Anti-accidental closing valve rotary handle locking device

Abstract

This application provides a locking device for a valve rotary handle to prevent accidental closing, including a connecting rod. A first telescopic rod and a second telescopic rod are respectively provided at both ends of the connecting rod. The first and second telescopic rods are slidably sleeved with the connecting rod. Multiple position holes are provided along the length of both the first and second telescopic rods. Countersunk holes are provided on the side walls of the connecting rod near both ends, and retractable spring pins are provided within the countersunk holes. The spring pins are inserted into the position holes. Pipe clamps and valve clamps are respectively connected to the ends of the first and second telescopic rods, thus solving the problem of automatic closing due to valve aging.

Description

Technical Field

[0001] This invention relates to the field of hydroelectric equipment maintenance, and in particular to a locking device for the rotating handle of a valve to prevent accidental closing. Background Technology

[0002] In oil, gas, and water systems, mechanical valves often age internally, leading to accidental automatic shut-off during equipment operation. This seriously threatens the safe and stable operation of the equipment, but timely replacement may be impossible due to a lack of spare parts or tight production schedules. Currently, most people use ropes or cable ties to secure the valve handwheel to maintain its position. This method has several drawbacks: First, cable ties and ropes are easily damaged and prone to aging, resulting in low reliability. Second, it lacks versatility; for valves of different sizes and installation locations, multiple binding and splicing operations are often required to lock the valve handwheel. Third, it is aesthetically unappealing, lacks uniformity, and is extremely inconvenient to disassemble, essentially offering no reusability after disassembly. Summary of the Invention

[0003] This invention provides a locking device for the rotating handle of a valve to prevent accidental closing, which solves the problem of automatic closing due to valve aging.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a locking device for a valve rotating handle to prevent accidental closing, comprising a connecting rod, with a first telescopic rod and a second telescopic rod respectively provided at both ends of the connecting rod, the first telescopic rod and the second telescopic rod being slidably sleeved with the connecting rod, the first telescopic rod and the second telescopic rod being provided with multiple position holes along the length direction, the connecting rod being provided with countersunk holes near the side walls of both ends, and retractable spring pins being provided in the countersunk holes, the spring pins being inserted into the position holes, and pipe fixing devices and valve fixing devices being respectively connected to the ends of the first telescopic rod and the second telescopic rod.

[0005] In a preferred embodiment, one end of the second telescopic rod is further provided with a threaded fine-tuning rod, the valve retainer is provided with a second rotating sleeve, the end of the fine-tuning rod away from the second telescopic rod is rotatably sleeved with the second rotating sleeve, and the pipe retainer includes a pipe clamp device, one end of the pipe clamp device is provided with a first rotating sleeve, the first rotating sleeve is rotatably sleeved with the first telescopic rod.

[0006] In a preferred embodiment, the pipe clamp device includes a connecting seat with symmetrically arranged single clamping arms at both ends. The distance between the two single clamping arms is adjustable. Each single clamping arm includes an insert plate that is slidably inserted into the connecting seat. The connecting seat contains a rotatable double-ended screw with opposite thread directions at both ends. The insert plates of the two single clamping arms are threadedly connected by the double-ended screw. The inner side of each single clamping arm is provided with a first roller and a second roller, which roll against the side wall of the pipe.

[0007] In a preferred embodiment, the single clamping arm further includes a parallel rear arm and a front arm. An ear plate is provided on one side of the insert plate, and a rotatable rear arm and a front arm are provided on the ear plate. A front arm is provided at one end of the rear arm and the front arm. The middle part of the front arm is hinged to the rear arm, and one end of the front arm is hinged to the front arm. A first roller is provided at the other end of the front arm, and a second roller is provided at the middle of the inner side of the rear arm. A tension spring is provided on the ear plate with one end fixed, and the tension spring pulls the end of the rear arm away from the front arm.

[0008] In a preferred embodiment, the valve retainer also includes a retainer, which is a U-shaped structure with one end open, and one end of the retainer is provided with multiple liftable insert rods.

[0009] In a preferred embodiment, the card holder also includes a housing, which contains multiple air chambers. One end of the insertion rod is inserted into the air chamber and seals the opening of the air chamber.

