A shock wave generating device with monroe effect enhancement

Abstract

The application relates to a Monroe-effect enhanced shock wave generating device, which comprises a tank body, one end of the tank body is provided with an inlet for mixed gas, the other end of the tank body is provided with an outlet and connected with a shock wave output end, an inner cone and an efficiency ring are arranged in the tank body, the inner cone is adjacent to the inlet, the top of the inner cone is towards the inlet and provided with a turbulence passage for the mixed gas, the efficiency ring is spaced opposite to the inner cone along the axial direction of the tank body, and the central hole of the efficiency ring is connected with the shock wave output end. In the application, the turbulence passage of the inner cone can mix the mixed gas again, the mixing degree of the mixed gas is improved, a conical cavity is formed between the inner cone and the tank body, based on the Monroe effect, the inner cone can both concentrate energy and enhance the effect and indicate the direction of the shock wave during the shock wave generating process, energy loss is prevented, and the efficiency ring cooperates with the inner cone and blocks the backflow of smoke and dust.

Description

Technical Field

[0001] This invention relates to the field of boiler tool technology, and more specifically to a shock wave generator with enhanced Munro effect. Background Technology

[0002] During boiler operation, slag and ash accumulation frequently occur. The thermal conductivity of the ash layer is much lower than that of the metal tube wall, severely affecting the heat transfer effect of the wall surface. Currently, shock wave soot blowers are widely used due to their advantages of simple equipment, advanced soot blowing principle, good soot blowing effect, and low maintenance cost. However, existing ordinary pulse generators have the following defects: First, the generated shock waves are unstable, resulting in low efficiency; second, during system operation, there is a lack of a structure for remixing air and fuel gas between the self-mixing ignition module and the pulse generation module, leading to uneven mixing of air and fuel gas, resulting in low ignition efficiency and unstable system operation; third, the vibration generated during the ignition and shock wave generation process is very large, and becomes more pronounced as the pipe length gradually increases; fourth, after a period of use, the combustion efficiency is low, resulting in a large amount of carbon and dust accumulation in the inlet process pipeline of the pulse shock wave production tank, which can clog the pipeline and cause operational failures in severe cases. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a shock wave generator with enhanced Monroe effect, which has a simple structure, low processing and operating costs, and utilizes the Monroe effect to solve the problems of instability, poor soot blowing effect, severe vibration of equipment process pipelines, and backflow of carbon and ash accumulation during system operation.

[0004] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: A shock wave generator with enhanced Munro effect includes a tank. One end of the tank is provided with an inlet for mixed gas to enter, and the other end of the tank is provided with an outlet and connected to a shock wave output end. An inner cone and an enhancement ring are assembled inside the tank. The inner cone is adjacent to the inlet, and the top of the inner cone faces the inlet and is provided with a turbulence channel for mixed gas to pass through. The enhancement ring is spaced apart from the inner cone along the axial direction of the tank, and the central hole of the enhancement ring is connected to the shock wave output end.

[0005] The beneficial effects of this invention are: the turbulence channel of the inner cone can remix the mixed gas, thereby improving the mixing degree of the mixed gas; the inner cone and the inside of the tank form a conical cavity; based on the Munroe effect, the inner cone can both concentrate energy and enhance efficiency during the shock wave generation process, and also indicate the direction of the shock wave to prevent energy loss; the enhancement ring cooperates with the inner cone to block the backflow of smoke and dust.

[0006] Based on the above technical solution, the present invention can be further improved as follows.

[0007] Furthermore, along the axial direction of the tank, the distance between the inner cone and the inlet is less than the distance between the enhancement ring and the outlet.

[0008] The beneficial effect of adopting the above-mentioned further scheme is that it provides sufficient reaction space for shock wave generation, can accommodate more mixed gas, and is conducive to improving the energy focusing efficiency.

[0009] Furthermore, the enhancing ring is a tapered ring, and the tapering angle of the enhancing ring is equal to the apex angle of the inner cone.

[0010] The beneficial effect of adopting the above-mentioned further solution is that by using a tapered ring with a certain tilt angle on its surface, it can better withstand pressure and reduce drag, thereby improving the effect of preventing smoke and dust backflow.

[0011] Furthermore, the turbulence channel is divided into a turbulence gap and turbulence holes. The turbulence gap is located between the edge of the inner cone and the inner wall of the tank, and the turbulence holes are distributed at the top and the surface of the inner cone.

