CN202141627U - Low-temperature carrier gas cold-trapping and thermal-desorption device - Google Patents
Low-temperature carrier gas cold-trapping and thermal-desorption device Download PDFInfo
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- CN202141627U CN202141627U CN201120074210U CN201120074210U CN202141627U CN 202141627 U CN202141627 U CN 202141627U CN 201120074210 U CN201120074210 U CN 201120074210U CN 201120074210 U CN201120074210 U CN 201120074210U CN 202141627 U CN202141627 U CN 202141627U
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Abstract
The utility model provides a low-temperature carrier gas cold-trapping and thermal-desorption device. A trapping tube, heating plates and a temperature sensor are mounted in a trapping and desorption box, a cold carrier gas inlet is formed at the bottom of the trapping and desorption box, a cold carrier gas outlet, a temperature sensor insertion hole, and a trapping tube in-out interface are formed on a sealing cover at the top of the trapping and desorption box; absorbent is filled in the trapping tube, the heating plates are arranged outside the trapping tube, and the temperature sensor is arranged in an isothermal zone outside the trapping tube; the trapping tube inlet is connected with a sweeping system and high-purity carrier gas respectively through three-way reversing valves; the outlet of the trapping tube is connected with a detecting system and a discharge guide pipe respectively through three-way reversing valves; and a gas cooling tube is mounted in a cold-trap insulation box, the inlet of the gas cooling tube is connected with a drying tube and a gas pump respectively, the outlet of the gas cooling tube enters the trapping and desorption box, and the returned gas is recycled through guide pipes and the gas pump. The utility model has the benefits that cold carrier gas flow is in a low temperature, and a fast warming device is in a high temperature, so as to achieve integrated continuous operation and extraction and enrichment of low-concentration and high-volatility organic pollutant in solution sample.
Description
Technical field
The utility model relates to a kind of scavenging trap; Relate in particular to a kind of employing low temperature carrier gas stream cold trapping-thermal desorption device; Be used for various water body example low concentrations, the extraction of high volatile volatile organic contaminant, enrichment, and can realize continuously function such as cryogenic trapping, high temperature desorb activation fast.
Background technology
Traditional scavenging trap adopts long glass of a 10～30cm or stainless-steel tube as trap tube usually, is filled with specific adsorbent in the pipe.This trap tube normally carries out organic capture in the sweep gas at normal temperatures.Yet some high-volatile organic substances are because its special physical property, and the adsorbent that is difficult at normal temperatures to be caught in the collector is adsorbed, causes arresting efficiency to descend.In order to satisfy normal need of work; People use liquid nitrogen, dry ice etc. as cold-producing medium usually, and trap tube is put into the cold-trap that fills liquid nitrogen or dry ice, under cryogenic conditions, capture; Remove cold-trap after the completion, trap tube is put into heat up desorb operation of desorption instrument.This cryogenic trapping, high temperature desorption mode are because the uncontinuity of operating process is affected the repeatability of sample determination, accuracy.In addition, this action need manual work repeatedly to the moving of object, is difficult for realizing automation mechanized operation, is difficult to satisfy the needs that on-the-spot unmanned detects in real time.
Along with the reach of science, people improve constantly the requirement of all kinds of monitoring instruments such as ecological protection, environment measuring, especially require some instruments can automatic operating, alleviate personnel's work load, and guarantee reliability and accuracy that boat-carrying is analyzed.As on oceanographic survey scientific investigation ship, carrying out traditional purge and trap, desorb operation, will bring great difficulty to operating personnel.Some particular surroundings monitoring instrument needs continuous working incessantly in 24 hours, and traditional scavenging trap can not be competent at.Therefore, for the demanding occasion of sample detection, shipborne system, automaticity in batches, traditional purge and trap-desorption apparatus can't satisfy the needs of real work.
Summary of the invention
The purpose of the utility model is to solve present domestic prior art and design concept defective and the deficiency in this field; A kind of low temperature carrier gas stream cold trapping-thermal desorption device is provided; This device according to high volatile volatile organism needs could capture at cryogenic conditions, the characteristics of enrichment, flow by means of the low temperature carrier gas, make trap tube acquisition low temperature environment; Realize that adsorbent is to the organic effective adsorbing and trapping of high volatile volatile; By means of device for quickly elevating temperature, make trap tube obtain hot environment at short notice, realize organic desorption desorb.The present invention has realized quick cold trapping, thermal desorption-body continued operation, and the ability auto-control captures, desorption temperature, can satisfy the online detection of sample in batches.
