Bidirectional flow resistance axial adjustable low-noise adjusting ball valve and method

Abstract

The invention belongs to the technical field of valve devices, and particularly discloses a low-noise adjusting ball valve with bidirectional flow resistance axially adjustable and a method. Comprising a valve body, an adjusting type valve seat and a valve element ball body, flow guide groove throttling discs are arranged in the valve element ball body and a valve element cavity, the flow guide groove throttling discs are arranged perpendicular to the flow direction, and throttling hole throttling discs parallel to the flow guide groove throttling discs are further arranged on the two sides of the flow guide groove throttling discs. The throttling hole throttling disc and the inner wall of the valve element ball body base body are coaxially matched, and the throttling hole throttling disc and the inner wall of the valve element ball body base body slide in the left-right axial direction without rotation so that a liquid spiral cavity formed between the flow guide groove throttling disc and the throttling hole throttling disc can be adjusted, and a driving device is arranged on the valve element ball body base body. The driving device is used for driving the flow guide groove throttling disc to move back and forth in the flow direction so as to control the size of the spiral cavity and further change the flow resistance value. The flow resistance can be flexibly adjusted under different working conditions, and the high requirements of fine chemical engineering, pharmacy and other industries for flow control precision are met.

Description

Technical Field

[0001] The present invention belongs to the technical field of valve devices, and more specifically, relates to a low-noise regulating ball valve with bidirectional flow resistance and axially adjustable flow resistance and a method thereof. Background Art

[0002] In the ship piping system, the fluid resistance of the valve is a performance parameter that must be considered, because the resistance of the piping system will involve the parameter selection of pumps and other dynamic equipment. The existing ship piping system optimizes the selection of pumps and other dynamic equipment by limiting the maximum flow resistance of the valve. In some special occasions, it is hoped that the regulating valve can achieve the non-disassembly adjustment function, but the maximum flow resistance limit of the regulating ball valve used in the existing process cannot be adjusted, and the resistance calculation error of the system cannot be dynamically elastically compensated, and the two-way throttling adjustment function cannot be achieved. It is easy to cause noise, vibration and other conditions during work, the working reliability is poor, and the regulating components are inconvenient to disassemble and repair. Specifically reflected in:

[0003] Limited flow resistance adjustment capability: Traditional ball valves usually adopt a simple open-close structure, which makes it difficult to achieve precise adjustment of fluid flow resistance. In situations where precise flow control is required, such as fine chemicals, pharmaceuticals and other industries, this lack of flow resistance adjustment capability will lead to low flow control accuracy, affecting product quality and production efficiency. Although some existing control valves can adjust the flow resistance by changing the opening of the valve core, the adjustment range is limited, and flow fluctuations are prone to occur during the adjustment process, which cannot meet the precise control requirements under complex working conditions.

[0004] The noise problem is prominent: Under high pressure difference or high flow rate conditions, the traditional ball valve will generate a lot of noise when the fluid passes through it, which not only damages the hearing of the operator, but also may cause noise pollution to the surrounding environment, which does not meet the requirements of modern industry for environmental protection and working environment. The generation of noise may also cause the vibration of the internal parts of the valve to increase, reducing the service life and reliability of the valve.

[0005] Insufficient two-way flow performance: Most traditional ball valves are designed for one-way flow and cannot meet the needs of two-way fluid delivery. In some systems that require two-way flow, such as the feed and discharge systems of some chemical reactors, multiple valves need to be installed to achieve two-way control, which increases the complexity and cost of the system. Even if some ball valves can flow in both directions, it is often difficult to balance the flow resistance adjustment performance and sealing performance under two-way working conditions, resulting in reduced system operation efficiency.

