A gas-carrying trace water long-distance transmission-collection device and method

Abstract

The present invention discloses a gas-carrying trace water long-distance transmission and collection device and method, in order to solve the problem that the existing water transmission and collection methods cannot be applied to trace water, and that trace water is easily attached or adsorbed on the surface of the pipe, resulting in difficulty in obtaining water samples or very little water samples obtained. Specifically, it includes a trace water container, a water-carrying pipeline, a return air pipeline, a water collecting unit, a diaphragm pump, a dry carrier gas unit and a diversion pipeline; the two ends of the water-carrying pipeline are respectively connected to the trace water container and the water collecting unit, and are provided with a first valve, an exhaust port, a fifth valve and a dry carrier gas unit; the dry carrier gas unit includes a dry pipeline connected to the water-carrying pipeline, a high-pressure gas cylinder arranged on the dry pipeline, a dry column arranged on the dry pipeline and a third valve; the two ends of the return air pipeline are respectively connected to the trace water container and the water collecting unit, and are provided with a diaphragm pump and a second valve; the two ends of the diversion pipeline are respectively connected to the water-carrying pipeline and the return air pipeline, and are provided with a fourth valve.

Description

Technical Field

[0001] The present invention relates to a device and method for long-distance water transmission and collection, and in particular to a gas-carrying trace water long-distance transmission and collection device and method. Background Art

[0002] Water is ubiquitous in the natural environment. In fields such as geology, the environment, and archaeology, water is also a crucial sample, allowing its isotope ratio analysis to inform research on relevant scientific questions. In some cases, it is necessary to transport and collect trace amounts of water over long distances, potentially obtaining trace amounts from containers in inaccessible areas.

[0003] At present, in areas accessible to personnel, trace water is usually transferred using a pipette, a sampling needle, etc. However, when a person is far away from the container (such as tens of meters), if you want to continue using this method to transfer or transmit trace water, you must extend the length of the needle (gun tip) or use a thin tube for connection. However, since the amount of water is very small, water will inevitably adhere to or adsorb on the inner surface of the needle or thin tube during the transfer process, making it difficult to obtain a water sample, or the water sample obtained is very small. Moreover, water is also easily contaminated during the transfer process, affecting the hydrogen isotope ratio test results. In addition, the trace water in the container can also be transmitted using a mechanical transport method, but it needs to be transported together with the container. However, in many cases, the container is inconvenient to move, and this method cannot be implemented.

[0004] The Chinese patent "Water Transmission Method Based on Water Vapor as a Carrier", publication number CN102235019A, discloses a water transmission method based on water vapor as a carrier. By converting liquid water into water vapor and pressurizing it at the initial water station, the water vapor is then transmitted over a long distance to the destination water station through a gas pipeline containing a heating device and a thermal insulation layer. At the destination water station, the water is then converted from gas to liquid and stored or distributed to users. The transmission distance is on the order of kilometers within the same city, or between cities, provinces, or internationally, or the water is transmitted longitudinally for more than 20 meters. This method is used for the transmission of large amounts of water on the order of kilometers. Therefore, the effect of water adsorbed on the inner wall of the pipeline on the properties of the transmitted water is not considered, nor is the water loss caused by pipeline adsorption. When the water is in trace amounts, the water loss caused by pipeline adsorption cannot be ignored. At the same time, the water loss or water adsorbed inside the pipeline, the contamination of trace water samples and the effect on the isotope ratio of water samples cannot be ignored. Therefore, this method is not suitable for long-distance transmission and collection of trace water. Summary of the Invention

[0005] The purpose of the present invention is to provide a device and method for long-distance transmission and collection of trace water by gas carrier, so as to solve the technical problems that the existing water transmission and collection methods cannot be applied to trace water, trace water is easily attached or adsorbed on the surface of the pipeline, making it difficult to obtain water samples or the obtained water samples are very small, and the water adsorbed on the inner wall of the pipeline is easy to contaminate the water sample.

