Preparation device of deuterium depleted water

Abstract

The invention relates to the technical field of preparation of deuterium-depleted water, in particular to a preparation device of deuterium-depleted water, which is characterized in that a tower plate is provided with a plurality of valve modules, and the valve modules are uniformly distributed on the tower plate; each valve module comprises a movable valve component group and a fixed valve component group, each movable valve component group comprises a middle part and an annular cylinder part, the middle part is fixedly connected with the annular cylinder part, and the bottom of the annular cylinder part is fixedly connected with a bottom ring. According to the invention, the rotatable movable valve part is arranged on the tower plate, rotation disturbance is generated by gas phase driving, the gas-liquid mass transfer process is enhanced, liquid on the tower plate is pushed to be distributed more uniformly, retention is reduced, the liquid can be guided to form stable flow by configuring the rotation direction, and the preparation effect of the deuterium depleted water is remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of ultralight water preparation technology, specifically to an apparatus for preparing ultralight water. Background Technology

[0002] As is well known, water in nature is generally composed of two hydrogen atoms and one oxygen atom (H₂O). Hydrogen atoms have three isotopes of different masses, meaning the element hydrogen has three isotopes: one is hydrogen with only one proton, chemically called "protium," which is abundant in nature and combines with oxygen to form water, called "light water" (H₂O); the second is hydrogen with one proton and one neutron, chemically called "deuterium," also known as heavy hydrogen, which is scarce in nature and combines with oxygen to form heavy water (D₂O); the third is hydrogen with one proton and two neutrons, chemically called "tritium," which is extremely rare in nature and can be ignored. Protium and deuterium exist mixed together, so the light and heavy water formed by their respective combinations with oxygen are always mixed together and difficult to separate, which is what people usually refer to as natural water or ordinary water.

[0003] Unlike natural water, ultralight water is produced using advanced manufacturing technology to remove deuterium from natural water, thus reducing its deuterium content.

[0004] In the preparation of ultralight water, it is usually necessary to separate molecules formed by different hydrogen isotopes in the water through distillation. Since light water and heavy water have relatively small differences in physical properties and low relative volatility, the distillation separation process places high demands on gas-liquid mass transfer efficiency, tray utilization, and operational stability.

[0005] In existing distillation units for ultralight water production, floating valve tray structures are commonly used in the distillation columns to automatically regulate the gas flow rate within a certain gas phase load range. These floating valves typically open or close vertically under the influence of the gas phase, and the movement of the floating valves allows the gas phase to pass through and come into contact with the gas-liquid mixture.

[0006] However, in the distillation process used for the preparation of ultralight water, existing float valve structures mainly rely on the axial flow of the gas phase to achieve gas-liquid contact. Their movement after opening is primarily axial lifting and lowering, and the float valve itself typically lacks the structural feature of rotation around its axis. Due to the difficulty in separating deuterium (D) and hydrogen (H) molecules in the gas-liquid system, under the aforementioned structural conditions, local disturbances during gas-liquid contact are limited, which is not conducive to further improving mass transfer efficiency under limited tray numbers and operating heights.

[0007] Meanwhile, the distillation column for ultralight water preparation requires high uniformity of liquid phase distribution on the trays when operating under low pressure or vacuum conditions. Existing float valve structures primarily regulate gas flow and have little impact on the liquid flow on the trays; liquid flow mainly relies on tray slope or overflow structures. Under varying liquid loads or large tray sizes, localized stagnation, uneven distribution, or concentrated flow of the liquid phase can easily occur, reducing the effective mass transfer area of ​​the trays and affecting the separation efficiency in the light water preparation process.

[0008] Furthermore, in existing floating valve trays, each floating valve is typically independent, lacking a structure to guide and coordinate the overall liquid flow trend. When the distillation process requires high operational stability, the existing floating valve structure cannot effectively regulate the liquid flow direction through its own structure, which is detrimental to achieving long-term stable operation in the preparation of ultralight water. Summary of the Invention

[0009] In order to overcome the above-mentioned technical problems, the present invention aims to provide an apparatus for preparing ultralight water to solve the problems mentioned in the background art.

