Underground water automatic monitoring sample protection device

Abstract

The utility model discloses an underground water automatic monitoring sample protection device which comprises a sample groove and a water sample feeding and discharging mechanism, the water sample feeding and discharging mechanism is connected to the sample groove, and the sample groove is used for storing and keeping the temperature of a water sample; the water sample feeding and discharging mechanism is used for taking out or putting the sample from or into the sample groove; the water sample feeding and discharging mechanism comprises a ball valve, a sampling pump, a sample preparation pump and a pipeline, the pipeline is communicated with the ball valve, the sampling pump and the sample preparation pump, and the water sample feeding and discharging mechanism is communicated with the sample groove through the pipeline. The double-layer thermal insulation sample tank is used for storing and keeping the temperature of a water sample and preventing the temperature from influencing the change of sample components; meanwhile, the water sample feeding and discharging mechanism is used for taking out or putting the sample from or into the sample groove without contacting with air, so that the sample is effectively prevented from being oxidized and is effectively prevented from being influenced by absorbing carbon dioxide in the air.

Description

Technical Field

[0001] The utility model relates to the field of groundwater monitoring, in particular to a groundwater automatic monitoring sample protection device used for preserving samples during groundwater analysis. Background Art

[0002] Automatic groundwater monitoring can monitor water quality change trends in real time, serve as an early warning for groundwater pollution accidents, and provide timely scientific basis for groundwater environmental management.

[0003] For example, patent application 202021369797.X discloses a lower water level measuring device, including a water level pipe, the water level pipe including an upper water level pipe, a lower water level pipe and a connecting member for connecting the upper water level pipe and the lower water level pipe, the upper water level pipe and the lower water level pipe are connected, and a water inlet hole is provided on the pipe wall of the lower water level pipe; a line pipe is provided in the water level pipe, the interior of the line pipe is used for laying lines, and at least one water level sensor is provided on the line pipe. The utility model also provides an automated water level monitoring system, including the underground water level measuring device, a data collector, a cloud server and a monitoring center; the water level sensor is electrically connected to the data collector. This patent application directly measures the water level through a water level sensor set in the water level pipe, has a simple structure, can automatically monitor the water level and has the advantages of remote monitoring.

[0004] However, groundwater is prone to composition changes after sampling, such as oxidation and absorption of carbon dioxide in the air. Therefore, measures need to be taken to protect water samples to avoid problems such as oxidation and absorption of carbon dioxide. Summary of the invention

[0005] Based on this, the primary purpose of the utility model is to provide a groundwater automatic monitoring sample protection device. The protection device adopts a double-layer insulation sample tank for storing and maintaining the temperature of water samples, which can maintain the temperature of groundwater samples and prevent temperature from affecting changes in sample composition; at the same time, a water sample inlet and outlet mechanism is adopted to take out or put in the sample from the sample tank without contacting the air, effectively preventing the sample from being oxidized and absorbing carbon dioxide in the air.

[0006] To achieve the above purpose, the technical solution of the utility model is:

[0007] A groundwater automatic monitoring sample protection device comprises a sample tank and a water sample inlet and outlet mechanism, wherein the water sample inlet and outlet mechanism is connected to the sample tank for sampling; wherein:

[0008] Sample tank, used to store and maintain the temperature of water samples;

[0009] The sample tank adopts a double-layer design, with an inner and outer layer. The inner layer stores the sample, and the outer layer wraps the inner layer. The space between the inner and outer layers is in a vacuum state to maintain the temperature of the inner layer.

[0010] A water sample inlet and outlet mechanism, used to take out or put in the sample from the sample tank;

[0011] The water sample inlet and outlet mechanism includes a ball valve, a sampling pump, a sample preparation pump and a pipeline. The pipeline connects the ball valve, the sampling pump and the sample preparation pump. The inlet and outlet are completed by switching the ball valve and the sampling pump and the sample preparation pump. The water sample inlet and outlet mechanism, the sample tank and the analytical instrument are connected through the pipeline.

[0012] The utility model utilizes a water sample inlet and outlet mechanism for sampling, and connects the sampling device, the sample slot, and the analytical instrument through a pipeline, thereby realizing a closed flow of the sample sampling, pretreatment, and analysis process, and can take out or put in the sample slot without contacting the air, effectively preventing the sample from being oxidized and absorbing the influence of carbon dioxide in the air.

[0013] Furthermore, a vacuum pump is connected between the inner and outer layers of the sample tank, and the vacuum pump is started to evacuate the air in the sample tank to keep it in a vacuum state.

[0014] Furthermore, the inner layer of the sample tank is a vacuum insulation liner, and the outer layer is an insulation shell. There is a certain distance between the vacuum insulation liner and the insulation shell. The vacuum pump valve port is set between the vacuum insulation liner and the insulation shell and is connected to the vacuum pump.