[0006] In order to achieve the above-mentioned object, the present invention provides a gas-carrying trace water long-distance transmission and collection device, which is special in that it includes a trace water container, a water carrying pipeline, a return air pipeline, a water collecting unit, a diaphragm pump, a dry carrier gas unit and a diversion pipeline;

[0007] The trace water container contains 0.1 to 90 grams of water;

[0008] One end of the water-carrying pipeline is connected to the trace water container, and the other end is connected to the input end of the water collecting unit. A first valve, an exhaust port, a fifth valve, and a dry gas carrier unit are sequentially arranged on the pipeline along the airflow direction.

[0009] The drying carrier gas unit includes a drying pipeline whose output end is connected to the water-carrying pipeline, a high-pressure gas cylinder arranged at the input end of the drying pipeline, drying columns respectively arranged on the drying pipeline along the air flow direction, and a third valve; the high-pressure gas cylinder is filled with high-pressure gas for carrying water;

[0010] One end of the return air pipeline is connected to the trace water container, and the other end is connected to the output end of the water collecting unit, and the diaphragm pump and the second valve are arranged in sequence along the air flow direction;

[0011] The water collecting unit is used to collect trace amounts of water;

[0012] The two ends of the shunt pipeline are respectively connected to the water-carrying pipeline and the air return pipeline, the input end of the shunt pipeline is located between the diaphragm pump and the second valve, and the output end is located between the first valve and the exhaust port. A fourth valve is provided on the shunt pipeline;

[0013] The first valve, the second valve and the fourth valve are all controlled by a remote controller.

[0014] Furthermore, the water collecting unit includes a water collecting column and a desiccant filled in the water collecting column;

[0015] The input end of the water receiving column is connected to the water carrying pipeline, and the output end thereof is connected to the return air pipeline;

[0016] The desiccant is used to absorb trace amounts of water.

[0017] Furthermore, the desiccant is one or a mixture of silica gel, molecular sieve, activated alumina, activated carbon, anhydrous calcium chloride, anhydrous calcium sulfate, anhydrous magnesium sulfate, and anhydrous copper sulfate.

[0018] Furthermore, the water collecting unit includes a cold trap and a water collecting container located in the cold trap;

[0019] The input end of the water collecting container is connected to the water carrying pipeline, and the output end thereof is connected to the air return pipeline;

[0020] The cold trap is used to lower the temperature of the water collecting container so that a small amount of water is frozen in the water collecting container.

[0021] Furthermore, the cold trap is frozen by one or a combination of electric refrigeration, semiconductor refrigeration, liquid nitrogen refrigeration, liquid helium refrigeration, and dry ice refrigeration.

[0022] Furthermore, a humidity sensor is included;

[0023] The humidity sensor is arranged on the water-carrying pipeline;

[0024] The humidity sensor is located between the exhaust port and the connection point between the diversion pipeline and the water-carrying pipeline.

[0025] Furthermore, it also includes a flow controller;

[0026] The flow controller is arranged on the return air pipeline and is located between the diaphragm pump and the connection point between the shunt pipeline and the return air pipeline.

[0027] Furthermore, the first valve and the second valve are both arranged close to the trace water container;

[0028] The output end and the input end of the diversion pipeline are respectively arranged close to the first valve and the second valve;

[0029] The humidity sensor is arranged near the exhaust port;

[0030] The exhaust port is arranged close to the water collecting unit.

[0031] Furthermore, the high-pressure gas in the high-pressure gas cylinder is one or a mixture of nitrogen, argon, helium, hydrogen, and neon;

[0032] The humidity sensor is a hygrometer or a dew point meter.

