Quick-heating double-side type efficient vortex tube heater

Abstract

The invention discloses a quick-heating double-side type efficient vortex tube heater, and relates to the technical field of pipeline heating and cooling devices. A quick-heating double-side type efficient vortex tube heater comprises an outer tube, a vortex conveying tube, an inner tube, a first heating cavity, a partition plate, an air cavity, an inclined hole, a high-pressure air inlet tube, a second heating cavity, an air inlet tube and an exhaust tube. Through the collaborative design of the first heating cavity and the second heating cavity, a heat exchange medium can be uniformly heated under the action of hot cyclone airflow on the two sides, meanwhile, the design not only solves the problem of ice blockage easily occurring under the conditions of extremely low temperature and pressure difference, but also effectively accelerates the temperature rise of the front end of the vortex conveying pipe, and the service life of the vortex conveying pipe is prolonged. In addition, due to the design of the annular baffles, the heating effects of the first heating cavity and the second heating cavity are further enhanced, it is ensured that media are fully heated, meanwhile, time is provided for preheating, and the problem that the heating efficiency is low due to unnecessary loss of heat is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of pipeline heating and cooling devices, and in particular relates to a fast-heating double-sided high-efficiency vortex tube heater. Background Art

[0002] The vortex tube heater uses the pressure difference of fluids such as natural gas to generate high-speed swirl in the vortex tube, converting the outer gas into high-temperature hot gas, and then transferring the heat to the medium that needs to be heated through the heat exchanger. Traditional vortex tube designs usually adopt a single-side heating method, that is, the heat is mainly transferred to the heat exchange medium through one side of the vortex tube. This design meets the basic heating or cooling needs to a certain extent, but in actual applications, it gradually exposes problems such as low heating efficiency and uneven heat energy distribution. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a fast-heating double-sided high-efficiency vortex tube heater that can overcome the above problems or at least partially solve the above problems.

[0004] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is: a fast-heating double-sided high-efficiency vortex tube heater, comprising an outer tube and a vortex conveying tube arranged inside the outer tube, and also comprising an inner tube located inside the outer tube and fixedly connected to the vortex conveying tube, a first heating chamber formed between the inner tube and the outer tube, and a partition plate fixedly connected between the inner tube and the vortex conveying tube, an air chamber formed between the partition plate and one side of the inner tube, a plurality of circumferentially distributed and corresponding inclined holes are provided on the vortex conveying tube and are all located inside the air chamber, a plurality of high-pressure air intake pipes connected to the air chamber are provided between the outer tube and the inner tube, a second heating chamber is formed between the partition plate and the other side of the inner tube, an air inlet pipe connected to the second heating chamber is connected between the lower surfaces of the outer tube and the inner tube, and an exhaust pipe connected to the second heating chamber is connected between the upper surfaces of the outer tube and the inner tube.

[0005] Preferably, a circular fixing plate is fixedly connected between the outer surface of the vortex conveying tube and the inner wall of the outer tube, one end of the vortex conveying tube is connected to a low-pressure air outlet pipe, and the other end of the vortex conveying tube is provided with a blocking piece.

[0006] Preferably, the blocking member comprises a sealing plate connected to one end of the outer tube, and the sealing plate is located on a side corresponding to the vortex conveying tube and is fixedly connected to a conical head.

[0007] Preferably, a heat exchange tube corresponding to the inside of the second heating chamber is provided between the outer surface of the vortex conveying tube and the inner surface of the inner tube, one end of the heat exchange tube is connected to the air inlet pipe, and the other end of the heat exchange tube is connected to the exhaust pipe.

[0008] Preferably, the heat exchange tube is a spiral structure, the first heating chamber and the second heating chamber are both ring-shaped pipe structures, and the length of the first heating chamber is greater than the length of the second heating chamber.

[0009] Preferably, a movable annular baffle is provided in front of the fixed plate on one side of the first heating chamber, and when the annular baffle is slidably connected between the inner tube and the outer tube, the first heating chamber is in a sealed state.

