Coke oven riser turning plate pressure regulation control system

Abstract

The utility model provides a pressure regulation control system for a riser of a coke oven. The pressure regulation control system comprises a PLC (Programmable Logic Controller) system, a remote monitoring system, a remote IO (Input / Output) system and a riser opening and closing regulation system, the PLC system is used for controlling the opening degree of a turning plate of the whole turning plate pressure regulating control system and changing the area of a channel of the raw gas guided into the gas collecting pipe; the remote monitoring system is installed in a central control room; the remote IO system is used for collecting and transmitting information of the turning plate air cylinder on site and transmitting an executed control instruction; and the ascending pipe opening and closing adjusting system is used for receiving information of the PLC system to open and close a flap valve of an ascending pipe bridge pipe. According to the system, a cylinder, a valve positioner and other components are arranged on a mechanical water seal flap valve, a PLC system is used for controlling the opening degree of a flap, the area of raw gas guided into a gas collecting pipe channel is changed, and the purpose of adjusting the bottom pressure of a carbonization chamber is achieved by adjusting the guided-out amount of the raw gas.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of coke oven equipment and intelligent control system, especially relates to a coke oven riser flapper pressure regulating control system. BACKGROUND

[0002] The riser of the carbonization chamber of the traditional coke oven is communicated with the gas collecting pipe through the bridge pipe and the flapper valve, the flapper valve has only two states of opening and closing, the gas collecting pipe pressure is set to a fixed value, and the pressure is kept unchanged to cope with the carbonization chambers in different coking cycles. The amount of raw gas generated in each carbonization chamber is different, so the bottom pressure of each carbonization chamber is also different. The gas collecting pipe pressure of the traditional coke oven is set to a fixed value, the gas generation amount is large at the beginning of coking, the bottom pressure of the carbonization chamber is large, and the raw gas is easy to leak to the outside of the oven door or to the combustion chamber through the cracks in the oven wall. The gas generation amount is small at the end of coking, the bottom pressure of the carbonization chamber decreases to negative pressure, and air leaks into the carbonization chamber. In addition, the flapper valve is manually operated, the working environment is poor, and the labor intensity is large. SUMMARY

[0003] Technical scheme: In order to solve the above technical problems, the utility model is developed based on the existing manual control equipment and functions, and the coke oven riser automatic opening and closing system is developed, which can automatically interlock control the riser cover, the flapper valve, the high-low pressure ammonia valve and other equipment according to the coke oven process production process, has manual operation function, and realizes online transformation.

[0004] Specifically, a coke oven riser flapper pressure regulating control system is provided, which specifically comprises a PLC system, a remote monitoring system, a remote IO system and a riser opening and closing adjusting system. The PLC system is used for controlling the opening degree of the flapper, changing the area of the raw gas inlet channel of the gas collecting pipe, and the remote monitoring system is installed in the central control room and used for collecting and storing the information of the monitored field equipment online. The remote IO system is used for collecting and transmitting the flapper cylinder information of the field and transmitting the executed control instructions. The riser opening and closing adjusting system is used for receiving the PLC system information to open and close the flapper valve of the riser bridge pipe, wherein the field equipment includes the flapper cylinder, the riser cover and the ammonia valve.

[0005] As improvement, the ascending pipe opening and closing adjusting system comprises a gas control box, an ammonia water cylinder, a pipe cover cylinder, a flap cylinder, a high and low pressure ammonia water switching valve, a pipe cover handle, and a flap valve handle; the internal components of the gas control box are installed on the ascending pipe platform in an integrated block manner through a bottom plate, the high and low pressure ammonia water switching valve is installed on one side of the bottom plate of the gas control box and connected with a high and low pressure ammonia water switching device, and is used for switching high and low pressure ammonia water; the ammonia water cylinder is connected with the ammonia water three-way ball valve in the high and low pressure ammonia water switching device through a piston rod one; the pipe cover cylinder is connected with the pipe cover handle through a piston rod two; and the flap cylinder is connected with the flap valve handle through a piston rod three.

[0006] As improvement, the bottom plate of the gas control box further comprises a pipe cover electromagnetic valve and a valve positioner; the valve positioner is used for determining the opening degree position of the valve; and the pipe cover electromagnetic valve is connected with the pipe cover cylinder.

[0007] As improvement, a high temperature travel switch in the opening / closing position is further included, one end of which is connected with the pipe cover cylinder and the other end of which is connected with the PLC system.

[0008] As improvement, the remote IO system comprises Profinet IO slave stations and a network switch, the Profinet IO slave stations are connected with the PLC system through the network switch to realize information interaction, and 6-10 groups are arranged.

[0009] As improvement, a field touch screen is further included; the field touch screen is a handheld and remote operation structure, two are arranged, and are independently installed on the coal tower and the end tower.

[0010] As improvement, a gas source filtering device is further included, wherein the gas source filtering device is connected with the gas control box and filters water vapor and oil vapor in compressed air; and an exhaust silencer is connected with the exhaust port of the gas control box and plays a role of adjusting exhaust flow and silencing.

