CN114135415B - Method and structure for monitoring water leakage and air leakage in cylinder cover in real time during operation - Google Patents
Method and structure for monitoring water leakage and air leakage in cylinder cover in real time during operation Download PDFInfo
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- CN114135415B CN114135415B CN202111446822.9A CN202111446822A CN114135415B CN 114135415 B CN114135415 B CN 114135415B CN 202111446822 A CN202111446822 A CN 202111446822A CN 114135415 B CN114135415 B CN 114135415B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F1/00—Cylinders; Cylinder heads
- F02F1/24—Cylinder heads
- F02F1/242—Arrangement of spark plugs or injectors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B77/00—Component parts, details or accessories, not otherwise provided for
- F02B77/08—Safety, indicating, or supervising devices
- F02B77/085—Safety, indicating, or supervising devices with sensors measuring combustion processes, e.g. knocking, pressure, ionization, combustion flame
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F11/00—Arrangements of sealings in combustion engines
- F02F11/002—Arrangements of sealings in combustion engines involving cylinder heads
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
The invention discloses a method and a structure for monitoring water leakage and air leakage in a cylinder cover in real time during operation, and belongs to the technical field of real-time monitoring. The problems such as fuel dilution, engine oil dilution, abnormal abrasion of moving parts, high crankcase pressure, insufficient output power and the like can be caused by the conditions of water leakage and air leakage in the cylinder cover, and a large amount of cooling water can possibly enter a combustion chamber to generate water hammer; due to serious faults such as cylinder pulling, tile grinding and the like caused by insufficient viscosity after engine oil dilution, the leakage condition caused by the sealing failure of the oil sprayer sheath and the cylinder cover and the gas leakage condition caused by the sealing failure of the oil sprayer and the cylinder cover are discovered in real time and as early as possible, a user is reminded to maintain and repair as soon as possible, the larger damage to the diesel engine caused by the leakage and gas leakage condition of the cylinder cover is reduced, and the larger property loss of the user is avoided.
Description
Technical Field
The invention relates to the technical field of real-time monitoring, in particular to a method and a structure for monitoring water leakage and air leakage in a cylinder cover in real time during operation.
Background
The cylinder cover is one of the important parts of the diesel engine, and is mainly used for forming a working space of a piston by being matched with a cylinder, and meanwhile, cooling, lubrication, air intake and exhaust of the diesel engine and providing a seating position for an oil injector are required. Because the cooling water cavity structure is complex, the cooling water cavity is heated unevenly in the working process, and therefore, the conditions of leakage of cooling water of the cylinder cover and leakage of fuel gas of the combustion chamber occur. The problems of white smoke, too fast cooling water drop, engine oil dilution, fuel oil dilution and the like of the diesel engine caused by water leakage of the cylinder cover can be seriously caused, and serious accidents such as water hammer and the like can occur when a large amount of cooling water enters the combustion chamber; the air leakage of the cylinder cover can cause the problems of corrosion of the fuel injector, damage of a sealing ring of a sheath of the fuel injector, insufficient power of a diesel engine and the like. In the water leakage and air leakage faults of the cylinder cover, water leakage caused by the sealing failure of the oil sprayer sheath and the cylinder cover and gas leakage caused by the sealing failure of the oil sprayer and the cylinder cover are most common, so that the water leakage and air leakage conditions are found as early as possible in real time and are very important.
Because the cooling water cavity of the cylinder cover has a complex structure and is heated unevenly in the working process, the conditions of leakage of cooling water of the cylinder cover and leakage of fuel gas of the combustion chamber occur. In the water leakage and air leakage faults of the cylinder cover, water leakage caused by the sealing failure of the oil sprayer sheath and the cylinder cover and gas leakage caused by the sealing failure of the oil sprayer and the cylinder cover are the most common. If the problems cannot be found in time, the problems such as fuel dilution, engine oil dilution, abnormal abrasion of a moving part, insufficient output power and the like can be caused, and a large amount of cooling water can possibly enter a combustion chamber to generate water hammer; and serious faults such as cylinder pulling, tile grinding and the like caused by insufficient viscosity after engine oil dilution.