[0033] At the same time, the present invention also provides a gas-carrying trace water long-range transmission-collection method, based on the above-mentioned gas-carrying trace water long-range transmission-collection device, which is special in that it includes the following steps:

[0034] Step 1: Close the first valve, the second valve, and the fifth valve, open the third valve, the fourth valve, and the exhaust port, and open the high-pressure gas cylinder. The high-pressure gas used to carry water in the high-pressure gas cylinder passes through the drying pipeline, the drying column, the water collecting unit, the diaphragm pump, the return air pipeline, the diversion pipeline, and the water carrying pipeline, and is discharged through the exhaust port. After the water-carrying gas is dried by the drying column, all adsorbed water in the water collecting unit, the diaphragm pump, the return air pipeline, the diversion pipeline, and the water carrying pipeline is removed.

[0035] Step 2: Close the high-pressure gas cylinder, the third valve, the fourth valve, and the exhaust port, open the first valve, the second valve, and the fifth valve, and turn on the diaphragm pump. Driven by the diaphragm pump, the dry gas remaining in the return air line and the water-carrying line continuously circulates between the water-carrying line and the return air line, thereby continuously carrying the trace water in the trace water container to the water collecting unit until the water collecting unit collects all the trace water in the trace water container.

[0036] Furthermore, in step 1, the water collecting unit includes a water collecting column and a desiccant filled in the water collecting column, and the water collecting column and the desiccant therein are heated before opening the high-pressure gas cylinder;

[0037] In step 2, before turning on the diaphragm pump, the water receiving column and the desiccant filled in the water receiving column are cooled to room temperature.

[0038] Furthermore, in step 1, a humidity sensor provided on the water-carrying pipeline is used to detect whether all the adsorbed water in the gas passing through is removed;

[0039] In step 2, the humidity sensor is used to detect whether the water collecting unit has collected all the trace water in the trace water container.

[0040] Beneficial effects of the present invention:

[0041] 1. The present invention provides a gas-carrying trace water long-distance transmission and collection device, which provides transmission power through a diaphragm pump and forms a closed-loop circulation pipeline between the water-carrying pipeline and the return air pipeline, so that the gas used to carry water can carry all the trace water in the trace water container to the water collecting unit in the form of water vapor, and then be collected by the water collecting unit, realizing the complete transmission and collection of trace water in areas where people cannot enter.

[0042] 2. The present invention dries the gas in the dry carrier gas unit by passing it through a drying column before the trace water is transmitted, and then uses the dry gas to fully desorb water from each pipeline and component, thereby avoiding the contamination of trace water by water adsorbed by the pipeline and components.

[0043] 3. The present invention provides transmission power through a diaphragm pump, resulting in small water loss, high water transmission and collection efficiency, and time saving.

[0044] 4. The present invention forms a closed-loop circulation pipeline between the water-carrying pipeline and the air return pipeline, which can not only avoid the loss of trace water, but also prevent the trace water from being polluted by the continuous input of water in the external gas.

[0045] 5. The present invention sets a flow controller on the return air pipeline, so that the gas circulation speed can be adjusted. The faster the gas circulation speed, the faster the transmission speed, and the less water the gas carries per unit flow. It can be adjusted according to actual conditions to meet different conditions.

[0046] 6. The lengths of the water-carrying pipeline and the air return pipeline in the present invention are optional and can be adjusted according to actual conditions, with good applicability.

[0047] 7. The micro-water container of the present invention can be of any shape, and the method has a wide range of applications.

[0048] 8. The present invention does not require continuous input of external gas for carrying, thus avoiding waste of gas and saving costs.

[0049] 9. The trace water container and each pipeline of the present invention do not need to be heated, which saves energy consumption and cost and is more environmentally friendly.

[0050] 10. The present invention does not require complex mechanical transmission devices, heating devices, and heat insulation layers, has a simple structure, low cost, no easily consumable components, easy equipment maintenance, high reliability, easy operation, and is convenient for storage, transportation and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 This is a schematic structural diagram of a first embodiment of a gas-carrying trace water long-distance transmission and collection device of the present invention, wherein the water collecting unit includes a water collecting column and a desiccant filled in the water collecting column;

[0052] Figure 2 It is a structural schematic diagram of a second embodiment of a gas-carried trace water long-distance transmission and collection device of the present invention, wherein the water collecting unit includes a cold trap and a water collecting container located in the cold trap.

