High-temperature and high-pressure automatic cleaning equipment for ship engine cylinder sleeve

Abstract

The invention relates to high-temperature and high-pressure automatic cleaning equipment for a ship engine cylinder sleeve, which comprises a track, an electric flat car, an adjustable idler frame, a fixed idler frame and a gear set, and can solve the problems that large-area injection is generally carried out in the prior art, but the cost of large-area injection equipment is high, and the injection areas are easy to overlap, so that the cleaning efficiency is high. The problems that in the prior art, due to the fact that spraying is not conducted, resources are wasted, partial areas are inclined without spraying, air cylinder sleeves are not cleaned comprehensively, and high-temperature and high-pressure cleaning relates to production safety are solved.

Description

Technical Field

[0001] The present invention relates to the technical fields of high-temperature and high-pressure cleaning and automatic control. More specifically, it relates to a high-temperature and high-pressure automatic cleaning device for the cylinder liner of a marine engine part. Background Art

[0002] The material of the cylinder liner, a key part of a high-power marine engine, is cast iron Tarkall-A. To control the pollution of the engine lubricating oil and the wear of the piston ring caused by micro-particle dust, loose iron particles of the casting, and oil stains that are difficult to clean in the gaps between the loose iron particles during the factory test of the engine, the cylinder liner completed by precision machining needs to be cleaned at high temperature (cleaning fluid temperature ≥ 90°C) and high pressure (10 MPa) before installation to meet the requirement that the residual dispersion of loose iron particles within the inner hole area of 9×10 mm² of the cylinder liner is ≤ 1%, with an average of ≤ 0.5% (after the cylinder liner is cleaned, yellow silicon-based rubbings are taken at different positions of the inner hole of the cylinder liner, and then the rubbings are imaged and detected with a microscope at ≥ 20 times magnification). The minimum inner hole diameter of the existing engine cylinder liner is Φ260 mm, and the total length is 1127 mm. The maximum inner hole diameter is Φ950 mm, and the total length is 3760 mm. Usually, large-area spraying is carried out, but the equipment cost of large-area spraying is high, and the spraying areas are prone to overlap, resulting in waste of resources. In some areas, there will also be unsprayed and inclined situations, resulting in incomplete cleaning of the cylinder liner. Moreover, high-temperature (cleaning fluid temperature ≥ 90°C) and high-pressure (10 MPa) cleaning involves production safety. Based on this, the present application designs a high-temperature and high-pressure automatic cleaning device for the cylinder liner of a marine engine part. Summary of the Invention

[0003] The prior art requires that the overall axis of the cylinder liner be horizontal after loading, which may increase the skill requirements for operation; the water tank is designed with a liquid level switch and a temperature control switch to control the safe cleaning water level of the water tank and the temperature of the cleaning fluid. However, due to long-term cleaning and the impact of high-flow circulating fluid, the liquid level switch may have a float failure, affecting the response timeliness of the water pump. During the cleaning process, the temperature of the cleaning fluid dissipates significantly over a large area (especially when the room temperature is low), and when the single-piece cleaning time is too long, the water temperature control of the circulating cleaning fluid may not meet the design water temperature requirement of ≥ 90°C; when the distance between the high-pressure nozzle and the surface of the cylinder liner is too far, the pressure loss of the cleaning fluid will increase, reducing the cleaning efficiency; the motors of the driving worm gear reducer and the electric flat car are immersed in high-temperature liquid and washed by high-pressure liquid during the cleaning work, involving the need for anti-electric leakage.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A high-temperature and high-pressure automatic cleaning equipment for a marine engine cylinder liner. An electric flat car is slidably arranged on a track, and an adjustable supporting roller frame and a fixed supporting roller frame are successively placed on the electric flat car. The adjustable supporting roller frame includes an adjustable supporting roller frame base, on which supports with adjustable spacing positions are arranged, and a first roller is installed in the arc-shaped groove of the support. The fixed supporting roller frame is symmetrically provided with bases, and two groups of second rollers are rotatably arranged on the bases. The second rollers can support the cylinder liner, and a gear set is arranged on the side wall of the base. The gear set includes a driving gear rotatably arranged at the side wall position of the base. The driving gear drives a driven gear to rotate through a transmission gear, and the driven gear is coaxially connected with the roller.

