A rotary fluid heating device

Abstract

The application discloses a rotary fluid heating device, both ends of a driving shaft are rotatably connected in a bearing seat, at least one rotating disc is installed in the middle of the driving shaft, a stator sleeve is installed on the driving shaft, the stator sleeve is arranged on the outer circumferential side of the rotating disc, a gap is arranged between the stator and the rotating disc, and the gap forms a closed space, at least one liquid inlet is arranged on one side end cover of the stator, at least one liquid outlet is arranged on the other side end cover of the stator, the liquid inlet and the liquid outlet are communicated with the closed space, and closed fluid is arranged in the closed space. The motor drives the rotor to rotate, part of the fluid in the closed space is converted into high-speed rotating fluid, the kinetic energy is converted into heat energy by using the cavitation phenomenon, the fluid is heated to the required temperature, the device can be used in places requiring hot water and steam-water mixture mixed with water vapor, and the device can also solve the problem that liquid, such as flammable, explosive and toxic liquid, cannot be heated by using open fire and electricity, the pollution emission generated by using fuel heating is eliminated, and the safety and reliability are improved.

Description

A rotating fluid heating device Technical Field

[0001] This invention relates to heating equipment for places using hot water and steam mixtures for heating, cleaning, etc., and can also be used in the fields of petroleum, chemical, and large machinery for heating flammable, explosive, and highly toxic liquids. Specifically, it relates to a rotating fluid heating device. Background Technology

[0002] Cavitation in liquids refers to the formation, development, and collapse of vapor or cavitation bubbles within the liquid or at the liquid-solid interface when the local pressure inside the liquid decreases. Cavitation formation is related to the pressure drop caused by flow or sound field in the liquid field. When the pressure in the field decreases and falls below the critical pressure (usually the saturated vapor pressure), cavitation occurs in the flow field, and gas nuclei grow into cavitation structures.

[0003] Bernoulli's equation:

[0004] Essentially, it is the manifestation of the law of conservation of energy in steady flow of an ideal fluid. For the device of this invention, compared to the first two terms, the change in the third phase is negligible and can be simplified to Bernoulli's equation: In other words, for a high-speed rotating fluid, the greater the speed, the lower the pressure at that point.

[0005] In the formula: p—pressure at a point in the closed fluid; ρ—density of the fluid at that point; g—acceleration due to gravity; h—relative height of the point, representing the potential energy at that point; υ—velocity of the fluid at that point.

[0006] The water vapor pressure *p* in a saturated state (equilibrium of the gas and liquid phases of water under sealed conditions) is related to the corresponding temperature. At 10℃, *p* = 1.2262 kPa, and the density *ρ* = 0.0094 kg / m³. 3 At 20℃, p = 2.3346 kPa, density ρ = 0.01719 kg / m³ 3 At 30℃, p = 4.2474 kPa, density ρ = 0.03036 kg / m³ 3 At 100℃, p = 101.33 kPa, density ρ = 0.597 kg / m³ 3 At 145℃, p = 415.7 kPa, density ρ = 2.238 kg / m³ 3 .

[0007] The latent heat of phase change of water and water vapor is approximately 2260 kJ / kg.

[0008] It can be used for heating in northern winters, eliminating environmental pollution caused by using fuels such as coal and natural gas, saving energy and reducing usage costs.

[0009] This method can be applied to the cleaning of oil storage tanks. During the long-term storage of oil products, especially crude oil, small amounts of mechanical impurities, sand, mud, heavy metal salts, and heavy oil components such as paraffin and asphalt will naturally settle and accumulate at the bottom of the tank due to their density difference, forming a thick, black, gelatinous layer—tank sludge. While it is a highly concentrated pollutant that can pose a significant environmental hazard if not properly handled, it is also a valuable recyclable and reusable resource. Therefore, cleaning oil tanks has always been a challenging aspect of the petroleum storage and transportation industry.

