CN112207749A

CN112207749A - Tool for opening and closing manual valve

Info

Publication number: CN112207749A
Application number: CN202011032369.2A
Authority: CN
Inventors: 张少伦; 毛巍岭; 陈鹏; 周海涛; 李爱俊; 王雨; 王飞; 何旺新
Original assignee: CNNC Fujian Nuclear Power Co Ltd
Current assignee: CNNC Fujian Nuclear Power Co Ltd
Priority date: 2020-09-27
Filing date: 2020-09-27
Publication date: 2021-01-12

Abstract

The invention belongs to the technical field of tools for opening and closing a manual valve of a power plant, and particularly relates to a tool for opening and closing the manual valve. The tip end of the V-shaped elastic buckle A is embedded into the fixing rod A towards the fixing rod A until the marble of the V-shaped elastic buckle A is just popped out of the ball hole A, the two telescopic rods A are sleeved on two sides of the fixing rod A, the marble of the V-shaped elastic buckle A passes through the ball hole A on the telescopic rods A, the fixing of the telescopic rods A can be realized, and the marble of the V-shaped elastic buckle A can be separated from the ball hole A on the telescopic rods A as required; spring one end welding is on shell A, and the other end cover is on the cylindrical protrusion of stop pin one side, and the stop pin can control the activity, and the cam is located between stop pin upper surface and the shell A, and the cylinder of manual knob below is fixed together with the circular port of cam after passing through the circular port on the shell A. The invention solves the problems that the valve cannot be operated by the F wrench in certain narrow spaces and the anti-corrosion paint of the valve handwheel falls off.

Description

Tool for opening and closing manual valve

Technical Field

The invention belongs to the technical field of tools for opening and closing a manual valve of a power plant, and particularly relates to a tool for opening and closing the manual valve.

Background

The valve is a device with extremely large number and frequent operation in modern power plants, and the state of the system is often changed by manually operating the valve in debugging and normal operation of the nuclear power plant. Traditional manual valve switch generally uses the F spanner in the power plant, but F spanner switch valve is subject to and needs certain operating space, can not operate some narrow region's valve to use the anticorrosive lacquer that causes on the valve hand wheel that the F spanner switch valve can be unavoidable to drop, cause the valve to corrode.

Disclosure of Invention

The invention aims to provide a tool for opening and closing a manual valve, which replaces a traditional F wrench to open and close the manual valve of a power plant, and solves the problems that the F wrench cannot operate the valve in certain narrow space and the anti-corrosion paint of a valve hand wheel falls off.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

a tool for opening and closing a manual valve comprises a T-shaped handle, a stopping mechanism and an adjustable grasping mechanism, wherein the T-shaped handle comprises a circular tubular operating handle and a straight hexagonal tubular transmission rod, the circular tubular operating handle comprises a fixing rod A, two telescopic rods A and two V-shaped elastic buckles A, the straight hexagonal tubular transmission rod comprises two telescopic rods B, one V-shaped elastic buckle B, a solid cylindrical rod and a fixing rod B, the stopping mechanism comprises a shell A, a manual knob, a cam, a spring, a stopping pin and a braking gear, the adjustable grasping mechanism comprises a shell B, two adjustable claws and a driving gear, and the adjustable claws comprise a plurality of clamping teeth and two cat claws;

the pointed end of the V-shaped elastic buckle A is embedded into the fixing rod A towards the fixing rod A until a marble of the V-shaped elastic buckle A is just popped out of the marble hole A, the two telescopic rods A are sleeved on two sides of the fixing rod A, the marble of the V-shaped elastic buckle A passes through the marble hole A on the telescopic rod A, the telescopic rod A can be fixed, and the marble of the V-shaped elastic buckle A can be separated from the marble hole A on the telescopic rod A as required, so that the sliding adjustment force arm of the telescopic rod A on the fixing rod A is realized; the pointed end of the V-shaped elastic buckle B is embedded into the fixing rod B tube towards the fixing rod B until the marble of the V-shaped elastic buckle B is just popped out of the ball hole B, the telescopic rod B is sleeved on the fixing rod B, the marble of the V-shaped elastic buckle B passes through the ball hole B on the telescopic rod B, the telescopic rod B can be fixed, and the marble of the V-shaped elastic buckle B can be separated from the ball hole B on the telescopic rod B according to requirements so as to realize the sliding of the telescopic rod B on the fixing rod B; the solid cylindrical rod is arranged at the lower end of the telescopic rod B; the upper end of the fixing rod B is connected with the fixing rod A;

