Portable operation tool suitable for quick operation of mechanical valve

Abstract

The invention discloses a portable operation tool suitable for quick operation of a mechanical valve, which comprises an auxiliary wheel (1), the center of the auxiliary wheel (1) is rotatably connected with a rotating rod (2), the bottom end of the rotating rod (2) is provided with a plurality of clamping jaws (3) for fixing a valve hand wheel (5), and the bottom end of each clamping jaw (3) is provided with an anti-collision ball body (4). Aiming at a mechanical valve of which the hand wheel rotates for many turns but the resistance moment is very small, the invention has the characteristic of improving the rotation adjustment efficiency of the valve.

Description

Technical Field

[0001] The invention relates to a valve operating tool, in particular to a portable operating tool suitable for rapid operation of mechanical valves on site. Background Art

[0002] In a pumped storage power station, due to the bidirectional operation of the unit, it has two working conditions: power generation and pumping. In addition, the unit undertakes peak regulation, valley filling, frequency regulation, phase regulation, emergency standby and black start in the power system. Therefore, the unit is frequently started and stopped during the operation of the hydropower station, and needs to be frequently inspected and maintained. The tailwater pipe filling and drainage operation is a relatively labor-intensive operation with a relatively large number of operations during the unit inspection and maintenance. This operation has a large number of mechanical manual isolation valve operations. Some valve opening adjustment operations require fewer handwheel rotations but a large resistance torque. At this time, the corresponding F-type wrench and other operating tools can be used to reduce the resistance torque, thereby reducing the difficulty of operation; however, there are some valves that are the opposite. Although the handwheel rotation required for the valve opening adjustment operation has a small resistance torque, the handwheel is large in size, has a large number of rotations, and has no corresponding auxiliary tools. The operator needs to frequently switch the left and right arms to operate, with a large range of motion, which increases the fatigue of the operator, and takes a long time, which increases the time of inspection and isolation operations, resulting in low efficiency of this type of valve operation. Summary of the invention

[0003] The purpose of the present invention is to provide a portable operating tool suitable for rapid operation of mechanical valves. The present invention is aimed at mechanical valves with a large number of hand wheel rotations but a small resistance torque, and has the characteristics of assisting single-handed operation of large-sized valves and improving the operating efficiency of large-sized valves.

[0004] The technical solution of the present invention is a portable operating tool suitable for rapid operation of mechanical valves, comprising an auxiliary wheel, the central rotation of the auxiliary wheel is connected to a rotating rod, the bottom end of the rotating rod is provided with a plurality of claws for fixing the valve handwheel, and the bottom end of each claw is provided with an anti-collision ball.

[0005] In the aforementioned portable operating tool suitable for rapid operation of mechanical valves, the auxiliary wheel is ellipsoidal in shape.

[0006] In the aforementioned portable operating tool suitable for rapid operation of mechanical valves, the major axis length of the auxiliary wheel is 40-50 mm, and the minor axis length of the auxiliary wheel is 30-40 mm.

[0007] In the aforementioned portable operating tool suitable for quick operation of mechanical valves, a through hole is provided at the center of the auxiliary wheel for the rotating rod to pass through, a bearing is provided inside the through hole, a plug is provided above the through hole, and a limiting sleeve is provided below the through hole, and the rotating rod passes through the auxiliary wheel from the limiting sleeve and is connected to the bearing.

[0008] In the aforementioned portable operating tool suitable for rapid operation of mechanical valves, the clamping claws are provided in three numbers and distributed in a triangular shape, the three clamping claws are at an angle of 120° to each other, and the angles between the three clamping claws and the axis of the rotating rod are all 30°.

[0009] In the aforementioned portable operating tool suitable for rapid operation of mechanical valves, the cross-section of the clamping claw is in the shape of a cone that is larger at the top and smaller at the bottom.

[0010] In the aforementioned portable operating tool suitable for rapid operation of mechanical valves, the inner side of the clamping claw is provided with anti-slip patterns.

[0011] In the aforementioned portable operating tool suitable for rapid operation of mechanical valves, an anti-slip sleeve is provided on the clamping claw.

[0012] In the aforementioned portable operating tool suitable for rapid operation of mechanical valves, the length of the clamping claw is 55 to 65 mm.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] The present invention is mainly aimed at the operation of mechanical valves that require a large number of handwheel rotations but a small resistance torque for on-site mechanical valve opening adjustment operations. The use of this tool can effectively improve the operating efficiency of production operators when operating such valves, save physical strength, and effectively reduce the operating time, thereby shortening the overall maintenance isolation time.

[0015] Moreover, the tool is compact and easy to carry. It can be used whenever you plug it in or pull it out. It is flexible to use and is suitable for valve handwheels with a width of 5 to 30 mm and a thickness of 2 to 20 mm. It is applicable to a wide range of valve types. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the present invention.

[0017] Figure 2 It is a state diagram of the present invention.

[0018] The markings in the attached drawings are: 1. auxiliary wheel; 11. plug; 12. limit sleeve; 2. rotating rod; 3. claw; 4. anti-collision ball; 5. valve handwheel. DETAILED DESCRIPTION

[0019] The present invention will be further described below in conjunction with the embodiments, but they are not intended to limit the present invention.

[0020] Example:

[0021] like Figure 1-Figure 2As shown, a portable operating tool suitable for rapid operation of mechanical valves includes an auxiliary wheel 1, the center of the auxiliary wheel 1 is rotatably connected to a rotating rod 2, the bottom end of the rotating rod 2 is provided with a plurality of claws 3 for fixing a valve handwheel 5, and the bottom end of each claw 3 is provided with an anti-collision ball 4.