[0006] Low intelligence: Most existing ball valves are manually operated or simply electrically operated, lacking intelligent control functions. In modern industrial production with an increasingly high degree of automation, such low-intelligence valves cannot be integrated with advanced control systems, and cannot achieve functions such as remote monitoring, fault diagnosis, and automatic adjustment. Ball valves lacking intelligent control cannot monitor the fluid state and valve working state in real time during operation, making it difficult to detect and handle potential problems in a timely manner, reducing the reliability and operating efficiency of the system. Summary of the invention

[0007] In view of the above defects or improvement needs of the prior art, the present invention provides a low-noise regulating ball valve and method with axially adjustable flow resistance in both directions. The valve core ball structure is uniquely designed, including a guide groove throttling disc and a throttling hole throttling disc, as well as an adjustable liquid spiral chamber. This solution can achieve precise control of the flow resistance. The throttling disc in the valve core ball can be adjusted according to the needs of the non-removable external adjustment disc relative axial distance and rotation angle, so as to dynamically change the shape and size of the liquid spiral chamber, and then achieve precise adjustment of the flow resistance value. This design enables the valve to flexibly adjust the flow resistance under different working conditions, meeting the high requirements of fine chemical, pharmaceutical and other industries for flow control accuracy. Through the precise adjustment of the throttling disc, the flow resistance can be fine-tuned to ensure high precision of flow control. It is suitable for a variety of fluid characteristics and working conditions, including complex environments such as high pressure, low pressure, and high viscosity.

[0008] To achieve the above object, according to one aspect of the present invention, a low-noise regulating ball valve with bidirectional flow resistance and axially adjustable flow resistance is provided, comprising:

[0009] A valve body 1, wherein the valve body 1 is provided with a first valve body flow channel 1a and a second valve body flow channel 1b for bidirectional flow;

[0010] The regulating valve seat 2 is respectively arranged at the inner ends of the first valve body flow channel 1a and the second valve body flow channel 1b;

[0011] The valve core ball 3 comprises a valve core ball base 3d, a valve core cavity is arranged in the valve core ball base 3d, a guide groove throttling disc 3a is arranged in the valve core cavity, the guide groove throttling disc 3a is arranged perpendicular to the flow direction, and throttling hole throttling discs 3b arranged parallel to the guide groove throttling disc 3a are also provided on both sides of the guide groove throttling disc 3a, and the throttling hole throttling disc 3b is coaxially matched with the inner wall of the valve core ball base 3d and slides axially left and right without rotation, so as to adjust the "liquid spiral cavity" formed between the guide groove throttling disc 3a and the throttling hole throttling disc 3b, and a driving device is provided on the valve core ball base 3d, and the driving device is used to drive the guide groove throttling disc 3a to move back and forth along the flow direction, so as to control the size of the spiral cavity and thus change the flow resistance value.

[0012] As a further preferred embodiment, a plurality of throttle hole throttle discs 3b are provided, and the plurality of throttle hole throttle discs 3b are symmetrically arranged about the guide groove throttle disc 3a, but the throttle holes on each throttle hole throttle disc 3b are adjusted and arranged as needed.

[0013] As a further preferred embodiment, a valve stem assembly 4 is further provided on the valve body 1, and the valve stem assembly 4 is connected to the valve core ball base 3d by a vertical thread along the flow direction to drive the valve core ball base 3d to rotate, thereby changing the flow area.

[0014] As a further preferred embodiment, the valve stem assembly 4 is rotatably sealed and connected to the valve body 1 via a seal.

[0015] As a further preferred embodiment, the driving device includes a throttling disc adjusting screw 5, and the throttling disc adjusting screw 5 includes a screw driving part 5b and a screw driven buckle 5a. The screw driving part 5b is threadedly connected to the screw driven buckle 5a, and the screw driving part 5b is rotated to drive the screw driven buckle 5a to move back and forth along the flow direction.

[0016] As a further preferred embodiment, the screw driven buckle 5a comprises a threaded connection sleeve and a buckle, the threaded connection sleeve is threadedly connected to the screw driving member 5b, and the buckle is clamped on the outer side wall of the guide groove throttling disc 3a;

[0017] The active screw member 5 b is disposed through the valve body 1 and is sealed and connected to the valve body 1 .

[0018] As a further preferred embodiment, the throttling hole throttling disc 3b and the inner wall of the valve core ball base 3d are both provided with gear grooves that are meshed and connected with each other.

[0019] As a further preferred embodiment, the throttle hole throttling disc 3b is fixedly connected to the inner wall of the valve core ball base 3d by a clamping ring 3c.