one end of the spring is welded on the shell A, the other end of the spring is sleeved on the cylindrical protrusion on one side of the stop pin, the stop pin can move left and right, the cam is positioned between the upper surface of the stop pin and the shell A, the cylinder below the manual knob is fixed with the circular hole of the cam after passing through the circular hole on the shell A, the manual knob drives the cam to rotate through rotation, the cam rotates to extrude the protrusion above the stop pin and drives the stop pin to translate left and right to extrude and release the spring, and therefore the latch on the stop pin is driven to be engaged with and disengaged from the latch;

each cat claw is connected with a mechanical arm without a latch through a mechanical arm with the latch, the mechanical arm with the latch of the cat claw and the mechanical arm of the other cat claw are mutually overlapped in a staggered mode, and the overlapped part is just placed in the track of the shell B;

the solid cylindrical rod sequentially penetrates through circular holes in the shell A, the brake gear, the shell B and the driving gear and is welded with the brake gear and the driving gear.

The surface of the telescopic rod A is surrounded by a plastic sleeve with a groove anti-skidding function.

And a plastic gasket is bonded on the inner side of the cat claw.

The latch furthest from the cat's claw side does not ratchet to the end region of the mechanical arm, the height of the region is consistent with the height of the top end of the latch, and the length of the region which does not ratchet is longer than the length of each tooth stroke of the driving gear, so that the driving gear is stopped when rotating to the region which does not ratchet.

The stop pin is matched with the brake gear, and the driving gear is matched with the latch.

The number of the gear teeth of the brake gear is more than that of the drive gear.

When the manual handle is used, a user firstly rotates the manual knob to enable the cam to prop against the stop pin compression spring so as to enable the stop pin to be separated from the brake gear, then the T-shaped handle is rotated clockwise to drive the driving gear, the driving gear drives the clamping teeth so as to expand the distance between the two adjustable claws, until the distance between the two adjustable claws can buckle the diameter of the hand wheel, the two adjustable claws are buckled at the position with the maximum diameter of the hand wheel, then the T-shaped handle is rotated anticlockwise, at the moment, the plastic gaskets of the two adjustable claws can firmly grasp the hand wheel, then the manual knob is rotated to enable the cam to be separated from the stop pin, and the compressed spring pushes the stop pin to interlock the brake gear, so that the two adjustable claws can firmly grasp the hand wheel no matter the T-shaped handle is rotated anticlockwise or clockwise, and then the valve can be opened and closed by rotating the; after the operation is finished, the manual knob is manually rotated by a user to enable the cam to prop against the stop pin compression spring, so that the stop pin is separated from the brake gear, the T-shaped handle rotates clockwise to drive the driving gear, the driving gear drives the latch to enlarge the distance between the two adjustable claws, and the tool for opening and closing the manual valve is taken away after the plastic gasket is separated from the hand wheel.

The clockwise finger is seen from above the T-shaped handle to the adjustable gripping mechanism.

The counterclockwise finger is seen from above the T-shaped handle to the adjustable gripping mechanism.

When the valve is opened or closed, the telescopic length of the telescopic rod A and the telescopic rod B is adjusted to meet the requirements on the moment and the field space condition.

