Air tightness detection device for cylinder cover of generator set

Abstract

The invention relates to the technical field of cylinder cover detection, and discloses an air tightness detection device for a generator set cylinder cover, which comprises a mounting plate and a generator cylinder cover placed on the mounting plate, the generator cylinder cover is provided with a piston cylinder group, and a clamping sealing assembly is arranged between the mounting plate and the generator cylinder cover. And a piston group for changing the air pressure value between the mounting plate and the generator cylinder cover is movably arranged in the piston cylinder group. As the number of the one-way turnover plates in the horizontal state is increased, the length of one-way turnover assemblies used for supporting the first piston, the second piston and the third piston is longer, at the moment, the lifting and staying time of the first piston, the second piston and the third piston is longer along with sliding of the one-way turnover assemblies, and in other words, by adjusting the length of the one-way turnover assemblies, the lifting and staying time of the first piston, the second piston and the third piston is longer. The lifting and staying duration of the first piston, the second piston and the third piston can be adjusted by adjusting the lifting and staying duration of the first piston, the second piston and the third piston, and then the influence of the negative pressure maintaining duration on the air tightness of the generator air cylinder cover can be better detected.

Description

Technical Field

[0001] The present invention relates to the technical field of cylinder head detection, and particularly to an airtightness detection device for a cylinder head of a generator set. Background Art

[0002] In an engine, the cylinder head is the most important component for forming the combustion chamber, closing the lubrication and crankcase ventilation systems. During use, the movement of the cylinder piston in the engine often causes instantaneous changes in the internal air pressure of the cylinder head, that is, due to the positive and negative air pressures during the compression and extraction of the gas in the engine. Therefore, during the use of the generator set, it is necessary to detect the airtightness problems generated during such movement processes: First, during the operation of the engine, the piston in the cylinder head constantly moves, which will cause the internal air pressure of the cylinder head in the engine to change extremely rapidly, that is, the lifting frequency of the piston causes the air pressure to change. At this time, it is necessary to check whether the increase in the lifting frequency of the piston causes cracks and deformations on the side wall of the cylinder head cover, which may lead to poor airtightness. Secondly, the duration of maintaining the positive and negative air pressure brought by the movement of the piston in the cylinder head will also have a certain impact on the airtightness of the cylinder head in the engine, that is, the longer the positive and negative air pressure states in the cylinder head of the engine are maintained, the longer the pressure duration on the side wall of the cylinder head cover will be, and it is very easy to cause damage when the side wall bears the pressure to the limit, ultimately resulting in insufficient airtightness of the cylinder head in the engine. Therefore, it is necessary to check whether the rate of change of the internal air pressure of the cylinder head during the movement of the engine and the duration of maintaining the positive and negative air pressure states affect the airtightness of the cylinder head. Therefore, we have designed an airtightness detection device for a cylinder head of a generator set. Summary of the Invention

[0003] The purpose of the present invention is to solve the problem of whether the rate of change of the internal air pressure of the cylinder head during the movement of the engine and the duration of maintaining the positive and negative air pressure states affect the airtightness of the cylinder head, and to propose an airtightness detection device for a cylinder head of a generator set.

[0004] In order to achieve the above purpose, the present invention adopts the following technical solutions: An airtightness detection device for a generator set cylinder head, comprising a mounting plate and a generator cylinder head placed on the mounting plate. The generator cylinder head has a piston cylinder group. A clamping and sealing assembly is provided between the mounting plate and the generator cylinder head. A piston group that changes the air pressure value between the mounting plate and the generator cylinder head is movable within the piston cylinder group. A slide rail is further provided on the mounting plate, and a one-way flipping assembly for pushing the piston group to lift and lower within the piston cylinder group is provided on the slide rail. The one-way flipping assembly includes one-way flipping plates. Multiple one-way flipping plates are arranged end to end. A support assembly for supporting the one-way flipping assembly is provided on the slide rail, and a stability maintenance assembly for adjusting the static state duration of the piston group is provided on the support assembly. A lifting assembly for changing the lifting amplitude of the piston group is provided on the side wall of the slide rail. An air pressure detector for detecting air pressure is further provided on the mounting plate.

