A high pressure combustion chamber cooling device for high velocity oxy-fuel spraying

Abstract

The utility model relates to combustion chamber cooling technical field, specifically disclose a kind of high-pressure combustion chamber cooling device for supersonic flame spraying, it include: base, the top of base is fixedly connected with water tank, the top of base is fixedly connected with support, the inside of support is fixedly connected with combustion chamber, the surface of combustion chamber is fixed and has sleeve ring, the inside of combustion chamber is equipped with inner chamber, the inside of combustion chamber is equipped with cooling cavity, the side of water tank top is fixed and is fixedly connected with water supply pump, the water outlet end of water supply pump is fixedly connected with water delivery pipe, the bottom end of water delivery pipe is fixedly connected with circulation pipe, the bottom end of circulation pipe is fixedly connected with return pipe;The utility model is through the collocation use of water tank, water supply pump, circulation pipe, cooling cavity, cold gas pipe, drive motor and fan blade, so that combustion chamber can be cooled to a certain extent when using, avoid the case that its inside heat deformation occurs due to internal temperature is too high, further guarantee the stability of combustion chamber.

Description

Technical Field

[0001] This utility model belongs to the field of combustion chamber cooling technology, specifically relating to a high-pressure combustion chamber cooling device for supersonic flame spraying. Background Technology

[0002] Supersonic flame spraying utilizes hydrocarbon fuels such as propane and propylene, or hydrogen and high-pressure oxygen, to burn in a combustion chamber or special nozzle, generating a high-temperature, high-speed combustion flame. Powder material is axially fed into this flame, heated to a molten or semi-molten state, and accelerated to speeds of 300-500 m / s or even higher, impacting the substrate surface to form a coating. Supersonic flame spraying generates a high-temperature, high-speed flame through a high-pressure combustion chamber, but the combustion chamber wall temperature may exceed 1000℃. When the heat load is high and there is no proper cooling, the operating temperature may exceed the material's maximum withstand temperature, resulting in thermal failures such as creep, melting, and thermal fatigue, thereby reducing the service life of the combustion chamber. Therefore, the use of a cooling device is essential when using the combustion chamber. Utility Model Content

[0003] The purpose of this invention is to provide a high-pressure combustion chamber cooling device for supersonic flame spraying, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A high-pressure combustion chamber cooling device for supersonic flame spraying includes: a base, a water tank fixedly connected to the top of the base, a support fixedly connected to the top of the base, a combustion chamber fixedly connected inside the support, a collar fixedly fitted to the surface of the combustion chamber, an inner cavity formed inside the combustion chamber, a cooling chamber formed inside the combustion chamber, a water supply pump fixedly connected and extending through one side of the top of the water tank, an extraction pipe fixedly connected to the inlet end of the water supply pump, a water delivery pipe fixedly connected to the outlet end of the water supply pump, the surface of the water delivery pipe extending through the interior of the cooling chamber, a circulation pipe fixedly connected to the bottom end of the water delivery pipe, the circulation pipe fixedly and wound around the inner wall of the cooling chamber, and a return water pipe fixedly connected to the bottom end of the circulation pipe, the bottom end of the return water pipe fixedly and extending through the interior of the water tank.

[0006] Preferably, a cooling pipe is fixedly connected to the inner wall of the collar, a sleeve is fixedly connected to and passes through the interior of the cooling chamber, a protective shell is fixedly connected to the interior of the sleeve, a drive motor is fixedly connected to the interior of the protective shell, a fan blade is fixedly connected to the output end of the drive motor, and six cooling ports are opened inside the cooling pipe.

[0007] Preferably, the collar is internally fixed and has a connecting tube extending through it, and the connecting tube is internally fixedly connected to a connecting pipe.

[0008] Preferably, the surface of the cooling chamber is provided with four air outlets, and the inner sidewalls of the air outlets are threaded with sealing blocks.

[0009] Preferably, a disc is fixedly connected to one side of the sealing block, a filter plate is fixedly connected inside the disc, and two short rods are fixedly connected to the surface of the disc.

[0010] Preferably, an observation port is provided on one side of the water tank, and a water inlet is provided on one side of the top of the water tank. A sealing cap is threaded onto the surface of the water inlet, and a control panel is fixedly connected to the top of one side of the water tank surface. The control panel is electrically connected to the water supply pump and the drive motor respectively.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] (1) The water source in the water tank is delivered to the circulation pipe by the water supply pump. The circulation pipe is wrapped around the inner wall of the cooling chamber, which increases the contact area with the cooling chamber and thus improves the cooling efficiency. The setting of the cold air pipe, cold air inlet and fan blade further enhances the cooling effect. The fan blade rotates to draw the cold air near the cold air pipe and deliver it into the cooling chamber. Together with the circulation pipe, it cools the combustion chamber and achieves a double cooling effect, avoiding the situation where the temperature inside the combustion chamber is too high and deformation occurs.

