A gas ball valve with automatic shut-off function for gas leak detection

Abstract

This invention discloses a gas ball valve with automatic shut-off function for gas leak detection, relating to the field of gas ball valves. Addressing the problems of existing gas ball valves having limited functionality, lacking gas leak detection, failing to provide timely feedback on gas leaks, and exhibiting low safety, this invention proposes the following solution: It includes a ball valve protective tube body, within which a valve ball is disposed. A first valve stem is mounted on the top of the valve ball. A detection frame is mounted on the side of the first valve stem away from the valve ball. A second valve stem is mounted on the side of the detection frame away from the first valve stem. A rotating handle is mounted on the side of the second valve stem away from the detection frame. A threaded rotating rod is mounted inside the valve ball body. This invention features a novel structure, is easy to use, provides thorough gas leak detection with high accuracy and good detection effect, and promptly shuts off the gas ball valve upon gas leak, thus improving the safety of the gas ball valve.

Description

Technical Field

[0001] This invention relates to the field of gas ball valves, and more particularly to a gas ball valve with an automatic shut-off function for gas leak detection. Background Technology

[0002] A gas ball valve is a valve that uses a ball with a circular channel as the opening and closing component. The ball rotates with the valve stem to achieve the opening and closing action. It is suitable for gas pipelines that require frequent operation. It is quick and easy to open and close, has low fluid resistance, is relatively small in size and light in weight, is easy to maintain, has good sealing performance, and is not limited by the installation direction. The flow direction of the medium can be arbitrary, and it is widely used.

[0003] Currently, the gas ball valves used in the market have a relatively simple structure and limited functions. They still have shortcomings in use, such as lack of gas leak detection, inability to provide timely feedback on gas leaks, and low safety. Therefore, in order to solve these problems, we propose a gas ball valve with automatic shut-off function for gas leak detection. Summary of the Invention

[0004] The present invention proposes a gas ball valve with automatic shut-off function for gas leak detection, which solves the problems of existing gas ball valves having single function, lack of gas leak detection, inability to provide timely feedback on gas leaks, and low safety.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A gas ball valve with automatic shut-off function upon gas leak detection includes a protective tube body. A valve ball is disposed inside the protective tube body. A first valve stem is mounted to the top of the valve ball. A detection frame is mounted on the side of the first valve stem away from the valve ball. A second valve stem is mounted on the side of the detection frame away from the first valve stem. A rotating handle is mounted on the side of the second valve stem away from the detection frame. A threaded rotating rod is mounted inside the valve ball body, penetrating the valve ball and the first valve stem, and embedded within the detection frame. A first rotating fan blade is installed on one side wall inside the valve ball. A rotating screw is provided on one side wall inside the detection frame. A second rotating fan blade is installed on the side wall away from the rotating screw. A gas detection sensor is installed on the side of the two second rotating fan blades that are close to each other. A servo motor is installed on the side of the ball valve protective tube close to the detection frame. A rotating worm gear is fixedly installed on the output shaft of the servo motor. The rotating worm gear is embedded in the ball valve protective tube and is threadedly matched with the first valve stem.

[0007] Preferably, both ends of the ball valve protective tube are fixedly installed with connecting discs, the connecting discs are symmetrically arranged with the central axis of the ball valve protective tube as the axis of symmetry, and both connecting discs have the same inner diameter as the ball valve protective tube.

[0008] Preferably, a sealing gasket is provided on the side of the ball valve protective tube near the ball body. The sealing gaskets are symmetrically arranged with the central axis of the ball body as the axis of symmetry, and both sealing gaskets are matched with the sealing of the ball body.

[0009] Preferably, the inner side of the valve ball is provided with a ball groove, and the ball groove has the same inner diameter as the ball valve protective tube.

[0010] Preferably, the central axes of the ball valve protective tube body, the ball valve body, the threaded rotating rod, the first valve stem, the second valve stem, and the rotating handle are all aligned, and the threaded rotating rod is rotatedly matched with the ball valve body, the first valve stem, the detection frame, and the rotating screw.

[0011] Preferably, the first rotating fan blades are arranged in a circular array with the center line of the threaded rotating rod as the origin and are evenly distributed, the second rotating fan blades are arranged in a circular array with the center line of the rotating screw as the origin and are evenly distributed, and the wind directions of the two second rotating fan blades are opposite.

[0012] Preferably, the side wall of the detection frame is hollowed out, the rotating screw rotates in sync with the inner side of the detection frame, the second rotating fan blade and the gas detection sensor are symmetrically arranged about the central axis of the rotating screw, and both gas detection sensors are electrically connected to the servo motor.

