CN109030685A - Gas chromatograph and its delay automatic cutting off device - Google Patents
Gas chromatograph and its delay automatic cutting off device Download PDFInfo
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- CN109030685A CN109030685A CN201811119802.9A CN201811119802A CN109030685A CN 109030685 A CN109030685 A CN 109030685A CN 201811119802 A CN201811119802 A CN 201811119802A CN 109030685 A CN109030685 A CN 109030685A
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- 239000012159 carrier gas Substances 0.000 claims abstract description 130
- 239000007789 gas Substances 0.000 claims abstract description 47
- 230000003111 delayed effect Effects 0.000 claims abstract description 29
- 238000004587 chromatography analysis Methods 0.000 claims description 3
- 238000009792 diffusion process Methods 0.000 claims description 2
- 238000012360 testing method Methods 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 238000001816 cooling Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000008246 gaseous mixture Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 101100426754 Caenorhabditis elegans try-5 gene Proteins 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- CUZMQPZYCDIHQL-VCTVXEGHSA-L calcium;(2s)-1-[(2s)-3-[(2r)-2-(cyclohexanecarbonylamino)propanoyl]sulfanyl-2-methylpropanoyl]pyrrolidine-2-carboxylate Chemical compound [Ca+2].N([C@H](C)C(=O)SC[C@@H](C)C(=O)N1[C@@H](CCC1)C([O-])=O)C(=O)C1CCCCC1.N([C@H](C)C(=O)SC[C@@H](C)C(=O)N1[C@@H](CCC1)C([O-])=O)C(=O)C1CCCCC1 CUZMQPZYCDIHQL-VCTVXEGHSA-L 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 210000004262 dental pulp cavity Anatomy 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
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- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/04—Preparation or injection of sample to be analysed
- G01N30/16—Injection
- G01N30/20—Injection using a sampling valve
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Abstract
The present invention relates to a kind of gas chromatograph and its delay automatic cutting off device, gas chromatograph includes chromatograph ontology, delay automatic cutting off device and the carrier gas being connected with chromatograph ontology, and delay automatic cutting off device includes delay container, delay pipeline and non-return valve.The first end of delay pipeline is connected with delay container, and the second end for the pipeline that is delayed is connected with chromatograph ontology, and non-return valve is set on delay pipeline.Carrier gas in delay container can be constantly delivered in chromatograph ontology, so that the pressure of the carrier gas in delay container is smaller and smaller, when the pressure of the carrier gas in the container that is delayed is lower than the operating pressure of non-return valve, the carrier gas being delayed in container just cannot be by non-return valve, so that realizing delay is automatically stopped being passed through for carrier gas.Operating personnel can immediately close carrier gas after the shutdown of chromatograph ontology, can leave operating environment, be cooled to room temperature without waiting for the inside key part to chromatograph ontology, saved the time of operating personnel.
Description
Technical field
The present invention relates to chemical analysis apparatus technical fields, more particularly to a kind of gas chromatograph and its are delayed from dynamic circuit breaker
Device of air.
Background technique
Insulating oil is one of predominating insulation of electrical equipment, and during electric equipment operation, insulating oil is in thermal effect
Should with chemical change can occur under the action of electricity, to generate mixed gas.Using gas chromatograph by the gaseous mixture of generation
Body separates and measures the content of each component, to judge Hidden fault existing for electrical equipment.Gas chromatograph includes chromatograph
Ontology and carrier gas, the interior carrier gas contained of carrier gas can be transported in chromatograph ontology.After the shutdown of chromatograph ontology,
In order to cool down the inside key part of chromatograph ontology, still need to continue to be passed through carrier gas into chromatograph ontology, to chromatograph ontology
Inside key part be cooled to room temperature after could stop being passed through for carrier gas, therefore to need to wait until that carrier gas stops logical by operating personnel
Operating environment can be just left after entering, and cause the time of operating personnel to waste serious.
Summary of the invention
Based on this, it is necessary in view of the above-mentioned problems, providing a kind of can be delayed is automatically stopped the gas phase color of carrier gas being passed through
Spectrometer and its delay automatic cutting off device, to save the time of operating personnel.
A kind of delay automatic cutting off device of gas chromatograph, comprising:
Be delayed container；
Be delayed pipeline, and the first end of the delay pipeline is connected with the delay container, and the second of the delay pipeline
End is for being connected to chromatograph ontology；And
Non-return valve is set on the delay pipeline, and the non-return valve is used to prevent the gas at the chromatograph ontology
It diffuses in the delay container.
