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CN-121993385-A - Method and device for program-controlled starting of steam compressor driven by small steam turbine

CN121993385ACN 121993385 ACN121993385 ACN 121993385ACN-121993385-A

Abstract

The invention provides a method and a device for program-controlled starting of a steam compressor driven by a small steam turbine, and relates to the technical field of automatic control. The system comprises a starting module, a starting module and a starting module, wherein the starting module is used for controlling from a static state to completion of turning starting, the completion of turning starting comprises that a turning motor is operated, a vacuum pump of a steam turbine system is operated and a system warm-up time timing logic algorithm is operated. And the rated rotation speed module is used for controlling the system rotation speed to be increased to the rated rotation speed from the jigger state, wherein the system rotation speed is increased to the rated rotation speed, and the jigger motor stops, and the turbine speed increasing curve control logic is operated and controls the turbine to be increased to the rated rotation speed. The invention utilizes a Distributed Control System (DCS) widely applied in the industrial control field to realize the program start control process from a static state to auxiliary equipment start and turning start of a small steam turbine-steam compressor system until the system is accelerated to a rated rotation speed.

Inventors

  • YU MINGSHUANG
  • ZHANG ZHONGZHENG
  • XU XIAOFANG
  • Wan Chubin

Assignees

  • 山东中实易通集团有限公司

Dates

Publication Date
20260508
Application Date
20260130

Claims (10)

