Valves and flow control methods

Abstract

The present invention discloses a valve and a flow control method, relating to the field of valve technology, wherein the valve includes a first valve body, a second valve body, a flow control component, a spectral analysis component and a control module, the flow control component includes a fixed seat, a driving mechanism and a plug, the fixed seat is arranged on the second valve body, the driving mechanism is arranged on the fixed seat, the plug is arranged on the movable end of the driving mechanism, the distance between the plug and the inner circumferential wall of the second channel is configured to be able to change when the plug moves, the spectral analysis component is arranged on the first valve body, the spectral analysis component is used to analyze the composition of the fluid in the first channel, the control module is arranged on the second valve body, the control module is electrically connected to the driving mechanism, and is communicatively connected to the spectral analysis component; the technical solution provided by the present invention can be used to match different types of fluids, avoid viscosity caused by different viscosities or tensions of the fluid, improve the adaptability of the valve, and expand the application scenarios.

Description

Technical Field

[0001] The present invention relates to the technical field of valves, and in particular to a valve and a flow control method. Background Art

[0002] In modern industrial automation and fluid control systems, valves, as key fluid control components, are widely used in the transmission and distribution of various liquids and gases in fields such as chemical, pharmaceutical, food processing and environmental monitoring.

[0003] Traditional valves can usually only control the flow of fluids through preset openings or pressures, and cannot be adaptively adjusted according to the specific type of fluid to achieve the optimal flow rate. Different fluids have different physical and chemical properties such as viscosity and tension, and therefore require different valve openings to meet their delivery requirements. Summary of the Invention

[0004] The main purpose of the present invention is to provide a valve and a flow control method, aiming to provide a valve that can be applied to different types of fluids and adjust the opening to adapt thereto.

[0005] To achieve the above-mentioned object, the valve proposed by the present invention comprises:

[0006] a first valve body having a first passage;

[0007] a second valve body connected to one end of the first valve body and having a second passage, wherein the second passage is communicated with the first passage;

[0008] a flow control assembly comprising a fixed seat, a drive mechanism, and a plug, wherein the fixed seat is disposed on the second valve body, the drive mechanism is disposed on the fixed seat, the plug is disposed on a movable end of the drive mechanism, and the distance between the plug and the inner peripheral wall of the second channel is configured to change when the plug moves;

[0009] a spectral analysis component, disposed in the first valve body, and configured to analyze the composition of the fluid in the first channel;

[0010] A control module is provided on the second valve body, the control module is electrically connected to the driving mechanism, and is in communication connection with the spectral analysis component.

[0011] In one embodiment, the second channel includes a first pipe segment and a second pipe segment that are sequentially connected, the first pipe segment is connected to the first channel, and the first pipe segment is configured to gradually shrink from the second pipe segment to the first channel;

[0012] The plug is configured to gradually shrink from an end close to the driving mechanism to an end away from the driving mechanism, and the outer peripheral wall of the plug can abut against or disengage from the inner peripheral wall of the first pipe section.

[0013] In one embodiment, the first valve body is provided with a mounting hole, the mounting hole being connected to the first channel and the outside;

[0014] The spectral analysis component includes a transmitting module, a receiving module and a processing module. The receiving module is connected to the transmitting module and the receiving module respectively. The processing module is communicatively connected to the control module. The transmitting module is arranged in the mounting hole and faces the first channel.

[0015] In one embodiment, the end portion of the mounting hole close to the first channel is covered with a light-transmitting plate, and the material of the light-transmitting plate is a highly transmissive quartz material.

[0016] In one embodiment, a pressure sensor is provided on a side of the plug facing the first valve body, and the pressure sensor is electrically connected to the control module;

[0017] The first valve body is provided with an explosion-proof opening, and the explosion-proof opening is provided with an explosion-relief plate.

[0018] In one embodiment, the driving mechanism is an electric telescopic rod, both ends of which are connected to the fixing seat and the plug, respectively, and the electric telescopic rod moves along the axial direction of the second channel;

[0019] A spring is provided on the outer periphery of the electric telescopic rod, and two ends of the spring are respectively in contact with the fixing seat and the plug.

[0020] In one embodiment, the fixing seat is provided with a plurality of flow holes, and the plurality of flow holes are arranged around the electric telescopic rod.

[0021] In one embodiment, part of the structure of the second valve body is located in the first channel, the second valve body is threadedly connected to the first valve body, and a sealing ring is provided at the end of the second valve body facing the first valve body, and the sealing ring abuts against the first valve body.

