Autonomous maintenance method for marine main engine oil mist monitoring system

Abstract

The invention provides an autonomous maintenance method for a marine main engine oil mist monitoring system, and relates to the field of oil mist monitoring devices.The autonomous maintenance mechanism for the marine main engine oil mist monitoring system comprises two air pipes and a monitoring bin, the left end and the right end of the monitoring bin are in butt joint communication with the two air pipes respectively, and the upper side and the lower side of the monitoring bin are symmetrically connected with processing bins; a steam removing assembly is arranged in the air pipe located on the left side, rolling shafts are symmetrically hinged to the upper side and the lower side of the monitoring bin, and the whole rolling shafts are covered with the processing bin. The marine main engine oil mist monitoring system autonomous maintenance mechanism is provided with an air pipe, a monitoring bin and a processing bin, the monitoring bin is provided with a rotatable rolling shaft, an oil mist concentration detection assembly is installed on the side edge of the rolling shaft, a first hose, a second hose and a wiping sponge are arranged in the processing bin, the oil mist concentration detection assembly is wiped and sprayed with high-pressure air flow, and the oil mist concentration detection assembly can be cleaned. And oil stains of the oil mist concentration detection assembly are periodically removed. Therefore, the effect of autonomous maintenance and repair is achieved, and the possibility of high false alarm rate caused by oil contamination interference is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of oil mist monitoring devices, in particular to a self-maintenance method for a marine main engine oil mist monitoring system. BACKGROUND

[0002] Marine main engine oil mist is a product of the engine during operation, which is composed of tiny oil droplets and steam. If these oil mists are not treated in time, accidents may occur, causing the engine to malfunction or even explode. Therefore, an oil mist monitoring system is set up.

[0003] The bulb bow is the part protruding below the waterline at the bow, with a large internal space that is often not fully utilized. Secondly, the traditional placement of the oil mist monitoring system in the engine room is in a harsh environment (high temperature, high humidity, and large vibration), and the sensor is easily contaminated or damaged. Therefore, a separate space is set up inside the bulb bow to create a clean, constant temperature and humidity, and low vibration cabin, and the oil mist monitoring system is placed in the cabin.

[0004] Traditional oil detection. The oil mist concentration in the main engine crankcase is detected by a sensor. When the oil mist concentration exceeds the threshold, the system automatically triggers an audible and visual alarm and links to the main engine speed reduction / stop. The existing shortcomings are: ordinary sensors are easily disturbed by oil and water vapor, resulting in high false alarm rate. Therefore, a new type of oil pollution monitoring component is set up to solve the above problems. SUMMARY

[0005] (I) Technical problems solved In view of the deficiencies of the prior art, the present application provides a self-maintenance method for a marine main engine oil mist monitoring system, which solves the problems raised in the background art.

[0006] (II) Technical solutions To achieve the above purpose, the present application is implemented by the following technical solutions: a self-maintenance mechanism for a marine main engine oil mist monitoring system, comprising two air pipes and a monitoring warehouse, the left and right ends of the monitoring warehouse are respectively connected to the two air pipes, the upper and lower sides of the monitoring warehouse are symmetrically connected to a processing warehouse, a steam removal component is arranged in the left air pipe, the monitoring warehouse is symmetrically hinged with a roller shaft on the upper and lower sides, the processing warehouse covers the entire roller shaft, a groove is formed on one side of the roller shaft, and an oil mist concentration detection component is installed in the groove.

[0007] The oil mist concentration detection component can emit red light. The oil mist concentration detection component comprises a transparent glass shell, a grating module and a light sensing unit. The grating module is installed in the groove, the light sensing unit is distributed around the grating module, the glass shell is installed in the groove, and the grating module and the light sensing unit are covered by the glass shell. The light sensing unit is used to sense the radiation of the other oil mist concentration detection component.

[0008] The cleaning assembly is arranged in the processing chamber and used for cleaning oil stains on the surface of the glass shell cover.

