Impeller hybrid phase change saturation heat storage tank and water tank truck

Abstract

The invention discloses an impeller mixed type phase change saturation heat storage tank and a water tank truck, and belongs to the technical field of heat supply equipment. The heat storage tank comprises a tank body, the turbulent flow mechanism comprises a plurality of impellers and a turbulent flow shaft, the multiple impellers are arranged in the tank body and connected to the turbulent flow shaft, and the turbulent flow shaft is arranged in the length direction of the tank body; the gas distribution pipes are used for introducing external gas or liquid into the tank body, the gas distribution pipes are arranged adjacent to different impellers, spraying holes are formed in the gas distribution pipes, the spraying holes face the adjacent impellers, and gas sprayed by the spraying holes is used for enabling the impellers to rotate. When steam is filled to heat low-temperature water in the tank, the steam is sprayed into the impeller from the spraying holes of the gas distribution pipe, the impeller can rotate through sprayed gas flow, the rotating impeller can push water in the tank body and enable liquid in different areas to be mixed, the whole tank body does not have a low-temperature dead area, gas and liquid phases can be fully mixed, and the gas-liquid mixing effect is good. And the problem of non-uniform gas-liquid two-phase heat transfer in the prior art is thoroughly solved.

Description

Technical Field

[0001] The present invention relates to the technical field of heating equipment, and particularly relates to an impeller-mixed phase-change saturated heat storage tank and a water tank truck. Background Art

[0002] Water, as a commonly used sensible heat storage medium, has a large heat capacity and can obtain a large heat storage density under large temperature differences and pressures. First, demineralized water with a preset mass is filled into the heat storage tank, and then high-temperature and high-pressure steam is filled into the demineralized water for heating and pressurization to become high-temperature saturated water. Herein, high-temperature saturated water refers to a state in which liquid water and its steam reach dynamic equilibrium at a specific temperature and pressure. When high-temperature saturated water is reached, the high-temperature saturated water remains in a liquid state. When the valve on the user side is opened, the pressure on the user side is relatively low, and high-temperature and high-pressure steam is released through the pressure difference between the user side and the tank. The steam is released in the direction of the lower pressure on the user side.

[0003] However, when steam is filled to heat the low-temperature demineralized water in the tank, due to the fast flow rate of the steam jet, when the steam is mixed with the demineralized water, the contact area between the steam jet and the demineralized water is small, the gas-liquid two-phase distribution is obvious, and the velocity attenuation of the steam jet in the liquid phase is large, resulting in non-uniform gas-liquid mixing in the entire tank body, and the gas phase temperature and pressure are both higher than those of the liquid phase. That is, the heat exchange rate by only injecting steam onto the water surface is slow, and there is still a large temperature difference between the gas-liquid phases. Moreover, because the gas distribution pipes of traditional tank trucks are only distributed in the middle part of the tank truck, and there are no gas distribution pipes in the two end head parts of the tank truck, this leads to a high temperature in the middle part of the tank truck where the gas distribution pipes inject steam, and a low temperature in the front and rear end head parts of the tank truck where there are no gas distribution pipes injecting steam. Also, due to the poor fluidity of the water body, there is a large temperature difference between the front and rear parts and the middle part of the tank truck, and finally, it is easy to generate a dead zone with a lower temperature in the tank body. Summary of the Invention

[0004] The present invention provides an impeller-mixed phase-change saturated heat storage tank and a water tank truck, aiming to solve the problem of uneven heat transfer between gas and liquid phases in the prior art, so as to prevent a dead zone with a lower temperature from appearing in the tank body.

[0005] In the first aspect of the present invention, an impeller-mixed phase-change saturated heat storage tank is provided, including:

[0006] A tank body;

[0007] A flow disturbing mechanism, the flow disturbing mechanism includes a flow disturbing shaft and a plurality of impellers arranged on the flow disturbing shaft. The flow disturbing shaft is arranged along the length direction of the tank body, and the plurality of impellers are located inside the tank body;

[0008] Multiple air distribution pipes, which are used to introduce external gas or liquid into the tank body. The multiple air distribution pipes are located inside the tank body and are arranged adjacent to different impellers. The air distribution pipes are provided with spray holes, and the spray holes face the blade surface of the nearest impeller. The jet range of the spray holes at least partially covers the blade surface of the nearest impeller, and the jet of the spray holes is used to rotate the impeller.

[0009] In some embodiments of the first aspect, the multiple air distribution pipes are all arranged perpendicular to the length direction of the tank body, the spray holes are located on the side walls of the air distribution pipes, and the spray holes are aligned with the windward surface of the impeller.

[0010] In some embodiments of the first aspect, the tank body has opposite first and second ends;

[0011] The multiple air distribution pipes adjacent to the first end and the multiple air distribution pipes adjacent to the second end are arranged facing each other or back to back.

[0012] In some embodiments of the first aspect, the spray holes of the multiple air distribution pipes adjacent to the first end face the first end;

[0013] The spray holes of the multiple air distribution pipes adjacent to the second end face the second end.

[0014] In some embodiments of the first aspect, the impeller includes multiple arc-shaped blades;

[0015] The arc-shaped blades have opposite first and second sides;

[0016] The thickness of the first side is thicker than that of the second side, and the surfaces of the first side and the second side are smoothly transitioned;

[0017] The first side is arranged adjacent to the air distribution pipe.

[0018] In some embodiments of the first aspect, the surface of the arc-shaped blade is a rough surface.

[0019] In some embodiments of the first aspect, adjacent air distribution pipes are staggered from each other.

