Guarantee device for calcium carbide furnace production water circulation

Abstract

The utility model discloses a calcium carbide furnace production water circulation guarantee device relates to calcium carbide furnace production equipment technical field, including circulating water pump high voltage switch cabinet and local operation room background, is provided with handcart circuit breaker in circulating water pump high voltage switch cabinet, is equipped with auxiliary contact aviation plug on handcart circuit breaker, and auxiliary contact aviation plug is connected with auxiliary contact normally open point terminal through wire, is equipped with signal line on auxiliary contact normally open point terminal, and signal line and local operation room background electric connection. Auxiliary contact aviation plug of handcart circuit breaker is through normally open contact (NO) real -time collection circuit breaker's opening and closing state to local operation room background directly transmission through signal line to the background of native operation room, realizes remote monitoring, adopts hardwiring mode, and signal transmission is stable, is not influenced by network fluctuation or background system failure, even if transformer substation background machine dies or exits operation, and the native operation room can still accurately receive the real -time state of circulating water pump, improves system reliability.

Description

Technical Field

[0001] This utility model relates to the technical field of calcium carbide furnace production equipment. Background Technology

[0002] In the calcium carbide furnace production process, circulating water and circulating water pumps form an indispensable cooling guarantee system. The start / stop signal of the circulating water pump, acting as the nerve signal of this system, plays a crucial guiding and regulating role in the entire production process. Currently, the start / stop signal is transmitted and displayed by reading signals from the substation's backend computer via OPC. When the substation's backend computer malfunctions or exits the system, the start / stop signal disappears. Furthermore, signal instability during OPC transmission can also cause the start / stop signal to disappear. The disappearance of the start / stop signal severely affects the on-duty personnel's ability to judge abnormal situations during production, posing a significant safety hazard to the safe and stable operation of the calcium carbide furnace.

[0003] According to the actual operation of a certain factory, the start and stop signals of the circulating water pumps disappeared an average of 24 times per month (24 times is the total number of times the start and stop signals of the 8 circulating water pumps disappeared). When the OPC transmission signal is unstable, the substation back-end computer crashes or exits the system, the start and stop signals of the circulating water pumps displayed in the local control room will disappear. The disappearance of the start and stop signals seriously affects the on-duty personnel's judgment of abnormal situations in the production process, posing a significant safety hazard and easily causing other equipment failures.

[0004] The circulating water pump start / stop signal is transmitted and displayed by reading signals from the substation's backend computer via OPC. When the substation's backend computer malfunctions or exits the system, the circulating water pump start / stop signal disappears. Furthermore, signal instability during OPC transmission can also cause the signal to disappear. The disappearance of the circulating water pump start / stop signal severely impacts the on-duty personnel's ability to assess abnormal situations during production, posing a significant safety hazard to the safe and stable operation of the calcium carbide furnace. Utility Model Content

[0005] The purpose of this utility model is to provide a water circulation protection device for calcium carbide furnace production in order to solve the above-mentioned technical problems.

[0006] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0007] A water circulation protection device for calcium carbide furnace production includes a high-voltage switch cabinet for a circulating water pump and a local control room. The high-voltage switch cabinet for the circulating water pump is equipped with a handcart circuit breaker. The handcart circuit breaker is equipped with an auxiliary contact aviation plug. The auxiliary contact aviation plug is connected to an auxiliary contact normally open terminal block via a wire. The auxiliary contact normally open terminal block is equipped with a signal line, which is electrically connected to the local control room.

[0008] Through the above scheme, the auxiliary contact aviation plug of the handcart circuit breaker collects the opening and closing status of the circuit breaker (i.e., the start and stop signal of the circulating water pump) in real time through the normally open contact (NO), and transmits it directly to the local control room backend through the signal line to realize remote monitoring. The hard-wiring method ensures stable signal transmission and is not affected by network fluctuations or backend system failures. Even if the substation backend machine crashes or goes out of operation, the local control room can still accurately receive the real-time status of the circulating water pump, thus improving system reliability.

[0009] Furthermore, a PLC controller is installed on the signal line, and a network cable is provided between the PLC controller and the back-end of the local operation room.

[0010] With the above solution, the signal line is connected to the PLC controller for logic processing, and then the data is uploaded to the local control room backend via the network cable, forming an automated monitoring link. The PLC can preprocess the signal to reduce false alarms or missed alarms, and the network cable transmission improves the data transmission rate and stability, making it suitable for industrial environments.

[0011] Furthermore, an anti-interference shielding layer is provided between the auxiliary contact aviation plug and the handcart circuit breaker, and the signal line is a shielded twisted pair cable, with the shielding layer grounded.

[0012] The above solution adds an anti-interference shielding layer between the auxiliary contact aviation plug and the handcart circuit breaker to reduce electromagnetic interference during circuit breaker operation. The signal line uses shielded twisted pair cable, and the shielding layer is reliably grounded to prevent external electromagnetic interference from affecting signal transmission.