[0015] Furthermore, one end of the sample tank has a cover body, and the other end is closed, and the cover body seals the inner vacuum insulation liner and the outer insulation shell to form a heat preservation layer.

[0016] Furthermore, a sampling valve port is arranged on the cover body, a sampling tube is arranged in the vacuum insulation inner tank, a sampling valve port is arranged at the end of the sampling tube, and the sampling valve port is connected to a sampling pump, and sampling is carried out from the vacuum insulation inner tank through the sampling pump.

[0017] Furthermore, a ball valve is provided at one end of the sample tank, which is connected to a sample preparation pump and connected to the vacuum insulation inner tank through a pipeline. In this way, the sample preparation pump controls the injection into the vacuum insulation inner tank, and the sample is stored in the vacuum insulation inner tank; the inlet and outlet samples are switched by the ball valve. Sampling and sampling are both closed in the pipeline, so that the sample does not contact the air.

[0018] Furthermore, a liquid level meter is provided in the inner layer of the sample tank to display the liquid level of the sample.

[0019] When working, first turn on the vacuum pump to evacuate the air in the heat-regulated sample tank, and then put the groundwater sample into the sample tank through the injection valve to keep the temperature of the sample tank constant. When sampling and analysis are required, the sample preparation valve and sample preparation pump will take out the sample and distribute it to each instrument for analysis, thus achieving isolation from the outside air.

[0020] The beneficial effects of the utility model are:

[0021] 1. It can effectively prevent the sample from being oxidized and absorbing the carbon dioxide in the air.

[0022] 2. It can maintain the temperature of groundwater samples and prevent the temperature from affecting the changes in sample composition. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure implemented by the utility model.

[0024] Figure 2 It is a schematic diagram of the structural decomposition implemented by the utility model.

[0025] In the figure, 1 is the cover; 2 is the vacuum insulation inner tank; 3 is the insulation shell; 4 is the three-way joint; 5 is the float level gauge; 6 is the vacuum pump valve port; 7 is the sampling valve port; 8 is the injection valve port; 9 is the drain valve port; and 10 is the sampling tube. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0027] See also Figure 1-2 As shown, the groundwater automatic monitoring sample protection device implemented by the utility model includes a sample tank and a water sample inlet and outlet mechanism, and the water sample inlet and outlet mechanism is connected to the sample tank, wherein:

[0028] Sample tank, used to store and maintain the temperature of water samples.

[0029] The water sample inlet and outlet mechanism is used to take out or put in the sample from the sample tank.

[0030] The sample tank adopts a double-layer design with an inner and outer layer. The inner layer stores samples and the outer layer wraps the inner layer. The inner and outer layers are in a vacuum state to maintain the temperature of the inner layer. Specifically, the inner layer of the sample tank is a vacuum insulation liner 2, and the outer layer is an insulation shell 3. There is a certain distance between the vacuum insulation liner 2 and the insulation shell 3. The vacuum pump valve port 6 is arranged between the vacuum insulation liner and the insulation shell, and is connected to the vacuum pump (the vacuum pump is an existing equipment, and its connection with the vacuum pump valve port 6 is a conventional connection, so the vacuum pump is not shown in the figure).

[0031] The vacuum pump is connected between the inner and outer layers of the vacuum insulation liner 2 and the insulation shell 3 of the sample tank. The vacuum pump is started to evacuate the air in the vacuum insulation liner 2 and the insulation shell 3 to keep them in a vacuum state for easy insulation.

[0032] One end of the sample tank is provided with a cover body 1 and the other end is closed. The cover body 1 seals the inner vacuum insulation liner 2 and the outer insulation shell 3 to form an insulation layer, which is convenient for maintaining the temperature of the water sample.

[0033] The water sample inlet and outlet mechanism includes a ball valve (three-way joint 4), a sampling pump, a sample preparation pump and a pipeline. The pipeline connects the ball valve, the sampling pump and the sample preparation pump. The inlet and outlet are completed by switching the ball valve and the sampling pump and the sample preparation pump. The water sample inlet and outlet mechanism, the sample tank and the analytical instrument are connected through the pipeline.

[0034] The details are as follows:

[0035] A sampling valve port 7 is provided on the cover body 1, a sampling tube 10 is provided in the vacuum insulation inner tank 2, a sampling valve port 7 is provided at the end of the sampling tube 10, and the sampling valve port 7 is connected to a sampling pump (the sampling pump is an existing equipment, and the connection between it and the sampling valve port 7 is a conventional connection, so the sampling pump is not shown in the figure), and sampling is carried out from the vacuum insulation inner tank through the sampling pump control.