[0020] In some embodiments of the first aspect, the air distribution pipe includes a horizontal pipe body, a first vertical pipe body and a second vertical pipe body;

[0021] The horizontal pipe body is used for introducing external gas or liquid;

[0022] Both ends of the horizontal pipe body are respectively communicated with the first vertical pipe body and the second vertical pipe body, and the spray holes are opened on both the first vertical pipe body and the second vertical pipe body.

[0023] In some embodiments of the first aspect, the spoiler shaft is an injection pipe for accessing gas or water, and the injection pipe is rotatably connected to the impeller.

[0024] In some embodiments of the first aspect, the spoiler shaft is a rotating shaft, and the rotating shaft is fixedly connected to a plurality of the impellers;

[0025] The spoiler mechanism further includes a generator and a storage battery; the rotating shaft is in transmission connection with the generator, and the generator is electrically connected to the storage battery.

[0026] A second aspect of the present invention provides a water tanker, including:

[0027] The impeller mixing type phase change saturated heat storage tank described in the first aspect;

[0028] A transport vehicle, and the impeller mixing type phase change saturated heat storage tank is fixed on the transport vehicle.

[0029] It can be seen from the above technical solutions that the present invention has the following advantages:

[0030] This embodiment provides an impeller mixing type phase change saturated heat storage tank. Since a spoiler mechanism and a plurality of air distribution pipes are provided in the tank body, the impellers of the spoiler mechanism are connected to the spoiler shaft, the spoiler shaft is arranged along the length direction of the tank body, and a plurality of air distribution pipes introduce external gas or liquid into the tank body. The plurality of air distribution pipes are arranged adjacent to different impellers, and spray holes are provided on the air distribution pipes, and the spray holes face the adjacent impellers. When steam is filled to heat the low-temperature water in the tank, the steam sprays from the spray holes of the air distribution pipes towards the impellers, and the ejected air flow will cause the impellers to rotate; on the one hand, the rotating impellers will stir the water body and push the water body in the tank to flow, mixing the liquids in different regions and avoiding the appearance of dead zones with lower temperatures in the tank. On the other hand, the impellers rotating in the water body will intermittently cut the steam flow. During this process, a part of the steam is cut into multiple small steam clusters by the impellers, a part of the steam is rebounded by the impeller blades into steam flows with different ejection directions, and a part of the steam will pass through the impellers. That is, the shape and distribution of the steam clusters are adjusted by the rotating impellers. Combining with the intervals of the impellers and the angles of the blades, the specific shape and reflection angle of the steam clusters of the steam flow can be further adjusted, thereby further affecting the shape and distribution of the steam clusters. The steam redistributed under the influence of the impellers, combined with the disturbed liquid phase, can achieve relatively sufficient mixing and uniformity, strengthening the mixing of the two phases, making the gas-liquid two-phase mixing more sufficient and the temperature more uniform, and solving the problem of uneven heat transfer between the gas-liquid two phases in the prior art. Description of the Drawings

[0031] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0032] Figure 1 Schematic diagram of the overall structure cross-section provided by the prior art;

[0033] Figure 2 Schematic diagram of the longitudinal cross-section of the overall structure of the impeller-mixed phase-change saturated heat storage tank provided in Embodiment 1 of the present invention;

[0034] Figure 3 Schematic diagram of the transverse cross-section of the overall structure of the impeller-mixed phase-change saturated heat storage tank provided in Embodiment 1 of the present invention;

[0035] Figure 4 Schematic diagram of the layout structure of the air distribution pipe and the impeller provided in Embodiment 1 of the present invention;

[0036] Figure 5 Schematic diagram of the impeller and the air flow provided in Embodiment 1 of the present invention;

[0037] Figure 6 Schematic diagram of the application process provided in Embodiment 1 of the present invention;

[0038] Figure 7 Schematic diagram of the control mechanism provided in Embodiment 1 of the present invention;

[0039] Figure 8 Schematic diagram of the longitudinal cross-section of the overall structure of the impeller-mixed phase-change saturated heat storage tank provided in Embodiment 2 of the present invention;

[0040] Figure 9 Schematic diagram of the transverse cross-section of the overall structure of the impeller-mixed phase-change saturated heat storage tank provided in Embodiment 2 of the present invention;

[0041] Figure 10 Schematic diagram of the structure of the air distribution pipe provided in Embodiment 2 of the present invention.

[0042] Reference numerals:

[0043] 1. Tank body; 10. First end; 11. Second end; 12. Injection pipe; 13. Heat outlet pipe; 14. Head; 15. Anti-surge plate; 16. Drain port; 17. Heat preservation area; 2. Turbulence mechanism; 20. Impeller; 200. Arc-shaped blade; 2000. First side; 2001. Second side; 21. Turbulence shaft; 21a. Rotating shaft; 21b. Injection pipe shaft; 22. Generator; 3. Air distribution pipe; 30. Spray hole; 31. Horizontal pipe body; 32. First vertical pipe body; 33. Second vertical pipe body; 4. Control mechanism; 40. Water level sensor; 41. Steam pressure sensor; 42. Braking device; 43. Controller; a. Airflow. Detailed implementation mode

[0044] In the prior art, as Figure 1 shown, the currently used mobile heating device includes a water storage tank and a transportation device. The water storage tank is fixed on the transportation device. An air distribution pipe 3 is arranged inside the water storage tank. An injection pipe 12 is connected near the top inside the water storage tank. A heat outlet pipe 13 is connected to the top of the water storage tank. The prior art has the following problems: First, when steam is filled, heat exchange can only be carried out on the liquid phase, and the remaining heat in the gas phase on the upper side of the tank body cannot be utilized simultaneously; Second, the steam jet velocity in the liquid phase decays greatly, and dead zones with relatively low temperatures are likely to occur at the two side heads of the tank body; Third, the current position of the steam supply / discharge pipe has not reached the maximum utilization space; Fourth, the mechanical energy of the high-speed steam just coming out of the air distribution pipe is not fully utilized; Fifth, when discharging steam, since the heat and mass transfer process between the gas and liquid phases only occurs on the horizontal plane, when the pressure drops too fast, the temperature has not yet dropped to the saturation temperature; Sixth, currently, the tank truck control cabinet and the electric valve components need to be externally powered for operation.

