CN203241427U - Headspace sampler - Google Patents
Headspace sampler Download PDFInfo
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- CN203241427U CN203241427U CN 201320206321 CN201320206321U CN203241427U CN 203241427 U CN203241427 U CN 203241427U CN 201320206321 CN201320206321 CN 201320206321 CN 201320206321 U CN201320206321 U CN 201320206321U CN 203241427 U CN203241427 U CN 203241427U
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- sample introduction
- end cap
- introduction container
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Abstract
The utility model relates to a headspace sampler, comprising a shell and an end cover, wherein an inner cavity is molded on the shell; a sampling container for placing a sample is arranged inside the inner cavity; the end cover is connected to the end part of the shell; the corresponding part of the end cover and an opening of the sampling container are in contact seal; a carrier gas inlet channel and a sample gas outlet channel, which are communicated with the sampling container are arranged on the end cover; the carrier gas inlet channel extends inside the sampling container; a first heating device is arranged inside the inner cavity to heat the sampling container; a second heating device for heating the carrier gas inlet channel and/or the sample gas outlet channel is also arranged inside the end cover. The sampling container disclosed by the utility model is convenient to process and clean, and low in cost; adhesion of a sample gas to a pipeline can be avoided to the largest extent; the pollution caused by last detection is alleviated; the accuracy of each detection result is ensured.
Description
Technical field
The utility model relates to a kind of head-space sampler, particularly relates to the injector that a kind of FAMIS detects usefulness.
Background technology
At the gaseous ion detection field, a kind of novel gaseous ion detection technique---high field asymmetric waveform ion mobility spectral technology (FAMIS) has appearred.Compare with traditional ion mobility spectrometry detection technique, this technology has revolutionary innovation, has greatly improved the selectivity and the sensitivity that detect ion under condition of normal pressure.This technology can make a distinction the optical isomer molecule, detection sensitivity can reach the ppb concentration level, has extremely wide application prospect in fields such as gas detection, mass spectrophotometry, up to the present, this detection technique is just at the early-stage at home, and correlative study mechanism also is few.
In carry out sample gas detection analytic process with FAMIS, input checkout equipment after at first will mixing carrier gas with sample gas by injector, shows testing result the concrete computational analysis of combination gas composition at last by checkout equipment.More for detection of the injector kind of sample in the laboratory at present, CN1352390A has announced a kind of chromatic spectrum sample feeder such as the Chinese patent file, this injector comprises sample introduction mechanism, carrier gas inlet, well heater, shunting derivation passage and vaporizer, between well heater and shunting derivation passage, be provided with the carrier gas preheating chamber, the top of carrier gas preheating chamber communicates with vaporizer, and described sample introduction mechanism is arranged on the top of injector and is connected with vaporizer.Carrier gas enters the backward upper motion of carrier gas preheating chamber preheating from entrance, contacts and make it instant vaporization with the sample at top, and then carrier gas enters with the combination gas of sample and enters checkout equipment after vaporizer fully mixes.This injector can provide suitable sample mix gas for checkout equipment, makes testing result comparatively accurate.But because the sample introduction mechanism of this injector is arranged on the top of injector, the backward upper motion of carrier gas preheating, and only contact with the bottom of sample mechanism makes the sample volatilization of being heated, and Volatile Gas is with carrier gas air-flow inflow vaporizer, and then enters checkout equipment.Because the carrier gas preheating chamber of this utility model, shunting are derived between passage, the vaporizer mutually isolation and be the integral type structure, just in the end or the middle part leave the passage that air feed stream passes through, this structure is processed very difficult; And sample is heated to vaporize and wants indirectly be undertaken by the bottom that holds sample mechanism, this just requires the bottom of sample introduction mechanism that sample liquids can not leaked, the Volatile Gas that guarantees again simultaneously sample sees through the bottom, so sample introduction mechanism bottom material is had relatively high expectations, has increased the cost of manufacture of injector; In addition the gas passage of this sample introduction mechanism complicated, clean difficulty, every detection once, it is residual to have more various gas at the gas passage wall, can affect like this accuracy that detects next time.
The utility model content
The purpose of this utility model is to provide a kind of is convenient to processing, clean residual less, the lower-cost a kind of head-space sampler for the FAIMS detection of sample gas.