[0010] Preferably, when the annular baffle is in contact with the inner wall of the outer tube but not in contact with the surface of the inner tube, the vortex conveying tube is provided with a plurality of openings all connected with the first heating chamber, and the first heating chamber is in an open state.

[0011] Preferably, a plurality of circumferentially distributed movable rods are fixedly connected to the annular baffle plate, and a compression spring located between the annular baffle plate and the fixed plate is sleeved on the movable rod. An annular limiting plate is fixedly connected between each movable rod and the corresponding end portion on the other side of the fixed plate.

[0012] Preferably, the annular baffle is located on one side corresponding to the high-pressure air intake pipe and is fixedly connected to a plurality of sensor heads distributed in a circle, the number and position of the sensor heads correspond to the moving rod, a wiring groove is provided between the annular baffle, the moving rod and the annular limit plate, a wire is provided inside the wiring groove, one end of the wire is electrically connected to the sensor head, and the other end of the wire is electrically connected to a control component.

[0013] Preferably, the control component includes an annular mounting plate which is sleeved above the low-pressure air outlet pipe and fixedly connected to one end of the outer tube, and a driving part which is electrically connected to the corresponding end of the wire is installed on the side of the annular mounting plate corresponding to the fixed plate, and when the driving part is adsorbed with the annular limiting plate, the annular baffle is in a fixed state, and when the driving part is not adsorbed with the annular limiting plate, the annular baffle is in a movable state.

[0014] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0015] The present invention, firstly, through the coordinated design of the first heating chamber and the second heating chamber, enables the heat exchange medium to be heated by the hot cyclonic airflow from both sides of the vortex tube at the same time, thereby greatly improving the heating efficiency;

[0016] Secondly, not only can the hot cyclone airflow entering the first heating chamber be used to preheat the high-pressure intake pipe, effectively solving the ice blockage problem that may occur in natural gas under extremely low temperature and extremely small pressure difference conditions, but also the hot cyclone airflow generated after the preheated high-pressure intake pipe enters the vortex delivery pipe can heat up more quickly at the front end of the vortex delivery pipe, so that the heat exchange medium in the second heating chamber can be heated more efficiently, thereby improving the overall heating efficiency;

[0017] Finally, the design of the annular baffle not only enhances the synergistic heating effect of the first heating chamber and the second heating chamber, ensuring that the heat exchange medium is fully heated, but also provides sufficient time for the hot cyclone airflow to preheat the high-pressure air inlet pipe, effectively preventing the occurrence of ice blockage. When the hot cyclone airflow pressure increases to a certain level, the annular baffle will automatically open the discharge channel to ensure that the heat is fully utilized, avoiding the problem of heat loss before it is fully released. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In the attached picture:

[0019] Figure 1 This is a first structural schematic diagram of a fast-heating double-sided high-efficiency vortex tube heater proposed by the present invention;

[0020] Figure 2 For the present invention Figure 1 A schematic diagram of the cross-sectional structure of the connection between the inner and outer tubes, the vortex conveying tube and the inner tube;

[0021] Figure 3 For the present invention Figure 2 A schematic diagram of the partially enlarged structure at center A;

[0022] Figure 4 For the present invention Figure 2 Schematic diagram of the explosion structure connecting the middle annular baffle and the outer tube;

[0023] Figure 5 For the present invention Figure 4 A schematic cross-sectional view of the middle annular baffle;

[0024] Figure 6 For the present invention Figure 2 A schematic diagram of a first connection structure between the middle driving part and the annular mounting plate;

[0025] Figure 7 For the present invention Figure 2 A schematic diagram of a second connection structure between the middle driving part and the annular mounting plate;

[0026] Figure 8 This is a second structural schematic diagram of a fast-heating double-sided high-efficiency vortex tube heater proposed by the present invention.