[0010] To achieve the above objectives, the present invention provides the following technical solution: an apparatus for preparing ultralight water, comprising a tray, wherein multiple valve modules are provided on the tray, and the multiple valve modules are evenly distributed on the tray; each valve module includes a moving valve component group and a fixed valve component group, wherein the moving valve component group includes a central component and an annular component, the central component is fixedly connected to the annular component, and a bottom ring is fixedly connected to the bottom of the annular component; the moving valve component group is used to move along the axial direction of the central shaft under the action of the gas phase, and can rotate around the axis of the central shaft, so as to adjust the contact state between the gas phase and the liquid phase during the distillation process.

[0011] Preferably, the bottom ring has multiple protruding teeth along the circumferential direction, and the tower plate has grooves corresponding to the protruding teeth to limit the movement of the valve assembly when it is in the closed state.

[0012] Preferably, the middle component includes an inner cylinder and an outer ring, the inner cylinder and the outer ring being connected by a frame to form an integral structure for mounting the drive assembly.

[0013] Preferably, a drive assembly is detachably mounted on the intermediate component, the drive assembly being used to drive the valve assembly to rotate about an axis under gas phase action.

[0014] Preferably, the drive assembly includes a cover and an impeller, the cover being threaded to the inner cylinder of the middle component, and the impeller being disposed within the middle component.

[0015] Preferably, one end of the impeller contacts the cover, and the impeller is pressed and fixed inside the middle part by the cover.

[0016] Preferably, the inner cylinder of the middle component contacts the impeller through a protrusion, so that the middle component can rotate synchronously with the rotation of the impeller, thereby driving the valve assembly to rotate around the axis.

[0017] Preferably, the valve assembly includes an inner fixed cylinder, and a cross-shaped body is fixedly connected inside the inner fixed cylinder. The cross-shaped body is connected to a central shaft by bolts.

[0018] Preferably, the inner fixed cylinder is connected to the tower plate by threads, the central shaft is aligned with the axis of the inner fixed cylinder, and the top of the central shaft is provided with an anti-detachment ring to limit the axial movement range of the valve assembly.

[0019] Preferably, the impeller can be installed by changing its installation orientation within the intermediate component.

[0020] Preferably, by changing the installation direction of the impeller within the intermediate component, the direction of rotation of the dynamic valve assembly around the central shaft axis can be changed.

[0021] Preferably, when multiple valve modules are provided on the same tray, the installation direction of the impellers in each valve module is configured so that the multiple valve modules cooperate with each other during the distillation process to guide the flow direction of the liquid phase on the tray.

[0022] Compared with the prior art, the beneficial effects of the present invention are: The present invention provides multiple valve modules on the tower plate. Each valve module includes a moving valve component group that can move along the central shaft axis and rotate around the axis. When gas phase a enters through the fixed valve component group and pushes the moving valve component group, gas phase a simultaneously acts on the impeller in the drive assembly, causing the moving valve component group and the bottom ring's convex teeth to generate rotational motion around the axis in the open state. This rotational motion causes a certain degree of disturbance in the contact process between gas phase a and liquid phase b, which is beneficial to the mass transfer between gas and liquid. During the rotation of the valve assembly, the bottom ring rotates accordingly, which exerts a certain pushing effect on the liquid phase b on the tray, making the distribution of liquid phase b on the tray more uniform. This helps to reduce local liquid stagnation or concentrated flow, thereby improving the effective utilization of the tray. By changing the installation direction of the impeller in the drive assembly, the direction of rotation of the valve assembly around the axis can be changed. When multiple valve modules are set on the tray, the rotation direction of each valve module can be configured as needed to guide the liquid phase b to form a more stable flow trend and improve the stability of the distillation operation. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the working state of the present invention; Figure 2 This is a schematic cross-sectional view of the present invention; Figure 3 This is a top view of the structure of the tower plate of the present invention; Figure 4 This is a schematic diagram of the overall structure of the present invention; Figure 5 This is a schematic three-dimensional cross-sectional view of the entire invention. Figure 1 ; Figure 6 This is a schematic three-dimensional cross-sectional view of the entire invention. Figure 2 ; Figure 7 This is a schematic diagram of the structure of the middle component and impeller of the present invention; Figure 8 This is an exploded view of the valve module portion of the present invention.