[0045] To solve the above problems, the embodiment of the present invention provides an impeller mixing type phase change saturated heat storage tank and a water tank truck, achieving the purposes of uniform gas-liquid mixing, no longer having dead zones with relatively low temperatures inside the tank body, and combined heat and power generation.

[0046] In order to make the invention purpose, features, and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the embodiments described below are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0047] An impeller mixing type phase change saturated heat storage tank provided by the first aspect of the present invention includes:

[0048] Tank body;

[0049] The flow disturbing mechanism includes a flow disturbing shaft and a plurality of impellers arranged on the flow disturbing shaft. The flow disturbing shaft is arranged along the length direction of the tank body, and the plurality of impellers are located inside the tank body;

[0050] A plurality of air distribution pipes are used to introduce external gas or liquid into the tank body. The plurality of air distribution pipes are located inside the tank body. The plurality of air distribution pipes are arranged adjacent to different impellers. Spray holes are provided on the air distribution pipes. The spray holes face the blade surface of the nearest impeller. The jet range of the spray holes at least partially covers the blade surface of the nearest impeller. The jet of the spray holes is used to rotate the impeller.

[0051] Among them, the plurality of air distribution pipes are arranged adjacent to different impellers, that is, an air distribution pipe is arranged near each impeller, so as to realize the one-to-one correspondence arrangement of the air distribution pipe and the impeller. The air distribution pipe can be aligned with the front or the side of the impeller. The core purpose is to ensure that each impeller can be affected by the gas ejected from the spray holes of the air distribution pipe and rotate.

[0052] During the working process of this embodiment, when it is necessary to charge the tank body with steam for heat storage, first inject enough demineralized low-temperature water of a certain mass into the tank body, and then introduce the external high-temperature steam into the air distribution pipe. The high-temperature steam will finally be ejected from the spray holes. The high-temperature steam ejected from the spray holes serves as a power source to rotate the impeller. The impeller will make the high-temperature steam fully mix with the water in the tank body until it is heated and pressurized into high-temperature saturated water; the heat is stored through the saturated water. When it is necessary to supply steam and heat to the user side, when reaching the user side, due to the lower pressure on the user side, the tank body is connected to the user side. After the valve on the user side is opened, the pressure difference will cause the high-temperature steam to be released in the direction of the lower pressure on the user side.

[0053] It should be noted that when the steam jet rotates the impeller, the rotating impeller has at least the following two advantages. On the one hand, the rotation of the impeller can stir the water body, promote the flow of the water body in the tank body, make the liquid in different regions mix evenly, make the water body in the tank body heat up evenly, and there is no dead zone with a lower temperature in the whole tank body; on the other hand, the rotation of the impeller can disturb the water surface, increase the contact area between the high-temperature steam jet and the water, the gas-liquid two-phase distribution is no longer distinct, and the impeller can break up and expand the steam, reduce the flow rate, make the high-temperature steam jet become more small air masses to heat the water body in the tank, and make the gas-liquid mixing more uniform and sufficient.

[0054] The advantages of this embodiment are that, first, the heat transfer and heat exchange between the gas and liquid phases are uniform. Compared with the traditional steam charging structure, on the one hand, the traditional high-temperature steam jet has a fast flow rate, a small contact area with the water phase, a clear distribution of the gas and liquid phases, and a large temperature difference. The heat exchange speed of only spraying steam into the water is slow. On the other hand, due to the long tank body, the distribution of the steam charging pipe is limited by space. When the steam and desalted water are mixed, it is difficult to evenly distribute the water temperature by the steam jet alone. There is still a large gap between the temperature of the gas and liquid phases, resulting in a clear gas phase and uneven mixing. In this scheme, the impeller rotates by high-temperature steam. The impeller rotating in the water body will intermittently cut the steam airflow. In this process, part of the steam is cut into multiple small steam groups by the impeller, part of the steam is rebounded by the impeller blades into steam airflows in different directions, and part of the steam will rush through the impeller, that is, the shape and distribution of the steam air group are adjusted by the rotating impeller, that is, when the impeller rotates, it is like an electric fan. Most of the steam follows the impeller blade streamlines through the impeller, and the part of the steam jet that is rebounded and cut will pass through the impeller with the main steam flow. That is, the impeller will break up the steam flow into large air masses, but due to the high velocity of the forward jet, the escaped air masses will also be carried through the impeller; combined with the spacing of the impeller and the angle of the blades, the specific shape and reflection angle of the steam mass of the steam airflow can be further adjusted, thereby further affecting the shape and distribution of the steam mass. The steam redistributed under the influence of the impeller and the disturbed liquid phase can achieve relatively sufficient mixing and uniformity, strengthen the mixing of the two phases, make the gas-liquid two-phase mixing more sufficient, and make the temperature more uniform. The distribution of high-temperature steam can be reshaped, and at the same time, the gas and liquid can be stirred to increase the mixing of the gas-liquid two-phases, and the steam-water heat exchange can be completed in the shortest time; second, there is no low-temperature dead zone inside the tank body. Compared with the traditional steam filling structure, the low-temperature dead zone is prone to appear inside the tank body. The present solution promotes the flow of water in the tank body through the impeller, so that the water in different areas mix with each other, and the temperature dead zone is not easy to appear in the tank body.