[0009] Preferably, the cleaning assembly comprises a small motor, a screw rod, an electric push rod, a spring and a pressure sensing unit, the small motor is arranged on the right side of the inner wall of the processing chamber, the pressure sensing unit is arranged on the left side of the inner wall of the processing chamber, one end of the screw rod is connected with the transmission shaft of the small motor, the other end of the screw rod is pivotally connected with the pressure sensing unit, the screw rod is screwed through the upper end of the electric push rod, the spring is arranged between the pressure sensing unit and the electric push rod, and the lower end of the electric push rod is connected with a wiping sponge.

[0010] Preferably, the upper end of the electric push rod is upwardly extended and mounted with a sliding block, the top of the inner wall of the processing chamber is arranged with a sliding rail from left to right, and the sliding block is in sliding fit with the sliding rail.

[0011] Preferably, the outside of the processing chamber is connected with a hose one in a butt joint mode, the outside of the processing chamber is mounted with a hose two, the working end of the hose two extends into the processing chamber and faces the grating module, the working end of the hose two is wrapped with a heating ring, a large motor is arranged at the connection position of the processing chamber and the monitoring chamber, and the transmission shaft of the large motor is connected with the end of the roller.

[0012] Preferably, the air pipe is internally arranged with a filter screen, two fans and a filter ring, the filter screen is arranged on the left side of the upper fan, and the filter ring is arranged between the two fans.

[0013] Preferably, the filter ring comprises a one-way membrane, a PDVB super-hydrophobic composite membrane and a ring, the ring is connected with the inner wall of the air pipe, the one-way membrane is arranged on the left side of the ring, the PDVB super-hydrophobic composite membrane is arranged on the right side of the ring, the filter ring is arranged between the two fans, and the one-way membrane, the PDVB super-hydrophobic composite membrane and the ring cooperatively form a cavity for intercepting water vapor.

[0014] Preferably, the top of the air pipe is connected with a small air pump, the small air pump extends into the cavity of the filter ring and is connected in a butt joint mode, the bottom of the air pipe is arranged with a box body which is directly below the filter ring, the bottom of the filter ring is connected with a dropper, the dropper vertically extends into the box body, the dropper body is in sliding fit with a pull force sensing unit which is movable up and down, and the working end of the pull force sensing unit is connected with the inner wall top of the box body through an elastic rope.

[0015] Preferably, a trigger switch is arranged in the air pipe and located on the left side of the filter ring, and the trigger switch is spaced apart from the filter ring by 0.2 cm.

[0016] A use method of a marine main engine oil mist monitoring system self-maintenance mechanism Step one, the oil mist sequentially passes through the filter screen, the filter ring and the processing chamber from left to right, the grating module emits a light line grating, the light sensing unit senses the light intensity, and the surface of the grating module is covered with an oil stain layer after long-term use. At this time, the large motor drives the roller to rotate by 180 degrees, and the groove of the roller is turned into the processing chamber.

[0017] Step two, then, the small motor driven screw rotation, the electric push rod to the left and squeeze the spring, when the pressure sensor unit measured value reaches the preset value, the electric push rod moves to the grating module is directly above, wiping sponge and grating module glass shell cover joint.

[0018] Step three, then, the high pressure air flow is transported into the hose two, through the hose two to the grating module glass shell cover jet high pressure air flow, to achieve the purpose of periodic removal of oil stains.

[0019] Step four, at the same time, the filter ring forms water droplets after intercepting water vapor inside the box, when the box overflows, the one-way membrane of the filter ring protrudes slightly and contacts the dropper, and the small air pump is started to drain the accumulated water.

[0020] (Three) beneficial effects The application provides a marine main engine oil mist monitoring system self-maintenance method. The following beneficial effects are provided: 1. The marine main engine oil mist monitoring system self-maintenance mechanism, which is provided with an air pipe, a monitoring bin, and a processing bin, the monitoring bin is provided with a rotatable roller shaft, the roller shaft is provided with an oil mist concentration detection assembly on the side, and the processing bin is provided with a hose one, a hose two, and a wiping sponge, the oil mist concentration detection assembly is wiped and high-pressure air flow is sprayed, and the oil stains on the oil mist concentration detection assembly are periodically removed. Thus, the self-maintenance and repair effect is achieved, and the possibility of high false alarm rate caused by oil stains is reduced.

