Pressure monotonic system for coke oven carbonization chamber

Abstract

The invention relates to the field of coke oven carbonization chamber pressure control, and discloses a coke oven carbonization chamber pressure monotonicity system, which comprises a plurality of sets of carbonization chamber pressure monotonicity subsystems matched with coke ovens in number, and every two coke ovens share one set of carbonization chamber pressure monotonicity subsystem; each carbonization chamber pressure monotonic subsystem comprises a control system cabinet and a field control cabinet; a DCS (Distributed Control System) is arranged in the control system cabinet, and acquires data and controls field equipment through a field bus module; each control system cabinet is connected with the field control cabinets at the top of the two coke ovens through optical fibers; each coke oven top gas collecting pipe walking board is provided with a plurality of field control cabinets, and the plurality of field control cabinets are connected by adopting a star topology network; the number of the monitoring operation stations is matched with that of the coke ovens, and the multiple sets of carbonization chamber pressure monotonic subsystems are connected with the first number of monitoring operation stations arranged in the centralized control center through optical fibers in an annular topological structure. Therefore, the pressure control of the coke oven carbonization chamber is realized.

Description

Technical Field

[0001] The present invention relates to the field of coke oven carbonization chamber pressure control, and particularly relates to a pressure monotonic system for a coke oven carbonization chamber. Background Art

[0002] The pressure monotonic system for a coke oven carbonization chamber adjusts the pressure of the carbonization chamber online, so that the pressure of the coke oven carbonization chamber is stably maintained at a slightly positive pressure throughout the coking cycle; in addition, the pressure monotonic system for a coke oven carbonization chamber also involves using a water seal valve disc structure that is pneumatically driven to solve the problem of unqualified soot emission during coke oven coal charging and achieve smokeless coal charging.

[0003] During the existing pressure control process of a single coke oven carbonization chamber, the following technical problems often exist: First, the structure of the traditional carbonization chamber pressure control system is complex, with many and scattered devices, and relies on communication for integration. Once the optical cable or communication device fails, the central control room will not be able to control normally, resulting in smoke emission from the riser pipe on the coke oven top, and further causing environmental protection accidents; Second, the power supply of the traditional carbonization chamber pressure control system uses a single - circuit UPS power supply, and there is a lack of power supply monitoring. After the system power failure, it cannot be detected and repaired in time within a short period; in the later stage of coking in the traditional coke oven carbonization chamber, due to the poor pressure regulation characteristics of the water seal valve, the pressure cannot be adjusted, resulting in too high negative pressure, affecting the coking quality, and at the same time generating excessive waste gas, increasing the smoke exhaust at the oven top and aggravating environmental pollution; Third, multiple sets of pressure monotonic subsystems for carbonization chambers are connected to the first number of monitoring and operation stations set in the central control center through optical fibers in a ring topology. When any node fails, it will affect the normal communication of the entire network. And if a traditional redundant ring network is used, a set of optical fibers needs to be connected on the basis of the existing project, and the project transformation cost is high, making it difficult to implement the transformation of the existing project. Summary of the Invention

[0004] This part of the summary of the invention is used to briefly introduce the concepts, which will be described in detail in the following detailed implementation part. This part of the summary of the invention does not aim to identify the key features or essential features of the claimed technical solution, nor is it intended to limit the scope of the claimed technical solution.

[0005] The present invention proposes a pressure monotonic system for a coke oven carbonization chamber to solve one or more of the technical problems mentioned in the above background art part.