[0055] A second aspect of the present invention provides a water tanker, comprising:

[0056] The impeller hybrid phase change saturated heat storage tank of the first aspect;

[0057] The transport vehicle and the impeller hybrid phase change saturated heat storage tank are fixed on the transport vehicle.

[0058] The advantage of this embodiment is that after the water tank truck is loaded with the impeller hybrid phase change saturated heat storage tank, the gas-liquid mixing effect of the water tank truck is better, there is no problem of large temperature difference between the front, middle and rear parts of the water tank truck, and the heating effect provided by the water tank truck to the user side is better.

[0059] The basic structure and principle of this solution can be known from the above, which will be explained below in conjunction with specific embodiments.

[0060] Embodiment 1

[0061] Please refer to Figures 2 to 7 , Embodiment 1 of the present invention provides an impeller-mixed phase change saturated heat storage tank in the first aspect, including:

[0062] A tank body 1, the tank body 1 is connected with an injection pipe 12 for accessing gas or water and an outlet heat pipe 13 for discharging steam;

[0063] A flow disturbing mechanism 2, the flow disturbing mechanism 2 includes a plurality of impellers 20 and a rotating shaft 21a, that is, the flow disturbing shaft 21 is the rotating shaft 21a, a plurality of impellers 20 are arranged in the tank body 1, a plurality of impellers 20 are fixedly connected to the rotating shaft 21a, and the rotating shaft 21a is arranged along the length direction of the tank body 1;

[0064] A plurality of air distribution pipes 3, a plurality of air distribution pipes 3 are arranged in the tank body 1, a plurality of air distribution pipes 3 are all communicated with the injection pipe 12, a plurality of air distribution pipes 3 are arranged adjacent to different impellers 20, spray holes 30 are arranged on the air distribution pipes 3, the spray holes 30 face the blade surface of the nearest impeller 20, the jet range of the spray holes 30 at least partially covers the blade surface of the nearest impeller 20, and the jet of the spray holes 30 is used to make the impeller 20 rotate.

[0065] During the working process of this embodiment, when it is necessary to charge the tank body 1 with steam for heat storage, low-temperature water is introduced into the tank body 1 by using the injection pipe 12, and then high-temperature steam is introduced into the tank body 1 by using the injection pipe 12. The high-temperature steam will flow through the injection pipe 12 and the air distribution pipes 3 in sequence and finally spray out from the spray holes 30. The high-temperature steam sprayed out from the spray holes 30 serves as a power source to make the impellers 20 and the rotating shaft 21a rotate. The impellers 20 will make the high-temperature steam fully mix with the water in the tank body 1 until heat storage is completed; when it is necessary to discharge steam to supply heat to the user side, the outlet heat pipe 13 is connected to the user side. After the valve on the user side is opened, the pressure difference will cause the high-temperature steam to be released through the outlet heat pipe 13 in the direction of lower pressure on the user side.

[0066] It should be noted that after the flow disturbing shaft 21 is the rotating shaft 21a and a plurality of impellers 20 are fixed on the rotating shaft 21a, the rotations of the plurality of impellers 20 can be superimposed on each other, so that the starting rotation speed of the entire rotating shaft 21a is faster, and the rotation efficiency of converting the kinetic energy of the high-temperature steam into the rotational mechanical energy of the impellers 20 is higher.

[0067] In a specific embodiment, such as Figure 2 and Figure 3As shown in the figure, a feasible structure of the tank body 1 is further provided. A plurality of anti-wave plates 15 are arranged in the tank body 1 at a preset interval. The anti-wave plates 15 are provided with turbulent flow through holes for the rotation shaft 21a to pass through and a plurality of liquid through holes for liquid to flow. The tank body 1 is provided with an injection through hole communicating with the injection pipe 12, a heat outlet through hole communicating with the heat outlet pipe 13, and a sewage outlet 16 for water discharge. Among them, the injection through hole is arranged in the upper part of the tank body 1, that is, the injection pipe 12 penetrates through the injection through hole and is located in the upper part of the tank body 1. The heat outlet through hole is located at the top of the tank body 1, and the sewage outlet 16 is located at the bottom of the tank body 1. An arc-shaped phase change heat preservation layer is further arranged on the outer side of the top of the tank body 1. The arc-shaped phase change heat preservation layer is wrapped into an ellipse so that the phase change heat preservation layer can fit more closely to the tank body 1. The heat outlet pipe 13 penetrates into the phase change heat preservation layer and communicates with the heat outlet through hole, that is, the heat outlet pipe 13 is wrapped in the phase change material of the phase change heat preservation layer.

[0068] Among them, the phase change material refers to a substance that changes its physical state and can provide latent heat under the condition of constant temperature. The process of changing physical properties is called the phase change process. At this time, the phase change material will absorb or release a large amount of latent heat. The phase change material used in this embodiment is solid at normal temperature and gradually changes to liquid when absorbing heat to the phase change temperature, and returns to solid after releasing heat. When the temperature does not exceed the limit heating temperature of the phase change material, the phase change material can be recycled, and the applicable temperature of this material is 180 - 250 °C.

[0069] It should be noted that after the heat outlet pipe 13 is arranged in the above manner, the heat outlet pipe 13 located on the outer side of the top of the tank body 1 can make the liquid filling level and heat storage capacity in the tank reach the maximum value, reduce the entry of moisture into the gas supply pipe, and the heat transferred by the tank body 1 is absorbed and stored by the phase change material area for heat preservation of the heat outlet pipe 13 to reduce heat dissipation.

[0070] In this embodiment, considering that the heat storage tank does not use water inlet and steam inlet simultaneously, the traditional steam inlet pipe and water inlet pipe are combined into one injection pipe 12 for use. Similarly, considering that the heat storage device does not use steam supply and steam discharge simultaneously, the steam supply pipe and steam discharge pipe are combined into one heat outlet pipe 13 for use.