[0010] In a preferred embodiment, the card holder is provided with a sliding groove, and the box body slides in the sliding groove. A liquid storage cylinder is provided on one side of the card holder, and the liquid storage cylinder is provided with at least two partitioned chambers. A branch path is provided in the card holder, and one end of each branch path is connected to each partitioned chamber. A semi-circular piston is provided in each partitioned chamber. A screw cap with a threaded connection is provided near the end of the liquid storage cylinder. The screw cap simultaneously squeezes each semi-circular piston. A push rod that can move up and down is provided at the lower end of the sliding groove. The push rod abuts against the box body. A piston part is provided at the end of the push rod away from the box body. The piston part slides in the other end of the branch path.

[0011] In the preferred embodiment, the other end of the insertion rod is provided with a conical head.

[0012] In the preferred embodiment, the cross-sectional area of ​​the partition cavity is larger than the cross-sectional area of ​​the piston portion of the sliding groove.

[0013] The beneficial effects of this invention are as follows: By using the connecting rod, spring pin, position hole, and the connecting ring and connecting ring groove to rotate, the handwheel and pipe can be fixed at different installation distances and orientations, and the device itself can be retracted for easy carrying; the structure is simple, and the pipe fixer and valve fixer can lock the handwheels of valves of different diameters and the pipes of different diameters; the valve fixer uses multiple retractable rods to lock the valve handle spokes, which can prevent the valve handle from turning back and also prevent the valve handle from being accidentally opened, and can also play a good locking role for a few valves that close in the opposite direction. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0015] Figure 1 This is a schematic diagram of the present invention.

[0016] Figure 2 This is a cross-sectional view of the present invention.

[0017] Figure 3 This is a structural diagram of the telescopic rod of the present invention.

[0018] Figure 4 This is a schematic diagram of the fixing rod of the present invention.

[0019] Figure 5 This is an optimized schematic diagram of the present invention.

[0020] Figure 6 This is a schematic diagram of the pipe fastener of the present invention.

[0021] Figure 7 This is a schematic diagram of the valve handle spoke fixing of the present invention.

[0022] Figure 8 This is a schematic diagram of the card holder of the present invention.

[0023] Figure 9 This is a schematic diagram of the box and insert rod of the present invention.

[0024] Figure 10 This is a perspective view of the card holder of the present invention.

[0025] Figure 11 This is a top view of the internal flow channel of the card holder of the present invention.

[0026] Figure 12 This is a front view schematic diagram of the internal flow channel of the card holder of the present invention.

[0027] In the diagram: First telescopic rod 1; Position hole 101; Connecting ring slot 102; Second telescopic rod 2; Connecting rod 3; Spring pin 4; Fine-tuning rod 5; Pipe fixer 6; First rotating sleeve 601; Connecting seat 602; Insert plate 603; Double-ended screw 604; Front arm rod 605; Rear arm rod 606; Front end arm 607; First roller 608; Second roller 609; Tension spring 610; Ear plate 611; Fixer connecting rod 7; Connecting ring 701; Connecting ring 702; Hanging ear 703; Valve fixer 8; Second rotating sleeve 801; Card seat 802; Insert rod 803; Box body 804; Air chamber 805; Air passage 806; Top plug 807; Conical head 808; Dividing chamber 809; Branch path 810; Sliding groove 811; Top rod 812; Screw cap 9; Semi-circular piston 10; Valve handle spoke arm 11. Detailed Implementation

[0028] Example 1:

[0029] like Figure 5-12In this invention, a locking device for a valve rotary handle designed to prevent accidental closing includes a connecting rod 3. A first telescopic rod 1 and a second telescopic rod 2 are respectively provided at both ends of the connecting rod 3. The first telescopic rod 1 and the second telescopic rod 2 are slidably sleeved with the connecting rod 3. Multiple position holes 101 are provided along the length of both the first telescopic rod 1 and the second telescopic rod 2. A countersunk hole is provided on the side wall near both ends of the connecting rod 3, and a retractable spring pin 4 is provided inside the countersunk hole. The spring pin 4 is inserted into the position hole 101. A pipe fastener 6 and a valve fastener 8 are respectively connected to the ends of the first telescopic rod 1 and the second telescopic rod 2.