[0006] The present invention provides a coke oven carbonization chamber pressure monotonic system, comprising: multiple sets of carbonization chamber pressure monotonic sub-systems matching the number of coke ovens, wherein one set of carbonization chamber pressure monotonic sub-system is shared by every two coke ovens; each set of carbonization chamber pressure monotonic sub-system includes a control system cabinet and a field control cabinet. The control system cabinet is arranged in the coke oven cabinet room, and the field control cabinet is arranged on the gas collector platform at the top of the coke oven; the field control cabinet serves as a remote sub-station of the control system and is directly connected to the field equipment; a DCS system is arranged in the control system cabinet, and data is collected and the field equipment is controlled through a field bus module; wherein, each control system cabinet is connected to the field control cabinets at the top of the two coke ovens through optical fibers; wherein, multiple field control cabinets are arranged on the gas collector platform at the top of each coke oven, and the multiple field control cabinets are connected by a star topology network; multiple monitoring operation stations matching the number of coke ovens, the first number of monitoring operation stations among the multiple monitoring operation stations are arranged in the centralized control center, the second number of monitoring operation stations are arranged in the coke oven control room, and multiple sets of carbonization chamber pressure monotonic sub-systems are connected to the first number of monitoring operation stations arranged in the centralized control center through optical fibers in a ring topology structure.

[0007] Optionally, a coke oven carbonization chamber pressure monotonic system of the present invention further comprises: A power detection relay, which is arranged at the incoming line of the UPS power supply; the power detection relay is used to detect a power failure signal and transmit the power failure signal to the DCS system. After receiving the power failure signal, the DCS system performs an audible and visual alarm.

[0008] Optionally, the first number of monitoring operation stations are connected to two control room switches arranged in the centralized control center. Four switches are configured in each control system cabinet. The four switches include two ring network switches. Each ring network switch and each control room switch designate two optical fiber interfaces as ring network interfaces; multiple sets of carbonization chamber pressure monotonic sub-systems and the two control room switches form a ring network through the ring network interfaces.

[0009] Optionally, the four switches further include two ordinary switches, and the two ordinary switches are used for communication between the control system cabinet and the field control cabinet.

[0010] Optionally, each of the multiple monitoring operation stations is used to monitor the pressure parameter information of the corresponding coke oven carbonization chamber. Among them, the pressure parameter information includes multiple pressure values and the pressure state corresponding to each pressure value. If any one of the multiple pressure values exceeds the corresponding preset pressure value range, a light flashing alarm is triggered; the pressure state is one of the following: normal, warning, dangerous; wherein, one pressure state corresponds to one color display mode.

[0011] Optionally, each of the multiple sets of coking chamber pressure monotonic sub-systems is also used to determine the water seal valve state of the corresponding coke oven coking chamber according to multiple pressure values, where the water seal valve state is the water seal valve open state or the water seal valve closed state.

[0012] Optionally, each coking chamber pressure monotonic sub-system is configured with two UPS power supplies, and the two UPS power supplies include a first UPS power supply and a second UPS power supply; when the first UPS power supply fails, the second UPS power supply starts.

[0013] Optionally, when the first UPS power supply or the second UPS power supply is in the shutdown state, the static bypass state, or the rectifier-inverter state, maintenance personnel perform maintenance operations.

