A marine crane balancing valve

Abstract

The utility model discloses a balancing valve for a marine crane, and relates to the technical field of balancing valves. The balancing valve body comprises a connecting pipe fixedly connected to both sides of the balancing valve body, an annular groove is provided on the outer surface of the connecting pipe, a rotating ring is rotatably connected to the surface of the annular groove through a bearing, a sliding groove is provided on the surface of the rotating ring, a first thread is provided on the outer surface of the right side of the connecting pipe, a connecting nut is threadedly connected to the surface of the first thread, a slider is fixedly connected to the inner surface of the left side of the connecting nut, the slider slides in the sliding groove, a contact is installed on the right side surface of the slider, a contact is installed on the right end surface of the sliding groove, a detection box is fixedly connected to the lower surface of the fixed ring, a capacitive sensor is installed on the inner bottom surface of the detection box, and an alarm is installed on the outer surface of the detection box. The utility model device plays a role of automatically alarming when the balancing valve is loose or leaking by detecting the looseness and leakage, thereby achieving the purpose of improving the practicality of the balancing valve.

Description

Technical Field

[0001] The utility model relates to the technical field of balancing valves, in particular to a balancing valve for a marine crane. Background Art

[0002] A balancing valve is a valve that can achieve special functions. The structure of the valve itself is not special, but it is different in function and place of use. In some use cases, due to the large pressure difference or flow difference between the medium in various parts of the flow channel or container, in order to reduce or balance the difference, a valve is set between the corresponding flow channels or containers to achieve a relative balance of pressure in the flow channels on both sides of the valve, or to achieve flow balance by diversion.

[0003] A marine crane balancing valve disclosed in the Chinese utility model patent application disclosure CN205973502U improves the valve body material and optimizes the valve core, which enables the valve core to work smoothly under large flow and high pressure. However, when a ship is sailing on the sea, it will be affected by natural environments such as waves and wind, causing the hull to vibrate. Long-term vibration will cause the connection of the balancing valve to loosen, and leakage may occur in severe cases. The existing crane balancing valve cannot automatically detect looseness and leakage, and has the disadvantage of poor practicality. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides a balancing valve for a marine crane, which solves the problems raised in the above-mentioned background technology.

[0006] (II) Technical solution

[0007] To achieve the above purpose, the utility model is implemented through the following technical solutions: a ship crane balancing valve, including a balancing valve body, connecting pipes are fixedly connected on both sides of the balancing valve body, the outer surface of the connecting pipe is provided with an annular groove, the surface of the annular groove is rotatably connected with a rotating ring through a bearing, the surface of the rotating ring is provided with a sliding groove, the outer surface of the right side of the connecting pipe is provided with a first thread, the surface of the first thread is threadedly connected with a connecting nut, the inner surface of the left side of the connecting nut is fixedly connected with a slider, the slider slides in the sliding groove, the right side surface of the slider is installed with a contact, the right end surface of the sliding groove is installed with a contact, the outer surface of the left side of the connecting pipe is fixedly connected with a fixing ring, the lower surface of the fixing ring is fixedly connected with a detection box, the inner bottom surface of the detection box is installed with a capacitive sensor, and the outer surface of the detection box is installed with an alarm.

[0008] Optionally, the positions of the contacts and the contacts are relative to each other and are arranged on a control circuit of the alarm.

[0009] Optionally, the inner surface of the right side of the connecting nut is threadedly connected to a hydraulic oil pipe, the outer surface of the left end of the hydraulic oil pipe is provided with a second thread, and a sealing gasket is provided at the connection between the connecting pipe and the end face of the hydraulic oil pipe.

[0010] Optionally, the detection box is located directly below the connection between the connecting pipe and the hydraulic oil pipe, and the lower part of the connecting nut is arranged in the detection box.

[0011] Optionally, the capacitive sensor is electrically connected to the alarm via a wire, a buzzer is installed on the surface of the alarm, and the alarm is electrically connected to the buzzer.

