Marine diesel engine indicator valve

Abstract

The utility model discloses a marine diesel engine indicator valve relates to marine diesel engine technical field, including diesel engine body, the cylinder cover is equipped with on diesel engine body top surface, the fixed cover is fixedly arranged on the cylinder cover top surface, the fixed cover is inserted and is equipped with the joint pipe, the joint pipe top surface is fixedly equipped with the valve body, the movable cover is movably arranged on the fixed cover outside, the movable cover outside is equipped with the cooperation frame, the cooperation frame is provided with multiple groups and is fixedly equipped with the joint rod in the inside, the joint pipe outer wall is seted up the joint groove, the joint groove is provided with multiple groups and respectively with multiple joint rod bottom end abuts, the fixed cover outer wall is rotatably equipped with the control cover, and the device is inserted in the fixed cover through the joint pipe, and the movable cover rotates through the slide and the groove cooperation linkage of rotating control cover, and the movable cover drives multiple cooperation frames along the reducing groove sliding, and the joint rod is clamped in the joint groove outer wall joint pipe of cooperation frame and makes the joint rod realize radial locking.

Description

Technical Field

[0001] This utility model relates to the field of marine diesel engine technology, and more specifically, it relates to a marine diesel engine indicator valve. Background Technology

[0002] During the operation of marine diesel engines, cylinder pressure data needs to be collected through indicator valves to monitor combustion status. Existing indicator valves are usually installed by threaded connection or flange fastening to fix the valve body to the cylinder head. The installation and disassembly process requires the use of tools such as wrenches to perform multiple turns or multiple points of tightening. The space in the ship's engine room is narrow and the ambient temperature is high. Frequent testing is inconvenient and time-consuming. At the same time, threaded connections are prone to loosening under vibration conditions and require regular checks on the tightness. There is a lack of fast and reliable tool-free connection structures.

[0003] The indicator valve and cylinder head need a reliable seal to withstand the high temperature and high pressure of the gas inside the cylinder. Existing sealing structures usually rely on the thread preload or flange bolt tightening force to press the sealing element to achieve a seal. The valve body positioning and locking and sealing tightening need to be operated in separate steps and are independent of each other. It is difficult to complete the locking and sealing tightening simultaneously during installation. When disassembling, the sealing tightening must be released first and then the locking and unlocking must be performed. The operation steps are cumbersome and the sealing tightening force is difficult to keep consistent. There is a lack of an integrated structure that links the locking and sealing. Utility Model Content

[0004] (a) Technical problems to be solved In view of the problems existing in the prior art, this utility model provides a marine diesel engine indicator valve to solve the technical problems mentioned in the background art.

[0005] (II) Technical Solution To achieve the above objectives, this utility model provides the following technical solution: a marine diesel engine indicator valve, comprising a diesel engine body, a cylinder head mounted on the top surface of the diesel engine body, a fixed sleeve fixedly mounted on the top surface of the cylinder head, a retaining tube inserted into the fixed sleeve, a valve body fixedly mounted on the top surface of the retaining tube, a movable sleeve movably mounted on the outside of the fixed sleeve, a mating frame mounted on the outside of the movable sleeve, the mating frame having multiple sets, each with a retaining rod fixedly mounted on its inner side, a retaining groove formed on the outer wall of the retaining tube, multiple sets of retaining grooves having multiple sets abutting against the bottom ends of the retaining rods respectively, and a control sleeve rotatably mounted on the outer wall of the fixed sleeve.

[0006] The present invention is further configured such that a limiting rod is fixedly provided on the outer wall of the control sleeve, and multiple sets of the limiting rod are provided and respectively abut against the outer side of multiple sets of mating frames. The limiting rod rotates synchronously with the control sleeve to limit the mating frame on the outside and control its movement direction.

[0007] The present invention is further configured such that a variable diameter groove is provided on the inner side of each of the multiple sets of limiting rods, and the multiple sets of mating frames slide in the variable diameter groove. The change in the width of the variable diameter groove controls the radial movement range of the mating frame, so that the locking rod can switch between locking and disengaging.

[0008] The present invention is further configured such that an abutment block is fixedly provided on the bottom surface of the control sleeve, and multiple sets of the abutment blocks are provided, all of which are arc-shaped on the outside. The abutment blocks push the locking rod to move axially to achieve sealing and pressing, and the arc-shaped outside reduces rotational friction to make the operation smooth.

