Hydraulic device for remotely controlling gate valve

Abstract

The utility model relates to the technical field of gate valve hydraulic devices, and discloses a hydraulic device for remotely controlling a gate valve, which comprises a hand pump, a control unit cabinet and a signal processor, the hand pump is connected with the gate valve through a hydraulic pipe, the gate valve comprises a gate valve body and a valve cover, the top of a gate plate is provided with a valve rod, and the valve rod is connected with the control unit cabinet. A connecting seat is arranged on the outer wall of the top of the valve deck, a hydraulic oil cylinder is arranged on the top of the connecting seat, a piston rod is arranged in the hydraulic oil cylinder, and an upper outlet rod is arranged at the top end of the piston rod. During remote hydraulic control, the hand wheel is rotated clockwise or anticlockwise, the plug pin is pulled out, the bypass valve is closed, and an upper outlet rod on the hydraulic oil cylinder is driven to ascend and descend through a hand pump on a deck, so that a valve rod and a gate plate of the gate valve are controlled to ascend and descend, and remote hydraulic control over the isolation gate valve is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of gate valve hydraulic devices, in particular to a hydraulic device for remotely controlling a gate valve. Background Art

[0002] In a certain asphalt tanker project, according to the Marpol International Convention for the Prevention of Pollution from Ships requirements on accidental oil spills, it is necessary to arrange isolation gate valves in the cargo tank compartments to isolate the liquid cargo in the 1#2# tanks, while ensuring remote and local operations.

[0003] In previous asphalt tanker projects, small shaft transmission was usually used for remote mechanical switching. According to feedback from actual ships, due to long-term exposure to the offshore environment, small shaft transmission is prone to rust and difficult to operate and maintain.

[0004] In this project, in order to avoid the inconvenience of actual ship operation and the pressure of subsequent warranty, it is urgent to find new applicability solutions.

[0005] Since remote operation needs to be ensured and the mechanical transmission solution is not reliable, electric control or hydraulic control solutions are initially selected. Considering the characteristics of asphalt ships, if electric control is used in the cargo hold area, the explosion-proof requirements will be increased and the cost will be too high, so a hydraulic control solution is adopted. For this purpose, a hydraulic device for remotely controlling a gate valve is provided. Utility Model Content

[0006] The purpose of the utility model is to provide a hydraulic device for remotely controlling a gate valve to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a hydraulic device for remotely controlling a gate valve, comprising a hand pump, a control unit cabinet and a signal processor, the hand pump being connected to a gate valve through a hydraulic pipe, the gate valve comprising: a gate valve body and a valve cover, valve seat rings are arranged on both sides of the gate valve body, a gate plate is arranged between the valve seat rings, a valve stem is arranged on the top of the gate plate, a connecting seat is arranged on the top outer wall of the valve cover, a hydraulic cylinder is arranged on the top of the connecting seat, a piston rod is arranged inside the hydraulic cylinder, the top of the valve stem is connected to the piston rod, an upper rod is arranged on the top of the piston rod, the hand pump is connected to the hydraulic cylinder on the gate valve through a hydraulic pipe, and bypass valves are arranged on the outer sides of both ends of the hydraulic cylinder.

[0008] As a further explanation of the utility model, a travel cylinder is provided on the top of the hydraulic cylinder, a threaded seat is provided on the inner wall of the travel cylinder, a rotating rod is provided inside the threaded seat, a hand wheel is provided on the top of the rotating rod, and the bottom end of the rotating rod and the upper output rod are connected by a pin.

[0009] As a further description of the present invention, a latch hole is provided inside the upper output rod, a latch hole is provided inside the rotating rod, and the latch is tied to one side of the outside of the travel cylinder through a connecting rope.

[0010] As a further description of the utility model, a valve limit switch sensor is provided on one side of the outer wall of the lower half of the stroke cylinder, and a valve limit switch sensor is also provided on one side of the outer wall of the upper half of the stroke cylinder. The valve limit switch sensor is used to detect the position of the bottom end of the rotating rod.

[0011] As a further illustration of the present invention, the control unit cabinet is electrically connected to a signal processor, and the signal processor is electrically connected to a valve limit switch sensor.