The delay automatic cutting off device of above-mentioned gas chromatograph has at least the following advantages:
After the shutdown of chromatograph ontology, carrier gas is closed, the carrier gas contained in container that will be delayed is passed through in chromatograph ontology,
To cool down the inside key part of chromatograph ontology.Carrier gas in delay container is constantly conveyed through delay pipeline and non-return valve
To chromatograph ontology, so that the pressure of the carrier gas in delay container is smaller and smaller, the pressure of the carrier gas wait be delayed in container is low
When the operating pressure of non-return valve, the carrier gas being delayed in container just cannot be automatically stopped by non-return valve to realize delay
Carrier gas is passed through.Operating personnel can immediately close carrier gas after the shutdown of chromatograph ontology, can then leave operating environment,
It is cooled to room temperature without waiting for the inside key part to chromatograph ontology, has saved the time of operating personnel.Non-return valve is deposited
It can realize that the delay of delay container is automatically shut down the gas piping on the one hand, thus realize the cooling of the inside key part of chromatograph ontology,
On the other hand it can prevent in the gas diffusion to delay container at chromatograph ontology, to guarantee to contain carrier gas in delay container
Purity.
Technical solution is illustrated further below:
In one of the embodiments, the non-return valve include valve body and be located at the intracorporal spring of the valve, the spring
It is detachably connected with the valve body.
Delay automatic cutting off device further includes three-way connection in one of the embodiments, and the three-way connection has phase
Intercommunicated first interface, second interface and third interface, the first interface are connected with the delay container, and described second
Interface is connected with the non-return valve, and the third interface with carrier gas for being connected.
Delay automatic cutting off device further includes the first angle valve in one of the embodiments, and first angle valve is set to
On the delay container, the delay container is connected by first angle valve with the first interface.
First angle valve and the three-way connection are detachably connected in one of the embodiments,.
A kind of gas chromatograph, comprising:
Chromatograph ontology；
The second end of delay automatic cutting off device as described above, the delay pipeline is connected with the chromatograph ontology
It is logical；And
Carrier gas is connected with the chromatograph ontology.
Above-mentioned gas chromatograph has at least the following advantages:
When work, carrier gas is first opened, carrier gas is passed through in chromatograph ontology, is continually fed into carrier gas for a period of time,
So that the intrinsic carrier gas of chromatograph is then turned on chromatograph ontology after reaching enough purity.After the shutdown of chromatograph ontology, close
Carrier gas, the interior carrier gas contained of delay container is passed through in chromatograph ontology, to cool down the inside key part of chromatograph ontology.
Since gas chromatograph includes chromatograph ontology and above-mentioned delay automatic cutting off device, has above-mentioned delay automatic cutting off device
Technical effect, therefore can be delayed and be automatically stopped being passed through for carrier gas, it does not need to remove bearing carrier gas again after operating personnel waits instrument cooling
Bottle angle valve, to save the time of operating personnel.
Technical solution is illustrated further below:
The carrier gas is connected with the delay container in one of the embodiments,.
Gas chromatograph further includes pressure reducing valve in one of the embodiments, and the pressure reducing valve is connected to the carrier gas
With the delay container, the output pressure of the pressure reducing valve is greater than the operating pressure of the non-return valve.
The pressure reducing valve includes low-pressure meter in one of the embodiments, and the low-pressure meter is for detecting the pressure reducing valve
Output pressure.
Gas chromatograph further includes the second angle valve in one of the embodiments, and second angle valve is set to the load
On gas container, the carrier gas is connected by second angle valve with the delay container.
Detailed description of the invention
Fig. 1 is the schematic diagram of the delay automatic cutting off device of gas chromatograph in an embodiment；
Fig. 2 is the schematic diagram of gas chromatograph in an embodiment.
Description of symbols:
10, gas chromatograph, 100, delay automatic cutting off device, 110, delay container, 120, delay pipeline, 121, first
Pipeline section, the 122, second pipeline section, 130, non-return valve, 140, three-way connection, 141, first interface, 142, second interface, 143, third
Interface, the 150, first angle valve, 160, supply air line, 200, chromatograph ontology, 300, carrier gas, 400, pressure reducing valve, 410, low
Press table, 420, high pressure gauge, the 500, second angle valve.
