CN115680878A - Intelligent device for monitoring state of diesel engine in real time - Google Patents
Intelligent device for monitoring state of diesel engine in real time Download PDFInfo
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- CN115680878A CN115680878A CN202211184018.2A CN202211184018A CN115680878A CN 115680878 A CN115680878 A CN 115680878A CN 202211184018 A CN202211184018 A CN 202211184018A CN 115680878 A CN115680878 A CN 115680878A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
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Abstract
The invention discloses an intelligent device for monitoring the state of a diesel engine in real time.A first inclined channel communicated with a closed cavity is arranged in the side wall of a cylinder body of the diesel engine in a penetrating way, the inner side end of the annular channel is provided with a first opening, the first inclined channel is communicated with the annular channel through the first opening, the annular channel at one side of the first opening is sealed by a baffle, the annular channel at the other side of the baffle is provided with a second opening, the second opening is opened outwards, and the calibers of the first opening and the second opening are smaller than the inner diameter of the annular channel; a plurality of steel balls are arranged in the annular channel on the opposite side of the first opening in a sliding mode, the diameter of each steel ball is consistent with that of the annular channel, the steel balls are arranged continuously, a reading head is fixedly sleeved on the periphery of the skirt edge on the opposite side of the first opening and connected with a monitoring device, and the steel balls move in the channel on the inner side of the reading head relatively. The invention solves the technical problem of insufficient monitoring of the running state of the crankshaft of the diesel engine.
Description
Technical Field
The invention relates to the technical field of intelligent monitoring of the running state of a diesel engine, in particular to an intelligent device for monitoring the state of the diesel engine in real time.
Background
Rotary machines are widely available in many types, such as rotary processing platforms, diesel engines, steam turbines, water pumps, motors, fans, etc. The primary function of these machines is accomplished by a rotary action. A diesel fault is a malfunction of a machine, i.e. its dynamic performance deteriorates, not meeting dynamic specifications. For example, the machine is unstable in operation, abnormal vibration and noise occur, the operating rotational speed output power changes, and the temperature, pressure, flow rate of the medium are abnormal. The information generated is also different. Based on the machine specific information, machine faults can be diagnosed. However, the cause of a machine failure is often not a single factor, particularly for a rotational failure in a mechanical system, and is often the result of a combination of multiple failure factors. Therefore, the state of the system is monitored, and possible faults are early warned.
In the prior art, few devices are used for effectively monitoring the operating state of the diesel engine, particularly for the diesel engine rotating at a high speed, generally, in a machine rotating at a high speed, a crankshaft is fixed in the axial direction in advance in order to improve efficiency, but along with continuous operation of the crankshaft and continuous operation and vibration of the diesel engine, the crankshaft loosens in the axial direction, and as time goes on, the axial play of the crankshaft gradually increases, so that the vibration of the whole diesel engine increases, the operation is unstable, a light person generates friction damage of a sealing part, and a heavy person generates friction collision between the crankshaft and a cylinder body or a peripheral part of the diesel engine.
In the prior art, the application numbers are: CN202210372767.1 discloses a diesel generating set based on intelligent control, but this mechanism monitors the volume change of hole cavity, and it is not high to measure accurate definite.
Disclosure of Invention
An object of the present invention is to solve at least the above problems and to provide at least the advantages described later.
The invention aims to provide an intelligent device for monitoring the state of a diesel engine in real time, which monitors the running state of a crankshaft rotating in a cylinder body of the diesel engine, particularly, the running state of the diesel engine is effectively and remotely monitored through the device, and the change of sealed air pressure caused by the movement of the crankshaft is detected through an angular displacement ball grid ruler, so that the axial movement of the crankshaft is effectively monitored in real time, further faults caused by the movement of the crankshaft are avoided, and the technical problem that the running state of the crankshaft of the diesel engine is not monitored sufficiently is solved.