The method and the structure for monitoring the water leakage and the air leakage in the cylinder cover in real time during operation are used for finding the water leakage and the air leakage in real time as soon as possible, so that a user can conveniently maintain and repair the cylinder cover as soon as possible, and the damage to the diesel engine caused by the water leakage and the air leakage of the cylinder cover is reduced.
Disclosure of Invention
A method for monitoring water leakage and air leakage in a cylinder cover in real time during operation comprises an oil sprayer, a cylinder cover, an O-shaped sealing ring, an oil sprayer jacket, a sealing copper pad and an oil sprayer connecting rod;
preferably, one side of the cylinder cover is penetrated with a fuel injector extension rod, an inner cavity of the fuel injector extension rod penetrates through the side end of the fuel injector, one side of the cylinder cover is provided with an O-shaped sealing ring, the bottom end of the fuel injector is provided with a sealing copper pad, and one side of the fuel injector is provided with the fuel injector extension rod.
Preferably, the oil sprayer extension rod is of a double-layer tubular structure, and is respectively an extension rod inner pipe and an extension rod outer pipe, wherein the extension rod inner pipe penetrates through the inner cavity of the oil sprayer, and the extension rod outer pipe is a channel for guiding oil return of the oil sprayer out of the cylinder cover.
Preferably, the oil sprayer, the cylinder cover, the O-shaped sealing ring of the oil sprayer, the oil sprayer sheath and the oil sprayer connecting rod jointly form a water leakage and air leakage collecting cavity of the cylinder cover, and the outer end of the cylinder cover is provided with an inner cavity which penetrates through the cylinder cover in an open state.
Preferably, the lower extreme of cylinder head sets up O type sealing washer, the opposite side of O type sealing washer is laminated with the sprayer sheath, the upper end of sprayer sheath sets up two sets of O type sealing washer, and sprayer sheath lower part screw thread seals.
Preferably, two sets of O-shaped sealing rings are arranged between the inner connecting rod pipe and the outer connecting rod pipe.
Preferably, the oil sprayer extension rod is arranged at one side of the oil sprayer, and four groups of oblong holes are processed at positions corresponding to oil return holes of the oil sprayer on the circumference of the extension rod outer pipe.
Preferably, four groups of oblong holes are processed on the circumferences of the connecting rod and the connecting rod outer tube of the oil sprayer, and hinged joints are arranged at positions corresponding to the oblong holes.
Preferably, a fuel injector connecting rod is arranged on the side end face of the fuel injector and the cylinder cover, the upper end of the fuel injector is sealed through an O-shaped sealing ring), the lower end of the fuel injector is sealed through a sealing copper pad), and the fuel injector connecting rod is connected with the cylinder cover through the connecting rod sealing ring).
Preferably, two groups of hinged sealing rings are used for sealing between the outer pipe of the connecting rod and the hinged joint, and the clamping ring is used for fixing the hinged joint at the axial position of the connecting rod of the fuel injector.