[0012] The beneficial effect of adopting the above-mentioned further scheme is that the turbulence gap and turbulence hole can generate a turbulence effect when the mixed gas passes through, thereby achieving re-mixing of the mixed gas.

[0013] Furthermore, the cone apex angle of the inner cone is 119–121°.

[0014] The beneficial effect of adopting the above-mentioned further scheme is that the cone apex angle is close to 120°, which can not only ensure the jet velocity, but also maintain the continuity and focusing of the jet, and improve the energy utilization rate.

[0015] Furthermore, the thickness of the cone surface of the inner cone is 5-7 mm.

[0016] The beneficial effect of adopting the above-mentioned further scheme is that the thickness of the inner cone surface can prevent local tearing and the formation of multiple scattered streams in the early stage of the explosion due to the cone surface being too thin, thereby reducing the concentration. It can also prevent the overall velocity of the jet from being slowed down due to the cone surface being too thick.

[0017] Furthermore, the number of the enhancement rings is two or more, and adjacent enhancement rings are spaced apart along the axial direction of the tank.

[0018] The beneficial effect of adopting the above-mentioned further scheme is that by increasing the number of enhancement rings, the effect of preventing backflow of smoke and dust can be effectively improved.

[0019] Furthermore, it also includes a flow guide bracket, which is arranged along the axial direction of the tank and connected to the inner cone and the efficiency ring respectively.

[0020] The beneficial effect of adopting the above-mentioned further solution is that the flow guide bracket plays a supporting role, ensuring the installation stability of the inner cone and the enhancement ring.

[0021] Furthermore, it also includes multiple connectors, one end of which is fixed to the inner wall of the tank, and the other end of which is connected to the inner cone or the enhancement ring.

[0022] The advantage of adopting the above-mentioned further solution is that it helps to ensure the installation stability of the inner cone and the enhancement ring.

[0023] Furthermore, the flow guide bracket includes at least one pair of support plates, each pair of support plates being symmetrically distributed about the central axis of the tank, one end of each support plate being connected to the inner cone, and the enhancement ring being connected to the middle or the other end of each support plate.

[0024] The beneficial effect of adopting the above-mentioned further solution is that the support plate in the flow guide bracket has a flat structure, which can ensure connection stability and avoid affecting the shock wave jet. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of a shock wave generator with enhanced Munro effect according to the present invention; Figure 2 This is a schematic diagram of the inner cone structure in this invention.

[0026] The attached diagram lists the components represented by each number as follows: 1. Tank body; 2. Inlet; 3. Inner cone; 31. Turbulence gap; 32. Turbulence hole; 4. Enhancement ring; 5. Flow guide support; 6. Shock wave output end. Detailed Implementation

[0027] The principles and features of the present invention are described below. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0028] Example 1 like Figure 1 As shown, a shock wave generator with enhanced Munro effect includes a tank 1. One end of the tank 1 is provided with an inlet 2 for a mixed gas to enter, and the other end of the tank 1 is provided with an outlet and connected to a shock wave output terminal 6. An inner cone 3 and an enhancement ring 4 are assembled inside the tank 1. The inner cone 3 is adjacent to the inlet 2, and the top of the inner cone 3 faces the inlet 2 and is provided with a turbulence channel for the mixed gas to pass through. The enhancement ring 4 is spaced apart from the inner cone 3 along the axial direction of the tank 1, and the central hole of the enhancement ring 4 is connected to the shock wave output terminal 6.

[0029] The beneficial effects of the present invention are: the turbulence channel of the inner cone 3 can remix the mixed gas, thereby improving the mixing degree of the mixed gas. The inner cone 3 and the inside of the tank 1 form a conical cavity. Based on the Munroe effect, the inner cone 3 can both concentrate energy and enhance efficiency during the shock wave generation process, and also indicate the direction of the shock wave to prevent energy loss. The enhancement ring 4 works in conjunction with the inner cone 3 to block the backflow of smoke and dust.