[0014] The present invention has the following beneficial effects: 1. Solve the problem of unified control among multiple devices in the traditional coking chamber pressure control system. The structure of the traditional coking chamber pressure control system is complex, with many and scattered devices, relying on communication for integration. Once the optical cable or communication equipment fails, the central control room will not be able to control normally. The present invention uses a star topology network to connect multiple on-site control cabinets to ensure that a single node failure will not affect the overall operation of the network; further, a ring topology structure is used to connect the coking chamber pressure monotonic sub-system and the monitoring operation station of the centralized control center. Even if a certain node fails, data transmission can still be carried out in the other direction, reducing the risk of control interruption caused by communication failures; the DCS system is integrated in the control system cabinet, and data is collected through the field bus module and field devices are controlled to achieve automated monitoring and regulation, reducing manual intervention and improving the production efficiency of the coke oven; 2. Solve the problems of unstable power supply in the traditional coke oven coking chamber pressure control system and poor pressure regulation of the water seal valve, which lead to a decline in coke quality and environmental pollution in the coke oven; the power supply of the traditional coking chamber pressure control system uses a single-way UPS power supply, and at the same time lacks power monitoring. It cannot be detected and repaired in time within a short time after the system power failure; the present invention sets a power detection relay at the incoming line of the UPS power supply to monitor the power failure in real time and give an alarm to ensure that the coking chamber pressure monotonic system of the coke oven responds in time and guarantees the stability of the coking chamber pressure control of the coke oven; two UPS power supplies are configured to achieve automatic switching, providing high-reliability power guarantee; further, communication redundancy is enhanced through the ring network interface and multiple switches to avoid control interruption caused by communication failures; in the later stage of coking in the traditional coke oven coking chamber, due to the poor pressure regulation characteristics of the water seal valve, the pressure cannot be adjusted, resulting in too high negative pressure, affecting the coke quality, and at the same time generating excessive waste gas, exacerbating environmental pollution. The present invention monitors the coking chamber pressure in real time through the monitoring operation station, and gives an alarm through status and color display. Once the pressure value exceeds the limit, a flashing alarm is triggered, and the water seal valve state is adjusted in time to prevent abnormal pressure, reduce waste gas emissions, and increase the gas recovery volume and coke quality; 3. The problem of high-cost transformation of traditional redundant ring networks is solved. Compared with traditional redundant ring networks, the present invention does not require additional laying of optical fibers, reducing the transformation cost. Specifically, by introducing fixed standby access nodes and mobile standby access nodes and combining the dynamic switching mechanism of standby ring network interfaces, rapid fault diagnosis and recovery of the ring network are achieved, providing flexible fault troubleshooting means, avoiding affecting the normal communication of the entire network due to single-point failures, and improving network reliability and maintenance efficiency. For traditional redundant ring networks, fault troubleshooting often requires manual inspection and replacement of equipment one by one, which is time-consuming and affects system operation. In the present invention, maintenance personnel can view the node status in real time through the maintenance personnel terminal, accurately locate the fault point, and thus quickly repair or replace the faulty equipment, improving maintenance efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In combination with the accompanying drawings and with reference to the following specific embodiments, the above and other features, advantages, and aspects of the various embodiments of the present invention will become more apparent. Throughout the drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and the elements and elements are not necessarily drawn to scale.

[0016] Figure 1 is a schematic structural diagram of the coke oven carbonization chamber pressure monotonic sub-system of the present invention; Figure 2 is a connection diagram of a star topology network among multiple on-site control cabinets in the coke oven carbonization chamber pressure monotonic sub-system of the present invention; Figure 3 is a connection diagram of a ring topology structure between multiple sets of carbonization chamber pressure monotonic sub-systems and a monitoring operation station of the present invention; Figure 4 is a monitoring and alarm diagram of the computer monitoring screen of the DCS system of the present invention; Figure 5 is a monitoring diagram of the pressure value of the coke oven carbonization chamber of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The present invention will be described in more detail below with reference to the accompanying drawings. Although some embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. On the contrary, these embodiments are provided to more thoroughly and completely understand the present invention. It should be understood that the drawings and embodiments of the present invention are only for exemplary purposes and are not used to limit the protection scope of the present invention.

[0018] It should also be noted that, for the sake of convenience of description, only parts related to the relevant invention are shown in the drawings. Without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0019] It should be noted that the concepts such as "first" and "second" mentioned in the present invention are only used to distinguish different devices, modules or units, and are not used to limit the order of functions performed by these devices, modules or units or their interdependent relationships.

[0020] It should be noted that the modification of "one" and "multiple" mentioned in the present invention is illustrative rather than restrictive. Those skilled in the art should understand that unless otherwise clearly specified in the context, it should be understood as "one or more".

[0021] The names of the messages or information exchanged between multiple devices of the present invention are only for illustrative purposes and are not used to limit the scope of these messages or information.

