CCUS ultra-supercritical carbon dioxide liquid cooling energy storage geothermal power generation double-vortex self-heating device

Abstract

The utility model belongs to the technical field of vortex tubes, and provides a CCUS ultra-supercritical carbon dioxide liquid cooling energy storage geothermal power generation double-vortex self-heating device which comprises a first vortex assembly, the first vortex assembly is welded through an airtight buckle and provided with a second vortex assembly, and Laval nozzles are welded to the first vortex assembly and the second vortex assembly in an airtight buckle mode. The carbon dioxide temperature of the CCUS liquid cooling energy storage geothermal power generation wellhead is increased, the expansion volume of the carbon dioxide is increased, the efficiency of a turbine generator is improved, the installed capacity of a turbine is increased, the energy consumption of the turbine is reduced, and heat energy is provided for clean heating of cities.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of vortex tube, concretely is CCUS ultra supercritical carbon dioxide liquid cooling energy storage geothermal power generation double vortex self -heating device. BACKGROUND

[0002] Under the background of current energy transformation, carbon dioxide capture, utilization and storage (CCUS) technology is increasingly valued, especially in the field of geothermal power generation, ultra supercritical carbon dioxide as working fluid shows good prospects. However, although the vortex tube applied in the prior art can effectively realize the heating and cooling separation of gas, there are still some significant shortcomings, which limit its application in CCUS ultra supercritical carbon dioxide liquid cooling energy storage geothermal power generation.

[0003] Vortex tube is a device that uses the rotational flow of air or other gas to heat and cool the separation of gas. Its working principle is mainly based on Bernoulli's principle and the characteristics of vortex flow. The basic structure of vortex tube usually includes a cylindrical shell and an internal inlet, gas enters through the inlet to form a vortex flow; as shown in the drawings, the device uses compressed gas to generate cold and hot gas flow, and works based on the vortex effect in fluid dynamics. Figure 6

[0004] The basic working principle of vortex tube is: first, compressed air is injected into the center of the vortex tube at high speed through the nozzle. When the gas passes through the nozzle, it forms a high-speed rotating vortex inside the vortex tube. This vortex divides the gas into two parts: one is the outer layer of gas near the wall, and the other is the inner layer of gas in the center. Due to the centrifugal force of the vortex, the kinetic energy of the outer layer of gas is converted into potential energy, resulting in a decrease in temperature, forming a cold gas flow of -40 degrees; while the kinetic energy of the inner layer of gas increases, the temperature rises, forming a hot gas flow of 127 degrees. One end of the vortex tube (usually the thinner end) will discharge cold gas, while the other end (thicker end) will discharge hot gas. By adjusting the valve on the vortex tube, the ratio of cold and hot gas flow can be controlled. The working principle of vortex tube does not require any external energy input, it completely relies on the conversion of kinetic energy of compressed gas to achieve cold and hot effect. The efficiency of vortex tube and the temperature of the cold and hot gas flow generated depend on many factors, including the pressure, temperature of the input gas, the design of the nozzle, and the material and size of the vortex tube.

[0005] ​However, the temperature control capability of the conventional vortex tube is limited when dealing with supercritical carbon dioxide, because the existing vortex tube mostly uses air or conventional gas as the working medium, and its applicable range and performance parameters may not necessarily meet the high pressure and high temperature characteristics of supercritical carbon dioxide. For supercritical carbon dioxide, the required cooling temperature and pressure conditions are relatively harsh, and the conventional vortex tube may not be able to effectively operate under these conditions, resulting in excessively low gas temperature, which in turn affects the overall thermal efficiency and power generation capacity of the system; due to the lack of appropriate self-heating mechanism in the existing vortex tube, the movement of the gas in the vortex tube mainly depends on the input of external energy, resulting in relatively high energy consumption. Before entering the turbine, the low expansion ratio and enthalpy entropy value of the carbon dioxide will directly lead to a decrease in the energy conversion efficiency of the turbine, increasing the energy consumption in the power generation process. Moreover, the design of the existing vortex tube in terms of gas collision and friction does not fully utilize the advantages of supersonic flow, resulting in low thermal conversion efficiency of the gas, making it difficult to produce sufficient high-temperature and high-pressure gas to drive the efficient operation of the turbine.