The beneficial effects obtained by the invention are as follows:

the tool is simple to operate, is suitable for operation in different spaces, is suitable for hand wheels of various sizes, can adjust the torque more easily, enables the hand wheel to be balanced in stress due to the stress of the two claws, and is not easy to damage the anti-corrosion paint on the surface of the hand wheel. The tool has the advantages of obvious effect, low cost and strong practicability, and is suitable for wide popularization.

Drawings

FIG. 1 is a front view of a tool for opening and closing a manual valve;

FIG. 2 is an exploded perspective view of the tool for opening and closing the manual valve;

in the figure: the tool 1 for opening and closing the manual valve, the T-shaped handle 2, the stop mechanism 3, the adjustable grasping mechanism 4, the circular tubular operating handle 21, the straight hexagonal tubular transmission rod 22, the fixed rod A211, the telescopic rod A212, the V-shaped snap fastener A213, the ball hole A214, the plastic sleeve 2121 with the groove anti-slip function, the telescopic rod B221, the V-shaped snap fastener B222, the ball hole B223, the solid cylindrical rod 224, the fixed rod B225, the shell A31, the manual knob 32, the cam 33, the spring 34, the stop pin 35, the brake gear 36, the shell B41, the adjustable claw 42, the driving gear 43, the latch 421, the plastic gasket 422 and the cat claw 423.

Detailed Description

The invention is described in detail below with reference to the figures and specific embodiments.

As shown in fig. 1 and 2, a tool 1 for opening and closing a manual valve comprises a T-shaped handle 2, a stop mechanism 3 and an adjustable grasping mechanism 4, wherein the T-shaped handle 2 comprises a circular tubular operating handle 21 and a straight hexagonal tubular transmission rod 22, the circular tubular operating handle 21 comprises a fixed rod a211, two telescopic rods a212, two V-shaped snap fasteners a213 and a four-ball hole a214, the surface of the telescopic rod a212 surrounds a plastic sleeve 2121 with a groove anti-slip function, the straight hexagonal tubular transmission rod 22 comprises two telescopic rods B221, a V-shaped snap fastener B222, two ball holes B223, a solid cylindrical rod 224 and a fixed rod B225, the stop mechanism 3 comprises a shell a31, a manual knob 32, a cam 33, a spring 34, a stop pin 35 and a brake gear 36, the adjustable grasping mechanism 4 comprises a shell B41, two adjustable claws 42 and a drive gear 43, the adjustable claw 42 comprises a plurality of latch 421, two plastic gaskets 422 and a cat claw 423.

The telescopic rods A212 at two sides of the circular tubular operating handle 21 in the T-shaped handle 2 are respectively tightly attached to the surface by a plastic sleeve A2121 with a groove anti-skid function to play the roles of anti-skid and protecting the two hands of an operator. The pointed end of the V-shaped elastic buckle A213 is embedded into the fixing rod A211 tube towards the fixing rod A211 until the marble of the V-shaped elastic buckle is just popped out from the ball hole A214, the two telescopic rods A212 are sleeved on two sides of the fixing rod A211, the marble of the V-shaped elastic buckle A213 penetrates through the ball hole A214 on the telescopic rod A212, the telescopic rod A212 can be fixed, and the marble of the V-shaped elastic buckle A213 can be separated from the ball hole A214 on the telescopic rod A212 as required, so that the sliding adjusting force arm of the telescopic rod A212 on the fixing rod A211 can be realized. The tip of the V-shaped latch fastener B222 faces the fixing rod B225 and is embedded into the fixing rod B225 until the ball of the V-shaped latch fastener is just ejected out of the ball hole B223, the retractable rod B221 is sleeved on the fixing rod B225, the ball of the V-shaped latch fastener B222 passes through the ball hole B223 on the retractable rod B221, and therefore the retractable rod B221 can be fixed, and the ball of the V-shaped latch fastener B222 can be separated from the ball hole B223 on the retractable rod B221 as required, so that the retractable rod B221 can slide on the fixing rod B225. A solid cylindrical rod 224 is mounted on the lower end of the telescopic rod B221. The upper end of the fixing rod B225 is connected with the fixing rod A211.