[0010] Industries such as petroleum, chemical, and large machinery often require heating of fuels, lubricating oils, and flammable, explosive, and highly toxic substances during operation, especially in winter. Using open flames for heating pollutes the environment, and the heating process and temperature are difficult to control precisely. Electric heating presents challenges such as poor safety, high local temperatures, and potential alteration of the quality of the heated medium. Summary of the Invention

[0011] Therefore, the present invention provides a rotating fluid heating device to solve the above-mentioned problems in the prior art.

[0012] To achieve the above objectives, the present invention provides the following technical solution:

[0013] According to a first aspect of the present invention, a rotating fluid heating device includes a bearing housing, a rotating disk, a stator, and a drive shaft; both ends of the drive shaft are rotatably connected in the bearing housing, at least one of the rotating disks is mounted in the middle of the drive shaft, the stator is sleeved on the drive shaft, the stator is sleeved on the outer periphery of the rotating disk, and a gap is provided between the stator and the rotating disk, the gap forming a sealed space, one end cap of the stator is provided with at least one liquid inlet, the other end cap of the stator is provided with at least one liquid outlet, both the liquid inlet and the liquid outlet are in communication with the sealed space, and a sealed fluid is disposed inside the sealed space.

[0014] Furthermore, multiple rotating disks are spaced apart on the drive shaft, and each rotating disk has a disc-shaped structure.

[0015] Furthermore, it also includes a first groove, which is arranged on both sides and the outer circumference of the rotating disk.

[0016] Furthermore, the first groove is hemispherical, circular, rectangular, or elliptical.

[0017] Furthermore, it also includes a mechanical seal, which is provided between the two end faces of the stator and the drive shaft.

[0018] Furthermore, the stator includes end caps and a tube. There are two end caps, which are spaced apart and connected by the tube. Each end cap is fitted and sealed on the drive shaft. The tube and the two end caps together form the sealed space.

[0019] Furthermore, it also includes an O-ring seal, which is used to seal the end cap and the tube.

[0020] Furthermore, it also includes a second groove, which is provided on the inner circumferential surface of the end cover of the stator and the inner circumferential surface of the tubular tube in the middle. The second groove is hemispherical, circular, rectangular or elliptical.

[0021] Furthermore, the end cap of the stator is fixed to the tube by a tie rod, bolts, and nuts.

[0022] Furthermore, it also includes a rolling bearing, through which the drive shaft and the bearing housing are connected.

[0023] Furthermore, the two bearing housings that fix the drive shaft are set independently from the stator. A rolling bearing is provided between the drive shaft and the bearing housing. The connecting surfaces of the two bearing housings supporting the bearing need to be machined simultaneously to achieve dynamic balance of the high-speed rotating rotor.

[0024] Furthermore, a sealed space and inlet / outlet can be provided outside the bearing contact surface on the bearing housing to allow water to be circulated to cool the bearing housing, reduce the temperature of the bearing when it rotates at high speed, and enable the bearing to operate stably for a long time.

[0025] The present invention has the following advantages:

[0026] 1. It can heat flammable, explosive, and highly toxic liquids directly without open flame or electricity.

[0027] 2. By using power machinery to rotate the fluid, a high-speed rotating fluid is generated. Utilizing the cavitation phenomenon of the fluid, kinetic energy is converted into heat energy, eliminating pollutant emissions and improving safety and reliability.

[0028] 3. By utilizing the phenomenon of liquid cavitation, heating efficiency is improved and energy consumption is reduced.

[0029] 4. For winter heating in northern regions, rotating fluid heating devices with varying heating capacities can be manufactured based on the number of users in a residential area. Adding a temperature monitoring system and automatically starting and stopping the heating devices reduces heating pipes and pipe losses, lowering heating costs and eliminating various forms of pollution. Attached Figure Description

[0030] Figure 1 is a cross-sectional structural diagram of a rotating fluid heating device provided in some embodiments of the present invention.

[0031] Figure 2 is a schematic diagram of the rotor mechanism of a rotating fluid heating device provided in some embodiments of the present invention.