[0022] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0023] As Figure 1 shown, Figure 1 is a schematic structural diagram of the coke oven carbonization chamber pressure monotonic sub-system of the present invention. Figure 1 Taking the carbonization chamber pressure monotonic sub-systems of Coke Oven No. 1 and Coke Oven No. 2 as examples for illustration, in practice, the coke oven carbonization chamber pressure monotonic system includes multiple sets of carbonization chamber pressure monotonic sub-systems that match the number of coke ovens. Among them, every two coke ovens share one set of carbonization chamber pressure monotonic sub-system. For example, if the number of coke ovens is 6, then the number of carbonization chamber pressure monotonic sub-systems is 3 sets. Each set of carbonization chamber pressure monotonic sub-system includes a control system cabinet and a field control cabinet. The control system cabinet is set in the coke oven cabinet room, and the field control cabinet is arranged on the gas collecting pipe platform on the top of the coke oven. The field control cabinet serves as a remote sub-station of the control system and is directly connected to the field equipment. The control system cabinet is provided with a DCS system and collects data and controls the field equipment through a field bus module. Among them, each control system cabinet is connected to the field control cabinets on the tops of two coke ovens through optical fibers. Among them, multiple field control cabinets are arranged on the gas collecting pipe platform on the top of each coke oven. As Figure 1 shown, 17 field control cabinets are arranged on the gas collecting pipe platform on the top of Coke Oven No. 1, and the multiple field control cabinets are connected by a star topology network.

[0024] In some embodiments, the function of the carbonization chamber pressure monotonic sub-system is to adjust and control the pressure in the coke oven carbonization chamber to ensure the safety, stability and high efficiency of the carbonization process. During the carbonization process, it is crucial to accurately control the pressure in the coke oven carbonization chamber, which not only directly affects the efficiency and safety of the carbonization reaction but also relates to the quality of the final coke.

[0025] In some embodiments, the control system cabinet is arranged in the coke oven machine cabinet room. A DCS system is provided in the control system cabinet, and data is collected and field devices are controlled through a fieldbus module. Among them, each control system cabinet is connected to the field control cabinets on the tops of two coke ovens through optical fibers. The DCS system is a distributed control system, which adopts the basic design concept of decentralized control, centralized operation and management. Its main feature is centralized management and decentralized control. The control system cabinet is configured with a control module, an interface module, a communication module, a power module and a switch.

[0026] In some embodiments, the field control cabinets are arranged on the gas collecting pipe walkway on the top of the coke oven. The field control cabinets serve as remote substations of the control system and are directly connected to the field devices. The field devices can be pressure transmitters, positioners or solenoid valves, etc. Among them, multiple field control cabinets are arranged on the gas collecting pipe walkway on the top of each coke oven, and the multiple field control cabinets are connected by a star topology network. As Figure 2 shown, it is the connection diagram of a star topology network among multiple field control cabinets in the coke oven carbonization chamber pressure monotonic sub-system of the present invention. Figure 2 Among them, as an example, only the connection diagram of a star topology network between the switch and "Field Control Cabinet 1#", "Field Control Cabinet 2#", "Field Control Cabinet 16#" and "Field Control Cabinet 17#" is shown, and "Field Control Cabinets 3#" to "Field Control Cabinet 15#" are not drawn. The star topology network is a topology network structure centered on the switch, which connects each network node to the switch. In the star topology network, the switch is the most core device. The advantage of the star topology network is that it is more flexible in adding and deleting nodes, and a single node failure will not affect the overall operation of the network. Therefore, if a network failure occurs in a certain field control cabinet, it will only affect the coke oven carbonization chamber equipment it controls, and other coke oven carbonization chamber equipment will not be affected.

[0027] The coke oven carbonization chamber pressure monotonic system of the present invention includes: a plurality of monitoring and operation stations matching the number of coke ovens. For example, when the number of coke ovens is 6, the number of monitoring and operation stations is 6. The monitoring and operation stations can be the computers of the staff. The first number (which can be 3) of the plurality of monitoring and operation stations is arranged in the centralized control center to remotely control the coke oven carbonization chamber pressure monotonic sub-system; the second number (which can be 3) of the monitoring and operation stations is arranged in the coke oven control room for the convenience of the staff to view the situation of the coke oven carbonization chamber and use during the maintenance of the coke oven carbonization chamber. Multiple sets of coke oven carbonization chamber pressure monotonic sub-systems are connected to the first number (3) of the monitoring and operation stations arranged in the centralized control center through optical fibers in a ring topology structure.