[0009] The present invention is further configured such that the outer wall of the fixed sleeve is provided with sliding holes, and the sliding holes are provided in multiple sets and are slidably connected to multiple sets of snap-fit ​​rods respectively. The sliding holes guide and limit the snap-fit ​​rods to ensure that they slide smoothly in the radial direction without deviation.

[0010] The present invention is further configured such that a sliding rod is fixedly provided on the top surface of the movable sleeve, and a sliding groove is provided on the bottom surface of the control sleeve. Multiple sets of sliding rods and sliding grooves are provided and slidably connected. The sliding rods and sliding grooves cooperate to realize the linkage rotation of the control sleeve and the movable sleeve while allowing the two to move axially relative to each other.

[0011] The present invention is further configured such that a return spring is provided on the outer side of each of the multiple sets of slide rods, and the two ends of the multiple sets of return springs are respectively fixedly connected to the control sleeve and the movable sleeve. The return spring provides elastic return force so that the movable sleeve is automatically pulled to return to its original position during disassembly, thereby causing the locking rod to disengage from the locking groove.

[0012] The present invention is further configured such that a contact ring is fixedly provided on the inner side of the fixed sleeve, and a compression pad is connected to the bottom end of the clamping tube. The compression pad and the contact ring cooperate to form a sealing contact surface, which is pressed tightly when the clamping tube is pressed down to achieve a reliable seal.

[0013] (III) Beneficial Effects Compared with the prior art, this utility model provides a marine diesel engine indicator valve, which has the following beneficial effects: 1. This device inserts the clamping tube into the fixed sleeve, and the rotating control sleeve rotates in conjunction with the sliding rod and the sliding groove. The movable sleeve drives multiple sets of mating frames to slide along the variable diameter groove. The limit rod pushes the mating frame to make the clamping rod engage in the clamping groove on the outer wall of the clamping tube to achieve radial locking. Only the rotation of the control sleeve is needed to complete the quick clamping and fixing of the valve body. There is no need to use wrenches or other tools to tighten the threads or flanges. It is convenient and time-saving to operate in the narrow and high-temperature environment of the ship's engine room.

[0014] 2. During the rotation of the control sleeve, the device simultaneously drives multiple sets of abutment blocks to push the snap-fit ​​rod to slide along the sliding hole on the outer wall of the fixed sleeve. The snap-fit ​​rod drives the snap-fit ​​tube to move downward so that the bottom extrusion pad and the inner contact ring of the fixed sleeve are pressed and sealed. A single rotation operation synchronously completes the snap-fit ​​locking and sealing. The snap-fit ​​and sealing are linked to form an integrated structure. The sealing and pressing force is determined by the pushing stroke of the abutment block to keep it consistent and reliable.

[0015] 3. When disassembling this device, the control sleeve is rotated in the opposite direction to release the contact block from the locking rod. Multiple sets of return springs automatically pull the movable sleeve to drive the mating frame to slide to the inside of the diameter changing groove. The diameter changing groove drives the mating frame to move outward, causing the locking rod to disengage from the locking groove. At the same time, the pressure on the compression pad is released. Then the locking tube can be pulled out to complete the valve body disassembly. The disassembly process also does not require tools and the return spring provides an automatic reset function. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a marine diesel engine indicator valve according to the present invention; Figure 2 This is a structural diagram of the valve body in its disassembled state in this utility model; Figure 3 This is a cross-sectional view of the fixing sleeve in the snap-fit ​​state of the clamping pipe in this utility model; Figure 4 This is a cross-sectional view of the fixing sleeve and the control sleeve in this utility model; Figure 5 This is a schematic diagram showing the disassembled structure of the movable sleeve and the control sleeve in this utility model.

[0017] In the diagram: 1. Diesel engine body; 2. Cylinder head; 3. Fixed sleeve; 4. Snap-fit ​​pipe; 5. Valve body; 6. Movable sleeve; 7. Fitting bracket; 8. Snap-fit ​​rod; 9. Snap-fit ​​groove; 10. Control sleeve; 11. Limit rod; 12. Variable diameter groove; 13. Abutment block; 14. Sliding hole; 15. Sliding rod; 16. Sliding groove; 17. Return spring; 18. Contact ring; 19. Compression pad. Detailed Implementation