For achieving the above object, the utility model is by the following technical solutions:
A kind of head-space sampler comprises: housing, form inner chamber on the described housing, and be provided with in the described inner chamber for the sample introduction container of placing sample;
End cap, described end cap is connected on the end of described housing, contact sealing between the opening of the corresponding site of described end cap and described sample introduction container, described end cap is provided with carrier gas inlet channel and the sample gas outlet passageway that is communicated with described sample introduction container, and described carrier gas inlet channel extends to the inside of described sample introduction container;
First heater is arranged in the described inner chamber, and described sample introduction container is heated;
Also be provided with the secondary heating mechanism to described carrier gas inlet channel and/or the heating of described sample gas outlet passageway in the described end cap.
The bottom of described sample introduction container is provided with the device for monitoring temperature to described first heater monitoring.
Described device for monitoring temperature comprises temperature sensor, spring, bullet piece, and described bullet piece one end links to each other with described temperature sensor, and the other end can prop up the bottom of described sample introduction container under the effect of described spring.
The bottom of described sample introduction container forms interior concave spherical surface, and described bullet piece props up the part of described sample introduction container bottom by raise into gradually the evagination sphere that is complementary with described interior concave spherical surface all around to the center.
Described end cap is provided with the diffluence pass of shunting for to sample gas, and/or the dilution mouth that sample gas is diluted, and described diffluence pass, described dilution mouth are connected with described sample gas outlet passageway.
Described diffluence pass is close to the sample gas import of described sample gas outlet passageway, and described dilution mouth is close to the sample gas outlet of described sample gas outlet passageway.
Described secondary heating mechanism is the electrically heated rod that is arranged on described dilution mouthful place.
Described first heater is the columnar heating tank that the end is arranged, and has some electrically heated rod holes of extending along the length direction of described heating tank on the circumferential side wall of described heating tank, and described electrically heated rod is inserted with electrically heated rod in the hole.
The outer cover of described end cap is provided with containment envelope, and described end cap removably connects by described containment envelope and described housing.
Described containment envelope positions by pin and described end cap.
The beneficial effects of the utility model are:
1. form inner chamber on the housing of the present utility model, be provided with in the described inner chamber for the sample introduction container of placing sample; End cap is connected on the end of described housing, contact the described end cap of sealing between the opening of the corresponding site of described end cap and described sample introduction container and be provided with carrier gas inlet channel and the sample gas outlet passageway that is communicated with described sample introduction container, described carrier gas inlet channel extends to the inside of described sample introduction container; The outside and end cap at the sample introduction container are respectively equipped with heating arrangement.Successively sheathed installation between housing of the present utility model, heating arrangement and the sample introduction container, its upper end seals with end cap, and each modular construction of the present utility model is simple and separate, is convenient to process and assemble and detects cleaning after complete; And sample introduction container of the present utility model is the opening upwards setting, enters pick-up unit with the carrier gas air-flow after the sample gas volatilization, this design need not to the sample introduction container material specific (special) requirements is arranged, thereby reduced cost.In addition and in described end cap, also be provided with secondary heating mechanism to the heating of described carrier gas inlet channel and/or described sample gas outlet passageway, this heating arrangement can avoid sample gas to adhere at pipeline to the full extent, alleviate and detected the pollution that brings last time, guarantee that testing result is all comparatively accurate each time.
2. the utility model is provided with device for monitoring temperature in the bottom of sample introduction container, so just can be per sample self build-in attribute, set and add heat, to reach the optimum detection effect.
3. the device for monitoring temperature that is arranged on the sample introduction container bottom has spring and bullet piece, and the bullet piece links to each other with temperature sensor, and the bullet piece can be against the bottom of sample introduction container under the effect of spring.So just can make between pick-up unit and the sample introduction container and have certain elasticity, make the sample introduction container have certain elastic space at vertical direction, certain cushion space is arranged in the time of so on the one hand the sample introduction container being cooperated with end cap, and protection sample introduction container can be not broken because of extruding; Can make on the other hand between device for monitoring temperature and the sample introduction container more to fit tightly, to detect the actual temperature of sample in the sample introduction container.