[0028] In some embodiments, as Figure 3 shown, it is the connection diagram of a ring topology structure between multiple sets of coke oven carbonization chamber pressure monotonic sub-systems and the monitoring and operation stations of the present invention. Figure 3The connection relationship of the ring topology between three sets of carbonization chamber pressure monotonic subsystems and one monitoring and operation station in the central control center is shown. The ring topology is connected end to end to form a closed loop. The advantage of the ring topology is simple wiring and short lines. Even if a certain node fails, data transmission can still be carried out in the other direction, reducing the risk of control interruption caused by communication failures.

[0029] In some embodiments, the problem of unified control among multiple devices in the traditional carbonization chamber pressure control system is solved. The structure of the traditional carbonization chamber pressure control system is complex, with many and scattered devices, and relies on communication for integration. Once the optical cable or communication device fails, the central control room will not be able to control normally. The present invention uses a star topology network to connect multiple on-site control cabinets to ensure that a single node failure will not affect the overall operation of the network; further, a ring topology is used to connect the carbonization chamber pressure monotonic subsystem and the monitoring and operation station in the central control center. Even if a certain node fails, data transmission can still be carried out in the other direction, reducing the risk of control interruption caused by communication failures; the DCS system is integrated in the control system cabinet, and data is collected and on-site equipment is controlled through the field bus module to achieve automatic monitoring and regulation, reducing manual intervention and improving the production efficiency of the coke oven.

[0030] In some embodiments, in order to further solve Technical Problem 2 described in the background art section, that is, "the power supply of the traditional carbonization chamber pressure control system uses a single - path UPS for power supply, and at the same time lacks power supply monitoring. After the system power failure, it cannot be detected and repaired in time within a short period; in the later stage of coking in the traditional coke oven carbonization chamber, due to the poor pressure - regulating characteristics of the water - seal valve, the pressure cannot be adjusted, resulting in too high negative pressure, affecting the coking quality, and at the same time generating excessive waste gas, increasing the top - of - furnace smoke exhaust and aggravating environmental pollution", in some embodiments of the present invention, the coke oven carbonization chamber pressure monotonic system of the present invention further includes: A power - supply detection relay, which is arranged at the incoming line of the UPS power supply; the power - supply detection relay is used to detect the power - off signal and transmit the power - off signal to the DCS system. After receiving the power - off signal, the DCS system performs an audible and visual alarm.

[0031] In some embodiments, the power - supply detection relay is arranged at the incoming line of the UPS power supply. Its main function is to detect the power - off signal and transmit the power - off signal to the DCS system. As Figure 4 shown in the monitoring and alarm diagram of the computer monitoring screen of the DCS system of the present invention, once the DCS system receives the power - off signal, it will trigger an audible and visual alarm to remind the operator to take timely measures to prevent production interruption or equipment damage. The audible and visual alarm can be a buzzer, a siren, a color warning light or a screen alarm prompt. The UPS power supply is an uninterruptible power supply, which is an uninterruptible power supply containing an energy storage device. It is mainly used to provide uninterrupted power supply for some devices with high requirements for power supply stability.

[0032] Among them, the monitoring operation stations of the first quantity are connected to two control room switches arranged in the centralized control center. Four switches are configured in each control system cabinet. The four switches include two ring network switches. Each ring network switch and each control room switch specify two optical fiber interfaces as ring network interfaces. Multiple sets of carbonization chamber pressure monotonic sub-systems and the two control room switches form a ring network through the ring network interfaces.

[0033] Among them, the four switches also include two ordinary switches, and the two ordinary switches are used for communication between the control system cabinet and the on-site control cabinet.

