Fault detection mechanism of ship liquid level monitoring system

Abstract

A ship liquid level monitoring system fault detection mechanism provided by the present invention comprises a detection device, a trigger device and a display device, the detection device comprises a vertical plate and a plurality of detection assemblies, the vertical plate is vertically arranged in a buoyancy tank, the plurality of detection assemblies are vertically arranged on the vertical plate at equal intervals, and the detection assemblies are arranged in the buoyancy tank. The floating ball is provided with a shifting plate capable of shifting the detection assemblies, the display device comprises a vertical rod and a plurality of indicator lamps vertically arranged on the vertical rod at intervals, the indicator lamps correspond to the detection assemblies in a one-to-one mode, and the detection assemblies can trigger the triggering device to enable the indicator lamps at the corresponding heights to be turned on. Through cooperation of the detection device, the trigger device and the display device, the fault height of the floating ball can be detected, meanwhile, the real-time liquid level height can be monitored, and fault reasons can be found quickly, countermeasures can be formulated, and faults can be repaired quickly. The real-time liquid level information can also ensure the accurate control of the sinking and floating postures of the floating dock, whether the ship can smoothly enter and exit from the dock or not and the safety of the dock.

Description

Technical Field

[0001] The invention relates to the technical field of floating dock liquid level monitoring fault detection, in particular to a ship liquid level monitoring system fault detection mechanism. Background Art

[0002] As a floating object used for launching and repairing ships and marine engineering equipment, floating dock is widely used in shipyards. The floating dock includes a main hull and a buoyancy box. The deck of the main hull is used to carry various marine engineering equipment.

[0003] The buoyancy tank generally uses a liquid level monitoring system to detect the water level in the buoyancy tank, so as to adjust the water level of each buoyancy tank of the floating dock to achieve balance. At present, the more commonly used liquid level monitoring system is a float type liquid level sensor, the principle is to use the float to change synchronously with the liquid level, the float drives the magnetic ring to move, and the displacement of the magnetic ring further controls the switch of the reed switch.

[0004] However, since liquid level monitoring relies on the rise and fall of the float, and the water in the buoyancy box is from the surrounding rivers, the untreated water contains a large amount of impurities. Over time, a large amount of dirt and algae will accumulate in the buoyancy box and on the float, causing the float to be unable to float up or be stuck at a certain height and unable to move, resulting in liquid level monitoring failure.

[0005] The large measurement error of the liquid level monitoring system is directly related to the precise control of the floating dock's floating posture, whether the ship can smoothly enter and exit the dock, and the safety of the dock itself. Based on this, this case was born. Summary of the invention

[0006] 1. Technical issues to be resolved

[0007] In view of the deficiencies in the prior art, the present invention provides a fault detection mechanism for a ship liquid level monitoring system, which solves the problems raised in the above-mentioned background technology.

[0008] (II) Technical solution

[0009] To achieve the above objectives, the present invention is implemented through the following technical solutions: a fault detection mechanism for a ship liquid level monitoring system, the fault detection mechanism is arranged in a buoyancy box of a floating dock, a liquid level monitoring system is arranged in the buoyancy box, the liquid level monitoring system includes a vertically arranged slide bar and a float, the fault detection mechanism includes a detection device, a trigger device and a display device, the detection device includes a vertical plate and a plurality of detection components, the vertical plate is vertically arranged in the buoyancy box, a plurality of detection components are vertically arranged on the vertical plate at equal intervals, a dial plate for moving the detection component is arranged on the float, the display device includes a vertical pole and a plurality of indicator lights arranged on the vertical pole at vertical intervals, the plurality of indicator lights correspond one to one with the plurality of detection components, and the detection component can trigger the trigger device to light up the indicator lights at the corresponding height.

[0010] Preferably, the detection assembly includes a cam, a lever, a lower limit shaft, an upper limit shaft, a telescopic sleeve, a push rod and a spring. The cam is rotatably connected to the vertical plate via a rotating shaft and is linked to the trigger device. The lever is arranged on one side of the cam and is located between the lower limit shaft and the upper limit shaft. When the lever plate rises, the lever can be moved from the lower limit shaft to the upper limit shaft. The telescopic sleeve is vertically arranged on the vertical plate. The push rod is telescopically adapted in the telescopic sleeve and is connected to the top end of the telescopic sleeve through a spring. The bottom end of the push rod corresponds to the convex head of the cam.