  1. 1. The control method for the program-controlled start of the small turbine-driven steam compressor is characterized by being applied to a control system for the program-controlled start of the small turbine-driven steam compressor, and the control system for the program-controlled start of the small turbine-driven steam compressor comprises a starting module and a rated rotating speed module and is characterized by comprising the following steps: The starting module is used for controlling from a static state to completion of turning starting and comprises a starting permission 1 unit, a starting permission 2 unit, a starting permission 3 unit, a starting permission 4 unit and a starting permission 5 unit, wherein the starting permission 1 unit comprises a step sequence 1 instruction and a step sequence 1 instruction output, the starting permission 2 unit comprises a step sequence 2 instruction and a step sequence 2 instruction output, the starting permission 3 unit comprises a step sequence 3 instruction and a step sequence 3 instruction output, the starting permission 4 unit comprises a step sequence 4 instruction and a step sequence 4 instruction output, the starting permission 5 unit comprises a step sequence 5 instruction and a step sequence 5 instruction output, the step sequence 3 instruction output comprises a turning motor operated feedback signal, the step sequence 4 instruction output comprises a turbine system vacuum pump operated feedback signal, and the step sequence 5 instruction output comprises a system warm-up time timing logic algorithm operated feedback signal; The system comprises a rated rotation speed module, a system rotation speed control module and a system rotation speed control module, wherein the rated rotation speed module is used for controlling the rotation speed of a jigger from a jigger state to the rated rotation speed and comprises a start permission 6 unit, a start permission 7 unit, a start permission 8 unit and a start permission 9 unit, the start permission 6 unit comprises a step 6 instruction and a step 6 instruction output, the start permission 7 unit comprises a step 7 instruction and a step 8 instruction output, the start permission 9 unit comprises a step 9 instruction and a step 9 instruction output, the step 7 instruction output comprises jigger motor stop state feedback, the step 8 instruction output comprises a turbine speed increasing curve control logic operated feedback signal, and the step 9 instruction output comprises a turbine speed increasing feedback signal.
  2. 2. The method for controlling the programmed start-up of a small turbine driven vapor compressor according to claim 1, wherein said start-up enabling 1 unit comprises: checking operation conditions of the auxiliary equipment cooling water system to obtain signals meeting the operation conditions of the auxiliary equipment cooling water system; Checking the operation condition of the lubricating oil system of the auxiliary equipment to obtain a signal meeting the operation condition of the lubricating oil system of the auxiliary equipment; performing manual confirmation to obtain a manual confirmation signal 1; Based on the auxiliary equipment cooling water system operation condition meeting signal, the auxiliary equipment lubricating oil system operation condition meeting signal and the manual confirmation signal 1, activating a step 1 instruction and obtaining output of the step 1 instruction, wherein the step 1 instruction comprises starting a lubricating oil tank smoke exhaust fan, starting a public circulating cooling water pump and starting a condensate pump, and the output of the step 1 instruction comprises a lubricating oil tank smoke exhaust fan operated feedback signal, a circulating cooling water pump operated feedback signal and a condensate pump operated feedback signal.
  3. 3. The method for controlling the programmed start-up of a small turbine driven vapor compressor according to claim 1, wherein said start-up enabling 2 units comprises: checking the operation condition of the small turbine gland sealing system to obtain a signal that the operation condition of the small turbine gland sealing system meets; Checking the operation condition of the steam supply system of the steam seal of the steam turbine to obtain a signal of meeting the operation condition of the steam supply system of the steam seal of the steam turbine; performing manual confirmation to obtain a manual confirmation signal 2; Activating a step 2 instruction and obtaining the output of the step 2 instruction based on the output of the step 1 instruction, a small turbine gland sealing system operation condition meeting signal, a steam supply system operation condition meeting signal of a pressure turbine gland sealing, and a manual confirmation signal 2, wherein the step 2 instruction comprises starting a lubricating oil pump, and the output of the step 2 instruction comprises a feedback signal that the lubricating oil pump has operated; based on the output of the step sequence 2 instruction, activating the step sequence 3 instruction and obtaining the output of the step sequence 3 instruction, wherein the step sequence 3 instruction comprises starting the jigger motor, and the output of the step sequence 3 instruction comprises a jigger motor operated feedback signal.
  4. 4. The method for controlling programmed start-up of a small turbine driven vapor compressor according to claim 1, wherein the start-up enabling 4 units comprises: starting the shaft seal steam supply electric valve to obtain a feedback signal that the shaft seal steam supply electric valve operates; Starting a shaft seal cooler fan to obtain a feedback signal that the shaft seal cooler fan has operated; Based on the output of the step sequence 3 instruction, the feedback signal that the shaft seal steam supply electric valve is operated and the feedback signal that the shaft seal cooler fan is operated, the step sequence 4 instruction is activated and the output of the step sequence 4 instruction is obtained, wherein the step sequence 4 instruction comprises starting the vacuum pump of the steam turbine system, and the output of the step sequence 4 instruction comprises the feedback signal that the vacuum pump of the steam turbine system is operated.
  5. 5. The method for controlling programmed start-up of a small turbine driven vapor compressor according to claim 1, wherein said start-up enabling 5 units comprises: checking the operation condition of the small turbine system drainage system to obtain that the operation condition of the small turbine system drainage system meets the feedback signal; Checking operation conditions of respective drainage systems of the steam turbine system to obtain feedback signals satisfied by the operation conditions of the respective drainage systems of the steam turbine system; performing manual confirmation to obtain a manual confirmation signal 3; Based on the output of the step sequence 4 instruction, the operation condition of the small steam turbine system hydrophobic system meets the feedback signal, the manual confirmation signal 3, the step sequence 5 instruction is activated, the output of the step sequence 5 instruction is obtained, the step sequence 5 instruction comprises a system warm-up time timing logic algorithm, and the output of the step sequence 5 instruction comprises a feedback signal that the system warm-up time timing logic algorithm has operated.
