Self-operated multifunctional regulating full-bore spherical stop valve

Abstract

This application relates to the field of shut-off valves and discloses a self-operated, multi-functional, regulating full-bore spherical shut-off valve, belonging to the field of valve technology. The valve includes a valve body, a shut-off actuator, and a regulating actuator. The core feature is that the valve body contains coaxially arranged independent V-shaped hemispheres and a full-bore ball, which are respectively connected to the corresponding actuators via regulating and shut-off valve stems. The regulating actuator adopts a self-operated pressure-driven structure, driving the V-shaped hemisphere to rotate by collecting outlet pressure, achieving precise flow regulation and closed-loop control; the shut-off actuator drives the full-bore ball to rotate, achieving rapid pipeline opening and closing. The V-shaped hemisphere has a self-cleaning opening on its surface, and the full-bore ball ensures unobstructed fluid flow, effectively reducing pressure loss. This invention integrates flow regulation and pipeline shut-off functions, solving the problems of large space occupation, difficult coordinated control, and high operating costs associated with traditional dual-valve combinations.

Description

Technical Field

[0001] This invention relates to the field of shut-off valve technology, specifically to a self-operated, multi-functional, regulating, full-bore ball shut-off valve. Background Technology

[0002] In existing industrial pipeline systems (such as petroleum, chemical, metallurgical, power, water supply and drainage, etc.), flow regulation and pipeline shut-off are two core control requirements. To achieve these two functions, the common practice in the industry is to use a combination of "regulating valve + shut-off valve". That is, the flow rate of the pipeline is controlled by regulating valve, and the pipeline is opened and closed by shut-off valve. This separate combination scheme has been the mainstream of industrial applications for a long time, in order to meet the basic requirements for fluid parameter control in the production process.

[0003] However, with the increasing integration of industrial equipment, this traditional combination method has gradually revealed significant technical defects. First, the parallel or series installation of two sets of valves occupies a large amount of pipeline space, which greatly increases the complexity of pipeline layout. Especially in space-constrained installation environments, it is often difficult to achieve reasonable pipeline integration. Second, the coordinated control of the two sets of valves is extremely difficult. When switching between regulating and shut-off operating conditions, the system response often lags, which can easily lead to flow fluctuations, abnormal pressure, or sealing failures in the pipeline, thereby affecting the operational stability of the entire system. Finally, due to the need to purchase, install, and maintain two independent sets of valve equipment, the company's production and operating costs remain high, and the cumbersome maintenance work also increases the workload of personnel.

[0004] Based on the aforementioned industry pain points, developing an innovative valve device with a compact structure that can achieve both precise flow regulation and rapid shut-off across the entire pipe diameter has become a key issue that urgently needs to be addressed in the current valve technology field. The ideal solution should be a self-powered structure that does not require external energy. Through innovative design of the internal structure, it should be ensured that the flow regulation and pipe shut-off functions can operate independently and work together efficiently, thereby improving the service life of the valve and the stability of the system while effectively reducing the operating costs of industrial production. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a self-operated, multi-functional, regulating, full-bore ball shut-off valve, which solves the problem that parallel or series installation of two valves occupies a large amount of pipeline space and greatly increases the complexity of pipeline layout.

[0006] To achieve the above objectives, the present invention employs the following technical solution: A self-operated, multi-functional, regulating, full-bore ball shut-off valve includes a valve body, a shut-off actuator, and a regulating actuator. The valve body has a through fluid channel with an inlet and an outlet at both ends. The valve body is characterized by having a valve seat coaxially mounted inside the valve body, and the valve seat has independently arranged V-shaped hemispheres and full-bore balls. The V-shaped hemisphere is positioned close to the inlet end, and an adjusting valve stem is provided on the outer periphery of the V-shaped hemisphere. The adjusting valve stem is connected to the adjusting actuator for driving the V-shaped hemisphere to rotate to change the opening degree and achieve flow regulation. The full-bore ball is positioned near the outlet end, and a shut-off valve stem is provided on the outer periphery of the full-bore ball. The shut-off valve stem is fixedly connected to the shut-off actuator and is used to drive the full-bore ball to rotate in order to cut off and open the pipeline. The V-shaped hemisphere and the full-bore ball are fitted together to form a sealed fit. The adjusting actuator and the cutting-off actuator independently control the movement of the V-shaped hemisphere and the full-bore ball through a pressure feedback control loop.