In order to better show a method for monitoring water leakage and air leakage in a cylinder cover in real time in operation, the embodiment now provides a method for monitoring water leakage and air leakage in the cylinder cover in real time in operation, which comprises the following steps:
the invention provides another technical scheme that: the method for monitoring water leakage and air leakage in the cylinder cover in real time during operation comprises the following steps:
s1: when the cylinder cover is cast, a casting hole which can be inserted into a connecting rod of the oil sprayer is reserved and directly communicated with an installation hole of the oil sprayer;
s2: the connecting rod of the fuel injector is actually a double-layer oil pipe structure, the inner layer pipe is a passage for leading fuel oil conveyed by an external fuel injection pump to the fuel injector, and the outer layer pipe is a passage for leading return oil of the fuel injector out of the cylinder cover. The oil sprayer, the cylinder cover, the O-shaped sealing ring of the oil sprayer, the oil sprayer sheath and the oil sprayer connecting rod form a collecting cavity for water leakage and air leakage of the cylinder cover, namely a part indicated by grid lines in the figure;
s3: the outside of the cylinder cover is provided with a detection hole or a collection cavity for alarming Kong Zhitong that the cylinder cover leaks water and leaks air. The monitoring hole is not required to be connected with any sensor, and whether the fluid liquid and the gas leak out of the cylinder head or not can be judged by visual observation;
s4: when the diesel engine runs, the water leakage and the air leakage monitoring holes of the cylinder cover are visually observed, and if no fluid leakage exists, the cylinder cover oil sprayer sheath and the oil sprayer sealing copper gasket are normally sealed; if the monitoring hole leaks water or fuel gas, namely, the problem that the sealing failure of the oil injector sheath or the oil injector sealing copper gasket 5 occurs in the cylinder cover is shown, if the oil leaked from the hole leaks, the O-shaped sealing ring at the upper part of the oil injector is damaged, and the oil at the upper part of the cylinder cover, such as a lubricating valve system, flows into the collecting cavity.
Compared with the prior art, the invention has the advantages that:
in the running process of the diesel engine, whether leakage occurs in an external monitoring hole (or an alarm hole) of the cylinder cover of the diesel engine or not can be visually observed, and the method for indirectly monitoring the leakage caused by the failure of the sealing between the sheath of the fuel injector in the cylinder cover and the leakage caused by the failure of the sealing between the fuel injector and the cylinder cover can be realized in real time.
And a mounting hole of the connecting rod of the fuel injector is cast in the cylinder cover and communicated with the mounting hole of the fuel injector. The hole integrates two functions, namely, the hole is used for installing a connecting rod of a fuel injector and can form a leakage collecting cavity structure.
The connecting rod of the oil injector is of a double-layer pipe structure, the oil inlet and return passage of the oil injector is integrated, and the connecting rod is completely isolated from an external cylinder cover after being inserted into the oil injector, so that the problems of fuel dilution, fuel tank pollution and the like caused by mixing of external media into the oil injector for oil return can be avoided.
The problems such as fuel dilution, engine oil dilution, abnormal abrasion of moving parts, high crankcase pressure, insufficient output power and the like can be caused by the conditions of water leakage and air leakage in the cylinder cover, and a large amount of cooling water can possibly enter a combustion chamber to generate water hammer; due to serious faults such as cylinder pulling, tile grinding and the like caused by insufficient viscosity after engine oil dilution, the leakage condition caused by the sealing failure of the oil sprayer sheath and the cylinder cover and the gas leakage condition caused by the sealing failure of the oil sprayer and the cylinder cover are discovered in real time and as early as possible, a user is reminded to maintain and repair as soon as possible, the larger damage to the diesel engine caused by the leakage and gas leakage condition of the cylinder cover is reduced, and the larger property loss of the user is avoided.
Drawings
FIG. 1 is a schematic diagram of a structure for monitoring water leakage and air leakage in a cylinder head in real time during operation;
FIG. 2 is a schematic diagram of the assembly of the cylinder head with a structure for monitoring water leakage and air leakage in the cylinder head in real time during operation;
FIG. 3 is a schematic diagram showing the assembly of a fuel injector and a connecting rod in a structure for monitoring the water leakage and the air leakage in a cylinder cover in real time during operation;
FIG. 4 is an enlarged view of a portion of the connecting rod and the injector in the structure for monitoring the water leakage and the air leakage in the cylinder cover in real time during operation;
FIG. 5 is a schematic sealing diagram of a cylinder head assembly and a fuel injector assembly of the structure for monitoring water and air leakage in the cylinder head in real time during operation.