[0011] Preferably, the trigger device includes a riser and several groups of transverse tubes, a butterfly valve core, and a ball. The riser is vertically arranged in the buoyancy box, and the top end extends above the water surface. The transverse tube is horizontally arranged and one end is connected to the riser. The butterfly valve core is rotatably adapted in the transverse tube and is coaxially connected to the rotating shaft. The ball gap is adapted in the transverse tube and is located on the side of the butterfly valve core close to the riser. Upper and lower contact blocks are provided on the upper and lower sides of the connection between the transverse tube and the riser. The upper and lower contact blocks are connected in series to the circuit of the indicator light. The ball can contact the upper and lower contact blocks. The ball, upper and lower contact blocks are all conductors.

[0012] Preferably, it also includes a resetting device for resetting the ball to a position away from the upper contact block and the lower contact block.

[0013] Preferably, the reset device includes an air pump, an air inlet pipe, a circular tube with three inlets and outlets, and a circular valve core. The circular tube is arranged on the vertical pipe, and two of the inlets pass through the vertical pipe. The air pump is connected to the other inlet of the circular tube through the air inlet pipe. The circular valve core is pivotally connected in the circular tube. Through hole one, through hole two, and through hole three are circumferentially arranged on the circular valve core. Through hole one and through hole two can pass through the vertical pipe, and through hole two and through hole three can pass through the air inlet pipe and the vertical pipe.

[0014] Preferably, the swing angle of the lever between the lower limit axis and the upper limit axis is 90°.

[0015] (III) Beneficial effects

[0016] The present invention provides a fault detection mechanism for a ship liquid level monitoring system. It has the following beneficial effects:

[0017] 1. The fault detection mechanism of the ship liquid level monitoring system can detect the fault height of the float and monitor the real-time liquid level through the cooperation of the detection device, trigger device and display device, which is conducive to quickly finding the cause of the fault, formulating countermeasures and repairing the fault. Real-time liquid level information can also ensure the precise control of the floating dock's sinking and floating posture, whether the ship can smoothly enter and exit the dock and the safety of the dock itself. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is an axonometric view of the interior of the buoyancy box of the present invention;

[0019] Figure 2 It is a partial schematic diagram of the detection device of the present invention;

[0020] Figure 3 It is a schematic diagram of the structure of the trigger device of the present invention;

[0021] Figure 4 It is a cross-sectional view of a vertical pipe and a horizontal pipe of the present invention;

[0022] Figure 5 is a schematic diagram of a display device of the present invention;

[0023] Figure 6 It is a schematic diagram of the reset device of the present invention;

[0024] Figure 7 It is a state diagram of the detection device when the float ball fails in the present invention;

[0025] Figure 8 It is a state diagram of the trigger device when the float ball of the present invention fails;

[0026] Fig. 9 This is a state diagram of the display device when the float of the present invention fails.

[0027] In the figure: 1 buoyancy box, 2 detection device, 3 trigger device, 4 display device, 5 reset device, 21 vertical plate, 22 cam, 23 lever, 24 lower limit shaft, 25 upper limit shaft, 26 telescopic sleeve, 27 push rod, 28 spring, 29 lever, 221 convex head, 222 rotating shaft, 31 vertical pipe, 32 horizontal pipe, 33 butterfly valve core, 34 ball, 35 upper contact block, 36 lower contact block, 41 vertical rod, 42 indicator light, 51 air pump, 52 air inlet pipe, 53 circular pipe, 54 circular valve core, 55 through hole one, 56 through hole two, 57 through hole three, 6 slide rod, 7 floating ball. DETAILED DESCRIPTION

[0028] The embodiment of the present invention provides a fault detection mechanism for a ship liquid level monitoring system, such as Figure 1-9 As shown, the fault detection mechanism is arranged in the buoyancy box 1 of the floating dock, and a liquid level monitoring system is arranged in the buoyancy box 1, and the liquid level monitoring system is a float type liquid level sensor, which is the prior art. The liquid level monitoring system includes a vertically arranged slide bar 6 and a float 7.

[0029] The fault detection mechanism includes a detection device 2 , a trigger device 3 and a display device 4 .