[0013] (2) A sealing block and a filter plate are installed at the air outlet. The filter plate can prevent external dust from entering the cooling chamber and prevent dust from adhering to the surface of the circulation pipe and affecting the cooling effect. It can be quickly removed and cleaned in advance each time the cold air is discharged from the inside of the cooling chamber to the outside, so as to prevent the gas from blowing the dust when it is discharged. Attached Figure Description

[0014] Figure 1 This is a perspective view of the present utility model;

[0015] Figure 2 This is a cross-sectional view of the cooling cavity of this utility model;

[0016] Figure 3 This is a cross-sectional view of the circulation pipe of this utility model;

[0017] Figure 4 This is a cross-sectional view of the sealing block of this utility model;

[0018] In the diagram: 1. Base; 2. Water tank; 3. Combustion chamber; 4. Collar ring; 5. Inner cavity; 6. Cooling cavity; 7. Water supply pump; 8. Water supply pipe; 9. Circulation pipe; 10. Return water pipe; 11. Cooling pipe; 12. Connecting sleeve; 13. Drive motor; 14. Fan blade; 15. Connecting pipe; 16. Air outlet; 17. Sealing block; 18. Disc; 19. Filter plate; 20. Short rod; 21. Cooling vent. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Example 1:

[0021] Please see Figures 1 to 4 As shown, a high-pressure combustion chamber cooling device for supersonic flame spraying includes a base 1, a water tank 2 fixedly connected to the top of the base 1, a bracket fixedly connected to the top of the base 1, a combustion chamber 3 fixedly connected inside the bracket, a collar 4 fixedly fitted to the surface of the combustion chamber 3, an inner cavity 5 opened inside the combustion chamber 3, a cooling chamber 6 opened inside the combustion chamber 3, a water supply pump 7 fixedly connected and passing through one side of the top of the water tank 2, an extraction pipe fixedly connected to the inlet end of the water supply pump 7, a water delivery pipe 8 fixedly connected to the outlet end of the water supply pump 7, and the surface of the water delivery pipe 8 passing through the interior of the cooling chamber 6, a circulation pipe 9 fixedly connected to the bottom end of the water delivery pipe 8, and the circulation pipe 9 fixedly and wound around the inner wall of the cooling chamber 6, a return water pipe 10 fixedly connected to the bottom end of the circulation pipe 9, and the bottom end of the return water pipe 10 fixedly and passing through the interior of the water tank 2.

[0022] The water tank 2 stores water within it, and the collar 4 fits onto the surface of the combustion chamber 3. The cooling chamber 6 cools the area near the inner wall of the combustion chamber 3. The water supply pump 7, extraction pipe, and water delivery pipe 8 deliver water from the water tank 2 to the circulation pipe 9. The circulation pipe 9 winds around the inner wall of the cooling chamber 6, increasing the contact area and improving the cooling effect between the inner chamber 5 and the cooling chamber 6. The return pipe 10 guides the water delivered from the circulation pipe 9 back to the water tank 2 for subsequent circulation.

[0023] A cooling pipe 11 is fixedly connected to the inner wall of the collar 4. A connecting sleeve 12 is fixedly connected to and passes through the interior of the cooling chamber 6. A protective shell is fixedly connected to the interior of the connecting sleeve 12. A drive motor 13 is fixedly connected to the interior of the protective shell. A fan blade 14 is fixedly connected to the output end of the drive motor 13. Six cooling ports 21 are opened inside the cooling pipe 11. A certain amount of cold air will be generated on the surface of the cooling pipe 11. The setting of the connecting sleeve 12 allows the protective shell to be fixed. The fixed protective shell allows the drive motor 13 to be fixed. The drive motor 13 provides a certain driving force for the rotation of the fan blade 14. After the fan blade 14 rotates, it will draw the cold air discharged from the cooling ports and transport it into the interior of the cooling chamber 6 to work with the circulation pipe 9 to cool down. The bottom of the connecting sleeve 12 has a hollow design to facilitate the transmission of cold air. The positions of the cooling ports 21 and the connecting sleeve 12 correspond to ensure that the cold air inside the cooling pipe 11 can be drawn out.

[0024] The collar 4 has a connecting pipe fixed inside and passing through it, and the connecting pipe 15 is fixedly connected inside the connecting pipe. The top end of the connecting pipe 15 is connected to the equipment that provides cold air (not shown in the figure). The cooling equipment can provide a large amount of cold air to the air cooler and deliver it to the inside of the air cooler pipe 11, thereby achieving the purpose of connecting the air cooler pipe 11 and the cooling equipment through the connecting pipe 15. The connecting pipe 15 serves the purpose of delivery.

[0025] The surface of the cooling chamber 6 has four air vents 16, and the inner sidewalls of the air vents 16 are threaded with sealing blocks 17. The opening of the air vents 16 makes it easy for the gas inside the cooling chamber 6 to be discharged.