[0022] The present invention further provides a flow control method, which is applied to the valve as described above and comprises:

[0023] The control module analyzes the characteristic absorption spectrum of the fluid through the spectrum analysis component to obtain component information of the fluid;

[0024] The control module selects a fluid model matching the component information in a model library according to the component information of the fluid;

[0025] The control module controls the plug to move to a preset position in the fluid model.

[0026] In one embodiment, after the step of controlling the plug to move to a preset position in the fluid model by the control module, the method further includes:

[0027] The current fluid pressure collected by the pressure sensor is obtained. If the current fluid pressure is greater than or equal to a preset pressure threshold, the control module controls the plug to block the second channel.

[0028] The technical solution of the present invention proposes a valve and a flow control method applied to the valve, wherein the valve includes a first valve body, a second valve body, a flow control component, a spectral analysis component and a control module, the first valve body is provided with a first channel, the second valve body is provided with a second channel, the first channel and the second channel are connected, the flow control component includes a fixed seat, a driving mechanism and a plug, these three structures are all located in the second channel of the second valve body, and the fixed seat is arranged on the inner circumferential wall of the first valve body, the driving mechanism is arranged on the fixed seat, the plug is arranged at the movable end of the driving mechanism and can move axially along the second channel under the driving action of the driving mechanism to control the distance between the plug and the inner circumferential wall of the second channel, thereby adjusting the size of the flow channel. In actual control, the plug is initially in a blocked state, abutting against the inner wall of the second channel. At this time, the first channel and the second channel are in a non-connected state. After the fluid enters the first channel, it will be temporarily stored in the first channel. At this time, the spectral analysis component can analyze the transmittance of the fluid in the first channel and upload the analyzed data to the control module. The control module has a built-in model library that stores models of different types of fluids. By comparing the component information of the fluid with the fluid model, a matching fluid model is selected. The control module controls the driving mechanism to drive the plug to move until the plug and the inner wall of the second channel form a gap of suitable width for the fluid to pass through. By adjusting the plug, the flow rate of the fluid can be adjusted. The gap between the plug and the second channel is adjustable, which avoids the viscosity of the fluid due to different viscosities or tensions. It can be used with different types of fluids, improves its adaptability, and expands the application scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0030] Figure 1 A schematic structural diagram of a valve according to an embodiment of the present invention in a closed state;

[0031] Figure 2 for Figure 1 A partial enlarged view of point A in the middle;

[0032] Figure 3 A schematic structural diagram of an embodiment of a valve provided by the present invention in an open state;

[0033] Figure 4 for Figure 1 Schematic diagram of the structure of the internal flow channel of the valve;

[0034] Figure 5 for Figure 1 Schematic diagram of the structure of the flow control component;

[0035] Figure 6 for Figure 5 Schematic diagram of the structure of the middle fixed seat;

[0036] Figure 7 This is a control logic diagram of the flow control method provided by the present invention.

[0037] Description of Figure Numbers:

[0038] 100. Valve; 1. First valve body; 11. Internal thread; 12. Light-transmitting plate; 1a. First channel; 1b. Mounting hole; 1c. Snap-fit ​​hole; 1d. Explosion-proof vent; 1e. Explosion-venting plate; 2. Second valve body; 21. External thread; 22. Power supply interface; 23. Sealing ring; 2a. Second channel; 2a1. First pipe section; 2a2. Second pipe section; 2b. First annular arc surface; 3. Flow control assembly; 31. Fixing seat; 311. Flow hole; 32. Driving mechanism; 33. Plug; 331. Pressure sensor; 33a. Second annular arc surface; 34. Spring; 35. Sealing rubber sleeve; 4. Spectral analysis assembly; 41. Transmitter module; 42. Receiving module; 43. Processing module; 44. Housing; 441. Snap-fit ​​part; 5. Control module; 6. Battery; 7. Inlet flange; 7a. Liquid inlet port; 8. Outlet flange; 8a. Liquid outlet port.

[0039] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0040] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0041] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0042] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0043] In modern industrial automation and fluid control systems, valves 100, as key fluid control components, are widely used in the transmission and distribution of various liquids and gases in fields such as the chemical, pharmaceutical, food processing, and environmental monitoring industries. Traditional valves 100 typically only control fluid flow through a preset opening or pressure, and cannot adaptively adjust to the specific fluid type to achieve the optimal flow rate. Different fluids have varying physical and chemical properties, such as viscosity and tension, requiring different valve 100 openings to meet their delivery requirements.

[0044] In order to solve the above problems, the present invention proposes a valve 100, which aims to provide a valve 100 that can be applied to different types of fluids and adjust the opening to suit them. Figure 1 This is a schematic structural diagram of an embodiment of a valve 100 provided by the present invention.

