CN211375453U - Environmental control platform for volatile sample analysis - Google Patents
Environmental control platform for volatile sample analysis Download PDFInfo
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- CN211375453U CN211375453U CN202020374874.4U CN202020374874U CN211375453U CN 211375453 U CN211375453 U CN 211375453U CN 202020374874 U CN202020374874 U CN 202020374874U CN 211375453 U CN211375453 U CN 211375453U
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Abstract
The utility model provides an environment control platform for volatile sample analysis, which comprises a fume hood and a closed chamber, wherein the fume hood is hermetically connected to one side of the closed chamber and communicated with the closed chamber; the device also comprises an air supply system and a control system; the air supply system comprises a dew point instrument, an air supply pipeline, an air inlet and an air outlet, wherein the air inlet is arranged in the closed chamber, the dew point instrument is arranged on the air supply pipeline, and the air supply pipeline is communicated to the air inlet; the exhaust port is arranged on the fume hood; the control system comprises a controller, a pressure sensor, a hygrometer and an oxygen sensor, wherein the pressure sensor, the hygrometer and the oxygen sensor are in communication connection with the controller and are arranged in the fume hood and/or the closed room. Through setting up fume hood and closed chamber to form a confined analysis and detection space, then through air supply system and control system, input the controllable gas of composition, and detect gaseous composition in real time in order to satisfy operating personnel's demand, and solved the problem of air circumstance interference.
Description
Technical Field
The utility model belongs to the technical field of chemical industry check out test set, specificly relate to a control environment influences, environmental control platform is used in volatile sample analysis.
Background
In chemical production, the moisture content in materials needs to be accurately analyzed and strictly controlled to ensure the quality of products. For example, samples in all links of a PVC production process by a gulf chemical chlor-alkali-ethylene method almost have strict requirements on water content, and the existence of water in materials containing hydrogen chloride and the existence of water in the materials in a plurality of links of the PVC by an ethylene oxychlorination equilibrium method can accelerate the corrosion of equipment and even influence the quality of products.
The laboratory generally adopts Karl Fischer water analysis of Mettler to analyze the water content (5-50ppm) in vinyl chloride and 1, 2-dichloroethane, but the requirement of a moisture meter for measuring trace water on the environmental humidity is extremely high, and the requirement is controlled below 50%. Meanwhile, vinyl chloride and 1, 2-dichloroethane are volatile organic compounds, so that the ventilation requirement is extremely high, and the influence of environmental variables is difficult to eliminate, for example, the bay chemical industry park is at the seaside, and the air humidity is 90% on average in summer, so that the accuracy of sample analysis is influenced.
Therefore, an experimental environment control platform is needed, which not only meets the requirements of strong ventilation replacement, but also solves the problem of eliminating air environment interference.
Disclosure of Invention
The utility model aims at providing a volatile sample is environmental control platform for analysis to solve the problem of volatile sample analysis environmental disturbance.
The specific scheme is as follows: an environment control platform for analyzing a volatile sample comprises a fume hood and a closed chamber, wherein the fume hood is hermetically connected to one side of the closed chamber and is communicated with the closed chamber; the device also comprises an air supply system and a control system;
the air supply system comprises a dew point instrument, an air supply pipeline, an air inlet and an air outlet, wherein the air inlet is arranged in the closed chamber, the dew point instrument is arranged on the air supply pipeline, and the air supply pipeline is communicated to the air inlet; the exhaust port is arranged on the fume hood;
the control system comprises a controller, a pressure sensor, a hygrometer and an oxygen sensor, wherein the pressure sensor, the hygrometer and the oxygen sensor are in communication connection with the controller and are arranged in the fume hood and/or the closed room.
The utility model discloses a further technical scheme does: the air supply pipeline is communicated to an air separation plant pipeline or a nitrogen-oxygen binary mixed air source.
The utility model discloses a further technical scheme does: the air supply pipeline is communicated to a drying system and communicated with the atmosphere through the drying system; the drying system comprises an air pump and an air drying device which are communicated through pipelines.
The utility model discloses a further technical scheme does: the exhaust port of the fume hood is also provided with an exhaust fan, the air inlet is provided with an air supply valve, and the exhaust fan and the air supply valve are both in communication connection with the controller; the two pressure sensors are respectively arranged in the fume hood and the closed chamber.
The utility model discloses a further technical scheme does: the fume hood comprises an operation table top and a table top cover covering the operation table top, wherein a window part is arranged at one end of the table top cover facing the closed chamber; the closed chamber comprises a rectangular frame connected to the fume hood, and a glass wall surface and a sealing door are arranged on the rectangular frame.
The utility model discloses a further technical scheme does: a waste liquid pool is arranged on the operation table board, and a stop valve is arranged on a drain pipe of the waste liquid pool.
The utility model discloses a further technical scheme does: the window part is also provided with a telescopic glass baffle plate for adjusting the size of the window part.
The utility model discloses a further technical scheme does: the air inlets are arranged at intervals in the area of the bottom surface of the closed chamber, which is far away from one end of the fume hood.