[0027] In the figure: 1. outer tube; 2. vortex conveying tube; 3. inner tube; 31. first heating chamber; 32. partition plate; 33. air chamber; 34. inclined hole; 35. high-pressure air inlet pipe; 36. second heating chamber; 37. air inlet pipe; 38. exhaust pipe; 39. low-pressure air outlet pipe; 310. heat exchange tube; 4. fixing plate; 5. sealing plate; 51. head; 6. annular baffle; 61. opening; 62. moving rod; 63. compression spring; 64. annular limit plate; 65. induction head; 66. wiring groove; 67. wire; 68. annular mounting plate; 69. drive unit. DETAILED DESCRIPTION

[0028] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments so that those skilled in the art can implement the invention with reference to the description.

[0029] It should be understood that the terms such as “having”, “including” and “comprising” used herein do not exclude the existence or addition of one or more other elements or combinations thereof.

[0030] In the description of the present invention, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. to indicate directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0031] Example 1: Reference Figure 1-Figure 8A fast-heating double-sided high-efficiency vortex tube heater comprises an outer tube 1 and a vortex conveying tube 2 arranged inside the outer tube 1, and also comprises an inner tube 3 located inside the outer tube 1 and fixedly connected to the vortex conveying tube 2, a first heating chamber 31 is formed between the inner tube 3 and the outer tube 1, and a partition plate 32 is fixedly connected between the inner tube 3 and the vortex conveying tube 2, an air chamber 33 is formed between the partition plate 32 located on one side of the inner tube 3, a plurality of circumferentially distributed corresponding oblique holes 34 are arranged on the vortex conveying tube 2 and are all located inside the air chamber 33, a plurality of high-pressure air intake pipes 35 connected to the air chamber 33 are arranged between the outer tube 1 and the inner tube 3, and the partition plate A second heating chamber 36 is formed between 32 and the other side of the inner tube 3, an air inlet pipe 37 connected to the second heating chamber 36 is connected between the lower surfaces of the outer tube 1 and the inner tube 3, an exhaust pipe 38 connected to the second heating chamber 36 is connected between the upper surfaces of the outer tube 1 and the inner tube 3, a circular fixing plate 4 is fixedly connected between the outer surface of the vortex conveying tube 2 and the inner wall of the outer tube 1, one end of the vortex conveying tube 2 is connected to a low-pressure air outlet pipe 39, and a sealing member is provided at the other end of the vortex conveying tube 2, the sealing member includes a sealing plate 5 connected to one end of the outer tube 1, and the sealing plate 5 is located on the side corresponding to the vortex conveying tube 2 and is fixedly connected to a conical head 51.

[0032] In the above technical scheme, first, high-pressure gas flows into the air cavity 33 between the inner tube 3 and the vortex delivery tube 2 through multiple high-pressure air inlet pipes 35, and then, the high-pressure gas is ejected at high speed from multiple inclined holes 34 evenly distributed on the vortex delivery tube 2. Due to the design of the inclined holes 34, the gas forms a certain tangential velocity when ejected, thereby forming a high-speed rotating vortex inside the vortex delivery tube 2. Under the action of centrifugal force, the gas in the vortex is divided into an outer layer of hot cyclone airflow and an inner layer of cold cyclone airflow. The cold cyclone airflow is discharged through the low-pressure air outlet pipe 39, and the hot cyclone airflow enters the first heating chamber 31 through the channel formed between the vortex delivery tube 2 and the head 51. At this time, the heat exchange medium entering the second heating chamber 36 through the air inlet pipe 37 can be heated on both sides of the first heating chamber 31 and the second heating chamber 36 at the same time, thereby improving the heating efficiency.

[0033] It should be particularly noted that in the present technical solution, the surface of the high-pressure air inlet pipe 35 is located in the first heating chamber 31. When the hot cyclone airflow enters the first heating chamber 31, it not only efficiently heats the heat exchange medium, but also the hot cyclone airflow entering the first heating chamber 31 can heat the high-pressure air inlet pipe 35. This design takes into account that the high-pressure gas input by the high-pressure air inlet pipe 35 is natural gas. When the natural gas temperature and ambient temperature are extremely low and the pressure difference or pressure ratio before and after the pressure regulator is extremely small, there is theoretically a possibility of ice blockage in the equipment. By using the hot cyclone airflow to heat the high-pressure air inlet pipe 35, this situation can be effectively avoided.