[0012] As a further description of the present invention, a signal line is provided between the valve limit switch sensor and the signal processor, a signal line is provided between the signal processor and the control unit cabinet, and a power line is provided on one side of the control unit cabinet.

[0013] As a further description of the present invention, the hand pump is used to promote the flow of hydraulic oil in the hydraulic pipe and the hydraulic cylinder.

[0014] As a further description of the present invention, the inner wall of the threaded seat is provided with an internal thread, and the outer wall of the rotating rod is provided with an external thread matching the internal thread.

[0015] As a further description of the present invention, a packing gland is provided in the middle of the valve cover, located outside the valve stem.

[0016] As a further illustration of the present invention, the hand pump, the control unit cabinet and the signal processor are all arranged on the deck of the hull.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] The utility model provides a hand pump, a signal processor and a control unit cabinet. First, in order to ensure on-site emergency operation, a hydraulic cylinder bypass valve, a rotating rod, a latch and a hand wheel are added. The bypass valve is opened to release the hydraulic control of the upper output rod. The hand wheel is rotated clockwise or counterclockwise to align the pin hole of the rotating rod with the pin hole of the upper output rod, and the latch is inserted. Finally, the rotating rod with a threaded connection is rotated by the hand wheel to drive the upper output rod to rise and fall, thereby realizing on-site control of the isolation gate valve. During remote hydraulic control, the hand wheel is rotated clockwise or counterclockwise to remove the force acting on the latch, pull out the latch, close the bypass valve, and drive the upper output rod on the hydraulic cylinder to rise and fall through the hand pump on the deck, thereby controlling the valve stem and gate plate of the gate valve to rise and fall, thereby realizing remote hydraulic control of the isolation gate valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1This is a connection diagram of a remote hydraulic control device for a hydraulic device for a remotely controlled gate valve of the utility model;

[0020] Figure 2 This is a schematic diagram of a gate valve connection structure of a hydraulic device for remotely controlling a gate valve of the utility model;

[0021] Figure 3 The utility model is an electrical schematic diagram of a hydraulic device for remotely controlling a gate valve.

[0022] In the figure: 1. Gate valve body; 2. Valve seat ring; 3. Gate plate; 4. Valve stem; 5. Valve cover; 6. Connecting seat; 7. Hydraulic cylinder; 8. Bypass valve; 9. Latch; 10. Upper rod; 11. Travel cylinder; 12. Threaded seat; 13. Turn rod; 14. Hand wheel; 15. Valve limit switch sensor; 16. Hand pump; 17. Control unit cabinet; 18. Signal processor; 19. Hydraulic pipe; 20. Signal line; 21. Power line. DETAILED DESCRIPTION

[0023] 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.

[0024] See also Figure 1-Figure 3 The utility model provides a technical solution: a hydraulic device for remotely controlling a gate valve. Since remote operation needs to be ensured and the mechanical transmission solution is not reliable, an electric control or hydraulic control solution is initially selected. Considering the characteristics of asphalt ships, if electric control is selected in the cargo hold area, the explosion-proof requirements will be increased and the cost will be too high, so a hydraulic control solution is adopted.

[0025] On conventional gate valves, hydraulic control solutions can be realized by integrating hydraulic cylinders. There are two types of options: direct pull-out type and worm gear type. In view of the long lift of the gate valve, the worm gear type occupies a large space and is not suitable for the layout of the liquid cargo tank of the asphalt carrier, so the direct pull-out type is selected. The upper rod of the gate valve is pulled and pulled by the bidirectional movement of the hydraulic cylinder to realize the opening and closing of the gate valve.