[0045] Please refer to Figure 1The present invention proposes a valve 100, including a first valve body 1, a second valve body 2, a flow control component 3, a spectral analysis component 4 and a control module 5, the first valve body 1 has a first channel 1a, the second valve body 2 is connected to one end of the first valve body 1 and has a second channel 2a, the second channel 2a is connected to the first channel 1a, the flow control component 3 includes a fixed seat 31, a driving mechanism 32 and a plug 33, the fixed seat 31 is provided on the second valve body 2, the driving mechanism 32 is provided on the fixed seat 31, the plug 33 is provided at the movable end of the driving mechanism 32, the distance between the plug 33 and the inner circumferential wall of the second channel 2a is configured to be able to change when the plug 33 moves, the spectral analysis component 4 is provided on the first valve body 1, the spectral analysis component 4 is used to analyze the composition of the fluid in the first channel 1a, the control module 5 is provided on the second valve body 2, the control module 5 is electrically connected to the driving mechanism 32, and is communicatively connected to the spectral analysis component 4.

[0046] The valve 100 proposed in this application is generally commonly used in the field of oil refining. Oil refining refers to the process of converting crude oil into various petroleum products and chemical raw materials through a series of physical and chemical methods. This process mainly includes multiple steps such as crude oil fractionation, cracking, reforming, and hydrotreating. Through fractionation, crude oil is separated into fractions with different boiling points, such as gasoline, kerosene, diesel, and heavy oil. Processes such as cracking and reforming are used to improve the output and quality of light fuels, while producing high-octane gasoline and chemical raw materials. Hydrotreating is used to remove impurities such as sulfur and nitrogen, improving the cleanliness and performance of the products. Oil refining not only meets energy needs, but also provides an important raw material base for multiple industries such as chemicals, plastics, and rubber.

[0047] Different types of fluids have different parameters, such as density, viscosity, and liquid surface tension. These parameters can significantly affect the fluid's flow characteristics within a pipeline or through a valve body. For example, during the oil extraction and refining process, some oil products have complex molecular structures and contain a large amount of long-chain hydrocarbons, polycyclic aromatic hydrocarbons, asphaltenes, and colloids, such as heavy diesel and asphalt. These components have strong intermolecular forces, resulting in increased internal friction between molecules. As a result, these oil products typically have poor fluidity. For products with poor fluidity, the control module 5 in the valve 100 needs to further adjust and increase the opening of the plug 33 to meet the flow rate and delivery efficiency requirements. For another example, some light oil products, such as gasoline and light lubricating oil, have relatively simple molecular structures, small intermolecular forces, and better fluidity. The control module 5 needs to adjust and decrease the opening of the plug 33 to slow down the amount of fluid passing through per unit time, thereby achieving control. The valve 100 proposed in this application can ensure that different types of oil products have the same filling flow rate per unit time, thereby facilitating subsequent statistics and management of different oil products. The uniform flow rate makes it easier to measure and record the filling volume of each oil product, facilitating accurate statistics and inventory management during the production process.

[0048] The technical solution of the present invention proposes a valve 100 and a flow control method applied to the valve 100, wherein the valve 100 includes a first valve body 1, a second valve body 2, a flow control component 3, a spectral analysis component 4 and a control module 5, the first valve body 1 is provided with a first channel 1a, the second valve body 2 is provided with a second channel 2a, the first channel 1a and the second channel 2a are connected, the flow control component 3 includes a fixed seat 31, a driving mechanism 32 and a plug 33, these three structures are all located in the second channel 2a of the second valve body 2, and the fixed seat 31 is arranged on the inner circumferential wall of the first valve body 1, the driving mechanism 32 is arranged on the fixed seat 31, the plug 33 is arranged at the movable end of the driving mechanism 32 and can move axially along the second channel 2a under the driving action of the driving mechanism 32 to control the distance between the plug 33 and the inner circumferential wall of the second channel 2a, thereby adjusting the size of the flow channel. In actual control, the plug 33 is initially in a blocked state and abuts against the inner wall of the second channel 2a. At this time, the first channel 1a and the second channel 2a are in a non-connected state. After the fluid enters the first channel 1a, it will be temporarily stored in the first channel 1a. At this time, the spectral analysis component 4 can analyze the transmittance of the fluid in the first channel 1a and upload the analyzed data to the control module 5. The control module 5 has a built-in model library that stores models of different types of fluids. By comparing the component information of the fluid with the fluid model and selecting a matching fluid model, the control module 5 controls the driving mechanism 32 to drive the plug 33 to move until the plug 33 and the inner wall of the second channel 2a form a gap of suitable width for the fluid to pass through. By adjusting the plug 33, the flow rate of the fluid can be adjusted. The gap between the plug 33 and the second channel 2a is adjustable, which avoids the viscosity phenomenon caused by different viscosities or tensions of the fluid. It can be used with different types of fluids, improves its adaptability, and expands the application scenarios.