[0006] As a preferred technical solution of the present invention, the driving gear is connected to a worm gear reducer. The worm gear reducers are connected through a transmission shaft and maintain the same rotational speed. The other side of the worm gear reducer at the rear side is connected to a direction-changing worm gear reducer, and a detachable connection between the direction-changing worm gear reducer and the motor is achieved through a spline flange.

[0007] As a preferred technical solution of the present invention, an inner hole high-pressure spray gun group is arranged at the center of the inner hole of the cylinder liner. A number of groups of linear nozzles are arranged on the inner hole high-pressure spray gun group. One end of the inner hole high-pressure spray gun group is fixed on a first fixed support with adjustable height, and the other end is detachably arranged on a first moving support. An outer circle high-pressure spray gun group is arranged outside the cylinder liner. High-pressure atomizing nozzles are arranged on the outer circle high-pressure spray gun group. One end of the outer circle high-pressure spray gun group is fixed on a second fixed support with adjustable height, and the other end is detachably arranged on a second moving support.

[0008] As a preferred technical solution of the present invention, high-pressure resistant hoses are connected between the outer circle high-pressure spray gun group, the inner hole high-pressure spray gun group and a distribution flange. The distribution flange is connected to one end of an ultra-high pressure plunger pump through a high-pressure resistant main oil pipe, and the other end of the ultra-high pressure plunger pump extends to the bottom of a secondary water tank.

[0009] As a preferred technical solution of the present invention, an electric heater group is arranged inside the secondary water tank. A liquid level switch and a temperature control switch are successively arranged on the secondary water tank. The temperature control switch controls the operation and stop of the electric heater, and the liquid level switch controls the operation and stop of the water pump to maintain the safe capacity of the cleaning liquid in the secondary water tank. The water pump extracts the cleaning liquid from the primary water tank to the secondary water tank according to the signal of the liquid level switch.

[0010] As a preferred technical solution of the present invention, a filter element is designed in the primary water tank.

[0011] In summary, the present application includes the following beneficial technical effects:

[0012] An automatic high-temperature and high-pressure cleaning device for the cylinder liner of a ship engine. This application has no blind spots in the overall high-temperature and high-pressure cleaning of the cylinder liner, and the entire cleaning process is automatically controlled. The temperature of the cleaning liquid and the injection pressure of the cleaning liquid are stably controlled, creating good equipment conditions for obtaining stable and efficient cleaning quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is the first structural schematic diagram of the present invention;

[0014] Figure 2 is the second structural schematic diagram of the present invention;

[0015] Figure 3 is the present invention Figure 2 partial structural schematic diagram.

[0016] Description of reference numerals: 1, track; 2, electric flat car; 3, first moving bracket; 4, second moving bracket; 5, outer circle high-pressure spray gun group; 6, inner hole high-pressure spray gun group; 7, cylinder liner; 8, adjustable supporting roller frame; 9, fixed supporting roller frame; 10, gear group; 11, motor; 12, spline flange; 14, variable-direction worm reducer; 15, worm reducer; 16, transmission shaft; 18, first fixed bracket; 19, second fixed bracket; 20, high-pressure resistant hose; 21, ultra-high pressure plunger pump; 22, temperature control switch; 23, liquid level switch; 24, secondary water tank; 25, electric heater group; 26, water pump; 27, primary water tank; 28, distribution flange; 29, high-pressure resistant main oil pipe; 5-1, high-pressure atomizing nozzle; 6-1, linear nozzle; 8-1, base; 8-2, support; 8-3, first roller; 9-1, base; 9-2, second roller; 10-1, driving gear; 10-2, transmission gear; 10-3, driven gear; 18-1, first rotating handle; 19-1, second rotating handle. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The following further elaborates on this application Figures 1 to 3 in detail with reference to the accompanying drawings.