[0030] like Figure 1 , 2 As shown, tank 1 is a hollow cylindrical shape. Figure 1 In this design, an inlet 2 is provided at the upper end of the tank body 1, which communicates with the internal cavity of the tank body 1, allowing a mixture of air and fuel gas to enter the tank body 1 through the inlet 2. An outlet is provided at the other end of the tank body 1, which communicates with the internal cavity of the tank body 1. Simultaneously, a shock wave output end 6 is connected to the outlet for outputting the generated shock wave. Preferably, the shock wave output end 6 has a curved pipe section to guide the shock wave output. An inner cone 3 is fixed inside the tank body 1. Preferably, the inner cone 3 is fixed by welding. To ensure connection stability, the inner cone 3 is positioned inside the tank 1 near the inlet 2, with its top facing the inlet 2 and its concave surface facing the outlet. The interior of the tank 1 between the inner cone 3 and the outlet serves as the shock wave generation zone. In the figure, the top of the inner cone 3 faces upward. The inner cone 3 is equipped with a turbulence channel. After the mixed gas enters the tank 1 from the inlet 2, the turbulence channel creates turbulence in the mixed gas as it passes through the inner cone 3, causing the mixed gas entering the shock wave generation zone to be remixed, thereby enhancing the mixing efficiency. The degree of homogenization facilitates subsequent shock wave generation. The enhancement ring 4 is fixed inside the tank 1. The enhancement ring 4 is made of annular iron plate, and the enhancement ring 4, inner cone 3, and tank 1 are coaxial. Preferably, the enhancement ring 4 is also fixed inside the tank 1 by welding. Along the axial direction of the tank 1, the enhancement ring 4 and inner cone 3 are spaced apart. Preferably, the axial distance between the inner cone 3, enhancement ring 4, and outlet is equal, so that the enhancement ring 4 divides the shock wave generation area into at least two parts. The central hole of each enhancement ring 4 is connected to the outlet. The system ensures that the shock wave generation zone is connected to the shock wave output end 6. After ignition, the flame is conducted to the shock wave generation zone, and the mixed gas rapidly combusts and explodes. The energy generated by the combustion and explosion generates a shock jet under the action of the tank body 1, the inner cone 3, and the enhancement ring 4. Based on the Munroe effect, the energy after the explosion will converge towards the axis inside the concave surface of the inner cone 3, similar to the converging effect of a concave mirror. This causes the formed shock jet to finally be ejected through the outlet of the tank body 1 and the shock wave output end 6, and the annular surface of the enhancement ring 4 blocks the backflow of smoke and dust.

[0031] Example 2 Based on the above embodiment, along the axial direction of the tank 1, the distance between the inner cone 3 and the inlet 2 is smaller than the distance between the enhancement ring 4 and the outlet. This provides sufficient reaction space for shock wave generation, enabling it to accommodate a larger amount of mixed gas and thus improving the energy-concentrating and enhancing effect.

[0032] like Figure 1 As shown, the top of the inner cone 3 is close to the inlet 2 of the tank 1. The distance between the top of the inner cone 3 and the inlet 2 is less than the distance between the enhancement ring 4 and the outlet. In this way, a sufficiently large shock wave generation zone can be formed within the limited space of the tank 1, thereby increasing the energy release intensity by accumulating more mixed gas.

[0033] Example 3 Based on the above embodiment, the enhancement ring 4 is a tapered ring, and the taper of the enhancement ring 4 is equal to the cone apex angle of the inner cone 3. Thus, by using a tapered ring with a certain tilt angle on its surface, it can better withstand pressure and reduce drag, thereby improving the effect of preventing smoke and dust backflow.

[0034] like Figure 1 As shown, the enhancement ring 4 is a tapered annulus with a certain tilt angle. During combustion, the tilted surface of the enhancement ring 4 can assist in energy accumulation to some extent. Simultaneously, when the flue gas recirculates, the tilted surface allows the airflow to slow down and change direction smoothly, preventing turbulence and eddies caused by sudden obstruction, reducing pressure drag, and improving flow stability. Furthermore, the tilted surface can also trap dust, preventing dust accumulation in the horizontal section.

[0035] Example 4 Based on the above embodiment, the turbulence channel is divided into a turbulence gap 31 and turbulence holes 32. The turbulence gap 31 is located between the edge of the inner cone 3 and the inner wall of the tank 1, and the turbulence holes 32 are distributed at the top and conical surface of the inner cone 3. In this way, the turbulence gap 31 and the turbulence holes 32 can generate a turbulence effect when the mixed gas passes through, thereby achieving re-mixing of the mixed gas.