Has the advantages that: the environment control platform for analyzing the volatile sample comprises a fume hood and a closed chamber, wherein the fume hood is hermetically connected to one side of the closed chamber and is communicated with the closed chamber; the device also comprises an air supply system and a control system; the air supply system comprises a dew point instrument, an air supply pipeline, an air inlet and an air outlet, wherein the air inlet is arranged in the closed chamber, the dew point instrument is arranged on the air supply pipeline, and the air supply pipeline is communicated to the air inlet; the exhaust port is arranged on the fume hood; the control system comprises a controller, a pressure sensor, a hygrometer and an oxygen sensor, wherein the pressure sensor, the hygrometer and the oxygen sensor are in communication connection with the controller and are arranged in the fume hood and/or the closed room. Through setting up fume hood and closed chamber to form a confined analysis detection space, then through air supply system and control system, input the controllable gas of composition, and the gaseous composition of real-time detection has realized the replacement of strong draft in order to satisfy the operating personnel demand, and has solved the problem of air circumstance interference.
Drawings
Fig. 1 shows a schematic structural diagram of an embodiment of the present invention.
Detailed Description
To further illustrate the embodiments, the present invention provides the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the embodiments. With these references, one of ordinary skill in the art will appreciate other possible embodiments and advantages of the present invention. Elements in the figures are not drawn to scale and like reference numerals are generally used to indicate like elements.
The present invention will now be further described with reference to the accompanying drawings and detailed description.
An environment control platform for analyzing volatile samples comprises a fume hood 2 and a closed chamber 6, wherein the fume hood 2 is hermetically connected to one side of the closed chamber 6 and is communicated with the closed chamber.
In this embodiment, the fume hood 2 is a rectangular parallelepiped structure, which is specific to: the fume hood 2 comprises an operating table top 4 and a table top cover 41 covering the operating table top 4, the operating table top is made of a plastic material with strong water resistance and corrosion resistance and is used for placing a Karl Fischer moisture meter; meanwhile, a waste liquid tank 7 is arranged on the operation table top 4, and a stop valve (not visible in the figure) is arranged on a drain pipe at the bottom of the waste liquid tank 7 so as to prevent external water vapor from entering the fume hood 2. The table top cover 41 is a casing covering the top of the operation table top 4 in a sealing manner, and at the same time, a window part which is distributed transversely is arranged at one end of the table top cover 41 facing the closed chamber 6, so that the communication with the closed chamber is realized.
The closed chamber 6 is also of a cuboid structure and comprises a rectangular frame connected to one side surface of the fume hood 2, a plurality of surfaces of the rectangular frame are provided with glass wall surfaces, and one side surface is provided with a sealing door capable of being opened and closed; the airtight space formed by the fume hood 2 and the airtight chamber 6, the joint of each component of the fume hood 2, the splicing part of the fume hood 2 and the airtight chamber 6 and the sealing treatment of each part of the airtight chamber 6 main body are sealed by measures such as sealant and the like.
Meanwhile, the upper end of the table top cover 41 of the fume hood is provided with an exhaust pipe 1, and a telescopic glass baffle is further arranged on the window part to adjust the size of a communication area between the window part and the closed chamber 6.
The embodiment also comprises an air supply system and a control system.
The air supply system comprises a dew point hygrometer, an air supply pipeline 51, an air inlet 8 and an air outlet, in this embodiment, the air inlet 8 is arranged in the closed chamber 6, and preferably, a plurality of air inlets 8 are arranged on the bottom surface of the closed chamber 6 at intervals in the area away from one end of the fume hood 2, so as to supply air to the whole platform; of course, an air supply valve is provided at the position of the air inlet 8 for electrically adjusting the amount of the inlet air flow of the air inlet 8. The exhaust port of the fume hood 2 is disposed at the bottom of the exhaust pipe 1, and an exhaust fan is further disposed at the exhaust port for exhausting air to form a negative pressure.
The end of the air supply pipeline 51, which is far away from the air inlet 8, is also communicated to the drying system 5 and communicated with the atmosphere through the drying system; in this embodiment, this drying system comprises centrifugal fan pump and gas drying device, and the two pipeline intercommunication specifically can be directly linked together through the pipe, can also be that the plum is happy fan locates inside the casing of gas drying device to communicate through the casing pipeline, and then realize the air feed to the sealed chamber. The dew point instrument is arranged on the gas supply pipeline 51, the gas supply pipeline 51 is communicated to the gas inlet 8, and gas of a gas source is supplied to the system through the gas outlet in the closed chamber 6 after being analyzed and qualified by the dew point instrument.
Of course, in other embodiments, the air supply pipeline 51 may also be connected to an air separation plant pipeline or a binary mixed nitrogen-oxygen gas source, and the air supply to the closed chamber may also be realized.
The control system comprises a controller 3, a pressure sensor, a humidity sensor and an oxygen sensor which are in communication connection with the controller 3, wherein the humidity sensor and the oxygen sensor are integrated on the controller 3 and are arranged in a closed chamber 6 to collect air humidity data and oxygen data for safety monitoring; the two pressure sensors are respectively arranged in the fume hood 2 and the closed chamber 6, meanwhile, the exhaust fan and the air supply valve are in communication connection with the controller 3, and the controller 3 controls the exhaust fan and the air supply valve to ensure that the air pressure of the closed chamber 6 is slightly positive and the air pressure of the fume hood 2 is slightly negative.