[0071] In a specific embodiment, as Figure 3 shown, a feasible structure of the turbulence mechanism 2 is further provided. A plurality of air distribution pipes 3 are all arranged perpendicular to the length direction of the tank body 1, that is, vertically arranged. A plurality of impellers 20 and a plurality of air distribution pipes 3 are all arranged at a preset interval evenly. The spray holes 30 are located on the side wall of the air distribution pipe 3, and the spray holes 30 are aligned with the windward surface (the front of the impeller 20) of the impeller 20. Specifically, during implementation, when high-temperature steam sprays out from the spray holes 30, it will directly face the windward surface of the impeller 20, enabling the impeller 20 to rotate better.

[0072] It should be noted that in some other possible embodiments, the spray holes 30 of the air distribution pipe 3 are aligned with the side surface of the impeller 20. In this way, the high-temperature steam ejected from the spray holes 30 can also cause the impeller 20 to rotate. However, after adopting this setting method, the rotation of the impeller 20 may not be as good as the method of directly facing the windward surface of the impeller 20. Those skilled in the art can make a choice according to actual needs.

[0073] In one embodiment, as Figure 2 and Figure 4 shown, in order to reduce the possibility of temperature dead zones occurring at the two end heads 14 of the tank body 1, the tank body 1 has opposite first end 10 and second end 11; a plurality of air distribution pipes 3 adjacent to the first end 10 and a plurality of air distribution pipes 3 adjacent to the second end 11 are arranged facing each other or back to back. Specifically, in implementation, the spray holes 30 of the air distribution pipes 3 on both sides can face each other, so that the air flow and liquid on both sides flow towards the middle, promoting the mutual mixing of the liquid in different regions in the tank body 1, or the spray holes 30 of the air distribution pipes 3 on both sides that are symmetric to each other are back to back, so that the air flow and liquid in the middle flow towards both sides, which can also promote the mutual mixing of the liquid in different regions in the tank body 1.

[0074] In this embodiment, aiming at the problem that the end heads 14 of the tank body 1 are particularly prone to low-temperature dead zones, the spray holes 30 of the plurality of air distribution pipes 3 adjacent to the first end 10 face the first end 10, that is, the plurality of air distribution pipes 3 adjacent to the first end 10 are located on the side of the impeller 20 adjacent to the second end 11, with the middle of the horizontal axis of the tank body 1 as the boundary, Figure 2 all the air distribution pipes 3 below the middle boundary of the horizontal axis are arranged on the side of the impeller 20 adjacent to the second end 11, so that the water adjacent to the first end 10 flows towards the first end 10; the spray holes 30 of the plurality of air distribution pipes 3 adjacent to the second end 11 face the second end 11, that is, the plurality of air distribution pipes 3 adjacent to the second end 11 are located on the side of the impeller 20 adjacent to the first end 10, with the middle of the horizontal axis of the tank body 1 as the boundary, Figure 2 all the air distribution pipes 3 above the middle boundary of the horizontal axis are arranged on the side of the impeller 20 adjacent to the first end 10, so that the water adjacent to the second end 11 flows towards the second end 11; as Figure 4 shown, a plurality of air distribution pipes 3 and the impeller 20 are symmetrically arranged with respect to the middle of the tank body 1, and the air distribution pipes 3 on both sides are back to back, and the air flow a ejected from the air distribution pipes 3 will be ejected towards both ends of the tank body 1 respectively.

[0075] After the air distribution pipe 3 and the impeller 20 adopt this arrangement method, the high-temperature steam can be ejected towards both ends of the tank body 1, and the ejected high-temperature steam can cause the impeller 20 to rotate and push the high-temperature water in the tank body 1 to flow towards both ends of the tank body 1, and squeeze the low-temperature water in the end head 14 areas at both ends of the tank body 1 to the middle of the tank body 1 for heating, especially for heating and circulating in the end head 14 area, effectively avoiding the problem of low-temperature dead zones in the end head 14 area of the tank body 1.

[0076] In one embodiment, as Figure 3 shown, the gas distribution pipe 3 includes a horizontal pipe body 31, a first vertical pipe body 32 and a second vertical pipe body 33; the horizontal pipe body 31 is used for allowing external gas or liquid to pass through, that is, the horizontal pipe body 31 is communicated with the injection pipe 12; both ends of the horizontal pipe body 31 are communicated with the first vertical pipe body 32 and the second vertical pipe body 33 respectively, and spray holes 30 are formed on both the first vertical pipe body 32 and the second vertical pipe body 33. Specifically, in implementation, the gas distribution pipe 3 is arranged in an inverted Y shape and is close to the impeller 20, and the mechanical energy of the high-temperature and high-pressure steam ejected from the holes of the gas distribution pipe 3 is fully utilized to do work to generate electric energy.

[0077] In this embodiment, as Figure 3 shown, a plurality of spray holes 30 are arranged linearly and uniformly at the lower parts of the first vertical pipe body 32 and the second vertical pipe body 33, forming two rows of spray holes 30 arranged horizontally in the vertical direction. When the steam flow area suddenly changes from a large pipe to the spray holes 30, the flow velocity can increase several times or even more than a dozen times, turning the steam into a high-speed high-temperature and high-pressure steam jet, and the high-speed high-pressure and high-temperature steam directly impacts the impeller 20 close to the gas distribution pipe 3.

[0078] In one embodiment, as Figure 2 shown, the flow disturbing mechanism 2 further includes a generator 22 and a storage battery; the rotating shaft 21a is located on the central axis in the length direction of the tank body 1, the rotating shaft 21a is fixedly connected with a plurality of impellers 20, the rotating shaft 21a is in transmission connection with the generator 22, and the generator 22 is electrically connected with the storage battery.