[0006] Therefore, the skilled person in the art proposes a CCUS supercritical carbon dioxide liquid cooling energy storage geothermal power generation double vortex self-heating device. Content of the utility model

[0007] In order to solve the above technical problems, the utility model provides a CCUS supercritical carbon dioxide liquid cooling energy storage geothermal power generation double vortex self-heating device to solve the problems proposed in the background art.

[0008] The CCUS supercritical carbon dioxide liquid cooling energy storage geothermal power generation double vortex self-heating device comprises a first vortex assembly, the first vortex assembly is connected through gas-tight screw welding, and a second vortex assembly is arranged, and a Laval nozzle is arranged on the first vortex assembly and the second vortex assembly through gas-tight screw welding.

[0009] Preferably, the first vortex assembly further comprises a female vortex tube serving as a No. 1 pipe body, first communication holes are formed on both sides of the upper end of the female vortex tube, serving as carbon dioxide gas inlets, the female vortex tube is penetrated from top to bottom in the middle part, and the bottom penetration hole serves as a hot gas outlet, and a flange plate is arranged at the bottom of the female vortex tube.

[0010] Preferably, the second vortex assembly further comprises a male vortex tube arranged in the female vortex tube, the male vortex tube is inserted into the penetration hole at the top of the female vortex tube, and the interface is welded, second communication holes are formed on both sides of the upper end of the male vortex tube, serving as carbon dioxide gas inlets.

[0011] Preferably, a Laval nozzle is arranged at the second communication hole through gas-tight screw welding, and the Laval nozzle is further arranged at the first communication hole through gas-tight screw welding, and four Laval nozzles are arranged at the first communication hole and the second communication hole respectively.

[0012] Preferably, the inner and outer walls of the male and female vortex tubes are roughened by a laser.

[0013] Compared with the prior art, the utility model has the beneficial effects that:

[0014] The utility model solves the problems of low carbon dioxide temperature, low expansion ratio, low enthalpy entropy value and high turbine energy consumption of CCUS ultra supercritical carbon dioxide liquid cooling energy storage geothermal power wellhead, and the ultra supercritical carbon dioxide is compressed and collided under high pressure, and the supersonic friction with the metal surface forms high-temperature and high-pressure ultra supercritical expanded gas, which drives the turbine to generate power, improves the turbine power generation efficiency, reduces the turbine gas energy consumption, provides green heating for the city, and promotes the double carbon drive. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the whole structure schematic diagram of the utility model;

[0016] Figure 2 It is the first vortex assembly structure schematic diagram of the utility model;

[0017] Figure 3 It is the second vortex assembly structure schematic diagram of the utility model;

[0018] Figure 4 It is the structure schematic diagram of the Laval nozzle of the utility model;

[0019] Figure 5 It is the working principle schematic diagram of the utility model;

[0020] Figure 6 It is the existing vortex tube schematic diagram.

[0021] In the drawing:

[0022] 100, first vortex assembly;101, female vortex tube;102, first communication hole;103, flange plate;200, second vortex assembly;201, male vortex tube;202, second communication hole;300, Laval nozzle. DETAILED DESCRIPTION

[0023] The embodiment of the utility model will be further described in detail below in combination with the drawings and examples. The following examples are used to illustrate the utility model, but cannot be used to limit the scope of the utility model.

[0024] As shown in the accompanying Figure 1 to the accompanying Figure 5 As shown in the accompanying:

[0025] The utility model provides CCUS ultra supercritical carbon dioxide liquid cooling energy storage geothermal power generation double vortex self heating device, including first vortex subassembly 100, first vortex subassembly 100 passes through gas -tight screw joint, is provided with second vortex subassembly 200, and the gas -tight screw joint of first vortex subassembly 100 and second vortex subassembly 200 all has lavall nozzle 300. Ultra supercritical carbon dioxide is under high pressure through vortex heating device supercritical carbon dioxide compression collision, with the supersonic friction of metal surface, forms high temperature high pressure ultra supercritical expansion gas, promotes turbine generator, improves turbine generator efficiency, reduces turbine gas energy consumption, provides green warmth for city, helps double carbon to promote.