To achieve these objects and other advantages and in accordance with the purpose of the invention, as embodied and broadly described herein, there is provided an intelligent device for real-time monitoring of a state of a diesel engine, comprising:
the diesel engine cylinder body is internally provided with a closed cavity for accommodating a crankshaft, and two sides of the crankshaft are rotatably arranged in the closed cavity through bearings;
the first end cover is hermetically covered at the axial first end of the diesel engine cylinder body, the periphery of the first end cover is provided with a skirt edge which protrudes out of the outer periphery of the diesel engine cylinder body for a certain distance, and an annular channel is formed in the skirt edge;
the second end cover is hermetically covered at the axial second end of the diesel engine cylinder body;
a first inclined channel communicated with the closed cavity is arranged in the side wall of the diesel engine cylinder in a penetrating manner, a first opening is formed in the inner side end of the circular ring-shaped channel, the first inclined channel is communicated with the circular ring-shaped channel through the first opening, the circular ring-shaped channel on one side of the first opening is sealed by a baffle, a second opening is formed in the circular ring-shaped channel on the other side of the baffle, the second opening is opened outwards, and the calibers of the first opening and the second opening are smaller than the inner diameter of the circular ring-shaped channel;
a plurality of steel balls are arranged in the annular channel on the opposite side of the first opening in a sliding mode, the diameter of each steel ball is consistent with that of the annular channel, the steel balls are arranged continuously, a reading head is fixedly sleeved on the periphery of the skirt edge on the opposite side of the first opening and connected with a monitoring device, and the steel balls move in the channel on the inner side of the reading head relatively.
Preferably, the first end cover is installed on the axial first end side wall of the diesel engine cylinder body, a first circular limiting protrusion is arranged on the inner side wall of the first end cover, a first circular step is formed in the inner peripheral wall of the axial first end of the diesel engine cylinder body, and the outer diameter of the first circular limiting protrusion is the same as that of the first circular step.
Preferably, a second circular limiting protrusion is arranged on the periphery of the first axial end of the crankshaft, the outer diameter of the second circular limiting protrusion is between the inner diameter of the first circular limiting protrusion and the outer diameter of the crankshaft, and a first bearing is arranged on the periphery of the first axial end of the crankshaft.
Preferably, the first end quilt of axial of first bearing first circular spacing arch is spacing with the circular spacing arch of second, the axial second end of first bearing is installed on first circular step, first bearing periphery with the laminating of first circular step internal perisporium sets up, the internal periphery of first bearing with the laminating of bent axle lateral wall, the internal, the periphery of first bearing passes through grease and corresponding contact surface is sealed.
Preferably, the second end cover is installed on the side wall of the axial second end of the diesel engine cylinder body, a third circular limiting protrusion is arranged on the inner side wall of the second end cover, a second circular step is formed in the inner peripheral wall of the axial second end of the diesel engine cylinder body, and the outer diameter of the third circular limiting protrusion is the same as that of the second circular step.
Preferably, a circular limiting disc is arranged on the periphery of the axial second end of the crankshaft, the diameter of the circular limiting disc is larger than that of the crankshaft, and a second bearing is arranged on the periphery of the axial second end of the crankshaft.
Preferably, the axial second end quilt of second bearing the spacing arch of third circle is spacing with circular spacing dish, the axial first end of second bearing is installed on the circular step of second, the second bearing periphery with the laminating of the circular step internal perisporium of second sets up, the interior week of second bearing with the laminating of bent axle lateral wall, the interior, periphery of second bearing passes through grease and corresponding contact surface is sealed.
Preferably, an extending shaft extends from the second axial end of the crankshaft, a shaft hole penetrates through the center of the second end cover, the extending shaft is led out from the shaft hole, the circular limiting disc is detachably mounted on the extending shaft at the second axial end of the crankshaft, and the extending shaft and the inner peripheral wall of the shaft hole are arranged in a sealing and rotating mode;
the diameter of the extension shaft is smaller than that of the crankshaft, the extension shaft penetrates through the shaft hole and is led out outwards, and the leading-out end of the extension shaft is linked with the camshaft through a synchronous belt to output power outwards;
the diameter of the extension shaft is not less than 5 times of the diameter of the longitudinal section of the circular ring-shaped channel.