[0018] As Figures 1 to 3 shown: An automatic high-temperature and high-pressure cleaning device for the cylinder liner of a ship engine includes arranging a track on the concrete floor foundation. The electric flat car 2 is slidably arranged on the track 1 to meet the operation and docking at the loading / unloading position and the cleaning position. The adjustable supporting roller frame 8 and the fixed supporting roller frame 9 are successively placed on the electric flat car 2;

[0019] The adjustable roller support 8 includes an adjustable roller support base 8-1. On the adjustable roller support base 8-1, there are supports 8-2 with adjustable spacing positions. In the arc-shaped groove of the support 8-2, a first roller 8-3 is installed. The height and spacing of the first roller 8-3 can be adjusted to support cylinder liners 7 of different diameter models. The adjustable roller support 8 can move its position on the electric flat car 2 according to the different lengths of the cylinder liners 7 to stably support the cylinder liners 7. The adjustable roller support 8 adjusts the roller spacing according to the height position of different cylinder liners 7 on the fixed roller support 8 to keep the axis line of the cylinder liner 7 horizontal.

[0020] On the fixed roller support 9, bases 9-1 are symmetrically arranged. On the bases 9-1, two groups of second rollers 9-2 are rotatably arranged. The second rollers 9-2 can support the cylinder liner 7. A gear set 10 is arranged on the side wall of the base 9-1.

[0021] The gear set 10 includes a driving gear 10-1. The driving gear 10-1 is rotatably arranged at the side wall position of the base 9-1. The driving gear 10-1 drives a driven gear 10-3 to rotate through a transmission gear 10-2. The driven gear 10-3 is coaxially connected with the roller 9-3. The second roller 9-2 supports the cylinder liner 7 and is in direct contact with the outer circle of the cylinder liner 7, thereby driving the cylinder liner 7 to rotate.

[0022] As Figure 3 shown, the driving gear 10-1 is connected to the worm reducer 15. The worm reducers 15 are connected through a transmission shaft 16 and maintain the same rotational speed. On the other side of the worm reducer 15 at the rear side, it is connected to a direction-changing worm reducer 14. The dismountable connection between the direction-changing worm reducer 14 and the motor 11 is realized through a spline flange 12. When the electric flat car 2 reaches the cleaning position, the motor 11 is engaged with the direction-changing worm reducer 14 through the spline flange 12. When the motor 11 starts, after the direction-changing worm reducer 14 realizes speed reduction and direction change, it drives the two symmetrically arranged gear sets 10 to rotate. At the same time, the second rollers 9-2 of the fixed roller support 9 rotate to drive the cylinder liner 7 to rotate.

[0023] As Figure 2 、 Figure 3As shown in the figure, an internal hole high-pressure spray gun group 6 is arranged at the center of the inner hole of the cylinder liner 7. A number of groups of linear nozzles 6-1 are arranged on the internal hole high-pressure spray gun group 6. The linear nozzles 6-1 are vertically upward and have equal spacing. One end of the internal hole high-pressure spray gun group 6 in the linear nozzles 6-1 is fixed on a first fixed bracket 18 with adjustable height. The inside of the first fixed bracket 18 is designed with a trapezoidal screw pair, and there is a first rotating handle 18-1 at the upper end. According to the inner hole center position of the cylinder liner 7 with different diameter models, the first rotating handle 18-1 can adjust the height position of the internal hole high-pressure spray gun group 6 up and down to adjust the distance between the linear nozzles 6-1 and the inner wall of the cylinder liner 7. The first moving bracket 3 correspondingly adjusts the horizontal position and height position to keep all the linear nozzles 6-1 of the internal hole high-pressure spray gun group 6 in the correct position in the inner hole of the cylinder liner 7. The other end of the internal hole high-pressure spray gun group 6 is detachably arranged on the first moving bracket 3. An outer circle high-pressure spray gun group 5 is arranged on the outside of the cylinder liner 7. High-pressure atomizing nozzles 5-1 are arranged on the outer circle high-pressure spray gun group 5. One end of the outer circle high-pressure spray gun group 5 is fixed on a second fixed bracket 19 with adjustable height. The inside of the second fixed bracket 19 has a trapezoidal screw pair, and there is a second rotating handle 19-1 at the upper end. According to the outer circle center position of the cylinder liner 7 with different diameter models, the second rotating handle 19-1 can adjust the height position of the outer circle high-pressure spray gun group 7 up and down. The second moving bracket 4 also has the function of adjusting the height up and down to keep the spraying position of the outer circle high-pressure spray gun group at the best position on the outer circle of the cylinder liner 7. The other end of the outer circle high-pressure spray gun group 5 is detachably arranged on the second moving bracket 4. Manual valves are provided on both the linear nozzles 6-1 and the high-pressure atomizing nozzles 5-1, and the nozzles outside the coverage stroke can be closed according to the spraying coverage range of the cylinder liner 7 with different models to save the spraying flow of the cleaning liquid.