[0026] First vortex subassembly 100 still includes female vortex pipe 101, as a pipe body, the both sides of female vortex pipe 101 upper end are provided with first communication hole 102, as carbon dioxide inlet, female vortex pipe 101 is through from top to bottom middle part, and its bottom through -going port is as hot gas outlet, and flange plate 103 is installed at the bottom of female vortex pipe 101.

[0027] Second vortex subassembly 200 still includes male vortex pipe 201 that is arranged in the female vortex pipe 101, and male vortex pipe 201 is inserted from the top through -going port of female vortex pipe 101, and the interface is welded, and the both sides of male vortex pipe 201 upper end are provided with second communication hole 202, as carbon dioxide inlet.

[0028] Lavall nozzle 300 is welded in first communication hole through gas -tight screw joint, and four lavall nozzles 300 are welded in first communication hole 102 and second communication hole 202 respectively. Lavall nozzle is used for increasing gas flow velocity to supersonic speed, so that gas flow, gas molecule collision compression increases, and gas and pipe wall friction heat generation are increased. At the same time through gas -tight screw joint mode, the welding sealing effect and firm degree are better. The principle of lavall pipe is that the compressible fluid of subsonic speed reaches sonic speed at the narrowest place through converging structure, and then the compressible fluid reaching sonic speed continues to accelerate through expanding structure, reaches supersonic speed.

[0029] Working process: The outlet pressure of CCUS ultra-supercritical carbon dioxide liquid cooling energy storage geothermal power well is 70 megapascals at 200 degrees Celsius, and the medium-temperature high-pressure supercritical carbon dioxide enters the mother vortex tube 101, and the two sides of the Laval nozzle 300 are high-pressure injected, the airflow rotates at high speed along the inner wall of the mother vortex tube 101 and the outer wall of the public vortex tube 201, the gas molecules collide with each other and rub against the metal, generating high heat along the outlet. At the same time, the outlet pressure of the CCUS ultra-supercritical carbon dioxide liquid cooling energy storage geothermal power well is 70 megapascals at 200 degrees Celsius, and the medium-temperature high-pressure supercritical carbon dioxide enters the public vortex tube 201, and the supercritical carbon dioxide gas is injected by the two sides of the Laval nozzle 300 at high pressure, and rotates at high speed along the wall of the public vortex tube 201, and the gas molecules collide with each other and rub against the metal, generating high heat along the outlet.

[0030] Working principle: Based on the vortex compression collision and metal friction effect in fluid dynamics, the carbon dioxide geothermal wellhead pressure is 60-80 megapascals, the temperature is 200°C, the casing 244.5MM is a special casing, and the flow rate of supercritical carbon dioxide in the 244.5 casing per second needs to use the mass flow and the cross-sectional area of the pipeline. The given data is: mass flow: 1320 tons / hour; pressure: 70 megapascals; temperature: 200 degrees Celsius; pipeline diameter: 244.5 millimeters.

[0031] First, convert the mass flow from tons / hour to kilograms / second: 1320 tons / hour ≈ 366.67 kilograms / second;

[0032] Then calculate the cross-sectional area of the pipeline. The pipeline diameter is 244.5 millimeters, which is 0.2445 meters. The cross-sectional area A of a circular tube is given by:

[0033]

[0034] Where d is the diameter of the pipeline. Substitute the diameter value:

[0035]

[0036] A = π(r) 2 = π(0.12225) 2 = π × 0.0149650625

[0037] ≈ 0.0471

[0038] Use the mass flow and cross-sectional area to calculate the flow rate v:

[0039]

[0040] Therefore, the flow rate of supercritical carbon dioxide in the 244.5 casing is about 7784.92 meters per second. The supercritical carbon dioxide (200°C) of the carbon dioxide power well entering the double vortex heater collides and rubs against the wall of the vortex male and female pipes, which generates high temperature, and the temperature can reach about 1500°C, or even in some cases, the temperature can be as high as 2000°C.