Preferably, a lubricant is arranged on the inner wall of the circular channel, and the periphery of the longitudinal section of the steel ball is attached to the inner wall of the circular channel to slide; the radian of the connected steel balls is half of the perimeter of the circular ring-shaped channel, and the steel balls are symmetrically distributed in the circular ring-shaped channel on the opposite side of the first opening in an initial state.
Preferably, a circular groove is formed in the side wall of the first axial end of the diesel engine cylinder body, the inner side of the circular groove is communicated with the first inclined channel, the outer side of the circular groove is sealed through the inner side wall of the first end cover, a second inclined channel is formed in the skirt edge, the first end of the second inclined channel is communicated with the circular groove, a third opening is formed in the inner side wall of the first end cover and is in butt joint with the circular groove, and the second end of the second inclined channel is communicated with the third opening.
Compared with the prior art, the invention has the following beneficial effects:
1. an angular displacement ball grid ruler system is constructed by utilizing the self structure of a diesel engine cylinder body, the displacement of a crankshaft is accurately detected by the angular displacement ball grid ruler system, and the measurement accuracy can reach the micron level;
2. the volume change caused by the axial movement of the crankshaft is amplified through the scaling of the measured volume, and the axial displacement of the crankshaft is measured through measuring the angular displacement after the volume change stroke is amplified, so that the measurement precision of the axial displacement of the crankshaft is further improved;
3. by means of timely early warning of the axial displacement of the crankshaft through remote monitoring, faults caused by the displacement of the crankshaft are avoided, and the reliability of stable operation of the diesel engine is improved.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a top view, in transverse cross-section, of the interior of a diesel engine block of the present invention;
FIG. 2 is a transverse cross-sectional top view of a diesel engine block;
FIG. 3 is a longitudinal cross-sectional view of the first end cap;
FIG. 4 isbase:Sub>A cross-sectional view of the first end cap taken along line A-A;
fig. 5 is a cross-sectional view of the second end cap.
Detailed Description
The present invention is described in further detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description.
As shown in fig. 1-5, the present invention provides an intelligent device for monitoring the state of a diesel engine in real time, wherein a closed cavity 210 for accommodating a crankshaft 500 is formed in a cylinder 200 of the diesel engine, a piston moves up and down in the upper space of the closed cavity 210, the crankshaft 500 rotates in the lower space of the closed cavity 210, and the piston drives the crankshaft 500 to rotate in the cylinder 200 of the diesel engine. The two sides of the crankshaft 500 are rotatably mounted at the two ends of the lower portion of the diesel engine cylinder block 200 through bearings, it should be understood that the two ends of the crankshaft 500 are both cylindrical, and are conveniently mounted with the diesel engine cylinder block 200 through bearings, and the main structure of the crankshaft 500 is located in the closed cavity 210.
The first end cover 100 is hermetically covered at the axial first end of the diesel engine cylinder body 200, specifically, the peripheral side wall of the first end cover 100 is mounted on the axial first end side wall of the diesel engine cylinder body 200, a first circular limiting protrusion 150 is arranged on the inner side wall of the first end cover 100, a first circular step 220 is formed on the inner peripheral wall of the axial first end of the diesel engine cylinder body 200, and the outer diameter of the first circular limiting protrusion 150 is the same as that of the first circular step 220.
The periphery of the first axial end of the crankshaft 500 is provided with a second circular limiting protrusion 520, the second circular limiting protrusion 520 and the crankshaft 500 are of an integrated structure, the outer diameter of the second circular limiting protrusion 520 is between the inner diameter of the first circular limiting protrusion 150 and the outer diameter of the crankshaft 500, and the periphery of the first axial end of the crankshaft 500 is provided with a first bearing 410. First bearing 410's the first end of axial quilt first circular spacing arch 150 is spacing with the circular spacing arch of second 520, first bearing 410's axial second end is installed on first circular step 220 to it is spacing with first bearing 410 installation, first bearing 410 periphery with the laminating of the internal perisporium of first circular step 220 sets up, first bearing 410 internal periphery with the laminating of bent axle 500 lateral wall, bent axle 500's the first end of axial rotates the first end of axial at diesel engine cylinder body 200 through first bearing 410, and simultaneously, first bearing 410 is inside, the periphery passes through grease and corresponding contact surface is sealed, thereby guarantees the leakproofness of airtight cavity 210.