[0007] Preferably, the regulating actuator adopts a self-powered pressure-driven structure, and its interior is connected to the outlet end through a water outlet conduit. A feedback mechanism is installed on the regulating valve stem to provide real-time feedback on the rotation angle of the V-shaped hemisphere and perform closed-loop control.

[0008] Preferably, the surface of the V-shaped hemisphere is provided with a V-shaped opening, and the edge of the V-shaped opening is provided with a sharp structure, which has a self-cleaning function.

[0009] Preferably, the power pipeline of the cut-off actuator is equipped with a solenoid valve group for switching the pipeline cut-off condition according to the instructions of the feedback mechanism.

[0010] This invention provides a self-operated, multi-functional, regulating full-bore ball shut-off valve. It has the following advantages: 1. This invention integrates flow regulation and pipeline shut-off functions into a single valve body, effectively solving the problems of large space occupation and complex layout of traditional control valve and shut-off valve combination. By reducing the number of valves installed, the pipeline layout is simplified, significantly reducing procurement, installation and maintenance costs, and avoiding the response lag and flow fluctuation problems caused by dual valve collaborative control, greatly improving the system's installation space adaptability and operational stability.

[0011] 2. The V-shaped hemispherical design in this invention has equal percentage flow characteristics and an adjustable ratio of up to 120:1, which can meet the requirements of fine flow control. Its V-shaped opening adopts a sharp structure and has a self-cleaning function, which can effectively cut off fibers and particulate impurities in the fluid to prevent blockage. At the same time, the full-bore ball ensures that the pipeline has low flow resistance characteristics in the conducting state, minimizes pressure loss, and provides reliable sealing performance when cut off.

[0012] 3. This invention adopts a self-powered structure that does not require external energy. It drives the actuator by collecting the fluid pressure in the pipeline. This design not only reduces the energy consumption of industrial production, but is also not limited by external energy supply, making it widely applicable to various industrial pipeline systems such as petroleum, chemical, metallurgy, power and water supply and drainage, greatly expanding the application scenarios. Attached Figure Description

[0013] Figure 1 This is a front view schematic diagram of the present invention; Figure 2 This is a cross-sectional schematic diagram of the valve body of the present invention; Figure 3 This is a rear view schematic diagram of the present invention.

[0014] Among them, 1. Valve body; 2. Valve seat; 3. V-shaped hemisphere; 4. Full-bore ball; 5. Regulating valve stem; 6. Shut-off valve stem; 7. Inlet end; 8. Outlet end; 9. Shut-off actuator; 10. Regulating actuator; 11. Feedback mechanism; 12. Inlet water conduit; 13. Outlet water conduit; 14. Solenoid valve; 15. Solenoid valve; 16. Solenoid valve; 17. Solenoid valve. Detailed Implementation

[0015] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0016] Example: Please see the appendix Figure 1 - Appendix Figure 3The present invention provides a self-operated multi-functional regulating full-bore ball shut-off valve. Its overall structure is based on the valve body 1. The valve body 1 has a valve seat 2 installed inside. The valve seat 2 is coaxially arranged with the fluid passage in the valve body. The V-shaped hemisphere 3 and the full-bore ball 4 are coaxially arranged and cooperate between the valve seat 2 to ensure that the fluid flows under controlled conditions. The top and sides of the valve body 1 are respectively equipped with regulating actuators 10 and shut-off actuators 9 through flanges. The two actuators are responsible for driving the corresponding balls inside to complete the flow regulation and pipeline shut-off tasks, respectively.

[0017] Regarding the mechanical connection of the internal components, the V-shaped hemisphere 3 and the full-bore ball 4 are independent of each other within the valve body 1 and can rotate around their own axis. The V-shaped hemisphere 3 is located near the inlet end 7, and the full-bore ball 4 is located near the outlet end 8. The shaft of the V-shaped hemisphere 3 is fixedly connected to the regulating valve stem 5, and the shaft of the full-bore ball 4 is fixedly connected to the shut-off valve stem 6. Both the regulating valve stem 5 and the shut-off valve stem 6 pass through the housing of the valve body 1 through a sealing assembly, achieving a sealed connection between the valve stem and the valve body while ensuring that the valve stem can rotate.