[0034] As Figure 5 shown, it is a pressure value monitoring diagram of the coke oven carbonization chamber of the present invention. Each monitoring operation station among multiple monitoring operation stations is used to monitor the pressure parameter information of the corresponding coke oven carbonization chamber. Among them, the pressure parameter information includes multiple pressure values and the pressure state corresponding to each pressure value. If any one of the multiple pressure values exceeds the corresponding preset pressure value range, a flashing light alarm is triggered. The pressure state is one of the following: normal, warning, dangerous. Among them, one pressure state corresponds to one color display mode.

[0035] Among them, each set of carbonization chamber pressure monotonic sub-systems in multiple sets of carbonization chamber pressure monotonic sub-systems is also used to determine the water seal valve state of the corresponding coke oven carbonization chamber according to multiple pressure values. Among them, the water seal valve state is the water seal valve open state or the water seal valve closed state.

[0036] In some embodiments, when any one of the multiple pressure values is greater than the preset water seal valve opening and closing threshold, the carbonization chamber pressure monotonic sub-system automatically opens the water seal valve to accelerate the gas discharge, reduce the pressure of the gas collecting pipe, and make the pressure of the gas collecting pipe in a slightly positive pressure state. Furthermore, during coal charging, the raw gas can be more smoothly introduced into the gas collecting system, and the internal pressure of the carbonization chamber can be avoided from being too high at the initial stage of coking. During the coking process, when the riser cover is opened, the raw gas in the carbonization chamber will inevitably be discharged into the atmosphere. By igniting it with the riser cover opening and ignition device, the pollution of the raw gas to the atmosphere can be greatly reduced. When any one of the multiple pressure values is less than the preset water seal valve opening and closing threshold, the carbonization chamber pressure monotonic sub-system automatically closes the water seal valve to reduce the gas discharge, maintain an appropriate pressure, and prevent air backflow.

[0037] Among them, each set of carbonization chamber pressure monotonic sub-systems is configured with two UPS power supplies. The two UPS power supplies include a first UPS power supply and a second UPS power supply. When the first UPS power supply fails, the second UPS power supply starts.

[0038] In some embodiments, by configuring a dual-path UPS power supply, when one power supply fails, it immediately switches to the other power supply. The automatic power supply switching mechanism can reduce the downtime caused by power supply failures, thereby improving the reliability and stability of the carbonization chamber pressure monotonic sub-system.

[0039] Among them, when the first UPS power supply or the second UPS power supply is in the shutdown state, the static bypass state, or the rectifier-inverter state, maintenance personnel perform maintenance operations.

[0040] In some embodiments, the problems of poor power supply stability of the traditional coke oven carbonization chamber pressure control system and poor pressure regulation of the water seal valve, which lead to a decline in coke quality and environmental pollution in the coke oven, are solved; the power supply of the traditional carbonization chamber pressure control system uses a single-path UPS power supply, and at the same time lacks power supply monitoring. After the system power failure, it cannot be detected and repaired in time within a short period. The present invention sets a power detection relay at the incoming line of the UPS power supply to monitor the power failure in real time and alarm, ensuring that the coke oven carbonization chamber pressure monotonic system responds in time and guaranteeing the stability of the coke oven carbonization chamber pressure control; configuring two UPS power supplies to achieve automatic switching and providing high-reliability power supply guarantee; further, enhancing communication redundancy through a ring network interface and multiple switches to avoid control interruption caused by communication failures; in the later stage of coking in the traditional coke oven carbonization chamber, due to the poor pressure regulation characteristics of the water seal valve, the pressure cannot be adjusted, resulting in too high negative pressure, affecting coke quality, and at the same time generating excessive waste gas, exacerbating environmental pollution. The present invention monitors the carbonization chamber pressure in real time through a monitoring operation station, and displays alarms through status and color. Once the pressure value exceeds the limit, it triggers a flashing alarm, adjusts the state of the water seal valve in time, prevents abnormal pressure, reduces waste gas emissions, and improves the gas recovery volume and coke quality.