The controller 3 may also integrate a display screen and control panel for integrating the display and control of temperature, humidity, flow rate, oxygen content, fume hood and pressure in the enclosed chamber 6. The differential pressure between the inside and outside of the fume hood and enclosure is adjusted by adjusting the supply air blower, and the supply duct valves, based on the baroreceptor data of the fume hood 2 and enclosure 6. And judging the control effect and progress according to the hygrometer data, wherein the oxygen content index is a safety index, and the normal oxygen content of the air source in the closed environment is ensured.
The application method of the environmental control platform for volatile sample analysis in this embodiment is as follows:
1, putting an instrument and a sample into a fume hood 2, and allowing personnel to enter a closed chamber 6; 2, opening an air inlet source of the closed chamber 6, and measuring the oxygen content and the dew point of the air source if necessary; 3, opening an exhaust fan of the fume hood, closing a sealing door, and controlling the internal and external pressure difference and the air flow rate of the fume hood as required; and 4, after the humidity in the system environment is reduced to 50%, carrying out trace water analysis experiment operation on the volatile toxic gas.
While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. An environment control platform for analyzing a volatile sample comprises a fume hood and a closed chamber, wherein the fume hood is hermetically connected to one side of the closed chamber and is communicated with the closed chamber; the method is characterized in that: the device also comprises an air supply system and a control system;
the air supply system comprises a dew point instrument, an air supply pipeline, an air inlet and an air outlet, wherein the air inlet is arranged in the closed chamber, the dew point instrument is arranged on the air supply pipeline, and the air supply pipeline is communicated to the air inlet; the exhaust port is arranged on the fume hood;
the control system comprises a controller, a pressure sensor, a hygrometer and an oxygen sensor, wherein the pressure sensor, the hygrometer and the oxygen sensor are in communication connection with the controller and are arranged in the fume hood and/or the closed room.
2. The environmental control platform for volatile sample analysis according to claim 1, wherein: the air supply pipeline is communicated to an air separation plant pipeline or a nitrogen-oxygen binary mixed air source.
3. The environmental control platform for volatile sample analysis according to claim 1, wherein: the air supply pipeline is communicated to a drying system and communicated with the atmosphere through the drying system; the drying system comprises an air pump and an air drying device which are communicated through pipelines.
4. The environmental control platform for volatile sample analysis according to claim 1, wherein: the exhaust port of the fume hood is also provided with an exhaust fan, the air inlet is provided with an air supply valve, and the exhaust fan and the air supply valve are both in communication connection with the controller; the two pressure sensors are respectively arranged in the fume hood and the closed chamber.
5. The environmental control platform for volatile sample analysis according to claim 1, wherein: the fume hood comprises an operation table top and a table top cover covering the operation table top, wherein a window part is arranged at one end of the table top cover facing the closed chamber; the closed chamber comprises a rectangular frame connected to the fume hood, and a glass wall surface and a sealing door are arranged on the rectangular frame.
6. The environmental control platform for volatile sample analysis according to claim 5, wherein: a waste liquid pool is arranged on the operation table board, and a stop valve is arranged on a drain pipe of the waste liquid pool.
7. The environmental control platform for volatile sample analysis according to claim 5, wherein: the window part is also provided with a telescopic glass baffle plate for adjusting the size of the window part.
8. The environmental control platform for volatile sample analysis according to claim 5, wherein: the air inlets are arranged at intervals in the area of the bottom surface of the closed chamber, which is far away from one end of the fume hood.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020374874.4U CN211375453U (en) | 2020-03-23 | 2020-03-23 | Environmental control platform for volatile sample analysis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020374874.4U CN211375453U (en) | 2020-03-23 | 2020-03-23 | Environmental control platform for volatile sample analysis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211375453U true CN211375453U (en) | 2020-08-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020374874.4U Active CN211375453U (en) | 2020-03-23 | 2020-03-23 | Environmental control platform for volatile sample analysis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211375453U (en) |
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2020
- 2020-03-23 CN CN202020374874.4U patent/CN211375453U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220510 Address after: 266000 No.66 Gangfeng Road, Boli Town, Huangdao District, Qingdao City, Shandong Province Patentee after: QINGDAO HAIWAN CHEMICAL Co.,Ltd. Address before: 266000 No.66 Gangfeng Road, Boli Town, Huangdao District, Qingdao City, Shandong Province Patentee before: QINGDAO HAIWAN CHEMICAL Co.,Ltd. Patentee before: QINGDAO HAIWAN GROUP CO.,LTD. |
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| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 266400 No. 66, Gangfeng Road, Boli Town, Huangdao District, Qingdao, Shandong Patentee after: Qingdao Gulf Chemical Co.,Ltd. Address before: 266000 No.66 Gangfeng Road, Boli Town, Huangdao District, Qingdao City, Shandong Province Patentee before: QINGDAO HAIWAN CHEMICAL Co.,Ltd. |