Engine combustion chamber airtightness detection device

Abstract

The utility model provides an engine combustion chamber airtightness detection device, which relates to the technical field of engine detection and comprises an L-shaped plate, a moving plate is arranged in the L-shaped plate, a sliding groove is formed in the inner wall of the top of the L-shaped plate and close to the center, and a screw rod is rotatably connected to the inner wall of one end of the sliding groove through a bearing. The surface of the screw rod is sleeved with and in threaded connection with a moving part, and the top of the moving part is fixedly connected with the bottom of the moving plate. The two ends of an engine are placed on the lifting plate, the lifting plate is pushed to rise through the electric push rod, the engine can be aligned with the round hole through lifting of the lifting plate, and at the moment, the screw rotates to drive the moving plate to move through the moving piece so as to extrude and fix the two ends of the engine. The device can achieve the effect of enabling the sealing ring gaskets to seal the two ends of the engine, can improve the detection accuracy, can achieve the effect of clamping and sealing detection of engines with different lengths and different diameters, and can achieve the effect of improving the practicability of the device.

Description

Technical Field

[0001] The utility model relates to the technical field of engine detection, in particular to an airtightness detection device for an engine combustion chamber. Background Technique

[0002] A combustion chamber is a device in which fuel or propellant burns to generate high-temperature gas, and it is a combustion device made of high-temperature resistant alloy materials. The fuel burns in this chamber. It is an important component of a gas turbine engine, a ramjet engine, and a rocket engine. For a piston engine, the combustion chamber refers to the space between the top of the piston and the cylinder head after the piston reaches the top dead center, and the internal combustion chamber of the engine needs to be subjected to airtightness detection after production.

[0003] The existing airtightness detection devices are usually not applicable to engine shells with different diameters and lengths for detection, and the practicability is relatively low. Therefore, an airtightness detection device for an engine combustion chamber is needed to solve the above problems. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the problem that the existing airtightness detection devices are usually not applicable to engine shells with different diameters and lengths for detection, and the practicability is relatively low, and to propose an airtightness detection device for an engine combustion chamber.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme: an airtightness detection device for an engine combustion chamber, including an L-shaped plate, a moving plate is arranged inside the L-shaped plate, a chute is opened on the inner wall of the top of the L-shaped plate and near the center, one end inner wall of the chute is rotationally connected with a screw rod through a bearing, a moving part is sleeved and threadedly connected on the surface of the screw rod, the top of the moving part is fixedly connected with the bottom of the moving plate, circular grooves are opened on one side inner wall of the L-shaped plate and the surface of the moving plate, circular holes are opened at the centers of the circular grooves, sealing ring gaskets are fixedly connected by embedding inside the circular grooves, a fixed cover is fixedly communicated at the circular hole on one side wall of the L-shaped plate, a pressure gauge is installed on the top of the fixed cover, a connecting pipe is fixedly communicated at the circular hole on one side wall of the moving plate, a magnetic valve is installed on the surface of the connecting pipe, fixing plates are fixedly connected on one side inner wall of the L-shaped plate and the surface of the moving plate, electric push rods are symmetrically embedded and fixedly connected on the tops of the fixing plates, and a lifting plate is fixedly connected to the output end of the electric push rod.

[0006] Preferably, support legs are fixedly connected to the bottom of the L-shaped plate and near the four corners, and the shapes of the support legs are all trapezoidal.

[0007] Preferably, limiting grooves are formed on both inner walls of the bottom of the L-shaped plate and on both sides of the sliding groove. Slide bars are fixedly connected inside the limiting grooves. Sliding blocks are sleeved on the surfaces of the slide bars and are slidably connected therewith. The tops of the sliding blocks are fixedly connected to the bottom of the moving plate.

[0008] Preferably, the other end of the screw rod penetrates through the inner wall of the other end of the sliding groove and is rotatably connected thereto through a bearing. One end of the L-shaped plate is fixedly connected with a driving motor, and the output end of the driving motor is fixedly connected with one end of the screw rod.

[0009] Preferably, the other ends of the connecting pipes are fixedly communicated with air inlet pipes.

