CN217887894U - Air distribution device - Google Patents
Air distribution device Download PDFInfo
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- CN217887894U CN217887894U CN202221234308.9U CN202221234308U CN217887894U CN 217887894 U CN217887894 U CN 217887894U CN 202221234308 U CN202221234308 U CN 202221234308U CN 217887894 U CN217887894 U CN 217887894U
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Abstract
The utility model discloses a gas distribution device, wherein, the gas sampling pipeline is connected between the gas source and the reactor, each gas sampling pipeline is provided with a solenoid electric valve and a mass flow controller, the gas sampling pipeline is connected between the sampling pump and the sampling device, the gas cleaning pipeline and the gas collecting pipeline are respectively connected with the reactor, the liquid sampling pipeline is connected between the liquid sampling devices, the front and back cleaning pipelines are respectively used for cleaning the pipeline before and after gas sampling, the humidifying pipeline is used for changing the humidity of the gas environment, and the cleaning pipeline is used for cleaning the gas environment; the temperature and humidity sensor and the differential pressure sensor are arranged in the reactor and are connected with the PLC. Through the technical scheme of the utility model, can solve the pipeline gas and remain and the reactor in the humiture adjust the problem, improve complexity and the security of admitting air, realize automatic pressure protection.
Description
Technical Field
The utility model relates to a gaseous configuration technical field especially relates to a distribution device.
Background
In the technical field of scientific research, and in the related experimental process of various gases, the synchronism and accuracy of the sample introduction of various gases play an important role in the research of scientific experiments.
In the past, the traditional sample introduction mode is mostly single gas and enters the reactor after passing through the regulation of a mass flow controller after the pressure reducing valve, if the sample introduction of various gases is needed, a plurality of mass flow controllers can appear, so that the time and cost are wasted, the cost is high, and the timeliness of the reaction sample gas can not be realized. For example, carbon monoxide, nitric oxide, sulfur dioxide, propylene and the like are required to be introduced at the same time, each gas is introduced one by using a traditional method and recorded, and different experimental results can be generated due to timeliness after the final sample introduction is finished. Thus experimental data cannot be relied upon reliably.
SUMMERY OF THE UTILITY MODEL
To the above problem, the utility model provides a distributing device carries out independent high accuracy control through advancing kind pipeline solenoid electric valve to each way gas, realizes the switching between different work condition and the technology, can solve the gaseous residual problem of back pipeline before advancing kind, through the coordination between PLC controller and multiple function pipeline and the sensor, can solve the complexity and the security problem of admitting air in the experimentation, can solve reactor automatic pressure protection problem.
In order to achieve the above object, the utility model provides a distribution device, include: the device comprises a gas sample introduction pipeline, an electromagnetic control valve, a mass flow controller, a gas sampling pipeline, a gas cleaning pipeline, a gas collecting pipeline, a liquid sample introduction device, a front cleaning pipeline, a rear cleaning pipeline, a humidifying pipeline, a cleaning pipeline, a sampling pump, a PLC (programmable logic controller), a temperature and humidity sensor and a differential pressure sensor;
the gas sample introduction pipeline is connected between a gas source and the reactor, each gas sample introduction pipeline is provided with the electromagnetic control valve for switching gas circuit functions, and each gas sample introduction pipeline is also provided with the mass flow controller which is connected with the PLC and used for controlling the sample introduction flow of gas;
the gas sampling pipeline is connected between the sampling pump and the sampling device, and the sampling pump is connected with the PLC;
the gas cleaning pipeline and the gas collecting pipeline are respectively connected with the reactor, the gas cleaning pipeline is used for discharging gas in the reactor and the pipeline, and the gas collecting pipeline is used for collecting unnecessary gas;
the liquid sample introduction pipeline is connected between a liquid sample source and the liquid sample introduction device and is used for independently introducing a liquid sample;
the front cleaning pipeline and the rear cleaning pipeline are used for cleaning the pipelines by gas sample introduction, the humidifying pipeline is used for changing the humidity of a gas environment, and the cleaning pipelines are used for cleaning the gas sample introduction environment;
the temperature and humidity sensor and the differential pressure sensor are arranged in the reactor and are connected with the PLC.
In the above technical scheme, preferably, the gas sample introduction pipeline is a multi-path gas parallel sample introduction structure, the sample introduction connection part of each branch is separately provided with the electromagnetic control valve, and a pipeline connected with the electromagnetic control valve adopts a BA-grade stainless steel pipe.
In the above technical solution, preferably, the liquid sample introduction device has a liquid sample independent sample introduction function, the liquid sample introduction device has a flow and efficiency adjustment function, and the liquid sample introduction device can be used as an independent component.
In the above technical solution, preferably, the humidifying pipeline and the cleaning pipeline are BA-grade stainless steel pipes and are connected to the mass flow controller.
In the above technical solution, preferably, the gas collection pipeline is provided with a filtration processing device, and the gas collection pipeline is connected to the gas sample injection pipeline, the cleaning pipeline and the humidification pipeline.
In the above technical solution, preferably, the humidification pipeline adopts an independent bubbling humidification mode.