[0049] In the technical solution of the present application, the plug 33 is in the shape of a truncated cone as a whole. The radius of the end face of the plug 33 close to the first valve body 1 is smaller than the radius of the end face of the plug 33 away from the first valve body 1. Accordingly, the first pipe section 2a1 matched with the plug 33 is in the shape of a gradually expanding opening structure, gradually expanding from the first channel 1a to the second pipe section 2a2. When the valve 100 is in the closed state, please refer to the following for details. Figure 1The second annular arc surface 33a of the plug 33 abuts the inner circumferential wall of the first pipe section 2a1, namely the first annular arc surface 2b. Since the inclination angle and curvature of the first annular arc surface 2b and the second annular arc surface 33a match, there is no gap between the first annular arc surface 2b and the second annular arc surface 33a, and the fluid cannot flow through the first channel 1a to the second channel 2a. When the valve 100 is in the open state, the second annular arc surface 33a of the plug 33 is separated from the second annular arc surface 33a, forming a gap between the two for fluid to pass through. As the plug 33 moves further toward the end away from the first valve body 1, the gap between the first annular arc surface 2b and the second annular arc surface 33a further expands, thereby increasing the diameter of the pipe through which the fluid passes and alleviating the viscosity of the fluid.

[0050] In order to confirm the different types of oil, the spectral analysis component 4 can analyze the composition of the fluid temporarily stored in the first channel 1a after the liquid inlet port 7a starts to flow in and before the plug 33 is opened. For details, please refer to Figure 2 The first valve body 1 defines a mounting hole 1b, which connects the first channel 1a to the outside world. The spectral analysis component 4 includes a transmitting module 41, a receiving module 42, and a processing module 43. The receiving module 42 is connected to the transmitting module 41 and the receiving module 42, respectively. The processing module 43 is in communication with the control module 5. The transmitting module 41 is located within the mounting hole 1b and faces the first channel 1a. The operating principle of the spectral analysis component 4 is based on the absorption or scattering characteristics of fluid molecules to light of specific wavelengths. The specific operating steps are as follows: First, the transmitting module 41 transmits light of a specific wavelength to the fluid; second, the receiving module 42 detects the fluid's absorption or scattering of this light; then, the processing module 43 analyzes the received light signal and generates a characteristic absorption spectrum of the fluid; finally, the control module 5 compares this spectral data with a preset fluid model library to determine the specific composition of the fluid. This process can quickly and accurately identify the fluid type, providing a basis for the intelligent control of the valve 100, thereby achieving adaptive adjustment for different fluids and improving the system's automation and operational efficiency.

[0051] In one embodiment, a snap-fit ​​hole 1c is provided on the periphery of the mounting hole 1b. Accordingly, the housing 44 of the spectral analysis component 4 is provided with a snap-fit ​​portion 441. For details, please refer to Figure 2 The spectrum analysis component 4 is fixed to the first valve body 1 by snap-fitting, which not only improves the reliability of the installation, but also facilitates the subsequent replacement and maintenance of the spectrum analysis component 4.

[0052] In one embodiment of the present application, the end portion of the mounting hole 1b close to the first channel 1a is covered with a light-transmitting plate 12, and the material of the light-transmitting plate 12 is a highly transmissive quartz material. Figure 2The main purpose of this design is to ensure that the spectral analysis component 4 can perform fluid composition analysis efficiently and accurately. The high-transmittance quartz material has excellent optical properties and can achieve high transmittance in a wide wavelength range, reducing the loss and scattering of light when passing through the light-transmitting plate 12, thereby improving the accuracy and reliability of spectral analysis. In addition, since the light-transmitting plate 12 is in direct contact with the fluid, the quartz material also has good chemical stability and mechanical strength, and can withstand common chemical corrosion and physical impact in industrial environments, ensuring the stability and durability of the light-transmitting plate 12 during long-term use. This not only improves the overall performance of the valve 100, but also extends the service life of the spectral analysis component 4, reduces maintenance costs, and improves the reliability and economy of the system.