[0041] In some embodiments, in order to further solve the third technical problem described in the background art section, that is, "multiple sets of carbonization chamber pressure monotonic sub-systems are connected to the first number of monitoring operation stations set in the centralized control center through optical fibers in a ring topology structure. When any node fails, it will affect the normal communication of the entire network. If a traditional redundant ring network is used, a set of optical fibers needs to be connected on the basis of the existing project, and the project transformation cost is high, and it is difficult to implement the transformation of the existing project", in some embodiments of the present invention, the coke oven carbonization chamber pressure monotonic system of the present invention further includes: The centralized control center is also equipped with fixed standby access nodes and mobile standby access nodes. Among them, both the fixed standby access nodes and the mobile standby access nodes are equipped with positioning modules and communication modules. The fixed standby access nodes and the mobile standby access nodes communicate with the maintenance personnel's terminals through the communication modules and regularly upload the positions and usage statuses of the nodes. The maintenance personnel can view the positions and usage statuses of any node at any time on the maintenance personnel's terminals. In practice, the usage status can be not enabled, enabled, etc. In practice, the position can be in the centralized control center or a certain control system cabinet. In addition, standby ring network interfaces are configured for each switch in the ring network (including the control room switch and the ring network switch), and the number of standby ring network interfaces corresponds to the devices connected to the switch.

[0042] For example, if two control room switches in the centralized control center need to be connected to the first number of monitoring and operation stations, standby ring network interfaces matching the first number need to be set. According to requirements, a satisfaction rate can be set, that is, the number of standby ring network interfaces is obtained by multiplying the first number by the satisfaction rate. If full satisfaction is required, the first number of standby ring network interfaces need to be set. For the ring network switch in the control system cabinet, on the basis of 2 ring network interfaces, one more standby ring network interface needs to be configured.

[0043] When a communication fault occurs in the ring network, the standby ring network interfaces of each switch in the ring network are enabled in sequence, and it is detected whether the ring network communication is restored to troubleshoot the faulty ring network interface. Specifically, if the communication returns to normal after the i-th ring network interface is switched to the standby ring network interface, the i-th ring network interface is determined as the ring network interface to be repaired, and the 1st to the i - 1st ring network interfaces are determined as the ring network interfaces to be troubleshot.

[0044] If the ring network communication is not restored after the standby ring network interfaces of all switches in the ring network are enabled in sequence, the faulty switch is troubleshot. Specifically, the control room switch is sequentially replaced by the fixed standby access node, and the ring network switch in each control system cabinet is sequentially replaced by the mobile standby access node, and it is detected whether the ring network communication is restored to troubleshoot the faulty switch. Specifically, when the communication returns to normal after the n-th switch is replaced, the n-th switch is determined as the faulty switch, and the 1st to the n - 1st switches are determined as the switches to be troubleshot.

[0045] On this basis, the maintenance personnel can also view the positions and usage statuses of any node on the maintenance personnel's terminals. When the usage status of the mobile standby access node is enabled, it can be further viewed which switch the mobile standby access node has currently replaced, so as to carry out maintenance or replacement targeted.

[0046] In some embodiments, the problem of high-cost transformation of traditional redundant ring networks is solved. Compared with traditional redundant ring networks, the present invention does not require additional laying of optical fibers, reducing the transformation cost. Specifically, by introducing fixed standby access nodes and mobile standby access nodes and combining with the dynamic switching mechanism of standby ring network interfaces, rapid fault diagnosis and recovery of the ring network are achieved, providing flexible fault troubleshooting means, avoiding affecting the normal communication of the entire network due to single-point failures, and improving network reliability and maintenance efficiency. The fault troubleshooting of traditional redundant ring networks often requires manual inspection and replacement of equipment one by one, which is time-consuming and affects system operation. In the present invention, maintenance personnel can view the node status in real time through the maintenance personnel terminal, accurately locate the fault point, and thus quickly repair or replace the faulty equipment, improving the maintenance efficiency.