[0013] Furthermore, a signal isolator is provided between the PLC controller and the local control room backend to isolate electrical signals on the high-voltage side and the low-voltage side.

[0014] The above solution involves adding a signal isolator between the PLC controller and the local control room backend to block the direct transmission of electrical signals between the high-voltage side (circuit breaker) and the low-voltage side (PLC and backend). This prevents high-voltage side faults (such as overvoltage and surges) from affecting the low-voltage control system, protects the PLC and backend equipment, avoids signal interference caused by grounding loops, and improves system safety.

[0015] Furthermore, the local control room is equipped with an audible and visual alarm module, which triggers an alarm when the start / stop signal of the circulating water pump is abnormal or lost.

[0016] Through the above scheme, the local control room continuously monitors the start and stop signals of the circulating water pump. If an abnormal signal is detected (such as the circuit breaker not operating as instructed or the signal being lost), an audible and visual alarm is immediately triggered to remind the operator to intervene, thereby improving the fault response speed and preventing the calcium carbide furnace cooling failure due to water circulation interruption.

[0017] Furthermore, the network cable is an industrial-grade fiber optic cable, and the PLC controller communicates with the local control room backend via a fiber optic switch.

[0018] The above solution demonstrates that optical fiber has strong resistance to electromagnetic interference, making it suitable for high-interference environments such as calcium carbide furnaces. It also ensures no signal attenuation during long-distance transmission, guaranteeing real-time data synchronization and improving system stability.

[0019] The beneficial effects of this utility model are as follows:

[0020] 1. This utility model has a simple structure. The auxiliary contact aviation plug of the handcart circuit breaker collects the opening and closing status of the circuit breaker (i.e. the start and stop signal of the circulating water pump) in real time through the normally open contact (NO), and transmits it directly to the local control room backend through the signal line to realize remote monitoring. The hard-wiring method ensures stable signal transmission and is not affected by network fluctuations or backend system failures. Even if the substation backend machine crashes or goes out of operation, the local control room can still accurately receive the real-time status of the circulating water pump, thus improving system reliability.

[0021] 2. This device, through a multi-level architecture of hard-wired data acquisition, PLC logic control, and fiber optic communication, achieves reliable switching and remote monitoring from high-voltage side status to low-voltage control. Anti-interference design and signal isolation ensure signal authenticity, while the combination of audible and visual alarms and automated processing improves the fault response speed of the calcium carbide furnace water circulation system and reduces the workload of manual inspections, comprehensively enhancing production continuity and safety. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Attached reference numerals: 1. Handcart circuit breaker; 2. High-voltage switchgear for circulating water pump; 3. Auxiliary contact aviation plug; 4. Auxiliary contact normally open terminal block; 5. Signal line; 6. PLC controller; 7. Local control room back-end; 8. Network cable. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0026] Example 1

[0027] like Figure 1 As shown, this embodiment provides a water circulation protection device for calcium carbide furnace production, including a high-voltage switch cabinet 2 for a circulating water pump and a local control room 7. The high-voltage switch cabinet 2 for the circulating water pump is equipped with a handcart circuit breaker 1. The handcart circuit breaker 1 is equipped with an auxiliary contact aviation plug 3. The auxiliary contact aviation plug 3 is connected to an auxiliary contact normally open terminal block 4 through a wire. The auxiliary contact normally open terminal block 4 is equipped with a signal line 5. The signal line 5 is electrically connected to the local control room 7. At the same time, a PLC controller 6 is installed on the signal line 5. A network cable 8 is installed between the PLC controller 6 and the local control room 7.

[0028] Therefore, the auxiliary contact aviation plug 3 of the handcart circuit breaker 1 collects the circuit breaker's opening and closing status (i.e., the start and stop signal of the circulating water pump) in real time through the normally open contact (NO), and transmits it directly to the local control room backend 7 through the signal line 5 to achieve remote monitoring. The hard-wired method ensures stable signal transmission, unaffected by network fluctuations or backend system failures. Even if the substation backend machine crashes or goes out of operation, the local control room can still accurately receive the real-time status of the circulating water pump. The signal line 5 is connected to the PLC controller 6 for logic processing, and then the data is uploaded to the local control room backend 7 through the network cable 8, forming an automated monitoring link. The PLC can preprocess the signal to reduce false alarms or missed alarms. The network cable 8 improves the data transmission rate and stability, making it suitable for industrial environments and improving system reliability.

