A sealing joint device for indicator valve of medium speed diesel engine

Abstract

This invention relates to the field of diesel engines, and more particularly to a sealing joint device for a medium-speed diesel engine indicator valve. The sealing joint device includes a sealing joint and a combustion chamber. One end of the sealing joint is threadedly connected to an indicator valve assembly, and the other end is connected to a connecting rope. An indicator valve gasket is disposed between the outside of the combustion chamber cylinder head and the indicator valve assembly. The indicator valve assembly and the combustion chamber are fixedly connected by threads. A mounting plate is installed on one side of the indicator valve assembly, and a limiting tooth is installed on one side of the mounting plate. This invention, through the design of a complex sealing joint structure, including components such as a threaded protective cap, a plug shaft, and a tent ring, effectively prevents external dirt from entering the cylinder connection channel, ensuring the cleanliness of the measurement process, while simultaneously improving sealing performance, preventing gas leakage, and thus ensuring the accuracy of the measurement data.

Description

Technical Field

[0001] This invention relates to the field of diesel engines, and more particularly to a sealing joint device for a power indicator valve of a medium-speed diesel engine. Background Technology

[0002] During the operation of marine diesel engines, it is necessary to monitor the working status of each cylinder in real time. Among them, the compression pressure and maximum combustion pressure of each cylinder are important parameters for evaluating the proper operation of the diesel engine, and they need to be measured regularly during diesel engine testing. By measuring the compression pressure and maximum combustion pressure of each cylinder, it is possible to determine whether the multi-cylinder diesel engine is working evenly and to understand the working status of each cylinder, such as whether a certain cylinder is firing, whether the fuel injection advance angle is reasonable, and whether the fuel injection is too large or too small, etc. Due to the high combustion pressure and high gas temperature inside the cylinder, a system needs to be designed to connect the indicator gauge to the cylinder when necessary. During the operation of the diesel engine, there is a lot of carbon buildup inside the cylinder. During the maintenance of the power unit, the large size of the parts may cause them to be bumped. It is necessary to ensure the cleanliness and sealing of the connection channel between the indicator gauge and the cylinder. Therefore, the system design needs to add a dirt-proof and thread protection device. However, the existing thread protection device, after installation, will rotate during use, causing the thread protection device to detach from the indicator gauge, thus failing to achieve the function of dirt-proofing and protection.

[0003] Therefore, it is necessary to provide a new sealing joint device for the indicator valve of a medium-speed diesel engine to solve the above-mentioned technical problems. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention provides a sealing joint device for the indicator valve of a medium-speed diesel engine.

[0005] The sealing joint device for the indicator valve of a medium-speed diesel engine provided by the present invention includes: a sealing joint and a combustion chamber. One end of the sealing joint is threadedly connected to an indicator valve assembly, and the other end of the sealing joint is connected to a connecting rope. An indicator valve gasket is provided between the outside of the cylinder head of the combustion chamber and the indicator valve assembly. The indicator valve assembly and the combustion chamber are fixedly connected by threads. An installation plate is installed on one side of the indicator valve assembly, and a limit tooth is installed on one side of the installation plate.

[0006] Preferably, the sealing joint includes: a threaded protective cap, a plug shaft, and a tent ring. The top of the indicator valve assembly is threadedly connected to the threaded protective cap, the top of the threaded protective cap is rotatably connected to the plug shaft, and the middle of the plug shaft is fitted with a tent ring.

[0007] Preferably, the indicator valve assembly includes: an indicator valve, a cap, a positioning pin, and a limiting ring. The indicator valve is threadedly connected to the top of the combustion chamber. A cap is installed on the top of the indicator valve. A positioning pin is installed in the middle of the cap. A limiting ring is sleeved in the middle of the cap.

[0008] Preferably, one end of the connecting rope is connected to the tent loop, and the other end of the connecting rope is connected to the limiting ring.

[0009] Preferably, one side of the indicator valve is symmetrically fixedly connected with ear plates, and the two ear plates are rotatably connected to the mounting plate. One of the ear plates has a spring fixed inside, and one end of the spring is fixedly connected to a sliding plate. The sliding plate is slidably connected to the ear plate. A top rod is fixedly connected to the side of the sliding plate away from the spring. A square block is fixedly connected to the end of the top rod near the sliding plate. A square groove is opened at the bottom of the mounting plate. The square groove is slidably connected to the square block. By pressing the top rod and compressing the spring, when the square block moves into the ear plate, the mounting plate is no longer restricted and can rotate 90 degrees.

[0010] Preferably, a groove is provided on one side of the mounting plate, a threaded rod is rotatably connected to one side of the mounting plate, a threaded slider is threadedly connected to one end of the threaded rod, the threaded slider is slidably connected to the groove, and the threaded slider is slidably connected to the inside of the limiting tooth.

[0011] Preferably, the inner side of the mounting plate is designed in an arc shape, and the arc shape coincides with the axis of the threaded protective cap.