[0047] The above description is only some preferred embodiments of the present invention and an explanation of the applied technical principles. Those skilled in the art should understand that the scope of the invention involved in the present invention is not limited to the technical solutions formed by the specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the above inventive concept. For example, the technical solutions formed by mutually replacing the above features with technical features having similar functions (but not limited to) disclosed in the present invention.

Claims

1. A coke oven carbonization chamber pressure monotonic system, characterized in that: include: Multiple sets of carbonization chamber pressure monotonic subsystems matching the number of coke ovens, wherein every two coke ovens share one set of carbonization chamber pressure monotonic subsystems; each set of carbonization chamber pressure monotonic subsystems includes a control system cabinet and a field control cabinet, wherein the control system cabinet is arranged in the coke oven cabinet room, and the field control cabinet is arranged on the gas collecting pipe platform on the top of the coke oven; the field control cabinet is directly connected to the field equipment as a remote substation of the control system; a DCS system is arranged in the control system cabinet, and data is collected and field equipment is controlled through a field bus module; wherein each control system cabinet is connected to the field control cabinets on the tops of the two coke ovens through optical fibers; wherein each coke oven top gas collecting pipe platform is provided with multiple field control cabinets, and multiple field control cabinets are connected using a star topology network; A plurality of monitoring and operating stations matching the number of coke ovens, wherein a first number of the plurality of monitoring and operating stations are arranged in a centralized control center, and a second number of the monitoring and operating stations are arranged in a coke oven control room, and the plurality of carbonization chamber pressure monotonic subsystems are connected to the first number of monitoring and operating stations arranged in the centralized control center via optical fibers in a ring topology structure.

2. The coke oven carbonization chamber pressure monotonic system according to claim 1, characterized in that: Also includes: A power detection relay, which is arranged at the UPS power supply inlet; The power detection relay is used to detect a power failure signal and transmit the power failure signal to the DCS system. After receiving the power failure signal, the DCS system performs an audible and visual alarm.

3. The coke oven carbonization chamber pressure monotonic system according to claim 2, characterized in that: The first number of monitoring operation stations are connected to two control room switches arranged in the centralized control center. Each control system cabinet is configured with four switches, and the four switches include two ring network switches. Each ring network switch and each control room switch designate two optical fiber interfaces as ring network interfaces; the multiple sets of carbonization chamber pressure monotonic subsystems and the two control room switches form a ring network through the ring network interface.

4. The coke oven carbonization chamber pressure monotonic system according to claim 3, characterized in that: The four switches also include two common switches, and the two common switches are used for controlling the communication between the control system cabinet and the on-site control cabinet.

5. The coke oven carbonization chamber pressure monotonic system according to claim 4, characterized in that: Each of the multiple monitoring and operation stations is used to monitor the pressure parameter information of the corresponding coke oven carbonization chamber, wherein the pressure parameter information includes multiple pressure values ​​and the pressure state corresponding to each pressure value. If any pressure value among the multiple pressure values ​​exceeds the corresponding preset pressure value range, a light flashing alarm is triggered; the pressure state is one of the following: normal, warning, danger; wherein one pressure state corresponds to one color display mode.

6. The coke oven carbonization chamber pressure monotonic system according to claim 5, characterized in that: Each of the multiple carbonization chamber pressure monotonic subsystems is also used to determine the state of a water seal valve of the corresponding coke oven carbonization chamber according to the multiple pressure values, wherein the state of the water seal valve is the water seal valve open state or the water seal valve closed state.

7. The coke oven carbonization chamber pressure monotonic system according to claim 1, characterized in that: Each carbonization chamber pressure monotonic subsystem is equipped with two UPS power supplies, which include a first UPS power supply and a second UPS power supply; when the first UPS power supply fails, the second UPS power supply starts.

8. The coke oven carbonization chamber pressure monotonic system according to claim 7, characterized in that: When the first UPS power supply or the second UPS power supply is in shutdown state, static bypass state or rectification and inversion state, maintenance personnel perform maintenance operations.

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