The second end cap 300 is hermetically covered at the axial second end of the diesel engine cylinder body 200, the peripheral side wall of the second end cap 300 is mounted on the axial second end side wall of the diesel engine cylinder body 200, a third circular limiting protrusion 320 is arranged on the inner side wall of the second end cap 300, a second circular step 230 is formed on the inner peripheral wall of the axial second end of the diesel engine cylinder body 200, and the outer diameter of the third circular limiting protrusion 320 is the same as the outer diameter of the second circular step 230.
The outer periphery of the axial second end of the crankshaft 500 is provided with a circular limiting disc 530, the diameter of the circular limiting disc 530 is larger than that of the crankshaft 500, the outer periphery of the axial second end of the crankshaft 500 is provided with a second bearing 420, the axial second end of the second bearing 420 is limited by the third circular limiting bulge 320 and the circular limiting disc 530, the axial first end of the second bearing 420 is installed on the second circular step 230, so that the second bearing 420 is installed and limited, the outer periphery of the second bearing 420 is attached to the inner peripheral wall of the second circular step 230, the inner periphery of the second bearing 420 is attached to the side wall of the crankshaft 500, the axial second end of the crankshaft 500, which passes through the second bearing 420, rotates at the axial second end of the diesel engine cylinder body 200, and meanwhile, the inner periphery and the outer periphery of the second bearing 420 are sealed with corresponding contact surfaces through grease, so that the sealing performance of the sealed cavity 210 is ensured.
The extension of the axial second end of bent axle 500 sets up an axle 510 that extends, the central authorities of second end cover 300 run through and set up a shaft hole 310, the axle 510 that extends is followed outwards draws out in the shaft hole 310, circular spacing dish 530 detachable installs on the axle 510 that extends of the axial second end of bent axle 500, when installation or maintenance bent axle 500, can dismantle circular spacing dish 530 get off, after bent axle 500 installed in place, again with the tightening of circular spacing dish 530, the axle 510 that extends with sealed rotation setting between the internal perisporium of shaft hole 310. The shaft hole 310 extends for a certain distance, so that the contact distance and the contact area between the extension shaft 510 and the shaft hole 310 at the position are increased, the sealing performance is improved through grease on the contact surface, and finally the sealing performance of the sealed cavity is enhanced.
The diameter of the extension shaft 510 is smaller than that of the crankshaft 500, the extension shaft 510 penetrates through the shaft hole 310 to be led out outwards, and the leading-out end of the extension shaft 510 is linked with a camshaft through a synchronous belt to output power outwards. As can be seen from this, both ends of the diesel engine block 200 are sealed by the first end cap 100 and the second end cap 300, the crankshaft 500 is led out from the second end cap 300 through the extension shaft 510 and outputs power to the outside, and the main structure of the crankshaft 500 rotates in the sealed cavity 210.
In an initial state, the crankshaft 500 is axially fixed on the diesel engine cylinder block 200 through bearings on two sides, axial movement is effectively avoided, but along with the increase of the continuous operation time of the crankshaft 500, the increase of the rotating speed and the volume change caused by the change of the temperature of the crankshaft 500, and the continuous operation and vibration of the whole diesel engine, the crankshaft 500 becomes loose in the axial direction, and along with the lapse of time, the crankshaft 500 also moves in the axial direction, and the movement amount gradually increases.
After long-term operation, along with the axial movement/play of the crankshaft 500, at this time, because the sealed cavity is sealed, the volume and the air pressure in the sealed cavity are changed correspondingly along with the axial movement of the crankshaft 500.
