CN204314262U - Gas chromatographic sample introduction pad life monitoring device - Google Patents
Gas chromatographic sample introduction pad life monitoring device Download PDFInfo
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- CN204314262U CN204314262U CN201420853383.2U CN201420853383U CN204314262U CN 204314262 U CN204314262 U CN 204314262U CN 201420853383 U CN201420853383 U CN 201420853383U CN 204314262 U CN204314262 U CN 204314262U
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- sample introduction
- photoelectric sensor
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Abstract
The utility model discloses gas chromatographic sample introduction pad life monitoring device, comprise: fixed mount, counting display module, photoelectric sensor and power module, counting display module, photoelectric sensor and power module are individually fixed on fixed mount, fixed mount is fixed on gas chromatograph, fixed mount has a slot between the transmitting terminal of photoelectric sensor and receiving end, and this slot is used for passing for sample introduction needle tubing; Photoelectric sensor is electrically connected with counting display module, and photoelectric sensor and counting display module are electrically connected with power module respectively, and counting display module carries out counting and showing count results for the signal receiving photoelectric sensor.The utility model has the advantage of: by record number of injections, show on a display screen, remind laboratory technician when to need the inspection carrying out sample introduction pad, avoid sample introduction pad at work not obtain in time checking replacing, cause the testing result bigger error of gas chromatograph.
Description
Technical field
The utility model relates to monitoring technical field, is specifically related to a kind of gas chromatographic sample introduction pad life monitoring device.
Background technology
Gas chromatograph injection port dottle pin, is called for short sample introduction pad, is by one of key component of Sample introduction chromatographic column in chromatographic test.In gas chromatograph sampling process, when the nebulizer gas pressure only in guaranteed chromatographic column reach a certain height, detected sample could with airflow passes chromatographic column.At this, the effect of sample introduction pad is keep gas chromatograph system to be in sealing state on the one hand, sample flow path and outside are separated, system or sample leakage is entered to prevent air, keep chromatographic system internal pressure to stablize on the other hand, namely sample introduction needle is inserted and after extracting, the gas leakage of jack that dottle pin can prevent sample introduction needle from entering, can avoid extraneous air to enter instrument from pinprick simultaneously.
Sample introduction pad is generally made up of high temperature resistant, that impermeability is good silicon rubber.The ceiling temperature selecting the standard of injection port dottle pin normally to detect according to gas chromatograph comes, generally speaking, the sample introduction pad quality that upper temperature limit is lower is comparatively soft, good airproof performance, compared with the dottle pin that similar upper temperature limit is higher, puncture-resistant (sample introduction) property is good.But if use sample introduction pad at higher than recommended temperature, sample introduction pad can leak or decompose.
Sample introduction pad belongs to easy loss accessory in chromatographic system, after using a period of time, may leak air or other abnormal occurrencies.The impaired impact of sample introduction pad is as follows:
1. leak gas, detect in sample introduction process at gas chromatograph, the phenomenon that syringe can cause damage to a certain degree to sample introduction pad and leak air;
2. decompose, chromatographic column is when some higher boilings of separation detect sample, and column temperature can be relatively high, and now sample introduction pad can be subject to slight decomposition in the case of a high temperature;
3. sample loss, once the impaired gas leakage of sample introduction pad, sample will run off;
4. in chromatographic column, flow reduces, and post effect declines, and when sample introduction pad generation gas leakage or when being decomposed, in chromatographic column, pressure is just unstable, thus carrier gas flux in post is reduced, the decline of chromatographic column degree of separation;
5. go out peak abnormal, once chromatographic column degree of separation is affected, the material electric signal that detecting device detects is just inaccurate, and the chromatogram of formation just occurs exception, forms ghost peak.
In real work, the bubble-tight quality of sample introduction pad is relevant with sample size, and number of injections is more, and the impermeability of sample introduction pad is relatively poorer.But sample size has fluctuation, the method for sample introduction pad is rigorous not to adopt fixed interval to check.Should determine that time that sample introduction pad checks, (sample size was large, and number of injections is many, and the cycle of inspection will be short according to number of injections; Sample size is few, and number of injections is few, and the cycle of inspection relatively can be longer).More existing gas chromatographs are with number of injections writing function, but this equipment price is expensive, in addition, do not have the gas chromatograph of writing function to want to record number of injections at work just to seem very difficult for some.
Utility model content
In order to overcome the deficiencies in the prior art, the purpose of this utility model is to provide a kind of gas chromatographic sample introduction pad life monitoring device, by this device record number of injections, show on a display screen, laboratory technician is reminded when to need the inspection carrying out sample introduction pad, avoid sample introduction pad at work not obtain in time checking replacing, cause the testing result bigger error of gas chromatograph.