Specific embodiment
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing to the present invention
Specific embodiment be described in detail.Many details are explained in the following description in order to fully understand this hair
It is bright.But the invention can be embodied in many other ways as described herein, those skilled in the art can be not
Similar improvement is done in the case where violating intension of the present invention, therefore the present invention is not limited to the specific embodiments disclosed below.
It should be noted that it can directly on the other element when element is referred to as " being set to " another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to
To another element or it may be simultaneously present centering elements.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Each technical characteristic of embodiment described above can carry out arbitrarily
Combination, for simplicity of description, it is not all possible to each technical characteristic in above-described embodiment combination be all described, so
And as long as there is no contradiction in the combination of these technical features, it all should be considered as described in this specification.
Referring to Fig. 1, the delay automatic cutting off device 100 in an embodiment includes delay container 110, delay pipeline 120
And non-return valve 130 can close carrier gas after the closing of chromatograph ontology at once, and using delay automatic cutting off device 100 to
Chromatograph ontology is passed through carrier gas, to cool down the inside key part of chromatograph ontology.Delay automatic cutting off device 100 can be delayed
It is automatically stopped being passed through for carrier gas, to save the time of operating personnel.In the present embodiment, delay container 110 is flask.When
So, in other embodiments, the shape of delay container 110 can also be adjusted flexibly, such as one section of pipeline section, and when delay container 110
When for one section of pipeline section, delay container 110 can be two root canal sections being connected on same pipeline with the pipeline 120 that is delayed.
The first end of delay pipeline 120 is connected with delay container 110, and the second end of delay pipeline 120 is used for and chromatography
Instrument ontology is connected.Non-return valve 130 is set on delay pipeline 120, and non-return valve 130 is used to prevent the gas at chromatograph ontology
(such as air) diffuses in delay container 110.After the shutdown of chromatograph ontology, carrier gas is closed, will be contained in delay container 110
The carrier gas of dress is passed through in chromatograph ontology, to cool down the inside key part of chromatograph ontology.The carrier gas warp being delayed in container 110
Delay pipeline 120 and non-return valve 130 are constantly delivered in chromatograph ontology, so that the pressure of the carrier gas in delay container 110
Power is smaller and smaller, when the pressure of the carrier gas in the container 110 that is delayed is less than the operating pressure of non-return valve 130, is delayed in container 110
Carrier gas just cannot by non-return valve 130, thus realize delay be automatically stopped being passed through for carrier gas.Operating personnel can be in chromatograph
Carrier gas is immediately closed after ontology shutdown, can then leave operating environment, is closed without waiting for the inside of chromatograph ontology
Key part is cooled to room temperature, and has saved the time of operating personnel.In addition, non-return valve 130 is used to prevent the gas at chromatograph ontology
Body (such as air) diffuses in delay container 110, to guarantee the interior purity for containing carrier gas of container 110 that is delayed, under guaranteeing
When secondary booting, it is passed through the purity of the carrier gas of gas chromatograph 10.
Further, non-return valve 130 includes valve body and is located at the intracorporal spring of valve, and spring is detachably connected with valve body,
In order to replace different springs.Non-return valve 130 can be adjusted by replacing the decrement of different spring or adjustment spring
Operating pressure, regulative mode are easy.In the present embodiment, the operating pressure of non-return valve 130 is 0.05MPa.Certainly, in other realities
Apply in example, the operating pressure of non-return valve 130 can also be adjusted to 0MPa (not including)~0.1MPa (including).Non-return valve 130
Design of the operating pressure greater than 0MPa can guarantee after stopping being passed through of carrier gas, the remaining carrier gas having in delay container 110, and
Remaining carrier gas is reusable, the time of carrier gas is filled with when reducing next time using delay container 110, to further save work
The time of industry personnel.Design of the operating pressure of non-return valve 130 greater than 0MPa can also be convenient for delay container 110 and delay container
110 to the air-tightness of pipeline between non-return valve 130 detection.Design of the operating pressure of non-return valve 130 less than 0.1MPa can be just
More amount it can pass through non-return valve 130 in the carrier gas in delay container 110.