[0020] As a further preferred embodiment, the first valve body sealing O-ring 2a on the regulating valve seat 2 forms a seal between the valve body 1 and the regulating valve seat 2;

[0021] The second valve body sealing O-ring 2b on the regulating valve seat 2 forms a seal between the valve core ball 3 and the regulating valve seat 2. The first valve body sealing O-ring 2a and the second valve body sealing O-ring 2b have a temperature resistance range of -40°C to 300°C.

[0022] According to another aspect of the present invention, a throttling adjustment method for a low-noise regulating ball valve with bidirectional flow resistance and axially adjustable flow resistance is provided, which is implemented by using a low-noise regulating ball valve of any embodiment or a combination of multiple embodiments as described above.

[0023] In general, the above technical solution conceived by the present invention has the following technical advantages compared with the prior art:

[0024] 1. The present invention has a unique valve core sphere structure, including a guide groove throttling disc and a throttling hole throttling disc, as well as an adjustable liquid spiral chamber. This solution can achieve precise control of the flow resistance. The throttling disc in the valve core sphere can be adjusted by axial movement distance as needed, thereby dynamically changing the shape and size of the liquid spiral chamber, thereby achieving precise adjustment of the flow resistance value. This design enables the valve to flexibly adjust the flow resistance under different working conditions, meeting the high requirements for flow control accuracy in the fine chemical, pharmaceutical and other industries. Through the precise adjustment of the throttling disc, the flow resistance can be fine-tuned to ensure high precision of flow control. It is suitable for a variety of fluid characteristics and working conditions, including complex environments such as high pressure, low pressure, and high viscosity.

[0025] 2. The present invention can effectively reduce the noise generated when the fluid passes through through the unique throttling disc structure and liquid spiral cavity design. Under high pressure difference or high flow rate conditions, traditional ball valves tend to generate large noise, while this solution significantly reduces the noise level by optimizing the fluid flow path and reducing fluid turbulence and impact.

[0026] 3. The ball valve of the present invention has a two-way flow capacity and can realize the stable flow of fluid in two directions. At the same time, by optimizing the valve seat sealing structure and using high temperature resistant and corrosion resistant sealing materials (such as O-rings), the sealing performance under the two-way flow condition is ensured. This two-way flow and efficient sealing design enables the valve to meet the needs of more complex working conditions and reduce the number and complexity of valves in the system.

[0027] 4. The present invention realizes precise adjustment of the liquid spiral cavity and dynamic control of the flow resistance through intelligent control and remote monitoring technology, combined with the dynamic adjustment of the axial position of the guide groove throttling disc, the rotation angle of the throttling disc of the throttling hole, and the design parameters of the guide groove and the throttling hole. It significantly improves the accuracy and flexibility of fluid control: through the multi-parameter PID control algorithm, the axial position of the guide groove throttling disc is adjusted at the same time, and the shape and size of the liquid spiral cavity can be dynamically optimized according to the real-time monitored flow, pressure and temperature data, thereby realizing precise control of the flow resistance. This precise flow resistance adjustment capability enables the valve to adapt to more complex working conditions and more sophisticated flow control requirements, improving the efficiency of the industrial production process and product quality. At the same time, the remote monitoring and manual adjustment functions further enhance the flexibility of the system, and the operator can adjust the valve anytime and anywhere to ensure that the system is always in the best operating state. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1It is a structural schematic diagram of a low-noise regulating ball valve with bidirectional flow resistance and axially adjustable flow resistance according to an embodiment of the present invention;

[0029] Figure 2 It is a schematic diagram of the flow channel layout of the valve core ball involved in an embodiment of the present invention;

[0030] Figure 3 Schematic diagram of a liquid spiral cavity formed between throttling discs according to an embodiment of the present invention;

[0031] Figure 4 It is a schematic diagram of a regulating valve disc regulating screw involved in an embodiment of the present invention;

[0032] Figure 5 A schematic diagram of a regulating valve according to an embodiment of the present invention realizing a throttle disc position adjustment function;

[0033] Figure 6 It is a schematic diagram of the valve seat sealing structure involved in an embodiment of the present invention.

