A pipeline-embedded discharge plasma liquid-phase nitrogen fixation device and a nitrogen fixation method thereof

Abstract

The application discloses a pipeline embedded discharge plasma liquid-phase nitrogen fixation device and a nitrogen fixation method thereof, and comprises a multi-discharge unit system, a gas pipeline system and a modularized sealed water flow chamber system; based on the atmospheric pressure gas-liquid discharge plasma nitrogen fixation technology, the device can produce liquid nitrogen fertilizer in real time, so as to solve a series of problems caused by insoluble substances in the fertilizer in the actual use process of drip irrigation. Air is used as the working gas, water flows into the cavity through the water inlet, sequentially passes through a plurality of discharge plasma regions, and the treated liquid carrying nitrogen oxides flows out from the other end of the water flow chamber and enters the drip irrigation system to directly irrigate crops. The application is convenient to operate, low in cost, can be made into a modularized nitrogen fixation product for popularization and application, and realizes large-area drip irrigation system irrigation operation.

Description

Technical Field

[0001] The invention belongs to the field of plasma technology, specifically relating to a pipe-embedded discharge plasma liquid-phase nitrogen fixation device and its nitrogen fixation method. Technical Background

[0002] Drip irrigation technology has promoted the development of modern agriculture with its advanced advantages in water conservation, fertilizer conservation, increased yield and efficiency, and improved crop quality. However, with the continuous improvement of actual production needs and the widespread adoption of "water and fertilizer integration" in drip irrigation systems, the water and fertilizer production processes used to reduce costs inevitably lead to the presence of insoluble substances in the liquid flowing through the drip irrigation system. Physical accumulation and chemical corrosion within the micropipes are becoming increasingly serious, causing significant economic losses. Modern agricultural science has demonstrated an urgent need for liquid nitrogen fertilizer production technology. Summary of the Invention

[0003] This invention primarily employs atmospheric pressure gas-liquid discharge plasma technology to propose a pipe-embedded discharge plasma liquid-phase nitrogen fixation device and its nitrogen fixation method. The aim is to solve a series of problems caused by insoluble substances in fertilizers during the actual use of drip irrigation by providing a device for real-time production of liquid nitrogen fertilizer.

[0004] In the plasma region, a large number of high-energy electrons can excite and ionize nitrogen, oxygen, water, and other substances in the environment, producing nitrogen-containing reactive groups (RNS) and free radicals through a series of reactions. Among them, [the following is a list of specific compounds / elements]. Nitrified nitrogen, represented by nitrate nitrogen, is known as "available nitrogen in soil" because it can be directly absorbed by crops in ionic form and participate in the nitrogen cycle. Plasma-based liquid-phase nitrogen fixation not only has a good growth-promoting effect, but also effectively avoids a series of problems caused by insoluble fertilizers clogging drip irrigation.

[0005] The specific technical solution of this invention is as follows:

[0006] A pipe-embedded discharge plasma liquid-phase nitrogen fixation device includes: a multi-discharge unit system, a gas pipeline system, and a modular sealed water flow chamber system;

[0007] The multi-discharge unit system includes multiple discharge units, each of which includes a high-voltage electrode, a high-voltage electrode holder, and a discharge unit chamber; the high-voltage electrode is sealed within the discharge unit chamber by the high-voltage electrode holder.

[0008] The gas pipeline system is an integrated unit, including a main gas pipeline. The main gas pipeline has an inlet and multiple gas pipeline outlets. The gas pipeline outlets are sealed to the side inlet of the discharge unit chamber.

[0009] The discharge unit chamber is sealed to the modular sealed water flow chamber system; the modular sealed water flow chamber system is equipped with a ground electrode.

[0010] Specifically, the modular sealed water flow chamber system includes a water flow chamber and a water flow chamber cover plate; the discharge unit chamber is sealed and fixed inside the circular hole of the water flow chamber cover plate.

[0011] The ground electrode is fixed in the water flow chamber by a ring structure. The ring of the ground electrode is interlocked with the inlet of the modular sealed water flow chamber system.

[0012] In this invention, multiple discharge units are fixed in parallel, and water flows through each discharge area in sequence to achieve the effect of multiple treatments.

[0013] This invention uses air as the working gas. The air is transported by an external air pump through a gas pipeline system to the gas-liquid junction at the end of the high-voltage electrode. Discharge plasma is generated in this area. The liquid flowing through this area is treated by plasma and is rich in nitrogen oxides in the form of ions. It then flows out from the other end of the water flow chamber.