[0012] The utility model provides a balancing valve for a marine crane, which has the following beneficial effects:

[0013] 1. A marine crane balancing valve has the effect of automatic alarm for leakage and looseness at the connection by setting a rotating ring, a connecting nut, a slider, a contact, a contact point, a detection box, a capacitive sensor and an alarm. When in use, the balancing valve body is installed in the corresponding position and connected to the balancing oil circuit. In the process of connecting the connecting pipe and the hydraulic oil pipe, a sealing gasket is set on the end face of the connection between the connecting pipe and the hydraulic oil pipe, and then the connecting nut is turned to the right, and the surface thread of the connecting nut moves to the right on the first thread. During the movement, the rotating ring rotates in the ring groove, and at the same time, the slider on the left inner side of the connecting nut slides to the right in the slide groove, and the left end face of the hydraulic oil pipe is connected to the right end face of the connecting pipe. As the connecting nut moves to the right, the connecting nut and the hydraulic oil pipe are threaded together. After the connecting nut is tightened, the sealing gasket is clamped in the middle of the connecting pipe and the hydraulic oil pipe. At the same time, the slider moves to the rightmost side in the slide groove, and the contact on the right side of the slider is connected to the contact point When the nut is loosened, the slider moves to the left in the slide slot, and the contact is separated from the contact point. When the alarm line is disconnected, the alarm is triggered. When the alarm sounds, the buzzer installed on the control surface sounds to remind the staff. At the same time, after long-term use, when hydraulic oil leaks at the connection, the hydraulic oil seeps out from the connection pipe and the hydraulic oil pipe connection, and the seeped hydraulic oil drips onto the capacitive sensor inside the detection box. At this time, the surrounding dielectric constant will change, resulting in a change in the capacitance value. If one end of the capacitive sensor detects a change in capacitance, it is very likely that a leakage has occurred at the connection. At this time, the capacitive sensor sends a corresponding signal to the alarm through the wire, causing the alarm to sound an alarm. The device automatically alarms when the balancing valve is loose or leaking through the detection setting of looseness and leakage, thereby achieving the purpose of improving the practicality of the balancing valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the structure of the utility model from the front;

[0016] Figure 3 It is a schematic diagram of the structure of the front section of the utility model;

[0017] Figure 4 For this utility model Figure 3 Schematic diagram of the structure at A in the middle.

[0018] In the figure: 1. balancing valve body; 2. connecting pipe; 3. ring groove; 4. rotating ring; 41. slide groove; 5. first thread; 6. connecting nut; 7. slider; 8. contact; 9. contact; 10. hydraulic oil pipe; 1001. second thread; 11. sealing gasket; 12. fixing ring; 13. detection box; 14. capacitive sensor; 15. alarm. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0020] Example 1

[0021] See also Figures 1 to 4 The utility model provides a technical solution: a ship crane balancing valve, comprising a balancing valve body 1, connecting pipes 2 are fixedly connected to both sides of the balancing valve body 1, an annular groove 3 is provided on the outer surface of the connecting pipe 2, a rotating ring 4 is rotatably connected to the surface of the annular groove 3 through a bearing, a sliding groove 41 is provided on the surface of the rotating ring 4, a first thread 5 is provided on the outer surface of the right side of the connecting pipe 2, a connecting nut 6 is threadedly connected to the surface of the first thread 5, a slider 7 is fixedly connected to the inner surface of the left side of the connecting nut 6, the slider 7 slides in the sliding groove 41, a contact 8 is installed on the right side of the slider 7, and a contact 9 is installed on the right end surface of the sliding groove 41, The positions of the contacts 8 and the contacts 9 are relative to each other and are arranged on the control circuit of the alarm 15. The outer surface of the left side of the connecting pipe 2 is fixedly connected with a fixing ring 12, and the lower surface of the fixing ring 12 is fixedly connected with a detection box 13. The inner bottom surface of the detection box 13 is installed with a capacitive sensor 14, and the outer surface of the detection box 13 is installed with an alarm 15. The inner surface of the right side of the connecting nut 6 is threadedly connected with a hydraulic oil pipe 10, and the outer surface of the left end of the hydraulic oil pipe 10 is provided with a second thread 1001. A sealing gasket 11 is provided at the connection between the end faces of the connecting pipe 2 and the hydraulic oil pipe 10. The detection box 13 is located directly below the connection between the connecting pipe 2 and the hydraulic oil pipe 10, and the lower part of the connecting nut 6 is arranged in the detection box 13. The capacitive sensor 14 is electrically connected to the alarm 15 through a wire, and a buzzer is installed on the surface of the alarm 15, and the alarm 15 is electrically connected to the buzzer.