[0024] As Figure 2 shown, high-pressure resistant hoses 20 are connected between the outer circle high-pressure spray gun group 5, the internal hole high-pressure spray gun group 6 and the distribution flange 28. The distribution flange 28 is connected to one end of a high-pressure plunger pump 21 through a high-pressure resistant main oil pipe 29. The maximum output pressure of the high-pressure plunger pump 21 is set to 100 MPa, and the other end of the high-pressure plunger pump 21 extends to the bottom of the secondary water tank 24.

[0025] As Figure 1 shown, an electric heater group 25 is installed inside the secondary water tank 24. A liquid level switch 22 and a temperature control switch 23 are arranged on the secondary water tank 24 in sequence. The temperature control switch 22 controls the operation and stop of the electric heater 25. The temperature control switch 22 is set at a temperature of 95 °C. The liquid level switch 23 controls the operation and stop of the water pump 26 to maintain the safe capacity of the cleaning liquid in the secondary water tank 24. The water pump 26 extracts the cleaning liquid from the primary water tank 27 to the secondary water tank 24 according to the signal of the liquid level switch 23.

[0026] As Figure 1As shown, the first-stage water tank 27 is arranged to sink below the concrete floor. The whole set of equipment is placed in an enclosed room with a rolling shutter to facilitate the complete recovery of the cleaning liquid to the first-stage water tank 27, creating conditions for the recycling of the cleaning liquid (meanwhile, the enclosed room ensures the production safety during the high-temperature and high-pressure cleaning process). The first-stage water tank 27 is designed with filter element filtration and magnetic filtration functions, and the capacity of the first-stage water tank 27 is designed according to the pipeline flushing flow rate and the size of the enclosed working chamber.

[0027] As Figure 1 shown, the adjustable idler bracket 8 has a wide range of position movement on the electric flat car 2, and the spacing adjustment is convenient, facilitating the horizontal adjustment after the feeding of cylinder liners 7 of all models.

[0028] As Figure 1 shown, the design of the first-stage water tank 27 and the second-stage water tank 24 adds a filtration link for the cleaning liquid, ensuring the cleanliness and recycling service life of the circulating cleaning liquid. The first-stage water tank 27 ensures the overall circulation volume of the cleaning liquid and the safe capacity for working cleaning. The second-stage water tank 24 only needs to ensure the safe capacity for the high-pressure plunger pump to continuously extract water liquid, and does not require the large capacity for recycling like the first-stage water tank 27. The electric heater is arranged in the second-stage water tank 24, creating good conditions for controlling the temperature of the working cleaning liquid.

[0029] As Figure 2 shown, both the inner hole high-pressure spray gun group 6 and the outer circle high-pressure spray gun group 5 have position adjustment functions. For cleaning cylinder liners 7 of different diameter models, the high-pressure atomizing nozzles 5-1 and the straight nozzles 6-1 can be adjusted to the best distance from the surface of the cylinder liner 7 to achieve the best cleaning efficiency and quality.

[0030] As Figure 3 shown, the motors 11 of the driving worm gear reducer 15 and the electric flat car 2 are both explosion-proof motors, which can withstand the long-time immersion and repeated flushing of high-temperature and high-pressure cleaning liquid.

[0031] As Figure 1 shown, the cleaning work area is designed as an unmanned enclosed room, and the ground is designed with a water return trough to quickly return to the first-stage water tank 27, which is safe and environmentally friendly.

[0032] As Figure 1 shown, the liquid level switch 23 controls the operation of the water pump 26 to ensure the safe water volume of the second-stage water tank 24, and the temperature control switch 22 controls the electric heater group 25 to keep the temperature of the cleaning liquid in the second-stage water tank 24 directly extracted and sprayed always effectively within the controllable temperature range.