[0010] Preferably, a control panel is fixedly installed on one side wall of the L-shaped plate. The control panel is electrically connected to the magnetic valve, the driving motor and the electric push rod.

[0011] Compared with the prior art, the advantages and positive effects of the present utility model are as follows.

[0012] In the present utility model, by placing both ends of the engine on the lifting plate, at this time, the lifting plate is pushed to rise by the electric push rod. The lifting of the lifting plate can align the engine with the round hole. At this time, when the screw rod rotates, the moving member drives the moving plate to move to squeeze and fix both ends of the engine, which can achieve the effect of sealing both ends of the engine with the sealing ring gasket, improve the detection accuracy, and at the same time can perform clamping and sealing detection on engines with different lengths and different diameters, so as to improve the practicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a right view of the overall structure of a combustion chamber airtightness detection device for an engine proposed by the present utility model;

[0014] Figure 2 is a left view of the overall structure of a combustion chamber airtightness detection device for an engine proposed by the present utility model;

[0015] Figure 3 is a cross-sectional view of the overall structure of a combustion chamber airtightness detection device for an engine proposed by the present utility model;

[0016] Figure 4 is a perspective view of a partial structure of a combustion chamber airtightness detection device for an engine proposed by the present utility model.

[0017] Legend: 1. L-shaped plate; 2. Support leg; 3. Moving plate; 4. Slide groove; 5. Screw; 6. Moving part; 7. Limit groove; 8. Slide bar; 9. Slide block; 10. Circular groove; 11. Sealing ring gasket; 12. Circular hole; 13. Fixed cover; 14. Pressure gauge; 15. Connecting pipe; 16. Magnetic valve; 17. Inlet pipe; 18. Fixed plate; 19. Electric push rod; 20. Lifting plate; 21. Driving motor; 22. Control panel. Detailed implementation

[0018] In order to more clearly understand the above objects, features and advantages of the present invention, the present invention will be further described below with reference to the drawings and embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0019] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described herein. Therefore, the present invention is not limited by the limitations of the specific embodiments disclosed in the following specification.

[0020] Embodiment 1, as Figures 1-4 shown, the present invention provides an airtightness detection device for an engine combustion chamber, including an L-shaped plate 1. Inside the L-shaped plate 1, there is a moving plate 3. A slide groove 4 is opened in the inner wall of the top of the L-shaped plate 1 and near the center. One end inner wall of the slide groove 4 is rotationally connected to a screw 5 by a bearing. A moving part 6 is sleeved on the surface of the screw 5 and is threadedly connected thereto. The top of the moving part 6 is fixedly connected to the bottom of the moving plate 3. Circular grooves 10 are opened on one side inner wall of the L-shaped plate 1 and on the surface of the moving plate 3. Circular holes 12 are opened at the centers of the circular grooves 10. Sealing ring gaskets 11 are fixedly embedded inside the circular grooves 10. A fixed cover 13 is fixedly communicated with one side wall of the L-shaped plate 1 at the position of the circular hole 12. A pressure gauge 14 is installed on the top of the fixed cover 13. A connecting pipe 15 is fixedly communicated with one side wall of the moving plate 3 at the position of the circular hole 12. A magnetic valve 16 is installed on the surface of the connecting pipe 15. Fixed plates 18 are fixedly connected to one side inner wall of the L-shaped plate 1 and on the surface of the moving plate 3. Electric push rods 19 are symmetrically embedded and fixedly connected to the tops of the fixed plates 18. The output ends of the electric push rods 19 are fixedly connected to lifting plates 20.