Further, delay automatic cutting off device 100 further includes three-way connection 140, and three-way connection 140, which has, to be interconnected
First interface 141, second interface 142 and third interface 143, first interface 141 with delay container 110 be connected, second connects
Mouth 142 is connected with non-return valve 130, and third interface 143 with carrier gas for being connected.The presence of three-way connection 140 can be compared with
Conveniently realize delay container 110, non-return valve 130 and carrier gas connection, and make be delayed container 110, non-return valve 130 and
Carrier gas three is interconnected.In the present embodiment, delay pipeline 120 includes the first sub- pipeline section 121 and the second sub- pipeline section
122, one end of the first sub- pipeline section 121 is connected with delay container 110, and the other end is connected with first interface 141, the first son pipe
Section 121 is not limited to pipeline, is also possible to quick coupling etc..One end of second sub- pipeline section 122 is connected with non-return valve 130, another
End with chromatograph ontology for being connected.Delay automatic cutting off device 100 further includes supply air line 160, and the one of supply air line 160
For being connected with carrier gas, the other end is connected with third interface 143 at end.
Further, delay automatic cutting off device 100 further includes the first angle valve 150, and the first angle valve 150, which is set to delay, to be held
On device 110, delay container 110 is connected by the first angle valve 150 with first interface 141, and the presence of the first angle valve 150 is on the one hand
On the other hand the open and close that delay container 110 can be controlled are easy to implement the company of delay container 110 and first interface 141
It is logical.Certainly, in other embodiments, the first angle valve 150 can be saved, the unlatching of dedicated switch control delay container 110 is utilized
With closing, the connection of delay container 110 and first interface 141 is realized using elements such as connectors.
Further, the first angle valve 150 and three-way connection 140 are detachably connected, in order to replace delay container 110,
Wherein, detachable connection method can be threaded connection or clamping etc..The gas chromatograph that can be connected to by the container 110 that is delayed
The gas phase color that carrier gas flux, the delay container 110 for the gas chromatograph 10 that 10 quantity, delay container 110 are connected to are connected to
The factors such as the time of the cooling of spectrometer 10 choose the buffering gas cylinder of not co-content.Such as the volume of settable delay container 110 is
The different sizes such as 1L, 2L, 4L and 8L select the delay container 110 of different size, flexibly according to the actual situation to obtain difference
Amount of delay.
Referring to Figure 2 together, the gas chromatograph 10 in an embodiment, can be used for separating the gaseous mixture generated in insulating oil
Body and the content for measuring each component, to judge Hidden fault existing for electrical equipment, wherein electrical equipment can be transformation
Device, mutual inductor or bushing etc..Gas chromatograph 10 includes delay automatic cutting off device 100, chromatograph ontology 200 and carrier gas
Container 300.The second end of delay pipeline 120 is connected with chromatograph ontology 200, in order to which the carrier gas being delayed in container 110 can
It is passed through to chromatograph ontology 200.Carrier gas 300 is connected with chromatograph ontology 200, in order in carrier gas 300
Carrier gas can be passed through to chromatograph ontology 200.Gas chromatograph 10, which can be delayed, is automatically stopped being passed through for carrier gas, to save operation
The time of personnel.
Further, carrier gas 300 is connected with delay container 110, and carrier gas 300 can be used for delay container
Carrier gas is filled in 110.When just having opened carrier gas 300, the carrier gas a part flowed out out of carrier gas 300 is via non-return valve
130 are passed through in chromatograph ontology, and another part is filled with to delay container 110, so that after carrier gas 300 is closed, delay is held
There are enough carrier gas to remove the inside key part of cooling chromatograph ontology in device 110.In the present embodiment, carrier gas 300 is
Carrier gas bottle.
Further, delay automatic cutting off device 100 further includes pressure reducing valve 400,400 communication with carrier gas container 300 of pressure reducing valve
With delay container 110, the output pressure of pressure reducing valve 400 is greater than the operating pressure of non-return valve 130, in order to flow from pressure reducing valve 400
Carrier gas out can pass through non-return valve 130.Pressure in carrier gas 300 is usually larger, and the presence of pressure reducing valve 400 can be by carrier gas
Biggish pressure in container 300 to lower pressure and exports.In the present embodiment, pressure reducing valve 400 is set to load
On gas container 300, the output pressure of pressure reducing valve 400 is 0.4MPa.Certainly, in other embodiments, the output of pressure reducing valve 400
Pressure can be also adjusted flexibly according to the actual situation.