[0053] In order to drive the plug 33 so that it can move along the flow direction of the fluid, the flow control assembly 3 includes a drive mechanism 32. The plug 33 is arranged at the movable end of the drive mechanism 32, so that the plug 33 can move under the drive of the drive mechanism 32. It should be noted that the drive mechanism 32 can be a cylinder or an electric telescopic rod. This application does not limit this. In one embodiment of the application, the drive mechanism 32 is an electric telescopic rod. For details, please refer to Figure 5 The electric telescopic rod provides precise linear motion, ensuring that the plug 33 moves precisely along the fluid flow direction, thereby achieving accurate flow control. Secondly, the electric telescopic rod's fast response speed allows for rapid adjustment of the plug 33's position to accommodate rapid changes in fluid flow. The electric telescopic rod's simple structure, easy maintenance, and long service life make it suitable for a variety of harsh working environments.

[0054] In an embodiment of the present application, a spring 34 is further provided on the periphery of the electric telescopic rod, and the two ends of the spring 34 are respectively in contact with the fixing seat 31 and the plug 33, which can provide additional buffering and reset effects, further improving the stability and reliability of the system.

[0055] Furthermore, the outer periphery of the electric telescopic rod is covered with a sealing rubber sleeve 35, with its ends connected to the plug 33 and the fixing seat 31, respectively. The electric telescopic rod and the sealing rubber sleeve 35 are both located within the space enclosed by the sealing rubber sleeve 35, the plug 33, and the sealing seat. The sealing rubber sleeve 35 prevents the spring 34 and the electric telescopic rod from being immersed in oil, protecting the electric telescopic rod and the spring 34 from oil corrosion, thereby extending their service life. Furthermore, the sealing rubber sleeve 35 prevents oil from entering the sealed space, which would increase the movement resistance of the electric telescopic rod, thereby improving the safety and reliability of the system. Furthermore, the sealing rubber sleeve 35 prevents impurities from entering, keeps internal components clean, and ensures smooth operation of moving parts, thereby improving the overall performance and stability of the system. The sealing rubber sleeve 35 can be made of materials such as nitrile rubber or fluororubber, which have excellent wear resistance and aging resistance and are suitable for sealing petroleum-based liquids.

[0056] In the above embodiment, the mounting base of the electric telescopic rod is the fixing base 31, which is disc-shaped as a whole, and the outer peripheral wall is connected to the inner peripheral wall of the second valve body 2. For details, please refer to Figure 3 and Figure 6 The present application does not restrict the connection method between the fixing seat 31 and the second valve body 2; either a detachable or non-detachable connection may be employed. In this embodiment, the fixing seat 31 is detachably connected to facilitate maintenance of the electric telescopic rod. The fixing seat 31 is provided with a plurality of flow holes 311, which are arranged around the electric telescopic rod. The specific shape of the flow holes 311 is not limited herein and may be circular, square, or irregular. The total flow rate per unit time of the plurality of flow holes 311 should not be less than the maximum flow rate of the valve body.

[0057] It should be noted that the first valve body 1 and the second valve body 2 can be connected by a snap-fit ​​method or a screw-fit method, and this application does not impose any restrictions on this. In one embodiment of the present application, the first valve body 1 is provided with an internal thread 11, and correspondingly, the second valve body 2 is provided with an external thread 21, and part of the structure of the second valve body 2 is located in the first channel 1a of the first valve body 1 to form an overlapping area. The screw connection can provide reliable sealing performance. Through the tight fit of the threads, fluid leakage can be effectively prevented, ensuring the sealing reliability of the valve 100 under high pressure or high flow conditions. Secondly, the design of the overlapping area enhances the structural strength, allowing the valve body to remain stable when subjected to higher pressures, reducing deformation or damage caused by pressure. This design not only improves the overall performance and service life of the valve 100, but also ensures its stable operation under various complex working conditions.

[0058] Furthermore, a sealing ring 23 is provided at the abutting position of the first valve body 1 and the second valve body 2. For details, please refer to Figure 1The sealing ring 23 is arranged at the end of the second valve body 2 facing the first valve body 1. The end is provided with a mounting groove, and the sealing ring 23 is accommodated in the mounting groove, which can significantly enhance the sealing performance of the valve 100. This design can effectively prevent fluid leakage at the valve body connection and ensure the sealing reliability of the valve 100 under high pressure or high flow conditions. At the same time, the use of the sealing ring 23 can also reduce the loose connection caused by mechanical vibration or thermal expansion, further improving the stability and durability of the valve body connection. In addition, the elastic properties of the sealing ring 23 can compensate for minor unevenness between the valve bodies, ensuring the uniformity and consistency of the sealing effect, thereby extending the service life of the valve 100 and improving its overall performance.

