CN104165934A - Gas chromatograph flow automatic shutdown control apparatus - Google Patents
Gas chromatograph flow automatic shutdown control apparatus Download PDFInfo
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- CN104165934A CN104165934A CN201410051297.4A CN201410051297A CN104165934A CN 104165934 A CN104165934 A CN 104165934A CN 201410051297 A CN201410051297 A CN 201410051297A CN 104165934 A CN104165934 A CN 104165934A
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- automatic shutdown
- control device
- shutdown control
- carrier gas
- valve
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Abstract
The invention relates to a gas chromatograph flow automatic shutdown control apparatus. The apparatus is characterized in that the apparatus comprises an automatic shutdown control apparatus host connected with a gas chromatograph through a chromatograph power line, the gas chromatograph is connected with a carrying gas steel bottle pipeline through a carrying gas tube, and the automatic shutdown control apparatus host is connected with an electric on-off gas valve device used for controlling the on-off of the pipeline and arranged on the carrying gas steel bottle through a control signal line. The apparatus can realize the automatic shutdown and carrying gas shutoff of the chromatograph according to a standard shutdown flow in an unattended state, and avoids the abnormity, fault and damage caused by nonstandard shutdown of the detection elements of the apparatus.
Description
Technical field
The present invention relates to a kind of gas chromatograph flow process automatic shutdown control device, particularly a kind of gas chromatograph that is applicable to various models by the automatic powered-down of flow process unmanned, close the dedicated control device of carrier gas.
Background technology
In recent years, along with the development of oil chromatography detection technique, gas chromatograph is more and more in the use of electric system, has become the important instrument that guarantees power equipment security of operation.
According to chromatograph, use rules, gas chromatograph when start must elder generation to the carrier gas (nitrogen) that passes into constant pressure in instrument, then power-on pass into another two kinds of assist gass (hydrogen, air), each detection system of instrument is heated up until each system keeps constant temperature, just can carry out the testing of gas sample.When testing finishes, should first each detection system of gas chromatograph be stopped to constant temperature, close hydrogen, air, retain carrier gas (nitrogen).After each detection system temperature naturally cools to normal temperature, close instrument power source, until power-off, after 15 minutes, close again carrier gas valve.By above normal process operation, can guarantee that each detecting element of chromatograph can and not lose suddenly carrier gas protection in cooling procedure because of power-off suddenly abnormal damage and fault occur, improve the serviceable life of instrument.
For guaranteeing chromatograph flow process shutdown in accordance with regulations, conventional working method is in the process of chromatograph shutdown, to send special messenger to carry out scene to wait for, and waits each detection system temperature to naturally cool to artificial powered-down and carrier gas after normal temperature.Because each shutdown needs waiting time very long, the personnel that wait for be for can leave as early as possible testing ground, often take artificially to shorten carrier gas pass into the time, only close power supply not bearing carrier gas or not etc. instrument cooling with regard to the way of forced interruption pass gas.This way has caused chromatograph Frequent Troubles, instrument reliability of operation to reduce, and loss is also wasted in carrier gas in a large number, has had a strong impact on normally carrying out of oil chromatography test.
Summary of the invention
The development object of this device is to change current gas chromatograph shutdown process and relies on artificial working method of closing power supply and bearing carrier gas on duty completely, and provide a kind of easy to install, can realize the gas chromatograph flow process automatic shutdown control device that unmanned closes power supply, bearing carrier gas control automatically.
The invention is characterized in: a kind of gas chromatograph flow process automatic shutdown control device, it is characterized in that: comprise the automatic shutdown control device main frame being connected with gas chromatograph through chromatograph power lead, described gas chromatograph is connected with carrier gas steel cylinder pipeline through carrier gas pipe, described automatic shutdown control device main frame through control signal wire be placed in carrier gas steel cylinder in order to the electronic keying air-valve device circuit of pilot piping break-make, be connected.
Wherein, described electronic keying air-valve device comprises being fixed on the anchor ear on carrier gas steel cylinder, described anchor ear is vertically connected with a motor mounting rack through linking arm, described motor mounting rack be provided with exchange forward and reverse motor with by exchanging forward and reverse motor-driven speed reduction unit, the below of described motor mounting rack is provided with the air-valve handle fixator that drives carrier gas Steel cylinder gas valve handle to rotate, and described air-valve handle fixator drives rotation by the transmission main shaft of speed reduction unit.
Described air-valve handle fixator is columnar structured, on cylindrical shape lateral wall, be often separated by 72 ° of circular arcs and be drilled with a through hole, in hole, be respectively rotary with a fixing bolt, can move forward and backward 5 grooves that snap on carrier gas Steel cylinder gas valve handle, on cylindrical shape outside, edge is rotary with a set screw, described linking arm is provided with the air valve positioning switch that can be driven by set screw, and the air valve of opening that described air valve positioning switch is fixed on linking arm by left and right stops positioning switch, closes air valve and stop positioning switch and form.