[0036] Specifically, such as Figure 2As shown, the turbulence channel is divided into a turbulence gap 31 and turbulence holes 32. The turbulence gap 31 is located between the edge of the inner cone 3 and the inner wall of the tank 1. That is, the outer diameter of the inner cone 3 is smaller than the inner diameter of the tank 1. The turbulence holes 32 are distributed at the top and the conical surface of the inner cone 3. Preferably, the gap width of the turbulence gap 31 is greater than the space of the turbulence holes 32, and the diameter of the turbulence holes 32 at the top is greater than that of the turbulence holes 32 on the conical surface. The turbulence holes 32 on the conical surface are symmetrically and dispersedly distributed on the conical surface, which facilitates the formation of a uniform turbulence effect on the mixed gas. When the mixed gas enters the tank 1, the mixed gas is dispersed due to the obstruction of the inner cone 3. A small part of the mixed gas enters the shock wave generation zone from the turbulence holes 32 at the top of the inner cone 3, and the remaining mixed gas enters the shock wave generation zone through the turbulence gap 31. The mixed gas entering from different channels converges again in the shock wave generation zone, thereby completing the remixing of the mixed gas.

[0037] In this embodiment, the flame enters from the inlet 2 of the tank 1, and the turbulence hole 32 can also rapidly ignite the mixed gas in the shock wave generation zone, thereby forming a shock wave in the shock wave generation zone.

[0038] It should be noted that only a tiny portion of the shock wave energy is reflected back from the turbulence channel of the inner cone 3, which is negligible relative to the overall energy.

[0039] Example 5 Based on the above embodiment, the cone apex angle of the inner cone 3 is 119-121°. Thus, the cone apex angle is close to 120°, which can ensure the jet velocity, maintain the continuity and focusing of the jet, and improve energy utilization.

[0040] Preferably, the cone apex angle of the inner cone 3 is 120°. Although the inner cone 3 can generate a shock jet with a higher initial velocity when the cone apex angle is less than 120°, the shock jet is thin and easy to break. When the cone apex angle is greater than 120°, the jet velocity it can form is low and the penetration is insufficient. The cone apex angle of the inner cone is 120°, which can ensure sufficient jet velocity and maintain the continuity and focusing of the jet.

[0041] Furthermore, the taper of the synergistic ring 4 is also 120°.

[0042] Example 6 Based on the above embodiments, the thickness of the inner cone 3 is 5-7 mm. This thickness of the inner cone 3 prevents localized tearing and the formation of multiple scattered streams in the early stages of the explosion due to an excessively thin cone, thus reducing concentration. It also prevents the overall jet velocity from being slowed down due to an excessively thick cone.

[0043] In this embodiment, the inner cone 3 is preferably made of metal, and its cone surface is 6mm thick, so that the thickness of the cone surface is not too thin, which would cause the jet to break or fragment, nor too thick, which would slow down the jet speed.

[0044] Example 7 Based on the above embodiment, the number of enhancing rings 4 is two or more, with adjacent enhancing rings 4 spaced apart along the axial direction of the tank body 1. Thus, by increasing the number of enhancing rings 4, the effect of preventing backflow of smoke and dust can be effectively improved.

[0045] like Figure 1 As shown, in this embodiment, two enhancement rings 4 are provided inside the tank 1. The two enhancement rings 4 divide the shock wave generation zone into three parts. Of course, when the axial length of the tank 1 is large, more enhancement rings 4 can be provided.

[0046] Example 8 Based on the above embodiment, a flow guide bracket 5 is also included. The flow guide bracket 5 is arranged along the axial direction of the tank body 1 and is connected to the inner cone 3 and the enhancement ring 4 respectively. In this way, the flow guide bracket 5 plays a supporting role, ensuring the installation stability of the inner cone 3 and the enhancement ring 4.

[0047] In this embodiment, the flow guide bracket 5 connects the inner cone 3 and the enhancement ring 4 together along the axial direction of the tank body 1, so that the distance between the inner cone 3 and the enhancement ring 4 is relatively fixed, thus ensuring structural stability.

[0048] Example 9 Based on the above embodiments, multiple connectors are also included. One end of each connector is fixed to the inner wall of the tank 1, and the other end of each connector is connected to the inner cone 3 or the enhancement ring 4. This helps to ensure the installation stability of the inner cone 3 and the enhancement ring 4.