[0059] In one embodiment of the present application, the valve 100 has an explosion relief function. For details, please refer to Figure 3 A pressure sensor 331 is provided on the side of the plug 33 facing the first valve body 1, and the pressure sensor 331 is electrically connected to the control module 5; the first valve body 1 is provided with an explosion-proof port 1d, and the explosion-proof port 1d is provided with an explosion-proof plate 1e. When the pressure sensor 331 detects that the current fluid pressure is greater than or equal to the preset pressure threshold, it will alarm the control module 5, so that the control module 5 controls the driving mechanism 32 to expand and drive the plug 33 to move toward the side of the first valve body 1, so that the second annular arc surface 33a of the plug 33 abuts against the first annular arc surface 2b of the first pipe section 2a1, preventing the over-pressure fluid from passing through the valve 100 and causing subsequent pipelines or equipment to be subjected to greater pressure and damaged. Fluid accumulates in the first channel 1a of the first valve body 1, causing the pressure in the first channel 1a to further increase. To achieve pressure relief, the sidewall of the first valve body 1 is provided with an explosion-proof vent 1d, which is covered with an explosion-proof plate 1e. The explosion-proof plate 1e adopts a thinned design, making its structural strength far lower than that of the first valve body 1. When the fluid pressure reaches a critical value, the internal pressure of the explosion-proof plate 1e will deform and rupture, thereby connecting the first channel 1a of the first valve body 1 to the outside world, thereby achieving pressure relief of the internal high-pressure fluid. Excessive pressure can cause equipment rupture, leakage, or even explosion, posing a serious threat to operators and the surrounding environment. The pressure relief function can effectively reduce this risk and ensure the safety of the operation process.

[0060] In the technical solution of the present application, the second valve body 2 requires an external power supply to provide the power required for the operation of the driving mechanism 32, the pressure sensor 331 and the control module 5. The spectral analysis component is powered by a disposable battery or an external power supply. The bottom of the second valve body 2 is provided with a power supply interface 22. For details, please refer to Figure 3The power supply interface 22 is electrically connected to the control module 5. To further optimize product reliability, the second valve body 2 includes a built-in backup battery 6, which is connected to the power supply interface 22. The power supply interface 22 not only directly supplies energy to the various electrical components but also charges the battery 6. The backup battery 6 can provide continuous power support in the event of a main power failure or interruption, ensuring that the control module 5 and related components of the valve 100 (such as the spectral analysis component 4 and the drive mechanism 32) can continue to operate normally in an emergency. This not only helps maintain the normal operation of the system and prevent equipment from being unusable due to power outages, but also provides necessary safety measures in emergency situations. For example, in industrial automation systems, it ensures that the valve 100 can respond promptly and take appropriate measures to avoid safety accidents caused by power problems. In addition, the backup battery 6 can also support the system's remote monitoring and diagnostic functions. In the absence of external power, it can still transmit critical data to the control center, facilitating the timely identification and resolution of problems.

[0061] The first valve body 1 is provided with an inlet flange 7 at the end away from the second valve body 2, and the second valve body 2 is provided with an outlet flange 8 at the end away from the first valve body 1. The inlet flange 7 has a liquid inlet port 7a, and the outlet flange 8 has a liquid outlet port 8a. The flange connection provides reliable sealing performance. By tightening the flange gasket and bolts, it can effectively prevent fluid leakage and ensure the sealing and safety of the system. Secondly, the flange connection is easy to install and disassemble, making the connection between the water inlet pipe and the water outlet pipe more flexible and easy to maintain and replace. In addition, the flange structure has high strength and stability, can withstand greater pressure and mechanical stress, and is suitable for high-pressure and large-flow fluid transmission. At the same time, the standardized design of the flange connection makes pipes and valves produced by different manufacturers interchangeable, improving the compatibility and versatility of the system. The flexibility of the flange connection also allows for the convenient addition or removal of equipment such as filters and flow meters in the pipeline system, enhancing the scalability of the system.

[0062] The present invention also proposes a flow control method, which is applied to the valve 100 as described above, and includes the following steps: S1, the control module 5 analyzes the characteristic absorption spectrum of the fluid through the spectral analysis component 4 to obtain the component information of the fluid; S2, the control module 5 selects a fluid model in the model library that matches the component information of the fluid based on the component information of the fluid; S3, the control module 5 controls the plug 33 to move to a preset position in the fluid model.