[0018] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0019] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0020] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0021] Please see Figures 1-5 A marine diesel engine indicator valve includes a diesel engine body 1, a cylinder head 2 mounted on the top surface of the diesel engine body 1, a fixed sleeve 3 fixedly mounted on the top surface of the cylinder head 2, a retaining tube 4 inserted into the fixed sleeve 3, a valve body 5 fixedly mounted on the top surface of the retaining tube 4, a movable sleeve 6 movably mounted on the outside of the fixed sleeve 3, a mating frame 7 on the outside of the movable sleeve 6, the mating frame 7 having multiple sets and retaining rods 8 fixedly mounted on its inner side, a retaining groove 9 opened on the outer wall of the retaining tube 4, the retaining groove 9 having multiple sets and abutting against the bottom ends of multiple sets of retaining rods 8 respectively, and a control sleeve 10 rotatably mounted on the outer wall of the fixed sleeve 3.

[0022] In this embodiment, during use, the locking tube 4 is inserted into the fixed sleeve 3. The rotation control sleeve 10 rotates the movable sleeve 6 through the cooperation of multiple sets of sliding rods 15 and sliding grooves 16, and stretches multiple sets of return springs 17. The movable sleeve 6 causes multiple sets of mating frames 7 to slide to the outer end of the variable diameter groove 12. Multiple sets of limiting rods 11 push the mating frames 7 to make the locking rod 8 engage in the locking groove 9. The control sleeve 10 drives multiple sets of abutment blocks 13 to push the locking rod 8 to slide along the sliding hole 14 and at the same time drive the locking tube 4 to squeeze the compression pad 19, thereby sealing the locking tube 4 and the contact ring 18, and completing the tool-free sealing connection of the valve body 5.

[0023] Please see Figures 3-5 As a further implementation of the overall equipment: a limiting rod 11 is fixedly provided on the outer wall of the control sleeve 10, and multiple sets of the limiting rod 11 are provided and respectively abut against the outside of multiple sets of mating frames 7.

[0024] Multiple sets of limiting rods 11 have variable diameter grooves 12 on their inner sides, and multiple sets of mating frames 7 slide within the variable diameter grooves 12. The bottom surface of the control sleeve 10 is fixedly provided with an abutment block 13. Multiple sets of abutment blocks 13 are provided, and the outer side of each block is rounded.

[0025] The outer wall of the fixed sleeve 3 is provided with sliding holes 14, and multiple sets of sliding holes 14 are provided and are slidably connected to multiple sets of snap-fit ​​rods 8 respectively.

[0026] The top surface of the movable sleeve 6 is fixedly provided with a sliding rod 15, and the bottom surface of the control sleeve 10 is provided with a sliding groove 16. Multiple sets of sliding rods 15 and sliding grooves 16 are provided and are slidably connected.

[0027] Each of the multiple sliding rods 15 is provided with a return spring 17 on its outer side, and the two ends of the multiple return springs 17 are respectively fixedly connected to the control sleeve 10 and the movable sleeve 6.

[0028] A contact ring 18 is fixedly provided on the inner side of the fixed sleeve 3, and a compression pad 19 is connected to the bottom end of the clamping tube 4.

[0029] More specifically, during disassembly, the reverse rotation of the control sleeve 10 drives the movable sleeve 6 to rotate. The control sleeve 10 drives multiple sets of abutment blocks 13 to release their contact with multiple sets of locking rods 8. Multiple sets of return springs 17 pull the movable sleeve 6 to drive the multiple sets of locking rods 8 to slide and reset along the sliding hole 14, releasing the pressure on the compression pad 19. The movable sleeve 6 drives multiple sets of mating brackets 7 to slide to the inside of the diameter-changing groove 12. Through the multiple sets of diameter-changing grooves 12, the mating brackets 7 move outward and drive the locking rods 8 to disengage from the slots, releasing the locking of the locking tube 4. Then the locking tube 4 can be pulled out of the fixing sleeve 3 to disassemble the valve body 5.

[0030] In summary, during use or operation of the overall equipment: When in use, the clamping tube 4 is inserted into the fixed sleeve 3. The rotating control sleeve 10, through the cooperation of multiple sets of sliding rods 15 and sliding grooves 16, rotates the movable sleeve 6 and stretches multiple sets of return springs 17. The movable sleeve 6 causes multiple sets of mating frames 7 to slide to the outer end of the variable diameter groove 12. Through multiple sets of limiting rods 11, the mating frames 7 are pushed so that the clamping rod 8 is engaged in the clamping groove 9. The control sleeve 10 drives multiple sets of abutment blocks 13 to push the clamping rod 8 to slide along the sliding hole 14 and at the same time drive the clamping tube 4 to squeeze the compression pad 19, thereby sealing the clamping tube 4 and the contact ring 18, completing the tool-free sealing connection of the valve body 5.

