Dual stem misoperation prevention ball valve device

Abstract

The utility model provides a device for double -pole anti -misoperation ball valve, including valve body, be equipped with the rotating ball core on the valve body, ball core one end is equipped with first valve rod, be equipped with spanner on first valve rod, ball core other end is equipped with second valve rod, be equipped with the lock device of rotation on second valve rod, the lock device of rotation includes sleeve, be equipped with lock piece on sleeve, lock piece includes a plurality of elastic lock piece, be equipped with the body of rotation on sleeve. The operator holds spanner and the rotary lever respectively, under the condition that the lock device of rotation locks second valve rod, the staff can not open or close ball valve only through the rotation spanner, avoid the abnormal opening and closing phenomenon of ball valve because of accidental collision or accidental touch handle simultaneously, avoid the security accident of medium leakage, system pressure imbalance etc. that misoperation can cause, avoid the tedious behavior of needing to disassemble bolt of traditional bolt limiting.

Description

Technical Field

[0001] This utility model relates to the field of power plant water supply, and in particular to a double-rod anti-misoperation ball valve device. Background Technology

[0002] Ball valves are widely used valves. Their core principle is a ball with a through hole, which rotates 90° to control on / off flow. They are simple in structure, have good sealing, and low flow resistance. In hydropower stations, they are mainly used in water supply pipelines, pressure steel pipes, and oil supply pipelines to quickly cut off or regulate water flow, ensuring system safety during unit start-up, shutdown, and accidents.

[0003] Existing ball valves have low driving torque; for example, a DN100 ball valve has an operating torque of approximately 350 N / m. Some ball valves only require a few seconds to tens of seconds to complete opening and closing. Even slight external forces can cause changes in the valve's state, making ball valves prone to abnormal opening and closing due to accidental collisions or accidental handle contact. Accidental operation can lead to safety accidents such as media leakage and system pressure imbalance. Especially in high-frequency operation scenarios, the friction between the ball and the valve seat increases, reducing operational stability and further increasing the risk of accidental operation. Traditional anti-malfunction devices such as bolt limiters are inconvenient and cumbersome to operate, and time-consuming and labor-intensive in high-frequency and high-reliability scenarios, making it difficult to meet actual needs. Utility Model Content

[0004] This utility model provides a device for preventing accidental operation of a double-rod ball valve, which solves the problem that the existing ball valve has a small driving torque, and even a slight external force may cause the valve state to change. As a result, the ball valve is prone to abnormal opening and closing due to accidental collision or accidental touch of the handle. Accidental operation may cause safety accidents such as media leakage and system pressure imbalance.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a double-rod anti-misoperation ball valve device, including a valve body, a rotating ball core on the valve body, a first valve stem at one end of the ball core, a wrench on the first valve stem, a second valve stem at the other end of the ball core, a rotary locking device on the second valve stem, the rotary locking device including a sleeve, a locking element on the sleeve, the locking element including multiple elastic locking pieces, and a rotating body on the sleeve.

[0006] In the preferred embodiment, the valve body has water passage holes at both ends, the first valve stem and the second valve stem rotate against the valve body, and both the first valve stem and the second valve stem are provided with threaded pressure rings, with a sealing ring on one side of the threaded pressure ring.

[0007] In the preferred embodiment, a stud is provided on one side of the threaded pressure ring, the stud is threadedly connected to the valve body, a nut is provided at one end of the stud, and a gasket is provided at the bottom of the sealing ring.

[0008] In a preferred embodiment, the sleeve includes a hollow outer cylinder, one end of which has a flat-bottomed groove, and the other end of which has a first thread.

[0009] In a preferred embodiment, the rotating body includes a hollow inner cylinder with a second thread, an arc-shaped surface at one end of the inner cylinder, and a rotating rod at the other end of the inner cylinder.

[0010] In the preferred embodiment, the second thread is connected to the first thread, and the inner cylinder abuts against the outer cylinder.

[0011] In a preferred embodiment, the locking component includes a ring body with multiple circumferentially arrayed elastic locking pieces on the ring body, and one end of each elastic locking piece has a frustum plate.

[0012] In the preferred embodiment, one end of the second valve stem abuts against the ring body, and the frustum plate abuts against the arc-shaped surface of the rotating body.

[0013] In the preferred embodiment, the ring body rests against the flat-bottomed groove.

[0014] The beneficial effects of this utility model are as follows: When a ball valve is needed, the rotating rod of the bottom locking device of the valve body is driven to move the rotating body away from the sleeve, so that the inner cylinder slides down, so that the arc surface moves away from the multiple frustum plates of the locking piece, so that the elastic locking plate releases the second valve stem, and the wrench is turned to make the ball core rotate relative to the valve body, so that the ball valve opens.

[0015] When the ball valve needs to be in the open state for a long time, the lever of the rotary locking device is rotated in the opposite direction so that the arc-shaped surface is close to the multiple frustum plates of the locking element. The multiple frustum plates clamp the second valve stem under the action of the arc-shaped surface, so that the ball core is limited.