[0063] In step S1, the control module 5 first analyzes the characteristic absorption spectrum of the fluid through the spectral analysis component 4. The spectral analysis component 4 emits light of a specific wavelength. After passing through the fluid, the light is partially absorbed to form a characteristic absorption spectrum. The receiving module 42 detects these spectra and transmits the data to the processing module 43. The processing module 43 analyzes the spectral data, extracts the characteristic information of the fluid, and thus determines the components of the fluid. This process utilizes the differences in the absorption characteristics of light by different fluid components and can quickly and accurately identify the type of fluid. The data processed by the processing module 43 in the spectral analysis component 4 is transmitted to the control module 5 via wireless transmission methods, such as Bluetooth, Wi-Fi, etc., and the control module 5 further analyzes the data.

[0064] In step S2, the control module 5 searches a built-in model library for a matching fluid model based on the fluid composition information obtained through spectral analysis. The model library stores characteristic parameters of various fluids, including viscosity, density, and surface tension. These parameters define the fluid's flow behavior under specific conditions. By comparing the fluid's characteristic spectrum with the data in the model library, the control module 5 can accurately identify the fluid type and obtain the corresponding flow control model. This process ensures that the valve 100 can adapt to the specific characteristics of the fluid.

[0065] In step S3, the control module 5 calculates the appropriate valve 100 opening based on the preset parameters in the matched fluid model, and sends instructions to the drive mechanism 32. The drive mechanism 32 adjusts the position of the plug 33 according to the instructions so that the gap between the plug 33 and the inner wall of the second channel 2a reaches a preset value. This process adjusts the flow area of ​​the fluid by precisely controlling the movement of the plug 33, thereby achieving precise control of the flow rate. The control module 5 also monitors the data of the pressure sensor 331 and the flow sensor in real time, and dynamically adjusts the opening of the plug 33 according to the feedback information to ensure that the flow rate and pressure of the fluid meet the preset requirements. Through these three steps, the flow control method of the present invention can achieve precise flow control of different fluids, improve the degree of automation and operating efficiency of the system, and ensure the safety and reliability of the system.

[0066] It will be appreciated that in step S2, the control module 5 stores multiple fluid models based on the physical and chemical properties of different fluids, such as viscosity, density, surface tension, and characteristic absorption spectra. Each fluid model includes a set of preset parameters that define the flow behavior of the fluid under specific conditions, as well as the corresponding valve 100 opening setting. The fluid models are constructed based on extensive experimental data and theoretical analysis. First, the flow characteristics of different fluids under various conditions, such as flow rate, pressure, and temperature, are experimentally measured. Then, computational fluid dynamics (CFD) software is used to simulate the flow, combining the fluid's physical and chemical properties, such as viscosity, density, and surface tension, to generate characteristic parameters for each fluid. These parameters are stored in the control module 5 database, forming a fluid model library. When the spectral analysis component 4 detects the characteristic absorption spectrum of a fluid, the control module 5 compares this spectral data with the characteristic spectra in the fluid model library. Common algorithms used in this comparison process include support vector machines (SVMs), neural networks (NNs), or deep learning algorithms (such as convolutional neural networks (CNNs)). These algorithms can identify characteristic patterns in spectral data and match them with characteristic spectra in a model library to determine the type of fluid present.

[0067] In one embodiment of the present application, a machine learning algorithm is employed to improve the accuracy and efficiency of fluid composition identification. By automatically learning and identifying complex patterns in spectral data, it can effectively process high-dimensional data and extract key features. Specifically, neural networks, especially convolutional neural networks (CNNs) in deep learning, learn hierarchical feature representations in data through the combination of multiple layers of neurons. These algorithms utilize large amounts of labeled spectral data during the training phase, enabling rapid and accurate identification of the composition of unknown fluids in practical applications. In this way, the present invention can significantly improve the accuracy and speed of fluid composition identification, providing reliable data support for the intelligent control of valve 100.

[0068] In one embodiment of the present application, after step S3, the following steps are further performed: obtaining the current fluid pressure detected by the pressure sensor 331. If the current fluid pressure is greater than or equal to a preset pressure threshold, the control module 5 controls the plug 33 to block the second channel 2a. After adjusting the position of the plug 33, the control module 5 further obtains the current fluid pressure data collected in real time by the pressure sensor 331. The pressure sensor 331 is mounted on the side of the plug 33 facing the first valve body 1 and can accurately measure the fluid pressure. The control module 5 compares the obtained pressure value with a preset pressure threshold. If the current fluid pressure is greater than or equal to the preset pressure threshold, this indicates that the pressure in the system may be too high, posing a safety risk. At this point, the control module 5 immediately sends a command to the drive mechanism 32. In response, the drive mechanism 32 drives the plug 33 toward the first valve body 1, causing the second annular curved surface 33a of the plug 33 to tightly abut against the first annular curved surface 2b of the first pipe segment 2a1, thereby completely blocking the second channel 2a and preventing further fluid flow through the valve 100. This operation can effectively prevent equipment damage or safety accidents caused by excessive pressure, ensuring the safe operation of the system. At the same time, the control module 5 will trigger an alarm or notify the operator so that further measures can be taken in time.

