Automatic putting method of temperature and pressure reducer

A desuperheater and pressure reducer, automatic input technology, applied in the control of machine/engine, engine components, superheat temperature, etc., can solve the problem that the desuperheater and pressure reducer cannot be put into use in time, so as to avoid boiler accidents and save energy time, ensuring the effect of continuous heating

Pending Publication Date: 2021-04-06
宜昌华直能源开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the deficiencies in the prior art, the present invention provides an automatic input method for the temperature and pressure reducer, which solves the technical problem in the prior art that the temperature and pressure reducer cannot be activated in time after the back pressure steam turbine unit trips

Method used

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  • Automatic putting method of temperature and pressure reducer
  • Automatic putting method of temperature and pressure reducer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A method for automatically putting in a desuperheater and pressure reducer, comprising the following steps:

[0028] S1. Interlock the trip signal of the back pressure steam turbine unit with the input signal of the temperature reducer;

[0029] S2. Put the temperature and pressure reducer in a hot standby state;

[0030] S3. Take the current value of the back pressure steam turbine unit and compare it with the preset value 0.8;

[0031] S4. If the current value of the back pressure steam turbine unit is less than or equal to the preset value 0.8, the steam inlet isolation electric door of the desuperheater and pressure reducer is opened; if the current value of the back pressure steam turbine unit is greater than the preset value 0.8, the temperature and pressure reduction The steam inlet of the appliance is isolated and the electric door is closed.

[0032] Step S3 includes the following steps:

[0033] S31. Take the remote pressure value of the safety oil pipeline...

Embodiment 2

[0047] Step S3. Take the remote pressure value of the safety oil pipeline of the back pressure steam turbine unit, the established value of the safety oil pressure of the back pressure steam turbine unit and compare it with the preset value 1. When the remote pressure value of the safety oil pipeline of the back pressure steam turbine unit and the safety oil pressure establishment value of the back pressure steam turbine unit are both less than or equal to the preset value 1, the steam inlet isolation electric door of the desuperheater and pressure reducer is opened; when the back pressure steam turbine unit When the remote pressure value of the safety oil pipeline and the established value of the safety oil pressure of the back pressure steam turbine unit are both greater than the preset value 1, the steam inlet of the desuperheater is isolated and the electric door is closed.

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Abstract

The invention provides an automatic putting method of a temperature and pressure reducer. The method comprises the following steps: S1, interlocking a trip signal of a back pressure turboset and an input signal of the temperature and pressure reducer; S2, placing the temperature and pressure reducer in a hot standby state; S3, comparing a current value of the back pressure turboset with a preset value; and S4, opening an isolating electric door at a steam inlet of the temperature and pressure reducer when the current value of the back pressure turboset is smaller than or equal to the preset value, and closing the isolating electric door at the steam inlet of the temperature and pressure reducer when the current value of the back pressure turboset is greater than the preset value. The method solves the technical problem that the temperature and pressure reducer cannot be input in time after strip of the temperature and pressure reducer in the prior art.

Description

technical field [0001] The invention relates to the technical field of interlocking protection, in particular to an automatic input method for a temperature and pressure reducer. Background technique [0002] If the desuperheater and pressure reducer cannot be put into operation in time after the back pressure steam turbine unit trips, it will lead to the following two situations, first: the steam is interrupted, and the heat supply cannot be continued; second: the boiler steam pressure is over-pressurized and causes an accident. The trip of the back pressure steam turbine unit is often an emergency. It is necessary to open the desuperheater in time to prevent overpressure and ensure the normal operation of the subsequent sections. Especially at night, if the mental state of the personnel is not good, accidents will occur if they are not dealt with in time. At present, most of the opening methods of the desuperheater and pressure reducer are still manual operation, which has...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01D21/00F22G5/12F22G5/20
CPCF01D21/00F22G5/12F22G5/20
Inventor 谭秭阳宋孝全田华余正斌张光权杜官怀向俊波游毕尚
Owner 宜昌华直能源开发有限公司
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