[0022] In order to improve the practicality of the balancing valve, when in use, the rotating ring 4, the connecting nut 6, the slider 7, the contact 8, the contact 9, the detection box 13, the capacitive sensor 14 and the alarm 15 are arranged, so that the marine crane balancing valve has the effect of automatic alarm for leakage and looseness at the connection. When in use, the balancing valve body 1 is installed in the corresponding position and connected to the balancing oil circuit. In the process of connecting the connecting pipe 2 and the hydraulic oil pipe 10, the sealing gasket 11 is set on the end surface where the connecting pipe 2 and the hydraulic oil pipe 10 are connected, and then rotated to the right. The connecting nut 6 moves rightward on the surface thread of the first thread 5. During the movement, the rotating ring 4 rotates in the annular groove 3. At the same time, the slider 7 on the inner side of the left side of the connecting nut 6 slides rightward in the slide groove 41. The left end face of the hydraulic oil pipe 10 is connected to the right end face of the connecting pipe 2. As the connecting nut 6 moves rightward, the connecting nut 6 and the hydraulic oil pipe 10 are threadedly connected together. After the connecting nut 6 is tightened, the sealing gasket 11 is clamped between the connecting pipe 2 and the hydraulic oil pipe 10. At the same time, the slider 7 moves to the rightmost side in the slide groove 41. , the contact 8 on the right side of the slider 7 is connected to the contact 9. At this time, the circuit is closed and the alarm is not triggered. In the later use process, when the connecting nut 6 becomes loose, the slider 7 moves to the left in the slide groove 41. At this time, the contact 8 is separated from the contact 9. When the alarm circuit is in a disconnected state, the alarm 15 is triggered. When the alarm 15 sounds, the buzzer installed on the control surface sounds a buzzer to remind the staff. At the same time, after long-term use, when hydraulic oil leaks at the connection, the hydraulic oil seeps out from the connection between the connecting pipe 2 and the hydraulic oil pipe 10. The hydraulic oil drips onto the capacitive sensor 14 inside the detection box 13, which will cause the surrounding dielectric constant to change, resulting in a change in the capacitance value. If one end of the capacitive sensor 14 detects a change in the capacitance value, it is very likely that a leakage has occurred at the connection. At this time, the capacitive sensor 14 sends a corresponding signal to the alarm 15 through a wire, causing the alarm 15 to sound an alarm. The device, through the detection setting for looseness and leakage, plays a role in automatically alarming when the balancing valve is loose or leaking, thereby achieving the purpose of improving the practicality of the balancing valve.

[0023] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A balancing valve for a marine crane, comprising a balancing valve body (1), characterized in that: The two sides of the balancing valve body (1) are fixedly connected with connecting pipes (2), the outer surface of the connecting pipe (2) is provided with an annular groove (3), the surface of the annular groove (3) is rotatably connected with a rotating ring (4) through a bearing, the surface of the rotating ring (4) is provided with a sliding groove (41), the outer surface of the right side of the connecting pipe (2) is provided with a first thread (5), the surface of the first thread (5) is threadedly connected with a connecting nut (6), the inner surface of the left side of the connecting nut (6) is fixedly connected with a slider (7), the slider (7) slides in the sliding groove (41), the right side surface of the slider (7) is installed with a contact (8), the right end surface of the sliding groove (41) is installed with a contact (9), the outer surface of the left side of the connecting pipe (2) is fixedly connected with a fixing ring (12), the lower surface of the fixing ring (12) is fixedly connected with a detection box (13), the inner bottom surface of the detection box (13) is installed with a capacitive sensor (14), and the outer surface of the detection box (13) is installed with an alarm (15).

2. A marine crane balancing valve according to claim 1, characterized in that: The contact (8) and the contact point (9) are positioned in contrast to each other and are arranged on a control circuit of the alarm (15).

3. A marine crane balancing valve according to claim 1, characterized in that: The inner surface of the right side of the connecting nut (6) is threadedly connected to a hydraulic oil pipe (10), the outer surface of the left end of the hydraulic oil pipe (10) is provided with a second thread (1001), and a sealing gasket (11) is provided at the connection between the end faces of the connecting pipe (2) and the hydraulic oil pipe (10).

4. A marine crane balancing valve according to claim 1, characterized in that: The detection box (13) is located directly below the connection point between the connecting pipe (2) and the hydraulic oil pipe (10), and the lower part of the connecting nut (6) is arranged in the detection box (13).

5. A marine crane balancing valve according to claim 1, characterized in that: The capacitive sensor (14) is electrically connected to the alarm (15) via a wire; a buzzer is mounted on the surface of the alarm (15); and the alarm (15) is electrically connected to the buzzer.

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