[0079] When the flow disturbing mechanism 2 adopts the generator 22 and the storage battery, the following advantages are respectively achieved for the steam charging process and the steam discharging process:

[0080] During the steam charging process, after the impeller 20 is driven to rotate by the high-temperature steam, it will drive the rotating shaft 21a to rotate, and the rotating shaft 21a will drive the internal magnetic electricity generation action of the generator 22. The electric energy generated by the generator 22 will be stored in the storage battery, realizing that the high-speed steam jet drives the impeller 20 to rotate and the external mobile generator 22 functions to generate electric energy, achieving combined heat and power generation and self-use of electric energy, and being able to supply power to the control box and valves of the heat supply tanker itself. If an electric tractor head is used, it can also supply electric energy to the tractor head, enabling the water tanker to operate independently without external electric energy supply, realizing the self-charging operation of the water tanker. There is no precedent for this aspect in water tankers.

[0081] During the steam release process, the electrical energy of the storage battery is input into the generator 22, causing the generator 22 to operate in reverse, that is, to form an electric motor. The electric motor drives the rotation of the rotating shaft 21a. The rotation of the rotating shaft 21a drives the impeller 20 to rotate. The rotating impeller 20 can stir the vapor-liquid interface and also destroy the stratification of the saturated water temperature. The rotation of the impeller 20 will also bring some small steam clusters into the saturated water after the water level drops, providing more nucleation sites (nucleation, also known as nucleation, is the "gestation stage" at the initial stage of phase change. The formation of bubbles in soda water and beer are all nucleation phenomena, and nucleation phenomena require nucleation sites to occur). At the same time, extremely small bubbles will adsorb on the impeller 20. These small bubbles can all serve as the points for steam accumulation during heat release and release steam faster during steam discharge, ensuring that the steam at the corresponding temperature and pressure can be completely released. In the traditional gas-liquid structure, during steam discharge, since the heat and mass transfer process between the gas and liquid occurs only on the horizontal plane (the horizontal plane is the interface between the steam and the saturated water when the tanker is stationary), when the pressure drops too fast, the temperature has not yet dropped to the saturation temperature. The above divisional case of the present invention can improve the above problems that occur in the traditional gas-liquid structure.

[0082] It should be noted that the rotation speed of the rotating shaft 21a driven by the electric motor should be relatively slow and gentle to avoid excessive stirring of the impeller 20, resulting in excessive flow of the liquid in the tank body 1 and causing the tank body 1 to tip over or other safety problems.

[0083] In addition, the electrical energy stored in the storage battery can be used for the power supply of the control box, valves, electric vehicle heads, etc. of the tanker itself, enabling the entire heat storage tank to be applied in a variety of scenarios, including but not limited to the power consumption scenarios during in-transit transportation and the power consumption scenarios on the user side.

[0084] In one embodiment, in order to improve the rotation efficiency of the air flow driving the impeller 20 and the efficiency of steam release, the impeller 20 includes a plurality of arc-shaped blades 200, and the plurality of arc-shaped blades 200 are fixedly connected to the rotating shaft 21a; the arc-shaped blade 200 has opposite first side 2000 and second side 2001; the thickness of the first side 2000 is thicker than the thickness of the second side 2001, as Figure 5 shown, the surface of the first side 2000 and the surface of the second side 2001 are smoothly transitioned; the first side 2000 is arranged adjacent to the air distribution pipe 3, that is, along the flow direction of the air flow, the arc-shaped blade 200 forms an arc-shaped structure with a thick front and a narrow rear like an airfoil.

[0085] After the arc-shaped blade 200 of the impeller 20 adopts the above structure, there are at least the following advantages: one is high rotation efficiency, as Figure 8As shown, when the air flow a flows on the arc-shaped blade 200, the path on the inner surface of the arc-shaped blade 200 is short and the flow velocity is slow, so its pressure is large. The path on the outer surface of the arc-shaped blade 200 is long and the flow velocity is fast, and the pressure is small. A pressure difference is formed inside and outside, and the pressure difference drives the arc-shaped impeller 20 to rotate. The rotation efficiency of the impeller 20 driven by the air flow is higher. The blades stir the water-vapor two-phase in the tank, accelerating the heat exchange process. Second, the arc angle of the arc-shaped blade 200 can cut the steam jet into small steam masses of different shapes and reflect the steam jet to different angles when contacting the steam jet to better cover the space inside the tank body 1, further reshaping the distribution of the steam. Third, the surface of the arc-shaped structure can form more nucleation points that trigger phase changes, thereby improving the efficiency and effect of releasing steam during steam output.

[0086] In this embodiment, in order to further increase the steam release amount during steam discharge, the surface of the arc-shaped blade 200 is an uneven rough surface. The rough surface and the arc-shaped structure of the arc-shaped blade 200 can both form more nucleation points that trigger phase changes, enabling the liquid phase to be transformed into the gas phase as much as possible to ensure the maximum amount of steam released corresponding to the pressure release.