Further, pressure reducing valve 400 includes low-pressure meter 410, and low-pressure meter 410 is used to detect the output of pressure reducing valve 400
Pressure.Since the operating pressure of non-return valve 130 is greater than 0MPa, therefore under normal circumstances, the air pressure of the display of low-pressure meter 410 is answered
Greater than 0MPa.Before opening carrier gas 300, low-pressure meter 410 can be first observed, if the air pressure of the display of low-pressure meter 410 is lower than
0MPa then illustrates carrier gas 300 between non-return valve 130 or carrier gas 300 is to there are gas leakage is existing between delay container 110
As, carrier gas 300 should be vacuumized, be then filled with carrier gas into carrier gas 300 after checking leak source and repairing leak source,
Carrier gas 300 is accessed into gas circuit and opens carrier gas 300, after the gas circuit of appropriate time (such as 15 minutes or so) is rinsed again
Reopen carrier gas 300.Pressure reducing valve 400 further includes high pressure gauge 420, and high pressure gauge 420 is used to detect the input of pressure reducing valve 400
Pressure at end, in order to understand the air pressure inside carrier gas 300.
Further, delay automatic cutting off device 100 further includes the second angle valve 500, and the second angle valve 500 is set to carrier gas appearance
On device 300, carrier gas 300 is connected by the second angle valve 500 with delay container 110, and the presence of the second angle valve 500 is on the one hand
The open and close of carrier gas 300 can be controlled, the company of carrier gas 300 Yu third interface 143 is on the other hand easy to implement
It is logical.In the present embodiment, pressure reducing valve 400 is set on carrier gas 300 by the second angle valve 500.Certainly, in other embodiments
In, the second angle valve 500 can be saved, using the open and close of dedicated switch control carrier gas 300, utilizes the members such as connector
The connection of container and first interface 141 when part realizes carrier gas.
Above-mentioned gas chromatograph 10 and its delay automatic cutting off device 100 have at least the following advantages:
Specific in the present embodiment, before use, cleaning delay container 110 and non-return valve 130 wait elements, prevent sundries from entering
Chromatograph ontology 200 damages the components such as nickel accelerant, chromatographic column or the detector in chromatograph ontology 200.Before first installation, first will
Delay container 110 vacuumizes, and is then charged with the carrier gas of 0.5Mpa, closes the first angle valve 150.It then will delay container 110 and color
Spectrometer ontology 200 is connected to, and the output end pressure of pressure reducing valve 400 is adjusted to 0.4MPa, then carries out air-leakage test.
When first used, carrier gas 300 is opened, is passed through carrier gas in 15 minutes or so to chromatograph ontology 200 to guarantee
The purity of carrier gas is enough in chromatograph ontology 200, opens the first angle valve 150, starts to test.After the test, chromatograph is closed
Ontology 200 and carrier gas 300, the interior carrier gas contained of delay container 110 continues to be passed through in chromatograph ontology 200, to cool down color
The inside key part of spectrometer ontology 200.The carrier gas being delayed in container 110 is through delay pipeline 120 and non-return valve 130 by constantly
It is delivered in chromatograph ontology 200, so that the pressure of the carrier gas in delay container 110 is smaller and smaller, in container 110 to be delayed
When the pressure of carrier gas is brought down below 0.05MPa from 0.4MPa, the carrier gas being delayed in container 110 just cannot by non-return valve 130, from
And it realizes and is automatically stopped being passed through for carrier gas.The presence of delay automatic cutting off device 100 makes operating personnel can be in chromatograph sheet
Body 200 immediately closes carrier gas 300 after shutting down, and can then leave operating environment, without waiting to chromatograph ontology 200
Internal key part is cooled to room temperature, and has saved the time of operating personnel.
Second in use, due to it is preceding it is primary stop being passed through of carrier gas after, still there is the pressure to be in the container 110 that is delayed
The carrier gas of 0.05MPa, and non-return valve 130 can prevent the gas (such as air) at chromatograph ontology 200 from diffusing to delay appearance
In device 110, therefore the purity of remaining carrier gas in delay container 110 can be effectively ensured, use benefit when delay container 110 to reduce next time
The time that chromatograph ontology 200 is rinsed with carrier gas, to further save the time of operating personnel.Carrier gas 300 is opened, from
The carrier gas a part flowed out in carrier gas 300 is passed through in chromatograph ontology 200 via non-return valve 130, another part be filled with to
Be delayed container 110, and the carrier gas of certain volume is stored when carrier gas 300 is closed, in delay container 110.
