CN-117073396-B - Steam pressure regulating system, method, device, medium and electronic equipment

CN117073396BCN 117073396 BCN117073396 BCN 117073396BCN-117073396-B

Abstract

The application relates to the technical field of metallurgical refining processes, and discloses a steam pressure regulating system, a steam pressure regulating method, a steam pressure regulating device, a steam pressure regulating medium and electronic equipment. The system comprises a first regulating valve, a second regulating valve, a front sensor, a rear sensor and a control mechanism, wherein the first regulating valve and the second regulating valve are arranged in parallel on a steam transmission pipeline, the front sensor is arranged on the steam transmission pipeline and used for detecting the steam pressure before entering the first regulating valve and the second regulating valve, the rear sensor is arranged on the steam transmission pipeline and used for detecting the steam pressure coming out of the first regulating valve and the second regulating valve, an input signal end of the control mechanism is respectively connected with the front sensor and the rear sensor, and an output signal end of the control mechanism is respectively connected with the first regulating valve and the second regulating valve. The application can maintain the stability of the steam pressure input to the steam jet pump of the RH furnace, so that the vacuum effect of the RH furnace is maintained stable, and the quality of molten steel in the RH furnace is improved.

Inventors

ZHANG WENBO
FU XULI
WANG DONGLIANG
WEN GUANJUN
HU LIN
QIN JIAXING
LI JIANJUN
ZHANG XIAOHUI

Assignees

北京首钢股份有限公司

Dates

Publication Date: 20260508
Application Date: 20230328

Claims (5)

1. A steam pressure regulating method is characterized by being applied to a steam pressure regulating system, wherein the system comprises a first regulating valve; The first regulating valve and the second regulating valve are arranged in parallel on the steam transmission pipeline; a front sensor, which is arranged on the steam transmission pipeline and is used for detecting the steam pressure before entering the first regulating valve and the second regulating valve; the rear sensor is arranged on the steam transmission pipeline and is used for detecting the steam pressure coming out of the first regulating valve and the second regulating valve; The control mechanism input signal end is respectively connected with the front sensor and the rear sensor, the control mechanism output signal end is respectively connected with the first regulating valve and the second regulating valve, and the local display screen is used for displaying the numerical values of the front sensor, the rear sensor, the first regulating valve and the second regulating valve and locally monitoring the first regulating valve and the second regulating valve; The upper computer monitoring mechanism is used for displaying the numerical values of the front sensor, the rear sensor, the first regulating valve and the second regulating valve and is used for remotely monitoring the first regulating valve and the second regulating valve; The control mechanism, the local display screen and the upper computer monitoring mechanism are connected through an industrial Ethernet, the control mechanism comprises a PID controller, and the method comprises the following steps: acquiring a front steam pressure before adjustment and a rear steam pressure after adjustment; the difference between the calculated steam pressure and the preset pressure is stored as a trigger value; Inputting the trigger value to a control mechanism, and outputting an adjusting instruction to a first adjusting valve and a second adjusting valve after the control mechanism calculates if the trigger value is not equal to zero, wherein the first adjusting valve and the second adjusting valve are arranged in parallel in a steam transmission pipeline; Respectively adjusting the opening degrees of the first regulating valve and the second regulating valve according to the regulating instruction; Inputting the trigger value into a control mechanism, and if the trigger value is equal to zero, the control mechanism has no output signal, and the first regulating valve and the second regulating valve maintain the opening at the moment; The trigger value is input to the control mechanism, and if the trigger value is not equal to zero, the control mechanism outputs an adjusting instruction to the first adjusting valve and the second adjusting valve after calculation, and the method comprises the following steps: Setting the preset pressure to be 10Bar; when the front steam pressure is less than or equal to 18Bar and less than or equal to 22Bar, selecting the first regulating valve as a working valve, outputting a regulating instruction to the first regulating valve by the control mechanism, regulating the opening degree by the first regulating valve according to the regulating instruction, outputting a closing instruction to the second regulating valve by the control mechanism, and regulating the opening degree to zero by the second regulating valve according to the closing instruction; When the front steam pressure is less than or equal to 12Bar and is less than or equal to 18Bar, selecting a first regulating valve and a second regulating valve as working valves, respectively transmitting regulating instructions of a control mechanism to the first regulating valve and the second regulating valve, and respectively regulating the opening of the first regulating valve and the second regulating valve according to the regulating instructions; When the front steam pressure is 12Bar or the front steam pressure is 22Bar, the control mechanism outputs a closing instruction to be transmitted to the first regulating valve and the second regulating valve respectively, the opening of the first regulating valve and the opening of the second regulating valve are adjusted to be zero according to the closing instruction, and the control mechanism outputs an alarm.
2. The method according to claim 1, wherein when the front steam pressure is less than or equal to 12Bar and is less than 18Bar, the first regulating valve and the second regulating valve are selected as working valves, control mechanism regulating instructions are respectively transmitted to the first regulating valve and the second regulating valve, and the first regulating valve and the second regulating valve respectively regulate opening degrees according to the regulating instructions, the method comprises: the control mechanism outputs an adjusting instruction; The regulating command is processed according to the following formula and then outputs a first control command and a second control command to the first regulating valve and the second regulating valve respectively: , Wherein, the To control Is used for the signal section of the (a), The value of the water-based paint is 50, To control The signal section is provided with a plurality of signal channels, The value of the water-based paint is 30, In the case of a first control instruction, Is a second control instruction; and respectively adjusting the opening degrees of the first regulating valve and the second regulating valve according to the first control command and the second control command.
3. The method according to claim 2, wherein the adjusting instruction is processed according to the following formula, and then a first control instruction and a second control instruction are output to the first adjusting valve and the second adjusting valve respectively, when the first control instruction and the second control instruction are smaller than 1, the opening of the corresponding adjusting valve is adjusted to be zero, when the first control instruction and the second control instruction are larger than 1 and smaller than 2, the opening of the corresponding adjusting valve is adjusted according to the adjusting instruction, and when the first control instruction and the second control instruction are equal to 2, the opening of the corresponding adjusting valve is adjusted to be full-open.
4. A computer readable storage medium having stored therein at least one program code loaded and executed by a processor to implement operations performed by a method as recited in any one of claims 1 to 2.
5. An electronic device comprising one or more processors and one or more memories, the one or more memories collectively storing at least one piece of program code that is loaded and executed by the one or more processors to implement the operations performed by the method of any of claims 1-2.