[0022] The anti-collision ball 4 is provided to play a protective role and prevent the sharp claws 3 from causing damage to operators or equipment.

[0023] The auxiliary wheel 1 is ellipsoidal in shape, so that the auxiliary wheel 1 fits the palm of the user more closely and is more convenient for the user to grip.

[0024] The length of the major axis of the auxiliary wheel 1 is 45-55 mm, preferably 50 mm, and the length of the minor axis of the auxiliary wheel 1 is 35-45 mm, preferably 40 mm. The size design of the auxiliary wheel 1 is convenient for operators to grip.

[0025] The center of the auxiliary wheel 1 is provided with a through hole for the rotating rod 2 to pass through, a bearing is provided inside the through hole, a plug 11 is provided above the through hole, a limiting sleeve 12 is provided below the through hole, and the rotating rod 2 passes through the auxiliary wheel 1 from the limiting sleeve 12 and is connected to the bearing. The rotating rod 2 passes through the limiting sleeve 12 and is connected to the bearing, so that the rotating connecting rod can only rotate in the circumferential direction but cannot move up and down, which is convenient for one-handed ring-shaped rotating operation.

[0026] The plug 11 is ellipsoidal in shape, which is convenient for gripping and improves the strength of the auxiliary wheel.

[0027] The cross section of the clamping claw 3 is in a tapered shape that is larger at the top and smaller at the bottom, thereby increasing the range of handwheel sizes that the clamping claw is applicable to.

[0028] The number of the claws 3 is three and they are distributed in a triangular shape. The three claws 3 are at an angle of 120° to each other, and the angles between the three claws 3 and the axis of the rotating rod 2 are all 30°. The length of the claws 3 is 55-65 mm, which can better match mechanical valve handwheels 5 of different sizes.

[0029] The inner side of the clamping claw 3 is provided with anti-skid lines. Alternatively, an anti-skid sleeve is provided on the clamping claw 3. By providing an anti-skid design for the clamping claw 3, the friction between the clamping claw 3 and the hand wheel is increased, the support and fixing stability is improved, and the tool is prevented from slipping during operation.

[0030] During operation, the three claws 3 are respectively clamped in the triangular area connected between the ring of the valve handwheel 5 and the internal rotating arm of the valve handwheel 5 for fixing, wherein two claws 3 are on the inner side of the handwheel and one claw 3 is on the outer side of the handwheel. Figure 2As shown, during operation, the operator can hold the auxiliary wheel 1 of the operating tool with one hand, rotate the arm clockwise or counterclockwise, and drive the valve handwheel 5 to rotate through the connecting rod and the claw 3, so as to open or close the mechanical valve. There is no need to frequently change the arm for operation, which is more labor-saving, convenient, and time-saving, and improves the operating efficiency of large-size mechanical valves.

[0031] It should be understood that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. For those skilled in the art, the technical solutions described in the above embodiments can be modified, or some of the technical features therein can be replaced by equivalents; and all these modifications and replacements should fall within the scope of protection of the claims attached to the present invention.

Claims

1. A portable operating tool suitable for rapid operation of mechanical valves, characterized in that: The auxiliary wheel (1) comprises an auxiliary wheel (1), the center of which is rotatably connected to a rotating rod (2), the bottom end of the rotating rod (2) is provided with a plurality of claws (3) for fixing a valve hand wheel (5), and the bottom end of each claw (3) is provided with an anti-collision ball (4).

2. A portable operating tool suitable for rapid operation of mechanical valves according to claim 1, characterized in that: The auxiliary wheel (1) is in an ellipsoidal shape.

3. A portable operating tool suitable for rapid operation of mechanical valves according to claim 1, characterized in that: The length of the major axis of the auxiliary wheel (1) is 40 to 50 mm, and the length of the minor axis of the auxiliary wheel (1) is 30 to 40 mm.

4. A portable operating tool suitable for rapid operation of mechanical valves according to claim 1, characterized in that: A through hole is provided at the center of the auxiliary wheel (1) for the rotating rod (2) to pass through, a bearing is provided inside the through hole, a plug (11) is provided above the through hole, and a limiting sleeve (12) is provided below the through hole, and the rotating rod (2) passes through the auxiliary wheel (1) from the limiting sleeve (12) to be connected to the bearing.

5. A portable operating tool suitable for rapid operation of mechanical valves according to claim 1, characterized in that: The clamping claws (3) are arranged in three numbers and are distributed in a triangular shape, the three clamping claws (3) are at an angle of 120° to each other, and the angles between the three clamping claws (3) and the axis of the rotating rod (2) are all 30°.

6. A portable operating tool suitable for rapid operation of mechanical valves according to claim 1, characterized in that: The cross section of the clamping claw (3) is in a cone shape that is larger at the top and smaller at the bottom.

7. A portable operating tool suitable for rapid operation of mechanical valves according to claim 1, characterized in that: The inner side of the clamping claw (3) is provided with anti-slip patterns.

8. A portable operating tool suitable for rapid operation of mechanical valves according to claim 1, characterized in that: The clamping claw (3) is provided with an anti-slip sleeve.

9. A portable operating tool suitable for rapid operation of mechanical valves according to claim 1, characterized in that: The length of the clamping claw (3) is 55-65 mm.

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