CN217180154U - Multi-channel gas sampling and measuring system capable of independently adjusting flow - Google Patents
Multi-channel gas sampling and measuring system capable of independently adjusting flow Download PDFInfo
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- CN217180154U CN217180154U CN202123445746.8U CN202123445746U CN217180154U CN 217180154 U CN217180154 U CN 217180154U CN 202123445746 U CN202123445746 U CN 202123445746U CN 217180154 U CN217180154 U CN 217180154U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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Abstract
The utility model discloses a multi-channel gas sampling and measuring system capable of independently adjusting flow, which comprises a sampling pump (9), a controller (10), a multi-channel sampling and measuring unit, a gas shunting unit and a multi-pipeline gas exhaust (8); each sampling measurement unit comprises a sampling head (13), a filter (1), a first electronic flow controller (2) and a detector (3); the gas diversion unit comprises a second electronic flow controller (12) and a diversion gas pipeline. The system realizes that one set of sampling and measuring system can simultaneously and continuously carry out gas sampling and measurement of a plurality of channels, saves a plurality of sampling pumps used during simultaneous sampling and detection, reduces the cost, reduces the occupied space of equipment, and considers the influence of gas temperature, humidity and pressure parameters on detection simultaneously, so that the data of the measuring system is accurate.
Description
Technical Field
The utility model belongs to gaseous sampling measurement field, in particular to gaseous continuous sampling and measurement system of multichannel that can independently adjust flow.
Background
A gas sampling and detecting method is a core means used in the field of environmental protection on-line monitoring at present. A pipeline is generally used for connecting the detection cavity with a sampling pump, and the operation of the sampling pump enables the air inlet of the sampling pump to form negative pressure relative to the external environment, so that air is pumped into the pipeline from the environment to be detected and then enters the detection cavity. The content and composition of characteristic substances contained in the gas are qualitatively and quantitatively analyzed by various physical or chemical methods.
Aiming at the use scenes that measuring points are dense, a plurality of different gas parameters need to be measured simultaneously, and the installation space of equipment is limited, because the requirements of detectors used for measuring each gas parameter on the sample introduction flow rate are different, the gas in a plurality of environments needs to be subjected to distributed sampling, the flow rate of each channel needs to be controlled independently, and then the gas is concentrated on one piece of equipment for detection. According to a general solution, a sampling pump is used for each gas detection channel, and a sampling rotameter and a shunt rotameter are provided to control the flow. The method can realize gas collection of a plurality of channels, but greatly increases the cost of installation and maintenance, and greatly increases the space occupied by the installation of the equipment sampling system. In addition, the prior art does not consider the influence of gas temperature, humidity and pressure parameters on detection, and the measurement system data is inaccurate.
Disclosure of Invention
The to-be-solved technical problem of the utility model provides a gaseous continuous sampling and measurement system of multichannel that can independently adjust flow, realizes that one set of sampling measurement system can carry out the gaseous sampling and the measurement of a plurality of passageways simultaneously and continuously, and each passageway can carry out independent flow control to measured temperature, atmospheric pressure, humidity parameter, can calculate standard situation flow and gas concentration value.
The utility model discloses a following technical scheme realizes:
a multi-channel gas sampling and measuring system capable of independently adjusting flow comprises a sampling pump, a controller, a multi-channel sampling measuring unit, a gas shunting unit and a multi-pipeline gas exhaust; each path of sampling measurement unit comprises a sampling head, a filter, a first electronic flow controller and a detector; the gas shunting unit comprises a second electronic flow controller and a shunting gas pipeline; the sampling head, the filter, the first electronic flow controller and the detector are sequentially connected by using an air pipe; the multi-pipeline gas exhaust is a cuboid box body, the top of the multi-pipeline gas exhaust is provided with a plurality of sample gas ports, two side surfaces in the length direction are symmetrically provided with an opening respectively, one side of the multi-pipeline gas exhaust is a gas outlet, the other side of the multi-pipeline gas exhaust is a flow dividing port, a gas channel is formed inside the multi-pipeline gas exhaust, and all the gas ports are connected into the gas channel; the sample gas port of the multi-pipeline gas exhaust is connected with the detector through a gas pipe, and the multi-pipeline gas exhaust gas port is connected with the sampling pump; the multi-pipeline gas exhaust shunting port is connected with the second electronic flow controller of the gas shunting unit through a gas pipe; the gas inlet of the second electronic flow controller is connected to the shunt inlet through the shunt gas pipeline; the first electronic flow controller, the detector and the second electronic flow controller are respectively connected with the controller.