[0005] Preferably, the piston cylinder group includes a first piston cylinder, a second piston cylinder, and a third piston cylinder. The piston group includes a first piston, a second piston, and a third piston. The first piston, the second piston, and the third piston are respectively movable within the first piston cylinder, the second piston cylinder, and the third piston cylinder. A connecting rod is provided at the bottom of the piston group, and a protruding arc block that abuts against the top of the slide rail is provided below the connecting rod. The protruding arc block and the slide rail are arranged crosswise. The connecting rod slides on the top of the protruding arc block through a second chute and a first slider.

[0006] Preferably, the support assembly slides on the slide rail through a first chute. The support assembly includes: A bottom plate and a second slider. The second slider lifts and lowers at the bottom of the bottom plate through a telescopic assembly. Third sliders are provided at both ends of the bottom plate; A first inclined plate and a second inclined plate. The first inclined plate and the second inclined plate are respectively slidably arranged on both sides of the bottom plate, and both the first inclined plate and the second inclined plate are inclined towards each other. A return spring is connected between the first inclined plate and the second inclined plate; Placement grooves are provided at the tops of the first inclined plate and the second inclined plate. The one-way flipping assembly is arranged in the placement grooves, and one end of the one-way flipping assembly is fixed to the first inclined plate.

[0007] Preferably, the slide rail is arranged within the mounting plate through a bracket. A driving motor is provided at the bottom of the slide rail. A sliding hole is provided at the bottom of the slide rail. The second slider slides on the slide rail through the sliding hole. A rotating lead screw is fixed to the output end of the driving motor, and the rotating lead screw is adapted to the second slider through a threaded hole.

[0008] Preferably, the one-way flipping assembly further includes: A protruding shaft platform, which is fixedly arranged on one side of the one-way flipping plate. A flipping groove is provided on the other side of the one-way flipping plate. The protruding shaft platform rotates within the flipping groove through a rotating shaft. Adjacent two one-way flipping plates are connected through the rotating flipping groove and the protruding shaft platform; The flipping groove is provided at the end of the one-way flipping plate, and the side of the flipping groove facing the slide rail is open.

[0009] Preferably, the stability - maintaining component includes: A lifting plate, which is arranged between the first inclined plate and the second inclined plate and abuts against the first inclined plate and the second inclined plate. An electric telescopic rod is provided on the bottom plate, and the output end of the electric telescopic rod is connected to the lifting plate.

[0010] Preferably, the lifting component includes: Side holes, which are arranged in multiple groups and symmetrically opened on the side wall of the slide rail. The bottom of the side holes is flush with the bottom of the first chute; Insert blocks, which are arranged in multiple groups and correspond to the side holes one by one. A plurality of insert blocks on the same side of the slide rail are connected by the same side pressing plate, and inclined surfaces are opened on both sides of the opposite two insert blocks facing one side.

[0011] Preferably, a detection box body is provided on the mounting plate in a penetrating manner, and a valve is provided in the detection box body. The air pressure detector is located on the side wall of the detection box body below the valve.

[0012] Preferably, the convex arc block is a smooth curved surface on the side facing the slide rail.

[0013] Preferably, the clamping and sealing component includes: Side frames, which are provided in multiple numbers and fixed at the bottom of the side wall of the mounting plate. A pressing frame for pressing the generator cylinder head by bolts is further provided on the side frames; An annular sealing ring, which is installed on the top of the mounting plate through a placement groove, and the generator cylinder head presses the mounting plate through the annular sealing ring.

[0014] The beneficial effects of the present invention are as follows: In the present invention, as the number of horizontal states of the one - way flipping plate increases, the length of the one - way flipping component for supporting the first piston, the second piston, and the third piston becomes longer. At this time, as the one - way flipping component slides, the duration of the first piston, the second piston, and the third piston staying in the lifted state becomes longer. That is, by adjusting the length of the one - way flipping component, the duration of the first piston, the second piston, and the third piston staying in the lifted state can be adjusted, and thus it is possible to better detect whether the negative - pressure maintaining duration affects the airtightness of the generator cylinder head.