[0087] In a specific embodiment, as Figure 6 and Figure 7 shown, in order to improve the controllability of the rotation of the impeller 20, the impeller hybrid phase change saturated heat storage tank further includes a control mechanism 4; the control mechanism 4 includes a water level sensor 40, a steam pressure sensor 41, a braking device 42 and a controller; the water level sensor 40 is arranged inside the tank body 1; the steam pressure sensor is used to detect the steam pressure value inside the tank body 1 during steam discharge; the braking device 42 is arranged on the rotating shaft 21a, and the braking device 42 is used to stop the rotation of the rotating shaft 21a; the controller is signal-connected to the braking device 42, the water level sensor 40 and the steam pressure sensor 41. The controller is used to receive the signal of the water level sensor 40 and judge whether to control the braking device 42 to brake the rotating shaft 21a according to the water level information. Specifically, during implementation, the water level sensor 40 detects the current water level height inside the tank body 1, and the signal detected by the water level sensor 40 is transmitted to the controller. The controller compares the obtained water level information with the preset data. When the water level information exceeds the preset data, the controller outputs a signal instruction to control the braking device 42 to brake the rotating shaft 21a, making the rotating shaft 21a unable to continue rotating, and avoiding safety problems caused by large fluctuations of the water body inside the tank body 1 due to too high water level.

[0088] In summary, the above provides the complete structure and principle of the impeller hybrid phase change saturated heat storage tank. As Figure 6 shown, the following will give a complete application process:

[0089] When charging with steam, the steam drives the impeller 20 to do work and generate electricity. That is, the impeller 20 is connected to the generator 22 at the rear of the vehicle through the rotating shaft 21a. When steam is charged, the high-speed steam rotates the impeller blades of the adjacent impeller 20, and generates electricity at the generator 22. The generated electricity is stored in the storage battery. That is, electrical energy is generated at the generator 22 and stored in the storage battery. The electrical energy in the storage battery can meet the power consumption requirements of its own control cabinet and electric valves, and the excess electrical energy can also be supplied to the electric vehicle head or for external use. During the steam charging process, when the saturated water level reaches 90% in the tank, the braking device 42 is activated to stop the rotation of the impeller 20, preventing large water waves in the tank from causing liquid water to enter the steam discharge pipe or touch the emergency steam discharge device. When discharging steam, the storage battery supplies power to drive the impeller 20 to rotate slowly. That is, during the steam discharge process, when the steam discharge program is executed, the braking device 42 is opened, the storage battery provides power for the motor, drives the impeller 20 to rotate slightly to stir the saturated water in the tank, the vapor-liquid two-phase interface is destroyed, the heat of the saturated water can be fully released, the impeller 20 provides more nucleation points for heat transfer, ensuring that the maximum amount of steam is released corresponding to the pressure, and the vapor-liquid temperature difference will not be too large. When the steam is released to the target pressure, the valve closes and the system stops, completing the entire process.

[0090] Embodiment 1 of the present invention provides a water tanker in the second aspect, including:

[0091] The impeller mixing type phase change saturated heat storage tank in Embodiment 1;

[0092] A transport vehicle, with the impeller mixing type phase change saturated heat storage tank fixed on the transport vehicle.

[0093] Embodiment 2

[0094] Please refer to Figures 8 to 10 , Embodiment 2 of the present invention provides an impeller mixing type phase change saturated heat storage tank in the first aspect, which is basically the same as Embodiment 1, except that:

[0095] First, in Embodiment 2, there is no rotating shaft 21a, no corresponding generator 22 and control equipment, only the injection pipe shaft 21b (the injection pipe shaft 21b is equivalent to the injection pipe 12 in Embodiment 1). Therefore, the impeller 20 is not installed on the rotating shaft 21a, but the impeller 20 is rotatably installed on the injection pipe shaft 21b. That is, the turbulence shaft 21 in Embodiment 2 is the injection pipe shaft 21b, and the injection pipe shaft 21b is connected to the gas distribution pipe 3;

[0096] Second, the structure of the gas distribution pipe 3 is different. That is, in Embodiment 2, the gas distribution pipe 3 does not have the first vertical pipe body 32 and the second vertical pipe body 33, only a single pipe, and adjacent gas distribution pipes 3 are staggered from each other;

[0097] Third, the arrangement position of the injection pipe shaft 21b is different. The injection pipe shaft 21b in Embodiment 2 is located on the central axis in the length direction of the tank body 1, rather than being arranged close to the upper part as in Embodiment 1.

[0098] During the working process of this embodiment, when it is necessary to charge the tank body 1 with steam for heat storage, low-temperature water is introduced into the tank body 1 through the injection pipe shaft 21b. Subsequently, high-temperature steam is introduced into the tank body 1 through the injection pipe shaft 21b. The high-temperature steam will flow through the injection pipe shaft 21b and the air distribution pipe 3 in sequence, and finally spray out from the spray holes 30. The high-temperature steam sprayed out from the spray holes 30, as a power source, will cause the impeller 20 to rotate on the injection pipe shaft 21b. The impeller 20 will make the high-temperature steam fully mix with the water in the tank body 1 until the heat storage is completed; when it is necessary to supply steam and heat to the user side, the heat outlet pipe 13 is connected to the user side. After the valve on the user side is opened, the pressure difference will cause the high-temperature steam to be released through the heat outlet pipe 13 in the direction of lower pressure on the user side.

[0099] It should be noted that when the turbulence shaft 21 is the injection pipe shaft 21b and multiple impellers 20 are rotatably installed on the injection pipe shaft 21b, the transformation cost of the entire tank body 1 is low. Only by installing multiple impellers 20 on the original injection pipe shaft 21b and modifying the position of the air distribution pipe can the transformation of the tank body 1 be realized, which is more friendly to the transformation of the existing tank body.

[0100] In a specific embodiment, as Figure 8 and Figure 9 shown, an implementable installation method of the impeller 20 is further provided. The impeller 20 is rotatably installed on the injection pipe shaft 21b through a bearing. The injection pipe shaft 21b penetrates into the tank body 1 and is located on the central axis in the length direction, and the injection pipe shaft 21b will sequentially pass through the turbulence through holes of multiple anti-wave plates 15. During specific implementation, the injection pipe shaft 21b injects water or gas onto the air distribution pipe 3, and the air distribution pipe 3 will spray the high-temperature steam onto the windward surface of the impeller 20, so that the impeller 20 rotates on its own on the injection pipe shaft 21b.