  6. 6. The method for controlling programmed start-up of a small turbine driven vapor compressor according to claim 1, wherein said start-up enabling 6 units comprises: Checking and starting system warm-up time timing to obtain a feedback signal meeting the requirement of the system warm-up time timing; Checking the pressure of the lubricating oil to obtain a feedback signal that the pressure of the lubricating oil meets the requirement; checking the temperature of the lubricating oil to obtain a feedback signal that the temperature of the lubricating oil meets the requirement; Checking the cooling water system to obtain a feedback signal that the cooling water system meets the requirement; checking the shaft seal pressure to obtain a feedback signal that the shaft seal pressure meets the requirement; checking the shaft seal temperature to obtain a feedback signal that the shaft seal temperature meets the requirement; checking the vacuum of the steam turbine to obtain a feedback signal that the vacuum of the steam turbine meets the requirement; Activating a step 6 instruction and obtaining an output of the step 6 instruction based on the output of the step 5 instruction, the system warmup time timing meeting requirement feedback signal, the lubricating oil pressure meeting requirement feedback signal, the lubricating oil temperature meeting requirement feedback signal, the cooling water system meeting requirement feedback signal, the shaft seal pressure meeting requirement feedback signal, the shaft seal temperature meeting requirement feedback signal and the steam turbine vacuum meeting requirement feedback signal, wherein the step 6 instruction comprises a main steam valve opening feedback signal and a steam turbine setting valve opening feedback signal of a steam turbine, and the output of the step 6 instruction comprises the main steam valve opening feedback signal and the steam turbine setting valve opening feedback signal of the steam turbine; checking the rotation speed of the steam turbine, obtaining that the rotating speed of the steam turbine is higher than that of the steam turbine selecting a set point feedback signal; Activating a step 7 instruction and obtaining the output of the step 7 instruction based on the output of the step 6 instruction and a feedback signal that the rotating speed of the steam turbine is higher than a selected set value, wherein the step 7 instruction comprises stopping the operation of the jigger motor, and the output of the step 7 instruction comprises the feedback of the stopping state of the jigger motor; Based on the output of the step 7 instruction, activating the step 8 instruction and obtaining the output of the step 8 instruction, wherein the step 8 instruction comprises activating the turbine speed increase curve control logic, and the output of the step 8 instruction comprises a feedback signal that the turbine speed increase curve control logic has operated.
  7. 7. The method for controlling the programmed start-up of a small turbine driven vapor compressor according to claim 1, wherein said start-up enabling 9 unit comprises: checking the system warmup timing to obtain a feedback signal that the system warmup timing is finished; The steam turbine is inspected and, obtaining the speed of the steam turbine to be increased a medium speed warm-up value feedback signal; checking the medium-speed warm-up time to obtain a feedback signal that the medium-speed warm-up time meets the requirement; performing manual confirmation to obtain a manual confirmation signal 4; Based on the output of the step sequence 8 instruction, the feedback signal that the system warmup timing is finished, the feedback signal that the steam turbine is accelerated to the medium speed warmup value, the feedback signal that the medium speed warmup time meets the requirement, the manual confirmation signal 4, the step sequence 9 instruction is activated and the output of the step sequence 9 instruction is obtained, the step sequence 9 instruction comprises controlling the steam turbine to be accelerated to the rated rotation speed, and the output of the step sequence 9 instruction comprises controlling the steam turbine to be accelerated to the rated rotation speed feedback signal.
  8. 8. A control device for programmed start of a small turbine-driven vapor compressor for implementing a control method for programmed start of a small turbine-driven vapor compressor according to any one of claims 1 to 7, characterized in that the device comprises: The starting module is used for controlling from a static state to completion of turning starting and comprises a starting permission 1 unit, a starting permission 2 unit, a starting permission 3 unit, a starting permission 4 unit and a starting permission 5 unit, wherein the starting permission 1 unit comprises a step sequence 1 instruction and a step sequence 1 instruction output, the starting permission 2 unit comprises a step sequence 2 instruction and a step sequence 2 instruction output, the starting permission 3 unit comprises a step sequence 3 instruction and a step sequence 3 instruction output, the starting permission 4 unit comprises a step sequence 4 instruction and a step sequence 4 instruction output, the starting permission 5 unit comprises a step sequence 5 instruction and a step sequence 5 instruction output, the step sequence 3 instruction output comprises a turning motor operated feedback signal, the step sequence 4 instruction output comprises a steam turbine system vacuum pump operated feedback signal, and the step sequence 5 instruction output comprises a system warm-up time timing logic algorithm operated feedback signal; The system comprises a rated rotation speed module, a system rotation speed control module and a system rotation speed control module, wherein the rated rotation speed module is used for controlling the rotation speed of the system from a jigger state to be increased to a rated rotation speed and comprises a start permission 6 unit, a start permission 7 unit, a start permission 8 unit and a start permission 9 unit, the start permission 6 unit comprises a step 6 instruction and a step 6 instruction output, the start permission 7 unit comprises a step 7 instruction and a step 8 instruction output, the start permission 9 unit comprises a step 9 instruction and a step 9 instruction output, the step 7 instruction output comprises jigger motor stop state feedback, the step 8 instruction output comprises a turbine speed increasing curve control logic operated feedback signal, and the step 9 instruction output comprises a turbine speed increasing feedback signal.
  9. 9. A control device for programmed start of a small turbine-driven steam compressor, characterized by a control processor for programmed start of the small turbine-driven steam compressor, a memory having stored thereon computer readable instructions which, when executed by the processor, implement the method according to any one of claims 1 to 7.
  10. 10. A computer readable storage medium, characterized in that the computer readable storage medium has stored therein a program code, which is callable by a processor for executing the method according to any one of claims 1 to 7.

