CN101718763B - System for controlling gas circuit of chromatographic sample - Google Patents
System for controlling gas circuit of chromatographic sample Download PDFInfo
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- CN101718763B CN101718763B CN2009103114249A CN200910311424A CN101718763B CN 101718763 B CN101718763 B CN 101718763B CN 2009103114249 A CN2009103114249 A CN 2009103114249A CN 200910311424 A CN200910311424 A CN 200910311424A CN 101718763 B CN101718763 B CN 101718763B
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- 230000002159 abnormal effect Effects 0.000 abstract description 2
- 238000012544 monitoring process Methods 0.000 abstract description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
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Abstract
The invention belongs to a real-time monitoring system, is a system for controlling a gas circuit of a chromatographic sample aiming at the pressure change in a gas circuit of a chromatographic sample of a data logging unit in the oil industry, and is characterized in that the sample gas is divided into two circuits by a tri-way valve, one circuit leads to a chromatograph via a sample pump and a vacuum gauge; the other circuit leads to an air pressure sensor, the output end of the air pressure sensor is connected with the input end of an instrumentation amplifier, the output end of the instrumentation amplifier is electrically connected with the signal input end of an A/D converter, and the data output end and the control end of the A/D converter are electrically connected with the data end and the control end of a singlechip respectively; the I/O port of the singlechip is electrically connected with a sound-light alarm circuit and an LED numeral tube display; and the I/O port of the singlechip is electrically connected with a drive circuit of a relay, the drive circuit is electrically connected with the control end of the relay, and the normally open switch or the normally closed switch of the relay is connected in a power circuit of the sample pump in series. The invention provides a system for controlling the gas circuit of the chromatographic sample, which can collect sample air pressure accurately in real time and can automatically control abnormal conditions.
Description
Technical field
The invention belongs to real-time monitoring system, is the system for controlling gas circuit of chromatographic sample that changes to well logging appearance gas circuit of chromatographic sample pressure in the petroleum industry, relates to the air-path interface of various brands chromatogram, and its sample gas pressure variation is controlled automatically.
Background technology
In well logging is produced, for various reasons, the sample pump slurry-sucking phenomenon of damaging chromatogram, sample blowby gas path happens occasionally, complete, true in order to ensure the safety of chromatogram and data; SK-3Q04; CPS-VI isochromatic spectrum gas distributor has all been installed vacuum meter, but low owing to the vacuum meter precision, fully rely on the staff to observe and can not automatic control control etc. reason, so slurry-sucking damages chromatogram; Leakage gas is surveyed data, and the core accident of drop ply of zone of interest still takes place repeatedly.
Summary of the invention
The purpose of this invention is to provide a kind of in real time, collected specimens atmospheric pressure and to the automatic system for controlling gas circuit of chromatographic sample of control of abnormal conditions accurately.
The objective of the invention is to realize like this, design a kind of system for controlling gas circuit of chromatographic sample, it is characterized in that: sample gas is divided two-way through T-valve, the one tunnel through sample pump again through vacuum meter to chromatogram; Another road is to baroceptor; The input end of the output termination instrument amplifier of baroceptor; The output terminal of instrument amplifier is electrically connected with the signal input part of A/D converter, and A/D converter data output end and control end are electrically connected with the data terminal and the control end of single-chip microcomputer.
Be electrically connected with sound light alarming circuit and LED charactron display on the I/O mouth of described single-chip microcomputer.
The I/O mouth of described single-chip microcomputer is electrically connected with the driving circuit of relay, and driving circuit is electrically connected with the control end of relay, relay often open or normally closed switch is serially connected in the electric power loop of sample pump.
The I/O mouth of described single-chip microcomputer is electrically connected with the blowback relay drive circuit of blowback relay; The blowback relay drive circuit is electrically connected with the control end of blowback relay; The blowback relay often open or normally closed switch is serially connected in the electric power loop of blowback pump; Blowback pump one termination blowback source of the gas, the other end is connected with the sample pump pipeline.
Advantage of the present invention is: owing to increase gas pressure sensor in the sample gas circuit of chromatogram; To the real-time collection of the positive and negative variation of gaseous tension,, A/D gets into the single-chip microcomputer computing after transforming, and to real-time the showing by LED of gaseous tension; When gas pressure change during greater than setting value; Carry out corresponding sound and light alarm, processing such as unusual termination of pumping guarantee normal, orderly the carrying out of gas detection logging.