[0018] In terms of flow regulation function, the regulating actuator 10 is connected to the V-shaped hemisphere 3 through the regulating valve stem 5. One end of the regulating valve stem 5 is fixedly connected to the V-shaped hemisphere 3, and the other end extends to the outside of the valve body 1. The end is provided with a gear mechanism, which forms a transmission connection with the rack inside the regulating actuator 10. The regulating actuator 10 is provided with an regulating rod, which drives the regulating valve stem 5 to rotate through the diaphragm to change the opening degree of the V-shaped hemisphere 3. In addition, a feedback mechanism 11 is installed on the regulating valve stem 5 to capture the rotation angle of the V-shaped hemisphere 3 in real time and realize closed-loop control.

[0019] Regarding the pipeline shut-off function, the shut-off actuator 9 is fixedly connected to the full-bore ball 4 via the shut-off valve stem 6. The action of the shut-off actuator 9 is driven by pressure. The power circuit is connected to the pipeline system via the inlet conduit 12. The fixed connection between the shut-off actuator 9 and the shut-off valve stem 6 allows the torque generated by the actuator to be directly transmitted to the full-bore ball 4, driving it to rotate 90°. This allows the full-bore ball 4 to switch between a conducting state where the through hole and the fluid channel are coaxial, and a shut-off state perpendicular to the fluid channel.

[0020] In terms of fluid and control loop, the diaphragm cavity of the regulating actuator 10 is connected to the outlet end 8 of the valve body 1 through the outlet end conduit 13 to realize real-time pressure acquisition. Solenoid valves 14, 15, 16 and 17 are arranged on the control pipeline: Solenoid valves 14 and 15 are connected in series on the outlet end conduit 13 to control the pressure feedback loop of the regulating actuator 10; Solenoid valves 16 and 17 are arranged in the pipeline of the inlet end conduit 12 to switch the pressure source supply of the actuator 9. Through the on / off logic of the above solenoid valve group, the automatic switching between regulating and shut-off conditions is realized.

[0021] Working Principle: The working process of this device is based on the automatic switching and closed-loop control of two working conditions: flow regulation and pipeline cutoff. In the flow regulation condition, the full-bore ball 4 is in a fully open state, and its internal through hole is coaxial with the fluid channel. The fluid enters from the inlet end 7 of the valve body 1, passes through the V-shaped opening of the V-shaped hemisphere 3 and the through hole of the full-bore ball 4, and finally flows out from the outlet end 8. The regulating actuator 10 collects the fluid pressure at the outlet end 8 in real time through the outlet end conduit 13. When the pressure deviates from the preset value, the regulating actuator 10 generates displacement, which drives the gear on the regulating valve stem 5 to rotate through the regulating rod, thereby driving the V-shaped hemisphere 3 to rotate and change the overlapping area of ​​the V-shaped opening and the fluid channel: when the outlet pressure is too high, the opening of the V-shaped opening decreases to reduce the flow rate; when the outlet pressure is too low, the opening of the V-shaped opening increases to increase the flow rate. At the same time, the feedback mechanism 11 provides real-time feedback on the opening of the V-shaped hemisphere 3, forming a closed-loop regulation to ensure that the flow rate is stable within the preset range.

[0022] In the cut-off condition, when the fluid pressure at the outlet 8 reaches the preset cut-off pressure, the feedback mechanism 11 receives a signal and controls the solenoid valve group to operate: closing the solenoid valve 14 and opening the solenoid valve 15, causing the regulating actuator 10 to stop working; simultaneously opening the solenoid valve 16 and closing the solenoid valve 17, guiding the pressure source to the cut-off actuator 9, which drives the cut-off valve stem 6 to rotate 90°, thereby driving the full-bore ball 4 to rotate 90°, making its through hole perpendicular to the fluid passage, and the spherical surface of the ball tightly fitting the valve seat 2, achieving complete pipeline cut-off. When the fluid pressure at the inlet 7 drops to the preset conduction pressure, the system opens the solenoid valve 17 and closes the solenoid valve 16, driving the cut-off actuator 9 to drive the cut-off valve stem 6 to rotate 90° in the opposite direction, causing the full-bore ball 4 to reset to the conduction state. Subsequently, the solenoid valve group switches to restore the operation of the regulating actuator 10, realizing automatic interlocking control of flow regulation and pipeline cut-off.