[0026] By arranging the control unit and hand pump in the upper deck area and connecting the hydraulic oil pipe to the gate valve integrated cylinder, the remote control of the isolation gate valve is achieved as follows:

[0027] It includes a hand pressure pump 16, a control unit cabinet 17 and a signal processor 18. The hand pressure pump 16 is connected to a gate valve through a hydraulic pipe 19. The gate valve includes: a gate valve body 1 and a valve cover 5. Valve seat rings 2 are arranged on both sides of the gate valve body 1. A gate plate 3 is arranged between the valve seat rings 2. A valve stem 4 is arranged on the top of the gate plate 3. A connecting seat 6 is arranged on the outer wall of the top of the valve cover 5. A hydraulic cylinder 7 is arranged on the top of the connecting seat 6. A piston rod is arranged inside the hydraulic cylinder 7. The top of the valve stem 4 is connected to the piston rod. An upper rod 10 is arranged on the top of the piston rod. The hand pressure pump 16 is connected to the hydraulic cylinder 7 on the gate valve through a hydraulic pipe 19. A bypass valve 8 is arranged on the outer side of both ends of the hydraulic cylinder 7. During remote hydraulic control, the hand wheel is rotated clockwise or counterclockwise to remove the force acting on the latch, the latch is pulled out, the bypass valve is closed, and the upper rod 10 on the hydraulic cylinder 7 is driven to rise and fall through the hand pressure pump 16 on the deck, thereby controlling the valve stem 4 and the gate plate 3 of the gate valve to rise and fall, thereby realizing remote hydraulic control of the isolation gate valve.

[0028] The bypass valve allows the operator to bypass certain components without completely shutting down the system, which can reduce system downtime and improve production efficiency. In the present application, the opening and closing of the bypass valve 8 is used to achieve switching between hydraulic and manual modes.

[0029] A travel cylinder 11 is provided on the top of the hydraulic cylinder 7. A threaded seat 12 is provided on the inner wall of the travel cylinder 11. A rotating rod 13 is provided inside the threaded seat 12. A hand wheel 14 is provided on the top of the rotating rod 13. The bottom end of the rotating rod 13 is connected to the upper output rod 10 through a latch 9. A latch hole is provided inside the upper output rod 10, and a latch hole is provided inside the rotating rod 13. The latch is tied to the outer side of the travel cylinder 11 through a connecting rope. The upper output rod 10 is connected or separated from the rotating rod 13 by inserting or pulling out the latch 9, thereby realizing the switching between the manual mode and the hydraulic control mode of the gate valve. First, in order to ensure on-site emergency operation, a hydraulic cylinder bypass valve, a rotating rod, a latch and a hand wheel are added. The bypass valve is opened to release the hydraulic control of the upper output rod. The hand wheel is rotated clockwise or counterclockwise to align the pin hole of the rotating rod with the pin hole of the upper output rod. The latch is inserted. Finally, the rotating rod with threaded connection is rotated by the hand wheel to drive the upper output rod to rise and fall, thereby realizing on-site control of the isolation gate valve.

[0030] A valve limit switch sensor 15 is provided on one side of the outer wall of the lower half of the stroke cylinder 11, and a valve limit switch sensor 15 is also provided on one side of the outer wall of the upper half of the stroke cylinder 11. The valve limit switch sensor 15 is used to detect the position of the bottom end of the rotating rod 13. When the upper valve limit switch sensor 15 detects the position signal of the rotating rod 13, the gate valve is in an open state at this time, and the green indicator light on the control unit cabinet 17 is turned on. Conversely, when the lower valve limit switch sensor 15 detects the position signal of the rotating rod 13, the gate valve is in a closed state at this time, and the red signal light on the control unit cabinet 17 is turned on.

[0031] The control unit cabinet 17 is electrically connected to a signal processor 18, and the signal processor 18 is electrically connected to the valve limit switch sensor 15. A signal line 20 is provided between the valve limit switch sensor 15 and the signal processor 18, and a signal line 20 is provided between the signal processor 18 and the control unit cabinet 17. A power line 21 is provided on one side of the control unit cabinet 17.

[0032] The hand pump 16 is used to promote the flow of hydraulic oil in the hydraulic pipe 19 and the hydraulic cylinder 7. The inner wall of the threaded seat 12 is provided with an internal thread, and the outer wall of the rotating rod 13 is provided with an external thread matching the internal thread.

[0033] A packing gland is provided in the middle of the valve cover 5, outside the valve stem 4, to prevent leakage of hydraulic oil. The hand pump 16, the control unit cabinet 17 and the signal processor 18 are all arranged on the deck of the hull.