Description of drawings
For the content that makes utility model is more likely to be clearly understood, the below is described in further detail the utility model, wherein according to specific embodiment of the utility model also by reference to the accompanying drawings
Fig. 1 is the utility model front section view;
Fig. 2 is the structural representation of the utility model heating tank;
Fig. 3 is the utility model containment envelope structural representation;
Fig. 4 is the utility model end cover structure synoptic diagram;
Reference numeral is expressed as among the figure: 1-housing, 2-sample introduction container, 3-end cap, 31-pin-and-hole, the 32-electrically heated rod, the 33-trip bolt, the 4-heating arrangement, 41-electrically heated rod hole, 5-carrier gas inlet channel, 6-sample gas outlet passageway, 61-diffluence pass, 62-dilute mouth, the 7-device for monitoring temperature, 70-temperature sensor, 71-spring, 72-bullet piece, 8-containment envelope, 9-heat insulating mattress.
Embodiment
Referring to Fig. 1-4, a kind of head-space sampler, comprise housing 1, form inner chamber on the described housing 1, be provided with in the described inner chamber for the sample introduction container 2 of placing sample, the top of described housing 1 is provided with end cap 3, contact sealing between the opening of the corresponding site of described end cap 3 and described sample introduction container 2, described end cap 3 is provided with carrier gas inlet channel 5 and the sample gas outlet passageway 6 that is communicated with described sample introduction container 2, described carrier gas inlet channel 5 extends to the inside of described sample introduction container 1, and suitable with the sample surfaces height in the sample introduction container 1; Between sample introduction container 2 and housing 1, also be provided with the first heater 4 that described sample introduction container 2 is heated; In described end cap 3, also be provided with the secondary heating mechanism to described carrier gas inlet channel 5 and/or 6 heating of described sample gas outlet passageway.The utility model is by arranging the sample introduction container 2 that is used for placing sample of opening upwards in housing 1 inside, can directly be placed on fluid sample in the sample introduction container 2 like this, and specific (special) requirements needn't be arranged the material of sample introduction container 2, the brown glass material that the sample introduction container 2 that present embodiment adopts is used for common vessel can be saved cost greatly; By carrier gas inlet channel 5 is extended to the inside of described sample introduction container 1, and go deep into below the liquid level, take away the volatilization body of sample surfaces and enter checkout equipment, the sample detection better effects if that this is weak to volatility thereby be convenient to the carrier gas air-flow.At the arranged outside first heater 4 of sample introduction container 2, can be by the sample introduction container be heated, thus promote the sample volatilization of difficult volatilization, improve the concentration of sample gas, thereby improve accuracy in detection; And be provided with secondary heating mechanism to carrier gas inlet channel 5 and/or 6 heating of described sample gas outlet passageway in end cap 3 inside, then not only can shift to an earlier date preheating to the carrier gas that enters carrier gas passage 5, can also avoid to the full extent sample gas to adhere at pipeline, alleviate and detected the pollution that brings last time, guarantee that testing result is all comparatively accurate each time.
In the present embodiment, the bottom of described sample introduction container 2 also is provided with the device for monitoring temperature 7 to described first heater 4 monitoring, the bottom that first heater 4 is passed in the bottom of described device for monitoring temperature 7 is against on the housing 1, and this described device for monitoring temperature 7 has temperature sensor 70, spring 71, bullet piece 72; One end of described bullet piece 72 links to each other with described temperature sensor, and the other end can prop up the bottom of described sample introduction container 2 under the effect of spring 71.It mainly is to have certain buffer distance when sample introduction container 2 is cooperated with end cap 3 that this elasticity arranges, the sample introduction container 2 that can guarantee so on the one hand glass material can be broken because of extruding, can also make on the other hand seal between end cap 3 and the sample introduction container 2 tightr.
The bottom of described sample introduction container 2 forms interior concave spherical surface, and described bullet piece 72 props up the part of described sample introduction container 2 bottoms by raise into gradually the evagination sphere that is complementary with described interior concave spherical surface all around to the center.This set mainly is in order to increase the contact area between bullet piece 72 and the sample introduction container 2, to make temperature sensor monitor more accurately the sample temperature of sample introduction container 2 inside, can also making the support of 72 pairs of sample introduction containers 2 of bullet piece more stable simultaneously.