[0033] As Figure 3 shown, after the motor 11 of the driving worm gear reducer 15 is decelerated, the working rotation speed of the final cylinder liner 7 is slow, increasing the effective time for the inner hole wall of the cylinder liner 7 to be flushed instantaneously, which is beneficial to the inner hole cleaning quality and working safety.

[0034] Working principle:

[0035] The electric flat car 2 is at the loading position on the track 1 (the electric flat car 2 completely withdraws from the position of the outer circle and inner hole spray gun groups 5 / 6). According to the basic dimensions of the cylinder liner 7 to be cleaned, the position of the adjustable roller support 8 is pre-adjusted on the platform of the electric flat car 2. The cylinder liner 7 is hoisted with its small end facing the fixed roller support 9 and placed on the rollers of the fixed roller support 9 and the adjustable roller support 8. The distances between adjacent supports 8-2 and adjacent first rollers 8-3 in the adjustable roller support 8 are adjusted to make the axis line of the cylinder liner 7 horizontal (detected by a spirit level).

[0036] Start the electric flat car 2, and make the electric flat car 2 carry the cylinder liner 7 and slowly approach the cleaning working position along the track 1 (at this time, the inner hole high-pressure spray gun group 6 penetrates the inner hole of the cylinder liner 7). The spline flange 12 meshes. Adjust the first rotating handle 18-1 of the fixed bracket 18 to make the main pipe of the inner hole high-pressure spray gun group 6 located at the center position of the inner hole of the cylinder liner 7 (the relatively close distance between all linear nozzles 6-1 and the inner hole wall of the cylinder liner 7). After adjustment by the first moving bracket 3, finally fix the correct position of the inner hole high-pressure spray gun group 6;

[0037] Adjust the second rotating handle 19-1 of the fixed bracket 19 to make the height of the high-pressure atomizing nozzle 5-1 of the outer circle high-pressure spray gun group 5 equal to the height of the outer circle center of the cylinder liner 7. After adjustment by the second moving bracket 4, finally fix the correct position of the outer circle high-pressure spray gun group 5;

[0038] Start the motor 11 and observe the rotation states of the reversing worm gear reducer 14, worm gear reducer 15, transmission shaft 16, gear set 10, first roller 8-3, second roller 9-2, and cylinder liner 7.

[0039] Start the electric heater group 25 of the secondary water tank 24 and enter the temperature control switch control mode (set the heating temperature to 95°C), and start the liquid level switch 23 to enter the automatic control mode of the liquid level switch 23 for the safety liquid levels of the water pump 26 and the secondary water tank 24.

[0040] When the water temperature in the secondary water tank 24 rises to 95°C (the electric heater group 25 automatically trips), after confirming the rotation state of the cylinder liner 7, close the rolling gate of the cleaning chamber, start the ultra-high pressure plunger pump 21, extract the high-temperature cleaning liquid from the secondary water tank 24, boost the pressure to 10 MPa, and start cleaning the cylinder liner 7 through the outer circle high-pressure spray gun group 5 and the inner hole high-pressure spray gun group 6. After the cleaning liquid is sprayed on the surface of the cylinder liner 7 under high pressure, it flows back to the primary water tank 27 through the ground water tank, and after being filtered by the primary water tank 27, it is pumped back to the secondary water tank 24 by the water pump 26. After being heated by the electric heater 25 again, it is extracted by the high-pressure plunger pump 21 to the main pipes of the outer circle high-pressure spray gun group 5 and the inner hole high-pressure spray gun group 6. The cleaning liquid is circulated and sprayed on the cylinder liner 7 by the high-pressure atomizing nozzle 5-1 and the linear nozzle 6-1;

[0041] After the high-temperature and high-pressure jet cleaning time is satisfied, the high-pressure plunger pump 21 is closed to stop the supply of the cleaning liquid. At the interface of the distribution flange 28, compressed air with a pressure of 0.7 MPa dried in the production workshop is connected, and the surface of the cylinder liner 7 is blown dry with compressed air through the main pipelines and nozzles of the outer circle high-pressure spray gun group 5 and the inner hole high-pressure spray gun group 6.

[0042] Finally, stop the supply of compressed air, shut down under the control of the liquid level switch 23 and the temperature control switch 22 of the secondary water tank 24, shut down the motor 11, open the rolling shutter door of the cleaning chamber, remove the first moving bracket 3 and the second moving bracket 4, start the electric flat car 2, disengage the spline flange 12, and the electric flat car 2 drives to the blanking position to end the cleaning.

