CN203203969U - Gas chromatograph - Google Patents
Gas chromatograph Download PDFInfo
- Publication number
- CN203203969U CN203203969U CN 201320097599 CN201320097599U CN203203969U CN 203203969 U CN203203969 U CN 203203969U CN 201320097599 CN201320097599 CN 201320097599 CN 201320097599 U CN201320097599 U CN 201320097599U CN 203203969 U CN203203969 U CN 203203969U
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- CN
- China
- Prior art keywords
- chromatograph
- solenoid valve
- normally open
- open solenoid
- gas chromatograph
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The utility model relates to a gas chromatograph comprising a chromatograph body and an air supply device, wherein a tee is arranged between the air supply device and the air inlet of the chromatograph, a normally open solenoid valve is connected on the bypass of the tee, and the normally open solenoid valve is connected with a spare air tank with certain pressure. The normally open solenoid valve and the spare air tank are arranged for protecting the chromatograph and a thermal conductivity detector and prolonging the service lives of the same in the case of emergent power failure.
Description
Technical field
The utility model relates to the detecting instrument field, particularly a kind of gas chromatograph.
Background technology
The carrier gas of certain flow must be arranged during the normal operation of the chromatographic column of gas chromatograph, when its under condition of work, if there is not the carrier gas air-flow, chromatographic column and thermal conductivity detector (TCD) can be damaged by Yin Gaowen, its performance can descend, the life-span also can shorten.Therefore, before chromatographic column and the reduction of thermal conductivity detector (TCD) temperature, need to continue carry out air feed to it.But present automatic meteorological chromatograph is when outage, and solenoid valve can interrupt air feed automatically, and this may cause the damage of chromatographic column and thermal conductivity detector (TCD).The part chromatograph has selected electric energy storage device that power-off protection is provided, but the electric energy storage device cost is higher, has so just increased chromatographic cost.
Summary of the invention
The purpose of this utility model is that for the existing gas chromatograph described in the background technology chromatographic column and thermal conductivity detector (TCD) hold flimsy problem, and a kind of gas chromatograph that can solve foregoing problems is provided when cutting off the power supply suddenly.
The technical scheme that can realize goal of the invention of the present utility model is as follows:
A kind of gas chromatograph, it comprises chromatograph body and feeder, between feeder and the chromatographic air intake opening threeway is set, and connects normally open solenoid valve in the bypass of threeway, normally open solenoid valve is connected with the spare gas tank of certain pressure.
Described feeder is fan blower.
The advantage of gas chromatograph of the present utility model is: gas chromatograph of the present utility model is when normal operation; normally open solenoid valve is in closed condition; be the chromatograph air feed by fan blower; guarantee its normal operation, when unexpected outage, fan blower quits work; normally open solenoid valve is opened; this is that the interior gas of spare gas tank exports chromatograph to, and chromatographic column and thermal conductivity detector (TCD) are played a very good protection, and prevents that it is damaged because of excess Temperature.
Description of drawings
Fig. 1 is the structural representation of gas chromatograph of the present utility model;
Among the figure, 1 is the chromatograph body, and 2 is air intake opening, and 3 are threeway, and 4 is normally open solenoid valve, and 5 is spare gas tank, and 6 is fan blower.
Embodiment
Below in conjunction with Fig. 1 embodiment of the present utility model is further set forth:
Embodiment 1
A kind of gas chromatograph, it comprises chromatograph body 1 and feeder, between feeder and the chromatographic air intake opening 2 threeway 3 is set, and connects normally open solenoid valve 4 in the bypass of threeway 3, normally open solenoid valve 4 is connected with the spare gas tank 5 of certain pressure.
Feeder described in the such scheme is fan blower 6.
Claims (2)
1. gas chromatograph, it is characterized in that: it comprises chromatograph body and feeder, between feeder and the chromatographic air intake opening threeway is set, and connects normally open solenoid valve in the bypass of threeway, normally open solenoid valve is connected with the spare gas tank of certain pressure.
2. gas chromatograph according to claim 1, it is characterized in that: described feeder is fan blower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320097599 CN203203969U (en) | 2013-03-05 | 2013-03-05 | Gas chromatograph |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320097599 CN203203969U (en) | 2013-03-05 | 2013-03-05 | Gas chromatograph |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203203969U true CN203203969U (en) | 2013-09-18 |
Family
ID=49148066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320097599 Expired - Lifetime CN203203969U (en) | 2013-03-05 | 2013-03-05 | Gas chromatograph |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203203969U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109030685A (en) * | 2018-09-25 | 2018-12-18 | 广州供电局有限公司 | Gas chromatograph and its delay automatic cutting off device |
-
2013
- 2013-03-05 CN CN 201320097599 patent/CN203203969U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109030685A (en) * | 2018-09-25 | 2018-12-18 | 广州供电局有限公司 | Gas chromatograph and its delay automatic cutting off device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130918 |