[0101] In an embodiment, as Figure 10 shown, an implementable structure of the air distribution pipe 3 is further provided. The air distribution pipe 3 is a single pipe body, and adjacent air distribution pipes 3 are staggered from each other. In terms of the sectional structure, multiple air distribution pipes 3 form a crossed structure. During specific implementation, the staggered air distribution pipes 3 enable the air flow on one axis to form a spiral air flow, enhancing the fluidity of the air flow and better driving the impeller 20 to rotate.

[0102] In this embodiment, as Figure 9 shown, the air distribution pipes 3 are symmetrically arranged on the steam inlet / water inlet pipe. The angle difference between adjacent two groups of air distribution pipes 3 is 30°. A plurality of spray holes 30 are linearly and evenly opened on the air distribution pipe 3, turning the steam into a high-speed, high-temperature and high-pressure steam jet.

[0103] Embodiment 2 of the present invention provides a water tanker in the second aspect, including:

[0104] The impeller mixing type phase change saturated heat storage tank in Embodiment 2;

[0105] A transport vehicle, with an impeller-mixed phase change saturated heat storage tank fixed thereon.

[0106] As can be seen from the above, the cores of the first and second embodiments are that high-temperature steam is ejected from the spray holes 30 on the air distribution pipe 3, and the ejected high-temperature steam causes the impeller 20 to rotate. The rotating impeller 20 can, on the one hand, fully mix the gas-liquid two phases, and on the other hand, can push the liquid in the tank body 1 to flow, avoiding the occurrence of temperature dead zones in the tank body 1. The difference between the first and second embodiments is that the installation objects of the impeller 20 are different, and there is also a difference in whether it can generate electricity by itself. Based on the above embodiments, those skilled in the art can choose according to their needs.

[0107] Those skilled in the art can clearly understand that for the convenience and conciseness of description, the specific working processes of the systems, devices, and units described above can refer to the corresponding processes in the foregoing method embodiments, and will not be elaborated herein.

[0108] In this specification, each embodiment is described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. The same or similar parts among the embodiments can be referred to each other.

[0109] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of each embodiment of the present invention.

[0110] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and the above drawings of the present application are used to distinguish similar objects, and do not necessarily need to be used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products, or devices.

[0111] Finally, it should also be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations.

Claims

1. An impeller-mixed phase change saturated heat storage tank, comprising a tank body, characterized in that, Also includes: A spoiler mechanism, the spoiler mechanism comprising a spoiler shaft and a plurality of impellers arranged on the spoiler shaft, the spoiler shaft is arranged along the length direction of the tank body, and the plurality of impellers are located in the tank body; A plurality of air distribution pipes are provided, wherein the air distribution pipes are used to pass external gas or liquid into the tank body, the plurality of air distribution pipes are located inside the tank body, the plurality of air distribution pipes are arranged adjacent to different impellers, and spray holes are provided on the air distribution pipes, the spray holes are directed toward the blade surface of the nearest impeller, the spray range of the spray holes at least partially covers the blade surface of the nearest impeller, and the spray from the spray holes is used to rotate the impeller.

2. The impeller-mixed phase change saturated heat storage tank according to claim 1, wherein The plurality of air distribution pipes are arranged perpendicular to the length direction of the tank body, the spray holes are located on the side walls of the air distribution pipes, and the spray holes are aligned with the windward surface of the impeller.

3. The impeller-mixed phase change saturated heat storage tank according to claim 2, characterized in that, The tank has a first end and a second end that are opposite; The plurality of air distribution pipes adjacent to the first end and the plurality of air distribution pipes adjacent to the second end are arranged facing each other or facing away from each other.

4. The impeller hybrid phase change saturated heat storage tank according to claim 3 is characterized in that: The nozzles of the plurality of air distribution pipes adjacent to the first end are oriented toward the first end; The nozzle holes of the plurality of air distribution pipes adjacent to the second end face the second end.

5. The impeller-mixed phase-change saturated heat storage tank according to any one of claims 1 to 4, characterized in that The impeller includes a plurality of arc-shaped blades; The arcuate blade has a first side and a second side opposite to each other; The thickness of the first side is thicker than that of the second side, and the first side surface and the second side surface are smoothly transitioned; The first side is disposed adjacent to the air distribution duct.

6. The impeller-mixed phase change saturated heat storage tank according to claim 5, characterized in that The surface of the arc-shaped blade is a rough surface.

7. The impeller-mixed phase change saturated heat storage tank according to claim 2, characterized in that, The gas distribution pipe comprises a horizontal pipe body, a first vertical pipe body and a second vertical pipe body; The transverse tube is used for allowing external gas or liquid to enter; The two ends of the horizontal tube body are respectively connected with the first vertical tube body and the second vertical tube body, and the first vertical tube body and the second vertical tube body are both provided with the spray holes.

8. The impeller-mixed phase change saturated heat storage tank according to claim 1 or 2, characterized in that The spoiler shaft is an injection pipe shaft for receiving gas or water, and the injection pipe shaft is rotationally connected to the impeller.

9. The impeller-mixed phase change saturated heat storage tank according to claim 1 or 2, characterized in that, The spoiler shaft is a rotating shaft, and the rotating shaft is fixedly connected to the plurality of impellers; The spoiler mechanism also includes a generator and a battery; the rotating shaft is transmission-connected to the generator, and the generator is electrically connected to the battery.

10. A water tanker, characterized in that, include: The impeller hybrid phase change saturated heat storage tank according to any one of claims 1 to 9; A transport vehicle, on which the impeller hybrid phase change saturated heat storage tank is fixed.

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