The purpose of the utility model is realized by following technical scheme, has developed a kind of low temperature carrier gas stream cold trapping-thermal desorption device, and this device is to separate suction box 1 by capture; Trap tube 2, heating plate 3, temperature sensor 4, three-way diverter valve 1, three-way diverter valve 26, cold-trap insulation can 7, gas cooled pipe 8; Air pump 9; Drying tube 10, gas conduit 1, gas conduit 2 12 constitute, and it is characterized in that: capture is separated trap tube 2, heating plate 3, temperature sensor 4 is installed in the suction box 1; The bottom is provided with cold carrier gas inlet 1c, and top seal covers the access interface that is provided with cold carrier gas outlet 2c, temperature sensor 4 sockets, trap tube 2; Filled with adsorbent in the trap tube 2 is provided with two heating plates 3 outside the pipe, temperature sensor 4 is placed on the isothermal region outside the trap tube 2; Three-way diverter valve 5 one interfaces one 1a is connected with trap tube 2 inlets, and interface two 2a are connected with purging system, and interface three 3a are connected with high-purity carrier gas; Three-way diverter valve 6 two interface I 1b are connected with trap tube 2 outlets, and interface II2b connects the conduit emptying, and interface III3b is connected with detection system; Gas cooled pipe 8 is installed in the cold-trap insulation can 7, and the top is provided with gland bonnet; Gas cooled pipe 8 inlets are connected with drying tube 10, air pump 9 respectively, and outlet gets into to capture from cold carrier gas inlet 1c through gas conduit 1 separates suction box 1, discharges from cold carrier gas outlet 2c, is connected with air pump 9 through gas conduit 2 12.
It is the cube by the aluminium alloy plate roll forming that suction box 1 is separated in described capture; The bottom is provided with a cold carrier gas inflow entrance 1c; The top is provided with a gland bonnet; Gland bonnet is respectively equipped with a cold carrier gas flow export 2c, in the both sides of middle position three mounting holes is set, and the access interface of mounting temperature sensor 4, trap tube 2 is set respectively.
Described trap tube 2 is U-shaped stainless-steel tubes, and long 30～50cm fills in the pipe and captures adsorbent, and temperature sensor 4 places isothermal region.
Described heating plate 3 is a rectangle temperature-sensitive resistance heated sheet, and the edge is provided with the hold-down nut hole, regulates heating-up temperature through temperature sensor 4 and external temp controller.
Described three-way diverter valve 1, three-way diverter valve 26 are the two-position three way reversing solenoid valve, and its commutation function is controlled by Switching Power Supply.
Described cold-trap insulation can 7 is the rolling cube of aluminium alloy plate, the peripheral hardware heat-insulation layer, and interior dress cold-producing medium, top seal are covered with gas cooled pipe 8 gateways, and gas cooled pipe 8 is the long stainless steel gas circuit pipe of 10～12m, and the coiling round is installed in the cold-trap insulation can.
Described air pump 9 is the small air ebullator, is provided with pressure switch and flow controller.
Described drying tube 10 is glass or stainless steel gas body drying tube, and is desiccant-filled in the pipe.
The characteristics and the beneficial effect of the utility model are: cold carrier gas stream is realized low temperature, and device for quickly elevating temperature is realized high temperature, and integrated continued operation realizes the extraction enrichment to low concentration, high volatile volatile organic contaminant in the solution example.
Description of drawings
Fig. 1 is low temperature carrier gas stream cold trapping-thermal desorption device synoptic diagram.
Embodiment
Referring to Fig. 1, the utility model has been developed a kind of low temperature carrier gas stream cold trapping-thermal desorption device, takes following steps:
This device is to separate suction box 1 by capture; Trap tube 2, heating plate 3, temperature sensor 4, three-way diverter valve 1, three-way diverter valve 26, cold-trap insulation can 7, gas cooled pipe 8; Air pump 9; Drying tube 10, gas conduit 1, gas conduit 2 12 constitute, and it is characterized in that: capture is separated trap tube 2, heating plate 3, temperature sensor 4 is installed in the suction box 1; The bottom is provided with cold carrier gas inlet 1c, and top seal covers the access interface that is provided with cold carrier gas outlet 2c, temperature sensor 4 sockets, trap tube 2; Filled with adsorbent in the trap tube 2 is provided with two heating plates 3 outside the pipe, temperature sensor 4 is placed on the isothermal region outside the trap tube 2; Three-way diverter valve 5 one interfaces one 1a is connected with trap tube 2 inlets, and interface two 2a are connected with purging system, and interface three 3a are connected with high-purity carrier gas; Three-way diverter valve 6 two interface I1b are connected with trap tube 2 outlets, and interface II2b connects the conduit emptying, and interface III3b is connected with detection system; Gas cooled pipe 8 is installed in the cold-trap insulation can 7, and the top is provided with gland bonnet; Gas cooled pipe 8 inlets are connected with drying tube 10, air pump 9 respectively, and outlet gets into to capture from cold carrier gas inlet 1c through gas conduit 1 separates suction box 1, discharges from cold carrier gas outlet 2c, is connected with air pump 9 through gas conduit 2 12.