[0029] To enhance the safety and stability of the device, an anti-interference shielding layer (not shown in the drawing) is installed between the auxiliary contact aviation plug 3 and the handcart circuit breaker 1. The signal line 5 uses shielded twisted-pair cable, and the shielding layer is grounded. A signal isolator is installed between the PLC controller 6 and the local control room backend 7 to isolate the electrical signals from the high-voltage side and the low-voltage side. The addition of an anti-interference shielding layer between the auxiliary contact aviation plug 3 and the handcart circuit breaker 1 reduces electromagnetic interference during circuit breaker operation. The signal line 5 uses shielded twisted-pair cable, and the shielding layer is reliably grounded to prevent external electromagnetic interference from affecting signal transmission. The addition of a signal isolator (electronic component, not shown in the drawing) between the PLC controller 6 and the local control room backend 7 blocks the direct conduction of electrical signals between the high-voltage side (circuit breaker) and the low-voltage side (PLC and backend), preventing high-voltage side faults (such as overvoltage and surges) from affecting the low-voltage control system, protecting the PLC and backend equipment, avoiding signal interference caused by grounding loops, and improving system safety.

[0030] Reference Figure 1 The local control room backend 7 is equipped with an audible and visual alarm module (electronic component, not shown on the drawing). When the start / stop signal of the circulating water pump is abnormal or lost, the alarm is triggered. The local control room backend 7 continuously monitors the start / stop signal of the circulating water pump. If an abnormal signal is detected (such as the circuit breaker not operating as instructed or the signal being lost), the audible and visual alarm is immediately triggered to remind the operator to intervene, improve the fault response speed, and prevent the cooling failure of the calcium carbide furnace due to water circulation interruption.

[0031] Reference Figure 1 Network cable 8 is an industrial-grade fiber optic cable. The PLC controller 6 communicates with the local control room backend 7 through a fiber optic switch. Fiber optic cables have strong anti-electromagnetic interference capabilities and are suitable for high-interference environments such as calcium carbide furnaces. Long-distance transmission has no signal attenuation, ensuring real-time data synchronization and improving system stability.

[0032] Implementation Principle: After the remote transmission upgrade of the circulating water pump signal, signal line 5 is connected to the auxiliary contact of the circuit breaker in the high-voltage switch cabinet 2 of the circulating water pump. The other end of signal line 5 is connected to the PLC, and the PLC then transmits the signal to the local control room 7 via network cable 8. The start and stop signal of the circulating water pump changes according to the position of the circuit breaker. If the substation control room malfunctions or exits the system, it will not affect the start and stop signal of the circulating water pump in the local control room 7, and there will be no unstable signal transmission. This effectively improves the stable operation of the equipment, enhances its safe and stable operation, and effectively eliminates potential safety hazards, ensuring personnel safety.

[0033] This device, through a multi-level architecture of hard-wired data acquisition, PLC logic control, and fiber optic communication, achieves reliable switching and remote monitoring from high-voltage side status to low-voltage control. Anti-interference design and signal isolation ensure signal authenticity, while the combination of audible and visual alarms and automated processing improves the fault response speed of the calcium carbide furnace water circulation system and reduces the workload of manual inspections, comprehensively enhancing production continuity and safety.

[0034] It should be noted that the connection relationships of components not specifically mentioned in this application are all assumed to be based on existing technology. Since they do not involve the inventive point and are commonly used in existing technology, the structural connection relationships are not described in detail.

Claims

1. A calcium carbide furnace production water circulation guarantee device, characterized in that, The system includes a circulating water pump high-voltage switch cabinet (2) and a local control room back-end (7). The circulating water pump high-voltage switch cabinet (2) is equipped with a handcart circuit breaker (1). The handcart circuit breaker (1) is equipped with an auxiliary contact aviation plug (3). The auxiliary contact aviation plug (3) is connected to an auxiliary contact normally open terminal block (4) via a wire. The auxiliary contact normally open terminal block (4) is equipped with a signal line (5). The signal line (5) is electrically connected to the local control room back-end (7).

2. The calcium carbide furnace water circulation guarantee device according to claim 1, characterized in that, A PLC controller (6) is provided on the signal line (5), and a network cable (8) is provided between the PLC controller (6) and the local operation room back-end (7).

3. A calcium carbide furnace water production cycle guaranteeing device according to any one of claims 1 or 2, characterized in that, An anti-interference shielding layer is provided between the auxiliary contact aviation plug (3) and the handcart circuit breaker (1), and the signal line (5) is a shielded twisted pair cable, and the shielding layer is grounded.

4. The calcium carbide furnace water circulation guarantee device according to claim 2, characterized in that, A signal isolator is provided between the PLC controller (6) and the local operation room backend (7) to isolate the electrical signals on the high-voltage side and the low-voltage side.

5. The calcium carbide furnace production water circulation guarantee device according to claim 1, characterized in that, The local operation room backend (7) is equipped with an audible and visual alarm module, which triggers an alarm when the start / stop signal of the circulating water pump is abnormal or lost.

6. The calcium carbide furnace water circulation guarantee device according to claim 2, characterized in that, The network cable (8) is an industrial-grade fiber optic cable, and the PLC controller (6) communicates with the local operation room backend (7) through a fiber optic switch.

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