Automatic cleaning device for combustion chamber

Abstract

The invention belongs to the technical field of solid engine propellant burning rate testing, and particularly relates to an automatic cleaning device for a combustion chamber. The invention provides an automatic cleaning device for a combustion chamber, which comprises a linear slide rail for the horizontal movement of the automatic cleaning device; the cleaning movement sliding rail is arranged in the direction perpendicular to the linear sliding rail; the cleaning motion control module is connected to the cleaning motion sliding rail in a sliding manner; the tee joint is connected with the manual ball valve, the first water pipe and the second water pipe; the first anti-explosion electromagnetic valve and the second anti-explosion electromagnetic valve are arranged above the water pipes to control on-off of high-pressure water vapor, and the other sides of the first water pipe and the second water pipe are connected with the first cleaning spray head and the second cleaning spray head respectively. According to the automatic cleaning device for the combustion chamber, one-button type automatic cleaning can be achieved, the manual operation time is greatly shortened, and the testing efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of solid engine propellant burning rate testing, and in particular relates to an automatic cleaning device for a combustion chamber. Background Art

[0002] In recent years, with the rapid development of my country's national defense and aerospace technology, higher requirements have been put forward for the research and production of solid rocket propellant formulas. The energy of solid propellant determines the take-off, endurance and combat capability of solid rocket engines. After the energy of solid propellant is determined, to achieve the design goal of the engine, it is controlled by the energy release rate of the engine, which depends on the combustion rate of solid propellant and the charging method. Therefore, the combustion performance of solid propellant is an important performance parameter required by weapons. The combustion process can release energy, affect the injection speed of combustion products, and determine the injection quality. The two effects together directly affect the thrust of the engine and play a decisive role in the main performance of the engine.

[0003] In the propellant burning rate test technology, the target line method burning rate measurement method is a widely used measurement method. Its characteristic is that the solid propellant can burn stably in the air to obtain test data. However, with the continuous development of solid propellants, its composition has become more complex, which leads to a large amount of high-temperature burning residues and viscous substances remaining after the propellant is burned, resulting in a dirty and messy test environment during the entire propellant burning rate test. At the same time, if these residues are not cleaned up in time, on the one hand, they will cause certain damage to the burning rate test instruments and equipment, and ultimately lead to slow test progress and low efficiency. On the other hand, it will also affect the burning rate test results, affect the test accuracy, and cause unstable and inaccurate data.

[0004] In response to the above technical problems, the current solution is to wipe the test frame with alcohol and clean the combustion chamber with a large amount of water after each test. This process is a purely manual process with cumbersome operations, low work efficiency, and average cleaning effect. Summary of the invention

[0005] The present invention provides an automatic cleaning device for the combustion chamber. The cleaning function is introduced during the target line burning rate test. After the propellant is burned, the automatic cleaning device moves parallel to the top of the combustion chamber through the action of the electromagnetic valve to flush with high-pressure water vapor. At the same time, the use of the cleaning device can better clean the residues produced by combustion and minimize the impact on subsequent tests, further improving the test accuracy and test efficiency.

[0006] In order to achieve the above object, the present invention solves the above technical problems through the following technical solutions:

[0007] A combustion chamber automatic cleaning device, comprising:

[0008] Linear guide rail 1, used for horizontal movement of the automatic cleaning device;

[0009] The cleaning motion slide rail 2 is arranged perpendicular to the linear slide rail 1;

[0010] A cleaning motion control module 3 is slidably connected to the cleaning motion slide rail 2;

[0011] The tee and the manual ball valve 4 are connected to the first water pipe 5 and the second water pipe 6;

[0012] The first explosion-proof solenoid valve 7 and the second explosion-proof solenoid valve 8 are placed above the water pipe to control the switch of the high-pressure water vapor. The other sides of the first water pipe 5 and the second water pipe 6 are connected to the first cleaning nozzle 9 and the second cleaning nozzle 10 respectively.

[0013] It also includes a base mounting plate 11, and the linear slide rail 1 is fixed on the base mounting plate 11, and one end is connected to the motion motor.

[0014] It also includes a cleaning motion base 12 , and the cleaning motion slide rail 2 is fixed on the cleaning motion base 12 .