Referring to Fig. 3, the described end cap 3 in the present embodiment is provided with for the diffluence pass 61 that sample gas is shunted, and for the dilution mouth 62 that sample gas is diluted, can certainly described diffluence pass 61 or described dilution mouth 62 only be set according to actual conditions.Described diffluence pass 61, described dilution mouthfuls 62 are connected with described sample gas outlet passageway 6.Diffluence pass 61, dilution mouthfuls 62 are set mainly are in order to regulate the concentration of sample gas, the concentration that guarantees to enter the sample gas of checkout equipment is suitable for detecting.
Described diffluence pass 61 is close to the sample gas import of sample gas outlet passageway 6, and described dilution mouth 62 is close to the sample gas outlet of sample gas outlet passageway 6.This set mainly is the purpose of diluting again in order to reach first throttling, improves and regulates efficient.
Referring to Fig. 4, secondary heating mechanism described in the present embodiment is the electrically heated rod 32 that is arranged on described dilution mouthful 62 places, is easy to realize temperature control and free of contamination characteristic because electrically heated rod 32 has.Offer the pin-and-hole 31 of respective depth in the relevant position of end cap 3, this electrically heated rod inserts in the blind hole, and is fixed by trip bolt 33, and described electrically heated rod can arrange one or more according to actual conditions.On described end cap 3, also be provided with electroheat pair, be used for the heating state of Real Time Monitoring end cap 3, be beneficial to control the sample temperature degree that enters checkout equipment.
Referring to Fig. 2, described first heater 4 in the present embodiment is for there being the columnar heating tank at the end, have 4 electrically heated rod holes 41 of extending along the length direction of described heating tank on the circumferential side wall of described heating tank, described electrically heated rod is inserted with electrically heated rod in the hole.First heater 4 and secondary heating mechanism can also adopt other type of heating in certain present embodiment, and adopting heating rod is optimal selection, are not restriction.
Between the bottom of described heating tank and described sample introduction container 3, heat insulating mattress 9 can also be set.It mainly is to make the bottom of sample introduction container 2 and the bottom isolation of heating tank that heat insulating mattress 9 is set here, heating tank in the present embodiment just is provided with electrically heated rod in its side, the bottom does not arrange electrically heated rod, here mainly be to consider that the device for monitoring temperature 7 of sample introduction container 2 is to realize controlling by the temperature conditions of responding to sample introduction container 2 bottoms, in case the bottom at heating tank arranges electrically heated rod, will certainly affect the monitoring temperature effect of device for monitoring temperature 7.
The outer cover of end cap described in the present embodiment 3 is provided with containment envelope 8, and this containment envelope 8 is made by insulating material, certainly, also can be according to actual conditions, consider that cost factor chooses material.Described end cap 3 removably connects with housing 1 by described containment envelope 8, has jointly consisted of the security protection shell that prevents that the experimenter is burned.
Above-mentioned embodiment just is explained in detail the technical solution of the utility model; the utility model has more than and only is confined to above-described embodiment; those skilled in the art should be understood that; the improvement on the utility model basis of the above-mentioned principle of every foundation and spirit, substitute, all should be within protection domain of the present utility model.
Claims (10)
1. head-space sampler is characterized in that:
Comprise: housing (1), described housing forms inner chamber on (1), is provided with in the described inner chamber for the sample introduction container (2) of placing sample;
End cap (3), described end cap (3) is connected on the end of described housing (1), contact sealing between the opening of the corresponding site of described end cap (3) and described sample introduction container (2), described end cap (3) is provided with carrier gas inlet channel (5) and the sample gas outlet passageway (6) that is communicated with described sample introduction container (2), and described carrier gas inlet channel (5) extends to the inside of described sample introduction container (1);
First heater (4) is arranged in the described inner chamber, and described sample introduction container (2) is heated;
Also be provided with the secondary heating mechanism to described carrier gas inlet channel (5) and/or described sample gas outlet passageway (6) heating in the described end cap (3).
2. a kind of head-space sampler according to claim 1 is characterized in that: the bottom of described sample introduction container (2) is provided with the device for monitoring temperature (7) to described first heater (4) monitoring.
3. a kind of head-space sampler according to claim 2, it is characterized in that: described device for monitoring temperature (7) comprises temperature sensor (70), spring (71), bullet piece (72), described bullet piece (72) one ends link to each other with described temperature sensor, and the other end can prop up the bottom of described sample introduction container (2) under the effect of described spring (71).