Description of drawings
Below in conjunction with the embodiment accompanying drawing the present invention is described further:
Fig. 1 is an embodiment of the invention air-path control system schematic block circuit diagram;
Fig. 2 is warning, display circuit and control circuit schematic diagram.
Among the figure: 1, vacuum meter; 2, sample gas; 3, sensor; 4, instrument amplifier; 5, A/D converter; 6, warning circuit; 7, single-chip microcomputer; 8, processing unit; 9, interface circuit; 10, display; 11, chromatogram; 12, relay; 13, sample pump; 14, blowback relay; 15, driving circuit; 16, blowback relay drive circuit; 17, blowback pump; 18, blowback source of the gas.
Embodiment
As shown in Figure 1, sample gas 2 is divided two-way through T-valve, the one tunnel through sample pump 13 again through vacuum meter 1 to chromatogram 11; Another road is to baroceptor 3; The input end of the output termination instrument amplifier 4 of baroceptor 3; The output terminal of instrument amplifier 4 is electrically connected with the signal input part of A/D converter 5, and A/D converter 5 data output ends and control end are electrically connected with the data terminal and the control end of single-chip microcomputer 7.On the I/O of single-chip microcomputer 7 mouth, be electrically connected with sound light alarming circuit 6 and LED charactron display 10.Simultaneously, the I/O mouth of single-chip microcomputer 7 is electrically connected with the driving circuit 15 of relay 12, and driving circuit 15 is electrically connected with the control end of relay 12, relay 12 often open or normally closed switch is serially connected in the electric power loop of sample pump 13.In addition; The I/O mouth of single-chip microcomputer 7 is electrically connected with the blowback relay drive circuit 16 of blowback relay 14; Blowback relay drive circuit 16 is electrically connected with the control end of blowback relay 14; Blowback relay 14 often open or normally closed switch is serially connected in the electric power loop of blowback pump 17, blowback pump 17 1 termination blowback sources of the gas 18, the other end is connected with sample pump 13 pipelines.
Fig. 2 provides partial circuit figure; The P1.3 of single-chip microcomputer W77E058 is electrically connected with the input resistance of blowback relay drive circuit 16; Blowback relay drive circuit 16 is made up of a triode 9015 and a diode; Triode 9015 is the PNP pipe, and emitter is just connecing power supply, and diode and relay drive coil are serially connected in collector and the ground circuit.The power supply of the normally closed termination blowback pump 17 of relay.The P1.2 of single-chip microcomputer W77E058 is electrically connected with the input resistance of driving circuit 15; Driving circuit 15 is made up of a triode 9015 and a diode equally; Triode 9015 emitters are just connecing power supply, and diode and relay drive coil are serially connected in collector and the ground circuit.The Chang Kaiduan of relay connects in the electric power loop of sample pump 13.The P3.7 of W77E058 connects sound light alarming circuit 6.The P1.0 of W77E058, P1.1 and P1.4 connect the serial end of serial led driver MAX7219, and MAX7219 drives the air pressure of four LED show sample gas 2.
During work, the signal of baroceptor 3 output sample gas 2, baroceptor 3 outputs be the voltage signal of mv level, need amplify by instrument amplifier 4, convert analog signals to digital quantity signal through A/D converter 5 again and deliver to single-chip microcomputer 7 and handle.And real-time vacuum tightness by LED charactron display 10 show sample gas 2; When gas circuit obstruction, gas leakage take place when; Single-chip microcomputer 7 is detected the variable signal step-down of baroceptor 3 by A/D converter 5; When being lower than threshold values, single-chip microcomputer 7 breaks off through the Chang Kaiduan that control end control Driver Circuit 15 drives relay 12, closes the work of sample pump 13.When gas pressure change during greater than setting value, single-chip microcomputer 7 drives sound light alarming circuits 6 and carries out sound and light alarm.When sample gas circuit generation gas circuit is stopped up; Single-chip microcomputer 7 is connected through the normal-closed end that control end control blowback relay drive circuit 16 drives blowback relay 14; Blowback pump 17 is opened; Blowback source of the gas 18 carries out blowback through blowback pump 17 in the loop of sample gas 2, guarantee normal, orderly the carrying out of gas detection logging.
