CN216792255U - Gas multi-path automatic sampling device for continuous online measurement - Google Patents
Gas multi-path automatic sampling device for continuous online measurement Download PDFInfo
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- CN216792255U CN216792255U CN202123119522.8U CN202123119522U CN216792255U CN 216792255 U CN216792255 U CN 216792255U CN 202123119522 U CN202123119522 U CN 202123119522U CN 216792255 U CN216792255 U CN 216792255U
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Abstract
The utility model relates to the technical field of gas analysis and detection equipment, and discloses a gas multi-path automatic sampling device for continuous online measurement, which comprises a gas inlet pipeline, a multi-path selection valve, a controller, a pressure sensor, a mass flow controller, a float flowmeter and a gas outlet pipeline; the multi-way selector valve is disc-shaped, the center of the disc is a multi-way switching valve, and the outer side of the disc is also provided with at least two gas sample inlets; each gas injection port is communicated with the multi-path switching valve, and the distance from each gas injection port to the multi-path switching valve is equal; when the circular air inlets are distributed, the length of each air path is consistent, and the response time is consistent. The gas circuit pressure monitoring device is provided with a pressure alarm device, and can remind a user of checking the gas circuit and the gas source in time when the gas circuit pressure is abnormal. The mass flow controller and the pressure gauge can ensure that the pressure of different gas circuits after passing through the system is consistent, and the device can save manpower and material resources, so that the online gas detection is simple and convenient to operate and has automatic flow.
Description
Technical Field
The utility model relates to the technical field of gas analysis and detection equipment, in particular to a gas multi-path automatic sampling device for continuous online measurement.
Background
In automated monitoring and in automated experiments, it is often necessary to switch measurements from different gas sources in a particular sequence on time. When different gases are measured, measurement personnel are required to manually switch the air inlet channel for measurement in many times, the manual switching consumes time and labor, the cost is high, and the influence on the measurement during the switching cannot be guaranteed. Several problems with manual switching: 1. it is difficult to ensure the consistency of the measurement, for example, if the stationary phase simultaneous measurement needs to be performed on the gas of each channel, the measurement time may be inconsistent due to the uncertainty of manual switching. 2. Manual switching cannot be automated and requires manual labor to be allocated for operation on time. The influence on the experimental measurement due to manual operation is introduced.
The prior art also has some special automation devices that switch the measurement sources in time according to a predetermined sequence. Too many measurement sources lead to more complicated measurement process and intertwined measurement channels, thereby causing the problems of easy confusion of manual operation identification, difficult inspection and maintenance and the like. In addition, in the prior art, the automation equipment mostly needs to collect gas additionally and then drive the gas into the automation equipment for measurement, so that a set of gas multi-path automatic sampling equipment for continuous online measurement, which has the advantages of small occupied space, simplicity and convenience in installation and high control precision, is needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects in the prior art and provides a gas multi-path automatic sampling device.
The purpose of the utility model is realized by the following technical scheme:
a gas multi-path automatic sampling device for continuous online measurement comprises: the device comprises an air inlet pipeline, a multi-way selector valve, a controller, a pressure sensor, a mass flow controller, a float flowmeter and an air outlet pipeline;
the multi-way selector valve is disc-shaped, the center of the disc is a multi-way switching valve, and the outer side of the disc is also provided with at least two gas sample inlets; each gas injection port is communicated with the multi-path switching valve, and the distance from each gas injection port to the multi-path switching valve is equal;
the air inlet pipeline, the gas sample inlet, the pressure sensor, the mass flow controller and the float flowmeter are sequentially connected with one another through an air circuit; meanwhile, the mass flow controller and the gas outlet pipeline form another gas circuit connection; the controller is used for controlling the multi-path switching valve, so that the multi-path switching valve performs gas path switching according to a certain time and a certain sequence.
Preferably, the gas multi-path automatic sampling device for continuous online measurement further comprises a pressure display meter and a flow display meter, wherein the pressure display meter and the flow display meter are respectively connected with the pressure sensor and the mass flow controller and are used for displaying the gas pressure and the gas flow in the gas path.
