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

Abstract

The invention belongs to the technical field of valve devices, and particularly discloses a bidirectional flow resistance adjustable low-noise adjusting ball valve and a method. Comprising a valve body which is provided with a first valve body flow channel and a second valve body flow channel; the valve element ball comprises a first flow guide groove throttling disc, a plurality of throttling hole throttling discs and a rotation driving part, and the throttling hole throttling discs are arranged on the two sides of the first flow guide groove throttling disc in parallel at intervals. The first flow guide groove throttling disc and the throttling hole throttling disc are arranged on the first flow guide groove throttling disc so that a liquid spiral cavity can be formed in a flow channel space between the first flow guide groove throttling disc and the throttling hole throttling disc, and the rotation driving piece is used for driving the first flow guide groove throttling disc to rotate so as to adjust flow resistance generated during throttling. The pressure drop is reduced step by step when the throttling discs pass through, the pressure drop of each stage is not enough to generate cavitation, multi-stage throttling noise reduction is achieved, and adjustment of different flow resistance values can be achieved by adjusting the relative combination angle of the throttling discs in a non-disassembly scene.

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 adjustable bidirectional flow resistance and a method. Background Art

[0002] In the prior art, 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 controlling the limit of the maximum flow resistance of the valve. In some special occasions, it is hoped that the regulating valve can realize the non-disassembly adjustment function, but the maximum flow resistance limit of the regulating ball valve itself 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 realized. It is easy to cause noise, vibration and other conditions during work, and the working reliability is poor. It is inconvenient to disassemble and repair the regulating components. In addition, most of the existing valves do not have a dynamic adjustment function and cannot automatically adjust the flow resistance according to the real-time changes in the system working conditions. In actual operation, system parameters (such as flow, pressure, temperature) may fluctuate due to changes in external conditions. Traditional valves cannot respond to these changes in time, resulting in unstable system operation. Further, in the prior art, when the fluid passes through the valve, due to the unreasonable design of the throttling structure, turbulence and impact are easily generated, thereby causing high noise and vibration. This not only affects the working environment of operators, but may also cause fatigue damage to equipment and reduce the reliability and service life of the system. Summary of the invention

[0003] In response to the above defects or improvement needs of the prior art, the present invention provides a two-way adjustable flow resistance low-noise regulating ball valve and method, in which the ball is arranged in the valve body, the top of the ball is connected to the valve stem, and a multi-layer throttling disc is arranged at the flow guide hole of the ball, each disc is provided with a throttling hole, and adjacent throttling holes are not on the same axis. The outer diameter of the disc and the inner diameter of the ball channel are interference fit, and the relative installation position and combination of different throttling discs are changed by adjusting the external knob to realize the control of different flow resistance values.

[0004] To achieve the above object, according to one aspect of the present invention, a low-noise regulating ball valve with adjustable bidirectional flow resistance is provided, comprising:

[0005] 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;

[0006] 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;

[0007] The valve core ball 3 is arranged in the inner cavity of the valve body 1 and installed between the two regulating valve seats 2. The valve core ball 3 includes a first guide groove throttling disc 3a, a plurality of throttling hole throttling discs 3c and a rotating drive member, wherein the first guide groove throttling disc 3a is perpendicular to the axis of the first valve body flow channel 1a and is arranged in the middle of the inner cavity of the valve body 1, and the plurality of throttling hole throttling discs 3c are respectively and parallelly arranged on both sides of the first guide groove throttling disc 3a at intervals to form a "liquid spiral chamber" in the flow channel space between the first guide groove throttling disc 3a and the throttling hole throttling disc 3c, and the rotating drive member is used to drive the first guide groove throttling disc 3a to rotate to adjust the flow resistance generated during throttling.

[0008] As a further preferred embodiment, the rotating driving member includes a throttle disc adjusting device 5, and the throttle disc adjusting device 5 includes a knob follower 5a and a knob driving shaft 5b. The knob follower 5a is meshedly connected with the first guide groove throttle disc 3a, and the knob driving shaft 5b is fixedly connected to the knob follower 5a, and is used to drive the knob follower 5a to rotate, thereby driving the first guide groove throttle disc 3a to rotate, so as to adjust the angle of the first guide groove throttle disc 3a.