[0013] Preferably, the first valve stem penetrates the ball valve protective tube body, and both the valve ball and the first valve stem are rotatedly matched with the inner side of the ball valve protective tube body.

[0014] The beneficial effects of this invention are as follows:

[0015] 1. By setting a first rotating fan blade plate inside the valve ball body to drive the threaded rotating rod to rotate, the rotating screw drives the second rotating fan blade plate to rotate, drawing nearby gas into the detection frame for gas leak detection. This accelerates the air circulation speed, ensures that the gas is fully detected, avoids leak dead zones from going undetected, improves detection accuracy, and optimizes detection results.

[0016] 2. By connecting the servo motor to the gas detection sensor, when the gas detection sensor detects a gas leak, it drives the servo motor to rotate the worm gear. The rotating worm gear drives the first valve stem to rotate, thereby rotating the valve ball and closing the gas ball valve to prevent further gas leakage, stop the damage in time, and improve the safety of the gas ball valve.

[0017] In summary, this gas ball valve has a simple structure, is easy to use, provides thorough gas leak detection with high accuracy and good detection effect, and can promptly close the gas ball valve when a gas leak occurs, thus improving the safety of its use. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention.

[0019] Figure 2 This is a cross-sectional structural diagram of the present invention.

[0020] Figure 3 This is a top view of the present invention.

[0021] Figure 4 This is a side view of the present invention.

[0022] Figure 5 For the present invention Figure 1 A schematic diagram of the cross-sectional structure at point AA.

[0023] Figure 6 For the present invention Figure 1 A schematic diagram of the cross-sectional structure at point BB.

[0024] Figure 7 For the present invention Figure 2 A magnified view of a section at point C.

[0025] The following are the labels in the diagram: 1. Ball valve protective tube; 2. Valve ball; 3. Threaded rotating rod; 4. First rotating fan blade; 5. First valve stem; 6. Rotating worm gear; 7. Servo motor; 8. Detection frame; 9. Rotating screw; 10. Second rotating fan blade; 11. Gas detection sensor; 12. Second valve stem; 13. Rotating handle; 14. Ball groove; 15. Connecting plate; 16. Sealing gasket. Detailed Implementation

[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0027] Reference Figure 1-7A gas ball valve with automatic shut-off function for gas leak detection includes a ball valve protective tube body 1. A valve ball 2 is disposed inside the ball valve protective tube body 1. A first valve stem 5 is mounted on the top of the valve ball 2. A detection frame 8 is mounted on the side of the first valve stem 5 away from the valve ball 2. A second valve stem 12 is mounted on the side of the detection frame 8 away from the first valve stem 5. A rotating handle 13 is mounted on the side of the second valve stem 12 away from the detection frame 8. A threaded rotating rod 3 is mounted inside the valve ball 2, penetrating the valve ball 2 and the first valve stem 5, and is embedded inside the detection frame 8. A first rotating fan blade 4 is installed on the side wall of the rod 3 located inside the valve ball 2. A rotating screw 9 is provided on the side wall of the threaded rotating rod 3 located inside the detection frame 8. A second rotating fan blade 10 is installed on the side wall of the rotating screw 9 away from the threaded rotating rod 3. Gas detection sensors 11 are installed on the side of the two second rotating fan blades 10 that are close to each other. A servo motor 7 is installed on the side of the ball valve protective tube 1 that is close to the detection frame 8. A rotating worm gear 6 is fixedly installed on the output shaft of the servo motor 7. The rotating worm gear 6 is embedded in the ball valve protective tube 1, and the rotating worm gear 6 and the first valve rod 5 are matched in a threaded rotation.