[0034] In addition, considering that the hot vortex airflow generated in the vortex conveying tube 2 usually gradually heats up in the middle and rear sections, and the heat near the middle and front ends is relatively low, the heating efficiency of the heat exchange medium in the second heating chamber 36 is not high. Therefore, after heating the high-pressure air intake pipe 35, the hot vortex airflow generated entering the vortex conveying tube 2 can be heated more quickly at the front end of the vortex conveying tube 2. In this way, the heat exchange medium in the second heating chamber 36 can be heated more efficiently, thereby improving the overall heating efficiency.

[0035] Reference Figure 1 A heat exchange tube 310 corresponding to the inside of the second heating chamber 36 is provided between the outer surface of the vortex conveying tube 2 and the inner surface of the inner tube 3. One end of the heat exchange tube 310 is connected to the air inlet pipe 37, and the other end of the heat exchange tube 310 is connected to the exhaust pipe 38. The heat exchange tube 310 is a spiral structure. This design, on the one hand, helps to improve the flow state of the fluid and produce a turbulent effect. The turbulence can enhance the convective heat transfer coefficient between the fluid and the tube wall, and further improve the heat exchange efficiency. In contrast, if the heat exchange medium directly enters the second heating chamber 36, the heat exchange may be insufficient due to poor flow conditions. On the other hand, the fluid continuously changes its flow direction in the spiral tube, which can help reduce the temperature gradient compared to the fluid directly entering the second heating chamber 36, so that the heat exchange medium can obtain a more uniform temperature distribution inside the second heating chamber 36.

[0036] The first heating chamber 31 and the second heating chamber 36 are both annular pipe structures. The length of the first heating chamber 31 is greater than that of the second heating chamber 36. As the length of the first heating chamber 31 increases, the contact time between the hot cyclone airflow and the heat exchange medium is also correspondingly extended, which improves the heat transfer efficiency and enables the heat exchange medium to more fully absorb and utilize the heat in the hot cyclone airflow. At the same time, the extended first heating chamber 31 can also heat the high-pressure air inlet pipe 35, reduce the temperature fluctuation of the gas during the heating process, and make the temperature of the output gas more uniform and controllable, thereby improving the stability and efficiency of the entire heating process.

[0037] Example 2: Reference Figure 3-Figure 7On the basis of the above-mentioned embodiment 1, a movable annular baffle 6 is provided in front of the fixed plate 4 located on one side of the first heating chamber 31, and a plurality of circumferentially distributed moving rods 62 are fixedly connected to the annular baffle 6, and a compression spring 63 located between the annular baffle 6 and the fixed plate 4 is sleeved on the moving rod 62. An annular limiting plate 64 is fixedly connected between each moving rod 62 and the corresponding end portion on the other side of the fixed plate 4. When the annular baffle 6 is slidably connected between the inner tube 3 and the outer tube 1, the first heating chamber 31 is in a sealed state. When the annular baffle 6 is in contact with the inner wall of the outer tube 1 and is not in contact with the surface of the inner tube 3, a plurality of openings 61 are provided on the vortex conveying tube 2, all of which are connected to the first heating chamber 31, and the first heating chamber 31 is in an open state.

[0038] In the above technical solution, the annular baffle 6 is fitted between the inner tube 3 and the outer tube 1 in order to delay the residence time of the hot cyclone airflow in the first heating chamber 31. This design can not only enhance the synergistic heating effect of the hot cyclone airflow in the first heating chamber 31 and the second heating chamber 36, so that the heat exchange medium can be more fully heated, but also ensure that the hot cyclone airflow in the first heating chamber 31 has enough time to heat the high-pressure air inlet pipe 35, thereby effectively preventing the occurrence of ice blockage.