[0021] The effect achieved by the entire Embodiment 1 is that there is a moving plate 3 inside the L-shaped plate 1. A chute 4 is opened on the inner wall of the top of the L-shaped plate 1 and near the center. One end inner wall of the chute 4 is rotationally connected to a screw rod 5 by a bearing. A moving member 6 is sleeved and threadedly connected to the surface of the screw rod 5. The top of the moving member 6 is fixedly connected to the bottom of the moving plate 3. It can make the rotation of the screw rod 5 drive the movement of the moving member 6. The movement of the moving member 6 can drive the movement of the moving plate 3. The movement of the moving plate 3 can clamp and fix the engine through the L-shaped plate 1. Circular grooves 10 are opened on one inner wall of the L-shaped plate 1 and the surface of the moving plate 3. Circular holes 12 are opened at the centers of the circular grooves 10. Sealing ring gaskets 11 are fixedly connected and embedded inside the circular grooves 10 respectively. It can seal both ends of the engine during the clamping process. A fixed cover 13 is fixedly communicated with one side wall of the L-shaped plate 1 and at the position of the circular hole 12. A pressure gauge 14 is installed on the top of the fixed cover 13. It can detect the internal pressure of the engine. A connecting pipe 15 is fixedly communicated with one side wall of the moving plate 3 and at the position of the circular hole 12. A magnetic valve 16 is installed on the surface of the connecting pipe 15. It can close and open the connecting pipe 15. Fixed plates 18 are fixedly connected to one inner wall of the L-shaped plate 1 and the surface of the moving plate 3 respectively. Electric push rods 19 are symmetrically embedded and fixedly connected to the tops of the fixed plates 18. The output ends of the electric push rods 19 are fixedly connected to a lifting plate 20. It can make the electric push rods 19 push the lifting plate 20 to lift and lower.

[0022] Embodiment 2 is as Figures 1-4 shown. Support legs 2 are fixedly connected to the bottom of the L-shaped plate 1 and near the four corners respectively. The shapes of the support legs 2 are all trapezoidal. Limit grooves 7 are opened on both sides of the chute 4 on the inner wall of the bottom of the L-shaped plate 1. Slide rods 8 are fixedly connected to the interiors of the limit grooves 7 respectively. Sliders 9 are sleeved and slidably connected to the surfaces of the slide rods 8. The tops of the sliders 9 are fixedly connected to the bottom of the moving plate 3. The other end of the screw rod 5 penetrates through the inner wall of the other end of the chute 4 and is rotationally connected to it by a bearing. A driving motor 21 is fixedly connected to one end of the L-shaped plate 1. The output end of the driving motor 21 is fixedly connected to one end of the screw rod 5. The other ends of the connecting pipes 15 are fixedly communicated with an air inlet pipe 17 respectively. A control panel 22 is fixedly installed on one side wall of the L-shaped plate 1. The control panel 22 is electrically connected to the magnetic valve 16, the driving motor 21 and the electric push rod 19.

[0023] The effects achieved by the entire Embodiment 2 are as follows: Support legs 2 are fixedly connected to the bottom of the L-shaped plate 1 near the four corners. The shapes of the support legs 2 are all trapezoidal, which can support the bottom of the L-shaped plate 1. Limit grooves 7 are provided on both sides of the sliding groove 4 on the inner wall of the bottom of the L-shaped plate 1. Slide rods 8 are fixedly connected to the inside of the limit grooves 7. Sliders 9 are sleeved and slidably connected to the surfaces of the slide rods 8. The tops of the sliders 9 are fixedly connected to the bottom of the moving plate 3, which can limit the bottom of the moving plate 3. The other end of the screw rod 5 penetrates through the inner wall of the other end of the sliding groove 4 and is rotatably connected to it by a bearing. A driving motor 21 is fixedly connected to one end of the L-shaped plate 1. The output end of the driving motor 21 is fixedly connected to one end of the screw rod 5, which can make the driving motor 21 drive the screw rod 5 to rotate. The other ends of the connecting pipes 15 are fixedly communicated with the air inlet pipes 17, which can intake air for the engine during the clamping process. A control panel 22 is fixedly installed on one side wall of the L-shaped plate 1. The control panel 22 is electrically connected to the solenoid valve 16, the driving motor 21, and the electric push rod 19, which can make the control panel 22 control the device.