Each sampling and measuring unit further comprises a temperature sensor, a pressure sensor and a humidity sensor, the temperature sensor, the pressure sensor and the humidity sensor are arranged in an air pipe connecting the detector and the multi-pipeline air exhaust, and the temperature sensor, the pressure sensor and the humidity sensor are connected with the controller.
And an air pipe joint is arranged on an air port of the multi-pipeline air exhaust, which is connected with the air pipe.
And the idle sample gas port of the multi-pipeline gas exhaust is sealed by using a plug.
And the control switch of the sampling pump is connected with the controller.
Further, the system also comprises a human-computer interaction touch screen which is connected with the controller and can realize the input of system control instructions and the display of working states
The utility model has the advantages that:
the utility model provides a gaseous continuous sampling and measuring device of multichannel that can independently adjust flow realizes that one set of sampling measurement system can carry out the gaseous sampling and the measurement of a plurality of passageways simultaneously and continuously, saves the sampling pump that the multichannel used when sampling simultaneously detects, and the cost is reduced has reduced the shared space of equipment. The sensors measure the temperature, air pressure and humidity parameters, and the standard condition flow and gas concentration value can be calculated.
Drawings
Fig. 1 is the structure schematic diagram of the gas sampling and measuring system of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings
Fig. 1 is a multi-channel gas sampling and measuring system capable of independently adjusting flow according to an embodiment of the present invention, which includes a sampling pump 9, a controller 10, a multi-channel sampling and measuring unit, a gas diversion unit, and a multi-channel gas exhaust 8; each sampling and measuring unit comprises a sampling head, a filter 1, a first electronic flow controller 2, a detector 3, a temperature sensor 4, a pressure sensor 5 and a humidity sensor 6; the gas flow splitting unit comprises a second electronic flow controller 12 and a gas line.
The filter 1 is connected to the sampling head by a trachea, which typically uses a teflon trachea. The filter 1, the first electronic flow controller 2, and the detector 3 are connected in this order using an air pipe. The filter 1 is used for filtering out dust and liquid drops in the sample gas to protect the detector 3 from being polluted, and the service life and the detection effect of the detector 3 are ensured. The first electronic flow controller 2 is arranged through a communication port and connected with the controller 10, so that the gas flow is stably controlled within a small range of a set flow value, and a real-time actual flow value can be read. The multi-pipeline gas exhaust is a cuboid box body, a plurality of sample gas ports are formed in the top of the cuboid box body, an opening is symmetrically formed in each of two side faces of the length direction, a gas outlet is formed in one side of the cuboid box body, a flow dividing port is formed in the other side of the cuboid box body, a gas channel is formed inside the gas exhaust, all the gas ports are connected to the gas channel, all the gas ports are communicated with each other, and a gas pipe connector is installed on the opening of the gas pipe to be connected.
The sample gas port of the multi-pipeline gas exhaust 8 is connected with the detector 3 through a gas pipe, and the connecting gas pipe is provided with a temperature sensor 4, a pressure sensor 5 and a humidity sensor 6. The air outlet of the multi-pipeline air exhaust 8 is connected with a sampling pump 9. The branch opening of the multi-pipeline gas exhaust 8 is connected with the second electronic flow controller 12 of the gas branch unit through a gas pipe; the inlet of the second electronic flow controller 12 is connected to the split flow inlet. The shunting unit is used for adjusting the relation between the sampling gas flow and the rated flow of the sampling pump 9 and ensuring that the sampling pump 9 works at the rated power.
The solid line connections in the figure indicate the gas line connections and the dashed line connections in the figure indicate the cable connections.