[0030] The detection device 2 includes a vertical plate 21 and a plurality of detection components. The vertical plate 21 is vertically arranged in the buoyancy box 1, and a plurality of detection components are vertically arranged on the vertical plate 21 at equal intervals. The intervals are set according to the number of detection components required. A paddle 29 for moving the detection components is arranged on the float 7. The paddle 29 is arranged above the float 7. When the float 7 floats normally, the paddle 29 is above the water surface.

[0031] like Figure 5 As shown, the display device 4 is separately arranged on the carrier of the floating dock above the water surface or in the operating room for monitoring by the operator. The display device 4 includes a vertical pole 41 and a plurality of indicator lights 42 arranged on the vertical pole 41 at vertical intervals. The plurality of indicator lights 42 correspond to a plurality of detection components one by one, and each indicator light 42 represents the triggering status of the detection component at the corresponding water level position. When the float 7 fails at the corresponding liquid level, the detection component at the corresponding liquid level can trigger the trigger device 3 to light up the indicator light 42 at the corresponding height.

[0032] like Figure 1-2 As shown, the detection assembly includes a cam 22, a lever 23, a lower limit shaft 24, an upper limit shaft 25, a telescopic sleeve 26, a push rod 27 and a spring 28. The cam 22 is rotatably connected to the vertical plate 21 through a rotating shaft 222 and is linked with the trigger device 3. The upper limit shaft 25 and the lower limit shaft 24 are arranged on the vertical plate 21. The lever 23 is arranged on one side of the cam 22 and is located between the lower limit shaft 24 and the upper limit shaft 25. The swing angle of the lever 23 between the lower limit shaft 24 and the upper limit shaft 25 is 90°.

[0033] When the shift plate 29 rises, the shift rod 23 can be shifted from the lower limit axis 24 to the upper limit axis 25. Figure 2 As shown, when the lever 23 acts on the lower limit shaft 24, the lever plate 29 moves upward to contact the lever 23 and drives the lever 23 to rotate, as shown in FIG. Figure 7 As shown, when the lever 23 rotates to contact the upper limit shaft 25, the lever plate 29 is separated from the lever 23, and the lever 23 rotates 90 degrees.

[0034] like Figure 2 As shown, the telescopic sleeve 26 is vertically arranged on the vertical plate 21, the push rod 27 is telescopically adapted in the telescopic sleeve 26 and connected to the top of the telescopic sleeve 26 through the spring 28, and the bottom end of the push rod 27 corresponds to the convex head 221 of the cam 22. When the lever 23 acts on the lower limit shaft 24, the convex head 221 faces the push rod 27, and the shape of the cam 22 is fixed by the push rod 27. When the lever 23 acts on the upper limit shaft 25, the push rod 27 extends and presses down on the side of the cam 22 to fix the shape of the cam 22.

[0035] like Figure 3-4As shown, the trigger device 3 includes a riser 31 and several groups of transverse tubes 32, a butterfly valve core 33, and a ball 34. The riser 31 is vertically arranged in the buoyancy box 1, and the top extends above the water surface. The top of the riser 31 is connected to the air. The transverse tube 32 is horizontally arranged and one end is connected to the riser 31. Each group of transverse tubes 32 corresponds to a detection component. The corresponding group of transverse tubes 32 is at the same height as the rotating shaft 222. The butterfly valve core 33 is rotatably adapted in the transverse tube 32 and is coaxially connected to the rotating shaft 222. Under normal conditions, the butterfly valve core 33 is in a state as shown in FIG. Figure 4 The state shown is that the cross pipe 32 is located at both ends of the butterfly valve core 33. When the lever 23 moves to contact the upper limit shaft 25, the butterfly valve core 33 rotates 90 degrees, and the butterfly valve core 33 moves to the position shown in FIG. Figure 8 The position shown separates the horizontal tube 32, similar to the principle of a butterfly valve, to prevent water from entering the horizontal tube 32 on one side of the vertical tube 31. The ball 34 is fitted in the horizontal tube 32 and is located on the side of the butterfly valve core 33 close to the vertical tube 31. The ball 34 can slide horizontally in the horizontal tube 32. Due to the clearance between the ball 34 and the horizontal tube 32, water cannot pass through the ball 34 in large quantities. Upper contact blocks 35 and lower contact blocks 36 are provided on the upper and lower sides of the connection between the horizontal tube 32 and the vertical tube 31. The upper contact blocks 35 and the lower contact blocks 36 are connected in series to the circuit of the indicator light 42 at the corresponding height. The ball 34 can contact the upper contact blocks 35 and the lower contact blocks 36. The ball 34, the upper contact blocks 35 and the lower contact blocks 36 are all conductors. When the ball 34 contacts the corresponding upper contact blocks 35 and the lower contact blocks 36, the indicator light 42 at the corresponding height lights up.