[0009] As a further preferred embodiment, the knob follower 5a and the outer periphery of the first guide groove throttling disc 3a are provided with gear grooves that mesh with each other.

[0010] As a further preferred embodiment, the knob follower 5a is also provided with a paddle, which is used to push the first guide groove throttling disc 3a along the flow direction under the pushing action of the knob driving shaft 5b to adjust the change of the flow resistance value on both sides of the first guide groove throttling disc 3a.

[0011] As a further preferred embodiment, the valve core ball 3 is provided with a through hole for accommodating the knob driving shaft 5b to pass through, and the knob driving shaft 5b is connected to the through hole through a bearing seal.

[0012] As a further preferred embodiment, a second guide groove throttling disc 3b is further provided between two adjacent throttling hole throttling discs 3c on the same side.

[0013] As a further preferred embodiment, the first guide groove throttling disc 3a and the second guide groove throttling disc 3b are both provided with a plurality of guide grooves, and the throttling hole throttling disc 3c is provided with a plurality of throttling holes.

[0014] As a further preferred embodiment, the guide grooves and throttling holes on the adjacent first guide groove throttling disc 3a and second guide groove throttling disc 3b are not collinear along the flow direction.

[0015] 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.

[0016] 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.

[0017] According to another aspect of the present invention, a throttling adjustment method for a low-noise regulating ball valve with adjustable bidirectional flow resistance is provided, which is implemented by using a low-noise regulating ball valve according to any one of the above embodiments or a combination of multiple embodiments.

[0018] In general, the above technical solution conceived by the present invention has the following technical advantages compared with the prior art:

[0019] (1) The present invention arranges multiple layers of throttling discs in the valve core ball channel. When the medium passes through the throttling discs, the pressure drop is reduced step by step. The pressure drop of each stage is not enough to produce cavitation, thereby realizing multi-stage throttling noise reduction. Different flow resistance values ​​can be adjusted by adjusting the relative combination angle of the throttling discs in a non-disassembly scenario, thereby realizing adjustable flow resistance under the premise of the same specification and model. The modular throttling disc assembly realizes modular replacement and reduces the difficulty of maintenance.

[0020] (2) In the present invention, the medium passes through the throttling holes / guiding grooves on adjacent throttling discs, and the space between adjacent throttling discs forms a liquid spiral cavity, thereby dissipating fluid energy. By adjusting the throttling discs and controlling the relative installation angles between the throttling discs, better throttling and flow resistance control effects are achieved, and the gap in the prior art that the flow resistance value of the valve cannot be changed is solved.

[0021] (3) In the present invention, under the premise of the same specifications and models, throttling disc combinations with different flow rates and pressure difference values ​​can be provided, which can conveniently and quickly meet the needs of users with different valve resistance values. For the same specification and size, there can be more than 10 maximum flow resistance limit values ​​to choose from.

[0022] (4) In the present invention, a tooth-shaped fit is adopted between the throttling disk and the valve core ball channel, and the design of the throttling disk adjustment device in the valve core ball channel facilitates the user to quickly and conveniently adjust the staggered angles of the throttling holes of different throttling disks to achieve adjustment and control of different flow resistance values.

[0023] (5) In the present invention, the axial retaining ring positioning design of the throttling disc in the valve core ball channel reduces the technical requirements for maintenance personnel and realizes the rapid maintenance of the throttling assembly.

[0024] (6) In the present invention, the regulating window is arranged on the regulating valve seat, and a variety of different flow characteristics can be obtained simply by replacing the valve seat.

[0025] (7) In the present invention, the O-ring seal on the regulating valve seat can enhance the sealing performance between the valve seat and the valve body and the valve core ball, and O-rings with different temperature resistance ranges can be selected according to the medium temperature. This structural design makes the medium of the present invention applicable to a wider temperature range.