[0039] When the pressure of the hot cyclone airflow in the first heating chamber 31 gradually increases, the airflow will automatically push the annular baffle 6, and then squeeze the moving rod 62 and the compression spring 63, so that the annular baffle 6 opens the discharge channel between the first heating chamber 31 and the opening 61. This design can ensure that the heat of the hot cyclone airflow is fully utilized, whether it is used to heat the heat exchange medium or the high-pressure air inlet pipe 35, and avoids the problem of the hot cyclone airflow failing to fully release heat and directly flowing out from the low-pressure air outlet pipe 39 through the opening 61.

[0040] Example 3: Reference Figure 3-Figure 7 On the basis of the above-mentioned second embodiment, the annular baffle 6 is located on the side corresponding to the high-pressure air inlet pipe 35 and is fixedly connected with a plurality of sensor heads 65 distributed in a circle. The number and position of the sensor heads 65 and the moving rod 62 correspond to each other. A wiring groove 66 is provided between the annular baffle 6, the moving rod 62 and the annular limit plate 64. A wire 67 is provided inside the wiring groove 66. One end of the wire 67 is electrically connected to the sensor head 65, and the other end of the wire 67 is electrically connected to a control component. The control component includes an annular mounting plate 68 which is sleeved above the low-pressure air outlet pipe 39 and fixedly connected to one end of the outer tube 1. The annular mounting plate 68 is located on the side corresponding to the fixed plate 4 and is installed with a driving part 69 which is electrically connected to the corresponding end of the wire 67.

[0041] In the above technical solution, when the induction head 65 on the annular baffle 6 monitors that the temperature in the first heating chamber 31 reaches a preset value, the driving part 69 will automatically start the driving part 69 using an electromagnet to adsorb the annular limit plate 64 made of iron after receiving the signal through the wire 67. During this adsorption process, the annular limit plate 64 will pull the moving rod 62 to drive the annular baffle 6 to separate from the surface of the inner tube 3, so that the annular baffle 6 is attached to the inner wall of the outer tube 1, so that the channel connecting the first heating chamber 31 and the opening 61 is in an open state. In this design, when the temperature in the first heating chamber 31 is high, there is no need to delay the flow of the hot air flow, so the annular baffle 6 is removed. In the middle and early stages of the hot vortex air flow entering the first heating chamber 31, due to the relatively low temperature, the annular baffle 6 remains in place, which plays a role in delaying the flow of the hot air flow. In this way, the flow state of the hot air flow can be intelligently adjusted according to the temperature in the first heating chamber 31 to ensure the efficiency and safety of the heating process.

[0042] It should be noted that when the driving portion 69 and the annular limiting plate 64 are adsorbed, the annular baffle 6 is in a fixed state, and when the driving portion 69 and the annular limiting plate 64 are not adsorbed, the annular baffle 6 is in a movable state.

[0043] The above embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which are equivalent modifications and improvements made to the above embodiments based on the essential technology of the present invention, and all of them belong to the protection scope of the present invention.

Claims

1. A fast-heating double-sided high-efficiency vortex tube heater, comprising: An outer tube (1) and a vortex conveying tube (2) arranged inside the outer tube (1); characterized in that it also comprises: an inner tube (3) located inside the outer tube (1) and fixedly connected to the vortex conveying tube (2), wherein a first heating chamber (31) is formed between the inner tube (3) and the outer tube (1); and A partition plate (32) is fixedly connected between the inner tube (3) and the vortex conveying tube (2); an air cavity (33) is formed between the partition plate (32) and one side of the inner tube (3); a plurality of circumferentially distributed inclined holes (34) are provided on the vortex conveying tube (2) and are located corresponding to the inside of the air cavity (33); a plurality of high-pressure air intake pipes (35) are provided between the outer tube (1) and the inner tube (3) and are connected to the air cavity (33); a second heating cavity (36) is formed between the partition plate (32) and the other side of the inner tube (3); an air intake pipe (37) is connected between the lower surfaces of the outer tube (1) and the inner tube (3) and is connected to the second heating cavity (36); and an exhaust pipe (38) is connected between the upper surfaces of the outer tube (1) and the inner tube (3) and is connected to the second heating cavity (36).