[0036] In order to prevent the ball 34 and the butterfly valve core 33 from being unable to reset automatically, a reset device 5 is also included for resetting the ball 34 to a position away from the upper contact block 35 and the lower contact block 36.

[0037] like Figure 6 As shown, the reset device 5 includes an air pump 51, an air inlet pipe 52, a circular pipe 53 with three inlets and outlets, and a circular valve core 54. The circular pipe 53 is arranged on the middle section of the vertical pipe 31, and two of the inlets pass through the vertical pipe 31. The air pump 51 is arranged on the dock carrier above the water surface, and the air pump 51 is connected to the other inlet of the circular pipe 53 through the air inlet pipe 52. The air inlet pipe 52 and the vertical pipe 31 form a three-way connection through the circular pipe 53. The circular valve core 54 is pivotally connected in the circular pipe 53 with a gap, and a handle or a motor can be provided on the rotating shaft of the circular valve core 54 to drive and adjust the rotation of the circular valve core 54. The circular valve core 54 is circumferentially provided with a through hole 1 55, a through hole 2 56, and a through hole 3 57. The through hole 1 55 and the through hole 2 56 can pass through the vertical pipe 31, and the through hole 2 56 and the through hole 3 57 can pass through the air inlet pipe 52 and the vertical pipe 31. Under normal conditions, Figure 6 As shown, through hole 1 55 and through hole 2 56 pass through the vertical pipe 31. When the ball 34 needs to be reset, the circular valve core 54 is moved along the Figure 6The through hole 56 is rotated 90° clockwise, so that the through hole 2 56 faces the air inlet pipe 52, the through hole 3 57 faces the vertical pipe 31 and leads to the side of the horizontal pipe 32, and the through hole 1 55 is covered and closed by the wall of the circular pipe 53, so that the air pump 51 can input the high-pressure gas into the horizontal pipe 32.

[0038] Working principle: When the float 7 fails due to electronic device failure or increased impurities in the buoyancy box 1. Figure 7 As shown, suppose that a failure occurs when the float 7 floats up to the area between the third detection component and the fourth monitoring component, and the actual water level in the buoyancy box 1 has reached the area between the fifth detection component and the sixth monitoring component. At this time, because the float 7 has passed the third detection component, the first three detection components are linked to the corresponding butterfly valve core 33 to close. Since the paddle 29 is higher than the water surface, water will not enter the transverse tube 32 before the butterfly valve core 33 is closed. As a result, the position of the ball 34 in the closed transverse tube 32 does not change. And because the float 7 stops floating, the fourth and fifth detection components are not driven by the paddle 29, and the corresponding butterfly valve core 33 in the transverse tube 32 is in an open state, as shown in FIG. Figure 8 As shown, water enters the transverse tube 32. Since the water pressure is greater than the natural atmospheric pressure, the water pressure pushes the ball 34 horizontally to contact the upper contact block 35 and the lower contact block 36. Fig. 9 As shown, the corresponding fourth and fifth indicator lights 42 are lit. The operator can distinguish the fault height and actual liquid level of the float 6 according to the height of the indicator lights 42. Fig. 9 The height between the third indicator light 42 and the fourth indicator light 42 is the fault height of the float 7), and the height between the top light and the indicator light above it (that is, the height between the fifth indicator light 42 and the sixth indicator light 42 is the actual liquid level height).

[0039] Resetting of the trigger device 3: When the water in the buoyancy box 1 is drained, the water in the cross tube 32 flows out naturally. At this time, by adjusting the circular valve core 54, the air inlet pipe 52 is connected to the vertical pipe 31 through the through hole 2 56 and the through hole 3 57, and the pressurized gas is delivered to the cross tube 31 through the air pump 51, so that the butterfly valve core 33 is opened and reset until the lever 23 contacts the lower limit shaft 24, and at the same time the ball 34 is separated from the upper contact block 35 and the lower contact block 36.