4. a kind of head-space sampler according to claim 3, it is characterized in that: the bottom of described sample introduction container (2) forms interior concave spherical surface, and described bullet piece (72) props up the part of described sample introduction container (2) bottom by raise into gradually the evagination sphere that is complementary with described interior concave spherical surface all around to the center.
5. a kind of head-space sampler according to claim 1, it is characterized in that: described end cap (3) is provided with for the diffluence pass that sample gas is shunted (61), and/or the dilution mouth (62) that sample gas is diluted, described diffluence pass (61), described dilution mouthful (62) are connected with described sample gas outlet passageway (6).
6. a kind of head-space sampler according to claim 5, it is characterized in that: described diffluence pass (61) is close to the sample gas import of described sample gas outlet passageway (6), and described dilution mouth (62) is close to the sample gas outlet of described sample gas outlet passageway (6).
7. it is characterized in that according to claim 5 or 6 described a kind of head-space samplers: the electrically heated rod that described secondary heating mechanism is located for being arranged on described dilution mouthful (62).
8. each described a kind of head-space sampler according to claim 1-4, it is characterized in that: described first heater (4) is for there being the columnar heating tank at the end, have some electrically heated rod holes (41) of extending along the length direction of described heating tank on the circumferential side wall of described heating tank, described electrically heated rod is inserted with electrically heated rod in the hole.
9. a kind of head-space sampler according to claim 1, it is characterized in that: the outer cover of described end cap (3) is provided with containment envelope (8), and described end cap (3) removably connects by described containment envelope (8) and described housing (1).
10. a kind of head-space sampler according to claim 9, it is characterized in that: described containment envelope (8) positions by pin and described end cap (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320206321 CN203241427U (en) | 2013-04-23 | 2013-04-23 | Headspace sampler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320206321 CN203241427U (en) | 2013-04-23 | 2013-04-23 | Headspace sampler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203241427U true CN203241427U (en) | 2013-10-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320206321 Expired - Lifetime CN203241427U (en) | 2013-04-23 | 2013-04-23 | Headspace sampler |
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| CN (1) | CN203241427U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105628779A (en) * | 2014-10-28 | 2016-06-01 | 中国科学院大连化学物理研究所 | Online monitor of propofol in blood, and application thereof |
| CN107533037A (en) * | 2015-02-16 | 2018-01-02 | 株式会社岛津制作所 | Sample evaporation unit and gas chromatograph |
| CN111272606A (en) * | 2020-01-21 | 2020-06-12 | 山东大学 | Manual static headspace sampling device and sampling method of injector |
| CN113049350A (en) * | 2021-03-23 | 2021-06-29 | 中国原子能科学研究院 | Radioactive gas extraction device and extraction method |
-
2013
- 2013-04-23 CN CN 201320206321 patent/CN203241427U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105628779A (en) * | 2014-10-28 | 2016-06-01 | 中国科学院大连化学物理研究所 | Online monitor of propofol in blood, and application thereof |
| CN107533037A (en) * | 2015-02-16 | 2018-01-02 | 株式会社岛津制作所 | Sample evaporation unit and gas chromatograph |
| CN111272606A (en) * | 2020-01-21 | 2020-06-12 | 山东大学 | Manual static headspace sampling device and sampling method of injector |
| CN111272606B (en) * | 2020-01-21 | 2020-12-08 | 山东大学 | Manual static headspace sampling device and sampling method of injector |
| CN113049350A (en) * | 2021-03-23 | 2021-06-29 | 中国原子能科学研究院 | Radioactive gas extraction device and extraction method |
| CN113049350B (en) * | 2021-03-23 | 2022-04-08 | 中国原子能科学研究院 | Radioactive gas extraction device and extraction method |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160920 Address after: 3, building 8, building 5, Medical Instrument Industrial Park, No. 215163 Jinfeng Road, Suzhou hi tech Zone, Jiangsu, China Patentee after: SUZHOU WEIMU INTELLIGENT SYSTEM Co.,Ltd. Address before: 3, building 8, building 5, Medical Instrument Industrial Park, No. 215163 Jinfeng Road, Suzhou hi tech Zone, Jiangsu, China Patentee before: Li Peng |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131016 |