[0021] 2. The marine main engine oil mist monitoring system self-maintenance mechanism, which is provided with a filter ring in the air pipe, the filter ring is composed of a one-way membrane, a ring, and a PDVB super-hydrophobic composite membrane, forms an isolated cavity, and is used for separating water vapor and small oil droplets in the oil mist, reduces water vapor interference, and reduces the false alarm rate. A small air pump, a tension sensing unit, an elastic rope, and a trigger switch are further provided, which are used for detecting the water accumulation degree in the filter ring and timely draining the accumulated water. DETAILED DESCRIPTION

[0022] Figure 1 The figure is a structural schematic diagram of the application; Figure 2 The figure is a structural working reference diagram of the application; Figure 3 The figure is another working reference diagram of the application structure; Figure 4 The figure is a structural working reference diagram of the application; Figure 2 The figure is an enlarged view of structure A in the application.

[0023] In the diagram: 1. Air pipe, 11. Filter screen, 12. Fan, 2. Monitoring chamber, 3. Processing chamber, 31. Hose 1, 32. Hose 2, 321. Heating ring, 33. Large motor, 34. Small motor, 35. Screw, 36. Electric actuator, 37. Spring, 38. Pressure sensing unit, 39. Wiping sponge, 4. Filter ring, 41. Small air pump, 42. Trigger switch, 43. Dropper, 5. Box body, 51. Tension sensing unit, 52. Elastic rope, 6. Roller, 7. Grating module. Detailed Implementation

[0024] This invention provides an autonomous maintenance mechanism for a marine main engine oil mist monitoring system, such as... Figures 1-4 As shown, it includes two air pipes 1 and a monitoring chamber 2. The left and right ends of the monitoring chamber 2 are fixedly installed to the two air pipes 1 respectively. Processing chambers 3 are symmetrically fixedly installed on the upper and lower sides of the monitoring chamber 2. A vapor removal component is installed inside the air pipe 1 on the left side. Rollers 6 are symmetrically hinged on the upper and lower sides of the monitoring chamber 2. The processing chamber 3 covers the entire roller 6. A groove is opened on one side of the roller 6, and an oil mist concentration detection component is fixedly installed in the groove. During operation, as shown in the attached diagram... Figure 3 As shown, the two grooves are aligned with each other.

[0025] The oil mist concentration detection component emits red light and includes a transparent glass housing, a grating module 7, and photosensitive units. The grating module 7 is fixedly installed within a recess, and the photosensitive units are fixedly installed in a ring around the grating module 7. The glass housing is fixedly installed within the recess, enclosing the grating module 7 and the photosensitive units for protection.

[0026] Combined with appendix Figure 3 During monitoring, the light emitted downwards from the upper grating module 7 is received by the lower photosensor unit, which then uses this unit to sense the rays emitted by the oil mist concentration detection component on the other side. Working principle: The light emitted from the grating module 7 is received by the photosensor unit on the other side. As the oil mist concentration increases, the content of small oil droplets increases, and more light is scattered or absorbed by the particles, resulting in a significant decrease in the intensity of transmitted light. The photosensor unit senses the intensity of the light to determine the oil mist concentration.

[0027] The processing chamber 3 is equipped with a cleaning component to remove oil stains from the surface of the glass cover. Over time, an oil layer forms on the surface of the glass cover. This thickening oil layer can prevent light from penetrating the glass cover, preventing light from being received properly on the other side. Therefore, a cleaning component is included. The aforementioned light-sensing unit uses conventional technology; therefore, its specific structure and circuit layout will not be described in detail.

[0028] The cleaning assembly includes a small motor 34, a screw 35, an electric actuator 36, a spring 37, and a pressure sensing unit 38. The small motor 34 is fixedly installed on the right side of the inner wall of the processing chamber 3, and the pressure sensing unit 38 is fixedly installed on the left side of the inner wall of the processing chamber 3. One end of the screw 35 is welded to the drive shaft of the small motor 34, and the other end of the screw 35 is pivotally connected to the pressure sensing unit 38. The screw 35 is threaded through the upper end of the electric actuator 36. The spring 37 is fixedly installed between the pressure sensing unit 38 and the electric actuator 36. A small motor is fixedly installed at the lower end of the electric actuator 36, and the drive shaft of the small motor is vertically downward and fixedly installed with a wiping sponge 39.