One end of a spring 34 in the stopping mechanism 3 is welded on the shell A31, the other end is sleeved on a cylindrical protrusion on one side of the stopping pin 35, the upper and lower surfaces of the stopping pin 35 are not fixed on the shell A31 and the shell B41 and can move left and right, the cam 33 is positioned between the upper surface of the stopping pin 35 and the shell A31, a cylinder below the manual knob 32 passes through a circular hole on the shell A31 and then is fixed with the circular hole of the cam 33, the manual knob 32 is not welded with the shell A31 and can rotate, the cam 33 is also not connected with the shell A31 and the upper surface of the stopping pin 35, the manual knob 32 can drive the cam 33 to rotate through rotation, the cam 33 rotates to extrude the protrusion above the stopping pin 35 and drive the stopping pin 35 to move left and right to extrude and release the spring 34, so as to drive a latch on the stopping pin 35, wherein brake gear 36 is not fixed with housing a31 and housing B41.

The plastic gasket 422 of the adjustable gripping mechanism 4 is bonded to the inner sides of the two paws 423 of the adjustable claw 42 to increase friction and protect the gripped device from mechanical damage, each paw 423 is connected by a mechanical arm with a latch 421 and a mechanical arm without the latch 421, the mechanical arms with the latch 421 of the paw 423 and the mechanical arms of the other paw 423 are overlapped up and down in a staggered manner, the overlapped parts are just placed in the track of the outer shell B41, and the adjustable claw 42 is movable and is not welded with the outer shell B41. The latch 421 farthest from the side of the cat's claw 423 is not notched to the end region of the mechanical arm, the height of the region is consistent with the height of the top end of the latch 421, and the length of the region which is not notched is larger than the length of each tooth stroke of the driving gear 43, so that the driving gear 43 is stopped when rotating to the region which is not notched.

The solid cylindrical rod 224 in the T-shaped handle 2 passes through the circular holes on the shell A31, the brake gear 36, the shell B41 and the driving gear 43 in sequence and is welded with the brake gear 36 and the driving gear 43.

In a preferred scheme, the stop pin 35 is matched with the brake gear 36, the driving gear 43 is matched with the latch 421, and the gear teeth of the brake gear 36 are obviously larger than those of the driving gear 43.

When the hand-operated handle is used, a user firstly rotates the manual knob 32 to enable the cam 33 to abut against the stop pin 35 and compress the spring 34 so as to enable the stop pin 35 to be separated from the brake gear 36, then the T-shaped handle 2 is rotated clockwise (seen from the upper part of the T-shaped handle 2 to the grasping mechanism 4) to drive the driving gear 43, the driving gear 43 drives the latch 421 to expand the distance between the two adjustable claws 42 until the distance between the two adjustable claws 42 can buckle the diameter of the hand wheel, the two adjustable claws 42 are buckled at the position with the maximum diameter of the hand wheel, then the T-shaped handle 2 is rotated anticlockwise (seen from the upper part of the T-shaped handle 2 to the grasping mechanism 4), at the moment, the plastic gaskets 422 of the two adjustable claws 42 can firmly grasp the hand wheel, then the manual knob 32 is rotated to enable the cam 33 to be separated from the stop pin 35, and the compressed spring pushes the stop pin 35 to bite the brake gear 36, so that the T-shaped handle 2 can be rotated clockwise or anticlockwise (seen The hand wheel can be firmly gripped by the two adjustable claws, then the opening and closing operation of the valve can be realized by rotating the T-shaped handle 2, and the requirements on the moment and the field space conditions can be met by adjusting the telescopic lengths of the telescopic rod A212 of the circular tubular operating handle 21 and the telescopic rod B221 of the straight hexagonal tubular transmission rod 22 of the T-shaped handle 2 during the opening and closing of the valve. After the operation is finished, a user manually rotates the manual knob 32 to enable the cam 33 to abut against the stop pin 35 to compress the spring 34 so as to enable the stop pin 35 to be separated from the brake gear 36, then the T-shaped handle 2 (seen from the upper part of the T-shaped handle 2 to the gripping mechanism 4) is rotated clockwise to drive the driving gear 43, the driving gear 43 drives the latch 421 to expand the distance between the two adjustable claws 42, and the tool 1 for opening and closing the manual valve can be taken away after the plastic gasket 422 is separated from the hand wheel.