[0034] In all the drawings, the same figure marks represent the same technical features, specifically: 1-valve body, 1a-first valve body flow channel, 1b-second valve body flow channel, 2-adjustable valve seat assembly, 2a-first valve body sealing O-ring, 2b-second valve body sealing O-ring, 2c-adjustable valve seat base, 3-valve core ball assembly, 3a-throttling hole throttling disc, 3b-guide groove throttling disc, 3c-clamping ring, 3d-valve core ball base, 3e-valve core ball channel, 4-valve stem assembly, 5-throttling disc adjusting screw, 5a-screw follower buckle, 5b-screw active part. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0036] Example 1

[0037] like Figure 1As shown, a low-noise regulating ball valve with bidirectional flow resistance and axially adjustable flow resistance is provided in this embodiment, comprising: a valve body 1, wherein the valve body 1 is provided with a first valve body flow channel 1a and a second valve body flow channel 1b for bidirectional flow; an regulating valve seat 2, which is respectively arranged at the inner ends of the first valve body flow channel 1a and the second valve body flow channel 1b; a valve core ball 3, wherein the valve core ball 3 comprises a valve core ball base 3d, wherein a valve core cavity is provided in the valve core ball base 3d, wherein a guide groove throttling disc 3a is provided in the valve core cavity, and the guide groove throttling disc 3a is perpendicular to the flow The guide groove throttling disc 3a is arranged in the direction of the flow, and throttling hole throttling discs 3b arranged parallel to the guide groove throttling disc 3a are also provided on both sides of the guide groove throttling disc 3a, and the throttling hole throttling disc 3b is coaxially matched with the inner wall of the valve core spherical base 3d and slides axially left and right without rotation, so as to adjust the "liquid spiral cavity" formed between the guide groove throttling disc 3a and the throttling hole throttling disc 3b. The valve core spherical base 3d is provided with a driving device, which is used to drive the guide groove throttling disc 3a to move back and forth along the flow direction, so as to control the size of the spiral cavity and thus change the flow resistance value.

[0038] As a further preferred embodiment, a plurality of throttle hole throttle discs 3b are provided, and the plurality of throttle hole throttle discs 3b are symmetrically arranged about the guide groove throttle disc 3a, but the throttle holes on each throttle hole throttle disc 3b are adjusted and arranged as needed.

[0039] As a further preferred embodiment, the valve body 1 is further provided with a valve stem assembly 4, which is connected to the valve core ball base 3d by a vertical thread along the flow direction to drive the valve core ball base 3d to rotate, thereby changing the flow area. In this embodiment, the valve stem assembly 4 includes a rotary motor for driving the valve core ball base 3d to rotate. Accordingly, a cavity is provided on the valve core ball 3 for the driving device to rotate relative to the valve core ball 3.

[0040] As a further preferred embodiment, the valve stem assembly 4 is rotatably sealed and connected to the valve body 1 via a seal.

[0041] As a further preferred embodiment, the driving device includes a throttling disc adjusting screw 5, and the throttling disc adjusting screw 5 includes a screw driving part 5b and a screw driven buckle 5a. The screw driving part 5b is threadedly connected to the screw driven buckle 5a, and the screw driving part 5b is rotated to drive the screw driven buckle 5a to move back and forth along the flow direction.

[0042] As a further preferred embodiment, the screw driven buckle 5a includes a threaded connection sleeve and a buckle, the threaded connection sleeve is threadedly connected to the screw active part 5b, and the buckle is clamped on the outer side wall of the guide groove throttling disc 3a.

[0043] The active screw member 5 b is disposed through the valve body 1 and is sealed and connected to the valve body 1 .

[0044] As a further preferred embodiment, the throttling hole throttling disc 3b and the inner wall of the valve core ball base 3d are both provided with gear grooves that are meshed and connected with each other.

[0045] As a further preferred embodiment, the throttle disc 3b of the throttle hole is fixedly connected to the inner wall of the valve core ball base 3d by a snap ring 3c. In this way, the throttle disc of the throttle hole can be quickly replaced.

