Remote control manual sealing valve

Abstract

The utility model belongs to the field of sealing valves, and particularly relates to a remote control manual sealing valve which comprises a valve body and a driving device, the valve body is installed on a pipeline, a valve rod is connected to the valve body in a rotating mode, an inner cavity partition plate fixedly connected with the valve rod is arranged in a cavity of the valve body, the valve rod is connected with the driving device in a driving mode, and the valve rod is connected with the driving device in a rotating mode. The driving device comprises a power unit, a power output shaft, a first rotating arm, a second rotating arm and a pull rod, the power output shaft is connected with the power output end of the power unit through a transmission assembly, and the two ends of the first rotating arm are connected with the near-valve end of the pull rod and the valve rod respectively. According to the closed valve, opening and closing of the closed valve can be remotely controlled, high-altitude operation of operators is reduced, the sealing performance of the closed valve can be improved, and the safety and operation convenience of the closed valve are improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the closed valve field, concretely relates to a kind of remote control manual closed valve. BACKGROUND

[0002] Closed valve is the important equipment of nuclear island plant ventilation system, is opened and closed by handle or manual device, to isolate ventilation system. Closed valve is the key valve of nuclear island ventilation isolation system, has fire resistance performance requirement, usually located in the top of nuclear power plant part room, the maximum distance from ground is about 8 meters, and needs to be operated periodically. Because height is too high, field operation personnel needs to build the scaffold of matching height before operating, this work is high-altitude, high-risk operation, is not conducive to the safety control of field, the operation and maintenance of closed valve is very inconvenient, increases operation and maintenance cost. Therefore, it is necessary to optimize the defects of manual closed valve. CONTENT OF UTILITY MODEL

[0003] In order to solve the problems existing in the prior art, the utility model provides a kind of remote control manual closed valve, can be operated closed valve, reduce the high-altitude operation of operating personnel, also can improve the closed performance of closed valve, improve the safety and operation convenience of closed valve.

[0004] The specific technical scheme adopted by the utility model is:

[0005] A kind of remote control manual closed valve, including valve body and drive device, the valve body is installed on pipeline, the valve body is rotatably connected with valve stem, the cavity of the valve body is provided with the inner chamber partition plate being fixedly connected with valve stem, the valve stem is driven to be connected with drive device, the drive device includes power unit, power output shaft, first rotary arm, second rotary arm and pull rod, the power output shaft is connected with the power output end of power unit by transmission assembly, the two ends of the first rotary arm are respectively hinged with the near valve end of pull rod and fixedly connected with valve stem, the two ends of the second rotary arm are respectively hinged with the far valve end of pull rod and fixedly connected with power output shaft, the height of power output shaft and valve stem is relatively fixed, the first rotary arm, second rotary arm and pull rod form main four-bar linkage mechanism by the fixed height between power output shaft and valve stem.

[0006] The cavity of the valve body is provided with a plurality of inner chamber partition plates, the inner chamber partition plates are rotatably connected with the valve body by valve stem, the valve stem includes driving rod and driven rod, the driving rod is connected with the first rotary arm, the driven rod is driven to be connected with the first rotary arm by linkage assembly.

[0007] The linkage assembly includes power swing arm and connecting rod, the two ends of the connecting rod are respectively hinged with the overhanging end of power swing arm and first rotary arm, the fixed end of the power swing arm is fixedly connected with driven rod.

[0008] The first rotating arm is in a fan shape structure, and the pull rod and the connecting rod are respectively hinged to two ends of the first rotating arm.

[0009] The inner cavity partition plate comprises a pair of side plates, the side plates are respectively arranged on two sides of the valve rod to clamp the valve rod, the side plates are arranged in an upper and lower overlapping mode and form L-shaped convex edges at upper and lower ends of the inner cavity partition plate, and the L-shaped convex edges of the inner cavity partition plate are overlapped and buckled with each other.

[0010] The inner cavity partition plate further comprises a sealing gasket, a fixed end of the sealing gasket is clamped between the two side plates by means of the two side plates, overhanging ends of the sealing gasket extend to the two ends of the inner cavity partition plate along the L-shaped convex edges, and the sealing gasket is overlapped and buckled with each other between the L-shaped convex edges to form a sealing structure.

[0011] The power unit is a hand wheel, and the transmission assembly is a gear assembly.