[0053] Figure Number:

[0054] 1-trace water container, 2-water carrying pipeline, 3-air return pipeline, 4-water collecting unit, 5-diaphragm pump, 6-diversion pipeline, 7-first valve, 8-exhaust port, 9-drying pipeline, 10-high-pressure gas cylinder, 11-drying column, 12-third valve, 13-second valve, 14-fourth valve, 15-humidity sensor, 16-flow controller, 17-fifth valve. DETAILED DESCRIPTION

[0055] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0056] A gas-carrying trace water long-distance transport and collection device. A trace water container containing trace water is connected to a water collection unit via two fully desorbed pipes. A diaphragm pump provides power, and circulating gas is used to carry the trace water in the trace water container in the form of water vapor to the water collection unit for collection, thereby achieving long-distance transport of trace water. The specific structure is as follows:

[0057] Combine Figure 1 and Figure 2 As shown, both embodiment 1 and embodiment 2 of the present invention include a trace water container 1, a water carrying pipeline 2, an air return pipeline 3, a water collecting unit 4, a diaphragm pump 5, a dry carrier unit, a diversion pipeline 6, a humidity sensor 15 and a flow controller 16; the diaphragm pump 5 is used to provide transmission power, and it has good sealing performance.

[0058] Trace water container 1 is located in an inaccessible area and contains a trace amount of water, weighing 0.1 to 90 grams. The water can be in one or more of liquid, gaseous, and solid states. Trace water container 1 has good sealing properties. It can be double-mouthed, multi-mouthed, or of any shape, and does not require a heating device.

[0059] One end of the water-carrying pipeline 2 is connected to the trace water container 1, and the other end is connected to the input end of the water collecting unit 4. A first valve 7, a humidity sensor 15, an exhaust port 8, a fifth valve 17 and a dry carrier gas unit are arranged in sequence along the airflow direction; the first valve 7 is arranged close to the trace water container 1; the exhaust port 8 is arranged close to the fifth valve 17, and the fifth valve 17 is arranged close to the dry carrier gas unit; the dry carrier gas unit is arranged close to the water collecting unit 4; the humidity sensor 15 is arranged close to the exhaust port 8, and the humidity sensor 15 is a hygrometer or a dew point meter.

[0060] The dry carrier gas unit includes a drying pipeline 9 whose output end is connected to the water-carrying pipeline 2, a high-pressure gas cylinder 10 installed at the input end of the drying pipeline 9, a drying column 11 arranged along the airflow direction of the drying pipeline 9, and a third valve 12. The high-pressure gas cylinder 10 contains high-pressure gas for carrying water; this high-pressure gas can be one or a mixture of nitrogen, argon, helium, hydrogen, and neon. The drying column 11 can be filled with one or a mixture of silica gel, molecular sieves, activated alumina, activated carbon, anhydrous calcium chloride, anhydrous calcium sulfate, anhydrous magnesium sulfate, and anhydrous copper sulfate. The volume of the drying column 11 ranges from tens of milliliters to several liters.

[0061] One end of the return air pipeline 3 is connected to the trace water container 1, and the other end is connected to the output end of the water collecting unit 4. A diaphragm pump 5, a flow controller 16 and a second valve 13 are arranged on it in sequence along the air flow direction; the second valve 13 is set close to the trace water container 1.

[0062] The diversion pipeline 6 is connected to the water-carrying pipeline 2 and the return air pipeline 3 at both ends, with its input end located between the second valve 13 and the flow controller 16, and its output end located between the first valve 7 and the humidity sensor 15. A fourth valve 14 is also provided on the diversion pipeline 6. The output and input ends of the diversion pipeline 6 are located near the first valve 7 and the second valve 13, respectively. The first valve 7, the second valve 13, and the fourth valve 14 are controlled by a remote controller, making them suitable for use in locations where personnel cannot access them.