[0014] The nitrogen fixation method of the pipe-embedded discharge plasma liquid-phase nitrogen fixation device includes the following steps:

[0015] Step 1: Assembly of the discharge unit. Place the high-voltage electrode holder into the high-voltage end of the discharge unit, then pass the high-voltage electrode branch through the central hole of the high-voltage electrode holder and push it downwards to its maximum extent. Complete the assembly of all discharge units in the same way and rotate the discharge unit chamber to adjust it so that the air inlet end of the discharge unit is perpendicular to the high-voltage electrode crossbar.

[0016] Step 2: Connect the gas pipeline outlet to the gas inlet of each discharge chamber.

[0017] Step 3: Insert the ground electrode into the water inlet of the water flow chamber, so that its ring structure is interlocked with the water inlet.

[0018] Step 4: Assemble the water flow chambers. Insert the discharge chambers into the round holes of the water flow chamber's upper cover plate. After adjusting the depth, seal the water flow chambers to the upper cover plate.

[0019] Step 5: Water Treatment. Connect the external water pipe to the water inlet, connect the air pump to the air inlet, and turn on the external power supply. Discharge plasma is generated at the gas-liquid interface below the discharge unit. After being treated by the plasma, the water flows out from the other end of the water flow chamber, thus obtaining agricultural irrigation water rich in nitrogen oxides.

[0020] The beneficial effects of this invention are:

[0021] (1) The water flows through multiple discharge areas in sequence, which means it is treated multiple times, which can effectively increase the nitrogen oxide content in the liquid.

[0022] (2) Each discharge unit is detachable, and the modular design is suitable for various operating environments, while facilitating maintenance and replacement required for long-term use.

[0023] (3) Using air as the working gas can greatly reduce operating costs.

[0024] (4) The present invention is an embedded device for drip irrigation pipes. The water inlet of the water flow chamber can be directly connected to an ordinary water pipe. It is simple to operate and suitable for various working environments. Attached Figure Description

[0025] Figure 1 This is a three-dimensional schematic diagram of the embedded discharge plasma liquid phase nitrogen fixation device of the present invention;

[0026] Figure 2 This is a left view of the embedded discharge plasma liquid phase nitrogen fixation device of the present invention;

[0027] Figure 3 This is a side sectional view of the water flow chamber of the present invention;

[0028] Figure 4 This is a side sectional view of the discharge unit of the present invention;

[0029] In the diagram: 1. Water flow chamber; 2. Water flow chamber cover plate; 3. Water inlet; 4. Main gas pipeline; 5. Air inlet; 6. Gas pipeline outlet; 7. Discharge unit chamber; 8. High voltage electrode fixing component; 9. Discharge unit air inlet; 10. High voltage electrode; 11. Ground electrode. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0031] like Figures 1 to 4 As shown, the pipeline-embedded discharge plasma liquid phase nitrogen fixation device consists of a multi-discharge unit system, a gas pipeline system, and a modular sealed water flow chamber system.

[0032] The multi-discharge unit system consists of multiple discharge units arranged in an array. Each discharge unit comprises a discharge unit chamber 7, a high-voltage electrode 10, and a high-voltage electrode fixing component 8. For example... Figure 4 As shown, the discharge unit chamber 7 is an integrated structure with three interfaces for connecting to the high-voltage electrode 10, connecting to the gas pipeline outlet 6, and constructing the discharge plasma region, respectively. The high-voltage electrode 10 is an integrated design made of metal conductor material. The high-voltage electrode fixing component 8 is made of insulating material. After connecting the discharge unit to the high-voltage electrode 10, the direction of the discharge unit air inlet 9 needs to be adjusted so that it is perpendicular to the crossbar of the high-voltage electrode 10.

[0033] The gas pipeline is an integrated design that connects multiple discharge units. The gas pipeline system includes a main gas pipeline 4, which has an inlet 5 and multiple gas pipeline outlets 6. The gas pipeline outlets 6 are sealed to the side inlets 9 of the discharge unit chambers 7.

[0034] like Figure 3 As shown, the modular sealed water flow chamber system consists of a water flow chamber 1, a water flow chamber cover plate 2, and a ground electrode 11. The water flow chamber 1 has a slot in the middle and is made of insulating material; the water flow chamber cover plate 2 has multiple holes; the water flow chamber cover plate 2 and the water flow chamber 1 can form a closed water treatment chamber; the ground electrode 11 is an integrated embedded design, with its circular end interlocking with the water inlet 3 of the water flow chamber, so that it is fixed inside the water flow chamber and directly below the discharge unit chamber 7.

