CN211505186U

CN211505186U - Multi-channel vaporization detection platform

Info

Publication number: CN211505186U
Application number: CN201922034493.1U
Authority: CN
Inventors: 张光辉; 辛登松; 昌桂元
Original assignee: Beijing Pri Eco Technology Co ltd
Current assignee: Beijing Pri Eco Technology Co ltd
Priority date: 2019-11-22
Filing date: 2019-11-22
Publication date: 2020-09-15
Anticipated expiration: 2029-11-22

Abstract

The utility model discloses a multichannel vaporization testing platform, including two vaporization passageways, be first vaporization passageway, second vaporization passageway respectively, first vaporization passageway includes first vaporizer, the second vaporizer includes the second vaporizer, still include with the desicator that first vaporizer and second vaporizer connect, first vaporizer and second vaporizer all link to each other with gas analysis device, gas analysis device and desicator link to each other. The utility model discloses a multichannel vaporization testing platform, through setting up a plurality of vaporization passageways, when one of them passageway is measuring, another one passageway is sweeping and static balance etc. very big shortening survey appearance time.

Description

Multi-channel vaporization detection platform

Technical Field

The utility model relates to a testing platform especially relates to a multichannel vaporization testing platform.

Background

Currently, the sample that can be detected by the concentration and isotope ratio analysis equipment commonly available on the market is a gas sample. For testing of liquid samples, a vaporization platform is required to vaporize the sample, converting it to a gaseous sample for testing, as opposed to the analytical technique used. The existing vaporization platform and vaporization method for processing liquid samples cannot provide better pretreatment samples for an analysis test instrument, and further can influence the accuracy of detection results. Such as isotope ratio measurements of water.

The measurement of hydrogen-oxygen isotope ratio in liquid and water vapor has good application in environmental monitoring, biomedical diagnosis and other industrial, medical and environmental research fields. Since the sample that can be detected by the hydrogen-oxygen isotope ratio analysis apparatus in water is in a gaseous state, it is necessary to convert the sample into a gas and then detect the gas by the hydrogen-oxygen isotope ratio analysis apparatus in water. Isotope ratio analysis is very precise analysis, so the process of converting a liquid sample into gas has a severe requirement, and the gas obtained by the conventional vaporization platform and the vaporization method cannot meet the detection standard of a later analysis instrument. The detection of the hydrogen-oxygen isotope ratio in water requires that 100 percent of liquid water is converted into water vapor and the water vapor is completely transmitted to an analyzer for detection, or part of the water vapor is detected after being uniformly mixed. If a certain amount of liquid water is evaporated over a period of time, the isotopic content of the water vapour will change over time. If the evaporation is incomplete and the liquid remains at the end of a certain time, the isotope content in the entire water vapour may differ from the original liquid and the remaining liquid, for example due to temperature dependent fractionation during evaporation, etc., resulting in a non-uniform way of entering the evaporated liquid sample into the analyzer, in which case the following procedure is required: a) the total vapor amount must be analyzed; b) during the gas flow, the concentration, isotope ratio and flow rate are each measured (or precisely controlled) as a function of time; c) the determined isotope ratio is calculated by multiplying the measured gas isotope ratio by the concentration and flow rate. The above steps a-c result in complexity and inaccuracy in the determination of the liquid isotope ratio, require additional measurements or controls (e.g. flow rate) and introduce additional complexity and sources of error which cause inconvenience to the analysis of the sample.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to provide a multichannel vaporization platform, which adopts at least two vaporization channels to start detection simultaneously and shortens the sample analysis time.

The purpose of the utility model is realized by adopting the following technical scheme:

a multi-channel vaporization detection platform includes at least two vaporization channels.

The device further comprises two vaporization channels which are respectively a first vaporization channel and a second vaporization channel, wherein the first vaporization channel comprises a first vaporization chamber, the second vaporization channel comprises a second vaporization chamber, the device further comprises a dryer connected with the first vaporization chamber and the second vaporization chamber, the first vaporization chamber and the second vaporization chamber are connected with a gas analysis device, and the gas analysis device is connected with the dryer.

The device further comprises a vacuum pump, a first filter is further arranged between the first vaporizing chamber and the gas analysis device, a second filter is further arranged between the second vaporizing chamber and the gas analysis device, and the first filter and the second filter are both connected with the vacuum pump.

Further, a first control device is arranged between the dryer and the first vaporizing chamber, a third control device is arranged between the first vaporizing chamber and the first filter, a fifth control device is arranged between the first filter and the vacuum pump, a second control device is arranged between the second vaporizing chamber and the dryer, a fourth control device is arranged between the second vaporizing chamber and the second filter, and a sixth control device is arranged between the second filter and the vacuum pump.

Furthermore, a seventh control device is arranged between the first filter, the second filter and the gas analysis device, the seventh control device is respectively connected with the fifth control device and the sixth control device, and the seventh control device is connected with the dryer.