Specifically, when the crankshaft 500 moves to the first side in the axial direction, the extension shaft 510 moves to the inside of the sealed cavity 210, and the space in the sealed cavity 210 is compressed, so that the air pressure is increased; similarly, if the crankshaft 500 moves to the second side in the axial direction, the air pressure in the sealed cavity 210 decreases, and the amount of change in the air pressure is proportional to the amount of axial movement of the crankshaft 500. Therefore, the amount of axial movement of the crankshaft 500 can be measured by monitoring the amount of change in the air pressure in the sealed cavity 210.
In order to accurately measure the variation of the air pressure in the closed cavity, the invention provides the following technical scheme:
in the scheme of the invention, a skirt edge 110 is arranged on the periphery of the first end cover 100, the skirt edge 110 protrudes out of the periphery of the diesel engine cylinder body 200 for a certain distance, and a circular ring-shaped channel 120 is formed in the skirt edge 110; meanwhile, a first inclined channel 250 communicated with the closed cavity is arranged in the side wall of the diesel engine cylinder body 200 in a penetrating manner, a first opening is arranged at the inner side end of the circular ring-shaped channel 120, and the first inclined channel 250 is communicated with the circular ring-shaped channel 120 through the first opening.
Specifically, a circular groove 240 is formed in a side wall of a first axial end of the diesel engine cylinder 200, an inner side of the circular groove 240 is communicated with one end of the first inclined channel 250, the other end of the first inclined channel 250 is communicated with the sealed cavity 210, an outer side of the circular groove 240 is sealed by an inner side wall of the first end cap 100, meanwhile, a second inclined channel 160 is formed in the skirt 110, a first end of the second inclined channel 160 is communicated with the first opening of the circular groove 120, a third opening is formed in an inner side wall of the first end cap 100, a second end of the second inclined channel 160 is communicated with the third opening, the third opening is in butt joint with the circular groove 240, that is, a radius of the circular groove 240 is the same as a radius of the third opening, and when the first end cap 100 is installed on the side wall of the first axial end of the diesel engine cylinder 200, the third opening is in butt joint with the circular groove 240 all the time, so that the circular groove 120 is communicated with the sealed cavity 210 sequentially through the first opening, the second inclined channel 160, the third opening, the groove 240, the first inclined channel 250 and the first inclined channel 250.
The annular channel 120 on one side of the first opening is sealed by a baffle plate 121, the annular channel 120 on the other side of the baffle plate 121 is provided with a second opening 122, the second opening 122 is opened outwards, and the calibers of the first opening and the second opening 122 are smaller than the inner diameter of the annular channel 120.
A plurality of steel balls 130 are slidably arranged in the circular ring-shaped channel 120 on the opposite side of the first opening, the diameter of each steel ball 130 is consistent with that of the circular ring-shaped channel 120, the steel balls 130 are continuously arranged, a reading head 140 is fixedly sleeved on the periphery of the skirt edge 110 on the opposite side of the first opening, the reading head 140 is conveniently installed due to the protruding arrangement of the skirt edge 110, and the reading head 140 is ensured to be enveloped on the periphery of the circular ring-shaped channel 120.
The reading head 140 is connected with a monitoring device, and the steel ball 130 moves relatively in a channel inside the reading head 140.
In this embodiment, the diameter of the extension shaft 510 is not less than 5 times of the diameter of the longitudinal section of the circular ring-shaped channel 120, and the diameter of the extension shaft 510 may be made larger as much as possible because when the crankshaft 500 axially moves, the extension shaft 510 is driven to move, the amount of change of the pressure in the sealed cavity 210 is determined by the axial movement amount of the extension shaft 510, and the larger the diameter of the extension shaft 510 is, the larger the amount of change of the air pressure is, the larger the monitoring amount is, and the higher the monitoring accuracy of the position movement is.
A lubricant is arranged on the inner wall of the circular ring-shaped channel 120, and the periphery of the longitudinal section of the steel ball 130 is attached to the inner wall of the circular ring-shaped channel 120 to slide; the radian of the connected body of the steel ball 130 is half of the circumference of the circular ring-shaped channel 120, and in an initial state, the steel ball 130 is symmetrically distributed in the circular ring-shaped channel 120 at the opposite side of the first opening.