[0015] It also includes a three-way and manual ball valve fixing plate 13 , and the three-way and manual ball valve 4 are fixed to the three-way and manual ball valve fixing plate 13 .

[0016] The three-way and manual ball valve fixing plate 13 are fixedly connected to the base mounting plate 11 at a right angle of 90 degrees through angle steel.

[0017] The cleaning motion base 12 is slidably connected to the linear slide rail 1 and moves horizontally on the linear slide rail 1 .

[0018] The cleaning motion control module 3 moves horizontally on the cleaning motion slide rail 2 , and the moving direction is perpendicular to the moving direction of the cleaning motion base 12 .

[0019] The first explosion-proof solenoid valve 7 and the second explosion-proof solenoid valve 8 are fixedly connected to the cleaning motion control module 3 and are used to transport high-pressure water vapor to the first cleaning nozzle 9 and the second cleaning nozzle 10 through the first water pipe 5 and the second water pipe 6.

[0020] The first cleaning nozzle 9 and the second cleaning nozzle 10 are arranged perpendicular to each other.

[0021] The three-way connection and the three-way connection in the manual ball valve 4 are in a positive Y shape, and are used to divert the high-pressure water vapor to the first water pipe 5 and the second water pipe 6. The ball valve is located at the intersection of the three-way connection fork, and is used to control the supply of high-pressure water vapor.

[0022] Based on the implementation of the above technical solution, the present invention can achieve the following technical effects:

[0023] 1. The present invention provides an automatic cleaning device for a combustion chamber, which ensures that the cleaning nozzle can accurately move to the designated cleaning position by setting a linear slide rail and a cleaning motion slide rail, and returns to the initial position after the cleaning is completed.

[0024] 2. The present invention provides an automatic cleaning device for a combustion chamber, wherein the first cleaning nozzle and the second cleaning nozzle are arranged perpendicular to each other, the first cleaning nozzle is used to clean the residue on the top cover of the combustion chamber, and the second cleaning nozzle is used to clean the residue inside the combustion chamber, thereby ensuring the cleaning effect of the combustion chamber.

[0025] 3. The present invention provides an automatic combustion chamber cleaning device, which is provided with a first explosion-proof solenoid valve and a second explosion-proof solenoid valve, which are used to control the water pressure and flow rate of high-pressure water vapor delivered to the first cleaning nozzle and the second cleaning nozzle through the first water pipe and the second water pipe, so as to ensure the cleaning effect and efficiency of the combustion chamber.

[0026] 4. The automatic cleaning device for the combustion chamber provided by the present invention can realize one-button automatic cleaning, greatly reducing manual operation time and improving test efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 It is a structural schematic diagram of the combustion chamber automatic cleaning device provided by the present invention;

[0029] Figure 2 It is a schematic diagram of the structure of a three-way and manual ball valve provided by the present invention;

[0030] Figure 3 It is a schematic diagram of the working status of the cleaning nozzle and the combustion chamber of the cleaning device provided by the present invention.

[0031] Reference numerals

[0032] 1-linear slide rail; 2-cleaning motion slide rail; 3-cleaning motion control module; 4-tee and manual ball valve; 5-first water pipe; 6-second water pipe; 7-first explosion-proof solenoid valve; 8-first explosion-proof solenoid valve; 9-first cleaning nozzle; 10-second cleaning nozzle; 11-base mounting plate; 12-cleaning motion base; 13-tee and manual ball valve fixing plate. DETAILED DESCRIPTION

[0033] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0034] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limitations on the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0035] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0036] In the embodiments of the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0037] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0038] Combine the following Figure 1-Figure 3 The automatic cleaning device for the combustion chamber provided by the present invention is introduced in detail.

[0039] Combination Figure 1 As shown, in an embodiment of the present invention, the combustion chamber automatic cleaning device comprises:

[0040] Linear slide rail 1, cleaning motion slide rail 2, cleaning motion control module 3, tee and manual ball valve 4, first water pipe 5, second water pipe 6, first explosion-proof solenoid valve 7, second explosion-proof solenoid valve 8, first cleaning nozzle 9, second cleaning nozzle 10, base mounting plate 11, cleaning motion base 12 and manual ball valve fixing plate 13.