[0029] During operation, by moving the electric actuator 36 directly above the grating module 7, the actuator 36 extends to its maximum length, bringing the wiping sponge 39 into contact with the glass housing. A small motor then drives the wiping sponge 39 to rotate, achieving the purpose of wiping away stains. This facilitates regular maintenance and reduces operational steps, requiring only the replacement of the wiping sponge 39.

[0030] The upper end of the electric actuator 36 extends upward and is fixedly mounted with a slider. A slide rail is fixedly mounted from left to right on the top of the inner wall of the processing chamber 3, and the slider slides in conjunction with the slide rail. Since this is a conventional technique, it is not described in detail or shown in the accompanying drawings.

[0031] A first hose 31 is connected to the outside of the processing chamber 3. A second hose 32 is fixedly installed on the outside of the processing chamber 3. The working end of the second hose 32 extends into the processing chamber 3 and faces the grating module 7. A heating ring 321 is fixedly installed around the working end of the second hose 32. A large motor 33 is fixedly installed at the connection between the processing chamber 3 and the monitoring chamber 2. The drive shaft of the large motor 33 is connected to the end of the roller 6. The first hose 31 is used for exhaust, and the second hose 32 is used for gas supply.

[0032] The large motor 33 drives the roller 6 to rotate, thereby adjusting the orientation of the grating module 7. Sealing rubber is fixedly bonded to the contact areas between the processing chamber 3, the monitoring chamber 2, and the surface of the roller 6. The sealing rubber, in contact with the outer surface of the roller 6, prevents oil mist leakage during normal monitoring or maintenance.

[0033] A filter screen 11, two fans 12, and a filter ring 4 are fixedly installed inside the air duct 1. The filter screen 11 is located to the left of the fans 12, and the filter ring 4 is located between the two fans 12. The filter screen 11 is used to clean dust, and the filter ring 4 is used to filter out water vapor, reducing the impact of water vapor on the operation of the monitoring chamber 2.

[0034] The filter ring 4 consists of a one-way membrane, a PDVB superhydrophobic composite membrane, and a ring. The outer side of the ring is fixedly embedded in the inner wall of the air tube 1. The one-way membrane is installed on the left side of the ring, and the PDVB superhydrophobic composite membrane is installed on the right side of the ring. The filter ring 4 is located between the two fans 12. The one-way membrane, the PDVB superhydrophobic composite membrane, and the ring together form a cavity to intercept water vapor. The one-way membrane only allows oil mist to pass through from left to right, while the PDVB superhydrophobic composite membrane is used to isolate water vapor. Small oil droplets in the oil mist can pass through the PDVB superhydrophobic composite membrane smoothly.

[0035] A small air pump 41 is fixedly installed at the top of the air tube 1. The working end of the small air pump 41 extends into the cavity of the filter ring 4 and is connected. An electronic valve is fixedly installed at the working end of the small air pump, and the lower end of the solenoid valve is connected to the cavity of the filter ring 4.

[0036] A box 5 is welded to the bottom of the trachea 1 directly below the filter ring 4. A dropper 43 is fixedly installed at the bottom of the filter ring 4, and the lower end of the dropper 43 extends vertically into the box 5.

[0037] The dropper 43 has a sliding contact with a tension sensing unit 51 that can move up and down. An elastic rope 52 is fixedly tied between the working end of the tension sensing unit 51 and the top of the inner wall of the box 5. An electronic valve is also fixedly installed at the lower end of the box 5.

[0038] A trigger switch 42 is fixedly installed inside the trachea 1 and on the left side of the filter ring 4, with a 0.2cm gap between the trigger switch 42 and the filter ring 4.

[0039] Working Principle: Initially, the electronic valve is closed, and water vapor is trapped inside the filter ring 4, gradually forming condensation. This condensation drips down the dropper 43 into the housing 5. As the condensation increases, the force sensor unit 51 rises due to buoyancy, and its reading decreases. When the condensation drains from the housing 5, the force sensor unit 51 returns to its lowest position, and simultaneously, the one-way membrane slightly bulges outward, contacting the trigger switch 42. The trigger switch 42 closes, and the force sensor unit 51 sends its reading back to the external computer terminal. The computer terminal then controls the electronic valve to open and the air pump 41 to inject air into the filter ring 4. This instantly forces the condensation out, after which the electronic valve closes again.