[0024] Working principle: The control panel 22 controls the driving motor 21 to drive the screw rod 5 to rotate. The rotation of the screw rod 5 can drive the moving plate 3 to move through the moving member 6, and the distance between the fixing plates 18 can be adjusted to be suitable for the length of the engine to be detected. At this time, both ends of the engine are placed on the lifting plate 20. Then, the lifting plate 20 is pushed up by the electric push rod 19. The lifting and lowering of the lifting plate 20 can align both ends of the engine with the round holes 12. Then, the driving motor 21 is driven to drive the screw rod 5 to rotate again. The rotation of the screw rod 5 can drive the moving plate 3 to move. At this time, both ends of the engine can be squeezed and fixed by the L-shaped plate 1. At this time, the sealing ring gasket 11 will be closely attached to both ends of the engine. Then, air is intaken into the engine through the air inlet pipe 17. When the air intake reaches a certain level, the control panel 22 can control the solenoid valve 16 to close the connecting pipe 15. Then, the surface of the pressure gauge 14 can be used to determine whether the combustion chamber of the engine is sealed.

[0025] The wiring diagrams of the pressure gauge 14, the solenoid valve 16, the electric push rod 19, the driving motor 21, and the control panel 22 in the present utility model belong to the common knowledge in the art. Their working principles are already well-known technologies. Their models are selected according to actual use. Therefore, the control methods and wiring arrangements of the pressure gauge 14, the solenoid valve 16, the electric push rod 19, the driving motor 21, and the control panel 22 will not be explained in detail.

[0026] The above are only the preferred embodiments of the present utility model, and are not intended to limit the present utility model in other forms. Any person skilled in the relevant art may use the technical content disclosed above to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution content of the present utility model still fall within the protection scope of the technical solution of the present utility model.

Claims

1. An engine combustion chamber air tightness detection device, comprising an L-shaped plate (1), characterized in that: A movable plate (3) is provided inside the L-shaped plate (1), a slide groove (4) is provided on the top inner wall of the L-shaped plate (1) and near the center, a screw rod (5) is rotatably connected to the inner wall bearing at one end of the slide groove (4), a movable member (6) is sleeved on the surface of the screw rod (5) and threadedly connected, the top of the movable member (6) is fixedly connected to the bottom of the movable plate (3), a circular groove (10) is provided on the inner wall of one side of the L-shaped plate (1) and the surface of the movable plate (3), a circular hole (12) is provided at the center of the circular groove (10), and a sealing circular ring gasket (11) is embedded and fixedly connected inside the circular groove (10), A fixed cover (13) is fixedly connected to one side wall of the L-shaped plate (1) and located at the circular hole (12), and a pressure gauge (14) is installed on the top of the fixed cover (13). A connecting pipe (15) is fixedly connected to one side wall of the movable plate (3) and located at the circular hole (12), and a magnetic valve (16) is installed on the surface of the connecting pipe (15). A fixed plate (18) is fixedly connected to one side inner wall of the L-shaped plate (1) and the surface of the movable plate (3), and an electric push rod (19) is symmetrically embedded and fixedly connected to the top of the fixed plate (18), and the output end of the electric push rod (19) is fixedly connected to a lifting plate (20).

2. The engine combustion chamber air tightness detection device according to claim 1, characterized in that: Support legs (2) are fixedly connected to the bottom of the L-shaped plate (1) and near the four corners, and the shape of the support legs (2) is a trapezoid.

3. The engine combustion chamber air tightness detection device according to claim 1, characterized in that: The bottom inner wall of the L-shaped plate (1) and both sides of the slide groove (4) are provided with limiting grooves (7), the interior of the limiting grooves (7) is fixedly connected with a slide rod (8), the surface of the slide rod (8) is sleeved and slidably connected with a slider (9), and the top of the slider (9) is fixedly connected to the bottom of the movable plate (3).

4. The engine combustion chamber air tightness detection device according to claim 1, characterized in that: The other end of the screw rod (5) passes through the inner wall of the other end of the slide groove (4) and is rotatably connected to its bearing. One end of the L-shaped plate (1) is fixedly connected to a drive motor (21), and the output end of the drive motor (21) is fixedly connected to one end of the screw rod (5).

5. The engine combustion chamber air tightness detection device according to claim 1, characterized in that: The other end of the connecting pipe (15) is fixedly connected to an air intake pipe (17).

6. The engine combustion chamber air tightness detection device according to claim 4, characterized in that: A control panel (22) is fixedly mounted on one side wall of the L-shaped plate (1), and the control panel (22) is electrically connected to the magnetic valve (16), the drive motor (21) and the electric push rod (19).

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