When the closed cavity is empty, the closed cavity enters the circular ring-shaped channel 120 from the first opening through the first inclined channel 250, and contacts outward from the second opening 122 after passing through the whole circular ring-shaped channel 120 for a circle.
A plurality of steel balls 130 are slidably arranged in the circular ring-shaped channel 120 on the opposite side of the first opening, and the diameter of each steel ball 130 is consistent with that of the circular ring-shaped channel 120, so that the steel balls 130 are prevented from leaking out of the opening. The steel balls 130 are continuously arranged, so that the steel balls 130 synchronously slide in the circular ring-shaped channel 120, the lubricant is arranged on the inner wall of the circular ring-shaped channel 120 to increase the lubricity of the contact surface of the steel balls 130 and the inner wall of the circular ring-shaped channel 120, the steel balls 130 can conveniently move in the circular ring-shaped channel 120, the moving resistance is reduced, and meanwhile, the sealing performance between the steel balls 130 and the inner wall of the circular ring-shaped channel 120 can be increased, namely, the second opening 122 of the circular ring-shaped channel 120 is effectively sealed through the steel balls 130, and the influence on the gas leakage caused by the contact surface of the steel balls 130 and the inner wall of the circular ring-shaped channel 120 on the airtight of the closed cavity and the circular ring-shaped channel 120 is avoided.
The radian of the connected body of the steel ball 130 is half of the circumference of the circular ring-shaped channel 120, and in an initial state, the steel ball 130 is symmetrically distributed in the circular ring-shaped channel 120 at the opposite side of the first opening, and when the crankshaft 500 moves to the second side in the axial direction to cause the air pressure of the closed cavity to be reduced, the steel ball 130 moves towards the first opening; when the crankshaft 500 moves toward the first side in the axial direction to increase the air pressure in the sealed chamber, the steel ball 130 moves toward the second opening 122.
When the air pressure in the sealed cavity changes due to the axial movement of the crankshaft 500, the steel ball 130 can be driven to move back and forth in the annular channel 120 to offset the whole air pressure change in the sealed cavity, that is, the air pressure change generated by the movement of the steel ball 130 is consistent with the air pressure change in the sealed cavity caused by the axial movement of the crankshaft 500, and at this time, because the inner diameter of the annular channel 120 is fixed and known, the axial movement of the crankshaft 500 can be monitored by monitoring the angular displacement of the steel ball 130.
In order to accurately measure the angular displacement of the steel ball 130, a reading head 140 is fixedly sleeved on the periphery of the skirt 250 on the opposite side of the first opening, and the steel ball 130 moves relatively in a channel on the inner side of the reading head 140. The circular ring-shaped channel 120, the steel ball 130 and the reading head 140 form an angular displacement ball grid displacement measuring system, and an angular displacement ball grid ruler is used for accurately detecting the crankshaft displacement, and the measuring accuracy can reach the micron level; along with the axial movement of the crankshaft 500, the steel ball 130 is driven to move relatively inside the reading head 140 to generate relative displacement, the reading head 140 is connected with a monitoring device to monitor the angular displacement of the steel ball 130 in real time, and finally, the real-time accurate measurement of the axial movement of the crankshaft 500 is completed.
In the above technical solution, in order to improve the measurement accuracy of the axial movement amount of the crankshaft 500, the inner diameter ratio of the circular ring-shaped channel 120 is designed, specifically, the diameter of the crankshaft 500 is not less than 5 times of the diameter of the longitudinal section of the circular ring-shaped channel 120, and the diameter of the extension shaft 510 can be made as large as possible, because when the crankshaft 500 axially moves, the extension shaft 510 is driven to move, and the axial movement amount of the extension shaft 510 determines the variation amount of the pressure in the sealed cavity 210. That is, when the axial movement of the crankshaft 500 causes the air pressure in the closed cavity to change, the angular displacement of the steel ball 130 in the annular channel 120 is more than 20 times of the axial displacement of the crankshaft 500, so that the axial displacement of the crankshaft 500 is effectively amplified to accurately measure and monitor the angular displacement, and when the measured angular displacement of the steel ball 130 exceeds a set threshold, early warning is timely sent out to avoid faults.
