circuit corresponds to a switch, so that multiple relays can be uniformly opened or closed by opening and closing the switch, reducing costs; through the controller and switch, the system operator can easily control the status of relays and actuators, and the triggering method of the interlocking function can be adjusted according to actual needs, providing a more flexible control method.

[0016] Furthermore, a second resistor is provided on the other side of the controller connected to the first resistor, and the first resistor and the second resistor are connected in parallel;

[0017] Specifically, a second resistor is provided so that the execution state of the controller can be switched when in use.

[0018] Furthermore, in the parallel circuit of the second resistor, one end is grounded;

[0019] Specifically, when the controller switches to the second resistor, the controller is in a state where it does not need to be unlocked, so that all relays or actuators are in a non-triggered state, and the unlocking function is ineffective.

[0020] Furthermore, the first resistor controls the transistor, the relay, the power supply voltage and the actuator;

[0021] Specifically, such a setting allows one controller to control the unlocking relays of all switches, reducing costs, control pins and complexity; high reliability, by correctly configuring and installing relays, actuators and controllers, to ensure the reliability of the system; appropriate resistance connection and correct power supply also help to ensure the stability and reliability of the system and reduce the risk of failure.

[0022] Further, the controller has two execution states;

[0023] Specifically, the controller can switch the execution status and ensure that the system can operate safely under specific conditions through the electrical interlocking circuit and the unlocking function; when the unlocking conditions are met, the system can be unlocked and allow related equipment to work, effectively preventing safety risks caused by misoperation.

[0024] Beneficial Effects

[0025] Compared with the prior art, the advantages of the present invention are:

[0026] 1. In the utility model, the control device is connected to the first resistor, and the first resistor is connected to the transistor, the transistor and multiple relays form an electrical interlocking loop, each loop corresponds to a switch, so that one control device controls all the electrical interlocking relays, reducing costs, control pins and complexity.

[0027] 2. Based on beneficial effect 1, the control device is connected to the first resistor and the second resistor at the same time to form a parallel connection, so that the control device can switch the execution state. When the control device is in the second resistor, there is no need to unlock the interlock, all relays or actuators are in a non-triggered state, and the unlocking function is not effective; when the controller switches to the first resistor, the unlocking function takes effect, and the control device controls all unlocking electrical interlocking relays.

[0028] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0030] Figure 1 This is a schematic diagram of the circuit structure of the utility model.

[0031] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0032] 11. Controller; 12. First resistor; 13. Second resistor; 21. Transistor; 22. Relay; 23. Power supply voltage; 24. Actuator. DETAILED DESCRIPTION

[0033] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0034] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific implementation methods disclosed below.

[0035] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0036] Embodiment 1

[0037] See also Figure 1 As shown, this embodiment is a low-cost ATS electrical interlocking circuit, including:

[0038] The main component includes a controller 11, and the controller 11 is connected to a first resistor 12;

[0039] The unlocking component includes a transistor 21, a plurality of relays 22, a power supply voltage 23 and an actuator 24;

[0040] The transistor 21 is connected to the first resistor 12;

[0041] The transistor 21 is connected to a plurality of relays 22 to form an electrical interlocking loop, each of which corresponds to a power supply voltage 23, which is a switch;

[0042] The relay 22 is connected to an actuator 24;

[0043] A second resistor 13 is provided on the other side of the controller 11 connected to the first resistor 12, and the first resistor 12 and the second resistor 13 are connected in parallel;

[0044] In the parallel circuit of the second resistor 13, one end is grounded;

[0045] The first resistor 12 controls the transistor 21, the relay 22, the power supply voltage 23 and the actuator 24;

[0046] The controller 11 has two execution states;

[0047] How to use the unchained components, publish the following steps:

[0048] When working normally, multiple relays 22 such as relay1 and relay2 are connected to the corresponding electrical interlocking circuit, each electrical interlocking circuit corresponds to a power supply voltage 23, that is, a switch, and other types of signals may be connected in series in the circuit; when it is not necessary to unlock the interlock, the controller 11 switches to the second resistor 13, and all the above relays 22 or actuators 24 are in a non-triggered state, and the unlocking function does not take effect;

[0049] When the interlocking function needs to be activated, the controller 11 switches to the first resistor 12. The controller 11 controls the transistor 21 to be turned on through the first resistor 12. After the transistor 21 is turned on, all the actuators 24 or relays 22 connected thereto are energized, thereby achieving closure, so that the interlocking function is activated.

[0050] Thus, one controller 11 controls all the electrical interlocking relays 22, reducing the cost, control pins and complexity;

[0051] The above steps can improve your functionality.

[0052] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A low-cost ATS electrical interlocking circuit, characterized in that: include: The main body component comprises a controller (11), and the controller (11) is connected to a first resistor (12); An unlocking component includes a transistor (21), a plurality of relays (22), a power supply voltage (23) and an actuator (24); The transistor (21) is connected to the first resistor (12).

2. A low-cost ATS interlocking circuit according to claim 1, characterized in that: The triode (21) is connected to a plurality of relays (22) to form an electrical interlocking loop, each electrical interlocking loop corresponds to a power supply voltage (23), and the power supply voltage (23) is a switch; The relay (22) is connected to an actuator (24).

3. A low-cost ATS interlocking circuit according to claim 1, characterized in that: A second resistor (13) is provided on the other side of the controller (11) connected to the first resistor (12), and the first resistor (12) and the second resistor (13) are connected in parallel.

4. A low-cost ATS interlocking circuit according to claim 3, characterized in that: In the parallel circuit of the second resistor (13), one end is grounded.

5. The low-cost ATS interlocking circuit according to claim 1 is characterized in that: The first resistor (12) controls the triode (21), the relay (22), the power supply voltage (23) and the actuator (24).

6. The low-cost ATS interlocking circuit according to claim 1 is characterized in that: The controller (11) has two execution states.

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