[0041] Example two: this example is basically the same as the previous example, the difference is that the inner and outer walls of the male vortex pipe 201 and the female vortex pipe 101 are processed by a laser to increase the friction and friction temperature, and to enhance the strength of the metal surface. Laser processing technology of metal surface has many benefits, mainly including: improving the surface properties and physical properties of the material, improving the wear resistance, corrosion resistance and fatigue resistance of the parts. Through laser processing, a modified layer with specific properties can be formed on the metal surface, thereby improving the overall performance of the metal. Laser passivation technology can form a dense oxide or nitride layer, effectively preventing the metal from contacting the corrosive medium in the environment, enhancing the corrosion resistance of the metal, and improving the performance and service life of the metal product.

[0042] Importantly, it should be noted that the constructions and arrangements of the present application shown in the various example embodiments are illustrative only. Although only a few embodiments have been described in detail in this disclosure, many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters, mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter described in this application. For example, elements shown as integrally formed can be constructed of multiple parts or elements, the position of elements can be reversed or otherwise varied, and the nature or number of discrete elements or positions can be altered or varied. Accordingly, all such modifications are intended to be included within the scope of the present inventive subject matter. The order or sequence of any process or method steps can be changed or re-sequenced without departing from the generality of the application. In the claims, any "means plus function" clause is intended to cover the structures described herein as performing the recited functionality, and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes, and omissions can be made in the design, operating conditions, and arrangement of the example embodiments without departing from the scope of the present inventive subject matter. Accordingly, the present inventive subject matter is not limited to particular embodiments described, but extends to various modifications that nevertheless fall within the scope of the appended claims.

[0043] Furthermore, in the interest of providing a concise description of illustrative embodiments, not all features of an actual implementation can be described (i.e., those unrelated to the best mode of practicing the present inventive subject matter, or those unrelated to any implementation of the present inventive subject matter).

[0044] It is to be understood that the development making of the numerous implementation decisions during the development of any embodiment will be made by the engineers and designers of the application. These development efforts might be complex and time consuming, but such is the normal

[0045] It should be noted that the above examples are only used to illustrate the technical solutions of the present application but not limit the present application. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or equivalently replaced without departing from the spirit and scope of the present application, and all modifications and equivalent replacements should be included in the scope of the claims of the present application.

Claims

1. A double-vortex self-heating device for CCUS ultra-supercritical carbon dioxide liquid-cooled energy storage geothermal power generation, characterized in that: Including first vortex assembly (100), first vortex assembly (100) is provided with second vortex assembly (200) by airtight screw welding, first vortex assembly (100) and second vortex assembly (200) are airtight screw welded with Laval nozzle (300) on both.

2. The CCUS ultra-supercritical carbon dioxide liquid-cooled energy storage geothermal power generation double-vortex self-heating device according to claim 1, characterized in that: The first vortex assembly (100) further comprises a female vortex tube (101) as a No. 1 pipe body, first communication holes (102) are formed on both sides of the upper end of the female vortex tube (101) as carbon dioxide gas inlets, the female vortex tube (101) is through from top to bottom in the middle, and the bottom through hole is used as a hot gas outlet, and a flange (103) is installed at the bottom of the female vortex tube (101).

3. The CCUS ultra-supercritical carbon dioxide liquid-cooled energy storage geothermal power generation double-vortex self-heating device according to claim 2, characterized in that: The second vortex assembly (200) further comprises a male vortex tube (201) arranged inside the female vortex tube (101), the male vortex tube (201) is inserted from the top through hole of the female vortex tube (101), and the interface is welded, second communication holes (202) are formed on both sides of the upper end of the male vortex tube (201) as carbon dioxide gas inlets.

4. The CCUS ultra-supercritical carbon dioxide liquid-cooled energy storage geothermal power generation double-vortex self-heating device of claim 3, wherein: The second communication hole is welded with a Laval nozzle (300) by airtight wire screw, the Laval nozzle (300) is also welded in the first communication hole by airtight wire screw, and four Laval nozzles (300) are welded in the first communication hole (102) and the second communication hole (202) respectively.

5. The CCUS ultra-supercritical carbon dioxide liquid-cooled energy storage geothermal power generation double-vortex self-heating device of claim 3, wherein: The inner and outer walls of the male vortex tube (201) and the female vortex tube (101) are roughened by a laser.

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