[0012] Compared with related technologies, the sealing joint device for the indicator valve of a medium-speed diesel engine provided by the present invention has the following beneficial effects:

[0013] Enhanced sealing and anti-fouling function: The device effectively prevents external dirt from entering the cylinder connection channel through a complex sealing joint structure, including components such as threaded protective caps, plug shafts, and tent rings, ensuring the cleanliness of the measurement process. At the same time, it improves sealing performance, avoids gas leakage, and thus ensures the accuracy of measurement data.

[0014] Preventing accidental rotation: Even under external force or misoperation, such as accidental tool impact or improper maintenance, the mounting plate and its connected threaded protective caps cannot easily rotate due to the presence of the limiting teeth. This design effectively avoids seal failure or component loosening caused by rotation, ensuring the overall stability and safety of the system. Attached Figure Description

[0015] Figure 1 A schematic diagram of the sealing joint device for the indicator valve of a medium-speed diesel engine provided by the present invention;

[0016] Figure 2 for Figure 1 The diagram shows the structure of the back side;

[0017] Figure 3 for Figure 1 The diagram shows a partial cross-sectional view of the ear plate.

[0018] Figure 4 for Figure 1 The diagram shows the structure of the mounting plate.

[0019] The following are the labeling elements in the diagram: 1. Connecting rope; 2. Sealing joint; 21. Threaded protective cap; 22. Plug shaft; 23. Tent ring; 3. Indicator valve assembly; 31. Indicator valve; 32. Cap; 33. Positioning pin; 34. Limiting ring; 4. Indicator valve gasket; 5. Combustion chamber; 6. Mounting plate; 7. Limiting tooth; 41. Ear plate; 42. Fixing spring; 43. Slide plate; 44. Top rod; 45. Square block; 46. Square groove; 51. Slide groove; 52. Threaded rod; 53. Threaded slider. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0021] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0022] Please see Figures 1 to 4 A sealing joint device for a medium-speed diesel engine indicator valve is disclosed. The sealing joint device includes a sealing joint 2 and a combustion chamber 5. One end of the sealing joint 2 is threadedly connected to an indicator valve assembly 3, and the other end of the sealing joint 2 is connected to a connecting rope 1. An indicator valve gasket 4 is provided between the outside of the cylinder head of the combustion chamber 5 and the indicator valve assembly 3. The indicator valve assembly 3 and the combustion chamber 5 are fixedly connected by threads. An mounting plate 6 is installed on one side of the indicator valve assembly 3. A limiting tooth 7 is installed on one side of the mounting plate 6. The inner side of the mounting plate 6 is arc-shaped, and the arc shape coincides with the axis of the threaded protective cap 21.

[0023] Please see Figure 1 and Figure 2 The sealing joint 2 includes: a threaded protective cap 21, a plug shaft 22, and a tent ring 23. The top of the indicator valve assembly 3 is threadedly connected to the threaded protective cap 21, and the top of the threaded protective cap 21 is rotatably connected to the plug shaft 22. The middle of the plug shaft 22 is fitted with a tent ring 23.

[0024] Please see Figure 2-3 The indicator valve assembly 3 includes: an indicator valve 31, a cap 32, a positioning pin 33, and a limiting ring 34. The top of the combustion chamber 5 is threadedly connected to the indicator valve 31. The top of the indicator valve 31 is fitted with a cap 32. The cap 32 is fitted with a positioning pin 33 in the middle. The cap 32 is fitted with a limiting ring 34 in the middle. One end of the connecting rope 1 is connected to the tent ring 23, and the other end of the connecting rope 1 is connected to the limiting ring 33.

[0025] Please see Figure 3-4 A lug plate 41 is symmetrically fixedly connected to one side of the indicator valve 31. The two lug plates 41 are rotatably connected to the mounting plate 6. A spring 42 is fixed inside one of the lug plates 41. A slide plate 43 is fixedly connected to one end of the spring 42. The slide plate 43 is slidably connected to the lug plate 41. A top rod 44 is fixedly connected to the side of the slide plate 43 away from the spring 42. A square block 45 is fixedly connected to the end of the top rod 44 near the slide plate 43. A square groove 46 is opened at the bottom of the mounting plate 6. The square groove 46 is slidably connected to the square block 45. By pressing the top rod 44, the spring 42 is compressed. When the square block 45 moves into the lug plate 41, the mounting plate 6 is unrestricted and can rotate 90 degrees.

[0026] Please see Figure 4 The mounting plate 6 has a groove 51 on one side, and a threaded rod 52 is rotatably connected to one side of the mounting plate 6. One end of the threaded rod 52 is threadedly connected to a threaded slider 53. The threaded slider 53 is slidably connected to the groove 51, and the threaded slider 53 is slidably connected to the inside of the limiting tooth 7.