[0024] In the diagram: 01, Tower plate; 02, Valve module; 21, Dynamic valve assembly; 211, Middle component; 212, Ring cylinder component; 213, Bottom ring; 214, Drive assembly; 2141, Cover component; 2142, Impeller; 22, Fixed valve assembly; 221, Inner fixed cylinder component; 222, Cross body; 223, Central shaft; 224, Anti-detachment ring. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] One embodiment provided by the present invention: refer to Figure 1 and Figure 2 An apparatus for preparing ultralight water includes a tray 01, wherein the apparatus further includes: Valve module 02, which includes a moving valve component group 21 and a fixed valve component group 22; refer to Figures 1-8 The valve assembly 21 includes a middle part 211 and an annular part 212, which are fixedly connected. A bottom ring 213 is fixedly connected to the bottom of the annular part 212. The bottom of the bottom ring 213 is provided with multiple protruding teeth in an annular shape. A drive assembly 214 is detachably installed on the middle part 211.

[0027] The middle component 211 includes an inner cylinder component and an outer ring component, which are connected by a frame.

[0028] The drive assembly 214 includes a cover 2141 and an impeller 2142. The cover 2141 is connected to the inner cylinder of the middle part 211 by a thread. The inner cylinder of the middle part 211 and the impeller 2142 are in contact by a protrusion. This protrusion is used to make the middle part 211 rotate together with the impeller 2142. One end of the impeller 2142 contacts the cover 2141, and the impeller 2142 is pressed into the middle part 211 by the cover 2141.

[0029] The bottom teeth of the bottom ring 213 of the tower plate 01 are provided with grooves.

[0030] The valve assembly 22 includes an inner fixed cylinder 221, and a cross body 222 is fixedly connected inside the inner fixed cylinder 221. The cross body 222 is connected to a central shaft 223 by bolts.

[0031] The inner fixed cylinder 221 is connected to the tower plate 01 by threads. The central shaft 223 and the inner fixed cylinder 221 have the same axis. The top of the central shaft 223 is provided with an anti-detachment ring 224. The central shaft 223 is connected to the anti-detachment ring 224 by threads.

[0032] The inner cylinder of the middle component 211 is movably connected to the central shaft 223, and the components of the moving valve component group 21 are a whole and will move axially or rotate around the axis together.

[0033] The valve module 02 is provided in multiple ways, and the multiple valve modules 02 are evenly distributed on the tower plate 01.

[0034] The inner wall of the ring cylinder 212 contacts the inner fixed cylinder 221.

[0035] When it is necessary to change the direction of rotation of the valve assembly 21 around the axis, first unscrew the anti-detachment ring 224 from the central shaft 223, then unscrew the cover 2141 from the middle part 211, and then remove the impeller 2142 from the middle part 211. After flipping the impeller 2142, put it back into the middle part 211, reset the anti-detachment ring 224 and the cover 2141, and the impeller 2142 will be squeezed back into the middle part 211. After being flipped, the impeller 2142 will be driven by the gas phase, and the valve assembly 21 will rotate in the opposite direction.

[0036] Working principle: The distillation column has multiple trays 01 arranged vertically inside, and each tray 01 is equipped with multiple valve modules 02.

[0037] refer to Figure 1As shown, gas phase a flows vertically upward from below tray 01. Gas phase a first enters through the bottom of the inner fixed cylinder 221 of the fixed valve assembly 22, and passes through the cross-shaped body 222 inside the inner fixed cylinder 221, gradually accumulating below the moving valve assembly 21. When the accumulation of gas phase a reaches a certain level, its pressure acts on the lower part of the moving valve assembly 21. Driven by the gas phase pressure, the moving valve assembly 21 moves upward along the axial direction of the central shaft 223, and the inner cylinder in the middle component 211 slides axially on the central shaft 223.

[0038] As the moving valve assembly 21 moves upward, the bottom ring 213 located at the bottom of the annular cylinder 212 gradually disengages from the corresponding groove structure on the tower plate 01, causing the moving valve assembly 21 to change from its initial limited state to its open state. At this time, the inner wall of the annular cylinder 212 no longer contacts the inner stationary cylinder 221, thereby forming a channel for the gas supply phase a to pass through between the inner stationary cylinder 221 and the annular cylinder 212.

[0039] Gas phase a is discharged upward through the above channel. During the discharge process, it comes into full contact with liquid phase b on tray 01, realizing the mass transfer process between gas and liquid.