[0046] As a further preferred embodiment, the first valve body sealing O-ring 2a on the regulating valve seat 2 forms a seal between the valve body 1 and the regulating valve seat 2; the second valve body sealing O-ring 2b on the regulating valve seat 2 forms a seal between the valve core ball 3 and the regulating valve seat 2, and the temperature resistance range of the first valve body sealing O-ring 2a and the second valve body sealing O-ring 2b is -40°C to 300°C.

[0047] According to another aspect of the present invention, a throttling adjustment method for a low-noise regulating ball valve with bidirectional flow resistance and axially adjustable flow resistance is provided, which is implemented by using a low-noise regulating ball valve of any embodiment or a combination of multiple embodiments as described above.

[0048] In one embodiment of the present invention, the shape of the throttling hole or the guide groove opening can be triangular, semicircular, fan-shaped, etc., and the spacing can be distributed in 6 equal parts, 8 equal parts, etc. The throttling disc of this structure is only a manifestation of structural innovation, and its specific parameters are not specified.

[0049] Example 2

[0050] like Figure 1 As shown: the flow resistance adjustable low noise regulating ball valve in this embodiment is mainly composed of a valve body 1, an adjustable valve seat 2, a valve core ball 3, a valve stem 4, a throttling disc regulating device 5, etc.

[0051] like Figure 1 As shown, the valve body 1 is provided with a first valve body flow channel 1a and a second valve body flow channel 1b, and an adjustable valve seat 2 is installed at the inner end of the first valve body flow channel 1a and the second valve body flow channel 1b respectively, and the two adjustable valve seats are arranged coaxially, and the valve core ball 3 is arranged in the inner cavity of the valve body 1 and installed between the two adjustable valve seats 2, and the surface of the valve core ball 3 is in contact with the sealing surface of the adjustable valve seat 2, and the flow channel of the valve core ball assembly 3 is provided with mutually independent replaceable and removable multi-layer throttling discs.

[0052] like Figure 1 As shown, an adjusting window is provided at the center of the adjusting valve seat base 1, and the adjusting window can be processed into different shapes as required, and a variety of different adjusting flow characteristics can be obtained by replacing the throttle hole and throttle disc.

[0053] like Figure 2As shown, when the throttling hole throttling disc 3a and the guide groove throttling disc 3b in the valve core ball flow channel are arranged symmetrically to the center of the valve stem, the regulating ball valve in the example of the present invention realizes a two-way throttling regulating function and achieves installation without flow direction requirements.

[0054] like Figure 3 As shown, the adjusting screw active member 5b is installed on the valve body by using a bearing, and is connected to the screw follower 5a by using a spiral. The active member rotates to drive the follower to slide left and right.

[0055] like Figure 4 , Figure 5 As shown, the flow channel space between the throttling hole throttling disc 3a and the guide groove throttling disc 3b in the flow channel of the valve core ball 3 forms a "liquid spiral chamber", and the spiral chamber size can be controlled and the flow resistance value can be changed by rotating the active screw member 5a to drive the driven screw buckle 5b to move left and right, thereby changing the relative installation distance of the throttling disc in the flow channel of the valve core ball 3.

[0056] like Figure 6 As shown, the valve body sealing O-ring 2a on the regulating valve seat 2 forms a seal between the valve body 1 and the valve seat 2; the valve core ball sealing O-ring 2b on the regulating valve seat 2 forms a seal between the valve core ball 3 and the valve seat 2. The sealing member is preferably a fluoroether O-ring, and the long-term working temperature range can be between -40°C and 300°C.

[0057] The working process and working principle of the device are as follows: the medium enters from the port of the valve body flow channel 1a or the port of the valve body flow channel 1b, passes through the adjustable valve seat 2 and enters the valve core ball flow channel 3. When the medium flows through the throttling disc in the valve core ball channel 3, it passes through the throttling disc 3a of the throttling hole, the throttling disc 3b of the guide groove and the throttling of the "liquid spiral cavity" between 3a and 3b. The rotation of the screw active part 5a drives the screw driven buckle 5b to move horizontally to the left and right, thereby changing the relative installation distance of the throttling disc in the flow channel of the valve core ball 3 to control the change of the flow resistance value. The flow channel of the valve core ball 3 is relatively long, which creates conditions for setting more different flow resistance values ​​in the flow channel of the valve core ball 3, so that the adjustable flow resistance value of the present invention reaches 10 or even higher. In addition, due to the unique structural design of the throttling disc adjustment screw combined with the "liquid spiral cavity", the present invention can realize the flow resistance adjustment function under non-disassembly conditions, which is convenient for installation, debugging and maintenance.