[0026] (8) The present invention combines a multi-stage throttling structure with an intelligent adjustment system. The low-noise regulating ball valve can not only achieve high-precision dynamic flow resistance adjustment, but also achieve dynamic optimization and remote management through intelligent means. This design significantly improves the overall performance and operating efficiency of the system, while reducing maintenance costs, and has broad application prospects and significant technical advantages. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of a low-noise regulating ball valve with adjustable bidirectional flow resistance involved in an embodiment of the present invention;

[0028] 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;

[0029] Figure 3 It is a schematic diagram of a throttling disc adjusting screw of a regulating valve involved in an embodiment of the present invention;

[0030] Figure 4 A schematic diagram of the relative angle adjustment function of the throttling disc of the regulating valve according to an embodiment of the present invention;

[0031] Figure 5 It is a schematic diagram of the structure of the regulating valve seat involved in an embodiment of the present invention.

[0032] 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-first guide groove throttling disc, 3b-second guide groove throttling disc, 3c-throttling hole throttling disc, 3d-valve core ball base, 3e-valve core ball channel, 4-valve stem assembly, 5-throttling disc adjustment device, 5a-knob active shaft, 5b-knob driven buckle. DETAILED DESCRIPTION

[0033] 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.

[0034] like Figure 1 As shown, a bidirectional flow resistance adjustable low-noise regulating ball valve provided in an embodiment of the present invention comprises: a valve body 1, on which a first valve body flow channel 1a and a second valve body flow channel 1b are provided; 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, which is arranged in the inner cavity of the valve body 1 and installed between the two regulating valve seats 2, and the valve core ball 3 comprises a first guide groove throttling disc 3a, a plurality of throttling hole throttling discs 3c and a rotary A dynamic driving member, wherein the first guide groove throttling disc 3a is perpendicular to the axis of the first valve body flow channel 1a and is arranged in the middle of the inner cavity of the valve body 1, and a plurality of throttling hole throttling discs 3c are respectively and parallelly arranged on both sides of the first guide groove throttling disc 3a at intervals to form a "liquid spiral cavity" in the flow channel space between the first guide groove throttling disc 3a and the throttling hole throttling disc 3c, and the rotating driving member is used to drive the first guide groove throttling disc 3a to rotate so as to adjust the flow resistance generated during throttling.

[0035] As a further preferred embodiment, the rotating driving member includes a throttle disc adjusting device 5, and the throttle disc adjusting device 5 includes a knob follower 5a and a knob driving shaft 5b. The knob follower 5a is meshedly connected with the first guide groove throttle disc 3a, and the knob driving shaft 5b is fixedly connected to the knob follower 5a, and is used to drive the knob follower 5a to rotate, thereby driving the first guide groove throttle disc 3a to rotate, so as to adjust the angle of the first guide groove throttle disc 3a.

[0036] As a further preferred embodiment, the knob follower 5a and the outer periphery of the first guide groove throttling disc 3a are provided with gear grooves that mesh with each other.

[0037] As a further preferred embodiment, the knob follower 5a is also provided with a paddle, which is used to push the first guide groove throttling disc 3a along the flow direction under the pushing action of the knob driving shaft 5b to adjust the change of the flow resistance value on both sides of the first guide groove throttling disc 3a.

[0038] As a further preferred embodiment, the valve core ball 3 is provided with a through hole for accommodating the knob driving shaft 5b to pass through, and the knob driving shaft 5b is connected to the through hole through a bearing seal.

[0039] As a further preferred embodiment, a second guide groove throttling disc 3b is further provided between two adjacent throttling hole throttling discs 3c on the same side.

[0040] As a further preferred embodiment, the first guide groove throttling disc 3a and the second guide groove throttling disc 3b are both provided with a plurality of guide grooves, and the throttling hole throttling disc 3c is provided with a plurality of throttling holes.

[0041] As a further preferred embodiment, the guide grooves and throttling holes on the adjacent first guide groove throttling disc 3a and second guide groove throttling disc 3b are not collinear along the flow direction.

[0042] 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.

[0043] 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.

[0044] In one embodiment of the present invention, the throttling hole disc and the guide groove disc are alternately installed in the valve core ball flow channel and fixed by a clamping ring to facilitate disassembly and replacement.

[0045] The present invention includes a valve body, a valve core ball, a valve stem and a throttling disc swirl regulating device, wherein the valve body is provided with a valve inlet and a valve outlet, and the inner sides of the valve inlet and the valve outlet are provided with an adjustable valve seat, the valve core ball is arranged in the middle cavity of the valve body and installed between two valve seats, the valve core ball is connected to the valve stem above, the valve stem drives the valve core ball to rotate, and the surface of the valve core ball is matched with the valve seat. By designing a multi-layer throttling disc (including a throttling hole disc and a guide groove disc), multiple "liquid spiral cavities" are formed to achieve multi-stage throttling, thereby improving the accuracy and range of flow resistance regulation.