[0031] During disassembly, the reverse rotation of the control sleeve 10 drives the movable sleeve 6 to rotate. The control sleeve 10 drives multiple sets of abutment blocks 13 to release the abutment of multiple sets of locking rods 8. Multiple sets of return springs 17 pull the movable sleeve 6 to drive the multiple sets of locking rods 8 to slide and reset along the sliding hole 14, releasing the compression of the compression pad 19. The movable sleeve 6 drives multiple sets of mating frames 7 to slide to the inside of the diameter changing groove 12. Through the multiple sets of diameter changing grooves 12, the mating frames 7 move outward and drive the locking rods 8 to disengage from the slots, releasing the locking of the locking tube 4. Then the locking tube 4 can be pulled out of the fixing sleeve 3 to disassemble the valve body 5.

[0032] Of all the solutions mentioned above, those involving connections between two components can be selected based on the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other well-known connection methods. These will not be elaborated on here. For all the fixed connections mentioned above, welding is the preferred option. In all the solutions mentioned above, the operation of electrical components, unless otherwise specified, is controlled by a controller. Since the devices matched with the controllers are common devices, their control principles and wiring connections are existing, well-known, and mature technologies, and their specific circuit structures will not be described in detail here. The specific models and specifications of the electrical components involved in this solution need to be selected and determined according to the actual specifications of the device. The specific selection and calculation methods adopt existing technologies in this field, and therefore will not be described in detail. Of all the solutions mentioned above, those involving motors can be combined with reducers if necessary. The connection structure and working principle between the motor and the reducer are existing known technologies and will not be described in detail in this utility model. Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A marine diesel engine indicator valve, comprising a diesel engine body (1), characterized in that: The top surface of the diesel engine body (1) is provided with a cylinder head (2), the top surface of the cylinder head (2) is fixedly provided with a fixed sleeve (3), a clamping tube (4) is inserted into the fixed sleeve (3), the top surface of the clamping tube (4) is fixedly provided with a valve body (5), the outside of the fixed sleeve (3) is provided with a movable sleeve (6), the outside of the movable sleeve (6) is provided with a mating frame (7), the mating frame (7) is provided with multiple sets and each of them is fixedly provided with a clamping rod (8), the outer wall of the clamping tube (4) is provided with a clamping groove (9), the clamping groove (9) is provided with multiple sets and each of them abuts against the bottom end of multiple sets of clamping rods (8), and the outer wall of the fixed sleeve (3) is rotatably provided with a control sleeve (10).

2. The indicator valve for a marine diesel engine according to claim 1, characterized in that: The outer wall of the control sleeve (10) is fixedly provided with a limiting rod (11), and the limiting rod (11) is provided in multiple sets and abuts against the outside of multiple sets of mating frames (7).

3. A marine diesel engine indicator valve according to claim 2, characterized in that: multiple sets The inner side of each limiting rod (11) is provided with a variable diameter groove (12), and multiple sets of the mating frames (7) slide in the variable diameter groove (12).

4. The indicator valve for a marine diesel engine according to claim 3, characterized in that: The bottom surface of the control sleeve (10) is fixedly provided with an abutment block (13), and the abutment block (13) is provided in multiple sets and the outer side is set as an arc.

5. A marine diesel engine indicator valve according to claim 4, characterized in that: The outer wall of the fixed sleeve (3) is provided with sliding holes (14), and the sliding holes (14) are provided in multiple sets and are slidably connected to multiple sets of snap-fit ​​rods (8).

6. The indicator valve for a marine diesel engine according to claim 5, characterized in that: The top surface of the movable sleeve (6) is fixedly provided with a sliding rod (15), and the bottom surface of the control sleeve (10) is provided with a sliding groove (16). The sliding rod (15) and the sliding groove (16) are provided in multiple sets and are slidably connected.

7. A marine diesel engine indicator valve according to claim 6, characterized in that: multiple sets Each slide bar (15) is provided with a return spring (17) on its outer side. The two ends of the multiple sets of return springs (17) are respectively fixedly connected to the control sleeve (10) and the movable sleeve (6).

8. A marine diesel engine indicator valve according to claim 7, characterized in that: The inner side of the fixed sleeve (3) is fixed with a contact ring (18), and the bottom end of the clamping tube (4) is connected with a compression pad (19).

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