2. A fast-heating double-sided high-efficiency vortex tube heater according to claim 1, characterized in that: A circular fixing plate (4) is fixedly connected between the outer surface of the vortex conveying tube (2) and the inner wall of the outer tube (1); one end of the vortex conveying tube (2) is connected to a low-pressure air outlet pipe (39); and the other end of the vortex conveying tube (2) is provided with a sealing member.

3. A fast-heating double-sided high-efficiency vortex tube heater according to claim 2, characterized in that: The sealing member comprises a sealing plate (5) connected to one end of the outer tube (1), and the sealing plate (5) is located on a side corresponding to the vortex conveying tube (2) and is fixedly connected to a conical sealing head (51).

4. The fast-heating double-sided high-efficiency vortex tube heater according to claim 3, characterized in that: A heat exchange tube (310) corresponding to the interior of the second heating chamber (36) is provided between the outer surface of the vortex conveying tube (2) and the inner surface of the inner tube (3); one end of the heat exchange tube (310) is connected to the air inlet pipe (37), and the other end of the heat exchange tube (310) is connected to the exhaust pipe (38).

5. The fast-heating double-sided high-efficiency vortex tube heater according to claim 4, characterized in that: The heat exchange tube (310) is a spiral structure, the first heating chamber (31) and the second heating chamber (36) are both ring-shaped pipe structures, and the length of the first heating chamber (31) is greater than the length of the second heating chamber (36).

6. A fast-heating double-sided high-efficiency vortex tube heater according to claim 2 or 5, characterized in that: A movable annular baffle (6) is provided in front of the fixed plate (4) located on one side of the first heating chamber (31); when the annular baffle (6) is slidably connected between the inner tube (3) and the outer tube (1), the first heating chamber (31) is in a sealed state.

7. A fast-heating double-sided high-efficiency vortex tube heater according to claim 6, characterized in that: When the annular baffle (6) is in contact with the inner wall of the outer tube (1) but not in contact with the surface of the inner tube (3), the vortex conveying tube (2) is provided with a plurality of openings (61) each of which is in communication with the first heating chamber (31), and the first heating chamber (31) is in an open state.

8. The fast-heating double-sided high-efficiency vortex tube heater according to claim 6, characterized in that: The annular baffle (6) is fixedly connected to a plurality of circumferentially distributed moving rods (62), the moving rods (62) are sleeved with compression springs (63) located between the annular baffle (6) and the fixed plate (4), and each of the moving rods (62) passes through and is fixedly connected to an annular limiting plate (64) between the corresponding ends on the other side of the fixed plate (4).

9. The fast-heating double-sided high-efficiency vortex tube heater according to claim 8, characterized in that: The annular baffle (6) is located on one side corresponding to the high-pressure intake pipe (35) and is fixedly connected to a plurality of sensor heads (65) distributed in a circumferential manner. The number and position of the sensor heads (65) correspond to those of the movable rod (62). A wiring groove (66) is provided between the annular baffle (6), the movable rod (62) and the annular limit plate (64). A wire (67) is provided inside the wiring groove (66). One end of the wire (67) is electrically connected to the sensor head (65), and the other end of the wire (67) is electrically connected to a control component.

10. The fast-heating double-sided high-efficiency vortex tube heater according to claim 9, characterized in that: The control component comprises an annular mounting plate (68) which is sleeved on the low-pressure air outlet pipe (39) and fixedly connected to one end of the outer tube (1); the annular mounting plate (68) is located on a side corresponding to the fixed plate (4) and is provided with a driving part (69) which is electrically connected to one end corresponding to the wire (67); when the driving part (69) is adsorbed on the annular limiting plate (64), the annular baffle (6) is in a fixed state; when the driving part (69) is not adsorbed on the annular limiting plate (64), the annular baffle (6) is in a movable state.

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