CN201811950U

CN201811950U - Novel flow control system for liquid chromatogram in industrial preparation

Info

Publication number: CN201811950U
Application number: CN2010201970888U
Authority: CN
Inventors: 张大兵
Original assignee: Jiangsu Hanbon Science and Technology Co Ltd
Current assignee: Jiangsu Hanbon Science and Technology Co Ltd
Priority date: 2010-05-20
Filing date: 2010-05-20
Publication date: 2011-04-27
Anticipated expiration: 2020-05-20

Abstract

The utility model discloses a novel flow control system for liquid chromatogram in industrial preparation, comprising a diaphragm infusion pump 7, a motor 12, a frequency convertor 11, a PLC (programmable logic controller) 10, a No.1 flow regulator 2, a No.2 flow regulator 5, a No.1 mass flow meter 3, a No.2 mass flow meter 8, an anti-explosion electric control cabinet 9, a static mixer 6, a No.1 flowing phase inlet joint 1 and a No.2 flowing phrase inlet joint 4, wherein the frequency convertor 11 and the PLC 10 are arranged in the anti-explosion electric control cabinet 9; the diaphragm infusion pump 7 comprises two infusion pipelines, the first infusion pipeline is provided with the NO.1 flowing phase inlet joint 1, the No.1 flow regulator 2 and the No.1 mass flow meter 3, the second infusion pipeline is provided with the No.2 flowing phase inlet interface 4 and the No.2 flow regulator 5, and the infusion pipelines are connected to the diaphragm infusion pump 7 through the static mixer 6; and the output pipeline of the diaphragm infusion pump 7 is provided with the No.2 mass flow meter 8, and the like. With the novel flow control system for liquid chromatogram in industrial preparation, the on-line rotating speed regulation and flow control are automatically carried out in real time according to set flow and actual flow, therefore, the accuracy of system flow and gradient flow is improved, and the experimental effect of the whole industrial chromatogram preparation system is guaranteed.

Description

A kind of infant industry preparative liquid chromatography flow control system

Technical field

The utility model relates to a kind of infant industry preparative liquid chromatography flow control system, for the industrial preparation liquid chromatographic system provides accurately, reliable flow, belongs to the preparative chromatography application.

Background technology

Traditional industrial liquid phantom preparing chromatogram flow control system adopts open loop control mostly, and promptly controller sends the flow that control signal is controlled infusion pump according to the flow signal of setting, and does not have feedback signal.The drawback of this flow control system flow control is there is not feedback signal, flow for system lacks the detection link, can't know the actual flow of infusion pump, and flow control accuracy is poor, thereby meeting is the reappearance of the whole industrial preparation liquid chromatographic system of influence directly.Therefore, this flow open loop control structure, the very difficult precision that guarantees the transfusion system flow causes the reappearance of industrial preparation liquid chromatographic system relatively poor, influences whole experiment effect.

Summary of the invention

The purpose of this utility model is: a kind of infant industry preparative liquid chromatography flow control system is provided, to improve the accuracy and the stability of industrial preparation liquid chromatographic system flow, improve industrial preparation liquid chromatographic system overall performance, obtain experiment effect preferably.

This use is novel to provide a kind of industrial preparation liquid chromatography flow control system, this system comprises barrier film infusion pump, motor, frequency converter, PLC controller, a flow regulator, No. two flow regulators, a mass flowmeter, No. two mass flowmeters, explosion-proof electrification switch board, static mixer, a moving phase inlet attack and No. two mobile inlet attacks, and wherein frequency converter and PLC controller are installed in the explosion-proof electrification switch board; Its septation infusion pump has two infusion pipelines, a moving phase inlet attack, a flow regulator and a mass flowmeter are installed on first infusion pipeline, No. two moving phase inlet attacks and No. two flow regulators are installed on second infusion pipeline, article two, woven hose is connected to the barrier film infusion pump via static mixer, No. two mass flowmeters are installed on the output pipe of barrier film infusion pump, and the barrier film infusion pump is connected to motor; Wherein the PLC controller connects a flow regulator, a mass flowmeter, No. two flow regulators and No. two mass flowmeters respectively.Advantage of the present utility model and effect are: 1, closed-loop control is adopted in flow system flow control, regulate motor speed and flowrate control valve according to the automatic online in real time of the deviation control device of setting flow and actual flow, guarantee the accuracy of total system flow and gradient flow; 2, flow system flow measurement aspect adopts current flux metering mass flowmeter the most accurately, provides accurate and reliable data for measuring flow; 3, system adopts variable-frequency control technique, can make the motor economical operation, reduces the idle work of motor, prolongs the life-span of motor, and saves energy is saved cost, obtains good economic benefit.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Among the figure: No. 1 moving phase inlet attacks, No. 2 flow regulators, No. 3 mass flowmeters, 4 No. two moving phase inlet attacks, 5 No. two flow regulators, 6 static mixers, 7 barrier film infusion pumps, 8 No. two mass flowmeters, 9 explosion-proof electrification switch boards, the 10PLC controller, 11 frequency converters, 12 motor.(use first, second always: " No. one " and " No. two " can replace with " first, second ").