[0046] In order to further improve the intelligent control and monitoring of the entire valve, in one embodiment of the present invention, an intelligent sensor and controller are integrated to monitor the flow, pressure and temperature of the fluid in real time, and the angle of the throttling disc is automatically adjusted through a feedback mechanism to achieve dynamic flow resistance adjustment. Accordingly, it is also necessary to optimize the structure and flow channel design of the throttling disc to reduce the turbulence and impact of the fluid when it passes through and reduce the working noise.

[0047] In one embodiment, a multi-stage throttling disc group is arranged: the throttling hole disc 3c is designed with a multi-layer throttling hole disc, and throttling holes of different angles and sizes are distributed on each disc for preliminary throttling. The guide groove disc (3a, 3b) is designed with a multi-layer guide groove disc, and a spiral guide groove is provided on the disc, which cooperates with the throttling hole disc to form a "liquid spiral cavity" to further refine the flow resistance adjustment. Disc installation method: The throttling hole disc and the guide groove disc are alternately installed in the valve core ball flow channel and fixed by the clamping ring 3c for easy disassembly and replacement.

[0048] In one embodiment, the sensor module includes: a pressure sensor, a flow sensor and a temperature sensor are installed in the valve body 1 to monitor the parameters of the fluid in real time. Controller: An embedded microcontroller is used to calculate the optimal throttling angle according to the signal fed back by the sensor, and the throttling disc is driven to rotate by a motor. Driving device: A micro DC motor is used as the driving source to drive the throttling disc to rotate through a gear transmission mechanism. The motor receives instructions through the controller to achieve precise adjustment. Communication module: An integrated wireless communication module (such as Wi-Fi or Bluetooth) is used to upload the valve status data to a cloud platform or a local monitoring system, and receive remote instructions.

[0049] Working principle:

[0050] Fluid entry: The fluid enters from the valve body flow channel 1a or 1b, passes through the regulating valve seat 2 and enters the valve core ball flow channel 3d.

[0051] Multi-stage throttling: The fluid passes through the "liquid spiral cavity" formed by the throttling hole disc 3c and the guide groove disc (3a, 3b) in sequence, and after multi-stage throttling, the flow resistance gradually increases.

[0052] Intelligent regulation: The sensor monitors the flow, pressure and temperature of the fluid in real time, and transmits the data to the controller 6. The controller calculates the optimal throttling angle according to the preset regulation strategy, and drives the throttling disc to rotate through the motor 7 to dynamically adjust the flow resistance.

[0053] Remote monitoring: Through the communication module 9, the valve status data is uploaded to the cloud platform or local monitoring system. Users can view the valve status in real time through the mobile phone APP or monitoring interface, and remotely adjust the throttling parameters.

[0054] Example 2

[0055] The present embodiment will be further described below in conjunction with the accompanying drawings:

[0056] like Figure 1 As shown: the flow resistance adjustable low noise regulating ball valve in the embodiment of the present invention 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 adjusting device 5, etc.

[0057] like Figure 1 As shown, the valve body 1 is provided with a valve body flow channel 1a and a valve body flow channel 1b, and an adjustable valve seat 2 is installed at the inner end of the valve body flow channel 1a and the valve body flow channel 1b respectively, and the two adjustable valve seats are arranged coaxially. 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. The surface of the valve core ball 3 contacts 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.

[0058] like Figure 1As 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 throttling disc 3b.

[0059] like Figure 2 As shown, the guide groove throttling discs 3a, 3b and the throttling hole throttling disc 3c are installed in the valve core ball flow channel 3d to achieve a two-way throttling adjustment function.

[0060] 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.

[0061] like Figure 4 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 cavity", and the throttling disc meshing with it can be driven to rotate by the rotating device 5 to change the relative installation angle of the throttling disc in the flow channel of the valve core ball 3 to control the change of the flow resistance value.

[0062] like Figure 5 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.