[0036] A ball valve is provided at the bottom of the sample tank, and the ball valve is connected to a sample preparation pump (the sample preparation pump is an existing device, and its connection with the three-way joint 4 is a conventional connection, so the sample preparation pump is not shown in the figure) through a pipeline, and is connected to the vacuum insulation inner liner 2 through a pipeline. In this way, the sample is fed into the vacuum insulation inner liner 2 through the sample preparation pump, and the sample is stored in the vacuum insulation inner liner 2; the inlet and outlet samples are switched through the three-way joint 4 (sampling can be carried out by closing the three-way joint 4, and sampling can be carried out by opening the three-way joint 4). In this way, sampling and sampling are both closed in the pipeline, so that the sample does not contact the air, thereby avoiding problems such as oxidation and absorption of carbon dioxide.

[0037] An upper liquid level switch 5 is arranged in the inner layer of the sample tank. The upper liquid level switch 5 is usually arranged on the cover body 1 to display the liquid level of the sample.

[0038] The three-way connector 4 is connected to a drain valve port 9 so as to discharge the sample and the cleaning water through the drain valve port 9 .

[0039] The process of sampling and analysis using this equipment is:

[0040] 1. Turn on the vacuum pump, open the vacuum extraction valve port 6, and evacuate the air in the sample tank.

[0041] 2. Open the injection valve port 8 and start injection.

[0042] 3. When the sample liquid level reaches the upper liquid level switch 5, close the injection valve 8 to stop sampling.

[0043] 4. After the sampling is completed, open the sampling valve port 7 and start sampling the instrument through the sampling tube 10.

[0044] 5. After sampling, close the sampling valve port 7, open the vacuum extraction valve port 6 and the emptying valve port 9, and empty the sample tank.

[0045] 6. Open the injection valve port 8 and start to introduce cleaning water. When the cleaning water level reaches the upper liquid level switch 5, close the injection valve port 8 to stop introducing cleaning water.

[0046] 7. After completion, open the vacuum extraction valve port 6 and the drain valve port 9 to drain the sample tank.

[0047] 8. Close the vacuum extraction valve port 6 and the exhaust valve port 9 to keep the interior of the sample tank stable.

[0048] In summary, the utility model uses the sample trough and the water sample inlet and outlet mechanism to store samples, uses the water sample inlet and outlet mechanism to take samples, and connects the sampled water sample inlet and outlet mechanism, the sample trough, and the analytical instrument through pipelines, thereby realizing a closed flow of sample sampling, pretreatment, and analysis processes, and can take samples out of or put them into the sample trough without contacting the air, effectively preventing the samples from being oxidized and absorbing carbon dioxide in the air.

[0049] At the same time, the sample tank adopts a double-layer design, with the inner layer storing samples and the outer layer wrapping the inner layer. The inner and outer layers are in a vacuum state to maintain the temperature of the inner layer, which is convenient for storing and maintaining the temperature of water samples.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A groundwater automatic monitoring sample protection device, characterized in that It includes a sample tank and a water sample inlet and outlet mechanism, and the water sample inlet and outlet mechanism is connected to the sample tank for sampling; wherein: Sample tank, used to store and maintain the temperature of water samples; The sample tank adopts a double-layer design, with an inner and outer layer. The inner layer stores samples, and the outer layer wraps the inner layer, with a vacuum state between the inner and outer layers. A water sample inlet and outlet mechanism, used to take out or put in the sample from the sample tank; The water sample inlet and outlet mechanism comprises a ball valve, a sampling pump, a sample preparation pump and a pipeline. The pipeline connects the ball valve, the sampling pump, the sample preparation pump, and connects the water sample inlet and outlet mechanism and the sample tank through the pipeline.

2. A groundwater automatic monitoring sample protection device as claimed in claim 1, characterized in that The vacuum pump is connected between the inner and outer layers of the sample tank.

3. A groundwater automatic monitoring sample protection device as claimed in claim 2, characterized in that The inner layer of the sample tank is a vacuum insulation liner, and the outer layer is an insulation shell. There is a certain distance between the vacuum insulation liner and the insulation shell. The vacuum pump valve port is arranged between the vacuum insulation liner and the insulation shell and is connected to the vacuum pump.

4. A groundwater automatic monitoring sample protection device as claimed in claim 3, characterized in that One end of the sample tank is provided with a cover body, and the other end is closed, and the cover body seals the inner vacuum insulation liner and the outer insulation shell.

5. A groundwater automatic monitoring sample protection device as claimed in claim 4, characterized in that A sampling valve port is arranged on the cover body, a sampling tube is arranged in the vacuum temperature-insulating inner tank, a sampling valve port is arranged at the end of the sampling tube, and a sampling pump is connected to the sampling valve port.

6. A groundwater automatic monitoring sample protection device as claimed in claim 5, characterized in that A ball valve is arranged at one end of the sample tank, the ball valve is connected to a sample preparation pump, and is connected to a vacuum temperature-insulating inner tank through a pipeline; the inlet and outlet samples are switched by the ball valve.

7. A groundwater automatic monitoring sample protection device as claimed in claim 1, characterized in that A liquid level meter is arranged in the inner layer of the sample tank.

Images