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Device and method for controlling gas in cultivating tank

A technology of a control device and an incubator, which is applied in the direction of electric fluid pressure control, non-electric variable control, control/regulation system, etc., can solve the problems of short effective service life, increase cost, etc. The effect of a wide pressure range

Inactive Publication Date: 2015-06-10
NINGBO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Solenoid valve switches frequently, the effective service life is short, and the cost is increased accordingly

Method used

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  • Device and method for controlling gas in cultivating tank
  • Device and method for controlling gas in cultivating tank

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] figure 2 Schematically provides a simplified structural diagram of the gas control device in the incubator of the embodiment of the present invention, as figure 1 As shown, the control device includes:

[0042] At least two gas sources are connected to the mixing unit 51, and then input into the incubator 11, such as nitrogen, carbon dioxide, and oxygen;

[0043] A pressure sensor 23, the pressure sensor 23 is arranged on the incubator 11, and the output end is connected to the control unit 61;

[0044] Gas sensors 21, 22, the gas sensors are used to detect the content of at least one gas in the incubator 11, used to detect the content of carbon dioxide and oxygen, and send it to the control unit 61;

[0045] A control unit 61, the control unit 61 is used to adjust the flow rate of the at least two channels of gas according to the received pressure and gas content, and the adjustment instruction is sent to the adjustment unit;

[0046] An adjustment unit, the adjust...

Embodiment 2

[0061] An application example of the control device and its working method according to Embodiment 1 of the present invention.

[0062]In this application example, the control target is: the pressure in the incubator and the content of oxygen and carbon dioxide meet the requirements. The pressure in the incubator ranges from 80-150kPa, the oxygen content ranges from 1-19%, and the carbon dioxide content ranges from 0-20%.

[0063] The control device is as follows: an oxygen sensor, a carbon dioxide sensor and a pressure sensor are set on the incubator, and a first pipeline and a first flow sensor are also set, and the second to fourth pipelines are respectively used to feed oxygen, carbon dioxide and nitrogen into the incubator. Second to fourth proportional valves, second to fourth flow sensors and second to fourth flow control modules are respectively arranged on the second to fourth pipelines. A proportional valve, a flow sensor and a flow control module on each pipeline f...

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Abstract

The invention provides a device for controlling gas in a cultivating tank and a method for controlling gas in the cultivating tank. The cultivating tank is provided with at least two paths of gas sources; the control device comprises a pressure sensor, which is arranged on the cultivating tank, wherein the output end thereof is connected with a control unit; a gas sensor, which is used for detecting content of at least one gas in the cultivating tank, and transmitting to the control unit; the control unit, which is used for adjusting flow of at least two gases according to the received pressure and gas content, and transmitting the adjusting instruct to adjusting unit; adjusting units, which are respectively arranged on channels of at least two gases, and adjusting gas flow according to the received adjusting instruct. The device and method for controlling gas in the cultivating tank are good in stability, long in service life, and so on.

Description

technical field [0001] The invention relates to fluid control, in particular to a device and method for controlling gas in an incubator. Background technique [0002] figure 1 Schematically give a simplified structural diagram of the gas control in the incubator in the prior art, such as figure 1 As shown, the three gases are input into the mixing unit 51 and then into the incubator 11 . Gas sensors 21 and 22 are installed in the incubator 11, and the measured gas content (such as carbon dioxide and oxygen content) is transmitted to the control unit 81, and the control unit adjusts the gas content of each path according to the received gas content and the set value. The flow rate is specifically accomplished by adjusting the switch of the solenoid valve 71 . This control method has some disadvantages, such as: [0003] Since the solenoid valve is used to control the flow, the CO 2 , O 2 The constant flow control is unstable, the gas concentration of the incubator fluct...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D27/02G05D16/20G05D7/06
Inventor 闻路红俞建成吴勇宁录胜高文清郑晨亮
Owner NINGBO UNIV
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