[0063] The working process and working principle of the present invention are as follows:

[0064] As shown in the figure, the medium enters from the port of the valve body flow channel 1a or the port of the valve body flow channel 1b, and enters the valve core ball flow channel 3 through the adjustable valve seat 2. 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. Since the relative angle of the throttling disc hole and the groove is adjustable, the flow resistance generated during throttling also changes accordingly, and 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. Furthermore, due to the unique throttling disc adjustment device combined with the structural design of the "liquid spiral cavity", the present invention can realize the flow resistance adjustment function under non-disassembly conditions, which is convenient for installation, commissioning and maintenance.

[0065] Example 3

[0066] In this embodiment, in order to enable the sensor to monitor the flow rate, pressure and temperature of the fluid in real time and calculate the optimal throttling angle through the controller, it is necessary to combine sensor technology, signal processing, control algorithm and fluid mechanics principles.

[0067] 1. Sensor selection and data collection

[0068] (1) Sensor selection: Flow sensor: electromagnetic flowmeter or vortex flowmeter is used to measure the volume flow of conductive fluid. Pressure sensor: piezoresistive pressure sensor or capacitive pressure sensor is used to measure the pressure of fluid. Temperature sensor: thermal resistor (such as Pt100) or thermocouple is used to measure the temperature of fluid.

[0069] (2) Data acquisition. The sensor outputs analog signals and connects to the controller’s analog-to-digital converter (ADC). The controller collects sensor data at a fixed sampling frequency (e.g., 10 Hz) and performs filtering to eliminate noise.

[0070] 2 Controller design and adjustment strategy

[0071] (1) Controller hardware. An embedded microcontroller (such as ARM Cortex-M series) is used as the core control unit. An ADC module is used to collect sensor signals, and a PWM module is used to drive the motor to adjust the throttling angle. An integrated communication module (such as Wi-Fi or Bluetooth) is used for remote monitoring and parameter adjustment.

[0072] (2) Adjustment strategy. Target parameters: Set the target flow rate Q according to system requirements. target , Target pressure P target and target temperature T target Feedback regulation: The controller collects the current flow rate Q, pressure P and temperature T in real time and calculates the deviation from the target parameters. PID control algorithm: A PID controller is used to adjust the throttling angle according to the deviation to minimize the deviation.

[0073] 3. Throttle angle calculation formula. (1) Parameter definition: Q: current flow rate (unit: m 3 / s); P: current pressure (unit: Pa); T: current temperature (unit: ℃); Qtarget: target flow; Ptarget: target pressure; Ttarget: target temperature; Kp: proportional gain; Ki: integral gain; Kd: differential gain; θ: throttling angle (unit: degree); e Q : Flow deviation e Q =Q target -Q;e P : Pressure deviation e P =P target -P;e T : Temperature deviation eT =T target -T.

[0074] (2) PID control formula. The adjustment of the throttling angle is based on the comprehensive deviation of flow, pressure and temperature, and a weighted PID control strategy is adopted:

[0075] Flow deviation adjustment:

[0076]

[0077] Pressure deviation adjustment:

[0078]

[0079] Temperature deviation adjustment:

[0080]

[0081] Comprehensive throttle angle adjustment:

[0082] Δθ=αΔθ Q +βΔθ P +γΔθ T

[0083] Among them, α, β, γ are weight coefficients used to balance the contribution of flow, pressure and temperature to the throttling angle.

[0084] Final throttle angle:

[0085] θ new =θ old +Δθ

[0086] (3) Parameter adjustment. Proportional gain Kp: Adjust according to the system response speed. A larger value makes the system respond faster, but may cause oscillation. Integral gain Ki: Used to eliminate steady-state errors, but too large a value may cause system instability. Differential gain Kd: Used to suppress rapidly changing errors, but is sensitive to noise. Weight coefficients α, β, γ: Adjust according to actual working conditions. For example, in applications where flow control is the main focus, increase α.

[0087] 4. Implementation steps

[0088] (1) Sensor initialization. Initialize the flow, pressure and temperature sensors, calibrate the zero point and range, and set the sampling frequency (e.g. 10 Hz).

[0089] (2) Controller initialization. Initialize the PID controller parameters Kp, Ki, Kd and weight coefficients α, β, γ. Initialize the motor drive module and set the PWM frequency and resolution.