Claims

1. A tool for opening and closing a manual valve is characterized in that: the T-shaped handle comprises a circular tubular operating handle and a straight hexagonal tubular transmission rod, the circular tubular operating handle comprises a fixing rod A, two telescopic rods A and two V-shaped elastic buckles A, the straight hexagonal tubular transmission rod comprises two telescopic rods B, a V-shaped elastic buckle B, a solid cylindrical rod and a fixing rod B, the stopping mechanism comprises a shell A, a manual knob, a cam, a spring, a stopping pin and a braking gear, the adjustable grasping mechanism comprises a shell B, two adjustable claws and a driving gear, and the adjustable claws comprise a plurality of clamping teeth and two cat claws;

2. A tool for opening and closing a manual valve according to claim 1, wherein: the surface of the telescopic rod A is surrounded by a plastic sleeve with a groove anti-skidding function.

3. A tool for opening and closing a manual valve according to claim 1, wherein: and a plastic gasket is bonded on the inner side of the cat claw.

4. A tool for opening and closing a manual valve according to claim 1, wherein: the latch furthest from the cat's claw side does not ratchet to the end region of the mechanical arm, the height of the region is consistent with the height of the top end of the latch, and the length of the region which does not ratchet is longer than the length of each tooth stroke of the driving gear, so that the driving gear is stopped when rotating to the region which does not ratchet.

5. A tool for opening and closing a manual valve according to claim 1, wherein: the stop pin is matched with the brake gear, and the driving gear is matched with the latch.

6. A tool for opening and closing a manual valve according to claim 5, characterized in that: the number of the gear teeth of the brake gear is more than that of the drive gear.

7. A tool for opening and closing a manual valve according to claim 3, wherein: when the manual handle is used, a user firstly rotates the manual knob to enable the cam to prop against the stop pin compression spring so as to enable the stop pin to be separated from the brake gear, then the T-shaped handle is rotated clockwise to drive the driving gear, the driving gear drives the clamping teeth so as to expand the distance between the two adjustable claws, until the distance between the two adjustable claws can buckle the diameter of the hand wheel, the two adjustable claws are buckled at the position with the maximum diameter of the hand wheel, then the T-shaped handle is rotated anticlockwise, at the moment, the plastic gaskets of the two adjustable claws can firmly grasp the hand wheel, then the manual knob is rotated to enable the cam to be separated from the stop pin, and the compressed spring pushes the stop pin to interlock the brake gear, so that the two adjustable claws can firmly grasp the hand wheel no matter the T-shaped handle is rotated anticlockwise or clockwise, and then the valve can be opened and closed by rotating the; after the operation is finished, the manual knob is manually rotated by a user to enable the cam to prop against the stop pin compression spring, so that the stop pin is separated from the brake gear, the T-shaped handle rotates clockwise to drive the driving gear, the driving gear drives the latch to enlarge the distance between the two adjustable claws, and the tool for opening and closing the manual valve is taken away after the plastic gasket is separated from the hand wheel.

8. A tool for opening and closing a manual valve according to claim 7, characterized in that: the clockwise finger is seen from above the T-shaped handle to the adjustable gripping mechanism.

9. A tool for opening and closing a manual valve according to claim 7, characterized in that: the counterclockwise finger is seen from above the T-shaped handle to the adjustable gripping mechanism.

10. A tool for opening and closing a manual valve according to claim 7, characterized in that: when the valve is opened or closed, the telescopic length of the telescopic rod A and the telescopic rod B is adjusted to meet the requirements on the moment and the field space condition.