The cylinder top center of described air-valve handle fixator is fixed with a linkage tube matching with speed reduction unit transmission main shaft.
Described anchor ear is two semicircle left and right structures, uses bolted with it year carrier gas steel bottle, and there is one deck rubber antiskid pad its inner side with body contact portion.
Described air valve positioning switch is connected with the forward and reverse motor circuit of interchange.
Also comprise the carrier gas reduction valve of being located on carrier gas steel cylinder.
Described automatic shutdown control device main frame comprises AC/DC changeover switch, power-supply controller of electric, electrotimer, auxiliary reclay, alternating current generator commutation control circuit.
Advantage of the present invention:
The present invention can realize under unmanned state, allow chromatograph according to the shutdown process of standard, carry out automatic shutdown, bearing carrier gas completely, abnormal, fault and the damage of having avoided instrument detecting element to cause because of shutdown lack of standardization; The electrotimer the adopting time arbitrarily of can carrying out is set, and set-up mode is flexible, and range of application is wide; Exclusive electronic keying air-valve device is applicable to the carrier gas steel cylinder of different height specifications, and can close reliably source of the gas, prevents that carrier gas from leaking, and avoided the meaningless loss of carrier gas; The all parts of this control device all adopt external install and be connected, and without chromatograph itself is made any change, do not change chromatographic property indices, can not affect chromatographic normal boot-strap and test detection; The shutdown of the gas chromatograph of the very applicable various models of this device is controlled and is used, wide application.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention.
Fig. 2 is the electronic keying air-valve device structural representation of the embodiment of the present invention.
Fig. 3 is the main TV structure schematic diagram at air-valve handle fixator place of the electronic keying air-valve device of the embodiment of the present invention.
Fig. 4 is the plan structure schematic diagram at air-valve handle fixator place of the electronic keying air-valve device of the embodiment of the present invention.
1 gas chromatograph, 2 chromatograph power switches, 3 chromatograph power leads, 4 carrier gas pipes, 5 automatic shutdown control device main frames, 6 control signal wires, 7 carrier gas reduction valve, 811 exchange forward and reverse motor, 812 speed reduction units, 813 air-valve handle fixators, 9 air-valve handles, 10 carrier gas steel cylinders, 1111 anchor ears, 1112 motor mounting racks, 1211 open air valve stops positioning switch, 1212 close air valve stops positioning switch, and 13 fix bolt, 14 set screws.
Embodiment
Referring to figs. 1 through Fig. 4, the present invention relates to a kind of gas chromatograph flow process automatic shutdown control device, comprise the automatic shutdown control device main frame 5 being connected with gas chromatograph 1 through chromatograph power lead 3, described gas chromatograph 1 is connected with carrier gas steel cylinder 10 pipelines through carrier gas pipe 4, described automatic shutdown control device main frame 5 through control signal wire 6 be placed in carrier gas steel cylinder 10 in order to the electronic keying air-valve device circuit of pilot piping break-make, be connected.
Above-mentioned electronic keying air-valve device comprises being fixed on the anchor ear 1111 on carrier gas steel cylinder, described anchor ear 1111 is vertically connected with a motor mounting rack 1112 through linking arm, described motor mounting rack be provided with exchange forward and reverse motor 811 with by exchanging forward and reverse motor-driven speed reduction unit 812, the below of described motor mounting rack is provided with the air-valve handle fixator 813 that drives carrier gas Steel cylinder gas valve handle 9 to rotate, and described air-valve handle fixator 813 drives rotation by the transmission main shaft of speed reduction unit.
Above-mentioned air-valve handle fixator 813 is columnar structured, on cylindrical shape lateral wall, be often separated by 72 ° of circular arcs and be drilled with a through hole, in hole, be respectively rotary with a fixing bolt 13, can move forward and backward 5 grooves that snap on carrier gas Steel cylinder gas valve handle, on cylindrical shape outside, edge is rotary with a set screw 14, described linking arm is provided with the air valve positioning switch that can be driven by set screw, and the air valve of opening that described air valve positioning switch is fixed on linking arm by left and right stops positioning switch 1211, closes air valve and stop positioning switch 1212 and form.
The cylinder top center of above-mentioned air-valve handle fixator is fixed with a linkage tube matching with speed reduction unit transmission main shaft.
Above-mentioned anchor ear is two semicircle left and right structures, and by bolted, with it carrier gas steel bottle, there is one deck rubber antiskid pad its inner side with body contact portion.
Above-mentioned air valve positioning switch is connected with the forward and reverse motor circuit of interchange.