The shaft hole 310 extends for a certain distance, so that the contact distance and the contact area between the extension shaft 510 and the shaft hole 310 at the position are increased, the sealing performance is improved on the contact surface through grease, the movement of the extension shaft is timely realized, and the sealing performance of the sealed cavity can be ensured.
According to the invention, the angular displacement ball grid ruler measuring system is built by utilizing the self structure of the diesel engine cylinder body, the crankshaft displacement is accurately detected through the angular displacement ball grid ruler, and the measuring accuracy can reach the micron level; meanwhile, the volume change caused by the axial movement of the crankshaft is amplified through the scaling of the measured volume, and the axial displacement of the crankshaft is measured through measuring the angular displacement after the volume change stroke is amplified, so that the measurement precision of the axial displacement of the crankshaft is further improved; furthermore, the axial displacement of the crankshaft is monitored remotely, early warning is timely carried out, faults caused by the displacement of the crankshaft are avoided, and the reliability of stable operation of the diesel engine is improved.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable to various fields of endeavor for which the invention may be embodied with additional modifications as would be readily apparent to those skilled in the art, and the invention is therefore not limited to the details shown and described herein without departing from the general concept defined by the claims and their equivalents.
Claims (10)
1. An intelligent device for monitoring the state of a diesel engine in real time is characterized by comprising:
the diesel engine cylinder body is internally provided with a closed cavity for accommodating a crankshaft, and two sides of the crankshaft are rotatably arranged in the closed cavity through bearings;
the sealing cover of the first end cover is arranged at the axial first end of the diesel engine cylinder body, the periphery of the first end cover is provided with a skirt edge, the skirt edge protrudes out of the periphery of the diesel engine cylinder body for a certain distance, and an annular channel is formed in the skirt edge;
the second end cover is hermetically covered at the axial second end of the diesel engine cylinder body;
a first inclined channel communicated with the closed cavity is arranged in the side wall of the diesel engine cylinder in a penetrating manner, a first opening is formed in the inner side end of the circular ring-shaped channel, the first inclined channel is communicated with the circular ring-shaped channel through the first opening, the circular ring-shaped channel on one side of the first opening is sealed by a baffle, a second opening is formed in the circular ring-shaped channel on the other side of the baffle, the second opening is opened outwards, and the calibers of the first opening and the second opening are smaller than the inner diameter of the circular ring-shaped channel;
a plurality of steel balls are arranged in the annular channel on the opposite side of the first opening in a sliding mode, the diameter of each steel ball is consistent with that of the annular channel, the steel balls are arranged continuously, a reading head is fixedly sleeved on the periphery of the skirt edge on the opposite side of the first opening and connected with a monitoring device, and the steel balls move in the channel on the inner side of the reading head relatively.
2. The intelligent device for monitoring the state of the diesel engine in real time as claimed in claim 1, wherein the first end cover is installed on a side wall of the first axial end of the diesel engine cylinder, a first circular limiting protrusion is arranged on an inner side wall of the first end cover, a first circular step is formed on an inner circumferential wall of the first axial end of the diesel engine cylinder, and an outer diameter of the first circular limiting protrusion is the same as an outer diameter of the first circular step.
3. An intelligent device for monitoring the state of a diesel engine in real time as claimed in claim 2, wherein a second circular limiting protrusion is arranged on the periphery of the axial first end of the crankshaft, the outer diameter of the second circular limiting protrusion is between the inner diameter of the first circular limiting protrusion and the outer diameter of the crankshaft, and a first bearing is arranged on the periphery of the axial first end of the crankshaft.