[0041] Furthermore, the linear guide rail 1 is fixedly mounted on the base mounting plate 11, and one end is connected to a motion motor, and the motion motor provides power for the entire cleaning device to move forward and backward and left and right.

[0042] Furthermore, the linear guide rail 1 is used for the horizontal movement of the automatic cleaning device.

[0043] Furthermore, the cleaning motion slide rail 2 is fixed on the cleaning motion base 12 .

[0044] Furthermore, the cleaning motion base 12 is slidably connected to the linear slide rail 1 and moves horizontally on the linear slide rail 1 .

[0045] Furthermore, the cleaning motion control module 3 is slidably connected to the cleaning motion slide rail 2 .

[0046] Furthermore, the cleaning motion control module 3 moves horizontally on the cleaning motion slide rail 2 , and the movement direction is perpendicular to the movement direction of the cleaning motion base 12 .

[0047] Furthermore, the movement direction of the cleaning motion base 12 is perpendicular to the movement direction of the cleaning motion module 3, which can ensure that the first cleaning nozzle 9 and the second cleaning nozzle 10 can move to various positions of the combustion chamber.

[0048] Furthermore, the first explosion-proof solenoid valve 7 and the second explosion-proof solenoid valve 8 are fixedly connected to the cleaning motion control module 3 , and are used to deliver high-pressure water gas to the first cleaning nozzle 9 and the second cleaning nozzle 10 .

[0049] Furthermore, the first cleaning nozzle 9 and the second cleaning nozzle 10 are arranged perpendicular to each other.

[0050] Combination Figure 2 As shown, the three-way and manual ball valve 4 is fixed to the three-way and manual ball valve fixing plate 13.

[0051] Furthermore, the three-way and manual ball valve fixing plate 13 are fixedly connected to the base mounting plate 11 at a right angle of 90 degrees through angle steel.

[0052] Furthermore, the three-way connection is connected to the manual ball valve 4 , the first water pipe 5 and the second water pipe 6 .

[0053] Furthermore, the tee and the manual ball valve 4 are in a positive Y shape, which is used to divert the high-pressure water vapor to the first water pipe 5 and the second water pipe 6. The ball valve is located at the intersection of the tee bifurcation and is used to control the supply of high-pressure water vapor.

[0054] The present invention provides a combustion chamber cleaning device for a target line method burning rate test under ultra-high pressure. In actual application, automatic cleaning can be achieved through a pneumatic device. At the same time, the use of the device can better clean the residues produced by combustion and minimize the impact on subsequent tests, thereby further improving the test accuracy and test efficiency.

[0055] Example

[0056] After the propellant sample is burned, the high-pressure water vapor is connected to the first water pipe 5 and the second water pipe 6 through the tee and the manual ball valve 4 in sequence. The tee and the tee in the manual ball valve 4 are in a positive Y shape, and the high-pressure water vapor is diverted to the first water pipe 5 and the second water pipe 6. The ball valve is located at the intersection of the tee bifurcation, which is used to control the supply of high-pressure water vapor to the cleaning device. The water pipe is made of high-temperature resistant (≤220℃) hose material. The first water pipe 5 and the second water pipe 6 are connected to the first explosion-proof solenoid valve 7 and the second explosion-proof solenoid valve 8. The maximum pressure of the first explosion-proof solenoid valve 7 and the second explosion-proof solenoid valve 8 is 0.05-2MPa, and the maximum operating temperature is 250 degrees, which is used to control the output of high-pressure water vapor. The first water pipe 5 and the second water pipe 6 are respectively connected to the first cleaning nozzle 9 and the second cleaning nozzle 10 arranged perpendicular to each other, and the two nozzles are 304 stainless steel. That is, high-pressure water vapor is delivered to the first cleaning nozzle 9 and the second cleaning nozzle 10. The first cleaning nozzle 9 is used to clean the residues on the top cover of the combustion chamber, and the second cleaning nozzle 10 is used to clean the residues inside the combustion chamber. After cleaning, the cleaning nozzle returns to the initial position through two slide rails to start the next set of tests.