Preferably, the gas multi-path automatic sampling device for continuous online measurement further comprises a pressure and flow monitoring board, and the pressure and flow monitoring board is used for sending out warning information when the gas pressure and/or flow in the gas path are abnormal.
The use method of the device comprises the following steps: different sources of gas are connected to the multi-way switching valve through the gas inlet pipeline, the multi-way switching valve can be set to a certain switching sequence and a certain switching time by the controller, and the gas outlet is connected to the pressure sensor to measure the pressure. When the pressure is too high or too low, the user is prompted to send out warning information when the pressure is abnormal, and the gas circuit and the detection source need to be checked. The mass flow controller ensures that different gas circuits are switched in and then output at the same flow rate, the float flowmeter displays the output flow rate, and finally, the gas is output through the outlet.
Preferably, the gas outlet pipeline of the gas multi-path automatic sampling device for continuous online measurement is also connected with a gas analyzer, so that continuous online measurement and analysis can be directly performed through other analyzers.
More preferably, the controller is connected with the gas analyzer, so that the gas analyzer can be controlled by the controller conveniently, and then the gas analysis result can be displayed on line through an external display screen.
Compared with the prior art, the utility model has the following beneficial effects:
the utility model discloses a gas multi-path automatic sampling device for continuous on-line measurement, which comprises: the device comprises an air inlet pipeline, a multi-way selector valve, a controller, a pressure sensor, a mass flow controller, a float flowmeter and an air outlet pipeline; the multi-way selector valve is disc-shaped, the center of the disc is a multi-way switching valve, and the outer side of the disc is also provided with at least two gas sample inlets; each gas injection port is communicated with the multi-path switching valve, and the distance from each gas injection port to the multi-path switching valve is equal; the air inlet pipeline, the gas sample inlet, the pressure sensor, the mass flow controller and the float flowmeter are sequentially connected through an air circuit; meanwhile, the mass flow controller and the gas outlet pipeline form another gas circuit connection; the controller is used for controlling the multi-path switching valve, so that the multi-path switching valve performs gas path switching according to a certain time and a certain sequence.
The device can realize automatic gas circuit switching. Fixed sequences can be set, and the gas circuits to be measured can be automatically switched at regular time. When the circular air inlets are distributed, the length of each air path is consistent, and the response time is consistent. The gas circuit pressure monitoring device is provided with a pressure alarm device, and can remind a user of checking the gas circuit and the gas source in time when the gas circuit pressure is abnormal. The mass flow controller and the pressure gauge can ensure that the pressure of different gas circuits after passing through the system is consistent, and the measurement cannot be influenced. The device can save manpower and material resources, and the online gas detection operation is simple, convenient and automatic.
Drawings
FIG. 1 is a schematic view of the apparatus according to the present invention;
Detailed Description
The utility model will be further described with reference to the accompanying drawings, but the scope of the utility model is not limited to the following.
As shown in fig. 1, the present embodiment provides a gas multi-path automatic sampling device for continuous online measurement, including: air inlet pipeline, multi-way selector valve, controller, pressure sensor, mass flow controller, float flowmeter, air outlet pipeline.
The multi-way selector valve is disc-shaped, the center of the disc is a multi-way switching valve, and the outer side of the disc is also provided with at least two gas injection ports (in this embodiment, 8 gas injection ports are shown, and the number of other gas injection ports in other embodiments can be correspondingly adjusted); each gas injection port is communicated with the multi-way switching valve, and the distance from each gas injection port to the multi-way switching valve is equal.
The air inlet pipeline, the gas sample inlet, the pressure sensor, the mass flow controller and the float flowmeter are sequentially connected through an air circuit; meanwhile, the mass flow controller and the gas outlet pipeline form another gas circuit connection (in the embodiment, the mass flow controller is connected with a tee joint, one side of the tee joint is connected with the float flowmeter, and the other side of the tee joint is connected with the gas outlet pipeline); the controller is used for controlling the multi-path switching valve, so that the multi-path switching valve performs gas path switching according to a certain time and a certain sequence.