[0034] First, to ensure on-site emergency operation, increase the hydraulic cylinder bypass valve, rotating rod, latch and handwheel, open the bypass valve to release the hydraulic control of the upper rod, rotate the handwheel clockwise or counterclockwise to align the pin hole of the rotating rod with the pin hole of the upper rod, insert the latch, and finally rotate the rotating rod with threaded connection by the handwheel to drive the upper rod to rise and fall, thereby realizing on-site control of the isolation gate valve. During remote hydraulic control, rotate the handwheel clockwise or counterclockwise to remove the force acting on the latch, pull out the latch, close the bypass valve, and drive the upper rod 10 on the hydraulic cylinder 7 to rise and fall through the hand pump 16 on the deck, thereby controlling the valve stem 4 and the gate plate 3 of the gate valve to rise and fall, thereby realizing remote hydraulic control of the isolation gate valve.

[0035] Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.

Claims

1. A hydraulic device for remotely controlling a gate valve, comprising a hand pressure pump (16), a control unit cabinet (17) and a signal processor (18), characterized in that: The hand pressure pump (16) is connected to a gate valve via a hydraulic pipe (19), and the gate valve comprises: a gate valve body (1) and a valve cover (5); valve seat rings (2) are provided on both sides of the gate valve body (1); a gate plate (3) is provided between the valve seat rings (2); a valve stem (4) is provided on the top of the gate plate (3); a connecting seat (6) is provided on the top outer wall of the valve cover (5); a hydraulic cylinder (7) is provided on the top of the connecting seat (6); a piston rod is provided inside the hydraulic cylinder (7); the top of the valve stem (4) is connected to the piston rod; an upper rod (10) is provided on the top of the piston rod; the hand pressure pump (16) is connected to the hydraulic cylinder (7) on the gate valve via a hydraulic pipe (19); bypass valves (8) are provided on the outer sides of both ends of the hydraulic cylinder (7).

2. A hydraulic device for remotely controlling a gate valve according to claim 1, characterized in that: A travel cylinder (11) is provided at the top of the hydraulic cylinder (7), a threaded seat (12) is provided on the inner wall of the travel cylinder (11), a rotating rod (13) is provided inside the threaded seat (12), a hand wheel (14) is provided at the top of the rotating rod (13), and the bottom end of the rotating rod (13) and the upper output rod (10) are connected via a latch (9).

3. A hydraulic device for remotely controlling a gate valve according to claim 2, characterized in that: A latch hole is provided inside the upper rod (10), a latch hole is provided inside the rotating rod (13), and the latch is tied to one side of the outside of the travel cylinder (11) via a connecting rope.

4. A hydraulic device for remotely controlling a gate valve according to claim 2, characterized in that: A valve limit switch sensor (15) is provided on one side of the outer wall of the lower half of the stroke cylinder (11), and a valve limit switch sensor (15) is also provided on one side of the outer wall of the upper half of the stroke cylinder (11). The valve limit switch sensor (15) is used to detect the position of the bottom end of the rotating rod (13).

5. A hydraulic device for remotely controlling a gate valve according to claim 1, characterized in that: The control unit cabinet (17) is electrically connected to a signal processor (18), and the signal processor (18) is electrically connected to a valve limit switch sensor (15).

6. A hydraulic device for remotely controlling a gate valve according to claim 5, characterized in that: A signal line (20) is provided between the valve limit switch sensor (15) and the signal processor (18), a signal line (20) is provided between the signal processor (18) and the control unit cabinet (17), and a power line (21) is provided on one side of the control unit cabinet (17).

7. A hydraulic device for remotely controlling a gate valve according to claim 1, characterized in that: The hand pump (16) is used to promote the flow of hydraulic oil in the hydraulic pipe (19) and the hydraulic cylinder (7).

8. A hydraulic device for remotely controlling a gate valve according to claim 2, characterized in that: The inner wall of the threaded seat (12) is provided with an internal thread, and the outer wall of the rotating rod (13) is provided with an external thread matching the internal thread.

9. A hydraulic device for remotely controlling a gate valve according to claim 1, characterized in that: A packing gland is provided in the middle of the valve cover (5) and outside the valve stem (4).

10. A hydraulic device for remotely controlling a gate valve according to claim 1, characterized in that: The hand pump (16), the control unit cabinet (17) and the signal processor (18) are all arranged on the deck of the hull.

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