[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fault detection mechanism for a ship liquid level monitoring system, the fault detection mechanism being arranged in a buoyancy box (1) of a floating dock, the buoyancy box (1) being provided with a liquid level monitoring system, the liquid level monitoring system comprising a vertically arranged slide bar (6) and a floating ball (7), characterized in that: The fault detection mechanism comprises a detection device (2), a trigger device (3) and a display device (4); the detection device (2) comprises a vertical plate (21) and a plurality of detection components; the vertical plate (21) is vertically arranged in a buoyancy box (1); the plurality of detection components are vertically arranged at equal intervals on the vertical plate (21); the float (7) is provided with a shifting plate (29) capable of shifting the detection components; the display device (4) comprises a vertical pole (41) and a plurality of indicator lights (42) vertically spaced on the vertical pole (41); the plurality of indicator lights (42) correspond to the plurality of detection components one by one; the detection components can trigger the trigger device (3) to light up the indicator lights (42) at corresponding heights.

2. A ship liquid level monitoring system fault detection mechanism according to claim 1, characterized in that: The detection assembly comprises a cam (22), a lever (23), a lower limit shaft (24), an upper limit shaft (25), a telescopic sleeve (26), a push rod (27) and a spring (28). The cam (22) is rotatably connected to the vertical plate (21) through a rotating shaft (222) and is linked to the trigger device (3). The lever (23) is arranged on one side of the cam (22) and is located between the lower limit shaft (24) and the upper limit shaft (25). When the dial plate (29) rises, the lever (23) can be moved from the lower limit shaft (24) to the upper limit shaft (25). The telescopic sleeve (26) is vertically arranged on the vertical plate (21). The push rod (27) is telescopically adapted in the telescopic sleeve (26) and is connected to the top of the telescopic sleeve (26) through a spring (28). The bottom end of the push rod (27) corresponds to the convex head (221) of the cam (22).

3. A ship liquid level monitoring system fault detection mechanism according to claim 2, characterized in that: The trigger device (3) comprises a vertical pipe (31) and a plurality of groups of horizontal pipes (32), a butterfly valve core (33) and a round ball (34). The vertical pipe (31) is vertically arranged in the buoyancy box (1) and its top end extends above the water surface. The horizontal pipe (32) is horizontally arranged and one end is connected to the vertical pipe (31). The butterfly valve core (33) is rotatably fitted in the horizontal pipe (32) and is coaxially connected to the rotating shaft (222). The round ball (34) is gap-fitted in the horizontal pipe (32). The butterfly valve core (33) is located on a side of the butterfly valve core (33) close to the vertical pipe (31). An upper contact block (35) and a lower contact block (36) are provided on the upper and lower sides of the connection between the horizontal pipe (32) and the vertical pipe (31). The upper contact block (35) and the lower contact block (36) are connected in series to the circuit of the indicator light (42). The round ball (34) can contact the upper contact block (35) and the lower contact block (36). The round ball (34), the upper contact block (35) and the lower contact block (36) are all conductors.

4. A ship liquid level monitoring system fault detection mechanism according to claim 3, characterized in that: It also includes a resetting device (5) for resetting the ball (34) to a position away from the upper contact block (35) and the lower contact block (36).

5. A ship liquid level monitoring system fault detection mechanism according to claim 4, characterized in that: The reset device (5) comprises an air pump (51), an air inlet pipe (52), a circular pipe (53) provided with three inlets and outlets, and a circular valve core (54); the circular pipe (53) is arranged on the stand pipe (31), and two inlets thereof penetrate the stand pipe (31); the air pump (51) is connected to the other inlet of the circular pipe (53) through the air inlet pipe (52); the circular valve core (54) is pivotally connected in the circular pipe (53); a first through hole (55), a second through hole (56), and a third through hole (57) are circumferentially provided on the circular valve core (54); the first through hole (55) and the second through hole (56) can penetrate the stand pipe (31); the second through hole (56) and the third through hole (57) can penetrate the air inlet pipe (52) and the stand pipe (31).

6. A ship liquid level monitoring system fault detection mechanism according to claim 2, characterized in that: The swing angle of the lever (23) between the lower limit axis (24) and the upper limit axis (25) is 90°.

Images