Furthermore, a first communication device is arranged among the first control device, the second control device and the dryer, a second communication device is arranged among the fifth control device, the sixth control device and the vacuum pump, and the fifth control device and the sixth control device are connected with the seventh control device through a third communication device. The dryer is characterized in that a fourth communication device is arranged between the dryer and the gas analysis device, an eighth control device and an air supply device are further arranged between the fourth communication device and the gas analysis device, the eighth control device is respectively connected with the air supply device and the seventh control device, and the first communication device is connected with the fourth communication device.

Further, the first control device, the second control device, the third control device and the fourth control device are all two-way solenoid valves, the fifth control device, the sixth control device, the seventh control device and the eighth control device are all two-position three-way solenoid valves, and the first communication device, the second communication device, the third communication device and the fourth communication device are all three-way joints.

Furthermore, all be equipped with sampling device on first vaporizer and the second vaporizer, sampling device includes the introduction port, is located the introduction port's a kind diaphragm, passes the syringe needle of introduction diaphragm, still be equipped with porous screen in the introduction port.

Further, the outer side walls of the first gasification chamber and the second gasification chamber are provided with temperature control devices.

Further, the gas analysis device is one of a spectrometer, a cavity ring-down spectrometer and a cavity enhanced absorption spectrometer. Other gas analysis devices may also be selected as desired.

Compared with the prior art, the beneficial effects of the utility model reside in that: the utility model discloses a multichannel vaporization testing platform, through setting up a plurality of vaporization passageways, when one of them passageway is measuring, another one passageway is sweeping and static balance etc. very big shortening survey appearance time.

Drawings

Fig. 1 is a schematic structural view of a multi-channel vaporization platform according to embodiment 1 of the present invention;

in the figure: 1. a first vaporization chamber; 2. a first filter; 3. a first control device; 4. a third control device; 5. a fifth control device; 6. a second vaporization chamber; 7. a second filter; 8. a second control device; 9. a fourth control device; 10. a sixth control device; 11. a first communication device; 12. a second communication means; 13. a third communication device; 14. a fourth communication device; 15. a dryer; 16. an air supply device; 17. a vacuum pump; 18. a temperature control device; 19. a seventh control device; 20. an eighth control device; 21. a gas analysis device; 22. a sample introduction device; 222. a sample introduction diaphragm; 223. a sample injection needle; 224. a porous screen.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict.

Example 1

A multi-channel vaporization detection platform comprising at least two vaporization channels, as shown in fig. 1: the arrows in the figure indicate the direction of flow of the sample or gas. The two vaporization passages are respectively a first vaporization passage and a second vaporization passage in the present embodiment, the first vaporization passage comprises a first vaporization chamber 1, a first filter 2 and a second vaporization chamber 6 which are sequentially arranged, the second vaporization chamber 6 and the second filter 7 are sequentially arranged, preferably, the first filter 2 and the second filter 7 are stainless steel sintered filters, and the cleanliness of the gas entering the gas analysis device 21 is ensured. The first vaporization chamber 1 and the second vaporization chamber 6 are communicated with a dryer 15 for supplying nitrogen or zero air. The first filter 2 and the second filter 7 are connected to a gas analyzing device 21, and the gas analyzing device 21 is connected to the dryer 15 and the air supply device 16, respectively. The preferred gas analysis device 21 is one of a spectrometer, a cavity ring down spectrometer, a cavity enhanced absorption spectrometer. Other gas analysis devices 21 may also be selected as desired. The first filter 2 and the second filter 7 are also connected with a vacuum pump 17, and the maximum vacuum degree which can be provided by the vacuum pump 17 is less than 1torr, so that the first gasification chamber 1 and the second gasification chamber 6 can be vacuumized conveniently.

A first control device 3 is arranged between the dryer 15 and the first vaporizing chamber 1, a third control device 4 is arranged between the first vaporizing chamber 1 and the first filter 2, a fifth control device 5 is arranged between the first filter 2 and the vacuum pump 17, a second control device 8 is arranged between the second vaporizing chamber 6 and the dryer 15, a fourth control device 9 is arranged between the second vaporizing chamber 6 and the second filter 7, and a sixth control device 10 is arranged between the second filter 7 and the vacuum pump 17. A seventh control device 19 is arranged between the first filter 2, the second filter 7 and the gas analysis device 21, the seventh control device 19 is connected with the fifth control device 5 and the sixth control device 10 respectively, and the seventh control device is connected with the dryer 15.

The first control device 3 and the second control device 8 are connected to the dryer 15 via a first communication device 11, the fifth control device 5 and the sixth control device 10 are connected to the vacuum pump 17 via a second communication device 12, and the fifth and sixth control devices 10 are connected to the seventh control device 19 via a third communication device 13. The dryer 15 is connected with the gas analysis device 21 through the fourth communication device 14, an eighth control device 20 is further arranged between the fourth communication device 14 and the gas analysis device 21, the eighth control device 20 is respectively connected with the seventh control device 19 and the air supply device 16, and the first communication device 11 is connected with the fourth communication device 14.