Description

Method and device for program-controlled starting of steam compressor driven by small steam turbine Technical Field The invention relates to the technical field of automatic control, in particular to a method and a device for program-controlled starting of a steam compressor driven by a small steam turbine. Background The method adopts a small steam turbine as a power device to drive a centrifugal or other gas compressor, the low-grade (low pressure and low temperature) steam is compressed into high-grade (high pressure and high temperature) steam, the control strategy is gradually applied in industrial production, the control strategy needs to wait for operators to realize normal starting steps through inspection, check, confirmation and the like, the starting flow of the whole system is long in time consumption and large in manpower resource consumption, the control method integrates the starting flow of the small steam turbine and the starting flow of the steam compressor, and the program starting control of the whole system is realized by utilizing a DCS control system widely applied in the industrial control field to integrate various execution and feedback signals. The Distributed Control System (DCS) is widely applied to the field of industrial control, a control process is realized by constructing control logic in application software of the DCS, and signal receiving and outputting are realized by DCS related hardware configuration. In one aspect, a control method for program-controlled starting of a small turbine driven steam compressor is provided, and the method is realized by control equipment for program-controlled starting of the small turbine driven steam compressor, and comprises a starting module and a rated rotating speed module, and is characterized by comprising the following steps: The starting module is used for controlling from a static state to completion of turning starting and comprises a starting permission 1 unit, a starting permission 2 unit, a starting permission 3 unit, a starting permission 4 unit and a starting permission 5 unit, wherein the starting permission 1 unit comprises a step sequence 1 instruction and a step sequence 1 instruction output, the starting permission 2 unit comprises a step sequence 2 instruction and a step sequence 2 instruction output, the starting permission 3 unit comprises a step sequence 3 instruction and a step sequence 3 instruction output, the starting permission 4 unit comprises a step sequence 4 instruction and a step sequence 4 instruction output, the starting permission 5 unit comprises a step sequence 5 instruction and a step sequence 5 instruction output, the step sequence 3 instruction output comprises a turning motor operated feedback signal, the step sequence 4 instruction output comprises a turbine system vacuum pump operated feedback signal, and the step sequence 5 instruction output comprises a system warm-up time timing logic algorithm operated feedback signal; The system comprises a rated rotation speed module, a system rotation speed control module and a system rotation speed control module, wherein the rated rotation speed module is used for controlling the rotation speed of a jigger from a jigger state to the rated rotation speed and comprises a start permission 6 unit, a start permission 7 unit, a start permission 8 unit and a start permission 9 unit, the start permission 6 unit comprises a step 6 instruction and a step 6 instruction output, the start permission 7 unit comprises a step 7 instruction and a step 8 instruction output, the start permission 9 unit comprises a step 9 instruction and a step 9 instruction output, the step 7 instruction output comprises jigger motor stop state feedback, the step 8 instruction output comprises a turbine speed increasing curve control logic operated feedback signal, and the step 9 instruction output comprises a turbine speed increasing feedback signal. Preferably, the starting module of the S1 is used for controlling from a static state to completion of turning starting and comprises a starting permission 1 unit, a starting permission 2 unit, a starting permission 3 unit, a starting permission 4 unit and a starting permission 5 unit, wherein the starting permission 1 unit comprises a step 1 instruction and a step 1 instruction output, the starting permission 2 unit comprises a step 2 instruction and a step 2 instruction output, the starting permission 3 unit comprises a step 3 instruction and a step 3 instruction output, the starting permission 4 unit comprises a step 4 instruction and a step 4 instruction output, the starting permission 5 unit comprises a step 5 instruction and a step 5 instruction output, the step 3 instruction output comprises a turning motor operated feedback signal, the step 4 instruction output comprises a turbine system vacuum pump operated feedback signal, the step 5 instruction output comprises a system warmup time timing logic algorithm operated feedback signal