Safety control circuit applied to starting of large-scale equipment

Abstract

The utility model belongs to the technical field of large-scale power equipment starting, and relates to a safety control circuit applied to large-scale equipment starting, which comprises a switch cabinet, a trip coil FQ, a circuit breaker QF, a field switch SB, a trip protection device, a trip connection sheet, a remote control switch K, a starting protection connection sheet and a remote controller, the switch cabinet is connected in series with a tripping coil FQ and a circuit breaker QF and then connected to a negative electrode of a power supply to form a loop, the switch cabinet is connected in series with a field switch SB, a tripping protection device and a tripping connecting piece, the remote control switch K is connected in series and in parallel with a starting protection connecting piece, and the remote control switch K is in remote wireless connection with a remote controller. The device can be stopped at any time when being started, the safety of the device is ensured, people can be far away from the device when the large-scale device is started, and the safety of the people is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of starting large-scale power equipment, and in particular relates to a safety control circuit used for starting large-scale equipment. Background Art

[0002] In the modern industrial field, the operation of large-scale equipment plays a vital role in production. However, the startup process of large-scale equipment is often accompanied by potential safety risks, especially the first startup after installation, which is often accompanied by unpredictable risks. Once an abnormality is found during the startup process, the operator must press the emergency stop button next to the equipment to stop the equipment and prevent the fault from expanding.

[0003] A drawback of the existing technology: This emergency stop method during startup requires the operator to be near a push button box near the equipment, ready to press the emergency stop button at any time. If a serious equipment failure occurs, such as an explosion or runaway, injuries can easily occur. Injuries during equipment startup are common in the industry. Therefore, a safety control circuit for large-scale equipment startup is proposed. Utility Model Content

[0004] The purpose of the utility model is to provide a safety control circuit for starting large equipment, which has a safety control function for starting large equipment and solves the problem in the prior art that an operator presses an emergency stop button next to a button box near the equipment, which may easily cause an injury accident if a serious fault occurs in the equipment.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is as follows: the present invention provides a safety control circuit for starting large equipment, including a switch cabinet, a trip coil FQ, a circuit breaker QF, an on-site switch SB, a trip protection device, a trip connector, a remote control switch K, a starting protection connector and a remote control. The switch cabinet is connected to the positive pole of the power supply, the switch cabinet is connected in series with the trip coil FQ and the circuit breaker QF and then connected to the negative pole of the power supply to form a loop, the switch cabinet and the on-site switch SB, the trip protection device and the trip connector are connected in series, the remote control switch K and the starting protection connector are connected in series and in parallel, and the remote control switch K is remotely wirelessly connected to the remote control.

[0006] Preferably, the remote control and the remote control switch K are connected wirelessly via infrared remote control.

[0007] Preferably, an emergency trip switch is provided in the switch cabinet.

[0008] Preferably, the remote control switch K is a normally open switch.

[0009] Preferably, the on-site switch SB is a manual switch.

[0010] Preferably, the remote control switch K is provided with a status indicator light.

[0011] Compared with the prior art, the advantages and positive effects of the present invention are:

[0012] 1. The utility model can realize the shutdown of the equipment at any time when it is started, ensuring the safety of the equipment. When the large equipment is started, the personnel can stay away from the equipment to ensure the safety of the personnel;

[0013] 2. The utility model has a safety control function for starting large equipment, which solves the problem in the prior art that operators press the emergency stop button next to the button box near the equipment, which may easily cause injuries if a serious failure of the equipment occurs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, a brief introduction will be given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0015] Figure 1 This is a circuit diagram of a safety control circuit used for starting large equipment;

[0016] In the above figure, 1. switch cabinet, 2. trip protection device, 3. trip connector, 4. start protection connector, 5. remote control. DETAILED DESCRIPTION

[0017] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described below with reference to the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.

[0018] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0019] Example 1, as Figure 1As shown, a safety control circuit for starting large equipment includes a switchgear 1, a tripping coil FQ, a circuit breaker QF, an on-site switch SB, a tripping protection device 2, a tripping connector 3, a remote control switch K, a starting protection connector 4, and a remote control 5. The switchgear 1 is connected to the positive terminal of the power supply. It also manages the operating status of various components, integrating multiple protection and control functions for ease of maintenance and management, and improving system reliability. The switchgear 1 can control the start and stop of the equipment and provide fault protection. By centrally managing the power supply, the safety and reliability of equipment operation can be improved. The switchgear 1 is connected in series with the tripping coil FQ and the circuit breaker QF, and then connected to the negative terminal of the power supply to form a circuit. When energized, the tripping coil FQ closes, controlling the activation of the tripping relay to trip and de-energize the large equipment. In an emergency, the tripping coil FQ can quickly trip and cut off the power supply, ensuring equipment shutdown. Its rapid response capability allows for timely shutdown in abnormal situations, thereby reducing the risk of accidents. The circuit breaker QF is used to cut off the current in the circuit, playing the role of overload protection and short-circuit protection. It remains in a closed state during normal operation and can quickly break the circuit in the event of a fault, avoiding current overload and ensuring the safety of equipment and operators.