[0058] Example 3

[0059] In one embodiment of the present invention, a bidirectional flow resistance axially adjustable low-noise regulating ball valve is also integrated with a control system, which is used to achieve precise adjustment of the liquid spiral cavity and dynamic control of the flow resistance. The details are as follows:

[0060] This embodiment adds a dynamic adjustment function for the axial position of the guide groove throttling disc and the design parameters of the guide groove and throttling hole. It includes:

[0061] Sensor module: Add position sensor and angle sensor inside the valve core ball to monitor the axial position of the throttling disc of the guide groove. Keep pressure, flow and temperature sensors to monitor the fluid status in real time.

[0062] Actuator module: Add a stepper motor or servo motor to accurately control the axial movement distance of the guide groove throttling disc. Keep the motor-driven throttling disc adjustment screw to adjust the axial position of the guide groove throttling disc.

[0063] Controller module: Upgrade the microcontroller to increase processing power to support complex control algorithms and multi-parameter adjustment. Add a storage module to store the design parameters of the guide groove and throttle hole.

[0064] Communication module: retain the wireless communication module to support remote monitoring and data transmission. Add a Bluetooth module to facilitate on-site debugging and parameter setting.

[0065] Data collection and processing: real-time collection of position, angle, pressure, flow and temperature data, and improved data accuracy through filtering algorithms. Dynamic adjustment function for design parameters of guide grooves and throttle holes is added.

[0066] Control algorithm module: adopts multi-parameter PID control algorithm to adjust the axial position of the throttling disc of the guide groove at the same time. According to the preset flow resistance target value, the shape and size of the liquid spiral cavity are dynamically adjusted.

[0067] User interface module: Add liquid spiral cavity adjustment function in the web and mobile application interface, support users to manually set the design parameters of the guide groove and throttle hole. Provide real-time data visualization to show the shape and flow resistance changes of the liquid spiral cavity.

[0068] Dynamic adjustment of the liquid spiral cavity: By adjusting the axial position of the throttling disc of the guide groove, the shape and size of the liquid spiral cavity can be dynamically changed. According to the flow resistance target value, the design parameters of the liquid spiral cavity are automatically optimized to achieve the best flow resistance control effect.

[0069] Precise control of flow resistance: Combined with pressure, flow and temperature data, the design parameters of the guide groove and throttle hole are adjusted in real time to achieve precise control of flow resistance. A manual adjustment function is provided to allow users to adjust the shape and flow resistance value of the liquid spiral cavity according to actual needs.

[0070] Remote monitoring and data recording: Operators can view the status and flow resistance of the liquid spiral cavity in real time through the Web or mobile application, and make manual adjustments. The system automatically records operating data, generates historical reports, and supports data analysis and optimization.

[0071] Among them, the sensor module includes:

[0072] Position sensor: High-precision linear displacement sensor is used, with a measuring range of 0-100mm and an accuracy of ±0.1mm. Angle sensor: High-precision rotary encoder is used, with a measuring range of 0-360° and an accuracy of ±0.1°. Pressure sensor: High-precision piezoresistive pressure sensor is used, with a measuring range of 0-10MPa and an accuracy of ±0.5%. Flow sensor: Electromagnetic flowmeter or vortex flowmeter is used, with a measuring range of 0-1000L / min and an accuracy of ±1%. Temperature sensor: PT100 platinum resistance temperature sensor is used, with a measuring range of -40℃~300℃ and an accuracy of ±0.5℃.

[0073] The actuator module includes: Motor drive: DC brushless motor with rated power of 10W and speed range of 0-3000rpm, which is controlled by PWM speed regulation to adjust the axial position of the throttle disc of the guide groove. A stepper motor or servo motor is added to accurately control the rotation angle of the throttle disc of the throttle hole. Throttle disc adjustment screw: high-precision ball screw with pitch of 1mm, maximum stroke of 100mm and accuracy of ±0.01mm is used.