[0063] There are two methods for implementing the water collecting unit 4 in the present invention:

[0064] The first embodiment is the first one, such as Figure 1 As shown, the water collection unit 4 includes a water collection column and a desiccant filled within the column. The column's input end is connected to the water-carrying pipeline 2, and its output end is connected to the return air pipeline 3. The desiccant is used to absorb trace amounts of water. The volume of the water collection column ranges from a few milliliters to several hundred milliliters. The desiccant is one or a mixture of silica gel, molecular sieves, activated alumina, activated carbon, anhydrous calcium chloride, anhydrous calcium sulfate, anhydrous magnesium sulfate, or anhydrous copper sulfate.

[0065] The second embodiment is the second type, such as Figure 2 As shown, the water collection unit 4 includes a cold trap and a water collection container located within the cold trap. The water collection container's input is connected to the water-carrying pipeline 2, and its output is connected to the return air pipeline 3. The cold trap is used to lower the temperature of the water collection container, causing trace amounts of water to freeze within the container. The cold trap is cooled using one or a combination of electrical refrigeration, semiconductor refrigeration, liquid nitrogen refrigeration, liquid helium refrigeration, and dry ice refrigeration. The cold trap temperature ranges from -30°C to -273°C, with an optimal range of -50°C to -200°C.

[0066] It is worth noting that each pipeline in the embodiment of the present invention has good sealing performance and does not require a heating device or a heat insulation layer.

[0067] The specific operating steps of the above-mentioned gas-carrying trace water long-distance transmission and collection device are as follows:

[0068] Step 1. Close the first valve 7, the second valve 13, and the fifth valve 17, open the third valve 12, the fourth valve 14, and the exhaust port 8, and open the high-pressure gas cylinder 10. The high-pressure gas used to carry water in the high-pressure gas cylinder 10 passes through the drying pipeline 9, the drying column 11, the water collecting unit 4, the diaphragm pump 5, the return air pipeline 3, the diversion pipeline 6, and the water-carrying pipeline 2, and is discharged through the exhaust port 8. After the gas used to carry water is dried by the drying column, all the adsorbed water in the water collecting unit 4, the diaphragm pump 5, the return air pipeline 3, the diversion pipeline 6, and the water-carrying pipeline 2 is removed; when the humidity sensor 15 shows dry, it is determined that the gas has removed all the adsorbed water in the water collecting unit 4, the diaphragm pump 5, the return air pipeline 3, the diversion pipeline 6, and the water-carrying pipeline 2; then execute the next step.

[0069] Step 2: Close the high-pressure gas cylinder 10, the fourth valve 14, the third valve 12, and the exhaust port 8, open the first valve 7, the second valve 13, and the fifth valve 17, and turn on the diaphragm pump 5. Driven by the diaphragm pump 5, the dry gas remaining in the return air line 3 and the water-carrying line 2 continuously circulates between the water-carrying line 2 and the return air line 3, thereby continuously carrying the trace water in the trace water container 1 to the water collecting unit 4. When the humidity sensor indicates dryness, it is determined that the water collecting unit 4 has collected all the trace water in the trace water container 1, and the process ends.

[0070] If the water collecting unit 4 in step 1 is configured as the first configuration, i.e., it includes a water collecting column and a desiccant contained therein, the water collecting column must be heated before opening the high-pressure gas cylinder 10. Furthermore, in step 2, the water collecting column and the desiccant contained therein must be cooled to room temperature before opening the diaphragm pump 5. If the water collecting unit 4 in step 1 is configured as the second configuration, heating is not required.