Among the present invention, instrument amplifier 4 adopts instrument amplifier AD620, and single-chip microcomputer 7 adopts W77E058, and A/D converter 5 adopts ADC0832.So only adopting above-mentioned device is not to adopt these circuit to realize control among the present invention, it is because the single-chip microcomputer of amplifier, A/D converter also can be accomplished all control tasks that employing is integrated with.
Claims (2)
1. system for controlling gas circuit of chromatographic sample, it is characterized in that: sample gas (2) is divided two-way through T-valve, the one tunnel through sample pump (13) again through vacuum meter (1) to chromatogram (11); Another road is to baroceptor (3); The input end of the output termination instrument amplifier (4) of baroceptor (3); The output terminal of instrument amplifier (4) is electrically connected with the signal input part of A/D converter (5), and A/D converter (5) data output end and control end are electrically connected with the data terminal and the control end of single-chip microcomputer (7); The I/O mouth of described single-chip microcomputer (7) is electrically connected with the driving circuit (15) of relay (12); Driving circuit (15) is electrically connected with the control end of relay (12), relay (12) often open or normally closed switch is serially connected in the electric power loop of sample pump (13); The I/O mouth of described single-chip microcomputer (7) is electrically connected with the blowback relay drive circuit (16) of blowback relay (14); Blowback relay drive circuit (16) is electrically connected with the control end of blowback relay (14); Blowback relay (14) often open or normally closed switch is serially connected in the electric power loop of blowback pump (17); Blowback pump (17) one termination blowback sources of the gas (18), the other end is connected with sample pump (13) pipeline.
2. system for controlling gas circuit of chromatographic sample according to claim 1 is characterized in that: be electrically connected with sound light alarming circuit (6) and LED charactron display (10) on the I/O mouth of described single-chip microcomputer (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103114249A CN101718763B (en) | 2009-12-15 | 2009-12-15 | System for controlling gas circuit of chromatographic sample |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103114249A CN101718763B (en) | 2009-12-15 | 2009-12-15 | System for controlling gas circuit of chromatographic sample |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101718763A CN101718763A (en) | 2010-06-02 |
| CN101718763B true CN101718763B (en) | 2012-06-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009103114249A Expired - Fee Related CN101718763B (en) | 2009-12-15 | 2009-12-15 | System for controlling gas circuit of chromatographic sample |
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| Country | Link |
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| CN (1) | CN101718763B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110318737B (en) * | 2019-07-10 | 2024-08-27 | 中石化江汉石油工程有限公司 | Automatic protection device for preventing suction drilling fluid from entering hydrogen flame chromatograph |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1063362A (en) * | 1992-02-24 | 1992-08-05 | 中国科学院大气物理研究所 | Methane is gathered and analytic system automatically |
| US5524084A (en) * | 1994-12-30 | 1996-06-04 | Hewlett-Packard Company | Method and apparatus for improved flow and pressure measurement and control |
| CN2341149Y (en) * | 1997-04-25 | 1999-09-29 | 天津市兴国科技总公司 | Gas analyser for well logging |
| CN2541843Y (en) * | 2001-12-29 | 2003-03-26 | 天津钰塔控制系统科技有限公司 | Gas sampling device of portable gas chromatograph |
| CN101424947A (en) * | 2007-10-30 | 2009-05-06 | 北京北方微电子基地设备工艺研究中心有限责任公司 | Gas path control method and device |
-
2009
- 2009-12-15 CN CN2009103114249A patent/CN101718763B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1063362A (en) * | 1992-02-24 | 1992-08-05 | 中国科学院大气物理研究所 | Methane is gathered and analytic system automatically |
| US5524084A (en) * | 1994-12-30 | 1996-06-04 | Hewlett-Packard Company | Method and apparatus for improved flow and pressure measurement and control |
| CN2341149Y (en) * | 1997-04-25 | 1999-09-29 | 天津市兴国科技总公司 | Gas analyser for well logging |
| CN2541843Y (en) * | 2001-12-29 | 2003-03-26 | 天津钰塔控制系统科技有限公司 | Gas sampling device of portable gas chromatograph |
| CN101424947A (en) * | 2007-10-30 | 2009-05-06 | 北京北方微电子基地设备工艺研究中心有限责任公司 | Gas path control method and device |
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| Publication number | Publication date |
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| CN101718763A (en) | 2010-06-02 |
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Granted publication date: 20120606 Termination date: 20121215 |