[0043] Only some exemplary embodiments of the present invention have been described by way of illustration above. Undoubtedly, for those of ordinary skill in the art, the described embodiments can be modified in various different ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the protection scope of the claims of the present invention.

Claims

1. A high temperature and high pressure automatic cleaning device for a ship engine cylinder liner, characterized in that: The electric flat car (2) is slidably arranged on the track (1), and an adjustable roller support frame (8) and a fixed roller support frame (9) are sequentially placed on the electric flat car (2); The adjustable roller support frame (8) comprises an adjustable roller support frame base (8-1), a support (8-2) with an adjustable spacing position is arranged on the adjustable roller support frame base (8-1), and a first roller (8-3) is installed in the arc groove of the support (8-2); The fixed roller support frame (9) is symmetrically provided with a base (9-1), two groups of second rollers (9-2) are rotatably provided on the base (9-1), the second rollers (9-2) can support the cylinder sleeve (7), and a gear group (10) is provided on the side wall of the base (9-1); The gear set (10) comprises a driving gear (10-1) which is rotatably arranged on a side wall of a base (9-1). The driving gear (10-1) drives a driven gear (10-3) to rotate via a transmission gear (10-2), and the driven gear (10-3) is coaxially connected to a roller (9-3).

2. The high-temperature and high-pressure automatic cleaning equipment for the cylinder liner of a ship engine according to claim 1, characterized in that: The driving gear (10-1) is connected to a worm gear reducer (15), and the worm gear reducers (15) are connected to each other via a transmission shaft (16) and maintain a synchronous rotation speed. The other side of the worm gear reducer (15) located at the rear side is connected to a direction-changing worm gear reducer (14), and a detachable connection is achieved between the direction-changing worm gear reducer (14) and the motor (11) via a spline flange (12).

3. The high temperature and high pressure automatic cleaning equipment for the cylinder liner of a ship engine according to claim 1, characterized in that: An inner hole high pressure spray gun group (6) is arranged at the center of the inner hole of the cylinder sleeve (7), and a plurality of groups of linear nozzles (6-1) are arranged on the inner hole high pressure spray gun group (6). One end of the inner hole high pressure spray gun group (6) is fixed on a first height-adjustable fixed bracket (18), and the other end of the inner hole high pressure spray gun group (6) is detachably arranged on a first movable bracket (3). An outer circle high pressure spray gun group (5) is arranged on the outer side of the cylinder sleeve (7), and a high pressure atomizing nozzle (5-1) is arranged on the outer circle high pressure spray gun group (5). One end of the outer circle high pressure spray gun group (5) is fixed on a second height-adjustable fixed bracket (19), and the other end of the outer circle high pressure spray gun group (5) is detachably arranged on a second movable bracket (4).

4. The high-temperature and high-pressure automatic cleaning equipment for the cylinder liner of a ship engine according to claim 3 is characterized by: A high-pressure hose (20) is connected between the outer cylindrical high-pressure spray gun group (5), the inner hole high-pressure spray gun group (6) and the distribution flange (28); the distribution flange (28) is connected to one end of an ultra-high-pressure plunger pump (21) through a high-pressure main oil pipe (29); and the other end of the ultra-high-pressure plunger pump (21) extends to the bottom of the secondary water tank (24).

5. The high temperature and high pressure automatic cleaning equipment for the cylinder liner of a ship engine according to claim 4, characterized in that: The secondary water tank (24) is provided with an electric heater group (25) therein. A temperature control switch (22) and a liquid level switch (23) are arranged in sequence on the secondary water tank (24). The temperature control switch (22) controls the operation and stop of the electric heater (25). The liquid level switch (23) controls the operation and stop of a water pump (26) to maintain a safe capacity of the cleaning liquid in the secondary water tank (24). The water pump (26) extracts the cleaning liquid from the primary water tank (27) into the secondary water tank (24) according to a signal from the liquid level switch (23).

6. The high-temperature and high-pressure automatic cleaning equipment for the cylinder liner of a ship engine according to claim 5, characterized in that: The primary water tank (27) is designed with a filter element.

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