[0040] Meanwhile, when the gas phase a starts the valve assembly 21 and passes through the intermediate member 211, the gas phase a flows through the impeller 2142 located within the intermediate member 211. The gas phase a exerts a force on the impeller 2142, causing it to rotate. The rotation of the impeller 2142 is transmitted to the intermediate member 211 through a protrusion, thereby driving the entire valve assembly 21 to rotate around the axis of the central shaft 223.

[0041] During the rotation of the moving valve assembly 21 around its axis, on the one hand, the bottom ring 213 rotates synchronously with the moving valve assembly 21, which agitates the contact area between gas phase a and liquid phase b, making the contact between gas phase a and liquid phase b more sufficient, thereby enhancing the gas-liquid mass transfer effect; on the other hand, the rotating moving valve assembly 21 pushes the liquid phase b on the tray 01, causing the liquid phase b to form an orderly flow on the tray 01.

[0042] Multiple valve modules 02 are provided on the tray 01. To ensure the overall flow direction and flow state of the liquid phase b on the tray 01 are controllable, the impeller 2142 in the drive assembly 214 can be adjusted by changing its installation direction. By changing the installation direction of the impeller 2142, the direction of rotation of the actuated valve assembly 21 around its axis can be controlled, thereby enabling the multiple valve modules 02 to cooperate with each other and jointly drive the liquid phase b on the tray 01 to flow in a predetermined direction, further improving the gas-liquid contact efficiency and separation effect during the distillation process.

[0043] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An apparatus for preparing ultralight water, comprising a tray, characterized in that, The tower plate is provided with multiple valve modules, which are evenly distributed on the tower plate. Each valve module includes a moving valve component group and a stationary valve component group. The valve assembly includes a middle part and an annular cylinder, the middle part being fixedly connected to the annular cylinder, and a bottom ring being fixedly connected to the bottom of the annular cylinder. The actuated valve assembly is used to move along the axial direction of the central shaft under the action of the gas phase and can rotate around the axis of the central shaft to adjust the contact state between the gas phase and the liquid phase during the distillation process.

2. The apparatus for preparing ultralight water according to claim 1, characterized in that: The bottom ring has multiple protruding teeth along the circumferential direction, and the tower plate has grooves corresponding to the protruding teeth to limit the movement of the valve assembly when it is in the closed state.

3. The apparatus for preparing ultralight water according to claim 1, characterized in that: The middle component includes an inner cylinder and an outer ring, which are connected by a frame to form an overall structure for mounting the drive assembly.

4. The apparatus for preparing ultralight water according to claim 3, characterized in that: A drive assembly is detachably mounted on the middle component, the drive assembly being used to drive the moving valve component assembly to rotate about an axis under gas phase action.

5. The apparatus for preparing ultralight water according to claim 4, characterized in that: The drive assembly includes a cover and an impeller. The cover is connected to the inner cylinder in the middle part by threads, and the impeller is disposed inside the middle part.

6. The apparatus for preparing ultralight water according to claim 5, characterized in that: One end of the impeller contacts the cover, and the impeller is pressed and fixed inside the middle part by the cover.

7. The apparatus for preparing ultralight water according to claim 6, characterized in that: The inner cylinder of the middle component contacts the impeller through a protrusion, so that the middle component can rotate synchronously with the rotation of the impeller, thereby driving the valve assembly to rotate around the axis.

8. The apparatus for preparing ultralight water according to claim 1, characterized in that: The valve assembly includes an inner fixed cylinder, inside which a cross-shaped body is fixedly connected, and the cross-shaped body is bolted to a central shaft.

9. The apparatus for preparing ultralight water according to claim 8, characterized in that: The inner fixed cylinder is connected to the tower plate by threads. The central shaft is aligned with the axis of the inner fixed cylinder, and the top of the central shaft is provided with an anti-detachment ring to limit the axial movement range of the valve assembly.

10. The apparatus for preparing ultralight water according to claim 5, characterized in that: The impeller can be installed by changing its mounting orientation within the middle component.

11. The apparatus for preparing ultralight water according to claim 10, characterized in that: By changing the installation direction of the impeller within the intermediate component, the direction of rotation of the actuating valve assembly around the central shaft axis can be changed.

12. The apparatus for preparing ultralight water according to claim 11, characterized in that: When multiple valve modules are installed on the same tray, by configuring the installation direction of the impellers in each valve module, the multiple valve modules cooperate with each other during the distillation process to guide the flow direction of the liquid phase on the tray.

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