Method and device for controlling precision treatment separation tower separating tower resin separation auxiliary backwashing water incoming regulating valve

A technology for resin separation and water inlet adjustment, applied in the direction of flow control, non-electric variable control, control/regulation system, etc., can solve the problems of increased acid-base consumption, increased cost of consumable materials, increased power consumption, etc., to achieve cost savings, The effect of boosting the effect

Inactive Publication Date: 2018-05-18
DATANG XIANGTAN POWER GENERATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Datang Xiangtan Power Generation Co., Ltd. adopted the 300MW fine treatment separation auxiliary backwash inlet water regulating valve, which cannot meet the separation flow requirements for a long time during the anion and yang resin separation steps. When performing each set of mixed bed resin regeneration, Operators are required to manually adjust the flow parameters of the separation step in order to meet the maximum flow and minimum flow requirements of the separation as much as possible, and at the same time, it is also necessary to meet the flow rate drop trend requirements during the separation process
After each parameter adjustment, it cannot continue to be used in the next regeneration and separation process, but needs to be adjust...

Method used

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  • Method and device for controlling precision treatment separation tower separating tower resin separation auxiliary backwashing water incoming regulating valve
  • Method and device for controlling precision treatment separation tower separating tower resin separation auxiliary backwashing water incoming regulating valve
  • Method and device for controlling precision treatment separation tower separating tower resin separation auxiliary backwashing water incoming regulating valve

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Embodiment 1

[0044] figure 1 It shows a method for controlling the resin separation auxiliary backwash inlet water regulating valve of the fine treatment separation tower provided by Embodiment 1 of the present invention, including: Step S1: Obtain the real-time flow information of the separation tower backwash inlet water through the flow transmitter, and Send the real-time flow information to the PLC controller; Step S2: The PLC controller generates a regulating valve control instruction according to the preset period-by-time regulation rule and the real-time flow information, and sends the regulating valve control instruction to Regulating valve; Step S3: The regulating valve adjusts the water flow according to the received control command of the regulating valve; Step S4: Repeat steps S1 to S3 until the real-time flow information is equal to the preset minimum flow value, and keep The preset minimum flow rate is maintained until the end of the resin separation process. figure 2 The c...

Embodiment 2

[0050] image 3 It is a schematic structural diagram of a control device for a fine treatment separation tower resin separation auxiliary backwash water inlet regulating valve provided in Embodiment 2 of the present invention. The device includes: a real-time flow information acquisition module 100, which is used to obtain real-time flow information, and send the real-time flow information to the control module; the control module 200 is configured to generate a regulating valve control instruction according to the preset time-period regulation rule and the real-time flow information, and send the regulating valve control instruction For the adjustment module; the adjustment module 300 is configured to control the adjustment valve to adjust the inflow flow according to the received control instruction of the adjustment valve.

[0051] In general, the preset time-period adjustment rule is: at the beginning of each resin separation process, a control valve control command to adj...

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Abstract

The invention discloses a method and device for controlling a precision treatment separation tower separating tower resin separation auxiliary backwashing water incoming regulating valve. The method includes the following steps: S1, obtaining the real-time flow information of the backwashing incoming water of the separation tower and send the real-time flow information to a PLC; S2,causing the PLCto generate a regulating valve control instruction according to a preset time-dependent adjustment rule and the real-time flow information; S3, causing the regulating valve to adjust the flow of incoming water according to a received regulating valve control instruction; and S4, repeating the steps S1 to S3 until the end of the current resin separation process. The method acquires the incoming water flow information of the regenerated separation tower, sends the flow information to the PLC, introduces the flow information into the configuration logic, introduces time parameters into the resinseparation control, and performs adjustment and control according different requirements for the flows at different times, thereby realizing the closed loop control of the incoming water flow at different times, improving the accuracy of the automatic flow control and improving the separation effect of the resin.

Description

technical field [0001] The invention relates to the technical field of regulating valve control, in particular to a method and device for controlling a regulating valve for backwashing water inflow assisted by resin separation in a finishing separation tower. Background technique [0002] Datang Xiangtan Power Generation Co., Ltd. adopted the 300MW fine treatment separation auxiliary backwash inlet water regulating valve, which cannot meet the separation flow requirements for a long time during the anion and yang resin separation steps. When performing each set of mixed bed resin regeneration, Operators are required to manually adjust the flow parameters of the separation step in order to meet the maximum flow and minimum flow requirements of the separation as much as possible, and at the same time, it is also necessary to meet the trend of flow decline during the separation process. After each parameter adjustment, it cannot continue to be used in the next regeneration and ...

Claims

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Application Information

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IPC IPC(8): G05D7/06
CPCG05D7/0617
Inventor 彭博胡建余
Owner DATANG XIANGTAN POWER GENERATION
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