The reference numerals in the figures illustrate: 1. an oil injector; 2. a cylinder head; 3,31,32,33, O-ring seal; 4. an injector sheath; 5. sealing the copper pad; 6. a connecting rod of the oil sprayer; 61. a connecting rod inner tube; 62. an extension rod outer tube; 41,42, a connecting rod sealing ring; 8. a hinge joint; 9. a sealing ring is hinged; 10. and a clasp.
Detailed Description
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "configured to," "engaged with," "connected to," and the like are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be the communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Referring to fig. 1-5, the present invention provides a technical solution:
the method for monitoring water leakage and gas leakage in the cylinder cover in real time during operation comprises a fuel injector 1, a cylinder cover 2, an O-shaped sealing ring 3, a fuel injector sheath 4, a sealing copper pad 5 and a fuel injector extension rod 6, wherein one side of the cylinder cover 2 is penetrated with the fuel injector extension rod 6, an inner cavity of the fuel injector extension rod 6 penetrates through the side end of the fuel injector 1, one side of the cylinder cover 2 is provided with the O-shaped sealing ring 3, the bottom end of the fuel injector 1 is provided with the sealing copper pad 5, one side of the fuel injector 1 is provided with the fuel injector extension rod 6, the fuel injector extension rod 6 is of a double-layer tubular structure, the connecting rod inner pipe 61 and the connecting rod outer pipe 62 are respectively penetrated, the connecting rod inner pipe 61 and the inner cavity of the fuel injector 1 are penetrated, the connecting rod outer pipe 62 is a channel for guiding return oil of the fuel injector 1 out of the cylinder cover 2, the fuel injector 1, the cylinder cover 2, the fuel injector O-shaped sealing ring 3, the fuel injector sheath 4 and the fuel injector extension rod 6 jointly form a water leakage and gas leakage collecting cavity of the cylinder cover, the outer end of the cylinder cover 2 is provided with an opening state which penetrates through the inner cavity of the cylinder cover 2, the lower end of the cylinder cover 2 is provided with an O-shaped sealing ring, the other side of the O-shaped sealing ring is attached to the oil sprayer sheath 4, the upper end of the oil sprayer sheath 4 is provided with two groups of O-shaped sealing rings 31, the lower part of the oil sprayer sheath 4 is sealed by threads, the two groups of O-shaped sealing rings 32 are arranged between the inner pipe 61 of the connecting rod and the outer pipe 62 of the connecting rod, the oil sprayer connecting rod 6 is arranged on one side of the oil sprayer 1, four groups of long round holes are processed on the circumference of the outer pipe 62 of the connecting rod and correspond to oil return holes of the oil sprayer 1, four groups of long round holes are processed on the circumferences of the connecting rod 6 and the outer pipe 62 of the oil sprayer, a hinge joint 8 is arranged at the position corresponding to the long round holes, the oil sprayer connecting rod 6 is arranged on the side end face of the oil sprayer 1 and the cylinder cover 2, the upper end of the oil sprayer 1 is sealed through an O-shaped sealing ring 33, the lower end of the oil sprayer 1 is sealed through a sealing copper gasket 5, a connecting rod sealing ring 41 is connected between a connecting rod 6 of the oil sprayer and a cylinder cover 1, two groups of hinged sealing rings 9 are used for sealing between a connecting rod outer pipe 62 and a hinged joint 8, and a clamping ring 10 is used for fixing the axial position of the hinged joint 8 at the connecting rod 6 of the oil sprayer.
As shown in fig. 2, the cylinder head assembly is mainly composed of a cylinder head 2, an injector boot O-ring 31, and an injector boot 4. When the cylinder cover 2 is cast, a mounting hole of a connecting rod of the fuel injector is reserved and is directly connected with the mounting hole of the fuel injector. The sealing modes of the cylinder cover and the oil sprayer sheath are various, and the scheme adopts: the upper part of the sheath is provided with two O-shaped sealing rings, and the threads at the lower part of the sheath are sealed by adding sealant.