[0023] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A self-operated, multi-functional, regulating, full-bore ball shut-off valve, characterized in that, include: The valve body (1) has a fluid passage inside, which has an inlet end (7) and an outlet end (8). A flow regulation component is disposed in the fluid channel and includes a V-shaped hemisphere (3) and a regulating actuator (10) that drives the V-shaped hemisphere (3) to rotate. The pipeline cut-off assembly is disposed in the fluid channel and includes a full-bore ball (4) and a cut-off actuator (9) that drives the full-bore ball (4) to rotate. The V-shaped hemisphere (3) and the full-bore ball (4) are connected in series along the fluid flow direction. The regulating actuator (10) and the cutting-off actuator (9) independently control the rotation of the V-shaped hemisphere (3) and the full-bore ball (4).

2. The self-operated multi-functional regulating full-bore ball shut-off valve according to claim 1, characterized in that, A valve seat (2) is installed inside the valve body (1). The V-shaped hemisphere (3) and the full-bore ball (4) are coaxially arranged between the valve seat (2), and their spherical surfaces are matched to achieve fluid sealing.

3. The self-operated multi-functional regulating full-bore ball shut-off valve according to claim 1, characterized in that, The regulating actuator (10) is connected to the V-shaped hemisphere (3) via the regulating valve stem (5). The regulating actuator (10) is configured to automatically drive the V-shaped hemisphere (3) to rotate according to the fluid pressure at the outlet end (8) in order to regulate the fluid flow rate.

4. The self-operated multi-functional regulating full-bore ball shut-off valve according to claim 1, characterized in that, The cut-off actuator (9) is fixedly connected to the full-bore ball (4) via the cut-off valve stem (6), and the cut-off actuator (9) is configured to drive the full-bore ball (4) to switch between the on state and the off state.

5. A self-operated, multi-functional, regulating, full-bore ball shut-off valve according to claim 1, characterized in that, It also includes a control pipeline system, which includes an inlet pipe (12) and an outlet pipe (13). The inlet pipe (12) is equipped with a solenoid valve (16) and a solenoid valve (17), and the outlet pipe (13) is equipped with a solenoid valve (14) and a solenoid valve (15), which are used to realize the switching control of the working conditions of the regulating actuator (10) and the shut-off actuator (9).

6. A self-operated, multi-functional, regulating, full-bore ball shut-off valve according to claim 3, characterized in that, A feedback mechanism (11) is installed on the regulating valve stem (5). The feedback mechanism (11) is used to capture the rotation angle of the V-shaped hemisphere (3) in real time and feed it back to the regulating actuator (10) to form a closed-loop flow regulation.

7. A self-operated, multi-functional, regulating, full-bore ball shut-off valve according to claim 1, characterized in that, The regulating actuator (10) and the shut-off actuator (9) are respectively mounted on the outside of the valve body (1) via flanges.

8. A self-operated, multi-functional, regulating, full-bore ball shut-off valve according to claim 1, characterized in that, The V-shaped hemisphere (3) has a V-shaped opening on its spherical surface, and the edge of the V-shaped opening is configured to have a shearing function so as to achieve self-cleaning when fluid passes through.

9. A self-operated, multi-functional, regulating, full-bore ball shut-off valve according to claim 1, characterized in that, The cut-off actuator (9) drives the full-bore ball (4) to rotate within a 90-degree range so that the through hole of the full-bore ball (4) is aligned with or perpendicular to the axial direction of the fluid channel.

10. A self-operated, multi-functional, regulating, full-bore ball shut-off valve according to claim 3, characterized in that, The diaphragm cavity of the regulating actuator (10) is connected to the outlet end (8) of the valve body (1) through the outlet end conduit (13). The regulating actuator (10) drives the regulating valve stem (5) to rotate the V-shaped hemisphere (3) according to the pressure difference.

Images