Multi-channel device for feeding high-temperature cracked water sample

Abstract

The utility model provides a multi-channel device for feeding a high-temperature cracked water sample, which can eliminate man-made interference in a measurement process and realize full-automatic sample feeding measurement so as to meet the long-term monitoring of the quality of a water body. Comprising a water body sample introduction unit, a standard liquid sample introduction unit, a gas sample introduction unit and a gas-liquid confluence piece, the water body sample introduction unit, the standard liquid sample introduction unit and the gas sample introduction unit are all connected to the gas-liquid confluence piece, and the output end of the gas-liquid confluence piece is connected with a cracking tube; the water body sample introduction unit comprises a water body sample pipeline, a three-way switching valve and a water body metering pump which are connected in sequence; the standard liquid sampling unit comprises a standard liquid pipeline and a standard liquid metering pump which are connected with each other; the output end of the water body metering pump and the output end of the standard liquid metering pump are both connected to the gas-liquid confluence piece, the gas sampling unit comprises at least two carrier gas pipelines which are connected in parallel, cross communication points of the carrier gas pipelines are connected to the gas-liquid confluence piece, and each carrier gas pipeline is provided with an electromagnetic valve and a flow limiter which are connected.

Description

TECHNICAL FIELD

[0001] The utility model relates to water body sampling measurement technical field, concretely for high temperature pyrolysis water sample sampling multichannel device. BACKGROUND

[0002] Mercury is a kind of heavy metal of high toxicity, easy to accumulate in water and enter human body through food chain, causes serious harm to main organs such as central nervous system and kidney, therefore, accurate determination of trace mercury in water and relevant toxicology research have very important significance.

[0003] Traditional water quality mercury measurement needs professional personnel to collect water body sample on site, then carries back laboratory and carries out analysis, but the accurate configuration of multiple reagents is needed in this process, and professional training is needed for experimental personnel to complete each step, sampling and measurement process lag time is long, detection cycle is big, and human error is easily introduced in this process, therefore, this method is not suitable for long-term water body monitoring. UTILITY MODEL CONTENT

[0004] In view of the above problems, the utility model provides a multichannel device for high temperature pyrolysis water sample sampling, which can exclude human interference in the measurement process, realize full-automatic sampling measurement, to meet the long-term monitoring of water quality.

[0005] The utility model adopts the following technical scheme, a multichannel device for high temperature pyrolysis water sample sampling, including water body sampling unit, standard solution sampling unit, gas sampling unit, gas-liquid converging piece, water body sampling unit, standard solution sampling unit, gas sampling unit are connected to the gas-liquid converging piece, and the output end of the gas-liquid converging piece is connected with the cracking pipe, the water body sampling unit includes water body sample pipeline, three-way switch valve, water body metering pump connected in turn, the standard solution sampling unit includes the standard solution pipeline, standard solution metering pump connected, the output end of water body metering pump, standard solution metering pump is connected to the gas-liquid converging piece, the gas sampling unit includes at least two parallelly connected carrier gas pipelines, the intersection of the carrier gas pipeline is connected to the gas-liquid converging piece, and the electromagnetic valve, flow restrictor connected with each other are arranged on each carrier gas pipeline.

[0006] Further, the carrier gas pipeline is provided with three roads, and the three carrier gas pipelines are connected in parallel, and the electromagnetic valve, flow restrictor connected with each other are arranged on the three carrier gas pipelines.

[0007] Further, the electromagnetic valves are divided into a first electromagnetic valve, a second electromagnetic valve and a third electromagnetic valve; the flow restrictors are divided into a first flow restrictor, a second flow restrictor and a third flow restrictor; the first electromagnetic valve, the second electromagnetic valve and the third electromagnetic valve are respectively connected with the first flow restrictor, the second flow restrictor and the third flow restrictor, the first electromagnetic valve adopts a normally open electromagnetic valve, and the second electromagnetic valve and the third electromagnetic valve both adopt normally closed electromagnetic valves.

