Water-cooling spray burning nozzle

Abstract

The utility model relates to the technical field of spray burners, and provides a water-cooling spray burner. The device comprises a shell and a water retaining piece, the shell is annularly arranged on a nozzle of the spray burning nozzle in a sleeving mode, a pressure stabilizing chamber, a cooling chamber and a recycling chamber which are sequentially communicated in series are arranged in the shell, the pressure stabilizing chamber is far away from the outer wall of the nozzle, and the cooling chamber is attached to the outer wall of the nozzle; cooling water sequentially flows through the pressure stabilizing chamber, the cooling chamber and the recovery chamber; the water retaining sheet is assembled in the shell through a spring; the water retaining piece cuts off water flow between the pressure stabilizing chamber and the cooling chamber under the action of elastic force of the spring, and when water pressure in the pressure stabilizing chamber reaches a rated value, the water retaining piece is jacked open to enable the pressure stabilizing chamber to be communicated with the cooling chamber. According to the water-cooling spray combustion nozzle, the spray combustion nozzle can be cooled through annular water flow which surrounds the outer wall of the spray combustion nozzle by a circle and flows along the outer wall of the spray combustion nozzle, and the cooling uniformity is better.

Description

TECHNICAL FIELD

[0001] The utility model relates to a spray combustion nozzle technical field especially is related to a water -cooled spray combustion nozzle. BACKGROUND

[0002] The spray combustion nozzle is one of important structures of the boiler. When the boiler fuel is liquid fuel, the spray combustion nozzle is used to atomize and spray the fuel, and then the fuel and air are fully contacted and combusted. In the continuous use process of the boiler, the spray combustion nozzle needs to be cooled to protect the spray combustion nozzle.

[0003] In the prior art, the cooling water is mainly realized by the water-cooling effect of the flow around the spray combustion nozzle. However, due to the high temperature of the spray combustion nozzle, the water temperature changes rapidly, the temperature difference of the cooling water near the water inlet and the water outlet is large, the cooling is not uniform in the radial direction of the spray combustion nozzle, and stress is easily generated in the internal part of the spray combustion nozzle, which leads to deformation. UTILITY MODEL CONTENTS

[0004] The utility model discloses a water-cooled spray combustion nozzle, which can cool the spray combustion nozzle through the annular water flow flowing around the outer wall of the spray combustion nozzle and along the outer wall of the spray combustion nozzle, and the cooling uniformity is better.

[0005] The utility model provides a water -cooled spray combustion nozzle, comprising:

[0006] The shell is circularly sleeved on the nozzle of the spray combustion nozzle, and the stable pressure chamber, the cooling chamber and the recovery chamber are sequentially connected in the shell.

[0007] The cooling water flows through the stable pressure chamber, the cooling chamber and the recovery chamber in sequence.

[0008] The water baffle is assembled in the stable pressure chamber and the cooling chamber communication place in the shell through the spring, and the both ends of the spring are fixedly connected with the inner wall of the shell and the water baffle respectively.

[0009] The water baffle cuts off the water flow between the stable pressure chamber and the cooling chamber under the elastic force of the spring, and opens the stable pressure chamber and the cooling chamber communication when the water pressure in the stable pressure chamber reaches the rated value.

[0010] Preferably, the cooling chamber is hollow circular table and is sleeved on the outer wall of the nozzle, the small end of the cooling chamber is communicated with the stable pressure chamber, and the big end of the cooling chamber is communicated with the recovery chamber.

[0011] Preferably, the stable pressure chamber is sleeved outside the cooling chamber.

[0012] Preferably, the cooling chamber is provided with baffles which are evenly distributed around the nozzle and are arranged perpendicularly to the outer wall of the nozzle.

[0013] Preferably, the recovery chamber is provided with a baffle which is arranged perpendicularly to the baffles.

[0014] Preferably, the springs are evenly distributed around the nozzle.

[0015] Preferably, the water-cooled nozzle further comprises a guide assembly comprising a guide post and a guide sleeve, the guide post being fixedly connected to the water baffle, the guide sleeve being fixedly connected to the inner wall of the shell, and the spring being sleeved on the guide assembly.

[0016] Preferably, the water inlet of the pressure stabilizing chamber is connected to the pressure stabilizing chamber from bottom to top, and the water outlet of the recovery chamber is connected to the recovery chamber from top to bottom.