[0015] In the present invention, the side pressing plate shovels up the bottom plate, thereby being able to lift the one - way flipping component, increasing the lifting height of the first piston, the second piston, and the third piston in the first piston cylinder, the second piston cylinder, and the third piston cylinder, and then controlling the air pressure in the generator cylinder head. Then the air pressure in the generator cylinder head will also decrease accordingly, and thus it is possible to detect whether the decrease in air pressure in the closed generator cylinder head will cause a rupture effect on the side wall of the generator cylinder head. Description of the Drawings

[0016] Figure 1Schematic structural diagram of an airtightness detection device for a cylinder head of a generator set proposed by the present invention; Figure 2 Internal structural diagram of an airtightness detection device for a cylinder head of a generator set proposed by the present invention; Figure 3 Main sectional view of an airtightness detection device for a cylinder head of a generator set proposed by the present invention; Figure 4 Schematic structural diagram of a slide rail assembly in an airtightness detection device for a cylinder head of a generator set proposed by the present invention; Figure 5 For Figure 4 Enlarged structural view of part A in; Figure 6 Schematic structural diagram of a one-way flipping assembly in an airtightness detection device for a cylinder head of a generator set proposed by the present invention; Figure 7 Upper and lower isometric axonometric view of a slide rail assembly in an airtightness detection device for a cylinder head of a generator set proposed by the present invention; Figure 8 Isometric view of a slide rail assembly in an airtightness detection device for a cylinder head of a generator set proposed by the present invention; Figure 9 Partial explosion view of a slide rail assembly in an airtightness detection device for a cylinder head of a generator set proposed by the present invention.

[0017] In the figure: 1. mounting plate; 2. annular sealing ring; 3. side frame; 4. pressing frame; 5. bolt; 6. generator cylinder head; 7. piston cylinder group; 71. first piston cylinder; 72. second piston cylinder; 73. third piston cylinder; 8. piston group; 81. first piston; 82. second piston; 83. third piston; 9. first chute; 10. slide rail; 11. protruding arc block; 12. second chute; 13. first slider; 14. connecting rod; 15. detection box body; 16. air pressure detector; 17. valve; 18. driving motor; 19. rotating lead screw; 20. second slider; 21. sliding hole; 22. first inclined plate; 23. second inclined plate; 24. third slider; 25. one-way flipping plate; 26. lifting plate; 27. bottom plate; 28. electric telescopic rod; 29. side hole; 30. insertion block; 31. side pressing plate; 32. protruding shaft platform; 33. rotating shaft. Specific implementation manners

[0018] Example 1, refer to Figures 1 - 9, An airtightness detection device for a generator set cylinder head, including a mounting plate 1 and a generator cylinder head 6 placed on the mounting plate 1. The generator cylinder head 6 has a piston cylinder group 7. A clamping and sealing assembly is provided between the mounting plate 1 and the generator cylinder head 6. The clamping and sealing assembly is used to clamp and fix the mounting plate 1 and the generator cylinder head 6 and ensure a sealed installation between the mounting plate 1 and the generator cylinder head 6.

[0019] A piston group 8 that changes the air pressure value between the mounting plate 1 and the generator cylinder head 6 is movable within the piston cylinder group 7. The piston cylinder group 7 includes a first piston cylinder 71, a second piston cylinder 72, and a third piston cylinder 73. Among them, the first piston cylinder 71, the second piston cylinder 72, and the third piston cylinder 73 are arranged at the top of the generator cylinder head 6. The piston group 8 includes a first piston 81, a second piston 82, and a third piston 83. The first piston 81, the second piston 82, and the third piston 83 are respectively movable within the first piston cylinder 71, the second piston cylinder 72, and the third piston cylinder 73. Therefore, the movement of the first piston 81, the second piston 82, and the third piston 83 can effectively simulate the air pressure change situation inside the generator cylinder head 6, and then the airtightness can be detected by changing the air pressure through the first piston 81, the second piston 82, and the third piston 83.

