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Heating valve control system and segmented control method thereof

A technology of valve control and segmental control, applied in heating systems, central heating components, central heating sensors, etc., can solve problems such as temperature control hysteresis, achieve the effects of reducing regulation cycles, solving temperature control hysteresis, and prolonging life

Active Publication Date: 2018-12-11
SHANDONG HEGUANG SMART ENERGY TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, solve the problem of temperature control hysteresis under conventional heating conditions, so as to achieve the purpose of saving energy

Method used

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  • Heating valve control system and segmented control method thereof
  • Heating valve control system and segmented control method thereof
  • Heating valve control system and segmented control method thereof

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Embodiment Construction

[0045] In order to better understand the present invention, the specific implementation manners of the present invention will be explained in detail below in conjunction with the accompanying drawings and application examples.

[0046] The original PID adjustment mode is a single valve opening range, the formula used is as follows, and the control graph is as follows image 3 :

[0047]

[0048] u (t) : Regulator output signal

[0049] e(t): deviation signal

[0050] k P : Scale factor

[0051] I τ :Integration time

[0052] T D : Derivative time

[0053] That is to say, no matter what the water supply temperature is, the upper and lower deviations of its adjustment are the same fixed value, and the valve adjustment range will be large, and the adjustment period will be long, resulting in lagging temperature control.

[0054] A heating valve control system and a segmented control method provided by the present invention divide the supply water temperature into stage...

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Abstract

The invention discloses a heating valve control system and a segmented control method thereof. The temperatures of supplied water are divided according to stages, and different valve opening ranges are set in different stages; according to an original control system and an existing PID regulation mechanism, the PID regulation mode is adjusted, and the fluctuation range of valve opening varies according to the variation of water temperature range. By controlling the opening range of an execution mechanism under different temperature conditions, the regulation cycle of the execution mechanism can be reduced, the shortcomings that the regulation range is too large and regulation is not timely are overcome, the failure of the execution mechanism can be reduced, and the service life of the execution mechanism can be prolonged. On the other hand, the temperature control lag problem under the conventional heating condition is solved, and the energy is saved.

Description

technical field [0001] The invention belongs to the field of urban heating, in particular to a heating valve control system and a segmented control method thereof. Background technique [0002] The urban central heating system has been constructed and applied in the northern cities of our country for several years. The electric actuator has been more and more widely used in the adjustment process. The electric actuator receives the analog signal (generally 4-20mA current signal) from the regulator or the digital signal of the host computer, and converts it into an electric actuator. Corresponding mechanical displacement (angle, straight line or multi-turn) and automatically changing the operating variable (regulating valve opening) to achieve the purpose of automatically adjusting the adjusted parameter (temperature), so that the production process can be carried out according to the predetermined requirements, and the electric execution The device generally uses an electri...

Claims

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Application Information

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IPC IPC(8): F24D19/10
CPCF24D19/1033F24D2220/0271F24D2220/04
Inventor 李剑辉王童韩洪森朱利峰秦齐杨文坤张智新
Owner SHANDONG HEGUANG SMART ENERGY TECH CO LTD
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