[0030] The size of the pipe retainer 6 and the valve retainer 8 is determined according to the diameter of the pipe and valve shaft. The upper end of the spring clip 4 is rounded. After pressing, the first telescopic rod 1 and the second telescopic rod 2 can extend and retract to both sides. After readjusting the length, the spring clip 4 is inserted into the new position hole 101 to lock the total extension length.

[0031] The spacing between the position holes 101 on the first telescopic rod 1 and the second telescopic rod 2 can be different, and the two can be combined to form different position stops to adapt to different pipe and valve spacings.

[0032] In the preferred embodiment, one end of the second telescopic rod 2 is further provided with a threaded fine-tuning rod 5, the valve retainer 8 is provided with a second rotating sleeve 801, the end of the fine-tuning rod 5 away from the second telescopic rod 2 is rotatably sleeved with the second rotating sleeve 801, and the pipe retainer 6 includes a pipe clamp device, one end of the pipe clamp device is provided with a first rotating sleeve 601, the first rotating sleeve 601 is rotatably sleeved with the first telescopic rod 1.

[0033] The outer wall of the shaft at the end of the fine-tuning rod 5 away from the second telescopic rod 2 is provided with an annular groove. The side wall of the second rotating sleeve 801 is provided with multiple locking pins along the circumference. The locking pins pass through the side wall of the second rotating sleeve 801 and extend into the annular groove to prevent the valve retainer 8 from sliding axially.

[0034] The approximate lengths of the first telescopic rod 1 and the second telescopic rod 2 are obtained by adjusting the position of the spring clip 4 inserted into the position hole 101. Then, the total length of the second telescopic rod 2 can be infinitely adjusted by rotating the fine-tuning rod 5, and locked with a nut so that the valve retainer 8 can be precisely aligned with the valve shaft.

[0035] The outer wall of the first telescopic rod 1 is provided with an annular groove, and the first rotating sleeve 601 is locked in the annular groove. The rotation of the pipe fixer 6 and the valve fixer 8 can adapt to different orientations of the pipe and valve.

[0036] In a preferred embodiment, the pipe clamp device includes a connecting seat 602, with symmetrically arranged single clamping arms at both ends of the connecting seat 602. The distance between the two single clamping arms is adjustable. Each single clamping arm includes an insert plate 603, which is slidably inserted into the connecting seat 602. The connecting seat 602 is provided with a rotatable double-ended screw 604, with the threads at both ends of the double-ended screw 604 rotating in opposite directions. The insert plates 603 of the two single clamping arms are threadedly connected by the double-ended screw 604. A first roller 608 and a second roller 609 are provided on the inner side of the single clamping arm, and the first roller 608 and the second roller 609 roll against the side wall of the pipe.

[0037] The pipe clamp device has a U-shaped structure. The connecting seat 602 has a through groove in the middle to facilitate the wrench to rotate the double-headed screw 604. When the double-headed screw 604 rotates, the insert plates 603 at both ends extend outward or retract inward at the same time to change the clamping space of the four rollers, which can adapt to different pipe sizes.

[0038] In a preferred embodiment, the single clamping arm further includes a parallel rear arm 606 and a front arm 605. A lug plate 611 is provided on one side of the insert plate 603. The lug plate 611 is provided with a rotatable rear arm 606 and a front arm 605. A front arm 607 is provided at one end of the rear arm 606 and the front arm 605. The middle part of the front arm 607 is hinged to the rear arm 606, and one end of the front arm 607 is hinged to the front arm 605. A first roller 608 is provided at the other end of the front arm 607, and a second roller 609 is provided at the middle of the inner side of the rear arm 606. A tension spring 610 is provided on the lug plate 611 with one end fixed. The tension spring 610 pulls the end of the rear arm 606 away from the front arm 607.

[0039] The tension spring 610 provides the clamping force of the single clamping arm inward. When in use, the U-shaped structure opening end of the pipe clamp device is facing the pipe and pushed forward. The outer wall of the pipe presses against the first roller 608, causing the single clamping arm to open. When the pipe falls between the four rollers, the single clamping arm returns to its original position and clamps the pipe.

[0040] The outer walls of the first roller 608 and the second roller 609 are coated with rubber to increase friction.