[0026] A disc 18 is fixedly connected to one side of the sealing block 17. A filter plate 19 is fixedly connected inside the disc 18. Two short rods 20 are fixedly connected to the surface of the disc 18. The sealing block 17 secures the disc 18 and facilitates the fixation of the filter plate 19. The filter plate 19 prevents external dust from entering the cooling chamber 6 and adhering to the surface of the circulation pipe 9, thus affecting the cooling effect. The short rods 20 allow the operator to rotate the sealing block 17 and unscrew it from the air outlet 16.

[0027] An observation port is provided on one side of water tank 2, and a water inlet is provided on one side of the top of water tank 2. A sealing cap is threaded onto the surface of the water inlet. A control panel is fixedly connected to the top of one side of water tank 2, and the control panel is electrically connected to the water supply pump 7 and the drive motor 13. The observation port allows the operator to observe the water level inside water tank 2, the water inlet allows the operator to add water to water tank 2, and the sealing cap covers the water inlet to prevent dust and impurities from entering the water tank 2.

[0028] The working principle of this utility model is as follows: When the operator needs to cool the interior of the combustion chamber 3, the operator controls the water supply pump 7 to operate. The water supply pump 7 draws water from the water tank 2 through the extraction pipe, then delivers it to the water supply pipe 8, and then to the circulation pipe 9. The circulation pipe 9 cools the connection between the inner wall of the cooling chamber 6 and the inner cavity 5, thus reducing the temperature inside the combustion chamber 3 to a certain extent. The circulating water finally returns to the water tank 2 through the return pipe 10 for subsequent circulation. At the same time, the operator can turn on the drive motor 13. The output end drives the fan blade 14 to rotate, which draws the cold air discharged from the cold air pipe 11 through the cold air port and delivers it to the cooling chamber 6 to cool the connection between the cooling chamber 6 and the inner chamber 5. Through double-layer cooling, the cooling effect is further improved. The gas inside the cooling chamber 6 will eventually be discharged through the air outlet 16. Before starting work, the staff can remove the blocking block 17 with the short rod 20 and then clean the filter plate 19 to prevent the gas from passing through the filter plate 19 and blowing some impurities on the filter plate 19 when it is discharged through the air outlet 16, which would have a certain impact on the surrounding environment.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-pressure combustion chamber cooling device for supersonic flame spraying, characterized in that, include: A base (1) is provided, a water tank (2) is fixedly connected to the top of the base (1), a bracket is fixedly connected to the top of the base (1), a combustion chamber (3) is fixedly connected inside the bracket, a collar (4) is fixedly fitted to the surface of the combustion chamber (3), an inner cavity (5) is opened inside the combustion chamber (3), a cooling cavity (6) is opened inside the combustion chamber (3), a water supply pump (7) is fixedly connected to one side of the top of the water tank (2), and the water supply pump (7) is... The inlet end of the water supply pump (7) is fixedly connected to a suction pipe, the outlet end of the water supply pump (7) is fixedly connected to a water delivery pipe (8), and the surface of the water delivery pipe (8) penetrates the interior of the cooling chamber (6). The bottom end of the water delivery pipe (8) is fixedly connected to a circulation pipe (9), and the circulation pipe (9) is fixedly and wound around the inner wall of the cooling chamber (6). The bottom end of the circulation pipe (9) is fixedly connected to a return water pipe (10), and the bottom end of the return water pipe (10) is fixedly and penetrates the interior of the water tank (2).

2. The high-pressure combustion chamber cooling device for supersonic flame spraying according to claim 1, characterized in that: The inner wall of the collar (4) is fixedly connected to a cooling pipe (11), the inside of the cooling chamber (6) is fixed and penetrated by a sleeve (12), the inside of the sleeve (12) is fixedly connected to a protective shell, the inside of the protective shell is fixedly connected to a drive motor (13), the output end of the drive motor (13) is fixedly connected to a fan blade (14), and the inside of the cooling pipe (11) has six cooling ports (21).

3. The high-pressure combustion chamber cooling device for supersonic flame spraying according to claim 1, characterized in that: The collar (4) is fixed inside and has a connecting pipe running through it, and the connecting pipe is fixedly connected to a connecting pipe (15).

4. The high-pressure combustion chamber cooling device for supersonic flame spraying according to claim 1, characterized in that: The surface of the cooling chamber (6) is provided with four air outlets (16), and the inner sidewall of the air outlets (16) is threaded with a sealing block (17).

5. A high-pressure combustion chamber cooling device for supersonic flame spraying according to claim 4, characterized in that: A disc (18) is fixedly connected to one side of the sealing block (17), a filter plate (19) is fixedly connected inside the disc (18), and two short rods (20) are fixedly connected to the surface of the disc (18).

6. The high-pressure combustion chamber cooling device for supersonic flame spraying according to claim 1, characterized in that: An observation port is provided on one side of the water tank (2), and a water inlet is provided on one side of the top of the water tank (2). A sealing cap is threaded onto the surface of the water inlet. A control panel is fixedly connected to the top of one side of the surface of the water tank (2), and the control panel is electrically connected to the water supply pump (7) and the drive motor (13) respectively.

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