In the above technical solution, preferably, the differential pressure sensor detects a pressure difference between the inside of the reactor and an external environment, and transmits a detection signal to the PLC controller.
In the above technical solution, preferably, the humidification pipeline and the cleaning pipeline with the gas sampling pipeline are set to be in an interlocking relationship, so that the gas sampling process and the humidification or cleaning process of the gas sampling pipeline cannot work simultaneously.
In the above technical solution, preferably, the gas distribution device further includes a human-machine interface, and the human-machine interface is connected to the PLC controller and is used for displaying parameters and setting parameters.
In the above technical solution, preferably, the mass flow controller and the electromagnetic control valve are connected through a plurality of pipelines, and a pressure reducing adjustment valve is disposed between the electromagnetic control valve and the air source and used for adjusting the intake pressure.
Compared with the prior art, the beneficial effects of the utility model are that: through carrying out independent high accuracy control to each way gas sampling pipeline through solenoid electric valve, realize the switching between different operating mode and the technology, can solve the gaseous residual problem of advance kind process, through the cooperation between PLC controller and multiple function pipeline and the sensor, can solve the complexity and the security problem of admitting air in the experimentation, can solve the inside automatic pressure protection problem of reactor when advancing kind.
Drawings
Fig. 1 is a schematic view of a related control mode of a gas distribution device according to an embodiment of the present invention.
In the drawings, the correspondence between each component and the reference numeral is:
1. the system comprises a gas sample introduction pipeline, 2 electromagnetic control valves, 3 mass flow controllers, 4 gas sampling pipelines, 5 gas cleaning pipelines, 6 gas collection pipelines, 7 liquid sample introduction pipelines, 8 liquid sample introduction devices, 9 front and rear cleaning pipelines, 11 humidifying pipelines, 12 cleaning pipelines, 13 sampling pumps, 14 PLC controllers, 15 temperature and humidity sensors, 16 differential pressure sensors and 17 human-computer operation interfaces.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The invention is described in further detail below with reference to the accompanying drawings:
as shown in fig. 1, according to the utility model provides a gas distribution device, include: the device comprises a gas sample introduction pipeline 1, an electromagnetic control valve 2, a mass flow controller 3, a gas sampling pipeline 4, a gas cleaning pipeline 5, a gas collecting pipeline 6, a liquid sample introduction pipeline 7, a liquid sample introduction device 8, a front cleaning pipeline and a rear cleaning pipeline 10, a humidifying pipeline 11, a cleaning pipeline 12, a sampling pump 13, a PLC (programmable logic controller) 14, a temperature and humidity sensor 15 and a differential pressure sensor 16;
the gas sampling pipeline 1 is connected between a gas source and a reactor, each gas sampling pipeline 1 is provided with an electromagnetic control valve 2 for switching gas circuit functions, each gas sampling pipeline 1 is also provided with a mass flow controller 3, and the mass flow controllers 3 are connected with a PLC (programmable logic controller) 14 and used for controlling the sampling flow of gas;
the gas sampling pipeline 4 is connected between a sampling pump 13 and a sampling device, and the sampling pump 13 is connected with a PLC (programmable logic controller) 14;
the gas cleaning pipeline 5 and the gas collecting pipeline 6 are respectively connected with the reactor, the gas cleaning pipeline 5 is used for discharging gas in the reactor and the pipeline, and the gas collecting pipeline 6 is used for collecting unnecessary gas;
the liquid sample introduction pipeline 7 is connected between a liquid source and the liquid sample introduction device 8 and is used for independently introducing samples into the liquid sample, and the liquid sample introduction device 8 is used for introducing samples into the liquid sample;
the front and rear cleaning pipelines 9 are used for cleaning the pipelines in the gas sample introduction process, the humidifying pipeline 11 is used for changing the humidity of the gas environment, and the cleaning pipeline 12 is used for cleaning the gas sample introduction environment;
the temperature and humidity sensor 15 and the differential pressure sensor 16 are arranged in the reactor and are connected with the PLC 14.
In this embodiment, through carrying out independent high accuracy control through solenoid electric valve 2 to each way gas sampling pipeline 1, realize the switching between different operating mode and the technology, can solve the gaseous residual problem of advance kind process, through the cooperation between PLC controller 14 and multiple function pipeline and the sensor, can solve the complexity and the security problem of admitting air in the experimentation, can solve the inside automatic pressure protection problem of reactor when advancing kind.
Specifically, the gas sampling pipeline 1 is used for connecting a control valve and the mass flow controller 3, the electromagnetic control valve 2 is opened or closed under the control of the PLC 14, so that the switching of gas circuit functions is realized, and the PLC 14 is also used for realizing high-precision automatic control through the mass flow controller 3.
Wherein, the air supply adopts external introduction, preferably, is provided with the decompression adjusting valve between solenoid electric valve 2 and the air supply for adjust inlet pressure. The signal collected by the pressure difference sensor 16 is uploaded to the PLC controller 14, and the pressure difference sensor 16, the solenoid control valve 2, and the mass flow controller 3 are controlled.