Also comprise the carrier gas reduction valve 7 of being located on carrier gas steel cylinder.
Above-mentioned automatic shutdown control device main frame comprises AC/DC changeover switch, power-supply controller of electric, electrotimer, auxiliary reclay, alternating current generator commutation control circuit.
During use, the anchor ear of electronic keying air-valve device 1111 is arranged on carrier gas steel cylinder 10, again air-valve handle fixator 813 is enclosed within on air-valve handle 9, the position of fastening completely by air-valve handle 9 fixes bolt 13 by 5 and snaps in respectively 5 grooves on air-valve handle 9, by air-valve handle 9 overall clampings, reset the position of bolt 14 on air-valve handle fixator 813, bolt 14 can be compressed and close the contact that air valve stops positioning switch 1212.
To control device main frame 5 input AC 220V power supplys, then gas chromatograph 1 attaching plug is inserted to the power output socket on control device main frame 5, open chromatograph power switch 2.Open the power switch on automatic shutdown control device main frame 5, now in main frame, the A.C. contactor KM in power-supply controller of electric starts, and connects main frame internal communication 220V power supply, control loop power supply.Press " chromatograph start " key on main frame 5, start relay 1J in control loop starts, its normal opened contact 1J1,1J2 are closed, commutation locking normally closed contact 1J3 disconnects, electronic keying air-valve device alternating current generator 811 is transfused to " reversion " signal, and alternating current generator 811 starts counterclockwise to be outwarded winding air-valve handle 9.When air-valve handle 9 rotation makes bolt 14 be pressed onto out air valve to stop the normally closed contact of positioning switch 1211, alternating current generator 811 power supplys are cut off, and alternating current generator 811 stops operating.Now carrier gas source of the gas is opened, and in chromatograph, passes into carrier gas, and simultaneously the working power of chromatograph 1 is also connected, can start to carry out the gas chromatograph gentle sample experiment work that arranges normally, heats up.
When experiment work finishes, it is cooling that each detection system starts nature.Only need press " chromatograph shutdown " key on main frame 5, testing staff can leave.The relay 2J that now shuts down starts, its commutation locking normally closed contact 2J2 disconnects, its normal opened contact 2J1 is closed, start electrotimer SJ, when arriving the predefined pass 1 power supply time of chromatograph, by timing normally closed contact SJ1 action, disconnect the working power of chromatograph 1, the control loop that timing normally closed contact SJ3 action disconnects start relay 1J, make normally closed contact 1J3 recover normally off.Now, electrotimer enters bearing carrier gas time delay in 15 minutes, and after time delay arrives, regularly normal opened contact SJ2 is closed, to electronic keying air-valve device alternating current generator 811 input " forward " signals, air-valve handle 9 clockwise direction is screwed.When rotating with air-valve handle 9 and be pressed onto, bolt 14 closes air valve while stopping the normally opened contact of positioning switch 1212, power control relay 3J starts, disconnect its normally closed contact 3J1,3J2, now alternating current generator 811 power supplys are cut off, alternating current generator 811 stops operating, and also power-off restoration of A.C. contactor KM in power-supply controller of electric will install main frame 5 each several part working powers all to cut off " chromatograph start " key, " chromatograph shutdown " key automatic resetting.By above process, just realized this device in unattended situation, by standard shutdown process, automatically close chromatograph power supply and the control of closing carrier gas.
The foregoing is only preferred embodiment of the present invention, all equalizations of doing according to the present patent application the scope of the claims change and modify, and all should belong to covering scope of the present invention.
Claims (8)
1. a gas chromatograph flow process automatic shutdown control device, it is characterized in that: comprise the automatic shutdown control device main frame being connected with gas chromatograph through chromatograph power lead, described gas chromatograph is connected with carrier gas steel cylinder pipeline through carrier gas pipe, described automatic shutdown control device main frame through control signal wire be placed in carrier gas steel cylinder in order to the electronic keying air-valve device circuit of pilot piping break-make, be connected.
2. a kind of gas chromatograph flow process automatic shutdown control device according to claim 1, it is characterized in that: described electronic keying air-valve device comprises being fixed on the anchor ear on carrier gas steel cylinder, described anchor ear is vertically connected with a motor mounting rack through linking arm, described motor mounting rack be provided with exchange forward and reverse motor with by exchanging forward and reverse motor-driven speed reduction unit, the below of described motor mounting rack is provided with the air-valve handle fixator that drives carrier gas Steel cylinder gas valve handle to rotate, and described air-valve handle fixator drives rotation by the transmission main shaft of speed reduction unit.