[0016] As a two-bar device with an integrated structure, the wrench and lever are operated by the operator holding the wrench and lever with both hands respectively. With the second valve stem locked by the locking device, the operator cannot open or close the ball valve by simply turning the wrench. This avoids the abnormal opening and closing of the ball valve due to accidental collision or accidental touch of the handle, and also avoids safety accidents such as media leakage and system pressure imbalance that may be caused by accidental operation. It also avoids the cumbersome behavior of having to remove bolts as required by the traditional bolt limit. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments; Figure 1 This is a sectional view of the overall structure of this utility model; Figure 2 This is an axonometric view of the rotary lock device of this utility model; Figure 3 This is an exploded side view of the rotary lock device of this utility model; Figure 4 This is a half-section axial side view of the rotary lock device of this utility model; Figure 5 This is an axial side view of the lock component of this utility model; In the diagram: Valve body 1; Valve body connector 101; Sealing ring 102; Gasket 103; Stud 104; Sealing ring 105; Threaded pressure ring 106; Ball core 2; First valve stem 3; Wrench 4; Second valve stem 5; Rotary locking device 6; Sleeve 8; Outer cylinder 801; Flat bottom groove 802; First thread 803; Rotating body 9; Inner cylinder 901; Second thread 902; Arc surface 903; Rotating rod 904; Locking element 10; Ring 1001; Elastic locking plate 1002; Frustum plate 1003. Detailed Implementation

[0018] Example 1: like Figure 1 A double-rod anti-misoperation ball valve device includes a valve body 1, a rotating ball core 2 on the valve body 1, a first valve stem 3 at one end of the ball core 2, a wrench 4 on the first valve stem 3, and a second valve stem 5 at the other end of the ball core 2. A rotary locking device 6 is provided on the second valve stem 5, the rotary locking device 6 including a sleeve 8, a locking element 10 on the sleeve 8, the locking element 10 including multiple elastic locking plates 1002, and a rotating body 9 on the sleeve 8. With this structure, when the ball valve needs to be used, the rotating rod 904 of the rotary locking device 6 at the bottom of the valve body 1 is driven, causing the rotating body 9 to move away from the sleeve 8, causing the inner cylinder 901 to slide down, causing the arc-shaped surface 903 to move away from the multiple frustum plates 1003 of the locking element 10, causing the elastic locking plates 1002 to release the second valve stem 5, and the wrench 4 is rotated, causing the ball core 2 to rotate relative to the valve body 1, thus opening the ball valve.

[0019] When the ball valve needs to be in the open state for a long time, the rotating rod 904 of the rotary locking device 6 is rotated in the opposite direction so that the arc surface 903 is close to the multiple frustum plates 1003 of the locking piece 10, so that the multiple frustum plates 1003 clamp the second valve stem 5 under the action of the arc surface 903, so that the ball core 2 is limited.

[0020] As a dual-bar device with an integral structure, the wrench 4 and the rotating rod 904 are operated by the operator holding the wrench 4 and the rotating rod 904 with both hands respectively. With the locking device 6 locking the second valve rod 5, the operator cannot open or close the ball valve by simply turning the wrench 4. This avoids the abnormal opening and closing of the ball valve due to accidental collision or accidental touch of the handle, and also avoids safety accidents such as media leakage and system pressure imbalance that may be caused by accidental operation. It also avoids the cumbersome behavior of having to remove bolts due to the use of traditional bolt limiters.

[0021] In the preferred embodiment, the valve body 1 has water passage holes at both ends. The first valve stem 3 and the second valve stem 5 rotate against the valve body 1. Both the first valve stem 3 and the second valve stem 5 are provided with threaded pressure rings 106, and a sealing ring 105 is provided on one side of the threaded pressure ring 106. With this structure, both the first valve stem 3 and the second valve stem 5 are provided with studs 104 on one side, which facilitates the installation and disassembly of the valve body connector 101. The sealing ring 105 is used to seal the overall structure and prevent leakage.

[0022] In the preferred embodiment, a stud 104 is provided on one side of the threaded pressure ring 106, the stud 104 is threadedly connected to the valve body 1, a nut is provided at one end of the stud 104, and a gasket 103 is provided at the bottom of the sealing ring 105.

[0023] In a preferred embodiment, the sleeve 8 includes a hollow outer cylinder 801, one end of which has a flat-bottomed groove 802, and the other end has a first thread 803. With this structure, the first thread 803 connects to the second thread 902, the outer cylinder 801 connects to the valve body 1, and the outer cylinder 801 is mounted on the valve body 1. The locking member 10 is installed inside the outer cylinder 801.