[0027] The working principle of the sealing joint device for the indicator valve of a medium-speed diesel engine provided by this invention is as follows:

[0028] It mainly connects to the cylinder head of the diesel engine, connecting the internal space of each cylinder of the diesel engine to the system. The compression pressure and maximum explosion pressure inside the cylinder are measured by an external indicator meter when the diesel engine is working. The parameters of the diesel engine are adjusted based on this data, and the explosion pressure curve is plotted to characterize the power output of a single cylinder.

[0029] In use, the indicator valve assembly 3 is installed on the hole reserved in the diesel engine for measuring the explosion pressure, which communicates with the combustion chamber 5 in the cylinder. It is connected by threads. The sealing joint 2 is then connected to the indicator valve assembly 3 via a threaded protective cap 21 and a connecting rope 1. The indicator valve 31 has a cap 32 at its switch end. When explosion pressure needs to be measured, the cap 32 is screwed on, which opens the indicator valve 31 via the positioning pin 33. At this time, the pressure inside the indicator valve 31 is consistent with the real-time pressure inside the cylinder. The threaded protective cap 21 is removed, and an indicator gauge is connected at this point via threads to monitor the cylinder pressure during diesel engine operation. To remove the threaded protective cap 21, first press the top rod 44 to compress the spring 42. When the square block 45 moves into the ear plate 41, the mounting plate 6 loses its restriction and can be rotated 90 degrees. At this time, the limiting tooth 7 disengages from the threaded protective cap 21, and the threaded protective cap 21 can be removed. When the rotation position of the threaded protective cap 21 does not coincide with the limiting tooth 7, simply rotate the threaded rod 52 to drive the threaded slider 53 to move. At this time, the limiting tooth 7 slides along the slide groove 51 until the limiting tooth 7 coincides with the edge of the threaded protective cap 21, and the limiting tooth 7 limits the rotation of the threaded protective cap 21.

[0030] The working principle of the sealing joint device for the indicator valve of a medium-speed diesel engine provided by the present invention is as follows:

[0031] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A sealed joint device for a indicator valve of a medium speed diesel engine, comprising: The sealing joint (2) and the combustion chamber (5) are characterized in that: one end of the sealing joint (2) is threadedly connected to the indicator valve assembly (3), the other end of the sealing joint (2) is connected to the connecting rope (1), an indicator valve gasket (4) is provided between the outside of the cylinder head of the combustion chamber (5) and the indicator valve assembly (3), the indicator valve assembly (3) and the combustion chamber (5) are fixedly connected by threads, and an installation plate (6) is installed on one side of the indicator valve assembly (3), and a limit tooth (7) is installed on one side of the installation plate (6).

2. The sealing joint device for a medium speed diesel indicator valve according to claim 1, characterized in that, The sealing joint (2) includes: a threaded protective cap (21), a plug shaft (22), and a tent ring (23). The top of the indicator valve assembly (3) is threadedly connected to the threaded protective cap (21), and the top of the threaded protective cap (21) is rotatably connected to the plug shaft (22). The middle of the plug shaft (22) is fitted with a tent ring (23).

3. The medium speed diesel indicator valve seal joint device of claim 1, wherein The indicator valve assembly (3) includes: indicator valve (31), cap (32), positioning pin (33) and limiting ring (34). The top of the combustion chamber (5) is threadedly connected to the indicator valve (31). The top of the indicator valve (31) is equipped with a cap (32). The cap (32) is installed in the middle of the cap (32). The limiting ring (34) is sleeved in the middle of the cap (32).

4. The medium speed diesel indicator valve seal joint apparatus of claim 1, wherein, One end of the connecting rope (1) is connected to the tent loop (23), and the other end of the connecting rope (1) is connected to the limiting ring (33).

5. The medium speed diesel indicator valve seal joint apparatus of claim 1, wherein, A symmetrical ear plate (41) is fixedly connected to one side of the indicator valve (31). The two ear plates (41) are rotatably connected to the mounting plate (6). A spring (42) is fixed inside one of the ear plates (41). A slide plate (43) is fixedly connected to one end of the spring (42). The slide plate (43) is slidably connected to the ear plate (41). A top rod (44) is fixedly connected to the side of the slide plate (43) away from the spring (42). A square block (45) is fixedly connected to the end of the top rod (44) near the slide plate (43). A square groove (46) is opened at the bottom of the mounting plate (6). The square groove (46) is slidably connected to the square block (45). By pressing the top rod (44) and compressing the spring (42), when the square block (45) moves into the ear plate (41), the mounting plate (6) loses its restriction and can rotate 90 degrees.

6. The medium speed diesel indicator valve seal joint apparatus of claim 1, wherein, A groove (51) is provided on one side of the mounting plate (6), and a threaded rod (52) is rotatably connected to one side of the mounting plate (6). A threaded slider (53) is threadedly connected to one end of the threaded rod (52). The threaded slider (53) is slidably connected to the groove (51), and the threaded slider (53) is slidably connected to the limiting tooth (7).

7. The medium speed diesel indicator valve seal joint apparatus of claim 1, wherein, The inner side of the mounting plate (6) is designed in an arc shape, and the arc shape coincides with the axis of the threaded protective cap (21).

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