[0017] Preferably, the water pressure pushes the water baffle away from the inner wall of the shell to form a gap, and the cooling water enters the cooling chamber from the pressure stabilizing chamber through the gap.

[0018] Preferably, the pressure stabilizing chamber and the cooling chamber are connected through a water passage, the water baffle covers the water passage under the elastic force of the spring, and the water baffle slides along the inner wall of the shell under the water pressure to expose the water passage and connect the pressure stabilizing chamber and the cooling chamber.

[0019] The technical scheme of the utility model discloses an annular pressure stabilizing chamber, a cooling chamber and a recovery chamber are divided in the annular shell, the pressure stabilizing chamber is closed by the water baffle, when the water pressure in the pressure stabilizing chamber reaches the rated value and opens the water baffle, the pressure stabilizing chamber will output the stable annular water flow to the cooling chamber, the annular water flow flows along the outer wall of the nozzle to carry out the water cooling work, and finally flows into the recovery chamber, so that the more uniform water cooling effect in the radial direction is realized. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the specific embodiment of the utility model or the technical scheme in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiment or the prior art description, and obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating the creative labor.

[0021] Figure 1 It is a sectional view of the water-cooled nozzle of the utility model;

[0022] Figure 2 It is Figure 1 It is the assembly drawing of the baffle and the baffle in the water-cooled nozzle;

[0023] Figure 3 As Figure 1 Assembly view of the guide assembly at A in the water-cooled injection nozzle;

[0024] Figure 4 As Figure 1 Cross-sectional view of the water-cooled injection nozzle when the pressure stabilizing chamber is arranged in the cooling chamber;

[0025] Figure 5 As Figure 4 Assembly view of the flow separation plate and the flow blocking plate in the water-cooled injection nozzle.

[0026] Explanation of reference signs:

[0027] 01, water inlet; 02, water outlet; 1, shell; 11, pressure stabilizing chamber; 12, cooling chamber; 13, recovery chamber; 14, water passage; 2, water blocking piece; 21, spring; 22, guide column; 23, guide sleeve; 31, flow separation plate; 32, flow blocking plate. DETAILED DESCRIPTION

[0028] The technical solutions of the present application will be described clearly and completely below in conjunction with embodiments. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0029] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0030] In the description of this utility model, it should be understood that 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 indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] First embodiment:

[0032] Combination Figures 1 to 3 As shown, the water-cooled burner provided by this utility model includes a shell and a water baffle 2.

[0033] Combination Figures 1 to 3 As shown, the housing is annularly fitted onto the nozzle of the burner. The housing contains three independent spaces: a pressure stabilizing chamber 11, a cooling chamber 12, and a recovery chamber 13. The pressure stabilizing chamber 11 is away from the outer wall of the nozzle, and the cooling chamber 12 is attached to the outer wall of the nozzle. The water inlet 01 is connected to the pressure stabilizing chamber 11, and the water outlet 02 is connected to the recovery chamber 13. The three independent spaces are connected in series, and cooling water flows through the pressure stabilizing chamber 11, the cooling chamber 12, and the recovery chamber 13 in sequence.

[0034] The water baffle 2 is assembled with a spring 21 at the connection between the pressure stabilizing chamber 11 and the cooling chamber 12 inside the housing. The two ends of the spring 21 are fixedly connected to the inner wall of the housing and the water baffle 2, respectively. The pressure stabilizing chamber 11 and the cooling chamber 12 are connected by a water passage hole 14. Under the elastic force of the spring 21, the water baffle 2 covers the water passage hole 14 and cuts off the water flow between the pressure stabilizing chamber 11 and the cooling chamber 12. When the water pressure in the pressure stabilizing chamber 11 reaches the rated value, the cooling water pushes the water baffle 2 to slide along the inner wall of the housing, so that the water passage hole 14 is exposed and connects the pressure stabilizing chamber 11 and the cooling chamber 12.

[0035] Working process: Cooling water enters the pressure stabilizing chamber 11 through the inlet 01. Under the action of the baffle plate 2, the cooling water continuously accumulates in the pressure stabilizing chamber 11. When the water pressure in the pressure stabilizing chamber 11 reaches the rated value, the cooling water will push the baffle plate 2 to connect the pressure stabilizing chamber 11 and the cooling chamber 12. The cooling water fully contacts the outer wall of the nozzle in the cooling chamber 12 to carry out water cooling. Then the cooling water flows into the recovery chamber 13 and is discharged through the outlet 02.