[0012] The pipeline is provided with a bearing seat, the power output shaft penetrates into the pipeline to be connected with the second rotating arm through the bearing seat, the bearing seat comprises a bearing transparent cover and a bearing pressing cover, the bearing transparent cover is arranged in abutment with the pipeline, and a first graphite packing ring matched with the pipeline is inlaid on the bearing transparent cover, and a second graphite packing ring matched with the power output shaft and the bearing transparent cover is inlaid on the bearing pressing cover.

[0013] The utility model discloses the beneficial effect is:

[0014] The utility model discloses a drive device of four connecting rod mechanism is driven to rotate the valve rod, makes the angle change of inner cavity partition plate on the valve body to realize the opening and closing of the closed valve, sets up the power unit of drive device above the floor, and the power unit is operated in the room on the floor in the nuclear power station room of staff, and the opening and closing control of the closed valve does not need to set up the scaffold, and staff does not need to climb the scaffold and carry out the high-altitude operation, realizes the safe operation of safe closed valve. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the use state schematic drawing of example 1;

[0016] Figure 2 It is the A-A view of Figure 1

[0017] Figure 3 It is the front view of example 2;

[0018] Figure 4 It is the B-B view of Figure 3

[0019] Figure 5 Figure 3 ​​​CC view;

[0020] Figure 6 for Figure 5 DD-direction sectional view of the inner cavity partition;

[0021] Figure 7 for Figure 6 A magnified schematic diagram of part E in the middle;

[0022] Figure 8 for Figure 4 Enlarged schematic diagram of part F in the middle;

[0023] In the attached diagram, 1 is the valve body, 2 is the drive unit, 3 is the pipe, 4 is the valve stem, 401 is the driving rod, 402 is the driven rod, 5 is the inner cavity partition, 501 is the side plate, 502 is the L-shaped flange, 503 is the sealing gasket, 6 is the power unit, 7 is the power output shaft, 8 is the first rotating arm, 9 is the second rotating arm, 10 is the pull rod, 1001 is the near valve end, 1002 is the far valve end, 11 is the power swing arm, 12 is the connecting rod, 13 is the valve seat, 14 is the floor slab, 15 is the first graphite packing ring, 16 is the bearing cover, 17 is the second graphite packing ring, and 18 is the bearing cover. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0025] Example 1, such as Figures 1-2 As shown, this utility model relates to a remote-controlled manual shut-off valve, including a valve body 1 and a drive device 2. The valve body 1 is installed on a pipeline 3, and a valve stem 4 is rotatably connected to the valve body 1. An inner cavity partition 5 is provided inside the cavity of the valve body 1 and is fixedly connected to the valve stem 4. The valve stem 4 is drivenly connected to the drive device 2. The drive device 2 includes a power unit 6, a power output shaft 7, a first rotating arm 8, a second rotating arm 9, and a pull rod 10. The power output shaft 7 is connected to the power output end of the power unit 6 via a transmission assembly. The two ends of the first rotating arm 8 are respectively... The first cantilever 8 is hinged to the valve end 1001 of the pull rod 10 and fixed to the valve stem 4. The first cantilever 8 is fixedly connected to the valve stem 4 by a key and a set screw. The two ends of the second rotating arm 9 are hinged to the valve end 1002 of the pull rod 10 and fixed to the power output shaft 7. The second rotating arm 9 is fixedly connected to the power output shaft 7 by a key and a set screw. The height of the power output shaft 7 and the valve stem 4 is relatively fixed. The first rotating arm 8, the second rotating arm 9, and the pull rod 10 form a main four-bar linkage mechanism by means of the fixed height between the power output shaft 7 and the valve stem 4.

[0026] Since the shut-off valve is usually installed on the top of the room in a nuclear power plant, the power unit 6 can be installed in the room on the floor above it. Workers can use the drive device 2 to control the opening and closing of the shut-off valve on the top of the room below, without the need to build scaffolding, avoiding high-risk high-altitude operations and meeting the requirements for safe operation.

[0027] In this embodiment, the pipe 3 passes through the floor slab 14 at the top of the nuclear power plant room and through the room above. The drive device 2 is mounted on the pipe 3 by means of a mounting bracket.

[0028] Preferably, the power unit 6 is a handwheel, the transmission assembly is a gear assembly, the axial direction of the power output shaft 7 is horizontal, the axial direction of the handwheel 6 is parallel to the axial direction of the power output shaft 7, or the axial direction of the handwheel 6 is parallel to the Z-axis and perpendicular to the axial direction of the power output shaft 7. In this embodiment, it is preferred that the axial direction of the handwheel 6 is parallel to the Z-axis.

