CN203849225U - Automatic shutdown control device for gas chromatograph flow - Google Patents
Automatic shutdown control device for gas chromatograph flow Download PDFInfo
- Publication number
- CN203849225U CN203849225U CN201420066072.1U CN201420066072U CN203849225U CN 203849225 U CN203849225 U CN 203849225U CN 201420066072 U CN201420066072 U CN 201420066072U CN 203849225 U CN203849225 U CN 203849225U
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- China
- Prior art keywords
- control device
- carrier gas
- automatic shutdown
- shutdown control
- valve
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- Expired - Fee Related
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- 239000012159 carrier gas Substances 0.000 claims abstract description 54
- 239000007789 gas Substances 0.000 claims abstract description 42
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 26
- 239000010959 steel Substances 0.000 claims abstract description 26
- 238000000034 method Methods 0.000 claims description 23
- 230000008569 process Effects 0.000 claims description 20
- 230000009467 reduction Effects 0.000 claims description 14
- 230000005540 biological transmission Effects 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims 1
- 238000001514 detection method Methods 0.000 abstract description 8
- 238000012360 testing method Methods 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000004587 chromatography analysis Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 210000005069 ears Anatomy 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011112 process operation Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- Sampling And Sample Adjustment (AREA)
Abstract
The utility model relates to an automatic shutdown control device for a gas chromatograph flow. The automatic shutdown control device is characterized by comprising an automatic shutdown control device main unit which is connected with a gas chromatograph through a chromatograph power line, wherein the gas chromatograph is in pipeline connection with a carrier gas steel cylinder through a carrier gas pipe; the automatic shutdown control device main unit is in circuit connection with an electric start-stop gas valve device which is arranged on the carrier gas steel cylinder and is used for controlling the turn-on and turn-off of a pipeline through a control signal line. According to the device, the chromatograph can be automatically shut down and carrier gas can be turned off according to a standard shutdown flow under the state of unattended operation, and exception, failure and damage of instrument detection elements caused by nonstandard shutdown are avoided.
Description
Technical field
The utility model 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.
Of the present utility model being characterised in that: 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 utility model:
The utility model can be realized 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 utility model embodiment.
Fig. 2 is the electronic keying air-valve device structural representation of the utility model embodiment.
Fig. 3 is the main TV structure schematic diagram at air-valve handle fixator place of the electronic keying air-valve device of the utility model embodiment.
Fig. 4 is the plan structure schematic diagram at air-valve handle fixator place of the electronic keying air-valve device of the utility model embodiment.
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 utility model 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 utility model, all equalizations of doing according to the utility model claim change and modify, and all should belong to covering scope of the present utility model.
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 |
|---|---|---|---|
| CN201420066072.1U CN203849225U (en) | 2014-02-15 | 2014-02-15 | Automatic shutdown control device for gas chromatograph flow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420066072.1U CN203849225U (en) | 2014-02-15 | 2014-02-15 | Automatic shutdown control device for gas chromatograph flow |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203849225U true CN203849225U (en) | 2014-09-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420066072.1U Expired - Fee Related CN203849225U (en) | 2014-02-15 | 2014-02-15 | Automatic shutdown control device for gas chromatograph flow |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203849225U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104165934A (en) * | 2014-02-15 | 2014-11-26 | 国家电网公司 | Gas chromatograph flow automatic shutdown control apparatus |
| CN106645498A (en) * | 2017-01-16 | 2017-05-10 | 国网福建省电力有限公司 | Automatic starting device and method for gas chromatographic detector for transformer oil |
| 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 |
-
2014
- 2014-02-15 CN CN201420066072.1U patent/CN203849225U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104165934A (en) * | 2014-02-15 | 2014-11-26 | 国家电网公司 | Gas chromatograph flow automatic shutdown control apparatus |
| CN106645498A (en) * | 2017-01-16 | 2017-05-10 | 国网福建省电力有限公司 | Automatic starting device and method for gas chromatographic detector for transformer oil |
| CN106645498B (en) * | 2017-01-16 | 2022-07-05 | 国网福建省电力有限公司 | Automatic starting device and starting method of transformer oil gas chromatography detector |
| 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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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140924 Termination date: 20180215 |
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| CF01 | Termination of patent right due to non-payment of annual fee |