[0074] The controller module includes: Microcontroller: It uses high-performance ARM Cortex-M7, with a main frequency of 216MHz, and has a rich peripheral interface (such as SPI, I2C, UART) and a large-capacity storage module. Control algorithm: It uses a multi-parameter PID control algorithm and adjusts the axial position of the throttling disc of the guide groove at the same time to achieve dynamic adjustment of the liquid spiral cavity and precise control of the flow resistance.

[0075] The communication modules include: Wireless communication: Using NB-IoT module, supporting low-power wide area network communication, and the data transmission rate can reach up to 100kbps. Bluetooth module: used for on-site debugging and parameter setting, supporting short-range wireless communication.

[0076] In this embodiment, the position sensor is installed on the axial moving track of the throttling disc of the guide groove and fixed by mechanical connection. The angle sensor is installed on the rotating shaft of the throttling disc of the throttling hole and fixed by mechanical connection. The pressure sensor is installed at the inlet of the valve body flow channel through a threaded interface. The flow sensor is installed in the middle position of the valve body flow channel and connected by a flange. The temperature sensor is installed at the outlet of the valve body flow channel through a threaded interface. The motor in the motor and the screw rod is connected to the throttling disc adjusting screw rod through a coupling to adjust the axial position of the throttling disc of the guide groove. Screw rod and throttling disc: The screw rod driven buckle is clamped with the outer wall of the guide groove throttling disc, and the axial movement of the throttling disc is realized by the rotation of the screw rod. The controller and the sensor are connected through the SPI or I2C interface to realize data acquisition. The controller and the actuator control the motor speed and direction through PWM signals, and control the number of steps and direction of the stepper motor through digital signals. The controller and the communication module are connected through the UART interface to realize data transmission.

[0077] In a preferred embodiment of the present invention, the flow resistance R of the liquid spiral cavity can be calculated by the following formula:

[0078] R=f(Q,θ,x)

[0079] Where: Q is the flow rate, in L / min. θ is the rotation angle of the throttle disc of the throttle hole, in degrees. x is the axial position of the throttle disc of the guide groove, in mm. f is the flow resistance function, obtained by experimental fitting.

[0080] Assuming that the flow resistance has a nonlinear relationship with flow rate, angle and position, it can be approximated by the following formula:

[0081] R=a·Q b +c·θ d +e·x f

[0082] Among them: a, b, c, d, e, f are fitting parameters determined by experiments.

[0083] In this embodiment, a multi-parameter PID control algorithm is used to simultaneously adjust the axial position of the guide groove throttling disc and the rotation angle of the throttling disc of the throttling hole to achieve the target flow resistance. The formula is as follows:

[0084]

[0085]

[0086] Where: u 1 ( t ) is the axial position control output of the guide groove throttling disc. 2 (t) is the rotation angle control output of the throttle disc of the throttle hole.1 (t) is the difference between the target flow resistance and the actual flow resistance. 2 (t) is the difference between the target flow rate and the actual flow rate. K p1 , K i1 , K d1 K is the PID parameter of the throttling disc of the guide groove. p2 , K i2 , K d2 PID parameters for the throttle orifice throttle disc.

[0087] In a preferred embodiment of the present invention, the design parameters of the guide groove and the throttle hole can be optimized by the following formula:

[0088] θ opt =g(Q target , x)

[0089] x opt =h(Q target ,θ)

[0090] Where: θ opt is the rotation angle of the throttle disc after optimization. opt is the optimized axial position of the guide groove throttling disc. target is the target flow rate. g and h are optimization functions obtained through experimental fitting.

[0091] In this embodiment, by combining intelligent control and remote monitoring technology, dynamic adjustment of the liquid spiral cavity and precise control of the flow resistance can be achieved to meet the needs under different working conditions.