[0008] Further, the flow of the carrier gas through the third flow restrictor is greater than the flow of the second flow restrictor, and the flow of the carrier gas through the second flow restrictor is greater than the flow of the first flow restrictor.

[0009] Further, the three-way switch valve is further connected with a pure water pipeline.

[0010] The utility model discloses a beneficial effect is, through setting up water body sampling unit, standard solution sampling unit, gas sampling unit, can according to the measurement situation corresponding automatic sampling, then through the gas-liquid confluence spare output to the pyrolysis tube, reduce the human cost and resource waste, also can reduce the measurement data fluctuation caused by human error, and can be applicable to long -term water body monitoring sampling, has good economic use value. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is the connection schematic diagram of the utility model. DETAILED DESCRIPTION

[0012] As Figure 1 The utility model discloses a multi -channel device for high temperature pyrolysis water sample sampling, including water body sampling unit, standard solution sampling unit, gas sampling unit, gas-liquid confluence spare 15, water body sampling unit, standard solution sampling unit, gas sampling unit all are connected in gas-liquid confluence spare 15, and the output end of gas-liquid confluence spare 15 is connected with the pyrolysis tube (not shown in drawing), water body sampling unit includes the water body sample pipeline 1 of connection in proper order, three -way switch valve 7, water body metering pump 10, standard solution sampling unit includes the standard solution pipeline 17 of connection, standard solution metering pump 3, the output end of water body metering pump 10, standard solution metering pump 3 all are connected in gas-liquid confluence spare 15, and gas sampling unit includes at least two parallel connections of carrier gas pipeline, and the cross communication point of carrier gas pipeline is connected in gas-liquid confluence spare 15, and is equipped with the electromagnetic valve, flow restrictor of being connected on every carrier gas pipeline.

[0013] Carrier gas pipeline is equipped with three roads, and the three carrier gas pipelines are connected in parallel, and the electromagnetic valve, flow restrictor of being connected are all equipped on three carrier gas pipelines.

[0014] The electromagnetic valves are divided into a first electromagnetic valve 4, a second electromagnetic valve 5 and a third electromagnetic valve 6; the flow restrictors are divided into a first flow restrictor 11, a second flow restrictor 12 and a third flow restrictor 13; the first electromagnetic valve 4, the second electromagnetic valve 5 and the third electromagnetic valve 6 are connected with the first flow restrictor 11, the second flow restrictor 12 and the third flow restrictor 13 respectively, the first electromagnetic valve 4 is a normally open electromagnetic valve, the second electromagnetic valve 5 and the third electromagnetic valve 6 are normally closed electromagnetic valves; the flow of the carrier gas through the third flow restrictor 13 is greater than the flow of the carrier gas through the second flow restrictor 12, and the flow of the carrier gas through the second flow restrictor 12 is greater than the flow of the carrier gas through the first flow restrictor 11.

[0015] The pure water pipeline 2 is also connected to the three-way switch valve 7.

[0016] The working process of the utility model is:

[0017] In the idle state, the first electromagnetic valve 4 is always kept open, the carrier gas passes through the first flow restrictor 11 and enters the gas-liquid converging device 15 through the gas inlet pipeline at a low flow rate, and finally flows out to the cracking pipe, so that the pipeline is continuously blown by the gas flow, thereby preventing residual;

[0018] When the water sample is sampled, the water sample flows through the three-way switch valve 7 and enters the sampling pipeline 8, and is accurately sampled by the high-precision water metering pump 10, and then the water sample flows through the sampling pipeline 9 to the gas-liquid converging device 15; at the same time, the second electromagnetic valve 5 is opened, the carrier gas passes through the second flow restrictor 12 and flows through the gas inlet pipeline at a medium flow rate, and then the carrier gas carrying the water sample liquid flows into the cracking pipe in the gas-liquid converging device 15;