[0029] During operation, the power unit 6 transmits power to the power output shaft 7, which drives the second rotating arm 9 to swing. The second rotating arm 9 is connected to the far valve end 1002 of the pull rod 10, raising or lowering the pull rod 10. The near valve end 1001 of the pull rod 10 is connected to the overhanging end of the first rotating arm 8. As the height of the pull rod 10 changes, it drives the first rotating arm 8 to rotate along the axis of the valve stem 4. The first rotating arm 8 is fixedly connected to the valve stem 4. As the first rotating arm 8 rotates, the valve stem 4 drives the inner cavity partition 5 to rotate on the valve body 1 along the axis of the valve stem 4, thereby realizing the opening and closing of the inner cavity partition 5 on the valve body 1.

[0030] Example 2, as Figures 3-5 As shown, the valve body 1 has multiple inner cavity partitions 5 inside its cavity. The inner cavity partitions 5 are rotatably connected to the valve body 1 via valve stems 4. The valve stems 4 include a driving rod 401 and a driven rod 402. The driving rod 401 is connected to the first rotating arm 8, and the driven rod 402 is driven to the first rotating arm 8 via a linkage assembly. With the help of the linkage assembly, the opening and closing of multiple inner cavity partitions 5 can be achieved by rotating the first rotating arm 8 in the main four-bar linkage mechanism alone. This makes the structure of the drive device 2 more optimized and can meet the opening and closing requirements of a closed valve with a single inner cavity partition or multiple inner cavity partitions.

[0031] Furthermore, the linkage assembly includes a power swing arm 11 and a connecting rod 12. The two ends of the connecting rod 12 are hinged to the cantilever end of the power swing arm 11 and the first rotating arm 8, respectively. The fixed end of the power swing arm 11 is fixedly connected to the driven rod 402 via a key and a set screw. When the driving rod 401 rotates along its own axis with the first rotating arm 8, the first rotating arm 8 drives the power swing arm 11 on the driven rod 402 to rotate along the axis of the driven rod 402 via the connecting rod 12. The power swing arm 11 on the driven rod 402 then drives the driven rod 402 to rotate along its axis, thereby achieving the simultaneous opening and closing of multiple inner cavity partitions 5. The fixed distance between the driving rod 401 and the driven rod 402, the power swing arm 11, the first rotating arm 8, and the connecting rod 12 together form a four-bar linkage, improving the stability of the driving device 2 when driving the opening and closing of multiple inner cavity partitions 5.

[0032] Preferably, the first rotating arm 8 is in a fan structure, the pull rod 10 and the connecting rod 12 are respectively hinged to two ends of the first rotating arm 8, the main four-bar linkage drives the driving rod 401 to rotate, at the same time, power is transmitted to the driven rod 402 through the fan structure, so as to ensure that the driven rod 402 can rotate synchronously with the driving rod 401, and further improve the stability when the plurality of inner cavity partitions 5 are opened and closed.

[0033] Preferably, the inner cavity partition 5 includes a pair of side plates 501, as shown in Figure 6 , Figure 7 , the side plates 501 are respectively arranged on both sides of the valve rod 4 to clamp the valve rod 4, the side plates 501 are arranged in an upper and lower overlapping manner and form L-shaped convex edges 502 at the upper and lower ends of the inner cavity partition 5, the L-shaped convex edges 502 between the inner cavity partitions 5 are overlapped and buckled, the arrangement of the L-shaped convex edges 502 can effectively increase the contact area between the inner cavity partitions 5 and improve the sealing performance when the sealing valve is closed. The valve body 1 is also provided with a valve seat 13, and the L-shaped convex edges 502 close to the side wall of the valve body 1 are overlapped and sealed with the valve seat 13.

[0034] Further, the inner cavity partition 5 also includes a sealing gasket 503, the fixed end of the sealing gasket 503 is clamped and fixed by the two side plates 501, the overhanging end of the sealing gasket 503 extends to the two ends of the inner cavity partition 5 along the L-shaped convex edges 502, the side plates 501 and the sealing gasket 503 are fixed by bolts, the sealing gasket 503 is overlapped and buckled between the L-shaped convex edges 502 to form a sealing structure, the sealing gasket 503 close to the side wall of the valve body 1 is overlapped and sealed with the valve seat 13, further improving the sealing performance when the sealing valve is closed, and the valve seat leakage of the sealing valve can meet the requirements of NB / T20039.2 II level.