As shown in fig. 4, the oil sprayer extension rod is of a double-layer pipe design and is divided into an extension rod inner pipe 61 and an extension rod outer pipe 62; the 2 groups of O-shaped sealing rings 32 are arranged between the inner pipe of the extension rod and the outer pipe of the extension rod, so as to play a role in supporting and sealing; the connecting rod is close to the side of the oil injector, 4-6 long round holes are processed on the circumference of the outer tube and at positions corresponding to oil return holes of the oil injector, so that oil return of the oil injector can flow into a space between the inner tube and the outer tube of the connecting rod; the oil side of the oil injection pump is connected, 4-6 oblong holes are also processed on the circumference of the outer pipe, and a hinge joint 8 is arranged at the position corresponding to the oblong holes; 2 hinged sealing rings 9 are used for sealing between the outer tube and the hinged joint; finally, the clasp 10 is used to fix the axial position of the joint on the extension rod. The connecting rod is provided with threads on the side of the oil sprayer and is in threaded connection with the oil sprayer. Thus, the inner pipe of the connecting rod is used for conveying oil from the oil injector to the oil injector; the oil return in the oil sprayer can pass through the gap between the two layers of pipes of the connecting rod and finally be discharged by the articulated joint.
As shown in fig. 5, after the injector 1 is installed, an injector connecting rod 6 is installed from the side surface of the cylinder cover 2, the upper part of the injector is sealed by an injector O-shaped sealing ring 33, and the lower part of the injector is sealed by a sealing copper gasket 5; the sealing between the connecting rod and the cylinder cover assembly uses a connecting rod sealing ring 42, a cavity is formed between the cylinder cover assembly and the fuel injector and the connecting rod assembly, and a hole (a cylinder cover water leakage and air leakage monitoring hole) which is always in an open state is arranged outside the cylinder cover and is communicated with the cavity. When the diesel engine is running, if the hole leaks water or fuel gas, the problem that the oil injector sheath or the oil injector sealing copper gasket fails in the cylinder cover is shown.
In order to better show a method for monitoring water leakage and air leakage in a cylinder cover in real time in operation, the embodiment now provides a method for monitoring water leakage and air leakage in the cylinder cover in real time in operation, which comprises the following steps:
s1: when the cylinder cover 2 is cast, a casting hole which can be inserted into the oil sprayer connecting rod 6 is reserved and directly communicated with the oil sprayer mounting hole;
s2: the injector connecting rod 6 is actually a double-layer oil pipe structure, the inner layer pipe is a passage for leading the fuel oil conveyed by the external fuel injection pump to the injector, and the outer layer pipe is a passage for leading the return oil of the injector out of the cylinder cover. The oil injector 1, the cylinder cover 2, the oil injector O-shaped sealing ring 3, the oil injector sheath 4 and the oil injector connecting rod 6 together form a collecting cavity (namely a part indicated by grid lines in FIG. 1) for water leakage and gas leakage of the cylinder cover;
s3: the outside of the cylinder cover is provided with a detection hole which is always in an open state or a collecting cavity for alarming Kong Zhitong the water leakage and the air leakage of the cylinder cover. The monitoring hole is not required to be connected with any sensor, and whether the fluid liquid and the gas leak out of the cylinder head or not can be judged by visual observation;
s4: when the diesel engine runs, the water leakage and the air leakage monitoring holes of the cylinder cover are visually observed, and if no fluid leakage exists, the cylinder cover oil sprayer sheath and the oil sprayer sealing copper gasket are normally sealed; if the monitoring hole leaks water or fuel gas, namely, the problem that the sealing failure of the oil injector sheath 4 or the oil injector sealing copper gasket 5 occurs in the cylinder cover is shown, if the oil leaked from the hole leaks, the O-shaped sealing ring 3 at the upper part of the oil injector is damaged, and the oil at the upper part of the cylinder cover, such as a lubricating valve system, flows into the collecting cavity.