[0019] When the standard solution is sampled, the standard solution passes through the standard solution pipeline 17, and the accurate standard solution volume is controlled by the high-precision standard solution metering pump 3 to enter the standard solution pipeline 16 and flow into the gas-liquid converging device 15; at the same time, the second electromagnetic valve 5 is opened, the carrier gas passes through the second flow restrictor 12 and also flows through the gas inlet pipeline 14 at a medium flow rate, and then the carrier gas carrying the standard solution flows into the cracking pipe at the gas-liquid converging device 15;

[0020] When the pipeline is cleaned, the third electromagnetic valve 6 is opened, the carrier gas passes through the third flow restrictor 13 and sweeps the pipeline at a large flow rate, at the same time, the pure water passes through the pure water pipeline 2, in turn passes through the three-way switch valve 7, the sampling pipeline 8, the water metering pump 10, the sampling pipeline 9 and the gas-liquid converging device 15, and the pure water is combined with the large-flow carrier gas in the gas-liquid converging device 15, and is swept out of the gas-liquid converging device 15 by the carrier gas, so as to achieve the purpose of cleaning the pipeline.

[0021] And the above-mentioned electromagnetic valves, metering pumps, switch valves, flow restrictors and other electronic devices can be connected with the existing controller, and can be set in advance to realize automatic control.

[0022] In conclusion, the utility model discloses can realize automatic sampling when measuring in laboratory, reduce the measurement data fluctuation caused by human error, facilitate maintenance, not easy to be polluted, be applicable to long -term water body monitoring sampling, reduce manpower cost and resource waste, be favorable to long -term use.

[0023] It is obvious for those skilled in the art that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the utility model is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0024] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be properly combined to form other embodiments that those skilled in the art can understand.

Claims

1. A multi-channel device for high temperature pyrolysis water sample injection, characterized in that: The water body sampling unit, the standard solution sampling unit and the gas sampling unit are connected to the gas-liquid converging device, and the output end of the gas-liquid converging device is connected to the cracking tube; the water body sampling unit comprises a water body sample pipeline, a three-way switching valve and a water body metering pump connected in sequence; the standard solution sampling unit comprises a standard solution pipeline and a standard solution metering pump connected in sequence; the output ends of the water body metering pump and the standard solution metering pump are connected to the gas-liquid converging device; the gas sampling unit comprises at least two parallelly connected carrier gas pipelines, and the intersection of the carrier gas pipelines is connected to the gas-liquid converging device; each carrier gas pipeline is provided with an electromagnetic valve and a flow restrictor connected thereto.

2. The multi-channel device for high temperature pyrolysis water sample injection of claim 1, wherein: The carrier gas pipeline is provided with three carrier gas pipelines connected in parallel, and each carrier gas pipeline is provided with an electromagnetic valve and a flow restrictor connected thereto.

3. The multi-channel device for high temperature pyrolysis water sample injection of claim 2, wherein: The electromagnetic valves are divided into a first electromagnetic valve, a second electromagnetic valve and a third electromagnetic valve; the flow restrictors are divided into a first flow restrictor, a second flow restrictor and a third flow restrictor; the first electromagnetic valve, the second electromagnetic valve and the third electromagnetic valve are respectively connected to the first flow restrictor, the second flow restrictor and the third flow restrictor; the first electromagnetic valve is a normally open electromagnetic valve, and the second electromagnetic valve and the third electromagnetic valve are normally closed electromagnetic valves.

4. The multi-channel device for high temperature pyrolysis water sample injection of claim 3, wherein: The flow of the carrier gas through the third flow restrictor is greater than the flow of the carrier gas through the second flow restrictor, and the flow of the carrier gas through the second flow restrictor is greater than the flow of the carrier gas through the first flow restrictor.

5. The multi-channel device for high temperature pyrolysis water sample injection of claim 1, wherein: The three-way switching valve is further connected to a pure water pipeline.

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