Embodiment

As shown in Figure 1, this system comprises barrier film infusion pump 7, motor 12, frequency converter 11, PLC controller 10, flow regulator 2, No. two flow regulators 5, mass flowmeter 3, No. two mass flowmeters 8, explosion-proof electrification switch board 9, static mixer 6, a moving phase inlet attack 1 and No. two mobile inlet attacks 4, and wherein frequency converter 11 and PLC controller 10 are installed in the explosion-proof electrification switch board 9; Its septation infusion pump 7 has two infusion pipelines, article one, infusion pipeline (after this being called " first infusion pipeline ") go up to be installed moving phase inlet attack 1, a flow regulator 2 and a mass flowmeter 3, another infusion pipeline (after this being called " second infusion pipeline ") is gone up No. two moving phase inlet attacks 4 and No. two flow regulators 5 is installed, article two, woven hose is connected to barrier film infusion pump 7 via static mixer 6, No. two mass flowmeters 8 are installed on the output pipe of barrier film infusion pump 7, and barrier film infusion pump 7 is connected to motor 12; Wherein PLC controller 10 connects flow regulator 2, mass flowmeter 3, No. two flow regulators 5 and No. two mass flowmeters 8 respectively.

Liquid enters first infusion pipeline by a moving phase inlet attack 1, the flow size of flow regulator 2 adjustings first infusion pipeline, and a mass flowmeter 3 is measured the flow of first infusion pipeline; Liquid enters second infusion pipeline by No. two moving phase inlet attacks 4, the flow size of No. two flow control valve 5 adjustings second infusion pipelines; The liquid of first infusion pipeline and second infusion pipeline enters barrier film infusion pump 7 after mixing through static mixer 6, measures total infusion pipeline total flow of (liquid of first infusion pipeline and second infusion pipeline merges infusion pipeline afterwards) by No. two mass flowmeters 8; PLC controller 10 and frequency converter 11 are installed in the explosion-proof electrification switch board 9, and motor 12 is connected to barrier film infusion pump 7, and PLC controller 10 is according to the total flow signal (S of No. two mass flowmeter 8 feedbacks ₁₊₂) and the first setting signal (r ₁, not shown) between deviation adjust the rotating speed of motor 12, guarantee the accuracy of system's total flow; PLC controller 10 is according to the first infusion pipeline flow signal (S of mass flowmeter 3 feedbacks ₁) and setting signal between deviation adjust the aperture of a flow regulator 2, guarantee the accuracy of the flow of first infusion pipeline; Total flow signal (S by No. two mass flowmeter 8 feedbacks ₁₊₂) with the first infusion pipeline flow signal (S of mass flowmeter 3 feedbacks ₁) between difference draw the flow signal (S of second infusion pipeline ₂=S ₁₊₂-S ₁), PLC controller 10 is according to the second infusion pipeline flow signal (S that obtains ₂) and the second setting signal r ₂, not shown) between deviation adjust the aperture of No. two flow regulators 5, guarantee the accuracy of the flow of second infusion pipeline.

In above-mentioned instructions, the present invention has been described with reference to certain exemplary embodiments.Yet, should recognize, can under the situation that does not depart from scope of the present invention, make various modifications and variations.Term " comprises " does not get rid of other elements or step.Term " No. one ", " No. two ", " first ", " second " etc. are used for illustration purpose, and do not represent specific order.Instructions and accompanying drawing are considered to illustrative approach, rather than ways to restrain, and all this modifications all are included in the scope of the present invention.Therefore, scope of the present invention appending claims from here is equal to decision with the legal of them, rather than only by above-mentioned example decision.

Claims

1. infant industry preparative liquid chromatography flow control system, comprise: barrier film infusion pump (7), motor (12), frequency converter (11), PLC controller (10), a flow regulator (2), No. two flow regulators (5), a mass flowmeter (3), No. two mass flowmeters (8), explosion-proof electrification switch board (9), static mixer (6), a moving phase inlet attack (1) and No. two mobile inlet attacks (4) is characterized in that:

Wherein frequency converter (11) and PLC controller (10) are installed in the explosion-proof electrification switch board (9);

Its septation infusion pump (7) has two infusion pipelines, a moving phase inlet attack (1), a flow regulator (2) and a mass flowmeter (3) are installed on first infusion pipeline, No. two moving phase inlet attacks (4) and No. two flow regulators (5) are installed on second infusion pipeline, article two, woven hose is connected to barrier film infusion pump (7) via static mixer (6), No. two mass flowmeters (8) are installed on the output pipe of barrier film infusion pump (7), and barrier film infusion pump (7) is connected to motor (12);

Wherein PLC controller (10) connects a flow regulator (2), a mass flowmeter (3), No. two flow regulators (5) and No. two mass flowmeters (8) respectively.