[0032] In the diagram: 1. Bearing housing; 11. Rolling bearing;

[0033] 2. Rotor; 21. Drive shaft; 22. Rotating disk;

[0034] 3. Mechanical seal;

[0035] 4. Stator; 41. End cap; 42. Tube; 43. O-ring seal;

[0036] 5. Closed fluid; 6. Inlet; 7. Outlet. Detailed Implementation

[0037] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. 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.

[0038] Example 1

[0039] As shown in Figures 1 and 2, a rotating fluid heating device according to a first aspect embodiment of the present invention includes a bearing housing 1, a rotating disk 22, a stator 4, and a drive shaft 21. Both ends of the drive shaft 21 are rotatably connected to the bearing housing 1. At least one rotating disk 22 is installed in the middle of the drive shaft 21. The stator 4 is sleeved on the drive shaft 21 and is sleeved on the outer periphery of the rotating disk 22. A gap is provided between the stator 4 and the rotating disk 22, and the gap forms a sealed space. At least one liquid inlet 6 is provided on one end cap of the stator 4, and at least one liquid outlet 7 is provided on the other end cap of the stator 4. Both the liquid inlet 6 and the liquid outlet 7 are in communication with the sealed space. A sealed fluid 5 is provided inside the sealed space.

[0040] In the above embodiments, it should be noted that the rotating disk 22 and the drive shaft 21 together constitute the rotor 2.

[0041] The technical effects achieved by the above embodiments are as follows: This device uses a motor to drive the rotor to rotate, converting part of the fluid in the closed space into a high-speed rotating fluid. By utilizing the cavitation phenomenon, kinetic energy is converted into thermal energy to heat the fluid to the required temperature. It can be used in places that require hot water and steam-water mixtures. It can also solve the problem of heating flammable, explosive, and highly toxic liquids that cannot be heated by open flames or electricity, eliminate pollution emissions generated by using fuel heating, and improve safety and reliability.

[0042] Example 2

[0043] As shown in Figures 1 and 2, a rotating fluid heating device includes all the contents of Embodiment 1. In addition, multiple rotating disks 22 are spaced apart on the drive shaft 21, and the rotating disks 22 have a disc-shaped structure.

[0044] Optionally, it also includes a first groove, with the first groove arranged on both sides and the outer circumference of the rotating disk 22.

[0045] Optionally, the first groove can be hemispherical, circular, rectangular, or elliptical.

[0046] The technical effect achieved by the above embodiment is that when the rotor 2 rotates, the fluid in the first groove follows the movement and has a very high speed. When its pressure drops to the local saturated vapor pressure of the fluid, cavitation occurs.

[0047] Example 3

[0048] As shown in Figures 1 and 2, a rotating fluid heating device includes all the contents of Embodiment 2, and further includes a mechanical seal 3. The mechanical seal 3 is provided between the two end faces of the stator 4 and the drive shaft 21. In addition, other types of sealing rings can be provided to prevent leakage of the sealed fluid and form a sealed fluid between the stator 4 and the rotor 2.

[0049] Optionally, the stator 4 includes end caps 41 and tubes 42. There are two end caps 41, which are spaced apart and connected by tubes 42. The end caps 41 are all fitted and sealed on the drive shaft 21. The tubes 42 and the two end caps 41 together form a sealed space.

[0050] Optionally, an O-ring 43 is also included, which is used to seal the end cap 41 and the tube 42.

[0051] Optionally, a second groove is also included. The second groove is provided on the inner side of the end cap 41 of the stator 4 and the inner circumferential surface of the tubular tube 42 in the middle. The second groove is hemispherical, circular, rectangular or elliptical, and the fluid velocity stored in it is zero.

[0052] Example 4

[0053] As shown in Figures 1 and 2, a rotating fluid heating device includes all the contents of Embodiment 3. In addition, the end cap 41 of the stator 4 and the tube 42 are fixed by a tie rod, bolts and nuts.

[0054] The technical effects achieved by the above embodiments are as follows: the end cap 41 and the tube 42 are stably fixed through the above method, and in addition, disassembly, installation and maintenance are facilitated.