In the running process of the diesel engine, whether leakage occurs in an external monitoring hole or an alarm hole of a cylinder cover of the diesel engine or not can be observed through visual inspection, and the method for indirectly monitoring water leakage caused by the failure of the sealing between a sheath of an oil injector in the cylinder cover and air leakage caused by the failure of the sealing between the oil injector and the cylinder cover is achieved. The hole integrates two functions, is used for installing the connecting rod of the oil injector, can form a structure of a leakage collecting cavity, is of a double-layer pipe structure, integrates a fuel oil inlet and return passage, is completely isolated from an external cylinder cover after being inserted into the oil injector, and can not cause problems of fuel dilution, fuel tank pollution and the like due to the fact that external medium is mixed into the oil return of the oil injector, and the like, and can cause problems such as fuel dilution, engine oil dilution, abnormal abrasion of moving parts, high crankcase pressure, insufficient output power and the like due to the fact that a large amount of cooling water enters a combustion chamber and water hammer is generated in serious cases; due to serious faults such as cylinder pulling, tile grinding and the like caused by insufficient viscosity after engine oil dilution, the leakage condition caused by the sealing failure of the oil sprayer sheath and the cylinder cover and the gas leakage condition caused by the sealing failure of the oil sprayer and the cylinder cover are discovered in real time and as early as possible, a user is reminded to maintain and repair as soon as possible, the larger damage to the diesel engine caused by the leakage and gas leakage condition of the cylinder cover is reduced, and the larger property loss of the user is avoided.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present invention, and are not intended to limit the invention, and that various changes and modifications may be made therein without departing from the spirit and scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. The utility model provides a structure of in-service real-time supervision cylinder head inside leak, gas leakage which characterized in that: the oil sprayer comprises an oil sprayer (1), a cylinder cover (2), an O-shaped sealing ring (3), an oil sprayer sheath (4), a sealing copper pad (5) and an oil sprayer connecting rod (6);
one side of the cylinder cover (2) is inserted with a fuel injector connecting rod (6), an inner cavity of the fuel injector connecting rod (6) penetrates through the side end of the fuel injector (1), one side of the cylinder cover (2) is provided with an O-shaped sealing ring (3), the bottom end of the fuel injector (1) is provided with a sealing copper pad (5), and one side of the fuel injector (1) is provided with the fuel injector connecting rod (6);
the oil sprayer (1), the cylinder cover (2), the oil sprayer O-shaped sealing ring (3), the oil sprayer jacket (4) and the oil sprayer connecting rod (6) jointly form a collecting cavity for water leakage and air leakage of the cylinder cover, and Kong Zhitong which is always in an open state is arranged outside the cylinder cover.
2. The structure for monitoring water leakage and air leakage in the cylinder cover in real time during operation according to claim 1, wherein: the oil sprayer extension rod (6) is of a double-layer tubular structure, and is respectively provided with an extension rod inner pipe (61) and an extension rod outer pipe (62), the extension rod inner pipe (61) penetrates through the inner cavity of the oil sprayer (1), and the extension rod outer pipe (62) is a channel for guiding oil return of the oil sprayer (1) out of the cylinder cover (2).
3. The structure for monitoring water leakage and air leakage in the cylinder cover in real time during operation according to claim 1, wherein: the lower extreme of cylinder head (2) sets up O type sealing washer, the opposite side of O type sealing washer is laminated with sprayer sheath (4), the upper end of sprayer sheath (4) sets up two sets of O type sealing washer (31), and sprayer sheath (4) lower part screw thread seals.
4. The structure for monitoring water leakage and air leakage in the cylinder cover in real time during operation according to claim 1, wherein: two groups of O-shaped sealing rings (32) are arranged between the connecting rod inner pipe (61) and the connecting rod outer pipe (62).