Preferably, the first control device 3, the second control device 8, the third control device 4, and the fourth control device 9 are all two-way solenoid valves, which are opened to allow gas to pass therethrough when energized, and closed to prevent gas from passing therethrough when de-energized. The fifth control device 5, the sixth control device 10, the seventh control device 19, and the eighth control device 20 are all two-position three-way solenoid valves, and when the two-position three-way solenoid valves are energized, the two-position three-way solenoid valves indicate that gas passes through between the interface a and the interface B, and when the two-position three-way solenoid valves are not energized, the two-position three-way solenoid valves indicate that gas passes through between the interface C and the interface B. The first communication device 11, the second communication device 12, the third communication device 13 and the fourth communication device 14 are all three-way joints. The control device is not limited to the above listed valve types, and those skilled in the art may select other devices capable of implementing air path control according to the needs.

The first vaporizing chamber 1 and the second vaporizing chamber 6 are both provided with a sample injection device 22, the sample injection device 22 comprises a sample injection membrane 222 located at a sample injection port, a sample injection needle 223 penetrating through the sample injection membrane 222, and a porous screen 224 arranged in the sample injection port and used for adsorbing salt in a sample. Specifically, the injection can be performed by an automatic injection needle or manually.

The outer side walls of the first vaporizing chamber 1 and the second vaporizing chamber 6 are provided with temperature control devices 18, and the vaporizing temperature of the sample is reached in the measuring process. Preferably, the temperature control device 18 comprises a heating control module and a temperature sensor (not shown in the figure, and those skilled in the art can set according to the prior art), the temperature of the vaporization chamber is adjusted by the temperature control device 18, and the temperature of the vaporization chamber is kept within a stable range, and preferably, the shell of the first vaporization chamber 1 and the shell of the second vaporization chamber 6 are provided with heat insulation layers, and the other parts of the vaporization platform can be provided with heat insulation layers, so that the fluctuation range of the temperature is reduced, and the detection accuracy is ensured. The material of the first vaporizing chamber 1 and the second vaporizing chamber 6 is preferably corundum with the purity of more than 99 percent, or other materials with smooth and clean weakly-adsorption antirust surfaces are selected. The present embodiment is designed as a dual-channel vaporizing chamber, but is not limited thereto, and a three-channel vaporizing chamber can be used for cycle testing, or more channels can be used, depending on the size of the sample amount and the requirement for the measurement time.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.

Claims

1. The utility model provides a multichannel vaporization testing platform, its characterized in that includes two vaporization passageways, is first vaporization passageway, second vaporization passageway respectively, first vaporization passageway includes first vaporizer, the second vaporization passageway includes the second vaporizer, still include with the desicator that first vaporizer and second vaporizer are connected, first vaporizer and second vaporizer all link to each other with gas analysis device, gas analysis device and desicator link to each other.

2. The multi-channel vaporization detection platform of claim 1, further comprising a vacuum pump, wherein a first filter is disposed between the first vaporization chamber and the gas analysis device, a second filter is disposed between the second vaporization chamber and the gas analysis device, and the first filter and the second filter are both connected to the vacuum pump.

3. The multi-channel vaporization detection platform of claim 2, wherein a first control device is disposed between the dryer and the first vaporization chamber, a third control device is disposed between the first vaporization chamber and the first filter, a fifth control device is disposed between the first filter and the vacuum pump, a second control device is disposed between the second vaporization chamber and the dryer, a fourth control device is disposed between the second vaporization chamber and the second filter, and a sixth control device is disposed between the second filter and the vacuum pump.

4. The multi-channel vaporization detection platform of claim 3, wherein a seventh control device is disposed between the first filter, the second filter and the gas analysis device, the seventh control device is connected to the fifth control device and the sixth control device, and the seventh control device is connected to the dryer.

5. The multi-channel vaporization detection platform according to claim 4, wherein a first communication device is arranged between the first control device, the second control device and the dryer, a second communication device is arranged between the fifth control device, the sixth control device and the vacuum pump, the fifth control device and the sixth control device are connected through a third communication device and a seventh control device, a fourth communication device is arranged between the dryer and the gas analysis device, an eighth control device and an air supply device are further arranged between the fourth communication device and the gas analysis device, the eighth control device is respectively connected with the air supply device and the seventh control device, and the first communication device is connected with the fourth communication device.

6. The multi-channel vaporization detection platform of claim 5, wherein the first control device, the second control device, the third control device, and the fourth control device are all two-way solenoid valves, the fifth control device, the sixth control device, the seventh control device, and the eighth control device are all two-position three-way solenoid valves, and the first communication device, the second communication device, the third communication device, and the fourth communication device are all three-way connectors.

7. The multi-channel vaporization detection platform according to claim 1, wherein the first vaporization chamber and the second vaporization chamber are both provided with a sample injection device, the sample injection device comprises a sample injection port, a sample injection membrane located at the sample injection port, and a sample injection needle penetrating through the sample injection membrane, and a porous screen is further provided in the sample injection port.