[0035] An embedded discharge plasma liquid-phase nitrogen fixation device, the nitrogen fixation method steps are as follows:

[0036] Step 1: Multi-discharge unit system. Insert the high-voltage electrode holder 8 into the upper end of the discharge unit chamber 7, ensuring the lower edge of the upper edge of the high-voltage electrode holder 8 contacts the upper edge of the high-voltage end of the discharge unit chamber 7. Pass the high-voltage electrode through the central hole of the high-voltage electrode holder 8 and push it downwards to its maximum extent, thus completing the assembly of the discharge unit chamber 7. In this embodiment, the material of the discharge unit chamber 7 is quartz glass; the material of the high-voltage electrode holder 8 is rubber. The diameter of the pre-drilled hole on the upper part of the high-voltage electrode holder 8 is 2mm.

[0037] Step 2: Connect the gas outlet 6 of the gas pipeline to the gas inlet 9 of the discharge unit. In this example, the main gas pipeline 4 is made of rubber and has a diameter of 5mm.

[0038] Step 3: Assembly of the modular sealed water flow chamber system. To construct the sealed water flow chamber, the upper cover plate 2 of the water flow chamber needs to be embedded above the water flow chamber 1. When the upper cover plate 2 is embedded above the water flow chamber 1, the discharge unit chamber 7 moves downwards along with the upper cover plate 2. The ground electrode 11 is inserted into the inlet 3 of the water flow chamber 1, so that its annular structure interlocks with the inlet 3. The annular structure is rotated until it faces the end of the discharge unit, thus completing the assembly of the water flow chamber. In this example, the ground electrode 11 is made of conductive copper; the water flow chamber 1 and the upper cover plate 2 are made of insulating rubber; the inner diameter of the pre-drilled hole in the upper cover plate 2 is 5-6 mm.

[0039] Step 4: Water Treatment. Connect the external water pipe to inlet 3 and the air pump pipe to inlet 5, then turn on the external power switch. Discharge plasma is generated at the end of discharge unit 7. Water flows through inlet 3 into water flow chamber 1, and after flowing through the discharge plasma region, it carries nitrogen oxides and flows out from the other end, thus obtaining plasma-activated water that can be directly used for agricultural drip irrigation.

[0040] This invention uses air as the working gas. Water enters the cavity through the inlet, passes through multiple discharge plasma zones, and the treated liquid, carrying nitrogen oxides, flows out from the other end of the water flow chamber, directly irrigating crops in the drip irrigation system. This invention is easy to operate, low in cost, and can be manufactured into modular nitrogen-fixing products for widespread application, enabling large-area drip irrigation systems.

Claims

1. A pipe-embedded discharge plasma liquid-phase nitrogen fixation device, characterized in that it comprises: Multi-discharge unit system, gas pipeline system and modular sealed water flow chamber system; The multi-discharge unit system includes multiple discharge units, each discharge unit including a high-voltage electrode (10), a high-voltage electrode fixing component (8) and a discharge unit chamber (7); the high-voltage electrode (10) is sealed inside the discharge unit chamber (7) by the high-voltage electrode fixing component (8); The gas pipeline system is an integrated system, including a main gas pipeline (4), which has an inlet (5) and multiple gas pipeline outlets (6). The gas pipeline outlets (6) are sealed to the side inlet (9) of the discharge unit chamber (7). The discharge unit chamber (7) is sealed to the modular sealed water flow chamber system; the modular sealed water flow chamber system is equipped with a ground electrode (11). The modular sealed water flow chamber system includes a water flow chamber (1) and a water flow chamber cover plate (2); the discharge unit chamber (7) is sealed and fixed in the round hole of the water flow chamber cover plate (2).

2. The pipe-embedded discharge plasma liquid phase nitrogen fixation device according to claim 1 is characterized in that the ground electrode (11) is fixed in the water flow chamber (1) by means of a ring structure.

3. The pipe-embedded discharge plasma liquid phase nitrogen fixation device according to claim 2 is characterized in that the ring of the ground electrode (11) is interlocked with the inlet (3) of the modular sealed water flow chamber system.

4. The pipe-embedded discharge plasma liquid-phase nitrogen fixation device according to claim 1, characterized in that a plurality of the discharge units are arranged in parallel.

5. A pipeline-embedded discharge plasma liquid-phase nitrogen fixation method, characterized in that, using any one of the devices of claims 1 to 4, an external water pipe is connected to a modular sealed water flow chamber system, an air pump is connected to a gas pipeline system, and an external power supply is turned on; the discharge plasma is generated at the gas-liquid interface below the discharge unit, and the water flows out from the other end of the modular sealed water flow chamber system after plasma treatment, thus obtaining agricultural irrigation water rich in nitrogen oxides.

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