For solving the problem, the technical scheme that the utility model adopts is as follows:
Gas chromatographic sample introduction pad life monitoring device, comprise: fixed mount, counting display module, photoelectric sensor and power module, counting display module, photoelectric sensor and power module are individually fixed on fixed mount, fixed mount is fixed on gas chromatograph, fixed mount has a slot between the transmitting terminal of photoelectric sensor and receiving end, and this slot is used for passing for sample introduction needle tubing; Photoelectric sensor is electrically connected with counting display module, and photoelectric sensor and counting display module are electrically connected with power module respectively, and counting display module carries out counting and showing count results for the signal receiving photoelectric sensor.
Further, counting display module comprises power amplification circuit, counter and display, the input end of power amplification circuit and the receiving end of photoelectric sensor are electrically connected, and the output terminal of power amplification circuit and counter are electrically connected, and counter and display are electrically connected.
Further, also comprise the clear circuit be electrically connected with counter in counting display module, clear circuit is used for the counting in counter to reset, and counting display module is provided with the reset button for triggering clear circuit.
Further, fixed mount is provided with fixing threaded hole, and is removably installed on gas chromatograph by the bolt coordinated with fixing threaded hole.
Compared to existing technology, the beneficial effects of the utility model are:
1, by record number of injections, show on a display screen, remind laboratory technician when to need the inspection carrying out sample introduction pad, avoid sample introduction pad at work not obtain in time checking replacing, cause the testing result bigger error of gas chromatograph.
2, reduce the labour intensity of experimenter, need not take time, spend a lot of time and energy to judge whether sample introduction pad leaks gas, experimenter's only need reading displayed to shield impermeability that numeral can judge when this inspection sample introduction pad.
3, installation cost is low, and easy for installation, and general electromechanical engineering technician can do it yourself to install, and be easy to promote, cost performance is high.
Accompanying drawing explanation
Fig. 1 is the structural drawing of the utility model gas chromatographic sample introduction pad life monitoring device.
Fig. 2 is the utility model gas chromatographic sample introduction pad life monitoring device fundamental diagram.
Wherein: 1, fixed mount; 2, display module is counted; 3, power module; 4, transmitting terminal; 5, receiving end; 6, slot; 7, sample introduction needle tubing; 8, sample introduction pad; 9, injection port; 11, fixing threaded hole; 21, power amplification circuit; 22, counter; 23, display; 24, clear circuit.
Embodiment
Below, by reference to the accompanying drawings and embodiment, the utility model is described further:
Fig. 1 and Fig. 2 shows the preferred embodiment of the utility model gas chromatographic sample introduction pad life monitoring device, device comprises: fixed mount 1, counting display module 2, photoelectric sensor and power module 3, counting display module 2, photoelectric sensor and power module 3 to be individually fixed on fixed mount 1, fixed mount 1 is provided with fixing threaded hole 11, and is removably installed on gas chromatograph by the bolt coordinated with fixing threaded hole 11.Fixed mount 1 has a slot 6 between the transmitting terminal 4 of photoelectric sensor and receiving end 5, and this slot 6 is for passing for sample introduction needle tubing 7.Photoelectric sensor is electrically connected with counting display module 2, and photoelectric sensor and counting display module 2 are electrically connected with power module 3 respectively.
Particularly, counting display module 2 comprises power amplification circuit 21, counter 22 and display 23, the input end of power amplification circuit 21 and the receiving end 5 of photoelectric sensor are electrically connected, output terminal and the counter 22 of power amplification circuit 21 are electrically connected, and counter 22 and display 23 are electrically connected.
Further, in counting display module 2, also comprise the clear circuit 24 be electrically connected with counter 22, and be provided with the reset button for triggering clear circuit 24 on counting display module 2.
Principle of work of the present utility model is as follows: the sample introduction pad 8 of gas chromatograph is positioned at immediately below slot 6, and sample introduction needle tubing injects in the injection port 9 of sample introduction pad 8 through slot 6 and completes single injected sampling.At sample introduction needle tubing 7 through when slot 6, the signal of photoelectric sensor changes, by the receiving end 5 of photoelectric sensor by Signal transmissions to power amplification circuit 21, signal is carried out to amplify the signal being adjusted to counter 22 and being suitable for through power amplification circuit 21, counter 22 counts after receiving the signal of power amplification circuit 21 transmission, and transfer to display 23 during fructufy by counting to show, check for staff.When counting reaches the number of times of regulation, the counting in counter 22 can be reset by reset button by staff.