4. The intelligent device for monitoring the state of the diesel engine in real time according to claim 3, wherein an axial first end of the first bearing is limited by the first circular limiting protrusion and the second circular limiting protrusion, an axial second end of the first bearing is installed on the first circular step, the outer periphery of the first bearing is attached to the inner peripheral wall of the first circular step, the inner periphery of the first bearing is attached to the side wall of the crankshaft, and the inner periphery and the outer periphery of the first bearing are sealed with corresponding contact surfaces through grease.
5. An intelligent device for monitoring the state of a diesel engine in real time as claimed in claim 4, wherein the second end cover is installed on the side wall of the second end of the cylinder body in the axial direction, a third circular limiting protrusion is arranged on the inner side wall of the second end cover, a second circular step is arranged on the inner peripheral wall of the second end of the cylinder body in the axial direction, and the outer diameter of the third circular limiting protrusion is the same as the outer diameter of the second circular step.
6. An intelligent device for monitoring the state of a diesel engine in real time as recited in claim 5, wherein a circular limiting disc is disposed on the outer periphery of the second axial end of the crankshaft, the diameter of the circular limiting disc is larger than that of the crankshaft, and a second bearing is disposed on the outer periphery of the second axial end of the crankshaft.
7. The intelligent device for monitoring the state of the diesel engine in real time according to claim 6, wherein an axial second end of the second bearing is limited by the third circular limiting protrusion and the circular limiting disc, an axial first end of the second bearing is installed on the second circular step, an outer periphery of the second bearing is attached to an inner peripheral wall of the second circular step, an inner periphery of the second bearing is attached to a side wall of the crankshaft, and the inner periphery and the outer periphery of the second bearing are sealed with corresponding contact surfaces through grease.
8. An intelligent device for monitoring the state of a diesel engine in real time according to claim 7, wherein an extension shaft extends from the second axial end of the crankshaft, a shaft hole is formed in the center of the second end cover in a penetrating manner, the extension shaft extends out of the shaft hole, the circular limiting disc is detachably mounted on the extension shaft at the second axial end of the crankshaft, and the extension shaft and the inner peripheral wall of the shaft hole are arranged in a sealing and rotating manner;
the diameter of the extension shaft is smaller than that of the crankshaft, the extension shaft penetrates through the shaft hole and is led out outwards, and the leading-out end of the extension shaft is linked with the camshaft through a synchronous belt to output power outwards;
the diameter of the extension shaft is not less than 5 times of the diameter of the longitudinal section of the circular ring-shaped channel.
9. The intelligent device for monitoring the state of the diesel engine in real time as claimed in claim 8, wherein the inner wall of the circular ring-shaped channel is provided with a lubricant, and the periphery of the longitudinal section of the steel ball is attached to the inner wall of the circular ring-shaped channel to slide; the radian of the connected steel balls is half of the perimeter of the circular ring-shaped channel, and the steel balls are symmetrically distributed in the circular ring-shaped channel on the opposite side of the first opening in an initial state.
10. The intelligent device for monitoring the state of the diesel engine in real time as claimed in claim 9, wherein a circular groove is formed in a side wall of a first axial end of the cylinder body of the diesel engine, an inner side of the circular groove is communicated with the first inclined channel, an outer side of the circular groove is closed by an inner side wall of the first end cover, a second inclined channel is formed in the skirt edge, a first end of the second inclined channel is communicated with the circular groove, a third opening is formed in the inner side wall of the first end cover, the third opening is in butt joint with the circular groove, and a second end of the second inclined channel is communicated with the third opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211184018.2A CN115680878A (en) | 2022-09-27 | 2022-09-27 | Intelligent device for monitoring state of diesel engine in real time |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211184018.2A CN115680878A (en) | 2022-09-27 | 2022-09-27 | Intelligent device for monitoring state of diesel engine in real time |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115680878A true CN115680878A (en) | 2023-02-03 |
Family
ID=85061713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211184018.2A Pending CN115680878A (en) | 2022-09-27 | 2022-09-27 | Intelligent device for monitoring state of diesel engine in real time |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115680878A (en) |
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2022
- 2022-09-27 CN CN202211184018.2A patent/CN115680878A/en active Pending
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