5. The structure for monitoring water leakage and air leakage in the cylinder cover in real time during operation according to claim 1, wherein: the oil sprayer extension rod (6) is arranged on one side of the oil sprayer (1), and four groups of slotted holes are machined in positions corresponding to oil return holes of the oil sprayer (1) on the circumference of the extension rod outer tube (62).
6. The structure for monitoring water leakage and air leakage in the cylinder cover in real time during operation according to claim 1, wherein: four groups of oblong holes are processed on the circumferences of the connecting rod (6) and the connecting rod outer tube (62) of the oil sprayer, and a hinge joint (8) is arranged at the position corresponding to the oblong holes.
7. The structure for monitoring water leakage and air leakage in the cylinder cover in real time during operation according to claim 1, wherein: the oil sprayer is characterized in that an oil sprayer connecting rod (6) is arranged on the side end face of the oil sprayer (1) and the side end face of the cylinder cover (2), the upper end of the oil sprayer (1) is sealed through an O-shaped sealing ring (33), the lower end of the oil sprayer (1) is sealed through a sealing copper pad (5), and the oil sprayer connecting rod (6) is connected with the cylinder cover (1) through a connecting rod sealing ring (41).
8. The structure for monitoring water leakage and air leakage in the cylinder cover in real time during operation according to claim 2, wherein: two groups of hinged sealing rings (9) are used for sealing between the outer pipe (62) of the connecting rod and the hinged joint (8), and the clamping ring (10) is used for fixing the axial position of the hinged joint (8) at the connecting rod (6) of the fuel injector.
9. A method for monitoring water and air leakage in a cylinder cover in real time in operation according to any one of claims 1-8, wherein: the method comprises the following steps:
s1: when the cylinder cover (2) is cast, a casting hole which can be inserted into a connecting rod (6) of the fuel injector is reserved and directly communicated with a mounting hole of the fuel injector;
s2: the oil injector connecting rod (6) is actually of a double-layer oil pipe structure, the inner layer pipe is a passage for leading the fuel oil conveyed by an external oil injection pump to the oil injector, the outer layer pipe is a passage for leading the oil return oil of the oil injector out of the cylinder cover, and the oil injector (1), the cylinder cover (2), the oil injector O-shaped sealing ring (3), the oil injector jacket (4) and the oil injector connecting rod (6) jointly form a collecting cavity for water leakage and air leakage of the cylinder cover;
s3: the outside of the cylinder head is provided with a detection hole which is always in an open state or a collection cavity for alarming Kong Zhitong cylinder head water leakage and air leakage, the detection hole is not required to be connected with any sensor, and the problem of water leakage or air leakage in the cylinder head can be judged only by visually observing whether fluid leaks out of the cylinder head;
s4: when the diesel engine runs, the water leakage and the air leakage monitoring holes of the cylinder cover are visually observed, and if no fluid leakage exists, the cylinder cover oil sprayer sheath and the oil sprayer sealing copper gasket are normally sealed; if the monitoring hole leaks water or fuel gas, namely the problem that the sealing failure of the oil injector sheath (4) or the oil injector sealing copper gasket (5) occurs in the cylinder cover is shown, if the oil leaked from the hole, the O-shaped sealing ring (3) at the upper part of the oil injector is damaged, and the oil at the upper part of the cylinder cover, which lubricates a valve system and the like, flows into the collecting cavity.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111446822.9A CN114135415B (en) | 2021-11-30 | 2021-11-30 | Method and structure for monitoring water leakage and air leakage in cylinder cover in real time during operation |
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| CN202111446822.9A CN114135415B (en) | 2021-11-30 | 2021-11-30 | Method and structure for monitoring water leakage and air leakage in cylinder cover in real time during operation |
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| CN114135415B true CN114135415B (en) | 2023-05-09 |
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