[0020] Therefore, it is necessary to adjust and control the movement of the first piston 81, the second piston 82, and the third piston 83. When the first piston 81, the second piston 82, or the third piston 83 rises, the air pressure in the space between the mounting plate 1 and the generator cylinder head 6 decreases; conversely, when the first piston 81, the second piston 82, or the third piston 83 descends, the air pressure in the space between the mounting plate 1 and the generator cylinder head 6 increases. In this way, the internal air pressure change of the generator cylinder head 6 can be simulated, and whether the side wall of the generator cylinder head 6 deforms or even cracks can be observed, and then whether the generator cylinder head 6 is damaged can be detected.

[0021] Refer to Figure 2 and Figure 3 In the state, a slide rail 10 is further provided on the mounting plate 1. A one-way flipping assembly for pushing the piston group 8 to rise and fall within the piston cylinder group 7 is provided on the slide rail 10. The setting of the one-way flipping assembly is used to jack up the piston group 8. At the same time, as the one-way flipping assembly slides on the slide rail 10, it can play a role in pushing and lifting the first piston 81, the second piston 82, and the third piston 83.

[0022] Refer to Figures 4 - 6As shown, the one-way flipping assembly includes a plurality of one-way flipping plates 25 that are arranged end to end. In this way, the end-to-end connected one-way flipping plates 25 will present a flipping effect. A clamping block is provided on one side of the one-way flipping plate 25, and this clamping block is used to block the flipping of the adjacent one-way flipping plate 25. Therefore, the plurality of end-to-end connected one-way flipping plates 25 can achieve flipping between 0° and 180°, thereby realizing the horizontal sliding and lifting of the first piston 81, the second piston 82, and the third piston 83.

[0023] When the one-way flipping plate 25 flips to the horizontal state as shown in Figure 6 , it can provide support for the first piston 81, the second piston 82, and the third piston 83 in the horizontal state. The more one-way flipping plates 25 are in the horizontal state, the longer the length of the one-way flipping assembly for supporting the first piston 81, the second piston 82, and the third piston 83. At this time, as the one-way flipping assembly slides, the duration of the first piston 81, the second piston 82, and the third piston 83 staying in the lifted state is longer. That is, by adjusting the length of the one-way flipping assembly, the duration of the first piston 81, the second piston 82, and the third piston 83 staying in the lifted state can be adjusted, and thus it is possible to better detect whether the negative pressure maintenance duration has an impact on the airtightness of the generator cylinder head 6.

[0024] A support assembly for supporting the one-way flipping assembly is provided on the slide rail 10, and this support assembly slides on the slide rail 10 through an external driving device. Therefore, the one-way flipping assembly slides through the support assembly, thereby changing the position of the one-way flipping assembly on the slide rail 10. The support assembly uses a bracket, and the bracket is pushed to slide under the action of an external driving device.

[0025] A stability-maintaining assembly for adjusting the stationary duration of the piston group 8 is provided on the support assembly. The stability-maintaining assembly is used to adjust the length of the one-way flipping assembly in the horizontal state, so the stationary duration of the piston group 8 can be controlled. A lifting assembly for changing the lifting amplitude of the piston group 8 is provided on the side wall of the slide rail 10. The lifting assembly is used to lift the support assembly, thereby increasing the lifting height of the first piston 81, the second piston 82, and the third piston 83 in the first piston cylinder 71, the second piston cylinder 72, and the third piston cylinder 73, and thus controlling the air pressure inside the generator cylinder head 6. As the first piston 81, the second piston 82, and the third piston 83 are lifted, the air pressure inside the generator cylinder head 6 will also decrease accordingly. Thus, it is possible to detect whether the decrease in air pressure in the sealed generator cylinder head 6 will cause a rupture effect on the side wall of the generator cylinder head 6. The lifting assembly uses a pneumatic cylinder to lift the support assembly. At the same time, under the action of an external driving device, the bracket is pushed to slide, thereby driving the lifted support assembly to move.