[0020] The switch cabinet 1 is connected in series with the on-site switch SB, the tripping protection device 2 and the tripping connector 3, and the remote control switch K is connected in series and in parallel with the starting protection connector 4. The remote control switch K is remotely and wirelessly connected to the remote controller 5. The operator can manually trip the equipment through the on-site switch SB, providing an intuitive control method for emergency operation when needed. The tripping protection device 2 is used to monitor the operating status of large equipment, can quickly issue an alarm and trigger a tripping action to ensure safety, and belongs to the existing technical solution. The tripping connector 3 and the starting protection connector 4 are used to realize the transmission of tripping signals in the circuit and can withstand large current protection circuits. Moreover, the tripping connector 3 and the starting protection connector 4 are manual connectors used as safety devices. When the tripping protection device 2 and the remote control switch K are not needed, the tripping connector 3 and the starting protection connector 4 are removed to keep the circuit in an open state.

[0021] The remote control switch receives signals from remote controller 5 to control the device's start and stop, as well as related protective actions. This allows for control of the device from a safe distance, minimizing operational risks. Operators can use remote controller 5 to send control signals for remote control of the device, improving operational flexibility and safety while reducing the risk of operating in hazardous areas.

[0022] The remote controller 5 is wirelessly connected to the remote control switch K via infrared remote control, which improves the flexibility of operation and allows operators to control the device from a safe distance.

[0023] The switch cabinet 1 is provided with an emergency trip switch. In an emergency, the power supply can be cut off through the switch cabinet 1, providing additional safety protection, ensuring that the power can be quickly cut off in the event of a serious fault in the equipment, reducing the risk of accidents.

[0024] The remote control switch K is a normally open switch. Under normal circumstances, the remote control switch K remains in the open state and is closed only when a remote control signal is received, which simplifies the operation process and makes the device startup smoother.

[0025] The field switch SB is a manual switch that manually controls the start and stop of the equipment. As a backup control method, it can respond quickly in an emergency and facilitate flexible response by the operator.

[0026] The remote control switch K is provided with a status indicator light. The status indicator light indicates the working status of the remote control switch in real time, provides intuitive feedback, helps the operator quickly understand the current status, and enhances the safety and efficiency of the operation.

[0027] Usage steps: When starting large equipment, connect the starting protection connecting piece 4. The operator stands in a safe area with the remote control 5 and observes the starting status. Once an abnormality is found during the startup of the equipment, press the button of the remote control 5 to stop the equipment urgently. The remote control 5 transmits the information to the remote control switch K. After the remote control switch K is closed, the tripping coil FQ is energized and closed, and the tripping relay in the large equipment is activated, the machine trips, and the equipment is opened and shut down.

[0028] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology, and the circuit connection adopts the conventional connection method in the existing technology. It will not be described in detail here. The content not described in detail in this specification belongs to the existing technology known to professional and technical personnel in this field.

[0029] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any other form. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes for application in other fields. However, any simple modification, equivalent change and modification of the above embodiment made according to the technical essence of the present invention without departing from the content of the technical solution of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A safety control circuit for starting large equipment, characterized in that: The invention comprises a switch cabinet, a tripping coil FQ, a circuit breaker QF, an on-site switch SB, a tripping protection device, a tripping connecting piece, a remote control switch K, a starting protection connecting piece and a remote controller. The switch cabinet is connected to the positive pole of the power supply. The switch cabinet is connected in series with the tripping coil FQ and the circuit breaker QF and then connected to the negative pole of the power supply to form a loop. The switch cabinet and the on-site switch SB, the tripping protection device and the tripping connecting piece are connected in series, and the remote control switch K and the starting protection connecting piece are connected in series and in parallel. The remote control switch K is remotely and wirelessly connected to the remote controller.

2. A safety control circuit for starting large equipment according to claim 1, characterized in that: The remote control and the remote control switch K are remotely connected wirelessly using infrared remote control.

3. A safety control circuit for starting large equipment according to claim 1, characterized in that: An emergency trip switch is provided in the switch cabinet.

4. A safety control circuit for starting large equipment according to claim 1, characterized in that: The remote control switch K is a normally open switch.

5. The safety control circuit for starting large equipment according to claim 1, characterized in that: The field switch SB is a manual switch.

6. A safety control circuit for starting large equipment according to claim 1, characterized in that: The remote control switch K is provided with a status indicator light.

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