[0040] A method for using a self-maintenance mechanism for a marine main engine oil mist monitoring system: Step 1: The oil mist passes through the filter screen 11, filter ring 4 and treatment chamber 3 from left to right. The grating module 7 emits a light-shaped grating. The light sensing unit senses the intensity of the light. After long-term use, the surface of the grating module 7 is covered with an oil stain layer. At this time, the large motor 33 drives the roller 6 to rotate 180 degrees, and the groove of the roller 6 is rotated into the treatment chamber 3.

[0041] Step two, next, the small motor 34 drives the screw 35 to rotate, causing the electric push rod 36 to move to the left and squeeze the spring 37. When the pressure sensing unit 38 measures the value to reach the preset value, the electric push rod 36 moves to directly above the grating module 7 and wipes the sponge 39 at the junction with the glass cover of the grating module 7.

[0042] Step three, next, high-pressure airflow is delivered into hose 2 32, and high-pressure airflow is sprayed onto the glass cover of grating module 7 through hose 2 32 to achieve the purpose of periodically removing oil stains.

[0043] Step four: Simultaneously, after the filter ring 4 intercepts water vapor, water accumulates inside and drips into the box 5. When the box 5 overflows, causing the one-way membrane of the filter ring 4 to slightly protrude and contact the dropper 43, the small air pump 41 is activated to discharge the accumulated water.

[0044] In summary, the autonomous maintenance mechanism of the marine main engine oil mist monitoring system comprises an air pipe 1, a monitoring chamber 2, and a processing chamber 3. The monitoring chamber 2 is equipped with a rotatable roller 6, on the side of which an oil mist concentration detection component is mounted. The processing chamber 3 contains a first hose 31, a second hose 32, and a wiping sponge 39, which periodically clean the oil mist concentration detection component by wiping it and spraying it with high-pressure air. This achieves autonomous maintenance and repair, reducing the possibility of high false alarm rates due to oil contamination.

[0045] Furthermore, a filter ring 4 is installed inside the air tube 1. The filter ring 4 is composed of a one-way membrane, a ring, and a PDVB superhydrophobic composite membrane, forming an isolation cavity to separate water vapor and small oil droplets in the oil mist, thereby reducing water vapor interference and lowering the false alarm rate. A small air pump 41, a tension sensing unit 51, an elastic rope 52, and a trigger switch 42 are also installed to detect the degree of water accumulation inside the filter ring 4 and to drain the accumulated water in a timely manner.

[0046] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A self-maintenance mechanism for a marine main engine oil mist monitoring system, characterized in that: It includes two air pipes (1) and a monitoring chamber (2). The left and right ends of the monitoring chamber (2) are respectively connected to the two air pipes (1). The monitoring chamber (2) is symmetrically connected to the upper and lower sides of the monitoring chamber (3). A steam removal component is provided in the air pipe (1) on the left side. Rollers (6) are symmetrically hinged on the upper and lower sides of the monitoring chamber (2). The processing chamber (3) covers the entire roller (6). A groove is opened on one side of the roller (6), and an oil mist concentration detection component is installed in the groove. The oil mist concentration detection component can emit red light. The oil mist concentration detection component includes a transparent glass shell, a grating module (7) and a photosensitive unit. The grating module (7) is installed in the groove, and the photosensitive unit is distributed around the grating module (7). The glass shell is installed in the groove and covers the grating module (7) and the photosensitive unit. The photosensitive unit is used to sense the rays of the oil mist concentration detection component on the other side. The processing chamber (3) is equipped with a cleaning component, which is used to remove oil stains from the surface of the glass cover.

2. The autonomous maintenance mechanism for a marine main engine oil mist monitoring system according to claim 1, characterized in that: The cleaning assembly includes a small motor (34), a screw (35), an electric push rod (36), a spring (37), and a pressure sensing unit (38). The small motor (34) is located on the right side of the inner wall of the processing chamber (3), and the pressure sensing unit (38) is located on the left side of the inner wall of the processing chamber (3). One end of the screw (35) is connected to the drive shaft of the small motor (34), and the other end of the screw (35) is pivotally connected to the pressure sensing unit (38). The screw (35) is threaded through the upper end of the electric push rod (36). The spring (37) is located between the pressure sensing unit (38) and the electric push rod (36). The lower end of the electric push rod (36) is connected to a wiping sponge (39).

