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A system and method for continuous position monitoring of a sootblower

A technology of monitoring system and soot blower, which is applied in the direction of combustion method, controlled combustion, electrical program control, etc., can solve the problems of damaged equipment, inability to monitor, hidden safety hazards, etc., achieve wide application prospects, reduce discovery time, and structural simple effect

Active Publication Date: 2022-08-02
国家能源(山东)工程技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] For the above-mentioned long sootblowers in the prior art, both front and rear travel switches are used to determine the position of the sootblower. Potential safety hazards and defects of damaged equipment, the present invention provides a continuous position monitoring system and method for sootblowers to solve the above technical problems

Method used

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  • A system and method for continuous position monitoring of a sootblower
  • A system and method for continuous position monitoring of a sootblower
  • A system and method for continuous position monitoring of a sootblower

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0088] like figure 1 and figure 2 As shown, the present invention provides a continuous position monitoring system for a sootblower, including a reed switch position sensor 6, a local control junction box 11, an interface module 9 and a DCS configuration module 10;

[0089] The sootblower adopts a long telescopic sootblower, including a sootblower gun and a sports car; the sports car includes a motor and a gear box 1;

[0090] The soot blowing gun includes a nozzle 2, and a nozzle 3 is arranged on the nozzle 2; the nozzle 2 runs through the gear box 1, and the motor drives the nozzle 2 to move forward or backward;

[0091] The gear box 1 is provided with a retracting position limit switch 4 and an advancing position limit switch 5. The retracting position limit switch 4 is used to detect whether the print head 2 has reached the maximum backward position, and the advance position limit switch 5 is used to detect whether the print head 2 has reached the maximum forward positio...

Embodiment 2

[0104] like image 3 As shown, what is different from Embodiment 1 is that the data processing module 8 includes a current loop chip U1, and the current loop chip U1 includes a calibration voltage terminal Vreg, a reference voltage terminal Vref, an input terminal In, a current return terminal IRET, a voltage terminal V+, a base pole connection terminal B, emitter connection terminal E and current output terminal Io;

[0105] The calibration voltage terminal Vreg is connected to the first capacitor C1 and the power supply terminal VCC, and the other end of the first capacitor C1 is grounded;

[0106] The reference voltage terminal Vreg is connected with a first sliding resistor W1;

[0107] The input terminal In is connected with the first resistor R1, and is also connected with the other end of the first sliding resistor W1; the other end of the first resistor R1 is connected with the second resistor R2 and the second sliding resistor W2, and the other end of the second resi...

Embodiment 3

[0116] like Figure 4 As shown, in the above-mentioned embodiment 1, the number of the soot blowers is sixteen, and the number of the reed switch position sensor 6 and the data processing module 8 is equal to the number of soot blowers, which are sixteen;

[0117] The DCS card of the interface module 9 is connected with the sixteen data processing modules, and the sixteen data processing modules 8 are respectively connected with the corresponding reed switch position sensors 6;

[0118] The interface module 9 includes a gating unit 9.1, an analog-to-digital conversion unit 9.2, an optoelectronic isolation unit 9.3 and a control unit 9.4;

[0119] The gating unit 9.1 is connected to the analog-to-digital conversion unit 9.2, the analog-to-digital conversion unit 9.2 is connected to the photoelectric isolation unit 9.3, and the photoelectric isolation unit 9.3 is connected to the control unit 9.4;

[0120] The control unit 9.4 is connected with the DCS configuration module 10; ...

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Abstract

The invention provides a continuous position monitoring system and method for a sootblower. The system includes a reed switch position sensor, a local control junction box, an interface module and a DCS configuration module; the sootblower adopts a long telescopic type sootblower. The soot blower includes a soot blower and a sports car; the sports car includes a motor and a gear box; the soot blower includes a nozzle, and the nozzle is provided with a nozzle; the nozzle runs through the gear box, and the motor drives the nozzle to move forward or backward; the gear box is provided with a retraction limit switch and The advance position limit switch, the retreat position limit switch is used to detect whether the nozzle reaches the maximum position of retreat, and the advance position limit switch is used to detect whether the nozzle reaches the maximum forward position; the reed switch position sensor is set at the nozzle head of the soot blower; A power supply module and a data processing module are arranged in the control junction box; the reed switch position sensor is connected with the power supply module and the data processing module, the data processing module is connected with the interface module, and the interface module is connected with the DCS configuration module.

Description

technical field [0001] The invention belongs to the technical field of position measurement of steam sootblowers in coal-fired power plants, and in particular relates to a continuous position monitoring system and method for sootblowers. Background technique [0002] In the long-term operation of the boiler of a coal-fired power plant, ash accumulation and coking will occur on the heating surface, which will worsen the heat transfer. For the tail flue, due to the long-term accumulation of combustibles, there will also be a vicious re-burning accident. Therefore, the boiler runs for a period of time. After that, it is necessary to carry out soot blowing work on the heating surface to clean the heating surface. Especially the soot blowers at the flue positions such as superheaters are more than 10 meters long, and due to the high pressure of coal burning in recent years, the coal burning indicators of major power plants have declined, resulting in frequent soot blowers and hig...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/418F23J3/00F23M11/00F23N5/24
CPCF23J3/00F23M11/00F23N5/242
Inventor 王庆想刘卫东赵建新李军韩怀月宋益纯何刚赵培山
Owner 国家能源(山东)工程技术有限公司