Description

Steam pressure regulating system, method, device, medium and electronic equipment Technical Field The application relates to the technical field of metallurgical refining processes, in particular to a steam pressure regulating system, a steam pressure regulating method, a steam pressure regulating device, a steam pressure regulating medium and electronic equipment. Background The RH furnace in the metallurgical refining process carries out vacuum treatment on molten steel in a mode of vacuumizing by a steam jet pump, so that harmful gas in the molten steel can be effectively reduced, and the quality of the molten steel can be effectively improved. The RH furnace steam jet pump needs steam with constant pressure to ensure the working efficiency of the steam jet pump. Disclosure of Invention The application aims to provide a steam pressure regulating system, a steam pressure regulating method, a steam pressure regulating device, a medium and electronic equipment. Other features and advantages of the application will be apparent from the following detailed description, or may be learned by the practice of the application. According to one aspect of the embodiment of the application, a steam pressure regulating system is provided, which comprises a first regulating valve, a second regulating valve, a front sensor, a rear sensor and a control mechanism, wherein the first regulating valve and the second regulating valve are arranged in parallel on a steam transmission pipeline, the front sensor is arranged on the steam transmission pipeline and used for detecting the steam pressure before entering the first regulating valve and the second regulating valve, the rear sensor is arranged on the steam transmission pipeline and used for detecting the steam pressure coming out of the first regulating valve and the second regulating valve, an input signal end of the control mechanism is respectively connected with the front sensor and the rear sensor, and an output signal end of the control mechanism is respectively connected with the first regulating valve and the second regulating valve. In one embodiment of the application, based on the foregoing scheme, the system further comprises a local display screen, an upper computer monitoring mechanism, a control unit and a control unit, wherein the local display screen is used for displaying the numerical values of the front sensor, the rear sensor, the first regulating valve and the second regulating valve and locally monitoring the first regulating valve and the second regulating valve; The control mechanism, the local display screen and the upper computer monitoring mechanism are connected through an industrial Ethernet. In one embodiment of the application, the control mechanism comprises a PID controller based on the foregoing. According to one aspect of the embodiment of the application, a steam pressure adjusting method is provided, and the method comprises the steps of obtaining a front steam pressure before adjustment and a rear steam pressure after adjustment, calculating a difference value between the rear steam pressure and a preset pressure and storing the difference value as a trigger value, inputting the trigger value into a control mechanism, outputting an adjusting instruction to a first adjusting valve and a second adjusting valve after calculation by the control mechanism if the trigger value is not equal to zero, wherein the first adjusting valve and the second adjusting valve are arranged in parallel in a steam transmission pipeline, adjusting the opening of the first adjusting valve and the opening of the second adjusting valve respectively according to the adjusting instruction, inputting the trigger value into the control mechanism, and if the trigger value is equal to zero, the control mechanism does not output signals, and the first adjusting valve and the second adjusting valve maintain the opening at the moment. According to the scheme, the method comprises the steps of setting the preset pressure to be 10Bar, selecting a first regulating valve as a working valve when the front steam pressure is less than or equal to 18Bar and less than or equal to 22Bar, outputting a regulating instruction to the first regulating valve by a control mechanism, regulating the opening degree of the first regulating valve according to the regulating instruction, outputting a closing instruction to a second regulating valve by the control mechanism, regulating the opening degree to zero according to the closing instruction, selecting the first regulating valve and the second regulating valve as working valves when the front steam pressure is less than or equal to 12Bar and less than or equal to 18Bar, respectively transmitting regulating instructions to the first regulating valve and the second regulating valve, regulating the opening degree by the control mechanism according to the regulating instruction, respectively, and outputting a closing instruction to the firs