[0026] The mounting plate 1 is also provided with a pneumatic detector 16 for detecting air pressure. The mounting plate 1 is provided with a detection box body 15 arranged through it, and a valve 17 is arranged in the detection box body 15. The pneumatic detector 16 is located on the side wall of the detection box body 15 below the valve 17. During the detection process, the valve 17 needs to be closed to provide a sealed space for the space between the generator cylinder head 6 and the mounting plate 1. After the simulated air pressure change in the generator cylinder head 6 is completed through the movement of the first piston 81, the second piston 82, and the third piston 83, the first piston 81, the second piston 82, and the third piston 83 are in the lifted state to ensure that the air pressure in the generator cylinder head 6 is negative pressure. Then the valve 17 is opened, and the pneumatic detector 16 on the side wall of the detection box body 15 below the valve 17 will detect the air pressure value in the generator cylinder head 6. If the generator cylinder head 6 is deformed and damaged after the above air pressure change, then the air pressure value displayed on the pneumatic detector 16 is one standard atmospheric pressure. If the generator cylinder head 6 is not damaged, then the air pressure value displayed on the pneumatic detector 16 is negative. Thus, a conclusion can be obtained as to whether the generator cylinder head 6 is damaged.

[0027] The working principle of the present invention is as follows: First, the generator cylinder head 6 to be detected is placed on the mounting plate 1, and then the generator cylinder head 6 and the mounting plate 1 are hermetically clamped through the clamping and sealing assembly. Then the valve 17 is closed to provide a sealed condition for subsequent detection; Then the peripheral driving device is started to drive the one-way flipping assembly on the bracket to slide on the slide rail 10, so that the first piston 81, the second piston 82, and the third piston 83 can be pushed to lift. Therefore, when the first piston 81, the second piston 82, and the third piston 83 lift, they will lift and then descend in the first piston cylinder 71, the second piston cylinder 72, and the third piston cylinder 73. Therefore, the air pressure change in the generator cylinder head 6 can be simulated, that is, the air pressure first decreases and then returns to the original state, and whether the side wall of the generator cylinder head 6 is deformed or even cracked is observed, so as to detect whether the generator cylinder head 6 is damaged; Regarding the influence of air pressure magnitude on the generator cylinder head 6: The lifting assembly needs to be started to lift the support assembly, so as to be able to increase the lifting height of the first piston 81, the second piston 82, and the third piston 83 in the first piston cylinder 71, the second piston cylinder 72, and the third piston cylinder 73, and then control the air pressure in the generator cylinder head 6. Then the air pressure in the generator cylinder head 6 will also decrease accordingly, so as to be able to detect whether the decrease in air pressure in the sealed generator cylinder head 6 will cause a rupture effect on the side wall of the generator cylinder head 6; Regarding the influence of the low air pressure maintenance duration on the generator cylinder head 6: The stability maintenance assembly needs to be started. The stability maintenance assembly is used to adjust the horizontal state length of the support one-way flipping assembly, so as to be able to control the stationary state duration of the piston group 8, and then be able to better detect whether the negative pressure maintenance duration has an impact on the airtightness of the generator cylinder head 6.

[0028] Embodiment 2. A connecting rod 14 is provided at the bottom of the piston group 8, and a protruding arc block 11 that abuts against the top of the slide rail 10 is provided below the connecting rod 14. The side of the protruding arc block 11 facing the slide rail 10 is a smooth curved surface, and the protruding arc block 11 and the slide rail 10 are arranged in a cross shape. Therefore, the support assembly sliding on the slide rail 10 will lift the protruding arc block 11, and then the protruding arc block 11 will lift the piston group 8 through the connecting rod 14. Since the connecting rod 14 slides on the top of the protruding arc block 11 through the second chute 12 and the first slider 13, it can adapt to the piston barrel groups 7 at different positions on the generator cylinder head 6.