[0071] The effects of the gas-carrying trace water long-distance transmission and collection device and method provided by the present invention are described below through two implementations:

[0072] Experiment 1:

[0073] According to the structural diagram of the first embodiment of the gas-carrying trace water long-distance transmission-collection device, the device is built, with a water collecting column and a desiccant as the water collecting unit. Specifically, two sections of 1 / 4 inch stainless steel pipe with a length of 100 meters are used as the water-carrying pipeline 2 and the return air pipeline 3. The drying pipeline 9 and the diversion pipeline 6 also use 1 / 4 inch stainless steel pipes, and the humidity sensor 15 uses a dew point meter. The high-pressure gas cylinder is filled with nitrogen. A stainless steel column with a volume of 200mL is used as the water collecting column, and 47.28g of anhydrous calcium chloride is filled inside. A stainless steel double-necked bottle with a volume of about 100mL is used as the trace water container 1. After the trace water container 1 is fully dehydrated at 110°C and cooled to room temperature, it is weighed and recorded using an electronic scale (range 520g, calibration division value 1mg). About 1mL of water is added to the trace water container 1, then weighed and recorded, and then installed in the device. Before the experiment, the entire device is leak-tested to ensure the sealing of the entire device. Afterwards, the water adsorbed on the inner surface of the entire device is fully desorbed using the method of step 1 above, and the temperature is lowered to room temperature. The water collecting column and the anhydrous calcium chloride inside it are weighed and recorded. Set the flow rate to 2L / min, and then transmit and collect trace water according to step 2 above. Nitrogen circulates in the device under the action of the diaphragm pump 5, and water is carried by the circulating gas from the trace water container 1 to the water collecting column, and is adsorbed by the desiccant in the water collecting column. Stop the experiment after the water vapor pressure is lower than 20Pa. Then remove the trace water container 1 and the water collecting column containing trace water, and fully desorb the water adsorbed on the outer surface of the trace water container 1 and the water collecting column at 110°C, and weigh and record after cooling to room temperature. The transmission time is about 4.7h.

[0074] The mass of trace water container 1 before adding water was 270.4678g, and the mass after adding water was 271.6228g, so the mass of water added to trace water container 1 was 1.1550g. After the long-range gas-carrying transport, the mass of trace water container 1 was 270.4681g, so the amount of water transported by the long-range gas-carrying transport was 1.1547g. The mass of the water collection column before transfer was 432.1439g, and the mass after transfer was 433.2997g, so the amount of water collected after transfer was 1.1558g. Based on this, the long-range gas-carrying transport-adsorption collection efficiency was calculated to be 100.1%.

[0075] Experiment 2:

[0076] The device was built according to the structural diagram of the second embodiment of the gas-carrying trace water long-distance transmission and collection device, with a water collection container and a cold trap as the water collection unit. Specifically, two 1 / 4-inch stainless steel pipes with a length of 100 meters were used as the water-carrying pipeline 2 and the return air pipeline 3. The drying pipeline 9 and the diversion pipeline 6 also used 1 / 4-inch stainless steel pipes. The humidity sensor 15 used a dew point meter. The high-pressure gas cylinder was filled with nitrogen. Two stainless steel double-necked bottles with a volume of approximately 100 mL were used as the trace water container 1 and the water collection container, respectively. After the two containers were fully dehydrated at 110°C and cooled to room temperature, an electronic scale (range 520g, calibration scale value 1mg) was used to weigh the two containers separately and record the results. About 1 mL of water was added to the trace water container 1, weighed, and recorded. The two containers were then installed on the device. Before the experiment, the entire device was leak-tested to ensure the sealing of the entire device. The water adsorbed on the inner surface of the device was then fully desorbed using the method in step 1 above. Liquid nitrogen was then added to the cold trap. Once the temperature stabilized, the flow rate was set to 2 L / min. The trace water was then transferred and collected as described in step 2 above. Diaphragm pump 5 circulated nitrogen through the apparatus, and water was carried by the circulating gas from trace water container 1 to the water collection container, where it was frozen. The experiment was terminated when the water vapor pressure fell below 10 Pa. Trace water container 1 and the water collection container were then removed, and the water adsorbed on the outer surfaces of both containers was fully desorbed at 110°C. After cooling to room temperature, the water was weighed and recorded. The transfer time was approximately 4.5 hours.