[0041] In a preferred embodiment, the valve retainer 8 further includes a retainer 802, which is a U-shaped structure with one end open, and one end of the retainer 802 is provided with multiple liftable insert rods 803.

[0042] The insert rod 803 can be inserted into the hollow part of the valve to block the valve handle spoke 11 and prevent the valve handle from rotating.

[0043] In a preferred embodiment, the card holder 802 further includes a housing 804, which contains a plurality of air chambers 805. One end of the insertion rod 803 is inserted into the air chamber 805 and blocks the opening of the air chamber 805.

[0044] The insertion rods 803 on each box 804 are arranged in a single row or multiple rows. The sliding grooves 811 can be set on the three side walls of the U-shaped structure of the card seat 802 and the box 804 can be installed.

[0045] One end of the air chamber 805 is provided with an air passage 806. Each air chamber 805 is connected to an air passage 806. Adjacent air chambers 805 are independent and do not communicate with each other. After the insertion rod 803 is inserted into the air chamber 805 to a set depth, a top plug 807 is installed at the end of the air passage 806 to seal the air section.

[0046] The independent air chambers give each insert rod 803 a certain degree of elasticity. When the insert rod 803 touches the valve handle spoke 11, the retainer 802 can continue to move forward until the adjacent insert rod 803 blocks both sides of the valve handle spoke 11, preventing the valve handle spoke 11 from rotating.

[0047] In a preferred embodiment, the card holder 802 is provided with a sliding groove 811, and the housing 804 slides in the sliding groove 811. A liquid storage cylinder is provided on one side of the card holder 802, and the liquid storage cylinder is provided with at least two partitioned cavities 809. A branch path 810 is provided in the card holder 802, and one end of each branch path 810 is connected to each partitioned cavity 809. A semi-circular piston 10 is provided in each partitioned cavity 809. A screw cap 9 with a threaded connection is provided near the end of the liquid storage cylinder. The screw cap 9 simultaneously presses each semi-circular piston 10. A push rod 812 that can move up and down is provided at the lower end of the sliding groove 811. The push rod 812 abuts against the housing 804. A piston part is provided at the end of the push rod 812 away from the housing 804. The piston part slides in the other end of the branch path 810.

[0048] In the preferred embodiment, the other end of the insertion rod 803 is provided with a conical head 808.

[0049] The tapered surface of the insert rod 803 ensures that the valve handle spoke 11 fits snugly against the insert rod 803, preventing any gaps in the rotational direction due to the density of the insert rod 803. This allows for a reasonable reduction in the number of insert rods 803, thus lowering the complexity of the device.

[0050] In the preferred embodiment, the cross-sectional area of ​​the partition cavity 809 is larger than the cross-sectional area of ​​the piston portion of the sliding groove 811.

[0051] Rotating the cap 9 can simultaneously squeeze the two semi-circular pistons 10. The semi-circular pistons 10 push the liquid in each partition chamber 809. Since the partition chamber 809 has a large cross-section and the piston part at the end of the push rod 812 has a small cross-section, only a small rotation is needed for the push rod 812 to extend a long distance and push out of the box 804, so that the insert rod 803 blocks the valve handle spoke 11.

[0052] Example 2:

[0053] The main components of a portable valve manual locking device are:

[0054] The first telescopic rod consists of two end telescopic rods and a middle connecting rod.

[0055] The second telescopic rod has five position holes.

[0056] The connecting rod has two spring-loaded pins.

[0057] The pipe fastener is connected to the end of the second telescopic rod via a fastener connecting rod.

[0058] The valve retainer is connected to the end of the second telescopic rod via a retainer connecting rod.

[0059] The shrink bolt can shrink the size of the valve retainer.

[0060] External thread, used to fix the valve holder and the holder connecting rod.

[0061] Connecting ring, a connecting device between the fixing rod and the second telescopic rod.

[0062] Connecting ring slot, a slot for fixing the connecting ring on the second telescopic rod.