In this embodiment, the controller can be pure PLC, also can be the computer that has integrateed gas analysis appearance (the controller is connected with gas analysis appearance, thereby be convenient for through controller control gas analysis appearance, then through external display screen again, can be with gaseous analysis result of on-line display), when the controller is the computer that has integrateed gas analysis appearance, the gas analysis appearance that the gas outlet pipe way of tee bend opposite side connection can be direct in the controller links to each other, thereby make the gas in the gas outlet pipe way directly get into gas analysis appearance and carry out online gas detection analysis.
In this embodiment, above-mentioned gas multichannel autoinjection device for continuous on-line measurement still includes pressure display meter and flow display meter, pressure display meter and flow display meter link to each other with pressure sensor, mass flow controller respectively for show the gas pressure and the flow in the gas circuit.
In this embodiment, the gas multi-path automatic sampling device for continuous online measurement further comprises a pressure and flow monitoring board, and the pressure and flow monitoring board is used for sending out warning information when the gas pressure and/or flow in the gas path are abnormal.
The use method of the device comprises the following steps: different sources of gas are connected to the multi-way switching valve through the gas inlet pipeline, the multi-way switching valve can be set to a certain switching sequence and a certain switching time by the controller, and the gas outlet is connected to the pressure sensor to measure the pressure. When the pressure is too high or too low, the user is prompted to send warning information when the pressure is abnormal, and the gas circuit and the detection source need to be checked. The mass flow controller ensures that different gas circuits are switched in and then output at the same flow rate, the float flowmeter displays the output flow rate, and finally, the gas is output through the outlet.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. The utility model provides a measure in succession on line with gaseous multichannel autoinjection device which characterized in that includes: the device comprises an air inlet pipeline, a multi-way selector valve, a controller, a pressure sensor, a mass flow controller, a float flowmeter and an air outlet pipeline;
the multi-way selector valve is disc-shaped, the center of the disc is a multi-way switching valve, and the outer side of the disc is also provided with at least two gas sample inlets; each gas injection port is communicated with the multi-path switching valve, and the distance from each gas injection port to the multi-path switching valve is equal;
the air inlet pipeline, the gas sample inlet, the pressure sensor, the mass flow controller and the float flowmeter are sequentially connected with one another through an air circuit; meanwhile, the mass flow controller and the gas outlet pipeline form another gas circuit connection; the controller is used for controlling the multi-path switching valve, so that the multi-path switching valve performs gas path switching according to a certain time and a certain sequence.
2. The gas multi-path automatic sample introduction device for continuous online measurement according to claim 1, further comprising a pressure display meter and a flow display meter, wherein the pressure display meter and the flow display meter are respectively connected with the pressure sensor and the mass flow controller and are used for displaying the gas pressure and the gas flow in the gas path.
3. The gas multi-path automatic sample introduction device for continuous online measurement according to claim 2, further comprising a pressure and flow monitoring board, wherein the pressure and flow monitoring board is used for sending out warning information when the gas pressure and/or flow in the gas path is abnormal.
4. The gas multi-path automatic sample introduction device for continuous on-line measurement according to claim 2, wherein the gas outlet pipeline is further connected with a gas analyzer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123119522.8U CN216792255U (en) | 2021-12-13 | 2021-12-13 | Gas multi-path automatic sampling device for continuous online measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123119522.8U CN216792255U (en) | 2021-12-13 | 2021-12-13 | Gas multi-path automatic sampling device for continuous online measurement |
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| Publication Number | Publication Date |
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| CN216792255U true CN216792255U (en) | 2022-06-21 |
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| CN202123119522.8U Active CN216792255U (en) | 2021-12-13 | 2021-12-13 | Gas multi-path automatic sampling device for continuous online measurement |
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| CN (1) | CN216792255U (en) |
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2021
- 2021-12-13 CN CN202123119522.8U patent/CN216792255U/en active Active
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