[0035] Further, the pipeline 3 is provided with a bearing seat, as shown in Figure 8 , the power output shaft 7 penetrates into the pipeline 3 through the bearing seat to be connected with the second rotating arm 9, the bearing seat includes a bearing transparent cover 16 and a bearing pressing cover 18, the bearing transparent cover 16 is arranged in close contact with the pipeline 3, and a first graphite packing ring 15 matched with the pipeline 3 is embedded on the bearing transparent cover 16, and a second graphite packing ring 17 matched with the power output shaft 7 and the bearing transparent cover 16 is embedded on the bearing pressing cover 18. The bearing pressing cover 18, the second graphite packing ring 17, the bearing transparent cover 16, the first graphite packing ring 15 and the pipeline 3 are extruded to form a sealing structure, which ensures that the leakage (external leakage) of the valve frame is zero.

Claims

1. A remotely controlled manual shut-off valve, comprising a valve body (1) and a drive device (2), wherein the valve body (1) is mounted on a pipeline (3), a valve stem (4) is rotatably connected to the valve body (1), an inner cavity partition (5) fixedly connected to the valve stem (4) is provided in the cavity of the valve body (1), and the valve stem (4) is drivenly connected to the drive device (2), characterized in that: The driving device (2) comprises a power unit (6), a power output shaft (7), a first swing arm (8), a second swing arm (9) and a pull rod (10), the power output shaft (7) is connected with the power output end of the power unit (6) through a transmission assembly, the two ends of the first swing arm (8) are respectively hinged with the near valve end (1001) of the pull rod (10) and fixedly connected with the valve rod (4), the two ends of the second swing arm (9) are respectively hinged with the far valve end (1002) of the pull rod (10) and fixedly connected with the power output shaft (7), the height of the power output shaft (7) and the valve rod (4) is relatively fixed, the first swing arm (8), the second swing arm (9) and the pull rod (10) form a main four-bar linkage mechanism through the fixed height between the power output shaft (7) and the valve rod (4).

2. A remotely controlled manual shut-off valve according to claim 1, characterized in that: A plurality of inner cavity partitions (5) are arranged in the cavity of the valve body (1), the inner cavity partitions (5) are respectively rotationally connected with the valve body (1) through the valve rod (4), the valve rod (4) comprises a driving rod (401) and a driven rod (402), the driving rod (401) is connected with the first swing arm (8), and the driven rod (402) is drivingly connected with the first swing arm (8) through a linkage assembly.

3. A remotely controlled manual shut-off valve according to claim 2, wherein: The linkage assembly comprises a power swing arm (11) and a connecting rod (12), the two ends of the connecting rod (12) are respectively hinged with the overhanging end of the power swing arm (11) and the first swing arm (8), and the fixed end of the power swing arm (11) is fixedly connected with the driven rod (402).

4. A remotely controlled manual shut-off valve according to claim 3, wherein: The first swing arm (8) has a fan-shaped structure, and the pull rod (10) and the connecting rod (12) are respectively hinged with the two ends of the first swing arm (8).

5. A remotely controlled manual shut-off valve according to claim 2, wherein: The inner cavity partition (5) comprises a pair of side plates (501), the side plates (501) are arranged on the two sides of the valve rod (4) to clamp the valve rod (4), the side plates (501) are arranged in an upper and lower overlapping mode and form L-shaped convex edges (502) at the upper and lower ends of the inner cavity partition (5), and the L-shaped convex edges (502) between the inner cavity partitions (5) are overlapped and buckled.

6. A remotely controlled manual shut-off valve according to claim 5, wherein: The inner cavity partition (5) further comprises a sealing gasket (503), the fixed end of the sealing gasket (503) is clamped and fixed through the two side plates (501), the overhanging end of the sealing gasket (503) extends to the two ends of the inner cavity partition (5) along the L-shaped convex edges (502), and the sealing gasket (503) is overlapped to form a sealing structure between the L-shaped convex edges (502).

7. A remotely controlled manual shut-off valve according to claim 1, wherein: The power unit (6) is a hand wheel, and the transmission assembly is a gear assembly.

8. A remotely controlled manual shut-off valve according to claim 1, wherein: A bearing seat is arranged on the pipeline (3), the power output shaft (7) penetrates into the pipeline (3) through the bearing seat and is connected with the second swing arm (9), the bearing seat comprises a bearing transparent cover (16) and a bearing pressing cover (18), the bearing transparent cover (16) is arranged in close contact with the pipeline (3), a first graphite packing ring (15) matched with the pipeline (3) is embedded on the bearing transparent cover (16), and a second graphite packing ring (17) matched with the power output shaft (7) and the bearing transparent cover (16) is embedded on the bearing pressing cover (18).

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