[0077] The mass of trace water container 1 before adding water was 270.5339g, and the mass after adding water was 271.5188g, so the mass of the added water in trace water container 1 was 0.9849g. The mass of trace water container 1 after gas-carrying long-distance transmission was 270.5336g, so the amount of water transmitted by gas-carrying long-distance transmission was 0.9852g. When removing water from trace water container 1, dry gas was not used to purge the container, and the water inside the container was not completely removed. Therefore, the amount of water transmitted was slightly greater than the amount of water added. The mass of the water collection container before transmission was 274.0713g, and the mass after transmission was 275.0541g, so the amount of water received after transmission was 0.9828g. Based on this, the gas-carrying long-distance transmission-collection efficiency was calculated to be 99.8%.

[0078] The above two experiments fully demonstrate that the gas-carried trace water long-range transmission and collection device and method provided by the present invention can effectively reduce the loss of trace water, avoid trace water pollution, and improve the efficiency of trace water long-range transmission and collection.

[0079] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions within the technical scope disclosed in the present invention shall be covered by the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope of protection of the claims.

Claims

1. A gas-carrying trace water long-distance transmission and collection device, characterized by: It comprises a trace water container (1), a water-carrying pipeline (2), an air return pipeline (3), a water collecting unit (4), a diaphragm pump (5), a dry air-carrying unit, and a diversion pipeline (6); The trace water container (1) contains 0.1 to 90 grams of water; One end of the water-carrying pipeline (2) is in communication with the trace water container (1), and the other end is in communication with the input end of the water collecting unit (4), and a first valve (7), an exhaust port (8), a fifth valve (17), and a dry gas-carrying unit are sequentially provided on the pipeline along the airflow direction; The drying carrier gas unit comprises a drying pipeline (9) whose output end is connected to the water-carrying pipeline (2), a high-pressure gas cylinder (10) arranged at the input end of the drying pipeline (9), drying columns (11) respectively arranged on the drying pipeline (9) along the air flow direction, and a third valve (12); the high-pressure gas cylinder (10) is filled with high-pressure gas for carrying water; One end of the return air pipeline (3) is connected to the trace water container (1), and the other end is connected to the output end of the water collecting unit (4), and the diaphragm pump (5) and the second valve (13) are sequentially arranged on the return air pipeline along the air flow direction; The water collecting unit (4) is used to collect trace amounts of water; The two ends of the diversion pipeline (6) are respectively connected to the water-carrying pipeline (2) and the air return pipeline (3); the input end is located between the diaphragm pump (5) and the second valve (13); the output end is located between the first valve (7) and the exhaust port (8); and a fourth valve (14) is provided on the diversion pipeline (6); The first valve (7), the second valve (13) and the fourth valve (14) are all controlled by a remote controller.

2. The gas-carrying trace water long-distance transmission and collection device according to claim 1, characterized in that: The water collecting unit (4) comprises a water collecting column and a desiccant filled in the water collecting column; The water receiving column input end is in communication with the water carrying pipeline (2), and the output end is in communication with the air return pipeline (3); The desiccant is used to absorb trace amounts of water.

3. The gas-carrying trace water long-distance transmission and collection device according to claim 2, characterized in that: The desiccant is one or a mixture of silica gel, molecular sieve, activated alumina, activated carbon, anhydrous calcium chloride, anhydrous calcium sulfate, anhydrous magnesium sulfate, and anhydrous copper sulfate.

4. The gas-carrying trace water long-distance transmission and collection device according to claim 1, characterized in that: The water collecting unit (4) comprises a cold trap and a water collecting container located in the cold trap; The input end of the water collecting container is in communication with the water carrying pipeline (2), and the output end thereof is in communication with the air return pipeline (3); The cold trap is used to lower the temperature of the water collecting container so that a small amount of water is frozen in the water collecting container.