[0049] Specifically, in this embodiment, the connector is arranged radially inside the tank 1, and the connector is welded to the inner wall of the tank 1 and the inner cone 3. The connection between the connector and the inner cone 3 and the tank 1 does not obstruct the mixed gas from passing through the turbulence channel. Similarly, the connector is also welded to the inner wall of the tank 1 and the efficiency ring 4.

[0050] It should be noted that the connecting parts between the inner cone 3 and the inner wall of the tank 1, and the connecting parts between the enhancement ring 4 and the inner wall of the tank 1, can have the same or different structures, and their number, size and connection position can be adjusted according to actual needs.

[0051] Example 10 Based on the above embodiments, the flow guide bracket 5 includes at least one pair of support plates, each pair of support plates being symmetrically distributed about the central axis of the tank 1. One end of each support plate is connected to the inner cone 3, and the enhancement ring 4 is connected to the middle or the other end of each support plate. Thus, the support plates in the flow guide bracket 5 have a flat structure, which ensures connection stability and avoids affecting shock wave jetting.

[0052] Preferably, the flow guide bracket 5 includes two pairs of support plates, each pair of support plates is symmetrically distributed about the central axis of the tank 1, and is arranged at equal intervals along the circumference of the tank 1. The length direction of each support plate is along the axial direction of the tank 1, and the width direction of each support plate is along the radial direction of the tank 1, so as to avoid the small interval between two adjacent support plates from affecting the shock wave jet. At the same time, the plate surface of the support plate can provide a certain guiding effect for the shock wave jet.

[0053] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0054] 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.

[0055] 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.

[0056] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0057] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are 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.

[0058] 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.

Claims

1. A shock wave generator with enhanced Munroe effect, characterized in that, The device includes a tank (1), one end of which is provided with an inlet (2) for the mixed gas to enter, and the other end of which is provided with an outlet and connected to a shock wave output end (6). The tank (1) is equipped with an inner cone (3) and an enhancement ring (4). The inner cone (3) is adjacent to the inlet (2), and the top of the inner cone (3) faces the inlet (2) and is provided with a turbulence channel for the mixed gas to pass through. The enhancement ring (4) is spaced apart from the inner cone (3) along the axial direction of the tank (1), and the central hole of the enhancement ring (4) is connected to the shock wave output end (6).

2. The shock wave generator with enhanced Munro effect according to claim 1, characterized in that, Along the axial direction of the tank body (1), the distance between the inner cone (3) and the inlet (2) is less than the distance between the enhancement ring (4) and the outlet.

3. The shock wave generator with enhanced Munro effect according to claim 1, characterized in that, The enhancement ring (4) is a tapered ring, and the tapering of the enhancement ring (4) is equal to the cone apex angle of the inner cone (3).

4. The shock wave generator with enhanced Munro effect according to claim 1, characterized in that, The turbulence channel is divided into a turbulence gap (31) and a turbulence hole (32). The turbulence gap (31) is located between the edge of the inner cone (3) and the inner wall of the tank (1). The turbulence hole (32) is distributed at the top and the conical surface of the inner cone (3).

5. The shock wave generator with enhanced Munro effect according to claim 4, characterized in that, The cone apex angle of the inner cone (3) is 119-121°.

6. The shock wave generator with enhanced Munro effect according to claim 4, characterized in that, The thickness of the cone surface of the inner cone (3) is 5-7 mm.

7. The shock wave generator with enhanced Munro effect according to claim 1, characterized in that, The number of the enhancement rings (4) is two or more, and two adjacent enhancement rings (4) are spaced apart along the axial direction of the tank body (1).

8. The shock wave generator with enhanced Munro effect according to claim 1, characterized in that, It also includes a flow guide bracket (5), which is arranged along the axial direction of the tank body (1) and connected to the inner cone (3) and the enhancement ring (4) respectively.

9. A shock wave generator with enhanced Munro effect according to claim 8, characterized in that, It also includes multiple connectors, one end of which is fixed to the inner wall of the tank (1), and the other end of which is connected to the inner cone (3) or the enhancement ring (4).

10. A shock wave generator with enhanced Munro effect according to claim 8, characterized in that, The flow guide bracket (5) includes at least one pair of support plates, each pair of support plates being symmetrically distributed about the central axis of the tank (1), one end of each support plate being connected to the inner cone (3), and the enhancement ring (4) being connected to the middle or the other end of each support plate.

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