[0069] The specific structure of the valve 100 refers to the above embodiments. Since the flow control method adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0070] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformation made by utilizing the contents of the present invention's description and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A valve, characterized in that: include: A first valve body (1) having a first passage (1a); a second valve body (2) connected to one end of the first valve body (1) and having a second channel (2a), wherein the second channel (2a) is communicated with the first channel (1a); A flow control assembly (3) comprising a fixed seat (31), a driving mechanism (32) and a plug (33), wherein the fixed seat (31) is provided on the second valve body (2), the driving mechanism (32) is provided on the fixed seat (31), the plug (33) is provided at a movable end of the driving mechanism (32), and the distance between the plug (33) and the inner peripheral wall of the second channel (2a) is configured to be variable when the plug (33) moves; a spectral analysis component (4), disposed on the first valve body (1), the spectral analysis component (4) being used to analyze the composition of the fluid in the first channel (1a); A control module (5) is provided on the second valve body (2), the control module (5) being electrically connected to the driving mechanism (32) and being communicatively connected to the spectral analysis component (4); The second channel (2a) comprises a first pipe section (2a1) and a second pipe section (2a2) which are connected in sequence, the first pipe section (2a1) is connected to the first channel (1a), and the first pipe section (2a1) is configured to gradually shrink from the second pipe section (2a2) to the first channel (1a); The plug (33) is configured to gradually shrink from an end close to the driving mechanism (32) to an end away from the driving mechanism (32), and the outer peripheral wall of the plug (33) can abut against or disengage from the inner peripheral wall of the first pipe section (2a1); The first valve body (1) is provided with a mounting hole (1b), and the mounting hole (1b) is connected with the first channel (1a) and the outside world; The spectrum analysis component (4) comprises a transmitting module (41), a receiving module (42) and a processing module (43); the receiving module (42) is connected to the transmitting module (41) and the receiving module (42) respectively; the processing module (43) is communicatively connected to the control module (5); the transmitting module (41) is arranged in the mounting hole (1b) and faces the first channel (1a).

2. The valve according to claim 1, wherein: The end cover of the mounting hole (1b) close to the first channel (1a) is provided with a light-transmitting plate (12), and the material of the light-transmitting plate (12) is a highly transmissive quartz material.

3. The valve according to any one of claims 1 to 2, characterized in that A pressure sensor (331) is provided on the side of the plug (33) facing the first valve body (1), and the pressure sensor (331) is electrically connected to the control module (5); The first valve body (1) is provided with an explosion-proof opening (1d), and the explosion-proof opening (1d) is provided with an explosion-relief plate (1e).

4. The valve according to any one of claims 1 to 2, characterized in that The driving mechanism (32) is an electric telescopic rod, the two ends of which are respectively connected to the fixing seat (31) and the plug (33), and the electric telescopic rod moves along the axial direction of the second channel (2a); A spring (34) is provided on the outer sleeve of the electric telescopic rod, and two ends of the spring (34) are respectively in contact with the fixing seat (31) and the plug (33).

5. The valve according to claim 4, wherein: The fixing seat (31) is provided with a plurality of flow holes (311), and the plurality of flow holes (311) are arranged around the electric telescopic rod.

6. The valve according to any one of claims 1 to 2, characterized in that Part of the structure of the second valve body (2) is located in the first channel (1a), the second valve body (2) is threadedly connected to the first valve body (1), and a sealing ring (23) is provided at the end of the second valve body (2) facing the first valve body (1), and the sealing ring (23) abuts against the first valve body (1).

7. A flow control method, applied to the valve according to any one of claims 1 to 6, characterized in that: include: The control module (5) analyzes the characteristic absorption spectrum of the fluid through the spectrum analysis component (4) to obtain component information of the fluid; The control module (5) selects a fluid model that matches the component information in a model library according to the component information of the fluid; The control module (5) controls the plug (33) to move to a preset position in the fluid model.

8. The flow control method according to claim 7, wherein: After the step of the control module (5) controlling the plug (33) to move to a preset position in the fluid model, the method further comprises: The current fluid pressure collected by the pressure sensor (331) is obtained. If the current fluid pressure is greater than or equal to a preset pressure threshold, the control module (5) controls the plug (33) to block the second channel (2a).

Images