[0011] Beneficial effects: the system disclosed by the utility model is through setting the cylinder, the valve positioner and other components on the mechanical water seal flap valve, uses the PLC system to control the opening degree of the flap, changes the size of the raw coal gas guide into the gas collecting pipe channel, controls through the mode, adjusts the raw coal gas export quantity and achieves the purpose of adjusting the pressure at the bottom of the carbonization chamber.

[0012] The system is according to the change rule of the raw coal gas flow according to the coking progress, automatically controls the opening degree of the water seal flap, reduces the leakage of the raw coal gas to the outside and the combustion chamber, and stabilizes the pressure of the gas collecting pipe. Meanwhile, the flap pressure regulating system can also cooperate with the coke oven charging and coke pushing operation, automatically opens and closes the flap, replaces the manual operation, and reduces the labor intensity. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the PLC control system and remote IO system network diagram of the utility model.

[0014] Figure 2 This is a schematic diagram of the automatic opening and closing system for the coke oven riser pipe of this utility model.

[0015] Figure 3 This is a schematic diagram of the structure of the pneumatic control box and its surrounding parts. Figure 1 .

[0016] Figure 4 This is a schematic diagram of the structure of the pneumatic control box and its surrounding parts. Figure 2 .

[0017] Figure 5 This is a schematic diagram of the structure of the pneumatic control box and its surrounding parts. Figure 3 .

[0018] Figure 6 This is a control diagram for the opening and closing of the riser cover, ignition, water seal flap action, and high and low pressure ammonia water switching in Embodiment 1 of this utility model.

[0019] In the diagram: 1. Pneumatic control box; 2. Flange; 3. Valve positioner; 4. Solenoid valve; 5. Exhaust silencer; 6. Base plate; 41. Ammonia solenoid valve; 42. Pipe cover solenoid valve; 7. Pipe cover cylinder; 8. Flip plate cylinder; 9. High and low pressure ammonia switching valve; 10. Inlet valve; 11. Gas source filter device. Detailed Implementation

[0020] The specific embodiments of this utility model will be described in further detail below with reference to the examples. These examples are used to illustrate this utility model, but are not intended to limit its scope.

[0021] The PLC system used in this invention is SIEMENS-S7-1500, the remote I / O system is SIMATIC ET200-MP, and the remote monitoring system is SIMATIC WINCC.

[0022] See Figure 1 As shown, this utility model discloses a coke oven riser pipe flap pressure regulation control system, specifically comprising a PLC system, a remote monitoring system, a remote I / O system, and a riser pipe opening and closing adjustment system. The PLC system controls the opening degree of the flap and changes the area of ​​the raw coal gas inlet gas collecting pipe channel within the entire flap pressure regulation control system. The remote monitoring system, installed in the central control room, collects and stores information from the monitoring field equipment online. The remote I / O system collects and transmits information from the flap cylinders at the field and transmits executed control commands. The riser pipe opening and closing adjustment system receives information from the PLC system to open and close the flap valve of the riser pipe bridge. The field equipment includes flap cylinders, riser pipe covers, and ammonia water valves.

[0023] The remote IO system comprises Profinet IO slave stations, a network switch, and the Profinet IO slave stations are connected with the PLC system through the network switch, and 6-10 groups are arranged.

[0024] See Figure 2 As shown in the figure, the riser opening and closing adjusting system comprises a gas control box 1, an ammonia water cylinder, a pipe cover cylinder 7, a flap cylinder 8, a high-low pressure ammonia water switching valve 9, a pipe cover handle, and a flap valve handle; the internal components of the gas control box 1 are installed on the riser platform in an integrated block manner through a bottom plate 6, the high-low pressure ammonia water switching valve 9 is installed on one side of the bottom plate 6 of the gas control box 1 and is connected with a high-low pressure ammonia water switching device, and is used for switching high-pressure ammonia water and low-pressure ammonia water; the ammonia water cylinder is connected with an ammonia water three-way ball valve in the high-low pressure ammonia water switching device through a piston rod one; the pipe cover cylinder 7 is connected with the pipe cover handle through a piston rod two; and the flap cylinder 8 is connected with the flap valve handle through a piston rod three.

[0025] The bottom plate 6 of the gas control box 1 further comprises an electromagnetic valve 4 and a valve positioner 3, wherein the electromagnetic valve 4 comprises an ammonia water electromagnetic valve 41 and a pipe cover electromagnetic valve 42, the ammonia water electromagnetic valve 41 is used for controlling ammonia water outlet control of the high-low pressure ammonia water switching device, the valve positioner 3 is used for determining the opening degree positioning of the valve, and the pipe cover electromagnetic valve 42 is connected with the pipe cover cylinder 7.

[0026] Meanwhile, a high-temperature stroke switch in the opening / closing position is further included, one end of the high-temperature stroke switch is connected with the pipe cover cylinder 7, and the other end of the high-temperature stroke switch is connected with a PLC system.