[0092] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A low-noise regulating ball valve with bidirectional flow resistance and axially adjustable flow resistance, characterized in that: include: A valve body (1), wherein the valve body (1) is provided with a first valve body flow channel (1a) and a second valve body flow channel (1b) for bidirectional circulation; An adjustable valve seat (2) is respectively arranged at the inner ends of the first valve body flow channel (1a) and the second valve body flow channel (1b); A valve core ball (3), the valve core ball (3) comprising a valve core ball base (3d), a valve core cavity being provided in the valve core ball base (3d), a guide groove throttling disc (3a) being provided in the valve core cavity, the guide groove throttling disc (3a) being arranged perpendicular to the flow direction, throttling hole throttling discs (3b) being arranged parallel to the guide groove throttling disc (3a) being provided on both sides, the throttling hole throttling disc (3b) being coaxially matched with the inner wall of the valve core ball base (3d) and axially sliding left and right without rotation, so as to adjust a "liquid spiral cavity" formed between the guide groove throttling disc (3a) and the throttling hole throttling disc (3b), and a driving device being provided on the valve core ball base (3d), the driving device being used to drive the guide groove throttling disc (3a) to move back and forth along the flow direction, so as to control the size of the spiral cavity and thus change the flow resistance value.

2. A two-way flow resistance axially adjustable low-noise regulating ball valve according to claim 1, characterized in that: The throttle hole throttle disc (3b) is provided in plurality, and the plurality of throttle hole throttle discs (3b) are arranged symmetrically with respect to the guide groove throttle disc (3a), but the throttle holes on each throttle hole throttle disc (3b) are adjusted and arranged as required.

3. A two-way flow resistance axially adjustable low-noise regulating ball valve according to claim 1, characterized in that: The valve body (1) is also provided with a valve stem assembly (4), and the valve stem assembly (4) is connected to the valve core ball base (3d) by vertical threads along the flow direction to drive the valve core ball base (3d) to rotate, thereby changing the flow area.

4. A two-way flow resistance axially adjustable low-noise regulating ball valve according to claim 1, characterized in that: The valve stem assembly (4) is rotatably sealed and connected to the valve body (1) via a sealing member.

5. The low-noise regulating ball valve with bidirectional flow resistance and axially adjustable flow resistance according to claim 1, characterized in that: The driving device comprises a throttling disc adjusting screw (5), the throttling disc adjusting screw (5) comprising a screw driving member (5b) and a screw driven buckle (5a), the screw driving member (5b) being threadedly connected to the screw driven buckle (5a), and the screw driving member (5b) is rotated to drive the screw driven buckle (5a) to move back and forth along the flow direction.

6. A two-way flow resistance axially adjustable low-noise regulating ball valve according to claim 4, characterized in that: The screw driven buckle (5a) comprises a threaded connection sleeve and a buckle, the threaded connection sleeve is threadedly connected to the screw driving member (5b), and the buckle is clamped on the outer side wall of the guide groove throttling disc (3a); The active screw member (5b) is disposed through the valve body (1) and is sealedly connected to the valve body (1).

7. A two-way flow resistance axially adjustable low-noise regulating ball valve according to claim 1, characterized in that: The inner walls of the throttling hole throttling disc (3b) and the valve core ball base (3d) are both provided with gear grooves that mesh with each other.

8. The low-noise regulating ball valve with bidirectional flow resistance and axially adjustable flow resistance according to claim 1, characterized in that: The throttling hole throttling disc (3b) is snap-fastened and fixedly connected to the inner wall of the valve core spherical body base (3d) via a snap ring (3c).

9. The low-noise regulating ball valve with bidirectional flow resistance and axially adjustable flow resistance according to claim 1, characterized in that: The first valve body sealing O-ring (2a) on the regulating valve seat (2) forms a seal between the valve body (1) and the regulating valve seat (2); The second valve body sealing O-ring (2b) on the regulating valve seat (2) forms a seal between the valve core ball (3) and the regulating valve seat (2), and the first valve body sealing O-ring (2a) and the second valve body sealing O-ring (2b) have a temperature resistance range of -40°C to 300°C.

10. A throttling adjustment method for a low-noise regulating ball valve with bidirectional flow resistance and axially adjustable flow resistance, characterized in that: This is achieved by using the low-noise regulating ball valve as described in any one of claims 1 to 9.

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