It is the cube by the aluminium alloy plate roll forming that suction box 1 is separated in described capture; The bottom is provided with a cold carrier gas inflow entrance 1c; The top is provided with a gland bonnet; Gland bonnet is respectively equipped with a cold carrier gas flow export 2c, in the both sides of middle position three mounting holes is set, and the access interface of mounting temperature sensor 4, trap tube 2 is set respectively.
Described trap tube 2 is U-shaped stainless-steel tubes, and long 30～50cm fills in the pipe and captures adsorbent, and temperature sensor 4 places isothermal region.
Described heating plate 3 is a rectangle temperature-sensitive resistance heated sheet, and the edge is provided with the hold-down nut hole, regulates heating-up temperature through temperature sensor 4 and external temp controller.
Described three-way diverter valve 1, three-way diverter valve 26 are the two-position three way reversing solenoid valve, and its commutation function is controlled by Switching Power Supply.
Described cold-trap insulation can 7 is the rolling cube of aluminium alloy plate, the peripheral hardware heat-insulation layer, and interior dress cold-producing medium, top seal are covered with gas cooled pipe 8 gateways, and gas cooled pipe 8 is the long stainless steel gas circuit pipe of 10～12m, and the coiling round is installed in the cold-trap insulation can.
Described air pump 9 is the small air ebullator, is provided with pressure switch and flow controller.
Described drying tube 10 is glass or stainless steel gas body drying tube, and is desiccant-filled in the pipe.
In addition, the utility model and not meaning that by synoptic diagram and instructions limits to, and under the prerequisite that does not break away from design aim and principle thereof, can change to some extent.
Claims (8)
1. cold trapping-thermal desorption device is flowed in the low temperature carrier gas; This device is to separate suction box (1), trap tube (2), heating plate (3), temperature sensor (4), three-way diverter valve one (5), three-way diverter valve two (6), cold-trap insulation can (7), gas cooled pipe (8) by capture; Air pump (9); Drying tube (10), gas conduit one (11), gas conduit two (12) constitute, and it is characterized in that: capture is separated trap tube (2), heating plate (3), temperature sensor (4) is installed in the suction box (1); The bottom is provided with cold carrier gas inlet (1c), and top seal covers the access interface that is provided with cold carrier gas outlet (2c), temperature sensor (4) socket, trap tube (2); The interior filled with adsorbent of trap tube (2), outer two heating plates (3) that are provided with of pipe, temperature sensor (4) is placed on the outer isothermal region of trap tube (2); Three-way diverter valve one (5) interface one (1a) is connected with trap tube (2) inlet, and interface two (2a) is connected with purging system, and interface three (3a) is connected with high-purity carrier gas; Three-way diverter valve two (6) interface I (1b) are connected with trap tube (2) outlet, and interface II (2b) connects the conduit emptying, and interface III (3b) is connected with detection system; Gas cooled pipe (8) is installed in the cold-trap insulation can (7), and the top is provided with gland bonnet; Gas cooled pipe (8) inlet is connected with drying tube (10), air pump (9) respectively, and outlet gets into to capture from cold carrier gas inlet (1c) through gas conduit one (11) separates suction box (1), discharges from cold carrier gas outlet (2c), is connected with air pump (9) through gas conduit two (12).
2. low temperature carrier gas stream cold trapping-thermal desorption device according to claim 1; It is characterized in that: it is the cube by the aluminium alloy plate roll forming that suction box (1) is separated in described capture; In the both sides of middle position three mounting holes are set, the access interface of mounting temperature sensor (4), trap tube (2) is set respectively.
3. low temperature carrier gas stream cold trapping-thermal desorption device according to claim 1, it is characterized in that: described trap tube (2) is a U-shaped stainless-steel tube, long 30～50cm.
4. low temperature carrier gas stream cold trapping-thermal desorption device according to claim 1; It is characterized in that: described heating plate (3) is a rectangle temperature-sensitive resistance heated sheet; The edge is provided with the hold-down nut hole, regulates heating-up temperature through temperature sensor (4) and external temp controller.
5. low temperature carrier gas according to claim 1 stream cold trapping-thermal desorption device is characterized in that: described three-way diverter valve one (5), three-way diverter valve two (6) are the two-position three way reversing solenoid valve, and its commutation function is controlled by Switching Power Supply.
6. low temperature carrier gas stream cold trapping-thermal desorption device according to claim 1; It is characterized in that: described cold-trap insulation can (7) is the rolling cube of aluminium alloy plate; Peripheral hardware heat-insulation layer, interior dress cold-producing medium, top seal are covered with gas cooled pipe (8) gateway; Gas cooled pipe (8) is the long stainless steel gas circuit pipe of 10～12m, and the coiling round is installed in the cold-trap insulation can.