[0090] (3) Real-time data collection and processing. Collect sensor data Q, P, T regularly. Calculate the deviation eQ , e P ,e T .

[0091] (4) PID control and throttling angle adjustment. Calculate Δθ according to the PID formula Q , Δθ P , Δθ T . Calculate the comprehensive throttle angle adjustment Δθ. Update the throttle angle θ new The throttling disc is driven to rotate by the motor.

[0092] (5) Remote monitoring and feedback. Upload the current parameters Q, P, T and throttling angle θ to the monitoring system. Receive remote commands to adjust PID parameters or target parameters.

[0093] 5. Example parameters. Assume the target flow rate Q target =0.1m 3 / s, target pressure P target =1×10 5 Pa, target temperature T target =30℃.

[0094] Through the above-mentioned technical means and calculation formulas, real-time monitoring of fluid flow, pressure and temperature can be achieved, and the throttling angle can be dynamically adjusted through the intelligent controller to achieve the optimal flow resistance regulation effect.

[0095] 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 adjustable bidirectional 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); 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) is arranged in the inner cavity of the valve body (1) and installed between two regulating valve seats (2), wherein the valve core ball (3) comprises a first guide groove throttling disc (3a) and a plurality of throttling hole throttling discs (3c), wherein the first guide groove throttling disc (3a) is perpendicular to the axis of the first valve body flow channel (1a) and is arranged in the middle of the inner cavity of the valve body (1), and the plurality of throttling hole throttling discs (3c) are arranged in parallel and spaced apart on both sides of the first guide groove throttling disc (3a), so as to form a "liquid spiral cavity" in the flow channel space between the first guide groove throttling disc (3a) and the throttling hole throttling disc (3c); The valve core ball (3) also includes a rotation driving member, which is used to drive the first guide groove throttling disc (3a) to rotate so as to adjust the flow resistance generated during throttling.

2. A two-way flow resistance adjustable low noise regulating ball valve according to claim 1, characterized in that: The rotary drive member comprises a throttle disc adjusting device (5), the throttle disc adjusting device (5) comprising a knob follower (5a) and a knob driving shaft (5b), the knob follower (5a) being meshedly connected with the first guide groove throttle disc (3a), the knob driving shaft (5b) being fixedly connected with the knob follower (5a), and being used for driving the knob follower (5a) to rotate, thereby driving the first guide groove throttle disc (3a) to rotate, so as to adjust the angle of the first guide groove throttle disc (3a).

3. A two-way flow resistance adjustable low noise regulating ball valve according to claim 2, characterized in that: The knob follower (5a) and the outer periphery of the first guide groove throttling disc (3a) are provided with gear grooves that mesh with each other.

4. A two-way flow resistance adjustable low noise regulating ball valve according to claim 2, characterized in that: The knob follower (5a) is also provided with a paddle, which is used to push the first guide groove throttling disc (3a) to move along the flow direction under the pushing action of the knob driving shaft (5b), so as to adjust the change of the flow resistance value on both sides of the first guide groove throttling disc (3a).

5. A two-way flow resistance adjustable low noise regulating ball valve according to claim 2, characterized in that: The valve core ball (3) is provided with a through hole for accommodating the knob driving shaft (5b) to pass through, and the knob driving shaft (5b) is connected to the through hole via a bearing seal.

6. A two-way flow resistance adjustable low noise regulating ball valve according to claim 1, characterized in that: A second guide groove throttling disc (3b) is also provided between two adjacent throttling hole throttling discs (3c) on the same side.

7. A two-way flow resistance adjustable low noise regulating ball valve according to claim 5, characterized in that: The first guide groove throttling disc (3a) and the second guide groove throttling disc (3b) are both provided with a plurality of guide grooves, and the throttling hole throttling disc (3c) is provided with a plurality of throttling holes.

8. The low-noise regulating ball valve with adjustable bidirectional flow resistance according to claim 5, characterized in that: The guide grooves and throttling holes on the adjacent first guide groove throttling disc (3a) and second guide groove throttling disc (3b) are not collinear along the flow direction.

9. The low-noise regulating ball valve with adjustable bidirectional 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 adjustable bidirectional flow resistance, characterized in that: This is achieved by using the low-noise regulating ball valve described in any one of claims 1 to 9.

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