Automatic regulating and controlling method of wet steam boiler dryness

A technology of regulating control and wet steam, which is applied in the direction of steam generation, control system, lighting and heating equipment, etc., to achieve the effect of overcoming reliability and stable and reliable control results

Inactive Publication Date: 2003-09-17
李金叶
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] This paper proposes a wet steam boiler dryness automatic adjustment control method, which effectively solves the problem of wet steam dryness automatic adjustment control in the production process of wet steam boilers

Method used

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  • Automatic regulating and controlling method of wet steam boiler dryness
  • Automatic regulating and controlling method of wet steam boiler dryness

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Embodiment Construction

[0039] Step 1 Obtain the function f of the enthalpy per unit mass of saturated water and the enthalpy per unit mass of saturated steam with respect to pressure by looking up the table or other methods 1 (P) and f 2 (P), and the enthalpy per unit mass of water as a function of temperature f 3 (T). Then, according to needs, convert them into self-defined standard functions that can be accepted by the control system corresponding to the original functions one by one.

[0040] Step 2 According to the method provided in this paper or formula (1) andfigure 1 Draw the flow chart of the control system, or directly adopt figure 1 The flow chart of the wet steam dry degree adjustment control system is shown.

[0041] The third step is to connect the hardware device according to the flow chart, or compile the software input hardware device according to the flow chart.

[0042] The fourth step is to put into operation and debug the system.

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Abstract

An automatic regulation and control method for the dryness of wet steam boiler features that on the basis of the principle that there is a special correlation between the enthalpy and dryness of wet steam, the consumed fuel is controlled for regulating the enthalpy of wet steam and in turn its dryness. Its advantages are high automation level, simple structure and operation, and high safety.

Description

1. Technical field [0001] The invention relates to an automatic adjustment control system, in particular to an automatic adjustment control system for wet steam dryness in the production process of a wet steam boiler. 2. Background technology [0002] Wet steam boiler is an industrial once-through boiler, which is widely used in heavy oil exploitation and other industries in the petroleum industry. Its main purpose is to produce wet steam with a certain degree of dryness for use in other production processes. The so-called wet steam is a two-phase flow medium composed of a certain mass ratio of saturated water and saturated water vapor. The so-called dryness is the percentage of the mass ratio of the saturated water vapor contained in the wet steam to the wet steam. In general, wet steam boilers work at ultra-high pressure or even subcritical conditions. The dryness of wet steam is an important indicator related to safe production and production process. [0003] So far,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F22B35/00F22B35/16
Inventor 李金叶吴业飞
Owner 李金叶
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