3. a kind of gas chromatograph flow process automatic shutdown control device according to claim 2, it is characterized in that: described air-valve handle fixator is columnar structured, on cylindrical shape lateral wall, be often separated by 72 ° of circular arcs and be drilled with a through hole, in hole, be respectively rotary with a fixing bolt, can move forward and backward 5 grooves that snap on carrier gas Steel cylinder gas valve handle, on cylindrical shape outside, edge is rotary with a set screw, described linking arm is provided with the air valve positioning switch that can be driven by set screw, the air valve of opening that described air valve positioning switch is fixed on linking arm by left and right stops positioning switch, close air valve and stop positioning switch composition.
4. a kind of gas chromatograph flow process automatic shutdown control device according to claim 2, is characterized in that: the cylinder top center of described air-valve handle fixator is fixed with a linkage tube matching with speed reduction unit transmission main shaft.
5. a kind of gas chromatograph flow process automatic shutdown control device according to claim 2, it is characterized in that: described anchor ear is two semicircle left and right structures, by bolted, carrying with it carrier gas steel bottle, there is one deck rubber antiskid pad its inner side with body contact portion.
6. a kind of gas chromatograph flow process automatic shutdown control device according to claim 2, is characterized in that: described air valve positioning switch is connected with the forward and reverse motor circuit of interchange.
7. a kind of gas chromatograph flow process automatic shutdown control device according to claim 1, is characterized in that: also comprise the carrier gas reduction valve of being located on carrier gas steel cylinder.
8. a kind of gas chromatograph flow process automatic shutdown control device according to claim 1, is characterized in that: described automatic shutdown control device main frame comprises AC/DC changeover switch, power-supply controller of electric, electrotimer, auxiliary reclay, alternating current generator commutation control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410051297.4A CN104165934B (en) | 2014-02-15 | 2014-02-15 | A kind of gas chromatograph flow process automatic shutdown control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410051297.4A CN104165934B (en) | 2014-02-15 | 2014-02-15 | A kind of gas chromatograph flow process automatic shutdown control device |
Publications (2)
| Publication Number | Publication Date |
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| CN104165934A true CN104165934A (en) | 2014-11-26 |
| CN104165934B CN104165934B (en) | 2016-05-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410051297.4A Active CN104165934B (en) | 2014-02-15 | 2014-02-15 | A kind of gas chromatograph flow process automatic shutdown control device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105823843A (en) * | 2016-04-21 | 2016-08-03 | 安徽绿洲技术服务有限公司 | Gas chromatograph |
| CN107544412A (en) * | 2017-09-12 | 2018-01-05 | 国网福建省电力有限公司 | A kind of control circuit of oil chromatography experiment automatic sampling apparatus |
| CN112014499A (en) * | 2020-08-23 | 2020-12-01 | 国网山东省电力公司莱芜供电公司 | Precise gas control device of gas chromatograph |
Citations (4)
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| GB2132758A (en) * | 1982-12-23 | 1984-07-11 | Werner Ratfisch | Monitoring hydrocarbons in air |
| GB2174016A (en) * | 1985-04-09 | 1986-10-29 | John David Bagley | Improvements in or relating to high performance liquid chromatography systems |
| CN102053164A (en) * | 2009-10-28 | 2011-05-11 | 中国科学院大气物理研究所 | System and method for automatically acquiring and analyzing trace gas |
| CN203849225U (en) * | 2014-02-15 | 2014-09-24 | 国家电网公司 | Automatic shutdown control device for gas chromatograph flow |
-
2014
- 2014-02-15 CN CN201410051297.4A patent/CN104165934B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2132758A (en) * | 1982-12-23 | 1984-07-11 | Werner Ratfisch | Monitoring hydrocarbons in air |
| GB2174016A (en) * | 1985-04-09 | 1986-10-29 | John David Bagley | Improvements in or relating to high performance liquid chromatography systems |
| CN102053164A (en) * | 2009-10-28 | 2011-05-11 | 中国科学院大气物理研究所 | System and method for automatically acquiring and analyzing trace gas |
| CN203849225U (en) * | 2014-02-15 | 2014-09-24 | 国家电网公司 | Automatic shutdown control device for gas chromatograph flow |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105823843A (en) * | 2016-04-21 | 2016-08-03 | 安徽绿洲技术服务有限公司 | Gas chromatograph |
| CN107544412A (en) * | 2017-09-12 | 2018-01-05 | 国网福建省电力有限公司 | A kind of control circuit of oil chromatography experiment automatic sampling apparatus |
| CN107544412B (en) * | 2017-09-12 | 2023-05-23 | 国网福建省电力有限公司 | Control circuit of automatic sample injection device for oil chromatography test |
| CN112014499A (en) * | 2020-08-23 | 2020-12-01 | 国网山东省电力公司莱芜供电公司 | Precise gas control device of gas chromatograph |
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| Publication number | Publication date |
|---|---|
| CN104165934B (en) | 2016-05-04 |
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