In the above embodiment, preferably, the gas sampling pipeline 1 is a multi-path gas parallel sampling structure, the sampling connection point of each branch is separately provided with the electromagnetic control valve 2, and the electromagnetic control valve 2 is switched when front and back cleaning is realized.
In the above embodiment, preferably, the liquid sample injection device has a KWNT-FUZZY PID control function, so as to realize liquid precise sample injection.
In the above embodiment, preferably, the gas collecting line 6 is provided with a filtration processing device, and the gas collecting line 6 is connected to the gas sampling line 1 and the purge line 12 and the humidification line 11.
In the above embodiment, preferably, the humidifying pipeline 11 adopts an independent bubbling humidifying manner, uses a separation measure of an independent technology to disperse the water with large molecular groups, and realizes accurate control of the humidifying process under the control of the PLC controller 14.
In the above embodiment, preferably, the differential pressure sensor 16 detects the pressure difference of the reactor and transmits the detection signal to the PLC controller 14, so as to implement real-time detection of the equipment and feedback of relevant regulation, and implement differential pressure protection for the reactor.
In the above embodiment, preferably, the air distribution device further includes a human-machine interface, and the human-machine interface is connected to the PLC controller 14 and is used for displaying parameters and setting parameters.
According to the air distribution device disclosed by the embodiment, a human-machine operation panel is required to set related pipelines and sample injection parameters before sample injection.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A gas distribution device, comprising: the device comprises a gas sample introduction pipeline, an electromagnetic control valve, a mass flow controller, a gas sampling pipeline, a gas cleaning pipeline, a gas collecting pipeline, a liquid sample introduction device, a front cleaning pipeline, a rear cleaning pipeline, a humidifying pipeline, a cleaning pipeline, a sampling pump, a PLC (programmable logic controller), a temperature and humidity sensor and a differential pressure sensor;
the gas sample introduction pipeline is connected between a gas source and the reactor, each gas sample introduction pipeline is provided with the electromagnetic control valve for switching gas circuit functions, and each gas sample introduction pipeline is also provided with the mass flow controller which is connected with the PLC and used for controlling the sample introduction flow of gas;
the gas sampling pipeline is connected between the sampling pump and the sampling device, and the sampling pump is connected with the PLC;
the gas cleaning pipeline and the gas collecting pipeline are respectively connected with the reactor, the gas cleaning pipeline is used for discharging gas in the reactor and the pipeline, and the gas collecting pipeline is used for collecting unnecessary gas;
the liquid sample introduction pipeline is connected between a liquid sample source and the liquid sample introduction device and is used for independently introducing samples into the liquid sample;
the front cleaning pipeline and the rear cleaning pipeline are used for cleaning pipelines by gas sampling, the humidifying pipeline is used for changing the humidity of a gas environment, and the cleaning pipelines are used for cleaning the gas sampling environment;
the temperature and humidity sensor and the differential pressure sensor are arranged in the reactor and are connected with the PLC.
2. The gas distribution device according to claim 1, wherein the gas sampling pipeline is a multi-path gas parallel sampling structure, the sampling connection part of each branch is separately provided with the electromagnetic control valve, and a pipeline connected with the electromagnetic control valve adopts a BA-grade stainless steel pipe.
3. The gas distribution device according to claim 1, wherein the liquid sample injection device has a liquid sample separate injection function, the liquid sample injection device has a flow and efficiency adjustment function, and the liquid sample injection device can be used as an independent component.
4. The gas distribution device according to claim 1, wherein the humidifying pipeline and the cleaning pipeline are BA-grade stainless steel pipes and are connected with the mass flow controller.
5. The gas distribution device according to claim 1, wherein the gas collecting pipeline is provided with a filtering treatment device, and the gas collecting pipeline is connected to the gas sampling pipeline, the cleaning pipeline and the humidifying pipeline.
6. The air distribution device of claim 1 or 4, wherein the humidification pipeline adopts an independent bubbling humidification mode.
7. The gas distribution device according to claim 1, wherein the differential pressure sensor detects a pressure difference between the inside of the reactor and the external environment, and transmits a detection signal to the PLC.
8. The gas distribution device of claim 1, wherein the humidification line and the purge line are in an interlocking relationship with the gas sample injection line such that the gas sample injection process and the humidification or purge process of the gas sample injection line cannot work simultaneously.
9. The air distribution device of claim 1, further comprising a human-machine interface, wherein the human-machine interface is connected with the PLC controller and used for displaying parameters and setting parameters.
10. The air distribution device according to claim 1, wherein the mass flow controller and the electromagnetic control valve are connected through a plurality of pipelines, and a pressure reduction regulating valve is arranged between the electromagnetic control valve and an air source and used for regulating the air inlet pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221234308.9U CN217887894U (en) | 2022-05-19 | 2022-05-19 | Air distribution device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221234308.9U CN217887894U (en) | 2022-05-19 | 2022-05-19 | Air distribution device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217887894U true CN217887894U (en) | 2022-11-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221234308.9U Active CN217887894U (en) | 2022-05-19 | 2022-05-19 | Air distribution device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217887894U (en) |
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2022
- 2022-05-19 CN CN202221234308.9U patent/CN217887894U/en active Active
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