[0028] In a specific embodiment, connecting discs 15 are fixedly installed at both ends of the ball valve protective tube body 1. The connecting discs 15 are symmetrically arranged about the central axis of the ball valve protective tube body 1, and both connecting discs 15 have the same inner diameter as the ball valve protective tube body 1. A sealing gasket 16 is provided on the side of the ball valve protective tube body 1 near the valve ball 2. The sealing gasket 16 is symmetrically arranged about the central axis of the valve ball 2, and both sealing gaskets 16 are matched with the sealing of the valve ball 2. A ball groove 14 is provided on the inner side of the valve ball 2, and the ball groove 14 has the same inner diameter as the ball valve protective tube body 1. The central axes of the ball valve protective tube body 1, valve ball 2, threaded rotating rod 3, first valve stem 5, second valve stem 12, and rotating handle 13 are all aligned, and the threaded rotating rod 3 is aligned with the valve ball. The ball 2, the first valve stem 5, the detection frame 8, and the rotating screw 9 are all rotationally matched. The first rotating fan blade 4 is arranged in a circular array with the center line of the threaded rotating rod 3 as the origin and is evenly distributed. The second rotating fan blade 10 is arranged in a circular array with the center line of the rotating screw 9 as the origin and is evenly distributed. The wind directions of the two second rotating fan blades 10 are opposite. The side wall of the detection frame 8 is hollow. The rotating screw 9 is rotationally matched with the inner side of the detection frame 8. The second rotating fan blade 10 and the gas detection sensor 11 are symmetrically arranged with the central axis of the rotating screw 9 as the axis of symmetry. The two gas detection sensors 11 are electrically connected to the servo motor 7. The first valve stem 5 penetrates the ball valve protective tube 1, and the ball 2 and the first valve stem 5 are rotationally matched with the inner side of the ball valve protective tube 1.

[0029] Example: When using the gas ball valve with automatic shut-off function for gas leak detection, firstly, match the connecting plate 15 on the protective tube 1 of the gas ball valve with automatic shut-off function for gas leak detection with the gas pipeline where the gas ball valve with automatic shut-off function for gas leak detection is to be used. Then, connect the connecting plate 15 to the gas pipeline where the gas ball valve with automatic shut-off function for gas leak detection is to be used. After connection, rotate the rotating handle 13 according to the usage requirements. Rotating the handle 13 rotates the second valve stem 12 connected to it. Through the detection frame 8 and the first valve stem 5, the valve ball 2 is driven to rotate, thereby opening and closing the gas ball valve with automatic shut-off function for gas leak detection.

[0030] When the gas ball valve with automatic shut-off function for gas leak detection is in the open state, gas flows inside the ball valve protective tube 1 and the ball 2 of the gas ball valve with automatic shut-off function for gas leak detection. Since the gas flows in a single direction, the first rotating fan blade 4 rotates due to the gas flow. The rotation of the first rotating fan blade 4 causes the threaded rotating rod 3 fixedly connected to it to rotate. The rotation of the threaded rotating rod 3 causes the rotating screw 9 fixedly connected to it to rotate. The rotation of the rotating screw 9 causes the second rotating fan blade 10 fixedly connected to it to rotate. The rotation of the second rotating fan blade 10 accelerates the air flow speed and draws the gas near the gas ball valve with automatic shut-off function for gas leak detection into the detection frame 8, so that the gas is detected by the gas detection sensor 11 in the detection frame 8.

[0031] When the gas detection sensor 11 detects that there is no gas in the gas, it determines that there is no gas leak hazard nearby, and the gas ball valve with gas leak detection and automatic shut-off function does not make any adjustments. When the gas detection sensor 11 detects that there is gas in the gas, it determines that there is a gas leak hazard nearby. At this time, the gas detection sensor 11 transmits a hazard alarm to the servo motor 7. After receiving the command, the servo motor 7 starts and works to make its output shaft rotate. The rotation of the output shaft makes the rotating worm gear 6 connected to it rotate. The rotation of the rotating worm gear 6 makes the first valve stem 5 connected to it rotate. The rotation of the first valve stem 5 makes the valve ball 2 connected to it rotate, so that the valve ball 2 rotates to the ball groove 14 to fit against the side wall of the ball valve protective tube body 1, thereby closing the gas ball valve with gas leak detection and automatic shut-off function, stopping the flow of gas, and issuing a gas leak warning.

[0032] After the gas leak hazard is eliminated, operate in the same order as opening to turn the handle 13 again to open the gas ball valve with automatic shut-off function for gas leak detection. After use, operate in the reverse order of opening and installation to close and remove the gas ball valve with automatic shut-off function for gas leak detection, and restore it to its original state.

[0033] In summary, this gas ball valve utilizes a first rotating fan blade on the inner side of the valve ball to drive a threaded rotating rod, which in turn drives a second rotating fan blade to rotate. This draws nearby gas into the detection frame for gas leak detection, accelerating airflow and ensuring thorough gas detection. This avoids undetectable leak blind spots, improving detection accuracy and optimizing detection results. Furthermore, by connecting a servo motor to a gas detection sensor, when the sensor detects a gas leak, it drives the servo motor to rotate a worm gear. This worm gear rotates the first valve stem, causing the valve ball to rotate and close the gas ball valve, preventing further gas leakage and mitigating damage. This also enhances the safety of the gas ball valve.