[0036] In this embodiment, the annular housing is divided into annular pressure stabilization chamber 11, cooling chamber 12 and recovery chamber 13. When the water pressure in the pressure stabilization chamber 11 reaches the rated value and the water baffle 2 is opened, the pressure stabilization chamber 11 outputs stable annular water flow to the cooling chamber 12. The annular water flow flows along the outer wall of the nozzle for water cooling, and finally flows into the recovery chamber 13, finally realizing more uniform water cooling effect in the radial direction.

[0037] In some embodiments, in combination with Figure 3 As shown, the water-cooled injection nozzle further comprises guide posts 22 and guide sleeves 23, which constitute a guide assembly assembled between the water baffle 2 and the inner wall of the housing, guiding the movement of the water baffle 2 and improving the stability of the movement of the water baffle 2; wherein the guide posts 22 are fixedly connected to the water baffle 2, and the guide sleeves 23 are fixedly connected to the inner wall of the housing, and the springs 21 can be sleeved on the guide assembly, so that the guide assembly can also improve the stability of the extension and deformation of the springs 21. The water baffle 2 should be fixed and supported by multiple springs 21, which are evenly distributed around the nozzle to ensure the stability of the support.

[0038] In some embodiments, in combination with Figure 1 , Figure 2 As shown, the water inlet 01 of the pressure stabilization chamber 11 is connected to the pressure stabilization chamber 11 from bottom to top, and the water outlet 02 of the recovery chamber 13 is connected to the recovery chamber 13 from top to bottom. Since the cooling water expands naturally upward after being heated, the design of the water inlet 01 at the bottom and the water outlet 02 at the top can make the cooling water flow more smoothly.

[0039] In some embodiments, in combination with Figure 2 As shown, the annular cooling chamber 12 divides the internal water flow into multiple independent water flows by the built-in flow partition plate 31, wherein the flow partition plate 31 is evenly arranged around the outer wall of the nozzle, and each flow partition plate 31 is arranged vertically to the outer wall of the nozzle along the jetting direction of the nozzle. The flow partition plate 31 can improve the stability of the water flow in the cooling chamber 12, and avoid the cooling water from climbing upward along the outer wall of the nozzle after being heated and expanded, which disturbs the internal water flow.

[0040] In some embodiments, in combination with Figure 2 As shown, the recovery chamber 13 is provided with a flow baffle 32, one end of the flow baffle 32 is abutted to the water outlet 02 and bisects the water outlet 02, and the other end of the flow baffle 32 horizontally covers half of the area of the cooling chamber 12. The flow baffle 32 is fixed on the inner wall of the housing perpendicularly to the flow partition plate 31. The flow baffle 32 can avoid the water flow close to the water outlet 02 from cutting off the water flow away from the water outlet 02 and flowing back into the water outlet 02, so that the cooling water in the recovery chamber 13 can flow more smoothly to the water outlet 02.

[0041] The second embodiment, as shown in Figures 4 to 5

[0042] The main difference between the second embodiment and the first embodiment is the shape and position of the pressure stabilization chamber 11 and the cooling chamber 12 and the way the water baffle 2 communicates the pressure stabilization chamber 11 and the cooling chamber 12.

[0043] The cooling chamber 12 is a hollow circular truncated cone, which is sleeved on the outer wall of the nozzle, the small end of the cooling chamber 12 communicates with the pressure stabilization chamber 11 and is close to the jet end of the nozzle, the large end of the cooling chamber 12 communicates with the recovery chamber 13, and the pressure stabilization chamber 11 is sleeved outside the cooling chamber 12.

[0044] The water hole 14 is cancelled, and under the action of water pressure, the cooling water pushes the water baffle 2 away from the inner wall of the shell to form a gap, and the cooling water enters the cooling chamber 12 from the pressure stabilization chamber 11 through the gap.