[0027] As a specific embodiment of the utility model, the utility model further comprises an air inlet valve 10, which is a ball valve and is used for opening and closing a gas path, one end of the air inlet valve 10 is connected with a compressed air main pipe, and the other end of the air inlet valve 10 is connected with an air source filtering device in a gas control cabinet.

[0028] Further, the utility model further comprises an air source filtering device 11, wherein the air source filtering device 11 is connected with the gas control box 1 and is used for filtering water vapor and oil gas in compressed air; and an exhaust silencer 5 is connected with an exhaust port of the gas control box 1 and is used for adjusting exhaust flow and silencing. Example 1

[0029] See Figure 6The remote IO system collects the opening feedback signal and the coal loading signal of the turning plate cylinder, calculates the time period of the current coking cycle according to the time of receiving the coal loading signal, sends the adjusting instruction to the PLC system when the turning plate opening adjusting time set by the system is reached, sends the signal to the pneumatic control box by the PLC system, controls the delivery of the gas to the turning plate cylinder by the electromagnetic valve of the pneumatic control box, connects the piston rod of the turning plate cylinder with the handle of the turning plate valve on the bridge pipe, controls the opening of the water seal turning plate of the bridge pipe by the extension and contraction of the piston rod of the cylinder, and ensures the accuracy of the opening positioning by the valve positioner.

[0030] In addition, the turning plate pressure regulating system can also cooperate with the coke oven coal loading and coke pushing operation to automatically open and close the turning plate, that is, the turning plate opening is 0% and 100% respectively.

[0031] The above-mentioned embodiments only express several implementation manners of the utility model, the description is more specific and detailed, but it cannot be understood as the limitation of the utility model patent scope. It should be pointed out that for the ordinary skilled in the art, several deformations and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent should be subject to the appended claims.

Claims

1. A coke oven uptake flap pressure regulating control system, characterized by: The PLC system, the remote monitoring system, the remote IO system and the rising pipe opening and closing adjusting system are included; the PLC system is used for controlling the opening size of the turning plate, changing the channel area size of the raw coal gas leading into the gas collecting pipe; the remote monitoring system is installed in the central control room and is used for collecting and storing the information of the monitored field equipment on line; the remote IO system is used for collecting and transmitting the information of the turning plate cylinder in the field, transmitting the executed control instructions; the rising pipe opening and closing adjusting system is used for receiving the PLC system information to open and close the turning plate valve of the rising pipe bridge pipe, wherein the field equipment includes the turning plate cylinder, the rising pipe cover, the ammonia water valve.

2. The control system for regulating the pressure of the flue gas in the flue duct of a coke oven according to claim 1, characterized in that: The rising pipe opening and closing adjusting system includes the pneumatic control box, the ammonia water cylinder, the pipe cover cylinder, the turning plate cylinder, the high and low pressure ammonia water switching valve, the pipe cover handle and the turning plate valve handle; the internal elements of the pneumatic control box are installed on the rising pipe platform in the form of integrated blocks through the bottom plate, the high and low pressure ammonia water switching valve is installed on one side of the bottom plate of the pneumatic control box and is connected with the high and low pressure ammonia water switching device and is used for switching the high and low pressure ammonia water; the ammonia water cylinder is connected with the ammonia water three-way ball valve in the high and low pressure ammonia water switching device through the piston rod one; the pipe cover cylinder is connected with the pipe cover handle through the piston rod two; the turning plate cylinder is connected with the turning plate valve handle through the piston rod three.

3. The control system for regulating the pressure in the flue gas upflow pipe of a coke oven according to claim 2, characterized in that: The bottom plate of the pneumatic control box further includes the pipe cover electromagnetic valve and the valve positioner; the valve positioner is used for determining the opening position of the valve; the pipe cover electromagnetic valve is connected with the pipe cover cylinder.

4. The control system for regulating the pressure of the flue gas in the flue duct of a coke oven according to claim 2, characterized in that: The high temperature stroke switch of the opening / closing position is further included, one end of which is connected with the pipe cover cylinder and the other end of which is connected with the PLC system.

5. The control system for regulating the pressure in the flue gas upflow pipe of a coke oven according to claim 1, characterized in that: The remote IO system includes the Profinet IO slave station and the network switch, the Profinet IO slave station is connected with the PLC system through the network switch to realize information interaction, and 6-10 groups are set.

6. The control system for regulating the pressure in the flue gas upflow pipe of a coke oven according to claim 1, characterized in that: The field touch screen is further included; the field touch screen is a handheld and remote operation structure, two are set, and are independently installed on the coal tower and the end tower.

7. The control system for regulating the pressure in the flue gas upflow pipe of a coke oven according to claim 1, characterized in that: The gas source filtering device is further included, wherein the gas source filtering device is connected with the pneumatic control box and filters the water vapor and oil vapor in the compressed air; the exhaust silencer is connected with the exhaust port of the pneumatic control box and plays a role of adjusting the exhaust flow and silencing.

Images