[0024] In a preferred embodiment, the rotating body 9 includes a hollow inner cylinder 901, with a second thread 902 on the inner cylinder 901. One end of the inner cylinder 901 has an arc-shaped surface 903, and the other end has a rotating rod 904. With this structure, the arc-shaped surface 903 at the top of the inner cylinder 901 is used to lock multiple frustum plates 1003. When the rotating locking device 6 is in the locked state, the multiple frustum plates 1003 abut against the arc-shaped surface 903. When the rotating locking device 6 is in the unlocked state, the multiple frustum plates 1003 move away from the arc-shaped surface 903.

[0025] In the preferred embodiment, the second thread 902 is connected to the first thread 803, and the inner cylinder 901 abuts against the inner cylinder 801.

[0026] In a preferred embodiment, the locking element 10 includes a ring body 1001, on which a plurality of circumferentially arrayed elastic locking plates 1002 are provided, and one end of each elastic locking plate 1002 is provided with a frustum 1003. With this structure, when the ball valve needs to be used, the rotating rod 904 of the bottom locking device 6 of the valve body 1 is driven to move the rotating body 9 away from the sleeve 8, causing the inner cylinder 901 to slide down, causing the arcuate surface 903 to move away from the plurality of frustum 1003 of the locking element 10, causing the elastic locking plate 1002 to release the second valve stem 5, and the wrench 4 is rotated to rotate the ball core 2 relative to the valve body 1, thereby opening the ball valve.

[0027] When the ball valve needs to be in the open state for a long time, the rotating rod 904 of the rotary locking device 6 is rotated in the opposite direction so that the arc surface 903 is close to the multiple frustum plates 1003 of the locking piece 10, so that the multiple frustum plates 1003 clamp the second valve stem 5 under the action of the arc surface 903, so that the ball core 2 is limited.

[0028] In the preferred embodiment, one end of the second valve stem 5 rests against the inside of the ring 1001, and the frustum plate 1003 rests against the arcuate surface 903 of the rotating body 9. With this structure, the elastic locking plate 1002 is elastic.

[0029] In the preferred embodiment, the ring 1001 abuts against the flat bottom groove 802.

[0030] The above embodiments are merely preferred technical solutions of this utility model and should not be considered as limitations on this utility model. The protection scope of this utility model should be the technical solution 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 protection scope of this utility model.

Claims

1. A double-rod anti-misoperation ball valve device, characterized in that: It includes a valve body (1), a rotating ball core (2) on the valve body (1), a first valve stem (3) on one end of the ball core (2), a wrench (4) on the first valve stem (3), a second valve stem (5) on the other end of the ball core (2), a rotary locking device (6) on the second valve stem (5), the rotary locking device (6) includes a sleeve (8), a locking element (10) on the sleeve (8), the locking element (10) includes multiple elastic locking pieces (1002), and a rotating body (9) on the sleeve (8).

2. The device for preventing accidental operation of a double-rod ball valve according to claim 1, characterized in that: The valve body (1) has water passage holes at both ends. The first valve stem (3) and the second valve stem (5) rotate against the valve body (1). The first valve stem (3) and the second valve stem (5) are both provided with threaded pressure rings (106). A sealing ring (105) is provided on one side of the threaded pressure ring (106).

3. The device for preventing accidental operation of a double-rod ball valve according to claim 2, characterized in that: A stud (104) is provided on one side of the threaded pressure ring (106). The stud (104) is threadedly connected to the valve body (1). A nut is provided at one end of the stud (104). A gasket (103) is provided at the bottom of the sealing ring (105).

4. The device for preventing accidental operation of a double-rod ball valve according to claim 1, characterized in that: The sleeve (8) includes a hollow outer cylinder (801), one end of the outer cylinder (801) is provided with a flat bottom groove (802), and the other end of the outer cylinder (801) is provided with a first thread (803).

5. The device for preventing accidental operation of a double-rod ball valve according to claim 1, characterized in that: The rotating body (9) includes a hollow inner cylinder (901), a second thread (902) on the inner cylinder (901), an arc-shaped surface (903) at one end of the inner cylinder (901), and a rotating rod (904) at the other end of the inner cylinder (901).

6. The device for preventing accidental operation of a double-rod ball valve according to claim 5, characterized in that: The second thread (902) is connected to the first thread (803), and the inner cylinder (901) abuts against the inner cylinder (801).

7. The device for preventing accidental operation of a double-rod ball valve according to claim 1, characterized in that: The lock (10) includes a ring (1001), on which multiple circumferentially arrayed elastic locking pieces (1002) are provided, and one end of the elastic locking piece (1002) is provided with a frustum plate (1003).

8. The device for preventing accidental operation of a double-rod ball valve according to claim 7, characterized in that: One end of the second valve stem (5) rests against the inside of the ring (1001), and the frustum plate (1003) rests against the arc surface (903) of the rotating body (9).

9. The device for preventing accidental operation of a double-rod ball valve according to claim 7, characterized in that: The ring (1001) rests against the flat bottom groove (802).

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