3. The autonomous maintenance mechanism for a marine main engine oil mist monitoring system according to claim 2, characterized in that: The upper end of the electric push rod (36) extends upward and is equipped with a slider. The top of the inner wall of the processing chamber (3) is arranged with a slide rail from left to right, and the slider slides in cooperation with the slide rail.

4. The autonomous maintenance mechanism for a marine main engine oil mist monitoring system according to claim 3, characterized in that: The processing chamber (3) is connected to a hose 1 (31) on the outside. A hose 2 (32) is installed on the outside of the processing chamber (3). The working end of the hose 2 (32) extends into the processing chamber (3) and faces the grating module (7). A heating ring (321) is wrapped around the working end of the hose 2 (32). A large motor (33) is provided at the connection between the processing chamber (3) and the monitoring chamber (2). The drive shaft of the large motor (33) is connected to the end of the roller (6).

5. The autonomous maintenance mechanism for a marine main engine oil mist monitoring system according to claim 4, characterized in that: The air duct (1) is equipped with a filter screen (11), two fans (12) and a filter ring (4). The filter screen (11) is located to the left of the air duct fan (12), and the filter ring (4) is located between the two fans (12).

6. The autonomous maintenance mechanism for a marine main engine oil mist monitoring system according to claim 5, characterized in that: The filter ring (4) consists of two PDVB superhydrophobic composite membranes and a ring. The outer side of the ring is connected to the inner wall of the air pipe (1). The one-way membrane is installed on the left side of the ring, and the PDVB superhydrophobic composite membrane is installed on the right side of the ring. The filter ring (4) is located between the two fans (12). The one-way membrane, the PDVB superhydrophobic composite membrane and the ring work together to form a cavity that intercepts water vapor.

7. The autonomous maintenance mechanism for a marine main engine oil mist monitoring system according to claim 6, characterized in that: The top of the air tube (1) is connected to a small air pump (41), which extends into the cavity of the filter ring (4) and connects with it. The bottom of the air tube (1) is provided with a box (5) directly below the filter ring (4). The bottom of the filter ring (4) is connected to a dropper (43), which extends vertically into the box (5). The dropper (43) is slidably fitted with a tension sensing unit (51) that can move up and down. An elastic rope (52) is connected between the working end of the tension sensing unit (51) and the top of the inner wall of the box (5).

8. The autonomous maintenance mechanism for a marine main engine oil mist monitoring system according to claim 7, characterized in that: A trigger switch (42) is provided inside the trachea (1) and to the left of the filter ring (4), with a 0.2cm gap between the trigger switch (42) and the filter ring (4).

9. The method of using the autonomous maintenance mechanism of the marine main engine oil mist monitoring system according to claim 8: Step 1: The oil mist passes through the filter screen (11), filter ring (4) and treatment chamber (3) from left to right. The grating module (7) emits a light-shaped grating. The light sensing unit senses the intensity of the light. After long-term use, the surface of the grating module (7) is covered with an oil stain layer. At this time, the large motor (33) drives the roller (6) to rotate 180 degrees, and the groove of the roller (6) is rotated into the treatment chamber (3). Step two, next, the small motor (34) drives the screw (35) to rotate, causing the electric push rod (36) to move to the left and squeeze the spring (37). When the pressure sensing unit (38) measures the value to reach the preset value, the electric push rod (36) moves to the top of the grating module (7) and the wiping sponge (39) connects with the glass cover of the grating module (7). Step 3: Next, high-pressure airflow is delivered into hose 2 (32), and high-pressure airflow is sprayed onto the glass cover of the grating module (7) through hose 2 (32) to achieve the purpose of periodically removing oil stains; Step four: At the same time, after the filter ring (4) intercepts water vapor, water droplets are formed inside and fall into the box (5). When the box (5) overflows, the one-way membrane of the filter ring (4) slightly protrudes and contacts the dropper (43). Then, the small air pump (41) is started to discharge the water.

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