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Surge protection method for turbocharging system compressor air distribution control and surge protection device for realizing same

A technology of turbocharging system and air volume control, which is applied to components of pumping devices for elastic fluids, pump control, mechanical equipment, etc., and can solve the problems of inability to quickly respond to air volume requirements, reduced boiler performance, and conservative safety margins, etc. problem, to achieve the effect of performance improvement, performance improvement, and accelerated response

Active Publication Date: 2011-09-14
HARBIN INST OF TECH
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  • Description
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AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problem that the surge protection method of the existing turbocharger system compressor is too conservative, making it unable to quickly respond to the current air volume demand, resulting in a decrease in boiler performance, and to provide a turbocharger Surge protection method for system compressor air volume distribution control and surge protection device for realizing the method

Method used

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  • Surge protection method for turbocharging system compressor air distribution control and surge protection device for realizing same
  • Surge protection method for turbocharging system compressor air distribution control and surge protection device for realizing same
  • Surge protection method for turbocharging system compressor air distribution control and surge protection device for realizing same

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specific Embodiment approach 1

[0025] Specific implementation mode one: the following combination figure 1 To illustrate this embodiment, the surge protection method described in this embodiment is adjusted on the basis of the ventilation rate allowed by the inherent safety margin of the turbocharger system compressor, and it includes the following steps:

[0026] Step 1: Make a difference between the set air volume given signal of the compressor and the actual signal of the air volume of the compressor acquired in real time, and then adjust through the proportional differential unit to generate the air volume control signal;

[0027]Step 2: Process the air volume control signal through the cross-limiting unit, output the air volume signal to be adjusted, and select the corresponding air volume distribution method according to the air volume signal to be adjusted, and then adjust the air volume of the compressor according to the selected air volume distribution method .

specific Embodiment approach 2

[0028] Specific implementation mode two: the following combination figure 1 Describe this embodiment. This embodiment is a further description of Embodiment 1. In the second step, the corresponding air volume distribution method is selected according to the air volume signal to be adjusted, and then the air volume of the compressor is adjusted according to the selected air volume distribution method. The specific method is:

[0029] When the air volume control signal is greater than 0, the air volume signal to be adjusted is used as the air volume signal to be increased by the compressor, and the following two steps are performed at the same time:

[0030] Step 2A: Compare the air volume signal to be increased by the compressor with the allowable ventilation volume decrement signal of the current bypass valve, and use the signal with a smaller value as the air volume decrement signal of the bypass valve, and the air volume decrement signal of the bypass valve The quantity sig...

specific Embodiment approach 3

[0035] Specific implementation mode three: the following combination figure 1 Describe this embodiment. This embodiment is a further description of Embodiment 2. In the step 2B, the air volume signal to be increased by the compressor is different from the air volume decrement signal of the bypass valve. The air volume decrement signal is the air volume decrement signal after the action of the inertia link.

[0036] The addition of the inertia link described in this embodiment can ensure that the incremental command signal of the auxiliary steam turbine is increased while the bypass valve is preferentially operated, so that the valve of the auxiliary steam turbine is opened larger, which helps to accelerate the air volume response.

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Abstract

A surge protection method for turbocharging system compressor air distribution control and a surge protection device for realizing the method belong to the filed of surge protection of a turbocharging system compressor, and solves the problems that as the safety abundance of the surge protection method of the existing turbocharging system is extremely conservative, the system can not respond to current air volume requirements rapidly, and further the performances of a boiler are reduced. According to the method and the device, a set air volume preset signal of a compressor and an air volume actual signal obtained in real time of the compressor are compared to get difference, and then an air volume control signal is generated by the adjustment of a proportion derivation block; and the air volume control signal is processed by an intersection amplitude limiting unit so as to output an air volume signal to be adjusted, a corresponding air volume distribution method is selected according to the air volume signal to be adjusted, and then the air volume of the compressor is adjusted according to the selected air volume distribution method. The device and the method are applicable to thesurge protection of the turbocharging system compressor.

Description

technical field [0001] The invention relates to a surge protection method for air volume distribution control of a turbocharger system compressor and a surge protection device for realizing the method, belonging to the field of surge protection for a turbocharger system compressor. Background technique [0002] The booster boiler is a steam power device that uses a turbocharger system to deliver a certain pressure of combustion-supporting air to the furnace. It has the characteristics of high reliability, small weight and good mobility. However, the compressor of the turbocharger unit of the booster boiler has the disadvantage of relatively poor stability due to the surge problem. [0003] For power systems, both gas turbines and steam turbines have surge problems. For example, ground gas turbines, aviation gas turbines, and naval gas turbines, etc., from an economic point of view, making their compressors operate near the surge boundary will obtain higher efficiency. Howe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D27/00F04D29/66
Inventor 于达仁范轶刘金福徐志强
Owner HARBIN INST OF TECH
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