The idle sample gas port of the multi-pipeline gas exhaust 8 is sealed by a plug 7, and in order to ensure the gas tightness, sealing materials such as polytetrafluoroethylene tape or thread glue are used for sealing.
The first electronic flow controller 2, the detector 3, the temperature sensor 4, the pressure sensor 5, the humidity sensor 6 and the second electronic flow controller 12 are respectively connected with a controller 10, and a control switch of the sampling pump 9 is connected with the controller 10.
Further, the multi-channel gas sampling system also comprises a human-computer interaction touch screen 11, and the touch screen is connected with the controller 10, so that system control instruction input and working state display can be realized.
The above is only a preferred embodiment of the present invention, and should not be limited to the invention, any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A multi-channel gas sampling and measuring system capable of independently adjusting flow, characterized in that: the system comprises a sampling pump (9), a controller (10), a multi-path sampling measurement unit, a gas distribution unit and a multi-pipeline gas exhaust (8); each sampling measurement unit comprises a sampling head (13), a filter (1), a first electronic flow controller (2) and a detector (3); the gas flow dividing unit comprises a second electronic flow controller (12) and a flow dividing gas pipeline; the sampling head (13), the filter (1), the first electronic flow controller (2) and the detector (3) are sequentially connected by using an air pipe;
the multi-pipeline gas exhaust (8) is a cuboid box body, the top of the multi-pipeline gas exhaust is provided with a plurality of sample gas ports, two side surfaces in the length direction are symmetrically provided with an opening respectively, one side of the multi-pipeline gas exhaust is a gas outlet, the other side of the multi-pipeline gas exhaust is a flow dividing port, a gas channel is formed inside the multi-pipeline gas exhaust, and all the gas ports are connected into the gas channel;
the sample gas port of the multi-pipeline gas exhaust (8) is connected with the detector (3) through a gas pipe, the gas outlet is connected with the sampling pump (9), and the shunt port is connected with the second electronic flow controller (12) of the gas shunt unit through a gas pipe; the gas inlet of the second electronic flow controller (12) is connected to the shunt inlet through the shunt gas pipeline;
the first electronic flow controller (2), the detector (3) and the second electronic flow controller (12) are respectively connected with the controller (10).
2. An independently flow-regulated multichannel gas sampling and measurement system according to claim 1, characterized in that each sampling and measurement unit further comprises a temperature sensor (4), a pressure sensor (5) and a humidity sensor (6) arranged in the trachea connecting the detector (3) and the multi-line gas bank (8), said temperature sensor (4), pressure sensor (5) and humidity sensor (6) being connected to the controller (10).
3. An independently flow-regulated multichannel gas sampling and measurement system according to claim 1, characterized in that the gas port of the multi-line gas bank (8) to which the gas pipe is connected is fitted with a gas pipe connection.
4. An independently flow adjustable multichannel gas sampling and measurement system according to claim 1, characterized in that the idle sample gas port of the multi-line gas outlet (8) is sealed with a plug (7).
5. An independently adjustable flow multichannel gas sampling and measurement system according to claim 1, characterized in that the control switch of the sampling pump (9) is connected to a controller (10).
6. An independently adjustable flow multichannel gas sampling and measurement system according to claim 1, characterized in that the system further comprises a human-computer interaction touch screen (11), and the human-computer interaction touch screen (11) is connected with the controller (10) and can realize system control command input and working state display.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202123445746.8U CN217180154U (en) | 2021-12-31 | 2021-12-31 | Multi-channel gas sampling and measuring system capable of independently adjusting flow |
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| CN202123445746.8U CN217180154U (en) | 2021-12-31 | 2021-12-31 | Multi-channel gas sampling and measuring system capable of independently adjusting flow |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116106487A (en) * | 2023-04-12 | 2023-05-12 | 杭氧集团股份有限公司 | Multi-channel detection switching system and method for gas measuring instrument |
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2021
- 2021-12-31 CN CN202123445746.8U patent/CN217180154U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116106487A (en) * | 2023-04-12 | 2023-05-12 | 杭氧集团股份有限公司 | Multi-channel detection switching system and method for gas measuring instrument |
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