5. The gas-carrying trace water long-distance transmission and collection device according to claim 4, characterized in that: The cold trap is frozen by one or a combination of electric refrigeration, semiconductor refrigeration, liquid nitrogen refrigeration, liquid helium refrigeration, and dry ice refrigeration.

6. The gas-carrying trace water long-distance transmission and collection device according to any one of claims 1 to 5, characterized in that: Also included is a humidity sensor (15); The humidity sensor (15) is arranged on the water-carrying pipeline (2); The humidity sensor (15) is located between the exhaust port (8) and the connection point between the shunt pipeline (6) and the water-carrying pipeline (2).

7. The gas-carrying trace water long-distance transmission and collection device according to claim 6, characterized in that: Also included is a flow controller (16); The flow controller (16) is arranged on the return air pipeline (3) and is located between the diaphragm pump (5), the diversion pipeline (6) and the connection point of the return air pipeline (3).

8. The gas-carrying trace water long-distance transmission and collection device according to claim 7, characterized in that: The first valve (7) and the second valve (13) are both arranged close to the trace water container (1); The output end and the input end of the diversion pipeline (6) are respectively arranged close to the first valve (7) and the second valve (13); The humidity sensor (15) is arranged near the exhaust port (8); The exhaust port (8) is arranged close to the water collecting unit (4).

9. The gas-carrying trace water long-distance transmission and collection device according to claim 8, characterized in that: The high-pressure gas in the high-pressure gas cylinder (10) is one or a mixture of nitrogen, argon, helium, hydrogen, and neon; The humidity sensor (15) is a hygrometer or a dew point meter.

10. A method for long-range transport and collection of trace water by gas carrier, based on the long-range transport and collection device of trace water by gas carrier according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: Close the first valve (7), the second valve (13) and the fifth valve (17), open the third valve (12), the fourth valve (14) and the exhaust port (8), and open the high-pressure gas cylinder (10). The high-pressure gas used for carrying water in the high-pressure gas cylinder (10) passes through the drying pipeline (9), the drying column (11), the water collecting unit (4), the diaphragm pump (5), the return air pipeline (3), the diversion pipeline (6), and the water-carrying pipeline (2), and is discharged through the exhaust port (8). After the gas used for carrying water is dried by the drying column (11), all adsorbed water in the water collecting unit (4), the diaphragm pump (5), the return air pipeline (3), the diversion pipeline (6), and the water-carrying pipeline (2) is removed. Step 2: Close the high-pressure gas cylinder (10), the third valve (12), the fourth valve (14) and the exhaust port (8), open the first valve (7), the second valve (13) and the fifth valve (17), and turn on the diaphragm pump (5). Driven by the diaphragm pump (5), the dry gas remaining in the return air line (3) and the water-carrying line (2) continuously circulates between the water-carrying line (2) and the return air line (3), thereby continuously carrying the trace water in the trace water container (1) to the water collecting unit (4), until the water collecting unit (4) collects all the trace water in the trace water container (1).

11. The method for long-range transmission and collection of trace amounts of water by gas carrier according to claim 10, characterized in that: In step 1, the water collecting unit (4) includes a water collecting column and a desiccant filled in the water collecting column, and the water collecting column is heated before the high-pressure gas cylinder (10) is opened; Then in step 2, before turning on the diaphragm pump (5), the water receiving column and the desiccant in the water receiving column are cooled to room temperature.

12. The method for long-range transmission and collection of trace amounts of water by gas carrier according to claim 10 or 11, characterized in that: In step 1, a humidity sensor (15) provided on the water-carrying pipeline (2) is used to detect whether all the adsorbed water in the areas where the gas passes has been completely removed; In step 2, the humidity sensor (15) is used to detect whether the water collecting unit (4) has collected all the trace water in the trace water container (1).

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