Pressure control device suitable for online gas chromatograph
A gas chromatograph and pressure control technology, applied in measuring devices, instruments, scientific instruments, etc., can solve the problems of high price and self-return of core components of high-frequency solenoid valves, so as to reduce the difficulty of developing products, reduce costs, and improve The effect of stability and ease of operation
Inactive Publication Date: 2021-03-16
江苏汇环环保科技有限公司
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[0002] On-line gas chromatograph is an online analysis instrument and laboratory research needs as the service goal, with the provision of representative, timely and reliable sample information as the core task, using automatic control technology, computer technology and professional software, It forms a complete system from sampling, pretreatment, analysis to data processing and storage, so as to realize the online automatic monitoring of samples. At present, the pressure control devices equipped with most online gas chromatographs are divided into two categories: one is manual Regulatory pressure regulator valves, most of the domestic regulator valves have the defect of self-retraction; the other type is automatic electronic pressure controllers, the core component of which is the high-frequency solenoid valve, which is expensive
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[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0019] see figure 1 , the present invention provides a technical solution: a pressure control device suitable for an online gas chromatograph, including a pressure control body 7, the pressure control body 7 includes a signal controller 1, a motor driver 2, a micro stepper motor 3, Coupling 4, manual regulator valve 5 and pressure sensor 6, pressure control body 7 is provided with manual regulator valve 5, one side of manual regulator valve 5 is provided with ...
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The invention discloses a pressure control device suitable for an online gas chromatograph. The device comprises a pressure control body, a stepping control unit, a manual pressure stabilizing valve and a pressure sensor are integrated in the pressure control body in the gas chromatograph, wide-range pressure regulation can be realized through the components, and in the pressure regulation process, the pressure overshoot phenomenon does not occur, the stability of the instrument is improved, the algorithm difficulty of pressure control is reduced, an imported high-frequency electromagnetic valve and a pressure sensor with extremely high real-time performance are not needed, the total cost of the instrument is reduced, a complex pressure control algorithm is not needed, the product development difficulty is reduced, and large overshoot does not exist when the pressure is increased and adjusted by using a program, so that the stability of the instrument and the convenience of operation are improved.
Description
technical field [0001] The invention relates to the technical field of pressure control devices, in particular to a pressure control device suitable for an online gas chromatograph. Background technique [0002] On-line gas chromatograph is an online analysis instrument and laboratory research needs as the service goal, with the provision of representative, timely and reliable sample information as the core task, using automatic control technology, computer technology and professional software, It forms a complete system from sampling, pretreatment, analysis to data processing and storage, so as to realize the online automatic monitoring of samples. At present, the pressure control devices equipped with most online gas chromatographs are divided into two categories: one is manual Regulatory pressure regulator valves, most of the domestic regulator valves have the defect of self-return; the other type is automatic electronic pressure controller, the core component of which is...
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IPC IPC(8): G01N30/32
CPCG01N30/32
Inventor 戴庆武曹成郭勇蔡柳柳
Owner 江苏汇环环保科技有限公司