7. low temperature carrier gas stream cold trapping-thermal desorption device according to claim 1, it is characterized in that: described air pump (9) is the small air ebullator, is provided with pressure switch and flow controller.
8. low temperature carrier gas stream cold trapping-thermal desorption device according to claim 1, it is characterized in that: described drying tube (10) is glass or stainless steel gas body drying tube, and is desiccant-filled in the pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120074210U CN202141627U (en) | 2011-03-14 | 2011-03-14 | Low-temperature carrier gas cold-trapping and thermal-desorption device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120074210U CN202141627U (en) | 2011-03-14 | 2011-03-14 | Low-temperature carrier gas cold-trapping and thermal-desorption device |
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| CN202141627U true CN202141627U (en) | 2012-02-08 |
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| CN201120074210U Expired - Fee Related CN202141627U (en) | 2011-03-14 | 2011-03-14 | Low-temperature carrier gas cold-trapping and thermal-desorption device |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103926133A (en) * | 2014-04-25 | 2014-07-16 | 广西大学 | Solid-phase extraction method for separating aluminum from trace cadmium, copper and zinc |
| CN105424419A (en) * | 2015-12-22 | 2016-03-23 | 国网河南省电力公司济源供电公司 | SF6 intermediate decomposition product separating unit and use method thereof |
| CN105466756A (en) * | 2015-12-30 | 2016-04-06 | 聚光科技(杭州)股份有限公司 | Adsorption heat desorption device |
| CN105546900A (en) * | 2014-11-03 | 2016-05-04 | 中国科学院大连化学物理研究所 | Heating and water cooling device for adsorption pipes of enrichment-thermal desorption system |
| CN106770962A (en) * | 2016-12-29 | 2017-05-31 | 浙江富春江环保科技研究有限公司 | It is a kind of for dioxin on-line checking except flue gas reclaimed water, the device of sour gas |
| CN110243664A (en) * | 2019-06-24 | 2019-09-17 | 北京大学 | A kind of atmosphere gas phase volatilization/semi-volatile organic matter on-line preconcentration device and application |
| CN112816574A (en) * | 2020-12-30 | 2021-05-18 | 杭州谱育科技发展有限公司 | Device and method for detecting multi-component substance |
| CN114392579A (en) * | 2022-03-24 | 2022-04-26 | 广东盈峰科技有限公司 | Compound anti-condensation icing ultralow-temperature enrichment module |
| CN115791358A (en) * | 2023-02-06 | 2023-03-14 | 北京鹏宇昌亚环保科技有限公司 | VOCs trapping device |
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2011
- 2011-03-14 CN CN201120074210U patent/CN202141627U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103926133A (en) * | 2014-04-25 | 2014-07-16 | 广西大学 | Solid-phase extraction method for separating aluminum from trace cadmium, copper and zinc |
| CN103926133B (en) * | 2014-04-25 | 2016-07-06 | 广西大学 | A kind of solid phase extraction that aluminum is separated with Determination of Trace Amount Cadmium, copper, zinc |
| CN105546900A (en) * | 2014-11-03 | 2016-05-04 | 中国科学院大连化学物理研究所 | Heating and water cooling device for adsorption pipes of enrichment-thermal desorption system |
| CN105424419A (en) * | 2015-12-22 | 2016-03-23 | 国网河南省电力公司济源供电公司 | SF6 intermediate decomposition product separating unit and use method thereof |
| CN105466756A (en) * | 2015-12-30 | 2016-04-06 | 聚光科技(杭州)股份有限公司 | Adsorption heat desorption device |
| CN106770962A (en) * | 2016-12-29 | 2017-05-31 | 浙江富春江环保科技研究有限公司 | It is a kind of for dioxin on-line checking except flue gas reclaimed water, the device of sour gas |
| CN110243664A (en) * | 2019-06-24 | 2019-09-17 | 北京大学 | A kind of atmosphere gas phase volatilization/semi-volatile organic matter on-line preconcentration device and application |
| CN110243664B (en) * | 2019-06-24 | 2020-09-08 | 北京大学 | Online enrichment device and application of atmospheric gas phase volatile/semi-volatile organic compounds |
| CN112816574A (en) * | 2020-12-30 | 2021-05-18 | 杭州谱育科技发展有限公司 | Device and method for detecting multi-component substance |
| CN112816574B (en) * | 2020-12-30 | 2022-08-02 | 杭州谱育科技发展有限公司 | Device and method for detecting multi-component substance |
| CN114392579A (en) * | 2022-03-24 | 2022-04-26 | 广东盈峰科技有限公司 | Compound anti-condensation icing ultralow-temperature enrichment module |
| CN115791358A (en) * | 2023-02-06 | 2023-03-14 | 北京鹏宇昌亚环保科技有限公司 | VOCs trapping device |
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Granted publication date: 20120208 Termination date: 20130314 |