[0045] In this embodiment, the superposition of the pressure stabilization chamber 11 and the cooling chamber 12 makes the structure more compact, and at the same time meets the requirements that the pressure stabilization chamber 11 is away from the outer wall of the nozzle and the cooling chamber 12 is close to the outer wall of the nozzle, and the shape of the cooling chamber 12 can even guide the water flow,

[0046] Because the volume of the cooling water will expand after being heated, and the larger the cross-sectional area of the cooling chamber 12 is, the more the cooling water will move to one side after being heated and expanded, so that the flow of the cooling water can be improved.

[0047] Figure 4 The arrow in the figure indicates the direction of the fuel injection in the nozzle, and the cooling water first enters the small end of the cooling chamber 12, at which time the water temperature is the lowest and the cooling effect is the best; the closer to the jet end of the nozzle, the higher the temperature and the greater the demand for cooling, and the closer the small end of the cooling chamber 12 to the jet end of the nozzle, the better the cooling effect.

[0048] Figure 5 The flow partition plate 31 and the flow baffle 32 in the figure are directly connected together, which completely separates the two parts of the water flow close to the water outlet 02 and away from the water outlet, so that the effect of the flow baffle 32 is further improved.

[0049] Finally, it should be pointed out that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.​

Claims

1. A water-cooled burner nozzle, characterized in that, include: The housing is annularly fitted onto the nozzle of the burner. Inside the housing are a pressure stabilizing chamber (11), a cooling chamber (12) and a recovery chamber (13) connected in series. The pressure stabilizing chamber (11) is away from the outer wall of the nozzle, and the cooling chamber (12) is attached to the outer wall of the nozzle. Cooling water flows sequentially through the pressure stabilizing chamber (11), the cooling chamber (12), and the recovery chamber (13); A water baffle (2) is assembled at the connection between the pressure stabilizing chamber (11) and the cooling chamber (12) inside the housing by means of a spring (21). The two ends of the spring (21) are respectively fixedly connected to the inner wall of the housing and the water baffle (2). The water baffle (2) cuts off the water flow between the pressure stabilizing chamber (11) and the cooling chamber (12) under the elastic force of the spring (21). When the water pressure in the pressure stabilizing chamber (11) reaches the rated value, the water baffle (2) is pushed open to connect the pressure stabilizing chamber (11) and the cooling chamber (12).

2. The water-cooled burner according to claim 1, characterized in that, The cooling chamber (12) is a hollow frustum fitted on the outer wall of the nozzle. The small end of the cooling chamber (12) is connected to the pressure stabilizing chamber (11), and the large end of the cooling chamber (12) is connected to the recovery chamber (13).

3. The water-cooled burner according to claim 2, characterized in that, The pressure stabilizing chamber (11) is fitted outside the cooling chamber (12).

4. The water-cooled burner according to claim 1, characterized in that, The cooling chamber (12) is surrounded by baffles (31) evenly distributed around the outer wall of the nozzle. The baffles (31) are arranged perpendicular to the outer wall of the nozzle along the nozzle direction.

5. The water-cooled burner according to claim 4, characterized in that, The recovery chamber (13) is provided with a baffle plate (32), which is set perpendicular to the baffle plate (31).

6. The water-cooled burner according to claim 1, characterized in that, The springs (21) are evenly distributed around the nozzle.

7. The water-cooled burner according to claim 1, characterized in that, It also includes a guide assembly, which includes a guide post (22) and a guide sleeve (23). The guide post (22) is fixedly connected to the water baffle (2), and the guide sleeve (23) is fixedly connected to the inner wall of the housing. The spring (21) is sleeved on the guide assembly.

8. The water-cooled burner according to claim 1, characterized in that, The inlet (01) of the pressure stabilizing chamber (11) is connected to the pressure stabilizing chamber (11) from bottom to top, and the outlet (02) of the recovery chamber (13) is connected to the recovery chamber (13) from top to bottom.

9. The water-cooled burner according to claim 1, characterized in that, Water pressure pushes the baffle plate (2) away from the inner wall of the housing to form a gap, and cooling water enters the cooling chamber (12) through the pressure stabilizing chamber (11) through the gap.

10. The water-cooled burner according to claim 1, characterized in that, The pressure stabilizing chamber (11) and the cooling chamber (12) are connected through a water passage (14). Under the elastic force of the spring (21), the water baffle (2) covers the water passage (14). Under the action of water pressure, the water baffle (2) slides along the inner wall of the housing, causing the water passage (14) to be exposed and connected to the pressure stabilizing chamber (11) and the cooling chamber (12).

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