[0063] Working principle:

[0064] The portable valve manual locking device is assembled in several ways. First, the first telescopic rod consists of two second telescopic rods at each end and a connecting rod in the middle. Each second telescopic rod has five position holes, providing a total of ten adjustment holes. The connecting rod is immovable. By manually moving the second telescopic rod through the spring-loaded locking pin on the connecting rod, the appropriate position holes are found to determine the final length of the first telescopic rod. The pipe clamp connects to the second telescopic rod via an external thread on the clamp connecting rod. This connects the device to the pipe containing the valve, allowing for optimal force application on one end of the portable valve manual locking device. The pipe clamp can be adjusted using a shrink bolt, making it suitable for pipes of various diameters. The valve clamp connects to the second telescopic rod via a connecting ring and a clamp connecting rod. This connects the device to the handwheel of the valve, allowing for optimal force application on the other end of the portable valve manual locking device.

[0065] Secondly, the connecting ring can rotate parallel to the connecting ring surface through the connecting ring groove. The pipe clamp and valve clamp can rotate through the clamp connecting rod. Through the two rotation points, the connecting ring and clamp connecting rod are connected to...

[0066] After the connecting ring is fixed, the optimal force point can be determined by manual operation, ensuring the practicality of the portable valve manual locking device.

[0067] Example 3:

[0068] like Figure 1-4 A portable valve manual locking device includes a connecting rod 3, with a first telescopic rod 1 and a second telescopic rod 2 at each end of the connecting rod 3. The first telescopic rod 1 and the second telescopic rod 2 are slidably sleeved with the connecting rod 3. The first telescopic rod 1 and the second telescopic rod 2 are provided with multiple position holes 101 along their length. The connecting rod 3 has countersunk holes near its two ends, and retractable spring pins 4 are provided in the countersunk holes. The spring pins 4 are inserted into the position holes 101. The ends of the first telescopic rod 1 and the second telescopic rod 2 are provided with connecting ring grooves 102, and each connecting ring groove 102 is provided with a rotatable connecting ring 701. A pipe fixer 6 and a valve fixer 8 are also provided, which are connected to the first telescopic rod 1 and the second telescopic rod 2 through the connecting rings 701 respectively.

[0069] The size of the pipe retainer 6 and valve retainer 8 is determined according to the diameter of the pipe and valve shaft. The upper end of the spring clip 4 is rounded. After pressing, the first telescopic rod 1 and the second telescopic rod 2 can extend and retract to both sides. After readjusting the length, the spring clip 4 is inserted into the new position hole 101 to lock the total extension length. Since the connecting ring 701 can rotate along the connecting ring groove 102, it drives the pipe retainer 6 and valve retainer 8 to change the angle. The pipe retainer 6 and valve retainer 8 can hold the pipe and valve shaft in the correct position and relative angle direction.

[0070] The spacing between the position holes 101 on the first telescopic rod 1 and the second telescopic rod 2 can be different, and the two can be combined to form different position stops to adapt to different pipe and valve spacings.

[0071] In the preferred embodiment, one end of the second telescopic rod 2 is also provided with a threaded fine-tuning rod 5, and the connecting ring groove 102 is provided on the outer wall of the fine-tuning rod 5.

[0072] The approximate lengths of the first telescopic rod 1 and the second telescopic rod 2 are obtained by adjusting the position of the spring clip 4 inserted into the position hole 101. Then, the total length of the second telescopic rod 2 can be infinitely adjusted by rotating the fine-tuning rod 5, and locked with a nut so that the valve retainer 8 can be precisely aligned with the valve shaft.

[0073] In the preferred embodiment, the pipe clamp 6 and the valve clamp 8 are hose clamps. The connecting ring 701 is provided with a lug 703 and a clamp connecting rod 7. One end of the clamp connecting rod 7 is provided with a connecting ring 702, which is sleeved with the lug 703. The other end of the clamp connecting rod 7 is threadedly connected to the pipe clamp 6 or the valve clamp 8.

[0074] The metal spring of the hose clamp is coiled into a loop, and the end is equipped with a shrink bolt to adjust the diameter of the spring coil, so as to adapt to pipes or valve shafts of different diameters.

[0075] The above embodiments are merely preferred technical solutions of the present invention and should not be considered as limitations on the present invention. The scope of protection of the present invention should be limited to the technical solutions described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the scope of protection of the present invention.