[0029] The support assembly includes a bottom plate 27 and a second slider 20. The second slider 20 is lifted and lowered at the bottom of the bottom plate 27 through a telescopic assembly. Third sliders 24 are provided at both ends of the bottom plate 27. Therefore, the bottom plate 27 slides on the first chute 9 of the slide rail 10 through the third sliders 24.

[0030] The support assembly slides on the slide rail 10 through the first chute 9. The slide rail 10 is arranged on the mounting plate 1 through a bracket. A driving motor 18 is provided at the bottom of the slide rail 10. A sliding hole 21 is opened at the bottom of the slide rail 10. The second slider 20 slides on the slide rail 10 through the sliding hole 21. The output end of the driving motor 18 is fixed with a rotating lead screw 19, and the rotating lead screw 19 is adapted to the second slider 20 through a threaded hole. Therefore, after the driving motor 18 is started, it will drive the second slider 20 to slide in the sliding hole 21 through the rotating lead screw 19, and then be able to drive the bottom plate 27 to slide on the first chute 9.

[0031] Embodiment 3. Regarding the influence of the low-pressure maintenance duration on the generator cylinder head 6, the following structural settings are also provided: The support assembly further includes a first inclined plate 22 and a second inclined plate 23. The first inclined plate 22 and the second inclined plate 23 are respectively slidably arranged on both sides of the bottom plate 27, and both the first inclined plate 22 and the second inclined plate 23 are inclined towards each other. A return spring is connected between the first inclined plate 22 and the second inclined plate 23. In this way, when the first inclined plate 22 and the second inclined plate 23 are not pushed by external forces, the return spring can pull the first inclined plate 22 and the second inclined plate 23 closer, thereby completing the reset of the first inclined plate 22 and the second inclined plate 23.

[0032] The stability maintenance assembly includes a lifting plate 26. The lifting plate 26 is arranged between the first inclined plate 22 and the second inclined plate 23 and abuts against the first inclined plate 22 and the second inclined plate 23. An electric telescopic rod 28 is provided on the bottom plate 27, and the output end of the electric telescopic rod 28 is connected to the lifting plate 26. Therefore, after the electric telescopic rod 28 is started, the lifting plate 26 at the output end will push the first inclined plate 22 and the second inclined plate 23 on both sides to slide away from each other.

[0033] Refer to Figure 8 andFigure 6 State. Placement grooves are provided at the tops of the first inclined plate 22 and the second inclined plate 23. The one-way flipping assembly is arranged in the placement grooves. One end of the one-way flipping assembly is fixed to the first inclined plate 22. Thus, as the first inclined plate 22 and the second inclined plate 23 slide away from each other and separate, one end of the one-way flipping assembly is connected to the first inclined plate 22, and the other end slides in the placement groove at the top of the second inclined plate 23.

[0034] It should be noted that since the first inclined plate 22 and the second inclined plate 23 are slidably connected to the bottom plate 27, during the sliding separation process of the first inclined plate 22 and the second inclined plate 23, the distance between the first inclined plate 22 and the second inclined plate 23 will be enlarged, providing a length space for the horizontal support for the paving of the one-way flipping assembly.

[0035] Example 4, referring to Figures 4 - 6 State. The one-way flipping assembly further includes a protruding shaft platform 32. The protruding shaft platform 32 is fixedly arranged on one side of the one-way flipping plate 25. A flipping groove is provided on the other side of the one-way flipping plate 25. The protruding shaft platform 32 rotates in the flipping groove through a rotating shaft 33. Adjacent two one-way flipping plates 25 are connected through the rotating flipping groove and the protruding shaft platform 32. The flipping groove is provided at the end of the one-way flipping plate 25, and the side of the flipping groove facing the slide rail 10 is open. Therefore, as the distance between the first inclined plate 22 and the second inclined plate 23 is enlarged, the adjacent two one-way flipping plates 25 that were originally bent will be pushed to rotate and finally be located in the same plane. The rotation of the protruding shaft platform 32 in the flipping groove can play a role in limiting the flipping. At the same time, the flipping groove also provides a limiting support for the protruding shaft platform 32. At the same time, the longer the length of the one-way flipping assembly for supporting the first piston 81, the second piston 82, and the third piston 83, the longer the time that the first piston 81, the second piston 82, and the third piston 83 are lifted and stay at this time. That is, by adjusting the length of the one-way flipping assembly, the time that the first piston 81, the second piston 82, and the third piston 83 are lifted and stay can be adjusted, and thus the influence of the negative pressure maintenance time on the air tightness of the generator cylinder head 6 can be better detected.