By taking the present embodiment as an example, has part carrier gas, and the purity of carrier gas when using due to second in delay container 110
Enough, opening carrier gas 300 can be foreshortened to using the time that chromatograph ontology 200 is rinsed in carrier gas from 15 minutes used for the first time
5 minutes.It should be noted that being then turned on chromatograph ontology 200 after such as rinsing 15 points using carrier gas, carried in chromatograph ontology 200
The purity of gas will further improve, and will better ensure that the stability of chromatograph ontology 200.In addition, chromatograph ontology 200 is interior
Portion's key part cooling time is usually 60 minutes, in this way, can save about 70 minutes altogether.It is 12 points by each sampling test time
Clock calculates, and is switched on every time, at least can try 5 samples within the identical working time more.By 100 calculating of annual booting, every year may be used
Mostly 500 samples of examination.It is calculated by 200 yuan of each chromatographic sample test fee, in the identical working time, can at least increase income every year
100000 yuan.
Since the usage amount of gas chromatograph 10 is larger, delay automatic cutting off device 100 can guarantee to be delayed in container 110
The purity of remaining carrier gas, therefore switching on and shutting down can be saved under the premise of guaranteeing that chromatographic performance and used life is unaffected
Waiting time can effectively improve the working efficiency of chromatography test.In addition, delay automatic cutting off device 100 also has structure letter
The features such as single, non-maintaining, high reliablity, obvious low in cost and effect.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of delay automatic cutting off device of gas chromatograph characterized by comprising
Be delayed container；
Be delayed pipeline, and the first end of the delay pipeline is connected with the delay container, and the second end of the delay pipeline is used
In connection chromatograph ontology；And
Non-return valve, the non-return valve are set on the delay pipeline, and the non-return valve is for preventing at the chromatograph ontology
Gas diffusion to the delay container in.
2. delay automatic cutting off device according to claim 1, which is characterized in that the non-return valve includes valve body and is located at
The intracorporal spring of valve, the spring and the valve body are detachably connected.
3. delay automatic cutting off device according to claim 1 or 2, which is characterized in that it further include three-way connection, described three
Pass joint has interconnected first interface, second interface and third interface, the first interface and the delay container phase
Connection, the second interface are connected with the non-return valve, and the third interface with carrier gas for being connected.
4. delay automatic cutting off device according to claim 3, which is characterized in that it further include the first angle valve, described first
Angle valve is set on the delay container, and the delay container is connected by first angle valve with the first interface.
5. delay automatic cutting off device according to claim 4, which is characterized in that first angle valve is connected with described three
It is detachably connected.
6. a kind of gas chromatograph characterized by comprising
Chromatograph ontology；
Such as delay automatic cutting off device described in any one of claim 1 to 5, the second end and the chromatography of the delay pipeline
Instrument ontology is connected；And
Carrier gas is connected with the chromatograph ontology.
7. gas chromatograph according to claim 6, which is characterized in that the carrier gas is connected with the delay container
It is logical.
8. gas chromatograph according to claim 7, which is characterized in that further include pressure reducing valve, the pressure reducing valve is connected to institute
Carrier gas and the delay container are stated, the output pressure of the pressure reducing valve is greater than the operating pressure of the non-return valve.
9. gas chromatograph according to claim 8, which is characterized in that the pressure reducing valve includes low-pressure meter, the low pressure
Table is used to detect the pressure of the output of the pressure reducing valve.
10. according to the described in any item gas chromatographs of claim 6 to 9, which is characterized in that it further include the second angle valve, it is described
Second angle valve is set on the carrier gas, and the carrier gas is connected by second angle valve with the delay container
It is logical.
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| CN201811119802.9A CN109030685A (en) | 2018-09-25 | 2018-09-25 | Gas chromatograph and its delay automatic cutting off device |
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| CN201811119802.9A CN109030685A (en) | 2018-09-25 | 2018-09-25 | Gas chromatograph and its delay automatic cutting off device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110243975A (en) * | 2019-07-12 | 2019-09-17 | 广州供电局有限公司 | Gas and oil separating plant and gas chromatographic detection equipment |
| CN111983118A (en) * | 2019-05-22 | 2020-11-24 | 海南凯美特气体有限公司 | Device for preventing pipeline carrier gas pressure is not enough when changing carrier gas high pressure steel bottle |
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