[0057] The first explosion-proof solenoid valve 7 and the second explosion-proof solenoid valve 8 are fixed on the cleaning motion control module 3, and the cleaning motion control module 3 moves horizontally and linearly on the cleaning motion slide rail 2 with a length of 2445 mm, and the cleaning motion slide rail 2 is fixed on the cleaning motion base 12. The cleaning motion base 12 can move horizontally and linearly forward and backward on the linear slide rail 1 with a length of 583 mm, and the linear slide rail 1 is fixed on the base mounting plate 11. The linear slide rail 1 is also equipped with a motion motor, which is a Delta servo 400W motor, which provides power for the entire cleaning device to move forward, backward, left and right.

[0058] The combustion chamber automatic cleaning device provided by the present invention is characterized in that high-pressure water vapor is supplied through a booster pump and safety is achieved through a manual ball valve to prevent damage to the instrument caused by misoperation. Through remote control and one-button automatic operation, the cleaning effect is achieved by setting the cleaning time in the control room; all configured gas circuits and circuits are equipped with emergency disposal safety measures, and they can automatically stop running when the maximum setting requirements are exceeded; all objects used are explosion-proof grade.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A combustion chamber automatic cleaning device, characterized in that: Include: A linear guide rail (1) for horizontal movement of the automatic cleaning device; A cleaning motion slide rail (2) is arranged perpendicular to the linear slide rail (1); A cleaning motion control module (3) is slidably connected to the cleaning motion slide rail (2); The three-way valve and the manual ball valve (4) are connected to the first water pipe (5) and the second water pipe (6); The first explosion-proof solenoid valve (7) and the second explosion-proof solenoid valve (8) are placed above the water pipe to control the switch of the high-pressure water vapor. The other sides of the first water pipe (5) and the second water pipe (6) are respectively connected to the first cleaning nozzle (9) and the second cleaning nozzle (10).

2. The automatic combustion chamber cleaning device according to claim 1, characterized in that: It also includes a base mounting plate (11), the linear slide rail (1) is fixed on the base mounting plate (11), and one end is connected to the motion motor.

3. The automatic combustion chamber cleaning device according to claim 2, characterized in that: It also comprises a cleaning motion base (12), and the cleaning motion slide rail (2) is fixed on the cleaning motion base (12).

4. The automatic combustion chamber cleaning device according to claim 3, characterized in that: It also comprises a three-way and manual ball valve fixing plate (13), and the three-way and manual ball valve (4) are fixed to the three-way and manual ball valve fixing plate (13).

5. The automatic combustion chamber cleaning device according to claim 4, characterized in that: The three-way connection and the manual ball valve fixing plate (13) are fixedly connected to the base mounting plate (11) at a right angle of 90 degrees via angle steel.

6. The automatic combustion chamber cleaning device according to claim 5, characterized in that: The cleaning motion base (12) is slidably connected to the linear slide rail (1) and moves horizontally on the linear slide rail (1).

7. The automatic combustion chamber cleaning device according to claim 6, characterized in that: The cleaning motion control module (3) moves horizontally on the cleaning motion slide rail (2), and the movement direction is perpendicular to the movement direction of the cleaning motion base (12).

8. The automatic combustion chamber cleaning device according to claim 7, characterized in that: The first explosion-proof solenoid valve (7) and the second explosion-proof solenoid valve (8) are fixedly connected to the cleaning motion control module (3) and are used to control the high-pressure water vapor to be delivered to the first cleaning nozzle (9) and the second cleaning nozzle (10) through the first water pipe (5) and the second water pipe (6).

9. The automatic combustion chamber cleaning device according to claim 8, characterized in that: The first cleaning nozzle (9) and the second cleaning nozzle (10) are arranged perpendicular to each other.

10. The automatic combustion chamber cleaning device according to claim 9, characterized in that: The three-way connection and the three-way connection in the manual ball valve (4) are in a positive Y shape and are used to divert high-pressure water vapor to the first water pipe (5) and the second water pipe (6). The ball valve is located at the intersection of the three-way connection and is used to control the supply of high-pressure water vapor.

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