[0036] Example 5, for the influence of the air pressure magnitude on the generator cylinder head 6, the following structural settings are also provided: The lifting assembly includes side holes 29. The side holes 29 are provided in multiple groups and symmetrically opened on the side walls of the slide rail 10. The bottoms of the side holes 29 are flush with the bottom of the first chute 9. The insertion blocks 30 are provided in multiple groups and correspond to the side holes 29 one by one. The multiple insertion blocks 30 on the same side of the slide rail 10 are connected by the same side pressing plate 31. Inclined surfaces are provided on the sides of the two opposite insertion blocks 30 facing each other. Therefore, under the action of the side pressing plate 31, the multiple insertion blocks 30 on both side walls of the slide rail 10 are brought closer to each other. The side pressing plate 31 moves towards the side wall of the slide rail 10 under the action of an external force, such as being driven by a hydraulic rod.

[0037] Therefore, the bottom plate 27 can be shoveled up, and then the one-way flipping assembly can be lifted, increasing the lifting height of the first piston 81, the second piston 82, and the third piston 83 in the first piston cylinder 71, the second piston cylinder 72, and the third piston cylinder 73. Furthermore, the air pressure in the generator cylinder head 6 can be controlled. Then, the air pressure in the generator cylinder head 6 will also decrease accordingly. Furthermore, it can be detected whether the decrease in air pressure will cause a rupture effect on the side wall of the generator cylinder head 6 in the sealed generator cylinder head 6.

[0038] The distance between two adjacent insertion blocks 30 is less than the length of the bottom plate 27. The bottom plate 27 telescopically slides with the second slider 20. In this way, under the action of the rotating lead screw 19, it can be ensured that the bottom plate 27 slides on the insertion blocks 30.

[0039] Embodiment 6: The clamping and sealing assembly includes side frames 3. A plurality of side frames 3 are provided and fixed to the bottom of the side wall of the mounting plate 1. The side frames 3 are also provided with a pressing frame 4 that presses the generator cylinder head 6 through bolts 5, thereby completing the fixed clamping of the generator cylinder head 6 and the mounting plate 1.

[0040] The clamping and sealing assembly further includes an annular sealing ring 2. The annular sealing ring 2 is installed on the top of the mounting plate 1 through an installation groove, and the generator cylinder head 6 presses the mounting plate 1 through the annular sealing ring 2, providing conditions for sealing between the generator cylinder head 6 and the mounting plate 1.

[0041] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. An airtightness detection device for a cylinder head of a generator set, comprising a mounting plate and a generator cylinder head placed on the mounting plate. The generator cylinder head is provided with a piston cylinder group, and is characterized in that, A clamping and sealing assembly is provided between the mounting plate and the generator cylinder head. A piston group that changes the air pressure value between the mounting plate and the generator cylinder head is movable within the piston cylinder group. The mounting plate is also provided with a slide rail, and a one-way flipping assembly for pushing the piston group to lift and lower within the piston cylinder group is arranged on the slide rail. The one-way flipping assembly includes one-way flipping plates, and multiple one-way flipping plates are arranged and connected end to end. A support assembly for supporting the one-way flipping assembly is arranged on the slide rail, and a stability-maintaining assembly for adjusting the stationary time length of the piston group is arranged on the support assembly. A lifting assembly for changing the lifting amplitude of the piston group is arranged on the side wall of the slide rail. The mounting plate is also provided with a pressure detector for detecting air pressure.