[0034] In summary, this gas ball valve has a simple structure, is easy to use, provides thorough gas leak detection with high accuracy and good detection effect, and can promptly close the gas ball valve when a gas leak occurs, thus improving the safety of its use.

[0035] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A gas ball valve with automatic shut-off function for gas leak detection, comprising a ball valve protective pipe body (1), characterized in that, A valve ball (2) is provided inside the protective tube body (1) of the ball valve. The top of the valve ball (2) is installed on the first valve stem (5). A detection frame (8) is installed on the side of the first valve stem (5) away from the valve ball (2). A second valve stem (12) is installed on the side of the detection frame (8) away from the first valve stem (5). A rotating handle (13) is installed on the side of the second valve stem (12) away from the detection frame (8). A threaded rotating rod (3) is installed inside the valve ball (2). The threaded rotating rod (3) passes through the valve ball (2) and the first valve stem (5), and the threaded rotating rod (3) is embedded inside the detection frame (8). The threaded rotating rod (3) is located on the inner side of the valve ball (2). A first rotating fan blade (4) is installed on the end side wall. A rotating screw (9) is provided on the end side wall of the threaded rotating rod (3) located inside the detection frame (8). A second rotating fan blade (10) is installed on the end side wall of the rotating screw (9) away from the threaded rotating rod (3). A gas detection sensor (11) is installed on the side of the two second rotating fan blades (10) that are close to each other. A servo motor (7) is installed on the side of the ball valve protective tube (1) close to the detection frame (8). A rotating worm gear (6) is fixedly installed on the output shaft of the servo motor (7). The rotating worm gear (6) is embedded in the ball valve protective tube (1), and the rotating worm gear (6) and the first valve stem (5) are matched in a threaded rotation.

2. A gas ball valve with automatic shut-off function for gas leak detection as described in claim 1, characterized in that, Both ends of the ball valve protective tube (1) are fixedly installed with connecting discs (15). The connecting discs (15) are symmetrically arranged with the central axis of the ball valve protective tube (1) as the axis of symmetry, and both connecting discs (15) are consistent with the inner diameter of the ball valve protective tube (1).

3. A gas ball valve with automatic shut-off function for gas leak detection as described in claim 1, characterized in that, A sealing gasket (16) is provided on the side of the ball valve protective tube (1) near the ball valve body (2). The sealing gasket (16) is symmetrically arranged with the central axis of the ball valve body (2) as the axis of symmetry, and both sealing gaskets (16) are matched with the sealing of the ball valve body (2).

4. A gas ball valve with automatic shut-off function for gas leak detection as described in claim 1, characterized in that, The inner side of the valve ball (2) is provided with a ball groove (14), and the ball groove (14) has the same inner diameter as the ball valve protective tube (1).

5. A gas ball valve with automatic shut-off function for gas leak detection as described in claim 1, characterized in that, The central axes of the ball valve protective tube (1), the ball valve body (2), the threaded rotating rod (3), the first valve stem (5), the second valve stem (12), and the rotating handle (13) are all aligned, and the threaded rotating rod (3) is rotated in harmony with the ball valve body (2), the first valve stem (5), the detection frame (8), and the rotating screw (9).

6. A gas ball valve with automatic shut-off function for gas leak detection as described in claim 1, characterized in that, The first rotating fan blade (4) is arranged in a ring array with the center line of the threaded rotating rod (3) as the origin and is evenly distributed. The second rotating fan blade (10) is arranged in a ring array with the center line of the rotating screw (9) as the origin and is evenly distributed. The wind directions of the two second rotating fan blades (10) are opposite.

7. A gas ball valve with automatic shut-off function for gas leak detection as described in claim 1, characterized in that, The side wall of the detection frame (8) is hollowed out. The rotating screw (9) rotates and matches the inner side of the detection frame (8). The second rotating fan blade plate (10) and the gas detection sensor (11) are symmetrically arranged with the central axis of the rotating screw (9) as the axis of symmetry. Both gas detection sensors (11) are electrically connected to the servo motor (7).

8. A gas ball valve with automatic shut-off function for gas leak detection as described in claim 1, characterized in that, The first valve stem (5) penetrates the ball valve protective tube (1), and the valve ball (2) and the first valve stem (5) are both rotated and matched with the inner side of the ball valve protective tube (1).

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