Claims

1. A mis-closing prevention valve handle rotation lock device, characterized by: The utility model provides a telescopic pipe fixing device, including the link bar (3), link bar (3) both ends are equipped with first telescopic rod (1) and second telescopic rod (2) respectively, first telescopic rod (1) and second telescopic rod (2) with link bar (3) sliding sleeve joint, first telescopic rod (1) and second telescopic rod (2) are equipped with a plurality of position hole (101) along the length direction, link bar (3) is equipped with the counterbore at the side wall near both ends, is equipped with the spring cotter (4) of retractable in the counterbore, spring cotter (4) inserts position hole (101), and first telescopic rod (1) and second telescopic rod (2) end part are connected with pipe fixing device (6) and valve fixing device (8) respectively, The valve fixing device (8) further includes a clamping seat (802) having a U-shaped structure with an open end, and the clamping seat (802) is provided with a plurality of liftable insertion rods (803) at one end. The clamping seat (802) further includes a box body (804) provided with a plurality of air cavities (805) therein, and the insertion rods (803) are inserted into the air cavities (805) and block the openings of the air cavities (805). The clamping seat (802) is provided with a sliding groove (811), and the box body (804) is inserted into the sliding groove (811) for sliding movement. The clamping seat (802) is provided with a liquid storage cylinder on one side, and the liquid storage cylinder is provided with at least two separated cavities (809) separated therein. The clamping seat (802) is provided with branch channels (810), and each branch channel (810) is in communication with each separated cavity (809) at one end. The separated cavities (809) are provided with semicircular pistons (10) therein. The liquid storage cylinder is provided with a screw thread connected rotary cap (9) near the end portion. The rotary cap (9) simultaneously presses each semicircular piston (10). The lower end of the sliding groove (811) is provided with a top rod (812) capable of moving up and down. The top rod (812) abuts against the box body (804). The end of the top rod (812) away from the box body (804) is provided with a piston portion. The piston portion is inserted into the other end of the branch channel (810) for sliding movement.

2. The anti-reverse flow valve handle locking device of claim 1, wherein: The second telescopic rod (2) is further provided with a screw thread connected fine adjustment rod (5) at one end. The valve fixing device (8) is provided with a second rotating sleeve (801). The end of the fine adjustment rod (5) away from the second telescopic rod (2) is rotatably sleeved with the second rotating sleeve (801). The pipe fixing device (6) includes a pipe clamping device provided with a first rotating sleeve (601) at one end. The first rotating sleeve (601) is rotatably sleeved with the first telescopic rod (1).

3. The anti-reverse flow valve handle locking device of claim 2, wherein: The pipe clamping device includes a connecting seat (602) provided with symmetrically arranged single clamping arms at both ends. The distance between the two single clamping arms can be adjusted. The single clamping arm includes an insertion plate (603) slidably sleeved with the connecting seat (602). The connecting seat (602) is provided with a double-headed screw rod (604) capable of rotating. The screw threads at both ends of the double-headed screw rod (604) are in opposite directions. The insertion plates (603) of the two single clamping arms are threadedly connected by the double-headed screw rod (604). The inner side of the single clamping arm is provided with a first roller (608) and a second roller (609). The first roller (608) and the second roller (609) roll against the side wall of the pipe.

4. The anti-reverse flow valve handle locking device of claim 3, wherein: The single-clamping arm further comprises parallel rear arm rods (606) and front arm rods (605), and the one side of the plug plate (603) is provided with an ear plate (611) which is provided with rotatable rear arm rods (606) and front arm rods (605), and the one end of the rear arm rods (606) and the front arm rods (605) is provided with front end arms (607), the middle part of the front end arms (607) is hinged to the rear arm rods (606), the one end of the front end arms (607) is hinged to the front arm rods (605), the first rollers (608) are arranged at the other end of the front end arms (607), the second rollers (609) are arranged at the middle part of the inner side of the rear arm rods (606), the ear plate (611) is provided with a fixed one end tension spring (610) which pulls the one end of the rear arm rods (606) away from the front end arms (607).

5. The anti-potentially harmful re-engagement valve handle locking device of claim 1, wherein: The other end of the plug rod (803) is provided with a tapered head (808).

6. The misdeclared clearance valve handle locking device of claim 1, wherein: The sectional area of the partition cavity (809) is greater than the sectional area of the piston part of the sliding groove (811).

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