This programme has following beneficial effect:
1, by record number of injections, show on a display screen, remind laboratory technician when to need the inspection carrying out sample introduction pad, avoid sample introduction pad at work not obtain in time checking replacing, cause the testing result bigger error of gas chromatograph.
2, reduce the labour intensity of experimenter, need not take time, spend a lot of time and energy to judge whether sample introduction pad leaks gas, experimenter's only need reading displayed to shield impermeability that numeral can judge when this inspection sample introduction pad.
3, installation cost is low, and easy for installation, and general electromechanical engineering technician can do it yourself to install, and be easy to promote, cost performance is high.
To one skilled in the art, according to technical scheme described above and design, other various corresponding change and deformation can be made, and all these change and deformation all should belong within the protection domain of the utility model claim.
Claims (4)
1. gas chromatographic sample introduction pad life monitoring device, it is characterized in that, comprise: fixed mount, counting display module, photoelectric sensor and power module, counting display module, photoelectric sensor and power module are individually fixed on fixed mount, fixed mount is fixed on gas chromatograph, fixed mount has a slot between the transmitting terminal of photoelectric sensor and receiving end, and this slot is used for passing for sample introduction needle tubing; Photoelectric sensor is electrically connected with counting display module, and photoelectric sensor and counting display module are electrically connected with power module respectively, and counting display module carries out counting and showing count results for the signal receiving photoelectric sensor.
2. gas chromatographic sample introduction pad life monitoring device according to claim 1, it is characterized in that, counting display module comprises power amplification circuit, counter and display, the input end of power amplification circuit and the receiving end of photoelectric sensor are electrically connected, the output terminal of power amplification circuit and counter are electrically connected, and counter and display are electrically connected.
3. gas chromatographic sample introduction pad life monitoring device according to claim 2, it is characterized in that, the clear circuit be electrically connected with counter is also comprised in counting display module, clear circuit is used for the counting in counter to reset, and counting display module is provided with the reset button for triggering clear circuit.
4. gas chromatographic sample introduction pad life monitoring device according to claim 1, it is characterized in that, fixed mount is provided with fixing threaded hole, and is removably installed on gas chromatograph by the bolt coordinated with fixing threaded hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420853383.2U CN204314262U (en) | 2014-12-26 | 2014-12-26 | Gas chromatographic sample introduction pad life monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420853383.2U CN204314262U (en) | 2014-12-26 | 2014-12-26 | Gas chromatographic sample introduction pad life monitoring device |
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| Publication Number | Publication Date |
|---|---|
| CN204314262U true CN204314262U (en) | 2015-05-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420853383.2U Active CN204314262U (en) | 2014-12-26 | 2014-12-26 | Gas chromatographic sample introduction pad life monitoring device |
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| CN (1) | CN204314262U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108020606A (en) * | 2016-11-04 | 2018-05-11 | 罗斯蒙特分析公司 | The monitoring of analyzer component |
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2014
- 2014-12-26 CN CN201420853383.2U patent/CN204314262U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108020606A (en) * | 2016-11-04 | 2018-05-11 | 罗斯蒙特分析公司 | The monitoring of analyzer component |
| CN108020606B (en) * | 2016-11-04 | 2024-03-26 | 罗斯蒙特公司 | Monitoring of analyzer components |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Device for monitoring life of gas chromatography sample injection pad Effective date of registration: 20190606 Granted publication date: 20150506 Pledgee: Panyu Branch of Guangzhou Bank Co., Ltd. Pledgor: Guangzhou Jingcheng Inspection Technology Co.,Ltd. Registration number: 2019440000207 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20200622 Granted publication date: 20150506 Pledgee: Panyu Branch of Guangzhou Bank Co.,Ltd. Pledgor: GUANGZHOU JINGCHENG TEST TECHNOLOGY Co.,Ltd. Registration number: 2019440000207 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| CP03 | Change of name, title or address |
Address after: Room 201, No. 6, Yiheng West Road, Dongsha village, Donghuan street, Panyu District, Guangzhou, Guangdong 511402 Patentee after: State inspection and testing holding group Jingcheng Testing Co.,Ltd. Address before: Room 201, No. 6, Yiheng West Road, Dongsha village, Donghuan street, Panyu District, Guangzhou, Guangdong 519175 Patentee before: GUANGZHOU JINGCHENG TEST TECHNOLOGY CO.,LTD. |
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| CP03 | Change of name, title or address |