[0055] Example 5

[0056] As shown in Figures 1 and 2, a rotating fluid heating device includes all the contents of Embodiment 4, and further includes a rolling bearing 11, with the drive shaft 21 connected to the bearing housing 1 via the rolling bearing 11.

[0057] It should be noted that: the two bearing seats 1 of the fixed drive shaft 21 are set independently from the stator 4. A rolling bearing is provided between the drive shaft 21 and the bearing seat 1. The connecting surfaces of the two bearing seats 1 supporting the bearing need to be machined at the same time so that the high-speed rotating rotor 2 can achieve dynamic balance. A sealing space and inlet / outlet can be provided on the bearing contact surface of the bearing seat 1. Water is passed through to cool the bearing seat 1, reduce the temperature of the bearing when it rotates at high speed, and enable the bearing to operate stably for a long time.

[0058] Example 6

[0059] As shown in Figures 1 and 2, a rotating fluid heating device includes all the contents of Embodiment 5. In addition, the rotating fluid in the groove of the high-speed rotating rotor 2 generates water vapor bubbles due to cavitation. Since the specific gravity is much less than that of water, the pressure of the water vapor bubbles increases instantaneously and enters the closed fluid in the middle. The cavitation vapor bubbles collapse, generating an impact effect and releasing a large amount of phase change heat, which heats the fluid in the closed space.

[0060] Optionally, the fluid velocity in the grooves on the inner circumferential surfaces of the end caps 41 of the stator 4 and the inner circumferential surface of the intermediate tubular connecting section is zero, and its pressure is greater than that of the intermediate fluid, thereby disturbing, rubbing, mixing and heating the intermediate fluid.

[0061] In the description of this invention, it should be understood that the terms "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0062] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0063] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0064] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0065] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

[0066] In the description of this specification, the references to terms such as "Embodiment 1," "Embodiment 2," "Example," "Specific Example," or "Some Examples," etc., indicate that the specific method, apparatus, or feature described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, methods, apparatus, or features described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0067] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A rotating fluid heating device, characterized in that, The system includes a bearing housing (1), a rotating disk (22), a stator (4), and a drive shaft (21). Both ends of the drive shaft (21) are rotatably connected to the bearing housing (1). At least one rotating disk (22) is mounted on the middle of the drive shaft (21). The stator (4) is sleeved on the drive shaft (21) and fitted onto the outer periphery of the rotating disk (22). A gap is provided between the stator (4) and the rotating disk (22), forming a sealed space. One end cap of the stator (4) has at least one liquid inlet (6), and the other end cap of the stator (4) has at least one liquid outlet (7). Both the liquid inlet (6) and the liquid outlet (7) communicate with the sealed space. The sealed space is filled with a sealed fluid (5); the stator (4) includes an end cap (41) and a tube (42). There are two end caps (41), which are spaced apart and connected by the tube (42). The end caps (41) are all fitted and sealed on the drive shaft (21). The tube (42) and the two end caps (41) together form the sealed space; it also includes a first groove and a second groove. The first groove is arranged on both sides and the outer circumference of the rotating disk (22); the second groove is opened on the inner side of the end cap (41) of the stator (4) and the inner circumference of the tubular tube (42) in the middle. The second groove is hemispherical.

2. The rotating fluid heating device according to claim 1, characterized in that, The rotating disk (22) has a disc-shaped structure.

3. The rotating fluid heating device according to claim 1, characterized in that, The first groove is hemispherical.

4. The rotating fluid heating device according to claim 1, characterized in that, It also includes a mechanical seal (3), which is provided between the two end faces of the stator (4) and the drive shaft (21).

5. The rotating fluid heating device according to claim 1, characterized in that, It also includes an O-ring (43), which is used to seal the end cap (41) and the tube (42).

6. The rotating fluid heating device according to claim 1, characterized in that, The end cap (41) of the stator (4) is fixed to the tube (42) by a tie rod, bolt and nut.

7. The rotating fluid heating device according to claim 1, characterized in that, It also includes a rolling bearing (11), through which the drive shaft (21) and the bearing housing (1) are connected.

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