2. The airtightness detection device for the cylinder head of a generator set according to claim 1, wherein The piston cylinder group includes a first piston cylinder, a second piston cylinder, and a third piston cylinder. The piston group includes a first piston, a second piston, and a third piston. The first piston, the second piston, and the third piston are respectively movable within the first piston cylinder, the second piston cylinder, and the third piston cylinder. A connecting rod is provided at the bottom of the piston group, and a protruding arc block that abuts against the top of the slide rail is provided below the connecting rod. The protruding arc block and the slide rail are arranged in a cross manner. The connecting rod slides on the top of the protruding arc block through a second chute and a first slider.

3. The airtightness detection device for the cylinder head of a generator set according to claim 1, wherein, The support assembly slides on the slide rail through a first chute. The support assembly includes: A bottom plate and a second slider. The second slider is lifted and lowered at the bottom of the bottom plate through a telescopic assembly. Third sliders are provided at both ends of the bottom plate; A first inclined plate and a second inclined plate. The first inclined plate and the second inclined plate are respectively slidably arranged on both sides of the bottom plate, and both the first inclined plate and the second inclined plate are inclined towards each other. A return spring is connected between the first inclined plate and the second inclined plate; Placement grooves are respectively formed at the tops of the first inclined plate and the second inclined plate. The one-way flipping assembly is arranged in the placement grooves, and one end of the one-way flipping assembly is fixed to the first inclined plate.

4. An airtightness detection device for a cylinder head of a generator set according to claim 3, characterized in that, The slide rail is arranged within the mounting plate through a bracket. A driving motor is arranged at the bottom of the slide rail. A sliding hole is formed at the bottom of the slide rail. The second slider slides on the slide rail through the sliding hole. A rotating lead screw is fixed to the output end of the driving motor, and the rotating lead screw is adapted to the second slider through a threaded hole.

5. An airtightness detection device for a cylinder head of a generator set according to claim 1, characterized in that, The one-way flipping assembly further includes: A protruding shaft platform. The protruding shaft platform is fixedly arranged on one side of the one-way flipping plate. A flipping groove is formed on the other side of the one-way flipping plate. The protruding shaft platform rotates within the flipping groove through a rotating shaft. Adjacent two one-way flipping plates are connected through the rotating flipping groove and the protruding shaft platform; The flipping groove is formed at the end of the one-way flipping plate, and the flipping groove is open towards the side of the slide rail.

6. The airtightness detection device for the cylinder head of a generator set according to claim 3, characterized in that, The stability-maintaining assembly includes: A lifting plate. The lifting plate is arranged between the first inclined plate and the second inclined plate and abuts against the first inclined plate and the second inclined plate. An electric telescopic rod is arranged on the bottom plate, and the output end of the electric telescopic rod is connected to the lifting plate.

7. An airtightness detection device for a cylinder head of a generator set according to claim 3, characterized in that, The lifting assembly includes: Side holes. Multiple groups of side holes are provided and symmetrically opened on the side wall of the slide rail. The bottom of the side holes is flush with the bottom of the first chute; Insert blocks. Multiple groups of insert blocks are provided and correspond to the side holes one by one. Multiple insert blocks located on the same side of the slide rail are connected through the same side pressing plate. Inclined surfaces are respectively formed on the opposite two insert blocks facing one side.

8. An airtightness detection device for a cylinder head of a generator set according to claim 1, characterized in that, A detection box body is arranged through the mounting plate, and a valve is arranged within the detection box body. The pressure detector is located on the side wall of the detection box body below the valve.

9. An airtightness detection device for a cylinder head of a generator set according to claim 2, characterized in that, The side of the protruding arc block facing the slide rail is a smooth curved surface.

10. The airtightness detection device for a cylinder head of a generator set according to claim 1, characterized in that, The clamping and sealing assembly includes: Side frames, multiple side frames are provided and fixed to the bottom of the side wall of the mounting plate. A pressing frame for pressing the generator cylinder head by bolts is also provided on the side frames; An annular sealing ring, the annular sealing ring is installed on the top of the mounting plate through a placement groove, and the generator cylinder head presses the mounting plate through the annular sealing ring.

Images